Patent Publication Number: US-2023148789-A1

Title: Lock structure and cooking appliance

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation application of PCT International Patent Application No. PCT/CN2021/139769, filed on Dec. 20, 2021, which claims priority to and benefits of Chinese Patent Application No. 202122817849.6 filed with China National Intellectual Property Administration on Nov. 17, 2021, Chinese Patent Application No. 202111362839.6 filed with China National Intellectual Property Administration on Nov. 17, 2021, Chinese Patent Application No. 202122817846.2 filed with China National Intellectual Property Administration on Nov. 17, 2021, and Chinese Patent Application No. 202111362833.9 filed with China National Intellectual Property Administration on Nov. 17, 2021, the entire contents of which are herein incorporated by reference for all purposes. No new matter has been introduced. 
    
    
     FIELD 
     The present disclosure relates to the technical field of kitchen appliance, and in particular, to a lock structure and a cooking appliance. 
     BACKGROUND 
     After cooking is done, a user can directly open a door body assembly of a cooking appliance, and the food just cooked at this time tends to be at a higher temperature, with the possibility of scalding the user. Especially after the children cook food with the cooking appliance, accidents are more likely to occur. 
     In the related art, a key-type lock structure is used to restrain the opening and closing of the door body assembly; however, when the door body assembly is opened, there is a case where the user falsely triggers a key-type structure, and at this time, the user cannot close the key-type lock structure, resulting in the impossibility of the user to close the door body assembly. 
     SUMMARY 
     The present disclosure is intended to solve at least one of the technical problems existing in the prior art or the related art. 
     A first aspect of the present disclosure provides a lock structure. 
     A second aspect of the present disclosure provides a cooking appliance. 
     A third aspect of the present disclosure provides a lock structure. 
     A fourth aspect of the present disclosure provides a cooking appliance. 
     In the first aspect, the present disclosure provides a lock structure comprising: a fixing member; and a locking assembly. The locking assembly comprises: a bearing member capable of being detachably connected with a mounting surface; a mount connected to the bearing member; a driving member, at least a portion of the driving member being provided within the mount; a first elastic member, a first end of the first elastic member being linked to the driving member; and a locking member connected to a second end of the first elastic member, the locking member is capable of moving relative to the mount under the driving of the driving member and the first elastic member, and being locked to or separated from the fixing member. 
     The lock structure as provided herein comprises a fixing member and a locking assembly. The locking assembly and the fixing member can cooperate to play the role of locking to restrain. For example, the lock structure provided in the present disclosure is applicable to the cooking appliance and is used as a child lock for the cooking appliance. 
     The locking assembly comprises a mount, a driving member, a first elastic member, and a locking member. The mount is mounted to an external object (such as a door body assembly or a cavity body assembly of the cooking appliance); at least a portion of the driving member is provided within the mount, and a first end of the first elastic member is connected to the driving member; a second end of the first elastic member is linked to the locking member. Thus, the driving member may be applied to the locking member via the first elastic member with a pushing force such that the locking member moves relative to the mount driven by the driving member and the first elastic member, thereby causing the locking member to lock with the fixing member through the mount. 
     In the lock structure provided by the present disclosure, the first elastic member abuts the driving member and the locking member, thereby achieving a flexible connection between the locking member and the driving member. Thus, in the case where the locking assembly is at the locked position, the locking member can still move towards a side of the driving member due to the presence of the first elastic member. 
     For example, the fixing member and the locking assembly can be mounted to the cavity body assembly and the door body assembly, respectively, so that, once the user inadvertently closes the locking assembly with the door body assembly opened, the fixing member contacts the locking member when the user closes the door body assembly without switching the locking member station, thereby forcing the locking member to move toward a side of the driving member. In this way, on the one hand, the connection for restraining between the locking member and the fixing member can be ensured, and on the other hand, the connection for restraining between the locking member and the fixing member does not require user operation, which greatly improves the convenience of using the locking assembly. 
     When the door body assembly is in a closed state, the locking member is in a locking station; at this time, the locking member is connected to the fixing member for restraining and the user could not open the door body assembly. Before the door body assembly is opened, the connection for restraining between the locking member and the fixing member is released; at this time, the locking member is in an unlocking position, and the locking member is separated from the fixing member. 
     In the process of opening the door body assembly, the door body assembly can be directly driven to separate from the cavity body assembly to complete the door opening operation; at this time, the locking member is still in the unlocking station. In the process of closing the door body assembly, the work position of the locking member can be switched again after the door body assembly is directly closed, so that the locking member is connected to the fixing member for restraining. Furthermore, as soon as the user switches the locking member to the locking position when the door body assembly is opened, the first elastic member abuts the locking member and the driving member, so that the locking member and the driving member are elastically connected. In this way, the user does not need to switch the station of the locking member in advance to ensure that the locking member can still lock with the fixing member during the close of the door body assembly. 
     For example, the lock structure provided in the present disclosure is applicable to the cooking appliance. After the cooking process of the cooking appliance is finished, the temperature of the food in the cooking cavity is high, and at this time, there is a risk of scalding for the user to directly open the door body to remove the food. Therefore, in the present disclosure, through the cooperation of the above-mentioned locking assembly and the fixing member, if the user wants to open the door body assembly, it is necessary to pull the locking member while opening the door body assembly. Thus, on the one hand, the user can be prompted, and on the other hand, the children can be prevented from mistakenly opening the door body assembly, which greatly improves the safety of the cooking appliance. 
     Therefore, the lock structure provided in the present disclosure cooperates with the fixing member via the locking assembly to enhance the unlocking difficulty of the lock structure, avoid the user, especially children, from opening the door body assembly by mistake, and improve the use security of the cooking appliance to which the lock structure is applied. Furthermore, the flexible connection between the driving member and the locking member can close the door body assembly without driving the locking member and ensure that the connection between the locking member and the fixing member is restrained even if the user mistakenly switches the locking member to the locking position when the door body assembly is opened. 
     The bearing member supports the mount, and the mount is mounted on the bearing member. The lock structure can be mounted to the cooking appliance. For example, the bearing member can be detachably connected to the mounting surface of the cooking appliance, i.e., the bearing member can be detached from the cooking appliance. When the lock structure is damaged, it is possible to disassemble the lock structure from the mounting surface, so as to avoid the case where the cooking appliance cannot be switched on or off due to the lock structure damage, and improve the user convenience to the lock structure. Furthermore, when the lock structure is damaged, the lock structure can be disassembled, replaced, and maintained separately without the need to disassemble parts such as the housing of the cooking appliance, thereby reducing maintenance difficulty and saving maintenance costs. 
     In one possible design, the bearing member comprises a mounting portion provided with a first opening and a first side surface, and the first side surface is used for detachably connecting with the mounting surface; a bearing portion, wherein a first end of the bearing portion is connected with the first side surface, the bearing portion is provided with a second opening and an accommodating portion in communication, the second opening is located at the second end of the bearing portion, the mount extends into the accommodating portion via the first opening, and the locking member can move relative to the second opening and is locked to or separated from the fixing member. 
     In this design, the locking member moves relative to the second opening and locks or disengages from the fixing member, the locking member locks with the fixing member when the locking member extends outward from the second opening, and the locking member disengages from the fixing member when the locking member extends inward from the second opening. The first end of the bearing portion is connected to the mounting portion, and the second end of the bearing portion is provided with a second opening, so that a user needs to press the locking member via the first opening. Furthermore, since the first side surface of the mounting portion can be connected to a mounting surface, the mounting portion is mounted on an outside surface of the cooking appliance. The mounting portion is detachably connected to the outside surface of the cooking appliance, and the mounting portion can be detached from the outside surface of the cooking appliance on the outside of the cooking appliance when the lock structure is damaged so as not to open the door body of the cooking appliance. The removal of the lock structure from the outside of the cooking appliance enables the door body of the cooking appliance to be opened by removing the lock structure even if the lock structure is damaged, further improving the user convenience in using the lock structure. 
     In one possible design, the mounting portion extends beyond a circumferential edge of the bearing portion, and the mounting portion extending beyond the circumferential edge of the bearing portion is configured to abut against the mounting surface. 
     In this design, an end portion facing the bearing portion in the mounting portion is a first side surface, the end portion facing the mounting portion in the bearing portion is a second side surface, and the area of the first side surface is greater than the area of the second side surface, so that the mounting portion can extend beyond the circumferential edge of the bearing portion. Since the first side surface of the mounting portion is used in conjunction with the mounting surface, the portion of the mounting portion that protrudes from the circumferential edge of the bearing portion can contact the mounting surface, the mounting portion and the mounting surface have a larger contact area, improving connection stability of the lock structure and outside surface of the cooking appliance. 
     In one possible design, the mount is detachably connected to the bearing portion. 
     In this design, when one of the mounts and the bearing member is damaged, the mount can be disassembled from the bearing member so that one of the mounts and the bearing member can be serviced or replaced, further reducing the maintenance cost of the lock structure. 
     In one possible design, the bearing member further comprises a baffle connected to the bearing portion, and the baffle can slide inside the accommodating portion to push the locking member. 
     In this design, the baffle can slide in the accommodating portion, and the user can press the baffle, so that the baffle pushes the locking member; the surface to be pushed of the baffle has a larger area, and the contact area of the baffle with the user&#39;s hands is larger, which can improve the driving convenience of the user for the locking member. In addition, the baffle can shield the first opening from impurities entering the accommodating portion, and the interior of the lock structure is less likely to get stuck due to impurities, which is beneficial to improving the functional stability of the lock structure. 
     In one possible design, the locking assembly further comprises a guide structure provided on the mount, at least a portion of the driving member being movable along with the guide structure and restrained at an end of the guide structure. 
     In this design, the locking assembly further comprises a guide structure. The guide structure is provided inside the mount, and at least a portion of the driving member is slidably connected to the guide structure and is capable of restraining the end portion of the guide structure such that the locking member stays at the locking station. 
     For example, the end portion of the guide structure is provided with a restraining portion, and at least a part of the driving member can move along the guide structure; when at least a portion of the driving member moves to the end portion of the guide structure, at least a portion of the driving member abuts against the restraining portion of the guide structure end portion, thereby restraining the locking member to the locked position. 
     For example, the guide structure comprises a guide rib, and the extending direction of the guide rib coincides with the moving direction of the locking member; at least a portion of the driving member can move along the guide rib and at least a portion of the driving member can abut against the end portion of the guide rib, thereby restraining the locking member to the locked position. 
     In one possible design, the driving member comprises a pressing member penetrating through the mount and being movably connected to the mount, wherein the pressing member comprises a first inclined surface; a moving member in sliding connection with the guide structure, the moving member connects with a first end of the first elastic member, the moving member can be restrained to an end portion of the guide structure; wherein the moving member comprises a second inclined surface, and the first inclined surface can abut against the second inclined surface so as to drive the moving member to drive the locking member to switch the station. 
     In this design, the driving member comprises a pressing member and a moving member. The pressing member is movably connected to the mount and penetrates through the mount, and at least a portion of the pressing member is located throughout the outside surface of the cooking appliance; during the use of the cooking appliance, the station of the locking member can be switched by pressing the pressing member. The moving member is placed inside the mount and is slidingly connected to the guide structure. In addition, the moving member is connected to the first end of the first elastic member such that the first elastic member is located between the moving member and the locking member. Therefore, during the use of the cooking appliance, the user can press the pressing member, and the pressing member drives the moving member to operate, and the moving member drives the locking member to switch the station via the first elastic member. 
     For example, the pressing member comprises a first inclined surface and the moving member comprises a second inclined surface. When the user presses the pressing member, the first inclined surface of the pressing member comes in contact with the second inclined surface of the moving member. When the pressing member is pressed for the first time, the moving member will move along the guide structure; when the moving member moves to an end portion of the guide structure, the second inclined surface cooperates with the first inclined surface to drive the moving member to rotate, and the moving member can abut against the restraining portion, and the locking member can be restrained to the locked position. When the pressing member is pressed for a second time, the second inclined surface, in cooperation with the first inclined surface, again drives the moving member to rotate, at which time the moving member moves in an opposite direction along with the guide structure, thereby separating the moving member from the restraining portion, and the locking member is switched from the locked position to the unlocked position. 
     In some possible designs, the pressing member comprises a key column, a sidewall of the key column is provided with a third protruding portion, and the third protruding portion is used for restraining the key column. 
     In this design, the pressing member comprises a key column. The sidewall of the key column is provided with a third protruding portion, and the third protruding portion can abut against an end portion of the mount, thereby ensuring that at least a part of the mounting column is always inside the mount, thereby ensuring that the key column is connected to the mount. 
     During use, the first elastic member abuts the locking member and the moving member. In this way, by restraining the abutment of the third protruding portion against the mount, it is ensured that the key column does not disengage from the mount under the elastic force action of the first elastic member. 
     In one possible design, the moving member comprises a sliding jaw sleeve, a sidewall of the sliding jaw sleeve is provided with a first protruding portion which is slidably connected to the guide structure and can abut against the end portion of the guide structure, and the second inclined surface is provided at the first protruding portion. 
     In this design, the moving member comprises a sliding jaw sleeve. The sidewall of the sliding jaw sleeve is provided with a first protruding portion which is slidably connected to the guide structure, and the first protruding portion can abut against the end portion of the guide structure, thereby restraining the locking member to the locked position. 
     For example, the interior of the key column is hollow and at least a portion of the sliding jaw sleeve can extend into the interior of the key column. In addition, the first inclined surface is at an open end of the key column and a second inclined surface is provided at the first protruding portion. When the pressing member is pressed for the first time, the first protruding portion drives the moving member to move along the guide structure; when the moving member moves to an end portion of the guide structure, the second inclined surface cooperates with the first inclined surface to drive the moving member to rotate, and at this time, the first protruding portion can abut against the restraining portion, and the locking member can be restrained to the locked position. When the pressing member is pressed for the second time, the second inclined surface cooperates with the first inclined surface to drive the moving member to rotate again. At this time, the moving member moves in a reverse direction along the guide structure under the action of a first elastic member, so that the first protruding portion is separated from the restraining portion, and the locking member is switched from the locked position to the unlocked position. 
     In one possible design, the interior of the moving member is hollow, the sidewall of the moving member is provided with a guide groove, and the extending direction of the guide groove is consistent with the moving direction of the locking member; at least a portion of the locking member is located within the moving member, a sidewall of the locking member is provided with a second protruding portion, and the second protruding portion is slidably connected to the guide groove. 
     In this design, the interior of the moving member is hollow and at least a portion of the locking member is located inside the moving member. In addition, a sidewall of the moving member is provided with a guide groove, and an extending direction of the guide groove is consistent with the moving direction of the locking member; the second protruding portion is provided on the locking member, the second protruding portion is located in the guide groove, and the second protruding portion is slidably connected to the guide groove. In this way, during use, the locking member can move relative to the moving member under the action of the external force, thereby ensuring that even if the user inadvertently closes the locking assembly, the locking member can be retracted into the mount to ensure that the locking member and the fixing member can be connected for restraining. 
     For example, with the door body assembly opened, the first elastic member abuts the moving member and the locking member. At this time, the second protruding portion is in the middle of the guide groove or in the first end of the guide groove near the bottom of the mount to ensure that the locking member retracts inside the mount driven by the external force to ensure that the locking member can still lock with the fixing member even if the user inadvertently closes the locking assembly. 
     In addition, during the movement of the locking member, the second protruding portion moves along the guide groove, and thus plays a certain restraining and guiding role through the cooperation of the second protruding portion and the guide groove, so as to improve the running stability of the locking member. 
     In one possible design, the locking member further comprises a driving inclined surface abutting against a fixing member to drive the locking member to move relative to the mount. 
     In this design, the locking member further comprises a driving inclined surface. After the door body assembly is opened, if the user falsely triggers the locking assembly, the locking member is extended out of the mount. At this time, in the process of closing the door body assembly by the user, the closing of the door body assembly can be directly driven without pressing the pressing member again, which is more convenient for the user operation. 
     For example, in the process of closing the door body assembly by the user, the fixing member first comes into contact with the driving inclined surface of the locking member, and the driving inclined surface decomposes the force applied to the locking member by the fixing member into a transverse component force and a vertical component force, wherein the vertical component force can be used to counteract the pushing force applied to the locking member by the first elastic member, so that the locking member moves under the action of the above-mentioned vertical component force, so that the locking member returns to the inside of the mount. At this time, the user closes the door body assembly. 
     In one possible design, the locking assembly further comprises a second elastic member provided in the mount and is connected to the driving member and the mount for moving the locking member back; wherein at least a part of the first elastic member is located inside the locking member, and the second elastic member is sleeved on the locking member. 
     In this design, the locking assembly further comprises a second elastic member. The second elastic member is provided within the mount and abuts a moving member of the driving member and a cover plate of the mount. Thus, the stability of the locking member is further improved by the cooperation of the first elastic member and the second elastic member. 
     During the pressing of the pressing member, the pressing member extrudes the second elastic member before the pressing member contacts the moving member, when the second elastic member is in a compressed state; after the pressing member contacts the moving member, the pressing member extrudes both the first elastic member and the second elastic member while the first elastic member and the second elastic member are in compression. 
     For example, when the moving member is restrained to the end portion of the guide structure, both the first elastic member and the second elastic member in a compressed state apply a pushing force to the moving member, thereby enabling the moving member to be stably restrained to the end portion of the guide structure. After pressing the pressing member again, the moving member rotates and disengages from an end portion of the guide structure; at this time, the first elastic member and the second elastic member cooperate in compression to move back the moving member to the previous position. In this process, due to the cooperation of the above-mentioned first elastic member and second elastic member, the pushing force to the driving member can be greatly improved, thereby further improving the stability of the locking member. 
     In one possible design, the mount comprises a fixing bracket; a third opening provided in the fixing bracket, and the driving member penetrating through the third opening; a cover plate connected to the fixing bracket; a fourth opening provided in the cover plate, wherein the locking member can penetrate through a fourth opening. 
     In this design, the mount comprises a fixing bracket, a first opening, a cover plate, and a second opening. The fixing bracket can ensure the stable mounting of the whole locking assembly; the cover plate interfaces with the fixing bracket such that the cover plate mates with the fixing bracket to secure components such as a locking member and a first elastic member. 
     In addition, the fixing bracket is provided with a first opening, the cover plate is provided with a second opening, and the first opening is provided corresponding to the second opening. The pressing part of the locking member is provided through the first opening and is located on the surface of the cooking appliance; the locking member can be driven by the moving member and the first elastic member through the second opening and into a fixing opening of the fixing member to restrain the door body assembly. 
     In a second aspect, the present disclosure provides a cooking appliance, comprising: a cavity body assembly; a door body assembly in open-close connection with a cavity body assembly; the lock structure as in any possible design of the first aspect; wherein the fixing member is provided in one of the cavity body assembly and the door body assembly and the locking assembly is provided in the other of the cavity body assembly and the door body assembly. 
     The cooking appliance provided herein has the full benefit of the lock structure provided in any of the possible designs described above. 
     The cooking appliance provided in the present disclosure comprises a cavity body assembly, a door body assembly, and a lock structure in any of the possible designs of the first aspect described above. The cavity body assembly comprises a cooking cavity, and the cooking cavity is used for placing the food to be cooked; the door body assembly is connected to the cavity body assembly and is used to open or close the cooking cavity. For example, the door body assembly may be rotatably connected to the cavity body assembly or slidably connected to the cavity body assembly. One of the cavity body assembly and door body assembly is provided with the other locking assembly of the fixing member, the cavity body assembly, and the door body assembly, and the locking assembly cooperates with the fixing member to lock the door body assembly to the cavity body assembly. For example, the above-mentioned locking assembly is a child lock and functions as an auxiliary connection. 
     When the door body assembly is in a closed state, the locking member is in a locking station; at this time, the locking member is connected to the fixing member for restraining and the user could not open the door body assembly. Before the door body assembly is opened, the connection for restraining between the locking member and the fixing member is released; at this time, the locking member is in an unlocking position, and the locking member is separated from the fixing member. 
     In the process of opening the door body assembly, the door body assembly can be directly driven to separate from the cavity body assembly to complete the door opening operation; at this time, the locking member is still in the unlocking station. In the process of closing the door body assembly, the work position of the locking member can be switched again after the door body assembly is directly closed, so that the locking member is connected to the fixing member for restraining. 
     Furthermore, as soon as the user switches the locking member to the locking position when the door body assembly is opened, the first elastic member abuts the locking member and the driving member, so that the locking member and the driving member are elastically connected. In this way, the user does not need to switch the station of the locking member in advance to ensure that the locking member can still connect with the fixing member for restraining during the close of the door body assembly. 
     When the lock structure is damaged, it is possible to disassemble the lock structure from cavity body assembly or door body assembly, so as to avoid the case where the cooking appliance cannot be switched on or off due to lock structure damage and improve the user convenience for the lock structure. Furthermore, when the lock structure is damaged, the lock structure can be disassembled, replaced, and maintained separately without the need to disassemble parts such as the housing of the cooking appliance, thereby reducing maintenance difficulty and saving maintenance costs. 
     In one possible design, the cavity body assembly comprises a cavity body; a cover body surrounding at least a portion of the cavity body. 
     In this design, the cavity body assembly comprises a cavity body and a cover body. The cavity body is provided with a cooking cavity, and the cooking cavity is used for placing the food to be cooked; the cover body surrounds at least a portion of the cavity body, thereby providing good protection for the cavity body. In addition, there is a certain mounting cavity between the cavity body and the cover body, so that the relevant components of the cooking appliance are mounted in the mounting cavity between the cavity body and the cover body. 
     In one possible design, the door body assembly further comprises a door body; a door seal connected to the door body; a lock catch provided in the door body, or the door seal for an open-close connection with the cavity body assembly. 
     In this design, the door body assembly comprises a door body, a door seal, and a lock catch. The door body is connected with the cavity body assembly and can be used to open or close the cooking cavity; the door seal interfaces with the door body and provides a good seal when the door body closes the cooking cavity to ensure that the cooking cavity seals well during operation. In addition, the lock catch is provided with a door body or a door seal to open and close with the cavity body assembly. When the door body closes the cooking cavity, the lock catch connects to the cavity body assembly to ensure the connection between the door body assembly and the cavity body assembly. 
     For example, in the cooking appliance provided in the present disclosure, the door body assembly comprises a lock catch, and the lock catch is used for connecting with the cavity body assembly, thereby ensuring a stable connection between the door body assembly and the cavity body assembly. That is, the cooking appliance provided in the present disclosure can first ensure the connection between the door body assembly and the cavity body assembly via the lock catch, and then can use the locking assembly as the child lock, so that the locking assembly cooperates with the fixing member to further restrict the user from opening the door body assembly. 
     In one possible design, based on the locking assembly being provided in the cavity body assembly, the mounting portion in the bearing member is connected to the outside surface of the cover body which is provided with a mounting hole, and the bearing portion in the bearing member can pass through the mounting hole. 
     In this design, the mounting portion is detachably connected to the outside surface of the cover body, and the mounting portion can be detached from the outside surface of the cover body on the outside of the cover body when the lock structure fails to open the door body assembly of the cooking appliance. In such a manner that the locking structure is removed from the outside of the cooking appliance, even if the lock structure is damaged, can open the door body assembly of the cooking appliance by disassembling the lock structure to improve the user convenience to the cooking appliance. 
     In some possible designs, the fixing member is connected to the door body based on the fixing member being provided in the door body assembly. 
     In this design, the fixing member can be provided at the door body assembly. When the fixing member is provided in the door body assembly, the fixing member can be connected with the door body. At this time, the locking assembly is provided in the cavity body assembly, thereby ensuring that the locking assembly corresponds to the position of the fixing member. For example, a fastener such as a bolt can be used for connection between the fixing member and the door body, or a snap fit may be used. 
     In addition, the door body itself has good strength and hardness, and the connection between the fixing member and the door body can further ensure the secure connection of the fixing member and promote the mating stability of the locking assembly and the fixing member, so as to extend the service life of the fixing member and the whole cooking appliance. 
     In some possible designs, the fixing member is connected to the door seal based on the fixing member being provided in the door body assembly. 
     In this design, the fixing member can be provided at the door body assembly. When the fixing member is provided in the door body assembly, the fixing member can be connected with the door seal. At this time, the locking assembly is provided in the cavity body assembly, thereby ensuring that the locking assembly corresponds to the position of the fixing member. For example, a fastener such as a bolt can be used for connection between the fixing member and the door seal, or a snap fit may be used. 
     Additionally, during the use of the cooking appliance, the door seal is in direct contact with the cavity body assembly and is closer to the cavity body assembly than the door body. Thus, mounting the fixing member in the door seal reduces the size requirements for the fixing member and simplifies the construction of the fixing member as well as the entire cooking appliance. 
     In some possible designs, the fixing member and the door body are of an integrated structure based on the fixing member being provided in the door body assembly. 
     In this design, the fixing member can be provided at the door body assembly. When a fixing member is provided at the door body assembly, the fixing member and the door body can be an integrated structure. The fixing member and the door body are of an integrated structure, which on the one hand can reduce the use of connectors between the fixing member and the door body, and on the other hand can greatly improve the connection strength between the fixing member and the door body, thereby ensuring the connection stability of the fixing member and the locking member, so as to prolong the service life of the fixing member and the whole cooking appliance. 
     In some possible designs, the fixing member and the door seal are of an integrated structure based on the fixing member being provided in the door body assembly. 
     In this design, the fixing member can be provided at the door body assembly. When fixing member is provided at the door body assembly, the fixing member and the door seal can be an integrated structure. The fixing member and the door seal are of an integrated structure, which on the one hand can reduce the use of connectors between the fixing member and the door seal, and on the other hand can greatly improve the connection strength between the fixing member and the door seal, thereby ensuring the connection stability of the fixing member and the locking member, so as to prolong the service life of the fixing member and the whole cooking appliance. 
     In one possible design, the fixing member is connected to the cavity body based on the fixing member being provided in the cavity body assembly. 
     In this design, the fixing member can be provided at the cavity body assembly. When the fixing member is provided in the cavity body assembly, the fixing member can be connected with the cavity body. At this time, the locking assembly is provided in the door body assembly, thereby ensuring that the locking assembly corresponds to the position of the fixing member. For example, a fastener such as a bolt can be used for connection between the fixing member and the cavity body, or a snap fit may be used. 
     In addition, the cavity body assembly itself has good strength and hardness, and the connection between the fixing member and the cavity body can further ensure the secure connection of the fixing member and promote the mating stability of the locking assembly and the fixing member, so as to extend the service life of the fixing member and the whole cooking appliance. 
     In one possible design, the fixing member is connected to the cover body based on the fixing member being provided in the cavity body assembly. 
     In this design, the fixing member can be provided at the cavity body assembly. When the fixing member is provided in the cavity body assembly, the fixing member can be connected with the cover body. At this time, the locking assembly is provided in the door body assembly, thereby ensuring that the locking assembly corresponds to the position of the fixing member. For example, a fastener such as a bolt can be used for connection between the fixing member and the cover body, or a snap fit may be used. 
     In addition, the structure of the cover body is relatively simple, and the connection of the fixing member with the cover body can reduce the mounting difficulty of the fixing member, thus improving the assembly efficiency of the locking assembly and the cooking appliance. 
     Furthermore, the connection between the fixing member and the cover body can reduce the structural and manufacturing requirements of the cavity body and further improve the manufacturing efficiency of the cavity body. 
     In one possible design, based on the locking assembly being provided in the door body assembly, the mounting portion in the bearing member is connected to the outside surface of the door body which is provided with a mounting hole, and the bearing portion in the bearing member can pass through the mounting hole. 
     In this design, the mounting portion is detachably connected to the outside surface of the door body, and the mounting portion can be detached from the outside surface of the door body on the outside of the door body when the lock structure fails to open the door body assembly of the cooking appliance. The way to disassemble the lock structure outside the cooking appliance, even if the lock structure is damaged, can open the door body assembly of the cooking appliance by disassembling the lock structure to improve the user convenience of the cooking appliance. 
     In one possible design, the cooking appliance comprises a wave oven, an oven, a steaming box, or a steaming and roasting integrated machine. 
     In a third aspect, the present disclosure provides a lock structure comprising: a fixing member; and a locking assembly comprising: a mount; a rotating member, at least a part of the rotating member is provided in the mount, and the rotating member can rotate in the mount; a first elastic member, a second end of the first elastic member linked to the mount; the locking member is connected to the first end of the first elastic member, the first end of the locking member abuts against the rotating member, when the rotating member rotates to the first position, the first elastic member is in an elastic deformation state, the second end of the locking member is locked with the fixing member, and when the rotating member rotates to the second position, the first elastic member is in an original state, and the second end of the locking member is separated from the fixing member; and a driving member provided in the mount used for driving the rotating member to move from the second position to the first position. 
     The lock structure as provided herein comprises a fixing member and a locking assembly. Among them, the locking assembly and the fixing member can cooperate to play the role of locking to restrain. For example, the lock structure provided in the present disclosure is applicable to the cooking appliance and is used as a child lock for the cooking appliance. 
     The locking assembly comprises a mount, a rotating member, a first elastic member, and a locking member. The mount is mounted to an external object (such as a door body assembly or a cavity body assembly of the cooking appliance); at least a portion of the rotating member is provided within the mount, and a second end of the first elastic member is connected to the locking member; a second end of the first elastic member is linked to the mount. Thus, the rotating member can be applied to the locking member with a pushing force, at this time, the first elastic member is elastically deformed, and when the rotating member stops pushing the locking member, the first elastic member moves the locking member back. So that the locking member moves relative to the mount driven by the rotating member and the first elastic member, thereby enabling the locking member to lock with the fixing member or separate from the fixing member through the mount. 
     In the lock structure provided by the present disclosure, the first elastic member abuts the mount and the locking member, thereby achieving a flexible connection between the locking member and the mount. Thus, in the case where the locking assembly is at the locked position, the locking member can still move towards a side of the rotating member due to the presence of the first elastic member. 
     For example, the fixing member and the locking assembly can be mounted to the cavity body assembly and the door body assembly, respectively, so that, once the user inadvertently closes the locking assembly with the door body assembly opened, the fixing member contacts the locking member when the user closes the door body assembly without switching the locking member station, thereby forcing the locking member to move toward the rotating member side. In this way, on the one hand, the connection for restraining between the locking member and the fixing member can be ensured, and on the other hand, the connection for restraining between the locking member and the fixing member does not require user operation, which greatly improves the convenience of using the locking assembly. 
     When the door body assembly is in a closed state, the locking member is in a locking station; at this time, the locking member is connected to the fixing member for restraining and the user could not open the door body assembly. The connection for restraining between the locking member and the fixing member is removed before opening the door body assembly; at this time, the locking member is at the unlocking station, and the locking member is separated from the fixing member. 
     Furthermore, as soon as the user switches the locking member to the locking position when the door body assembly is opened, the first elastic member abuts the locking member and the mount, so that the locking member and the mount are elastically connected. In this way, the user does not need to switch the station of the locking member in advance to ensure that the locking member can still lock with the fixing member during the close of the door body assembly. 
     For example, the lock structure provided in the present disclosure is applicable to the cooking appliance. After the cooking process of the cooking appliance is finished, the temperature of the food in the cooking cavity is high, and at this time, there is a risk of scalding for the user to directly open the door body to remove the food. Therefore, in the present disclosure, through the cooperation of the above-mentioned locking assembly and the fixing member, if the user wants to open the door body assembly, it is necessary to pull the locking member while opening the door body assembly. Thus, on the one hand, the user can be prompted, and on the other hand, the children can be prevented from mistakenly opening the door body assembly, which greatly improves the safety of the cooking appliance. 
     Therefore, the lock structure provided in the present disclosure cooperates with the fixing member via the locking assembly to enhance the unlocking difficulty of the lock structure, avoid the user, especially children, from opening the door body assembly by mistake, and improve the use security of the cooking appliance to which the lock structure is applied. Furthermore, the flexible connection between the driving member and the locking member can close the door body assembly without driving the locking member and ensure that the connection between the locking member and the fixing member is restrained even if the user mistakenly switches the locking member to the locking position when the door body assembly is opened. 
     The driving member can drive the rotating member to move from a second position to a first position, when the user stops pressing the rotating member, the driving member drives the rotating member to move to the first position, at this time, the rotating member pushes the locking member to the locked position. It can be ensured that the rotating member can automatically move to the first position by providing a driving member in the mount. 
     In one possible design, the locking member comprises a first driving inclined surface, wherein the fixing member can abut against the first driving inclined surface to drive the locking member to move relative to the mount. 
     In this design, the locking member is provided with a first driving inclined surface, which can serve as a guide surface. For example, when the door body assembly of the cooking appliance is in an open state, the locking member is in the locked position, and the user can drive the locking member to move to the unlocked position by pressing the rotating member, however, since the locking member is provided with a first driving inclined surface which can contact the fixing member when the user wants to close the door body assembly, the pushing force of the fixing member to the locking member has a component force that pushes the locking member towards the rotating member, so the locking member can move towards the rotating member, leaving the locking member out of the locked position. When the door body assembly moves to the closed position, the fixing member no longer pushes the locking member, at which time the locking member moves to the locked position with the fixing member under the elastic force action of the first elastic member. By providing the first driving inclined surface on the locking member, in the process of closing the door body assembly, the user is not required to actively switch the locking member to the unlocked position, and the locking member can automatically switch the position, simplifying the operation of the user and further improving the user convenience to the locking member. 
     In one possible design, the fixing member comprises a second driving inclined surface capable of abutting the locking member to drive the locking member to move relative to the mount. 
     In this design, the fixing member is provided with a second driving inclined surface, which can serve as a guide surface. For example, when the door body assembly of the cooking appliance is in an open state, the locking member is in the locked position, and the user can drive the locking member to move to the unlocked position by pressing the rotating member, however, since the fixing member is provided with a second driving inclined surface which can contact the locking member when the user wants to close the door body assembly, the pushing force of the fixing member to the locking member has a component force that pushes the locking member towards the rotating member, so the locking member can move towards the rotating member, leaving the locking member out of the locked position. When the door body assembly moves to the closed position, the fixing member no longer pushes the locking member, at which time the locking member moves to the locked position with the fixing member under the elastic force action of the first elastic member. By providing a second driving inclined surface on the fixing member, in the process of closing the door body assembly, the user is not required to actively switch the locking member to the unlocked position, and the locking member can automatically switch the position, simplifying the operation of the user and further improving the user convenience to the locking member. 
     In one possible design, the driving member comprises a second elastic member, wherein the first end of the second elastic member abuts the rotating member, the second end of the second elastic member is connected to the mount, when the rotating member is located in the first position, the second elastic member is in an original state, and when the rotating member is located in the second position, the second elastic member is in an elastically deformed state. 
     In this design, the driving member is defined as a second elastic member. The second elastic member is provided within the mount and abuts the rotating member and the mount. Thus, the stability of the locking member is further improved by the cooperation of the first elastic member and the second elastic member. 
     Before the user press the rotating member, the second elastic member pushes the rotating member to the first position, when the second elastic member is in an original state and the first elastic member is in a compressed state; when the user presses the same to rotate, the second elastic member is in a compressed state and the first elastic member is in an original state. 
     When the user stops pressing the same to rotate, the second elastic member automatically pushes the rotating member to the position where the locking member is pushed, ensuring that the locking member is stable in the lock position. 
     In other designs, the driving member may also be an electrically driven structure, such as by a motor or a cylinder to drive the rotating member to rotate. 
     In one possible design, an elastic coefficient of the second elastic member is greater than the elastic coefficient of the first elastic member. 
     In this design, since the elastic coefficient of the second elastic member is greater than the elastic coefficient of the first elastic member, the elastic force of the second elastic member is greater than the elastic force of the first elastic member when the shape variables of the first elastic member and the second elastic member are the same or similar. When the user stops pressing the rotating member, ensure that the second elastic member can overcome the elastic force of the first elastic member and push the rotating member to the first position. 
     In one possible design, the mount comprises a first guide groove and a second guide groove which are provided on two opposite sidewalls of the mount; the rotating member comprises a rotating plate; a first sliding portion provided at a first side of the rotating plate; a second sliding portion provided at a second side of the rotating plate, wherein the first sliding portion and the second sliding portion are capable of sliding backward in the first guide groove and the second guide groove around a rotating center of the rotating plate. 
     In this design, the first guide groove and the second guide groove are placed on opposite sidewalls in the mount, respectively, the first sliding portion is placed on a first side of the rotating plate, and the first sliding portion extends into and slides within the first guide groove. The second sliding portion is located in a second side of the rotating plate and the second sliding portion extends into and slides within the second guide groove. When the first side of the rotating plate is pressed, the second side of the rotating plate tilts up, and the locking member moves to the unlocked position under an elastic force of the first elastic member. When the user stops pressing the rotating plate, the second elastic member pushes the rotating plate to rotate to move back, and the rotating plate pushes the locking member to move to the lock position. 
     The first guide groove guides the first sliding portion and the second guide groove guides the second sliding portion so that the rotating plate can rotate in a fixed direction to improve the stability of the rotating plate when rotating. 
     In one possible design, the locking assembly further comprises a pressing portion capable of sliding within the mount and abutting against the rotating member which is in a first position when the pressing portion is in the original position and the rotating member is in a second position when the pressing portion is in the pressed position. 
     In this design, the pressing portion can slide in an accommodating portion, and the user can press the pressing portion, so that the pressing portion pushes the rotating member; the surface to be pushed of the pressing portion has a larger area, and the contact area of the pressing portion with the user&#39;s hands is larger, which can improve the driving convenience of the user for the locking member. Furthermore, the pressing portion can shield an opening of the mount so as to prevent impurities from entering the mount, and the interior of the lock structure is less likely to get stuck due to impurities, which is beneficial to improving the functional stability of the lock structure. 
     In one possible design, the pressing portion comprises a press plate in sliding connection with the mount; a pushing portion provided in a press plate, the pushing portion abuts against the rotating member, and the pushing portion and the locking member are located on both sides of the rotating center of the rotating member. 
     In this design, the press plate is slidingly connected to the mount, ensuring that the press plate can slide stably in a preset direction, so that the pushing portion can push the rotating member stably. The pushing portion and the locking member are located on both sides of the rotating member rotating center, when the user presses the press plate, the pushing portion abuts one side of the rotating center of the rotating member, at this time, the pushing portion pushes the rotating member. When the user stops pressing the press plate, the other side of the rotating center of the rotating member pushes the locking member to move to the lock position. By arranging the pushing portion and the locking member on both sides of the rotating center of the rotating member, the driving convenience for the rotating member can be effectively improved. 
     In one possible design, the mount can be detachably connected to the mounting surface. 
     In this design, the mount can be detachably connected to the mounting surface of the cooking appliance, i.e., the mount can be detached from the cooking appliance. When the lock structure is damaged, it is possible to disassemble the lock structure from the mounting surface, so as to avoid the case where the cooking appliance cannot be switched on or off due to the lock structure damage, and improve the user convenience to the lock structure. Furthermore, when the lock structure is damaged, the lock structure can be disassembled, replaced, and maintained separately without the need to disassemble parts such as the housing of the cooking appliance, thereby reducing maintenance difficulty and saving maintenance costs. 
     In one possible design, the mount comprises a mounting portion provided with a first opening and a first side surface, and the first side surface is used for detachably connecting with the mounting surface; a bearing portion, wherein a first end of the bearing portion is connected with the first side surface, the bearing portion is provided with a second opening and an accommodating portion in communication, the second opening is located at the second end of the bearing portion, the locking member extends into the accommodating portion via the first opening, and the locking member can move relative to the second opening and is locked to or separated from the fixing member. 
     In this design, the locking member moves relative to the second opening and locks or disengages from the fixing member, the locking member locks with the fixing member when the locking member extends outward from the second opening, and the locking member disengages from the fixing member when the locking member extends inward from the second opening. The first end of the bearing portion is connected to the mounting portion, and the second end of the bearing portion is provided with a second opening, so that a user needs to press the locking member via the first opening. Furthermore, since the first side surface of the mounting portion can be connected to a mounting surface, the mounting portion is mounted on an outside surface of the cooking appliance. The mounting portion is detachably connected to the outside surface of the cooking appliance, and the mounting portion can be detached from the outside surface of the cooking appliance on the outside of the cooking appliance when the lock structure is damaged so as not to open the door body of the cooking appliance. The removal of the lock structure from the outside of the cooking appliance enables the door body of the cooking appliance to be opened by removing the lock structure even if the lock structure is damaged, further improving the user convenience in using the lock structure. 
     In one possible design, the mounting portion extends beyond a circumferential edge of the bearing portion, and the mounting portion extending beyond the circumferential edge of the bearing portion is configured to abut against the mounting surface. 
     In this design, an end portion facing the bearing portion in the mounting portion is a first side surface, the end portion facing the mounting portion in the bearing portion is a second side surface, and the area of the first side surface is greater than the area of the second side surface, so that the mounting portion can extend beyond the circumferential edge of the bearing portion. Since the first side surface of the mounting portion is used in conjunction with the mounting surface, the portion of the mounting portion that protrudes from the circumferential edge of the bearing portion is capable of contacting the mounting surface, the mounting portion and the mounting surface have a larger contact area, improving connection stability of the lock structure and outside surface of the cooking appliance. 
     In a fourth aspect, the present disclosure provides a cooking appliance, comprising: a cavity body assembly; a door body assembly in open-close connection with a cavity body assembly; the lock structure as in any possible design of the third aspect; wherein the fixing member is provided in one of the cavity body assembly and the door body assembly and the locking assembly is provided in the other of the cavity body assembly and the door body assembly. 
     The cooking appliance provided herein has the full benefit of the lock structure provided in any of the possible designs described above. 
     The cooking appliance of the present disclosure comprises a cavity body assembly, a door body assembly, and a lock structure of any of the designs of the above third aspect. The cavity body assembly comprises a cooking cavity, and the cooking cavity is used for placing the food to be cooked; the door body assembly is connected to the cavity body assembly and is used to open or close the cooking cavity. For example, the door body assembly may be rotatably connected to the cavity body assembly or slidably connected to the cavity body assembly. One of the cavity body assembly and the door body assembly is provided with a fixing member, and the other of the cavity body assembly and the door body assembly is provided with a locking assembly, which cooperates with the fixing member to lock the door body assembly to the cavity body assembly. For example, the above-mentioned locking assembly is a child lock and functions as an auxiliary connection. 
     When the door body assembly is in a closed state, the locking member is in a locking station; at this time, the locking member is connected to the fixing member for restraining and the user could not open the door body assembly. The connection for restraining between the locking member and the fixing member is removed before opening the door body assembly; at this time, the locking member is at the unlocking station, and the locking member is separated from the fixing member. 
     In the process of opening the door body assembly, the door body assembly can be directly driven to separate from the cavity body assembly to complete the door opening operation; at this time, the locking member is still in the unlocking station. In the process of closing the door body assembly, the work position of the locking member can be switched again after the door body assembly is directly closed so that the locking member is connected to the fixing member for restraining. 
     Furthermore, as soon as the user switches the locking member to the locking position when the door body assembly is opened, the first elastic member abuts the locking member and the driving member, so that the locking member and the driving member are elastically connected. In this way, the user does not need to switch the station of the locking member in advance to ensure that the locking member can still connect with the fixing member for restraining during the close of the door body assembly. 
     When the lock structure is damaged, it is possible to disassemble the lock structure from cavity body assembly or door body assembly, so as to avoid the case where the cooking appliance cannot be switched on or off due to lock structure damage and improve the user convenience for the lock structure. Furthermore, when the lock structure is damaged, the lock structure can be disassembled, replaced, and maintained separately without the need to disassemble parts such as the housing of the cooking appliance, thereby reducing maintenance difficulty and saving maintenance costs. 
     In one possible design, the cavity body assembly comprises a cavity body; a cover body surrounding at least a portion of the cavity body. 
     In this design, the cavity body assembly comprises a cavity body and a cover body. The cavity body is provided with a cooking cavity, and the cooking cavity is used for placing the food to be cooked; the cover body surrounds at least a portion of the cavity body, thereby providing good protection for the cavity body. In addition, there is a certain mounting cavity between the cavity body and the cover body, so that the relevant components of the cooking appliance are mounted in the mounting cavity between the cavity body and the cover body. 
     In one possible design, the door body assembly further comprises a door body; a door seal connected to the door body; a lock catch provided in the door body, or the door seal for opening and closing connection with the cavity body assembly. 
     In this design, the door body assembly comprises a door body, a door seal, and a lock catch. The door body is connected with the cavity body assembly and can be used to open or close the cooking cavity; the door seal interfaces with the door body and provides a good seal when the door body closes the cooking cavity to ensure that the cooking cavity seals well during operation. In addition, the lock catch is provided with a door body or a door seal to open and close with the cavity body assembly. When the door body closes the cooking cavity, the lock catch connects to the cavity body assembly to ensure the connection between the door body assembly and the cavity body assembly. 
     For example, in the cooking appliance provided in the present disclosure, the door body assembly comprises a lock catch, and the lock catch is used for connecting with the cavity body assembly, thereby ensuring a stable connection between the door body assembly and the cavity body assembly. That is, the cooking appliance provided in the present disclosure can first ensure the connection between the door body assembly and the cavity body assembly via the lock catch, and then can use the locking assembly as the child lock, so that the locking assembly cooperates with the fixing member to further restrict the user from opening the door body assembly. 
     In one possible design, based on the locking assembly being provided in the cavity body assembly, the mounting portion in the mount is connected to the outside surface of the cover body which is provided with a mounting hole, and the bearing portion in the mount can pass through the mounting hole. 
     In this design, the mounting portion is detachably connected to the outside surface of the cover body, and the mounting portion can be detached from the outside surface of the cover body on the outside of the cover body when the lock structure fails to open the door body assembly of the cooking appliance. The way to disassemble the lock structure outside the cooking appliance, even if the lock structure is damaged, can open the door body assembly of the cooking appliance by disassembling the lock structure to improve the user convenience to the cooking appliance. 
     In some possible designs, the fixing member is connected to the door body based on the fixing member being provided in the door body assembly. 
     In this design, the fixing member can be provided at the door body assembly. When the fixing member is provided in the door body assembly, the fixing member can be connected with the door body. At this time, the locking assembly is provided in the cavity body assembly, thereby ensuring that the locking assembly corresponds to the position of the fixing member. For example, a fastener such as a bolt can be used for connection between the fixing member and the door body, or a snap fit may be used. 
     In addition, the door body itself has good strength and hardness, and the connection between the fixing member and the door body can further ensure the secure connection of the fixing member and promote the mating stability of the locking assembly and the fixing member, so as to extend the service life of the fixing member and the whole cooking appliance. 
     In some possible designs, the fixing member is connected to the door seal based on the fixing member being provided in the door body assembly. 
     In this design, the fixing member can be provided at the door body assembly. When the fixing member is provided in the door body assembly, the fixing member can be connected with the door seal. At this time, the locking assembly is provided in the cavity body assembly, thereby ensuring that the locking assembly corresponds to the position of the fixing member. For example, a fastener such as a bolt can be used for connection between the fixing member and the door seal, or a snap fit may be used. 
     Additionally, during the use of the cooking appliance, the door seal is in direct contact with the cavity body assembly and is closer to the cavity body assembly than the door body. Thus, mounting the fixing member in the door seal reduces the size requirements for the fixing member and simplifies the construction of the fixing member as well as the entire cooking appliance. 
     In some possible designs, the fixing member and the door body are of an integrated structure based on the fixing member being provided in the door body assembly. 
     In this design, the fixing member can be provided at the door body assembly. When a fixing member is provided at the door body assembly, the fixing member and the door body can be an integrated structure. The fixing member and the door body are of an integrated structure, which on the one hand can reduce the use of connectors between the fixing member and the door body, and on the other hand can greatly improve the connection strength between the fixing member and the door body, thereby ensuring the connection stability of the fixing member and the locking member, so as to prolong the service life of the fixing member and the whole cooking appliance. 
     In some possible designs, the fixing member and the door seal are of an integrated structure based on the fixing member being provided in the door body assembly. 
     In this design, the fixing member can be provided at the door body assembly. When fixing member is provided at the door body assembly, the fixing member and the door seal can be an integrated structure. The fixing member and the door seal are of an integrated structure, which on the one hand can reduce the use of connectors between the fixing member and the door seal, and on the other hand can greatly improve the connection strength between the fixing member and the door seal, thereby ensuring the connection stability of the fixing member and the locking member, so as to prolong the service life of the fixing member and the whole cooking appliance. 
     In one possible design, the fixing member is connected to the cavity body based on the fixing member being provided in the cavity body assembly. 
     In this design, the fixing member can be provided at the cavity body assembly. When the fixing member is provided in the cavity body assembly, the fixing member can be connected with the cavity body. At this time, the locking assembly is provided in the door body assembly, thereby ensuring that the locking assembly corresponds to the position of the fixing member. For example, a fastener such as a bolt can be used for connection between the fixing member and the cavity body, or a snap fit may be used. 
     In addition, the cavity body itself has good strength and hardness, and the connection between the fixing member and the cavity body can further ensure the secure connection of the fixing member and promote the mating stability of the locking assembly and the fixing member, so as to extend the service life of the fixing member and the whole cooking appliance. 
     In one possible design, the fixing member is connected to the cover body based on the fixing member being provided in the cavity body assembly. 
     In this design, the fixing member can be provided at the cavity body assembly. When the fixing member is provided in the cavity body assembly, the fixing member can be connected with the cover body. At this time, the locking assembly is provided in the door body assembly, thereby ensuring that the locking assembly corresponds to the position of the fixing member. For example, a fastener such as a bolt can be used for connection between the fixing member and the cover body, or a snap fit may be used. 
     In addition, the structure of the cover body is relatively simple, and the connection of the fixing member with the cover body can reduce the mounting difficulty of the fixing member, thus improving the assembly efficiency of the locking assembly and the cooking appliance. Furthermore, the connection between the fixing member and the cover body can reduce the structural and manufacturing requirements of the cavity body and further improve the manufacturing efficiency of the cavity body. 
     In one possible design, based on the locking assembly being provided in the door body assembly, the mounting portion in the mount is connected to the outside surface of the cover body which is provided with a mounting hole, and the bearing portion in the mount can pass through the mounting hole. 
     In this design, the mounting portion is detachably connected to the outside surface of the door body, and the mounting portion can be detached from the outside surface of the door body on the outside of the door body when the lock structure fails to open the door body assembly of the cooking appliance. In such a manner that the locking structure is removed from the outside of the cooking appliance, even if the lock structure is damaged, can open the door body assembly of the cooking appliance by disassembling the lock structure to improve the user convenience to the cooking appliance. 
     In one possible design, the cooking appliance comprises a wave oven, an oven, a steaming box, or a steaming and roasting integrated machine. 
     Additional aspects and advantages of the present disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of embodiments taken in conjunction with the accompanying drawings of which: 
         FIG.  1    is an exploded view of a lock structure of an embodiment of the present disclosure; 
         FIG.  2    is one of the structural view of a cooking appliance of an embodiment of the present disclosure; 
         FIG.  3    is a second structural view of a cooking appliance according to an embodiment of the present disclosure; 
         FIG.  4    is one of the exploded views of locking assembly in a lock structure of an embodiment of the present disclosure; 
         FIG.  5    is a schematic view of the structure of a mount and a pressing member in an embodiment of the present disclosure; 
         FIG.  6    is a schematic view of the mount and the pressing member shown in  FIG.  5    from another perspective; 
         FIG.  7    is a schematic view of the mount and the pressing member shown in  FIG.  5    from another perspective; 
         FIG.  8    is a schematic view of the mount and the pressing member shown in  FIG.  5    from another perspective; 
         FIG.  9    is a cross-sectional view along E-E shown in  FIG.  8   ; 
         FIG.  10    is a schematic view showing the structure of a pressing member according to an embodiment of the present disclosure; 
         FIG.  11    is a schematic view showing the structure of a moving member according to an embodiment of the present disclosure; 
         FIG.  12    is a schematic view showing a structure of a fixing bracket according to an embodiment of the present disclosure; 
         FIG.  13    is a third schematic view showing the structure of a cooking appliance according to an embodiment of the present disclosure. 
         FIG.  14    is a fourth schematic view showing the structure of a cooking appliance according to an embodiment of the present disclosure. 
         FIG.  15    shows one of the exploded views of a cooking appliance in an embodiment of the present disclosure; 
         FIG.  16    shows a second exploded view of a cooking appliance in an embodiment of the present disclosure; 
         FIG.  17    shows one of the structural schematics of a locking assembly in a lock structure in an embodiment of the present disclosure; 
         FIG.  18    shows a second schematic view of a locking assembly in a lock structure according to one embodiment of the present disclosure; 
         FIG.  19    is a fifth view showing a structure of a cooking appliance according to an embodiment of the present disclosure; 
         FIG.  20    is a sixth structural view showing a cooking appliance according to an embodiment of the present disclosure; 
         FIG.  21    shows a second exploded view of locking assembly in a lock structure of an embodiment of the present disclosure; 
         FIG.  22    shows a third schematic view of a locking assembly in a lock structure according to an embodiment of the present disclosure; 
         FIG.  23    is a fourth schematic view showing the structure of a locking assembly in a lock structure according to an embodiment of the present disclosure; 
         FIG.  24    shows a fifth structural view of a locking assembly in a lock structure according to an embodiment of the present disclosure; and 
         FIG.  25    shows a sixth structural view of a locking assembly in a lock structure according to an embodiment of the present disclosure. 
     
    
    
     The corresponding relationship between the reference signs and the component names in  FIGS.  1 - 25    is provided as follows: 
       102  cavity body assembly,  104  door body assembly,  106  fixing member,  108  locking assembly,  110  first mount,  112  first driving member,  114  first elastic member,  116  locking member,  118  guide structure,  120  pressing member,  122  moving member,  124  first inclined surface,  126  second inclined surface,  128  first protruding portion,  130  second protruding portion,  132  first driving inclined surface,  134  second elastic member,  136  fixing bracket,  138  third opening,  140  cover plate,  142  fourth opening,  144  cavity body,  146  cover body,  148  door body,  150  door seal,  152  lock catch,  166  third protruding portion,  170  guide groove,  180  bearing member,  182  first mounting portion,  184  first opening,  186  first bearing portion,  188  second opening,  190  accommodating portion,  192  baffle,  204  third driving inclined surface,  206  second mount,  208  first guide groove,  210  second guide groove,  212  second mounting portion,  214  fifth opening,  216  second bearing portion,  218  rotating member,  220  rotating plate,  222  first sliding portion,  224  second sliding portion,  226  third elastic member,  228  second driving inclined surface,  230  second driving member,  232  pressing portion,  234  press plate,  236  pushing portion. 
     DETAILED DESCRIPTION OF THE DISCLOSURE 
     In order that the above objects, features, and advantages of the present disclosure can be more clearly understood, the present disclosure will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict. 
     In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, however, the present disclosure may be practiced in other ways than those described herein, and therefore the scope of the present disclosure is not restrained by the specific embodiments disclosed below. 
     Lock structures and cooking appliances provided according to some embodiments of the present disclosure are described below with reference to  FIGS.  1 - 25   . 
     In connection with  FIGS.  1 ,  2 ,  3 , and  4   , in some embodiments of the present disclosure, a lock structure is provided. The lock structure comprises a fixing member  106  and a locking assembly  108 , wherein the locking assembly  108  comprises a bearing member  180 , a first mount  110 , a first driving member  112 , a first elastic member  114  and a locking member  116 , wherein the bearing member  180  can be detachably connected with the mounting surface; the first mount  110  is connected to the bearing member  180 ; at least a portion of the first driving member  112  is provided within the first mount  110 ; the first end of the first elastic member  114  is connected to the first driving member  112 ; the locking member  116  is connected to the second end of the first elastic member  114 , and the locking member  116  is capable of moving relative to the first mount  110  under the driving of the first driving member  112  and the first elastic member  114 , and locked to or disconnected from the fixing member  106 . 
     The lock structure provided in this embodiment comprises a fixing member  106  and a locking assembly  108 . Among other things, the locking assembly  108  and the fixing member  106  may cooperate to function as a lock to restrain. For example, the lock structure provided in the present disclosure is applicable to the cooking appliance and is used as a child lock for the cooking appliance. 
     For example, the locking assembly  108 comprises a first mount  110 , a first driving member  112 , a first elastic member  114 , and a locking member  116 . The first mount  110  is mounted to an external object such as a door body assembly  104  or a cavity body assembly  102  of the cooking appliance; at least a portion of the first driving member  112  is provided within the first mount  110 , and the first end of the first elastic member  114  is connected to the first driving member  112 ; the second end of first elastic member  114  is connected to the locking member  116 . Thus, the first driving member  112  may be applied to the locking member  116  via the first elastic member  114  with a pushing force, such that the locking member  116  is driven relative to the first mount  110  by the first driving member  112  and the first elastic member  114 , thereby causing the locking member  116  to lock with the fixing member  106  through the first mount  110 . 
     For example, in the lock structure provided by the present disclosure, the first elastic member  114  abuts the first driving member  112  and the locking member  116 , thereby enabling a flexible connection between the locking member  116  and the first driving member  112 . Thus, with the locking assembly  108  at the locked position, the locking member  116  can still move towards the first driving member  112  side due to the presence of the first elastic member  114 . 
     For example, the fixing member  106  and the locking assembly  108  may be mounted to a cavity body assembly  102  and a door body assembly  104 , respectively, such that, once the user inadvertently closes the locking assembly  108  with the door body assembly  104  opened, the fixing member  106  contacts the locking member  116  during the close of the door body assembly  104  by the user without switching the station of the locking member  116 , thereby forcing the locking member  116  to move toward a side of the first driving member  112 . In this way, on the one hand, the connection for restraining between the locking member  116  and the fixing member  106  can be ensured, and on the other hand, the connection for restraining between the locking member  116  and the fixing member  106  does not require a user operation, which greatly improves the convenience of using the locking assembly  108 . 
     When the door body assembly  104  is in a closed state, the locking member  116  is in a locking station; the locking member  116  is now connected to the fixing member  106  and the user cannot open the door body assembly  104 . Before the door body assembly  104  is opened, the connection for restraining between the locking member  116  and the fixing member  106  is released; at this time, the locking member  116  is in an unlocking position, and the locking member  116  is separated from the fixing member  106 . 
     A state where the locking assembly  108  is separated from the fixing member  106  is shown in  FIG.  2   , and a state where the locking assembly  108  is locked with the fixing member  106  is shown in  FIG.  3   . 
     In the process of opening the door body assembly  104 , the door body assembly  104  can be directly driven to separate from the cavity body assembly  102  so as to complete a door opening operation; at this time, the locking member  116  is still in the unlocking station. In the process of closing the door body assembly  104 , the work position of the locking member  116  can be switched again after the door body assembly  104  is directly closed so that the locking member  116  is connected to the fixing member  106  for restraining. Furthermore, as soon as the user switches the locking member  116  to the locking station when the door body assembly  104  is opened, the first elastic member  114  makes an elastic connection between the locking member  116  and the first driving member  112  due to the abutment between the locking member  116  and the first driving member  112 . In this way, the user does not need to switch the station of the locking member  116  in advance to ensure that the locking member  116  can still lock with the fixing member  106  during the close of the door body assembly  104 . 
     For example, the lock structure provided in the present disclosure is applicable to the cooking appliance. After the cooking process of the cooking appliance is finished, the temperature of the food in the cooking cavity is high, and at this time, there is a risk of scalding for the user to directly open the door body to remove the food. Therefore, in the present disclosure, through the cooperation of the above-mentioned locking assembly  108  and the fixing member  106 , if the user wants to open the door body assembly  104 , it is necessary to pull the locking member  116  while opening the door body assembly  104 . Thus, on the one hand, the user can be prompted, and on the other hand, the children can be prevented from mistakenly opening the door body assembly  104 , which greatly improves the safety of the cooking appliance. 
     Therefore, the lock structure provided in the present disclosure cooperates with the fixing member  106  via the locking assembly  108  to enhance the unlocking difficulty of the lock structure, avoid the user, especially children, from opening the door body assembly  104  by mistake, and improve the use security of the cooking appliance to which the lock structure is applied. Furthermore, the flexible connection between the first driving member  112  and the locking member  116  can close the door body assembly  104  without driving the locking member  116  and ensure that the connection between the locking member  116  and the fixing member  106  is restrained even if the user mistakenly switches the locking member  116  to the locking position when the door body assembly  104  is opened. 
     The bearing member  180  supports the first mount  110  which is mounted to the bearing member  180 . The lock structure can be mounted to the cooking appliance. For example, the bearing member  180  can be detachably connected to the mounting surface of the cooking appliance, i.e., the bearing member  180  can be detached from the cooking appliance. When the lock structure is damaged, it is possible to disassemble the lock structure from the mounting surface, so as to avoid the case where the cooking appliance cannot be switched on or off due to the lock structure damage, and improve the user convenience to the lock structure. Furthermore, when the lock structure is damaged, the lock structure can be disassembled, replaced, and maintained separately without the need to disassemble parts such as the housing of the cooking appliance, thereby reducing maintenance difficulty and saving maintenance costs. 
     As shown in connection with  FIGS.  1  and  14   , in one possible embodiment, the bearing member  180  comprises a first mounting portion  182  and a first bearing portion  186 , wherein the first mounting portion  182  is provided with a first opening  184 , the first mounting portion  182  is provided with a first side surface, and the first side surface is used for detachably connecting with the mounting surface; the first end of the first bearing portion  186  is connected to the first side surface, and the first bearing portion  186  is provided with a second opening  188  and an accommodating portion  190  in communication, wherein the second opening  188  is located at a second end of the first bearing portion  186 , the first mount  110  extends into the accommodating portion  190  via the first opening  184 , and the locking member  116  can move relative to the second opening  188  and is locked to or separated from the fixing member  106 . 
     In this embodiment, the locking member  116  moves relative to the second opening  188  and engages or disengages from the fixing member  106 , the locking member  116  engages the fixing member  106  when the locking member  116  extends outward from the second opening  188 , and the locking member  116  disengages from the fixing member  106  when the locking member  116  extends inward from the second opening  188 . The first end of the first bearing portion  186  is connected to the first mounting portion  182  and the second end of the first bearing portion  186  is provided with the second opening  188 , so the user needs to press the locking member  116  via the first opening  184 . Furthermore, since the first side surface of the first mounting portion  182  can be connected to a mounting surface, the first mounting portion  182  is mounted on an outside surface of the cooking appliance. The first mounting portion  182  is detachably connected to the outside surface of the cooking appliance, and the mounting portion  182  can be detached from the outside surface of the cooking appliance on the outside of the cooking appliance when the lock structure is damaged so as not to open the door body of the cooking appliance. The removal of the lock structure from the outside of the cooking appliance enables the door body of the cooking appliance to be opened by removing the lock structure even if the lock structure is damaged, further improving the user convenience in using the lock structure. 
     In one possible embodiment, as shown in conjunction with  FIGS.  1  and  14   , the first mounting portion  182  extends beyond the circumferential edge of the first bearing portion  186 , and the first mounting portion  182  extending beyond the circumferential edge of the first bearing portion  186  is configured to abut against the mounting surface. 
     In this embodiment, an end portion of the first mounting portion  182  facing the first bearing portion  186  is a first side surface, an end portion of the first bearing portion  186  facing the first mounting portion  182  is a second side surface, and the area of the first side surface is greater than the area of the second side surface so that the first mounting portion  182  can extend beyond the circumferential edge of the first bearing portion  186 . Since the first side surface of the first mounting portion  182  is used in conjunction with the mounting surface, the portion of the first mounting portion  182  that protrudes from the circumferential edge of the first bearing portion  186  is capable of contacting the mounting surface, the first mounting portion  182  and the mounting surface have a larger contact area, improving connection stability of the lock structure and outside surface of the cooking appliance. 
     In one possible embodiment, the first mount  110  is detachably connected to the first bearing portion  186 . 
     In this embodiment, when one of the first mount  110  and the bearing member  180  is damaged, the first mount  110  may be disassembled from the bearing member  180  so that one of the first mount  110  and the bearing member  180  may be serviced or replaced, further reducing the maintenance cost of the lock structure. 
     As shown in connection with  FIGS.  1  and  14   , in one possible embodiment, the bearing member  180  further comprises a baffle  192  connected to the first bearing portion  186 , and the baffle  192  can slide within the accommodating portion  190  to push the locking member  116 . 
     In this embodiment, the baffle  192  can slide in the accommodating portion  190 , and the user can press the baffle  192 , so that the baffle  192  pushes the locking member  116 ; the surface to be pushed of the baffle  192  has a larger area, and the contact area of the baffle  192  with the user&#39;s hands is larger, which can improve the driving convenience of the user for the locking member  116 . In addition, the baffle  192  can shield the first opening  184  from impurities entering the accommodating portion  190 , and the interior of the lock structure is less likely to become stuck due to impurities, which is beneficial to improving the functional stability of the lock structure. 
     In one possible embodiment, as shown in conjunction with  FIGS.  1 ,  4 , and  8   , the locking assembly  108  further comprises a guide structure  118  provided on the first mount  110 , and at least a portion of the first driving member  112  is capable of moving along the guide structure  118  and is restrained to an end portion of the guide structure  118 . 
     In this embodiment, the locking assembly  108  further comprises a guide structure  118 . The guide structure  118  is provided inside the mount  110 , and at least a portion of the first driving member  112  is slidably connected to the guide structure  118  and is capable of restraining the end portion of the guide structure  118  such that the locking member  116  stays at the locking station. 
     For example, the end portion of the guide structure  118  is provided with a restraining portion, and at least a portion of the first driving member  112  can move along the guide structure  118 ; when at least a portion of the first driving member  112  moves to the end portion of the guide structure  118 , at least a portion of the first driving member  112  abuts against the restraining portion of the end portion of the guide structure  118 , thereby restraining the locking member  116  to the locked position. 
     For example, the guide structure  118  comprises a guide rib, and the extending direction of the guide rib coincides with the moving direction of the locking member  116 ; at least a portion of the first driving member  112  can move along the guide rib and at least a portion of the first driving member  112  can abut against the end portion of the guide rib, thereby restraining the locking member  116  to the locked position. 
     As shown in connection with  FIGS.  4 ,  5 ,  6 ,  7 ,  8 , and  9   , in one possible embodiment, the first driving member  112  comprises a pressing member  120  and a moving member  122 , wherein the pressing member  120  penetrates through the first mount  110  and is movably connected to the first mount  110 , and the pressing member  120  comprises a first inclined surface  124 ; the moving member  122  is slidingly connected to the guide structure  118 , the moving member  122  is connected to the first end of the first elastic member  114 , and the moving member  122  can be restrained to the end portion of the guide structure  118 ; wherein the moving member  122  comprises a second inclined surface  126 , and the first inclined surface  124  can abut against the second inclined surface  126  so as to drive the moving member  122  to drive the locking member  116  to switch the station. 
     In this embodiment, the first driving member  112  comprises a pressing member  120  and a moving member  122 . The pressing member  120  is movably connected to the first mount  110  and penetrates through the first mount  110 ; and at least a portion of the pressing member  120  is located throughout the outside surface of the cooking appliance; during the use of the cooking appliance, the station of the locking member  116  can be switched by pressing the pressing member  120 .A moving member  122  is provided inside the first mount  110  and is slidably connected to the guide structure  118 . In addition, the moving member  122  is connected to the first end of the first elastic member  114  such that the first elastic member  114  is located between the moving member  122  and the locking member  116 . Therefore, during the use of the cooking appliance, the user can press the pressing member  120 , and the pressing member  120  drives the moving member  122  to operate, and the moving member  122  drives the locking member  116  to switch the station via the first elastic member  114 . 
     For example, the pressing member  120  comprises a first inclined surface  124  and the moving member  122  comprises a second inclined surface  126 , as shown in conjunction with  FIGS.  10  and  11   . When the user presses the pressing member  120 , the first inclined surface  124  of the pressing member  120  contacts the second inclined surface  126  of the moving member  122 . When the pressing member  120  is pressed for the first time, the moving member  122  moves along with the guide structure  118 ; when the moving member  122  moves to the end portion of the guide structure  118 , the second inclined surface  126  cooperates with the first inclined surface  124  to drive the moving member  122  to rotate, so that the moving member  122  can abut against the restraining portion, and the locking member  116  is restrained to the locked position. When the pressing member  120  is pressed a second time, the second inclined surface  126  cooperates with the first inclined surface  124  to drive the moving member  122  again to rotate, at which time the moving member  122  moves in a reverse direction along with the guide structure  118 , thereby causing the moving member  122  to separate from the restraining portion, and the locking member  116  is switched from the locked position to the unlocked position. 
     In some possible embodiments, the pressing member  120  comprises a key column, a sidewall of the key column is provided with a third protruding portion  166 , and the third protruding portion  166  is used for restraining the key column. 
     In this embodiment, the pressing member  120  comprises a key column. The sidewall of the key column is provided with a third protruding portion  166 , and the third protruding portion  166  can abut against an end portion of the mount  110 , thereby ensuring that at least a part of the mounting column is always inside the mount  110 , thereby ensuring that the key column is connected to the mount  110 . 
     For example, during use, the first elastic member  114  abuts the locking member  116  and the moving member  122 . Thus, by restraining the abutment of the third protruding portion  166  against the first mount  110 , it is ensured that the key column does not disengage the first mount  110  under the elastic force action of the first elastic member  114 . 
     In one possible embodiment, as shown in connection with  FIGS.  9 ,  10 , and  11   , the moving member  122  comprises a sliding jaw sleeve, the sidewall of the sliding jaw sleeve is provided with a first protruding portion  128  which is slidably connected to the guide structure  118  and can abut against the end portion of the guide structure  118 , and the second inclined surface  126  is provided at the first protruding portion  128 . 
     In this embodiment, the moving member  122  comprises a sliding jaw sleeve. The sidewall of the sliding jaw sleeve is provided with a first protruding portion  128  which is slidably connected to the guide structure  118 , and the first protruding portion  128  can abut against the end portion of the guide structure  118 , thereby restraining the locking member  116  to the locked position. 
     For example, the interior of the key column is hollow and at least a portion of the sliding jaw sleeve can extend into the interior of the key column. In addition, the first inclined surface  124  is at an open end of the key column and a second inclined surface  126  is provided at the first protruding portion  128 . When the pressing member  120  is pressed for the first time, the first protruding portion  128  drives the moving member  122  to move along the guide structure  118 ; when the moving member  122  moves to the end portion of the guide structure  118 , the second inclined surface  126  cooperates with the first inclined surface  124  to drive the moving member  122  to rotate, at which time the first protruding portion  128  abuts against the restraining portion and the locking member  116  is retained at the locked position. When the pressing member  120  is pressed a second time, the second inclined surface  126  cooperates with the first inclined surface  124  to again drive the moving member  122  to rotate, at which time the moving member  122  moves in the opposite direction along with the guide structure  118  under the action of the first elastic member  114 , thereby separating the first protruding portion  128  from the restraining portion, and the locking member  116  is switched from the locked position to the unlocked position. 
     In connection with  FIGS.  9 ,  10 , and  11   , in one possible embodiment, the interior of the moving member  122  is hollow, the sidewall of the moving member  122  is provided with a guide groove  170 , and the extending direction of the guide groove  170  coincides with the moving direction of the locking member  116 ; at least a portion of the locking member  116  is located within the moving member  122 , and the sidewall of the locking member  116  is provided with a second protruding portion  130  that is slidably connected to the guide groove  170 . 
     In this embodiment, the interior of the moving member  122  is hollow and at least a portion of the locking member  116  is located inside the moving member  122 . In addition, the sidewall of the moving member  122  is provided with the guide groove  170 , and the extending direction of the guide groove  170  is consistent with the moving direction of the locking member  116 ; the locking member  116  is provided with a second protruding portion  130 , which is located inside the guide groove  170 , so that the second protruding portion  130  is slidably connected with the guide groove  170 . In this way, during use, the locking member  116  can move relative to the moving member  122  under the action of the external force, thereby ensuring that even if the user inadvertently closes the locking assembly  108 , the locking member  116  can be retracted into the first mount  110  to ensure that the locking member  116  and the fixing member  106  can be connected for restraining. 
     For example, with the door body assembly  104  opened, the first elastic member  114  abuts the moving member  122  and the locking member  116 . At this time, the second protruding portion  130  is in the middle of the guide groove  170  or in the first end of the guide groove  170  near the bottom of the first mount  110  to ensure that the locking member  116  retracts inside the first mount  110  driven by the external force to ensure that the locking member  116  can still lock with the fixing member  106  even if the user inadvertently closes the locking assembly  108 . 
     In addition, during the movement of the locking member  116 , the second protruding portion  130  moves along the guide groove  170 , and thus plays a certain restraining and guiding role through the cooperation of the second protruding portion  130  and the guide groove  170 , so as to improve the running stability of the locking member  116 . 
     As shown in  FIG.  4   , in one possible embodiment, the locking member  116  further comprises a first driving inclined surface  132 , wherein the fixing member  106  can abut against the first driving inclined surface  132  to drive the locking member  116  relative to the first mount  110 . 
     In this embodiment, the locking member  116  further comprises a first driving inclined surface  132 . Here, after the door body assembly  104  is opened, if the user falsely triggers the locking assembly  108 , the locking member  116  is extended out of the first mount  110 . At this time, in the process of closing the door body assembly  104  by the user, the closing of the door body assembly  104  can be directly driven without pressing the pressing member  120  again, which is more convenient for the user operation. 
     For example, in the process of closing the door body assembly  104  by the user, the fixing member  106  first comes into contact with the first driving inclined surface  132  of the locking member  116 , and the first driving inclined surface  132  decomposes the force applied to the locking member  116  by the fixing member  106  into a transverse component force and a vertical component force, wherein the vertical component force can be used to counteract the pushing force applied to the locking member  116  by the first elastic member  114 , so that the locking member  116  moves under the action of the above-mentioned vertical component force, so that the locking member  116  returns to the inside of the first mount  110 . At this time, the user closes the door body assembly  104 . 
     As shown in connection with  FIGS.  4  and  9   , in one possible embodiment, the locking assembly  108  further comprises a second elastic member  134  and a second elastic member  134  provided in the first mount  110  and are connected to the first driving member  112  and the first mount  110  for moving the locking member  116  back; wherein at least a part of the first elastic member  114  is located inside the locking member  116 , and the second elastic member  134  is sleeved on the locking member  116 . 
     In this embodiment, the locking assembly  108  further comprises a second elastic member  134 . The second elastic member  134  is provided within the first mount  110  and abuts against the moving member  122  of the first driving member  112  and the cover plate  140  of the first mount  110 . Thus, the stability of the locking member  116  is further improved by the cooperation of the first elastic member  114  and the second elastic member  134 . 
     During the pressing of the pressing member  120 , the pressing member  120  presses the second elastic member  134  before the pressing member  120  contacts the moving member  122 , when the second elastic member  134  is in a compressed state; after the pressing member  120  contacts the moving member  122 , the pressing member  120  compresses both the first elastic member  114  and the second elastic member  134  while both the first elastic member  114  and the second elastic member  134  are in compression. 
     For example, when the moving member  122  is restrained to the end portion of the guide structure  118 , both the first elastic member  114  and the second elastic member  134  in a compressed state apply a pushing force to the moving member  122 , thereby enabling the moving member  122  to be stably restrained to the end portion of the guide structure  118 . After pressing the pressing member  120  again, the moving member  122  rotates and disengages from an end portion of the guide structure  118 ; at this time, the first elastic member  114  and the second elastic member  134  cooperate in compression to move the moving member  122  back to the previous position. In this process, due to the cooperation of the above-mentioned first elastic member  114  and second elastic member  134 , the pushing force to the first driving member  112  can be greatly improved, thereby further improving the stability of the locking member  116 . 
     In one possible embodiment, as shown in conjunction with  FIGS.  4 ,  9 , and  12   , the first mount  110  comprises a fixing bracket  136 , a third opening  138 , a cover plate  140 , and a fourth opening  142 , wherein the third opening  138  is provided on the fixing bracket  136 , and the first driving member  112  is provided through the third opening  138 ; the cover plate  140  is connected to the fixing bracket  136 ; the fourth opening  142  is provided on the cover plate  140 , and the locking member  116  can be provided through the fourth opening  142 . 
     In this embodiment, the first mount  110  comprises a fixing bracket  136 , a first opening  184 , a cover plate  140 , and a second opening  188 . The fixing bracket  136  can ensure the stable mounting of the whole locking assembly  108 ; the cover plate  140  is connected to the fixing bracket  136  such that the cover plate  140  cooperates with the fixing bracket  136  to secure components such as a locking member  116  and a first elastic member  114 . 
     In addition, the fixing bracket  136  is provided with a first opening  184 , the cover plate  140  is provided with a second opening  188 , and the first opening  184  is provided corresponding to the second opening  188 .The pressing part of the locking member  116  is provided through the first opening  184  and is located on the surface of the cooking appliance; the locking member  116  can be driven by the moving member  122  and the first elastic member  114  through the second opening  188  and into a fixing opening of the fixing member  106  to restrain the door body assembly  104 . 
     An inner wall of the fixing bracket  136  is provided with a restraining slot along the circumferential direction; when the moving member  122  moves to the end portion of the guide structure  118 , under the cooperation action of the first inclined surface  124  and the second inclined surface  126 , the structure provided with the second inclined surface  126  on the moving member is pushed into a restraining slot which restrains the structure provided with the second inclined surface  126 , the moving member  122  does no longer move, and the locking member  116  is restrained to the locked position. When the pressing member  120  is pressed a second time, the second inclined surface  126 , in cooperation with the first inclined surface  124 , again drives the moving member  122  to rotate, and the structure provided with the second inclined surface  126  is pushed out of the restraining slot thereby separating the moving member  122  from the restraining portion, and the locking member  116  is switching from the locked position to the unlocked position. 
     With reference to  FIGS.  1 ,  13 ,  14 ,  15 , and  16   , in a second aspect, the present disclosure provides a cooking appliance. The cooking appliance comprises a cavity body assembly  102 , a door body assembly  104 , and the lock structure as in any of the above-mentioned embodiments, wherein the door body assembly  104  is in an open-close connection with the cavity body assembly  102 ; among these, the fixing member  106  is provided in one of the cavity body assembly  102  and the door body assembly  104 , and the locking assembly  108  is provided in the other of the cavity body assembly  102  and the door body assembly  104 . 
     The cooking appliance provided in this example has the full benefit of the lock structure provided in any of the above examples. 
     The cooking appliance provided in this embodiment comprises a cavity body assembly  102 , a door body assembly  104 , and a lock structure in any of the embodiments described above. The cavity body ‘ 102  assembly comprises a cooking cavity, and the cooking cavity is used for placing the food to be cooked; the door body assembly  104  is connected to the cavity body assembly  102  and is used to open or close the cooking cavity. For example, the door body assembly  104  may be rotatably connected to the cavity body assembly  102  or slidably connected to the cavity body assembly  102 .One of the cavity body assembly  102  and the door body assembly  104  is provided with a fixing member  106 , and the other of the cavity body assembly  102  and the door body assembly  104  is a locking assembly  108 , and the locking assembly  108  cooperates with the fixing member  106  to lock the door body assembly  104  on the cavity body assembly  102 . For example, the above-mentioned locking assembly  108  is a child lock and functions as an auxiliary connection. 
     When the door body assembly  104  is in a closed state, the locking member  116  is in a locking station; the locking member  116  is now connected to the fixing member  106  and the user cannot open the door body assembly  104 . Before the door body assembly  104  is opened, the connection for restraining between the locking member  116  and the fixing member  106  is released; at this time, the locking member  116  is in an unlocking position, and the locking member  116  is separated from the fixing member  106 . 
     In the process of opening the door body assembly  104 , the door body assembly  104  can be directly driven to separate from the cavity body assembly  102  so as to complete a door opening operation; at this time, the locking member  116  is still in the unlocking station. In the process of closing the door body assembly  104 , the work position of the locking member  116  can be switched again after the door body assembly  104  is directly closed, so that the locking member  116  is connected to the fixing member  106  for restraining. 
     The locking assembly  108  comprises a first mount  110 , a first driving member  112 , a first elastic member  114 , and a locking member  116 . The first mount  110  is mounted to an external object such as a door body assembly  104  or a cavity body assembly  102  of the cooking appliance; at least a portion of the first driving member  112  is provided within the first mount  110 , and the first end of the first elastic member  114  is connected to the first driving member  112 ; the second end of first elastic member  114  is connected to the locking member  116 . Thus, the first driving member  112  may be applied to the locking member  116  via the first elastic member  114  with a pushing force such that the locking member  116  is driven relative to the first mount  110  by the first driving member  112  and the first elastic member  114 , thereby causing the locking member  116  to lock with the fixing member  106  through the first mount  110 . 
     For example, in the lock structure provided by the present disclosure, the first elastic member  114  abuts the first driving member  112  and the locking member  116 , thereby enabling a flexible connection between the locking member  116  and the first driving member  112 . Thus, with the locking assembly  108  at the locked position, the locking member  116  can still move towards the first driving member  112  side due to the presence of the first elastic member  114 . 
     For example, the fixing member  106  and the locking assembly  108  may be mounted to a cavity body assembly  102  and a door body assembly  104 , respectively, such that, once the user inadvertently closes the locking assembly  108  with the door body assembly  104  opened, the fixing member  106  contacts the locking member  116  during the close of the door body assembly  104  by the user without switching the station of the locking member  116 , thereby forcing the locking member  116  to move toward a side of the first driving member  112 . In this way, on the one hand, the connection for restraining between the locking member  116  and the fixing member  106  can be ensured, and on the other hand, the connection for restraining between the locking member  116  and the fixing member  106  does not require a user operation, which greatly improves the convenience of using the locking assembly  108 . 
     When the door body assembly  104  is in a closed state, the locking member  116  is in a locking station; the locking member  116  is now connected to the fixing member  106  and the user cannot open the door body assembly  104 . Before the door body assembly  104  is opened, the connection for restraining between the locking member  116  and the fixing member  106  is released; at this time, the locking member  116  is in an unlocking position, and the locking member  116  is separated from the fixing member  106 . 
     A state where the locking assembly  108  is separated from the fixing member  106  is shown in  FIG.  2   , and a state where the locking assembly  108  is locked with the fixing member  106  is shown in  FIG.  3   . 
     In the process of opening the door body assembly  104 , the door body assembly  104  can be directly driven to separate from the cavity body assembly  102  so as to complete a door opening operation; at this time, the locking member  116  is still in the unlocking station. In the process of closing the door body assembly  104 , the work position of the locking member  116  can be switched again after the door body assembly  104  is directly closed, so that the locking member  116  is connected to the fixing member  106  for restraining. Furthermore, as soon as the user switches the locking member  116  to the locking station when the door body assembly  104  is opened, the first elastic member  114  makes an elastic connection between the locking member  116  and the first driving member  112  due to the abutment between the locking member  116  and the first driving member  112 . In this way, the user does not need to switch the station of the locking member  116  in advance to ensure that the locking member  116  can still lock with the fixing member  106  during the close of the door body assembly  104 . 
     For example, the lock structure provided in the present disclosure is applicable to the cooking appliance. After the cooking process of the cooking appliance is finished, the temperature of the food in the cooking cavity is high, and at this time, there is a risk of scalding for the user to directly open the door body to remove the food. Therefore, in the present disclosure, through the cooperation of the above-mentioned locking assembly  108  and the fixing member  106 , if the user wants to open the door body assembly  104 , it is necessary to pull the locking member  116  while opening the door body assembly  104 . Thus, on the one hand, the user can be prompted, and on the other hand, the children can be prevented from mistakenly opening the door body assembly  104 , which greatly improves the safety of the cooking appliance. 
     Therefore, the lock structure provided in the present disclosure cooperates with the fixing member  106  via the locking assembly  108  to enhance the unlocking difficulty of the lock structure, avoid the user, especially children, from opening the door body assembly  104  by mistake, and improve the use security of the cooking appliance to which the lock structure is applied. Furthermore, the flexible connection between the first driving member  112  and the locking member  116  can close the door body assembly  104  without driving the locking member  116  and ensure that the connection between the locking member  116  and the fixing member  106  is restrained even if the user mistakenly switches the locking member  116  to the locking position when the door body assembly  104  is opened. 
     The bearing member  180  supports the first mount  110  which is mounted to the bearing member  180 . The lock structure can be mounted to the cooking appliance. For example, the bearing member  180  can be detachably connected to the mounting surface of the cooking appliance, i.e., the bearing member  180  can be detached from the cooking appliance. When the lock structure is damaged, it is possible to disassemble the lock structure from the mounting surface, so as to avoid the case where the cooking appliance cannot be switched on or off due to the lock structure damage, and improve the user convenience to the lock structure. Furthermore, when the lock structure is damaged, the lock structure can be disassembled, replaced, and maintained separately without the need to disassemble parts such as the housing of the cooking appliance, thereby reducing maintenance difficulty and saving maintenance costs. 
     In one possible embodiment, the cavity body assembly  102  comprises a cavity body  144  and a cover body  146  surrounding at least a portion of the cavity body  144 . 
     In this embodiment, the cavity body assembly  102  comprises a cavity body  144  and a cover body  146 . The cavity body  144  is provided with a cooking cavity, and the cooking cavity is used for placing the food to be cooked; the cover body  146  surrounds at least a portion of the cavity body  144 , thereby providing good protection for the cavity body  144 . In addition, there is a certain mounting cavity between the cavity body  144  and the cover body  146 , so that the relevant components of the cooking appliance are mounted in the mounting cavity between the cavity body  144  and the cover body  146 . 
     In one possible embodiment, the door body assembly  104  further comprises a door body  148 , a door seal  150 , and a lock catch  152 , wherein the door seal  150  is connected to the door body  148 , a lock catch  152  is provided on the door body  148  or the door seal  150  for open-close connection with the cavity body assembly  102 . 
     In this embodiment, the door body assembly  104  comprises a door body  148 , a door seal  150 , and a lock catch  152 . The door body  148  is connected with the cavity body assembly  102  and can be used to open or close the cooking cavity; the door seal  150  interfaces with the door body  148  and provides a good seal when the door body  148  closes the cooking cavity to ensure that the cooking cavity seals well during operation. In addition, the lock catch  152  provides either the door body  148  or the door seal  150  for open-close connection with the cavity body assembly  102 . When the door body  148  closes the cooking cavity, the lock catch  152  connects to the cavity body assembly  102  to ensure the connection between the door body assembly  104  and the cavity body assembly  102 . 
     For example, in the cooking appliance provided in the present disclosure, the door body assembly  104  comprises a lock catch  152 , and the lock catch  152  is used for connecting with the cavity body assembly  102 , thereby ensuring a stable connection between the door body assembly  104  and the cavity body assembly  102 . That is, the cooking appliance provided in the present disclosure can first ensure the connection between the door body assembly  104  and the cavity body assembly  102  via the lock catch  152 , and then can use the locking assembly  108  as a child lock, so that the locking assembly  108  cooperates with the fixing member  106  to further restrict the user from opening the door body assembly  104 . 
     In one possible embodiment, based on the placement of the locking assembly  108  in the cavity body assembly  102 , the first mounting portion  182  in the bearing member  180  is connected to the outside surface of the cover body  146  on which a mounting hole is placed, and the first bearing portion  186  in the bearing member  180  penetrates through the mounting hole. 
     In this embodiment, the first mounting portion  182  is detachably connected to the outside surface of the cover body  146 , and the first mounting portion  182  can be detached from the outside surface of the cover body  146  on the outside of the cover body  146  when the lock structure fails to open the door body assembly  104  of the cooking appliance. In such a manner that the locking structure is removed from the outside of the cooking appliance, even if the lock structure is damaged, can open the door body assembly  104  of the cooking appliance by disassembling the lock structure to improve the user convenience to the cooking appliance. 
     In some possible embodiments, the fixing member  106  is connected to the door body  148  based on the fixing member  106  being provided on the door body assembly  104 . 
     In this embodiment, the fixing member  106  may be provided at the door body assembly  104 . The fixing member  106  is provided in the door body assembly  104 , it may be that the fixing member  106  is connected to the door body  148 . At this time, the locking assembly  108  is provided in the cavity body assembly  102 , thereby ensuring that the locking assembly  108  corresponds to the position of the fixing member  106 . For example, a fastener such as a bolt can be used for connection between the fixing member  106  and the door body  148 , or a snap fit may be used. 
     In addition, the door body  148  itself has good strength and hardness, and connecting the fixing member  106  with the door body  148  can further ensure the secure connection of the fixing member  106  and improve the mating stability of the locking assembly  108  and the fixing member  106 , so as to extend the service life of the fixing member  106  and the whole cooking appliance. 
     In some possible embodiments, the fixing member  106  is connected to the door seal  150  based on the fixing member  106  being provided on the door body assembly  104 . 
     In this embodiment, the fixing member  106  may be provided at the door body assembly  104 . Where the fixing member  106  is provided in the door body assembly  104 , it may be that the fixing member  106  is connected to the door seal  150 . At this time, the locking assembly  108  is provided in the cavity body assembly  102 , thereby ensuring that the locking assembly  108  corresponds to the position of the fixing member  106 . For example, a fastener such as a bolt can be used for connection between the fixing member  106  and the door seal  150 , or a snap fit may be used. 
     Additionally, during the use of the cooking appliance, the door seal  150  is in direct contact with the cavity body assembly  102  and is closer to the cavity body assembly  102  than the door body  148 . Thus, mounting the fixing member  106  in the door seal  150  reduces the size requirements for the fixing member  106  and simplifies the construction of the fixing member  106  as well as the entire cooking appliance. 
     In some possible embodiments, the fixing member  106  and the door body  148  are of an integrated structure based on the providing of the fixing member  106  to the door body assembly  104 . 
     In this embodiment, the fixing member  106  may be provided at the door body assembly  104 . When the fixing member  106  is provided in the door body assembly  104 , the fixing member  106  and the door body  148  can be an integrated structure. The fixing member  106  and the door body  148  are of an integrated structure, which on the one hand can reduce the use of connectors between the fixing member  106  and the door body  148 , and on the other hand can greatly improve the connection strength between the fixing member  106  and the door body  148 , thereby ensuring the connection stability of the fixing member  106  and the locking member  116 , so as to prolong the service life of the fixing member  106  and the whole cooking appliance. 
     In some possible embodiments, the fixing member  106  and the door seal  150  are of an integrated structure based on the fixing member  106  being placed in the door body assembly  104 . 
     In this embodiment, the fixing member  106  may be provided at the door body assembly  104 . When the fixing member  106  is provided in the door body assembly  104 , the fixing member  106  and the door seal  150  are of an integrated structure. The fixing member  106  and the door seal  150  are of an integrated structure, which on the one hand can reduce the use of connectors between the fixing member  106  and the door seal  150 , and on the other hand can greatly improve the connection strength between the fixing member  106  and the door seal  150 , thereby ensuring the connection stability of the fixing member  106  and the locking member  116 , so as to prolong the service life of the fixing member  106  and the whole cooking appliance. 
     In one possible embodiment, the fixing member  106  is connected to the cavity body  144  based on the fixing member  106  being provided on the cavity body assembly  102 . 
     In this embodiment, the fixing member  106  may be provided at the cavity body assembly  102 . The fixing member  106  is provided in the cavity body assembly  102 , it may be that the fixing member  106  is connected to the cavity body  144 . At this time, the locking assembly  108  is provided in the door body assembly  104 , thereby ensuring that the locking assembly  108  corresponds to the position of the fixing member  106 . For example, a fastener such as a bolt can be used for connection between the fixing member  106  and the cavity body  144 , or a snap fit may be used. 
     In addition, the cavity body assembly  102  itself has good strength and hardness, and connecting the fixing member  106  with the cavity body  144  can further ensure the secure connection of the fixing member  106  and improve the mating stability of the locking assembly  108  and the fixing member  106 , so as to extend the service life of the fixing member  106  and the whole cooking appliance. 
     In one possible embodiment, the fixing member  106  is connected to the cover body  146  based on the fixing member  106  being provided on the cavity body assembly  102 . 
     In this embodiment, the fixing member  106  may be provided at the cavity body assembly  102 . The fixing member  106  is provided in the cavity body assembly  102 , it may be that the fixing member  106  is connected to the cover body  146 . The locking assembly  108  is now provided in the door body assembly  104 , thereby ensuring that the locking assembly  108  corresponds to the location of the fixing member  106 . For example, a fastener such as a bolt can be used for connection between the fixing member  106  and the cover body  146 , or a snap fit may be used. 
     In addition, the structure of the cover body  146  is relatively simple, and the connection of the fixing member  106  with the cover body  146  can reduce the mounting difficulty of the fixing member  106 , thus improving the assembly efficiency of the locking assembly  108  and the cooking appliance. Furthermore, the connection between the fixing member  106  and the cover body  146  can reduce the structural and manufacturing requirements of the cavity body  144  and further improve the manufacturing efficiency of the cavity body  144 . 
     In one possible embodiment, the first mounting portion  182  in the bearing member  180  is connected to the outside surface of the door body  148  having a mounting hole provided thereon based on the locking assembly  108  provided in the door body assembly  104 , and the first bearing portion  186  in the bearing member  180  penetrates through the mounting hole. 
     In this embodiment, the first mounting portion  182  is detachably connected to the outside surface of the door body  148 , and the first mounting portion  182  can be detached from the outside surface of the door body  148  outside of the door body  148  when the lock structure is damaged so that the door body assembly  104  of the cooking appliance cannot be opened. The way to disassemble the lock structure outside the cooking appliance, even if the lock structure is damaged, can open the door body assembly  104  of the cooking appliance by disassembling the lock structure to improve the user convenience to the cooking appliance. 
     In one possible embodiment, the cooking appliance comprises a wave oven, an oven, a steaming box, or a steaming and roasting integrated machine. 
     In connection with  FIGS.  17 ,  18 ,  19  and  20   , in some embodiments of the present disclosure, a lock structure is provided. The lock structure comprises a fixing member  106  and a locking assembly  108 , wherein the locking assembly  108  comprises a second mount  206 , a rotating member  218 , a third elastic member  226 , a locking member  116  and a second driving member  230 , wherein at least a part of the rotating member  218  is provided in the second mount  206 , and the rotating member  218  can rotate in the second mount  206 ; the second end of the third elastic member  226  is connected to the second mount  206 ; the locking member  116  is connected to the first end of the third elastic member  226 , the first end of the locking member  116  abuts against the rotating member  218 , when the rotating member  218  rotates to the first position, the third elastic member  226  is in an elastic deformation state, the second end of the locking member  116  is locked with the fixing member  106 , and when the rotating member  218  rotates to the second position, the third elastic member  226  is in an original state, and the second end of the locking member  116  is separated from the fixing member  106 ; a second driving member  230  is provided in the second mount  206 , and the second driving member  230  is used to drive the rotating member  218  to move from the second position to the first position. 
     The lock structure provided in this embodiment comprises a fixing member  106  and a locking assembly  108 . Among other things, the locking assembly  108  and the fixing member  106  may cooperate to lock to restrain. For example, the lock structure provided in the present disclosure is applicable to the cooking appliance and is used as a child lock for the cooking appliance. 
     For example, the locking assembly  108  comprises a second mount  206 , a rotating member  218 , a third elastic member  226 , and a locking member  116 . The second mount  206  is mounted in an external object (such as a door body assembly  104  or a cavity body assembly  102  of the cooking appliance); at least a portion of the rotating member  218  is provided within the second mount  206 , the second end of the third elastic member  226  is connected to the locking member  116 , and the second end of the third elastic member  226  is connected to the second mount  206 . As such, the rotating member  218  can be applied to the locking member  116  with a pushing force, where the third elastic member  226  elastically deforms, and when the rotating member  218  stops pushing the locking member  116 , the third elastic member  226  causes the locking member  116  to move back. The locking member  116  is caused to move relative to the second mount  206  driven by the rotating member  218  and the third elastic member  226 , thereby causing the locking member  116  to lock with or separate from the fixing member  106  through the second mount  206 . 
     A state where the locking assembly  108  is separated from the fixing member  106  is shown in  FIG.  19   , and a state where the locking assembly  108  is locked with the fixing member  106  is shown in  FIG.  20   . 
     For example, in the lock structure provided by the present disclosure, the third elastic member  226  abuts the second mount  206  and the locking member  116 , thereby enabling a flexible connection between the locking member  116  and the second mount  206 . Thus, with the locking assembly  108  at the locked position, the locking member 116  can still move towards a side of the rotating member  218  due to the presence of the third elastic member  226 . 
     For example, the fixing member  106  and the locking assembly  108  may be mounted to a cavity body assembly  102  and a door body assembly  104 , respectively, such that, once the user inadvertently closes the locking assembly  108  with the door body assembly  104  opened, the fixing member  106  contacts the locking member  116  during the close of the door body assembly  104  by the user without switching the station of the locking member  116 , thereby forcing the locking member  116  to move toward a side of the rotating member  218 . In this way, on the one hand, the connection for restraining between the locking member  116  and the fixing member  106  can be ensured, and on the other hand, the connection for restraining between the locking member  116  and the fixing member  106  does not require a user operation, which greatly improves the convenience of using the locking assembly  108 . 
     When the door body assembly  104  is in a closed state, the locking member  116  is in a locking station; the locking member  116  is now connected to the fixing member  106  and the user cannot open the door body assembly  104 . The connection for restraining between the locking member  116  and the fixing member  106  is removed before opening the door body assembly  104 ; at this time, the locking member  116  is at the unlocking station, and the locking member  116  is separated from the fixing member  106 . 
     Once the user switches the locking member  116  to the locking station when the door body assembly  104  is opened, the locking member  116  and the second mount  206  are resiliently connected due to the third elastic member  226  abutting between the locking member  116  and the second mount  206 . In this way, the user does not need to switch the station of the locking member  116  in advance to ensure that the locking member  116  can still lock with the fixing member  106  during the close of the door body assembly  104 . 
     For example, the lock structure provided in the present disclosure is applicable to the cooking appliance. After the cooking process of the cooking appliance is finished, the temperature of the food in the cooking cavity is high, and at this time, there is a risk of scalding for the user to directly open the door body to remove the food. Therefore, in the present disclosure, through the cooperation of the above-mentioned locking assembly  108  and the fixing member  106 , if the user wants to open the door body assembly  104 , it is necessary to pull the locking member  116  while opening the door body assembly  104 . Thus, on the one hand, the user can be prompted, and on the other hand, the children can be prevented from mistakenly opening the door body assembly  104 , which greatly improves the safety of the cooking appliance. 
     Therefore, the lock structure provided in the present disclosure cooperates with the fixing member  106  via the locking assembly  108  to enhance the unlocking difficulty of the lock structure, avoid the user, especially children, from opening the door body assembly  104  by mistake, and improve the use security of the cooking appliance to which the lock structure is applied. Furthermore, the flexible connection between the second driving member  230  and the locking member  116  can close the door body assembly  104  without driving the locking member  116  and ensure that the connection between the locking member  116  and the fixing member  106  is restrained even if the user mistakenly switches the locking member  116  to the locking position when the door body assembly  104  is opened. 
     The second driving member  230  is capable of driving the rotating member  218  to move from the second position to the first position, and when the user stops pressing the rotating member  218 , the second driving member  230  drives the rotating member  218  to move to the first position, at which time the rotating member  218  pushes the locking member  116  to the locked position. By providing the second driving member  230  within the second mount  206 , it is ensured that the rotating member  218  can automatically move to the second position. 
     When the lock structure is damaged, it is possible to disassemble the lock structure from cavity body assembly  102  or door body assembly  104 , so as to avoid the case where the cooking appliance cannot be switched on or off due to lock structure damage and improve the user convenience for the lock structure. Furthermore, when the lock structure is damaged, the lock structure can be disassembled, replaced, and maintained separately without the need to disassemble parts such as the housing of the cooking appliance, thereby reducing maintenance difficulty and saving maintenance costs. 
     In one possible application, the fixing member  106  is provided with a recess into which a portion of the locking member  116  plugs when the locking member  116  is in the locked position, the locking member  116  and the recess cooperate to restrain the separation of the locking member  116  from the fixing member  106 . Alternatively, a through-hole may be provided in the fixing member  106  into which a portion of the locking member  116  plugs when the locking member  116  is in the locked position, and the locking member  116  cooperates with the through-hole to restrain the separation of the locking member  116  from the fixing member  106 . 
     As shown in connection with  FIGS.  17  and  20   , in one possible embodiment, the locking member  116  further comprises a second driving inclined surface  228 , wherein the fixing member  106  can abut against the second driving inclined surface  228  to drive the locking member  116  to move relative to the second mount  206 . 
     In this embodiment, the locking member  116  is provided with a second driving inclined surface  228 , which may serve as a guide surface. For example, when the door body assembly  104  of the cooking appliance is in an open state, the locking member  116  is in the locked position, and the user can drive the locking member  116  to move to the unlocked position by pressing the rotating member  218 , however, since the locking member  116  is provided with a second driving inclined surface  228 , the second driving inclined surface  228  can contact the fixing member  106  when the user wants to close the door body assembly  104 . The pushing force of the locking member  116  by the fixing member  106  has a component force that pushes the locking member  116  towards the rotating member  218 , so the locking member  116  can move towards the rotating member  218 , causing the locking member  116  to disengage from the locked position. When the door body assembly  104  is moved to the closed position, the fixing member  106  no longer pushes on the locking member  116 , at which time the locking member  116  is moved to a locked position with the fixing member  106  under the elastic force action of the third elastic member  226 . By providing a second driving inclined surface  228  on a locking member  116 , during the process of closing the door body assembly  104 , the user is not required to actively switch the locking member  116  to the unlocked position, and the locking member  116  can automatically switch positions, simplifying the operation of the user, and further improving the user convenience to the locking member  116 . 
     As shown in connection with  FIGS.  16  and  20   , in one possible embodiment, the fixing member  106  comprises a third driving inclined surface  204  which can abut against the locking member  116  to drive the locking member  116  relative to the second mount  206 . 
     In this embodiment, the locking member  116  is provided with a second driving inclined surface  228 , the fixing member  106  is provided with a third driving inclined surface  204 , and the second driving inclined surface  228  and the third driving inclined surface  204  may function as guide surfaces. For example, when the door body assembly  104  of the cooking appliance is in an open state, the locking member  116  is in the locked position, and the user can drive the locking member  116  to move to the unlocked position by pressing the rotating member  218 , however, since the locking member  116  is provided with a second driving inclined surface  228  and a fixing member  106  is provided with a third driving inclined surface  204 , the user wants to close the door body assembly  104 . The second driving inclined surface  228  and the third driving inclined surface  204  are in contact, and the second driving inclined surface  228  and the third driving inclined surface  204  are capable of sliding relative to each other; the locking member  116  is thus capable of moving move toward the rotating member  218 , causing the locking member  116  to disengage from the locked position. When the door body assembly  104  is moved to the closed position, the fixing member  106  no longer pushes on the locking member  116 , at which time the locking member  116  is moved to a locked position with the fixing member  106  under the elastic force action of the third elastic member  226 . By providing the second driving inclined surface  228  and the third driving inclined surface  204  on the fixing member  106 , during the process of closing the door body assembly  104 , the user is not required to actively switch the locking member  116  to the unlocked position, and the locking member  116  can automatically switch positions, simplifying the operation of the user, and further improving the user convenience to the locking member  116 . 
     In one possible embodiment, the locking member  116  comprises a second driving inclined surface  228 , wherein the fixing member  106  can abut against the second driving inclined surface  228 ; the fixing member  106  comprises a third driving inclined surface  204 , wherein the third driving inclined surface  204  can abut against the second driving inclined surface  228  of the locking member  116 . 
     In this embodiment, the fixing member  106  is provided with a third driving inclined surface  204 , which may serve as a guide surface. For example, when the door body assembly  104  of the cooking appliance is in an open state, the locking member  116  is in the locked position, and the user can drive the locking member  116  to move to the unlocked position by pressing the rotating member  218 , however, since the fixing member  106  is provided with the third driving inclined surface  204 , the third driving inclined surface  204  can come into contact with the locking member  116  when the user wants to close the door body assembly  104 , and the pushing force of the fixing member  106  against the locking member  116  has a component force pushing the locking member  116  toward the rotating member  218 , the locking member  116  can move toward the rotating member  218 , so that the locking member  116  is out of the locked position. When the door body assembly  104  is moved to the closed position, the fixing member  106  no longer pushes on the locking member  116 , at which time the locking member  116  is moved to a locked position with the fixing member  106  under the elastic force action of the third elastic member  226 . By providing a third driving inclined surface  204  on a fixing member  106 , during the process of closing the door body assembly  104 , the user is not required to actively switch the locking member  116  to the unlocked position, and the locking member  116  can automatically switch positions, simplifying the operation of the user, and further improving the user convenience to the locking member  116 . 
     In one possible embodiment, as shown in conjunction with  FIGS.  17 ,  18 , and  21   , the second driving member  230  comprises a second elastic member, wherein the first end of the second elastic member abuts against the rotating member  218 , the second end of the second elastic member is connected to the second mount  206 , when the rotating member  218  is located in the first position, the second elastic member is in an original state, and when the rotating member  218  is located in the second position, the second elastic member is in an elastically deformed state. 
     In this embodiment, the second driving member  230  is defined as the second elastic member. The second elastic member is provided within the second mount  206  and abuts the rotating member  218  and the second mount  206 . Thus, the stability of the locking member  116  is further improved by the cooperation of the third elastic member  226  and the second elastic member. 
     Before the user presses the rotating member  218 , the second elastic member pushes the rotating member  218  to the first position when the second elastic member is in an original state and the third elastic member  226  is in a compressed state; when the user presses the same to rotate, the second elastic member is in a compressed state, and the third elastic member  226  is in an original state. 
     When the user stops pressing the same to rotate, the second elastic member automatically pushes the rotating member  218  to the position where the locking member  116  is pushed, ensuring that the locking member  116  is stable in the lock position. 
     In other embodiments, the second driving member  230  may also be an electrically driven structure, which rotates through such as a motor or cylinder driven rotating member  218 . 
     In one possible application, both the third elastic member  226  and the second elastic member are compression springs. 
     In one possible embodiment, the elastic coefficient of the second elastic member is greater than the elastic coefficient of the third elastic member  226 . 
     In this embodiment, since the elastic coefficient of the second elastic member is greater than the elastic coefficient of the third elastic member  226 , the elastic force of the second elastic member is greater than the elastic force of the third elastic member  226  when the amount of deformation of the third elastic member  226  and the second elastic member is the same or similar. When the user stops pressing the rotating member  218 , it is ensured that the second elastic member can overcome the elastic force of the third elastic member  226  and push the rotating member  218  to the first position. 
     In one possible embodiment, as shown in conjunction with  FIGS.  17 ,  18 , and  21   , the second mount  206  comprises a first guide groove  208  and a second guide groove  210 , wherein the first guide groove  208  and the second guide groove  210  are provided on two sidewalls opposite the second mount  206 ; the rotating member  218  comprises a rotating plate  220 , a first sliding portion  222 , and a second sliding portion  224 ; wherein the first sliding portion  222  is provided in the first side of the rotating plate  220 , and the first sliding portion  222  can slide in the first guide groove  208 ; the second sliding portion  224  is provided in the second side of the rotating plate  220 , and the first sliding portion  222  and the second sliding portion  224  are capable of sliding backward in the first guide groove  208  and the second guide groove  210  around the rotating center of the rotating plate  220 . 
     In this embodiment, a first guide groove  208  and a second guide groove  210  are provided on opposite sidewalls in the second mount  206 , respectively, and a first sliding portion  222  is provided on the first side of the rotating plate  220 , the first sliding portion  222  extending into the first guide groove  208  and being slidable within the first guide groove  208 .The second sliding portion  224  is provided on the second side of the rotating plate  220 , and the second sliding portion  224  extends into and slides within the second guide groove  210 . When the first side of the rotating plate  220  is pressed, the second side of the rotating plate  220  tilts up, and the locking member  116  moves to the unlocked position under an elastic force of the third elastic member  226 .When the user stops pressing the rotating plate  220 , the second elastic member pushes the rotating plate  220  to rotate to move back, and the rotating plate  220  pushes the locking member  116  to move to the lock position. 
     The first guide groove  208  guides the first sliding portion  222  and the second guide groove  210  guides the second sliding portion  224  so that the rotating plate  220  can rotate in a fixed direction to improve the stability of the rotating plate  220  when rotating. 
     In one possible application, the first guide groove  208  is lower than the second guide groove  210  so that excessive flipping of the rotating member  218  is avoided. 
     In one possible embodiment, as shown in conjunction with  FIGS.  17 ,  18 , and  21   , the locking assembly  108  further comprises a pressing portion  232  which can slide within the second mount  206  and abut against the rotating member  218 , the rotating member  218  being in the first position when the pressing portion  232  is in the home position and the rotating member  218  being in the second position when the pressing portion  232  is in the depressed position. 
     In this embodiment, the pressing portion  232  can slide into the accommodating portion, and a user can press the pressing portion  232  so that the pressing portion  232  pushes the rotating member  218 , the area of the surface to be pushed of the pressing portion  232  is larger, and the contact area of the pressing portion  232  with the user&#39;s hands is larger, so that the user convenience in driving the locking member  116  can be improved. Furthermore, the pressing portion  232  can shield an opening of the mount  206 , so as to prevent impurities from entering the second mount  206 , and the interior of the lock structure is less likely to get stuck due to impurities, which is beneficial to improving the functional stability of the lock structure. 
     As shown in connection with  FIGS.  17 ,  18 ,  21 , and  25   , in one possible embodiment, the pressing portion  232  comprises a pressing plate  234  and a pushing portion  236 , wherein the pressing plate  234  is slidably connected to the second mounting  206 ; a pushing portion  236  is provided on the pressing plate  234 , the pushing portion  236  abuts against the rotating member  218 , and the pushing portion  236  and the locking member  116  are located on both sides of the rotation center of the rotating member  218 . 
     In this design, the press plate  234  is slidingly connected to the second mount  206 , ensuring that the press plate  234  can slide stably in a preset direction, so that the pushing portion  236  can push the rotating member  218  stably. The pushing portion  236  and the locking member  116  are located on both sides of the rotating center of the rotating member  218 , and when the user presses the press plate  234 , the pushing portion  236  abuts one side of the rotating center of the rotating member  218 , when the pushing portion  236  pushes the rotating member  218 . When the user stops pressing the press plate  234 , the other side of the rotating center of the rotating member  218  pushes the locking member  116  to move to the lock position. By arranging the pushing portion  236  and the locking member  116  on both sides of the rotating center of the rotating member  218 , the driving convenience for the rotating member  218  can be effectively improved. 
     In one possible embodiment, the second mount  206  can be removably connected to the mounting surface. 
     In this embodiment, the second mount  206  can be removably connected to the mounting surface of the cooking appliance, i.e., the second mount  206  can be removable from the cooking appliance. When the lock structure is damaged, it is possible to disassemble the lock structure from the mounting surface, so as to avoid the case where the cooking appliance cannot be switched on or off due to the lock structure damage, and improve the user convenience to the lock structure. Furthermore, when the lock structure is damaged, the lock structure can be disassembled, replaced, and maintained separately without the need to disassemble parts such as the housing of the cooking appliance, thereby reducing maintenance difficulty and saving maintenance costs. 
     As shown in connection with  FIGS.  17 ,  21 ,  22 ,  23 , and  24   , in one possible embodiment, the second mount  206  comprises a second mounting portion  212  and a second bearing portion  216 , wherein the second mounting portion  212  is provided with a fifth opening  214 , the second mounting portion  212  is provided with a first side surface, and the first side surface is used for detachably connecting with the mounting surface; the first end of the second bearing portion  216  is connected to the first side surface, and the second bearing portion  216  is provided with a sixth opening and an accommodating portion in communication, wherein the sixth opening is located at the second end of the second bearing portion  216 , and the locking member  116  extends into the accommodating portion via the fifth opening  214 , and the locking member  116  can move relative to the sixth opening and is locked to or separated from the fixing member  106 . 
     In this embodiment, the locking member  116  moves relative to the sixth opening and engages or disengages from the fixing member  106 . When the locking member  116  extends out of the sixth opening, the locking member  116  engages the fixing member  106 . When the locking member  116  extends into the sixth opening, the locking member  116  disengages from the fixing member  106 . A first end of the second bearing portion  216  is connected to the second mounting part  212 , and a second end of the second bearing portion  216  is provided with a sixth opening, so that a user needs to press the locking member  116  via the fifth opening  214 . Furthermore, since the first side surface of the second mounting portion  212  can be connected to a mounting surface, the second mounting portion  212  is mounted on an outside surface of the cooking appliance. The second mounting portion  212  is detachably connected to the outside surface of the cooking appliance, and the second mounting portion  212  can be detached from the outside surface of the cooking appliance on the outside of the cooking appliance when the lock structure is damaged so as not to open the door body of the cooking appliance. The removal of the lock structure from the outside of the cooking appliance enables the door body of the cooking appliance to be opened by removing the lock structure even if the lock structure is damaged, thereby further improving the user convenience in using the lock structure. 
     In one possible embodiment, the second mounting portion  212  extends beyond the circumferential edge of the second bearing portion  216 , and the second mounting portion  212  extends beyond the circumferential edge of the second bearing portion  216  is configured to abut against the mounting surface. 
     In this embodiment, the end of the second mounting portion  212  facing the second bearing portion  216  is a first side surface, the end of the second bearing portion  216  facing the second mounting portion  212  is a second side surface, and the area of the first side surface is larger than the area of the second side surface, so that the second mounting portion  212  may protrude beyond the circumferential edge of the second bearing portion  216 . Since the first side surface of the second mounting portion  212  is used for connection with the mounting surface, the portion of the second mounting portion  212  protruding beyond the circumferential edge of the second bearing portion  216  can contact the mounting surface, and the second mounting portion  212  has a larger contact area with the mounting surface, improving the connection stability of the lock structure with the outer surface of the cooking appliance. 
     In connection with  FIGS.  13 ,  14 ,  15 ,  19 , and  20   , in some embodiments of the present disclosure, a cooking appliance is provided. The cooking appliance comprises a cavity body assembly  102 , a door body assembly  104 , and the lock structure according to one or more of the embodiments described above. The door body assembly  104  is in an open-close connection with the cavity body assembly  102 ; among these, the fixing member  106  is provided in one of the cavity body assembly  102  and the door body assembly  104 , and the locking assembly  108  is provided in the other of the cavity body assembly  102  and the door body assembly  104 . 
     The cooking appliance provided in this example has the full benefit of the lock structure provided in any of the above examples. 
     The cooking appliance provided in this embodiment comprises a cavity body assembly  102 , a door body assembly  104 , and a lock structure in any of the designs described above. The cavity body ‘ 102  assembly comprises a cooking cavity, and the cooking cavity is used for placing the food to be cooked; the door body assembly  104  is connected to the cavity body assembly  102  and is used to open or close the cooking cavity. For example, the door body assembly  104  may be rotatably connected to the cavity body assembly  102  or slidably connected to the cavity body assembly  102 .One of the cavity body assembly  102  and the door body assembly  104  is provided with a fixing member  106 , and the other of the cavity body assembly  102  and the door body assembly  104  is a locking assembly  108 , and the locking assembly  108  cooperates with the fixing member  106  to lock the door body assembly  104  on the cavity body assembly  102 . For example, the above-mentioned locking assembly  108  is a child lock and functions as an auxiliary connection. 
     When the door body assembly  104  is in a closed state, the locking member  116  is in a locking station; the locking member  116  is now connected to the fixing member  106  and the user cannot open the door body assembly  104 . The connection for restraining between the locking member  116  and the fixing member  106  is removed before opening the door body assembly  104 ; at this time, the locking member  116  is at the unlocking station, and the locking member  116  is separated from the fixing member  106 . 
     In the process of opening the door body assembly  104 , the door body assembly  104  can be directly driven to separate from the cavity body assembly  102  so as to complete a door opening operation; at this time, the locking member  116  is still in the unlocking station. In the process of closing the door body assembly  104 , the work position of the locking member  116  can be switched again after the door body assembly  104  is directly closed, so that the locking member  116  is connected to the fixing member  106  for restraining. 
     In one possible embodiment, the cavity body assembly  102  comprises a cavity body  144  and a cover body  146  surrounding at least a portion of the cavity body  144 . 
     In this embodiment, the cavity body assembly  102  comprises a cavity body  144  and a cover body  146 . The cavity body  144  is provided with a cooking cavity, and the cooking cavity is used for placing the food to be cooked; the cover body  146  surrounds at least a portion of the cavity body  144 , thereby providing good protection for the cavity body  144 . In addition, there is a certain mounting cavity between the cavity body  144  and the cover body  146 , so that the relevant components of the cooking appliance are mounted in the mounting cavity between the cavity body  144  and the cover body  146 . 
     In one possible embodiment, the door body assembly  104  further comprises a door body  148 , a door seal  150 , and a lock catch  152 , wherein the door seal  150  is connected to the door body  148 , a lock catch  152  is provided on the door body  148  or the door seal  150  for open-close connection with the cavity body assembly  102 . 
     In this embodiment, the door body assembly  104  comprises a door body  148 , a door seal  150 , and a lock catch  152 . The door body  148  is connected with the cavity body assembly  102  and can be used to open or close the cooking cavity; the door seal  150  interfaces with the door body  148  and provides a good seal when the door body  148  closes the cooking cavity to ensure that the cooking cavity seals well during operation. In addition, the lock catch  152  provides either the door body  148  or the door seal  150  for open-close connection with the cavity body assembly  102 . When the door body  148  closes the cooking cavity, the lock catch  152  connects to the cavity body assembly  102  to ensure the connection between the door body assembly  104  and the cavity body assembly  102 . 
     For example, in the cooking appliance provided in the present disclosure, the door body assembly  104  comprises a lock catch  152 , and the lock catch  152  is used for connecting with the cavity body assembly  102 , thereby ensuring a stable connection between the door body assembly  104  and the cavity body assembly  102 . That is, the cooking appliance provided in the present disclosure can first ensure the connection between the door body assembly  104  and the cavity body assembly  102  via the lock catch  152 , and then can use the locking assembly  108  as a child lock, so that the locking assembly  108  cooperates with the fixing member  106  to further restrict the user from opening the door body assembly  104 . 
     In one possible embodiment, a second mounting portion  212  in the second mount  206  is connected to an outer surface of the cover body  146 , which is provided with a mounting hole through which a second bearing portion  216  in the second mount  206  may pass, based on the placement of the locking assembly  108  in the cavity body assembly  102 . 
     In this embodiment, the second mounting portion  212  is detachably connected to the outer surface of the cover body  146 , so that the second mounting portion  212  can be detachably connected to the outer surface of the cover body  146  at the outside of the cover body  146  when the lock structure is damaged so as not to open the door body assembly  104  of the cooking appliance. In such a manner that the locking structure is removed from the outside of the cooking appliance, even if the locking structure is damaged, the door body assembly  104  of the cooking appliance can be opened by removing the locking structure, thereby improving the user convenience in using the cooking appliance. In such a manner that the locking structure is removed from the outside of the cooking appliance, even if the lock structure is damaged, can open the door body assembly  104  of the cooking appliance by disassembling the lock structure to improve the user convenience to the cooking appliance. 
     In one possible application, the locking assembly  108  is provided on the top wall of the cover body  146  such that the user operates on the locking assembly  108 . 
     In one possible application, the second mounting portion  212  is provided with a through-hole and the cover body  146  is provided with a threaded hole, and the second mounting portion  212  is secured to the cover body  146  by passing a bolt through the through-hole in the second mounting portion  212  and locking the bolt to the threaded hole. 
     In some possible embodiments, the fixing member  106  is connected to the door body  148  based on the fixing member  106  being provided on the door body assembly  104 . 
     In this embodiment, the fixing member  106  may be provided at the door body assembly  104 . The fixing member  106  is provided in the door body assembly  104 , it may be that the fixing member  106  is connected to the door body  148 . At this time, the locking assembly  108  is provided in the cavity body assembly  102 , thereby ensuring that the locking assembly  108  corresponds to the position of the fixing member  106 . For example, a fastener such as a bolt can be used for connection between the fixing member  106  and the door body  148 , or a snap fit may be used. 
     In addition, the door body  148  itself has a good strength and hardness, and connecting the fixing member  106  with the door body  148  can further ensure the secure connection of the fixing member  106 , and improve the mating stability of the locking assembly  108  and the fixing member  106 , so as to extend the service life of the fixing member  106  and the whole cooking appliance. 
     In some possible embodiments, the fixing member  106  is connected to the door seal  150  based on the fixing member  106  being provided on the door body assembly  104 . 
     In this embodiment, the fixing member  106  may be provided at the door body assembly  104 . Where the fixing member  106  is provided in the door body assembly  104 , it may be that the fixing member  106  is connected to the door seal  150 . At this time, the locking assembly  108  is provided in the cavity body assembly  102 , thereby ensuring that the locking assembly  108  corresponds to the position of the fixing member  106 . For example, a fastener such as a bolt can be used for connection between the fixing member  106  and the door seal  150 , or a snap fit may be used. 
     Additionally, during the use of the cooking appliance, the door seal  150  is in direct contact with the cavity body assembly  102  and is closer to the cavity body assembly  102  than the door body  148 . Thus, mounting the fixing member  106  in the door seal  150  reduces the size requirements for the fixing member  106  and simplifies the construction of the fixing member  106  as well as the entire cooking appliance. 
     In some possible embodiments, the fixing member  106  and the door body  148  are of an integrated structure based on the providing of the fixing member  106  to the door body assembly  104 . 
     In this embodiment, the fixing member  106  may be provided at the door body assembly  104 . When the fixing member  106  is provided in the door body assembly  104 , the fixing member  106  and the door body  148  can be an integrated structure. The fixing member  106  and the door body  148  are of an integrated structure, which on the one hand can reduce the use of connectors between the fixing member  106  and the door body  148 , and on the other hand can greatly improve the connection strength between the fixing member  106  and the door body  148 , thereby ensuring the connection stability of the fixing member  106  and the locking member  116 , so as to prolong the service life of the fixing member  106  and the whole cooking appliance. 
     In some possible embodiments, the fixing member  106  and the door seal  150  are of an integrated structure based on the fixing member  106  being placed in the door body assembly  104 . 
     In this embodiment, the fixing member  106  may be provided at the door body assembly  104 . When the fixing member  106  is provided in the door body assembly  104 , the fixing member  106  and the door seal  150  are of an integrated structure. The fixing member  106  and the door seal  150  are of an integrated structure, which on the one hand can reduce the use of connectors between the fixing member  106  and the door seal  150 , and on the other hand can greatly improve the connection strength between the fixing member  106  and the door seal  150 , thereby ensuring the connection stability of the fixing member  106  and the locking member  116 , so as to prolong the service life of the fixing member  106  and the whole cooking appliance. 
     In one possible embodiment, the fixing member  106  is connected to the cavity body  144  based on the fixing member  106  being provided on the cavity body assembly  102 . 
     In this embodiment, the fixing member  106  may be provided at the cavity body assembly  102 . The fixing member  106  is provided in the cavity body assembly  102 , it may be that the fixing member  106  is connected to the cavity body  144 . At this time, the locking assembly  108  is provided in the door body assembly  104 , thereby ensuring that the locking assembly  108  corresponds to the position of the fixing member  106 . For example, a fastener such as a bolt can be used for connection between the fixing member  106  and the cavity body  144 , or a snap fit may be used. 
     In addition, the cavity body assembly  102  itself has good strength and hardness, and connecting the fixing member  106  with the cavity body  144  can further ensure the secure connection of the fixing member  106 , and improve the mating stability of the locking assembly  108  and the fixing member  106 , so as to extend the service life of the fixing member  106  and the whole cooking appliance. 
     In one possible embodiment, the fixing member  106  is connected to the cover body  146  based on the fixing member  106  being provided on the cavity body assembly  102 . 
     In this embodiment, the fixing member  106  may be provided at the cavity body assembly  102 . The fixing member  106  is provided in the cavity body assembly  102 , it may be that the fixing member  106  is connected to the cover body  146 . The locking assembly  108  is now provided in the door body assembly  104 , thereby ensuring that the locking assembly  108  corresponds to the location of the fixing member  106 . For example, a fastener such as a bolt can be used for connection between the fixing member  106  and the cover body  146 , or a snap fit may be used. 
     In addition, the structure of the cover body  146  is relatively simple, and the connection of the fixing member  106  with the cover body  146  can reduce the mounting difficulty of the fixing member  106 , thus improving the assembly efficiency of the locking assembly  108  and the cooking appliance. Furthermore, the connection between the fixing member  106  and the cover body  146  can reduce the structural and manufacturing requirements of the cavity body  144  and further improve the manufacturing efficiency of the cavity body  144 . 
     In one possible embodiment, a second mounting portion  212  in the second mount  206  is connected to an outer surface of the door body  148 , which is provided with a mounting hole through which a second bearing portion  216  in the second mount  206  may pass, based on the placement of the locking assembly  108  in the door body assembly  104 . 
     In this embodiment, the second mounting portion  212  is detachably connected to the outer surface of the door body  148 , so that the second mounting portion  212  can be detachably connected to the outer surface of the door body  148  at the outside of the door body  148  when the locking structure is damaged so as not to open the door body assembly  104  of the cooking appliance. In such a manner that the locking structure is removed from the outside of the cooking appliance, even if the lock structure is damaged, can open the door body assembly  104  of the cooking appliance by disassembling the lock structure to improve the user convenience to the cooking appliance. 
     In one possible application, the second mounting portion  212  is provided with a through-hole and the door body  148  is provided with a threaded hole, and the second mounting portion  212  is secured to the door body  148  by passing a bolt through the through-hole in the second mounting portion  212  and locking the bolt to the threaded hole. 
     In one possible application, the locking assembly  108  is provided on the top wall of the door body  148  such that the user operates on the locking assembly  108 . 
     In one possible embodiment, the cooking appliance comprises a wave oven, an oven, a steaming box, or a steaming and roasting integrated machine. 
     In the present disclosure, the term “plurality” means two or more unless explicitly defined otherwise. The terms “mounted”, “connected”, “fixed” and the like are used broadly and should be construed to include, for example, “connected” may be a fixed connection, a detachable connection, or an integral connection; “connected” may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by a person skilled in the art as the case may be. 
     In the description of the present disclosure, the description of the terms “one embodiment”, “some embodiments”, “a specific embodiment”, etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this description, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any embodiment or example. 
     The above description is only directed to exemplary embodiments of the present disclosure and is not intended to restrain the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.