Baby carriage brake mechanism and baby carriage having the same

The disclosure provides a baby carriage brake mechanism and a baby carriage. The baby carriage brake mechanism includes a frame, a brake drive assembly, linkage assemblies, brake locks and wheels. The brake drive assembly is disposed on the frame. The linkage assemblies are respectively slidably disposed on the frame on both of left and right sides. Both ends of the brake drive assembly are respectively in abutting connection with the two linkage assemblies. The linkage assemblies are coupled to the brake locks. Two wheels are respectively pivotally disposed at both sides of the frame. By driving the brake drive assembly to push the linkage assemblies to act with the brake locks, the brake locks on both sides are engaged with the wheels, thereby locking the wheels on both sides. Therefore, the baby carriage brake mechanism of the disclosure may brake wheels on both sides simultaneously with simple operation.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is based upon and claims priority to Chinese Patent Application No. 202010659794.8, filed on Jul. 9, 2020, the entire contents thereof are incorporated herein by reference.

TECHNICAL FIELD

The disclosure relates to the field of baby carriages, and particularly a baby carriage brake mechanism and a baby carriage having the same.

BACKGROUND

A baby carriage is a tool carriage designed to facilitate outdoor activities for infants and young children, and it has long been widely used. At present, all the existing baby carriages have a bottom equipped with front wheels and rear wheels. Among them, the number of rear wheels is generally two, and the two rear wheels are respectively provided with a brake mechanism. When the baby carriage needs to be braked, the use has to use his/her foot/feet to step on both of the brake mechanisms of the rear wheels, in order to completely brake the baby carriage. The existing baby carriages have the following problems: firstly, in order to realize a complete braking of the baby carriage, the user has to use foot/feet to separately step on the brake mechanisms of the rear wheels, such way of braking is troublesome and not convenient enough; secondly, the phenomenon that the use steps only one of the brake mechanisms of the rear wheels on one side are often happen, so the baby carriage is not fully braked, resulting in the possibility that the baby carriage may slip, and there is a great safety problem.

Therefore, there is an urgent need for a baby carriage brake mechanism that is easy to operate and can brake both wheels at the same time, and a baby carriage having the baby carriage brake mechanism.

SUMMARY

The first object of the disclosure is to provide a baby carriage brake mechanism that is easy to operate and can brake both wheels at the same time.

The second object of the disclosure is to provide a baby carriage, the baby carriage has the baby carriage brake mechanism mentioned above, By such baby carriage brake mechanism can realizes simultaneous braking of the wheels on both sides, thereby improving simplicity of operating the brake of the baby carriage.

In order to achieve the above-mentioned first objective, the disclosure provides a baby carriage brake mechanism, which comprises a frame, brake drive assembly, two linkage assemblies, brake locks and wheels. The brake drive assembly is disposed on the frame, the two linkage assemblies are respectively slidably disposed on both left and right sides of the frame, both ends of the brake drive assembly are respectively in abutting connection with the two linkage assemblies, all the linkage assemblies are coupled to the brake locks, two of the wheels are pivotally disposed at both of left and right sides of the frame respectively, and the linkage assemblies may act together with the brake locks by the brake drive assembly driven to push, the brake locks on both sides are engaged with the wheels.

Compared with the related art, in the baby carriage brake mechanism of the disclosure, the linkage assemblies on both side slide by pushing of the brake drive assembly, so the linkage assemblies on both sides drive the brake locks on both to act, such that the brake locks on both sides are respectively engaged with the wheels on both sides and lock the wheels on both sides. Therefore, the baby carriage brake mechanism of the disclosure can brake the wheels on both sides at the same time, and the operation is simple and convenient.

Preferably, the brake drive assembly comprises a brake pedal and two drive members. The brake pedal is upward and downward slidably disposed on the frame. Both ends of the brake pedal are respectively in abutting connection with the two drive members. The drive members are leftward and rightward slidably disposed on the frame. The drive members are in abutting connection with the linkage assemblies. The two drive members may slide by the brake pedal driven to slide, such that the two drive members respectively drive the two linkage assemblies to act.

Preferably, first inclined surfaces are provided on both sides of the brake pedal, second inclined surfaces are provided at every ends of the drive members, and the first inclined surfaces are cooperatively coupled to the second inclined surfaces.

Preferably, the brake drive assembly further comprises an elastically deformable positioning member. The brake pedal has a first tracking slot and a second tracking slot. The first tracking slot is located below the second tracking slot. One end of the first tracking slot is in communication with one end of the second tracking slot. One end of the positioning member is fixed in the frame. By the brake pedal driven to slide, the other end of the positioning member may be alternately engaged at a lowest position of the first tracking slot and a lowest position of the second tracking slot.

Preferably, both the first tracking slot and the second tracking slot have a concave structure, both ends of the first tracking slot are respectively in communication with both ends of the second tracking slot.

Preferably, both of the first tracking slot and the second tracking slot are V-shaped.

Preferably, the brake drive assembly further comprises a first elastic resetting member for resetting the brake pedal. The first elastic resetting member is disposed between the brake pedal and the frame.

Preferably, the brake pedal has a first groove, and one end of the first elastic resetting member is inserted into the first groove.

Preferably, the frame has a second groove, and the other end of the first elastic resetting member is inserted into the second groove.

Preferably, each of the drive members along sliding direction has a first limiting slot, the frame has a first limiting shaft, and the first limiting shaft is slidably inserted into the first limiting slot.

Preferably, the brake drive assembly comprises a brake pedal and drive members. The brake pedal is fixedly connected to the drive members. The drive members is pivotally coupled to the frame. Both ends of the drive members are respectively in abutting connection with the two linkage assemblies. By the brake pedal driven to rotate together with the drive members, the drive members may act to push the linkage assemblies.

Preferably, the drive members comprise a driving body and two driving parts. The driving body is pivotally coupled to the frame. The two driving parts are respectively protruding at both ends of the driving body. The driving parts are in abutting connection with the linkage assemblies.

Preferably, the drive members are each provided with a dodging slot along its rotation direction.

Preferably, one of the brake pedal and the frame has at least two positioning slots, the other one of the brake pedal and the frame has a bump. By rotating of the brake pedal, the bump may be engaged with one of the positioning slots.

Preferably, each of the linkage assemblies comprises a pushing part and a pulling part. Both the pushing part and the pulling part are upward and downward slidably disposed in the frame. The pulling part is fixedly connected to the brake locks. The pushing part may slide by pushing of the brake drive assembly, such that the pushing part may push the pulling part to slide together with the brake locks.

Preferably, the brake drive assembly is provided with a third inclined surface, the pushing part is provided with a fourth inclined surface, and the third inclined surface is cooperatively coupled to the fourth inclined surface.

Preferably, the pushing part comprises a pushing member and a plug pin. The pushing member is upward and downward slidably disposed in the frame. One end of the plug pin is fixedly connected to the pushing member, and the other end of the plug pin is in abutting connection with the pulling part.

Preferably, the plug pin is located above the pulling part.

Preferably, the pushing member along it sliding direction is provided with a second limiting slot, the frame is provided with a second limiting shaft, and the second limiting shaft is slidably inserted into the second limiting slot.

Preferably, the pushing part comprises a first roller and a plug pin. The first roller is pivotally connected to the plug pin. The first roller is in abutting connection with the brake drive assembly. The plug pin is upward and downward slidably disposed in the frame, and the plug pin is in abutting connection with the pulling part.

Preferably, the linkage assemblies each further comprises a second elastic resetting member for resetting the pushing part. The second elastic resetting member is disposed between the pushing part and the frame.

Preferably, the pulling part comprises a first fixing member and a first traction member. The first fixing member is upward and downward slidably disposed in the frame. One end of the first traction member is fixedly connected to the first fixing member, and the other end of the first traction member is fixedly connected to the brake locks. By sliding of the first fixing member and pulling of the first traction member, the first traction member may pull the brake locks, such that the brake locks are engaged with the wheels.

Preferably, a middle portion of the first traction member has an inverted U-shaped structure and is supported on the frame, such that the first traction member moves by sliding down of the first fixing member.

Preferably, the pulling part further comprises a reversing member. The reversing member is fixed in the frame and located a side of the first fixing member. The inverted U-shaped structure of the first traction member is disposed to penetrate into the reversing member.

Preferably, the reversing member has a second roller pivotally connected thereto. The first traction member is wound on the second roller.

Preferably, the pulling part further comprises a second fixing member. The second fixing member is upward and downward slidably disposed in the frame. One end of the second fixing member is fixedly connected to the first traction member, and the other end of the second fixing member is fixedly connected to the brake locks.

Preferably, the pulling part further comprises a third elastic resetting member for resetting the second fixing member. The third elastic resetting member is disposed between the second fixing member and the frame.

Preferably, the first traction member is a steel wire.

Preferably, the wheels each along its rotation direction is provided with several engaging slots. The brake locks may be engaged with or disengaged from the engaging slots.

Preferably, the wheels each may comprise a wheel body and a wheel hub. The wheel body is pivotally connected to the frame. The wheel hub is sleeved on the wheel body. The engaging slots are disposed on the wheel hub.

In order to achieve the above-mentioned second objective, the disclosure provides a baby carriage, which comprises a seat part, and further comprises the baby carriage brake mechanism mentioned above with a seat part disposed on the frame.

Compared with the related art, since the baby carriage of the disclosure is provided with the baby carriage brake mechanism, by driving the brake drive assembly to push the linkage assemblies on both sides to slide, the linkage assemblies on both sides may drive the brake locks on both to act, such that the brake locks on both sides are respectively engaged with the wheels on both sides and lock the wheels on both sides. Therefore, the baby carriage of the disclosure can brake the wheels on both sides at the same time by operating the baby carriage brake mechanism, and has the characteristics of simple operation.

Preferably, the frame comprises a frame body and two rotating parts. The two rotating parts are pivotally connected to both sides of the frame body respectively, and the wheels are pivotally connected to the rotating parts.

Preferably, the baby carriage of the disclosure further comprises a push and drift operating part and rotation orientation assemblies. The push and drift operating part is disposed on the frame body, one end of the rotation orientation assemblies is coupled to the push and drift operating part, and the other end of the rotation orientation assemblies is engaged between the frame body and the rotating parts. By operation of the push and drift operating part, the rotation orientation assemblies may be disengaged from the rotating parts.

Preferably, the rotation orientation assemblies each comprises a second traction member and a orienting member. The push and drift operating part is connected to one end of the second traction member and can pull the second traction member, and the other end of the second traction member is coupled to the orienting member. The orienting member is engaged between the frame body and the rotating parts.

Preferably, the rotation orientation assemblies each further comprises a fourth elastic resetting member for resetting the orienting member. The fourth elastic resetting member is disposed between the orienting member and the frame body.

Preferably, the second traction member is a steel wire.

DETAILED DESCRIPTION

In order to describe the technical content and structural features of the disclosure in detail, the following illustration is provided conjunction with the embodiments and the accompanying drawings.

Referring toFIGS.1,2and5, the baby carriage200of the disclosure comprises a seat part201and a baby carriage brake mechanism100.

Referring toFIGS.5,12and15, in a first embodiment of the baby carriage brake mechanism100, the baby carriage brake mechanism100comprises a frame1, a brake drive assembly, two linkage assemblies4, brake locks5and wheels6. The brake drive assembly is disposed on the frame1. The two linkage assemblies4are slidably disposed on both of left and right sides of the frame1respectively. Both ends of the brake drive assembly are respectively in abutting connection with the two linkage assemblies4. The linkage assemblies4are coupled to the brake locks5. Two of the wheels6are respectively pivotally disposed at both of left and right sides of the frame1. By driving the brake drive assembly to push the linkage assemblies4to act together with the brake locks5, the brake locks5on both sides may be engaged with the wheels6, such that the wheels on both sides may be braked at the same time. The seat part201disposed on the frame1is suitable for baby to sit. Moreover, the brake drive assembly comprises a brake pedal2and drive members3. The brake pedal2is upward and downward slidably disposed at a middle of the frame1. Specifically, the brake pedal2is upward and downward slidably disposed on mounting member13of the frame1. The linkage assemblies4are upward and downward slidably disposed on the frame1. Both ends of the brake pedal2are respectively in abutting connection with the two drive members3. The drive members3are leftward and rightward slidably disposed on the frame1. The drive members3are in abutting connection with the linkage assemblies4. Specifically, one end of each of the drive members3is leftward and rightward slidably disposed in the mounting members13. Each of the drive members3has a first limiting slot32along sliding direction, and a first limiting shaft112is disposed on the frame1. The first limiting shaft112is slidably inserted into the first limiting slot32, that is, the first limiting shaft112and the first limiting slot32of the drive members3may slide in respect to each other, and the first limiting shaft112can play a limiting role, but the disclosure is not limited to this. By driving the brake pedal2to slide, the two drive members3may be pushed to slide, such that the two drive members3respectively push the two linkage assemblies4to act; and in turn, the action of the two linkage assemblies4may drive the brake locks5on both sides to move, such that the brake locks5on both sides are engaged with the wheels6, thereby simultaneously stopping/braking the wheels on both sides.

Referring toFIGS.5and8, in this embodiment, the brake pedal2is located above the two drive members3. The brake pedal2has first inclined surfaces21on both sides. One end of each of the drive members3has a second inclined surface31. The first inclined surfaces21are cooperatively coupled to the second inclined surfaces31. Under a cooperative action of the first inclined surfaces21and the second inclined surfaces31, by driving the brake pedal2to slide down, the brake pedal2may push the drive members3to respectively slide toward both of left and right sides. But the disclosure is not limited thereto. For example, an existing chute drive maybe used between the brake pedal2and the drive members3. Specifically, the brake drive assembly may further comprise a first elastic resetting member8for resetting the brake pedal2. The first elastic resetting member8is disposed between the brake pedal2and the frame1. When the brake pedal2is driven to slide down, the brake pedal2may compress the first elastic resetting member8. When the brake pedal2is free/unconstrained, the brake pedal2may slide up and be reset under action of the first elastic resetting member8. Specifically, the brake pedal2has a first groove24, and one end of the first elastic resetting member8is inserted into the first groove24; moreover, the frame1has a second groove111therein, and the other end of the first elastic resetting member8is inserted into the second groove111. Positioning of the first elastic resetting member8may be performed by the first groove24and the second groove111. But the disclosure is not limited thereto.

Referring toFIGS.5-7, in this embodiment, the brake drive assembly may further comprise an elastically deformable positioning member7. The brake pedal2may have a first tracking slot22and a second tracking slot23. The first tracking slot22is located below the second tracking slot23. One end of the first tracking slot22is in communication with one end of the second tracking slot23. One end of the positioning member7is fixed in the frame1. By driving the brake pedal2to slide, the other end of the positioning member7may be alternately engaged at a lowest position of the first tracking slot22and a lowest position of the second tracking slot23. Specifically, both of the first tracking slot22and the second tracking slot23have a concave structure, and both ends of the first tracking slot22are respectively in communication with both ends of the second tracking slot23, such that the first tracking slot22and the second tracking slot23form a closed track. Moreover, both of the first tracking slot22and the second tracking slot23are V-shaped. But the disclosure is not limited thereto. For example, the first tracking slot22and the second tracking slot23may also be U-shaped, or may be obliquely upward long slots. Initially, as shown inFIG.6, the other end of the positioning member7is engaged at a lowest position of the first tracking slot22(i.e., a middle of the first tracking slot22). After the brake pedal2is stepped on to slide, the other end of the positioning member7may slide from the track on the side of the first tracking slot22to the side of the second tracking slot23, and slide to a lowest position of the second tracking slot23by its own elastic restoring force (i.e., a middle of the second tracking slot23), as shown inFIG.7, in order to realize positioning of the brake pedal2, such that the two drive members3may respectively drive the two linkage assemblies4to act together with the two brake locks5, and then the brake locks5on both sides remain engaged with the wheels6, thereby keeping the brake pedal2locked to the wheels6. When the brake pedal2is stepped on again to slide down, the other end of the positioning member7may slide along the track on the other side of the second tracking slot23, and under the elastic restoring force of the positioning member7its own the cooperation of the first elastic resetting member8pushing the brake pedal2to be reset, the positioning member7may slide form the second tracking slot23to a lowest position of the first tracking slot22as shown inFIG.6, so as to realize resetting of the brake pedal2; then the brake pedal2would no longer to drive the drive members3to slide, drive members3, the linkage assemblies4and the brake locks5are reset, and the brake locks5disengaged from the wheels6, thereby keep the cooperation of the brake pedal2to the wheels6.

Referring toFIGS.9-14, the linkage assemblies4each may comprises a pushing part41and a pulling part42. The pushing part41may be upward and downward slidably disposed in the frame1. The pulling part42may be upward and downward slidably disposed in the frame1. The pulling part42is fixedly connected to the brake locks5. By sliding of the drive members3of the brake drive assembly, the pushing part41may be pushed to slide, such that the pushing part41may push the pulling part42to slide together with the brake locks5. Specifically, each of the drive members3of the brake drive assembly may have a third inclined surface33, and the pushing part41may have a fourth inclined surface411. The third inclined surface33of the drive members3may be located above the fourth inclined surface411of the pushing part41, and the third inclined surface33is cooperatively coupled to the fourth inclined surface411. More specifically, the pushing part41is located above the pulling part42, and the pushing part41may slide down and push the pulling part42to slide. By driving the drive members3to slide respectively toward both of left and right sides, under cooperative action of the third inclined surfaces33and the fourth inclined surfaces411, the drive members3may push the pushing part41to slide down, and sliding down of the pushing part41may push the pulling part42to slide together with the brake locks5, so the brake locks5on both sides are engaged with the wheels6, thereby locking the wheels6on both sides. But the disclosure is not limited thereto. For example, an existing chute drive maybe used between the drive members3and the pushing part41, or the third inclined surfaces33of the drive members3may be located below the fourth inclined surfaces411of the pushing parts41. By the drive members3driving the pushing part41to slide, the pushing part41may push up the pulling part42to slide up, such that the pulling part42pulls the brake locks5and engages the brake locks5with the wheels6.

Continuously referring toFIGS.9-14, in this embodiment, the pushing part41comprises the pushing member412and the plug pin413. The pushing member412is upward and downward slidably disposed in the frame1. One end of the plug pin413is fixedly connected to the pushing member412, and the other end of the plug pin413is in abutting connection with the pulling part42. The plug pin413is located above the pulling part42. Specifically, the pushing member412has a second limiting slot412aalong its sliding direction, the frame1has a second limiting shaft113, and the second limiting shaft113may be slidably inserted into the second limiting slot412a, i.e., the second limiting shaft113and the second limiting slot412aof the pushing member412may slide in respect to each other, and the second limiting shaft113can play a limiting role. But the disclosure is not limited thereto. Furthermore, the linkage assemblies4each may further comprises a second elastic resetting member43for resetting the pushing part41, the second elastic resetting member43is disposed between the pushing part41and the frame1. More specifically, the second elastic resetting member43is sleeved on the plug pin413. But the disclosure is not limited thereto. Moreover, an existing elastic member such as a compression spring may be used for the second elastic resetting member43.

Please continue to refer toFIGS.9-14, in this embodiment, the pulling part42comprises the first fixing member421and the first traction member422. The first fixing member421is upward and downward slidably disposed in the frame1and located below the pushing part41. One end of the first traction member422is fixedly connected to the first fixing member421, and the other end of the first traction member42is fixedly connected to the brake locks5. A middle portion of the first traction member422has an inverted U-shaped structure422aand is supported on the frame1. By the first fixing member421sliding down and pulling the first traction member422, the first traction member422may pull the brake locks5up, such that the brake locks5are engaged with the wheels6. By the plug pin413of the pushing part41pushing the first fixing member421to slide down, the first fixing member421may pull one end of the first traction member422to slide down. Since the middle portion of the first traction member422has an inverted U-shaped structure422aand is supported on the frame1, the other end of the first traction member422may rise and pull the brake locks5, such that the brake locks5rise and are engaged with the wheels6, thereby locking the wheels6. Specifically, the pulling part42may further comprise a reversing member423. The reversing member423is fixed in the frame1and located on a side of the first fixing member421. The inverted U-shaped structure422aof the first traction member422is disposed to penetrate into the reversing member423and is supported in the reversing member423. More specifically, the pulling part42may further comprise a second fixing member424. The second fixing member424is upward and downward slidably disposed in the frame1. One end of the second fixing member424is fixedly connected to the first traction member422, and the other end of the second fixing member424is fixedly connected to the brake locks5. But the disclosure is not limited thereto. For example, the first traction member422may be fixedly connected to the brake locks5. Moreover, an existing steel wire may be used for the first traction member422. But the disclosure is not limited thereto, and an existing rope or the like may be used for the first traction member422. Furthermore, the pulling part42may further comprise a third elastic resetting member425for resetting the second fixing member424. The third elastic resetting member425is disposed between the second fixing member424and the frame1. When the first traction member422pulls the second fixing member424to slide up, the second fixing member424compresses the third elastic resetting member425. When the second fixing member424is released, the second fixing member424may slide down and is reset under action of the elastic restoring force of the third elastic resetting member425, so as to drive the brake locks5to slide and are reset, and the brake locks5are disengaged from the wheels6.

Referring toFIG.15, the wheel6along its rotation direction has several engaging slots621. The brake lock5may be engaged with or disengaged from the engaging slots621. In this embodiment, the wheel6comprises a wheel body61and a wheel hub62. The wheel body61is pivotally connected to the frame1. The wheel hub62is sleeved on the wheel body61, and the engaging slots621are disposed on the wheel hub62. But the disclosure is not limited thereto.

Referring toFIGS.5-15, the specific working principle of the baby carriage brake mechanism of the first embodiment of the disclosure100will be provided as follows.

When the wheels6need to be braked, the brake pedal2may be stepped on, which causes the positioning member7to slide from a lowest position of the first tracking slot22to a lowest position of the second tracking slot23, and the brake pedal2is positioned. During the process, the brake pedal2pushes the drive members3on both sides, such that the drive members3slide respectively toward both of left and right sides. The sliding of the drive members3may push the pushing members412of the linkage assemblies4to slide down together with the plug pins413, such that the plug pins413push the first fixing members421to slide down, and cause one ends of the first traction member422down. Meanwhile, the other ends of the first traction members422rise, such that the first traction members422pull the second fixing members424to slide up together with the brake locks5, thereby making the brake locks5engaged with the engaging slots621of the wheels6, and locking the wheels6on both sides. Accordingly, both of the rear wheels of the baby carriage200can be braked by a single stepping, and facility of braking operations of the baby carriage200is improved.

When the wheels6need to be unlocked, the brake pedal2may be stepped again, which causes the positioning member7to slide from the lowest position of the second tracking slot23to the lowest position of the first tracking slot22, and the brake pedal2is reset to slide up under action of the first elastic resetting member8. At this time, the entire linkage assemblies4may be reset under action of the second elastic resetting members43and the third elastic resetting members425, and the brake locks5are driven to be reset, such that the brake locks5are disengaged from the wheels6, thereby unlocking the wheels6on both sides.

Referring toFIGS.16,22and24, in the second embodiment, the baby carriage brake mechanism100comprises a frame1, a brake drive assembly, two linkage assemblies4, brake locks5, and wheels6. The brake drive assembly is disposed on the frame1, the two linkage assemblies4are respectively slidably disposed on both of left and right sides of the frame1. Both ends of the brake drive assembly are respectively in abutting connection with the two linkage assemblies4. Both the linkage assemblies4are coupled to the brake locks5. Two wheels6are pivotally disposed at both of left and right sides of the frame1respectively. By driving the brake drive assembly to drive the linkage assemblies4to act together with the brake locks5, the brake locks5on both sides may be engaged with wheels6, so the wheels on both sides can be braked at the same time. A seat part201is disposed on the frame1. The seat part201serves for infant to sit. Moreover, the brake drive assembly comprises a brake pedal2and a drive member3. The brake pedal2is fixedly connected to the drive member3. The drive member3is pivotally connected to the frame1. Both ends of the drive member3are respectively in abutting connection with the two linkage assemblies4. By driving the brake pedal2to rotate together with the drive member3, the drive member3may push the linkage assemblies4to act. At least one of wheels6has several engaging slots621along its rotation direction, and brake locks5may be engaged with or disengaged from the engaging slots621.

Referring toFIGS.16-18, the drive member3comprises a driving body34and driving parts35. The driving body34is pivotally coupled to the frame1, and the driving parts35are respectively protruding at both ends of the driving body34. The driving parts35are in abutting connection with the linkage assemblies4. The linkage assemblies4are located below the driving parts35. By driving the drive members3to rotate, the driving parts35may rotate and cause the linkage assemblies4to slide down, so as to drive the brake locks5to move. Accordingly, the brake locks5on both are engaged with the wheels6. Specifically, the drive member3has a dodging slot36along its rotation direction, which is used for dodging the protrusions in the frame1., as well as limit the rotation of the driving member3.

Referring toFIGS.18and19, the brake pedal2has, but not limited to, two positioning slots25. In other embodiments, the number of the positioning slots25may be three, four, etc. The frame1has a bump114therein. By rotating of the brake pedal2, the bump114may be engaged with one of the positioning slots25, thereby positioning the brake pedal2. But the disclosure is not limited thereto. For example, the positioning slots25may be disposed on the frame, and the bump114may be disposed on the brake pedal2.

Referring toFIGS.20-23, the linkage assembly4comprises a pushing part41and a. In this embodiment, both the pushing part41and pulling part42are upward and downward slidably disposed in the frame1. The pulling part42is fixedly connected to a brake lock5. By the brake drive assembly pushing the pushing part41to slide, the pushing part41may push the pulling part42to slide together with the brake lock5. Specifically, the pushing part41comprises a first roller414and a plug pin413. The first roller414is pivotally coupled to the plug pin413, and the first roller414is in abutting connection with the brake drive assembly. The plug pin413is upward and downward slidably disposed in the frame1, and the plug pin413is in abutting connection with the pulling part42. By driving the drive members3to rotate, the driving parts35of the drive members3may push the first roller414, such that the first roller414slide down together with the plug pin413. Wherein, the first roller414can reduce the friction force received when the driving parts35rotates to push the first roller414. Furthermore, a second elastic resetting member43for resetting plug pin413is provided between the plug pin413and the frame1. Moreover, a compression spring may be used for the second elastic resetting member43, and the second elastic resetting member43may be sleeved on the plug pin413, but the disclosure is not limited thereto.

Continuously referring toFIGS.20-23, the pulling part42comprises first fixing member421first traction member422. The first fixing member421upward and downward slidably disposed in the frame1and located below the pushing part41. One end of the first traction member422is fixedly connected to the first fixing member421, and the other end of the first traction member422is fixedly connected to the brake lock5. A middle portion of the first traction member422has an inverted U-shaped structure422aand is supported on the frame1. By the first fixing member421sliding down and pulling the first traction member422, the first traction member422may pull the brake lock5up, such that the brake lock5are engaged with the wheels6. By the plug pin413of the pushing part41pushing the first fixing member421to slide down, the first fixing member421may pull one end of the first traction member422to slide down, and the other end of the first traction member422to rise and pull the brake lock5, such that the brake lock5may rise and are engaged with the wheels6, thereby locking the wheels6. Specifically, the pulling part42further comprises a reversing member423. The reversing member423is fixed in the frame1and located on a side of the first fixing member421. An inverted U-shaped structure422aof the first traction member422is disposed to penetrate into the reversing member423and is supported in the reversing member423. Preferably, a second roller423ais pivotally connected to the reversing member423from an inner side, and the first traction member422is wound on the second roller423a. the second roller423amay reduce the friction force received by the first traction member422when it is pulled.

Referring toFIG.24, the pulling part42may further comprise a second fixing member424. The second fixing member424is upward and downward slidably disposed in the frame1. One end of the second fixing member424is fixedly connected to the first traction member422, and the other end of the second fixing member424is fixedly connected to a brake lock5. But the disclosure is not limited thereto. For example, the first traction member422may also be fixedly connected to the brake lock5. Moreover, a steel wire may be used for the first traction member422. But the disclosure is not limited thereto. A rope or the like may also be used for the first traction member422. Furthermore, the pulling part42may further comprise a third elastic resetting member425for resetting the second fixing member424. The third elastic resetting member425is disposed between the second fixing member424and the frame1. When the first traction member422pulls the second fixing member424to slide up, the second fixing member424compresses the third elastic resetting member425. When the second fixing member424is released, the second fixing member424may slide and be reset under action of the elastic restoring force of the third elastic resetting member425, such that the brake lock5is driven to slide and be reset, thereby disengaging the brake lock5from the wheel6.

With reference toFIGS.16-24, the specific working principle of the baby carriage brake mechanism100of the second embodiment of the disclosure will be discussed as follows.

When the wheel6needs to be braked, the brake pedal2may be stepped on, so the brake pedal2rotates together with the drive member3. The driving part35of the drive members3pushes the first roller414of the pushing part41of the linkage assembly4, such that the first roller414slides down together with the plug pin413. In turn, sliding down of the plug pin413may push the first fixing member421of the pulling part42to slide, and pull one end of the first traction member422to down, while the other end of the first traction member422rises, such that the first traction member422pulls the second fixing member424to slide up together with the brake lock5, causing the brake lock5to be engaged with the engaging slots621of the wheel6, thereby locking the wheels6on both sides. In this way, braking of both rear wheels of the baby carriage200may be realized by one stepping on, hence facility of the braking operation of the baby carriage200is improved.

When the wheel6needs to be unlocked, the brake pedal2may be driven to rotate reversely, and the brake pedal2drive the drive member3to rotate and reset, so the entire linkage assembly4would be reset under action of the second elastic resetting member43and the third elastic resetting member425, and drive the brake lock5to reset, accordingly, the brake locks5may disengaged from the wheel6, thereby unlocking the wheels6on both sides.

Referring toFIGS.1and2, a frame1comprises a frame body11, two rotating parts12which are pivotally connected to both of left and right sides of the frame body11respectively, and wheels6pivotally connected to the rotating parts12.

Referring toFIGS.1-4, the baby carriage of the disclosure200may further comprise a push and drift operating part202and a rotation orientation assembly203. The push and drift operating part202is disposed on a frame body11. One end of the rotation orientation assembly203is coupled to the push and drift operating part202, and the other end of the rotation orientation assembly203is engaged between the frame body11and a rotating part12. By operation of the push and drift operating part202, the rotation orientation assemblies203may disengage from the rotating part12. Specifically, the rotation orientation assembly203comprises a second traction member203aand an orienting member203b. The push and drift operating part202is connected to one end of the second traction member203aand may pull the second traction member203a, and the other end of the second traction member203ais connected to the orienting member203b. The orienting member203bis engaged between the frame body11and the rotating part12, so as to lock the frame body11and the rotating part12. By operation the push and drift operating part202, the push and drift operating part202may pull the second traction member203a, such that the second traction member203apull the orienting member203bto slide and disengaged from the rotating part12, thereby unlocking the frame body11and the rotating part12, causing the rotating part12to rotate 360 degrees together with the wheels6in respect to the frame body11. In this embodiment, the wheels6are real wheel. But the disclosure is not limited thereto. Moreover, the second traction member203ais a steel wire, but the disclosure is not limited thereto. An rope or the like may be used for the second traction member203a. Furthermore, the rotation orientation assembly203may further comprise a fourth elastic resetting member203cfor resetting the orienting member203b. The fourth elastic resetting member203cis disposed between the orienting member203band the frame body11. When the push and drift operating part202is operated to drive the second traction member203ain order to pull the positioning member7to slide up, the positioning member7may compress the fourth elastic resetting member203c. After the push and drift operating part202is released, the positioning member7may slide down and be reset under action of the fourth elastic resetting member203c, such that the positioning member7is engaged between the frame body11and the rotating part12again, thereby locking the frame body11and the rotating part12. It would be noted, by pressing the push and drift operating part202to pull the second traction member203ais known in the related art, so the structure of the push and drift operating part202would not be redundantly discussed here.

When the baby carriage200needs to be driftable, the push and drift operating part202may be pressed so the push and drift operating part202may pull the second traction member203a, such that the second traction member203apull the orienting member203bto slide to disengaged from the rotating part12, thereby unlocking the frame body11and the rotating part12, causing the rotating part12to rotate 360 degrees to gather with the wheels6in respect with the frame body11. When the push and drift operating part202is released, the push and drift operating part202reset, and the orienting member203breset and is engaged between the frame body11and the rotating part12under action of the fourth elastic resetting member203c, thereby locking the frame body11and the rotating part12.

In conclusion, the baby carriage200of the disclosure has a baby carriage brake mechanism100. So, by driving the brake drive assembly to push the linkage assemblies4on both sides to slide, the linkage assemblies4on both side may respectively drive the brake locks5on both sides to act, such that the brake locks5on both sides are respectively engaged with the wheels6on both sides, thereby locking the wheels6on both sides. Therefore, the baby carriage of the disclosure200may realize braking of the wheels6on both sides at the same time by operation of the baby carriage brake mechanism100, and is characterized by simple and easy operation. The baby carriage of the disclosure200may also have a push and drift operating part202and a rotation orientation assembly203, so as to realize universal rotating or orienting of the wheels6.

The above disclosure should be considered to be only preferred examples, and the scope of the disclosure cannot be limited thereto. Therefore, all equivalent variants made according to the claims of the disclosure fall within the scope of the disclosure.