SPLIT ELECTRIC RICE COOKER

A split electric rice cooker includes a base, a cooker body, a weighing device, and a press cover. The weighing device includes a weighing sensor and a support leg. The weighing sensor includes a body portion and a cantilever weighing portion. The support leg penetrates downwards through the press cover. A limiting plate is provided in a weighing-device mounting groove of the base. When the cantilever weighing portion is bent upwards and deformed with respect to the body portion, the limiting plate is apt to abut against the cantilever weighing portion to limit a position of the cantilever weighing portion; or the support leg is provided with a limiting portion, and the limiting portion is apt to move with respect to the body portion along with the support leg to abut against a bottom surface of the body portion.

FIELD

The present disclosure relates to a technical field of household appliances, and specifically to a split electric rice cooker.

BACKGROUND

In the related art, small home appliances have been popularized in people's lives, and each family basically possesses an electric rice cooker, an induction cooker and other household appliances. More and more products may be placed in a kitchen with product diversification. In order to reduce household appliances and thus reduce their occupation of the kitchen space, the electric rice cooker and the induction cooker can be integrated into a split electric rice cooker. An existing split electric rice cooker is only provided with a simple weighing device, and when a lot of food is placed in a cooker body, a maximum range of the weighing device will be exceeded, causing a weighing module to be damaged and causing a weighing function to fail.

SUMMARY

The present disclosure seeks to solve one of the above technical problems existing in the related art to at least some extent. Thus, the present disclosure proposes a split electric rice cooker that is able to provide overload protection for a weighing sensor.

The split electric rice cooker according to embodiments of the present disclosure includes: a base provided with a weighing-device mounting groove at a bottom thereof, a limiting plate being provided in the weighing-device mounting groove; a cooker body apt to rest on the base and separable with respect to the base; a weighing device provided in the weighing-device mounting groove, and including a weighing sensor and a support leg connected with the weighing sensor, the weighing sensor being fixed in the weighing-device mounting groove and including a body portion and a cantilever weighing portion, the cantilever weighing portion being provided to the body portion, the cantilever weighing portion being located below the limiting plate, and when the cantilever weighing portion being bent upwards and deformed with respect to the body portion, the limiting plate being apt to abut against the cantilever weighing portion to limit a position of the cantilever weighing portion; and a press cover provided to the bottom of the base and shielding the weighing-device mounting groove, the press cover being provided with a press-cover clearance hole for the support leg to pass downwards.

The split electric rice cooker according to embodiments of the present disclosure can provide overload protection for the weighing sensor, thereby prolonging service life of the weighing sensor.

In addition, the split electric rice cooker according to embodiments of the present disclosure can further have the additional technical features as follows.

According to some embodiments of the present disclosure, a support plate and a vertical snapping plate are provided in the weighing-device mounting groove, and the weighing sensor is sandwiched between the vertical snapping plate and the support plate.

According to some embodiments of the present disclosure, the support plate includes: a first support plate, a second support plate, a third support plate, and a fourth support plate; the first support plate, the second support plate, the third support plate, and the fourth support plate are provided to a first side wall, a second side wall, a third side wall and a fourth side wall of the weighing-device mounting groove respectively; the first side wall, the second side wall, the third side wall and the fourth side wall are connected successively.

According to some embodiments of the present disclosure, the body portion is an annular frame body, and the cantilever weighing portion is provided within the body portion.

According to some embodiments of the present disclosure, the cantilever weighing portion includes a first cantilever and a second cantilever; the first cantilever is T-shaped and includes a transverse section and a longitudinal section; the longitudinal section is connected with the body portion, and two ends of the transverse section are separately provided with the second cantilever.

According to some embodiments of the present disclosure, the body portion includes: a first frame bar, a second frame bar, a third frame bar, and a fourth frame bar connected successively; the first frame bar is adjacent to the transverse section; the first frame bar, the second frame bar, the third frame bar, and the fourth frame bar are apt to abut against the first support plate, the second support plate, the third support plate, and the fourth support plate respectively.

According to some embodiments of the present disclosure, the first support plate has an inverted three-step structure; the third support plate has an inverted two-step structure; the first frame bar is apt to abut against a bottom surface of a second step of the first support plate; the transverse section is suspended below a bottom surface of a first step of the first support plate; the first step of the first support plate constitutes the limiting plate; and the third frame bar is apt to abut against a bottom surface of a first step of the third support plate.

According to some embodiments of the present disclosure, the bottom surface of the second step of the first support plate is flush with the bottom surface of the first step of the third support plate.

According to some embodiments of the present disclosure, a third step of the first support plate and a second step of the third support plate clamp and respectively abut against the first frame bar and the third frame bar, so as to limit the position of the body portion in a direction parallel to the longitudinal section.

According to some embodiments of the present disclosure, a bottom surface of the third step of the first support plate and a bottom surface of the second step of the third support plate are each configured as a guide bevel.

According to some embodiments of the present disclosure, the second support plate and the fourth support plate are respectively located outside the second cantilevers of the corresponding sides to evade the second cantilevers.

According to some embodiments of the present disclosure, a limiting protrusion is provided on each of the second support plate and the fourth support plate, and the limiting protrusion on the second support plate and the limiting protrusion on the fourth support plate clamp and respectively abut against the second frame bar and the fourth frame bar, so as to limit the position of the body portion in a direction parallel to the transverse section.

According to some embodiments of the present disclosure, each of the second support plate and the fourth support plate is divided into two sections spaced apart from each other, and one vertical snapping plate is disposed between the two sections.

According to some embodiments of the present disclosure, the bottom of the base is further provided with an catching groove, the press cover is further provided with a pre-assembled catching portion, and the pre-assembled catching portion is engaged within the catching groove.

According to some embodiments of the present disclosure, the press cover is further fastened to the bottom of the base through a press-cover threaded assembly.

According to some embodiments of the present disclosure, a distance between the cantilever weighing portion and the limiting plate is L, deformation displacement of the cantilever weighing portion with respect to the body portion is associated with the weight to be weighed, and the deformation displacement of the cantilever weighing portion is S when the weighing sensor510is in a maximum range, in which L≤S.

According to some embodiments of the present disclosure, the press cover and the support leg are integrally formed, and the support leg is supported on a bottom surface of the cantilever weighing portion and is able to be deformed along with the press cover and push the cantilever weighing portion upwards

According to some embodiments of the present disclosure, the weighing sensor is provided with a mounting hole, an upper surface of the support leg is fixed with a fixing column, the fixing column is provided through the mounting hole and has an upper end formed with a diameter-enlarged portion, and a radial dimension of the diameter-enlarged portion is larger than a radial dimension of the mounting hole, such that the weighing sensor is clamped and fixed between the diameter-enlarged portion and the support leg.

The weighing device according to embodiments of the present disclosure includes: a weighing sensor including a body portion and a cantilever weighing portion, the cantilever weighing portion being provided to the body portion; a support leg supported on a bottom surface of the cantilever weighing portion and fixed with the cantilever weighing portion; a limiting portion provided on the support leg and located below the body portion, the limiting portion being apt to move upwards with respect to the body portion along with the support leg to abut against a bottom surface of the body portion.

The weighing device according to embodiments of the present disclosure can prevent the weighing sensor from being overloaded and failing, and prolong service life of the weighing sensor.

In some embodiments of the present disclosure, a distance between the limiting portion and the body portion is L, deformation displacement of the cantilever weighing portion with respect to the body portion is associated with the weight to be weighed, and the deformation displacement of the cantilever weighing portion is S when the weighing sensor is in a maximum range, in which L≤S.

In some embodiments of the present disclosure, the body portion is an annular frame body, and the cantilever weighing portion is provided within the body portion.

In some embodiments of the present disclosure, the cantilever weighing portion includes a first cantilever and a second cantilever; the first cantilever is fixed with the body portion; the second cantilever is fixed with the first cantilever and also fixed with the support leg.

In some embodiments of the present disclosure, the second cantilever is located at each of two sides of the first cantilever.

In some embodiments of the present disclosure, the first cantilever is T-shaped and includes a transverse section and a longitudinal section, and two ends of the transverse section are separately provided with the second cantilever.

In some embodiments of the present disclosure, the support leg includes a support-leg body and a support block provided to the support-leg body, the support block being fixed with the second cantilever.

In some embodiments of the present disclosure, respective lower surfaces of the first cantilever and the second cantilever are flush with each other, and both abut against an upper surface of the support block.

In some embodiments of the present disclosure, the second cantilever is provided with a mounting hole; the weighing device further includes a weighing-device threaded fastener, and the weighing-device threaded fastener is fixed by being threaded with the support block after passing through the mounting hole from the top downwards.

In some embodiments of the present disclosure, a distance between facing-away outer sides of the two second cantilevers is greater than or equal to a transverse length of the support block.

In some embodiments of the present disclosure, the limiting portion is provided to an end face of each of two transverse ends of the support block.

In some embodiments of the present disclosure, a hollowed groove is defined between the body portion and the second cantilever, and an outer side surface of the limiting portion is outside an outer edge of the hollowed groove.

In some embodiments of the present disclosure, the second cantilevers at two sides of the first cantilever are arranged symmetrically, and the first cantilever is spaced apart from and arranged parallel to the second cantilever.

The split electric rice cooker according to embodiments of the present disclosure includes the weighing device.

In some embodiments of the present disclosure, the split electric rice cooker further includes: a base provided with a weighing-device mounting groove at a bottom thereof, the weighing sensor being fixed in the weighing-device mounting groove; a cooker body apt to rest on the base and separable with respect to the base; a press cover provided to the bottom of the base and shielding the weighing-device mounting groove. The press cover is integrally formed with the support leg, the support leg is supported on a bottom surface of the cantilever weighing portion, and the support leg can be deformed along with the press cover and push the cantilever weighing portion upwards; or the press cover is provided with a press-cover clearance hole for the support leg to pass downwards.

In some embodiments of the present disclosure, the weighing sensor is provided with a mounting hole, an upper surface of the support leg is fixed with a fixing column, the fixing column is provided through the mounting hole and has an upper end formed with a diameter-enlarged portion, and a radial dimension of the diameter-enlarged portion is larger than a radial dimension of the mounting hole, such that the weighing sensor is clamped and fixed between the diameter-enlarged portion and the support leg.

REFERENCE NUMERALS

DETAILED DESCRIPTION

The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described herein with reference to drawings are explanatory, illustrative, and used to generally understand the present disclosure, and should not be construed to limit the present disclosure.

A split electric rice cooker1000according to embodiments of the present disclosure will be described in detail with reference toFIG. 1toFIG. 7.

As illustrated inFIG. 1, the split electric rice cooker1000according to embodiments of the present disclosure includes a base100, a cooker body200, a weighing device500and a press cover600. The base100is provided with a weighing-device mounting groove120at the bottom thereof, a limiting plate160is provided in the weighing-device mounting groove120(seeFIG. 5), the cooker body is apt to rest on the base100and is separable with respect to the base100, and the weighing device500is provided in the weighing-device mounting groove120.

The weighing device500includes a weighing sensor510and a support leg520connected with the weighing sensor510. The weighing sensor510is fixed in the weighing-device mounting groove120and includes a body portion511and a cantilever weighing portion512. The cantilever weighing portion512is provided to the body portion511, and the cantilever weighing portion512is located below the limiting plate160. The press cover600is provided at the bottom of the base100and shields the weighing-device mounting groove120, and the press cover600is provided with a press-cover clearance hole601for the support leg520to pass downwards. When the cantilever weighing portion512is bent upwards and deformed with respect to the body portion511, the limiting plate160is apt to abut against the cantilever weighing portion512to limit the position of the cantilever weighing portion512.

For the split electric rice cooker according to embodiments of the present disclosure, by providing the limiting plate160in the weighing-device mounting groove120, when the cooker body is overweight, the limiting plate160limits the position of the cantilever weighing portion512to prevent the cantilever weighing portion512from continuing to generate relative deformation with respect to the body portion511, so as to provide overload protection for the weighing sensor510and guarantee normal use of the weighing function.

It should be noted that only when the weight applied to the body portion511exceeds a tolerable range of the weighing sensor510, the limiting plate160abuts against a bottom surface of the body portion511; when the weighing sensor510is in normal use, the limiting plate160moves towards the body portion511and remains at a certain balanced position, in which case the limiting plate160is spaced apart from the bottom surface of the body portion511by a certain distance. Thus, the weighing sensor510can be prevented from failure due to overloading, while the normal use thereof can be ensured.

In the split electric rice cooker according to an embodiment of the present disclosure, a support plate and a vertical snapping plate140are provided in the weighing-device mounting groove120, and the weighing sensor510is sandwiched between the vertical snapping plate140and the support plate. Therefore, the weighing sensor510is fastened by the support plate and the vertical snapping plate140together provided in the weighing-device mounting groove120, such that not only the structure becomes simple and compact, but also the disassembly is convenient.

The vertical snapping plate140can fasten the weighing sensor510in a vertical direction, and the vertical snapping plate140and the support plate together can limit the weighing sensor510in a horizontal direction to prevent the weighing sensor510from rotating.

According to some embodiments of the present disclosure, the support plate includes a first support plate131, a second support plate132, a third support plate133, and a fourth support plate134. The first support plate131, the second support plate132, the third support plate133, and the fourth support plate134are provided to a first side wall121, a second side wall122, a third side wall123and a fourth side wall124of the weighing-device mounting groove120respectively, in which the first side wall121, the second side wall122, the third side wall123and the fourth side wall124are connected successively.

Specifically, the weighing-device mounting groove120exhibits a substantially square groove, the first side wall121and the third side wall123of the weighing-device mounting groove120are opposite, the second side wall122and the fourth side wall124thereof are opposite, and the first to fourth side walls are provided with the first to fourth support plates respectively. An upper surface of the weighing sensor510is opposite to respective lower surfaces of the first to fourth support plates, and a lower surface of the weighing sensor510abuts against a snap hook of the vertical snapping plate140, so as to limit the position of the weighing sensor510in the vertical direction; respective side surfaces of the first to fourth side walls abut against an outer edge of the weighing sensor510, so as to limit the position of the weighing sensor510in the horizontal direction.

Therefore, the horizontal limiting of the weighing sensor510is achieved through the first to fourth support plates, to effectively prevent horizontal rotation of the weighing sensor510, and enhance stability and reliability of the weighing sensor510fixed in the weighing-device mounting groove120.

According to some embodiments of the present disclosure, the weighing sensor510includes the body portion511and the cantilever weighing portion512. The body portion511is an annular frame body, and the cantilever weighing portion512is provided inside the body portion511. Specifically, as illustrated inFIG. 2, the cantilever weighing portion512is connected with a part of an inner edge of the body portion511, the support leg520is fixedly connected with a cantilever support portion, and the body portion511and the weighing-device mounting groove120are fixedly connected.

In this way, the support leg520of the base100is placed on the ground, and then the cooker body is placed on the base100; since the weight imposed on the body portion511increases (i.e. the added weight of the cooker body), the body portion511moves downwards under the action of weight increase and drives the cantilever weighing portion512to produce elastic deformation; the weighing sensor510sends a corresponding weighing signal based on the amount of elastic deformation and realizes measurement of the weight of the cooker body.

According to some embodiments of the present disclosure, the cantilever weighing portion512includes a first cantilever5121and a second cantilever5122. The first cantilever5121is T-shaped and includes a transverse section5121aand a longitudinal section5121b, the longitudinal section5121bis connected with the body portion511, and two ends of the transverse section5121aare separately provided with the second cantilever5122. Specifically, referring toFIG. 2, the longitudinal section5121bhas a first end connected with the body portion511and a second end connected with a middle portion of the transverse section5121a; two ends of the transverse section5121aare connected with two second cantilevers5122respectively; the second cantilever5122is provided with a mounting hole for fixed connection with the support leg520, and a screw530passes through the second cantilever5122and the support leg520to fix the support leg520on the cantilever weighing portion512.

Therefore, after the cooker body is placed on the base100, the body portion511moves downwards under the action of the gravity of the cooker body, and drives the longitudinal section5121bto move and produce elastic deformation with respect to the transverse section5121aand the second cantilever5122. The cantilever weighing portion512with the above structure can produce the elastic deformation easily and have high sensitivity of weight sensing, and the deformation of the cantilever weighing portion512is distributed more evenly, resulting in a more accurate detection result.

In some embodiments, the body portion511includes a first frame bar5111, a second frame bar5112, a third frame bar5113, and a fourth frame bar5114connected successively. The first frame bar5111is adjacent to the transverse section5121a. The first frame bar5111, the second frame bar5112, the third frame bar5113, and the fourth frame bar5114are apt to abut against the first support plate131, the second support plate132, the third support plate133, and the fourth support plate134respectively.

In a specific embodiment shown inFIG. 2, the first frame bar5111and the third frame bar5113are opposite, while the second frame bar5112and the fourth frame bar5114are opposite. An inner edge of the first frame bar5111is adjacent to the transverse section5121aof the cantilever weighing portion512, an inner edge of the third frame bar5113is connected with the longitudinal section5121bof the cantilever weighing portion512, an inner edge of the second frame bar5112is adjacent to one of the second cantilevers5122, and an inner edge of the fourth frame bar5114is adjacent to the other second cantilever5122.

Thus, the structure of the cantilever weighing portion512is more compact, which shortens the volume of the weighing sensor510, saves a mounting space of the weighing-device mounting groove120, and hence makes the structure of the split electric rice cooker more compact.

According to some embodiments of the present disclosure, the first support plate131has an inverted three-step structure, and the third support plate133has an inverted two-step structure. The first frame bar5111is apt to abut against a bottom surface of a second step of the first support plate131; the transverse section5121ais suspended below a bottom surface of a first step1311of the first support plate131; the first step1311of the first support plate131constitutes the limiting plate160; and the third frame bar5113is apt to abut against a bottom surface of a first step1331of the third support plate133.

Specifically, as illustrated inFIG. 2, a third step1313of the first support plate131is connected with the first side wall121of the weighing-device mounting groove120; the third step1313, the second step1312and the first step1311are arranged successively from outside to inside; and a clearance space is defined below the first step1311and at an inner side of the second step1312. A second step1332of the third support plate133is connected with the third side wall123of the weighing-device mounting groove120, and the second step1332and the first step1331are arranged successively from outside to inside.

Therefore, an upper surface of the first frame bar5111of the body portion511of the weighing sensor510abuts against the second step1312of the first support plate131, and an upper surface of the third frame bar5113of the body portion511abuts against the first step1331of the third support plate133; meanwhile, respective upper surfaces of the second frame bar5112and the fourth frame bar5114of the body portion511abut against the vertical snapping plate140, such that they cooperate with one another to realize vertical position-limiting of the weighing sensor510.

According to some embodiments of the present disclosure, the bottom surface of the second step1312of the first support plate131is flush with the bottom surface of the first step1331of the third support plate133. Thus, the body portion511of the weighing sensor510is in a horizontal state after assembled with various support plates and is subject to a more balanced force, and the support from the support leg520connected with the weighing sensor510is more stable.

CombiningFIG. 2andFIG. 4, the third step1313of the first support plate131and the second step1332of the third support plate133clamp and respectively abut against the first frame bar5111and the third frame bar5113, so as to limit the position of the body portion511in a direction parallel to the longitudinal section5121b. Specifically, the first frame bar5111and the third frame bar5113are opposite in a longitudinal direction, a side surface of the third step1313of the first support plate131abuts against an outer edge of the first frame bar5111, and a side surface of the second step1332of the third support plate133abuts against an outer edge of the third frame bar5113. Thus, the body portion511is limited in the longitudinal direction and prevented from shaking in the longitudinal direction.

Referring toFIG. 2, a bottom surface of the third step1313of the first support plate131and a bottom surface of the second step1332of the third support plate133are both configured as a guide bevel. Specifically, the guide bevel gradually extends outwards from up to down. Thus, the provision of the guide bevel facilitates the installation of the weighing sensor510and makes the installation more convenient.

Further, referring toFIGS. 3 and 4, the second support plate132and the fourth support plate134are respectively located outside the second cantilevers5122of the corresponding sides to evade the second cantilevers5122. Specifically, a clearance groove is defined between the outside of the second cantilever5122and the body portion511. Thus, the relative deformation between the cantilever weighing portion512and the body portion511is smooth and unimpeded, to avoid a phenomenon of jamming, thereby improving the operational stability and reliability of the split electric rice cooker.

According to some embodiments of the present disclosure, as shown inFIG. 2, a limiting protrusion135is provided on each of the second support plate132and the fourth support plate134, and the limiting protrusion135on the second support plate132and the limiting protrusion135on the fourth support plate134clamp and respectively abut against the second frame bar5112and the fourth frame bar5114, so as to limit the position of the body portion511in a direction parallel to the transverse section5121a.

Specifically, the second frame bar5112and the fourth frame bar5114are opposite in a transverse direction, the limiting protrusion135of the second support plate132abuts against an outer edge of the second frame bar5112, and the limiting protrusion135of the fourth support plate134abuts against an outer edge of the fourth frame bar5114, thereby achieving the position-limiting of the body portion511in the transverse direction.

In one embodiment, each of the second support plate132and the fourth support plate134is divided into two sections spaced apart from each other, and one vertical snapping plate140is disposed between the two sections. An inner side of the vertical snapping plate140may abut against or be spaced apart from the corresponding support plate. Thus, a snapping force and a clamping force distributed on the body portion511can be distributed more evenly, thereby avoiding concentrated distribution of stress on the body portion511.

In some embodiments, the bottom of the base100is further provided with an catching groove150, the press cover600is further provided with a pre-assembled catching portion602, and the pre-assembled catching portion602is engaged within the catching groove150. Referring toFIG. 2, the press cover600is in a substantially square shape, and two opposite edges of the press cover600are provided with the pre-assembled catching portions602. Correspondingly, the shape of the weighing-device mounting groove120is consistent with that of the press cover600. The catching groove150is located at an outer side of the weighing-device mounting groove120and in one-to-one correspondence to the pre-assembled catching portion602. During the assembly, the pre-assembled catching portion602of the press cover600is engaged in the catching groove150of the base100to implement the pre-assembly of the press cover600.

Certainly, the number of the pre-assembled catching portion602and the catching groove150is not limited to two illustrated inFIG. 2, but may be more than two.

In order to enhance the tightness and reliability of the connection between the press cover600and the base100, the press cover600can be fastened to the bottom of the base100through a press-cover threaded assembly703. Specifically, each of the other two opposite edges of the press cover600is provided with a mounting ear having a mounting hole, the base100has a threaded hole corresponding to the mounting hole, and a screw of the press-cover threaded assembly703passes through the mounting hole and is tightly fitted with the threaded hole to fasten the press cover600on the base100.

In a specific embodiment illustrated inFIG. 5, a distance between the cantilever weighing portion512and the limiting plate160is L, the deformation displacement of the cantilever weighing portion512with respect to the body portion511is associated with the weight to be weighed, and the deformation displacement of the cantilever weighing portion512is S when the weighing sensor510is in a maximum range, in which L≤S. Thus, it is possible to provide better overload protection for the weighing sensor510, to avoid the occurrence of the phenomenon that the weighing sensor510fails because of exceeding the range during operation.

In a specific embodiment illustrated inFIG. 1, the press cover600is provided with the press-cover clearance hole601for the support leg520to pass downwards.

Certainly, the present disclosure is not limited thereto, and the press cover600can be connected with the support leg520. For example, in a specific embodiment illustrated inFIG. 7, the press cover600and the support leg520are integrally formed, and the support leg520is supported on a bottom surface of the cantilever weighing portion512, and can be deformed along with the press cover600and push the cantilever weighing portion512upwards.

Thus, when the cooker body is mounted onto the base100, the weighing sensor510is deformed under the action of gravity of the cooker body, such that the base100is able to weigh the cooker body and hence judges whether the cooker body matches it based on a weighing result, thereby improving accuracy of matching the base100with the cooker body. Additionally, by sealing the weighing sensor510in the weighing-device mounting groove120through the press cover600, not only the weighing sensor510can be protected well, but also the split electric rice cooker has a more beautiful appearance.

According to some embodiments of the present disclosure, the press cover600is provided with a weakening structure. It could be understood that the weakening structure means weakening the rigidity of the press cover600to make the press cover600more easily deformed. Thus, when the cooker body is mounted on the base100, the press cover600having the weakening structure is more easily deformed and generates a larger amount of deformation. In such a way, the pushing force of the press cover600on the cantilever weighing portion512is greater, which improves the sensitivity of the weighing device510and the accuracy of the measurement result.

In a specific embodiment illustrated inFIG. 6, the weakening structure is a weakening groove603penetrating the press cover600. Thus, by providing the weakening groove603in the press cover600, it is possible to weaken the rigidity of the press cover600, save materials, and reduce costs.

In some embodiments, as illustrated inFIG. 7, the weighing sensor510is provided with a mounting hole5122a; an upper surface of the support leg520is fixed with a fixing column523; the fixing column523is provided through the mounting hole5122a, and an upper end of the fixing column523is formed with a diameter-enlarged portion5231; and a radial dimension of the diameter-enlarged portion5231is larger than a radial dimension of the mounting hole5122a, such that the weighing sensor510is clamped and fixed between the diameter-enlarged portion5231and the support leg520.

A split electric rice cooker according to embodiments of the present disclosure will be described in detail with reference toFIG. 8toFIG. 14.

As illustrated inFIG. 8, a weighing device500according to embodiments of the present disclosure includes a weighing sensor510, a support leg520and a limiting portion524. The weighing sensor510includes a body portion511and a cantilever weighing portion512, and the cantilever weighing portion512is provided to the body portion511. The support leg520is supported on a bottom surface of the cantilever weighing portion512and fixed with the cantilever weighing portion512. The limiting portion524is provided to the support leg520and located below the body portion511, and the limiting portion524is apt to move upwards along with the support leg520with respect to the body portion511so as to abut against a bottom surface of the body portion511.

For the weighing device500according to the embodiments of the present disclosure, the body portion511moves downwards with respect to the cantilever weighing portion512, the support leg520and the limiting portion524under the gravity of an object to be weighed, that is, the support leg520and the limiting portion524together move upwards with respect the body portion511. When the object to be weighed reaches a preset value, the limiting portion524abuts against the bottom surface of the body portion511, to prevent the cantilever weighing portion512of the weighing sensor510from being excessively deformed and thus from generating an unrecoverable plastic deformation. Therefore, it is possible to avoid the failure of the weighing sensor510due to overloading, and prolong the service life of the weighing sensor510.

It should be noted that only when the weight applied to the body portion511exceeds a tolerable range of the weighing sensor510, the limiting portion524abuts against the bottom surface of the body portion511; when the weighing sensor510is in normal use, the limiting portion524moves towards the body portion511and remains at a certain balanced position, in which case the limiting portion524is spaced apart from the bottom surface of the body portion511by a certain distance. Thus, it is possible to avoid the failure of the weighing sensor510due to overloading and at the same time guarantee the normal use of the weighing sensor510.

In a specific embodiment illustrated inFIG. 9, a distance between the limiting portion524and the body portion511is L, the deformation displacement of the cantilever weighing portion512with respect to the body portion511is associated with the weight to be weighed, and the deformation displacement of the cantilever weighing portion512is S when the weighing sensor510is in a maximum range, in which L≤S. That is, the maximum allowable deformation amount of the cantilever weighing portion512which guarantees the normal operation of the weighing sensor510is S, and in this embodiment the maximum deformation amount of the cantilever weighing portion512is L, such that the weighing sensor510can always be controlled within the working range.

In some embodiments, the body portion511is an annular frame body, and the cantilever weighing portion512is provided inside the body portion511. Specifically, as illustrated inFIG. 8, the cantilever weighing portion512is provided inside the body portion511and fixedly connected with an inner edge of the body portion511; the support leg520and the cantilever weighing portion512are opposite in an up-and-down direction and fixedly connected; the limiting portion524is connected to an outer side of the support leg520and is opposite to the body portion511in the up-and-down direction. Thus, the weighing sensor510occupies a smaller space and has a more compact structure.

Referring toFIG. 8, the cantilever weighing portion512includes a first cantilever5121and a second cantilever5122. The first cantilever5121is fixed with the body portion511, and the second cantilever5122is fixed with the first cantilever5121and is also fixed with the support leg520. Further, the second cantilever5122is separately located at two sides of the first cantilever5121. That is, two second cantilevers5122are provided, and the two second cantilevers5122are connected to two transverse sides of the first cantilever5121respectively. Thus, the cantilever weighing portion512is more evenly stressed, thereby avoiding being damaged by stress concentration.

Further, the first cantilevers5121at two sides of the second cantilever5122are arranged symmetrically, and the first cantilever5121is spaced apart from and arranged parallel to the second cantilever5122. Thus, the structure of the weighing sensor510is more compact.

In one embodiment, the first cantilever5121is T-shaped and includes a transverse section5121aand a longitudinal section5121b, and two ends of the transverse section5121aare separately provided with the second cantilever5122. Specifically, referring toFIG. 9, the longitudinal section5121bhas a first end connected with the body portion511and a second end connected with a middle portion of the transverse section5121a; two ends of the transverse section5121aare connected with two second cantilevers5122respectively. Thus, when the body portion511moves downwards under the action of the object to be weighed, the support leg520and the second cantilever5122are stationary, and hence relative displacement between the second cantilever5122and the body portion511is generated. In such a case, the longitudinal section5121bof the first cantilever5121generates elastic deformation under the action of the relative movement between the body portion511and the support leg520, whereby the weighing sensor510can measure the weight of the object based on the deformation amount.

Certainly, the present disclosure is not limited thereto, and the shape of the cantilever weighing portion512is not limited to the shape illustrated inFIG. 1, but can be U-shaped, T-shaped, V-shaped or the like. In one embodiment, the shape of the cantilever weighing portion512and the body portion511as needed.

Referring toFIG. 8, the support leg520includes a support-leg body521and a support block522provided to the support-leg body521, and the support block522is fixed with the second cantilever5122. Further, respective lower surfaces of the first cantilever5121and the second cantilever5122are flush with each other, and abut against an upper surface of the support block522. Thus, it is possible to ensure the tightness and stability of connection between the first cantilever5121and the support block522, and provide sufficient space for the deformation of the first cantilever5121.

In some embodiments, the second cantilever5122is provided with a mounting hole5122a; the weighing device500further includes a weighing-device threaded fastener530; and the weighing-device threaded fastener530is fixed by being threaded with the support block522after passing through the mounting hole5122afrom the top downwards. Thus, when the weighing sensor510goes wrong, it is more convenient to disassemble and repair.

As illustrated inFIG. 10, a distance between facing-away outer sides of the two second cantilevers5122is greater than or equal to a transverse length of the support block522. Thus, the body portion511is prevented from interfering with an edge of the support block522when the cantilever weighing portion512moves with respect to the body portion511during the weighing, and hence a phenomenon of jamming during the weighing is avoided, thereby enhancing the operational reliability and stability of the weighing device500.

In some embodiments, the limiting portion524is provided to an end face of each of two transverse ends of the support block522. Thus, better protection of the weighing sensor510can be achieved. Certainly, the present disclosure is not limited thereto, and for example, in some other embodiments, the limiting portion524can be provided to an end face of each of two longitudinal ends of the support block522.

A hollowed groove513is defined between the body portion511and the second cantilever5122, and an outer side surface of the limiting portion524is outside an outer edge of the hollowed groove513, as illustrated inFIG. 1. Thus, the cantilever weighing portion512adopting the above structure can produce the elastic deformation more easily and have high sensitivity of weight sensing, and the deformation of the cantilever weighing portion512is distributed more evenly, resulting in a more accurate detection result.

It could be understood that the weighing device500according to the embodiments of the present disclosure can be applied to the split electric rice cooker, and the weighing device500is provided to the base of the split electric rice cooker to measure the weight of the cooker body, thereby achieve proper match between the cooker body and the base.

A split electric rice cooker1000according to embodiments of the present disclosure includes the above weighing device500according to the above embodiments. The split electric rice cooker1000can avoid the failure of the weighing sensor510due to overloading and prolong the service life of the weighing sensor510, resulting in good product quality.

Referring toFIGS. 11 and 12, in some embodiments, the split electric rice cooker further includes a base100, a cooker body200, and a press cover600. The base100is provided with a weighing-device mounting groove120at the bottom thereof, and the weighing sensor510is fixed in the weighing-device mounting groove120. The cooker body200is apt to rest on the base100and is separable with respect to the base100. The press cover600is provided at the bottom of the base100and shields the weighing-device mounting groove120, and the press cover600is integrally provided with a support leg520. The support leg520is supported on a bottom surface of the cantilever weighing portion512, and can be deformed along with the press cover600and push the cantilever weighing portion512upwards.

Further referring toFIGS. 13 and 14, the limiting portion524is provided to the entirety formed by the press cover600and the support leg520, and the limiting portion524can be located on an upper surface of a bottom wall of the press cover. By configuring the press cover600and the support leg520into an integral structure, and enabling the support leg520under pressure to move upwards relative to the base100and hence push the cantilever weighing portion512to deform the cantilever weighing portion512, the weighing device510can obtain a corresponding weight change value based on the deformation amount of the cantilever weighing portion512, and in such a way, the weight measurement of the cooker body is implemented. Due to the integral structure of the press cover600and the support leg520, the assembly procedure is simplified, the production cost is saved, and the split electric rice cooker has a more compact structure and is more convenient to assemble.

According to some embodiments of the present disclosure, the press cover600is provided with a weakening structure. It could be understood that the weakening structure means weakening the rigidity of the press cover600to make the press cover600more easily deformed. Thus, when the cooker body is mounted on the base100, the press cover600having the weakening structure is more easily deformed and generates a larger amount of deformation. In such a way, the pushing force of the press cover600on the cantilever weighing portion512is greater, which improves the sensitivity of the weighing device510and the accuracy of the measurement result.

In a specific embodiment illustrated inFIG. 14, the weakening structure is a weakening groove603penetrating the press cover600. Thus, by providing the weakening groove603in the press cover600, it is possible to weaken the rigidity of the press cover600, save materials, and reduce costs.

Certainly, the present disclosure is not limited thereto, and the press cover600may not be connected with the support leg520. For example, in the specific embodiment illustrated inFIG. 1, the press cover600is provided with a press-cover clearance hole601for the support leg520to pass downwards.

Thus, when the cooker body is mounted on the base100, the weighing sensor510is deformed under the action of gravity of the cooker body, and the base100is able to weigh the cooker body and hence judges whether the cooker body matches it based on a weighing result, thereby improving accuracy of matching the base100with the cooker body. Additionally, by sealing the weighing sensor510in the weighing-device mounting groove120through the press cover600, not only the weighing sensor510can be protected better, but also the split electric rice cooker has a more beautiful appearance.

In some embodiments, as illustrated inFIG. 7, the weighing sensor510is provided with a mounting hole5122a; an upper surface of the support leg520is fixed with a fixing column524; the fixing column524is provided through the mounting hole5122a, and an upper end of the fixing column524is formed with a diameter-enlarged portion5231; and a radial dimension of the diameter-enlarged portion5231is larger than a radial dimension of the mounting hole5122a, such that the weighing sensor510is clamped and fixed between the diameter-enlarged portion5231and the support leg520.

In the specification, it is to be understood that terms such as “central,” “longitudinal,” “transverse,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise” “axially,” “radially,” and “circumferentially” should be construed to refer to the orientation as then described or as shown in the drawings under discussion. These relative terms are for convenience of description, and do not indicate or imply that the present disclosure have a particular orientation or be constructed or operated in a particular orientation, thus should not be construed to limit the present disclosure.