Sensor component, load cell assembly and electronic scale

Abstract

The present invention relates to the technical field of weighing devices, and discloses a sensor component, a weighing sensor assembly, and an electronic scale. The sensor component includes: a sensor body, on which mounting holes are formed on a bearing rod; a first connecting member, one end of which is a connecting portion disposed in the mounting hole, the other end is an abutting portion, and the middle portion is an extending portion. The weighing sensor assembly includes: the sensor component; a scale foot assembly, including a scale foot body; wherein the abutting portion abuts on the scale foot body, and the contact area between the abutting portion and the scale foot body does not exceed 15 mm<supgt;2< / supgt;. By changing the length of the extending portion in the first connecting member, the position of the abutting portion can be adjusted at low cost, providing relatively sufficient space for the user to design the overall structure of the electronic scale; through a specific contact mode between the abutting portion and the scale foot body, the weighing accuracy of the weighing sensor assembly can be improved when the ground is uneven.

Description

Technical Field

[0001] The present invention relates to the technical field of weighing devices, and specifically, to a sensor component, a load cell assembly, and an electronic scale. Background Art

[0002] In the prior art, a protruding contact is usually provided on the load bar of the load cell body as a component in contact with the scale foot pad to transmit pressure to the load bar, and a varying electrical signal is output by means of the deformation of the load bar to achieve weighing. However, the contact in this structural form is usually integrally structured with the load bar, or the contact is welded to the load bar, and the distance between the lower end of the contact and the load bar is relatively close, resulting in a small space around the contact when designing the structure of the electronic scale, making it difficult to arrange other structures.

[0003] In addition, the main factors affecting the accuracy of the electronic scale are the scale feet, the sensor pairing, and their combination method. In the prior art, the scale feet and the sensor are mostly combined together by hard contact methods such as hot melting or screwing. In actual use of the whole machine, if the ground is uneven, the force on the scale feet will not be vertical, and correspondingly, the load bar on the sensor will not be vertically stressed, thereby affecting the accuracy of the whole machine. There are also some electronic scales in which the scale feet are elastically connected to the outer shell of the whole machine, and the sensor abuts against the scale feet. When the ground is uneven, the scale feet will no longer be completely vertically stressed, and part of the pressure will be borne by the outer shell of the whole machine, resulting in a decrease in measurement accuracy.

[0004] In addition, in order to prevent deformation during use and affect the measurement accuracy, some electronic scales increase the thickness of the scale feet, resulting in a larger thickness of the whole machine, which affects the appearance and portability of the whole machine. Summary of the Invention

[0005] The present invention is made to solve the above technical problems. One of its purposes is to provide a sensor component that can increase the space around the contact on the sensor to facilitate the arrangement of other structures.

[0006] Another purpose of the present invention is to provide a load cell assembly that can improve the weighing accuracy in an environment where the ground is uneven.

[0007] Another purpose of the present invention is to provide a load cell assembly that can reduce the thickness of the whole machine.

[0008] According to an embodiment of the present invention, a sensor component is provided, including: a sensor body, on which a mounting hole is formed on the load bar; a first connecting member, one end of which is a connecting portion disposed in the mounting hole, the other end is an abutting portion, and the middle portion is an extending portion.

[0009] According to an embodiment of the present invention, a load cell assembly is provided, including: the sensor component as described above; a weighing foot assembly including a weighing foot body; wherein the abutting portion abuts against the weighing foot body, and the contact area between the abutting portion and the weighing foot body does not exceed 15 mm 2 。

[0010] As an embodiment, at least one of the two contact surfaces between the abutting portion and the weighing foot body is an arc surface.

[0011] As an embodiment, the weighing foot assembly further includes: a second connecting member, the upper end of which is connected to the bearing rod, and a first through hole for accommodating the extending portion is formed in the middle; an elastic member, one end of which is connected to the outer periphery of the second connecting member, and the other end of which is connected to the weighing foot body.

[0012] As an embodiment, the second connecting member is of a cylindrical structure, and a plurality of the elastic members are uniformly arranged on its outer periphery. A second through hole for accommodating the elastic member and the second connecting member is formed in the middle of the weighing foot body, and the outer end of the elastic member is fixedly connected to the inner wall of the second through hole.

[0013] As an embodiment, the weighing foot body, the second connecting member, and the elastic member are of an integral structure.

[0014] As an embodiment, a first clamping portion is provided on the outer periphery of the elastic member; a first limiting portion opposite to the first clamping portion is provided on the weighing foot body; wherein the first clamping portion and the first limiting portion are clamped together.

[0015] As an embodiment, the second connecting member is of a cylindrical structure, and a plurality of the elastic members are uniformly arranged on its outer periphery. An annular connecting ring is provided on the outer periphery of the elastic member, the outer end of the elastic member is fixedly connected to the inner wall of the connecting ring, and a plurality of the first clamping portions extending outward are formed on the outer periphery of the connecting ring.

[0016] As an embodiment, a second limiting portion is provided on the outer periphery of the elastic member; a second clamping portion opposite to the second limiting portion is provided on the weighing foot body; wherein the second clamping portion and the second limiting portion are clamped together.

[0017] As an embodiment, the second connecting member is of a cylindrical structure, and a plurality of the elastic members are uniformly arranged on its outer periphery. An annular connecting ring is provided on the outer periphery of the elastic member, the outer end of the elastic member is fixedly connected to the inner wall of the connecting ring, and a plurality of strip-shaped second limiting portions extending along the circumferential direction are formed on the outer periphery of the connecting ring.

[0018] As an embodiment, the upper end surface of the extending portion abuts against the bearing rod.

[0019] As an embodiment, a load-bearing piece is provided on the scale foot body, and the abutting portion abuts on the load-bearing piece.

[0020] As an embodiment, a clamping arm that is clamped together with the bearing rod is formed at the upper end of the second connecting piece.

[0021] According to an embodiment of the present invention, an electronic scale is provided, including: a scale plate, and a weighing sensor assembly as described above is provided at the lower end.

[0022] According to the above description and practice, the present invention has the following advantages compared with the prior art:

[0023] 1. In the present invention, an installation hole is provided on the bearing rod of the sensor component, and then a first connecting piece is detachably installed therein. The abutting portion at the lower end of the first connecting piece contacts other structures, for example, directly abuts on the scale foot to achieve pressure transmission. Since the first connecting piece has a simple structure and a small volume, its manufacturing cost is low. Therefore, when designing an electronic scale, the length of the extending portion in the first connecting piece can be changed according to actual needs to adjust the up and down position of the abutting portion. And in this process, it is not necessary to significantly change the structure of the sensor body, which has good versatility.

[0024] 2. The weighing sensor assembly in the present invention combines the above-mentioned sensor component with the scale foot assembly. While achieving weighing, it also has the advantages of the above-mentioned sensor component. After at least one of the two contact surfaces between the abutting portion and the scale foot body is set as an arc surface, the weighing accuracy can be improved in an environment where the ground is not level. In addition, in the scale foot assembly, the second connecting piece is connected to the scale foot body through an elastic member. The lower end of the first connecting piece passes through the second connecting piece and then abuts on the scale foot body, being restricted by the second connecting piece in the horizontal direction and restricted by the scale foot body in the vertical direction. During use, when the ground is uneven, even if the scale foot body is tilted, the first connecting piece can be kept in a vertical state or nearly vertical state by means of the elastic member, and finally the force on the bearing rod is closer to the vertical direction, which can improve the measurement accuracy.

[0025] 3. In the weighing sensor of the present invention, a load-bearing piece is provided in the scale foot body or the scale foot body is made of a metal piece that is not easily deformed, which can reduce the thickness of the scale foot body and thus reduce the overall thickness of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic exploded view of the sensor component related to the first embodiment of the present invention.

[0027] Figure 2 It is a schematic structural view of the sensor body in the sensor component related to the first embodiment of the present invention.

[0028] Figure 3 Schematic structural diagram of the first connecting member in the sensor component related to the first embodiment of the present invention.

[0029] Figure 4 Exploded structural diagram of the weighing sensor assembly related to the second embodiment of the present invention.

[0030] Figure 5a and Figure 5b Stereoscopic structural diagrams of the weighing foot assembly in the weighing sensor assembly related to the second embodiment of the present invention from two different perspectives.

[0031] Figure 6 Exploded structural diagram of the weighing sensor assembly related to the third embodiment of the present invention.

[0032] Figure 7 Exploded structural diagram of the weighing sensor assembly related to the fourth embodiment of the present invention.

[0033] Figure 8 Schematic structural diagram of the second connecting member, elastic member and connecting ring in the weighing sensor assembly related to the fourth embodiment of the present invention.

[0034] Figure 9 Schematic structural diagram of the weighing foot body in the weighing sensor assembly related to the fourth embodiment of the present invention.

[0035] Figure 10 Exploded structural diagram of the weighing sensor assembly related to the fifth embodiment of the present invention.

[0036] Figure 11 Schematic structural diagram of the second connecting member, elastic member and connecting ring in the weighing sensor assembly related to the fifth embodiment of the present invention.

[0037] Figure 12 Schematic structural diagram of the weighing foot body in the weighing sensor assembly related to the fifth embodiment of the present invention.

[0038] The reference numerals in the figure are:

[0039] 1, sensor body; 11, bearing rod

[0040] 12, fixing structure; 13, mounting hole

[0041] 2, first connecting member; 21, connecting portion

[0042] 22, extending portion; 23, abutting portion

[0043] 24, groove; 3, weighing foot assembly

[0044] 31, weighing foot body; 32, second connecting member

[0045] 33. Elastic member 34. Load-bearing piece

[0046] 35. Clamping arm 36. Protrusion

[0047] 37. Sealing plate 38. Connecting ring

[0048] 41. First through hole 42. Second through hole

[0049] 51. First clamping portion 52. Second clamping portion

[0050] 61. First limiting portion 62. Second limiting portion Detailed implementation mode

[0051] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more complete and comprehensive, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0052] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. It should be noted that in the present disclosure, the terms "comprising", "configured with", and "provided with" are used to mean an open inclusion, and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", etc. are only used as labels and are not limitations on the quantity or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention.

[0053] Unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Embodiment 1

[0055] In this embodiment, a sensor component is disclosed, please refer to Figures 1 to 3 The sensor assembly comprises a sensor body 1 and a first connector 2. The sensor body 1 comprises a support rod 11 in the center and a fully enclosed fixing structure 12 around the periphery. During operation, the sensing circuit is mounted on the support rod 11 and senses changes in the electrical signal caused by deformation of the support rod 11. The fully enclosed fixing structure 12 surrounds the support rod 11 and, when mounted on other structures, allows for more balanced forces on the support rod 11.

[0056] A mounting hole 13 is formed on the bearing rod 11. One end of the first connecting member 2 is a connecting portion 21 disposed in the mounting hole 13, the other end is a contact portion 23, and the middle portion is an extension portion 22. Figure 3 As shown, the upper portion of the first connector 2 is a connecting portion 21, which is provided with an external thread that mates with the internal thread in the mounting hole 13, allowing the first connector 2 to be fixedly mounted on the load-bearing rod 11. The lower end of the first connector 2 is an abutting portion 23, which, during use, abuts against another structure, such as a scale foot or the ground, thereby transmitting pressure to the load-bearing rod 11 through the first connector 2. In other embodiments, the first connector 2 and the mounting hole 13 may also be connected by means of snap-fitting, riveting, welding, or bonding, which can also achieve the connection between the first connector 2 and the sensor body 1.

[0057] Because the first connecting member 2 has a simple structure and a small size, its production cost is low. Therefore, when designing an electronic scale, the length of the extension portion 22 in the middle of the first connecting member 2 can be changed according to actual needs to adjust the vertical position of the abutment portion 23, making it easier to install other structural components around the periphery of the first connecting member 2. In this process, there is no need to significantly change the structure of the sensor body 1, which has good versatility.

[0058] In addition, in this embodiment, a recessed groove 24 is further provided on the abutting portion 23 , which facilitates the user to screw the first connecting member 2 into the mounting hole 13 with a screwdriver, thereby achieving a stable connection between the first connecting member 2 and the bearing rod 11 .

[0059] Example 2

[0060] In this embodiment, a weighing sensor assembly is disclosed. Figure 4 、 Figure 5a and Figure 5b The weighing sensor assembly includes the sensor component in embodiment 1 and a scale foot assembly 3.

[0061] The scale foot assembly 3 includes at least one scale foot body 31, which is placed directly on the ground when in use. The abutment portion 23 of the first connecting member 2 abuts against the scale foot body 31, and the contact area between the abutment portion 23 and the scale foot body 31 does not exceed 15mm. 2。In this structural form, the abutting portion 23 and the weighing foot body 31 are in point contact or approximately point contact.

[0062] When non-vertical forces occur when the weighing foot body 31 is placed on an uneven ground, if the weighing foot body 31 does not tilt, the first connecting member 2 and the bearing rod 11 still bear vertical pressure and will not affect the weighing accuracy; if the weighing foot body 31 tilts to a certain extent, compared with the structure where the weighing foot and the sensor are combined by hard contact methods such as hot melting or screwing, no obvious bending moment will be generated on the first connecting member 2 in the present invention, nor will it tilt to the same extent as the weighing foot body 31, which can reduce the non-vertical deformation of the bearing rod 11 and can also improve the weighing accuracy to a certain extent.

[0063] As an embodiment, at least one of the two contact surfaces between the abutting portion 23 and the weighing foot body 31 is an arc surface. In this structural form, the two form point contact, and the above-mentioned technical effect of improving the weighing accuracy can be achieved during actual weighing. As Figure 4 shown, in this embodiment, the lower end of the abutting portion 23 is arc-shaped and abuts against a plane on the weighing foot assembly 3. In other embodiments, an arc surface opposite to the abutting portion 23 can also be provided on the weighing foot assembly 3. Correspondingly, the lower end of the abutting portion 23 is provided as a plane, and the above-mentioned point contact effect can also be achieved.

[0064] As an embodiment, it is also possible to form a surface contact with a relatively small area between the abutting portion 23 and the weighing foot body 31. For example, the area of the contact surface does not exceed 15 mm 2 . When the ground is uneven, it will not cause obvious non-vertical deformation to the bearing rod 11, ensuring that the weighing sensor assembly has good weighing accuracy.

[0065] As an embodiment, the weighing foot assembly 3 further includes a second connecting member 32 and an elastic member 33. As Figure 4 shown, the upper end of the second connecting member 32 is connected to the bearing rod 11, a first through hole 41 for accommodating the extending portion 22 is formed in the middle, one end of the elastic member 33 is connected to the outer periphery of the second connecting member 32, and the other end of the elastic member 33 is connected to the weighing foot body 31. The lower end of the first connecting member 2 passes through the second connecting member 32 and abuts against the weighing foot body 31. It is restricted by the second connecting member 32 in the horizontal direction and restricted by the weighing foot body 31 in the vertical direction. During use, when the ground is uneven, even if the weighing foot body 31 tilts, the elastic member 33 can be used to make the first connecting member 2 in a vertical state or nearly vertical state, and finally make the force on the bearing rod 11 closer to the vertical direction, which can further improve the measurement accuracy.

[0066] Please combine Figure 5a and Figure 5b, the second connecting member 32 is a cylindrical structure sleeved on the outer periphery of the extension portion 22, and a plurality of curved elastic members 33 are uniformly arranged on its outer periphery. A second through hole 42 for accommodating the elastic member 33 and the second connecting member 32 is formed in the middle of the weighing foot body 31, and the outer ends of the elastic members 33 are fixedly connected to the inner wall of the second through hole 42. In this structural form, most of the structures of the first connecting member 2, the second connecting member 32 and the elastic member 33 can be arranged in the middle part of the weighing foot body 31. For the entire weighing sensor assembly, while realizing the above function of improving the weighing accuracy, the vertical dimension will not be significantly increased. The elastic member 33 with a curved structure can obtain a large elasticity in a small space, and the weighing foot body 31 does not need to be set with a large size in the radial direction.

[0067] Furthermore, as an implementation manner, the weighing foot body 31, the second connecting member 32 and the elastic member 33 are of an integral structure. For example, an integral molding processing method is adopted, which is convenient for mass production of the weighing foot assembly 3 at a low cost.

[0068] Furthermore, as an implementation manner, a load-bearing piece 34 is fixedly arranged in the second through hole 42 in the middle of the weighing foot body 31. For example, the load-bearing piece 34 is bonded in the second through hole 42. By arranging the load-bearing piece 34, the stiffness of the weighing foot body 31 along the vertical direction can be improved, and it is not easy to deform along the vertical direction during weighing measurement, which can also improve the weighing accuracy to a certain extent. And, in order to achieve the required stiffness, compared with the weighing foot body 31 without the load-bearing piece 34, the weighing foot body 31 in the present invention can significantly reduce the vertical thickness. In addition, the weighing foot body 31 can also be directly made of a metal part or a plastic part that is not easy to deform, which can also reduce the thickness to a certain extent.

[0069] As an implementation manner, a clamping arm 35 is formed at the upper end of the second connecting member 32. After aligning with the lower end of the bearing rod 11 and moving the second connecting member 32 upward, the clamping arm 35 can be clamped on the bearing rod 11, which can indirectly prevent the weighing foot body 31 from rotating greatly and has a certain limiting effect on the weighing foot body 31. Compared with the weighing foot body 31 being fixedly installed on the outer shell or other structures of the electronic scale, the weighing foot body 31 in the present invention is indirectly connected to the bearing rod 11, and at the same time, there is a degree of freedom of movement between the two, which can form a certain limiting effect on the weighing foot body 31 without affecting the weighing accuracy.

[0070] As an implementation manner, the diameter of the extension portion 22 on the first connecting member 2 is larger than the inner diameter of the mounting hole 13, and the upper end surface of the extension portion 22 abuts against the lower end surface of the bearing rod 11. During weighing measurement, after the first connecting member 2 is pressed, the upper end of the extension portion 22 tightly abuts against the bearing rod 11, which can improve the connection stability between the first connecting member 2 and the bearing rod 11, avoid loosening between the two, and can keep the weighing sensor assembly at a high weighing accuracy.

[0071] Example 3

[0072] In this embodiment, another weighing sensor assembly is disclosed. Please refer to Figure 6 , this weighing sensor assembly also includes the sensor component in Example 1 and a foot component 3. The main difference from the weighing sensor assembly in Example 2 is that in this embodiment, the lower end surface of the first connecting member 2 is a flat surface, and at the same time, an arc-shaped protrusion 36 is provided at the upper end of the load-bearing piece 34 opposite to the first connecting member 2 in the foot body 31. When each structure is assembled together, the protrusion 36 abuts against the lower end surface of the first connecting member 2, and a point contact along the vertical direction between the first connecting member 2 and the foot body 31 can be formed, ensuring that the weighing sensor assembly has a high weighing accuracy.

[0073] As an implementation manner, the cross-section of the abutting portion 23 is a polygon shape, which is convenient for the user to screw the first connecting member 2 into the mounting hole 13, improving the convenience of assembly.

[0074] As an implementation manner, a sealing plate 37 is also provided in the second through hole 42 of the foot body 31. After the load-bearing piece 34 is fixed in the second through hole 42, the sealing plate 37 is stuck or glued in the second through hole 42, which can make the lower end of the foot body 31 form a flat end surface, and can also improve the weighing accuracy to a certain extent.

[0075] Others such as the foot body 31, the sensor component, the elastic member 33, etc. are the same as those in Example 2, and the specific structures will not be elaborated here.

[0076] Example 4

[0077] In this embodiment, yet another weighing sensor assembly is disclosed. Please refer to Figure 7 , Figure 8 and Figure 9 , this weighing sensor assembly also includes the sensor component in Example 1 and a foot component 3. The main difference from the weighing sensor assembly in Example 2 lies in the specific structural form of the foot component 3.

[0078] Specifically, in this embodiment, the foot component 3 includes a second connecting member 32, an elastic member 33, a foot body 31, and a load-bearing piece 34. A first clamping portion 51 is provided on the outer periphery of the elastic member 33, and a first limiting portion 61 opposite to the first clamping portion 51 is provided on the foot body 31, and the first clamping portion 51 and the first limiting portion 61 are clamped together. In this foot component 3, the foot body 31 and other structures are of a split structure. When designing the entire electronic scale, the user can design the foot body 31 with a corresponding shape according to the actual appearance requirements, without having to consider more the influence on other structures in the foot component 3. <Object:000]]

[0079] As an embodiment, the second connecting member 32 is a cylindrical structure sleeved on the outer periphery of the extending portion 22. A plurality of curved elastic members 33 are evenly arranged on its outer periphery. The outer periphery of the elastic member 33 is an annular connecting ring 38. The outer ends of the elastic members 33 are fixedly connected to the inner wall of the connecting ring 38. A plurality of first clamping portions 51 extending outward are formed on the outer periphery of the connecting ring 38. A first limiting portion 61 opposite to the first clamping portion 51 is provided on the weighing foot body 31. As Figure 8 and Figure 9 shown, the first clamping portion 51 is a plate-like structure extending radially outward, and the first limiting portion 61 is a bent structure with one end extending radially inward, and its cross-section is an inverted L shape. After the connecting ring 38 and the weighing foot body 31 are aligned together, by rotating the connecting ring 38 or the weighing foot body 31, the first clamping portion 51 can be clamped in the first limiting portion 61 to realize the connection between the weighing foot body 31, the connecting ring 38, the elastic member 33 and the second connecting member 32.

[0080] The thicknesses of the various components in the weighing foot assembly 3 of this structural form are relatively small, which is convenient for processing and manufacturing. For example, the overall thickness of the connecting ring 38, the elastic member 33, and the second connecting member 32 is reduced compared with that in the second embodiment, which is more conducive to integral molding operations. At the same time, the weighing foot assembly 3 adopts a snap-fit split structure, which is also more convenient for assembling the first connecting member 2 and the load-bearing piece 34. When assembling the entire weighing sensor assembly, only need to first clamp the second connecting member 32 on the bearing rod 11, then pass the upper end of the first connecting member 2 through the first through hole 41 and install it in the installation hole 13, then install the load-bearing piece 34 on the weighing foot body 31, and then perform snap connection with the connecting ring 38 to complete the assembly.

[0081] Other components such as the sensor component, the first connecting member 2, the load-bearing piece 34, etc. are the same as those in the second embodiment, and the specific structures will not be elaborated here.

[0082] Embodiment Five

[0083] Another weighing sensor assembly is disclosed in this embodiment. Please refer to Figures 10 to 12 , this weighing sensor assembly also includes the sensor component in the first embodiment and a weighing foot assembly 3. The main difference from the weighing sensor assembly in the fourth embodiment lies in the specific structural form of the weighing foot assembly 3.

[0084] Specifically, in this embodiment, the weighing foot assembly 3 includes a second connecting member 32, an elastic member 33, and a weighing foot body 31. A second limiting portion 62 is provided on the outer periphery of the elastic member 33, and a second engaging portion 52 opposite to the second limiting portion 62 is provided on the weighing foot body 31, wherein the second engaging portion 52 is engaged with the second limiting portion 62. In this weighing foot assembly 3, the weighing foot body 31 and other structures are of a split structure. When designing the entire electronic scale, users can design the weighing foot body 31 with a corresponding shape according to the actual appearance requirements, without having to consider more the influence on other structures in the weighing foot assembly 3.

[0085] As an embodiment, the second connecting member 32 is a cylindrical structure sleeved on the outer periphery of the extending portion 22. A plurality of curved elastic members 33 are uniformly provided on its outer periphery. The outer periphery of the elastic member 33 is an annular connecting ring 38, and the outer ends of the elastic members 33 are fixedly connected to the inner wall of the connecting ring 38. A plurality of second limiting portions 62 are formed on the connecting ring 38, and a second engaging portion 52 opposite to the second limiting portion 62 is provided on the weighing foot body 31.

[0086] As Figure 11 and Figure 12 shown, the second limiting portion 62 is a strip hole arranged in a ring shape, with the width of one end greater than that of the other end. The second engaging portion 52 is a bent structure extending radially outward at one end, and its cross section is an inverted L shape. During assembly, insert the second engaging portion 52 into the wider end of the second limiting portion 62, and then rotate the connecting ring 38 or the weighing foot body 31 to engage the second engaging portion 52 in the second limiting portion 62, realizing the connection between the weighing foot body 31 and the connecting ring 38, the elastic member 33, and the second connecting member 32.

[0087] The thickness of each component in the weighing foot assembly 3 of this structural form is small, which is convenient for processing and manufacturing. For example, the overall thickness of the connecting ring 38, the elastic member 33, and the second connecting member 32 is reduced compared with that in the second embodiment, which is more conducive to integral molding operations. At the same time, this weighing foot assembly 3 adopts a snap-fit split structure, which is also more convenient for assembling the first connecting member 2. When assembling the entire weighing sensor assembly, only need to first snap the second connecting member 32 on the bearing rod 11, then pass the upper end of the first connecting member 2 through the first through hole 41 and install it in the mounting hole 13, and then snap the weighing foot body 31 with the connecting ring 38 to complete the assembly.

[0088] As an embodiment, in this embodiment, the weighing foot body 31 is made of a material with relatively high rigidity, such as metal or plastic, and it is not easy to deform during use. Therefore, in this embodiment, the structure of the load-bearing piece 34 is omitted.

[0089] Other components such as the sensor component, the first connecting member 2, and the load-bearing piece 34 are the same as those in the fourth embodiment, and the specific structures will not be elaborated here.

[0090] Example Six

[0091] In this embodiment, an electronic scale is disclosed, which includes a weighing plate for a user to place an item to be weighed. At the lower end of the weighing plate, there is a weighing sensor assembly as described in any one of Embodiments Two to Five above.

[0092] Specifically, the number of weighing sensor assemblies on the weighing plate can be adjusted according to actual needs. For example, when the electronic scale is relatively small, only one weighing sensor assembly can be provided at the central part. When the volume of the electronic scale gradually increases, two or more weighing sensor assemblies can be provided. For another example, on an electronic scale for measuring body weight, four weighing sensor assemblies are evenly arranged, and the body weight can be measured more accurately.

[0093] Furthermore, a through hole for the exposed weighing foot body 31 is provided at the lower end of the weighing plate, and the fixing structure 12 in the sensor component is fixedly installed on the weighing plate. During use, even if the weighing plate or the housing of the electronic scale is deformed, generating a non-vertical acting force on part of the weighing foot body 31, it is possible to reduce the influence on the first connecting member 2 and the load-bearing rod 11 based on the special structure of the above-mentioned weighing sensor assembly, especially the setting of the elastic member 33 and the contact connection mode between the first connecting member 2 and the weighing foot body 31, ensuring that the electronic scale has better weighing accuracy.

[0094] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A sensor component, characterized in that, Comprising: A sensor body, on which a mounting hole is formed on a bearing rod; A first connecting member, one end of which is a connecting portion disposed in the mounting hole, the other end is an abutting portion, and the middle portion is an extending portion; the diameter of the extending portion is greater than the inner diameter of the mounting hole, and the upper end surface of the extending portion abuts against the bearing rod.

2. A load cell assembly, characterized in that, Comprising: The sensor component according to claim 1; The weighing foot assembly includes a weighing foot body; wherein the abutting portion abuts against the weighing foot body, and the contact area between the abutting portion and the weighing foot body does not exceed 15 mm 2 .

3. The weighing sensor assembly according to claim 2, wherein At least one of the two contact surfaces between the abutting portion and the scale foot body is an arc surface.

4. The weighing sensor assembly according to claim 2, wherein, The scale foot assembly further comprises: A second connecting member, the upper end of which is connected to the bearing rod, and a first through hole for accommodating the extending portion is formed in the middle portion; An elastic member, one end of which is connected to the outer periphery of the second connecting member, and the other end is connected to the scale foot body.

5. The weighing sensor assembly according to claim 4, wherein The second connecting member is of a cylindrical structure, and a plurality of the elastic members are uniformly arranged on its outer periphery. A second through hole for accommodating the elastic member and the second connecting member is formed in the middle of the scale foot body, and the outer end of the elastic member is fixedly connected to the inner wall of the second through hole.

6. The weighing sensor assembly according to claim 4, wherein The scale foot body, the second connecting member, and the elastic member are of an integral structure.

7. The weighing sensor assembly according to claim 4, wherein A first clamping portion is provided on the outer periphery of the elastic member; A first limiting portion opposite to the first clamping portion is provided on the scale foot body; wherein The first clamping portion and the first limiting portion are clamped together.

8. The weighing sensor assembly according to claim 7, wherein The second connecting member is of a cylindrical structure, and a plurality of the elastic members are uniformly arranged on its outer periphery. An annular connecting ring is provided on the outer periphery of the elastic member, the outer end of the elastic member is fixedly connected to the inner wall of the connecting ring, and a plurality of the first clamping portions extending outward are formed on the outer periphery of the connecting ring.

9. The weighing sensor assembly according to claim 4, wherein A second limiting portion is provided on the outer periphery of the elastic member; A second clamping portion opposite to the second limiting portion is provided on the scale foot body; wherein The second clamping portion and the second limiting portion are clamped together.

10. The weighing sensor assembly according to claim 9, wherein The second connecting member is of a cylindrical structure, and a plurality of the elastic members are uniformly arranged on its outer periphery. An annular connecting ring is provided on the outer periphery of the elastic member, the outer end of the elastic member is fixedly connected to the inner wall of the connecting ring, and a plurality of strip-shaped second limiting portions are formed on the outer periphery of the connecting ring along the circumferential direction.

11. The weighing sensor assembly according to any one of claims 2 to 8, wherein A load-bearing piece is provided on the scale foot body, and the abutting portion abuts against the load-bearing piece.

12. The weighing sensor assembly according to any one of claims 4 to 10, wherein A clamping arm for clamping with the bearing rod is formed at the upper end of the second connecting member.

13. An electronic scale, characterized in that, Comprising: A scale plate, at the lower end of which is provided the weighing sensor assembly according to any one of claims 2 to 12.

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