Weighing sensor assembly and electronic scale

Abstract

The utility model relates to the technical field of weighing equipment, in particular to a weighing sensor assembly and an electronic scale, the weighing sensor assembly comprises an elastic piece and a sensor body, the elastic piece comprises an elastic body and a connecting part, the connecting part is arranged on the elastic body in a protruding manner, and an accommodating cavity is formed between the elastic body and the connecting part. The sensor body is provided with the bearing rod, the bearing rod extends into the containing cavity and abuts against the connecting part, the containing cavity provides certain supporting force for the bearing rod while containing the bearing rod, the bearing rod extends into the containing cavity, and connection between the sensor body and the elastic piece can be completed without an additional connecting structure. According to the weighing sensor assembly, the internal structure of the weighing sensor assembly is reduced, the difficulty of connection between the sensor body and the elastic piece is simplified, the yield of the weighing sensor assembly is improved, and the application scene of the weighing sensor with the elastic piece is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing equipment, in particular to a weighing sensor component and an electronic scale. Background Art

[0002] To ensure accurate mass measurement on unstable surfaces, existing weighing scales often incorporate elastic structures. For example, CN118913418A provides a weighing sensor that connects the sensor to an elastic structure via a fixing structure such as bolts or clips to improve the weighing accuracy of the electronic scale.

[0003] In order to ensure a stable connection between the sensor and the elastic structure, screws or rivets are often required. However, screw connection requires additional drilling, and the screws are small and difficult to operate, resulting in low production efficiency. Rivet connection is suitable for scales with small measuring ranges. Scales with larger measuring ranges require multiple hot-melt connections to rivet the elastic structure together, which has a certain impact on the product yield. Utility Model Content

[0004] The present invention is made to solve the above technical problems, and its purpose is to provide a weighing sensor assembly, which simplifies the installation structure of the sensor and the elastic structure, making it applicable to electronic scales of various sizes.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a weighing sensor assembly, including an elastic member, including an elastic body and a connecting portion, the connecting portion protruding from the elastic body, and a accommodating cavity formed between the elastic body and the connecting portion; the sensor body has a bearing rod, the bearing rod extends into the accommodating cavity and abuts against the connecting portion.

[0006] Preferably, it also includes a connecting member connected to the sensor body and the elastic member; a connecting hole is provided on the bearing rod, and a mounting hole is provided on the elastic body, and the connecting member is fixedly connected to the sensor body and the elastic member through the connecting hole and the mounting hole.

[0007] Preferably, the connecting member includes a contact portion and an abutting portion respectively arranged at both ends and an extension portion in the middle, wherein the extension portion passes through the mounting hole, the contact portion is arranged in the connecting hole, and the upper end of the extension portion abuts against the bearing rod.

[0008] Preferably, the lower end of the abutting portion is an arc-shaped surface.

[0009] Preferably, the connecting part includes a first plate and a second plate, the first plate is perpendicular to the elastic body and the second plate, the elastic body, the first plate and the second plate together form the accommodating cavity, and the upper end of the contact part abuts against the lower end of the second plate.

[0010] Preferably, a foot pad is further included, which is arranged on a side of the elastic body away from the connecting portion.

[0011] Preferably, it further comprises a load-bearing sheet, which is arranged between the foot pad and the elastic member and abuts against the connecting member.

[0012] Preferably, at least one of the two contact surfaces between the load-bearing plate and the connecting member is an arc-shaped surface.

[0013] Preferably, a first groove and a second groove are provided on a side of the elastic body away from the connecting portion, the load-bearing plate is installed in the second groove, and the foot pad is partially accommodated in the first groove.

[0014] The utility model provides an electronic scale, comprising a scale plate, the lower end of which is provided with a weighing sensor assembly as described in any one of the above items.

[0015] The utility model provides a weighing sensor assembly, comprising an elastic member and a sensor body, wherein the elastic member comprises an elastic body and a connecting portion, wherein the connecting portion protrudes from the elastic body, and an accommodating cavity is formed between the elastic body and the connecting portion. The sensor body comprises a load-bearing rod, which extends into the accommodating cavity and abuts against the connecting portion. The accommodating cavity not only accommodates the load-bearing rod but also provides a certain supporting force for the load-bearing rod. By extending the load-bearing rod into the accommodating cavity, the connection between the sensor body and the elastic member can be completed without the need for an additional connecting structure, thereby reducing the internal structure of the weighing sensor assembly, simplifying the difficulty of connecting the sensor body and the elastic member, improving the yield rate of the weighing sensor assembly, and expanding the applicable scenarios of the weighing sensor with the elastic member. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of a weighing sensor assembly involved in one embodiment of the present utility model.

[0017] Figure 2 It is a cross-sectional view of a weighing sensor assembly involved in one embodiment of the present utility model.

[0018] Figure 3 The figure is a schematic structural diagram of an elastic member of a weighing sensor assembly involved in one embodiment of the present utility model.

[0019] Figure 4 The figure is a schematic structural diagram of a connecting piece of a weighing sensor assembly involved in one embodiment of the present utility model. DETAILED DESCRIPTION

[0020] The exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many 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 thorough and complete and will fully convey the concepts of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0021] 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 figures represent the same or similar parts, and their repeated description will be omitted. It should be noted that in the present disclosure, the terms "including", "configured with", and "set on" are used to express open-ended inclusion and mean that in addition to the listed elements / components / etc., there may be additional elements / components / etc.; the terms "first", "second", etc. are used only as labels and are not intended to limit the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention.

[0022] Unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0023] This utility model discloses a weighing sensor assembly, please refer to Figures 1 to 4In some embodiments, the weighing sensor assembly includes an elastic member 1 and a sensor body 2. The elastic member 1 includes an elastic body 11 and a connecting portion 12. The connecting portion 12 protrudes from the elastic body 11, and a receiving cavity 13 is formed between the elastic body 11 and the connecting portion 12. The sensor body 2 has a load-bearing rod 21. The load-bearing rod 21 extends into the receiving cavity 13 and abuts against the connecting portion 12. The receiving cavity 13 not only accommodates the load-bearing rod 21 but also provides a certain supporting force for the load-bearing rod 21. By extending the load-bearing rod 21 into the receiving cavity 13, the connection between the sensor body 2 and the elastic member 1 can be completed without an additional connecting structure, thereby reducing the internal structure of the weighing sensor assembly, simplifying the difficulty of connecting the sensor body 2 and the elastic member 1, improving the yield rate of the weighing sensor assembly, and expanding the applicable scenarios of the weighing sensor with the elastic member 1.

[0024] In some embodiments, the weighing sensor assembly further includes a connecting member 3 connected to the sensor body 2 and the elastic member 1, further fixing the sensor body 2 and the elastic member 1 together, so that when the weighing sensor assembly needs to be weighed on an unstable surface, the elastic member 1 can still be adjusted so that the force acting on the load-bearing rod 21 can still be close to the vertical direction, thereby ensuring the measurement accuracy of the weighing sensor assembly. The load-bearing rod 21 is provided with a connecting hole 22, and the elastic body 11 is provided with a mounting hole 14. The connecting member 3 passes through the connecting hole 22 and the mounting hole 14 and is fixedly connected to the sensor body 2 and the elastic member 1, further fixing the elastic member 1 and the sensor body 2, to prevent the load-bearing rod 21 from escaping from the accommodating cavity 13 when the weighing sensor assembly needs to be moved multiple times, thereby affecting the measurement accuracy of the entire weighing sensor assembly. Moreover, since the connecting member 3 does not require additional structures, such as threads, snaps, etc., when connecting the sensor body 2 and the elastic member 1, during installation, it is only necessary to install the connecting member 3 at a specific position to achieve the connection between the sensor body 2 and the elastic member 1. No more operations such as thermoplasticization or additional tightening are required, making the weighing sensor assembly more suitable for electronic scales that are larger or undersized.

[0025] It can be understood that in order to ensure that the sensor body 2 and the elastic member 1 are stably fixed, the structure of the connecting member 3 also needs to be able to be simultaneously connected to the sensor body 2 and the elastic member 1. In some embodiments, the connecting member 3 includes a contact portion 31 and an abutting portion 32 at both ends and an extension portion in the middle, wherein the extension portion passes through the mounting hole 14, and the contact portion 31 is passed through the connecting hole 22, connecting the sensor body 2 and the elastic member 1 at the same time, and the upper end of the extension portion abuts against the bearing rod 21, providing a certain support for the sensor body 2 in the accommodating cavity 13, ensuring the connection between the sensor body 2 and the elastic member 1, and thereby ensuring the measurement accuracy of the entire weighing sensor assembly.

[0026] Furthermore, in some embodiments, the lower end of the abutment portion 32 is an arcuate surface. In actual use, the lower end of the abutment portion 32 can directly serve as a scale foot to abut against a flat surface. In this case, if the surface is uneven, compared to a structure in which the lower end of the abutment portion 32 is flat, any cut surface on the bottom arcuate surface of the connector 3 can contact the uneven surface, so that the connector 3 as a whole will not generate a large bending moment, thereby reducing the deformation of the load-bearing rod 21 in non-vertical directions and improving the measurement accuracy of the weighing sensor assembly to a certain extent.

[0027] In some embodiments, the connecting portion 12 includes a first plate 15 and a second plate 16, wherein the first plate 15 is perpendicular to the elastic body 11 and the second plate 16. The connecting member 3 is arranged parallel to the first plate 15 during installation, ensuring that the current sensed by the sensor body 2 during measurement is relatively stable and average, thereby avoiding unnecessary measurement errors due to force problems on the sensor body 2. The elastic body 11, the first plate 15, and the second plate 16 together form a receiving cavity 13, and the upper end of the contact portion 31 abuts the lower end of the second plate 16. At this time, after the connecting member 3 passes through the mounting hole 14 and the connecting hole 22, it abuts the second plate 16, further stabilizing the connection and positional relationship between the connecting member 3, the elastic member 1, and the sensor body 2, thereby avoiding the generation of measurement errors due to an unstable connection between the sensor body 2 and the elastic member 1.

[0028] It is understood that in some embodiments, the weighing sensor assembly further includes a foot pad 4, which is disposed on a side of the elastic body 11 away from the connecting portion 12, and the foot pad 4 generally directly contacts the plane. When the weighing sensor assembly is used for measurement, on the one hand, the foot pad 4 can increase friction with the measuring plane and absorb some vibration, thereby reducing the movement of the weighing sensor assembly and helping to improve the accuracy of the measurement. On the other hand, if the plane is uneven, the foot pad 4 can be used to adjust the height to accommodate slight height differences between different planes, thereby ensuring the accuracy of the weighing sensor assembly. The material of the foot pad 4 can be silicone, rubber, plastic, or cork, etc. The corresponding foot pad can be selected according to the actual measured object and the size of the electronic scale to ensure the accuracy of the measurement.

[0029] In order to ensure the measurement stiffness of the entire weighing sensor assembly, in some embodiments, the weighing sensor assembly also includes a load-bearing plate, which is arranged between the foot pad 4 and the elastic member 1 and abuts against the connecting member 3. On the one hand, it can improve the vertical stiffness of the weighing sensor, and avoid vertical deformation of the sensor body 2, the elastic member 1 and the connecting member 3 under the action of gravity during weighing measurement, thereby affecting the weighing accuracy; on the other hand, the load-bearing plate can disperse the weight of the measured item more evenly and transfer it to the sensor body 2, reducing the measurement error caused by uneven weight distribution.

[0030] It can be understood that in order to further improve the measurement accuracy of the weighing sensor assembly, in some embodiments, at least one of the two contact surfaces of the load-bearing plate and the connecting member 3 is a curved surface. If the ground is uneven, compared with the load-bearing plate and the connecting member 3 being flat against the ground, a large bending moment will not be generated on the connecting member 3, which can avoid the non-vertical deformation of the load-bearing rod 21 to a certain extent, thereby improving the weighing accuracy.

[0031] In some embodiments, a first groove 17 and a second groove 18 are provided on the side of the elastic body 11 away from the connecting portion 12, the first groove 17 is connected to the second groove 18, the load-bearing plate is installed in the second groove 18, and the foot pad 4 is partially accommodated in the first groove 17, wherein part of the foot pad 4 is protruding from the elastic body 11. On the one hand, when it contacts an uneven surface, the height can be adjusted through the foot pad 4 to adapt to the slight height difference between different planes and ensure the accuracy of the weighing sensor assembly; on the other hand, the protruding foot pad 4 usually has a large friction force, which generates a large friction force between the plane, avoiding relative movement between the weighing sensor assembly and the plane during use, thereby affecting the normal use of the weighing sensor assembly. The utility model discloses an electronic scale, including a scale plate, on which the user can place items to be weighed. A weighing sensor assembly such as any of the above is provided at the lower end of the scale plate.

[0032] Specifically, the number of load cell assemblies on the scale deck can be adjusted based on actual needs. For example, if the electronic scale is small, only one load cell assembly can be installed in the center. As the scale size increases, two or more load cell assemblies can be installed. For another example, evenly spaced four load cell assemblies on an electronic scale used for weight measurement can achieve more accurate weight measurements.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A weighing sensor assembly, characterized in that: include: The elastic member includes an elastic body and a connecting portion, wherein the connecting portion is protruding from the elastic body, and an accommodating cavity is formed between the elastic body and the connecting portion; The sensor body has a bearing rod, which extends into the accommodating cavity and abuts against the connecting portion.

2. The weighing sensor assembly according to claim 1, wherein: Also includes: a connecting member connected to the sensor body and the elastic member; The bearing rod is provided with a connecting hole, the elastic body is provided with a mounting hole, and the connecting member passes through the connecting hole and the mounting hole and is fixedly connected to the sensor body and the elastic member.

3. The weighing sensor assembly according to claim 2, wherein: The connecting member includes a contact portion and an abutting portion respectively arranged at both ends and an extension portion in the middle, wherein the extension portion passes through the mounting hole, the contact portion is arranged in the connecting hole, and the upper end of the extension portion abuts against the bearing rod.

4. The weighing sensor assembly according to claim 3, wherein: The lower end of the abutting portion is an arc-shaped surface.

5. The weighing sensor assembly according to claim 3, wherein: The connecting portion includes a first plate and a second plate, the first plate is perpendicular to the elastic body and the second plate, the elastic body, the first plate and the second plate together form the accommodating cavity, and the upper end of the contact portion abuts against the lower end of the second plate.

6. The weighing sensor assembly according to claim 2, wherein: Also includes: The foot pad is arranged on a side of the elastic body away from the connecting portion.

7. The weighing sensor assembly according to claim 6, wherein: Also includes: The load-bearing piece is arranged between the foot pad and the elastic member and abuts against the connecting member.

8. The weighing sensor assembly according to claim 7, wherein: At least one of the two contact surfaces of the load-bearing sheet and the connecting member is an arc-shaped surface.

9. The weighing sensor assembly according to claim 8, wherein: A first groove and a second groove are provided on a side of the elastic body away from the connecting portion. The load-bearing plate is installed in the second groove, and the foot pad is partially accommodated in the first groove.

10. An electronic scale, characterized in that: include: The weighing plate has a weighing sensor assembly as described in any one of claims 1 to 9 provided at its lower end.

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