A weighing sensor

Abstract

The utility model provides a weighing sensor, which includes a weighing end, a quadrilateral fixed end, a sensor elastic body and a strain assembly. The deformable beams at both ends of the sensor elastic body and the quadrilateral fixed end are integrally formed. A load-bearing hole is provided in the middle of the sensor elastic body, which is threadedly connected to the weighing end. The weighing end is used to place the weighed object, and the strain assembly is glued and fixed on the sensor elastic body. The utility model can provide a good force structure solution for the weighing sensor, thereby solving the problem of increasing the weighing effect in existing products / technologies, and the product structure is simpler, the space utilization rate is improved, and the stability and accuracy of the weighing sensor are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and in particular relates to a weighing sensor. Background Art

[0002] Traditional weighing sensors are mainly composed of a load-bearing body, an elastic body, and a resistance strain gauge set on the elastic body. When the weighing object applies pressure to the elastic body, the elastic body is deformed by the external force, causing the resistance strain gauge attached to the elastic body to deform at the same time, and the resistance change of the resistance strain gauge is converted into a processable digital signal output.

[0003] At present, the common cantilever beam weighing sensor is mainly composed of a spring, a cantilever beam and a resistance strain gauge. One end of the cantilever beam is a quadrilateral fixed end, and the other end is a load-bearing end. Due to the requirement of the resistance strain gauge for deformation recognition, the cantilever beam must be long enough, which requires sufficient installation space, and the quadrilateral fixed end of the cantilever beam is easily lifted, affecting the accuracy of weight measurement. However, traditional weighing sensors have some problems in long-term use, such as insufficient accuracy, poor stability, and susceptibility to interference from environmental factors. In addition, some sensors have complex structures and high installation and maintenance costs, which limit their wide application. Utility Model Content

[0004] The main purpose of the utility model is to provide a weighing sensor, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a weighing sensor, including a weighing end, a quadrilateral fixed end, a sensor elastomer and a strain assembly, characterized in that: the sensor elastomer and the bottom beam of the quadrilateral fixed end are integrally formed and connected, a load-bearing hole is provided between the sensor elastomer and the deformation beams at both ends, the load-bearing hole and the weighing end are threadedly connected, and the strain assembly is glued and fixed on the weighing sensor.

[0006] Preferably, the sensor elastic body may be provided with two deformation beams connected to the bottom beam of the quadrilateral fixed end.

[0007] Preferably, the strain assembly includes: a resistance strain gauge, a measuring circuit, and a data conductor.

[0008] Preferably, resistance strain gauges are glued and fixed to the centers of the deformation beams at both ends of the sensor elastic body.

[0009] Preferably, the quadrilateral fixing end is provided with no less than four fixing holes, which are respectively arranged on the four sides of the quadrilateral fixing end.

[0010] Preferably, the quadrilateral fixing end can be configured as a polygon.

[0011] Preferably, the sensor elastomer is less than or equal to the thickness of the quadrilateral fixed end.

[0012] The positive and progressive effects of the utility model are:

[0013] The utility model comprises a weighing end, a quadrilateral fixed end, a sensor elastic body and a strain assembly. The quadrilateral fixed end is fixedly arranged around the sensor elastic body to form a flat weighing sensor, which changes the force structure and changes the sensor elastic body from being subjected to force only by bending to being subjected to force uniformly on all sides. The product structure is also simpler and thinner, thereby improving space utilization and improving the stability and accuracy of the weighing sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structure diagram of the weighing sensor of the utility model;

[0015] Figure 2 It is a top view of the cross-section of the weighing sensor of the utility model;

[0016] Figure 3 This is the structural diagram of the weighing end of the weighing sensor of the utility model

[0017] Figure 4 This is the structure diagram of the strain assembly of the weighing sensor of the utility model

[0018] [Reference Signs]

[0019] Weighing end 1

[0020] Load bearing hole 11

[0021] Quadrilateral fixed end 2

[0022] Bottom beam 21

[0023] Sensor elastic body 3

[0024] Deformation beam 31

[0025] Fixing hole 4

[0026] Strain Components 5

[0027] Resistance strain gauge 51

[0028] Measuring circuit 52

[0029] Data cable 53 DETAILED DESCRIPTION

[0030] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They 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 orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. At the same time, when an element is referred to as "fixed on" or "provided on" another element, it can be directly on the other element or there may be a central element at the same time. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be a central element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolting, or gluing. In short, for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Example 1

[0034] like Figure 1-4 As shown, a weighing sensor comprises a weighing end 1, a quadrilateral fixed end 2, a sensor elastic body 3 and a strain assembly 5, characterized in that: the sensor elastic body 3 and the bottom beam 21 of the quadrilateral fixed end 2 are integrally connected, a bearing hole 11 is provided between the sensor elastic body 3 and the deformation beams 31 at both ends, the bearing hole 11 is threadedly connected to the weighing end 1, and the strain assembly 5 is glued and fixed on the sensor elastic body 3. When the weighing object is placed on the weighing end 1, the deformation beams 31 at both ends of the sensor elastic body 3 are stressed to form a downward bend deformation, the quadrilateral fixed end 2 provides a firm and stable fixed support for the sensor elastic body 3, and the deformation of the resistance stress sheet 51 is converted into a digital signal that can be processed.

[0035] The sensor elastic body 3 may be provided with two deformation beams 31 connected to the bottom beam 21 of the quadrilateral fixed end 2. The deformation beams 31 are deformed and subjected to force more evenly.

[0036] The strain assembly 5 includes a resistance strain gauge 51, a measuring circuit 52, and a data conductor 53. The resistance strain gauge 51 is deformed and converted into a processable digital signal, which is then transmitted through the data conductor.

[0037] The center of the deformation beams 31 at both ends of the sensor elastic body 3 is fixed with a resistance strain gauge 51, so that the resistance strain gauge 51 can more accurately identify the deformation of the sensor elastic body 3.

[0038] The quadrilateral fixed end 2 is provided with no less than four fixing holes 4, which are respectively arranged on the four sides of the quadrilateral fixed end 2. This makes the installation of the weighing sensor more stable and provides a more solid support for the sensor elastic body.

[0039] The quadrilateral fixing end 2 can be set to a polygonal shape to adapt to a better installation environment.

[0040] The sensor elastic body 3 is less than or equal to the thickness of the quadrilateral fixed end 2, so as to adapt to a better installation base and installation environment.

[0041] The working principle of the utility model is: it includes a weighing end 1, a quadrilateral fixed end 2, a sensor elastic body 3 and a strain assembly 5. The quadrilateral fixed end 2 is fixedly arranged around the sensor elastic body 3, which changes the force structure. The sensor elastic body 3 is changed from only bending force to a flat weighing sensor to uniform force on all sides. The product structure is also simpler and thinner, which improves space utilization and improves the stability and accuracy of the weighing sensor.

[0042] Although the embodiments of the present invention have been shown and described, it is understandable to those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that these changes and modifications shall fall within the scope of protection of the present invention.

Claims

1. A weighing sensor, comprising a weighing end (1), a quadrilateral fixed end (2), a sensor elastic body (3) and a strain assembly (5), characterized in that: The sensor elastic body (3) and the bottom beam (21) of the quadrilateral fixed end (2) are integrally formed and connected, a load-bearing hole (11) is provided between the sensor elastic body (3) and the deformation beams (31) at both ends, the load-bearing hole (11) and the weighing end (1) are threadedly connected, and the strain assembly (5) is glued and fixed on the sensor elastic body (3).

2. A weighing sensor according to claim 1, characterized in that: The sensor elastic body (3) may be provided with two deformation beams (31) connected to the bottom beam (21) of the quadrilateral fixed end (2).

3. A weighing sensor according to claim 1, characterized in that: The strain component (5) comprises: a resistance strain gauge (51), a measuring circuit (52), and a data conductor (53).

4. A weighing sensor according to claim 1 or 3, characterized in that: Resistance strain gauges (51) are glued and fixed to the centers of the deformation beams (31) at both ends of the sensor elastic body (3).

5. A weighing sensor according to claim 1, characterized in that: The quadrilateral fixing end (2) is provided with no less than four fixing holes (4), which are respectively arranged on the four sides of the quadrilateral fixing end (2).

6. A weighing sensor according to claim 5, characterized in that: The quadrilateral fixing end (2) may be configured as a polygon.

7. A weighing sensor according to claim 2 or 6, characterized in that: The sensor elastic body (3) is less than or equal to the thickness of the quadrilateral fixed end (2).

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