A two-dimensional force sensor
By employing first and second detection arms in the force sensor to detect forces in the horizontal and vertical directions, and utilizing bosses and gel protection structures, the problem of only being able to measure forces in a single direction in the prior art is solved, thus achieving accurate measurement and extended lifespan of the two-dimensional force sensor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI YUNSHUNHE TECHNOLOGY CO LTD
- Filing Date
- 2025-10-24
- Publication Date
- 2026-07-24
AI Technical Summary
Existing force sensors can only detect force in a single direction and cannot simultaneously measure force in different directions.
The device employs first and second detection arms to detect forces in the horizontal and vertical directions, respectively. Force changes are detected through strain gauges, and bosses prevent direct contact interference. Combined with a gel and end cap protection structure, the device improves detection accuracy and lifespan.
It enables accurate measurement of forces in different directions at the measuring point, improving detection accuracy and service life, and reducing interference.
Smart Images
Figure CN224552591U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sensor technology, and in particular to a two-dimensional force sensor. Background Technology
[0002] A force sensor is a device used to measure the magnitude of force, and it is widely used in industrial automation, robotics, medical devices, automotive, aerospace, and other fields. Force sensors typically use strain gauges or piezoresistive elements to measure the strain after a force is applied. When a force is applied, the strain gauge or piezoresistive element deforms, resulting in a change in resistance. The magnitude of the force is calculated by measuring the change in resistance.
[0003] Conventional force sensors can only detect the magnitude of force in a single direction. With the development of industrial automation, it is necessary to measure forces in different directions simultaneously. Utility Model Content
[0004] To enable the measurement of forces in different directions at a force measuring point, this application provides a two-dimensional force sensor.
[0005] This application provides a two-dimensional force sensor, which adopts the following technical solution: A two-dimensional force sensor, comprising: A first detection arm, wherein a first detection hole is provided through the first detection arm, and first strain sections are symmetrically arranged on both sides of the first detection hole; The second detection arm has one end fixedly connected to the first detection arm. A second detection hole is provided through the second detection arm, and second strain sections are symmetrically arranged on both sides of the second detection hole.
[0006] By adopting the above technical solution, the first and second detection arms are mounted on the mounting surface. When the force measuring point is subjected to a vertical force, the vertical force is applied to the second strain gauge via the second detection arm, thus detecting the vertical force at the force measuring point. When the force measuring point is subjected to a horizontal force, the horizontal force is transmitted to the first detection arm via the second detection arm, causing the first strain gauge to deform under the horizontal force, thus detecting the horizontal force at the force measuring point. Through the operation of the two-dimensional force sensor, the measurement of forces at the force measuring point in different directions is achieved.
[0007] Optionally, the detection direction of the first strain section is perpendicular to the detection direction of the second strain section.
[0008] By adopting the above technical solution, the first strain unit detects the horizontal force and the second strain unit detects the vertical force, thereby realizing the measurement of the vertical and horizontal forces at the force measuring point.
[0009] Optionally, a first boss is fixedly installed on one side of the first detection arm.
[0010] By adopting the above technical solution, the first boss abuts against the mounting surface, preventing the first detection arm from directly abutting against the mounting surface, avoiding interference to the first strain unit during the detection process, and improving the detection accuracy of a two-dimensional force sensor.
[0011] Optionally, a second boss is fixedly installed on one side of the second detection arm.
[0012] By adopting the above technical solution, the second detection arm is prevented from directly contacting the mounting surface, and the second strain unit is prevented from being interfered with during the detection process, thereby improving the detection accuracy of a two-dimensional force sensor.
[0013] Optionally, both the first boss and the second boss are provided with mounting holes; The second detection arm has a mounting hole at the end away from the first detection arm.
[0014] By adopting the above technical solution, it is convenient to install a two-dimensional force sensor at different angles, thereby improving the adaptability of the two-dimensional force sensor.
[0015] Optionally, a measurement circuit is fixedly installed on both the first detection arm and the second detection arm; The two measurement circuits are electrically connected to the first strain gauge and the second strain gauge, respectively. The two measurement circuits are used to measure the deformation of the first strain section and the deformation of the second strain section, respectively.
[0016] By adopting the above technical solution, the measurement circuit measures the deformation of the first strain section and the deformation of the second strain section, thereby improving the measurement accuracy and real-time performance.
[0017] Optionally, both of the measurement circuits are electrically connected to an output module, which is fixedly mounted on the first detection arm.
[0018] By adopting the above technical solution, the output module outputs the measured structure.
[0019] Optionally, the axis of the first detection hole is parallel to the axis of the second detection hole.
[0020] By adopting the above technical solution, the measurement stability of a two-dimensional force sensor is improved, and measurement errors in a two-dimensional force sensor are avoided.
[0021] Optionally, the first detection arm and the second detection arm are integrally formed.
[0022] By adopting the above technical solution, the structural strength of a two-dimensional force sensor is improved.
[0023] Optionally, both ends of the first detection hole and both ends of the second detection hole are covered with end caps; Both the first and second detection wells are filled with gel.
[0024] By adopting the above technical solution, the gel protects the measurement circuit, the first strain section, and the second strain section, preventing dust and moisture from damaging the two-dimensional force sensor. At the same time, the end cap protects the gel, preventing dust from entering the gel and improving the service life of the two-dimensional force sensor.
[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The first and second detection arms are mounted on the mounting surface. When the force measuring point is subjected to a vertical force, the vertical force is applied to the second strain gauge via the second detection arm, thus detecting the vertical force at the force measuring point. When the force measuring point is subjected to a horizontal force, the horizontal force is transmitted to the first detection arm via the second detection arm, causing the first strain gauge to deform under the horizontal force, thus detecting the horizontal force at the force measuring point. By operating a two-dimensional force sensor, the force at the force measuring point can be measured in different directions. 2. The first boss abuts against the mounting surface to prevent the first detection arm from directly abutting against the mounting surface, thus avoiding interference to the first strain unit during the detection process and improving the detection accuracy of the two-dimensional force sensor. The second boss abuts against the mounting surface to prevent the second detection arm from directly abutting against the mounting surface, thus avoiding interference to the second strain unit during the detection process and improving the detection accuracy of the two-dimensional force sensor. 3. The gel protects the measurement circuit, the first strain gauge, and the second strain gauge, preventing dust and moisture from damaging the two-dimensional force sensor. At the same time, the end cap protects the gel, preventing dust from entering the gel and improving the service life of the two-dimensional force sensor. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application; Figure 2 This is a structural diagram used to show the mounting holes; Figure 3 This is a structural diagram used to illustrate the second boss; Figure 4 This is a structural cross-sectional view used to illustrate Embodiment 1; Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this application.
[0027] Explanation of reference numerals in the attached figures: 1. First detection arm; 11. First detection hole; 12. First strain gauge; 13. First boss; 2. Second detection arm; 21. Second detection hole; 22. Second strain gauge; 23. Second boss; 3. Mounting holes; 4. Output module; 5. End caps. Detailed Implementation
[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0032] This application discloses a two-dimensional force sensor. Example 1:
[0033] Reference Figures 1-4 This embodiment uses wired output module 4 as an example for illustration. A two-dimensional force sensor includes a first detection arm 1 and a second detection arm 2. A first detection hole 11 is formed through the first detection arm 1, and first strain sections 12 are symmetrically arranged on both sides of the first detection hole 11. A first boss 13 is fixedly installed on one side of the first detection arm 1, and a mounting hole 3 is formed on the first boss 13, which abuts against the mounting surface.
[0034] Reference Figures 1-4 The second detection arm 2 is fixedly connected to the first detection arm 1 at one end. The first detection arm 1 and the second detection arm 2 are integrally formed, with an included angle of 90° between them. A mounting hole 3 is provided at the end of the second detection arm 2 away from the first detection arm 1. A second detection hole 21 is provided through the second detection arm 2. The axis of the first detection hole 11 is parallel to the axis of the second detection hole 21. Second strain sections 22 are symmetrically arranged on both sides of the second detection hole 21. The detection direction of the first strain section 12 is perpendicular to the detection direction of the second strain section 22. The first strain section 12 is used to detect horizontal force, and the second strain section 22 is used to detect vertical force. A second boss 23 is fixedly installed on one side of the second detection arm 2, and a mounting hole 3 is provided on the second boss 23. End caps 5 are provided at both ends of the first detection hole 11 and the second detection hole 21. Both the first detection hole 11 and the second detection hole 21 are filled with gel.
[0035] Reference Figures 1-4 Measurement circuits are fixedly installed on both the first detection arm 1 and the second detection arm 2. The two measurement circuits are electrically connected to the first strain section 12 and the second strain section 22, respectively. The two measurement circuits are used to measure the strain of the first strain section 12 and the strain of the second strain section 22, respectively.
[0036] Reference Figures 1-4 Both measurement circuits are electrically connected to output modules 4, which are fixedly mounted on the first detection arm 1. The output module 4 outputs via a wired connection, with one end of the wire electrically connected to the measurement circuit and the other end electrically connected to the processor.
[0037] The implementation principle of a two-dimensional force sensor in this application embodiment is as follows: the first detection arm 1 and the second detection arm 2 are respectively fixedly installed on the mounting surface through the mounting hole 3. The first boss 13 abuts against the mounting surface. When the force measuring point is subjected to a vertical force, the vertical force is applied to the second strain section 22 through the second detection arm 2. The end of the second detection arm 2 close to the second boss 23 is the force receiving point, and the end of the second detection arm 2 away from the second boss 23 is the fixed point. The measurement circuit measures the strain of the second strain section 22 and transmits the measurement result to the processor through the output module 4 wire, thereby realizing the detection of the vertical force at the force measuring point.
[0038] When the force measuring point is subjected to a horizontal force, the horizontal force is transmitted to the first detection arm 1 through the second detection arm 2. The first strain gauge 12 deforms under the horizontal force, and the measurement circuit measures the strain of the first strain gauge 12. The end of the first detection arm 1 closest to the first protrusion 13 is the fixed point, and the end of the first detection arm 1 furthest from the first protrusion 13 is the force-bearing point. The measurement result is transmitted to the processor through the output module 4 wires, realizing the detection of the horizontal force at the force measuring point. By operating the two-dimensional force sensor, the measurement of forces in different directions at the force measuring point can be achieved.
[0039] By improving the stability of the measurement results output through the wired output method of output module 4, the accuracy of the measurement results of a two-dimensional force sensor is improved. Example 2:
[0040] Reference Figure 5 This embodiment uses output module 4 as an example of wireless output for illustration. The difference between this embodiment and embodiment 1 is that the output module 4 outputs wirelessly and is electrically connected to a storage module, which is used to store measurement circuit data.
[0041] After the measurement circuit measures the strain of the first strain section 12 and the strain of the second strain section 22, it stores the measurement results in the storage module through the output module 4, thereby realizing the detection of forces in different directions at the force measurement point.
[0042] The wireless output method of output module 4 reduces the installation volume of a two-dimensional force sensor, improves its installation adaptability, and avoids the data cable being touched when using wired output, thus avoiding affecting data transmission and measurement results.
[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A two-dimensional force sensor, characterized in that, include: A first detection arm (1) is provided with a first detection hole (11) through it, and first strain sections (12) are symmetrically arranged on both sides of the first detection hole (11). The second detection arm (2) is fixedly connected to the first detection arm (1) at one end. The second detection arm (2) has a second detection hole (21) through it. The second detection hole (21) has second strain sections (22) symmetrically arranged on both sides of the second detection hole (21).
2. The two-dimensional force sensor according to claim 1, characterized in that, The detection direction of the first strain unit (12) is perpendicular to the detection direction of the second strain unit (22).
3. The two-dimensional force sensor according to claim 1, characterized in that, A first boss (13) is fixedly installed on one side of the first detection arm (1).
4. The two-dimensional force sensor according to claim 3, characterized in that, A second boss (23) is fixedly installed on one side of the second detection arm (2).
5. The two-dimensional force sensor according to claim 4, characterized in that, Both the first boss (13) and the second boss (23) are provided with mounting holes (3); The second detection arm (2) has a mounting hole (3) at the end away from the first detection arm (1).
6. The two-dimensional force sensor according to claim 1, characterized in that, Measurement circuits are fixedly installed on both the first detection arm (1) and the second detection arm (2); The two measurement circuits are electrically connected to the first strain unit (12) and the second strain unit (22), respectively. The two measurement circuits are used to measure the deformation of the first strain section (12) and the deformation of the second strain section (22), respectively.
7. The two-dimensional force sensor according to claim 6, characterized in that, Both of the measurement circuits are electrically connected to an output module (4), which is fixedly mounted on the first detection arm (1).
8. The two-dimensional force sensor according to claim 1, characterized in that, The axis of the first detection hole (11) is parallel to the axis of the second detection hole (21).
9. The two-dimensional force sensor according to claim 1, characterized in that, The first detection arm (1) and the second detection arm (2) are integrally formed.
10. The two-dimensional force sensor according to claim 1, characterized in that, Both ends of the first detection hole (11) and both ends of the second detection hole (21) are covered with end caps (5); Both the first detection well (11) and the second detection well (21) are filled with gel.