Connecting structure for six-dimensional force sensor

Abstract

A connecting structure for a six-dimensional force sensor relates to the technical field of sensor connecting structures and comprises a shell, a circuit board is fixed in the shell through a fixing structure, a strain gauge connecting section is arranged on the circuit board, a strain gauge wire welding spot section is arranged on the strain gauge connecting section, and a sensor outgoing line lead welding spot section is further arranged on the circuit board. And the circuit board is provided with a printed wire for connecting the strain gauge wire welding spot section with the sensor outgoing line lead welding spot section. The six-dimensional force sensor solves the problems that when a six-dimensional force sensor in the prior art is assembled and welded, strain gauges in a plurality of directions in the six-dimensional force sensor need to be connected to the outside of a shell through wires, and due to the fact that the number of the strain gauges is large, the number of connecting points is large, the wires are messy, and the wire connecting sequence is prone to being disordered.

Description

Technical Field

[0001] This utility model relates to the field of sensor connection structure technology, specifically to a connection structure for a six-dimensional force sensor. Background Technology

[0002] Strain gauge six-dimensional force sensors provide rich force information, capable of detecting six-dimensional forces (Fx, Fy, Fz, Mx, My, Mz), that is, sensors that detect force information (three force components and three torque components) in three-dimensional space (Cartesian coordinate system). The products are suitable for applications such as robot manufacturing, automated equipment, intelligent control equipment, intelligent machines, material testing equipment, material stress state analysis, and stress analysis of component operation processes. Industries covered include robotics, automotive manufacturing, automated assembly lines, biomechanics, aerospace, and light textile industries. A core research issue for strain gauge six-dimensional force sensors is the design of the sensor's elastic body; the structure of the elastic body determines the sensor's range, sensitivity, and dynamic performance.

[0003] A prior art patent with publication number CN202720078U discloses a solution including an elastomer, a cable connector, and a cable signal line. The elastomer comprises a sensor bracket, a loading platform located in the middle of the bracket, and a cross beam located inside the bracket and connecting the loading platform and the sensor bracket. The cross beam and the sensor bracket are integrally formed, with a groove transition structure between them. Compared with the prior art, the advantages of this utility model are: firstly, the six-dimensional force sensor has a simple structure and is easy to manufacture; secondly, because the cross beam and the outer bracket of the six-dimensional force sensor are integrally manufactured and use a groove transition structure, force decoupling can be achieved structurally, reducing crosstalk between dimensions; and thirdly, the patch structure is reasonably selected, resulting in high sensor output accuracy.

[0004] The shortcomings of existing technology have gradually become apparent with use, mainly in the following aspects:

[0005] First, during the assembly and welding of traditional six-dimensional force sensors, strain gauges in several directions inside need to be connected to the outside of the outer shell using wires. Due to the large number of strain gauges and connection points, not only are the numerous wires messy, but the connection sequence is also prone to being disordered.

[0006] Secondly, many existing strain gauges are prone to detachment during installation due to limitations in their fixing structure, making it impossible to guarantee the stability of the fixation.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a connection structure for a six-dimensional force sensor. This structure solves the problem that in traditional six-dimensional force sensors, during assembly and welding, the strain gauges in several directions inside the sensor need to be connected to the outside of the outer casing using wires. Due to the large number of strain gauges and connection points, not only are the numerous wires messy, but the connection sequence is also prone to being disordered.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A connection structure for a six-dimensional force sensor includes a housing. Inside the housing, a circuit board is fixed by a fixing structure. The circuit board has a strain gauge connection section, and the strain gauge connection section has a strain gauge wire solder joint section. The circuit board also has a sensor output lead solder joint section. The circuit board has printed wires that connect the strain gauge wire solder joint section and the sensor output lead solder joint section.

[0011] As an optimized solution, the fixing structure includes a fixing hole at the center of the circuit board, a screw is inserted into the fixing hole, and the end of the screw is threaded to the housing.

[0012] As an optimized solution, each strain gauge connection section is provided with a sensor deformation beam outlet clearance hole.

[0013] As an optimized solution, the strain gauge wire welding points are arranged in two parallel rows, located on both sides of the sensor deformation beam wire exit clearance hole.

[0014] As an optimized solution, four strain gauge connection segments are arranged around the center of the circuit board.

[0015] As an optimized solution, the sensor deformation beam's wire-avoidance hole is rectangular.

[0016] As an optimized solution, the center of the circuit board is arranged in a circular shape.

[0017] As an optimized solution, the strain gauge connection section is rectangular and located on the outer ring of the circuit board.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] By integrating several messy wires in traditional technology onto a circuit board, operators only need to solder the strain gauge pins to the strain gauge wire solder joints when assembling the strain gauge of the six-dimensional force sensor. This is convenient and quick. Then, the lead wires are connected to the lead wires of the sensor to achieve the lead-out. This overcomes the problem of the traditional technology of connecting the internal strain gauges in several directions to the outside of the shell with wires, which can easily lead to the wiring sequence being confused.

[0020] The strain gauges are soldered onto the circuit board, which is detachably connected to the housing via a fixing structure. This improves the stability of the strain gauge fixing and facilitates assembly and use.

[0021] The layout is clear and the solder joints are neat, which effectively reduces the error rate of employees' operation and improves production efficiency. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the circuit board structure of this utility model.

[0025] In the diagram: 1-Strain gauge wire solder joint section; 2-Fixing hole; 3-Sensor deformation beam lead wire clearance hole; 4-Sensor lead wire solder joint section; 5-Outer shell. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0027] like Figure 1 and Figure 2 As shown, the connection structure for the six-dimensional force sensor includes a housing 5. Inside the housing 5, a circuit board is fixed by a fixing structure. The circuit board is provided with a strain gauge connection section, and a strain gauge wire solder joint section 1 is provided on the strain gauge connection section. The circuit board is also provided with a sensor output lead solder joint section 4. The circuit board is provided with printed wires that connect the strain gauge wire solder joint section 1 and the sensor output lead solder joint section 4.

[0028] The routing and wiring of printed conductors are common in daily life and are not innovative in this solution, so they will not be elaborated on here.

[0029] The fixing structure includes a fixing hole 2 located at the center of the circuit board, a screw inserted into the fixing hole 2, and the end of the screw being threaded to the outer casing 5.

[0030] Each strain gauge connection section is equipped with a sensor deformation beam outlet clearance hole 3.

[0031] Two strain gauge wire solder joints 1 are arranged side by side, located on both sides of the sensor deformation beam wire exit clearance hole 3.

[0032] Four strain gauge connection sections are arranged around the center of the circuit board.

[0033] The sensor deformation beam cable exit hole 3 is rectangular.

[0034] The center of the circuit board is arranged in a circle.

[0035] The strain gauge connection section is rectangular and located on the outer ring of the circuit board.

[0036] The working principle of this device is as follows:

[0037] By integrating several messy wires in the traditional technology onto the circuit board, the operator only needs to solder the strain gauge pins to the strain gauge wire solder joint segment 1 when assembling the strain gauge of the six-dimensional force sensor. This is convenient and quick. Then, the lead wires are connected to the sensor output lead solder joint segment 4 to achieve the lead-out. This overcomes the problem of the traditional technology of connecting the internal strain gauges in several directions to the outside of the outer shell 5 with wires, which can easily lead to the wiring sequence being confused.

[0038] The strain gauges are soldered onto the circuit board, which is detachably connected to the housing 5 via a fixing structure. This improves the stability of the strain gauge fixing and facilitates assembly and use.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A connection structure for a six-dimensional force sensor, characterized in that: The device includes a housing (5), inside which a circuit board is fixed by a fixing structure. The circuit board is provided with a strain gauge connection section, and a strain gauge wire solder joint section (1) is provided on the strain gauge connection section. The circuit board is also provided with a sensor output lead solder joint section (4). The circuit board is provided with printed wires that connect the strain gauge wire solder joint section (1) and the sensor output lead solder joint section (4).

2. The connection structure for a six-dimensional force sensor according to claim 1, characterized in that: The fixing structure includes a fixing hole (2) opened at the center of the circuit board, a screw is inserted into the fixing hole (2), and the end of the screw is threaded to the outer shell (5).

3. The connection structure for a six-dimensional force sensor according to claim 1, characterized in that: Each strain gauge connection section is provided with a sensor deformation beam outlet clearance hole (3).

4. The connection structure for a six-dimensional force sensor according to claim 3, characterized in that: The strain gauge wire welding point segment (1) is provided in two parallel rows, and is located on both sides of the sensor deformation beam wire exit clearance hole (3).

5. The connection structure for a six-dimensional force sensor according to claim 1, characterized in that: The strain gauge connection section is arranged in four sections around the center of the circuit board.

6. The connection structure for a six-dimensional force sensor according to claim 3, characterized in that: The sensor deformation beam outlet clearance hole (3) is rectangular.

7. The connection structure for a six-dimensional force sensor according to claim 1, characterized in that: The circuit board is circular in the center.

8. The connection structure for a six-dimensional force sensor according to claim 7, characterized in that: The strain gauge connection section is rectangular and located on the outer ring of the circuit board.

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