Elastomeric structure for a multi-axis force sensor

Abstract

The utility model relates to sensor technical field, specifically disclose a kind of elastomeric structure for multi-axis force sensor, comprising: first shell, second shell, T-shaped beam, first installation cabin, second installation cabin, third installation cabin, first pin hole, second pin hole, first step surface, second step surface and give way slot;The setting of first installation cabin, second installation cabin and third installation cabin can be suitable for the vertical installation of multiple circuit boards and electrical elements, and the middle of the connecting end face of second shell is closed structure and is provided with larger diameter first mounting hole, second mounting hole, first pin hole and second pin hole, so that elastomeric structure has greater stress intensity to resist deformation, and the setting of mouth can also repair and maintain strain gauge on T-shaped beam without removing circuit board, more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of sensor technology, and specifically relates to an elastic body structure for a multi-axis force sensor. Background Technology

[0002] Traditional multiaxial force sensors have relatively simple functions, resulting in fewer internal circuit boards. However, if the functionality of the multiaxial force sensor is expanded to include more circuit boards, the housing of a traditional multiaxial force sensor cannot accommodate them. Furthermore, the circumferential counterweight changes after adding circuit boards and electrical components, affecting the dynamic balance value. Increasing the number of circuit boards and electrical components also necessitates improving the connection strength and sealing of the overall elastomer. Common sensor elastomers have completely open, hollow connection ends, which are not only difficult to seal but also result in poor stress resistance. Moreover, the addition of circuit boards makes the repair and assembly of the sensor's strain gauges a technical challenge. Repairing strain gauges requires disassembling all circuit boards, which is not only time-consuming but also risks damaging other precision components and creating safety hazards.

[0003] Patent document with application number "CN2023227692104" discloses a force measuring beam and sensor elastomer. As can be seen from the specification and drawings of the prior art, the overall capacity of the sensor is small, which makes it unsuitable for use on circuit boards with multiple electrical components and multiple functions. Furthermore, its bottom is a completely open structure, which makes it difficult to do well in terms of force bearing and sealing. In addition, the elastomer in the prior art is a flat structure and does not have a dedicated compartment for mounting circuit boards. Its overall capacity is limited and it is not suitable for mounting multiple circuit boards and electrical components.

[0004] The above background information is provided only to assist in understanding the utility model concept and technical solution of this utility model, and it does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0005] The purpose of this invention is to provide an elastomer structure for a multiaxial force sensor, thereby overcoming the shortcomings of existing axial force sensor elastomer structures that are not suitable for mounting multiple circuit boards, have poor force at the connection end, and are inconvenient for strain gauge repair.

[0006] To achieve the above objectives, this utility model provides an elastic body structure for a multi-axis force sensor, comprising: a first housing and a second housing; one end of the first housing is connected to the second housing via a T-beam; one end of the second housing faces the first housing and has a second mounting compartment; the other end of the second housing has a clearance groove, a second connecting hole, and a second pin hole; the clearance groove communicates with the bottom of the second mounting compartment and corresponds to the position of the T-beam; the first housing contains a first mounting compartment; one end of the first housing has a passage opening communicating with the bottom of the first mounting compartment; the other end of the first housing has a hatch, a first connecting hole, and a first pin hole; the side wall of the first mounting compartment has several first stepped surfaces and a counterweight; the end of the counterweight facing the hatch has a second stepped surface.

[0007] Preferably, in the above technical solution, the number of the relief grooves is three or more and they are evenly distributed around the center of the second housing, and one end of the relief groove extends outward from the side of the second housing.

[0008] Preferably, in the above technical solution, the T-beam includes a crossbeam and a longitudinal beam. There are two crossbeams symmetrically arranged on both sides of the longitudinal beam. The end of the longitudinal beam is fixedly connected to one end of the first housing, and the end of the crossbeam is fixedly connected to both sides of the relief groove. There is a certain distance between the side of the crossbeam facing the other end of the second housing and the end face of the other end of the second housing.

[0009] Preferably, in the above technical solution, a third mounting compartment is provided on the end face of the other end of the second housing.

[0010] Preferably, in the above technical solution, the third mounting compartment has a central positioning boss in the middle and a third limiting curved surface on the side, and the position of the second pin hole corresponds to the position of the central positioning boss and the third limiting curved surface.

[0011] Preferably, in the above technical solution, a plurality of first cable clearance openings are provided on the outer periphery of the through-hole, and the first cable clearance openings are evenly distributed around the center of the first housing.

[0012] Preferably, in the above technical solution, a second cable routing opening is provided on the end face of the other end of the first housing, and the second cable routing opening connects the side of the first mounting compartment with the side of the first housing.

[0013] Preferably, in the above technical solution, the inner wall of the first installation compartment is provided with a plurality of protruding first limiting curved surfaces, and the position of the first connecting hole corresponds to the position of the first limiting curved surfaces.

[0014] Preferably, in the above technical solution, the inner wall of the first installation compartment is provided with a plurality of protruding second limiting curved surfaces, the position of the first pin hole corresponds to the position of the second limiting curved surfaces, and the counterweight and each of the second limiting curved surfaces are uniformly arranged around the center of the first shell.

[0015] Preferably, in the above technical solution, the outer periphery of the hatch is provided with an injection groove.

[0016] Compared with existing technologies, this utility model has the following beneficial effects: 1. The elastomer structure for the multi-axis force sensor in this utility model has a first mounting chamber, a second mounting chamber, and a third mounting chamber respectively provided in the first housing and the second housing. The first mounting chamber has a first step surface and a second step surface, which makes it suitable for the vertical installation of multiple circuit boards and electrical components. The middle of the connecting end face of the second housing is a closed structure, which has a large stress strength and can resist deformation. The opening allows for the repair and maintenance of strain gauges on the T-beam without removing the circuit board, which is more convenient.

[0017] 2. The side wall of the first mounting compartment in this utility model is provided with a counterweight, which can form a uniformly distributed structure with the second limiting curved surface to achieve the requirements of dynamic balance. Furthermore, a second stepped surface is provided on its top, which can support and position the installation of the circuit board.

[0018] 3. The outer periphery of the passage in this utility model is provided with a first cable routing port so that the circuit boards in the second mounting compartment and the first mounting compartment can be interconnected through the cable of the software. A second cable routing port is provided on the end face of the other end of the first housing so as to connect the circuit board in the first compartment with external electrical components.

[0019] 4. The first limiting surface and the second limiting surface in this utility model can not only accommodate the first connecting hole and the first pin hole to increase the diameter of the first connecting hole and the first pin hole and thus improve the strength of the connection, but also play a limiting role when installing the circuit board.

[0020] 5. The hatch of this utility model is provided with an injection groove on its outer periphery. When in use, a cover is installed at the hatch, and the injection groove is filled with sealant to improve the sealing performance of the first compartment.

[0021] 6. The first and second shells of this utility model are respectively provided with a first pin hole and a second pin hole on their two end faces. These not only play a positioning role during assembly, but also improve the torsional strength of the connection, thereby increasing the overall torsional load.

[0022] 7. The other end face of the second housing in this utility model is provided with a third mounting compartment, which can be used to expand the mounting of the circuit board to increase the mounting space of the circuit board. A central positioning boss is provided in the middle of the third mounting compartment, and a third limiting curved surface is provided on the side of the third mounting compartment, so as to play a positioning and orientation role when the circuit board is installed. Attached Figure Description

[0023] Figure 1 This is a structural diagram of an elastomer structure used in multi-axis force sensors.

[0024] Figure 2 This is a structural diagram of the elastomer structure used in multi-axis force sensors from another perspective.

[0025] Explanation of key figure labels: 100-First housing, 110-First mounting compartment, 111-First limiting surface, 112-Second limiting surface, 120-Pass-through port, 121-First cable clearance port, 130-Hatch, 140-First connecting hole, 150-First pin hole, 160-First stepped surface, 170-Counterweight, 171-Second stepped surface, 180-Second cable clearance port, 190-Glue injection groove; 200-Second housing, 210-Second mounting compartment, 220-Relief groove, 221-Beveled surface, 230-Second connecting hole, 240-Second pin hole, 250-Third mounting compartment, 260-Center positioning boss, 270-Third limiting surface; 300 - T-beam, 310 - crossbeam, 320 - longitudinal beam. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0028] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" 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. The embodiments of this utility model will now be described based on its overall structure.

[0030] like Figures 1 to 2 As shown, the elastic body structure for the axial force sensor in this embodiment includes: a first housing 100, a first mounting chamber 110, a first limiting surface 111, a second limiting surface 112, a passage 120, a first cable clearance opening 121, a hatch 130, a first connecting hole 140, a first pin hole 150, a first stepped surface 160, a counterweight part 170, a second stepped surface 171, a second cable clearance opening 180, an injection groove 190, a second housing 200, a second mounting chamber 210, a clearance groove 220, a chamfered surface 221, a second connecting hole 230, a second pin hole 240, a third mounting chamber 250, a central positioning boss 260, a third limiting surface 270, a T-beam 300, a crossbeam 310, and a longitudinal beam 320.

[0031] One end of the first housing 100 is connected to the second housing 200 via a T-beam 300. One end of the second housing 200 faces the first housing 100 and has a second mounting compartment 210. The other end of the second housing 200 has a clearance groove 220, a second connecting hole 230, and a second pin hole 240. The clearance groove 220 communicates with the bottom of the second mounting compartment 210 and corresponds to the position of the T-beam 300. The first housing 100 contains a first mounting compartment 110. One end of the first housing 100 has a passage 120 that communicates with the bottom of the first mounting compartment 110. The other end of the first housing 100 has a hatch 130 and a first connecting hole 140. The first mounting compartment 110 has a first pin hole 150, and its side wall is provided with a number of first stepped surfaces 160 and a counterweight part 170. The counterweight part 170 has a second stepped surface 171 at one end facing the hatch 130. The outer periphery of the hatch 130 is provided with an injection groove 190. A third mounting compartment 250 is provided at the end face of the other end of the second housing 200. A central positioning boss 260 is provided in the middle of the third mounting compartment 250. A third limiting curved surface 270 is provided on the side of the third mounting compartment. There are two second pin holes 240. The two second positioning pin holes 240 are respectively located at the positions of the central positioning boss 260 and the third limiting curved surface 270.

[0032] More specifically, there are three or more relief grooves 220 evenly distributed around the center of the second housing 200. One end of each relief groove 220 extends outward from the side of the second housing 200. A chamfered surface 221 is provided at the junction of the end face of the other end of the relief groove 220 and the two sides of the relief groove 220. The second pin hole 240 is located near the center of the other end of the second housing 200. The T-beam 300 includes two crossbeams 310 and two longitudinal beams 320. The number of crossbeams 310 is two, symmetrically arranged on the longitudinal beams 310 and 320. On both sides of 20, the end of the longitudinal beam 320 is fixedly connected to one end of the first housing 100, and the end of the transverse beam 310 is fixedly connected to both sides of the relief groove 220. The strain gauges on the transverse beam 310 and the longitudinal beam 320 can be removed and replaced through the relief groove 220. There is a certain distance between the side of the transverse beam 310 facing the other end of the second housing 200 and the end face of the other end of the second housing 200, so as to prevent the T-beam 300 from interfering with the outside, so as to prevent affecting the measurement accuracy of the T-beam 300.

[0033] In addition, a number of first cable clearance openings 121 are provided on the outer periphery of the through opening 120. The first cable clearance openings 121 are evenly distributed around the center of the first housing 100. A second cable clearance opening 180 is provided on the end face of the other end of the first housing 100. The second cable clearance opening 180 connects the side of the first mounting compartment 110 with the side of the first housing 100. The first cable clearance openings 121 and the second cable clearance opening 180 are used to make way for the flexible cable.

[0034] More specifically, the inner wall of the first mounting compartment 110 is provided with several protruding first limiting curved surfaces 111 and second limiting curved surfaces 112. The position of the first connecting hole 140 corresponds to the position of the first limiting curved surface 111, and the position of the first pin hole 150 corresponds to the position of the second limiting curved surface 112. The counterweight part 170 and each of the second limiting curved surfaces 112 are evenly arranged around the center of the first housing 100 to achieve circumferential balance.

[0035] Next, the working principle of the elastomer structure for a multi-axis force sensor in this embodiment will be described in detail to enable those skilled in the art to better understand this utility model: In use, the first mounting compartment 110 within the first housing 100 can be used to vertically mount multiple circuit boards and electrical components. The second mounting compartment 210 within the second housing 200 can be used to mount circuit boards and electrical components. The circuit boards in the second mounting compartment 210 can be connected to the circuit boards in the first mounting compartment 110 via flexible flat cables, which can pass through the first flat cable clearance opening 121. The circuit boards in the first mounting compartment 110 can also be connected to external electrical components via flexible flat cables, which can pass through the second flat cable clearance opening 180. Adding a first pin hole 150 and a second pin hole 240 to the connection end face, as well as increasing the number and diameter of the first connecting holes 140 and the second connecting holes 230, improves the overall connection strength, enabling it to withstand greater torsional torque. At the bottom of the second housing 200… The recessed groove 220 allows for the replacement and maintenance of strain gauges on the T-beam 300 without removing the circuit board, making it more convenient and faster. The third mounting compartment 250 at the bottom of the second housing 200 further expands the mounting space for the circuit board. The central positioning boss 260 and the third curved surface 270 not only position the circuit board within the third mounting compartment 250 but also provide space for the second pin hole 240, increasing its diameter and connection strength. Due to the second limiting curved surface 112, there may be a counterweight imbalance in the circumferential direction of the first housing 100. The counterweight part 170 counteracts this imbalance, and the second stepped surface 171 on the top of the counterweight part 170 provides support for the circuit board mounting.

[0036] In summary, the elastomer structure for the multi-axis force sensor in this embodiment is suitable for the vertical mounting of multiple circuit boards and electrical components by providing a first mounting chamber 110, a second mounting chamber 210, and a third mounting chamber 250 in the first housing 100 and the second housing 200, respectively. The first mounting chamber 110 is provided with a first step surface 160 and a second step surface 171. Furthermore, the middle of the connecting end face of the second housing 200 is a closed structure, which has a large stress resistance to deformation. The opening 120 allows for the repair and maintenance of strain gauges on the T-beam 300 without removing the circuit board, making it more convenient.

[0037] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An elastic body structure for a multi-axis force sensor, characterized in that, include: A first housing and a second housing. One end of the first housing is connected to the second housing via a T-beam. One end of the second housing faces the first housing and has a second mounting compartment. The other end of the second housing has a clearance groove, a second connecting hole, and a second pin hole. The clearance groove is connected to the bottom of the second mounting compartment and corresponds to the position of the T-beam. The first housing contains a first mounting compartment. One end of the first housing has a passageway connected to the bottom of the first mounting compartment. The other end of the first housing has a hatch, a first connecting hole, and a first pin hole. The side wall of the first mounting compartment has several first stepped surfaces and a counterweight. The end of the counterweight facing the hatch has a second stepped surface.

2. The elastomer structure for a multi-axis force sensor according to claim 1, characterized in that, The number of the relief grooves is three or more and they are evenly distributed around the center of the second housing. One end of each relief groove extends outward from the side of the second housing.

3. The elastic body structure for a multi-axis force sensor according to claim 2, characterized in that, The T-beam includes a crossbeam and a longitudinal beam. There are two crossbeams symmetrically arranged on both sides of the longitudinal beam. The end of the longitudinal beam is fixedly connected to one end of the first housing. The end of the crossbeam is fixedly connected to both sides of the relief groove. There is a certain distance between the side of the crossbeam facing the other end of the second housing and the end face of the other end of the second housing.

4. The elastic body structure for a multi-axis force sensor according to claim 1, characterized in that, A third mounting compartment is provided on the end face of the other end of the second housing.

5. The elastomer structure for a multi-axis force sensor according to claim 4, characterized in that, The third mounting compartment has a central positioning boss in the middle and a third limiting surface on the side. The position of the second pin hole corresponds to the positions of the central positioning boss and the third limiting surface.

6. The elastomer structure for a multi-axis force sensor according to claim 1, characterized in that, The outer periphery of the passage is provided with a plurality of first cable clearance openings, which are evenly distributed around the center of the first housing.

7. The elastic body structure for a multi-axis force sensor according to claim 1, characterized in that, The other end face of the first housing is provided with a second cable routing opening, which connects the side of the first mounting compartment with the side of the first housing.

8. The elastomer structure for a multi-axis force sensor according to claim 1, characterized in that, The inner wall of the first installation compartment is provided with several protruding first limiting curved surfaces, and the position of the first connecting hole corresponds to the position of the first limiting curved surface.

9. The elastic body structure for a multi-axis force sensor according to claim 1, characterized in that, The inner wall of the first installation compartment is provided with several protruding second limiting curved surfaces. The position of the first pin hole corresponds to the position of the second limiting curved surface. The counterweight and each of the second limiting curved surfaces are evenly arranged around the center of the first shell.

10. The elastomer structure for a multi-axis force sensor according to claim 1, characterized in that, The hatch is provided with an injection groove on its outer periphery.

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