Auxiliary clamp for sensor production

Abstract

This invention belongs to the technical field of sensor production auxiliary equipment, specifically relating to an auxiliary fixture for sensor production. It includes a base, elastic bodies, strain gauges, positioning plates, support rods, lower pressure blocks, compression springs, upper pressure blocks, and pressure plates. The base has a fixing hole in the center, and the bottom of the support rod is fixed within the fixing hole. Grooves are symmetrically arranged on both sides of the base, and multiple elastic bodies are stacked within each groove. Positioning plates are installed between adjacent elastic bodies. Strain gauges are symmetrically arranged on the elastic bodies, and the bottom of the positioning plates presses against the strain gauges. The upper pressure block, compression spring, and lower pressure block are sequentially mounted on the support rod. This invention achieves the bonding and fixing of strain gauges on multiple irregular elastic bodies through the spaced stacking of multiple positioning plates. A certain amount of force is applied vertically to the upper and lower pressure blocks by rotating a ring handle and maintained for a period of time to ensure that the strain gauges are tightly bonded to the elastic bodies, thereby achieving the functional effect of the sensor.

Description

Technical Field

[0001] This invention belongs to the technical field of sensor production auxiliary equipment, and specifically relates to an auxiliary fixture for sensor production. Background Technology

[0002] Pressure sensors have wide applications in national economic production. A typical pressure sensor consists of an elastic body, strain gauges attached to specific deformation locations on the elastic body, and peripheral circuitry. An external force applied to the sensor causes the elastic body to deform, resulting in tensile or contractile deformation proportional to the magnitude of the force at a specific deformation location. This causes a change in the electrical parameters of the strain gauge attached to that location. The peripheral circuitry detects the degree of change in the strain gauge's electrical parameters to determine the magnitude of the external force applied to the sensor, ultimately enabling the measurement of physical quantities such as force and weight.

[0003] The elastomers used in our company's SWF sensors are generally irregular elastomers (see attached image). Figure 9 As shown, after attaching the strain gauge to the corresponding position on the elastomer, adhesive is needed. After applying the adhesive, a certain amount of force is applied in the vertical direction and maintained for a period of time to ensure a tight fit between the strain gauge and the elastomer, thus achieving the sensor's functional effect. Simply attaching the strain gauge and placing it on the elastomer is insufficient to fix and fit the strain gauge to the elastomer. Furthermore, the fixture needs to be easy to install and remove to improve efficiency.

[0004] Therefore, it is very important to design a clamp that can adapt to the elastomer, achieve the effect of applying force, and is easy to install and remove. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an auxiliary fixture for sensor production.

[0006] An auxiliary fixture for sensor production includes a base, elastic bodies, strain gauges, a positioning plate, a support rod, a lower pressure block, a compression spring, an upper pressure block, and a pressure plate. The base has a fixing hole in the middle, and the bottom of the support rod is fixed in the fixing hole. Grooves are symmetrically arranged on both sides of the base, and multiple elastic bodies are stacked in each groove. A positioning plate is installed between adjacent elastic bodies. Strain gauges are symmetrically arranged on the elastic bodies. The bottom of the positioning plate is pressed against the strain gauges. The upper pressure block, compression spring, and lower pressure block are sequentially mounted on the support rod, and a pressure plate is installed on the top of the upper pressure block.

[0007] Preferably, the pressure plate includes a strip plate, a connecting rod, and an annular handle. The strip plate has a threaded hole in the middle. The connecting rod is symmetrically arranged on both sides of the threaded hole. An annular handle is installed on the top of the connecting rod. The inner diameter of the annular handle is larger than the diameter of the threaded hole.

[0008] Preferably, the positioning plate is I-shaped, with a through hole in the center. The positioning plate includes a left positioning piece and a right positioning piece. A fixing strip is provided at one end of the inner side of the left positioning piece, and a fixing groove is provided at the other end of the inner side of the left positioning piece. A fixing strip is provided at one end of the inner side of the right positioning piece, and a fixing groove is provided at the other end of the right positioning piece.

[0009] Preferably, the fixing strip of the left positioning piece is inserted into the fixing groove of the right positioning piece, and the fixing strip of the right positioning piece is inserted into the fixing groove of the left positioning piece.

[0010] Preferably, the outer edges of the fixing grooves of the left and right positioning pieces are provided with magnetic layers.

[0011] Preferably, the upper pressure block has a threaded hole in the middle, the lower pressure block has a through hole in the center, and an elastic ring is provided at the top edge of the through hole.

[0012] Preferably, the support rod has a threaded portion at the top and a fastening hole at the bottom.

[0013] Preferably, the base has multiple symmetrically arranged insertion holes on both sides, insertion rods are installed on the insertion holes, and baffles are installed between adjacent insertion rods.

[0014] Preferably, multiple intervals are evenly distributed on the side of the elastomer, and the two ends of the positioning plate pass through the intervals and are pressed onto the strain gauge.

[0015] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0016] This invention achieves the bonding and fixing of strain gauges on multiple irregular elastic bodies by stacking multiple positioning plates at intervals. A certain amount of force is applied vertically to the upper and lower pressure blocks by rotating a ring handle and maintained for a period of time to ensure that the strain gauges are tightly bonded to the elastic bodies, thereby achieving the functional effect of a sensor. In addition, the two-piece design of the positioning plates facilitates installation and disassembly, improving work efficiency. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the auxiliary fixture of the present invention;

[0018] Figure 2 This is a structural diagram of the pressure plate of the auxiliary clamp of the present invention;

[0019] Figure 3 This is a partial structural diagram of the base plate of the auxiliary fixture of the present invention;

[0020] Figure 4 This is a front view of the base plate of the auxiliary fixture of the present invention;

[0021] Figure 5This is an overall structural diagram of the positioning plate of the auxiliary clamp of the present invention;

[0022] Figure 6 This is a diagram showing the internal structure of the positioning plate of the auxiliary clamp of the present invention;

[0023] Figure 7 This is a structural diagram of the support rod of the auxiliary clamp of the present invention;

[0024] Figure 8 This is a structural diagram of the lower pressure block of the auxiliary clamp of the present invention;

[0025] Figure 9 This is a structural diagram of the elastic body of the auxiliary clamp of the present invention.

[0026] The markings in the image are as follows:

[0027] 100-Base; 101-Insertion rod; 102-Baffle; 103-Groove; 104-Insertion hole; 105-Fixing hole; 200-Elastic body; 300-Strain gauge; 400-Positioning plate; 401-Left positioning piece; 402-Through hole one; 403-Fixing insert; 404-Magnetic layer; 405-Right positioning piece; 406-Fixing groove; 500-Support rod; 501-Threaded part; 502-Fasting hole; 600-Lower pressure block; 601-Through hole two; 602-Elastic ring; 700-Compression spring; 800-Upper pressure block; 900-Pressure plate; 901-Strip plate; 902-Ring handle; 903-Threaded hole one; 904-Connecting rod. Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this invention.

[0029] As attached Figure 1-9 As shown, an auxiliary fixture for sensor production includes a base 100, an elastic body 200, a strain gauge 300, a positioning plate 400, a support rod 500, a lower pressure block 600, a compression spring 700, an upper pressure block 800, and a pressure plate 900. The base 100 has a fixing hole 105 in the middle, and the bottom of the support rod 500 is fixed in the fixing hole 105. The base 100 has symmetrically arranged grooves 103 on both sides, and multiple elastic bodies 200 are stacked in each groove 103. A positioning plate 400 is installed between adjacent elastic bodies 200. Strain gauges 300 are symmetrically arranged on the elastic bodies 200. The bottom of the positioning plate 400 is pressed against the strain gauges 300. The upper pressure block 800, the compression spring 700, and the lower pressure block 600 are sequentially mounted on the support rod 500. The pressure plate 900 is installed on the top of the upper pressure block 800.

[0030] Specifically, the pressure plate 900 includes a strip plate 901, a connecting rod 904, and a ring handle 902. The strip plate 901 has a threaded hole 903 in the middle. The connecting rod 904 is symmetrically arranged on both sides of the threaded hole 903. The ring handle 902 is installed on the top of the connecting rod 904. The inner diameter of the ring handle 902 is larger than the diameter of the threaded hole 903. The strip plate 901 is directly pressed onto the upper pressure block 800. By rotating the ring handle 902, the upper pressure block 800 is moved downward along the threaded part 501 of the support rod 500. The ring handle 902 is more convenient to operate than the wrench used before, and the threaded hole 903 can also be threadedly connected to the threaded part 501 of the support rod 500, avoiding the possibility of the upper pressure block 800 coming off upward.

[0031] Specifically, the positioning plate 400 is I-shaped, with pressing parts at both ends for pressing the strain gauge 300. A through hole 402 is provided in the center of the positioning plate 400 for the support rod 500 to pass through. The positioning plate 400 includes a left positioning piece 401 and a right positioning piece 405. A fixing strip 403 is provided at one end of the inner side of the left positioning piece 401, and a fixing groove 406 is provided at the other end. Similarly, a fixing strip 403 is provided at one end of the inner side of the right positioning piece 405, and a fixing groove 406 is provided at the other end. The fixing strip 403 of the left positioning piece 401... 03 Insert the fixing strip 403 into the fixing groove 406 of the right positioning piece 405. The fixing strip 403 of the right positioning piece 405 is inserted into the fixing groove 406 of the left positioning piece 401. The setting of the fixing strip 403 and the fixing groove 406 facilitates disassembly without having to unscrew it from the top of the support rod. The two-piece design of the positioning plate 400 allows the left positioning piece 401 and the right positioning piece 405 to be separated directly from the side. Furthermore, when one of the stacked positioning plates 400 is damaged and needs to be replaced, the left positioning piece 401 and the right positioning piece 405 can also be separated directly from the side for subsequent replacement, greatly improving work efficiency.

[0032] Specifically, a magnetic layer 404 is provided on the outer edge of the fixing groove 406 of the left positioning piece 401 and the right positioning piece 405. In addition to the insertion and fixing of the fixing strip 403 and the fixing groove 406, the magnetic effect of the magnetic layer 404 makes the left positioning piece 401 and the right positioning piece 405 tightly and firmly connected.

[0033] Specifically, the upper pressure block 800 is provided with a threaded hole 2 in the middle, and the lower pressure block 600 is provided with a through hole 2 601 at the center. An elastic ring 602 is provided at the top edge of the through hole 2 601. The provision of the elastic ring 602 is conducive to the inner ring of the compression spring 700 being stuck outside the elastic ring 602, and the height of the elastic ring 602 can be designed according to the actual use, thereby avoiding the displacement of the compression spring 700.

[0034] Specifically, the top of the support rod 500 is provided with a threaded part 501, which is threadedly connected to the threaded hole of the upper pressure block 800. The bottom of the support rod 500 is provided with a fastening hole 502, and the support rod 500 and the base 100 are fixedly connected by external bolts.

[0035] Specifically, the base 100 has multiple symmetrically arranged insertion holes 104 on both sides, and insertion rods 101 are installed on the insertion holes 104. Baffles 102 are installed between adjacent insertion rods 101 to prevent the elastomers 200 from falling off the side when stacked.

[0036] Specifically, multiple intervals are evenly distributed on the side of the elastic body 200, and the two ends of the positioning plate 400 pass through the intervals and are pressed onto the strain gauge 300.

[0037] The specific working principle of this invention is as follows:

[0038] By stacking the elastic bodies 200 with strain gauges 300 attached in the groove 103 of the base 100, and pressing adjacent elastic bodies 200 onto the strain gauges 300 through the gaps between the elastic bodies 200 by the two ends of the positioning plate 400, after all the elastic bodies 200 are stacked, the lower pressure block 600 presses tightly onto the top elastic body 200. By rotating the ring handle 902, the pressure plate 900 applies force to the upper pressure block 800, which moves downward along the threaded portion 501 of the support rod 500. The threaded hole 903 of the pressure plate 900 can also be threadedly connected to the threaded portion 501 of the support rod 500, ensuring that it is fixed after the force is applied and maintained for a period of time, so that the strain gauges 300 adhere to the elastic bodies 200 under the action of adhesive, thereby achieving the functional effect of the sensor.

[0039] Furthermore, the fixing strip 403 and fixing groove 406 facilitate disassembly without having to unscrew it from the top of the support rod. The two-piece design of the positioning plate 400 allows the left positioning piece 401 and the right positioning piece 405 to be separated directly from the side. Moreover, when one of the stacked positioning plates 400 is damaged and needs to be replaced, the left positioning piece 401 and the right positioning piece 405 can also be separated directly from the side for subsequent replacement, greatly improving work efficiency. In addition, the magnetic effect of the magnetic layer 404 ensures that the left positioning piece 401 and the right positioning piece 405 are tightly and firmly connected.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications and substitutions based on the technical solutions and inventive concepts provided by the present invention should be covered within the scope of protection of the present invention.

Claims

1. An auxiliary fixture for sensor production, comprising a base (100), an elastic body (200), a strain gauge (300), a positioning plate (400), a support rod (500), a lower pressing block (600), a compression spring (700), an upper pressing block (800), and a pressing plate (900), characterized in that: The base (100) has a fixing hole (105) in the middle. The bottom of the support rod (500) is fixed in the fixing hole (105). The base (100) has grooves (103) symmetrically arranged on both sides. Multiple elastic bodies (200) are stacked in the grooves (103). A positioning plate (400) is installed between adjacent elastic bodies (200). The positioning plate (400) is I-shaped. Strain gauges (300) are symmetrically arranged on the elastic bodies (200). The bottom of the positioning plate (400) is pressed onto the strain gauges (300). An upper pressure block (800), a compression spring (700) and a lower pressure block (600) are sequentially mounted on the support rod (500). A pressure plate (900) is installed on the top of the upper pressure block (800). Multiple intervals are evenly distributed on the side of the elastic body (200). The two ends of the positioning plate (400) pass through the intervals and are pressed onto the strain gauges (300).

2. The auxiliary fixture for sensor production according to claim 1, characterized in that: The pressure plate (900) includes a strip plate (901), a connecting rod (904) and an annular handle (902). The strip plate (901) has a threaded hole (903) in the middle. The connecting rod (904) is symmetrically arranged on both sides of the threaded hole (903). The annular handle (902) is installed on the top of the connecting rod (904). The inner diameter of the annular handle (902) is larger than the diameter of the threaded hole (903).

3. The auxiliary fixture for sensor production according to claim 1, characterized in that: The positioning plate (400) has a through hole (402) at its center. The positioning plate (400) includes a left positioning piece (401) and a right positioning piece (405). A fixing strip (403) is provided at one end of the inner side of the left positioning piece (401), and a fixing groove (406) is provided at the other end of the inner side of the left positioning piece (401). A fixing strip (403) is provided at one end of the inner side of the right positioning piece (405), and a fixing groove (406) is provided at the other end of the right positioning piece (405).

4. The auxiliary fixture for sensor production according to claim 3, characterized in that: The fixing insert (403) of the left positioning piece (401) is inserted into the fixing groove (406) of the right positioning piece (405), and the fixing insert (403) of the right positioning piece (405) is inserted into the fixing groove (406) of the left positioning piece (401).

5. The auxiliary fixture for sensor production according to claim 4, characterized in that: The outer edge of the fixing groove (406) of the left positioning piece (401) and the right positioning piece (405) is provided with a magnetic layer (404).

6. The auxiliary fixture for sensor production according to claim 1, characterized in that: The upper pressure block (800) has a threaded hole 2 in the middle, and the lower pressure block (600) has a through hole 2 (601) at the center, with an elastic ring (602) at the top edge of the through hole 2 (601).

7. The auxiliary fixture for sensor production according to claim 1, characterized in that: The support rod (500) has a threaded part (501) at the top and a fastening hole (502) at the bottom.

8. The auxiliary fixture for sensor production according to claim 1, characterized in that: The base (100) has multiple symmetrical holes (104) on both sides, and a plug rod (101) is installed on the plug hole (104). A baffle (102) is installed between adjacent plug rods (101).

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