Capacitor fixing device for capacitor withstand voltage test

Abstract

The utility model provides a capacitor fixing device for a capacitor withstand voltage test, which comprises a supporting fixed seat, a fixing assembly is arranged on the upper end face of a stable bottom plate, and an extrusion assembly is arranged on the upper end face of the fixing assembly. When the holding rod swings backwards, the holding rod can drive the fixed abutting block to move forwards together through the connecting piece, the hinge seat, the linkage rod and the pushing seat to abut against and fix the pin located in the limiting groove, and when the holding rod swings backwards, the pushing seat can drive the fixed abutting block to move backwards to relieve abutting and fixing of the pin. An adjusting screw rod drives a supporting piece to move forwards through a follow-up wafer to extrude a compression spring, the extrusion force of an extrusion block on a fixed abutting block is increased along with the increase of the extrusion force of the compression spring, and otherwise, the extrusion force of the extrusion block on the fixed abutting block is reduced along with the increase of the extrusion force of the compression spring. Therefore, a tester can adjust the extrusion force of the fixed abutting block according to requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitor fixing for voltage withstand testing, in particular to a capacitor fixing device for voltage withstand testing. Background Art

[0002] A capacitor is a device that holds electric charge. It consists of two conductors placed close to each other with a non-conductive insulating medium sandwiched between them. Capacitors are one of the electronic components used extensively in electronic equipment and are widely used in circuits for DC isolation, AC passing, coupling, bypassing, filtering, tuning circuits, energy conversion, and control. To ensure circuit safety, processed capacitors need to undergo a withstand voltage test. The process of applying a high voltage to a capacitor without damaging the performance of the insulating material is called a withstand voltage test. In order to ensure the safety of the experiment, a corresponding fixing device is required to secure the capacitor during the withstand voltage test.

[0003] Publication number "CN218158050U" provides a capacitor fixing device for capacitor withstand voltage testing. The bidirectional threaded rod is driven to rotate by a motor, and the mounting plates on both sides are moved toward the center along the through groove through thread transmission. When the clamping plate contacts the capacitor, the connecting rod buffers and contracts to reduce the impact force on the capacitor. The clamping plate moves toward the mounting plate and contacts the pressure switch, so that the pressure switch controls the motor to stop running. The connecting rod pushes the clamping plate so that the side of the clamping plate can be tightly attached to the surface of the capacitor so that the clamping plate clamps the capacitor to fix it, which helps to prevent the capacitor from being damaged by excessive pressure.

[0004] However, the above technical solutions and the prior art have the following defects:

[0005] Although the fixing device can clamp and fix the capacitor, it cannot electrically connect the capacitor to the withstand voltage tester at the same time. As a result, in actual use, the clamped capacitor needs to be electrically connected separately, and the operation steps are cumbersome, which affects the testing efficiency of the capacitor. Secondly, the fixing device uses a motor to drive a bidirectional threaded rod and a clamp to clamp and fix the capacitor. This clamping method is not convenient for constant clamping of the same type of capacitor during each use, and it is easy to have too much or too little clamping force, which is not practical. Utility Model Content

[0006] The purpose of the present utility model is to provide a capacitor fixing device for capacitor withstand voltage test, so as to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A capacitor fixing device for capacitor withstand voltage testing includes a stable base plate, a support base, and a capacitor to be tested. The front side of the upper end face of the stable base plate is fixedly connected to the support base, and the capacitor to be tested is arranged above the support base. The upper end face of the stable base plate is provided with a fixing component, and the fixing component is used to squeeze and fix the capacitor to be tested placed on the upper end face of the support base. The upper end face of the fixing component is provided with an extrusion component, and the extrusion component enables the fixing component to have a retractable extrusion capability.

[0009] Preferably, the fixing assembly includes a sliding seat, a limiting seat, a linkage rod, a hinge seat, a connecting piece, a holding rod, a support block, a fixing plate and a fixed interference block. The fixing plate is installed on the rear side of the upper end surface of the stabilizing base plate, the front side of the upper end surface of the fixing plate is fixedly connected to the limiting seat, the rear side of the upper end surface of the fixing plate is fixedly connected to the support block, the annular side surface of the support block is movably connected to the connecting piece, the upper side of the inner wall of the connecting piece is provided with a holding rod, the front side of the inner wall of the connecting piece is movably connected to the hinge seat, the front side of the hinge seat is movably connected to the linkage rod, the front end of the linkage rod is installed with a sliding seat, and the upper side of the inner part of the sliding seat is installed with a fixed interference block.

[0010] Preferably, a first connecting pin is provided on the lower side of the connecting piece, a second connecting pin is provided on the rear side of the hinge seat, and a third connecting pin is provided on the front side of the hinge seat.

[0011] Preferably, the extrusion assembly includes a limiting support cylinder, a guide groove, an extrusion block, a compression spring, a support plate and an adjustment screw. The guide grooves are symmetrically provided on the left and right sides of the upper end surface of the push seat, an extrusion block is installed in the middle position of the rear end surface of the fixed resistance block, a limiting support cylinder is installed on the rear side of the guide groove, a compression spring is installed inside the limiting support cylinder, a support plate is installed on the rear side of the limiting support cylinder, and adjustment screws are symmetrically installed on the left and right sides of the push seat.

[0012] Preferably, the front end of the adjusting screw is provided with a follower disc, the rear end of the adjusting screw is provided with a rotating cap, the rear end surface of the supporting plate is installed with a blocking plate, and the guide groove matches the fixed interference block.

[0013] Preferably, limit rods are symmetrically provided on the left and right sides of the front end surface of the push seat, limit holes are symmetrically opened on the left and right sides inside the supporting seat, and the limit holes match the limit rods, the front end surface of the fixed resistance block is provided with an insulating silicone sheet, and the annular side of the holding rod is wrapped with an anti-slip sleeve.

[0014] Preferably, conductive blocks are symmetrically fixedly connected to the left and right sides of the upper end surface of the support seat, fixing screws are installed on the front side of the upper end surface of the conductive block, and a limiting slot is provided on the rear end surface of the conductive block. Pins are symmetrically provided on the left and right sides of the lower end surface of the capacitor to be tested, and the pins match the limiting slots, and an anti-slip pad is provided on the lower end surface of the stable base plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. During the withstand voltage test of the capacitor to be tested, by swinging the holding rod forward to the right position, the holding rod can drive the fixed resistance block to move forward together through the connecting piece, the hinge seat, the linkage rod and the push seat to resist and fix the pins in the limit slot, and the conductive block and the wire can electrically connect the pins at the bottom of the capacitor to be tested with the external withstand voltage tester, so that the external withstand voltage tester can perform the withstand voltage test on the capacitor to be tested. When the holding rod is swung backward, the push seat can drive the fixed resistance block to move backward to release the resistance fixation on the pins, which is convenient for testing. In addition, this structure can also constantly clamp the capacitor to be tested, avoiding the situation where the clamping force is too large or too small each time during the clamping process of the capacitor.

[0017] 2. By rotating the adjusting screw forward, the adjusting screw can drive the support plate to move forward through the follower disc to further squeeze the compression spring, so that the extrusion force of the compression spring is further increased. As the extrusion force of the compression spring increases, the extrusion force of the extrusion block on the fixed resistance block will also increase. Conversely, the extrusion force of the extrusion block on the fixed resistance block will decrease, so that the tester can adjust the extrusion force of the fixed resistance block according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a left side view of the fixing assembly and the extrusion assembly in the present utility model;

[0020] Figure 3 It is a right side cross-sectional view of the fixing assembly and the extrusion assembly in the present utility model;

[0021] Figure 4 for Figure 3 A magnified view of middle A;

[0022] Figure 5 This is a structural diagram of the extrusion component in the present utility model.

[0023] In the figure: 1. Stable base plate; 11. Anti-slip pad; 2. Fixed assembly; 21. Sliding seat; 22. Limit seat; 23. Linkage rod; 24. Articulated seat; 241. Third connecting pin; 242. Second connecting pin; 25. Connecting plate; 251. First connecting pin; 26. Holding rod; 261. Anti-slip sleeve; 27. Support block; 28. Fixed plate; 29. ​​Fixed resistance block; 291. Insulating silicone sheet; 211. Limit rod; 212. Limit hole; 3. Extrusion assembly; 31. Limit support cylinder; 32. Guide groove; 33. Extrusion block; 34. Compression spring; 35. Support plate; 351. Blocking plate; 36. Adjusting screw; 361. Follow-up disc; 362. Rotating cap; 4. Support seat; 41. Fixing screw; 42. Conductive block; 421. Limiting groove; 5. Capacitor to be tested; 51. Pin. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] Example 1:

[0027] A capacitor fixing device for capacitor withstand voltage test, comprising a stable base plate 1, a support base 4 and a capacitor to be tested 5, wherein the front side of the upper end face of the stable base plate 1 is fixedly connected to the support base 4, the capacitor to be tested 5 is arranged above the support base, the upper end face of the support base 4 is symmetrically fixedly connected to the left and right sides of the upper end face of the support base 4, the conductive blocks 42 are embedded and fixed on the upper end face of the support base 4 by bonding, the conductive blocks 42 are connected to an external withstand voltage tester through a wire, and the conductive blocks 42 facilitate the electrical connection between the capacitor to be tested 5 and the external withstand voltage tester, so that the external withstand voltage tester can connect the capacitor to be tested through the wire and the conductive blocks 42. The capacitor 5 is subjected to a withstand voltage test. Since the detailed structure and working principle of the withstand voltage test of the capacitor are relatively mature technologies in the existing technology, they will not be described in detail here. A fixing screw 41 is installed on the front side of the upper end of the conductive block 42. The fixing screw 41 is convenient for fixing the wire inserted into the conductive block 42. A limiting groove 421 is provided on the rear end face of the conductive block 42. Pins 51 are symmetrically provided on the left and right sides of the lower end face of the capacitor 5 to be tested, and the pins 51 match the limiting groove 421. The limiting groove 421 facilitates the rear end of the conductive block 42 to limit the pin 51 on the lower end face of the capacitor 5 to be tested first.

[0028] The lower end surface of the stable base plate 1 is provided with an anti-slip pad 11, and the anti-slip pad 11 makes the bottom of the stable base plate 1 more anti-slip. The upper end surface of the stable base plate 1 is provided with a fixing component 2, and the fixing component 2 is used to squeeze and fix the capacitor 5 to be tested placed on the upper end surface of the support seat 4 to prevent the capacitor 5 to be tested from loosening during the voltage test. The upper end surface of the fixing component 2 is provided with an extrusion component 3, and the extrusion component 3 enables the fixing component 2 to have a retractable extrusion capability to prevent the fixing component 2 from squeezing and deforming the pin 51 and causing damage. The support seat 4 and the stable base plate 1 are an integrated structure. The support seat 4, the stable base plate 1 and the sliding seat 21 are all made of engineering plastics. The support seat 4, the stable base plate 1 and the sliding seat 21 are all made of engineering plastics. Not only do they have high mechanical strength, but they also have good heat resistance and electrical insulation, which can prevent deformation or leakage during use.

[0029] The fixing assembly 2 includes a sliding seat 21, a limiting seat 22, a linkage rod 23, a hinge seat 24, a connecting piece 25, a gripping rod 26, a support block 27, a fixing plate 28 and a fixed contact block 29. A fixing plate 28 is installed on the rear side of the upper end surface of the stable base plate 1. The fixing plate 28 is connected to the limiting seat 22 and the support block 27 by welding. The fixing plate 28 can support and fix the limiting seat 22 and the support block 27. The front side of the upper end surface of the fixing plate 28 is fixedly connected to the limiting seat 22. The limiting seat 22 can limit the linkage rod 23 to prevent the linkage rod 23 from deflecting or shaking during the forward and backward movement. The rear side of the upper end surface of the fixing plate 28 is fixedly connected to the support block 27. The support block 27 can pass The connecting piece 25 is supported by the first connecting pin 251, and the connecting piece 25 is movably connected to the annular side of the support block 27. The connecting piece 25 is connected to the holding rod 26 by welding. A holding rod 26 is provided on the upper side of the inner wall of the connecting piece 25. The connecting piece 25 is convenient for the tester to push and pull the hinge seat 24 through the holding rod 26. The front side of the inner wall of the connecting piece 25 is movably connected to the hinge seat 24, and the front side of the hinge seat 24 is movably connected to the linkage rod 23. The hinge seat 24 can drive the sliding seat 21 to move back and forth through the linkage rod 23. A sliding seat 21 is installed at the front end of the linkage rod 23. The sliding seat 21 can not only support the fixed resistance block 29, but also drive the fixed resistance block 29 to move back and forth.

[0030] A fixed abutment block 29 is installed on the upper side of the sliding seat 21. The fixed abutment block 29 can abut and fix the pin 51 placed in the limit groove 421 to prevent the capacitor 5 to be tested from shaking during the withstand voltage test. A first connecting pin 251 is provided on the lower side of the connecting piece 25. The first connecting pin 251 facilitates the active connection between the connecting piece 25 and the support block 27. A second connecting pin 242 is provided on the rear side of the hinge seat 24. The second connecting pin 242 facilitates the active connection between the hinge seat 24 and the connecting piece 25. A third connecting pin 241 is provided on the front side of the hinge seat 24. The third connecting pin 241 facilitates the active connection between the hinge seat 24 and the linkage rod 23. The left and right sides of the front end of the sliding seat 21 The limiting rod 211 is symmetrically arranged, and the limiting rod 211 and the sliding seat 21 are an integrated structure. The limiting holes 212 are symmetrically opened on the left and right sides of the supporting seat 4, and the limiting holes 212 match the limiting rod 211. The matching limiting holes 212 and the limiting rod 211 can assist in limiting the sliding seat 21, so as to further improve the stability of the forward and backward displacement of the sliding seat 21. The front end face of the fixed resistance block 29 is provided with an insulating silicone sheet 291. The insulating silicone sheet 291 not only makes the front end face of the fixed resistance block 29 have insulation ability, but also avoids hard contact between the fixed resistance block 29 and the pin 51. The annular side of the holding rod 26 is wrapped with an anti-slip sleeve 261. The anti-slip sleeve 261 makes the annular side of the holding rod 26 more comfortable and anti-slip.

[0031] Example 2:

[0032] On the basis of Example 1, in this embodiment, by rotating the adjusting screw 36 forward, the adjusting screw 36 can drive the support plate 35 to move forward through the follower disc 361 to further squeeze the compression spring 34, so that the squeezing force of the compression spring 34 is further increased. As the squeezing force of the compression spring 34 increases, the squeezing force of the squeezing block 33 on the fixed resistance block 29 will also increase. Conversely, the squeezing force of the squeezing block 33 on the fixed resistance block 29 will decrease, so that the tester can adjust the squeezing force of the fixed resistance block 29 according to needs.

[0033] The extrusion assembly 3 includes a limiting support cylinder 31, a guide groove 32, an extrusion block 33, a compression spring 34, a support plate 35 and an adjusting screw 36. Guide grooves 32 are symmetrically provided on the left and right sides of the upper end surface of the push seat 21. The guide grooves 32 match the fixed interference block 29. The guide grooves 32 not only facilitate the fixed interference block 29 to move back and forth inside the push seat 21, but also prevent the fixed interference block 29 from being offset during use. An extrusion block 33 is installed in the middle position of the rear end surface of the fixed interference block 29. The extrusion block 33 can support the fixed interference block 29. A limiting support cylinder 31 is installed on the rear side of the guide groove 32. The limiting support cylinder 31 can limit and support the extrusion block 33.

[0034] A compression spring 34 is installed inside the limiting support cylinder 31, and the compression spring 34 enables the extrusion block 33 to have a retractable extrusion capability. A support sheet 35 is installed on the rear side of the limiting support cylinder 31, and the support sheet 35 can squeeze the compression spring 34. Adjustment screws 36 are symmetrically installed on the left and right sides of the push seat 21. The adjustment screw 36 is connected to the follower disc 361 and the rotating cap 362 by welding. A longitudinal internal threaded through hole is opened on the upper side of the push seat 21, and the longitudinal internal threaded through hole is engaged with the adjustment screw 36. The longitudinal internal threaded through hole enables the adjustment screw 36 to have the ability to move forward and backward during the forward and reverse rotation process. , so that the adjusting screw 36 can drive the supporting piece 35 to move forward and backward, a following disc 361 is provided at the front end of the adjusting screw 36. The following disc 361 not only facilitates the adjustment screw 36 to drive the supporting piece 35 to move together, but also prevents the supporting piece 35 and the adjusting screw 36 from rotating together. A rotating cap 362 is provided at the rear end of the adjusting screw 36. The rotating cap 362 facilitates the tester to rotate and adjust the adjusting screw 36 by hand. A blocking piece 351 is installed on the rear end surface of the supporting piece 35. The blocking piece 351 can block and limit the following disc 361 to prevent separation between the following disc 361 and the supporting piece 35.

[0035] Working principle: During the withstand voltage test of the capacitor 5 to be tested, the tester first places the device at the required position on the end face of the test bench, then holds the capacitor 5 to be tested with one hand and places it vertically on the upper end of the support base 4. During this process, the pin 51 needs to be in the limit groove 421, and then the other hand holds the holding rod 26 and swings it forward to the right position, so that the holding rod 26 drives the linkage rod 23 to move forward through the connecting piece 25 and the hinge seat 24, and the linkage rod 23 drives the push seat 21 to move forward, thereby causing the push seat 21 to move forward. The shifting seat 21 drives the fixed resistance block 29 to move forward together to resist and fix the pin 51 in the limiting groove 421, so as to prevent the capacitor 5 to be tested from being loosened and displaced during the test; and in this process, the squeezing block 33 will enable the fixed resistance block 29 to have a certain forward and backward displacement ability under the expansion and contraction squeezing force of the compression spring 34, so as to prevent the fixed resistance block 29 from squeezing too much and causing the pin 51 to be squeezed and deformed, so that the fixed resistance block 29 can fix it without damaging the pin 51, and then the tester can use the external resistance The pressure tester and the conductive block 42 perform a withstand voltage test on the capacitor 5 to be tested. When the test is completed, the tester only needs to hold the holding rod 26 again and swing it backward, so that the holding rod 26 can drive the push seat 21 to move backward through the connecting piece 25, the hinge seat 24 and the linkage rod 23, and then the push seat 21 drives the fixed resistance block 29 to move backward to release the resistance to the pin 51. At this time, the capacitor 5 to be tested can be taken away after the test; in the later use process, the tester only needs to adjust the screw by turning the cap 362. When 36 rotates forward, the adjusting screw 36 can drive the support piece 35 to move forward through the follower disc 361, and the support piece 35 moving forward will further squeeze the compression spring 34, so that the squeezing force of the compression spring 34 is further increased. As the squeezing force of the compression spring 34 increases, the squeezing force of the squeezing block 33 on the fixed resistance block 29 will also increase. Conversely, the squeezing force of the squeezing block 33 on the fixed resistance block 29 will decrease, so that the tester can adjust the squeezing force of the fixed resistance block 29 according to needs.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by 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 the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A capacitor fixing device for capacitor withstand voltage test, comprising a stabilizing base plate (1), a supporting seat (4) and a capacitor to be tested (5), characterized in that: The upper end face of the stable base plate (1) is fixedly connected to a support base (4), a capacitor to be tested (5) is arranged above the support base, a fixing assembly (2) is arranged on the upper end face of the stable base plate (1), and the fixing assembly (2) is used to squeeze and fix the capacitor to be tested (5) placed on the upper end face of the support base (4), and an extrusion assembly (3) is arranged on the upper end face of the fixing assembly (2), and the extrusion assembly (3) enables the fixing assembly (2) to have a telescopic extrusion capability.

2. The capacitor fixing device for capacitor withstand voltage test according to claim 1, characterized in that: The fixing assembly (2) comprises a push seat (21), a limit seat (22), a linkage rod (23), a hinge seat (24), a connecting piece (25), a gripping rod (26), a support block (27), a fixing plate (28) and a fixed contact block (29); a fixing plate (28) is installed on the rear side of the upper end face of the stabilizing base plate (1); the front side of the upper end face of the fixing plate (28) is fixedly connected to the limit seat (22); the rear side of the upper end face of the fixing plate (28) is fixedly connected to the support A support block (27) is provided, wherein the annular side surface of the support block (27) is movably connected to a connecting piece (25), a holding rod (26) is provided on the upper side of the inner wall of the connecting piece (25), a hinge seat (24) is movably connected to the front side of the inner wall of the connecting piece (25), a linkage rod (23) is movably connected to the front side of the inner wall of the hinge seat (24), a sliding seat (21) is installed at the front end of the linkage rod (23), and a fixed contact block (29) is installed on the upper side of the inner wall of the sliding seat (21).

3. The capacitor fixing device for capacitor withstand voltage test according to claim 2, characterized in that: A first connecting pin (251) is provided on the lower side of the connecting piece (25), a second connecting pin (242) is provided on the rear side of the hinge seat (24), and a third connecting pin (241) is provided on the front side of the hinge seat (24).

4. The capacitor fixing device for capacitor withstand voltage testing according to claim 2, characterized in that: The extrusion assembly (3) comprises a limiting support cylinder (31), a guide groove (32), an extrusion block (33), a compression spring (34), a support plate (35) and an adjustment screw (36); the guide grooves (32) are symmetrically provided on the left and right sides of the upper end surface of the push seat (21); the extrusion block (33) is installed at the middle position of the rear end surface of the fixed contact block (29); the limiting support cylinder (31) is installed on the rear side of the guide groove (32); the compression spring (34) is installed on the inside of the limiting support cylinder (31); the support plate (35) is installed on the rear side of the limiting support cylinder (31); and the adjustment screw (36) is symmetrically installed on the left and right sides of the inside of the push seat (21).

5. The capacitor fixing device for capacitor withstand voltage test according to claim 4, characterized in that: The front end of the adjusting screw (36) is provided with a follower disc (361), the rear end of the adjusting screw (36) is provided with a rotating cap (362), the rear end surface of the supporting piece (35) is installed with a blocking piece (351), and the guide groove (32) matches the fixed abutment block (29).

6. The capacitor fixing device for capacitor withstand voltage test according to claim 2, characterized in that: The front end surface of the push seat (21) is symmetrically provided with limit rods (211) on both sides, and the inside of the support seat (4) is symmetrically provided with limit holes (212) on both sides, and the limit holes (212) match the limit rods (211). The front end surface of the fixed contact block (29) is provided with an insulating silicone sheet (291), and the annular side surface of the holding rod (26) is wrapped with an anti-slip sleeve (261).

7. The capacitor fixing device for capacitor withstand voltage test according to claim 1, characterized in that: Conductive blocks (42) are symmetrically fixedly connected to the left and right sides of the upper end surface of the support base (4); fixing screws (41) are installed on the front side of the upper end surface of the conductive block (42); a limiting slot (421) is provided on the rear end surface of the conductive block (42); pins (51) are symmetrically provided on the left and right sides of the lower end surface of the capacitor to be tested (5), and the pins (51) match the limiting slots (421); and an anti-slip pad (11) is provided on the lower end surface of the stabilizing base plate (1).

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