A test fixture for a chip capacitor
By designing the side clamps and inner push-slide rod structure of the capacitor clamp, the current shunting problem during surface mount capacitor testing was solved, achieving accurate testing and capacitor protection, and avoiding test result deviations and damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2026-03-31
AI Technical Summary
Existing surface mount capacitor test fixtures are prone to current shunting during testing, leading to deviations in test results, and the fixtures may damage capacitors or wires.
A test fixture was designed, comprising a capacitor clamp, a side clamp, an inner push slide, a threaded rotating rod, and a rotating handle. By rotating the handle, the threaded rotating rod is adjusted to push the outer push plate, thereby achieving a tight connection of the capacitor. The capacitor is connected to the capacitor electrode through an inner adapter plate and a conductive pad, thus preventing current shunting in the fixture.
It achieves a tight connection between the capacitor and the tester, avoiding deviations in test results. The capacitor is protected by a pressure-sensitive inner plate and a spring block to prevent damage from excessive clamping force. It also automatically disconnects to protect internal components when the capacitor is about to break down.
Smart Images
Figure CN120085031B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of capacitance testing equipment, specifically a test fixture for surface mount capacitors. Background Technology
[0002] Surface mount capacitors are a type of capacitor material. Surface mount capacitors are also known as multilayer or stacked ceramic chip capacitors, or chip capacitors. They are expressed in two ways: inches and millimeters. Surface mount capacitors are widely used in electrical equipment. When a surface mount capacitor fails, it needs to undergo aging testing.
[0003] Because surface-mount capacitors may be small, it is difficult for the tester's lead wire connectors to remain tightly attached to the capacitor throughout the test under normal circumstances. This can easily lead to current interruption and significant deviations in test results. Therefore, an auxiliary fixture is needed to secure the tester's lead wires to the capacitor. However, typical fixtures often indirectly connect to the internally held capacitor by using adapters to connect the tester's lead wires. This can cause the fixture to shunt the tester's output current, resulting in deviations in test results. Therefore, improvements are needed. Summary of the Invention
[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is: a test fixture for surface mount capacitors, comprising a capacitor fixture, wherein connecting components are symmetrically arranged on both sides of the outer surface of the capacitor fixture;
[0005] The capacitor clamp includes a side clamp plate. An adjusting spring plate is symmetrically arranged on the outer surface of the side clamp plate near the axis. An inner push slide rod is symmetrically arranged on the other side of the outer surface of the side clamp plate. An outer push plate is fixedly connected to the end of the inner push slide rod away from the side clamp plate. Threaded rotating rods are symmetrically arranged on both sides of the inner wall of the outer push plate. A rotating handle is fixedly connected to the end of the threaded rotating rod away from the inner push slide rod. When the threaded rotating rod is rotated by the rotating handle, because the other end of the threaded rotating rod is restricted, the threaded rotating rod can only rotate on its own axis. At this time, the outer push plate on the outer surface of the threaded rotating rod will move along the thread groove of the threaded rotating rod, thereby achieving the effect of pushing the outer push plate.
[0006] The side clamping plate includes a receiving clamping plate. An inner adapter plate is fixedly connected to the middle of the inner cavity of the receiving clamping plate. A guide gasket is evenly arranged on the side of the inner cavity of the inner adapter plate away from the inner push slide rod. A docking guide is fixedly connected to the side of the inner cavity of the inner adapter plate near the inner push slide rod. The inner adapter plate is connected to the electrode of the chip capacitor through the guide gasket and to the terminal of the detector through the docking guide. Pressure-sensing inner plates are symmetrically arranged on the upper and lower sides of the inner wall of the receiving clamping plate. Spring pressure blocks are evenly arranged in the inner cavity of the pressure-sensing inner plates. The connecting component includes a fixed housing. An expansion port is opened at the axis of the inner cavity of the fixed housing. Traction slide rails are symmetrically arranged on the upper and lower sides of the inner wall of the fixed housing. An adjusting clamping arm is slidably connected to the left side of the inner wall of the traction slide rail. Blocking components are symmetrically arranged on the front and rear sides of the inner wall of the fixed housing.
[0007] Furthermore, symmetrical guide grooves are provided on the upper and lower sides of the inner cavity of the fixed housing. The inner wall of the guide groove is slidably connected to the outer surface of the receiving plate. The outer surface of the inner push rod is slidably connected to the inner wall of the guide groove. The end of the inner push rod away from the receiving plate extends to the outside of the fixed housing through the guide groove. A guide cylinder is symmetrically provided on the side of the outer surface of the receiving plate away from the adjusting spring plate. The end of the threaded rod away from the rotating handle is rotatably connected to the inner wall of the guide cylinder. The outer surface of the threaded rod is threadedly connected to the inner wall of the outer push plate through a threaded groove. There are two receiving plates. The side of the outer surface of the receiving plate away from the fixed housing is fixedly connected to the side of the adjusting spring plate. The outer surface of the spring block extends to the outside of the receiving plate through an adapter groove. The outer surface of the pressure-sensing inner plate is fixedly connected to the inner wall of the receiving plate.
[0008] Furthermore, the adjusting clamping arm includes a vertical push cylinder, with an arc-shaped clamping plate fixedly connected to the bottom end of the output shaft of the vertical push cylinder. Built-in pressure rods are symmetrically arranged on both sides of the inner cavity of the arc-shaped clamping plate, and a compression spring is fixedly connected to the top of each built-in pressure rod. A sleeved top cover is fixedly connected to the top of each compression spring. The outer surface of the vertical push cylinder is slidably connected to the inner wall of the traction slide rail, and the outer surface of the traction slide rail is fixedly connected to the inner wall of the fixed housing. The lower surface of the sleeved top cover is fixedly connected to the upper surface of the arc-shaped clamping plate, and the axis of the inner cavity of the sleeved top cover is fixedly connected to the outer surface of the output shaft of the vertical push cylinder.
[0009] Furthermore, the blocking component includes a wall-mounted housing, with an inner push plate slidably connected to its inner wall. Connecting brackets are symmetrically arranged on the upper and lower sides of the outer surface of the inner push plate. Rotary motors are symmetrically arranged on both sides of the inner cavity of the inner push plate via push rods. A striped rotating column is fixedly connected to the outer surface of the output shaft of the rotating motor. The inner push plate is connected to the rotating motor on the outside of the wall-mounted housing via a retractable push rod, and the push rod controls the horizontal movement of the rotating motor, adjusting the distance between the striped rotating column and the instrument connector. A guide groove is symmetrically opened at the front of the inner cavity of the wall-mounted housing. The outer surface of the rotating motor is slidably connected to the inner cavity of the guide groove via a push rod. The bottom end of the connecting bracket is fixedly connected to the outer surface of the inner push plate, and the front end of the connecting bracket is fixedly connected to the outer surface of the vertical push cylinder. There are four wall-mounted housings, and their outer surfaces are fixedly connected to the inner wall of the fixed housing. There are eight connecting brackets, and the outer surface of the striped rotating column is rotatably connected to the inner push plate via a rotating motor.
[0010] The beneficial effects of this invention are as follows:
[0011] 1. This device can fix and clamp the capacitor placed inside by the adjustable side clamps on both sides. The internal adapter plate replaces the capacitor's connector. After the tester's wires are inserted into the fixed housing, they can directly contact and adhere to the mating guide of the internal adapter plate under the clamping action of the adjustable clamping arms. This bypasses most of the adapter components to achieve the connection effect with the capacitor. Therefore, during the capacitor testing process, there will be no problem of test result deviation caused by the clamp shunting the tester's output current.
[0012] 2. This device uses a manual rotating handle to slowly advance the receiving clamp, ensuring that the clamp can clamp the internal capacitor with a relatively appropriate force, without causing serious damage to the capacitor due to excessive clamping force. Before the inner wall of the receiving clamp is in contact with the outer surface of the capacitor, a spring-loaded block will first make contact with the outer surface of the capacitor to test the connection. After triggering the pressure-sensitive inner plate, the operator can slow down the advancement process to avoid the problem of excessive pressure on the capacitor caused by the operator pushing too fast.
[0013] 3. To ensure that the device can accommodate thicker wires, the expansion socket is larger in size. After the wire passes through the expansion socket, the vertical push cylinders on the upper and lower sides will push the corresponding arc-shaped clamps towards the center. The arc-shaped clamps clamp and fix the outer surface of the wire. Before the inner wall of the arc-shaped clamps contacts the outer surface of the wire, the protruding built-in pressure rods on both sides will first contact the outer surface of the wire and then press against the inner wall of the sleeve top cover. At this time, the vertical push cylinders will decelerate in advance to prevent excessive squeezing force on the wire.
[0014] 4. During testing, if the capacitor is about to break down, the current in the circuit will increase, which in turn will increase the current through the internal adapter plate. Then, rotating the motor will start the striped rotating column. When the striped rotating column rotates, it will cause the wire to slide away from the arc-shaped clamp towards the side away from the docking head through rolling friction, so that the tester is physically disconnected from the capacitor, which plays a protective role and prevents the capacitor from breaking down and causing damage to the internal components. Attached Figure Description
[0015] Figure 1 This is the front view of the present invention;
[0016] Figure 2 This is a cross-sectional view of the present invention;
[0017] Figure 3 This is a cross-sectional view of the capacitor clamp of the present invention;
[0018] Figure 4 This is a cross-sectional view of the side clamp of the present invention;
[0019] Figure 5 This is a cross-sectional view of the connecting component of the present invention;
[0020] Figure 6 This is a cross-sectional view of the adjusting clamp arm of the present invention;
[0021] Figure 7 This is a schematic diagram of the blocking component of the present invention.
[0022] In the diagram: 1. Capacitor clamp; 2. Connecting component; 11. Adjusting spring plate; 12. Inner push slide rod; 13. Outer push plate; 14. Threaded rotating rod; 15. Rotating handle; 3. Side clamp plate; 31. Receiving clamp plate; 32. Inner adapter plate; 33. Guide gasket; 34. Docking guide head; 35. Pressure sensing inner plate; 36. Spring pressure block; 21. Fixed housing; 22. Guide inner groove; 23. Expansion socket; 24. Guide rotating cylinder; 25. Traction slide rail; 4. Adjusting clamp arm; 41. Vertical push cylinder; 42. Arc-shaped clamp plate; 43. Built-in pressure rod; 44. Compression spring; 45. Sleeve top cover; 5. Blocking component; 51. Wall-mounted housing; 52. Guide slide groove; 53. Inner push plate; 54. Connecting bracket; 55. Rotating motor; 56. Striped rotating column. Detailed Implementation
[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.
[0024] Example 1, please refer to Figures 1-5 The present invention provides a technical solution: a test fixture for surface mount capacitors, including a capacitor fixture 1, wherein connecting parts 2 are symmetrically arranged on both sides of the outer surface of the capacitor fixture 1;
[0025] The capacitor clamp 1 includes a side clamp 3. An adjustment spring plate 11 is symmetrically arranged on the outer surface of the side clamp 3 near the axis. An inner push slide rod 12 is symmetrically arranged on the other side of the outer surface of the side clamp 3. An outer push plate 13 is fixedly connected to the end of the inner push slide rod 12 away from the side clamp 3. Threaded rotating rods 14 are symmetrically arranged on both sides of the inner wall of the outer push plate 13. A rotating handle 15 is fixedly connected to the end of the threaded rotating rod 14 away from the inner push slide rod 12. When the threaded rotating rod 14 is rotated by rotating handle 15, the threaded rotating rod 14 can only rotate on its own axis because the other end of the threaded rotating rod 14 is restricted. At this time, the outer push plate 13 on the outer surface of the threaded rotating rod 14 will move along the thread groove of the threaded rotating rod 14, thereby achieving the effect of pushing the outer push plate 13.
[0026] The side clamp 3 includes a receiving clamp 31. An inner adapter plate 32 is fixedly connected to the middle of the inner cavity of the receiving clamp 31. A guide pad 33 is evenly arranged on the side of the inner cavity of the inner adapter plate 32 away from the inner push slide rod 12. A docking guide head 34 is fixedly connected to the side of the inner cavity of the inner adapter plate 32 near the inner push slide rod 12. The inner adapter plate 32 is connected to the electrode of the chip capacitor through the guide pad 33 and to the terminal of the detector through the docking guide head 34. Pressure sensing inner plates 35 are symmetrically arranged on the upper and lower sides of the inner wall of the receiving clamp 31. Spring pressure blocks 36 are evenly arranged in the inner cavity of the pressure sensing inner plate 35. The connecting component 2 includes a fixed housing 21. An expansion socket 23 is opened at the axis of the inner cavity of the fixed housing 21. Traction slide rails 25 are symmetrically arranged on the upper and lower sides of the inner wall of the fixed housing 21. An adjusting clamp arm 4 is slidably connected to the left side of the inner wall of the traction slide rail 25. Blocking components 5 are symmetrically arranged on the front and rear sides of the inner wall of the fixed housing 21.
[0027] The upper and lower sides of the inner cavity of the fixed housing 21 are symmetrically provided with guide grooves 22. The inner wall of the guide groove 22 is slidably connected to the outer surface of the receiving clamp 31. The outer surface of the inner push rod 12 is slidably connected to the inner wall of the guide groove 22. The end of the inner push rod 12 away from the receiving clamp 31 extends to the outside of the fixed housing 21 through the guide groove 22. The outer surface of the receiving clamp 31 away from the adjusting spring plate 11 is symmetrically provided with guide cylinders 24. The end of the threaded rod 14 away from the rotating handle 15 is rotatably connected to the inner wall of the guide cylinder 24. The outer surface of the threaded rod 14 is threadedly connected to the inner wall of the outer push plate 13 through a threaded groove. There are two receiving clamps 31. The outer surface of the receiving clamp 31 away from the fixed housing 21 is fixedly connected to the side of the adjusting spring plate 11. The outer surface of the spring pressure block 36 extends to the outside of the receiving clamp 31 through an adapter groove. The outer surface of the pressure-sensing inner plate 35 is fixedly connected to the inner wall of the receiving clamp 31.
[0028] When using this device to test capacitors, insert the capacitor vertically into the middle of the device, that is, the reserved area between the two side clamps 3. However, placing the capacitor directly will cause it to slide out of the device. Therefore, it is necessary to adjust the distance between the two side clamps 3 according to the actual size of the capacitor. The operator rotates the handle 15 by turning it to push the outer push plate 13 in a threaded manner. The inner push slide rod 12 drives the receiving clamp 31 to slide out from the inside of the fixed box 21. At this time, the receiving clamps 31 on both sides gradually clamp and fix the capacitor.
[0029] When the receiving clamp 31 moves towards the side closer to the capacitor, the spring blocks 36 on the upper and lower sides of the receiving clamp 31 will first contact the side of the capacitor, thereby pressing the spring blocks 36 towards the pressure-sensitive inner plate 35. At this time, the operator reduces the pushing speed of the receiving clamp 31 according to the triggered pressure-sensitive inner plate 35, and then clamps the capacitor through the receiving clamps 31 on both sides. At this time, the inner adapter plates 32 on both sides also contact the conductive side of the outer surface of the capacitor through the conductive pads 33.
[0030] After the capacitor setup is completed, the operator inserts the wire ends connected to both ends of the tester into the expansion sockets 23 on both sides. At this time, the adjusting clamps 4 on both sides clamp the wire ends. Then, by moving the traction slide rail 25, the wire ends are pressed and fixed to the outer surface of the docking guide 34. At this time, the tester can connect with the capacitor in a relatively tight manner through the conductivity of the inner adapter plate 32 to perform the capacitor test.
[0031] Example 2, please refer to Figures 1-7This invention provides a technical solution: Based on Embodiment 1, the adjusting clamping arm 4 includes a vertical push cylinder 41. An arc-shaped clamping plate 42 is fixedly connected to the bottom end of the output shaft of the vertical push cylinder 41. Built-in pressure rods 43 are symmetrically arranged on both sides of the inner cavity of the arc-shaped clamping plate 42. A compression spring 44 is fixedly connected to the top of the built-in pressure rod 43, and a sleeved top cover 45 is fixedly connected to the top of the compression spring 44. The outer surface of the vertical push cylinder 41 is slidably connected to the inner wall of the traction slide rail 25, and the outer surface of the traction slide rail 25 is fixedly connected to the inner wall of the fixed housing 21. The lower surface of the sleeved top cover 45 is fixedly connected to the upper surface of the arc-shaped clamping plate 42, and the axis of the inner cavity of the sleeved top cover 45 is fixedly connected to the outer surface of the output shaft of the vertical push cylinder 41.
[0032] The blocking component 5 includes a wall-mounted housing 51. An inner push plate 53 is slidably connected to the inner wall of the wall-mounted housing 51. Connecting brackets 54 are symmetrically arranged on the upper and lower sides of the outer surface of the inner push plate 53. Rotary motors 55 are symmetrically arranged on both sides of the inner cavity of the inner push plate 53 via push rods. Striped rotating columns 56 are fixedly connected to the outer surface of the output shaft of the rotating motors 55. The inner push plate 53 is connected to the rotating motors 55 on the outside of the wall-mounted housing 51 via telescopic push rods, and the rotating motors 55 are controlled to move horizontally via the push rods to adjust the distance between the striped rotating columns 56 and the instrument connector. Guide grooves 52 are symmetrically opened at the front of the inner cavity of the wall-mounted housing 51. The outer surface of the rotating motors 55 is slidably connected to the inner cavity of the guide grooves 52 via push rods. The bottom end of the connecting bracket 54 is fixedly connected to the outer surface of the inner push plate 53, and the front end of the connecting bracket 54 is fixedly connected to the outer surface of the vertical push cylinder 41. There are four wall-mounted box shells 51, and the outer surface of the wall-mounted box shells 51 is fixedly connected to the inner wall of the fixed box shell 21. There are eight connecting brackets 54. The outer surface of the striped rotating column 56 is rotatably connected to the inner push plate 53 through the rotating motor 55.
[0033] To ensure that the device can accommodate thicker wires, the expansion socket 23 is relatively large. After the wire passes through the expansion socket 23, the vertical push cylinders 41 on the upper and lower sides will push the corresponding arc-shaped clamps 42 towards the center. The arc-shaped clamps 42 clamp and fix the outer surface of the wire. Before the inner wall of the arc-shaped clamps 42 contacts the outer surface of the wire, the protruding built-in pressure rods 43 on both sides will first contact the outer surface of the wire and then press against the inner wall of the sleeve top cover 45. At this time, the vertical push cylinders 41 will decelerate in advance to prevent excessive squeezing force on the wire.
[0034] When the traction slide rail 25 drives the vertical push cylinder 41 to slide closer to the docking guide head 34, the vertical push cylinder 41 will drive the inner push plate 53 to slide synchronously through the connecting bracket 54. At this time, the striped rotating column 56 will also slide synchronously and always face the side of the wire clamping position. Through the sliding action of the push rod, the outer surface of the striped rotating column 56 is always in contact with the outer surface of the wire. When the capacitor is about to be broken down, the current in the circuit will increase, and the current through the inner adapter plate 32 will also increase. Then the rotating motor 55 will start the striped rotating column 56. When the striped rotating column 56 rotates, it will drive the wire to slide away from the docking guide head 34 relative to the arc clamp plate 42 through rolling friction, so that the tester is physically disconnected from the capacitor, which plays a protective role.
[0035] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A test fixture for patch capacitors, comprising a capacitor fixture (1), the capacitor fixture (1) is provided with a connecting component (2) symmetrically on both sides of the outer surface, characterized in that: the capacitor fixture (1) comprises a side edge clamping plate (3), the outer surface of the side edge clamping plate (3) is symmetrically provided with an adjusting elastic plate (11) near one side of the axis, the other side of the outer surface of the side edge clamping plate (3) is symmetrically provided with an inner push sliding rod (12), one end of the inner push sliding rod (12) away from the side edge clamping plate (3) is fixedly connected with an outer push plate (13), the inner wall of the outer push plate (13) is symmetrically provided with a threaded rotating rod (14) on both sides, one end of the threaded rotating rod (14) away from the inner push sliding rod (12) is fixedly connected with a rotating handle (15); the side edge clamping plate (3) comprises a containing clamping plate (31), the inner cavity of the containing clamping plate (31) is fixedly connected with an inner pasting adapter disc (32) in the middle, the inner cavity of the inner pasting adapter disc (32) is uniformly provided with a guide adapter pad (33) away from the inner push sliding rod (12) on one side, the inner cavity of the inner pasting adapter disc (32) is fixedly connected with a butt joint guide head (34) near the inner push sliding rod (12) on one side, the inner wall of the containing clamping plate (31) is symmetrically provided with a pressure sensing inner plate (35) on the upper and lower sides, and the inner cavity of the pressure sensing inner plate (35) is uniformly provided with a spring pressing block (36); the connecting component (2) comprises a fixed box shell (21), an expansion socket (23) is formed at the axis of the inner cavity of the fixed box shell (21), the inner wall of the fixed box shell (21) is symmetrically provided with a traction sliding rail (25) on the upper and lower sides, the inner wall of the traction sliding rail (25) is slidably connected with an adjusting clamping arm (4) on the left side, and the inner wall of the fixed box shell (21) is symmetrically provided with a blocking component (5) on the front and back sides; the adjusting clamping arm (4) comprises a vertical push cylinder (41); the blocking component (5) comprises a wall-attached box shell (51), the inner wall of the wall-attached box shell (51) is slidably connected with an inner push plate (53), the outer surface of the inner push plate (53) is symmetrically provided with a connecting card frame (54) on the upper and lower sides, the inner cavity of the inner push plate (53) is symmetrically provided with a rotating motor (55) on both sides through a push rod, and the outer surface of the output shaft of the rotating motor (55) is fixedly connected with a striped rotating column (56); a guide sliding groove (52) is symmetrically formed in the front inner cavity of the wall-attached box shell (51), the outer surface of the rotating motor (55) is slidably connected with the inner cavity of the guide sliding groove (52) through a push rod, the bottom end of the connecting card frame (54) is fixedly connected with the outer surface of the inner push plate (53), and the front end of the connecting card frame (54) is fixedly connected with the outer surface of the vertical push cylinder (41); the number of the wall-attached box shell (51) is four, and the outer surface of the wall-attached box shell (51) is fixedly connected with the inner wall of the fixed box shell (21), the number of the connecting card frame (54) is eight, and the outer surface of the striped rotating column (56) is rotatably connected with the inner push plate (53) through the rotating motor (55). 2. The test fixture for patch capacitors of claim 1, wherein: The upper and lower sides of the inner cavity of the fixed box shell (21) are symmetrically provided with guide inner grooves (22), the inner wall of the guide inner groove (22) is in sliding connection with the outer surface of the containing clamping plate (31), the outer surface of the inner push sliding rod (12) is in sliding connection with the inner wall of the guide inner groove (22), and the end, away from the containing clamping plate (31), of the inner push sliding rod (12) extends to the outside of the fixed box shell (21) through the guide inner groove (22).
3. The test fixture for patch capacitors of claim 2, wherein: The outer surface of the containing clamping plate (31) is symmetrically provided with guide rotating cylinders (24) away from the adjusting elastic plate (11), one end of the threaded rotating rod (14) away from the rotating handle (15) is in rotating connection with the inner wall of the guide rotating cylinder (24), and the outer surface of the threaded rotating rod (14) is in threaded connection with the inner wall of the outer push plate (13) through a threaded groove.
4. The test fixture for patch capacitors of claim 3, wherein: The number of the containing clamping plate (31) is two, the outer surface of the containing clamping plate (31) is fixedly connected with the side surface of the adjusting elastic plate (11) away from the fixed box shell (21), the outer surface of the spring pressing block (36) extends to the outside of the containing clamping plate (31) through an adaptive cutting groove, and the outer surface of the pressure sensing inner plate (35) is fixedly connected with the inner wall of the containing clamping plate (31).
5. The test fixture for patch capacitors of claim 1, wherein: The bottom end of the output shaft of the vertical push cylinder (41) is fixedly connected with an arc-shaped clamping plate (42), both sides of the inner cavity of the arc-shaped clamping plate (42) are symmetrically provided with built-in pressing rods (43), the top of the built-in pressing rod (43) is fixedly connected with a compression spring (44), and the top of the compression spring (44) is fixedly connected with a sleeving top cover (45).
6. The test fixture for patch capacitors of claim 5, wherein: The outer surface of the vertical push cylinder (41) is in sliding connection with the inner wall of the traction sliding rail (25), the outer surface of the traction sliding rail (25) is fixedly connected with the inner wall of the fixed box shell (21), the lower surface of the sleeving top cover (45) is fixedly connected with the upper surface of the arc-shaped clamping plate (42), and the outer surface of the output shaft of the vertical push cylinder (41) is fixedly connected with the inner cavity of the sleeving top cover (45).
Citation Information
Patent Citations
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CN104483514A
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