Multi-channel withstand voltage test fixture for ceramic capacitor

Abstract

The utility model relates to a multi-channel withstand voltage test fixture for a ceramic capacitor. Comprising a base, a test seat arranged on the base, a placing plate arranged on the test seat and used for placing a ceramic capacitor, a moving plate arranged above the placing plate and capable of moving up and down, a plurality of test needles arranged at the bottom of the moving plate at intervals and extending downwards, and a positioning plate located above the moving plate, the connecting rods are arranged at the bottom of the positioning plate, extend downwards, penetrate through the moving plate and are connected with the base, and the pressing mechanism is arranged on the positioning plate, connected with the moving plate and used for driving the moving plate to move up and down. According to the test fixture, the withstand voltage values of a plurality of ceramic capacitors can be tested at a time, tedious manual steps are replaced, the production efficiency is greatly improved, and the effect of saving the labor cost is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of capacitor testing equipment, and in particular relates to a multi-channel withstand voltage testing fixture for ceramic capacitors. Background Art

[0002] In the process of testing the electrical performance of finished ceramic capacitors, high voltage needs to be applied to the product to test the withstand voltage value of the capacitor. The current manual clamping test method can only test one product at a time and the charging and discharging time is long. It is not only time-consuming and laborious, but may also cause electric shock under high voltage conditions. Manual single clamping testing may cause human errors or unstable clamping, causing the product to fall or fly away; manual work also leads to low efficiency of the test process, which needs further improvement. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a multi-channel withstand voltage test fixture for ceramic capacitors.

[0004] The utility model adopts the following technical solutions:

[0005] A ceramic capacitor multi-channel withstand voltage test fixture comprises a base, a test seat arranged on the base, a placement plate arranged on the test seat for placing ceramic capacitors, a movable plate arranged above the placement plate and movable up and down, a plurality of test needles arranged at intervals and extending downward from the bottom of the movable plate, a positioning plate located above the movable plate, a plurality of connecting rods arranged at the bottom of the positioning plate and extending downward through the movable plate and connected to the base, a clamping mechanism arranged on the positioning plate and connected to and driving the movable plate to move up and down, wherein the placement plate is provided with a plurality of placement slots for placing ceramic capacitors, and a plurality of the test needles correspond one-to-one to the plurality of placement slots.

[0006] Furthermore, it also includes a plurality of reset mechanisms arranged between the movable plate and the base, the plurality of reset mechanisms correspond one-to-one to the plurality of connecting rods, and the reset mechanism includes a movable sleeve sleeved on the outer periphery of the connecting rod and connected to the movable plate, and a reset spring with one end connected to the movable sleeve and the other end extending downward and connected to the base.

[0007] Furthermore, the movable sleeve comprises a movable sleeve body sleeved on the outer periphery of the connecting rod and a connecting portion arranged at the upper end of the movable sleeve body and connected to the movable plate.

[0008] Furthermore, a test board connected to a plurality of test pins is disposed on the movable plate, and the test board extends upward from the bottom surface of the movable plate to the top surface, and the movable plate also includes a protective shell disposed on the top surface of the movable plate and sleeved on the test board.

[0009] Furthermore, the clamping mechanism includes a push-pull clamp arranged on the positioning plate and extending downwardly and connected to the protective shell, a mounting plate arranged on the positioning plate for mounting the push-pull clamp, and a clearance hole arranged on the positioning plate for the lower end of the push-pull clamp to pass through.

[0010] Furthermore, the base is provided with a fixing mechanism for fixing the test seat, and the fixing mechanism includes a fixing column extending upwardly arranged on the base, a fixing groove arranged on the side of the test seat for the fixing column to be embedded in, a first fixing hole extending inwardly from the bottom of the fixing groove, a second fixing hole arranged on the fixing column opposite to the first fixing hole, and a fixing bolt passing through the second fixing hole and cooperating with the first fixing hole.

[0011] Furthermore, an arc-shaped guiding surface for guiding the placement plate to be installed on the test seat is formed on the inner side of the upper end of the fixing column.

[0012] Furthermore, a positioning mechanism is provided between the placement plate and the test seat, and the positioning mechanism includes a plurality of positioning posts provided on the top surface of the test seat and a plurality of positioning holes provided on the placement plate for the plurality of positioning posts to be embedded.

[0013] From the above description of the utility model, it can be seen that compared with the prior art, the beneficial effects of the utility model are: the test fixture specified in the present application can test the withstand voltage values ​​of multiple ceramic capacitors at one time, replacing tedious manual steps, greatly improving production efficiency, and achieving the effect of saving labor costs; compared with manual testing, manual testing is inefficient, unstable, and easy to cause electric shock under high voltage conditions, while the fixture of the present application can maintain good contact with the ceramic capacitor, the test results are accurate, and the test effect is high and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the test fixture structure Figure 1 ;

[0015] Figure 2 Schematic diagram of the test fixture structure Figure 2 ;

[0016] Figure 3 Schematic diagram of the test fixture structure Figure 3 ;

[0017] In the figure, 11-base, 12-test seat, 13-placement plate, 14-movable plate, 15-test needle, 16-positioning plate, 17-connecting rod, 18-clamping mechanism, 19-reset mechanism, 20-positioning mechanism, 21-fixing mechanism, 131-placement slot, 141-test plate, 142-protective shell, 143-heat dissipation hole, 181-push-pull type clamp, 182-mounting plate, 183-giving hole, 191-movable sleeve, 192-reset spring, 193-movable sleeve body, 194-connecting part, 201-positioning column, 202-positioning hole, 211-fixing column, 212-fixing slot, 213-first fixing hole, 214-second fixing hole, 215-arc guide surface. DETAILED DESCRIPTION

[0018] The present invention is further described below through specific implementation methods.

[0019] Reference Figures 1 to 3 As shown, a ceramic capacitor multi-channel withstand voltage test fixture includes a base 11, a test socket 12 arranged on the base 11, a placement plate 13 arranged on the test socket 12 for placing ceramic capacitors, a movable plate 14 arranged above the placement plate 13 and movable up and down, a plurality of test needles 15 arranged at intervals and extending downward from the bottom of the movable plate 14, a positioning plate 16 located above the movable plate 14, a plurality of connecting rods 17 arranged at the bottom of the positioning plate 16 and extending downward through the movable plate 14 to connect with the base 11, a clamping mechanism 18 arranged on the positioning plate 16 and connected to drive the movable plate 14 to move up and down, a plurality of reset mechanisms 19 arranged between the movable plate 14 and the base 11, and a positioning mechanism 20 arranged between the placement plate 13 and the test socket 12.

[0020] A fixing mechanism 21 for fixing the test seat 12 is provided on the base 11. Specifically, the fixing mechanism 21 includes two fixing columns 211 spaced apart and extending upward on the base 11, two fixing grooves 212 provided on the side of the test seat 12 for embedding the fixing columns 211 relative to each other, a first fixing hole 213 provided at the bottom of the fixing groove 212 and extending inwardly, a second fixing hole 214 provided on the fixing column 211 and opposite to the first fixing hole 213, and a fixing bolt passing through the second fixing hole 214 and cooperating with the first fixing hole 213. The test seat 12 is fixed on the base 11 through the cooperation of the fixing bolt with the first fixing hole 213 and the second fixing hole 214. Furthermore, an arc-shaped guiding surface 215 is formed on the inner side of the upper end of the fixing column 211 to guide the placement plate 13 to be installed on the test seat 12.

[0021] The placement plate 13 is fixed on the top surface of the test seat 12 and is provided with a plurality of placement slots 131 for placing ceramic capacitors. The plurality of placement slots 131 are arranged in one-to-one correspondence with the plurality of test pins 15 to achieve batch testing of ceramic capacitors.

[0022] The movable plate 14 includes a test plate 141 connected to a plurality of test pins 15 and a protective shell 142 disposed on the top surface of the movable plate 14. Specifically, the test plate 141 extends upward from the bottom surface of the movable plate to the top surface; the protective shell 142 is sleeved on the test plate 141 to protect the test plate 141, and a plurality of heat dissipation holes 143 are disposed on the protective shell.

[0023] The clamping mechanism 18 includes a push-pull clamp 181 arranged on the positioning plate 16, extending downward and connected to the protective shell 142, a mounting plate 182 arranged on the positioning plate 16 for mounting the push-pull clamp 181, and a clearance hole 183 arranged on the positioning plate 16 for the lower end of the push-pull clamp 181 to pass through. Specifically, the push-pull clamp 181 is a commonly used component in the clamping device, and its specific structure and working principle are not further described here. When the handle of the push-pull clamp 181 is pressed down to the lowest point, the test needle 15 just contacts the ceramic capacitor in the relative placement groove 131, and when it is pressed down to the lowest point, it is in a self-locking state, and the upward push generated by the reset mechanism 19 is not enough to drive the handle to rotate upward, so as to ensure the stability of the ceramic capacitor during the test process.

[0024] Multiple reset mechanisms 19 correspond one-to-one to multiple connecting rods 17. The reset mechanism 19 includes a movable sleeve 191 that is sleeved on the outer periphery of the connecting rod 17 and connected to the movable plate 14, and a reset spring 192 that is connected to the movable sleeve 191 at one end and extends downwardly to the base 11 at the other end. Through the setting of the reset spring 192, an upward thrust can be provided for the handle to be rotated upward to release the self-locking state after the test is completed, thereby reducing the work intensity of the operator; specifically, the movable sleeve 191 includes a movable sleeve body 193 that is sleeved on the outer periphery of the connecting rod 17 and a connecting portion 194 that is arranged at the upper end of the movable sleeve body 193 and connected to the movable plate 14. The connecting portion 194 and the movable plate 14 are fixedly connected by a bolt assembly to ensure that the movable plate 14 can move up and down stably.

[0025] The positioning mechanism 20 includes a plurality of positioning posts 201 disposed on the top surface of the test seat 12 and a plurality of positioning holes 202 disposed on the placement plate 13 for the plurality of positioning posts 201 to be embedded in. Through the cooperation between the positioning posts 201 and the positioning holes 202 , the placement plate 13 can be quickly and accurately installed on the test seat 12 .

[0026] When testing ceramic capacitors, fix the placement plate 13 on the test seat 12, and then use a shaking box to shake and arrange multiple ceramic capacitors, and then put them into the corresponding placement slots 131 in the placement plate 13; and control the push-pull clamp 181 to drive the movable plate 14 to move downward so that the multiple test needles 15 are respectively against the multiple ceramic capacitors, and then start the withstand voltage test table to perform a withstand voltage test on the ceramic capacitors; after the test is completed, turn the handle of the push-pull clamp 181 upward to release the self-locking state. At this time, the handle continues to rotate upward under the action of the reset spring 192, driving the multiple test needles 15 away from the placement plate, and the operator then takes out the ceramic capacitors that have completed the test.

[0027] The test fixture defined in the present application can test the withstand voltage values ​​of multiple ceramic capacitors at one time, replacing tedious manual steps, greatly improving production efficiency, and achieving the effect of saving labor costs; compared with manual testing, manual testing is inefficient, unstable, and prone to electric shock under high voltage conditions, while the fixture of the present application can maintain good contact with the ceramic capacitor, the test results are accurate, and the test effect is high and safe.

[0028] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of application of the present invention and the contents of the specification should still fall within the scope covered by the present invention.

Claims

1. A ceramic capacitor multi-channel withstand voltage test fixture, characterized by: The invention comprises a base, a test seat arranged on the base, a placement plate arranged on the test seat for placing ceramic capacitors, a movable plate arranged above the placement plate and movable up and down, a plurality of test needles arranged at intervals and extending downward from the bottom of the movable plate, a positioning plate located above the movable plate, a plurality of connecting rods arranged at the bottom of the positioning plate and extending downward through the movable plate and connecting the base, and a clamping mechanism arranged on the positioning plate and connected to drive the movable plate to move up and down. The placement plate is provided with a plurality of placement slots for placing ceramic capacitors, and the plurality of test needles correspond one to one to the plurality of placement slots.

2. A ceramic capacitor multi-channel withstand voltage test fixture according to claim 1, characterized in that: It also includes a plurality of reset mechanisms arranged between the movable plate and the base, the plurality of reset mechanisms corresponding one to one with the plurality of connecting rods, the reset mechanism including a movable sleeve sleeved on the outer periphery of the connecting rod and connected to the movable plate, and a reset spring with one end connected to the movable sleeve and the other end extending downward and connected to the base.

3. A ceramic capacitor multi-channel withstand voltage test fixture according to claim 2, characterized in that: The moving sleeve comprises a moving sleeve body sleeved on the outer periphery of the connecting rod and a connecting part arranged on the upper end of the moving sleeve body and connected with the moving plate.

4. The multi-channel withstand voltage test fixture for ceramic capacitors according to claim 1, characterized in that: The movable plate is provided with a test plate connected with a plurality of test pins, the test plate extends upward from the bottom surface of the movable plate to the top surface, and the movable plate further comprises a protective shell arranged on the top surface of the movable plate and sleeved on the test plate.

5. A ceramic capacitor multi-channel withstand voltage test fixture according to claim 4, characterized in that: The clamping mechanism comprises a push-pull clamp arranged on the positioning plate and extending downwardly and connected to the protective shell, a mounting plate arranged on the positioning plate for mounting the push-pull clamp, and a clearance hole arranged on the positioning plate for the lower end of the push-pull clamp to pass through.

6. The multi-channel withstand voltage test fixture for ceramic capacitors according to claim 1, characterized in that: The base is provided with a fixing mechanism for fixing the test seat, and the fixing mechanism includes a fixing column extending upwardly provided on the base, a fixing groove provided on the side of the test seat for the fixing column to be embedded in, a first fixing hole extending inwardly from the bottom of the fixing groove, a second fixing hole provided on the fixing column opposite to the first fixing hole, and a fixing bolt passing through the second fixing hole and cooperating with the first fixing hole.

7. A ceramic capacitor multi-channel withstand voltage test fixture according to claim 6, characterized in that: An arc-shaped guiding surface for guiding the placement plate to be installed on the test seat is formed on the inner side of the upper end of the fixing column.

8. The multi-channel withstand voltage test fixture for ceramic capacitors according to claim 1, characterized in that: A positioning mechanism is arranged between the placement plate and the test seat, and the positioning mechanism comprises a plurality of positioning posts arranged on the top surface of the test seat and a plurality of positioning holes arranged on the placement plate for the plurality of positioning posts to be embedded.

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