Ceramic capacitor test fixture

Abstract

The utility model discloses a ceramic capacitor test fixture which comprises a mounting table, a first positioning block and a second positioning block, wherein the first positioning block and the second positioning block are arranged on the surface of the mounting table; wherein the electrical ejector pin in the first positioning block is in sliding connection with the first positioning block, the upper end face of the first positioning block is in threaded connection with a positioning column, and the internal electrical ejector pin is extruded and fixed through the positioning column; the end, away from the first positioning block, of the electric ejector pin in the second positioning block is connected with a spring. A supporting table is fixedly installed in the area between the first positioning block and the second positioning block. The testing requirements of ceramic capacitors with different packaging sizes are met by adjusting the ejector pin on the right side of the testing jig and changing the distance between testing contact points of the testing jig, the spring design is arranged on the left side of the testing jig, a sample can be conveniently taken and placed in the testing process, the contact force of the testing sample in the testing process can be guaranteed, and the testing efficiency is improved. And the sample placing position of the test fixture is V-shaped, so that the test sample is convenient to place and is not easy to shake.

Description

Technical Field

[0001] The utility model relates to the field of ceramic capacitor testing, in particular to a ceramic capacitor testing fixture. Background Art

[0002] Ceramic capacitors are made of high dielectric constant capacitor ceramic (barium titanate monoxide) extruded into round tubes, discs or disks as the dielectric, and silver is plated on the ceramic as the electrode by the sintering method.

[0003] Ceramic capacitors are generally small in size and vary in size. Electrical testing is usually performed by manual welding, which makes it impossible to perform large-scale testing. Utility Model Content

[0004] The purpose of the utility model is to provide a ceramic capacitor test fixture to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a ceramic capacitor test fixture, comprising a mounting table and a first positioning block and a second positioning block arranged on the mounting table surface;

[0006] The first positioning block and the second positioning block are arranged opposite to each other, and electrical ejectors are installed in the inner cavities of the first positioning block and the second positioning block;

[0007] The electrical ejector pin in the first positioning block is slidably connected to the first positioning block, and a positioning column is threadedly connected to the upper end surface of the first positioning block, and the electrical ejector pin inside is squeezed and fixed by the positioning column;

[0008] One end of the electrical ejector pin in the second positioning block away from the first positioning block is connected to a spring, and the spring pushes the electrical ejector pin in the second positioning block in a normal state, so that the electrical ejector pin has a tendency to extend toward the first positioning block;

[0009] A support platform is fixedly installed in the area between the first positioning block and the second positioning block. The support platform is used to place the ceramic capacitor, and the upper surface of the support platform is a V-shaped groove structure.

[0010] Preferably, a rear end of the electrical ejector pin in the first positioning block is fixedly connected to a sliding rod, and the sliding rod is exposed outside the first positioning block.

[0011] Preferably, the rear end of the electrical ejector pin in the second positioning block is fixedly connected to a limiting rod, a limiting ring is fixedly sleeved on the limiting rod, a first guide plate and a second guide plate are installed at intervals at one end of the second positioning block away from the first positioning block, the first guide plate and the second guide plate both have through holes for the limiting rod to pass through, a spring is sleeved on the limiting rod, and the spring abuts between the limiting ring and the second guide plate.

[0012] Preferably, a guide rail is fixedly provided in the middle of the first positioning block and the second positioning block, and the guide rail is slidably connected to the electrical ejector pin and is electrically connected to the electrical terminal.

[0013] Preferably, a wire harness tube is fixedly installed at the bottom of the guide rail, and the wire harness tube is fixed in the table hole of the mounting table by a connector, and the wire harness is fixed through the wire harness tube and connected to the electrical terminal through the guide rail.

[0014] Preferably, the electrical ejector pin is a copper column structure, and a rubber sleeve is partially sleeved on the outer surface of the copper column structure.

[0015] Preferably, the first guide plate and the second guide plate are both fixed to the mounting platform by a combination of bolts and nuts, and the first positioning block and the second positioning block are fixed to the mounting platform from the bottom by a screw structure.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model changes the distance between the test contact points of the test fixture by adjusting the ejector pin on the right side of the test fixture to meet the test requirements of ceramic capacitors with different package sizes. The left side of the test fixture is designed with a spring, which is convenient for taking and placing samples during testing and can also ensure the contact force of the test samples during testing. The sample placement position of the test fixture is designed in a V-shape, which is convenient for placing the test samples and the samples are not easy to shake. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] As shown in the figure, this embodiment provides a ceramic capacitor test fixture, including a mounting platform 1 and a first positioning block 14 and a second positioning block 15 arranged on the surface of the mounting platform 1;

[0021] The first positioning block 14 and the second positioning block 15 are arranged opposite to each other. An electrical ejector pin 9 is installed in the inner cavity of the first positioning block 14 and the second positioning block 15. The electrical ejector pin 9 is a copper column structure, and a rubber sleeve 10 is sleeved on the outer surface thereof.

[0022] Among them, the electrical ejector pin 9 in the first positioning block 14 is slidably connected to the first positioning block 14, and a positioning column 24 is threadedly connected to the upper end surface of the first positioning block 14, and the internal electrical ejector pin 9 is squeezed and fixed by the positioning column; the rear end of the electrical ejector pin 9 in the first positioning block 14 is fixedly connected to a sliding rod 21, and the sliding rod 21 is exposed from the first positioning block 14.

[0023] The end of the electrical ejector pin 9 in the second positioning block 15 away from the first positioning block 14 is connected to a spring. Under normal conditions, the spring pushes the electrical ejector pin 9 in the second positioning block 15 so that it tends to extend toward the first positioning block 14. The rear end of the electrical ejector pin 9 in the second positioning block 15 is fixedly connected to the limit rod 5, and the limit ring 11 is fixedly sleeved on the limit rod 5. The end of the second positioning block 15 away from the first positioning block 14 is installed with a first guide plate 8 and a second guide plate 4 at intervals. The first guide plate 8 and the second guide plate 4 are both provided with through holes for the limit rod 5 to pass through. The limit rod 5 is sleeved with a spring 3, and the spring 3 abuts between the limit ring 11 and the second guide plate 4. The first guide plate 8 and the second guide plate 4 are both fixed to the mounting platform 1 by a combination of bolts 6 and nuts 12, and the first positioning block 14 and the second positioning block 15 are fixed to the mounting platform 1 from the bottom by a screw structure.

[0024] A guide rail 16 is fixedly arranged in the middle of the first positioning block 14 and the second positioning block 15. The guide rail 16 is slidably connected to the electrical ejector pin 9 and is electrically connected to the electrical terminal. A wire harness tube 17 is fixedly installed at the bottom of the guide rail 16. The wire harness tube 17 is fixed in the table hole of the mounting table 1 by a connector 19. The wire harness is fixed through the wire harness tube 17 and connected to the electrical terminal through the guide rail 16. The wire harness is led out from the bottom of the wire harness tube 17 and can be connected to the test equipment.

[0025] A support platform 23 is fixedly installed in the area between the first positioning block 14 and the second positioning block 15. The support platform is used to place ceramic capacitors, and the upper surface of the support platform is a V-shaped groove structure. Figure 1 In the figure, mounting holes are provided on both sides of the support platform 23, which is fixed to the mounting platform 1 by bolts. The mounting platform 1 is an inverted U-shaped structure as a whole, with the upper surface for installation and the bottom for threading the wiring harness.

[0026] During the test, the capacitor is placed in the V-groove of the support table 23, and the electrical pin 10 of the first positioning block 14 is slid to a predetermined position and abutted against one side of the capacitor, and fixed with a positioning column, and then the spring 3 is used to make another electrical pin 10 abut against the other side of the capacitor to achieve fixation.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ceramic capacitor test fixture, characterized in that: It comprises a mounting platform (1), and a first positioning block (14) and a second positioning block (15) arranged on the surface of the mounting platform (1); The first positioning block (14) and the second positioning block (15) are arranged opposite to each other, and electrical ejector pins (9) are installed in the inner cavities of the first positioning block (14) and the second positioning block (15); The electrical ejector pin (9) in the first positioning block (14) is slidably connected to the first positioning block (14), and a positioning column (24) is threadedly connected to the upper end surface of the first positioning block (14), and the electrical ejector pin (9) inside is squeezed and fixed by the positioning column (24); One end of the electrical ejector pin (9) in the second positioning block (15) away from the first positioning block (14) is connected to a spring, and in a normal state, the spring pushes the electrical ejector pin (9) in the second positioning block (15) so that it tends to extend toward the first positioning block (14); A support platform (23) is fixedly installed in the area between the first positioning block (14) and the second positioning block (15); the support platform (23) is used to place a ceramic capacitor; and the upper surface of the support platform (23) is a V-shaped groove structure.

2. A ceramic capacitor test fixture according to claim 1, characterized in that: The rear end of the electrical ejector pin (9) in the first positioning block (14) is fixedly connected to a sliding rod (21), and the sliding rod (21) is exposed outside the first positioning block (14).

3. A ceramic capacitor test fixture according to claim 2, characterized in that: The rear end of the electric ejector pin (9) in the second positioning block (15) is fixedly connected to the limiting rod (5), and the limiting ring (11) is fixedly sleeved on the limiting rod (5). The end of the second positioning block (15) away from the first positioning block (14) is provided with a first guide plate (8) and a second guide plate (4) at intervals. The first guide plate (8) and the second guide plate (4) are both provided with through holes for the limiting rod (5) to pass through. The limiting rod (5) is sleeved with a spring (3), and the spring (3) is abutted between the limiting ring (11) and the second guide plate (4).

4. A ceramic capacitor test fixture according to claim 3, characterized in that: A guide rail (16) is fixedly arranged in the middle of the first positioning block (14) and the second positioning block (15); the guide rail (16) is slidably connected to the electrical ejector pin (9) and is electrically connected to the electrical terminal.

5. The ceramic capacitor test fixture according to claim 4, characterized in that: A wire harness tube (17) is fixedly mounted at the bottom of the guide rail (16); the wire harness tube (17) is fixed in a table hole of the mounting table (1) by a connector (19); the wire harness is fixed through the wire harness tube (17) and connected to an electrical terminal through the guide rail (16).

6. The ceramic capacitor test fixture according to claim 1, characterized in that: The electrical ejector pin (9) is a copper column structure, and a rubber sleeve (10) is sleeved on the outer surface of the copper column structure.

7. The ceramic capacitor test fixture according to claim 2, characterized in that: The first guide plate (8) and the second guide plate (4) are both fixed to the mounting platform (1) by a combination of bolts (6) and nuts (12), and the first positioning block (14) and the second positioning block (15) are fixed to the mounting platform (1) from the bottom by a screw structure.

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