Insulation voltage test mounting base for photoelectric coupler with bent pins

Abstract

This utility model relates to an insulation withstand voltage test mounting base for a bent-pin optocoupler. The mounting base includes an insulating base plate with a test area in the center of its top surface. This test area includes two opposing copper rails, arranged parallel and spaced apart. The ends of the two copper rails are connected to the terminals of a testing device. The spacing between the two copper rails corresponds to the main dimensions of the optocoupler. The pins on both sides of the optocoupler overlap the tops of the two copper rails. This utility model's bent-pin optocoupler insulation withstand voltage test mounting base, with its two parallel copper rails spaced apart, allows for simultaneous insulation withstand voltage testing of multiple optocouplers by connecting the pins of the optocoupler to the terminals of an insulation withstand voltage tester after the copper rails are connected. This significantly improves testing efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for insulation withstand voltage testing, and in particular to an insulation withstand voltage testing mounting base for an optocoupler with bent leads. Background Technology

[0002] An optocoupler is a semiconductor module that uses light as a medium to transmit electrical signals. It consists of a main body and several pins distributed on both sides of the main body. After several batches of optocouplers are manufactured, they need to be sampled for inspection. Only after passing the withstand voltage test can they be packaged and shipped.

[0003] The withstand voltage test of the sampled optocouplers involves connecting the pins on both sides of the sample to the terminals on an insulation withstand voltage tester, and observing whether the optocoupler is broken down (short-circuited) under a momentary high voltage environment. Existing technology involves mounting the pins of the semiconductor module on a socket with a fixed testing station, such as Chinese Patent CN223320524U - Simple Insulation Withstand Voltage Test Device, application date: 2024.10.15. This type of test device can only be used for semiconductor modules with straight pins, but it cannot be used for optocouplers with right-angled bent pins. Furthermore, the limited testing stations of this device make it unsuitable for simultaneously testing the insulation withstand voltage of multiple optocouplers. Since the semiconductor modules in this test device are connected in series, if a preceding semiconductor module is short-circuited, the overall circuit will not be interrupted, making it impossible to accurately remove it.

[0004] Therefore, equipment is needed to perform insulation withstand voltage tests on optocouplers with multiple bent pins. Utility Model Content

[0005] The purpose of this invention is to solve the above problems and provide an insulation withstand voltage test mounting base for an optocoupler with bent leads.

[0006] The technical solution of this utility model is: an insulation withstand voltage test mounting base for an optocoupler with bent leads, including an insulating base plate, with a test area set in the center of the top surface of the insulating base plate; the test area includes two oppositely arranged copper rails, which are parallel and spaced apart; the ends of the two copper rails are respectively connected to the terminals of an insulation withstand voltage tester; the spacing between the two copper rails corresponds to the main body size of the optocoupler; the leads on both sides of the optocoupler overlap the tops of the two copper rails. When the optocoupler is placed between the two copper rails in the test area, with its leads overlapping the tops of the two copper rails, it forms a circuit with the copper rails; when the terminals of the insulation withstand voltage tester are connected to the two copper rails, the optocoupler can be powered on through the leads to perform an insulation withstand voltage test; multiple optocouplers can be placed side-by-side on the copper rails, and these optocouplers are connected in parallel, enabling simultaneous insulation withstand voltage testing of multiple optocouplers.

[0007] Preferably, vertical baffles are provided at both ends of the copper guide rail, with the top surface of the vertical baffles higher than the top of the copper guide rail. The vertical baffles block both ends of the copper guide rail, preventing the optocoupler from slipping off the copper guide rail due to the overall tilting of the mounting base.

[0008] Furthermore, a vertical cylindrical limiting protrusion is provided in the middle of the top surface of the vertical baffle; The test area is topped with an I-shaped cover plate, comprising two horizontal plates and a connecting plate between the two horizontal plates. The two horizontal plates rest on the top surface of a vertical baffle. A circular through hole is provided in the middle of the horizontal plates, which engages with a limiting protrusion on the top surface of the vertical baffle. The engagement of the limiting protrusion and the circular through hole positions the cover plate, ensuring its stable placement on top of the vertical baffle and the test area.

[0009] Furthermore, a limiting groove is provided in the middle of a horizontal plate, with the opening of the groove perpendicular to the edge of the horizontal plate and facing outwards. The width of the limiting groove matches the diameter of the circular through hole, and the limiting groove and the circular through hole are connected. When installing the cover plate, the limiting groove and the limiting protrusion can be engaged first, and then the cover plate can be laid flat so that the remaining circular through hole engages with the other limiting protrusion, reducing the difficulty of installing the cover plate.

[0010] Furthermore, a strip-shaped clamping block is provided in the middle of the bottom surface of the cover plate, with the bottom of the clamping block abutting against the top surface of the optocoupler body. The clamping block at the bottom of the cover plate can provide downward pressure on several optocouplers on the copper guide rail, pressing the lateral part of the optocoupler pins tightly onto the copper guide rail, ensuring that the optocoupler can be powered on normally.

[0011] Preferably, a tail plate is vertically installed at the end of the insulating base plate, and two electrode connection posts are installed on the tail plate. The electrode connection posts penetrate horizontally through the tail plate, and the ends of the electrode connection posts are connected to the copper guide rail by corresponding wires. Using electrode connection posts to connect the mounting base to the power supply facilitates power connection and disconnection, and makes it portable.

[0012] Preferably, the copper guide rail is L-shaped, with several through holes at its bottom and corresponding threaded blind holes on the insulating base plate. Screws are fitted into the threaded blind holes, passing through the through holes at the bottom of the copper guide rail and threadedly connected to the blind holes. The L-shaped copper guide rails are arranged opposite each other and fixed to the insulating base plate with screws, resulting in simple installation and a stable structure.

[0013] Both ends of the conductor are connected to a ring-shaped terminal; after the screw passes through the ring-shaped terminal and is tightened, the ring-shaped terminal can be pressed against the copper guide rail to ensure a stable power supply connection; the ring-shaped terminal facilitates the connection, disassembly and replacement of components of the device.

[0014] Furthermore, a liner is provided in the center of the top surface of the insulating base plate, and a copper guide rail is fixed to the liner. The liner is fixed to the insulating base plate with bolts, which penetrate vertically through the bottom of the insulating base plate and engage with the threaded bottom of the liner. Bolts and screws are arranged alternately. The liner between the copper guide rail and the insulating base plate enhances the insulation effect, facilitates processing, and reduces production costs.

[0015] The beneficial effects of this utility model are as follows: The insulation withstand voltage test mounting base for the bent-pin optocoupler of this utility model has the following advantages: 1. In this utility model, two copper guide rails are arranged parallel to each other at a relatively interval. After the pins of the optocoupler are connected to the top of the copper guide rails, the wiring terminals of the insulation withstand voltage tester are connected to the copper guide rails. This allows for simultaneous insulation withstand voltage testing of multiple optocouplers, thus accelerating the testing efficiency.

[0016] 2. The copper guide rail in this utility model is provided with a cover plate on the top, which can protect personnel during insulation withstand voltage testing and prevent electric shock from contact between the human body and the copper guide rail. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the insulation withstand voltage test mounting base for the bent-pin optocoupler of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the insulation withstand voltage test mounting base for the bent-pin optocoupler of this utility model. Figure 2 (Remove the cover plate); Figure 3 yes Figure 1 Side view; Figure 4 yes Figure 3 AA section view; Figure 5 This is a structural schematic diagram of the cover plate; Figure 6 This is a schematic diagram of the protective casing; Figure 7 This is a schematic diagram of the insulation withstand voltage test mounting base for the bent-pin optocoupler in Embodiment 2 of this utility model.

[0018] In the diagram: 00. Optocoupler body; 01. Pins; 1. Insulating base plate; 11. Tail plate; 2. Test area; 21. Copper guide rail; 22. Vertical baffle; 23. Limiting protrusion; 24. Liner plate. 3. Cover plate, 31. Horizontal plate, 311. Circular through hole, 312. Limiting groove, 32. Connecting plate, 321. Clamping block, 4. Electrode connecting post, 5. Screw, 6. Wire, 7. Protective housing. Detailed Implementation

[0019] Example 1: See Figure 1-5 An insulation withstand voltage test mounting base for a bent-pin optocoupler includes an insulating base plate 1, with a test area 2 located in the center of the top surface of the insulating base plate 1. The insulating base plate 1 can be made of insulating materials such as resin, rubber, or plastic. The test area 2 includes two copper guide rails 21 arranged opposite each other, with the two copper guide rails 21 arranged parallel and spaced apart. The ends of the two copper guide rails 21 are respectively connected to the terminals of an insulation withstand voltage tester. The spacing between the two copper guide rails 21 corresponds to the size of the main body 00 of the optocoupler. The pins 01 on both sides of the optocoupler overlap the tops of the two copper guide rails 21. The optocoupler is placed between two copper rails 21 in test area 2, with its pins 01 on both sides overlapping the tops of the two copper rails 21 to form a circuit. When the terminals of the insulation withstand voltage tester are connected to the two copper rails 21, the optocoupler can be powered on through the pins 01 to perform the insulation withstand voltage test. Multiple optocouplers can be placed side by side on the copper rails 21, and these optocouplers are connected in parallel to each other, so that the insulation withstand voltage test can be performed on multiple optocouplers at the same time.

[0020] Vertical baffles 22 are provided at both ends of the copper guide rail 21. The two vertical baffles 22 are at the same height, and the top surface of the vertical baffles 22 is higher than the top of the copper guide rail 21. The vertical baffles 22 block both ends of the copper guide rail 21 to prevent the optocoupler from sliding off the copper guide rail 21 due to the overall tilt of the mounting base.

[0021] A vertical cylindrical limiting protrusion 23 is provided in the middle of the top surface of the vertical baffle 22; The test area 2 is topped with an I-shaped cover plate 3, comprising two horizontal plates 31 and a connecting plate 32 linking the two horizontal plates 31. The two horizontal plates 31 of the cover plate 3 rest on the top surface of the vertical baffle 22. A circular through hole 311 is provided in the middle of the horizontal plates 31, which engages with a limiting protrusion 23 on the top surface of the vertical baffle 22. The engagement of the limiting protrusion 23 with the circular through hole 311 positions the cover plate 3, ensuring that the cover plate 3 is stably placed on top of the vertical baffle 22 and the test area 2.

[0022] A limiting groove 312 is provided in the middle of a horizontal plate 31. The opening of the limiting groove 312 is perpendicular to the edge of the horizontal plate 31 and faces outward. The width of the limiting groove 312 matches the diameter of the circular through hole 311, and the limiting groove 312 is connected to the circular through hole 311. When installing the cover plate 3, the cover plate 3 can be tilted first to establish a mating relationship between the limiting groove 312 and the limiting protrusion 23. Then, the cover plate 3 can be laid flat so that the remaining circular through hole 311 and the other limiting protrusion 23 are properly mated. This reduces the difficulty of installing the cover plate 3.

[0023] A strip-shaped clamping block 321 is provided in the middle of the bottom surface of the connecting plate 32 of the cover plate 3. The bottom of the clamping block 321 abuts against the top surface of the main body 00 of the optocoupler. The clamping block 321 at the bottom of the cover plate 3 can provide downward pressure on several optocouplers on the copper guide rail 21, pressing the lateral part of the optocoupler pin 01 tightly onto the copper guide rail 21, ensuring that the optocoupler can be powered on normally.

[0024] An insulating base plate 1 has a vertically mounted tail plate 11 at one end. Two electrode connecting posts 4 are mounted on the tail plate 11, horizontally penetrating it. The ends of the electrode connecting posts 4 are connected to the copper guide rail 21 via wires 6. Using the electrode connecting posts 4 to connect the mounting base to the power supply facilitates power connection and disconnection, and provides portability.

[0025] The copper guide rail 21 is L-shaped, with several through holes at its bottom. Correspondingly, threaded blind holes are provided on the insulating base plate 1. Screws 5 are fitted into the threaded blind holes, passing through the through holes at the bottom of the copper guide rail 21 and then threadedly connected to the threaded blind holes. The L-shaped copper guide rails 21 are arranged opposite each other and fixed to the insulating base plate 1 using screws 5, resulting in simple installation and a stable structure.

[0026] Both ends of the conductor 6 are connected to a ring-shaped terminal; the screw 5 passes through the ring-shaped terminal and is tightened to press the ring-shaped terminal onto the copper rail 21 for stable power supply connection; the ring-shaped terminal facilitates the connection, disassembly and replacement of the device and its components.

[0027] A liner 24 is provided in the middle of the top surface of the insulating base plate 1, and a copper guide rail 21 is fixed on the liner 24. The liner 24 is fixed to the insulating base plate 1 by bolts, with the bolts penetrating vertically through the bottom surface of the insulating base plate 1 and engaging with the threaded bottom of the liner 24. Bolts and screws 5 are arranged alternately. The liner 24 between the copper guide rail 21 and the insulating base plate 1 can enhance the insulation effect, facilitate processing, and reduce production costs.

[0028] The working process of this embodiment includes the following steps: ① Remove cover plate 3; ② Place the optocoupler sample to be tested Take several optocoupler samples to be tested and arrange them in the same direction between two copper rails 21, with the pins 01 on both sides corresponding to the copper rails 21. ③ Press the optocoupler Cover the cover plate 3, and press the clamping block 321 at the bottom of the cover plate 3 onto the top surface of the optocoupler body 00; ④ Connecting the circuit The two electrode connecting posts 4 on the tail plate 11 are respectively connected to the wiring terminals of the insulation withstand voltage tester; ⑤ Start the insulation withstand voltage tester and perform the insulation withstand voltage test.

[0029] Example 2: See Figure 6-7 Example 2 is basically the same as Example 1, and the similarities will not be repeated. The difference is that a U-shaped protective shell 7 is provided on the outside of the insulating base plate 1. The protective shell 7 is square and is placed upside down on the insulating base plate 1. The protective shell 7 separates the test area 2 above the insulating base plate 1 from the outside world to avoid electric shock and ensure personnel safety.

[0030] In the above embodiments, the copper guide rail 21 can be replaced with a guide rail made of aluminum alloy or other materials.

Claims

1. A mounting base for testing the insulation withstand voltage of a bent-pin optocoupler, characterized in that, The device includes an insulating base plate, with a test area located in the center of its top surface. This test area includes two opposing copper rails, which are parallel and spaced apart. The ends of the two copper rails are connected to the terminals of an insulation withstand voltage tester. The spacing between the two copper rails corresponds to the main body size of the optocoupler. The pins on both sides of the optocoupler are attached to the top of the two copper rails.

2. The insulation withstand voltage test mounting base for the bent-pin optocoupler according to claim 1, characterized in that: Both ends of the copper guide rail are equipped with vertical baffles, and the top surface of the vertical baffles is higher than the top of the copper guide rail.

3. The insulation withstand voltage test mounting base for the bent-pin optocoupler according to claim 2, characterized in that: A vertical cylindrical limiting protrusion is provided in the middle of the top surface of the vertical baffle; The test area is provided with an I-shaped cover plate at the top, including two horizontal plates and a connecting plate in the middle of the two horizontal plates; the two horizontal plates of the cover plate rest on the top surface of the vertical baffle; a circular through hole is provided in the middle of the horizontal plate, which cooperates with the limiting protrusion on the top surface of the vertical baffle.

4. The insulation withstand voltage test mounting base for the bent-pin optocoupler according to claim 3, characterized in that: A limiting groove is provided in the middle of a horizontal plate, and the opening of the limiting groove is perpendicular to the edge of the horizontal plate and faces outward; the width of the limiting groove matches the diameter of the circular through hole, and the limiting groove is connected to the circular through hole.

5. The insulation withstand voltage test mounting base for the bent-pin optocoupler according to claim 3, characterized in that: A strip-shaped clamping block is provided in the middle of the bottom surface of the cover plate, and the bottom of the clamping block abuts against the top surface of the main body of the optocoupler.

6. The insulation withstand voltage test mounting base for the bent-pin optocoupler according to claim 1, characterized in that: A tail plate is vertically installed at the end of the insulating base plate. Two electrode connecting posts are installed on the tail plate. The electrode connecting posts penetrate the tail plate horizontally. The ends of the electrode connecting posts are connected to the copper guide rail by corresponding wires.

7. The insulation withstand voltage test mounting base for the bent-pin optocoupler according to claim 1, characterized in that: The copper guide rail is L-shaped, with several through holes at its bottom and corresponding threaded blind holes on the insulating base plate. Screws are fitted into the threaded blind holes, and the screws pass through the through holes at the bottom of the copper guide rail and are threadedly connected to the threaded blind holes.

8. The insulation withstand voltage test mounting base for the bent-pin optocoupler according to claim 7, characterized in that: A liner is provided in the middle of the top surface of the insulating base plate, and a copper guide rail is fixed on the liner. The liner is fixed to the insulating base plate with bolts. The bolts penetrate vertically through the bottom surface of the insulating base plate and are threaded into the bottom of the liner. The bolts and screws are arranged alternately.

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