Insulation voltage test on photoelectric coupler and test fixture thereof

Abstract

The utility model relates to an insulation withstand voltage test power -on device of photoelectric coupler and test fixture thereof, and the test fixture of insulation withstand voltage test of the photoelectric coupler includes power -on device and the mounting seat installed in power -on device, power -on device includes power supply box, one side of power supply box is import and export, and the side wall opposite to import and export is backplate, and the needle electrode is installed on the backplate, the needle electrode is provided with two, and two needle electrodes are connected with the wiring terminal of insulation withstand voltage tester respectively, the micro -switch is arranged in the power supply box, and the micro -switch is connected with insulation withstand voltage tester. The utility model discloses the insulation withstand voltage test power -on device of photoelectric coupler, and the inner end part of power supply box sets up the needle electrode and micro -switch connected with insulation withstand voltage tester, needs to push the mounting seat completely into power supply box, and the end surface of mounting seat triggers micro -switch, can only connect the circuit, starts insulation withstand voltage tester, and the safety degree is high.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for testing optocouplers, and in particular to a power-on device for testing the insulation withstand voltage of an optocoupler and its testing fixture. Background Technology

[0002] The insulation withstand voltage test involves placing the optocoupler component on a test fixture and using an insulation withstand voltage tester to conduct an energized test on the optocoupler. When the insulation withstand voltage tester supplies high voltage to the optocoupler, it is observed whether the optocoupler will break down (cause a short circuit).

[0003] An optocoupler consists of a main body and pins connected to both sides of the main body; the pin configuration varies depending on the application (see appendix). Figure 22 For example, Chinese patents CN222338288U - A lead frame and optocoupler for an optocoupler, and CN223007841U - An optocoupler, disclose two different types of optocouplers with different pin shapes. The fixtures used for insulation withstand voltage testing of optocouplers with different pin shapes are also different. Each fixture needs to be connected to the insulation withstand voltage tester before it can be used, which makes the preparation work more troublesome.

[0004] Therefore, there is a need for an auxiliary device for insulation withstand voltage testing that can be matched with multiple test mounts, and a matching test mount. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems by providing an insulation withstand voltage test power-on device and test fixture for an optocoupler.

[0006] The technical solution of this utility model is: a power-on device for testing the insulation withstand voltage of an optocoupler, the power-on device being connected to an insulation withstand voltage tester, including a power supply box; the power supply box is square, one side of the power supply box is an inlet and outlet, and the side wall opposite the inlet and outlet is a back plate; a pin electrode is installed on the upper part of the back plate, the pin electrode penetrating the side wall of the power supply box and pointing into the power supply box; two pin electrodes are provided, and the two pin electrodes are respectively connected to the terminals of the insulation withstand voltage tester by wires; A microswitch is installed inside the power supply box, fixed to the lower part of the back panel. The microswitch is connected to the insulation withstand voltage tester. The circuit of the insulation withstand voltage tester can only be connected after the microswitch is triggered, which greatly improves the safety of the insulation withstand voltage test procedure.

[0007] Preferably, the bottom of the inlet and outlet of the power supply box is sloped to facilitate the direct insertion of the mating mounting bracket into the power supply box.

[0008] Preferably, the power supply box is provided with guide ribs, which are perpendicular to the back plate; there are two guide ribs, which are fixed to the bottom of the side walls on both sides of the back plate. The mounting base is disposed between the two guide ribs. The mounting base can slide along the direction of the guide ribs, which facilitates the establishment of a connection between the power supply device and the mounting base.

[0009] Furthermore, the two guide ribs are designed with an outward-flaring flared shape at the ends near the inlet and outlet. This reduces the fitting precision between the mounting base and the power supply box, making it easier to directly push the mating mounting base into the power supply box.

[0010] A test fixture for an insulation withstand voltage test power-on device using the aforementioned optocoupler; the mounting base includes a square insulating base, the outline of which matches the width of the internal cavity of the power supply box; two guide ribs are respectively attached to the two sides of the insulating base. A test area is provided in the center of the top surface of the insulating base, and the optocoupler is installed in the test area; An end plate is vertically mounted at one end of the insulating base, on which two electrode connecting posts are fixedly mounted. These posts penetrate the end plate and extend vertically outwards. The electrode connecting posts are connected to the test area via wires. Electrode sockets are located at the ends of the electrode connecting posts away from the end plate, and these sockets are matched with two pin electrodes. As the mounting base slides along the guide ribs, the electrode sockets on the insulating base move closer to the pin electrodes, eventually inserting the two pin electrodes into their respective sockets, thus completing the circuit. This design prevents accidental contact with the fixture at the start of the insulation withstand voltage test, ensuring personnel safety.

[0011] Preferably, an end plate B is provided on the side of the insulating base opposite to end plate A, and end plate A and end plate B are arranged parallel to each other; a handle is provided on the outer side of end plate B. Using the handle allows the operator to pull out the entire fixture without touching the insulating base, and makes operation easier.

[0012] Preferably, the test area includes two opposing copper rails, which are parallel and spaced apart. The ends of the two copper rails are connected to two electrode connecting posts by wires. 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 respectively attached to the top of the two copper rails. The optocoupler is placed between the two copper rails in the test area, with its pins attached to the top of the two copper rails, forming a circuit together 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 pins to perform the insulation withstand voltage test. Multiple optocouplers can be placed side-by-side on the copper rails, and these optocouplers are connected in parallel, allowing for simultaneous insulation withstand voltage testing of multiple optocouplers.

[0013] Furthermore, 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 to prevent the optocoupler from slipping off the copper guide rail due to the overall tilting of the mounting base. 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.

[0014] Furthermore, a strip-shaped clamping block is provided in the center of the bottom surface of the connecting plate of the cover plate, and the bottom of the clamping block abuts 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 against the copper guide rail, ensuring that the optocoupler will not be misaligned when the mounting base slides, so as to ensure that the optocoupler can be powered on normally.

[0015] Furthermore, the copper guide rail is L-shaped, with several through holes at its bottom, and corresponding threaded blind holes at the bottom of the insulating base. Screws are fitted into the threaded blind holes, passing through the through holes at the bottom of the copper guide rail and threadedly connecting to the blind holes. The L-shaped copper guide rails are arranged opposite each other and fixed to the bottom of the insulating base with screws, resulting in simple installation and a stable structure.

[0016] Preferably, the test area is provided with a test socket, which is fixed on an insulating base; the test socket is fixed with several pin plug groups; each pin plug group includes two pin plugs arranged in parallel with relative intervals, and each pin plug has several pin sockets evenly distributed on it; the spacing between the corresponding pin sockets on the two pin plugs corresponds to the pin spacing of the optocoupler. The pin socket includes a metal spring and an insulating shell. The metal spring is vertically embedded in the insulating shell. An electrode is vertically mounted on the bottom of the metal spring. The electrode plates of several pin sockets in the pin connector are connected by a wire. The electrode plates at the bottom of several metal springs are connected by a single wire, enabling several optocouplers on the pin connector to be connected in parallel, providing a consistent voltage to all optocouplers and simultaneously performing insulation withstand voltage tests on all optocouplers. Two pin connectors are connected to two electrode connection posts respectively. The pins of the optocouplers are inserted into the pin sockets, with the metal spring abutting against the middle of the pins. The metal spring compresses the pins after insertion, preventing them from slipping out.

[0017] Connecting several test socket pins with corresponding wires can further increase the number of simultaneous tests by the optocoupler and accelerate the testing efficiency.

[0018] The electrode plates of adjacent pin socket groups are connected by corresponding wires.

[0019] The bottom of the insulating base is symmetrically provided with two wire grooves; the bottom of the electrode plate of the metal spring is located within the wire groove. The electrode plate does not extend beyond the wire groove to avoid contact between the electrode plate and external conductors, thus preventing leakage and ensuring personnel safety.

[0020] Two wire through holes are provided on the side of the insulating base near the end plate, and the wire through holes are connected to the wire groove.

[0021] Furthermore, the mounting base also includes a quick-release assembly; the quick-release assembly includes a horizontally arranged limiting plate, which is square and its outline matches the insulating base; the limiting plate has a square notch in the middle, which matches the pin connector; the square notch on the limiting plate allows the limiting plate to slide up and down along the pin connector, thereby limiting the position of the limiting plate.

[0022] The quick-release assembly also includes a connecting rod, which is positioned within a square notch in the limiting plate. Both ends of the connecting rod engage with the ends of the limiting plate. The connecting rod is square, and its width matches the gap between the two pin connectors. The top surface of the connecting rod is in contact with the bottom surface of the optocoupler body. Located in the gap between the two pin connectors and at the bottom of the optocoupler body, the connecting rod allows multiple optocouplers on it to be lifted simultaneously when the limiting plate is lifted upwards, enabling rapid disassembly of the optocouplers.

[0023] Furthermore, a square limiting groove is provided in the middle of both end plates of the insulating base; a square limiting block is fixedly provided in the middle of both ends of the limiting plate, and the limiting block is fitted in the limiting groove; the height of the limiting groove is greater than the thickness of the limiting block.

[0024] Setting a limit groove can limit the upward movement distance of the limit plate, preventing excessive force from throwing the optocoupler out.

[0025] The beneficial effects of this utility model are as follows: The power-on device for testing the insulation withstand voltage of the optocoupler of this utility model has the following advantages: 1. In this utility model, a needle electrode and a micro switch are provided at the inner end of the power supply box to connect with the insulation withstand voltage tester. The micro switch is triggered by the end face of the mounting base after the mounting base is fully pushed into the power supply box to connect the circuit and start the insulation withstand voltage tester, which has a high degree of safety.

[0026] 2. This utility model places the needle inside the power supply box, which can effectively prevent electric shock accidents.

[0027] The test fixture including the above-mentioned power-on device has the following advantages: 1. The test fixture of this utility model can perform insulation withstand voltage tests on optocouplers with various pin types, and various mounting bases can be used with power-on devices, making it quite flexible in use.

[0028] 2. The mounting bases in this utility model can all restrict the optocoupler into position, preventing misalignment during sliding and ensuring the stable conduct of insulation withstand voltage tests. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the power-on device for the insulation withstand voltage test of an optocoupler; Figure 2 yes Figure 1 AA section view; Figure 3 This is a circuit diagram of the power-on device for testing the insulation withstand voltage of the optocoupler of this utility model; Figure 4 This is a schematic diagram of the test fixture for testing the insulation withstand voltage of the optocoupler according to this utility model; Figure 5 yes Figure 4 Attached view; Figure 6 yes Figure 5 A magnified view of the I-shaped image; Figure 7 This is a schematic diagram of the mounting base in Embodiment 2 of this utility model. Figure 1 (The controller is not visible); Figure 8 This is a schematic diagram of the mounting base in Embodiment 2 of this utility model. Figure 2 (The controller is not visible); Figure 9 yes Figure 8 The front view; Figure 10 yes Figure 9 BB cross-sectional view; Figure 11 This is a schematic diagram of the cover plate in Embodiment 2; Figure 12 This is a schematic diagram of the mounting base in Embodiment 3 of this utility model (the handle is not shown). Figure 13 yes Figure 12 A bottom view; Figure 14 yes Figure 13 CC section view; Figure 15 yes Figure 13 DD sectional view; Figure 16 This is a schematic diagram of the pin connector structure in Embodiment 3; Figure 17 This is a schematic diagram of the metal spring sheet in Example 3; Figure 18 This is a schematic diagram of the mounting base in Embodiment 4 (the handle is not shown). Figure 19 yes Figure 18 Top view; Figure 20 yes Figure 19 DD sectional view; Figure 21 This is a structural schematic diagram of the quick-release component in Embodiment 4; Figure 22 This is a physical reference image of an optocoupler; Figure 23-25 This is a physical reference drawing of this utility model.

[0030] In the diagram: 00. Optocoupler body; 01. Pins; 1. Power supply box body; 11. Inlet / outlet; 12. Back plate; 13. Pin electrode; 131. Recessed groove; 14. Micro switch; 15. Guide rib; 2. Mounting base; 21. Insulating base; 211. End plate; 2111. Handle; 22. Test area; 221. Copper guide rail; 222. Vertical baffle; 223. Limiting protrusion; 224. Liner plate; 23. Cover plate; 231. Horizontal plate; 2311. Circular through hole; 2312. Mounting groove; 232. Connecting plate; 2321. Clamping block; 24. Electric... 241. Electrode connector, 25. Screw, 26. Wire, 311. Wire groove, 312. Limiting groove, 313. Wire through hole, 32. Pin connector, 321. Connecting fixing plate, 322. Pin socket, 3221. Insulating shell, 3222. Metal spring, 32221. Electrode plate, 33. Quick release assembly, 331. Limiting plate, 3311. Limiting block, 3312. Square notch, 332. Connecting rod, 333. Pin, 334. Transition plate, 335. Rotating seat. Detailed Implementation

[0031] Example 1: See Figure 1-3 A power-on device for testing the insulation withstand voltage of an optocoupler is disclosed. The power-on device is connected to an insulation withstand voltage tester and includes a power supply box 1. The power supply box 1 is square, with an inlet / outlet 11 on one side and a back plate 12 on the opposite sidewall of the inlet / outlet 11. A pin electrode 13 is mounted on the upper part of the back plate 12, penetrating the sidewall of the power supply box 1 and pointing into the power supply box 1. Two pin electrodes 13 are provided, and the two pin electrodes 13 are respectively connected to the terminals of the insulation withstand voltage tester by wires 26. The end of the needle electrode 13 is provided with a cross-shaped recessed groove 131.

[0032] A micro switch 14 is installed inside the power supply box 1. The micro switch 14 is fixed to the lower part of the back plate 12 and is connected to the insulation withstand voltage tester. The micro switch 14 needs to be triggered before the circuit of the insulation withstand voltage tester can be connected, which greatly improves the safety of the insulation withstand voltage test procedure.

[0033] The base plate at the inlet / outlet 11 of the power supply box 1 is designed as a slope. This facilitates the direct insertion of the matching mounting bracket 2 into the power supply box 1.

[0034] The power supply box 1 is provided with guide ribs 15, which are perpendicular to the back plate 12. There are two guide ribs 15, which are fixed to the bottom of the side walls on both sides of the back plate 12. The mounting base 2 is disposed between the two guide ribs 15. The mounting base 2 can slide along the direction of the guide ribs 15, which facilitates the establishment of a connection between the power supply device and the mounting base 2.

[0035] The two guide ribs 15 are designed with an outwardly flared horn shape at the ends near the inlet and outlet 11. This reduces the fitting precision between the mounting base 2 and the power supply box 1, making it easier to directly push the mating mounting base 2 into the power supply box 1.

[0036] The working principle of this embodiment is as follows: The output circuit of the insulation withstand voltage tester is connected to a normally open relay K, and the opening and closing of the relay is controlled by a low-voltage circuit. The micro switch 14 and the relay K are connected in series in the DC low-voltage circuit. When the micro switch 14 is triggered, the relay K is energized and its contacts are closed, and the output circuit of the insulation withstand voltage tester outputs voltage to the mounting base 2. When the micro switch 14 is not triggered, the contacts of the relay K are open, and the output circuit of the insulation withstand voltage tester cannot output voltage.

[0037] Example 2: See Figure 4-11 A test fixture including the power-on device for testing the insulation withstand voltage of the optocoupler as described in Embodiment 1. Mounting base 2 includes a square insulating base 21, the outline of which matches the width of the inner cavity of the power supply box 1; the two sides of the insulating base 21 are respectively attached to two guide ribs 15. A test area 22 is provided in the center of the top surface of the insulating base 21, and the optocoupler is installed in the test area 22; An end plate 211A is vertically mounted on one end of the insulating base 21. Two electrode connecting posts 24 are fixedly mounted on the end plate 211A, extending vertically outward through the end plate 211. The electrode connecting posts 24 are connected to the test area 22 by wires 26. An electrode socket 241 is mounted on the end of the electrode connecting post 24 away from the end plate 211A, and the two electrode sockets 241 are matched with two needle electrodes 13. When the mounting base 2 slides along the direction of the guide rib 15, the electrode sockets 241 on the insulating base 21 and the needle electrodes 13 move closer to each other, and finally the two needle electrodes 13 are inserted into the two electrode sockets 241 respectively, thereby connecting the circuit. This can prevent accidental contact with the fixture at the beginning of the insulation withstand voltage test and ensure personnel safety.

[0038] An end plate 211B is provided on the side of the insulating base 21 opposite to the end plate 211A. The end plates 211A and 211B are arranged parallel to each other. A handle 2111 is provided on the outer side of the end plate 211B. Using the handle 2111, the operator can pull out the entire fixture without touching the insulating base 21, and it is easier to operate.

[0039] Test area 22 includes two opposing copper rails 221, which are parallel and spaced apart. The ends of the two copper rails 221 are connected to two electrode connecting posts 24 by wires 26. The spacing between the two copper rails 221 corresponds to the size of the optocoupler body 00. The pins 01 on both sides of the optocoupler are respectively attached to the top of the two copper rails 221. When the optocoupler is placed between the two copper rails 221 in test area 22, with its pins 01 attached to the top of the two copper rails 221, it forms a circuit with the copper rails 221. When the terminals of the insulation withstand voltage tester are connected to the two copper rails 221, 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 221, and these optocouplers are connected in parallel to each other, allowing for simultaneous insulation withstand voltage testing of multiple optocouplers.

[0040] Vertical baffles 222 are provided at both ends of the copper guide rail 221. The top surface of the vertical baffles 222 is higher than the top of the copper guide rail 221. A vertical cylindrical limiting protrusion 223 is provided in the middle of the top surface of the vertical baffles 222. The vertical baffles 222 block both ends of the copper guide rail 221 to prevent the optocoupler from sliding off the copper guide rail 221 due to the overall tilt of the mounting base 2.

[0041] The test area 22 is topped with an I-shaped cover plate 23, comprising two horizontal plates 231 and a connecting plate 232 connecting the two horizontal plates 231 in the middle. The two horizontal plates 231 of the cover plate 23 rest on the top surface of the vertical baffle 222. A circular through hole 2311 is provided in the middle of the horizontal plate 231, which engages with a limiting protrusion 223 on the top surface of the vertical baffle 222. The engagement of the limiting protrusion 223 and the circular through hole 2311 positions the cover plate 23, ensuring that the cover plate 23 is stably placed on top of the vertical baffle 222 and the test area 22.

[0042] A mounting groove 2312 is provided in the middle of a horizontal plate 231. The opening of the mounting groove 2312 is perpendicular to the edge of the horizontal plate 231 and faces outward. The width of the mounting groove 2312 matches the diameter of the circular through hole 2311, and the mounting groove 2312 is connected to the circular through hole 2311. When installing the cover plate 23, the mounting groove 2312 can be first engaged with the limiting protrusion 223, and then the cover plate 23 can be laid flat so that the remaining circular through hole 2311 is engaged with the other limiting protrusion 223, thus reducing the difficulty of installing the cover plate 23.

[0043] A strip-shaped clamping block 2321 is provided in the middle of the bottom surface of the connecting plate 232 of the cover plate 23. The bottom of the clamping block 2321 abuts against the top surface of the main body 00 of the optocoupler. The clamping block 2321 at the bottom of the cover plate 23 can provide downward pressure on several optocouplers on the copper guide rail 221, pressing the lateral part of the optocoupler pin 01 tightly onto the copper guide rail 221, ensuring that the sliding of the mounting base 2 will not cause the optocoupler to be misaligned, so as to ensure that the optocoupler can be powered on normally.

[0044] The copper guide rail 221 is L-shaped, with several through holes at its bottom. Correspondingly, the bottom of the insulating base 21 has threaded blind holes. Screws 25 are fitted into these threaded blind holes, passing through the through holes at the bottom of the copper guide rail 221 and then threadedly connecting to the blind holes. The L-shaped copper guide rails 221 are arranged opposite each other and fixed to the bottom of the insulating base 21 using screws 25, resulting in simple installation and a stable structure.

[0045] A liner 224 is provided in the middle of the top surface of the bottom of the insulating base 21, and a copper guide rail 221 is fixed on the liner 224. The liner 224 is fixed to the bottom of the insulating base 21 by bolts, which penetrate vertically through the bottom surface of the bottom of the insulating base 21 and engage with the threaded bottom of the liner 224. Bolts and screws 25 are arranged alternately. The liner 224 between the copper guide rail 221 and the bottom of the insulating base 21 can enhance the insulation effect, facilitate processing, and reduce production costs.

[0046] The working process of this embodiment includes the following steps: ① Remove cover plate 23; 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 221, with the pins 01 on both sides corresponding to the copper rails 221. ③ Press the optocoupler Cover the cover plate 23, and press the clamping block 2321 at the bottom of the cover plate 23 onto the top surface of the optocoupler body 00; ④ Connecting the circuit Push the mounting base 2 into the power supply box 1, and the surface of the end plate 211A abuts against the micro switch 14. The two needle electrodes 13 are respectively inserted into the electrode sockets 241. ⑤ Start the insulation withstand voltage tester and perform the insulation withstand voltage test.

[0047] Example 3: See Figure 12-17 A test fixture including the power-on device for testing the insulation withstand voltage of the optocoupler as described in Embodiment 1. Mounting base 2 includes a square insulating base 21, the outline of which matches the width of the inner cavity of the power supply box 1; the two sides of the insulating base 21 are respectively attached to two guide ribs 15. A test area 22 is provided in the center of the top surface of the insulating base 21, and the optocoupler is installed in the test area 22; An end plate 211A is vertically mounted on one end of the insulating base 21. Two electrode connecting posts 24 are fixedly mounted on the end plate 211A, extending vertically outward through the end plate 211. The electrode connecting posts 24 are connected to the test area 22 by wires 26. An electrode socket 241 is mounted on the end of the electrode connecting post 24 away from the end plate 211A, and the two electrode sockets 241 are matched with two needle electrodes 13. When the mounting base 2 slides along the direction of the guide rib 15, the electrode sockets 241 on the insulating base 21 and the needle electrodes 13 move closer to each other, and finally the two needle electrodes 13 are inserted into the two electrode sockets 241 respectively, thereby connecting the circuit. This can prevent accidental contact with the fixture at the beginning of the insulation withstand voltage test and ensure personnel safety.

[0048] An end plate 211B is provided on the side of the insulating base 21 opposite to the end plate 211A. The end plates 211A and 211B are arranged parallel to each other. A handle 2111 is provided on the outer side of the end plate 211B. Using the handle 2111, the operator can pull out the entire fixture without touching the insulating base 21, and it is easier to operate.

[0049] Test area 22 is provided with a test socket, which is fixed on insulating base 21; the test socket is fixed with several pin plug-in groups 32; each pin plug-in group 32 includes two pin plug-in groups 32 arranged in parallel with relative intervals, and several pin sockets 322 are evenly distributed on each pin plug-in group 32; the spacing between the corresponding pin sockets 322 on the two pin plug-in groups 32 corresponds to the spacing of pins 01 of the optocoupler. The pin socket 322 includes a metal spring 3222 and an insulating shell 3221. The metal spring 3222 is vertically embedded in the insulating shell 3221. An electrode plate 32221 is vertically arranged at the bottom of the metal spring 3222. The electrode plates 32221 of several pin sockets 322 in the pin strip 32 are connected by a wire 26. The electrode plates 32221 at the bottom of several metal springs 3222 are connected by a wire 26, which can connect several optocouplers on the pin strip 32 in parallel, providing a consistent voltage to all optocouplers and performing insulation withstand voltage tests on all optocouplers. Two pin strips 32 are respectively connected to two electrode connecting posts 24. The pin 01 of the optocoupler is inserted into the pin socket 322, and the metal spring 3222 abuts against the middle of the pin 01. The metal spring 3222 can press the pin 01 after it is inserted into the optocoupler to prevent the pin 01 from slipping out.

[0050] Connecting several test socket pins 32 with wires 26 can further increase the number of simultaneous tests by the optocoupler and speed up the testing efficiency.

[0051] In this embodiment, two sets of pin connectors 32 are provided.

[0052] The electrode plates 32221 of adjacent pin groups 32 are connected by wires 26.

[0053] Two wire grooves 311 are symmetrically arranged at the bottom of the insulating base 21; the bottom of the electrode plate 32221 of the metal spring 3222 is located inside the wire groove 311. The electrode plate 32221 does not exceed the range of the wire groove 311 to avoid leakage due to contact between the electrode plate 32221 and the external conductor, thus ensuring personnel safety.

[0054] Two wire through holes 313 are provided on the side of the insulating base 21 near the end plate 211A, and the wire through holes 313 are connected to the wire groove 311.

[0055] A connecting fixing plate 321 is fixedly installed at the bottom of the test socket; the connecting fixing plate 321 is connected to the ends of two pin plugs 32 at the same time; there are two connecting fixing plates 321, which are respectively installed at both ends of the pin plugs 32; the connecting fixing plate 321 connects and fixes the two pin plugs 32 in each group together, so that each group of pin plugs 32 becomes a whole, which facilitates the disassembly and replacement of the whole.

[0056] The connecting fixing plate 321 has a through hole, and the insulating base 21 has a corresponding threaded hole. A positioning screw 25 is installed in the threaded hole, which passes through the through hole of the connecting fixing plate 321 and engages with the threaded hole. The screw 25 is used to fix each group of pins 32, thereby enhancing stability.

[0057] The working process of this embodiment includes the following steps: ① Install the optocoupler under test Arrange the optocouplers to be tested sequentially and insert them into the corresponding pin connectors 32. ② Connected circuit Push the mounting base 2 into the power supply box 1, and the surface of the end plate 211A abuts against the micro switch 14. The two needle electrodes 13 are respectively inserted into the electrode sockets 241. ③ Start the insulation withstand voltage tester and begin the insulation withstand voltage test.

[0058] Example 4: See Figure 18-21 Example 4 is basically the same as Example 3, and the similarities will not be repeated. The differences are: The mounting base 2 also includes a quick-release assembly 33; the quick-release assembly 33 includes a horizontally arranged limiting plate 331, which is square and its outline matches the insulating base 21; the limiting plate 331 has a square notch 3312 in the middle, which matches the pin connector 32; the square notch 3312 on the limiting plate 331 allows the limiting plate 331 to slide up and down along the pin connector 32, thereby limiting the position of the limiting plate 331.

[0059] The quick-release assembly 33 also includes a connecting rod 332, which is disposed within the square notch 3312 of the limiting plate 331. Both ends of the connecting rod 332 engage with the ends of the limiting plate 331. The connecting rod 332 is square, and its width matches the gap between the two pin connectors 32. The top surface of the connecting rod 332 is in contact with the bottom surface of the optocoupler body 00. Located in the gap between the two pin connectors 32 and at the bottom of the optocoupler body 00, the connecting rod 332 can lift multiple optocouplers on the connecting rod 332 together when the limiting plate 331 is lifted upwards, enabling rapid disassembly of the optocouplers.

[0060] The insulating base 21 has a square limiting groove 312 in the middle of both end plates 211; a square limiting block 3311 is fixedly provided in the middle of both ends of the limiting plate 331, and the limiting block 3311 is fitted in the limiting groove 312; the height of the limiting groove 312 is greater than the thickness of the limiting block 3311.

[0061] The limiting groove 312 can limit the upward movement distance of the limiting plate 331, preventing the optocoupler from being thrown out due to excessive force.

[0062] Both ends of the top surface of the limiting plate 331 are provided with rotating seats 335, each including a C-shaped protrusion. The two rotating seats 335 are arranged opposite each other. A pin 333 is provided between the two ends of the C-shaped protrusion, and the pin 333 is perpendicular to the center line of the limiting plate 331. The pin 333 passes through the end of the connecting rod 332. Both ends of the connecting rod 332 are respectively connected to the rotating seats 335 by the pin 333, which allows for sequential engagement of both ends of the connecting rod 332 during installation, reducing the installation difficulty of the connecting rod 332.

[0063] At least two connecting rods 332 are provided; several transition plates 334 are provided on the top surface of the limiting plate 331. The transition plates 334 are I-shaped, and their two sides correspond to the rotating seats 335 on their respective sides. The position of each transition plate 334 corresponds to the gap between two adjacent sets of pin connectors 32. Two pins 333 are provided on each side of the transition plate 334, and the two pins 333 are rotatably connected to the ends of the connecting rods 332 on both sides of the transition plate 334. By providing transition plates 334 in the middle of the limiting plate 331, a connecting rod 332 is divided into multiple parts, which can reduce the length of each connecting rod 332 and prevent the middle part of the connecting rod 332 from deflecting downwards, thus preventing the optocoupler in the middle of the connecting rod 332 from being unable to be lifted.

[0064] In this embodiment, one transition plate 334 is provided, and two connecting rods 332 are provided.

[0065] The working principle of this embodiment is as follows: A connecting plate 232 is set at the bottom of the optocoupler. When the optocoupler sample to be tested is installed, the pins 01 on both sides of the optocoupler body 00 will cross the connecting plate 232 and be inserted into the corresponding pin sockets 322. The connecting plate 232 is located below the optocoupler body 00. When the optocoupler needs to be removed, the connecting plate 232 can be lifted directly, and all the optocouplers above the connecting plate 232 can be lifted. This allows for direct collection and installation and testing of the next batch of optocoupler samples to be tested, greatly accelerating the testing efficiency.

Claims

1. A power-on device for testing the insulation withstand voltage of an optocoupler, connected to an insulation withstand voltage tester, characterized in that, Includes a power supply box; the power supply box is square, one side of the power supply box is an inlet and outlet, and the side wall opposite the inlet and outlet is a back plate; a needle electrode is installed on the upper part of the back plate, the needle electrode penetrates the side wall of the power supply box and points into the power supply box; two needle electrodes are provided, and the two needle electrodes are connected to the wiring terminals of the insulation withstand voltage tester by wires respectively. A micro switch is installed inside the power supply box. The micro switch is fixed to the lower part of the back plate and is connected to the insulation withstand voltage tester.

2. The power-on device for insulation withstand voltage testing of the optocoupler according to claim 1, characterized in that: The bottom of the power supply box's inlet and outlet is designed as a slope.

3. The power-on device for insulation withstand voltage testing of the optocoupler according to claim 1, characterized in that: The power supply box is provided with guide ribs, which are perpendicular to the back plate; there are two guide ribs, which are fixed to the bottom of the side walls on both sides of the back plate.

4. The power-on device for insulation withstand voltage testing of the optocoupler according to claim 3, characterized in that: The two guide ribs are designed with an outward-flaring flared shape at the ends near the inlet and outlet.

5. A test fixture comprising an insulation withstand voltage test power-on device for an optocoupler as described in claim 1, characterized in that: It also includes an optocoupler test mounting base, which is horizontally slidably mounted inside the power supply box. The mounting base includes a square insulating base, the outline of which matches the width of the internal cavity of the power supply box; a test area is provided in the center of the top surface of the insulating base, and the optocoupler is installed in the test area; An end plate is vertically installed at one end of the insulating base. Two electrode connection posts are fixedly installed on the end plate. The electrode connection posts penetrate the end plate and extend vertically outward. The electrode connection posts are connected to the test area by wires. An electrode socket is provided at the end of the electrode connection post away from the end plate, and the two electrode sockets are matched with two needle electrodes.

6. The test fixture according to claim 5, characterized in that: An end plate B is provided on the side of the insulating base opposite to end plate A, and end plate A and end plate B are arranged parallel to each other; a handle is provided on the outer side of end plate B.

7. The test fixture according to claim 5, characterized in that: The test area includes two copper rails arranged opposite each other, with the two copper rails parallel and spaced apart; the ends of the two copper rails are respectively connected to two electrode connecting posts by wires; the gap between the two copper rails corresponds to the main body size of the optocoupler; the pins on both sides of the optocoupler are respectively fastened to the top of the two copper rails.

8. The test fixture according to claim 7, characterized in that: Both ends of the copper guide rail are provided with vertical baffles, the top surface of the vertical baffles is higher than the top of the copper guide rail; a vertical cylindrical limiting protrusion is provided in the middle of the top surface of the vertical baffles. The test area is provided with an I-shaped cover plate at the top, including two horizontal plates and a connecting plate connected 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.

9. The test fixture according to claim 5, characterized in that: The test area is equipped with a test socket, which is fixed on an insulating base; the test socket is fixed with several pin pin groups; each pin pin group includes two pin pins arranged in parallel with relative spacing, and each pin pin has several pin sockets evenly distributed on it; the spacing between the corresponding pin sockets on the two pin pins corresponds to the pin spacing of the optocoupler. The pin socket includes a metal spring, and an electrode is vertically mounted on the bottom of the metal spring; the electrode plates of several pin sockets in the pin bar are connected by wires; the two pin bars are respectively connected to two electrode connection posts; the pins of the optocoupler are inserted into the pin sockets, and the metal spring abuts against the middle of the pins.

10. The test fixture according to claim 9, characterized in that: The mounting base also includes a quick-release assembly; the quick-release assembly includes a horizontally positioned limiting plate, which is square and whose outline matches the insulating base; the limiting plate has a square notch in the middle, which matches the pin connector. The quick-release assembly also includes a connecting rod, which is set in the square notch of the limiting plate, and the two ends of the connecting rod are respectively engaged with the two ends of the limiting plate; the connecting rod is square, and the width of the connecting rod matches the gap between the two pin connectors; the top surface of the connecting rod is in contact with the bottom surface of the optocoupler body.

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