A high-voltage test fixture

Abstract

This application provides a high-voltage testing fixture, including: a housing, a high-voltage plate, a movable plate, and a drive assembly. The high-voltage plate is disposed on the housing, and has multiple high-voltage input pins and multiple high-voltage output pins. The high-voltage input pins are used to electrically connect to the high-voltage interface of the testing equipment, and the high-voltage output pins are used to electrically connect to the test piece. The movable plate is disposed on the housing, and the drive assembly is disposed on the housing. The drive assembly is kinetically connected to the movable plate to drive the movable plate to reciprocate along the thickness direction of the high-voltage plate. When the movable plate moves to one side of the high-voltage plate, it connects the corresponding high-voltage input pins and high-voltage output pins, enabling the testing process of the test piece. This high-voltage testing fixture can achieve reliable connection and disconnection of high voltage, significantly improving the accuracy and stability of the test.

Description

Technical Field

[0001] This application relates to the field of test fixture technology, specifically to a high-voltage test fixture. Background Technology

[0002] High-voltage test fixtures are auxiliary devices used to perform high-voltage tests on test pieces, such as electronic components or equipment. In related technologies, high-voltage test fixtures are used in conjunction with test equipment. The high-voltage test fixture is used to connect or disconnect the circuit between the test equipment and the test piece. High-voltage test fixtures use high-voltage relays to control the circuit's on / off state. High-voltage relays are expensive, bulky, have weak current-carrying capacity, and are easily damaged, resulting in decreased fixture reliability and high fixture costs.

[0003] In view of the above, this application is hereby submitted. Utility Model Content

[0004] To address one of the aforementioned technical deficiencies, this application provides a high-voltage testing fixture.

[0005] The present invention adopts the following technical solution:

[0006] A high-voltage testing fixture, comprising:

[0007] case;

[0008] A high-voltage board is disposed on the housing. The high-voltage board is provided with multiple high-voltage input pins and multiple high-voltage output pins. The high-voltage input pins are used to electrically connect to the high-voltage interface of the test equipment, and the high-voltage output pins are used to electrically connect to the test piece.

[0009] A movable plate, which is disposed on the housing;

[0010] A drive assembly is disposed on the housing and is connected to the movable plate to drive the movable plate to reciprocate along the thickness direction of the high-pressure plate.

[0011] When the movable plate moves to one side of the high voltage plate, the movable plate connects the corresponding high voltage input pins and high voltage output pins.

[0012] Optionally, the high-voltage board includes a high-voltage board body and a high-voltage circuit board;

[0013] The high-voltage board body is disposed on the housing, the high-voltage circuit board is disposed on the high-voltage board body, the high-voltage circuit board is provided with the high-voltage input pin and the high-voltage output pin, and the high-voltage input pin and the high-voltage output pin penetrate the high-voltage board body;

[0014] The high-voltage wires of the high-voltage interfaces of each connected test equipment are connected to the high-voltage input pins;

[0015] The high-voltage wires of each connection test piece are electrically connected to the high-voltage output pin.

[0016] Optionally, the movable plate includes a movable plate body and a movable circuit board;

[0017] The movable plate body is movably disposed on the housing;

[0018] The movable circuit board is disposed on the side of the movable plate body away from the high voltage plate. Multiple conductors are disposed on the movable circuit board, and a clearance hole is disposed on the movable plate body corresponding to each conductor.

[0019] When the movable plate moves to one side of the high voltage plate, the high voltage input pin and the high voltage output pin can pass through the corresponding clearance hole and abut against the corresponding conductor, and each of the conductors conducts the respective high voltage input pin and high voltage output pin.

[0020] Optionally, the high-voltage test fixture also includes a low-voltage plate, which is disposed on the housing. The low-voltage plate and the high-voltage plate are spaced apart. The low-voltage plate is provided with a plurality of low-voltage input pins and low-voltage output pins.

[0021] The low-voltage input pin is used to connect to the low-voltage interface of the test equipment, and the low-voltage output pin is used to electrically connect to the test piece.

[0022] The drive assembly can drive the movable plate to move to one side of the low-voltage plate, so that the movable plate can conduct the corresponding low-voltage input pins and low-voltage output pins.

[0023] Optionally, the low-voltage board includes a low-voltage board body and a low-voltage circuit board. The low-voltage board body is disposed on the housing, and the low-voltage circuit board is disposed on the low-voltage board body. The low-voltage circuit board is provided with low-voltage input pins and low-voltage output pins, which pass through the low-voltage board body.

[0024] The low-voltage lines of the low-voltage interfaces of each connected test device are electrically connected to the low-voltage input pins;

[0025] The low-voltage lines of each connection test piece are electrically connected to the low-voltage output pin.

[0026] Optionally, the drive component includes a servo motor;

[0027] The servo motor has a servo motor body and a rocker arm;

[0028] The servo motor body is connected to the housing, and the rocker arm is connected to the movable plate to drive the movable plate to reciprocate along the direction perpendicular to the thick bottom of the high-pressure plate.

[0029] Optionally, mating plates are provided on both sides of the movable plate;

[0030] The mating plate is provided with a sliding groove, which extends perpendicularly to the housing;

[0031] The rocker arm is provided with an insert at its end, and the insert is inserted into the groove.

[0032] During the movement of the movable plate driven by the rocker arm, the insert slides along the groove.

[0033] Optionally, the high-voltage test fixture includes two servo motors;

[0034] The two servo motors are respectively located on both sides of the movable plate;

[0035] A matching plate is provided on each side of the movable plate;

[0036] The two servo motors are respectively engaged with the corresponding mating plates to drive the movable plates to move.

[0037] Optionally, the movable plate is provided with a clearance notch to avoid the servo motor.

[0038] Optional features include guide rods;

[0039] The guide rod is disposed on the housing;

[0040] The movable plate is provided with a guide hole, and the guide rod is disposed through the guide hole.

[0041] By adopting the above technical solution, this application has the following beneficial effects:

[0042] The high-voltage test fixture of this application enables reliable connection and disconnection of high voltage, significantly improving the accuracy and stability of the test. Attached Figure Description

[0043] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0044] Figure 1 This illustration shows a schematic diagram of the external structure of the high-voltage testing fixture provided in an embodiment of this application;

[0045] Figure 2 This diagram shows the internal structure of the high-voltage testing fixture provided in an embodiment of this application.

[0046] Figure 3 This diagram shows a partial structural schematic of the high-voltage testing fixture provided in an embodiment of this application.

[0047] In the diagram: 1. Housing; 11. Lower housing; 12. Upper cover; 2. High voltage plate; 21. High voltage input pin; 22. High voltage output pin; 3. Movable plate; 31. Mating plate; 311. Slide groove; 32. Clearance notch; 4. Drive assembly; 41. Servo body; 42. Rocker arm; 43. Embedded part; 5. Low voltage plate; 51. Low voltage input pin; 52. Low voltage output pin; 6. Guide rod. Detailed Implementation

[0048] like Figures 1 to 3 As shown in the illustration, this application provides a high-voltage testing fixture, comprising: a housing 1, a high-voltage plate 2, a movable plate 3, and a driving assembly 4. The high-voltage plate 2 is disposed on the housing 1, and has multiple high-voltage input pins 21 and multiple high-voltage output pins 22. The high-voltage input pins 21 are used to electrically connect to the high-voltage interface of the testing equipment, and the high-voltage output pins 22 are used to electrically connect to the test piece. The movable plate 3 is disposed on the housing 1. The driving assembly 4 is disposed on the housing 1 and is drively connected to the movable plate 3 to drive the movable plate 3 to reciprocate along the thickness direction of the high-voltage plate 2. When the movable plate 3 moves to one side of the high-voltage plate 2, the movable plate 3 conducts the corresponding high-voltage input pins 21 and high-voltage output pins 22, thereby connecting the circuit between the testing equipment and the test piece to realize high-voltage testing of the test piece. When the test ends, the driving assembly 4 drives the movable plate 3 to move away from the high-voltage plate 2, causing the high-voltage input pins 21 and high-voltage output pins 22 to disconnect.

[0049] The high-voltage test fixture of this application has a mechanical control structure, which can reliably connect and disconnect high voltage, significantly improving the accuracy and stability of the test. The high-voltage input pin 21 and high-voltage output pin 22 are relatively large in size. The circuit of the high-voltage input pin 21 and high-voltage output pin 22 is connected through the movable plate 3, which has strong current carrying capacity, good durability, and high reliability.

[0050] In some possible implementations, the high-voltage board 2 includes a high-voltage board body and a high-voltage circuit board. The high-voltage board body is disposed on the housing 1, and the high-voltage circuit board is disposed on the high-voltage board body. The high-voltage circuit board is provided with high-voltage input pin 21 and high-voltage output pin 22. The high-voltage input pin 21 and high-voltage output pin 22 pass through the high-voltage board body. The high-voltage lines of each high-voltage interface connecting the test equipment are connected to the high-voltage input pin 21, and the high-voltage lines of each test piece are electrically connected to the high-voltage output pin 22.

[0051] High-voltage wires can be directly soldered to the corresponding high-voltage pins, and high-voltage boxes can also be soldered to high-voltage circuit boards, connected electrically through conductors on the high-voltage circuit board and high-voltage pins.

[0052] Among them, each high-voltage pin (high-voltage input pin and high-voltage output pin) can be treated with special processes such as enhanced insulation and high voltage resistance, so as to have the ability to withstand high-voltage environment and provide a solid guarantee for the safety and reliability of the testing process.

[0053] The high-voltage pins can be wrapped with high-voltage resistant insulating materials such as epoxy resin, and the internal conductors are made of high-strength alloys capable of withstanding 3kV high voltage. The bottom of the pins can be firmly connected to the high-voltage line by welding or crimping to ensure reliable conduction under high-voltage conditions.

[0054] In this application, the housing 1 can be made of insulating and robust engineering plastic material, which can not only protect the internal structure from external physical interference and damage, but also provide necessary protection for operators and ensure operational safety.

[0055] In some possible implementations, the movable plate 3 includes a movable plate body and a movable circuit board. The movable plate body is movably disposed on the housing 1, and the movable circuit board is disposed on the side of the movable plate body away from the high voltage plate 2. The movable circuit board is provided with multiple conductors, some of which are electrically connected and some of which are isolated. The movable plate body is provided with clearance holes corresponding to each conductor. When the movable plate 3 moves to one side of the high voltage plate 2, the high voltage input pin 21 and the high voltage output pin 22 can pass through the corresponding clearance holes and abut against the corresponding conductors. Each conductor conducts the connection between the corresponding high voltage input pin 21 and the high voltage output pin 22.

[0056] The conductors on the movable circuit board can be metal points or metal blocks, arranged in multiple rows and columns. The circuit board can be grouped into sets of four, with each pair of conductors electrically connected. Similarly, the high-voltage pins on the high-voltage board are arranged in multiple rows and columns, with each group consisting of two high-voltage input pins and two high-voltage output pins. Within each group, the two high-voltage input pins are connected to the positive and negative terminals of the testing equipment, respectively, while the two high-voltage output pins are connected to the test piece. When a group of pins touches a set of conductors, the two electrically connected conductors link one high-voltage input pin to one high-voltage output pin, and the other two connected conductors link the other high-voltage input pin to the other high-voltage output pin, thus forming a complete high-voltage circuit and electrically connecting the testing equipment and the corresponding test piece.

[0057] As a transitional link for signal or power transmission, the active circuit board can use highly stable conductive materials for its conductors and has an optimized circuit layout design, thereby greatly reducing losses during transmission and ensuring high stability and consistency of signal transmission.

[0058] In some possible implementations, the high-voltage test fixture also includes a low-voltage plate 5, which is disposed on the housing 1. The low-voltage plate 5 and the high-voltage plate 2 are spaced apart. The low-voltage plate 5 is provided with a plurality of low-voltage input pins 51 and low-voltage output pins 52. The low-voltage input pins 51 are used to connect to the low-voltage interface of the test equipment, and the low-voltage output pins 52 are used to electrically connect to the test piece. The drive assembly 4 can drive the movable plate 3 to move to one side of the low-voltage plate 5, so that the movable plate 3 conducts the corresponding low-voltage input pins 51 and low-voltage output pins 52.

[0059] The high-voltage test fixture of this application can be used for both high-voltage and low-voltage testing. The switching between high-voltage and low-voltage testing can be achieved by reciprocating sliding of the movable plate of the drive component 4.

[0060] In some possible implementations, the low-voltage board 5 includes a low-voltage board body and a low-voltage circuit board. The low-voltage board body is disposed on the housing 1, and the low-voltage circuit board is disposed on the low-voltage board body. The low-voltage circuit board is provided with a low-voltage input pin 51 and a low-voltage output pin 52. The low-voltage input pin 51 and the low-voltage output pin 52 pass through the low-voltage board body. The low-voltage lines of the low-voltage interfaces of each test device are electrically connected to the low-voltage input pin 51, and the low-voltage lines of each test piece are electrically connected to the low-voltage output pin 52.

[0061] Similarly, the conductors on the movable circuit board can be metal points or metal blocks, arranged in multiple rows and columns. The movable circuit board can have groups of four conductors, with each pair of conductors electrically connected within each group. Similarly, the low-voltage pins on the low-voltage board are arranged in multiple rows and columns, with each group consisting of two low-voltage input pins and two low-voltage output pins. Within each group, the two low-voltage input pins are connected to the positive and negative terminals of the testing equipment, and the two low-voltage output pins are connected to the test piece. When a group of pins touches a group of conductors, the two electrically connected conductors connect one low-voltage input pin and one low-voltage output pin, and the other two connected conductors connect the other low-voltage input pin and the other low-voltage output pin, thus forming a complete low-voltage circuit loop and electrically connecting the testing equipment and the corresponding test piece.

[0062] The active board 3 adopts a multi-layer printed circuit board (PCB) structure, with high-purity copper foil laid as the conductive layer on the inner layer and an insulating protective layer coated on the outer layer. Precision etching technology is used to achieve accurate circuit layout, thereby ensuring the stability of signal transmission.

[0063] The low-voltage board 5 can be made of high-performance insulating materials such as polycarbonate. The pins inside the frame are made of copper alloy and gold-plated to enhance conductivity and corrosion resistance. The pin spacing is designed strictly according to low-voltage line interface standards to ensure accurate connection with low-voltage lines.

[0064] In some possible implementations, the drive assembly 4 includes a servo motor having a servo motor body 41 and a rocker arm 42. The servo motor body 41 is connected to the housing 1, and the rocker arm 42 is throttle connected to the movable plate 3 to drive the movable plate 3 to reciprocate along a direction perpendicular to the thick bottom of the high-pressure plate 2.

[0065] If a cylinder is used as the drive component 4, an air compressor is required for normal operation, resulting in a more complex structure. In this embodiment, a servo motor is used to drive the movable plate 3, simplifying the structure and reducing costs.

[0066] In some possible implementations, the movable plate 3 (such as the movable plate body) has mating plates 31 on both sides, and the mating plates 31 have sliding grooves 311 extending perpendicularly to the housing 1. An insert 43 is provided at the end of the rocker arm 42, and the insert 43 is inserted into the sliding groove 311. During the movement of the movable plate 3 driven by the rocker arm 42, the insert 43 slides along the sliding groove 311. The insert 43 can be a cylinder, for example, a roller.

[0067] The movable plate body is flexibly connected to the servo motor via the slide groove 311. The servo motor is precisely controlled by the host computer through the movable plate. When the host computer issues a switching command between normal testing and high-voltage testing, the servo motor responds quickly and rotates precisely, driving the rocker arm 42 to drive the slide groove 311, thereby enabling the movable plate 3 to switch efficiently between the high-voltage plate 2 and the low-voltage plate 5, thus achieving a smooth transition between high and low voltage states.

[0068] In some possible implementations, the high-voltage test fixture includes two servo motors, which are respectively disposed on both sides of the movable plate 3. A mating plate 31 is respectively disposed on both sides of the movable plate 3. The two servo motors are respectively driven to engage with the corresponding mating plate 31 to drive the movable plate 3 to move.

[0069] By setting two servo motors, which synchronously drive the movable plate 3 on both sides of the movable plate 3, the movable plate 3 can move smoothly. The design of two servo motors improves the reliability of the fixture.

[0070] In some possible implementations, the movable plate 3 is provided with a clearance notch 32 to avoid the servo motor. During the translation of the movable plate 3 along the housing 1, when the movable plate 3 passes the servo motor, the clearance notch 32 avoids the servo motor, preventing interference between the movable plate 3 and the servo motor. Providing the clearance notch 32 on the movable plate 3 facilitates a compact design of the test fixture.

[0071] In some possible implementations, the high-voltage test fixture may include guide rods 6, which are disposed on the housing 1. A guide hole is provided on the movable plate 3, and the guide rod 6 passes through the guide hole. The guide rod 6 and the guide hole cooperate to restrict the movable plate 3 to translate only along the length of the guide rod 6. At least two guide rods 6 may be provided on the high-voltage test fixture, with multiple guide rods 6 penetrating the movable plate body. This design of multiple guide rods 6 prevents the movable plate 3 from rotating around the guide rods 6.

[0072] In some possible implementations, housing 1 includes a lower shell 11 and an upper cover 12. The lower shell 11 has a cavity and an upper opening, and the upper cover 12 can be attached to the lower shell 11 to cover the upper opening. The high-voltage plate 2, the movable plate 3, and the low-voltage plate 5 are all securely fixed in sequence within the cavity inside the housing, and the precise positioning of each layer can be ensured by screws or snap-fit ​​structures. Wiring interfaces can be provided on housing 1, and a sealed design is adopted to effectively prevent dust, moisture, etc. from entering and avoiding interference with internal connections.

[0073] The high-voltage testing fixture of this application, through optimized design of each layer structure and reasonable material selection, successfully solves many shortcomings of existing fixtures. It significantly improves the reliability and stability of high-voltage testing and has advantages such as reasonable structure, convenient installation, and easy maintenance, making it widely applicable to various product manufacturing and testing scenarios requiring high-voltage testing.

[0074] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0075] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0076] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A high-voltage testing fixture, characterized in that, include: case; A high-voltage board is disposed on the housing. The high-voltage board is provided with multiple high-voltage input pins and multiple high-voltage output pins. The high-voltage input pins are used to electrically connect to the high-voltage interface of the test equipment, and the high-voltage output pins are used to electrically connect to the test piece. A movable plate, which is disposed on the housing; A drive assembly is disposed on the housing and is connected to the movable plate to drive the movable plate to reciprocate along the thickness direction of the high-pressure plate. When the movable plate moves to one side of the high voltage plate, the movable plate connects the corresponding high voltage input pins and high voltage output pins.

2. The high-voltage testing fixture according to claim 1, characterized in that, The high-voltage board includes a high-voltage board body and a high-voltage circuit board; The high-voltage board body is disposed on the housing, the high-voltage circuit board is disposed on the high-voltage board body, the high-voltage circuit board is provided with the high-voltage input pin and the high-voltage output pin, and the high-voltage input pin and the high-voltage output pin penetrate the high-voltage board body; The high-voltage wires of the high-voltage interfaces of each connected test equipment are connected to the high-voltage input pins; The high-voltage wires of each connection test piece are electrically connected to the high-voltage output pin.

3. The high-voltage testing fixture according to claim 1, characterized in that, The movable board includes a movable board body and a movable circuit board; The movable plate body is movably disposed on the housing; The movable circuit board is disposed on the side of the movable plate body away from the high voltage plate. Multiple conductors are disposed on the movable circuit board, and a clearance hole is disposed on the movable plate body corresponding to each conductor. When the movable plate moves to one side of the high voltage plate, the high voltage input pin and the high voltage output pin can pass through the corresponding clearance hole and abut against the corresponding conductor, and each of the conductors conducts the respective high voltage input pin and high voltage output pin.

4. The high-voltage testing fixture according to claim 1, characterized in that, It also includes a low-pressure plate, which is disposed on the housing. The low-pressure plate and the high-pressure plate are spaced apart. The low-pressure plate is provided with a plurality of low-pressure input pins and low-pressure output pins. The low-voltage input pin is used to connect to the low-voltage interface of the test equipment, and the low-voltage output pin is used to electrically connect to the test piece. The drive assembly can drive the movable plate to move to one side of the low-voltage plate, so that the movable plate can conduct the corresponding low-voltage input pins and low-voltage output pins.

5. The high-voltage testing fixture according to claim 4, characterized in that, The low-voltage board includes a low-voltage board body and a low-voltage circuit board. The low-voltage board body is disposed on the housing, and the low-voltage circuit board is disposed on the low-voltage board body. The low-voltage circuit board is provided with low-voltage input pins and low-voltage output pins, which pass through the low-voltage board body. The low-voltage lines of the low-voltage interfaces of each connected test device are electrically connected to the low-voltage input pins; The low-voltage lines of each connection test piece are electrically connected to the low-voltage output pin.

6. The high-voltage testing fixture according to claim 1, characterized in that, The drive component includes a servo motor; The servo motor has a servo motor body and a rocker arm; The servo motor body is connected to the housing, and the rocker arm is connected to the movable plate to drive the movable plate to reciprocate along the direction perpendicular to the thick bottom of the high-pressure plate.

7. The high-voltage testing fixture according to claim 6, characterized in that, The movable plate is provided with mating plates on both sides; The mating plate is provided with a sliding groove, which extends perpendicularly to the housing; The rocker arm is provided with an insert at its end, and the insert is inserted into the groove. During the movement of the movable plate driven by the rocker arm, the insert slides along the groove.

8. The high-voltage testing fixture according to claim 7, characterized in that, Includes two servo motors; The two servo motors are respectively located on both sides of the movable plate; A matching plate is provided on each side of the movable plate; The two servo motors are respectively engaged with the corresponding mating plates to drive the movable plates to move.

9. The high-voltage testing fixture according to claim 6, characterized in that, The movable plate is provided with a clearance notch to avoid the servo motor.

10. The high-voltage testing fixture according to any one of claims 1-9, characterized in that, Including guide rods; The guide rod is disposed on the housing; The movable plate is provided with a guide hole, and the guide rod is disposed through the guide hole.

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