A detection tool for insulation voltage resistance detector
By designing a testing fixture for an insulation withstand voltage tester, a pneumatic component is used to drive a pressure block to press the wire harness onto the conductive sheet, solving the problems of insulation damage to shielded wires and cumbersome testing operations, and achieving rapid and safe insulation performance testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIANGFAN QUNLONG AUTOMOBILE PARTS CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-06-02
AI Technical Summary
In existing technologies, the insulation of shielded wires is easily damaged during processing, making it difficult to detect quickly. Furthermore, withstand voltage testing is cumbersome and poses safety hazards.
Design a testing fixture for an insulation withstand voltage tester, including a housing, a clamping assembly and a power connection post. A pneumatic component drives a pressure block to press the wire harness onto a conductive sheet, and the alligator clip of the withstand voltage tester is used for rapid insulation performance testing.
It enables rapid and safe testing of wire harness insulation performance, avoids damage to the insulation of shielded wire cores, and improves testing efficiency and safety.
Smart Images

Figure CN224317730U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire harness testing technology, and in particular to a testing fixture for an insulation withstand voltage tester. Background Technology
[0002] With the increasing informatization of the automotive industry, the demand for electronic components in automobiles is growing, and the requirements for shielding against signal interference are becoming more stringent. Therefore, a large number of shielded wires are used in the design of wiring harnesses in automobiles. While shielded wires have a good filtering effect on signal interference, the processing of shielded wires in the production of wiring harnesses is indeed very troublesome. Due to the irregularity of the shielded wires, advanced equipment cannot be used for shielding mesh processing. It is basically necessary to use manual methods such as picking and cutting the mesh, which inevitably results in the insulation of the shielded wire cores being stripped or scratched, affecting the insulation effect and withstand voltage rating. Furthermore, it is difficult to detect insulation damage with the naked eye and independently identify defective products. This leads to finished wiring harnesses being installed in vehicles and entering the market, affecting the vehicle's performance.
[0003] While the vehicle is stationary, there is minimal impact. However, once the vehicle is in motion, contact between the shielding mesh and the core wires may occur, affecting the reactance signal and causing partial functional failures. To avoid these problems, the shielding mesh and core wires must undergo withstand voltage testing after manufacturing to identify and remove defective products.
[0004] During testing, the maximum release voltage can reach 3000V. Directly using the alligator clips of the withstand voltage tester to clamp the core wire and the shielding mesh separately before pressing the test button is not only cumbersome to operate, but also poses a safety hazard when the exposed wires release high voltage during testing.
[0005] Therefore, it is necessary to provide a testing fixture for an insulation withstand voltage tester to solve the above problems. Utility Model Content
[0006] The purpose of this invention is to provide a testing fixture for an insulation withstand voltage tester, which can be used in conjunction with the withstand voltage tester to quickly test the insulation performance of wire harnesses.
[0007] To achieve the above objectives, the technical solution proposed by this utility model is as follows: A testing fixture for an insulation withstand voltage tester includes: a housing, two clamping assemblies, and two electrical terminals. The housing contains two spaced conductive plates. The two clamping assemblies are installed inside the housing and are respectively located directly above the two conductive plates. The two clamping assemblies can move towards the two conductive plates. The two electrical terminals are electrically connected to the two conductive plates. The two alligator clips of the withstand voltage tester are clamped onto the two electrical terminals.
[0008] Preferably, the box is equipped with a timer and a socket, the socket is equipped with a power switch, the timer is electrically connected to the socket, the power switch controls the on / off of the circuit between the socket and the timer, and the socket is for plugging in an external power supply.
[0009] Preferably, each clamping assembly includes a pneumatic component and a pressure block connected to the pneumatic component. The pneumatic component is mounted on the top of the housing, and the pressure block is distributed in a direction close to the conductive sheet. The pneumatic component drives the pressure block to move up and down.
[0010] Preferably, the bottom surface of the pressing block is provided with a pad.
[0011] Preferably, a buffer plate is provided at the bottom of the box body, and two conductive sheets are installed on the buffer plate at intervals.
[0012] Compared with existing technologies, the advantages are that the two clamping components press the two ends of the wire harness onto the two conductive plates respectively, and the two alligator clips of the withstand voltage tester are clamped onto the two terminals respectively, which can be used in conjunction with the withstand voltage tester to quickly test the insulation performance of the wire harness.
[0013] Other features and advantages of this invention will be set forth in the following description, and in part will be apparent from the description, or may be learned by practice of the invention. The features and advantages of this invention may be realized and obtained by means of the elements and combinations specifically pointed out in the appended claims. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a partial structural diagram of the testing fixture used in an insulation withstand voltage tester.
[0016] Figure 2 for Figure 1 The diagram shows a three-dimensional view of the testing fixture used in an insulation withstand voltage tester.
[0017] Reference numerals: 1. Box body; 11. Conductive sheet; 12. Buffer plate; 2. Clamping assembly; 21. Pneumatic component; 22. Pressure block; 23. Pad block; 3. Electrical connection post; 4. Timer; 5. Socket; 51. Power switch. Detailed Implementation
[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the present utility model and are not intended to limit the present utility model.
[0019] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0021] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. Additionally, "multiple" or "several" means two or more, unless otherwise explicitly specified.
[0022] Please see Figures 1 to 2 This utility model proposes a testing fixture for an insulation withstand voltage tester, comprising: a housing 1, two clamping assemblies 2, and two electrical terminals 3. One side of the housing 1 has an opening, and two spaced conductive plates 11 are provided inside the housing 1. The two clamping assemblies 2 are installed inside the housing 1, and are respectively located directly above the two conductive plates 11. The two clamping assemblies 2 can move towards the two conductive plates 11 respectively. The two electrical terminals 3 are electrically connected to the two conductive plates 11 respectively through conductive wires. The two alligator clips of the withstand voltage tester are clamped on the two electrical terminals 3 respectively.
[0023] When testing the insulation performance of the wire harness, one end of the wire harness is placed on one of the conductive plates 11 and the other end of the wire harness is placed on the other conductive plate 11. The two clamping components 2 move toward the two conductive plates 11 respectively, pressing the two ends of the wire harness onto the two conductive plates 11 respectively, so that the conductive core of the wire harness contacts the conductive plate 11.
[0024] Attach the two alligator clips (one red and the other black) of the withstand voltage tester to the two terminals 3, ensuring that the withstand voltage tester, terminals 3, conductive plate 11, and the wire harness under test are energized. Turn on the withstand voltage tester to apply voltage to the wire harness and test for leakage. If there is no leakage, the wire harness has excellent insulation performance; if there is leakage, the wire harness has poor insulation performance.
[0025] In a preferred embodiment, the housing 1 is provided with a timer 4 and a socket 5. A power switch 51 is provided at the socket 5. The timer 4 is electrically connected to the socket 5. The power switch 51 controls the on / off state of the circuit between the socket 5 and the timer 4. The socket 5 allows an external power plug to be plugged in to connect to the power supply. The timer 4 can record the test time of the wire harness. It should be noted that the timer 4 is a digital timer.
[0026] In a preferred embodiment, each clamping assembly 2 includes a pneumatic component 21 and a pressure block 22 connected to the pneumatic component 21. The pneumatic component 21 is mounted on the top of the housing 1, and the pressure block 22 is distributed towards the conductive sheet 11. The pneumatic component 21 drives the pressure block 22 to move up and down. It should be noted that in this embodiment, the pneumatic component 21 is a cylinder.
[0027] Thus, when the pneumatic component 21 drives the pressure block 22 to move downward, the pressure block 22 moves towards the conductive sheet 11 to press the wire harness onto the conductive sheet 11, so that the conductive core of the wire harness contacts the conductive sheet 11; when the pneumatic component 21 drives the pressure block 22 to move upward, the pressure block 22 moves away from the conductive sheet 11 to release the wire harness, making it easier to remove the wire harness.
[0028] In a preferred embodiment, a pad 23 is provided on the bottom surface of the pressure block 22. It should be noted that, in this embodiment, the pad 23 can be made of soft materials such as silicone or rubber. This design is because when the pressure block 22 presses on the wire harness, it can easily deform the wire harness. Therefore, providing a pad 23 on the bottom surface of the pressure block 22 buffers the force of the pneumatic component 21, preventing the pressure block 22 from directly pressing on the wire harness and thus preventing the wire harness from being deformed.
[0029] In a preferred embodiment, a buffer plate 12 is provided at the bottom of the box body 1, and two conductive sheets 11 are spaced apart and mounted on the buffer plate 12. By providing a buffer plate 12 at the bottom of the box body 1, the force exerted on the box body 1 when the pneumatic component 21 drives the pressure block 22 to press down can be buffered, preventing the pressure block 22 from impacting the box body 1. It should be noted that the box body 1 can be made of acrylic sheet to ensure that the box body 1 has insulation properties and reduce safety hazards.
[0030] This invention is not limited to the description in the specification and embodiments. Therefore, other advantages and modifications can be readily realized by those skilled in the art. Thus, without departing from the spirit and scope of the general concept as defined by the claims and their equivalents, this invention is not limited to the specific details, representative devices and illustrated examples shown and described herein.
Claims
1. A testing fixture for an insulation withstand voltage tester, characterized in that, include: The tester comprises a housing (1), two clamping components (2), and two electrical terminals (3). The housing (1) contains two spaced conductive plates (11). The two clamping components (2) are installed inside the housing (1) and are located directly above the two conductive plates (11). The two clamping components (2) can move towards the two conductive plates (11). The two electrical terminals (3) are electrically connected to the two conductive plates (11). The two alligator clips of the withstand voltage tester are clamped on the two electrical terminals (3).
2. The testing fixture for an insulation withstand voltage tester as described in claim 1, characterized in that, The box (1) is equipped with a timer (4) and a socket (5). A power switch (51) is provided at the socket (5). The timer (4) is electrically connected to the socket (5). The power switch (51) controls the opening and closing of the circuit between the socket (5) and the timer (4). The socket (5) is for external power plugs to be plugged in.
3. The testing fixture for an insulation withstand voltage tester as described in claim 1, characterized in that, Each clamping assembly (2) includes a pneumatic component (21) and a pressure block (22) connected to the pneumatic component (21). The pneumatic component (21) is mounted on the top of the housing (1), and the pressure block (22) is distributed in a direction close to the conductive sheet (11). The pneumatic component (21) drives the pressure block (22) to move up and down.
4. The testing fixture for an insulation withstand voltage tester as described in claim 3, characterized in that, The bottom surface of the pressure block (22) is provided with a pad (23).
5. The testing fixture for an insulation withstand voltage tester as described in claim 1, characterized in that, The bottom of the box (1) is provided with a buffer plate (12), and two conductive sheets (11) are installed on the buffer plate (12) at intervals.