Wire harness conduction test fixture

Abstract

The utility model relates to a wire harness conduction test fixture, which belongs to the technical field of wire harness testing and comprises an accommodating cavity, a contact table is correspondingly arranged in the accommodating cavity, the accommodating cavity is used for accommodating the end part of a wire harness to be tested, and the contact table is electrically connected with the end part of the wire harness to be tested in the accommodating cavity and is used for testing the wire harness to be tested. The contact table is provided with a plurality of electrifying needles, and the electrifying needles are used for being connected with the end part of a wire harness to be tested in the accommodating cavity; the device has the characteristic of small damage to the wire harness.

Description

Technical Field

[0001] The utility model belongs to the technical field of wire harness testing, and in particular relates to a wire harness continuity testing fixture. Background Art

[0002] The port locking device is needed during the wiring harness continuity test. The purpose of the conduction fixture is to check the electrical conductivity of the wiring harness plug, whether the circuit is correct, and whether the accessories of the wiring harness plug are fully installed and in place, and whether the terminals of the plug are bent.

[0003] In the general wiring harness continuity test process, the traditional wiring harness continuity test fixture is generally a slide rail type and a pneumatic module type. For example, the slide rail type discloses a universal test fixture for detecting wiring harnesses, which includes an installation operation platform, which includes a plurality of detection circuit boards for wiring harnesses of different specifications. The circuits on the detection circuit boards are the same. The connectors at one end of the wiring harnesses of different specifications on the detection circuit boards are integrated with corresponding docking connectors. Two slide rails are arranged in parallel on the installation operation platform, and an error-proofing test device connected to the jack connector at the other end of the wiring harness to be tested is arranged on the two At one end of the slide rail, the detection circuit board is arranged between the two slide rails, the detection circuit board, the error-proofing test device are electrically connected to a test machine for electrical testing of the wiring harness to be tested, and the error-proofing test device includes a base, on which a row of pins are provided that can meet the docking requirements of jack connectors of different specifications; for the pneumatic modular type, the device body is divided into an upper fixed block and a lower rising block; the upper fixed block mainly includes a cavity body for accommodating the plug, and the lower rising block is mainly used to install components such as the power-on pin, and the rising block is pushed to fit with the upper part by the cylinder, and then the fixture is started to perform the performance test on the wiring harness plug;

[0004] However, for the slide rail type fixture, since the slide rail type fixture is installed on the table, it is inconvenient to place the wire harness during testing, and there is a risk that the wire harness is hooked on the fixture, causing damage to the wire harness or the test fixture; for the starting module type fixture, since the rising block is equipped with components such as power-on pins, there is a risk of damaging the wire harness plug and damaging the fixture components during the rising test due to inaccurate fit with the upper cavity or inaccurate fit with the wire harness plug, causing unnecessary losses. For this reason, a wire harness conductivity test fixture with less damage to the wire harness is needed. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model provides a wiring harness continuity test fixture, which has the characteristic of causing little damage to the wiring harness.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A wire harness continuity test fixture comprises a receiving cavity, wherein a contact platform is correspondingly arranged in the receiving cavity, the receiving cavity is used to receive an end of a wire harness to be tested, the contact platform is electrically connected to the end of the wire harness to be tested in the receiving cavity, and is used to test the wire harness to be tested.

[0008] As a preferred technical solution of the utility model, the contact platform is provided with a plurality of energizing needles, and the plurality of energizing needles are used to connect with the ends of the wiring harness to be tested in the accommodating cavity.

[0009] As a preferred technical solution of the utility model, a plurality of the accommodating cavities are provided, and the plurality of the accommodating cavities are used to accommodate wire harness ends of a plurality of specifications.

[0010] As a preferred technical solution of the utility model, it also includes a cylinder lock, which includes a switch. The switch is used to instruct the opening and closing of the cylinder lock. The cylinder lock is used to lock the wiring harness to be tested in the accommodating cavity when closed. When the end of the wiring harness to be tested is inserted into the accommodating cavity, the switch is triggered to open the cylinder lock.

[0011] As a preferred technical solution of the utility model, it also includes an indicator light, which is electrically connected to a switch, and the switch is used to instruct the indicator light to turn on and off. When the end of the wiring harness to be tested is inserted into the accommodating cavity, the switch is triggered to turn off the indicator light.

[0012] As a preferred technical solution of the utility model, the contact table is electrically connected to the cylinder lock. When the contact table determines that the tested wiring harness is unqualified, it instructs the cylinder lock to lock. The cylinder lock is electrically connected to a reset switch, and the reset switch is used to instruct the opening and closing of the cylinder lock.

[0013] The beneficial effects of the utility model are:

[0014] (1) By integrating the accommodating cavity and the contact platform, after the wiring harness is inserted into the accommodating cavity, it can be directly arranged on the contact platform, thereby reducing the probability of interference between the contact platform and the wiring harness during movement, and reducing the probability of damage to the wiring harness;

[0015] (2) By setting an indicator light, operators can quickly locate the storage cavity that has not been filled with a wiring harness, thereby improving work efficiency;

[0016] (3) By setting a reset switch, the wiring harness that fails the test is clamped, and it is set so that only authorized users can issue instructions through the reset switch, so that a reminder is given to remove the failed wiring harness, reducing the probability of failed products flowing out. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

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

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model after the wiring harness is inserted;

[0021] Figure 4 This is a schematic diagram of the control circuit of the utility model.

[0022] Description of main component symbols:

[0023] In the figure: 1. Conductivity tester; 2. Accommodating chamber; 3. Contact table; 4. Switch; 5. Cylinder lock; 6. Indicator light; 7. Wiring harness. DETAILED DESCRIPTION

[0024] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0025] See also Figure 1-4 A wire harness continuity test fixture comprises a receiving chamber 2, a contact station 3 is correspondingly arranged in the receiving chamber 2, the receiving chamber 2 is used to receive the end of the wire harness to be tested, the contact station 3 is electrically connected to the end of the wire harness to be tested in the receiving chamber 2, and is used to test the wire harness to be tested;

[0026] Specifically, the body of the continuity tester 1 is a rectangular parallelepiped structure disposed on the ground, and the accommodating cavity 2 is disposed at the top of the port;

[0027] Since the ends of the wire harnesses to be tested have different models or specifications, and the shapes and sizes of the different models or specifications are different, for each numbered plug, specifically, a plurality of accommodating cavities 2 are provided. In this embodiment, a plurality of accommodating cavities 2 are provided on the surface of the rectangular continuity tester 1, and the plurality of accommodating cavities 2 are used to accommodate the ends of the wire harnesses of several specifications;

[0028] At the same time, for each accommodating cavity 2, a contact platform 3 is arranged in the accommodating cavity 2. Specifically, a plurality of energizing pins are arranged on the contact platform 3. The setting positions of the plurality of energizing pins correspond to the positions of the contacts at the end of the wiring harness after the wiring harness corresponding to the accommodating cavity 2 where the energizing pins are located is inserted into the accommodating cavity 2. At this time, when the wiring harness corresponding to the accommodating cavity 2 is inserted into the accommodating cavity 2, the contacts on it contact with the energizing pins of the contact platform 3, and the wiring harness is connected to the energizing pins. At this time, the wiring harness completes the electrical connection with the contact platform 3, and then is electrically connected with the conductivity tester 1, and the conductivity tester 1 can test the wiring harness.

[0029] In order to fix the wiring harness during the test and prevent it from falling off, a cylinder lock 5 is also included. The cylinder lock 5 includes a switch 4. The switch 4 is used to instruct the opening and closing of the cylinder lock 5. The cylinder lock 5 is used to lock the wiring harness to be tested in the accommodating cavity 2 when closed. When the end of the wiring harness to be tested is inserted into the accommodating cavity 2, the switch 4 is triggered to open the cylinder lock 5.

[0030] In this embodiment, the cylinder lock 5 is arranged on the inner wall of the accommodating chamber 2, and a corresponding space is opened on the inner wall of the accommodating chamber 2 to place the cylinder lock 5. The end of the cylinder lock 5 close to the wire harness can be close to or away from the wire harness. When the cylinder lock 5 approaches and contacts the wire harness, the cylinder lock 5 fixes the wire harness in the accommodating chamber 2, thereby completing the locking of the wire harness.

[0031] At the same time, the switch 4 located in the accommodating chamber 2 is connected to a circuit board, the circuit board is connected to the solenoid valve, the solenoid valve is connected to the air pipe, the air pipe is connected to the cylinder lock 5, and the cylinder lock 5 is driven to fasten the plug. The switch 4 is set to be squeezed back to the inner wall of the accommodating chamber 2 after the wire harness is inserted into the accommodating chamber 2. Then the switch 4 sends an electrical signal when it is squeezed to the circuit board, and the circuit board drives the solenoid valve, so that the cylinder lock 5 fastens the plug;

[0032] When the wire harness is inserted into the accommodating cavity 2, the wire harness itself squeezes the switch 4, so that the switch 4 drives the solenoid valve through the circuit board. At this time, the solenoid valve opens, the air pipe is ventilated, and the cylinder lock 5 is driven to fasten the plug, thereby completing the locking of the wire harness;

[0033] When a large number of accommodating cavities 2 are provided, sometimes the operator cannot quickly determine whether a wiring harness has been placed in a certain accommodating cavity 2 for testing. In order to facilitate the operator to quickly grasp the situation of each accommodating cavity 2, an indicator light 6 is also included. The indicator light 6 is electrically connected to the switch 4. The switch 4 is used to instruct the opening and closing of the indicator light 6. When the end of the wiring harness to be tested is inserted into the accommodating cavity 2, the switch 4 is triggered to turn off the indicator light 6.

[0034] Specifically, the switch 4 is connected to a circuit board, and the circuit board is also electrically connected to the indicator light 6. The circuit board is set so that when the switch 4 is not triggered, the command indicator light 6 is always on, and when the switch 4 is triggered, the command indicator light 6 is turned off. At the same time, each accommodating cavity 2 corresponds to a switch 4, and each switch 4 controls a corresponding indicator light 6 through the circuit board. At this time, each accommodating cavity 2 corresponds to an indicator light 6;

[0035] When in use, part of the accommodating cavity 2 is inserted into the harness to be tested, at this time the harness to be tested squeezes and triggers the switch 4, and after receiving the signal, the circuit board instructs the corresponding indicator light 6 to turn off, and part of the accommodating cavity 2 is not inserted into the harness to be tested, at this time the switch 4 is not triggered, and the circuit board instruction indicator light 6 remains lit. At this time, the operator can quickly locate the accommodating cavity 2 where the harness is not placed by looking for the lit indicator light 6;

[0036] In some cases, when the continuity tester 1 determines that the test result of the wiring harness is unqualified after testing, the operator does not pay attention to the test result, and directly removes the unqualified wiring harness and puts the unqualified wiring harness together with the qualified products. In order to prevent the operator from directly removing the unqualified wiring harness, the contact table 3 is electrically connected to the cylinder lock 5. When the contact table 3 determines that the tested wiring harness is unqualified, it instructs the cylinder lock 5 to lock. The cylinder lock 5 is electrically connected to a reset switch, and the reset switch is used to instruct the opening and closing of the cylinder lock 5;

[0037] Specifically, the contact station 3, the reset switch and the switch 4 are electrically connected to the circuit board respectively. When the contact station 3 tests the wiring harness each time, the test result is sent to the circuit board. When the circuit board receives the test result indicating that it is unqualified, the cylinder lock 5 is instructed to close, and at this time the circuit board waits for the instruction of the reset switch;

[0038] At the same time, the reset switch is provided with an unqualified removal instruction, and the reset switch is pre-entered with authorized users. Only authorized users can instruct the reset switch to issue an unqualified removal instruction. When the unqualified removal instruction is issued, the cylinder maintains the clamping of the wire harness, and only responds to the unqualified removal instruction and unlocks the cylinder lock 5;

[0039] When the wiring harness of a certain accommodating cavity 2 in the conduction tester 1 is judged to be unqualified, an unqualified instruction is issued to the circuit board, and the circuit board instructs the cylinder lock 5 corresponding to the accommodating cavity 2 to clamp, and the authorized user issues an unqualified removal instruction to the reset switch, and the reset switch instructs the circuit board to unlock the cylinder lock 5;

[0040] By setting a reset switch, the wiring harness that fails the test is clamped, and it is set so that only authorized users can issue instructions through the reset switch, so that the removal of the unqualified wiring harness is reminded, reducing the probability of unqualified products flowing out.

[0041] The working principle and use process of this utility model:

[0042] When the wiring harness corresponding to the accommodating cavity 2 is inserted into the accommodating cavity 2, the contacts on it contact the energizing pins of the contact platform 3, and the wiring harness is connected to the energizing pins. At this time, the wiring harness completes the electrical connection with the contact platform 3, and then is electrically connected to the conductivity tester 1. The conductivity tester 1 can test the wiring harness.

[0043] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A wiring harness continuity test fixture, characterized in that: The device comprises a receiving cavity, in which a contact platform is correspondingly arranged. The receiving cavity is used to receive the end of the wiring harness to be tested. The contact platform is electrically connected to the end of the wiring harness to be tested in the receiving cavity and is used to test the wiring harness to be tested.

2. A wiring harness continuity test fixture according to claim 1, characterized in that: The contact station is provided with a plurality of energizing pins, and the plurality of energizing pins are used to connect with the ends of the wiring harness to be tested in the accommodating cavity.

3. The wiring harness continuity test fixture according to claim 1, characterized in that: A plurality of the accommodating cavities are provided, and the plurality of the accommodating cavities are used to accommodate wire harness ends of a plurality of specifications.

4. The wiring harness continuity test fixture according to claim 1, characterized in that: It also includes a cylinder lock, which includes a switch for instructing the opening and closing of the cylinder lock. The cylinder lock is used to lock the wiring harness to be tested in the accommodating cavity when closed, and the switch is triggered to open the cylinder lock when the end of the wiring harness to be tested is inserted into the accommodating cavity.

5. The wiring harness continuity test fixture according to claim 4, characterized in that: It also includes an indicator light, which is electrically connected to a switch. The switch is used to instruct the indicator light to turn on and off. When the end of the wiring harness to be tested is inserted into the accommodating cavity, the switch is triggered to turn off the indicator light.

6. The wiring harness continuity test fixture according to claim 5, characterized in that: The contact station is electrically connected to the cylinder lock. When the contact station determines that the tested wiring harness is unqualified, it instructs the cylinder lock to lock. The cylinder lock is electrically connected to a reset switch, and the reset switch is used to instruct the cylinder lock to open or close.

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