Low-temperature-resistant test device for connector wire harness research and development

Abstract

The utility model relates to a connector wire harness testing device, in particular to a connector wire harness research and development low-temperature-resistant testing device, which comprises a mounting seat, a testing box, a testing socket, a connecting plate, telescopic rods, springs, a vibration motor and the like, the testing socket is fixed on the inner wall of the rear side of the testing box, and the four telescopic rods are connected to the top of the mounting seat at intervals. A connecting plate is connected among the four telescopic rods, the test box is fixedly connected to the top of the connecting plate, the vibration motor is fixedly installed on the top of the test box, the telescopic rods are sleeved with springs, and the two ends of the springs are connected with the connecting plate and the fixed ends of the telescopic rods respectively. Through the cooperation of the telescopic rod, the spring and the vibration motor, the test box can be driven to vibrate up and down, the test box transmits the vibration to the connector inserted in the test socket, the dynamic low temperature resistance test in the actual working condition is simulated, the test error can be reduced, and the test efficiency is improved. The electrical performance and the mechanical reliability of the connector wire harness in an extreme environment can be accurately evaluated, and the defects of a traditional static test are overcome.

Description

Technical Field

[0001] This utility model relates to a connector wire harness testing device, and more particularly to a low-temperature resistance testing device for connector wire harness research and development. Background Technology

[0002] In aerospace, polar research, and deep-sea submersible applications, connector harnesses need to maintain stable electrical performance and mechanical reliability in extreme low-temperature environments. To ensure the normal operation of equipment in these conditions, cryogenic testing of connector harnesses is essential. This is not only crucial for the safe and reliable operation of the equipment but also a key factor in ensuring personnel safety and mission success. Currently, cryogenic testing equipment is used to test connector harnesses. However, traditional cryogenic testing equipment typically only provides a static cryogenic environment and cannot simulate the effects of dynamic mechanical stresses in actual working conditions. This leads to significant discrepancies between test results and actual application scenarios, making it difficult to accurately assess the performance of connector harnesses in extreme environments. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] In order to overcome the shortcomings of traditional low-temperature testing equipment, which can only provide static low-temperature testing and cannot simulate the dynamic mechanical stress effects under actual working conditions, this utility model aims to provide a low-temperature resistance testing device for connector wire harness development that can provide dynamic low-temperature resistance testing.

[0005] (2) Technical solution

[0006] To address the aforementioned technical problems, this utility model provides a low-temperature resistance testing device for connector wire harness development, comprising a mounting base, a compressor, a cold air duct, a test chamber, a sealed door, a test socket, a connecting plate, telescopic rods, springs, and a vibration motor. The compressor is fixedly installed inside the mounting base and connected to the test chamber via the cold air duct. A sealed door is hinged to the front of the test chamber, and a test socket is fixed to the inner rear wall of the test chamber. Four telescopic rods are spaced apart on the top of the mounting base, and a connecting plate connects the four telescopic rods. The test chamber is fixedly connected to the top of the connecting plate. The vibration motor is fixedly installed on the top of the test chamber. Springs are fitted onto the telescopic rods, and the two ends of the springs are connected to the connecting plate and the fixed end of the telescopic rod, respectively.

[0007] Preferably, it also includes temperature sensors; multiple temperature sensors are installed inside the test chamber to monitor the temperature distribution.

[0008] Preferably, it also includes a thermal insulation layer, with the inner wall of the test chamber having a thermal insulation layer to maintain the stability of the low-temperature environment.

[0009] Preferably, it also includes an observation window, which is embedded in the sealed door.

[0010] Preferably, it also includes a sealing strip, and the sealing door is provided with a sealing strip.

[0011] Preferably, it also includes shock-absorbing pads, with shock-absorbing pads connected to the four corners of the bottom surface of the base.

[0012] (3) Beneficial effects

[0013] By combining a telescopic rod, a spring, and a vibration motor, the test chamber can be driven to vibrate up and down. The test chamber transmits the vibration to the connector plugged into the test socket, realizing dynamic low-temperature resistance testing that simulates actual working conditions. This reduces test errors and enables accurate evaluation of the electrical performance and mechanical reliability of connector harnesses in extreme environments, making up for the shortcomings of traditional static testing. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a partial three-dimensional structural diagram of the present invention.

[0016] Figure 3 This is a schematic diagram showing the connection between the test chamber and the insulation layer of this utility model.

[0017] Figure 4 This is a schematic diagram showing the connection between the sealing door, sealing strip, and observation window of this utility model.

[0018] Figure 5 This is a schematic diagram showing the connection of the connecting plate, telescopic rod, and spring of this utility model.

[0019] The labels in the attached diagram are: 1-mounting base, 2-compressor, 3-cold air duct, 4-test chamber, 5-sealed door, 51-sealing strip, 6-test socket, 7-connector, 8-insulation layer, 9-observation window, 10-connecting plate, 11-telescopic rod, 12-spring, 13-vibration motor. Detailed Implementation

[0020] A low-temperature resistance testing device for connector wire harness development, see [link / reference]. Figures 1-5The test chamber includes a mounting base 1, a compressor / refrigeration unit 2, a cold air duct 3, a test chamber 4, a sealing door 5, a test socket 6, a sealing strip 51, an insulation layer 8, an observation window 9, a temperature sensor, a shock-absorbing pad, a connecting plate 10, a telescopic rod 11, a spring 12, and a vibration motor 13. The compressor / refrigeration unit 2 is fixedly installed inside the mounting base 1 and is connected to the test chamber 4 via the cold air duct 3. Multiple temperature sensors are installed inside the test chamber 4 to monitor temperature distribution. A sealing door 5 and a sealing strip 51 are hinged to the front of the test chamber 4. The sealing door 5 has a sealing strip 51 to seal the gap between the sealing door 5 and the test chamber 4, reducing cold air loss. The inner wall of the test chamber 4 has an insulation layer 8 to maintain a stable low-temperature environment. Qualitatively, the observation window 9 is embedded in the sealed door 5 to facilitate observation of the connector 7 wiring harness without frequently opening the sealed door 5, thereby reducing cold air leakage. A test socket 6 is fixed to the inner rear wall of the test chamber 4. Four telescopic rods 11 are connected at intervals on the top of the mounting base 1, and a connecting plate 10 is connected between the four telescopic rods 11. The test chamber 4 is fixedly connected to the top of the connecting plate 10. The vibration motor 13 is fixedly installed on the top of the test chamber 4. Springs 12 are sleeved on the telescopic rods 11, and the two ends of the springs 12 are respectively connected to the fixed ends of the connecting plate 10 and the telescopic rods 11. Shock-absorbing pads are connected to the four corners of the bottom surface of the base to reduce vibration and noise, and to prevent the base from directly colliding with the platform on which the base is placed, thus protecting the base.

[0021] This device can be used when a low-temperature resistance test is required on connector 7 wiring harness. The device provides a stable support base via mounting base 1. After the compressor refrigeration unit 2 is started, cold air is generated and delivered to the test chamber 4 through cold air pipe 3, providing an extreme low-temperature environment. Insulation layer 8 and sealing door 5 work together to maintain the stability of the low-temperature environment. The connector 7 to be tested is inserted into the test socket 6 via its plug. The test socket 6 is connected to a poor contact tester via a wire. The poor contact tester can effectively identify signal problems caused by poor contact, thereby enabling the detection of the wiring harness signal on connector 7. The poor contact tester is existing technology and will not be described in detail here. The vibration motor 13 is started, driving the test chamber 4 to vibrate the connecting plate 10 up and down. Spring 12 assists in the up-and-down vibration of the test chamber 4. The test chamber 4 transmits the vibration to the connector 7 inserted into the test socket 6, realizing a dynamic low-temperature resistance test simulating actual working conditions. This reduces test errors and allows for accurate evaluation of the electrical performance and mechanical reliability of connector 7 wiring harness in extreme environments.

Claims

1. A low-temperature resistance testing device for connector wire harness development, characterized in that, The device includes a mounting base (1), a compressor (2), a cold air duct (3), a test chamber (4), a sealing door (5), a test socket (6), a connecting plate (10), a telescopic rod (11), a spring (12), and a vibration motor (13). The compressor (2) is fixedly installed inside the mounting base (1). The compressor (2) is connected to the test chamber (4) through the cold air duct (3). The sealing door (5) is hinged to the front of the test chamber (4). The test socket (6) is fixed to the inner wall of the rear side of the test chamber (4). Four telescopic rods (11) are connected at intervals on the top of the mounting base (1). The connecting plate (10) is connected between the four telescopic rods (11). The test chamber (4) is fixedly connected to the top of the connecting plate (10). The vibration motor (13) is fixedly installed on the top of the test chamber (4). The spring (12) is sleeved on the telescopic rod (11). The two ends of the spring (12) are connected to the fixed ends of the connecting plate (10) and the telescopic rod (11), respectively.

2. The low-temperature test device for developing a connector harness according to claim 1, characterized by It also includes temperature sensors. Multiple temperature sensors are installed inside the test chamber (4) to monitor the temperature distribution.

3. The device according to claim 2, wherein It also includes an insulation layer (8). The inner wall of the test chamber (4) is provided with an insulation layer (8) to maintain the stability of the low temperature environment.

4. The device according to claim 3, wherein It also includes an observation window (9), which is embedded in the sealed door (5).

5. The device according to claim 4, wherein the device is used for developing low-temperature resistance of a connector harness. It also includes a sealing strip (51), and the sealing door (5) is provided with a sealing strip (51).

6. The device according to claim 5, wherein It also includes shock-absorbing pads, with shock-absorbing pads connected to the four corners of the base.

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