EOL test wire harness for testing equipment to monitor contact temperature rise

Abstract

The utility model belongs to the technical field of test wire harnesses, particularly relates to an EOL test wire harness for monitoring contact temperature rise by test equipment, and aims to solve the problem that the temperature rise process is difficult to monitor in the test process of the EOL test wire harness provided by the background technology, and provides the following scheme: the EOL test wire harness comprises a connector frame body, one side of the inner wall of the connector frame body is fixedly connected with electrode plates which are symmetrically distributed, and the other side of the inner wall of the connector frame body is fixedly connected with a cable. According to the EOL test wire harness, the two layers of inner sheaths and the threaded pipe are additionally arranged outside the cable, so that the abrasion of the wire harness in the back-and-forth test process is reduced, the strength of the wire harness is improved, the service life of the EOL test wire harness is prolonged, and in a temperature rise monitoring mechanism, once the problem of poor contact occurs in the test process, the EOL test wire harness cannot be damaged. When a fire occurs, high temperature is generated near the first wiring terminal and the second wiring terminal and is sensed by the thermistor, so that the temperature change can be monitored in real time, the effect of timely early warning is achieved, and the possibility of fire occurrence is reduced.

Description

Technical Field

[0001] This utility model relates to the field of test harness technology, and in particular to an EOL test harness for monitoring contact temperature rise in test equipment. Background Technology

[0002] A test harness is a wire harness used to test and verify the correctness and functionality of the connections of various electrical devices in a circuit system. It typically consists of a series of wires, connectors, and insulation materials used to transmit signals and power in automotive, electronic equipment, or other electrical systems. The primary purpose of a test harness is to ensure that the electrical connections of the system are secure, thereby guaranteeing the normal operation and safety of the equipment.

[0003] In the powertrain testing of some gasoline vehicles, EOL test harnesses are required. The EOL test harness is connected to a connector, which is then connected to the powertrain of the gasoline vehicle. However, during the testing process, if a poor contact occurs, an electric arc will be generated, producing high temperatures and potentially causing a fire. The entire heating process is difficult to monitor, so it is necessary to design an EOL test harness that can be used to monitor the contact temperature rise of the testing equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an EOL test harness for monitoring contact temperature rise in testing equipment, overcoming the deficiencies of existing technologies and effectively solving the problem of difficulty in monitoring the temperature rise process during the testing of EOL test harnesses.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An EOL test harness for monitoring contact temperature rise in testing equipment includes a connector housing, wherein symmetrically distributed electrode plates are fixedly connected to one side of the inner wall of the connector housing, and a cable is fixedly connected to the other side of the inner wall of the connector housing. The outer wall of the cable is provided with an inner sheath, and the outer wall of the inner sheath is provided with a threaded tube.

[0007] The connector housing is equipped with a temperature rise monitoring mechanism, which includes a thermistor disposed inside the connector housing, symmetrically distributed terminals fixedly connected to one side of the outer wall of the thermistor, and lead wires fixedly connected to one end of the outer wall of the terminals.

[0008] Preferably, the electrode plate is composed of a terminal block and an electrode end, wherein the terminal block is fixedly connected to the inner wall of the connector frame.

[0009] Preferably, a second terminal is welded to the outer wall of one end of the cable, and a fastening screw is fixedly connected between the first terminal and the second terminal.

[0010] Preferably, the outer wall of the other side of the connector frame is equipped with symmetrically distributed sealing joints, and the cable passes through the inner wall where the sealing joints are provided.

[0011] Preferably, the connector frame has a partition plate on the bottom inner wall, and the thermistor is installed inside the partition plate.

[0012] Preferably, the thermistor is connected to a host computer via lead wires.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The EOL test harness designed for monitoring contact temperature rise of testing equipment has two layers of inner sheath and threaded tube added to the outside of the cable, which adds an extra protective structure, reduces wear during the back-and-forth testing process, improves the strength of the harness, and increases the service life of the EOL test harness.

[0015] 2. The EOL test harness designed in this experiment is used to monitor the contact temperature rise of the test equipment. In the temperature rise monitoring mechanism, a thermistor is installed near the terminal block, and the thermistor is connected to the host computer through a lead wire. Once a poor contact problem occurs during the test, a high temperature will be generated near terminal block one and terminal block two, which will be sensed by the thermistor. This allows for real-time monitoring of temperature changes and provides timely early warning, reducing the possibility of fire. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an EOL test harness for monitoring contact temperature rise in testing equipment, as proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the electrode plate and cable structure of an EOL test harness for monitoring contact temperature rise in testing equipment, as proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of a temperature rise monitoring mechanism for an EOL test harness used to monitor contact temperature rise in testing equipment, as proposed in this utility model.

[0019] In the diagram: 1. Connector housing; 2. Electrode plate; 3. Cable; 4. Inner sheath; 5. Threaded tube; 6. Temperature rise monitoring mechanism; 7. Thermistor; 8. Terminal block; 9. Lead wire; 10. Terminal block one; 11. Electrode end; 12. Terminal block two; 13. Fastening screw; 14. Sealing joint; 15. Partition plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1, refer to Figure 1-2 An EOL test harness for monitoring contact temperature rise in testing equipment includes a connector housing 1, with symmetrically distributed electrode plates 2 fixedly connected to one side of the inner wall of the connector housing 1, and a cable 3 fixedly connected to the other side of the inner wall of the connector housing 1. The outer wall of the cable 3 is provided with an inner sheath 4, and the outer wall of the inner sheath 4 is provided with a threaded tube 5.

[0022] In this embodiment, two inner sheaths 4 and a threaded tube 5 are added to the outside of the cable 3, which adds an extra protective structure, reduces wear on the wire harness during the back-and-forth testing process, improves the strength of the wire harness, and increases the service life of the EOL test wire harness.

[0023] Example 2, refer to Figure 1 and Figure 3 An EOL test harness for monitoring contact temperature rise in testing equipment, wherein a temperature rise monitoring mechanism 6 is provided inside the connector housing 1, and the temperature rise monitoring mechanism 6 includes a thermistor 7 disposed inside the connector housing 1, symmetrically distributed terminals 8 fixedly connected to one side of the outer wall of the thermistor 7, and lead wires 9 fixedly connected to one end of the outer wall of the terminal 8.

[0024] In this embodiment, in the temperature rise monitoring mechanism 6, a thermistor 7 is installed near the wiring terminals, and the thermistor 7 is connected to the host computer through the lead wire 9. Once a poor contact problem occurs during the test, high temperature will be generated near the wiring terminals 10 and 12, which will be sensed by the thermistor 7. It can monitor temperature changes in real time, has the effect of timely warning, and reduces the possibility of fire.

[0025] Reference Figure 1-2 The electrode plate 2 is composed of a terminal block 10 and an electrode end 11, wherein the terminal block 10 is fixedly connected to the inner wall of the connector frame 1.

[0026] Reference Figure 2 One end of the cable 3 has a terminal block 12 welded to its outer wall, and a fastening screw 13 is fixedly connected between the terminal block 10 and the terminal block 12.

[0027] Reference Figure 1 The connector frame 1 has symmetrically distributed sealing joints 14 installed on the outer wall of the other side, and the cable 3 passes through the inner wall where the sealing joints 14 are provided.

[0028] Reference Figure 3A partition plate 15 is provided on the bottom inner wall of the connector frame 1, and the thermistor 7 is installed inside the partition plate 15.

[0029] Reference Figure 3 Thermistor 7 is connected to the host computer via lead wire 9.

[0030] Working principle: An inner sheath 4 and a threaded tube 5 are added to the outside of the cable 3 to improve the strength of the wire harness and reduce wear during the test. After the cable 3 is fixed inside the connector frame 1, the electrode plate 2 and the cable 3 are connected through terminal 10 and terminal 2 12. If a poor contact problem occurs during the test, the host computer can detect the high temperature through the thermistor 7 and issue an early warning in time to prevent fire.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An EOL test harness for monitoring contact temperature rise in testing equipment, comprising a connector housing (1), characterized in that, One side of the inner wall of the connector frame (1) is fixedly connected to symmetrically distributed electrode plates (2), and the other side of the inner wall of the connector frame (1) is fixedly connected to a cable (3). The outer wall of the cable (3) is provided with an inner sheath (4), and the outer wall of the inner sheath (4) is provided with a threaded tube (5). The connector frame (1) is provided with a temperature rise monitoring mechanism (6), and the temperature rise monitoring mechanism (6) includes a thermistor (7) provided inside the connector frame (1), symmetrically distributed terminals (8) fixedly connected to the outer wall of one side of the thermistor (7), and lead wires (9) fixedly connected to the outer wall of one end of the terminal (8).

2. The EOL test harness for monitoring contact temperature rise in testing equipment according to claim 1, characterized in that, The electrode plate (2) is composed of a terminal block (10) and an electrode end (11), wherein the terminal block (10) is fixedly connected to the inner wall of the connector frame (1).

3. The EOL test harness for monitoring contact temperature rise in testing equipment according to claim 1, characterized in that, One end of the cable (3) is welded with a second terminal (12), and a fastening screw (13) is fixedly connected between the first terminal (10) and the second terminal (12).

4. The EOL test harness for monitoring contact temperature rise in testing equipment according to claim 1, characterized in that, The connector frame (1) has symmetrically distributed sealing joints (14) installed on the outer wall of the other side, and the cable (3) passes through the inner wall of the sealing joints (14).

5. The EOL test harness for monitoring contact temperature rise in testing equipment according to claim 1, characterized in that, The connector frame (1) has a partition plate (15) on its bottom inner wall, and the thermistor (7) is installed inside the partition plate (15).

6. The EOL test harness for monitoring contact temperature rise in testing equipment according to claim 1, characterized in that, The thermistor (7) is connected to a host computer via a lead wire (9).

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