A wiring harness plug-in detection device and detection method

Abstract

A wiring harness plug-in detection device includes a fixed plate, a movable plate, a positioning wedge, and at least two mounting bolts. The movable plate is provided with a slot, at least one side wall of the slot is an inclined surface, so that the cross section of the slot is a trapezoidal structure with a wide opening and a narrow slot bottom. The positioning wedge is arranged on the inclined side wall of the slot, so that a positioning space for the plug is formed between the positioning wedge and the other side wall of the slot. The screws of at least two mounting bolts pass through the fixed plate and are fixedly connected to the movable plate. A reset spring is sleeved on each mounting bolt and is pre-tightened by the fixed plate and the nut of the mounting bolt. A distance sensor is fixedly arranged on the fixed plate to detect the spacing distance between the movable plate and the fixed plate. The invention has a simple structure and is convenient for detection. It can detect the connection strength between the wiring harness and the plug, and then verify whether the wiring harness is plugged in place. In addition, the detection result is accurate and consistent.

Description

Technical Field

[0001] The invention relates to the field of automobile wiring harnesses, and in particular to a wiring harness plug-in position detection device and a detection method. Background Art

[0002] Automobile wiring harness manufacturers manually plug the corresponding wiring harnesses into the plugs, and then assemble multiple wiring harnesses with plugs to obtain automobile wiring harnesses.

[0003] After manually plugging the wire harness into the connector, it is necessary to check whether it is plugged in properly to ensure the connection stability between the wire harness and the plug. Currently, the main method of testing is to manually pull the free end of the wire harness. This testing method is not only inefficient, but also heavily relies on manual experience and judgment, and is inaccurate.

[0004] Therefore, how to design a detection device with a simple structure to ensure the accuracy and consistency of the detection results is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide a wiring harness plug-in detection device in view of the deficiencies in the prior art. The device has a simple structure and is easy to detect. The device can detect the connection strength between the wiring harness and the plug, and further verify whether the wiring harness is plugged in place. In addition, the detection result is accurate and consistent.

[0006] The technical solution of the present invention is: a wiring harness plug-in detection device, comprising a fixed plate, a movable plate, a positioning wedge, and at least two mounting bolts, the movable plate is provided with a slot, at least one side wall of the slot is an inclined surface, so that the cross-section of the slot is a trapezoidal structure with a wide opening and a narrow slot bottom, the positioning wedge is arranged on the inclined side wall of the slot, so that a positioning space for the plug is formed between the positioning wedge and the other side wall of the slot, the screw rods of at least two mounting bolts pass through the fixed plate and are fixedly connected to the movable plate, each mounting bolt is sleeved with a reset spring, and is pre-tightened by the fixed plate and the nut of the mounting bolt, and a distance sensor is fixedly arranged on the fixed plate for detecting the spacing distance between the movable plate and the fixed plate.

[0007] It also includes an installation box body, the position of the installation box body is fixed, and the fixing plate is hingedly arranged on the installation box body and locked by a lock.

[0008] A power supply and a speaker are arranged in the installation box body. The power supply is electrically connected to the power supply end of the distance sensor, and the speaker is electrically connected to the output end of the distance sensor.

[0009] The cross-section of the positioning wedge is an inverted right-angled trapezoidal structure, and the inclination angle of the inclined surface is adapted to the inclination angle of the inclined side wall of the slot. The positioning wedge is fitted onto the inclined side wall of the slot through the inclined surface, so that a positioning space for the plug is formed between the vertical surface of the positioning wedge and the other side wall of the slot.

[0010] The positioning wedges are made of rubber.

[0011] The number of the mounting bolts is two, and the distance sensor is arranged between the two mounting bolts.

[0012] The distance sensor is fixedly mounted on the fixing plate by threaded engagement.

[0013] The present invention also provides a method for detecting a workpiece using any of the above-mentioned wiring harness plug-in position detection devices, comprising the following steps:

[0014] 1) Take the plug with the wiring harness connected, install it in the slot of the movable plate, and squeeze the positioning wedge downward to fix the position of the plug;

[0015] 2) Manually pull the wiring harness on the plug;

[0016] 3) If the distance sensor sends a signal and the wiring harness is not detached from the plug, the test is qualified. If the distance sensor does not send a signal and the wiring harness is loose or detached from the plug, the test is unqualified.

[0017] The above technical solution has the following beneficial effects:

[0018] 1. A wiring harness plug-in detection device comprises a fixed plate, a movable plate, a positioning wedge, and at least two mounting bolts. The movable plate is provided with a slot, at least one side wall of the slot is an inclined surface, so that the cross section of the slot is a trapezoidal structure with a wide opening and a narrow slot bottom, and the positioning wedge is provided on the inclined side wall of the slot, so that a positioning space for the plug is formed between the positioning wedge and the other side wall of the slot, that is, the width of the positioning space can be adjusted by matching the positioning wedge with the inclined side wall of the slot (the height of the positioning wedge), so as to meet the purpose of clamping and positioning plugs of different specifications and then performing plug-in detection, and the structure is simple, the operation is convenient, and the adaptability is wide. The screw rods of at least two mounting bolts pass through the fixed plate and are fixedly connected to the movable plate. A reset spring is sleeved on each mounting bolt and pre-tightened by the fixed plate and the nut of the mounting bolt. That is, when a distance space is generated between the movable plate and the fixed plate, the reset spring continues to be compressed, so that the resistance of the movable plate moving away from the fixed plate gradually increases linearly. In addition, the pre-tightening length of the reset spring can be different by adjusting the thread matching length between the mounting bolt and the movable plate, so that the resistance of the movable plate moving away from the fixed plate can also be adjusted according to the requirements of different products, meeting the needs of more workpieces plug-in detection. A distance sensor is fixedly arranged on the fixed plate to detect the spacing distance between the movable plate and the fixed plate. After adjusting the matching length of the mounting bolt for a certain type of workpiece, the workpiece to be detected is fixed in the slot of the movable plate by using a positioning wedge, and the wiring harness is pulled. The force between the wiring harness and the plug is fed back by the distance sensor. When a fixed value is reached, it is judged that the workpiece to be detected is plugged in place and qualified.

[0019] 2. It also includes an installation box body, the position of the installation box body is fixed, the fixing plate is hingedly arranged on the installation box body and locked by a lock, the installation box body is provided with a power supply and a speaker, the power supply is electrically connected to the power supply end of the distance sensor, and the speaker is electrically connected to the output end of the distance sensor, so that the detection device is integrated into one, and it is convenient to install and maintain. In addition, the speaker generates an indication that a fixed value has been reached, which is beneficial for the operator to judge the detection result.

[0020] 3. The distance sensor is fixed on the fixed plate through threaded fitting, so that the position of the distance sensor can be adjusted to meet the actual needs of the enterprise.

[0021] 4. The detection method of the present invention, after the detection workpiece is detachably fixed on the movable plate, the distance between the movable plate and the fixed plate is generated by manually pulling the workpiece harness. The distance is detected by the position sensor. When it reaches the preset value, it can be judged that the tension of the harness reaches the preset value. If the harness does not separate from the plug, it means that the connection strength between the harness and the plug meets the standard, which means that the harness is plugged in place. If the preset value is not reached, the harness is separated from the plug, which means it is unqualified. The detection process is simple and reliable, and the preset value can be adjusted according to different workpieces to be tested, and it has wide adaptability.

[0022] Further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a detection schematic diagram of the present invention.

[0025] In the accompanying drawings, 1 is a fixed plate, 2 is a movable plate, 3 is a positioning wedge, 4 is a mounting bolt, 5 is a slot, 6 is a positioning space, 7 is a reset spring, 8 is a distance sensor, and 9 is a mounting box. DETAILED DESCRIPTION

[0026] Example 1

[0027] See also Figure 1 The wiring harness plug-in detection device comprises a fixed plate 1, a movable plate 2, a positioning wedge 3, and at least two mounting bolts 4. A slot 5 is arranged on the movable plate 2, and at least one side wall of the slot 5 is an inclined surface, so that the cross section of the slot is a trapezoidal structure with a wide opening and a narrow bottom. In this embodiment, one side wall of the slot is an inclined surface, and the angle between the inclined side wall and the other vertical side wall is small. Usually, in order to ensure the friction force, the inclined side wall is also set to a sand surface. The positioning wedge 3 is arranged on the inclined side wall of the slot, so that a positioning space 6 of the plug is formed between the positioning wedge and the other side wall of the slot. In this embodiment, the cross section of the positioning wedge 3 is an inverted right-angled trapezoidal structure, and the inclination angle of the inclined surface is adapted to the inclination angle of the inclined side wall of the slot. The positioning wedge is attached to the inclined side wall of the slot through the inclined surface, so that a positioning space of the plug is formed between the vertical surface of the positioning wedge and the other side wall of the slot. In order to avoid damage to the plug to be detected, the positioning wedge can be made of rubber. The screw rods of at least two mounting bolts 4 pass through the fixed plate 1 and are fixedly connected to the movable plate 2. A reset spring 7 is sleeved on each mounting bolt 4 and is pre-tightened by the fixed plate 1 and the nut of the mounting bolt. Usually, the number of mounting bolts is designed to be two. A distance sensor 8 is fixedly arranged on the fixed plate 1 for detecting the spacing distance between the movable plate 2 and the fixed plate 1. In this embodiment, the distance sensor is installed on the fixed plate by threaded fitting and is located between the two mounting bolts. Specifically, it also includes a mounting box body 9. The position of the mounting box body 9 is fixed. The fixed plate 1 is hingedly arranged on the mounting box body 9 and locked by a lock. A power supply and a speaker are arranged in the mounting box body 9. The power supply is electrically connected to the power supply end of the distance sensor, and the speaker is electrically connected to the output end of the distance sensor.

[0028] Example 2

[0029] See also Figure 2The method for detecting a workpiece using the wiring harness plug-in position detection device of embodiment 1 comprises the following steps:

[0030] 1) First prepare the workpiece sample to be tested, ensure that the wiring harness is plugged in place, adjust the thread matching length between the mounting bolt and the movable plate, and the thread matching length between the distance sensor and the fixed plate, assemble the sample plug in the slot, and clamp it with the positioning wedge to fix its position, then manually pull the wiring harness on the plug to drive the movable plate away from the fixed plate until the connection strength standard is reached. At the calibrated distance, the sensor detects and sends a signal to control the speaker to sound;

[0031] 2) Take the plug workpiece with the wiring harness to be tested, assemble it in the slot of the movable plate, and press the positioning wedge downward to fix the position of the plug;

[0032] 3) Manually pull the wiring harness on the plug;

[0033] 4) If the horn sounds and the wiring harness is not detached from the plug, the test is qualified. If the distance sensor does not send a signal and the wiring harness is loose or detached from the plug, the test is unqualified.

Claims

1. A wiring harness plug-in detection device, characterized in that: The invention comprises a fixed plate (1), a movable plate (2), a positioning wedge (3), and at least two mounting bolts (4); the movable plate (2) is provided with a slot (5); at least one side wall of the slot (5) is an inclined surface, so that the cross section of the slot is a trapezoidal structure with a wide opening and a narrow slot bottom; the positioning wedge (3) is arranged on the inclined side wall of the slot, so that a positioning space (6) for the plug is formed between the positioning wedge and the other side wall of the slot; the screw rods of at least two mounting bolts (4) pass through the fixed plate (1) and are fixedly connected to the movable plate (2); each mounting bolt (4) is sleeved with a reset spring (7); and the fixed plate (1) and the mounting bolt (4) are connected to each other. The nuts of the bolts are pre-tightened. A distance sensor (8) is fixedly arranged on the fixing plate (1) for detecting the spacing distance between the movable plate (2) and the fixing plate (1). The distance sensor feeds back the force between the wiring harness and the plug. When a fixed value is reached, it is judged that the workpiece to be detected is properly plugged in. The fixing plate (1) also includes a mounting box (9). The position of the mounting box (9) is fixed. The fixing plate (1) is hingedly arranged on the mounting box (9) and locked by a lock. A power supply and a speaker are arranged in the mounting box (9). The power supply is electrically connected to the power supply end of the distance sensor, and the speaker is electrically connected to the output end of the distance sensor.

2. The wiring harness plug-in detection device according to claim 1, characterized in that: The cross section of the positioning wedge (3) is an inverted right-angled trapezoidal structure, and the inclination angle of the inclined surface is adapted to the inclination angle of the inclined surface side wall of the slot. The positioning wedge is fitted on the inclined surface side wall of the slot via the inclined surface, so that a positioning space for the plug is formed between the vertical surface of the positioning wedge and the other side wall of the slot.

3. The wiring harness plug-in detection device according to claim 1 or 2, characterized in that: The positioning wedge (3) is made of rubber.

4. The wiring harness plug-in detection device according to claim 1, characterized in that: The number of the mounting bolts (4) is two, and the distance sensor (8) is arranged between the two mounting bolts (4).

5. The wiring harness plug-in detection device according to claim 1, characterized in that: The distance sensor (8) is fixedly mounted on the fixing plate (1) by means of threaded engagement.

6. A method for detecting a workpiece using the wiring harness plug-in position detection device according to any one of claims 1 to 5, characterized in that: The following steps are involved: 1) Take the plug with the wiring harness connected, install it in the slot of the movable plate, and squeeze the positioning wedge downward to fix the position of the plug; 2) Manually pull the wiring harness on the plug; 3) If the distance sensor sends a signal and the wiring harness is not detached from the plug, the test is qualified. If the distance sensor does not send a signal and the wiring harness is loose or detached from the plug, the test is unqualified.

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