A tensile test bench for automobile wiring harnesses

Abstract

This utility model discloses a tensile testing bench for automotive wiring harnesses, including a test support platform. A pair of C-shaped plates are slidably connected to the upper surface of the test support platform. A lifting plate is fixedly connected to the surface of each C-shaped plate. A through hole is formed on the surface of the lifting plate, and a screw is threaded into the inner wall of the through hole. A laser receiver and a laser emitter are fixedly connected to the surface of one of the lifting plates. This utility model adjusts the position of a pair of arc-shaped protrusions by inserting positioning pins into positioning slots at different positions, thereby controlling the displacement distance of the pair of C-shaped plates and adjusting the tensile strength of the wiring harness. The flexible thin plate moves and contacts the surface of the wiring harness, causing the wiring harness to deform under force. Under the obstruction of the wiring harness, the flexible thin plate bends and deforms, then separates, achieving the effect of applying force and pulling. When the wiring harness breaks, it droops, and the laser receiver receives and senses the laser emitted by the laser emitter, thus determining that the wiring harness has broken.

Description

Technical Field

[0001] This utility model relates to the technical field of wire harness testing devices, and in particular to a tensile testing bench for automotive wire harnesses. Background Technology

[0002] Automotive wiring harnesses are the main network of automotive circuits; without wiring harnesses, there would be no automotive circuits. A wiring harness is an assembly that connects circuits by crimping copper contact terminals (connectors) to wires and cables, then molding an insulator or adding a metal shell, and finally bundling the wires together.

[0003] Before mass production, automotive wiring harnesses require tensile testing of sample harnesses to ensure that the final manufactured harnesses meet the required standards. The existing testing method involves using a pair of cylinders to pull the harnesses fixed at both ends to observe for breakage. This method requires the synchronous operation of a pair of cylinders, resulting in high equipment costs. Furthermore, the testing method is relatively simple, only able to test the tensile strength in the horizontal direction, and cannot effectively adjust the tensile stress. Therefore, a tensile testing bench for automotive wiring harnesses is needed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a tensile testing bench for automotive wiring harnesses.

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

[0006] A tensile testing stand for automotive wiring harnesses includes a test support platform. A pair of C-shaped plates are slidably connected to the upper surface of the test support platform. A lifting plate is fixedly connected to the surface of the C-shaped plates. A through hole is formed on the surface of the lifting plate. A screw is threaded to the inner wall of the through hole. A laser receiver and a laser emitter are fixedly connected to the surface of one of the lifting plates. The height of the laser receiver and laser emitter corresponds to the height of the through hole. An adjustment and testing mechanism is installed on the upper surface of the test support platform.

[0007] Preferably, the adjustment and testing mechanism includes a pair of fixed plates fixedly connected to the upper surface of the test support platform, and spring telescopic rods are fixedly connected to both sides of the pair of fixed plates. The end of the spring telescopic rod away from the fixed plate is fixedly connected to the surface of the C-shaped plate.

[0008] Furthermore, a support plate is fixedly connected to the surface of the test support platform, and a motor is fixedly connected to the surface of the support plate. The output end of the motor passes through the upper surface of the test support platform and is fixedly connected to a rotating arc plate.

[0009] Preferably, a pair of U-shaped arc plates are slidably connected to the inner wall of the rotating arc plate, and arc-shaped protrusions are fixedly connected to the surface of the U-shaped arc plates. A sliding plate is slidably connected to the inner wall of the rotating arc plate, and one end of the sliding plate is fixedly connected to the surface of the U-shaped arc plate.

[0010] Furthermore, a fixed plate is fixedly connected to the inner wall of the rotating arc plate, and a plurality of positioning grooves are provided on the upper surface of the fixed plate. One of the positioning grooves is connected to the same positioning pin with the inner wall of the slide plate, and the positioning pin is adapted to the positioning groove.

[0011] Preferably, a positioning rod is fixedly connected to the upper surface of the fixed plate, and a tough thin plate is fixedly connected to the top end of the positioning rod, the height of the tough thin plate being higher than the height of the through hole.

[0012] The beneficial effects of this utility model are as follows:

[0013] By inserting positioning pins into positioning slots at different positions to adjust the position of a pair of arc-shaped protrusions, the displacement distance of a pair of C-shaped plates is controlled, and the different tensile strengths of the wire harness are adjusted. The movement of the tough thin plate contacts the surface of the wire harness, causing the wire harness to deform under force. Under the obstruction of the wire harness, the tough thin plate bends and deforms and then separates, achieving the effect of applying force and pulling. When the wire harness breaks, the wire harness droops, and the laser receiver receives and senses the laser emitted by the laser emitter, thereby determining that the wire harness has broken. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a tensile testing bench for automotive wiring harnesses proposed in this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of the C-shaped plate in a tensile testing bench for automotive wiring harnesses proposed in this utility model.

[0016] Figure 3 This utility model proposes a tensile testing bench for automotive wiring harnesses. Figure 2 Enlarged structural diagram at point A;

[0017] Figure 4 This is a three-dimensional structural diagram of the U-shaped arc plate and arc-shaped protrusion in a tensile testing bench for automotive wiring harnesses proposed in this utility model.

[0018] In the diagram: 1. Test support platform; 2. Rotating arc plate; 3. Fixed plate; 4. Spring telescopic rod; 5. C-shaped plate; 6. Lifting plate; 7. Fixed plate; 8. Positioning rod; 9. Tough thin plate; 10. Screw; 11. Through hole; 12. Laser emitter; 13. Laser receiver; 14. Motor; 15. U-shaped arc plate; 16. Arc-shaped protrusion; 17. Slide plate; 18. Positioning pin; 19. Positioning groove; 20. Support plate. Detailed Implementation

[0019] 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.

[0020] Reference Figures 1-4 A tensile testing bench for automotive wiring harnesses includes a test support platform 1. A pair of C-shaped plates 5 are slidably connected to the upper surface of the test support platform 1. A lifting plate 6 is fixedly connected to the surface of the C-shaped plates 5. A through hole 11 is opened on the surface of the lifting plate 6. A screw 10 is threadedly connected to the inner wall of the through hole 11. A laser receiver 13 and a laser emitter 12 are fixedly connected to the surface of one of the lifting plates 6. The height of the laser receiver 13 and the laser emitter 12 corresponds to the height of the through hole 11. An adjustment and testing mechanism is installed on the upper surface of the test support platform 1.

[0021] By setting up a laser receiver 13 and a laser emitter 12, it is determined whether the wire harness breaks during the stretching process. By setting up a lifting plate 6, the wire harness is subjected to force and stretching. By setting up a through hole 11, the wire harness is provided with positioning space for clamping. By setting up a screw 10, one end of the screw 10 presses against the surface of the wire harness to maintain stability. By setting up an adjustment detection mechanism, the stretching stroke is adjusted to detect the tensile strength of the wire harness under different conditions.

[0022] In this utility model, reference Figure 1 The adjustment and testing mechanism includes a pair of fixed plates 3 fixedly connected to the upper surface of the test support platform 1. Spring telescopic rods 4 are fixedly connected to both sides of the pair of fixed plates 3. The end of the spring telescopic rod 4 away from the fixed plate 3 is fixedly connected to the surface of the C-shaped plate 5.

[0023] By setting the spring telescopic rod 4, the C-shaped plate 5 is driven to slide and reset.

[0024] In this utility model, reference Figure 4 A support plate 20 is fixedly connected to the surface of the test support platform 1, and a motor 14 is fixedly connected to the surface of the support plate 20. The output end of the motor 14 passes through the upper surface of the test support platform 1 and is fixedly connected to a rotating arc plate 2.

[0025] By setting up a support plate 20 and installing a motor 14, the rotating arc plate 2 is driven to rotate.

[0026] In this utility model, reference Figure 4 A pair of U-shaped arc plates 15 are slidably connected to the inner wall of the rotating arc plate 2. Arc-shaped protrusions 16 are fixedly connected to the surface of the U-shaped arc plates 15. A sliding plate 17 is slidably connected to the inner wall of the rotating arc plate 2. One end of the sliding plate 17 is fixedly connected to the surface of the U-shaped arc plate 15.

[0027] By setting the U-shaped arc plate 15, the position of the arc protrusion 16 is adjusted, and by setting the sliding plate 17, which cooperates with the positioning pin 18, the position of the arc protrusion 16 is limited.

[0028] In this utility model, reference Figure 4 The inner wall of the rotating arc plate 2 is fixedly connected to a fixed plate 7. The upper surface of the fixed plate 7 is provided with multiple positioning grooves 19. One of the positioning grooves 19 is connected to the inner wall of the slide plate 17 with the same positioning pin 18. The positioning pin 18 is compatible with the positioning groove 19.

[0029] By setting a positioning pin 18, which cooperates with the positioning groove 19, the position of the slide plate 17 is limited and kept stable.

[0030] In this utility model, reference Figure 2 A positioning rod 8 is fixedly connected to the upper surface of the fixed plate 7, and a tough thin plate 9 is fixedly connected to the top of the positioning rod 8. The height of the tough thin plate 9 is higher than the height of the through hole 11.

[0031] By setting the positioning rod 8, the tough thin plate 9 is supported. When rotating, the tough thin plate 9 contacts the surface of the wire harness, giving the wire harness another pulling force, causing the wire harness to deform under force.

[0032] Working principle: After placing the wire harness to be tested into the through hole 11, the wire harness is clamped by rotating the screw 10. At this time, the motor 14 is started. The output end of the motor 14 drives the rotating arc plate 2 to rotate. The rotating arc plate 2 drives the U-shaped arc plate 15 and the arc-shaped protrusion 16 to rotate. When the surfaces of the rotating arc plate 2, the U-shaped arc plate 15 and the arc-shaped protrusion 16 come into contact with the surface of the C-shaped plate 5, they drive the pair of C-shaped plates 5 to move away from each other. The movement of the C-shaped plates 5 drives the pair of lifting plates 6 to move away from each other, thereby stretching the wire harness for testing. The pair of C-shaped plates 5 are reset by the spring telescopic rod 4, and the positioning pin 18 can be inserted. The positions of a pair of arc-shaped protrusions 16 are adjusted in the positioning grooves 19 at different locations, thereby controlling the displacement distance of a pair of C-shaped plates 5. The fixed plate 7 rotates with the rotating arc plate 2, driving the positioning rod 8, which is eccentrically mounted on the fixed plate 7, to rotate. During rotation, the tough thin plate 9 contacts the surface of the wire harness, giving the wire harness another pulling force, causing the wire harness to deform under force. Under the action of the wire harness blocking, the tough thin plate 9 bends and deforms and separates, achieving the effect of applying force and pulling. When the wire harness breaks, the wire harness droops, and the laser receiver 13 receives and senses the laser emitted by the laser emitter 12, thereby determining that the wire harness is broken.

[0033] 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. A tensile testing bench for automotive wiring harnesses, comprising a test support platform (1), characterized in that, A pair of C-shaped plates (5) are slidably connected to the upper surface of the test support platform (1). A lifting plate (6) is fixedly connected to the surface of the C-shaped plate (5). A through hole (11) is opened on the surface of the lifting plate (6). A screw (10) is threadedly connected to the inner wall of the through hole (11). A laser receiver (13) and a laser emitter (12) are fixedly connected to the surface of one of the lifting plates (6). The height of the laser receiver (13) and the laser emitter (12) corresponds to that of the through hole (11). An adjustment and detection mechanism is installed on the upper surface of the test support platform (1).

2. The tensile testing bench for automotive wiring harnesses according to claim 1, characterized in that, The adjustment and testing mechanism includes a pair of fixed plates (3) fixedly connected to the upper surface of the test support platform (1). Spring telescopic rods (4) are fixedly connected to both sides of the pair of fixed plates (3). The end of the spring telescopic rod (4) away from the fixed plate (3) is fixedly connected to the surface of the C-shaped plate (5).

3. The tensile testing bench for automotive wiring harnesses according to claim 1, characterized in that, A support plate (20) is fixedly connected to the surface of the test support platform (1), and a motor (14) is fixedly connected to the surface of the support plate (20). The output end of the motor (14) passes through the upper surface of the test support platform (1) and is fixedly connected to a rotating arc plate (2).

4. The tensile testing bench for automotive wiring harnesses according to claim 3, characterized in that, The inner wall of the rotating arc plate (2) is slidably connected to a pair of U-shaped arc plates (15), and the surface of the U-shaped arc plates (15) is fixedly connected to an arc-shaped protrusion (16). The inner wall of the rotating arc plate (2) is slidably connected to a sliding plate (17), and one end of the sliding plate (17) is fixedly connected to the surface of the U-shaped arc plate (15).

5. A tensile testing bench for automotive wiring harnesses according to claim 3, characterized in that, The inner wall of the rotating arc plate (2) is fixedly connected to a fixed plate (7). The upper surface of the fixed plate (7) is provided with multiple positioning grooves (19). One of the positioning grooves (19) is connected to the inner wall of the slide plate (17) with the same positioning pin (18). The positioning pin (18) is adapted to the positioning groove (19).

6. A tensile testing bench for automotive wiring harnesses according to claim 5, characterized in that, A positioning rod (8) is fixedly connected to the upper surface of the fixed plate (7), and a tough thin plate (9) is fixedly connected to the top of the positioning rod (8). The height of the tough thin plate (9) is higher than the height of the through hole (11).

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