Automobile wire harness anti-vibration test device

Abstract

The utility model discloses a kind of automobile wiring harness shock resistance testing devices, including operation platform, bottom plate is provided in operation platform top, vibration mechanism is provided in operation platform top for vibration bottom plate, vibration sensor is installed in the middle of bottom plate top, two first support plates are fixed symmetrically in bottom plate top, the side wall of two first support plates is all penetrated by rotating shaft, the one end of two rotating shafts is all fixed with disc, rotating mechanism for rotating two discs is provided in bottom plate bottom. The utility model is in vibration state by vibration mechanism cooperation bottom plate to make automobile wiring harness, at the same time, by moving mechanism arc plate is moved to and fro along wiring harness surface, simulate the environment that wiring harness and other components of car occur friction in use process, while cooperating the real-time feedback of vibration sensor, the complex vibration environment that automobile wiring harness suffers in driving process can be truly simulated This real simulation helps more accurately evaluate the shock resistance performance of wiring harness.

Description

Technical Field

[0001] This utility model relates to the field of automotive wiring harness testing technology, and in particular to an automotive wiring harness vibration resistance testing device. Background Technology

[0002] Automotive wiring harnesses are cable groups used to connect various electronic devices and systems in a vehicle. They typically consist of multiple wires, connectors, insulation materials, and other protective components. With the rapid development of automotive electronics technology, more and more electronic devices and systems are integrated into vehicles. As an important component connecting these electronic devices, the reliability of automotive wiring harnesses directly affects the safety and functionality of the vehicle. Therefore, quality control and performance testing of automotive wiring harnesses are particularly important.

[0003] Traditional vibration resistance testing of automotive wiring harnesses mainly relies on conventional laboratory equipment. These devices typically employ static or semi-dynamic testing methods, which can simulate certain vibration environments. However, in practical applications, they often cannot fully reproduce the complex vibration conditions experienced by a vehicle during operation. This leads to a discrepancy between test results and actual usage conditions, which may cause wiring harness malfunctions during actual operation and affect the normal operation of the vehicle. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a vibration resistance testing device for automotive wiring harnesses.

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

[0006] A vibration resistance testing device for automotive wiring harnesses includes an operating platform with a base plate on top. A vibration mechanism for vibrating the base plate is located on the top of the operating platform. A vibration sensor is installed at the center of the top of the base plate. Two first support plates are symmetrically fixed to the top of the base plate. A rotating shaft passes through the sidewalls of both first support plates, and a disc is fixed to one end of each rotating shaft. A rotating mechanism for rotating the two discs is located at the bottom of the base plate. Fixing mechanisms for fixing the automotive wiring harness are located on the inner sidewalls of the two discs. A top plate is located on the top of the base plate, and an arc-shaped plate is located on the top of the top plate. A moving mechanism for moving the arc-shaped plate is located at the bottom of the top plate. During use, the device vibrates the automotive wiring harness by cooperating with the base plate through the vibration mechanism. Simultaneously, the moving mechanism moves the arc-shaped plate back and forth along the surface of the wiring harness, simulating the friction environment between the wiring harness and other automotive components during use. Combined with real-time feedback from the vibration sensor, this device can realistically simulate the complex vibration environment experienced by the automotive wiring harness during driving. This realistic simulation helps to more accurately evaluate the vibration resistance performance of the wiring harness.

[0007] Preferably, the vibration mechanism includes four slide rods, which are respectively fixed at the four corners of the top of the operating table, and one end of each slide rod penetrates through the top of the base plate. Each slide rod is fixed to the top plate, and a first spring is sleeved on the side wall of each slide rod. The two ends of each first spring are fixed to the operating table and the base plate, respectively. A vibration motor is fixed at the bottom of the base plate. When the vibration motor is powered on, it vibrates, which, together with the four slide rods and the four first springs, causes the base plate and the vibration sensor to vibrate, thereby causing the automotive wiring harness to vibrate. Since the vibration sensor is electrically connected to a controller, when the vibration sensor vibrates and generates a signal, it transmits the signal to the controller. After receiving the signal, the controller controls the vibration of the vibration motor, which helps to more accurately evaluate the vibration resistance performance of the wiring harness.

[0008] Preferably, the fixing mechanism includes two fourth support plates, which are symmetrically fixed to the inner wall of one of the discs. The inner walls of the two fourth support plates are rotatably connected to the same bidirectional lead screw. A second motor is fixed to the outer wall of one of the fourth support plates, and the output shaft of the second motor is fixed to the bidirectional lead screw. Two lead screw nuts are slidably connected to the inner wall of the disc. Both lead screw nuts are sleeved on the side wall of the bidirectional lead screw and are adapted to the bidirectional lead screw. A support plate is fixed to one end of each of the two lead screw nuts. A clamping plate is fixed to the inner wall of each of the two support plates. A groove is opened on the side wall of one clamping plate, and a protrusion is fixed on the side wall of the other clamping plate. The protrusion and the groove are adapted to each other. By driving the two second motors to drive the two bidirectional lead screws to rotate, under the constraint of the two discs, the four lead screw nuts move closer to each other in pairs. The four support plates drive the four clamping plates to move closer to each other in pairs until the two protrusions enter the two grooves respectively, thus squeezing and fixing the two ends of the wire harness.

[0009] Preferably, the rotating mechanism includes two first synchronous pulleys, each fitted with a first synchronous pulley. Two second support plates are symmetrically fixed at both ends of the bottom of the base plate. A common connecting shaft is provided through the outer walls of the two second support plates. Second synchronous pulleys are fitted onto the side walls of both ends of the two connecting shafts. Through holes are provided at both ends of the top of the base plate. Synchronous belts are installed inside each of the through holes. One end of each synchronous belt is fitted onto the side wall of the two first synchronous pulleys, and the other end is fitted onto the side wall of the two second synchronous pulleys. A first motor is fixed to the bottom of the base plate, and the output shaft and connecting shaft of the first motor are fixed. The moving mechanism includes two third support plates, symmetrically fixed at both ends of the bottom of the top plate. A common guide rod is fixed to the inner side wall of each of the two third support plates. A common reciprocating screw is rotatably connected to the inner side wall of each of the two third support plates, and the guide rod and the reciprocating screw are arranged in parallel. A common screw slider is fitted onto the side wall of the guide rod and the reciprocating screw. The inner circumferential surface of the screw slider is radially... A pin hole is provided, and a crescent-shaped pin that mates with a reciprocating lead screw is installed inside the pin hole. A third motor is fixed to the outer wall of one of the third support plates, and the output shaft of the third motor is fixed to the reciprocating lead screw. A sleeve is fixed to the bottom of the lead screw slider, and a circular block is slidably connected to the inner wall of the sleeve. A connecting rod is fixed to the bottom of the circular block and passes through the bottom of the sleeve. The connecting rod is fixed to the arc plate. A second spring is provided inside the sleeve and is located above the circular block. The third motor drives the reciprocating lead screw to rotate. Under the restriction of the guide rod, the lead screw slider moves back and forth along the direction of the guide rod. With the help of the sleeve and the connecting rod, the arc plate moves back and forth along the surface of the wire harness, simulating the phenomenon of friction between the wire harness and other automotive parts during use. At the same time as the friction, the first motor drives the connecting shaft to rotate. With the help of two second synchronous pulleys, two synchronous belts, and two first synchronous pulleys, the two rotating shafts are rotated, which in turn drive the two discs to rotate, so that the wire harness is in a rotating state. This allows the wire harness to fully contact the arc plate, further improving the detection effect.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. During use, this device uses a vibration mechanism in conjunction with a base plate to cause the automotive wiring harness to vibrate. At the same time, a moving mechanism drives an arc-shaped plate to move back and forth along the surface of the wiring harness, simulating the environment in which the wiring harness rubs against other parts of the vehicle during use. With the real-time feedback from the vibration sensor, it can realistically simulate the complex vibration environment that the automotive wiring harness suffers during driving. This realistic simulation helps to more accurately evaluate the vibration resistance performance of the wiring harness.

[0012] 2. During testing, the rotating mechanism drives two discs to rotate, causing the wiring harness to be in a rotating state. This allows the surface of the automotive wiring harness to fully contact and rub against the curved plate, further improving the accuracy of the test results. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an automotive wiring harness vibration resistance testing device proposed in this utility model;

[0014] Figure 2 This is a cross-sectional schematic diagram of the operating platform, base plate, and top plate of an automotive wiring harness vibration resistance testing device proposed in this utility model.

[0015] Figure 3 This is a schematic diagram of the rotating mechanism of an automotive wiring harness vibration resistance testing device proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the fixing mechanism of an automotive wiring harness vibration resistance testing device proposed in this utility model;

[0017] Figure 5 This is a schematic diagram of the vibration mechanism of an automotive wiring harness vibration resistance testing device proposed in this utility model;

[0018] Figure 6 This is a schematic diagram of the moving mechanism of an automotive wiring harness vibration resistance testing device proposed in this utility model;

[0019] Figure 7 This is a schematic cross-sectional view of the sleeve of an automotive wiring harness vibration resistance testing device proposed in this utility model.

[0020] In the diagram: 1. Operating platform; 2. Base plate; 3. Top plate; 4. Vibration sensor; 5. Slide rod; 6. First spring; 7. First support plate; 8. Disc; 9. Third support plate; 10. Second support plate; 11. Connecting shaft; 12. First motor; 14. Rotating shaft; 15. First synchronous pulley; 16. Synchronous belt; 17. Second synchronous pulley; 18. Fourth support plate; 19. Bidirectional lead screw; 20. Lead screw nut; 21. Second motor; 22. Support plate; 23. Clamping plate; 24. Through hole; 25. Vibration motor; 26. Guide rod; 27. Reciprocating lead screw; 28. Lead screw slider; 29. ​​Third motor; 30. Sleeve; 31. Connecting rod; 32. Arc plate; 33. Circular block; 34. Second spring. Detailed Implementation

[0021] 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.

[0022] Reference Figures 1-7 A vibration resistance testing device for automotive wiring harnesses includes an operating platform 1, a base plate 2 on top of the operating platform 1, a vibration mechanism for vibrating the base plate 2 on top of the operating platform 1, a vibration sensor 4 installed at the center of the top of the base plate 2, two first support plates 7 symmetrically fixed on the top of the base plate 2, each first support plate 7 having a rotating shaft 14 penetrating its sidewall, and a disc 8 fixed to one end of each rotating shaft 14. A rotation mechanism for rotating the two discs 8 is provided at the bottom of the base plate 2, and a fixing mechanism for fixing the automotive wiring harness is provided on the inner sidewall of each disc 8. A top plate 3 is provided on top of the base plate 2. An arc-shaped plate 32 is provided on the top of the base plate 2, and a moving mechanism for moving the arc-shaped plate 32 is provided at the bottom of the top plate 3. During use, the device uses a vibration mechanism in conjunction with the base plate 2 to make the automotive wiring harness vibrate. At the same time, the moving mechanism drives the arc-shaped plate 32 to move back and forth along the surface of the wiring harness, simulating the environment in which the wiring harness rubs against other parts of the car during use. With the real-time feedback from the vibration sensor 4, the complex vibration environment suffered by the automotive wiring harness during driving can be realistically simulated. This realistic simulation helps to more accurately evaluate the vibration resistance performance of the wiring harness.

[0023] Furthermore, the vibration mechanism includes four slide rods 5, which are fixed at the four corners of the top of the operating table 1, and one end of each slide rod 5 passes through the top of the base plate 2. Each slide rod 5 is fixed to the top plate 3. Each slide rod 5 has a first spring 6 sleeved on its side wall, and the two ends of each first spring 6 are fixed to the operating table 1 and the base plate 2, respectively. A vibration motor 25 is fixed at the bottom of the base plate 2. When the vibration motor 25 is powered on, it vibrates, which, together with the four slide rods 5 and the four first springs 6, causes the base plate 2 and the vibration sensor 4 to be in a vibrating state, thereby causing the automotive wiring harness to be in a vibrating state. Since the vibration sensor 4 is electrically connected to a controller, when the vibration sensor 4 vibrates and generates a signal, it is transmitted to the controller. After receiving the signal, the controller controls the vibration of the vibration motor 25, which helps to more accurately evaluate the vibration resistance performance of the wiring harness.

[0024] Furthermore, the fixing mechanism includes two fourth support plates 18, which are symmetrically fixed to the inner wall of one of the discs 8. The inner walls of the two fourth support plates 18 are rotatably connected to the same bidirectional lead screw 19. A second motor 21 is fixed to the outer wall of one of the fourth support plates 18, and the output shaft of the second motor 21 is fixed to the bidirectional lead screw 19. Two lead screw nuts 20 are slidably connected to the inner wall of the disc 8. Both lead screw nuts 20 are sleeved on the side wall of the bidirectional lead screw 19, and both lead screw nuts 20 are adapted to the bidirectional lead screw 19. One end of each lead screw nut 20 is fixed with a support plate 22. The inner sidewalls of the two support plates 22 are fixed with clamping plates 23. One clamping plate 23 has a groove on its sidewall and the other clamping plate 23 has a protrusion on its sidewall. The protrusion and the groove are compatible. By driving the two second motors 21, the two bidirectional lead screws 19 are rotated respectively. Under the constraint of the two discs 8, the four lead screw nuts 20 move closer to each other in pairs. The four support plates 22 drive the four clamping plates 23 to move closer to each other in pairs until the two protrusions enter the two grooves respectively, and the two ends of the wire harness are squeezed and fixed.

[0025] Furthermore, the rotating mechanism includes two first synchronous pulleys 15, each fitted with a first synchronous pulley 17. Two second support plates 10 are symmetrically fixed at both ends of the bottom of the base plate 2. A common connecting shaft 11 is provided through the outer walls of the two second support plates 10. Second synchronous pulleys 17 are fitted onto the side walls of both ends of the two connecting shafts 11. Through holes 24 are provided at both ends of the top of the base plate 2. Synchronous belts 16 are installed inside each of the two through holes 24. One end of each synchronous belt 16 is fitted onto the side wall of the two first synchronous pulleys 15, and the other end of each synchronous belt 16 is fitted onto the two second synchronous pulleys. On the side wall 17, a first motor 12 is fixed to the bottom of the base plate 2, and the output shaft and connecting shaft 11 of the first motor 12 are fixed. The moving mechanism includes two third support plates 9, which are symmetrically fixed to the bottom ends of the top plate 3. The same guide rod 26 is fixed to the inner side wall of the two third support plates 9. The same reciprocating screw 27 is rotatably connected to the inner side wall of the two third support plates 9, and the guide rod 26 and the reciprocating screw 27 are arranged in parallel. The same screw slider 28 is sleeved on the side wall of the guide rod 26 and the reciprocating screw 27. The inner circumferential surface of the screw slider 28 is provided with a pin hole along its radial direction, and a screw is provided in the pin hole. The reciprocating screw 27 is fitted with a crescent-shaped pin. A third motor 29 is fixed to the outer wall of a third support plate 9, and the output shaft of the third motor 29 is fixed to the reciprocating screw 27. A sleeve 30 is fixed to the bottom of the screw slider 28. A circular block 33 is slidably connected to the inner wall of the sleeve 30. A connecting rod 31 is fixed to the bottom of the circular block 33 and extends through the bottom of the sleeve 30. The connecting rod 31 is fixed to the arc-shaped plate 32. A second spring 34 is installed inside the sleeve 30 and is located above the circular block 33. The third motor 29 drives the reciprocating screw 27 to rotate. The guide rod 26... Under the constraint, the lead screw slider 28 reciprocates along the direction of the guide rod 26, which, together with the sleeve 30 and the connecting rod 31, causes the arc plate 32 to move back and forth along the surface of the wire harness, simulating the phenomenon of friction between the wire harness and other automotive parts during use. At the same time as the friction, the first motor 12 drives the connecting shaft 11 to rotate, which, together with the two second synchronous pulleys 17, the two synchronous belts 16 and the two first synchronous pulleys 15, drives the two rotating shafts 14 to rotate, which in turn drives the two discs 8 to rotate, so that the wire harness is in a rotating state. This allows the wire harness to fully contact the arc plate 32, further improving the detection effect.

[0026] Working Principle: During use, the two ends of the automotive wiring harness to be tested are placed between the two sets of support plates 22, and the power switches of the two second motors 21 are turned on. The two second motors 21 drive the two bidirectional lead screws 19 to rotate. Under the constraint of the two discs 8, the four lead screw nuts 20 move closer to each other in pairs, which in turn drives the four clamping plates 23 to move closer to each other in pairs until the two protrusions enter the two grooves respectively, squeezing and fixing the two ends of the wiring harness. After fixing, the power switch of the vibration motor 25 is turned on. After the vibration motor 25 is powered on, it vibrates, which, together with the four slide rods 5 and the four first springs 6, makes the base plate 2 and the vibration sensor 4 vibrate, thereby making the automotive wiring harness vibrate. Since the vibration sensor 4 is electrically connected to a controller, when the vibration sensor 4 vibrates, it generates a signal that is transmitted to the controller, and the controller receives the signal. After the vibration of the vibration motor 25 is controlled, it helps to more accurately evaluate the vibration resistance of the wire harness. While the wire harness vibrates, the power switch of the third motor 29 is turned on, driving the third motor 29 to rotate the reciprocating screw 27. Under the constraint of the guide rod 26, the screw slider 28 moves back and forth along the direction of the guide rod 26. With the help of the sleeve 30 and the connecting rod 31, the arc plate 32 moves back and forth along the surface of the wire harness, simulating the phenomenon of friction between the wire harness and other parts of the car during use. At the same time as the friction, the power switch of the first motor 12 is turned on, driving the first motor 12 to rotate the connecting shaft 11. With the help of the two second synchronous pulleys 17, the two synchronous belts 16 and the two first synchronous pulleys 15, the two rotating shafts 14 are rotated, which in turn drive the two discs 8 to rotate, so that the wire harness is in a rotating state. This allows the wire harness to fully contact the arc plate 32, further improving the detection effect.

[0027] 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 vibration resistance testing device for automotive wiring harnesses, comprising an operating table (1), characterized in that, The top of the operating table (1) is provided with a base plate (2), and the top of the operating table (1) is provided with a vibration mechanism for vibrating the base plate (2). A vibration sensor (4) is installed in the middle of the top of the base plate (2). Two first support plates (7) are symmetrically fixed on the top of the base plate (2). A rotating shaft (14) runs through the side wall of each of the two first support plates (7). A disc (8) is fixed at one end of each of the two rotating shafts (14). A rotating mechanism for rotating the two discs (8) is provided at the bottom of the base plate (2). A fixing mechanism for fixing the automotive wiring harness is provided on the inner side wall of each of the two discs (8). A top plate (3) is provided on the top of the base plate (2). An arc plate (32) is provided on the top of the base plate (2). A moving mechanism for moving the arc plate (32) is provided at the bottom of the top plate (3).

2. The automotive wiring harness vibration resistance testing device according to claim 1, characterized in that, The vibration mechanism includes four slide rods (5), which are fixed at the four corners of the top of the operating table (1) and one end of each slide rod (5) passes through the top of the base plate (2). The four slide rods (5) are fixed to the top plate (3). The side walls of the four slide rods (5) are fitted with first springs (6), and the two ends of the four first springs (6) are fixed to the operating table (1) and the base plate (2) respectively. A vibration motor (25) is fixed at the bottom of the base plate (2).

3. The automotive wiring harness vibration resistance testing device according to claim 1, characterized in that, The fixing mechanism includes two fourth support plates (18), which are symmetrically fixed on the inner wall of one of the discs (8). The inner walls of the two fourth support plates (18) are rotatably connected to the same bidirectional lead screw (19). A second motor (21) is fixed on the outer wall of one of the fourth support plates (18), and the output shaft of the second motor (21) is fixed to the bidirectional lead screw (19). Two lead screw nuts (20) are slidably connected to the inner wall of the disc (8). Both lead screw nuts (20) are sleeved on the side wall of the bidirectional lead screw (19), and both lead screw nuts (20) are adapted to the bidirectional lead screw (19). A support plate (22) is fixed to one end of each of the two lead screw nuts (20). A clamping plate (23) is fixed to the inner wall of each of the two support plates (22). A groove is opened on the side wall of one of the clamping plates (23), and a protrusion is fixed on the side wall of the other clamping plate (23), and the protrusion and the groove are adapted to each other.

4. The automotive wiring harness vibration resistance testing device according to claim 1, characterized in that, The rotating mechanism includes two first synchronous pulleys (15), each of which is fitted with a first synchronous pulley (15). Two second support plates (10) are symmetrically fixed at both ends of the bottom of the base plate (2). The outer walls of the two second support plates (10) are connected by the same connecting shaft (11). The side walls of both ends of the two connecting shafts (11) are fitted with second synchronous pulleys (17). Both ends of the top of the base plate (2) are provided with through holes (24). The two through holes (24) are provided with synchronous belts (16). One end of each synchronous belt (16) is fitted on the side wall of the two first synchronous pulleys (15), and the other end of each synchronous belt (16) is fitted on the side wall of the two second synchronous pulleys (17). A first motor (12) is fixed at the bottom of the base plate (2), and the output shaft and connecting shaft (11) of the first motor (12) are fixed.

5. The automotive wiring harness vibration resistance testing device according to claim 1, characterized in that, The moving mechanism includes two third support plates (9), which are symmetrically fixed at both ends of the bottom of the top plate (3). The inner sidewalls of the two third support plates (9) are fixed with the same guide rod (26). The inner sidewalls of the two third support plates (9) are rotatably connected with the same reciprocating screw (27). The guide rod (26) and the reciprocating screw (27) are arranged in parallel. The sidewalls of the guide rod (26) and the reciprocating screw (27) are fitted with the same screw slider (28). The inner circumferential surface of the screw slider (28) is provided with a pin hole along its radial direction. The pin hole is provided with a crescent pin that cooperates with the reciprocating screw (27). The outer sidewall of one of the third support plates (9) is fixed with a third motor (29), and the output shaft of the third motor (29) is fixed with the reciprocating screw (27).

6. The automotive wiring harness vibration resistance testing device according to claim 5, characterized in that, The bottom of the lead screw slider (28) is fixed with a sleeve (30), and a circular block (33) is slidably connected to the inner side wall of the sleeve (30). A connecting rod (31) is fixed to the bottom of the circular block (33), and the connecting rod (31) passes through the bottom of the sleeve (30). The connecting rod (31) and the arc plate (32) are fixed. A second spring (34) is provided inside the sleeve (30), and the second spring (34) is located above the circular block (33).

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