Vibration resistance testing device for automobile wire harness

Abstract

The utility model relates to the field of automobile wire harness test equipment, and discloses an automobile wire harness vibration resistance test device, which comprises a rectangular bottom plate, a mounting shell is fixedly mounted on the top surface of the rectangular bottom plate, a vibration seat is movably arranged on the top surface of the mounting shell in a penetrating manner, and a vibration mechanism connected with the vibration seat is arranged in the mounting shell. Two fixing seats are fixedly mounted on the top surface of the vibration seat, after a wire harness penetrates through a V-shaped limiting groove, an operator rotates an adjusting screw rod to drive a pressing plate to move downwards, so that a pressing block enters the V-shaped limiting groove, the wire harness is fixed, it is ensured that the wire harness cannot move in the vibration testing process, and therefore the testing accuracy is improved; the V-shaped limiting groove of the device can adapt to automobile wire harnesses of different sizes, and a plurality of wire harnesses can be fixed at the same time through the downward movement of the pressing plate, so that the fixing effect is effectively improved, and the stability in the wire harness test is ensured.

Description

Technical Field

[0001] This application belongs to the technical field of automotive wiring harness testing equipment, specifically an automotive wiring harness vibration resistance testing device. Background Technology

[0002] Vibration resistance testing of automotive wiring harnesses is used to evaluate the ability of wiring harnesses to withstand vibration and shock during vehicle operation, in order to ensure their reliability and safety in harsh environments. The test is usually carried out on a vibration test bench, with one end of the wiring harness fixed and the other end connected to the corresponding load or equipment. Then, vibrations of different frequencies and amplitudes are applied to simulate the vibration conditions during vehicle operation.

[0003] For example, utility model patent CN221173806U discloses an automotive wiring harness vibration testing device, including a fixed frame, a support platform placed on the upper end of the fixed frame, a clamping assembly installed on the upper end of the support platform, a slide rod and a spring fixedly connected to the lower end of the support platform, support seats fixedly connected to both the left and right ends of the fixed frame, the slide rod passing through the support seat and slidably connected to the support seat, and the end of the spring away from the support platform being fixedly connected to the support seat; a reciprocating mechanism is installed inside the fixed frame, located directly below the support platform; the reciprocating mechanism includes a guide assembly, a dual-axis motor, a first bearing seat, a rotating shaft, a disc, a fixed shaft, a first connecting rod and a second connecting rod; the dual-axis motor is fixedly connected to the inside of the fixed frame through the fixed seat, the bearing seat is fixedly connected to the inside of the fixed frame, and the rotating shaft is rotatably connected to the inside of the bearing seat; this utility model can test wiring harnesses with vibrations of different amplitudes.

[0004] However, in actual use, it was found that the device uses the cooperation of clamping blocks, threaded shafts and fastening caps to fix the automotive wiring harness, so as to facilitate subsequent vibration testing of the automotive wiring harness.

[0005] However, the device requires tightening multiple fastening caps one by one during the process of fixing the automotive wiring harness, which is cumbersome and time-consuming. In addition, since the size of the arc groove at the bottom of the clamping block is fixed, when the outer diameter of the automotive wiring harness is smaller than the inner diameter of the arc groove, the wiring harness will not be securely fixed, causing it to shake inside the arc groove during vibration testing, thus affecting the accuracy of the test. Therefore, an automotive wiring harness vibration resistance testing device is provided. Utility Model Content

[0006] The purpose of this application is to provide an automotive wiring harness vibration resistance testing device in order to solve the problems mentioned above.

[0007] The technical solution adopted in this application is as follows: an automotive wiring harness vibration resistance testing device, including a rectangular base plate, a mounting housing fixedly installed on the top surface of the rectangular base plate, a vibration seat movably passing through the top surface of the mounting housing, a vibration mechanism connected to the vibration seat being provided inside the mounting housing, two fixed seats fixedly installed on the top surface of the vibration seat, and multiple V-shaped limiting grooves evenly spaced on the top surfaces of the two fixed seats, a U-shaped plate fixedly installed on the top surface of the fixed seats, a pressure plate being provided inside the U-shaped plate, a bearing fixedly installed near the center of the top surface of the pressure plate, an adjusting screw threadedly connected near the center of the top surface of the U-shaped plate, the bottom end of the adjusting screw being fixedly installed in the center of the bearing, and multiple clamping blocks corresponding to the V-shaped limiting grooves being fixedly installed on the bottom surface of the pressure plate.

[0008] In a preferred embodiment, two guide rods are movably inserted through the top surface of the U-shaped plate, and the bottom ends of the two guide rods are fixed to the top surface of the pressure plate.

[0009] In a preferred embodiment, a spring is fixedly installed on the inner bottom surface of the rectangular base plate, and one end of the spring is fixed to the bottom surface of the vibration seat.

[0010] In a preferred embodiment, a plurality of heat dissipation through holes are equally spaced on one side of the mounting housing.

[0011] In a preferred embodiment, a rubber pad is fixedly installed on the bottom surface of the rectangular base plate.

[0012] In a preferred embodiment, the top surface of the rectangular base plate has multiple fixing holes near the corners.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0014] 1. In this application, due to the adoption of the above-mentioned solution, after the wire harness passes through the V-shaped limiting groove, the operator rotates the adjusting screw to drive the pressure plate downward, thereby causing the clamping block to enter the V-shaped limiting groove to fix the wire harness and ensure that it will not move during the vibration test, thereby improving the accuracy of the test. The V-shaped limiting groove of this device can adapt to automotive wire harnesses of different sizes, and multiple wire harnesses can be fixed at the same time through the downward movement of the pressure plate, effectively improving the fixing effect and ensuring the stability of the wire harness during testing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 For the purposes of this application Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the internal structure of the mounting housing in this application;

[0018] Figure 4 This is a schematic diagram of the spring structure of this application.

[0019] The markings in the diagram are: 1. Rectangular base plate; 2. Mounting housing; 3. Vibration seat; 4. Vibration mechanism; 5. Fixed seat; 6. V-shaped limiting groove; 7. U-shaped plate; 8. Pressure plate; 9. Bearing; 10. Adjusting screw; 11. Clamping block; 12. Guide rod; 13. Spring; 14. Heat dissipation hole; 15. Rubber pad; 16. Fixing hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] refer to Figure 1 , Figure 2 and Figure 3 The vibration resistance testing device for automotive wiring harnesses includes a rectangular base plate 1, a mounting housing 2 fixedly mounted on the top surface of the rectangular base plate 1, a vibration seat 3 movably passing through the top surface of the mounting housing 2, and a vibration mechanism 4 connected to the vibration seat 3 inside the mounting housing 2. The vibration mechanism 4 consists of a motor, an eccentric wheel, and a hinge rod. When the motor runs, it drives the eccentric wheel to rotate. The rotation of the eccentric wheel is fixed to the bottom of the vibration seat 3 by the hinge rod, thereby realizing the reciprocating up and down movement of the hinge rod on the vibration seat 3, thus generating vibration. This design effectively facilitates the subsequent vibration resistance testing of automotive wiring harnesses.

[0022] refer to Figure 1 , Figure 2 and Figure 4 Two fixed seats 5 are fixedly installed on the top surface of the vibration seat 3, and multiple V-shaped limiting grooves 6 are evenly spaced on the top surface of the two fixed seats 5. The two fixed seats 5 make it easy for personnel to pass the car wiring harness through the inside of the V-shaped limiting groove 6, which facilitates the subsequent fixing of the car wiring harness inside the V-shaped limiting groove 6. The V-shaped limiting groove 6 can accommodate car wiring harnesses of different diameters, improving convenience.

[0023] refer to Figure 1 , Figure 2 and Figure 4A U-shaped plate 7 is fixedly installed on the top surface of the mounting base 5. A pressure plate 8 is set inside the U-shaped plate 7. A bearing 9 is fixedly installed on the top surface of the pressure plate 8 near the middle. An adjusting screw 10 is threadedly connected to the top surface of the U-shaped plate 7 near the middle. The bottom end of the adjusting screw 10 is fixedly installed in the middle of the bearing 9. Multiple clamping blocks 11 corresponding to the V-shaped limiting groove 6 are fixedly installed on the bottom surface of the pressure plate 8. When it is necessary to fix the automotive wiring harness inside the V-shaped limiting groove 6, first rotate the adjusting screw 10. The adjusting screw 10 drives the pressure plate 8 to move downward, so that the clamping blocks 11 enter the interior of the V-shaped limiting groove 6 and contact the outer surface of the automotive wiring harness, thereby facilitating the limiting and fixing of the automotive wiring harness and improving the stability of the automotive wiring harness during subsequent vibration testing.

[0024] refer to Figure 1 , Figure 2 and Figure 4 Two guide rods 12 are movably inserted through the top surface of the U-shaped plate 7, and the bottom ends of the two guide rods 12 are fixed to the top surface of the pressure plate 8; the guide rods 12 can improve the stability of the pressure plate 8 when adjusting its height.

[0025] refer to Figure 2 , Figure 3 and Figure 4 A spring 13 is fixedly installed on the inner bottom surface of the rectangular base plate 1, and one end of the spring 13 is fixed to the bottom surface of the vibrating seat 3; the spring 13 can buffer the vibration of the vibrating seat 3.

[0026] refer to Figure 1 , Figure 3 and Figure 4 Multiple heat dissipation holes 14 are evenly spaced on one side of the mounting housing 2. A rubber pad 15 is fixedly installed on the bottom surface of the rectangular base plate 1. Multiple fixing holes 16 are provided on the top surface of the rectangular base plate 1 near the corners. The multiple heat dissipation holes 14 facilitate the circulation of outside air and the air inside the mounting housing 2, which is convenient for heat dissipation. The rubber pad 15 can reduce the transmission of vibration through the rectangular base plate 1. The multiple fixing holes 16 facilitate the bolt fixing of the rectangular base plate 1.

[0027] The implementation principle of the automotive wiring harness vibration resistance testing device embodiment of this application is as follows: The operator first passes the automotive wiring harness to be tested through the V-shaped limiting groove 6, and then connects one end of the wiring harness to the detection device on the top surface of the rectangular base plate 1. This device can be an oscilloscope or other testing tool, which facilitates the feedback and recording of the automotive wiring harness test results. The other end of the wiring harness can be connected to a sensor or actuator to reflect its performance under actual working conditions. After the wiring harness passes through the V-shaped limiting groove 6, the operator rotates the adjusting screw 10 to drive the pressure plate 8 downward, thereby causing the clamping block 11 to enter the V-shaped limiting groove 6 to fix the wiring harness and ensure that it will not move during the vibration test, thereby improving the accuracy of the test. This device is not only simple in structure and easy to operate, but the V-shaped limiting groove 6 can also adapt to automotive wiring harnesses of different sizes and fix multiple wiring harnesses at the same time, effectively improving the fixing effect and ensuring the stability of the wiring harness in subsequent tests.

[0028] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A vibration resistance testing device for automotive wiring harnesses, comprising a rectangular base plate (1), characterized in that: The top surface of the rectangular base plate (1) is fixedly mounted with a mounting housing (2). The top surface of the mounting housing (2) is movably provided with a vibration seat (3). The inside of the mounting housing (2) is provided with a vibration mechanism (4) connected to the vibration seat (3). The top surface of the vibration seat (3) is fixedly mounted with two fixed seats (5). The top surfaces of the two fixed seats (5) are evenly spaced and have multiple V-shaped limiting grooves (6). The top surface of the fixed seat (5) is fixedly mounted with a U-shaped plate (7). The inside of the U-shaped plate (7) is provided with a pressure plate (8). The top surface of the pressure plate (8) is fixedly mounted with a bearing (9) near the middle. The top surface of the U-shaped plate (7) is threadedly connected with an adjusting screw (10) near the middle. The bottom end of the adjusting screw (10) is fixedly mounted in the middle of the bearing (9). The bottom surface of the pressure plate (8) is fixedly mounted with multiple clamping blocks (11) corresponding to the V-shaped limiting grooves (6).

2. The automotive wiring harness vibration resistance testing device as described in claim 1, characterized in that: Two guide rods (12) are movably inserted through the top surface of the U-shaped plate (7), and the bottom ends of the two guide rods (12) are fixed to the top surface of the pressure plate (8).

3. The automotive wiring harness vibration resistance testing device as described in claim 1, characterized in that: A spring (13) is fixedly installed on the inner bottom surface of the rectangular base plate (1), and one end of the spring (13) is fixed to the bottom surface of the vibration seat (3).

4. The automotive wiring harness vibration resistance testing device as described in claim 1, characterized in that: The mounting housing (2) has multiple heat dissipation holes (14) arranged in an equally spaced array on one side.

5. The automotive wiring harness vibration resistance testing device as described in claim 1, characterized in that: A rubber pad (15) is fixedly installed on the bottom surface of the rectangular base plate (1).

6. The automotive wiring harness vibration resistance testing device as described in claim 1, characterized in that: The top surface of the rectangular base plate (1) has multiple fixing holes (16) near the corners.

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