Automobile windscreen wiper rubber strip performance testing system and testing device

Abstract

The invention provides an automobile windscreen wiper rubber strip performance test system and a test device, the system comprises a main control unit, a friction force test unit and a data acquisition and analysis unit, the friction force test unit is electrically connected with the main control unit, and the data acquisition and analysis unit is electrically connected with the main control unit. The friction force loading unit is electrically connected with the main control unit; the temperature control unit is electrically connected with the main control unit; the adhesive tape clamping unit is electrically connected with the main control unit; the clamping unit comprises a clamping mechanism, and the clamping mechanism is located above the friction force loading unit; the angle adjusting mechanism is connected with the clamping mechanism; and the position adjusting mechanism is used for adjusting the positions of the angle adjusting mechanism and the clamping mechanism and is in sliding fit with the angle adjusting mechanism. According to the invention, an automatic test mode is adopted, the test efficiency is improved, and the comprehensive performance test of the windscreen wiper rubber strip is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive component testing devices, and particularly to a performance testing system and testing device for automotive wiper rubber strips. Background Art

[0002] The wiper rubber strip plays a crucial role in automotive driving safety. Its main function is to remove rainwater, snow, dust and other debris on the windshield to ensure clear vision for the driver. The wiper rubber strip achieves these functions through its special material and design. It is made of rubber, has a certain hardness and elasticity, and can closely fit the curvature of the windshield. However, as a manufacturer of wiper rubber strips, in order to more comprehensively evaluate the performance of the wiper rubber strip, there is an urgent need to design a testing device that can measure the friction force changes at different temperatures and pressures, so as to test the comprehensive performance of the wiper rubber strip. Summary of the Invention

[0003] In view of the above problems, the present invention provides a performance testing system and testing device for automotive wiper rubber strips.

[0004] The technical solution for solving the above technical problems is as follows: A performance testing system and testing device for automotive wiper rubber strips, the system includes a main control unit, a friction force testing unit, and a data acquisition and analysis unit. The friction force testing unit is electrically connected to the main control unit, and the data acquisition and analysis unit is electrically connected to the main control unit. The testing device includes: A friction force loading unit for simulating the friction between the glass and the rubber strip, the friction force loading unit is electrically connected to the main control unit; A temperature control unit, the temperature control unit is electrically connected to the main control unit; A clamping unit for clamping the rubber strip and making the rubber strip rub against the friction force loading unit on the friction force loading unit, the rubber strip clamping unit is electrically connected to the main control unit; The clamping unit includes: A clamping mechanism for clamping the rubber strip, the clamping mechanism is located above the friction force loading unit; An angle adjustment mechanism for adjusting the position of the contact surface between the rubber strip and the loading unit, the angle adjustment mechanism is connected to the clamping mechanism; A position adjustment mechanism for adjusting the positions of the angle adjustment mechanism and the clamping mechanism, the position adjustment mechanism is slidably matched with the angle adjustment mechanism.

[0005] Furthermore, it further includes: A box body, the temperature control unit and the rubber strip clamping unit are located inside the box body, and at least a part of the friction force loading unit is located inside the box body.

[0006] Furthermore, the clamping mechanism includes: A driving cylinder, a slider, an intermediate connecting plate, and a rubber strip clamping block. The driving cylinder is connected to an angle adjustment mechanism. A guide rail is provided on the cylinder wall surface of the driving cylinder. The intermediate connecting plate is slidably engaged with the guide rail, and the intermediate connecting plate is also connected to the output end of the driving cylinder. The rubber strip clamping block is connected to the intermediate connecting plate.

[0007] Furthermore, the angle adjustment mechanism includes: An angle disk and an angle adjustment block. The angle disk is connected to a position adjustment mechanism. The angle disk is connected to the angle adjustment block. The angle adjustment block is connected to the driving cylinder.

[0008] Furthermore, the position adjustment mechanism includes: A bracket, a bottom plate, a lead screw assembly, and a sliding bottom plate. The bracket is connected to the box body. The bottom plate is connected to the bracket. A slide rail is provided on the bottom plate. The lead screw assembly is installed on the bottom plate. The lead screw assembly is also engaged with the sliding bottom plate. The sliding bottom plate is connected to the angle disk.

[0009] Furthermore, the friction force loading unit includes a servo motor, a reduction gearbox, and a glass disk. The reduction gearbox is installed at the bottom of the box body. The reduction gearbox is also connected to the output end of the servo motor. The glass disk is located inside the box body and is located below the clamping mechanism. The glass disk is also connected to the output end of the reduction gearbox.

[0010] Furthermore, the temperature control unit includes: A heater and a mounting bracket. The heater is electrically connected to the main control unit. One end of the mounting bracket is connected to the box body. The other end of the mounting bracket is connected to the heater. The heater is located above the glass disk.

[0011] The beneficial effects of the present invention are as follows: The present invention simulates the friction force between the windshield wiper rubber strip and the automotive glass through the friction force test unit, the friction force loading unit, and the clamping unit, and controls the data acquisition and analysis unit by the main control unit to collect and analyze the friction force. At the same time, different environmental temperatures are set through the temperature control unit to simulate the working conditions of the windshield wiper rubber strip under different climate conditions, thereby realizing a comprehensive, efficient, and accurate test of the performance of the windshield wiper rubber strip. The present invention adopts an automated test method, improves the test efficiency, and is more accurate in the comprehensive performance test of the windshield wiper rubber strip. Description of the Drawings

[0012] Figure 1 It is the front view of the automotive windshield wiper rubber strip performance test device of the present invention; Figure 2 It is the three-dimensional view of the automotive windshield wiper rubber strip performance test device of the present invention; Figure 3 It is the three-dimensional view of the clamping mechanism and the angle adjustment mechanism of the automotive windshield wiper rubber strip performance test device of the present invention; Figure 4A perspective view of the performance testing device for the automotive wiper rubber strip of the present invention; Figure 5 A control schematic diagram of the performance testing system and testing device for the automotive wiper rubber strip of the present invention.

[0013] Reference numerals in the drawings: box body 1, driving cylinder 10, guide rail 10-1, slider 11, intermediate connecting plate 12, buffer member 12-1, rubber strip clamping block 13, angle dial 20, angle adjusting block 21, adjusting hole 21-1, locking member 22, angle indicating block 23, bracket 30, bottom plate 31, slide rail 31-1, lead screw assembly, sliding bottom plate 32, servo motor 40, reduction gearbox 41, glass disc 42, heater 50, mounting bracket 51, lead screw 60, lead screw bearing seat 61, lead screw handle 62. Detailed implementation manners

[0014] The present invention will be further described below in conjunction with the drawings and specific implementation manners.

[0015] As Figure 5 shown, an automotive wiper rubber strip performance testing system and testing device, the system includes a main control unit, a friction force testing unit, and a data acquisition and analysis unit. The friction force testing unit is electrically connected to the main control unit, and the data acquisition and analysis unit is electrically connected to the main control unit. The testing device includes: A friction force loading unit for simulating the friction between the glass and the rubber strip, and the friction force loading unit is electrically connected to the main control unit; A temperature control unit, and the temperature control unit is electrically connected to the main control unit; A clamping unit for clamping the rubber strip to make the rubber strip rub against the friction force loading unit on the friction force loading unit, and the rubber strip clamping unit is electrically connected to the main control unit; The clamping unit includes: A clamping mechanism for clamping the rubber strip, and the clamping mechanism is located above the friction force loading unit; An angle adjusting mechanism for adjusting the position of the contact surface between the rubber strip and the loading unit, and the angle adjusting mechanism is connected to the clamping mechanism; A position adjusting mechanism for adjusting the positions of the angle adjusting mechanism and the clamping mechanism, and the position adjusting mechanism is in sliding fit with the angle adjusting mechanism.

[0016] In this embodiment, the clamping unit is used to fix, clamp and adjust the wiper rubber strip to be tested to ensure stability during the test; the frictional force loading unit is used to simulate the force condition of the wiper during actual use and load the wiper rubber strip; the frictional force testing unit is used to measure the pressure applied to the wiper rubber strip; the temperature control unit is used to control the temperature of the test environment and simulate the working conditions of the wiper rubber strip under different climate conditions; the data acquisition and analysis unit is used to collect the pressure, frictional force and temperature data during the test in real time, and generate a curve image through software analysis to show the change trend of the frictional force with temperature and pressure; the main control unit is used to control the frictional force loading unit, the data acquisition and analysis unit, the frictional force testing unit, the temperature control unit and the clamping unit.

[0017] As Figures 1 to 4 shown, it further includes: A box body 1, the temperature control unit and the rubber strip clamping unit are located inside the box body 1, and at least a part of the frictional force loading unit is located inside the box body 1.

[0018] The clamping mechanism includes: A driving cylinder 10, a slider 11, an intermediate connecting plate 12, and a rubber strip clamping block 13. The driving cylinder 10 is connected to the angle adjustment mechanism. A guide rail 10-1 is provided on the cylinder wall surface of the driving cylinder 10. The intermediate connecting plate 12 is slidably matched with the guide rail 10-1, and the intermediate connecting plate 12 is also connected to the output end of the driving cylinder 10. The rubber strip clamping block 13 is connected to the intermediate connecting plate 12.

[0019] In this embodiment, the clamping mechanism further includes a buffer member 12-1. One end of the buffer member 12-1 is connected to the rubber strip clamping block 13, and the other end of the buffer member 12-1 is connected to the intermediate connecting plate 12. When the piston rod of the driving cylinder 10 extends, the slider 11 moves downward along the guide rail 10-1. When the rubber strip clamping block 13 clamps the rubber strip and contacts the frictional force loading unit, the buffer member 12-1 can play a buffering role to prevent the rubber strip to be tested from being damaged due to excessive impact force.

[0020] The angle adjustment mechanism includes: An angle disc 20 and an angle adjustment block 21. The angle disc 20 is connected to the position adjustment mechanism. The angle disc 20 is connected to the angle adjustment block 21, and the angle adjustment block 21 is connected to the driving cylinder 10.

[0021] Specifically, the angle adjustment block 21 is provided with an adjustment hole 21-1, which is an arc-shaped hole. The angle dial 20 is provided with scale lines. The angle indicator block 23 is locked on the angle adjustment block 21. When it is necessary to adjust the angle of the wiper rubber strip, loosen the locking component 22, and adjust the value where the angle indicator block 23 coincides with the scale lines on the angle dial 20, then the angle of the angle adjustment block 21 can be adjusted, so as to meet the test of different contact angles between the wiper rubber strip and the friction force loading unit.

[0022] The position adjustment mechanism includes: A bracket 30, a bottom plate 31, a lead screw assembly, and a sliding bottom plate 32. The bracket 30 is connected to the box body 1, the bottom plate 31 is connected to the bracket 30. The bottom plate 31 is provided with a slide rail 31-1. The lead screw assembly is installed on the bottom plate 31. The lead screw assembly is also matched with the sliding bottom plate 32. The sliding bottom plate 32 is connected to the angle dial 20.

[0023] Specifically, the lead screw assembly includes a lead screw 60, a lead screw handle 62, and at least two lead screw bearing seats 61. The two lead screw bearing seats 61 are respectively installed at both ends of the bottom plate 31. The two ends of the lead screw 60 are matched with the two lead screw bearing seats 61. At the same time, the lead screw 60 is also matched with the sliding bottom plate 32. The lead screw handle 62 is fixedly connected to the lead screw 60. When it is necessary to adjust the position of the clamping mechanism, hold the lead screw handle 62 and rotate the lead screw 60, and the sliding bottom plate 32 will move along the slide rail 31-1, so as to adjust the position of the clamping mechanism.

[0024] The friction force loading unit includes a servo motor 40, a speed reducer 41, and a glass disc 42. The speed reducer 41 is installed at the bottom of the box body 1. The speed reducer 41 is also connected to the output end of the servo motor 40. The glass disc 42 is located inside the box body 1, and the glass disc 42 is located below the clamping mechanism. The glass disc 42 is also connected to the output end of the speed reducer 41.

[0025] The temperature control unit includes: A heater 50 and a mounting bracket 51. The heater 50 is electrically connected to the main control unit. One end of the mounting bracket 51 is connected to the box body 1, and the other end of the mounting bracket 51 is connected to the heater 50. The heater 50 is located above the glass disc 42.

[0026] The working principle of the present invention is as follows: First, the strip to be tested is clamped on the strip clamping block 13. Then, the main control unit controls the servo motor 40 of the friction force loading unit to start. The servo motor 40 drives the reduction gearbox 41 to rotate, and the reduction gearbox 41 drives the glass disk 42 to rotate. When the speed of the glass disk 42 reaches the rotational speed set by the main control unit, the servo motor 40 drives the glass disk 42 to maintain the current speed. Then, the main control unit controls the data acquisition and analysis unit to collect the self-friction force of the glass disk 42 (the acquisition time is 2 minutes, and the acquisition frequency is once per second), and calculates the average value of its friction force. Then, the main control unit controls the driving cylinder 10 to start. The piston rod of the driving cylinder 10 extends, thereby pushing the slider 11 to move downward along the guide rail 10-1. At this time, the strip clamping block 13 and the strip to be tested also move downward accordingly. When the strip contacts the glass disk 42, the driving cylinder 10 maintains the current position. The main control unit controls the data acquisition and analysis unit to collect the self-friction force of the glass disk 42 again (the acquisition time can be set by itself, the acquisition frequency is once per second, and the longer the time, the more stable the data). Since friction force will be generated between the strip and the disk 42 after the strip descends, the friction force collected this time is the sum of the no-load friction force and the friction force of the strip on the glass. After the acquisition is completed, the average value is calculated by the data acquisition and analysis unit, and then the average value is subtracted from the friction force of the first no-load to obtain the friction force between the windshield wiper and the glass in the current environment.

[0027] Finally, it should be noted that the above-described embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting it, let alone limiting the protection scope of the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent substitution on some or all of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the protection scope of the claims.

Claims

1. A car wiper rubber strip performance test system and test device, the system comprises a main control unit, a friction test unit, and a data acquisition and analysis unit, the friction test unit is electrically connected to the main control unit, the data acquisition and analysis unit is electrically connected to the main control unit, and the characteristics are: The test setup includes: A friction force loading unit for simulating the friction between the glass and the rubber strip, the friction force loading unit being electrically connected to the main control unit; A temperature control unit, the temperature control unit is electrically connected to the main control unit; A clamping unit for clamping the rubber strip so that the rubber strip rubs against the friction force loading unit, and the rubber strip clamping unit is electrically connected to the main control unit; The clamping unit comprises: A clamping mechanism for clamping the rubber strip, the clamping mechanism being located above the friction force loading unit; An angle adjustment mechanism for adjusting the contact surface position between the rubber strip and the loading unit, the angle adjustment mechanism being connected to the clamping mechanism; A position adjustment mechanism is used to adjust the positions of the angle adjustment mechanism and the clamping mechanism, and the position adjustment mechanism is slidably matched with the angle adjustment mechanism.

2. A vehicle wiper rubber strip performance testing system and testing device according to claim 1, characterized in that: Also includes: A box body (1), the temperature control unit and the rubber strip clamping unit are located inside the box body (1), and at least a part of the friction force loading unit is located inside the box body (1).

3. A vehicle wiper rubber strip performance testing system and testing device according to claim 2, characterized in that: The clamping mechanism comprises: A driving cylinder (10), a sliding block (11), an intermediate connecting plate (12), and a rubber strip clamping block (13); the driving cylinder (10) is connected to an angle adjustment mechanism; a guide rail (10-1) is provided on a cylinder wall surface of the driving cylinder (10); the intermediate connecting plate (12) is slidably matched with the guide rail (10-1); the intermediate connecting plate (12) is also connected to an output end of the driving cylinder (10); and the rubber strip clamping block (13) is connected to the intermediate connecting plate (12).

4. A vehicle wiper strip performance testing system and testing device according to claim 3, characterized in that: The angle adjustment mechanism comprises: An angle disc (20) and an angle adjustment block (21), wherein the angle disc (20) is connected to the position adjustment mechanism, the angle disc (20) is connected to the angle adjustment block (21), and the angle adjustment block (21) is connected to the driving cylinder (10).

5. A vehicle wiper rubber strip performance testing system and testing device according to claim 4, characterized in that: The position adjustment mechanism comprises: A bracket (30), a bottom plate (31), a screw assembly, and a sliding bottom plate (32); the bracket (30) is connected to the box body (1); the bottom plate (31) is connected to the bracket (30); a slide rail (31-1) is provided on the bottom plate (31); the screw assembly is mounted on the bottom plate (31); the screw assembly also cooperates with the sliding bottom plate (32); and the sliding bottom plate (32) is connected to the angle plate (20).

6. A vehicle wiper rubber strip performance testing system and testing device according to claim 2, characterized in that: The friction force loading unit comprises a servo motor (40), a reduction box (41), and a glass disc (42); the reduction box (41) is mounted at the bottom of the housing (1); the reduction box (41) is also connected to the output end of the servo motor (40); the glass disc (42) is located inside the housing (1), and the glass disc (42) is located below the clamping mechanism; the glass disc (42) is also connected to the output end of the reduction box (41).

7. A vehicle wiper rubber strip performance testing system and testing device according to claim 6, characterized in that: The temperature control unit comprises: A heater (50) and a mounting bracket (51), wherein the heater (50) is electrically connected to the main control unit, one end of the mounting bracket (51) is connected to the box body (1), and the other end of the mounting bracket (51) is connected to the heater (50), and the heater (50) is located above the glass disc (42).

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