High-frequency fatigue test device for wiper

Abstract

The utility model discloses a high frequency fatigue test device of wiper, including bearing assembly, bearing assembly includes the base, and the upper end edge of base is fixedly connected with the rotary frame, and the rear end of rotary frame rotatoryly installs the rotary disc, and the front and rear two ends of rotary disc are penetrated and are set up the sliding slot no.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing technology, specifically to a high-frequency fatigue testing device for windshield wipers. Background Technology

[0002] In the field of automotive parts testing, the high-frequency fatigue testing device for windshield wipers is a core piece of equipment for verifying the long-term high-frequency reliability of windshield wiper assemblies and key components (such as support rotating rods and wiper arms). Its test data directly determines the service life design and quality judgment of windshield wiper products, which is of great significance for ensuring the clarity of vision when driving in the rain and improving driving safety.

[0003] Most existing wiper fatigue testing devices can only perform overall fatigue tests on the wiper assembly, making it difficult to conduct individual tests on different functional components such as the wiper support rotation rod and the wiper arm. When component fatigue failure occurs during the test, it is necessary to accurately locate the failed component and analyze the fatigue tolerance limit of each individual component, resulting in a lack of specificity in the test results and affecting the efficiency of improving the overall quality of wipers. Secondly, the flexibility of swing amplitude adjustment is poor. Most devices have fixed positions of transmission components, making it difficult to adjust according to the actual swing stroke of wipers on different vehicle models. This leads to a disconnect between the test scenario and the actual working scenario of the wiper, limiting the reference value of the test data. Furthermore, the load simulation function is limited, only simulating the wiper's no-load or fixed-load state, making it difficult to reproduce the working conditions of the wiper under different wiping resistances and to comprehensively evaluate the fatigue tolerance performance of the wiper in complex environments. Utility Model Content

[0004] The purpose of this invention is to provide a high-frequency fatigue testing device for windshield wipers, which has the advantages of being able to test each functional component of the windshield wiper and the motor under high load, having flexible and adjustable swing amplitude, and simulating various loads. It solves the problems of poor individual component testing capability, poor swing amplitude adjustment, and single load simulation in the existing windshield wiper fatigue testing devices.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-frequency fatigue testing device for windshield wipers includes a load-bearing component, which includes a base. A rotating frame is fixedly connected to the upper edge of the base, and a rotating disk is rotatably mounted at the rear end of the rotating frame. A sliding groove is formed through both ends of the rotating disk, and a slider is slidably mounted in the sliding groove. The load-bearing component also includes a connecting rod rotatably mounted at the rear end of the slider and a swing arm rotatably mounted at the left end of the base. One end of the connecting rod is rotatably mounted at the right edge of the swing arm. An installation component is installed at the upper end of the base, which includes an electric cylinder fixedly connected to the upper end of the base. A motor frame is fixedly connected to the output end of the electric cylinder, and the motor frame corresponds to the rotating shaft of the rotating disk. An auxiliary component is also installed at the left end of the base, which includes a clamp fixedly connected to the left edge of the base, and the clamp is flush with the rotating shaft of the swing arm. The auxiliary component also includes a clamp fixedly connected to the rear end of the swing arm. A sliding groove is formed at the upper edge of the base, and a simulation component is installed in the sliding groove. The simulation component includes a slider slidably mounted in the sliding groove and a piece of glass fixedly connected to the upper end of the slider.

[0006] Preferably, the outer wall of the base is equipped with a protective component, which includes a protective cover fixed to the outer wall of the base and a protective door hinged to the front opening of the protective cover.

[0007] It is worth noting that the protective cover on the outer wall of the base can enclose the core components such as the load-bearing components and mounting components inside the device, preventing components from splashing or debris from falling during the high-frequency fatigue test of the wipers and causing safety hazards. At the same time, it can prevent external dust and debris from entering and affecting the test accuracy. The protective door can be opened and closed flexibly, which is convenient for operators to install wipers and adjust test parameters, and can also be closed during the test to form a closed protective space to ensure the safety and stability of the test.

[0008] Preferably, a fixing plate is fixed to the front end of the slider, and a screw hole is opened through the front end of the fixing plate. A stud is installed in the screw hole, and the end of the stud abuts against the outer wall of the rotating disk.

[0009] It is worth noting that after the slider is positioned, tighten the stud through the screw hole on the fixing plate so that the end of the stud is pressed against the outer wall of the rotating disk, thus firmly fixing the slider and ensuring stable swing amplitude during the test.

[0010] Preferably, the front end of the rotating frame is provided with a slide groove four, and the mounting assembly also includes a slider two fixed to the rear end of the motor frame. The slider two is slidably installed in the slide groove four, and the extension direction of the slide groove four is the same as the retraction direction of the output end of the electric cylinder.

[0011] It is worth noting that when the electric cylinder drives the motor frame to move up and down, the slider two at the rear end of the motor frame will slide synchronously along the slide groove four at the front end of the rotating frame. The extension direction of the slide groove four is consistent with the contraction direction of the output end of the electric cylinder, which can provide precise guidance for the movement of the motor frame and ensure the stability of power transmission.

[0012] Preferably, the upper end of the slider three is provided with a threaded hole three, and a stud three is threadedly installed on the inner wall of the threaded hole three, with the end of the stud three abutting against the inner wall of the slide groove three.

[0013] It is worth noting that after the glass position is properly adjusted, tighten the stud through the screw hole three so that the end of the stud three is pressed against the inner wall of the slide groove three, which will fix the slider three and the glass and prevent the glass from shifting during the test and affecting the wiper fatigue test results.

[0014] Preferably, a servo motor is mounted on the upper end of the motor frame, and the output end of the servo motor is fixedly connected to the rotating shaft of the rotating disk.

[0015] It is worth noting that the servo motor can precisely control the rotation speed and start / stop frequency of the rotating disk, and then drive the wiper to achieve high-frequency reciprocating oscillation through the connecting rod and swing arm. This accurately simulates the high-frequency working state of the wiper during long-term use, providing a stable and controllable power source for the high-frequency fatigue test of the wiper and ensuring the reliability of the test data.

[0016] Preferably, a test motor is installed at the upper end of the motor frame, and the output end of the test motor is fixedly connected to the rotating shaft of the rotating disk. The outer wall of the swing arm is provided with a second sliding groove. The auxiliary component also includes a sliding sleeve that is slidably installed in the second sliding groove. The outer wall of the sliding sleeve is provided with a second threaded hole, and a second stud is installed in the second threaded hole. One end of the second stud abuts against the outer wall of the swing arm, and the other end of the second stud is fixedly connected to a weight.

[0017] It is worth noting that the test motor provides rotational power to the rotating disk to drive the wiper to swing. The sliding sleeve can slide along the second groove of the swing arm to adjust the position of the weight on the swing arm, thereby changing the load weight of the swing arm and simulating different wiping resistances in actual operation of the wiper. High-load fatigue tests can be performed on the test motor separately. The position of the sliding sleeve can be fixed by tightening the second stud through the second screw hole to ensure load stability during the test. This allows for a more comprehensive test of the high-frequency fatigue performance of the wiper under different loads, improving the comprehensiveness of the test.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides a stable support foundation for the entire device through the base, while the rotating frame at the upper end provides rotational support for the rotating disk. The rotating disk slides with a slider through a groove, allowing adjustment of the slider's position to change the transmission stroke of the connecting rod, thereby driving the swing arm to swing at different amplitudes. The electric cylinder in the mounting assembly drives the motor frame to move, facilitating precise docking of the motor on the motor frame with the rotating disk's shaft, providing stable power to the rotating disk. The clamp of the auxiliary assembly is flush with the swing arm's shaft, and together with the clamp at the rear of the swing arm, it can firmly fix the wiper, ensuring that the wiper can swing at a reasonable fulcrum after installation, conforming to actual usage conditions. The slider of the simulation assembly can slide along the groove, moving the glass to the wiper's wiping range, simulating the windshield scenario when the wiper is working. Through the coordinated cooperation of the components, the high-frequency oscillation test foundation of the wiper is constructed, accurately simulating the actual working state of the wiper and providing reliable structural support for high-frequency fatigue testing. Attached Figure Description

[0019] Figure 1 This is an isometric view of the overall structure of this utility model; Figure 2 This is a three-dimensional structural breakdown diagram of the present invention; Figure 3 This is a three-dimensional structural breakdown diagram of the load-bearing component of this utility model; Figure 4 This is a three-dimensional structural disassembly diagram of the installation components of this utility model; Figure 5 This is a three-dimensional structural disassembly diagram of the auxiliary component of this utility model; Figure 6 This is a three-dimensional structural disassembly diagram of the simulation component of this utility model.

[0020] Reference numerals in the attached drawings: 101, base; 102, rotating frame; 103, rotating disk; 104, slide groove one; 105, slider one; 106, fixing plate; 107, screw hole one; 108, stud one; 109, connecting rod; 110, swing rod; 111, slide groove two; 112, slide groove three; 113, slide groove four; 201, protective cover; 202, protective door; 301, electric cylinder; 302, slider two; 303, motor frame; 401, sliding sleeve; 402, screw hole two; 403, stud two; 404, weight; 405, clamp one; 406, clamp two; 501, slider three; 502, screw hole three; 503, stud three; 504, glass. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To address the shortcomings of existing wiper fatigue testing devices, such as poor individual component testing capabilities, inadequate oscillation amplitude adjustment, and limited load simulation, the following technical solution is proposed. Please refer to [link / reference]. Figures 1-6 ; A high-frequency fatigue testing device for windshield wipers includes a load-bearing assembly. The load-bearing assembly includes a base 101, a rotating frame 102 fixedly connected to the upper edge of the base 101, a rotating disk 103 rotatably mounted at the rear end of the rotating frame 102, and sliding grooves 104 extending through both ends of the rotating disk 103. A slider 105 is slidably mounted within the sliding grooves 104. The load-bearing assembly also includes a connecting rod 109 rotatably mounted at the rear end of the slider 105, and a swing arm 110 rotatably mounted at the left end of the base 101. One end of the connecting rod 109 is rotatably mounted at the right edge of the swing arm 110. A mounting assembly is mounted on the upper end of the base 101, including components fixedly connected to the upper end of the base 101. The electric cylinder 301 has a motor frame 303 fixedly connected to its output end. The motor frame 303 corresponds to the rotating shaft of the rotating disk 103. An auxiliary component is also installed on the left end of the base 101. The auxiliary component includes a clamp 405 fixedly connected to the left edge of the base 101. The clamp 405 is flush with the rotating shaft of the swing arm 110. The auxiliary component also includes a clamp 406 fixedly connected to the rear end of the swing arm 110. A sliding groove 112 is provided on the upper edge of the base 101. A simulation component is installed in the sliding groove 112. The simulation component includes a slider 501 slidably installed in the sliding groove 112 and a glass 504 fixedly connected to the upper end of the slider 501.

[0023] The base 101 provides a stable bearing foundation for the entire device, and the rotating frame 102 at its upper end provides rotational support for the rotating disk 103. The rotating disk 103 slides with the slider 105 through the slide groove 104, and the position of the slider 105 can be adjusted to change the transmission stroke of the connecting rod 109, thereby driving the swing arm 110 to swing at different amplitudes. In the mounting assembly, the electric cylinder 301 can drive the motor frame 303 to move, which facilitates the precise docking of the motor on the motor frame 303 with the rotating shaft of the rotating disk 103, providing stable power to the rotating disk 103. The clamp of the auxiliary assembly... Fixture 405 is flush with the pivot of the swing arm 110. Together with the clamp 406 at the rear end of the swing arm 110, it can firmly fix the wiper, ensuring that the wiper can swing with a reasonable fulcrum after installation, which is consistent with the actual use condition. The slider 501 of the simulation component can slide along the slide groove 112, which can drive the glass 504 to be adjusted within the wiper wiping range, simulating the windshield 504 scenario when the wiper is working. Through the coordinated cooperation between the parts, the components build the test basis for the high-frequency swing of the wiper, which can accurately simulate the actual working state of the wiper and provide reliable structural support for high-frequency fatigue testing.

[0024] Please see Figure 2 The outer wall of the base 101 is equipped with a protective assembly, which includes a protective cover 201 fixed to the outer wall of the base 101 and a protective door 202 hinged to the front opening of the protective cover 201. The protective cover 201 on the outer wall of the base 101 can enclose the core components such as the load-bearing components and mounting components inside the device, preventing components from splashing or debris from falling during the high-frequency fatigue test of the wipers and causing safety hazards. At the same time, it can prevent external dust and debris from entering and affecting the test accuracy. The protective door 202 can be opened and closed flexibly, which is convenient for operators to install wipers and adjust test parameters. It can also be closed during the test to form a closed protective space to ensure the safety and stability of the test.

[0025] Please see Figure 3 A fixing plate 106 is fixed to the front end of slider 105. A screw hole 107 is opened through the front end of the fixing plate 106. A stud 108 is installed in the screw hole 107. The end of the stud 108 abuts against the outer wall of the rotating disk 103. After slider 105 is adjusted to the correct position, the stud 108 is tightened through the screw hole 107 on the fixing plate 106, so that the end of the stud 108 abuts against the outer wall of the rotating disk 103, thus firmly fixing slider 105 and ensuring stable swing amplitude during the test.

[0026] Please see Figure 4The rotating frame 102 has a sliding groove 113 at its front end. The mounting assembly also includes a slider 302 fixed to the rear end of the motor frame 303. The slider 302 is slidably installed in the sliding groove 113. The extension direction of the sliding groove 113 is the same as the retraction direction of the output end of the electric cylinder 301. When the electric cylinder 301 drives the motor frame 303 to move up and down, the slider 302 at the rear end of the motor frame 303 will slide synchronously along the sliding groove 113 at the front end of the rotating frame 102. The extension direction of the sliding groove 113 is consistent with the retraction direction of the output end of the electric cylinder 301, which can provide precise guidance for the movement of the motor frame 303 and ensure the stability of power transmission.

[0027] Please see Figure 6 The upper end of slider 3 501 is provided with a threaded hole 3 502. A stud 3 503 is threaded onto the inner wall of the threaded hole 3 502. The end of the stud 3 503 abuts against the inner wall of the slide groove 3 112. After the glass 504 is properly positioned, the stud 3 503 is tightened through the threaded hole 3 502 so that the end of the stud 3 503 abuts against the inner wall of the slide groove 3 112, thereby fixing slider 3 501 and glass 504 and preventing the glass 504 from shifting during the test and affecting the wiper fatigue test results.

[0028] Example 1: Please refer to Figures 2-4 A servo motor is installed on the upper end of the motor frame 303, and the output end of the servo motor is fixedly connected to the rotating shaft of the rotating disk 103. The servo motor can precisely control the rotation speed and start-stop frequency of the rotating disk 103, and then drive the wiper to achieve high-frequency reciprocating oscillation through the connecting rod 109 and the swing rod 110. This accurately simulates the high-frequency working state of the wiper during long-term use, providing a stable and controllable power source for the high-frequency fatigue test of the wiper and ensuring the reliability of the test data.

[0029] Example 2: Please refer to Figures 2-5 A test motor is mounted on the upper end of the motor frame 303. The output end of the test motor is fixedly connected to the shaft of the rotating disk 103. The outer wall of the swing arm 110 has a second sliding groove 111. The auxiliary components also include a sliding sleeve 401 that is slidably installed in the second sliding groove 111. The outer wall of the sliding sleeve 401 has a threaded hole 402. A stud 403 is installed in the threaded hole 402. One end of the stud 403 abuts against the outer wall of the swing arm 110, and the other end of the stud 403 is fixedly connected to a weight 404. The test motor is the rotating disk 103. The sliding sleeve 401 provides rotational power to drive the wiper to swing. It can slide along the second groove 111 of the swing arm 110 to adjust the position of the weight 404 on the swing arm 110, thereby changing the load weight of the swing arm 110 and simulating different wiping resistances in actual wiper operation. High-load fatigue tests can be performed on the test motor separately. The position of the sliding sleeve 401 can be fixed by tightening the second stud 403 through the second screw hole 402 to ensure load stability during the test. It can more comprehensively test the high-frequency fatigue performance of the wiper under different loads and improve the comprehensiveness of the test.

[0030] Working principle: Pre-test preparation stage: wiper fixing and test object selection.

[0031] If testing the wiper support rotating rod: use clamp 1 405 (flush with the pivot of swing arm 110) and clamp 2 406 to firmly fix the wiper support rotating rod, ensuring that the wiper follows the swing trajectory with a reasonable fulcrum.

[0032] If testing the wiper arm: Fix the wiper arm in conjunction with the glass 504 using clamp 2 406, push the slider 3 501 to slide along the groove 3 112 of the base 101, moving the glass 504 into the wiper wiping range. After adjusting it into place, tighten the stud 3 503 in the screw hole 3 502 on the slider 3 501, so that the end of the stud 3 503 abuts against the inner wall of the groove 3 112, fixing the position of the glass 504 and preventing displacement during the test. This ensures that the wiper blade adheres to the surface of the glass 504, conforming to the actual wiping scenario.

[0033] Swing amplitude adjustment: Slide slider 105 along the groove 104 of the rotating disk 103 to adjust to the required swing amplitude, then tighten stud 108 in the screw hole 107 on the fixing plate 106 so that the end of stud 108 abuts against the outer wall of the rotating disk 103, fixing the position of slider 105 and ensuring the stability of the swing amplitude during the test.

[0034] Motor docking adjustment: Start the electric cylinder 301 of the mounting component to drive the motor frame 303 to move. At this time, the slider 2 302 at the rear end of the motor frame 303 slides along the slide groove 4 113 at the front end of the rotating frame 102 (the extension direction is consistent with the retraction direction of the output end of the electric cylinder 301), providing precise guidance for the motor frame 303 until the motor output end on the motor frame 303 is precisely docked with the rotating shaft of the rotating disk 103.

[0035] Preparation of protective devices: Close the protective door 202 at the front end of the protective cover 201 to form a closed protective space to prevent parts from splashing and debris from falling during the test, and to prevent external dust and debris from entering and affecting the test accuracy; if parameters need to be adjusted or inspections are required, the protective door 202 can be opened for operation.

[0036] Trial operation phase Servo Motor Drive: Fatigue Test of High-Frequency Oscillation of Wiper Blades When a servo motor is installed on the motor frame 303, the output end of the servo motor is fixedly connected to the rotating shaft of the rotating disk 103. The servo motor precisely controls the rotation speed and start / stop frequency of the rotating disk 103. When the rotating disk 103 rotates, the connecting rod 109 is driven to reciprocate through the cooperation of the sliding groove 104 and the slider 105. The connecting rod 109 pushes the swing rod 110 (around the rotating shaft at the left end of the base 101) to swing at different amplitudes (the amplitude is determined by the position of the slider 105). The swing rod 110 further drives the wiper (supporting rotating rod or brush rod) fixed on the clamp 406 to perform high-frequency reciprocating wiping action. During the test, the 504 glass simulated the actual 504 windshield scenario, and the servo motor continuously provided stable and controllable power to accurately simulate the high-frequency working state of the wiper during long-term use, thus completing the high-frequency oscillation fatigue test of the wiper.

[0037] Test motor drive: Test motor high load fatigue test When the test motor is installed on the motor frame 303, the output end of the test motor is fixedly connected to the rotating shaft of the rotating disk 103. First, slide the sliding sleeve 401 along the sliding groove 111 of the swing arm 110 to adjust the position of the weight 404 on the swing arm 110 (changing the load weight to simulate different wiping resistances of the wiper). After adjustment, tighten the stud 403 in the screw hole 402 on the sliding sleeve 401 so that one end of the stud 403 abuts against the outer wall of the swing arm 110, fixing the position of the sliding sleeve 401 and the weight 404. Start the test motor, which drives the rotating disk 103 to rotate and drives the swing arm 110 to swing through the connecting rod 109. At this time, the swing arm 110 carries the weight 404 (load) to move, simulating the resistance load in the actual operation of the wiper. During the process of driving the swing arm 110 to swing under load, the test motor continuously bears the load pressure, realizing the high load fatigue test of the test motor itself. By monitoring the motor operating parameters, its load tolerance performance is judged.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-frequency fatigue testing device for windshield wipers, comprising a load-bearing component, characterized in that, The supporting assembly includes a base (101), a rotating frame (102) fixedly connected to the upper edge of the base (101), a rotating disk (103) rotatably mounted at the rear end of the rotating frame (102), a sliding groove (104) extending through the front and rear ends of the rotating disk (103), a slider (105) slidably mounted in the sliding groove (104), the supporting assembly also includes a connecting rod (109) rotatably mounted at the rear end of the slider (105), and a swing rod (110) rotatably mounted at the left end of the base (101), one end of the connecting rod (109) rotatably mounted at the right edge of the swing rod (110), and an installation assembly mounted on the upper end of the base (101), the installation assembly including an electric cylinder (301) fixedly connected to the upper end of the base (101), the electric cylinder (301) being mounted on the upper end of the base (101). The output end of the moving cylinder (301) is fixedly connected to a motor frame (303), which corresponds to the rotating shaft of the rotating disk (103). An auxiliary component is also installed on the left end of the base (101). The auxiliary component includes a clamp (405) fixedly connected to the left edge of the base (101). The clamp (405) is flush with the rotating shaft of the rocker arm (110). The auxiliary component also includes a clamp (406) fixedly connected to the rear end of the rocker arm (110). A slide groove (112) is provided at the upper edge of the base (101). A simulation component is installed in the slide groove (112). The simulation component includes a slider (501) slidably installed in the slide groove (112) and a glass (504) fixedly connected to the upper end of the slider (501).

2. The wiper high-frequency fatigue testing device according to claim 1, characterized in that, The outer wall of the base (101) is equipped with a protective assembly, which includes a protective cover (201) fixed to the outer wall of the base (101) and a protective door (202) hinged to the front opening of the protective cover (201).

3. The wiper high-frequency fatigue testing device according to claim 1, characterized in that, A fixing plate (106) is fixed to the front end of slider 1 (105). A screw hole 1 (107) is opened through the front end of the fixing plate (106). A stud 1 (108) is installed in the screw hole 1 (107) with internal thread. The end of the stud 1 (108) abuts against the outer wall of the rotating disk (103).

4. The wiper high-frequency fatigue testing device according to claim 1, characterized in that, The front end of the rotating frame (102) is provided with a slide groove four (113). The mounting assembly also includes a slider two (302) fixed to the rear end of the motor frame (303). The slider two (302) is slidably installed in the slide groove four (113). The extension direction of the slide groove four (113) is the same as the retraction direction of the output end of the electric cylinder (301).

5. The wiper high-frequency fatigue testing device according to claim 1, characterized in that, The upper end of slider three (501) is provided with threaded hole three (502), and threaded stud three (503) is installed on the inner wall of threaded hole three (502). The end of stud three (503) abuts against the inner wall of slide groove three (112).

6. The wiper high-frequency fatigue testing device according to claim 1, characterized in that, A servo motor is mounted on the upper end of the motor frame (303), and the output end of the servo motor is fixedly connected to the rotating shaft of the rotating disk (103).

7. The wiper high-frequency fatigue testing device according to claim 1, characterized in that, A test motor is installed on the upper end of the motor frame (303). The output end of the test motor is fixedly connected to the rotating shaft of the rotating disk (103). The outer wall of the swing arm (110) is provided with a second sliding groove (111). The auxiliary component also includes a sliding sleeve (401) that is slidably installed in the second sliding groove (111). The outer wall of the sliding sleeve (401) is provided with a second threaded hole (402). A second stud (403) is installed in the threaded hole (402). One end of the second stud (403) abuts against the outer wall of the swing arm (110), and the other end of the second stud (403) is fixedly connected to a weight (404).

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