Pedal rubber sleeve wear resistance test device

Abstract

The present invention provides a test device for the wear resistance of pedal rubber sleeves. The test device for the wear resistance of pedal rubber sleeves includes a test bench, a pedal assembly, a friction assembly and a drive assembly. The pedal assembly is connected to the test bench to connect the pedal rubber sleeve to the test bench; the friction assembly includes a swing arm, an L-shaped plate, a spring and a sole model block, the swing arm is rotatably connected to the test bench, the L-shaped plate is height-adjustably connected to the swing arm, the sole model block is connected to the L-shaped plate through the spring to adjust the pressure of the sole model block on the pedal rubber sleeve by the height of the L-shaped plate; the drive assembly is connected to the swing arm to drive the sole model block to reciprocately rub the pedal rubber sleeve. The test device for the wear resistance of pedal rubber sleeves is connected to the swing arm in an adjustable height through the L-shaped plate, so as to achieve the adjustability of the friction loading force value of the pedal rubber sleeve, and has a simple structure and convenient debugging and installation.

Description

Technical Field

[0001] The invention relates to the technical field of automobile component durability testing, and in particular to a pedal rubber sleeve wear resistance testing device. Background Art

[0002] At present, in the field of automobile testing technology, there is no friction durability performance test device for automobile pedal rubber sleeves. The friction durability performance test of automobile pedal rubber sleeves is all tested by manual operation. Manual operation has high labor intensity, low test efficiency, and cannot be operated and tested under high and low temperature test environments. Summary of the invention

[0003] The purpose of the present invention is to provide a pedal rubber sleeve wear resistance testing device, which is connected to the rocker arm in an adjustable height via an L-shaped plate to achieve adjustability of the friction loading force value of the pedal rubber sleeve, has a simple structure, and is convenient for debugging and installation.

[0004] To achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0005] According to one aspect of the present invention, a pedal rubber sleeve wear resistance test device is provided. The pedal rubber sleeve wear resistance test device comprises a test bench, a pedal assembly, a friction assembly and a drive assembly. The pedal assembly is connected to the test bench to connect the pedal rubber sleeve to the test bench; the friction assembly comprises a rocker arm, an L-shaped plate, a spring and a sole model block, the rocker arm is rotatably connected to the test bench, the L-shaped plate is height-adjustably connected to the rocker arm, and the sole model block is connected to the L-shaped plate via the spring to adjust the pressure of the sole model block on the pedal rubber sleeve by the height of the L-shaped plate; the drive assembly is connected to the rocker arm to drive the sole model block to perform reciprocating friction on the pedal rubber sleeve.

[0006] According to one embodiment of the present invention, the driving assembly includes a cylinder and a U-shaped block, the rocker arm passes through the open end of the U-shaped block and is rotationally connected to the U-shaped block, the closed end of the U-shaped block is connected to the cylinder rod of the cylinder, and the cylinder body of the cylinder is connected to the test bench.

[0007] According to an embodiment of the present invention, the driving assembly further comprises a first position sensor and a second position sensor disposed on the cylinder body to control the telescopic length of the cylinder rod.

[0008] According to an embodiment of the present invention, the driving assembly further comprises a first bracket connected to the test bench, and the driving assembly is rotationally connected to an end of the first bracket away from the test bench.

[0009] According to an embodiment of the present invention, the driving assembly further comprises a first force sensor, and the first force sensor is arranged between the cylinder body and the first bracket to detect the loading force of the driving assembly on the sole model block.

[0010] According to one embodiment of the present invention, the friction assembly further includes a second force sensor connected between the spring and the sole model block, and the sole model block obtains the pressure value of the sole model block on the pedal rubber sleeve through the second force sensor.

[0011] According to an embodiment of the present invention, the friction assembly further comprises a guide rod, and the guide rod passes through the L-shaped plate and the spring in sequence and is connected to the sole mold block.

[0012] According to one embodiment of the present invention, the friction assembly further comprises a limit frame and a limit rod, wherein the limit frame is connected to the L-shaped plate and has a long hole in the vertical direction, and the limit rod is connected to the sole mold block and is arranged in the long hole.

[0013] According to an embodiment of the present invention, the rocker arm comprises a second bracket and a rocker arm body rotatably connected to the second bracket, and one end of the second bracket away from the rocker arm body is connected to the test bench.

[0014] According to an embodiment of the present invention, the pedal assembly includes a pedal body and a third bracket connected to the pedal body, and one end of the third bracket away from the pedal body is connected to the test bench.

[0015] An embodiment of the present invention has the following advantages or beneficial effects:

[0016] In the pedal rubber sleeve wear resistance test device of the present invention, the height of the pedal assembly remains unchanged, and the compression amount of the spring is adjusted by adjusting the relative position of the L-shaped plate and the rocker arm, thereby adjusting the magnitude of the friction loading force value on the pedal rubber sleeve, so that the friction area of ​​the pedal rubber sleeve is controllable; the sole model block adopts the sole shape, which can simulate the wear of the pedal rubber sleeve when a person's foot presses the pedal to the greatest extent; the movement stroke of the cylinder can be limited by the first position sensor and the second position sensor, thereby adjusting the friction stroke of the pedal rubber sleeve; when the cylinder is electrically connected to the PLC control system, the test frequency can be adjusted, and there is no human intervention in the entire test process, and operation and detection can be performed under high and low temperature test environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0018] Figure 1The figure is a front view of a pedal rubber sleeve wear resistance testing device according to an exemplary embodiment.

[0019] The reference numerals are described as follows:

[0020] 1. Test bench; 2. Pedal assembly; 21. Pedal body; 22. Third bracket; 3. Friction assembly; 31. Rocker arm; 311. Second bracket; 312. Rocker arm body; 32. L-shaped plate; 33. Spring; 34. Sole model block; 35. Second force sensor; 36. Guide rod; 37. Limit frame; 38. Limit rod; 4. Drive assembly; 41. Cylinder; 42. U-shaped block; 43. First position sensor; 44. Second position sensor; 45. First bracket; 46. First force sensor; 5. Pedal rubber sleeve. DETAILED DESCRIPTION

[0021] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0022] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0023] like Figure 1 As shown, Figure 1 A front view of a pedal rubber sleeve wear resistance testing device provided by the present invention is shown.

[0024] The pedal rubber sleeve wear resistance test device of the embodiment of the present invention includes a pedal assembly 2 connected to a test bench 1 to connect the pedal rubber sleeve 5 to the test bench 1; the friction assembly 3 includes a rocker arm 31, an L-shaped plate 32, a spring 33 and a sole model block 34, the rocker arm 31 is rotatably connected to the test bench 1, the L-shaped plate 32 is height-adjustably connected to the rocker arm 31, and the sole model block 34 is connected to the L-shaped plate 32 through a spring 33 to adjust the pressure of the sole model block 34 on the pedal rubber sleeve 5 through the height of the L-shaped plate 32; the driving assembly 4 is connected to the rocker arm 31 to drive the sole model block 34 to perform reciprocating friction on the pedal rubber sleeve 5.

[0025] Among them, the pedal body 21 is arranged on one side of the test bench 1, the pedal rubber sleeve 5 is sleeved on the top of the pedal body 21, the swing rod 31 is arranged on the right side of the pedal body 21, and the sole model block 34 is connected to the swing rod 31 through the spring 33 and the L-shaped plate 32. The bottom surface pattern of the sole model block 34 simulates the sole, which is closer to the human foot to operate the car pedal. When the sole model block 34 abuts against the pedal rubber sleeve 5, the pressure of the sole model block 34 on the pedal rubber sleeve 5 can be adjusted by adjusting the height of the connection point between the L-shaped plate 32 and the swing rod 31. There is a friction coefficient, so that the friction force of the sole model block 34 on the pedal rubber sleeve 5 can be adjusted. The driving component 4 is connected to the rocker arm 31. When the rocker arm 31 is rotated and connected to the test bench 1, the driving component 4 pushes the rocker arm 31 to swing back and forth, which can drive the L-shaped block and the sole model block 34 to move back and forth, thereby causing the sole model block 34 to generate friction loss on the pedal rubber sleeve 5. After the sole model block 34 reciprocates a preset number of times, the wear resistance test is completed, the pedal rubber sleeve 5 is removed, and the thickness of the pedal rubber sleeve 5 at the worn position is measured to confirm whether the wear amount meets the requirements.

[0026] In a preferred embodiment of the present invention, the driving assembly 4 includes a cylinder 41 and a U-shaped block 42, the rocker arm 31 passes through the open end of the U-shaped block 42 and is rotationally connected to the U-shaped block 42, the closed end of the U-shaped block 42 is connected to the cylinder rod of the cylinder 41, and the cylinder body of the cylinder 41 is connected to the test bench 1.

[0027] like Figure 1 As shown, the open end of the U-shaped block 42 is a U-shaped opening. After the rocker arm 31 passes through the U-shaped opening, it is rotationally connected to the U-shaped block 42 through a pin shaft. Due to the U-shaped opening of the U-shaped block 42, interference with the drive component 4 can be avoided when the rocker arm 31 swings back and forth.

[0028] Preferably, the air cylinder 41 is controlled by a PLC control system, and the frequency at which the drive assembly 4 drives the sole model block 34 to reciprocate can be adjusted.

[0029] In a preferred embodiment of the present invention, the driving assembly 4 further includes a first position sensor 43 and a second position sensor 44 disposed on the cylinder body to control the telescopic length of the cylinder rod.

[0030] like Figure 1As shown, the first position sensor 43 is arranged at the front end of the cylinder body, and the second position sensor 44 is arranged at the rear end of the cylinder body. The first position sensor 43 and the second position sensor 44 are arranged at corresponding positions, for example, the distance between the first position sensor 43 and the second position sensor 44 is set. When the rear end of the cylinder rod reaches the second position sensor 44, it is the maximum amplitude of the swing arm 31 swinging backward, that is, the rearmost end of the displacement of the sole model block 34. When the rear end of the cylinder rod reaches the first position sensor 43, it is the maximum amplitude of the swing arm 31 swinging forward, that is, the frontmost end of the displacement of the sole model block 34. The worn length of the pedal rubber sleeve 5 can be controlled. Combined with the elasticity of the pedal rubber sleeve 5, the worn width of the pedal rubber sleeve 5 can be determined by the pressure applied by the sole model block 34 to the pedal rubber sleeve 5 and the deformation of the pedal rubber sleeve 5. The combination of the two can control the worn area of ​​the pedal rubber sleeve 5.

[0031] In a preferred embodiment of the present invention, the driving assembly 4 further comprises a first bracket 45 connected to the test bench 1 , and the driving assembly 4 is rotatably connected to an end of the first bracket 45 away from the test bench 1 .

[0032] like Figure 1 As shown, a U-shaped opening is provided at the upper end of the first bracket 45, and the cylinder body of the cylinder 41 or the first force sensor 46 can be set in the U-shaped opening through a single earring seat and rotatably connected to the first bracket 45 through a pin shaft. The bottom of the first bracket 45 has an overlapping part with the test bench 1, and the first bracket 45 and the test bench 1 are fixed by bolts at the corresponding positions of the overlapping parts of the two, so that the cylinder 41 or the second force sensor 35 can be conveniently rotatably connected to the test bench 1.

[0033] In a preferred embodiment of the present invention, the driving assembly 4 further includes a first force sensor 46 , which is disposed between the cylinder body and the first bracket 45 to detect the loading force of the driving assembly 4 on the sole mold block 34 .

[0034] like Figure 1As shown, the front end of the first force sensor 46 is fixed to the bottom of the cylinder body of the cylinder 41, and the rear end of the first force sensor 46 is connected to the test bench 1 through the first bracket 45. Preferably, the test bench 1 also includes a single earring seat, which is arranged in the U-shaped opening of the first bracket 45 and is rotatably connected to the first bracket 45 through a pin shaft, so that when the driving component 4 applies a load force to the sole model block 34, no interference will occur even if a change in direction occurs. In the use of the car, when the direction of the pedal force is not perpendicular to the pedal rubber sleeve 5, the pedal force forms a component force in the direction of the friction force on the pedal rubber sleeve 5 that is opposite to the direction of the friction force. By setting the first force sensor 46, the magnitude of the component force in the direction of the friction force can be adjusted according to the measured value of the first force sensor 46, and then adjusted together with the gravity component to more finely simulate the magnitude of the pedal force in actual use.

[0035] In a preferred embodiment of the present invention, the friction assembly 3 also includes a second force sensor 35 connected between the spring 33 and the sole model block 34 , and the sole model block 34 obtains the pressure value of the sole model block 34 on the pedal rubber sleeve 5 through the second force sensor 35 .

[0036] like Figure 1 As shown, the L-shaped plate 32 includes a vertically connected bottom wall of the L-shaped plate 32 and a side wall of the L-shaped plate 32. The side wall of the L-shaped plate 32 has an overlapping portion with the rocker arm 31. The side wall of the L-shaped plate 32 is connected to the rocker arm 31 by bolts at the corresponding position of the overlapping portion. The rocker arm 31 may be provided with a plurality of bolt holes at equal intervals along its height direction. The bolt passes through the side wall of the L-shaped plate 32 and one of the bolt holes, so as to adjust the height of the L-shaped plate 32, thereby adjusting the initial loading force value of the control pedal rubber sleeve 5.

[0037] In a preferred embodiment of the present invention, the friction assembly 3 further includes a guide rod 36 , which passes through the L-shaped plate 32 and the spring 33 in sequence and is connected to the sole mold block 34 .

[0038] like Figure 1 As shown, a hole is opened on the bottom wall of the L-shaped plate 32, and the guide rod 36 passes through the hole to be connected to the sole model block 34. The spring 33 is sleeved on the guide rod 36, and the upper end of the spring 33 is fixed to the bottom wall of the L-shaped plate 32, and the lower end of the spring 33 is fixed to the sole model block 34. The guide rod 36 passes through the spring 33, so that the deformation of the spring 33 is always in a straight line. When the height of the pedal rubber sleeve 5 remains unchanged, by setting the height of the L-shaped plate 32 on the rocker arm 31, the compression distance of the spring 33 can be set, so that the friction force of the sole model block 34 on the pedal rubber sleeve 5 is set to remain unchanged, thereby improving the accuracy of the test data.

[0039] In a preferred embodiment of the present invention, the friction assembly 3 further includes a limit frame 37 and a limit rod 38. The limit frame 37 is connected to the L-shaped plate 32 and has a long hole in the vertical direction. The limit rod 38 is connected to the sole mold block 34 and is arranged in the long hole.

[0040] like Figure 1 As shown, the top of the limit frame 37 is fixed to the bottom wall of the L-shaped plate 32 by bolts, the guide rod 36 passes through the bottom wall of the L-shaped plate 32 and is arranged in the cavity structure surrounded by the limit frame 37, the bottom end of the guide rod 36 is connected to the sole model block 34, the limit rod 38 is fixed to the sole model block 34 by bolts or other methods, the width of the long hole is matched with the width or diameter of the limit rod 38 to limit the displacement of the sole model block 34 in the left and right direction, and prevent the sole model block 34 from shaking left and right during the test.

[0041] In a preferred embodiment of the present invention, the swing rod 31 includes a second bracket 311 and a swing rod body 312 rotatably connected to the second bracket 311 , and one end of the second bracket 311 away from the swing rod body 312 is connected to the test bench 1 .

[0042] like Figure 1 As shown, a U-shaped opening is provided at the top of the second bracket 311, and the lower end of the rocker arm 31 is provided in the U-shaped opening and is rotatably connected to the top of the second bracket 311 via a pin shaft. The second bracket 311 and the test bench 1 have an overlapping portion, and the second bracket 311 and the test bench 1 are fixed by bolts at corresponding positions of the overlapping portions, so that the rocker arm 31 can be rotatably connected to the test bench 1 more conveniently.

[0043] In a preferred embodiment of the present invention, the pedal assembly 2 includes a pedal body 21 and a third bracket 22 connected to the pedal body 21 , and one end of the third bracket 22 away from the pedal body 21 is connected to the test bench 1 .

[0044] like Figure 1 As shown, the third bracket 22 is arranged on the left side of the second bracket 311, and a U-shaped opening is arranged on the top of the third bracket 22. The bottom of the pedal body 21 is clamped between the U-shaped opening and is fixed by two or more bolts to prevent the pedal body 21 and the third bracket 22 from rotating relative to each other. The bottom of the third bracket 22 has an overlapping part with the test bench 1, and the third bracket 22 and the test bench 1 are fixed by bolts at the corresponding position of the overlapping part, so that the pedal body 21 is fixed to the test bench 1. By adding the third bracket 22, the position of the pedal rubber sleeve 5 is easier to adjust.

[0045] When the height of the pedal assembly 2 of the pedal rubber sleeve wear resistance test device of the present invention remains unchanged, the compression amount of the spring 33 is adjusted by adjusting the relative position of the L-shaped plate 32 and the rocker arm 31, thereby adjusting the magnitude of the friction loading force value on the pedal rubber sleeve 5, so that the friction area of ​​the pedal rubber sleeve 5 is controllable; the sole model block 34 adopts the sole shape, which can simulate the wear of the pedal rubber sleeve 5 when a person's foot presses the pedal to the greatest extent; the movement stroke of the cylinder 41 can be limited by the first position sensor 43 and the second position sensor 44, thereby adjusting the friction stroke of the pedal rubber sleeve 5; when the cylinder 41 is electrically connected to the PLC control system, the test frequency can be adjusted, and there is no human intervention in the entire test process, and operation and detection can be performed under high and low temperature test environments.

[0046] In the embodiments of the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0047] In the description of the embodiments of the present invention, it needs to be understood that the directions or positional relationships indicated by the terms "upper" and "lower" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0048] In the description of this specification, the description of the terms "one embodiment", "a preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pedal rubber sleeve wear resistance test device, characterized in that: include: Test bench (1); A pedal assembly (2), the pedal assembly (2) being connected to the test bench (1) so as to connect the pedal rubber sleeve (5) to the test bench (1); A friction assembly (3), the friction assembly (3) comprising a swing rod (31), an L-shaped plate (32), a spring (33) and a sole model block (34), the swing rod (31) being rotatably connected to the test bench (1), the L-shaped plate (32) being height-adjustably connected to the swing rod (31), and the sole model block (34) being connected to the L-shaped plate (32) via the spring (33) so as to adjust the pressure of the sole model block (34) on the pedal rubber sleeve (5) via the height of the L-shaped plate (32); A driving component (4), the driving component (4) being connected to the swing rod (31) to drive the sole model block (34) to perform reciprocating friction on the pedal rubber sleeve (5); The driving assembly (4) comprises a cylinder (41) and a U-shaped block (42), the swing rod (31) passes through an open end of the U-shaped block (42) and is rotationally connected to the U-shaped block (42), the closed end of the U-shaped block (42) is connected to a cylinder rod of the cylinder (41), and the cylinder body of the cylinder (41) is connected to the test bench (1); The driving assembly (4) further comprises a first bracket (45) connected to the test bench (1), and the cylinder body (41) is rotatably connected to an end of the first bracket (45) away from the test bench (1); The pedal assembly (2) comprises a pedal body (21) and a third bracket (22) connected to the pedal body (21), wherein one end of the third bracket (22) away from the pedal body (21) is connected to the test bench (1); The pedal rubber sleeve (5) is sleeved on the top of the pedal body (21).

2. The pedal rubber sleeve wear resistance test device according to claim 1, characterized in that: The driving assembly (4) further comprises a first position sensor (43) and a second position sensor (44) arranged on the cylinder body to control the telescopic length of the cylinder rod.

3. The pedal rubber sleeve wear resistance test device according to claim 1, characterized in that: The driving assembly (4) further comprises a first force sensor (46), wherein the first force sensor (46) is arranged between the cylinder body and the first bracket (45) to detect the loading force of the driving assembly (4) on the sole model block (34).

4. The pedal rubber sleeve wear resistance test device according to claim 1, characterized in that: The friction assembly (3) further comprises a second force sensor (35) connected between the spring (33) and the sole model block (34), and the sole model block (34) obtains the pressure value of the sole model block (34) on the pedal rubber sleeve (5) through the second force sensor (35).

5. The pedal rubber sleeve wear resistance test device according to claim 1, characterized in that: The friction assembly (3) further comprises a guide rod (36), wherein the guide rod (36) passes through the L-shaped plate (32) and the spring (33) in sequence and is connected to the sole mold block (34).

6. The pedal rubber sleeve wear resistance test device according to claim 1, characterized in that: The friction assembly (3) further comprises a limit frame (37) and a limit rod (38); the limit frame (37) is connected to the L-shaped plate (32) and is provided with a long hole in a vertical direction; the limit rod (38) is connected to the sole mold block (34) and is arranged in the long hole.

7. The pedal rubber sleeve wear resistance test device according to claim 1, characterized in that: The swing rod (31) comprises a second bracket (311) and a swing rod body (312) rotatably connected to the second bracket (311); an end of the second bracket (311) away from the swing rod body (312) is connected to the test bench (1).

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