Automobile carpet simulating heel friction tester

Abstract

The utility model discloses a car carpet simulation shoe heel friction testing machine, including frame, sample clamp, testing mechanism and drive mechanism, testing mechanism at least includes mounting bracket, male shoe indenter test subassembly, female shoe indenter test subassembly and indenter height adjusting subassembly, the below of male shoe indenter test subassembly, female shoe indenter test subassembly all is provided with friction contact head, and indenter height adjusting subassembly controls friction contact head optional up and down reciprocating motion, and drive mechanism at least includes first linear module and second linear module, so, without disassembling and replacing indenter, can complete the test of different shoe type to carpet wear, adjusts the adhesion pressure of indenter and carpet, so, can complete simulation actual walking in shoe heel lift, the compound action of horizontal friction of down pressure adhesion, realizes the quantization test of carpet wear rule under different pressure conditions.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing and testing machines, and in particular to an automotive carpet simulation shoe heel friction testing machine. Background Technology

[0002] As a crucial interior component of a vehicle, automotive carpets endure the constant pressure of footsteps and shoe friction from passengers. Their resistance to friction and wear directly determines their lifespan and the overall aesthetics of the interior. Heel friction is a primary factor contributing to localized wear on automotive carpets (such as in the driver's and passenger's foot areas). Differences in heel shape and contact area between different shoe types (men's and women's shoes), as well as variations in the pressure exerted by different passengers, significantly impact the degree of carpet wear. Therefore, during the research and development and production of automotive carpets, it is essential to utilize specialized testing machines to simulate the heel friction process under real-world usage conditions to evaluate their wear resistance.

[0003] Existing automotive carpet and shoe heel friction testing machines mostly use single-specification test heads (only suitable for men's or women's shoe heels). If it is necessary to test the wear effect of different shoe types on carpets, the test head needs to be disassembled and replaced, which is cumbersome and time-consuming, seriously affecting testing efficiency. Secondly, the testing machine uses a single linear module to drive the testing mechanism. Since the testing mechanism (including men's / women's shoe test head components) has a certain weight, single module drive is prone to causing the testing mechanism to sag on the side away from the module, resulting in uneven force on the contact surface between the test head and the carpet, causing the testing mechanism to shift in the horizontal direction, resulting in uneven friction force.

[0004] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide an automotive carpet simulation shoe heel friction testing machine. Through the design of men's shoe indenter testing components, women's shoe indenter testing components, and drive mechanism, the test of carpet wear on different shoe types can be completed by disassembling and replacing the indenter. It can completely simulate the complex actions of heel lifting, pressing down and contacting, and horizontal friction during actual walking, and realize the quantitative test of carpet wear patterns under different pressure conditions.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A car carpet simulated shoe heel friction tester includes a frame and a sample clamp set on the frame for positioning and clamping the carpet sample, a test mechanism for testing the heel friction of the carpet, and a drive mechanism for driving the test mechanism to move back and forth parallel to the surface of the carpet sample.

[0008] The frame has a horizontal worktable, and the sample clamp is set on the horizontal worktable;

[0009] The testing mechanism includes at least a mounting frame and a men's shoe indenter testing component and a women's shoe indenter testing component disposed below the mounting frame, as well as an indenter height adjustment component for adjusting the height of the men's shoe indenter testing component and the women's shoe indenter testing component; the men's shoe indenter testing component and the women's shoe indenter testing component are located above the sample clamp, and each of the men's shoe indenter testing component and the women's shoe indenter testing component is provided with a friction contact head simulating a shoe heel below it; the indenter height adjustment component is respectively connected to the men's shoe indenter testing component and the women's shoe indenter testing component to control the friction contact head of the men's shoe indenter testing component and the women's shoe indenter testing component to selectively move up and down reciprocally, so as to adjust the contact pressure between the friction contact head and the carpet sample;

[0010] The driving mechanism is located on the left and right sides of the sample holder; the driving mechanism includes at least a first linear module and a second linear module, and each of the sliders of the first linear module and the second linear module is provided with a movable plate. One end of the mounting frame is connected to the movable plate. The first linear module and the second linear module drive the movable plate to move back and forth, so as to drive the testing mechanism to reciprocate in a direction parallel to the front and back of the carpet sample surface.

[0011] As a preferred embodiment, the men's shoe indentation testing assembly includes a men's shoe indentation load and a men's shoe friction contact head for simulating the friction contact surface of the heel, wherein the men's shoe indentation load is connected to the men's shoe friction contact head via a first connecting shaft; the women's shoe indentation testing assembly includes a women's shoe indentation load and a women's shoe friction contact head for simulating the friction contact surface of the heel, wherein the women's shoe indentation load is connected to the women's shoe friction contact head via a second connecting shaft.

[0012] As a preferred embodiment, the movable plate includes a first vertical plate and a second vertical plate. The first vertical plate is connected to the second vertical plate via a horizontal plate. The first vertical plate is mounted on the movable plate of the first linear module, and the second vertical plate is mounted on the movable plate of the second linear module. The first linear module and the second linear module synchronously drive their respective movable plates to move back and forth along the length direction of their respective linear modules, thereby driving the testing mechanism to reciprocate in a front-back direction parallel to the surface of the carpet sample, so that the heel indenter rubs against the carpet sample.

[0013] As a preferred embodiment, the pressure head height adjustment assembly includes at least a connecting plate, several telescopic rods, and a first driving device. The connecting plate is connected to a first connecting shaft and a second connecting shaft, and the telescopic rods are connected to the connecting plate and a transverse plate, respectively. The output end of the first driving device is connected to the connecting plate, and the first driving device controls the connecting plate to reciprocate up and down to adjust the contact pressure between the friction contact head and the carpet sample.

[0014] As a preferred embodiment, the movement directions of the first linear module and the second linear module are parallel to the length direction of the carpet sample and move synchronously.

[0015] As a preferred embodiment, the first linear module is connected to the second linear module via a module connecting shaft. The driving mechanism further includes a second driving device, the output end of which is connected to the first linear module, so that the second driving device controls the movement of the movable plates of the first and second linear modules respectively.

[0016] As a preferred embodiment, the sample fixture includes an adjustable pressure plate and a locking element for clamping the carpet sample. The adjustable pressure plate includes a placement plate and an adjustment plate. The placement plate and the adjustment plate are adjustablely locked by the locking element, which can effectively prevent the carpet sample from shifting or wrinkling during reciprocating friction and ensure that the friction trajectory of the heel pressure head always conforms to the preset path.

[0017] As a preferred embodiment, the frame is also equipped with a controller, which is connected to the first drive device and the second device respectively.

[0018] As a preferred embodiment, the first driving device is a cylinder, and the second driving device is a servo motor.

[0019] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly achieves carpet wear testing by designing men's and women's shoe indentation testing components without disassembling and replacing the indentation head, simplifying the operation process. Secondly, the indentation head height adjustment component can control the up-and-down reciprocating movement of the indentation head, adjusting the contact pressure between the indentation head and the carpet. Furthermore, the moving mechanism drives the horizontal reciprocating movement of the testing mechanism, thus fully simulating the complex actions of heel lifting, pressing down, and horizontal friction during actual walking, achieving quantitative testing of carpet wear patterns under different pressure conditions.

[0020] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0022] Figure 2 This is a structural diagram of the drive mechanism and mounting bracket according to an embodiment of this utility model;

[0023] Figure 3 This is a structural diagram of the sample clamp and testing mechanism according to an embodiment of this utility model;

[0024] Figure 4 This is a structural diagram of a men's shoe indenter testing assembly according to an embodiment of this utility model;

[0025] Figure 5 This is a structural diagram of a women's shoe indenter testing component according to an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached diagram:

[0027] 1. Frame; 11. Horizontal worktable

[0028] 2. Sample clamp 21. Adjustable pressure plate

[0029] 22. Locking component; 211. Placement plate

[0030] 212. Adjustment plate

[0031] 3. Testing mechanism 31. Mounting frame

[0032] 32. Men's shoe pressure test component; 33. Women's shoe pressure test component

[0033] 34. Pressure head height adjustment assembly

[0034] 321. Weight-bearing head for men's shoes; 322. Friction contact head for men's shoes.

[0035] 323. First connecting shaft

[0036] 331. Weight-bearing head for women's shoes; 332. Friction contact head for women's shoes.

[0037] 333, Second connecting shaft

[0038] 341. Connecting plate; 342. Telescopic pole

[0039] 343. First driving device

[0040] 4. Drive mechanism 41. First linear module

[0041] 42. Second linear module 43. Movable plate

[0042] 44. Second drive unit; 45. Module connecting shaft

[0043] 431. First vertical plate

[0044] 432. Second vertical plate; 433. Horizontal plate

[0045] 5. Controller. Detailed Implementation

[0046] Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0047] In the description of this utility model, it should be noted that the directional terms such as "up", "down", "front", "back", "left", and "right" indicate the orientation and positional relationship based on the accompanying drawings or the orientation or positional relationship shown when wearing and using the device normally. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0048] A car carpet simulation shoe heel friction tester includes a frame 1, a sample clamp 2, a testing mechanism 3, and a drive mechanism 4.

[0049] The sample holder 2, the testing mechanism 3, and the driving mechanism 4 are mounted on the frame 1.

[0050] The sample clamp 2 is used to position and clamp the carpet sample; the testing mechanism 3 is used to perform a heel friction test on the carpet; the driving mechanism 4 is used to drive the testing mechanism 3 to move back and forth parallel to the surface of the carpet sample.

[0051] The frame 1 has a horizontal worktable 11, and the sample clamp 2 is disposed on the horizontal worktable 11. Preferably, the sample clamp 2 includes an adjustable pressure plate 21 and a locking member 22 for clamping the carpet sample. The adjustable pressure plate 21 includes a placement plate 211 and an adjustment plate 212. The placement plate 211 and the adjustment plate 212 are adjustablely locked by the locking member 22, which can effectively prevent the carpet sample from shifting or wrinkling during reciprocating friction and ensure that the friction trajectory of the shoe heel pressure head always conforms to the preset path.

[0052] The testing mechanism 3 includes at least a mounting frame 31 and a men's shoe indenter testing component 32 and a women's shoe indenter testing component 33 disposed below the mounting frame 31, and an indenter height adjustment component 34 for adjusting the height of the men's shoe indenter testing component 32 and the women's shoe indenter testing component 33; the men's shoe indenter testing component 32 and the women's shoe indenter testing component 33 are located above the sample clamp 2, and each of the men's shoe indenter testing component 32 and the women's shoe indenter testing component 33 is provided with a friction contact head simulating a shoe heel below it; the indenter height adjustment component 34 is connected to the men's shoe indenter testing component 32 and the women's shoe indenter testing component 33 respectively, so as to control the friction contact head of the men's shoe indenter testing component 32 and the women's shoe indenter testing component 33 to selectively move up and down to adjust the contact pressure between the friction contact head and the carpet sample;

[0053] Preferably, the men's shoe indentation testing assembly 32 includes a men's shoe indentation load 321 and a men's shoe friction contact head 322 for simulating the friction contact surface of the heel, wherein the men's shoe indentation load 321 is connected to the men's shoe friction contact head 322 via a first connecting shaft 323; the women's shoe indentation testing assembly 33 includes a women's shoe indentation load 331 and a women's shoe friction contact head 332 for simulating the friction contact surface of the heel, wherein the women's shoe indentation load 331 is connected to the women's shoe friction contact head 332 via a second connecting shaft 333.

[0054] Preferably, the pressure head height adjustment assembly 34 includes at least a connecting plate 341, a plurality of telescopic rods 342, and a first driving device 343. The connecting plate 341 is connected to a first connecting shaft 323 and a second connecting shaft 333, respectively. The telescopic rods 342 are connected to the connecting plate 341 and a transverse plate 433, respectively. The output end of the first driving device 343 is connected to the connecting plate 341. The first driving device 343 controls the connecting plate 341 to move up and down reciprocally to adjust the contact pressure between the friction contact head and the carpet sample.

[0055] The driving mechanism 4 is located on the left and right sides of the sample holder 2. The driving mechanism 4 includes at least a first linear module 41 and a second linear module 42. The sliders of the first linear module 41 and the second linear module 42 are each provided with a movable plate 43. One end of the mounting bracket 31 is connected to the movable plate 43. The first linear module 41 and the second linear module 42 drive the movable plate 43 to move back and forth, so as to drive the testing mechanism 3 to reciprocate in a direction parallel to the surface of the carpet sample.

[0056] Preferably, the movement direction of the first linear module 41 and the second linear module 42 is parallel to the length direction of the carpet sample and they move synchronously. Preferably, the first linear module 41 is connected to the second linear module 42 via a module connecting shaft 45. The drive mechanism 4 further includes a second drive device 44, the output end of which is connected to the first linear module 41, so that the second drive device 44 controls the movement of the movable plates 43 of the first linear module 41 and the second linear module 42 respectively. Preferably, a controller 5 is also provided on the frame 1, and the controller 5 is connected to the first drive device 343 and the second device respectively. Preferably, the first drive device 343 is a cylinder, and the second drive device 44 is a servo motor. It is common knowledge in the art that the cylinder is controlled by the controller 5 to perform telescopic movement, which necessarily involves a pneumatic circuit (such as an air source, control valve, pipeline, etc.), and will not be elaborated here.

[0057] Preferably, the movable plate 43 includes a first vertical plate 431 and a second vertical plate 432. The first vertical plate 431 is connected to the second vertical plate 432 through a horizontal plate 433. The first vertical plate 431 is mounted on the movable plate 43 of the first linear module 41, and the second vertical plate 432 is mounted on the movable plate 43 of the second linear module 42. The first linear module 41 and the second linear module 42 synchronously drive their respective movable plates 43 to move back and forth along the length direction of their respective linear modules, so as to drive the testing mechanism 3 to reciprocate along the front and back direction parallel to the surface of the carpet sample, so that the heel indenter rubs against the carpet sample.

[0058] In this embodiment, when the second drive device 44 is a servo motor, its output shaft is directly connected to the drive pulley shaft of the first linear module 41 through a coupling; when the servo motor starts, the power directly drives the drive pulley of the first module to rotate, thereby driving the synchronous belt of the first module to move, and the synchronous belt then drives the movable plate 43 of the first module to move linearly along the module guide rail.

[0059] When the drive pulley shaft of the first linear module 41 drives the drive pulley shaft of the second linear module 42 to rotate synchronously through the connecting shaft, the drive pulley of the second linear module 42 drives its own synchronous belt to move, thereby driving the movable plate 43 of the second linear module 42 to move linearly along the guide rail. Since the drive pulleys of the two modules rotate at the same speed (power is transmitted through the same connecting shaft), and the synchronous belt pitch and pulley tooth count of the two modules are the same (same selection), the movement speed and displacement of the movable plate 43 of the two modules are completely synchronized.

[0060] Furthermore, the movable plates 43 of the first and second linear modules 42 are rigidly connected to the first vertical plate 431 and the second vertical plate 432 of the testing mechanism 3 by bolts (with positioning pins to avoid relative sliding); when the movable plates 43 move synchronously, the first vertical plate 431 and the second vertical plate 432 drive the men's / women's shoe indenter testing assembly 33 to move smoothly back and forth along the surface of the carpet sample.

[0061] Furthermore, the second drive device 44 (servo motor) can be paired with an encoder (such as a 20-bit absolute encoder) to collect motor speed / position signals in real time. At the same time, a linear grating ruler is installed on the movable plate 43 of one of the modules to feed back the actual displacement signal of the movable plate 43 to the controller 5 (such as a PLC or motion controller 5), forming a dual closed-loop control of the motor and the grating ruler. If the two modules have a slight synchronization deviation due to load changes (such as one movable plate 43 lagging behind), the controller 5 can fine-tune the motor output to ensure that the displacement of the two movable plates 43 is consistent.

[0062] The key design feature of this invention lies in its design of men's and women's shoe indenter testing components. This allows for testing the carpet wear of different shoe types without disassembling or replacing the indenter, simplifying the operation process. Secondly, the indenter height adjustment component controls the up-and-down reciprocating motion of the indenter, adjusting the contact pressure between the indenter and the carpet. Furthermore, the moving mechanism drives the horizontal reciprocating motion of the testing mechanism. In this way, it can fully simulate the complex actions of heel lifting, pressing down, and horizontal friction during actual walking, enabling quantitative testing of carpet wear patterns under different pressure conditions.

[0063] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A car carpet simulation shoe heel friction tester, characterized in that: It includes a frame and a sample fixture mounted on the frame for positioning and clamping the carpet sample, a test mechanism for performing heel friction tests on the carpet, and a drive mechanism for driving the test mechanism to move back and forth parallel to the surface of the carpet sample. The frame has a horizontal worktable, and the sample clamp is set on the horizontal worktable; The testing mechanism includes at least a mounting frame and a men's shoe indenter testing component and a women's shoe indenter testing component disposed below the mounting frame, as well as an indenter height adjustment component for adjusting the height of the men's shoe indenter testing component and the women's shoe indenter testing component; the men's shoe indenter testing component and the women's shoe indenter testing component are located above the sample clamp, and each of the men's shoe indenter testing component and the women's shoe indenter testing component is provided with a friction contact head simulating a shoe heel below it; the indenter height adjustment component is respectively connected to the men's shoe indenter testing component and the women's shoe indenter testing component to control the friction contact head of the men's shoe indenter testing component and the women's shoe indenter testing component to selectively move up and down reciprocally, so as to adjust the contact pressure between the friction contact head and the carpet sample; The driving mechanism is located on the left and right sides of the sample holder; the driving mechanism includes at least a first linear module and a second linear module, and each of the sliders of the first linear module and the second linear module is provided with a movable plate. One end of the mounting frame is connected to the movable plate. The first linear module and the second linear module drive the movable plate to move back and forth, so as to drive the testing mechanism to reciprocate in a direction parallel to the front and back of the carpet sample surface.

2. The automotive carpet simulated shoe heel friction testing machine according to claim 1, characterized in that: The men's shoe indentation testing assembly includes a men's shoe indentation load and a men's shoe friction contact head for simulating the friction contact surface of the heel. The men's shoe indentation load is connected to the men's shoe friction contact head via a first connecting shaft. The women's shoe indentation testing assembly includes a women's shoe indentation load and a women's shoe friction contact head for simulating the friction contact surface of the heel. The women's shoe indentation load is connected to the women's shoe friction contact head via a second connecting shaft.

3. The automotive carpet simulated shoe heel friction testing machine according to claim 2, characterized in that: The movable plate includes a first vertical plate and a second vertical plate. The first vertical plate is connected to the second vertical plate via a horizontal plate. The first vertical plate is mounted on the movable plate of the first linear module, and the second vertical plate is mounted on the movable plate of the second linear module. The first linear module and the second linear module synchronously drive their respective movable plates to move back and forth along the length direction of their respective linear modules, so as to drive the testing mechanism to reciprocate in a front-back direction parallel to the surface of the carpet sample, so that the heel indenter rubs against the carpet sample.

4. The automotive carpet simulated shoe heel friction testing machine according to claim 3, characterized in that: The pressure head height adjustment assembly includes at least a connecting plate, several telescopic rods, and a first driving device. The connecting plate is connected to a first connecting shaft and a second connecting shaft, and the telescopic rods are connected to the connecting plate and a transverse plate, respectively. The output end of the first driving device is connected to the connecting plate. The first driving device controls the connecting plate to reciprocate up and down to adjust the contact pressure between the friction contact head and the carpet sample.

5. The automotive carpet simulated shoe heel friction testing machine according to claim 1, characterized in that: The first linear module and the second linear module move in the same direction as the length of the carpet sample and move synchronously.

6. The automotive carpet simulated shoe heel friction testing machine according to claim 4, characterized in that: The first linear module is connected to the second linear module via a module connecting shaft. The driving mechanism also includes a second driving device, the output end of which is connected to the first linear module, so that the second driving device controls the movement of the movable plates of the first linear module and the second linear module respectively.

7. The automotive carpet simulated shoe heel friction testing machine according to claim 1, characterized in that: The sample clamp includes an adjustable pressure plate and a locking element for clamping the carpet sample. The adjustable pressure plate includes a placement plate and an adjustment plate, which are adjustablely locked by the locking element.

8. The automotive carpet simulated shoe heel friction testing machine according to claim 6, characterized in that: The frame is also equipped with a controller, which is connected to the first drive device and the second device respectively.

9. The automotive carpet simulated shoe heel friction testing machine according to claim 8, characterized in that: The first driving device is a cylinder, and the second driving device is a servo motor.

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