Automobile pedal dynamometer

Abstract

An automobile pedal dynamometer disclosed by the present invention comprises pressure sensors, a front pedal, a rear frame and a fixing clamp, the rear frame is arranged behind the automobile pedal, the rear frame is fixedly connected with the fixing clamp, the fixing clamp is used for being fixedly connected with the automobile pedal, the plurality of pressure sensors are arranged in front of the rear frame, and the pressure sensors are arranged in front of the rear frame. The front pedal comprises a front plate matched with an automobile pedal in shape, a connecting rod and a rectangular frame, the rectangular frame is connected with the front plate through the connecting rod, the distance between the front plate and the automobile pedal is 1-5 mm, and the rectangular frame is connected with a pressure sensor. Compared with the prior art, large interference to the pedal can be reduced, the feeling difference of a driver before and after the forcemeter is installed on the pedal is effectively reduced, the pedal design which is comfortable in an experiment and conforms to ergonomics is ensured, the ergonomics requirement can be met after the forcemeter is removed, and therefore the practical application value of a design result is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of automobile detection, in particular to an automobile pedal dynamometer. Background Art

[0002] With the continuous development of the automobile industry, consumers' requirements for comprehensive automobile performance are increasing day by day. Test drive experience has become an indispensable part of evaluating automobile performance and enjoying driving pleasure in car purchase decisions. In this context, whether the design of automobile pedals conforms to ergonomic principles and the comfort it provides has become a core consideration for consumers when buying cars. When designing automobile pedals, the displacement, force changes and adaptability of human posture during the pedal stroke must be comprehensively considered. These factors are directly related to the driver's driving experience.

[0003] However, when testing with traditional automotive pedal dynamometers, the driver's feeling on the pedal with and without the dynamometer is significantly different due to the large interference it causes to the pedal itself. This difference poses a significant challenge to the ergonomic design of automotive pedals, because a pedal design that seems comfortable and ergonomic in the experiment may reveal problems that do not meet ergonomic requirements after the dynamometer is removed. Summary of the invention

[0004] In view of the above-mentioned prior art, the present invention provides a vehicle pedal dynamometer to solve the above-mentioned technical problems.

[0005] To achieve the above object, the technical solution of the embodiment of the present invention is implemented as follows:

[0006] A car pedal dynamometer comprises a pressure sensor, a front pedal, a rear frame and a fixing clip, wherein the rear frame is arranged behind the car pedal and is fixedly connected to the fixing clip, the fixing clip is used to be fixedly connected to the car pedal, a plurality of pressure sensors are arranged in front of the rear frame, the front pedal comprises a front plate, a connecting rod and a rectangular frame matching the shape of the car pedal, the rectangular frame is connected to the front plate via the connecting rod, the front plate is spaced 1 to 5 mm from the car pedal, and the rectangular frame is connected to the pressure sensor.

[0007] Furthermore, the fixing clamp includes a front clamp, a rear clamp, a first screw and a first nut, the first screw is fixedly connected to the front end of the rear frame, the rear clamp is connected to the rear end of the rear frame, the front clamp is provided with a first through hole passing through the first screw, the first nut cooperates with the first screw, and the front clamp and the rear clamp are provided with grooves embedded in the car pedal.

[0008] Furthermore, the rear frame includes a U-shaped plate, a side plate and a bottom plate, the U-shaped plate is fixedly connected to the rear clamp and the first screw, the side of the U-shaped plate is provided with the side plate, the bottom of the side plate is provided with the bottom plate, and the pressure sensor is connected to the bottom plate.

[0009] Furthermore, it also includes a U-shaped clamp, a friction roller, a transmission shaft and a friction frame, the U-shaped clamp is fixedly connected to the swing arm of the automobile pedal, the side of the U-shaped clamp is provided with the transmission shaft, the transmission shaft is connected to the friction roller, and the side of the friction roller is provided with the friction frame.

[0010] Furthermore, the bottom of the friction frame is fixedly connected to the fixed blanket.

[0011] Furthermore, the transmission shaft includes a rotating shaft, a ball, a spring and a swivel, the swivel is rotatably connected to the rotating shaft, the swivel is provided with an inclined groove, the groove depth of the inclined groove gradually decreases along one side of the rotation direction of the swivel, the spring and the ball are provided in the inclined groove, and the spring is used to push the ball to move in the direction of the smaller depth of the inclined groove.

[0012] Furthermore, the friction frame includes a base and a side plate, the side plate is arc-shaped, and two sides of the base are fixedly connected to the side plate.

[0013] Furthermore, adhesive is provided on the bottom of the base.

[0014] Furthermore, the side plate located on the left side is provided with a second through hole, and the side plate located on the right side is provided with a second screw rod, the second screw rod passes through the second through hole, and a second nut is provided on the second screw rod.

[0015] The beneficial effect of the present invention is that during the pedal force test, the staff only needs to step on the front plate to operate the car pedal. Since the front plate is almost tightly fitted to the car pedal, the staff can monitor the pedal force in real time and dynamically during the driving of the vehicle. The foot shape remains almost unchanged in the state where the dynamometer is installed and the state where the dynamometer is not installed, providing accurate measured data for the ergonomic design of the car pedal. The present invention can reduce the greater interference caused to the pedal itself, effectively reduce the difference in the driver's feeling before and after the dynamometer is installed on the pedal, ensure a comfortable and ergonomic pedal design in the experiment, and meet ergonomic requirements after removing the dynamometer, thereby ensuring the practical application value of the design results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a vehicle pedal dynamometer in an embodiment of the present application;

[0017] Figure 2This is a schematic diagram of the three-dimensional structure of a vehicle pedal dynamometer in an embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the side structure of a vehicle pedal dynamometer in an embodiment of the present application;

[0019] Figure 4 This is a front structural schematic diagram of an automobile pedal dynamometer in an embodiment of the present application;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the transmission shaft in an embodiment of the present application;

[0021] Description of Figure Numbers:

[0022] 1. Pressure sensor; 2. Front pedal; 3. Rear frame; 4. Fixing clip; 5. Front plate; 6. Connecting rod; 7. Rectangular frame; 8. Front clip; 9. Rear clip; 10. First screw; 11. First nut; 12. U-shaped plate; 13. Side plate; 14. Bottom plate; 15. U-shaped clip; 16. Friction roller; 17. Transmission shaft; 18. Friction frame; 19. Fixing blanket; 20. Rotating shaft; 21. Ball; 22. Spring; 23. Swivel; 24. Bevel groove; 25. Base; 26. Side plate; 27. Second through hole; 28. Second screw; 29. ​​Second nut; 30. Adhesive. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0025] Example 1

[0026] Please refer to the attached Figures 1 to 4The present application provides a vehicle pedal dynamometer, comprising a pressure sensor 1, a front pedal 2, a rear frame 3 and a fixing clamp 4. The rear frame 3 is arranged behind the vehicle pedal, and the rear frame 3 is fixedly connected to the fixing clamp 4. The fixing clamp 4 is used to be fixedly connected to the vehicle pedal. A plurality of pressure sensors 1 are arranged in front of the rear frame 3. During the detection process, a plurality of pressure sensors 1 are arranged between the rectangular frame 7 and the rear frame 3 to improve the accuracy of force measurement. The front pedal 2 comprises a front plate 5, a connecting rod 6 and a rectangular frame 7 matching the shape of the vehicle pedal. The rectangular frame 7 is connected to the front plate 5 through the connecting rod 6. The front plate 5 is spaced 1 to 5 mm from the vehicle pedal, and the rectangular frame 7 is connected to the pressure sensor 1. The fixing clamp 4 is installed on the vehicle pedal, and the fixing clamp 4 fixes the vehicle pedal 4 tightly. After installation, the fixing clip 4 is located on the back of the automobile pedal, the rear frame 3 is fixedly connected to the fixing clip 4, the pressure sensor 1 is installed on the fixing clip 4, the other end of the pressure sensor 1 is connected to the rectangular frame 7, the rectangular frame 7 is connected to the front plate 5 through the connecting rod 6, the shape of the front plate 5 matches the shape of the automobile pedal, and the gap between the front plate 5 and the automobile pedal is 1 to 5 mm.

[0027] During the pedal force test, the staff only needs to step on the front plate 5 to operate the car pedal. Since the front plate 5 is almost tightly fitted to the car pedal, the staff can monitor the pedal force in real time and dynamically during the driving of the vehicle. The foot shape remains almost unchanged when the dynamometer is installed and when the dynamometer is not installed, providing accurate measured data for the ergonomic design of the car pedal. Specifically, when performing pedal force measurement, the present invention can comprehensively consider the driver's subjective experience, and combine existing measurement tools to accurately measure the pedal stroke and the position data of the human foot and leg, providing unprecedented accurate data support for ergonomic design in automobile manufacturing.

[0028] The present invention can reduce the greater interference caused to the pedal itself, effectively reduce the difference in feeling of the driver before and after the dynamometer is installed on the pedal, ensure a comfortable and ergonomic pedal design in the experiment, and even after the dynamometer is removed, it can also meet ergonomic requirements, thereby ensuring the practical application value of the design results.

[0029] Specifically, the fixing clamp 4 includes a front clamp 8, a rear clamp 9, a first screw 10 and a first nut 11. The first screw 10 is fixedly connected to the front end of the rear frame 3, the rear clamp 9 is connected to the rear end of the rear frame 3, the front clamp 8 is provided with a first through hole passing through the first screw 10, the first nut 11 cooperates with the first screw 10, and the front clamp 8 and the rear clamp 9 are provided with grooves embedded in the automobile pedal. When the first nut 11 is tightened, the first screw 10 is pulled, so that the front clamp 8 and the rear clamp 9 are close to each other, and finally the upper and lower ends of the automobile pedal are clamped. The clamped grooves are embedded in the upper and lower ends of the pedal, and no slippage occurs when the driver steps on the pedal.

[0030] Specifically, the rear frame 3 includes a U-shaped plate 12, a side plate 13 and a bottom plate 14. The U-shaped plate 12 is fixedly connected to the rear clamp 9 and the first screw 10. The side of the U-shaped plate 12 is provided with the side plate 13, and the bottom of the side plate 13 is provided with the bottom plate 14. The pressure sensor 1 is connected to the bottom plate 14. The swing arm of the automobile pedal can pass through the concave part of the U-shaped plate 12. The combination of the side plate 13 and the bottom plate makes the two surfaces connected to the pressure sensor 1 parallel to each other, which can improve the accuracy of measuring the force of the automobile pedal. The combination of the side plate 13 and the bottom plate 14 also increases the space for the pressure sensor 1, and multiple models of high-precision pressure sensors 1 can be selected.

[0031] Example 2

[0032] Please refer to the attached Figures 1 to 5 The difference between this embodiment and the embodiment is that it further comprises a U-shaped clip 15, a friction roller 16, a transmission shaft 17 and a friction frame 18. The U-shaped clip 15 is fixedly connected to the swing arm of the automobile pedal. The side of the U-shaped clip 15 is provided with the transmission shaft 17, and the transmission shaft 17 is connected to the friction roller 16. The side of the friction roller 16 is provided with the friction frame 18. The friction frame 18 is fixed in the driving cabin of the automobile. The friction frame 18 contacts the friction roller 16. When the automobile pedal moves downward, the friction force between the friction roller 16 and the friction frame 18 is upward, thereby offsetting the gravity of the pedal. The force of the driver stepping on the pedal during the test is the same as the force of stepping on the pedal during daily driving. The driver's feeling can be detected without affecting the pedal force. The staff can dynamically detect the force of the automobile pedal during the driving of the automobile, which can provide a data basis for the ergonomics of automobile pedal design.

[0033] Specifically, the bottom of the friction frame 18 is fixedly connected to the fixing blanket 19. The fixing blanket 19 is laid on the floor of the cab to improve the fixing effect of the friction frame 18.

[0034] Preferably, the transmission shaft 17 includes a rotating shaft 20, a ball 21, a spring 22 and a rotating ring 23, wherein the rotating ring 23 is rotatably connected to the rotating shaft 20, and the rotating ring 23 is provided with an inclined groove 24, wherein the groove depth of the inclined groove 24 gradually decreases along one side of the rotating direction of the rotating ring 23, wherein the spring 22 and the ball 21 are arranged in the inclined groove 24, wherein the spring 22 is used to push the ball 21 to move in the direction of the smaller depth of the inclined groove 24. When the automobile pedal moves downward, the friction roller 16 and the rotating ring 23 rotate synchronously, and when the rotating ring 23 rotates, the inclined groove 24 moves so that the ball 21 moves to the side with the smaller groove depth, so that the ball 21 blocks the rotating shaft 20 and the rotating ring 23, and the friction roller 16 cannot rotate at this time and rubs against the friction frame 18, and the friction resistance is used to offset the gravity of the dynamometer, so that the driver's feeling can be not affected when the pedal force is detected, and the staff can dynamically detect the force of the automobile pedal during the driving of the automobile, which can provide a data basis for the ergonomics of the automobile pedal design. When the pedal is released, the swing arm of the automobile pedal moves upward. At this time, when the swivel 23 rotates, the inclined groove 24 moves to move the ball 21 to the side with a larger groove depth. The ball 21 rotates freely between the rotating shaft 20 and the swivel 23. The rotating shaft 20 and the swivel 23 can also rotate freely. When the pedal pops open, it is less affected by the friction resistance of the friction roller 16, thereby improving the accuracy of the detection and providing a data basis for the ergonomics of automobile pedal design.

[0035] Specifically, the friction frame 18 includes a base 25 and a side plate 26, the side plate 26 is arc-shaped, and the two sides of the base 25 are fixedly connected to the side plate 26. The arc of the side plate 26 is close to the swing arm movement amplitude of the automobile pedal, and the side plates 26 on both sides are rubbed with the friction roller 16 to prevent the pedal from shaking left and right to affect the detection effect.

[0036] Specifically, a bonding adhesive 30 is provided at the bottom of the base 25 to improve the fixing effect of the base 25 .

[0037] Specifically, the side plate 26 located on the left side is provided with a second through hole 27, and the side plate 26 located on the right side is provided with a second screw 28, the second screw 28 passes through the second through hole 27, and the second screw 28 is provided with a second nut 29. The friction between the side plate 26 and the friction roller 16 is adjusted by the second screw 28 and the second nut 29. Optionally, the spacing above the side plate 26 is slightly smaller than the spacing below by the second screw 28 and the second nut 29. When the friction roller 16 moves downward, the friction at the bottom is slightly smaller than the friction at the top. When it moves to the bottom, the force arm of gravity gradually decreases. By reducing the friction, the effects of gravity and friction are offset each other, the accuracy of detection is improved, and a data basis is provided for the ergonomics of automobile pedal design.

[0038] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vehicle pedal dynamometer, characterized in that: It includes a pressure sensor, a front pedal, a rear frame and a fixing clip. The rear frame is arranged behind the automobile pedal and is fixedly connected to the fixing clip. The fixing clip is used to be fixedly connected to the automobile pedal. A plurality of pressure sensors are arranged in front of the rear frame. The front pedal includes a connecting rod, a rectangular frame and a front plate matching the shape of the automobile pedal. The rectangular frame is connected to the front plate through the connecting rod. The front plate is spaced 1 to 5 mm from the automobile pedal. The rectangular frame is connected to the pressure sensor.

2. The automobile pedal dynamometer according to claim 1, characterized in that: The fixing clamp includes a front clamp, a rear clamp, a first screw and a first nut. The first screw is fixedly connected to the front end of the rear frame, and the rear clamp is connected to the rear end of the rear frame. The front clamp is provided with a first through hole passing through the first screw, and the first nut cooperates with the first screw. The front clamp and the rear clamp are provided with grooves embedded in the car pedal.

3. The automobile pedal dynamometer according to claim 1, characterized in that: The rear frame includes a U-shaped plate, a side plate and a bottom plate. The U-shaped plate is fixedly connected to the rear clamp and the first screw. The side plates are provided on the sides of the U-shaped plate, the bottom of the side plates is provided with the bottom plate, and the pressure sensor is connected to the bottom plate.

4. The automobile pedal dynamometer according to claim 1, characterized in that: It also includes a U-shaped clip, a friction roller, a transmission shaft and a friction frame. The U-shaped clip is fixedly connected to the swing arm of the automobile pedal, the transmission shaft is arranged on the side of the U-shaped clip, the transmission shaft is connected to the friction roller, and the friction frame is arranged on the side of the friction roller.

5. The automobile pedal dynamometer according to claim 1, characterized in that: The bottom of the friction frame is fixedly connected to the fixed blanket.

6. The automobile pedal dynamometer according to claim 1, characterized in that: The transmission shaft includes a rotating shaft, a ball, a spring and a swivel, the swivel is rotatably connected to the rotating shaft, the swivel is provided with an inclined groove, the groove depth of the inclined groove gradually decreases along one side of the rotation direction of the swivel, the spring and the ball are arranged in the inclined groove, the spring is used to push the ball to move in the direction of the smaller depth of the inclined groove.

7. The automobile pedal dynamometer according to claim 1, characterized in that: The friction frame comprises a base and a side plate, the side plate is arc-shaped, and two sides of the base are fixedly connected to the side plate.

8. The automobile pedal dynamometer according to claim 7, characterized in that: The bottom of the base is provided with adhesive.

9. The automobile pedal dynamometer according to claim 7, characterized in that: The side plate located on the left side is provided with a second through hole, and the side plate located on the right side is provided with a second screw rod, the second screw rod passes through the second through hole, and a second nut is provided on the second screw rod.

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