Buffering force adjustable pedal structure

Abstract

The present invention relates to the field of vehicle engineering, and particularly to a pedal structure with adjustable buffer force, which includes a pedal bracket, a base, an elastic support member, an auxiliary buffer rod, and a buffer force adjustment knob; one end of the pedal bracket is hinged to one end of the base; one end of the elastic support member is hinged to a first connection portion on the pedal bracket, and the other end of the elastic support member is hinged to the other end of the base; one end of the auxiliary buffer rod is hinged to a second connection portion on the pedal bracket, and the other end of the auxiliary buffer rod is hinged to the other end of the base; the distance between the first connection portion and the second connection portion is adjustable; the buffer force adjustment knob is arranged on the auxiliary buffer rod, and the buffer force adjustment knob includes an oil return flux control switch extending into the auxiliary buffer rod. The pedal structure with adjustable buffer force provided by the present invention can improve the user experience and enhance the product quality, and has the advantages of good adjustment flexibility and strong safety.

Description

Technical Field

[0001] The present invention relates to the field of vehicle engineering, and particularly to a pedal structure with adjustable buffering force. Background Art

[0002] After the user releases the pedal, the pedal of the vehicle pedal structure will quickly bounce back. The vibration of the pedal against the user's foot is likely to cause user trampling fatigue, posing certain potential safety hazards and being unfavorable for improving the user's driving experience. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a pedal structure with adjustable buffering force that can improve the pedal feedback feeling.

[0004] To solve the above technical problem, the technical solution adopted by the present invention is: a pedal structure with adjustable buffering force, including a pedal bracket, a base, an elastic support member, an auxiliary buffer rod, and a buffering force adjustment knob;

[0005] One end of the pedal bracket is hinged to one end of the base;

[0006] One end of the elastic support member is hinged to a first connection portion on the pedal bracket, and the other end of the elastic support member is hinged to the other end of the base;

[0007] One end of the auxiliary buffer rod is hinged to a second connection portion on the pedal bracket, and the other end of the auxiliary buffer rod is hinged to the other end of the base;

[0008] The distance between the first connection portion and the second connection portion is adjustable;

[0009] The buffering force adjustment knob is arranged on the auxiliary buffer rod, and the buffering force adjustment knob includes an oil return flux control switch extending into the auxiliary buffer rod.

[0010] Further, the auxiliary buffer rod includes a piston rod, an oil cylinder, an oil return housing, and an oil return piston. One end of the piston rod is hinged to the second connection portion on the pedal bracket, the other end of the piston rod extends into the oil cylinder from one end of the oil cylinder, the other end of the oil cylinder is connected to the oil return housing, the oil return housing is hinged to the other end of the base, the inner cavity of the oil return housing is divided into an adjustment chamber and a compression chamber by the oil return piston, the other end of the oil cylinder is communicated with the adjustment chamber, and the oil return flux control switch extends into the adjustment chamber.

[0011] Further, the auxiliary buffer rod further includes a first spring. One end of the first spring abuts against the inner wall of the oil cylinder, and the other end of the first spring abuts against the other end of the piston rod.

[0012] Further, the buffer force adjustment knob further includes a knob body. An adjustment hole communicating with the adjustment chamber is provided on the side wall of the oil return housing. The knob body is in threaded fit with the adjustment hole. The knob body is rotatably connected to the oil return flux control switch, and the oil return flux control switch is provided with more than two oil return through holes with different apertures.

[0013] Further, the knob body is provided with a mounting hole. An oil guide groove is provided on the side wall of the knob body. An oil guide hole communicating with the mounting hole is provided in the oil guide groove. The oil return flux control switch is rotatably arranged in the mounting hole. When the auxiliary buffer rod is compressed, the oil in the auxiliary buffer rod sequentially flows through the oil return through hole, the oil guide hole and the oil guide groove.

[0014] Further, a buffer force level marking portion is provided on the knob body.

[0015] Further, the pedal bracket is provided with more than two first assembly holes at the first connection portion. One end of the elastic support member is hinged to the first assembly hole. The pedal bracket is provided with more than two second assembly holes at the second connection portion. One end of the auxiliary buffer rod is hinged to the second assembly hole. The other end of the base is provided with more than two third assembly holes. The other ends of the elastic support member and the auxiliary buffer rod are respectively hinged to the corresponding third assembly holes.

[0016] Further, the elastic support member includes a support rod, a slider and a second spring. One end of the support rod is hinged to the first connection portion on the pedal bracket. The other end of the support rod is hinged to the slider. The slider is slidably connected to the base. Two ends of the second spring are respectively connected to the slider and the base.

[0017] Further, the distance from the first connection portion to one end of the pedal bracket is less than the distance from the second connection portion to one end of the pedal bracket.

[0018] Further, a pedal body is further included, and the pedal body is connected to the other end of the pedal bracket.

[0019] The beneficial effects of the present invention are as follows: A pedal structure with adjustable buffering force is provided. After the pedal is depressed, the pedal bracket flips on the base, and the restoring force of the pedal bracket is provided by an elastic support member. During the resetting process of the pedal bracket, the buffering effect of the auxiliary buffer rod prevents it from immediately flipping up, so it can reduce the vibration received by the user, reduce the fatigue of the user, and is beneficial to improving the driving experience of the user. The distance between the first connecting portion and the second connecting portion is designed to be adjustable, which is convenient for adjusting the positions of the auxiliary buffer rod and the elastic support member between the base and the pedal bracket, so as to more flexibly control the pedal feel and the reset buffering damping force, thereby improving the user experience and enhancing the product quality. The flux of the oil return oil path of the auxiliary buffer rod is adjusted by using a buffering force adjustment knob, so as to adjust the reaction force generated by the oil pressure in the auxiliary buffer rod when the pedal resets, and further adjust the pedal reset damping buffering effect, further enhancing the feedback feeling of the pedal, improving the user driving experience, and eliminating the potential safety hazards existing in the traditional pedal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the pedal structure with adjustable buffering force according to an embodiment of the present invention;

[0021] Figure 2 It is a cross-sectional view of the pedal structure with adjustable buffering force according to an embodiment of the present invention;

[0022] Figure 3 It is a schematic structural diagram of the elastic support member according to an embodiment of the present invention;

[0023] Figure 4 It is a schematic structural diagram of the auxiliary buffer rod according to an embodiment of the present invention;

[0024] Figure 5 It is a cross-sectional view of the auxiliary buffer rod according to an embodiment of the present invention;

[0025] Figure 6 It is a schematic structural diagram of the buffering force adjustment knob according to an embodiment of the present invention;

[0026] Figure 7 It is another schematic structural diagram of the buffering force adjustment knob according to an embodiment of the present invention;

[0027] Figure 8 It is another schematic structural diagram of the buffering force adjustment knob according to an embodiment of the present invention;

[0028] Figure 9 It is another schematic structural diagram of the buffering force adjustment knob according to an embodiment of the present invention;

[0029] Label Description:

[0030] 1. Pedal bracket; 2. Base; 21. First connecting part; 211. First assembly hole; 22. Second connecting part; 221. Second assembly hole; 23. Third assembly hole; 3. Elastic support member; 31. Support rod; 32. Slider; 33. Second spring; 4. Auxiliary buffer rod; 41. Piston rod; 42. Oil cylinder; 43. Oil return housing; 431. Adjustment chamber; 432. Compression chamber; 433. Adjustment hole; 44. Oil return piston; 45. First spring; 5. Buffer force adjustment knob; 51. Return oil flux control switch; 511. Return oil through hole; 52. Knob body; 521. Mounting hole; 522. Oil guide groove; 521. Oil guide hole. DETAILED DESCRIPTION

[0031] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0032] The present invention provides a pedal structure with adjustable buffering force, which is applied to a vehicle pedal device and can realize flexible adjustment of the pedal resetting force.

[0033] Please refer to Figures 1 to 8 , a cushioning force adjustable pedal structure includes a pedal bracket 1, a base 2, an elastic support member 3, an auxiliary cushioning rod 4 and a cushioning force adjusting knob 5;

[0034] One end of the pedal bracket 1 is hinged to one end of the base 2;

[0035] One end of the elastic support member 3 is hinged to the first connecting portion 21 on the pedal bracket 1, and the other end of the elastic support member 3 is hinged to the other end of the base 2;

[0036] One end of the auxiliary buffer rod 4 is hinged to the second connecting portion 22 on the pedal bracket 1, and the other end of the auxiliary buffer rod 4 is hinged to the other end of the base 2;

[0037] The distance between the first connecting portion 21 and the second connecting portion 22 is adjustable;

[0038] The buffer force adjustment knob 5 is disposed on the auxiliary buffer rod 4 , and the buffer force adjustment knob 5 includes an oil return flux control switch 51 extending into the auxiliary buffer rod 4 .

[0039] As can be seen from the above description, the beneficial effects of the present invention are as follows: A pedal structure with adjustable buffer force is provided. After the pedal is depressed, the pedal bracket 1 flips on the base 2, and the restoring force of the pedal bracket 1 is provided by the elastic support member 3. During the reset process of the pedal bracket 1, the buffer effect of the auxiliary buffer rod 4 is used to prevent it from flipping up immediately, so that the vibration received by the user can be reduced, the fatigue of the user can be reduced, and it is beneficial to improve the driving experience of the user; the distance between the first connecting portion 21 and the second connecting portion 22 is designed to be adjustable, which is convenient for adjusting the positions of the auxiliary buffer rod 4 and the elastic support member 3 between the base 2 and the pedal bracket 1, so as to more flexibly control the pedal feel and the reset buffer damping force, thereby improving the user experience and enhancing the product quality; the buffer force adjustment knob 5 is used to adjust the flux of the oil return oil path of the auxiliary buffer rod 4, so as to adjust the reaction force generated by the oil pressure in the auxiliary buffer rod 4 during pedal reset, and further adjust the pedal reset damping buffer effect, further enhancing the feedback feeling of the pedal and improving the user driving experience, and eliminating the safety hazards existing in the traditional pedal device.

[0040] In an alternative embodiment, the auxiliary buffer rod 4 includes a piston rod 41, an oil cylinder 42, an oil return housing 43 and an oil return piston 44. One end of the piston rod 41 is hinged to the second connecting portion 22 on the pedal bracket 1, the other end of the piston rod 41 extends into one end of the oil cylinder 42, the other end of the oil cylinder 42 is connected to the oil return housing 43, the oil return housing 43 is hinged to the other end of the base 2, the inner cavity of the oil return housing 43 is separated into an adjustment chamber 431 and a compression chamber 432 by the oil return piston 44, the other end of the oil cylinder 42 is communicated with the adjustment chamber 431, and the oil return flux control switch 51 extends into the adjustment chamber 431.

[0041] As can be seen from the above description, when the pedal is depressed, the piston rod 41 extends into the oil cylinder 42 to compress the oil. The oil pushes the oil return piston 44 to move after passing through the adjustment chamber 431 of the oil return housing 43 to compress the medium in the compression chamber 432. By controlling the oil return flux of the adjustment chamber 431 through the oil return flux control switch 51, the reaction force generated by the oil pressure can be adjusted, so as to adjust the pedal reset buffer damping force.

[0042] In an alternative embodiment, the auxiliary buffer rod 4 further includes a first spring 45. One end of the first spring 45 abuts against the inner wall of the oil cylinder 42, and the other end of the first spring 45 abuts against the other end of the piston rod 41.

[0043] As can be seen from the above description, the first spring 45 plays a role of auxiliary support during stepping and provides a restoring force when the pedal is released, so as to achieve the purpose of overall improving the pedal stepping and resetting effects.

[0044] In an alternative embodiment, the buffer force adjustment knob 5 further includes a knob body 52. An adjustment hole 433 communicating with the adjustment chamber 431 is provided on the side wall of the oil return housing 43. The knob body 52 is in threaded engagement with the adjustment hole 433. The knob body 52 is rotatably connected to the oil return flux control switch 51, and the oil return flux control switch 51 is provided with two or more oil return through holes 511 having different pore diameters.

[0045] As can be seen from the above description, the knob body 52 covers the outside of the oil return flux control switch 51. An oil guiding hole 521 is provided on the side wall of the knob body 52. By rotating the oil return flux control switch 51 within the knob body 52 to make different oil return through holes 511 correspond to the oil guiding hole 521, the amount of oil flowing out of the oil guiding hole 521 can be flexibly adjusted, thereby adjusting the pedal return buffer damping force.

[0046] In an alternative embodiment, the knob body 52 is provided with a mounting hole 521. An oil guiding groove 522 is provided on the side wall of the knob body 52, and an oil guiding hole 521 communicating with the mounting hole 521 is provided in the oil guiding groove 522. The oil return flux control switch 51 is rotatably arranged in the mounting hole 521. When the auxiliary buffer rod 4 is compressed, the oil in the auxiliary buffer rod 4 sequentially flows through the oil return through hole 511, the oil guiding hole 521, and the oil guiding groove 522.

[0047] As can be seen from the above description, the mounting hole 521 is used to mount the oil return flux control switch 51. When the auxiliary buffer rod 4 is compressed, the oil in the auxiliary buffer rod 4 sequentially flows through the oil return through hole 511, the oil guiding hole 521, and the oil guiding groove 522 and then presses the oil return piston 44. The oil return piston 44 compresses the medium in the compression chamber 432; when the auxiliary buffer rod 4 expands, the medium in the compression chamber 432 pushes the oil return piston 44 to move, and the oil sequentially passes through the oil guiding groove 522, the oil guiding hole 521, and the oil return through hole 511 and then returns to the oil return piston 44, and the buffer during pedal return is realized through the above process.

[0048] In an alternative embodiment, a buffer force level marking portion is provided on the knob body 52.

[0049] As can be seen from the above description, the buffer damping force level marking portion is used for the user to clearly know the current buffer damping force level, so as to adjust more efficiently and accurately and improve the product adjustment ability.

[0050] In an alternative embodiment, the pedal bracket 1 is provided with more than two first assembly holes 211 at the first connection portion 21. One end of the elastic support member 3 is hinged to the first assembly hole 211. The pedal bracket 1 is provided with more than two second assembly holes 221 at the second connection portion 22. One end of the auxiliary buffer rod 4 is hinged to the second assembly hole 221. The other end of the base 2 is provided with more than two third assembly holes 23. The other end of the elastic support member 3 and the other end of the auxiliary buffer rod 4 are respectively hinged to the corresponding third assembly holes 23.

[0051] As can be seen from the above description, by adjusting the installation positions of the elastic support member 3 and the auxiliary buffer rod 4 on the pedal bracket 1, the pedal feel and the reset buffer damping force of the pedal can be adjusted simultaneously, thereby improving the user experience and enhancing the product quality.

[0052] In an alternative embodiment, the elastic support member 3 includes a support rod 31, a slider 32, and a second spring 33. One end of the support rod 31 is hinged to the first connection portion 21 on the pedal bracket 1. The other end of the support rod 31 is hinged to the slider 32. The slider 32 is slidably connected to the base 2. Both ends of the second spring 33 are connected to the slider 32 and the base 2 respectively.

[0053] As can be seen from the above description, when the pedal is depressed, the support rod 31 rotates with the pedal bracket 1 and drives the slider 32 to slide on the base 2. After the pedal is released, the pedal bracket 1 is reset under the action of the slider 32 and the second spring 33.

[0054] In an alternative embodiment, the distance from the first connection portion 21 to one end of the pedal bracket 1 is less than the distance from the second connection portion 22 to one end of the pedal bracket 1.

[0055] As can be seen from the above description, when the distance from one connection portion to one end of the pedal bracket 1 is less than the distance from the second connection portion 22 to one end of the pedal bracket 1, the pedal feel when the pedal is depressed and the feedback feel when the pedal is reset are the best.

[0056] In an alternative embodiment, it further includes a pedal body, and the pedal body is connected to the other end of the pedal bracket 1.

[0057] As can be seen from the above description, the pedal body is used for the user to step on. The pedal body can be connected to the pedal bracket 1 in a hinged manner to meet the stepping requirements at more angles and improve the pedal feel.

[0058] Please refer to Figures 1 to 8 , Embodiment 1 of the present invention is: a pedal structure with adjustable buffer force, including a pedal bracket 1, a base 2, an elastic support member 3, an auxiliary buffer rod 4, and a buffer force adjustment knob 5;

[0059] One end of the pedal bracket 1 is hinged to one end of the base 2;

[0060] One end of the elastic support member 3 is hinged to the first connection portion 21 on the pedal bracket 1, and the other end of the elastic support member 3 is hinged to the other end of the base 2;

[0061] One end of the auxiliary buffer rod 4 is hinged to the second connection portion 22 on the pedal bracket 1, and the other end of the auxiliary buffer rod 4 is hinged to the other end of the base 2;

[0062] The distance between the first connection portion 21 and the second connection portion 22 is adjustable;

[0063] The buffer force adjustment knob 5 is arranged on the auxiliary buffer rod 4, and the buffer force adjustment knob 5 includes an oil return flux control switch 51 extending into the auxiliary buffer rod 4.

[0064] The auxiliary buffer rod 4 includes a piston rod 41, an oil cylinder 42, an oil return housing 43 and an oil return piston 44. One end of the piston rod 41 is hinged to the second connection portion 22 on the pedal bracket 1, and the other end of the piston rod 41 extends into one end of the oil cylinder 42. The other end of the oil cylinder 42 is connected to the oil return housing 43, and the oil return housing 43 is hinged to the other end of the base 2. The inner cavity of the oil return housing 43 is separated into an adjustment chamber 431 and a compression chamber 432 by the oil return piston 44. The other end of the oil cylinder 42 is communicated with the adjustment chamber 431, and the oil return flux control switch 51 extends into the adjustment chamber 431. The auxiliary buffer rod 4 further includes a first spring 45. One end of the first spring 45 abuts against the inner wall of the oil cylinder 42, and the other end of the first spring 45 abuts against the other end of the piston rod 41.

[0065] The buffer force adjustment knob 5 further includes a knob body 52. The side wall of the oil return housing 43 is provided with an adjustment hole 433 penetrating through to the adjustment chamber 431. The knob body 52 is in threaded cooperation with the adjustment hole 433. The knob body 52 is rotatably connected to the oil return flux control switch 51. The oil return flux control switch 51 is provided with two or more oil return through holes 511 with different pore diameters. The knob body 52 is provided with a mounting hole 521. The side wall of the knob body 52 is provided with an oil guiding groove 522. An oil guiding hole 521 penetrating through to the mounting hole 521 is arranged in the oil guiding groove 522. The oil return flux control switch 51 is rotatably arranged in the mounting hole 521. When the auxiliary buffer rod 4 is compressed, the oil in the auxiliary buffer rod 4 sequentially flows through the oil return through holes 511, the oil guiding hole 521 and the oil guiding groove 522. A buffer force level marking portion is arranged on the knob body 52.

[0066] The pedal bracket 1 is provided with more than two first assembly holes 211 at the first connection part 21. One end of the elastic support member 3 is hinged to the first assembly hole 211. The pedal bracket 1 is provided with more than two second assembly holes 221 at the second connection part 22. One end of the auxiliary buffer rod 4 is hinged to the second assembly hole 221. The other end of the base 2 is provided with more than two third assembly holes 23. The other end of the elastic support member 3 and the other end of the auxiliary buffer rod 4 are respectively hinged to the corresponding third assembly holes 23.

[0067] The elastic support member 3 includes a support rod 31, a slider 32 and a second spring 33. One end of the support rod 31 is hinged to the first connection part 21 on the pedal bracket 1. The other end of the support rod 31 is hinged to the slider 32. The slider 32 is slidably connected to the base 2. Both ends of the second spring 33 are connected to the slider 32 and the base 2 respectively.

[0068] The distance from the first connection part 21 to one end of the pedal bracket 1 is less than the distance from the second connection part 22 to one end of the pedal bracket 1.

[0069] It further includes a pedal body, and the pedal body is connected to the other end of the pedal bracket 1.

[0070] Please refer to Figures 1 to 8 , the difference between the second embodiment and the first embodiment of the present invention is that more than two groups of oil return through holes 511 with different pore diameters are arranged at intervals along the circumferential direction on the oil return flux control switch 51, and the pore diameters increase or decrease along the circumferential direction.

[0071] Please refer to Figures 1 to 8 , the difference between the third embodiment and the first embodiment of the present invention is that the knob body 52 includes a knob block and a knob column. The oil guide hole 521 and the oil guide groove 522 are both arranged on the knob column. One end of the knob column is in threaded cooperation with the adjustment hole 433. The other end of the knob column extends out of the adjustment screw hole and is locked with the knob block.

[0072] Please refer to Figures 1 to 8 , the difference between the fourth embodiment and the first embodiment of the present invention is that a sealing ring is provided between the knob body 52 and the adjustment hole 433.

[0073] Please refer to Figures 1 to 8 , the difference between the fifth embodiment and the first embodiment of the present invention is that an annular limiting groove is provided on the inner wall of the adjustment hole 433, and a limiting post that is snap-fitted with the annular limiting groove is provided on the outer wall of the knob body 52.

[0074] Please refer to Figures 1 to 8, the difference between the sixth embodiment and the first embodiment of the present invention is that: the other end of the oil cylinder 42 is threadedly connected to the oil return housing 43.

[0075] The working principle of the present invention is as follows: Before use, rotate the oil return flux control switch 51 within the knob body 52 according to the damping force level identification portion, so that different oil return through holes 511 correspond to the oil guiding holes 521, and the amount of oil flowing out of the oil guiding hole 521 can be flexibly adjusted, thereby adjusting the pedal return buffer damping force; when the pedal is depressed, the support rod 31 flips with the pedal bracket 1 and drives the slider 32 to slide on the base 2. At this time, the second spring 33 is compressed, and the piston rod 41 extends into the oil cylinder 42 to compress the oil. The oil pushes the oil return piston 44 to move after passing through the adjustment chamber 431 of the oil return housing 43 to compress the medium in the compression chamber 432; when the pedal is released and reset, the pedal bracket 1 is reset under the action of the second spring 33 and the oil pressure.

[0076] In summary, the present invention provides a pedal structure with adjustable buffer force. After the pedal is depressed, the pedal bracket flips on the base, and the reset force of the pedal bracket is provided by the elastic support member. During the reset process of the pedal bracket, the buffer action of the auxiliary buffer rod avoids immediate flipping and bouncing, so it can reduce the vibration received by the user, reduce the fatigue of the user, and is beneficial to improving the driving experience of the user; the distance between the first connecting portion and the second connecting portion is designed to be adjustable, which is convenient for adjusting the positions of the auxiliary buffer rod and the elastic support member between the base and the pedal bracket, so as to more flexibly control the pedal feel and the return buffer damping force, thereby improving the user experience and enhancing the product quality; the flux of the oil return oil path of the auxiliary buffer rod is adjusted by using the buffer force adjustment knob, so as to adjust the reaction force generated by the oil pressure in the auxiliary buffer rod when the pedal is reset, and further adjust the pedal reset damping buffer effect, further enhancing the feedback feeling of the pedal and improving the user driving experience, and eliminating the safety hazards existing in the traditional pedal device.

[0077] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A buffer force adjustable pedal structure, characterized in that, It includes a pedal bracket, a base, an elastic support member, an auxiliary buffer rod, and a buffer force adjustment knob; One end of the pedal bracket is hinged to one end of the base; One end of the elastic support member is hinged to the first connection portion on the pedal bracket, and the other end of the elastic support member is hinged to the other end of the base; One end of the auxiliary buffer rod is hinged to the second connection portion on the pedal bracket, and the other end of the auxiliary buffer rod is hinged to the other end of the base; The distance between the first connection portion and the second connection portion is adjustable; The buffer force adjustment knob is arranged on the auxiliary buffer rod, and the buffer force adjustment knob includes an oil return flux control switch extending into the auxiliary buffer rod; The auxiliary buffer rod includes a piston rod, an oil cylinder, an oil return housing, and an oil return piston. One end of the piston rod is hinged to the second connection portion on the pedal bracket, the other end of the piston rod extends into the oil cylinder from one end of the oil cylinder, the other end of the oil cylinder is connected to the oil return housing, the oil return housing is hinged to the other end of the base, the inner cavity of the oil return housing is separated into an adjustment chamber and a compression chamber by the oil return piston, the other end of the oil cylinder is communicated with the adjustment chamber, and the oil return flux control switch extends into the adjustment chamber; The buffer force adjustment knob further includes a knob body. The side wall of the oil return housing is provided with an adjustment hole penetrating through to the adjustment chamber. The knob body is in threaded cooperation with the adjustment hole. The knob body is rotatably connected to the oil return flux control switch. The oil return flux control switch is provided with more than two oil return through holes with different pore diameters.

2. The buffer force adjustable pedal structure according to claim 1, characterized in that, The auxiliary buffer rod further includes a first spring. One end of the first spring abuts against the inner wall of the oil cylinder, and the other end of the first spring abuts against the other end of the piston rod.

3. The buffer force adjustable pedal structure according to claim 1, characterized in that, The knob body is provided with a mounting hole. The side wall of the knob body is provided with an oil guide groove. An oil guide hole penetrating through to the mounting hole is arranged in the oil guide groove. The oil return flux control switch is rotatably arranged in the mounting hole. When the auxiliary buffer rod is compressed, the oil in the auxiliary buffer rod sequentially flows through the oil return through hole, the oil guide hole, and the oil guide groove.

4. The buffer force adjustable pedal structure according to claim 1, characterized in that, A buffer force level marking portion is arranged on the knob body.

5. The buffer force adjustable pedal structure according to claim 1, characterized in that, The pedal bracket is provided with more than two first assembly holes at the first connection portion. One end of the elastic support member is hinged to the first assembly hole. The pedal bracket is provided with more than two second assembly holes at the second connection portion. One end of the auxiliary buffer rod is hinged to the second assembly hole. The other end of the base is provided with more than two third assembly holes. The other ends of the elastic support member and the auxiliary buffer rod are respectively hinged to the corresponding third assembly holes.

6. The buffer force adjustable pedal structure according to claim 1, characterized in that, The elastic support member includes a support rod, a slider, and a second spring. One end of the support rod is hinged to the first connection portion on the pedal bracket, the other end of the support rod is hinged to the slider, the slider is slidably connected to the base, and the two ends of the second spring are respectively connected to the slider and the base.

7. The buffer force adjustable pedal structure according to claim 1, characterized in that, The distance from the first connection portion to one end of the pedal bracket is less than the distance from the second connection portion to one end of the pedal bracket.

8. The buffer force adjustable pedal structure according to claim 1, characterized in that, It further includes a pedal body, and the pedal body is connected to the other end of the pedal bracket.

Images