Floor type electronic accelerator pedal with damping effect

Abstract

A floor type electronic accelerator pedal with a damping effect comprises a pedal body, a base, a connecting rod and a rocker arm support, and the pedal body is provided with a hinge end A and a hinge end B; the connecting rod is provided with two hinged ends B'and C '; the rocker arm bracket is provided with a C hinged end and a D hinged end; the base is provided with a hinge end A'and a hinge end D '; the pedal, the base, the connecting rod and the rocker arm support are hinged in pairs through hinge ends A and A ', B and B, C and C' and D and D 'to form a four-connecting-rod mechanism. By means of the structure, treading force applied to the pedal by the foot of a driver can be converted into friction force between the friction block and the base shaft, namely, the mechanical damping effect is generated, the pedal can be kept at the original position even in a bumpy state, the angle of an accelerator cannot be changed, and the driving process becomes more stable. The damping mechanism is detachably installed in the inner cavity of the base, the overall size of the pedal is not increased, and maintenance and installation are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, in particular to a floor-type electronic accelerator pedal with a damping effect. Background Art

[0002] With the rapid development of the automobile industry, the people-oriented development concept has penetrated into every automobile company, and improving the comfort and safety of drivers has become more and more important. The position of the accelerator pedal during driving is controlled by the human foot. When encountering bumpy roads, it is difficult to keep the pedal position stable, which directly affects the stability of the pedal output electrical signal, causing great inconvenience to driving the car, and at the same time increases the driver's driving fatigue and affects the comfort of the ride.

[0003] As the human-machine interface for vehicle acceleration and deceleration, if the electronic accelerator pedal can have a damping force generating mechanism and maintain a stable damping effect during driving, it will be beneficial for the driver to control the pedal position, improve driving comfort, and reduce the fatigue of the driver's feet, which indirectly improves driving safety and reduces the occurrence of traffic accidents. To address the above problems, we provide a floor-mounted electronic accelerator pedal with a damping effect. Summary of the invention

[0004] The object of the present invention is to overcome the above-mentioned existing deficiencies and provide a floor-type electronic accelerator pedal with a damping effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a floor-mounted electronic accelerator pedal with a damping effect, the main structure of which is a four-bar linkage, including a pedal, a base, a connecting rod, and a rocker arm bracket. The pedal has two hinged ends A and B; the connecting rod has two hinged ends B' and C'; the rocker arm bracket has two hinged ends C and D; the base has two hinged ends A' and D'; the four components of the pedal, base, connecting rod, and rocker arm bracket are hinged in pairs through the hinged ends A and A', B and B', C and C', and D and D' to form a four-bar linkage.

[0006] Preferably, a damping mechanism is provided between the rocker arm bracket and the base, and the damping mechanism comprises a rocker arm bracket, a spring seat, a friction block and a return spring; The middle part of the rocker arm bracket is provided with a hinge shaft E for hingedly supporting the spring seat; the middle part of the rocker arm bracket is provided with a hinge hole F near the hinge end D for hingedly supporting the friction block; The spring seat is a lever mechanism, with a hinge groove E' in the middle, which is used to be installed on the hinge shaft E and can rotate around the hinge shaft E. One end is provided with a spring installation groove, and the other end is a clamping end, which is used to contact and clamp the friction block; The friction block is a swing arm mechanism, having two ends, one end of which is provided with a hinge shaft F', fixed on the hinge hole F of the swing arm bracket, and can rotate around the hinge hole F, and the other end is provided with a friction surface, which is connected to the outer arc surface of the hinge end D' on the base by the compression of the spring seat to form a sliding friction pair; The return spring is arranged between the spring seat and the base, one end of the return spring is fixed in the spring installation groove of the spring seat, and the other end is fixed in the base.

[0007] Preferably, the friction block is made of PP modified wear-resistant material.

[0008] Preferably, the friction surfaces are all arc-shaped surfaces.

[0009] Preferably, a receiving cavity is provided in the middle of the rocker arm bracket, and the spring seat and the friction block are installed in the receiving cavity.

[0010] Preferably, it also includes an electronic box, wherein a shaft sleeve G is arranged inside the electronic box, a fixed boss is arranged at the hinge end D of the rocker arm bracket, a magnetic ring and a magnetic sheet are arranged inside the fixed boss, and the two side holes of the hinge end D respectively form a shaft sleeve connection with the base and the shaft sleeve G of the electronic box.

[0011] Preferably, the electronic box and the base are positioned by means of positioning columns and positioning ribs, and fixed by means of snap-fitting.

[0012] Preferably, the return spring is an internal and external left-hand and right-hand double-helical cylindrical spring.

[0013] Preferably, an inclined friction strip is provided on the front side of the pedal.

[0014] Beneficial effects of the present invention: 1: The electronic accelerator pedal of the present invention is provided with a damping mechanism between the rocker bracket and the base. The damping mechanism can convert the pedal force applied by the driver's foot to the pedal into the friction force between the friction block and the base shaft, that is, produce a mechanical damping effect, so that the pedal can remain in the original position even in a bumpy state, the throttle angle will not change, and the driving process will become smoother.

[0015] 2: The friction block of the present invention can automatically compensate for wear after long-term use, which has little effect on the damping effect and has no effect on the accuracy of the output signal.

[0016] 3. The damping mechanism of the present invention can be detachably installed in the inner cavity of the base, does not increase the overall volume of the pedal, and is easy to inspect and install. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2It is a longitudinal sectional view of the present invention.

[0019] Figure 3 It is a schematic diagram of the structural explosion decomposition of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the pedal in the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the connecting rod in the present invention.

[0022] Figure 6 It is a schematic diagram of the structure of the rocker arm bracket in the present invention.

[0023] Figure 7 It is a schematic diagram of the structure of the spring seat in the present invention.

[0024] Figure 8 It is a schematic diagram of the structure of the friction block in the present invention.

[0025] Figure 9 It is a schematic diagram of the structure of the electronic box in the present invention.

[0026] Figure 10 It is a schematic diagram of the structure of the base in the present invention.

[0027] Figure 11 It is a schematic diagram of the force analysis of the damping structure in the present invention.

[0028] In the figure: 1. Pedal 11. Friction strip 2. Base 3. Connecting rod 4. Rocker arm bracket 41. Hinge support shaft E 42. Hinge support hole F 43. Fixed boss 5. Spring seat 51. Hinge support groove E' 52. Spring installation groove 53. Pressing end 6. Friction block 61. Hinge support shaft F' 62. Friction surface 7. Return spring 8. Electronic box 81. Sleeve G 82. Positioning column 83. Positioning rib 84. Snap 9. Magnetic ring 10. Magnetic sheet. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-11, the present invention provides a technical solution: a floor-type electronic throttle pedal with a damping effect, the main structure of which is a four-bar linkage mechanism, including a pedal 1, a base 2, a connecting rod 3, and a rocker arm bracket 4. The pedal 1 has two hinge ends A and B; the connecting rod 3 has two hinge ends B' and C'; the rocker arm bracket 4 has two hinge ends C and D; the base 2 has two hinge ends A' and D'; the four components of the pedal 1, the base 2, the connecting rod 3, and the rocker arm bracket 4 are respectively hinged in pairs through the hinge ends A and A', B and B', C and C', D and D' to form a four-bar linkage mechanism.

[0031] The pedal 1, the base 2, the connecting rod 3, and the rocker arm bracket 4 adopt fittings with matching dimensions.

[0032] Specifically, a damping mechanism is provided between the rocker arm bracket 4 and the base 2. The damping mechanism includes a rocker arm bracket 4, a spring seat 5, a friction block 6, and a return spring 7; A hinge shaft E 41 for hinging the spring seat 5 is provided in the middle of the rocker arm bracket 4; a hinge hole F 42 for hinging the friction block 6 is provided near the hinge end D in the middle of the rocker arm bracket. The spring seat 5 is a lever mechanism, with a hinge slot E' 51 in the middle for installation on the hinge shaft E 41, and can rotate around the hinge shaft E 41. One end is provided with a spring installation slot 52, and the other end is a pressing end 53 for contacting and pressing the friction block 6. The friction block 6 is a swing arm mechanism, having two ends. One end is provided with a hinge shaft F' 61 and is fixed on the hinge hole F 42 of the rocker arm bracket and can rotate around the hinge hole F 42. The other end is provided with a friction surface 62, and is frictionally rotatably connected to the outer arc surface of the hinge end D' on the base 2 by the pressing of the spring seat 5 to form a sliding friction pair. The return spring 7 is provided between the spring seat 5 and the base 2. One end of it is fixed in the spring installation slot 52 of the spring seat 5, and the other end is fixed in the base 2.

[0033] Specifically, the friction block 6 is made of PP modified wear-resistant material, which can increase the friction force between the friction block and the base and enhance the damping effect.

[0034] Specifically, the friction surface 62 is an arc surface, which can increase the friction force and enhance the damping effect.

[0035] Specifically, a receiving cavity is provided in the middle of the rocker arm bracket 4, and the spring seat 5 and the friction block 6 are installed in the receiving cavity. The structure is compact, the occupied space is reduced, and the overall volume of the pedal is reduced.

[0036] Specifically, it further includes an electronic box 8. Inside the electronic box 8, there is a bushing G 81. At the hinged end D of the rocker arm bracket 4, there is a fixed boss 43. Inside the fixed boss 43, there are a magnetic ring 9 and a magnetic sheet 10. The two side holes at the hinged end D are respectively sleeved and connected with the base 2 and the bushing G 81 of the electronic box 8. The signal induction element is placed at the center of the bushing G 81 of the electronic box 8. When the rocker arm bracket 4 rotates, it drives the magnetic ring 9 and the magnetic sheet 10 to rotate around the axis of the electronic box 8, ensuring the coaxiality of the magnetic ring 9, the magnetic sheet 10 and the induction element.

[0037] Specifically, the electronic box 8 and the base 2 are positioned by positioning posts 82 and positioning ribs 83, and fixed by means of snap-fasteners 84. The connection is reliable and the structure is simple.

[0038] The electronic box 8 is provided with positioning posts 82, and the base 2 is provided with cylindrical slots of the same size for cooperation. The positioning ribs 83 play a role in support and auxiliary positioning. The snap-fasteners 84 and the slots on the base are of the same size and can be used in cooperation.

[0039] Specifically, the return spring 7 is a double-helix cylindrical spring with left and right hand spirals inside and outside. This prevents the springs from biting each other during operation, improving the service life of the return spring 7 and the reliability of the pedal 1 to return to its original position.

[0040] Specifically, the front surface of the pedal 1 is provided with inclined friction strips 11.

[0041] The specific structures and dimensions of each structure are given in the engineering drawings in the attached drawings.

[0042] Calculation of spring force: 1. Moment balance equation of the pedal with respect to point O F_pedal * L1 = F_link * L2 * sinα 2. Moment balance equation of the rocker arm bracket with respect to point O’ during the pedal depression process F_link * L3 * sinβ = F_spring * L4 * sinθ + F_friction * R 3. Moment balance equation of the rocker arm bracket with respect to point O’ during the pedal rebound process F_link * L3 * sinβ = F_spring * L4 * sinθ - F_friction * R 4. Moment balance equation of the spring seat with respect to point P F_spring * L5 = F_moy * L6 5. Frictional damping force of the friction block F_friction = μ * F_moy (μ is the friction coefficient) 1: The electronic accelerator pedal of the present invention is provided with a damping mechanism between the rocker bracket and the base. The damping mechanism can convert the pedal force applied by the driver's foot to the pedal into the friction force between the friction block and the base shaft, that is, produce a mechanical damping effect, so that the pedal can remain in the original position even in a bumpy state, the throttle angle will not change, and the driving process will become smoother.

[0043] 2: The friction block of the present invention can automatically compensate for wear after long-term use, which has little effect on the damping effect and has no effect on the accuracy of the output signal.

[0044] 3. The damping mechanism of the present invention can be detachably installed in the inner cavity of the base, does not increase the overall volume of the pedal, and is easy to inspect and install.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A floor-mounted electronic accelerator pedal with a damping effect, characterized in that: The main structure is a four-bar linkage mechanism, comprising a pedal (1), a base (2), a connecting rod (3), and a rocker arm bracket (4); The pedal (1) has two hinged ends, A and B; the connecting rod (3) has two hinged ends, B' and C'; the rocker arm bracket (4) has two hinged ends, C and D; the base (2) has two hinged ends, A' and D'; the pedal (1), base (2), connecting rod (3) and rocker arm bracket (4) are hinged in pairs through hinged ends A and A', B and B', C and C', and D and D' to form a four-bar linkage.

2. A floor-mounted electronic accelerator pedal with a damping effect according to claim 1, characterized in that: A damping mechanism is provided between the rocker arm bracket (4) and the base (2), the damping mechanism comprising the rocker arm bracket (4), a spring seat (5), a friction block (6) and a return spring (7); A hinge shaft E (41) for hingedly supporting the spring seat (5) is provided in the middle of the rocker arm bracket (4); a hinge hole F (42) is provided in the middle of the rocker arm bracket (4) near the hinge end D for hingedly supporting the friction block (6); The spring seat (5) is a lever mechanism, with a hinge groove E' (51) in the middle, which is used to be installed on the hinge shaft E (41) and can rotate around the hinge shaft E (41). One end is provided with a spring installation groove (52), and the other end is a pressing end (53) for contacting with the friction block (6) and pressing the friction block (6); The friction block (6) is a swing arm mechanism having two ends, one end of which is provided with a hinge shaft F' (61) fixed to a hinge hole F (42) of the swing arm bracket (4) and can rotate around the hinge hole F (42), and the other end of which is provided with a friction surface (62) which is frictionally rotatedly connected with the outer arc surface of the hinge end D' on the base (2) by being pressed by the spring seat (5) to form a sliding friction pair; The return spring (7) is arranged between the spring seat (5) and the base (2), with one end of the return spring being fixed in the spring mounting groove (52) of the spring seat (5) and the other end being fixed in the base (2).

3. A floor-mounted electronic accelerator pedal with damping effect according to claim 1, characterized in that: The friction block (6) is made of PP modified wear-resistant material.

4. A floor-mounted electronic accelerator pedal with a damping effect according to claim 2, characterized in that: The friction surface (62) is an arc-shaped surface.

5. A floor-mounted electronic accelerator pedal with a damping effect according to claim 2, characterized in that: A receiving cavity is provided in the middle of the rocker arm bracket (4), and the spring seat (5) and the friction block (6) are installed in the receiving cavity.

6. A floor-mounted electronic accelerator pedal with a damping effect according to claim 2, characterized in that: It also comprises an electronic box (8), wherein a shaft sleeve G (81) is arranged inside the electronic box (8), a fixed boss (43) is arranged at the hinge end D of the rocker arm bracket (4), a magnetic ring (9) and a magnetic sheet (10) are arranged inside the fixed boss (43), and two side holes of the hinge end D respectively form shaft sleeve connections with the base (2) and the shaft sleeve G (81) of the electronic box (8).

7. A floor-mounted electronic accelerator pedal with a damping effect according to claim 2, characterized in that: The electronic box (8) and the base (2) are positioned by using a positioning column (82) and a positioning rib (83), and are fixed by using a buckle (84) to fasten.

8. The floor-mounted electronic accelerator pedal with damping effect according to claim 2, characterized in that: The return spring (7) is a double helical cylindrical spring with left and right helical rotation inside and outside.

9. The floor-mounted electronic accelerator pedal with damping effect according to claim 1, characterized in that: An inclined friction strip (11) is provided on the front side of the pedal (1).

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