CN111114314A

CN111114314A - Electronic accelerator pedal

Info

Publication number: CN111114314A
Application number: CN201911383513.4A
Authority: CN
Inventors: 李冠霖; 韦安阳; 朱宏志
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-05-08

Abstract

The invention belongs to the technical field of automobile brake pedals, and discloses an electronic accelerator pedal which comprises: the pedal mechanism comprises a shell, a pedal arm, a rotating shaft, an elastic piece and a damping mechanism, wherein an accommodating cavity is arranged in the shell, and a pair of first inner walls gradually narrowing along the X-axis direction are arranged in the accommodating cavity; the first end of the pedal arm is provided with a pedal surface, and the second end of the pedal arm is arranged in the accommodating cavity in a sliding manner; the rotating shaft is arranged on the shell; the elastic piece is arranged in the accommodating cavity, two ends of the elastic piece are respectively abutted against the second end and a second inner wall of the accommodating cavity, and the second inner wall and the second end are opposite to each other along the X-axis direction; damping mechanism sets up at the second end of pedal arm and the first inner wall of elasticity butt, wherein: during movement of the pedal arm from the initial position to the full braking position, the damping mechanism moves from one end of the receiving chamber at a wide interval of the first inner wall to one end of the receiving chamber at a narrow interval of the first inner wall. Has the advantages that: the resistance of the pedal arm of the electronic accelerator pedal gradually increases with the increase of the pedal stroke.

Description

Electronic accelerator pedal

Technical Field

The invention relates to the technical field of automobile brake pedals, in particular to an electronic accelerator pedal.

Background

At present commercial car generally adopts electronic accelerator pedal, guarantees that the footboard power change is steady at accelerator pedal during operation, can not increase suddenly or reduce, can effectively guarantee to drive ride comfort and driver's comfort when foot steps on the footboard.

Ideally, the resistance of the accelerator pedal should be gradually increased along with the increase of the pedal stroke, and the pedal can be effectively prevented from being stuck by dust and impurities.

Disclosure of Invention

The invention aims to provide an electronic accelerator pedal, which aims to solve the problem that the resistance of the existing accelerator pedal cannot be gradually increased along with the increase of the pedal stroke.

In order to achieve the purpose, the invention adopts the following technical scheme:

an electronic accelerator pedal comprising:

the device comprises a shell, wherein an accommodating cavity is arranged in the shell, the accommodating cavity is provided with a pair of first inner walls extending along the X-axis direction, and the distance between the two first inner walls is gradually narrowed along the X-axis direction;

the first end of the pedal arm is provided with a pedal surface, and the second end of the pedal arm is slidably arranged in the accommodating cavity;

a rotation shaft disposed on the housing, the rotation shaft being disposed between the first end and the second end of the pedal arm;

the elastic piece is arranged in the accommodating cavity, two ends of the elastic piece are respectively abutted against the second end and a second inner wall of the accommodating cavity, and the second inner wall and the second end are opposite to each other along the X-axis direction;

a damping mechanism disposed at the second end and resiliently abutting the first inner wall, wherein:

during movement of the pedal arm from an initial position to a full braking position, the damping mechanism moves in the receiving cavity from one end of the first inner wall at a wide spacing to one end of the first inner wall at a narrow spacing.

When the pedal arm moves from the initial position to the full braking position, the elastic piece is compressed, the elastic piece exerts elastic force for preventing the pedal arm from moving at the moment, meanwhile, the damping mechanism moves in the gradually narrowed accommodating cavity to generate gradually increased damping force, and the resistance of the pedal arm of the electronic accelerator pedal is gradually increased along with the increase of the pedal stroke.

As a preferable scheme of the above electronic accelerator pedal, the damping mechanism includes a damping spring and a damping slider, one end of the damping slider abuts against the first inner wall, the other end of the damping slider is connected to the damping spring, and the damping spring applies an elastic force to the damping slider, the elastic force moving in a direction of the first inner wall.

One end of the damping slide block is always abutted to the first inner wall under the action of the damping spring.

As a preferable scheme of the above electronic accelerator pedal, an abutting table surface is arranged in the middle of the damping slider, the damping spring is sleeved on the damping slider and abuts against the abutting table surface, and the top end of the damping slider is a truncated sphere.

Damping spring cover is established and the butt can follow damping slider's length direction motion all the time and can not break away from damping slider on damping slider, designs into truncated spheroid with damping slider's the other end, can enough guarantee damping slider's intensity, also can with form the face contact between the first inner wall, improve the leakproofness.

As a preferable mode of the above-mentioned electronic accelerator pedal, a truncated surface of the truncated sphere is a circular plane having a radius of not more than 1 mm.

The truncated surface of the damping slide block is designed into a circle with the radius not larger than 1mm, and the sealing performance is further improved.

As a preferable scheme of the above electronic accelerator pedal, the damping slider is made of polyoxymethylene. The damping sliding block is made of polyformaldehyde materials and has good wear resistance and ageing resistance.

As a preferable mode of the above-mentioned electronic accelerator pedal, the second end of the pedal arm is provided with two oppositely facing grooves, and one damping mechanism is provided in each of the grooves. The damping mechanism is confined within the recess.

As a preferable scheme of the above electronic accelerator pedal, a second end of the pedal arm is provided with a protruding portion extending along the X-axis direction, and one end of the elastic member is fitted over the protruding portion.

As a preferable mode of the above electronic accelerator pedal, the elastic member includes an inner spring and an outer spring, and the outer spring is connected to the inner spring.

As a preferable scheme of the above electronic accelerator pedal, an included angle between planes of the two first inner walls ranges from 6 ° to 8 °, and a variation range of a distance between the two first inner walls extending along the X-axis direction ranges from 2mm to 3 mm.

As a preferable mode of the above electronic accelerator pedal, the electronic accelerator pedal further includes an electronic box connected to the pedal arm and configured to generate a voltage signal to be transmitted to an electronic control unit.

The invention has the beneficial effects that: when the pedal arm moves from the initial position to the full braking position, the elastic piece is compressed, the elastic piece exerts elastic force for preventing the pedal arm from moving at the moment, meanwhile, the damping mechanism moves in the gradually narrowed accommodating cavity to generate gradually increased damping force, and the resistance of the pedal arm of the electronic accelerator pedal is gradually increased along with the increase of the pedal stroke.

Drawings

FIG. 1 is a schematic diagram of an electronic accelerator pedal according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a perspective of a housing of an electronic accelerator pedal according to an embodiment of the invention;

FIG. 4 is a schematic structural diagram of a damping slider of an electronic accelerator pedal according to an embodiment of the invention;

FIG. 5 is a schematic view of a pedal arm of an electronic accelerator pedal according to an embodiment of the invention from one perspective;

fig. 6 is a schematic view of another angle of view of a pedal arm of an electronic accelerator pedal according to an embodiment of the present invention.

In the figure:

1-a shell; 2-a pedal arm; 3-a rotating shaft; 4-an elastic member; 5-a damping mechanism; 6-an electronic box;

11-a containment chamber; 11A-a first inner wall; 11B-a second inner wall; 20-grooves; 21-tread surface; 22-a projection; 41-inner spring; 42-an outer spring; 51-a damping spring; 52-damping slide block; 520-an abutment mesa; 521-a truncated sphere; 521A-section plane.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The invention provides an electronic accelerator pedal, which is shown in figure 1 and comprises a shell 1, a pedal arm 2, a rotating shaft 3 and an electronic box 6, wherein the rotating shaft 3 is arranged on the shell 1, the pedal arm 2 is rotatably connected to the rotating shaft 3, a pedal surface 21 is arranged at the first end (the bottom end of the pedal arm 2) of the pedal arm 2, when a user treads on the pedal surface 21, the pedal arm 2 rotates relative to the rotating shaft 3, and the electronic box 6 is connected with the pedal arm 2 and generates a voltage signal to be output to an Electronic Control Unit (ECU).

As shown in fig. 2 and 3, the housing 1 is provided with a receiving chamber 11, and the second end of the pedal arm 2 (the top end of the pedal arm 2) is slidably disposed in the receiving chamber 11, that is, the second end of the pedal arm 2 slides in the receiving chamber 11 when the pedal arm 2 rotates about the rotation shaft 3. In the present embodiment, the accommodation chamber 11 is located at the top of the housing 1, and the accommodation chamber 11 has a pair of first inner walls 11A, i.e., the second end of the pedal arm 2 is sandwiched between the two first inner walls 11A, and the pitch of the first inner walls 11A uniformly decreases in the X-axis direction (from the left end to the right end in fig. 2).

The accommodating chamber 11 also has a second inner wall 11B sandwiched between the first inner walls 11A, the second inner wall 11B being disposed at the end of the narrow interval of the first inner walls 11A of the accommodating chamber 11.

When the pedal arm 2 is located at the initial position, the second end of the pedal arm 2 is located at a side of the accommodating cavity 11 far away from the second inner wall 11B, and after the pedal surface 21 is stepped on, the second end of the pedal arm 2 moves towards the second inner wall 11B.

The electronic accelerator pedal further comprises an elastic part 4 and a damping mechanism 5, wherein the elastic part 4 is arranged in the accommodating cavity 11, and two ends of the elastic part 4 are respectively abutted against the second side wall 11B and the second end of the pedal arm 2; the damper mechanism 5 is partially disposed inside the second end of the pedal arm 2 and projects outward so as to elastically abut against the first inner wall 11A.

When force is applied to the pedal surface 21 of the pedal arm 2, the distance between the elastic member 4 and the second inner wall 11B is reduced and further gradually compressed, the distance between the first inner wall 11A is gradually reduced, so that the damping mechanism 5 is gradually compressed, and under the combined action of the two, the resistance force applied to the pedal arm 2 of the electronic accelerator pedal is gradually increased along with the increase of the pedal stroke.

In the embodiment, the included angle of the planes of the two first inner walls 11A ranges from 6 ° to 8 °, and the variation range of the distance between the two first inner walls 11A extending along the X-axis direction ranges from 2mm to 3 mm.

The elastic member 4 includes an inner spring 41 and an outer spring 42, and the outer spring 42 is connected to the inner spring 41.

With reference to fig. 2 and 5, the second end of the pedal arm 2 is provided with two oppositely facing recesses 20, one damping mechanism 5 being provided in each recess 20. The damping mechanism 5 is restrained in the groove 20 to prevent the damping mechanism 5 from being disengaged from the pedal arm 2 when the pedal arm 2 is rotated.

The damper mechanism 5 includes a damper spring 51 and a damper slider 52, one end of the damper slider 52 abuts against the first inner wall 11A, the other end of the damper slider 52 is connected to the damper spring 51, and the damper spring 51 applies an elastic force to the damper slider 52 to move in the direction of the first inner wall 11A.

As shown in fig. 4, the middle of the damping slider 52 is provided with an abutting table 520, and the damping spring 51 is sleeved on the damping slider 52 and abuts against the abutting table 520. The damping spring 51 is sleeved and abutted on the damping slider 52, so that the damping spring 51 can move along the length direction of the damping slider 52 at all times without being separated from the damping slider 52.

The top end of the damping slider 52 is a truncated sphere 521, which can ensure the strength of the damping slider 52 and form a surface contact between the damping slider 52 and the first inner wall 11A, thereby improving the sealing property.

In the present embodiment, the truncated surface 521A of the truncated sphere 521 is a circular plane having a radius of not more than 1 mm. The sealing property is further improved.

In the present embodiment, the material of the damping slider 52 is Polyoxymethylene (POM). The POM provides the damping slider 52 with good wear and aging resistance.

As shown in fig. 5 and 6, the second end of the pedal arm 2 is provided with a projection 22 extending in the X-axis direction, and one end of the elastic member 4 is fitted over the projection 22.

Preferably, in this embodiment, the second inner wall 11B is provided with a protrusion corresponding to the protruding portion 22, and the other end of the elastic member 4 is sleeved on the protrusion, so that both ends of the elastic member 4 are limited.

The working principle of the invention is as follows: when pedal arm 2 was located initial position, pedal arm 2's second end was located the one side that holds chamber 11 and keep away from second inner wall 11B, step on pedal face 21 after, pedal arm 2's second end was to second inner wall 11B motion, elastic component 4 and second inner wall 11B's distance reduces and then compress gradually afterwards, first inner wall 11A's interval reduces gradually simultaneously, damping mechanism 5 compresses gradually, both combined action, the resistance that this electronic accelerator pedal's pedal arm 2 received along with the increase of pedal stroke can increase gradually.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An electronic accelerator pedal, comprising:

the device comprises a shell (1), wherein an accommodating cavity (11) is formed in the shell (1), a pair of first inner walls (11A) extending along the X-axis direction are arranged in the accommodating cavity (11), and the distance between the two first inner walls (11A) is gradually narrowed along the X-axis direction;

the first end of the pedal arm (2) is provided with a pedal surface (21), and the second end of the pedal arm (2) is slidably arranged in the accommodating cavity (11);

a rotating shaft (3), wherein the rotating shaft (3) is arranged on the shell (1), and the rotating shaft (3) is arranged between the first end and the second end of the pedal arm (2) in a penetrating way;

the elastic piece (4) is arranged in the accommodating cavity (11), two ends of the elastic piece (4) are respectively abutted against the second end and a second inner wall (11B) of the accommodating cavity (11), and the second inner wall (11B) and the second end are opposite to each other along the X-axis direction;

a damping mechanism (5), said damping mechanism (5) disposed at said second end and resiliently abutting said first inner wall (11A), wherein:

during the movement of the pedal arm (2) from the initial position to the full braking position, the damping mechanism (5) moves in the accommodating cavity (11) from one end of the first inner wall (11A) with a wide distance to one end of the first inner wall (11A) with a narrow distance.

2. The electronic accelerator pedal according to claim 1, wherein the damping mechanism (5) includes a damping spring (51) and a damping slider (52), one end of the damping slider (52) abuts against the first inner wall (11A), the other end of the damping slider (52) is connected to the damping spring (51), and the damping spring (51) applies an elastic force to the damping slider (52) to move in a direction of the first inner wall (11A).

3. The electronic accelerator pedal according to claim 2, wherein an abutting table top (520) is arranged in the middle of the damping slide block (52), the damping spring (51) is sleeved on the damping slide block (52) and abuts against the abutting table top (520), and a truncated sphere (521) is arranged at the top end of the damping slide block (52).

4. The electronic accelerator pedal according to claim 3, characterized in that the cross-section (521A) of the truncated sphere (521) is a circular plane with a radius not greater than 1 mm.

5. The electronic accelerator pedal according to claim 4, characterized in that the material of the damping slider (52) is polyoxymethylene.

6. The electronic accelerator pedal according to any one of claims 2 to 5, characterized in that the second end of the pedal arm (2) is provided with two oppositely facing recesses (20), one damping mechanism (5) being provided in each recess (20).

7. The electronic accelerator pedal according to claim 6, wherein the second end of the pedal arm (2) is provided with a protrusion (22) extending in the X-axis direction, and one end of the elastic member (4) is fitted over the protrusion (22).

8. The electronic accelerator pedal according to claim 7, characterized in that the elastic member (4) comprises an inner spring (41) and an outer spring (42), the outer spring (42) being connected to the inner spring (41).

9. The electronic accelerator pedal according to claim 8, wherein the included angle of the planes of the two first inner walls (11A) ranges from 6 ° to 8 °, and the distance between the two first inner walls (11A) varies from 2mm to 3mm along the X-axis direction.

10. The electronic gas pedal according to claim 1, characterized in that it further comprises an electronic box (6), said electronic box (6) being connected to said pedal arm (2) and configured to generate a voltage signal to be transmitted to an electronic control unit.