CN212890287U

CN212890287U - Connecting structure of brake pedal return spring

Info

Publication number: CN212890287U
Application number: CN202021517385.6U
Authority: CN
Inventors: 梁强
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-04-06
Anticipated expiration: 2030-07-28

Abstract

The utility model relates to a connecting structure of a brake pedal return spring, which comprises a return spring, wherein one end of the return spring is detachably connected with a first mounting bracket fixedly connected on a brake pedal arm, and the other end of the return spring is detachably connected with a second mounting bracket fixedly connected on a pedal assembly bracket body; spring bushings are buckled in mounting bracket holes of the first mounting bracket and the second mounting bracket, and two ends of the return spring are connected with the two spring bushings respectively. The connecting structure can effectively reduce the noise generated between the end part of the return spring of the brake pedal and the mounting bracket hole due to friction.

Description

Connecting structure of brake pedal return spring

Technical Field

The utility model belongs to the technical field of automobile brake system, concretely relates to brake pedal return spring's connection structure.

Background

The brake pedal is an important component of a brake system control mechanism, and service braking is realized by stepping on the brake pedal and pushing the vacuum booster and the piston of the brake master cylinder by the brake pedal arm. The brake pedal return mode among the prior art mainly has two kinds, one kind is that brake pedal does not have return spring, mainly relies on the thrust of vacuum booster and brake master cylinder spring, and the pedal restores to initial position, and another kind is that brake pedal has return spring, but still relies on the thrust of vacuum booster and brake master cylinder spring, and the pedal returns to initial position. The brake pedal without the return spring has the advantages that when the pedal feel of the running pedal is adjusted on the whole vehicle, the vacuum booster and the brake main cylinder are complex in structure, so that the adjusting pedal feels more influence factors and is difficult to adjust; the brake pedal with the return spring can be realized by directly replacing the spring or adjusting the installation position of the return spring when the pedal feel of a driver during running is adjusted, but when the brake pedal with the return spring is stepped, the return spring and the installation point move relatively, abnormal sound easily occurs, and complaints of drivers are caused.

Disclosure of Invention

The utility model aims at providing a brake pedal return spring's connection structure, the technical problem of solution: friction can take place between the burr in brake pedal return spring tip and installing support hole, and then the noise that produces reduces the comfort of taking.

In order to solve the technical problem, the utility model provides a following technical scheme: a brake pedal return spring obtains the linkage, including the return spring, one end of the said return spring is connected with first mounting bracket that is connected fixedly on the brake pedal arm removably, another end is connected with second mounting bracket that is connected fixedly on the assembly support body of the footboard removably; spring bushings are buckled in mounting bracket holes of the first mounting bracket and the second mounting bracket, and two ends of the return spring are connected with the two spring bushings respectively. Because set up the spring bushing between return spring tip and installing support for brake pedal tramples in-process return spring tip can not contact with installing support (metal), avoids producing sharp-pointed abnormal sound, simultaneously because the spring bushing internal surface is smooth, avoids because of the great slip noise who produces of frictional resistance.

As a further improvement, the two ends of the return spring are both semicircular hook ring structures. The end part of the return spring is processed by a semicircular ring, so that the attachment area of the end part of the return spring and the spring bushing is increased, and the return spring and the mounting bracket are more reliably connected.

As right the utility model discloses a further improvement, the spring bushing pore wall with semicircular ring structure complex position is equipped with semicircular boss to increase semicircular ring structure and spring bushing's area of contact.

As a further improvement, the spring bushing is waist-shaped, and the mounting bracket hole is waist-shaped. The mounting bracket hole is designed to be a waist-shaped hole so as to facilitate the mounting of the end part of the return spring.

As a further improvement, the spring bushing outer peripheral face is provided with a clamping groove matched with the mounting bracket hole. The purpose of arranging the clamping groove on the outer peripheral surface of the spring bushing is two, one is that the spring bushing can be conveniently installed in the mounting support hole, and the other is that the spring bushing can be more firmly fixed in the mounting support hole.

As a further improvement, the spring bushing is provided with a fracture at a position opposite to the clamping groove. The purpose of setting up the breach is for making things convenient for spring bushing's installation, promotes assembly efficiency.

As right the utility model discloses a further improvement, spring bushing's aperture is d, return spring's line footpath is s, d is 1.2 ~ 1.3 times of s. Within this range, the spring bushing can provide the best noise reduction. If the aperture d of the spring bushing is far larger than the linear diameter s of the return spring, the return spring is easy to install, but the running posture of the return spring is unstable, and when the pedal is stepped on quickly, the vibration phenomenon is likely to occur, so that the noise reduction effect is reduced; if the aperture d of the spring bushing is far smaller than the linear diameter s of the return spring, the return spring is difficult to install, the resistance of the spring during operation is increased, and the noise reduction effect is also reduced.

As right the utility model discloses a further improvement, spring bushing's thickness is h, the value of h is 2.0 mm. This is designed to ensure the strength of the spring bushing.

By adopting the technical scheme, the utility model discloses the beneficial technological effect who reaches states as follows: spring bushing is add to this connection structure, effectively falls to make an uproar, promotes and takes the comfort, and spring bushing simple to operate among this connection structure is swift (has seted up the fracture because of spring bushing), has promoted production efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is one of the cross-sectional views of FIG. 1;

FIG. 3 is a schematic view of a brake pedal return spring connection;

FIG. 4 is a second cross-sectional view of FIG. 1;

FIG. 5 is a third cross-sectional view of FIG. 1;

in the figure: 1-a return spring; 2-spring bushing; 3-brake pedal arm; 4-a first mounting bracket; 5-a second mounting bracket; 6-pedal assembly bracket body; 7-a pedal; 21-card slot.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 to 5, a connecting structure of a brake pedal return spring comprises a return spring 1, wherein one end of the return spring 1 is detachably connected with a first mounting bracket 4 fixedly connected to a brake pedal arm 3, and the other end of the return spring is detachably connected with a second mounting bracket 5 fixedly connected to a pedal assembly bracket body 6; spring bushings 2 are buckled in the mounting bracket holes of the first mounting bracket 4 and the second mounting bracket 5, and two ends of the return spring 1 are connected with the two spring bushings 2 respectively.

In this embodiment, the two ends of the return spring 1 are semicircular hook ring structures.

In this embodiment, a semicircular boss is disposed at a position where the hole wall of the spring bushing 2 is matched with the semicircular ring structure.

In this embodiment, the spring bushing is kidney-shaped, and the mounting bracket hole is a kidney-shaped hole.

In this embodiment, the outer peripheral surface of the spring bushing 2 is provided with a locking groove 21 matched with the mounting bracket hole.

In the present embodiment, a fracture is formed in the spring bushing 2 at a position opposite to the notch.

In the present embodiment, the diameter of the spring bushing 2 is d, the diameter of the return spring 1 is s, and d is 1.2 to 1.3 times s.

In the present embodiment, the thickness of the spring bushing 2 is h, and the value of h is 2.0 mm.

In this embodiment, the first mounting bracket 4 is welded to the brake pedal arm 3, and the first mounting bracket 4 moves rotationally with the brake pedal arm 3; the second mounting bracket 5 is welded to the pedal assembly bracket body 6 and does not operate with the brake pedal arm 3. When the pedal 7 is stepped, the return spring 1 is subjected to external force to realize stretching, two end parts of the return spring 1 respectively move relative to the first mounting bracket 4 and the second mounting bracket 5, and the spring bushing 2 is buckled in the mounting bracket hole, so that the friction abnormal sound between the end part of the return spring 1 and the mounting bracket can be greatly reduced, and the riding comfort is improved; when the pedal 7 is released, the return spring 1 contracts and the spring bushing 2 can also absorb the vibration noise generated by the quick release of the brake pedal arm 3.

In this embodiment, the specific shape of the mounting bracket holes of the first mounting bracket 4 and the second mounting bracket 5 is not required to be made, and the mounting bracket holes can be designed according to actual conditions, but the mounting of the spring bushing 2 is always ensured to be convenient because a large direction is adhered, and the outer peripheral surface of the spring bushing 2 is completely attached to the mounting bracket; the specific position of the mounting bracket hole is designed according to the running path of the return spring 1, so that the return spring 1 does not generate abnormal sound caused by jumping in the trampling process of the brake pedal.

As a concrete implementation mode, an anti-falling structure can be designed on the semicircular structure of the return spring 1, and the concrete form is not limited and the return spring 1 is convenient to assemble.

As a concrete implementation mode, the material for making spring bushing 2 can realize the self-lubricating, and spring bushing 2's thickness is 1.5mm, guarantees the self-lubricating effect promptly, has guaranteed spring bushing 2's intensity again, can make spring bushing 2 more lasting play the effect of making an uproar.

After the basic structure of the brake pedal is assembled, the two spring bushings 2 are buckled in the mounting bracket holes, one end of the return spring 1 is fixed in the mounting bracket holes of the second mounting bracket 5, and the other end of the return spring 1 is installed in the mounting bracket holes of the first mounting bracket 4 by means of a small tool.

Claims

1. A connecting structure of a brake pedal return spring comprises a return spring (1), wherein one end of the return spring (1) is detachably connected with a first mounting bracket (4) fixedly connected to a brake pedal arm (3), and the other end of the return spring is detachably connected with a second mounting bracket (5) fixedly connected to a pedal assembly bracket body (6); the spring mounting structure is characterized in that spring bushings (2) are buckled in mounting bracket holes of the first mounting bracket (4) and the second mounting bracket (5), and two ends of the return spring (1) are connected with the two spring bushings (2) respectively.

2. The brake pedal return spring attachment structure according to claim 1, wherein the return spring (1) is of a semicircular hook ring structure at both ends, and is hooked in the spring bushing (2).

3. The connecting structure of the brake pedal return spring according to claim 2, wherein the hole wall of the spring bushing (2) is provided with a semicircular boss at a position where the semicircular hook ring structure is engaged with the hole wall.

4. The brake pedal return spring attachment structure of claim 1, wherein the spring bushing is kidney-shaped, and the mounting bracket hole is a kidney-shaped hole.

5. The connecting structure of the brake pedal return spring according to claim 1, wherein a clamping groove (21) matched with the mounting bracket hole is formed in the outer peripheral surface of the spring bushing (2).

6. The connection structure of a brake pedal return spring according to claim 5, characterized in that a break is provided in the axial direction of the spring bushing (2).

7. The connection structure of a brake pedal return spring according to claim 1, wherein the bore diameter of the spring bushing (2) is d, the linear diameter of the return spring (1) is s, and d is 1.2 to 1.3 times s.

8. The connection structure of a brake pedal return spring according to claim 1, characterized in that the thickness of the spring bushing (2) is h, and the value of h is 2.0 mm.