CN211280974U

CN211280974U - Installation buckle for brake pedal

Info

Publication number: CN211280974U
Application number: CN201921749534.9U
Authority: CN
Inventors: 朱璐
Original assignee: Zhejiang Leapmotor Technology Co Ltd
Current assignee: Zhejiang Zero Run Technology Co Ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-08-18
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses a brake pedal is with installation buckle, including buckle body and spacing boss, the bottom of the side of spacing boss is equipped with annular slope. The utility model provides a brake pedal is with installation buckle, simple structure, low in manufacturing cost can make the buckle remain throughout and hug closely with the push rod bulb in suitable position, great position change does not appear, also can reduce because the probability of push rod bulb and the big abnormal sound that causes in pedal arm ball socket clearance.

Description

Installation buckle for brake pedal

Technical Field

The utility model belongs to the technical field of the automobile manufacturing technique and specifically relates to a brake pedal is with installation buckle is related to.

Background

When the vehicle runs, a driver stops the moving vehicle through an operating mechanism in a cab, moves a master cylinder piston by stepping on a brake pedal and assisting power through the vacuum booster, generates hydraulic pressure, and transmits the pressure to four wheel brakes through brake pipelines to decelerate or even stop the vehicle. The current matching modes of the vacuum booster and the brake pedal are two types: a shift fork and a ball head. The shifting fork is mainly matched with a pedal arm formed by a single-layer steel plate and is fixed by a pin and a cotter pin. Firstly, the assembly mode is not simple enough, and secondly, the thickness of the steel plate required by the pedal arm formed by a single-layer steel plate is about 8mm generally, so that the weight of the brake pedal assembly is heavy. The stamping pedal arm commonly used at present and matched with the push rod of the ball head type vacuum booster is simple and quick in assembly process, the risk of neglected parts is avoided, the weight of the stamping-formed multilayer sheet metal part pedal arm can be reduced by about 20%, and the rigidity cannot be weakened. The push rod bulb can be designed into a collapsing scheme (the interior of the push rod bulb is hollow), and the damage of the push rod of the booster to a human body during vehicle collision can be reduced. Therefore, the design scheme that the ball-head type push rod is matched with the ball-socket type pedal arm is more.

In the bulb formula brake pedal of prior art, the buckle joint is at the pedal arm, restricts booster push rod bulb and can not drop from the pedal arm. The positioning is realized by means of 4 holes punched on the pedal arm and 4 bosses of the plastic buckle. However, this structure has the following problems: the position of the plastic buckle is completely determined by the position accuracy of 4 holes on the pedal arm, so the requirements on the position accuracy of the holes and the dimensional tolerance of the plastic buckle are strict, the large clearance can cause the large shaking amount of the push rod ball head in the ball socket, the idle stroke of the brake pedal is increased, the braking distance is lengthened, the driving safety is affected, and abnormal sound is generated when the pedal is released, so that customers complain. The excessively small gap can cause that the push rod ball head cannot be assembled into the plastic buckle or the braking force ratio is larger after the assembly, and the return of the brake pedal is influenced, so that the dragging resistance of the four wheel brakes is increased, and the vehicle endurance is influenced; the precision requirement on the pedal arm stamping tool and the die is high, the overhauling frequency of the die is increased, and more maintenance cost is caused. And the life of the mold is also reduced. Therefore, it is necessary to design a mounting clip for a brake pedal to solve the above problems.

Chinese patent application publication No. CN206914314U, the public day is 2018 year 05 month 25 day, named as "brake pedal assembly", discloses a brake pedal assembly, relates to the automobile braking system field, and it includes brake pedal support and pedal arm, wherein be provided with guide structure on the pedal support, be provided with latch device on the pedal arm, guide structure is located latch device's front portion is used for installing the booster push rod to when in the latch device, for the booster push rod provides the installation direction, thereby makes the pedal support with the quick accurate connection of pedal arm booster. The connection of the catch to the pedal arm in this patent still presents the problems described above.

Disclosure of Invention

The utility model discloses an it is too big to overcome the clearance between the spacing boss on the spacing hole of pedal arm and the buckle among the prior art, it is big to lead to the push rod bulb to rock the volume in the ball socket, make brake pedal idle stroke increase, lead to braking distance lengthening, influence driving safety's problem, an installation buckle is used to brake pedal is provided, moreover, the steam generator is simple in structure, low in manufacturing cost, can make the buckle remain throughout and hug closely with the push rod bulb in suitable position, great position change does not appear, also can reduce because the probability of the big abnormal sound that causes in push rod bulb and pedal arm ball socket clearance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a brake pedal is with installation buckle, includes buckle body and spacing boss, and the bottom of the side of spacing boss is equipped with annular slope.

Among the above-mentioned technical scheme, spacing boss is the cylinder structure, spacing hole adaptation and joint on spacing boss and the pedal arm, after buckle and pedal arm assembly are accomplished, annular slope and the circumference contact in spacing hole, because the existence of annular slope, make the buckle have the pretightning force that receives the spacing hole of pedal arm to annular slope backward extrusion, can compensate the too big interval of booster push rod bulb and braking pedal arm ball socket that causes because of locating hole size discrepancy on the pedal arm like this, can make the buckle remain throughout in suitable position and hug closely with the push rod bulb, great position change does not appear, thereby improve the installation accuracy. The probability of abnormal sound caused by large gap between the push rod ball head and the pedal arm ball socket can be reduced.

Preferably, the annular slope is less than or equal to half of a full circle. The structure can make the buckle body slide to the side that is not equipped with the annular slope after the installation, guarantees the unity of product mounted position and slip direction.

Preferably, the annular slope is arranged on one side of the opening of the buckle body. The structure can enable the buckle body to be aligned to the opening side of the buckle body in a translation mode.

Preferably, the number of the limiting bosses is multiple, the lower side section of each limiting boss is provided with an annular slope, and all the annular slopes face towards the same direction. The structure can make the stress and the translation direction of each limit boss on the buckle body consistent, and improve the accuracy of the integral installation of the buckle.

Preferably, the top of the limiting boss is provided with an installation inclined plane. The installation inclined plane can make things convenient for spacing boss card to go into spacing downthehole on the pedal arm.

Preferably, the mounting ramp faces opposite the annular ramp. The structure can make the structure compacter, guarantees structural strength simultaneously.

Preferably, the height of the lowest part of the installation inclined plane is higher than the height of the highest part of the annular slope. The structure can ensure that the side surface of the limiting boss without the annular slope can be directly attached to the side wall of the limiting hole after the limiting boss is installed, so that excessive deviation is avoided, and the installation precision is ensured. The height is the distance from each part to the outer surface of the buckle body.

Preferably, buckle body, spacing boss and annular slope are integrated into one piece structure. The overall strength of the mounting buckle can be increased.

Preferably, the height of the limiting boss is higher than the height of the highest position of the annular slope. The structure can facilitate the limiting lug boss to be clamped into the limiting hole on the pedal arm.

The utility model has the advantages that: (1) tolerance design of a positioning hole in the pedal arm and a limiting boss on the buckle can be released, a limit gap generated in a limit tolerance state is not considered, position fine adjustment of the buckle is realized by utilizing different height positions of an annular slope at the root part of the limiting boss of the installation buckle and the circumference of the positioning hole of the pedal arm in a contact mode, and installation precision is improved; (2) the precision requirements on pedal arm punch forming and punching dies are not high, and the use times and service life of the dies can be prolonged; (3) the probability of abnormal sound caused by a large gap between the push rod ball head and the pedal arm ball socket can be reduced; (4) the buckle structure is simple, and the cost is not required to be increased.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2.

In the figure: buckle body 1, opening 1.1, spacing boss 2, annular slope 3, installation inclined plane 4.

Detailed Description

The invention is further described with reference to the accompanying drawings and specific embodiments.

Example 1:

as shown in fig. 1, an installation buckle for a brake pedal comprises a

buckle body

1 and 4 limiting bosses 2, wherein an annular slope 3 is arranged at the lower section of the side surface of each limiting boss 2, and the buckle body 1, the limiting bosses 2 and the annular slopes 3 are of an integrally formed structure; as shown in fig. 2 and 3, the annular slope 3 is equal to a half of a complete ring, the annular slope 3 is arranged on one side of the opening 1.1 of the buckle body 1, and all the annular slopes 3 face the same direction; the top of the limiting boss 2 is provided with an installation inclined plane 4, and the installation inclined plane 4 faces to the opposite direction of the annular slope 3; the height of the lowest position of the installation inclined plane 4 is higher than that of the highest position of the annular slope 3; the height of the limiting boss 2 is higher than that of the highest position of the annular slope 3.

Among the above-mentioned technical scheme, spacing boss 2 and the spacing hole adaptation and the joint on the pedal arm, after buckle and pedal arm assembly are accomplished, annular slope 3 contacts with the circumference in spacing hole, because the existence of annular slope 3, make the buckle have the pretightning force that receives the spacing hole of pedal arm to 3 opposite direction extrusions in annular slope, can compensate like this because the locating hole size discrepancy and the too big interval of booster push rod bulb and braking pedal arm ball socket that arouses on the pedal arm, can make the buckle remain throughout and hug closely with the push rod bulb in suitable position, great position change does not appear, thereby improve the installation accuracy. The probability of abnormal sound caused by large gap between the push rod ball head and the pedal arm ball socket can be reduced.

The utility model has the advantages that: tolerance design of a positioning hole in the pedal arm and a limiting boss on the buckle can be released, a limit gap generated in a limit tolerance state is not considered, position fine adjustment of the buckle is realized by utilizing different height positions of an annular slope at the root part of the limiting boss of the installation buckle and the circumference of the positioning hole of the pedal arm in a contact mode, and installation precision is improved; the precision requirements on pedal arm punch forming and punching dies are not high, and the use times and service life of the dies can be prolonged; the probability of abnormal sound caused by a large gap between the push rod ball head and the pedal arm ball socket can be reduced; the buckle structure is simple, and the cost is not required to be increased.

Claims

1. The utility model provides a brake pedal is with installation buckle, includes buckle body and spacing boss, characterized by, and the bottom of the side of spacing boss is equipped with annular slope, and spacing boss is the cylinder structure, spacing boss and the spacing hole adaptation and the joint on the pedal arm, and after buckle and pedal arm assembly accomplished, annular slope and the circumference contact in spacing hole.

2. The brake pedal mounting clip of claim 1, wherein the annular ramp is less than or equal to one half of a full circle.

3. The brake pedal mounting clip of claim 2, wherein the annular ramp is provided on the side of the opening of the clip body.

4. The mounting clip for the brake pedal according to claim 2, wherein the number of the limiting bosses is plural, and the lower side section of each limiting boss is provided with an annular slope, and all the annular slopes are oriented in the same direction.

5. The mounting buckle for the brake pedal according to claim 1, 2, 3 or 4, wherein the top of the limit boss is provided with a mounting inclined surface.

6. The brake pedal mounting clip of claim 5, wherein the mounting ramp faces opposite the annular ramp.

7. The mounting clip for a brake pedal according to claim 5, wherein the lowest height of the mounting slope is higher than the highest height of the annular slope.

8. The mounting clip for the brake pedal according to claim 1, 2, 3 or 4, wherein the clip body, the limit boss and the annular slope are integrally formed.

9. The mounting buckle for the brake pedal according to claim 1, 2, 3 or 4, wherein the height of the limiting boss is higher than the height of the highest part of the annular slope.