CN-224214614-U - Brake pressure arm with good limiting effect

Abstract

The utility model provides a brake pressure arm with a good limiting effect, and belongs to the technical field of automobile accessories. The brake device solves the problems that the existing brake pressure arm cannot accurately control the brake clearance and the like. The brake pressure arm with good limiting effect comprises an arm body, wherein a ball socket is formed in the bottom of the front side of the arm body, a stop block is connected to the bottom of the arm body, an arc-shaped groove is formed in the arm body in a penetrating mode, three mounting screw holes are formed in the inner wall of the arc-shaped groove, and three limiting components are mounted on the mounting screw holes and the inner wall of the arc-shaped groove jointly. The utility model can accurately control the braking gap and ensure the braking effect.

Inventors

• WANG BINGFANG

Assignees

• 玉环市海通汽车部件股份有限公司

Dates

Publication Date

20260508

Application Date

20250715

Claims (5)

1. 1. The brake pressure arm with the good limiting effect comprises an arm body (2) and is characterized in that a ball socket (1) is arranged at the bottom of the front side of the arm body (2), a stop block (6) is connected to the bottom of the arm body (2), an arc-shaped groove (5) is formed in the arm body (2) in a penetrating mode, three mounting screw holes (4) are formed in the inner wall of the arc-shaped groove (5), and three limiting components (3) are mounted on the mounting screw holes (4) and the inner wall of the arc-shaped groove (5) jointly.
2. 2. The brake pressure arm with good limiting effect according to claim 1 is characterized in that the arm body (2) and the stop block (6) are integrally formed.
3. 3. The brake pressure arm with good limiting effect according to claim 1, wherein the limiting component (3) comprises an arc-shaped mounting plate (31), a rotating groove (32) is formed in the center of the inner wall of the arc-shaped mounting plate (31), a rotating hole (37) is formed in the bottom of the inner wall of the rotating groove (32) in a penetrating mode, and the center line of the rotating hole (37) and the center line of the mounting screw hole (4) are in the same straight line.
4. 4. A brake pressure arm with good limiting effect according to claim 3 is characterized in that an inner wall of the rotating groove (32) is provided with an inner hexagonal positioning bolt (34), and the bottom of the inner hexagonal positioning bolt (34) penetrates through the rotating hole (37) and extends to the inside of the mounting screw hole (4) to be in threaded connection with the inner wall of the mounting screw hole (4).
5. 5. The brake pressure arm with good limiting effect according to claim 3, wherein hidden holes (33) are formed in the inner wall of the arc-shaped mounting plate (31) and located on two sides of the rotating groove (32), electric telescopic rods (35) are inlaid in the inner wall of the hidden holes (33), and the telescopic ends of the two electric telescopic rods (35) are connected with an arc-shaped limiting plate (36) together.

Description

Brake pressure arm with good limiting effect Technical Field The utility model belongs to the technical field of automobile accessories, and particularly relates to a brake pressure arm with a good limiting effect. Background The pressure arm is a core force transmission component of the air pressure disc brake (ADB), is positioned between the brake air chamber and the friction plate, and has the core functions of force transmission, reinforcement and automatic clearance adjustment. For example, china patent literature discloses a pressure arm suitable for a single-push rod air pressure disc brake [ application number: 201320259991.6; authorization bulletin number: CN203308979U ], which comprises a pressure arm body, wherein one end of the pressure arm body is provided with a ball socket, the other end of the pressure arm body is fixedly connected with a rotating surface, the rotating surface comprises an inner arc surface and an outer arc surface, the middle part of the rotating surface is divided into two sections, an opening of the rotating surface and an opening of the ball socket are both arranged on the right side of the pressure arm body, wedge-shaped supports are respectively arranged at two ends of the rotating surface, and supporting feet of the wedge-shaped supports on the right side of the pressure arm body are round corner supporting feet. The pressure arm suitable for the single-push-rod air pressure disc brake meets the requirement of the single-push-rod air pressure disc brake on the force increasing ratio, but the pressure arm cannot accurately control the braking gap, and after the brake shoe is worn, the gap cannot be accurately adjusted back to a preset range, so that the problem of braking force attenuation and braking response delay caused by overlarge gap is solved. Disclosure of Invention The utility model aims to solve the problems in the prior art and provides a brake pressure arm with good limiting effect, which can accurately control a brake clearance. The brake pressure arm with good limiting effect comprises an arm body, wherein a ball socket is formed in the bottom of the front side of the arm body, a stop block is connected to the bottom of the arm body, an arc-shaped groove is formed in the arm body in a penetrating mode, three mounting screw holes are formed in the inner wall of the arc-shaped groove, and three limiting components are mounted on the mounting screw holes and the inner wall of the arc-shaped groove together. The brake pressure arm with good limiting effect is used by matching the limiting component and the stop block, the brake pressure arm has the limiting advantage, the control center of the automobile controls the electric telescopic rods to extend simultaneously, the arc limiting plates move to the one-way clutch, the gap is enabled to be accurately adjusted back to a preset range, all the electric telescopic rods further can extend simultaneously, at the moment, the arc limiting plates all enter a use state, two electric telescopic rods on one limiting component can be independently controlled to extend simultaneously, and at the moment, only one arc limiting plate enters the use state. Through the stop block, when the brake is released, the pressure arm rotates under the action of the return spring until the stop block contacts with the reference surface, and the retraction is forcibly stopped. In the brake pressure arm with good limiting effect, the arm body and the stop block are integrally formed. Through the stop block, when the brake is released, the pressure arm rotates under the action of the return spring until the stop block contacts with the reference surface, and the retraction is forcibly stopped. In the brake pressure arm with good limiting effect, the arm body and the stop block are integrally formed. Through the stop block, when the brake is released, the pressure arm rotates under the action of the return spring until the stop block contacts with the reference surface, and the retraction is forcibly stopped. In the brake pressure arm with good limiting effect, the inner wall of the rotating groove is provided with the inner hexagonal positioning bolt, and the bottom of the inner hexagonal positioning bolt penetrates through the rotating hole and extends to the inside of the mounting screw hole to be in threaded connection with the inner wall of the mounting screw hole. Through the cooperation of interior hexagonal positioning bolt and installation screw, conveniently fix a position the installation to the arc mounting panel. In the brake pressure arm with good limiting effect, the inner wall of the arc-shaped mounting plate and two sides of the rotating groove are provided with hidden holes, the inner wall of each hidden hole is inlaid with an electric telescopic rod, and the telescopic ends of the two electric telescopic rods are connected with arc-shaped limiting plates together. Through hiding the hole, can accomodate the bottom of el