CN220930013U

CN220930013U - Novel brake return spring anti-disengaging structure

Info

Publication number: CN220930013U
Application number: CN202322726632.3U
Authority: CN
Inventors: 姚朋威; 许晔; 刘朋; 林玮静
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2024-05-10
Anticipated expiration: 2033-10-11

Abstract

The utility model discloses a novel brake return spring anti-drop structure which comprises a return spring pin, a limiting pin, a baffle plate and a return spring, wherein a return spring mounting groove and a positioning shaft shoulder are formed in the shaft end of the return spring pin, the return spring is mounted in the return spring mounting groove, the baffle plate is mounted on the return spring pin and is positioned on the outer side of the return spring, and the limiting pin is mounted in a pin hole in the shaft end of the return spring pin and is used for limiting and fixing the baffle plate. According to the utility model, through controlling the structural size and limiting the baffle plate, the return spring is effectively prevented from falling off, and the reliability of the installation of the return spring is improved; the utility model has simple structure and easy installation, and has no influence on the installation and the disassembly of the return spring.

Description

Novel brake return spring anti-disengaging structure

Technical Field

The utility model relates to an anti-drop structure of a return spring of a brake, and belongs to the technical field of automobile parts.

Background

The problem that the return spring of the drum brake falls frequently occurs, the return spring falls to cause the brake to return to failure, the return of the brake shoe assembly is affected to produce the fault such as drag grinding, and meanwhile the falling return spring is easy to cause the damage of the brake drum and the friction plate, and the braking safety is greatly affected. In the prior art, an anti-drop scheme of directly thickening the end part of the return spring pin is adopted, so that a certain anti-drop effect can be achieved, but the increased diameter is limited, the installation and the disassembly of the return spring are affected, and the difficulty of the installation and the disassembly of the return spring is increased. The falling off of the return spring greatly influences the use of a brake and the braking performance of the whole vehicle, so that the return spring falling-off prevention structure which is simple in structure and easy to assemble is designed, the movement of the return spring on the return spring pin is limited, and the installation reliability of the return spring is improved, so that the problem to be solved by the person in the field is solved urgently.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the return spring anti-falling structure aiming at the defects in the prior art, and the return spring is effectively prevented from falling off under the condition that the installation of the return spring is not influenced.

In order to solve the technical problem, the utility model provides an anti-drop structure of a brake return spring, which comprises a return spring pin, a limiting pin, a baffle plate and a return spring, wherein a return spring mounting groove and a positioning shaft shoulder are arranged at the shaft end of the return spring pin, the return spring is mounted in the return spring mounting groove, the baffle plate is mounted on the return spring pin and is positioned at the outer side of the return spring, and the limiting pin is mounted in a pin hole at the shaft end of the return spring pin and is used for limiting and fixing the baffle plate.

The depth L3 of the installation groove of the return spring is 0-3mm greater than the radius of a spring wire of the return spring, and the depth L4 of a hook part of the return spring is 0-10mm greater than the difference of the diameter C of the return spring pin minus the depth L3 of the installation groove.

The diameter A of the baffle plate is 0-10mm larger than the opening distance L2 of the hook part of the return spring, and the distance L1 between the baffle plate and the mounting groove is 0-3mm smaller than the radius of the spring wire of the return spring.

The beneficial effects are that: according to the utility model, through controlling the structural size and limiting the baffle plate, the return spring is effectively prevented from falling off, and the reliability of the installation of the return spring is improved; the utility model has simple structure and easy installation, and has no influence on the installation and the disassembly of the return spring.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged schematic view of part M of FIG. 1 in accordance with the present utility model;

FIG. 3 is a schematic view of the structure of the return spring pin of the present utility model;

FIG. 4 is a schematic view of the return spring of the present utility model;

fig. 5 is a schematic side view of the structure of the present utility model.

In the figure: 1. a return spring pin; 11. a mounting groove; 12. positioning a shaft shoulder; 2. a limiting pin; 3. a baffle; 4. and a return spring.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1-5, the utility model provides a brake return spring anti-drop structure, which comprises a return spring pin 1, a limiting pin 2, a baffle plate 3 and a return spring 4, wherein the shaft end of the return spring pin 1 is provided with a return spring mounting groove 11 and a positioning shaft shoulder 12, the return spring 4 is arranged in the return spring mounting groove 11, the baffle plate 3 is arranged on the return spring pin 1 and positioned on the outer side of the return spring 4, the limiting pin 2 is arranged in a pin hole at the shaft end of the return spring pin 1 and is used for limiting and fixing the baffle plate 3, and limiting can also be performed by using a clamp spring and the like.

The depth L3 of the installation groove 11 of the return spring 4 is 0-3mm greater than the radius of the spring wire of the return spring 4, so that the return spring is more difficult to separate from the groove; the hook depth L4 of the return spring 4 is 0-10mm larger than the difference of the diameter C of the return spring pin 1 minus the depth L3 of the mounting groove, so that the hook is not easy to fall off.

The diameter A of the baffle plate 3 is 0-10mm larger than the opening distance L2 of the hook part of the return spring 4, and the distance L1 from the baffle plate 3 to the mounting groove 11 is 0-3mm smaller than the radius of the spring wire of the return spring 4; when the return spring is separated from the return spring pin groove, the return spring can be blocked by the baffle plate, and the spring can naturally slide into the groove due to the fact that the distance L1 from the baffle plate to the groove is smaller than the radius of the return spring wire, and meanwhile the baffle plate can obstruct the rotation of the return spring, reduce the rotatable angle of the return spring and effectively prevent the return spring from falling off.

The utility model has simple structure and easy installation, can effectively prevent the return spring from falling off, and improves the installation reliability of the drum brake return spring.

The above-described embodiments of the utility model are intended to be examples only, and not to be limiting, and all changes that come within the scope of the utility model or equivalents thereto are intended to be embraced thereby.

Claims

1. The utility model provides a novel stopper return spring anticreep structure which characterized in that: including return spring pin (1), spacer (2), separation blade (3) and return spring (4), return spring pin (1) axle head is equipped with return spring mounting groove (11) and location shoulder (12), and return spring (4) are installed in return spring mounting groove (11), and spacer (3) are installed on return spring pin (1) and are located return spring (4) outside, and spacer (3) are installed in the pinhole of return spring pin (1) axle head, are spacing fixed.

2. The novel brake return spring anti-drop structure according to claim 1, wherein: the depth L3 of the return spring mounting groove (11) is 0-3mm greater than the radius of a spring wire of the return spring (4), and the hook depth L4 of the return spring (4) is 0-10mm greater than the difference of the diameter C of the return spring pin (1) minus the depth L3 of the mounting groove (11).

3. The novel brake return spring anti-drop structure according to claim 1 or 2, characterized in that: the diameter A of the baffle plate (3) is 0-10mm larger than the opening distance L2 of the hook part of the return spring (4), and the distance L1 between the baffle plate (3) and the mounting groove (11) is smaller than the spring wire radius 0-3mm of the return spring (4).