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A three-shoe drum brake mechanism

A brake mechanism and brake shoe technology, which is applied in the field of vehicle engineering, can solve problems such as uneven wear of brake shoes and easy fatigue damage of the actuating mechanism

Active Publication Date: 2020-10-27
GAOYOU SHUNDA POWER MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a three-brake-shoe drum brake mechanism, which can effectively improve the brake shoe by changing the traditional brake shoe layout and the driving form of the actuating mechanism. Disadvantages of uneven wear and fatigue damage of the actuator during work

Method used

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  • A three-shoe drum brake mechanism
  • A three-shoe drum brake mechanism
  • A three-shoe drum brake mechanism

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Embodiment 1

[0024] A three-brake shoe-drum brake mechanism, such as Figure 1-4 shown. The brake mechanism includes a casing 1, a drive gear shaft 2, a central special-shaped gear 3, a connecting arm 4, a brake shoe 5, a restoring spring 6, a fixed shaft pin 7 and a connecting pin 8; connecting arm 4, a braking shoe 5, and a restoring spring 6 and fixed shaft pin 7 are provided with three respectively, and there are six connecting pins 8; the outline of the shell 1 is a regular geometric shape, and its inner wall is provided with a drive gear shaft hole, a central shaft hole and a fixed shaft pin mounting hole; the outer edge of the shell 1 Three brake shoes 5 are evenly arranged, and two adjacent brake shoes 5 are connected by a return spring 6; a drive gear shaft 2 is arranged in the drive gear shaft hole, and the drive gear shaft 2 is arranged in the brake shoe 5 to drive The axis of the gear shaft 2 is set eccentrically with the axis of the housing 1, and the driving gear shaft 2 is ...

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Abstract

The invention discloses a novel three-brake shoe drum brake mechanism, and belongs to the technical field of vehicle engineering. The mechanism comprises a shell, a driving gear shaft, a central special-shaped gear, connecting arms and brake shoes; a driving gear shaft hole, a central shaft hole and fixed pin mounting holes are formed in the shell, wherein the driving gear shaft is arranged in thedriving gear shaft hole, the central special-shaped gear is arranged in the central shaft hole, and the driving gear shaft and the central special-shaped gear are connected through gear teeth to forma gear driving pair; three brake shoes are arranged in the shell, and each adjacent brake shoes are connected through a reset spring; the driving gear shaft is arranged in the brake shoes; the central special-shaped gear is connected with the brake shoes through the connecting arms; and the connecting arms are arranged in the fixed pin mounting holes. According to the mechanism, the motion mode of the brake shoes is changed, the utilization rate of the brake surfaces of the brake shoes is improved, and the problem that the brake surfaces of the brake shoes are uneven in abrasion is solved; and a gear actuation mode is adopted, so that the fatigue damage of the brake mechanism is improved, and the transmission efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of vehicle engineering, and in particular relates to a three-shoe-drum brake mechanism. Background technique [0002] Drum brakes have been used in automobiles for nearly a hundred years. Due to their superior reliability and powerful braking force, drum brakes are still widely used in many current models. The core components of drum brakes include actuators, brake shoes, and recovery mechanisms. When the drum brake is working, the brake shoe is mostly expanded by the actuating mechanism to achieve the purpose of braking. When the braking force is withdrawn, the brake shoe is pulled back to its original position by the restoring mechanism. Most of the existing drum brake structures are that the brake shoe rotates around a fixed shaft so that the braking surface of the brake shoe is combined with the brake drum to generate braking force. Since the brake shoe and the brake drum are not in strict surface cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D51/56F16D65/09F16D65/16F16D121/14F16D125/48
CPCF16D51/56F16D65/09F16D65/16F16D2121/14F16D2125/48
Inventor 戚荣斌印正权盘朝奉王健
Owner GAOYOU SHUNDA POWER MACHINE
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