JPS58111439U

JPS58111439U - drum brake

Info

Publication number: JPS58111439U
Application number: JP781482U
Authority: JP
Inventors: 中馬　努; 武藤　正則; 伊神　謙三
Original assignee: トヨタ自動車株式会社; 豊生ブレ−キ工業株式会社
Priority date: 1982-01-23
Filing date: 1982-01-23
Publication date: 1983-07-29
Also published as: JPH02501Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１因は本考案の一実施例のブレーキドラムを取除いた
正面図である。第２図は第１図の■−■視断面断面図る
。第３図は第１図の実施例の作用を説明する図である。２：バッキングプレート、４：ホイールシリンダ、８．
１０：シューアッセンブリ、２４：ブレーキド　。ラム、２６：リターンスプリング、２８：ストイツト、
３４−ピストン、３６：ピストンインサート。The first factor is a front view of an embodiment of the present invention with the brake drum removed. FIG. 2 is a sectional view taken along the line ■-■ in FIG. FIG. 3 is a diagram illustrating the operation of the embodiment shown in FIG. 1. 2: Backing plate, 4: Wheel cylinder, 8.
10: Shoe assembly, 24: Braked. Ram, 26: Return Spring, 28: Stoits,
34-piston, 36: piston insert.

Claims

[Claims for Utility Model Registration] A pair of shoe assemblies movably supported by a backing plate and opposed to the inner circumferential surface of the brake drum at a slight distance from the inner circumferential surface, and one end of the shoe assembly. a piston having an abutting piston insert and fixed to the backing plate;
A drum brake comprising a wheel cylinder that presses the shoe assembly against the brake drum, and a return spring that biases the shoe assembly in a direction opposite to the direction of the pressing force, wherein the piston insert is attached to one end of the shoe assembly. has a width larger than the travel distance in the direction perpendicular to the backing plate surface allowed by a strut installed between the shoe assembly and another shoe assembly, or one end of the shoe assembly is connected to the piston insert. When the shoe assembly is detached from the brake drum, the outer diameter of the shoe assembly becomes wider than the inner diameter of the brake drum due to the inclination caused by the contact between the side surface of the shoe web of the shoe assembly and the circumferential edge of the piston insert, and the outer diameter of the shoe assembly becomes wider than the inner diameter of the brake drum. A drum brake characterized in that when one end of the drum brake is moved, the one end is not removed from the piston insert, or even if it is removed, the brake drum cannot be assembled.