JPS597926U

JPS597926U - drum brake

Info

Publication number: JPS597926U
Application number: JP10250482U
Authority: JP
Inventors: 筒井　隆次
Original assignee: 日産自動車株式会社
Priority date: 1982-07-08
Filing date: 1982-07-08
Publication date: 1984-01-19

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図は従来のデュオサーボ型ドラムブレーキの正面図
、第２図は第１図の■−■線要部断面図、第３図は従来
の他のブレーキシュー支持構造例を示す要部断面図、第
４図乃至第６図は各々本考案の要部断面図、第７図はブ
レーキシューの他の支持構造例を示す要部断面図である
。１：バンクプレート、２，３ニブレーキシユｉ１２　ａ
、　　３　ａ：　シ５ｔ−−ウェブ、２ｂ、　　３ｂ：
シューリブ、５：ホイールシリンダ（拡開手段）、１０
．１１：シューホールドダウン、・１８：シューホール
ドピン、１９：ワッシャ、２０：コイルスプリング（弾
゛　柱体）、２１：板ばね（弾性体）、２２：ゴム又は
エラストマより成る厚肉円筒状体（弾性体）。Figure 1 is a front view of a conventional duo-servo type drum brake, Figure 2 is a cross-sectional view of the main part taken along the line ■-■ in Figure 1, and Figure 3 is a cross-section of the main part showing another example of the conventional brake shoe support structure. 4 to 6 are sectional views of essential parts of the present invention, and FIG. 7 is a sectional view of essential parts showing another example of a support structure for a brake shoe. 1: Bank plate, 2, 3 Ni brake system i12 a
, 3a: 5t--web, 2b, 3b:
Shoe rib, 5: Wheel cylinder (expansion means), 10
．． 11: Shoe hold down, 18: Shoe hold pin, 19: Washer, 20: Coil spring (elastic column), 21: Leaf spring (elastic body), 22: Thick cylindrical body made of rubber or elastomer ( elastic body).

Claims

[Scope of utility model registration request]

A brake drum that rotates together with the wheels, a pair of brake shoes that are expanded by an expansion means and come into sliding contact with the inner circumferential surface of the brake drum, and a pair of brake shoes that are connected to each other via the expansion means and a shoe hold pin that is tiltably erected. In a drum brake having a back plate fixed to the vehicle body side supporting brake shoes, an elastic body is provided between the shoe web and the back plate on the outer periphery of the shoe hold pin planted on the back plate. 1. A drum brake, characterized in that a gap is formed between a side surface of a shoe rib and a back plate, and a shoe hold pin is inserted and locked in a shoe web to support the brake shoe.