JPS5879141U

JPS5879141U - Vehicle drum brake

Info

Publication number: JPS5879141U
Application number: JP17482681U
Authority: JP
Inventors: 金子　久教
Original assignee: トヨタ自動車株式会社
Priority date: 1981-11-25
Filing date: 1981-11-25
Publication date: 1983-05-28

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 drawings]

第１図は本考案に係る車両用ドラムブレーキの側面図、
第２図は同要部拡大斜視図、第３図は同要部拡大側面図
、第４図は第３図のＩＶ−ＩＶ線に沿う断面図である。符号の説明、１１・・・ブレーキシュー、１１ａ・・・
上端部、ｌｌｂ・・・下端部、１２・・・バッキングプ
レート、１３・・・アンカーピン、１４・・・ホイルシ
リンダ、１５・・・アンカーシリンダ、１５ａ・・・貫
通孔、１５ｂ・・・内孔、１６・・・ホイルシリンダピ
ストン、１７・・・ブレーキドラム、１８・・・シャフ
ト、１９・・・アンカーピストン、Ｒ・・・液室、■・
・・開閉弁、Ａ・・・ドラムブレーキ。FIG. 1 is a side view of a vehicle drum brake according to the present invention;
2 is an enlarged perspective view of the main part, FIG. 3 is an enlarged side view of the main part, and FIG. 4 is a cross-sectional view taken along the line IV--IV in FIG. 3. Explanation of symbols, 11...brake shoe, 11a...
Upper end, llb...Lower end, 12...Backing plate, 13...Anchor pin, 14...Foil cylinder, 15...Anchor cylinder, 15a...Through hole, 15b...Inside Hole, 16...Wheel cylinder piston, 17...Brake drum, 18...Shaft, 19...Anchor piston, R...Liquid chamber,■・
...Opening/closing valve, A...drum brake.

Claims

[Scope of utility model registration request]

A pair of arc-shaped brake shoes that are expandably assembled to a backing plate and can be slidably connected to a brake drum; an anchor that is fixed to the backing plate between one end of these brake shoes and that can hold one end of each brake shoe; and a foil cylinder to which hydraulic pressure from the master cylinder is applied; the foil cylinder is slidably assembled to the foil cylinder, and is engaged with one end of each of the brake shoes so that the hydraulic pressure is applied from the master cylinder into the foil cylinder. a pair of foil cylinder pistons that expand each of the brake shoes when a hydraulic pressure of An anchor cylinder comprising a through hole opening toward the direction of the anchor cylinder, and an inner hole communicating with the through hole at an inner end and communicating with a master cylinder at an outer end via an on-off valve, the anchor cylinder being slidable in the through hole of the anchor cylinder. a shaft that is fitted and engages the other end of each brake shoe at both ends;
an anchor piston that is slidably assembled in the inner hole of the anchor cylinder, forms a liquid chamber in the inner hole that communicates with the master cylinder via the on-off valve, and is engageable with the shaft; Drum brakes for vehicles equipped with