JPS5945337U

JPS5945337U - Drum brake with automatic operating gap adjustment function

Info

Publication number: JPS5945337U
Application number: JP14211282U
Authority: JP
Inventors: 光康水野; 直躬三岡
Original assignee: 豊生ブレ−キ工業株式会社
Priority date: 1982-09-20
Filing date: 1982-09-20
Publication date: 1984-03-26
Also published as: JPS627869Y2

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例であ各ドラムブレーキの回転
ドラムを除いた正面図である。第２図及び第３図は、夫
々第１図の■−■視断面断面図■　　　　−−■面断面
図である。第４図は第１図の要部を示す部分断面図であ
る。１０：バッキングプレート、１６．１８ニブレーキシユ
ー、３８ニストラツト材、５２：調節部材、６０：係合
歯、６２：掛止歯、６８：自由端部。FIG. 1 is a front view of each drum brake with the rotating drum removed, showing one embodiment of the present invention. 2 and 3 are a cross-sectional view taken along the line ■-■ in FIG. 1 and a cross-sectional view taken along the line ■--■, respectively. FIG. 4 is a partial sectional view showing the main part of FIG. 1. 10: Backing plate, 16.18 Ni brake shoe, 38 Ni strut material, 52: Adjustment member, 60: Engagement tooth, 62: Latch tooth, 68: Free end.

Claims

[Scope of utility model registration request]

Expandable (a pair of first and second brake shoes attached to the backing plate and pressed against the inner peripheral surface of the rotating drum, and rotatably attached to the second brake shoe) and an adjusting member having engaging teeth formed substantially along an arc centered on the rotation center, and provided on the second brake shoe so as to be engageable with the engaging teeth of the adjusting member. A latch tooth is disposed between the first brake shoe and the adjusting member to determine the rotational position of the adjusting member, and the latch tooth is disposed between the first brake shoe and the adjusting member to prevent them from approaching each other within a certain distance. a strut member operatively connecting the brake shoe and the adjustment member;
When the amount of separation when the brake shoe and the second brake shoe are expanded exceeds a predetermined certain amount,
By changing the rotational position of the adjustment member,
A drum brake in which an operating gap between the pair of brake shoes and the rotating drum is automatically adjusted,
The latch tooth is a plate member including a free end inclined with respect to a tangent to the circular arc, the free end being fixed to the second brake shoe in a state in which the free end is engaged with the adjustment member, and 1. A drum brake equipped with an automatic operating gap adjustment function, characterized in that the adjustment member is made of an elastic member that allows rotation of the adjustment member in the direction in which the free end extends, but prevents rotation in the opposite direction.