JPS5945335U

JPS5945335U - Drum brake with automatic operating clearance adjustment function

Info

Publication number: JPS5945335U
Application number: JP14211082U
Authority: JP
Inventors: 一泰薦田; 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

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る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図は第１図の■−■
視断面断面図る。第３図は第１図　　　、の要部を示す
部分断面図である。第４図は案内部材を備えた従来のド
ラムブレーキの要部を示した正面図である。第５図は第
４図の■−■視断面断面図る。１０：バッキングプレート、１６．１８ニブレーキシユ
ー、３８ニストラット部材、５２：調節部材、６０：係
合歯、６２：掛止歯、６４：掛止部材、６８：引張コイ
ルスプリング、７２：Ｕ字状係止部、７４：凹曲部、７
６：ガイド部。FIG. 1 is a front view of a drum brake according to an embodiment of the present invention, with the rotating drum removed. Figure 2 shows ■-■ of Figure 1.
A cross-sectional view. FIG. 3 is a partial sectional view showing the main part of FIG. 1. FIG. 4 is a front view showing the main parts of a conventional drum brake equipped with a guide member. FIG. 5 is a sectional view taken along the line ■-■ in FIG. 4. 10: Backing plate, 16.18 Ni brake shoe, 38 Ni strut member, 52: Adjustment member, 60: Engagement tooth, 62: Latch tooth, 64: Latch member, 68: Tension coil spring, 72: U Letter-shaped locking portion, 74: Concave curved portion, 7
6: Guide section.

Claims

[Claims for Utility Model Registration] A first brake shoe and a second brake shoe that are expandably attached to a backing plate and pressed against the inner circumferential surface of a rotating drum, and a first brake shoe and a second brake shoe that are rotated by the second brake shoe. a plate-shaped adjustment member that can be mounted and has engagement teeth on its end face that are formed approximately along an arc centered on the rotation center; and a latch tooth that engages with the engagement teeth of the adjustment member. a plate-shaped latching member that is rotatably provided on the second brake shoe and that allows the adjusting member to rotate in one direction but prevents the adjusting member from rotating in the other direction; a strut member disposed between the first brake shoe and the adjustment member to prevent them from coming closer than a certain distance, and operatively connect the first brake shoe and the adjustment member; The rotating position of the adjustment member is changed when the separation amount when the first brake shoe and the second brake shoe are expanded exceeds a predetermined certain amount. , in a drum brake in which an operating gap between the pair of brake shoes and the rotating drum is automatically adjusted, the latching teeth of the latching member are oriented in a direction to engage with the engaging teeth of the adjusting member. Both ends of a tension coil spring that biases the latching member are respectively latched to the latching member and the adjusting member, and one of the two ends is attached in the thickness direction of the latching member or the adjusting member. a concave curved portion that is rotated so as to span both sides of the backing plate side and the rotating drum side of the latching member or adjustment member; U having opposing guide portions extending to the engaging portion with the engaging teeth of and sandwiching the periphery of the engaging portion.
1. A drum brake equipped with an automatic operating gap adjustment function, characterized in that a letter-shaped locking portion is formed, and the guide portion prevents displacement of the locking member and the adjusting member in the plate thickness direction.