JPS6280036U

JPS6280036U -

Info

Publication number: JPS6280036U
Application number: JP17327885U
Authority: JP
Priority date: 1985-11-11
Filing date: 1985-11-11
Publication date: 1987-05-22

Description

[Brief explanation of the drawing]

第１図は第２図の要部拡大図である。第２図は
本考案が適用されたシユー間隙自動調節装置を備
えたドラムブレーキの要部を示す正面図である。
第３図は第２図における―視断面の要部を示
す図である。第４図および第５図は本考案の他の
例の要部をそれぞれ示す図であつて、第１図に対
応する図である。第６図は従来のシユー間隙自動
調節装置の要部を示す図であつて、第１図に対応
する図である。１２，１４：ブレーキシユー、３２：係合歯、
３４：アジヤストレバー、３８，６２，６６：係
合歯、４０，６０，６４：アジヤストラツチ、４
６：ストラツト。 FIG. 1 is an enlarged view of the main part of FIG. 2. FIG. 2 is a front view showing the main parts of a drum brake equipped with an automatic shoe gap adjustment device to which the present invention is applied.
FIG. 3 is a diagram illustrating a main part of a cross-section seen from the side in FIG. 2. FIGS. 4 and 5 are diagrams respectively showing essential parts of other examples of the present invention, and correspond to FIG. 1. FIG. 6 is a diagram showing the main parts of a conventional shoe gap automatic adjustment device, and corresponds to FIG. 1. 12, 14: Brake shoe, 32: Engagement tooth,
34: Adjustment lever, 38, 62, 66: Engagement teeth, 40, 60, 64: Adjustment stretch, 4
6: Strut.

Claims

[Claims for Utility Model Registration] In a drum brake of the type in which a pair of brake shoes that are closely spaced from each other are supported from the inner circumferential side by a strut located between them, the brake shoes can be rotated to one side. an adjustment lever that is rotatably attached to the one end of the strut and engaged with one end of the strut; and an engagement tooth that is rotatably attached to the one brake shoe and is formed at the tip of the adjustment lever. and an adjustment stretch that prevents the adjustment lever from rotating in the direction of expanding the shoe gap but allows rotation in the direction of reducing the shoe gap, and automatically adjusts the shoe gap of the brake shoe. A plurality of engagement teeth of the adjustment lever are formed approximately along an arc approximately centered on the rotation center point thereof, and an engagement tooth is provided on the adjustment strap for engaging with the engagement teeth. 1. An automatic shoe gap adjustment device for a drum brake, characterized in that a plurality of are formed along a straight line or a curved line concave toward the adjuster strap.