JPS628439U

JPS628439U -

Info

Publication number: JPS628439U
Application number: JP9993685U
Authority: JP
Priority date: 1985-06-29
Filing date: 1985-06-29
Publication date: 1987-01-19

Description

[Brief explanation of drawings]

第１図は第２図における―視断面の要部を
拡大して示す図である。第２図は本考案の一例が
適用されれ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図における要部を拡大して示
す一部断面図である。第４図は第２図における
―視断面の要部を拡大して示す図である。１０：バツキングプレート、１２，１４：ブレ
ーキシユー、２２：ホイールシリンダ、２４：ピ
ストン、３０：ストラツト、３８：アジヤストレ
バー、５０：アジヤストラツチ、５６：扇状部（
当接部）。 FIG. 1 is an enlarged view of a main part of a cross section taken along the line "-" in FIG. FIG. 2 is a front view showing the main parts of a drum brake to which an example of the present invention is applied. FIG. 3 is a partially sectional view showing an enlarged main part in FIG. 2. FIG. FIG. 4 is an enlarged view showing a main part of a cross section taken along the line "-" in FIG. 2. FIG. 10: Bucking plate, 12, 14: Brake shoe, 22: Wheel cylinder, 24: Piston, 30: Strut, 38: Adjustment lever, 50: Adjustment strap, 56: Fan-shaped part (
contact part).

Claims

[Claims for Utility Model Registration] A wheel cylinder fixed on a bucking plate, a wheel cylinder disposed on the bucking plate,
a pair of brake shoes that are expanded by the pistons of the wheel cylinder; an adjustment lever that is attached to one brake shoe so as to be rotatable in one direction; and a strut whose end is attached to the other brake shoe, and as the strut moves relative to the one brake shoe, the adjustment lever is rotated in the one direction, thereby increasing the shoe gap. In the drum brake automatic shoe clearance adjustment device of the adjustable type, the adjustment lever is in contact with a piston of the wheel cylinder, and the friction force with the piston increases as the pressing force of the piston increases. An automatic shoe gap adjustment device for a drum brake, characterized in that an abutment portion is provided to prevent rotation of the adjustment lever in the one direction.