JPS6185730U

JPS6185730U -

Info

Publication number: JPS6185730U
Application number: JP17130084U
Authority: JP
Priority date: 1984-11-12
Filing date: 1984-11-12
Publication date: 1986-06-05

Description

[Brief explanation of drawings]

第１図は本考案の第１実施例による隙間調整装
置付ドラムブレーキ装置の正面図、第２図は第１
図における−線方向拡大断面図、第３図は第
１図における−線方向拡大断面図、第４図は
第１図における−線方向拡大断面図、第５図
は第４図における−線方向拡大断面図、第６
図は本考案の第２実施例による隙間調整装置付ド
ラムブレーキ装置の要部の部分破断平面図、及び
第７図は第６図における−線方向断面図であ
る。なお図において、１……ドラムブレーキ装置、
２，３……シユー、１０……パーキング・レバー
、１１……引張ばね、１５……調整レバー、１５
ｄ……凸部、１５ｃ……爪、２０……ラチエツト
、２０ａ……ラチエツト歯、３０，３０′……ス
トラツト、１８ｃ……突部。 FIG. 1 is a front view of a drum brake device with a gap adjustment device according to a first embodiment of the present invention, and FIG.
Fig. 3 is an enlarged sectional view in the - line direction in Fig. 1, Fig. 4 is an enlarged sectional view in the - line direction in Fig. 1, and Fig. 5 is an enlarged sectional view in the - line direction in Fig. 4. Enlarged sectional view, No. 6
The figure is a partially cutaway plan view of a main part of a drum brake device with a gap adjustment device according to a second embodiment of the present invention, and FIG. 7 is a cross-sectional view in the - line direction in FIG. 6. In addition, in the figure, 1... drum brake device,
2, 3...Show, 10...Parking lever, 11...Tension spring, 15...Adjustment lever, 15
d...Convex portion, 15c...Claw, 20...Ratchet, 20a...Ratchet tooth, 30, 30'...Strut, 18c...Protrusion.

Claims

[Scope of utility model registration request]

A pair of brake shoes movably disposed on a back plate; and an actuator provided at one end of the pair of brake shoes and capable of pressing the pair of brake shoes against a brake drum in response to input from the outside. , an anchor provided on the other end side of the pair of brake shoes, a return spring that biases the pair of brake shoes in a direction away from the brake drum, and an anchor disposed astride the pair of brake shoes. a strut that can define the interval between the brake shoes at the return position; a parking lever that is swingably supported by one of the pair of brake shoes and that can come into contact with one end of the strut; and a parking lever that is swingable. and an adjustment lever disposed on the strut and having a pawl at the end thereof, the strut having at least two members screwed to each other so as to have variable effective lengths, and ratchet teeth formed on the outer periphery of one of the two members. , the ratchet teeth and the pawl of the adjustment lever can be engaged when the adjustment lever is swung in one direction, and the pawl can overcome the ratchet teeth when the adjustment lever is swung in the other direction. In the drum brake with a gap adjustment device, the strut is provided with a protrusion that engages with the adjustment lever to forcibly swing in either direction,
A drum brake with a gap adjustment device, wherein the adjustment lever is pivoted in another direction by an elastic body having a predetermined biasing force.