JPS6185729U

JPS6185729U -

Info

Publication number: JPS6185729U
Application number: JP17129984U
Authority: JP
Priority date: 1984-11-12
Filing date: 1984-11-12
Publication date: 1986-06-05

Description

[Brief explanation of the drawing]

第１図は本考案の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
、１５……調整レバー、１５ａ……折曲部、１５
ｃ……爪、２０……ラチエツト、２０ａ……ラチ
エツト歯。 Fig. 1 is a front view of a drum brake device with a clearance adjustment device according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view in the - line direction in Fig. 1, and Fig. 3 is an enlarged sectional view in the - line direction in Fig. 1. , Figure 4 is the first
FIG. 5 is an enlarged sectional view in the - line direction in FIG. 4. FIG. In addition, in the figure, 1... drum brake device,
2, 3...Show, 10...Parking lever, 15...Adjustment lever, 15a...Bending portion, 15
c...claw, 20...ratchet, 20a...ratchet tooth.

Claims

[Scope of utility model registration request]

A pair of brake shoes movably disposed on the back plate, and a pair of brake shoes provided on one end side of the pair of brake shoes, capable of pressing the pair of brake shoes against the brake drum in response to external input. an actuator, 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 a return spring that straddles the pair of brake shoes. a parking lever that is swingably supported by either one of the pair of brake shoes and that can come into contact with one end of the strut; an adjustment lever that is swingably supported by the one of the pair of brake shoes together with the parking lever and has a pawl formed at its end; and an adjustment lever that is stretched between the adjustment lever and the parking lever and that allows the parking lever to return. The strut has at least two members screwed together with variable effective lengths, and has ratchet teeth on the outer periphery of one of the two members. The ratchet teeth and the claw of the adjustment lever can be engaged with each other when the adjustment lever swings in one direction, and when the adjustment lever swings in the other direction, the claw engages with the ratchet. 1. A drum brake with a gap adjustment device that is capable of riding over teeth, the adjustment lever having a protrusion that can be engaged with the parking lever near the center of swing of the adjustment lever.