JPS59157132U

JPS59157132U - Braking gap automatic adjustment device for mechanical drum brakes

Info

Publication number: JPS59157132U
Application number: JP5169183U
Authority: JP
Inventors: 出沢　功
Original assignee: 日信工業株式会社
Priority date: 1983-04-07
Filing date: 1983-04-07
Publication date: 1984-10-22
Also published as: JPS6224840Y2

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示すもので、第１図は正面図
、第２図は背面図、第３図は第２図の■−ｍ断面図、第
４図は斜視図、第５図はストッパレバーの作動状態を示
す正面図、第６図は同じくその断面図、第７図はスプリ
ングの取付状態を示す断面図、第８図（まアジャストレ
バーの取付状態を示す断面図、第９図は同じくその正面
図、第１０図はレバーリターンスプリングの取付状態を
示す背面図である。　′ ５はカム部材、５ｆは軸部、２３はストッパレバー、２
３ａは爪部、２３ｂは係合爪部、２４は開口部、２４ａ
１ま係接部、２４ｂは軸逃孔部、２８はアジャストレバ
ーである。壺１図追５図一豪２図　　− 豪４図− 田、　　５− １？ＣＩ９１７）７因２７２β １’？壷８ｔ！ｌ　　　　　　豪９図The drawings show one embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a rear view, FIG. 6 is a sectional view of the stopper lever, FIG. 7 is a sectional view of the spring installed, and FIG. 8 is a sectional view of the adjuster lever installed. Figure 9 is a front view of the same, and Figure 10 is a rear view showing how the lever return spring is installed.' 5 is a cam member, 5f is a shaft portion, 23 is a stopper lever, 2
3a is a claw part, 23b is an engaging claw part, 24 is an opening part, 24a
1 is an engaging portion, 24b is a shaft relief portion, and 28 is an adjustment lever. Vase 1, 5, 1, 2 - 4, 5 - 1? CI 917) 7 factors 272β 1'? 8 tons of pot! l Australia 9 map

Claims

[Scope of utility model registration request]

a cam collar that abuts the shoe web and is slidably engaged in the axial direction with a cam member that expands the brake shoe;
An adjustment bolt that is screwed into the cam member in the axial direction and pushes the cam collar, an adjustment gear that is integrally rotatably engaged with the adjustment bolt, and is engaged with the adjustment gear to restrict rotation of the cam member in the operating direction. In an automatic braking gap adjustment device for a mechanical drum brake, the stopper lever is comprised of a stopper lever and an adjustment lever that changes the engagement position with the adjustment gear when a lining rotatably provided on the cam member is worn beyond a predetermined amount. , a claw portion that engages with the adjustment gear, an engaging claw portion that is in contact with a wall surface at a position outside the claw portion, and an opening portion that is inserted into the shaft portion of the cam member, and the opening portion is configured to be inserted into the shaft portion of the cam member. The stopper lever is composed of an engaging part that slides in contact with the shaft part, and a shaft relief part formed by a concentric circle centered on the tip of the engaging claw part, and the stopper lever brings the engaging part into contact with the shaft part, so that the spring and the The cam member is biased in a constant force direction by an engagement pin provided upright on the wall, and when the stopper lever moves a predetermined amount, its retaining claw portion is engaged in the engagement recess provided on the wall and girdered. An automatic braking gap adjustment device for a mechanical drum brake, which rotates a stopper lever about this locking point to release the meshing relationship between the stopper lever and an adjustment gear.