JPS5935747U

JPS5935747U - Braking gap automatic adjustment device for mechanical drum brakes

Info

Publication number: JPS5935747U
Application number: JP13170382U
Authority: JP
Inventors: 出沢　功
Original assignee: 日信工業株式会社
Priority date: 1982-08-31
Filing date: 1982-08-31
Publication date: 1984-03-06
Also published as: JPS614753Y2

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■−■断面図、第４
図は平面図、第５図はフルアジャスト時の要部の拡大図
、第６図はフルアジャスト後ストツパレバーの移動許容
限界状態を示す要部の拡大図、第７図はストッパレバー
とアジャストギアどの噛合関係を解除した状態を示す要
部の拡大図である。２．２′はブレーキシュー、２ｂ、　　２ｂ’はシュー
ウェブ遊端部、５はカム部材、７はブレーキアーム、１
１はアジャストボルト、１５は隔壁、２１はストッパレ
バー、２２はく字形孔、２３は支持ピン、２５はスプリ
ング部材、２６はアジャストレバーである。舟１図 β゛ト、The drawings show one embodiment of the present invention, and Figure 1 is a front view;
Figure 2 is a rear view, Figure 3 is a sectional view taken along ■-■ of Figure 2, and Figure 4 is a rear view.
The figure is a plan view, Figure 5 is an enlarged view of the main parts during full adjustment, Figure 6 is an enlarged view of the main parts showing the permissible movement limit state of the stopper lever after full adjustment, and Figure 7 is an enlarged view of the stopper lever and adjustment gear. FIG. 3 is an enlarged view of main parts showing a state where the meshing relationship is released. 2.2' is a brake shoe, 2b, 2b' is a shoe web free end, 5 is a cam member, 7 is a brake arm, 1
1 is an adjustment bolt, 15 is a partition wall, 21 is a stopper lever, 22 is a dogleg-shaped hole, 23 is a support pin, 25 is a spring member, and 26 is an adjustment lever. Figure 1 of the boat,

Claims

[Scope of utility model registration request]

a cam collar that is slidably fitted in the axial direction to a cam member that expands the brake shoes by rotation of the brake arm and comes into contact with the free end of the shoe web; and 1, a cam collar that is screwed into the cam member in the axial direction and pushes the cam collar. an adjustment bolt that is rotatably engaged with the adjust bolt, an adjust gear that is rotatably engaged with the adjust bolt, a stopper lever that is engaged with the adjust gear to restrict rotation of the cam member in the operating direction, and a lining that is rotatably provided with the cam member. In an automatic braking gap adjustment device for a mechanical drum brake, which comprises an adjustment lever that adjusts by changing the engagement position in the operating direction of the cam member when the cam member is worn beyond a predetermined amount,
A bent part of the stopper lever is formed with an angle-shaped hole facing in the counteracting direction of the cam member, and the stopper lever is inserted into the support pin provided upright on the fixed body, and the stopper lever is inserted into the spring member. The support pin is biased in the counteracting direction, and the support pin is located in the guide portion of the dogleg-shaped hole on the adjustment gear side during adjustment, and moves to the guide portion on the non-adjustment gear side after full adjustment, and the support pin is positioned in the guide portion of the dogleg-shaped hole on the adjustment gear side when adjusting. An automatic braking gap adjustment device for a mechanical drum brake, characterized in that the device is configured to release the meshing relationship with the mechanical drum brake.