JPS6024949U

JPS6024949U - Automatic braking gap adjustment device for hydraulically operated brakes

Info

Publication number: JPS6024949U
Application number: JP11680483U
Authority: JP
Inventors: 福沢　源一郎
Original assignee: 日信工業株式会社
Priority date: 1983-07-27
Filing date: 1983-07-27
Publication date: 1985-02-20
Also published as: JPS6221798Y2

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 the drawing]

第１図は本考案の一実施例である液圧作動式ブレーキに
おける制動間隙自動調整装置を用いたドラムブレーキの
要部断面正面図、第２図は第１図の制動間隙自動調整装
置部分の分解斜視図である。１はホイールシリンダ、３はシリンダ本体、４は液圧室
、５はピストン、１０は鍔部、ｌｅａは連通孔、１１は
カップ室、１２はアジャストナツト、１２ｂはテーパ付
凹部、１３はスプリングリテーナ、１４はアジャストボ
ルト、Ａは制動間隙自動調整装置である。Fig. 1 is a cross-sectional front view of the main parts of a drum brake using an automatic braking gap adjustment device in a hydraulically operated brake, which is an embodiment of the present invention, and Fig. 2 is a partial front view of the automatic braking gap adjustment device in Fig. 1. It is an exploded perspective view. 1 is a wheel cylinder, 3 is a cylinder body, 4 is a hydraulic chamber, 5 is a piston, 10 is a flange, lea is a communication hole, 11 is a cup chamber, 12 is an adjustment nut, 12b is a tapered recess, 13 is a spring retainer , 14 is an adjustment bolt, and A is an automatic braking gap adjustment device.

Claims

[Scope of utility model registration request]

An adjustment nut and an adjustment bolt screwed together with a multi-thread screw are arranged in a hydraulic pressure chamber defined by a piston slidably inserted into a cylinder and its opposing part, and the clutch surface of this adjustment bolt is A braking gap in a hydraulically operated brake that abuts against the clutch surface of the opposing part and holds the adjusting bolt on the piston, and when a braking gap of more than a predetermined value occurs, the adjusting bolt is screwed to advance the piston. In the automatic adjustment device, a plurality of communication holes for communicating the hydraulic pressure chamber and the cup chamber are formed in a flange portion defining a cup chamber of the piston, and a flange portion of the adjustment nut is provided with a plurality of communication holes that communicate with the piston of the adjustment nut. An appropriate number of locking holes are formed in the ring-shaped base of the spring retainer to communicate with the recesses formed in the abutting surface of the spring retainer, and locking claws that engage with the locking holes of the adjustment nut are formed in the ring-shaped base of the spring retainer. A spring leg having elastic force is formed by bending into a U-shape on the outer periphery of the ring-shaped base, and the locking pawl of the spring retainer is used as the locking pawl of the adjustment nut, and the tip of the spring leg is An automatic braking gap adjustment device for a hydraulically operated brake, characterized in that the device engages with the communication holes of a piston.