JPS58116836U

JPS58116836U - Braking gap automatic adjustment device for mechanical drum brakes

Info

Publication number: JPS58116836U
Application number: JP14441781U
Authority: JP
Inventors: 徳永　正明
Original assignee: 日信工業株式会社
Priority date: 1981-09-29
Filing date: 1981-09-29
Publication date: 1983-08-09
Also published as: JPS6027232Y2

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]

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図は第１図の■−■断面図、第３図は平面図、第４
図は制動間隙調整前の要部の断面図、第５図は制動間隙
調整後の要部め断面図、第６図はカム部材を作動した状
態を示す要部の断面図である。 ’　２．　２’はブレーキシュー、２ｂ、　　２ｂ’は
シ、ニーウェブ遊端部、５はカム部材１，５ａはカム部
１、・９，９′はカムカラー溝、１２．１２’はカムカ
ラーである。補正　昭５７．１０．　５実用新案登録請求の範囲を次のように補正する。 ◎実用新案登録請求の範囲ブレーキアームの回動によってブレーキシューを拡開す
るカム部材のカム部に、シューウェブ遊端部が当接する
カムカラーをカム軸方向に摺動自在に嵌合し、カム部材
に螺合したアジャストボルトの螺動によってカムカラー
をカム軸方向に移動するとともにシュー拡開方向に移動
してブレーキシューを拡開し、制動間隙を調整する機械
式ドラムブレーキにおいて、前記カム部材のカム部に前
□記カムカラーが嵌合するカムカラー溝を、制動時にブ
レーキドラム中心とカム軸中心とを結ぶ線に対して直交
するように傾斜させて形成したことを特徴とする機械式
ドラムブレーキの制動間隙自動調整装置。The drawings show one embodiment of the present invention, and Figure 1 is a front view;
Figure 2 is a sectional view taken along the line ■-■ in Figure 1, Figure 3 is a plan view, and Figure 4
5 is a cross-sectional view of the main part before adjustment of the brake gap, FIG. 5 is a cross-sectional view of the main part after adjustment of the brake gap, and FIG. 6 is a cross-sectional view of the main part showing the state in which the cam member is activated. '2. 2' is a brake shoe, 2b, 2b' is a knee web free end, 5 is a cam member 1, 5a is a cam portion 1, 9 and 9' are cam collar grooves, and 12.12' is a cam collar. Correction: October 1982. 5. The scope of claims for utility model registration shall be amended as follows. ◎Claim for Utility Model Registration A cam collar, which the free end of the shoe web comes into contact with, is fitted to the cam portion of a cam member that expands the brake shoes by the rotation of the brake arm, so as to be able to slide freely in the cam shaft direction. In a mechanical drum brake, the cam collar of the cam member is moved in the direction of the cam shaft and moved in the shoe expansion direction to expand the brake shoes and adjust the braking gap. Braking of a mechanical drum brake, characterized in that a cam collar groove into which the cam collar described above fits is formed at a slope perpendicular to a line connecting the center of the brake drum and the center of the camshaft during braking. Automatic gap adjustment device.

Claims

[Scope of utility model registration request]

The cam force caused by the free end of the shoe web coming into contact with the cam part of the cam member that expands the brake shoe due to the rotation of the brake arm? - is slidably fitted in the camshaft direction, and the cam collar is moved in the camshaft direction by the screwing action of the operating member screwed onto the cam member, and the brake shoe is also moved in the shoe expansion direction. In a mechanical drum brake that adjusts the braking gap by widening the cam member, the cam collar groove in which the cam collar fits into the cam part of the cam member is perpendicular to the line connecting the center of the brake drum and the center of the cam shaft during braking. An automatic braking gap adjustment device for a mechanical drum brake, characterized in that the braking gap is formed to be inclined so as to be inclined.