JPS5811149U

JPS5811149U - Braking gap automatic adjustment device for mechanical drum brakes

Info

Publication number: JPS5811149U
Application number: JP10529881U
Authority: JP
Inventors: 出沢　功
Original assignee: 日信工業株式会社
Priority date: 1981-07-15
Filing date: 1981-07-15
Publication date: 1983-01-24
Also published as: JPS6027231Y2

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図は平面図、第５図はカム部材、カムカラーく弾性変
形部材、作動部材、ワッシャー、アジャストギアおよび
アジャストレバーの分解斜視図である。２．２′はブレーキシュー、５はカム部材、５ａはカム
部、１０は作動部材挿通孔、１１は環゛状溝、１２は弾
性変形部材、１３は作動部材、１３ａはストレート軸部
、１３ｂは左ねじ軸部、１６はアジャストギア、２３は
アジャストレバーである。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。Ｏ実用新案登録請求の範囲１　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
部材に挿通したアジャストボルトの軸部に螺合したアジ
ャストギアを、制動時に回転してアジャストボルトをカ
ム軸のアジャスト方向に移動し、カムカラーによりブレ
ーキシューを拡開して制動間隙を調整する機械式ドラム
ブレーキにおいて、前記カム部材のアジャストボルト挿
通孔に前記アジャストボルトの軸部をゴム等の弾性変形
部材を介して挿通し、この弾性変形部材に弾性変形を与
え、アジャストボルトをカム部材と一体に回転せしめる
とともに、アジャストボルトを非アジャスト方向に付勢
せしめ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。２　前記弾性変形部材を前記カム部材のアジャストボル
ト挿通孔入口端に形成した環状溝に嵌合したことを特徴
とする実用新案登録請求の範囲第１項記載の機械式ドラ
ムブレーキの制動間隙自動調整装置。３　前記弾性変形部材を前記アジャストボルトの軸部に
形成した環状溝に嵌合したことを特徴とする実用新案登
録請求の範囲第１項記載の機は式ドラムブレーキの制動
間隙自動調整装置。図面の簡単な説明を次のように補正する。明細書第１７頁第３〜４行の「作動部材・・・・・・ア
ジャストレバー」を「アジャストレバー、ワッシャー、
アジャストギアおよびストッパレバー」と補正する。明細書第１７頁第７行の「作動部材挿通孔」を「アジャ
ストボルト挿通孔」と補正する。明細書第１７頁第８行の「作動部材」を［アジヤス　゛
トボルト」と補正する。明細書第１７頁第１０行の「アジャストレバー」を「ス
トッパレバー」と補正する。The drawings show one embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a rear view, FIG. The figure is an exploded perspective view of a cam member, a cam collar elastic deformation member, an operating member, a washer, an adjustment gear, and an adjustment lever. 2.2' is a brake shoe, 5 is a cam member, 5a is a cam portion, 10 is an operating member insertion hole, 11 is an annular groove, 12 is an elastic deformation member, 13 is an operating member, 13a is a straight shaft portion, 13b 16 is an adjustment gear, and 23 is an adjustment lever. Correction: October 1982. 5. The scope of claims for utility model registration shall be amended as follows. O Utility Model Registration Claim 1 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 rotation of the brake arm, so as to be able to slide freely in the cam shaft direction. A mechanical system in which an adjustment gear screwed onto the shaft of an adjustment bolt inserted through a member is rotated during braking to move the adjustment bolt in the adjustment direction of the camshaft, and a cam collar spreads the brake shoes to adjust the braking gap. In the drum brake, the shaft portion of the adjustment bolt is inserted into the adjustment bolt insertion hole of the cam member via an elastically deformable member such as rubber, and the elastically deformable member is elastically deformed to integrate the adjuster bolt with the cam member. An automatic braking gap adjustment device for a mechanical drum brake, characterized in that the adjustment bolt is rotated and biased in a non-adjustment direction. 2. Automatic braking gap adjustment of a mechanical drum brake according to claim 1, wherein the elastic deformation member is fitted into an annular groove formed at the entrance end of the adjustment bolt insertion hole of the cam member. Device. 3. An automatic braking gap adjustment device for a mechanical drum brake according to claim 1, wherein the elastic deformation member is fitted into an annular groove formed in the shaft of the adjustment bolt. The brief description of the drawing has been amended as follows. "Operating member...adjustment lever" on page 17, lines 3-4 of the specification is replaced with "adjustment lever, washer,
Adjustment gear and stopper lever”. "Operating member insertion hole" on page 17, line 7 of the specification is corrected to "adjustment bolt insertion hole.""Operatingmember" on page 17, line 8 of the specification is amended to read "adjustment bolt.""Adjustlever" on page 17, line 10 of the specification is corrected to "stopper lever."

Claims

[Scope of Claim for Utility Model Registration] 1. A cam collar, which the free end of the shoe web contacts, is slidably fitted in the cam shaft direction to the cam portion of the cam member that expands the brake shoes by rotation of the brake arm, A machine that adjusts the braking gap by rotating an adjustment gear screwed onto the shaft of an operating member inserted through the cam member during braking to move the operating member in the adjustment direction of the camshaft, and by expanding the brake shoes using a cam collar. In the type drum brake, the shaft portion of the actuating member is inserted into the actuating member insertion hole of the cam member through an elastically deformable member such as rubber, elastically deformed to the elastically deformable member, and the actuating member is integrated with the cam member. 1. An automatic braking gap adjustment device for a mechanical drum brake, characterized in that the braking gap is rotated in the opposite direction and the actuating member is biased in a non-adjustment direction. 2. The automatic braking gap for a mechanical drum brake according to claim 1, wherein the elastically deformable member is fitted into an annular groove formed at the entrance end of the operating member insertion hole of the cam member. Adjustment device. 3. The automatic braking gap adjustment device for a mechanical drum brake according to claim 1, wherein the elastically deformable member is fitted into an annular groove formed in the shaft portion of the actuating member.