JPH0369564U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例を示す側面図、第２
図は第１図の−線に沿う断面図、第３図は第
１図の−線に沿う断面図である。 １……フロントシエル、２……リヤシエル、３
……パワーピストン、４……ダイアフラム、４ａ
……折返し部、４ｂ……外周ビード部、５……段
部、６ａ……小径筒状部、６ｂ……大径筒状部、
７……第１当接部、９……筒状支持部、１０……
第２当接部、１１……係合爪。 Figure 1 is a side view showing one embodiment of the present invention;
The figure is a sectional view taken along the - line in FIG. 1, and FIG. 3 is a sectional view taken along the - line in FIG. 1. 1...Front shell, 2...Rear shell, 3
...Power piston, 4...Diaphragm, 4a
...Folded portion, 4b...Outer peripheral bead portion, 5...Stepped portion, 6a...Small diameter cylindrical portion, 6b...Large diameter cylindrical portion,
7...First contact part, 9...Cylindrical support part, 10...
Second contact portion, 11... engaging claw.

Claims (1)

【実用新案登録請求の範囲】 フロントシエルの外周筒状部に段部を形成して
、その段部より後方側を大径筒状部、前方側をそ
れよりも小径の小径筒状部とするとともに、上記
大径筒状部に第１当接部を形成し、 またリヤシエルの外周にダイアフラムの外周ビ
ード部を支持する筒状支持部を形成するとともに
、この筒状支持部の後方側を半径方向外方に立上
げて上記第１当接部に当接する第２当接部を形成
し、 さらに上記筒状支持部の外周面で支持したダイ
アフラムの外周ビード部を上記大径筒状部内に嵌
合するとともに、上記第２当接部の前方端面を上
記第１当接部に当接させた倍力装置におけるシエ
ルの連結構造において、 上記第１当接部を、上記大径筒状部の円周方向
に相互に離隔した３箇所以上の位置で半径方向内
方に突出させた複数の突起から構成したことを特
徴とする倍力装置におけるシエルの連結構造。[Claims for Utility Model Registration] A stepped portion is formed on the outer peripheral cylindrical portion of the front shell, and the rear side of the stepped portion is a large diameter cylindrical portion, and the front side is a small diameter cylindrical portion smaller than the stepped portion. At the same time, a first contact portion is formed in the large diameter cylindrical portion, and a cylindrical support portion that supports the outer peripheral bead portion of the diaphragm is formed on the outer periphery of the rear shell, and the rear side of this cylindrical support portion is formed with a radius. forming a second abutting part that is raised outward in the direction and abutting the first abutting part, and further inserting an outer peripheral bead part of the diaphragm supported by the outer peripheral surface of the cylindrical support part into the large diameter cylindrical part. In a shell connection structure in a booster in which the front end surface of the second contact part is brought into contact with the first contact part, the first contact part is connected to the large diameter cylindrical part. 1. A shell connection structure in a booster, comprising a plurality of protrusions projecting radially inward at three or more positions spaced apart from each other in the circumferential direction.