JPS60110166U - pneumatic booster - Google Patents

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

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

第１図は、本考案の一実施例を示す側麟面図、第２図は
、第１図の要部拡大図、第３図ａ９．−ｂ、　　ｃは、
第１図に示す前方シェル、ダイヤフラム及び後方シェル
を各々に分解した状態で表わした断面図である。　　　
　・ １・・・負圧式倍力装置、２・・・前方シェル、３・・
・後方シェル、５・・・可動体、−６・・・ダイヤフラ
ム、７・・・　−−変圧室、８・・・低圧室、３６・・
・外周ビード、３７・・・、内周ビード、３８・・・第
１部分、３９・・・折返し部分、４１・・・第２部分、
４２・・・段部、６０・・・内周面、Ｄ□・・・第１部
分の３８の外径、Ｄ２・・・段部４２の内径、Ｄ３・・
・内周面６０の内径。FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. 3 is a9. -b, c are
FIG. 2 is a cross-sectional view showing the front shell, diaphragm, and rear shell shown in FIG. 1 in an exploded state.
・ 1... Negative pressure booster, 2... Front shell, 3...
- Rear shell, 5... Movable body, -6... Diaphragm, 7... -- Transformer chamber, 8... Low pressure chamber, 36...
- Outer circumference bead, 37..., inner circumference bead, 38... first part, 39... folded part, 41... second part,
42...Step part, 60...Inner peripheral surface, D□...Outer diameter of 38 of the first portion, D2...Inner diameter of step part 42, D3...
- Inner diameter of inner peripheral surface 60.

Claims (1)

【実用新案登録請求の範囲】 前方シェルと後方シェルどの間にダイヤフラムの外周ビ
ードを挟圧して結合し、ダイヤフラムの内周ビードをシ
ェル内に移動自在に配置した可動、体に嵌着してダイヤ
フラムの前方側に低圧室、後方側に変圧室を各々区画し
、ダイヤフラムの前記両ビード間の中間部は、外周ビー
ドからシェルに。 沿９て前方側に延びる第１部分と、この第１部分から折
返し部分を経て後方側に延びる第２部分とを有し、ダイ
ヤフラムの外周ビードは、前方シェルに形成され内方に
向けて突出する段部に係合させた気圧式倍力装置におい
て、前記ダイヤフラムの第１部分の外周形状を、前記段
部の内周形状よりは大きく、前記前方シェルの内周形状
よりは小さくした気圧式倍力装置。[Claim for Utility Model Registration] A movable diaphragm in which the outer bead of the diaphragm is pressed between the front shell and the rear shell, and the inner bead of the diaphragm is movably disposed within the shell. A low pressure chamber is defined on the front side of the diaphragm, and a variable pressure chamber is defined on the rear side of the diaphragm, and the intermediate portion between the beads of the diaphragm extends from the outer peripheral bead to the shell. The diaphragm has a first portion extending forward along the axis 9, and a second portion extending rearward from the first portion via the folded portion, and the outer peripheral bead of the diaphragm is formed on the front shell and protrudes inward. In the pneumatic booster engaged with a stepped portion, the first portion of the diaphragm has an outer circumferential shape larger than an inner circumferential shape of the stepped portion and smaller than an inner circumferential shape of the front shell. booster.