JPS63182965U

JPS63182965U -

Info

Publication number: JPS63182965U
Application number: JP7482287U
Authority: JP
Priority date: 1987-05-19
Filing date: 1987-05-19
Publication date: 1988-11-25
Also published as: JPH0352598Y2

Description

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

第１図は、本考案の実施例の気圧式倍力装置の
縦断面図、第２図は、第１図の―線断面図、
第３図ａ，ｂは、夫々本考案の他の実施例を示す
要部縦断面図、第４図および第５図は、従来の気
圧式倍力装置における組付手段を示す要部縦断面
図、である。１０……気圧式倍力装置、１１……フロントシ
エル、１２……リアシエル、１３……本体、１４
……パワーピストン、１４ａ……パワーピストン
の内周端、１５……ダイヤフラム、１５ｂ……ダ
イヤフラムの内周端部、１６……バルブボデイ、
１７……フランジ部、１９……入力軸、２１……
出力軸、２４……溝、２５……貫通孔、２６……
抜け止め突部。 FIG. 1 is a longitudinal cross-sectional view of a pneumatic booster according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line -- in FIG.
FIGS. 3a and 3b are longitudinal cross-sectional views of main parts showing other embodiments of the present invention, and FIGS. 4 and 5 are longitudinal cross-sectional views of main parts showing assembly means in a conventional pneumatic booster. Figure. 10...Pneumatic booster, 11...Front shell, 12...Rear shell, 13...Main body, 14
...Power piston, 14a...Inner peripheral end of power piston, 15...Diaphragm, 15b...Inner peripheral end of diaphragm, 16...Valve body,
17...Flange part, 19...Input shaft, 21...
Output shaft, 24...Groove, 25...Through hole, 26...
Retaining protrusion.

Claims

【実用新案登録請求の範囲】フロントシエルとリアシエルとから形成される
本体の内部を、バルブボデイに取付けられたダイ
ヤフラムおよびパワーピストンでフロントシエル
側の負圧室とリアシエル側の変圧室とに画成する
とともに、前記バルブボデイに取付けられた入力
軸を作動させて前記負圧室と変圧室とに差圧を生
じさせることにより、前記パワーピストンに生じ
る推力を出力軸に伝達する気圧式倍力装置におい
て、前記バルブボデイの前端に形成されているフラ
ンジ部の側部に同心円状の溝を形成し、該溝に前
記ダイヤフラムの内周端部を嵌合させ、前記パワ
ーピストンの内周端で該ダイヤフラムの内周端部
を溝内に保持するとともに、前記溝の底部にバル
ブボデイの軸方向の貫通孔を穿設し、該貫通孔に
挿通して先端部を折曲した抜け止め突部を前記パ
ワーピストンに設けたことを特徴とする気圧式倍
力装置。[Claim for Utility Model Registration] The interior of the main body formed by a front shell and a rear shell is divided into a negative pressure chamber on the front shell side and a variable pressure chamber on the rear shell side by a diaphragm and a power piston attached to the valve body. Also, in a pneumatic booster that transmits thrust generated in the power piston to an output shaft by operating an input shaft attached to the valve body to generate a pressure difference between the negative pressure chamber and the variable pressure chamber, A concentric groove is formed on the side of the flange portion formed at the front end of the valve body, and the inner peripheral end of the diaphragm is fitted into the groove, so that the inner peripheral end of the power piston is connected to the inner peripheral end of the diaphragm. While holding the peripheral end in the groove, a through hole in the axial direction of the valve body is bored at the bottom of the groove, and a retaining protrusion with a bent tip is inserted into the through hole and attached to the power piston. A pneumatic booster characterized by the provision of a pneumatic booster.