JPS63171269U

JPS63171269U -

Info

Publication number: JPS63171269U
Application number: JP6610487U
Authority: JP
Priority date: 1987-04-28
Filing date: 1987-04-28
Publication date: 1988-11-08

Description

[Brief explanation of the drawing]

第１図は本考案の実施例であるエアオーバ・ハ
イドロリツク・ブースタの側断面図、及び第２図
は第１図における複弁装置の拡大側面図である。なお図において、１…エアオーバ・ハイドロリ
ツク・ブースタ、２…エアシリンダ部、４…シリ
ンダ・ケーシング、１４…第２のシリンダ・ピス
トン、２６，３２…圧力室、２９…第１のシリン
ダ・ピストン、３３…背室、３６…連結ロツド、
９０…弁体。 FIG. 1 is a sectional side view of an air-over-hydraulic booster according to an embodiment of the present invention, and FIG. 2 is an enlarged side view of the multiple valve device shown in FIG. 1. In the figure, 1... air over hydraulic booster, 2... air cylinder section, 4... cylinder casing, 14... second cylinder piston, 26, 32... pressure chamber, 29... first cylinder piston, 33...Back chamber, 36...Connection rod,
90... Valve body.

Claims

[Scope of utility model registration request]

A hydraulic cylinder in which a main pressure chamber and an auxiliary pressure chamber are partitioned by slidably inserting a hydraulic piston into a cylinder hole, and a hydraulic cylinder that allows liquid to move from the auxiliary pressure chamber side to the main pressure chamber side and vice versa. is a first valve that can be prohibited;
a second valve that prohibits liquid movement from the auxiliary pressure chamber to the hydraulic fluid reservoir below a predetermined pressure; a pneumatic body disposed coaxially with the hydraulic cylinder; and a second valve that is movable within the pneumatic body. a movable body that is inserted and partitions a pressure-free chamber on the side of the hydraulic cylinder and a pressure chamber into which compressed air is introduced on the opposite side; an intermediate output member that transmits to the hydraulic piston, a large diameter portion formed on the pressure chamber side of the pneumatic main body, and a second member that is movably inserted into the large diameter portion and has a pressure receiving area larger than the pressure receiving area of the movable body. a second movable body, a passage communicating with both sides of the second movable body, and a valve body that closes the passage when the second movable body has a predetermined stroke or less; In a pneumatically operated two-stage master cylinder configured to supply compressed air to a side opposite to the movable body, the valve body includes a main part that can close the passage, and a main part that connects the pneumatic main body from the main part. A pneumatic actuator, which has a shaft portion that protrudes freely to the outside in a slidable manner, and a stop portion provided on the protrusion portion of the shaft portion so that the mounting position can be changed, and is biased toward the second movable body by a spring. Type 2 stage master cylinder.