JPS648468U - - Google Patents

Description

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

第１図は、この考案の一実施例である圧縮空気
圧式倍力装置の断面図である。 １０……圧縮空気圧式倍力装置、２６……内孔
、２７……弁プランジヤ、３３……弁体、３４ａ
……供給弁座、３５……排気弁座、５７……シー
ルリング。 FIG. 1 is a sectional view of a compressed pneumatic booster which is an embodiment of this invention. 10... Compressed pneumatic booster, 26... Inner hole, 27... Valve plunger, 33... Valve body, 34a
...Supply valve seat, 35...Exhaust valve seat, 57...Seal ring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 内部空所を形成した本体と、内部空所に移動可
能に挿入され一方側に高圧室他方側に低圧室を区
分する可動体と、該可動体の一方側から本体を貫
通して外部に延びる筒部と、該筒部の内孔に外部
側から嵌合する入力部材と、前記内孔に連絡して
側部に形成される圧縮空気の供給孔と、前記内孔
に連絡して形成され高圧室に連絡する給気通路と
、前記内孔に連絡して形成される排気通路と、前
記入力部材からの入力に応じて作動し前記給気通
路の供給孔および排気通路に対する連通、遮断を
行なう弁装置とを有し、この弁装置が、前記内孔
に摺動自在に密嵌するとともに内孔の部分に形成
した弁座に着座可能な弁体と、前記入力部材と連
動して配置され前記弁体への対向部に弁座を形成
した弁プランジヤとを備え、弁体と内孔の部分の
弁座とによつて、供給孔と給気通路との連通、遮
断を行なう供給弁を、弁体と弁プランジヤの弁座
とによつて、給気通路と排気通路との連通、遮断
を行なう排気弁を各々構成するようにした圧縮空
気圧式倍力装置において、前記弁体と内孔の部分
の弁座との着座面積と、前記弁体と弁プランジヤ
の弁座との着座面積と、前記弁体の内孔への密嵌
部の断面積とを各々実質的に等しくした圧縮空気
圧式倍力装置。 a main body forming an internal cavity; a movable body that is movably inserted into the internal cavity and partitions a high pressure chamber on one side and a low pressure chamber on the other side; and a movable body that extends from one side of the movable body through the main body to the outside. a cylindrical portion; an input member that fits into an inner hole of the cylindrical portion from the outside; a compressed air supply hole formed in a side portion communicating with the inner hole; and a compressed air supply hole formed in a side portion communicating with the inner hole. an air supply passage that communicates with the high pressure chamber; an exhaust passage that communicates with the inner hole; and an air supply passage that operates in response to input from the input member to allow communication and isolation of the air supply passage with the supply hole and the exhaust passage. a valve device, the valve device being arranged in conjunction with a valve body that is slidably and tightly fitted into the inner hole and can be seated on a valve seat formed in the inner hole, and the input member. and a valve plunger with a valve seat formed in a portion facing the valve body, and the supply valve communicates with and shuts off the supply hole and the air supply passage by the valve body and the valve seat in the inner hole portion. In a compressed pneumatic booster in which the valve body and the valve seat of the valve plunger each constitute an exhaust valve that communicates with and shuts off the air supply passage and the exhaust passage, the valve body and the inner Compression in which the seating area of the hole portion with the valve seat, the seating area of the valve body and the valve plunger with the valve seat, and the cross-sectional area of the tightly fitting portion of the valve body into the inner hole are each substantially equal. Pneumatic booster.