JPH0294976U

JPH0294976U -

Info

Publication number: JPH0294976U
Application number: JP370089U
Authority: JP
Priority date: 1989-01-17
Filing date: 1989-01-17
Publication date: 1990-07-27
Anticipated expiration: 2004-01-17
Also published as: JPH067228Y2

Description

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

第１図は本考案の実施例の縦断側面図、第２図
は第１図のＡ―Ａ断面図、第３図は第２図の動作
状態を示す図、第４図はカムシヤフトの平面図、
第５図Ａはカムの正面図、Ｂは同側面図、第６図
は公知の切換弁の縦断側面図、第７図は第６図の
Ｂ―Ｂ断面図である。２５……供給弁座、２７……排出弁座、２８…
…弁体、３１……カムシヤフト、３１ａ……切欠
、３４……ピン、３５……カム、３６……Ｏリン
グ、３８……カム復帰ばね、Ｐ，Ａ，Ｒ……ポー
ト。 Fig. 1 is a vertical sectional side view of an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a diagram showing the operating state of Fig. 2, and Fig. 4 is a plan view of the camshaft. ,
5A is a front view of the cam, B is a side view thereof, FIG. 6 is a vertical side view of a known switching valve, and FIG. 7 is a sectional view taken along line BB in FIG. 6. 25... Supply valve seat, 27... Discharge valve seat, 28...
... Valve body, 31 ... Camshaft, 31a ... Notch, 34 ... Pin, 35 ... Cam, 36 ... O-ring, 38 ... Cam return spring, P, A, R ... Port.

Claims

【実用新案登録請求の範囲】圧力流体の入力ポート、出力ポート及び排出ポ
ートと、これらのポートを連通させる通路中の供
給弁座及び排出弁座と、これらの弁座を開閉する
弁体と、回動可能なカムシヤフトと、該カムシヤ
フトの切欠に変位可能に装着したカムと、該カム
をカムシヤフトに向けて付勢するカム復帰ばねと
を備え、カムシヤフトの回動で変位するカムによ
り排出弁座を供給弁体から出没させて、弁体が供
給弁座と排出弁座を開閉する３方向切換弁におい
て、上記カムに上記排出弁座を一体に形設するとと
もに、該排出弁座の外周をＯリングでシールし、上記カムシヤフトの切欠に、カムを変位させる
ためのピンを設けた、ことを特徴とする３方向切換弁。[Claim for Utility Model Registration] An input port, an output port, and a discharge port for pressurized fluid, a supply valve seat and a discharge valve seat in a passage that communicates these ports, and a valve body that opens and closes these valve seats; The camshaft is equipped with a rotatable camshaft, a cam displaceably mounted in a notch of the camshaft, and a cam return spring that biases the cam toward the camshaft. In a three-way switching valve that protrudes and retracts from a supply valve body to open and close a supply valve seat and a discharge valve seat, the discharge valve seat is integrally formed with the cam, and the outer periphery of the discharge valve seat is A three-way switching valve, characterized in that the valve is sealed with a ring, and a pin for displacing the cam is provided in the notch of the camshaft.