JPS6262078U - - Google Patents

Description

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

第１図は本考案による３ポートエア電磁弁の一
例示す断面図、第２図は従来の３ポートエア電磁
弁の一例を示す断面図である。 符号の説明、１０……弁体、１１ａ……供給ポ
ート、１１ｂ……負荷ポート、１１ｃ……排出ポ
ート、１１ｇ……第１弁座、１１ｈ……第２弁座
、２０……弁体、２１……第１ポペツト、２２…
…第２ポペツト、２３……連結ロツド、２４……
ピストン、３０……ばね、Ｖａ……主弁、Ｖｂ…
…パイロツト電磁弁、Ｒ１……パイロツト室、Ｒ
３……チヤンバ。 FIG. 1 is a sectional view showing an example of a 3-port air solenoid valve according to the present invention, and FIG. 2 is a sectional view showing an example of a conventional 3-port air solenoid valve. Explanation of symbols, 10... Valve body, 11a... Supply port, 11b... Load port, 11c... Discharge port, 11g... First valve seat, 11h... Second valve seat, 20... Valve body, 21...1st poppet, 22...
...Second poppet, 23...Connection rod, 24...
Piston, 30... Spring, Va... Main valve, Vb...
...Pilot solenoid valve, R1...Pilot chamber, R
3... Chiyamba.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 空気圧源に接続される供給ポートとアクチユエ
ータに接続される負荷ポートを連通する通路中に
設けられる第１弁座と前記負荷ポートと大気に連
通する排出ポートを連通する通路中に設けられる
第２弁座を同軸的に設けてなる弁本体と、同弁本
体内に前記両弁座と同軸的かつ軸方向へ移動可能
に組付けられて一方向へばね付勢され一方向移動
端にて前記第１弁座に着座する第１ポペツトと同
第１ポペツトに連結体を介して連結されて他方向
移動端にて前記第２弁座に着座する第２ポペツト
と同第２ポペツトに一体的に設けられて背部にパ
イロツト室を形成するピストンからなる弁体とに
よつて構成された主弁を備えるとともに、前記パ
イロツト室を前記供給ポート又は大気に選択的に
連通させるパイロツト電磁弁を備えてなる３ポー
トエア電磁弁において、前記第１ポペツトの背部
に前記パイロツト室に対向しかつ前記負荷ポート
にのみ常時連通するチヤンバを同軸的に設けると
ともに、同チヤンバ内に前記弁体の一部を延出し
て露呈させたことを特徴とする３ポートエア電磁
弁。 A first valve seat provided in a passage communicating between a supply port connected to an air pressure source and a load port connected to the actuator, and a second valve provided in a passage communicating between the load port and a discharge port communicating with the atmosphere. a valve body having a seat coaxially provided therein; and a valve body that is assembled within the valve body so as to be movable in the axial direction coaxially with both the valve seats, and is biased by a spring in one direction, and the valve body is assembled with the valve body so as to be movable in the axial direction, and is biased in one direction by a spring. A first poppet seated on the first valve seat, a second poppet connected to the first poppet via a connecting body and seated on the second valve seat at a moving end in the other direction, and integrally provided on the second poppet. 3, comprising a main valve constituted by a valve body consisting of a piston and a valve body formed by a piston forming a pilot chamber at the back thereof, and a pilot solenoid valve for selectively communicating the pilot chamber with the supply port or the atmosphere. In the port air solenoid valve, a chamber is coaxially provided at the back of the first poppet, facing the pilot chamber and always communicating only with the load port, and a part of the valve body is extended and exposed within the chamber. A 3-port air solenoid valve characterized by: