JPS6412977U

JPS6412977U -

Info

Publication number: JPS6412977U
Application number: JP10545587U
Authority: JP
Priority date: 1987-07-08
Filing date: 1987-07-08
Publication date: 1989-01-24

Description

[Brief explanation of the drawing]

第１図はこの考案による空気圧式アクチユエー
タの一実施例を示す縦断面図、第２図は第１図の
アクチユエータを外部カバー及びフイルタは外し
て示す側面図、第３図は従来の空気圧式アクチユ
エータの縦断面図、第４図は第３図のアクチユエ
ータを押付け板及び端カバーは外して示す側面図
、第５図は第３図の吸気用電磁弁の縦断面図であ
る。３１……ハウジング、３２……ダイヤフラム、
３４……押え板、３５……連結金具、３６……外
部ケース、３７……圧縮ばね、３８……ダイヤフ
ラム室、３９……吸気用電磁弁、３９ｅ……固定
鉄心、３９ｆ……プランジヤ、３９ｈ……弁ばね
、４０……大気導入穴、４１……排気用電磁弁、
４２……負圧排気口、５０……外部カバー。なお
、図中同一符号は同一又は相当部分を示す。 Fig. 1 is a longitudinal sectional view showing an embodiment of the pneumatic actuator according to this invention, Fig. 2 is a side view of the actuator shown in Fig. 1 with the external cover and filter removed, and Fig. 3 is a conventional pneumatic actuator. 4 is a side view showing the actuator of FIG. 3 with the pressing plate and end cover removed, and FIG. 5 is a longitudinal sectional view of the intake solenoid valve of FIG. 3. 31...Housing, 32...Diaphragm,
34... Holding plate, 35... Connecting metal fittings, 36... External case, 37... Compression spring, 38... Diaphragm chamber, 39... Intake solenoid valve, 39e... Fixed iron core, 39f... Plunger, 39h ... Valve spring, 40 ... Atmosphere introduction hole, 41 ... Exhaust solenoid valve,
42... Negative pressure exhaust port, 50... External cover. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

The front end portion, which is housed in the housing and the outer case and is clamped to a retaining plate from which a connecting fitting is protruded, is supported so as to be able to move forward and backward, and is pressed in the forward direction by a compression spring to form a diaphragm chamber. a diaphragm, a pair of intake solenoid valves that are communicated with the atmosphere and open and close a passage to the diaphragm chamber, and an exhaust solenoid valve that is communicated with a negative pressure suction source and that opens and closes a passage to the diaphragm chamber. In the pneumatic actuator, each of the above-mentioned solenoid valves is controlled by a control circuit, and the above-mentioned intake solenoid valve has a valve spring that presses the plunger, and an atmospheric pressure that passes through the center of the fixed core in the axial direction. A pneumatic actuator, which is passed through an introduction hole and installed between an external cover that covers each of the solenoid valve sections and the plunger.