| 摘要 |
PURPOSE: A magnetic valve is provided to operate a specific device with single constitution. CONSTITUTION: A magnetic valve device comprises: a case(55); first and second passages(51,52) operating a cylinder by absorbing and exhausting air into the cylinder; third and forth passages(53,54) formed on the case for letting in and out air from the outside; an actuator(56) rotatably installed on the case for opening and closing the passages on demand. while the door is closed, the actuator rotates by an electrical signal for communicating the first and third passages then the second and forth passages are communicated so the air is allowed in and out. Thus, a piston inside a cylinder is pushed forward and the door is closed. When the door is opened, the actuator rotates for communicating the second and third passages so that the piston is pushed rearward and the door is opened.
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