Pneumatic solenoid valve

Abstract

The invention relates to a pneumatic solenoid valve, comprising an electromagnetic actuator (6) and an air chamber (1) which is provided with multiple air connections (2, 3, 5) that can be connected with the interposition of the air chamber (1) via multiple switching positions of the magnetic actuator. The electromagnetic actuator can assume three different switching positions by energizing the actuator in a unipolar manner with three different current intensities. In a first switching position, a first sealing element (26) closes a first air connection (3), and a second sealing element (27) releases a second air connection (4). In a second switching position, the first sealing element (26) closes the first air connection (3), and the second sealing element (27) closes the second air connection (4). In a third switching position, the first sealing element (26) releases the first air connection (3), and the second sealing element (27) closes the second air connection (4). The first and second sealing element (26, 27) can be moved by the electromagnetic actuator via an actuation mechanism (11, 12, 24, 25, 28, 28′; 29, 30) in order to open and close the first and second air connection (3, 4), and the actuation mechanism (11, 12, 24, 25, 28, 28′; 29, 30) is designed such that only one of the first and second sealing element (27, 28) is moved when switching between the first and second switching position and when switching between the second and third switching position.

Dependencies are inferred from the claim text.