Conti Temic Microelectronic Gmbh

Markus Ziegelmeier

Michael Beuschel

Stefan Bauer

Alexander Kerler

Holger Fernengel

Mehmet Cini

Martin Kolbinger

A pneumatic valve, includes an air chamber, a connector for supplying compressed air to the air chamber and one or more connectors for discharging compressed air from the air chamber. The valve includes an actuator with a mobile closure element which, when the actuator is activated, blocks the supply of compressed air via the supply connector, and when the actuator is deactivated, is arranged to permit the supply of compressed air via the supply connector. The actuator is configured such that the closure element, on deactivation of the actuator, is moved by a restoring force into the free position. A check valve with a spring is arranged at the supply connector. The elastic force of the spring in the free position of the closure element prevents back-flow of compressed air from the air chamber into the supply connector when there is no supply of compressed air at the supply connector.

Pneumatic valve

Disclosed is a pneumatic solenoid valve comprising an air chamber with multiple air connections which can be connected via multiple switching positions of the valve by interconnecting the air chamber. The valve comprises a magnetic coil, a yoke arranged on the coil, and an armature arranged about the yoke and able to move relative to the yoke, all within the air chamber. When the coil is energized, the magnetic force generated rotates the armature about a single axis of rotation against a restoring force, until the magnetic force corresponds to the restoring force. When the armature rotates, the size of at least one overlapping region between the yoke and the armature changes, wherein an air gap is formed between the yoke and the armature. The distance of the air gap between the yoke and the armature remains substantially constant in the direction of rotation of the armature.

Pneumatic solenoid valve

The invention relates to a method for monitoring the pressure in a device for the pneumatic adjustment of a seat in a transportation means, in particular in a motor vehicle. The device comprises a plurality of cushions () which are able to be filled with air and which are connected via respective valves () to a common preliminary pressure volume (), wherein a pressure sensor () is provided for measuring the pressure (p) in the preliminary pressure volume () and the preliminary pressure volume () is coupled to a compressor () for supplying compressed air without a non-return valve being connected therebetween. For the purpose of monitoring the pressure in a respective cushion (), a predefined pressure is set in the preliminary pressure volume by way of operation of the compressor () and/or by way of air discharge from the preliminary pressure volume () via at least one leak, with the valve () between the respective cushion () and the preliminary pressure volume () closed, wherein the predefined pressure deviates from a target pressure (p, p, . . . , p) in the respective cushion () by at most 10% of the target pressure and/or at most 50 hPa. After the setting of the predefined pressure, the valve () between the respective cushion () and the preliminary pressure volume () is opened and the pressure in the preliminary pressure volume () is measured via the pressure sensor (). If the measured pressure (p) deviates from the target pressure (p, p, . . . , p), the measured pressure (p) is set to the target pressure (p, p, . . . , p) by way of operation of the compressor () and/or by way of air discharge from the preliminary pressure volume () via the at least one leak.

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Buxheim, Germany

Markus Ziegelmeier