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1. (WO2017060090) PNEUMATIC SOLENOID VALVE

Pub. No.:    WO/2017/060090    International Application No.:    PCT/EP2016/072439
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Thu Sep 22 01:59:59 CEST 2016
IPC: H01F 7/14
H01F 7/08
H01F 7/12
Applicants: CONTI TEMIC MICROELECTRONIC GMBH
Inventors: BEUSCHEL, Michael
ZIEGELMEIER, Markus
BAUER, Stefan
KERLER, Alexander
KOLBINGER, Martin
FERNENGEL, Holger
Title: PNEUMATIC SOLENOID VALVE
Abstract:
The invention relates to a pneumatic solenoid valve comprising an air chamber (1), on which multiple air connections (2, 3, 5) are provided which can be connected via multiple switching positions of the solenoid valve by interconnecting the air chamber (1). The solenoid valve comprises a magnetic coil (6), a yoke (8) which is arranged on the magnetic coil (6) and made of soft magnetic material, and an armature (9) which can move relative to the yoke (8) and is made of soft magnetic material. The magnetic coil (6), the yoke (8) and the armature (9) are arranged within the air chamber (1). The armature (9) is arranged with respect to the yoke (8) such that, when the magnetic coil (6) is fed with current, said armature rotates about a single axis of rotation (A), by means of the magnetic force generated as a result, against a restoring force until the magnetic force corresponds to the restoring force. When the armature (9) rotates, the size of at least one overlapping region between the yoke (8) and the armature (9) changes, wherein an air gap (L, L') is formed between the yoke (8) and the armature (9) in the at least one overlapping region. The distance formed by the air gap (L, L') between the yoke (8) and the armature (9) remains substantially constant in the direction of rotation of the armature (9).