Patent ID: 6452119
Filing Date: 2002-09-17
Classification: H01H,H03K

Abstract:
A rotary switch with mechanical keying function, comprising a sensing unit that cooperates with a coding disk that helps evaluate signals, which is fixed to a rotatable driver, and comprising a stator and a shaft, which allows turning of the driver, the keying function being realized by a ring magnet which is fixed to the stator, by an upper disk of ferromagnetic or soft magnetic material, which is embedded in the driver and by latch elements which are moved by guides of the driver on a circumferential trace of the stator, whereby one of latch recesses or depressions are on the circumferential trace and whereby the ring magnet and the guides are forcing the latch elements along the circumferential trace and into the depressions for positioning the coding disk and driver by magnetic forces of the ring magnet.