Patent ID: 8220987
Filing Date: 2012-07-17
Classification: G04C,H01H

Abstract:
1. A rotation switch comprising: an operating member that is operable to rotate; a magnet member that rotates integrally with the operating member; a magnetic sensor that is placed operationally opposite to the magnet member; a magnetic shield plate having a frame shape that surrounds at least part of a periphery of the magnetic sensor; and a printed circuit board that is provided between the magnet member and the magnetic sensor such that the magnetic sensor is provided on a first surface of the printed circuit board which is opposite from a second surface of the printed circuit board that faces the magnet member, wherein the magnetic shield plate overall has a substantially flat, frame-shape and is attached to the first surface of the printed circuit board, and wherein an opening is provided in the magnetic shield plate, and the magnetic sensor is inserted in the opening without protruding through the opening from the magnetic shield plate.