摘要:
A rotary switch of the present invention includes an operating member, a magnet member, and a magnetic sensor. The operating member is operable to move from outside of the case to first and second positions in the axial direction and operable in a rotation direction, and an engaging section is formed in a predetermined area thereof. The magnet member is provided in such a manner not to move in the axial direction of the operating member, and has formed therein an engaging hole. The magnetic sensor detects rotation of the magnet member. In this rotary switch, when the operating member is moved in the axial direction, the engaging section moves inside the engaging hole with the engaging section being engaged with the engaging hole, and when the operating member is rotated, the magnet member rotates therewith.
摘要:
A rotation switch includes an operating member that is operable to rotate, a magnet member that rotates integrally with the operating member, a magnetic sensor that is placed opposite to the magnet member, and a frame-shaped anti-magnetic shield plate that surrounds the periphery of the magnetic sensor.
摘要:
A radio wave receiving device includes at least one magnetic drive unit and an antenna structure having a narrow core formed of magnetic material and a coil wound around the central part of the core. The device further includes two external magnetic members, each having a connecting part connected magnetically to one end part of the core. One magnetic member has a magnetism collecting part expanded in one side of the antenna structure from the connecting part to exclude the antenna structure, and the other magnetic member has a magnetism collecting part expanded in the other side of the antenna structure from the connecting part to exclude the antenna structure. These external magnetic members cover the drive unit in the both sides and shut off magnetic flux of external magnetic field from the both sides and collect magnetic flux of radio wave on the one end part of the core.