PURPOSE: To provide a magnetic rotation sensor comprising a core, a magnet, a yoke, and a lead terminal integrally molded of a synthetic resin forming a bobbin in which the magnet and the yoke are prevented from shifting or touching the lead terminal due to the molding pressure.
CONSTITUTION: In a magnetic rotation sensor 10 comprising a yoke 3, a magnet 2, and a core 1 integrally molded of a synthetic resin 6 forming a bobbin, a tubular member 5 is applied to the yoke 3 and the magnet 2 or to the yoke 3, magnet 2, and the core 1 and positioned thus preventing positional shift thereof at the time of molding. Since the magnet 2 and the yoke 3, which can not be secured using a mold because of their structure, can be secured by means of the tubular member 5 and the magnetic force of the magnet 2, the magnet 3 and the yoke 2 can be prevented from shifting or touching the lead terminals 4a, 4b due to the molding pressure.
| JP2001264110 | MECHANICAL AXLE WITH BUILT-IN MAGNET DEVICE |
| JP3723716 | ROTARY ENCODER |
KIKUCHI KATSUHIKO
KAWAKAMI KAZUHIKO
HITACHI AUTOMOTIVE ENG