| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a position detection device for a vehicle having a compact structure, capable of being manufactured at low cost, and capable of always detecting an absolute position of movement from a reference position, and a seat position detection device. <P>SOLUTION: The position detection device 14 detects a position of a vehicular movable body 3 which is moved by a driving force of a rotation drive source 70a. The position detection device has a reduction gear 50 and a rotation sensor 51. The reduction gear 50 has two-stage hypocycloid mechanisms 56, 57, 58, 59 for reducing the number of rotations of a rotating shaft 41, rotated a plurality of numbers of times by the drive source 70a when the movable body 3 is moved not more than one. The rotation sensor detects, as an absolute angle, a rotational output from the reduction gear. The position of the movable body is detected based on the absolute angle detected by the rotation sensor. <P>COPYRIGHT: (C)2009,JPO&INPIT |
