| 摘要 |
<p>A position detection structure for detecting movement toward two mutually separated positions in a moving object (20) that moves relative to a base (48), wherein movement of the moving object toward the two mutually separated positions is detected by a single sensor with positional distinction and without detection error. A detection sensor (50) is provided at one of the two positions on one side of the location where the base (holder) (48) and the moving object (platform) (20) face each other, and the detection sensor generates a different electrical signal at each position. Since a single detection sensor generates a different signal at each of the two positions, movement of the moving object toward the two positions can be detected with positional distinction by a single sensor.</p> |
