| 摘要 |
PROBLEM TO BE SOLVED: To contribute to the reduction of cost, with good manufacture property, by forming a yoke for positional detection where a cut is made, and a pattern for positional detection which has first to fourth pattern parts on a board, and detecting the position of a rotor by this yoke for positional detection and the pattern for positional detection. SOLUTION: At a stator board 14, a pattern 22, which has signal fetch parts 23 and 24, a first pattern part 25, a second pattern part 26, a third pattern part 27, and a fourth pattern part 28, is made. The first pattern part 25 and the second pattern part 26 correspond to the section of rotation locus, and the third pattern part 27 and the fourth pattern part 28 are provided at the center. Between both these signal fetch parts 23 and 24, they are connected in the order of the third pattern part 27, the second pattern part 26, the first pattern part 25, and the fourth pattern part 28. |
