| 摘要 |
PROBLEM TO BE SOLVED: To provide a brushless DC motor which can be driven with maximum rotation efficiency even in normal rotation or reverse rotation. SOLUTION: In the brushless DC motor 15, a rotating shaft 56 consists of the first shaft 70 fixed to the rotor 50 and the second shaft 72 connected to the load side, and a detection magnet is fixed to the second shaft 72, and the second shaft 72 can rotate freely at a specified angle to the first shaft 70 so that the position of the detection magnet 74 may come to a position for normal rotation and a position for reverse rotation, and when the rotor 50 is rotating, the second shaft 72 is fixed in a position where it is rotated by a specified angle by the normal rotation of the first shaft, and when it is rotating reversely, the second shaft 72 is fixed in a position where it is rotated by a specified angle so that it may be in a reversal position by the reverse rotation of the first shaft 70. COPYRIGHT: (C)2004,JPO |
