| 摘要 |
This rotation drive device (1) is provided with a housing (2), a rotor (100), and a drive means. The rotor (100) has first permanent magnets (110) which are arranged in the rotational direction, second permanent magnets (120) which are arranged in the rotational direction at intervals, and first magnetic bodies (140). Spaces (130) with predetermined intervals are formed between the magnetic poles (N-pole and N-pole, or S-pole and S-pole) of respective two of the second permanent magnets (120) that face each other such that the spaces face the partition wall sides (111) having the same magnetic poles (N-poles or S-poles) of the first permanent magnets (110). Further, the first magnetic bodies (140) are provided in the spaces (130). |
