| 摘要 |
To facilitate manufacture of casings of a stepping motor and simultaneously to enhance the performance thereof, a rotor (5) is mounted on a rotary shaft (1), the rotor (5) is supported to the casings (6) and (7) by pressing a metal plate, a bush (13) made of non-magnetic material is retained to at least one of the casings (6) and (7), and an inner circumferential portion of a stator core (10) provided between the casings (6) and (7) is supported by the bush (13). Since a gap between the outer circumferential portion of the rotor (5) and the inner circumferential portion of the stator core (10) may be kept constant by the bush (13), a performance of rotation is enhanced, and since the bush is made of non-magnetic material, magnetism generated in the stator core (10) does not leak to the casings (6) and (7). |
