| 摘要 |
PURPOSE:To prevent damage to a motor without impulsive force at the time of braking release by arranging semicircular arc braking members between a circular braked substance fixed on a rotary shaft juxtaposed with a rotor and the inner circumference of a stator wherein braking release is applied by utilizing stator magnetic flux. CONSTITUTION:A circular braked substance 25 is fixed on a rotary shaft 12 by putting a rotor 5 side by side. And a pair of simicircular arc braking members 27 having magnetic substances 26 at the rear side are arranged between the braked substance 25 and the inner circumference surface of a stator core 3 and the magnetic substances 26 and the stator core 3 are movably engaged by a rotary-proof members 24 in the radius direction. Furthermore, elastic substance 28 are mounted between the end sections of the facing magnetic substances 26 to contact the backing members 26 with the braked substance 25 at the time of stationary condition. In this status, with current supplied to the stator and the rotor 5 being started, the magnetic substances 27 mounted on the braking members by the magnetic flux of the stator core are absorbed to the stator core 3 side and braking release can be applied without impulsion. |
