| 摘要 |
<p>PURPOSE:To eliminate slip of a clutch by changing-over an individual operation of an exciting coil to parallel operation at the rotational frequency about torsional resonance point of a shaft. CONSTITUTION:When an electric current is applied to an exciting coil 4, a starting exciting coil 401 and an steady-state exciting coil 402 are operated parallel, and a close magnetic path S is formed among a stator 1, an input rotor 2 and an armature 10, thereby to generate sucking force between a friction plate 204 of the input rotor 2 and the armature 10, so that the armature 10 is adsorbed to the friction plate 204 against the force of a plate spring 902. When the starting state is completed, only a steady-state exciting coil 402 is individually operated by a delay circuit 13, so that the turning force of the armature 10 is transmitted to a rotary shaft 8 through a plate spring 902, an output rotor 901 and a hub 9.</p> |
