Patent ID: 9709105
Date: 2017-07-18
CPC Classifications: F16D

Claim:
1. A clutch mechanism comprising: a driving-side rotatable body that is rotated by a rotational drive force, which is outputted from a drive source; a driven-side rotatable body, to which the rotational drive force is transmitted from the driving-side rotatable body through coupling of the driven-side rotatable body to the driving-side rotatable body; a permanent magnet that generates an attracting magnetic circuit, which generates a magnetic force for coupling between the driving-side rotatable body and the driven-side rotatable body, and a non-attracting magnetic circuit, which is different from the attracting magnetic circuit; a movable member that is made of a magnetic material and is displaceable; and an electromagnetic coil that generates an electromagnetic force for displacing the movable member, wherein: a first energization control arrangement that executes energization of the electromagnetic coil in such a manner that a magnetic force, which is generated from the non-attracting magnetic circuit, becomes larger than the magnetic force, which is generated from the attracting magnetic circuit, and thereby the movable member is displaced from the first position to the second position; a second energization control arrangement that executes energization of the electromagnetic coil in such a manner that the magnetic force, which is generated from the non-attracting magnetic circuit, becomes smaller than the magnetic force, which is generated from the attracting magnetic circuit, and thereby the movable member is displaced from the second position to the first position; a determining arrangement that determines whether the movable member has reached one of the first position and the second position; and an energization terminating arrangement that stops the energization of the electromagnetic coil when the determining arrangement determines that the movable member has reached the one of the first position and the second position.