| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electromagnetic clutch which can suppress effect of remanence of an electromagnetic coil during non-energization, and reduce power consumption during energization of the electromagnetic coil. <P>SOLUTION: The electromagnetic clutch 1 includes: an annular electromagnetic coil 2 for generating magnetic flux by energization; a yoke 3 for passing the magnetic flux of the electromagnetic coil 2 therethrough; a first opposing part 41 for opposing to the yoke 3 in the axial direction on the outer circumference side of the electromagnetic coil 2; and an armature cam 4 having a second opposing part 42 opposing to the yoke 3 in the axial direction on the inner circumference side of the electromagnetic coil 2. In the armature cam 4, at least one of the first opposing part 41 and the second opposing part 42 contacts with the yoke 3 by the energization to the electromagnetic coil 2, and a region having lower magnetic permeability than the armature cam 4 and the yoke 3 is formed in a magnetic path M of the magnetic flux generated by the energization to the electromagnetic coil 2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
