Patent ID: 8468991

Claim:
An electromagnetic-clutch rotation stopping structure for stopping the rotation of an electromagnetic clutch of a phase varying apparatus equipped with: a sprocket and a brake drum coaxially supported by the camshaft for relative rotation thereto and driven by the crankshaft of an automobile engine; an electromagnetic clutch cover ( 70 ) having a clutch holding section ( 71 c ) formed in the circumferential surface thereof coaxially with the camshaft; and a cylindrical electromagnetic clutch that is coaxial with the brake drum and adapted to put a brake on the brake drum as needed to change the phase angle between the camshaft and the crankshaft when stopped by the electromagnetic clutch cover unrotatable relative to the electromagnetic clutch cover, the electromagnetic-clutch rotation stopping structure is characterized by comprising: a substantially C-shaped leaf spring for holding the electromagnetic clutch in the same radial plane as the leaf spring mounted on the circumferential surface of the clutch holding section; first rotation stopping means provided between the electromagnetic clutch holding section and leaf spring; and second rotation stopping means provided between the leaf spring and electromagnetic clutch.