| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetic clutch improving reliability of an energization cut-off device by appropriately regulating a relative distance between a bimetal and a bridge wire part in an axial direction of the electromagnetic clutch.SOLUTION: The clutch has a bobbin 41 around which an electromagnetic coil 42 is wound for magnetic attraction between a rotor and an armature. The bobbin has an inner wall 41d and an outer wall 41e extending toward a bimetal direction in a facing manner, and an inside contact part (41g) and an outside contact part (41f), respectively provided extending from the side ends of extended portions of the inner wall 41d and the outer wall 41e toward opening edges on an inner peripheral side and an outer peripheral side of a ring case 43 accommodating the bobbin 41. The inside contact part 41f and the outside contact part 41g contact with the inner and outer side opening edges of the ring case 43, respectively, for positioning and accommodating the bobbin 41 in the ring case 43, and the bridge wire part 52 is looped about the inner wall 41d and the outer wall 41e at the same height position. |
