Patent ID: 7845479

Claim:
An electromagnetic clutch comprising: a clutch hub connected to one of a pair of rotation members; a clutch housing connected to the other of the pair of rotation members; a rotor connected to the clutch housing; a clutch member disposed between the clutch hub and the clutch housing; and an electromagnet that operates the clutch member, wherein an end surface of the clutch housing and an end surface of a core of the electromagnet are disposed to be opposed to each other with the rotor interposed therebetween in an axial direction, wherein the rotor has an extension portion extending to the clutch housing in the axial direction at an end of the rotor on a side of the clutch housing, wherein the extension portion is connected to an outer periphery of the clutch housing through a connection portion, and wherein the connection portion is disposed outside the clutch member in a radial direction.