ELECTROMAGNETIC CLUTCH

摘要

An electromagnetic clutch has an inner ring portion which is formed in a cylindrical shape and holds a bearing on an inner surface thereof, and a friction portion which has a friction surface extending in the radial direction from the inner ring portion. The electromagnetic clutch has an outer ring portion which is arranged around the inner ring portion, and is formed in a cylindrical shape, and is joined to the friction portion. A joined portion which joins the outer ring portion and the friction portion is disposed between the outer ring portion and the friction portion. The joined portion is formed by the friction welding process.

主权项

1. An electromagnetic clutch for transmitting rotational force from a one side member to the other side member by using electromagnetic force, comprising:
an inner ring portion which is formed in a cylindrical shape and holds a bearing on an inner surface thereof; a friction portion which has a friction surface extending in a radial direction from the inner ring portion; an outer ring portion which is formed in a cylindrical shape, arranged to cover an outer periphery of the inner ring portion, and is joined to the friction portion; a pulley portion which provides the one side member and is formed integrally with the friction portion or the outer ring portion; a stator including an electromagnetic coil arranged between an outer surface of the inner ring portion, and an inner surface of the outer ring portion; and an armature which provides the other side member and is attracted to the friction portion by the electromagnetic force generated by the electromagnetic coil, and wherein the outer ring portion is joined to the friction portion by a joined portion formed by a friction welding process.