Patent ID: 6811009
Filing Date: 2004-11-02
Classification: F16D,H02K

Abstract:
A magnet type fan clutch apparatus including an electromagnetic clutch formed of a clutch rotor supported rotatably on a non-rotatably fixed shaft via a bearing, an exciting coil mounted fixedly on the fixed shaft and provided in the clutch rotor, and an armature longitudinally movably held on a rear surface of a permanent magnet rotary body that is supported rotatably via a bearing on the fixed shaft and being on a side of the exciting coil; and a magnet coupling which is formed of the permanent magnet rotary body supported rotatably on the fixed shaft via a bearing, and a disc, to which a fan is fixed, provided with a conductor opposed to the permanent magnet rotary body with a narrow clearance left therebetween, and which is formed so that the permanent magnet rotary body and disc are rotated together owing to an attraction working between the permanent magnet rotary body and the conductor, the magnet coupling being ON/OFF controlled by the electromagnetic clutch.