| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulley with built-in clutch for accessory at a low cost. SOLUTION: A pair of bearings 13a, 13b are incorporated in between an internal member 11 mounted on a rotating shaft 2 of an alternator 1 and a belt guide ring 12 provided on its outside-diameter side. A one-way clutch 14 is incorporated in between the bearing 13a, 13b. Both ends of a space formed between the cylindrical outer surface 11a of the internal member 11 and the internal surface of the belt guide ring 12 is sealed with a pair of sealing members 24 to prevent the outside leakage of lubricating grease in the bearings 13a, 13b and the one-way clutch 14. A sealing member with excellent heat resistance is used in the sealing member 24 on alternator 1 side. A sealing member with low heat resistance is used in the sealing member 24 on non- alternator side, thereby attaining cost reduction for the pulley with built-in clutch. |
