| 摘要 |
PROBLEM TO BE SOLVED: To reduce cost and upgrade assembling accuracy of a pulley unit having a one-way clutch built in it by reducing the number of part items and assembling manhours. SOLUTION: Both axial ends of the outer ring 11 of a one-way clutch 3 is extended and the extended portions 11a, 11b serve as the outer rings of roller bearings 4, 4. Raceway grooves (symbols omitted) serving as raceway tracks of rolling elements 22, 22 for the respective roller bearings 4, 4 are formed on the inner circumferential surface of both extended portions 11a, 11b of the outer ring 11 of the one-way clutch 3. By omitting the outer ring for the roller bearings 4, 4, fitting parts between an outside ring body 1 and roller bearings 4', 4 as well as the number of part items and assembling manhours are contrived to be reduced. |
