Patent ID: 8047347

Claim:
A one-way clutch comprising: an outer diameter-sided member having an inner peripheral face; an inner diameter-sided member having an outer peripheral face opposed in a radial direction to said inner peripheral face; and a plurality of torque transmitting members interposed between said inner peripheral face of said outer diameter-sided member and said outer peripheral face of said inner diameter-sided member and disposed in an inclinable manner selectively between a position for transmitting torque by engaging with said inner peripheral face and said outer peripheral face and a position in which to be in a non-engagement state with said inner peripheral face and said outer peripheral face; a spring member for biasing said plurality of torque transmitting members in such a direction as to engage with said inner peripheral face and said outer peripheral face; and a cylindrical inner retainer and a cylindrical outer retainer holding said plurality of torque transmitting members at predetermined intervals in a circumferential direction and restraining an inclination of said torque transmitting members, said outer retainer including a pair of annular portions facing each other in an axial direction and a plurality of column members disposed at predetermined intervals and connecting said pair of annular portions in the axial direction, one of the annular portions being formed with a radially outwardly extending flange at an outer axial end thereof, a plurality of window portions being configured by faces, opposite to each other in a circumferential direction, of said column members neighboring each other and by faces, opposite to each other in the axial direction, of said pair of annular portions, elastic members being formed by cutting portions of predetermined ones of said column members and bending outward in the radial direction the cut portions, on the flange side, of said predetermined ones of said column members, said one annular portion being formed with a plurality of paired cut-away portions in predetermined positions, said elastic members being disposed between corresponding pairs of cut-away portions, determined portions of said one annular portion between corresponding pairs of cut-away portions being enlarged in diameter, and an outer diametrical face of each said elastic member being in sliding-contact with said inner peripheral face of said outer diameter-sided member, wherein between at least one of said elastic members and at least one of said cut-away portions adjacent to said elastic member in the circumferential direction there are at least three of said window portions, inclusive of a window portion continuous to the at least one cut-away portion.