Patent ID: 8151959
Filing Date: 2012-04-10
Classification: F16D

Abstract:
1. A one-way clutch unit having an unlocking and reverse rotation function and comprising a one-way clutch ( 2 ), an unlocking member ( 3 ), an input member ( 31 ), an output member ( 32 ) and a control member ( 23 ) that are coaxially assembled together, said one-way clutch ( 2 ) comprising an inner race ( 6 ), an outer race ( 7 ) fitted around said inner race so as to be rotatable relative to said inner race, said inner race ( 6 ) having a plurality of circumferentially spaced pockets ( 8 ) formed in a fitting surface thereof, each of said pockets having a bottom formed with a circumferentially inclined cam surface ( 14 ) defining a wedge space having a predetermined wedge angle (θ) in cooperation with a fitting surface of said outer race ( 7 ), rolling elements ( 15 ) each disposed on the cam surface ( 14 ) of one of said pockets, and biasing springs ( 16 ) each received in one of said pockets ( 8 ) between a first end of said pocket that faces a wide end of the wedge space having the predetermined wedge angle (θ) and said rolling element ( 15 ) and biasing said rolling element ( 15 ) toward a narrow end of the wedge spaces having the predetermined wedge angle (θ); wherein each of said pockets (