Patent ID: 6186298
Filing Date: 2001-02-13
Classification: F16D

Abstract:
A one-way clutch having a lock-up function, comprising:an outer race;an inner race radially spaced apart from said outer race and disposed within said outer race concentrically for relative rotation;a cam surface provided on one of an inner peripheral surface of said outer race and an outer peripheral surface of said inner race;a track surface provided on the other of the outer peripheral surface of said inner race and the inner peripheral surface of said outer race in a confronting relationship to said cam surface;a plurality of roller members disposed between said outer race and said inner race and adapted to transmit torque between said outer race and said inner race;springs biasing said roller members in one circumferential direction;at least one member holding said roller members and said springs at predetermined circumferential intervals; anda control member which acts on at least one of said roller members to effect lock-up control;wherein said control member controls said one-way clutch to lock up said one-way clutch in two rotational directions by urging said at least one roller member substantially radially of said one-way clutch into frictional engagement with the outer peripheral surface of said inner race or the inner peripheral surface of said outer race, and to lock up said one-way clutch in only one rotational direction by releasing said at least one roller member.