Patent ID: 7972093

Claim:
A one-way clutch device comprising: a ratchet member with a plurality of ratchets around the circumference thereof; a pawl seat provided rotatably around the exterior of the ratchet member; a pawl member provided rotatably on the pawl seat and having a pawl which engages with the ratchets by being biased against the ratchet member, characterized in that the pawl member is a resilient member having a first projection and the first surface therein, wherein the first surface is located at the second direction side of the first projection towards the second direction and forms a side of the first projection, the pawl member comprising: a pawl arm forming the pawl at the distal end thereof; a mounting and controlling arm provided with the first projection and the first surface; and pivot portion connecting between the pawl arm and the mounting and controlling arm and positioning radially the pawl member relative to the pivoting axis thereof, characterized in that the pivot portion is a circular ring structure formed by bending with a bending angle more than 180 degrees and less than 360 degrees; and a control outer sleeve provided rotatably around the pawl seat and having an integral or separate control member connected thereto, the control member has a control portion for engaging with the pawl member such that the pawl engages with the ratchet when the control outer sleeve is rotated in a first direction to a first position and disengages from the ratchet when the control outer sleeve is rotated in a second direction to a second position; characterized in that at least one of the control portion or the pawl member has a first surface which contacts the other one of the control portion or the pawl member such that the pawl member exerts a force towards the second direction on the control portion.