Patent ID: 8127906
Filing Date: 2012-03-06
Classification: F16D

Abstract:
1. A clutch drive device, comprising: a clutch; an actuator generating a drive force for engaging or disengaging the clutch; a drive force transmission mechanism for transmitting the drive force of the actuator to the clutch, the mechanism including a solid of revolution configured to rotate in a first direction when the clutch is being disengaged and a second, opposite direction when the clutch is being engaged; and an auxiliary elastic body having a first end pivotally supported and a second end biased away from the first end and abutting on the solid of revolution via an abutment structure comprising abutting surfaces provided on the solid of revolution and the auxiliary elastic body, respectively, wherein the auxiliary elastic body urges the solid of revolution via the abutment structure in a direction of disengaging the clutch while the clutch transitions to a disengaged state from a meet point of the clutch, wherein a play area is positioned from where the clutch is engaged to the meet point; and wherein the abutment structure is configured so that a biasing force of the auxiliary elastic body does not act in a direction of rotating the solid of revolution at least at two positions or in the entire play area while the solid of revolution rotates in the play area in which the clutch is not disengaged.