Patent ID: 7065829
Filing Date: 2006-06-27
Classification: B60R,E05F,E05Y,Y10T

Abstract:
1. A damper device for applying damping force to a movable body movably attached to a fixed body, comprising: a rack part movable together with the movable body and having an engaging part, a damping part having a first part and a second part both being rotatable around an axis, and viscous fluid for providing damping force to the axis, one of said first part and the second part being rotatable with the other of the first part and the second part for bearing, said first part having a pinion part for engaging the engaging part of the rack part and said second part having a gear on an outer periphery thereof, and a clutch case attached to one of the fixed body and the movable body, and having a receiving space for retaining the damping part to be rotatable therein and a coupling projection for engaging the gear of the second part, said receiving space having a first inner diameter, extending in a first direction along a movement of the rack part, larger than an outer diameter of the second part of the damping part and a second inner diameter, extending in a second direction perpendicular to the first direction, substantially equal to an outer diameter of the second part of the damping part, said coupling projection engaging the gear of the second part so that only the first part rotates to generate the damping force when the rack part moves in one direction along the first direction, said coupling projection being disengaged from the gear of the second part when the rack part moves in a direction opposite to said one direction.