Patent ID: 8132658
Filing Date: 2012-03-13
Classification: B60N,F16D

Abstract:
1. A seat having a seat adjustment device for performing position adjustment on a seating seat, said seat adjustment device comprising: a lever capable of torque input; a movement mechanism having a rotary mechanism, and being configured to enable adjustment movement of a desired portion of the seating seat; and a clutch unit disposed between said lever and said rotary member of said movement mechanism, wherein said clutch unit comprises a lever side clutch section disposed on an input side and being configured to control transmission/interruption of rotational torque to an output side through a lever operation, a brake side clutch section disposed on the output side and being configured to transmit input torque from said lever side clutch section to the output side and to interrupt reverse input torque from the output side, and a rotation control clutch section disposed adjacent to said brake side clutch section and being configured to rotate by inching an output side member of said brake side clutch section through a pumping operation in which said lever is rotated in one direction and enables said output side member of said brake side clutch section to be rotatable through a single operation in which said lever is rotated in the opposite direction, wherein said rotation control clutch section has a control device configured to divide said output side member into a first output side member and a second output side member and is configured to control transmission/interruption of torque between said first output side member and said second output side member, and wherein, in a neutral state of said brake side clutch section, a clearance angle made by two contact points of an input side member and said output side member with respect to a rotation center, and a clearance angle made by two contact points of said input side member and an engagement member with respect to the rotation center, are larger in one rotating direction than in the other rotating direction.