Clutch and brake unit

摘要

A wet clutch accompanying rotation preventing device for use in a wet clutch unit which keeps a clutch hub of an input shaft side engaged with a clutch case by spline fitting the clutch case onto an output shaft freely movably in the axial direction and by utilizing an elastic force of a clutch spring; in which an annular friction plate forming a frictional surface on its flank is fitted onto the clutch case so as to rotate just together with the case and so as to be restricted its movement thereto in the axial direction, a stationary member for braking the clutch case facing towards the frictional surface of the friction plate with a clearance kept between them, the clutch unit is disengaged and simultaneously said frictional surface of said friction plate contacts with the stationary member to brake the clutch case when the clutch case is moved in the axial direction in order to disengage the clutch unit.