Patent ID: 6375575
Filing Date: 2002-04-23
Classification: F16F

Abstract:
A damper mechanism comprising:an input rotary member; an output rotary member for limited relative rotary displacement therebetween such that torque is transmitted therebetween; a damper including a spring member arranged to connect elastically said input rotary member and said output rotary member in a rotating direction, said damper mechanism being arranged to exhibit torsion characteristics in a positive side where said input rotary member is twisted relative to said output member in the input rotational direction and a negative side where said input rotary member is twisted relative to said output member in the opposite of said input rotational direction; a friction mechanism arranged to generate friction when said input rotary member and said output rotary member rotative relative to each other and a spring force of said spring member is applied thereto; and a friction suppressing mechanism operatively arranged to form a rotational gap that closes in a non-continuous manner during continuous compression of said damper, said rotational gap arranged to prevent said spring force of said spring member from being applied to said friction mechanism, said rotational gap existing only in one of said positive and negative sides of said torsional characteristics.