Patent ID: 6336867
Filing Date: 2002-01-08
Classification: F16F

Abstract:
A damper mechanism for absorbing and damping torsional vibrations in a rotating direction comprising:a first rotary member; a second rotary member arranged to be rotatable with respect to said first rotary member; an intermediate rotary member arranged between said first and second rotary members; a first elastic member arranged between said first rotary member and said intermediate rotary member, said first elastic member being compressed when relative rotation occurs between said first rotary member and said intermediate rotary member; a second elastic member arranged between said intermediate rotary member and said second rotary member, said second elastic member being compressed when relative rotation occurs between said intermediate rotary member and said second rotary member, said second elastic member being initially compressed in the rotating direction between said intermediate rotary member and said second rotary member due to an initial load applied thereto prior to relative rotation between said intermediate rotary member and said second rotary member; a first relative rotation stop portion arranged to stop relative rotation between said first rotary member and said intermediate rotary member when a torsion angle of said first rotary member relative to said second rotary member reaches a first torsion angle; and a compressing portion arranged to compress said first elastic member between said first and second rotary members when the torsion angle of said first rotary member relative to said second rotary member reaches a second torsion angle larger than said first torsion angle, the initial load being configured such that said second elastic member is not further compressed between said intermediate rotary member and said second rotary member until the torsion angle of said first rotary member relative to said second rotary member reaches said first torsion angle.