Damper mechanism
AssigneeExedy Corporation
InventorHiroshi Uehara
Life of this patent
Estimating the term…
Abstract
A damper mechanism having preferable torsion characteristics that exhibit different characteristics on positive and negative sides by way of a simplified structure is provided. In the damper mechanism, a hub 6 is rotatable with respect to plates 12 and 13. Coil springs 33 are compressed on positive and negative sides of torsion characteristics. Elastic members 36 are arranged to operate in a rotating direction in parallel with the coil springs 33. The elastic members 36 are compressed on the positive side of the torsion characteristics, but are not compressed on the negative side of the torsion characteristics until a torsion angle exceeds a predetermined value. The elastic members 36 generate a frictional resistance when being compressed in the rotating direction, but no other friction generating mechanism is employed.
Claims21
A damper mechanism comprising:
- a first rotary member;
- a second rotary member being rotatable with respect to said first rotary member;
- a first elastic member coupling said first and second rotary members together in a rotating direction, being compressed in the rotating direction when relative rotation occurs between said first and second rotary members, and being compressed on positive and negative sides of torsion characteristics;
- and
- a second elastic member coupling said first and second rotary members together in the rotating direction, being compressed in the rotating direction when relative rotation occurs between said first and second rotary members, being arranged to operate in parallel in the rotating direction with respect to said first elastic member, being compressed on said positive side of said torsion characteristics, and being compressed on said negative side of said torsion characteristics only in a range when relative rotation between said first rotary member and said second rotary member exceeds a predetermined torsion angle;
- and
- a friction generating mechanism for generating a friction resistance only when said second elastic member is compressed in the rotating direction.
Dependencies are inferred from the claim text.