Patent ID: 7955212

Claim:
A damper device comprising: a first torsional damper that has a mass portion and an elastic portion attached on the mass portion; and a second torsional damper that has a mass portion and an elastic portion attached on the mass portion and has a characteristic different from a characteristic of the first torsional damper, wherein the first torsional damper and the second torsional damper are provided on a rotational element that rotates about a rotational axis, the mass portion of the first torsional damper is annular and surrounds the elastic portion of the first torsional damper, and the mass portion of the second torsional damper is annular and surrounds the elastic portion of the second torsional damper, the mass portion of the first torsional damper has a first inclined face that extends along the circumference of the mass portion of the first torsional damper such that the elastic portion of the first torsional damper deforms in a sheared manner as the mass portion of the first torsional damper moves, with respect to the rotational element, in a rotational direction about the rotation axis of the rotational element and such the elastic portion of the first torsional damper partially deforms in a compressed manner as the mass portion of first torsional damper moves, with respect to the rotational element, in a direction other than the rotational direction, the mass portion of the second torsional damper has a plurality of second inclined faces that extend in an axial direction of the rotational element and are spaced apart from each other along the circumference of the mass portion of the second torsional damper such that the elastic portion of the second torsional damper deforms in a sheared manner as the mass portion of the second torsional damper moves, with respect to the rotational element, in the direction of the rotational axis of the rotational element and such that the elastic portion of the second torsional damper partially deforms in a compressed manner as the mass portion of the second torsional damper moves, with respect to the rotational element, in a direction other than the direction of the rotational axis of the rotational element, and at least one of the first torsional damper, the second torsional damper, and the rotational element has a first opposite face that is opposed to the first inclined face of the mass portion of the first torsional damper, and at least one of the first torsional damper, the second torsional damper, and the rotational element has second opposite faces that are opposed to the respective second inclined faces of the mass portion of the second torsional damper.