DAMPER DEVICE

A damper device of the present disclosure includes: an input element to which a torque from an engine is transmitted; an output element; an elastic body that transmits a torque between the input element and the output element; and rotary inertia mass damper having a mass body that rotates in accordance with a relative rotation of the input element and the output element, in which the output element is coupled to a rotor of an electric motor, the rotor of the electric motor is coupled to an input shaft of a transmission, the rotary inertia mass damper includes a planetary gear mechanism having a sun gear, a ring gear, a plurality of pinion gears, and a carrier that supports the plurality of pinion gears, and the carrier is a part of the input element, one of the sun gear and the ring gear is a part of the output element, and the other of the sun gear and the ring gear functions as the mass body. Thus, with the damper device including the rotary inertia mass damper, it is possible to satisfactorily suppress the shaft resonance of a transmission from becoming apparent.