Damper device

A damper device configured to include a plurality of rotational elements including an input element to which a torque from an engine is transmitted and an output element, a plurality of elastic bodies respectively arranged to transmit a torque between the input element and the output element, and a rotary inertia mass damper with a mass body that oscillates in accordance with relative rotation between a first rotational element which is one of the plurality of rotational elements and a second rotational element different from the first rotational element,

• wherein the rotary inertia mass damper is configured to include a planetary gear that includes a sun gear, a plurality of pinion gears, a carrier that rotatably supports the plurality of pinion gears, and a ring gear that meshes with the plurality of pinion gears,
• wherein the carrier is arranged to rotate integrally with the first element,
• wherein the sun gear is arranged to rotate integrally with the second element,
• wherein the ring gear works as the mass body of the rotary inertia mass damper, and
• wherein the carrier is aligned by either the sun gear or a member that rotates integrally with the sun gear.