DAMPER DEVICE

To provide a damper device capable of achieving an improvement in the durability of the overhang portion and the coil spring, while allowing the overhang portion of the spring seat to deform, following the coil spring. The damper device comprises a first coil spring (31) and a second coil spring (32) which are interposed in the circumferential direction between a hub plate-side support arm (11) of a hub plate (1) and an intermediate plate-side support arm (24) of an input-output plate (2), and a first spring seat (41) and a second spring seat (42) made of resin having a metallic core member (45) inside, which supports the two ends of the coil springs (31), (32), wherein the two spring seats (41), (42) comprises a seat portion (43) and an overhang portion (44), and the overhang portion metallic core member (452) of the metallic core member (45) comprises a low-rigidity portion (452) that is provided on a side close to the seat portion (43) with a relatively lower rigidity, and a high-rigidity portion (452b) that is provided on a side far from the seat portion (43) with a relatively higher rigidity.