Damper device

A damper device comprising:

• a first rotating body configured to receive power and rotate around a rotation axis;
• a second rotating body configured to rotate around the rotation axis with a first elastic mechanism interposed between the second rotating body and the first rotating body, the first elastic mechanism being disposed along a circumferential direction of the damper device;
• and
• a third rotating body configured to rotate around the rotation axis with a second elastic mechanism interposed between the third rotating body and the second rotating body, the second elastic mechanism being disposed along the circumferential direction, wherein:
• when the first rotating body presses the first elastic mechanism, the first elastic mechanism presses the second rotating body, and the second rotating body rotates relative to the third rotating body while compressing the second elastic mechanism;
• when the first rotating body further presses the first elastic mechanism, the second rotating body contacts the first elastic mechanism;
• when the first rotating body further presses the first elastic mechanism, the first rotating body rotates relative to the second rotating body and the third rotating body while compressing the first elastic mechanism;
• the second elastic mechanism includes an elastic member, a first seat that supports one end of the elastic member, and a second seat that supports another end of the elastic member;
• and
• each of the first seat and the second seat is disposed between a first main surface of the second rotating body that extends in a direction along a plane intersecting the rotation axis and a second main surface of the third rotating body that extends in the direction along the plane intersecting the rotation axis, and each of the first seat and the second seat includes a protruding portion that extends in the direction along the plane intersecting the rotation axis.