A damper device provided between a power source-side member and an output-side member, the damper device comprising:
- a damper unit coupled to the output-side member;
- and
- a torque limiter unit configured to limit a torque transmitted between the power source-side member and the damper unit, wherein
- the damper unit includes
- first and second plates axially opposed to each other, the first plate including a plurality of window portions circumferentially aligned with each other and the second plate including a plurality of window portions circumferentially aligned with each other, with each window portion in the first plate being aligned with a corresponding window portion in the second plate to form a plurality of window-portion pairs,
- a hub flange rotatable relative to the first and second plates, the hub flange including a flange disposed axially between the first and second plates, the flange including a plurality of window holes disposed in corresponding positions to the plurality of window-portion pairs, each of the window holes being entirely spaced radially inwardly from an outer peripheral edge of the hub flange such that the window holes have complete bounds with peripheries of the window holes constituting closed surfaces,
- a plurality of elastic members configured to elastically couple the hub flange and the first and second plates in a rotational direction, the plurality of elastic members accommodated in the plurality of window-portion pairs and the plurality of window holes, and
- a stopper mechanism configured to restrict relative rotation between the hub flange and the first and second plates to a range of a predetermined angle,
- the torque limiter unit includes
- an annular plate fixed at an inner peripheral part thereof to an outer peripheral part of the first plate by a fixation member,
- the first plate includes an engaging portion and a fixing portion, the engaging portion disposed radially outside the plurality of window portions of the first plate, the engaging portion extending toward the second plate, the fixing portion extending radially outward from a distal end of the engaging portion, the fixing portion fixed to the second plate,
- the hub flange includes a protrusion disposed circumferentially between and radially outside adjacent two of the plurality of window holes,
- the stopper mechanism is configured to be actuated by contact of the protrusion with the engaging portion when the first and second plates are rotated relative to the hub flange at the predetermined angle, and
- the fixation member is disposed circumferentially between adjacent two of the plurality of window-portion pairs as seen in a direction along a rotational axis.