Lock-up device for torque converter

A lock-up device for a torque converter configured to transmit a torque inputted to a front cover to a transmission-side member through a turbine including a turbine shell, the lock-up device comprising:

• a clutch part provided between the front cover and the turbine, the clutch part configured to transmit the torque inputted to the front cover to the turbine;
• a first rotary member disposed between the clutch part and the turbine;
• a second rotary member rotatable relative to the first rotary member, the second rotary member coupled to the turbine;
• a plurality of elastic members configured to elastically couple a radially outer peripheral part of the first rotary member and a radially outer peripheral part of the second rotary member in a rotational direction;
• and
• a stopper mechanism disposed axially between the plurality of elastic members and an outer peripheral part of the turbine shell, the stopper mechanism including an engaging portion, the engaging portion having a cutout formed between two adjacent cutout-provided portions which protrude radially outward with respect to a radially outermost edge of the second rotary member, the engaging portion configured to restrict an angular range of relative rotation between the first rotary member and the second rotary member, the engaging portion overlapping at least one of the plurality of elastic members as viewed along an axial direction.