Torque converter

A torque converter in which a first damper and a second damper are disposed in a torque transmission path that transmits torque between an output shaft and a clutch constituent member forming part of a lockup clutch so as to rotate together with a pump impeller in a state in which the lockup clutch is connected, the first damper having a first damper spring retained by the clutch constituent member, the second damper having a second damper spring retained by a pair of retaining plates that form part of the torque transmission path and are disposed so as to be spaced in an axial direction of the output shaft, and a dynamic damper being attached to the torque transmission path between the first damper and the second damper,

• wherein the dynamic damper comprises an inertial rotating body and an elastic member, the inertial rotating body being formed by mounting a weight member on an outer peripheral part of an inertia plate that is formed into a ring plate shape coaxial with the output shaft and is sandwiched between the pair of retaining plates, and the elastic member being provided between the inertia plate and the pair of retaining plates,
• a claw part is provided on one of the pair of retaining plates that is disposed on a side opposite to the clutch constituent member with respect to the inertia plate, the claw part engaging with the first damper spring so as to sandwich the first damper spring between the claw part and the clutch constituent member, and an elongated hole is formed in the inertia plate, the elongated hole extending lengthwise in a peripheral direction of the inertia plate while having the claw part inserted through the elongated hole,
• wherein the second damper spring of the second damper is disposed between the pair of retaining plates and a driven plate that is disposed radially inward of the inertia plate so as to rotate together with the output shaft, and the inertia plate and the driven plate are formed from the same material so as to have an identical plate thickness.