A turbine damper assembly, for a torque converter, includes a driven plate and an intermediate plate. The driven plate engages and drives the intermediate plate through elastic drive elements. The driven plate includes an axially extended, circumferentially oriented, driven plate flange that both centers the intermediate plate with respect to the drive plate and also assists in containing the elastic drive elements in circumferential curved cavities during and after assembly of the turbine damper assembly.

A damper apparatus includes a drive plate, a driven plate, torsion springs, and spring housing portions. The torsion springs each have a large arc spring and a small arc spring, and elastically couple the drive plate and the driven plate in the rotation direction and transmit torque. The spring housing portions have a support surface that can support the outer periphery of the large arc springs, and the support surface comes into contact with the outer periphery of the central portions, in the lengthwise direction, of the large arc springs. Also, gaps exist between the support surface and the outer periphery of the two end portions, in the lengthwise direction, of the large arc springs.

A spring retainer for a damper for use in a torque converter is provided. The spring retainer includes a ring including a radially extending base and a spring retaining portion radially outside of the base. The spring retaining portion includes rounded sections spaced circumferentially from each other and shoulders circumferentially between the rounded sections. Each rounded section is configured for receiving an arc spring. The spring retainer also includes rivets fixed to the shoulders. The rivets protrude axially from the shoulders into an interior of the spring receiving portion and are arranged for contacting ends of the springs. A method of forming a spring retainer is also provided.

A lock-up device for a torque converter transmits a torque from a front cover to a transmission-side member through a turbine. The lock-up device includes a clutch portion and a damper portion. The clutch portion includes a clutch plate and transmits the torque from the front cover toward the turbine. The damper portion includes an elastic member, a holding member and an output-side member. The elastic member attenuates a fluctuation in the torque. The holding member holds the elastic member and is provided with an engaging part integrated therewith. The engaging part is engaged with the clutch plate. The output-side member is rotatable relatively to the holding member within a range of a predetermined angle. The output-side member transmits the torque toward the turbine when the torque is transmitted to the elastic member through the holding member.

A torsional vibration damper includes a planetary gear set having a ring gear connected to a transmission input shaft, a carrier rotatably supporting multiple planet gears individually meshed with a sun gear, and with the ring gear meshed with the planet gears. A spring cage includes a first spring support member having: a member first leg fixed to the ring gear; a member second leg rotatably connected to the transmission input shaft; and multiple first spring support member elements. A second spring support member connected to the carrier, the second spring support member having multiple second spring support member elements. Multiple springs each spring have at least one of the first spring support member elements and one of the second spring support member elements in contact with opposed ends of the spring. An inertial mass member is connected to the sun gear at a first end and has an inertial mass connected at a second end.

A lock-up device includes a clutch part and a damper part. The clutch part is disposed between a front cover and a turbine, and transmits or blocks torque. The damper part transmits torque from the clutch part to the turbine, and absorbs torsional vibration. The damper part includes input and output members, elastic members, and a support member. The input member is connected to the clutch part. The output member is connected to the turbine. The elastic members connect the input and output members. The support member has a connecting part, a regulating part, and a stopper part. The regulating part is provided such that the output member is interposed axially between the regulating part and part of the input member. The stopper part is configured to contact the output member and prohibit the input and output members from rotating relative to each other by a predetermined angle or more.

A lock-up device includes a clutch part and a damper part. The clutch part is disposed between a front cover and a turbine. The clutch part transmits or blocks torque. The damper part transmits torque from the clutch part to the turbine, and absorbs torsional vibration. The damper part includes an input member, an output member, a plurality of elastic members, and a support member. The input member is connected to the clutch part. The output member is rotatable relative to the input member and is connected to the turbine. The elastic members are accommodated in the input member, and elastically connect the input member and the output member in a rotational direction. The support member has a connecting part and a plurality of support parts. The connecting part is connected to the input member. The plurality of support parts support inner peripheral surfaces of the plurality of elastic members.

A torsional vibration damper and a hydrodynamic torque converter comprising same is disclosed. The torsional vibration damper has an input part which can be rotated about a rotational axis (d) and an output part. An intermediate flange is arranged against a respective spring device, which acts in a circumferential direction, between the input part and the output part, and the intermediate flange is made of two axially spaced interconnected lateral parts, axially between which the input part and the output part are received. In order to improve the loading of the spring devices, the loading of the spring devices by means of the intermediate flange is at least partly provided by loading means arranged between the lateral parts.

A damper device includes a first rotor disposed to be rotatable, a second rotor rotatable relative to the first rotor, and a plurality of elastic members configured to elastically couple the first rotor and the second rotor in a circumferential direction. The first rotor includes a first plate and a second plate. The first and second plates are axially opposed to each other, and fixed to be immovable in both axial and circumferential directions. The first plate includes a plurality of first holding portions and a plurality of bent portions. The plurality of first holding portions hold the plurality of elastic members. The plurality of bent portions are provided on an outer peripheral end of the first plate, and bent toward the second plate. The second plate includes a plurality of second holding portions holding the plurality of elastic members together with the plurality of first holding portions.

A lock-up device includes a clutch part and a damper part. The clutch part is disposed between a front cover and a turbine. The clutch part transmits or blocks torque. The damper part transmits torque from the clutch part to the turbine, and absorbs torsional vibration. The damper part includes an input member, an output member, a plurality of elastic members, and a support member. The input member is connected to the clutch part. The output member is rotatable relative to the input member and is connected to the turbine. The elastic members are accommodated in the input member, and elastically connect the input member and the output member in a rotational direction. The support member has a connecting part and a plurality of support parts. The connecting part is connected to the input member. The plurality of support parts support inner peripheral surfaces of the plurality of elastic members.