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 torsional vibration reduction apparatus has coil springs. The coil springs are received in paired input member side coil spring receiving portions and an output member side coil spring receiving portion. The paired input member side coil spring receiving portions comprise forward rotation side and reverse rotation side guide portions between forward rotation side and reverse rotation side spring pedestals. The output member side coil spring receiving portion comprises forward rotation side and reverse rotation side guide portions between forward rotation side and reverse rotation side spring pedestals. In forward rotation and reverse rotation, since the displacement of the coil springs under the centrifugal force is received by the guide portions and the vertical component force of the elastic force is small, sliding resistance is suppressed, the hysteresis torque is reduced, additive components are not required, and the installation positions of the coil springs cannot be restricted.

The present damper device includes a large hysteresis mechanism, generating a large hysteresis torque, and a hysteresis inhibiting mechanism. In a positive-side torsional region, when relative rotation is performed until reaching a maximum torsion angle from a neutral position, the hysteresis inhibiting mechanism deactivates the large hysteresis mechanism until the relative rotation reaches a first torsion angle from the neutral position, but activates the large hysteresis mechanism until the relative rotation reaches the maximum torsion angle from the first torsion angle; and when the relative rotation is performed until reaching the neutral position from the maximum torsion angle, the hysteresis inhibiting mechanism deactivates the large hysteresis mechanism until the relative rotation reaches a second torsion angle less than the first torsion angle from the maximum torsion angle, but activates the large hysteresis mechanism until the relative rotation reaches the neutral position from the second torsion angle.

A torsional vibration damper includes a planetary rotary unit and an elastic body that couples two rotary elements of three rotary elements so that the two rotary elements can rotate relatively to each other. The torsional vibration damper includes a shaft supporting member by which a rotation center axis of at least any one rotary element of the two rotary elements and a rotation center axis of the rotary element other than the planetary rotary unit and the two rotary elements are held on the same axis. The shaft supporting member has a holding section that is disposed in a position between fellow planetary rotary elements and not making contact with the planetary rotary elements and that fits with and thereby suppresses movement of the rotary element other than the planetary rotary unit and the two rotary elements in the axial direction.

The present invention relates to a torsional vibration reduction apparatus which uses coil springs and can obtain expected torsional vibration reduction performance by reducing the hysteresis torque caused by the sliding of coil springs (50) without restricting the layout and requiring the additive components. The coil springs (50) are received in paired input member side coil spring receiving portions (44) and an output member side coil spring receiving portion (48). The paired input member side coil spring receiving portions (44) comprise forward rotation side and reverse rotation side guide portions (44-1a) and (44-1b) between forward rotation side and reverse rotation side spring pedestals (44a) and (44b). The output member side coil spring receiving portion (48) comprises forward rotation side and reverse rotation side guide portions (48-1a) and (48-1b) between forward rotation side and reverse rotation side spring pedestals (48a) and (48b). In both the forward rotation and the reverse rotation, since the displacement of the coil springs (50) under the centrifugal force is received by the guide portions (44-1a), (48-1b); and (44-1b), (48-1a) and the vertical component force of the elastic force is small, the sliding resistance is suppressed, the hysteresis torque is reduced, the additive components is not required, and the installation positions of the coil springs (50) cannot be restricted.

The invention relates to clutch disc comprising a torsional vibration damper which has an inlet part and an outlet part and a spring device operatively arranged in the peripheral direction between the input part and the output part, wherein the spring device is formed from the first and second spring elements connected behind one another and separated by an intermediate flange, and a centrifugal pendulum which has a pendulum mass carrier arranged about an axis of rotation of the clutch disc and pendulum masses accommodated on same on pendulum paths for oscillation and arranged in a distributed manner over the periphery. In order to improve the insulation effect of the torsional vibration damper and the centrifugal pendulum and/or better adjust same to the required application, the pendulum mass carrier is coupled for conjoint rotation with the intermediate flange and centrally accommodated on the output part.

The present damper device includes a large hysteresis mechanism, generating a large hysteresis torque, and a hysteresis inhibiting mechanism. In a positive-side torsional region, when relative rotation is performed until reaching a maximum torsion angle from a neutral position, the hysteresis inhibiting mechanism deactivates the large hysteresis mechanism until the relative rotation reaches a first torsion angle from the neutral position, but activates the large hysteresis mechanism until the relative rotation reaches the maximum torsion angle from the first torsion angle; and when the relative rotation is performed until reaching the neutral position from the maximum torsion angle, the hysteresis inhibiting mechanism deactivates the large hysteresis mechanism until the relative rotation reaches a second torsion angle less than the first torsion angle from the maximum torsion angle, but activates the large hysteresis mechanism until the relative rotation reaches the neutral position from the second torsion angle.

A torsional vibration damper includes a planetary rotary unit and an elastic body that couples two rotary elements of three rotary elements so that the two rotary elements can rotate relatively to each other. The torsional vibration damper includes a shaft supporting member by which a rotation center axis of at least any one rotary element of the two rotary elements and a rotation center axis of the rotary element other than the planetary rotary unit and the two rotary elements are held on the same axis. The shaft supporting member has a holding section that is disposed in a position between fellow planetary rotary elements and not making contact with the planetary rotary elements and that fits with and thereby suppresses movement of the rotary element other than the planetary rotary unit and the two rotary elements in the axial direction.

The invention relates to clutch disc comprising a torsional vibration damper which has an inlet part and an outlet part and a spring device operatively arranged in the peripheral direction between the input part and the output part, wherein the spring device is formed from the first and second spring elements connected behind one another and separated by an intermediate flange, and a centrifugal pendulum which has a pendulum mass carrier arranged about an axis of rotation of the clutch disc and pendulum masses accommodated on same on pendulum paths for oscillation and arranged in a distributed manner over the periphery. In order to improve the insulation effect of the torsional vibration damper and the centrifugal pendulum and/or better adjust same to the required application, the pendulum mass carrier is coupled for conjoint rotation with the intermediate flange and centrally accommodated on the output part.

A power transmission device is disposed between an engine and a transmission so as to be capable of attenuating fluctuations in torque. The device includes an input rotary part, an output rotary part, an elastic part, an inertia mass part and an engaging part. The torque is inputted to the input rotary part. The output rotary part is rotatable relatively to the input rotary part. The elastic part elastically couples the input rotary part and the output rotary part in a rotational direction. The inertia mass part is movable in the rotational direction. The engaging part is engaged with the elastic part and the inertia mass part. The engaging part actuates the elastic part by relative rotation between the input rotary part and the output rotary part and movement of the inertia mass part.