A hydrodynamic torque converter and a torsional vibration damper include a pump wheel connected on the drive side and a turbine wheel which is driven by the pump wheel. Between the housing of the torque converter and an output hub, a torsional vibration damper, which includes an input part that can be connected to the housing by a converter bridging clutch, and an output part, which is connected to the output hub, are provided. In order to allow a special wiring of the torsional vibration damper, an intermediate flange is arranged against a respective spring device, which acts in a circumferential direction, between the input part and the output part, said intermediate flange having a centrifugal pendulum and being connected to the turbine wheel.

A hydrodynamic torque converter and a torsional vibration damper include a pump wheel connected on the drive side and a turbine wheel which is driven by the pump wheel. Between the housing of the torque converter and an output hub, a torsional vibration damper, which includes an input part that can be connected to the housing by a converter bridging clutch, and an output part, which is connected to the output hub, are provided. In order to allow a special wiring of the torsional vibration damper, an intermediate flange is arranged against a respective spring device, which acts in a circumferential direction, between the input part and the output part, said intermediate flange having a centrifugal pendulum and being connected to the turbine wheel.

A damper device includes a first rotor, a second rotor, and an elastic coupling part elastically coupling the first and second rotors in a rotational direction. The elastic coupling part includes first and second elastic members that are each initially disposed in a compressed state in a neutral condition without relative rotation between the first rotor and the second rotor. The first elastic member is transitioned from the compressed state to a free state and then further compressed when torsion of the first rotor with respect to the second rotor is caused from the neutral condition to a first side in the rotational direction. The second elastic member is transitioned from the compressed state to the free state and then further compressed when the torsion of the first rotor with respect to the second rotor is caused from the neutral condition to a second side in the rotational direction.

A damper device includes first and second rotors, and an elastic coupling part elastically coupling the two rotors. The elastic coupling part includes first and second elastic members initially disposed in a compressed state in a neutral condition without relative rotation between the two rotors. The first elastic member is transitioned from the compressed state to a free state and then further compressed when torsion of the first rotor with respect to the second rotor is caused from the neutral condition to a first side. The second elastic member is transitioned from the compressed state to the free state and then further compressed when the torsion of the first rotor with respect to the second rotor is caused from the neutral condition to a second side. Each of the first and second elastic members is transitioned from a one-side contact state to a both-side contact state when actuated in compressed.

A lock-up device for a torque converter is disclosed. The lock-up device includes a clutch part, first and second rotary members, a plurality of elastic members and a stopper mechanism. The clutch part is provided between a front cover and a turbine, and transmits the torque inputted to the front cover to the turbine. The first rotary member is disposed between the clutch part and the turbine. The second rotary member is rotatable relative to the first rotary member. The elastic members elastically couple an outer peripheral part of the first rotary member and an outer peripheral part of the second rotary member in a rotational direction. The stopper mechanism is disposed axially between the elastic members and an outer peripheral part of a turbine shell. The stopper mechanism includes an engaging portion restricting an angular range of relative rotation between the first rotary member and the second rotary member.

A damper device includes a first rotor, a second rotor, and an elastic coupling part elastically coupling the first and second rotors in a rotational direction. The elastic coupling part includes first and second elastic members that are each initially disposed in a compressed state in a neutral condition without relative rotation between the first rotor and the second rotor. The first elastic member is transitioned from the compressed state to a free state and then further compressed when torsion of the first rotor with respect to the second rotor is caused from the neutral condition to a first side in the rotational direction. The second elastic member is transitioned from the compressed state to the free state and then further compressed when the torsion of the first rotor with respect to the second rotor is caused from the neutral condition to a second side in the rotational direction.

A damper device includes first and second rotors, and an elastic coupling part elastically coupling the two rotors. The elastic coupling part includes first and second elastic members initially disposed in a compressed state in a neutral condition without relative rotation between the two rotors. The first elastic member is transitioned from the compressed state to a free state and then further compressed when torsion of the first rotor with respect to the second rotor is caused from the neutral condition to a first side. The second elastic member is transitioned from the compressed state to the free state and then further compressed when the torsion of the first rotor with respect to the second rotor is caused from the neutral condition to a second side. Each of the first and second elastic members is transitioned from a one-side contact state to a both-side contact state when actuated in compressed.

In a damper device, a dynamic damper is coupled to a first intermediate member, first and second inner-side springs that act in series with each other are straight coil springs disposed between a second intermediate member and a driven member so that outward movement of the springs in a radial direction of the damper device is restricted at respective both ends, and a gap is formed between each body portion of the first and the second inner-side springs and the second intermediate member or a spring abutment portion of the driven member.

A damper device for transmitting power to an output-side member is disclosed. The damper device includes input-side and output-side rotors, a plurality of elastic members, and a hysteresis generating mechanism. The input-side rotor, to which power is inputted, is rotatable. The output-side rotor is rotatable relative to the input-side rotor. The output-side rotor includes a hub and a plurality of flanges. The hub is coupled to the output-side member. The plurality of flanges extend radially outward from the hub. The plurality of flanges are disposed at predetermined intervals in a circumferential direction. The plurality of elastic members are disposed circumferentially between the plurality of flanges, and elastically couple the input-side rotor and the output-side rotor in the circumferential direction. The hysteresis generating mechanism is disposed axially between the input-side rotor and the plurality of flanges, and configured to generate a hysteresis torque between the input-side rotor and the output-side rotor.

A damper device for transmitting power to an output-side member is disclosed. The damper device includes an input-side rotor, an output-side rotor, a plurality of elastic members, an intermediate rotor, and a first hysteresis generating mechanism. The input-side rotor, to which the power is inputted, is disposed to be rotatable. The output-side rotor is rotatable relative to the input-side rotor. The plurality of elastic members are configured to elastically couple the input-side rotor and the output-side rotor in a circumferential direction. The intermediate rotor is configured to actuate at least two of the plurality of elastic members in series. The intermediate rotor is rotatable relative to the input-side rotor and the output-side rotor. The first hysteresis generating mechanism is configured to apply a hysteresis torque to the intermediate rotor in elastic deformation of the plurality of elastic members.