A damper device includes a plurality of rotational elements including an input element and an output element; an elastic body that transmits a torque between the input and the output elements; and a rotary inertia mass damper with a mass body rotating in accordance with a relative rotation between a first rotational element which is one of the rotational elements and a second rotational element different from the first rotational element. The rotary inertia mass damper includes a sun gear that rotates integrally with the first rotational element, pinion gears rotatably supported by the second rotational element, and a ring gear that meshes with the pinion gears and works as the mass body. The second rotational element includes a plurality of ring gear supporting portions arranged at intervals in a circumferential direction so as to restrict a movement of the ring gear in an axial direction of the damper device.

A damper apparatus that includes an input to which a torque from an engine is transferred; an output; a first intermediate element; a second intermediate element; a first elastic body configured to transfer the torque between the input and the first intermediate element; a second elastic body configured to transfer the torque between the first intermediate element and the output; a third elastic body configured to transfer the torque between the input and the second intermediate element; a fourth elastic body configured to transfer the torque between the second intermediate element and the output; and a fifth elastic body configured to transfer the torque between the first intermediate element and the second intermediate element.

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 damper device includes rotating elements including an input element and an output element, first elastic bodies that each transmit torque between the input element and the output element, a plurality of second elastic bodies that act in parallel with the plurality of first elastic bodies when torque transmitted between the input element and the output element is greater than or equal to a predetermined value, and a rotary inertia mass damper. The rotary inertia mass damper includes a sun gear, a carrier that rotatably supports a plurality of pinion gears, and a ring gear that meshes with the plurality of pinion gears and that serves as a mass body. The plurality of second elastic bodies are located at a different position than the plurality of first elastic bodies in a radial direction of the rotating elements and are circumferentially aligned with the plurality of pinion gears.

A damper device including an input element and an output element; an elastic body transmitting torque between the input element and the output element; and a rotary inertia mass damper having a mass body. The rotary inertia mass damper includes a sun gear, a carrier rotatably supporting pinion gears, and a ring gear that meshes with the pinion gears and serving as the mass body. A pair of washers is located on both sides of each pinion gear axially. The ring gear includes an annulus gear having internal teeth meshing with the pinion gears and a weight body fixed to the annulus gear such that the weight body is in contact with a side surface of the annulus gear. An inner circumferential surface of the weight body is supported in a radial direction by a tip of the pinion gear or an outer circumferential surface of the washer.

The present invention relates to a lock-up device for a torque converter which has a simple structure compared to the prior art, which reduces manufacturing costs, and which may reduce a size of the entire torque converter by minimizing an installation space of a dynamic damper.

A power transmission device includes a first rotary member, a second rotary member, and a damper mechanism. The first rotary member includes a chamber in an interior thereof. The second rotary member is disposed to be rotatable relative to the first rotary member. The damper mechanism is configured to elastically couple the first rotary member and the second rotary member in a rotational direction. The damper mechanism includes a first damper part disposed inside the chamber and configured to transmit power together with the first rotary member therebetween, a second damper part disposed outside the chamber and radially inward of the first damper part and configured to transmit the power together with the second rotary member therebetween, and an intermediate member including an inertia portion disposed outside the chamber and configured to couple the first damper part and the second damper part.

A power transmission device includes a first rotary member, a second rotary member disposed to be rotatable relative to the first rotary member, a first damper part, a second damper part, an intermediate member, and a bearing. The first damper part is configured to transmit a power together with the first rotary member therebetween. The second damper part is configured to transmit the power together with the second rotary member therebetween. The intermediate member is configured to couple the first damper part and the second damper part therethrough. The bearing causes the intermediate member to be rotatably supported by the first rotary member therethrough.

A drive assembly for a motor vehicle drive train includes a first subassembly configured for connecting to an engine crank. The first subassembly includes a slip clutch plate. The drive assembly also includes a second subassembly connected to the first subassembly via a radially outer portion of the slip clutch plate. The second subassembly includes a damper assembly. A method of forming a drive assembly for a motor vehicle drive train is also provided.

An inertial deflector (1) for a motor vehicle transmission system. The inertial deflector comprises a support member (7) intended to be associated with an element (3) of the transmission system and to be driven rotationally around an axis X, an inertia mass (8) mounted rotationally movably on the support member (7) around the axis X, and helical springs (9) arranged along a circumferential direction and elastically rotationally coupling the support member (7) and the inertia mass (8). Each of the helical springs (9) is received in a receiving space that is delimited between on the one hand a recess (22) configured in the inertia mass (8) and radially and axially guiding the helical spring, and on the other hand a rim zone (23) of the support member (7) covering the recess (22) in order to axially retain the helical spring (9) in the recess (22).