The invention relates to a device for damping vibrations, for a motor vehicle transmission drivetrain, comprising: a first element and a second element (2) that are rotationally movable around a rotation axis X; elastic damping means having an elastic blade (13, 14) mounted rotationally integrally with the first element (3); and a rolling body movable with respect to the second element so that a curvilinear trajectory can be executed on at least a predetermined angular sector (A), the curvilinear movement of the rolling body with respect to the second element being accompanied by a movement of the rolling body on the elastic blade, causing the latter to flex.

The invention relates to a torque transmitting device comprising a torque input element (17a, 17b) and a torque output element (8) able to pivot about a shaft (X) with respect to one another, at least one elastic leaf (22), rotationally coupled to the torque output element (8) or to the torque input element (17a, 17b) respectively, the elastic leaf (22) being able to be elastically and radially supported by a supporting member (18) carried by the torque input element (17a, 17b) or the torque output element (8) respectively, the elastic leaf (22) being able to bend upon rotation of the torque input element (17a, 17b) with respect to the torque output element (8).

The invention relates to a torque transmission device, more particularly for a motor vehicle, comprising a torque input element (15, 17) and a torque output element (8) able to pivot about an axis (X) with respect to one another, at least one elastic leaf (22), rotationally coupled to the torque output element (8) or to the torque input element (15, 17) respectively, the elastic leaf (22) being able to be elastically and radially held to rest on a supporting member (18) carried by the torque input element (15, 17) or the torque output element (8) respectively, the elastic leaf (22) being able to bend upon rotation of the torque input element (15, 17) with respect to the torque input element (8).

A torsional damper for a torque transmission device, comprising: a first element (1) and a second element (2) rotationally movable with respect to one another; and a first damping means and a second damping means, each damping means comprising: an elastically deformable blade (9) having a fastening portion (12) and an elastic portion (13), an abutment element carried by the other of the first and second elements and configured, for an angular deflection between the first and second elements with respect to an inactive angular position, to apply a flexural load onto the blade,
the elastic portion of the blade of the first damping means proceeds circumferentially beyond the fastening portion of the blade of the second damping means.

A torque transmitting device comprising a torque input element (17a, 17b) and a torque output element (8) able to pivot about an axis (X) with respect to one another, at least one elastic leaf (22), rotationally coupled to the torque output element (8) or to the torque input element (17a, 17b) respectively, the elastic leaf (22) being able to be elastically and radially held torest on a supporting member (18) carried by the torque input element (17a, 17b) or the torque output element (8) respectively, the elastic leaf (22) being able to bend upon rotation of the torque input element (17a, 17b) with respect to the torque input element (8).

The invention relates to a damper, in particular for an automobile clutch, comprising:

an input element and an output element rotationally movable with respect to one another around a rotation axis (X); and one of the input and output elements is equipped with a cam follower (21);

damping means interposed between the input and output elements; the damping means have a flexible blade (17a; 17b), and the flexible blade is provided with a cam surface (20) arranged to interact with the cam follower, that cam surface extending over an opening angle (A) greater than 30°, in particular 45°.

A design method for an inerter with adaptively adjusted inertia ratio is based on a lead screw-flywheel inerter, which is to change the positions of mass blocks on a flywheel along the radial direction of the flywheel, so as to change of the moment of inertia of the flywheel, and thus to realize adaptive adjustment of the inertia ratio of the inerter. Specifically, the change of angular velocity of the flywheel is caused by the change of an external force load on a lead screw, a centrifugal force on the mass blocks in spring-mass block structures is changed by the angular velocity, and the positions of the mass blocks in the radial direction of the flywheel is determined by the balanced relation of the centrifugal force and a spring restore force, so that the design purpose is achieved.

A vibration damper is provided with two rotating members, i.e. an oscillating inertial flywheel and a member to be damped driven by a torque following a torque path between a driving member and a driven member, wherein the inertial flywheel is connected kinematically to the torque path between the driving member and the driven member solely by way of the member to be damped. Connecting modules between the two rotating members permit a relative angular displacement θ between the two rotating members on the two sides of a reference relative angular position. Each connecting module is provided with a roller associated with a first of the two rotating members and a cam track connected resiliently by a resilient element to a second of the two rotating members.

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.

A torsional vibration damper comprises an axially movable locking piston including a piston plate, a torque input member including a cover plate, a support plate disposed axially opposite the cover plate and a supporting member mounted to both the cover and support plates, and a unitary radially elastic output member pivotable relative to and elastically coupled to the torque input member. The output member is disposed axially between the cover plate and the piston plate. The output member includes an output hub and a curved elastic blade configured to elastically and radially engage the supporting member and to elastically bend in the radial direction upon rotation of the cover plate with respect to the output member. The cover plate at least partially covers an axially first outer surface of the output member. The support plate partially covers an axially second outer surface of the output member.