Absorber-type vibration damper
A tuned mass vibration damper for damping a vibration component of a rotational movement, includes at least three damper masses, at least one guide component part to movably guide the at least three damper masses such that the damper masses are arranged so as to be offset along a circumferential direction perpendicular to an axis of rotation and can carry out the oscillations, and a damping component part rotatable around the axis of rotation of the rotational movement opposite to the at least one guide component part and which comprises a support structure and at least two damping structures connected to the support structure. The damping structures extend radially from the support structure and are constructed and arranged such that one damping structure of the at least two damping structures when making contact with one of two adjacent damper masses prevents a contact of the two adjacent damper masses.
1. A tuned mass vibration damper ( 300 ) for a drivetrain of a motor vehicle for damping a vibration component of a rotational movement, comprising:
four damper masses ( 110 ) configured to carry out an oscillation depending on the rotational movement to damp the vibration component of the rotational movement;
at least one guide component part ( 130 ) configured to movably guide the four damper masses ( 110 ) such that the damper masses ( 110 ) are arranged so as to be offset along a circumferential direction ( 160 ) perpendicular to an axis of rotation ( 140 ) of the rotational movement;
two damping component parts ( 310 ) whereby one of the damping component parts ( 310 - 1 ) is disposed axially below the damper masses and another of the damping component parts ( 310 - 2 ) is disposed axially above the damper masses ( 110 ) so as to sandwich the damper masses ( 110 ) between the two damping component parts ( 310 ) which are rotatable around the axis of rotation ( 140 ) of the rotational movement opposite to the at least one guide component part ( 130 ), each of the two damping component parts ( 310 ) comprising a circular support structure ( 340 ) and two damping structures ( 350 ) connected to each of the support structures ( 340 ), the two damping structures of each support structure are located opposite one another by an offset of 180° and the two damping structures ( 350 ) of one of the support structures are rotationally offset by substantially 90° relative to another two of the two damping structures of the other of the two support structures;
wherein the damping component parts ( 310 ) are arranged and configured such that each damper mass ( 110 ) can make contact with a damping structure ( 350 ) of a different damping component part ( 310 ) during a movement along a first direction in circumferential direction ( 160 ) than during a movement along a second direction opposite to the first direction; and
the two damping structures ( 350 ) extending radially from the support structure ( 340 ) and being constructed and arranged such that one damping structure ( 350 ) of the two damping structures ( 350 ), when making contact with one of two adjacent damper masses ( 110 ), prevents a contact of the two adjacent damper masses ( 110 ) through an elastic deformation, and/or such that, when a damper mass ( 110 ) of the four damper masses ( 110 ) makes contact with a damping structure ( 350 ) of the two damping structures ( 350 ), a damping component part ( 310 ) of the two damping component parts is rotatable around the axis of rotation ( 140 ) such that the other of the two damping structures ( 350 ) makes contact with another damper mass ( 110 ) of the four damper masses ( 110 ).