Centrifugal-force pendulum device

Abstract

A centrifugal-force pendulum device having a pendulum flange and at least two pendulum masses fastened on both sides of the pendulum flange by means of a spacer bolt received in a cut-out of the pendulum flange to form a pendulum mass pair, wherein the pendulum mass pair is guided and pivoted in a limited manner with respect to the pendulum flange by means of at least two rolling elements, and the rolling elements are received and roll in guide tracks in the pendulum masses and in complementarily shaped guide tracks in the pendulum flange, and wherein the spacer bolt is equipped, in its axial region which reaches through the cut-out in the pendulum flange, with damping means for damping contact of the spacer bolt against the cut-out, and compression of the damping means is limited by contact of a rolling element against the guide track which receives the rolling element.

What is claimed is: 
     
         1 . A centrifugal pendulum device ( 12 ) having a pendulum flange ( 34 ) and having at least two pendulum masses ( 38 ) arranged on both sides of the pendulum flange ( 34 ) which are attached to create a pendulum mass pair by means of a spacer bolt ( 40 ) which is accommodated in a recess ( 42 ) of the pendulum flange ( 34 ), wherein the pendulum mass pair can pivot with respect to the pendulum flange ( 34 ) in a guided and limited manner by means of at least two roller elements ( 50 ), and the roller elements ( 50 ) are accommodated in guide tracks ( 48 ) in the pendulum masses and in complementary-shaped guide tracks ( 46 ) in the pendulum flange, and can roll in the same, and wherein the axial region of the spacer bolt ( 40 ) which engages through the recess ( 42 ) in the pendulum flange is equipped with a damping means ( 52 ) for the purpose of damping an impact of the spacer bolt ( 40 ) on the recess ( 42 ), wherein a compression of the damping means ( 52 ) can be limited by an impact of the roller element ( 50 ) on the guide track ( 46 ,  48 ) which accommodates the roller element. 
     
     
         2 . The centrifugal pendulum device ( 12 ) recited in  claim 1 , wherein the damping means ( 52 ) is compressed when the roller element ( 50 ) impacts the guide track ( 46 ,  48 ). 
     
     
         3 . The centrifugal pendulum device ( 12 ) recited in  claim 2 , wherein a maximum compression of the damping means is limited by the impact. 
     
     
         4 . The centrifugal pendulum device ( 12 ) recited in  claim 1 , wherein the damping means ( 52 ) encloses the spacer bolt ( 40 ) as a damping sheath. 
     
     
         5 . The centrifugal pendulum device ( 12 ) recited in  claim 1 , wherein the damping means ( 52 ) is formed from an elastic material. 
     
     
         6 . The centrifugal pendulum device ( 12 ) recited in  claim 2 , wherein the elastic material is an elastomer and/or a plastic and/or a rubber and/or a composite material. 
     
     
         7 . The centrifugal pendulum device ( 12 ) recited in  claim 1 , wherein the damping means ( 52 ) is connected to the spacer bolt ( 40 ) in a material or positive-fit connection. 
     
     
         8 . The centrifugal pendulum device ( 12 ) recited in  claim 1 , wherein at least two pendulum mass pairs are arranged neighboring each other on the periphery. 
     
     
         9 . A torque transmission device, such as a hydrodynamic torque converter and/or a torsional vibration damper ( 10 ) and/or a wet or dry clutch device and/or a double-mass flywheel, having a centrifugal pendulum device ( 12 ) as recited in  claim 1 .