US 11,668,370 B2
Torsional vibration damping assembly
Kyrill Siemens, Würzburg (DE); and Jörg Bender, Würzburg (DE)
Assigned to ZF Friedrichshafen AG, Friedrichshafen (DE)
Appl. No. 17/428,043
Filed by ZF Friedrichshafen AG, Friedrichshafen (DE)
PCT Filed Feb. 11, 2020, PCT No. PCT/EP2020/053459
§ 371(c)(1), (2) Date Aug. 3, 2021,
PCT Pub. No. WO2020/165163, PCT Pub. Date Aug. 20, 2020.
Claims priority of application No. 102019201875.0 (DE), filed on Feb. 13, 2019.
Prior Publication US 2022/0107000 A1, Apr. 7, 2022
Int. Cl. F16F 15/14 (2006.01)
CPC F16F 15/145 (2013.01) [F16F 2222/08 (2013.01); F16F 2224/025 (2013.01); F16F 2228/001 (2013.01); F16F 2228/007 (2013.01); F16F 2230/007 (2013.01); F16F 2232/02 (2013.01); F16F 2236/08 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A rotary vibration damping assembly comprising a deflection mass carrier, which is rotatable about an axis of rotation, and a multiplicity of deflection masses which are mounted, following one another in a circumferential direction, on the deflection mass carrier so as to be deflectable out of a basic relative position with respect thereto, wherein, during deflection out of the basic relative position, a radial position of the deflection masses with respect to the axis of rotation changes, wherein the deflection masses are mounted by coupling formations on the deflection mass carrier so as to be deflectable in both circumferential directions proceeding from the basic relative position, wherein, in association with at least one deflection mass, there is provided an elastically deformable stop formation for ending a deflection movement of the deflection mass after a stop deflection is reached, wherein the elastically deformable stop formation comprises elastic stop material which is mounted fixedly with respect to the deflection mass carrier, wherein, in association with at least one deflection mass, the ratio R applies:
R=VE/E
where VE is a stop material volume which, in association with the deflection mass, is effective when the stop deflection is reached as a result of deformation of the elastic stop material, and E is an impact variable related to kinetic energy of the deflection mass when the stop deflection is reached, and wherein the following applies for the ratio R:
0.15×10−3 m2/kg≤R≤0.6×10−3 m2/kg.