US 11,746,832 B2
Torsion-damping device with spring seat with axial guidance
Pascal Dast, Cergy Pontoise (FR); and Gabriel Bouche, Cergy Pontoise (FR)
Assigned to VALEO EMBRAYAGES, Amiens (FR)
Appl. No. 17/43,142
Filed by VALEO EMBRAYAGES, Amiens (FR)
PCT Filed Mar. 28, 2019, PCT No. PCT/EP2019/057927
§ 371(c)(1), (2) Date Sep. 29, 2020,
PCT Pub. No. WO2019/185835, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 1852784 (FR), filed on Mar. 30, 2018.
Prior Publication US 2021/0131500 A1, May 6, 2021
Int. Cl. F16D 3/12 (2006.01); F16F 15/123 (2006.01)
CPC F16D 3/12 (2013.01) [F16F 15/123 (2013.01); F16F 15/12326 (2013.01); F16F 15/12346 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A torsion damping device for a vehicle transmission comprising a first rotary element and a second rotary element which are able to move in rotation relative to one another about an axis against the action of a spring acting circumferentially between these, a seat being positioned on one end of the spring, this seat comprising:
a frontal face designed to collaborate with the end of the spring;
a dorsal face designed to rest against the first and second rotary elements;
wherein the seat comprises a first axial guidance arrangement providing axial guidance between the first rotary element and the seat, and a second axial guidance arrangement providing axial guidance between the second rotary element and the seat,
wherein the first axial guidance arrangement is designed to provide axial guidance only between the first rotary element and the seat, and the second axial guidance arrangement is designed to provide axial guidance only between the second rotary element and the seat, and
wherein, of the first axial guidance arrangement and the second axial guidance arrangement, one is arranged only on a radially lower part of the seat and, of the first axial guidance arrangement and the second axial guidance arrangement, the other is arranged only on a radially upper part of the seat.