US 12,234,878 B2
Torsion damper and clutch disk
Gabriel Bouche, Cergy Pontoise (FR); Pascal Dast, Cergy Pontoise (FR); Roel Verhoog, Cergy Pontoise (FR); Olivier Marechal, Cergy Pontoise (FR); and Bernard Dubois, Cergy Pontoise (FR)
Assigned to VALEO EMBRAYAGES, Amiens (FR)
Appl. No. 17/599,250
Filed by VALEO EMBRAYAGES, Amiens (FR)
PCT Filed Mar. 30, 2020, PCT No. PCT/EP2020/058931
§ 371(c)(1), (2) Date Sep. 28, 2021,
PCT Pub. No. WO2020/201204, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 19 03377 (FR), filed on Mar. 29, 2019.
Prior Publication US 2022/0178421 A1, Jun. 9, 2022
Int. Cl. F16F 15/129 (2006.01)
CPC F16F 15/1292 (2013.01) 20 Claims
OG exemplary drawing
 
1. A torsion damper for a vehicle powertrain, the damper comprising:
a first element being able to rotate about an axis of rotation, the first element comprising at least one support element,
a second element movable in rotation with respect to the first element about the axis of rotation,
springs mounted between the first element and the second element so as to compress to allow relative rotation about the axis of rotation between the first element and the second element,
a friction device comprising a friction washer provided with at least one fixing portion rigidly fixed in rotation on the support element of the first element, the friction washer having a friction portion having a friction track backed against a dorsal face of the friction portion; and an elastic washer arranged axially between the first element and the dorsal face of the friction portion, each fixing portion for fixing to the first element being connected to the friction portion by a flexible element allowing axial displacement of the dorsal face of the friction portion relative to the support element of the first element,
wherein each fixing portion is mounted so as to be locked in rotation with one of the support elements, without angular play.