US 11,674,553 B2
Torsion damping device with main damper and additional damper
Didier Bagard, Amiens (FR); Pierre Boucheny, Amiens (FR); David Denizot, Amiens (FR); and Olivier Marechal, Amiens (FR)
Assigned to VALEO EMBRAYAGES, Amiens (FR)
Appl. No. 16/649,458
Filed by VALEO EMBRAYAGES, Amiens (FR)
PCT Filed Sep. 20, 2018, PCT No. PCT/FR2018/052292
§ 371(c)(1), (2) Date Mar. 20, 2020,
PCT Pub. No. WO2019/058057, PCT Pub. Date Mar. 28, 2019.
Claims priority of application No. 17 58776 (FR), filed on Sep. 22, 2017; and application No. 18 51173 (FR), filed on Feb. 12, 2018.
Prior Publication US 2020/0256396 A1, Aug. 13, 2020
Int. Cl. F16D 3/12 (2006.01); F16F 15/123 (2006.01)
CPC F16D 3/12 (2013.01) [F16F 15/12373 (2013.01); F16F 2232/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. Torsion damping device for a vehicle transmission line, comprising:
a first rotating element for transmitting a torque;
a second rotating element for transmitting the torque;
a main damper including at least one main spring inserted between the first rotating element and the second rotating element and permitting, when it deforms, the relative rotation about an axis of rotation of the first and second rotating elements;
the torsion damping device including:
a third rotating element for transmitting the torque mounted rotating in relation to the first and second rotating elements about said axis of rotation;
an additional damper including at least one additional spring mounted both in the first rotating element and in the third rotating element;
the second and third rotating elements respectively including a first stop and a complementary second stop, arranged so that: when the angular displacement between the first and second rotating elements is greater than zero and less than a first threshold of angular displacement between the first and second rotating elements from a resting relative angular position of the first and second rotating elements in which no torque is transmitted, said at least one main spring is compressed while the third rotating element is rotatably coupled to the first rotating element via the uncompressed additional spring; and when the angular displacement between the first and second rotating elements is greater than said first threshold, the first stop and the complementary second stop are pressing against each other, the at least one main spring being compressed and the at least one additional spring being compressed in parallel between the first rotating element and the third rotating element.