Torsional damping device

A device (100) comprising:-a first rotating element (1),-a second rotating element (2) rotationally coupled to an output element (5),-a third rotating element (3),-elastic means (11) interposed between the first rotating element (1) and the second rotating element (2) and comprising a first spring (13) extending between a first end (131) and a second end (132), a first spring (13) extending between a first end (141) and a second end (142) and a second spring (14) extending between the first end (141) and the second end (142),-a first flange (30) comprising a compression tab (32) arranged between the first end (131) of the first spring (13) and the first rotation element (1),-a second flange (40) comprising a compression tab (42) arranged between the second end (132) of the first spring (13) and the first rotation element (1), the first rotary element (1) moves the first end (131) towards the second end (132) of the first spring by means of the second flange (30) when it is rotationally movable counter-clockwi