Torsion damper and clutch disc

Torsion damper, which is intended to equip a vehicle powertrain, the damper comprising:

• a first element rotatable about an axis of rotation,
• a second element rotatable with respect to the first element about the axis of rotation,
• the second element comprising a first lateral washer and a second lateral washer that are mounted coupled in rotation about the axis and spaced axially from each other, and the first element comprising an intermediate disc arranged axially between the first and second lateral washer,
• springs mounted between the first element and the second element so as to compress to allow relative rotation, about the axis, between the first element and the second element,
• a first friction device comprising a first friction washer provided with at least one fixing portion fixed in a rotationally rigid manner to the first element or to the second element, the first friction washer having a friction portion arranged between the first lateral washer and the first element;
• and a first elastic washer arranged axially between the first element and the friction portion of the first friction washer,
• a second friction device comprising a second friction washer provided with at least one fixing portion fixed in a rotationally rigid manner to the first element or to the second element, the second friction washer having a friction portion arranged between the second lateral washer and the first element;
• and a second elastic washer arranged axially between the first element and the friction portion of the second friction washer.