Torsion damping device

Abstract

Abstract A torsion-damping device, especially for a clutch friction-disc, for coupling together two parts for rotation with a relative elastically-braked angular displacement, one of the said parts comprising a central plate provided with passage means, while the other part comprises side plates disposed on each side of the central plate and interconnected by spacing members passing through the passage means with an angular clearance defining said displacement in both directions, windows being formed facing each other in the said plates and being intended to receive torsiondamping springs for coupling the plates together in rotation, while offering an elastic resistance to the said displacement, some of the windows facing each other in the central plate and in the lateral plates having different angular lengths in order to cause the corresponding spring to act only after part of the displacement, so as to obtain a progressive variation of the torque as a function of the displacement. High transmissible torque and good progressivity are obtained by increasing the number of windows and arranging the spacing members and/or their passage means closer to the axis of rotation than the windows. In an alternative form, the said passage means are constituted by radial extensions of certain windows in the central plate towards the axis of rotation.

Inventors

• 👤 M Rist

Bibliographic Details