Clutch diaphragm, in particular for a motor vehicle

A clutch diaphragm comprising a peripheral portion defining a Belleville ring, a central portion, and a circumferential root zone joining the central portion to the peripheral portion, the central portion being divided into radial fingers defining between them a corresponding number of radial slots and apertures, the apertures being in the vicinity of the said root zone of the fingers, with each aperture being open radially inwardly into a corresponding said slot, said peripheral portion defines a plurality of local anti-peaking deformations projecting axially and disposed in radial alignment with at least some of the said apertures, wherein each of said fingers defines a stiffening rib, the peripheral portion of the diaphragm further defining local stiffening deformations disposed radially outward of the said stiffening ribs.

A clutch diaphragm comprising a peripheral portion defining a Belleville ring, a central portion, and a circumferential root zone joining the central portion to the peripheral portion, the central portion being divided into radial fingers defining between them a corresponding number of radial slots and apertures, the apertures being in the vicinity of the said root zone of the fingers, with each aperture being open radially inwardly into a corresponding said slot, said peripheral portion defines a plurality of local anti-peaking deformations projecting axially and disposed in radial alignment with at least some of the said apertures, wherein each of said fingers has a stiffening rib defining a radial axis of symmetry, the peripheral portion of the diaphragm further defining pairs of local stiffening deformations associated with at least some of the said stiffening ribs, the local stiffening deformations of each pair being inclined on either side of the radial axis of symmetry of the associated stiffening rib.

A clutch diaphragm comprising a peripheral portion defining a Belleville ring, a central portion, and a circumferential root zone joining the central portion to the peripheral portion, the central portion being divided into radial fingers defining between them a corresponding number of radial slots and apertures, the apertures being in the vicinity of the said root zone of the fingers, with each aperture being open radially inwardly into a corresponding said slot, said peripheral portion defines a plurality of local anti-peaking deformations projecting axially and disposed in radial alignment with at least some of the said apertures, wherein the anti-peaking deformations are oblong in shape and extend generally circumferentially, and are spaced away from the corresponding said apertures, and wherein the anti-peaking deformations have a configuration defining two pointed sections joined together by a widened central portion.