Patent ID: 6012562
Filing Date: 2000-01-11
Classification: F16D

Abstract:
A clutch mechanism comprising a hollow cover plate (7) with a base (8) having a central hole, for fastening the clutch mechanism on a reaction plate (1), a diaphragm (6) with an outer periphery in a form of a belleville ring (60), mounted pivotally on the cover plate by means of posts (20), a pressure plate (5) acted on by the diaphragm (6) and having an abutment seat (17) for abutment of the outer periphery of the belleville ring (60) of the diaphragm (6), and tangentially oriented resilient tongues (16) coupling the pressure plate (5) to the cover plate (7) in rotation but with axial mobility, wherein the posts (20) are fixed to the base (8) of the cover plate (7) and have heads (21) which are profiled so as to constitute a secondary abutment (21') for an inner periphery of the belleville ring (60) of the diaphragm (6), in facing relationship with a primary abutment (19) carried by the base (8) of the cover plate (7), the posts (20) being located radially inwardly of the abutment seat (17) of the pressure plate (5), and wherein the diaphragm (6) has widened apertures (18) in a vicinity of the inner periphery of the belleville ring (60) of the diaphragm (6), with the posts (20) extending through these apertures, wherein the resilient tongues (16) are fitted axially between the pressure plate 5 and the heads (21) of the posts 20 and radially inwardly of the abutment seat (17) of the pressure plate (5), and the tongues (16) are fixed to the base (8) of the cover plate (7) by means of spacers (22, 23) extending through widened apertures (18) of the diaphragm (6), and the spacers (22. 23) are longer in an axial direction than the posts (20).