Sealing bellows for transmission joints in automotive vehicles.

摘要

1. A sealing bellows (6) for vehicle transmission joints of the type comprising a body having a corrugated wall of given thickness and two end collars (7, 8) which are intended to be fitted respectively on the driving and driven parts of the joint, one of which is formed by a shaft, characterised in that the internal surface (11) of the end collar (8) which is towards the external surface of the shaft (5) has at least one groove (12) for filling the bellows with grease and for the discharge of air therefrom and that said groove opens on respective sides of an annular rib (10) carried by the internal surface of the collar and capable of coming into axial retaining contact with the sides of a groove (9) at the periphery of the shaft (5).