Protective bellow for a drive

摘要

The transmission protection bellows comprises a truncated flexible tubular body open at its ends. The tube two end bases have fixing support surfaces and its central part comprises successive folds. Each fold (7) is formed by two walls (8,9) separated by a junction zone (10). The bellows has an annular support surface (4) on its small base (3) and several successive annular support surfaces (5a,5b,5c) of different diameter near its large base (2). Each annular support surface is reinforced by an internal rib (11) in the bellows internal surface. The wall (8) on the small base side is inclined to the bellows axis at an angle between 50 degrees and 70 degrees . The wall on the large base side is inclined at an angle between 1430 degrees and 140 degrees .