Universal joint with protective cap, in which cap has annular rigid sector, annular lip sector, and inner and outer circumferential walls

摘要

The joint has a protective cap (3) between the holder and the ball shaft. The cap has an annular rigid sector (31) for fixing to the holder, an annular lip sector (32) to fit on the ball shaft, an external circumferential wall (33), an internal circumferential wall (34), and an S-shaped sector (35) connecting the internal and external circumferential walls.