Worm drive with collar meshing on one side only - has rim around meshing collar to prevent disengagement

摘要

The worm (1) has one or more collars (6) meshing at one side only, each being fitted over the thrust plate (2) of a ball race (5). A rim is formed around the circumference of the collar (6) and prevents any radial movement relative to the thrust plate (2). The reim ensures the permanent connection between the collar (6) and the thrust plate (2), despite the tendency of the constantly rotating load from the work (1) to separate them.