Three-dimensional rotation unit for e.g. saddle of bicycle, has repositioning unit at saddle that contacts protrusion on upper surface of ball when repositioning spring connecting ball bearings to saddle is in released position

摘要

The rotation unit has a ball (2) mounted on a fastening unit (1) between a saddle and a framework. Ball bearings (3) connected with the saddle via a repositioning spring (4) rest on the ball surface. A contact is established between a repositioning unit (8) at the saddle and a protrusion on an upper surface of the ball when the spring is in released position, in which the protrusion is made of flexible material.