SPHERICAL POLYGON COUPLING

摘要

The coupling includes a coupling block (1) with a spherical cavity (1a) larger than a hemisphere, a bead member (2) larger than the hemisphere and a rod (3) fixed to the bead member. A groove (13) is formed in the opening portion of the cavity (1a), which is capable of receiving the rod as it is tilted with the angle of &phgr; from Y axis. The other groove (14) crossing to the groove (13) is formed in the opening portion of the cavity (1a) so that the bead member (2) may be detached from the coupling block (1).