Wheel rim for tyre without inner tube, has spoke heads fixed against groove on rear side of inner part of rim

摘要

The rim (20) comprises an inner part (21) and an outer part (210), the inner part having shoulders (211) protruding from two sides and containing several holes (22) in communication with a groove (25) formed on the rear side of the inner part. Spokes (30) with heads (31) are pushed through the holes in the inner part and rotated in order to fix their heads against the groove.