Patent ID: 6544087
Filing Date: 2003-04-08
Classification: B63H

Abstract:
An adjustable fixing structure of a paddle for adjusting a length of the paddle, said paddle having an outer tube, an inner tube and a tightening means for tightening the outer tube and inner tube, whereinthe tightening means is formed by a positioning ring at one end portion of the outer tube and an engaging portion at one end portion of the inner tube; the positioning ring is buckled to the engaging portion; one end portion of the positioning ring is protruded with an eccentric buckle, and one end of the buckle is protruded with an elastomer; an interior of the engaging portion has a stepped through hole; one small end of the through hole has an eccentric embedded hole and an inner side of the embedded hole has an edge for resisting against the elastomer of the positioning ring; wherein the eccentric buckle of the positioning ring is inserted into the through hole of the engaging portion; the elastomer of the positioning ring is exactly inserted into the eccentric embedded hole of the engaging portion; thereby, when the engaging portion rotates, the engaging portion will separate from a center of the positioning ring gradually due to eccentricity so that a center of the engaging portion will not align with a center of the positioning ring, thereby, a lateral side of the engaging portion will apply a force to a lateral side of the positioning ring; thus, the outer tube and inner tube are tightly coupled with one another.