Connector for stick

Abstract

A locking mechanism for poles includes a support rod, inserted into a first unit shaft at a first end thereof and locked to a second unit shaft at a second end thereof, with threads formed around the outer circumferential surface thereof; and a pressure locking unit movably engaged with the threads of the support rod and having longitudinal slits formed to open in one direction and at least two pressure parts formed in a longitudinal direction. The locking pressure of the pressure locking unit is imposed on the unit shafts at multiple longitudinally spaced points, thus dispersing or distributing the locking strength in the longitudinal direction and increasing both the locking strength and the resistance against both longitudinal compressive force and longitudinal tensile force, thereby preventing the locked unit shafts from suddenly slipping towards each other.

1 . A locking mechanism for poles, comprising:
 a support rod inserted into a first unit shaft at a first end thereof and locked to a second unit shaft at a second end thereof, with threads formed around part of an outer circumferential surface of the support rod; and   a pressure locking unit movably engaged with the threads of the support rod through screw-type engagement, with at least one pair of longitudinal slits formed in the pressure locking body such that the slits are open in one direction, and with two or more pressure parts formed in the pressure locking body in a longitudinal direction, wherein the pressure locking unit comprises:   a pressure locking body having a pair of first slits and a pair of second slits, which are formed in the pressure locking body such that the first and second slits are angularly spaced apart from each other at right angles, wherein the pressure locking body comprises:   an annular-shaped first pressure part formed around a first edge of the pressure locking body and an annular-shaped second pressure part spaced apart from the first pressure part; and   an annular-shaped third pressure part formed around a second edge of the pressure locking body and an annular-shaped fourth pressure part spaced apart from the third pressure part, wherein   the first and second slits are opened in opposite directions, the support rod is provided both with a first tapered shoulder part at a location near a first end of the threads and with a second tapered shoulder part at a location near a second end of the threads, and the pressure locking body is provided on an inner circumferential surface thereof with a tapered seat part so as to correspond to the first tapered shoulder part of the support rod.