Patent ID: 8776810

Claim:
A stick, comprising: an upper connection tube; a lower connection tube having a diameter smaller than a diameter of the upper connection tube, and being inserted into the upper connection tube; and a gripping tube being fixed to a front end portion of the upper connection tube, wherein the gripping tube has a circular-arc engagement portion formed by a front-end cut portion of the gripping tube and a cam lever for tightening or loosening the circular-arc engagement portion, the circular-arc engagement portion is tightened or loosened by an operation of the cam lever so that the lower connection tube is fixed in a pressurized and gripped state or is released in an un-pressurized and un-gripped state, the lower connection tube includes a main tube portion and a contracted tube portion having an outer diameter smaller than an outer diameter of the main tube portion, the contracted tube portion is formed in the lower connection tube at a portion with which the circular-arc engagement portion comes into contact when the lower connection tube is pressed into the upper connection tube so as to reach a shortened position, and has an axial length larger than an axial length of the circular-arc engagement portion, when the cam lever is locked at a lengthened position in which the lower connection tube is taken out from the upper connection tube for using the stick, the circular-arc engagement portion comes into contact with the main tube portion, and when the cam lever is locked at the shortened position, the circular-arc engagement portion comes into contact with the contracted tube portion having a small outer diameter.