| 摘要 |
PURPOSE: A locking system for multi stage stick is provided to prevent a multi stage telescopic pipe from being deviated from their proper positions by providing a sleeve that is attached to upper and outer portion of the telescopic pipe so as to be engaged with a locking tap. CONSTITUTION: The locking system for multi stage stick includes a first sleeve(111) that is attached to upper and outer portion of a telescopic pipe(105) so as to be engaged with a locking tap(103) formed at a mold of a fixing pipe(101). The first sleeve prevents a multi stage telescopic pipe from being deviated from their proper positions. The multi stage telescopic pipe includes a first pipe coupled with the fixing pipe and a second pipe coupled in the first pipe. A second sleeve is provided at the lower and inner portion of the fixing pipe. A third sleeve is also provided at the lower and inner portion of the fixing pipe. An engagement portion is provided so as to engage the second and third sleeves at a fixed portion connecting the telescopic pipe and the upper and outer portion of the telescopic pipe, respectively.
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