| 摘要 |
<p>There is a telescopic tube for dust collector, which contains outer tube, inner tube and a joint knotting on one end of outer tube. Between the outer tube and the inner tube there is stop mechanism, which contains multi stop trough, stop parts on the outer surface and arranged along with the axes direction of the inner tube. The stop parts have at least one triangular vertical section, and when the stop parts are locked, the triangular portions are anastomosing, this makes the stop parts cooperate with guidance and chuck one another. So the outer tube and the inner tube could not slide relatively along with the axial direction under locked state, and this insure the dust collector with the telescopic tube more safe and reliable.</p> |
