| 摘要 |
<p>A telescoping dust pipe used in a suction cleaner comprises an outer pipe with a stop sleeve at its front end, an inner pipe provided with guiding grooves and catching notches. Guiding ribs are provided in the inside wall of the stop sleeve to insert into the guiding grooves. A catching member is arranged in the catching notch. The stop sleeve is provided with a projecting stage, and the outer pipe is provided with a matching projecting portion, which surrounds the projecting stage. A sliding slot having an opening therein to release and accommodate the catch member is provided in the projecting stage. A sliding body, which has two springs at both ends and two oblique grooves in M-shape from lateral view formed at its bottom, is located in the sliding slot. A pressing portion is between the oblique grooves to press the catching member. The outer pipe is provided with a handle connecting and moving the sliding body. The handle can move in bidirectional way due to the sliding body with the M-shape oblique grooves, thus the dust pipe has simple structure. Also, the invention can save material, thereby reducing the manufacture cost.</p> |
