Patent ID: 6966530

Claim:
An end securing device for a telescopic tube having inner and outer tubes, the end securing device comprising: two vacuum suckers, each of the two vacuum suckers being located at one of two opposing ends of the telescopic tube and having: a) a suction cup movable between first and second positions and having: i) a conic suction space located on first end thereof; and ii) a driven post protruding from a second end thereof; b) a retaining piece engaging the second end of the suction cup on a first end thereof and having: i) a registration column located on a second end thereof and having a central through hole; and ii) a pair of opposite stop ribs symmetrically positioned on a wall of the central through hole; c) a control piece rotatably engaging the retaining piece and having: i) a coupling groove located at a first end thereof; ii) a pair of oblique conic sliding guide plates symmetrically positioned on an interior of the coupling groove and threadedly engaging the pair of opposite stop ribs; iii) a receiving chamber located at a second end thereof; and iv) an engaging through hole communicating with the coupling groove and the receiving chamber, the driven post being inserted into the engaging through hole; and d) an activation piece inserted into the receiving chamber of the control piece and connected to the driven post, wherein, when the suction cup is in the first position, the control piece and the retaining piece are rotated to engage the registration column with a stop ring of the control piece, the control piece moving the activation piece toward the first end of the suction cup making the conic suction space smaller; and, when the suction cup is in the second position, the control piece and the retaining piece are rotated to space the registration column apart from the stop ring, the control piece moving the activation piece away from the first end of the suction cup making the conic suction space larger.