Height adjustable device for a retractable tube assembly
First Claim
1. A height adjustable tube assembly comprising:
- an inner tube (10);
an outer tube (20) in which the inner tube (10) is retractably inserted;
a height adjustable device (30) received in the inner tube (10) and including a base (31) which is fixed in the inner tube (10) and two grooves (310, 311) defined in the base (31), two stop plates (32, 33) respectively received in the two grooves (310, 311) and two respective first ends (320, 330) of the two stop plates (32, 33) extending through apertures (11) defined through the inner tube (10) and being in contact with two respective insides of the outer tube (20), a movable member (34) movably connected to the base (31) and including a driving portion (340) which pivots two respective second ends (321, 331) of the two stop plates (32, 33), a cable (35) having a first end (351) thereof fixed to a first end (343) of the movable member (34) so as to pull the movable member (34) in a direction away from the outer tube (20), a resilient member (36) connected between a second end (344) of the movable member (34) and the base (31) so as to pull the movable member (34) in a direction toward the outer tube (20).
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Accused Products
Abstract
A height adjustable device is received in the inner tube which is retractably inserted in an outer tube, and includes a base which is fixed in the inner tube and two stop plates are pivotably connected of the base. Two respective first ends of the two stop plates extend through apertures defined through the inner tube and are in contact with two respective insides of the outer tube so as to position the inner tube. A member is movably connected to the base and includes a driving portion for pivoting two respective second ends of the two stop plates. A cable is connected between the movable member and a pivotable member fixed to the inner tube. The pivotable member is pivoted to pull the cable and the two stop plates are pivoted inward so that the inner tube can be freely moved in the outer tube.
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Citations
8 Claims
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1. A height adjustable tube assembly comprising:
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an inner tube (10); an outer tube (20) in which the inner tube (10) is retractably inserted; a height adjustable device (30) received in the inner tube (10) and including a base (31) which is fixed in the inner tube (10) and two grooves (310, 311) defined in the base (31), two stop plates (32, 33) respectively received in the two grooves (310, 311) and two respective first ends (320, 330) of the two stop plates (32, 33) extending through apertures (11) defined through the inner tube (10) and being in contact with two respective insides of the outer tube (20), a movable member (34) movably connected to the base (31) and including a driving portion (340) which pivots two respective second ends (321, 331) of the two stop plates (32, 33), a cable (35) having a first end (351) thereof fixed to a first end (343) of the movable member (34) so as to pull the movable member (34) in a direction away from the outer tube (20), a resilient member (36) connected between a second end (344) of the movable member (34) and the base (31) so as to pull the movable member (34) in a direction toward the outer tube (20). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification