US 12,005,562 B2
Telescopic tube assembly
Thomas Lin, Taichung (TW)
Assigned to WISE CENTER PRECISION APPLIANCE CO., LTD., Taichung (TW)
Filed by WISE CENTER PRECISION APPLIANCE CO., LTD., Taichung (TW)
Filed on Aug. 31, 2021, as Appl. No. 17/462,551.
Prior Publication US 2023/0063067 A1, Mar. 2, 2023
Int. Cl. B25G 1/04 (2006.01); F16B 7/10 (2006.01)
CPC B25G 1/04 (2013.01) [F16B 7/105 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A telescopic tube assembly comprising:
a first tube having a first positioning hole;
a second tube movably disposed in the first tube and having a plurality of second positioning holes arranged in a spaced manner along an axial direction thereof;
a first positioning unit including a base mounted to the first tube and having a first positioning portion and a through hole, and a handle having a handle portion and a cam portion connected with the handle portion and pivoted to the base, such that the handle is pivotable relative to the base between a lock position where the cam portion of the handle pushes the first positioning portion of the base for enabling the first positioning portion of the base to be pressed against an outer surface of the second tube, and an unlock position where the cam portion of the handle leaves the first positioning portion of the base for enabling the first positioning portion of the base to be loosen from the outer surface of the second tube; and
a second positioning unit including a cover disposed on the base to define an accommodation space therebetween communicating with the through hole, a pin axially movably disposed in the accommodation space and having a second positioning portion passing through the through hole of the base and the first positioning hole of the first tube, an elastic member disposed between the cover and the pin and pushing the pin in a direction away from the cover, and a button horizontally movably disposed in the base so as to be moveable between a press position where the pin is pushed by the button towards the cover for enabling the second positioning portion of the pin to be unlocked from the second positioning holes of the second tube, and a releasing position where the pin is pushed by the elastic member away from the cover for enabling the second positioning portion of the pin to be locked to one of the second positioning holes of the second tube,
wherein the pin further has a first outer flange and a second outer flange abutted with the first outer flange, the elastic member is disposed between the cover and the first outer flange of the pin, the button has an inclined plane pushing the second outer flange of the pin when the button is located at the press position and releasing the second outer flange of the pin when the button is located at the releasing position.