Foldable height-adjustable desk workstation

Abstract

The present invention relates to an office appliance, and particularly discloses a foldable height-adjustable desk workstation, which comprises a workstation desktop, upper workstation support legs, lower workstation support legs, lifters, and locking mechanisms. In the foldable height-adjustable desk workstation with the above-mentioned structure, the workstation desktop can be controlled by the lifters arranged between the upper workstation support legs and the lower workstation support legs to vertically go up or down, and the workstation desktop can be locked at any height position between an upper limit position and a lower limit position by the locking mechanisms. A synchronous link mechanism is arranged between locking bars of the two sets of locking mechanisms, the two sets of locking mechanisms can be synchronously unlocked by a spanner connected to any one of the locking bars, single-hand operation can ensure the balanced raising and lowering of the workstation desktop, so that the other hand can synchronously conduct other actions such as applying raising or lowering pressure on the workstation desktop, and thereby the convenience and experience of operating the workstation desktop are improved.

1 - 11 . (canceled) 
     
     
         12 . A foldable height-adjustable desk workstation, comprising:
 a workstation desktop;   upper workstation support legs, the pair of upper workstation support legs are arranged in parallel on both sides of the lower surface of the workstation desktop;   lower workstation support legs, the pair of lower workstation support legs are respectively arranged under the pair of upper workstation support legs; and   lifters, the pair of lifters are respectively arranged between the upper workstation support leg and lower workstation support leg of the same side, each lifter at least comprises a first slider, and the interior of each upper workstation support leg is provided with a first slide cavity matching the first slider along the length direction;   characterized by further comprising locking mechanisms, each locking mechanism comprises a locking bar arranged in the first slide cavity, both ends of the locking bars are respectively articulated with both ends of the upper workstation support legs, and lockup mechanisms are arranged between the locking bars and the first sliders; a synchronous link mechanism is arranged between the locking bars in the first slide cavities of the pair of upper workstation support legs, and a spanner is connected to the locking bar at one side.   
     
     
         13 . The foldable height-adjustable desk workstation of  claim 12 , wherein each lifter further comprises a main support rod and an auxiliary support rod, and the main support rod and the auxiliary support rod are arranged crosswise and articulated with each other at the junction; the upper ends of the main support rods are articulated with the first sliders, and the lower ends of the main support rods are articulated with the lower workstation support legs; the interior of each lower workstation support leg is provided with a second slide cavity, a second slider is arranged in the second slide cavity, and the sliding direction of the second sliders in the second slide cavities are parallel to the sliding direction of the first sliders in the first slide cavities; the upper ends of the auxiliary support rods are articulated with the upper workstation support legs, and the lower ends of the auxiliary support rods are articulated with the second sliders. 
     
     
         14 . The foldable height-adjustable desk workstation of  claim 13 , wherein first springs are arranged in the first slide cavities, and each first spring is located between the first slider and one end of the first slide cavity; second springs are arranged in the second slide cavities, and each second spring is located between the second slider and one end of the second slide cavity. 
     
     
         15 . The foldable height-adjustable desk workstation of  claim 14 , wherein the first springs and/or the second springs are variable-pitch springs. 
     
     
         16 . The foldable height-adjustable desk workstation of  claim 15 , wherein the elastic coefficient of the ends, close to the first sliders and/or the second sliders, of the variable-pitch springs is less than the elastic coefficient of the ends far from the first sliders and/or the second sliders. 
     
     
         17 . The foldable height-adjustable desk workstation of  claim 12 , wherein each lockup mechanism comprises a plurality of fastening notches or fastening teeth arranged on the locking bar along the length direction of the locking bar and a lockup portion arranged on the first slider and matching the fastening notches or fastening teeth, and an avoiding area is arranged at a position close to the lockup portion. 
     
     
         18 . The foldable height-adjustable desk workstation of  claim 15 , wherein each lockup mechanism comprises a plurality of fastening notches or fastening teeth arranged on the locking bar along the length direction of the locking bar and a lockup portion arranged on the first slider and matching the fastening notches or fastening teeth, and an avoiding area is arranged at a position close to the lockup portion. 
     
     
         19 . The foldable height-adjustable desk workstation of  claim 12 , wherein the synchronous link mechanism comprises a pair of first links respectively connected to the locking bars and a pair of second links for being connected to the pair of links, one end of each first link is fixedly connected to the locking bar, and both ends of the second links are respectively articulated with the ends, far from the locking bars, of the pair of first links. 
     
     
         20 . The foldable height-adjustable desk workstation of  claim 17 , wherein the synchronous link mechanism comprises a pair of first links respectively connected to the locking bars and a pair of second links for being connected to the pair of links, one end of each first link is fixedly connected to the locking bar, and both ends of the second links are respectively articulated with the ends, far from the locking bars, of the pair of first links. 
     
     
         21 . The foldable height-adjustable desk workstation of  claim 18 , wherein the synchronous link mechanism comprises a pair of first links respectively connected to the locking bars and a pair of second links for being connected to the pair of links, one end of each first link is fixedly connected to the locking bar, and both ends of the second links are respectively articulated with the ends, far from the locking bars, of the pair of first links. 
     
     
         22 . The foldable height-adjustable desk workstation of  claim 12 , wherein elastic mechanisms are arranged on the locking bars or between the locking bars and the upper workstation support legs. 
     
     
         23 . The foldable height-adjustable desk workstation of  claim 17 , wherein elastic mechanisms are arranged on the locking bars or between the locking bars and the upper workstation support legs. 
     
     
         24 . The foldable height-adjustable desk workstation of claim  10 , wherein elastic mechanisms are arranged on the locking bars or between the locking bars and the upper workstation support legs. 
     
     
         25 . The foldable height-adjustable desk workstation of  claim 23 , wherein the elastic mechanisms are torsional springs arranged on the locking bars, and both ends of the torsional springs are fixed. 
     
     
         26 . The foldable height-adjustable desk workstation of  claim 24 , wherein the elastic mechanisms are torsional springs arranged on the locking bars, and both ends of the torsional springs are fixed. 
     
     
         27 . The foldable height-adjustable desk workstation of  claim 12 , wherein a keyboard tray is arranged under the workstation desktop, and brackets are arranged between the keyboard tray and the workstation desktop. 
     
     
         28 . The foldable height-adjustable desk workstation of  claim 25 , wherein a keyboard tray is arranged under the workstation desktop, and brackets are arranged between the keyboard tray and the workstation desktop. 
     
     
         29 . The foldable height-adjustable desk workstation of  claim 26 , wherein a keyboard tray is arranged under the workstation desktop, and brackets are arranged between the keyboard tray and the workstation desktop. 
     
     
         30 . The foldable height-adjustable desk workstation of  claim 21 , wherein the keyboard tray is slidably connected to the brackets, and the sliding direction is parallel to the sliding direction of the first sliders. 
     
     
         31 . The foldable height-adjustable desk workstation of  claim 29 , wherein the keyboard tray is slidably connected to the brackets, and the sliding direction is parallel to the sliding direction of the first sliders.