Electric lifting desk with three-section legs

Abstract

A three-segment electric lifting desk includes a desktop and supporting legs. The supporting legs are connected to the bottom of the desktop. A main beam is provided at a bottom of the desktop, and two ends of the main beam are respectively connected to one supporting leg. The supporting leg is formed by connecting three tubes of different diameters, and the three tubes are a first tube, a second tube and a third tube, respectively. The three tubes are sequentially nested and connected to each other, and an interconnected cavity is formed inside the tubes. An electric pushing rod is provided in the cavity. The three-segment electric lifting desk has the characteristics of simple structure, stable lifting process, freely space retracting and expanding, stable driving of lifting and lowering, etc.

What is claimed is: 
     
         1 . An electric lifting desk with three-section legs, comprising: a desktop and at least two supporting legs, wherein the supporting legs are connected to a bottom of the desktop, a main beam is provided at the bottom of the desktop, a first end of the main beam is connected to a first supporting leg of the at least two supporting legs, and a second end of the main beam is connected to a second supporting leg of the at least two supporting legs; each of the at least two supporting legs is formed by connecting three tubes of different diameters, and the three tubes include a first tube, a second tube and a third tube, respectively; the three tubes are sequentially nested and connected to each other, and an interconnected cavity is formed inside the three tubes; an electric pushing rod is provided in the interconnected cavity;
 the main beam comprises two cross rods: a left cross rod and a right cross rod, respectively; a supporting mechanism is provided between the left cross rod and the right cross rod, a pair of motors are provided on the supporting mechanism, and each motor is connected to the electric pushing rod;   a controller is provided between the motors, and the controller is connected to the motors on both sides.   
     
     
         2 . The electric lifting desk with the three-section legs of  claim 1 , wherein, the desktop is divided into a fixing area and folding areas, and the folding areas are located on both sides of the fixing area. 
     
     
         3 . The electric lifting desk with the three-section legs of  claim 2 , wherein, the fixing area is connected to each folding area by a hinge. 
     
     
         4 . The electric lifting desk with the three-section legs of  claim 2 , wherein, the fixing area is fixedly connected to each folding area by a pin roll. 
     
     
         5 . The electric lifting desk with the three-section legs of  claim 1 , wherein, a motor fixing plate is provided between the left cross rod and the right cross rod. 
     
     
         6 . The electric lifting desk with the three-section legs of  claim 1 , wherein, a side plate is provided on the main beam, and a plurality of screw holes are provided on the side plate. 
     
     
         7 . The electric lifting desk with the three-section legs of  claim 1 , wherein, a remote control button is hung at the bottom of the desktop, and the remote control button is connected to the controller. 
     
     
         8 . The electric lifting desk with the three-section legs of  claim 1 , wherein, the at least two supporting legs are connected to a bottom plate. 
     
     
         9 . The electric lifting desk with the three-section legs of  claim 8 , wherein, the bottom plate is mounted with an adjusting foot. 
     
     
         10 . The electric lifting desk with the three-section legs of  claim 8 , wherein, reinforcing strips are provided on a bottom surface of the bottom plate. 
     
     
         11 . The electric lifting desk with the three-section legs of  claim 2 , wherein, a motor fixing plate is provided between the left cross rod and the right cross rod. 
     
     
         12 . The electric lifting desk with the three-section legs of  claim 3 , wherein, a motor fixing plate is provided between the left cross rod and the right cross rod. 
     
     
         13 . The electric lifting desk with the three-section legs of  claim 4 , wherein, a motor fixing plate is provided between the left cross rod and the right cross rod. 
     
     
         14 . The electric lifting desk with the three-section legs of  claim 2 , wherein, a side plate is provided on the main beam, and a plurality of screw holes are provided on the side plate. 
     
     
         15 . The electric lifting desk with the three-section legs of  claim 3 , wherein, a side plate is provided on the main beam, and a plurality of screw holes are provided on the side plate. 
     
     
         16 . The electric lifting desk with the three-section legs of  claim 4 , wherein, a side plate is provided on the main beam, and a plurality of screw holes are provided on the side plate. 
     
     
         17 . The electric lifting desk with the three-section legs of  claim 2 , wherein, a remote control button is hung at the bottom of the desktop, and the remote control button is connected to the controller. 
     
     
         18 . The electric lifting desk with the three-section legs of  claim 3 , wherein, a remote control button is hung at the bottom of the desktop, and the remote control button is connected to the controller. 
     
     
         19 . The electric lifting desk with the three-section legs of  claim 4 , wherein, a remote control button is hung at the bottom of the desktop, and the remote control button is connected to the controller. 
     
     
         20 . The electric lifting desk with the three-section legs of  claim 2 , wherein, the at least two supporting legs are connected to a bottom plate.