Height adjustment locking mechanism

Abstract

A height adjusting device is disclosed. The height adjusting device includes a supporting foot and a lifting nut coupled to the supporting foot. The device also includes a lifting rod coupled to the lifting nut by a threaded interaction. Further, the device includes a first mechanical combination of: a fixing plate coupled to the lifting nut and having a threaded aperture therethrough; a screw threaded through the threaded aperture and having a first screw end and a second screw end; a knob coupled to the first screw end; and a latching tooth coupled to the second screw end. Further still, the device includes a second mechanical combination like the first mechanical combination of the fixing plate, the screw, the knob, and the latching tooth. The fixing plate of the second mechanical combination is positioned at a different orientation than the first mechanical combination relative to the lifting nut.

What is claimed is: 
     
         1 . A height adjusting device, comprises:
 a supporting foot;   a lifting nut coupled to the supporting foot;   a lifting rod coupled to the lifting nut by a threaded interaction;   a first mechanical combination of:
 a fixing plate coupled to the lifting nut and having a threaded aperture therethrough, 
 a screw threaded through the threaded aperture and having a first screw end and a second screw end; 
 a knob coupled to the first screw end; and 
 a latching tooth coupled to the second screw end; and 
   a second mechanical combination like the first mechanical combination of the fixing plate, the screw, the knob, and the latching tooth, the fixing plate of the second mechanical combination being positioned at a different orientation than the first mechanical combination relative to the lifting nut.   
     
     
         2 . The height adjusting device of  claim 1 , wherein a bottom of the supporting foot is placed on a horizontal surface, and the upper end of the supporting foot is fixedly mounted with the lifting nut. 
     
     
         3 . The height adjusting device of  claim 1 , wherein the lifting rod supports a furniture surface. 
     
     
         4 . The height adjusting device of  claim 1 , wherein the fixing plates are fixedly mounted on the side of the lifting nut. 
     
     
         5 . The height adjusting device of  claim 1 , wherein the threaded hole is arranged in the middle of the fixing plate and the threaded hole is matched with the screw. 
     
     
         6 . The height adjusting device of  claim 1 , wherein the knobs are fixedly connected to the screw. 
     
     
         7 . The height adjusting device of  claim 1 , wherein there are two lifting nuts, and the locking tooth are located between the two lifting nuts. 
     
     
         8 . The height adjusting device of  claim 1 , wherein there are at least three supporting legs and the three supporting legs are arranged in an equilateral triangle around the lifting nut, 
     
     
         9 . A locking mechanism for locking a nut to a threaded rod preventing rotation, comprising:
 a nut configured to couple with the threaded rod;   a first mechanical combination of:
 a fixing plate coupled to the nut and having a threaded aperture therethrough, 
 a screw threaded through the threaded aperture and having a first screw end and a second screw end; 
 a knob coupled to the first screw end; and 
 a latching tooth coupled to the second screw end; and 
   a second mechanical combination like the first mechanical combination of the fixing plate, the screw, the knob, and the latching tooth, the fixing plate of the second mechanical combination being positioned at a different orientation than the first mechanical combination relative to the nut.   
     
     
         10 . The locking mechanism of  claim 9 , wherein the fixing plates are fixedly mounted on the side of the nut. 
     
     
         11 . The locking mechanism of  claim 9 , wherein the threaded hole is arranged in the middle of the fixing plate and the threaded hole is matched with the screw. 
     
     
         12 . The locking mechanism of  claim 9 , wherein the knobs are fixedly connected to the screw. 
     
     
         13 . The locking mechanism of  claim 9 , wherein there are two lifting nuts, and the locking tooth are located between the two lifting nuts. 
     
     
         14 . The locking mechanism of  claim 9 , wherein the threaded rod is a part of a furniture piece. 
     
     
         15 . A method of locking a nut to a threaded rod, comprising:
 providing a nut configured to couple with the threaded rod,   turning a knob, to engage a locking tooth with the threaded rod, of a first mechanical combination of:
 a fixing plate coupled to the nut and having a threaded aperture therethrough; 
 a screw threaded through the threaded aperture and having a first screw end and a second screw end; 
 a knob coupled to the first screw end, and 
 a latching tooth coupled to the second screw end; and 
 turning another knob, to engage another locking tooth with the threaded rod of a second mechanical combination like the first mechanical combination of the fixing plate, the screw, the knob, and the latching tooth, the fixing plate of the second mechanical combination being positioned at a different orientation than the first mechanical combination relative to the nut. 
   
     
     
         16 . The method of  claim 15 , wherein the fixing plates are fixedly mounted on the side of the nut. 
     
     
         17 . The method of  claim 15 , wherein the threaded hole is arranged in the middle of the fixing plate and the threaded hole is matched with the screw. 
     
     
         18 . The method of  claim 15 , wherein the knobs are fixedly connected to the screw. 
     
     
         19 . The method of  claim 15 , wherein there are two lifting nuts, and the locking tooth are located between the two lifting nuts. 
     
     
         20 . The method of  claim 15 , wherein the threaded rod is a part of a furniture piece.