Height adjustable angled desks

Abstract

Height adjustable angled desks are disclosed herein. An example height adjustment system includes a drive system including: a worm gearbox; a motor operatively coupled to the worm gearbox to drive the worm gearbox; and an output shaft operatively coupled to the worm gearbox, the output shaft extending in a first horizontal direction; and an interconnection gearbox coupled to the drive system, the interconnection gearbox to convert rotation of the output shaft to rotation of an interconnection shaft in a second horizontal direction different than the first horizontal direction, the interconnection gearbox including a first cover coupled to a second cover of the worm gearbox, the output shaft extending through the interconnection gearbox.

What is claimed is: 
     
         1 . A height adjustment system for a surface, the height adjustment system comprising:
 a drive system including:
 a worm gearbox; 
 a motor operatively coupled to the worm gearbox to drive the worm gearbox; and 
 an output shaft operatively coupled to the worm gearbox, the output shaft extending in a first horizontal direction; and 
   an interconnection gearbox coupled to the drive system, the interconnection gearbox to convert rotation of the output shaft to rotation of an interconnection shaft in a second horizontal direction different than the first horizontal direction, the interconnection gearbox including a first cover coupled to a second cover of the worm gearbox, the output shaft extending through the interconnection gearbox.   
     
     
         2 . The height adjustment system of  claim 1 , wherein the worm gearbox includes a worm gear assembly to transmit rotation of the motor to the rotation of the output shaft. 
     
     
         3 . The height adjustment system of  claim 2 , wherein the worm gear assembly includes:
 a worm coupled to the motor; and   a gear coupled to the output shaft, the gear including a plurality of teeth that mesh with threads of the worm.   
     
     
         4 . The height adjustment system of  claim 3 , wherein the gear includes a bore, the output shaft extending through the bore. 
     
     
         5 . The height adjustment system of  claim 3 , wherein the worm is formed of steel, and the gear is formed of a high-performance composite material. 
     
     
         6 . The height adjustment system of  claim 3 , wherein a transmission ratio of the gear to the worm is 20:1. 
     
     
         7 . The height adjustment system of  claim 2 , wherein the worm gear assembly is self-locking. 
     
     
         8 . The height adjustment system of  claim 1 , wherein the motor is a silent motor. 
     
     
         9 . The height adjustment system of  claim 1 , wherein the interconnection gearbox includes helical teeth engaging the interconnection shaft to convert the rotation of the output shaft to rotation of the interconnection shaft. 
     
     
         10 . The height adjustment system of  claim 1 , further including a leg gearbox to transmit rotation of the output shaft to rotation of a rod in a vertical direction, the leg gearbox associated with a leg of the surface and including a third cover coupled to the first cover. 
     
     
         11 . The height adjustment system of  claim 1 , wherein the output shaft is coupled to first leg gearboxes and the interconnection shaft is coupled to a second leg gearbox, the first leg gearbox with a first leg of the surface and the second leg gearbox associated with a second leg of the surface. 
     
     
         12 . The height adjustment system of  claim 11 , wherein the first leg gearboxes are coupled to first actuators and the second leg gearbox is coupled to a second actuator, the first leg gearboxes and the first actuators to convert the rotation of the output shaft to linear motion in first vertical directions, the second leg gearbox and the second actuator to convert the rotation of the interconnection shaft to linear motion in a second vertical direction. 
     
     
         13 . A height adjustment apparatus for a surface, the height adjustment apparatus comprising:
 a motor;   a worm gearbox operatively coupled to the motor;   an output shaft coupled to the worm gearbox, the motor to drive the output shaft via the worm gearbox; and   an interconnection gearbox including a first cover attached to a second cover of the worm gearbox, the interconnection gearbox to convert rotation of the output shaft in a first horizontal direction to rotation of an interconnection shaft in a second horizontal direction different than the first horizontal direction, the output shaft extending through the worm gearbox and the interconnection gearbox.   
     
     
         14 . The height adjustment apparatus of  claim 13 , wherein the interconnection gearbox includes helical teeth engaging the interconnection shaft to convert the rotation of the output shaft to rotation of the interconnection shaft. 
     
     
         15 . The height adjustment apparatus of  claim 13 , wherein the worm gearbox includes:
 a worm coupled to the motor; and   a worm wheel coupled to the output shaft, the worm wheel including a plurality of teeth that mesh with threads of the worm.   
     
     
         16 . The height adjustment apparatus of  claim 15 , wherein the worm and the worm wheel are self-locking. 
     
     
         17 . The height adjustment apparatus of  claim 15 , wherein a transmission ratio of the worm wheel to the worm is 20:1. 
     
     
         18 . The height adjustment apparatus of  claim 15 , wherein the worm is formed of steel, and the worm wheel is formed of a high-performance composite material. 
     
     
         19 . The height adjustment apparatus of  claim 13 , wherein the motor is a silent motor. 
     
     
         20 . The height adjustment apparatus of  claim 13 , further including a leg gearbox to transmit rotation of the output shaft to rotation of a rod in a vertical direction, the leg gearbox associated with a leg of the surface and including a third cover coupled to the first cover.