Supporting shelf

Abstract

A supporting shelf includes a bearing seat, a first supporting arm, a second supporting arm, a third supporting arm and a setting seat. The bearing seat is pivotally connected with an end of the first supporting arm allowing the supporting shelf to swing left or right. An end of the second supporting arm is connected with another end of the first supporting arm through a pin-connected mechanism. An end of the third supporting arm is connected with another end of the second supporting arm. The setting seat is pivotally connected with a joint. The joint is pivotally connected with another end of the third supporting arm. The setting seat is for fixing a LCD moving up, down, left or right through the joint, whereby the length of the supporting shelf is increased, and the action area of the LCD is extended and is improved agility.

1 . A supporting shelf, comprising: 
 A bearing seat;    At least a first supporting arm having an end pivotally connected with the bearing seat;    A first air cylinder defined in an inner portion of the first supporting arm and through a first fixing screw rod to adjust the moment arm of the first air cylinder for adjusting a bearing of the supporting shelf;    At least a second supporting arm having an end pivotally connected with another end of the first supporting arm through a pin-connected mechanism;    A second air cylinder defined in an inner portion of the second supporting arm and through a second fixing screw rod to adjust the moment arm of the second air cylinder for adjusting a bearing of the supporting shelf;    At least a third supporting arm having an end connected with another end of the second supporting arm;    A joint pivotally connected with an other end of the third supporting arm; and    A setting seat pivotally connected with the joint.    
   
   
       2 . The supporting shelf of  claim 1 , further comprising a plurality of casings disposed on a side edge of the supporting shelf.  
   
   
       3 . The supporting shelf of  claim 1 , wherein the bearing seat pivotally connects vertically with the end of the first supporting arm through a pivot for the supporting shelf when it is swung left or right.  
   
   
       4 . The supporting shelf of  claim 1 , wherein the pin-connected mechanism is connected with both the first supporting arm and the second supporting arm for extending forwards or backwards both of the second supporting arm and the first supporting arm.  
   
   
       5 . The supporting shelf of  claim 1 , wherein the setting seat attaches to a LCD monitor and allows the LCD monitor to move up, down, left or right through the joint.