SUSPENDING ARM COMBINED TO SCREEN SUPPORTING FRAME

摘要

A suspending arm combined to a screen supporting frame comprises an upper supporting arm; a lower supporting arm; a supporting seat joint having a first adaptor unit and a first pivot unit; the first pivot unit being pivoted to the upper supporting arm and lower supporting arm; a screen joint including a second adaptor unit and a second pivot unit; the second pivot unit being pivoted to the upper supporting arm and lower supporting arm; one end of the connecting block being pivoted into the screen joint; an air pressure; one end of an air pressure bar being pivoted to the lower supporting arm and another end of air pressure bar being pivoted to the connecting block; a fine adjusting unit including a screw and a positioning block; the screw passing through the positioning block and being then screwed to the connecting block.

主权项

1. A suspending arm combined to a screen supporting frame; comprising:
an upper supporting arm; a lower supporting arm; a supporting seat joint having a first adaptor unit and a first pivot unit; the first pivot unit being pivoted to the upper supporting arm and the lower supporting arm; a screen joint including a second adaptor unit and a second pivot unit; the second pivot unit being pivoted to the upper supporting arm and the lower supporting arm; one end of the connecting block is pivoted into the screen joint; an air pressure; one end of an air pressure bar being pivoted to the lower supporting arm and another end of air pressure bar being pivoted to the connecting block; a fine adjusting unit including a screw and a positioning block; the screw passing through the positioning block and being then screwed to the connecting block; the positioning block being connected to the screen joint; and wherein by the fine adjusting unit to adjust the position of the connecting block, a length of the air pressure bar is adjustable so that the supporting force released from the air pressure bar is changed without using any other locking way so that the orientation of the suspending arm is retained.