公开(公告)号：US20090190212A1

公开(公告)日：2009-07-30

申请号：US12149762

申请日：2008-05-07

申请人： Shih-Jen WANG ,  Hsien Lung CHEN ,  Li Chu CHEN

发明人： Shih-Jen WANG ,  Hsien Lung CHEN ,  Li Chu CHEN

IPC分类号： G03B21/58

CPC分类号： G03B21/58

摘要： The present invention relates to a retractable frame of projection screen comprises, a receiving case; a cylinder; a supporting arm; a main retractable arm; and an upper support; when folding, the upper support is downwardly pressed, then the cylinder retractable arm is forced to inwardly retract by the cylinder and the driven retractable arm is inwardly retracted toward the main retractable arm until the cylinder retractable arm is fully received in the cylinder and the driven retractable arm is fully received in the main retractable arm, so the projection screen, the upper support, the supporting arm, the connecting member and the main retractable arm are received in the accommodating space.

摘要翻译： 本发明涉及一种投影屏幕的伸缩框架，包括一个接收盒; 圆筒 支撑臂 主要伸缩臂 和上支撑; 当折叠时，上支撑被向下按压，然后气缸可伸缩臂被气缸向内缩回，并且被驱动的可伸缩臂向主缩回臂向内缩回，直到气缸伸缩臂完全容纳在气缸中并被驱动 可收缩臂完全容纳在主可伸缩臂中，因此投影屏幕，上支撑件，支撑臂，连接构件和主可伸缩臂被容纳在容纳空间中。