Fixing frame for easy installation of audiovisual teaching materials

摘要

This research is about the black plate fixed frame for easy installation of audio-visual teaching materials,In order to facilitate the installation and use of blackboard fixing used by schools or other educational facilities and auxiliary materials such as necessary materials in education, a mobile small blackboard (b) moving track (R) is formed.In order to install the guide rail (2) of C) and to paste 14), the fixed slot (8) formed by the inclined plane (9) is formed as a whole, which makes the paste and installation of the separate education cost track (Chart) or poster easier, and the installation of curtain (C) easier.