ENVIRONMENT-FRIENDLY DOOR-HINGED MULTI FUNCTIONAL BLACK BOARD WITH FOUR FACES CAPABLE OF SELECTING ANY BLACKBOARD BY MOVING THE BLACKBOARD TO FRONT WHEN NECESSARY

摘要

PURPOSE: An environment-friendly door-hinged multi functional black board with four faces is provided to move wanted black board to front.;CONSTITUTION: An environment-friendly door-hinged multi functional black board with four faces comprises: a frame bar(310) including a hollow pipe, a fixing protrusion, which is horizontally expanded from the top of a front surface and a back surface, for offering fixing groove; a corner body(320) including an insertion protrusion, which is expanded from a main body, for insert-fixing each hollow pipe for forming a square frame; a front and a back black board body of which edge is fixed to the fixing groove and the insertion groove at the same time, when assembling the square frame by connection of the horizontal and vertical frame bar toe the corner body.;COPYRIGHT KIPO 2012