ASSISTANT EQUIPMENT OF AN ALTERATION AND ABOLITION BLACK BOARD

摘要

The present invention relates to an auxiliary member driving apparatus of the opening and closing blackboard, the main blackboard 20 which is installed on the front wall surface, such as a lecture room, toward the front; An auxiliary member 30 positioned on one side or both sides of the main blackboard 20; The main blackboard 20 is surrounded by the outer frame 11, the auxiliary member 30 is wrapped in the side frame body 12, the auxiliary member by the guide of the rail 15 and the rail groove 16 In the frame body 10 for guiding the 30 to move in front of the main blackboard 20 is provided; Driving means 40 is provided to advance the auxiliary member 30 forward and backward of the main blackboard 20 by the driving of the motor 41, the operation is easy to handle, anyone can handle, the efficiency of the lecture It is a very useful invention, such as being able to concentrate on class.