Teaching wall drawing device

Abstract

The invention discloses a teaching wall drawing device and mainly relates to the field of teaching devices. The teaching wall drawing device comprises a blackboard frame, two sides sliding rods and a top hanging rod, wherein the blackboard frame comprises a top frame, a bottom frame and two side frames, vertical sliding grooves are formed in the two side frames, round fixing grooves are formed in the bottom surfaces of the vertical sliding grooves, handles are arranged at the bottoms of the two side sliding rods, round fixed rods are connected in the handles in a sliding mode and is in plugged connection with the round fixing grooves, outward convex connecting blocks are arranged at the tops of the two side sliding rods, two ends of the top hanging rod are in rotary connection with the outward convex connecting blocks, and a wall drawing hanging part is arranged on the top hanging rod. The teaching wall drawing device has the advantages that when the teaching wall drawing device is used, most of blackboard usage space is not covered; students can more clearly see drawings; multiple drawings can be hung at one time; a variety of drawing hangers are arranged, and appropriate drawing hangers can be selected according to the properties of the drawings, and the device is simple in structure and more convenient to use.

Description

technical field [0001] The invention relates to the field of teaching devices, in particular to a teaching wall chart device. Background technique [0002] Teachers often use various wall charts in the daily teaching process. The existing wall charts need to be pasted on the blackboard with tape, or hooks are set on the top frame of the blackboard, and the drawings are hung on the hooks. , the drawings will cover a large amount of blackboard space. When the covered blackboard space is needed, it is very troublesome to move the drawings. In addition, the height of the indoor windows is basically the same as the height of the blackboard. The sun's rays shine in and will be reflected on the drawings. Reflection is caused, and students will not be able to see clearly when looking at the picture, which is not conducive to teaching. In particular, if a class needs to use multiple drawings for teaching, the teacher usually removes one drawing after using it, and then hangs another...

AI Technical Summary

Problems solved by technology

[0002] Teachers often use various wall charts in the daily teaching process. The existing wall charts need to be pasted on the blackboard with tape, or hooks are set on the top frame of the blackboard, and the drawings are hung on the hooks. , the drawings will cover a large amount of blackboard space. When the covered blackboard space is needed, it is very troublesome to move the drawings. In addition, the height of the indoor windows is basically the same as the height of the blackboard. The sun's rays shine in and will be reflected on the drawings. It causes reflections, and students will not be able to see clearly when looking at the pictures, which is not conducive to teaching

In particular, if a class needs to use multiple drawings for teaching, the teacher usually removes one drawing after using it, and then hangs another drawing. When changing the drawing, it is not only troublesome to operate, but also wastes precious class time

If you use a portable wall chart device, you need to push it around before and after class, which is very inconvenient to use and takes up space in the classroom

And the wall chart pendant in the prior art is single, only has hook, hanging ring, adhesive tape etc. separately, can not select suitable wall chart pendant according to the nature of drawing, use inconvenience

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