blackboard for teaching

Abstract

The invention relates to a teaching blackboard. The teaching blackboard comprises a bracket provided with a main board and a secondary board; a guide groove is formed in the bracket; the guide groove includes a main straight guide groove section for extending a guide direction in the left-right direction, and an arc guide groove section arranged at the right end of the main straight guide groove section and gradually extending forwards from left to right; the secondary board is provided with a secondary board right walking wheel and a secondary board left walking wheel; the length of the main straight guide groove section is larger than a gap between the secondary board left walking wheel and the secondary board right walking wheel; a right walking wheel through groove for passing through the secondary board right walking wheel in the left-right direction is formed in the right side groove wall of the arc guide groove section; and in the process of the moving the secondary board to the right side, the secondary board left walking wheel and the arc guide groove are in guide moving fit, so that the secondary board forwards moves until the front surface of the secondary board is leveled with the front surface of the main board. The teaching blackboard can enable the main board to be leveled with the secondary board.

Description

technical field [0001] The invention relates to a blackboard in the teaching field. Background technique [0002] The blackboard is a must in the teaching of various majors, but for the major of tourism management, the blackboard has its own characteristics. In the teaching of tourism management majors, display boards are used to display diagrams and examples of teaching content. In order to deepen students' understanding, it is often necessary to paste teaching pictures or some tourist attraction planning pictures on the blackboard. However, due to the limited size of the blackboard, When the drawings needed for teaching are pasted on the display board, there is no space left to write some concepts and content summaries, which brings a lot of inconvenience to the teaching process. [0003] For this reason, Chinese patent CN204010409U discloses a "tourism management professional teaching display board" that can expand the display area of ​​the blackboard. The teaching displ...

AI Technical Summary

Problems solved by technology

The existing problem of this blackboard is: after the sub-board is removed from the rear side of the main board, the front board of the main board and the front board of the sub-board are not in the same plane, and due to the limitation of the guide rail, the front board of the sub-board is in the same plane. The rear side of the front panel of the main board will bring a sense of dislocation to the students' vision, which is very uncomfortable. In addition, if the drawing is large as shown in the figure, the sub-board can not play the role of supporting the main board, which is very inconvenient to use

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