Multi-angle adjustable blackboard

Abstract

Multi-angle adjustment of the blackboard solves the problem that the existing blackboard is fixed and the students at the edge cannot see the blackboard clearly due to the reflective light. A support platform, a base is provided under the support platform, a screw shaft is rotatable on the base, an external gear is fixed on the outside of the lower end of the housing, gears are meshed on the outside of the external gear, and an upper cover plate is installed on the upper end of the housing to rotate , there is a fixed shaft in the housing, the lower end of the fixed shaft passes through the lower cover plate and is fixedly connected with the connection plate, the inner thread of the housing is connected with a nut block, a sliding plate is installed on the nut block, and a guide rod is fixed on the upper edge of the nut block, The upper end of the guide rod passes through the upper cover, a support plate is hinged above the upper cover, a blackboard is fixed at the right end of the support plate, the guide rod is slidingly connected with the support plate, a support plate is hinged above the upper cover, and a blackboard is fixed at the right end of the support plate , the guide rod is slidingly connected with the support plate.

Description

technical field [0001] The invention belongs to the field of teaching equipment, in particular to a multi-angle adjustable blackboard. Background technique [0002] From the earliest black paint painted on the surface of hard objects such as wood and cement, to ink glass, color-coated steel plates, and composite material plates in the 1990s, blackboards have witnessed the step-by-step development of world education, spreading knowledge and popularizing for mankind. Education has made great contributions. Now the types of blackboards have also become complex and diverse. In terms of color, they can be divided into blackboards, green boards, white boards, etc. In terms of color and shape, they can be divided into flat panels and arc panels. , Magnetic blackboards are divided into teaching blackboards, office whiteboards, advertising boards, display boards, and teaching blackboards have electronic blackboards, multi-functional combination boards, combination sliding blackboard...

AI Technical Summary

Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a multi-angle adjustable blackboard, which effectively solves the problem that the existing blackboard is fixed, and the students sitting on the edge cannot observe the blackboard clearly due to reflection. Problems that cause inconvenience in teaching and affect students' learning

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