Multifunctional three-face turning blackboard based on cam intermittence motion mechanism

Abstract

An existing classroom is insufficient in presentation space, and interference problems can be easily formed; the invention aims at the problems, and provides a novel multifunctional three-face turning blackboard with simple structure and capable of realizing triangular prism surface intermittence motions while ensuring flatness; the blackboard can realize writing presentation comprising a white board and the blackboard, and can realize multimedia display like an LED, a liquid crystal screen and curtain; the multifunctional three-face turning blackboard takes the cam intermittence motion mechanism, a torsion spring transmission mechanism and an intermittence prop mechanism as the cores; the cam mechanism comprises a cam dial and a cam triangle connected with a torsion spring coupling mechanism through a transmission shaft, thus realizing flexible transmission; the intermittence prop mechanism comprises a cam dial, a pressure spring and a prop; the prop is intermittently pushed and returned by a secondary cam on the cam dial, thus realizing triangular prism intermittence locking and loosening; the multifunctional three-face turning blackboard is simple in structure, can ensure the flatness of the blackboard surface, and the triangular prism application can realize multifunctional display effect.

Description

Technical field: [0001] The invention relates to a blackboard for classrooms, in particular to a novel multi-functional three-sided turning blackboard. Background technique: [0002] With the continuous improvement and updating of teaching methods, more and more means can be used to present teaching content in classrooms. The traditional means of expression such as blackboards and whiteboards also include new media projectors, LCD screens and other equipment. What follows is the lack of display space available in the classroom and the situation of mutual influence between different forms of expression. For example, in a combination of a blackboard and a projector, when the projector is used, the curtain tends to block the blackboard, reducing the usable area of ​​the blackboard. In order to solve the problem of insufficient display space in classrooms, a series of new blackboards have been developed on the market to solve this problem. for example: [0003] a use four bla...

AI Technical Summary

Problems solved by technology

[0006] These new blackboards have alleviated the problem of insufficient display space in the classroom to a certain extent by expanding the space and combining (integrating) various forms of expression. However, this method has led to problems such as poor display effect and insufficient operation.

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