Movable teaching blackboard with rapid lifting function
A blackboard and functional technology, applied in the field of blackboards, can solve the problems of not being able to absorb pen powder, not be able to erase chalk characters, etc., and achieve the effect of preventing flying
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[0027] The following disclosure provides many different implementations or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and arrangements of specific examples are described below. Of course, they are examples only and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and / or reference letters in various instances, such repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art may recognize the use of other processes and / or the use of other materials.
[0028] see Figure 1-10 , the present invention provides a technical solution: a movable blackboard for teaching with a fast lifting function, comprising two groups of...
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