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Lamination blackboard

A layered, blackboard technology, applied in the field of blackboards, can solve problems such as laborious and time-wasting, and achieve the effect of saving time

Inactive Publication Date: 2008-04-30
郭佳松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the teaching work, the teacher writes on the blackboard with chalk during the lecture. After the blackboard is full, he has to erase it in time and write again, which is a waste of time and more laborious.

Method used

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  • Lamination blackboard

Examples

Experimental program
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Embodiment Construction

[0012] Accompanying drawing is a kind of specific embodiment of the present invention.

[0013] The laminated blackboard of the present invention comprises a blackboard surface and a frame 7 surrounding the blackboard surface. The blackboard surfaces are two pieces close to each other, and at least two ropes or chains 3 are connected between the two blackboard surfaces; Be fixed with the pulley or sprocket wheel 4 that overlaps for rope or chain 3 above, the left and right sides of frame 7 have the slide rail 8 that makes two blackboard surfaces slide. The bottom of every blackboard surface all has stay rope 6. The back of the blackboard face 1 in front is fixed with a sponge 5 identical with the horizontal dimension of the blackboard face, and the sponge 5 is close to the front surface of the blackboard face 2 at the back.

[0014] The two blackboard surfaces of the present invention can be used alternately, use the blackboard surface 2 at the back after using the blackboard...

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PUM

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Abstract

The invention relates to a blackboard of teaching tool, in particular to a laminated blackboard. The invention comprises a blackboard face and a frame surrounding the blackboard face. The invention is characterized in that the blackboard face comprises two nearby blocks which are connected with at least two lines or chains between, the frame is fixed with a block or a chain wheel lapped by the lines or chains, and left and right sides of the frame are provided with tracks for the two blackboard faces. The invention has the advantages that the two blackboard faces can be used alternatively, while the sponge at the back of the first blackboard can clean the second one, to reduce cleaning time.

Description

(1) Technical field [0001] The invention relates to a blackboard in teaching supplies, in particular to a laminated blackboard. (2) Background technology [0002] At present, in the teaching work, the teacher writes on the blackboard with chalk during lectures. After the blackboard is full, he has to erase it in time and write again, which is a waste of time and more laborious. (3) Contents of the invention [0003] In order to make up for the deficiencies of the prior art, the present invention provides a stacked blackboard that can be used alternately. [0004] The present invention is achieved through the following technical solutions: [0005] The laminated blackboard of the present invention comprises a blackboard surface and a frame surrounding the blackboard surface. Chain; the frame is fixed with a pulley or a sprocket on which a rope or chain is lapped, and the left and right sides of the frame are provided with slide rails for two blackboard surfaces to slide. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L1/04B43L21/00
Inventor 郭佳松
Owner 郭佳松
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