Simple blackboard

A blackboard and simple technology, applied in the field of cultural and educational supplies, can solve the problems of inconvenient replacement of the board surface, inconvenience and inability to use

Inactive Publication Date: 2013-05-29
马雪梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reverse side of the board cannot be used
Or it is troublesome to use the operation on the reverse side, and it is inconvenient to use the replacement board to hang

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The specific embodiment of this simple and easy blackboard is illustrated in conjunction with accompanying drawing. as the picture shows:

[0013] This simple blackboard is shown in the figure: it adopts aluminum alloy bracket 1, and its size: width X height is 1650 X 1400mm. Aluminum alloy frame 2, its size: length X width is 1500 X 1000mm. The board surface 3 is an equal-area iron clip 4 sandwiched by two white plastic panels, and its size: length X width X thickness is 1450 X 950 X 45mm. Caster 15 is universal wheel. When the board is replaced, as long as the handle 12 is lifted, the ratchet 9 is pulled up, the ratchet 8 rotates 180 degrees with the central axis 5, and the handle 12 is put down, the ratchet 9 can be extended into the square tooth mouth, thereby Fix the central axis 5 and the frame 2, and the whole board is turned over and positioned.

[0014] The simple blackboard has a clean and beautiful board surface, adopts a ratchet mechanism to make the boa...

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PUM

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Abstract

The invention discloses a simple blackboard. New materials are adopted to manufacture a writing board which can exchange a board face to replace the traditional blackboard teaching tool. A three-layer structure is mainly adopted in the board face structure besides a support, a frame and the board face. A magnetic clamping piece is clamped between two plastic boards to absorb iron pieces, magnetic nails or magnetic strips to hang papers and charts. At the same time, words can be written on the two white plastic boards. A ratchet wheel mechanism is adopted to control a central shaft of the frame to enable the board face to be exchanged flexibly, fast, and reliably and to be firm to fix.

Description

1. Technical field [0001] The invention discloses a simple blackboard and belongs to the technical field of stationery and educational supplies. 2. Background technology [0002] Various blackboards, writing boards, and instruction boards are available in the market, most of which use writing or indicating charts on the front. The reverse side of the board cannot be used. Or it is troublesome to use the operation on the reverse side, and it is inconvenient to use the replacement board to hang. 3. Contents of the invention [0003] The purpose of the present invention is to solve the problem of making full use of the board surface, and to design a simple blackboard with two sides. The board can be written with dust-free pens of various colors, and can also be attached to written paper with magnetic nails and magnetic strips, and can also be used as a screen for projectors such as slideshows. The structure of the board is simple, the replacement of the board surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L1/04
Inventor 马雪梅
Owner 马雪梅
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