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Magnetic blackboard capable of safe erasing

A magnetic and blackboard technology, applied in the field of blackboards, can solve problems such as unhealthy mental and physical health of students and teachers, inconvenience in education and normal use, etc., to avoid occupational diseases, improve the efficiency of writing on the blackboard, and easily and conveniently erase and write.

Inactive Publication Date: 2017-06-16
李国云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After writing on the traditional blackboard, when wiping the blackboard, it will cause dust to fly, and the flying dust will cause harm to the human body. Long-term inhalation of dust is very harmful to the physical and mental health of students and teachers, and will bring certain benefits to the education industry. the inconvenience
None of the existing magnetic blackboards has a recovery function, and the written content will disappear after erasing, which brings inconvenience to normal use and writing on the blackboard

Method used

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  • Magnetic blackboard capable of safe erasing
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Embodiment Construction

[0013] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer ” refer to directions towards or away from the geometric center of a particular part, respectively.

[0014] Such as figure 1 and figure 2 As shown, the erasable safety magnetic blackboard disclosed by the present invention includes a carrier plate 1, a transparent plate 3, a reset device, a pressure switch and an alarm 7 provided with movable movable magnetic nails 2, and the reset device includes a reset lever 6 and an alarm 7. Push rod 5, the pressure switch is arranged o...

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Abstract

The rewritable safety magnetic blackboard disclosed by the present invention comprises a carrier board provided with movable magnetic nails, a transparent board, a reset device, a pressure switch and an alarm. The reset device includes a reset rod and a push rod. The invention has the advantages of simple structure, convenient use, firmness, high writing quality and good erasing effect, reminds during erasing operation, prevents mistaken erasing, effectively improves teaching quality and blackboard writing efficiency, and is non-polluting, which is beneficial to Ensure the health of teachers and students, effectively avoiding the occurrence of silicosis occupational diseases.

Description

technical field [0001] The invention relates to a blackboard, in particular to a rewritable safe magnetic blackboard. Background technique [0002] The blackboard does not specifically refer to the black board surface. In the traditional sense, it is a plane that can be written repeatedly. The board surface is hard and is mostly used for teaching. Mostly black, dark green, white. Before the invention of writing, people discovered that charcoal could be used for painting. Some ancient murals can be found in some ancient caves in Europe. The rock walls with these murals can be called blackboards in the traditional sense. Blackboards have witnessed the step-by-step development of world education and spread knowledge for mankind from the earliest black paint painted on the surface of hard objects such as wood boards and cement, to the terrazzo glass in the 1990s, and now to the color-coated steel plates and composite material plates. , Universal education, made great contribut...

Claims

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Application Information

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IPC IPC(8): B43L1/04
CPCB43L1/045
Inventor 李国云
Owner 李国云
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