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Dust suction blackboard eraser

A blackboard eraser and guide plate technology, applied in the field of blackboard erasers, can solve problems such as harm to students, easily lead to pneumoconiosis, and a large amount of chalk dust, and achieve the effect of protecting health and reducing the possibility of dust diseases.

Inactive Publication Date: 2015-05-27
何小平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a dust-absorbing blackboard eraser to solve the problem that schools generally use blackboards and chalk for teaching, and a large amount of chalk dust will be generated during use, which can easily lead to pneumoconiosis and the like after being inhaled into the human body. Diseases are very harmful to the human body. Pneumoconiosis has almost become an occupational disease of teachers at present, and it is also a problem that is very harmful to students.

Method used

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  • Dust suction blackboard eraser

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Embodiment Construction

[0012] In order to make the technical solution of the present invention clearer, the specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0013] refer to figure 1 , the invention provides a vacuum blackboard eraser, comprising:

[0014] Wipe bar 1 and fixed plate 2, wipe bar 1 is fixed on the plate surface of fixed plate 2 side, also be fixedly provided with static guide plate 3 and electrostatic generator 4 on described fixed plate 2, electrostatic generator 4 and electrostatic guide plate 3 electrical connection.

[0015] The fixed board 2 is a strip plank.

[0016] The electrostatic generator 4 is arranged inside the fixed plate 2 .

[0017] The side of the fixing plate 2 opposite to the wiping strip 1 is also provided with a finger cover 5 , and both ends of the finger cover 5 are fixed on the fixing plate 2 .

[0018] The electrostatic guide plate 3 is arranged between the fixing plate...

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Abstract

The invention provides a dust suction blackboard eraser. The dust suction blackboard eraser comprises an erasing strip and a fixed plate, wherein the erasing strip is fixed on a plate surface on one side of the fixed plate; the fixed plate is further fixedly provided with an electrostatic guide plate and an electrostatic generator; the electrostatic generator is electrically connected with the electrostatic guide plate. The problems that a blackboard and chalks are commonly used for teaching in schools, and a lot of chalk dust is generated in a use process and diseases including pneumoconiosis and the like are easy to cause after the dust is inhaled by a human body, so that the damages to the human body is very great, the pneumoconiosis nearly becomes an occupational disease of teachers and the dust also has larger damages to students are solved. The dust suction blackboard eraser belongs to the field of teaching tools.

Description

technical field [0001] The invention relates to a blackboard eraser, in particular to a blackboard eraser which absorbs chalk dust through static electricity. Background technique [0002] At present, schools generally use the form of blackboard and chalk for teaching. During the use process, a large amount of chalk dust will be produced. After inhalation, it will easily lead to diseases such as pneumoconiosis, which is very harmful to the human body. Pneumoconiosis has almost become a teacher's teaching method. Occupational diseases are also harmful to students. Contents of the invention [0003] The purpose of the present invention is to provide a dust-absorbing blackboard eraser to solve the problem that schools generally use blackboards and chalk for teaching, and a large amount of chalk dust will be generated during use, which can easily lead to pneumoconiosis and the like after being inhaled into the human body. Diseases are very harmful to the human body. Pneumocon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/02
CPCB43L21/02
Inventor 何小平
Owner 何小平
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