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A new type of blackboard eraser

A blackboard eraser, a new type of technology, can be used in blackboard or slate cleaning devices, printing, office supplies, etc. It can solve the problems of occupational disease hazards, large quantities, etc., and achieve the effect of reducing chalk dust and preventing falling

Inactive Publication Date: 2018-04-20
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Teachers are a profession that cultivates talents of the motherland. They not only teach students various courses, but also teach students how to face life and how to face difficulties. However, while teaching students, teachers are faced with the hazards of occupational diseases. Most of the occupational diseases of teachers are caused by Caused by chalk dust, especially when wiping the blackboard, ordinary blackboard erasers tend to bring up a lot of dust when wiping the blackboard, so this blackboard eraser is designed

Method used

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  • A new type of blackboard eraser
  • A new type of blackboard eraser
  • A new type of blackboard eraser

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Experimental program
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Effect test

specific Embodiment approach 1

[0025] Combine below figure 1 , 2 , 3, 4, 5, 6, 7 and 8 illustrate this embodiment, the present invention relates to a kind of teaching aid, more specifically a kind of new-style blackboard eraser, comprise bristle 1, water storage tank 2, casing 3, groove Ⅰ4, sealing strip 5, groove Ⅱ6, convex post 7 and groove Ⅲ8, not only can reduce chalk dust when wiping the blackboard, but also can clean up the chalk dust accumulated at the root of the bristles conveniently and quickly after the blackboard eraser has been used for a long time It can prevent the blackboard eraser from falling off, and there are bristles on the two water storage tanks, which can be replaced to avoid deformation of the bristles caused by long-term use, which will affect its service life.

[0026] The shell 3 includes a sticker 3-1, a magnet 3-2 and a pillar 3-3, the magnet 3-2 is connected to the lower end of the shell 3 through the sticker 3-1, and the shell 3 can be fixed on the upper end of the iron desk...

specific Embodiment approach 2

[0028] Combine below figure 1 , 2 , 3, 4, 5, 6, 7 and 8 illustrate this embodiment, and this embodiment will further illustrate Embodiment 1. The material of the boss 7 is soft rubber, so that the water storage tank 2 can slide into the shell 3, and The protruding column 7 can block the water storage tank 2 through the groove III 8 to prevent the water storage tank 2 from falling off during use.

specific Embodiment approach 3

[0029] Combine below figure 1 , 2 , 3, 4, 5, 6, 7 and 8 illustrate the present embodiment, and the present embodiment will further illustrate the first embodiment, the upper end surface of the water storage tank 2, that is, the material on the surface where the bristles 1 and the groove II 6 are located is soft plastic After the bristles 1 touch the blackboard and are bent by force, they can squeeze the upper end surface of the water storage tank 2 to deform the concave surface of the groove II6, and the sealing strips 5 are separated from each other, and then the water flows to the blackboard to reduce chalk dust, and the water storage tank 2 The other surfaces are made of hard plastic to prevent the water from flowing out due to the extrusion of the boss 7 when the water storage tank 2 slides into the shell 3 when the water storage tank 2 stores too much water. When the teacher uses it, it is the same as an ordinary blackboard eraser. , press the bristle 1 on the blackboard...

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PUM

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Abstract

The invention relates to a teaching assistance tool, in particular to a novel blackboard eraser. The novel blackboard eraser comprises bristles, water storage tanks, a shell, a groove I, a sealing strip, grooves II, a protruding pillar and a groove III. Chalk dust can be reduced during blackboard wiping, chalk dust accumulated at the roots of the bristles can be conveniently and rapidly removed after the blackboard eraser is used for a long time, and the blackboard eraser can be prevented from falling. The bristles are arranged on the two water storage tanks and can be replaced for use, and the phenomenon that the bristles are deformed when one end is used for a long time, and the service life of the bristles are affected is avoided. The bristles are arranged on shells of the water storage tanks. The grooves II and the bristles are arranged on the same face of the shells of the water storage tanks, the bristles are arranged in gaps formed between the multiple grooves II, and the groove III is formed in the connecting position between the water storage tanks. The protruding pillar is arranged in the shell and is matched with the groove III at the connecting position between the water storage tanks. The sealing strips are arranged at the positions of crossed notches of the bottoms of the grooves II, the sealing strips are matched when the faces where the bristles and the grooves II are formed are not subjected to external force, and glue is attached to the shell.

Description

technical field [0001] The invention relates to a teaching aid, more specifically a novel blackboard eraser. Background technique [0002] Teachers are a profession that cultivates talents of the motherland. They not only teach students various courses, but also teach students how to face life and how to face difficulties. However, teachers are facing the hazards of occupational diseases while teaching students. Most of the occupational diseases of teachers are caused by Caused by chalk dust, especially when wiping the blackboard, ordinary blackboard erasers tend to bring up a lot of dust when wiping the blackboard, so this blackboard eraser is designed. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a new type of blackboard eraser, which can not only reduce chalk dust when wiping the blackboard, but also can clean up the chalk dust accumulated at the root of the bristles conveniently and quickly after the blac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43L21/00
CPCB43L21/00
Inventor 赵佐平
Owner SHAANXI SCI TECH UNIV