Blackboard eraser

A technology of blackboard eraser and body, applied in the field of blackboard eraser, can solve the problems affecting writing clarity, great effort, etc., and achieve the effects of easy promotion, reduced use cost, and good practicability

Inactive Publication Date: 2018-05-25
广安市前锋初级中学校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it takes a lot of effort to wipe the blackboard, and white scratches will be left on the parts that are not wiped thoroughly, which will affect the clarity of the next writing

Method used

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  • Blackboard eraser

Examples

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Embodiment Construction

[0011] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] Such as figure 1 As shown, a blackboard eraser provided by the present invention includes a blackboard eraser body 1, on which a bristle 2 is arranged, the shape and size of the blackboard eraser body 1 are not limited, and the material of the bristle 2 is also not limited. .

[0013] Also includes a handle 3, the handle 3 includes a hand-held end 4 and a sliding end 5, the blackboard eraser body 1 is provided with a blind hole 6, the sliding end 5 is located in the blind hole 6, and the sliding end 5 is set There is a slider 7 matching the blind hole 6, and an elastic member 8 is arranged between the slider 7 and the blind hole 6, and the elastic member 8 can be a spring or an elastic ring. The hand-held end 4 is located outside the blind hole 6, and the opening of the blind hole 6 is provided with an end cap 9, which can ensure th...

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PUM

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Abstract

The invention relates to the technical field of teaching tools, in particular to a blackboard eraser. The blackboard eraser comprises a blackboard eraser body which is provided with brush hair, and further comprises a handle; the handle includes a handheld end and a sliding end; a blind hole is formed in the blackboard eraser body; the sliding end is located in the blind hole and provided with a sliding block matched with the blind hole; an elastic part is arranged between the sliding block and the blind hole; the handheld end is located outside the blind hole; and an end cover is arranged atan opening of the blind hole. The blackboard eraser is simple in structure, capable of reducing the using cost and easy to popularize and has quite good practicality. Writing on a blackboard can be completely and quickly erased, in addition, time and effort are saved, and the practicality is very good.

Description

technical field [0001] The invention relates to the technical field of teaching tools, in particular to a blackboard eraser. Background technique [0002] The teaching tools used at home and abroad are still based on traditional blackboard chalk at present. When in use, hold the blackboard eraser with your hand and move back and forth after touching the blackboard, thereby erasing the words on the blackboard. However, it takes a lot of effort to wipe the blackboard, and white scratches will be left in places where the cleaning is not thorough, which will affect the clarity of the next writing. Contents of the invention [0003] The object of the present invention is to provide a blackboard eraser with simple structure and energy saving. [0004] In order to achieve the above object, the technical solution adopted by the present invention is: a blackboard eraser, comprising a blackboard eraser body, the blackboard eraser body is provided with bristles, and also includes a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/00B43L21/04
CPCB43L21/00B43L21/04
Inventor 严春燕
Owner 广安市前锋初级中学校
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