A blackboard eraser with good adaptability

A blackboard eraser and adaptable technology, applied in the field of blackboard erasers, can solve the problems of uneven blackboards, inconvenient use, noise generation, etc., and achieve the effects of high current changing frequency, avoiding excessive wear and improving service life.

Inactive Publication Date: 2017-08-04
宿州学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Because the blackboards used in various schools in our country are still mainly traditional blackboards, it is time-consuming and laborious to wipe the blackboards with blackboard erasers. Even if inhaled into the body, it affects mood and health. Inhaling too much chalk dust can cause discomfort in the throat, nose, and throat, and even cause pneumonia or respiratory diseases in severe cases.
[0003] When the existing blackboard eraser is used, the bristles are damaged unevenly, which affects the use effect
[0004] The blackboard is uneven, and the erasing with the blackboard eraser is not thorough. It is easy for the shell of the blackboard eraser to contact the blackboard, causing noise and inconvenient use.

Method used

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  • A blackboard eraser with good adaptability

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Embodiment Construction

[0043] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other; the present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] refer to figure 1 :

[0045] A blackboard eraser with good adaptability proposed by the present invention includes a housing 1, a plurality of bristle units, a driving mechanism, a first partition 12, a second partition 13, an elastic sheet 14, a magnetostrictive film 15, and a coil 16 , the first air inlet film 17, the second air inlet film, the first air outlet film 18, the second air outlet film, and the rechargeable battery assembly.

[0046] A plurality of bristle units are placed under the housing 1, the bristle unit includes a support portion 2, a mounting portion 3, a bristle assembly 4, a limiting portion 9, and an elastic member 10, and one end of th...

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PUM

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Abstract

The invention discloses a blackboard eraser good in adaptability. The blackboard eraser good in adaptability comprises a shell, a plurality of bristle units and a driving mechanism. The multiple bristle units are arranged below the shell and each comprise a supporting part, an installing part and a bristle assembly; one end of each supporting part is connected with the shell; the installing parts are installed on the supporting parts and rotationally connected with the supporting parts; the bristle assemblies are installed at the bottom ends of the installing parts; and the driving mechanisms are used for driving the installing parts to rotate. The blackboard eraser can avoid excessive abrasion of the bristle assemblies, stress and abrasion of the bristle assemblies are uniform, and the service life of the blackboard eraser is prolonged.

Description

technical field [0001] The invention relates to the technical field of teaching supplies, in particular to a blackboard eraser with good adaptability. Background technique [0002] Because the blackboards used in various schools in our country are still mainly traditional blackboards, it is time-consuming and laborious to wipe the blackboards with blackboard erasers. Even if inhaled into the body, it affects mood and health. Inhaling too much chalk dust can cause discomfort in the pharynx, nose, and throat, and even cause pneumonia or respiratory diseases in severe cases. [0003] When the existing blackboard eraser is used, the bristles are damaged unevenly, which affects the use effect. [0004] The blackboard is uneven, and the erasing with the blackboard eraser is not thorough, and the shell of the blackboard eraser is easy to contact with the blackboard, which generates noise and is inconvenient to use. Contents of the invention [0005] In order to solve the techni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43L21/02
CPCB43L21/02
Inventor 郑科研杨亚柳郑小为
Owner 宿州学院
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