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a blackboard eraser

A blackboard wiper and board wiper technology, applied in the field of blackboard wipers, can solve the problems of unsatisfactory wiping effect, dust, physical health damage of teachers and students, etc., and achieve the effect of wiping clean, long service life, and easy to hold.

Inactive Publication Date: 2017-12-19
张惠媛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Blackboard eraser is a commonly used tool in teaching, which is used to wipe the writing marks after writing on the blackboard, but the wiping effect of the existing blackboard eraser is not ideal, especially after repeated use, it will leave white on the blackboard, and during the wiping process Dust, causing harm to the health of teachers and students

Method used

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  • a blackboard eraser

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 The shown blackboard eraser includes a hand-held body 1, a grip part 2 is provided on one side of the hand-held body 1 for holding, and an adjacent eraser body 3 and a powder collection bin 4 are arranged on the other side of the corresponding grip part 2, The powder collecting bin 4 is a bin body with a hollow cavity, and the opening of the bin body is adjacent to the eraser body 3 .

Embodiment 2

[0018] As a preference of Embodiment 1, the powder collecting bin 4 adopts a hypotenuse structure 5 from the opening of the bin body to the connection surface of the hand-held body 1, and a wear-resistant soft edge is set at the opening of the bin body, which is consistent with the height of the eraser body 3 , the hypotenuse structure makes the dust wiped off by the eraser body received from the opening of the bin body enter the hollow cavity.

Embodiment 3

[0020] As a further preference of Embodiment 1, the hypotenuse structure 5 of the powder collection bin 4 from the opening of the bin body to the connecting surface of the hand-held body 1 is a movable connection, and the connecting surface of the hand-held body 1 is used as the movable axis. A push rod with teeth is set between the opening of the powder bin 4 and the hand-held body 1, and a tooth button is set at the position corresponding to the push rod on the hollow cavity wall in the powder collection bin 4. After the eraser body is worn, the push rod is pushed , so that the opening of the bin body is at the same height as the eraser body.

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Abstract

The invention discloses a blackboard eraser which comprises a handheld body. A handheld part is arranged on one face of the handheld body for handholding, and a blackboard eraser body and a dust collecting bin which are adjacent are arranged at the positions, corresponding to the handheld part, on the other face of the handheld body. The dust collecting bin is a bin body provided with a hollow cavity, and the bin body is opened at the position adjacent to the blackboard eraser body. By means of the blackboard eraser, dust generated through wiping of the blackboard eraser body is collected into the hollow cavity through the dust collecting bin, the dust naturally falls to the opening position of the bin body and falls into the bin body along a bevel edge structure through the self weight, raised dust cannot be generated, handholding is more convenient through the handheld part, force is exerted more evenly, and the hand cannot be contaminated with the dust. The service life of the blackboard eraser is longer through the adjustable bevel edge structure. Due to the opening structure at the bottom of the bin body, the dust can be recycled, thorough wiping is ensured, raised dust is not generated, and the dust is automatically recovered.

Description

technical field [0001] The invention relates to a blackboard eraser and belongs to the technical field of teaching appliances. Background technique [0002] Blackboard eraser is a commonly used tool in teaching, which is used to wipe the writing marks after writing on the blackboard, but the wiping effect of the existing blackboard eraser is not ideal, especially after repeated use, it will leave white on the blackboard, and during the wiping process Dust will cause harm to the health of teachers and students. Contents of the invention [0003] The object of the present invention is to solve the problems existing in the current technology, and provide a blackboard eraser which can be wiped clean without raising dust and automatically collects dust. [0004] In order to achieve the above object, the technical means adopted in the present invention is: a blackboard eraser, including a hand-held body, one side of the hand-held body is provided with a holding part for holding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43L21/02B43L21/04
CPCB43L21/02B43L21/04
Inventor 张惠媛
Owner 张惠媛
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