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Chalk sleeve

The technology of a chalk cover and a sleeve is applied in the field of teaching tools and can solve the problem that the chalk cover cannot be used for long and short chalks and the like.

Inactive Publication Date: 2013-04-03
SHANGHAI HUANGPU DISTRICT XINLING ELEMENTARY SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is used to solve the problem that the chalk cover in the prior art cannot be applied to chalks of various lengths

Method used

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  • Chalk sleeve

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Embodiment Construction

[0016] In order to make the technical means, creative features, objectives and effects of the invention easy to understand, the present invention will be further elaborated below in conjunction with specific diagrams.

[0017] figure 1 To invent a chalk case. like figure 1 Shown, a kind of chalk cover, wherein, comprise: one side of a sleeve 1 is provided with a through hole 2, is provided with internal thread 3 in the through hole 2, is provided with external thread 5 on the outside of a short rod 4, and short rod 4 Screwed into the internal thread 3 of the through-hole 2 via the external thread 5 . One end of the short rod 4 is provided with a miniature handle 6, which is convenient for screwing the short rod 4. The length of the short rod 4 is greater than the diameter of the sleeve 1 . The material of short rod 4 and sleeve 1 is metal. The outside of the sleeve 1 is provided with an anti-slip pad 7 to prevent the sleeve 1 from slipping from the hand.

[0018] In a sp...

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PUM

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Abstract

The invention discloses a chalk sleeve, and the chalk sleeve is formed in a way that one side of a bushing is provided with a through hole, wherein the inner surface of the through hole is provided with inner threads, the outer side of a short rod is provided with outer threads, and the short rod is screwed into the inner threads of the through hole through the outer threads. By utilizing a dust absorption blackboard eraser, chalk inside the bushing is effectively fixed through the short rod in the through hole to be used for writing; and meanwhile, through an antiskid pad which is arranged on the outer side of the bushing, the chalk can be prevented from slipping in the writing process. The chalk sleeve is simple in structure, convenient to use and capable of bringing about more convenience to people.

Description

technical field [0001] The invention relates to a teaching tool, in particular to a chalk cover. Background technique [0002] As we all know, when teachers and students write on the blackboard, they all write with chalk in their hands. The hand is in contact with the chalk for a long time, which may easily cause damage to the skin of the hand. In order to solve this problem, people have designed a chalk case, but the existing pen case has a single function. , can not satisfy the use needs of teachers and students, for example: existing chalk cover can not be applicable to the chalk of various lengths, has brought a lot of troubles when using chalk in class. Contents of the invention [0003] The invention discloses a chalk case. It is used to solve the problem that the chalk cover in the prior art cannot be applied to chalks of various lengths. [0004] In order to achieve the above object, the technical scheme adopted in the present invention is: [0005] A chalk cove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43K23/02B43K19/14
Inventor 张仲岩
Owner SHANGHAI HUANGPU DISTRICT XINLING ELEMENTARY SCHOOL
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