CN2778578Y - 粉笔套 - Google Patents

粉笔套 Download PDF

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Publication number
CN2778578Y
CN2778578Y CN 200520089989 CN200520089989U CN2778578Y CN 2778578 Y CN2778578 Y CN 2778578Y CN 200520089989 CN200520089989 CN 200520089989 CN 200520089989 U CN200520089989 U CN 200520089989U CN 2778578 Y CN2778578 Y CN 2778578Y
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China
Prior art keywords
chalk
wall
pen container
screw threads
surface wall
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Expired - Fee Related
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CN 200520089989
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English (en)
Inventor
刘德川
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Individual
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Individual
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Priority to CN 200520089989 priority Critical patent/CN2778578Y/zh
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Publication of CN2778578Y publication Critical patent/CN2778578Y/zh
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Abstract

本实用新型涉及一种粉笔套，包括外套，并在外套内壁设有内螺纹，外套内设有笔筒，笔筒表面壁设有外螺纹，外套内壁的内螺纹与笔筒表面壁的外螺纹相对应。本实用新型具有结构简单、使用方便，能够与粉笔配套使用，避免了污染教师的手，改善了教师的工作环境。

Description

粉笔套
技术领域    本实用新型涉及一种文具用品，尤其是一种粉笔套。
技术背景    众所周知，当手持粉笔在黑板上写字时，手会被粉笔所污染。
发明内容    本实用新型的目的是克服上述所说不足而提供一种能够与粉笔配套使用的粉笔套。
为达到上述目的，本实用新型粉笔套，包括外套，为在外套内壁设有内螺纹，外套内设有笔筒，笔筒表面壁设有外螺纹，外套内壁的内螺纹与笔筒表面壁的外螺纹相对应。
采用上述结构后，粉笔套的外套内壁的内螺纹与笔筒表面壁的外螺纹相对应，粉笔设在笔筒内通过螺旋达到伸缩的目的。
本实用新型的优点是：结构简单、使用方便，能够与粉笔配套使用，避免了污染教师的手，改善了教师的工作环境。
附图说明    图1为本实用新型粉笔套整体结构示意图。
具体实施方式    如图1示，本实用新型粉笔套，包括外套1，为在外套1内壁设有内螺纹，外套1内设有笔筒2，笔筒2表面壁设有外螺纹，外套1内壁的内螺纹与笔筒2表面壁的外螺纹相对应。粉笔套的外套内壁的内螺纹与笔筒表面壁的外螺纹相对应，粉笔设在笔筒内通过螺旋达到伸缩的目的。

Claims (1)

1、一种粉笔套，包括外套(1)，其特征是：在外套(1)内壁设有内螺纹，外套(1)内设有笔筒(2)，笔筒(2)表面壁设有外螺纹，外套(1)内壁的内螺纹与笔筒(2)表面壁的外螺纹相对应。
CN 200520089989 2005-03-31 2005-03-31 粉笔套 Expired - Fee Related CN2778578Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520089989 CN2778578Y (zh) 2005-03-31 2005-03-31 粉笔套

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520089989 CN2778578Y (zh) 2005-03-31 2005-03-31 粉笔套

Publications (1)

Publication Number Publication Date
CN2778578Y true CN2778578Y (zh) 2006-05-10

Family

ID=36752667

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520089989 Expired - Fee Related CN2778578Y (zh) 2005-03-31 2005-03-31 粉笔套

Country Status (1)

Country Link
CN (1) CN2778578Y (zh)

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee