CN201922723U - 粉笔套 - Google Patents

粉笔套 Download PDF

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Publication number
CN201922723U
CN201922723U CN2010206725083U CN201020672508U CN201922723U CN 201922723 U CN201922723 U CN 201922723U CN 2010206725083 U CN2010206725083 U CN 2010206725083U CN 201020672508 U CN201020672508 U CN 201020672508U CN 201922723 U CN201922723 U CN 201922723U
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China
Prior art keywords
chalk
groove
threaded rod
chalk sleeve
sleeve
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Expired - Fee Related
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CN2010206725083U
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English (en)
Inventor
郭钊
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Individual
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Individual
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Abstract

本实用新型公开了一种粉笔套。它包括螺纹杆和柱体,所述柱体的一端设有与螺纹杆配合使用的螺纹孔,所述柱体的另一端设有凹槽,所述凹槽嵌合粉笔的尾部;所述凹槽与螺纹孔相通。使用时,将粉笔嵌入凹槽内,转动螺纹杆,使螺纹杆在凹槽内移动,从而实现粉笔的伸缩。

Description

粉笔套
技术领域
本实用新型涉及一种教学用具,尤其是一种粉笔套。
背景技术
平时教师在使用粉笔时,手上总是会沾上一些粉笔末,因此上完课后需要洗手,非常麻烦。且粉笔较长时容易折断,较短时不便于手握持,因此也十分不方便。
实用新型内容
本实用新型的目的是克服现有技术中的不足,提供一种粉笔套,使用该粉笔套不仅卫生,而且可以伸缩,使用方便。
本实用新型解决其技术问题所采用的技术方案是:一种粉笔套,其特征是,包括螺纹杆和柱体,所述柱体的一端设有与螺纹杆配合使用的螺纹孔,所述柱体的另一端设有凹槽,所述凹槽嵌合粉笔的尾部;所述凹槽与螺纹孔相通。使用时,将粉笔嵌入凹槽内,转动螺纹杆,使螺纹杆在凹槽内移动,从而实现粉笔的伸缩。
本实用新型具有以下突出的有益效果:本实用新型结构简单,它不仅可以避免粉笔末沾在手上,同时也实现了粉笔长度的调节。
附图说明
附图1是本实用新型的剖面结构示意图;
附图标记说明:1螺纹杆,2柱体,3螺纹孔,4凹槽,5粉笔。
具体实施方式
如图1所示,一种粉笔套,包括螺纹杆1和柱体2,所述柱体2的一端设有与螺纹杆1配合使用的螺纹孔3,螺纹孔3的长度小于螺纹杆1的长度;所述柱体2的另一端设有凹槽4,所述凹槽4嵌合粉笔5的尾部;所述凹槽4与螺纹孔3相通。
使用时,将粉笔5嵌入凹槽4内,转动螺纹杆1,使螺纹杆1在凹槽4内移动,从而实现粉笔5的伸缩。

Claims (1)

1.一种粉笔套,其特征是,包括螺纹杆和柱体,所述柱体的一端设有与螺纹杆配合使用的螺纹孔,所述柱体的另一端设有凹槽,所述凹槽嵌合粉笔的尾部;所述凹槽与螺纹孔相通。
CN2010206725083U 2010-12-21 2010-12-21 粉笔套 Expired - Fee Related CN201922723U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206725083U CN201922723U (zh) 2010-12-21 2010-12-21 粉笔套

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206725083U CN201922723U (zh) 2010-12-21 2010-12-21 粉笔套

Publications (1)

Publication Number Publication Date
CN201922723U true CN201922723U (zh) 2011-08-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206725083U Expired - Fee Related CN201922723U (zh) 2010-12-21 2010-12-21 粉笔套

Country Status (1)

Country Link
CN (1) CN201922723U (zh)

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110810

Termination date: 20111221