CN201728945U - 伸缩式粉笔套 - Google Patents

伸缩式粉笔套 Download PDF

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Publication number
CN201728945U
CN201728945U CN2010202122176U CN201020212217U CN201728945U CN 201728945 U CN201728945 U CN 201728945U CN 2010202122176 U CN2010202122176 U CN 2010202122176U CN 201020212217 U CN201020212217 U CN 201020212217U CN 201728945 U CN201728945 U CN 201728945U
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chalk
sleeve
telescopic
chalk sleeve
pen container
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Expired - Fee Related
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CN2010202122176U
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吕睿
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Individual
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Individual
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Abstract

本实用新型是一种伸缩式粉笔套,粉笔(1)设置在一个带外螺纹的笔筒(3)上,所述笔筒(3)装在一个带内螺纹的外套(2)当中,二者螺纹配合可使笔筒(3)在外套(2)中旋转上升或下降。本实用新型可使粉笔在粉笔套内向外自由伸缩,从而在保护手指的同时防止粉笔的折断,结构简单,使用方便。

Description

伸缩式粉笔套
(一)、技术领域
本实用新型涉及一种粉笔套,特别涉及一种伸缩式粉笔套。
(二)、背景技术
目前我国绝大多数地区的学校采用粉笔在黑板上书写的方式来教课,由于粉笔的原料是石灰,长期接触会烧伤手指,而且不卫生,并且由于粉笔太脆,书写及平时放置时粉笔容易折断,而产生很多不易书写的粉笔头,降低粉笔的利用率。
(三)、实用新型内容
本实用新型所要解决的技术问题是,提供一种伸缩式粉笔套,可在写字时粉笔不与手指直接接触,且使粉笔可在其内自由伸缩,保护粉笔不易折断,以克服现有气吹的缺陷。
本实用新型解决上述技术问题所采用的技术方案如下:
一种伸缩式粉笔套,其特征在于:粉笔设置在一个带外螺纹的笔筒上,所述笔筒装在一个带内螺纹的外套当中,二者螺纹配合可使笔筒在外套中旋转上升或下降。所述外套与粉笔冒配合连接。
本实用新型的积极效果在于:
本装置通过将粉笔设置在粉笔套内,可使其在粉笔套内向外自由伸缩,从而在保护手指的同时防止粉笔的折断,结构简单,使用方便。
(四)、附图说明
图1是本实用新型的结构示意图。
(五)、具体实施方式
下面结合附图和实施例进一步说明本实用新型。
如图1所示,本实用新型包括一种伸缩式粉笔套,粉笔1设置在一个带外螺纹的笔筒3上,所述笔筒3装在一个带内螺纹的外套2当中,二者螺纹配合可使笔筒3在外套2中旋转上升或下降;并跟着带动粉笔1进行伸进伸出。使用时,将粉笔1插入笔筒3内,旋转笔筒3使之上升,粉笔1露出,使用结束后反向旋转笔筒3使之下降,粉笔1连同笔筒3缩回外套2中。

Claims (1)

1.一种伸缩式粉笔套,其特征在于:粉笔(1)设置在一个带外螺纹的笔筒(3)上,所述笔筒(3)装在一个带内螺纹的外套(2)当中,二者螺纹配合可使笔筒(3)在外套(2)中旋转上升或下降。
CN2010202122176U 2010-05-27 2010-05-27 伸缩式粉笔套 Expired - Fee Related CN201728945U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202122176U CN201728945U (zh) 2010-05-27 2010-05-27 伸缩式粉笔套

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202122176U CN201728945U (zh) 2010-05-27 2010-05-27 伸缩式粉笔套

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CN201728945U true CN201728945U (zh) 2011-02-02

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CN2010202122176U Expired - Fee Related CN201728945U (zh) 2010-05-27 2010-05-27 伸缩式粉笔套

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CN (1) CN201728945U (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110549768A (zh) * 2019-09-02 2019-12-10 温州市骄泰文具有限公司 一种不可擦塑料蜡笔及制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110549768A (zh) * 2019-09-02 2019-12-10 温州市骄泰文具有限公司 一种不可擦塑料蜡笔及制备方法

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110202

Termination date: 20110527