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CN103350590A - 一种粉笔护套 - Google Patents

一种粉笔护套 Download PDF

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Publication number
CN103350590A
CN103350590A CN2013102493422A CN201310249342A CN103350590A CN 103350590 A CN103350590 A CN 103350590A CN 2013102493422 A CN2013102493422 A CN 2013102493422A CN 201310249342 A CN201310249342 A CN 201310249342A CN 103350590 A CN103350590 A CN 103350590A
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chalk
sleeve pipe
protection sleeve
chalk sleeve
jacking piece
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CN103350590B (zh
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杨柳青
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Xi'an Tengwei Computer System Co ltd
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Abstract

本发明公开了一种粉笔护套，包括设有外螺纹的粉笔护套管、顶进块、旋进螺帽，所述粉笔护套管两侧开有对称的开槽，所述顶进块设有镂空、连接筋，顶进块的内部顶板直径小于粉笔护套管的内径，连接筋的宽度小于开槽的宽度，本发明通过设有外螺纹的粉笔护套管，把粉笔放入护套管内，通过顶进块、旋进螺帽，向前逐渐推出粉笔，避免了手直接接触粉笔，同时又可防止粉笔折断，有效使用粉笔，避免浪费等现象。

Description

一种粉笔护套
【技术领域】
本发明涉及一种粉笔护套。 
【背景技术】
目前，学校老师上课时都使用粉笔，一般都直接用手拿粉笔，满手都是粉笔粉末，不卫生影响身体健康，粉笔在使用时容易折断、留下粉笔头造成浪费。 
【发明内容】
本发明的目的就是解决现有技术中的问题，提出一种既可避免手直接接触粉笔、有能防止粉笔折断等浪费现象的粉笔护套。 
为实现上述目的，本发明提出了一种粉笔护套，包括设有外螺纹的粉笔护套管、顶进块、旋进螺帽，所述粉笔护套管两侧开有对称的开槽，所述顶进块设有镂空、连接筋，镂空的外圆直径大于粉笔护套管的外径，顶进块的内部顶板直径小于粉笔护套管的内径，连接筋的宽度小于开槽的宽度，安装时把顶进块的连接筋对准开槽，能套在粉笔护套管上。 
作为优选，在粉笔护套管尾部设有尾帽。 
本发明的有益效果：本发明通过设有外螺纹的粉笔护套管，把粉笔放入护套管内，通过顶进块、旋进螺帽，向前逐渐推出粉笔，避免了手直接接触粉笔，同时又可防止粉笔折断，有效使用粉笔，避免浪费等现象。 
本发明的特征及优点将通过实施例结合附图进行详细说明。 
【附图说明】
图1是本发明一种粉笔护套的结构示意图。 
图2是本发明顶进块的结构示意图。 
【具体实施方式】
参阅图，本发明设计了一种粉笔护套，包括设有外螺纹的粉笔护套管1、顶进块3、旋进螺帽4，所述粉笔护套管1两侧开有对称的开槽2，所述顶进块3设有镂空7、连接筋8，镂空7的外圆直径大于粉笔护套管1的外径，顶进块3的内部顶板9直径小于粉笔护套管1的内径，连接筋8的宽度小于开槽2的宽度，为使用更舒适，尾部设置尾帽5。 
本发明工作过程： 
本发明一种粉笔护套，先把粉笔6从开槽侧放入粉笔护套管1，安装顶3进块，把顶进块3的连接筋8对准开槽2，套在粉笔护套管1上，再安装旋进螺帽4，最后安装尾帽5，使用时转动旋进螺帽4，带动顶进块3向前推，顶进块3的内部顶板9推动粉笔6前进。 
上述实施例是对本发明的说明，不是对本发明的限定，任何对本发明简单变换后的方案均属于本发明的保护范围。 

Claims (2)

1.一种粉笔护套，包括设有外螺纹的粉笔护套管(1)、顶进块(3)、旋进螺帽(4)，所述粉笔护套管(1)两侧开有对称的开槽(2)，所述顶进块(3)设有镂空(7)、连接筋(8)，镂空(7)的外圆直径大于粉笔护套管(1)的外径，顶进块(3)的内部顶板(9)直径小于粉笔护套管(1)的内径，连接筋(8)的宽度小于开槽(2)的宽度。
2.如权利要求1所述的一种粉笔护套，其特征在于粉笔护套管(1)尾部设有尾帽(5)。
CN201310249342.2A 2013-06-12 2013-06-12 一种粉笔护套 Active CN103350590B (zh)

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CN103350590B CN103350590B (zh) 2015-03-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113415096A (zh) * 2021-07-02 2021-09-21 卢辉 一种置于指甲的可伸缩装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04310800A (ja) * 1991-04-10 1992-11-02 Kotobuki:Kk 棒状物繰り出し容器及び筆記具
JPH1156468A (ja) * 1997-08-19 1999-03-02 Shiseido Co Ltd 化粧料等の繰出容器
JPH11139470A (ja) * 1997-11-04 1999-05-25 Kotobuki:Kk 棒状物繰り出し容器
CN2366283Y (zh) * 1999-02-03 2000-03-01 严丛茂 带笔壳粉笔
CN1373050A (zh) * 2001-03-03 2002-10-09 刘卫平 自动铅笔
CN2843871Y (zh) * 2005-09-15 2006-12-06 林泓颜 粉笔保护盒
CN201158239Y (zh) * 2008-03-03 2008-12-03 杨文坚 便携粉笔握持器
CN102079197A (zh) * 2009-11-30 2011-06-01 上海市复兴高级中学 一种可除尘的护手粉笔套

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04310800A (ja) * 1991-04-10 1992-11-02 Kotobuki:Kk 棒状物繰り出し容器及び筆記具
JPH1156468A (ja) * 1997-08-19 1999-03-02 Shiseido Co Ltd 化粧料等の繰出容器
JPH11139470A (ja) * 1997-11-04 1999-05-25 Kotobuki:Kk 棒状物繰り出し容器
CN2366283Y (zh) * 1999-02-03 2000-03-01 严丛茂 带笔壳粉笔
CN1373050A (zh) * 2001-03-03 2002-10-09 刘卫平 自动铅笔
CN2843871Y (zh) * 2005-09-15 2006-12-06 林泓颜 粉笔保护盒
CN201158239Y (zh) * 2008-03-03 2008-12-03 杨文坚 便携粉笔握持器
CN102079197A (zh) * 2009-11-30 2011-06-01 上海市复兴高级中学 一种可除尘的护手粉笔套

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113415096A (zh) * 2021-07-02 2021-09-21 卢辉 一种置于指甲的可伸缩装置

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