CN202528684U - 一种圆规 - Google Patents

一种圆规 Download PDF

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Publication number
CN202528684U
CN202528684U CN2012200990101U CN201220099010U CN202528684U CN 202528684 U CN202528684 U CN 202528684U CN 2012200990101 U CN2012200990101 U CN 2012200990101U CN 201220099010 U CN201220099010 U CN 201220099010U CN 202528684 U CN202528684 U CN 202528684U
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China
Prior art keywords
rotating shaft
dwang
rod
fixed bar
rotating
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Expired - Fee Related
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CN2012200990101U
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English (en)
Inventor
魏光麒
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Individual
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Individual
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Abstract

一种圆规,属于文具,它包括固定杆、转动杆和转轴,所述的固定杆和转动杆通过转轴相连接,固定杆下端安装针尖,转动杆下端固定笔芯,其特征是,所述的固定杆外侧设有一个把手,内侧安装一转轴,转轴上安装有第二转动杆。本实用新型设有一个固定杆和两个转动杆,可以一次性画出圆环形,将第二转动杆向上旋转,可画出圆形,操作简便,提高绘图效率。

Description

一种圆规
技术领域
本实用新型涉及一种文具,具体地说是一种圆规。
背景技术
人们经常需要用圆规画圆环形,传统的圆规一次只能画一个圆,并不能一次性画出圆环形,当人们画好第一个圆,再画第二个圆时,需要重新测量,找准圆心,浪费时间。
实用新型内容
本实用新型的目的在于提供一种圆规,该圆规可一次性画出圆环形。
本实用新型解决其技术问题所采取的技术方案是:一种圆规,包括固定杆、转动杆和转轴,所述的固定杆和转动杆通过转轴相连接,固定杆下端安装针尖,转动杆下端固定笔芯,所述的固定杆外侧设有一个把手,内侧安装一转轴,转轴上安装有第二转动杆。
本实用新型的有益效果是:设有一个固定杆和两个转动杆,可以一次性画出圆环形,将第二转动杆向上旋转,可画出圆形,操作简便,提高绘图效率。
附图说明
图1为本实用新型的结构示意图。
图中:1固定杆,2转动杆,3转轴,4针尖,5第二转动杆,6把手,7笔芯。
具体实施方式
如图1所示。一种圆规,包括固定杆1、转动杆2和转轴3,所述的固定杆1和转动杆2通过转轴3相连接,固定杆1下端安装针尖4,转动杆2下端固定笔芯7,所述的固定杆1外侧设有一个把手6,内侧安装一转轴,转轴上安装有第二转动杆5,第二转动杆5可绕转轴转动。
需要画圆形时,先将第二转动杆5向上旋转,调整好针尖4和转动杆2上笔芯7之间的距离,即可画圆形;需要画圆环时,先将针尖4至转动杆2上笔芯7的距离调整为大圆半径,再将针尖4至第二转动杆5上笔芯的距离调整为小圆半径,一只手把住圆规顶端,一只手握住把手6,即可一次性画出圆环。

Claims (1)

1.一种圆规,包括固定杆、转动杆和转轴,所述的固定杆和转动杆通过转轴相连接,固定杆下端安装针尖,转动杆下端固定笔芯,其特征是,所述的固定杆外侧设有一个把手,内侧安装一转轴,转轴上安装有第二转动杆。
CN2012200990101U 2012-03-16 2012-03-16 一种圆规 Expired - Fee Related CN202528684U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200990101U CN202528684U (zh) 2012-03-16 2012-03-16 一种圆规

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200990101U CN202528684U (zh) 2012-03-16 2012-03-16 一种圆规

Publications (1)

Publication Number Publication Date
CN202528684U true CN202528684U (zh) 2012-11-14

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ID=47129887

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012200990101U Expired - Fee Related CN202528684U (zh) 2012-03-16 2012-03-16 一种圆规

Country Status (1)

Country Link
CN (1) CN202528684U (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: 20121114

Termination date: 20130316