CN201712352U - 一种实用圆规教具 - Google Patents

一种实用圆规教具 Download PDF

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Publication number
CN201712352U
CN201712352U CN2010201844353U CN201020184435U CN201712352U CN 201712352 U CN201712352 U CN 201712352U CN 2010201844353 U CN2010201844353 U CN 2010201844353U CN 201020184435 U CN201020184435 U CN 201020184435U CN 201712352 U CN201712352 U CN 201712352U
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handle
compass
telescopic rod
teaching aid
practical
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Expired - Fee Related
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CN2010201844353U
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赵雪滢
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Abstract

一种实用圆规教具,属于教学工具,主要解决老师在黑板上画圆时,圆规固定杆总易移动的问题。它包括圆规主体,其特征是,所述的圆规主体包括把手、直尺和伸缩杆,所述把手的下端为支点,所述直尺和伸缩杆并排水平固定在把手上,所述伸缩杆一端与把手相连接,另一端设有粉笔固定夹,中部设有长度调节螺丝。使用时,在粉笔固定夹内装入粉笔,将伸缩杆对比直尺调整到所需的半径长度,一手握住把手,一手握住另一端旋转,由于该圆规只有一根伸缩杆,宜于固定,所以不容易打滑,还可根据直尺上的刻度确定圆的半径快速画出所需的圆。

Description

一种实用圆规教具
技术领域
本实用新型涉及一种教学工具,具体地说是一种实用圆规教具。
背景技术
老师在黑板上画圆时要借助于教学专用圆规,普通的教学专用圆规呈“人”字形,旋转作图时,由于黑板是竖立的平面,支点离黑板太远,因此固定杆总易移动,很不方便。
实用新型内容
本实用新型的目的在于提供一种实用圆规教具,该圆规带有直尺,可方便快速的确定所需圆的半径,且支脚更容易固定。
本实用新型解决其技术问题所采取的技术方案是:一种实用圆规教具,包括圆规主体,其特征是,所述的圆规主体包括把手、直尺和伸缩杆,所述把手的下端为支点,所述直尺和伸缩杆并排水平固定在把手上,所述伸缩杆一端与把手相连接,另一端设有粉笔固定夹,中部设有长度调节螺丝。
本实用新型的有益效果是:该圆规只有一根伸缩杆,宜于固定,不容易打滑,还可根据直尺上的刻度确定圆的半径快速画出所需的圆。
附图说明
图1为本实用新型的结构示意图。
图中:1支点,2把手,3长度调节螺丝,4直尺,5伸缩杆,6粉笔固定夹。
具体实施方式
如图1所示。一种实用圆规教具,包括圆规主体,所述的圆规主体包括把手2、直尺4和伸缩杆5,所述把手2的下端为支点1,所述直尺4和伸缩杆5并排水平固定在把手2上,所述伸缩杆5一端与把手2相连接,另一端设有粉笔固定夹6,中部设有长度调节螺丝3。
使用时,在粉笔固定夹6内装入粉笔,将伸缩杆5对比直尺4调整到所需的半径长度,一手握住把手2,一手握住另一端旋转,由于该圆规只有一根伸缩杆5,宜于固定,所以不容易打滑,还可根据直尺4上的刻度确定圆的半径快速画出所需的圆。

Claims (1)

1.一种实用圆规教具,包括圆规主体,其特征是,所述的圆规主体包括把手、直尺和伸缩杆,所述把手的下端为支点,所述直尺和伸缩杆并排水平固定在把手上,所述伸缩杆一端与把手相连接,另一端设有粉笔固定夹,中部设有长度调节螺丝。
CN2010201844353U 2010-05-11 2010-05-11 一种实用圆规教具 Expired - Fee Related CN201712352U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201844353U CN201712352U (zh) 2010-05-11 2010-05-11 一种实用圆规教具

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Application Number Priority Date Filing Date Title
CN2010201844353U CN201712352U (zh) 2010-05-11 2010-05-11 一种实用圆规教具

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CN201712352U true CN201712352U (zh) 2011-01-19

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CN2010201844353U Expired - Fee Related CN201712352U (zh) 2010-05-11 2010-05-11 一种实用圆规教具

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102336098A (zh) * 2011-08-23 2012-02-01 崔守孝 一种教学圆规
CN112406374A (zh) * 2020-11-30 2021-02-26 南宁学院 一种机械绘图仪

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102336098A (zh) * 2011-08-23 2012-02-01 崔守孝 一种教学圆规
CN112406374A (zh) * 2020-11-30 2021-02-26 南宁学院 一种机械绘图仪

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Granted publication date: 20110119

Termination date: 20110511