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CN201257852Y - 一种教学用圆规 - Google Patents

一种教学用圆规 Download PDF

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Publication number
CN201257852Y
CN201257852Y CNU2008201903053U CN200820190305U CN201257852Y CN 201257852 Y CN201257852 Y CN 201257852Y CN U2008201903053 U CNU2008201903053 U CN U2008201903053U CN 200820190305 U CN200820190305 U CN 200820190305U CN 201257852 Y CN201257852 Y CN 201257852Y
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CNU2008201903053U
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English (en)
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焦逸菲
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Abstract

本实用新型提供一种教学用圆规,在圆规的定针支腿下端通过万向球连接胶垫,画圆支腿下端设置用于固定粉笔的松紧螺帽。本实用新型可以很方便的在光滑的黑板上定位画出圆形图,在使用过程中,可以随需要通过松紧螺帽调整粉笔的长短。

Description

一种教学用圆规
技术领域
本实用新型涉及一种圆规,具体的说是一种教学用圆规。
背景技术
老师在讲课时,要经常使用圆规在黑板上画圆讲解,由于黑板都过于光滑,常用的教学圆规稍不小心就会出动滑动现象,且粉笔头也不好随需要及时调整。
发明内容
本实用新型提供一种教学用圆规,具有使用稳定和很方便调整粉笔头的特点。
本实用新型包括圆规及走针支腿、画圆支腿,采用的技术方案是:在圆规的定针支腿下端通过万向球连接胶垫,画圆支腿下端设置用于固定粉笔的松紧螺帽。
本实用新型的有益效果在于:可以很方便的在光滑的黑板上定位画出圆形图,在使用过程中,可以随需要通过松紧螺帽调整粉笔的长短。
附图说明
下面结合附图和实施例对本实用新型作进一步详述。
附图为本实用新型结构示意图。
具体实施方式
附图实施例所示:在圆规1的定针支腿2下端通过万向球4连接胶垫5,画圆支腿3下端设置用于固定粉笔的松紧螺帽6。

Claims (1)

1、一种教学用圆规,包括圆规(1)及走针支腿(2)、画圆支腿(3),其特征在于:在圆规(1)的定针支腿(2)下端通过万向球(4)连接胶垫(5),画圆支腿(3)下端设置用于固定粉笔的松紧螺帽(6)。
CNU2008201903053U 2008-08-15 2008-08-15 一种教学用圆规 Expired - Fee Related CN201257852Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201903053U CN201257852Y (zh) 2008-08-15 2008-08-15 一种教学用圆规

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201903053U CN201257852Y (zh) 2008-08-15 2008-08-15 一种教学用圆规

Publications (1)

Publication Number Publication Date
CN201257852Y true CN201257852Y (zh) 2009-06-17

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Family Applications (1)

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CNU2008201903053U Expired - Fee Related CN201257852Y (zh) 2008-08-15 2008-08-15 一种教学用圆规

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CN (1) CN201257852Y (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108016182A (zh) * 2017-12-27 2018-05-11 徐靖雅 一种教学用黑板圆规

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108016182A (zh) * 2017-12-27 2018-05-11 徐靖雅 一种教学用黑板圆规

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GR01 Patent grant
C17 Cessation of patent right
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Granted publication date: 20090617

Termination date: 20090915