CN202727748U - 新型圆规 - Google Patents

新型圆规 Download PDF

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Publication number
CN202727748U
CN202727748U CN 201220332878 CN201220332878U CN202727748U CN 202727748 U CN202727748 U CN 202727748U CN 201220332878 CN201220332878 CN 201220332878 CN 201220332878 U CN201220332878 U CN 201220332878U CN 202727748 U CN202727748 U CN 202727748U
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ruler
chalk
handle
sliding sleeve
transparent plastic
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Expired - Fee Related
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CN 201220332878
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English (en)
Inventor
齐凤霞
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Individual
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Individual
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Abstract

本实用新型公开了一种新型圆规,其特征在于,在把手的下端设有吸盘,直尺的一端活动套在把手的把柄上,在直尺上套有透明塑料滑套,粉笔插孔和锁紧孔设在透明塑料滑套上,锁紧螺母和粉笔分别设在锁紧孔和粉笔插孔内。通过以上设置,本实用新型易于固定,不易打滑,还可根据直尺上的刻度,确定需画圆的半径,快速画出所需要的圆。

Description

新型圆规
技术领域
本实用新型涉及一种圆规教具,具体说是一种可调节画圆半径的新型圆规。
背景技术
教师在圆的特性教学时,要在黑板上借助专用教学圆规画圆,普通的专用教学圆规呈“人”字形,在黑板画圆不能精确画出圆的半径,由于黑板是竖立的平面,支点不好固定,容易移动,造成不便。
发明内容
本实用新型的目的便是提供一种可精确画出圆半径的新型圆规。
为了实现上述目的,本实用新型在把手的下端设有吸盘,直尺的一端活动套在把手的把柄上,在直尺上套有透明塑料滑套,粉笔插孔和锁紧孔设在透明塑料滑套上,锁紧螺母和粉笔分别设在锁紧孔和粉笔插孔内。
通过以上设置,本实用新型易于固定,不易打滑,还可根据直尺上的刻度,确定需画圆的半径,快速画出所需要的圆。
附图说明
现结合附图对本实用新型做进一步说明。
图1为本实用新型的结构示意图。
图2为本实用新型透明塑料滑套的侧视图。
图中:1、把手,2、吸盘,3、直尺,4、透明塑料滑套,5、粉笔插孔,6、锁紧孔,7、锁紧螺母,8、粉笔。
具体实施方式
如图1、2所示,本实用新型在把手1的下端设有吸盘2,直尺3的一端活动套在把手1的把柄上,在直尺3上套有透明塑料滑套4,粉笔插孔5和锁紧孔6设在透明塑料滑套4上,锁紧螺母7和粉笔8分别设在锁紧孔6和粉笔插孔5内。通过以上设置,本实用新型可通过调节透明塑料滑套4在直尺3上的位置,将吸盘2吸附在黑板上,旋转直尺3绕把手1旋转一周,粉笔8会在黑板上画出所需要的圆。

Claims (1)

1.新型圆规,其特征在于:在把手的下端设有吸盘,直尺的一端活动套在把手的把柄上,在直尺上套有透明塑料滑套,粉笔插孔和锁紧孔设在透明塑料滑套上,锁紧螺母和粉笔分别设在锁紧孔和粉笔插孔内。
CN 201220332878 2012-07-10 2012-07-10 新型圆规 Expired - Fee Related CN202727748U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220332878 CN202727748U (zh) 2012-07-10 2012-07-10 新型圆规

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220332878 CN202727748U (zh) 2012-07-10 2012-07-10 新型圆规

Publications (1)

Publication Number Publication Date
CN202727748U true CN202727748U (zh) 2013-02-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220332878 Expired - Fee Related CN202727748U (zh) 2012-07-10 2012-07-10 新型圆规

Country Status (1)

Country Link
CN (1) CN202727748U (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104875529A (zh) * 2015-06-23 2015-09-02 樊一鸣 一种画圆工具

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104875529A (zh) * 2015-06-23 2015-09-02 樊一鸣 一种画圆工具

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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: 20130213

Termination date: 20130710