CN203078071U - 粉笔圆规 - Google Patents

粉笔圆规 Download PDF

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Publication number
CN203078071U
CN203078071U CN 201220751019 CN201220751019U CN203078071U CN 203078071 U CN203078071 U CN 203078071U CN 201220751019 CN201220751019 CN 201220751019 CN 201220751019 U CN201220751019 U CN 201220751019U CN 203078071 U CN203078071 U CN 203078071U
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chalk
compasses
leg
pair
permanent magnet
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CN 201220751019
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English (en)
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沈世龙
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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粉笔圆规,包括固定支脚、旋转支脚、支架、手柄,旋转支脚呈圆桶形,内部装有粉笔,旋转支脚端部设有固定粉笔的螺钉,固定支脚的端部设有胶接的永磁体。这样设计的本实用新型携带方便,结构简单,在使用粉笔圆规时,能够按需要调节粉笔的长度,永磁铁吸附在金属黑板上,不易产生滑动,提高了画圆的质量。

Description

粉笔圆规
技术领域
本实用新型涉及学习用品领域,尤其是涉及一种粉笔圆规。
背景技术
目前,在教学中经常使用很多教学工具,例如圆规。但是,随着黑板的多样化,出现了金属黑板,在金属黑板上使用传统的教学工具圆规画图,就显得越来越不方便了,极易滑动,很难画出标准的圆,大大影响了教学质量。
实用新型内容
本实用新型是为了克服以上缺点而提出的,其目的是设计一种粉笔圆规。
本实用新型是按以下技术方案实现的。
一种粉笔圆规,包括固定支脚、旋转支脚、支架、手柄,旋转支脚呈圆桶形,内部装有粉笔,旋转支脚端部设有固定粉笔的螺钉,固定支脚的端部设有胶接的永磁体。
本实用新型的积极效果和优点是:携带方便,结构简单,在使用粉笔圆规时,能够按需要调节粉笔的长度,永磁铁吸附在金属黑板上,不易产生滑动,提高了画圆的质量。
附图说明
图1是本实用新型粉笔圆规的结构示意图。
附图中主要部件说明:
1固定支脚    2旋转支脚
3支架        4手柄
5粉笔        6螺钉
7永磁体
具体实施方式
下面结合附图详细说明本实用新型的具体实施方式。
如图1所示,一种粉笔圆规,包括固定支脚1、旋转支脚2、支架3、手柄4,旋转支脚2呈圆桶形,内部装有粉笔5,旋转支脚2端部设有固定粉笔5的螺钉6,固定支脚1的端部设有胶接的永磁体7。
本实用新型携带方便,结构简单,在使用粉笔圆规时,能够按需要调节粉笔的长度,永磁铁吸附在金属黑板上,不易产生滑动,提高了画圆的质量。

Claims (1)

1.一种粉笔圆规,包括固定支脚(1)、旋转支脚(2)、支架(3)、手柄(4),其特征是:旋转支脚(2)呈圆桶形,内部装有粉笔(5),旋转支脚(2)端部设有固定粉笔(5)的螺钉(6),固定支脚(1)的端部设有胶接的永磁体(7)。
CN 201220751019 2012-12-31 2012-12-31 粉笔圆规 Expired - Fee Related CN203078071U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220751019 CN203078071U (zh) 2012-12-31 2012-12-31 粉笔圆规

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220751019 CN203078071U (zh) 2012-12-31 2012-12-31 粉笔圆规

Publications (1)

Publication Number Publication Date
CN203078071U true CN203078071U (zh) 2013-07-24

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ID=48823939

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220751019 Expired - Fee Related CN203078071U (zh) 2012-12-31 2012-12-31 粉笔圆规

Country Status (1)

Country Link
CN (1) CN203078071U (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105599502A (zh) * 2016-03-03 2016-05-25 游婧 不伤黑板的教具圆规

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105599502A (zh) * 2016-03-03 2016-05-25 游婧 不伤黑板的教具圆规

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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: 20130724

Termination date: 20131231