CN104626826A - 教学用圆规 - Google Patents

教学用圆规 Download PDF

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Publication number
CN104626826A
CN104626826A CN201310543373.9A CN201310543373A CN104626826A CN 104626826 A CN104626826 A CN 104626826A CN 201310543373 A CN201310543373 A CN 201310543373A CN 104626826 A CN104626826 A CN 104626826A
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CN
China
Prior art keywords
chalk
compasses
teaching
blackboard
telescopic
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Pending
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CN201310543373.9A
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English (en)
Inventor
史兆山
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN201310543373.9A priority Critical patent/CN104626826A/zh
Publication of CN104626826A publication Critical patent/CN104626826A/zh
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/02—Compasses
    • B43L9/04—Beam compasses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/16—Features common to compasses, dividers, and callipers
    • B43L9/24—Means for mounting points or writing appliances on legs

Abstract

本发明公开了一种教学用圆规，具有伸缩刻度尺，伸缩刻度尺一端连有固定帽，另一端连有一个粉笔槽，粉笔槽可以插入粉笔，伸缩刻度尺通过活动接口与固定帽相连，固定帽另一端中央通过连接杆连接一个小吸盘。本发明可以有效的帮助老师在黑板上用粉笔画圆。

Description

教学用圆规
技术领域    本发明直接涉及一种圆规。
背景技术   在中学几何学习中老师经常要在黑板上画圆，但是由于黑板十分光滑坚硬，普通类型的圆规很难做到，给教学带来了不便。
发明内容    本发明的目的就是要提供一种教学用圆规，他可以有效的帮助老师在黑板上用粉笔画圆。
本发明的目的是这样实现的：一种教学用圆规，具有伸缩刻度尺，伸缩刻度尺一端连有固定帽，另一端连有一个粉笔槽，粉笔槽可以插入粉笔，伸缩刻度尺通过活动接口与固定帽相连，固定帽另一端中央通过连接杆连接一个小吸盘。
附图说明    附图是本发明的结构示意图，下面结合附图对本发明作进一步说明。
具体实施方式    附图示出了本发明教学用圆规，具有伸缩刻度尺4，伸缩刻度尺4一端连有固定帽，另一端连有一个粉笔槽5，粉笔槽5可以插入粉笔6，其特征是：伸缩刻度尺4通过活动接口3与固定帽相连，固定帽另一端中央通过连接杆2连接一个小吸盘1。

Claims (1)

1.一种教学用圆规，具有伸缩刻度尺（4），伸缩刻度尺（4）一端连有固定帽，另一端连有一个粉笔槽（5），粉笔槽（5）可以插入粉笔（6），其特征是：伸缩刻度尺（4）通过活动接口（3）与固定帽相连，固定帽另一端中央通过连接杆（2）连接一个小吸盘（1）。
CN201310543373.9A 2013-11-06 2013-11-06 教学用圆规 Pending CN104626826A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310543373.9A CN104626826A (zh) 2013-11-06 2013-11-06 教学用圆规

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310543373.9A CN104626826A (zh) 2013-11-06 2013-11-06 教学用圆规

Publications (1)

Publication Number Publication Date
CN104626826A true CN104626826A (zh) 2015-05-20

Family

ID=53206254

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310543373.9A Pending CN104626826A (zh) 2013-11-06 2013-11-06 教学用圆规

Country Status (1)

Country Link
CN (1) CN104626826A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106626906A (zh) * 2016-12-30 2017-05-10 徐书晗 一种多固定点教学用圆规组件

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106626906A (zh) * 2016-12-30 2017-05-10 徐书晗 一种多固定点教学用圆规组件

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Application publication date: 20150520