# CN204845272U - 三角形余弦定理演示与绘图工具 - Google Patents

## Info

Publication number
CN204845272U
CN204845272U CN201520607369.9U CN201520607369U CN204845272U CN 204845272 U CN204845272 U CN 204845272U CN 201520607369 U CN201520607369 U CN 201520607369U CN 204845272 U CN204845272 U CN 204845272U
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CN201520607369.9U
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English (en)
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North China University of Science and Technology
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North China University of Science and Technology
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## Claims (3)

1.三角形余弦定理演示与绘图工具，包括量角器(1)、第一刻度尺(2)、第二刻度尺(3)、旋转紧固销轴(4)、插针孔(5)、圆珠笔芯(6)、笔芯套筒(7)、圆规针(8)、螺丝(9)、引线(10)、圆规半径尺(11)；其特征在于：量角器(1)下部与第一刻度尺(2)固定在一起，且位于同一平面内；第一刻度尺(2)与第二刻度尺(3)通过旋转紧固销轴(4)连接；第二刻度尺(3)可以在量角器(1)旋转，并通过量角器(1)显示与第一刻度尺(2)的夹角；插针孔(5)分别设置在第一刻度尺(2)、第二刻度尺(3)刻度上；笔芯套筒(7)安装在第二刻度尺(3)另一端；圆珠笔芯(6)插入笔芯套筒(7)并通过螺丝紧固；圆规针(8)通过螺丝(9)安装在第一刻度尺(2)右端；引线(10)分别连接第一刻度尺(2)和第二刻度尺(3)的插针孔(5)，并拉紧；圆规半径尺(11)刻在量角器(1)与第一刻度尺(2)的平面上；第二刻度尺(3)可以在圆规半径尺(11)上方移动。
2.根据权利要求1所述的三角形余弦定理演示与绘图工具，其特征在于：量角器(1)与第一刻度尺(2)下方设有刻度，可以画直线和测量距离；插针孔(5)在第一刻度尺(2)、第二刻度尺(3)上设有多个；第一刻度尺(2)、第二刻度尺(3)、圆规半径尺(11)均设有刻度；第一刻度尺(2)厚度略大于圆规针的厚度。
3.根据权利要求1所述的三角形余弦定理演示与绘图工具，其特征在于：量角器(1)、第一刻度尺(2)和圆规半径尺(11)位于同一平面上。
CN201520607369.9U 2015-08-10 2015-08-10 三角形余弦定理演示与绘图工具 Expired - Fee Related CN204845272U (zh)

## Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520607369.9U CN204845272U (zh) 2015-08-10 2015-08-10 三角形余弦定理演示与绘图工具

## Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520607369.9U CN204845272U (zh) 2015-08-10 2015-08-10 三角形余弦定理演示与绘图工具

## Publications (1)

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CN204845272U true CN204845272U (zh) 2015-12-09

# Family

## Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520607369.9U Expired - Fee Related CN204845272U (zh) 2015-08-10 2015-08-10 三角形余弦定理演示与绘图工具

## Country Status (1)

CN (1) CN204845272U (zh)

## Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108382102A (zh) * 2018-05-08 2018-08-10 佛山拾念科技有限公司 一种多用途学生用数学尺装置

## Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108382102A (zh) * 2018-05-08 2018-08-10 佛山拾念科技有限公司 一种多用途学生用数学尺装置

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151209

Termination date: 20160810

CF01 Termination of patent right due to non-payment of annual fee