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CN201151297Y - 精细圆规 - Google Patents

精细圆规 Download PDF

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Publication number
CN201151297Y
CN201151297Y CNU2007203001904U CN200720300190U CN201151297Y CN 201151297 Y CN201151297 Y CN 201151297Y CN U2007203001904 U CNU2007203001904 U CN U2007203001904U CN 200720300190 U CN200720300190 U CN 200720300190U CN 201151297 Y CN201151297 Y CN 201151297Y
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China
Prior art keywords
compasses
meticulous
fine
utility
model
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2007203001904U
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English (en)
Inventor
黎鹏
王飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan No 11 Middle School
Original Assignee
Wuhan No 11 Middle School
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to CNU2007203001904U priority Critical patent/CN201151297Y/zh
Application granted granted Critical
Publication of CN201151297Y publication Critical patent/CN201151297Y/zh
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Abstract

一种精细圆规,包括:圆规(1),圆规(1)的转轴上装有一个角度盘(2)。其优点是:结构简单,使用方便,使圆规制图更加精确,特别适合于学习、办公使用。

Description

精细圆规
技术领域
本实用新型涉及学习用品技术领域,具体的说是一种精细圆规。
背景技术
现在的圆规,要进行准确的制图时,往往必须在刻度尺上量出规定长度,这样既费时又不精确。
实用新型内容
本实用新型的目的是设计一种通过读取圆规两脚张开的夹角来精确确定圆规两脚间距离的精细圆规。
本实用新型精细圆规,包括:圆规1,圆规1的转轴上装有一个角度盘2。
根据圆规两脚张开的夹角和圆规的脚长,可以计算出圆规两脚间距离。
本实用新型精细圆规精确制图是这样实现的:每种圆规的脚长L是固定的,而圆规两脚张开的夹角θ可以在角度盘2上读取,则两脚间距离S为:
S=2Lsin(θ/2)
本实用新型精细圆规的优点是:结构简单,使用方便,使圆规制图更加精确,特别适合于学习、办公使用。
附图说明
附图为精细圆规的结构示意图。
具体实施方式
根据附图所示,精细圆规,包括:圆规1,圆规1的转轴上装有一个角度盘2。

Claims (1)

1、一种精细圆规,包括:圆规(1),其特征在于:圆规(1)的转轴上装有一个角度盘(2)。
CNU2007203001904U 2007-12-20 2007-12-20 精细圆规 Expired - Fee Related CN201151297Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007203001904U CN201151297Y (zh) 2007-12-20 2007-12-20 精细圆规

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007203001904U CN201151297Y (zh) 2007-12-20 2007-12-20 精细圆规

Publications (1)

Publication Number Publication Date
CN201151297Y true CN201151297Y (zh) 2008-11-19

Family

ID=40126976

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007203001904U Expired - Fee Related CN201151297Y (zh) 2007-12-20 2007-12-20 精细圆规

Country Status (1)

Country Link
CN (1) CN201151297Y (zh)

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C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee