# CN202319550U - 数学教学用圆规 - Google Patents

## Info

Publication number
CN202319550U
CN202319550U CN2011204503980U CN201120450398U CN202319550U CN 202319550 U CN202319550 U CN 202319550U CN 2011204503980 U CN2011204503980 U CN 2011204503980U CN 201120450398 U CN201120450398 U CN 201120450398U CN 202319550 U CN202319550 U CN 202319550U
Authority
CN
China
Prior art keywords
base
rotating shaft
chalk
compass
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
CN2011204503980U
Other languages
English (en)
Inventor

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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to CN2011204503980U priority Critical patent/CN202319550U/zh
Application granted granted Critical
Publication of CN202319550U publication Critical patent/CN202319550U/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

## Landscapes

• Drawing Aids And Blackboards (AREA)

## Claims (2)

1.一种数学教学用圆规，它包括底座(1)，其特征在于：在所述底座(1)的底部连接有转轴(7)，在所述转轴(7)的另一端连接有吸盘(8)，在所述底座(1)内且垂直所述转轴(7)的方向套装有第一伸缩杆(2)，在所述第一伸缩杆(2)内套装有第二伸缩杆(3)，在所述第二伸缩杆(3)的另一端部设有粉笔夹持器(4)，一粉笔(6)穿过所述粉笔夹持器(4)的通孔(9)并由紧固螺栓(5)紧固。
2.根据权利要求1所述的数学教学用圆规，其特征在于：在所述底座(1)、第一伸缩杆(2)、第二伸缩杆(3)和粉笔夹持器(4)的中心线上连续的设有刻度线(10)。
CN2011204503980U 2011-11-05 2011-11-05 数学教学用圆规 Expired - Fee Related CN202319550U (zh)

## Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204503980U CN202319550U (zh) 2011-11-05 2011-11-05 数学教学用圆规

## Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204503980U CN202319550U (zh) 2011-11-05 2011-11-05 数学教学用圆规

## Publications (1)

Publication Number Publication Date
CN202319550U true CN202319550U (zh) 2012-07-11

# Family

## Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204503980U Expired - Fee Related CN202319550U (zh) 2011-11-05 2011-11-05 数学教学用圆规

## Country Status (1)

CN (1) CN202319550U (zh)

## Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103522801A (zh) * 2013-10-22 2014-01-22 无锡俊达测试技术服务有限公司 一种智能圆规
CN103950324A (zh) * 2014-04-30 2014-07-30 电子科技大学 便携式四自由度教学圆规
CN105235420A (zh) * 2015-09-25 2016-01-13 苏州市职业大学 一种机械臂式精密绘圆装置

## Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103522801A (zh) * 2013-10-22 2014-01-22 无锡俊达测试技术服务有限公司 一种智能圆规
CN103950324A (zh) * 2014-04-30 2014-07-30 电子科技大学 便携式四自由度教学圆规
CN105235420A (zh) * 2015-09-25 2016-01-13 苏州市职业大学 一种机械臂式精密绘圆装置

## Similar Documents

Publication Publication Date Title
CN202319550U (zh) 数学教学用圆规
CN202896066U (zh) 多功能数学教学用圆规
CN205130736U (zh) 一种数学教学用吸盘固定抽拉式圆规
CN203485640U (zh) 数学教学专用多功能尺
CN203995299U (zh) 一种新型数学教学板
CN202368183U (zh) 数学教具
CN202345177U (zh) 数学教学用可调式圆规
CN204605311U (zh) 数学教学用圆规
CN202319564U (zh) 多功能数学教学用具
CN201931855U (zh) 一种多功能尺
CN203242198U (zh) 一种多功能教学黑板用圆规
CN201979930U (zh) 伸缩式圆规尺
CN205033808U (zh) 一种高中数学教学用教具
CN202293903U (zh) 一种新型多功能尺子
CN204196523U (zh) 数学教具尺
CN204506250U (zh) 一种教学用三角板
CN203110681U (zh) 一种小学数学教学尺
CN202557105U (zh) 一种多功能数学教学用具
CN201951099U (zh) 一种多功能绘图仪
CN203013025U (zh) 改进的教杆
CN202046103U (zh) 数学多用尺
CN202847258U (zh) 一种多功能数学尺
CN202293914U (zh) 一种数学教学用尺具装置
CN201619351U (zh) 新型画圆器
CN202213388U (zh) 数学教具

## Legal Events

Date Code Title Description
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: 20120711

Termination date: 20121105