CN2666686Y - 划规 - Google Patents

划规 Download PDF

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Publication number
CN2666686Y
CN2666686Y CN 200320105867 CN200320105867U CN2666686Y CN 2666686 Y CN2666686 Y CN 2666686Y CN 200320105867 CN200320105867 CN 200320105867 CN 200320105867 U CN200320105867 U CN 200320105867U CN 2666686 Y CN2666686 Y CN 2666686Y
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Expired - Fee Related
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CN 200320105867
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English (en)
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马雨晴
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Individual
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Abstract

划规,属教学用具,具体为划规的设计与制造技术领域。由吸盘和板尺构成,在板尺的刻度数字处带有粉笔孔。它的用法很简单,将吸盘吸在黑板上。将粉笔插入需要的粉笔孔内,旋转一周,也就是以吸盘为圆心,划出需要直径的圆。其结构简单,设计合理。

Description

划规
                      技术领域
本实用新型属教学用具,具体是一种划规的设计与制造技术领域。
                      背景技术
目前在数学教学中,教师在黑板划圆时,都是使用教学圆规,划出一定直径的圆,须先量出半径长度,才能划出。量起来比较麻烦。目前还没有与本产品相同的划规在教学中使用。
                      发明内容
本实用新型的目的是提供一种直接划出一定直径的划规,以解决现有产品存在的在使用上较为麻烦的问题。
本实用新型的结构如附图所示:由一吸盘和板尺构成。在板尺的顶部有一吸盘。尺的两侧带有刻度数字。在相对刻度数字处带有粉笔孔。吸盘上的板尺可以自由转动。本实用新型的使用方法是:先将吸盘吸在黑板上。需要划一定直径有圆时,在板尺上找出其半径长度,然后将粉笔插入粉笔孔内,粉笔旋转一周,即可划出需要直径的圆。本产品结构简单,设计合理,使用起来方便快捷,是一种理想的教学用具。
                      附图说明
附图为本实用新型结构示意图
1-吸盘  2-粉笔孔  3-板尺
                    具体实施方式
本实用新型的结构如附图所示:在板尺(3)的顶部有一吸盘(1),在板尺刻度数字对应处带有粉笔孔(2)。

Claims (1)

  1. 划规,其特征在于板尺(3)的顶部有一吸盘(1),在板尺刻度数字对应处带有粉笔孔(2)。
CN 200320105867 2003-12-06 2003-12-06 划规 Expired - Fee Related CN2666686Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200320105867 CN2666686Y (zh) 2003-12-06 2003-12-06 划规

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200320105867 CN2666686Y (zh) 2003-12-06 2003-12-06 划规

Publications (1)

Publication Number Publication Date
CN2666686Y true CN2666686Y (zh) 2004-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200320105867 Expired - Fee Related CN2666686Y (zh) 2003-12-06 2003-12-06 划规

Country Status (1)

Country Link
CN (1) CN2666686Y (zh)

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C19 Lapse of patent right due to non-payment of the annual fee
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