CN107284086A - A kind of teaching aid semi-circle ruler - Google Patents
A kind of teaching aid semi-circle ruler Download PDFInfo
- Publication number
- CN107284086A CN107284086A CN201710589572.1A CN201710589572A CN107284086A CN 107284086 A CN107284086 A CN 107284086A CN 201710589572 A CN201710589572 A CN 201710589572A CN 107284086 A CN107284086 A CN 107284086A
- Authority
- CN
- China
- Prior art keywords
- ruler
- slideway
- circle
- semi
- semicircle
- 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.)
- Pending
Links
Classifications
-
- 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
Abstract
The invention discloses a kind of teaching aid semi-circle ruler, with semi-circle ruler, semicircle slideway, ruler slideway, slidably chalk sleeve, navigation button, as a result of being uniformly provided with radian on semi-circle ruler, semicircle slideway is set inside semi-circle ruler, in the semi-circle ruler center of circle to setting ruler slideway between semicircle slideway, ruler slideway is connected with semicircle slideway, scale is uniformly provided with ruler slideway, slidably chalk sleeve is set in slideway, ruler slideway lower end home position sets the structure of navigation button, efficiently solve the problem of traditional semi-circle ruler can not make the circle or circular arc of radii fixus, the instrument of circle and circular arc is united two into one, effectively increase the quality and efficiency of mapping.
Description
The technical field present invention is directly related to a kind of teaching aid semi-circle ruler.
Teacher often will be in blackboard upper drawing circle arc, circle, sector, due to traditional in middle school geometry study for background technology
There is no scale on compasses, it is necessary to which, using circle is drawn after ruler measuring radius, semi-circle ruler is when drawing circular arc, sector, and diameter can not change,
Made troubles to teaching, seek a kind of picture circle, circular arc, fan-shaped semi-circle ruler can be facilitated to be very necessary.
Patent of invention content
Present invention aim to provide a kind of teaching aid semi-circle ruler, he effectively can help teacher to use drawing with coloured chalk on blackboard
Circle, circular arc, sector.
The object of the present invention is achieved like this：A kind of teaching aid semi-circle ruler, with semi-circle ruler, semicircle slideway, ruler slideway,
It is uniformly provided with slidably chalk sleeve, navigation button, semi-circle ruler inside radian, semi-circle ruler and semicircle slideway is set, in the semi-circle ruler center of circle
To ruler slideway is set between semicircle slideway, ruler slideway is connected with semicircle slideway, and scale is uniformly provided with ruler slideway, sliding
Slidably chalk sleeve is set in road, and ruler slideway lower end home position sets navigation button.
The present invention is as a result of setting semicircle slideway inside radian, semi-circle ruler is uniformly provided with semi-circle ruler, in semi-circle ruler
The center of circle is to ruler slideway is set between semicircle slideway, ruler slideway is connected with semicircle slideway, and quarter is uniformly provided with ruler slideway
Slidably chalk sleeve is set in degree, slideway, and ruler slideway lower end home position sets the structure of navigation button, circle or circular arc is being drawn
It is that chalk is placed in slidably chalk sleeve, as needed, adjustment slidably position of the chalk sleeve in ruler slideway, and solid
It is fixed, during mapping, semi-circle ruler is fixed on blackboard by the navigation button of ruler slideway lower end home position, can be drawn any straight
The circle in footpath, it is necessary to when drawing circular arc, can interactive chalk sleeve slide into upper end semicircle slideway, the circle of certain radian is drawn as needed
Arc, makees the circular arc of certain radius, certain radian if desired, and the circular arc of certain radian can be first drawn in semicircle slideway, then
Determined by ruler slideway after radius, it is any to draw circle, the end points at circular arc two ends is connected with the center of circle, line is partitioned into lower end circle
Circular arc be exactly required circular arc, the present invention, which efficiently solves traditional semi-circle ruler, can not make the circle or circular arc of radii fixus
Problem, the instrument of circle and circular arc is united two into one, the quality and efficiency of mapping is effectively increased.
Appended drawings 1 are the structural representations of the present invention, and 1 the invention will be further described below in conjunction with the accompanying drawings.
Embodiment accompanying drawing 1 shows a kind of teaching aid semi-circle ruler, is slided with semi-circle ruler 1, semicircle slideway 2, ruler
Radian is uniformly provided with road 3, slidably chalk sleeve 4, navigation button 5, semi-circle ruler 1, the inside of semi-circle ruler 1 sets semicircle slideway 2, half
The circle center of circle of chi 1 is to ruler slideway 3 is set between semicircle slideway 2, ruler slideway 3 is connected with semicircle slideway 2, on ruler slideway 3
It is uniformly provided with scale, slideway and slidably chalk sleeve 4 is set, the lower end home position of ruler slideway 3 sets navigation button 5.
Operation principle：In mapping, chalk is put into slidably chalk sleeve, slidably chalk sleeve exists for adjustment as needed
Position and fixation in ruler slideway, and semi-circle ruler is fixed on blackboard by the navigation button of ruler slideway lower end home position
On, draw the circle of arbitrary diameter；When needing picture circular arc, slidably upper end semicircle slideway will be slid into by chalk sleeve, draw as needed
Go out the circular arc of certain radian, make the circular arc of certain radius, certain radian if desired, first draw certain radian in semicircle slideway
Circular arc, then determined by ruler slideway after radius, it is any to draw circle, the end points at circular arc two ends is connected with the center of circle, line and under
The circular arc that end circle is partitioned into is exactly required sector, and the present invention, which efficiently solves traditional semi-circle ruler, can not make radii fixus
The problem of circle, circular arc, sector, it is one that circle, circular arc, fan-shaped instrument are closed into three, effectively increases the quality and efficiency of mapping.
Claims (1)
1. a kind of teaching aid semi-circle ruler, with semi-circle ruler（1）, semicircle slideway（2）, ruler slideway（3）, slidably chalk sleeve（4）, it is fixed
Position button（5）, it is characterised in that：Semi-circle ruler（1）On be uniformly provided with radian, semi-circle ruler（1）Inside sets semicircle slideway（2）, half
Circle chi（1）The center of circle is to semicircle slideway（2）Between set ruler slideway（3）, ruler slideway（3）With semicircle slideway（2）It is connected, directly
Chi slideway（3）On be uniformly provided with scale, slidably chalk sleeve is set in slideway（4）, ruler slideway（3）Lower end home position is set
Navigation button（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710589572.1A CN107284086A (en) | 2017-07-19 | 2017-07-19 | A kind of teaching aid semi-circle ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710589572.1A CN107284086A (en) | 2017-07-19 | 2017-07-19 | A kind of teaching aid semi-circle ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107284086A true CN107284086A (en) | 2017-10-24 |
Family
ID=60102094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710589572.1A Pending CN107284086A (en) | 2017-07-19 | 2017-07-19 | A kind of teaching aid semi-circle ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107284086A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86207874U (en) * | 1986-10-08 | 1987-09-02 | 夏永群 | Drawing set square |
| CN87215646U (en) * | 1987-11-15 | 1988-06-29 | 杨寿明 | Multi-purpose ruler |
| GB2261853A (en) * | 1991-11-28 | 1993-06-02 | Dominic Vigne Mccannon | Drawing instrument for circles of large and small radius |
| CN2220948Y (en) * | 1994-05-29 | 1996-02-28 | 吕志 | Angle square |
| CN2270633Y (en) * | 1996-07-25 | 1997-12-17 | 朱成考 | Multifunctional drawing instrument |
| CN2411903Y (en) * | 2000-03-29 | 2000-12-27 | 李成思 | Three equally-divided part angle resolver |
| CN101323225A (en) * | 2007-06-13 | 2008-12-17 | 刘宪海 | Multi-function drawing instrument |
| CN201895504U (en) * | 2010-11-29 | 2011-07-13 | 黄志浩 | Multifunction drawing instrument |
| CN205058991U (en) * | 2015-10-19 | 2016-03-02 | 长春职业技术学院（长春市职业技术教育中心长春市财政学校） | Many function combination teaching aid that teaching was used |
| CN205058984U (en) * | 2015-10-22 | 2016-03-02 | 孙雁杰 | Multi -functional mathematics teaching aid of portable |
-
2017
- 2017-07-19 CN CN201710589572.1A patent/CN107284086A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86207874U (en) * | 1986-10-08 | 1987-09-02 | 夏永群 | Drawing set square |
| CN87215646U (en) * | 1987-11-15 | 1988-06-29 | 杨寿明 | Multi-purpose ruler |
| GB2261853A (en) * | 1991-11-28 | 1993-06-02 | Dominic Vigne Mccannon | Drawing instrument for circles of large and small radius |
| CN2220948Y (en) * | 1994-05-29 | 1996-02-28 | 吕志 | Angle square |
| CN2270633Y (en) * | 1996-07-25 | 1997-12-17 | 朱成考 | Multifunctional drawing instrument |
| CN2411903Y (en) * | 2000-03-29 | 2000-12-27 | 李成思 | Three equally-divided part angle resolver |
| CN101323225A (en) * | 2007-06-13 | 2008-12-17 | 刘宪海 | Multi-function drawing instrument |
| CN201895504U (en) * | 2010-11-29 | 2011-07-13 | 黄志浩 | Multifunction drawing instrument |
| CN205058991U (en) * | 2015-10-19 | 2016-03-02 | 长春职业技术学院（长春市职业技术教育中心长春市财政学校） | Many function combination teaching aid that teaching was used |
| CN205058984U (en) * | 2015-10-22 | 2016-03-02 | 孙雁杰 | Multi -functional mathematics teaching aid of portable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171024 |