CN202337139U - Simple tool for drawing ellipses - Google Patents
Simple tool for drawing ellipses Download PDFInfo
- Publication number
- CN202337139U CN202337139U CN2011204159146U CN201120415914U CN202337139U CN 202337139 U CN202337139 U CN 202337139U CN 2011204159146 U CN2011204159146 U CN 2011204159146U CN 201120415914 U CN201120415914 U CN 201120415914U CN 202337139 U CN202337139 U CN 202337139U
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- CN
- China
- Prior art keywords
- stator
- ellipse
- static line
- focus
- fixing
- 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
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Abstract
The utility model relates to a simple tool for drawing ellipses. The simple tool comprises a measuring ruler, a pair of focus fixing sheets, a movable ring and a fixing rope, wherein the pair of focus fixing sheets is arranged at two ends of the measuring ruler and freely slide on the measuring ruler, the pair of focus fixing sheets respectively corresponds to focuses of an ellipse, the movable ring is sheathed on the fixing rope and freely slides on the fixing rope, one end of the fixing rope is fixedly connected with one focus fixing sheet, and the other end of the fixing rope is movably connected with the other focus fixing sheet. The simple tool for drawing ellipses can be used for easily drawing the ellipse according to known conditions and the properties of the ellipse and helps teacher to precisely solve problems, and students can also know various properties of the ellipse. The simple tool for drawing the ellipses has the advantages that the cost is low, the size is small, the weight is light, the structure is simple, the carrying is convenient, and the implementation is easy.
Description
Technical field
The utility model relates to a kind of drawing instrument, relates in particular to a kind of oval light instrument of picture of convenient teaching.
Background technology
At present; In the mathematical education of junior middle school, senior middle school, relate to geometric figures such as circle, ellipse through regular meeting, teacher on blackboard with the compasses circle that can draw very easily; And can know other attributes of radius of a circle and circle; But the oval drawing tools that does not just have special use, it is oval nonstandard that teacher draws, and has influence on the answer of exercise question sometimes.
The utility model content
The purpose of the utility model provides a kind of oval light instrument of drawing, and uses it to draw easily and meets exercise question required standard ellipse.
To achieve these goals, the technical scheme of the utility model is:
A kind of light instrument of drawing ellipse comprises tolerance chi, a focusing stator, active ring and static line; A described focusing stator is arranged on the two ends of tolerance chi; A described focusing stator is free to slide on the tolerance chi; The position of a described focusing stator is the position of corresponding elliptic focus respectively, and described active ring is nested with on static line, and described active ring is free to slide on static line; One end of described static line is fixedly connected with a slice focus stator, and the other end of described static line and another focus stator flexibly connect.
The light instrument that above-mentioned picture is oval wherein, is respectively equipped with magnet on the described focusing stator, and described tolerance chi, a focusing stator, active ring and static line are fixed on the magnet board through described magnet.
The utility model is owing to adopted above-mentioned technology, and the good effect that makes it compared with prior art to have is:
1, the utility model is drawn oval light instrument and can helped teacher to solve a problem more accurately according to the character of ellipse and the known conditions ellipse that easily draws, and also can make the student more understand oval various attributes.
2, the light instrument cost of the utility model picture ellipse is low, and volume is little, and is in light weight, simple in structure, is convenient for carrying, easy to implement.
Description of drawings
Fig. 1 is the structural representation that the utility model is drawn oval light instrument.
The specific embodiment
Further specify the embodiment of the utility model below in conjunction with accompanying drawing.
See also shown in the accompanying drawing 1, a kind ofly draw oval light instrument, comprise tolerance chi 1, a focusing stator 2, active ring 3 and static line 4; One focusing stator 2 is arranged on the two ends of tolerance chi 1; One focusing stator 2 can be free to slide on tolerance chi 1, and the position of respectively corresponding oval 2 focuses in the position of a focusing stator 2 is so that require to regulate the distance between the oval bifocal according to exercise question; Active ring 3 is nested with on static line 4; Active ring 3 is free to slide on static line 4, and an end of static line 4 is fixedly connected with a slice focus stator 2, and the other end of static line 4 and another focus stator 2 flexibly connect.
Be respectively equipped with magnet 21 on the one focusing stator 2, tolerance chi 1, a focusing stator 2, active ring 3 and static line 4 are fixed on the magnet board through magnet 21.
During use; Only need know any 1 in oval focal length and the parameters such as major axis, minor axis or semiaxis and get final product that a focusing stator 2 is arranged on the two ends of measuring chi 1, and the spacing distance between the focusing stator 2 is made as focal length; Definition according to ellipse: ellipse be on the plane to two fixed points apart from the track of sum for the point of normal value; Regulate the length of static line 4, and be fixed on the focus stator 2, with chalk sleeve in active ring 3; Exceptionally straight static line 4 is along the track of static line 4 oval the getting final product of drawing.
The utility model is drawn oval light instrument and can helped teacher to solve a problem more accurately according to the character of ellipse and the known conditions ellipse that easily draws, and also can make the student more understand the various attributes of ellipse; The utility model cost is low, and volume is little, and is in light weight, simple in structure, is convenient for carrying, easy to implement.
Claims (2)
1. draw oval light instrument for one kind, it is characterized in that: comprise tolerance chi, a focusing stator, active ring and static line; A described focusing stator is arranged on the two ends of tolerance chi; A described focusing stator is free to slide on the tolerance chi; The position of a described focusing stator is the position of corresponding elliptic focus respectively, and described active ring is nested with on static line, and described active ring is free to slide on static line; One end of described static line is fixedly connected with a slice focus stator, and the other end of described static line and another focus stator flexibly connect.
2. the light instrument of drawing ellipse according to claim 1; It is characterized in that: be respectively equipped with magnet on the described focusing stator, described tolerance chi, a focusing stator, active ring and static line are fixed on the magnet board through described magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204159146U CN202337139U (en) | 2011-10-27 | 2011-10-27 | Simple tool for drawing ellipses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204159146U CN202337139U (en) | 2011-10-27 | 2011-10-27 | Simple tool for drawing ellipses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202337139U true CN202337139U (en) | 2012-07-18 |
Family
ID=46485842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204159146U Expired - Fee Related CN202337139U (en) | 2011-10-27 | 2011-10-27 | Simple tool for drawing ellipses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202337139U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522803A (en) * | 2013-10-24 | 2014-01-22 | 苏州市职业大学 | Ellipsograph |
| CN107738529A (en) * | 2017-10-19 | 2018-02-27 | 西京学院 | A kind of compasses and its application method for being used to draw ellipse |
-
2011
- 2011-10-27 CN CN2011204159146U patent/CN202337139U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522803A (en) * | 2013-10-24 | 2014-01-22 | 苏州市职业大学 | Ellipsograph |
| CN107738529A (en) * | 2017-10-19 | 2018-02-27 | 西京学院 | A kind of compasses and its application method for being used to draw ellipse |
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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: 20120718 Termination date: 20121027 |