CN204236096U - Drawing Ellipse teaching aid - Google Patents
Drawing Ellipse teaching aid Download PDFInfo
- Publication number
- CN204236096U CN204236096U CN201420632743.6U CN201420632743U CN204236096U CN 204236096 U CN204236096 U CN 204236096U CN 201420632743 U CN201420632743 U CN 201420632743U CN 204236096 U CN204236096 U CN 204236096U
- Authority
- CN
- China
- Prior art keywords
- teaching aid
- positioning rule
- slideway
- fixed
- ellipse
- 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 discloses a kind of Drawing Ellipse teaching aid, relate to teaching aid technical field, especially a kind of teaching aid drawing ellipse.It comprises positioning rule, and the both sides, lower surface of positioning rule are respectively fixed with a sucker; In the longitudinal direction, the middle part of positioning rule has slideway; Two slide blocks are sliding combined with in slideway; The upper end of each slide block is all provided with a fixed pulley.The beneficial effects of the utility model are easy to use, the ellipse rule drawn, and can set the distance of two focuses, improve quality of instruction and efficiency.
Description
Technical field
The utility model relates to teaching aid technical field, especially a kind of teaching aid drawing ellipse.
Background technology
In the several teaching process of junior high school, teacher draws ellipse often through the experience of self on clipboard, the elliptical orbit irregularity drawn, rough, and it is comparatively complicated, not easy to operate to draw the oval teaching aid needed by define method.
Utility model content
Technical problem to be solved in the utility model is the technical deficiency for above-mentioned existence, provides a kind of Drawing Ellipse teaching aid, easy to use, the ellipse rule drawn, and can set the distance of two focuses, improves quality of instruction and efficiency.
The technical solution adopted in the utility model is: provide a kind of Drawing Ellipse teaching aid, comprise positioning rule, and the both sides, lower surface of positioning rule are respectively fixed with a sucker; In the longitudinal direction, the middle part of positioning rule has slideway; Two slide blocks are sliding combined with in slideway; The upper end of each slide block is all provided with a fixed pulley.
Further optimization the technical program, Drawing Ellipse teaching aid, in the lower surface of positioning rule, is provided with magnetic stripe between two suckers; The lower surface of magnetic stripe and positioning rule is fixed.
Further optimization the technical program, the outside at slideway of Drawing Ellipse teaching aid, each slide block is all fixed with pointer; The outer ledge of slideway is evenly distributed with graduation mark.
To draw the oval teaching aid used different from tradition, and the beneficial effects of the utility model are:
1, the axle center of two fixed pulleys is oval two focuses, the distance of two fixed pulleys in positioning rule can adjust, so just change oval shape, during operation, adopt and survey rope of looking, the two ends of rope are enclosed within a fixed pulley respectively, then use chalk to prop up rope and can draw ellipse around two fixed pulleys.
2, can positioning rule be fixed on clipboard by sucker and magnet, fixing reliable, easy disassembly.
3, spacing between two fixed pulleys can be obtained by graduation mark, need not in use ruler tolerance, easy to operate, data are accurate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is Fig. 1 upward view.
In figure, 1, positioning rule; 2, sucker; 3, slideway; 4, slide block; 5, fixed pulley; 6, magnet; 7, pointer; 8, graduation mark.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1-2, a kind of Drawing Ellipse teaching aid, comprises positioning rule 1, and the both sides, lower surface of positioning rule 1 are respectively fixed with a sucker 2; In the longitudinal direction, the middle part of positioning rule 1 has slideway 3; Two slide blocks 4 are sliding combined with in slideway 3; The upper end of each slide block 4 is all provided with a fixed pulley 5; In the lower surface of positioning rule 1, between two suckers 2, be provided with magnetic stripe 6; Magnetic stripe 6 is fixed with the lower surface of positioning rule 1; In the outside of slideway 3, each slide block 4 is all fixed with pointer 7; The outer ledge of slideway 3 is evenly distributed with graduation mark 8.
During use, positioning rule 1 is pressed to clipboard face, positioning rule 1 is connected with clipboard face by sucker 2, and on market, the plate face degree of roughness of some clipboards is comparatively large, likely makes sucker 2 ineffective.But the rear portion, plate face of most of clipboard, is provided with irony stereotype plate on market, so positioning rule 1 can also be connected with clipboard face by magnet 6.
After positioning rule 1 fixes, two focuses in the elliptic parameter 2 c(plane listed) and 2 a(planes in the distance sum of some arrival two focuses).Regulate the position of two fixed pulleys 5, make both distances be 2a; Measure one section of rope, the two ends of rope are socketed on two fixed pulleys 5 respectively, and make the length of rope equal 2a.
Finally, chalk is propped up rope, then rotate around two fixed pulleys 5, the ellipse of relevant parameter can be obtained.
Claims (3)
1. a Drawing Ellipse teaching aid, is characterized in that: comprise positioning rule (1), and the both sides, lower surface of positioning rule (1) are respectively fixed with a sucker (2); In the longitudinal direction, the middle part of positioning rule (1) has slideway (3); Two slide blocks (4) are sliding combined with in slideway (3); The upper end of each slide block (4) is all provided with a fixed pulley (5).
2. Drawing Ellipse teaching aid according to claim 1, is characterized in that: in the lower surface of positioning rule (1), is provided with magnetic stripe (6) between two suckers (2); Magnetic stripe (6) is fixed with the lower surface of positioning rule (1).
3. Drawing Ellipse teaching aid according to claim 1, is characterized in that: in the outside of slideway (3), each slide block (4) is all fixed with pointer (7); The outer ledge of slideway (3) is evenly distributed with graduation mark (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632743.6U CN204236096U (en) | 2014-10-29 | 2014-10-29 | Drawing Ellipse teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632743.6U CN204236096U (en) | 2014-10-29 | 2014-10-29 | Drawing Ellipse teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204236096U true CN204236096U (en) | 2015-04-01 |
Family
ID=52765643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420632743.6U Expired - Fee Related CN204236096U (en) | 2014-10-29 | 2014-10-29 | Drawing Ellipse teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204236096U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110654146A (en) * | 2019-09-29 | 2020-01-07 | 黑龙江科技大学 | A multi-functional teaching aid for mathematical education usefulness |
-
2014
- 2014-10-29 CN CN201420632743.6U patent/CN204236096U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110654146A (en) * | 2019-09-29 | 2020-01-07 | 黑龙江科技大学 | A multi-functional teaching aid for mathematical education usefulness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20171029 |