CN204322845U - A kind of conic section drawing tool - Google Patents
A kind of conic section drawing tool Download PDFInfo
- Publication number
- CN204322845U CN204322845U CN201420718100.3U CN201420718100U CN204322845U CN 204322845 U CN204322845 U CN 204322845U CN 201420718100 U CN201420718100 U CN 201420718100U CN 204322845 U CN204322845 U CN 204322845U
- Authority
- CN
- China
- Prior art keywords
- axle sleeve
- conic section
- mobile axle
- drawing tool
- section drawing
- 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
Links
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a kind of conic section drawing tool, comprise ruler body and mobile axle sleeve, described ruler body stage casing has vertically disposed two thin bars, thin bar is inserted in mobile axle sleeve, mobile axle sleeve moves along thin bar, and ruler body interior is provided with two moveable holders, is also provided with two moveable holders in mobile axle sleeve, holder is fixed at the two ends of cord, and passes the attaching lug of chalk frame.Conic section drawing tool of the present utility model can allow student experience the feature of conic section more intuitively, makes the figure more standard of working it out, and facilitates teacher's mapping, can make the curve map of standard very rapidly.Structure is simple, is easy to processing, practical simplicity.
Description
Technical field
The utility model relates to teaching tools field, specifically a kind of conic section drawing tool.
Background technology
Conic section drawing tool common configuration common above market is complicated, and complicated operation, a people has been difficult to mapping, intuitively can not reflect mapping principle.Conic section drawing tool needs the technique of painting requirement simultaneously meeting three kinds of figure lines; Needing during mapping can according to the data point reuse mapping size of oneself; Parabola only has a focus to maintain static; Hyperbola, parabola can infinitely extend; The oval distance sum to bifocal is constant.
Utility model content
In order to solve the above-mentioned technical problem existed in prior art, the utility model provides a kind of conic section drawing tool, comprise ruler body and mobile axle sleeve, described ruler body stage casing has vertically disposed two thin bars, and thin bar is inserted in mobile axle sleeve, and mobile axle sleeve moves along thin bar, ruler body interior is provided with two moveable holders, also be provided with two moveable holders in mobile axle sleeve, holder is fixed at the two ends of cord, and passes the attaching lug of chalk frame.
Further, described mobile axle sleeve is by manual certain position being fixed on thin bar of screw.
Further, chalk is fixed on chalk frame.
Conic section drawing tool of the present utility model can allow student experience the feature of conic section more intuitively, makes the figure more standard of working it out, and facilitates teacher's mapping, can make the curve map of standard very rapidly.Structure is simple, is easy to processing, practical simplicity.
Accompanying drawing explanation
Fig. 1 is conic section drawing tool structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, conic section drawing tool of the present utility model, comprise ruler body 1 and mobile axle sleeve 2, ruler body 1 stage casing has vertically disposed two thin bars 3, and thin bar 3 is inserted in mobile axle sleeve 2, and mobile axle sleeve 2 can move along thin bar 3, ruler body 1 inside is provided with two moveable holders 4, also be provided with two moveable holders 4 in mobile axle sleeve 2, holder 4 is fixed at the two ends of cord 5, and passes the attaching lug 8 of chalk frame 6.Mobile axle sleeve 2 is by manual certain position being fixed on thin bar 3 of screw 7.Chalk is fixed on chalk frame 6.
When conic section drawing tool of the present utility model uses, cord 5 has pliability, and some when can meet mapping on curve is constantly changed to the distance of focus; Can change the insertion degree of thin bar 3 during apparatus for drawing parabolic line to control focal length, screw 7 can play fixation; Ruler body 1 is marked with size, so that draw conic section adjusting focal length; Holder 4 is for one end of fixed-focus and static line; Chalk frame 6 for fixing chalk, cord 5 through attaching lug 8, as on conic section a bit; Holder 4 is arranged on the straight line at focus place, is also the moveable bar of focus.
Claims (3)
1. a conic section drawing tool, comprise ruler body (1) and mobile axle sleeve (2), it is characterized in that: described ruler body (1) stage casing has vertically disposed two thin bars (3), thin bar (3) is inserted in mobile axle sleeve (2), mobile axle sleeve (2) is mobile along thin bar (3), ruler body (1) inside is provided with two moveable holders (4), also two moveable holders (4) are provided with in mobile axle sleeve (2), holder (4) is fixed at the two ends of cord (5), and passes the attaching lug (8) of chalk frame (6).
2. conic section drawing tool as claimed in claim 1, is characterized in that: described mobile axle sleeve (2) is by manual certain position being fixed on thin bar (3) of screw (7).
3. conic section drawing tool as claimed in claim 1, is characterized in that: chalk is fixed on chalk frame (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420718100.3U CN204322845U (en) | 2014-11-26 | 2014-11-26 | A kind of conic section drawing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420718100.3U CN204322845U (en) | 2014-11-26 | 2014-11-26 | A kind of conic section drawing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204322845U true CN204322845U (en) | 2015-05-13 |
Family
ID=53159238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420718100.3U Expired - Fee Related CN204322845U (en) | 2014-11-26 | 2014-11-26 | A kind of conic section drawing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204322845U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401155A (en) * | 2014-11-26 | 2015-03-11 | 浙江海洋学院 | Conic curve drawing tool |
| CN105774329A (en) * | 2016-03-22 | 2016-07-20 | 朱瑞泰 | Conical curve gauge |
-
2014
- 2014-11-26 CN CN201420718100.3U patent/CN204322845U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401155A (en) * | 2014-11-26 | 2015-03-11 | 浙江海洋学院 | Conic curve drawing tool |
| CN105774329A (en) * | 2016-03-22 | 2016-07-20 | 朱瑞泰 | Conical curve gauge |
| CN105774329B (en) * | 2016-03-22 | 2018-01-09 | 朱瑞泰 | Conic-section plotter |
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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 |
Granted publication date: 20150513 Termination date: 20151126 |