CN204309471U - A kind of educational compasses - Google Patents
A kind of educational compasses Download PDFInfo
- Publication number
- CN204309471U CN204309471U CN201420793714.8U CN201420793714U CN204309471U CN 204309471 U CN204309471 U CN 204309471U CN 201420793714 U CN201420793714 U CN 201420793714U CN 204309471 U CN204309471 U CN 204309471U
- Authority
- CN
- China
- Prior art keywords
- regulation foot
- foot
- arc connector
- regulation
- stud
- 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
Abstract
The utility model relates to teaching equipment field, especially a kind of educational compasses; Comprise the hinged fixing regulation foot in top and rotate regulation foot, rotating regulation foot lower end and be provided with pen clip; Fixed gauge foot bottom is provided with ball cup, has bulb suitable with it in ball cup, and ball rod bulb extended outside ball head nest is connected with sucker; This educational compasses is also provided with arc connector, stud and bolt; Circular hole on arc connector matches with the through hole rotated in regulation foot, and is connected with bolt by stud; The utility model in use, thoroughly solves the problem of angle change between two regulation foots when drawing circle with a compass circle, easy to use, decreases the picture time in classroom, improves teaching efficiency.
Description
Technical field
The utility model relates to teaching equipment field, especially a kind of educational compasses.
Background technology
Often can teaching of use compasses in school mathematics teaching.At present, educational compasses makes moderate progress; When circle is larger, because compasses size also wants large, rotates the Shi Burang that draws a circle and become, and due to the damping between compasses two regulation foots large not, its angle easily changes, and making to do radius of graph can change; Also still there is this kind of problem in the educational compasses after improvement.
Summary of the invention
In order to solve the deficiencies in the prior art, the utility model provides a kind of easy to use, can not change the educational compasses of angle between two supporting legs.
The utility model solves the technical scheme that its technical problem adopts, a kind of educational compasses, comprises the hinged fixing regulation foot in top and rotates regulation foot, rotates regulation foot lower end and is provided with pen clip;
Fixed gauge foot bottom is provided with ball cup, has bulb suitable with it in ball cup, and ball rod bulb extended outside ball head nest is connected with sucker;
This educational compasses is also provided with arc connector, stud and bolt;
Arc connector is provided with some circular holes, arc connector one end is fixedly connected in fixing regulation foot;
Rotate regulation foot top and offer through hole; Circular hole on arc connector matches with the through hole rotated in regulation foot, and is connected with bolt by stud.
The center of circle on arc connector is consistent with the center of the pin joint rotating regulation foot with fixing regulation foot;
the beneficial effects of the utility model are, a kind of educational compasses is arranged, in use, the problem of angle change between two regulation foots when thorough solution draws circle with a compass circle, time especially larger for circle, decreases the picture time in classroom, easy to use, improve teaching efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the utility model bolt stud schematic diagram.
In figure, 1. fixing regulation foots, 2. rotate regulation foot, 3. ball cup, 4. bulb, 5. ball rod, 6. sucker, 7. pen clip, 8. arc connector, 9. circular hole, 10. stud, 11. bolts.
Detailed description of the invention
With reference to accompanying drawing, a kind of educational compasses, comprise the hinged fixing regulation foot in top 1 and rotate regulation foot 2, rotating regulation foot 2 lower end and be provided with pen clip 7;
Be provided with ball cup 3 bottom fixing regulation foot 1, have bulb 4 suitable with it in ball cup 3, the ball rod 5 bulb 4 extended outside ball head nest is connected with sucker 6;
This educational compasses is also provided with arc connector 8, stud 10 and bolt 11;
Arc connector 8 is provided with some circular holes 9, arc connector one end is fixedly connected in fixing regulation foot 1;
Rotate regulation foot 2 top and offer through hole; Circular hole 9 on arc connector 8 matches with the through hole rotated in regulation foot 2, and is connected with bolt 11 by stud 10.
The center of circle on arc connector 8 is consistent with the center of the pin joint rotating regulation foot 2 with fixing regulation foot 1.
Claims (2)
1. an educational compasses, comprises the hinged fixing regulation foot in top and rotates regulation foot, rotates regulation foot lower end and is provided with pen clip;
Fixed gauge foot bottom is provided with ball cup, has bulb suitable with it in ball cup, and ball rod bulb extended outside ball head nest is connected with sucker; It is characterized in that, this educational compasses is also provided with arc connector, stud and bolt;
Arc connector is provided with some circular holes, arc connector one end is fixedly connected in fixing regulation foot;
Rotate regulation foot top and offer through hole;
Circular hole on arc connector matches with the through hole rotated in regulation foot, and is connected with bolt by stud.
2. educational compasses according to claim 1, is characterized in that, the center of circle on arc connector is consistent with the center of the pin joint rotating regulation foot with fixing regulation foot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420793714.8U CN204309471U (en) | 2014-12-16 | 2014-12-16 | A kind of educational compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420793714.8U CN204309471U (en) | 2014-12-16 | 2014-12-16 | A kind of educational compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204309471U true CN204309471U (en) | 2015-05-06 |
Family
ID=53131801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420793714.8U Expired - Fee Related CN204309471U (en) | 2014-12-16 | 2014-12-16 | A kind of educational compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204309471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106183559A (en) * | 2016-09-27 | 2016-12-07 | 泉州惠安泉创文化用品有限公司 | A kind of compasses with angular surveying |
-
2014
- 2014-12-16 CN CN201420793714.8U patent/CN204309471U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106183559A (en) * | 2016-09-27 | 2016-12-07 | 泉州惠安泉创文化用品有限公司 | A kind of compasses with angular surveying |
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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: 20150506 Termination date: 20151216 |
|
| EXPY | Termination of patent right or utility model |