CN201211795Y - Sucking disc compasses - Google Patents
Sucking disc compasses Download PDFInfo
- Publication number
- CN201211795Y CN201211795Y CNU2008200128113U CN200820012811U CN201211795Y CN 201211795 Y CN201211795 Y CN 201211795Y CN U2008200128113 U CNU2008200128113 U CN U2008200128113U CN 200820012811 U CN200820012811 U CN 200820012811U CN 201211795 Y CN201211795 Y CN 201211795Y
- Authority
- CN
- China
- Prior art keywords
- ruler
- sucker
- sucking disc
- circle
- supporting leg
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a sucking disk compass which comprises a fixed leg, a sucking disc, a ruler and a chalk sleeve. The upper riser neck of the sucking disc is inserted at the lower end of the fixed leg; the upper end of the fixed leg is fixedly connected on the ruler; and the chalk sleeve is sleeved on the ruler. The utility model has simple structure and convenient use, and can effectively assist a teacher to draw a circle or other circular charts on a blackboard.
Description
Technical field the utility model relates to a kind of teaching aid, especially a kind of sucker compass.
Two supporting legs of the existing compasses of background technology, paintbrush is installed in the end of one of them supporting leg, the end of another supporting leg is a pointed draw point, be mainly used to the picture circle, this compasses are drawn circle on paper better, if but just not handy at the blackboard upper drawing circle in teaching, its reason is that the pointed draw point on the supporting leg skids on blackboard easily, the center of circle is bad to be determined.
The summary of the invention the purpose of this utility model provides a kind of non-slip at the blackboard upper drawing circle, determines the sucker compass in the center of circle easily.
For achieving the above object, the utility model sucker compass comprises that fixed supporting leg, sucker, ruler and chalk sleeve constitute, and the neck suitable for reading position of sucker is inserted in the lower end of fixed supporting leg, and the upper end of fixed supporting leg is fixed on the ruler, is socketed with chalk sleeve on the ruler.
After adopting said structure, this educational compasses can utilize sucker to be fixed on easily definite center of circle on the blackboard, is convenient for people to the picture circle.
The utility model has the advantages that: simple in structure, easy to use, can help the teacher at blackboard upper drawing circle and other circular patterns effectively.
Description of drawings Fig. 1 is the utility model sucker compass overall structure schematic diagram.
The specific embodiment such as Fig. 1 show, the utility model sucker compass comprises that fixed supporting leg 1, sucker 2, ruler 3 and chalk sleeve 4 constitute, and the neck suitable for reading position of sucker 2 is inserted in the lower end of fixed supporting leg 1, the upper end of fixed supporting leg 1 is fixed on the ruler 3, is socketed with chalk sleeve 4 on the ruler 3.This educational compasses can utilize sucker to be fixed on easily definite center of circle on the blackboard, is convenient for people to the picture circle.
Claims (1)
1, a kind of sucker compass, comprise that fixed supporting leg (1), sucker (2), ruler (3) and chalk sleeve (4) constitute, it is characterized in that: the neck suitable for reading position of sucker (2) is inserted in the lower end of fixed supporting leg (1), the upper end of fixed supporting leg (1) is fixed on the ruler (3), is socketed with chalk sleeve (4) on the ruler (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200128113U CN201211795Y (en) | 2008-05-20 | 2008-05-20 | Sucking disc compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200128113U CN201211795Y (en) | 2008-05-20 | 2008-05-20 | Sucking disc compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201211795Y true CN201211795Y (en) | 2009-03-25 |
Family
ID=40495955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200128113U Expired - Fee Related CN201211795Y (en) | 2008-05-20 | 2008-05-20 | Sucking disc compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201211795Y (en) |
-
2008
- 2008-05-20 CN CNU2008200128113U patent/CN201211795Y/en not_active Expired - Fee Related
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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: 20090325 |