CN201329742Y - Suction-type compasses - Google Patents
Suction-type compasses Download PDFInfo
- Publication number
- CN201329742Y CN201329742Y CNU2008201715853U CN200820171585U CN201329742Y CN 201329742 Y CN201329742 Y CN 201329742Y CN U2008201715853 U CNU2008201715853 U CN U2008201715853U CN 200820171585 U CN200820171585 U CN 200820171585U CN 201329742 Y CN201329742 Y CN 201329742Y
- Authority
- CN
- China
- Prior art keywords
- ruler
- circle
- slide block
- utility
- model
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to suction-type compasses, which belong to a teaching tool, and comprise a ruler. A lodestone is fixed at one end of the ruler; a slide block is in sleeve joint with the ruler; and an observation hole and chalks are arranged on the slide block. The utility model has the advantages of reasonable structure, novel design and convenient use; when a circle is drawn, the utility model can only be needed to draw the circle without a ruler as an auxiliary tool. The compasses can be taken as a circle-drawing tool, and further taken be a tool for measuring the radius of the circle.
Description
Technical field
The utility model relates to a kind of compasses for teaching, particularly relates to a kind of absorbable type compasses.
Background technology
The educational compasses of prior art generally comprises two mobilizable jibs, one of them jib dress thimble, and another jib dress chalk, but do not have the length scale above the compasses, and often need a ruler as aid during use, use very inconvenient.
Summary of the invention
Technical problem to be solved in the utility model is to overcome existing above-mentioned deficiency in the prior art and new teaching compasses that a kind of reasonable in design is provided.
The technical scheme in the invention for solving the above technical problem is: a kind of absorbable type compasses is characterized in that: comprise ruler, ruler one end is fixed with magnet, is socketed with slide block on the ruler.
Magnet cross section described in the utility model is circular, and its center of circle is on the straight line of described ruler zero graduation line place.
On the slide block described in the utility model chalk is installed.
Have peep hole on the slide block described in the utility model.
The present invention compared with prior art has following beneficial effect: rational in infrastructure, and modern design, easy to use; Draw bowlder, only need the utility model circle that just can independently draw, no longer need a ruler as aid.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Referring to Fig. 1, the utility model comprises ruler 1, magnet 2 and slide block 3.Magnet 2 cross sections are circular, and are fixed on ruler 1 one ends, and its center of circle is on ruler 1 zero graduation line place straight line.Described magnet 2 is fixed on ruler 1 one ends, can be, magnet 2 is bonded in ruler 1 one ends.Slide block 3 is socketed on the ruler 1, has peep hole 5 on it, and effect is a scale of observing ruler 1 and slide block 3 socket places; Slide block 3 also is equipped with chalk 4, and installation method can be bonding or plug-in mounting.
During use, slide block 3 is moved on on the graduation mark corresponding with the radius of circle that will draw, magnet 2 is adsorbed on the blackboard then, rotates ruler 1, and needed circle just can draw.Simultaneously, the utility model also can be used as the instrument of measuring radius of circle, and using method is: magnet 2 centers of circle are overlapped with the round heart of measurement, and slide block 3 moves on the circle contour line, reads that corresponding scale gets final product on the ruler 1.
Claims (4)
1, a kind of absorbable type compasses is characterized in that: comprise ruler, ruler one end is fixed with magnet, is socketed with slide block on the ruler.
2, a kind of absorbable type compasses according to claim 1 is characterized in that: described magnet cross section is for circular, and its center of circle is on the straight line at described ruler zero graduation line place.
3, a kind of absorbable type compasses according to claim 1 is characterized in that: on the described slide block chalk is installed.
4, a kind of absorbable type compasses according to claim 1 is characterized in that: have peep hole on the described slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201715853U CN201329742Y (en) | 2008-12-29 | 2008-12-29 | Suction-type compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201715853U CN201329742Y (en) | 2008-12-29 | 2008-12-29 | Suction-type compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201329742Y true CN201329742Y (en) | 2009-10-21 |
Family
ID=41223117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201715853U Expired - Fee Related CN201329742Y (en) | 2008-12-29 | 2008-12-29 | Suction-type compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201329742Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317907A (en) * | 2013-06-14 | 2013-09-25 | 雷洪炳 | Magnetic compass |
-
2008
- 2008-12-29 CN CNU2008201715853U patent/CN201329742Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317907A (en) * | 2013-06-14 | 2013-09-25 | 雷洪炳 | Magnetic compass |
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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: 20091021 Termination date: 20101229 |