CN202641163U - Disc type compasses - Google Patents
Disc type compasses Download PDFInfo
- Publication number
- CN202641163U CN202641163U CN 201220309594 CN201220309594U CN202641163U CN 202641163 U CN202641163 U CN 202641163U CN 201220309594 CN201220309594 CN 201220309594 CN 201220309594 U CN201220309594 U CN 201220309594U CN 202641163 U CN202641163 U CN 202641163U
- Authority
- CN
- China
- Prior art keywords
- circle
- compasses
- disc type
- hollow out
- radius
- 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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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses disc type compasses, and belongs to stationery. The compasses can effectively solve the problem of inconvenience in drawing a great circle and using a protractor. The disc type compasses structurally comprise a disc with an angle scale. A locating pin is arranged at the center of the disc in a threaded manner, a hollow-out slide is arranged between a circle center and an edge along radius of the circle, and a lineation device is arranged in the hollow-out slide. Scale and figures for limiting the radius of the circle are arranged on one side of the hollow-out slide. The disc type compasses are simple to operate, convenient to use, and suitable for students to use.
Description
Technical field
The utility model relates to a kind of stationery, especially a kind of disc type compasses.
Background technology
In the daily life, in school, compasses are drawing tools that the student often uses.General compasses, its structure generally include compasses head and the supporting leg that is located on the compasses head, are respectively equipped with chalker and pilot pin on two supporting legs.This kind compasses are often not too convenient when drawing great circle, because two supporting legs separate angle astasia when too large.And protractor also often uses, and they are splits, needs in the time of every day use to seek in writing case temporarily, wastes time, and uses inconvenient.
The utility model content
Technical assignment of the present utility model is to provide a kind of disc type compasses for above-mentioned deficiency of the prior art, and these compasses can effectively solve the problem of picture great circle and use amount hornwork inconvenience.
The technical scheme that its technical problem that solves the utility model adopts is: this kind disc type compasses is characterized in that its structure comprises one with the disk of angle measuring calibration; Described disc centre place is provided with pilot pin by screw thread, is provided with a hollow out slideway along radius between the center of circle and edge, is provided with chalker in the hollow out slideway; Described hollow out slideway one side also is provided with scale and the numeral that limits radius of circle.
The utlity model has following outstanding beneficial effect:
1, because its structure comprises one with the disk of angle measuring calibration, so angulation was used when it can be for Students ' Learning.
2, because described disc centre place is provided with pilot pin by screw thread, between the center of circle and edge, be provided with a hollow out slideway along radius, be provided with chalker in the hollow out slideway, so it can draw circle by pilot pin and chalker, and the problem of inconvenience the picture great circle can not occur the time.
3, because described hollow out slideway one side also is provided with scale and the numeral that limits radius of circle, so it can set radius of circle easily, be convenient to draw.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model.
Description of reference numerals: 1 disk, 2 chalkers, 3 hollow out slideways, 4 pilot pins.
The specific embodiment
As shown in Figure 1, this kind disc type compasses, its structure comprises one with the disk 1 of angle measuring calibration; Described disk 1 center is provided with pilot pin 4 by screw thread, and the effect that is bolted is that it can take off pilot pin, so that angulation.Between the center of circle and edge, be provided with a hollow out slideway 3 along radius, hollow out slideway 3 is at the disk border opening, be provided with chalker 2 in the hollow out slideway 3, described chalker 2 is by the disk clamping of draw-in groove and hollow out slideway 3 both sides, described chalker 2 can take out from hollow out slideway 3 opening parts, so that angulation; Described hollow out slideway 3 one sides also are provided with scale and the numeral that limits radius of circle.
During use, draw bowlder, limited radius of a circle by chalker 2 and hollow out slideway 3 on paper with pilot pin 4 is fixing, then pin on the other hand pilot pin 4, one hand-held chalkers 2 and make circular motion and can draw a circle; During angulation, pilot pin 4 and chalker 2 can be taken off, can pass through disk 1 angulation, very convenient.
Claims (1)
1. the disc type compasses is characterized in that, its structure comprises one with the disk of angle measuring calibration; Described disc centre place is provided with pilot pin by screw thread, is provided with a hollow out slideway along radius between the center of circle and edge, is provided with chalker in the hollow out slideway; Described hollow out slideway one side also is provided with scale and the numeral that limits radius of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309594 CN202641163U (en) | 2012-06-28 | 2012-06-28 | Disc type compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309594 CN202641163U (en) | 2012-06-28 | 2012-06-28 | Disc type compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202641163U true CN202641163U (en) | 2013-01-02 |
Family
ID=47410320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220309594 Expired - Fee Related CN202641163U (en) | 2012-06-28 | 2012-06-28 | Disc type compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202641163U (en) |
-
2012
- 2012-06-28 CN CN 201220309594 patent/CN202641163U/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: 20130102 Termination date: 20130628 |