CN201970718U - Radius-adjustable magnetic circle tool - Google Patents
Radius-adjustable magnetic circle tool Download PDFInfo
- Publication number
- CN201970718U CN201970718U CN2011200394344U CN201120039434U CN201970718U CN 201970718 U CN201970718 U CN 201970718U CN 2011200394344 U CN2011200394344 U CN 2011200394344U CN 201120039434 U CN201120039434 U CN 201120039434U CN 201970718 U CN201970718 U CN 201970718U
- Authority
- CN
- China
- Prior art keywords
- radius
- cyclograph
- circle
- circle tool
- tool body
- 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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Abstract
The utility model relates to a radius-adjustable magnetic circle tool, which comprises a circle tool body. A rotating shaft is arranged at one end of the circle tool body, a magnet is connected to the rotating shaft, the circle tool body is provided with a through hole and graduation marks, a radius adjusting portion penetrates through the circle tool body, and a portion of the radius adjusting portion above the circle tool body is provided with a reading hole and a chalk fixing hole. Therefore, when the radius-adjustable magnetic circle tool is used for describing a circle, the radius adjusting portion is slid left and right along the graduation mark direction of the circle tool body according to the radius to a circle to be described, the circle tool is fixed to a chalkboard through the magnet after a chalk is put into the chalk fixing hole, the circle tool body is rotated through the rotating shaft, and a circle of the corresponding radius is described through the chalk in the chalk fixing hole.
Description
Technical field
The utility model relates to a kind of cyclograph, relates in particular to a kind of magnetic-type cyclograph of regulating radius.
Background technology
The teacher generally uses compasses when the blackboard upper drawing circle, because the surperficial smoother of blackboard is easy in the process of drawing circle, make compasses landing from the blackboard, and the circle of drawing different radii to need to regulate the radius of compasses cumbersome.
The utility model content
The utility model is in the process of drawing circle, compasses landing from the blackboard easily, and draw the cumbersome deficiency of radius that the circle of different radii needs to regulate compasses, a kind of magnetic-type cyclograph of regulating radius is provided.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of magnetic-type cyclograph of regulating radius comprises the cyclograph body, one end of described cyclograph body is provided with rotating shaft, be connected with magnet in the described rotating shaft, have through hole and scale value on the described cyclograph body, be equipped with the radius adjusting portion on the described cyclograph body, described radius regulator site has reading hole and chalk fixing hole in the part of cyclograph body top.
The beneficial effects of the utility model are: the magnetic-type cyclograph that uses the utility model can regulate radius is drawn bowlder, according to drawing the radius of a circle size, the radius adjusting portion is made move left and right along the direction of cyclograph body scale value, chalk is put in the chalk fixing hole again, by magnet cyclograph is fixed on the blackboard, and by rotating shaft rotation cyclograph body, can draw by the chalk in the chalk fixing hole has the circle of relevant radii.
Description of drawings
Fig. 1 can regulate the front view of the magnetic-type cyclograph of radius for the utility model;
Fig. 2 can regulate the vertical view of the magnetic-type cyclograph of radius for the utility model.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used to explain the utility model, is not to be used to limit scope of the present utility model.
Fig. 1 can regulate the front view of the magnetic-type cyclograph of radius for the utility model, and Fig. 2 can regulate the vertical view of the magnetic-type cyclograph of radius for the utility model.Shown in Fig. 1 and 2, the described magnetic-type cyclograph of regulating radius comprises cyclograph body 1, one end of described cyclograph body 1 is provided with rotating shaft 2, be connected with magnet 3 in the described rotating shaft 2, have through hole 8 and scale value 5 on the described cyclograph body 1, be equipped with radius adjusting portion 4 on the described cyclograph body 1, the part that described radius adjusting portion 4 is positioned at cyclograph body 1 top has reading hole 6 and chalk fixing hole 7.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (1)
1. the magnetic-type cyclograph that can regulate radius, it is characterized in that, comprise the cyclograph body, one end of described cyclograph body is provided with rotating shaft, be connected with magnet in the described rotating shaft, have through hole and scale value on the described cyclograph body, be equipped with the radius adjusting portion on the described cyclograph body, described radius regulator site has reading hole and chalk fixing hole in the part of cyclograph body top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200394344U CN201970718U (en) | 2011-02-11 | 2011-02-11 | Radius-adjustable magnetic circle tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200394344U CN201970718U (en) | 2011-02-11 | 2011-02-11 | Radius-adjustable magnetic circle tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201970718U true CN201970718U (en) | 2011-09-14 |
Family
ID=44575823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200394344U Expired - Fee Related CN201970718U (en) | 2011-02-11 | 2011-02-11 | Radius-adjustable magnetic circle tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201970718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944192A (en) * | 2017-05-22 | 2018-12-07 | 孟庆涛 | A kind of concentric circles ruler |
-
2011
- 2011-02-11 CN CN2011200394344U patent/CN201970718U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944192A (en) * | 2017-05-22 | 2018-12-07 | 孟庆涛 | A kind of concentric circles ruler |
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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: 20110914 Termination date: 20120211 |