CN2878087Y - Center of circle positioning device - Google Patents
Center of circle positioning device Download PDFInfo
- Publication number
- CN2878087Y CN2878087Y CN 200620089442 CN200620089442U CN2878087Y CN 2878087 Y CN2878087 Y CN 2878087Y CN 200620089442 CN200620089442 CN 200620089442 CN 200620089442 U CN200620089442 U CN 200620089442U CN 2878087 Y CN2878087 Y CN 2878087Y
- Authority
- CN
- China
- Prior art keywords
- rectangular slab
- rectangle board
- circle
- center
- broad
- 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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- Portable Nailing Machines And Staplers (AREA)
Abstract
The utility model relates to a circle center locating device, which is characterized in that the circle center locating device comprises a broad rectangle board and a long rectangle board, wherein the broad rectangle board is provided with a V-shaped groove which forms an isosceles triangle. The long rectangle board is glued on the broad rectangle board, and further the upper edge and lower edge serve respectively as the top angle bisector for the V-shaped groove of the broad rectangle board and the parallel line for the lower line of the long rectangle board. Compared with the prior art, the utility model has the advantage of easy in structure, convenient in use and accurate in positioning, which is capable of locating the circle center swiftly to assist students and teachers to finish the teaching task conveniently.
Description
Technical field
The utility model relates to a kind of schooling apparatus, particularly relates to a kind of center of circle positioner, belongs to the school supply and stationery category, and suitable student and teacher use in teaching.
Background technology
In daily life, often run into the home position that will determine known circle, conventional method is to find out diameter of a circle earlier, utilize diameter of a circle to make two diameters again, make its joining be home position through the rule in the center of circle, this method needs to calculate, and spended time is longer.
The utility model content
The purpose of this utility model is to overcome the prior art above shortcomings, improve by research, provide a kind of center of circle positioner, this center of circle positioner can be determined the home position of known circle rapidly, characteristics with simple in structure, easy to use and accurate positioning help student and teacher to finish teaching task quickly.
The technical scheme that the utility model provides is: this center of circle positioner, be characterized in that described center of circle positioner is made of a wide rectangular slab and a block length rectangular slab, wherein have a V font groove on wide rectangular slab side, two waists of this V font groove equate, long rectangular slab binds on wide rectangular slab, the top of long rectangular slab is as the drift angle bisector of V font groove on the wide rectangular slab, and the bottom of long rectangular slab is following parallel with wide rectangular slab.
Compared with prior art, the beneficial effects of the utility model are: have the characteristics of simple in structure, easy to use and accurate positioning, can determine the home position of known circle rapidly, help student and teacher to finish teaching task quickly.
Description of drawings
Accompanying drawing is the user mode schematic diagram of the embodiment that provides of the utility model.
The specific embodiment
As shown in the figure, this center of circle positioner, constitute by a wide rectangular slab 1 and a block length rectangular slab 2, have a V font groove 3 on the side of wherein wide rectangular slab 1, two waists of this V font groove 3 equate, long rectangular slab 2 binds on wide rectangular slab 1, and the top of long rectangular slab 2 is as drift angle 4 bisectors of V font groove 3 on the wide rectangular slab 1, and the bottom of long rectangular slab 2 is following parallel with wide rectangular slab 1.
During use, the circle that survey is placed on the V font groove card angle 5 in the wide rectangular slab 1, utilizes the top of long rectangular slab 2 to do straight line on circle, again measured circle is rotated another angle, draw straight line once more, such two lines meet at a bit, and this point is the center of circle so.If measure the circle of big specification, the V font groove Ka Jiao in the wide rectangular slab 1 infinitely can be extended to and to hold great circle.
Claims (1)
1. center of circle positioner, it is characterized in that described center of circle positioner is made of a wide rectangular slab and a block length rectangular slab, wherein have a V font groove on wide rectangular slab side, two waists of this V font groove equate, long rectangular slab binds on wide rectangular slab, the top of long rectangular slab is as the drift angle bisector of V font groove on the wide rectangular slab, and the bottom of long rectangular slab is following parallel with wide rectangular slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089442 CN2878087Y (en) | 2006-03-01 | 2006-03-01 | Center of circle positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089442 CN2878087Y (en) | 2006-03-01 | 2006-03-01 | Center of circle positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2878087Y true CN2878087Y (en) | 2007-03-14 |
Family
ID=37860501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620089442 Expired - Fee Related CN2878087Y (en) | 2006-03-01 | 2006-03-01 | Center of circle positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2878087Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354530A (en) * | 2020-05-01 | 2020-06-30 | 东莞质研工业设计服务有限公司 | Automatic motor rotor magnetizing equipment capable of being positioned at center |
-
2006
- 2006-03-01 CN CN 200620089442 patent/CN2878087Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354530A (en) * | 2020-05-01 | 2020-06-30 | 东莞质研工业设计服务有限公司 | Automatic motor rotor magnetizing equipment capable of being positioned at center |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |