CN202319547U - Bow compasses - Google Patents
Bow compasses Download PDFInfo
- Publication number
- CN202319547U CN202319547U CN2011204832460U CN201120483246U CN202319547U CN 202319547 U CN202319547 U CN 202319547U CN 2011204832460 U CN2011204832460 U CN 2011204832460U CN 201120483246 U CN201120483246 U CN 201120483246U CN 202319547 U CN202319547 U CN 202319547U
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- CN
- China
- Prior art keywords
- supporting leg
- hinged
- connector
- telescopic outrigger
- telescopic supporting
- 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 provides a pair of bow compasses, and belongs to the field of a teaching aid. The pair of bow compasses comprises a rotating handle, a connector and supporting legs, wherein the rotating handle is arranged at the upper end of the connector; the supporting legs are arranged on the connector; the supporting legs adopt telescopic supporting legs; a disc support is arranged at the lower end of the left telescopic supporting leg and hinged with the upper end of the middle of the left telescopic supporting leg; a measuring scale is arranged in a position where the left telescopic supporting leg is hinged with the disc support and hinged with one end of the left telescopic supporting leg; the rotating handle is arranged at the lower end of the right telescopic supporting leg and hinged with the upper end of the right telescopic supporting leg; a mounting ring is arranged at the lower end of the rotating handle and fixedly connected with the rotating handle; and a locking button is arranged on the mounting ring. Compared with the prior art, the bow compass has the characteristics of reasonable design, simple structure and convenience in use.
Description
Technical field
The utility model relates to a kind of teaching aid, specifically a kind of compasses.
Background technology
In the mathematical education course, often will use compasses construction, the leg of existing common compasses mostly is a prong, and when the student used on paper, prong often scratched paper easily.On blackboard, make bowlder if desired, normally need use bigger wooden compasses, one of this compasses is peg; Draw bowlder, need peg be withstood on the blackboard, because blackboard panel is more sliding; Peg can not be perpendicular to blackboard and draw when justifying; Cause peg ailhead active force to disperse, the round dot skidding occurs through regular meeting, just need repaint this moment.Wooden compasses length is carried inconvenience more greatly, and this not only lets teachers and students feel trouble, and has reduced efficiency of teaching.
Summary of the invention
The technical assignment of the utility model is the deficiency to prior art, and a kind of reasonable in design, compasses that result of use is good are provided.
The utility model solves the technical scheme that its technical problem adopted: comprise turning handle, connector and supporting leg; Turning handle is arranged on the connector upper end; Supporting leg is arranged on the connector; Said supporting leg is a telescopic outrigger, and the telescopic outrigger lower end of left part is provided with round doily pin and hinged with the upper end, center, and telescopic outrigger and round doily pin hinged place are provided with rule and hinged with the one of which end; The telescopic outrigger lower end of right part is provided with handler and hinged with its upper end, and the handler lower end is provided with installing ring and is fixedly connected with it, and installing ring is provided with the locking button.
Be respectively arranged with navigation button on the telescopic outrigger, the left part telescopic outrigger is provided with and the corresponding folder of laying of rule.
The round doily pin is that transparent plastic is processed.
A kind of compasses of the utility model compared with prior art, the beneficial effect that is produced is:
1), have characteristics such as reasonable in design, simple in structure, easy to use, function admirable, practicality, can draw circle very easily, the phenomenon that can not occur skidding is avoided repeatedly drawing, and has reduced unnecessary trouble, has improved efficiency of teaching.
2), volume is little, easy to carry, operates comparatively simply, use cost is low, both can on paper, draw, and also can on blackboard, draw, and can draw accurately according to the radius of circle.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model.
Among the figure: 1, turning handle, 2, connector, 3, telescopic outrigger, 4, lay folder, 5, rule, 6, navigation button, 7, the round doily pin, 8, handler, 9, the locking button, 10, installing ring, 11, pencil.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done following the detailed description.
Shown in accompanying drawing; A kind of compasses of the utility model, its structure comprises turning handle 1, connector 2 and supporting leg, turning handle 1 is arranged on connector 2 upper ends; Supporting leg is arranged on the connector 2; Said supporting leg is a telescopic outrigger 3, and telescopic outrigger 3 lower ends of left part are provided with round doily pin 7 and hinged with the upper end, center, and telescopic outrigger 3 is provided with rule 5 and hinged with the one of which end with round doily pin 7 hinged places; Telescopic outrigger 3 lower ends of right part are provided with handler 8 and hinged with its upper end, and handler 8 lower ends are provided with installing ring 10 and are fixedly connected with it, and installing ring 10 is provided with locking button 9.
Be respectively arranged with navigation button 6 on the telescopic outrigger 3, left part telescopic outrigger 3 is provided with and the corresponding folder 4 of laying of rule 5, when rule 5 is obsolete it is overlayed and lays in the folder 4.Round doily pin 7 is processed for transparent plastic.
On paper, carry out circle when drawing, can installing ring 10 in, place a pencil 11, and be fixed through locking button 9, again through rule 5 definite to draw circle radius draw again and get final product.In the time of need on blackboard, mapping, can be with telescopic outrigger 3 elongations and with navigation button 6 location.In installing ring 10, place chalk and be fixed and get final product.
Its processing and fabricating of a kind of compasses of the utility model is simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.
Except that the described technical characterictic of specification, be this professional's known technology.
Claims (3)
1. compasses; Comprise turning handle, connector and supporting leg; Turning handle is arranged on the connector upper end, and supporting leg is arranged on the connector, it is characterized in that said supporting leg is a telescopic outrigger; The telescopic outrigger lower end of left part is provided with round doily pin and hinged with the upper end, center, and telescopic outrigger and round doily pin hinged place are provided with rule and hinged with the one of which end; The telescopic outrigger lower end of right part is provided with handler and hinged with its upper end, and the handler lower end is provided with installing ring and is fixedly connected with it, and installing ring is provided with the locking button.
2. a kind of compasses according to claim 1 is characterized in that being respectively arranged with on the telescopic outrigger navigation button, and the left part telescopic outrigger is provided with and the corresponding folder of laying of rule.
3. a kind of compasses according to claim 1 is characterized in that the round doily pin is that transparent plastic is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204832460U CN202319547U (en) | 2011-11-29 | 2011-11-29 | Bow compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204832460U CN202319547U (en) | 2011-11-29 | 2011-11-29 | Bow compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202319547U true CN202319547U (en) | 2012-07-11 |
Family
ID=46431539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204832460U Expired - Fee Related CN202319547U (en) | 2011-11-29 | 2011-11-29 | Bow compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202319547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108274929A (en) * | 2018-01-02 | 2018-07-13 | 李文韬 | A kind of compasses |
-
2011
- 2011-11-29 CN CN2011204832460U patent/CN202319547U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108274929A (en) * | 2018-01-02 | 2018-07-13 | 李文韬 | A kind of compasses |
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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: 20120711 Termination date: 20131129 |