CN201086550Y - Educational compasses - Google Patents
Educational compasses Download PDFInfo
- Publication number
- CN201086550Y CN201086550Y CNU2007200874913U CN200720087491U CN201086550Y CN 201086550 Y CN201086550 Y CN 201086550Y CN U2007200874913 U CNU2007200874913 U CN U2007200874913U CN 200720087491 U CN200720087491 U CN 200720087491U CN 201086550 Y CN201086550 Y CN 201086550Y
- Authority
- CN
- China
- Prior art keywords
- compasses
- leg
- circle
- compass
- center
- 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
A pair of teaching compasses comprise a compass handle (7), a compass centre leg (8), a compass circle-painting leg (6), is characterized in that: a turning pellet (1) is connected with the end of the compass centre leg (8) and inserted in a semicircle groove (2), thus can turn freely, the semicircle groove (2) is combined with a cake-like magnet (3) which has a plane at the other surface. A cylindrical clamp (5) is arranged at the end of the compass circle-painting leg (6) and a clamped bolt (4) is arranged on the sidewall thereof. The utility model has the advantages of: convenient and steady usage, and simple structure.
Description
Technical field
The utility model relates to teaching aid, is a kind of educational compasses specifically.
Background technology
At present, the teacher wants at the blackboard upper drawing circle, the part in the center of circle of the compasses for teaching that uses all can not directly be fixed on the blackboard, has plenty of with iron nail and makes, and usually wastes a lot of times and removes the picture circle because of the fixing shakiness in the center of circle, and, the center of circle scratches the blackboard damage very big on blackboard, and in addition, compasses all can only be at the blackboard upper drawing circle mostly, on blank just can not, extremely inconvenient.
Summary of the invention
The purpose of this utility model provides and a kind ofly can be easily is fixed on the blackboard center of circle end of compasses non-slip and can change the compasses of various nibs easily.
Described educational compasses, comprise compasses handle 7, compasses center of circle leg 8, compasses picture circle leg 6, it is characterized in that: be connected with one at compasses center of circle leg 8 ends and turn to ball 1, turn to ball to be embedded in the semi-circular recesses 2, and it is free to rotate, semi-circular recesses 2 is combined as a whole with patty magnet 3, and the another side of patty magnet 3 is a plane.The end that compasses are drawn circle leg 6 is provided with cylindrical shape anchor clamps 5, and its sidewall is equipped with one and clamps nut 4.
The utility model has the advantages that: easy to use, stable, simple in structure.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified: see accompanying drawing 1, described educational compasses, comprise compasses handle 7, compasses center of circle leg 8, compasses are drawn circle leg 6, it is characterized in that: be connected with one at compasses center of circle leg 8 ends and turn to ball 1, turn to ball to be embedded in the semi-circular recesses 2, and it is free to rotate, semi-circular recesses 2 is combined as a whole with patty magnet 3, the another side of patty magnet 3 is a plane, can directly be pull-in on magnetic or be lined with on the blackboard plane of iron plate, blackboard not carrying magnetic patty magnet 3 also can be directly and blackboard plane contact and be difficult for skidding.
Compasses are drawn the cylinder anchor clamps 5 of circle leg 6 ends can dismantle paintbrush easily by unscrewing fishbolt 4, tighten fishbolt 4 and the blank pen can be waited other tool directly to be contained in compasses to draw on the circle leg 6, therefore make compasses can be applied to blank or other picture plane outside the blackboard.
Claims (2)
1. educational compasses, comprise compasses handle (7), compasses center of circle leg (8), compasses picture circle leg (6), it is characterized in that: be connected with one at compasses center of circle leg (8) end and turn to ball (1), turn to ball to be embedded in the semi-circular recesses (2), semi-circular recesses (2) is combined as a whole with patty magnet (3), and the another side of patty magnet (3) is a plane.
2. educational compasses according to claim 1 is characterized in that: the end that compasses are drawn circle leg (6) is provided with cylindrical shape anchor clamps (5), and its sidewall is equipped with one and clamps nut (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200874913U CN201086550Y (en) | 2007-10-10 | 2007-10-10 | Educational compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200874913U CN201086550Y (en) | 2007-10-10 | 2007-10-10 | Educational compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201086550Y true CN201086550Y (en) | 2008-07-16 |
Family
ID=39634145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200874913U Expired - Fee Related CN201086550Y (en) | 2007-10-10 | 2007-10-10 | Educational compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201086550Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950941A (en) * | 2012-11-20 | 2013-03-06 | 无锡商业职业技术学院 | Compasses for whiteboard teaching |
| CN105437832A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Leg-height-adjustable compasses |
-
2007
- 2007-10-10 CN CNU2007200874913U patent/CN201086550Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950941A (en) * | 2012-11-20 | 2013-03-06 | 无锡商业职业技术学院 | Compasses for whiteboard teaching |
| CN105437832A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Leg-height-adjustable compasses |
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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 |