CN201881748U - Teaching compass ruler - Google Patents
Teaching compass ruler Download PDFInfo
- Publication number
- CN201881748U CN201881748U CN2010206825626U CN201020682562U CN201881748U CN 201881748 U CN201881748 U CN 201881748U CN 2010206825626 U CN2010206825626 U CN 2010206825626U CN 201020682562 U CN201020682562 U CN 201020682562U CN 201881748 U CN201881748 U CN 201881748U
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- Prior art keywords
- ruler
- model
- utility
- teaching
- compasses
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- Expired - Fee Related
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Abstract
The utility model discloses a teaching compass ruler comprising a straight scale (4). The straight scale (4) is provided with scale marks; a sucker (1) and 1 to 10 chalk insertion holes (2) evenly arranged are arranged at the middle part of the straight scale (4) in sequence; and the straight scale (4) is also provided with a horizontal bead (3). The teaching compass ruler has more functions, such as better drawing a straight line on a blackboard, keeping the horizontality of the straight line, better meeting the need of precisely drawing the horizontal line, and being capable of drawing a circle on the blackboard, therefore, the functions and the application places of the compass ruler are increased.
Description
Technical field
The utility model relates to the technical field of a kind of mathematical education with teaching aid, is specifically related to a kind of compasses for teaching chi.
Background technology
Existing compasses generally have two supporting legs, paintbrush is installed in the end of one of them supporting leg, the end of another supporting leg is a pointed draw point, be mainly used to the picture circle, this compasses are drawn circle on paper better, if but in teaching, just not handy at the blackboard upper drawing circle, its reason is that the pointed draw point on the supporting leg skids on blackboard easily, the center of circle is bad to be determined.When the teacher drew straight line with ruler on blackboard, often with sensation picture straight line, drawn straight line might not the maintenance level, the bad grasp of precision.
The Chinese patent publication number is CN201211795, the utility model specification that open day is on March 25th, 2009 discloses a kind of " sucker compass ", this utility model comprises that fixed supporting leg, sucker, ruler and chalk sleeve constitute, the neck suitable for reading position of sucker is inserted in the lower end of fixed supporting leg, the upper end of fixed supporting leg is fixed on the ruler, is socketed with chalk sleeve on the ruler.This utility model has simple in structure, easy to use, can help the teacher at blackboard upper drawing circle and other circular patterns effectively.But this utility model allomeric function is more single, can only be used for the picture circle and use, and the scope of application is narrower, and the teaching aid that the teacher need carry is more, brings inconvenience.
The utility model content
The purpose of this utility model is deficiencies such as, function singleness more at existing mathematics teacher's teaching aid, the scope of application is narrower, provide a kind of diverse in function, the scope of application extensively, whole light compasses for teaching chi.
The purpose of this utility model realizes by following technological means: a kind of compasses for teaching chi, include ruler, and ruler is provided with graduation mark, 1-10 the chalk jack that the centre position of described ruler also is disposed with sucker and evenly is provided with.
Also be provided with horizontal pearl on the described ruler.
Compared with prior art the utlity model has following tangible advantage: this compasses for teaching chi function is more, except when can on blackboard, carry out the picture straight line preferably, can also guarantee the horizontality of drawn straight line, needs when having satisfied accurate picture horizontal line preferably, in addition, can also on blackboard, carry out the picture circle, increase the function and the application place of this compasses for teaching chi.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Among the figure, 1-sucker, 2-chalk jack, the horizontal pearl of 3-, 4-ruler.
The specific embodiment
Below in conjunction with the description of drawings and the specific embodiment the utility model is described in further detail:
A kind of compasses for teaching chi as shown in fig. 1 includes ruler 4, and ruler 4 is provided with graduation mark, 1-10 the chalk jack 2 that the centre position of described ruler 4 also is disposed with sucker 1 and evenly is provided with.Be provided with like this, this compasses for teaching chi function is more, except when can on blackboard, carry out the picture straight line preferably, can also fix a bit by sucker 1, then chalk is inserted into any one chalk jack 2 rotation the utility model and just can on blackboard, carries out the picture circle, increased the function and the application place of this compasses for teaching chi.
Also be provided with horizontal pearl 3 on the described ruler 4.Be provided with like this, the utility model can be by the horizontal pearl 3 more accurate horizontalities that control drawn straight line of grasping, the needs when having satisfied accurate picture horizontal line preferably.
In a word, the utility model provides a kind of diverse in function, extensive, the whole light compasses for teaching chi of the scope of application.The above; it only is a part of specific embodiment of the present utility model; protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (2)
1. a compasses for teaching chi includes ruler (4), and ruler (4) is provided with graduation mark, it is characterized in that: 1-10 the chalk jack (2) that the centre position of described ruler (4) also is disposed with sucker (1) and evenly is provided with.
2. a kind of compasses for teaching chi according to claim 1 is characterized in that: also be provided with horizontal pearl (3) on the described ruler (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206825626U CN201881748U (en) | 2010-12-15 | 2010-12-15 | Teaching compass ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206825626U CN201881748U (en) | 2010-12-15 | 2010-12-15 | Teaching compass ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201881748U true CN201881748U (en) | 2011-06-29 |
Family
ID=44179285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206825626U Expired - Fee Related CN201881748U (en) | 2010-12-15 | 2010-12-15 | Teaching compass ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201881748U (en) |
-
2010
- 2010-12-15 CN CN2010206825626U patent/CN201881748U/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: 20110629 Termination date: 20111215 |