CN201659801U - Ruler compass for teaching - Google Patents
Ruler compass for teaching Download PDFInfo
- Publication number
- CN201659801U CN201659801U CN2010201772533U CN201020177253U CN201659801U CN 201659801 U CN201659801 U CN 201659801U CN 2010201772533 U CN2010201772533 U CN 2010201772533U CN 201020177253 U CN201020177253 U CN 201020177253U CN 201659801 U CN201659801 U CN 201659801U
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- CN
- China
- Prior art keywords
- ruler
- teaching
- rail groove
- utility
- model
- 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 discloses a ruler compass for teaching, which comprises a ruler, wherein length scales are arranged on the ruler, a positioning rod is arranged in the position of the zero scale, a rail groove is arranged on the ruler, the rail groove is parallel to the scale surface of the ruler, a movable ring sleeve is arranged in the rail groove, a chalk is arranged in the movable ring sleeve, and the positioning rod is a conical rod. The utility model is characterized in that the utility model can overcome the defects in the prior art, the functions of the ruler and the functions of the compass are integrated into a whole body, and the drawing of straight lines and circles can be realized. The ruler compass is provided with a fixed length device, can be used for drawing the circles with the specified radii, and has the advantages of convenient use, easy use for the teaching, low manufacture cost, portability and the like.
Description
Technical field
The utility model relates to the teaching aid field, specifically is a kind of teaching ruler compasses.
Background technology
At present, in teaching field, when serving as a teacher on blackboard graphing, usually can use ruler and compasses, wherein utilize ruler to draw straight line, it is circular to utilize compasses to draw, and both can't substitute mutually.This will teacher of the seeking advice in teaching, must carry two cover teaching aids, carry inconvenience.Simultaneously, existing compasses for teaching can't sizing be drawn circle, must be earlier draws behind the length straight line of required radius of circle with ruler, chooses radius with compasses according to this straightway again and carries out that picture is round to be operated, and is very loaded down with trivial details, wasted instructional blocks of time.
Summary of the invention
The purpose of this utility model is to provide a kind of teaching ruler compasses, and it is integrated in one with ruler function and compasses function, can realize straight line and circular drafting, be provided with length control device, can draw and specify the circle of radius, easy to use, be easy to teaching and use.
The utility model for achieving the above object, be achieved through the following technical solutions: a kind of teaching ruler compasses, comprise ruler, ruler is provided with the length scale, at " 0 " scale place backstay is installed, is offered rail groove on ruler, rail groove is parallel with the scale face of ruler, mobile ring set is installed in the rail groove, chalk is installed in the mobile ring set.
Described backstay is a tapered rod.
Advantage of the present utility model is: can solve the deficiency that exists in the known technology; Ruler function and compasses function are integrated in one, can realize straight line and circular drafting; Be provided with length control device, can draw and specify the circle of radius size; Easy to use, be easy to teaching and use; Low cost of manufacture is easy to carry about with one etc.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Label shown in the accompanying drawing: 1, backstay; 2, length scale; 3, ruler; 4, rail groove; 5, chalk; 6, mobile ring set.
The specific embodiment
The utility model is described in further detail for the contrast accompanying drawing:
A kind of teaching ruler compasses described in the utility model, agent structure comprises ruler 3, and described ruler 3 is used ruler for teaching, and its length overall is at 75cm-100cm.On ruler 3, be provided with length scale 2, backstay 1 is installed at " 0 " scale place.Backstay 1 can use as the center of circle, backstay 1 general bolt, screw or the tapered rod of adopting, and preferred tapered rod, the tapered rod location is more accurate.Offer rail groove 4 on ruler 3, described rail groove 4 is parallel with the scale face of ruler 3.Mobile ring set 6 is installed in the rail groove 4, and mobile ring set 6 is installed in the rail groove 4, and can be along rail groove 4 translations.In the mobile ring set 6 chalk 5 is installed.
The utility model in use, described ruler 3 uses can be used as common instructional ruler, carries out writing of straight line on blackboard; When needs picture bowlder, chalk 5 is packed in the mobile ring set 6, adjust the position of mobile ring set 6 according to required radius of circle size, carry out the picture circle then and get final product.
Claims (2)
1. teaching ruler compasses, it is characterized in that: comprise ruler (3), ruler (3) is provided with length scale (2), backstay (1) is installed at " 0 " scale place, on ruler (3), offer rail groove (4), rail groove (4) is parallel with the scale face of ruler (3), and mobile ring set (6) is installed in the rail groove (4), and chalk (5) is installed in the mobile ring set (6).
2. a kind of teaching ruler compasses according to claim 1, it is characterized in that: backstay 1 is a tapered rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201772533U CN201659801U (en) | 2010-05-04 | 2010-05-04 | Ruler compass for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201772533U CN201659801U (en) | 2010-05-04 | 2010-05-04 | Ruler compass for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201659801U true CN201659801U (en) | 2010-12-01 |
Family
ID=43230215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201772533U Expired - Fee Related CN201659801U (en) | 2010-05-04 | 2010-05-04 | Ruler compass for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201659801U (en) |
-
2010
- 2010-05-04 CN CN2010201772533U patent/CN201659801U/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: 20101201 Termination date: 20110504 |