CN202283845U - Combination drawing tool - Google Patents
Combination drawing tool Download PDFInfo
- Publication number
- CN202283845U CN202283845U CN2011204280770U CN201120428077U CN202283845U CN 202283845 U CN202283845 U CN 202283845U CN 2011204280770 U CN2011204280770 U CN 2011204280770U CN 201120428077 U CN201120428077 U CN 201120428077U CN 202283845 U CN202283845 U CN 202283845U
- Authority
- CN
- China
- Prior art keywords
- protractor
- base
- scale
- drawing tool
- angle side
- 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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- Drawing Aids And Blackboards (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a combination drawing tool. The bottom edge of a protractor (1) is movably connected with the long right-angle side of a triangle (2), small round holes (3) are respectively arranged between the bottom edge of the protractor (1) and the 0-180 degree scale on a straight line parallel to the bottom edge and at the position of points corresponding to non-zero integer scales at intervals, a sawtooth groove (4) is arranged at the right lower end of the protractor (1), and the left side of the sawtooth groove (4) corresponds to the 0 scale of the bottom edge. Due to the fact that the special 180-degree protractor and the special triangle are designed and capable of achieving all the drawing functions in matching mode, complex drawing tools are saved, and the trigonometric function can be obtained intuitively. The combination drawing tool is made of transparent materials and is easy to carry and convenient to use.
Description
Technical field: the utility model relates to a kind of combination drawing tools product.
Background technology: at present, known drawing tools mainly contains 60 ° of set squares, 45 ° of set squares, a protractor, compasses, a ruler etc.These drawing tools use inconvenience, and can not intuitively obtain trigonometric function because the appearance number is many, not portable.
The utility model content: the purpose of the utility model has been to overcome the drawback that existing drawing tools exists.Provide need only one special 180 ° of protractors and special 60 ° of set square just can accomplish a kind of combination drawing tools of all picture functions.The utility model solves the technical scheme that its technical problem adopted: the long right-angle side of described protractor 1 base and set square 2 flexibly connects; Between the base of protractor 1 and 0 °～180 ° graduation marks and be parallel on the straight line on base and circular aperture 3 be set respectively with the corresponding some place equidistance of nonzero integer scale; Serrated slot 4 is arranged on protractor 1 bottom righthand side, and serrated slot 4 left sides are corresponding with 0 scale on base.
The beneficial effect of the utility model is: owing to designed special 180 ° of protractors and 60 ° of special set squares; The two cooperates all the picture functions just can accomplish 60 ° of set squares, 45 ° of set squares, protractor, compasses, ruler; Saved various drawing instrument, and can intuitively obtain trigonometric function, and made with transparent material; Portable, easy to use.
Description of drawings: Fig. 1 is the combination sketch map of the utility model.
The specific embodiment: as shown in Figure 1; The long right-angle side of described protractor 1 base and set square 2 flexibly connects; Between the base of protractor 1 and 0 °～180 ° graduation marks and be parallel on the straight line on base and circular aperture 3 be set respectively with the corresponding some place equidistance of nonzero integer scale; Serrated slot 4 is arranged on protractor 1 bottom righthand side, and serrated slot 4 left sides are corresponding with 0 scale on base.
As shown in Figure 1, the base equidistance of described protractor 1 indicates scale value, and 0 °～180 ° scale value equidistance are marked on the sector curved scale line.
As shown in Figure 1, described set square 2 is 60 °, and built-in 45 ° of set square 5.
As shown in Figure 1; Evenly mark 0～10 numerical value in 10 cm range from left to right on the long right-angle side of described set square 2; 0 graduation mark extends to hypotenuse and intersects, and is carved with standard length unit on short right-angle side and the hypotenuse, on built-in 5 three limits of 45 ° of set squares, all is carved with standard length unit.
The operation sequence of the utility model is: draw bowlder can in the circular aperture on special 180 ° of protractors, insert a sharp shaped material for example pin or figure pin do the center of circle, promote serrated slot or other circular aperture is drawn round with pencil.When the number of degrees of angulation, can directly measure with 180 ° of protractors.The base of 180 ° of protractors and special 60 ° of set squares are used when drawing parallel lines.The hypotenuse of special 60 ° of set squares can be made ruler and use.When reading the trigonometric function at angle, can on whole limit, mark be the point of 10 centimetres away from summit, let 0 graduation mark that prolongs on special 60 ° of set squares overlap with 90 ° of lines on the protractor, long right-angle side is crossed this punctuate, on long right-angle side, reads cosine value; Let 0 graduation mark that prolongs on special 60 ° of set squares overlap with the initial line or the initial line extended line at angle, long right-angle side is crossed this punctuate, on long right-angle side, reads sine, cosine value; Being summarised as is sine value vertically, and level is a cosine value, symbol reference coordinate system symbol, thus obtain tangent, cotangent value indirectly, also can obtain arcsine value, anticosine value indirectly.
Claims (4)
1. one kind is made up drawing tools; The long right-angle side that it is characterized in that described protractor (1) base and set square (2) flexibly connects; Between the base of protractor (1) and 0 °～180 ° graduation marks and be parallel on the straight line on base and circular aperture (3) be set respectively with the corresponding some place equidistance of nonzero integer scale; Serrated slot (4) is arranged on protractor (1) bottom righthand side, and serrated slot (4) left side is corresponding with 0 scale on base.
2. multi-functional combination drawing tool according to claim 1 is characterized in that the base equidistance of described protractor (1) indicates scale value, and 0 °～180 ° scale value equidistance are marked on the sector curved scale line.
3. multi-functional combination drawing tool according to claim 1 is characterized in that described set square (2) is 60 °, and built-in one 45 ° set squares (5).
4. multi-functional combination drawing tool according to claim 1; It is characterized in that being evenly marking 0～10 numerical value in 10 cm range from left to right on the long right-angle side of described set square (2); 0 graduation mark extends to hypotenuse and intersects; Be carved with standard length unit on short right-angle side and the hypotenuse, on (5) three limits of 45 ° of built-in set squares, all be carved with standard length unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204280770U CN202283845U (en) | 2011-10-27 | 2011-10-27 | Combination drawing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204280770U CN202283845U (en) | 2011-10-27 | 2011-10-27 | Combination drawing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202283845U true CN202283845U (en) | 2012-06-27 |
Family
ID=46295375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204280770U Expired - Fee Related CN202283845U (en) | 2011-10-27 | 2011-10-27 | Combination drawing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202283845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864121A (en) * | 2017-03-15 | 2017-06-20 | 李路平 | A kind of mathematical education teaching aid |
-
2011
- 2011-10-27 CN CN2011204280770U patent/CN202283845U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864121A (en) * | 2017-03-15 | 2017-06-20 | 李路平 | A kind of mathematical education teaching aid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20151027 |
|
| EXPY | Termination of patent right or utility model |