CN204924083U - Multi -functional protractor of using of scissors formula - Google Patents
Multi -functional protractor of using of scissors formula Download PDFInfo
- Publication number
- CN204924083U CN204924083U CN201520745040.9U CN201520745040U CN204924083U CN 204924083 U CN204924083 U CN 204924083U CN 201520745040 U CN201520745040 U CN 201520745040U CN 204924083 U CN204924083 U CN 204924083U
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- Prior art keywords
- protractor
- angle
- groove
- measure
- draw
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a multi -functional protractor of using of scissors formula, including the third protractor, the quantity of third protractor is two, and the centre of a circle department of two third protractors is through the shaft coupling. The utility model discloses device convenient to use can use different angle scales to measure respectively according to the length in the sideline of measuring the angle, can carry out a plurality of angular surveying in same centre of a circle department simultaneously, can measure angle in 360 degrees, it is accurate to draw when drawing the angle, can measure with first angle scale, second angle scale and third angle scale respectively same angle, prevent to measure the mistake through the contrast.
Description
Technical field
The utility model relates to a kind of shears type multifunction protractor, belongs to teaching aid field.
Background technology
The use to angle is often run in mathematical education, need to use protractor to the measurement of angle, but existing function of angle gauge is simple, simple measurement of angle can only be carried out, angle more than 180 degree of scopes cannot be measured, and because technical reason often occurs error, such as, when the sideline of angle is too short, the mode in range estimation or prolongation sideline can only be adopted to measure, there is measuring error, also having is exactly the careless amount of movement hornwork thus cause the mistake of measurement sometimes when measuring.
And when carrying out angle with protractor and drawing, because protractor is semicircle, behind a drawn sideline, the determination in another sideline is determined by the point on sideline and the center of circle, cause the inaccurate of another sideline thus, make the angle of drafting occur error.
Utility model content
The technical problems to be solved in the utility model is for above deficiency, provides a kind of shears type multifunction protractor, has easy to use; Drawn by mark post matching measurement, measure and draw accurately; The protractor that is coupling by two is measured, and can measure angle within the scope of 360 degree; By different angle indexs to same measurement of angle, prevent mistake by comparison; Can simultaneously to the advantage that multiple angles of concentric are measured.
For solving above technical matters, the utility model by the following technical solutions:
A kind of shears type multifunction protractor, comprise the 3rd protractor, the quantity of described 3rd protractor is two, and the circle centre position of two the 3rd protractors is coupling by wheel shaft.
Below the further optimization to such scheme:
The utility model device also comprises the first protractor, described first protractor is hinged with the second protractor by the wheel shaft of circle centre position, the top of the first protractor is hinged with the first mark post by wheel shaft, the second protractor inner hollow, and inside is hinged with the second mark post by wheel shaft.
Be provided with semicircular first groove in described first protractor, in the first groove, be inserted with the second protractor.
Described first protractor is provided with draw-in groove, on the radius that draw-in groove is positioned at the first groove and near circular arc place.
Described first protractor is provided with semi-moon shaped first groove near circular arc place, and the first groove is provided with the first angle index away from the side in the center of circle, and the radial location of the first protractor is provided with the first slide-rule dial.
Described second protractor is provided with columned block, and block is positioned on the radius of the second protractor, and block is corresponding with draw-in groove to be arranged.
After the utility model adopts above technical scheme, compared with prior art, have the following advantages: the utility model device is easy to use, can, according to the length in the sideline taken measurement of an angle, use the first angle index, the second angle index or the 3rd angle index to measure respectively; The multiple measurement of angle at same circle centre position can be carried out simultaneously; Can measure 360 degree of interior angles; When drawing angle, a sideline can be drawn in the radius of the first protractor or the second protractor, then be drawn a part of line segment in another sideline by the first mark post or the second mark post, draw accurately; Can measure with the first angle index, the second angle index and the 3rd angle index respectively same angle, prevent measuring error by contrast.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the utility model device in embodiment 1;
Accompanying drawing 2 is structural representations of the utility model device in embodiment 2;
Accompanying drawing 3 is structural representations of the first protractor;
Accompanying drawing 4 is structural representations of the second protractor;
In figure,
1-first protractor, 11-first groove, 12-wheel shaft, 13-first mark post, 14-first groove, 15-first angle index, 16-first slide-rule dial, 17-draw-in groove, 2-second protractor, 21-second groove, 22-second angle index, 23-second slide-rule dial, 24-the 3rd angle index, 25-block, 26-second mark post, 3-the 3rd protractor.
Embodiment
Embodiment 1, as shown in Figure 1, a kind of shears type multifunction protractor, comprise two the 3rd protractors 3, the circle centre position of two the 3rd protractors 3 is coupling by wheel shaft 12,3rd protractor 3 can use common protractor, and two the 3rd protractors 3 are coupling rotatable, can facilitate and carry out accurately measurement and the drafting of angle.
Embodiment 2, as shown in Fig. 2,3 and 4, a kind of shears type multifunction protractor, comprise the first protractor 1, semicircular first groove 11 is provided with in first protractor 1, the second protractor 2 is inserted with in first groove 11, the center of circle of the second protractor 2 and the first protractor 1 overlaps, first protractor 1 is provided with the wheel shaft 12 of hinged second protractor 2 at circle centre position, the top of the first protractor 1 is positioned at the circular arc place of the first protractor 1 by the other end that wheel shaft 12 is hinged with the first mark post 13, first mark post 13;
First protractor 1 is provided with away from the first groove 11 place the radial location that semi-moon shaped first groove 14, first groove 14 is provided with the first angle index 15, first protractor 1 away from the side in the center of circle and is provided with the first slide-rule dial 16.
Second protractor 2 is provided with semi-moon shaped second groove 21, second groove 21 and is provided with the second angle index 22 away from the side in the center of circle near circular arc place.
The radial location of the second protractor 2 is provided with the second slide-rule dial 23, second protractor 2 and is provided with the 3rd angle index 24 at center section.
Second protractor 2 inner hollow, the inner other end being hinged with the second mark post 26, second mark post 26 by wheel shaft 12 is positioned at the below of the second angle index 22.
First protractor 1 is provided with draw-in groove 17 above the first groove 11, on the radius that draw-in groove 17 is positioned at the first groove 11 and near circular arc place.
Second protractor 2 is provided with columned block 25 between the second angle index 22 and the second slide-rule dial 23, and block 25 is positioned on the radius of the second protractor 2, and block 25 is corresponding with draw-in groove 17 to be arranged.
The utility model device other device material therefors except wheel shaft all adopt transparent material.
During use, the center of circle of protractor is put into the required angle initial point place measured, then according to the length of two straight lines taken measurement of an angle, uses the first angle index 15, second angle index 22 or the 3rd angle index 24 to measure respectively; When needing to measure multiple angles of same circle centre position, by block 25, second protractor 2 being taken out, the measurement of multiple angle can be carried out simultaneously; When needing to measure the angle more than 180 degree of scopes, the second protractor 2 being taken out, measures with the first angle index 15, second angle index 22 or the 3rd angle index 24 as required; When drawing angle, a sideline can be drawn in the radius of the first protractor 1 or the second protractor 2, then be drawn a part of line segment in another sideline by the first mark post 13 or the second mark post 21, draw accurately; After measuring an angle, in order to prevent mistake simultaneously, the first angle index 15, second angle index 22 and the 3rd angle index 24 can be adopted to carry out measurement comparison respectively.
The above is the citing of the utility model preferred forms, and the part wherein do not addressed in detail is the common practise of those of ordinary skill in the art.Protection domain of the present utility model is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present utility model, also within protection domain of the present utility model.
Claims (6)
1. a shears type multifunction protractor, comprises the 3rd protractor (3), it is characterized in that: the quantity of described 3rd protractor (3) is two, and the circle centre position of two the 3rd protractors (3) is coupling by wheel shaft (12).
2. a kind of shears type multifunction protractor as claimed in claim 1, it is characterized in that: also comprise the first protractor (1), described first protractor (1) is hinged with the second protractor (2) by the wheel shaft (12) of circle centre position, the top of the first protractor (1) is hinged with the first mark post (13) by wheel shaft (12), second protractor (2) inner hollow, the inner wheel shaft (12) that passes through is hinged with the second mark post (26).
3. a kind of shears type multifunction protractor as claimed in claim 2, is characterized in that: be provided with semicircular first groove (11) in described first protractor (1), be inserted with the second protractor (2) in the first groove (11).
4. a kind of shears type multifunction protractor as claimed in claim 2, is characterized in that: described first protractor (1) is provided with draw-in groove (17), on the radius that draw-in groove (17) is positioned at the first groove (11) and near circular arc place.
5. a kind of shears type multifunction protractor as claimed in claim 2, it is characterized in that: described first protractor (1) is provided with semi-moon shaped first groove (14) near circular arc place, first groove (14) is provided with the first angle index (15) away from the side in the center of circle, and the radial location of the first protractor (1) is provided with the first slide-rule dial (16).
6. a kind of shears type multifunction protractor as claimed in claim 2, it is characterized in that: described second protractor (2) is provided with columned block (25), block (25) is positioned on the radius of the second protractor (2), and block (25) is corresponding with draw-in groove (17) to be arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745040.9U CN204924083U (en) | 2015-09-24 | 2015-09-24 | Multi -functional protractor of using of scissors formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745040.9U CN204924083U (en) | 2015-09-24 | 2015-09-24 | Multi -functional protractor of using of scissors formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204924083U true CN204924083U (en) | 2015-12-30 |
Family
ID=54973200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520745040.9U Expired - Fee Related CN204924083U (en) | 2015-09-24 | 2015-09-24 | Multi -functional protractor of using of scissors formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204924083U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112113491A (en) * | 2020-08-31 | 2020-12-22 | 福建圣泽生物科技发展有限公司 | Poultry chest angle ware |
-
2015
- 2015-09-24 CN CN201520745040.9U patent/CN204924083U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112113491A (en) * | 2020-08-31 | 2020-12-22 | 福建圣泽生物科技发展有限公司 | Poultry chest angle ware |
| CN112113491B (en) * | 2020-08-31 | 2022-05-24 | 福建圣泽生物科技发展有限公司 | Poultry chest angle ware |
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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: 20151230 Termination date: 20170924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |