CN205292047U - A multi -angle angulometer for mathematical education - Google Patents
A multi -angle angulometer for mathematical education Download PDFInfo
- Publication number
- CN205292047U CN205292047U CN201620048182.4U CN201620048182U CN205292047U CN 205292047 U CN205292047 U CN 205292047U CN 201620048182 U CN201620048182 U CN 201620048182U CN 205292047 U CN205292047 U CN 205292047U
- Authority
- CN
- China
- Prior art keywords
- marking
- line frame
- out rule
- frame
- dowel disc
- 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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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model provides a multi -angle angulometer for mathematical education, it includes the body of protractor, the body is transparent disc shape, is equipped with the calibrated scale of ring shape on the body border, is equipped with a positioning disk at the body center be equipped with sectorial first marking off frame, circular shape second marking off frame and circular shape third marking off frame on the body between positioning disk and the calibrated scale respectively, still install a scratch ruler, the 2nd scratch ruler and the 3rd scratch ruler on the positioning disk, a scratch ruler, the 2nd scratch ruler and the 3rd scratch ruler all with positioning disk rotatable coupling, in a scratch ruler located first marking off frame, in the 2nd scratch ruler located second marking off frame, the 3rd scratch ruler located in the third marking off frame. The utility model provides high marking off efficiency has alleviateed the mr's that teaches burden, has also saved the time simultaneously, its convenient to use, flexibility moreover, and it is also very convenient to carry, and the cost is also relatively low.
Description
Technical field
The utility model relates to a kind of teaching apparatus for mathematics, and especially a kind of multi-angle angulometer for mathematics teaching, belongs to teaching aid technical field.
Background technology
In the process of now current mathematics classroom teaching, teacher usually needs to draw straight line on blackboard, the figure of trilateral and different angles, corresponding just needs use ruler, the multiple types of tools such as protractor, again owing to an instrument once can only be used at black lining out or when measuring angle, therefore the instrument that simple figure usually needs Reusability repeatedly different just can complete, particularly for there being multiple different angles it needs to be determined that figure for, just use protractor repeatedly is needed to determine, such picture mode causes efficiency during classroom instruction lower, too increase the burden of teacher, also many time in classroom have been stopped over simultaneously.
Practical novel content
For above-mentioned deficiency of the prior art, main purpose of the present utility model is that solving existing current protractor once can only measure an angle, inconvenient problem with use, and a kind of multi-angle angulometer for mathematics teaching that can simultaneously measure multiple angle is provided.
The technical solution of the utility model: a kind of multi-angle angulometer for mathematics teaching, it is characterized in that, comprise the body of protractor, described body is transparent disc-shape, body edge is provided with the scale card of toroidal, the heart is provided with a dowel disc in the body, body between described dowel disc and scale card is respectively equipped with the first fan-shaped line frame, the 2nd circular line frame and the circular the 3rd line frame, dowel disc is also provided with the first marking-out rule, 2nd marking-out rule and the 3rd marking-out rule, the first described marking-out rule, 2nd marking-out rule and the 3rd marking-out rule are all rotatably connected with dowel disc, described first marking-out rule is located in the first line frame, 2nd marking-out rule is located in the 2nd line frame, 3rd marking-out rule is located in the 3rd line frame.
Optimally, being also connected with location bar between dowel disc and scale card, described location bar is through the center of dowel disc, and the two ends of location bar are separately fixed on scale card.Dowel disc, by installing location bar, can be fixed, prevent its slip that is in use moved by the utility model on the one hand, can also increase by one on the other hand by force, can as lever when the instrument of use.
Optimally, the equal diameters of the 2nd described line frame and the 3rd line frame, the 2nd described line frame and the 3rd line frame are symmetricly set on the both sides of the first line frame. It is employed herein the design of the line frame of two identical sizes, it is intended that both ensured to draw the line segment of multiple angle simultaneously, also can have enough spaces, certainly, according to the difference of user demand simultaneously, it is also possible to adopt the design of the line frame of different size.
Optimally, the diameter of described 2nd line frame is less than the diameter of dowel disc. The object of design is the stability in order to ensure dowel disc like this.
Relative to prior art, the utility model has following useful effect:
1, improve line efficiency: the multi-angle angulometer for mathematics teaching of the present utility model can measure multiple angle simultaneously and rules, very big like this efficiency when improve picture, alleviates the burden of the teacher that teaches, also saves the time simultaneously.
2, easy to use, flexible, carry also very convenient simultaneously, cost is also relatively low.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of multi-angle angulometer for mathematics teaching of the utility model.
In figure, 1 body, 2 scale cards, 3 dowel discs, 4 first line frames, 5 the 2nd line frames, 6 the 3rd line frames, 7 first marking-out rules, 8 the 2nd marking-out rules, 9 the 3rd marking-out rules, 10 location bars.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of multi-angle angulometer for mathematics teaching of the present utility model, comprise the body 1 of protractor, described body 1 is transparent disc-shape, the scale card 2 being provided with toroidal on body 1 edge, is provided with a dowel disc 3 at body 1 center, is also connected with location bar 10 between dowel disc 3 and scale card 2, described location bar 10 is through the center of dowel disc 3, and the two ends of location bar 10 are separately fixed on scale card 2.
See Fig. 1, body 1 between described dowel disc 3 and scale card 2 is respectively equipped with the 3rd line frame 6 of the first fan-shaped line frame 4, the circular the 2nd line frame 5 and circle, dowel disc 3 is also provided with the first marking-out rule 7, the 2nd marking-out rule 8 and the 3rd marking-out rule 9, described the first marking-out rule 7, the 2nd marking-out rule 8 and the 3rd marking-out rule 9 are all rotatably connected with dowel disc 3, described first marking-out rule 7 is located in the first line frame 4,2nd marking-out rule 8 is located in the 2nd line frame 5, and the 3rd marking-out rule 9 is located in the 3rd line frame 6. The equal diameters of the 2nd described line frame 5 and the 3rd line frame 6, the 2nd described line frame 5 and the 3rd line frame 6 are symmetricly set on the both sides of the first line frame 4. The diameter of described 2nd line frame 5 is less than the diameter of dowel disc 3.
A kind of multi-angle angulometer for mathematics teaching of the present utility model is easy to use, and function relative abundance, it is possible to once completes measuring of multiple angle, and can draw corresponding angle simultaneously, has good practical value.
It should be noted that, above embodiment is only in order to illustrate technical solutions of the utility model but not restriction technologies scheme, although the utility model is explained in detail by applicant with reference to better embodiment, it will be understood by those within the art that, those amendments that technical solutions of the utility model are carried out or equivalent replacement, objective and the scope of the technical program can not be departed from, all should be encompassed in the middle of the utility model right.
Claims (4)
1. the multi-angle angulometer for mathematics teaching, it is characterized in that, comprise the body (1) of protractor, described body (1) is transparent disc-shape, body (1) edge is provided with the scale card (2) of toroidal, a dowel disc (3) it is provided with at body (1) center, body (1) between described dowel disc (3) and scale card (2) is respectively equipped with the first fan-shaped line frame (4), the 2nd circular line frame (5) and the circular the 3rd line frame (6), dowel disc (3) is also provided with the first marking-out rule (7), 2nd marking-out rule (8) and the 3rd marking-out rule (9), described the first marking-out rule (7), 2nd marking-out rule (8) and the 3rd marking-out rule (9) are all rotatably connected with dowel disc (3), described first marking-out rule (7) is located in the first line frame (4), 2nd marking-out rule (8) is located in the 2nd line frame (5), 3rd marking-out rule (9) is located in the 3rd line frame (6).
2. a kind of multi-angle angulometer for mathematics teaching according to claim 1, it is characterized in that, location bar (10) also it is connected with between dowel disc (3) and scale card (2), described location bar (10) is through the center of dowel disc (3), and the two ends of location bar (10) are separately fixed on scale card (2).
3. a kind of multi-angle angulometer for mathematics teaching according to claim 2, it is characterized in that, the 2nd described line frame (5) and the equal diameters of the 3rd line frame (6), the 2nd described line frame (5) and the 3rd line frame (6) are symmetricly set on the both sides of the first line frame (4).
4. a kind of multi-angle angulometer for mathematics teaching according to claim 3, it is characterised in that, the diameter of described 2nd line frame (5) is less than the diameter of dowel disc (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048182.4U CN205292047U (en) | 2016-01-19 | 2016-01-19 | A multi -angle angulometer for mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048182.4U CN205292047U (en) | 2016-01-19 | 2016-01-19 | A multi -angle angulometer for mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205292047U true CN205292047U (en) | 2016-06-08 |
Family
ID=56428735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620048182.4U Expired - Fee Related CN205292047U (en) | 2016-01-19 | 2016-01-19 | A multi -angle angulometer for mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205292047U (en) |
-
2016
- 2016-01-19 CN CN201620048182.4U patent/CN205292047U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20170119 |