CN203697777U - Angle ruler for mathematics teaching - Google Patents
Angle ruler for mathematics teaching Download PDFInfo
- Publication number
- CN203697777U CN203697777U CN201420109120.0U CN201420109120U CN203697777U CN 203697777 U CN203697777 U CN 203697777U CN 201420109120 U CN201420109120 U CN 201420109120U CN 203697777 U CN203697777 U CN 203697777U
- Authority
- CN
- China
- Prior art keywords
- ruler
- chi
- breach
- auxiliary
- angle
- 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
Links
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- Length-Measuring Instruments Using Mechanical Means (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to an angle ruler for mathematics teaching. The angle ruler comprises a main ruler, wherein the upper end of the main ruler is in articulated connection with an auxiliary ruler; a first stepped notch is formed nearby the lower end of the side wall of the auxiliary ruler; a connecting ruler is in articulated connection to the position nearby the bottom of the side wall of the first notch; a second stepped notch is formed nearby the bottom end of the main ruler; a fixing bar corresponding to the connecting ruler is arranged on the second notch; a plurality of angle fixing holes are formed in the connecting ruler; and the outer surface of the connecting ruler and the outer surface of the auxiliary ruler are located in the same plane. The angle ruler for the mathematics teaching adjusts the angle between the main ruler and the auxiliary ruler through the angle fixing holes, so that carrying, using and storage of the teaching ruler are greatly facilitated.
Description
Technical field
The utility model relates to a kind of bevel protractor for mathematical education.
Background technology
In mathematical education, often can need to measure or draw the figure of various angles, still existing mathematics teaching tool is in order to be convenient for measuring angle, and the volume of instrument is all very large, is not only inconvenient to deposit and carry, and uses also very inconvenient.
Summary of the invention
The technical problems to be solved in the utility model is: in order to solve the problem of the prior art existence in above-mentioned background technology, a kind of improved bevel protractor for mathematical education is provided, solve common teaching ruler volume very large, be inconvenient to the problem of depositing, carry and using.
The utility model solves the technical scheme that its technical problem adopts: a kind of bevel protractor for mathematical education, comprise main scale, main scale upper end chain connection has auxiliary chi, the nearly lower end of auxiliary ulnar side wall offers the first step-like breach, the first breach side-wall near-bottom portion chain connection has connection chi, on main scale, nearly bottom offers stepped the second breach, on the second breach, be provided with the fixed bar corresponding with connecting chi, connect on chi and offer several for angle fixing hole, connect chi outer surface and auxiliary chi outer surface and be positioned at same plane.
Further, the first cut height is identical with the second cut height.
Further, main scale thickness is identical with auxiliary chi thickness.
The beneficial effects of the utility model are that the bevel protractor for mathematical education of the present utility model regulates the angle between main scale and auxiliary chi by angle fixing hole, greatly facilitates carrying, use and depositing of teaching ruler.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Structural representation when Fig. 1 is the utility model storage.
Structural representation when Fig. 2 is the utility model use.
In figure: 1. main scale, 2. auxiliary chi, 3. the first breach, 4. connects chi, 5. the second breach, 6. fixed bar, 7. angle fixing hole.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present utility model is only described in a schematic way, and therefore it only shows the formation relevant with the utility model.
A kind of bevel protractor for mathematical education as depicted in figs. 1 and 2, comprise main scale 1, main scale 1 upper end chain connection has auxiliary chi 2, the auxiliary chi 2 nearly lower ends of sidewall offer the first step-like breach 3, the first breach 3 side-wall near-bottom portion chain connections have the chi 4 of connection, on main scale 1, nearly bottom offers stepped the second breach 5, on the second breach 5, be provided with the fixed bar corresponding with connecting chi 46, connect on chi 4 and offer 12 for angle fixing hole 7, connect the corresponding each angle fixing hole of chi 47 positions and be provided with angle index table, by the fixed bar on main scale 16 being inserted to different angle fixing holes, thereby make to form different angles between main scale 1 and auxiliary chi 2, connect chi 4 outer surfaces and auxiliary chi 2 outer surfaces and be positioned at same plane, greatly be convenient for carrying and deposit.
Further, the first breach 3 height are highly identical with the second breach 5, further, main scale 1 thickness is identical with auxiliary chi 2 thickness, bevel protractor for mathematical education of the present utility model regulates the angle between main scale 1 and auxiliary chi 2 by angle fixing hole, greatly facilitates carrying, use and depositing of teaching ruler.
Taking above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this utility model technological thought, carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on description, must determine its technical scope according to claim scope.
Claims (3)
1. the bevel protractor for mathematical education, comprise main scale (1), it is characterized in that: described main scale (1) upper end chain connection has auxiliary chi (2), the described nearly lower end of auxiliary chi (2) sidewall offers step-like the first breach (3), described the first breach (3) side-wall near-bottom portion chain connection has connection chi (4), the upper nearly bottom of described main scale (1) offers stepped the second breach (5), on described the second breach (5), be provided with the fixed bar (6) corresponding with connecting chi (4), on described connection chi (4), offer several for angle fixing hole (7), described connection chi (4) outer surface and auxiliary chi (2) outer surface are positioned at same plane.
2. the bevel protractor for mathematical education according to claim 1, is characterized in that: described the first breach (3) height is highly identical with the second breach (5).
3. the bevel protractor for mathematical education according to claim 1, is characterized in that: described main scale (1) thickness is identical with auxiliary chi (2) thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109120.0U CN203697777U (en) | 2014-03-12 | 2014-03-12 | Angle ruler for mathematics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109120.0U CN203697777U (en) | 2014-03-12 | 2014-03-12 | Angle ruler for mathematics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203697777U true CN203697777U (en) | 2014-07-09 |
Family
ID=51048267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420109120.0U Expired - Fee Related CN203697777U (en) | 2014-03-12 | 2014-03-12 | Angle ruler for mathematics teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203697777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709484A (en) * | 2018-08-13 | 2018-10-26 | 杰瑞石油天然气工程有限公司 | A kind of indexing round type bevel protractor device |
-
2014
- 2014-03-12 CN CN201420109120.0U patent/CN203697777U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709484A (en) * | 2018-08-13 | 2018-10-26 | 杰瑞石油天然气工程有限公司 | A kind of indexing round type bevel protractor device |
| CN108709484B (en) * | 2018-08-13 | 2024-05-07 | 杰瑞石油天然气工程有限公司 | Reference circle type angle ruler device |
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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: 20140709 Termination date: 20150312 |
|
| EXPY | Termination of patent right or utility model |