CN205334825U - Triangle -shaped demonstrates teaching aid - Google Patents
Triangle -shaped demonstrates teaching aid Download PDFInfo
- Publication number
- CN205334825U CN205334825U CN201521115990.XU CN201521115990U CN205334825U CN 205334825 U CN205334825 U CN 205334825U CN 201521115990 U CN201521115990 U CN 201521115990U CN 205334825 U CN205334825 U CN 205334825U
- Authority
- CN
- China
- Prior art keywords
- magnet
- side rod
- sleeve
- bar
- triangle
- 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
Abstract
The utility model discloses a triangle -shaped demonstrates teaching aid, including side rod A, side rod B, side rod C, disc protractor, sleeve, magnet A, fastening screw, magnet B, the right pole and the left side pole, a serial communication port, side rod A, side rod B and side rod C comprise the left side pole and the right pole, the inside of the left side pole is the hollow, openly is equipped with the disc protractor, and the reverse side is equipped with sleeve, magnet A and fastening screw, and magnet A is located the sleeve bottom, disc protractor fixed mounting is on the pole of the left side, magnet A's diameter and telescopic diameter equal, the sleeve is located the high order end of the left side pole, fastening screw is located the low order end of the left side pole, and fastening screw's the surface of revolution is the mat surface simultaneously, the right pole is equipped with magnet B, magnet B is located the low order end of the right pole, the utility model discloses simple structure is adapted to mr and explains the triangle -shaped relevant nature that becomes.
Description
Technical field
This utility model relates to a kind of maths demonstration teaching aid, specifically a kind of triangle demonstration teaching aid。
Background technology
Current mathematical education has the much knowledge about triangle, such as the size of triangle, area, shape, three frontier juncture systems etc., but say class hour mostly rely on picture or oral account describe, because not changing the triangle demonstration teaching aid of size, shape at any time, thus directly perceived, teaching efficiency is bad。
Utility model content
The purpose of this utility model is in that to provide a kind of triangle demonstration teaching aid, with the problem solving to propose in above-mentioned background technology。
For achieving the above object, this utility model provides following technical scheme:
A kind of triangle demonstration teaching aid, including side rod A, side rod B, side rod C, disk protractor, sleeve, magnet A, trip bolt, magnet B, the right bar and left side bar；Described side rod A, side rod B and side rod C are made up of left side bar and the right bar；Being internally hollow of described left side bar, front is provided with disk protractor, reverse side is provided with sleeve, magnet A and trip bolt, and magnet A is positioned at sleeve bottom；Described disk protractor is fixedly mounted on the bar of the left side；Described magnet A is fixed on sleeve bottom, simultaneously the equal diameters of the diameter of magnet A and sleeve；Described sleeve is positioned at the high order end of left side bar；Described trip bolt is positioned at the low order end of left side bar, and the surfaces of revolution of trip bolt is matsurface simultaneously；Described the right bar is provided with magnet B；Described magnet B is positioned at the low order end of the right bar；Matched in clearance is adopted between described magnet B and sleeve。
As further program of the utility model: graduation mark is all carved with in the front of described side rod A, side rod B and side rod C。
As further program of the utility model: described side rod A, side rod B and side rod C are individualisms。
As further program of the utility model: described side rod A, side rod B and side rod C all can regulate length。
Compared with prior art, the beneficial effects of the utility model are:
Three edge lengths of the present utility model can regulate, and the size of the triangle therefore constituted, shape can be varied as desired in；Side rod can be dismantled, and three limits that convenient demonstration does not meet Atria limit length of side character can not constitute a triangle, the angle at three angles of the convenient triangle reading composition of disk protractor。This utility model simple in construction, is convenient for carrying, and is especially suitable for teacher and says solving a triangle。
Accompanying drawing explanation
Fig. 1 is the structural representation of triangle demonstration teaching aid。
Fig. 2 is the structural representation of side rod reverse side in triangle demonstration teaching aid。
Fig. 3 is the exemplary plot that the demonstration of triangle demonstration teaching aid can be triangle。
Fig. 4 is the structural representation in side rod front in triangle demonstration teaching aid。
In figure: 1-side rod A, 2-side rod B, 3-side rod C, 4-disk protractor, 5-sleeve, 6-magnet A, 7-trip bolt, 8-magnet B, bar on the right of 9-, 10-left side bar。
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical scheme of this patent is described in more detail。
Referring to Fig. 1-4, a kind of triangle demonstration teaching aid, including side rod A1, side rod B2, side rod C3, disk protractor 4, sleeve 5, magnet A 6, trip bolt 7, magnet B 8, the right bar 9 and left side bar 10；Described side rod A1, side rod B2 and side rod C3 are made up of left side bar 10 and the right bar 9；Being internally hollow of described left side bar 10, front is provided with disk protractor 4, disk protractor 4 conveniently reads the number of degrees at Atria the angle being spliced into, and reverse side is provided with sleeve 5, magnet A 6 and trip bolt 7, and magnet A is positioned at bottom sleeve 5；Described disk protractor 4 is fixedly mounted on left side bar 10；Described magnet A 6 is fixed on bottom sleeve 5, simultaneously the equal diameters of the diameter of magnet A 6 and sleeve 5；Described sleeve 5 is positioned at the high order end of left side bar 10；Described trip bolt 7 is positioned at the low order end of left side bar 10, and the surfaces of revolution of trip bolt 7 is matsurface simultaneously, it is simple to user rotates trip bolt 7；Described the right bar 9 is provided with magnet B 8, and the right bar 9 can move inside left side bar 10, and trip bolt 7 is for fixing the right bar 10；Described magnet B 8 is positioned at the low order end of the right bar 9；Matched in clearance is adopted between described magnet B 8 and sleeve 5；Graduation mark, the convenient length adjusted and read side rod are all carved with in the front of described side rod A1, side rod B2 and side rod C3；Described side rod A1, side rod B2 and side rod C3 are individualisms, by magnet A 6, magnet B 8 and sleeve 5 during demonstration, are coupled together by three side rods。
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, moreover it is possible to make a variety of changes under the premise without departing from this patent objective。
Claims (4)
1. a triangle demonstration teaching aid, including side rod A, side rod B, side rod C, disk protractor, sleeve, magnet A, trip bolt, magnet B, the right bar and left side bar；It is characterized in that, described side rod A, side rod B and side rod C are made up of left side bar and the right bar；Being internally hollow of described left side bar, front is provided with disk protractor, reverse side is provided with sleeve, magnet A and trip bolt, and magnet A is positioned at sleeve bottom；Described disk protractor is fixedly mounted on the bar of the left side；Described magnet A is fixed on sleeve bottom, simultaneously the equal diameters of the diameter of magnet A and sleeve；Described sleeve is positioned at the high order end of left side bar；Described trip bolt is positioned at the low order end of left side bar, and the surfaces of revolution of trip bolt is matsurface simultaneously；Described the right bar is provided with magnet B；Described magnet B is positioned at the low order end of the right bar；Matched in clearance is adopted between described magnet B and sleeve。
2. triangle demonstration teaching aid according to claim 1, it is characterised in that graduation mark is all carved with in the front of described side rod A, side rod B and side rod C。
3. triangle demonstration teaching aid according to claim 1, it is characterised in that described side rod A, side rod B and side rod C are individualisms。
4. triangle demonstration teaching aid according to claim 1, it is characterised in that described side rod A, side rod B and side rod C all can regulate length。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521115990.XU CN205334825U (en) | 2015-12-29 | 2015-12-29 | Triangle -shaped demonstrates teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521115990.XU CN205334825U (en) | 2015-12-29 | 2015-12-29 | Triangle -shaped demonstrates teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205334825U true CN205334825U (en) | 2016-06-22 |
Family
ID=56312342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521115990.XU Expired - Fee Related CN205334825U (en) | 2015-12-29 | 2015-12-29 | Triangle -shaped demonstrates teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205334825U (en) |
-
2015
- 2015-12-29 CN CN201521115990.XU patent/CN205334825U/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: 20160622 Termination date: 20161229 |