CN204414933U - A kind of magnetic, multi-functional geometry teaching aid - Google Patents
A kind of magnetic, multi-functional geometry teaching aid Download PDFInfo
- Publication number
- CN204414933U CN204414933U CN201520085255.2U CN201520085255U CN204414933U CN 204414933 U CN204414933 U CN 204414933U CN 201520085255 U CN201520085255 U CN 201520085255U CN 204414933 U CN204414933 U CN 204414933U
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- China
- Prior art keywords
- compass leg
- teaching aid
- scale
- magnetic
- fixed
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of magnetic, multi-functional geometry teaching aid, it comprises the first compass leg and the second compass leg that are hinged by the first rotating shaft, this first rotating shaft place is provided with a protractor angle scale, this first compass leg, second compass leg is equipped with scale, the end of this first compass leg is provided with chalk adjusting device, the end of this second compass leg is provided with center of circle positioning device, this first compass leg is hinged with Radius engineer's scale, on this second compass leg, this radius scale chi corresponding is provided with Radius engineer's scale fixture, described first compass leg, the back side of the second compass leg is equipped with the fixed magnet being convenient to be fixed to by this geometry teaching aid on magnet board.The utility model structure is simple, by ingenious rational design, a teaching aid is integrated with the function of compasses, protractor, set square and ruler, thus only need when imparting knowledge to students the teaching aid carrying, easy to use, the used time not can be adsorbed on blackboard edge, saves space, dais, reduces the working strength of teacher.
Description
Technical field
The utility model relates to teaching aid, particularly a kind of magnetic, multi-functional geometry teaching aid.
Background technology
At present, teacher is in mathematical education process, frequent use teaching aid is mapped on blackboard, especially in geometric construction presentation process, can use set square teaching aid, compass teaching aid, protractor teaching aid etc., these teaching aids compare dispersion, need change back and forth during mapping, waste valuable instructional blocks of time, and considerably increase the workload of teacher.And so many teaching aids are placed on dais, occupy limited space, are also not easy to taking of teaching aid, not neatly simultaneously.
Summary of the invention
The purpose of this utility model is, provides a kind of magnetic, multi-functional geometry teaching aid for the deficiencies in the prior art part.
The technical scheme that the utility model is adopted for achieving the above object is:
A kind of magnetic, multi-functional geometry teaching aid, it comprises the first compass leg and the second compass leg that are hinged by the first rotating shaft, this first rotating shaft place is provided with a protractor angle scale, this protractor angle scale is fixedly connected with the second compass leg, this first compass leg, second compass leg is equipped with scale, the end of this first compass leg is provided with chalk adjusting device, the end of this second compass leg is provided with center of circle positioning device, this first compass leg is hinged with Radius engineer's scale, on this second compass leg, this radius scale chi corresponding is provided with Radius engineer's scale fixture, described first compass leg, the back side of the second compass leg is equipped with the fixed magnet being convenient to be fixed to by this geometry teaching aid on magnet board.
Described chalk adjusting device is fixed on the transparent sleeve of the first compass leg end, and the wall of this transparent sleeve is provided with a set screw, and in this transparent sleeve, corresponding described set screw is provided with one for the sheet material of fixing chalk.
Described center of circle positioning device comprises the second rotating shaft being located at this second compass leg end, this second rotating shaft is provided with rotationally the phase magnet that is convenient to carry out location, the center of circle.
This second rotating shaft is provided with rotationally a phase magnet holder, described phase magnet is fixed on the bottom of this phase magnet holder.
Described sheet material is a shell fragment, and one end of this sheet material is fixed on the wall of this transparent sleeve, and the other end of this sheet material extends to the below of this set screw.
Described radius scale chi fixture is a clip, and this clip is fixed on the centre position of this second compass leg.
Described first compass leg is to the length of the chalk end be fixed thereon, equal to the length of the center of circle positioning device end be fixed thereon with this second compass leg, and described radius scale chi, radius scale chi fixture are located at the centre position of this length respectively.
Described radius scale chi is provided with scale.
Described transparent sleeve outer wall is provided with a set screw holder, and described set screw can be arranged to turn on this set screw holder, and the end of this set screw extend in this transparent sleeve.
Described first rotating shaft is also provided with one for regulating this first compass leg or the second compass leg to swing time elasticity adjusting nut.
The beneficial effects of the utility model are: the utility model structure is simple, by ingenious rational design, a teaching aid is integrated with the function of compasses, protractor, set square and ruler, thus only need when imparting knowledge to students the teaching aid carrying, and it is easy to use, the used time not can be adsorbed on blackboard edge, saves space, dais, reduces the working strength of teacher.
Below in conjunction with accompanying drawing and embodiment, the utility model is further illustrated.
Accompanying drawing explanation
Structural representation when Fig. 1 is the utility model front;
Structural representation when Fig. 2 is the utility model back side;
Fig. 3 is the structural representation of chalk adjusting device in the utility model.
Detailed description of the invention
Embodiment 1: as shown in Figure 1 to Figure 3, a kind of magnetic, multi-functional geometry of the utility model teaching aid, it comprises the first compass leg 2 and the second compass leg 3 be hinged by the first rotating shaft 1, this the first rotating shaft 1 place is provided with a protractor angle scale 4, this protractor angle scale 4 is fixedly connected with the second compass leg 3, this first compass leg 2, second compass leg 3 is equipped with scale, the end of this first compass leg 2 is provided with chalk adjusting device 5, the end of this second compass leg 3 is provided with center of circle positioning device 6, this first compass leg 2 is hinged with Radius engineer's scale 7, on this second compass leg 3, this radius scale chi 7 corresponding is provided with Radius engineer's scale fixture 8, described first compass leg 2, the back side of the second compass leg 3 is equipped with the fixed magnet 9 being convenient to be fixed to by this geometry teaching aid on magnet board.
Described chalk adjusting device 5 is fixed on the transparent sleeve 51 of the first compass leg 2 end, and the wall of this transparent sleeve 51 is provided with a set screw 52, and in this transparent sleeve 51, corresponding described set screw 52 is provided with one for the sheet material 53 of fixing chalk 10.
Described center of circle positioning device 6 comprises the second rotating shaft 61 being located at this second compass leg 3 end, this second rotating shaft 61 is provided with rotationally the phase magnet 62 that is convenient to carry out location, the center of circle.
This second rotating shaft 61 is provided with rotationally a phase magnet holder 63, described phase magnet 62 is fixed on the bottom of this phase magnet holder 63.
Described sheet material is a shell fragment, and one end of this sheet material is fixed on the wall of this transparent sleeve 51, and the other end of this sheet material extends to the below of this set screw 52.
Described radius scale chi fixture 8 is a clip, and this clip is fixed on the centre position of this second compass leg 3.
Described first compass leg 2 is to the length of chalk 10 end be fixed thereon, equal to the length of center of circle positioning device 6 end be fixed thereon with this second compass leg 3, described radius scale chi 7, radius scale chi fixture 8 are located at the centre position of this length respectively.
Described radius scale chi 7 is provided with scale.
Described transparent sleeve 51 outer wall is provided with a set screw holder 54, and described set screw 52 can be arranged to turn on this set screw holder 54, and the end of this set screw 52 extend in this transparent sleeve 51.
Described first rotating shaft 1 is also provided with one for regulating this first compass leg 2 or the second compass leg 3 to swing time elasticity adjusting nut 11.By this adjusting nut 11 of turn, thus elasticity when regulating the first compass leg 2 or the second compass leg 3 to swing, be convenient to the use of this magnetic, multi-functional geometry teaching aid.
When use the utility model product draws circle, by the center of circle positioning device 6 of the second compass leg 3 end near magnet board, phase magnet 62 is adsorbed on blackboard, thus the second compass leg 3 end is fixed, this second compass leg 3 can rotate by relative positioning magnet 62, thus can easily at blackboard upper drawing circle.When needing picture radius to be the bowlder of 2a, numerical value on radius scale chi 7 is found to be the scale place of a, radius scale chi fixture 8 correspond to this scale and is fixed by radius scale chi 7, according to the formula of similar triangles, with phase magnet 62 place for the center of circle, namely easily can make the circle that radius is 2a, efficient and convenient, a careless ordinary people can both draw circle that is attractive in appearance, that meet dimensional requirement.Draw bowlder unlike the traditional teaching aid of use, need first to mark the center of circle and 2a radius with ruler, then just map with compasses, complex steps, and need just can draw circle complete, attractive in appearance by certain experience.When needing the length adjusting chalk 10, twisting this set screw 52, sheet material is unclamped from chalk 10, after regulating the length of chalk 10, twisting set screw 52, makes sheet material compress chalk 10, is fixed by chalk 10.
When needs draw special angle time, first compass leg 2 or the second compass leg 3 are attached on magnet board, because the back side of this first compass leg 2 or the second compass leg 3 is equipped with fixed magnet 9, thus make the first compass leg 2 or the second compass leg 3 be absorbed and fixed on blackboard, the angle needed is selected according to protractor angle scale 4, adjust the angle between the first compass leg 2 and the second compass leg 3, the angle of needs can be drawn easily.
When mapping with set square, only need the angle between the first compass leg 2 and the second compass leg 3 to be adjusted to 30 degree, 45 degree, 60 degree or 90 degree.
In time not needing to use this geometry teaching aid, only need the side this geometry teaching aid being adsorbed on blackboard, do not affect the use of blackboard, limited space, dais need not be occupied again.
The utility model structure is simple, by ingenious rational design, a teaching aid is integrated with the function of compasses, protractor, set square and ruler, thus only need when imparting knowledge to students the teaching aid carrying, and it is easy to use, the used time not can be adsorbed on blackboard edge, saves space, dais, reduces the working strength of teacher.
The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model right change and modify, and all should belong to the covering scope of the utility model claim.
Claims (10)
1. a magnetic, multi-functional geometry teaching aid, it is characterized in that: it comprises the first compass leg and the second compass leg that are hinged by the first rotating shaft, this rotating shaft place is also provided with a protractor angle scale, this protractor angle scale is fixedly connected with the second compass leg, this first compass leg, second compass leg is equipped with scale, the end of this first compass leg is provided with chalk adjusting device, the end of this second compass leg is provided with center of circle positioning device, this first compass leg is hinged with Radius engineer's scale, on this second compass leg, this radius scale chi corresponding is provided with Radius engineer's scale fixture, described first compass leg, the back side of the second compass leg is equipped with the fixed magnet being convenient to be fixed to by this geometry teaching aid on magnet board.
2. magnetic, multi-functional geometry teaching aid according to claim 1, it is characterized in that: described chalk adjusting device is fixed on the transparent sleeve of the first compass leg end, the wall of this transparent sleeve is provided with a set screw, and in this transparent sleeve, corresponding described set screw is provided with one for the sheet material of fixing chalk.
3. magnetic, multi-functional geometry teaching aid according to claim 1, is characterized in that: described center of circle positioning device comprises the second rotating shaft being located at this second compass leg end, this second rotating shaft is provided with rotationally the phase magnet that is convenient to carry out location, the center of circle.
4. magnetic, multi-functional geometry teaching aid according to claim 3, is characterized in that: this second rotating shaft is provided with rotationally a phase magnet holder, described phase magnet is fixed on the bottom of this phase magnet holder.
5. magnetic, multi-functional geometry teaching aid according to claim 2, it is characterized in that: described sheet material is a shell fragment, one end of this sheet material is fixed on the wall of this transparent sleeve, and the other end of this sheet material extends to the below of this set screw.
6. magnetic, multi-functional geometry teaching aid according to claim 1, is characterized in that: described radius scale chi fixture is a clip, and this clip is fixed on the centre position of this second compass leg.
7. magnetic, multi-functional geometry teaching aid according to claim 1, it is characterized in that, described first compass leg is to the length of the chalk end be fixed thereon, equal to the length of the center of circle positioning device end be fixed thereon with this second compass leg, described radius scale chi, radius scale chi fixture are located at the centre position of this length respectively.
8. magnetic, multi-functional geometry teaching aid according to claim 1, is characterized in that: described radius scale chi is provided with scale.
9. magnetic, multi-functional geometry teaching aid according to claim 2, it is characterized in that: described transparent sleeve outer wall is provided with a set screw holder, described set screw can be arranged to turn on this set screw holder, and the end of this set screw extend in this transparent sleeve.
10. magnetic, multi-functional geometry teaching aid according to claim 1, is characterized in that: described first rotating shaft is also provided with one for regulating this first compass leg or the second compass leg to swing time elasticity adjusting nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520085255.2U CN204414933U (en) | 2015-02-06 | 2015-02-06 | A kind of magnetic, multi-functional geometry teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520085255.2U CN204414933U (en) | 2015-02-06 | 2015-02-06 | A kind of magnetic, multi-functional geometry teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204414933U true CN204414933U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520085255.2U Expired - Fee Related CN204414933U (en) | 2015-02-06 | 2015-02-06 | A kind of magnetic, multi-functional geometry teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204414933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104626827A (en) * | 2015-02-06 | 2015-05-20 | 黄利辉 | Magnetic multifunctional geometry teaching aid |
-
2015
- 2015-02-06 CN CN201520085255.2U patent/CN204414933U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104626827A (en) * | 2015-02-06 | 2015-05-20 | 黄利辉 | Magnetic multifunctional geometry 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20180206 |