CN203267577U - Oval drawing board for teaching - Google Patents
Oval drawing board for teaching Download PDFInfo
- Publication number
- CN203267577U CN203267577U CN 201320292226 CN201320292226U CN203267577U CN 203267577 U CN203267577 U CN 203267577U CN 201320292226 CN201320292226 CN 201320292226 CN 201320292226 U CN201320292226 U CN 201320292226U CN 203267577 U CN203267577 U CN 203267577U
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- CN
- China
- Prior art keywords
- oval
- drawing board
- board body
- short
- teaching
- 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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Abstract
The utility model discloses an oval drawing board for teaching. The oval drawing board for teaching comprises an oval drawing board body, wherein a through hole is formed in the middle of the oval drawing board body, a short ruler is fixedly connected between the two inner wall in the short axis direction inside the through hole, a long ruler is hinged to the middle of the short ruler, a plurality of oval gaps are formed in the oval drawing board body at intervals, the short ruler is fixedly connected to the through hole in the middle of the oval drawing board body, the long ruler is hinged to the short ruler, the short ruler and the long ruler can assist measurement or drawing, and the oval gaps formed in the oval drawing board body at intervals can assist in drawing ovals of different diameters; the diameter of the oval gaps is greater than the maximum diameter of chalk, so that the chalk extends into the gaps conveniently to be used for drawing; magnets at the two end portions of a hinged shaft can assist the drawing board body in being attracted on a blackboard, so that the labor intensity of teachers is relieved. The oval drawing board for teaching is simple in structure and convenient to use.
Description
Technical field
The utility model relates to the oval drawing board of a kind of teaching.
Background technology
Math teacher need to be drawn various figures so that aided education on blackboard in teaching process, existing a lot of teaching accessory can assist teacher to draw various figures on blackboard, can assist picture triangle, form and circle as set square, ruler, compasses etc., but ellipse also do not have suitable aid at present.
The utility model content
The technical problems to be solved in the utility model is for defects, and a kind of oval drawing board of the oval-shaped teaching of picture that facilitates is provided.
In order to solve the problems of the technologies described above, the utility model provides a kind of teaching with following structure oval drawing board, comprise oval drawing board body, its design feature is that the middle part of described oval drawing board body is provided with through hole, be connected with short chi between short-axis direction two inwalls in described through hole, the middle part of described short chi is hinged with long chi, is interval with a plurality of oval spaces on described oval drawing board body.
The diameter in described a plurality of oval spaces diminishes to its inside gradually from oval drawing board body exterior.
The width in described oval space is greater than the maximum gauge of chalk.
Be articulated as one by hinge between described short chi and long chi, the both ends of described hinge are provided with respectively magnet.
Adopt the teaching of such scheme compared with prior art to have the following advantages with oval drawing board: to be connected with short chi in the through hole in the middle part of oval drawing board body, be hinged with long chi on short chi, but short chi and long chi subsidiary or mapping, the oval space that on oval drawing board body, the interval arranges can be assisted and draw the different ellipse of diameter; Oval space facilitates chalk to extend in the space and draws greater than the maximum gauge of chalk; The magnet at hinge both ends can assist the drawing board ontological adsorption theory to blackboard, alleviates teacher's labour intensity, and the utility model is simple in structure, and is easy to use.
Description of drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 be in Fig. 1 A-A to cutaway view.
The specific embodiment
As depicted in figs. 1 and 2, this teaching comprises oval drawing board body 1 with oval drawing board, the middle part of oval drawing board body 1 is provided with through hole 2, be connected with short chi 3 between interior short-axis direction two inwalls of through hole 2, the middle part of short chi 3 is hinged with long chi 4, be articulated as one by hinge 6 between short chi 3 and long chi 4, the lower surface of long chi 4 exceeds the upper surface of oval drawing board body 1, therefore long chi 4 can free indexing so that measure or setting-out work.The both ends of hinge 6 are provided with respectively magnet 7, oval drawing board body 1 need to keep flat on blackboard when using, for alleviating teacher's labour intensity, can oval drawing board body 1 be adsorbed onto on blackboard by magnet 7, therefore blackboard needs to add iron powder or at the back of blackboard, iron plate is installed in manufacture process, is convenient to the use of magnet 7.Be interval with a plurality of oval spaces 5 on described oval drawing board body 1, the diameter in a plurality of oval spaces 5 diminishes to its inside gradually from oval drawing board body 1 outside, the width in oval space 5 is greater than the maximum gauge of chalk, facilitate chalk to be inserted into and carry out picture sired results work in oval space 5, on oval drawing board body 1, a plurality of oval spaces 5 can be set, interval 5cm between every two oval spaces 5 makes oval drawing board body 1 can draw the different ellipse of a plurality of diameters.
During use, oval drawing board body 1 is kept flat on blackboard, the magnet 7 of hinge 6 ends can make oval drawing board body 1 integral body be adsorbed on blackboard, alleviate teacher's labour intensity, oval space 5 on drawing board body 1 oval according to required oval size Selection, chalk is placed in oval space 5 carries out the picture circle along its track, the long chi 4 at through hole 2 middle parts and short chi 3 can carry out subsidiary, because long chi 4 is hinged on short chi 3, therefore the angle of long chi 4 is adjustable, and long chi 4 can be measured or Oblique line drawing under the motionless state of oval drawing board body 1.
The above is specific constructive form of the present utility model; the utility model is not restricted to the described embodiments; the art personnel, replace all in protection domain of the present utility model based on equivalent variations and the parts of concrete structure on the utility model.
Claims (4)
1. oval drawing board of teaching, comprise oval drawing board body (1), it is characterized in that: the middle part of described oval drawing board body (1) is provided with through hole (2), be connected with short chi (3) between interior short-axis direction two inwalls of described through hole (2), the middle part of described short chi (3) is hinged with long chi (4), is interval with a plurality of oval spaces (5) on described oval drawing board body (1).
2. the oval drawing board of teaching according to claim 1 is characterized in that: the diameter in described a plurality of oval spaces (5) diminishes to its inside gradually from oval drawing board body (1) is outside.
3. the oval drawing board of teaching according to claim 2, it is characterized in that: the width in described oval space (5) is greater than the maximum gauge of chalk.
4. the oval drawing board of teaching according to claim 1, it is characterized in that: be articulated as one by hinge (6) between described short chi (3) and long chi (4), the both ends of described hinge (6) are provided with respectively magnet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320292226 CN203267577U (en) | 2013-05-27 | 2013-05-27 | Oval drawing board for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320292226 CN203267577U (en) | 2013-05-27 | 2013-05-27 | Oval drawing board for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203267577U true CN203267577U (en) | 2013-11-06 |
Family
ID=49498052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320292226 Expired - Fee Related CN203267577U (en) | 2013-05-27 | 2013-05-27 | Oval drawing board for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203267577U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097569A (en) * | 2017-06-20 | 2017-08-29 | 屈雷涛 | One kind teaching picture circle and oval apparatus |
-
2013
- 2013-05-27 CN CN 201320292226 patent/CN203267577U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097569A (en) * | 2017-06-20 | 2017-08-29 | 屈雷涛 | One kind teaching picture circle and oval apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140527 |