CN204894892U - Multi -functional how much special compasses chis of drawing - Google Patents
Multi -functional how much special compasses chis of drawing Download PDFInfo
- Publication number
- CN204894892U CN204894892U CN201520571409.9U CN201520571409U CN204894892U CN 204894892 U CN204894892 U CN 204894892U CN 201520571409 U CN201520571409 U CN 201520571409U CN 204894892 U CN204894892 U CN 204894892U
- Authority
- CN
- China
- Prior art keywords
- ruler
- protractor
- slide rail
- square groove
- functional
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- 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 relates to a teaching aid specifically is a multi -functional how much special compasses chis of drawing. Including ruler I (1), ruler II (2) and setting are in I (1) inboard protractor (3) on the ruler, ruler I (1), ruler II (2) be equipped with protractor (3) through pivot (5) swing joint, I (1) the one end inboard that is close to fixed handle (4) on its ruler, I (1) free end on the ruler be equipped with sucking disc (6), II (2) free ends on the ruler are equipped with painting brush device (7), and ruler I (1) is gone up and is fixed with square groove slide rail (8) through the nut, is equipped with slider (9) be connected with square groove slide rail (8) cooperation on the ruler II (2). Its beneficial effect lies in: simple structure, multiple functional replaces the thimble, fixes stabilizing through the sucking disc, adopt the square groove slide rail to fix two angles between the landing leg simultaneously.
Description
Technical field
The utility model relates to the technical field of teaching aid, is specially a kind of multi-functional Geometric figure drawing special compasses chi.
Background technology
In the mathematical education of senior middle school, need the angle of drawing various geometric figure and various angle.Teacher is in teaching process, when use amount hornwork carries out the measurement of angle and draws, student is often made clearly not observe, especially the student sat in the back row, have impact on the study of student like this, and the drawing appliance that math teacher uses class hour has ruler and protractor etc. a lot, the function singleness of these instruments, as ruler can only draw straight line, protractor can only take measurement of an angle, so teacher needs ceaselessly to change teaching aid when drawing, affect mapping speed, reduce efficiency of teaching, use inconvenience, and the compass foot of compasses easily stabs student in carrying process, abnormally dangerous.Application number is the utility model patent of 201320830352.0, it discloses a kind of teaching apparatus for mathematics, solve problem described above, but it is by the support of thimble as mapping fixing point, its teacher and student can fix instability when drawing, and arbitrarily move, affect plotting quality and quality of instruction; And when this teaching apparatus for mathematics teacher or student two hand respectively hold a supporting leg of compasses, because the damping between two supporting legs is large not, its angle easily changes, when making mapping, radius can change, impact mapping and quality of instruction.Therefore for this problem, it is simple, multiple functional that we have developed a kind of structure, substitutes thimble by sucker, adopts square groove slide rail to fix the multi-functional Geometric figure drawing special compasses chi of the angle between two supporting legs, its easy to use, fixing-stable simultaneously.
Utility model content
The purpose of this utility model is for above-described problems of the prior art, there is provided a kind of structure simple, multiple functional, thimble is substituted by sucker, adopt square groove slide rail to fix the multi-functional Geometric figure drawing special compasses chi of the angle between two supporting legs, its easy to use, fixing-stable simultaneously.
In order to realize described object, the utility model specifically adopts following technical scheme:
A kind of multi-functional Geometric figure drawing special compasses chi, comprises ruler I 1, ruler II 2 and the protractor 3 be arranged on inside ruler I 1.Described ruler I 1, ruler II 2 are flexibly connected by rotating shaft 5, and its ruler I 1 is provided with protractor 3 inside one end of fixed handle 4; It is characterized in that: described ruler I 1 free end is provided with sucker 6, and ruler II 2 free end is provided with paintbrush device 7; And ruler I 1 is fixed with square groove slide rail 8 by nut, ruler II 2 is provided with the slide block 9 be connected with square groove slide rail 8.
Described square groove slide rail 8 surface is provided with scale.
Curve ruler 12 is provided with outside described ruler II 2.
Described ruler I 1, ruler II 2, protractor 3 are equipped with polygonal hole.
Described ruler I 1 is integral type structure with protractor 3, and the trailing flank of protractor 3 is provided with groove 10, and described fixed handle 4 is arranged in groove 10.
The surface of described protractor 3 is provided with hand 11.
A kind of multi-functional Geometric figure drawing special compasses chi of the utility model, described ruler I 1 free end is provided with sucker 6, and ruler II 2 free end is provided with paintbrush device 7; And ruler I 1 is fixed with square groove slide rail 8 by nut, ruler II 2 is provided with the slide block 9 be connected with square groove slide rail 8, it substitutes thimble by sucker, employing square groove slide rail 8 fixes the angle between two rulers I 1, ruler II 2 simultaneously, add the damping between two rulers I 1 serving as compasses supporting leg, ruler II 2, make the angle not malleable between two supporting legs, during mapping, radius can not change, and improves mapping and quality of instruction.
Compared with prior art, the beneficial effects of the utility model are: one, described ruler I 1 free end is provided with sucker 6, it substitutes thimble by sucker, employing square groove slide rail 8 fixes the angle between two rulers I 1, ruler II 2 simultaneously, add the damping between two rulers I 1 serving as compasses supporting leg, ruler II 2, fixing firm, make the angle not malleable between two supporting legs, during mapping, radius can not change, and improves mapping and quality of instruction; Two, be provided with curve ruler 12 outside described ruler II 2, and ruler I 1, ruler II 2, protractor 3 are equipped with polygonal hole, multiple functional, easy to use; The surface of three, described protractor 3 is provided with hand 11, when conveniently mapping, and the taking and placing of this utility model and fixing.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is rearview of the present utility model.
In figure: ruler I 1, ruler II 2, protractor 3, fixed handle 4, rotating shaft 5, sucker 6, paintbrush device 7, square groove slide rail 8, slide block 9, groove 10, hand 11, curve ruler 12.
Detailed description of the invention
Below in conjunction with accompanying drawing 1, accompanying drawing 2, structure of the present utility model and beneficial effect thereof are further illustrated.
Embodiment 1
A kind of multi-functional Geometric figure drawing special compasses chi, as shown in Figure 1, comprises ruler I 1, ruler II 2 and the protractor 3 be arranged on inside ruler I 1.Described ruler I 1, ruler II 2 are flexibly connected by rotating shaft 5, and its ruler I 1 is provided with protractor 3 inside one end of fixed handle 4.
Described ruler I 1 free end is provided with sucker 6, and ruler II 2 free end is provided with paintbrush device 7; And ruler I 1 is fixed with square groove slide rail 8 by nut, ruler II 2 is provided with the slide block 9 be connected with square groove slide rail 8.
Described square groove slide rail 8 surface is provided with scale.
As shown in Figure 1, described ruler I 1, ruler II 2, protractor 3 being equipped with polygonal hole, when needing polygon shown on picture ruler I 1, ruler II 2, protractor 3, being completed by it.
As shown in Figure 2, the trailing flank of described protractor 3 is provided with groove 10, when not using fixed handle 4, is rotated by fixed handle 4, and puts into groove 10.
Be provided with curve ruler 12 outside described ruler II 2, when needs picture wave lines, completed by curve ruler 12, simple to operate, easy to use.
When drawing angle, first on book or blackboard, straight line is drawn, described fixed handle 4 is placed in groove 10, then the zero line straight line coincidence therewith of the protractor 3 arranged inside ruler I 1 is made, then move ruler II 2, required angle place will be determined inside it, then along the edge of ruler II 2, finish the Article 2 limit of angle, it is convenient and simple for operation.
Embodiment 2
A kind of multi-functional Geometric figure drawing special compasses chi, its concrete structure as described in Example 1.
Draw circular arc or bowlder, first taken out in groove 10 by described fixed handle 4, and make fixed handle 4 and the horizontal plane that will map, then adjusting slider 9 does radius of a circle place to needs, is then adsorbed in blackboard or operation by sucker 6, carries out picture circle; It is absorbed and fixed at the optional position of blackboard or homework book with the form of sucker 6, not only not easily slide, and the paper of blackboard face coat and homework book can not be poked, improve plotting quality and quality of instruction, this teaching aid structure is simple, reasonable in design, easy to use, the burden of teacher and student can be alleviated, improve efficiency of teaching and plotting quality.
The surface of described protractor 3 is provided with hand 11, when conveniently mapping, and the taking and placing of this utility model and fixing.
Claims (6)
1. a multi-functional Geometric figure drawing special compasses chi, comprises ruler I (1), ruler II (2) and the protractor (3) be arranged on inside ruler I (1); Described ruler I (1), ruler II (2) are flexibly connected by rotating shaft (5), and its ruler I (1) is provided with protractor (3) inside one end of fixed handle (4); It is characterized in that: described ruler I (1) free end is provided with sucker (6), and ruler II (2) free end is provided with paintbrush device (7); And ruler I (1) is fixed with square groove slide rail (8) by nut, ruler II (2) is provided with the slide block (9) be connected with square groove slide rail (8).
2. a kind of multi-functional Geometric figure drawing special compasses chi according to claim 1, is characterized in that: described square groove slide rail (8) surface is provided with scale.
3. a kind of multi-functional Geometric figure drawing special compasses chi according to claim 1, is characterized in that: described ruler II (2) outside is provided with curve ruler (12).
4. a kind of multi-functional Geometric figure drawing special compasses chi according to claim 1 or 3, is characterized in that: (3) are equipped with polygonal hole for described ruler I (1), ruler II (2), protractor.
5. a kind of multi-functional Geometric figure drawing special compasses chi according to claim 1, it is characterized in that: described ruler I (1) is integral type structure with protractor (3), and the trailing flank of protractor (3) is provided with groove (10), and described fixed handle (4) is arranged in groove (10).
6. a kind of multi-functional Geometric figure drawing special compasses chi according to claim 1 or 5, is characterized in that: the surface of described protractor (3) is provided with hand (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571409.9U CN204894892U (en) | 2015-08-03 | 2015-08-03 | Multi -functional how much special compasses chis of drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571409.9U CN204894892U (en) | 2015-08-03 | 2015-08-03 | Multi -functional how much special compasses chis of drawing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204894892U true CN204894892U (en) | 2015-12-23 |
Family
ID=54917100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520571409.9U Expired - Fee Related CN204894892U (en) | 2015-08-03 | 2015-08-03 | Multi -functional how much special compasses chis of drawing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204894892U (en) |
-
2015
- 2015-08-03 CN CN201520571409.9U patent/CN204894892U/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: 20151223 Termination date: 20160803 |