CN204488313U - A kind of math teacher Multifunctional drawing tool used for teaching - Google Patents
A kind of math teacher Multifunctional drawing tool used for teaching Download PDFInfo
- Publication number
- CN204488313U CN204488313U CN201520117899.5U CN201520117899U CN204488313U CN 204488313 U CN204488313 U CN 204488313U CN 201520117899 U CN201520117899 U CN 201520117899U CN 204488313 U CN204488313 U CN 204488313U
- Authority
- CN
- China
- Prior art keywords
- protractor
- ruler
- initial point
- auxiliary scale
- deep
- 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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- 235000012489 doughnuts Nutrition 0.000 claims abstract description 13
- 230000002093 peripheral Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Abstract
The utility model relates to a kind of teaching aid, particularly a kind of math teacher Multifunctional drawing tool used for teaching.It comprises ruler, plectane and semi-circular plate, hollow out in the middle of plectane, hollow part has some donuts, donut is connected with protractor, protractor is connected with ruler, the initial point of the extended line throughput hornwork of the upper end of ruler, the peripheral wall of protractor has deep-slotted chip breaker, ruler has vertical bar shaped groove, deep-slotted chip breaker is connected with vertical bar shaped groove, auxiliary scale is provided with in vertical bar shaped groove, the initial point of the extended line throughput hornwork of the upper end of auxiliary scale, the left end of auxiliary scale is provided with arc shaped slider, described arc shaped slider is positioned at deep-slotted chip breaker, described auxiliary scale can move in a circle with the initial point of protractor.Ruler and protractor combine by the utility model, have again the help of auxiliary scale, portray straight line, can also portray the angle of known angle by measuring angle, can also draw the circle of different-diameter, one-object-many-purposes, use simple, and easy to carry.
Description
(1) technical field
The utility model relates to a kind of teaching aid, particularly a kind of math teacher Multifunctional drawing tool used for teaching.
(2) background technology
Although science and technology is flourishing at present, a lot of school all uses multimedia teaching, but some aspect still needs to use original educational aid, such as draw, taught by doing and illustrating by teacher with regard to best, draw to children's impression intuitively by the scene of teacher, reinforcement understands, conventional drawing tools comprises ruler, set square, protractor etc., and they are independent existence separately, brings inconvenience to carrying of teachers.
(3) summary of the invention
The utility model, in order to make up the defect of prior art, provides a kind of math teacher Multifunctional drawing tool used for teaching easy to carry.
The utility model is achieved by the following technical solution:
A kind of math teacher Multifunctional drawing tool used for teaching, it is characterized in that: comprise ruler, plectane, described plectane is made into integration by protractor and semi-circular plate, circular openwork part is had in the middle of described plectane, the described center of circle of circular openwork part overlaps with the initial point of protractor, some donuts are provided with in described circular openwork part, the center of circle of these donuts overlaps with the initial point of protractor, wherein minimum annulus can only hold chalk and insert, described donut is connected with protractor by connecting rod, the right-hand member of described protractor is fixedly connected with the left end of ruler, the initial point of the extended line throughput hornwork of the upper end of described ruler, the arcuate perimeter wall of described protractor has deep-slotted chip breaker, the cross section of described deep-slotted chip breaker is convex shape, the upper end wall of described ruler has vertical bar shaped groove, described deep-slotted chip breaker is connected with vertical bar shaped groove, auxiliary scale is provided with in described vertical bar shaped groove, the initial point of the extended line throughput hornwork of the upper end of described auxiliary scale, the left end of described auxiliary scale is provided with arc shaped slider, described arc shaped slider is positioned at deep-slotted chip breaker, described auxiliary scale can move in a circle with the initial point of protractor.
The beneficial effects of the utility model are:
Ruler and protractor combine by the utility model, have again the help of auxiliary scale, portray straight line, can also portray the angle of known angle by measuring angle, can also draw the circle of different-diameter, one-object-many-purposes, use simple, and easy to carry.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is plan structure schematic diagram of the present utility model;
Fig. 2 be in Fig. 1 A to the cross section structure schematic diagram of arc groove;
Fig. 3 be in Fig. 1 B-B to cross section structure schematic diagram.
In figure, 1 protractor, 2 rulers, 3 auxiliary scales, 4 deep-slotted chip breakers, 5 vertical bar shaped grooves, 6 arc shaped sliders, 7 plectanes, 8 semi-circular plates, 9 circular openwork parts, 10 donuts, 11 connecting rods.
(5) detailed description of the invention
Accompanying drawing is specific embodiment of the utility model.As Fig. 1, Fig. 2, shown in Fig. 3, this kind of math teacher Multifunctional drawing tool used for teaching, comprise ruler 2, plectane 7, plectane 7 is made into integration by protractor 1 and semi-circular plate 8, circular openwork part 9 is had in the middle of plectane 8, the center of circle of circular openwork part 9 overlaps with the initial point of protractor 1, some donuts 10 are provided with in circular openwork part 9, the center of circle of these donuts 10 overlaps with the initial point of protractor 1, wherein minimum annulus can only hold chalk and insert, donut 10 is connected with protractor 1 by connecting rod 11, the right-hand member of protractor 1 is fixedly connected with the left end of ruler 2, preferably be made into integration, the upper end of ruler 2, namely there is the initial point of the extended line throughput hornwork 1 on one side of graduation mark, the arcuate perimeter wall of protractor 1 has deep-slotted chip breaker 4, the cross section of deep-slotted chip breaker 4 is convex shape, the upper end wall of ruler 2 has vertical bar shaped groove 5, deep-slotted chip breaker 4 is connected with vertical bar shaped groove 5, the right-hand member of deep-slotted chip breaker 4 at least extends to downwards bottom vertical bar shaped groove 5, auxiliary scale 3 is provided with in vertical bar shaped groove 5, the initial point of the extended line throughput hornwork 1 of the upper end of described auxiliary scale 3, that is when auxiliary scale 3 is positioned at vertical bar shaped groove 5, their upper end-face edge is concordant, the left end of auxiliary scale 3 is provided with arc shaped slider 6, arc shaped slider 6 is positioned at deep-slotted chip breaker 4, the center of circle of the arc of arc shaped slider 6 overlaps with the initial point of protractor 1, auxiliary scale 3 can move in a circle with the initial point of protractor 1.
The utility model can draw straight line, angle, angulation angle, draw the angle of known angle, draw the circle of different-diameter, draw bowlder, can by the utility model by round with drawing with coloured chalk on blackboard, also piece of chalk can be inserted in minimum annulus as the center of circle, another chalk is placed on the intersection of other donuts and connecting rod, pushes the utility model with another chalk and draw circle.
Except technical characteristic described in description, all the other technical characteristics are those skilled in the art's known technology.
Claims (1)
1. a math teacher Multifunctional drawing tool used for teaching, it is characterized in that: comprise ruler (2), plectane (7), described plectane (7) is made into integration by protractor (1) and semi-circular plate (8), circular openwork part (9) is had in the middle of described plectane (7), the center of circle of described circular openwork part (9) overlaps with the initial point of protractor (1), some donuts (10) are provided with in described circular openwork part (9), the center of circle of these donuts (10) overlaps with the initial point of protractor (1), wherein minimum annulus can only hold chalk and insert, described donut (10) is connected with protractor (1) by connecting rod (11), the right-hand member of described protractor (1) is fixedly connected with the left end of ruler (2), the initial point of the extended line throughput hornwork (1) of the upper end of described ruler (2), the arcuate perimeter wall of described protractor (1) has deep-slotted chip breaker (4), the cross section of described deep-slotted chip breaker (4) is convex shape, the upper end wall of described ruler (2) has vertical bar shaped groove (5), described deep-slotted chip breaker (4) is connected with vertical bar shaped groove (5), auxiliary scale (3) is provided with in described vertical bar shaped groove (5), the initial point of the extended line throughput hornwork (1) of the upper end of described auxiliary scale (3), the left end of described auxiliary scale (3) is provided with arc shaped slider (6), described arc shaped slider (6) is positioned at deep-slotted chip breaker (4), described auxiliary scale (3) can move in a circle with the initial point of protractor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520117899.5U CN204488313U (en) | 2015-02-27 | 2015-02-27 | A kind of math teacher Multifunctional drawing tool used for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520117899.5U CN204488313U (en) | 2015-02-27 | 2015-02-27 | A kind of math teacher Multifunctional drawing tool used for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204488313U true CN204488313U (en) | 2015-07-22 |
Family
ID=53567603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520117899.5U Expired - Fee Related CN204488313U (en) | 2015-02-27 | 2015-02-27 | A kind of math teacher Multifunctional drawing tool used for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204488313U (en) |
-
2015
- 2015-02-27 CN CN201520117899.5U patent/CN204488313U/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 |
Granted publication date: 20150722 Termination date: 20160227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |