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
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 China
 Prior art keywords
 protractor
 ruler
 initial point
 auxiliary scale
 deep
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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 semicircular 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 deepslotted chip breaker, ruler has vertical bar shaped groove, deepslotted 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 deepslotted 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 differentdiameter, oneobjectmanypurposes, 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 semicircular 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 righthand 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 deepslotted chip breaker, the cross section of described deepslotted chip breaker is convex shape, the upper end wall of described ruler has vertical bar shaped groove, described deepslotted 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 deepslotted 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 differentdiameter, oneobjectmanypurposes, 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 BB to cross section structure schematic diagram.
In figure, 1 protractor, 2 rulers, 3 auxiliary scales, 4 deepslotted chip breakers, 5 vertical bar shaped grooves, 6 arc shaped sliders, 7 plectanes, 8 semicircular 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 semicircular 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 righthand 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 deepslotted chip breaker 4, the cross section of deepslotted chip breaker 4 is convex shape, the upper end wall of ruler 2 has vertical bar shaped groove 5, deepslotted chip breaker 4 is connected with vertical bar shaped groove 5, the righthand member of deepslotted 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 endface edge is concordant, the left end of auxiliary scale 3 is provided with arc shaped slider 6, arc shaped slider 6 is positioned at deepslotted 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 differentdiameter, 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 semicircular 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 righthand 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 deepslotted chip breaker (4), the cross section of described deepslotted chip breaker (4) is convex shape, the upper end wall of described ruler (2) has vertical bar shaped groove (5), described deepslotted 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 deepslotted 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)  20150227  20150227  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)  20150227  20150227  A kind of math teacher Multifunctional drawing tool used for teaching 
Publications (1)
Publication Number  Publication Date 

CN204488313U true CN204488313U (en)  20150722 
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CN201520117899.5U Expired  Fee Related CN204488313U (en)  20150227  20150227  A kind of math teacher Multifunctional drawing tool used for teaching 
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CN (1)  CN204488313U (en) 

2015
 20150227 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 nonpayment of annual fee 
Granted publication date: 20150722 Termination date: 20160227 

CF01  Termination of patent right due to nonpayment of annual fee 