CN203739488U  Teaching ruler  Google Patents
Teaching ruler Download PDFInfo
 Publication number
 CN203739488U CN203739488U CN201320706142.0U CN201320706142U CN203739488U CN 203739488 U CN203739488 U CN 203739488U CN 201320706142 U CN201320706142 U CN 201320706142U CN 203739488 U CN203739488 U CN 203739488U
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 CN
 China
 Prior art keywords
 hole
 teaching ruler
 edge
 angle
 teaching
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Abstract
The utility model discloses a teaching ruler. The whole ruler is a protractor. A through hole of a first right angle is formed in the position where a first edge and a second edge intersect at 90 degrees, and the angle between the first edge and the straight edge of the teaching ruler is 45 degrees; a second right angle is formed in the position where a third edge and a fourth edge of the through hole intersect at 60 degrees or 120 degrees, and the angle between the third edge and the straight edge is 60 degrees. According to the utility model, as the teaching ruler serves as the protractor, an angle can be drawn and measured; the first edge, the second edge and the straight edge are drawn with a piece of chalk, and the drawn edges are completed with the teaching ruler so as to form an isosceles right triangle; the third edge, the fourth edge and the straight edge are drawn with the piece of chalk, and the drawn edges are completed with the teaching ruler so as to form a right triangle with a 30 degrees' angle and a 60 degrees' angle. Therefore, the teaching ruler can serve as a set square, and can be taken conveniently during teaching; moreover, when the teaching ruler is used, the problem that various teaching rulers are required to be exchanged frequently in the prior art is solved, so that the teaching ruler can be used conveniently. The teaching ruler can be produced with a miniature style to be used by students or teachers conveniently.
Description
Technical field
The utility model relates to teaching aid field, in particular, relates to a kind of teaching ruler.
Background technology
In teaching process, teacher conventionally need to write and draw on blackboard; Word directly writes with chalk, and figure need to draw with instrument, and general drawing tools has: ruler, set square and protractor etc., and protractor is semicircular structure, edge indicates angle, can take measurement of an angle, and can also draw camber line, circle and straight line; Ruler can be drawn straight line; Can draw right angled triangle and straight line etc.; Set square is generally the triangular structure of right angle of isosceles right triangle structure or 30 degree and 60, can draw isosceles right triangle, 30 degree and 60 degree right angled triangles and straight line etc.Each teaching ruler has effect separately, and usually teacher need to bring multiple teaching rulers in the time of teaching, and need to change different teaching rulers in needing the different figure of picture, thereby carries and use with regard to inconvenient teacher.
Utility model content
Technical problem to be solved in the utility model is to provide the teaching ruler that a kind of teacher of convenience carries and uses.
The purpose of this utility model is achieved through the following technical solutions: a kind of teaching ruler, and entirety is protractor, be provided with first side and Second Edge and intersect at 90 degree scale places and form the through hole at the first right angle, and the angle of the straight line of first side and teaching ruler is 45 degree; The 3rd limit of described through hole and the 4th limit intersect at 60 degree or 120 degree scale places form the second right angle, and the angle of described the 3rd limit and described straight line is 60 degree.
Preferably, described straight line is marked with scale.This teaching ruler can be worked as ruler use like this.
Preferably, on described teaching ruler, be also provided with a strip throughhole and the fixing hole that is arranged on described strip throughhole one end; Described teaching ruler also comprises that one is fixed on the fixing slide block for the putting hole of fixed placement chalk that is provided with on described strip throughhole sidewall, and described fixing slide block can slide on described strip throughhole sidewall.Teaching ruler is set like this and can regulates according to demand fixing slide block, thereby draw different large roundlets.
Preferably, the dualside of described strip throughhole is provided with relative sawtooth.The both sides of strip throughhole arrange relative sawtooth has fixation to slide block, easy to use.
Preferably, described fixing hole is circular port.The fixture fixed effect that insertion circular configuration in fixing hole is set is like this better, can adopt chalk to be fixed.
Preferably, the transparent setting of described teaching ruler.Transparent setting can be seen needs supplementary part, convenient picture.
The utility model is because teaching ruler is that protractor can be drawn and take measurement of an angle; The first side of the through hole of teaching ruler and Second Edge intersect at 90 degree scale places and form the first right angle, and the angle of the straight line of first side and teaching ruler is 45 degree, draw first side, Second Edge and straight line with chalk, then supplement the complete isosceles right triangle that just formed with this teaching ruler; The 3rd limit of through hole and the 4th limit intersect at 60 degree or 120 degree scale places form the second right angle, and the angle of the 3rd limit and straight line is 60 degree, draw the 3rd limit, the 4th limit and straight line with chalk, then supplement the complete right angled triangles that just formed one 30 degree, 60 degree with this teaching ruler; Thereby this teaching ruler can also be worked as set square and be used, and in the time of teachers ' teaching, is just convenient for carrying; And do not need in use often to change different teaching rulers yet, easy to use.And this teaching ruler also can be produced miniature facilitate student or teacher and use.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment teaching ruler;
Fig. 2 is another structural representation of the utility model embodiment teaching ruler.
Wherein: 1, first side; 2, Second Edge; 3, the 3rd limit; 4, the 4th limit; 5, camber line limit; 6, straight line; 7, fixing slide block; 8, intersection point; 9, fixing hole; 10, the first through hole; 11, the second through hole; 12, strip throughhole.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is described in further detail.
The utility model discloses a kind of teaching ruler, and entirety is protractor, as depicted in figs. 1 and 2, be provided with first side 1 and Second Edge 2 and intersect at 90 degree scale places and form the through hole at the first right angle, and first side 1 is 45 degree with the angle of the straight line 6 of teaching ruler; The 3rd limit 3 of described through hole and the 4th limit 4 intersect at 60 degree or 120 degree scale places form the second right angle, and described the 3rd limit 3 is 60 degree with the angle of described straight line 6.The utility model is because teaching ruler is that protractor can be drawn and take measurement of an angle; The first side 1 of the through hole of teaching ruler and Second Edge 2 intersect at 90 degree scale places and form the first right angle, and first side 1 is 45 degree with the angle of the straight line 6 of teaching ruler, draw first side 1, Second Edge 2 and straight line 6 with chalk, then supplement the complete isosceles right triangle that just formed with this teaching ruler; The 3rd limit 3 of through hole and the 4th limit 4 intersect at 60 degree or 120 degree scale places form the second right angle, and the 3rd limit 3 is 60 degree with the angle of straight line 6, draw the 3rd limit 3, the 4th limit 4 and straight line 6 with chalk, then supplement the complete right angled triangles that just formed one 30 degree, 60 degree with this teaching ruler; Thereby this teaching ruler can also be worked as set square and be used, and in the time of teachers ' teaching, is just convenient for carrying; And do not need in use often to change different teaching rulers yet, easy to use.And this teaching ruler also can be produced miniature facilitate student or teacher and use.
In the present embodiment, a side surface on the camber line limit 5 of teaching ruler is marked with scale around, thereby is convenient to picture circle and takes measurement of an angle.
As shown in Figure 1, the extended line on Second Edge 2 and the 4th limit 4 intersects at intersection point 8 places, is arranged on like this when picture 45 is spent right angled triangle or 30 degree and 60 degree right angled triangle and can directly draws two rightangle sides, does not need to supplement rightangle side again, only draw hypotenuse, easy to use.
As shown in Figure 1, straight line 6 is marked with scale, thereby this teaching ruler can be worked as ruler use, not only easy to use, and need not carry ruler, convenient.And the scale on the scale on straight line and camber line limit is at the same face.
As further improvement of this embodiment, as shown in Figure 2, Second Edge 2 and 4 intersections, the 4th limit, intersection point 8 is wholely set with teaching ruler the first through hole 10 and the second through hole 11 that make through hole form triangular structure, thereby has just increased the intensity of teaching ruler.The second acute angle of the first acute angle of the first through hole 10 and the second through hole 11 lays respectively at the two ends place of the straight line 6 of teaching ruler, thereby wherein two rightangle sides at two right angles can arrange maximum, be that first side 1 and the 3rd limit 3 arrange to greatest extent, and then make the figure that draws larger, easy to use.The 3rd acute angle of the first through hole 10 and the 4th acute angle of the second through hole 11 are all arranged to arcuate structure, the first through hole 10 acute angle relative with two of the second through hole 11 that is intersection point 8 places is all arranged to arcuate structure, the area of both junctions is increased, thereby increase the fastness of teaching ruler, and be arranged to arcuate structure without corner angle, facilitate taking and placing; Certainly, the first right angle, the second right angle, the first acute angle and the second acute angle also can be arranged to arcuate structure, the intensity of same increase teaching ruler is set like this and facilitates taking and placing.
As depicted in figs. 1 and 2, on teaching ruler, be also provided with the strip throughhole 12 and the fixing hole 9 that is arranged on these strip throughhole 12 one end that a width is a bit larger tham the diameter of a chalk; Teaching ruler also comprises that one is fixed on the fixing slide block 7 for the putting hole of fixed placement chalk that is provided with on strip throughhole 12 sidewalls, fixing slide block 7 can slide on strip throughhole 12 sidewalls, change as required the position of fixing slide block 7 on strip throughhole 12 sidewalls, the a certain thing of so random use (as desirable penholder, the chalk etc. of whipping) inserts in fixing hole 9 as the center of circle, chalk is inserted to the putting hole position of fixing slide block 7, just can realize round mapping.This fixing hole 9 is circular configuration, thereby facilitates insertion and the cooperation of chalk, penholder etc., and facilitates picture circle, reduces resistance.The present embodiment fixing hole 9 is positioned at the righthand member of strip throughhole 12, and user marks graduated righthand member in the face of teaching ruler one side, arranges like this and facilitates picture circle; Certainly it is also feasible, being arranged on left end.
In the present embodiment, the dualside of strip throughhole 12 is provided with relative sawtooth to fixing slide block 7 is carried out spacing, fixing, and the sawtooth full symmetric of strip throughhole 12 both sides arranges, and this sawtooth is pectination sawtooth.
The material of the utility model teaching ruler can adopt plastic material to carry out transparent setting, thereby conveniently sees and need supplementary part in the time of mapping, and convenient picture is conducive to use.Certainly, also can adopt other transparent material.
The utility model also can be produced into smallscale structure for student or teacher.Needn't carry too much teaching ruler, only need this teaching ruler, easy to use and carry.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (6)
1. a teaching ruler, entirety is protractor, it is characterized in that, be provided with first side and Second Edge and intersect at 90 degree scale places and form the through hole at the first right angle, and the angle of the straight line of first side and teaching ruler is 45 degree; The 3rd limit of described through hole and the 4th limit intersect at 60 degree or 120 degree scale places form the second right angle, and the angle of described the 3rd limit and described straight line is 60 degree; The extended line on described Second Edge and the 4th limit intersects; Described intersection and teaching ruler are wholely set the first through hole and the second through hole that make described through hole form triangular structure; The first acute angle of described the first through hole and the second acute angle of the second through hole lay respectively at the two ends place of described straight line; The 3rd acute angle of described the first through hole and the 4th acute angle of the second through hole are all arranged to arcuate structure.
2. teaching ruler as claimed in claim 1, is characterized in that, described straight line is marked with scale.
3. teaching ruler as claimed in claim 1, is characterized in that, is also provided with a strip throughhole and the fixing hole that is arranged on described strip throughhole one end on described teaching ruler; Described teaching ruler also comprises that one is fixed on the fixing slide block for the putting hole of fixed placement chalk that is provided with on described strip throughhole sidewall, and described fixing slide block can slide on described strip throughhole sidewall.
4. teaching ruler as claimed in claim 3, is characterized in that, the dualside of described strip throughhole is provided with relative sawtooth.
5. teaching ruler as claimed in claim 3, is characterized in that, described fixing hole is circular port.
6. teaching ruler as claimed in claim 1, is characterized in that, the transparent setting of described teaching ruler.
Priority Applications (1)
Application Number  Priority Date  Filing Date  Title 

CN201320706142.0U CN203739488U (en)  20131108  20131108  Teaching ruler 
Applications Claiming Priority (1)
Application Number  Priority Date  Filing Date  Title 

CN201320706142.0U CN203739488U (en)  20131108  20131108  Teaching ruler 
Publications (1)
Publication Number  Publication Date 

CN203739488U true CN203739488U (en)  20140730 
Family
ID=51339344
Family Applications (1)
Application Number  Title  Priority Date  Filing Date 

CN201320706142.0U Withdrawn  After Issue CN203739488U (en)  20131108  20131108  Teaching ruler 
Country Status (1)
Country  Link 

CN (1)  CN203739488U (en) 
Cited By (1)
Publication number  Priority date  Publication date  Assignee  Title 

CN103568662A (en) *  20131108  20140212  邢皓宇  Teaching ruler 

2013
 20131108 CN CN201320706142.0U patent/CN203739488U/en not_active Withdrawn  After Issue
Cited By (3)
Publication number  Priority date  Publication date  Assignee  Title 

CN103568662A (en) *  20131108  20140212  邢皓宇  Teaching ruler 
CN103568662B (en) *  20131108  20150715  邢皓宇  Teaching ruler 
US9897427B2 (en)  20131108  20180220  HAOYU Xing  Educational ruler 
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Legal Events
Date  Code  Title  Description 

C14  Grant of patent or utility model  
GR01  Patent grant  
AV01  Patent right actively abandoned 
Granted publication date: 20140730 Effective date of abandoning: 20150715 

RGAV  Abandon patent right to avoid regrant 