CN203681085U - Three-in-one shape teaching aid - Google Patents
Three-in-one shape teaching aid Download PDFInfo
- Publication number
- CN203681085U CN203681085U CN201320720948.5U CN201320720948U CN203681085U CN 203681085 U CN203681085 U CN 203681085U CN 201320720948 U CN201320720948 U CN 201320720948U CN 203681085 U CN203681085 U CN 203681085U
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- CN
- China
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- teaching aid
- vertical pivot
- transverse axis
- side hypotenuse
- fixing glue
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Abstract
The utility model provides a three-in-one shape teaching aid. The entire teaching aid consists of a rotating shaft, a right side bevel edge, fixing glue, a left side bevel edge, a vertical shaft and a transverse shaft, wherein angle scales are marked on the two bevel edges. By adopting the design, the degrees of specified angles can be measured accurately, and integration of a plurality of independent drawing tools such as a straight ruler, a triangular ruler, a pair of compasses and an angle gauge is realized skillfully. By using the same shaft, the number of shafts is reduced, the entire set of drawing tools is integrated into a board, and the problem that a blackboard is scratched easily by pins of the compasses is solved. Meanwhile, the three-in-one shape teaching aid is firm and simple in structure, and is flexible and convenient for using, and the blackboard drawing efficiency can be increased greatly.
Description
Technical field
The utility model relates to a kind of teaching aid, especially a kind of Multifunctional math teaching aid.
Background technology
Teaching and classmates learn and other design in, all to draw geometric figure diversified in specifications, required precision is different.The figure that free-hand drawing draws is not only lack of standardization but also not attractive in appearance, so for teacher, student and designer, draw the geometric graph of comparison standard, the drawing tools such as ruler, compasses are absolutely necessary.What current most of consumer used is all a set of traditional drawing tools, and this cover instrument generally comprises ruler, isosceles drawing square, has a pin is the drawing square of 60 degree, compasses, protractor.Each part of this kit is all independently, often paints a figure and will use this wherein several or even whole instrument simultaneously.Use like this this cover drawing tool to draw just very inconvenient.When picture, for convenient fixing, the fixing feet bottom of general compasses is provided with minute hand, when this pin easily scratches blackboard, also likely user is damaged.All drawing tools are integrated, and the fixing feet bottom minute hand of cancelling compasses has been to know together in the industry.Below the technology that published improvement to teaching aid and mathematics drawing tools are integrated, as:
1, [title] Combined-type math teaching aid, [application number] CN200620099987.8, the patent documentation of [publication number] CN2876942 discloses a kind of Combined-type math teaching aid, the feature of this teaching aid is that stull is formed by connecting by some joint stulls, two of temple is sphenocephaly, on it, offer bolt hole, dispose bolt, nut, two of stull offers groove, groove upper and lower plates offers slotted eye, the two ends of perpendicular support are provided with bolt and have the nut matching with it, by several stulls, temple, perpendicular support is combined into the demonstration teaching aid of plane geometry and solid geometry.
2, [title] multipurpose mathematics teaching aid, [application number] CN201220032434.6, the patent documentation of [publication number] CN202413160U discloses a kind of multipurpose mathematics teaching aid, this teaching aid mainly comprises cross coordinatometer, it is characterized in that: the transverse axis of cross coordinatometer is provided with protractor, second half transverse axis relative with protractor is hinged by rotating shaft, cross coordinatometer longitudinal axis upper end is provided with locating shaft, locating shaft is provided with two rulers, longitudinal axis end at cross coordinatometer is provided with sucker, on the longitudinal axis of cross coordinatometer, be provided with chute, in chute, be provided with the chalk folder that can move along chute, the other end longitudinal axis relative with sucker on cross coordinatometer is provided with suppending hole.
3, [title] Mathematics teaching aid for students in middle school, [application number] CN201220115626.3, the patent documentation of [publication number] CN202495179U discloses a kind of Mathematics teaching aid for students in middle school, this teaching aid comprises the first bar rule, the second bar rule and Article 3 chi, on described the first bar rule, the second bar rule and Article 3 chi, be respectively provided with strip hole, in strip hole on strip hole and the second bar rule on described the first bar rule, be provided with a first common fastener, in the strip hole of described the first fastener on can strip hole and the second bar rule on described the first bar rule, slide; In strip hole on strip hole and Article 3 chi on described the first bar rule, be provided with a second common fastener, in the strip hole of described the second fastener on can strip hole and Article 3 chi on described the first bar rule, slide; In strip hole on strip hole and Article 3 chi on described the second bar rule, be provided with a 3rd common fastener, in the strip hole of described the 3rd fastener on can strip hole and Article 3 chi on described the second bar rule, slide.
4, [title] a kind of Multifunctional math teaching aid, [patent No.] CN201220024001.6, the patent documentation of [publication number] CN202439439U discloses a kind of Multifunctional math teaching aid, this teaching aid is characterised in that: comprise protractor and ruler, described protractor is provided with angle index, described ruler is provided with length scale, the circle centre position of described protractor is provided with a fixing glue, one end and the fixing glue of described ruler are hinged, other one end of described ruler is provided with the compass foot of location use, on described ruler, be also hinged with a compass leg, the end of described compass leg is socketed with chalk.
Above-mentioned disclosed second and Section 4 drawing tools all relate to existing independently drawing tools integrated, Section 1 and Section 3 drawing tools relate to existing freestanding drawing tools are improved.They remove to improve the overall performance of existing drawing tools from different angles.But these devices are unreasonable in mechanics design, and whole device is firm not, and the figure in this figure and ideal that can cause drawing produces larger gap dimensionally.Secondly, the structure too complex of these devices, uses underaction convenient, is difficult to increase substantially the efficiency of drawing on blackboard.Therefore in the integration of drawing tools, also has very large space.How further to integrate these independently drawing tools, and it is simple in structure to make new drawing tools have, it is flexible, convenient to use, and can effectively improve the advantage of the drawing efficiency on blackboard, the problem of primary thinking while becoming design drawing instrument.
Summary of the invention
The utility model provides a kind of three to close shape teaching aid, that installs is simple in structure, not only solve current needle of compasses and easily scratched blackboard, easy problem that user is damaged, also solved and used general compasses on blackboard, to paint bowlder along with the chalk problem that radius of a circle diminishes gradually that shortens gradually.
The utility model three closes the whole device of shape teaching aid and is made up of rotating shaft, right side hypotenuse, fixing glue, left side hypotenuse, vertical pivot, transverse axis; Wherein vertical pivot is vertical with transverse axis and intersect at fixing glue place; Vertical pivot and transverse axis, isosceles right triangle of the crossing composition of left side hypotenuse; Vertical pivot and transverse axis, right angled triangle of the crossing composition of right side hypotenuse, the angle of transverse axis formation crossing with right side hypotenuse is 60
o; Fixing glue is fixed on one end of rotating shaft on the intersection point of vertical pivot and transverse axis, and rotating shaft can rotate freely around fixing glue; On right side hypotenuse, left side hypotenuse, vertical pivot, transverse axis, be carved with length scale; Angle index is also carved with in right side hypotenuse, left side hypotenuse inner side.
Described three to close shape teaching aid right side hypotenuse, left side hypotenuse, vertical pivot, four axles of transverse axis fixing, non-dismountable each other.After zero graduation line on vertical pivot extends, by the center of circle of fixing glue, left side hypotenuse is crossing with vertical pivot has not only formed one 45
oacute angle, also formed one 135
oobtuse angle.
The utility model three closes shape teaching aid, and angle index is marked on two hypotenuses, and such design can be measured the number of degrees of specified angle accurately, has realized cleverly the integration to multiple independent drawing tools such as ruler, set square, compasses, protractors.By common use same axle, when having reduced the number of axle, a whole set of drawing tool is incorporated into again on a plate; The rotating shaft of drawing circle swing arm is arranged in the plane of multifunctional ruler, replace the fixing stitch of compasses by fixing glue, solved needle of compasses and easily scratched blackboard, easy problem that user is damaged, such design has also solved and has used general compasses on blackboard, to paint bowlder along with the chalk problem that radius of a circle diminishes gradually that shortens gradually.Simultaneously, the utility model sound construction, by rationally utilizing each angle on teaching aid and rotating shaft, protractor etc. can draw the geometric graph less with ideal dimensions gap, simple in structure, use flexibly and easily, can increase substantially the efficiency of drawing on blackboard.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-rotating shaft, 2-right side hypotenuse, 3-fixing glue, 4-left side hypotenuse, 5-vertical pivot, 6-transverse axis, 7-length scale, 8-angle index.
The specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and in conjunction with the specific embodiment below.
As shown in Figure 1, the utility model three closes shape teaching aid, it is characterized in that whole device is made up of rotating shaft 1, right side hypotenuse 2, fixing glue 3, left side hypotenuse 4, vertical pivot 5, transverse axis 6.Wherein vertical pivot 5 is vertical with transverse axis 6 and intersect at fixing glue 3 places, vertical pivot 5 and transverse axis 6, isosceles right triangle of the crossing composition of left side hypotenuse 4.Vertical pivot 5 and transverse axis 6, right angled triangle of the crossing composition of right side hypotenuse 2, in this triangle, the angle of transverse axis 6 formation crossing with right side hypotenuse 2 is 60
o, fixing glue 3 is fixed on one end of rotating shaft 1 on the intersection point of vertical pivot 5 and transverse axis 6, and rotating shaft 1 can rotate freely around fixing glue 3.On right side hypotenuse 2, left side hypotenuse 4, vertical pivot 5, transverse axis 6, be carved with length scale 7, angle index 8 is also carved with in right side hypotenuse 2, left side hypotenuse 4 inner sides.
Setting-out: first choose a kind of three and close shape teaching aid, choose a wherein arbitrary limit and, as template, just can make a line segment along this edge.
Draw right angled triangle, isosceles triangle, equilateral triangle: a kind of three to close that shape teaching aid divides by module be to be 60 by an isosceles right triangle and a base angle
oright angled triangle composition.Whole teaching aid has 30
o, 45
o, 60
o, 90
o, 135
oangle, while drawing right angled triangle, isosceles triangle, equilateral triangle, as long as rationally utilize these angles having provided, be just easy to draw desired triangle.
Draw circle: first vertical pivot 5, the fixing glue 3 of transverse axis 6 intersections is set up and whole teaching aid is fixed on blackboard, and the rotating shaft 1 on teaching aid can be rotated freely along fixing glue 3; Secondly mark and will paint radius of a circle at rotating shaft 1 according to the length scale 7 on vertical pivot 5; Finally, allowing whole teaching aid be close to blackboard handgrip chalk presses on the punctuate of rotating shaft 1 and rotates a circle along rotating shaft 1 lower end.Realize the function of picture circle.
Angulation: be provided with angle index 8 in the right side of teaching aid hypotenuse 2, left side hypotenuse 4 inner sides, need only the summit at angle and the center superposition of fixing glue 3, just can read the angle at this angle.
In sum, it is simple that the utility model three closes shape teaching aid structure, use flexible, not only solve current needle of compasses and easily scratched blackboard, the easy problem that user is damaged, also solved and used general compasses on blackboard, to paint bowlder along with the chalk problem that radius of a circle diminishes gradually that shortens gradually, can significantly improve the drawing efficiency on blackboard.
Claims (4)
1. three close a shape teaching aid, it is characterized in that: whole device is made up of rotating shaft (1), right side hypotenuse (2), fixing glue (3), left side hypotenuse (4), vertical pivot (5), transverse axis (6); Wherein vertical pivot (5) is vertical with transverse axis (6) and intersect at fixing glue (3) and locate; Vertical pivot (5) and transverse axis (6), isosceles right triangle of the crossing composition of left side hypotenuse (4); Vertical pivot (5) and transverse axis (6), right angled triangle of the crossing composition of right side hypotenuse (2), transverse axis (6) is 60 with the angle of the crossing formation of right side hypotenuse (2)
o; Fixing glue (3) is fixed on one end of rotating shaft (1) on the intersection point of vertical pivot (5) and transverse axis (6), and rotating shaft (1) can rotate freely around fixing glue (3); On right side hypotenuse (2), left side hypotenuse (4), vertical pivot (5), transverse axis (6), be carved with length scale (7); Angle index (8) is also carved with in right side hypotenuse (2), left side hypotenuse (4) inner side.
2. according to claim 1 three close shape teaching aid, it is characterized in that: right side hypotenuse (2), left side hypotenuse (4), vertical pivot (5), (6) four axles of transverse axis are fixing, non-dismountable each other.
3. according to claim 1 three close shape teaching aid, it is characterized in that: after the zero graduation line on vertical pivot (5) extends, pass through the center of circle of fixing glue (3).
4. according to claim 1 and 2 three close shape teaching aid, it is characterized in that: left side hypotenuse (4) is crossing with vertical pivot (5) has not only formed one 45
oacute angle, also formed one 135
oobtuse angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320720948.5U CN203681085U (en) | 2013-11-15 | 2013-11-15 | Three-in-one shape teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320720948.5U CN203681085U (en) | 2013-11-15 | 2013-11-15 | Three-in-one shape teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203681085U true CN203681085U (en) | 2014-07-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320720948.5U Expired - Fee Related CN203681085U (en) | 2013-11-15 | 2013-11-15 | Three-in-one shape teaching aid |
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| Country | Link |
|---|---|
| CN (1) | CN203681085U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103568664A (en) * | 2013-11-15 | 2014-02-12 | 南丹县大厂镇中心小学 | Three-ply teaching aid |
-
2013
- 2013-11-15 CN CN201320720948.5U patent/CN203681085U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103568664A (en) * | 2013-11-15 | 2014-02-12 | 南丹县大厂镇中心小学 | Three-ply teaching aid |
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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: 20140702 Termination date: 20141115 |
|
| EXPY | Termination of patent right or utility model |