CN204712734U - Telescopic compound teaching aid - Google Patents
Telescopic compound teaching aid Download PDFInfo
- Publication number
- CN204712734U CN204712734U CN201520175028.9U CN201520175028U CN204712734U CN 204712734 U CN204712734 U CN 204712734U CN 201520175028 U CN201520175028 U CN 201520175028U CN 204712734 U CN204712734 U CN 204712734U
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- CN
- China
- Prior art keywords
- chi
- protractor
- scale
- teaching aid
- hinge
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- Expired - Fee Related
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Abstract
The utility model discloses telescopic compound teaching aid, move chi by scale with the active chi of " I " font and the pair of " I " font and form; Initiatively chi is hinged by the protractor of hinge and scale, and pin joint overlaps with the protractor center of circle; Secondary dynamic chi is hinged by the ruler section of hinge and scale, and pin joint is positioned in the symmetrical center line of ruler and dynamic chi; Active chi moves chi with pair and is connected with slide block.Compound teaching aid is a kind of stretching structure, has compasses, protractor, the function of set square and ruler, meets mathematical education, particularly the requirement of solid geometry teaching, avoiding teacher ceaselessly to change teaching aid when drawing, mapping speed and quality of instruction and efficiency can be improved; The retractility of teaching aid, also can meet the instructions for use of different occasion.
Description
Technical field
The utility model relates to teaching aid technical field, particularly relates to telescopic compound teaching aid.
Background technology
In mathematical education process, due to the function singleness of various chi tool device, as ruler, compasses, protractor etc., so teacher attends class carry multiple teaching ruler class teaching aid always at every turn, carrying multiple chi tool can allow people feel very inconvenient simultaneously, especially, when forgetting about carrying any one, all normally adverse influence can be caused to what impart knowledge to students; Meanwhile, in teaching, constantly change teaching aid, progress and the quality of teaching can be affected, too increase the working strength of teacher.
Summary of the invention
For the problem of above-mentioned prior art, the utility model provides telescopic compound teaching aid, overcomes the deficiencies in the prior art part, a kind of telescopic compound teaching aid is provided, facilitate mathematical education, mapping speed and quality of instruction and efficiency can be improved, alleviate the working strength of teacher.
Concrete scheme is as follows:
Telescopic compound teaching aid, move chi 3 by scale 1 with the active chi 2 of " I " font and the pair of " I " font and form, there is protractor 4 one end of scale 1, and the other end has draw point 6, and initiatively there is sliding pin 11 one end of chi 2, and the other end has regulation foot to press from both sides 5; Initiatively chi 2 is hinged by the protractor 4 of hinge 7 with scale 1, and pin joint overlaps with the center of circle of protractor 4; Secondary dynamic chi 3 is hinged by the ruler section of hinge 7 with scale 1, and pin joint is positioned in the symmetrical center line of ruler and dynamic chi; Active chi 2 moves chi 3 with pair and is connected with slide block 8.
Described scale 1 is provided with protractor 4, protractor 4 is provided with angle measuring calibration line, on the protractor plate face inside protractor graduation mark, is provided with deep-slotted chip breaker 12.
Described active chi 2 is provided with regulation foot folder 5, and chalk inserts in regulation foot folder 5; Initiatively chi 2 is hinged by the protractor 4 of hinge and scale 1, and this hinge center is substantially the same with the height of chalk end to draw point point.
Described active chi 2 and pair are moved on chi 3 and are all provided with chute 9, and slide block 8 slides on chute.
Described dynamic chi and scale are plank, stainless steel, transparent plastic or one or more combination in them.
The telescopic compound teaching aid of the utility model, initiatively chi 2 is hinged by the protractor of hinge and scale 1, has the function of compasses.Initiatively chi 2 is provided with regulation foot folder, and chalk inserts in regulation foot folder; This hinge center is substantially the same with the height of chalk end to draw point point.During use, active chi 2 is adjusted on request, the chute that now slide block moves chi 3 at active chi 2 and pair slides, when adjusting to suitable position, slide block is slided in the suitable groove of chute, guarantee that radius of a circle is constant, in order to avoid loosen, cause error; Draw one end (i.e. the center of circle) with draw point in circle process motionless, " compasses " are tilted about 30 degree a little, the lines flow smoothly to make the circle that draws.
The telescopic compound teaching aid of the utility model, two dynamic chis and scale pass through stud connection, two dynamic chis connect itself by slide block, slide block slides on the chute of dynamic chi, acute triangle, right angled triangle, obtuse triangle can be combined into, there is the function of set square, also there is the function of demonstration, teaching can be made more lively, vivider, improve intuitive.Simultaneously due to scale having protractor, the principle utilizing vertical angles equal can draw 30 degree of right angled triangles and 45 degree of right angled triangles directly and accurately, meets the particular/special requirement (opposite side as 30 degree of angle right angled triangles equals the half of hypotenuse) in mathematical education.
The telescopic compound teaching aid of the utility model, has the function of ruler after amounting to, can mark the line segment of different length according to the scale on ruler.
The telescopic compound teaching aid of the utility model, can also be used alone protractor after amounting to, and with the suitable scale place mark of chalk in protractor angle, is connected by this mark, can accurately marks different angles with the center of circle, or directly with it to angular metric angle.
The utility model discloses telescopic compound teaching aid, move chi by scale with the active chi of " I " font and the pair of " I " font and form; Initiatively chi is hinged by the protractor of hinge and scale, and pin joint overlaps with the protractor center of circle; Secondary dynamic chi is hinged by the ruler section of hinge and scale, and pin joint is positioned in the symmetrical center line of ruler and dynamic chi; Active chi moves chi with pair and is connected with slide block.Compound teaching aid is a kind of stretching structure, has compasses, protractor, the function of set square and ruler, meets mathematical education, particularly the requirement of solid geometry teaching, avoiding teacher ceaselessly to change teaching aid when drawing, mapping speed and quality of instruction and efficiency can be improved; The retractility of teaching aid, also can meet the instructions for use of different occasion.
Accompanying drawing explanation
Structural representation when Fig. 1 is the utility model expansion;
Fig. 2 is the structural representation of the utility model when amounting to;
Fig. 3 is the structural representation of scale 1;
Fig. 4 is the structural representation of hinge;
Fig. 5 is the structural representation of slide block.
In figure: 1-scale; 2-is chi initiatively; The dynamic chi of 3-pair; 4-protractor; 5-regulation foot is pressed from both sides; 6-draw point; 7-hinge; 8-slide block; 9-chute; 10-groove; The sliding pin of 11-; 12-deep-slotted chip breaker.
Detailed description of the invention
Telescopic compound teaching aid as shown in Figures 1 to 5, moves chi 3 by scale 1 with the active chi 2 of " I " font and the pair of " I " font and forms.There is protractor 4 one end of scale 1, protractor 4 has deep-slotted chip breaker 12, and sliding pin 11 slides in deep-slotted chip breaker 12, and the other end has draw point 6; Initiatively there is sliding pin 11 one end of chi 2, and the other end has regulation foot to press from both sides 5, and chalk inserts in regulation foot folder 5; Initiatively chi 2 is hinged by the protractor 4 of hinge 7 with scale 1, and pin joint overlaps with the center of circle of protractor; Secondary dynamic chi 3 is hinged by the ruler section of hinge 7 with scale 1, and pin joint is positioned at ruler and pair is moved in the symmetrical center line of chi; Active chi 2 moves chi 3 with pair and is connected with slide block, and dynamic chi has chute 9, and chute 9 is provided with groove 10; This compound teaching aid is a kind of stretching structure.Dynamic chi and scale are plank, stainless steel, transparent plastic or the one or more combination in them.
The telescopic compound teaching aid of the utility model, initiatively chi 2 is hinged by the protractor 4 of hinge 7 with scale 1.Initiatively chi 2 is provided with regulation foot folder 5, and chalk inserts in regulation foot folder; This hinge center is substantially the same with the height of chalk end to draw point point.During use, active chi 2 is adjusted on request, the chute 9 that now slide block moves chi 3 at active chi 2 and pair slides, when adjusting to suitable position, slide block 8 is slided in the suitable groove of chute 9 10, guarantee that radius of a circle is constant; Draw one end (i.e. the center of circle) with draw point in circle process motionless, " compasses " are tilted about 30 degree a little, the lines flow smoothly to make the circle that draws.
The telescopic compound teaching aid of the utility model, active chi 2 is moved chi 3 with pair and is connected by hinge 7 with scale 1, two dynamic chis connect itself by slide block 8, slide block 8 slides on the chute 9 of dynamic chi, acute triangle, right angled triangle, obtuse triangle can be formed, there is the function of set square, also there is the function of demonstration, teaching can be made more lively, vivider, improve intuitive.Simultaneously due to scale having protractor, the principle utilizing vertical angles equal can draw 30 degree of right angled triangles and 45 degree of right angled triangles directly and accurately, meets the particular/special requirement (opposite side as 30 degree of angle right angled triangles equals the half of hypotenuse) in mathematical education.
The telescopic compound teaching aid of the utility model, can mark the line segment of different length according to the scale on ruler after amounting to.Can also protractor be used alone, with the suitable place mark of chalk at protractor scale, this mark be connected with the center of circle, accurately mark different angles, or directly with it to angular metric angle.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, belong within the scope of the utility model claim and equivalent technologies thereof to these amendments of the present utility model and modification, then the utility model also comprises these change and modification.
Claims (5)
1. telescopic compound teaching aid, it is characterized in that: move chi (3) by scale (1) and the active chi (2) of " I " font and the pair of " I " font and form, there is protractor (4) one end of scale (1), the other end has draw point (6), initiatively there is sliding pin (11) one end of chi (2), and the other end has regulation foot to press from both sides (5); Initiatively chi (2) is hinged by the protractor (4) of hinge (7) with scale (1), and pin joint overlaps with the center of circle of protractor (4); Secondary dynamic chi (3) is hinged by the ruler section of hinge (7) with scale (1), and pin joint is positioned at ruler and pair is moved in the symmetrical center line of chi; Active chi (2) is moved chi (3) with pair and is connected with slide block (8).
2. teaching aid according to claim 1, it is characterized in that: scale (1) is provided with protractor, (4) are provided with angle measuring calibration line to protractor, on the protractor plate face inside protractor graduation mark, are provided with deep-slotted chip breaker (12).
3. teaching aid according to claim 1, is characterized in that: initiatively chi (2) is provided with regulation foot folder (5), and chalk inserts in regulation foot folder (5); Initiatively chi (2) is hinged by the protractor (4) of hinge (7) with scale (1), and this hinge (7) center is substantially the same with the height of chalk end to draw point point.
4. teaching aid according to claim 1, is characterized in that: initiatively chi (2) and pair are moved on chi (3) and be all provided with chute (9), and slide block (8) slides on chute.
5. teaching aid according to claim 1, is characterized in that: dynamic chi and scale are plank, stainless steel, transparent plastic or one or more combination in them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520175028.9U CN204712734U (en) | 2015-03-18 | 2015-03-18 | Telescopic compound teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520175028.9U CN204712734U (en) | 2015-03-18 | 2015-03-18 | Telescopic compound teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204712734U true CN204712734U (en) | 2015-10-21 |
Family
ID=54311759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520175028.9U Expired - Fee Related CN204712734U (en) | 2015-03-18 | 2015-03-18 | Telescopic compound teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204712734U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270049A (en) * | 2015-03-18 | 2016-01-27 | 史瑞霞 | Telescopic combined teaching tool |
| CN106313971A (en) * | 2016-08-29 | 2017-01-11 | 王美琴 | Multifunctional teaching aid |
| CN110039930A (en) * | 2019-04-26 | 2019-07-23 | 陕西理工大学 | A kind of multi-functional geometric drawing ruler |
-
2015
- 2015-03-18 CN CN201520175028.9U patent/CN204712734U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270049A (en) * | 2015-03-18 | 2016-01-27 | 史瑞霞 | Telescopic combined teaching tool |
| CN106313971A (en) * | 2016-08-29 | 2017-01-11 | 王美琴 | Multifunctional teaching aid |
| CN110039930A (en) * | 2019-04-26 | 2019-07-23 | 陕西理工大学 | A kind of multi-functional geometric drawing ruler |
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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: 20151021 Termination date: 20170318 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |