CN203305722U - Multifunctional movable triangular ruler - Google Patents
Multifunctional movable triangular ruler Download PDFInfo
- Publication number
- CN203305722U CN203305722U CN2013202628177U CN201320262817U CN203305722U CN 203305722 U CN203305722 U CN 203305722U CN 2013202628177 U CN2013202628177 U CN 2013202628177U CN 201320262817 U CN201320262817 U CN 201320262817U CN 203305722 U CN203305722 U CN 203305722U
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- Prior art keywords
- edge
- multifunctional movable
- flexible
- limit
- triangular ruler
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- Expired - Fee Related
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Abstract
The utility model discloses a multifunctional movable triangular ruler. The multifunctional movable triangular ruler comprises a fixed edge, and further comprises a first telescopic edge and a second telescopic edge, wherein the first telescopic edge and the second telescopic edge are movably connected with the two ends of the fixed edge respectively; the other end of the first telescopic edge is movably connected with the other end of the second telescopic edge; the three apexes of the multifunctional movable triangular ruler are respectively provided with a protractor. The centers of the three protractors are placed on the three apexes respectively; a zero graduation line of each protractor and each corresponding edge coincide all the time. Compared with the prior art, the multifunctional movable triangular ruler has the advantages of being capable of fast measuring the degrees of three angles because the edge lengths of the triangular ruler are adjustable, the three angles are adjustable and each apex is provided with a protractor, ensuring that the edge lengths and the angles of the triangular ruler can be adjusted to verify the mathematical theory that the sum of the interior angles of a triangle in a plane equals 180 degrees constantly, being intuitive in appearance and sufficiently arousing the classroom climate and the enthusiasm of students.
Description
Technical field
The utility model relates to a kind of teaching aid, in particular a kind of multifunctional movable set square.
Background technology
Existing set square for teaching comprises equilateral triangle, isosceles triangle and right angled triangle, its three edge lengths are all changeless, when being a teacher this simple mathematical principle of explanation " in plane, leg-of-mutton interior angle and perseverance are 180 degree ", because three limits of set square are all changeless, therefore teacher explains visual in image not, be not easy to the student and better understand, can not well transfer the learning initiative of classroom atmosphere and students.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, but a kind of visual in image multifunctional movable set square automatic measurement angle, extension type is provided.
The utility model is achieved through the following technical solutions:
The multifunctional movable set square, comprise fixed edge, also comprises respectively the first flexible limit and the second flexible limit that with described fixed edge two ends, are flexibly connected, the described first flexible limit other end and the second flexible limit other end flexible connection; On three summits of described multifunctional movable set square, also be respectively arranged with protractor, the center of described three protractors is placed in respectively on three summits, and the zero graduation line of described each protractor overlaps with every corresponding limit all the time.
The described first flexible limit comprises the first canned paragraph and can be along the first canned paragraph flexible the first telescopic section back and forth, the described second flexible limit comprises the second canned paragraph and can be along the second canned paragraph flexible the second telescopic section back and forth, and second telescopic section on first canned paragraph on the described first flexible limit and the second flexible limit is flexibly connected.
Rotating hinged between described three limits.
The utility model has the following advantages compared to existing technology:
The multifunctional movable set square that the utility model provides, because the length of side of set square can be regulated, the angle at three angles can be regulated, on each summit of set square, be provided with simultaneously a protractor, for measuring fast the number of degrees at three angles, can be by the length of side and the angle of adjusting triangle shape are verified " in plane, leg-of-mutton interior angle and perseverance are 180 degree " this mathematical principle repeatedly, visual in image, can allow the student in person attempt producing interactive, increased interest, strengthen student's understanding and memory, given full play to the enthusiasm of classroom atmosphere and students study.And this set square is simple in structure, make easily, convenient and practical, be worth further promoting the use of.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented take technical solutions of the utility model under prerequisite; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
Referring to Fig. 1, the multifunctional movable set square that the utility model provides, comprise fixed edge 1, and with the rotating hinged first flexible limit 2, fixed edge 1 two ends and the second flexible limit 2, flexible limit 3, the first and the second flexible limit 3, imitate the flexible principle of Zhe Die San Bing respectively and make.The first flexible limit 2 comprises the first canned paragraph 21 and can be along the first canned paragraph 21 flexible the first telescopic section 22 back and forth, the second flexible limit 3 comprises that the second canned paragraph 31 is rotating hinged with second telescopic section 32 on the limit 3 of stretching along first canned paragraph 21 and second on the second telescopic section 32, the first flexible limits 2 that the second canned paragraph 31 stretches back and forth.On three summits of multifunctional movable set square, also be respectively arranged with protractor 4, the center of three protractors 4 is placed in respectively on three summits, the zero graduation line of each protractor 4 overlaps with every corresponding limit all the time, rotates when limit, and the protractor 4 corresponding with limit is along with synchronously rotate on limit.
During use, fixed edge 1 is fixing, first the first flexible limit 2 is turned right, the length on the first flexible limit 2 and the second flexible limit 3 is regulated on rotation limit, limit, make it become acute triangle, now from the protractor on three summits, reading respectively the number of degrees at three angles, the number of degrees addition by three angles can draw: in plane the interior angle of acute triangle and be 180 the degree.The first flexible limit 2 being turned left, it is vertical with fixed edge 1 to be adjusted to again, the length that the first flexible limit 2 and the second flexible limit 3 are regulated in rotation limit, limit makes it become right angled triangle, from three protractors, reading respectively the number of degrees addition, can draw: in plane the interior angle of right angled triangle and be 180 the degree.Finally continued to turn left in the first flexible limit 2 to fixed edge 1, forming obtuse angle, the length on the first flexible limit 2 and the second flexible limit 3 is regulated on rotation limit, limit, make it become obtuse triangle, the number of degrees that now read again three angles can draw: in plane the interior angle of obtuse triangle and be 180 the degree.By regulating the length on the first flexible limit 2 and the second flexible limit 3, can form difform triangle, by teacher and classmate's repetition test, just can be visual in image draw " leg-of-mutton interior angle and perseverance are 180 spend " this mathematical principle on the plane in.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. the multifunctional movable set square, comprise fixed edge, it is characterized in that: also comprise respectively the first flexible limit and the second flexible limit that with described fixed edge two ends, are flexibly connected, the described first flexible limit other end and the second flexible limit other end flexible connection; On three summits of described multifunctional movable set square, also be respectively arranged with protractor, the center of described three protractors is placed in respectively on three summits, and the zero graduation line of described each protractor overlaps with every corresponding limit all the time.
2. multifunctional movable set square as claimed in claim 1, it is characterized in that: the described first flexible limit comprises the first canned paragraph and can be along the first canned paragraph flexible the first telescopic section back and forth, the described second flexible limit comprises the second canned paragraph and can be along the second canned paragraph flexible the second telescopic section back and forth, and second telescopic section on first canned paragraph on the described first flexible limit and the second flexible limit is flexibly connected.
3. multifunctional movable set square as claimed in claim 1 or 2, is characterized in that: rotating hinged between described three limits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202628177U CN203305722U (en) | 2013-05-14 | 2013-05-14 | Multifunctional movable triangular ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202628177U CN203305722U (en) | 2013-05-14 | 2013-05-14 | Multifunctional movable triangular ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203305722U true CN203305722U (en) | 2013-11-27 |
Family
ID=49611953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202628177U Expired - Fee Related CN203305722U (en) | 2013-05-14 | 2013-05-14 | Multifunctional movable triangular ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203305722U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107839385A (en) * | 2017-11-13 | 2018-03-27 | 许昌市建安区第三高级中学 | A kind of extension type set square |
| CN110491254A (en) * | 2019-08-26 | 2019-11-22 | 武喜林 | A kind of mathematics learning aid corner instrument |
-
2013
- 2013-05-14 CN CN2013202628177U patent/CN203305722U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107839385A (en) * | 2017-11-13 | 2018-03-27 | 许昌市建安区第三高级中学 | A kind of extension type set square |
| CN107839385B (en) * | 2017-11-13 | 2021-08-24 | 泉州市桥东商贸有限公司 | Retractable set square |
| CN110491254A (en) * | 2019-08-26 | 2019-11-22 | 武喜林 | A kind of mathematics learning aid corner instrument |
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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: 20131127 Termination date: 20150514 |
|
| EXPY | Termination of patent right or utility model |