CN202422507U - Portable flexible combined triangular demonstration drawing ruler - Google Patents
Portable flexible combined triangular demonstration drawing ruler Download PDFInfo
- Publication number
- CN202422507U CN202422507U CN2012200260787U CN201220026078U CN202422507U CN 202422507 U CN202422507 U CN 202422507U CN 2012200260787 U CN2012200260787 U CN 2012200260787U CN 201220026078 U CN201220026078 U CN 201220026078U CN 202422507 U CN202422507 U CN 202422507U
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- CN
- China
- Prior art keywords
- tape measure
- triangle
- ruler
- portable
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a portable flexible combined triangular demonstration drawing ruler which comprises a telescopic straight ruler. The portable flexible combined triangular demonstration drawing ruler is characterized in that a left tape and a right tape are respectively fixed on two ends of the telescopic straight ruler; tape bodies of the left tape and the right tape are connected into a whole, and pass by a roller. The portable flexible combined triangular demonstration drawing ruler can change the shape of a triangle randomly and is convenient to carry, wherein the lengths of two sides of the triangle can be changed randomly, so the portable flexible combined triangular demonstration drawing ruler is suitable for the demonstration of various triangles.
Description
Technical field
The utility model relates to a kind of improvement of set square, belongs to mathematics teaching aid, specifically a kind of portable limber hook up triangle demonstration picture chi.
Background technology
Employed set square all is the transparent triangle of fixing in primary school math teaching; Its fixed angle is 90 degree, 60 degree, 30 degree, or 90 degree, 45 are spent, 45 degree, if draw the triangle of other angles; Or on-right angle equilateral triangle, isosceles triangle, just relatively bothersome, the difficult picture.In order to overcome the deficiency of above existing set square; What have adopts ruler to flexibly connect on leg-of-mutton three limits; Wherein there is the length of two rulers scalable; Thereby can arbitrarily change leg-of-mutton shape, but this triangle that is flexibly connected by ruler is not easy to carry, and the collapsing length of two rulers is limited.
Summary of the invention
The purpose of the utility model is to provide a kind of not only can arbitrarily change leg-of-mutton shape, and be easy to carry, leg-of-mutton two length of sides portable limber hook up triangle demonstration picture chi that can arbitrarily change wherein.
In order to reach above purpose; The technical scheme that the utility model adopted is: this portable limber hook up triangle demonstration picture chi; Comprise a telescopic ruler; It is characterized in that: fix left tape measure and right tape measure respectively at the two ends of telescopic ruler, the chi body of left side volume 2 and right tape measure connects as one, and the chi body is walked around roller.When with telescopic ruler by being pressed on the blackboard, with roller with the chi body when the top away from telescopic ruler struts, can form triangle, the leg-of-mutton length of side changes because of the residing position of roller, so can demonstrate triangle arbitrarily.
The utility model is also implemented through following measure: the bottom surface of described left tape measure and right tape measure and the bottom of roller are equipped with rubber suction cups.
The housing upper face of described left tape measure and right tape measure is provided with the right angle scale mark.
Sheathed sleeve on the described roller, the chi body passes the opening of sleeve lateral wall.
The beneficial effect of the utility model is: this portable limber hook up triangle demonstration picture chi, not only can arbitrarily change leg-of-mutton shape, and be easy to carry, wherein leg-of-mutton two length of sides can arbitrarily change, so the demonstration of applicable various triangular.
Description of drawings
Fig. 1 is the structure schematic top plan view of the utility model.
Fig. 2 looks synoptic diagram for the utility model structure left side.
Among the figure: 1, telescopic ruler; 2, left tape measure; 3, right tape measure; 4, chi body; 5, roller; 6, rubber suction cups; 7, sleeve; 8, right angle scale mark.
Embodiment
Make the utility model with reference to Fig. 1, Fig. 2.This portable limber hook up triangle demonstration picture chi comprises a telescopic ruler 1, and it is characterized in that: fix left tape measure 2 and right tape measure 3 respectively at the two ends of telescopic ruler 1, the chi body 4 of left tape measure 2 and right tape measure 3 connects as one, and chi body 4 is walked around roller 5.When with telescopic ruler 1 by being pressed on the blackboard, with roller 5 with chi body 4 when the top away from telescopic ruler 1 struts, can form triangle, the leg-of-mutton length of side changes because of roller 5 residing positions, so can demonstrate triangle arbitrarily.
Improvement as the utility model: the described left tape measure 2 and the bottom surface of right tape measure 3 and the bottom of roller 5 are equipped with rubber suction cups 6, so that left tape measure 2 and right tape measure 3 and roller 5 are located on blackboard, make the triangle setting.
The housing upper face of described left tape measure 2 and right tape measure 3 is provided with right angle scale mark 8, accurately to mark different right-angle triangles.
Sheathed sleeve 7 on the described roller 5, chi body 4 passes the opening of sleeve 7 sidewalls.
Under obsolete state, roller 5 is pressed close to telescopic ruler 1, and 1 shortening of telescopic ruler, can be easy to carry like this.
Claims (3)
1. portable limber hook up triangle demonstration picture chi; Comprise a telescopic ruler (1); It is characterized in that: fixing respectively left tape measure (2) and the right tape measure (3) at the two ends of telescopic ruler (1); The chi body (4) of left side tape measure (2) and right tape measure (3) connects as one, and chi body (4) is walked around roller (5).
2. portable limber hook up triangle demonstration picture chi according to claim 1, it is characterized in that: the bottom surface of described left tape measure (2) and right tape measure (3) and the bottom of roller (5) are equipped with rubber suction cups (6).
3. portable limber hook up triangle demonstration picture chi according to claim 1, it is characterized in that: described roller (5) is gone up sheathed sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200260787U CN202422507U (en) | 2012-01-20 | 2012-01-20 | Portable flexible combined triangular demonstration drawing ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200260787U CN202422507U (en) | 2012-01-20 | 2012-01-20 | Portable flexible combined triangular demonstration drawing ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202422507U true CN202422507U (en) | 2012-09-05 |
Family
ID=46747245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200260787U Expired - Fee Related CN202422507U (en) | 2012-01-20 | 2012-01-20 | Portable flexible combined triangular demonstration drawing ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202422507U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109584686A (en) * | 2019-01-21 | 2019-04-05 | 西安外事学院 | Adjustable type geometric figure teaching aid |
-
2012
- 2012-01-20 CN CN2012200260787U patent/CN202422507U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109584686A (en) * | 2019-01-21 | 2019-04-05 | 西安外事学院 | Adjustable type geometric figure 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: 20120905 Termination date: 20130120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |