CN202986539U - Mathematical tool rule - Google Patents
Mathematical tool rule Download PDFInfo
- Publication number
- CN202986539U CN202986539U CN 201220749120 CN201220749120U CN202986539U CN 202986539 U CN202986539 U CN 202986539U CN 201220749120 CN201220749120 CN 201220749120 CN 201220749120 U CN201220749120 U CN 201220749120U CN 202986539 U CN202986539 U CN 202986539U
- Authority
- CN
- China
- Prior art keywords
- set square
- mathematical tool
- sliding sleeve
- expansion link
- tool rule
- 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
Links
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a mathematical tool rule which includes a set square (1), a semicircle protractor (2) is connected inside the set square (1), an extensible rod (3) is arranged at the right-angle endpoint of the set square (1) and is connected with the set square (1) through a rotating shaft (4), the top of the extensible rod (3) is provided with a sliding sleeve (5) capable of extending along the extensible sleeve, and chalks (6) can be placed at the top of the sliding sleeve (5). The mathematical tool rule is reasonable and practical in design, ingenious and novel in conception, and easy and convenient to use, enables an arc drawing device to match with the protractor in usage to perform the drawing of angles and straight lines, improves drawing efficiency and accuracy when teachers teach, and is convenient to carry.
Description
Technical field
The utility model relates to a kind of mathematical tool chi.
Background technology
At present, the teacher particularly drawing tools used in teaching process of mathematics teacher is ruler, set square, protractor, compasses temple, its shortcoming be purposes single, carry inconvenience, and to use respectively, if it is just very inconvenient to measure angle and the picture straight line of large-size, sometimes cause measure error and setting-out error.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of multi-functional mathematical tool chi is provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of mathematical tool chi, comprise a set square 1, be connected with semicircular protractor 2 in set square 1, it is characterized in that, be provided with expansion link 3 on the right angle of set square 1 end points, expansion link 3 is connected with set square 1 by rotating shaft 4, and expansion link 3 tops are provided with can be along the flexible sliding sleeve 5 of expansion link, can place chalk 6 on sliding sleeve 5 tops.
The beneficial effects of the utility model are: practicality reasonable in design, and the novelty that is skillfully constructed, easy to use, drawing the arc device can be used in conjunction with protractor, carries out the making of angle straight line, and the utility model has improved mapping efficient and the accuracy rate of teachers ' teaching, easy to carry, very practical.
Description of drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
In figure, 1 set square, 2 protractors, 3 expansion links, 4 rotating shafts, 5 sliding sleeves, 6 chalks.
The specific embodiment
As shown in Figure 1, a kind of mathematical tool chi, comprise a set square 1, be connected with semicircular protractor 2 in set square 1, it is characterized in that, be provided with expansion link 3 on the right angle of set square 1 end points, expansion link 3 is connected with set square 1 by rotating shaft 4, expansion link 3 tops are provided with can be along the flexible sliding sleeve 5 of expansion link, can place chalk 6 on sliding sleeve 5 tops.
Claims (1)
1. mathematical tool chi, comprise a set square (1), be connected with semicircular protractor (2) in set square (1), it is characterized in that, be provided with expansion link (3) on the right angle end points of set square (1), expansion link (3) is connected with set square (1) by rotating shaft (4), and expansion link (3) top is provided with can be along the flexible sliding sleeve (5) of expansion link, can place chalk (6) on sliding sleeve (5) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220749120 CN202986539U (en) | 2012-12-15 | 2012-12-15 | Mathematical tool rule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220749120 CN202986539U (en) | 2012-12-15 | 2012-12-15 | Mathematical tool rule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202986539U true CN202986539U (en) | 2013-06-12 |
Family
ID=48557751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220749120 Expired - Fee Related CN202986539U (en) | 2012-12-15 | 2012-12-15 | Mathematical tool rule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202986539U (en) |
-
2012
- 2012-12-15 CN CN 201220749120 patent/CN202986539U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131215 |