CN2414921Y - Multifunctional triangle - Google Patents
Multifunctional triangle Download PDFInfo
- Publication number
- CN2414921Y CN2414921Y CN 00206188 CN00206188U CN2414921Y CN 2414921 Y CN2414921 Y CN 2414921Y CN 00206188 CN00206188 CN 00206188 CN 00206188 U CN00206188 U CN 00206188U CN 2414921 Y CN2414921 Y CN 2414921Y
- Authority
- CN
- China
- Prior art keywords
- angle
- circle
- center
- carved
- base
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a multifunctional three-angle ruler to the technical field of teaching appliances, which is characterized in that the bottom edge of a three-angle ruler is provided with a guiding groove in which a slide arm is nested by a guiding rail, the external end of the slide arm is provided with a chalk sleeve, scale lines are carved on the slide arm, and the lower bottom of the bottom edge is provided with a positioning needle of the centre of a circle in a mode of paralleling with the chalk sleeve. Long straight edges and sloped edges of three inner angles of the three-angle ruler are respectively carved with carving grooves for measuring an angle, the center of the bottom edge is carved with the centre of the circle for measuring the angle, wherein, a vertex of a right angle can be used as the centre of the circle by the carving groove for measuring the angle of the sloped edge. The utility model has various functions of the three-angle ruler, a protractor and a pair of compasses and has the advantages of convenient carryover, simple operation, labor saving and time saving.
Description
The utility model belongs to the teaching equipment technical field, is a kind of multi-functional triangular ruler.
In the school mathematics teaching, set square, protractor and compasses that the teacher uses demonstration, draws, apparatus all is absolutely necessary, last class hour of teacher usually needs to carry simultaneously three kinds of different apparatus to the classroom, also needs constantly to use instead tool on the classroom, carry inconvenience, operation inconvenience, time-consuming.
The purpose of this utility model provides a kind of multi-functional triangular ruler, and this set square should have set square, protractor and compasses multiple use, thereby easy to carry, simple to operate, saving of work and time.
Technical solution adopted in the utility model is improved on the basis of existing set square, guide groove is offered on base at set square, be nested with travelling arm by guide rail in the guide groove, the outer end of travelling arm is provided with chalk sleeve, carve on the travelling arm and be provided with graduation mark, go to the bottom on the base and chalk sleeve is provided with center of circle pilot pin abreast.The long straight flange of triangle and hypotenuse are carved respectively and are provided with the angulation cutting in set square, carve at the center, base and are provided with the angulation center of circle, and wherein the angulation cutting of hypotenuse can be the center of circle with the summit, right angle.
Because the utility model has been taked technique scheme, compares with existing mathematical education apparatus, has set square, protractor and compasses multiple use, thereby easy to carry, simple to operate, saving of work and time.
Below in conjunction with accompanying drawing and example specific structural features of the present utility model is described further.
Fig. 1 represents general assembly structural representation of the present utility model.
As shown in Figure 1, the utlity model has the set square that long straight flange 1, base 2 and hypotenuse 3 are formed, the set square outward flange is carved and is provided with scale.An interior triangle 4 is formed in the inboard of three arms of angle.Its main feature is to offer guide groove 5 on base 2, is nested with travelling arm 7 by guide rail 6 in the guide groove 5, and the outer end of travelling arm 7 is provided with chalk sleeve 8, carves on the travelling arm and is provided with graduation mark 9, and the line that makes zero on the travelling arm is corresponding with the line that makes zero on the base 2.2 go to the bottom and chalk sleeve is provided with center of circle pilot pin 10 abreast on the base.
The long straight flange 1 of triangle and hypotenuse 3 are carved respectively and are provided with angulation cutting 11 in set square, and 2 centers are carved and to be provided with the angulation center of circle 12 on the base, and wherein the shown angle of angulation cutting of hypotenuse 3 is to be the center of circle with the summit, right angle, and base 2 is a zero degree.
Claims (2)
1, a kind of multi-functional triangular ruler has set square, it is characterized in that offering guide groove on the base of set square, be nested with travelling arm by guide rail in the guide groove, the outer end of travelling arm is provided with chalk sleeve, carves on the travelling arm and is provided with graduation mark, goes to the bottom on the base and chalk sleeve is provided with center of circle pilot pin abreast.
2, a kind of multi-functional three-use ruler as claimed in claim 1 is characterized in that the long straight flange of triangle in set square and hypotenuse are carved respectively to be provided with the angulation cutting that carve at the center, base and be provided with the angulation center of circle, wherein the angulation cutting of hypotenuse can the summit, right angle be the center of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00206188 CN2414921Y (en) | 2000-03-17 | 2000-03-17 | Multifunctional triangle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00206188 CN2414921Y (en) | 2000-03-17 | 2000-03-17 | Multifunctional triangle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2414921Y true CN2414921Y (en) | 2001-01-17 |
Family
ID=33574189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00206188 Expired - Fee Related CN2414921Y (en) | 2000-03-17 | 2000-03-17 | Multifunctional triangle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2414921Y (en) |
-
2000
- 2000-03-17 CN CN 00206188 patent/CN2414921Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |