CN202319551U - Drawing instrument for sector teaching - Google Patents
Drawing instrument for sector teaching Download PDFInfo
- Publication number
- CN202319551U CN202319551U CN2011204506419U CN201120450641U CN202319551U CN 202319551 U CN202319551 U CN 202319551U CN 2011204506419 U CN2011204506419 U CN 2011204506419U CN 201120450641 U CN201120450641 U CN 201120450641U CN 202319551 U CN202319551 U CN 202319551U
- Authority
- CN
- China
- Prior art keywords
- supporting leg
- teaching
- circle
- drawing instrument
- circumference
- 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 drawing instrument for sector teaching and belongs to the technical field of teaching aids. The drawing instrument for sector teaching comprises a circle centre supporting leg and a circumference supporting leg, wherein the top ends of the circle centre supporting leg and the circumference supporting leg are respectively hinged on a hinge rack, a rotating handle is arranged on the hinge rack, a length staff gauge is laid on the circle centre supporting leg, a semicircular protractor is arranged on one side of the circumference supporting leg, the semicircular protractor is clamped on the circumference supporting leg through a trough, a semicircular ring hole is formed on the semicircular protractor, and a circle centre locating hole is processed at the circle centre of the semicircular protractor. The drawing instrument for sector teaching has the advantages that the length staff gauge and the protractor are additionally arranged on the supporting leg through the supporting leg of the compasses, the integral arrangement ensures that teachers can conveniently carry the teaching aids without chaos and guarantees more efficient application of the drawing instrument, and the drawing instrument is multifunctional; and besides, the drawing instrument can be used for effectively improving the drawing efficiency and is favorable for improving the teaching quality.
Description
Technical field
The utility model relates to the teaching equipment technical field, and the figure device is made in specifically a kind of ruler teaching.
Background technology
General, in the several teaching process aspect mathematics, the teacher often uses ruler to be figure and gives lectures and impart knowledge to students; But ruler is figure and need be used a set square and compasses writing on the blackboard on blackboard to be figure simultaneously; Its two equipment are used alternatingly quite loaded down with trivial details, and carry inconvenience, and especially the frequent exchange when being figure makes that to be figure dumb; Consume time in classroom, influence Classroom Teaching.
Summary of the invention
The technical assignment of the utility model is the deficiency that solves prior art, provides a kind of ruler teaching to make the figure device.
The technical scheme of the utility model realizes that by following mode the figure device is made in this ruler teaching, and its structure comprises center of circle supporting leg, circumference supporting leg; The top of center of circle supporting leg, circumference supporting leg is hinged on respectively on the frame, and the hinge frame is provided with turning handle, is laid with length scales on the supporting leg of the center of circle; Circumference supporting leg one side is provided with semicircular protractor; Semicircular protractor is connected on the circumference supporting leg through draw-in groove, offers the semicircle annular distance on the semicircular protractor, and the circle centre position of semicircular protractor offers center of circle locating hole.
The end of center of circle supporting leg is provided with center of circle pin.
Circumference supporting leg end is provided with the paintbrush contact.
The beneficial effect that the utility model is compared with prior art produced is:
The supporting leg that the figure device utilizes compasses itself is done in this ruler teaching; Additional length scales and the protractor of being provided with on supporting leg, it is convenient and swift, not in disorder that the setting of integrated form like this can make the teacher wear teaching aid; Use more to such an extent that newly answer hand; One-object-many-purposes effectively improves and does figure efficient, helps to improve the quality of teaching.
The teaching of this ruler do the figure device reasonable in design, simple in structure, safe and reliable, easy to use, be easy to safeguard, have good value for applications.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model.
Mark in the accompanying drawing is represented respectively:
1, center of circle supporting leg, 2, the circumference supporting leg, 3, the hinge frame, 4, turning handle, 5, length scales, 6, semicircular protractor, 7, draw-in groove, 8, the semicircle annular distance, 9, center of circle locating hole, 10, center of circle pin, 11, the paintbrush contact.
The specific embodiment
Below in conjunction with accompanying drawing the figure device is made in the ruler teaching of the utility model and done following the detailed description.
Shown in accompanying drawing 1, the figure device is made in the teaching of the ruler of the utility model, and its structure comprises center of circle supporting leg 1, circumference supporting leg 2; The top of center of circle supporting leg 1, circumference supporting leg 2 is hinged on respectively on the frame 3, and hinge frame 3 is provided with turning handle 4, is laid with length scales 5 on the center of circle supporting leg 1; Circumference supporting leg 2 one sides are provided with semicircular protractor 6; Semicircular protractor 6 is connected on the circumference supporting leg 2 through draw-in groove 7, offers semicircle annular distance 8 on the semicircular protractor 6, and the circle centre position of semicircular protractor 6 offers center of circle locating hole 9.The end of center of circle supporting leg 1 is provided with center of circle pin 10.Circumference supporting leg 2 ends are provided with paintbrush contact 11.
Claims (3)
1. the figure device is made in the ruler teaching, it is characterized in that comprising center of circle supporting leg, circumference supporting leg, and the top of center of circle supporting leg, circumference supporting leg is hinged on the frame respectively; The hinge frame is provided with turning handle; Be laid with length scales on the supporting leg of the center of circle, circumference supporting leg one side is provided with semicircular protractor, and semicircular protractor is connected on the circumference supporting leg through draw-in groove; Offer the semicircle annular distance on the semicircular protractor, the circle centre position of semicircular protractor offers center of circle locating hole.
2. the figure device is made in ruler teaching according to claim 1, it is characterized in that the end of center of circle supporting leg is provided with center of circle pin.
3. the figure device is made in ruler teaching according to claim 1, it is characterized in that circumference supporting leg end is provided with the paintbrush contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204506419U CN202319551U (en) | 2011-11-03 | 2011-11-03 | Drawing instrument for sector teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204506419U CN202319551U (en) | 2011-11-03 | 2011-11-03 | Drawing instrument for sector teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202319551U true CN202319551U (en) | 2012-07-11 |
Family
ID=46431543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204506419U Expired - Fee Related CN202319551U (en) | 2011-11-03 | 2011-11-03 | Drawing instrument for sector teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202319551U (en) |
-
2011
- 2011-11-03 CN CN2011204506419U patent/CN202319551U/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: 20120711 Termination date: 20121103 |