CN204506262U - Student's bevel protractor - Google Patents
Student's bevel protractor Download PDFInfo
- Publication number
- CN204506262U CN204506262U CN201520207903.7U CN201520207903U CN204506262U CN 204506262 U CN204506262 U CN 204506262U CN 201520207903 U CN201520207903 U CN 201520207903U CN 204506262 U CN204506262 U CN 204506262U
- Authority
- CN
- China
- Prior art keywords
- annulus
- centre position
- circle centre
- horizon rule
- set square
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- 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.)
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Abstract
The utility model discloses a kind of student's bevel protractor, comprise an annulus, described annulus is carved with angle, on annulus, 0 angle value place is provided with a horizon rule along annular radii, wherein 0 angle value place of annulus is fixed in one end of horizon rule, the unsettled circle centre position being positioned at annulus in the other end, and circle centre position has one to lower convexity, and the circle centre position of annulus is hinged with a set square, a summit of described set square is movably connected on the end of the horizon rule of annulus circle centre position.After the utility model is located by the projection of circle centre position, facilitate picture circle and associated straight lines and angle line and string portion.Related angle and length value can also be measured simultaneously.Its structure is simple, easy to use.
Description
Technical field
The utility model relates to a kind of bevel protractor, especially a kind of student's bevel protractor.
Background technology
At present, when student draws, the method for drawing angle is generally first draw a limit with ruler, then draws the angle of needs by protractor, not only time-consuming but also the error of generation is increased, and is unfavorable for improving picture efficiency.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, provides a kind of student's bevel protractor.
For achieving the above object, the utility model adopts following technical proposals:
A kind of student's bevel protractor, comprise an annulus, described annulus is carved with angle, on annulus, 0 angle value place is provided with a horizon rule along annular radii, wherein 0 angle value place of annulus is fixed in one end of horizon rule, the unsettled circle centre position being positioned at annulus in the other end, and circle centre position has one to lower convexity, and the circle centre position of annulus is hinged with a set square, a summit of described set square is movably connected on the end of the horizon rule of annulus circle centre position.
Described set square is equilateral triangle, and the internal diameter of its length of side and annulus is isometric.A summit of equilateral triangle chi is movably connected on the end of the horizon rule of annulus circle centre position, and another two summits contact with the inner ring surface of annulus, and can 360 degree of rotations in inner ring, conveniently draws figure and the string of some 60 degree of angles.
Described set square is isosceles right triangle, and its right-angled apices is movably connected on the end of the horizon rule of annulus circle centre position.The length of side of two isosceles and the internal diameter of annulus isometric, and can 360 degree of rotations in inner ring, conveniently draw figure and the string of some an angle of 90 degrees degree.
Described set square is non-right-isosceles triangle, two acute angles one are 30 degree, and another is 60 degree, and its right-angled apices is movably connected on the end of the horizon rule of annulus circle centre position, the internal diameter of the right angle length of side that 30 degree of angles are right and annulus is isometric, and can 360 degree of rotations in inner ring.
Described horizon rule is carved with length value, conveniently measures and determine length value.
Length value is all carved with in each limit of described set square, conveniently determines length value.
After the utility model is located by the projection of circle centre position, facilitate picture circle and associated straight lines and angle line and string portion.Related angle and length value can also be measured simultaneously.Its structure is simple, easy to use.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is embodiment 2 structural representation;
Fig. 3 is embodiment 3 structural representation;
Wherein 1. annulus, 2. horizon rule, 3. set square.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment 1:
As shown in Figure 1, student's bevel protractor, comprise an annulus 1, described annulus 1 is carved with angle, and on annulus 1,0 angle value place is provided with a horizon rule 2 along annular radii, and wherein 0 angle value place of annulus 1 is fixed in one end of horizon rule 2, the unsettled circle centre position being positioned at annulus 1 in the other end, and circle centre position has one to lower convexity, and the circle centre position of annulus 1 is hinged with a set square 3, and a summit of described set square 3 is movably connected on the end of the horizon rule 2 of annulus 1 circle centre position.Horizon rule 2 is carved with length value, conveniently measures and determine length value.Length value is all carved with in each limit of set square 3, conveniently determines length value.
Set square 3 is equilateral triangle, and the internal diameter of its length of side and annulus is isometric.A summit of equilateral triangle chi is movably connected on the end of the horizon rule of annulus circle centre position, and another two summits contact with the inner ring surface of annulus, and can 360 degree of rotations in inner ring, conveniently draws figure and the string of some 60 degree of angles.
Embodiment 2:
As shown in Figure 2, student's bevel protractor, comprise an annulus 1, described annulus 1 is carved with angle, and on annulus 1,0 angle value place is provided with a horizon rule 2 along annular radii, and wherein 0 angle value place of annulus 1 is fixed in one end of horizon rule 2, the unsettled circle centre position being positioned at annulus in the other end, and circle centre position has one to lower convexity, and the circle centre position of annulus 1 is hinged with a set square 3, and a summit of described set square 3 is movably connected on the end of the horizon rule 2 of annulus 1 circle centre position.Horizon rule 2 is carved with length value, conveniently measures and determine length value.Length value is all carved with in each limit of set square 3, conveniently determines length value.
Set square 3 is isosceles right triangle, and its right-angled apices is movably connected on the end of horizon rule 2 of annulus circle centre position.The length of side of two isosceles and the internal diameter of annulus isometric, and can 360 degree of rotations in inner ring, conveniently draw figure and the string of some an angle of 90 degrees degree.
Embodiment 3:
As shown in Figure 3, student's bevel protractor, comprise an annulus 1, described annulus 1 is carved with angle, and on annulus 1,0 angle value place is provided with a horizon rule 2 along annular radii, and wherein 0 angle value place of annulus 1 is fixed in one end of horizon rule 2, the unsettled circle centre position being positioned at annulus 1 in the other end, and circle centre position has one to lower convexity, and the circle centre position of annulus 1 is hinged with a set square 3, and a summit of described set square 3 is movably connected on the end of horizon rule 2 of annulus circle centre position.Horizon rule 2 is carved with length value, conveniently measures and determine length value.Length value is all carved with in each limit of set square 3, conveniently determines length value.
Set square 3 is non-right-isosceles triangle, two acute angles one are 30 degree, and another is 60 degree, and its right-angled apices is movably connected on the end of the horizon rule of annulus circle centre position, the internal diameter of the right angle length of side that 30 degree of angles are right and annulus is isometric, and can 360 degree of rotations in inner ring.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (6)
1. student's bevel protractor, it is characterized in that, comprise an annulus, described annulus is carved with angle, and on annulus, 0 angle value place is provided with a horizon rule along annular radii, and wherein 0 angle value place of annulus is fixed in one end of horizon rule, the unsettled circle centre position being positioned at annulus in the other end, and circle centre position has one to lower convexity, and the circle centre position of annulus is hinged with a set square, and a summit of described set square is movably connected on the end of the horizon rule of annulus circle centre position.
2. student's bevel protractor as claimed in claim 1, it is characterized in that, described set square is equilateral triangle, and the internal diameter of its length of side and annulus is isometric, a summit of equilateral triangle chi is movably connected on the end of the horizon rule of annulus circle centre position, another two summits contact with the inner ring surface of annulus, and can 360 degree of rotations in inner ring.
3. student's bevel protractor as claimed in claim 1, it is characterized in that, described set square is isosceles right triangle, and its right-angled apices is movably connected on the end of the horizon rule of annulus circle centre position, the length of side of two isosceles and the internal diameter of annulus isometric, and can 360 degree of rotations in inner ring.
4. student's bevel protractor as claimed in claim 1, it is characterized in that, described set square is non-right-isosceles triangle, two acute angles one are 30 degree, another is 60 degree, its right-angled apices is movably connected on the end of the horizon rule of annulus circle centre position, and the internal diameter of the right angle length of side that 30 degree of angles are right and annulus is isometric, and can 360 degree of rotations in inner ring.
5. student's bevel protractor as claimed in claim 1, is characterized in that, described horizon rule is carved with length value.
6. student's bevel protractor as claimed in claim 1, is characterized in that, length value is all carved with in each limit of described set square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520207903.7U CN204506262U (en) | 2015-04-08 | 2015-04-08 | Student's bevel protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520207903.7U CN204506262U (en) | 2015-04-08 | 2015-04-08 | Student's bevel protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204506262U true CN204506262U (en) | 2015-07-29 |
Family
ID=53704263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520207903.7U Expired - Fee Related CN204506262U (en) | 2015-04-08 | 2015-04-08 | Student's bevel protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204506262U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030133A (en) * | 2018-06-14 | 2018-12-18 | 华东交通大学 | A kind of method of T-type sample production test specimen |
-
2015
- 2015-04-08 CN CN201520207903.7U patent/CN204506262U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030133A (en) * | 2018-06-14 | 2018-12-18 | 华东交通大学 | A kind of method of T-type sample production test specimen |
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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: 20150729 Termination date: 20160408 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |