CN204414937U - A kind of Simple angle drawing device - Google Patents
A kind of Simple angle drawing device Download PDFInfo
- Publication number
- CN204414937U CN204414937U CN201420682575.1U CN201420682575U CN204414937U CN 204414937 U CN204414937 U CN 204414937U CN 201420682575 U CN201420682575 U CN 201420682575U CN 204414937 U CN204414937 U CN 204414937U
- Authority
- CN
- China
- Prior art keywords
- angle
- rounded tabs
- cylinder
- protractors
- drawing device
- 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
A kind of Simple angle drawing device, comprise two semicircular protractors, the initial point place of described protractor is provided with perforation, and the initial point of two protractors is overlapped and is articulated by drive-connecting shaft; Described drive-connecting shaft comprises axle sleeve and axle core, and described axle sleeve comprises the first rounded tabs and is located at the hollow circular cylinder in the first rounded tabs, and described hollow circular cylinder inwall is provided with internal thread; Described axle core comprises the second rounded tabs and is located at the solid cylinder in the second rounded tabs, and the outer wall of described solid cylinder is provided with external screw thread, described solid cylinder and hollow cylinder threaded engagement.When utilizing angle drawing device to draw angle, the part of two protractor overlaps is required angle, and according to diagonal angle principle, the angle of lap can be gone out by the angle unicursal formed between two protractors.
Description
Technical field
The utility model relates to stationery, especially a kind of Simple angle drawing device.
Background technology
In students study, often need the angle of picture specified angle, existingly lack the stationery being specifically designed to picture angle, students often utilization hornwork carries out picture angle, its method of drawing angle first sets an initial point, and then the initial point of utilization hornwork overlaps with the initial point of setting; Two points of the scale selected angle scope indicated on protractor again; Finally these two points and initial point line can be obtained the angle needed.The method that this kind draws angle comparatively bothers, and can not disposablely make angle draw.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of Simple angle drawing device, can be drawn at the angle of specified angle easily and efficiently.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of Simple angle drawing device, comprises two semicircular protractors, and the initial point place of described protractor is provided with perforation, and the initial point of two protractors is overlapped and is articulated by drive-connecting shaft; Described drive-connecting shaft comprises axle sleeve and axle core, and described axle sleeve comprises the first rounded tabs and is located at the hollow circular cylinder in the first rounded tabs, and described hollow circular cylinder inwall is provided with internal thread; Described axle core comprises the second rounded tabs and is located at the solid cylinder in the second rounded tabs, and the outer wall of described solid cylinder is provided with external screw thread, described solid cylinder and hollow cylinder threaded engagement.Utility model works principle: semicircular protractor is existing stationery, protractor has the scale of 0 ~ 180 °, the two is coupled together can be become angle drawing device by drive-connecting shaft.When utilizing angle drawing device to draw angle, the part of two protractor overlaps is required angle, the principle equal according to diagonal angle, and the angle of lap can be gone out by the angle unicursal formed between two protractors.
As improvement, described first rounded tabs and the second rounded tabs are provided with flat recess or cross recess, conveniently utilize screwdriver to dismantle drive-connecting shaft, thus by two protractors separately.
The beneficial effect that the utility model is compared with prior art brought is:
When utilizing angle drawing device to draw angle, the part of two protractor overlaps is required angle, and according to diagonal angle principle, the angle of lap can be gone out by the angle unicursal formed between two protractors.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is drive-connecting shaft decomposition view.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model is described in further detail.
As shown in Figure 1, a kind of Simple angle drawing device, comprises two semicircular protractors, and the initial point O place of described protractor is provided with perforation, and the initial point O of two protractors is overlapped and is articulated by drive-connecting shaft 2.As shown in Figure 2, described drive-connecting shaft 2 comprises axle sleeve 22 and axle core 21, the hollow circular cylinder 222 that described axle sleeve 22 comprises the first rounded tabs 221 and is located in the first rounded tabs 221, and described hollow circular cylinder 222 inwall is provided with internal thread; The solid cylinder 212 that described axle core 21 comprises the second rounded tabs 211 and is located in the second rounded tabs 211, the outer wall of described solid cylinder 212 is provided with external screw thread, described solid cylinder 212 and hollow cylinder threaded engagement.Described first rounded tabs 221 and the second rounded tabs 211 are provided with flat recess or cross recess, conveniently utilize screwdriver to dismantle drive-connecting shaft 2, thus by two protractors separately.
Utility model works principle: semicircular protractor is existing stationery, protractor has the scale of 0 ~ 180 °, the two is coupled together can be become angle drawing device by drive-connecting shaft 2.When utilizing angle drawing device to draw angle, the part of two protractor overlaps is required angle a1, the principle equal according to diagonal angle, and the angle of lap can go out required angle by the angle a2 unicursal formed between two protractors.
Claims (2)
1. a Simple angle drawing device, is characterized in that: comprise two semicircular protractors, and the initial point place of described protractor is provided with perforation, and the initial point of two protractors is overlapped and is articulated by drive-connecting shaft; Described drive-connecting shaft comprises axle sleeve and axle core, and described axle sleeve comprises the first rounded tabs and is located at the hollow circular cylinder in the first rounded tabs, and described hollow circular cylinder inwall is provided with internal thread; Described axle core comprises the second rounded tabs and is located at the solid cylinder in the second rounded tabs, and the outer wall of described solid cylinder is provided with external screw thread, described solid cylinder and hollow cylinder threaded engagement.
2. a kind of Simple angle drawing device according to claim 1, is characterized in that: described first rounded tabs and the second rounded tabs are provided with flat recess or cross recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420682575.1U CN204414937U (en) | 2014-11-16 | 2014-11-16 | A kind of Simple angle drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420682575.1U CN204414937U (en) | 2014-11-16 | 2014-11-16 | A kind of Simple angle drawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204414937U true CN204414937U (en) | 2015-06-24 |
Family
ID=53465337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420682575.1U Expired - Fee Related CN204414937U (en) | 2014-11-16 | 2014-11-16 | A kind of Simple angle drawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204414937U (en) |
-
2014
- 2014-11-16 CN CN201420682575.1U patent/CN204414937U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20151116 |
|
| EXPY | Termination of patent right or utility model |