CN202862936U - Protractor - Google Patents
Protractor Download PDFInfo
- Publication number
- CN202862936U CN202862936U CN 201220552734 CN201220552734U CN202862936U CN 202862936 U CN202862936 U CN 202862936U CN 201220552734 CN201220552734 CN 201220552734 CN 201220552734 U CN201220552734 U CN 201220552734U CN 202862936 U CN202862936 U CN 202862936U
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- CN
- China
- Prior art keywords
- protractor
- pointer
- angle
- sliding block
- sliding groove
- 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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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a protractor which comprises a protractor body and an angle scale arranged on the protractor body. A semi-circular-shaped sliding groove is arranged in the protractor, the circle center of the sliding groove is overlapped with that of the protractor body, and a sliding block in match with the sliding groove is arranged inside the sliding groove. The protractor further comprises a pointer, one end of the pointer is hinged on the circle center of the protractor, and the other end of the pointer is fixedly connected with the sliding block. The protractor has the advantages that the protractor is simple in structure, when being used for reading angle, the zero graduation line of the angle index of the protractor is enabled to be aligned at one edge of the angle, then the sliding block is slided, the sliding block drives the pointer to rotate until the pointer is overlapped with the other edge of the angle, at the moment, the angle scale corresponded by the pointer is the measured angle. Due to the fact that the pointer is used as a reference, manual factors are reduced during the reading process, and accuracy of the read angle value is high.
Description
Technical field
The utility model relates to a kind of mathematical studying instrument, particularly a kind of protractor.
Background technology
Protractor is a kind of mathematical studying instrument commonly used, its Main Function is to measure angle, existing protractor is when measuring angle, normally the zero graduation line with protractor aligns with a limit at angle, then with the other limit at angle over against angle index read out, be the angle at this angle, still, because lack necessary reference substance, the angle value degree of accuracy of directly reading is not high.
Summary of the invention
Problem to be solved in the utility model is: provide a kind of simple in structure, by pointer reading angular thereby the high protractor of the degree of accuracy.
In order to solve the problems of the technologies described above, protractor of the present utility model, comprise protractor body and the angle index that is arranged on the protractor body, described protractor body is provided with the chute of a semicircular arc, the center of circle of the center of circle of described chute and protractor body coincides, and is provided with a slide block that is complementary with chute in the described chute, also comprises a pointer, one end of described pointer is articulated in the circle centre position of protractor body, and an other end of described pointer is fixedly connected with slide block.
The beneficial effect that the utility model is obtained is: (1) is simple in structure; (2) when reading angular, the zero graduation line of the angle index on the protractor body is alignd with a limit at angle, then sliding slider, drive pointer by slide block and rotate, until pointer overlaps fully with an other limit at angle, at this moment, the right angle index of reading pointer is measured angle, owing to have pointer as a reference, thereby reduced the human factor in the reading process, the angle value degree of accuracy of reading is high.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, protractor body, 2, pointer, 3, angle index, 4, chute, 5, slide block.
The specific embodiment
As shown in Figure 1, protractor of the present utility model, comprise protractor body 1 and the angle index 3 that is arranged on the protractor body 1, described protractor body 1 is provided with the chute 4 of a semicircular arc, the center of circle of the center of circle of described chute 4 and protractor body 1 coincides, and is provided with a slide block 5 that is complementary with chute 4 in the described chute 4, also comprises a pointer 2, one end of described pointer 2 is articulated in the circle centre position of protractor body 1, and an other end of described pointer is fixedly connected with slide block 5.
Protractor of the present utility model, simple in structure, in the time of reading angular, the zero graduation line of the angle index 3 on the protractor body 1 is alignd with a limit at angle, then sliding slider 5, drive pointers 2 by slide block 5 and rotate, until pointer 2 overlaps fully with an other limit at angle, at this moment, reading pointer 2 right angle indexs 3 are measured angle, owing to pointer 2 is arranged as a reference, thereby reduced the human factor in the reading process, the angle value degree of accuracy of reading is high.
The utility model is not limited to above-mentioned embodiment, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, all fall within the protection domain of the present utility model.
Claims (1)
1. protractor, comprise protractor body (1) and be arranged on angle index (3) on the protractor body (1), it is characterized in that: described protractor body (1) is provided with the chute (4) of a semicircular arc, the center of circle of the center of circle of described chute (4) and protractor body (1) coincides, be provided with a slide block (5) that is complementary with chute (4) in the described chute (4), also comprise a pointer (2), one end of described pointer (2) is articulated in the circle centre position of protractor body (1), and an other end of described pointer is fixedly connected with slide block (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220552734 CN202862936U (en) | 2012-10-17 | 2012-10-17 | Protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220552734 CN202862936U (en) | 2012-10-17 | 2012-10-17 | Protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202862936U true CN202862936U (en) | 2013-04-10 |
Family
ID=48029684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220552734 Expired - Fee Related CN202862936U (en) | 2012-10-17 | 2012-10-17 | Protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202862936U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406675A (en) * | 2014-12-11 | 2015-03-11 | 广西大学 | Dual-display electronic scale |
| CN106476497A (en) * | 2016-11-10 | 2017-03-08 | 陈征瀚 | A kind of Multifunctional angle scale |
| CN106767338A (en) * | 2017-01-21 | 2017-05-31 | 连云港连锐针布有限公司 | Syringe needle angle protractor |
-
2012
- 2012-10-17 CN CN 201220552734 patent/CN202862936U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406675A (en) * | 2014-12-11 | 2015-03-11 | 广西大学 | Dual-display electronic scale |
| CN106476497A (en) * | 2016-11-10 | 2017-03-08 | 陈征瀚 | A kind of Multifunctional angle scale |
| CN106767338A (en) * | 2017-01-21 | 2017-05-31 | 连云港连锐针布有限公司 | Syringe needle angle protractor |
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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: 20130410 Termination date: 20131017 |