CN203198516U - Novel precise compass - Google Patents
Novel precise compass Download PDFInfo
- Publication number
- CN203198516U CN203198516U CN 201320046698 CN201320046698U CN203198516U CN 203198516 U CN203198516 U CN 203198516U CN 201320046698 CN201320046698 CN 201320046698 CN 201320046698 U CN201320046698 U CN 201320046698U CN 203198516 U CN203198516 U CN 203198516U
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- CN
- China
- Prior art keywords
- compasses
- compass
- connecting rod
- leg
- gear
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- Expired - Fee Related
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a novel precise compass which comprises a compass handle, a compass shaft, a compass support leg and a compass pen leg. The compass shaft is connected with the compass support leg and the compass pen leg through a connecting rod device, and a coarse adjustment gear, a fine adjustment gear and a fixed gear are mounted on the compass shaft and connected with the connecting rod device. When the novel precise compass is used, the coarse adjustment gear and the fine adjustment gear rotate, and then the fixed gear rotates, so that the compass support leg and the compass pen leg are perpendicular to a paper surface. When a graph is drawn, the distance between the compass support leg and the compass pen leg cannot be changed, precision of a drawn circle is ensured, and the radius of the circle can be accurately determined.
Description
Technical field
The utility model relates to the study article class, especially a kind of novel precise compasses.
Background technology
Compasses are the instruments of draw circles or string in mathematics and drawing, are usually used in construction with ruler and compasses.Draw bowlder, people measure radius of a circle with ruler earlier usually, again the distance of two pin of compasses are transferred to radius length.Yet people can't mix up the distance of two pin exactly.In the existing patent, tape measure is installed on the compasses, because compasses leg and a compasses pin can't be perpendicular with paper, causes tape measure to parallel with the line of compasses leg and a compasses pin, can not guarantee the accuracy of tape measure.In addition, draw bowlder, the rotation of compasses can cause the compasses two foot distance from change, cause the circle of drawing accurate inadequately.
The utility model content
The utility model purpose provides a kind of novel precise compasses, make that a compasses leg and compasses pin and paper are perpendicular, during mapping, the distance between compasses leg and the compasses pin can not change, thereby guarantee the circular precision that draws, also can determine radius of a circle exactly.
To achieve these goals, the technical solution of the utility model is: a kind of novel precise compasses, comprise compasses handle, compass shaft, compasses leg and a compasses pin, described compass shaft links to each other with the compasses leg by linkage, described compass shaft links to each other with a compasses pin by linkage, coarse adjustment gear, fine tuning gear and fixed gear are installed on the described compass shaft, and described coarse adjustment gear, fine tuning gear and fixed gear and linkage join.
A described compasses leg top and compasses pin top all is provided with rotating shaft I and rotating shaft II, the rotating shaft I is positioned at rotating shaft II top, described linkage comprises tooth bar, connecting rod I, connecting rod II and connecting rod III, connecting rod III lower end is connected in the rotating shaft I, connecting rod III upper end is connected in compass shaft, connecting rod II lower end is connected in the rotating shaft II, connecting rod II upper inner is provided with journal stirrup, the connecting rod II links to each other with connecting rod I lower end by journal stirrup, connecting rod I upper end links to each other with tooth bar, tooth bar is positioned at compass shaft, and tooth bar one side and coarse adjustment gear join, and tooth bar another side and fine tuning gear join.
Described compasses leg top is movably connected on a foot support, and a described compasses pin top is movably connected on a foot support.
A described compasses pin is provided with tape measure.
During use, rotate earlier the coarse adjustment gear, coarse adjustment gear driven linkage, linkage drive compasses leg and a compasses human hair combing waste and give birth to mobilely, make distance between compasses leg and the compasses pin near the length of required radius; Rotate the fine tuning gear again, fine tuning gear driven linkage, linkage drive the compasses leg and a compasses human hair combing waste is living mobile, makes the distance between compasses leg and the compasses pin reach the length of required radius; The rotational fixation gear makes that the distance between the compasses bipod is constant, thereby has guaranteed the precision of circle.
Description of drawings
Fig. 1 is the overall structure schematic diagram of novel precise compasses;
Fig. 2 is the cutaway view of A part among Fig. 1;
Fig. 3 is the cutaway view of B part among Fig. 1.
The specific embodiment
As shown in Figure 1, a kind of novel precise compasses, comprise compasses 1, compass shaft 2, compasses leg 3 and a compasses pin 4, described compass shaft 2 links to each other with compasses leg 3 by linkage, described compass shaft 2 links to each other with a compasses pin 4 by linkage, coarse adjustment gear 5, fine tuning gear 6 and fixed gear 7 are installed on the described compass shaft 2, and described coarse adjustment gear 5, fine tuning gear 6 and fixed gear 7 join with linkage.The user rotates coarse adjustment gear 5 earlier, and coarse adjustment gear 5 drives compasses leg 3 by linkage and a compasses pin 4 is moved, and makes distance between compasses leg 3 and the compasses pin 4 near required radius length; Rotate fine tuning gear 6 again, fine tuning gear 6 drives compasses leg 3 by linkage and a compasses pin 4 is moved, and makes that the distance between compasses leg 3 and the compasses pin 4 reaches required radius length; Rotational fixation gear 7 makes that the distance between compasses leg 3 and the compasses pin 4 is constant.
As shown in Figures 2 and 3, described compasses leg 3 tops and a compasses pin 4 tops all are provided with rotating shaft I 8 and rotating shaft II 9, rotating shaft I 8 is positioned at rotating shaft II 9 tops, described linkage comprises tooth bar 10, connecting rod I 11, connecting rod II 12 and connecting rod III 13, connecting rod III 13 lower ends are connected in rotating shaft I 8, connecting rod III 13 upper ends are connected in compass shaft 2, connecting rod II 12 lower ends are connected in rotating shaft II 9, connecting rod II 12 upper inner are provided with journal stirrup 14, connecting rod II 12 links to each other with connecting rod I 11 lower ends by journal stirrup 14, and connecting rod I 11 upper ends link to each other with tooth bar 10, and tooth bar 10 is positioned at compass shaft 2, tooth bar 10 1 sides and coarse adjustment gear 5 join, and tooth bar 10 another sides and fine tuning gear 6 join.Rotation coarse adjustment gear 5 or fine tuning gear 6, coarse adjustment gear 5 or fine tuning gear 6 drive tooth bar 10 and move up and down, and tooth bar 10 drivening rod I 11 move, and connecting rod I 11 is by journal stirrup 14 drivening rod II 12, compasses leg 3 an and compasses pin 4 is moved, and then controls opening or closure of compasses.Compasses leg 3 an and compasses pin 4 is perpendicular with paper, thereby guarantees the circular precision that draws, and also can determine radius of a circle exactly.
Described compasses leg 3 tops are movably connected on a foot support 15, and a described compasses pin 4 tops are movably connected on a foot support 16.Compasses leg 3 an and compasses pin 4 can freely replace, and the user determines the orientation of compasses leg 3 and a compasses pin 4 according to individual's custom.A described compasses pin 4 is provided with tape measure 17.Draw back tape measure 17, the user can determine the distance between compasses leg 3 and the compasses pin 4, thereby determines radius of a circle.
Claims (4)
1. novel precise compasses, comprise compasses handle, compass shaft, compasses leg and a compasses pin, it is characterized in that: described compass shaft links to each other with the compasses leg by linkage, described compass shaft links to each other with a compasses pin by linkage, coarse adjustment gear, fine tuning gear and fixed gear are installed on the described compass shaft, and described coarse adjustment gear, fine tuning gear and fixed gear and linkage join.
2. novel precise compasses as claimed in claim 1, it is characterized in that: a described compasses leg top and compasses pin top all is provided with rotating shaft I and rotating shaft II, the rotating shaft I is positioned at rotating shaft II top, described linkage comprises tooth bar, the connecting rod I, connecting rod II and connecting rod III, connecting rod III lower end is connected in the rotating shaft I, connecting rod III upper end is connected in compass shaft, connecting rod II lower end is connected in the rotating shaft II, connecting rod II upper inner is provided with journal stirrup, the connecting rod II links to each other with connecting rod I lower end by journal stirrup, and connecting rod I upper end links to each other with tooth bar, and tooth bar is positioned at compass shaft, tooth bar one side and coarse adjustment gear join, and tooth bar another side and fine tuning gear join.
3. novel precise compasses as claimed in claim 1 is characterized in that: described compasses leg top is movably connected on a foot support, and a described compasses pin top is movably connected on a foot support.
4. as claim 1 or 2 or 3 described novel precise compasses, it is characterized in that: a described compasses pin is provided with tape measure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320046698 CN203198516U (en) | 2013-01-29 | 2013-01-29 | Novel precise compass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320046698 CN203198516U (en) | 2013-01-29 | 2013-01-29 | Novel precise compass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203198516U true CN203198516U (en) | 2013-09-18 |
Family
ID=49142653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320046698 Expired - Fee Related CN203198516U (en) | 2013-01-29 | 2013-01-29 | Novel precise compass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203198516U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935162A (en) * | 2014-02-08 | 2014-07-23 | 汤承原 | Compass capable of drawing six colors through gear adjustment |
| CN106739682A (en) * | 2015-11-25 | 2017-05-31 | 上海市格致中学 | A kind of compasses being convenient for measuring |
| CN107933160A (en) * | 2017-11-27 | 2018-04-20 | 郑屹 | A kind of intelligent tutoring compasses |
-
2013
- 2013-01-29 CN CN 201320046698 patent/CN203198516U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935162A (en) * | 2014-02-08 | 2014-07-23 | 汤承原 | Compass capable of drawing six colors through gear adjustment |
| CN103935162B (en) * | 2014-02-08 | 2015-08-26 | 温州市张衡科技服务有限公司 | A kind of gear regulates six look compasses |
| CN106739682A (en) * | 2015-11-25 | 2017-05-31 | 上海市格致中学 | A kind of compasses being convenient for measuring |
| CN107933160A (en) * | 2017-11-27 | 2018-04-20 | 郑屹 | A kind of intelligent tutoring compasses |
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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: 20130918 Termination date: 20140129 |