CN102963180A - Compasses capable of drawing concentric circles - Google Patents
Compasses capable of drawing concentric circles Download PDFInfo
- Publication number
- CN102963180A CN102963180A CN201210558659XA CN201210558659A CN102963180A CN 102963180 A CN102963180 A CN 102963180A CN 201210558659X A CN201210558659X A CN 201210558659XA CN 201210558659 A CN201210558659 A CN 201210558659A CN 102963180 A CN102963180 A CN 102963180A
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- Prior art keywords
- arm
- concentric circles
- compasses
- rule
- draw
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses compasses capable of drawing concentric circles, and belongs to drawing tools. The compasses comprise a fixed arm, a rotatable arm and a connecting shaft, wherein the fixed arm and the rotatable arm are connected by the connecting shaft; a steel needle is mounted at the lower end of the fixed arm; a refill is fixed at the lower end of the rotatable arm through a screw; a rotating shaft is arranged on the outer side of the rotatable arm; and an auxiliary rotatable arm is connected with the rotatable arm through the rotating shaft. The compasses capable of drawing concentric circles are provided with one fixed arm and two rotatable arms, can draw the concentric circles for one time, is simple and convenient to operate, and can improve the drawing efficiency as the drawn concentric circles are standard.
Description
Technical field
The present invention relates to a kind of compasses, specifically a kind ofly draw concentrically ringed compasses.
Background technology
People often need to draw concentric circles with compasses, but traditional compasses once can only be drawn a circle, and picture efficient is lower.Draw second bowlder when we paint a circle again, need to adjust compasses, often with the draw point displacement, if can not find the center of circle accurately, the concentric circles that draws can be very lack of standardization during adjustment.
Summary of the invention
The object of the present invention is to provide a kind of concentrically ringed compasses of drawing, these compasses are provided with two and rotate the rule arm, can disposablely draw concentric circles.
The present invention solves the technical scheme that its technical problem takes: a kind ofly draw concentrically ringed compasses, comprise the fixed gauge arm, rotate rule arm and connecting axle, described fixed gauge arm is connected by connecting axle with rotation rule arm, draw point is installed in fixed gauge arm lower end, rotate rule arm lower end and be screwed pen core, it is characterized in that the described rotation rule arm outside is provided with a rotating shaft, auxiliary rotary rule arm is by rotating shaft connection of rotating rule arm.
The invention has the beneficial effects as follows: this can be drawn concentrically ringed compasses and be provided with a fixed gauge arm and two rotation rule arms, can disposablely draw concentric circles, and the concentric circles standard criterion that draws is easy and simple to handle, improves drawing efficiency.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: 1 rotates the rule arm, 2 fixed gauge arms, 3 connecting axles, 4 pen cores, 5 rotating shafts, 6 screws, 7 draw points, 8 auxiliary rotaries rule arm.
The specific embodiment
As shown in Figure 1.A kind ofly draw concentrically ringed compasses, comprise fixed gauge arm 2, rotate rule arm 1 and connecting axle 3, described fixed gauge arm 2 is connected by connecting axle 3 with rotation rule arm 1, draw point 7 is installed in fixed gauge arm 2 lower ends, rotate rule arm 1 lower end and pass through fixedly pen core 4 of screw 6, described rotation rule arm 1 outside is provided with rotating shaft 5, one an auxiliary rotaries rule arm 6 by rotating shaft 5 connection of rotatings rule arm 1.
Use this can draw concentrically ringed compasses and draw concentric circles, adjust first the distance of rotating rule arm 1 and fixed gauge arm 2, adjust again auxiliary rotary rule arm 8 and the distance of rotating rule arm 1, draw point 7 is fixed on the paper, be rotationally connected the handle of axle 3 tops, can draw concentric circles.
Claims (1)
1. can draw concentrically ringed compasses for one kind, comprise the fixed gauge arm, rotate rule arm and connecting axle, described fixed gauge arm is connected by connecting axle with rotation rule arm, draw point is installed in fixed gauge arm lower end, rotate rule arm lower end and be screwed pen core, it is characterized in that the described rotation rule arm outside is provided with a rotating shaft, auxiliary rotary rule arm is by rotating shaft connection of rotating rule arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558659XA CN102963180A (en) | 2012-12-20 | 2012-12-20 | Compasses capable of drawing concentric circles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558659XA CN102963180A (en) | 2012-12-20 | 2012-12-20 | Compasses capable of drawing concentric circles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102963180A true CN102963180A (en) | 2013-03-13 |
Family
ID=47793733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210558659XA Pending CN102963180A (en) | 2012-12-20 | 2012-12-20 | Compasses capable of drawing concentric circles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102963180A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2499240Y (en) * | 2001-09-21 | 2002-07-10 | 傅裕 | New compasses |
| CN201080079Y (en) * | 2007-09-25 | 2008-07-02 | 马长征 | Concentric compasses |
| CN201287552Y (en) * | 2008-10-25 | 2009-08-12 | 中北大学 | Concentric double-round compass |
| CN201736652U (en) * | 2010-07-14 | 2011-02-09 | 王玥 | Compass capable of rapidly drawing single circle or double circles |
| CN201856529U (en) * | 2010-10-28 | 2011-06-08 | 张沛文 | Multi-thread compasses |
| CN201998687U (en) * | 2011-03-17 | 2011-10-05 | 西安工业大学 | Concentric compasses |
| CN203110683U (en) * | 2012-12-20 | 2013-08-07 | 王华迪 | Compasses capable of drawing concentric circles |
-
2012
- 2012-12-20 CN CN201210558659XA patent/CN102963180A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2499240Y (en) * | 2001-09-21 | 2002-07-10 | 傅裕 | New compasses |
| CN201080079Y (en) * | 2007-09-25 | 2008-07-02 | 马长征 | Concentric compasses |
| CN201287552Y (en) * | 2008-10-25 | 2009-08-12 | 中北大学 | Concentric double-round compass |
| CN201736652U (en) * | 2010-07-14 | 2011-02-09 | 王玥 | Compass capable of rapidly drawing single circle or double circles |
| CN201856529U (en) * | 2010-10-28 | 2011-06-08 | 张沛文 | Multi-thread compasses |
| CN201998687U (en) * | 2011-03-17 | 2011-10-05 | 西安工业大学 | Concentric compasses |
| CN203110683U (en) * | 2012-12-20 | 2013-08-07 | 王华迪 | Compasses capable of drawing concentric circles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130313 |