CN201736652U - Compass capable of rapidly drawing single circle or double circles - Google Patents
Compass capable of rapidly drawing single circle or double circles Download PDFInfo
- Publication number
- CN201736652U CN201736652U CN2010202648980U CN201020264898U CN201736652U CN 201736652 U CN201736652 U CN 201736652U CN 2010202648980 U CN2010202648980 U CN 2010202648980U CN 201020264898 U CN201020264898 U CN 201020264898U CN 201736652 U CN201736652 U CN 201736652U
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- China
- Prior art keywords
- circle
- supporting rod
- compasses
- rotation pole
- compass
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- Expired - Fee Related
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Abstract
The utility model discloses a compass capable of rapidly drawing a single circle or double circles. The compass comprise a compass frame provided with a rotary shank, a fixed supporting rod is connected right at the lower part of the compass frame, the lower end of the fixed supporting rod is sleeved with a telescopic needle cylinder, a long rotational supporting rod and a short rotational supporting rod which can be symmetrically opened and closed relative to the fixed supporting rod are articulated on the compass frame, the lower end of the long rotational supporting rod is directly connected with a drawing pen, and the lower end of the rotational supporting rod is sleeved with a telescopic supporting rod, the lower end of the telescopic supporting rod is connected with another drawing pen through a steering knuckle. The utility model improves the efficiency on drawing a circle and solves the problem on difficult drawing of a standard circle due to nonuniform force application by people, and people can draw accurate concentric circles by only rotating the compass by one circle and do not need to regulate a radius to draw the other circle after finishing one circle, thereby the efficiency and accuracy on drawing the concentric circles are improved.
Description
Technical field
The utility model relates to drafting instrument, the specifically a kind of compasses that can draw single circle or two circles fast.
Technical background
Compasses are people's indispensable instruments when charting.Existing compasses generally comprise the fixed support of band needle point and the runing rest of band paintbrush, and runing rest rotates a week around fixed support during drawing, and required circle promptly draws.But the angle that inhomogeneous frequent generation circle is signed between a half fixed support and the runing rest because people exert oneself changes, and causes being difficult to the circle of the standard of drawing.And, when people draw concentric circles, need paint the angle of adjusting again between fixed support and the runing rest behind the circle earlier and draw another circle, operation is relatively complicated when using existing compasses to draw concentric circles.
Summary of the invention
The purpose of this utility model is exactly to overcome the deficiency that above-mentioned prior art exists, and kind of the compasses that can draw single circle or two circles fast are provided.
For achieving the above object, the compasses that can draw single circle or two circles fast that the utility model is designed comprise the compasses frame of being with swing handle, are connected with the fixed support bar under the described compasses frame, and the lower end of described fixed support bar is socketed with scalable syringe; Be hinged with the long rotation pole and the short rotation pole that can claim folding on the described compasses frame with respect to the fixed support pole pair, the lower end of described long rotation pole directly links to each other with a paintbrush, the lower end of described short rotation pole is socketed with telescopic support struts, and the lower end of described telescopic support struts links to each other with another paintbrush by knuckle.
Further, the lower end of described fixed support bar is provided with flange, and described flange connects with the back-moving spring that is installed in the scalable syringe, and the upper end of described scalable syringe is provided with the seam that matches with flange.
Again further, adopt the screw thread socket join structure between described short rotation pole and the telescopic support struts.
Again further, adopt the sliding matching structure of locating between described short rotation pole and the telescopic support struts by trip bolt.
Advantage of the present utility model is: have the fixed support bar of scalable syringe as the strong point of drawing circle under being arranged on the compasses frame, the long and short paintbrush that rotates on the pole that adopts equal angles to be arranged in fixed support bar both sides is painted circle, the flexible length of can radius as required adjusting scalable syringe, long rotation pole and short rotation pole are rotated the half cycle corresponding circle that can draw synchronously, the path of drawing circle had reduced half than originally, efficiently solve people's inhomogeneous problem of drawing standard round of causing being difficult to of exerting oneself, significantly improved the efficient of drawing circle simultaneously.When needs are drawn concentric circles, can rotate the adjustment telescopic strut easily, make long rotation pole be in different radial location with the paintbrush of short rotation pole lower end, only promptly finish the drafting of two circles with one heart exactly with rotating compasses one circle, do not need to paint and adjust radius behind the circle again and draw another circle, draw concentrically ringed efficient and accuracy thereby significantly improved.
Description of drawings
Fig. 1 is a kind of structural representation that can draw the compasses of single circle or two circles fast;
Fig. 2 is the working state schematic representation of compasses shown in Figure 1;
Among Fig. 3 Fig. 1 with the sectional structure schematic diagram of the fixed support bar of scalable syringe.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
The compasses that can draw single circle or two circles fast shown in the figure comprise the compasses frame 1 of being with swing handle, are connected with fixed support bar 8 under the compasses frame 1, and the lower end of fixed support bar 8 is socketed with scalable syringe 9.Particularly, the lower end of fixed support bar 8 is provided with flange 11, and flange 11 connects with the back-moving spring 10 that is installed in the scalable syringe 9, and the upper end of scalable syringe 9 is provided with the seam 12 that matches with flange 11.
Be hinged with on the compasses frame 1 and can realize by the pair of engaged gears that is connected long rotation pole 3 and short rotation pole 2 upper ends and be hingedly mounted on the compasses frame 1 with respect to the long rotation pole 3 and the short rotation pole 2 of fixed support bar 8 symmetrical foldings.The lower end of long rotation pole 3 directly links to each other with a paintbrush 13, and the lower end of short rotation pole 2 is socketed with telescopic support struts 5, and the lower end of telescopic support struts 5 links to each other with another paintbrush 7 by knuckle 6.Particularly, can adopt the screw thread socket join structure between above-mentioned short rotation pole 2 and the telescopic support struts 5, also can adopt the sliding matching structure by trip bolt 4 location, the flexible of both realizations is identical with positioning function.
The course of work of the present utility model is: when needs picture bowlder, guarantee that at first short rotation pole 2, telescopic support struts 5 and another paintbrush 7 are on same the straight line, with compasses frame 1 under the hand, make scalable syringe 9 produce flexible, again according to the symmetry angle between drawn radius of a circle adjustment short rotation pole 2 and the long rotation pole 3, the paintbrush that feasible short rotation pole 2 and long rotation pole 3 are connected and the needle point of scalable syringe 9 are in the same plane, rotate the compasses half-turn then, can obtain a Dan Yuan accurately.
When the with one heart two bowlders of needs picture, radius size according to drawn concentrically ringed interior circle and cylindrical, adjust the flexible distance of telescopic support struts 5 on the short rotation pole 2 earlier, adjust the angle between another paintbrush 7 and the telescopic support struts 5 then, adjust the opening angle between short rotation pole 2 and the long rotation pole 3 again, the paintbrush that assurance short rotation pole 2 and long rotation pole 3 are connected and the needle point of scalable syringe 9 are in the same plane, rotate one week of compasses then, promptly obtain concentric accurately two circles.
Claims (4)
1. the compasses that can draw single circle or two circles fast comprise the compasses frame (1) of being with swing handle, and it is characterized in that: be connected with fixed support bar (8) under the described compasses frame (1), the lower end of described fixed support bar (8) is socketed with scalable syringe (9); Being hinged with on the described compasses frame (1) can be with respect to the long rotation pole (3) and the short rotation pole (2) of the symmetrical folding of fixed support bar (8), the lower end of described long rotation pole (3) directly links to each other with a paintbrush (13), the lower end of described short rotation pole (2) is socketed with telescopic support struts (5), and the lower end of described telescopic support struts (5) links to each other with another paintbrush (7) by knuckle (6).
2. the compasses that can draw single circle or two circles fast according to claim 1, it is characterized in that: the lower end of described fixed support bar (8) is provided with flange (11), described flange (11) connects with the back-moving spring (10) that is installed in the scalable syringe (9), and the upper end of described scalable syringe (9) is provided with the seam (12) that matches with flange (11).
3. the compasses that can draw single circle or two circles fast according to claim 1 and 2 is characterized in that: adopt the screw thread socket join structure between described short rotation pole (2) and the telescopic support struts (5).
4. the compasses that can draw single circle or two circles fast according to claim 1 and 2 is characterized in that: adopt the sliding matching structure by trip bolt (4) location between described short rotation pole (2) and the telescopic support struts (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202648980U CN201736652U (en) | 2010-07-14 | 2010-07-14 | Compass capable of rapidly drawing single circle or double circles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202648980U CN201736652U (en) | 2010-07-14 | 2010-07-14 | Compass capable of rapidly drawing single circle or double circles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201736652U true CN201736652U (en) | 2011-02-09 |
Family
ID=43551936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202648980U Expired - Fee Related CN201736652U (en) | 2010-07-14 | 2010-07-14 | Compass capable of rapidly drawing single circle or double circles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201736652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963180A (en) * | 2012-12-20 | 2013-03-13 | 王华迪 | Compasses capable of drawing concentric circles |
-
2010
- 2010-07-14 CN CN2010202648980U patent/CN201736652U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963180A (en) * | 2012-12-20 | 2013-03-13 | 王华迪 | Compasses capable of drawing concentric circles |
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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: 20110209 Termination date: 20130714 |