CN2326452Y - Multifunctic compasses - Google Patents
Multifunctic compasses Download PDFInfo
- Publication number
- CN2326452Y CN2326452Y CN 98225892 CN98225892U CN2326452Y CN 2326452 Y CN2326452 Y CN 2326452Y CN 98225892 CN98225892 CN 98225892 CN 98225892 U CN98225892 U CN 98225892U CN 2326452 Y CN2326452 Y CN 2326452Y
- Authority
- CN
- China
- Prior art keywords
- track
- scale
- pilot pin
- annulus
- support
- 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
The utility model relates to compasses which can draw ellipses. The utility model is mainly composed of a locator pin, a support bracket, a trace circular ring, a scale, a support, a slide member, a trace rod and a pen bracket. The compasses have the advantages of reasonable structure and simple processing technology. The utility model can rapidly and simply draw ellipses and circles, and can also measure angles.
Description
The utility model relates to a kind of stationery, particularly can draw oval compasses.
Usually people are easy to utilize general compasses to draw out various circles, when people drawing when oval, often adopt four kinds of approximate techniques of painting, i.e. focal method, method of altering course with a concentric circle, parallelogram method, four heart sub-elliptical methods, yet no matter adopt which kind of method, all time-consuming drawing quality that influences again.
The purpose of this utility model is to provide a kind of can draw oval multifunctional compass fast.
For achieving the above object, the utility model is mainly by pilot pin, support, the track annulus, scale, support member, sliding part, Track Point, penholder is formed, the pilot pin upper end is fixed on the top of support, the two ends of support are coated at a diameter direction of track annulus by cylinder axis, scale is the circular arc of the big and track annulus external diameter of an internal diameter, one end of scale is connected the pilot pin upper end, the other end of scale be connected with the perpendicular track annulus of cylinder axis place diameter on, scale is marked with the graduation mark of the difference of oval length semiaxis, support member is nested with outside pilot pin, sliding part is arranged on the interior gathering sill of support member, resigning hole is set on the sliding part, Track Point be arranged in parallel near the interior circle of track annulus and with pilot pin, Track Point is fixed in sliding part, the Track Point lower end connects penholder, and spring steel plate one end is fixed on the support member, and the other end withstands on the Track Point.
Be marked with angle line at above-mentioned track annulus.
Track annulus of the present utility model is in and the perpendicular position of pilot pin, regulate the nib of penholder and the distance between the backstay, make it to be oval major semiaxis numerical value,, make the locus circle loop mapping on the graduation mark of the difference of the length semiaxis of scale then around support lower end axial wobble track annulus.After finding the center on the drawing, pin the pilot pin upper end, in one week of rotatable support, can draw out required ellipse.
Track annulus of the present utility model is placed and the perpendicular position of pilot pin, regulate the nib of penholder and the distance between the pilot pin, make it to be radius of a circle, then after finding the center of circle on the drawing, pin the pilot pin upper end, in one week of rotatable support, can draw out required circle.
Utilize the utility model also can take measurement of an angle.Adjust penholder, make penholder and Track Point be in same axis,, catch the pilot pin upper end the drift angle of pilot pin due to required measurement, the rotary motion trace bar, on the track annulus to zero after, the rotary motion trace bar arrives desired location again, can take measurement of an angle.
The utility model is according to the formation principle of ellipse: the circle that with the main shaft is diameter is round the required angle of this main shaft rotation, and can determine the ellipse that produces on the perspective plane thus.The utility model is novel, and is rational in infrastructure, and processing technology is simple, easy to use, can draw out the ellipse of lines slyness apace.
Now in conjunction with the accompanying drawings, embodiment is described.
Fig. 1 is the utility model master TV structure schematic diagram;
Fig. 2 is the B-B cut-away view;
Fig. 3 is the C-C cut-away view;
Fig. 4 is the A-A cut-away view.
Among the figure, 1 support, 2 track annulus, 3 sliding parts, 4 support members, 5 pilot pins, 6 penholders, 7 Track Points, 8 spring steel plates, 9 scales, 10 locus circle loop mapping nuts, 11 cylinder axis, 12 nuts, 13 penholder hold-down nuts, 14 screw rods, 15 gathering sills, 16 resigning holes.
Claims (2)
1, a kind of multifunctional compass, comprise pilot pin, it is characterized in that compasses also comprise support, the track annulus, scale, support member, sliding part, Track Point, penholder, the pilot pin upper end is fixed on the top of support, the two ends of support are coated at a diameter direction of track annulus by cylinder axis, scale is the circular arc of the big and track annulus external diameter of an internal diameter, one end of scale is connected the pilot pin upper end, the other end of scale be connected with the perpendicular track annulus of cylinder axis place diameter on, scale is marked with the graduation mark of the difference of oval length semiaxis, support member is nested with outside pilot pin, sliding part is arranged on the interior gathering sill of support member, resigning hole is set on the sliding part, Track Point be arranged in parallel near the interior circle of track annulus and with pilot pin, and Track Point is fixed in sliding part, and the Track Point lower end connects penholder, spring steel plate one end is fixed on the support member, and the other end withstands on the Track Point.
2,, it is characterized in that the track annulus is marked with angle line according to the described compasses of claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 98225892 CN2326452Y (en) | 1998-01-21 | 1998-01-21 | Multifunctic compasses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 98225892 CN2326452Y (en) | 1998-01-21 | 1998-01-21 | Multifunctic compasses |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2326452Y true CN2326452Y (en) | 1999-06-30 |
Family
ID=33976496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 98225892 Expired - Fee Related CN2326452Y (en) | 1998-01-21 | 1998-01-21 | Multifunctic compasses |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2326452Y (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102514423A (en) * | 2012-01-04 | 2012-06-27 | 贵州开磷(集团)有限责任公司 | Three-centered arch painting device |
CN103754028A (en) * | 2014-01-17 | 2014-04-30 | 电子科技大学 | Elliptic trammels |
-
1998
- 1998-01-21 CN CN 98225892 patent/CN2326452Y/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102514423A (en) * | 2012-01-04 | 2012-06-27 | 贵州开磷(集团)有限责任公司 | Three-centered arch painting device |
CN102514423B (en) * | 2012-01-04 | 2014-07-09 | 贵州开磷(集团)有限责任公司 | Three-centered arch painting device |
CN103754028A (en) * | 2014-01-17 | 2014-04-30 | 电子科技大学 | Elliptic trammels |
CN103754028B (en) * | 2014-01-17 | 2015-10-28 | 电子科技大学 | Ellipsograph |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |