CN2194821Y - Multifunctional drawing instrument - Google Patents
Multifunctional drawing instrument Download PDFInfo
- Publication number
- CN2194821Y CN2194821Y CN 94213680 CN94213680U CN2194821Y CN 2194821 Y CN2194821 Y CN 2194821Y CN 94213680 CN94213680 CN 94213680 CN 94213680 U CN94213680 U CN 94213680U CN 2194821 Y CN2194821 Y CN 2194821Y
- Authority
- CN
- China
- Prior art keywords
- square plate
- circular slab
- chi
- circle
- plate
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a plane type multifunctional drawing instrument which can draw a circle, a circular arc, an angle, a parallel line and a vertical line. The utility model is composed of a square plate, a circular plate and a vertical angle L ruler, wherein, a big round hole is arranged on the square plate, and the circular plate can be matched and embedded in the big round hole. The graduation of a protractor is respectively arranged on the circumferences of the square plate and the circular plate. A strip-shaped hole is arranged on one diameter line of the circular plate, and a plurality of pen point inserting holes are respectively arranged on a plurality of radius lines of the circular plate. Graduation of a straight ruler is respectively arranged on the periphery of the square plate and the L ruler. The square plate is a positioning plate, the L ruler and the circular plate are movable plates, and the drawing function can be completed when the square plate, the circular plate and the L ruler are matched with each other.
Description
The utility model relates to a kind of multi-functional drawing equipment that can draw circle, circular arc, angle, parallel lines, vertical line.
In prior art, the drawing equipment of drawing circle with the plane formula structure generally is to adopt the circular hole that setting is differed in size on draughting board to finish picture circle function.This structure only is suitable for the picture roundlet, can not draw the bigger circle of diameter, again because the circular hole quantity that is provided with on the draughting board is subjected to the restriction of space of a whole page size, and a lot of circles so it can not draw.In addition, the operate miss along circular hole inner edge picture circle is bigger.Therefore, said structure is not comparatively ideal picture circle structure.Moreover, can have the multi-functional drawing equipment that is equipped with picture circle, circular arc, angle simultaneously and generally all be unable to do without compasses formula structure, therefore, its is difficult to, and combination again draws parallel lines and the function of vertical line.At present, yet there are no the multi-functional drawing equipment that to realize picture circle, circular arc, angle and parallel lines, vertical line with the plane formula structure.
The purpose of this utility model provides a kind of multi-functional drawing equipment of plane formula of can easily and fast, accurately draw circle, circular arc, angle, parallel lines and vertical line.
Solution of the present utility model is as follows: it is made up of a square plate, circular slab and L chi.Described square plate is provided with a big hole that matches with circular slab, and described circular slab cooperates in this big hole of embedding; Described L chi is a right angle L chi.On square plate surrounding and L chi, be respectively equipped with the ruler scale.On the circumferential edge of the big hole of square plate and circular slab, be respectively equipped with 360 ° of protractor scales.Having a bar hole on diameter line of circular slab, is that initial point is respectively equipped with the ruler scale on the radius of both sides with the circular slab center of circle on this bar hole limit.In addition be respectively equipped with the nib jack that a plurality of intervals equate on many radius at circular slab, and on each bar radius apart from the circular slab center of circle nearest nib jack arrange according to arithmetic progression respectively.
When this drawing equipment is drawn the circle operation, nib is inserted some nib jacks, nib promotes circular slab and circles in square big hole, and circle can draw.Draw circle in this way, operate miss is very little.The arranging of nib jack on the above-mentioned circular slab, the corresponding circle that draws on can be in the plectane radius corresponding per half millimeter scale can reach the precision that compasses are drawn circle basically.The bar hole of offering on the above-mentioned circular slab can be made the center of circle easily, and according to the protractor scale that is provided with on the circumferential edge, various angles and radian can draw.This drawing equipment is with the cooperation of L chi and square plate can draw apace parallel lines and vertical line.
By above-mentioned solution as can be seen, this drawing equipment can make things convenient for and draw exactly circle, angle, circular arc, parallel lines etc., has advantage simple in structure, that be easy to make simultaneously.
Describe its structure and use in detail according to embodiment below.
Accompanying drawing, overall structure schematic diagram of the present utility model.
Referring to accompanying drawing, square plate 1 is as location-plate, and circular slab 2 usefulness diameter lines ten are halved, and wherein offer described bar hole 3 on 0～180 ° of diameter line, and other five diameter lines are that unit is provided with the nib jack 4 that equates at interval with the radius, and its interval length is five millimeters.On each bar radius apart from the circular slab center of circle nearest nib jack respectively according to arithmetic progression: a, a+d, a+2d ... a+nd arranges, constant a=5 millimeter, tolerance value d=0.5 millimeter, the nib jack of arranging by this ordered series of numbers, the minimum diameter of a circle that draws is ten millimeters, with this circle is basic circle, and one millimeter circle that can draw of the every increase of diameter is till the greatest circle of signing in circular slab always and being limited.When drawing radian, nib is inserted in the corresponding nib jack, according to the corresponding circular arc that draws of protractor scale correspondence on circular slab and the square plate.When drawing angle, earlier from the bar hole center origin along a draw limit of angle, bar hole limit, by the scale of angulation, bar hole is rotated the angle groove place that will draw then, the draw other limit of angle of the same again operation.Draw parallel lines and during vertical line, need with square plate and L chi compounding practice, for example: when drawing parallel lines, the perpendicular chi of L chi press the ruler scale to distance of lower slider along square plate left side chi, can be along L chi crossfoot and the following chi of square plate two parallel lines that draw; When drawing vertical line, square plate left side chi is left perpendicular chi one segment distance of L chi, earlier along the draw vertical line of vertical line of square plate left side chi, the square plate of moving away then is again along the draw horizontal line of vertical line of L chi crossfoot.
In order to expand the function of picture great circle, can on the square plate on the circular slab diameter extended line, the nib jack be set also, when drawing great circle, make location-plate with circular slab, nib promotes square plate and rotates a week, the great circle of can drawing.Simultaneously, in order to remedy the function that can not draw roundlet, also can be on square plate vacant place the small sircle hole of some different-diameters is set.
Claims (3)
1, multi-functional drawing equipment is characterized in that:
A, form by a square plate (1), circular slab (2) and L chi (5);
B, described square plate are provided with a big hole that matches with circular slab, and described circular slab cooperates in this big hole of embedding, and described L chi is a right angle L chi;
C, on square plate surrounding and L chi, be respectively equipped with the ruler scale;
D, on the circumferential edge of the big hole of square plate and circular slab, be respectively equipped with 360 ° of protractor scales;
F, on diameter line of circular slab, have a bar hole (3), on this bar hole limit, be that initial point is respectively equipped with the ruler scale on the radius of both sides with the circular slab center of circle, in addition be respectively equipped with the nib jack (4) that a plurality of intervals equate on many radius at circular slab, and on each bar radius apart from the circular slab center of circle nearest nib jack arrange according to arithmetic progression respectively.
2, multi-functional drawing equipment as claimed in claim 1 is characterized in that: also be provided with the nib jack on the square plate on the circular slab diameter extended line.
3, as claim 1,2 described multi-functional drawing equipments, it is characterized in that: the small sircle hole that on square plate, also is provided with some different-diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94213680 CN2194821Y (en) | 1994-05-25 | 1994-05-25 | Multifunctional drawing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94213680 CN2194821Y (en) | 1994-05-25 | 1994-05-25 | Multifunctional drawing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2194821Y true CN2194821Y (en) | 1995-04-19 |
Family
ID=33830167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94213680 Expired - Fee Related CN2194821Y (en) | 1994-05-25 | 1994-05-25 | Multifunctional drawing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2194821Y (en) |
-
1994
- 1994-05-25 CN CN 94213680 patent/CN2194821Y/en not_active Expired - Fee Related
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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 |