CN203920137U - Can draw round ruler - Google Patents
Can draw round ruler Download PDFInfo
- Publication number
- CN203920137U CN203920137U CN201420300637.8U CN201420300637U CN203920137U CN 203920137 U CN203920137 U CN 203920137U CN 201420300637 U CN201420300637 U CN 201420300637U CN 203920137 U CN203920137 U CN 203920137U
- Authority
- CN
- China
- Prior art keywords
- ruler
- draw
- free end
- leading flank
- cylindrical
- 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
Links
Abstract
The utility model relates to a kind of round ruler of drawing, and it is made up of ruler, stiff end, free end, erasing rubber, screw, lead for retractable pencil; Ruler leading flank top is provided with graduation mark, and centre is provided with draw-in groove; Stiff end the top is provided with hole, is provided with skin and wipes in hole; Rear, free end top is cut off one, forms plane, and plane rear is provided with card article, and top leading flank is provided with screw hole, and center, below is provided with lead for retractable pencil hole.The utility model combines ruler, compasses and erasing rubber, makes the circle of picture known diameter convenient.
Description
Technical field
The utility model relates to a kind of ruler, especially a kind ofly draws round ruler.
Background technology
Ruler is straight ruler, is used for measuring length, is widely used in the subjects such as mathematics, measurement, engineering.Ruler also have person be between chi, be a kind of very conventional measuring length instrument, this stationery is very general.Material is variant, has iron, wood, plastic cement etc., has certain degree of hardness, and minimum scale is all generally one millimeter, and scale unit is often centimetre.Some ruler leaves special shape in centre, as letter or circular hole, facilitates user to draw.
The ruler that different occasions are used is different with standard to its requirement; if requiring numerical value talks about more accurately; so just need higher technology; and must make by production of machinery; except require numerical value accurately; second emphasis is exactly to have carved the quality of numerical value; generally all can after numerical value, can iron again last layer diaphragm at quarter; it is exactly thirdly the selection of material; at present be divided into plastic cement, metal, wooden ruler; plastic cement ruler is mainly that general student uses stationery class, and more uses are industrial for metal ruler, and wooden ruler is mainly used in teaching.Generally drawing circle is all first to measure with ruler, then draws circle with a compass, and has drawn wrong and has wiped and repaint with erasing rubber, and ruler, compasses, erasing rubber disperse to use cumbersome like this.
Utility model content
In order to overcome the deficiency of above-mentioned existing product, the purpose of this utility model is to provide a kind of round ruler of drawing, it is made up of ruler, stiff end and free end, stiff end top is provided with erasing rubber, draw bowlder and be fixed on the center of circle, free end is provided with screw and lead for retractable pencil, can on ruler, move, and draws the circle of different radii on paper.
In order to realize the technical scheme that the purpose of this utility model adopts be: a kind ofly draw round ruler, it is characterized in that: it is made up of ruler, stiff end, free end, erasing rubber, screw, lead for retractable pencil; Described ruler is rectangle, and leading flank top is provided with graduation mark, and centre is provided with strip draw-in groove; In the middle of described stiff end, be cylindrical, below is conical, and top is round table-like, and the top is cylindrical, and in cylindrical, is provided with square opening, is provided with square erasing rubber in square opening; Described free end top be cylindrical, and cylindrical rear is cut off one, forms plane, and plane rear is provided with square card article, and free end top leading flank is provided with screw hole, and below is taper shape, and center is provided with lead for retractable pencil hole.
The beneficial effects of the utility model are: ruler, compasses and erasing rubber are combined, make the circle of picture known diameter convenient.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Fig. 1 is the utility model structure chart
Fig. 2 is the utility model cutaway view
Fig. 3 is the utility model top view
Fig. 4 is the utility model free end left view cutaway view
1-ruler, 2-stiff end, 3-free end, 4-erasing rubber, 5-screw, 6-lead for retractable pencil in figure.
Detailed description of the invention
In the first embodiment shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind ofly draw round ruler, it is characterized in that: it is made up of ruler, stiff end, free end, erasing rubber, screw, lead for retractable pencil; Described ruler is rectangle, and leading flank top is provided with graduation mark, and centre is provided with strip draw-in groove; In the middle of described stiff end, be cylindrical, below is conical, and top is round table-like, and the top is cylindrical, and in cylindrical, is provided with square opening, is provided with square erasing rubber in square opening; Described free end top be cylindrical, and cylindrical rear is cut off one, forms plane, and plane rear is provided with square card article, and free end top leading flank is provided with screw hole, and below is taper shape, and center is provided with lead for retractable pencil hole.
In the second embodiment shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, minimum scale above described ruler is accurate to one millimeter, left end is fixed on stiff end rear, and zero graduation aligns with the stiff end rightmost side, draw-in groove front side width in the middle of leading flank is less than rear side, conveniently blocks free end rear card article, is used for measuring length, regulate the position of free end on ruler, conveniently draw the circle of different radii; Described stiff end the top cylindrical part, as handle, conveniently holds ruler and draws circle, and below conical portion is inserted in paper at picture bowlder, as the center of circle, is convenient to free end rotation; Described free end is stuck in by the card article at rear in the draw-in groove of ruler leading flank, can in draw-in groove, move left and right, change radius of a circle, draw the circle of different radii, card article front side width is less than rear side, free end top screwed hole diameter and ruler draw-in groove front side width are equal, are convenient to screw secure free end, and free end is used for fixing lead for retractable pencil; Described erasing rubber is contained in the square opening of stiff end the top circular portion, is used for revising mistake; Described screw screws in the screw hole of free end leading flank, and rear end is stuck in ruler draw-in groove front side, is used for fixing free end, prevents from drawing bowlder, and free end moves; Described lead for retractable pencil is inserted in the centre bore of free end below conical portion, is used for picture circle.
While using the utility model, first in free end, install lead for retractable pencil, and loosening screw, then according to drawn radius of a circle, move left and right free end, make free end center aim at the target scale on ruler, then tighten screw, fix free end, finally hold stiff end the top, stiff end below conical portion is inserted in paper, and rotary ruler combination just can draw target circle on paper.
Claims (6)
1. can draw a round ruler, it is characterized in that: it is made up of ruler, stiff end, free end, erasing rubber, screw, lead for retractable pencil; Described ruler is rectangle, and leading flank top is provided with graduation mark, and centre is provided with strip draw-in groove; In the middle of described stiff end, be cylindrical, below is conical, and top is round table-like, and the top is cylindrical, and in cylindrical, is provided with square opening, is provided with square erasing rubber in square opening; Described free end top be cylindrical, and cylindrical rear is cut off one, forms plane, and plane rear is provided with square card article, and free end top leading flank is provided with screw hole, and below is taper shape, and center is provided with lead for retractable pencil hole.
2. according to claim 1ly draw round ruler, it is characterized in that: the minimum scale above described ruler is accurate to one millimeter, left end is fixed on stiff end rear, and zero graduation aligns with the stiff end rightmost side, and the draw-in groove front side width in the middle of leading flank is less than rear side.
3. according to claim 1ly draw round ruler, it is characterized in that: described free end is stuck in the draw-in groove of ruler leading flank by the card article at rear.
4. according to claim 1ly draw round ruler, it is characterized in that: described erasing rubber is contained in the square opening of stiff end the top circular portion.
5. according to claim 1ly draw round ruler, it is characterized in that: described screw screws in the screw hole of free end leading flank, and rear end is stuck in ruler draw-in groove front side.
6. according to claim 1ly draw round ruler, it is characterized in that: described lead for retractable pencil is inserted in the centre bore of free end below conical portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420300637.8U CN203920137U (en) | 2014-06-08 | 2014-06-08 | Can draw round ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420300637.8U CN203920137U (en) | 2014-06-08 | 2014-06-08 | Can draw round ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203920137U true CN203920137U (en) | 2014-11-05 |
Family
ID=51816005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420300637.8U Expired - Fee Related CN203920137U (en) | 2014-06-08 | 2014-06-08 | Can draw round ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203920137U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875529A (en) * | 2015-06-23 | 2015-09-02 | 樊一鸣 | Circle drawing tool |
| CN106427317A (en) * | 2016-11-10 | 2017-02-22 | 黄文意 | Multipurpose ruler |
-
2014
- 2014-06-08 CN CN201420300637.8U patent/CN203920137U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875529A (en) * | 2015-06-23 | 2015-09-02 | 樊一鸣 | Circle drawing tool |
| CN106427317A (en) * | 2016-11-10 | 2017-02-22 | 黄文意 | Multipurpose ruler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150608 |
|
| EXPY | Termination of patent right or utility model |