CN203697776U - Ruler capable of drawing circle - Google Patents
Ruler capable of drawing circle Download PDFInfo
- Publication number
- CN203697776U CN203697776U CN201420072394.7U CN201420072394U CN203697776U CN 203697776 U CN203697776 U CN 203697776U CN 201420072394 U CN201420072394 U CN 201420072394U CN 203697776 U CN203697776 U CN 203697776U
- Authority
- CN
- China
- Prior art keywords
- ruler
- manhole
- paper
- piston nail
- nail
- 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
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- Drawing Aids And Blackboards (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
A ruler capable of drawing circle comprises a ruler body. A piston pin is arranged at the front end of the ruler body, and circular through holes are formed in the ruler body corresponding to scales. By pressing the piston pin to be fixed on paper through a hand, and circles can be drawn easily in the hollow circular holes with a pen. According to the ruler, purposes of the ruler and compasses are combined, so that graph drawing not high in accuracy requirement can be met. The ruler has the advantages of being simple to operate and convenient to use.
Description
Technical field
The utility model relates to a kind of ruler, particularly a kind of ruler that can draw circles.
Background technology
The ruler that at present domestic relevant stationery production firm produces, majority tends to two developing direction, and one is single form comparatively, is exactly that type of service is single, is only limited to picture straight line and tolerance.Another kind is cover chi, uses mainly for student.This invention mainly for be the improvement design of Ruler for student use, be mainly the improvement invention of being accustomed to taking according to most of users' behavior act.The ruler using in universities and colleges of most of senior middle school at home, additional function is little conventionally, the function of particularly drawing circular arc.Painter paints in the process of circular arc conventionally, all can utilize compasses to carry out, the circular arc of the different radii that goes to paint.Make user in use, always constantly switching the draw tool of oneself, thereby losing time to reduce learning efficiency.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model has been to provide a kind of ruler that can draw circles, has feature simple to operate, easy to use.
To achieve these goals, the technical solution adopted in the utility model is: a kind of ruler that can draw circles, include ruler body, and it is characterized in that, the front end of ruler body is provided with piston nail, on the corresponding ruler body of graduation mark, is provided with manhole.
The diameter of described manhole is 0.5-2.0mm.Through hole stretches into and wherein carries out draw circles or circular arc line for nib.
Between described piston nail and ruler, be connected by spring.When use, by lower piston nail, ruler one end is fixed on paper downwards, while use, presses piston nail, popped up with spring, depart from and being connected of paper.
The utlity model has following advantage:
The utility model is owing to being provided with at ruler front end for fixing piston nail, by pressing of piston nail fixed to the position of ruler on blank sheet of paper.The other end of ruler can be in random rotation simultaneously in the position of fixing ruler front end, and by manhole corresponding to each scale, circle or the circular arc of the different radii of can painting out easily, have feature simple to operate, time saving and energy saving.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is cutaway view of the present utility model; Wherein Fig. 2 (a) is the piston nail schematic diagram before pressing, and Fig. 2 (b) follows closely the schematic diagram after pressing for piston.
The specific embodiment
Below in conjunction with accompanying drawing, structural principle of the present utility model and operation principle are described in further detail.
Referring to Fig. 1,2, a kind of ruler that can draw circles, includes ruler body, and the front end of ruler body is provided with piston nail 1, on the corresponding ruler body of graduation mark, is provided with manhole 2.
The diameter of described manhole 2 is 0.5-2.0mm.Through hole stretches into and wherein carries out draw circles or circular arc line for nib.
Between described piston nail 1 and ruler, be connected by spring 3.When use, by lower piston nail, ruler one end is fixed on paper downwards, while use, presses piston nail, popped up with spring, depart from and being connected of paper.
Piston nail has played the effect of fixing ruler position, and the while is also to exist as the restriction of ruler moving range.On ruler, also comprise numeral, press piston nail by hand and be fixed on paper, with just can draw easily circle in the manhole 2 of hollow out.The purposes of ruler and compasses is united two into one, can meet the less demanding graphic plotting work of accuracy.There is the features such as simple to operate, easy to use.
Operation principle of the present utility model is:
When use, by pressing of piston nail fixed to the position of ruler on blank sheet of paper, as required nib is stretched in the manhole that corresponding scale is corresponding, can arbitrarily rotate circular arc or the circle of the different radii of painting out.
Claims (3)
1. a ruler that can draw circles, includes ruler body, it is characterized in that, the front end of ruler body is provided with piston nail (1), on the corresponding ruler body of graduation mark, is provided with manhole (2).
2. a kind of ruler that can draw circles according to claim 1, is characterized in that, the diameter of described manhole (2) is 0.5-2.0mm.
3. a kind of ruler that can draw circles according to claim 1, is characterized in that, between described piston nail (1) and ruler, is connected by spring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420072394.7U CN203697776U (en) | 2014-02-20 | 2014-02-20 | Ruler capable of drawing circle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420072394.7U CN203697776U (en) | 2014-02-20 | 2014-02-20 | Ruler capable of drawing circle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203697776U true CN203697776U (en) | 2014-07-09 |
Family
ID=51048266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420072394.7U Expired - Fee Related CN203697776U (en) | 2014-02-20 | 2014-02-20 | Ruler capable of drawing circle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203697776U (en) |
-
2014
- 2014-02-20 CN CN201420072394.7U patent/CN203697776U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20150220 |
|
| EXPY | Termination of patent right or utility model |