CN102729701A - Circle-drawing assembly matched to metal ruler - Google Patents
Circle-drawing assembly matched to metal ruler Download PDFInfo
- Publication number
- CN102729701A CN102729701A CN2011100859115A CN201110085911A CN102729701A CN 102729701 A CN102729701 A CN 102729701A CN 2011100859115 A CN2011100859115 A CN 2011100859115A CN 201110085911 A CN201110085911 A CN 201110085911A CN 102729701 A CN102729701 A CN 102729701A
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- CN
- China
- Prior art keywords
- circle
- ruler
- irony
- movable sheets
- metal
- 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.)
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Abstract
The invention provides a circle-drawing assembly matched to a metal ruler. The circle-drawing assembly is characterized by comprising two movable sheets, wherein circle-drawing holes are provided on the sides of each movable sheet and magnets are fixedly embedded into the movable sheets. With the adoption of the above structure, the two movable sheets are magnetically absorbed on an irony ruler; the circle-drawing holes are disposed on a scale mark of the ruler, and the distance between the two circle-drawing holes is adjusted to be the radius of the circle to be drawn; and a needle-shaped object stretches into one circle-drawing hole as the center of the circle and a pencil point stretches into the other circle-drawing hole to drive the ruler to draw the circle rotationally in a piece of paper. The circle-drawing assembly matched to the metal ruler has the beneficial effect that two magnetic movable sheets with the circle-drawing holes are added to the initial irony ruler to realize an accurate circle-drawing function of the ruler, one object with dual-function is used and efficiency is increased. The small movable sheets may be magnetically absorbed at any position of the irony ruler without affecting a measuring function of the irony ruler and also inside an irony box with difficulty to lose and convenience to take. The circle-drawing assembly matched to the metal ruler can be sold independently or with the irony ruler, and is low in cost, good in effects and popularized easily.
Description
Technical field
the present invention relates to a kind of survey tool, especially relate to a kind of picture circle external member that is matched in the metal ruler.
Background technology
existing iron ruler has carried out surface treatment usually, and fineness is better, is called straight steel ruler again, all can with magnet generation magnetic interaction.Attractive in appearance and wearability is strong because of it, with respect to plastic flat ruler, welcome by the student, but the same with all rulers, have only measurement function; Student's study needs the picture circle often, just must be with compasses in addition, uses just very time-consuming, effort, also inaccurate like this.
Summary of the invention
the objective of the invention is: to above-mentioned problem, a kind of picture circle external member that is matched in the metal ruler is provided, so that make original metal ruler (like the iron ruler of common use etc.) can draw circle easily and accurately.
technical scheme that the present invention adopted is: a kind of picture circle external member that is matched in the metal ruler, it is characterized in that: it is made up of two moving sheets, and the side of said each moving sheet has the picture circular hole, and build-in has magnet on the said moving sheet.
said moving sheet is that transparent material is made.
are adsorbed on two moving sheets on the iron ruler through magnetic force after adopting said structure; Picture circular hole on two moving sheets is positioned on the graduated sideline of ruler mark, and the distance of regulating between two picture circular holes is drawn radius of a circle; Spicule (like nib) is stretched into one draw in the circular hole and do the center of circle, will draw circle pen (tip of a pencil, a ball-point pen tip etc.) and stretch into another and draw in circular hole, and drive ruler and in paper, rotate, can picture round.
the invention has the beneficial effects as follows: on the basis that does not change original iron ruler, only need newly-increased two magnetic moving sheets that have the picture circular hole, just the function of ruler is expanded to and can accurately draw circle, and a thing dual-purpose, efficient heightens.The moving sheet profile is little, but magnetic can not have influence on the normal measurement function of iron ruler in the optional position of iron ruler, but also magnetic is difficult for losing in the stylus box, and is easy to carry.Can be separately or with the systems selling of iron ruler, cost is low, effective, be easy to promote.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the embodiment of the invention 2;
Among
figure: 1 draws circular hole, 2 magnets, 3 moving sheets, 4 rulers.
The specific embodiment
Like Fig. 1, shown in Figure 2, the present invention is made up of two moving sheets 3 that separate with the iron ruler
, and the side of moving sheet 3 has the picture circular hole 1 that supplies nib or needle point to stretch into, and also is embedded with magnet on the moving sheet 3.
The shape of
moving sheet 3 can be different, can be bar shaped as shown in Figure 1, also can be triangle as shown in Figure 2, more can be the shape of geometric figure or cartoon pattern.According to the concrete shape of moving sheet 3, and the magnetic intensity of magnet 2, a magnet (as shown in Figure 2) or two magnets (as shown in Figure 1) can be set on moving sheet 3.
Can be provided with one on the moving sheet 3 and draw circular hole 1, also two or more can be set:, can respectively establish one at the two ends of bar shaped moving sheet and draw circular hole if moving sheet is bar shaped shown in Figure 1; If moving sheet is a fillet triangle shown in Figure 2, can on three angles, respectively establishes one and draw circular hole.
Claims (4)
1. a picture that is matched in the metal ruler is justified external member, and it is characterized in that: it is made up of two moving sheets, and the side of said each moving sheet has the picture circular hole, and build-in has magnet on the said moving sheet.
2. be matched in the picture circle external member of metal ruler according to claim 1, it is characterized in that: said moving sheet is that transparent material is made.
3. like the said picture circle external member that is matched in the metal ruler of claim 2, it is characterized in that: said moving sheet can be the shape of bar shaped, triangle, geometric figure or cartoon pattern.
4. like the said picture circle external member that is matched in the metal ruler of claim 3, it is characterized in that: said each moving sheet is provided with one or more picture circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100859115A CN102729701A (en) | 2011-04-07 | 2011-04-07 | Circle-drawing assembly matched to metal ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100859115A CN102729701A (en) | 2011-04-07 | 2011-04-07 | Circle-drawing assembly matched to metal ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102729701A true CN102729701A (en) | 2012-10-17 |
Family
ID=46986284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100859115A Pending CN102729701A (en) | 2011-04-07 | 2011-04-07 | Circle-drawing assembly matched to metal ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102729701A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015193639A1 (en) * | 2014-06-19 | 2015-12-23 | Redtech Limited | A device, peg, system and tape measure |
-
2011
- 2011-04-07 CN CN2011100859115A patent/CN102729701A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015193639A1 (en) * | 2014-06-19 | 2015-12-23 | Redtech Limited | A device, peg, system and tape measure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121017 |