CN201989508U - Safe and high-efficiency compasses - Google Patents
Safe and high-efficiency compasses Download PDFInfo
- Publication number
- CN201989508U CN201989508U CN201120028867XU CN201120028867U CN201989508U CN 201989508 U CN201989508 U CN 201989508U CN 201120028867X U CN201120028867X U CN 201120028867XU CN 201120028867 U CN201120028867 U CN 201120028867U CN 201989508 U CN201989508 U CN 201989508U
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- CN
- China
- Prior art keywords
- compasses
- efficiency
- supporting legs
- safe
- movable supporting
- 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
Safe and high-efficiency compasses belong to stationary and mainly solve problems of poor safety and low drawing efficiency of conventional compasses. The safe and high-efficiency compasses comprise a fixed leg with a positioning needle and two movable legs with drawing pens, top ends of the fixed leg and the movable legs are connected through a rotating shaft, and a handle is arranged above the rotating shaft. The safe and high-efficiency compasses are characterized in that the two movable legs and the drawing pens are connected telescopically, the movable legs are distributed on two sides of the fixed leg symmetrically, and elongated straight grooves are arranged on the inner sides of the movable legs symmetrically. The safe and high-efficiency compasses are simple in structure, flexible and convenient to use, capable of improving drawing efficiency greatly, and higher in safety since the problem that users or articles are punctured by an exposed positioning needle of the conventional compasses in storage and carrying is solved.
Description
Technical field
The utility model relates to a kind of stationery, specifically a kind of compasses safely and efficiently.
Background technology
Compasses are to be used for the instrument of picture circle and circular arc in mathematics and drawing, an end that uses compasses in the process of drawing circle, must guarantee to have pin can not move and two foot distance from not changing and an end that has pen being spent around center of circle rotation 360, so can occur the problem of the low and poor stability of efficient when using, the pilot pin of tradition compasses is exposed outside, stabs people or other article when depositing and carrying easily.
The utility model content
The purpose of this utility model is to provide a kind of compasses safely and efficiently, and these compasses have QuickDraw and deposit and carry all very safe functioning.
The technical scheme in the invention for solving the technical problem is: a kind of compasses safely and efficiently, comprise fixed supporting leg that has pilot pin and the movable supporting legs that has drawing pen, fixed supporting leg is connected by rotating shaft on the top with movable supporting legs, the top of rotating shaft is provided with handle, it is characterized in that, described movable supporting legs has two, movable supporting legs is telescopic the connection with the junction of drawing pen, the both sides that are distributed in fixed supporting leg of movable supporting legs symmetry, the straight trough that is provided with strip of the inboard symmetry of movable supporting legs.
The beneficial effects of the utility model are: simple in structure, use flexibly, convenient, and can improve drawing efficiency greatly, the situation that draw point that traditional compasses expose is stabbed people or article can not appear when depositing and carrying yet, and security is higher.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1 rotating shaft, 2 fixed supporting legs, 3 movable supporting legs.
The specific embodiment
As shown in Figure 1.A kind of compasses safely and efficiently, comprise fixed supporting leg 2 that has pilot pin and the movable supporting legs 3 that has drawing pen, fixed supporting leg 2 is connected by rotating shaft 1 on the top with movable supporting legs 3, the top of rotating shaft 1 is provided with handle, described movable supporting legs 3 has two, movable supporting legs 3 is telescopic the connection with the junction of drawing pen, the both sides that are distributed in fixed supporting leg 2 of movable supporting legs 3 symmetries, the straight trough that is provided with strip of the inboard symmetry of movable supporting legs 3.
During use,, two movable supporting legs 3 are opened to identical angle, fixed supporting leg 2 is placed perpendicular to paper, the drawing pen on two movable supporting legs 3 is adjusted to the appropriate length that contact with paper, rotate the half cycle full circle that just can draw if draw a circle; If need the picture concentric circles, two movable supporting legs 3 and the distance of fixed supporting leg 2 are adjusted to required radius respectively, two concentric circles that just can draw rotate a circle; When depositing or carrying, two movable supporting legs 3 are closed up, fixed supporting leg 2 just is absorbed in the space that the straight trough of two movable supporting legs 3 forms, and the pilot pin of having avoided exposing is stabbed people or other article, and is safe and convenient to use.
Claims (1)
1. compasses safely and efficiently, comprise fixed supporting leg that has pilot pin and the movable supporting legs that has drawing pen, fixed supporting leg is connected by rotating shaft on the top with movable supporting legs, the top of rotating shaft is provided with handle, it is characterized in that described movable supporting legs has two, movable supporting legs is telescopic the connection with the junction of drawing pen, the both sides that are distributed in fixed supporting leg of movable supporting legs symmetry, the straight trough that is provided with strip of the inboard symmetry of movable supporting legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120028867XU CN201989508U (en) | 2011-01-28 | 2011-01-28 | Safe and high-efficiency compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120028867XU CN201989508U (en) | 2011-01-28 | 2011-01-28 | Safe and high-efficiency compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201989508U true CN201989508U (en) | 2011-09-28 |
Family
ID=44666007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120028867XU Expired - Fee Related CN201989508U (en) | 2011-01-28 | 2011-01-28 | Safe and high-efficiency compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201989508U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975532A (en) * | 2012-11-26 | 2013-03-20 | 张承运 | Anti-slipping compasses |
-
2011
- 2011-01-28 CN CN201120028867XU patent/CN201989508U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975532A (en) * | 2012-11-26 | 2013-03-20 | 张承运 | Anti-slipping compasses |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20120128 |