CN102233773A - Compasses with magnetic block - Google Patents
Compasses with magnetic block Download PDFInfo
- Publication number
- CN102233773A CN102233773A CN2010101588633A CN201010158863A CN102233773A CN 102233773 A CN102233773 A CN 102233773A CN 2010101588633 A CN2010101588633 A CN 2010101588633A CN 201010158863 A CN201010158863 A CN 201010158863A CN 102233773 A CN102233773 A CN 102233773A
- Authority
- CN
- China
- Prior art keywords
- compasses
- magnetic block
- supporting leg
- adjusting
- magnetic patch
- 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.)
- Pending
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- Drawing Aids And Blackboards (AREA)
Abstract
The invention provides compasses with a magnetic block. The magnetic block is arranged at the lower end of one leg of the compasses for teaching by a universal ball, and replaceable chalk is arranged at the lower end of the other leg of the compasses; and an adjusting ruler for adjusting the radius of the compasses is arranged at a middle place between the two legs. By using the compasses provided by the invention, a required circle can be drawn by fixing one leg of the compasses on a corresponding blackboard steadily by the magnetic block and adjusting the radius of the bottom end of the compasses by the adjusting ruler; and the compasses are simple in structure and convenient to use.
Description
Technical field
The present invention relates to kind of compasses, a kind of specifically compasses with magnetic patch.
Background technology
The compasses that school instruction uses all are on a supporting leg contact pin to be set, and fix on the blackboard upper drawing circle by contact pin, both have been inconvenient to use, also the plate face of fragile blackboard.
Summary of the invention
The object of the present invention is to provide a kind of compasses, can be stabilized in the blackboard upper drawing circle very easily, be particularly suitable for teaching and use with magnetic patch.
The present invention includes compasses for teaching and supporting leg thereof and chalk, the technical scheme that is adopted is: a magnetic patch is equipped with by multi-directional ball in a supporting leg lower end of described compasses for teaching, and another supporting leg lower end is the chalk that can change.
An adjusting chi that is used to regulate the compasses radius is equipped with at the place in the middle of between two supporting legs.
Beneficial effect of the present invention is: can be stabilized on the corresponding blackboard by the supporting leg of magnetic patch with compasses, regulate the radius of bottom by regulating chi, the required circumference that can draw has characteristics simple in structure, easy to use.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing is a structural representation of the present invention.
The specific embodiment
Shown in the accompanying drawing embodiment: a magnetic patch 3 is equipped with by multi-directional ball 4 in supporting leg 2 lower ends of compasses for teaching 1, and another supporting leg 2 lower ends are the chalks 5 that can change.An adjusting chi 6 that is used to regulate the compasses radius is equipped with at the place in the middle of between two supporting legs 2.
Claims (2)
1. compasses with magnetic patch, comprise compasses for teaching (1) and supporting leg (2) thereof and chalk (5), it is characterized in that: a magnetic patch (3) is equipped with by multi-directional ball (4) in a supporting leg (2) lower end of described compasses for teaching (1), and another supporting leg (2) lower end is the chalk (5) that can change.
2. the compasses of band magnetic patch according to claim 1 is characterized in that: an adjusting chi (6) that is used to regulate the compasses radius is equipped with at the place in the middle of between two supporting legs (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101588633A CN102233773A (en) | 2010-04-22 | 2010-04-22 | Compasses with magnetic block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101588633A CN102233773A (en) | 2010-04-22 | 2010-04-22 | Compasses with magnetic block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102233773A true CN102233773A (en) | 2011-11-09 |
Family
ID=44885064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101588633A Pending CN102233773A (en) | 2010-04-22 | 2010-04-22 | Compasses with magnetic block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102233773A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529526A (en) * | 2012-03-17 | 2012-07-04 | 孙友方 | Anti-slip and energy-saving teaching compass |
| CN104626827A (en) * | 2015-02-06 | 2015-05-20 | 黄利辉 | Magnetic multifunctional geometry teaching aid |
-
2010
- 2010-04-22 CN CN2010101588633A patent/CN102233773A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529526A (en) * | 2012-03-17 | 2012-07-04 | 孙友方 | Anti-slip and energy-saving teaching compass |
| CN102529526B (en) * | 2012-03-17 | 2014-11-12 | 孙友方 | Anti-slip and energy-saving teaching compass |
| CN104626827A (en) * | 2015-02-06 | 2015-05-20 | 黄利辉 | Magnetic multifunctional geometry teaching aid |
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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: 20111109 |