CN103317916B - A kind of shifter of compasses - Google Patents
A kind of shifter of compasses Download PDFInfo
- Publication number
- CN103317916B CN103317916B CN201310234924.3A CN201310234924A CN103317916B CN 103317916 B CN103317916 B CN 103317916B CN 201310234924 A CN201310234924 A CN 201310234924A CN 103317916 B CN103317916 B CN 103317916B
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- CN
- China
- Prior art keywords
- slideway
- compasses
- shifter
- chalk
- peep hole
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The invention belongs to teaching aid technical field, particularly relate to a kind of shifter of compasses.The invention discloses a kind of shifter of compasses, it is characterized in that, the shifter of described compasses comprises body, the sidepiece of described body offers the slideway running through body, the top place described body being positioned at slideway offers peep hole, described peep hole communicates with slideway, described body offers the fixing perforation of the chalk corresponding with peep hole, the both sides of described body are provided with the connecting plate paralleled with slideway, and described connecting plate is provided with fixes the rotating nut of boring a hole and communicating with slideway and chalk.The present invention can position required picture diameter of a circle very well, very easily, makes picture fenestra more convenient, and structure is simple, lightly facilitates.
Description
Technical field
The invention belongs to teaching aid technical field, particularly relate to a kind of shifter of compasses.
Background technology
Teacher, when blackboard upper drawing circle, adopts three kinds of compasses at present: a supporting leg of the first compasses is equipped with iron nail and is fixed on blackboard; A supporting leg of the second compasses is equipped with rubber to be fixed on blackboard; A supporting leg of the third compasses is equipped with sucker be fixed on blackboard.Present blackboard is all magnet board, and its feature iron sheet material does, surperficial smoother, and very hard again, and magnetic is more weak.Teacher when blackboard upper drawing circle, has many weak points: the first compasses with above-mentioned compasses, draws bowlder iron nail and is not easy on blackboard fixing, be easy to landing from blackboard, and nail is easy to cause damage to blackboard.It is unstable too that bowlder made by the second compasses, easy landing.The third compasses sucker is difficult to hold blackboard sometimes, and easily from blackboard landing, and sucker is softer, and in the process of drawing, radius of circle has some change, drawn circle not too standard.Therefore, I devises a kind of magnetic compasses, avoids above-mentioned weak point.
Summary of the invention
The object of the invention is to solve above-described technical problem, provide a kind of shifter of compasses, its technical scheme is as follows:
A kind of shifter of compasses, it is characterized in that, the shifter of described compasses comprises body, the sidepiece of described body offers the slideway running through body, the top place described body being positioned at slideway offers peep hole, and described peep hole communicates with slideway, described body offers the fixing perforation of the chalk corresponding with peep hole, the both sides of described body are provided with the connecting plate paralleled with slideway, and described connecting plate is provided with fixes the rotating nut of boring a hole and communicating with slideway and chalk.
The shifter of compasses provided by the invention, when in use, can be arranged with rule in the slideway of body, and whole shifter can be made to slide on the scale.Peep hole is then that the one side with rule with graduation mark communicates, and like this, can be observed the graduation mark on whole rule by peep hole, thus determines required picture radius of a circle size.And chalk can be plugged in the fixing perforation of chalk, thus chalk can be made can be fixed on shifter, along with rule can draw circle.The both sides of described body are provided with the connecting plate paralleled with slideway, and described connecting plate is provided with fixes the rotating nut of boring a hole and communicating with slideway and chalk.Whole shifter can be fixed on the scale by rotating nut, also chalk can be fixed in the fixing perforation of chalk.And the effect of connecting plate is the effectiveness with stiffener, rotating nut can be made to rotate fixing tighter.
The present invention can position required picture diameter of a circle very well, very easily, makes picture fenestra more convenient, and structure is simple, lightly facilitates.
Accompanying drawing explanation
Fig. 1 schematic diagram of the present invention.
Detailed description of the invention
Embodiment is illustrated below in conjunction with Fig. 1:
A kind of shifter of compasses, it is characterized in that, the shifter of described compasses comprises body 1, the sidepiece of described body 1 offers the slideway 2 running through body 1, the top place described body 1 being positioned at slideway 2 offers peep hole 3, described peep hole 3 communicates with slideway 2, described body 1 offers the chalk corresponding with peep hole 3 and fixes perforation 4, the both sides of described body 1 are provided with the connecting plate 5 paralleled with slideway 2, and described connecting plate 5 is provided with the rotating nut 6 fixed perforation 4 with slideway 2 and chalk and communicate.
The shifter of compasses provided by the invention, when in use, can be arranged with rule in the slideway of body, and whole shifter can be made to slide on the scale.Peep hole is then that the one side with rule with graduation mark communicates, and like this, can be observed the graduation mark on whole rule by peep hole, thus determines required picture radius of a circle size.And chalk can be plugged in the fixing perforation of chalk, thus chalk can be made can be fixed on shifter, along with rule can draw circle.The both sides of described body are provided with the connecting plate paralleled with slideway, and described connecting plate is provided with fixes the rotating nut of boring a hole and communicating with slideway and chalk.Whole shifter can be fixed on the scale by rotating nut, also chalk can be fixed in the fixing perforation of chalk.And the effect of connecting plate is the effectiveness with stiffener, rotating nut can be made to rotate fixing tighter.
Claims (1)
1. the shifter of compasses, it is characterized in that, the shifter of described compasses comprises body, the sidepiece of described body offers the slideway running through body, the top place described body being positioned at slideway offers peep hole, described peep hole communicates with slideway, described body offers the fixing perforation of the chalk corresponding with peep hole, the both sides of described body are provided with the connecting plate paralleled with slideway, and described connecting plate is provided with fixes the rotating nut of boring a hole and communicating with slideway and chalk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234924.3A CN103317916B (en) | 2013-06-14 | 2013-06-14 | A kind of shifter of compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234924.3A CN103317916B (en) | 2013-06-14 | 2013-06-14 | A kind of shifter of compasses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103317916A CN103317916A (en) | 2013-09-25 |
| CN103317916B true CN103317916B (en) | 2016-01-27 |
Family
ID=49187092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310234924.3A Expired - Fee Related CN103317916B (en) | 2013-06-14 | 2013-06-14 | A kind of shifter of compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103317916B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2818171Y (en) * | 2005-07-14 | 2006-09-20 | 张淑贤 | Multifunctional magnetic ruling compass |
| DE202007004937U1 (en) * | 2007-04-02 | 2007-07-19 | Knopf, Jürgen | Compass for use at large-area blackboard, has three-armed base supporting magnets, which hold base at blackboard with magnetic force, where one of magnets on surface supports thin layer made of flexible elastic material |
| CN101934668A (en) * | 2009-07-03 | 2011-01-05 | 付莹莹 | Ruler doubled as compasses |
| CN201721207U (en) * | 2010-08-02 | 2011-01-26 | 董庆杰 | Portable compass |
| CN201800391U (en) * | 2010-06-30 | 2011-04-20 | 阿迪力江·衣买尔 | Ruler type compasses |
| CN203449813U (en) * | 2013-06-14 | 2014-02-26 | 雷洪炳 | Mobile device for compasses |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101103946B1 (en) * | 2009-09-24 | 2012-01-12 | 한전케이피에스 주식회사 | Compasses for a Gas Cutter |
-
2013
- 2013-06-14 CN CN201310234924.3A patent/CN103317916B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2818171Y (en) * | 2005-07-14 | 2006-09-20 | 张淑贤 | Multifunctional magnetic ruling compass |
| DE202007004937U1 (en) * | 2007-04-02 | 2007-07-19 | Knopf, Jürgen | Compass for use at large-area blackboard, has three-armed base supporting magnets, which hold base at blackboard with magnetic force, where one of magnets on surface supports thin layer made of flexible elastic material |
| CN101934668A (en) * | 2009-07-03 | 2011-01-05 | 付莹莹 | Ruler doubled as compasses |
| CN201800391U (en) * | 2010-06-30 | 2011-04-20 | 阿迪力江·衣买尔 | Ruler type compasses |
| CN201721207U (en) * | 2010-08-02 | 2011-01-26 | 董庆杰 | Portable compass |
| CN203449813U (en) * | 2013-06-14 | 2014-02-26 | 雷洪炳 | Mobile device for compasses |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103317916A (en) | 2013-09-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20160127 Termination date: 20160614 |
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| CF01 | Termination of patent right due to non-payment of annual fee |