CN103317916A - Mover of compasses - Google Patents
Mover of compasses Download PDFInfo
- Publication number
- CN103317916A CN103317916A CN2013102349243A CN201310234924A CN103317916A CN 103317916 A CN103317916 A CN 103317916A CN 2013102349243 A CN2013102349243 A CN 2013102349243A CN 201310234924 A CN201310234924 A CN 201310234924A CN 103317916 A CN103317916 A CN 103317916A
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- China
- Prior art keywords
- compasses
- slideway
- chalk
- shifter
- mover
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- 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 belongs to the technical field of teaching aids, and particularly relates to a mover of compasses. The mover of the compasses is characterized by comprising a body, wherein the side part of the body is provided with a slide way which penetrates the body; an observation hole is formed in the body above the slide way and is communicated with the slide way; a chalk fixing through hole corresponding to the observation hole is formed in the body; connecting plates which are parallel to the slide way are arranged on the two sides of the body and are provided with swivel nuts communicated with the slide way and the chalk fixing through hole. The mover of the compasses can be used for excellently and very conveniently positioning the diameter of a circle to be drawn, so that the circle can be drawn more conveniently; the mover of the compasses has a simple structure and is handy and convenient.
Description
Technical field
The invention belongs to the teaching aid technical field, relate in particular to a kind of shifter of compasses.
Background technology
The teacher adopts three kinds of compasses at present when the blackboard upper drawing circle: on the supporting leg of the first compasses iron nail is housed and is fixed on the blackboard; On the supporting leg of the second compasses rubber being housed is fixed on the blackboard; On the supporting leg of the third compasses sucker being housed is fixed on the blackboard.Present blackboard all is magnet board, and its feature is made of the iron sheet material, surperficial smoother, and very hard again, magnetic a little less than.Teacher when the blackboard upper drawing circle, has many weak points with above-mentioned compasses: the first compasses, and draw the bowlder iron nail and be not easy at blackboard fixingly, be easy to landing from the blackboard, and nail is easy to blackboard is caused damage.It is unstable too that the second compasses are made bowlder, easily landing.The third compasses sucker is difficult to hold blackboard sometimes, and easily from the blackboard landing, and sucker is softer, and radius of circle has some variation in the process of drawing, and drawn circle is standard not too.Therefore, I have designed a kind of magnetic compasses, have avoided above-mentioned weak point.
Summary of the invention
The object of the invention is to solve above-described technical problem, a kind of shifter of compasses is provided, 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 that runs through body, the place, top that is positioned at slideway on the described body offers peep hole, and described peep hole communicates with slideway, offers the fixing perforation of the chalk corresponding with peep hole on the described body, the both sides of described body are provided with the connecting plate that parallels with slideway, and described connecting plate is provided with the rotating nut that communicates with slideway and the fixing perforation of chalk.
The shifter of compasses provided by the invention when in use, can be arranged with rule in the slideway of body, can be so that whole shifter can slide at rule.The one side that peep hole then is with rule has a graduation mark communicates, and like this, can observe graduation mark on the whole rule by peep hole, thereby determine required picture radius of a circle size.And in the fixing perforation of chalk, can plug chalk, thereby can be so that chalk can be fixed on the shifter, along with rule can draw circle.The both sides of described body are provided with the connecting plate that parallels with slideway, and described connecting plate is provided with the rotating nut that communicates with slideway and the fixing perforation of chalk.Can be fixed on whole shifter on the rule by rotating nut, also can be fixed on chalk in the fixing perforation of chalk.And the effect of connecting plate is the effectiveness with stiffener, can be so that the rotating nut rotation is fixing tighter.
The present invention can be fine, very easily required picture diameter of a circle is positioned, so that it is more convenient to draw fenestra, and also simple in structure, light and handy convenient.
Description of drawings
Fig. 1 schematic diagram of the present invention.
The specific embodiment
Specify embodiment 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 that runs through body 1, the place, top that is positioned at slideway 2 on the described body 1 offers peep hole 3, described peep hole 3 communicates with slideway 2, offer the fixing perforation 4 of the chalk corresponding with peep hole 3 on the described body 1, the both sides of described body 1 are provided with the connecting plate 5 that parallels with slideway 2, and described connecting plate 5 is provided with and slideway 2 and the fixing perforation of chalk 4 rotating nuts that communicate 6.
The shifter of compasses provided by the invention when in use, can be arranged with rule in the slideway of body, can be so that whole shifter can slide at rule.The one side that peep hole then is with rule has a graduation mark communicates, and like this, can observe graduation mark on the whole rule by peep hole, thereby determine required picture radius of a circle size.And in the fixing perforation of chalk, can plug chalk, thereby can be so that chalk can be fixed on the shifter, along with rule can draw circle.The both sides of described body are provided with the connecting plate that parallels with slideway, and described connecting plate is provided with the rotating nut that communicates with slideway and the fixing perforation of chalk.Can be fixed on whole shifter on the rule by rotating nut, also can be fixed on chalk in the fixing perforation of chalk.And the effect of connecting plate is the effectiveness with stiffener, can be so that the rotating nut rotation is fixing tighter.
Claims (2)
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 that runs through body, the place, top that is positioned at slideway on the described body offers peep hole, described peep hole communicates with slideway, offer the fixing perforation of the chalk corresponding with peep hole on the described body, the both sides of described body are provided with the connecting plate that parallels with slideway, and described connecting plate is provided with the rotating nut that communicates with slideway and the fixing perforation of chalk.
2. the shifter of compasses as claimed in claim 1 is characterized in that, described glassy layer is the safety glass layer.
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 true CN103317916A (en) | 2013-09-25 |
| CN103317916B 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 (7)
| 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 |
| KR101103946B1 (en) * | 2009-09-24 | 2012-01-12 | 한전케이피에스 주식회사 | Compasses for a Gas Cutter |
| CN203449813U (en) * | 2013-06-14 | 2014-02-26 | 雷洪炳 | Mobile device for compasses |
-
2013
- 2013-06-14 CN CN201310234924.3A patent/CN103317916B/en not_active Expired - Fee Related
Patent Citations (7)
| 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 |
| KR101103946B1 (en) * | 2009-09-24 | 2012-01-12 | 한전케이피에스 주식회사 | Compasses for a Gas Cutter |
| 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 |
|---|---|
| CN103317916B (en) | 2016-01-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| 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 |