CN204414927U - A kind of multifunctional teaching ruler of anti-fall chalk dust - Google Patents
A kind of multifunctional teaching ruler of anti-fall chalk dust Download PDFInfo
- Publication number
- CN204414927U CN204414927U CN201520021775.7U CN201520021775U CN204414927U CN 204414927 U CN204414927 U CN 204414927U CN 201520021775 U CN201520021775 U CN 201520021775U CN 204414927 U CN204414927 U CN 204414927U
- Authority
- CN
- China
- Prior art keywords
- ruler
- protractor
- chalk
- arc limit
- sidewall
- 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
A multifunctional teaching ruler for anti-fall chalk dust, relates to a kind of teaching aid, comprises ruler, protractor and chalk sleeve, and described protractor is made up of semi-circular arc limit and the straight flange that is fixedly connected with two ends, arc limit; Described ruler is two, same one end of two rulers is fixed in the center position of protractor straight flange, ruler can rotate around bearing pin, the other end of ruler rides on protractor semi-circular arc limit, the sidewall of described protractor and ruler is all embedded with magnet, described chalk sleeve is irony cylinder hollow cover, and the width of chalk sleeve is consistent with the width of protractor and ruler sidewall, and chalk sleeve is adsorbed on protractor and ruler sidewall.The utility model is by being provided with irony chalk sleeve, on the ruler sidewall that chalk sleeve is adsorbed on containing magnet, like this when drawing, chalk directly can not contact with ruler, thus avoid the problem leaving chalk dust at ruler sidewall, protractor is also provided with parcel tray, chalk sleeve can be placed easily, prevent chalk sleeve from losing, chalk can also be placed and be easy to carry.
Description
Technical field
The utility model relates to a kind of teaching aid, specifically a kind of multifunctional teaching ruler of anti-fall chalk dust.
Background technology
In middle school teaching, the teaching ruler of math teacher is almost indispensable, general teacher is upper all can carry three rulers class hour, protractor, drawing square and isosceles chi, need several ruler to combinationally use when graphing, because be draw on vertical blackboard, there will be unavoidably ruler crooked, drop and draw the problem such as inaccurate, not only added difficulty that teacher draws but also delayed the class period.
No matter which kind of teaching ruler in addition, the sidewall of ruler in use all can be stained with chalk dust, make the full chalk ash taking the people of ruler also can do, especially teacher has a class and also ruler will be brought back office, desk will be made everywhere also to be chalk dust if do not cleaned out, dust not easy to clean again, and be very easy to be stained with everywhere, and the long-term dust that sucks also is harmful to health very much.
Utility model content
The purpose of this utility model is the multifunctional teaching ruler providing a kind of anti-fall chalk dust, solves the above problems.
The utility model solves the technical scheme that its technical problem adopts: a kind of multifunctional teaching ruler of anti-fall chalk dust, it is characterized in that, comprise ruler, protractor and chalk sleeve, described protractor is made up of semi-circular arc limit and the straight flange that is fixedly connected with two ends, arc limit; Described ruler is two, same one end of two rulers is fixed in the center position of protractor straight flange, ruler can rotate around bearing pin, the other end of ruler rides on protractor semi-circular arc limit, the sidewall of described protractor and ruler is all embedded with magnet, described chalk sleeve is irony cylinder hollow cover, and the width of chalk sleeve is consistent with the width of protractor and ruler sidewall, and chalk sleeve is adsorbed on protractor and ruler sidewall.
The one side that the semi-circular arc limit of described protractor contacts with ruler is provided with a circle groove, and one end that ruler contacts with semi-circular arc limit is fixed with positioning sliding block, and described positioning sliding block is positioned on groove and can slides along groove.
The one side that the semi-circular arc limit of described protractor contacts with ruler is provided with a circle groove, and one end that ruler contacts with semi-circular arc limit is fixed with positioning sliding block, and described positioning sliding block is positioned at groove and can slides along groove.
The straight flange of described protractor is also fixed with a strip parcel tray, the side of parcel tray is provided with end cap, and parcel tray both sides are provided with chute, and end cap both sides are positioned at chute can along slide.
The beneficial effects of the utility model are: adopt two rulers to be combined the figure can drawing various angle easily with protractor, other end activity is fixed in ruler and protractor one end, both mobile ruler after having facilitated fixed amount hornwork, amount of movement hornwork after convenient fixing ruler, use brings convenience again; Protractor adopts the engraved structure of arc limit and straight flange, first can only mark the problem of two-end-point and then line, directly can draw straight line in protractor after angular metric can be avoided good.By being provided with irony chalk sleeve, on the ruler sidewall that chalk sleeve is adsorbed on containing magnet, like this when drawing, chalk directly can not contact with ruler, thus avoid the problem leaving chalk dust at ruler sidewall, protractor is also provided with parcel tray, chalk sleeve can be placed easily, prevent chalk sleeve from losing, chalk can also be placed and be easy to carry.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model,
Fig. 2 is the A-A view of embodiment two,
Fig. 3 is the B-B view of embodiment three.
In figure: 1 ruler, 2 protractors, 21 arc limits, 22 straight flanges, 23 grooves, 3 positioning sliding blocks, 4 bolt and nuts, 5 chalk sleeves, 6 magnet, 7 parcel trays.
Detailed description of the invention
As Figure 1-3, below in conjunction with detailed description of the invention, the utility model is described further.
Embodiment one,
A multifunctional teaching ruler for anti-fall chalk dust, comprises ruler, protractor and chalk sleeve, and described protractor is made up of semi-circular arc limit and the straight flange that is fixedly connected with two ends, arc limit; Described ruler is two, same one end of two rulers is fixed in the center position of protractor straight flange, ruler can rotate around bearing pin, the other end of ruler rides on protractor semi-circular arc limit, the sidewall of described protractor and ruler is all embedded with magnet, described chalk sleeve is irony cylinder hollow cover, and the width of chalk sleeve is consistent with the width of protractor and ruler sidewall, and chalk sleeve is adsorbed on protractor and ruler sidewall.
The straight flange of described protractor is also fixed with a strip parcel tray, the side of parcel tray is provided with end cap, and parcel tray both sides are provided with chute, and end cap both sides are positioned at chute can along slide.
During use, chalk is inserted in chalk sleeve, make the magnet adsorption on chalk sleeve and ruler, like this when drawing, chalk directly can not contact with ruler sidewall, thus avoids the problem leaving chalk dust, and what chalk sleeve adopted in addition is adsorb with ruler the structure be connected, so just can be convenient to user freely draw, and can not because of structure constraint.
Embodiment two,
A multifunctional teaching ruler for anti-fall chalk dust, comprises ruler, protractor and chalk sleeve, and described protractor is made up of semi-circular arc limit and the straight flange that is fixedly connected with two ends, arc limit; Described ruler is two, same one end of two rulers is fixed in the center position of protractor straight flange, ruler can rotate around bearing pin, the other end of ruler rides on protractor semi-circular arc limit, the sidewall of described protractor and ruler is all embedded with magnet, described chalk sleeve is irony cylinder hollow cover, and the width of chalk sleeve is consistent with the width of protractor and ruler sidewall, and chalk sleeve is adsorbed on protractor and ruler sidewall.
The one side that the semi-circular arc limit of described protractor contacts with ruler is provided with a circle groove, and one end that ruler contacts with semi-circular arc limit is fixed with positioning sliding block, and described positioning sliding block is positioned on groove and can slides along groove
During use, the angle between ruler can be adjusted, throughput hornwork determines the angle between two rulers, because two rulers are all movable, therefore can draw arbitrary angle, and be engraved structure because protractor is middle, can be complete draw angle straight line, as needed to extend, extension line can be done with ruler again, avoiding original protractor first can only draw the problem that two-end-point does line again.The one end that ruler can also be fixed with positioning sliding block is lifted down from protractor, like this can convenient amount hornwork measuring angle, and ruler can with extended line of drawing a picture.
Embodiment three,
A multifunctional teaching ruler for anti-fall chalk dust, comprises ruler, protractor and chalk sleeve, and described protractor is made up of semi-circular arc limit and the straight flange that is fixedly connected with two ends, arc limit; Described ruler is two, same one end of two rulers is fixed in the center position of protractor straight flange, ruler can rotate around bearing pin, the other end of ruler rides on protractor semi-circular arc limit, the sidewall of described protractor and ruler is all embedded with magnet, described chalk sleeve is irony cylinder hollow cover, and the width of chalk sleeve is consistent with the width of protractor and ruler sidewall, and chalk sleeve is adsorbed on protractor and ruler sidewall; The one side that the semi-circular arc limit of described protractor contacts with ruler is provided with a circle groove, one end that ruler contacts with semi-circular arc limit is fixed with positioning sliding block, described positioning sliding block is stuck in groove, can slide along groove, and in use positioning sliding block can also play the effect of integrated support location.
Claims (4)
1. a multifunctional teaching ruler for anti-fall chalk dust, is characterized in that, comprises ruler, protractor and chalk sleeve, and described protractor is made up of semi-circular arc limit and the straight flange that is fixedly connected with two ends, arc limit; Described ruler is two, same one end of two rulers is fixed in the center position of protractor straight flange, ruler can rotate around bearing pin, the other end of ruler rides on protractor semi-circular arc limit, the sidewall of described protractor and ruler is all embedded with magnet, described chalk sleeve is irony cylinder hollow cover, and the width of chalk sleeve is consistent with the width of protractor and ruler sidewall, and chalk sleeve is adsorbed on protractor and ruler sidewall.
2. the multifunctional teaching ruler of a kind of anti-fall chalk dust according to claim 1, it is characterized in that, the one side that the semi-circular arc limit of described protractor contacts with ruler is provided with a circle groove, one end that ruler contacts with semi-circular arc limit is fixed with positioning sliding block, and described positioning sliding block is positioned on groove and can slides along groove.
3. the multifunctional teaching ruler of a kind of anti-fall chalk dust according to claim 1, it is characterized in that, the one side that the semi-circular arc limit of described protractor contacts with ruler is provided with a circle groove, one end that ruler contacts with semi-circular arc limit is fixed with positioning sliding block, and described positioning sliding block is positioned at groove and can slides along groove.
4. the multifunctional teaching ruler of a kind of anti-fall chalk dust according to the arbitrary claim of claim 1-3, it is characterized in that, the straight flange of described protractor is also fixed with a strip parcel tray, the side of parcel tray is provided with end cap, parcel tray both sides are provided with chute, and end cap both sides are positioned at chute can along slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520021775.7U CN204414927U (en) | 2015-01-13 | 2015-01-13 | A kind of multifunctional teaching ruler of anti-fall chalk dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520021775.7U CN204414927U (en) | 2015-01-13 | 2015-01-13 | A kind of multifunctional teaching ruler of anti-fall chalk dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204414927U true CN204414927U (en) | 2015-06-24 |
Family
ID=53465327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520021775.7U Expired - Fee Related CN204414927U (en) | 2015-01-13 | 2015-01-13 | A kind of multifunctional teaching ruler of anti-fall chalk dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204414927U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476497A (en) * | 2016-11-10 | 2017-03-08 | 陈征瀚 | A kind of Multifunctional angle scale |
| CN109649922A (en) * | 2019-01-24 | 2019-04-19 | 安徽唯嵩光电科技有限公司 | A kind of adjustable-angle arc chute |
-
2015
- 2015-01-13 CN CN201520021775.7U patent/CN204414927U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476497A (en) * | 2016-11-10 | 2017-03-08 | 陈征瀚 | A kind of Multifunctional angle scale |
| CN109649922A (en) * | 2019-01-24 | 2019-04-19 | 安徽唯嵩光电科技有限公司 | A kind of adjustable-angle arc chute |
| CN109649922B (en) * | 2019-01-24 | 2024-01-09 | 安徽唯嵩光电科技有限公司 | Angle-adjustable arc chute |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150624 Termination date: 20160113 |