CN202079990U - 一种无尘环保课堂书写板 - Google Patents
一种无尘环保课堂书写板 Download PDFInfo
- Publication number
- CN202079990U CN202079990U CN2011202095898U CN201120209589U CN202079990U CN 202079990 U CN202079990 U CN 202079990U CN 2011202095898 U CN2011202095898 U CN 2011202095898U CN 201120209589 U CN201120209589 U CN 201120209589U CN 202079990 U CN202079990 U CN 202079990U
- Authority
- CN
- China
- Prior art keywords
- magnetic
- board
- friendly
- classroom
- pen
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000000696 magnetic material Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 9
- 210000003660 Reticulum Anatomy 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 2
- 239000011120 plywood Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- 229910052742 iron Inorganic materials 0.000 description 11
- 239000000843 powder Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 7
- 101700015180 PEN2A Proteins 0.000 description 5
- 101710042596 PSENEN Proteins 0.000 description 5
- 229910052788 barium Inorganic materials 0.000 description 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium(0) Chemical compound data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nMzAwcHgnIGhlaWdodD0nMzAwcHgnIHZpZXdCb3g9JzAgMCAzMDAgMzAwJz4KPCEtLSBFTkQgT0YgSEVBREVSIC0tPgo8cmVjdCBzdHlsZT0nb3BhY2l0eToxLjA7ZmlsbDojRkZGRkZGO3N0cm9rZTpub25lJyB3aWR0aD0nMzAwLjAnIGhlaWdodD0nMzAwLjAnIHg9JzAuMCcgeT0nMC4wJz4gPC9yZWN0Pgo8dGV4dCB4PScxMzguMCcgeT0nMTcwLjAnIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6NDBweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiMzQjQxNDMnID5CPC90ZXh0Pgo8dGV4dCB4PScxNjUuNicgeT0nMTcwLjAnIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6NDBweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiMzQjQxNDMnID5hPC90ZXh0Pgo8cGF0aCBkPSdNIDE4OS44LDE0Ni4wIEwgMTg5LjgsMTQ1LjggTCAxODkuOCwxNDUuNyBMIDE4OS44LDE0NS41IEwgMTg5LjcsMTQ1LjMgTCAxODkuNiwxNDUuMiBMIDE4OS42LDE0NS4wIEwgMTg5LjUsMTQ0LjkgTCAxODkuNCwxNDQuNyBMIDE4OS4zLDE0NC42IEwgMTg5LjEsMTQ0LjUgTCAxODkuMCwxNDQuNCBMIDE4OC44LDE0NC4zIEwgMTg4LjcsMTQ0LjIgTCAxODguNSwxNDQuMSBMIDE4OC40LDE0NC4xIEwgMTg4LjIsMTQ0LjAgTCAxODguMCwxNDQuMCBMIDE4Ny45LDE0NC4wIEwgMTg3LjcsMTQ0LjAgTCAxODcuNSwxNDQuMCBMIDE4Ny40LDE0NC4xIEwgMTg3LjIsMTQ0LjEgTCAxODcuMCwxNDQuMiBMIDE4Ni45LDE0NC4yIEwgMTg2LjcsMTQ0LjMgTCAxODYuNiwxNDQuNCBMIDE4Ni41LDE0NC41IEwgMTg2LjMsMTQ0LjcgTCAxODYuMiwxNDQuOCBMIDE4Ni4xLDE0NC45IEwgMTg2LjAsMTQ1LjEgTCAxODYuMCwxNDUuMiBMIDE4NS45LDE0NS40IEwgMTg1LjksMTQ1LjYgTCAxODUuOCwxNDUuNyBMIDE4NS44LDE0NS45IEwgMTg1LjgsMTQ2LjEgTCAxODUuOCwxNDYuMyBMIDE4NS45LDE0Ni40IEwgMTg1LjksMTQ2LjYgTCAxODYuMCwxNDYuOCBMIDE4Ni4wLDE0Ni45IEwgMTg2LjEsMTQ3LjEgTCAxODYuMiwxNDcuMiBMIDE4Ni4zLDE0Ny4zIEwgMTg2LjUsMTQ3LjUgTCAxODYuNiwxNDcuNiBMIDE4Ni43LDE0Ny43IEwgMTg2LjksMTQ3LjggTCAxODcuMCwxNDcuOCBMIDE4Ny4yLDE0Ny45IEwgMTg3LjQsMTQ3LjkgTCAxODcuNSwxNDguMCBMIDE4Ny43LDE0OC4wIEwgMTg3LjksMTQ4LjAgTCAxODguMCwxNDguMCBMIDE4OC4yLDE0OC4wIEwgMTg4LjQsMTQ3LjkgTCAxODguNSwxNDcuOSBMIDE4OC43LDE0Ny44IEwgMTg4LjgsMTQ3LjcgTCAxODkuMCwxNDcuNiBMIDE4OS4xLDE0Ny41IEwgMTg5LjMsMTQ3LjQgTCAxODkuNCwxNDcuMyBMIDE4OS41LDE0Ny4xIEwgMTg5LjYsMTQ3LjAgTCAxODkuNiwxNDYuOCBMIDE4OS43LDE0Ni43IEwgMTg5LjgsMTQ2LjUgTCAxODkuOCwxNDYuMyBMIDE4OS44LDE0Ni4yIEwgMTg5LjgsMTQ2LjAgTCAxODcuOCwxNDYuMCBaJyBzdHlsZT0nZmlsbDojMDAwMDAwO2ZpbGwtcnVsZTpldmVub2RkO2ZpbGwtb3BhY2l0eToxO3N0cm9rZTojMDAwMDAwO3N0cm9rZS13aWR0aDowLjBweDtzdHJva2UtbGluZWNhcDpidXR0O3N0cm9rZS1saW5lam9pbjptaXRlcjtzdHJva2Utb3BhY2l0eToxOycgLz4KPHBhdGggZD0nTSAxODkuOCwxNTQuMCBMIDE4OS44LDE1My44IEwgMTg5LjgsMTUzLjcgTCAxODkuOCwxNTMuNSBMIDE4OS43LDE1My4zIEwgMTg5LjYsMTUzLjIgTCAxODkuNiwxNTMuMCBMIDE4OS41LDE1Mi45IEwgMTg5LjQsMTUyLjcgTCAxODkuMywxNTIuNiBMIDE4OS4xLDE1Mi41IEwgMTg5LjAsMTUyLjQgTCAxODguOCwxNTIuMyBMIDE4OC43LDE1Mi4yIEwgMTg4LjUsMTUyLjEgTCAxODguNCwxNTIuMSBMIDE4OC4yLDE1Mi4wIEwgMTg4LjAsMTUyLjAgTCAxODcuOSwxNTIuMCBMIDE4Ny43LDE1Mi4wIEwgMTg3LjUsMTUyLjAgTCAxODcuNCwxNTIuMSBMIDE4Ny4yLDE1Mi4xIEwgMTg3LjAsMTUyLjIgTCAxODYuOSwxNTIuMiBMIDE4Ni43LDE1Mi4zIEwgMTg2LjYsMTUyLjQgTCAxODYuNSwxNTIuNSBMIDE4Ni4zLDE1Mi43IEwgMTg2LjIsMTUyLjggTCAxODYuMSwxNTIuOSBMIDE4Ni4wLDE1My4xIEwgMTg2LjAsMTUzLjIgTCAxODUuOSwxNTMuNCBMIDE4NS45LDE1My42IEwgMTg1LjgsMTUzLjcgTCAxODUuOCwxNTMuOSBMIDE4NS44LDE1NC4xIEwgMTg1LjgsMTU0LjMgTCAxODUuOSwxNTQuNCBMIDE4NS45LDE1NC42IEwgMTg2LjAsMTU0LjggTCAxODYuMCwxNTQuOSBMIDE4Ni4xLDE1NS4xIEwgMTg2LjIsMTU1LjIgTCAxODYuMywxNTUuMyBMIDE4Ni41LDE1NS41IEwgMTg2LjYsMTU1LjYgTCAxODYuNywxNTUuNyBMIDE4Ni45LDE1NS44IEwgMTg3LjAsMTU1LjggTCAxODcuMiwxNTUuOSBMIDE4Ny40LDE1NS45IEwgMTg3LjUsMTU2LjAgTCAxODcuNywxNTYuMCBMIDE4Ny45LDE1Ni4wIEwgMTg4LjAsMTU2LjAgTCAxODguMiwxNTYuMCBMIDE4OC40LDE1NS45IEwgMTg4LjUsMTU1LjkgTCAxODguNywxNTUuOCBMIDE4OC44LDE1NS43IEwgMTg5LjAsMTU1LjYgTCAxODkuMSwxNTUuNSBMIDE4OS4zLDE1NS40IEwgMTg5LjQsMTU1LjMgTCAxODkuNSwxNTUuMSBMIDE4OS42LDE1NS4wIEwgMTg5LjYsMTU0LjggTCAxODkuNywxNTQuNyBMIDE4OS44LDE1NC41IEwgMTg5LjgsMTU0LjMgTCAxODkuOCwxNTQuMiBMIDE4OS44LDE1NC4wIEwgMTg3LjgsMTU0LjAgWicgc3R5bGU9J2ZpbGw6IzAwMDAwMDtmaWxsLXJ1bGU6ZXZlbm9kZDtmaWxsLW9wYWNpdHk6MTtzdHJva2U6IzAwMDAwMDtzdHJva2Utd2lkdGg6MC4wcHg7c3Ryb2tlLWxpbmVjYXA6YnV0dDtzdHJva2UtbGluZWpvaW46bWl0ZXI7c3Ryb2tlLW9wYWNpdHk6MTsnIC8+Cjwvc3ZnPgo= data:image/svg+xml;base64,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 [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 5
- 239000006249 magnetic particle Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001466460 Alveolata Species 0.000 description 1
- 230000036536 Cave Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Abstract
本实用新型公开了一种无尘环保课堂书写板，涉及一种教学用具，无尘、无环境污染，低消耗，字迹清晰，并可以随意擦除，适合教师课堂授课使用。该无尘环保课堂书写板包括板体、磁性板擦和磁笔，其中板体为透明的两层夹板，夹板中设置有密封网格，磁性板擦和磁笔均由磁性材料制成；其特征在于：所述密封网格中充填有色磁性物质，所述磁性物质与磁笔笔端极性相异，与板擦表面的极性相同。与现有技术相比较，本实用新型具有无尘、无环境污染的特点。
Description
一种无尘环保课堂书写板
技术领域
[0001] 本实用新型涉及一种教学用具，特别是涉及一种适用于垂直悬挂的磁力黑板。 背景技术
[0002] 目前教学使用的黑板基本上可以分为：粉笔用黑板和磁力笔用白板。粉笔用黑板由于使用粉笔书写，毡刷擦除，容易造成粉尘污染，影响人体健康。现有技术中的磁力笔用白板基本结构为在书写板的下面放置一些铁粉，利用磁铁棒在书写板上移动将铁粉吸附在书写板底面上显示出移动的轨迹，需要擦掉铁粉时，再使用一个置于书写板底面的刮尺将铁粉刮去。这种黑板虽然无尘、无消耗，但是尚存在以下不足：①该种书写板只能在平铺状态下使用，否则铁粉会依重力沉聚在书写板的下侧，而无法使用；②铁粉易分散导致字迹不清晰；③由于是采用刮尺滑动刮擦进行擦除，所以无法随心所欲地擦拭任一书写部分，不适合课堂教学。
实用新型内容
[0003] 本实用新型所要解决的技术问题是提供一种无尘环保课堂书写板，利用磁性物质的相互作用原理，解决现有磁力黑板无法自由擦除的问题。
[0004] 为达到上述目的，本实用新型提供了一种无尘环保课堂书写板，其特征在于：包括板体、磁性板擦和磁笔，其中板体为两层透明夹板，夹板中设有密封网格，磁性板擦和磁笔均由磁性材料制成；所述密封网格中充填有色磁性物质，所述磁性物质与磁笔笔端极性相异，与板擦表面的极性相同。
[0005] 上述的密封网格为蜂窝状排列。
[0006] 本实用新型的技术效果在于：
[0007] 1、无尘、无环境污染，利于师生们的身体健康；
[0008] 2、低消耗，节能减排，符合环保要求；
[0009] 3、随意擦除，适合教师课堂授课使用；
[0010] 4、字迹清晰，不易变形，持久耐用。
附图说明
[0011] 图1是本实用新型的结构和使用示意图。 具体实施方式
[0012] 下面结合附图进一步详细说明本实用新型的具体实施例。
[0013] 如图1所示，本实用新型包括板体1、磁性板擦3和磁笔2。
[0014] 其中，板体1为透明的两层夹板，夹板中设置有密封网格4，可为一次压制而成。密封网格4可按横竖行逐行或逐室间隔排列或按蜂窝状排列。一切使穴室紧密排列，并使相互之间的间隔尽量缩小的排列方式都是可取的。但可以尽量减少磁性颗粒的相互影响的排列方式应被优先采用。其中蜂窝状结构是最为合理的排列方式，这样可以有效地减少磁性颗粒转动时的周边干扰。
[0015] 如图Ι-a所示，所述密封网格4中充灌满有色磁性物质5，可以是本身有色或者在制作中进行上色。所述的磁性物质5为液体石腊与钡恒磁铁粉颗粒混悬液，所述液体石腊与钡恒磁铁粉颗粒混悬液比例为2〜3 :1。
[0016] 磁性板擦3和磁笔2均由磁性材料制成。所述密封网格4中的磁性物质5与磁笔 2笔端极性相异，与板擦3表面的极性相同。
[0017] 使用时，利用磁性物质5的相互作用原理，如图l_b所示，靠磁笔2将板体1中的磁性微粒吸附在黑板透明薄板表面之下，通过磁性微粒与板体1的色差显示字迹。如图1-c 所示，磁性板擦3的表面极性与磁性微粒极性相同，在擦拭过程中将磁性微粒推入板体1， 可消失字迹。由于钡恒磁铁粉颗粒在液体石腊中的悬浮密布，故在受外界磁力作用下可进行灵活、准确的位移，贴附于黑板透明薄板下，显示出连续性较好的清晰字迹。而液体石腊与钡恒磁铁粉颗粒混悬液之间的密度比例为2〜3 :1，保证了即使磁笔2离开了黑板，钡恒磁铁粉颗粒仍然能稳定地保持相应的位置与状态，避免出现字迹移位等现象。
[0018] 以上所述仅为本实用新型的较佳实施例，并非用来限定本实用新型的实施范围； 凡是依本实用新型所作的等效变化与修改，都被本实用新型的专利范围所涵盖。
Claims (2)
1. 一种无尘环保课堂书写板，其特征在于：包括板体、磁性板擦和磁笔，其中板体为两层透明夹板，夹板中设有密封网格，磁性板擦和磁笔均由磁性材料制成；所述密封网格中充填有色磁性物质，所述磁性物质与磁笔笔端极性相异，与板擦表面的极性相同。
2.根据权利要求1所述的无尘环保课堂书写板，其特征在于，所述的密封网格为蜂窝状排列。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202095898U CN202079990U (zh) | 2011-06-21 | 2011-06-21 | 一种无尘环保课堂书写板 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202095898U CN202079990U (zh) | 2011-06-21 | 2011-06-21 | 一种无尘环保课堂书写板 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202079990U true CN202079990U (zh) | 2011-12-21 |
Family
ID=45340644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202095898U Expired - Fee Related CN202079990U (zh) | 2011-06-21 | 2011-06-21 | 一种无尘环保课堂书写板 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202079990U (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101762691B1 (ko) | 2016-05-18 | 2017-07-28 | 장지우 | 전자석 칠판 |
-
2011
- 2011-06-21 CN CN2011202095898U patent/CN202079990U/zh not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101762691B1 (ko) | 2016-05-18 | 2017-07-28 | 장지우 | 전자석 칠판 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201633383U (zh) | 一种可进行自由擦除的磁粒黑板 | |
| CN203126247U (zh) | 一种多媒体教室黑板 | |
| CN201494176U (zh) | 投影、写字两用黑板 | |
| CN201970689U (zh) | 可以显示双色的磁性黑板 | |
| CN206493760U (zh) | 一种用于经济类教学的折线统计板 | |
| CN202079990U (zh) | 一种无尘环保课堂书写板 | |
| CN203995303U (zh) | 带板擦的防尘黑板 | |
| CN206664078U (zh) | 一种复合黑板 | |
| CN202557056U (zh) | 一种教学用可翻转双面黑白板 | |
| CN203142164U (zh) | 折叠黑板 | |
| CN202742918U (zh) | 一种两用防尘黑板擦装置 | |
| CN207449469U (zh) | 一种黑板 | |
| CN203110664U (zh) | 一种多功能教学板 | |
| CN204236072U (zh) | 免擦型环保写字屏 | |
| CN204322834U (zh) | 高清晰度的写字贴膜 | |
| CN204236077U (zh) | 免擦拭写字板 | |
| CN202641191U (zh) | 带有放置台具有自动清洁功能的教学写字板 | |
| CN204322857U (zh) | 一种吸尘黑板擦 | |
| CN201745321U (zh) | 无尘黑板 | |
| CN101127175A (zh) | 教室用大屏幕等离子显示器 | |
| CN202608344U (zh) | 英语教学用的一种无尘黑板 | |
| CN206880297U (zh) | 一种教学使用的粉笔盒 | |
| CN202623687U (zh) | 一种简易英语教学板 | |
| CN202641153U (zh) | 带有投影设备和清洁刷的教学写字板 | |
| CN204236074U (zh) | 具有易擦功能的写字机构 |
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: 20111221 Termination date: 20120621 |