CN107718949A - One kind exempts from erasing dust-free blackboard - Google Patents
One kind exempts from erasing dust-free blackboard Download PDFInfo
- Publication number
- CN107718949A CN107718949A CN201711133987.4A CN201711133987A CN107718949A CN 107718949 A CN107718949 A CN 107718949A CN 201711133987 A CN201711133987 A CN 201711133987A CN 107718949 A CN107718949 A CN 107718949A
- Authority
- CN
- China
- Prior art keywords
- blackboard
- cavity
- magnetic
- exempts
- blackboard body
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses one kind to exempt from erasing dust-free blackboard, including：Transparent blackboard body（1）, the blackboard body（1）Interior regular close-packed arrays have some oblong cavities（2）, the cavity（2）Inside it is provided with rotatable oval magnetic pole（3）, the cavity（2）Front and rear surfaces be provided with opening（4）, the cavity（2）It is made up of exhausted magnetic material, the blackboard body（1）Preceding surface be provided with magnetic sheet（5）, the magnetic sheet（5）It is movably set in spool（6）It is interior, the blackboard body（1）Lower section be provided with pencil box, be provided with magnetic pen in the pencil box（7）.One kind provided by the invention exempts from erasing dust-free blackboard, and using magnetic pole principle, easily writing and erasing, no dust are safe and healthy.
Description
Technical field
The present invention relates to one kind to exempt from erasing dust-free blackboard, belongs to education equipment technical field.
Background technology
Prevalence and application with Modern educational methodology, instructors seem increasingly to dote in multimedia teaching, and ignore
The irreplaceable effect of black board teaching on Traditional Classroom.In modern education, black board teaching this Traditional teaching means are still
So play its indispensable effect.Such as compulsory education, teacher asks the upper blackboard of student to do topic often needs large area
Blackboard；The old professor for departing from electronic age is considered further that, situations such as poorer small towns, mountain area or projecting apparatus repair, blackboard
Presence be still necessary.Existing blackboard is to use chalk-writing, and writing is laborious, and erasing the board also wastes time and energy, and powder
There is also harm for the health of teacher and student for dirt.
The content of the invention
Present invention solves the technical problem that being to provide one kind utilizes magnetic pole principle, and easily writing and erasing, no dust, peace
The blackboard of full health.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
One kind exempts from erasing dust-free blackboard, including：Transparent blackboard body, regular close-packed arrays have some ellipses in the blackboard body
Shape cavity, rotatable oval magnetic pole is provided with the cavity, the front and rear surfaces of the cavity are provided with opening,
The cavity is made up of exhausted magnetic material, and the preceding surface of the blackboard body is provided with magnetic sheet, and the magnetic sheet is movably set in spool
It is interior, pencil box is provided with below the blackboard body, magnetic pen is provided with the pencil box.
The magnetic material absolutely includes aluminium or copper material or graphite or silicon.
The front and rear surfaces of blackboard body described in the long axis connection of the cavity, the short axle of the cavity and the length of the magnetic pole
Axle is interference fitted.
The spool includes rotating bar, and the top of the magnetic sheet is connected with the rotating bar, and the rotating bar fills with driving
Put connected.
The drive device includes motor.
The short axle of the cavity is the 1/1000 ~ 1/100 of the blackboard body length.
One kind provided by the invention exempts from erasing dust-free blackboard, and oval magnetic pole is freely rotatable, and N, S pole can exchange rapidly, ellipse
N, S pole of round pole are respectively white and black, when magnetic sheet is located at before blackboard body, are influenceed by the magnetic force of magnetic sheet, ellipse
Towards one side, blackboard body is black or white, then packs up magnetic sheet for the same pole of round pole, when needing to use magnetic pen book
When writing writing on the blackboard, the writing end of magnetic pen and the writing surface magnetic pole of blackboard body are on the contrary, can to write magnetic pen local
Oval magnetic polarity reversal, the place for writing magnetic pen is different from the local color do not write, that is, shows in writing
Hold, when needing to erase the board, only need to put down magnetic sheet again, you can blackboard is restored, therefore the present invention easily writing and erasing, no powder
Dirt, it is safe and healthy.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of cavity in the present invention.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As shown in Fig. 1 ~ Fig. 2, one kind exempts from erasing dust-free blackboard, including：Transparent blackboard body 1, the blackboard body 1 is interior to advise
Then close-packed arrays have some oblong cavities 2, and rotatable oval magnetic pole 3, the cavity are provided with the cavity 2
2 front and rear surfaces are provided with opening 4, and opening 4 is available for the magnetic line of force by the way that the cavity 2 is made up of exhausted magnetic material, the blackboard
The preceding surface of body 1 is provided with magnetic sheet 5, and the magnetic sheet 5 is movably set in spool 6, and the lower section of the blackboard body 1 is provided with
Pencil box, magnetic pen 7 is provided with the pencil box.
The magnetic material absolutely includes aluminium or copper material or graphite or silicon.
The front and rear surfaces of blackboard body 1 described in the long axis connection of the cavity 2, the short axle of the cavity 2 and the magnetic pole 3
Major axis interference fit.
The spool 6 includes rotating bar, and the top of the magnetic sheet 5 is connected with the rotating bar, the rotating bar and driving
Device is connected.
The drive device includes motor.
The short axle of the cavity 2 is the 1/1000 ~ 1/100 of the length of blackboard body 1.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. one kind exempts from erasing dust-free blackboard, it is characterised in that：Including：Transparent blackboard body（1）, the blackboard body（1）Interior rule
Then close-packed arrays have some oblong cavities（2）, the cavity（2）Inside it is provided with rotatable oval magnetic pole（3）, institute
State cavity（2）Front and rear surfaces be provided with opening（4）, the cavity（2）It is made up of exhausted magnetic material, the blackboard body（1）
Preceding surface be provided with magnetic sheet（5）, the magnetic sheet（5）It is movably set in spool（6）It is interior, the blackboard body（1）Lower section set
Pencil box is equipped with, magnetic pen is provided with the pencil box（7）.
2. one kind according to claim 1 exempts from erasing dust-free blackboard, it is characterised in that：The magnetic material absolutely includes aluminium or copper
Material or graphite or silicon.
3. one kind according to claim 1 exempts from erasing dust-free blackboard, it is characterised in that：The cavity（2）Long axis connection institute
State blackboard body（1）Front and rear surfaces, the cavity（2）Short axle and the magnetic pole（3）Major axis interference fit.
4. one kind according to claim 1 exempts from erasing dust-free blackboard, it is characterised in that：The spool（6）Including rotating bar, institute
State magnetic sheet（5）Top be connected with the rotating bar, the rotating bar is connected with drive device.
5. one kind according to claim 4 exempts from erasing dust-free blackboard, it is characterised in that：The drive device includes motor.
6. one kind according to claim 3 exempts from erasing dust-free blackboard, it is characterised in that：The cavity（2）Short axle be described
Blackboard body（1）The 1/1000 ~ 1/100 of length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133987.4A CN107718949A (en) | 2017-11-16 | 2017-11-16 | One kind exempts from erasing dust-free blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133987.4A CN107718949A (en) | 2017-11-16 | 2017-11-16 | One kind exempts from erasing dust-free blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107718949A true CN107718949A (en) | 2018-02-23 |
Family
ID=61216706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711133987.4A Withdrawn CN107718949A (en) | 2017-11-16 | 2017-11-16 | One kind exempts from erasing dust-free blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107718949A (en) |
-
2017
- 2017-11-16 CN CN201711133987.4A patent/CN107718949A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180223 |