CN86103988A - Magnetic display device - Google Patents
Magnetic display device Download PDFInfo
- Publication number
- CN86103988A CN86103988A CN 86103988 CN86103988A CN86103988A CN 86103988 A CN86103988 A CN 86103988A CN 86103988 CN86103988 CN 86103988 CN 86103988 A CN86103988 A CN 86103988A CN 86103988 A CN86103988 A CN 86103988A
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- China
- Prior art keywords
- display device
- display
- show
- mesh
- magnetic
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Abstract
The invention provides a kind of display device of writing, show with erasing and can carry out with one side.Easy to use, not pollution.
This apparatus features is to be marked with white emulsion between backboard that has mesh and transparent panel.Enclose a magnetic display body in each mesh.Display board shows that with disappearing wiping reaches the purpose that shows and disappear and show by the show pen with magnetic characteristic.Thereby satisfy teaching and account etc. to writing the requirement of display device.
Description
The present invention is a kind of display device of writing, particularly impart knowledge to students and usefulness such as account write display device.Present black plate and other clipboards have been replaced.
Existing clipboard.Adopt chalk or ink to write.Write with erasing a lot of inconvenience are all arranged.When adopting chalk.Health to the people is also influential.
For sort this problem out.Advise among the Japanese patent specification DE-JP53-127032.In white liquid, add magnetic particle and form the coefficient 5 dyne/cm that stagnates that speeds
2Above plasticity dispersion liquid.It is enclosed the 4mm that has between two base plates that gap is 0.5～2.0mm
2Mesh in.Constitute magnetic display board.But the writing that this display board is simultaneously write needs to go erasing at another side.
Task of the present invention is a kind of magnetic display device of design.Show with erasing and can carry out with one side.Easy to use.Do not pollute.
The scheme that the characteristic of claim 1 provides has solved this task.
This magnetic display device by display board, show pen, disappear and show that wiping three parts forms.Display board is by transparent panel; The plastic back plate of band mesh; Display body; White emulsion is formed.Display body is the small magnet of regular hexahedron, is 1400～1800 Gausses with remanent magnetism.Coercive force is made greater than the ferromagnetic material of 1300 oersteds.The 4mm that each independently connects by sulculus
2Mesh in place a display body.Inject white emulsion.The proportion of white emulsion is less than or equal to the proportion of display body.Display body is immersed in the white emulsion.Panel and base plate seal with cementing agent.Disappear and show that display board is a white under the state.
The penholder that nib that show pen is made by permanent magnet and hard material material are made is formed.Disappear and show that wiping is made up of permanent magnet and plastic handle.
Writing shown in this display device or figure.Hard.The sharpness height.Writing after steady in a long-termly keeping writing or the figure that draws.Write with erasing or local erasing and can carry out with one side, and convenient.Need firmly not act on display board, not have dust, need not prepare any ink yet.Reduce user's labour intensity effectively, improved condition of work.
Fig. 1: the cut-open view of display board of the present invention;
Fig. 2; Backboard front elevation for display board;
Fig. 3: be the backboard cut-open view;
Fig. 4: be the show pen cut-open view;
Fig. 5: be the show pen front elevation;
Fig. 6: the cut-open view that shows wiping for disappearing;
Fig. 7: the front elevation that shows wiping for disappearing;
The one-piece construction of display board has been described in Fig. 1 and Fig. 2 and Fig. 3.The display body of regular hexahedron (2) is placed on the 4mm that has of the backboard (1) of filling with white emulsion (4)
2Mesh (5) lining.Show under the effect of wiping with disappearing at show pen.Can be movable in mesh (5) lining.The available isotropic barium ferrite material of display body (2) is made.Magnetic property remanent magnetism is 1400～1800 Gausses; Coercive force is greater than 1300 oersteds.Mesh (5) degree of depth is greater than the height of display body (2).With cementing agent transparent glass panel (3) and the plastic back plate (1) that is added with the ferromagnetic material powder are sealed.The proportion of white emulsion (4) is close with display body (2) proportion.Mesh (5) wall has sulculus (6).
The magnetic property remanent magnetism that the nib that the show pen of describing in Fig. 4 and Fig. 5, permanent magnet are made (7) is fixed on upward written (7) material of plastic penholder (8) is 3100～3500 Gausses; Coercive force is 1600～2200 oersteds.
Wiping is shown in disappearing of describing in Fig. 6 and Fig. 7.Be to be fixed on the plastic handle (10) by permanent-magnet block (9).The magnetic characteristic remanent magnetism of ferromagnetic material is 3300～3800 Gausses; Coercive force is 2400～2800 oersteds.
Claims (5)
1. write display device for one kind, its display board has sealed each 4mm that independently connects between gapped two plate
2Mesh (5).Each mesh is placed with display part in (5), and feature of the present invention is that display part is 1400～1800 Gausses by remanent magnetism.The white liquid (4) that display body (2) that coercive force is made greater than the ferromagnetic material of 1300 oersteds and proportion are less than or equal to display body (2) proportion is formed.Show nib (7) and disappear and show that wiping all is a permanent magnet.
2. according to the magnetic display device of claim 1, the panel (3) that it is characterized in that display board is a hard transparent material.
3. according to the magnetic display device of claim 1, it is characterized in that mesh (5) is directly on the backboard (1) of display board.
4. according to the magnetic display device of claim 1 or 3, the material that it is characterized in that backboard (1) is plastics or the plastics that are added with the ferromagnetic material powder.
5. according to the magnetic display device of claim 1, it is characterized in that magnetic display body (2) is regular hexahedron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86103988 CN86103988A (en) | 1986-06-05 | 1986-06-05 | Magnetic display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86103988 CN86103988A (en) | 1986-06-05 | 1986-06-05 | Magnetic display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86103988A true CN86103988A (en) | 1987-12-16 |
Family
ID=4802273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86103988 Pending CN86103988A (en) | 1986-06-05 | 1986-06-05 | Magnetic display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86103988A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097518C (en) * | 1999-12-29 | 2003-01-01 | 全利五金塑胶玩具有限公司 | Magnetic writing board |
| CN100434284C (en) * | 2005-11-28 | 2008-11-19 | 倪亚辉 | Magnetic powder swimming type writing board |
-
1986
- 1986-06-05 CN CN 86103988 patent/CN86103988A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097518C (en) * | 1999-12-29 | 2003-01-01 | 全利五金塑胶玩具有限公司 | Magnetic writing board |
| CN100434284C (en) * | 2005-11-28 | 2008-11-19 | 倪亚辉 | Magnetic powder swimming type writing board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |