CN107599732B - Convenient magnetic drawing board - Google Patents
Convenient magnetic drawing board Download PDFInfo
- Publication number
- CN107599732B CN107599732B CN201711111683.8A CN201711111683A CN107599732B CN 107599732 B CN107599732 B CN 107599732B CN 201711111683 A CN201711111683 A CN 201711111683A CN 107599732 B CN107599732 B CN 107599732B
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- China
- Prior art keywords
- panel
- permanent magnet
- bottom plate
- drawing panel
- frame
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- Expired - Fee Related
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Abstract
The invention provides a convenient magnetic drawing board, which comprises a frame; a layer of permanent magnet bottom plate is fixed above the frame; a drawing panel is arranged above the permanent magnet bottom plate; the interior of the drawing panel comprises micro cavities which are densely distributed in a honeycomb shape, and white mucus and iron powder are arranged in each micro cavity; a supporting spring is connected between the drawing panel and the frame, and in a natural state, the supporting spring enables the distance between the drawing panel and the permanent magnet bottom plate to be larger than a safety distance; the safe distance satisfies the following condition: when the distance between the permanent magnet bottom plate and the drawing panel is greater than the safety distance, the magnetic attraction force of the permanent magnet bottom plate to the iron powder in the drawing panel is far smaller than the movement resistance of the white mucus to the iron powder; the drawing panel can be pressed down to be tightly attached to the permanent magnet bottom plate. The convenient magnetic drawing board can quickly and conveniently clear the panel content.
Description
Technical Field
The invention relates to the field of stationery and sports goods, in particular to a magnetic drawing board.
Background
The magnetic drawing board is a common cultural and sports entertainment article and comprises a panel formed by micro cavities densely distributed in a honeycomb shape, wherein white mucus and iron powder are arranged in each micro cavity; a permanent magnet strip which can move along the transverse direction of the panel is arranged behind the panel; after the permanent magnetic strip is scraped across the back of the whole panel, iron powder in the panel is completely attracted to the back of the panel, so that the front of the panel is white, and therefore, a magnetic pen is adopted, and writing or drawing can be performed on the front of the panel; when the content of the panel needs to be cleared, the permanent magnet strips can sweep the back surface of the panel once. However, in the process of moving the permanent magnet strip, since only one end of the permanent magnet can be applied with force, the force applied to the permanent magnet strip is obviously uneven, which causes the permanent magnet strip to be easily jammed with the frame of the magnetic drawing board, thereby affecting the moving speed of the permanent magnet strip. On the other hand, in general, because the iron powder needs to pass through the white mucus slowly and then reach the back of the panel under the action of the continuous magnetic attraction, the permanent magnet bar needs to be operated to sweep twice or three times back and forth to ensure that the front of the panel is relatively white, and the inclination of the permanent magnet bar is aggravated in the process of swinging the permanent magnet bar back and forth, so that the screen cleaning speed of the magnetic drawing board is limited to a greater extent.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a magnetic drawing board which can quickly and conveniently remove the contents of a panel.
The technical scheme adopted by the invention for solving the technical problems is as follows: the convenient magnetic drawing board comprises a frame; a layer of permanent magnet bottom plate is fixed above the frame; a drawing panel is arranged above the permanent magnet bottom plate; the interior of the drawing panel comprises micro cavities which are densely distributed in a honeycomb shape, and white mucus and iron powder are arranged in each micro cavity; a supporting spring is connected between the drawing panel and the frame, and in a natural state, the supporting spring enables the distance between the drawing panel and the permanent magnet bottom plate to be larger than a safety distance; the safe distance satisfies the following condition: when the distance between the permanent magnet bottom plate and the drawing panel is greater than the safety distance, the magnetic attraction force of the permanent magnet bottom plate to the iron powder in the drawing panel is far smaller than the movement resistance of the white mucus to the iron powder; the drawing panel can be pressed down to be tightly attached to the permanent magnet bottom plate.
Preferably, the frame is provided with a longitudinal slideway, a sliding column extending into the slideway is arranged below the panel, and the supporting spring is arranged between the bottom of the slideway and the sliding column; further, sliding resistance is arranged between the sliding column and the sliding way; the sliding resistance is smaller than the elastic supporting force of the supporting spring before the drawing panel is pushed up to the safe distance; therefore, the drawing panel can be slowly restored after being pushed to the surface of the permanent magnet bottom plate, so that the permanent magnet bottom plate has sufficient time to clear the contents of the drawing panel.
Preferably, the permanent magnet bottom plate forms a herringbone slope shape which is symmetrical left and right on the frame, and a rotating shaft is arranged on the middle line of the lower surface of the drawing panel; the drawing panel is pivoted to the downwards extending inserting plate through the rotating shaft, and the inserting plate can be inserted into a sliding groove which is formed in the frame and penetrates through the top edge of the permanent magnet bottom plate; the supporting spring is arranged between the inserting plate and the sliding groove; the drawing panel is characterized in that panel magnets are further arranged above the left side and the right side of the drawing panel, and frame magnets with the same poles repelling to the panel magnets are arranged in the frame, so that the supporting force of the supporting spring and the magnetic repulsion force of the panel magnets and the frame magnets jointly provide stable supporting force for the drawing panel.
The invention has the beneficial effects that: when the portable magnetic drawing board is used and the content on the drawing panel needs to be cleared, the drawing panel is pressed down to be close to the permanent magnetic bottom plate; after hands are loosened, the drawing panel can write or draw again, and compared with a traditional magnetic drawing board, the convenience is improved to a greater extent.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the portable magnetic drawing board.
Fig. 2 is a schematic diagram of a second embodiment of the portable magnetic drawing board.
Detailed Description
The invention is further illustrated with reference to the following figures and examples:
the first embodiment is as follows:
in the first embodiment shown in fig. 1, the portable magnetic drawing board comprises a frame 1; a layer of permanent magnet bottom plate 2 is fixed above the frame 1; a drawing panel 3 is arranged above the permanent magnet bottom plate 2; the drawing panel 3 is a conventional part, the interior of the drawing panel comprises micro cavities which are densely distributed in a honeycomb shape, and white mucus and iron powder are arranged in each micro cavity; a longitudinal slideway 10 is arranged on the frame 1, a sliding column 31 extending into the slideway 10 is arranged below the drawing panel 3, and a supporting spring 4 is arranged between the bottom of the slideway 10 and the sliding column 31; in a natural state, the supporting spring 4 enables the distance between the drawing panel 3 and the permanent magnet bottom plate 2 to be larger than a safety distance; the safe distance satisfies the following condition: when the distance between the permanent magnet bottom plate 2 and the drawing panel 3 is greater than the safety distance, the magnetic attraction force of the permanent magnet bottom plate 2 to the iron powder in the drawing panel 3 is far less than the movement resistance of the white mucus to the iron powder; the drawing panel 3 can be pressed down to be closely attached to the permanent magnet bottom plate 2.
In addition, sliding resistance exists between the sliding column 31 and the slideway 10; the sliding resistance is smaller than the elastic supporting force of the supporting spring 4 before the drawing panel 3 is pushed up to the safe distance; therefore, the drawing panel 3 can be slowly restored (the slow restoration is about 2 to 3 seconds) after being pushed to the surface of the permanent magnet bottom plate 2, so that the permanent magnet bottom plate 2 has sufficient time to clear the contents of the drawing panel 3.
In the first embodiment, when the portable magnetic drawing board is used and the content on the drawing panel 3 needs to be cleared, the drawing panel 3 is pressed down to be close to the permanent magnetic bottom plate 2; after the hands are loosened, the drawing panel 3 can write or draw again, and compared with the traditional magnetic drawing board, the convenience is improved to a greater extent.
Example two:
for the second embodiment shown in fig. 2, the difference from the first embodiment is that: the permanent magnet bottom plate 2 forms a herringbone slope shape which is symmetrical left and right on the frame 1, and a rotating shaft 30 is arranged on the central line of the lower surface of the drawing panel 3; the drawing panel is pivoted to an inserting plate 32 extending downwards through the rotating shaft 30, and the inserting plate 32 can be inserted into a sliding groove 10 which is formed in the frame 1 and penetrates through the top edge of the permanent magnet bottom plate 1; the supporting spring 4 is arranged between the inserting plate 32 and the sliding groove 10; panel magnets 51 are further arranged above the left side and the right side of the drawing panel 3, and frame magnets 52 which repel each other with the same poles as the panel magnets 51 are arranged in the frame 1, so that the supporting force of the supporting spring 4, the magnetic repulsion force of the panel magnets 51 and the frame magnets 52 jointly provide a relatively stable supporting force for the drawing panel 3; at this time, in a natural state, the support spring 4 makes a minimum distance between the drawing panel 3 and the permanent magnet base plate 2 greater than the safety distance, that is, makes a distance from a center line of the drawing panel 3 to a top edge of the permanent magnet base plate 2 greater than the safety distance.
As for the second embodiment, compared with the first embodiment, the pictures and texts on the half layout of the drawing panel 3 can be removed separately, specifically, after the drawing panel 3 is pressed down, the drawing panel is inclined to one side until the drawing panel 3 is close to a slope of the permanent magnetic bottom plate 2; when the pictures and texts of the whole drawing panel 3 need to be cleared, the drawing panel 3 is pressed down and swings left and right, and the drawing device is very convenient and fast.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the subject matter of the invention is intended to cover all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.
Claims (1)
1. A portable magnetic drawing board, comprising a frame (1); a layer of permanent magnet bottom plate (2) is fixed above the frame (1); a drawing panel (3) is arranged above the permanent magnet bottom plate (2); the interior of the drawing panel (3) comprises micro cavities which are densely distributed in a honeycomb shape, and white mucus and iron powder are arranged in each micro cavity; a supporting spring (4) is connected between the drawing panel (3) and the frame (1), and in a natural state, the supporting spring (4) enables the distance between the drawing panel (3) and the permanent magnet bottom plate (2) to be larger than a safety distance; the safe distance satisfies the following condition: when the distance between the permanent magnet bottom plate (2) and the drawing panel (3) is greater than the safety distance, the magnetic attraction force of the permanent magnet bottom plate (2) to the iron powder in the drawing panel (3) is far less than the movement resistance of the white mucus to the iron powder; the drawing panel (3) can be pressed down to be tightly attached to the permanent magnet bottom plate (2), and is characterized in that: the permanent magnet bottom plate (2) forms a herringbone slope shape which is symmetrical left and right on the frame (1), and a rotating shaft (30) is arranged on the middle line of the lower surface of the drawing panel (3); the drawing panel (3) is pivoted to an inserting plate (32) extending downwards by the rotating shaft (30), and the inserting plate (32) can be inserted into a sliding groove (10) which is formed in the frame (1) and penetrates through the top edge of the permanent magnet bottom plate (2); the supporting spring (4) is arranged between the inserting plate (32) and the sliding groove (10); panel magnets (51) are further arranged above the left side and the right side of the drawing panel (3), and frame magnets (52) which are repelled with the same poles of the panel magnets (51) are arranged in the frame (1), so that the supporting force of the supporting spring (4), the magnetic repulsion force of the panel magnets (51) and the frame magnets (52) jointly provide stable supporting force for the drawing panel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111683.8A CN107599732B (en) | 2017-11-13 | 2017-11-13 | Convenient magnetic drawing board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111683.8A CN107599732B (en) | 2017-11-13 | 2017-11-13 | Convenient magnetic drawing board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107599732A CN107599732A (en) | 2018-01-19 |
| CN107599732B true CN107599732B (en) | 2020-06-23 |
Family
ID=61085870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711111683.8A Expired - Fee Related CN107599732B (en) | 2017-11-13 | 2017-11-13 | Convenient magnetic drawing board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107599732B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700460B (en) * | 2019-11-04 | 2020-05-15 | 江苏柏芸金属科技有限公司 | Building curtain wall structure and construction method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2359132Y (en) * | 1998-07-14 | 2000-01-19 | 合利昌实业有限公司 | drawing board |
| CN204263832U (en) * | 2014-10-28 | 2015-04-15 | 安徽机电职业技术学院 | To paint from life device |
-
2017
- 2017-11-13 CN CN201711111683.8A patent/CN107599732B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN107599732A (en) | 2018-01-19 |
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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 | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Xianhua Inventor after: Yan Enqin Inventor after: Zhu Qiuhong Inventor before: Zhu Qiuhong |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200527 Address after: 250300, No. 2200, Ziwei Road, University Science Park, Changqing District, Shandong, Ji'nan Applicant after: SHANDONG WOMEN'S University Address before: Room 813, Block A, Dell Plaza, Kaiping Road, Wujiang District, Suzhou City, Jiangsu Province Applicant before: Zhu Qiuhong |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200623 Termination date: 20201113 |