CN2383692Y - Curved surface blackboard - Google Patents
Curved surface blackboard Download PDFInfo
- Publication number
- CN2383692Y CN2383692Y CN 99224753 CN99224753U CN2383692Y CN 2383692 Y CN2383692 Y CN 2383692Y CN 99224753 CN99224753 CN 99224753 CN 99224753 U CN99224753 U CN 99224753U CN 2383692 Y CN2383692 Y CN 2383692Y
- Authority
- CN
- China
- Prior art keywords
- blackboard
- curved surface
- adhesive layer
- curved
- equal
- 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
- 239000012790 adhesive layer Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 241000628997 Flos Species 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 230000004438 eyesight Effects 0.000 abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 2
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 2
- 229920000742 Cotton Polymers 0.000 abstract 1
- 239000006260 foam Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000004753 textile Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a curved surface blackboard. A curved plate is arranged in a frame, and the optimum curvature c is equal to 3000m/m; H is equal to 65 M / M; the curvature radius r is equal to 17890m/m. The surface structure is as follows: a steel base board, an adhesive layer, a foam layer, the adhesive layer, a cotton textile layer, the adhesive layer and a surface coat are arranged sequentially. The curved surface blackboard is an improvement of the traditional blackboard and has the advantages of reasonable design and simple structure. The curved surface blackboard is made of high-grade alloy steel plates, and the plate is coated with wear-resistant layers, and frames of the plate are processed by aluminum alloy sections. The curved surface blackboard also has the advantages of easy manufacture and assembly, firm structure and beautiful appearance. The blackboard surface is black, dark green or white, which can prevent light reflection and protect the vision of students. The curved surface blackboard is an ideal teaching aid in modern teaching.
Description
The utility model relates to blackboard, particularly has the steel blackboard of curved surface.
Traditional blackboard all is the plane, under the reflection of light, sight equation influences student eyesight, and only is glass, and is wooden, is difficult to satisfy modernizing teaching and uses.
The purpose of this utility model is at above deficiency, and the steel blackboard that a kind of plate face is provided is curved surface is conveniently write, and vision protection increases the service life, and improves the quality of teaching.
Curved surface blackboard comprises curved slab 1, frame 2, it is characterized in that being provided with in the frame 2 curved slab 1.
The utility model is the improvement of traditional blackboard, and it is novel, and is reasonable in design; simple in structure, curved slab adopts the high duty alloy steel plate, is coated with wear-resistant coating; frame is that aluminium alloy extrusions processes, and is convenient to make, assemble sound construction; aesthetic in appearance, blackboard can be black, blackish green or white, and its blackish green proof through test meets the not tired color that human eye bears most; can prevent the light reflection; the protection student eyesight is the desirable teaching aid of modernizing teaching, is suitable for penetration and promotion.
The utility model accompanying drawing 1 is a structural representation, and accompanying drawing 2 is a curved surface form schematic diagram, wherein curved slab 1, frame 2.
Embodiment:
The I type, Curved surface blackboard specification 3600 * 1200mm
2, II type, specification 3600 * 1300mm
2, III type, specification 4800 * 1200mm
2, IV type, specification 4800 * 1300mm
2, optimal curvatures c=3000m/mh=65m/m, radius of curvature R=17890m/m, surface texture are that steel substrate+adhesive layer+froth bed+adhesive layer+silk floss is knitted layer+adhesive layer+face coat.
Claims (4)
1, a kind of Curved surface blackboard comprises curved slab 1, frame 2, it is characterized in that being provided with in the frame 2 curved slab 1.
2, Curved surface blackboard according to claim 1 is characterized in that Curved surface blackboard specification 3600 * 1200mm
2Or 4800 * 1200mm
2
3, Curved surface blackboard according to claim 1 is characterized in that curved slab 1 curvature C=3000m/m, h=65m/m, radius of curvature R=17890m/m.
4, Curved surface blackboard according to claim 1 is characterized in that curved slab 1 surface texture is that steel substrate+adhesive layer+froth bed+adhesive layer+silk floss is knitted layer+adhesive layer+face coat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99224753 CN2383692Y (en) | 1999-08-11 | 1999-08-11 | Curved surface blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99224753 CN2383692Y (en) | 1999-08-11 | 1999-08-11 | Curved surface blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2383692Y true CN2383692Y (en) | 2000-06-21 |
Family
ID=34014737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99224753 Expired - Fee Related CN2383692Y (en) | 1999-08-11 | 1999-08-11 | Curved surface blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2383692Y (en) |
-
1999
- 1999-08-11 CN CN 99224753 patent/CN2383692Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |