CN2113167U

CN2113167U - Magnetic-inductive blackboard

Info

Publication number: CN2113167U
Application number: CN 92212066
Authority: CN
Inventors: 谢福旗
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-01-11
Filing date: 1992-01-11
Publication date: 1992-08-19

Abstract

The utility model relates to a magnetic-inductive blackboard, comprising two layers of organic glass (or high-strength plastic) plates and a layer of metal plate which is clamped in the two layers of organic glass plates, wherein, the outer surface of the organic glass is sprayed with a blackboard paint layer added with right amount of iron-containing pigment. A paper layer can be lined between the metal plate and the organic glass to make writing easy and elastic. The magnetic-inductive blackboard has the advantages of a wooden blackboard and a metal blackboard, and not only can hang magnetic charts, but also solves the three problems of rusting, deformation and hole penetrating of the metal blackboard. The service life of the utility model can reach more than eight years, and thus is an ideal replacing product of the metal blackboard.

Description

Magnetic-inductive blackboard

The utility model provides a kind of Magnetic-inductive blackboard that can hang the magnetic wall chart.

Existing blackboard can be divided into wooden blackboard and metal blackboard, and the former advantage is non-corrosive, indeformable, paint film difficult drop-off, but owing to not hanging the needs that the magnetic wall chart is difficult to satisfy teaching; Though the metal blackboard can be hung the magnetic wall chart, exist easily get rusty, easily depainting, the easy deadly defect of perforation, service life is shorter, generally has only about 2 years.

The purpose of this utility model is to provide a kind of can hang the magnetic wall chart, again non-corrosive, not depainting, be difficult for the Magnetic-inductive blackboard of perforation long service life.

Technical solution of the present utility model is: this blackboard is to form by being provided with metallic plate between the two-layer lucite (or other highstrenghtpiston, as engineering plastics), and spraying one deck is added with the blackboard paint of an amount of iron content pigment on the outer surface of lucite again.

Making step of the present utility model is: the blackboard paint that at first will be added with iron content pigment (as iron oxide red) is sprayed on the lucite (or other highstrenghtpiston), wait to coat with lacquer and do back metallic plate (as cold steel plate) on bonding between two lucite, use the aluminum frame around well at last.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the section of structure of the utility model embodiment 1;

Fig. 2 is embodiment 2 section of structures;

Fig. 3 is embodiment 3 section of structures.

Among the figure, 1-metallic plate, 2-poly (methyl methacrylate) plate, 3-are added with the blackboard enamelled coating of iron content pigment, 4-ply of paper.

With reference to Fig. 1, metallic plate (1) is the cold steel plate of 2.3mm, and it glueds joint between the thick poly (methyl methacrylate) plate of two-layer 3mm (2), and the outer surface of poly (methyl methacrylate) plate (2) is spraying the blackboard enamelled coating (3) that one deck is added with an amount of iron oxide red.

For make write feel relief, comfortable, flexible, can between metallic plate (1) and two-layer poly (methyl methacrylate) plate (2), respectively put a piece of paper underneath the layer (4), shown in embodiment 2, the used ply of paper of this example is a corrugated board.Perhaps, between double layer of metal plate (1), serve as a contrast a thicker ply of paper (4), as shown in Figure 3, also can reach effect same.Among Fig. 3, ply of paper (4) is a triple wall board, and it is lining between two metallic plates (1), and two metallic plates (1) glued joint with poly (methyl methacrylate) plate (2) respectively again, with example 1.

The utility model had both had wooden blackboard non-corrosive, on-deformable characteristics, simultaneously have again metallic blackboard and can hang magnetic wall chart and the stronger advantage of magnetic force, especially effectively solved the Three Difficult Issues of metallic blackboard " get rusty, depainting, perforation ", can to reach its service life more than 8 years be the desirable regeneration product of metallic blackboard.

Claims

1, a kind of Magnetic-inductive blackboard is characterized in that this blackboard forms by being provided with metallic plate (1) between the two-layer poly (methyl methacrylate) plate (2) (or other high-strength plastic flitch), and the outer surface of poly (methyl methacrylate) plate (2) is coated with the blackboard enamelled coating (3) that is added with an amount of iron content pigment.

2, Magnetic-inductive blackboard according to claim 1 is characterized in that respectively being lined with one deck ply of paper (4) between metallic plate (1) and two-layer poly (methyl methacrylate) plate (2).

3, Magnetic-inductive blackboard according to claim 1 is characterized in that serving as a contrast a thicker ply of paper (4) between double layer of metal plate (1), and metallic plate (1) is bonding with poly (methyl methacrylate) plate (2) respectively again.