CN2488701Y - Dustless blackboard - Google Patents

Abstract

The utility model relates to a dust free magnetic blackboard. The utility model comprises a panel and a frame; the panel is distributed with grids; each grid is provided with a magnetic body; the half transparent thin plate seals the grid surface layer; the grid is filled with liquid with a different color from the color of the panel of the magnetic body. The dust free magnetic blackboard of the utility model which is made of the magnetic principle is a simple blackboard structure which has a low cost and is convenient to be made; therefore the utility model is in particular practical. The utility model not only can solve the dust pollution caused by the chalk and protect the health of the teacher and student, but also can leave out the making and consumption of the chalk; and the utility model also can solve the disadvantage that the chalk letter on the blackboard is not easy to be erased.

Description

Dust-free blackboard

The utility model relates to a kind of blackboard, specifically a kind of dustless magnet board.

The dust pollution of blackboard is a problem that exists in the teaching field for many years, though people have found out various blackboard structures and solution, eventually crossing high various reasons because of these design complex structures or cost does not have to access actual application.

The purpose of this utility model just provide a kind of simple in structure, easily manufactured, be suitable for practical dust-free blackboard, to solve dust to the healthy infringement that is caused of numerous teachers and students.

The utility model is achieved in that dust-free blackboard still is made up of panel and frame, on panel, be evenly equipped with grid, one magnetic is housed in each grid, and translucent thin plate sealing hides in the grid surface layer, is full of color and the big liquid of magnetic surface layer colour contrast in grid.Utilize a special magnetic pen on this dust-free blackboard, to write, then because the different in nature suction of magnetic, magnetic in the grid that magnetic pen is streaked is adsorbed on the translucent thin plate, magnetic in other grids then still remains on the position of back, like this on the translucent thin plate of dust-free blackboard, just demonstrate by the formed plate face of grid liquid, and the writing of the big contrast color that on this plate face, rearranges by the magnetic surface layer that respectively adsorbs.The blackboard eraser sassafras that utilizes the magnetic material identical with magnetic surface layer polarity to make is wiped away blackboard, the magnetic that adsorbs can be pushed up go back to grid inside, makes liquid hide the grid surface layer again, reaches the purpose of eliminating plate face writing thus.

The utility model utilizes the basic suction of magnetic to scold principle to make the dustless magnet board of adorning magnetic and high contrast color liquid in the grid, is a kind of low cost, the easy succinct blackboard structure of making, thereby is particularly suitable for practicality.Use this dust-free blackboard, both can solve and use the dust pollution that chalk caused, the protection teachers and students are healthy; Can save the manufacturing and the consumption of chalk again; Can also solve the shortcoming of chalk writing wiping inconvenience on the blackboard.Owing to there are not magnetic surface layer wearing and tearing, after resolving the problem that liquid fades, just can make writing shown on this dust-free blackboard in use for a long time, all can keep very high clear wash rice degree.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is an outward appearance front view of the present utility model.

Fig. 2 is a side sectional view of the present utility model.

Fig. 3 is several implementation schematic diagrames of grid and interior dress magnetic.

As shown in Figure 2, this dust-free blackboard is evenly to be provided with grid 6 on panel 8, and a magnetic 7 is housed in each grid, the equal painted white of the surface layer of magnetic 7, and magnetic unanimity.Translucent thin plate 3 sealings hide in the grid surface layer.In grid 6, be full of black liquor.So just can form the form of blackboard wrongly written or mispronounced character.Also can in grid, be full of white or milky white liquid, the surface layer of magnetic 7 be painted bright-coloured color or black such as blue look, green, thereby form the form of color word of blank or blank surplus.

Grid 6 is fine and closely woven more, and then the emulation of shown writing is good more.In addition as shown in Figure 3, Figure 4, grid 6 can be a kind of in square, triangle, circle or the honeycombed, and what the surface layer of magnetic 7 then can be in circular, triangle or the square is a kind of.In a word magnetic and cooperating of grid be magnetic can freely be advanced and retreat in grid in, increase the area of magnetic surface layer as far as possible, make the stroke that manifests continuous as far as possible, regular.

As shown in Figure 1, 2, a magnetic push-pull bar 1 is arranged on blackboard, the upper and lower side of pull bar 1 snaps in the slideway 4 on the blackboard upper and lower side frame 5.The magnetic of this magnetic push-pull bar inboard (i.e. the one side of translucent relatively thin plate 3) is identical with the magnetic of magnetic 7 surface layers in the grid, like this with pull bar 1 from an end push-and-pull of blackboard in the other end, writing on the whole blackboard " wiping " can be fallen, realize the purpose of quick clear board face writing thus.Among the figure, handle 2 is housed also on pull bar 1, makes the push-and-pull operation of pull bar more convenient.

Claims (4)

1, a kind of dust-free blackboard, form by panel and frame, it is characterized in that being evenly equipped with on the panel grid (6), a magnetic (7) is housed in each grid, translucent thin plate (3) sealing hides in the grid surface layer, is full of color and the big liquid of magnetic surface layer colour contrast in grid (6).

2, dust-free blackboard according to claim 1 is characterized in that a kind of in square, triangle, circle or the honeycombed of grid (6), and the surface layer of magnetic (7) is a kind of in circle, triangle or the square.

3, dust-free blackboard according to claim 1 is characterized in that having a magnetic push-pull bar (1) on blackboard, the upper and lower side of pull bar (1) snaps in the slideway (4) on the blackboard upper and lower side frame (5).

4, dust-free blackboard according to claim 3 is characterized in that being equipped with handle (2) on pull bar (1).

Images