CN2151865Y - Easy writing easy erasing magnetic stick writing board - Google Patents

Abstract

The utility model relates to a magnetic stick type writing board which is easy to write and erase and belongs to the teaching appliance. The utility model has the technical proposal that a plurality of small holes 2 which are vertical to a board surface are uniformly and regularly arranged on a bottom board 1; a small magnetic stick 4 for displaying writings is respectively arranged in each small hole and all small magnetic sticks have consistent N pole direction; the outer part of the bottom board 1 is covered by a piece of transparent plane board surface 3. The writing board utilizes the contrast of the different colors of the end surfaces of the small magnetic sticks and the bottom board to display the writings and needs a magnetic pen and a magnetic eraser to write and erase words when being used. When being used, the writing board is easy to write and erase, can erase local words without dust, and is suitable for teaching.

Description

Easy writing easy erasing magnetic stick writing board

The utility model belongs to teaching aid, is used for the school classroom teaching.

The magnetic wordpad of using is the less iron powder type board of area that children use at present, the plate face of this board is a transparent sheet plastic, base plate is the white plastic plate in even many slits that distributing regularly above, and it is used for showing that the material of writing is the iron powder of black.Write or draw on the plate face (hereinafter to be referred as writing) with a magnetic pen, the iron powder of black will come from the front that base plate is gone to by the slit in the back side of board base plate, with the base plate formation contrast of white, thereby demonstrates writing.The wiping word means of this iron powder type board are by a magnetic stripe that is contained in the base plate back side, along about (or about) two chutes in both sides carry out parallel sliding, the iron powder of demonstration writing is drawn onto the back side realizes wiping word from the base plate front.So can not realize the local word of wiping when this board has been wrongly write word, wipe wrongly written character and must all and then wipe a lot of words on the plate face, and this board can not do very greatly, otherwise cause difficulty will for the wiping word.In addition, the plate face of this board is to manufacture with a thin transparent plastic sheet, and is not wear-resisting, so the service life of this board is shorter.

The purpose of this utility model will provide a kind of easily writing easily to wipe word exactly, can realize the local word of wiping, and can do very greatly, is suitable for vast school instruction, and very long magnetic column type board of life-span.

Shown in Figure 1 as accompanying drawing is a kind of structural representation of the present utility model.Among Fig. 1: 1-base plate, 2-small holes, 3-plate face, 4-small magnetic rod.Its structure is such: many small holes 2 perpendicular to the plate face are regularly evenly distributing on base plate 1, in each small holes, respectively be placed with a small magnetic rod 4 that is used for showing writing, a transparent surface plate face 3 is stamped in the outside of base plate 1, to guarantee that small magnetic rod 4 can not drop out from small holes 2, with base plate 1, plate face 3 and small magnetic rod 4 are grouped together as mentioned above, have just constituted the magnetic column type board, this board is fixed on the wall vertically, with regard to available it write.

Aforesaid base plate 1 is made of plastics, and plate face 3 is made by transparent plastic sheet, transparent plexiglass plate or transparent inorganic glass plate.

Accompanying drawing is shown in Figure 2 to be the planform schematic diagram that small magnetic rod, magnetic pen and magnetic are wiped.Among Fig. 2: the 4-small magnetic rod, the 5-magnetic pen, 6-magnetic is wiped.Small magnetic rod 4 is exactly to put into the small magnetic rod 4 that small holes 2 is used for showing writing among Fig. 1.Small magnetic rod 4, magnetic pen 5 and magnetic are wiped 6 and are made by permanent magnet, and their end is the N utmost point, and the other end is the S utmost point.The both ends of the surface of small magnetic rod 4 and magnetic wiping 6 are planes parallel to each other, and the both ends of the surface of magnetic pen are circular curved surfaces.

Put into the small magnetic rod 4 of small holes 2 on the base plate 1, its discharging is clocklike.Promptly the direction of the N utmost point of all small magnetic rods (or S utmost point) must be consistent, or directed outward (promptly pointing to the person of writing) all, or directed inward all.When the N of small magnetic rod utmost point directed outward, write with the S utmost point of magnetic pen, wipe word with the N utmost point that magnetic is wiped, when the N of small magnetic rod utmost point directed inward, write the S utmost point wiping word of wiping with magnetic with the N utmost point of magnetic pen.The heteropole of magnet is inhaled mutually, homopolar-repulsion, operation principle that this board write, wiped word that Here it is.

Owing to adopt the principle of homopolar-repulsion to wipe word, and magnetic wipes and is not mounted on the board, can wipe the wrongly written character of any position on the plate face flexibly and easily so magnetic is wiped, and can not wipe the word that other should not be wiped, and realizes that the local word of wiping revises.Again because when doing this magnetic column type board very big, can not give and wipe word and cause difficulty, so this magnetic column type board can be done very greatly.Because the small magnetic rod of this board adopts permanent magnet to make, and the plate face is made by thicker transparent plastic sheet or transparency glass plate, its smooth surface is wear-resisting, so this board is very long service life again.In a word, easy-to-write and erasable can local be wiped word, can do very greatly, uses hygienic and convenient, and the life-span is long, Here it is remarkable advantage of the present utility model.

Description of drawings: shown in Figure 1 is a kind of structural representation of the present utility model.To cut open one jiao be in order to demonstrate transparent plate face 3, so that explanation to lower right corner base plate among Fig. 1.The distribution pattern that the distribution pattern of aperture 2 is not necessarily actual among Fig. 1 when manufacturing, the size of aperture 2 and size and ratio during with also non-actual the manufacturing of the ratio of base plate, Fig. 1 is a kind of structural representation.Shown in Figure 2 is that small magnetic rod 4, magnetic pen 5 and magnetic are wiped a kind of shape schematic diagram of 6, its size and shape are not necessarily actual when manufacturing size and shape, and Fig. 2 also is the shape schematic diagram of a kind of small magnetic rod, magnetic pen and magnetic wiping.

Shown in Figure 1 as accompanying drawing is a kind of specific embodiment of the present utility model.The utility model is by base plate 1, and formations such as plate face 3 and small magnetic rod 4 also comprise the magnetic pen 5 and the magnetic wiping 6 that are exclusively used in this board in addition.Base plate 1 can be made white (or black, or other monochromatic color color), and the end face of small magnetic rod can be made black (or white, or other monochromatic color color.In a word, make the base plate color obviously different, thereby produce sharp contrast, so that writing seems clear) with the end face color of small magnetic rod.When needs larger area board, several boards can be grouped together side by side, just become a larger area magnetic column type board.Magnetic is wiped can make square column type (also can make garden cylindricality or other shape).

Claims (4)

1, a kind of magnetic column type board of easy-to-write and erasable, belong to teaching aid, it is made of base plate 1, plate face 3 and small magnetic rod 4 etc., it is characterized in that evenly arranging regularly on the base plate many small holes 2 perpendicular to the plate face, in each small holes, respectively be placed with a small magnetic rod 4 that is used for showing writing, the N extreme direction unanimity of all small magnetic rods, the outside of base plate 1 are stamped a transparent surface plate face 3.

2, board according to claim 1 is characterized in that base plate 1 adopts plastics to make.

3, board according to claim 1 is characterized in that plate face 3 adopts transparent plastic sheet, transparent plexiglass plate or transparent inorganic glass plate to make.

4, board according to claim 1 is characterized in that small magnetic rod 4 adopts permanent-magnet material to make.