CN101564957A

CN101564957A - Magnetic cylinder type liquid concealed lattice writing board

Info

Publication number: CN101564957A
Application number: CNA2008100442815A
Authority: CN
Inventors: 严静
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-25
Filing date: 2008-04-25
Publication date: 2009-10-28

Abstract

The invention provides a novel magnetic blackboard, in particular to a magnetic cylinder type liquid concealed lattice writing board belonging to the technical field of the magnetic force type writing blackboard design of a blackboard for teaching and aiming to overcome the defect of incoherent showing, poor concealing effect and different depths of background colors. As shown in an attached drawing, the magnetic cylinder type liquid concealed lattice writing board mainly comprises a transparent panel (1), a nontransparent color liquid (2), a thin magnetic cylinder (3) and a grid rack (4), wherein the thin magnetic cylinder (3) is driven to move front and back by the magnetic field acting force of a magnetic pen and a magnetic brush which move on the surface of the magnetic cylinder type liquid concealed lattice writing board to be exposed outside the nontransparent color liquid (2) and submerged into the nontransparent color liquid (2) so as to achieve the purpose of showing and erasure. In addition, the magnetic cylinder type liquid concealed lattice writing board is mainly used for replacing a chalk blackboard in a school classroom to achieve the purpose of chalk dust elimination and material consumption reduction.

Description

Magnetic cylinder type liquid concealed lattice writing board

Technical field

The invention belongs to the magnetic-type blackboard design field in the teaching equipment.

Background technology

Blackboard is a crucial teaching equipment in the teachers' instruction process, traditional blackboard adopts gypsum chalk to write, have serious dust pollution question, so people are in the technological improvement way of research blackboard for education all the time, the magnetic-type blackboard is exactly wherein a kind of.The said magnetic-type blackboard of this specification is meant and utilizes the magnetic field action principle, adopts magnetic pen to write, and the thin magnetizing mediums that magnetic pen is inhaled moving clipboard back carries out the blackboard that is mainly used in teaching that track shows.Because the thin magnetizing mediums of this class blackboard is all arranged with dot matrix way, and the not necessarily traditional black of its background colour, so hereinafter this magnetic-type blackboard is renamed as the magnetic-type lattice writing board.

China is since the eighties in 19th century, many patents of invention about the magnetic-type lattice writing board are arranged successively, utilize the mode difference of thin magnetizing mediums can be subdivided into magnetic formula (comprising magnetic liquid formula) according to it, three kinds of magnetic bead type and magnetic column types, their common structure characteristics are dot matrix spaces that fine and closely woven distribution is arranged behind the display floater, wherein, the characteristics of magnetic formula lattice writing board are to put into the band look magnetic that can move forward and backward in the dot matrix space, the magnetic reach that utilizes magnetic pen to inhale before display floater to draw in the space reaches the demonstration purpose, utilizes magnetic brush to inhale behind board to move to reach behind the magnetic that draws in the space to wipe purpose.The characteristics of magnetic bead type lattice writing board are to put into rotating double-colored magnetic bead in the dot matrix space, utilize the heteropole attraction of magnetic pen to make certain look of double-colored magnetic bead forward-facing reach the demonstration purpose, utilize the homopolarity repulsive force of the magnetic brush opposite to make double-colored magnetic bead upset, another look is forward-facing reached wipe purpose with the magnetic pen magnetic pole.The characteristics of magnetic column type lattice writing board are to put into the magnetic post that the front end that can move forward and backward is worn look in the dot matrix space, utilize the heteropole attraction of magnetic pen to make the magnetic post reach the demonstration purpose, utilize the homopolarity repulsive force of the magnetic brush opposite to make the magnetic post wipe purpose to moving to reach away from the display floater direction with the magnetic pen magnetic pole to moving near the display floater direction.

The weakness of magnetic formula lattice writing board is to wipe the front, can not selective erase, differ far away with the use habit and the ease of use of existing blackboard, and inconvenience is promoted in the blackboard for education field.The weakness of magnetic bead type lattice writing board is that the look face of magnetic bead is towards location difficulty, the actual display effect of using is undesirable, number of patent application is that the patent of invention of 200410075289.X has solved the magnetic bead look face of magnetic bead type lattice writing board preferably towards orientation problem, but its structure is too complicated, and production technology is difficult to realize.The magnetic column type lattice writing board is simple in structure, use habit is identical with existing blackboard for education with convenience, development prospect is preferably arranged, but there is following defective in existing magnetic column type lattice writing board: 1, the magnetic post will move in the hole, need certain clearance between magnetic post and the hole wall, and need certain thickness because of the structural strength reason between hole wall and the hole wall, therefore the ratio of the demonstration face area of magnetic post and blackboard area is too little, the word that causes showing is made up of the point that spacing is very big one by one, though can distinguish dimly, but intermittent, poor effect; 2, do not show on the blackboard that word returns to the aperture depths by the magnetic post and realizes, if it is not enough to return the degree of depth, then concealment effect is bad, otherwise then requires too high to magnetic field intensity; Background colour when 3, blackboard does not show word is that the cryptic colouring at the hole depth place constitutes by hole wall end face color and magnetic post, makes the blackboard background colour deep mixed, and tangible grid phenomenon is arranged.

Summary of the invention

Show discontinuous, blanking weak effect, the deep mixed defective of background colour in order to overcome existing magnetic column type lattice writing board, the invention provides a kind of magnetic cylinder type liquid concealed lattice writing board, its structure as shown in Figure 1, this board mainly is made up of transparent panel [1], nontransparent look liquid [2], thin magnetic post [3], grid [4].Transparent panel is hard transparent materials such as glass, front surface is literal for writing, the rear surface periphery closely contacts with the projecting edge of grid, but the middle confined space that forms a receiving fluids, grid is for nonmetallic materials such as moulding firmly, the inboard column aperture that gathers, it is neatly evenly distributed that aperture is pressed ranks, thin magnetic post is a magnetic material, one big, one little, the pole orientation of all thin magnetic posts identical (afterwards chatting with major part is that the arctic is example), pillar partly inserts in the column aperture of grid, and huge pillar part front end face coats that (afterwards chatting with nontransparent look liquid is black with the very big color of nontransparent look liquid aberration, thin magnetic styletable face is that white is example), and when non-show state and between the transparent panel rear surface, keep certain clearance, be full of nontransparent look liquid in the confined space.

The same state that is perpendicular to ground with blackboard on hanging on the classroom wall of this board uses, when initial, thin magnetic post Hide All is in the black liquor back, what see from transparent panel is black liquor entirely, make the transparent panel surface demonstrate unified uniform black, be similar to the blackboard of using in the classroom that does not also write, when the magnetic pen that with nib is the South Pole is write on transparent panel, the thin magnetic post of place that the magnetic pen nib slips over and transparent panel back produces the magnetic attraction effect, the thin magnetic post at the magnetic pen nib place of slipping over is drawn forward on the rear surface that is attached to transparent panel, make the magnetic pen nib place of slipping over demonstrate white point group, thereby reach on black plate face and write the effect that demonstrates white writing, during the white writing that on will wiping black plate face, shows, the magnetic brush that with the wiping end face is the arctic slips on the transparent panel surface, the thin magnetic post of transparent panel back is pushed under the active force that heteropole repels each other gets back to the grid front surface, make between the demonstration end face of transparent panel and thin magnetic post and refill black liquor, make the transparent panel surface be shown as black once more, thereby reach the effect of wiping handwriting.

This board has following beneficial effect: 1, background colour is provided by nontransparent look liquid, makes background colour unified, pure, does not have the grid phenomenon; 2, the demonstration face area of thin magnetic post and the ratio of blackboard area significantly improve, under the situation in the mobile friction gap of not considering thin magnetic intercolumniation, the theoretical ratio of circular demonstration end face is 0.9 (during rounded projections arranged), the theoretical ratio of square demonstration end face is 1, and the continuity that person's handwriting is shown has obtained very big improvement; 3, because the concealment effect of nontransparent look liquid is obvious, make the hiding spacing between thin magnetic post and transparent panel rear surface very little, have 3 millimeter to get final product, therefore the magnetism intensity to magnetic pen and magnetic brush requires to descend, and helps reducing the production cost of auxiliary products magnetic pen and magnetic brush; 4, nontransparent look liquid also can play lubricated and buffering effect when working the effect of hiding, and makes thin magnetic post can keep for a long time moving flexibly, reduces wear, and reduces noise; 5, the background colour of board and foreground flexible configuration as required helps the board of production multicolour collocation style; 6, because background colour is unified, pure, handle under the proper situation, can be used for writing of water-color paintbrush or chalk at the transparent panel front surface.

Description of drawings

Fig. 1 is the structural representation of this board

Fig. 2 is circular thin magnetic post schematic diagram

Fig. 3 inserts in schematic diagram in the grid for circular thin magnetic post by rectangular arranged

Fig. 4 inserts in schematic diagram in the grid for circular thin magnetic post by rounded projections arranged

Fig. 5 is square thin magnetic post schematic diagram

Fig. 6 inserts in schematic diagram in the grid for square thin magnetic post by rectangular arranged

The specific embodiment

Below in conjunction with accompanying drawing two specific embodiments of the present invention are described.

Embodiment 1: board is made up of transparent panel [1], nontransparent look liquid [2], circular thin magnetic post [3], grid [4], as shown in Figure 1.Transparent panel [1] is a glass, also can be other hard transparent material, about 5 millimeters of thickness.Nontransparent look liquid [2] is black non transparent liquid, also can be the opaque liquid of other band look such as milky, blueness, green.Circular thin magnetic post [3] is whole permanent-magnet material, the pole orientation unanimity, as shown in Figure 2, also can be that major part is a permanent-magnet material, the microcephaly be other versions such as non magnetic hard material, about 4 millimeters of thin magnetic post major part thickness, about 2.5 millimeters of diameter, about 15 millimeters of microcephaly's length, about 0.9 millimeter of diameter, big end surface is coated with adularescent or other color big with selected opaque liquid colour contrast.Grid [4] is for nonmetallic materials such as moulding firmly, protruding all around, the middle cavity that forms, about 7 millimeters of the degree of depth, upper wall is opened the straight-through cavity of a liquid hand-hole outside grid [4], circular aperture as shown in Figure 3 gathers in the cavity bottom, about 15 millimeters of the circular aperture degree of depth, about 1 millimeter of diameter, about 2.5 millimeters of aperture pitch, the cavity bottom circular aperture that also can gather as shown in Figure 4, this distribution mode can increase the display area ratio.Inwardly all insert the thin magnetic post of circle [3] microcephaly in each aperture of grid [4] cavity bottom, transparent panel [1] is closely covered on the front end face of grid [4], inject nontransparent look liquid [2] by the liquid hand-hole on the grid [4], the nontransparent look liquid [2] of 7 millimeters thick is housed in the confined space of the board that assembles behind transparent panel [1], when the thin magnetic post of circle [3] is close to the cavity bottom of grid [4], the magnetic post is tinted and is separated with 3 millimeters nontransparent look liquid [2] between end face and transparent panel [1] rear surface, reach not display effect, when with the opposite magnetic pen of magnetic pole from transparent panel []] when front surface slips over, magnetic pen attracts thin magnetic post to move forward 3 millimeters, the end face of tinting is close on the transparent panel [1], reach display effect, when with the identical magnetic brush of magnetic pole from transparent panel [1] when front surface slips over, magnetic brush is scolded and is pushed away thin magnetic post and move 3 millimeters backward, making tints is separated with 3 millimeters nontransparent look liquid [2] again between end face and transparent panel [1] rear surface, reaches and wipes effect.

Embodiment 2: this embodiment changes the shape of thin magnetic post [3] and the shape of grid [4] cavity bottom aperture on the basis of embodiment 1, thin magnetic post [3] is changed into square, the major part square length of side is 2.5 millimeters, microcephaly's square length of side is 0.9 millimeter, and other size is identical with embodiment 1.Grid [4] cavity bottom aperture is also changed into square, and the length of side is 1 millimeter, and other size is identical with embodiment 1.The installation step of this embodiment, using method and action principle are all identical with embodiment 1, this embodiment can further increase the display area ratio, make the ratio that shows face area and blackboard area approach 1, thereby make the writing continuity of writing out reach very good state.

Except that above-mentioned two embodiment, the present invention does not get rid of the embodiment of other trickle optimization in addition, as when thin magnetic post [3] is moved forward and backward in the aperture of grid [4] cavity bottom, liquid in the aperture can smooth and easyly flow, thereby reduce the moving resistance of thin magnetic post [3], the bottom of all apertures can be communicated with, form unimpeded current by pass.

Claims

1, a kind of magnetic cylinder type liquid concealed lattice writing board, mainly by transparent panel [1], nontransparent look liquid [2], thin magnetic post [3], grid [4] is formed, it drives thin magnetic post [3] by the magnetic field active force at surperficial magnetic pen that moves of board and magnetic brush and moves forward and backward, make thin magnetic post [3] emergence outside nontransparent look liquid [2] and bury in nontransparent look liquid [2], thereby realize showing and wiping purpose, it is characterized in that between transparent panel [1] and grid [4] cavity being arranged, filled nontransparent look liquid [2] in the cavity, [3] one on thin magnetic post is big, one little, the pole orientation unanimity, the microcephaly inserts in the aperture of grid [4], major part is immersed in the nontransparent look liquid [2], the end face of major part scribbles and the great color of nontransparent look liquid [2] aberration, as showing end face, show that end face has certain clearance when non-show state and between transparent panel [1].

2, transparent panel according to claim 1 [1] is hard transparent materials such as glass.

3, nontransparent look liquid according to claim 1 [2] is colors such as black, milky, blueness, green.

4, thin magnetic post according to claim 1 [3] has circular and square two kinds of shapes, and it is that permanent-magnet material and part are two kinds of frame modes of permanent-magnet material that integral body is arranged.

5, grid according to claim 1 [4], its cavity bottom aperture has arrangement modes such as square arrangement and rounded projections arranged.