CN2254832Y - Magnetic, no-chalk type black-board for teaching in class - Google Patents

Abstract

The utility model relates to a teaching aid, particularly a magnetic blackboard without dust for teaching in class. The utility model is composed of a blackboard body (1), a wooden frame (2), a word erasing bar (3), a point erasing word block (4), a point erasing word control block (5), a magnetic pen (6), etc. The utilility model is used to replace chalk in school, so the usual expenditure and waste of the blackboard eraser is avoided. The utility model is made of plastic, so the utility model can not be easily damaged. The utility model has the advantages of clear handwriting, simple structure, convenient words erasing, etc.

Description

Magnetic is exempted from chalk classroom instruction blackboard

The utility model relates to a kind of teaching aid, and particularly a kind of magnetic is exempted from chalk classroom instruction blackboard.

At present, employed blackboard majority is glass or wooden in school instruction, its shortcoming is the word that writes with chalk, chalk dust under wiping has caused very big pollution to environment, exert a certain influence for the health of Faculty and Students, nowadays children's magnetic wordpad has appearred on the market, learn to write for children and students in middle and primary schools and brought very big convenience, but this board also has a lot of weak points, it can only carry out large tracts of land and wipe word, carry out wiping of part, individual character and even point and can not follow one's bent, be not suitable in teaching, using.

The purpose of this utility model is that word, blackboard for education simple in structure are wiped in the part of can carrying out that will provide a kind of magnetic to exempt from chalk.

The purpose of this utility model is to realize like this, this blackboard for education is wiped critical pieces such as block, some wiping word controll block, magnetic pen and is formed by blackboard main body, wooden frame, wiping brief note, point, its blackboard main body is made by two-layer clear, colorless rigid plastics up and down, wherein the one side of lower floor has honeycomb plastics space, be full of milky low viscosity aniline chemical agent liquid and a small amount of black soft magnetic powder in the space, material is clipped together in lamina membranacea and the space up and down, and the blackboard main body is fixed in the wooden frame; Following wooden frame front end band is put the groove of magnetic pen, the rear end has a groove, the wiping brief note sets within it, wipe brief note and be designed to rectangle, three is aluminum alloy framework, the centre accompanies one section strength magnetic glue bar, it is square that point is wiped block, it is by a powerful permanent piece, three balls and a sheet metal are formed, and are equivalent to ball diameter about 2/3rds in three degree of depth of brill on the permanent magnets, and diameter equals the circular hole of ball diameter, ball is put into the hole, fill up with the sticking oil of Huang, again by the relevant position with the sheet metal of wiping the same size of block on bore the open-work that three diameters are equivalent to ball diameter about 2/3rds, be fixed on to wipe on the block and push down ball, point wipes word controll block and some wiping block structure is identical, be employed material be soft magnetic material, point is wiped block and point and is wiped word controll block and be bonded on the blackboard main body by magnetic accordingly respectively, some wiping word controll block is in the front of blackboard main body, when wiping word controll block with the hand transfer point, some wiping block and then moves by magnetic wipes word; Magnetic pen is one section garden bar permanent magnet.

The utility model is owing to adopted more traditional wooden, the cement of above-mentioned structure, glass, blackboard that following remarkable advantage is arranged;

One,, so eliminated dust, saved the chalk of school, spending that blackboard eraser etc. are regular and waste without chalk.

Two, blackboard adopts plastics manufacturing, not cracky.

Three, blackboard adopts white background color, and blackness handwriting is distincter, also more clear than wrongly written or mispronounced character contrast of the green end of Glass blackboard, and white background color can absorb seven-colour-light, it is reflective to be difficult for, and background color is in interlayer, and is will never fade.

Four, blackboard adopts to link work at selected spots with that in entire areas and wipes the word method, large tracts of land is wiped save time, laborsaving, save instructional blocks of time.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof:

Fig. 1, exempt from chalk classroom instruction blackboard perspective view for magnetic;

Fig. 2, wipe a block structural representation for point.

Describe concrete structure of the present utility model and operating position in detail below in conjunction with accompanying drawing; This blackboard for education is wiped critical pieces such as block 4, some wiping word controll block 5, magnetic pen 6 and is formed by blackboard main body 1, wooden frame 2, wiping brief note 3, point, its blackboard main body 1 is made by two-layer clear, colorless rigid plastics up and down, wherein the one side 7 of lower floor has honeycomb plastics space, be full of milky low viscosity aniline chemical agent liquid and a small amount of black soft magnetic powder in the space, material is clipped together in lamina membranacea and the space up and down, and blackboard main body 1 is fixed in the wooden frame 2; Following wooden frame front end band is put the groove 8 of magnetic pen, the rear end has a groove 9, wiping brief note 3 sets within it, wipe brief note 3 and be designed to rectangle, three is aluminum alloy framework 10, the centre accompanies one section strength magnetic glue bar 11, it is square that point is wiped block 4, it is by a powerful permanent piece 12, three balls 13 and a sheet metal 14 are formed, be equivalent to ball diameter about 2/3rds in three degree of depth of brill on the permanent magnets 12, diameter equals the circular hole of ball diameter, ball is put into the hole, fill up with the sticking oil of Huang, again by the relevant position with the sheet metal 14 of wiping block 4 same sizes on three diameters of brill be equivalent to the open-work of ball diameter about 2/3rds, be fixed on to wipe on the block 4 and push down ball 13, point wipes word controll block 5 and some wiping block 4 structures are identical, be employed material be soft magnetic material, point wipes block 4 and some wiping word controll block 5 is sticking by on the blackboard main body by magnetic accordingly respectively, point is wiped word controll block 5 fronts in blackboard main body 1, when wiping word controll block 5 with the hand transfer point, some wiping block 4 and then moves by magnetic wipes word; Magnetic pen 6 is one section garden bar permanent magnet.

Operating position: write on blackboard main body 1 with magnetic pen 6, when revising as need are local, removable point is wiped word controll block 5 to need modification place, wipes will wipe block behind the word and retract nearby and get final product bottom the blackboard; As the need large tracts of land wipe word then movable surface wipe brief note 3 to the relevant position, should retract blackboard one side with visiting brief note after wiping word.

Claims (2)

1, a kind of magnetic is exempted from chalk classroom instruction blackboard, and this blackboard for education is made up of blackboard main body (1), wooden frame (2), wiping brief note (3), some wiping block (4), some wiping word controll block (5) magnetic pen critical pieces such as (6), it is characterized in that:

A, blackboard main body (1) are made by two-layer clear, colorless rigid plastics up and down, wherein the one side of lower floor (7) has honeycomb plastics space, be full of milky low viscosity aniline chemical agent liquid and a small amount of black soft magnetic powder in the space, material is clipped together in lamina membranacea and the space up and down, and blackboard main body (1) is fixed in the wooden frame (2); Following wooden frame front end band is put the groove (8) of magnetic pen (6), and the rear end has a groove (9), wipes brief note (3) and sets within it;

B, wiping brief note are designed to rectangle, and three is aluminum alloy framework, and the centre accompanies one section strength magnetic glue bar,

It is square that c, point are wiped block (4), it is by a powerful permanent piece (12), three balls (13) and a sheet metal (14) are formed, point wipes word controll block (5) and some wiping block (4) structure is identical, be employed material be soft magnetic material, point wipes block (4) and point is wiped corresponding respectively being bonded on the blackboard main body (1) by magnetic of word controll block (5), and point is wiped word controll block (5) in the front of blackboard main body (1), and magnetic pen (6) is one section garden bar shaped permanent magnets.

2, magnetic according to claim 1 is exempted from chalk classroom instruction blackboard, it is characterized in that: the permanent magnets (12) on the some wiping block goes up three degree of depth of brill and is equivalent to ball diameter about 2/3rds, diameter equals the circular hole of ball diameter, ball (13) is put into the hole, fill up with the sticking oil of Huang, bore the open-work that three diameters are equivalent to ball diameter about 2/3rds by the relevant position going up again, be fixed on to wipe on the block (4) and push down ball (13) with a sheet metal (14) of wiping the same size of block (4).

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