CN2372753Y

CN2372753Y - Teaching writing blackboard

Info

Publication number: CN2372753Y
Application number: CN 99200897
Authority: CN
Inventors: 孙承芝
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-26
Filing date: 1999-01-26
Publication date: 2000-04-05
Anticipated expiration: 2009-01-26

Abstract

The utility model relates to a magnetic writing and displaying board, particularly a writing board used for teaching, which is mainly composed of a board core, reticulate plastic products, an electromotor, a board wiper strip, a magnetic pen, a whole frame mount, etc., the whole frame mount is inlaid at the periphery of the board core, and the electromotor, a bidirectional switch and a bracing wire are arranged at one end of the whole frame mount approaching to the 1/3 position of a lower frame. The whole frame mount is provided with the board wiper strip, the board wiper strip can move right and left by lightly pressing a switch in use, and thus, characters and patterns formed by the magnetic force of the magnetic pen on the board core can be erased. Purposemade mother liquor is arranged in the board core, because of magnetic powder in the mother liquor, the patterns and the characters formed by the magnetic powder are continuous, clear and difficult deformation. The utility model has the advantages of no pollution, convenient operation, and repeatable use. A stainless steel outer shell is coated at the outside of the whole frame mount, the utility model has the advantages of beautiful appearance and high durability.

Description

Protecting teaching writing board

The utility model relates to a kind of magnetic writing display board, but especially a kind of protecting teaching writing board of Palingraphia.

Mostly the blackboard for education that generally uses in the at present domestic and international school is wooden blackboard, Glass blackboard, cement blackboard, all adopts chalk to write, and powder flies upward in the use, contaminated environment, and the back is pathogenic easily in people's suction body, health risk.Though the blank of Chu Xianing is easy to use, pollution-free in recent years, costs an arm and a leg, the liquid of the water-color paintbrush that matches is write not smooth because of easy volatilization causes.

The purpose of this utility model is to provide a kind of the teaching to go up special-purpose clipboard, and it has overcome the deficiency of existing teaching with blackboard, and pollution-free, easy to install, cost is low.It is the revolution of teaching writing apparatus.

The purpose of this utility model is achieved in that it is made of plate core, netted goods, motor, blackboard eraser bar, magnetic pen, the general frame etc. moulded, described plate core periphery studs with general frame, the two ends up and down of general frame are provided with groove, one end of general frame is equipped with motor, two-way switch and backguy at distance lower frame 1/3 place, the blackboard eraser bar is housed on the general frame, and blackboard eraser bar lower end is provided with the little handle with blackboard eraser bar one.The two ends of blackboard eraser bar are provided with and the general frame dop that is inlaid with ball that is complementary of two ends groove up and down; Described plate core is that its two sides forms with transparent white hard plastic board sealing after the netted system of moulding is put into mother liquor in the body, and mother liquor is to be that 10-20 micron, content are the magnetic of/1000 milliliters of 1800 grams and painted the carrier of making in 5: 1 ratios by machine oil and white and be to be mixed and form by granularity; Described magnetic pen is to be that the cylinder of 2mm is made pen core and made with the diameter that magnet processes.General frame is surrounded by stainless steel casing outward.

Because the utility model has adopted said structure, and the special mother liquor of in the grid of plate core, having packed into, make magnetic forms when writing figure or literal continuous, clear, stroke near and influence each other little when intersecting and can stably remain on the plate face, easy to use, nontoxic, pollution-free, can use repeatedly.

Below in conjunction with drawings and Examples the utility model is described further:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a magnetic pen structural representation of the present utility model;

Fig. 3 is a plate core cut-away view of the present utility model.

Plate core 1 periphery studs with general frame 6 among the figure, 3 meters of general frame 6 length, wide 1 meter, thick 0.04 meter, on it, following two ends do not have groove 7, the one end is equipped with motor 8 at distance lower frame 1/3 place, control two-way switch 9, backguy 10, blackboard eraser bar 3 is wide 0.1 meter, it is the platypelloid type bar shape of making by permanent magnet, there is the wisp hand 11 of one with it its lower end, the blackboard eraser bar about in the of 3 two ends be provided with general frame 6 on, the dop 12 that following two ends groove 7 is complementary, blackboard eraser bar 3 is installed in the back side of clipboard, by backguy 10 pullings, two-way switch 9 can change direction of current, makes motor 8 drive blackboard eraser bar 3 move left and right, motor 8 12V voltage joins by a special-purpose power transformation device and civil power.All inlay ball on the dop 12 at blackboard eraser bar 3 two ends to reduce friction, the groove 7 that general frame 6, upper and lower end are provided with can make blackboard eraser bar 3 move steady, spry and lightly.Touch during power failure with the wisp hand 11 of blackboard eraser bar 3 one can move left and right blackboard eraser bar 3, magnetic pen 4 is to be that the magnet of 2mm is made pen core and made by diameter, can make the magnetic " gathering " of clipboard plate in-core when writing because of magnetic pen core 5 magneticactions in the magnetic pen 4, produce black band trace, i.e. the formed word of magnetic pen movement locus, picture etc.Because used granularity of magnet powder is at the 10-20 micron in the special mother liquor that the utility model plate core 1 is adorned, and content is/1000 milliliters of 1800 grams, on clipboard, form stable so magnetic pen 4 is write the back, distinct literal or figure, after removing, magnetic force can not disappear yet, distortion, and the magnetic carrier is by high-purity machine oil and the ratio preparation of white paint in 5: 1, its mother liquor that evenly is mixed injects in netted each grid of moulding goods, the two sides is bonding with transparent wear-resisting white hard plastic board then, and periphery shut, be adsorbed on equably on the transparent white hard plastic board under the magneticaction of the magnetic pen core 5 in magnetic pen 4 when the mother liquor integrally closed is used in grid in the mother liquor, clearly demonstrate written contents, behind the two-way switch 9 of pressing motor 8, blackboard eraser bar 3 can pull to the other end at the clipboard back side from an end under the effect of backguy 10, in blackboard eraser bar 3 moving process, magnetic stripe on it is inhaled the magnetic that is adsorbed on the clipboard outside surface again attached to surface in the clipboard, thereby the word on the clipboard is disappeared.At stainless ladle one shell of general frame 6 external applications of clipboard, can make it attractive in appearance, durable.

Claims

1. protecting teaching writing board, constitute by plate core, netted goods, motor, blackboard eraser bar, magnetic pen, the general frame etc. moulded, it is characterized in that: described plate core periphery studs with general frame, the upper/lower terminal of general frame is provided with groove, one end of general frame is equipped with motor, two-way switch and backguy at distance lower frame 1/3 place, the blackboard eraser bar is housed on the general frame, blackboard eraser bar lower end is provided with the little handle with blackboard eraser bar one, and the two ends of blackboard eraser bar are provided with the dop that is inlaid with ball that is complementary with general frame upper/lower terminal groove.

2. a kind of protecting teaching writing board according to claim 1, it is characterized in that: described plate core is that its two sides is sealed with transparent white hard plastic board and formed after the netted system of moulding is put into mother liquor in the body, mother liquor is to be the 10-20 micron by granularity, and content is that the magnetic of/1000 milliliters of 1800 grams evenly is mixed with the carrier of being made in 5: 1 ratios by machine oil and white paint and forms.

3. a kind of protecting teaching writing board according to claim 1 is characterized in that: described magnetic pen is to be that the cylinder of 2mm is made pen core and made with the diameter that magnet processes.

4. a kind of protecting teaching writing board according to claim 1 is characterized in that: general frame is surrounded by stainless steel casing outward.