CN2484186Y

CN2484186Y - Electrostatic-absorbing magnetic writing board for posting

Info

Publication number: CN2484186Y
Application number: CN 01213751
Authority: CN
Inventors: 夏吉安
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-28
Filing date: 2001-03-28
Publication date: 2002-04-03
Anticipated expiration: 2011-03-28

Abstract

The utility model relates to a magnetic pasted writing board with electrostatic absorption and dust absorption, which consists of a writing board, a rear end plate, a frame, an electrostatic generator, a positive electrode, a negative electrode, a power switch and a plug, as well as is characterized in that an electrode plate is provided between the writing board and the rear end plate to fix the positive and the negative electrodes, the writing board is made of iron and tightly adhere to the electrode plate. The utility model combines the advantages of the electrostatic absorption pasted writing board and the magnetic pasted writing board, therefore has the advantages of electrostatic absorption paste, electrostatic dust absorption, magnetic paste, smooth writing on board, easy wiping, convenient use and long service life and is the substitute of the prior electrostatic absorption pasted writing board.

Description

Electrostatic Absorption magnetic posting writing board

The utility model relates to a kind of Electrostatic Absorption, dust suction, magnetic posting writing board.

Existing posting writing board be magnetic posting writing board and electrostatic adsorption posting writing board.The magnetic posting writing board generally is meant metal blackboard or nonmetal suction magnetic blackboard, though its fluent writing, easily wiping is easily smeared, and is not reflective, life-span is long, and is easy to use, and available magnetic nail is puted up, but when writing with chalk, existence easily produces dust from flying, contaminated environment, the shortcoming that impairs one's health.Electrostatic adsorption posting writing board is a kind ofly to adsorb the clipboard of putting up with high-pressure electrostatic, is 99203278.4 static posting writing board as the patent No., and it has puts up without drawing pin, easy to use, and the dust suction effect is arranged, and can reduce the infringement of chalk dust to human body.But inhale the magnetic function owing to lack, in case electrostatic generator breaks down or runs into power failure, clipboard can't be brought into play the effect of absorption, dust suction, use and influence is normal.

The purpose of this utility model is to provide a kind of magnetic that had both had the magnetic posting writing board to put up function, has the Electrostatic Absorption of electrostatic adsorption posting writing board, the Electrostatic Absorption magnetic posting writing board of dust-absorbing function again.

One of technical solution of the present utility model is: a kind of Electrostatic Absorption magnetic posting writing board, be provided with frame, back shroud, on frame, be provided with attaching plug and power switch, be connected with electrostatic generator with power switch, be connected with positive electrode and negative electrode with the electrostatic generator output, its special character is to be provided with the battery lead plate that the back side is used for fixing positive electrode and negative electrode in the place ahead of back shroud, is glued with irony in the front of battery lead plate and writes panel.

Two of technical solution of the present utility model is: a kind of Electrostatic Absorption magnetic posting writing board, and by writing panel, back shroud, frame, be located at attaching plug and power switch on the frame, be located at and write panel and formed with electrostatic generator, the positive electrode that links to each other with electrostatic generator and negative electrode between the back shroud.Its special character is that it is 10-60mm that said positive electrode and negative electrode are made width with ferrous material, and thickness is the bonding jumper band shape of 0.1-3mm.

The utility model is owing to adopted above technical scheme, combine the strong point of electrostatic adsorption posting writing board and magnetic posting writing board, but thereby have both electrostatic adsorption posting, electrostatic precipitation, can carry out magnetic again puts up, plate face fluent writing, advantages such as easily wiping is easily smeared, and is easy to use, and the life-span is long.

Accompanying drawing 1 is a main TV structure schematic diagram of the present utility model;

Accompanying drawing 2 is the cross sectional representation of the utility model embodiment 1;

Accompanying drawing 3 is the cross sectional representation of the utility model embodiment 2;

Accompanying drawing 4 is the electrode structure schematic diagram of the utility model embodiment 1;

Accompanying drawing 5 is the electrode structure schematic diagram of the utility model embodiment 2;

Accompanying drawing 6 is the electrical schematic diagram of the utility model electrostatic generator.

Below in conjunction with accompanying drawing the utility model is further described.Embodiment 1 is shown in accompanying

drawing

1,2,4,6, a kind of Electrostatic Absorption magnetic posting writing board is provided with irony and writes panel [1], and the surface of writing panel [1] in irony is provided with paint film layer [10], paint film layer [10] adopts baking vanish technology to make with blackish green or black or whiteboard paint special.It is the metal foil of 0.10-0.5mm that irony is write panel [1] employing thickness, and general used thickness is the galvanized steel plain sheet of 0.2mm.Be provided with battery lead plate [5] near the inboard of writing panel [1], battery lead plate [5] is made of the thick thick phenolic aldehyde laminated cloth sheet material material of 1.5mm that is preferably of 1-2mm, to guarantee enough mechanical strengths and electrical insulation properties.Rear side at battery lead plate [5] is laid with positive electrode [6] and negative electrode [7], and positive and negative electrode is coated with electrically-conducting paint and is located on the battery lead plate, also can adopt metal pool paper or conductive fabric or sheet metal.Electrode width can be 20-60mm, is generally 30-50mm.The positive and negative electrode spacing can be wide with electrode width.Be to guarantee excellent conducting performance, being coated with thickness and should being no less than 0.1mm of conductive electrode coating.Positive and negative electrode is alternate is arranged to " returning " font or serpentine or vertical bar shaped arrangement.Around clipboard, be provided with frame [2], the bottom surface is provided with back shroud [9], be provided with power switch [3] and attaching plug [4] on frame, power switch [3] links to each other with electrostatic generator [8], and electrostatic generator [8] is arranged in the space that battery lead plate [5] and back shroud [9] and frame [2] surround.Electrostatic generator [8] is made up of decompression rectifier filter circuit [11], interruption circuit for controlling electricity turning [12], pulse oscillation circuit [13], high voltage pulse rectification circuit [14].Decompression rectifier filter circuit [11] is made up of transformer B1, rectifying tube D1, D2 and filter capacitor C1.Be interrupted circuit for controlling electricity turning [12] by 1C1,1C2, relay J and peripheral cell R1, R2, R3, C2, C3, C4, D3 forms, 1C1,1C2 adopts 555 time base circuits, their pin 8, pin 4 all connects positive source, pin 5 passes through C3 respectively, C4 ground connection, pin 1 ground connection, the pin 6 of 1C1, pin 2 passes through R2 successively, R1 connects positive source, by C2 ground connection, the pin 6 of 1C2, pin 2 is connected with the pin 3 of 1C1 by R3, while and R1, the tie point of R2 connects, be parallel with relay J and D3 between the pin 3 of 1C2 and the ground, the normally open contact J-1 of relay J is arranged on the positive source of pulse oscillation circuit [13].Pulse oscillation circuit [13] is made up of 1C3 and peripheral cell R4-R6, D4, C5-C8, BG1, pin 8, the pin 4 of 1C3 connect positive source, pin 5 is by C6 ground connection, pin 1 direct ground connection, pin 6, pin 2 connect positive source by R5, R4, and by C5 ground connection, pin 7 is connected with R4, R5 tie point, R5 is in parallel with D4, and pin 3 is connected with the base stage of BG1 by R6, C7 in parallel.The grounded emitter of BG1, colelctor electrode connects positive source by C8.High voltage pulse rectification circuit [14] is made up of transformer B2 and D5, elementary two that is connected across C8 of transformer B2, and D5 is a high voltage silicon rectifier stack, is connected on the positive pole of the secondary output end of transformer B2.The output of D5 connects positive electrode, and the negative pole of B2 secondary output end connects negative electrode.The operation principle of electrostatic generator [8]: the 220V alternating current provides power supply by K switch to circuit, transformer B1 reduces to 12V with the 220V electric main, output 12V DC voltage after D1, D2 carry out full-wave rectification, carry out filtering by capacitor C 1 after, be provided with back circuit workings at different levels.IC1 and R1, R2, C3 forms square-wave generator, by adjusting the resistance of R1, R2, can make the 3 pin output square-wave signal of IC1, this place is that to make it output duty cycle be 1: 0.5 square wave, and the square-wave signal of 3 pin of IC1 output just is to occur in high level, each ratio of 50% circulation of low level.The duration of high and low level can be realized by adjusting C2.The parameter often that this circuit is determined is that the high and low level of IC1 pin 3 outputs respectively is 5 seconds, and high and low level goes round and begins again, circulation output.IC2 is according to the Changing Pattern of the high and low level of IC1 output, corresponding output low level of its 3 pin and high level, and the relay J that control links to each other with its pin 3 also is interrupted action, and the time of being interrupted action is to move once in per 5 seconds.The normally open contact J-1 of relay also just provided 12V direct-current working volts every 5 seconds for IC3.IC3 and R4, R5, C5 form multivibrator, and this place is designed to the frequency of oscillation of 15-20K hertz, and IC3 the 3rd foot control system BG1 is by the frequency conducting of 15-20K hertz with end.BG1 communicates with the elementary of B2, so the secondary induction at B2 goes out high voltage pulse, through D5 high voltage silicon rectifier stack rectification output pulse direct current high pressure, the positive and negative electrode of pulse direct current high pressure with electrode [5] linked to each other, can between electrode, form the high-voltage electrostatic field, thereby make the energy that panel [1] obtains Electrostatic Absorption and dust suction of writing that is close to the non-electrode surface of electrode [5].Embodiment 2 is shown in Fig. 1,3,5,6, and a kind of Electrostatic Absorption magnetic posting writing board is provided with and writes panel [1], and write panel [1] and make of nonmetallic materials, as epoxy resin board, the wooden panel etc. of moulding.Be provided with paint film layer [10] on the surface of writing panel [1], be provided with positive electrode [6] and negative electrode [7] in the inboard of writing panel [1], positive and negative electrode is made of iron quality metal material, being made generally in thickness is 0.1-3mm, width is the ferrous metal band shape of 20-60mm, and the alternate one-tenth of both positive and negative polarity " returns " font or serpentine or vertical bar shape arrangement laying.Write panel [1] around be provided with frame [2], be provided with back shroud [9] in the bottom of clipboard, in the space that back shroud [9] and clipboard [1] and frame [2] surround, be provided with electrostatic generator [8], be fixed with power switch [3] and plug [4] on frame [2], the structural principle of electrostatic generator [8] is with embodiment 1.

Claims

1, a kind of Electrostatic Absorption magnetic posting writing board, be provided with frame [2], back shroud [9], on frame [2], be provided with power switch [3] and attaching plug [4], be connected with electrostatic generator [8] with power switch, be connected with positive electrode [6] and negative electrode [7] with the electrostatic generator output, it is characterized in that being provided with the battery lead plate [5] that the back side is used for fixing positive electrode [6] and negative electrode [7], be glued with irony in the front of battery lead plate [5] and write panel [1] in the front side of back shroud [9].

2, a kind of Electrostatic Absorption magnetic posting writing board, by writing panel [1], back shroud [9], frame [2], be located at power switch [3] and attaching plug [4] on the frame [2], be located at and write panel [1] and formed with electrostatic generator [8], the positive electrode [6] that links to each other with electrostatic generator [8] and negative electrode [7] between the back shroud [9], it is characterized in that it is 10-60mm that positive electrode [6] and negative electrode [7] are made width with ferrous material, thickness is the bonding jumper band shape of 0.1-3mm.

3, a kind of Electrostatic Absorption magnetic posting writing board according to claim 1 is characterized in that said positive electrode [6] and negative electrode [7] make of electrically-conducting paint or metal foil paper or conductive fabric or sheet metal, and its width is 20-60mm, is preferably 30-50mm.

4, a kind of Electrostatic Absorption magnetic posting writing board according to claim 3 is characterized in that its thickness is at least 0.1mm with the positive electrode [6] and the negative electrode [7] of electrically-conducting paint making.

5, a kind of Electrostatic Absorption magnetic posting writing board according to claim 3 is characterized in that said positive electrode [6] is alternate with negative electrode [7] equidistantly to be arranged to " returning " font or serpentine or vertical bar shaped is arranged.

6, a kind of Electrostatic Absorption magnetic posting writing board according to claim 1 is characterized in that said irony writes the surperficial baking of panel [1] paint film layer [10] is arranged.

7, according to any one described a kind of Electrostatic Absorption magnetic posting writing board of claim 1-6, it is characterized in that said electrostatic generator, by decompression rectifier filter circuit [11], be interrupted circuit for controlling electricity turning [12], pulse oscillation circuit [13], the high voltage pulse rectification circuit [14] that is located at pulse oscillation circuit [13] output formed.

8, a kind of absorption magnetic posting writing board according to claim 7, it is characterized in that said decompression rectifier filter circuit [11], formed by transformer B1, diode D1, D2, filter capacitor C1, said interruption circuit for controlling electricity turning [1 2] is made up of 555 time base circuit IC1, IC2, relay J and peripheral cell R1-R3, C2-C4, D3, said pulse oscillation circuit [13] is made up of 555 time base circuit IC3 and peripheral cell R4-R6, D4, C5-C8, BG1, and said high voltage pulse rectification circuit [14] is made up of B2, D5.