CN2574910Y

CN2574910Y - Rolling blackboard erazer

Info

Publication number: CN2574910Y
Application number: CN 02262344
Authority: CN
Inventors: 任锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-18
Filing date: 2002-10-18
Publication date: 2003-09-24
Anticipated expiration: 2012-10-18

Abstract

The utility model relates to a dust-free pixel blackboard. A blackboard body is provided with a plurality of fossae for forming the pixel, the inner part of each fossa is provided with bicolor magnetic beads, and the whole blackboard body and the fossae are covered by flat glass. A handwriting pen is formed from a bar-shaped magnet. A blackboard eraser is formed from a flat magnet. The width of the big blackboard eraser is the same with that of the blackboard body, and the big blackboard eraser is arranged on a walking rack with a small wheel. The walking rack is arranged on a guide rail, and is connected with a driving motor through a traction rope. The blackboard thoroughly eliminates dust in the process of writing and erasing, can not pollute environment, and thus is favorable for health and environmental sanitation. The utility model has the advantages of cleanness and high speed for erasing words and class time saving, and is favorable to increase teaching efficiency. One magnetic pen can be used permanently, which can save the cost of chalks.

Description

Dustless pixel blackboard

Technical field

The utility model relates to the blackboard of writing usefulness, particularly a kind of dustless pixel blackboard.

Background technology

How existing blackboard is made with timber, glass or cement.In write with chalk word and wiping word process, produce a large amount of dust and waft into aerial, pollute.Particularly in the classroom, easily teachers and students' health is worked the mischief, also unfavorable to environmental sanitation.Waste time and energy when wiping chalk writing, and chalk dust easily is trapped in the plate face, is difficult for wiping clean with present blackboard eraser.

Summary of the invention

The purpose of this utility model is the above-mentioned shortcoming that will overcome existing blackboard, and a kind of dust-free blackboard of easy wiping is provided.

Solution of the present utility model has:

1) blackboard plate body has the alveole of many formation pixels on this plate body;

2) press the separately double-colored magnetic bead of dyeing of magnetic pole, place in above-mentioned each alveole;

3) plate glass is covered on whole plate body and the alveole;

4) writing pencil that constitutes by bar magnet, it is the parts discrete with blackboard;

5) blackboard eraser that constitutes by flat magnet.

Above-mentioned 1) bottom of said alveole is provided with overturn the not magnetizable small iron plate of stabilization of magnetic bead in.

Above-mentioned 2) said double-colored magnetic bead is to be mixed after the bead that injection moulding is made by magnetic and molding powder in.In high-intensity magnetic field, magnetize promptly at last.

Above-mentioned 5) said blackboard eraser is identical with blackboard plate body fabric width in, is installed on the walker of a band steamboat, and this walker places on the guide rail, and walker links by pull rope and drive motors.

The utility model is compared with the blackboard of chalk with existing, has following advantage:

1. on blackboard, write, nuzzle up in the journey, thoroughly eliminated dust, will not contaminated environment, thereby help health and environmental sanitation.

2. the wiping word is clean, speed fast, save time in classroom, improves efficiency of teaching.

3. a magnetic pen can forever use, and energy-saving and environmental protection, does not hinder hand.

Description of drawings

Fig. 1 is the front view of dustless pixel blackboard.

Fig. 2 is the profile of Fig. 1.

Fig. 3 is the shape schematic diagram of magnetic pen.

Fig. 4 is the shape schematic diagram of blackboard eraser.

Fig. 5 is the assembly structure schematic diagram of blackboard.

The specific embodiment

Referring to Fig. 1,2, the blackboard assembly comprises the blackboard plate body of being made by black plastic or rubber 1, intensive pitting or the alveole 2 that constitutes pixel that have on it.Alveole is closely arranged, and both can be in-line arrangement, also can be wrong row, the scanning lattice of similar television set.The about 2.2mm of each alveole diameter among the figure, spacing 0.3mm.Be placed with a double-colored magnetic bead 3 in each alveole.So-called magnetic bead is the magnetic ball that N, the S utmost point are arranged, N polar hemisphere painted black, S level hemisphere painted white.The alveole 2 of putting magnetic bead can deeply can be shallow, can bury entirely magnetic bead, also can partly bury.After putting into magnetic bead in the alveole, at the plate body 1 positive clear plate glass 4 that attaches, in case magnetic bead drops out, another effect of glass is to write on its surface, referring to Fig. 5.

Writing pencil 5 is a bar magnet.When writing on plate glass with the N utmost point, because homopolar-repulsion, heteropole is inhaled mutually, so streak the place at N utmost point nib, the S utmost point of white turns to the front, and the N utmost point turns to the back side, and what show on the blackboard is the black matrix wrongly written or mispronounced character, sees Fig. 5.Certainly the also available S utmost point is write, but needs the background color of blackboard to become white, can show white gravoply, with black engraved characters like this.

When wiping on the blackboard writing, can adopt the blackboard eraser 6 of flat magnet, as shown in Figure 4, it is loaded on the base 7 as need.One utmost point such as the S utmost point of flat magnet touch blackboard, can make the black N of magnetic bead extremely outwards overturn, and make inswept part become black heavily again.Above-mentioned writing pencil 5 and blackboard eraser 6 can adopt permanent magnet, also can adopt electromagnet.

In order to eliminate whole blackboard writing fast, blackboard eraser 6 can be a rectangular flat magnet, its height and the same width of cloth of blackboard.In the upper and lower both sides of blackboard horizontal guide rail is set.Strip blackboard eraser is loaded on the walker of a band steamboat.Motor can make strip blackboard eraser along the guide rail move left and right by the pull rope of deceleration device drive walker, wipes the writing on the whole blackboard fast.During wiping, the S pole plate is wiped inswept, and the N utmost point of black turns to the front, makes blackboard all become black.

Referring to Fig. 5, can establish a small iron plate 8 in the bottom of alveole 2, preferably not magnetizable small iron plate.When magnetic bead overturns, can play the effect of settling position.

Claims

1, dustless pixel blackboard is characterized in that it has:

1) blackboard plate body (1) has the alveole (2) of many formation pixels on plate body (1);

2) press the separately double-colored magnetic bead (3) of dyeing of magnetic pole, place in above-mentioned each alveole (2);

3) plate glass (4) is covered on whole plate body (1) and the alveole (2);

4) writing pencil that constitutes by bar magnet (5), it is the parts discrete with blackboard;

5) blackboard eraser that constitutes by flat magnet (6).

2, pixel blackboard as claimed in claim 1 is characterized in that 1) bottom of central foveola (2) is provided with overturn the not magnetizable small iron plate (9) of stabilization of magnetic bead.

3, pixel blackboard as claimed in claim 1 is characterized in that 2) in said double-colored magnetic bead (3) be to mix after the bead that injection moulding is made by magnetic and molding powder.

4, pixel blackboard as claimed in claim 1 or 2, it is characterized in that 5) in said blackboard eraser (6) identical with blackboard plate body (1) fabric width, be installed on the walker of a band steamboat, this walker places on the guide rail, and walker links by pull rope and drive motors.