CN101491988A

CN101491988A - Roller shutter type magnetic blackboard

Info

Publication number: CN101491988A
Application number: CNA2009100146356A
Authority: CN
Inventors: 张莉楠; 张婉婷; 庞守美
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-03
Filing date: 2009-03-03
Publication date: 2009-07-29

Abstract

The invention relates to a rolling blind type magnetic blackboard, which comprises an upper rolling shaft, a lower rolling shaft and a rolling blind, wherein the rolling blind is connected with the upper rolling shaft and the lower rolling shaft, and comprises three layers: a magnetic film in the front, a protection layer on the back and an iron powder layer in the middle. When the rolling blind type magnetic blackboard is used, a magnetic pen is needed to match with the rolling blind type magnetic blackboard. When the magnetic pen is used for writing on the front face of the rolling blind, writing marks break the magnetic film, and the black iron powder adsorbed on the magnetic film falls off so as to leave the writing marks, thereby forming blackboard writings. When the blackboard writings need to be changed, a magnetic eraser is used for erasing the writing area to supplement the magnetic film which is broken because of writing, and the supplemented area adsorbs the black iron powder newly, so that the rolling blind type magnetic blackboard returns to a state before the writing newly so as to supplement the magnetic film as before. The rolling blind type magnetic blackboard can preserve the writing content with various continuous pictures, and has no dust. The rolling blind type magnetic blackboard has the advantages of flexible writing, no dust fly, preservation of class writing content, and the like, and is particularly suitable for teaching.

Description

A kind of roller shutter type magnetic blackboard

Technical field

The present invention relates to a kind of roller shutter type magnetic blackboard, belong to operation, Department of Transportation, printing branch, the big class of office appliance.

Background technology

With development of computer, electronic whiteboard and shadow casting technique have also progressed into the classroom, enriched the classroom form, reduced and write workload, still, because the input in advance often of its content, reasoning link in the middle of lacking, the content span is bigger, and the classroom flexible form is not enough, is difficult for using in such as science teachings such as mathematics, physics; Traditional blackboard is lost time owing to need to repeat erasable in the classroom, consumes teacher's muscle power, and dust from flying is arranged, and the classroom written contents can not keep for a long time and influence the classroom review.Be badly in need of a kind of blackboard of writing flexibly, not having characteristics such as dust from flying, hall class written contents can keep that has.

Summary of the invention

At above-mentioned the deficiencies in the prior art, the invention provides a kind of roller shutter type magnetic blackboard of writing flexibly, do not have dust from flying, hall class written contents to keep.

The present invention is achieved by the following technical solutions:

A kind of roller shutter type magnetic blackboard comprises upper winding shaft, lower winding shaft, roller shutter, it is characterized in that: described roller shutter is connected with upper winding shaft, lower winding shaft, and described roller shutter comprises three layers: the front is a magnetic film, and the back is a protective layer, and the centre is the iron powder layer.

During use, need a magnetic pen to be used: when writing in the roller shutter front with magnetic pen, the person's handwriting of writing has destroyed magnetic film, and black iron powder adsorbed on it comes off, and stays written trace, so just forms writing on the blackboard.During change, nuzzle up with magnetic and to write the zone, fill because of writing the magnetic film of destruction, then the part of mending is adsorbed black iron powder again, and the state before blackboard comes back to and writes reaches " repairing sth. old and make it as good as new ".When certain breadth is write in writing on the blackboard, by spool roller shutter " blackboard " is rolled, spill " blackboard " do not write, and make the institute written contents keep, be convenient to browse review.When writing content,, in the process of restPosing, brush magnetic again, make blackboard " brush old " as new " blackboard " despining when not needing.

Described magnetic film is the transparent panel that has magnetic, and it can adsorb iron powder, thereby is shown as black or other color of wanting.

Described magnetic pen is the pen that has magnetic, and the nib of magnetic pen can produce and the different magnetic of curtain writing surface (being magnetic film) magnetic continuously, and magnetic can not surpass the overlay area of nib.

Described magnetic is wiped and can be produced continuously and curtain writing surface (the being magnetic film) magnetic that magnetic is identical, and magnetic can not surpass magnetic and wipe the overlay area.

Roller shutter type magnetic blackboard of the present invention can be continuously several faces preserve written contents, and do not have dust, have and write flexibly, no dust from flying, can keep advantage such as hall class written contents, be particularly suitable for imparting knowledge to students.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the side view of Fig. 1.

Wherein, 1, upper winding shaft; 2, roller shutter; 3, lower winding shaft; 4, magnetic film; 5 iron powders; 6 protective layers.

The specific embodiment

The present invention is further illustrated below in conjunction with accompanying drawing:

A kind of roller shutter type magnetic blackboard comprises upper winding shaft 1, lower winding shaft 3, roller shutter 2, and as shown in Figure 1, roller shutter 2 is connected with upper winding shaft 1, lower winding shaft 3, and described roller shutter 2 comprises three layers: the front is a magnetic film 4, and the back is a protective layer 6, and the centre is an iron powder 5, as shown in Figure 2.

During use, need a magnetic pen to be used: when writing in roller shutter 2 fronts with magnetic pen, the person's handwriting of writing has destroyed the magnetic on the magnetic film 4, and black iron powder 5 adsorbed on it comes off, and stays written trace, so just forms writing on the blackboard.During change, nuzzle up with magnetic and to write the zone, fill the magnetic film 4 because of writing destruction, then the part of mending is adsorbed black iron powder 5 again, and the state before roller shutter 2 comes back to and writes reaches " repairing sth. old and make it as good as new ".When certain breadth is write in writing on the blackboard, roller shutter 2 can be rolled by upper winding shaft 1, lower winding shaft 3, spill the roller shutter of not writing 2, and make the institute written contents keep, be convenient to browse review.When writing content,, in the process of restPosing, brush magnetic again, make blackboard " brush old " as new roller shutter 2 despinings when not needing.

Claims

1. a roller shutter type magnetic blackboard comprises upper winding shaft, lower winding shaft, roller shutter, it is characterized in that: described roller shutter is connected with upper winding shaft, lower winding shaft, and described roller shutter comprises three layers: the front is a magnetic film, and the back is a protective layer, and the centre is the iron powder layer.