CN2306124Y

CN2306124Y - Teaching board

Info

Publication number: CN2306124Y
Application number: CN 97221017
Authority: CN
Inventors: 张万鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-07
Filing date: 1997-07-07
Publication date: 1999-02-03
Anticipated expiration: 2007-07-07

Abstract

The utility model relates to a teaching board. The utility model is characterized in that piece of flat cloth (9) without continuous ends encircles a driving roller and a driven roller (1, 2), forming a tension flat cylinder shape; a cleaning roller (4) adhesively press the outer surface of the flat cloth, and the inner surface of the position where the cleaning roller is stuck between the rollers is provided with a fixed lining plate (8); the cleaning roller is driven by a transmission mechanism to rotate in the same direction of a driving roller by linking; the flat cloth can move by rotating the driving roller, and the writing written by aquosity color pen on writing area can also move to the cleaning roller to be erased, so the utility model has the advantages of convenience, labour saving, and no dust; in addition, a person can write in the most comfortable height and posture, and the flat cloth can be moved to the appropriate position be watched, so the utility model has the advantage of convenient operation.

Description

Board of education

The utility model relates to teaching aid, specifically, relates to a kind of board of education, and particularly the wiping labour-saving does not have the dust board of education.

In using at present a large amount of use board of education---the blackboard majority is wood plate surface, cement face or ground glass surface, the word that writes with chalk, the problem of its existence mainly contained two: one, it is bothersome to wipe writing, when particularly wiping whole plate face writing after class, and dust is big; The 2nd, the plate face is fixed, and eminence and lower are write inconvenience.In recent years, have blank to occur, this is a kind of white hard plastic board, writes with the oiliness crayon, though improved dust problem, except oiliness crayon valency is expensive, wipe the bothersome problem of writing and still exist, and the oiliness writing is erased more difficult.In addition, mould blank firmly and still can not exempt the above second shortcoming.Also have with blackboard make two each other jacking condition solve the eminence position and write and can't reach, write bend over the again problem of the back of a bow of lower.But first because of plate is heavy, lifting push-and-pull effort; Second two blackboards can only be changed over fully, else if a lifting half, the back plate on writing will be blocked at header board.Certainly shortcoming still exists aspect erasing the board.

The purpose of this utility model provides a kind of board of education, and wiping is saved trouble, no dust.

Another purpose of the present utility model provides a kind of board of education, can change the height of handwriting, and the writer can be write on proper height, and the writing part can raise or be reduced to and be suitable for seeing the height of looking.

The technical solution of the utility model is as follows:

A kind of board of education is characterized in that drive roll is arranged, driven voller, divides to be located at two ends that teaching board is write the district; Plain cloth is arranged, and the end limit connects into continuous Endless, and inner surface encloses described driving and driven roller and is tensioned into oblate tubular; The one clear roller of wiping, its axis is parallel to described driving and driven roller, the described plain cloth outer surface of surperficial pressing; Drive roll is wiped roller clearly by transmission mechanism driven rotary linkage, particularly rotates in the same way with drive roll; Paste its inner surface at described plain cloth writing part and establish fixing liner plate.

This board of education is a writing surface with the plain cloth outer surface, make the use crayon, by drive roll rotate make plain cloth do about (or about) move, move on to as the writing position and to wipe the roller position clearly, owing to erase writing with relatively moving of clear wiping roller surface in the plain cloth surface, save trouble, laborsaving, no dust is raised outward.

Because plain cloth can move, so the user writes with posture easily at his comfortable height at one's discretion, then write after then plain cloth being moved, thereby semi-girder can not occur and weigh foot in the hand and write toward eminence, or hard case of writing of the hunchbacked past lower of bending over.Out of office the student also not the reason writing cross low and can't see.Be that this board of education is easy to use.

Fig. 1 is the utility model embodiment front schematic view.

Fig. 2 is an A profile among Fig. 1.

Fig. 3 is the part of B profile among Fig. 2.

Fig. 4 is the detailed structure view of label 5 parts among Fig. 3.

Below with reference to accompanying drawing embodiment is described.

Fig. 1 is the front elevation of the utility model embodiment, and Fig. 2 is the A profile of Fig. 1.This routine board of education has a framework, comprises loam cake 12, lower cover 13, left beam 10, right beam 11, and middle surperficial vacancy for writing the district, can be seen the writing surface 91 of the plain cloth 9 in the framework, and upper and

lower covers

12,13 can be opened (see figure 2), so that the installation of each parts.Be furnished with drive roll 1 in the framework, driven voller 2, be arranged in below and top, around roller 1,2 surface, 9 two oblate tubulars of the continuous Endless of bonding formation of plain cloth that one width of cloth Polypropylence Sheet constitutes, roller 1, plain cloth between 2 is a writing surface 91, writing surface 91 has liner plate 8 behind, liner plate is hard dull and stereotyped, for example adds laminating on the base plate of plastic plate or wood powder or wood fragments compacting, but preferably the middle part is more main than close, two snare drums up and down of driven voller rise, be the large diameter face of cylinder, use in this example every meter between the upper and lower the distance amount of heaving be 5mm, help the plain cloth face like this and be close to liner plate, make write more smooth.Have a clear roller 4 of wiping its roller surface to be attached on the plain cloth outer surface be provided with like this, make whole oblate tube plain cloth 9 at

roller

1,2,4 and liner plate 8 supportings under be tensioned state.Preferably, wipe roller 4 clearly and be located near the drive roll 1, can also be pressed on the drive roll 1, can certainly be located near the driven voller 2 or be pressed on the driven voller 2 across plain cloth as this example.Because clear existence of wiping roller 4 will make plain cloth 9 recessed to central authorities, too friction is impaired at liner plate 8 edges to cause plain cloth, therefore also can establish registration roller 3, its role is to it and driven just in time plain cloth being attached on the liner plate together that is positioned at liner plate 8 other ends clear the wiping between roller 4 and the liner plate 8.This structure is the measure that prolongs the plain cloth life-span.Described roller 1,2 is a rubber roll, should be that hard materials such as steel, wood, duroplasts are the rubber roll that core is surrounded by glue-line outward at least, so that with plain cloth enough frictional force is arranged, especially drive roll 1 is like this.The clear roller 4 of wiping is the such structure of surface layer that a kind of parcel in felt soft and/or the porous material, foamed plastics, sponge, the flannelette etc. is arranged outward by the core that above-mentioned hard material is made.It is needless to say that each roller has the bearing supporting.Plain cloth is tightened in order to make, the bearing of driven voller 26 has regulating spring 7 (Fig. 3).

The drive roll spindle nose adds transmission mechanism and drives, and this transmission mechanism can be any pattern, and decelerator for example is by the push button operated rotating; Or handle, with the positive and negative rotation of hand; Or line wheel, making and draw wheel and drive roll 1 positive and negative rotation by pulling the running rope rope, these are detailed icon not, and figure is to be to know in the prior art.

This example can be done some changes.Except that being provided with the position of the top clear wiping roller of having mentioned 4, the driving and driven roller position is exchanged also up and down and is fine, promptly do not limit drive roll must below; Driving and driven roller 1,2 respectively is located at and left and rightly also is fine, the face of cylinder of heaving than left and right sides sideline in the middle of correspondingly liner plate 8 is; Be printed in length and breadth latent bar on the plain cloth, so that write straight and use graphed lines, convenient teaching during trace figure as.

Below narration is by the scheme that changes on Fig. 3,4 another structure of representing, and in this scheme, its changing unit is to wipe clearly the roller supporting structure, will only describe vicissitudinous part here.The clear roller of wiping should clean in use for some time, the supporting structure of fixedly feigning death will make and clean inconvenience, clear wiping roller in this example is detachable, realize that dismountable scheme is to wipe clearly the structure of the bearing block 5 of roller, by Fig. 3,4 as can be known, bearing 53 is located in the bearing holder (housing, cover) 54, and bearing holder (housing, cover) 54 is located at and is welded in left and right beam 10, in the bearing grooving 55 on 11, establish lock Xiao 51 on the bearing grooving 55, spring 52 tops are arranged, and it makes the tongue on band inclined-plane stretch in the bearing grooving 55 downwards, when transfering to lock Xiao 51, bearing holder (housing, cover) 54 just can take off together with the clear roller 4 of wiping, and conveniently cleans the clear roller 4 of wiping, when bearing holder (housing, cover) pushes, the inclined-plane of lock Xiao's 51 tongue is pushed, and lock Xiao 51 just make a concession, and last bearing holder (housing, cover) 54 is in place, lock Xiao 51 reset and lock it in the bearing grooving 55, makes to wipe roller 4 clearly and be pressed on the plain cloth face in running order.

Claims

1, a kind of board of education, it is characterized in that drive roll is arranged (1), driven voller (2) divides to be located at two ends that teaching board is write the district; Plain cloth (9) is arranged, the continuous Endless in end limit, inner surface encloses described driving and driven roller and is tensioned into flat drum shape; The one clear roller (4) of wiping, its axis is parallel to described driving and driven roller, the described plain cloth outer surface of surperficial pressing; Drive roll (1) is particularly rotated with drive roll in the same way by the described clear wiping roller of transmission mechanism driven rotary linkage (4); Paste its inner surface at the writing part (91) of described plain cloth and establish fixing liner plate (8).

2, according to the board of education of claim 1, it is characterized in that two limits of the close described driving and driven roller of described liner plate (8) middle part ratio are outwards heaved.

3, board of education according to claim 1 or 2, it is characterized in that the bearing holder (housing, cover) (54) that supports described clear wiping roller (4) places in the fixing bearing grooving (55), by activity lock Xiao (51) locking bit of being located on the described bearing grooving (55), unplug described lock Xiao (51), described bearing holder (housing, cover) (54) can shift out from described bearing grooving (55).

4, according to the board of education of claim 3, the bearing block (6) that it is characterized in that supporting described driven voller (2) is withstood to the direction of the described plain cloth of tensioning (9) by spring (7).

5, board of education according to claim 4, it is characterized in that having and be parallel to described driving and driven roller and wipe roller (1 clearly, 2,4) registration roller (3) is located at described liner plate (8) limit near described clear wiping roller (4), and described registration roller (3) and the roller that is positioned near described liner plate (8) another side make described plain cloth (9) just in time be attached on described liner plate (8) face together.

6, according to the board of education of claim 1 or 2 or 4, it is characterized in that described transmission mechanism is that the decelerator, the line that are connected in described drive roll spindle nose draws a kind of in wheel or the handle.

7, according to claim 1, any board of education in 2,4,5 is characterized in that institute's plain cloth (9) made by Polypropylence Sheet.

8, according to claim 1, any board of education in 2,4,5 is characterized in that the clear roller (4) of wiping of institute has roller core and roll surface, and described roller core is that hard material constitutes, and described roll surface is made of soft and/or porous material; Described driving and driven roller (1,2) has the rubber roll face.

9, board of education according to Claim 8 is characterized in that described soft and/or porous material is a kind of in felt, foamed plastics, sponge or the flannelette.