CN2427345Y - Arc shaped returning, semi-sealing and multi-functional type chalk-dust free blackboard wiper - Google Patents

Abstract

The utility model relates to a dust free blackboard eraser which mainly solves the problems that chalk dust is collected, and the dust pollution can be prevented. The utility model is divided into two layers by a partition board. A surface layer is provided with a row of scraping bodies which can rotate and can be positioned in parallel. The scraping bodies at both sides are respectively provided with a dust blocking piece. The upper end and the lower end are respectively provided with a dustproof piece and a dust collecting embankment. When the utility model works, a blackboard is scraped in a multi-stage brake mode by the utility model, and three surfaces of the utility model are closed. When a direction is changed, dust can be carried in a box. A base layer is provided with a system for storing dust and cleaning dust. In addition, a cleaning brush which can be flexibly used is arranged. The utility model has the advantages of high rated of dust precipitation, good scraping purity, convenient usage and low manufacturing cost.

Description

Arc turns round semi-enclosed multi-functional dust-free black board eraser

The utility model belongs to culture and education apparatus field, is a kind ofly need not add other energy consumptions arc revolution, semi-enclosed, Mobyneb dust-free black board eraser that can automatical and efficient control of dust in wiping the process of smearing.

At home, mainly by chalk, dust pollution is also perplexing teachers and students to teaching board always all the time.Be sort this problem out, many new designs and design have occurred, nearly 400 examples were just arranged to blackboard eraser class in 1999 patent application in single 1986, also occurred electrodynamic type dust-sucking eraser, on-electric formula control of dust blackboard eraser on the market.But even to this day, most schools are a large amount of use remain traditional box-like or piece formula blackboard eraser, dust still flies upward, these technology or product fail to popularize, trace it to its cause, be because design itself also have deficiency, or with use habit, level of consumption incompatibility.As electric dust absorption blackboard eraser, mechanical type dust-sucking eraser, the complex structure rapid wear noise, power consumption effort, cost height are arranged, and most of volume is bigger than normal, uses inconvenience.Other controls of dust, poly-dirt, dedusting, dustproof and even Dustless eraser, though respectively have ingeniously, resultant effect is undesirable, fails to reach or fail to reach comprehensively requirements such as actual effect, convenience, attractive in appearance, cheapness.

In the design that dust initiatively can be brought in wiping, application number 87208436 " control of dust blackboard eraser ", 88211205.8 " dust-removing blackboard erasers ", 90218126.2 " roller dust absorption blackboard eraser ", 90220756.3 " automatic dust collection blackboard erasers " etc. are arranged.Its concurrent is to adopt the unidirectional stop rub body of cylinder shape, and one takes turns stop during work, and one takes turns rolling.Because rolling friction is little, scroll wheel only runs on writing, thereby sees on the whole, has only half rub body to play and wipes the word effect, and it is not high to clean efficient.In addition, the stopping wheel outside still has the more amount dirt that overflows, the dust-collecting box too fat to move burden that also seems.

Overflow the design of flying upward from direction of motion back at anti-dust, at application number 96214628.5 " dust-free black board eraser ", 96212810.4 " chalkboard erasers ", 97237644.5 " control of dust chalkboard eraser " etc., its concurrent is in the box side dust cover, baffle plate or rubber tire to be set.Facts have proved that for micronic dust, this setting is effective.But when dust more for a long time, the pressure of retaining layer and blackboard such as too small then still has more dust to overflow, if pressure is excessive, then can stay one scratch on the blackboard, this is difficult to satisfactory to both parties.In addition, have the drawback of scraping word band dirt, then interlinked mechanism need be arranged, complexity, rapid wear, inconvenience with lift with the fixed stop layer.

People-oriented for the utility model, is based on domestic teaching needs, and purpose provides a kind ofly can efficiently wipe word, control of dust, again compact conformation, cost is low, convenience is handy, the novel blackboard eraser that is easy to popularize.

The purpose of this utility model realizes that by four parts such as the close-fitting wiping that is provided with in the rectangular case and receipts (suction) dirt system, dust-break and protection system, storage dirt and clear dirt system, cleaning brush two kinds of similar schemes are arranged.The structure of scheme one is: establish a dividing plate (2) at the middle part of housing (1), dividing plate is fixing by screw and reference column (20), bearing (10), alignment pin (12) are arranged on the dividing plate, on bearing, establish the vertical parallel placement of a row, part is exposed the outer column rub body of box body, and the material of rub body and high adsorption capacity pliable and tough, well-pressed by super power collodion etc. and bar shaped or L shaped rotating shaft stickup cut and form.Left side rub body (5), right rub body (3) fuse with shelves dirt sheets (8) (7), the dust-break sheet is the dihedral strip, and a bit of friction plate of taking the both sides twenty percent of striding is arranged, at spacer of establishing pair of parallel of rotating shaft, with the alignment pin acting in conjunction, shelves dirt sheet is vertical with blackboard surface when making the limit wipe the outward turning location.Middle rub body (4) cross section is fan-shaped, about 90 ° of breach arcs, and alignment pin is located between breach.More than form wiping and receipts (suction) dirt system.The inboard control of dust dike (6) of pasting in the box body lower end, a dust-break thin slice parallel with veneer established at control of dust dike middle part, and respectively there is the small pieces dust-break skirt parallel with the box side both sides, are pasted with dustproof catch in inboard, box body upper end, and two ends are curved, and the oblique point of top margin is outwards.When firmly pressing plate was wiped, control of dust dike front end can ride on the bearing, and dustproof catch can make housing can not directly contact with blackboard, with anti-scratch blackboard to overhanging.Catch on the rub body, control of dust dike and upper stop piece are formed dust-break and protection system.Median septum becomes dust-storage chamber with the box antiform, enters the mouth to be infundibulate or bugle shape structure (11), and its exit face and box parallel sided export the perforate (15) into the box top margin.Clear dirt is by button (16) and gate (17) control.More than form storage dirt and clear dirt system.Be provided with the little brush of cleaning (18) that material such as sponge is made at box back angle, the box two sides have been cast with the bar or the grain (13) of anti-skidding massage effect.Scheme two and scheme one are basic identical, and different is that (21) are wiped on the left side and the right wiping (22) is cut and formed by the rotating shaft of trisquare shape and the tabular catch that a bit of circular-arc friction plate is arranged, Wiping material stickup.Be stained with triangle sealing strip (25) at the blackboard eraser medial surface.

Operation principle.With scheme one is example, supposes laterally to wipe in the face of the blackboard eraser back.When blackboard eraser moved right, each rub body with the rolling certain radian, by stop, effectively wiped writing under the stopping of alignment pin under the frictional force effect.At this moment the catch of right rub body (7) has forwarded in the box body, and the catch of left rub body (8) has forwarded to outside the box body, with preceding what rub body end can adsorb stop something lost dirt bottle up.The dust that drops down is caught by control of dust dike (6), and the airborne dust that makes progress is blocked by top dustproof sheet (9).So just formed the duty that a multistage slip is cleaned, three side sealing closes.Experiment shows that dust mainly concentrates on rub body direction of motion forward position, and reduces step by step, thereby is lost in and has only the minute quantity micronic dust on the dust-break sheet, and the dust-break sheet is dust-break but also do not stay scratch not only.When blackboard eraser during to left movement, each rub body will be turned back in the box with the dust of absorption, go to certain angle after, under the effect of alignment pin,, reenter multistage wiping, three side sealing closes state again by stop.In the moment that alignment pin is run in the rub body rotation, impulse force makes the rub body vibration, and the dust of absorption is shaken off.After originally the position of wiping dirt changed in the box, pressure disappeared, and spring-go returns original state, also part dust bullet is fallen.Like this, the dust major part of last direction motion absorption falls in the box.So move in circles, reach scratch, control of dust, dust-break purpose.Dust falls, and accumulates at the bottom of the box after being caught by the control of dust dike.When blackboard eraser is taken from blackboard, the dust that gathers will enter dust-storage chamber through funnel (11) with the variation of blackboard eraser direction.Because the design of special opening, the dust of dust-storage chamber is a half of exceed capacity not, and dust can not flow backwards from bell mouth.The catch at control of dust dike middle part is in order to prevent that when wiping faces down the dust that does not enter dust-storage chamber temporarily spills from the dike mouth.If fall dirt, only need tiltedly put blackboard eraser, with referring to take the photograph touch the button (16) naturally, gate (17) can be opened, and dust is poured out through exporting (15) along guide plate, and the late gate of loosing one's grip will be shut again.The principle of scheme two and scheme one are similar, and different is: when blackboard eraser moved right, the right rub body (21) did not contact with blackboard, and catch (23) is parallel with blackboard, the work of all the other rub bodies, also be multistagely clean, three side sealing closes state.Equally, when blackboard eraser during to left movement, left side rub body (24) also leaves blackboard, and catch is parallel with blackboard, and all the other its benefits are the limit to be wiped always work in the last level, and it is minimum to adhere to dust, in the moment of direction conversion, also tightly with the dust retaining in box framework.

Advantage and effect: experiment shows that two schemes of the utility model reach desirable effect all with succinct design.The one, because the multistage slip of when work wipes, increased a level time and a contact-making surface, clean the efficient height, cleanliness is good, only need once nuzzle up generally speaking, just can reach the scratch requirement, the plate face does not have scratch yet, need not repeatedly, is better than the designs of traditional blackboard eraser and aforementioned patent.The 2nd, every grade of rub body is not only wiped writing but also be with dust, ingenious in addition three side sealing flexibly closes design and good switching, dust removal efficiency is very high, reach more than 98%, through observing, almost do not have airborne dust during work in the air, this is that common blackboard eraser is incomparable, and is better than the patent design and the design of electric dust absorption class of drawing row.The 3rd, adopted compact double-decker; reduced volume; shape that can be designed to suit and size; adopt natural storage dirt, flicking to go out the protection of dirt, two ends location and massaged anti-skidding design; image is exquisite, elegant, attractive in appearance; use also very convenient, suitable hand, this also is that other designs are difficult to accomplish.The 4th, be installed with the little brush of cleaning of an exquisiteness, glue grey trace or dirt on hand and massage line together in order to cleaning, make product inject a kind of humanistic spirit, be that other designs are never advised.The 5th, simple structure does not need electric energy, than electrodynamic type considerably cheaper, is fit to China's national situation, is convenient to popularize.The 6th, the rub body pressure can be limit in certain amplitude automatically, and rub body is replaceable, and the life-span is long, and cost is low.

Accompanying drawing is each enforcement figure of two schemes of the utility model.

The wiping face view of Fig. 1, scheme one.

Housing (1), dividing plate (2), right rub body (3), middle rub body (4), left rub body (5), control of dust dike (6), right catch combination (7), left catch combination (8), dustproof sheet (9), bearing (10), funnel case (11), alignment pin (12), massage bar (13), dust-leading board (14), dust mouth (15).

The back side cutaway view of Fig. 2, scheme one.

Clear dirt button (16), gate combination (17), cleaning brush (18), trough rim (19), fixed leg (20).

The A-A view of Fig. 3, Fig. 1.

The B-B view of Fig. 4, Fig. 1.

The wiping face view of Fig. 5, scheme two.

Right rub body (21), left rub body (22), right catch combination (23), left catch combination (24), sealing strip (25).

The C-C view of Fig. 6, Fig. 5.

Below in conjunction with accompanying drawing, an embodiment of the present utility model is described:

The embodiment of scheme one.Annotate system: annotate system control of dust dike (6), dustproof sheet (9) and dust-break combination (7), (8) with plastic cement; Annotate system housing (1), dividing plate (2), funnel case (11), each rub body rotating shaft, button (16), gate (17) with plastics, its middle shell and cleaning brush groove, button groove, flashboard reference column, dividing plate reference column, funnel reference column, dust-leading board, dust mouth, the one-shot forming of massage bar, dividing plate and each supporting base, alignment pin once-forming.Install: put into funnel, install button and gate, stationary barrier, paste control of dust dike, dustproof sheet, to push the relevant position through the bonding rub body that cuts into by Wiping materials such as sponge and rotating shaft then, to put into the brush groove by sponge and the bonding little brush that cuts into of plastic bottom board, whole blackboard eraser installs.

The enforcement of scheme two and scheme one is identical substantially, different has been many sealing strip: cut into the triangle strip by sponge, simultaneously be pasted on the box inboard, last angle just contacts with dustproof catch.Among two embodiment, catch all keeps tight the contact with rub body, but adhesion.

Among last two embodiment, shell also can be made various art modellings as required, and rub body bar number also can need increase and decrease flexibly according to the space.

Claims (10)

1, a kind of arc turns round semi-enclosed multi-functional dust-free black board eraser, is made up of housing, dividing plate, rub body, dust-break sheet alignment pin, bearing, control of dust dike, funnel case, button, gate, cleaning brush, sealing strip, massage line etc.It is characterized in that: inner by the dividing plate separated into two parts, there is the rub body of 3 to 5 rotatable certain radian, the pin that can be positioned braking in the front, wherein on the rub body of both sides the dust-break sheet is housed, the arc friction plate is arranged on the dust-break sheet, be fixed with alignment pin and bearing on the dividing plate, two funnel cases, button, gate and dust mouths are arranged at the bottom, there is dustproof catch on the top, there is the control of dust dike lower end, and sealing strip is equipped with in the inboard, two sides, there are anti-skidding massage line or grain in the outside, and the blackboard eraser back side is provided with cleaning brush.In wiping moving process, each rub body is in on-position, and the catch on the last grade rub body contacts with blackboard, and three side sealing is closed; In conversion direction moment, the rub body rotation is brought dust in the box into.

2, arc according to claim 1 turns round semi-enclosed multi-functional dust-free black board eraser, it is characterized in that enclosure interior is divided into two parts up and down by dividing plate, and word, control of dust are wiped in top, bottom Chu Chen, clear dirt.

3, arc according to claim 1 turns round semi-enclosed multi-functional dust-free black board eraser, it is characterized in that: parallel installation how to pivot only certain angle, by the rub body of alignment pin stop, rub body rotation during commutation, dust is brought in the box, rub body stop under other situation is in the wiping word state.It is fan-shaped that wherein the rub body cross section of mid portion is the 270 degree left and right sides, by alignment pin stopping of sector notch central plane controlled its rotation.

4, arc according to claim 1 turns round semi-enclosed multi-functional dust-free black board eraser, it is characterized in that: two side rub bodies and dust-break sheet are combined into one, and dust-break sheet and rub body are isometric, and with shaft parallel, the cross section is included in the circle of rub body place.The dust-break sheet by elasticity preferably material such as plastic cement make, two kinds of sheet bar and horn shape bars are arranged.The friction plate on a bit of cross-over connection both sides is arranged in the dust-break sheet, and its arc and rub body are in same circle.The side rub body is controlled jointly by the spacer of being located at the end or breach central plane and alignment pin, and the anglec of rotation is about 90 or 180 degree.

5, arc according to claim 1 turns round semi-enclosed multi-functional dust-free black board eraser, it is characterized in that inboard, box body lower end is pasted with the control of dust dike, and there is a dust-break thin slice parallel with veneer at control of dust dike middle part, and both sides respectively have a small pieces dust-break to protect skirt.

6, arc according to claim 1 turns round semi-enclosed multi-functional dust-free black board eraser, it is characterized in that inboard, box body top is pasted with dustproof sheet, and the dustproof sheet two ends are curved, and the top is angular cut, and otch is outside.Dust-break sheet during work and on the rub body, control of dust dike are formed semiclosed dust-break system.

7, arc according to claim 1 turns round semi-enclosed multi-functional dust-free black board eraser, it is characterized in that having two funnel cases, and funnel case is located at the box body bottom, exports (osculum) towards box top direction, exit face and box parallel sided.

8, arc according to claim 1 turns round semi-enclosed multi-functional dust-free black board eraser, it is characterized in that dust-storage chamber at the box back, and the box top has the dust mouth, and clear dirt is by the button control of being located at the box side or the box back side.

9, arc according to claim 1 turns round semi-enclosed multi-functional dust-free black board eraser, it is characterized in that the blackboard eraser back side is provided with cleaning brush, is positioned over to wipe in the groove, can take out flexibly and fix; Be provided with anti-skidding massage bar or grain in the blackboard eraser two sides.

10, arc according to claim 1 turns round semi-enclosed multi-functional dust-free black board eraser, it is characterized in that adopting as required suitable material to make various moulding and suitable specification.

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