CN103895427B - Simple and easy dust-removing blackboard eraser and using method thereof - Google Patents
Simple and easy dust-removing blackboard eraser and using method thereof Download PDFInfo
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- CN103895427B CN103895427B CN201410098552.0A CN201410098552A CN103895427B CN 103895427 B CN103895427 B CN 103895427B CN 201410098552 A CN201410098552 A CN 201410098552A CN 103895427 B CN103895427 B CN 103895427B
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Abstract
The present invention relates to a kind of simple and easy dust-removing blackboard eraser and using method thereof, the rub body of this blackboard eraser is fixed in housing, and before and after rub body, both sides are provided with dust-break sheet, and the left and right sides is provided with dedusting sheet, and described dedusting sheet port is towards rub body；It is characterized by described dedusting sheet place be provided with move back and forth with rub body and the check valve of in time folding, described dedusting sheet has magnetic and flexibility；This blackboard eraser in blackboard wiping process, the double blackboard that touches of rub body, dust-break sheet, dedusting sheet, leave smaller gap between dedusting sheet and edge, rub body face；Check valve is located at dedusting sheet port, and check valve is provided with friction extension rod, overhead kick, and check valve is elastic setting；This blackboard eraser left and right sides is provided with dedusting chamber, and rear side is provided with dust-collecting cavity.Additionally, this blackboard eraser body face also can be provided with elastomer between drain pan, design dust stop tab substitutes check valve etc..The present invention can effectively dust Control in dust-collecting cavity, it is to avoid dust disperses everywhere, contributes to carrying out of education activities.
Description
Technical field
The present invention relates to realia field, specifically a kind of simple and easy dust-removing blackboard eraser and using method thereof.
Background technology
Blackboard eraser is essential in education activities, and existing blackboard is formed through disposable compacting by high polymer alloy granule and epoxy resin substantially, can be attracting with magnetisable material.Current blackboard eraser, when erasing chalk writing, generally causes the phenomenon that dust flies upward everywhere, impact teaching, and contaminated environment, harm teachers and students are healthy.In order to solve problems, market also has multiple electric dust absorption blackboard eraser, but owing to its price is higher, easily breaks, it is necessary to charging, have the problems such as noise, and be difficult to be promoted.Meanwhile, other blackboard eraser dust absorbing structures are relatively simple, use more convenient；The application number 201320298591.6 that this type of blackboard eraser such as Chinese patent literature is published, utility model title " a kind of anti-dust eraser ", authorized announcement date on November 6th, 2013.Though existing wiping blackboard structure has been improved by above-mentioned blackboard eraser, but its dust removing effects is still inconspicuous, and comes with some shortcomings, therefore need further improvement.
Summary of the invention
When the present invention is for overcoming ordinary blackboard eraser wiping, dust disperses and electric blackboard eraser price is higher, troublesome poeration, the problem easily broken everywhere, it is provided that a kind of simple and easy dust-removing blackboard eraser and using method thereof.The dust wiped is included in dedusting intracavity by this blackboard eraser, and focuses in dust-collecting cavity by the dust of dedusting intracavity, is not only simple in structure, and cost is low, easy to use, and efficiently avoid the phenomenon that dust disperses everywhere, so that teaching environment is unaffected.Its objective is to be achieved through the following technical solutions.
A kind of simple and easy dust-removing blackboard eraser, this blackboard eraser includes housing, rub body, dust-break sheet, dedusting sheet, check valve, dedusting chamber, dust-collecting cavity, and described rub body is fixed in housing, and before and after rub body, both sides are provided with dust-break sheet, the left and right sides is provided with dedusting sheet, and described dedusting sheet port is towards rub body；It is characterized in that described dedusting sheet place be provided with move back and forth with this blackboard eraser and the check valve of in time folding；Namely left side and right one-way valve can move back and forth with this blackboard eraser and one hold a conjunction so that dust can only enter dedusting intracavity, without being scattered dedusting chamber；Meanwhile, leaving small gap between dedusting sheet and edge, rub body face, dust enters dedusting intracavity by gap.Described dedusting sheet has magnetic and flexibility, consequently facilitating dedusting sheet and this blackboard eraser adhesive so that dust will not be scattered dedusting sheet；Namely this blackboard eraser is in blackboard wiping process, rub body, dust-break sheet, dedusting sheet is double touches blackboard, the rub body face of described rub body is higher than the port surface of dedusting sheet and dust-break sheet, and rub body face is touched with blackboard jointly mutually with dedusting sheet and dust-break sheet port, it is ensured that the dust removing effects of this blackboard eraser.This blackboard eraser left and right sides is provided with dedusting chamber, and similar trapezium structure also can be made in the cross section of its chamber, so that inner space is relatively big, and is easy to dedusting.Rear side is provided with dust-collecting cavity, and dust-collecting cavity has certain storage area, and the dust of dedusting intracavity is fallen in dust-collecting cavity due to action of gravity；Meanwhile, the feature designing dust removal combined chamber of rear end dust-break sheet, it is designed into not affecting the structure that dust drops in dust-collecting cavity.When the part-structure of formation dust-collecting cavity is containing housing, the shell position variable of this part, the dust collection case portion separation structure of dust-collecting cavity or overall structure can be rotated, translate or dismounting conversion, effectively dust is limited in dust-collecting cavity with this, and reach the function of dust cleaning in dust-collecting cavity.
According to said structure feature, also can the rub body face of described rub body higher than the port surface of dedusting sheet and dust-break sheet, rub body face is provided with elastomer between drain pan, under naturalness, the rub body area of section of dedusting sheet port is more than rub body face area, and the rub body wall between from rub body face to dedusting sheet port is set to smooth；Described rub body is provided with rub body catch, and rub body sidewall is provided with the dust collecting mated with dedusting sheet.Owing to the rub body face of this blackboard eraser is higher than the port surface of dedusting sheet and dust-break sheet, rub body face is provided with elastomer between drain pan, this blackboard eraser is in blackboard wiping process, the position, rub body face of rub body changes, rub body face and dedusting sheet and dust-break bit end aperture position become with high, and dedusting sheet and dust-break sheet touch blackboard with rub body face is double；Now, there is gap between dedusting sheet and rub body face, dust is removed by dedusting sheet by gap；Before taking off this blackboard eraser, first dedusting sheet is pressed toward rub body place, inner side so that still the dedusting sheet on blackboard is touched mutually with edge, rub body face, the gap-closing between dedusting sheet and rub body, after the dust of gap location is removed, then this blackboard eraser is taken off from blackboard；After taking off this blackboard eraser, the port surface of dedusting sheet and dust-break sheet is ejected in rub body face, position, rub body face is restored, rub body sidewall is touched mutually with dedusting sheet, original space closure between rub body and dedusting sheet, whole chamber closes, and dust is collected, wherein dust major part is at dedusting intracavity, and fraction is at dedusting sheet port；The design of this collection device is determined according to practical situation, when rub body sidewall be provided with the dust collecting with dedusting sheet port match be dust pipe box time, being pressed toward inner side by its dedusting sheet, make the dust of dedusting sheet port enter in dust pipe box, the dust in dust pipe box finally focuses in dust-collecting cavity；When in dust-collecting cavity, dust reaches a certain amount of, then the dust in dust-collecting cavity is cleared up.Meanwhile, nuzzling up in title taking off this blackboard, this part rub body wall, with from rub body face to dedusting sheet port, this part rub body wall creates slip, is set to smooth by dedusting sheet；Avoid the dust therefore landing of dedusting sheet port.Described rub body is provided with rub body catch, and the part-structure of described dust stop tab can act also as rub body catch, not only makes rub body wall become smooth, also makes rub body obtain protection so as to be unlikely to deform, and this blackboard eraser is able to long-term normal use.Above technology is to expand in former scheme, to guarantee that it is carried out more effectively.
Described check valve is set to move up and down variation, rotates variation or two ways combination variation；Described check valve is provided with friction extension rod, and the friction of described friction extension rod end is arranged, and is flexible；Described check valve is set to dust-proof falling shape；Described check valve is elastic setting.When described check valve is set to move up and down variation, junction adopts the mode inlaying movement；When check valve is set to rotate variation, junction adopts and is rotationally connected；According to actual needs, it is designed as two ways and combines the scheme of variation, it is simple to check valve regulates the opening and closing in dedusting chamber in time when this blackboard eraser moves.Preferably, being designed as by check valve when moving up and down, regardless of left and right wiping or wiping up and down, its opening and closing is by the impact of gravity.Connection angle between friction extension rod and check valve is set to variable, especially when check valve is independently arranged into rotation variation or moves up and down, mobility scale is provided with restriction, limits rotation angle range by being provided with rotation fixing point between friction extension rod and check valve；Namely by connection angle mobility scale between friction extension rod and check valve.When described check valve is provided with friction extension rod, the friction of described friction extension rod end is arranged, and is flexible；When this design contributes to this blackboard eraser along different directions wiping, friction extension rod produces the frictional force of different directions, causes that friction extension rod position can produce variation, regulates the opening and closing of check valve in time, thus accurately controlling the opening and closing in dedusting chamber.Described check valve is set to the overhead kick of dust-proof falling shape, this design just as by check valve in conjunction with dust stop tab, namely control the unlatching of check valve, further prevent the falling of dust.Described check valve is elastic setting, and when wiping, rub body produces elastic deformation, or rub body face is provided with elastomer between drain pan；When this blackboard eraser stops wiping, elastic deformation recovers, and position, rub body face uprises, and the friction extension rod on check valve does not touch mutually with blackboard, and the friction between friction extension rod and blackboard disappears.Because described check valve is elastic setting, when this blackboard eraser stops wiping, this design makes check valve return to make position, and dedusting chamber is in closure state.The concrete elastic force design that described check valve elasticity is arranged is as follows: when it stops wiping at vertical direction, check valve is returned to make position by design elastic force just, makes dedusting chamber be in closure state.
Being provided with the dust stop tab preventing dust from falling after rise in the chamber in described dedusting chamber, dust stop tab substitutes check valve, or is combined use with check valve.Described check valve or dust stop tab are used for collecting dust, and anti-dust falls after rise；Described check valve or dust stop tab design according to the prior art such as inertia, tribology principle, and its purpose is all collect dust.When this blackboard eraser moves to the left, the check valve in left side cuts out, and stops the dust of left side dedusting intracavity to shed from this dedusting intracavity；Now, right one-way valve is opened, and includes dust in and enters right side dedusting intracavity；Otherwise, then on the contrary.Owing to check valve is in continuous activity, guarantee the sealing of its setting when design so that it is not by the impact of dust, select all the other to collect dust scheme according to prior art and be used alone or be used in conjunction with in conjunction with check valve, to reach good dust removing effects.
Described dedusting sheet port is set to windshield wiper blade formula shape orientation rub body；This blackboard eraser is in blackboard wiping process, and dedusting sheet port is touched mutually with blackboard, leaves smaller gap between dedusting sheet and edge, rub body face；Check valve is located at dedusting sheet port；The dust-break sheet of described dust-collecting cavity side also can be replaced dedusting sheet, is connected with dust-collecting cavity.Because dedusting sheet plays collection dust effect, and it is less to wipe dust effect；So dedusting sheet port is set to windshield wiper blade formula shape orientation rub body, reduces the area contacted with blackboard, thus resistance when reducing wiping chalk, facilitate wiping.Dedusting sheet port is touched mutually with blackboard so that dust cannot shed.In this blackboard eraser wiping process, a dust part for erasing is stayed on rub body by rub body, and major part is all stayed on the blackboard at edge, rub body face, and the dust stayed will enter dedusting chamber by gap smaller between dedusting sheet and edge, rub body face.If dedusting sheet and rub body are combined closely, dust then cannot be introduced into dedusting chamber.Check valve be located at dedusting sheet port contribute to dust can more quickly enter dedusting intracavity, to guarantee dust removing effects.The dust-break sheet of described dust-collecting cavity side also can be replaced dedusting sheet, is connected with dust-collecting cavity, it can be used as a part for dust-collecting cavity, is simultaneously used for dedusting.Now, dedusting sheet place is also provided with check valve, and dust-collecting cavity also functions to collect the effect of dust simultaneously.
Described dust-break sheet also has magnetic and flexibility；Dust-break sheet is close in wiping phase with edge, rub body face, and dust-break sheet and dedusting sheet are with high, and Guan Bi is around rub body.Dedusting sheet, dust-break sheet are held concurrently and are designed by magnetic elastomeric material, and dust-break sheet is consistent with dedusting sheet, and it also has magnetic and the flexible better effects if making wiping, with blackboard adhesive, can not make dust overflow；Because its contact area is little, and it is flexible, so the wiping of this blackboard eraser will not be hindered.This blackboard eraser is in blackboard wiping process, and dust-break sheet is close in wiping phase with edge, rub body face so that be absent from gap between dust-break sheet and rub body；If also having gap between dust-break sheet and rub body, this gap is likely to also leave dust.Because dust-break sheet touches blackboard with rub body face is double, adding dust-break sheet with dedusting sheet with high, and Guan Bi is around rub body, the dust wiped by rub body can be subject to the complete barrier of dust-break sheet and dedusting sheet and cannot overflow, and is included in dedusting chamber by dedusting sheet the most at last.Otherwise, part dust still can shed；So this design makes dust removing effects better.
The dust collection case portion separation structure of described dust-collecting cavity or overall construction design rotate, translate or dismounting conversion.Namely when the part-structure of described composition dust-collecting cavity or overall structure are housing, the position of this partial shell is by rotating, translate or dismounting conversion；The making structure of dust-collecting cavity has multiple, designs according to actual needs so that the dust in dust-collecting cavity is cleared up.
Described dust-break sheet, dedusting sheet are connected to housing or rub body.Described dust-break sheet, described dedusting sheet connect according to the practical situation of this blackboard eraser, it does not have strict requirement, are connected with housing for dedusting sheet preferably, and dust-break sheet is connected with housing and mutually close with rub body；As long as reaching described dust-break sheet and described dedusting sheet being fixed, and play corresponding function.The rub body face of described rub body is to housing between at the bottom of shell or is provided with rub body pressing position device for limiting in rub body, and rub body is setting design.Owing to existing rub body is when wiping, generally all producing deformation, in order to make not produce impact by the difference of pressure, therefore be provided with rub body pressing position device for limiting in this blackboard eraser, this device is located in rub body or is located on housing, or designs according to practical situation；To guarantee in blackboard wiping process, the rub body face of this blackboard eraser body and dedusting sheet and dust-break sheet is double touches blackboard.Rub body can deform after long-term use, because the periphery of rub body wall is provided with rub body catch as setting design, it is prevented that the deformation of rub body, further ensures that the existence in gap between dedusting sheet, to guarantee that above-mentioned functions is able to normal use.In addition, also with iron wire, rub body edge can be shaped；As long as shaping effect can be reached, design according to prior art.
Described rub body is divided into wiping face and rub body matrix, and detachable between the two；Between described rub body and described housing detachably.In actually used situation, this blackboard eraser only has rub body face to serve the effect of wiping at blackboard wiping, and rub body face is fragile, but internal rub body damaged condition is lighter；Therefore rub body is divided into wiping face and rub body matrix, and detachable between the two.When rub body face cannot be further continued for using, only need to change rub body face and be combined can be continuing with rub body matrix again；The material in rub body matrix and rub body face is preferentially chosen according to existing situation.In addition, owing to existing rub body is when wiping, there is bigger deformation in rub body, now except rub body, remainder is still intact after using a period of time, so changing this rub body, may continue to use.
Compared with prior art, the present invention is by arranging check valve or dust stop tab so that the dust under wiping is received into dedusting intracavity, and will not therefrom drop out；Magnetic dedusting sheet, and dust-break sheet adsorbs mutually with blackboard so that dust cannot spill from dedusting sheet, this scheme will effectively by dust collection in dust-collecting cavity.Additionally, rub body face described in this blackboard eraser is higher than the scheme of dedusting sheet and the port surface of dust-break sheet, further such that the dust of gap location is all removed, its scheme is as the further expansion of former scheme, to guarantee to reach result of use.Meanwhile, because creating suction between this blackboard eraser and blackboard, so that people reduces the pressure of inwardly applying when erasing the board.Also can design dedusting sheet, and between the magnetic of dust-break sheet and blackboard, produce suction so that when translating this blackboard eraser, just the writing on blackboard be wiped.Between magnetic and the blackboard of design dedusting sheet, produce suction, when making this blackboard eraser not fall from blackboard, also allow for finding this blackboard eraser.Though adding suction between this blackboard eraser and blackboard, the wiping of this blackboard eraser can be hindered, but as long as the actual fabrication situation according to this blackboard eraser, regulating the size of magnetic force so that it is reach to be suitable for the equilibrium point of use.Described design simultaneously both can by the dust backstop of erasing and be stored in dedusting intracavity, without hindering the slip on blackboard of this blackboard eraser, easy to use, good dedusting effect.
Present invention efficiently solves the problem that dust disperses everywhere, contribute to teaching and carry out better, protection teachers and students' is healthy.Additionally, the present invention has simple in construction, cost is low, and volume is little, easy to use, the feature of long service life.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention one plan structure schematic diagrams.
Fig. 2 is a part of sectional structure schematic diagrams of embodiments of the invention.
Fig. 3 is that Fig. 2 arranges check valve schematic arrangement schematic diagram.
The check valve that Fig. 4 is Fig. 2 changes structural representation up and down, and in figure, arrow is the direction of motion.
Fig. 5 is structural representation after the check valve of Fig. 4 moves in the direction of the arrow.
The check valve that Fig. 6 is Fig. 2 rotates variation structural representation, and in figure, arrow is the direction of motion.
Fig. 7 is structural representation after the check valve of Fig. 6 moves in the direction of the arrow.
The check valve that Fig. 8 is Fig. 2 changes combination rotation variation structural representation up and down, and in figure, arrow is the direction of motion.
Fig. 9 is structural representation after the check valve of Fig. 8 moves in the direction of the arrow.
Figure 10 is that Fig. 2 arranges dust stop tab schematic arrangement schematic diagram.
Figure 11 is embodiments of the invention two partial cross structural representations.
Figure 12 is another view of Figure 11.
Figure 13 is embodiments of the invention two magnified partial view.
Figure 14 is another structural representation of dedusting sheet of the present invention.
Figure number and title: 1, housing, 2, rub body, 3, dust-break sheet, 4, dedusting sheet, 5, check valve, 51, friction extension rod, 6, dedusting chamber, 7, dust-collecting cavity, 8, dust pipe box, 9, dust stop tab, 10, gap, 11, dust import department.
Detailed description of the invention
In conjunction with accompanying drawing, structure and use to the present invention are further described.As shown in Fig. 1～Figure 14, this blackboard eraser is made up of housing 1, rub body 2, dust-break sheet 3, dedusting sheet 4, check valve 5, friction extension rod 51, dedusting chamber 6, dust-collecting cavity 7, also dust pipe box 8 can be provided with, check valve or replace with dust stop tab 9, rub body is fixed in housing, and before and after rub body, both sides are provided with dust-break sheet, and the left and right sides is provided with dedusting sheet, dedusting sheet port towards rub body, dedusting sheet place be provided with move back and forth with rub body and the check valve of in time folding；Described check valve is provided with friction extension rod；Described dedusting sheet has magnetic and flexibility, dedusting sheet and this blackboard eraser adhesive；This blackboard eraser is in blackboard wiping process, and the double blackboard that touches of dust-break sheet, dedusting sheet, rub body, dust-break sheet is touched with edge, rub body face, and namely dust-break sheet is close in wiping phase with edge, rub body face；This blackboard eraser left and right sides is provided with dedusting chamber, and rear side is provided with dust-collecting cavity.
The structure of embodiment is specific as follows: embodiment one as shown in FIG. 1 to 3, this blackboard eraser is provided with dust-collecting cavity as shown in Figure 1, the dust collection case portion separation structure of dust-collecting cavity or overall structure are housing, and housing, by rotating, translate or dismounting conversion, makes up to the purpose of cleaning；Periphery connected mode between dedusting sheet and dust-break sheet, 45 degree connect or 90 degree of connections, determine according to practical situation.This blackboard eraser is crossed in title at blackboard wiping, rub body face and dedusting sheet, and dust stop tab port is touched mutually with blackboard jointly, there is gap 10 between rub body face and dedusting sheet, so that dust entrance dedusting intracavity.Dedusting sheet is set to windshield wiper blade formula shape as shown in Figure 2, dedusting sheet port also can be provided with the check valve preventing dust from falling after rise, and check valve is located at dedusting sheet port, and described check valve adopts the mode moved up and down, control the opening and closing in dedusting chamber, to improve dust removing effects；This enlarged drawing describes this blackboard eraser under different mobile status as shown in Figure 3, and check valve can present states different up and down, and dedusting chamber can form opening and closing structure, it is ensured that the realization of dust removing effects；As shown in Fig. 4～Fig. 9 when this blackboard eraser is along different directions wiping, friction extension rod produces the frictional force of different directions, friction extension rod position can produce variation, result in check valve change up and down or rotate variation, and two ways combines variation, make the continuous opening and closing of dust import department 11, it is achieved thereby that the opening and closing in dedusting chamber.Dust stop tab is provided with overhead kick as shown in Figure 10, has both prevented the falling of dust, plays again the protection to rub body, it is prevented that its deformation, strengthens dust removing effects.
Such as Figure 11～embodiment illustrated in fig. 13 two, this blackboard eraser remaining design is constant, also can mutually replace between dust stop tab and the check valve of this embodiment.Only the rub body face of rub body is higher than the port surface of dedusting sheet and dust-break sheet；Rub body face is provided with elastomer between drain pan, and under naturalness, the rub body area of section of dedusting sheet port is more than rub body face area；Rub body wall between from rub body face to dedusting sheet port is set to smooth, and described rub body is provided with rub body catch；Rub body sidewall is provided with the dust collecting mated with dedusting sheet, and this collection device is dust pipe box.Rub body is no longer pressed by this blackboard eraser toward blackboard side, also this blackboard eraser is not moved, namely before taking off from blackboard, first the dedusting sheet of this blackboard eraser is pressed toward rub body place, inner side, the dedusting sheet of this blackboard eraser made still on blackboard is touched mutually with rub body face, gap-closing between dedusting sheet and rub body, after the dust of gap location is removed by dedusting sheet, then takes off this blackboard eraser from blackboard.After taking off this blackboard eraser, the port surface of dedusting sheet and dust-break sheet is ejected in rub body face, position, rub body face is restored, owing to the rub body area of section of dedusting sheet port is more than rub body face area, rub body sidewall is touched mutually with dedusting sheet, original space closure between rub body and dedusting sheet, the whole chamber Guan Bi in dedusting chamber, dust major part is at dedusting intracavity, and fraction is at dedusting sheet port.When rub body sidewall is provided with and the dust collecting of dedusting sheet port match, this dust collecting is determined according to practical situation, preferably it is set to dust pipe box.After taking off this blackboard eraser, its dedusting sheet is pressed toward inner side, make the dust on dedusting sheet port enter in the dust collecting mated with dedusting sheet.It is set to the dedusting sheet that original radian designs as shown in figure 14 be made up of vertical portion and gradient part, plays dust removing effects equally.
In above example, in chamber, also can be provided with the dust stop tab preventing dust from falling after rise, or dust stop tab substitutes check valve, or be combined use with check valve；Dust-break sheet also has magnetic and flexibility；Described dust-break sheet, dedusting sheet are connected to housing or rub body；The rub body face of rub body is provided with rub body pressing position device for limiting between at the bottom of shell, and rub body is setting design.Cleaning and the reusing of this blackboard eraser for ease of rub body, rub body is divided into wiping face and rub body matrix, and detachable between the two；Between described rub body and described housing detachably.
Also multiple different design is had respectively in conjunction with rub body, flexible sheets, dust-break sheet, check valve, friction extension rod, dust-collecting cavity described in prior art according to such scheme.Rub body also has following design: 1, the connection between rub body and housing is set to the prior aries such as screens and connects fixing；2, the method that the rub body face of rub body or rub body pedestal also can adopt bonding, as: combined by spongy layer, sealing coat, adhesive layer；3, rub body has wiping dust and the effect of bonding dust, designs different rub body structure, material or shape according to actual needs.As: rub body is wiped dirt, a kind of dust bi-material, connection of being separated by by one；Rub body material also can adopt the floss band with dust blowing effect；4, rub body is provided with rub body lid, makes dust not leak.
Dedusting sheet and dust-break sheet also have following design: 1, dedusting sheet and dust-break sheet are set to flexure plane, or are set to inclined-plane；2, dedusting sheet and dust-break sheet are set to flexibility, and are provided with regulatory region, and its port height and angle are set to scalable, and port lifts with the lifting of rub body, and the direction of adjusting angle is certain；General to inward side to variation.When position, rub body face changes, dedusting sheet or still be able between dust-break sheet and blackboard close contact；Now, the rub body face of rub body also can not set rub body pressing position device for limiting between at the bottom of shell.
Check valve and friction extension rod also have following design: 1, vertical design between friction extension rod and check valve, and friction extension rod is located between two ends or the two ends of check valve, and with rub body matching design；Namely design one or two, symmetrically or non-symmetrically, hold concurrently can determine according to practical situation；Preferably, two friction extension rod symmetric designs are on the check valve of every side.2, in order to make friction extension rod play its corresponding function, rub body is provided with elasticity, or the height of friction extension rod is higher than the height in rub body face；As long as there being frictional force during wiping, during not wiping, there is no frictional force.3, friction extension rod both can be set to variable with the connection angle mode of check valve, also can be set to not change.Preferably, when check valve moves up and down or rotates variation, angle is set to variable connection between；Not only, when check valve moves up and down but also rotates variation, variable-angle is dynamic or fixing connect between.
Dust-collecting cavity also has following design: 1, is provided with in dust-collecting cavity and leads dirt sheet, dust is made to be guided in collection chamber, dust inlet place as dust-collecting cavity, the dust-break sheet design at dust-collecting cavity place does not affect the landing of dedusting intracavity dust, the baffle plate that Open Side Down it is provided with, it is prevented that the dust in dust-collecting cavity falls after rise in dust-collecting cavity；2, the structure of dust-collecting cavity, size, shape are determined according to practical situation, are set to semicircular structure or rectangle structure such as dust-collecting cavity.
The technological means of the present invention; and the technical scope of the unrestricted present invention; the present invention is made conspicuously improved in conjunction with known general knowledge by those skilled in the art; as being provided with wet type rub body in the structure of this blackboard eraser, change this blackboard eraser profile, set up scalable, dismounting or folding handle, be provided with the structure of little article storage, the housing of blackboard eraser both sides or dedusting sheet and be provided with the hand-held designs of frictional layer or finger gripping stricture of vagina or groove etc., change the structure in conjunction with existing similar blackboard erasers such as shapes of dedusting sheet and dust-break sheet, fall within the technical protection scope of the present invention.
Claims (9)
1. a simple and easy dust-removing blackboard eraser, this blackboard eraser includes housing (1), rub body (2), dust-break sheet (3), dedusting sheet (4), check valve (5), dedusting chamber (6), dust-collecting cavity (7), described rub body (2) is fixed in housing (1), before and after rub body (2), both sides are provided with dust-break sheet (3), the left and right sides is provided with dedusting sheet (4), and described dedusting sheet (4) port is towards rub body (2)；It is characterized in that described dedusting sheet (4) place be provided with move back and forth with rub body (2) and the check valve (5) of in time folding, described dedusting sheet (4) has magnetic and flexibility；This blackboard eraser is in blackboard wiping process, and rub body (2), dust-break sheet (3), dedusting sheet (4) is double touches blackboard；This blackboard eraser left and right sides is provided with dedusting chamber (6), and rear side is provided with dust-collecting cavity (7)；Described check valve (5) is set to move up and down variation, rotates variation or two ways combination variation；Described check valve (5) is provided with friction extension rod (51), and the friction of described friction extension rod end is arranged, and is flexible；Described check valve (5) is set to dust-proof falling shape；Described check valve (5) is elastic setting.
2. simple and easy dust-removing blackboard eraser according to claim 1, it is characterized in that the rub body face of described rub body (2) port surface higher than dedusting sheet (4) and dust-break sheet (3), rub body face is provided with elastomer between drain pan, under naturalness, the rub body area of section of dedusting sheet port is more than rub body face area, and the rub body wall between from rub body face to dedusting sheet (4) port is set to smooth；Described rub body (2) is provided with rub body catch, and rub body sidewall is provided with and the dust collecting of dedusting sheet (4) port match.
3. simple and easy dust-removing blackboard eraser according to claim 1, it is characterized in that in the chamber of described dedusting chamber (6), being provided with the dust stop tab (9) preventing dust from falling after rise, dust stop tab substitutes check valve (5), or combines use with check valve (5).
4. simple and easy dust-removing blackboard eraser according to claim 1, it is characterised in that described dedusting sheet (4) port is set to windshield wiper blade formula shape orientation rub body (2)；This blackboard eraser is in blackboard wiping process, and dedusting sheet (4) port is touched mutually with blackboard, leaves smaller gap (10) between dedusting sheet (4) and edge, rub body face；Check valve (5) is located at dedusting sheet (4) port；The dust-break sheet of described dust-collecting cavity side also can be replaced dedusting sheet, is connected with dust-collecting cavity.
5. simple and easy dust-removing blackboard eraser according to claim 1, it is characterised in that described dust-break sheet (3) also has magnetic and flexibility；Dust-break sheet (3) is close in wiping phase with edge, rub body face, and dust-break sheet (3) and dedusting sheet (4) are with high, and Guan Bi is around rub body (2).
6. simple and easy dust-removing blackboard eraser according to claim 1, it is characterised in that the dust collection case portion separation structure of described dust-collecting cavity (7) or overall structure are set to rotate, translate or dismounting conversion.
7. simple and easy dust-removing blackboard eraser according to claim 1, it is characterized in that described dust-break sheet (3), dedusting sheet (4) are connected to housing (1) or rub body (2), the rub body face of rub body (2) is provided with rub body (2) pressing position device for limiting between at the bottom of shell, and rub body (2) is setting design.
8. simple and easy dust-removing blackboard eraser according to claim 1, it is characterised in that described rub body (2) is divided into wiping face and rub body (2) matrix, and detachable between the two；Between described rub body (2) and described housing (1) detachably.
9. the using method of simple and easy dust-removing blackboard eraser according to claim 2, it is characterized in that this blackboard eraser is in blackboard wiping process, the position, rub body face of rub body (2) changes, rub body face and dedusting sheet (4) and dust-break sheet (3) port surface position become with high, and dedusting sheet (4) and dust-break sheet (3) touch blackboard with rub body face is double；Now, there is gap (10) between dedusting sheet (4) and rub body face, dust is removed by dedusting sheet (4) by gap (10)；Before taking off this blackboard eraser, first dedusting sheet (4) is pressed toward rub body (2) place, inner side, the dedusting sheet (4) made still on blackboard is touched mutually with edge, rub body face, gap (10) Guan Bi between dedusting sheet (4) and rub body (2), after the dust at gap (10) place is removed, then this blackboard eraser is taken off from blackboard；After taking off this blackboard eraser, the port surface of dedusting sheet (4) and dust-break sheet (3) is ejected in rub body face, position, rub body face is restored, both rub body sidewall and dedusting sheet (4) are touched mutually, between rub body (2) and dedusting sheet (4), original gap (10) are closed, and whole chamber closes, and dust is collected, wherein dust major part is in dedusting chamber (6), and fraction is at dedusting sheet (4) port；When rub body wall be provided with the dust collecting with dedusting sheet (4) port match be dust pipe box (8) time, its dedusting sheet (4) is pressed toward inner side, the dust making dedusting sheet (4) port enters in dust pipe box (8), and the dust in dust pipe box (8) finally focuses in dust-collecting cavity (7)；When in dust-collecting cavity (7), dust reaches a certain amount of, then the dust in dust-collecting cavity is cleared up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410098552.0A CN103895427B (en) | 2014-02-25 | 2014-03-14 | Simple and easy dust-removing blackboard eraser and using method thereof |
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410064180.X | 2014-02-25 | ||
| CN201410064180 | 2014-02-25 | ||
| CN201410064180X | 2014-02-25 | ||
| CN201420081853 | 2014-02-25 | ||
| CN2014200818538 | 2014-02-25 | ||
| CN201420081853.8 | 2014-02-25 | ||
| CN201410098552.0A CN103895427B (en) | 2014-02-25 | 2014-03-14 | Simple and easy dust-removing blackboard eraser and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103895427A CN103895427A (en) | 2014-07-02 |
| CN103895427B true CN103895427B (en) | 2016-06-29 |
Family
ID=50987141
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420118221.4U Withdrawn - After Issue CN203792987U (en) | 2014-02-25 | 2014-03-14 | Simple dust-removing blackboard eraser |
| CN201410098552.0A Expired - Fee Related CN103895427B (en) | 2014-02-25 | 2014-03-14 | Simple and easy dust-removing blackboard eraser and using method thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420118221.4U Withdrawn - After Issue CN203792987U (en) | 2014-02-25 | 2014-03-14 | Simple dust-removing blackboard eraser |
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| Country | Link |
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| CN (2) | CN203792987U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203792987U (en) * | 2014-02-25 | 2014-08-27 | 陈浩 | Simple dust-removing blackboard eraser |
| CN106409065A (en) * | 2015-11-24 | 2017-02-15 | 华巧波 | Multifunctional teaching aid having convenient-to-detach hairbrush |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3986224A (en) * | 1975-05-16 | 1976-10-19 | Yang Teh Tsao | Eraser with dust-collecting means |
| CN2044213U (en) * | 1988-12-23 | 1989-09-13 | 黄洪全 | Open and close type dust-proof blackboard erazer |
| CN2918088Y (en) * | 2006-05-16 | 2007-07-04 | 石鼎福 | Dust absorption blackboard |
| CN201342887Y (en) * | 2008-12-06 | 2009-11-11 | 李政阳 | Dustproof blackboard eraser |
| CN103434315A (en) * | 2013-07-11 | 2013-12-11 | 陈浩 | Dust-proof blackboard eraser and application method thereof |
| CN103465698A (en) * | 2013-08-28 | 2013-12-25 | 陈浩 | Dust collecting blackboard eraser and application method thereof |
| CN203427505U (en) * | 2013-07-08 | 2014-02-12 | 周宗元 | Sealing type dust-free chalk blackboard eraser |
| CN203792987U (en) * | 2014-02-25 | 2014-08-27 | 陈浩 | Simple dust-removing blackboard eraser |
-
2014
- 2014-03-14 CN CN201420118221.4U patent/CN203792987U/en not_active Withdrawn - After Issue
- 2014-03-14 CN CN201410098552.0A patent/CN103895427B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3986224A (en) * | 1975-05-16 | 1976-10-19 | Yang Teh Tsao | Eraser with dust-collecting means |
| CN2044213U (en) * | 1988-12-23 | 1989-09-13 | 黄洪全 | Open and close type dust-proof blackboard erazer |
| CN2918088Y (en) * | 2006-05-16 | 2007-07-04 | 石鼎福 | Dust absorption blackboard |
| CN201342887Y (en) * | 2008-12-06 | 2009-11-11 | 李政阳 | Dustproof blackboard eraser |
| CN203427505U (en) * | 2013-07-08 | 2014-02-12 | 周宗元 | Sealing type dust-free chalk blackboard eraser |
| CN103434315A (en) * | 2013-07-11 | 2013-12-11 | 陈浩 | Dust-proof blackboard eraser and application method thereof |
| CN103465698A (en) * | 2013-08-28 | 2013-12-25 | 陈浩 | Dust collecting blackboard eraser and application method thereof |
| CN203792987U (en) * | 2014-02-25 | 2014-08-27 | 陈浩 | Simple dust-removing blackboard eraser |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103895427A (en) | 2014-07-02 |
| CN203792987U (en) | 2014-08-27 |
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Inventor after: Huang Xiaojuan Inventor before: Chen Hao Inventor before: Fu Mengsha Inventor before: Chen Jinlong Inventor before: Ye Meijun Inventor before: Chen Qiaoli Inventor before: Chen Zhiwei Inventor before: Liu Lijun Inventor before: Jiang Tao |
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Effective date of registration: 20170913 Address after: 065000 Langfang city of Hebei province Sanhe street Yanjiao Development Zone in the city to run 9 Xinyuan Building 5 unit 2501 room Patentee after: Huang Xiaojuan Address before: 315175, Zhejiang, Ningbo province Yinzhou District Gaoqiao Town reed village, Xueyuan Road 1, Ningbo Dahongying University, School of economics and management, 11, marketing 5 Patentee before: Chen Hao |
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Granted publication date: 20160629 Termination date: 20180314 |