CN203792987U - Simple dust-removing blackboard eraser - Google Patents
Simple dust-removing blackboard eraser Download PDFInfo
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- CN203792987U CN203792987U CN201420118221.4U CN201420118221U CN203792987U CN 203792987 U CN203792987 U CN 203792987U CN 201420118221 U CN201420118221 U CN 201420118221U CN 203792987 U CN203792987 U CN 203792987U
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- dust
- rub body
- sheet
- dedusting
- blackboard eraser
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Abstract
The utility model relates to a simple dust-removing blackboard eraser. An eraser body of the blackboard eraser is fixed in a shell, the front side and the rear side of the eraser body are respectively provided with a dust blocking piece, the left side and the right side of the eraser body are respectively provided with a dust removing piece, and the port of each dust removing piece faces the eraser body. The simple dust-removing blackboard eraser is characterized in that each dust removing piece which is provided with a check valve moving back and forth along with the eraser body to be opened and closed timely is magnetic and flexible; while the blackboard eraser is used for erasing a blackboard, the eraser body, the dust blocking pieces and the dust removing pieces make contact with the blackboard, and a small gap is formed between each dust removing piece and the edge of the eraser body surface; each check valve is arranged on the port of the corresponding dust removing piece, provided with a friction extending rod and an inverted hook and elastically arranged; the left side and the right side of the blackboard eraser are respectively provided with a dust removing cavity, and the rear side of the blackboard eraser is provided with a dust collecting cavity. In addition, an elastic body can be arranged between the eraser body surface of the blackboard eraser and a bottom shell, and the dust blocking pieces are arranged to replace the check valves. According to the simple dust-removing blackboard eraser, dust can be effectively controlled in the dust collecting cavity and prevented from flying all around, and development of teaching activities is facilitated.
Description
Technical field
The utility model relates to realia field, specifically a kind of simple and easy dust-removing blackboard eraser.
Background technology
Blackboard eraser is essential in education activities, and existing blackboard is formed through disposable compacting by high polymer alloy particle and epoxy resin substantially, can inhale mutually with magnetisable material.Blackboard eraser is when erasing chalk writing at present, and the phenomenon that generally can cause dust to fly upward everywhere, affects teaching, contaminated environment, and harm teachers and students are healthy.In order to solve problems, on market, also there is multiple electric dust absorption blackboard eraser, but because its price is higher, easily break, need charging, there are the problems such as noise, and are difficult to be promoted.Meanwhile, other blackboard eraser dust absorbing structures are comparatively simple, use more for convenience; This type of blackboard eraser is as the application number 201320298591.6 of Chinese patent literature publication, utility model title " a kind of anti-dust eraser ", November 6 2013 Granted publication day.Though above-mentioned blackboard eraser improves existing wiping blackboard structure, its dust removing effects is still not obvious, and comes with some shortcomings, therefore need further improvement.
Summary of the invention
The utility model dust when overcoming ordinary blackboard eraser wiping disperse everywhere and electric blackboard eraser price higher, troublesome poeration, the problem of easily breaking, provides a kind of simple and easy dust-removing blackboard eraser.This blackboard eraser is included the dust of wiping in dedusting chamber in, and the dust in dedusting chamber is focused in dust-collecting cavity, and not only simple in structure, cost is low, easy to use, and the phenomenon of effectively having avoided dust to disperse everywhere, thereby makes teaching environment unaffected.Its objective is and be achieved through the following technical solutions.
A kind of simple and easy dust-removing blackboard eraser, this blackboard eraser comprises 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 is provided with this blackboard eraser moves around and the check valve of in time folding; Left side and right one-way valve can move around and one hold one and close with this blackboard eraser, and dust can only be entered in dedusting chamber, and the dedusting chamber of can not being scattered; Meanwhile, between dedusting sheet and rub body face edge, leave small gap, dust enters in dedusting chamber by gap.Described dedusting sheet has magnetic and flexibility, thereby is convenient to dedusting sheet and this blackboard eraser adhesive, makes the dust dedusting sheet that can not be scattered; This blackboard eraser is in blackboard wiping process, rub body, dust-break sheet, the double blackboard that touches of dedusting sheet, 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 with dedusting sheet and dust-break sheet port is common and blackboard is touched mutually, has guaranteed 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 larger, and is convenient to dedusting.Rear side is provided with dust-collecting cavity, and dust-collecting cavity has certain storage area, and the dust in dedusting chamber is because Action of Gravity Field is fallen in dust-collecting cavity; Meanwhile, the feature in the dust removal combined chamber of design of rear end dust-break sheet, is designed to not affect dust and is dropped to the structure in dust-collecting cavity.When the part-structure of formation dust-collecting cavity contains housing, the shell position variable of this part, can, by the dust collection case portion separation structure of dust-collecting cavity or overall structure rotation, translation or dismounting conversion, with this, effectively dust be limited in dust-collecting cavity, and reach the function of dust cleaning in dust-collecting cavity.
According to said structure feature, also rub body face that can described 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, under nature, the rub body area of section of dedusting sheet port is greater than rub body face area, from rub body face to the rub body wall between dedusting sheet port, is made as smooth; Described rub body is provided with rub body catch, and rub body sidewall is provided with the dust collecting mating with dedusting sheet.Due to the rub body face of this blackboard eraser port surface higher than 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 rub body face position of rub body changes, rub body face and dedusting sheet and dust-break sheet port surface position become with high, the double blackboard that touches of dedusting sheet and dust-break sheet and rub body face; Now, between dedusting sheet and rub body face, have gap, 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, the still dedusting sheet on blackboard is touched mutually, the gap-closing between dedusting sheet and rub body with rub body face edge, after the dust of gap location is removed, then this blackboard eraser is taken off from blackboard; After taking off this blackboard eraser, rub body face ejects the port surface of dedusting sheet and dust-break sheet, restore rub body face position, rub body sidewall is touched mutually with dedusting sheet, original space closure between rub body and dedusting sheet, whole chamber is closed, and dust is collected, wherein dust major part is in dedusting chamber, and fraction is at dedusting sheet port; The design consideration actual conditions of this gathering-device and determining, when rub body sidewall is provided with dust collecting with dedusting sheet port match and is control of dust pipe box, its dedusting sheet is pressed toward inner side, the dust of dedusting sheet port is entered in control of dust pipe box, and the dust in control of dust pipe box finally focuses in dust-collecting cavity; When in dust-collecting cavity, dust reaches a certain amount of, then by the dust cleaning in dust-collecting cavity., cross in title taking off this blackboard eraser meanwhile, dedusting sheet with from rub body face to this part rub body wall of dedusting sheet port, produced slip, this part rub body wall is made as smooth; Dust so and the landing of dedusting sheet port have been avoided.Described rub body is provided with rub body catch, and the part-structure of described dust stop tab also can be used as rub body catch, not only makes rub body wall become smooth, also makes rub body obtain protection and makes it not yielding, and this blackboard eraser is able to long-term normal use.Above technology is to expand in former scheme, more effective to guarantee its implementation.
Described check valve is made as and moves up and down change, rotation change or two kinds of modes in conjunction with change; Described check valve is provided with friction extension rod, and the friction of described friction extension rod end arranges, and is flexible; Described check valve is made as the dustproof shape that falls after rise; Described check valve is elasticity setting.Described check valve is made as while moving up and down change, and junction adopts the mobile mode of inlaying; When check valve is made as rotation change, junction adopts and is rotationally connected; According to actual needs, be designed to two kinds of modes in conjunction with the scheme of change, be convenient to check valve and when this blackboard eraser moves, regulate in time the switching in dedusting chamber.Preferably, when check valve is designed to move up and down, regardless of left and right wiping or upper and lower wiping, it opens and closes the impact that is not subject to gravity.Connection angle between friction extension rod and check valve is made as variable, when especially check valve is made as separately rotation change or moves up and down, mobility scale is provided with restriction, between friction extension rod and check valve, by being provided with rotation fixing point, limits rotation angle range; Rub between extension rod and check valve by connection angle mobility scale.When described check valve is provided with friction extension rod, the friction of described friction extension rod end arranges, and is flexible; This is designed with while helping this blackboard eraser along different directions wiping, and friction extension rod produces the frictional force of different directions, and the extension rod position that causes rubbing can produce change, regulates in time the switching of check valve, thereby accurately controls the switching in dedusting chamber.Described check valve is made as the dustproof overhead kick that falls shape after rise, this design just as by check valve in conjunction with dust stop tab, controlled the unlatching of check valve, further prevented again the falling of dust.Described check valve is elasticity 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 rub body face position 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 elasticity setting, when this blackboard eraser stops wiping, this design makes check valve return to closing position, and dedusting chamber is in closure state.The concrete elastic force design that described check valve elasticity arranges is as follows: when it is when vertical direction stops wiping, design elastic force returns to closing position by check valve just, makes dedusting chamber in closure state.
In the chamber in described dedusting chamber, be provided with the dust stop tab that prevents that dust from falling after rise, dust stop tab substitutes check valve, or is combined 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 prior aries such as inertia, tribology principles, and its object is all to collect dust.When this blackboard eraser moves to the left, the check valve in left side cuts out, and stops the dust in dedusting chamber, left side to shed in this dedusting chamber; Now, right one-way valve is opened, and includes dust in and enters in dedusting chamber, right side; Otherwise, contrary.Because check valve is in continuous activity, when design, guarantee the sealing of its setting, make its impact that is not subject to dust, according to prior art, select all the other to collect dust scheme and use separately or jointly use in conjunction with check valve, to reach good dust removing effects.
Described dedusting sheet port is made as 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, between dedusting sheet and rub body face edge, leaves smaller gap; Check valve is located at dedusting sheet port; The dust-break sheet of described dust-collecting cavity side is also replaceable is dedusting sheet, is connected with dust-collecting cavity.Because dedusting sheet plays, collect dust effect, and it is less to wipe dust effect; So dedusting sheet port is made as windshield wiper blade formula shape orientation rub body, reduce the area that contacts with blackboard, thereby the resistance while reducing wiping chalk facilitates wiping.Dedusting sheet port is touched mutually with blackboard, and dust cannot be shed.In this blackboard eraser wiping process, rub body is stayed a dust part of wiping on rub body, and major part is all stayed on the blackboard at rub body face edge, and the dust staying enters dedusting chamber by the gap by smaller between dedusting sheet and rub body face edge.If dedusting sheet and rub body are combined closely, dust cannot enter dedusting chamber.Check valve is located at dedusting sheet port and contributes to dust manyly to enter quickly in dedusting chamber, to guarantee dust removing effects.The dust-break sheet of described dust-collecting cavity side is also replaceable is dedusting sheet, is connected with dust-collecting cavity, and the part using it as dust-collecting cavity, simultaneously for dedusting.Now, dedusting sheet place is also provided with check valve, and dust-collecting cavity also plays the effect of collecting dust simultaneously.
Described dust-break sheet also has magnetic and flexibility; Dust-break sheet and rub body face edge are mutually close when wiping, and dust-break sheet and dedusting sheet are with high, and closed hoop 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 that makes wiping, can with blackboard adhesive, do not make dust overflow; Because its contact area is little, and be flexible, so can not hinder the wiping of this blackboard eraser.This blackboard eraser is in blackboard wiping process, and dust-break sheet and rub body face edge are mutually close when wiping, makes not exist between dust-break sheet and rub body gap; If also gapped between dust-break sheet and rub body, dust may be also left in this gap.Because of dust-break sheet and the double blackboard that touches of rub body face, add dust-break sheet and dedusting sheet with high, and closed hoop is around rub body, the dust of being wiped by rub body can be subject to dust-break sheet and comprehensively stopping of dedusting sheet and cannot overflow, and is included in dedusting chamber the most at last by dedusting sheet.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 rotation, translation or dismounting conversion.Part-structure or the overall structure when described composition dust-collecting cavity is housing, and the position of this partial shell is by rotation, translation or dismounting conversion; The making structure of dust-collecting cavity has multiple, designs according to actual needs, and the dust in dust-collecting cavity is cleared up.
Described dust-break sheet, dedusting sheet are connected in housing or rub body.Described dust-break sheet, described dedusting sheet connect according to the actual conditions of this blackboard eraser, there is no strict requirement, are connected preferably for dedusting sheet with housing, and dust-break sheet is connected with housing and is mutually close with rub body; As long as reach described dust-break sheet and described dedusting sheet is fixed, and play corresponding function.The rub body face of described rub body is provided with rub body pressing position device for limiting to housing between at the bottom of shell or rub body, and rub body is setting design.Because existing rub body is when the wiping, generally all can produce deformation, in order to make the difference of pressing force, do not exert an influence, so in this blackboard eraser, be provided with rub body pressing position device for limiting, this device is located in rub body or is located on housing, or designs according to actual conditions; To guarantee in blackboard wiping process, the double blackboard that touches of the rub body face of this blackboard eraser body and dedusting sheet and dust-break sheet.Rub body can distortion after long-term use, because the periphery of rub body wall is provided with rub body catch as setting design, prevents the distortion of rub body, further guarantee and dedusting sheet between the existence in gap, to guarantee that above-mentioned functions is able to normal use.In addition, also available iron wire formalizes rub body edge; As long as can reach setting effect, design according to prior art.
Described rub body is divided into wiping face and rub body matrix, and detachable between the two; Detachable between described rub body and described housing.In actual service condition, this blackboard eraser only has rub body face to play the effect of wiping at blackboard wiping, and rub body face is fragile, but inner 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 continue to use again, only need replacing rub body face to be combined with rub body matrix again and can continue to use; The material of rub body matrix and rub body face is preferentially chosen according to existing situation.In addition, because existing rub body is when the wiping, there is larger deformation after using a period of time in rub body, and now except rub body, remainder is still intact, so change this rub body, still can continue use.
Compared with prior art, the utility model, by check valve or dust stop tab are set, are received in dedusting chamber the dust under wiping, and can therefrom do not dropped out; Magnetic dedusting sheet, and dust-break sheet adsorbs mutually with blackboard, and dust cannot be spilt from dedusting sheet, this scheme will be effectively by dust collection in dust-collecting cavity.In addition, rub body face, higher than the scheme of the port surface of dedusting sheet and dust-break sheet, further makes the dust of gap location all be removed described in this blackboard eraser, and its scheme is as the further expansion of former scheme, to guarantee to reach result of use.Meanwhile, because having produced suction between this blackboard eraser and blackboard, thereby make people when erasing the board, reduce inside applied pressure.Also can design dedusting sheet, and produce suction between the magnetic of dust-break sheet and blackboard, while making this blackboard eraser of translation, just the writing on blackboard be wiped.Between the magnetic of design dedusting sheet and blackboard, produce suction, when this blackboard eraser is not fallen from blackboard, be also convenient to find this blackboard eraser.Though increased suction between this blackboard eraser and blackboard, can hinder the wiping of this blackboard eraser, as long as according to the actual fabrication situation of this blackboard eraser, regulate the size of magnetic force, make it reach the equalization point that is applicable to use.Described design simultaneously both can and be stored in dedusting chamber the dust backstop of wiping, and also can not hinder the slip of this blackboard eraser on blackboard, easy to use, good dedusting effect.
The utility model has solved the problem that dust disperses effectively everywhere, contributes to teaching to carry out better, and protection teachers and students' is healthy.In addition, the utlity model has simple in structurely, cost is low, and volume is little, easy to use, the feature of long service life.
accompanying drawing explanation
Fig. 1 is embodiment mono-plan structure schematic diagram of the present utility model.
Fig. 2 is embodiment part sectional structure schematic diagram of the present utility model.
Fig. 3 is that Fig. 2 arranges the simple structural representation of check valve.
Fig. 4 is that the check valve of Fig. 2 changes structural representation up and down, and in figure, arrow is the direction of motion.
Fig. 5 is that the check valve of Fig. 4 is along structural representation after arrow direction.
Fig. 6 is the check valve rotation change structural representation of Fig. 2, and in figure, arrow is the direction of motion.
Fig. 7 is that the check valve of Fig. 6 is along structural representation after arrow direction.
Fig. 8 is that the check valve of Fig. 2 changes up and down in conjunction with rotation change structural representation, and in figure, arrow is the direction of motion.
Fig. 9 is that the check valve of Fig. 8 is along structural representation after arrow direction.
Figure 10 is that Fig. 2 arranges the simple structural representation of dust stop tab.
Figure 11 is embodiment bis-part sectional structure schematic diagrames of the present utility model.
Figure 12 is another view of Figure 11.
Figure 13 is embodiment bis-part enlarged drawings of the present utility model.
Figure 14 is another structural representation of dedusting sheet of the present utility model.
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, control of dust pipe box, 9, dust stop tab, 10, gap, 11, dust import department.
The specific embodiment
Now by reference to the accompanying drawings, structure of the present utility model and use are further described.As shown in Fig. 1～Figure 14, this blackboard eraser is comprised 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 can be provided with control of dust pipe box 8, 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 is towards rub body, and dedusting sheet place is provided with rub body and moves around and the check valve of folding in time; 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 in blackboard wiping process, dust-break sheet, dedusting sheet, the double blackboard that touches of rub body, the touching of dust-break sheet and rub body face edge, dust-break sheet and rub body face edge are mutually close when wiping; 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 mono-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 rotation, translation or dismounting conversion, makes it to reach the object of cleaning; Periphery connected mode between dedusting sheet and dust-break sheet, 45 degree connect or 90 degree connect, and according to actual conditions, determine.This blackboard eraser is crossed in title at blackboard wiping, rub body face and dedusting sheet, and dust stop tab port touches mutually with blackboard jointly, has gap 10, so that dust enters in dedusting chamber between rub body face and dedusting sheet.Dedusting sheet is made as windshield wiper blade formula shape as shown in Figure 2, dedusting sheet port also can be provided with the check valve that prevents that dust from falling after rise, and check valve is located at dedusting sheet port, the mode that described check valve employing moves up and down, control the switching in dedusting chamber, to improve dust removing effects; This enlarged drawing has been described this blackboard eraser under different mobile status as shown in Figure 3, and check valve can present upper and lower different state, and dedusting chamber can form opening and closing structure, guarantees the realization of dust removing effects; As shown in Fig. 4～Fig. 9 when this blackboard eraser is during along different directions wiping, friction extension rod produces the frictional force of different directions, friction extension rod position can produce change, cause forming check valve and change up and down or rotate change, and two kinds of modes are in conjunction with change, dust import department 11 is is constantly opened and closed, thereby realized the switching 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, prevents its distortion, strengthens dust removing effects.
As Figure 11～embodiment illustrated in fig. 13 two, this blackboard eraser remaining design is constant, between the dust stop tab of this embodiment and check valve, also can mutually replace.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 nature, the rub body area of section of dedusting sheet port is greater than rub body face area; From rub body face to the rub body wall between dedusting sheet port, be made as smoothly, described rub body is provided with rub body catch; Rub body sidewall is provided with the dust collecting mating with dedusting sheet, and this gathering-device is control of dust pipe box.This blackboard eraser is no longer pressed rub body toward blackboard side, also do not move this blackboard eraser, before blackboard takes off, first the dedusting sheet of this blackboard eraser is pressed toward rub body place, inner side, the still dedusting sheet of the blackboard eraser of this 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, rub body face ejects the port surface of dedusting sheet and dust-break sheet, restore rub body face position, because the rub body area of section of dedusting sheet port is greater than rub body face area, rub body sidewall is touched mutually with dedusting sheet, original space closure between rub body and dedusting sheet, and the whole chamber in dedusting chamber is closed, dust major part is in dedusting chamber, and fraction is at dedusting sheet port.When rub body sidewall is provided with the dust collecting with dedusting sheet port match, this dust collecting is determined according to actual conditions, is made as preferably control of dust pipe box.After taking off this blackboard eraser, its dedusting sheet is pressed toward inner side, the dust on dedusting sheet port is entered in the dust collecting mating with dedusting sheet.As shown in figure 14 the dedusting sheet of original radian design is made as by vertical portion and gradient and is partly formed, play equally dust removing effects.
In above embodiment, in chamber, also can be provided with the dust stop tab that prevents that dust from falling after rise, or the alternative check valve of dust stop tab, or be combined with check valve; Dust-break sheet also has magnetic and flexibility; Described dust-break sheet, dedusting sheet are connected in 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.For ease of reusing of rub body cleaning and this blackboard eraser, rub body is divided into wiping face and rub body matrix, and detachable between the two; Detachable between described rub body and described housing.
According to such scheme, in conjunction with rub body, flexible sheets, dust-break sheet, check valve, friction extension rod, dust-collecting cavity described in prior art, also there is respectively multiple different design again.Rub body also has following design: 1, rub body is connected and fixed with the prior aries such as being made as screens that is connected between housing; 2, the rub body face of rub body or rub body pedestal also can adopt bonding method, as: combined by spongy layer, separation layer, adhesive layer; 3, rub body has the effect of wiping dust and bonding dust, designs according to actual needs different rub body structures, material or shape.As: rub body is by a kind of wiping dirt, a kind of control of dust bi-material, the connection of being separated by; Rub body material also can adopt the suede band with dust blowing effect; 4, rub body is provided with rub body lid, and dust is not leaked.
Dedusting sheet and dust-break sheet also have following design: 1, dedusting sheet and dust-break sheet are made as flexure plane, or are made as inclined-plane; 2, dedusting sheet and dust-break sheet are made as flexibility, and are provided with regulatory region, and its port height and angle are made as adjustable, and port is lifting with the lifting of rub body, and the direction of adjusting angle is certain; Generally direction change to the inside.When rub body face position changes, still can close contact between dedusting sheet or dust-break sheet and blackboard; Now, the rub body face of rub body also can not established 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 plane design between friction extension rod and check valve, friction extension rod is located between the two ends or two ends of check valve, and with rub body matching design; Design one or two, symmetrical or asymmetric, hold concurrently and can determine according to actual conditions; Preferably, two friction extension rod symmetric designs are on the check valve of each side.2, for the extension rod that makes to rub plays its corresponding function, rub body is provided with elasticity, or the height of friction extension rod is higher than the height of rub body face; As long as have frictional force during wiping, there is no frictional force during not wiping.3, the connection angle mode of friction extension rod and check valve both can be made as variable, also can be made as and not change.Preferably, when check valve moves up and down or rotates change, between it, angle is made as variable connection; When check valve moves up and down and rotate change, between it, variable-angle moves or is fixedly connected with.
Dust-collecting cavity also has following design: 1, in dust-collecting cavity, be provided with and lead dirt sheet, dust guiding is entered 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 dust in dedusting chamber, in dust-collecting cavity, be provided with the baffle plate that Open Side Down, prevent that the dust in dust-collecting cavity from falling after rise; 2, the structure of dust-collecting cavity, size, shape are determined according to actual conditions, as dust-collecting cavity is made as semicircular structure or rectangle structure.
Technological means of the present utility model, and unrestricted technical scope of the present utility model, those skilled in the art do apparent improvement in conjunction with common practise to the utility model, 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 are provided with the hand-held designs of frictional layer or finger gripping line or groove etc., change the structure of the existing similar blackboard erasers such as combination shape of dedusting sheet and dust-break sheet, within all falling into technical protection scope of the present utility model.
Claims (9)
1. a simple and easy dust-removing blackboard eraser, this blackboard eraser comprises 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) is located to be provided with rub body (2) moves around and the check valve (5) of folding in time, and described dedusting sheet (4) has magnetic and flexibility; This blackboard eraser in blackboard wiping process, rub body (2), dust-break sheet (3), the double blackboard that touches of dedusting sheet (4); This blackboard eraser left and right sides is provided with dedusting chamber (6), and rear side is provided with dust-collecting cavity (7).
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) is higher than the port surface of dedusting sheet (4) and dust-break sheet (3), rub body face is provided with elastomer between drain pan, under nature, the rub body area of section of dedusting sheet port is greater than rub body face area, from rub body face to the rub body wall between dedusting sheet (4) port, is made as smooth; Described rub body (2) is provided with rub body catch, and rub body sidewall is provided with the dust collecting with dedusting sheet (4) port match.
3. simple and easy dust-removing blackboard eraser according to claim 1, is characterized in that described check valve (5) is made as to move up and down change, rotation change or two kinds of modes in conjunction with change; Described check valve (5) is provided with friction extension rod (51), and the friction of described friction extension rod end arranges, and is flexible; Described check valve (5) is made as the dustproof shape that falls after rise; Described check valve (5) is elasticity setting.
4. simple and easy dust-removing blackboard eraser according to claim 1, is characterized in that being provided with the dust stop tab (9) that prevents that dust from falling after rise in the chamber in described dedusting chamber (6), and dust stop tab substitutes check valve (5), or is combined with check valve (5).
5. simple and easy dust-removing blackboard eraser according to claim 1, is characterized in that described dedusting sheet (4) port is made as 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, between dedusting sheet (4) and rub body face edge, leaves smaller gap (10); Check valve (5) is located at dedusting sheet (4) port; The dust-break sheet of described dust-collecting cavity side is also replaceable is dedusting sheet, is connected with dust-collecting cavity.
6. simple and easy dust-removing blackboard eraser according to claim 1, is characterized in that described dust-break sheet (3) also has magnetic and flexibility; Dust-break sheet (3) and rub body face edge are mutually close when wiping, and dust-break sheet (3) is with dedusting sheet (4) with high, and closed hoop is around rub body (2).
7. simple and easy dust-removing blackboard eraser according to claim 1, is characterized in that the dust collection case portion separation structure of described dust-collecting cavity (7) or overall structure are made as rotation, translation or dismounting conversion.
8. 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 in 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.
9. simple and easy dust-removing blackboard eraser according to claim 1, is characterized in that described rub body (2) is divided into wiping face and rub body (2) matrix, and detachable between the two; Detachable between described rub body (2) and described housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118221.4U CN203792987U (en) | 2014-02-25 | 2014-03-14 | Simple dust-removing blackboard eraser |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081853 | 2014-02-25 | ||
| CN201410064180.X | 2014-02-25 | ||
| CN201420081853.8 | 2014-02-25 | ||
| CN201410064180 | 2014-02-25 | ||
| CN201420118221.4U CN203792987U (en) | 2014-02-25 | 2014-03-14 | Simple dust-removing blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203792987U true CN203792987U (en) | 2014-08-27 |
Family
ID=50987141
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410098552.0A Expired - Fee Related CN103895427B (en) | 2014-02-25 | 2014-03-14 | Simple and easy dust-removing blackboard eraser and using method thereof |
| CN201420118221.4U Withdrawn - After Issue CN203792987U (en) | 2014-02-25 | 2014-03-14 | Simple dust-removing blackboard eraser |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410098552.0A Expired - Fee Related CN103895427B (en) | 2014-02-25 | 2014-03-14 | Simple and easy dust-removing blackboard eraser and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103895427B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895427A (en) * | 2014-02-25 | 2014-07-02 | 陈浩 | Simple dust removal blackboard eraser and using method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409065A (en) * | 2015-11-24 | 2017-02-15 | 华巧波 | Multifunctional teaching aid having convenient-to-detach hairbrush |
Family Cites Families (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 |
| CN103434315B (en) * | 2013-07-11 | 2015-02-18 | 陈浩 | Dust-proof blackboard eraser and application method thereof |
| CN103465698B (en) * | 2013-08-28 | 2015-11-18 | 陈浩 | Dust-removing blackboard eraser and using method thereof |
| CN103895427B (en) * | 2014-02-25 | 2016-06-29 | 陈浩 | Simple and easy dust-removing blackboard eraser and using method thereof |
-
2014
- 2014-03-14 CN CN201410098552.0A patent/CN103895427B/en not_active Expired - Fee Related
- 2014-03-14 CN CN201420118221.4U patent/CN203792987U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895427A (en) * | 2014-02-25 | 2014-07-02 | 陈浩 | Simple dust removal blackboard eraser and using method thereof |
| CN103895427B (en) * | 2014-02-25 | 2016-06-29 | 陈浩 | Simple and easy dust-removing blackboard eraser and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103895427A (en) | 2014-07-02 |
| CN103895427B (en) | 2016-06-29 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140827 Effective date of abandoning: 20160629 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |