CN104149527B - Dust absorption blackboard eraser - Google Patents
Dust absorption blackboard eraser Download PDFInfo
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- CN104149527B CN104149527B CN201410431822.5A CN201410431822A CN104149527B CN 104149527 B CN104149527 B CN 104149527B CN 201410431822 A CN201410431822 A CN 201410431822A CN 104149527 B CN104149527 B CN 104149527B
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Abstract
The invention provides a kind of automatic dust-absorption eraser, it only comprises frame for movement, do not need motor assist dust suction just can solve chalk dust when erasing the board to kick up, cause the problem that human body damages, be a kind of energy-conserving and environment-protective, easy to use, be beneficial to the novel blackboard eraser used in daily teaching.
Description
Technical field
The present invention relates to a kind of blackboard eraser, particularly relate to a kind of blackboard eraser that can absorb chalk dust.
Background technology
Blackboard eraser, always as one of teaching aid, is widely used in, in the middle of teaching, serving as the role of wiping chalk word.Ordinary blackboard eraser is when erasing the board, and dust of kicking up, causes air pollution.And these dust are easily sucked by people, cause actual bodily harm to people.
Nowadays existing many blackboard erasers that can absorb chalk dust being devised successively.Such as: 1. Authorization Notice No. is: the utility model title of CN202080012U is the utility model patent of " dust absorption blackboard eraser ", and application publication number is: the patent of invention name of CN101758713A is called: " dust-proof blackboard eraser " is all adopt driven by motor fan turns by chalk dust inspiration dust collection box, and the dust of dust collection box can pour out 2. Authorization Notice No.: the utility model title of CN202106768U is the utility model patent of " dust absorption blackboard eraser ", ash inhaled by same employing driven by motor fan, just solid grey aspect adopts the method for water spray to be bonded in lid by chalk dust.3. Authorization Notice No. is: to be the utility model patent of " green dust-free black board eraser " and application publication number be for the utility model title of CN202593110U: the patent of invention name of CN101722776A is called: " automatic dust-absorption eraser ", it is all the mode adopting roller and blackboard friction rolling, by power transmission to fan, dust inspiration filter bag stores by fan turns.
Although these design suction ash and store up grey in done very large improvement, still have some significantly not enough.Such as: the cost of blackboard eraser can be caused with motor high as drive unit, chalk dust can reduce the service life of motor simultaneously; Wiper and blackboard eraser are an entirety, when wiper uses the effect losing wiping chalk word for a long time, can cause the waste that whole blackboard eraser lost efficacy; The design and installation position of existing roller is not easy to blackboard eraser and erases the board marginal position, and present existing roller all does work to fan when driving the roller of the blackboard eraser of fan turns not roll back and forth, so multiple roller must be arranged and coordinate ratchet and ratchet to use, manufacturing process can be caused so numerous and diverse, consume more multiple resource, and produce larger noise when working; With filter bag as storage apparatus for ash, need frequent replacing can not realize recycling, not environmentally and cause the wasting of resources.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of pure machinery is provided, without the dust absorption blackboard eraser with functions such as wiping clean blackboard, automatic dust absorptions of motor assist.Its technical scheme is as described below.
A kind of dust absorption blackboard eraser, comprises dust suction chamber, felt rub body, dust-storage chamber three part, described dust suction chamber comprises dust suction chamber shell, rectangle open-work, air suction opening, four are agreed with structure B, vacuum part, described rectangle open-work is opened in the centre position of dust suction chamber enclosure bottom, described air suction opening is opened in dust suction chamber enclosure bottom surrounding, describedly agree with structure B one group of upper end position being formed on outer surface before and after dust suction chamber shell between two, described vacuum part is positioned at dust suction chamber enclosure, and described vacuum part comprises rubber roll, axle, two rubber friction wheels, two fixed bars, two drive links, two worm gears, two worm screws, two belt pulleys, two fans, two bearings, , a driving belt, described rubber roll and axle connect firmly into an entirety, described axle is arranged on the central axis place of rubber roll, described two rubber friction wheels are connected with two drive links respectively, described two drive links are arranged on the fixed bar of each respectively around, the centre position of described two fixed bars is all processed with chute, when the axle at rubber roll central axis place is in the middle position of chute, axle is consistent with the gap length L2 of chute left end and the gap length L2 of axle and chute right-hand member, and the gap length L2 at axle and chute two ends equals the distance L1 under now position between rubber roll and former and later two rubber friction wheels, i.e. L2=L1, when rolling when rubber roll and blackboard surface friction, rubber roll can rub with one of them rubber friction wheel and drive rubber friction wheel to rotate, fixed bar is fixed on the inner surface of dust suction chamber shell, the entirety that rubber roll and axle form is installed on two fixed bars by chute, described two worm screws are arranged on two drive links respectively away from rubber friction wheel one end, described two worm gears respectively with two worm engagings, described two bearings are all arranged on dust suction chamber enclosure, on the left side another on the right, and can rotate in fixed axis, each bearing is installed and fixes a belt pulley, a worm gear, a fan, is arranged on the belt pulley on two bearings, worm gear, fan all has belt pulley upper, worm gear is in centre, fan position relationship below, the belt pulley on each bearing, worm gear, fan not impede motion each other, the thread rotary orientation on described two worm screws is consistent, described felt rub body comprises felt, rectangle open-work, described felt is fixed on the bottom of described dust suction chamber shell, felt does not just block the air suction opening on described dust suction chamber outer casing bottom, felt centre position has rectangle open-work, the rectangle open-work consistent size of described rectangle open-work size and described dust suction chamber outer casing bottom, described dust-storage chamber comprise dust-storage chamber's shell, four agree with structure A, steam vent, agree with structure A one group of lower end being formed on outer surface before and after dust-storage chamber's shell between two, and can agree with the structure B phase of agreeing with on described dust suction chamber shell, described steam vent processing is on two sides, dust-storage chamber's shell left and right.
Described dust-storage chamber's enclosure has the water-absorbing sponge of solid dirt, and water-absorbing sponge is fixed on dust-storage chamber's enclosure end face.Water-absorbing sponge is carved with conduit.The shape of described water-absorbing sponge is rectangle, and size and dust-storage chamber's enclosure consistent size, gauge is 1/3rd of dust-storage chamber's thickness.One piece of screen pack is all respectively posted on described two sides, dust-storage chamber's outer surface of outer cover left and right, and screen pack just overlaps with two sides, described dust-storage chamber's shell left and right.Described felt upper surface and dust suction chamber shell lower surface are all respectively fixed with one piece of magic tape, and two pieces of magic tapes can be with the use of, namely fixed form adopts magic tape bonding, and two pieces of magic tape centre positions all have rectangle open-work, and completely the same with the rectangle open-work on described felt.Described air suction opening is processed as circle and diameter is 6mm.
The invention has the beneficial effects as follows: this blackboard eraser utilizes pure machine driving to provide power, environmental protection and operating noise is little, this blackboard eraser is for convenience detach, can change the dust of each parts and cleaning storage inside easily, realize recycling, improve service life, can not cause the wasting of resources, this wiping blackboard structure is simple, low cost of manufacture, this blackboard eraser utilizes one to be arranged on cylindrical roller bottom blackboard eraser and blackboard and rubs and produce power, is so more beneficial to the position at blackboard wiping edge.
Accompanying drawing explanation
Below in conjunction with accompanying drawing with detailed description of the invention, the present invention is further described.
Fig. 1 is the front view of dust absorption blackboard eraser.
Fig. 2 is the left view of dust absorption blackboard eraser.
Fig. 3 is the upward view of dust absorption blackboard eraser.
Fig. 4 is the decomposing schematic representation of dust absorption blackboard eraser.
The structural representation of Tu5Shi dust-storage chamber 1.
The upward view of Tu6Shi dust-storage chamber 1.
The partial sectional view of Tu7Shi dust-storage chamber 1.
Fig. 8 is dust suction chamber shell 25 structural representation.
Fig. 9 is the front view of dust suction chamber shell 25.
Figure 10 is the upward view of dust suction chamber 2.
Figure 11 is vacuum part, inside 28 structural representation of dust suction chamber 2.
Figure 12 is rubber roll 7, fixed bar 11, the syndeton schematic diagram between rubber friction wheel 15.
Figure 13 is rubber roll 7, fixed bar 11, the syndeton front view between rubber friction wheel 15.
Figure 14 is rubber roll 7 when working towards certain direction, rubber roll 7, fixed bar 11, a kind of view that rubber friction wheel 15 is residing at this moment.
Figure 15 is fan 12, worm gear 13, worm screw 14, belt pulley 17, the syndeton schematic diagram between bearing 18.
Figure 16 is the partial sectional view of felt rub body 3.
In figure: 1, dust-storage chamber, 2, dust suction chamber, 3, felt rub body, 4, agree with structure, 4A, agree with structure A, 4B, agree with structure B, 5, steam vent, 6, air suction opening, 7, rubber roll, 8, conduit on water-absorbing sponge, 9, water-absorbing sponge, 10A, magic tape A, 10B, magic tape B, 11, fixed bar, 12, fan, 13, worm gear, 14, worm screw, 15, rubber friction wheel, 16, driving belt, 17, belt pulley, 18, bearing, 19, drive link, 20, chute, 21, rectangle open-work A, 22, screen pack, 23, axle, 24, dust-storage chamber's shell, 25, dust suction chamber shell, 26, rectangle open-work B, 27, rectangle open-work C, 28, vacuum part, 29, rectangle open-work D, 30, felt.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
A kind of dust absorption blackboard eraser, Fig. 1, in Fig. 4, by dust-storage chamber 1, dust suction chamber 2 and felt rub body 3 three part composition, and this three part can be dismantled and assembles in the following order, that is: dust-storage chamber 1 bottom and dust suction chamber 2 top be by agree with structure 4 (agree with structure can be various structures mode such as: the screw that can tighten, movable hinge, pin pin conjunction etc.) (agree with structure to be divided into and to agree with structure A and agree with structure B, they with the use of) combine, felt rub body 3 top and dust suction chamber 2 bottom are by magic tape A10A, magic tape B10B (magic tape be two with the use of, that is: one of band frizzle can be bonded together with of band barb) be bonded together.
In Fig. 2, Fig. 5, the left and right sides of dust-storage chamber's shell 24 all processes some steam vents 5, and all posts screen pack 22.The both sides, front and back of dust-storage chamber 1 all process agrees with structure A4A two for what combine with dust suction chamber 2.Please refer to Fig. 8 and Figure 10, around dust suction chamber shell 25 lower surface edge, process some air suction openings 6 equally.Dust suction chamber shell 25 lower surface is fixed with magic tape A10A (fixed form preferably bonds by super glue).Dust suction chamber 2 internal part rubber roll 7 exposes dust suction chamber 2, coordinates with the height of felt rub body 3.
In Fig. 5, Fig. 6 and Fig. 7, water-absorbing sponge 9 is fixed on the top of dust-storage chamber's shell 24 inside.In figure 16, the top of magic tape B10B and felt 30 is fixed together (wherein fixed form can be sew up, viscose glue bonding etc.), form the entirety that can not be split namely: felt rub body 3.
In Figure 11, the structural representation of the vacuum part, inside 28 of dust suction chamber 2 also easily can find out the connected mode of the inner vacuum part 28 of dust suction chamber 2 in conjunction with Figure 15.That is: rubber roll 7, rubber friction wheel 15, fixed bar 11 form one as shown in figure 12 can be movable entirety; Belt pulley 17, worm gear 13, fan 12 are fixed on bearing 18 successively by order shown in Figure 13, and worm screw 14 engages with worm gear 13.
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
In Fig. 4 and Figure 16, the present invention is by dust-storage chamber 1, dust suction chamber 2, and felt rub body 3 three part forms.And this three part can be dismantled and be assembled, and its mode is: dust-storage chamber 1 bottom and dust suction chamber 2 top are combined by agreeing with structure 4, and dust suction chamber 2 bottom and felt rub body 3 top are bonded together by magic tape A10A, magic tape B10B.
Fig. 5, in Fig. 6 and Fig. 7, dust-storage chamber 1 by dust-storage chamber's shell 24, water-absorbing sponge 9, agree with structure A4A and screen pack 22 forms.Wherein namely water-absorbing sponge 9 can have preferred version: water-absorbing sponge 9 only has one side to be processed with conduit, other each all smooth, conduit is in order to increase the contact area with dust, strengthen the ability of sticky ash, and the shape of water-absorbing sponge 9 is rectangle, size dimension is the size can just putting dust-storage chamber's shell 1 inside into, and gauge is 1/3rd of dust-storage chamber 1 thickness.The size and shape of screen pack 22 is completely consistent with the left and right sides (two faces that namely length is shorter) of Dust Storage Room shell 1.The left and right sides of dust-storage chamber's shell 24 all process some steam vents 5 wherein steam vent 5 there is preferred version namely: steam vent 5 shape size of reasonable quantity is consistent, be the circle that diameter is 6mm, and be positioned on straight line, and steam vent 5 is not just blocked by the water-absorbing sponge of dust-storage chamber 1 inside.Both sides, front and back (namely adjacent with two faces having steam vent 5 face) all process agrees with structure A4A two for what combine with dust suction chamber 2.The position preferred version agreeing with structure A4A is: equidistant with dust-storage chamber 1 centre position.Combination is: have the water-absorbing sponge 9 of conduit to be fixed on the inside top surface of dust-storage chamber's shell 24, and its fixed form is preferably pasted by super glue, and the conduit 8 on water-absorbing sponge is towards dust suction chamber 2.The face of the outside left and right sides of dust-storage chamber's shell 24 is all glued with screen pack 22.Screen pack is for filtering not by the chalk dust having the water-absorbing sponge 9 of conduit to cling.
In Fig. 3, Fig. 8, Fig. 9 and Figure 10, dust suction chamber 2 by dust suction chamber shell 25, magic tape A10A, agree with structure B4B and the inner vacuum part 28 (please refer to Figure 11) of dust suction chamber 2 forms.The upper part in former and later two faces of dust suction chamber shell 25 process just in time can with Dust Storage Room 1 agree with agree with structure B4B and quantity and position all with on Dust Storage Room 1 to agree with structure A4A consistent.The lower surface surrounding of dust suction chamber shell 25 processes the moderate air suction opening of quantity 6, and wherein the preferred version of air suction opening 6 is: shape size is consistent, is the circle that diameter is 6mm.The lower surface middle position of dust suction chamber shell 25 processes rectangle open-work A21, and its size can be mated with rubber roll 7, and with the rubber roll 7 when rolling back and forth without touching.The size of magic tape A10A does not just block air suction opening, and shape is rectangle, and centre position is processed with rectangle open-work B26 equally, and its size is consistent with the rectangle open-work A21 of dust suction chamber shell 25 lower surface.The smooth one side of magic tape A10A (with frizzle) is fixed on the lower surface of dust suction chamber shell 25, and its fixed form is preferably: paste by super glue.Magic tape A10A be with facing down of frizzle (magic tape be two with the use of, the one side of one is frizzle, another one side is barb, frizzle and barb just in time can be bonded together), can bond (please refer to Figure 16) with the magic tape B10B (with barb) on felt rub body 3.Rectangle open-work B26 on magic tape A10A overlaps with the rectangle open-work A21 of dust suction chamber shell 25 lower surface.Vacuum part 28 (please refer to Figure 11) is arranged on the inside of dust suction chamber 2.
In Fig. 4 and Figure 16, felt rub body 3 magic tape 10B is fixed the entirety that (smooth one face toward felt, and facing up of band barb, coordinates with dust suction chamber 2) form on felt 30.Its fixed form is preferably sewed up, that is: magic tape B10B is sewn on felt 30.The size and shape of felt rub body 3 is consistent with the magic tape B10B of dust suction chamber 2 lower surface, and is processed with the rectangle open-work C27 of same position and size.Felt 30 is processed with the rectangle open-work D29 of same position and size.The thickness of felt rub body 3 just in time can coordinate with the height that rubber roll 7 (can make referrals to downwards) exposes dust suction chamber 2.The size position of wherein rectangle open-work A21, rectangle open-work B26, rectangle open-work C27, rectangle open-work D29 is all consistent, and after combination, rectangle open-work A21, rectangle open-work B26, rectangle open-work C27, rectangle open-work D29 overlap.
In Figure 11, Figure 12, Figure 13, Figure 14 and Figure 15, all parts connected mode of the inner vacuum part of dust suction chamber 2 28 is: rubber roll 7 and two rubber friction wheels 15 are installed on the fixed bar 11 of each around.The height that rubber roll 7 exposes dust suction chamber 2 just in time can coordinate with the thickness of felt rub body 3, and can ensure when erasing the board, felt rub body 3 can smoothly while erasing chalk word rubber roll 7 can roll with blackboard surface friction.Two fixed bars 11 in left and right are identical, and have chute 20.Chute 20 is positioned at fixed bar 11 centre position, and the height of chute 20 just in time can coordinate with the axle 23 on rubber roll 7.Two rubber friction wheels 15 can do fixed-axis rotation, and rubber roll 7 can rotate and also can slide along chute 20.When the axle 23 at rubber roll 7 central axis place is in the middle position of chute 20, axle 23 is consistent with the gap length at two ends, chute left and right, and the gap length at axle 23 and two ends, chute left and right equals distance under now position between rubber roll 7 and former and later two rubber friction wheels 15 (as Figure 13, shown in Figure 14), when namely ensureing to roll when rubber roll 7 and blackboard surface friction, rubber roll 7 can rub with one of them rubber friction wheel 15 and drive rubber friction wheel 15 to rotate.Two rubber friction wheels 15 are connected with the worm screw 14 of the right and left respectively by two drive links 19, and the worm screw 14 on both sides engages respectively at the worm gear 13 on both sides.Thread rotary orientation on the worm screw 14 on wherein both sides is consistent.
In Figure 15, belt pulley 17, worm gear 13, fan 12, distance is suitably each other, and according to belt pulley 17 upper, worm gear 13 in centre, fan 12 order below and being fixed on bearing 18.The belt pulley 17 of both sides is connected by driving belt 16 non-crossing, ensures that the belt pulley 17 of both sides can equidirectional rotation simultaneously.
Patent of the present invention " dust absorption blackboard eraser " operation principle is: when using this dust absorption blackboard eraser to erase the board towards some directions, because rubber roll 7 coordinates with felt rub body height, rubber roll 7 can with blackboard friction and rolling, at this moment rubber roll 7 can rub with the rubber friction wheel 15 of one end, drives rubber friction wheel 15 to rotate.Power passes to the worm screw 14 of homonymy by homonymy drive link 19, because worm screw 14 engages with the worm gear 13 of homonymy, so worm gear 13 can rotate, drives the fan 12 on same bearing 18 simultaneously, belt pulley 17 rotates together.Because the belt pulley 17 of both sides is connected by driving belt 16, so meanwhile the fan of another side also can equidirectional rotation simultaneously.When using this dust absorption blackboard eraser to erase the board towards another direction, rubber roll 7 can rub with the rubber friction wheel 15 of the other end, drives rubber friction wheel 15 to rotate, consistent with before of operation principle.So two fans 12 can continue equidirectional rotation simultaneously, local depression is caused to dust suction chamber 2 inside, so outside atmospheric pressure will advance dust-storage chamber 1 the chalk dust under wiping through dust suction chamber 2, and inhaling due to the water-absorbing sponge in dust-storage chamber 1 has sufficient water, so chalk dust can be bonded on sponge.Even if dust adhesion is not very sufficient, remaining chalk dust can filter out by screen pack 22.
Dust-storage chamber 1 can pull down, and with clean water dust-storage chamber 1 and water-absorbing sponge 9.After dust absorption blackboard eraser uses for a long time, felt rub body 3 can lose the effect of the word that erases the board, and is at this moment torn by felt rub body 3, and the felt rub body 3 that only need more renew just can continue to use.
Claims (4)
1. a dust absorption blackboard eraser, comprise dust suction chamber (2), felt rub body (3), dust-storage chamber (1) three part, it is characterized in that: described dust suction chamber (2) comprises dust suction chamber shell (25), rectangle open-work (21), air suction opening (6), four are agreed with structure B(4B), vacuum part (28), described rectangle open-work (21) opens the centre position in dust suction chamber shell (25) bottom surface, described air suction opening (6) is opened in dust suction chamber shell (25) bottom surface surrounding, describedly agree with structure B(4B) between two one group be formed on the upper end position of outer surface before and after dust suction chamber shell (25), it is inner that described vacuum part (28) is positioned at dust suction chamber shell (25), described vacuum part comprises rubber roll (7), axle (23), two rubber friction wheels (15), two fixed bars (11), two drive links (19), two worm gears (13), two worm screws (14), two belt pulleys (17), two fans (12), two bearings (18), , a driving belt (16), described rubber roll (7) connects firmly into an entirety with axle (23), described axle (23) is arranged on the central axis place of rubber roll (7), described two rubber friction wheels (15) are connected with two drive links (19) respectively, described two drive links (19) are arranged on the fixed bar (11) of each respectively around, the centre position of described two fixed bars (11) is all processed with chute (20), when the axle (23) at rubber roll (7) central axis place is in the middle position of chute (20) the gap length L2 of axle (23) and chute (20) left end and axle (23) consistent with the gap length L2 of chute (20) right-hand member, and the gap length L2 at axle (23) and chute (20) two ends equals the distance L1 under now position between rubber roll (7) and former and later two rubber friction wheels (15), i.e. L2=L1, when rolling when rubber roll (7) and blackboard surface friction, rubber roll (7) can rub with one of them rubber friction wheel (15) and drive rubber friction wheel (15) to rotate, fixed bar (11) is fixed on the inner surface of dust suction chamber shell (25), the entirety that rubber roll (7) and axle (23) form is installed on two fixed bars (11) by chute (20), described two worm screws (14) are arranged on two drive links (19) respectively away from rubber friction wheel (15) one end, described two worm gears (13) are engaged with two worm screws (14) respectively, it is inner that described two bearings (18) are all arranged on dust suction chamber shell (25), on the left side another on the right, and can rotate in fixed axis, each bearing (18) is installed and fixes a belt pulley (17), a worm gear (13), a fan (12), be arranged on the belt pulley (17) on two bearings (18), worm gear (13), fan (12) all has belt pulley (17) upper, worm gear (13) is in centre, fan (12) position relationship below, belt pulley (17) on each bearing (18), worm gear (13), fan (12) not impede motion each other, thread rotary orientation on described two worm screws (14) is consistent,
Described felt rub body (3) comprises felt (30), rectangle open-work (29), described felt (30) is fixed on the bottom of described dust suction chamber shell (25), felt (30) does not just block the air suction opening (6) on described dust suction chamber shell (25) bottom, felt (30) centre position has rectangle open-work (29), rectangle open-work (21) consistent size of described rectangle open-work (29) size and described dust suction chamber shell (25) bottom;
Described dust-storage chamber (1) comprise dust-storage chamber's shell (24), four agree with structure A(4A), steam vent (5), agree with structure A(4A) between two one group be formed on the lower end of outer surface before and after dust-storage chamber's shell (24), and can with described dust suction chamber shell (25) agrees with structure B(4B) agree with mutually, described steam vent (5) processing is on dust-storage chamber's shell (24) two sides, left and right; There is the water-absorbing sponge (9) of solid dirt described dust-storage chamber's shell (24) inside, and water-absorbing sponge (9) is fixed on dust-storage chamber's shell (24) inside top surface; The shape of described water-absorbing sponge (9) is rectangle, and size is consistent with dust-storage chamber shell (24) inside dimension, and gauge is 1/3rd of dust-storage chamber (1) thickness.
2. dust absorption blackboard eraser as claimed in claim 1, it is characterized in that, one piece of screen pack (22) is all respectively posted on described two sides, dust-storage chamber's shell (24) outer surface left and right, and screen pack just overlaps with described dust-storage chamber shell (24) two sides, left and right.
3. dust absorption blackboard eraser as claimed in claim 2, it is characterized in that, described felt (30) upper surface and dust suction chamber shell (25) lower surface are all respectively fixed with one piece of magic tape (10A, 10B), and two pieces of magic tapes can be with the use of, namely fixed form adopts magic tape bonding, and two pieces of magic tape centre positions all have rectangle open-work, and completely the same with the rectangle open-work (29) on described felt (30).
4. dust absorption blackboard eraser as claimed in claim 3, it is characterized in that, described air suction opening (6) is processed as circle and diameter is 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410431822.5A CN104149527B (en) | 2014-08-29 | 2014-08-29 | Dust absorption blackboard eraser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410431822.5A CN104149527B (en) | 2014-08-29 | 2014-08-29 | Dust absorption blackboard eraser |
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| Publication Number | Publication Date |
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| CN104149527A CN104149527A (en) | 2014-11-19 |
| CN104149527B true CN104149527B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410431822.5A Expired - Fee Related CN104149527B (en) | 2014-08-29 | 2014-08-29 | Dust absorption blackboard eraser |
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| CN (1) | CN104149527B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107538999A (en) * | 2017-07-18 | 2018-01-05 | 安徽卓特信息技术有限公司 | A kind of automatically cleaning blackboard |
| CN107379840A (en) * | 2017-07-27 | 2017-11-24 | 冯雪 | A kind of self-cleaning blackboard eraser |
| CN108749423A (en) * | 2018-06-06 | 2018-11-06 | 南京机电职业技术学院 | A kind of electric dust absorption blackboard eraser |
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| CN2515040Y (en) * | 2001-11-16 | 2002-10-09 | 邢长生 | Automatic chalk dust absorption type blackboard eraser |
| CN2928536Y (en) * | 2006-07-26 | 2007-08-01 | 邓君华 | Hand dust suction blackboard eraser |
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| JP3164807U (en) * | 2009-10-30 | 2010-12-16 | 李燈茂 | Handheld blackboard eraser with automatic chalk dust cleaning function |
| CN203557896U (en) * | 2013-09-26 | 2014-04-23 | 安徽工程大学 | Eraser |
| CN203766349U (en) * | 2013-07-06 | 2014-08-13 | 安徽工程大学 | A blackboard eraser capable collecting chalk dust |
| CN203995356U (en) * | 2014-08-29 | 2014-12-10 | 安徽工程大学 | Dust absorption blackboard eraser |
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2014
- 2014-08-29 CN CN201410431822.5A patent/CN104149527B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2133465Y (en) * | 1992-06-06 | 1993-05-19 | 王永章 | Dust-catched eraser |
| CN2515040Y (en) * | 2001-11-16 | 2002-10-09 | 邢长生 | Automatic chalk dust absorption type blackboard eraser |
| CN2928536Y (en) * | 2006-07-26 | 2007-08-01 | 邓君华 | Hand dust suction blackboard eraser |
| CN101722776A (en) * | 2008-10-10 | 2010-06-09 | 上海电机学院 | Automatic dust absorption blackboard eraser |
| JP3156229U (en) * | 2009-03-18 | 2009-12-24 | 彩麗 陳 | Dust absorption type automatic blackboard eraser |
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| CN104149527A (en) | 2014-11-19 |
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