CN203995356U - Dust absorption blackboard eraser - Google Patents
Dust absorption blackboard eraser Download PDFInfo
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- CN203995356U CN203995356U CN201420491645.5U CN201420491645U CN203995356U CN 203995356 U CN203995356 U CN 203995356U CN 201420491645 U CN201420491645 U CN 201420491645U CN 203995356 U CN203995356 U CN 203995356U
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Abstract
The utility model provides a kind of dust absorption blackboard eraser, comprise dust suction chamber (2), felt rub body (3), dust-storage chamber's (1) three part, described dust suction chamber (2) comprises that dust suction chamber shell (25), rectangle open-work (21), air suction opening (6), four agree with structure B(4B), vacuum part (28) etc., it only comprises frame for movement, not needing motor assist dust suction just can solve chalk dust while erasing the board kicks up, cause the problem of human body infringement, be a kind of energy-conserving and environment-protective, easy to use, be beneficial to the novel blackboard eraser using in daily teaching.
Description
Technical field
The present invention relates to a kind of blackboard eraser, relate in particular 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 in the time erasing the board, and the dust of can 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.For example: 1. Granted publication number is: the utility model title of CN 202080012 U is the utility model patent of " dust absorption blackboard eraser ", and application publication number is: the patent of invention name of CN 101758713 A is called: " dust-proof blackboard eraser " is all to adopt driven by motor fan to rotate chalk dust inspiration dust collection box, and the dust of dust collection box can be poured out 2. Granted publications number: the utility model title of CN 202106768 U is the utility model patent of " dust absorption blackboard eraser ", the same driven by motor fan that adopts is inhaled ash, just solid grey aspect adopts the method for water spray that chalk dust is bonded in lid.3. Granted publication number is: the utility model title of CN 202593110 U is that utility model patent and the application publication number of " green dust-free black board eraser " is: the patent of invention name of CN 101722776 A is called: " automatic dust-absorption eraser ", it is all the mode that adopts roller and blackboard friction rolling, power is passed to fan, and fan rotates dust inspiration filter bag is stored.
Although these designs are being inhaled ash and storing up aspect grey and done very large improvement, still have some significantly deficiencies.For example: can cause the cost of blackboard eraser high as drive unit with motor, the service life that chalk dust can reduce motor simultaneously; Wiper and blackboard eraser are an entirety, use the used time of doing that loses wiping chalk word, the waste that can cause whole blackboard eraser to lose efficacy when wiper is long-time; The design and installation position of existing roller is not easy to the blackboard eraser marginal position that erases the board, and the roller of the blackboard eraser that present existing roller drive fan is rotated all does work to fan can not roll back and forth time, so multiple rollers must be set and coordinate ratchet and ratchet use, can cause like this manufacturing process numerous and diverse, consume more resources, and when work in, produces larger noise; As storage apparatus for ash, need frequent replacing can not realize and recycling with filter bag, not environmental protection 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 absorption of motor assist.Its technical scheme is as described below.
A kind of dust absorption blackboard eraser, comprise dust suction chamber (2), felt rub body (3), dust-storage chamber's (1) three part, 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) is opened 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, described structure (4) the one group of upper end position that is formed on outer surface before and after dust suction chamber shell (25) between two that agrees with, described vacuum part (28) is positioned at dust suction chamber shell (25) inside, 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 respectively around on the fixed bar of each (11), the centre position of described two fixed bars (11) is all processed with chute (20), in the time of centre position place in chute (20) of the axle (23) at rubber roll (7) central axis place, the gap length at axle (23) and chute (20) two ends, left and right is consistent is L2=L2, and the gap length (L2) at axle (23) and chute (20) two ends equals the distance L 1 between rubber roll (7) and former and later two rubber friction wheels (15) under position now, be L2=L1, in the time that rubber roll (7) rolls with blackboard surface friction, rubber roll (7) can drive rubber friction wheel (15) to rotate with one of them rubber friction wheel (15) friction, fixed bar (11) is fixed on the inner surface of dust suction chamber shell (25), rubber roll (7) is installed on two fixed bars (11) by chute (20) with the entirety of axle (23) composition, described two worm screws (14) are arranged on respectively two drive links (19) away from rubber friction wheel (15) one end, described two worm gears (13) engage with two worm screws (14) respectively, described two bearings (18) are all arranged on dust suction chamber shell (25) inside, on the left side another on the right, and can rotate in fixed axis, on each bearing (18), install and fix 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) impede motion not 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) comprises that 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) on agree with structure B(4B) agree with mutually, described steam vent (5) is processed on dust-storage chamber's shell (24) two sides, left and right.
Wherein, described dust absorption blackboard eraser, 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.
Wherein, described dust absorption blackboard eraser, is carved with conduit (8) on water-absorbing sponge (9).
Wherein, described dust absorption blackboard eraser, described water-absorbing sponge (9) be shaped as rectangle, size is consistent with dust-storage chamber's shell (24) inside dimension, gauge is 1/3rd of dust-storage chamber (1) thickness.
Wherein, described dust absorption blackboard eraser, a 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.
Wherein, described dust absorption blackboard eraser, described felt (30) upper surface and dust suction chamber shell (25) lower surface are all respectively fixed with a magic tape (10A, 10B), and two magic tapes can be used in conjunction with, be that fixed form adopts magic tape bonding, two magic tape centre positions all have rectangle open-work, and in full accord with the rectangle open-work (29) on described felt (30).
Wherein, described dust absorption blackboard eraser, described air suction opening (6) is processed as circle and diameter is 6mm.
The invention has the beneficial effects as follows: this blackboard eraser utilizes pure machine driving that power is provided, environmental protection and operating noise are little, this blackboard eraser is for convenience detach, can change easily each parts and clean the dust of storage inside, and realization recycles, improve service life, can not cause the wasting of resources, this wiping blackboard structure is simple, low cost of manufacture, this blackboard eraser utilizes cylinder roller and a blackboard friction that is arranged on blackboard eraser bottom to produce power, is so more beneficial to the position at blackboard wiping edge.
Brief description of the drawings
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 representations.
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 representations 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.
When Figure 14 is rubber roll 7 towards certain direction work, rubber roll 7, fixed bar 11, rubber friction wheel 15 is residing a kind of view 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 compositions, and this three part can be dismantled and assemble in the following order, that is: dust-storage chamber 1 bottom and dust suction chamber 2 tops be by agree with structure 4(agree with structure can be various structures mode for example: the screw that can tighten, movable hinge, pin pin closes etc.) (agreeing with structure is divided into and agrees with structure A and agree with structure B, they are used in conjunction with) combine, felt rub body 3 tops and dust suction chamber 2 bottoms are by magic tape A 10A, magic tape B 10B(magic tape is two and is used in conjunction with, that is: with frizzle and with barb one can be bonded together) be bonded together.
Fig. 2, in 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 two of structure A 4A for what combine with dust suction chamber 2.Please refer to Fig. 8 and Figure 10, dust suction chamber shell 25 lower surface edges process some air suction openings 6 around equally.Dust suction chamber shell 25 lower surfaces are fixed with magic tape A 10A(fixed form and are preferably by super glue bonding).Dust suction chamber 2 internal part rubber rolls 7 expose dust suction chamber 2, coordinate 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 B 10B and felt 30 be fixed together (wherein fixed form can be sew up, viscose glue is bonding etc.), form the entirety can not be split: felt rub body 3.
In Figure 11, the structural representation of the vacuum part, inside 28 of dust suction chamber 2 also can easily be found 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 are used for illustrating 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, felt rub body 3 three part compositions.And this three part can be dismantled and be assembled, and its mode is: dust-storage chamber 1 bottom and dust suction chamber 2 tops are combined by agreeing with structure 4, and dust suction chamber 2 bottoms and felt rub body 3 tops are bonded together by magic tape A 10A, magic tape B 10B.
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 A 4A and screen pack 22 forms.Wherein 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 and the contact area of dust, strengthen sticky grey ability, and water-absorbing sponge 9 be shaped as rectangle, size dimension is the size that can just put dust-storage chamber's shell 1 inside into, and gauge is 1/3rd of dust-storage chamber's 1 thickness.The size and shape of screen pack 22 is completely consistent with the left and right sides (being two shorter faces of length) 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: steam vent 5 shape sizes of reasonable quantity are 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.Before and after both sides (with two faces that face is adjacent that have steam vent 5) all process and agree with two of structure A 4A for what combine with dust suction chamber 2.The location optimization scheme of agreeing with structure A 4A 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, its fixed form is preferably pasted by super glue, and conduit 8 on water-absorbing sponge is towards dust suction chamber 2.On the face of dust-storage chamber's shell 24 outside left and right sides, be all glued with screen pack 22.Screen pack is for filtering the chalk dust that is not had the water-absorbing sponge of conduit 9 to cling.
In Fig. 3, Fig. 8, Fig. 9 and Figure 10, dust suction chamber 2 by dust suction chamber shell 25, magic tape A 10A, agree with structure B 4B and the inner vacuum part 28(of dust suction chamber 2 please refer to Figure 11) form.The upper part of dust suction chamber shell 25 former and later two faces process just in time can agree with Dust Storage Room 1 agree with structure B 4B and quantity and position all with on Dust Storage Room 1 to agree with structure A 4A consistent.The lower surface surrounding of dust suction chamber shell 25 processes the air suction opening 6 that quantity is moderate, 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 centre position place of dust suction chamber shell 25 processes rectangle open-work A 21, and its size can be mated with rubber roll 7, and rubber roll 7 when rolling is back and forth without touching.The size of magic tape A 10A is not just blocked air suction opening, is shaped as rectangle, and centre position is processed with rectangle open-work B 26 equally, and its size is consistent with the rectangle open-work A 21 of dust suction chamber shell 25 lower surfaces.Magic tape A 10A(is with frizzle) smooth one side is fixed on the lower surface of dust suction chamber shell 25, and its fixed form is preferably: paste by super glue.Magic tape A 10A faces down with one of frizzle, and (magic tape is two and is used in conjunction with, the one side of one is frizzle, another one side is barb, frizzle and barb just in time can be bonded together), can with felt rub body 3 on magic tape B 10B(with barb) bonding (please refer to Figure 16).Rectangle open-work B 26 on magic tape A 10A overlaps with the rectangle open-work A 21 of dust suction chamber shell 25 lower surfaces.Vacuum part 28(please refer to Figure 11) be arranged on the inside of dust suction chamber 2.
In Fig. 4 and Figure 16, felt rub body 3 is magic tape 10B to be fixed to the entirety that (smooth one side, towards felt, faces up with one of barb, coordinates with dust suction chamber 2) forms on felt 30.Its fixed form is preferably sewed up, that is: magic tape B 10B is sewn on felt 30.The size and shape of felt rub body 3 is consistent with the magic tape B 10B of dust suction chamber 2 lower surfaces, and is processed with same position and big or small rectangle open-work C 27.Felt 30 is processed with same position and big or small rectangle open-work D 29.The thickness of felt rub body 3 just in time can make referrals to downwards with rubber roll 7() height that exposes dust suction chamber 2 coordinates.Wherein rectangle open-work A 21, rectangle open-work B 26, rectangle open-work C 27, the big or small position of rectangle open-work D 29 is all consistent, and rectangle open-work A 21 after combination, rectangle open-work B 26, rectangle open-work C 27, rectangle open-work D 29 overlaps.
In Figure 11, Figure 12, Figure 13, Figure 14 and Figure 15, all parts connected mode of the inner vacuum part 28 of dust suction chamber 2 is: rubber roll 7 and two rubber friction wheels 15 are installed in around on the fixed bar 11 of each.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 in the time erasing the board, felt rub body 3 smoothly when 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 positions, 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 also and can slide along chute 20.In the time of centre position place in chute 20 of the axle 23 at rubber roll 7 central axis places, 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 under position now the distance between rubber roll 7 and former and later two rubber friction wheels 15 (as Figure 13, shown in Figure 14), ensure that rubber roll 7 can rub with one of them rubber friction wheel 15 and drive rubber friction wheel 15 to rotate in the time that rubber roll 7 rolls with blackboard surface friction.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.Wherein the thread rotary orientation on the worm screw 14 on both sides is consistent.
In Figure 15, belt pulley 17, worm gear 13, fan 12, each other distance suitably, and according to belt pulley 17 upper, worm gear 13 is in centre, order below of fan 12 and being fixed on bearing 18.Non-intersection of driving belt 16 of belt pulley 17 use of both sides is connected, and ensures the belt pulley 17 equidirectional rotation simultaneously of both sides.
Patent of the present invention " dust absorption blackboard eraser " operation principle is: in the time 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 roll with blackboard friction, 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 is passed 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, drive fan 12, belt pulley 17 on same bearing 18 to rotate together simultaneously.Because the belt pulley 17 of both sides is connected by driving belt 16, so meanwhile also equidirectional rotation simultaneously of the fan of another side.When using this dust absorption blackboard eraser while erasing 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, cause local depression to dust suction chamber 2 inside, so outside atmospheric pressure will advance dust-storage chamber 1 through dust suction chamber 2 the chalk dust under wiping, because the water-absorbing sponge suction in dust-storage chamber 1 has sufficient water, so chalk dust can be bonded on sponge.Even if dust adhesion is not very sufficient, screen pack 22 can filter out remaining chalk dust.
Dust-storage chamber 1 can pull down, and cleans dust-storage chamber 1 and water-absorbing sponge 9 with clear water.When after the long-time use of dust absorption blackboard eraser, felt rub body 3 can lose the effect of the word that erases the board, and at this moment felt rub body 3 is torn, and the felt rub body 3 that only need more renew just can continue to use.
Claims (7)
1. a dust absorption blackboard eraser, comprises dust suction chamber (2), felt rub body (3), dust-storage chamber's (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) is opened 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, described structure (4) the one group of upper end position that is formed on outer surface before and after dust suction chamber shell (25) between two that agrees with, described vacuum part (28) is positioned at dust suction chamber shell (25) inside, 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 respectively around on the fixed bar of each (11), the centre position of described two fixed bars (11) is all processed with chute (20), in the time of centre position place in chute (20) of the axle (23) at rubber roll (7) central axis place, the gap length at axle (23) and chute (20) two ends, left and right is consistent is L2=L2, and the gap length (L2) at axle (23) and chute (20) two ends equals the distance L 1 between rubber roll (7) and former and later two rubber friction wheels (15) under position now, be L2=L1, in the time that rubber roll (7) rolls with blackboard surface friction, rubber roll (7) can drive rubber friction wheel (15) to rotate with one of them rubber friction wheel (15) friction, fixed bar (11) is fixed on the inner surface of dust suction chamber shell (25), rubber roll (7) is installed on two fixed bars (11) by chute (20) with the entirety of axle (23) composition, described two worm screws (14) are arranged on respectively two drive links (19) away from rubber friction wheel (15) one end, described two worm gears (13) engage with two worm screws (14) respectively, described two bearings (18) are all arranged on dust suction chamber shell (25) inside, on the left side another on the right, and can rotate in fixed axis, on each bearing (18), install and fix 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) impede motion not 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) comprises that 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) on agree with structure B(4B) agree with mutually, described steam vent (5) is processed on dust-storage chamber's shell (24) two sides, left and right.
2. dust absorption blackboard eraser as claimed in claim 1, is characterized in that, 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.
3. dust absorption blackboard eraser as claimed in claim 2, is characterized in that, is carved with conduit (8) on water-absorbing sponge (9).
4. dust absorption blackboard eraser as claimed in claim 3, is characterized in that, described water-absorbing sponge (9) be shaped as rectangle, size is consistent with dust-storage chamber's shell (24) inside dimension, gauge is 1/3rd of dust-storage chamber (1) thickness.
5. dust absorption blackboard eraser as claimed in claim 4, is characterized in that, a 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.
6. dust absorption blackboard eraser as claimed in claim 5, it is characterized in that, described felt (30) upper surface and dust suction chamber shell (25) lower surface are all respectively fixed with a magic tape (10A, 10B), and two magic tapes can be used in conjunction with, be that fixed form adopts magic tape bonding, two magic tape centre positions all have rectangle open-work, and in full accord with the rectangle open-work (29) on described felt (30).
7. dust absorption blackboard eraser as claimed in claim 6, 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 |
|---|---|---|---|
| CN201420491645.5U CN203995356U (en) | 2014-08-29 | 2014-08-29 | Dust absorption blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491645.5U CN203995356U (en) | 2014-08-29 | 2014-08-29 | Dust absorption blackboard eraser |
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| Publication Number | Publication Date |
|---|---|
| CN203995356U true CN203995356U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420491645.5U Expired - Fee Related CN203995356U (en) | 2014-08-29 | 2014-08-29 | Dust absorption blackboard eraser |
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| CN (1) | CN203995356U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149527A (en) * | 2014-08-29 | 2014-11-19 | 安徽工程大学 | Dust collecting blackboard eraser |
| CN112406378A (en) * | 2020-12-28 | 2021-02-26 | 宁波工程学院 | Dust-absorbing blackboard eraser |
-
2014
- 2014-08-29 CN CN201420491645.5U patent/CN203995356U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149527A (en) * | 2014-08-29 | 2014-11-19 | 安徽工程大学 | Dust collecting blackboard eraser |
| CN104149527B (en) * | 2014-08-29 | 2016-03-16 | 安徽工程大学 | Dust absorption blackboard eraser |
| CN112406378A (en) * | 2020-12-28 | 2021-02-26 | 宁波工程学院 | Dust-absorbing blackboard eraser |
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