CN105747990B - A kind of bookshelf dust-cleaning equipment for book - Google Patents
A kind of bookshelf dust-cleaning equipment for book Download PDFInfo
- Publication number
- CN105747990B CN105747990B CN201610281065.7A CN201610281065A CN105747990B CN 105747990 B CN105747990 B CN 105747990B CN 201610281065 A CN201610281065 A CN 201610281065A CN 105747990 B CN105747990 B CN 105747990B
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- Prior art keywords
- suction nozzle
- bookshelf
- dust
- cleaning equipment
- hook
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2868—Arrangements for power supply of vacuum cleaners or the accessories thereof
- A47L9/2878—Dual-powered vacuum cleaners, i.e. devices which can be operated with mains power supply or by batteries
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The present invention relates to a kind of bookshelf dust-cleaning equipment for book, belong to cleaner technology field.Which solve existing dust catcher for the dust adsorption effect at the top of the books on bookshelf it is undesirable the problem of.The present invention includes suction nozzle, telescoping tube and main body, and suction nozzle is connected to main body by telescoping tube, and suction nozzle uses vertical structure, is above provided with rotating part, hook, left and right chute, pulley and bothrium；Suction nozzle top is bonded with bookshelf tight, and one end that suction nozzle is connected with telescoping tube is provided with left and right chute, and left and right chute is embedded with the hook that can be horizontally slipped, and hook is placed in bookshelf top panel top；Suction nozzle bottom is provided with the bothrium of dust at the top of absorption books；Button is provided with telescoping tube, roller and pull bar are provided with main body.It realizes the removing of dust at the top of books and the function of saving manpower by increasing the structures such as pulley, hook, vertical bothrium, pull bar.The present invention can be widely used in each macro library and reading environment and use.
Description
Technical field
The present invention relates to a kind of bookshelf dust-cleaning equipment for book, belong to cleaner technology field.
Background technology
Current books dust arrester is mainly similar to common dust catcher outward appearance on the market, is horizontal setting.Though
Right dust catcher has adsorption capacity for the books in library, but it is because the problem of constructing, and can not stretch into the figure of bookshelf
Book top carries out the absorption of internal dust, causes dust only outside on books top just adsorbed and inside unclear.
Moreover, the dust hypotelorism at the top of current dust catcher and books can cause suction nozzle to pollute, hypertelorism can cause absorption affinity
Degree is inadequate, and needs in whole process to hold up act suction nozzle, and the arm of user can be caused to ache, inconvenient for use；Main body of dust collector is whole
In individual work process, if pulled by force, the loose contact of telescoping tube and main body may be realized, causes moving process to fill
The problems such as putting damage.
The content of the invention
It is an object of the invention to overcome drawbacks described above existing for a kind of existing books dust arrester, it is proposed that a kind of bookshelf
Dust-cleaning equipment for book, by increasing the structures such as pulley, hook, vertical bothrium, pull bar, realize the removing of dust and section at the top of books
The function of human-saving.
The present invention is realized using following technical scheme：A kind of bookshelf dust-cleaning equipment for book, including suction nozzle, telescoping tube and
Main body, suction nozzle are connected to main body by telescoping tube, and suction nozzle uses vertical structure, be above provided with rotating part, hook, left and right chute,
Pulley and bothrium, telescoping tube make 360 ° of rotations around rotating part；Suction nozzle top is bonded with bookshelf tight, suction nozzle and telescoping tube phase
One end even is provided with left and right chute, and left and right chute is embedded with the hook that can be horizontally slipped；Suction nozzle bottom is provided with absorption figure
The bothrium of dust at the top of book, the side directions of the parallel suction nozzle of bothrium are set；Button, button and main body phase are provided with telescoping tube
Even；Roller and pull bar are provided with main body, roller is located at dust catcher bottom, and pull bar is arranged at dust catcher side.
Further, using the connection load-bearing effect of hook, suction nozzle presses close to bookshelf top panel lower surface position, and along bookshelf top
Plate length direction does steady movement.By setting roller, suction nozzle can be moved left and right easily along at the top of bookshelf, reduce people
The strength that power is lifted.
Further, it is provided with least one set of pulley on suction nozzle or hook or is not provided with pulley, during enhancing suction nozzle movement
The stability of time.
Further, the pulley at suction nozzle back is in contact with the lower surface of bookshelf top panel, links up with the pulley and bookshelf of connection
The upper surface of top plate is in contact.The moving direction of hook is consistent with the rotating direction of suction nozzle.
Further, an at least sleeve hanger is provided with the chute of left and right.By being brought into close contact for more sleeve hangers and bookshelf, increase
Stability when strong suction nozzle movement.
Further, suction nozzle bottom is provided with least one bothrium.Bothrium is the groove that rule longitudinal direction is set along side,
It is the entrance for adsorbing dust, its quantity is more, and the scope of absorption is bigger.
Further, bothrium is oppositely arranged with the dust at the top of books.The purpose of bothrium is exactly to remove at the top of books
Dust, in order to avoid with too closely contact stain bothrium at the top of books, can only be hung on the bookshelf at the top of books, be separated by one
Segment distance is adsorbed.
Further, at least two groups of gears are provided with button.When bothrium and books are in larger distance, pass through regulating key
On gear, increase the suction of bothrium；When bothrium and books are closer to the distance, by the gear on regulating key, bothrium is reduced
Suction.
Further, high-capacity lithium battery and external power supply joint are provided with main body.When main body and insert row or socket
When distant, its scope used can be increased by the high-capacity lithium battery carried；When surrounding has insert row or socket, lead to
External power supply joint is crossed, except the power supply supply for supplying body can also be powered to high-capacity lithium battery.
The beneficial effects of the invention are as follows：
(1) a kind of bookshelf dust-cleaning equipment for book of the present invention, suction nozzle, hook and pulley is set, realize suction nozzle in bookshelf
It is a certain below top plate that height is set, carry out smooth sliding, avoid it is whole need to hold up the hard work for lifting suction nozzle, reach it is convenient, fast,
Efficiently, labour-saving purpose；
(2) a kind of bookshelf dust-cleaning equipment for book of the present invention, is provided with the suction nozzle being brought into close contact with bookshelf top panel；Pass through
Bothrium is set to considerably reduce the attachment of dust at the top of books with being oppositely arranged at the top of the books on bookshelf, improve reading ring
Border；
(3) a kind of bookshelf dust-cleaning equipment for book of the present invention, is provided with gear, by adjusting gear, can be directed to not
Same books highly carry out the adjustment of different suction；
(4) a kind of bookshelf dust-cleaning equipment for book of the present invention, set and make 360 ° of rotations around rotating part, during use,
Operator need to only adjust rotating part angle, can clean the books of eminence or lower bookshelf, dynamic without climbing to a higher point or bending over etc.
Make, normal station vertical operation, high-effective and labour-saving；
(5) a kind of bookshelf dust-cleaning equipment for book of the present invention, is provided with pull bar, can be while hand-held suction nozzle, can
It is very convenient to pull the movement of main body by pull bar；
(6) a kind of bookshelf dust-cleaning equipment for book of the present invention, high-capacity lithium battery is set, enhances moving range；
(7) a kind of bookshelf dust-cleaning equipment for book of the present invention, its function meet each macro library and reading room enough
The cleaning of dust at the top of books needs, simple and practical, is worth with greatly promotion and application.
Brief description of the drawings
Fig. 1 is one of sucker structure schematic diagram of the present invention.
Fig. 2 is the two of the sucker structure schematic diagram of the present invention.
Fig. 3 is the use state figure of the present invention.
Fig. 4 is the structural representation of the present invention.
In figure：1 suction nozzle；2 telescoping tubes；3 rotating parts；4 hooks；5 or so chutes；6 pulleys；7 bothriums；8 buttons；9 main bodys；10
Roller；11 pull bars；12 books.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment one：
As shown in figure 1, it is the part of suction nozzle 1 of the present invention shown in figure.This part is also the main innovation point of the present invention.
Laterally set because the dust catcher of the current top dust of absorption books 12 all uses, and use vertical suction nozzle 1, that is,
Longitudinal suction nozzle 1 it is seldom.Purpose using vertical suction nozzle 1 is that the whole dusts for pushing up books 12 can be cleaned.
One end that telescoping tube 2 is connected is provided with left and right chute 5 together with least in suction nozzle 1.The purpose of left and right chute 5 be for
Hook 4 is allowed preferably to select the position of the bookshelves of suspension.And the quantity of the hook 4 on left and right chute 5, according to suction nozzle 1
Size is selected.The height of hook 4 can also be adjusted according to the height and pulley 6 of bookshelf.Height is provided with hook 4
Adjustment bolt, it can be adjusted on the spot according to the height of bookshelf by height adjustment bolt.
In addition, the principle of the application is mainly, it is brought into close contact by the top of suction nozzle 1 with bookshelf top panel, it is only necessary to edge
Bookshelf carries out moving left and right suction nozzle 1, you can and it is easily quick to realize the absorption of the top surface dust of books 12, reduce and hold up act
Action.
Embodiment two：
As shown in figure 1, pulley 6 shown in figure needs to be in contact with bookshelf top panel surface, i.e. the back of suction nozzle 1
Pulley 6 contacts with bookshelf top panel lower surface, links up with 4 pulley 6 and the upper surface of bookshelf top panel.Employ setting for pulley 6
Put, be to preferably realize that the part of suction nozzle 1 can steadily be moved below bookshelf top panel.The quantity of pulley 6, according to reality
Border needs to be designed, and can be extended by the form of stickup.In addition, it should be noted that the height of pulley 6 is according to need
Will, it can be adjusted.
It should be noted that pulley 6 is not essential, if requiring that the thickness of suction nozzle 1 is very strict, pulley 6 is
It is omissible.Its existing purpose is for mobile more save trouble and labor.
Embodiment three：
As shown in figure 1, the telescoping tube 2 in figure is not fixedly linked with suction nozzle 1, rotating part 3 is employed.The purpose is to for
The different bookshelf height of adaptation.For example, when bookshelf excessive height, elevated by the way that suction nozzle 1 is held up in user, suction nozzle 1 with
In obtuse angle, and the height of telescoping tube 2 is less than suction nozzle 1 to telescoping tube 2, and suction nozzle 1 is remained and bookshelf is in close contact.If telescoping tube 2
It is fixedly connected with suction nozzle 1, then, can only be by trampling stool if adsorb highly higher and relatively low position
Or be brought into close contact by the croucs holding that could complete to comb one's hair with bookshelf, such consequence is exactly waste of manpower and material resources,
It is unfavorable for working long hours.
Example IV：
As shown in Fig. 2 the bottom of suction nozzle 1 is provided with least one bothrium 7 in figure, the bar number of bothrium 7 determines the model of absorption
Enclose.As a result of vertical suction nozzle 1, so the direction of bothrium 7 is consistent with the longer direction of length, that is, with the side of suction nozzle 1
Direction is consistent.Bothrium 7 is the groove of a rule, and its purpose is to adsorb the top of books 12 to stack the ash for causing to accumulate for a long time
Dirt.Dust catcher existing for prior art is the suction nozzle 1 laterally set, and its adsorbable scope can only be the outside of books 12, especially
When it is on the shelf, due to the obstruction of telescoping tube 2, possible suction nozzle 1 can only extend into the outside 1/3rd of books 12
Place.And by the suction nozzle 1 of vertical structure and with side directions identical bothrium 7, with regard to more satisfactory adsorption effect can be reached.Especially
It is that suction nozzle 1 is oppositely arranged with the top of books 12, and distance is that adsorption effect is most managed when suction nozzle 1 is brought into close contact with bookshelf
Think.
It should be noted that the quantity of bothrium 7 on suction nozzle 1 can carry out inserting mode by side and be extended, with suitable
The needs of different adsorption ranges are answered, the bookshelf requirement of different libraries or reading environment can be met.
Embodiment five：
As shown in figure 3, the use state diagram of the present invention.By setting hook 4, pulley 6, suction nozzle 1 is set closely to paste
Close the downside of bookshelf top panel.Then the bothrium 7 of the bottom of the part of suction nozzle 1 can be oppositely arranged with the dust at the top of books 12, be led to
Startup main body of dust collector 9 is crossed, can be by the suction-operated of bothrium 7, to reach the cleaning work of the top dust of books 12.Due to
The height of books 12 simultaneously differs, so if hand-held suction nozzle 1, which highly carries out height according to books 12, holds up act, can greatly waste
Manpower and time.Although suction nozzle 1 is arranged at the top of bookshelf, may be not ideal enough for the highly too low suction-operated of books 12,
But the size that absorption dynamics can be adjusted by the gear that example below six refers to is overcome.From time saving and energy saving
Angle accounts for, and is optimal by way of being arranged at the top of bookshelf.
It is the accompanying drawing that books 12 coordinate with suction nozzle 1 shown in Fig. 3, user only has in the action to be done of this state
Promote or pull suction nozzle 1 to carry out the movement of left and right along bookshelf.Clear up and complete when each bookshelf, then hold up and lift suction nozzle 1
Come on another bookshelf after fixing hook 4, repeat the above steps again.Compare for the length of each bookshelf
In long library, use of the invention is more particularly important.
Embodiment six：
As shown in figure 4, in the overall structure diagram of the present invention, the part of main body 9 is connected by telescoping tube 2.It is flexible
The portion of the handle of pipe 2 is provided with gear.The adjustment for the absorption dynamics that five kinds of above embodiment refers to is entered by the button 8
Row regulation.As required, it can be provided with and heighten gear, turn down gear and normal gear., can by the setting of different stalls
Meet the needs of absorption dynamics not only to meet to save the energy.In addition, why button 8 is arranged on to the Handheld Division of telescoping tube 2,
Allow for use it is convenient.If being arranged at suction nozzle 1 or main body 9, it will unavoidably lose time, use step
It is more.
Embodiment seven：
As shown in figure 4, the part of main body 9 have also been made the setting of corresponding hommization.If using conventional main body 9, use
During, the notice of user all concentrates on the part of suction nozzle 1 of dust catcher, unavoidably can not be with respect to for the position of main body 9.
When the heavier-weight of main body 9, and when telescoping tube 2 and the again more fragile coupling part of main body 9, pass through neglectful drawing
Pull, it is more likely that cause separation between the two, lose more than gain.In order to avoid the generation of the above situation, pull bar particularly is provided with
11 structures.By the structure of pull bar 11, user operation suction nozzle 1 part on the other hand, hand can be by pulling the drawing of main body 9 in addition
Bar 11, it is possible to accomplish for the overall movement of dust catcher, avoid both it is different when separation situation caused by movement.
It should be noted that the main body 9 of the present invention can also adopt in addition to being moved using pull bar 11 to main body 9
The form of small handcart is put with back belt type or in the bottom of main body 9.Directly it is not very big main body 9 by volume by back belt type
User is carried on the back behind, similar to the appearance for carrying sprayer.And if putting small handcart using the bottom of main body 9, it can keep away
Exempt to be improved in itself for main body 9, reduce hardware costs.Also, the bottom of main body 9 is provided with roller 10, can pass through rolling
The frictional force that the mobile reduction of wheel 10 moves integrally.Although the mode realized is not quite identical, its purpose is to reach main
The synchronizing moving of body 9 and suction nozzle 1, as long as improvement or idea in above-mentioned concept, are protection models of the invention
Enclose.
Embodiment eight：
As shown in figure 4, with advances in technology, the development of high-capacity lithium battery can be satisfied with the short time of main body 9
It is independent to use.Plug or socket can only be used by being limited to the power supply supply of main body 9 before, in order to adsorb library book 12
Dust, it is necessary to drag insert row, or look round for the plug on wall back and forth.And often plug often for main body
9 attaching plug causes irremediable infringement, and the service life that result in dust catcher is reduced.By being embedded with main body 9
High-capacity lithium battery, can greatly strengthen the present invention use range, and except can reduce plug plug number it
Outside, can also be used in around without in the environment of attaching plug.If using portable dust catcher, often its supply of electric power
Time is very short, causes it not practical enough.
When the plug by being plugged in insert row around or wall, in addition to providing power supply supply to suction nozzle 1, may be used also
To be charged to the high-capacity lithium battery in main body 9.By the charging of short time, the present invention can be prolonged only to carry out
Vertical operation.
Certainly, the above is only presently preferred embodiments of the present invention, it is impossible to is considered as limiting the implementation to the present invention
Example scope.The present invention is also not limited to the example above, essential scope of the those skilled in the art in the present invention
Interior made equivalent change and improvement etc., it all should belong in the patent covering scope of the present invention.
Claims (9)
1. a kind of bookshelf dust-cleaning equipment for book, including suction nozzle (1), telescoping tube (2) and main body (9), suction nozzle (1) pass through telescoping tube (2)
It is connected to main body (9), it is characterised in that：Suction nozzle (1) uses vertical structure, is above provided with rotating part (3), hook (4), left and right cunning
Groove (5), pulley (6) and bothrium (7), telescoping tube (2) make 360 ° of rotations around rotating part (3)；Suction nozzle (1) top and bookshelf top are tight
Closely connected conjunction, suction nozzle (1) are provided with left and right chute (5) with one end that telescoping tube (2) is connected, and left and right chute (5) is embedded with can be left
The hook (4) of right slip, hook (4) are placed in bookshelf top panel top；Suction nozzle (1) bottom is provided with dust at the top of absorption books (12)
Bothrium (7), the side directions of the parallel suction nozzle (1) of bothrium (7) set；Be provided with button (8) on telescoping tube (2), button (8) with
Main body (9) is connected；Roller (10) and pull bar (11) are provided with main body (9), roller (10) is located at dust catcher bottom, pull bar (11)
It is arranged at dust catcher side.
A kind of 2. bookshelf dust-cleaning equipment for book according to claim 1, it is characterised in that：Utilize the connection load-bearing of hook (4)
Effect, suction nozzle (1) presses close to bookshelf top panel lower surface position, and does along bookshelf top panel length direction and steadily move.
A kind of 3. bookshelf dust-cleaning equipment for book according to claim 1, it is characterised in that：Set on suction nozzle (1) or hook (4)
It is equipped with least one set of pulley (6).
A kind of 4. bookshelf dust-cleaning equipment for book according to claim 3, it is characterised in that：The pulley (6) at suction nozzle (1) back with
The lower surface of bookshelf top panel is in contact, and the pulley (6) of hook (4) connection is in contact with the upper surface of bookshelf top panel.
A kind of 5. bookshelf dust-cleaning equipment for book according to claim 4, it is characterised in that：Be provided with left and right chute (5) to
A few sleeve hanger (4).
A kind of 6. bookshelf dust-cleaning equipment for book according to claim 1, it is characterised in that：Suction nozzle (1) bottom is provided with least
One bothrium (7).
A kind of 7. bookshelf dust-cleaning equipment for book according to claim 6, it is characterised in that：Bothrium (7) and books (12) top
Dust be oppositely arranged.
A kind of 8. bookshelf dust-cleaning equipment for book according to claim 1, it is characterised in that：Button is provided with least two on (8)
Group gear.
A kind of 9. bookshelf dust-cleaning equipment for book according to claim 1, it is characterised in that：Large Copacity is provided with main body (9)
Lithium battery and external power supply joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281065.7A CN105747990B (en) | 2016-04-29 | 2016-04-29 | A kind of bookshelf dust-cleaning equipment for book |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281065.7A CN105747990B (en) | 2016-04-29 | 2016-04-29 | A kind of bookshelf dust-cleaning equipment for book |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105747990A CN105747990A (en) | 2016-07-13 |
| CN105747990B true CN105747990B (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610281065.7A Active CN105747990B (en) | 2016-04-29 | 2016-04-29 | A kind of bookshelf dust-cleaning equipment for book |
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| Country | Link |
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| CN (1) | CN105747990B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108356031B (en) * | 2018-04-09 | 2023-08-04 | 朱明恺 | Suspension type automatic dust collection device for books |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316223A (en) * | 2000-01-31 | 2001-10-10 | 株式会社日立制作所 | Electric vacuum cleaner |
| CN1698521A (en) * | 2004-05-19 | 2005-11-23 | 乐金电子(天津)电器有限公司 | Dried-wet dual-purpose suction nozzle of vacuum cleaner |
| CN201197692Y (en) * | 2008-04-30 | 2009-02-25 | 亓翠 | Portable dust-cleaning equipment for book |
| CN104799782A (en) * | 2015-05-27 | 2015-07-29 | 遂宁市长丰机械科技有限公司 | Overhead tabletop dust remover |
| CN205947729U (en) * | 2016-04-29 | 2017-02-15 | 王子涵 | Bookshelf books dust remover |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140203055A1 (en) * | 2013-01-22 | 2014-07-24 | Ezequiel Salinas | Reminder Bag Carrier |
-
2016
- 2016-04-29 CN CN201610281065.7A patent/CN105747990B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316223A (en) * | 2000-01-31 | 2001-10-10 | 株式会社日立制作所 | Electric vacuum cleaner |
| CN1698521A (en) * | 2004-05-19 | 2005-11-23 | 乐金电子(天津)电器有限公司 | Dried-wet dual-purpose suction nozzle of vacuum cleaner |
| CN201197692Y (en) * | 2008-04-30 | 2009-02-25 | 亓翠 | Portable dust-cleaning equipment for book |
| CN104799782A (en) * | 2015-05-27 | 2015-07-29 | 遂宁市长丰机械科技有限公司 | Overhead tabletop dust remover |
| CN205947729U (en) * | 2016-04-29 | 2017-02-15 | 王子涵 | Bookshelf books dust remover |
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| Publication number | Publication date |
|---|---|
| CN105747990A (en) | 2016-07-13 |
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