CN105982614A - Floor brush for dust collector - Google Patents

Floor brush for dust collector Download PDF

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Publication number
CN105982614A
CN105982614A CN201510089680.3A CN201510089680A CN105982614A CN 105982614 A CN105982614 A CN 105982614A CN 201510089680 A CN201510089680 A CN 201510089680A CN 105982614 A CN105982614 A CN 105982614A
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CN
China
Prior art keywords
pipe joint
base
vacuum cleaner
opening
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510089680.3A
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Chinese (zh)
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CN105982614B (en
Inventor
洪玉春
田亚波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZHOU HAIQUAN ELECTRICAL APPLIANCES CO Ltd
Original Assignee
SUZHOU HAIQUAN ELECTRICAL APPLIANCES CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN201810978644.6A priority Critical patent/CN109247872B/en
Priority to CN201810978636.1A priority patent/CN109247870B/en
Priority to CN201510089680.3A priority patent/CN105982614B/en
Priority to CN201810978621.5A priority patent/CN109247868A/en
Priority to CN201810978632.3A priority patent/CN109247869A/en
Application filed by SUZHOU HAIQUAN ELECTRICAL APPLIANCES CO Ltd filed Critical SUZHOU HAIQUAN ELECTRICAL APPLIANCES CO Ltd
Priority to CN201810978596.0A priority patent/CN109247867A/en
Priority to CN201810978642.7A priority patent/CN109247871B/en
Publication of CN105982614A publication Critical patent/CN105982614A/en
Application granted granted Critical
Publication of CN105982614B publication Critical patent/CN105982614B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a floor brush for a dust collector. The floor brush comprises a floor brush body and a pipe joint arranged on the floor brush body. The floor brush body comprises an upper cover, a base, a covering plate and a lifting plate with a clearance hole in the center. Side baffles are arranged at the left end and the right end of the base. The outer surface of a bent pipe part at the front end of a bend is provided with an installation groove formed by two flanges, a clamping ring with an opening is installed in the installation groove, the outer surface of the clamping ring is provided with at least two hook parts, and the pipe joint is provided with installation holes for the hook parts to be embedded in. An opening of the bent pipe part is in a horn mouth shape, and the diameter of an outer opening of the bent pipe part is larger than that of a tail opening of the bent pipe part. An opening of the pipe joint is in a horn mouth shape, and the diameter of an outer opening of the pipe joint is larger than that of a tail opening of the pipe joint. The floor brush can be used for cleaning both carpets and the floor, and the application range of the floor brush is greatly expanded; it can be guaranteed that a high vacuum degree is achieved at an air inlet when a brush strip stretches out, and the dust collection efficiency and the suction force of the part in front of a dust collection opening can be improved; besides, a large space capable of being used for designing a dust collection channel exists in the brush body.

Description

Scrubbing brush for vacuum cleaner
Technical field
The present invention relates to a kind of scrubbing brush for vacuum cleaner, belong to cleaning equipment field.
Background technology
In prior art, the scrubbing brush of vacuum cleaner generally include be made up of upper cover and base plate housing, for connecting the pipe joint of this housing and sweep-up pipe, upper cover and base plate form, after fastening, the air-suction channel being connected with this pipe joint, have the inlet scoop towards ground on base plate, ground dust can be sucked via air-suction channel the dust-separating appliance of vacuum cleaner.When the swipe of existing dust-absorbing floor brush and bristle have elevating function simultaneously, often have the disadvantage that (1), bristle or leather strap need be divided into two parts and lay respectively at dust absorbing air passage both sides, and swipe is positioned at both sides and can reduce the suction before suction port, dust collection efficiency is caused to decline, this drawback fails to cause the attention of those skilled in the art, and the space that can be used for designing dust absorption passage in (2), the number of slots added in ground brush body dust absorption passage and brush body is narrow;Secondly, existing base and dust absorption passage are not an entirety, and its dust absorbing air passage is right angle around the corner, and when this design causes vacuum cleaner to use, noise is relatively big and suction is decayed more herein;Again, the design of existing vacuum cleaner is often paid attention to vacuum cleaner inner chamber body and is cleaned, and in but have ignored ground brush body, dust absorption passage cleans with tube chamber in pipe joint, causes upstream, air channel to keep a large amount of dirt and antibacterial, and the dirt immune scope that it is hidden is big.
Summary of the invention
It is an object of the present invention to provide a kind of scrubbing brush for vacuum cleaner, this scrubbing brush achieves bend pipe and pipe joint seamless seal connects, and the space that can be used for designing dust absorption passage in improving the suction before dust collection efficiency, suction port and dust collection efficiency, and brush body is bigger.
For reaching above-mentioned purpose, the technical solution used in the present invention is:
A kind of scrubbing brush for vacuum cleaner, including ground brush body and the pipe joint being arranged in ground brush body, described ground brush body includes that upper cover, base, covering plate and central authorities have the lifter plate of resigning hole, it is characterized in that: also include air duct cover board, in this air duct cover board embeds resigning hole and form suction port and dust absorption passage respectively with base openings and lobe clamping, the tube chamber of described suction port dust absorption passage with pipe joint by being positioned at described ground brush body connects, and described base upper surface has 2 leads;
In described upper cover, both sides are respectively fixed with left and right gripper shoe, and the switch lever two ends between described upper cover and lifter plate are rotatably mounted in the through hole of left and right gripper shoe, and this switch lever is provided with button and and slide plate;
The front end face of described lifter plate and rear end face are respectively provided with forward recess and rearward recess, and this forward recess and rearward recess are embedded with swipe, and this lifter plate upper surface has 2 containing cavities, 2 pilot holes and the chute corresponding with described slide plate;
In the pilot hole embedding lifter plate of described base, in the containing cavity of described lifter plate, elasticity part is installed, and elasticity part is between containing cavity and described base, when switch lever rotates about the axis thereof, slide plate moves along the inclined-plane of described chute, thus promoting the swipe in forward recess, rearward recess to stretch out the lower surface of described base, the left and right end of described base is provided with side shield;
The bending tube portion outer surface being positioned at described bend pipe front end has the mounting groove formed by 2 flanges, one collar with opening is installed in described mounting groove, described collar outer surface has at least 2 pothooks, described pipe joint has the installing hole embedded for pothook, the opening in described bending tube portion is horn mouth, at bending tube portion collar extension, diameter is greater than diameter at the mouth of end, the opening of described pipe joint is horn mouth, at pipe joint collar extension, diameter is greater than at its end mouth at diameter, and bending tube portion collar extension diameter at pipe joint collar extension at diameter and end mouth between diameter.
In technique scheme, further improved plan is as follows:
1., as preferably, a bolt axle runs through bottom pipe joint, bottom the lobe of base and the respective through hole of covering plate, thus connecting tube joint, base and covering plate pipe joint can be rotated around bolt axle.
2. as preferably, base and air duct cover board the suction port both sides formed are smooth arcwall face.
3., as preferably, the dust absorption passage corner of described ground brush body is shaped as arc.
4., as preferably, it is fastened and connected by a pair cooperate bayonet socket and grab fastening in described air duct cover board embeds resigning hole and with base.
5., as preferably, described chute and slide plate are right at least provided with two, lay respectively at described dust absorption passage both sides.
6., as preferably, the inclined-plane of described chute is provided with at least one cascaded surface.
7., as preferably, described 2 leads lay respectively at air duct cover board both sides, and described 2 pilot holes lay respectively at resigning hole both sides.
8. as preferably, described bolt axle two ends and be positioned at lobe both sides and be provided with roller.
9., as preferably, the end of described pothook is inclined-plane.
Technical scheme compared with prior art has the following advantages and effect:
nullThe present invention is for the scrubbing brush of vacuum cleaner,Its vacuum cleaner swipe and bristle choose whether lifting according to use occasion,The bending tube portion outer surface of its bend pipe front end has the mounting groove formed by 2 flanges,One collar with opening is installed in described mounting groove,Described collar outer surface has at least 2 pothooks,Described pipe joint has the installing hole embedded for pothook,The opening in described bending tube portion is horn mouth,At bending tube portion collar extension, diameter is greater than diameter at the mouth of end,The opening of described pipe joint is horn mouth,At pipe joint collar extension, diameter is greater than diameter at its end mouth,And at bending tube portion collar extension diameter at pipe joint collar extension at diameter and end mouth between diameter,Base is left、Right-hand member is provided with side shield,Achieve bend pipe and pipe joint seamless seal connects,Improve dust collection efficiency、Suction before suction port and maintenance air inlet have higher vacuum,It is also convenient for installing,And the space that can be used for designing dust absorption passage in brush body is bigger;Secondly, shift bar is pulled accessible, and when shift bar lifts, bend pipe connects the adapter of 1M, lifts scrubbing brush and freely falls at 1M, pats scrubbing brush 7 times, and shift bar is without bounce-back;And base and dust absorption passage are an entirety, its dust absorbing air passage is arc-shaped around the corner, it is ensured that the smoothness of air-flow, and when this design causes vacuum cleaner to use, noise is less and suction is decayed less herein;Again, form suction port and dust absorption passage respectively in this air duct cover board of the present invention embeds resigning hole and with base openings and lobe clamping, thus be conducive to dust absorption passage in the ground brush body of upstream is carried out with tube chamber in pipe joint.
Accompanying drawing explanation
Accompanying drawing 1 is used for the scrubbing brush partial exploded view one of vacuum cleaner for the present invention;
Accompanying drawing 2 is used for upper cover and the switch lever structural representation of the scrubbing brush of vacuum cleaner for the present invention;
Accompanying drawing 3 is used for the scrubbing brush partial exploded view two of vacuum cleaner for the present invention;
Accompanying drawing 4 is used for the superstructure schematic diagram of the scrubbing brush of vacuum cleaner for the present invention;
Accompanying drawing 5 is used for base and the duct cover plate structure of air schematic diagram of the scrubbing brush of vacuum cleaner for the present invention;
What accompanying drawing 6 was accompanying drawing 5 looks up structural representation;
Accompanying drawing 7 is used for the lifter plate structural representation of the scrubbing brush of vacuum cleaner for the present invention;
Accompanying drawing 8 is used for scrubbing brush bend pipe and the pipe joint structure schematic diagram of vacuum cleaner for the present invention.
In the figures above: 1, ground brush body;2, pipe joint;3, upper cover;31, left support plate;32, right support plate;4, base;41, opening;42, lobe;5, covering plate;6, lifter plate;61, resigning hole;62, forward recess;63, rearward recess;7, air duct cover board;8, suction port;9, dust absorption passage;10, lead;11, switch lever;111, button;112, slide plate;12, swipe;13, containing cavity;14, pilot hole;15, chute;151, cascaded surface;16, elasticity part;17, bolt axle;18, bayonet socket;19, grab;20, roller;21, bend pipe;22, bending tube portion;23, flange;24, mounting groove;25, collar;251, opening;26, pothook;27, installing hole.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the invention will be further described:
Embodiment: a kind of scrubbing brush for vacuum cleaner, including ground brush body 1 and the pipe joint 2 being arranged in ground brush body 1, described ground brush body 1 includes that upper cover 3, base 4, covering plate 5 and central authorities have the lifter plate 6 of resigning hole 61, it is characterized in that: also include air duct cover board 7, in this air duct cover board 7 embeds resigning hole 61 and form suction port 8 and dust absorption passage 9 respectively with base 4 opening 41 and lobe 42 clamping, the tube chamber of the described suction port 8 dust absorption passage 9 with pipe joint 2 by being positioned at described ground brush body 1 connects, and described base 4 upper surface has 2 leads 10;
In described upper cover 3, both sides are respectively fixed with left and right gripper shoe 31,32, and switch lever 11 two ends between described upper cover 3 and lifter plate 6 are rotatably mounted in the through hole of left and right gripper shoe 31,32, this switch lever 11 be provided with button 111 and with slide plate 112;
The front end face of described lifter plate 6 and rear end face are respectively provided with forward recess 62 and rearward recess 63, and this forward recess 62 and rearward recess 63 are embedded with swipe 12, and this lifter plate 6 upper surface has 13,2 pilot holes 14 of 2 containing cavities and the chute 15 corresponding with described slide plate 112;
In the pilot hole 14 of 10 embedding lifter plates 6 of described base 4, in the containing cavity 13 of described lifter plate 6, elasticity part 16 is installed, and elasticity part 16 is between containing cavity 13 and described base 4, when switch lever 11 rotates about the axis thereof, slide plate 112 moves along the inclined-plane of described chute 15, thus promoting the swipe 12 in forward recess 62, rearward recess 63 to stretch out the lower surface of described base 4, the described left and right end of base 4 is provided with side shield 28;
One bolt axle 17 runs through bottom pipe joint 2, bottom the lobe 42 of base 4 and the respective through hole of covering plate 5, thus connecting tube joint 2, base 4 and covering plate 5 pipe joint 2 can be rotated around bolt axle 17, base 4 and air duct cover board 7 suction port 8 both sides formed are smooth arcwall face;
Bending tube portion 22 outer surface being positioned at described bend pipe 21 front end has the mounting groove 24 formed by 2 flanges 23, one collar 25 with opening 251 is installed in described mounting groove 24, described collar 25 outer surface has at least 2 pothooks 26, described pipe joint 2 has the installing hole 27 embedded for pothook 26, the opening in described bending tube portion 22 is horn mouth, at bending tube portion 22 collar extension, diameter is greater than diameter at the mouth of end, the opening of described pipe joint 2 is horn mouth, at pipe joint 2 collar extension, diameter is greater than diameter at its end mouth, and at bending tube portion 22 collar extension diameter at pipe joint 2 collar extension at diameter and end mouth between diameter.
Dust absorption passage 9 corner of above-mentioned ground brush body 1 is shaped as arc.
It is fastened and connected by cooperating bayonet socket 18 for a pair and grab 19 fastens in above-mentioned air duct cover board 7 embeds resigning hole 61 and with base 4.
Above-mentioned chute 15 and slide plate 112 are right at least provided with two, lay respectively at described dust absorption passage 9 both sides.
The inclined-plane of above-mentioned chute 15 is provided with at least one cascaded surface 151.
Above-mentioned 2 leads lay respectively at air duct cover board both sides, and described 2 pilot holes 14 lay respectively at resigning hole both sides.
Above-mentioned bolt axle 17 two ends and be positioned at lobe 42 both sides and be provided with roller 20, the end of above-mentioned pothook 26 is inclined-plane.
Use above-mentioned when the scrubbing brush of vacuum cleaner, achieve bend pipe and pipe joint seamless seal connects, improve the suction before dust collection efficiency, suction port and maintain air inlet to have higher vacuum, being also convenient for installing, and the space that can be used for designing dust absorption passage in brush body is bigger;Secondly, shift bar is pulled accessible, and when shift bar lifts, bend pipe connects the adapter of 1M, lifts scrubbing brush and freely falls at 1M, pats scrubbing brush 7 times, and shift bar is without bounce-back;And base and dust absorption passage are an entirety, its dust absorbing air passage is arc-shaped around the corner, it is ensured that the smoothness of air-flow, and when this design causes vacuum cleaner to use, noise is less and suction is decayed less herein;Again, form suction port and dust absorption passage respectively in this air duct cover board of the present invention embeds resigning hole and with base openings and lobe clamping, thus be conducive to dust absorption passage in the ground brush body of upstream is carried out with tube chamber in pipe joint.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalence changes made according to spirit of the invention or modification, all should contain within protection scope of the present invention.

Claims (10)

1. the scrubbing brush for vacuum cleaner, including ground brush body (1), the pipe joint (2) being arranged in ground brush body (1) and bend pipe (21), described ground brush body (1) includes upper cover (3), base (4), covering plate (5) and central authorities have the lifter plate (6) of resigning hole (61), it is characterized in that: also include air duct cover board (7), in this air duct cover board (7) embeds resigning hole (61) and form suction port (8) and dust absorption passage (9) respectively with base (4) opening (41) and lobe (42) clamping, the tube chamber of the described suction port (8) dust absorption passage (9) with pipe joint (2) by being positioned at described ground brush body (1) connects, described base (4) upper surface has 2 leads (10);
Described upper cover (3) interior both sides are respectively fixed with left and right gripper shoe (31,32), switch lever (11) two ends being positioned between described upper cover (3) and lifter plate (6) are rotatably mounted to the through hole of left and right gripper shoe (31,32), this switch lever (11) be provided with button (111) and with slide plate (112);
The front end face of described lifter plate (6) and rear end face are respectively provided with forward recess (62) and rearward recess (63), this forward recess (62) and rearward recess (63) are embedded with swipe (12), and this lifter plate (6) upper surface has 2 containing cavities (13), 2 pilot holes (14) and the chute (15) corresponding with described slide plate (112);
The lead (10) of described base (4) embeds in the pilot hole (14) of lifter plate (6), in the containing cavity (13) of described lifter plate (6), elasticity part (16) is installed, and elasticity part (16) is positioned between containing cavity (13) and described base (4), when switch lever (11) rotates about the axis thereof, slide plate (112) moves along the inclined-plane of described chute (15), thus promote forward recess (62), swipe (12) in rearward recess (63) stretches out the lower surface of described base (4), described base (4) is left, right-hand member is provided with side shield (28);
Bending tube portion (22) outer surface being positioned at described bend pipe (21) front end has the mounting groove (24) formed by 2 flanges (23), one collar (25) with opening (251) is installed in described mounting groove (24), described collar (25) outer surface has at least 2 pothooks (26), described pipe joint (2) has the installing hole (27) embedded for pothook (26), the opening of described bending tube portion (22) is horn mouth, at bending tube portion (22) collar extension, diameter is greater than diameter at the mouth of end, the opening of described pipe joint (2) is horn mouth, at pipe joint (2) collar extension, diameter is greater than diameter at its end mouth, and diameter is positioned at pipe joint (2) collar extension at diameter and end mouth between diameter at bending tube portion (22) collar extension.
Scrubbing brush for vacuum cleaner the most according to claim 1, it is characterized in that: include a bolt axle (17), this bolt axle (17) runs through pipe joint (2) bottom, lobe (42) bottom of base (4) and covering plate (5) respective through hole, thus connecting tube joint (2), base (4) and covering plate (5) pipe joint (2) can be rotated around bolt axle (17).
Scrubbing brush for vacuum cleaner the most according to claim 1, it is characterised in that: described suction port (8) both sides formed by base (4) and air duct cover board (7) are smooth arcwall face.
Scrubbing brush for vacuum cleaner the most according to claim 1, it is characterised in that: dust absorption passage (9) corner of described ground brush body (1) is shaped as arc.
Scrubbing brush for vacuum cleaner the most according to claim 3, it is characterised in that: it is fastened and connected in described air duct cover board (7) embeds resigning hole (61) and with base (4) and is fastened by a pair bayonet socket that cooperates (18) and grab (19).
Scrubbing brush for vacuum cleaner the most according to claim 1, it is characterised in that: described chute (15) and slide plate (112) are right at least provided with two, lay respectively at described dust absorption passage (9) both sides.
Scrubbing brush for vacuum cleaner the most according to claim 1, it is characterised in that: the inclined-plane of described chute (15) is provided with at least one cascaded surface (151).
Scrubbing brush for vacuum cleaner the most according to claim 1, it is characterised in that: described 2 leads lay respectively at air duct cover board both sides, and described 2 pilot holes (14) lay respectively at resigning hole both sides.
Scrubbing brush for vacuum cleaner the most according to claim 1, it is characterised in that: described bolt axle (17) two ends and be positioned at lobe (42) both sides and be provided with roller (20).
Scrubbing brush for vacuum cleaner the most according to claim 1, it is characterised in that: the end of described pothook (26) is inclined-plane.
CN201510089680.3A 2015-02-27 2015-02-27 Scrubbing brush for dust catcher Active CN105982614B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CN201810978636.1A CN109247870B (en) 2015-02-27 2015-02-27 Dust-absorbing floor brush
CN201510089680.3A CN105982614B (en) 2015-02-27 2015-02-27 Scrubbing brush for dust catcher
CN201810978621.5A CN109247868A (en) 2015-02-27 2015-02-27 Dust catcher low noise scrubbing brush
CN201810978632.3A CN109247869A (en) 2015-02-27 2015-02-27 Big suction floor brush of dust collector
CN201810978644.6A CN109247872B (en) 2015-02-27 2015-02-27 Floor brush of dust collector
CN201810978596.0A CN109247867A (en) 2015-02-27 2015-02-27 Lifting type floor brush for dust collector
CN201810978642.7A CN109247871B (en) 2015-02-27 2015-02-27 Floor brush of dust collector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510089680.3A CN105982614B (en) 2015-02-27 2015-02-27 Scrubbing brush for dust catcher

Related Child Applications (6)

Application Number Title Priority Date Filing Date
CN201810978636.1A Division CN109247870B (en) 2015-02-27 2015-02-27 Dust-absorbing floor brush
CN201810978632.3A Division CN109247869A (en) 2015-02-27 2015-02-27 Big suction floor brush of dust collector
CN201810978596.0A Division CN109247867A (en) 2015-02-27 2015-02-27 Lifting type floor brush for dust collector
CN201810978644.6A Division CN109247872B (en) 2015-02-27 2015-02-27 Floor brush of dust collector
CN201810978642.7A Division CN109247871B (en) 2015-02-27 2015-02-27 Floor brush of dust collector
CN201810978621.5A Division CN109247868A (en) 2015-02-27 2015-02-27 Dust catcher low noise scrubbing brush

Publications (2)

Publication Number Publication Date
CN105982614A true CN105982614A (en) 2016-10-05
CN105982614B CN105982614B (en) 2018-09-25

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ID=57037839

Family Applications (7)

Application Number Title Priority Date Filing Date
CN201810978596.0A Pending CN109247867A (en) 2015-02-27 2015-02-27 Lifting type floor brush for dust collector
CN201810978636.1A Active CN109247870B (en) 2015-02-27 2015-02-27 Dust-absorbing floor brush
CN201810978642.7A Active CN109247871B (en) 2015-02-27 2015-02-27 Floor brush of dust collector
CN201810978632.3A Pending CN109247869A (en) 2015-02-27 2015-02-27 Big suction floor brush of dust collector
CN201810978644.6A Active CN109247872B (en) 2015-02-27 2015-02-27 Floor brush of dust collector
CN201510089680.3A Active CN105982614B (en) 2015-02-27 2015-02-27 Scrubbing brush for dust catcher
CN201810978621.5A Pending CN109247868A (en) 2015-02-27 2015-02-27 Dust catcher low noise scrubbing brush

Family Applications Before (5)

Application Number Title Priority Date Filing Date
CN201810978596.0A Pending CN109247867A (en) 2015-02-27 2015-02-27 Lifting type floor brush for dust collector
CN201810978636.1A Active CN109247870B (en) 2015-02-27 2015-02-27 Dust-absorbing floor brush
CN201810978642.7A Active CN109247871B (en) 2015-02-27 2015-02-27 Floor brush of dust collector
CN201810978632.3A Pending CN109247869A (en) 2015-02-27 2015-02-27 Big suction floor brush of dust collector
CN201810978644.6A Active CN109247872B (en) 2015-02-27 2015-02-27 Floor brush of dust collector

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN201810978621.5A Pending CN109247868A (en) 2015-02-27 2015-02-27 Dust catcher low noise scrubbing brush

Country Status (1)

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CN (7) CN109247867A (en)

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CN102119842A (en) * 2011-03-18 2011-07-13 苏州市海泉电器有限公司 Floor brush device for dust cleaner

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109247867A (en) * 2015-02-27 2019-01-22 苏州市海泉电器有限公司 Lifting type floor brush for dust collector

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CN109247870B (en) 2021-01-15
CN109247872A (en) 2019-01-22
CN109247868A (en) 2019-01-22
CN109247867A (en) 2019-01-22
CN109247871B (en) 2021-01-15
CN109247869A (en) 2019-01-22
CN109247872B (en) 2020-11-24
CN105982614B (en) 2018-09-25
CN109247870A (en) 2019-01-22
CN109247871A (en) 2019-01-22

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