CN109044200A - A kind of suction pipe assembly and dust catcher for dust catcher - Google Patents
A kind of suction pipe assembly and dust catcher for dust catcher Download PDFInfo
- Publication number
- CN109044200A CN109044200A CN201810784912.0A CN201810784912A CN109044200A CN 109044200 A CN109044200 A CN 109044200A CN 201810784912 A CN201810784912 A CN 201810784912A CN 109044200 A CN109044200 A CN 109044200A
- Authority
- CN
- China
- Prior art keywords
- suction pipe
- connecting shaft
- connecting tube
- pipe assembly
- adjacent
- 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
Links
- 239000000428 dust Substances 0.000 title claims abstract description 29
- 238000005452 bending Methods 0.000 claims abstract description 18
- 239000011324 bead Substances 0.000 claims description 22
- 230000014759 maintenance of location Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005201 scrubbing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
Classifications
-
- 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
- A47L9/24—Hoses or pipes; Hose or pipe couplings
- A47L9/242—Hose or pipe couplings
- A47L9/244—Hose or pipe couplings for telescopic or extensible hoses or pipes
-
- 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
- A47L9/24—Hoses or pipes; Hose or pipe couplings
- A47L9/242—Hose or pipe couplings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Vacuum Cleaner (AREA)
Abstract
A kind of suction pipe assembly and dust catcher for dust catcher provided by the invention, hard outer tube include that at least two connecting tubes are formed by connecting；Adjacent two connecting tube is connected by connection structure, and connection structure includes: sliding slot, is set to the outside circumference of adjacent two connecting tubes, one side, and extending direction is parallel to the extending direction for being correspondingly connected with pipe；Another party of adjacent two connecting tube is arranged in interconnecting piece, and along the extension of pipe extending direction is correspondingly connected with, interconnecting piece is slidably mounted on the outside of sliding slot by connecting shaft；Adjacent two connecting tube can be rotated around connecting shaft；Position limiting structure has and is fixed with adjacent two connecting tube to limit the first state of the two relative position and unlock the second state to allow the two relative motion at least one party in adjacent two connecting tube.In the technical program, connecting shaft is in sliding fit with the sliding chute, it can be achieved that suction pipe assembly length is adjustable.It is rotated relative to connecting shaft, realizes the bending of suction pipe assembly.Structure is simple, and good reliability, manufacturing cost is low, has a wide range of application.
Description
Technical field
The present invention relates to field cleaning device technical fields, and in particular to a kind of suction pipe assembly for dust catcher, this hair
It is bright while being related to a kind of dust catcher.
Background technique
Dust catcher is relatively conventional burnisher.For integrated real vacuum cleaner, generally include that suction can be generated
Dust collector host, by dust collector host generate suction suck foreign scrubbing brush, and connection dust collector host and
The suction pipe of scrubbing brush.
Suction pipe includes hard outer tube and the hose that is set in hard outer tube.Hose is the air duct of dust catcher.Hard
Long tube is set to outside hose, is played a supportive role to hose, so that suction pipe and scrubbing brush keep relatively fixed position.Due to hard
The length and extension angle of outer tube can not be adjusted, thus cause operator be inconvenient to clean bed or sofa bottom surface etc. it is lower, compared with
By inner position, and be inconvenient to clear up higher position, using with significant limitations.
In consideration of it, Publication No. CN102727139B Chinese invention patent discloses one kind for dust catcher in the prior art
Telescoping tube, including inner and outer tubes, inner tube be plugged in outer tube, and can slide and position in outer tube；The outer tube
It is made of the first outer tube and the second outer tube, the two is connected by bending mechanism；Telescopic hose is equipped in the outer tube,
The telescopic hose one end is connected with inner tube, and the other end and the second outer tube are connected；It is equipped between first outer tube and the second outer tube
For accommodating the cavity of inner tube or telescopic hose；Inner tube position in the cavity when, the first outer tube is lined up with the second outer tube
One line, telescopic hose position in the cavity when, by bending mechanism phase occurs for first outer tube and the second outer tube
To rotation.
Although the bending of dust collector suction pipe may be implemented in above-mentioned patent, but still have certain limitation.Firstly, being only capable of
Realize bending, bending position is fixed, and is provided only with one, and suction pipe form is limited, using with certain limitation, secondly, folding
Bender structure is excessively complicated, leads to suction pipe increased costs, and reliability not can guarantee.Again, it is stored after bending and still occupies larger sky
Between, it has not been convenient to it stores.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that suction pipe in the prior art is overcome to be only capable of bending, bending position
It is fixed, and be only capable of causing still to occupy larger space after bending, it has not been convenient to store using with limitation around a place bending
Defect, and, higher cost caused by bending structure is complicated, the defect that reliability not can guarantee is used for provide one kind
The suction pipe assembly of dust catcher.Invention also provides a kind of dust catchers.
A kind of suction pipe assembly for dust catcher provided by the invention, comprising:
Hose, for scalable and bent soft pipeline structure；
Hard outer tube is sheathed on the hose, including at least two connecting tubes are formed by connecting；Adjacent two connecting tube is logical
Connection structure connection is crossed, the connection structure includes:
Sliding slot, is set to the outside circumference of adjacent two one side of connecting tube, and extending direction is parallel to the corresponding connection
The extending direction of pipe；
Another party of adjacent two connecting tube is arranged in interconnecting piece, extends along the correspondence connecting tube extending direction, described
Interconnecting piece is slidably mounted on the outside of the sliding slot by connecting shaft；Adjacent two connecting tube can be rotated around the connecting shaft；
Position limiting structure, have fixed with adjacent two connecting tube with both limit the first state of relative position and
The second state to allow the two relative motion is unlocked at least one party in adjacent two connecting tube.
Optionally, the sliding slot is the through slot for penetrating through the connecting tube side wall, and the connecting shaft is along the connecting shaft axis
Line is slideably positioned in the interconnecting piece and the sliding slot, and the position limiting structure is set to the connecting shaft, with the connecting shaft edge
The first state and second state are respectively in axis sliding process.
Optionally, the position limiting structure includes retention bead, and the interconnecting piece corresponds to the connecting shaft and the connection
Pipe corresponds to the sliding slot end positions and is provided with limiting slot；The interconnecting piece using the connecting shaft as the center of circle and the connecting tube with
The sliding slot both ends are uniformly arranged multiple for the center of circle；It is into and out with retention bead described in the connecting shaft sliding process
The limiting slot of the two adjacent connecting tube alignment.
Optionally, the position limiting structure includes the multiple retention beads radially extended from the connecting shaft, the limit convex
It rises and is arranged relative to the connecting shaft uniform intervals；The limiting slot corresponds to the retention bead arrangement shape setting.
Optionally, the retention bead is provided with four of 90 degree in interval, there are four the limiting slot is correspondingly arranged, wherein
One limiting slot is overlapped with the sliding slot.
Optionally, the end of the retention bead is provided with the bending part close to limiting slot bending.
Optionally, two institutes of the limiting slot setting in the corresponding two adjacent connecting tubes are provided in the connecting shaft
State retention bead.
Optionally, the connecting shaft corresponds to and is provided with press-button structure on the outside of the interconnecting piece.
Optionally, the spring for being sheathed on the connecting shaft is provided between the position limiting structure and the connecting tube, in institute
The position limiting structure is in first state under the action of stating spring.
Optionally, the two sides of the relatively described connecting tube axis are symmetrically arranged with the interconnecting piece and the sliding slot, the company
The connecting shaft is provided in socket part.
Optionally, position limiting structure, the connection of the not set position limiting structure are at least provided in the connecting shaft of side
Axis is fixedly installed in the interconnecting piece.
Optionally, including at least three connecting tubes are formed by connecting, and intermediate described connecting tube one end is provided with the cunning
Slot, the other end are provided with the interconnecting piece.
Optionally, the hose is bellows.
Invention also provides a kind of dust catchers, including the suction pipe assembly described in any of the above embodiments for dust catcher.
Technical solution of the present invention has the advantages that
A kind of suction pipe assembly for dust catcher provided by the invention, hard outer tube are connected including at least two connecting tubes
It forms；Adjacent two connecting tube is connected by connection structure, and the connection structure includes: sliding slot, is set to described in adjacent two
The outside circumference of one side of connecting tube, extending direction are parallel to the extending direction of the corresponding connecting tube；Interconnecting piece, setting adjacent two
Another party of the connecting tube extends along the correspondence connecting tube extending direction, and the interconnecting piece is slidably installed by connecting shaft
In the outside of the sliding slot；Adjacent two connecting tube can be rotated around the connecting shaft；Position limiting structure, have with described in adjacent two
Connecting tube is fixed to limit the first state of the two relative position and unlock at least one party in adjacent two connecting tube
To allow the second state of the two relative motion.In the technical program, connecting shaft is in sliding fit with the sliding chute, it can be achieved that suction pipe assembly
Length is adjustable.It is rotated relative to connecting shaft, realizes the bending of suction pipe assembly.User is set to adjust the shape of suction pipe assembly as needed
State, structure is simple, and good reliability, manufacturing cost is low, has a wide range of application.And hard outer tube may be provided with multiple connecting tubes, with
Improve the applicability of suction pipe assembly.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the suction pipe assembly explosive view provided in the first embodiment of the invention；
Fig. 2 is the structural schematic diagram of the hard outer tube provided in the first embodiment of the invention；
Fig. 3 is the structural schematic diagram of the connecting tube provided in the first embodiment of the invention；
Fig. 4 is the structural schematic diagram of the connecting shaft and retention bead that provide in the first embodiment of the invention.
Description of symbols:
1- hose, 2- connecting tube, 3- interconnecting piece, 4- sliding slot, 5- limiting slot, 6- press-button structure, 7- connecting shaft, 8- limit convex
It rises.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 to Fig. 4 shows a kind of suction pipe assembly embodiment for dust catcher provided by the invention.
Dust collector suction pipe includes hose 1 and hard outer tube.The hose 1 is the sealing fluid channel of dust catcher, the present embodiment
It is middle to use bellows, it should be apparent that, other scalable and bent soft pipeline structures can be used in hose 1.
Hard outer tube is formed by connecting by four section connecting tubes 2, is sheathed on 1 outside of hose, is played support to hose 1 and protection is made
With.Adjacent two connecting tube 2 is connected by connection structure.
Specifically, the periphery of adjacent two connecting tubes, 2 one side is provided with sliding slot 4, and sliding slot 4 is through slot, extends along connecting tube 2
Direction extends set distance.Another party's connecting tube 2 is provided with interconnecting piece 3, and interconnecting piece 3 extends along 2 extending direction of pipe is correspondingly connected with,
Positioned at 4 outside of sliding slot, end is slidably mounted on sliding slot 4 by connecting shaft 7.
Relative to 2 axisymmetrical of connecting tube, two sliding slots 4 and interconnecting piece 3.The connecting shaft 7 of side interconnecting piece 3 is fixedly installed,
End is provided with stopper projection.The connecting shaft 7 of the other side is slideably positioned in interconnecting piece 3 and sliding slot 4 along own axes, is arranged thereon
There is retention bead 8.Retention bead 8 is radially extended relative to connecting shaft 7, is spaced there are four 90 degree of settings.Interconnecting piece 3 is with connecting shaft
7 positions are that the center of circle and connecting tube 2 using 4 both ends end of sliding slot are provided with radially extend four limiting slots 5, adjacent limit as the center of circle
Position slot 5 is spaced 90 degree.Four limiting slots 5 that corresponding sliding slot 4 is arranged, one of them described sliding slot 4 are overlapped.
During slideing along the axis with connecting shaft 7, retention bead 8 and the two limiting slot 5 cooperate, with both fixed opposite position
It sets, i.e. first state.Retention bead 8 and at least one party's limiting slot 5 are detached from, so that the two can be with free movement.That is the second state.
Press-button structure 6 is provided on the outside of 7 corresponding connection parts 3 of connecting shaft.Bullet is provided between position limiting structure and connecting tube 2
Spring, position limiting structure is in first state under the action of the spring.
The fixed hose 1 of hard outer tube connecting tube of end 2 is simultaneously connect with scrubbing brush, and head end connecting tube 2 is connect with dust suction machine host.
2 both ends of connecting tube among the two are respectively arranged with sliding slot 4 and connecting tube 2.
Connecting shaft 7 is slidably matched with sliding slot 4, it can be achieved that suction pipe assembly length is adjustable.It rotates, realizes relative to connecting shaft 7
The bending of suction pipe assembly.Hard outer tube is provided with multiple connecting tubes 2, and user is made to adjust the state of suction pipe assembly as needed, with
Though realize bed bottom and sofa bottom etc. below distance be it is remote or close, can realize do not have to bend over can clean effect,
And structure is simple, and manufacturing cost is low.
As another embodiment, retention bead 8 can be respectively set in the limiting slot 5 of corresponding two connecting tubes 2.
As another embodiment, for the setting number of retention bead 8, do not limit to four, can be other numbers,
Such as six of interval 60, the basic angle that adjusts only are set.
Present invention simultaneously provides a kind of dust catchers, including above-mentioned suction pipe assembly.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (14)
1. a kind of suction pipe assembly for dust catcher characterized by comprising
Hose (1), for scalable and bent soft pipeline structure；
Hard outer tube is sheathed on the hose (1), including at least two connecting tubes (2) are formed by connecting；Adjacent two connecting tube
(2) it is connected by connection structure, the connection structure includes:
Sliding slot (4), is set to the outside circumference of adjacent two (2) one side of connecting tube, and extending direction is parallel to the corresponding company
Take over the extending direction of (2)；
Another party of adjacent two connecting tube (2) is arranged in interconnecting piece (3), and along the correspondence connecting tube (2), extending direction prolongs
It stretches, the interconnecting piece (3) is slidably mounted on the outside of the sliding slot (4) by connecting shaft (7)；Adjacent two connecting tube (2)
It can be rotated around the connecting shaft (7)；
Position limiting structure, have fixed with adjacent two connecting tube (2) with both limit the first state of relative position and
The second state to allow the two relative motion is unlocked at least one party in adjacent two connecting tube (2).
2. suction pipe assembly according to claim 1, it is characterised in that: the sliding slot (4) is to penetrate through connecting tube (2) side
The through slot of wall, the connecting shaft (7) are slideably positioned in the interconnecting piece (3) and the sliding slot along the connecting shaft (7) axis
(4), the position limiting structure is set to the connecting shaft (7), and institute is respectively at during slideing along the axis with the connecting shaft (7)
State first state and second state.
3. suction pipe assembly according to claim 2, it is characterised in that: the position limiting structure includes retention bead (8), described
The corresponding connecting shaft (7) of interconnecting piece (3) and corresponding sliding slot (4) end positions of the connecting tube (2) are provided with limit
Slot (5)；It is circle that the interconnecting piece (3), which is the center of circle and the connecting tube (2) with the sliding slot (4) both ends with the connecting shaft (7),
The heart is uniformly arranged multiple；It is adjacent described with retention bead (8) into and out two described in the connecting shaft (7) sliding process
The limiting slot (5) of connecting tube (2) alignment.
4. suction pipe assembly according to claim 3, it is characterised in that: the position limiting structure includes from the connecting shaft (7)
The multiple retention beads (8) radially extended, the retention bead (8) are arranged relative to the connecting shaft (7) uniform intervals；It is described
Corresponding retention bead (8) the arrangement shape setting of limiting slot (5).
5. suction pipe assembly according to claim 4, it is characterised in that: the retention bead (8) is provided with 90 degree of interval
Four, there are four the limiting slot (5) is correspondingly arranged, one of them described limiting slot (5) is overlapped with the sliding slot (4).
6. suction pipe assembly according to claim 3, it is characterised in that: the end of the retention bead (8) is provided with close
The bending part of limiting slot (5) bending.
7. suction pipe assembly according to claim 3, it is characterised in that: it is adjacent to be provided with corresponding two on the connecting shaft (7)
Two retention beads (8) of limiting slot (5) setting on the connecting tube (2).
8. suction pipe assembly according to claim 2, it is characterised in that: the corresponding interconnecting piece (3) of the connecting shaft (7) is outside
Side is provided with press-button structure (6).
9. suction pipe assembly according to claim 2, it is characterised in that: between the position limiting structure and the connecting tube (2)
It is provided with the spring for being sheathed on the connecting shaft (7), the position limiting structure is in first state under the action of the spring.
10. suction pipe assembly according to claim 1 to 9, it is characterised in that: relatively described connecting tube (2) axis
Two sides be symmetrically arranged with the interconnecting piece (3) and the sliding slot (4), be provided with the connecting shaft on the interconnecting piece (3)
(7)。
11. suction pipe assembly according to claim 10, it is characterised in that: be at least arranged in the connecting shaft (7) of side
There is position limiting structure, the connecting shaft (7) of the not set position limiting structure is fixedly installed in the interconnecting piece (3).
12. suction pipe assembly described in any one of -11 according to claim 1, it is characterised in that: including at least three connections
Pipe (2) is formed by connecting, and intermediate described connecting tube (2) one end is provided with the sliding slot (4), and the other end is provided with the interconnecting piece
(3)。
13. suction pipe assembly according to claim 1 to 13, it is characterised in that: the hose (1) is bellows.
14. a kind of dust catcher, it is characterised in that: including the suction pipe group of any of claims 1-13 for dust catcher
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810784912.0A CN109044200B (en) | 2018-07-17 | 2018-07-17 | Suction tube assembly for dust collector and dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810784912.0A CN109044200B (en) | 2018-07-17 | 2018-07-17 | Suction tube assembly for dust collector and dust collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109044200A true CN109044200A (en) | 2018-12-21 |
| CN109044200B CN109044200B (en) | 2024-04-16 |
Family
ID=64816935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810784912.0A Active CN109044200B (en) | 2018-07-17 | 2018-07-17 | Suction tube assembly for dust collector and dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109044200B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5692782A (en) * | 1995-08-05 | 1997-12-02 | Fischer-Rohtechnik Gmbh | Telescopable vacuum cleaner suction pipe |
| US20010037536A1 (en) * | 2000-05-04 | 2001-11-08 | Se-Hyun Kim | Vacuum cleaner |
| CN2879936Y (en) * | 2005-12-31 | 2007-03-21 | 张毓麒 | Extension tube of vacuum cleaner |
| CN101073482A (en) * | 2007-06-28 | 2007-11-21 | 朱建东 | Telescopic pipet for dust collector |
| CN201073281Y (en) * | 2007-06-25 | 2008-06-18 | 沈盘根 | Extension tube of vacuum cleaner |
| CN101374447A (en) * | 2006-01-29 | 2009-02-25 | 伦纳特·奥尔森 | Vacuum cleaner device |
| CN101822510A (en) * | 2009-03-06 | 2010-09-08 | 乐金电子(天津)电器有限公司 | Expansion joint pipe structure of dust collector |
| CN201870570U (en) * | 2010-11-25 | 2011-06-22 | 伸兴工业股份有限公司 | Telescopic tube device of dust collector |
| CN203724042U (en) * | 2013-10-14 | 2014-07-23 | 松下家电研究开发（杭州）有限公司 | Dust collector and bendable extension pipe for same |
| CN206682464U (en) * | 2017-03-02 | 2017-11-28 | 小狗电器互联网科技（北京）股份有限公司 | A kind of suction pipe attachment structure being used in dust catcher |
| CN207041474U (en) * | 2017-03-08 | 2018-02-27 | 小狗电器互联网科技（北京）股份有限公司 | Telescopic pipet |
-
2018
- 2018-07-17 CN CN201810784912.0A patent/CN109044200B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5692782A (en) * | 1995-08-05 | 1997-12-02 | Fischer-Rohtechnik Gmbh | Telescopable vacuum cleaner suction pipe |
| US20010037536A1 (en) * | 2000-05-04 | 2001-11-08 | Se-Hyun Kim | Vacuum cleaner |
| CN2879936Y (en) * | 2005-12-31 | 2007-03-21 | 张毓麒 | Extension tube of vacuum cleaner |
| CN101374447A (en) * | 2006-01-29 | 2009-02-25 | 伦纳特·奥尔森 | Vacuum cleaner device |
| CN201073281Y (en) * | 2007-06-25 | 2008-06-18 | 沈盘根 | Extension tube of vacuum cleaner |
| CN101073482A (en) * | 2007-06-28 | 2007-11-21 | 朱建东 | Telescopic pipet for dust collector |
| CN101822510A (en) * | 2009-03-06 | 2010-09-08 | 乐金电子(天津)电器有限公司 | Expansion joint pipe structure of dust collector |
| CN201870570U (en) * | 2010-11-25 | 2011-06-22 | 伸兴工业股份有限公司 | Telescopic tube device of dust collector |
| CN203724042U (en) * | 2013-10-14 | 2014-07-23 | 松下家电研究开发（杭州）有限公司 | Dust collector and bendable extension pipe for same |
| CN206682464U (en) * | 2017-03-02 | 2017-11-28 | 小狗电器互联网科技（北京）股份有限公司 | A kind of suction pipe attachment structure being used in dust catcher |
| CN207041474U (en) * | 2017-03-08 | 2018-02-27 | 小狗电器互联网科技（北京）股份有限公司 | Telescopic pipet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109044200B (en) | 2024-04-16 |
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