CN206036115U - Vibration damper and washing machine with same - Google Patents
Vibration damper and washing machine with same Download PDFInfo
- Publication number
- CN206036115U CN206036115U CN201620961980.6U CN201620961980U CN206036115U CN 206036115 U CN206036115 U CN 206036115U CN 201620961980 U CN201620961980 U CN 201620961980U CN 206036115 U CN206036115 U CN 206036115U
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- blow vent
- assembly
- vibration absorber
- component
- cylinder body
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- 238000005406 washing Methods 0.000 title claims abstract description 42
- 238000013016 damping Methods 0.000 claims abstract description 41
- 230000033001 locomotion Effects 0.000 claims abstract description 16
- 239000006096 absorbing agent Substances 0.000 claims description 37
- 239000000725 suspension Substances 0.000 claims description 21
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The utility model provides a vibration damper and have its washing machine. The damping device comprises an elastic expansion piece, wherein the elastic expansion piece comprises a first moving end and a second moving end which move relatively; the damping structure comprises a first assembly and a second assembly, the first assembly is connected with the first moving end and moves along with the first moving end, the second assembly is connected with the second moving end and moves along with the second moving end, the first assembly and the second assembly are matched to form a piston cavity, the volume of the piston cavity changes along with the relative movement of the first assembly and the second assembly, and a medium in the piston cavity is compressed to generate damping. The damping device can realize damping and share stress on the elastic expansion piece.
Description
Technical field
This utility model is related to cleaning equipment field, in particular to a kind of vibration absorber and the washing machine with which.
Background technology
Used as conventional household electrical appliance, what its vibration noise problem always user and research staff paid close attention to the most asks washing machine
One of topic.The vibration noise that washing machine operation is produced can not only shorten the service life of washing machine itself, while also can serious shadow
The quality of the life to user is rung, and current vibration noise problem is also the technological difficulties in washing machine field.
By taking roller washing machine as an example, the vibration source of the vibration noise of roller washing machine is mainly its suspension, suspension
Be connected using hanging spring between outside framework, when washing machine runs unstable, washing machine easily occur and hit a phenomenon, repeatedly hit cylinder meeting
Cause the damage of equipment；And vibrational energy has been directly delivered on outside framework, evoke washing machine body vibration, and it is big to external radiation
Amount noise.
Utility model content
This utility model aims to provide a kind of vibration absorber that can reduce vibration and the washing machine with which.
This utility model provides a kind of vibration absorber, including：Elastic telescopic part, elastic telescopic part include relative motion
First mobile terminal and the second mobile terminal；Damping structure, damping structure include first assembly and the second component, first assembly and first
Mobile terminal connects, and with the first movement end motion, the second component is connected with the second mobile terminal, and with the second movement end motion, the
One component and the second component cooperatively form plunger shaft, and plunger shaft volume is become with the second component relative motion with first assembly
Change, and the medium of compression piston intracavity produces damping.
Further, the first blow vent and second connected with plunger shaft is provided with first assembly and/or the second component
Blow vent, is provided with the first one-way air inlet structure to control the first blow vent to plunger shaft one-way air inlet on the first blow vent.
Further, on the inwall of first assembly or the second component, first unidirectionally enters the first one-way air inlet structure setting
Depressed structure includes can be around the unidirectional valve plate opened, and valve plate has the detent position of the first blow vent of closing and opens first ventilates
The open position of mouth.
Further, cross-sectional area of the cross-sectional area of the first blow vent more than the second blow vent.
Further, first piston being provided with first assembly, being provided with the first cylinder body on the second component, first piston is stretched
Enter in the cavity of the first cylinder body and form first piston chamber, the first blow vent and the second blow vent are arranged on the second component, and
Connect with first piston chamber.
Further, the second cylinder body being provided with first assembly, being provided with second piston on the second component, second piston is stretched
Enter in the second cylinder body and form second piston chamber.
Further, the 3rd blow vent being provided with the second cylinder body inside and outside the second cylinder body of connection and the 4th blow vent, the
The second one-way air inlet structure is provided with three blow vents, to control the 3rd blow vent to one-way air inlet in the second cylinder body.
Further, elastic telescopic part includes spring.
Further, first mobile terminal and the second mobile terminal of spring is provided with coupling hook.
According to another aspect of the present utility model, there is provided a kind of washing machine, washing machine include outside framework, suspension and company
The vibration absorber of suspension and outside framework is connect, vibration absorber is above-mentioned vibration absorber.
According to vibration absorber of the present utility model and the washing machine with which, increase damping structure on elastic telescopic part,
The resistance formed by media collapse, increases the damping of elastic telescopic part, can effectively weaken the transmission of vibrational energy, and reducing needs
The overall vibration noise of vibration damping object, lifting need reliability and the amenity of vibration damping object.Vibration source can effectively be suppressed simultaneously
Significantly swing, effectively prevent impingement phenomenon.In addition damping structure can share elastic telescopic part stress, improve elastic telescopic part
Service life and reliability.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used for explaining this utility model, does not constitute to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1 is the dimensional structure diagram according to vibration absorber of the present utility model；
Fig. 2 is that the stereochemical structure of the first assembly and the second component section view according to vibration absorber of the present utility model is illustrated
Figure；
Fig. 3 is the cross section structure diagram according to vibration absorber of the present utility model；
Fig. 4 is the enlarged drawing in Fig. 3 at A；
Fig. 5 is the force structure schematic diagram according to vibration absorber of the present utility model.
Description of reference numerals：
10th, elastic telescopic part；11st, the first mobile terminal；12nd, the second mobile terminal；13rd, link up with；20th, damping structure；21st, first
Component；22nd, the second component；211st, first piston；221st, the first cylinder body；222nd, the first blow vent；223rd, the second blow vent；224、
First one-way air inlet structure；50th, vibration absorber.
Specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments describing this utility model in detail.
As shown in Figures 1 to 5, according to embodiment of the present utility model, vibration absorber includes elastic telescopic part 10 and damping
Structure 20, elastic telescopic part 10 include first mobile terminal 11 and the second mobile terminal 12 of relative motion；Damping structure 20, damping knot
Structure 20 includes first assembly 21 and the second component 22, and first assembly 21 is connected with the first mobile terminal 11, and with the first mobile terminal 11
Motion, the second component 22 is connected with the second mobile terminal 12, and is moved with the second mobile terminal 12, first assembly 21 and the second component 22
Plunger shaft is cooperatively formed, and plunger shaft volume is changed with 22 relative motion of the second component with first assembly 21, and compression piston
The medium of intracavity produces damping.
By arranging damping structure 20 on elastic telescopic part 10 so that in 10 telescopic process of elastic telescopic part, the is driven
One component 21 is moved relative to the second component 22, so that the volume of the plunger shaft of first assembly 21 and the composition of the second component 22 becomes
Change, and then compression piston intracavity medium, in compression process, medium produces damping so that vibration source is delivered to the energy on vibration absorber
The a part of damped structure 20 of amount absorbs, and reduces the vibrational energy being delivered in subsequent parts, it is achieved thereby that vibration damping effect
Really.
Below, with medium in the first cylinder body 221 as air, the vibration absorber application is illustrated to washing machine.When
So, in other embodiments, in the first cylinder body 221, medium can be other gases or liquid medium.Vibration absorber can also be answered
With on the object for needing to carry out vibration damping to other.
During by the vibration absorber application to washing machine, spring is hung based on air compression theory to washing machine vibration damping is carried out and set
Meter, increases washing machine and hangs spring damping, weaken vibrational energy and hanging the transmission on spring, can realize washing machine vibration and noise reducing mesh
's；Suspension amplitude can be suppressed simultaneously, suspension operation stability is lifted；Can play in terms of spring stress is hung and necessarily share
Effect, and then spring service life and stability are hung in raising.
As shown in Fig. 2 in the present embodiment, elastic telescopic part 10 includes spring.Spring can be the outer of connection washing machine
Framework hangs spring, or other springs with cylinder.Elastic telescopic part 10 can also be other can elastic deformation and recover structure.
When the relative outside framework of cylinder vibrates, spring is driven by cylinder and stretch, and in the present embodiment, spring is the near one end of cylinder
One mobile terminal 11, is the second mobile terminal 12 near one end of outside framework.Certainly, vice versa.
In order to easily be connected with outside framework and cylinder, first mobile terminal 11 and the second mobile terminal 12 of spring are all provided with
It is equipped with coupling hook 13.Coupling hook 13 can be integrally formed on spring, and also the mode such as can connect by weld bolt is carried out
It is fixedly connected, as long as ensureing that connection is reliable.
As shown in Figures 2 to 4, first assembly 21 includes the cylinder that a cross section is circle, and the top (first of cylinder
It is top that component 21 stretches out one end of the second component 22) it is provided with top board.First assembly 21 stretches into one end of the second component 22 and sets
It is equipped with the flange for extending radially outward.
Second component 22 includes that cross section is circular cylinder, and cylinder bottom (the second component 22 away from the
One end of one component 21 is bottom) base plate is provided with, the top of the second component 22 is provided with radially inwardly extending flange, its
Coordinate with the flange of first assembly 21 and realize backstop, prevent first assembly 21 and the second component 22 from departing from.
First assembly 21 can be passed through thus and the second component 22 forms plunger shaft, when first assembly 21 is to the second component
In 22 during motion, the volume of plunger shaft reduces the compression realized to intracavity medium.
In the present embodiment, so that first piston 211 is moved in the first cylinder body 221, realize to the first cylinder body 221
The compression of interior medium, is provided with first piston 211 in first assembly 21.The piston rod of first piston 211 is fixedly installed on top
On plate.The first cylinder body 221 is provided with second component 22, and the first cylinder body 221 is arranged on base plate, the piston of first piston 211
Stretch in the cavity of the first cylinder body 221 and form first piston chamber.
Spring is set in outside the first cylinder body 221 and first piston 211, and the first mobile terminal 11 is fixed on top board, and
Two mobile terminals 12 are fixed on base plate so that 21 relative second component 22 of first assembly can be driven during telescopic spring to move.Hang
Hook 13 stretches out first assembly 21 and the second component 22.Preferably, it is provided with the second component 22 inside and outside the first cylinder body 221 of connection
First blow vent 222 and the second blow vent 223 in (i.e. first piston chamber).In the present embodiment, the first blow vent 222 and second
Blow vent 223 is arranged on the base plate of the second component 22.
Certainly, if being not provided with the first cylinder body 221 and first piston 211, only enclosed by first assembly 21 and the second component 22
Into plunger shaft, then the first blow vent 222 and the second blow vent 223 can be arranged on first assembly 21 and the second component 22 is any one
On individual, or it is respectively provided with two.
The first one-way air inlet structure 224 is provided with first blow vent 222, makes the first blow vent 222 be only capable of air inlet.So
When first piston 211 is moved to the direction away from base plate, the 223 equal air inlet of the first blow vent 222 and the second blow vent, and first
Piston 211 to move near the direction of base plate when, only the second blow vent 223 being capable of outlet so that in the unit interval, gas output is little
In air inflow, a part of undischarged gas is compressed, and forms damping, vibrational energy is converted to thermal energy consumption, realizes subtracting
Shake.
In the present embodiment, the first one-way air inlet structure 224 is arranged on the first cylinder body 221 towards the one of first piston 211
(if without the first cylinder body 221 and first piston 211, the first one-way air inlet structure 224 is correspondingly arranged at first assembly 21 or for side
On the inwall of two components 22), the first one-way air inlet structure 224 includes the valve plate that unidirectionally can be opened, and valve plate has closing first
The open position of first blow vent 222 of detent position and opening of blow vent 222.
Specifically, valve plate can be arranged on base plate by rotating shaft, and can be rotated around the axis.Valve plate can also be elasticity
It is pressed on base plate under valve block, conventional sense.
When the first 222 air inlet of blow vent, valve plate is opened by jack-up, being capable of air inlet by the first blow vent 222.Work as outlet
When, valve plate is pressed on base plate, and the first blow vent 222 is unable to outlet.
Preferably, cross-sectional area of the cross-sectional area of the first blow vent 222 more than the second blow vent 223.So cause single
Gap in the time of position between air inflow and gas output becomes big, and effectiveness in vibration suppression is more preferable.
Preferably, the second cylinder body can be provided with first assembly 21, can be provided with second piston on the second component 22,
Second piston is stretched in the second cylinder body and forms second piston chamber.The process for extending and shortening in elastic telescopic part 10 is caused so
In can realize damping vibration attenuation.
In such cases, plunger shaft is made up of first piston chamber and second piston chamber.
Preferably, the 3rd blow vent being provided with the second cylinder body inside and outside the second cylinder body of connection and the 4th blow vent, the 3rd
The second one-way air inlet structure is provided with blow vent so that the 3rd blow vent is to one-way air inlet in the second cylinder body.Second cylinder body
Structure can be similar with the structure of the first cylinder body 221.
As shown in figure 5, according to another aspect of the present utility model, there is provided a kind of washing machine, washing machine includes outside framework, hangs
The vibration absorber 50 of extension system and connection suspension and outside framework, vibration absorber 50 are above-mentioned vibration absorber.
Can realize absorbing the vibrational energy that suspension is produced by above-mentioned vibration absorber, reduction is delivered to outside framework
On vibrational energy, so as to reduce vibration and noise problem.
Vibration absorber 50 for multiple, and along the circumference of suspension, vibration absorber interval setting successively.So can be uniform
Ground absorbs vibration.
For existing roller washing machine, hang spring one end and hook in suspension, the other end is hung on washing machine outside framework,
The effect of suspention suspension is primarily served, suspension is vibrated and driven and hangs spring stretching motion when washing machine runs, and makes vibration
To on outside framework, outside framework vibrates and outside radiated noise energy transmission.
The present embodiment using the vibration absorber 50 with damping, is subtracted with reaching washing machine based on air compression theory
The purpose shaken.
By increasing air damping structure 20 on spring, wherein spring is nested in inside damping structure 20.First assembly
21 move with the first mobile terminal 11, and the second component 22 is moved with the second mobile terminal 12,221 shape of first piston 211 and the first cylinder body
Into reciprocating-piston system, the cross-sectional area of the second blow vent 223 is less, and energy normally air inlet and aerofluxuss, the first blow vent 222 are transversal
Area is larger, but is provided with a rubber bottom valve (i.e. the first one-way air inlet structure 224) at the first blow vent 222 so that the first ventilation
Mouthfuls 222 can only air inlet, it is impossible to aerofluxuss.
When washing machine normally runs, suspension vibration causes spring constantly to stretch, and spring is stretched, and band dynamic damping is tied
Structure 20 is stretched, and first piston 211 is moved upwards, and the first one-way air inlet structure 224 is opened, and the first blow vent 222 and second is ventilated
Mouth 223 starts air-breathings.When the springs are compressed, damping structure 20 is also compressed, and first piston 211 is moved downward, and to first
221 inner air of cylinder body does work, and moves out inner air, and promotes the first one-way air inlet structure 224 to close, now air
Can only be discharged by the second blow vent 223, due to the second blow vent 223 it is less, and two blow vents equal air-breathing during air inlet, this causes
During spring elongation, in 221 unit interval of the first cylinder body, air inflow is bigger than unit interval capacity during compression, partly discharges too late
Air can constantly be compressed by first piston 211 inside the first cylinder body 221, from air contraction principle, when air is pressed
During contracting, inside air molecular motion aggravation, and the counteracting force of opposing compression is formed, external work is converted into molecular kinetic energy, point
Sub- high velocity impact converts kinetic energy into thermal energy consumption again and dissipates, i.e., during spring-compressed, 221 inner air of the first cylinder body can be produced
The damping force of compression is hindered, and a part of vibrational energy is dissipated with form of thermal energy.
The vibration energy that suspension is produced is represented with Wtotal, then Wtotal=Wr+Wloss, wherein Wr is spring
The vibrational energy being delivered on washing machine outside framework, Wloss are transmission loss of the vibrational energy on spring, for former washing machine
Spring, Wloss=Wk, Wk are the vibrational energy that spring itself dissipates.And for the present embodiment, Wloss=Wk+WC, Wk
For the vibrational energy that spring itself dissipates, WC is the energy that damping structure 20 dissipates.In the certain feelings of vibration energy Wtotal
Under condition, the energy Wr being delivered on outside framework is reduced, and this inhibits the vibration of washing machine to a certain extent.
As shown in Figure 5, each spring is subject to directed force F total=Fk+FC of suspension, and Fk is spring component simultaneously,
FC is 20 component of damping structure, and damping structure 20 has shared the fractional load that spring is subject to, and spring stress reduces, simple harmonic motion width
Degree reduces, and this can effectively suppress suspension collision outside framework, and can reduce spring fatigue failures risk, improve vibration of washing machine
Characteristic and operation stability.
According to vibration absorber of the present utility model and the washing machine with which has the following technical effect that：
Damping vibration attenuation design is carried out to washing machine based on air compression theory, increase washing machine hangs spring damping, energy
The vibrational energy of suspension is absorbed effectively, increase vibrational energy is hanging the loss of the transmission on spring, and then reduction washing machine entirety
The radiated noise of vibration.
When solving roller washing machine in low speed segment or running unstable, the Oscillation Amplitude of suspension than larger, now very
Easily there is the problem that cylinder is bumped against with side plate, inhibit suspension violent oscillatory motion to a certain extent, can effectively prevent hitting cylinder,
Be conducive to the exploitation of later stage high-capacity washing machine.
The transient impact for hanging that spring is subject to can effectively be alleviated, while can share a part hangs spring pulling force, the permanent work of spring is hung in reduction
Make accumulative fatigue failure risk, the reliability that spring is used is hung in raising.
Preferred embodiment of the present utility model is the foregoing is only, this utility model is not limited to, for this
For the technical staff in field, this utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. are should be included within protection domain of the present utility model.
Claims (10)
1. a kind of vibration absorber, it is characterised in that include：
Elastic telescopic part (10), described elastic telescopic part (10) include first mobile terminal (11) and the second mobile terminal of relative motion
(12)；
Damping structure (20), described damping structure (20) include first assembly (21) and the second component (22), the first assembly
(21) it is connected with the first mobile terminal (11), and moves with described first mobile terminal (11), the second component (22) and institute
The second mobile terminal (12) connection is stated, and is moved with described second mobile terminal (12), it is first assembly (21) and described second group
Part (22) cooperatively forms plunger shaft, and the plunger shaft volume is relative with the second component (22) with the first assembly (21)
Move and change, and compress the medium of the piston intracavity and produce damping.
2. vibration absorber according to claim 1, it is characterised in that
The first blow vent connected with the plunger shaft is provided with first assembly (21) and/or second component (22)
(222) and the second blow vent (223), is provided with the first one-way air inlet structure (224) to control on the first blow vent (222)
First blow vent (222) are to the plunger shaft one-way air inlet.
3. vibration absorber according to claim 2, it is characterised in that the first one-way air inlet structure (224) are arranged on
On the inwall of first assembly (21) or second component (22), described first one-way air inlet structure (224) include can
Around the unidirectional valve plate opened, the valve plate has the detent position for closing the first blow vent (222) and opens described first
The open position of blow vent (222).
4. vibration absorber according to claim 2, it is characterised in that the cross-sectional area of the first blow vent (222) is big
In the cross-sectional area of the second blow vent (223).
5. vibration absorber according to claim 2, it is characterised in that be provided with first piston on first assembly (21)
(211), the first cylinder body (221) is provided with the second component (22), first piston (211) stretch into first cylinder body
(221) cavity is interior and forms first piston chamber, and the first blow vent (222) and second blow vent (223) are arranged on
On second component (22), and connect with the first piston chamber.
6. the vibration absorber according to any one of claim 2 to 5, it is characterised in that set on first assembly (21)
The second cylinder body is equipped with, second piston on the second component (22), is provided with, the second piston is stretched in second cylinder body
And form second piston chamber.
7. vibration absorber according to claim 6, it is characterised in that be provided with connection described second on second cylinder body
The 3rd blow vent and the 4th blow vent inside and outside cylinder body, is provided with the second one-way air inlet structure on the 3rd blow vent, to control
The 3rd blow vent is made to one-way air inlet in second cylinder body.
8. vibration absorber according to any one of claim 1 to 5, it is characterised in that described elastic telescopic part (10) wrap
Include spring.
9. vibration absorber according to claim 8, it is characterised in that first mobile terminal (11) of the spring and described
Two mobile terminals (12) are provided with coupling hook (13).
10. a kind of washing machine, it is characterised in that the washing machine includes outside framework, suspension and connects the suspension
With the vibration absorber (50) of the outside framework, described vibration absorber (50) are the vibration damping dress any one of claim 1 to 9
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620961980.6U CN206036115U (en) | 2016-08-26 | 2016-08-26 | Vibration damper and washing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620961980.6U CN206036115U (en) | 2016-08-26 | 2016-08-26 | Vibration damper and washing machine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206036115U true CN206036115U (en) | 2017-03-22 |
Family
ID=58304660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620961980.6U Active CN206036115U (en) | 2016-08-26 | 2016-08-26 | Vibration damper and washing machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206036115U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224430A (en) * | 2016-08-26 | 2016-12-14 | 珠海格力电器股份有限公司 | Vibration damper and washing machine with same |
| WO2020038203A1 (en) * | 2018-08-20 | 2020-02-27 | 青岛海尔洗衣机有限公司 | Damping device for washing machine and drawing-type washing machine |
| CN110846849A (en) * | 2018-08-20 | 2020-02-28 | 青岛海尔洗衣机有限公司 | Pull type washing machine |
-
2016
- 2016-08-26 CN CN201620961980.6U patent/CN206036115U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224430A (en) * | 2016-08-26 | 2016-12-14 | 珠海格力电器股份有限公司 | Vibration damper and washing machine with same |
| CN106224430B (en) * | 2016-08-26 | 2019-06-04 | 珠海格力电器股份有限公司 | Vibration damper and washing machine with same |
| WO2020038203A1 (en) * | 2018-08-20 | 2020-02-27 | 青岛海尔洗衣机有限公司 | Damping device for washing machine and drawing-type washing machine |
| CN110846849A (en) * | 2018-08-20 | 2020-02-28 | 青岛海尔洗衣机有限公司 | Pull type washing machine |
| CN110846849B (en) * | 2018-08-20 | 2022-01-04 | 天津海尔洗涤电器有限公司 | Pull type washing machine |
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