CN108626305A - A kind of household electrical appliance footing, washing machine and its control method - Google Patents
A kind of household electrical appliance footing, washing machine and its control method Download PDFInfo
- Publication number
- CN108626305A CN108626305A CN201710178645.8A CN201710178645A CN108626305A CN 108626305 A CN108626305 A CN 108626305A CN 201710178645 A CN201710178645 A CN 201710178645A CN 108626305 A CN108626305 A CN 108626305A
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- China
- Prior art keywords
- electrical appliance
- household electrical
- footing
- washing machine
- hydraulic
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/12—Casings; Tubs
- D06F39/125—Supporting arrangements for the casing, e.g. rollers or legs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M7/00—Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks
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- D06F2222/00—
Abstract
The present invention provides a kind of household electrical appliance footing, washing machine and its control method, household electrical appliance footing includes：Hydraulic plate；Sheath is fixedly connected with the hydraulic plate；Foot is adjusted, be arranged in sheath and it can be moved axially relatively；Accommodating chamber is formed between the hydraulic plate, sheath and adjustment foot；Hydraulic medium is set in the accommodating chamber, and with the change of pressure, the hydraulic medium compression/expansion drives adjustment foot to be moved axially in sheath and carries out leveling；At least two household electrical appliance footing pass through the interconnected circulation for realizing hydraulic medium between household electrical appliance footing of communication apparatus；Control valve is set on the household electrical appliance footing or on communication apparatus, and the control valve is driven by driving device realizes that its is opening/closing, to control circulation/cut-off of the hydraulic medium between household electrical appliance footing.The household electrical appliance footing of the present invention can control control valve to obtain corresponding leveling, rigid support and damping effect by driving device.
Description
Technical field
The present invention relates to the support leveling technology fields of household electrical appliance, and in particular, to a kind of household electrical appliance footing is washed
Clothing machine and its control method.
Background technology
Generally levelling device is all arranged in the bottom of shell in household electrical appliance, when placing household electrical appliance, by adjusting leveling
Device can reach stable placement status, and after being placed after leveling, levelling device, which can support household electrical appliance, makes it keep stablizing.
By taking washing machine as an example, existing washing machine is typically all to be equipped with bolt footing, bolt in shell or complete machine bottom
Footing includes screw rod, nut shim and rubber pad, nut shim can the turn above and below screw rod, screw rod can also be at shell bottom
Turn up and down in the screw hole of plate screws in the length of the threaded hole of bottom plate by the screw rod of bolt footing to realize the height of washing machine
Degree adjustment, the footing of most of washing machine rotate to be height-regulating counterclockwise, clockwise turn to reduction height, are adjusting the bolt
After the height of footing, it will prevent the nut shim loosened from tightening to keep firm.
The footing of above-mentioned washing machine needs user to be adjusted manually although realizing the leveling of washing machine, if laundry
Machine is conducted oneself with dignity, and larger or installation space is narrow, and user's operation is inconvenience.In addition, washing machine is in the long-term course of work
Vibrations are also exchanged flat foot and are acted, its support failure, the injustice for causing washing machine to place are easily led to.
For example, existing general 80Kg of 8KG roller washing machines or so, more heavy, it is extremely inconvenient that consumer is adjusted, even if complete
It cannot guarantee that washing machine is adjusted to optimum state at adjusting, washing machine especially accelerates to 1400r/ in washing by 0r/min
When min or so carries out drying dehydration, washing machine will cause greatly to vibrate, greatly once unhorizontal or empty leg problem exists
Affect the comfort of consumer.
In addition, vibrations caused by washing machine is uneven may be such that foot-screw loosens, footing bracket is made to vertically move, it is this
Unstability may change the horizontality of washing machine, cause to generate stronger vibrations.This vicious circle to do washing
The time of machine is grown, and noise can become increasing, and certain damage is also resulted in washing machine itself, is shortened using the longevity
Life.
Therefore, the leveling of existing washing machine, which exists, needs manual adjustment, time-consuming and laborious and poor precision problem.
In view of this, special propose the present invention.
Invention content
To solve the above-mentioned problems, the first invention purpose of the invention is to provide a kind of household electrical appliance footing, specifically,
It adopts the following technical scheme that：
A kind of household electrical appliance footing, including：
Hydraulic plate；
Sheath is fixedly connected with the hydraulic plate；
Foot is adjusted, be arranged in sheath and it can be moved axially relatively；
Accommodating chamber is formed between the hydraulic plate, sheath and adjustment foot；
Hydraulic medium is set in the accommodating chamber, with the change of pressure, the hydraulic medium compression/expansion band
Dynamic adjustment foot moves axially in sheath carries out leveling；
At least two household electrical appliance, which are interconnected with footing by communication apparatus, realizes hydraulic medium at household electrical appliance bottom
Circulation between foot；
Control valve is set on the household electrical appliance footing or on communication apparatus, and the control valve is filled by driving
It sets drive and realizes that its is opening/closing, to control circulation/cut-off of the hydraulic medium between household electrical appliance footing.
Further, the control valve is electrically operated valve, and the driving device is motor, by controlling motor
Rotation drives electrically operated valve to realize that its is opening/closing.
Further, the communication apparatus includes hydraulic tube and connectedness, and at least two household electrical appliance are distinguished with footing
It is connected to same connectedness by hydraulic tube and realizes connection；Liquid of the setting for hydraulic medium circulation in the connectedness
Runner, the control valve are arranged on connectedness to control the opening/closing of flow channel for liquids.
The second goal of the invention of the present invention is to provide a kind of with the household electrical appliance footing as described in above-mentioned any one
Washing machine, including shell and control panel, at least two interconnected household electrical appliance footing of bottom installation of shell, control
Plate is mounted in shell；The driving device is electrically connected with control panel.
Further, the shell includes bottom plate, and bolt footing, the other side is respectively set on two angles of bottom plate side
Two angles on be respectively set household electrical appliance footing, two household electrical appliance are interconnected with footing；The driving device peace
On bottom plate.
The third goal of the invention of the present invention is to provide a kind of control method of above-mentioned washing machine, and washing machine controls the driving device
The first action is executed, driving device drives control valve to open, and hydraulic medium circulates between household footing carries out automatic leveling；
After washing machine reaches leveling state, washing machine controls the driving device the second action of execution, and driving device drives control valve to close
It closes, hydraulic medium is terminated in holding leveling state in each household electrical appliance footing.
Further, the washing machine, which controls the driving device, executes the time that first acts as t, after time t, does washing
Machine reaches leveling state, and time t meets：1s≤t≤180s；
Preferably, time t meets：3s≤t≤30s；
It is further preferred that the t=5s.
Further, washing machine starts to be dehydrated, and washing machine, which controls the driving device, executes third action, driving device control control
The aperture of valve processed, hydraulic medium circulate between household footing and carry out dehydration damping.
Further, the aperture of the driving device control valve gradually increases with the promotion of rotating speed.
Further, first action is rotates forward, and the described second action is rotates backward, the third
Action is to rotate forward；The rotating speed of first action is more than the rotating speed of third action.
Inventive drive means can open control valve, realize stream of the hydraulic medium between household electrical appliance footing
Logical, until no longer being flowed after steady, same driving device at this time can be again by inverting closing control valve so that family
Electrical appliance footing rigid support.
It can basis if washing machine is when high speed dewatering centrifuges for the household electrical appliance for generating significant shock at work
Different dewatering speeds, driving device control the aperture of opening controlling valve door, realize hydraulic damping damping, and certain rotating speed is higher,
The aperture of opening controlling valve door is bigger.
Therefore, household electrical appliance footing of the invention not only can also be controlled with automatic leveling by driving device
Valve is to obtain corresponding leveling, rigid support and damping effect, and functional stronger, support effect is more preferable.
Description of the drawings
One household electrical appliance of Fig. 1 embodiment of the present invention are assemblied in the dimensional structure diagram on washing machine with footing；
The dimensional structure diagram of two household electrical appliance footing of Fig. 2 embodiment of the present invention；
The front view of two household electrical appliance footing of Fig. 3 embodiment of the present invention；
The vertical view of two household electrical appliance footing of Fig. 4 embodiment of the present invention；
The sectional view in two household electrical appliance footing faces A-A along Fig. 4 of Fig. 5 embodiment of the present invention；
The sectional view in two household electrical appliance footing faces B-B along Fig. 4 of Fig. 6 embodiment of the present invention；
The sectional view in two household electrical appliance footing faces C-C along Fig. 4 of Fig. 7 embodiment of the present invention；
The schematic diagram of the combination one of two household electrical appliance footing of Fig. 8 embodiment of the present invention；
The schematic diagram of the combination two of two household electrical appliance footing of Fig. 9 embodiment of the present invention.
Label declaration in attached drawing：100- household electrical appliance footing 101- hydraulic plate 1011- escape ports 1012- first
Mounting hole 1013- the second mounting hole 1014- hydraulic pressure mouth 1015- anticreep protrusion 1016- third mounting hole 1017- hydraulic plates
Groove 102- hydraulic medium 103- sheath 1031- guide and limit groove 1032- mounting plane 1033- backstops end 104-
Foot 1041- the first guide limiting stopper 1042- the second guide limiting stopper 105- rubber sheet gasket 106- pressure rings 107- is adjusted to protect
Retaining ring 1071- embedded grooves 1072- protection curved surface 108- flexibility containing body 1081- accommodates ontology 200- hydraulic tubes 400-
Connectedness 405- flow channel for liquids 1002- bolt footing 1003- front panel 1004- door and window 1005- control panels 1006- is washed
Agent box 1007- is washed to appear on the stage panel 1008- side panel 1300- driving device 1400- power cord 1500- control valves.
Specific implementation mode
A kind of household electrical appliance footing and household electrical appliance of the present invention are described in detail below in conjunction with the accompanying drawings：
Embodiment one
As shown in figs. 1 to 9, a kind of household electrical appliance footing of the present embodiment, including：
Hydraulic plate 101；
Sheath 103 is fixedly connected with the hydraulic plate 101；
Foot 104 is adjusted, setting is in sheath 103 and it can move axially relatively；
Accommodating chamber is formed between the hydraulic plate 101, sheath 102 and adjustment foot 104；
Hydraulic medium 102 is set in the accommodating chamber, with the change of pressure, the compression of the hydraulic medium 102/
Expansion drives the axial movement in sheath 103 of adjustment foot 104 to carry out leveling；
At least two household electrical appliance, which are interconnected with footing by communication apparatus, realizes hydraulic medium at household electrical appliance bottom
Circulation between foot；
The household electrical appliance are with control valve 1500, the control valve are arranged on footing 100 or on communication apparatus
1500 realize that its is opening/closing by the drive of driving device 1300, between controlling hydraulic medium 102 between household electrical appliance footing 100
Circulation/cut-off.
The driving device 1300 of the present embodiment can open control valve 1500, realize hydraulic medium 102 in household electrical appliance
Circulation between footing 100, until no longer being flowed after steady, same driving device 1300 at this time can be again by anti-
Turn closing control valve 1500 so that 100 rigid support of household electrical appliance footing.
It can basis if washing machine is when high speed dewatering centrifuges for the household electrical appliance for generating significant shock at work
Different dewatering speeds, driving device 1300 control the aperture of opening controlling valve door 1500, realize hydraulic damping damping, certainly
Rotating speed is higher, and the aperture of opening controlling valve door 1500 is bigger.
Therefore, the household electrical appliance footing of the present embodiment not only can also be controlled by driving device and be controlled with automatic leveling
Valve processed is to obtain corresponding leveling, rigid support and damping effect, and functional stronger, support effect is more preferable.
As a kind of preferred embodiment of the present embodiment, the control valve 1500 is electrically operated valve, the drive
Dynamic device 1300 is motor, and the rotation by controlling motor drives electrically operated valve to realize that its is opening/closing.The electricity of the present embodiment motor
Source line 1400 is connected on the control panel of household electrical appliance, is directly operated on control panel convenient for user, control motor rotation.
As a kind of preferred embodiment of the present embodiment, the communication apparatus includes hydraulic tube 200 and connectedness
400, at least two household electrical appliance footing are connected to same connectedness 400 by hydraulic tube 200 respectively and realize connection；It is described
Connectedness 400 in setting for hydraulic medium 102 circulate flow channel for liquids, the control valve 1500 setting is being connected to
To control the opening/closing of flow channel for liquids on part 400.
As shown in Figure 1, the present embodiment provides a kind of washing machine with above-mentioned household electrical appliance footing, including shell simultaneously
Body and control panel, at least two interconnected household electrical appliance footing 100 of bottom installation of shell, control panel are mounted on shell
In vivo；The driving device 1300 is electrically connected with control panel.The washing machine of the present embodiment can control driving dress by control panel
The operation set is to control the opening/closing of control valve 1500.
Specifically, the shell described in the present embodiment includes bottom plate, and bolt footing is respectively set on two angles of bottom plate side
1002, household electrical appliance footing 100 is respectively set on two angles of the other side, two household electrical appliance are interconnected with 100 phase of footing
It is logical；The driving device 1300 is mounted on bottom plate.
The washing machine of the present embodiment can be rotary drum washing machine, roller washing machine, agitator type washing machine.The present invention is with roller
For example, as shown in Figure 1 for washing machine.
The washing machine of the present embodiment has shell, including front panel 1003, rear panel, side panel 1008, panel of appearing on the stage
1007 and bottom plate.Front panel 1003 is provided with door and window 1004, is opened convenient for consumer and picks and places clothing.Enclosure is coaxially disposed
Washing inner/outer tube.Outer barrel is for holding washing, rinse water, and inner cylinder can rotate, for beating clothes washing clothing.Laundry
The top of machine front panel 1003 has detergent box 1006, launches laundry treatment agents for consumer, has control panel 1005,
Suitable wash program is selected convenient for consumer.
The present embodiment additionally provides a kind of control method of the washing machine, and it is dynamic that washing machine controls the driving device execution first
Make, driving device drives control valve to open, and hydraulic medium circulates between household footing carries out automatic leveling；When washing machine reaches
To after leveling state, washing machine controls the driving device the second action of execution, and driving device drives control valve to close, and hydraulic pressure is situated between
Matter is terminated in holding leveling state in each household electrical appliance footing.
Further, the washing machine, which controls the driving device, executes the time that first acts as t, after time t, does washing
Machine reaches leveling state, and time t meets：1s≤t≤180s；
Preferably, time t meets：3s≤t≤30s；
It is further preferred that the t=5s.Control method described in the present embodiment further includes that washing machine starts to be dehydrated,
Washing machine, which controls the driving device, executes third action, and driving device controls the aperture of control valve, and hydraulic medium is in household footing
Between circulation carry out dehydration damping.
Specifically, the aperture of the driving device control valve gradually increases with the promotion of rotating speed.
The control method of the present embodiment：To rotate forward, the described second action is to rotate backward for first action,
The third action is to rotate forward；The rotating speed of first action is more than the rotating speed of third action.
Consumer opens washing machine or consumer starts selected washing procedure, and electrical power is realized and rotated forward, beats
Electrically operated valve is opened, the runner of corresponding liquid medium is opened, can be according to the difference of pressure between realization household electrical appliance footing
Liquid automatic flowing realizes that pressure is uniform.After certain time such as 5S automatic adjustments are stablized, the control panel in washing machine control panel
To motor command, motor reversal realizes the closing to electrically operated valve, realizes household electrical appliance with no longer carrying out hydraulic pressure between footing
Media flow realizes that household electrical appliance become rigid footing with footing and smoothly support washing machine, thus is being washed in washing machine
Low noise with small vibration when rinsing.During washing machine high speed dewatering, the rotating speed of inner barrel of washing is stepped up by 0 rpm
To 1600 rpms, although washing machine so that clothing is uniformly distributed as far as possible before starting gradually upper high speed, inevitably
The bias of 0g to 500g will be will produce, an inner cylinder with certain mass bias is when running at high speed, inevitably to family
Electrical appliance footing generates a cycle and shakes, thus washing machine produces larger centrifugal dehydration vibration and noise, this time control
Making sheet driving motor operates again, and the aperture of electrically operated valve is gradually opened according to the raising of rotating speed, realizes household electrical appliance footing
Uniform by eccentric impact force, some household electrical appliance footing can be passed by compared with large eccentricity impact force by liquid medium flow
It is delivered to by the place compared with small eccentricity impact force, and vibrational energy is consumed by flow of liquid medium dynamic damping, greatly consume and shake
Energy effectively reduces the vibration and noise of washing machine.Washing is completed, and control panel can control motor reversal and be again switched off
Valve mechanism or always on valve mechanism.
The present embodiment automatically opens valve using motor driving, it is of course possible to which what is associated is that solenoid valve etc. is a variety of by logical
Electric drive opens the valve arrangement of runner.
Embodiment two
If Fig. 2-Fig. 9 shows, a kind of household electrical appliance footing of the present embodiment, including：
Hydraulic plate 101；
Sheath 103 is fixedly connected with the hydraulic plate 101；
Foot 104 is adjusted, setting is in sheath 103 and it can move axially relatively；
Accommodating chamber is formed between the hydraulic plate 101, sheath 103 and adjustment foot 104；
Hydraulic medium 102 is set in the accommodating chamber, with the change of pressure, the hydraulic medium compression/expansion
The axial movement in sheath 103 of adjustment foot 104 is driven to carry out leveling.
The household electrical appliance footing of the present embodiment is according to hydraulic principle, due to the different pressures that injustice generates, hydraulic medium
Mobility so that adjust foot carries out the adjustment of adaptability automatically, until household electrical appliance footing reaches balance, hydraulic medium stops
It only leads, realizes automatic leveling.
A kind of household electrical appliance footing of the present embodiment, the hydraulic plate 101 are equipped with for the bottom plate with household electrical appliance
The first mounting structure being fixedly connected；The hydraulic plate is equipped with the second mounting structure for being fixedly connected with sheath.
The present embodiment will adjust being set in sheath 103 of being axially movable of foot 104, then by the second mounting structure by liquid
Pressing plate 101 is fixedly connected with sheath 103, to realize the individually packaged of household electrical appliance footing.By the household electric after being completed
Device, again by the first mounting structure integral installation on the bottom plate of household electrical appliance, realizes that household electrical appliance are installed with footing with footing
On household electrical appliance.
The present embodiment realizes the assembling of household electrical appliance footing by the second mounting structure, and is realized by the first mounting structure
Household electrical appliance are mounted on footing on household electrical appliance, realize corresponding installation by different mounting structures, it is ensured that household electrical appliance
With the overall stability of footing, and the stability on household electrical appliance.
Hydraulic plate 101 is directly fixed on the bottom of household electrical appliance by the household electrical appliance footing of the present embodiment, and by sheath 103
It is fixedly connected with hydraulic plate 101, in this way, hydraulic plate 101 is sandwiched by the bottom of household electrical appliance with sheath 103 so that hydraulic plate
101 with the intensity of sheath 103 being fixedly connected be non-essential, and the connection main purpose of the two makes integrated footing,
The intensity of junction is unrelated with the gravity size of household electrical appliance, the adjustment support force size of foot 104.Therefore, household of the invention
Electric appliance may be implemented hydraulic plate 101 with footing and is fixedly connected with the fast and reliable of sheath 103, and reduce the two bonding strength
It is required that the further requisite space and height reduced needed for connection.
In conclusion the household electrical appliance bottom stud structure of the present embodiment is simpler, installation is also more easy, has more preferable
Stability.
In addition, the structure design of the household electrical appliance footing of the present embodiment can also reduce its whole height, for household
Electric appliance has better damping effect, such as washing machine, the dewatering vibration of household electrical appliance footing of the invention for washing machine
With better damping effect.
As a kind of preferred embodiment of the present embodiment, first mounting structure is be arranged in hydraulic plate
One mounting hole 1013, the hydraulic plate 101 are fixedly connected on household electric by the first connector across the first mounting hole 1013
On the bottom plate of device.
Specifically, the first mounting hole 1013 described in the present embodiment is screw hole, and first connector is screw, described
The mounting hole that setting is passed through for screw on the bottom plate of household electrical appliance, the screw pass through the mounting hole on bottom plate to be mounted on
On screw hole in hydraulic plate 101, realizes and be fixedly mounted.
Specifically, the second mounting structure described in the present embodiment is the second mounting hole 1012, and the hydraulic plate passes through the
Two connectors are fixedly connected across the second mounting hole with sheath.
Further, the upper end outward flanging of sheath 103 described in the present embodiment forms mounting plane 1032, mounting plane
1032 post and fix with the bottom surface of hydraulic plate 101 and connect；Corresponding second mounting hole is opened up on the mounting plane 1032
1012 the 4th mounting hole.
The present embodiment fits the mounting plane 1032 of sheath 103 with hydraulic plate 101, can make more to press in this way
Power, which is transmitted on mounting plane 1032, is disperseed, and avoids hydraulic plate 101 excessive by pressure, is used because 101 inside of hydraulic plate has
In the flow channel for liquids of hydraulic medium circulation, the stabilization of hydraulic plate 101 is the key that entire household electrical appliance footing stablizes leveling.
The mounting plane 1032 of the present embodiment is formed by the upper end outward flanging of sheath 103, increases sheath 103 and hydraulic plate in this way
101 installation contact surface is more advantageous to stability from the hydraulic plate 101 to sheath 103 and the dispersion of mounting plane 1032 power transmission of
Property.
In addition, the mounting plane 1032 of sheath 103 fits with hydraulic plate 101 and is fixedly connected, avoid in sheath 103 or
Mounting structure is designed in person's hydraulic plate 101, reduces the overall structure of household electrical appliance footing.
Further, the gabarit of the gabarit and hydraulic plate 101 of the mounting plane 1032 described in the present embodiment matches, described
Mounting plane 1032 is posted and fixed with the bottom surface of hydraulic plate 101 and is connect.In this way, the pressure that hydraulic plate 101 is subject to can be better
On the corresponding mounting plane 1032 for passing to sheath 103, hydraulic plate 101 is avoided locally not caused and sent out by mounting plane 1032
Raw stress concentration, more conducively hydraulic medium stablize circulation in hydraulic plate.
Preferably, the gabarit of hydraulic plate 101 described in the present embodiment is similar or identical with the gabarit of mounting plane 1032.This
Sample, the two is corresponding, and installation is more simple and convenient.
Specifically, the sheath 103 described in the present embodiment includes the sleeve part of inner hollow, and one end of adjustment foot 104 is arranged
In sleeve part and it can move to axial；The upper end outward flanging of the sleeve part forms mounting plane 1032, mounting plane
1032 post and fix with the bottom surface of hydraulic plate 101 and connect.The mounting plane 1032 of the present embodiment is turned up by the upper end of sleeve part
It is formed, to axial movement of the adjustment foot 104 in sheath 103, and only increases the area at mounting plane, rather than be sheath 103
Whole amplification, save material, reduce cost.
Specifically, the hydraulic plate 101 described in the present embodiment is square plate structure, and the sleeve part is cylindric ties
Structure, the upper end outward flanging of cylinder-like structure form the rectangular mounting plane 1032 to match with hydraulic plate, the square plate
Structure is affixed to merge and be fixedly connected with rectangular mounting plane.
Specifically, at least second mounting structure is respectively set on four angles of hydraulic plate described in the present embodiment；Each
First mounting structure is arranged in at least side of mounting structure；
Preferably, second mounting hole 1012, each second installation are respectively set on four angles of the hydraulic plate 101
The first mounting hole 1013 is respectively set in the both sides in hole 1012.
The present embodiment is according to the structure and characteristic of household electrical appliance footing, 1013 extra second peace of the first mounting hole
Dress hole 1012 is provided to ensure that firm on household electrical appliance.First mounting hole 1013 is distributed in the second mounting hole 1012
Both sides setting, in this way, the entire weight of household electrical appliance can be more evenly distributed in hydraulic plate 101, avoid hydraulic plate
Stress raisers damage.
It can be with as a kind of mounting means of the present embodiment, between the sheath 103 and hydraulic plate 101 described in the present embodiment
By being clamped or being bonded or heat or welding manner is fixedly connected, then at the bottom for being fixedly mounted on household electrical appliance
Portion.
The hydraulic plate 101 of the present embodiment is made of plastics integrated injection molding or die cast metal, and the sheath 103 uses
Plastics integrated injection molding or metal material die casting are made.
According to the loading characteristic of the present embodiment household electrical appliance footing, it is preferable that the hydraulic plate 101 uses plastics one
Body injection molding is made, and the sheath 103 is made of die cast metal.Since 103 stress of sheath is larger, metal pressure is used
Casting in this way, the household electrical appliance of the present embodiment are lower with footing manufacturing cost, and can guarantee its integral strength with proof strength.
The part gravity of household electrical appliance is applied to F1 in hydraulic plate 101 by bottom plate, and the plane of hydraulic plate 101 can be by institute
Stress passes to the mounting plane 1032 of sheath 103, is given by hydraulic pressure transfer inside hydraulic plate 101 and adjusts foot 104, adjusts foot
104 are similarly subjected to support force F2, the F1=F2 of supporting surface, and the power of adjustment foot 104 passes to the plane of hydraulic plate 101, hydraulic plate
101 are transmitted to the bottom plate of household electrical appliance again.Although such design is so that hydraulic plate 101 is born the pressure of internal liquid runner, washed
The part gravity of clothing machine and the support force for adjusting foot 104, but all passed to the mounting plane 1032 of sheath 103, adjustment foot
104 and household electrical appliance bottom plate.
As a kind of preferred embodiment of the present embodiment, the household electrical appliance footing of the present embodiment, which further includes inside, to be had
The flexible containing body 108 of accommodating chamber, the hydraulic medium are accommodated in flexible containing body 108；In the hydraulic plate 101
Equipped with the third mounting structure for sealing installation flexibility containing body 108.
Specifically, the hydraulic plate 101 is internally provided with flow channel for liquids, and the flexibility containing body 108 has opening portion, described
The opening portion of flexible containing body 108 is fixedly mounted on the bottom surface of hydraulic plate 101 by pressure ring 106 and is connected to flow channel for liquids；Institute
The third mounting structure stated is third mounting hole 1016, and the pressure ring 106 is assemblied in third mounting hole by third connector
On 1016.
Further, the third mounting hole 1016 described in the present embodiment is arranged in the middle part of hydraulic plate, third peace
It fills hole 1016 and includes at least four, correspond to four angles setting of hydraulic plate 101 respectively.
As a kind of preferred embodiment of the present embodiment, the opening portion of flexible containing body 108 described in the present embodiment passes through
Pressure ring 106 is fixedly mounted on the bottom surface of hydraulic plate 101, and pressure ring 106 squeezes opening portion deformation with hydraulic plate 101 and carries out jointly
Sealing.The present embodiment squeezes opening portion deformation by pressure ring 106 and is sealed, simpler convenience, and sealing effect is good.
Further, the flexible containing body 108 includes small diameter part, and the end of small diameter part is turned up the opening portion to be formed, institute
The pressure ring 106 stated is set on small diameter part, and pressure ring 106 squeezes opening portion deformation with hydraulic plate 101 and is sealed jointly.This reality
Apply example first can be fastened in pressure ring 106 in the sealing installation for carrying out flexible containing body 108 by small diameter part, it is only necessary to be fixedly mounted
Pressure ring 106, during fastening, pressure ring 106 squeezes opening portion and sealing installation can be realized.
As an embodiment of the present embodiment, hydraulic plate groove, the flexibility is arranged in the bottom surface of the hydraulic plate 101
The opening portion of containing body 108 is filled into hydraulic plate groove by 106 compressional deformation of pressure ring and is sealed.This mode, tight
The opening portion compressional deformation of flexible containing body 108 is filled into hydraulic plate groove and sealing can be realized by solid pressure ring 106, structure
Simply, sealed reliable is effective.
Preferably, the hydraulic plate groove is less than the body of the opening portion of flexible containing body 108 with the volume that pressure ring 106 encloses
Product.In this way, the opening portion of flexible containing body 108 may make to be in close contact with hydraulic plate groove, it is ensured that leakproofness.
The pressure ring 106 of the present embodiment is fixed on by fixing device in hydraulic plate 101, specifically can by bolt/screw into
Row is fixedly connected.The pressure ring 106 opens up pressure ring mounting hole, and the bolt/screw is fastened on hydraulic pressure across pressure ring mounting hole
On the third mounting hole 1016 of plate 101.
The flexible containing body 108 of the present embodiment includes accommodating ontology 1081, and receiving ontology 1081 is soft cystic structures, tool
The telescopic ripple struction having, ripple struction are set in adjustment foot 104, are stretched to drive with the flowing of hydraulic medium and be adjusted
The axial movement in sheath 103 of whole foot 104 carries out leveling.
The household electrical appliance footing of the present embodiment further includes the guard member 107 for protecting flexible containing body 108, the pressure
Ring 106 is embedded in protection ring 107, is had the following technical effect that in this way：
1, installation by adhering is used between the pressure ring 106 and protection ring 107 of the present embodiment, can be played position-limiting action, be kept away
Exempt from the complicated position limiting structure of setting, simple and stable.
2, the household electrical appliance of the present embodiment (have such as installed and used the household electrical appliance to use with footing under great surge
The household electrical appliance or article of footing are when falling or lifting unexpected placement), protection ring 107 is pasted with the flexible pressure of containing body 108
Conjunction face without any gap, avoid flexible containing body 108 therefore swelling fracture the problems such as, improve reliability.
3, installation by adhering is used between the pressure ring 106 and protection ring 107 of the present embodiment, reduces pressure ring 106 and protection
The mounting height of ring 107 is mounted on household electrical appliance to reduce the whole height of household electrical appliance footing to its entirety
Center of gravity influence is smaller, more conducively the stability of strutting system of household electrical appliance, and the vibrations during household electric appliance operation (are such as washed
The dewatering vibration of clothing machine) there is better damping effect.
As a kind of preferred embodiment of the present embodiment, one end setting protection curved surface 1072 of the protection ring 107 is protected
Shield curved surface 1072 coordinates the outer surface of flexible containing body 108 to prevent flexible containing body 108 to be pressurized breakage.
Embedded groove 1071 is arranged in the other end of the protection ring 107 of the present embodiment, and the pressure ring 106 is embedded in protection ring 107
Embedded groove 1071 in.
As a kind of preferred embodiment of the present embodiment, it is arranged on the inner wall of the embedded groove 1071 of the protection ring 107
Stopper protrusion, setting and the matched limit recess portion of stopper protrusion on the fixing piece.The position limiting structure of the present embodiment is according to pressure
The installation by adhering of ring 106 and protection ring 107 is designed, and spaced motion, structure letter are realized while embedded install
It is single, it is reliable and stable.
The depth of the embedded groove 1071 of the present embodiment is more than the thickness of pressure ring 106, and such pressure ring 106 can be completely embedded into embedding
Enter in slot 1071, reduce mounting height to greatest extent, to reduce the whole height of household electrical appliance footing.Meanwhile in household
Electric appliance footing in not level state, by pressure difference, hydraulic medium flowing, flexible containing body 108 stretched by flexible containing body 108
Contracting drives adjustment foot 104 to be axially moved in sheath 103 and carries out leveling, flexible containing body 108 flexible necessarily effect and protection ring
On 107, protection ring 107 moves axially under embedded restriction of the embedded groove 1071 with pressure ring 106.
The fully wrapped around pressure ring 106 of the excircle of the present embodiment structure design protection ring 107, only exists protection ring
107 indentation adjustment feet 104, greatly improve reliability and the stability of fitting.Therefore, the protection ring 107 of the present embodiment is pressed into
It after adjusting foot 104, stabilization can be moved axially in adjusting foot 104 always, mobile smooth reliable, the two realizes entire household electric
Device footing is more stable, and both protection ring 107 and pressure ring 106 can also there are certain activities up and down.
The sheath 103 of the present embodiment household electrical appliance footing and/or the setting of adjustment foot 104 are for limiting adjustment 104 phase of foot
To the guide and limit mechanism that sheath 103 circumferentially rotates, guide and limit mechanism setting escape port is corresponded in the hydraulic plate 101
1011。
It is simple and reliable that the household electrical appliance of the present embodiment with footing carry out automatic leveling using hydraulic principle to household electrical appliance, by
It its axial movement can be arranged in sheath 103 relatively in adjustment foot 104, and upper and lower directions is only limitted to the adjusting of household electrical appliance,
Therefore it in order to ensure the stability of leveling, needs to limit rotation of the adjustment foot 104 relative to sheath 103.Therefore, the present embodiment
Guide and limit mechanism is moved relative to sheath 103 along the direction of needs for limiting adjustment foot 104.
Due to generally will produce vibrations when household electrical appliance (such as washing machine) works, the operation in order to ensure household electrical appliance is steady
Qualitative, the household electrical appliance of the present embodiment should reduce its whole height to reduce the center of gravity of household electrical appliance as possible with footing.Therefore,
The present embodiment corresponds to guide and limit mechanism setting escape port 1011 in hydraulic plate 101, is meeting guide and limit mechanism setting
Meanwhile not influencing to adjust the axial movement of foot 104, the whole height of household electrical appliance footing can be reduced, its damping stabilization is improved
Property.Specifically, the guide and limit mechanism includes the guide and limit groove/guide and limit protrusion being arranged on jacket inner wall
With the guide and limit protrusion/guide and limit groove being correspondingly arranged on adjustment foot outer wall；The guide and limit protrusion can be opposite
The setting of sliding is circumferentially rotated with limitation adjustment foot with respect to sheath in guide and limit groove.The present embodiment passes through guide and limit
The cooperation of groove and guide and limit protrusion can limit the axial movement of adjustment foot 104, simple and reliable for structure.
Escape port 1011 described in the present embodiment corresponds to the guide and limit protrusion on adjustment foot 104/guide and limit groove setting,
It adjusts foot 104 to move towards hydraulic plate 101, the one end for adjusting guide and limit protrusion/guide and limit groove on foot 104 enters
Escape port 1011.The axial movement for the adjustment foot 104 that the present embodiment is directed to only needs no matter which kind of mechanism guide and limit mechanism is
It wants relief portion to correspond to the guide and limit protrusion on adjustment foot 104/guide and limit groove setting, therefore is not changing adjusting
Under the premise of height, reduces the whole height of household electrical appliance footing and ensure the stability of guide and limit.
As a kind of preferred embodiment of the present embodiment, the inner wall of the sheath 103 is arranged along its axial direction to be oriented to
Limiting groove 1031, setting guide and limit protrusion on the outer wall of the adjustment foot 104, the guide and limit protrusion can be opposite
The setting of sliding is circumferentially rotated with limitation adjustment foot 104 with respect to sheath 103 in guide and limit groove 1031.
The setting of escape port 1011 described in the present embodiment corresponds to guide and limit protrusion, the adjustment foot in hydraulic plate 101
Axial movement up and down, one end entry/exit escape port 1011 of guide and limit protrusion in 104 sheaths 103.
Therefore, the household electrical appliance footing of the present embodiment due to guide and limit protrusion one end entry/exit escape port 1011, this
Sample, can be with the adjusting height of bigger under same whole height；When similarly adjusting height, the household of the present embodiment
Electric appliance footing can have smaller whole height.
As a kind of preferred embodiment of the present embodiment, the guide and limit protrusion includes the first guide limiting stopper
1041 and second guide limiting stopper 1042, the first guide limiting stopper 1041 be fixed on the outer wall of adjustment foot 104, second is oriented to
Limited block 1042 is fixed on the first guide limiting stopper 1041 and extends certain altitude towards hydraulic plate 101.The of the present embodiment
One guide limiting stopper 1041 primarily serves the effect of the guide and limit in guide and limit groove 1031, and the second guide limiting stopper
1042 are equivalent to and extend the first guide limiting stopper 1041, have better guide and limit stability.
As a kind of preferred embodiment of the present embodiment, the guide and limit mechanism includes multiple, respectively along shield
It covers 103 and/or adjusts the circumferentially distributed of foot 104, guide and limit mechanism is corresponded in the hydraulic plate 101, multiple escape ports are set
1011.Multiple guide and limit mechanisms are set in this way, further increase the stability of limit, there is better guide and limit
Effect.
The present embodiment prevents circle rotation, sheath 103 from justifying to realize up and down motion of the adjustment foot 104 in sheath 103
A certain number of guide and limit grooves 1031, quantity N, N >=1 are provided on week.4 are preferably in legend of the present invention.
It is also provided with corresponding guide and limit protrusion, quantity N, N >=1 on adjustment 104 circumference of foot.It is excellent in legend of the present invention
Choosing is 4.Guide and limit protrusion can move in guide and limit slot, and stopping by the bottom of guide and limit groove 1031
Gear end 1032 is limited, and prevents adjustment foot 104 by backing out in sheath 103.
To reduce household electrical appliance footing height as far as possible, realizes better stability, height H0 is adjusted not reducing
In the case of, the height that can be reduced sheath 200 in principle as far as possible, adjust foot 300 especially reduces the two coincidence part,
That is H1 in legend.In H1 very littles, sheath 200 can decline the position-limiting action for adjusting foot 300, lead to the lateral deviation for adjusting foot 300
The problems such as.
Embodiment three
The household electrical appliance footing of the present embodiment, including：Hydraulic plate 101 is internally provided with throttling runner；Sheath 103, with liquid
Pressing plate 101 is fixedly connected；Foot 104 is adjusted, setting is in sheath 103 and it can move axially relatively；The hydraulic plate 101,
Accommodating chamber is formed between sheath 103 and adjustment foot 104；Flexible containing body 108, inner containment hydraulic medium are set to described
In accommodating chamber；Under pressure, the flexible containing body 108 is flexible drives adjustment foot 104 axially to be moved in sheath 103
It is dynamic to carry out leveling；Further include rubber sheet gasket 105, be fixed on the bottom of adjustment foot 104,105 bottom of rubber sheet gasket has design
Lines improves the frictional force to ground, enhances stability.
Example IV
The present embodiment provides a kind of household electric with the household electrical appliance footing as described in above-mentioned any embodiment simultaneously
Multiple household electrical appliance footing are installed in the bottom of device, including shell, shell, and household electrical appliance are filled with 100 inside of footing
Hydraulic medium can household electrical appliance between footing circulation carry out leveling.
Preferably, at least two household electrical appliance, which are connected to footing 100 by communication apparatus, realizes hydraulic medium in household electric
Circulation between device footing.
The embodiment of the present invention elaborates that present inventor's electrical appliance footing realizes washing machine automatic leveling by taking washing machine as an example
Principle and method, after washing machine is installed, due to ground injustice, lead to the level height of different household electrical appliance footing
Difference, the household electrical appliance feet locations for being located at ground pit are low.It is possible thereby to be appreciated that, position eminence household electrical appliance
The weight of washing machine is first subject to footing, and the gravity born is big, the low household electrical appliance footing in position due to empty leg or
The gravity born is small.
The adjustment foot of position eminence household electrical appliance footing will move up under big pressure, and the height of entire footing becomes smaller and makes
The hollow chamber of flexible containing body full of hydraulic medium volume compression reduce, force hydraulic medium enter throttle orifice or
Valve opening is by holding, the flexible of position lower household electrical appliance footing in the lower household electrical appliance footing of high-voltage tube in-position
Internal hydraulic medium of receiving is more and more so that flexible containing body expands against adjustment foot elongation.
When position eminence footing is identical with the hydraulic pressure of position lower footing, hydraulic medium is no longer flowed by high-voltage tube, adjustment
The relative position of foot and bottom plate of washing machine no longer changes, and completes the adjust automatically of washing machine.
During washing of drum type washing machine or drying, since hydraulic medium can also slowly flow self-level(l)ing, washing machine
Vibrating noise substantially reduce.
The hydraulic medium of the present embodiment can be chosen using hydraulic oil, good fluidity, stable components.
In addition, the household electrical appliance of the various embodiments described above of the present invention with footing apply also in addition to washing machine such as electric ice
The household electrical appliance such as case, refrigerator, air conditioner indoor unit.
It should be noted that：The various embodiments described above of the present invention can individually be implemented, and also can multiple embodiments be combined reality
It applies.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this patent
Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompt make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, according to the technical essence of the invention
To any simple modification, equivalent change and modification made by above example, in the range of still falling within the present invention program.
Claims (10)
1. a kind of household electrical appliance footing, which is characterized in that including：
Hydraulic plate；
Sheath is fixedly connected with the hydraulic plate；
Foot is adjusted, be arranged in sheath and it can be moved axially relatively；
Accommodating chamber is formed between the hydraulic plate, sheath and adjustment foot；
Hydraulic medium is set in the accommodating chamber, and with the change of pressure, the hydraulic medium compression/expansion, which drives, to be adjusted
Whole foot moves axially in sheath carries out leveling；
At least two household electrical appliance footing are interconnected by communication apparatus realizes hydraulic medium between household electrical appliance footing
Circulation；
Control valve is set on the household electrical appliance footing or on communication apparatus, the control valve is by driving device band
It is dynamic to realize that its is opening/closing, to control circulation/cut-off of the hydraulic medium between household electrical appliance footing.
2. a kind of household electrical appliance footing according to claim 1, which is characterized in that the control valve is motor-driven valve
Door, the driving device are motor, and the rotation by controlling motor drives electrically operated valve to realize that its is opening/closing.
3. a kind of household electrical appliance footing according to claim 1 or 2, which is characterized in that the communication apparatus includes
Hydraulic tube and connectedness, at least two household electrical appliance are connected to same connectedness by hydraulic tube respectively with footing and realize connection；
Flow channel for liquids of the setting for hydraulic medium circulation in the connectedness, the control valve are arranged on connectedness with control
Controlling flow road it is opening/closing.
4. a kind of washing machine with the household electrical appliance footing as described in claim 1-3 any one, which is characterized in that including
Shell and control panel, at least two interconnected household electrical appliance footing of bottom installation of shell, control panel are mounted on shell
It is interior；The driving device is electrically connected with control panel.
5. washing machine according to claim 4, which is characterized in that the shell includes bottom plate, two of bottom plate side
Bolt footing is respectively set on angle, household electrical appliance footing, two household electrical appliance bottoms are respectively set on two angles of the other side
Foot is interconnected；The driving device is mounted on bottom plate.
6. a kind of control method of the washing machine as described in claim 4 or 5, which is characterized in that washing machine, which controls the driving device, to be held
Row first acts, and driving device drives control valve to open, and hydraulic medium circulates between household footing carries out automatic leveling；When washing
After clothing machine reaches leveling state, washing machine controls the driving device the second action of execution, and driving device drives control valve to close, liquid
Pressure medium is terminated in holding leveling state in each household electrical appliance footing.
7. control method according to claim 6, which is characterized in that it is dynamic that the washing machine controls the driving device execution first
The time of work is t, and after time t, washing machine reaches leveling state, and time t meets：1s≤t≤180s；
Preferably, time t meets：3s≤t≤30s；
It is further preferred that the t=5s.
8. control method according to claim 6, which is characterized in that washing machine starts to be dehydrated, washing machine control driving dress
It sets and executes third action, driving device controls the aperture of control valve, and hydraulic medium, which circulates be dehydrated between household footing, to be subtracted
Shake.
9. control method according to claim 8, which is characterized in that the aperture of the driving device control valve with turn
The promotion of speed gradually increases.
10. control method according to claim 8, which is characterized in that first action is described to rotate forward
To rotate backward, third action is to rotate forward for second action；The rotating speed of first action is acted more than third
Rotating speed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710178645.8A CN108626305B (en) | 2017-03-23 | 2017-03-23 | Foot for household appliance, washing machine and control method of washing machine |
| PCT/CN2018/080136 WO2018171705A1 (en) | 2017-03-23 | 2018-03-23 | Foot for household appliance, washing machine and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710178645.8A CN108626305B (en) | 2017-03-23 | 2017-03-23 | Foot for household appliance, washing machine and control method of washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108626305A true CN108626305A (en) | 2018-10-09 |
| CN108626305B CN108626305B (en) | 2021-10-29 |
Family
ID=63584135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710178645.8A Active CN108626305B (en) | 2017-03-23 | 2017-03-23 | Foot for household appliance, washing machine and control method of washing machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108626305B (en) |
| WO (1) | WO2018171705A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296473A (en) * | 2019-06-24 | 2019-10-01 | 珠海格力电器股份有限公司 | Concealable indoor unit and air-conditioning system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112481966B (en) * | 2020-11-02 | 2022-08-26 | 宁波金帅集团有限公司 | Sealing device for roller dryer |
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| CN110296473B (en) * | 2019-06-24 | 2020-12-18 | 珠海格力电器股份有限公司 | Hidden indoor unit and air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108626305B (en) | 2021-10-29 |
| WO2018171705A1 (en) | 2018-09-27 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210929 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER WASHING MACHINE Co.,Ltd. Applicant after: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER WASHING MACHINE Co.,Ltd. Applicant before: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. |
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