CN106988082A - A kind of self-level(l)ing device of washing machine, washing machine and leveling method - Google Patents
A kind of self-level(l)ing device of washing machine, washing machine and leveling method Download PDFInfo
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- CN106988082A CN106988082A CN201610036397.9A CN201610036397A CN106988082A CN 106988082 A CN106988082 A CN 106988082A CN 201610036397 A CN201610036397 A CN 201610036397A CN 106988082 A CN106988082 A CN 106988082A
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- 238000005406 washing Methods 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000033001 locomotion Effects 0.000 claims abstract description 15
- 230000009471 action Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
The invention provides a kind of self-level(l)ing device of washing machine, washing machine and leveling method, the self-level(l)ing device includes footing, accepts part, interior threaded part and drive device.By setting footing, accepting part, interior threaded part and drive device so that upper-lower position of the adjustment interior threaded part on threaded rod is only needed to when adjusting footing can；The outer ring portion for accepting part is fixed on that the bottom of casing, interior threaded part are located at inner ring portion and inner ring portion and outer ring portion can relative circumferential movements, pass through to set and accept part so that be self-level(l)ing device is simple in construction, reduction regulation needs driving force, easy to adjust.Interior threaded part is driven to rotate by drive device, so that interior threaded part is moved up or down on threaded rod, inner ring portion follows interior threaded part to move and rotated in a circumferential direction relative to outer ring portion together, so as to realize that footing, in the adjustment of above-below direction, adjusts washing machine and be in level relative to casing.
Description
Technical field
The invention belongs to washing machine technology field, and in particular to a kind of self-level(l)ing device of washing machine, washing machine and leveling method.
Background technology
Washing machine is a kind of equipment for removing spot on clothing using the chemical action and inner cylinder of detergent or the mechanical movement of impeller.The level of regulation washing machine is major issue when installing washing machine, if washing machine does not have leveling, the outer barrel of washing machine easily collides with casing in laundry processes, or even the overall strenuous vibration on the ground of washing machine, various noises can be not only sent, and long-time is damaged using washing machine is easily caused.And the uneven caused vibrations of washing machine may loosen foot-screw, this unstability may change the horizontality of washing machine, cause to produce stronger vibrations；Causing the noise of washing machine can become increasing.
Washing machine includes casing and is located at four footing that bottom of shell is used to support washing machine, footing is divided into fixed footing and adjustable bottom feet, it is general to set adjustable bottom feet to be one or two, the level of washing machine is adjusted by adjusting adjustable bottom feet, adjustable bottom feet includes the base contacted with ground and the threaded post being located on base, the screw matched with threaded post is provided with the bottom of casing, spacing between the bottom surface of casing and ground is adjusted by the rotation of threaded post, holding level of washing machine is reached and is grounded stable purpose.Due to the heavier-weight of washing machine, in leveling, there is larger frictional force between the base of footing and ground so that this leveling needs to apply larger moment of torsion and adjustment troublesome poeration；And levelling effect is general, simply basis is artificial judges adjustment balance, that is, is not rocked with hand applying power washer cabinet, but possible washing machine is not on horizontality.In addition, washing machine is typically placed on toilet or balcony, it is contemplated that draining facilitates problem, the ground of toilet or balcony is typically designed as the ground with certain slope, and which in turns increases the difficulty that washing machine adjusts level.
The content of the invention
The present invention provides a kind of self-level(l)ing device of washing machine, simple in construction, easy to adjust, saves manpower.
To reach above-mentioned technical purpose, the present invention is realized using following technical scheme：
A kind of self-level(l)ing device of washing machine, including footing, the footing have the base contacted with ground and the threaded rod being located on the base；Accept part, it is described accept part there is the outer ring portion fixed with the casing of washing machine and on the inside of the outer ring portion and with outer ring portion can relative circumferential movement inner ring portion, interior threaded part, the interior threaded part matches and is sleeved on the threaded rod with the threaded rod, and interior threaded part is located at the inner ring portion；Drive device, the drive device is used to drive the interior threaded part to move on the threaded rod.
Further, the drive device drives the interior threaded part rotation so that interior threaded part is moved up or down on the threaded rod；The inner ring portion follows the interior threaded part to move and rotated in a circumferential direction motion relative to outer ring portion together.
Further, the outer ring portion is static to axial with inner ring portion.
Further, accepting part also has rolled portion, and the neck for accommodating the rolled portion is formed between the outer ring portion and inner ring portion.
Further, the neck is pyramidal structure.
Further, the rolled portion includes guiding the retainer of the rolling element along the circumferentially distributed multiple rolling elements of the neck and for separating.
Further, the rolling element is cone.
Further, the undertaking part is coaxial with the threaded rod.
Further, the drive device includes motor, the driving wheel with motor connection and the driven pulley engaged with the driving wheel, and the driven pulley is fixed with interior threaded part or inner ring portion, and the axis of the driven pulley is overlapped with the axis of interior threaded part.
Further, one layer of rubber layer is coated with the outside of the base.
Based on the self-level(l)ing device of above-mentioned washing machine, the present invention also provides a kind of washing machine, provided with above-mentioned self-level(l)ing device, realizes the automatic leveling of washing machine, it is to avoid the trouble manually adjusted.
A kind of washing machine, including casing, the bottom of the casing are provided with least one above-mentioned self-level(l)ing device.
Further, the washing machine also includes at least one sensor for being used to detect washing machine water level state, and the washing machine controls the self-level(l)ing device action adjustment level of washing machine according to the signal of sensor feedback.
Further, the casing includes offering mounting hole on bottom plate, the bottom plate, and the outer ring portion is fixed at the mounting hole, and the threaded rod passes through the mounting hole.
Further, the drive device is located on the bottom plate in the casing.
Based on above-mentioned washing machine, the present invention also provides a kind of method for automatically leveling of washing machine, realizes the automatic leveling of washing machine.
A kind of method for automatically leveling of washing machine, the washing machine includes main controller, at least one sensor for detecting washing machine water level state, at least one above-mentioned self-level(l)ing device, and the leveling method comprises the steps：
A, startup levelling function；
B, the sensor detect the horizontality of the washing machine, and testing result is fed back into main controller；
C, the main controller judge whether washing machine is in horizontality according to the testing result of feedback, and in this way, then leveling terminates；If not, into step D；
D, the main controller determine whether that the self-level(l)ing device needs the direction adjusted according to the testing result of feedback, and give the signal of the drive device forward or reverse, the drive device action；
E, repeat step B are to D, until leveling terminates.
Further, in step D, the drive device includes stepper motor, the pulse number that the main controller determines to need the height of adjustment and calculate needs according to the testing result of feedback.
Further, the sensor is pressure sensor or inclination sensor.
The self-level(l)ing device for the washing machine that the present invention is provided, by setting footing, accepting part, interior threaded part and drive device so that upper-lower position of the adjustment interior threaded part on threaded rod is only needed to when adjusting footing can；The outer ring portion for accepting part is fixed on that the bottom of casing, interior threaded part are located at inner ring portion and inner ring portion and outer ring portion can relative circumferential movements, pass through to set and accept part so that be self-level(l)ing device is simple in construction, reduction regulation needs driving force, easy to adjust.Interior threaded part is driven to rotate by drive device, so that interior threaded part is moved up or down on threaded rod, inner ring portion follows interior threaded part to move and rotated in a circumferential direction relative to outer ring portion together, so as to realize that footing, in the adjustment of above-below direction, adjusts washing machine and be in level relative to casing.
After the embodiment that the present invention is read in conjunction with the figure, the other features and advantages of the invention will become clearer.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the self-level(l)ing device of washing machine proposed by the invention；
Fig. 2 is Fig. 1 main structure diagram；
Fig. 3 be in Fig. 2 A-A to cross section structure diagram；
Fig. 4 is the partial enlargement structural representation in B regions in Fig. 3；
Fig. 5 is the structural representation with the washing machine in Fig. 1；
Fig. 6 is the self-leveling control flow chart of washing machine.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
In the description of the invention, it should be noted that, the orientation or position relationship of the instruction such as term " interior ", " on ", " under " are based on position relationship shown in the drawings, it is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
Refering to Fig. 1-Fig. 6, it is one embodiment of the self-level(l)ing device of washing machine proposed by the invention, washing machine includes casing 10, casing 10 has bottom plate 101, provided with four footing 1 on bottom plate 101, at least one footing is set to the self-level(l)ing device 20 in the present embodiment, passes through the adjustment of self-level(l)ing device 20, ensure that washing machine is in horizontality, precondition is provided for the smooth working of washing machine.
In the present embodiment, referring to shown in Fig. 1-Fig. 3, self-level(l)ing device 20 includes footing 1, accepts part 2, interior threaded part 3 and drive device 4, wherein, footing 1 has the base 11 contacted with ground and sets threaded rod 12 on the pedestal 11；Accept part 2 there is the outer ring portion 21 fixed with the casing 10 of washing machine and be sleeved on the inner side of outer ring portion 21 and with outer ring portion 21 can relative circumferential movement inner ring portion 22, inner ring portion 22 and outer ring portion 21 are coaxially disposed；Interior threaded part 3 matches and screwed on threaded rod 12 with threaded rod 12, and interior threaded part 3 is fixed with inner ring portion 22；Drive device 4 is used to drive interior threaded part 3 to move on threaded rod 12.
Specifically, the driving interior threaded part 3 of drive device 4 rotates so that interior threaded part 3 is moved up or down while being rotated around threaded rod 12；Inner ring portion 22 and interior threaded part 3 are fixed, and inner ring portion 22 of inner ring portion 22 follows interior threaded part 3 to rotate and move up or down, while inner ring portion 22 rotates in a circumferential direction motion also relative to outer ring portion 21；Outer ring portion 21 has movement up or down under the drive in inner ring portion 22, outer ring portion 21 is fixed on bottom plate 101, namely so that the bottom plate 101 at outer ring portion 21 is moved up or down, also allow for footing 1 and there occurs relative move up or down relative to the bottom plate 101 of casing 10, or perhaps bottom plate 101 there occurs movement up or down relative to base 11, it is achieved thereby that for the purpose of washing machine leveling.
In the present embodiment, the outer ring portion 21 for accepting part 2 is fixed on the bottom plate 101 of casing 10, inner ring portion 22 is fixed with interior threaded part 3, and inner ring portion 22 and outer ring portion 21 can relative circumferential movement, interior threaded part 3 is threadedly coupled with threaded rod 12.So by set accept that part 2 to only need to when adjusting footing 1 to adjust upper-lower position of the interior threaded part 3 on threaded rod 12 can；And accept part 2 by setting so that self-level(l)ing device is simple in construction, easy to adjust, avoid the trouble manually adjusted and greatly reduce the driving force that regulation needs.Interior threaded part 3 is driven to rotate by drive device 4, so that interior threaded part 3 is moved up or down on threaded rod 12, inner ring portion 22 follows interior threaded part 3 to move and rotated in a circumferential direction relative to outer ring portion 21 together, so as to realize that footing 1, in the adjustment of above-below direction, adjusts washing machine and be in horizontality relative to casing 10.
Certainly, outer ring portion 21 is geo-stationary in the axial direction with inner ring portion 22, that is, outer ring portion 21 can only be around axis relative rotary motion with inner ring portion 22.In order to reduce the resistance of relative rotary motion between outer ring portion 21 and inner ring portion 22 frictional force in other words, accepting part 2 also has the rolled portion 23 being located between outer ring portion 21 and inner ring portion 22, the neck 24 of annular is namely formed between outer ring portion 21 and inner ring portion 22, rolled portion 23 is located in neck 24, so that being rolling friction between outer ring portion 21 and inner ring portion 22, so that less moment of torsion can just drive interior threaded part to rotate, the driving force needed is smaller, allow the size of driving part 4 smaller, be conducive to arrangement of the drive device 4 in casing 1.Pass through the structure setting between outer ring portion 21, inner ring portion 22 and rolled portion 23 so that axial power can be born by accepting part 2, and outer ring portion 21 is geo-stationary in the axial direction with inner ring portion 22.It is preferred that, neck 24 is pyramidal structure, is gradually reduced from the top down for the distance apart from axis, so that larger axial force can be born by accepting part 2.
It is shown in Figure 4, rolled portion 23 is included along neck 24 circumferentially distributed multiple rolling elements 231 and retainer 232, retainer 232 is used for rolling element 231 is equally spaced and be distributed on the circumference of neck 24, to prevent from colliding with each other between rolling element 231 during work, and guide the rolling of rolling element 231.In order to further increase the stress performance for accepting the axial direction of part 2, it is cone, reduced diameter from top to bottom to set rolling element 231.
In the present embodiment, drive device 4 includes motor 41, the driving wheel 42 being connected with motor 41 and the driven pulley 43 engaged with driving wheel 42, wherein, driven pulley 43 is fixed with interior threaded part 3, sets the axis of driven pulley 43 to be overlapped with the axis of interior threaded part 3.The moment of torsion that namely motor 41 is exported, is forwarded to driven pulley 43, and drive the rotary motion of interior threaded part 3 by driving wheel 42.
Certainly, in other embodiments, driven pulley 43 can also be set to be fixed with inner ring portion 22, because inner ring portion 22 is fixed with interior threaded part 3, namely driven pulley 43, inner ring portion 22 and the three of interior threaded part 3 are integrally fixed at together, three can be that three parts of a global facility or three separated parts are fixed together.
In the present embodiment, threaded rod 12, interior threaded part 3, inner ring portion 22, outer ring portion 21, driven pulley 43 are all coaxially disposed.
The vibrations in fastness and reduction washing process in order to increase footing 1, one layer of rubber layer 13 is coated with the outside of base 11.
Installation for self-level(l)ing device 20 is fixed, and mounting hole is offered on the bottom plate of casing 10, and outer ring portion 21 is fixed at mounting hole, now, and threaded rod 12 passes through mounting hole, and motor 41 is fixed on the bottom plate 101 in casing 10.
In order to detect whether washing machine is in horizontality, the sensor for being used for detecting washing machine water level state is provided with washing machine, washing machine is according to the signal of sensor feedback, the control action adjustment level of washing machine of self-level(l)ing device 20.So pass through the adjustment of self-level(l)ing device 20 so that washing machine is in horizontality, be conducive to increasing the stabilization in washing process, reduce vibrations, the service life of increase washing machine.
Pressure sensor or inclination sensor can be set for sensor, the level condition for detecting washing machine.The signal of detection is fed back to main control by sensor, and provided with leveling button or leveling option on the control panel of washing machine.
It is the control flow chart of the method for automatically leveling of washing machine in the present embodiment referring to Fig. 6, leveling method comprises the steps：
A, startup levelling function.
B, sensor detect the horizontality of washing machine, and testing result is fed back into main controller.
C, main controller judge whether washing machine is in horizontality according to the testing result of feedback, and in this way, then leveling terminates；If not, into step D.
Specifically, such as with a pressure sensor, then main controller compares the pressure value of feedback with the pressure value set, judge washing machine whether level.The pressure value of setting is usually a quarter of washer weight.
Certainly, in order to further increase the accuracy of detection, pressure sensor can be all set in four footing 1 of washing machine, main controller compares the testing result of receive four feedbacks, it is possible to judge washing machine whether level.When washing machine water usually, the pressure that four footing are subject to should be equal.
It is of course also possible to set inclination sensor, main controller according to the feedback result received can easily judge washing machine whether level.
D, main controller determine whether that self-level(l)ing device 20 needs to heighten or turn down according to testing result, and give the signal of the forward or reverse of drive device 4, and drive device 4 is acted.
Specifically, drive device 4 is acted, it is possible to drive interior threaded part 3 to drive inner ring portion 22 to rotate and moved up on threaded rod 12 together.
In the present embodiment, drive device 4 includes stepper motor, the pulse number that main controller determines to need the height of adjustment and calculate needs according to the testing result of feedback.Stepper motor is given by the umber of pulse calculated, controlled motor rotates a certain angle, and then drive interior threaded part 3 to rotate a certain angle, interior threaded part 3 moves up or down a certain distance on threaded rod 12, realizes the adjustment of footing 2.
E, repeat step B are to D, until leveling terminates so that washing machine is in horizontality.
The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, any those skilled in the art are changed or are modified as the equivalent embodiment of equivalent variations possibly also with the technology contents of the disclosure above.But every without departing from technical solution of the present invention content, any simple modification, equivalent variations and remodeling that the technical spirit according to the present invention is made to above example, still fall within the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of self-level(l)ing device of washing machine, it is characterised in that including：
Footing, the footing has the base contacted with ground and the threaded rod being located on the base；
Accept part, the undertaking part there is the outer ring portion fixed with the casing of washing machine and on the inside of the outer ring portion and with outer ring portion can relative circumferential movement inner ring portion；
Interior threaded part, the interior threaded part matches and is sleeved on the threaded rod with the threaded rod, and interior threaded part is located at the inner ring portion；
Drive device, the drive device is used to drive the interior threaded part to move on the threaded rod.
2. self-level(l)ing device according to claim 1, it is characterised in that the drive device drives the interior threaded part rotation so that interior threaded part is moved up or down on the threaded rod；The inner ring portion follows the interior threaded part to move and rotated in a circumferential direction motion relative to outer ring portion together.
3. self-level(l)ing device according to claim 1, it is characterised in that accepting part also has rolled portion, and the neck for accommodating the rolled portion is formed between the outer ring portion and inner ring portion.
4. self-level(l)ing device according to claim 1, it is characterised in that the undertaking part is coaxial with the threaded rod.
5. the self-level(l)ing device according to any one of Claims 1-4, it is characterized in that, the drive device includes motor, the driving wheel with motor connection and the driven pulley engaged with the driving wheel, the driven pulley is fixed with interior threaded part or inner ring portion, and the axis of the driven pulley is overlapped with the axis of interior threaded part.
6. a kind of washing machine, including casing, it is characterised in that the bottom of the casing is provided with any one of at least one claim 1 to 5 self-level(l)ing device.
7. washing machine according to claim 6, it is characterized in that, the washing machine also includes at least one sensor for being used to detect washing machine water level state, and the washing machine controls the self-level(l)ing device action adjustment level of washing machine according to the signal of sensor feedback.
8. washing machine according to claim 6, it is characterised in that the casing includes offering mounting hole on bottom plate, the bottom plate, and the outer ring portion is fixed at the mounting hole, and the threaded rod passes through the mounting hole.
9. a kind of method for automatically leveling of washing machine, it is characterized in that, the washing machine includes any one of main controller, at least one sensor for detecting washing machine water level state, at least one claim 1 to 5 self-level(l)ing device, and the leveling method comprises the steps：
A, startup levelling function；
B, the sensor detect the horizontality of the washing machine, and testing result is fed back into main controller；
C, the main controller judge whether washing machine is in horizontality according to the testing result of feedback, and in this way, then leveling terminates；If not, into step D；
D, the main controller determine whether that the self-level(l)ing device needs to heighten or turn down according to the testing result of feedback, and give the drive device actuating signal, the drive device action；
E, repeat step B are to D, until leveling terminates.
10. leveling method according to claim 9, it is characterised in that the drive device includes stepper motor, in step D, the pulse number that the main controller determines to need the height of adjustment and calculate needs according to the testing result of feedback.
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|---|---|---|---|
| CN201610036397.9A CN106988082B (en) | 2016-01-20 | 2016-01-20 | Automatic leveling device of washing machine, washing machine and leveling method |
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| CN201610036397.9A CN106988082B (en) | 2016-01-20 | 2016-01-20 | Automatic leveling device of washing machine, washing machine and leveling method |
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| CN106988082B CN106988082B (en) | 2020-12-18 |
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Cited By (11)
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| CN107916533A (en) * | 2017-11-01 | 2018-04-17 | 珠海格力电器股份有限公司 | Control method for washing machine, device, storage medium and washing machine |
| CN109307398A (en) * | 2017-07-28 | 2019-02-05 | 青岛海尔智能技术研发有限公司 | A kind of support device and automatic leveling refrigerator of automatic controlled height |
| CN109386697A (en) * | 2017-08-07 | 2019-02-26 | 青岛海尔洗衣机有限公司 | A kind of self-leveling household electrical appliance and its leveling control method |
| CN109386696A (en) * | 2017-08-07 | 2019-02-26 | 青岛海尔洗衣机有限公司 | A kind of self-leveling household electrical appliance and its leveling control method |
| CN109737877A (en) * | 2019-03-15 | 2019-05-10 | 定襄县格美莱智能科技有限公司 | Part blank detection system and method |
| CN110836303A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔多媒体有限公司 | Footing structure and household appliance with same |
| CN110857745A (en) * | 2018-08-23 | 2020-03-03 | 青岛海尔多媒体有限公司 | Footing structure and household appliance with same |
| DE102019118589A1 (en) * | 2019-07-09 | 2021-01-14 | Minebea Intec Aachen GmbH & Co. KG | Stand monitoring |
| CN112575522A (en) * | 2019-09-30 | 2021-03-30 | 无锡飞翎电子有限公司 | Leveling control method and device, household appliance and readable medium |
| CN112612301A (en) * | 2020-12-07 | 2021-04-06 | 美的智慧家居科技有限公司 | Balance degree adjusting system and balance degree adjusting method of household appliance |
| CN113186691A (en) * | 2021-04-29 | 2021-07-30 | 四川虹美智能科技有限公司 | Control method and device for balance degree of washing machine and washing machine |
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Effective date of registration: 20201202 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Applicant after: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Applicant before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. |
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