CN108612964B - Footing for household appliance and household appliance - Google Patents
Footing for household appliance and household appliance Download PDFInfo
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- CN108612964B CN108612964B CN201611144295.5A CN201611144295A CN108612964B CN 108612964 B CN108612964 B CN 108612964B CN 201611144295 A CN201611144295 A CN 201611144295A CN 108612964 B CN108612964 B CN 108612964B
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- household appliance
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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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- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/106—Squeeze-tube devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
The invention provides a bottom foot for a household appliance and the household appliance, wherein the bottom foot for the household appliance comprises: a sheath fixed to the bottom of the household appliance; the adjusting foot is arranged in the sheath and can move axially relative to the sheath; a flexible body assembly having a hydraulic medium contained therein; the flexible body assembly comprises a flexible telescopic part arranged in the adjusting foot, and the flexible telescopic part is telescopic under the action of pressure to drive the adjusting foot to axially move for leveling; and a frictional damping assembly disposed between the sheath and the tuning foot to generate frictional damping to attenuate vibration of the home appliance. The friction damping component arranged in the bottom foot for the household appliance effectively attenuates the vibration amplitude of the adjusting foot in the sheath, but has no influence on the maximum distance H of the adjusting foot moving in the sheath, namely, the maximum range of the bottom foot for the household appliance for automatically leveling the household appliance is not influenced.
Description
Technical Field
The invention relates to the technical field of leveling of household appliances, in particular to a bottom foot for a household appliance and the household appliance.
Background
The household electrical appliance is generally provided with a leveling device at the bottom of a shell, the household electrical appliance can be placed stably by adjusting the leveling device, and the household electrical appliance can be supported and kept stable after being placed after being leveled.
Taking a washing machine as an example, the bolt footing is generally installed at the bottom of a shell or the whole washing machine in the prior art, the bolt footing comprises a screw rod, a nut gasket and a rubber pad, the nut gasket can rotate up and down on the screw rod, the screw rod can also rotate up and down in a screw hole of a bottom plate of the shell, the height of the washing machine can be adjusted by the length of the screw rod of the bolt footing screwed into the screw hole of the bottom plate, the feet of most washing machines rotate anticlockwise for height adjustment, and rotate clockwise for height reduction, and after the height of the bolt footing is adjusted, the nut gasket which is prevented from loosening is screwed down to keep stable.
The bottom foot of the washing machine realizes the leveling of the washing machine, but needs manual adjustment by a user, and if the washing machine has heavy dead weight or the setting space is narrow, the operation of the user is inconvenient. In addition, the vibration of the washing machine in the long-term working process also acts on the flat bottom of the exchange, so that the support of the washing machine is easy to lose efficacy, and the washing machine is not placed flatly.
For example, the existing 8KG drum washing machine is generally about 80KG, heavy, inconvenient for consumers to adjust, and even if the adjustment is completed, the adjustment of the washing machine cannot be guaranteed to be in the best state, and once the washing machine is not horizontal or has leg weakness problems when the washing machine is used for spin-drying and dewatering from 0r/min to 1400r/min, the washing machine will vibrate greatly, and the use comfort of the consumers is greatly influenced.
In addition, vibration caused by the unevenness of the washing machine may loosen the foot screw to move the foot bracket vertically, and such instability may change the horizontal state of the washing machine, resulting in more intense vibration. The vicious circle prolongs the time for the washing machine, the noise becomes bigger and bigger, certain damage is caused to the washing machine, and the service life is shortened.
Therefore, the leveling of the existing washing machine has the problems of time and labor waste and poor precision due to the fact that manual adjustment is needed.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
In order to solve the above problems, a first object of the present invention is to provide a foot for a household appliance, specifically, the following technical solution is adopted:
a foot for a household appliance comprising:
a sheath fixed to the bottom of the household appliance;
the adjusting foot is arranged in the sheath and can move axially relative to the sheath;
a flexible body assembly having a hydraulic medium contained therein;
the flexible body assembly comprises a flexible telescopic part arranged in the adjusting foot, and the flexible telescopic part is telescopic under the action of pressure to drive the adjusting foot to axially move for leveling;
and a frictional damping assembly disposed between the sheath and the tuning foot to generate frictional damping to attenuate vibration of the home appliance.
Furthermore, the friction damping assembly is provided with a friction damping surface, and the friction damping surface is attached to the outer wall of the adjusting foot and/or the inner wall of the sheath.
Further, the friction damping assembly comprises a friction damping sheet:
the friction damping sheet is fixedly arranged on the inner wall of the sheath, and the friction damping surface of the friction damping sheet is attached to the outer wall of the adjusting foot;
and/or the friction damping sheet is fixedly arranged on the outer wall of the adjusting foot, and the friction damping surface of the friction damping sheet is attached to the inner wall of the sheath;
and/or the friction damping sheet is arranged between the sheath and the adjusting foot, and the friction damping surfaces on the two sides of the friction damping sheet are respectively attached to the inner wall of the sheath and the outer wall of the adjusting foot.
Furthermore, the friction damping sheet is arranged around the inner wall of the sheath and/or the outer wall of the adjusting foot;
preferably, a plurality of circles of friction damping fins are arranged on the inner wall of the sheath along the axial direction and/or on the outer wall of the adjusting foot along the axial direction.
Furthermore, the inner wall of the sheath and/or the outer wall of the adjusting foot are/is provided with a mounting groove, and the friction damping sheet is fixedly mounted in the mounting groove.
Further, set up the direction spacing groove on the inner wall of sheath, the outer wall of adjustment foot sets up the direction stopper, the direction stopper spacing in the direction spacing groove and along its endwise slip:
the mounting groove is arranged on the inner wall of the sheath and is communicated or avoided with the guide limiting groove, and/or the mounting groove is arranged on the outer wall of the adjusting foot and is communicated or avoided with the guide limiting block.
Furthermore, the mounting groove comprises a first mounting groove circumferentially arranged along the inner wall of the sheath in a surrounding manner, and the first mounting groove comprises a first concave part positioned in the guide limiting groove and a second concave part positioned on the inner wall of the sheath and communicated with the first concave part;
the friction damping sheet comprises a first damping part matched with the first concave part and a second damping part matched with the second concave part.
Furthermore, the mounting groove comprises a second mounting groove circumferentially arranged along the outer wall of the adjusting foot, and the second mounting groove comprises a third concave part positioned on the guide limiting block and a fourth concave part positioned on the outer wall of the adjusting foot and communicated with the third concave part;
the friction damping sheet comprises a first damping part matched with the third concave part and a second damping part matched with the fourth concave part.
Furthermore, the mounting groove is an arc-shaped groove circumferentially arranged along the inner wall of the sheath in a surrounding manner, the arc-shaped groove is arranged to avoid the guide limiting groove, and the friction damping fin is an arc-shaped friction damping fin matched with the arc-shaped groove;
and/or the mounting groove is an arc-shaped groove circumferentially arranged along the outer wall of the adjusting foot, the arc-shaped groove is arranged avoiding the guide limiting block, and the friction damping sheet is an arc-shaped friction damping sheet matched with the arc-shaped groove;
and/or, the guide limiting block is arranged on the upper/lower part of the outer wall of the adjusting foot, the mounting groove is an annular groove circumferentially arranged along the lower/upper part of the outer wall of the adjusting foot in a surrounding manner, and the friction damping sheet is an annular friction damping sheet matched with the annular groove.
The second invention of the present invention is to provide a household appliance, specifically, the following technical solution is adopted:
the household appliance with the feet for the household appliance comprises a shell, wherein a plurality of feet for the household appliance are arranged at the bottom of the shell, and a hydraulic medium filled in the feet for the household appliance can circulate among the feet for the household appliance to level.
When the household electrical appliance such as a washing machine is used for dewatering, the washing inner drum and the internal clothes rotate at a high speed, a large centrifugal force exists, if the clothes are unevenly distributed, eccentricity is probably caused, and large vibration of the washing machine is caused. After the washing machine transmits the force which changes repeatedly during vibration to the bottom feet for the household appliances, hydraulic media can flow between the bottom feet for the household appliances, viscous resistance exists in the flow of the hydraulic media between the bottom feet, and vibration energy loss is carried out on the reciprocating motion of the adjusting feet in the protective sleeve; on the other hand, the friction damping assembly arranged between the sheath and the adjusting foot generates friction damping to damp the vibration energy of the washing machine.
In order to further reduce the movement of the adjusting feet in the sheath during dehydration, reduce the overall vibration of the washing machine and realize the automatic leveling and low vibration of the washing machine, a plurality of mounting grooves are arranged on the peripheral surface of the inner wall of the sheath and the guide limiting groove, and friction damping sheets are mounted inside the mounting grooves.
Therefore, the friction damping component arranged in the foot for the household appliance effectively attenuates the vibration amplitude of the adjusting foot in the sheath, but has no influence on the maximum distance H of the adjusting foot moving in the sheath, namely the maximum range of the self-leveling of the foot for the household appliance on the household appliance is not influenced.
The household appliance effectively realizes automatic leveling and reduces the overall vibration of the household appliance.
Drawings
FIG. 1 is an exploded view of a foot for a household appliance in accordance with an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a bottom foot for a home appliance according to an embodiment of the present invention;
FIG. 3 is a top view of a foot for a household appliance in accordance with an embodiment of the present invention;
FIG. 4 is a partial cross-sectional view of a foot for a home appliance according to an embodiment of the present invention taken along the plane A-A of FIG. 3;
FIG. 5 is a partial cross-sectional view of a foot for a home appliance according to an embodiment of the present invention taken along the plane B-B of FIG. 3;
FIG. 6 is a partial exploded view of yet another embodiment of a foot for a home appliance according to the present invention;
FIG. 7 is a partial exploded view of yet another embodiment of a foot for a home appliance according to the present invention;
FIG. 8 is a partial exploded view of yet another embodiment of a foot for a home appliance according to the present invention;
FIG. 9 is a schematic view of leveling a foot for a home appliance according to an embodiment of the present invention.
Reference numbers in the drawings illustrate: 100-axial limiting device 101-clamp spring 102-limiting protrusion 103-hole 200-flexible body assembly 210-limiting plate 211-limiting claw 212-limiting plate mounting hole 220-oil pressure plate 221-oil nozzle 222-oil pressure plate mounting hole 230-pressure plate 231-pressure plate mounting hole 232-sealing press step 240-upper protecting ring 241-mounting hole 242-mounting groove 243-chamfer structure 250-oil bag 251-opening 252-throttling thin-diameter 253-corrugated structure 300-adjusting foot 301-hollow cavity 302-guiding limiting block 303-cylinder 304-fourth concave part 305-third concave part 306-annular groove 400-elastic gasket 401-reinforcing joint rib 402-damping rib 500-sheath 501-guide The damping device comprises a limiting groove 502, a limiting groove 503, a sheath fixing hole 504, a sheath plane 505, an annular groove 506, a sleeve body 507, a stopping part 508, a nozzle tip mounting opening 509, a first concave part 510, a second concave part 600, the ground 601, a ground pit 700, a high-pressure oil pipe 800, a foot 900 for a household appliance, a friction damping piece 901, a second damping part 902 and a first damping part.
Detailed Description
The invention relates to a foot for a household appliance and the household appliance, which are described in detail in the following with reference to the accompanying drawings:
example one
As shown in fig. 1 to 5, the present embodiment takes a washing machine as an example, and provides a foot for a household appliance, which includes:
a sheath 500 fixed at the bottom of the washing machine;
an adjustment foot 300 disposed within the sheath 500 and axially movable relative thereto;
a flexible body assembly 200 having a hydraulic medium contained therein;
the flexible body assembly 200 is fixedly connected with the sheath 500 and comprises a flexible telescopic part arranged in the adjusting foot 300, and the flexible telescopic part is stretched under the action of pressure to drive the adjusting foot 300 to axially move for leveling;
and a frictional damping assembly 900 disposed between the jacket 500 and the setting foot 300 to generate frictional damping to damp vibration of the washing machine.
When the washing machine is used for dewatering, the washing inner drum and the clothes inside the washing inner drum run at high speed, so that large centrifugal force exists, and if the clothes are unevenly distributed, eccentricity is probably caused, and large vibration of the washing machine is caused. After the washing machine transmits the force which changes repeatedly during vibration to the feet for the household appliances of the embodiment, hydraulic medium flows among the feet for the household appliances, viscous resistance exists in the flow of the hydraulic medium among the feet, and vibration energy loss is carried out on the reciprocating motion of the adjusting foot 300 in the sheath 500; on the other hand, the frictional damping assembly 900 disposed between the protector 500 and the setting foot 300 generates frictional damping to attenuate shock energy of the washing machine.
Therefore, the frictional damping assembly 900 is disposed between the sheath 500 and the adjustment leg 300 in the foot for the household appliance, so that the frictional damping assembly 900 generates frictional damping to absorb shock of the washing machine when the washing machine vibrates frequently in the dehydration stage, and the reciprocating motion of the adjustment leg 300 in the sheath 500 can be reduced to a certain extent, thereby reducing the frictional loss of the reciprocating motion.
The frictional damping assembly 900 provided in the foot for the home appliance of the present embodiment effectively dampens the vibration amplitude of the setting foot 300 in the sheath 500 during dehydration, but has no influence on the maximum distance H that the setting foot 300 moves in the sheath 500, i.e., the maximum range of the self-leveling of the foot for the home appliance to the washing machine.
The frictional damping assembly 900 of this embodiment has a frictional damping surface, and the frictional damping surface is attached to the outer wall of the adjusting foot 300 and/or the inner wall of the sheath 500. In the embodiment, the frictional damping surface of the frictional damping component 900 is attached to the outer wall of the adjusting foot 300, or attached to the inner wall of the sheath 500, or attached to the outer wall of the adjusting foot 300 and the inner wall of the sheath 500 at the same time to increase the frictional damping between the adjusting foot 300 and the sheath 500, thereby effectively attenuating the vibration amplitude of the adjusting foot 300 in the sheath 500 during dehydration.
As a preferred embodiment of this embodiment, the friction damping assembly 900 includes friction damping plates:
the friction damping sheet is fixedly arranged on the inner wall of the sheath 500, and the friction damping surface of the friction damping sheet is attached to the outer wall of the adjusting foot 300;
and/or the friction damping sheet is fixedly arranged on the outer wall of the adjusting foot 300, and the friction damping surface of the friction damping sheet is attached to the inner wall of the sheath 500;
and/or the friction damping sheet is arranged between the sheath 500 and the adjusting foot 300, and the friction damping surfaces on the two sides of the friction damping sheet are respectively attached to the inner wall of the sheath 500 and the outer wall of the adjusting foot 300.
The friction damping sheet of the embodiment may be fixed on the inner wall of the sheath 500, and the friction damping surface is attached to the inner wall of the sheath 500; or the friction damping surface is fixedly arranged on the outer wall of the adjusting foot 300 and is attached to the inner wall of the sheath 500; it can also comprise a plurality of pieces which are respectively fixed on the inner wall of the sheath 500 and the outer wall of the adjusting foot 300; any arrangement that increases the frictional damping between alignment foot 300 and sheath 500 is possible.
The friction damping fins of the embodiment can also be not fixedly arranged, the friction damping fins are arranged between the sheath 500 and the adjusting foot 300, the friction damping surfaces on the two sides of the friction damping fins are respectively attached to the inner wall of the sheath 500 and the outer wall of the adjusting foot 300, and the friction damping between the adjusting foot 300 and the sheath 500 can also be increased.
Therefore, the present embodiment provides various ways of arranging the friction damping fins, which can be selected according to specific use conditions and use requirements.
The main function of the friction damping sheet of the present embodiment is to absorb the reciprocating motion energy between the adjusting foot 300 and the sheath 500 by friction, and to improve the safety and reliability of the sheath 500 and the adjusting foot 300.
In this embodiment, the friction damping fin is made of a friction damping material, and the material is a polymer ternary composite material and is a physical and chemical complex. It is made up by using three main components of high-molecular adhesive (resin and rubber), reinforcing fibre (organic or inorganic) and friction property regulator and other compounding agent through a series of processes. The friction material has the characteristics of good friction coefficient and wear resistance, and certain heat resistance and mechanical strength. The loss factor is at least 0.01 order of magnitude, the larger the loss factor is, the better the performance of the damping material is, the more energy the damping material loses in the vibration process is, and the better the damping effect is.
The friction damping fins of the present embodiment are disposed around the inner wall of the sheath 500 and/or the outer wall of the adjustment foot 300; thus, the friction damping between the adjusting foot 300 and the sheath 500 in the whole circumferential direction can be increased, the stress is uniform, and the inclination of the adjusting foot 300 caused by overlarge one-way friction damping is avoided.
In order to further reduce the movement of the adjusting feet 300 in the sheath 500 during dehydration, reduce the overall vibration of the washing machine, and achieve the automatic leveling and low vibration of the washing machine, in this embodiment, a plurality of circles of friction damping fins are arranged on the inner wall of the sheath 500 along the axial direction and/or on the outer wall of the adjusting feet 300 along the axial direction.
In order to realize the fixed installation of the friction damping sheet, as a preferred embodiment of this embodiment, a mounting groove is provided on the inner wall of the sheath 500 and/or the outer wall of the adjusting foot 300, and the friction damping sheet is fixedly installed in the mounting groove. In the embodiment, the friction damping sheet is fixedly arranged in the mounting groove, the friction damping surface of the friction damping sheet is flush with the surface of the inner wall of the sheath 500 or the surface of the outer wall of the adjusting foot 300 after mounting, the assembly between the adjusting foot 300 and the sheath 500 is not affected, interference on the axial movement of the adjusting foot 300 is avoided, and the foot leveling function for the household appliance is ensured.
The friction damping sheet of the embodiment can be adhered in the mounting groove and can also be fixed by screws, bands and the like.
As a preferred embodiment of this embodiment, a guide limiting groove 501 is disposed on an inner wall of the sheath 500, a guide limiting block 302 is disposed on an outer wall of the adjusting foot 300, and the guide limiting block 302 is limited in the guide limiting groove 501 and slides along an axial direction thereof.
The installation groove of this embodiment is disposed on the inner wall of the sheath 500, and the through or avoiding guide limiting groove 501 is disposed, and/or the installation groove is disposed on the outer wall of the adjusting foot 300 and is disposed through or avoiding the guide limiting block 302.
Specifically, as shown in fig. 1 to 5, the mounting grooves include a first mounting groove circumferentially disposed along the inner wall of the sheath 500, and the first mounting groove includes a first recess 509 located in the guide limiting groove 501 and a second recess 510 located on the inner wall of the sheath 500 and communicating with the first recess 509;
the frictional damping fin includes a first damping portion 902 engaged with the first recess 509 and a second damping portion 901 engaged with the second recess 510.
In one embodiment shown in fig. 7, the mounting grooves include a second mounting groove circumferentially disposed along the outer wall of the adjusting foot 300, and the second mounting groove includes a third recess 305 located on the guide limiting block 302 and a fourth recess 304 located on the outer wall of the adjusting foot 300 and communicated with the third recess 305;
the frictional damping fin includes a first damping portion 902 engaged with the third recess 305 and a second damping portion 901 engaged with the fourth recess 304.
As shown in fig. 6 and 8, in an embodiment, the mounting groove is an arc-shaped groove circumferentially arranged along the inner wall of the sheath 500, the arc-shaped groove is arranged to avoid the guide limiting groove 501, and the friction damping fin is an arc-shaped friction damping fin 903 matched with the arc-shaped groove;
and/or the mounting groove is an arc-shaped groove circumferentially arranged along the outer wall of the adjusting foot 300 in a surrounding manner, the arc-shaped groove is arranged to avoid the guide limiting block 302, and the friction damping piece is an arc-shaped friction damping piece 903 matched with the arc-shaped groove.
In one embodiment shown in fig. 7, the guide stopper 302 is disposed at the upper/lower portion of the outer wall of the adjustment foot 300, the mounting groove is an annular groove 306 circumferentially disposed along the lower/upper portion of the outer wall of the adjustment foot 300, and the friction damper is an annular friction damper cooperating with the annular groove 306.
The several embodiments described above may be used alternatively or in combination of more or all.
Preferably, in order to further reduce the movement of the adjusting feet 300 in the sheath 500 during dehydration, reduce the overall vibration of the washing machine, and achieve the automatic leveling and low vibration of the washing machine, a plurality of mounting grooves are provided on the circumferential surface of the inner wall of the sheath 500 and/or the circumferential surface of the outer wall of the adjusting feet 300, and friction damping sheets are mounted inside the mounting grooves.
The present embodiment allows for a limited mounting arrangement between the adjustment foot 300 and the sheath 500, which provides for increased frictional damping of the adjustment foot 300 and the sheath 500 throughout the circumferential direction.
The embodiment also provides a washing machine with the feet for the household appliances, which comprises a shell, wherein a plurality of feet 800 for the household appliances are arranged at the bottom of the shell, and the hydraulic medium filled in the feet 800 for the household appliances can circulate among the feet 800 for the household appliances for leveling.
Example two
As shown in fig. 1 to 8, the present embodiment takes a washing machine as an example, and provides a foot for a household appliance, which includes:
a sheath 500;
an adjustment foot 300 disposed within the sheath 500 and axially movable relative thereto;
and a flexible body assembly 200 disposed within the adjustment foot 300 for containing a hydraulic medium;
one end of the flexible body assembly 200 is limited and installed in the sheath 500, and the other end is a telescopic end acting on the adjusting foot 300;
the telescopic end of the flexible body assembly 200 is telescopic under the action of the hydraulic medium to drive the adjusting foot 300 to axially move so as to realize automatic leveling.
This embodiment domestic appliance is with footing setting on four angles of washing machine's bottom plate or evenly set up four at least along bottom plate circumferencial direction, two at least intercommunications in the domestic appliance is with footing: when the ground where the washing machine is located is not flat, the stress of the feet for the household appliances is different, the hydraulic medium in the feet for the household appliances which are communicated with each other is stressed in a large flow direction, and the stress is small, and along with the circulation of the hydraulic medium, the flexible body component 200 stretches and retracts, so that the adjusting feet 300 are further driven to axially move to realize automatic leveling.
Mutual intercommunication between the domestic appliance footing of this embodiment for the inside hydraulic medium of domestic appliance footing can communicate between domestic appliance footing, and when one of them domestic appliance footing atress compressed, hydraulic medium circulates to another domestic appliance footing rather than the intercommunication, and hydraulic medium increases in another domestic appliance footing, and pressure increase makes it stretch out, in order to ensure sufficient holding power.
The bottom foot for the household appliance of the embodiment is used for limiting and installing the flexible body assembly 200 in the sheath 500, so that the flexible body assembly 200 is prevented from being damaged, and the working stability of the flexible body assembly 200 can be ensured.
In addition, the bottom foot for the household appliance with the automatic leveling function of the embodiment has high assembly efficiency, is simple and convenient, and the stressed part (such as the sheath 500) can be made of sheet metal or cast by zinc alloy or injection molded by high-performance engineering plastics such as PPS, PI, PEEK and the like, so that the reliability is high.
The footing for domestic appliance of this embodiment provides an optimized structure, and the equipment is simple, and the installation of being convenient for, and avoids flexible body subassembly 200 to suffer the damage as far as to ensure the overall stability of footing for domestic appliance, increase of service life.
Specifically, the sheath 500 of the embodiment includes a sheath body 506 having a hollow channel therein, the adjusting foot 300 is axially slidably disposed in the hollow channel of the sheath body 506, and one end of the adjusting foot extends out of the hollow channel of the sheath body 506 for contacting with the ground, and can axially slide under the action of the hydraulic medium according to the height of the ground to achieve automatic leveling.
In this embodiment, an opening at one end of the sleeve body 506 extends to an outer flange of the hollow channel to form a sheath plane 504, and the sheath plane 504 is attached to a bottom plate of the washing machine and fixedly connected thereto by a connecting member. The sleeve body 506 of the embodiment is fixedly installed on the bottom plate of the washing machine through the sheath plane 504, and the flexible body assembly 200 is arranged on the sheath 500, so that the sheath 500 and the bottom plate interact, and the flexible body assembly 200 does not bear the acting force of the washing machine, and only stretches under the action of a hydraulic medium, thereby ensuring the working stability of the flexible body assembly.
The sleeve 506 of the present embodiment is a cylindrical structure, and has a certain length to fit the adjustment leg 300, and at least partially covers the adjustment leg 300.
The upper part of the sheath body 506 of the embodiment is provided with a stamping and integrally-formed flanging structure to form a sheath plane 504. The sheath plane 504 has a sheath fixing hole 503, so that the sheath 500 and even the whole domestic appliance can be tightly fixed on the bottom plate of the washing machine by screws or bolts.
Preferably, the sheath 500 of the present embodiment can be manufactured by plastic integral injection molding, aluminum alloy die casting, and the like, and preferably by sheet metal stamping.
The flexible body assembly 200 of the present embodiment includes an oil pressing plate 220, a pressing plate 230, and an oil bladder 250, wherein an opening of the oil bladder 250 is hermetically connected to a lower wall of the oil pressing plate 220 through the pressing plate 230.
In the present embodiment, a nozzle 221 is disposed on one side of the oil pressure plate 220, an oil hole for flowing in the hydraulic medium in the oil bag 250 is disposed on the lower wall of the oil pressure plate 220, and an oil passage for communicating the nozzle 221 and the oil hole is disposed in the oil pressure plate 220.
In this embodiment, the oil pressure plate 220 is limited and installed at one end of the sheath plane 504 of the sheath body 506, and the oil bag 250 is disposed in the sheath 500 and contacts with the inner wall thereof.
The oil pressure plate 220 of the present embodiment is an integrally injection-molded or die-cast member having at least two oil nipples 221 for communication between feet for home appliances, so that a hydraulic medium is transmitted between the feet for home appliances.
The oil hole is formed in the middle of the oil pressure plate 220, the oil passage is formed in the oil pressure plate, so that the hydraulic medium in the oil bag 250 can flow to the oil nozzle 221 through the oil hole and the oil passage, the hydraulic medium of the feet for the plurality of household appliances can freely flow according to the pressure, and the automatic leveling is realized.
The oil bag 250 of the present embodiment contains a hydraulic medium, the oil pressure plate 220 is used for sealing the hydraulic medium of the oil bag 250 and enabling the hydraulic medium in the oil bag 250 to flow out/in from the oil nipple 221 of the oil pressure plate 220, and the pressure plate 230 is used for ensuring the sealing connection between the opening of the oil bag 250 and the oil pressure plate 220 and avoiding the leakage of the hydraulic medium.
The oil bladder 250 of the flexible body assembly 200 of this embodiment is a flexible structure made of a flexible material, preferably a flexible material having elasticity, which enables deformation recovery. The oil pressure plate 220 is an integrally injection-molded or die-cast component, so that the flexible body assembly 200 can be mounted in a limited manner only by mounting the oil pressure plate 220 in the sleeve body 506 in a limited manner.
In order to realize the limited installation of the flexible body assembly 200, the present embodiment mainly needs to limit the circumferential rotation movement and the axial up-and-down movement of the flexible body assembly 200. To define the circumferential rotational movement of the flexible body assembly 200, specifically:
the flexible body assembly 200 of the present embodiment further includes a limiting plate 210, the limiting plate 210 includes a plurality of limiting claws 211 protruding from the limiting plate, and the sleeve body 506 is provided with a limiting groove 502 for limiting in cooperation therewith; the retainer plate 210, the oil pressure plate 220 and the pressure plate 230 are fixedly connected to limit circumferential rotation of the flexible body assembly 200 disposed in the adjustment foot 300.
The flexible body assembly 200 of the present embodiment is configured such that the flexible body assembly 200 cannot rotate circumferentially by the engagement of the engaging pawl 211 of the engaging plate 210 and the engaging groove 502 of the housing 506.
The plurality of limiting claws 211 of the limiting plate 210 of the embodiment are arranged according to the specific structure and installation of the oil pressure plate 220.
Specifically, the sleeve body 506 is provided with an opening for the oil nipple 221 of the oil pressure plate 220 to extend out, so that the position of the opening needs to be considered when the limiting claw 211 is arranged, and the opening is avoided, so that the limiting installation is ensured.
The limiting plate 210 of the embodiment has a limiting plate mounting hole 212, the oil pressure plate 220 has an oil pressure plate mounting hole 222, the pressing plate 230 has a pressing plate mounting hole 231, and the pressing plate 230, the oil pressure plate 220, and the limiting plate 210 can be tightly fixed together by screws or bolts.
The sheath 500 of this embodiment is installed on the bottom plate of washing machine, and the oil pressure board 220 fastens at the limiting plate 210, and the limiting plate 210 is all spacing from top to bottom, and the lower part is the least significant end of the limiting groove 502 of sheath 500, and limiting claw 211 and limiting groove 502 make limiting plate 210 all have the atress strong point in the circumferencial direction at least, and limiting claw 211 and limiting groove 502 evenly distributed as far as possible along the circumferencial direction promptly.
Preferably, the limiting plate 210 is made of sheet metal through stamping, and is simple and low in cost.
In order to define the circumferential rotation movement of the flexible body assembly 200, the foot for the household appliance of the present embodiment specifically:
the bottom foot for the household appliance further comprises an axial limiting device 100, the axial limiting device 100 is arranged in the sheath 500, one side of the axial limiting device 100 is limited on a bottom plate of the washing machine, and the other side of the axial limiting device acts on the flexible body assembly 200 to limit axial movement of the flexible body assembly.
The axial movement of the flexible body assembly 200 is limited by the axial limiting device, and the stable work of the flexible body assembly 200 is further ensured.
As a preferred embodiment of this embodiment, the axial limiting device is an annular clip 101 having a notch, an annular groove 505 is disposed on the inner wall of the sheath 500, and the clip 101 is clamped in the annular groove 505 and located on the limiting plate 210 of the flexible body assembly 200. The clamping spring 101 is simple and convenient to mount and dismount and low in cost. The inner wall of the sheath 500 is provided with the annular groove 505, so that the clamp spring 101 can be effectively limited, and the installation stability of the clamp spring 101 is ensured.
This embodiment has an annular groove 505 on the inner circumference of the sheath 500, which may be stamped, and preferably one annular groove 505 is machined. After the limiting plate 210 is installed on the sheath 500, the upper clamp spring 101 is installed. After the clamp spring 101 is installed, the limiting plate 210 does not move up and down any more.
Further, the upper surface of the snap spring 101 of this embodiment is provided with a protruding limiting protrusion 102, and the protrusion 102 can further play a role in axial limiting when the snap spring 100 axially moves. The clamp spring 101 is provided with a limiting protrusion 102, so that the force is uniform.
Further, the circlip 100 of this embodiment is provided with a hole 103 for tool operation. The circlip 101 has a hole 103 to facilitate tool installation.
The oil bag 250 of the present embodiment includes a collapsible bellows 253, a narrowed diameter 252, and an opening 251, the narrowed diameter 252 communicating with the bellows 253, and the opening 251 being located at an end of the narrowed diameter 252.
The flexible body assembly 200 further includes an upper guard ring 240, wherein the upper guard ring 240 has a mounting hole 241 for allowing the small diameter 252 to pass therethrough at the center thereof, the upper guard ring 240 has a mounting groove 242, one end of the mounting groove 242 opens through the mounting hole 241, and the other end opens on the side wall of the upper guard ring 240.
The small throttle diameter 252 enters the mounting hole 241 through the mounting groove 242.
The lower surface of the upper protection ring 240 has a fitting surface that is matched with the oil bladder 250, and prevents the oil bladder 250 from being crushed and damaged upward under high pressure.
The upper protection ring 240 has a mounting hole 241 in the middle and has a mounting groove 242 structure, and the mounting groove 242 has a chamfer structure 243 on the outside, so that the throttling small diameter 252 of the oil bladder 250 can be mounted in the mounting hole 241 of the upper protection ring more easily.
The mounting hole 241 can ensure the strength of the throttling small diameter 252, avoid damage, prevent deformation, and ensure that the throttling small diameter 252 of the oil bag 250 is always opened, thereby ensuring the working effectiveness of the bottom foot for the household appliance.
The contact part of the upper protection ring and the oil sac is consistent with the shape of the oil sac.
The upper protection ring and the cavity structure of the adjusting foot form a sealed space, and the oil bag arranged inside is protected by the two parts, so that the oil bag is effectively prevented from being expanded, broken or damaged.
The oil bag 250 has an opening 251, a narrowed diameter 252, and a bellows structure 253, and contains a liquid medium therein, preferably hydraulic oil.
The oil bag 250 is made of oil-resistant elastomer material, such as nitrile rubber, acrylate rubber, silica gel, etc.
Since the oil bladder 250 is in a working state of being compressed and extended up and down, in order to improve reliability and life span thereof, the main body of the oil bladder 250 is provided with a bellows structure 253.
The oil bag 250 is attached to the adjusting foot 300 and the upper protection ring 240, and a certain gap is formed only at the position of the corrugated structure 253.
The foot for the household appliance of the present embodiment performs the limit installation of the flexible body assembly 200, mainly to avoid instability caused by the rotation of the foot for the household appliance in the automatic leveling process. Therefore, further, the foot for the household appliance of the present embodiment also defines the movement of the adjusting foot, so that it only moves up and down without rotating, to ensure the stability of the leveling process, specifically:
the inner wall of the sheath 500 of this embodiment is provided with a guide limiting groove 501, the outer wall of the adjusting foot 300 is provided with a guide limiting block 302, and the guide limiting block 302 is limited in the guide limiting groove 501 and slides along the axial direction thereof.
The sheath 500 is provided with a guide limiting groove 501, so that the adjusting foot 300 can only move up and down in the sheath 500 and cannot rotate circularly, and the adjusting foot 300 is prevented from rotating in the sheath 500. The bottom of the limiting guide groove 501 is provided with a stopping part 507, which is matched with the limiting block 302 protruding from the circumference of the adjusting foot 300 to prevent the adjusting foot 300 from falling off from the sheath 500.
The diapire outside of sheath 500 of this embodiment sets up resilient pad 400, set up on the diapire of sheath 500 and strengthen the laminating groove, resilient pad 400's upper surface sets up and strengthens laminating muscle 401 with strengthening laminating groove matched with, and resilient pad 400's lower surface sets up the sunken damping muscle 402 that forms of part.
Preferably, the elastic pad 400 is a rubber pad. Adjusting foot 300 and rubber gasket are for increasing joint strength, and adjusting foot 300 bottom is provided with strengthens laminating groove, has to strengthen laminating muscle 401 on the rubber gasket, and the integrative injection moulding of preferred rubber is in on adjusting foot 300. The contact place of the rubber gasket and the ground is preferably provided with a plurality of sunken patterns to form damping ribs 401, so that the friction damping between feet and the bottom surface is increased, and the washing machine is prevented from shifting due to vibration.
The embodiment also relates to an assembly method of the foot for the household appliance, which comprises the following steps:
based on the sheath 500
1) The adjusting foot 300 with the rubber gasket is put in from the upper end opening of the sheath 500.
Note that the guide stopper 302 of the adjustment leg 300 must be engaged with the guide stopper groove 501 of the sheath 500.
2) The upper protection ring 240 is installed at the throttling small diameter 252 of the oil bag 250, the opening of the oil bag 250 is inserted into the boss of the oil pressure plate 220 and placed in the sealing groove, the pressure plate 230 presses the opening of the oil bag 250, and the limit plate installation hole 212, the oil pressure plate installation hole 222 and the pressure plate installation hole 231 are penetrated through screws or bolts, so that the oil bag 250, the upper protection ring 240, the pressure plate 230, the oil pressure plate 220 and the limit plate 210 form the flexible body assembly 200. The flexible body assembly 200 is placed into the hollow chamber 301 of the adjustment foot 300.
3) The position limiting plate 210 of the flexible body assembly 200 is installed in the sheath 500, the lower portion of the position limiting plate 210 is limited by the position limiting groove 502, and the circumference is limited by the position limiting claw 211 and the position limiting groove 502.
4) The circlip 101 is placed in the annular groove 505 of the sheath 500, and the flexible body assembly 200 is fixed together without moving up and down and along the circumferential direction relative to the sheath 500.
The equipment is accomplished, and the packaging efficiency is high, and is simple and convenient, and the atress part all is the panel beating preparation, has high reliability.
The embodiment also provides a washing machine with the domestic appliance footing, which comprises a shell, wherein a plurality of domestic appliance footings are arranged at the bottom of the shell, and the hydraulic medium filled in the domestic appliance footings can circulate among the domestic appliance footings to realize leveling.
The factory setting of the washing machine in the embodiment is that the heights of the four feet for the household appliances are preferably consistent, the washing machine is randomly placed on an uneven bottom surface, the four feet for the household appliances bear different pressures according to the uneven condition of the bottom surface, and then the lengths of the pressing-in sheaths of the adjusting feet are different, so that the automatic leveling of the washing machine is realized.
What needs to be further illustrated by the above examples is:
1. the number of the feet in the embodiment of the invention is two or more, the number N is more than or equal to 2, preferably two, the cost is the lowest, and a better effect can be realized.
In the embodiment of the present invention, four ports of the communication device 15 are respectively connected to four feet, and it can be inferred that one communication device 15 having three, five, six, N ports is used, and the ports are respectively connected to three, five, six, N feet. The above embodiment is only the most suitable 4 for realizing the functions, so as to realize the control of the cost to the minimum.
2. The embodiment of the invention takes a drum washing machine as an example, explains the principle and the method for realizing the automatic leveling of the drum washing machine, and can easily conceive that the invention can be applied to a pulsator washing machine.
3. The embodiment of the invention takes a washing machine as an example, explains the principle and the method for realizing the automatic leveling of the washing machine, and can be easily imagined that the invention can be applied to household appliances such as refrigerators, freezers, dish washers and the like.
EXAMPLE III
As shown in fig. 9, specifically explaining the leveling principle, when the washing machine is installed, the horizontal heights of the feet 800 for different household appliances are different due to the uneven ground 600, and the feet 800 for the household appliances located in the ground pit 601 are low. It can be known that the foot 800 for the home appliance at the high position first bears the weight of the washing machine and bears a large gravity, and the foot 800 for the home appliance at the low position bears a small gravity due to a virtual leg.
The adjusting foot 300 of the foot 800 for the household appliance at the high position moves upwards under large pressure, the height of the whole foot is reduced to reduce the volume compression of the hollow cavity of the oil bag 250 filled with hydraulic oil, the hydraulic oil is forced to enter the throttling hole or the valve hole to enter the foot at the low position through the high-pressure oil pipe 700, the hydraulic oil of the oil bag 250 at the foot at the low position is increased, and the oil bag 250 expands to push the adjusting foot 300 to extend.
When the hydraulic pressure of the foot at the high position is the same as that of the foot at the low position, the hydraulic oil does not flow through the high-pressure oil pipe 700 any more, the relative position of the adjusting foot and the bottom plate of the washing machine does not change any more, and the automatic adjustment of the foot for the household appliance is completed.
In the washing or spin-drying process of the washing machine, the vibration noise of the washing machine is greatly reduced because the hydraulic oil can flow slowly and self-level.
The high pressure oil pipe 700 according to the embodiment of the present invention is connected to the nozzle 221 of the foot 800 for the home appliance.
The above-described embodiments of the present invention may be implemented individually or in combination of a plurality of embodiments.
In addition, the feet for the household appliances of the embodiments of the invention can also be applied to household appliances such as refrigerators, freezers, indoor air conditioners and the like except washing machines.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. A foot for a household appliance, comprising:
a sheath fixed to the bottom of the household appliance;
the adjusting foot is arranged in the sheath and can move axially relative to the sheath;
a flexible body assembly having a hydraulic medium contained therein;
the flexible body assembly comprises a flexible telescopic part arranged in the adjusting foot, and the flexible telescopic part is telescopic under the action of pressure to drive the adjusting foot to axially move for leveling;
and a frictional damping assembly disposed between the sheath and the adjustment leg to generate frictional damping to attenuate vibration of the household appliance;
the flexible body assembly comprises an oil pressing plate, a pressing plate and an oil bag, wherein an opening of the oil bag is connected to the lower wall of the oil pressing plate in a sealing mode through the pressing plate;
the flexible body assembly further comprises a limiting plate, the limiting plate comprises a plurality of limiting claws which are arranged in a protruding mode, and the sheath is provided with a limiting groove matched with the sheath for limiting; the limiting plate, the oil pressure plate and the pressing plate are fixedly connected to limit the circumferential rotation of the flexible body assembly arranged in the adjusting foot;
the bottom foot for the household appliance further comprises an axial limiting device, the axial limiting device is arranged in the sheath, one side of the axial limiting device is limited on a bottom plate of the washing machine, and the other side of the axial limiting device acts on the flexible body assembly to limit the axial movement of the flexible body assembly;
the axial limiting device is an annular clamp spring with an opening, the inner wall of the sheath is provided with an annular groove, and the clamp spring is clamped in the annular groove and positioned on the limiting plate of the flexible body assembly.
2. A foot for a domestic appliance according to claim 1 wherein said frictional damping means comprises a frictional damping surface which is disposed in abutment with the outer wall of the adjustment foot and/or the inner wall of the sheath.
3. A foot for a domestic appliance according to claim 1 or 2, wherein said frictional damping arrangement comprises a frictional damping fin:
the friction damping sheet is fixedly arranged on the inner wall of the sheath and rubs
The friction damping surface of the friction damping sheet is attached to the outer wall of the adjusting foot;
and/or the friction damping sheet is fixedly arranged on the outer wall of the adjusting foot, and the friction damping surface of the friction damping sheet is attached to the inner wall of the sheath;
and/or the friction damping sheet is arranged between the sheath and the adjusting foot, and the friction damping surfaces on the two sides of the friction damping sheet are respectively attached to the inner wall of the sheath and the outer wall of the adjusting foot.
4. A foot for a domestic appliance according to claim 3, wherein said friction damping fin is circumferentially disposed along the inner wall of the sheath and/or the outer wall of the adjustment foot.
5. A foot for a domestic appliance according to claim 4, wherein the inner wall of the sheath and/or the outer wall of the adjustment foot are provided with a plurality of turns of friction damping fins in axial direction.
6. A foot for a domestic appliance according to claim 3 wherein the inner wall of said sheath and/or the outer wall of said adjustment foot is provided with a mounting recess, said friction damping plate being fixedly mounted in said mounting recess.
7. A foot for a household appliance as claimed in claim 6, wherein the inner wall of the sheath is provided with a guide limiting groove, the outer wall of the adjusting foot is provided with a guide limiting block, and the guide limiting block is limited in the guide limiting groove and slides along the axial direction thereof:
the mounting groove is arranged on the inner wall of the sheath and is communicated or avoided with the guide limiting groove, and/or the mounting groove is arranged on the outer wall of the adjusting foot and is communicated or avoided with the guide limiting block.
8. A foot as claimed in claim 7, wherein the mounting recess comprises a first mounting recess circumferentially disposed along the inner wall of the casing, the first mounting recess comprising a first recess in the guide-limiting recess and a second recess in the inner wall of the casing in communication with the first recess;
the friction damping sheet comprises a first damping part matched with the first concave part and a second damping part matched with the second concave part.
9. A foot as claimed in claim 7, wherein the mounting recess comprises a second mounting recess circumferentially disposed along the outer wall of the adjustment foot, the second mounting recess comprising a third recess in the guide stopper and a fourth recess in the outer wall of the adjustment foot in communication with the third recess;
the friction damping sheet comprises a first damping part matched with the third concave part and a second damping part matched with the fourth concave part.
10. A foot for a household appliance as claimed in claim 7, wherein the mounting groove is an arc-shaped groove circumferentially arranged along the inner wall of the sheath, the arc-shaped groove is arranged avoiding the guide limiting groove, and the friction damping fin is an arc-shaped friction damping fin matched with the arc-shaped groove;
and/or the mounting groove is an arc-shaped groove circumferentially arranged along the outer wall of the adjusting foot, the arc-shaped groove is arranged avoiding the guide limiting block, and the friction damping sheet is an arc-shaped friction damping sheet matched with the arc-shaped groove;
and/or, the guide limiting block is arranged on the upper/lower part of the outer wall of the adjusting foot, the mounting groove is an annular groove circumferentially arranged along the lower/upper part of the outer wall of the adjusting foot in a surrounding manner, and the friction damping sheet is an annular friction damping sheet matched with the annular groove.
11. A household appliance having a foot for a household appliance according to any one of claims 1 to 10, comprising a housing, a plurality of said feet for a household appliance being mounted on the bottom of the housing, the feet for a household appliance being filled with a hydraulic medium which can be circulated between the feet for a household appliance for leveling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611144295.5A CN108612964B (en) | 2016-12-13 | 2016-12-13 | Footing for household appliance and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611144295.5A CN108612964B (en) | 2016-12-13 | 2016-12-13 | Footing for household appliance and household appliance |
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| Publication Number | Publication Date |
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| CN108612964A CN108612964A (en) | 2018-10-02 |
| CN108612964B true CN108612964B (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611144295.5A Active CN108612964B (en) | 2016-12-13 | 2016-12-13 | Footing for household appliance and household appliance |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113007500B (en) * | 2021-02-10 | 2022-04-05 | 中国商用飞机有限责任公司 | Foot margin fixing device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2052843U (en) * | 1989-08-04 | 1990-02-14 | 方文华 | Plate contact mechanic shock damper |
| DE4138961A1 (en) * | 1991-11-27 | 1993-06-03 | Ymos Ag Ind Produkte | MACHINE FOOT |
| AU741052B2 (en) * | 1997-04-23 | 2001-11-22 | Fisher & Paykel Appliances Limited | Height adjustment or levelling apparatus |
| BRPI0601993A (en) * | 2006-05-11 | 2008-01-08 | Whirlpool Sa | self-leveling foot for an appliance |
| CN105755757B (en) * | 2016-04-13 | 2024-01-12 | 青岛海尔洗衣机有限公司 | Washing machine footing and washing machine with automatic leveling function |
| CN105755750B (en) * | 2016-04-13 | 2024-04-02 | 青岛海尔洗衣机有限公司 | Washing machine footing and washing machine with automatic leveling function |
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Effective date of registration: 20210304 Address after: 266400 Haier Industrial Park, qianwangang Road, Jiaonan City, Qingdao City, Shandong Province Applicant after: QINGDAO JIAONAN HAIER WASHING MACHINE Co.,Ltd. Applicant after: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Applicant after: Haier Smart Home 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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