Patent Publication Number: US-11390983-B2

Title: Support for household appliance, and household appliance

Description:
TECHNICAL FIELD 
     The present disclosure relates to a technical field of support leveling of household appliances, and specifically relates to a support for household appliance, and a household appliance. 
     BACKGROUND 
     Generally, leveling devices are arranged at bottoms of shells of the household appliances, the household appliances can achieve a stable placed state through regulating the leveling devices when the household appliances are placed, and the leveling devices can support the household appliances and keep the household appliances stable after the household appliances are placed in a leveled manner. 
     Taking a washing machine for example, bolt supports are generally mounted at the bottom of a shell or whole set of the existing washing machine, each bolt support comprises a lead screw, a nut gasket and a rubber pad. The nut gaskets can be screwed up and down on the lead screws, the lead screws can also be screwed up and down in screw holes of a bottom plate of the shell, and the height regulating of the washing machine is achieved through lengths of the lead screws of the bolt supports screwed in the screw holes of the bottom plate; for a majority of washing machines, heights are increased through counterclockwise rotation of the supports, the heights are reduced through clockwise rotation of the supports; and after the heights of the bolt supports are regulated, the nut gaskets for preventing loosening are screwed down to keep steadiness. 
     For the supports of the washing machine, although the leveling of the washing machine is achieved, users are required to carry out manual regulation, and user operation is extremely inconvenient if the dead weight of the washing machine is relatively heavy or a setting space is narrow and small. In addition, during the long-term working of the washing machine, vibration also acts on the leveling supports, the supporting failure of the leveling supports is easily caused, and thus, the out-of-flat placement of the washing machine is caused. 
     For example, the existing 8 KG drum washing machine is generally about 80 Kg and is relatively heavy, the regulation by customers is extremely inconvenient, the condition that the washing machine is regulated to an optimum state cannot be guaranteed even if the regulation is completed. During the washing, particularly spin-drying dewatering of acceleration to 1400 r/min from 0 r/min of the washing machine, great vibration will be caused once the washing machine is not horizontal or suffers from a failure support problem, and thus, the comfort of use of the customers is greatly affected. 
     In addition, the vibration caused by the out-of-flat of the washing machine may loosen screws of the supports, supporting brackets of the supports may vertically move, a horizontal state of the washing machine may be changed by the instability, and vibration that is more intensive is caused. Due to the vicious cycle, the noise of the washing machine will become louder and louder in long-time use, certain damage to the washing machine is caused, and the service life of the washing machine is shortened. 
     Therefore, the leveling of the existing washing machines has the problems of manual regulation, time and labor consuming and relatively poor accuracy. 
     Taking this into consideration, the present disclosure is provided. 
     SUMMARY 
     In order to solve the above problems, a first object of the present disclosure is to provide a support for household appliance, and concretely, a technical scheme as follows is adopted. 
     A support for household appliance comprises:
         a hydraulic plate, which is fixed to the bottom of the household appliance;   a sheath, which is fixedly connected with the hydraulic plate;   a regulating support, which is arranged in the sheath and is axially movable relative to the sheath;   an accommodation chamber, which is formed by the hydraulic plate, the sheath and the regulating support; and   a flexible accommodation body, which accommodates a liquid medium and is arranged in the accommodation chamber;   the flexible accommodation body extends and retracts to drive the regulating support to axially move in the sheath for leveling under the action of pressure; and   the hydraulic plate is locally embedded inside the sheath.       

     Further, a bulging embedding part is arranged on one face, facing to the sheath, of the hydraulic plate and is embedded inside the sheath. 
     Further, the sheath comprises an internal hollow sleeve part, and one end of the regulating support is sleeved by the sleeve part and the regulating support is axially movable relatively. The upper end of the sleeve part is flanged outward to form the mounting plane, and the mounting plane is fit with the bottom face of the hydraulic plate and is fixedly connected with the bottom face of the hydraulic plate; and the embedding part is embedded inside a sleeve part. 
     Further, the hydraulic plate comprises a square plate body, the sleeve part is of a cylindrical structure, an outward flanging of the upper end of the cylindrical structure forms a square mounting plane which is matched with the hydraulic plate, and a square flat-plate structure is fit with the square mounting plane and is fixedly connected with the square mounting plane; 
     and the embedding part is a cylindrical bulge which bulges from the surface of the square plate body, and the cylindrical bulge is embedded inside the cylindrical structure. 
     Further, a hydraulic plate groove is formed in an end face of a part, embedded inside the sheath, of the hydraulic plate; the flexible accommodation body is provided with an opening part, and the opening part of the flexible accommodation body is deformed under pressure of a pressing ring and fills the hydraulic plate groove for sealing; 
     preferably, the hydraulic plate groove is formed in the end face of the embedding part. 
     Further, the embedding part comprises a first embedding part bulging from a plane of the hydraulic plate and a second embedding part bulging from a plane of the first embedding part. 
     The pressing ring comprises a radial projecting part, the inner diameter of the radial projecting part is smaller than the outer diameter of the opening part of the flexible accommodation body, the pressing ring is fixed to the bottom face of the first embedding part, and the opening part of the flexible accommodation body is deformed under pressure of the radial projecting part and fills the hydraulic plate groove for sealing. 
     Further, the hydraulic plate further comprises liquid outlet nozzles, and the liquid flow passage is formed inside the hydraulic plate and communicates with the liquid outlet nozzles and the interior of the flexible accommodation body; and the liquid outlet nozzles are arranged in a manner of being lower than an upper plane of the hydraulic plate. 
     Further, a projecting base part is further formed on the bottom face of the hydraulic plate, and the liquid outlet nozzles are arranged on the base part; 
     preferably, the projecting base part and the embedding part are arranged in a same level and are interconnected. 
     Further, liquid nozzle outlets which are used for the yielding mounting of the liquid outlet nozzles are formed in the sheath; 
     preferably, openings which communicating with each other are correspondingly formed in the mounting plane and the sleeve part respectively to form the liquid nozzle outlets, and the base part is embedded in the liquid nozzle outlets for the yielding mounting of the liquid outlet nozzles. 
     A second disclosure object of the present disclosure is to provide a household appliance with the support for household appliance according to any one of the above-mentioned items. 
     According to the support for household appliance, provided by the embodiment, the household appliance is automatically leveled by using the hydraulic principle, and the leveling is simple and reliable; and as the household appliance (for example, a washing machine) generally generates vibration during working, in order to guarantee the stability of running of the household appliance, the overall height of the support for household appliance, provided by the embodiment, should be lowered as far as possible to lower the center of gravity of the household appliance. 
     According to the support for household appliance, provided by the embodiment, the hydraulic plate is locally embedded inside the sheath, thus, the overall height of the support for household appliance is reduced while the overall strength of the hydraulic plate is guaranteed, and the household appliance can achieve better shock absorption stability. In addition, the hydraulic plate is locally embedded inside the sheath, and thus, the sheath also plays a certain role in protecting the hydraulic plate. 
     According to the household appliance provided by the present disclosure, by adopting the support for household appliance, automatic leveling is achieved, the mounting is simple and convenient, and the overall vibration and noise of the household appliance are lowered. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a three-dimensional structural top view of a support for household appliance of embodiment I of the present disclosure; 
         FIG. 2  is a three-dimensional structural upward view of the support for household appliance of embodiment I of the present disclosure; 
         FIG. 3  is a front view of the support for household appliance of embodiment I of the present disclosure; 
         FIG. 4  is a sectional view of the support for household appliance of embodiment I of the present disclosure; 
         FIG. 5  is a mounting schematic diagram of the support for household appliance of embodiment I of the present disclosure; 
         FIG. 6  is a front view of a support for household appliance of embodiment II of the present disclosure; 
         FIG. 7  is a top view of the support for household appliance of embodiment II of the present disclosure; 
         FIG. 8  is a sectional view of the support for household appliance of embodiment II of the present disclosure along a plane H-H in the  FIG. 7 ; 
         FIG. 9  is a local exploded view of the support for household appliance of embodiment II of the present disclosure; 
         FIG. 10  is a three-dimensional structural schematic diagram of a support for household appliance of embodiment III of the present disclosure; 
         FIG. 11  is a front view of the support for household appliance of embodiment III of the present disclosure; 
         FIG. 12  is a top view of a support for household appliance of an embodiment III of the present disclosure; 
         FIG. 13  is a sectional view of the support for household appliance of embodiment III of the present disclosure along a plane A-A in the  FIG. 12 ; 
         FIG. 14  is a sectional view of the support for household appliance of embodiment III of the present disclosure along a plane B-B in the  FIG. 12 ; 
         FIG. 15  is a sectional view of the support for household appliance of embodiment III of the present disclosure along a plane C-C in the  FIG. 12 ; 
         FIG. 16  is a sectional view of an implementation mode of a support for household appliance of embodiment IV of the present disclosure; 
         FIG. 17  is a sectional view of another implementation mode of the support for household appliance of embodiment IV of the present disclosure; 
         FIG. 18  is a sectional view of another implementation mode of the support for household appliance of embodiment IV of the present disclosure; 
         FIG. 19  is a sectional view of another implementation mode of the support for household appliance of embodiment IV of the present disclosure; 
         FIG. 20  is a sectional view of another implementation mode of the support for household appliance of embodiment IV of the present disclosure; 
         FIG. 21  is a local exploded view of the support for household appliance of embodiment IV of the present disclosure; 
         FIG. 22  is a partial assembly drawing of the support for household appliance of embodiment IV of the present disclosure; 
         FIG. 23  is a three-dimensional structural schematic diagram I of a flexible accommodation body of the support for household appliance of embodiment IV of the present disclosure; 
         FIG. 24  is a three-dimensional structural schematic diagram II of the flexible accommodation body of the support for household appliance of embodiment IV of the present disclosure; 
         FIG. 25  is a sectional view of an implementation mode of a support for household appliance of embodiment V of the present disclosure; 
         FIG. 26  is a sectional view of another implementation mode of the support for household appliance of embodiment V of the present disclosure; 
         FIG. 27  is a sectional view of another implementation mode of the support for household appliance of embodiment V of the present disclosure; 
         FIG. 28  is a sectional view of another implementation mode of the support for household appliance of embodiment V of the present disclosure; 
         FIG. 29  is a top view of a support for household appliance of embodiment VI of the present disclosure; 
         FIG. 30  is a stereogram of the support for household appliance of embodiment VI of the present disclosure; 
         FIG. 31  is a local enlarged view of a position A in the  FIG. 30  of embodiment VI of the present disclosure; 
         FIG. 32  is a sectional view of the  FIG. 31  of embodiment VI of the present disclosure; 
         FIG. 33  is an exploded view of the  FIG. 31  of embodiment VI of the present disclosure; 
         FIG. 34  is a local enlarged view of a position B in the  FIG. 30  of embodiment VI of the present disclosure; and 
         FIG. 35  is a sectional view of the  FIG. 34  of embodiment VI of the present disclosure. 
     
    
    
     Reference Signs:  100 —hydraulic plate,  101 —liquid outlet nozzle,  102 —hydraulic plate hole,  103 —liquid hole,  104 —hydraulic plate groove,  105 —annular bulge,  106 —second embedding part,  107 —liquid flow passage,  108 —first embedding part,  109 —base part,  110 —passage,  200 —sheath,  201 —mounting plane,  202 —guiding limiting groove,  203 —sheath hole,  204 —sheath projecting part,  205 —sheath groove,  206 —liquid nozzle outlet,  207 —second guiding limiting groove,  208 —first guiding limiting groove,  209 —stopping part,  300 —regulating support,  301 —guiding limiting convex portion,  302 —first guiding limiting block,  303 —second guiding limiting block,  400 —rubber gasket,  401 —pattern,  500 —pressing ring,  501 —radial projecting part,  502 —axial projecting part,  503 —pressing ring groove,  504 —annular groove,  505 —pressing ring mounting hole,  600 —flexible accommodation body,  601 —opening part,  602 —accommodating body,  603 —small-diameter part,  700 —bottom plate,  701 —mounting hole,  900 —snap-in connecting member,  901 —snap-in connecting part,  902 —reinforcing apron,  903 —first fixing hole,  1000 —support for household appliance,  1100 —high-pressure pipe,  1200 —communicating member,  1201 —communicating member liquid outlet nozzle,  1202 —main cavity,  1203 —third fixing hole,  1204 —oil charging hole and  1205 —flow passage. 
     DETAILED DESCRIPTION 
     A support for household appliance and a household appliance provided by the present disclosure are described in detail below with reference to the drawings. 
     Embodiment I 
     Referring to  FIG. 1  to  FIG. 5 , a support for household appliance comprises:
         a hydraulic plate  100 , which is fixed to the bottom of the household appliance;   a sheath  200 , which is fixedly connected with the hydraulic plate  100 ;   a regulating support  300 , which is arranged in the sheath  200  and is axially movable relative to the sheath  200 ;   an accommodation chamber, which is formed by the hydraulic plate  100 , the sheath  200  and the regulating support  300 ; and   a flexible accommodation body, which accommodates a liquid medium and is arranged in the accommodation chamber; and   the flexible accommodation body extends and retracts to drive the regulating support  300  to axially move in the sheath  200  for leveling under the action of pressure.       

     According to the support for household appliance, provided by this embodiment, based on the hydraulic principle, the accommodation chamber is formed by the hydraulic plate  100 , the sheath  200  and the regulating support  300 , and the flexible accommodation body which accommodates the liquid medium is arranged in the accommodation chamber. So that for different pressures resulting from unflatness, the support for household appliance performs adaptive regulation automatically by means of the fluidity of the hydraulic medium; and the liquid medium circulates among all supports, so that the range of regulation is wider, and the effect of regulation is better. 
     According to the support for household appliance, provided by this embodiment, the hydraulic plate  100  is directly fixed to the bottom of the household appliance, the sheath  200  and the hydraulic plate  100  are fixedly connected. Thus, the hydraulic plate  100  is clamped by the bottom of the household appliance and the sheath  200 , the strength of fixed connection between the hydraulic plate  100  and the sheath  200  is not necessary, a main purpose of connection between the hydraulic plate  100  and the sheath  200  is to form an integrated support, and the strength of the connection is irrelevant to the size of gravity of the household appliance and the size of a supporting force of the regulating support  300 . Therefore, for the support for household appliance, provided by the present disclosure, the hydraulic plate  100  and the sheath  200  can be rapidly, reliably and fixedly connected, the requirements on the strength of connection between the hydraulic plate  100  and the sheath  200  are lowered, and the essential space and height required by the connection are further lowered. 
     In summary, the support for household appliance, provided by this embodiment, is simpler in structure, simpler and more convenient in mounting and has better stability. 
     In addition, in the structural design of the support for household appliance, provided by this embodiment, the overall height of the support for household appliance can be further lowered, and thus, the support for household appliance has a better shock absorption effect on the household appliance. Taking a washing machine as an example , the support for household appliance, provided by the present disclosure, has a better shock absorption effect on dewatering vibration of the washing machine. 
     In order to guarantee the stability of mounting of the support for household appliance, provided by the embodiment, and meanwhile lower the overall height of the support for household appliance, as a preferred embodiment of the embodiment, the upper end of the sheath  200  is flanged outward to form a mounting plane  201 , and the mounting plane  201  is fit with the bottom face of the hydraulic plate  100  and is fixedly connected with the bottom face of the hydraulic plate  100 . 
     According to the embodiment, the mounting plane  201  of the sheath  200  is fit with the hydraulic plate  100 , thus, more pressure is transferred to the mounting plane  201  and is dispersed, and the hydraulic plate  100  is prevented from bearing too high pressure. A liquid flow passage for circulating the hydraulic medium is formed inside the hydraulic plate  100 , and the stability of the hydraulic plate  100  is a key of the stabilizing and leveling of the entire support for household appliance. According to the embodiment, the mounting plane  201  is formed by the outward flanging of the upper end of the sheath  200 , thus, the mounting contact area of the sheath  200  and the hydraulic plate  100  is increased, and the stability and dispersancy of force transfer to the mounting plane  201  of the sheath  200  from the hydraulic plate  100  are better facilitated. 
     In addition, the mounting plane  201  of the sheath  200  is fit with the hydraulic plate  100  and is fixedly connected with the hydraulic plate  100 , designing mounting structures on the sheath  200  or hydraulic plate  100  is omitted, and the overall structure of the support for household appliance is lowered. 
     Further, in the embodiment, the outline of the mounting plane  201  is matched with that of the hydraulic plate  100 , and the mounting plane  201  is fit with the bottom face of the hydraulic plate  100  and is fixedly connected with the bottom face of the hydraulic plate  100 . Thus, a pressure force borne by the hydraulic plate  100  can be better correspondingly transferred to the mounting plane of the sheath  200 , stress concentration of local parts of the hydraulic plate  100  caused by the mounting plane  201  is avoided, and the stable circulation of the hydraulic medium in the hydraulic plate is better facilitated. 
     Preferably, in the embodiment, the outline of the hydraulic plate  100  is similar to or the same as that of the mounting plane  201 . Thus, the mounting is simpler and more convenient through corresponding the hydraulic plate  100  and the mounting plane  201 . 
     Concretely, in the embodiment, the sheath  200  comprises an internal hollow sleeve part, one end of the regulating support  300  is sleeved by the sleeve part and the regulating support can axially move relatively. The upper end of the sleeve part is flanged outward to form the mounting plane  201 , and the mounting plane  201  is fit with the bottom face of the hydraulic plate  100  and is fixedly connected with the bottom face of the hydraulic plate  100 . According to the embodiment, the mounting plane  201  is formed by the outward flanging of the upper end of the sleeve part, the regulating support  300  axially moves in the sheath  200 . Only the area of the mounting plane is increased while the whole sheath  200  is not enlarged, thus, materials are saved, and the cost is reduced. 
     Concretely, in the embodiment, the hydraulic plate  100  is of a square flat-plate structure, the sleeve part is of a cylindrical structure, an outward flanging of the upper end of the cylindrical structure forms the square mounting plane  201  which is matched with the hydraulic plate, and the square flat-plate structure is fit with the square mounting plane and is fixedly connected with the square mounting plane. 
     In order to achieve that the support for household appliance, provided by the embodiment, is fixedly mounted at the bottom of the household appliance, concretely, the sheath  200  and the hydraulic plate  100  are fixedly mounted at the bottom of the household appliance through connecting devices, and the hydraulic plate  100  is clamped between the mounting plane  201  of the sheath  200  and a bottom plane of the household appliance. 
     As a mounting mode of the embodiment, the bottom of the household appliance provided by the embodiment is provided with a bottom plate  700 , mounting holes  701  are formed in the bottom plate  700 , hydraulic plate holes  102  are formed in the hydraulic plate  100 , and sheath holes  203  are formed in the sheath  200 . The connecting devices are connecting bolts/connecting screws, and the connecting bolts/connecting screws sequentially penetrate through the sheath holes  203  and the hydraulic plate holes  102  and are fastened to the mounting holes  701 . According to the embodiment, the fixed mounting of the sheath  200 , the hydraulic plate  100  and the bottom plate  700  of the household appliance is achieved in one time through the connecting bolts/connecting screws, and the mounting is simple and convenient. 
     Further, the holes of the sheath  200  are uniformly distributed along the circumferential direction of the mounting plane  201 , the hydraulic plate holes  102  are uniformly distributed along the circumferential direction of the hydraulic plate  100 , and the mounting holes  701  are formed in the bottom plate  700  of the household appliance corresponding to the hydraulic plate holes  102  and the sheath holes  203 . Thus, the stability of fixed mounting can be improved. 
     Preferably, at least two mounting holes  701 , at least two hydraulic plate holes  102  and at least two sheath holes  203  are formed. Further, preferably, four mounting holes  701 , four hydraulic plate holes  102  and four sheath holes  203  are formed to correspond to the square flat-plate structure and the square mounting plane. 
     As a mounting mode of the embodiment, the sheath  200  and the hydraulic plate  100  are fixedly connected in a snap-in connection, bonding, hot-melting or welding manner and then are fixedly mounted at the bottom of the household appliance. 
     According to the embodiment, the hydraulic plate  100  is made of plastics through integral injection molding or made of metal through die-casting, and the sheath is made of plastics through integral injection molding or made of a metallic material through die-casting. 
     According to stress characteristics of the support for household appliance, provided by the embodiment, preferably, the hydraulic plate  100  is made of plastics through integral injection molding, and the sheath  200  is made of metal through die-casting. Because the sheath  200  is subjected to greater stress, the sheath  200  is made of metal through die-casting to guarantee strength, thus, the support for household appliance, provided by the embodiment, is lower in manufacturing cost, and the overall strength of the support for household appliance is guaranteed. 
     Partial gravity F 1  of the household appliance is applied to the hydraulic plate  100  through the bottom plate  700 , stress of a plane of the hydraulic plate  100  is transferred to the mounting plane  201  of the sheath  200 , stress of the interior of the hydraulic plate  100  is transferred to the regulating support  300  through hydraulic pressure, the regulating support  300  similarly bears a supporting force F 2  from a supporting surface, the F 1  is equal to the F 2 , stress of the regulating support  300  is transferred to the plane of the hydraulic plate  100 , and the stress is then transferred to the bottom plate  700  of the household appliance by the hydraulic plate  100 . By such a design, although the hydraulic plate  100  bears a pressure force of internal liquid flow passage, a partial gravity force of the washing machine and the supporting force of the regulating support  300 , the forces are all transferred to the mounting plane  201  of the sheath  200 , the regulating support  300  and the bottom plate  700  of the household appliance. 
     Embodiment II 
     Referring to  FIG. 6  to  FIG. 9 , a support for household appliance comprises:
         a hydraulic plate  100 , which is fixed to the bottom of the household appliance;   a sheath  200 , which is fixedly connected with the hydraulic plate  100 ;   a regulating support  300 , which is arranged in the sheath  200  and is axially movable relative to the sheath  200 ;   an accommodation chamber, which is formed by the hydraulic plate  100 , the sheath  200  and the regulating support  300 ; and   a flexible accommodation body  600 , which accommodates a liquid medium and is arranged in the accommodation chamber; and   the flexible accommodation body  600  extends and retracts to drive the regulating support  300  to axially move in the sheath  200  for leveling under the action of pressure; and   the hydraulic plate  100  is locally embedded inside the sheath  200 .       

     According to the support for household appliance, provided by this embodiment, based on the hydraulic principle, the support can perform adaptive regulation automatically by means of the fluidity of the hydraulic medium for different pressures resulting from unflatness, the hydraulic medium stops circulating until the support for household appliance achieves balance, and thus, automatic leveling is achieved. 
     According to the support for household appliance, provided by the embodiment, the household appliance is automatically leveled by using the hydraulic principle, and the leveling is simple and reliable; and as the household appliance (for example, a washing machine) generally generates vibration during working, in order to guarantee the stability of running of the household appliance, the overall height of the support for household appliance, provided by the embodiment, should be lowered as far as possible to lower the center of gravity of the household appliance. 
     According to the support for household appliance, provided by the embodiment, the hydraulic plate  100  is locally embedded inside the sheath  200 , thus, the overall height of the support for household appliance is reduced while the overall strength of the hydraulic plate  100  is guaranteed, and the household appliance can achieve better shock absorption stability. In addition, the hydraulic plate  100  is locally embedded inside the sheath  200 , and thus, the sheath  200  also plays a certain role in protecting the hydraulic plate  100 . 
     Concretely, in the embodiment, a bulging embedding part  108  is arranged on one face, facing to the sheath  200 , of the hydraulic plate  100  and is embedded inside the sheath  200 . According to the embodiment, the embedding part  108  bulges from the hydraulic plate  100 , thus, the hydraulic plate  100  has adequate strength, and the stability of flowing of the hydraulic medium in the hydraulic plate  100  is guaranteed; and the embedding part  108  is embedded inside the sheath  200 , thus, the thickness of mounting of the hydraulic plate  100  is reduced, the overall height of the support for household appliance is reduced, and the household appliance can have better supporting stability. 
     Further, in the embodiment, the sheath  200  comprises an internal hollow sleeve part, and one end of the regulating support  300  is sleeved by the sleeve part and the regulating support is axially movable relatively. The upper end of the sleeve part is flanged outward to form the mounting plane  201 , and the mounting plane  201  is fit with the bottom face of the hydraulic plate  100  and is fixedly connected with the bottom face of the hydraulic plate  100 ; and the embedding part  108  is embedded inside a sleeve part. According to the embodiment, the embedding part  108  further has a locating function when the hydraulic plate  100  and the sheath  200  are fixedly connected. 
     Further, in the embodiment, the hydraulic plate comprises a square plate body, the sleeve part is of a cylindrical structure, an outward flanging of the upper end of the cylindrical structure forms a square mounting plane which is matched with the hydraulic plate, and a square flat-plate structure is fit with the square mounting plane and is fixedly connected with the square mounting plane; and the embedding part  108  is a cylindrical bulge which bulges from the surface of the square plate body, and the cylindrical bulge is embedded inside the cylindrical structure. 
     According to the embodiment, a mounting structure between the hydraulic plate  100  and the sheath  200  is designed according to structural features of the hydraulic plate  100  and the sheath  200 , and the square flat-plate structure is fit with the square mounting plane and is fixedly connected with the square mounting plane, so that the mounting is simple and convenient, and the overall height is reduced. The embedding part  108  is embedded inside the cylindrical structure, and the overall strength of the hydraulic plate  100  is ensured by using an internal space of the cylindrical structure; and the embedding part  108  is designed into the cylindrical bulge and can be matched with the interior of the cylindrical structure to exert a locating function, and the fixed connection between the hydraulic plate  100  and the sheath  200  is better facilitated. 
     According to the embodiment, the hydraulic medium in the flexible accommodation body  600  flows through the liquid flow passage  107  in the hydraulic plate  100 , and the accommodation chamber is formed by the hydraulic plate  100 , the sheath  200  and the regulating support  300 . Therefore, in order to guarantee that the hydraulic medium in the flexible accommodation body  600  can enter the hydraulic plate  100 , a hydraulic plate groove  104  is formed in an end face of a part, embedded inside the sheath, of the hydraulic plate  100 ; the flexible accommodation body  600  has an opening part, and the opening part of the flexible accommodation body  600  is deformed under pressure of a pressing ring  500  and fills the hydraulic plate groove  104  for sealing. According to the embodiment, the hydraulic plate  100  is partially embedded in the sheath  200 , so that the hydraulic medium in the flexible accommodation body  600  can circulate into the liquid flow passage  107  in the hydraulic plate  100  by directly mounting the flexible accommodation body  600  to the embedding part in a sealed manner. 
     Preferably, the hydraulic plate groove  104  is formed in the end face of the embedding part  108 . 
     According to the embodiment, the embedding part of the hydraulic plate  100  concerns the overall strength of the hydraulic plate  100  and also concerns the sealed mounting of the flexible accommodation body  600 , so that the embedding part  108  comprises a first embedding part  108  bulging from a plane of the hydraulic plate and a second embedding part  106  bulging from a plane of the first embedding part  108 . The first embedding part  108  is mainly used for enhancing the overall strength of the hydraulic plate  100 , and the second embedding part  106  is mainly used for achieving the sealed mounting of the flexible accommodation body  600  to further enhance the overall strength of the hydraulic plate  100 . 
     In order to achieve that the flexible accommodation body  600  is mounted on the hydraulic plate  100  in a sealed manner, the pressing ring  500  comprises a radial projecting part  501 , the inner diameter of the radial projecting part  501  is smaller than the outer diameter of the opening part of the flexible accommodation body  600 , the pressing ring  500  is fixed to the bottom face of the first embedding part  106 , and the opening part of the flexible accommodation body  600  is deformed under pressure of the radial projecting part  501  and fills the hydraulic plate groove  104  for sealing. 
     Further, the hydraulic plate  100  further comprises liquid outlet nozzles  101 , and the liquid flow passage  107  is formed inside the hydraulic plate  100  and communicates with the liquid outlet nozzles  101  and the interior of the flexible accommodation body  600 ; and the liquid outlet nozzles  101  are arranged in a manner of being lower than an upper plane of the hydraulic plate  100 . According to the embodiment, the liquid outlet nozzles  101  are mainly used for being connected with high-pressure pipes, at least two household-appliance-used supports, provided by the embodiment, communicate with one another through the high-pressure pipes, thus, the hydraulic medium can circulate among the household-appliance-used supports, and leveling is carried out based on the hydraulic principle. According to the embodiment, a certain distance H 4  is present between the plane of the hydraulic plate and the liquid outlet nozzles  101 , thus, the liquid outlet nozzles  101  are lower than or level with the plane of the hydraulic plate after the liquid outlet nozzles  101  are connected with the high-pressure pipes, and the condition that the liquid outlet nozzles  101  are subjected to flexural deformation due to a bottom plate plane of the household appliance after the support for household appliance is fixed to a bottom plate of the household appliance is prevented. 
     The liquid outlet nozzles  101  are arranged in a manner of bulging from the periphery edge of the hydraulic plate  100 , the periphery of the hydraulic plate  100  is mainly mounted in a manner of being fit with the mounting plane  201  of the sheath  200 , thus, in order to reduce the overall height, the thickness of the periphery of the hydraulic plate  100  is small. Thus, pipe diameters of the liquid outlet nozzles  101  are very small, however, too small pipe diameters are not only unfavorable to the circulation of the hydraulic medium, but also cause insufficient strength, and fracture is extremely easily caused. According to the embodiment, a projecting base part  109  is further formed on the bottom face of the hydraulic plate  100 , and the liquid outlet nozzles  101  are arranged on the base part  109 . Thus, in view of the requirements of the liquid outlet nozzles  101  on structural strength, local reinforced base parts  109  are designed for the hydraulic plate  100 , thus, the pipe diameters of the liquid outlet nozzles  101  can be enlarged, and the fracture of the liquid outlet nozzles  101  is avoided. 
     Preferably, the projecting base part  109  and the embedding part are arranged in a same level and are interconnected. According to the embodiment, the liquid flow passage  107  inside the hydraulic plate  100  is arranged at the embedding part, and the influence on the flowing of the hydraulic medium in the a liquid flow passage  107  caused by outside pressure is avoided due to greater thickness of the embedding part, so that by arranging the base parts  109  and the embedding part in a same level, the liquid flow passage  107  can horizontally extend to the liquid outlet nozzles  101 , and the stable circulation of the hydraulic medium is ensured. 
     Further, in view of a structure of the sheath  200 , the upper end part of the sheath  200  is flanged to form the mounting plane  201 , so that liquid nozzle outlets  206  which are used for the yielding mounting of the liquid outlet nozzles  101  are formed in the sheath  200 . Thus, the liquid outlet nozzles  101  can be mounted in a non-interference manner. 
     Preferably, openings which communicating with each other are correspondingly formed in the mounting plane  201  and the sleeve part respectively to form the liquid nozzle outlets  206 , and the base part  109  is embedded in the liquid nozzle outlets for the yielding mounting of the liquid outlet nozzles  101 . 
     According to the embodiment, the hydraulic plate  100  has the embedding part and is partially embedded to the sheath  200  by a certain distance, i.e., H 5  shown in  FIG. 8 , so that the embedding part is protected by an inner-tube structure of the sheath  200 , the reliability is improved, the height of the entire structure is reduced, and meanwhile, the shock absorption performance is further improved. 
     Due to a partial embedded design of the hydraulic plate  100 , positions of the liquid outlet nozzles  101  are lowered; yielding ports are formed in the sheath  200  corresponding to the positions of the liquid outlet nozzles  101 , so that the liquid outlet nozzles  101  can stretch out without interference; and the base part  109  which is used for exerting a strengthening action are designed at connections of the liquid outlet nozzles  101  and the hydraulic plate  100 . 
     Embodiment III 
     Referring to  FIG. 10  to  FIG. 15 , a support for household appliance comprises:
         a hydraulic plate  100 ;   a sheath  200 , which is fixedly connected with the hydraulic plate  100 ;   a regulating support  300 , which is arranged in the sheath  200  and is axially movable relative to the sheath  200 ;   an accommodation chamber, which is formed by the hydraulic plate  100 , the sheath  200  and the regulating support  300 ; and   a flexible accommodation body  600 , which accommodates a liquid medium and is arranged in the accommodation chamber;   the flexible accommodation body  600  extends and retracts to drive the regulating support  300  to axially move in the sheath  200  for leveling under the action of pressure; and   the sheath  200  and/or the regulating support  300  are/is provided with a guiding limiting mechanism which is used for limiting the circumferential rotation of the regulating support  300  relative to the sheath  200 , and a yielding part corresponding to the guiding limiting mechanism is formed in the hydraulic plate  100 .       

     According to the support for household appliance, provided by this embodiment, based on the hydraulic principle, the support can perform adaptive regulation automatically by means of the fluidity of the hydraulic medium for different pressures resulting from unflatness, the hydraulic medium stops circulating until the support for household appliance achieves balance, and thus, automatic leveling is achieved. 
     According to the support for household appliance, provided by the embodiment, the household appliance is automatically leveled by using the hydraulic principle, and the leveling is simple and reliable. The regulating support  300  is arranged in the sheath  200  in a manner of being capable of axially moving relative to the sheath  200 , and the regulation on the household appliance is only limited to a vertical direction, so that in order to guarantee the stability of leveling, the rotation of the regulating support  300  relative to the sheath  200  is required to be limited. Therefore, the guiding limiting mechanism is used for limiting the regulating support  300  to move along a required direction relative to the sheath  200 . 
     As the household appliance (for example, a washing machine) generally will generate vibration during working, in order to guarantee the stability of running of the household appliance, the overall height of the support for household appliance, provided by the embodiment, should be lowered as far as possible to lower the center of gravity of the household appliance. Therefore, the yielding part is formed in the hydraulic plate  100  corresponding to the guiding limiting mechanism, the axial moving of the regulating support  300  is not affected while the guiding limiting mechanism is arranged, the overall height of the support for household appliance is lowered, and the stability of shock absorption of the support for household appliance is improved. Concretely, the guiding limiting mechanism comprises a guiding limiting groove/guiding limiting convex portion arranged on the internal wall of the sheath and guiding limiting convex portion/guiding limiting groove correspondingly arranged on the external wall of the regulating support. The guiding limiting convex portions are arranged in the guiding limiting grooves in a relative slidable manner to limit the circumferential rotation of the regulating support relative to the sheath. According to the embodiment, the axial moving of the regulating support  300  is guided through matching between the guiding limiting grooves and the guiding limiting convex portions, and thus, the structure is simple and reliable. 
     According to the embodiment, the yielding part is provided corresponding to the guiding limiting convex portion/guiding limiting groove of the regulating support  300 , the regulating support  300  moves towards the hydraulic plate  100 , and one end of each guiding limiting convex portion/guiding limiting groove of the regulating support  300  enters one corresponding yielding part. According to the embodiment, in view of the axial moving of the regulating support  300 , only the yielding part is required to be arranged corresponding to the guiding limiting convex portion/guiding limiting groove of the regulating support  300  regardless of the type of the guiding limiting mechanism, so that on the premise of not changing regulating height, the overall height of the support for household appliance is lowered, and the stability of guiding and limiting is guaranteed. 
     As a preferred implementation mode of the embodiment, guiding limiting groove  202  is provided in the internal wall of the sheath  200  along an axial direction of the sheath  200 , guiding limiting convex portion  301  is arranged on the external wall of the regulating support  300  and the guiding limiting convex portion  301  is arranged in the guiding limiting groove  202  in a relative slidable manner to limit the circumferential rotation of the regulating support  300  relative to the sheath  200 . 
     According to the embodiment, the yielding part is a passage  110  formed in the hydraulic plate  100  corresponding to the guiding limiting convex portion  301 , the regulating support  300  axially moves up and down in the sheath  200 , and one end of each guiding limiting convex portion  301  goes into/out of one corresponding passage  110 . 
     Therefore, according to the support for household appliance, provided by the embodiment, one end of each guiding limiting convex portion  301  goes into/out of one corresponding passage, so that a greater regulating height is present under the condition of the same overall height; and under the condition of the same regulating height, the support for household appliance, provided by the embodiment, can have a smaller overall height. 
     As a preferred implementation mode of the embodiment, each guiding limiting convex portion  301  comprises a first guiding limiting block  302  and a second guiding limiting block  303 . The first guiding limiting block  302  is fixed to the external wall of the regulating support  300 , and the second guiding limiting block  303  is fixed to the first guiding limiting blocks  302  and extends by a certain height towards the hydraulic plate  100 . According to the embodiment, the first guiding limiting block  302  mainly plays a role in carrying out guiding and limiting in the guiding limiting groove  202 , the second guiding limiting block  303  prolongs the first guiding limiting block  302 , and thus, the stability of guiding and limiting is better. 
     According to the embodiment, the passage  110  is formed corresponding to the second guiding limiting block  303 , the regulating support  300  axially moves up and down in the sheath  200 , and the second guiding limiting block  303  goes into/out of the passage  110 . Thus, the stability of guiding and limiting is improved on the premise of not increasing the overall height of the support for household appliance. 
     Further, the height of the second guiding limiting block  303  is smaller than or equal to the thickness of the hydraulic plate  100 . Thus, the second guiding limiting block  303  will not stretch out of the upper part of the hydraulic plate  100  and affect the axial moving of the regulating support  300  when the second guiding limiting block  303  goes in/out of the passage  110 . 
     As a preferred implementation mode of the embodiment, a plurality of guiding limiting mechanisms are provided and are separately distributed along circumferential direction of the sheath  200  and/or the regulating support  300 , and a plurality of yielding parts are provided in the hydraulic plate  100  corresponding to the guiding limiting mechanisms. By arranging several guiding limiting mechanisms, the stability of limiting is further improved, and the effect of guiding and limiting is better. 
     Preferably, a plurality of guiding limiting grooves  202  are distributed in the internal wall of the sheath  200  along a circumferential direction, a plurality of guiding limiting convex portions  301  are formed on the external wall of the regulating support  300  corresponding to the guiding limiting grooves  202 , and a plurality of yielding parts are formed on the hydraulic plate  100  corresponding to the guiding limiting convex portions  301 . 
     Concretely, in view of a concrete structure of the hydraulic plate  100  and a concrete structure of the sheath  200  and in the present embodiment, the hydraulic plate  100  comprises a plate-type body, a base part  109  bulging from the bottom face of the plate-type body and liquid outlet nozzles  101  arranged on the base parts  109 . According to the embodiment, a first guiding limiting groove  208  corresponding to the plate-type body and a second guiding limiting groove  207  corresponding to the base part  109  are formed in the internal wall of the sheath  200 , and first guiding limiting convex portion matches with the first guiding limiting groove  208  and second guiding limiting convex portion matches with the second guiding limiting groove are formed on the external wall of the regulating support  300 . 
     The yielding part is arranged on the hydraulic plate  100  corresponding to the first guiding limiting convex portion, the regulating support  300  moves towards the hydraulic plate  100 , and one end of each first guiding limiting convex portion enters one corresponding yielding part. 
     The liquid outlet nozzle  101  communicates with the liquid flow passage, so that in order to guarantee the stability of flowing of the hydraulic medium, yielding part is not formed on the hydraulic plate  100  corresponding to the liquid outlet nozzle  101  anymore. 
     Concretely, the first guiding limiting convex portion comprises a first guiding limiting block  302  bulging from the external wall of the regulating support  300 ; and the second guiding limiting convex portion comprises a first guiding limiting block  302  bulging from the external wall of the regulating support  300  and a second guiding limiting block  303  which is fixed to the first guiding limiting blocks  302  and extends towards the hydraulic plate by a certain height. 
     According to the embodiment, the sheath  200  comprises an internal hollow sleeve part, and one end of the regulating support  300  is sleeved by the sleeve part and is axially movable relatively; the upper end of the sleeve part is flanged outward to form the mounting plane  201 , and the mounting plane  201  is fit with the bottom face of the plate-type body and is fixedly connected with the bottom face of the plate-type body; and the circumferential wall of the sleeve part outwards bulges to form a guiding limiting groove which is a same level with the mounting plane. 
     According to the embodiment, in order to achieve the up and down movement of the regulating support  300  in the sheath  200  and prevent circumferential rotation, a certain quantity of guiding limiting grooves  202  are formed in the circumference of the sheath  200 , and the quantity is N which is greater than or equal to 1. In a graphic illustration of the present disclosure, N is 4 preferably. 
     Corresponding guiding limiting convex portion  301  is arranged on the circumference of the regulating support  300 , and the quantity of the guiding limiting convex portions is N which is greater than or equal to 1. In a graphic illustration of the present disclosure, N is 4 preferably. The guiding limiting convex portion  301  can move in the guiding limiting groove and is limited by a stopping part  209  of bottom of the guiding limiting groove  202  to prevent the regulating support  300  from falling off from the sheath  200 . 
     In order to reduce the height of the support for household appliance as far as possible and achieve better stability, the height of the sheath  200  and the height of the regulating support  300  can be reduced as far as possible in principle, particularly the height of a superposed part, i.e., H 1  in a graphic illustration under the condition of not lowering a regulating height H 0 . When H 1  is very small, the limiting action of the sheath  200  to the regulating support  300  will be lowered, and the problem such as biasing of the regulating support  300  is caused. 
     According to the embodiment, the passage  110  is ingeniously formed in the hydraulic plate  100  corresponding to the guiding limiting groove  202 , each guiding limiting convex portion  301  comprises a first guiding limiting block  302  and a second guiding limiting block  303 . The height of the second guiding limiting block  303  H 2  is higher than the circumferential face of the first guiding limiting block  302 , and the inner diameter of the second guiding limiting block  303  is greater than outer diameter of the regulating support  300 . The second guiding limiting block  303  of the regulating support  300  is further limited in the guiding limiting groove  202  of the sheath  200 , and the action of no biasing and stability can be achieved even if the superposed H 1  is very small. The circumferential face of the first guiding limiting block  302  is in contact with the hydraulic plate  100  to achieve a movement distance H 0 ; at this time, the second guiding limiting block  303  will not shorten a movement distance, and the second guiding limiting block  303  can further enter the passage  110  of the hydraulic plate  100  as the hydraulic plate has the thickness of H 3 ; and preferably, the height H 2  of the guiding limiting bulges is smaller than or equal to the H 3 . 
     Embodiment IV 
     Referring to  FIG. 1  to  FIG. 3  and  FIG. 16  to  FIG. 24 , a support for household appliance comprises:
         a hydraulic plate  100 , which is internally provided with a liquid flow passage  107 ;   a sheath  200 , which is fixedly connected with the hydraulic plate  100 ;   a regulating support  300 , which is arranged in the sheath  200  and is axially movable relative to the sheath  200 ;   an accommodation chamber, which is formed by the hydraulic plate  100 , the sheath  200  and the regulating support  300 ; and   a flexible accommodation body  600 , which accommodates a liquid medium and is arranged in the accommodation chamber;   the flexible accommodation body  600  extends and retracts to drive the regulating support  300  to axially move in the sheath  200  for leveling under the action of pressure; and   the flexible accommodation body  600  has an opening part  601 , and the opening part  601  is mounted on the hydraulic plate  100  in a sealed manner and communicates with the a liquid flow passage  107 .       

     According to the support for household appliance, provided by this embodiment, based on the hydraulic principle, the support can perform adaptive regulation automatically by means of the fluidity of a hydraulic medium for different pressures resulting from unflatness, the hydraulic medium stops circulating until the support for household appliance achieves balance, and thus, automatic leveling is achieved. 
     The stability of flowing of liquid is a key for achieving the leveling of the support for household appliance, provided by the embodiment, the opening part  601  of the flexible accommodation body  600  is mounted on the hydraulic plate  100  in a sealed manner, the hydraulic medium in the flexible accommodation body  600  can circulate into the a liquid flow passage  107  and flow to liquid outlet nozzles  101  through the a liquid flow passage  107 , and thus, the hydraulic medium can circulate among the household-appliance-used supports for automatic leveling. 
     As a preferred implementation mode of the embodiment, in the embodiment, the opening part  601  of the flexible accommodation body  600  is fixedly mounted on the bottom face of the hydraulic plate  100  through the pressing ring  500 , and the opening part is deformed under joint pressure of the pressing ring  500  and the hydraulic plate  100  for sealing. According to the embodiment, the opening part is deformed under pressure of the pressing ring  500  for sealing, so that the sealing is simpler and more convenient, and the sealing effect is good. 
     Further, the flexible accommodation body  600  comprises a small-diameter part  603 , the end part of the small-diameter part  603  is flanged to form the opening part  601 , the pressing ring  500  sleeves on the small-diameter part  603 , and the opening part  601  is deformed under joint pressure of the pressing ring  500  and the hydraulic plate  100  for sealing. According to the embodiment, during the sealed mounting of the flexible accommodation body  600 , the small-diameter part  603  can be firstly nested in the pressing ring  500 , only the pressing ring  500  is required to be fixedly mounted, the pressing ring  500  presses the opening part  601  during fastening, and thus, the sealed mounting is achieved. 
     Referring to  FIG. 16 , as an implementation mode of the embodiment, a hydraulic plate groove  104  is formed in the bottom face of the hydraulic plate  100 , and the opening part  601  of the flexible accommodation body  600  is deformed under pressure of the pressing ring  500  and fills the hydraulic plate groove  104  for sealing. In this mode, sealing can be achieved through fastening the pressing ring  500  and pressing the opening part  601  of the flexible accommodation body  600  to deform and fill the hydraulic plate groove  104 , the structure is simple, and the sealing is reliable and effective. 
     Preferably, a volume enclosed by the hydraulic plate groove  104  and the pressing ring  500  is smaller than the volume of the opening part  601  of the flexible accommodation body  600 . Thus, the opening part  601  of the flexible accommodation body  600  can be in tight contact with the hydraulic plate groove  104  to ensure sealing performance. 
     Further, the pressing ring  500  comprises a radial projecting part  501 , the inner diameter of the radial projecting part  501  is smaller than the outer diameter of the opening part  601  of the flexible accommodation body  600 , the pressing ring  500  is fixed to the bottom face of the hydraulic plate  100 , and the opening part  601  of the flexible accommodation body  600  is deformed under pressure of the radial projecting part  501  and fills the hydraulic plate groove  104  for sealing. The radial projecting part  501  is used for firstly limiting and sticking the opening part  601  of the flexible accommodation body  600  to facilitate locating and mounting, through fastening the pressing ring  500 , the opening part  601  is deformed under pressure of the radial projecting part  501 , and the opening part  601  enters the hydraulic plate groove  104  for sealing. 
     Preferably, the inner diameter of the radial projecting part  501  is greater than the outer diameter of the small-diameter part  603  of the flexible accommodation body  600 , the radial projecting part  501  of the pressing ring  500  sleeves on the small-diameter part  603  and limits the opening part  601  to the end part of the pressing ring  500 , and the opening part  601  of the flexible accommodation body  600  is deformed under pressure of the radial projecting part  501  and fills the hydraulic plate groove  104  for sealing. 
     Referring to  FIG. 17 , as another implementation mode of the embodiment, the pressing ring  500  comprises an axial projecting part  502  which is arranged at the end part and bulges along an axial direction, the pressing ring  500  is fixed to the bottom face of the hydraulic plate  100 , and the opening part  601  of the flexible accommodation body  600  is deformed under pressure of the axial projecting part  502  and fills the hydraulic plate groove  104  for sealing. According to the embodiment, the axial projecting part  502  extends into the hydraulic plate groove  104  when the pressing ring  500  is fixed to the bottom face of the hydraulic plate  100 , the axial projecting part  502  further presses the opening part  601  of the flexible accommodation body  600  to be in close contact with the hydraulic plate groove  104 , and thus, the sealing performance is enhanced. 
     Referring to  FIG. 18 , as another implementation mode of the embodiment, the opening part  601  of the flexible accommodation body  600  is fixedly mounted on the bottom face of the hydraulic plate  100  through the pressing ring  500 , a pressing ring groove  503  is formed in the upper end of the pressing ring  500 , and the opening part is deformed under joint pressure of the pressing ring  500  and the hydraulic plate  100  and fills the pressing ring groove  503  for sealing. Thus, the bottom face of the hydraulic plate  100  can be simply arranged as a planar structure, the bottom face of the hydraulic plate  100  presses the opening part  601  of the flexible accommodation body  600  to deform through fastening the pressing ring  500 , and thus, the opening part enters the pressing ring groove  503  for sealing. 
     Preferably, a volume enclosed by the hydraulic plate  100  and the pressing ring groove  503  is smaller than the volume of the opening part of the flexible accommodation body. Thus, the opening part  601  of the flexible accommodation body  600  is in tight contact with the pressing ring groove  503  to ensure sealing performance. 
     Referring to  FIG. 19 , as another implementation mode of the embodiment, a projecting annular bulge  105  is formed on the bottom face of the hydraulic plate  100 , the pressing ring  500  is fixed to the bottom face of the hydraulic plate  100 , and the opening part  601  of the flexible accommodation body  600  is deformed under pressure of the annular bulge  105  and fills the pressing ring groove  503  for sealing. According to the embodiment, the annular bulge  105  extends into the pressing ring groove  503  when the pressing ring  500  is fixed to the bottom face of the hydraulic plate  100 , the annular bulge  105  further presses the opening part  601  of the flexible accommodation body  600  to be in close contact with the pressing ring groove  503 , and thus, the sealing performance is enhanced. 
     Referring to  FIG. 20 , as another implementation mode of the embodiment, an annular groove  504  is formed in the pressing ring  500 , the opening part  601  of the flexible accommodation body  600  passes through the pressing ring  500  and is stuck in the annular groove  504 , and the hydraulic plate groove  104  corresponding to the annular groove  504  is formed in the bottom face of the hydraulic plate  100 . The opening part  601  of the flexible accommodation body  600  is fastened to the hydraulic plate  100  through the pressing ring  500 , and the opening part  601  of the flexible accommodation body  600  is deformed and fills the annular groove  504  and the hydraulic plate groove  104  by a fastening force in a vertical direction to form a transverse seal. 
     The annular bulge  105  which is located at an outer ring of the hydraulic plate groove  104  is formed on the bottom face of the hydraulic plate  100 , a central convex column  106  which is located within the circle of the hydraulic plate groove  104  is arranged on the bottom face of the hydraulic plate  100 , and the diameter of the central convex column  106  is greater than the outside diameter of the opening part  601  of the flexible accommodation body  600 . The annular bulge  105  enters the hydraulic plate groove  104  and presses the opening part  601  of the flexible accommodation body  600  in a transverse direction together with the central convex column  106  to form a vertical seal. 
     According to the embodiment, the connection between the flexible accommodation body  600  and the hydraulic plate  100  achieves the transverse seal and the vertical seal, and the higher the borne pressure is, the better the press sealing effect is, so that leakage of the hydraulic medium is prevented, and stability of leveling of the support for household appliance is ensured. 
     Referring to  FIG. 21  and  FIG. 22 , the pressing ring  500  is fixed to the hydraulic plate  100  through a fixing device, specifically the pressing ring  500  and the hydraulic plate  100  is fixedly connected through bolts/screws. Pressing ring mounting holes  505  are formed in the pressing ring  500 , and the bolts/screws are fastened to the hydraulic plate  100  through the pressing ring mounting holes  505 . 
     According to the embodiment, the flexible accommodation body  600  has a structure shown in  FIG. 23  and  FIG. 24  and comprises an accommodating body  602 . The accommodating body  602  is of a soft capsular structure and has a telescopic corrugation structure, and the corrugation structure is arranged in the regulating support  300  and extends and retracts along with the flowing of the liquid medium to drive the regulating support  300  to axially move in the sheath  200  for leveling. 
     Referring to  FIG. 23 , the opening part  601  of the flexible accommodation body  600  is of an O ring shape. 
     Referring to  FIG. 24 , the opening part  601  of the flexible accommodation body  600  is of a rectangular shape, and of course, rectangular sides can be subjected to round-off treatment, so that the volume of the opening is effectively increased, and the sealing effect is effectively improved. 
     Embodiment V 
     Referring to  FIG. 1  to  FIG. 3  and  FIG. 25  to  FIG. 28 , a support for household appliance comprises:
         a hydraulic plate  100 , which is internally provided with a liquid flow passage  107 ;   a sheath  200 , which is fixedly connected with the hydraulic plate  100 ;   a regulating support  300 , which is arranged in the sheath  200  and is axially movable relative to the sheath  200 ;   an accommodation chamber, which is formed by the hydraulic plate  100 , the sheath  200  and the regulating support  300 ; and   a flexible accommodation body  600 , which accommodates a liquid medium and is arranged in the accommodation chamber;   the flexible accommodation body  600  extends and retracts to drive the regulating support  300  to axially move in the sheath  200  for leveling under the action of pressure; and   the flexible accommodation body  600  has an opening part  601 , and the opening part  601  is mounted on the hydraulic plate  100  through the sheath  200  in a sealed manner and communicates with the a liquid flow passage  107 .       

     According to the support for household appliance, provided by this embodiment, based on the hydraulic principle, the support can perform adaptive regulation automatically by means of the fluidity of the hydraulic medium for different pressures resulting from unflatness, the hydraulic medium stops circulating until the support for household appliance achieves balance, and thus, automatic leveling is achieved. 
     The stability of flowing of liquid is a key for achieving the leveling of the support for household appliance, provided by the embodiment, the opening part  601  of the flexible accommodation body  600  is mounted on the hydraulic plate  100  in a sealed manner while the opening part  601  is fixedly mounted by using the sheath  200 ; the hydraulic medium in the flexible accommodation body  600  circulates into the liquid flow passage  107  and flows to liquid outlet nozzles  101  through the liquid flow passage  107 , and thus, the hydraulic medium can circulate among the household-appliance-used supports for automatic leveling. Therefore, according to the support for household appliance, provided by the embodiment, a sealed mounting structure of the flexible accommodation body  600  is greatly simplified, and the sealing effect is better. 
     Further, the upper end of the sheath  200  is fixedly connected with the hydraulic plate  100  and tightly presses the opening part  601  of the flexible accommodation body  600  onto the hydraulic plate  100  for sealed connection. According to the embodiment, in accordance with the structural feature that the sheath  200  is fixedly connected with the hydraulic plate  100 , sealing between the sheath  200  and the hydraulic plate  100  is achieved by directly mounting the opening part  601  of the flexible accommodation body  600  on the sheath  200  in a sealing manner, and the sealed mounting of the flexible accommodation body  600  is achieved while the sheath  200  and the hydraulic plate  100  are fixedly connected, so that not only is the structure simplified, but also the operation is simpler and more convenient. 
     Still further, the upper end of the sheath  200  is flanged to form a mounting plane  201 , the mounting plane  201  is fit with the bottom face of the hydraulic plate  100  and is in fastened connection with the bottom face of the hydraulic plate  100  through the connecting device, and the opening part  601  of the flexible accommodation body  600  is tightly pressed to the mounting plane  201  and the bottom face of the hydraulic plate  100  for sealed connection. According to the embodiment, the mounting plane  201  is fit with the bottom face of the hydraulic plate  100 , so that not only is the overall height reduced, but also the press sealing of the opening part  601  of the flexible accommodation body  600  is facilitated. 
     Concretely, the flexible accommodation body comprises an accommodating body  602 , a chamber which is used for accommodating the liquid medium is formed inside the accommodating body  602 , an opening end of the accommodating body  602  outwards extends to form the opening part  601 ; and the accommodating body  602  is arranged in the accommodation chamber, and the opening part  601  extends into a connection of the sheath  200  and the hydraulic plate  100  and is tightly sealed. 
     Referring to  FIG. 25 , as an implementation mode of the embodiment, a hydraulic plate groove  104  is formed in the bottom face of the hydraulic plate  100 , and the opening part  601  of the flexible accommodation body  600  is deformed under pressure of the end part of the sheath  200  and fills the hydraulic plate groove  104  for sealing. According to the embodiment, sealing is achieved through pressing the opening part  601  of the flexible accommodation body  600  to deform and to enter the hydraulic plate groove  104  during the fastening of the sheath  200 , the structure is simple, and the operation is convenient. 
     Preferably, a volume enclosed by the hydraulic plate groove  104  and the end part of the sheath  200  is smaller than the volume of the opening part  601  of the flexible accommodation body  600 . Thus, the opening part  601  of the flexible accommodation body  600  is in tight contact with the hydraulic plate groove  104  to ensure sealing performance. 
     Referring to  FIG. 26 , as another implementation mode of the embodiment, a sheath projecting part  204  which bulges from the end face is arranged at the end part of one end, connected with the hydraulic plate  100 , of the sheath  200 , and the opening part  601  of the flexible accommodation body  600  is deformed under pressure of the sheath projecting part  204  and fills the hydraulic plate groove  104  for sealing. According to the embodiment, the sheath projecting part  204  extends into the hydraulic plate groove  104  when the sheath  200  is fixed to the bottom face of the hydraulic plate  100 , the sheath projecting part  204  further presses the opening part  601  of the flexible accommodation body  600  to be in close contact with the hydraulic plate groove  104 , and thus, the sealing performance is enhanced. 
     Referring to  FIG. 27 , as another embodiment of the embodiment, a sheath groove  205  is formed in the end part of one end, connected with the hydraulic plate  100 , of the sheath  200 , the sheath  200  is fastened to the bottom face of the hydraulic plate  100 , and the opening part  601  of the flexible accommodation body  600  deforms under the action of a fastening force and fills the sheath groove  205  for sealing. Thus, the bottom face of the hydraulic plate  100  is simply arranged as a planar structure, the opening part  601  of the flexible accommodation body  600  is deformed under pressure of the bottom face of the hydraulic plate  100  through fastening the sheath  200 , and thus, the opening part enters the sheath groove  205  for sealing. 
     Referring to  FIG. 28 , as another implementation mode of the embodiment, a projecting annular bulge  105  is formed on the bottom face of the hydraulic plate  100 , the sheath  200  is fixed to the bottom face of the hydraulic plate  100 , and the opening part  601  of the flexible accommodation body  600  is deformed under pressure of the annular bulge  105  and fills the sheath groove  205  for sealing. According to the embodiment, the annular bulge  105  extends into the sheath groove  205  when the sheath  200  is fixed to the bottom face of the hydraulic plate  100 , the annular bulge  105  further presses the opening part  601  of the flexible accommodation body  600  to be in close contact with the sheath groove  205 , and thus, the sealing performance is enhanced. 
     As a preferred implementation mode of the embodiment, an upper limiting stopper, which is used for preventing the regulating support  300  from excessively moving upwards to be abutted against the flexible accommodation body  600 , is arranged on the internal wall of the sheath  200 . 
     And/or, one end, sleeved by the sheath  200 , of the regulating support  300  is a smooth transition end. 
     Thus, the flexible accommodation body  600  is fastened and sealed to the hydraulic plate  100  through the sheath  200  without affecting the axial moving of the regulating support  300  in the sheath  200 . 
     According to the support for household appliance, provided by the embodiment, the sheath  200  and fixing holes of the hydraulic plate  100  are further fastened to the bottom plate  700  of the household appliance by screws or bolts, so that the hydraulic plate  100  and the sheath  200  are compacted, and sealing has extremely high reliability. 
     Embodiment VI 
     Referring to  FIG. 29  to  FIG. 35 , a support  1000  for a household appliance comprises a fixed part and a moving part, wherein a hollow chamber is formed between the fixed part and the moving part and the hollow chamber is provided with a hydraulic medium. 
     At least two household-appliance-used supports  1000  communicate with one another through high-pressure pipes  1100 ; and the hydraulic medium circulate among the household-appliance-used supports  1000  under the action of pressure to drive the moving part to extend and retract to achieve automatic leveling. 
     Liquid outlet nozzles  101  communicating with the hollow chamber are arranged on the fixed part, the high-pressure pipes  1100  are in sealed connection with the liquid outlet nozzles  101  through snap-in connecting members  900 , and the snap-in connecting members  900  have reinforcing aprons  902  which are fit with the fixed part. 
     At least two household-appliance-used supports  1000 , provided by the embodiment, are respectively connected with the high-pressure pipes  1100  to achieve the communicating of the household-appliance-used supports  1000 , and thus, the hydraulic medium can circulate between two household-appliance-used supports to achieve automatic leveling. 
     Connection between the high-pressure pipes  1100  and the household-appliance-used supports  1000  is sealed through fastening connection of the snap-in connecting members  900 , and thus, no liquid leakage is ensured. However, sloshing or impact of the high-pressure pipes  1100  is inevitable during the processes of production assembling, packaging, batch-production transportation, mounting and so on, the snap-in connecting members  900  have the reinforcing aprons  902  which are fit with the fixed part, and thus, the strength and compactness of the connection between the high-pressure pipes  1100  and the household-appliance-used supports  1000  are improved. 
     Concretely, the high-pressure pipes  1100  sleeve on the liquid outlet nozzles  101 , the snap-in connecting member  900  comprises a snap-in connecting part  901 , the snap-in connecting part  901  sleeves on the high-pressure pipe  1100  to press the high-pressure pipe  1100  to be in sealed connection with the liquid outlet nozzle  101 . 
     According to the embodiment, the reinforcing apron  902  is fixed to one side of the external wall of the snap-in connecting part  901 , and one end of the reinforcing apron  902  is contact with the fixed part. 
     According to the embodiment, the snap-in connecting member  900  has the reinforcing apron  902 , the reinforcing apron  902  can form a fitting face with the fixed part of the hydraulic plate  100 , thus, great forces in X, Y and Z directions can be applied to the liquid outlet nozzles  101 , and the liquid outlet nozzles  101  are prevented from bending under the action of the forces due to the fitting face of the reinforcing aprons  902  with the hydraulic plate  100 . 
     Further, in the present embodiment, one end, close to the fixed part, of the reinforcing apron  902  bulges to the fixed part from one end, close to the fixed part, of the snap-in connecting part  901 . Or one end, close to the fixed part, of the reinforcing apron is a same level with one end, close to the fixed part, of the snap-in connecting part  901 . Thus, the reinforcing apron  902  is used for counteracting force acting on the liquid outlet nozzles  101  during the accident sloshing of the high-pressure pipes  1100  to prevent the liquid outlet nozzles from breaking. 
     Concretely, the snap-in connecting part  901  is a snap-in connecting sleeve; and 
     the reinforcing apron  902  is a block which is fixed to one side of the snap-in connecting sleeve or fixed to a whole circumferential wall of the snap-in connecting sleeve. 
     As a preferred implementation mode of the embodiment, each liquid outlet nozzle  101  of the at least two liquid outlet nozzles  101  is connected with one high-pressure pipe  1100 , and all the high-pressure pipes  1100  and the liquid outlet nozzles  101  are hermetically connected through the same snap-in connecting member  1200 . 
     Preferably, the snap-in connecting member  1200  comprises a plurality of snap-in connecting parts  901 , each snap-in connecting part is in snap-in connection with one high-pressure pipe correspondingly, and the reinforcing apron  902  is fixedly connected with all the snap-in connecting parts  901 . 
     As a preferred implementation mode of the embodiment, the fixed part comprises a hydraulic plate  100  and a sheath  200  fixedly connected with the hydraulic plate  100 , and the moving part is a regulating support  300  which is arranged in the sheath  200  and is axially movable relative to the sheath  200 ; and the liquid outlet nozzles  101  are arranged on the hydraulic plate  100 , and the reinforcing apron  902  of the snap-in connecting member  900  is in contact with the sidewall of one side, where the liquid outlet nozzles are arranged, of the hydraulic plate  100 . 
     Concretely, the projecting base part  109  is further formed on the bottom face of the hydraulic plate  100 , and the liquid outlet nozzles  101  are arranged on the base part  109 ; and the reinforcing apron  902  of the snap-in connecting member  900  is in contact with the base part  109 . 
     Further, the reinforcing apron of the snap-in connecting member is fixed to the fixed part. 
     Preferably, a first fixing hole  903  is formed in the reinforcing apron  902 , a second fixing hole is formed in the fixed part, and the reinforcing apron  902  and the fixed part are fixedly connected by enabling screws through the first fixing hole  903  and the second fixing hole. 
     Further, the liquid outlet nozzles  101  of the two household-appliance-used supports  1000  are connected to the same communicating member  1200  through the high-pressure pipes  1100  to achieve communicating between the two household-appliance-used supports  1000 . 
     The communicating member  1200  is provided with communicating member liquid outlet nozzles  1201  which are used for being connected with the high-pressure pipes  1100 , the high-pressure pipes  1100  and the communicating member liquid outlet nozzles  1201  are hermetically connected through the snap-in connecting members  900 , and the reinforcing apron  902  of the snap-in connecting member  900  is in contact with the communicating member  1200 . 
     Preferably, the reinforcing apron  902  of the snap-in connecting member  900  is in contact with the communicating member  1200  and is fixedly connected with the communicating member  1200 . Preferably, a third fixing hole  1203  is formed in the communicating member  1200 , and the reinforcing apron  902  and the communicating member  1200  are fixedly connected by enabling screws through the first fixing hole  903  and the third fixing hole  1203 . 
     Concretely, the support for household appliance  1000 , provided by the embodiment, comprises two liquid outlet nozzles  101 , the communicating member  1200  comprises four communicating member liquid outlet nozzles  1201  which communicate with each other pairwise; two communicating member liquid outlet nozzles  1201  which communicate with each other respectively communicate with the liquid outlet nozzles  101  of the two household-appliance-used supports through the high-pressure pipes  1100 . 
     According to the embodiment, the communicating member  1200  comprises a main cavity  1202 , two communicating member liquid outlet nozzles  1201  are respectively arranged at the two ends of the main cavity  1202 , and the interior of the main cavity  1202  has two flow passages  1205  which communicate with the four communicating member liquid outlet nozzles  1201  at the two ends of the main cavity pairwise. 
     According to the embodiment, oil charging holes  1204  and vent holes are respectively formed in the main cavity  1202  corresponding to the two flow passages  1205 , and sealing members are mounted on the oil charging holes  1204  and the vent holes. 
     According to the embodiment, the two communicating household-appliance-used supports  1000  have regulating supports  300 ; and when the household appliance is provided with the household-appliance-used supports, provided by the embodiment, different household-appliance-used supports  1000  are different in horizontal height due to an out-of-flat ground surface, the regulating supports  300  can stretch and contract like a piston to achieve the same internal hydraulic pressure, and thus, the automatic regulating of the household-appliance-used supports  1000  is completed. 
     Embodiment VII 
     The support for household appliance, provided by the embodiment, comprises
         a hydraulic plate  100 , which is internally provided with a liquid flow passage  107 ;   a sheath  200 , which is fixedly connected with the hydraulic plate  100 ;   a regulating support  300 , which is arranged in the sheath  200  and is axially movable relative to the sheath  200 ;   an accommodation chamber, which is formed by the hydraulic plate  100 , the sheath  200  and the regulating support  300 ;   and a flexible accommodation body  600 , which accommodates a liquid medium and is arranged in the accommodation chamber;   and the flexible accommodation body  600  extends and retracts to drive the regulating support  300  to axially move in the sheath  200  for leveling under the action of pressure.       

     The support for household appliance further comprises a rubber gasket  400  which is fixed to the bottom of the regulating support  300 , the bottom of the rubber gasket  400  has designed patterns  401 , thus, the friction force to the ground is increased, and the stability is enhanced. 
     Embodiment VIII 
     The embodiment also provides a household appliance with the support for household appliance, provided by any one of the above-mentioned embodiments. The household appliance comprises a casing, wherein a plurality of household-appliance-used supports are mounted at the bottom of the casing, and a hydraulic medium being provided in the household-appliance-used supports  1000  circulates among the household-appliance-used supports for leveling. 
     According to the embodiment of the present disclosure, taking a washing machine for example, a principle and a method for automatic leveling of the washing machine by using the support for household appliance, provided by the present disclosure, are elaborated. After the washing machine is mounted, different household-appliance-used supports are different in horizontal height due to an out-of-flat ground surface, and the household-appliance-used supports located at pits of the ground surface are low in position. Thus, the household-appliance-used supports at high positions firstly bear the weight of the washing machine and bear a large gravity force, and the household-appliance-used supports at low positions bear a small gravity force due to failure support. 
     Regulating supports of the household-appliance-used supports at high positions move up under high pressure, heights of the entire supports are reduced, thus, volumes of hollow chambers of flexible accommodation bodies full of the hydraulic medium are compressed and reduced, the hydraulic medium is forced to enter throttling holes or valve holes and enter the household-appliance-used supports at low positions through high-pressure pipes, thus, the hydraulic medium in flexible accommodation bodies of the household-appliance-used supports at low positions becomes more and more, and the flexible accommodation bodies are expanded to promote the stretching of the regulating supports. 
     When the supports at high positions and the supports at low positions are the same in hydraulic pressure, the hydraulic medium does not flow in the high-pressure pipes any more, relative positions of the regulating supports and a bottom plate of the washing machine do not change any more, and the automatic regulating of the washing machine is completed. 
     During the washing or spin-drying of the washing machine, the hydraulic medium can also slowly flow for self-leveling, so that vibration noises of the washing machine are greatly lowered. 
     In addition, the support for household appliance, provided by each of the above-mentioned embodiments of the present disclosure, can also be applied to household appliances such as electric refrigerators, coolers and air-conditioner indoor units, besides washing machines. 
     It is necessary to note that each of the above-mentioned embodiments of the present disclosure can be implemented independently and can also be implemented by combining a plurality of embodiments. 
     The above-mentioned embodiments are only preferred embodiments of the present disclosure, but not intended to limit the present disclosure in any form. Although the present disclosure has been described in terms of preferred embodiments, it is not intended to be limited to these disclosed embodiments. Equivalent embodiments, of which some changes or modifications are equivalent changes, may be made by any skilled in the art by using the above-mentioned technical contents without departing from the technical scheme scope of the present disclosure. However, all simple amendments, equivalent changes and modifications made to the above embodiments according to the technical essence of the present disclosure without departing from the technical scheme scope of the present disclosure all still fall within the protection scope of the present disclosure.