Adjustable footing assembly and household appliance with same

Abstract

The utility model provides an adjustable footing assembly and a household appliance with the same. The adjustable bottom foot assembly comprises a bearing plate and a bottom foot combination arranged on the bearing plate. The bearing plate is provided with bottom foot bearing parts located on the two sides and arranged at intervals, and a connecting part connected between the two bottom foot bearing parts. The bottom foot combination is provided with hydraulic bottom feet fixed to the two bottom foot bearing parts respectively and a hydraulic pipe connected between the hydraulic bottom feet, and the hydraulic pipe is located on the connecting part. Wherein the footing bearing part is provided with a first positioning structure used for positioning the hydraulic footing, and the connecting part is provided with a second positioning structure used for positioning a hydraulic pipe.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to an adjustable foot assembly for household appliances and a household appliance having the assembly. Background Technology

[0002] As people's living standards improve, home appliances are required to not only be functional but also aesthetically pleasing and compatible with furniture. Consequently, built-in home appliances are increasingly being used and are gradually becoming the industry mainstream. Ensuring that home appliances are level and aesthetically pleasing with the cabinet after installation requires consideration of multiple factors, such as floor flatness and cabinet tilt. Traditional installation methods cannot achieve leveling in one go after the appliance is pushed into the cabinet, and due to space limitations, the adjustment casters need to be pulled out repeatedly. While some systems use hydraulic automatic adjustment, this mechanism connects to height-adjustable feet via pipes. However, during production line transport, these pipes are prone to deformation, affecting the overall installation. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable foot assembly and a household appliance having the assembly. By setting a foot bearing part and a connecting part on the bearing plate, the hydraulic foot and hydraulic pipeline are organically combined into an overall structure of the adjustable foot assembly, and the integrated installation and rapid leveling of the assembly are achieved through a multi-level positioning structure.

[0004] To achieve the above objectives, this utility model provides an adjustable foot assembly, comprising: a support plate having foot support portions located on both sides and spaced apart, and a connecting portion connecting the two foot support portions; a foot assembly having hydraulic feet respectively fixed to the two foot support portions, and a hydraulic pipe connecting the hydraulic feet, wherein the hydraulic pipe is positioned at the connecting portion; wherein, the foot support portions are provided with a first positioning structure for positioning the hydraulic feet, and the connecting portion is provided with a second positioning structure for positioning the hydraulic pipe.

[0005] In one embodiment of this utility model, the first positioning structure is a positioning protrusion protruding from the base bearing portion, the hydraulic base has a hydraulic base and a support foot that cooperates with the hydraulic base, the hydraulic base is provided with a positioning hole that cooperates with the positioning protrusion for positioning, and the second positioning structure is a pipe clamp fixed to the connecting portion.

[0006] In one embodiment of this utility model, the hydraulic base includes a base, a cylindrical body slidably mounted on the base along the axial direction and forming a receiving cavity with the base, and at least two oil bladders arranged in the receiving cavity along the extension direction of the base. The base is provided with an oil supply channel connecting the hydraulic pipe, the oil supply channel including a main channel and a branch channel connecting the main channel and each of the oil bladders; the support foot includes a fixed seat with a rotating shaft, casters and an adjusting part disposed at both ends of the fixed seat, the casters and the adjusting part being located on both sides of the rotating shaft; the adjusting part is supported on the cylindrical body.

[0007] In one embodiment of this utility model, the base has a base plate and a sleeve extending axially from the base plate along the cylinder body. The cylinder body is slidably fitted inside the sleeve. The cylinder body includes a first cylindrical portion corresponding to each of the oil bladders and a first contracting portion located between two adjacent first cylindrical portions. The size of the first contracting portion perpendicular to the oil bladder arrangement direction is less than or equal to the diameter of the first cylindrical portion. The sleeve includes a second cylindrical portion corresponding to each of the first cylindrical portions and a second contracting portion located between two adjacent second cylindrical portions. The first contracting portion is located inside the second contracting portion.

[0008] As one embodiment of the present invention, the foot assembly further includes a fluid replenisher disposed on the hydraulic pipeline, and a third positioning structure is provided between the fluid replenisher and the connecting part for mutual positioning.

[0009] In one embodiment of this utility model, the bearing plate is U-shaped, the bottom bearing portion is symmetrically arranged on both sides of the bearing plate, and the bottom bearing portion and the connecting portion are arranged in a stepped manner on different planes.

[0010] In one embodiment of this utility model, the support plate is designed in a split manner and includes a first support plate located on both sides and a connecting plate connected between the first support plates. The first support plates are symmetrically arranged on both sides of the connecting plate. The bottom support portion is disposed on the first support plate, and the connecting portion is partially disposed on the first support plate and partially disposed on the connecting plate.

[0011] In one embodiment of this utility model, the first bearing plate is L-shaped and includes a first plate with a base bearing portion and a second plate connecting the first plate. The second plate is fixedly connected to the connecting plate, and the connecting plate is generally straight.

[0012] In one embodiment of this utility model, the second plate has a mating edge that is opposite to the connecting plate and a mating portion formed by bending perpendicularly from the mating edge; the connecting plate has a mating edge that matches the mating edge and a mating portion formed by bending perpendicularly from the mating edge. The mating portion and the mating portion are fixedly connected by a connecting structure. In the width direction of the second plate and the connecting plate, the width of the connecting portion and the mating portion is smaller than the width of the second plate and the connecting plate, so as to form a connecting portion for hydraulic pipes to pass through at the positions of adjacent mating portions and mating portions.

[0013] As one embodiment of the present invention, the connecting structure includes a positioning groove disposed on one of the docking part and the mating part, and a positioning card disposed on the other, so as to achieve pre-positioning through the positioning groove and the positioning card. The connecting structure also includes fixing holes disposed on the docking part and the mating part respectively, and fasteners that cooperate with the fixing holes.

[0014] As one embodiment of this utility model, a pull-out mechanism is provided between the second plate and the connecting plate so that the width of the bearing plate is adjustable as a whole. The pull-out mechanism includes a track formed on one of the first plate and the connecting plate and a slide rail on the other, as well as a plurality of positioning structures for positioning the slide rail and the track in a coordinated position.

[0015] In one embodiment of this utility model, the bearing plate has a bearing surface, the base assembly is fixed to the bearing surface, and a surrounding wall extends from the bearing surface around the bearing plate to encircle the bearing surface.

[0016] This utility model also provides a household appliance, which has a base plate and the adjustable foot assembly. The base plate has a through hole running vertically through it. The adjustable foot assembly is fixed to the base plate by a support plate and is located on the side of the base plate away from the ground. The hydraulic foot protrudes through the through hole to the bottom of the base plate.

[0017] Compared with existing technologies, this utility model, through the aforementioned structure, allows the hydraulic feet and hydraulic pipes to be uniformly supported by a bearing plate, ensuring the structural stability and reliability of each component during transport. During assembly, it can be assembled simultaneously with other parts of the household appliance, eliminating the need for multiple disassemblies and individual fixings when installing it onto the main structure, thus improving assembly efficiency. Furthermore, when applied to household appliances as a whole, this structure reduces the need for repeated pulling and adjusting of the appliance due to uneven ground or tilted cabinets, enabling rapid leveling via hydraulic adjustment after a single push-in. Moreover, the adjustable foot assembly in this utility model exhibits high modularity and versatility in the supply chain and installation process, which helps reduce production costs and maintenance difficulty, and meets the adaptation needs of various sizes and types of household appliances. Attached Figure Description

[0018] Figure 1 This is a perspective view of a household appliance according to one embodiment of the present utility model;

[0019] Figure 2 for Figure 1 Bottom view of the base plate and adjustable feet assembly of the household appliance shown;

[0020] Figure 3 for Figure 1 Top view of the base plate and adjustable feet assembly of the household appliance shown;

[0021] Figure 4 This is a perspective view of the adjustable foot assembly in one embodiment of the present invention.

[0022] Figure 5 for Figure 4 Top view of the adjustable foot assembly shown;

[0023] Figure 6 for Figure 4 An exploded perspective view of the adjustable foot assembly shown.

[0024] Figure 7 This is a perspective view of another embodiment of the support plate of the adjustable foot assembly in this utility model;

[0025] Figure 8 for Figure 4 A perspective view of the hydraulic base of the adjustable foot assembly shown;

[0026] Figure 9 for Figure 8 An exploded perspective view of the hydraulic base shown.

[0027] Figure 10 for Figure 8 The diagram shows a cross-sectional view of the hydraulic base. Detailed Implementation

[0028] The following detailed description incorporates the accompanying drawings, which form part of this specification. The illustrative embodiments mentioned in the specification and drawings are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art will understand, based on the teachings of this application, that many other embodiments can be employed and various changes can be made to the described embodiments without departing from the spirit and scope of this utility model. It should be understood that the various aspects of this application illustrated herein can be arranged, substituted, combined, separated, and designed in many different configurations, all of which are within the scope of this application.

[0029] Please see Figures 1 to 9As shown, this utility model provides an adjustable foot assembly 100 and a household appliance 600 equipped with the adjustable foot assembly. The adjustable foot assembly 100 includes a support plate 1 and a foot assembly 2.

[0030] like Figures 4 to 6 As shown, the support plate 1 has foot support portions 11 located on both sides and spaced apart, and a connecting portion 12 connecting the two foot support portions 11. The foot assembly 2 has hydraulic feet 21 respectively fixed to the two foot support portions 11, and a hydraulic pipe 22 connected between the hydraulic feet 21, the hydraulic pipe 22 being positioned at the connecting portion 12; wherein, the foot support portion 11 is provided with a first positioning structure 111 for positioning the hydraulic feet 21, and the connecting portion 12 is provided with a second positioning structure 121 for positioning the hydraulic pipe 22.

[0031] In this embodiment, the hydraulic feet 21 and hydraulic pipes 22 can be uniformly supported by the bearing plate 1 through the above-described structure, ensuring the structural stability and reliability of each component during the transfer of parts and preventing displacement during transportation. In particular, it ensures the stable arrangement of the hydraulic pipes 22 within the assembly, preventing hydraulic oil leakage and pipe twisting during installation. During the assembly process, it can be assembled simultaneously with other parts of the household appliance, thus eliminating the need for multiple disassemblies and individual fixings when installing it with the main structure of the household appliance, improving assembly efficiency. Furthermore, when this structure is applied to the household appliance 600 as a whole, it can reduce the need for repeated pulling out and adjusting of the household appliance due to uneven ground or cabinet tilt, allowing the household appliance (such as a refrigerator) to be quickly leveled by hydraulic adjustment after being pushed in once. The adjustable foot assembly 100 of this embodiment exhibits highly modular and universal characteristics in the supply chain and installation process, which helps to reduce production costs and maintenance difficulty, and meets the adaptation needs of various sizes and types of household appliances.

[0032] The first positioning structure 111 is a positioning protrusion protruding from the foot support portion 11. The hydraulic foot 21 has a hydraulic base 23 and a support foot 24 that cooperates with the hydraulic base 23. The hydraulic base 23 is provided with a positioning hole 230 that cooperates with the positioning protrusion for positioning. The positioning hole 230 can be directly inserted into the positioning protrusion to achieve relative positioning between the two. Alternatively, a threaded hole can be provided on the positioning protrusion, and fasteners such as screws can be used to cooperate with the threaded hole and positioning hole of the positioning protrusion to achieve a fixed connection between the two, thereby fixing the hydraulic foot to a predetermined position on the foot support portion.

[0033] The second positioning structure 121 is a pipe clamp fixed to the connecting part 12. The pipe clamps are arranged in two rows on the connecting part to fix the inlet and outlet pipes of the hydraulic pipe respectively. In addition, multiple pipe clamps are arranged at intervals along the length of the connecting part 12 to fix the hydraulic pipe at multiple positions along the length of the hydraulic pipe, so as to ensure the stability of the hydraulic pipe on the support plate 1.

[0034] In one embodiment, the foot assembly 2 further includes a fluid replenisher 25 disposed on the hydraulic pipe 22, and a third positioning structure 122 is provided between the fluid replenisher 25 and the connecting part 12 for mutual positioning. In this embodiment, by adding a fluid replenisher 25 to the hydraulic pipe, oil replenishment and pressure balance can be achieved during foot adjustment, thereby ensuring system stability and sustainable adjustment capability even after multiple leveling or long-term use.

[0035] The third positioning structure 122 between the replenisher 25 and the connecting part 12 can be pre-positioned and finally fixed in a manner similar to the aforementioned first and second positioning structures. For example, positioning protrusions, positioning grooves, or snap-fit ​​structures corresponding to the outer wall structure of the replenisher 25 can be provided on the connecting part 12 to maintain a stable spatial position of the replenisher 25 within the overall structure of the support plate 1, preventing the replenisher 25 from shifting or loosening due to vibration during transportation or assembly. Through this third positioning structure 122, the replenisher 25 can be securely installed without affecting the hydraulic pipeline layout, thereby achieving convenient modular docking during component turnover and transportation and installation at the bottom of household appliances (such as refrigerators), and improving the leveling accuracy and maintenance convenience of the system in the final use state. This solution further improves the overall functional structure of the adjustable foot assembly, providing a solid guarantee for the one-time leveling and long-term stable operation of the hydraulic feet, thereby improving the user experience and reliability of the entire machine.

[0036] Please see Figures 4 to 6 In one embodiment, the support plate 1 is U-shaped, and the base support portions 11 are symmetrically arranged on both sides of the support plate 1. The base support portions 11 and the connecting portion 12 are arranged in a stepped manner on different planes. In this structure, by designing the support plate 1 as U-shaped and symmetrically distributing the base support portions 11 on both sides, it is not only beneficial to the stable layout of the base assembly in the bottom space of the household appliance, but also helps to balance the load.

[0037] The stepped planar arrangement differentiates the height of the base support 11 and the connecting part 12. This balances the height difference between the hydraulic pipe 22 and the bottom surface of the hydraulic base 21, ensuring effective support for both. Furthermore, it provides a more rational spatial arrangement for components such as the hydraulic base 21, hydraulic pipe 22, and fluid replenisher 25, maximizing space utilization within limited height and width constraints and achieving an orderly arrangement of these components. In practical installation, this design improves the convenience and accuracy of modular assembly, reduces modifications to the electrical bottom structure, and adapts to different terrains and size requirements, further enhancing the versatility and assembly flexibility of the adjustable base assembly.

[0038] The support plate 1 can be a single piece or a separate design. When it is a separate design, such as... Figure 6 As shown, the assembly can be configured to include a first support plate 13 located on both sides and a connecting plate 14 connected between the first support plates 13. The split design reduces the size of a single molding die for the support plate 1 and facilitates packaging and transportation of the support plate 1. Furthermore, the length of the connecting plate 14 can be designed according to the application requirements of the foot, making the adjustable foot assembly 100 suitable for household appliances of different sizes. This is particularly beneficial in actual installation and maintenance, allowing for quick replacement of the connecting plate on-site to adapt to specific appliance size requirements, thus achieving a more efficient and compatible assembly experience and significantly improving the universality and economy of the foot assembly in practical applications. Moreover, this detachable and replaceable structure facilitates flexible configuration of the foot assembly in the supply chain and after-sales process, reducing individual adaptation adjustments for different appliance models and lowering cost and inventory pressure.

[0039] The first bearing plate 13 is symmetrically arranged on both sides of the connecting plate 14, so that the first bearing plates 13 on both sides can be formed by a set of molds and can be uniformly packaged and transported, reducing costs.

[0040] Specifically, the foot support portion 11 is disposed on the first support plate 13, and the connecting portion 12 is partially disposed on the first support plate 13 and partially disposed on the connecting plate 14. In one embodiment, the first support plate 13 is L-shaped and includes a first plate 131 with the foot support portion 11 and a second plate 132 connecting the first plate 131. The second plate 132 is fixedly connected to the connecting plate 14, which is generally straight. In this structure, the first support plate 13 meets the dual requirements of load-bearing and connection through its L-shaped design, allowing the foot support portion 11 and the connecting portion 12 to be flexibly distributed in different planes and directions, thereby providing a higher degree of adaptability for the modular layout of the hydraulic foot 21, the fluid replenisher 25, and the hydraulic pipe 22 within a limited space.

[0041] The first plate 131 provides the base support 11 to ensure the stable positioning of the hydraulic foot 21 and prevent it from shifting during installation and transportation. The second plate 132 connects to the connecting plate 14, enabling the assembly of the entire foot assembly. The connecting plate 14 is arranged in a straight line, further simplifying the assembly process with the first support plate 13 and making the overall configuration of the support plate more intuitive and easier to adjust. In practical applications, based on the cooperation between the L-shaped first support plate 13 and the connecting plate 14, suitable support and leveling platforms can be quickly built under household appliances of different widths and heights to adapt to various sizes and specifications. Furthermore, customized matching can be achieved by simply replacing or adjusting the connecting plate 14 according to on-site needs. This design improves assembly flexibility and space utilization, thereby reducing production and maintenance costs and meeting diverse market and user needs.

[0042] In one embodiment of this utility model, the second plate 132 has a mating edge 1321 that aligns with the connecting plate 14, and a mating portion 1322 formed by bending perpendicularly from the mating edge 1321. The connecting plate 14 has a mating edge 141 that matches the mating edge 1321, and a mating portion 142 formed by bending perpendicularly from the mating edge 141. The mating portion 1322 and the mating portion 142 are fixedly connected by a connecting structure. Through the above structural design, the second plate 132 can achieve a precise and stable connection at the mating position with the connecting plate 14, making the installation and maintenance of the split-type component of the support plate more convenient.

[0043] Wherein, without affecting the connection structure between the second plate 132 and the connecting plate 14, in the width direction of the second plate 132 and the connecting plate 14, the width of the mating portion 1322 and the fitting portion 142 is set to be smaller than the width of the second plate 132 and the connecting plate 14, so as to form a connecting portion 140 for the hydraulic pipe 22 to pass through at the position of adjacent mating portions 1322 and fitting portions 142.

[0044] In this embodiment, both the second plate 132 and the connecting plate 14 have protruding structures extending outward from their main structure side. The mating part 1322 and the fitting part 142 are both formed by bending from the protruding structures, thereby making the main structure of the second plate 132 and the connecting plate 14 have a planar connected design, which facilitates the passage of the hydraulic pipe 22.

[0045] Of course, as another embodiment of this utility model, such as Figure 7 As shown, the docking part 1322′ and the mating part 142′ can also be set to have the same width as the second plate 132′ and the connecting plate 14′. In this case, a through hole 140′ for the hydraulic pipe to pass through can be provided on the docking part 1322′ and the mating part 142′.

[0046] During implementation, the docking part 1322 and the mating part 142 are pre-positioned and fixed through a connection structure. This connection structure may include a positioning groove 1323 on one of the docking part 1322 or the mating part 142 and a positioning card 143 on the other to achieve pre-positioning of the components. This provides accurate guidance when the docking part and the mating part are initially joined, eliminating the need for repeated alignment during on-site installation. The connection structure also includes fixing holes corresponding to the docking part and the mating part, and fasteners that mate with the fixing holes. After the relative positions are determined through the pre-positioning of the positioning groove and the positioning card, the two parts are then fixedly connected through the fixing holes and fasteners, ensuring that they are connected as a whole with high rigidity. This ensures that the entire support plate has sufficient strength and rigidity. This assembly method eliminates the need for tedious alignment and measurement operations during on-site installation, and allows for a firm assembly of the first support plate 13 and the connecting plate 14 on both sides of the support plate in a short time.

[0047] In one specific embodiment, the positioning groove 1323 is disposed through the docking part 1322, the positioning card 143 is torn and formed on the mating part 142, and the extending direction of the positioning card 143 is towards the main structure of the connecting plate 14, so that the connecting plate 14 can be directly hung and positioned on the first bearing plate 13 through the positioning card 143, making positioning simple and convenient.

[0048] In implementation, the cooperation between the positioning slot 1323 and the positioning card 143 can significantly reduce component misalignment and time waste in the early stages of assembly, while the fixing holes and fasteners ensure a final rigid connection to meet high load-bearing requirements. This connection method facilitates quick installation and disassembly. When replacing, maintaining, or adjusting components, the split-type load-bearing plate structure can be easily reconfigured by loosening the fasteners. The entire connection process is clear, simple, and reliable, helping to reduce the operational difficulty and cost for installers, and ensuring that the load-bearing plate maintains stable structural performance throughout its service life. This makes the adjustable foot assembly highly adaptable, precise, and reliable in assembling and maintaining different household appliance specifications and under different site conditions.

[0049] In addition, in one embodiment, a pull-out mechanism (as shown in the figure) can be provided between the second plate 132 and the connecting plate 14 to make the overall width of the support plate 1 adjustable. The pull-out mechanism includes a track formed on one of the first plate and the connecting plate, a slide rail on the other, and multiple positioning structures for positioning the slide rail and the track in a mating position. By adding a track and slide rail structure between the first plate and the connecting plate, the overall width of the support plate can be flexibly adjusted according to actual needs during on-site installation. During installation, the slide rail moves along the track, and precise positioning is achieved through multiple positioning structures (such as locking protrusions, positioning holes, or positioning pins that can be provided on the track or slide rail). After the support plate is assembled, the width of the support plate can be quickly adjusted to fit the bottom of a household appliance of a specific size using the pull-out mechanism, thus meeting the needs of different models or different installation environments without replacing the connecting plate.

[0050] During implementation, the modular design of the support plate allows for flexible assembly of the foot support and connecting plate. The addition of a pull-out mechanism further enhances the versatility and ease of assembly of the components. It also allows the adjustable foot components to be appropriately scaled down or adjusted in size during transportation and storage, resulting in cost savings in packaging and logistics. The positioning structure ensures a stable connection between components even after pulling out, and the support plate maintains sufficient rigidity and support throughout its service life. This solution ensures the reliability of the foot components while making installation and maintenance more efficient, meeting diverse market demands and installation conditions, and improving the adaptability and user experience of home appliances.

[0051] In the above embodiments, the support plate 1 can be generally configured as a flat plate. As another embodiment of this utility model, such as... Figure 7As shown, the support plate 1' has a support surface 10', and the base assembly is fixed to the support surface 10'. A surrounding wall 101' extends from the support surface 10' around the periphery of the support plate 1', enclosing the support surface 10'. This arrangement allows the hydraulic structures in the base assembly, such as hydraulic pipes and hydraulic bases, to be enclosed within the surrounding wall 101', preventing hydraulic oil from leaking to the outside of the refrigeration equipment in the event of oil leakage.

[0052] In addition, such as Figures 7 to 9 As shown, in one embodiment of this utility model, the hydraulic base 23 includes a base 231, a cylindrical body 232 slidably mounted on the base 231 along the axial direction and forming a receiving cavity 233 with the base 231, and at least two oil bladders 234 arranged in the receiving cavity 233 along the extension direction of the base 231. The base 231 is provided with an oil delivery channel 230 connecting the hydraulic pipe 22. The oil delivery channel 230 includes a main channel 2301 and a branch channel 2302 connecting the main channel to each of the oil bladders 234. Figure 6 As shown, the support foot 24 includes a fixed base 241 with a rotating shaft 2411, casters 242 and an adjustment part 243 disposed at both ends of the fixed base 241, the casters 242 and the adjustment part 243 being located on both sides of the rotating shaft 2411; the adjustment part 243 is supported on the cylinder 232.

[0053] In this structure, by forming a receiving cavity 233 between the base 231 and the cylinder 232 and arranging at least two oil bladders 234, the hydraulic medium can be distributed within the multiple oil bladders 234, thereby improving the support stability and adjustment accuracy. The oil delivery channel 230 is connected through the main channel 2301 and the branch channels 2302 corresponding to the oil bladders 234, realizing the orderly delivery of the hydraulic medium among the multiple oil bladders 234, meeting the requirements for precise height adjustment in complex installation scenarios. The oil bladders 234 are arranged along the extension direction of the base 231, which on the one hand allows for efficient arrangement of the hydraulic base module in a limited space, and on the other hand, the layout of multiple oil bladders 234 can realize adaptive compensation for uneven ground and cabinet tilt, while multiple air bladders provide rapid response and improve adjustment efficiency. The rotating shaft 2411 on the fixed base 241 arranges the caster 242 and the adjustment part 243 in a seesaw distribution with a long lever arm, which can improve the adjustment efficiency of the caster 242, reduce the required adjustment energy consumption, and achieve rapid leveling.

[0054] With the aforementioned configuration of multiple oil bladders 234 and the design of the oil delivery channel 230, when hydraulic medium is injected into the oil bladders 234, the cylinder 232 slides axially within the base 231, driving the adjusting part 243 and casters 242 to achieve height changes. This allows for quick leveling without repeatedly pushing or pulling electrical components. This structure improves installation efficiency and accuracy, enhances load-bearing and support stability, and is adaptable to household appliances of different sizes or for various applications. Simultaneously, it reduces assembly and maintenance costs, and improves the overall user experience and versatility of the machine.

[0055] In one embodiment of the present invention, the base 231 has a base plate 2311 and a sleeve 2312 extending axially from the base plate 2311 along the cylinder 232, and the cylinder 232 is slidably sleeved in the sleeve 2312.

[0056] The cylinder 232 includes a first cylindrical portion 2321 corresponding to each of the oil bladders 234 and a first constriction portion 2322 located between two adjacent first cylindrical portions 2321. The size of the first constriction portion 2322 along the direction perpendicular to the arrangement of the oil bladders 234 is less than or equal to the diameter of the first cylindrical portion 2321.

[0057] The sleeve 2312 includes second cylindrical portions 2313 corresponding to the first cylindrical portions 2321, and second constriction portions 2314 located between two adjacent second cylindrical portions 2313, with the first constriction portion 2322 located within the second constriction portion 2314. Furthermore, a partition plate 2326 is provided on the inner side of the cylinder 232 at a position corresponding to the first constriction portion 2322 to separate the receiving cavities of different oil bladders 234.

[0058] In this structure, the sleeve 2312 on the base plate 2311 forms an inner-outer sleeve relationship with the cylinder 232. The cylinder 232 can slide axially within the sleeve 2312, thereby extending the cylinder 232 when the oil bladder 234 expands under the action of hydraulic medium, to raise or lower the height of the caster 242 corresponding to the support foot. Through the one-to-one correspondence between the first cylindrical portion 2321 and the second cylindrical portion 2313, and the contraction structure between adjacent cylindrical portions, precise guidance between the cylinder 232 and the sleeve 2312 is achieved. The first contraction portion 2322 is located within the second contraction portion 2314, effectively limiting and guiding the cylinder 232 during axial sliding, preventing rotation or misalignment of the cylinder 232 during adjustment. Since the size of the first contraction section 2322 is less than or equal to the diameter of the first cylindrical section 2321, the cylinder 232 presents a compact layout similar to an "8" shape or multiple cylinders arranged side by side, which can efficiently accommodate multiple oil sacs 234 in a limited space. Through the precise matching of the structure of the second cylindrical section 2313 corresponding to the sleeve 2312 and the second contraction section 2314, the cylinder 232 can be raised and lowered smoothly.

[0059] This matching design ensures that the cylinder 232 and sleeve 2312 maintain a stable guiding relationship even under varying forces. When the oil supply channel 230 supplies hydraulic medium to multiple oil bladders 234, the expansion of the oil bladders 234 pushes the cylinder 232 up and down axially along the sleeve 2312, achieving automatic adjustment of the foot height and maintaining precise positioning. This structure not only improves the leveling accuracy and stability of the adjustable foot assembly 100 but also reduces the overall volume of the assembly, enhancing structural compactness. It facilitates flexible installation and adaptation within the bottom space of household appliances of different sizes and shapes, improving assembly and maintenance convenience and versatility for various applications.

[0060] A limiting structure for restricting the extension and retraction height of the cylinder 232 is also provided between the second contraction portion 2314 of the sleeve 2312 and the first contraction portion 2322 of the cylinder 232. The limiting structure may be a protrusion 2315 protruding inside the second contraction portion 2314 and a stop surface 2323 provided on the first contraction portion 2322.

[0061] The oil bladder 234 and the base plate 2311 are preferably interlocked, which facilitates the installation of the oil bladder 234 and improves the sealing performance of the oil bladder 234 and the base plate 2311. Specifically, the base 2311 also includes an interlocking portion 2316 provided on the base plate 2311, and the oil bladder 234 includes a mating portion 2341 that mates with the interlocking portion 2316. The interlocking portion 2316 extends axially along the cylinder 232.

[0062] To further improve the sealing performance between the oil bladder 234 and the substrate 2311, the oil bladder 234 also includes a sealing portion 2342 extending radially from the docking portion 2341 along the cylinder 232. The sealing portion 2342 is attached to the substrate 2311. The substrate 2311 is also provided with a limiting ring 2317. The limiting ring 2317 is located outside the insertion portion 2316 and is spaced apart from the insertion portion 2316. A sealing groove 2318 is formed between the insertion portion 2316 and the limiting ring 2317, which cooperates with the sealing portion 2342. The sealing portion 2342 and the sealing groove 2318 are interference-fitted. The arrangement of the sealing portion 2342 and the limiting ring 2317 not only increases the path connecting the inside and outside of the oil bladder 234, but also improves the bonding strength between the oil bladder 234 and the substrate 2311.

[0063] Preferably, such as Figure 8 and Figure 9As shown, the hydraulic base 23 also includes a pressure ring 235 mounted on the base plate 2311 and pressing the sealing part 2342 onto the base plate 2311. The pressure ring 235 is sleeved on the docking part 2341, which on the one hand improves the bonding strength between the oil bladder 234 and the base plate 2311, and on the other hand can limit the docking part 2341 along the radial direction of the pressure ring 235.

[0064] Furthermore, when the aforementioned adjustable foot assembly 100 is applied to a household appliance 600, the household appliance 600 has a base plate 61 and the aforementioned adjustable foot assembly 100. The base plate 61 is provided with a through hole 62 extending vertically. The adjustable foot assembly 100 is fixed to the base plate 61 by a support plate 1 and is located on the side of the base plate 61 facing away from the ground. The hydraulic foot 21 protrudes below the base plate 61 through the through hole 62.

[0065] In practical use, taking a refrigerator as an example, when the appliance is embedded in a cabinet, the hydraulic feet 21, which are installed on the back of the base plate 61 and protrude from the perforations 62, allow for quick leveling without the need for repeated pulling out for calibration. The aforementioned structural features of the adjustable foot assembly 100 make the hydraulic feet 21 easier to assemble and maintain. When the appliance 600 is installed on-site, since the adjustable foot assembly 100 is modularly integrated onto the support plate 1, the installer only needs to fix the entire assembly to the pre-reserved position on the base plate 61 using fasteners and ensure that the hydraulic feet 21 protrude from the perforations to complete the initial assembly.

[0066] Because the hydraulic lines, fluid replenisher, and multi-bladder 234 adjustment mechanism are all pre-positioned in the components and controlled by pipe clamps, positioning protrusions, a third positioning structure, a pull-out mechanism, and a split-type load-bearing plate structure, when household appliances are placed on uneven ground or in inclined cabinets, the hydraulic feet can adapt to the site environment and quickly reach a level state by injecting or adjusting the hydraulic medium. This solution not only reduces the frequent pushing, pulling, and fine-tuning of the feet in traditional installation methods, but also improves the versatility and applicability of the product in sales, transportation, warehousing, and after-sales service. Thus, while ensuring the overall aesthetics and stability of the household appliances, it reduces installation and maintenance costs, significantly improving the user experience and production assembly efficiency.

[0067] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0068] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. An adjustable foot assembly, characterized in that, include: The support plate has base support portions located on both sides and spaced apart, and a connecting portion connecting the two base support portions; The base assembly includes hydraulic feet respectively fixed to two base bearing portions and a hydraulic pipe connected between the hydraulic feet, wherein the hydraulic pipe is positioned at the connecting portion; The base bearing portion is provided with a first positioning structure for positioning the hydraulic base, and the connecting portion is provided with a second positioning structure for positioning the hydraulic pipe.

2. The adjustable foot assembly as described in claim 1, characterized in that: The first positioning structure is a positioning protrusion protruding from the base bearing portion. The hydraulic base has a hydraulic base and a support foot that cooperates with the hydraulic base. The hydraulic base is provided with a positioning hole that cooperates with the positioning protrusion for positioning. The second positioning structure is a pipe clamp fixed to the connecting portion.

3. The adjustable foot assembly as described in claim 2, characterized in that: The hydraulic base includes a base, a cylindrical body slidably mounted on the base along the axial direction and forming a receiving cavity with the base, and at least two oil bladders arranged in the receiving cavity along the extension direction of the base. The base is provided with an oil supply channel connecting the hydraulic pipe. The oil supply channel includes a main channel and a branch channel connecting the main channel and each of the oil bladders. The support foot includes a fixed seat with a rotating shaft, casters and an adjusting part disposed at both ends of the fixed seat, the casters and the adjusting part being located on both sides of the rotating shaft. The adjusting part is supported on the cylindrical body.

4. The adjustable foot assembly as described in claim 3, characterized in that: The base has a base plate and a sleeve extending axially from the base plate along the cylinder body. The cylinder body is slidably fitted inside the sleeve. The cylinder body includes a first cylindrical portion corresponding to each of the oil bladders and a first constriction portion located between two adjacent first cylindrical portions. The size of the first constriction portion perpendicular to the oil bladder arrangement direction is less than or equal to the diameter of the first cylindrical portion. The sleeve includes a second cylindrical portion corresponding to each of the first cylindrical portions and a second constriction portion located between two adjacent second cylindrical portions. The first constriction portion is located inside the second constriction portion.

5. The adjustable foot assembly as described in claim 1, characterized in that: The base assembly also includes a fluid replenisher installed on the hydraulic pipeline, and a third positioning structure is provided between the fluid replenisher and the connecting part for mutual positioning.

6. The adjustable foot assembly as described in claim 1, characterized in that: The support plate is U-shaped, and the base support parts are symmetrically arranged on both sides of the support plate. The base support parts and the connecting parts are arranged in a stepped manner on different planes.

7. The adjustable foot assembly as described in claim 1, characterized in that: The support plate is designed in a split manner and includes a first support plate located on both sides and a connecting plate connected between the first support plates. The first support plates are symmetrically arranged on both sides of the connecting plate. The bottom support part is disposed on the first support plate, and the connecting part is partially disposed on the first support plate and partially disposed on the connecting plate.

8. The adjustable foot assembly as described in claim 7, characterized in that: The first support plate is L-shaped and includes a first plate with a base support portion and a second plate connecting the first plate. The second plate is fixedly connected to the connecting plate, and the connecting plate is in a straight line.

9. The adjustable foot assembly as described in claim 8, characterized in that: The second plate has a mating edge that aligns with the connecting plate and a mating portion formed by bending perpendicularly from the mating edge; the connecting plate has a mating edge that matches the mating edge and a mating portion formed by bending perpendicularly from the mating edge. The mating portion and the mating portion are fixedly connected by a connecting structure. In the width direction of the second plate and the connecting plate, the width of the mating portion and the mating portion is smaller than the width of the second plate and the connecting plate, so as to form a connecting portion for hydraulic pipes to pass through at the positions of adjacent mating portions and mating portions.

10. The adjustable foot assembly as described in claim 9, characterized in that: The connection structure includes a positioning groove on one of the docking part and the mating part, and a positioning card on the other, so as to achieve pre-positioning through the positioning groove and the positioning card. The connection structure also includes fixing holes correspondingly provided on the docking part and the mating part, and fasteners that mate with the fixing holes.

11. The adjustable foot assembly as described in claim 8, characterized in that: A pull-out mechanism is provided between the second plate and the connecting plate so that the width of the bearing plate is adjustable as a whole. The pull-out mechanism includes a track formed on one of the first plate and the connecting plate and a slide rail on the other, as well as a plurality of positioning structures for positioning the slide rail and the track in a mating position.

12. The adjustable foot assembly as claimed in claim 1, characterized in that: The bearing plate has a bearing surface, the base assembly is fixed to the bearing surface, and a surrounding wall extends from the bearing surface around the bearing plate.

13. A household appliance, characterized in that: The household appliance has a base plate and an adjustable foot assembly as described in any one of claims 1 to 12. The base plate has a through hole running vertically through it. The adjustable foot assembly is fixed to the base plate by a support plate and is located on the side of the base plate facing away from the ground. The hydraulic foot protrudes through the through hole to the bottom of the base plate.

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