Movable trundle lifting mechanism and household appliance system

Abstract

The utility model relates to the field of household appliances, in particular to a movable trundle lifting mechanism and a household appliance system, and aims to solve the problem that a guide structure of a movable trundle lifting mechanism of an existing household appliance is difficult to effectively combine with other parts, so that the movable trundle lifting mechanism is often unstable during unfolding and folding. In order to achieve the purpose, the movable trundle lifting mechanism for the household appliance comprises a base, a movable groove and a rolling wheel assembly, a guide groove is formed in the base, the movable groove is movably formed in the guide groove, an inclined groove is formed in the side wall of the movable groove, the rolling wheel assembly is rotatably arranged on the guide groove through a connecting structure, and the rolling wheel assembly is arranged in the inclined groove; therefore, the skewed slot can drive the roller assembly to move away from the base.

Description

Technical Field

[0001] This application relates to the field of household appliances, specifically providing a mobile caster lifting mechanism and a household appliance system. Background Technology

[0002] Portable caster lifting mechanisms are widely used in various equipment, such as refrigerators, washing machines, and air conditioners, to facilitate the movement and positioning of the equipment. Most portable caster lifting mechanisms rely on simple mechanical structures to achieve the lifting function of the casters, typically using manual or automatic drive to raise or lower the casters, thereby fixing or moving the equipment.

[0003] Existing designs for caster lifting mechanisms typically focus on achieving basic lifting functionality, ensuring the casters can rise and fall smoothly, while lacking effective design and optimization of the guide structure. This often leads to instability during the deployment and retraction of the caster lifting mechanism. This is because the guide structure needs to work closely with other components of the caster lifting mechanism, and designers often face the challenge of effectively integrating the guide structure with the mechanism.

[0004] Accordingly, there is a need in the art for a new mobile caster lifting mechanism and household appliance system to solve the above problems. Utility Model Content

[0005] This application aims to solve the aforementioned technical problem, namely, the difficulty in effectively integrating the guide structure of the existing mobile caster lifting mechanism with other components, which often leads to instability when the mobile caster lifting mechanism is extended and retracted.

[0006] In a first aspect, this application provides a movable caster lifting mechanism for household appliances, characterized in that it comprises: a base, wherein the base is provided with a guide groove; a movable groove, wherein the movable groove is movably disposed in the guide groove, and an inclined groove is provided on the side wall of the movable groove; and a roller assembly, wherein the roller assembly is rotatably disposed on the guide groove via a connecting structure, and the roller assembly is disposed in the inclined groove such that the inclined groove can drive the roller assembly to move away from the base.

[0007] In the above-mentioned optional technical solution for the movable caster lifting mechanism for household appliances, the roller assembly includes a first connecting shaft and a roller disposed on the first connecting shaft, the connecting structure is disposed on the first connecting shaft, the connecting structure is rotatably connected to the guide groove, and the first connecting shaft is in contact with the inclined groove.

[0008] In the above-mentioned optional technical solution of the movable caster lifting mechanism for household appliances, a notch is provided on the side wall of the guide groove, the notch extends from the bottom of the side wall of the guide groove to the top of the side wall of the guide groove, and the first connecting shaft is disposed in the notch.

[0009] In the above-mentioned optional technical solution of the movable caster lifting mechanism for household appliances, the diameter of the first connecting shaft is greater than the width of the notch.

[0010] In the above-mentioned optional technical solution of the movable caster lifting mechanism for household appliances, the connecting structure is provided with a second connecting shaft, and the side wall of the movable groove is provided with a first strip hole extending along the moving direction of the movable groove. The second connecting shaft passes through the first strip hole and is rotatably connected to the side wall of the guide groove.

[0011] In the above-mentioned optional technical solution of the movable caster lifting mechanism for household appliances, the movable caster lifting mechanism further includes a handle structure. The handle structure is configured to drive the movable groove to reciprocate in the guide groove. A mounting structure is connected to one side of the movable groove. The mounting structure protrudes from the bottom of the movable groove. The handle structure is disposed on the mounting structure so that when the movable caster lifting mechanism is installed on a household appliance with a protruding extension edge at the bottom, the handle structure can pass over the extension edge; and / or each wall surface of the movable groove is in contact with each wall surface of the guide groove.

[0012] In the above-mentioned optional technical solution for the movable caster lifting mechanism for household appliances, the base further includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate being connected to opposite sides of the guide groove in its guide path direction, and both the first mounting plate and the second mounting plate being used to mount the feet.

[0013] In the above-mentioned optional technical solution for the movable caster lifting mechanism for household appliances, the base includes a telescopic base, which is used to automatically level the household appliance.

[0014] In the above-mentioned optional technical solution of the movable caster lifting mechanism for household appliances, the base foot further includes a fixed base foot, which is configured to pass through the first mounting plate and be connected to the bottom of the household appliance; the telescopic base foot is mounted on the second mounting plate; and / or the second mounting plate is provided with a second strip hole, which is arranged along the guide path direction of the guide groove; the telescopic base foot is provided with a connecting post, which is configured to pass through the second strip hole and be connected to the bottom of the household appliance.

[0015] On the other hand, this application also provides a household appliance system, characterized in that the household appliance system includes a household appliance and a movable caster lifting mechanism as described in any of the above embodiments, wherein the base is installed on the bottom of the household appliance.

[0016] Those skilled in the art will understand that the movable caster lifting mechanism for household appliances of this application includes a base, a movable groove, and a roller assembly. The base is provided with a guide groove, the movable groove is movably disposed in the guide groove, and the side wall of the movable groove is provided with an inclined groove. The roller assembly is rotatably disposed on the guide groove through a connecting structure and is disposed in the inclined groove so that the inclined groove can drive the roller assembly to move away from the base.

[0017] When the roller assembly needs to be deployed, the movable groove moves smoothly along a first direction under the guidance of the guide groove, causing the roller assembly to move uphill along the inclined groove. Driven by the inclined wall of the inclined groove, the roller assembly gradually deploys until it contacts the ground. When the roller assembly needs to be retracted, the movable groove moves smoothly along a second direction opposite to the first direction under the guidance of the guide groove, causing the roller assembly to move downhill along the inclined groove, allowing it to retract. This application improves the guiding structure in which the guide groove and movable groove cooperate. By setting an inclined groove on the side wall of the movable groove, and rotatably mounting the roller assembly on the guide groove via a connecting structure, the roller assembly is effectively combined with the guide structure, enabling the caster lifting mechanism to deploy and retract smoothly. Attached Figure Description

[0018] The preferred embodiments of this application are described below with reference to the accompanying drawings, in which:

[0019] Figure 1 This is a partial structural schematic diagram of the movable caster lifting mechanism of this application;

[0020] Figure 2 This is a front view of the household appliance system described in this application;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a side view of the household appliance system of this application;

[0023] Figure 5 This is a bottom view of the household appliance system described in this application;

[0024] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0025] Figure 7 yes Figure 5A partial sectional view at point AA in the middle;

[0026] Figure 8 This is a structural schematic diagram of the telescopic foot of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Base; 11-Guide groove; 111-Notch groove; 12-First mounting plate; 13-Second mounting plate; 131-Second strip hole; 2-Modible groove; 21-Inclined groove; 22-First strip hole; 23-Mounting structure; 231-Elongated hole; 3-Roller assembly; 31-First connecting shaft; 32-Roller; 4-Connecting structure; 5-Second connecting shaft; 6-Handle structure; 61-Handle part; 62-Drive part; 621-Body; 622-First rotating shaft; 623-Second rotating shaft; 7-Foot; 71-Telescopic foot; 711-Foot base; 7111-Liquid channel; 712-Adjusting foot; 7121-Receiving cavity; 713-Telescopic cavity; 714-Communicating structure; 72-Fixed foot; 8-Extended edge; 9-Washing machine. Detailed Implementation

[0029] Preferred embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0030] It should be noted that, in the description of this application, the terms "upper" and "lower" refer to the upper and lower parts of the household appliance in its operating state, based on the height direction. "Front" refers to the direction near the door, based on the horizontal direction of the household appliance in its operating state, and "rear" refers to the direction near the back of the household appliance, based on the horizontal direction of the household appliance in its operating state. Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" in the description of this application should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] This application provides a movable caster lifting mechanism for a household appliance, which can be a washing machine 9, a washer-dryer combo, a dryer, or a refrigerator, etc., and this application is not limited thereto. For ease of explanation, the household appliance described below will be a washing machine 9 as an example. Figures 1 to 7As shown, the movable caster lifting mechanism includes a base 1, a movable groove 2, and a roller assembly 3 located at the bottom of the washing machine 9. The base 1 is fixedly connected to the bottom plate of the washing machine 9. The base 1 is provided with a guide groove 11, and the movable groove 2 is movably disposed in the guide groove 11. The side wall of the movable groove 2 is provided with an inclined groove 21. The roller assembly 3 is rotatably disposed on the guide groove 11 through a connecting structure 4. The roller assembly 3 is disposed in the inclined groove 21 so that the inclined groove 21 can drive the roller assembly 3 to move away from the base 1. Possibly, both the guide groove 11 and the movable groove 2 can be elongated, with both ends of the guide groove 11 and the movable groove 2 being open in the length direction, and both sides of the guide groove 11 and the movable groove 2 having side walls in the width direction.

[0032] When the roller assembly 3 needs to be deployed, the movable groove 2 moves smoothly along the first direction under the guidance of the guide groove 11, causing the roller assembly 3 to move uphill along the inclined groove 21. Driven by the inclined wall of the inclined groove 21, the roller assembly 3 gradually deploys until it contacts the ground. When the roller assembly 3 needs to be retracted, the movable groove 2 moves smoothly along the second direction opposite to the first direction under the guidance of the guide groove 11, causing the roller assembly 3 to move downhill along the inclined groove 21, allowing it to retract. This application improves the guiding structure in which the guide groove 11 and the movable groove 2 cooperate. By setting the inclined groove 21 on the side wall of the movable groove 2, and rotatably mounting the roller assembly 3 on the guide groove 11 via the connecting structure 4, the guide structure and the roller assembly 3 are effectively combined, enabling the movable caster lifting mechanism to deploy and retract smoothly.

[0033] In one possible implementation, the roller assembly 3 includes a first connecting shaft 31 and a roller 32 disposed on the first connecting shaft 31. The first connecting shaft 31 has a connecting structure 4, which is rotatably connected to the guide groove 11. The first connecting shaft 31 is in contact with the inclined groove 21. Possibly, the roller 32 is rotatably connected to both ends of the first connecting shaft 31. The connecting structure 4 is configured as a connecting rod, with a first shaft hole at one end. The first connecting shaft 31 is fixed in the first shaft hole, and the end of the connecting rod away from the first shaft hole is rotatably connected to the guide groove 11. The number of connecting rods can be one or two, etc., and this application does not limit the number. It should be noted that the connection methods between the first connecting shaft 31 and the roller 32, and between the first connecting shaft 31 and the connecting rod, are merely exemplary. The specific connection methods can be adjusted. For example, the roller 32 can be fixedly connected to opposite ends of the first connecting shaft 31, and the first connecting shaft 31 can be rotatably connected to the first shaft hole of the first connecting rod, etc. These adjustments do not deviate from the principle of this application and are all within the protection scope of this application. In addition, the number of rollers 32 can be replaced by one, which can be rotatably connected to the middle of the first connecting shaft 31 at a position such as the center.

[0034] Since the first connecting shaft 31 is rotatably connected to the guide groove 11 via the connecting structure 4, this rotatable connection allows the first connecting shaft 31 to adaptively adjust its angle according to the shape of the inclined groove 21 as it moves along the inclined groove 21, making the movement of the entire roller assembly 3 smoother. When the moving speed of the movable groove 2 changes slightly or encounters minor external force interference, the first connecting shaft 31 within the inclined groove 21 can balance these effects through the rotation of the connecting structure 4, thereby ensuring the stability of the roller assembly 3 when unfolding or retracting.

[0035] In one possible implementation, the guide groove 11 has a notch 111 on its side wall, extending from the bottom of the side wall (the side closest to the bottom of the guide groove 11) to the top of the side wall (the side away from the bottom of the guide groove 11, which is through). The first connecting shaft 31 is disposed in the notch 111. For example, after the movable caster lifting mechanism is installed at the bottom of the washing machine 9 and the washing machine 9 is in its normal placement state, the notch 111 is arranged vertically. Possibly, notches 111 are provided on both opposite side walls of the guide groove 11, and the opposite sides of the first connecting shaft 31 are correspondingly disposed in the notches 111 on the side walls. The roller 32 can be disposed outside the guide groove 11 and connected to the opposite ends of the first connecting shaft 31. Alternatively, the roller 32 can also be disposed inside the guide groove 11 and connected to the middle of the first connecting shaft 31. These simple variations do not depart from the principle of this application and are all within the protection scope of this application.

[0036] The notch 111 on the side wall of the guide groove 11 provides a precise movement path for the first connecting shaft 31, effectively avoiding offset and misalignment caused by rotational loosening, thereby ensuring the smoothness and stability of the roller assembly 3's unfolding and retracting actions.

[0037] Furthermore, the diameter of the first connecting shaft 31 is larger than the width of the notch 111. When the roller assembly 3 retracts, the first connecting shaft 31 is pressed into the notch 111 under the weight of the washing machine 9. After the feet 7 of the washing machine 9 contact the ground, because the diameter of the first connecting shaft 31 is larger than the width of the notch 111, the first connecting shaft 31 will be stably positioned in the notch 111, effectively preventing the first connecting shaft 31 from shaking in the notch 111, avoiding resonance noise during the spin-drying process of the washing machine 9, and avoiding the risk of wear. It also prevents the first connecting shaft 31 from drooping down, so that the overall structure remains stable when the feet 7 contact the ground to support the washing machine 9.

[0038] As one possible implementation method, refer to Figure 1 and Figure 7The connecting structure 4 is provided with a second connecting shaft 5, and the side wall of the movable groove 2 is provided with a first strip hole 22 extending along the moving direction of the movable groove 2. The second connecting shaft 5 passes through the first strip hole 22 and is rotatably connected to the side wall of the guide groove 11. For example, when the connecting structure 4 is a connecting rod, the end of the connecting rod away from the first shaft hole is provided with a second shaft hole, and the second connecting shaft 5 is fixedly connected in the second shaft hole. When there are two connecting rods, the second connecting shaft 5 is fixed in the second shaft holes of the two connecting rods. The first strip hole 22 can be provided on the opposite side walls of the movable groove 2, and both ends of the second connecting shaft 5 pass through the first strip hole 22 on both sides and are rotatably connected to the opposite side walls of the movable groove 2. Of course, the above description is not restrictive. As long as the connecting structure 4 is rotatably connected to the guide groove 11, its arrangement can be adjusted. For example, the connecting structure 4 can be set as a square connecting plate, with a third connecting shaft on the side of the connecting plate away from the first connecting shaft 31, a clearance groove at the bottom of the movable groove 2, and a third shaft hole at the position corresponding to the clearance groove of the guide groove 11. The third connecting shaft is rotatably connected in the third shaft hole. These adjustments do not deviate from the principle of this application and are all within the protection scope of this application.

[0039] The first strip hole 22 provides space for the movement of the movable groove 2 in the guide groove 11, effectively avoiding the obstruction caused by the rotational connection between the second connecting shaft 5 and the guide groove 11, so that the movable groove 2 can move smoothly along the guide groove 11, thereby accurately driving the roller assembly 3 to complete the unfolding and retraction operations, ensuring the smooth operation of the movable caster lifting mechanism.

[0040] In one possible implementation, each wall surface of the movable groove 2 is in contact with each wall surface of the guide groove 11. When the movable groove 2 is in contact with the wall surface of the guide groove 11, it ensures that the movable groove 2 moves smoothly along a predetermined trajectory within the guide groove 11, preventing the movable groove 2 from shifting or wobbling during movement. This makes the unfolding and retraction process of the roller assembly 3 smoother, preventing instability caused by excessive gaps. It also prevents noise generated by the movable groove 2 colliding with the guide groove 11 during the operation of the washing machine 9.

[0041] As one possible implementation method, refer to Figure 3 and Figure 7The washing machine 9 has a protruding extension edge 8 at its bottom. This extension edge 8 can be located near the door of the washing machine 9, i.e., the front side of the washing machine 9, and can be positioned along the width of the washing machine 9. The extension edge 8 can be understood as an extension edge extending downwards from the bottom shell of the washing machine 9, or an extension edge extending downwards from the bottom side of the front shell of the washing machine 9, etc. The extension edge 8 can be fixedly connected to the bottom plate of the washing machine 9. For example, if the bottom plate has a flange, the flange and the extension edge 8 can be fitted together and fixed by bolts, welding, etc., thereby enhancing the structural strength of the washing machine 9 and improving its overall stability. The extension edge 8 can also provide protection for the components at the bottom of the washing machine 9, effectively preventing damage or scratches to the bottom structure of the washing machine 9 from external objects, and can also serve as a decorative panel.

[0042] As one possible implementation method, refer to Figure 3 and Figure 7 The movable caster lifting mechanism also includes a handle structure 6, which is configured to drive the movable groove 2 to reciprocate in the guide groove 11. A mounting structure 23 is connected to one side of the movable groove 2, protruding from the bottom of the groove. The handle structure 6 is mounted on the mounting structure 23, extending beyond the extension edge 8. The mounting structure 23 can be configured as a mounting plate, formed at one end of the bottom wall of the movable groove 2. After the movable caster lifting mechanism is installed on the washing machine 9, the mounting plate should protrude downwards and bend relative to the bottom wall of the movable groove 2. It is understood that the handle structure 6 includes a handle portion 61 and a drive portion 62, such that the handle portion 61 drives the movable groove 2 to reciprocate in the guide groove 11 via the drive portion 62. The drive portion 62 can be a linkage mechanism, a cam mechanism, a rack and pinion mechanism, a crank mechanism, etc. An example of a possible embodiment will be described below, referring to 1. Figure 6 and Figure 7 The drive unit 62 includes a body 621 and a first rotating shaft 622 and a second rotating shaft 623 disposed on the body 621. The body 621 can be integrally formed with the handle 61. A first mounting plate 12 and a second mounting plate 13 can be disposed on opposite sides of the guide groove 11 in its guide path direction. A rotating shaft hole is provided on the first mounting plate 12, and the first rotating shaft 622 is rotatably connected in the rotating shaft hole. An elongated hole 231 can be provided on the mounting plate, and the second rotating shaft 623 passes through the elongated hole 231 and is rotatably connected to the first mounting plate 12. The elongated hole 231 and the second rotating shaft 623 can move relative to each other, so that after the handle 61 rotates at a certain angle, it can drive the movable groove 2 to move in the first direction, thereby realizing the unfolding of the roller assembly 3. After the handle 61 rotates in the opposite direction at a certain angle, it can drive the movable groove 2 to move in the second direction opposite to the first direction, thereby realizing the retraction of the roller assembly 3.

[0043] The above arrangement allows for a certain distance H between the handle structure 6 and the bottom of the guide groove 11, enabling the handle structure 6 to extend beyond the extension edge 8. Without eliminating the reinforcing extension edge 8, it also facilitates the user to rotate the handle part 61 to achieve the lifting and lowering of the caster lifting mechanism.

[0044] Possibly, the handle 61 is made of plastic, while the drive unit 62 is made of metal. Since the drive unit 62 is made of metal, it provides sufficient strength and stability to ensure that it does not deform or break when transmitting power. The handle 61 is made of plastic, making it more comfortable for the user to grip. Especially in cold environments, the plastic handle will not become cold like metal, improving the user experience.

[0045] As one possible implementation, both the first mounting plate 12 and the second mounting plate 13 are used to mount the feet 7. This arrangement improves the mounting strength at the feet 7 and further enhances the overall connection strength between the caster lifting mechanism and the base plate of the washing machine 9, making the caster lifting mechanism more stable and thus improving the overall stability of the equipment. Especially under complex ground conditions or frequent movement, it ensures that the equipment moves smoothly at all times.

[0046] In one possible implementation, the base 7 includes a telescopic base 71, which is used to automatically level the household appliance. When the user needs to move the washing machine 9, the lifting mechanism of the movable casters can be extended, thereby moving the household appliance through the lifting mechanism. After stopping the movement, the lifting mechanism of the movable casters can be retracted, and the telescopic base 71 will perform a leveling operation after contacting the ground, ensuring that the equipment immediately returns to a stable state. The movement and stabilization of the equipment can be achieved without any additional operation, thus enabling seamless and stable switching of the washing machine 9's usage scenarios.

[0047] In one possible implementation, the base 7 further includes a fixed base 72, which is configured to pass through the first mounting plate 12 and connect to the bottom of the washing machine 9. A telescopic base 71 is mounted on the second mounting plate 13. The fixed base 72 may include a support pad and a threaded rod. The threaded rod is connected to one side of the support pad, passes through the first mounting plate 12, and connects to the base plate of the washing machine 9. The support pad is used to contact a reference surface such as the ground. A fastening nut may be fitted onto the threaded rod, securing it to the base plate. The first mounting plate 12 can act as a washer, improving connection stability. Alternatively, the threaded rod can be replaced with a rod without threads. A buckle may be provided at the end of the rod, and a slot is provided on the base plate of the washing machine 9. A secure connection with the base plate is achieved through the engagement of the buckle and the slot.

[0048] A fixed foot 72 is provided on one side of the guide groove 11, and a telescopic foot 71 is provided on the other side. This allows the fixed foot 72 to be located at the front of the washing machine 9 and the telescopic foot 71 to be located at the rear of the washing machine 9 after the movable caster lifting mechanism is installed. During the use of the washing machine 9, the fixed foot 72 at the front makes the front more stable and reduces the risk of damage to the front foot 7 due to bumps or other impacts. The telescopic foot 71 at the rear provides flexibility and can be adjusted in height according to actual needs, allowing the washing machine 9 to maintain stable operation in various scenarios.

[0049] In one possible implementation, the second mounting plate 13 is provided with a second strip-shaped hole 131, which is arranged along the guide path direction of the guide groove 11, that is, along the length direction of the guide groove 11. The telescopic foot 71 is provided with a connecting post, which is configured to pass through the second strip-shaped hole 131 and connect to the bottom of the washing machine 9. In this embodiment, the connecting post can be a threaded post, with one end connected to the telescopic foot 71 and the other end screwed into the bottom plate of the washing machine 9. Alternatively, the threaded post can be replaced with a rod without threads, and the end of the rod can be provided with a buckle. The bottom plate of the washing machine 9 is provided with a slot, and a fastening connection with the bottom plate is achieved by the buckle engaging with the slot.

[0050] For example, when the movable caster lifting mechanism is arranged along the front-to-back direction of the washing machine 9, the above arrangement allows the position of the telescopic feet 71 to be adjusted relative to the front and back of the washing machine 9. This enables adjustment of the position of the feet 71 for washing machines 9 of different depths, making it suitable for different models of washing machines 9 and facilitating the modification and upgrading of existing washing machines 9. The bottom plate of the washing machine 9 can be pre-drilled with fixing holes corresponding to the positions of the strip holes, thus facilitating the installation of the connecting posts on the telescopic feet 71.

[0051] As one possible implementation, this application has two movable caster lifting mechanisms, located on opposite sides of the bottom plate of the washing machine 9. The two movable caster lifting mechanisms can be arranged along the front-to-back direction of the washing machine 9. Each movable caster lifting mechanism can have multiple roller assemblies 3. Taking two as an example, both roller assemblies 3 are rotatably connected to opposite sides of the guide groove 11 via the connecting structure 4 to improve stability during movement. The movable groove 2 has inclined grooves 21 at the corresponding positions of the two roller assemblies 3, so that each roller assembly 3 is arranged in a corresponding manner in the inclined groove 21.

[0052] The following describes possible implementations of the telescopic foot 71.

[0053] like Figure 8As shown, there are at least two telescopic feet 71. Each telescopic foot 71 includes a foot base 711, an adjusting foot 712, and a telescopic cavity 713. The foot base 711 is mounted on the second mounting plate 13 and sleeved on the adjusting foot 712. The adjusting foot 712 is movable along the height direction and has a receiving cavity 7121. The telescopic cavity 713 is disposed in the receiving cavity 7121 and configured to drive the adjusting foot 712 to move. The telescopic cavities 713 of at least two telescopic feet 71 are connected by a connecting structure 714. The connecting structure 714 can be a pipe, or it can be an interconnected pipe and a liquid storage tank, etc. The telescopic cavity 713 can be a corrugated cavity made of flexible material, such as rubber, which can be fixed or contacted with the inner wall of the receiving cavity 7121 and abut against the foot base 711. However, this is not a limitation; the telescopic cavity 713 can also be a rubber bladder, etc.

[0054] The telescopic cavity 713 can be filled with hydraulic medium. Under pressure, the hydraulic medium can flow between the interconnected telescopic cavities 713. When the ground is uneven, the unevenness generates different pressures. The fluidity of the hydraulic medium allows each telescopic cavity 713 to adaptively adjust and extend, thereby driving the adjusting foot 712 to adaptively extend and extend relative to the base 711. After the hydraulic medium stops flowing, the telescopic base 71 can automatically level itself.

[0055] The various telescopic cavities 713 are connected by a connecting structure 714. Each foot 711 has a liquid channel 7111, and each telescopic cavity 713 has a liquid inlet. The liquid inlet of each telescopic foot 71 is connected to one end of the liquid channel 7111, and the other end of the liquid channel 7111 of each telescopic foot 71 is connected via the connecting structure 714. Possibly, a mounting groove is formed within the foot 711. The groove opening has a first limiting ring protruding inwards, and the outer wall of the adjusting foot 712 has a second limiting ring located above the first limiting ring, so that the first limiting ring provides a limit, preventing the adjusting foot 712 from falling off.

[0056] The number and position of the second strip-shaped holes 131 used to install the telescopic feet 71 can be adjusted according to the actual application. For example, when the foot base 711 is square, connecting holes can be provided at all four corners of the foot base 711. In this case, the second strip-shaped holes 131 can be set on opposite sides of the second mounting plate 13. The second strip-shaped holes 131 on one side correspond to the two connecting holes on one side of the foot base 711, and the second strip-shaped holes 131 on the other side correspond to the two connecting holes on the other side of the foot base 711. Then, bolts or screws are passed through the corresponding connecting holes and the second strip-shaped holes 131 in sequence and connected to the base plate. Alternatively, if connecting holes are provided in the middle of opposite sides of the foot base 711, only one second strip-shaped hole 131 can be provided. Then, bolts or screws are passed through the corresponding connecting holes and the second strip-shaped hole 131 in sequence and connected to the base plate. In addition, positioning holes can be provided on the second mounting plate 13 to pre-position the telescopic feet 71 before connection, improving accuracy.

[0057] It should be noted that although the telescopic foot 71 described in this application is based on a hydraulic foot 7, this is not intended to limit the scope of protection of this application. As long as the telescopic foot 71 has an automatic leveling function, it can be any existing or future structure. For example, the telescopic foot 71 can be configured as an electrically operated telescopic foot 71, meaning that the foot 7 is driven to extend and retract via a motor and transmission assembly. The motor can be a small DC motor or a stepper motor, installed at a specific position on the bottom of the washing machine 9, with its stability ensured by a fixed bracket. The output shaft of the motor is connected to the transmission assembly, which can be a gear set or a lead screw and nut mechanism. If it is a lead screw and nut mechanism, the motor drives the lead screw to rotate, and the nut is connected to the foot 7. As the lead screw rotates, the nut moves up and down along the lead screw, thereby driving the foot 7 to extend and retract. To achieve the automatic leveling function, corresponding control circuits and sensors can be provided. Sensors can detect the horizontal state of the washing machine 9, such as gyroscopes and accelerometers. These sensors transmit information such as the tilt angle of the washing machine 9 to the control circuit. The control circuit determines whether the washing machine 9 is in a horizontal state based on the sensor signals, and controls the operation of the motor and adjusts the length of the feet 7 until the washing machine 9 reaches a horizontal state.

[0058] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A lifting mechanism for movable casters in household appliances, characterized in that, include: A base, wherein a guide groove is provided on the base; The movable groove is movably disposed in the guide groove, and the side wall of the movable groove is provided with an inclined groove; A roller assembly is rotatably mounted on the guide groove via a connecting structure. The roller assembly is disposed in the inclined groove so that the inclined groove can drive the roller assembly to move away from the base.

2. The movable caster lifting mechanism for household appliances according to claim 1, characterized in that, The roller assembly includes a first connecting shaft and a roller disposed on the first connecting shaft. The connecting structure is disposed on the first connecting shaft and is rotatably connected to the guide groove. The first connecting shaft is in contact with the inclined groove.

3. The movable caster lifting mechanism for household appliances according to claim 2, characterized in that, The guide groove has a notch on its side wall, which extends from the bottom of the guide groove to the top of the guide groove side wall, and the first connecting shaft is disposed in the notch.

4. The movable caster lifting mechanism for household appliances according to claim 3, characterized in that, The diameter of the first connecting shaft is greater than the width of the notch.

5. The movable caster lifting mechanism for household appliances according to claim 2, characterized in that, The connecting structure is provided with a second connecting shaft, and the side wall of the movable groove is provided with a first strip hole extending along the moving direction of the movable groove. The second connecting shaft passes through the first strip hole and is rotatably connected to the side wall of the guide groove.

6. The movable caster lifting mechanism for household appliances according to claim 1, characterized in that, The movable caster lifting mechanism also includes a handle structure, which is configured to drive the movable groove to reciprocate in the guide groove. One side of the movable groove is connected to a mounting structure, which protrudes from the bottom of the movable groove. The handle structure is mounted on the mounting structure so that when the movable caster lifting mechanism is installed on a household appliance with a protruding extension edge at the bottom, the handle structure can pass over the extension edge. and / or The walls of the movable groove are in contact with the walls of the guide groove.

7. The movable caster lifting mechanism for household appliances according to any one of claims 1 to 6, characterized in that, The base also includes a first mounting plate and a second mounting plate, which are connected to opposite sides of the guide groove in its guide path direction. Both the first mounting plate and the second mounting plate are used to mount the feet.

8. The movable caster lifting mechanism for household appliances according to claim 7, characterized in that, The base includes telescopic feet, which are used to automatically level the household appliance.

9. The movable caster lifting mechanism for household appliances according to claim 8, characterized in that, The base also includes a fixed base, which is configured to pass through the first mounting plate and connect to the bottom of the household appliance; the telescopic base is mounted on the second mounting plate; and / or The second mounting plate is provided with a second strip hole, which is arranged along the guide path of the guide groove. The telescopic foot is provided with a connecting post, which is configured to pass through the second strip hole and connect to the bottom of the household appliance.

10. A household appliance system, characterized in that, The household appliance system includes a household appliance and a movable caster lifting mechanism as described in any one of claims 1 to 9, wherein the base is mounted on the bottom of the household appliance.

Images