Movable trundle assembly, base mechanism and household appliance

Abstract

The utility model relates to the technical field of household appliances, in particular to a moving trundle assembly, a base mechanism and a household appliance, and aims to solve the problem of how to ensure the moving stability of the household appliance. In order to achieve the purpose, the movable trundle assembly of the household appliance comprises a base and a movable support wheel set, the base is arranged at the bottom of the household appliance, a first structure part is arranged on the base, and an avoiding structure is arranged on the first structure part; the movable support wheel set is arranged on the base and can drive the household appliance to move. Due to the fact that the avoiding structure is arranged on the base of the movable trundle assembly and can avoid obstacles at the bottom of the household appliance, horizontal installation of the movable trundle assembly can be guaranteed, and stability of the household appliance in the moving process is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of household appliances, and particularly provides a mobile caster assembly, a base mechanism, and a household appliance. Background Art

[0002] In modern household life, household appliances have become an indispensable tool in daily life. With the continuous upgrading and complication of the functions of household appliances, users' requirements for the operation convenience, stability, and overall usage experience of these devices are also increasing day by day. Against this background, many household appliances have started to be equipped with mobile caster assemblies at the bottom, so that users can easily move the devices and reduce the handling difficulties caused by the large volume and heavy weight of the devices themselves. Especially when cleaning, maintaining, or rearranging the devices, the mobile caster assembly can significantly improve the operation flexibility and convenience, and has become an important design improvement in modern households that cannot be ignored.

[0003] However, although the application of mobile caster assemblies in household appliances is gradually becoming popular, there are still certain challenges in the structural design at the bottom of the devices. The bottom of household appliances may not always be flat. In these cases, after the mobile caster assembly is installed, due to the uneven bottom, there may be a height difference between the caster assemblies, which may cause the device to be unable to move smoothly when moving, resulting in the device being prone to shaking, blocking, or even jamming during the movement, bringing inconvenience to the user's operation. In addition, the installation of the mobile caster assembly itself also faces some inconveniences. The bottom structure of household appliances is complex, and some of these bottom components may need to be disassembled or rearranged during the installation of the mobile caster assembly, increasing the complexity and time cost of the operation.

[0004] Correspondingly, there is a need in the art for a new mobile caster assembly, a base mechanism, and a household appliance to solve the above problems. Summary of the Invention

[0005] This application aims to solve the above technical problems, that is, to solve the problem of how to ensure the smooth movement of household appliances.

[0006] In a first aspect, this application provides a mobile caster assembly for a household appliance, characterized in that the mobile caster assembly includes: a base, the base is arranged at the bottom of the household appliance, a first structural part is arranged on the base, and an avoidance structure is arranged on the first structural part; a mobile support wheel set, the mobile support wheel set is arranged on the base and is configured to be able to drive the household appliance to move. In addition, due to the effective avoidance of the avoidance structure, the installation of the mobile caster assembly can be facilitated.

[0007] Since an avoidance structure is provided on the base of the mobile caster assembly, the avoidance structure can avoid obstacles at the bottom of the household appliance, thereby ensuring the horizontal installation of the mobile caster assembly, and further ensuring the stability of the household appliance during movement, avoiding movement obstruction caused by tilt or instability, and increasing the service life of the washing machine.

[0008] In the optional technical solution of the mobile caster assembly of the household appliance mentioned above, the avoidance structure is configured as an avoidance groove, the bottom of the household appliance is provided with a protruding extension edge, and the avoidance groove is used to accommodate the extension edge.

[0009] Since the first structural part of the base of the mobile caster assembly of the present application is provided with an avoidance groove, the avoidance groove can avoid the extended edge of the bottom of the household appliance, so that the mobile caster assembly can be horizontally installed on the bottom of the household appliance while forming bottom protection on the extended edge, thereby improving the stability of the household appliance during movement, avoiding movement obstruction caused by tilt or instability, extending the service life of the washing machine, and improving the user experience. Therefore, the mobile caster assembly of the present application can enable the device to form bottom protection while taking into account the stability of movement.

[0010] In an optional technical solution of the above-mentioned mobile caster assembly for household appliances, the avoidance groove is formed by a bottom wall and side walls arranged on both sides of the bottom wall; or the avoidance groove is configured as a stepped groove.

[0011] The design of the avoidance groove can simply and effectively accommodate the extended edge, preventing the extended edge from protruding and affecting the installation and use of the mobile caster assembly. The stepped groove can better adapt to extended edges of different shapes and sizes, further improving the stability of the installation and the smoothness of the moving process.

[0012] In the optional technical solution of the mobile caster assembly of the above-mentioned household appliance, the mobile bracket wheel group is configured to be able to be deployed and retracted, so that the base assembly of the household appliance can support the household appliance when retracted, and can drive the household appliance to move when deployed.

[0013] In the optional technical solution of the mobile caster assembly of the above-mentioned household appliance, a second structural portion is also provided on the base, the first structural portion and the second structural portion are located on opposite sides of the base, the base assembly includes a first base and a second base, the first structural portion is provided with a first mounting structure for mounting the first base, and the second structural portion is provided with a second mounting structure for mounting the second base.

[0014] Since the first structural part and the second structural part are located on opposite sides of the base, after the first foot is installed on the first structural part and the second foot is installed on the second structural part, the overall stability can be increased. In addition, the above setting method can also simplify the installation process of the feet and the mobile caster assembly, improve the assembly efficiency, and improve the installation strength at the feet, which further enhances the overall connection strength between the mobile caster assembly and the bottom of the household appliance, making the installation of the mobile caster assembly more stable, thereby improving the overall stability of the device. Especially under complex ground conditions or frequent movement, the device can always move smoothly.

[0015] In an alternative technical solution of the mobile caster assembly of the above household appliance, the avoidance structure is configured as an avoidance groove, and the first installation structure is arranged on the side of the first structural part close to the mobile bracket wheel set in the avoidance groove.

[0016] The above setting method enables the first foot and the mobile bracket wheel set to be on the same side of the extension edge, so that the extension edge can provide protection for both the first foot and the mobile bracket wheel set at the same time, improving the stability of the structure.

[0017] In an alternative technical solution of the mobile caster assembly of the above household appliance, the second installation structure is configured as a strip hole, and the strip hole is arranged along the direction from the first structural part to the second structural part to enable the position of the second foot to be adjustable.

[0018] The above setting method can be applied to different models of household appliances, facilitating the transformation and upgrading of existing household appliances, and can ensure the stable support of the feet assembly for the household appliance at the same time. For example, when the first structural part is located at the front side of the bottom of the household appliance and the second structural part is located at the rear side of the bottom of the household appliance, the position of the second foot can be adjusted forward and backward relative to the washing machine, so that the position of the feet of household appliances with different depths can be adjusted.

[0019] In an alternative technical solution of the mobile caster assembly of the above household appliance, the first installation structure is configured as a first installation hole, the first foot includes a support pad and a first connection structure, the first connection structure is connected to one side of the support pad, the first connection structure passes through the first installation hole and is connected to the bottom of the household appliance; and / or the second foot is configured as a telescopic foot in the telescopic foot assembly, the telescopic foot assembly is used to automatically level the household appliance, a second connection structure is connected to the telescopic foot, and the second connection structure passes through the strip hole and is connected to the bottom of the household appliance.

[0020] Since the first foot at one side of the extension side is a fixed foot, it can ensure the stability of the foot structure on this side and will not be damaged due to excessive force. At the same time, the telescopic foot on the other side can be automatically adjusted according to the ground conditions to ensure uniform force on the entire bottom structure and reduce the risk of damage. In addition, the first foot is designed to be non-adjustable, which can provide a stable foundation for the device. Especially at the front side position, it can effectively prevent the front end of the device from shaking or tilting during use. The telescopic foot on the opposite side provides flexibility and can adjust the height according to actual needs, enabling the device to operate smoothly in various scenarios.

[0021] In an alternative technical solution of the mobile caster assembly of the above household appliance, the mobile support wheel set includes: a roller assembly rotatably disposed on the base, having a retracted position close to the base and an extended position away from the base; a limiting structure for limiting the roller assembly to the retracted position; a moving member movably disposed on the base; and a guiding structure disposed on the moving member for moving towards the roller assembly under the drive of the moving member to guide the roller assembly to the extended position. Wherein, when the roller assembly is in the extended position, the roller assembly can be separated from the limiting structure.

[0022] In the case of adopting the above solution, when the household appliance does not need to be moved, the roller assembly is in the retracted position, and the limiting structure provides a limit for the roller assembly, so that the roller assembly does not descend. In this case, the foot assembly of the household appliance contacts the ground or other supporting surfaces, thereby ensuring the stable support of the household appliance. When the household appliance needs to be moved, the guiding structure is driven by the moving member to move towards the roller assembly, so that the guiding structure guides the roller assembly to the extended position. In this case, the limiting structure is separated from the roller assembly to ensure the normal extension of the roller assembly, and thus the household appliance can be moved. The above setting method can still ensure the normal extension and retraction of the mobile caster assembly without using parts such as springs, thereby avoiding resonance noise during the operation of the household appliance.

[0023] In an alternative technical solution of the mobile caster assembly of the above household appliance, the foot assembly includes a telescopic foot assembly configured to automatically level the household appliance.

[0024] In the case of adopting the above solution, when the user needs to move a household appliance, the movable caster assembly can be deployed, so as to drive the household appliance to move through the movable caster assembly. After stopping the movement, the movable caster assembly can be retracted, and the telescopic feet assembly is adjusted to be level after contacting the ground, ensuring that the device immediately returns to a stable state. Without any additional operations, the movement and stability of the device can be realized, and thus the use scenarios of the household appliance can be seamlessly and stably switched.

[0025] In an alternative technical solution of the movable caster assembly of the above household appliance, the limiting structure abuts against the roller assembly, the limiting structure is arranged on the movable member, and the limiting structure and the guiding structure are located on opposite sides of the roller assembly.

[0026] In the case of adopting the above technical solution, when the movable member moves so that the guiding structure moves towards the roller assembly, since the limiting structure and the guiding structure are located on opposite sides of the roller assembly, the limiting structure can immediately disengage from the roller assembly, ensuring that the roller assembly can be freely deployed. With the effective guidance of the guiding structure, the rapid and accurate deployment operation of the roller assembly can be realized; when the movable member moves so that the guiding structure moves away from the roller assembly, the limiting structure gradually approaches and finally abuts against the roller assembly, ensuring the stable retraction of the roller assembly. At the same time, the guiding structure assists the roller assembly to return to the retracted position, ensuring the smoothness and stability of the operation.

[0027] In an alternative technical solution of the movable caster assembly of the above household appliance, the roller assembly includes a roller and a connecting member. One end of the connecting member is rotatably connected to the base through a rotating shaft, and the other end of the connecting member is rotatably connected to the roller. The limiting structure abuts against the connecting member and / or the rotating shaft.

[0028] In the case of adopting the above solution, concentrating the limiting function on the connecting member and / or the rotating shaft eliminates the need for an additional complex limiting mechanism, simplifies the overall design, and reduces the manufacturing cost and maintenance difficulty.

[0029] In an alternative technical solution of the movable caster assembly of the above household appliance, the guiding structure has an inclined surface, and the inclined surface inclines away from the roller assembly starting from the movable member.

[0030] On the other hand, the present application also provides a base mechanism for a household appliance. The base mechanism includes the movable caster assembly according to any one of the above embodiments and a feet assembly arranged on the movable caster assembly.

[0031] On the other hand, the present application also provides a household appliance, and the household appliance includes the above base mechanism. Description of the Drawings

[0032] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0033] Figure 1 is a schematic structural view of the bottom of the household appliance of the present application;

[0034] Figure 2 is a schematic structural view of the base mechanism of the household appliance of the present application;

[0035] Figure 3 is Figure 2 an enlarged view of part A in

[0036] Figure 4 is a front view of the base mechanism of the household appliance of the present application;

[0037] Figure 5 is a rear view of the base mechanism of the household appliance of the present application;

[0038] Figure 6 is a partial schematic structural view of the base mechanism of the household appliance of the present application;

[0039] Figure 7 is a schematic structural view of the telescopic foot assembly of the household appliance of the present application;

[0040] Figure 8 is Figure 7 an enlarged view of part B in

[0041] Explanation of reference numerals:

[0042] 1 - Movable caster assembly; 11 - Base; 111 - First bottom plate; 112 - First vertical plate; 113 - First structural part; 1131 - Avoidance groove; 1132 - First installation structure; 114 - Second structural part; 1141 - Second installation structure; 12 - Roller assembly; 121 - Roller; 122 - Connecting piece; 123 - Rotating shaft; 13 - Limiting structure; 14 - Movable part; 15 - Second vertical plate; 151 - Limiting hole; 16 - Guide structure; 161 - Inclined plane; 2 - Foot assembly; 21 - First foot; 211 - Support pad; 212 - First connection structure; 22 - Second foot; 221 - Hydraulic foot; 222 - Foot base; 2221 - Liquid channel; 223 - Adjusting foot; 2231 - Accommodation cavity; 224 - Telescopic cavity; 3 - Handle; 31 - First shaft; 32 - Second shaft; 4 - Connecting structure; 5 - Extension edge. Detailed embodiments

[0043] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present application and are not intended to limit the protection scope of the present application. Those skilled in the art can adjust them as needed to adapt to specific application scenarios.

[0044] It should be noted that in the description of the present application, the terms "upper" and "lower" refer to the upper and lower parts of the household appliance based on the height direction in the use state. "Front" refers to the direction close to the door based on the horizontal direction in the use state of the household appliance, and "rear" refers to the direction close to its back based on the horizontal direction in the use state of the household appliance. The width direction is the direction perpendicular to the front-rear direction of the household appliance. In addition, it should be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0045] The present application provides a household appliance, which can be a laundry treatment device such as a washing machine, a washer-dryer, a dryer, or a refrigerator, etc., and the present application does not limit this. For the convenience of description, the household appliance in the following text of the present application will be introduced by taking a washing machine as an example.

[0046] The washing machine of the present application includes a base mechanism, as Figures 1 to 6 shown, the base mechanism includes a moving caster assembly 1 and a foot component 2. The moving caster assembly 1 is arranged on the opposite sides of the base (also called the bottom plate) of the washing machine. The moving caster assembly 1 can be arranged along the front-rear direction of the washing machine, and is configured to be able to expand and retract. When retracted, the foot component 2 can support the washing machine. When expanded, the moving caster assembly 1 can drive the washing machine to move, such as being able to drive the washing machine to move in the front-rear direction.

[0047] Referring to Figures 1 to 3 , the moving caster assembly 1 of the present application includes a base 11 and a moving bracket wheel set. The moving bracket wheel set includes a roller assembly 12, a limiting structure 13, a moving member 14, and a guiding structure 16. The roller assembly 12 is rotatably arranged on the base 11, and has a retracted position close to the base 11 and an expanded position away from the base 11. The limiting structure 13 is used to limit the roller assembly 12 to the retracted position. The moving member 14 is movably arranged on the base 11. The guiding structure 16 is arranged on the moving member 14 and is used to move towards the roller assembly 12 under the drive of the moving member 14 to guide the roller assembly 12 to the expanded position. Among them, when the roller assembly 12 is in the expanded position, the roller assembly 12 can be separated from the limiting structure 13.

[0048] That is, when the washing machine does not need to be moved, the roller assembly 12 is in the retracted position, and the limiting structure 13 provides a limit for the roller assembly 12, so that the roller assembly 12 does not descend. In this case, the foot assembly 2 of the washing machine contacts the ground or other supporting surfaces, that is, the foot assembly 2 supports the washing machine, thereby ensuring the stable support of the washing machine. When the washing machine needs to be moved, the guiding structure 16 is driven by the moving member 14 to move towards the roller assembly 12, so that the guiding structure 16 guides the roller assembly 12 to the deployed position. In this case, the limiting structure 13 is separated from the roller assembly 12, ensuring the normal deployment of the roller assembly 12, and further enabling the movement of the washing machine. The above setting method does not require parts such as springs, and still can ensure the normal deployment and retraction of the moving caster assembly 1, thereby avoiding resonance noise during the operation of the washing machine.

[0049] Possibly, the base 11 includes a first bottom plate 111 and first vertical plates 112 provided on opposite sides of the first bottom plate 111. The first bottom plate 111 and the first vertical plates 112 on both sides enclose a guiding groove. The moving member 14 is configured as a moving plate, and the moving plate is movably arranged in the guiding groove, thereby limiting the moving direction of the moving plate to only reciprocate along the extending direction of the guiding groove, improving the stability of the moving caster assembly 1. Possibly, the roller assembly 12 includes a roller 121 and a connecting member 122. One end of the connecting member 122 is rotatably connected to the first vertical plate 112 through a rotating shaft 123, and the other end of the connecting member 122 is rotatably connected to the roller 121. Possibly, the guiding structure 16 on the moving plate has an inclined surface 161, and the inclined surface 161 inclines away from the roller assembly 12 starting from the moving plate. The limiting structure 13 can be provided on the moving plate. The limiting structure 13 and the guiding structure 16 are located on opposite sides of the roller assembly 12, and the limiting structure 13 abuts against the connecting member 122. Among them, the specific shape of the guiding structure 16 in this application is not limited and can be triangular pyramidal, wedge-shaped, etc.

[0050] That is, when the roller assembly 12 is in the retracted position, the limiting structure 13 abuts against the connecting member 122, restricting the relative rotation of the connecting member 122 and preventing the roller assembly 12 from descending. When the roller assembly 12 needs to be deployed, the moving plate is moved in the first direction, causing the limiting structure 13 to move away from the roller assembly 12, and the guiding structure 16 on the moving plate to move towards the roller assembly 12. When the inclined surface 161 on the guiding structure 16 reaches the roller 121, the roller 121 rolls from the side of the inclined surface 161 of the guiding structure 16 close to the moving plate to the other side of the inclined surface 161 away from the moving plate until the connecting member 122 finally abuts against the guiding structure 16, so that the roller assembly 12 is in the deployed position and the roller 121 is in contact with the ground or other supporting surfaces. At this time, the limiting structure 13 has separated from the connecting member 122 to release the limit. When the roller assembly 12 needs to be retracted, the moving plate is moved in the second direction opposite to the first direction. In this case, the roller 121 moves towards the moving plate along the inclined surface 161, and at the same time the connecting member 122 rotates towards the moving plate, and the limiting structure 13 abuts against the connecting member 122 again. At this time, the feet of the washing machine have already contacted the supporting surface, thus completing the retraction of the moving caster assembly 1.

[0051] Among them, the above-mentioned first direction can be the direction towards the front of the washing machine, and the above-mentioned second direction can be the direction towards the rear of the washing machine. In this case, the moving plate can reciprocate along the front-rear direction of the washing machine. It should be noted that this specific direction is only exemplary. For example, the first direction can also be the direction towards the rear of the washing machine, and the above-mentioned second direction can be the direction towards the front of the washing machine, etc.

[0052] Possibly, the connecting member 122 can be rod-shaped, and the number thereof can be two. The ends on the same side of the two connecting members 122 can be fixedly connected to the above-mentioned rotating shaft 123, for example, fixedly sleeved on the rotating shaft 123. The two ends of the rotating shaft 123 are respectively rotatably connected to the first vertical plates 112 on both sides. The roller 121 is located between the two connecting members 122 and is rotatably connected to the ends on the other side of the two connecting members 122. Or replace "the ends on the same side of the two connecting members 122 can be fixedly connected to the above-mentioned rotating shaft 123, and the two ends of the rotating shaft 123 are respectively rotatably connected to the first vertical plates 112 on both sides" with "the ends on the same side of the two connecting members 122 are rotatably connected to the rotating shaft 123, and the two ends of the rotating shaft 123 are respectively fixedly connected to the first vertical plates 112 on both sides". It can be understood that the above introduction is not restrictive. The connecting member 122 can also be plate-shaped with a shaft hole provided on one side for rotatably connecting to the vertical plate through the rotating shaft 123, and a rotating shaft 123 is provided on the other side for rotatably connecting to the roller 121, etc. Adjustments of these specific implementation manners do not deviate from the principle of the present application and are all within the protection scope of the present application. In addition, the number of the above-mentioned rod-shaped connecting members 122 is not fixed and can also be set to one, etc. Adjustments of these numbers do not deviate from the principle of the present application and are all within the protection scope of the present application.

[0053] As an alternative implementation manner, although the above is introduced by taking the limiting structure 13 abutted against the connecting member 122 as an example, this is not intended to limit the protection scope of the present application. For example, when the rotating shaft 123 is fixedly connected to the connecting member 122, the limiting structure 13 can be abutted against the rotating shaft 123. Of course, the connecting member 122 can also be abutted against the rotating shaft 123 and the connecting member 122 at the same time, etc. These adjustments do not deviate from the principle of the present application and are all within the protection scope of the present application. In addition, the limiting structure 13 can be not provided on the moving member 14. For example, the limiting structure 13 is provided on the first vertical plate 112 or the bottom plate, so that the limiting structure 13 can also be abutted against the roller 121, etc. These adjustments do not deviate from the principle of the present application and are all within the protection scope of the present application.

[0054] As a possible implementation manner, the limiting structure 13 is configured as a limiting protrusion protruding from the moving plate. When the connecting member 122 is rod-shaped, it can be provided in one-to-one correspondence with the connecting member 122, and the protrusion can be integrally formed on the moving member 14. Since the protrusion does not have elasticity, it limits the excessive movement of the component and reduces the transmission of vibration energy. Therefore, it will not resonate at a specific frequency like a spring, and can effectively avoid the noise problem caused by resonance. In addition, this structure is relatively simple and does not occupy too much extra space.

[0055] As a possible implementation, when both ends of the rotating shaft 123 are respectively connected to the first vertical plates 112 on both sides, the moving plate is arranged between the rotating shaft 123 and the bottom plate. Thereby, while ensuring the rotational stability of the roller assembly 12, it does not hinder the movement of the moving plate and can prevent the moving plate from falling when being impacted.

[0056] As a possible implementation, second vertical plates 15 are provided on opposite sides of the moving plate. Limiting holes 151 extending along the moving direction of the moving plate are provided on the second vertical plates 15, and the rotating shaft 123 is arranged in the limiting holes 151. Since the second vertical plates 15 are provided on opposite sides of the moving plate, a moving groove matching the shape of the guiding groove can be formed between the second vertical plates 15 and the moving plate. Frictional contact can be made between the walls of the moving groove and the guiding groove, thereby achieving smooth movement and avoiding shaking. Since the rotating shaft 123 is arranged in the limiting holes 151 and connected to the first vertical plates 112, the moving distance of the moving plate can be limited, the precise deployment and retraction of the roller assembly 12 can be realized, and since the moving groove can be limited to move only along the moving direction, there will be no up-and-down shaking.

[0057] As a possible implementation, guiding structures 16 and limiting structures 13 are provided on opposite sides in the length direction of the moving plate, and roller assemblies 12 located between the limiting structures 13 and the guiding structures 16 are provided on opposite sides in the length direction of the base 11, so that the moving caster assembly 1 can move smoothly when deployed.

[0058] It should be noted that the specific implementation manner in which the limiting structure 13 of the present application limits the roller assembly 12 to the retracted position and can be separated from the roller assembly 12 when the roller assembly 12 is in the deployed position is not fixed. For example, as an alternative implementation, a first magnetic attraction member is provided on the roller assembly 12, for example, the first magnetic attraction member is arranged on the connecting member 122, a second magnetic attraction member is provided on the moving member 14, and the first magnetic attraction member and the second magnetic attraction member attract each other to limit the roller assembly 12 to the retracted position. When the roller assembly 12 is in the deployed position, the roller assembly 12 is separated from the second magnetic attraction member to release the limit, etc. These adjustments do not deviate from the principle of the present application and are all within the protection scope of the present application.

[0059] In addition, the specific implementation of the roller assembly 12 can also be adjusted. As long as it is rotatably arranged on the base 11 and has a retracted position close to the base 11 and a deployed position away from the base 11, any adjustment to its specific implementation does not deviate from the principle of this application and is within the protection scope of this application. For example, the roller assembly 12 includes a moving rod and a roller 121. The roller 121 is rotatably arranged on the moving rod, and the moving rod is movably arranged relative to the base 11 in the height direction. For example, a guide groove extending in the height direction is provided on the base 11. An abutting strip is provided at the end of the moving rod away from the roller 121, and the end of the abutting strip is limited in the guide groove. The limiting structure 13 abuts against the abutting strip. When the guiding structure 16 moves towards the roller assembly 12, under the action of the inclined surface 161, it can drive the roller 121 to move away from the moving member 14 through the abutting strip and the moving rod, so that the roller assembly 12 is deployed and disengaged from the limit of the limiting structure 13.

[0060] As a possible implementation, the foot component 2 includes a telescopic foot component for automatically leveling the household appliance. Thus, when the user needs to move the washing machine, the moving caster assembly 1 can be deployed, and the household appliance can be driven to move through the moving caster assembly 1. After stopping the movement, the moving caster assembly 1 can be retracted. After the telescopic foot component contacts the ground, a leveling operation is performed to ensure that the device immediately returns to a stable state. Without any additional operation, the movement and stability of the device can be achieved, and thus the use scenarios of the washing machine can be seamlessly and stably switched.

[0061] As a possible implementation, the bottom of the washing machine has an extended edge 5 protruding therefrom. The extended edge 5 can be located on the side close to the washing machine door, that is, the front side of the washing machine, and the extended edge 5 can be arranged along the width direction of the washing machine. The extended edge 5 can be understood as the extended edge 5 extending downward from the bottom shell of the washing machine, or can also be understood as the extended edge 5 extending downward from the bottom side of the front shell of the washing machine, etc. The extended edge 5 can be fixedly connected to the base of the washing machine. For example, the base has a flanging, and after the flanging is fitted with the extended edge 5, they are fixedly connected by means such as bolt connection and welding, so as to enhance the structural strength of the washing machine and improve the overall stability. The extended edge 5 can also provide protection for the components at the bottom of the washing machine, effectively preventing damage or scratches to the bottom structure of the washing machine by external objects, and can also be used as a decorative panel, etc. A first structural part 113 is provided on the base 11 of the present application, and an avoidance groove 1131 is provided on the first structural part 113. The avoidance groove 1131 is used to accommodate the above-mentioned extended edge 5, that is, after the moving caster assembly 1 is installed on the washing machine, the avoidance groove 1131 also extends along the width direction of the washing machine. Possibly, the avoidance groove 1131 is formed by enclosing a bottom wall and side walls provided on both sides of the bottom wall. The avoidance groove 1131 can be an avoidance groove 1131 that penetrates through both sides to facilitate accommodating one side of the extended edge 5, or can also be an avoidance groove 1131 with one side blocked and the other side penetrating, etc.

[0062] Since an avoidance groove 1131 is provided on the first structural part 113 of the base 11 of the moving caster assembly 1 of the present application, and the extended edge 5 is arranged in the avoidance groove 1131, it can ensure that the moving caster assembly 1 is horizontally installed on the base, improving the stability of the washing machine during the moving process, avoiding the movement obstruction caused by inclination or instability, prolonging the service life of the washing machine, and at the same time improving the user experience. Therefore, the moving caster assembly 1 of the present application can enable the device to form bottom protection while also taking into account the moving stability.

[0063] As a possible implementation, a second structural part 114 is also provided on the base 11. The first structural part 113 and the second structural part 114 are located on opposite sides of the base 11. The bottom foot assembly 2 includes a first bottom foot 21 and a second bottom foot 22. A first installation structure 1132 for installing the first bottom foot 21 is provided on the first structural part 113, and a second installation structure 1141 for installing the second bottom foot 22 is provided on the second structural part 114. Among them, both the first structural part 113 and the second structural part 114 are preferably plate-like structures.

[0064] Since the first structural part 113 and the second structural part 114 are located on opposite sides of the base 11, after the first foot 21 is installed on the first structural part 113 and the second foot 22 is installed on the second structural part 114, the overall stability can be increased. In addition, the above setting method can also simplify the installation process of the feet and the caster assembly, improve the assembly efficiency. And improve the installation strength at the feet, which further enhances the overall connection strength between the caster assembly 1 and the washing machine base, making the caster assembly 1 more firmly installed, thereby improving the overall stability of the equipment. Especially under complex ground conditions or frequent movement, the equipment can always move smoothly.

[0065] As a possible implementation manner, the first mounting structure 1132 is disposed on the side of the first structural part 113 close to the moving support wheel set in the avoidance groove 1131. Since the first foot 21 is disposed on the first mounting structure 1132, the first foot 21 and the moving support wheel set can be located on the same side of the extension edge 5, so that the extension edge 5 can provide protection for both the first foot 21 and the moving support wheel set at the same time, improving the stability of the structure.

[0066] Possibly, the first mounting structure 1132 is configured as a first mounting hole, such as a round hole, a square hole, etc. The above-mentioned first foot 21 can be a fixed foot, and the fixed foot includes a support pad 211 and a first connection structure 212. The first connection structure 212 is connected to one side of the support pad 211. The first connection structure 212 passes through the first mounting hole and is connected to the base. The support pad 211 is used to contact a reference surface such as the ground. Among them, the first connection structure 212 can be a threaded rod. In this case, a fastening nut can be sleeved on the threaded rod, and the fastening nut fastens the first structural part 113 to the base. The first structural part 113 can act as a gasket to improve the connection stability. However, this is not restrictive, and its fastening method can be adjusted. For example, the first connection structure 212 is a connecting rod with a buckle structure. After the first connection structure 212 is fixed on the base, the buckle structure is clamped with the first structural part 113 to achieve fixation. These adjustments do not deviate from the principle of the present application and are all within the protection scope of the present application.

[0067] As a possible implementation, the second mounting structure 1141 is configured as a slotted hole which is arranged along the direction from the first structural part 113 to the second structural part 114, so that the position of the second foot 22 is adjustable. For example, when the first structural part 113 is located at the front side of the base and the second structural part 114 is located at the rear side of the base, the position of the second foot 22 can be adjusted back and forth relative to the washing machine, so that the adjustment of the foot position of washing machines with different depths can be realized, which is applicable to washing machines of different models, facilitating the transformation and upgrading of existing washing machines. Moreover, the arrangement of the extending direction of the slotted hole can ensure the stable support of the foot assembly for the washing machine at the same time. Wherein, fixing holes corresponding to the position of the slotted hole can be reserved on the base of the washing machine, which is convenient for installation. Possibly, the second foot 22 is configured as a telescopic foot in the telescopic foot assembly. A second connecting structure is connected to the telescopic foot, and the second connecting structure passes through the slotted hole and is connected to the base.

[0068] Since the first foot 21 arranged on one side of the extending edge 5 is a fixed foot, the stability of the foot structure on this side can be ensured, and it will not be damaged due to excessive force. At the same time, the telescopic feet on the other side can be automatically adjusted according to the ground conditions to ensure the uniform force of the entire bottom structure and reduce the risk of damage. In addition, the first foot 21 is designed to be non-adjustable, which can provide a stable foundation for the equipment. Especially at the front side position, it can effectively prevent the front end of the equipment from shaking or tilting during use. The telescopic feet on the opposite side provide flexibility and can adjust the height according to actual needs, enabling the equipment to operate smoothly in various scenarios.

[0069] The possible implementations of the telescopic foot assembly will be introduced below.

[0070] Possibly, as Figure 7 and Figure 8 shown, the telescopic foot assembly includes a communicating structure 4 and at least two telescopic feet. The telescopic foot includes a foot base 222, an adjusting foot 223 and a telescopic cavity 224. The foot base 222 is mounted on the second structural part 114 and sleeved on the adjusting foot 223. The adjusting foot 223 is movably arranged along the height direction. The adjusting foot 223 has a receiving cavity 2231. The telescopic cavity 224 is arranged in the receiving cavity 2231 and is configured to drive the adjusting foot 223 to move. The telescopic cavities 224 of at least two telescopic feet are communicated through the communicating structure 4. The communicating structure 4 can be a pipe or a combination of a pipe and a liquid storage tank that are interconnected, etc. Wherein, the telescopic cavity 224 can be a corrugated cavity made of a flexible material. The flexible material can be rubber, etc., and it can be fixed or contact-connected with the inner wall corresponding to the receiving cavity 2231 and abutted against the foot base 222. However, this is not restrictive. The telescopic cavity 224 can also be a rubber bladder, etc.

[0071] Among them, the telescopic cavity 224 can be filled with a hydraulic medium. Under the action of pressure, the hydraulic medium can flow between the interconnected telescopic cavities 224. When the ground is uneven, different pressures are generated due to the unevenness. The fluidity of the hydraulic medium enables adaptive adjustment of the telescopic length between the telescopic cavities 224, thereby driving the adjusting feet 223 to perform adaptive telescopic movement relative to the bottom foot seat 222. After the hydraulic medium stops flowing, automatic leveling of the telescopic feet can be achieved.

[0072] The way that the respective telescopic cavities 224 are connected through the connection structure 4 can be as follows: each bottom foot seat 222 is provided with a liquid passage 2221, each telescopic cavity 224 has a liquid through port, the liquid through port of each telescopic foot is connected to one end of the liquid passage 2221, and the other ends of the liquid passages 2221 of each telescopic foot are connected through the connection structure 4. Possibly, an installation groove is formed inside the bottom foot seat 222, a first limiting ring protruding inward is provided at the notch of the installation groove, and a second limiting ring is provided on the outer wall of the adjusting foot 223. The second limiting ring is located above the first limiting ring so that the first limiting ring provides a limit to prevent the adjusting foot 223 from falling off.

[0073] Among them, the number and positions of the strip holes for installing the telescopic feet can be adjusted according to actual application situations. For example, when the bottom foot seat 222 is square, connection holes can be provided at the four corners of the bottom foot seat 222. In this case, the strip holes can be provided on the opposite sides of the second structural part 114. The strip holes on one side correspond to two connection holes on one side of the bottom foot seat 222, and the strip holes on the other side correspond to two connection holes on the other side of the bottom foot seat 222. Then, bolts or screws are sequentially passed through the corresponding connection holes and strip holes and connected to the base. Another example is when connection holes are provided in the middle of the opposite sides of the bottom foot seat 222, only one strip hole can be provided, and then bolts or screws are sequentially passed through the corresponding connection holes and strip holes and connected to the base. In addition, positioning holes can also be provided on the second structural part 114 to pre-position the telescopic feet before connection, improving accuracy.

[0074] It should be noted that although the telescopic feet of the present application are described by taking the hydraulic feet 221 as an example, this is not intended to limit the protection scope of the present application. As long as the telescopic feet have the function of automatic leveling, they can be any existing or future possible structures. For example, the telescopic feet are configured as electric telescopic feet, that is, the feet are driven to expand and contract through a motor and a transmission component. The motor can be a small DC motor or a stepping motor. The motor is installed at a specific position at the bottom of the washing machine, and its stability is ensured through a fixed bracket. The output shaft of the motor is connected to the transmission component. The transmission component can be a gear set or a lead screw nut mechanism. If it is a lead screw nut mechanism, the motor drives the lead screw to rotate, and the nut is connected to the feet. As the lead screw rotates, the nut moves up and down along the lead screw, thereby driving the feet to expand and contract. In order to achieve the automatic leveling function, corresponding control circuits and sensors can be equipped. The sensors can detect the level state of the washing machine, such as gyroscopes, acceleration sensors, etc. These sensors transmit information such as the tilt angle of the washing machine to the control circuit. The control circuit judges whether the washing machine is in a level state according to the signals of the sensors, and controls the operation of the motor to adjust the length of the feet until the washing machine reaches a level state.

[0075] The possible driving methods of the moving member 14 will be introduced below.

[0076] The moving member 14 can be mechanically manually driven or automatically driven. When it is manually driven, the mobile caster assembly 1 can also include a handle 3 and a driving structure. The handle 3 drives the moving member 14 to reciprocate through the driving structure. The driving structure can be a link mechanism, a cam mechanism, a rack and pinion mechanism, a crank mechanism, etc. Taking a possible embodiment as an example for illustration, the driving structure is provided on one side of the handle 3 and can be integrally formed with the handle 3. It includes a main body and a first connecting portion and a second connecting portion provided on the main body. The first connecting portion is rotatably connected to the first structural portion 113 through a first shaft 31. A limiting hole is provided on the moving plate, and a second shaft 32 is provided on the second connecting portion. The second shaft 32 is movably disposed in the limiting hole. Thus, after the handle 3 rotates a certain angle, the moving plate can be driven to move in the first direction, thereby realizing the unfolding of the roller assembly 12. After the handle 3 rotates in the reverse direction by a certain angle, the moving plate can be driven to move in a second direction opposite to the first direction, thereby realizing the retraction of the roller assembly 12. Among them, the handle 3 can be located on the side of the first structural portion 113 away from the moving support wheel set in the avoidance groove 1131, so that it can be not blocked by the extending edge 5, which is convenient for the user to perform manual driving. When using automatic driving, the moving member 14 can be driven by an electric push rod or a cylinder, etc.

[0077] As an alternative embodiment, the specific structural form of the base 11 of the present application is not fixed and can be adjusted. For example, the base 11 includes a bottom plate and a support arm provided on the bottom plate, and the roller assembly 12 is rotatably connected to the support arm, etc. These adjustments do not deviate from the principle of the present application and are within the protection scope of the present application.

[0078] As an alternative embodiment, the specific form of the guiding structure 16 is not fixed. As long as it can guide the roller assembly 12 to the unfolded position, its specific form can be adjusted. For example, the guiding structure 16 can be an arc-shaped guiding structure 16, a roller 121 - type guiding structure 16, or other structures with guiding functions. These adjustments of the specific forms do not deviate from the basic principle of the present application and belong to the protection scope of the present application.

[0079] As an alternative embodiment, although the moving member 14 of the present application is introduced by taking the moving plate as an example, this is not intended to limit the protection scope of the present application. It can be any possible structure as long as it can be movably arranged on the base 11.

[0080] As an alternative embodiment, although the present application is introduced by taking the mobile caster assemblies 1 provided on the opposite sides of the base of the washing machine as an example, this is not restrictive. For example, the mobile caster assemblies 1 can be arranged in the middle of the base, and four sets of roller assemblies 12 of the mobile caster assemblies 1 can be provided. For example, two sets of roller assemblies 12 distributed at intervals are arranged at the front side, and two sets of roller assemblies 12 distributed at intervals are arranged at the rear side, and a limiting structure 13 and a guiding structure 16 are arranged at the corresponding positions of each roller assembly 12. These adjustments do not deviate from the principle of the present application and are within the protection scope of the present application.

[0081] As an alternative embodiment, the specific structural form of the avoidance groove is not fixed. As long as it can avoid the extension edge, its specific structural form can be adjusted. For example, the avoidance groove is configured as a stepped groove, etc. It can be understood that the stepped groove includes a first body and a second body. The first body is bent downward relative to the base, and the second body is bent away from the base relative to the first body. The extension edge is provided at the first body and the second body. These adjustments do not deviate from the principle of the present application and are within the protection scope of the present application.

[0082] As an alternative embodiment, the specific forms of the first mounting structure and the second mounting structure of the present application are not fixed. For example, the first mounting structure and the second mounting structure are configured as clamping grooves, etc. The first bottom feet and the second bottom feet are connected to the base of the washing machine through the corresponding clamping grooves. These adjustments do not deviate from the principle of the present application and are within the protection scope of the present application.

[0083] As an alternative embodiment, the specific structural form of the mobile support wheel set of the present application is not fixed and can be any existing or future possible structure. For example, the mobile support wheel set includes a guiding structure, a mobile support, and a mobile wheel set. The guiding structure is fixed to the base, and the guiding structure has an inclined surface with one side close to the base and the other side away from the base. The mobile support is movably arranged on the base, the mobile wheel set is installed on the mobile support, and the mobile support is provided with a guiding structure, which is arranged to be able to move away from the base along the inclined surface when the mobile support moves in a preset direction, so that the mobile support wheel set is in an unfolded state. The present application does not limit the specific shape of the guiding structure, which can be a triangular pyramid, a wedge, etc. The guiding structure can be a chute adapted to the inclined surface or a rotating shaft on the mobile wheel set, etc. It can be understood that the preset direction is along the direction close to the inclined surface.

[0084] When the mobile support wheel set is in a retracted state, the mobile support can be detachably installed on the base, such as by clamping, or a contact structure is provided on the base to abut against the mobile support, etc. At this time, the bottom foot assembly supports on the ground; when it is necessary to move the washing machine, under the drive of the mobile support, the guiding structure moves towards the inclined surface of the guiding structure. Under the cooperation of the guiding structure such as the chute on the mobile support and the inclined surface, the mobile support drops, and the mobile wheel set supports on the ground, so that the washing machine can be driven to move.

[0085] As an alternative embodiment, although the present application is introduced by taking the avoidance groove accommodating the extension edge as an example, this is not intended to limit the protection scope of the present application. The present application can omit the setting of the extension edge, and the avoidance groove can also be replaced by other avoidance structures, as long as it can avoid the bottom structure of the household appliance. The bottom structure to be avoided can be a claw, a wire, a pipeline or a groove, etc. The avoidance structure can be an elastic deformation member such as elastic rubber or a telescopic rod with adjustable height, etc. These adjustments do not deviate from the principle of the present application and are all within the protection scope of the present application.

[0086] Possibly, the avoidance structure can be replaced by a cushion block. The cushion block is arranged at the bottom of the household appliance, and the base is pressed on the cushion block to effectively avoid the obstacles at the bottom and facilitate the installation of the mobile caster assembly. The number of cushion blocks can be one or more. When there are multiple cushion blocks, they can be spaced apart and distributed at the bottom of the household appliance. The material of the cushion block can be a deformable material such as rubber material. These adjustments do not deviate from the principle of the present application and are all within the protection scope of the present application.

[0087] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present 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 fall within the protection scope of the present application.

Claims

1. A mobile caster assembly for a household appliance, characterized in that, The mobile caster assembly includes: A base provided at the bottom of the household appliance. A first structural part is provided on the base, and an avoidance structure is provided on the first structural part. A mobile support wheel set provided on the base and configured to drive the household appliance to move.

2. The mobile caster assembly of the household appliance according to claim 1, wherein The avoidance structure is configured as an avoidance groove. An extended edge protruding from the bottom of the household appliance is provided, and the avoidance groove is used to accommodate the extended edge. The avoidance groove is formed by enclosing a bottom wall and side walls provided on both sides of the bottom wall, or the avoidance groove is configured as a stepped groove.

3. The mobile caster assembly of the household appliance according to claim 1, wherein The mobile support wheel set is configured to be able to be deployed and retracted. When retracted, the bottom foot assembly of the household appliance can support the household appliance, and when deployed, it can drive the household appliance to move.

4. The mobile caster assembly of the household appliance according to claim 3, wherein A second structural part is further provided on the base. The first structural part and the second structural part are located on opposite sides of the base. The bottom foot assembly includes a first bottom foot and a second bottom foot. A first mounting structure for mounting the first bottom foot is provided on the first structural part, and a second mounting structure for mounting the second bottom foot is provided on the second structural part.

5. The mobile caster assembly of the household appliance according to claim 4, wherein The avoidance structure is configured as an avoidance groove, and the first mounting structure is provided on the side of the first structural part close to the mobile support wheel set in the avoidance groove.

6. The mobile caster assembly of the household appliance according to claim 4 or 5, wherein The second mounting structure is configured as a strip-shaped hole, and the strip-shaped hole is arranged in the direction from the first structural part to the second structural part so that the position of the second bottom foot is adjustable.

7. The mobile caster assembly of the household appliance according to claim 6, The first mounting structure is configured as a first mounting hole. The first bottom foot includes a support pad and a first connection structure. The first connection structure is connected to one side of the support pad. The first connection structure passes through the first mounting hole and is connected to the bottom of the household appliance; and / or The second bottom foot is configured as a telescopic bottom foot in a telescopic bottom foot assembly for automatically leveling the household appliance. A second connection structure is connected to the telescopic bottom foot, and the second connection structure passes through the strip-shaped hole and is connected to the bottom of the household appliance.

8. The mobile caster assembly of the household appliance according to claim 3, wherein The mobile support wheel set includes: A roller assembly rotatably provided on the base, having a retracted position close to the base and an extended position away from the base; A limiting structure for limiting the roller assembly to the retracted position; A moving member movably provided on the base; A guiding structure, which is provided on the moving member and is used to move towards the roller assembly under the drive of the moving member so as to guide the roller assembly to the deployed position; Wherein, when the roller assembly is in the deployed position, the roller assembly can be separated from the limiting structure; and / or The bottom foot assembly includes a telescopic bottom foot assembly, and the telescopic bottom foot assembly is arranged to automatically level the household appliance.

9. A base mechanism of a household appliance, characterized in that, The base mechanism includes the moving caster assembly according to any one of claims 1 to 8, and further includes a bottom foot assembly provided on the moving caster assembly.

10. A household appliance, characterized in that The household appliance includes the base mechanism according to claim 9.

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