Trundle lifting mechanism for household appliance and household appliance system

Abstract

The utility model relates to the technical field of household appliances, in particular to a caster lifting mechanism for a household appliance and a household appliance system, and aims to solve the problem that a nested structure of a base of the caster lifting mechanism is large in vibration and noise when a washing machine works. In order to achieve the purpose, the caster lifting mechanism comprises a base, the base comprises a first support, a second support and a connecting structure, the second support is movably connected with the first support and can extend out of the first support, and the connecting structure is arranged to be capable of fixedly connecting the first support and the second support; the rolling wheel assembly is arranged at the bottom of the base and can be unfolded and folded, and the castor lifting mechanism is arranged to enable the rolling wheel assembly to support the household appliance when the rolling wheel assembly is unfolded. According to the trundle lifting mechanism, the first support and the second support can be prevented from generating relative displacement when the household appliance works to generate vibration, and then vibration and noise generated by collision or friction are avoided.

Description

Technical Field

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

[0002] As an indispensable home appliance in modern families, washing machines have improved people's quality of life. With the diversification of usage scenarios, how to make washing machines more efficient and convenient to serve the needs of different families has become a new challenge.

[0003] To facilitate easy movement of the washing machine, adjustable casters are installed at the bottom. When the washing machine needs to be moved, the casters are lowered to contact the ground for easy pushing; when the washing machine is not needed, the casters are raised and retracted, allowing the washing machine to be stably placed on the ground. In a previously undisclosed application, the casters are connected to the washing machine via a base. To accommodate washing machines of different sizes, the base is designed with a nested structure to adjust its size. However, this nested structure generates significant vibration and noise when the washing machine vibrates during operation. Utility Model Content

[0004] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem of excessive vibration and noise in the nested structure of the base of the caster lifting mechanism when the washing machine is working.

[0005] In a first aspect, the present invention provides a caster lifting mechanism for a household appliance, the caster lifting mechanism comprising: a base, the base including a first bracket, a second bracket and a connecting structure, the second bracket being movably connected to the first bracket and capable of extending beyond the first bracket, the connecting structure being configured to fixably connect the first bracket and the second bracket; and a roller assembly disposed at the bottom of the base and configured to be able to unfold and retract, the caster lifting mechanism being configured to enable the roller assembly to support the household appliance when the roller assembly is unfolded.

[0006] When the above technical solution is adopted, the roller assembly is used to unfold and support the household appliance when it needs to be moved, so as to facilitate the movement. After the appliance is moved into place, the roller assembly is retracted. Since the second bracket can be moved outside the first bracket, the overall length of the base can be adjusted by moving the second bracket and adjusting the relative position of the second bracket and the first bracket to suit household appliances of different sizes. After the length of the base is adjusted to the correct position, the first bracket and the second bracket are fixed by the connecting structure, which can prevent the relative displacement of the first bracket and the second bracket when the household appliance vibrates during operation, thereby avoiding vibration and noise caused by collision or friction.

[0007] In the specific embodiment of the caster lifting mechanism for household appliances described above, the connecting structure includes an elastic claw and a plurality of first slots. The elastic claw is disposed on the first bracket and abuts against the second bracket. The first slots are disposed on the second bracket, and the elastic claw can engage with the first slots. Alternatively, the connecting structure includes a buckle and a plurality of second slots. The buckle is rotatably connected to the second bracket and can be opened and closed. The second slots are disposed on the first bracket. When the second bracket is opened, it disengages from the second slots; when the second bracket is closed, it engages with the second slots.

[0008] With the above technical solution, the elastic claw abuts against the second bracket, allowing the second bracket to move relative to the first bracket. During this movement, the elastic claw engages with multiple first slots. When the second bracket is in position, the elastic claw engages with one of the first slots, thus fixing the first and second brackets in place. This prevents relative displacement between the first and second brackets when the household appliance vibrates, thereby avoiding vibration and noise caused by collisions or friction. When adjusting the relative position of the second and first brackets, the latch is rotated to open, allowing the second bracket to move relative to the first bracket. After adjustment, the latch is rotated to close, engaging with the second slot, thus fixing the first and second brackets in place. This again prevents relative displacement between the first and second brackets when the household appliance vibrates, thus avoiding vibration and noise caused by collisions or friction.

[0009] In the specific embodiment of the caster lifting mechanism for household appliances described above, the connecting structure includes a first connecting rod and a nut. The first bracket is provided with a first connecting hole, and the second bracket is provided with a second connecting hole. The first connecting hole and / or the second connecting hole are strip-shaped holes. The first connecting rod is provided with an external thread. The first connecting rod passes through the first connecting hole and the second connecting hole and is connected to the nut through the external thread. And / or the second bracket is a telescopic structure.

[0010] With the above technical solution, the first and second brackets can be fixed by the threaded connection between the first connecting rod and the nut, preventing relative displacement between the first and second brackets when the household appliance vibrates during operation. This avoids vibration and noise caused by collision or friction. By setting the first mounting hole and / or the second mounting hole as a strip-shaped hole, the first and second mounting holes can overlap over a long range of movement when the second bracket moves, allowing the first connecting rod to pass through both holes simultaneously to fix the first and second brackets. By setting the second bracket as a telescopic structure, the adjustable length of the base can be further increased, thereby expanding the applicability of the caster lifting mechanism.

[0011] In the specific embodiment of the caster lifting mechanism for household appliances described above, the first bracket includes a first top plate, and the two opposite sides of the first top plate extend downward to form a first side plate; the second bracket includes a second top plate, and the two opposite sides of the second top plate extend downward to form a second side plate. The second top plate and the second side plates on both sides surround each other to form a second sliding groove. The first bracket and the second sliding groove are movably connected, and the two opposite sides of the second side plate press against the first side plate.

[0012] With the above technical solution, the structure of the first and second supports can improve the strength of the first and second supports. At the same time, the second slide provides guidance and limit for the movement of the second support. By pressing the first side plate of the first support with the second side plate on the opposite side of the second support, the contact surfaces of the second side plate and the first side plate can be kept in close contact, avoiding the vibration and noise caused by the collision between the first and second side plates when the household appliance is working. In addition, it can also ensure that the second support moves smoothly relative to the first support, avoiding the noise caused by the collision between the second support and the first support.

[0013] In the specific embodiment of the caster lifting mechanism for household appliances described above, a second connecting rod is provided on the second side plate, and a third connecting hole is provided on the first side plate. The third connecting hole is a strip-shaped hole, and the second connecting rod is movably connected to the third connecting hole.

[0014] When the above technical solution is adopted, the third connecting hole can provide guidance for the movement of the second connecting rod, and thus provide guidance for the movement of the second bracket, so that the second bracket can move smoothly relative to the first bracket.

[0015] In the specific embodiment of the caster lifting mechanism for household appliances described above, a first pressing structure is sleeved on the second connecting rod. The first pressing structure is used to provide a force for the first top plate to adhere to the second top plate.

[0016] When the above technical solution is adopted, the first pressing structure provides a force for the first top plate to adhere to the second top plate, so that the first top plate and the second top plate can remain in contact, avoiding the vibration and noise caused by the collision between the first top plate and the second top plate when the household appliance is working.

[0017] In the specific embodiment of the caster lifting mechanism for household appliances described above, the caster lifting mechanism further includes a first base and a second base, wherein the first base is connected to the first bracket and the second base is connected to the second bracket.

[0018] When the above technical solution is adopted, the roller assembly provides stable support for the household appliance through the first base and the second base when it is retracted. Since the first base is connected to the first bracket and the second base is connected to the second bracket, the distance between the second base and the first base can change with the movement of the second bracket to suit household appliances of different sizes and provide them with stable support.

[0019] In the specific embodiment of the caster lifting mechanism for household appliances described above, the caster lifting mechanism further includes a movable bracket, the roller assembly includes a roller and a connecting arm, one end of the connecting arm is rotatably connected to the first bracket via a first connecting shaft, and the other end of the connecting arm is rotatably connected to the roller via a second connecting shaft. The movable bracket is configured to move along the first bracket to drive the connecting arm to rotate, and to abut against the roller assembly after the roller assembly is unfolded.

[0020] When the above technical solution is adopted, the moving bracket drives the connecting arm to rotate, which in turn drives the roller to descend, so as to realize the unfolding of the roller assembly. After the roller assembly is unfolded, the moving bracket abuts against the roller assembly to ensure that the roller assembly can support the household appliance and facilitate the movement of the household appliance.

[0021] In the specific embodiment of the caster lifting mechanism for household appliances described above, the first bracket includes a first top plate, two opposite sides of the first top plate extending downward to form first side plates, the first top plate and the first side plates on both sides forming a first sliding groove, and the movable bracket being movably connected to the first sliding groove; the movable bracket includes a third top plate, the third top plate extending downward to form a third side plate, the third side plate having an inclined groove, the first side plate having a cut, and the second connecting shaft being disposed within the inclined groove and the cut; and / or the caster lifting mechanism further includes a handle structure, the handle structure including a handle portion and a first connecting portion and a second connecting portion disposed on the handle portion, the first connecting portion being rotatably connected to the first bracket via a third connecting shaft, the second connecting portion having a fourth connecting shaft, the movable bracket having a guide hole, and the fourth connecting shaft being rotatably and movably disposed within the guide hole.

[0022] With the above technical solution, the first slide groove can provide a limit for the movement of the movable bracket, while the structure of the first bracket can improve its strength, reduce the risk of deformation, and improve the stability of the caster lifting mechanism; the structure of the movable bracket can also improve its strength. When it is necessary to move the household appliance, the movable bracket is moved within the first slide groove so that the second connecting shaft abuts against the inclined surface of the inclined groove. As the movable bracket continues to move, the inclined groove pushes the second connecting shaft downward from the cut, thereby causing the connecting arm to rotate and unfold, and causing the roller to move downward. When the user holds the handle, the handle structure can be rotated, causing the handle structure to rotate around the third connecting shaft, which in turn causes the fourth connecting shaft to rotate and move within the guide hole, thereby causing the movable bracket to reciprocate along the first bracket.

[0023] In a second aspect, the present invention also provides a household appliance system, the household appliance system including a household appliance and a wheel lifting mechanism, wherein the base is installed at the bottom of the household appliance.

[0024] Compared with the prior art, the beneficial effects of the caster lifting mechanism for household appliances provided by this utility model are as follows: the roller assembly is used to unfold and support the household appliance when it needs to be moved, so as to facilitate movement. After being moved into place, the roller assembly is retracted. Since the second bracket can be moved outside the first bracket, the overall length of the base can be adjusted by moving the second bracket and adjusting the relative position of the second bracket and the first bracket to suit household appliances of different sizes. After the length of the base is adjusted to the correct position, the first bracket and the second bracket are fixed by the connecting structure, which can prevent the relative displacement of the first bracket and the second bracket when the household appliance vibrates during operation, thereby avoiding vibration and noise caused by collision or friction. Attached Figure Description

[0025] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0026] Figure 1 This is a structural schematic diagram of the caster lifting mechanism of this utility model;

[0027] Figure 2 This is a structural schematic diagram of the caster lifting mechanism of this utility model from another angle;

[0028] Figure 3 This is a schematic diagram of the caster lifting mechanism of this utility model installed at the bottom of the washing machine;

[0029] Figure 4 This is a schematic diagram of the connection structure of this utility model;

[0030] Figure 5 This is a schematic diagram of one embodiment of the connection structure of this utility model;

[0031] Figure 6 This is a schematic diagram of another embodiment of the connection structure of this utility model;

[0032] Figure 7 This is a cross-sectional view of the caster lifting mechanism of this utility model;

[0033] Figure 8 This is a schematic diagram of the structure of the first base of this utility model.

[0034] Figure label:

[0035] 1-Base, 2-Roller assembly, 3-Moving bracket, 4-Handle structure, 5-First base, 6-Second base, 7-Washing machine, 11-First bracket, 12-Second bracket, 13-Connecting structure, 21-Roller, 22-Connecting arm, 23-First connecting shaft, 24-Second connecting shaft, 25-Second pressing structure, 31-Third top plate, 32-Third side plate, 33-Sloping groove, 34-Guide hole, 35-Fourth connecting hole, 41-Handle part, 42-First connecting part, 43-Second connecting part, 44-Third connecting shaft, 45-Fourth connecting shaft, 61- 62-Adjustable foot, 63-Telescopic cavity, 64-Connecting structure, 111-First connecting hole, 112-First top plate, 113-First side plate, 114-Third connecting hole, 115-Slit, 116-Groove, 121-Second connecting hole, 122-Second top plate, 123-Second side plate, 124-Second connecting rod, 125-First pressing structure, 131-Elastic claw, 132-First slot, 133-Snap, 134-Second slot, 135-First connecting rod, 136-Nut, 611-Liquid channel, 621-Receiving cavity. Detailed Implementation

[0036] Some embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0037] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the relevant device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] Furthermore, it should be noted that in the description of this utility model, ordinal numbers such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In addition, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Based on the background art, the existing technology of nested base structures for caster lifting mechanisms suffers from excessive vibration and noise during washing machine operation. The aim is to address this issue by using a roller assembly. When the appliance needs to be moved, the roller assembly can be unfolded to support it, facilitating movement. Once in position, the roller assembly can be retracted. Since the second bracket can move outside the first bracket, adjusting its relative position to the first bracket allows for adjustment of the overall length of the base to accommodate appliances of different sizes. After the base length is adjusted, the first and second brackets are fixed by a connecting structure. This prevents relative displacement between the first and second brackets when the appliance vibrates during operation, thus avoiding vibration and noise caused by collisions or friction.

[0040] First refer to Figures 1-3This utility model provides a caster lifting mechanism for household appliances. The caster lifting mechanism includes a base 1 and a roller assembly 2. The base 1 includes a first bracket 11, a second bracket 12 and a connecting structure 13. The second bracket 12 is movably connected to the first bracket 11 and can extend beyond the first bracket 11. The connecting structure 13 is configured to fixably connect the first bracket 11 and the second bracket 12. The roller assembly 2 is located at the bottom of the base 1 and is configured to be able to unfold and retract. The caster lifting mechanism is configured to enable the roller assembly 2 to support the household appliance when it is unfolded. Based on the above structural configuration, the roller assembly 2 is used to unfold and support the household appliance when it needs to be moved, so as to facilitate movement. After being moved into place, the roller assembly 2 is retracted. Since the second bracket 12 can be moved outside the first bracket 11, the overall length of the base 1 can be adjusted by moving the second bracket 12 and adjusting the relative position of the second bracket 12 and the first bracket 11 to suit household appliances of different sizes. After the length of the base 1 is adjusted to the correct position, the first bracket 11 and the second bracket 12 are fixed by the connecting structure 13, which can prevent the relative displacement of the first bracket 11 and the second bracket 12 when the household appliance vibrates during operation, thereby avoiding vibration and noise caused by collision or friction.

[0041] The "bottom" mentioned above refers to the bottom of the household appliance when it is in use, after the caster lifting mechanism is connected to the household appliance.

[0042] It should be noted that the household appliance of this utility model can be a washing machine 7, a washer-dryer combo, or a dryer, or a refrigerator, etc. For ease of explanation, the following description will use the washing machine 7 as an example. In the following text, "upper" and "lower" refer to the upper and lower parts of the washing machine 7 with a vertical plane as the reference when in use; "front" refers to the direction of the washing machine 7 near the door with a horizontal plane as the reference when in use; "rear" refers to the direction of the washing machine 7 near the back opposite the door with a horizontal plane as the reference when in use; "left" refers to the left side of the washing machine 7 when the user stands directly in front of it and faces it; and "right" refers to the right side of the washing machine 7 when the user stands directly in front of it and faces it.

[0043] The number of roller assemblies 2 can be adjusted according to the number of caster lifting mechanisms, as long as the roller assemblies 2 can stably support the washing machine 7 when unfolded and facilitate the movement of the washing machine 7. As one possible implementation, caster lifting mechanisms are installed on the left and right sides of the bottom of the washing machine 7, and the length direction of the caster lifting mechanisms is arranged along the front and rear direction of the washing machine 7. Each caster lifting mechanism is equipped with two roller assemblies 2.

[0044] See below. Figures 1-4In one or more embodiments, the connecting structure 13 includes an elastic claw 131 and a plurality of first slots 132. The elastic claw 131 is disposed on the first bracket 11 and abuts against the second bracket 12. The first slots 132 are disposed on the second bracket 12, and the elastic claw 131 can engage with the first slots 132. Based on the above structural configuration, by the elastic claw 131 abutting against the second bracket 12, during the movement of the second bracket 12 relative to the first bracket 11, the elastic claw 131 can engage with the plurality of first slots 132 respectively. When the second bracket 12 moves into place, the elastic claw 131 engages with one of the first slots 132, thereby fixing the first bracket 11 and the second bracket 12, preventing relative displacement between the first bracket 11 and the second bracket 12 when the washing machine 7 vibrates during operation, and thus avoiding vibration and noise caused by collision or friction.

[0045] Regarding the structure of the elastic jaw 131, it may include a jaw arm and a jaw head. The jaw arm is made of an elastic material to ensure that the jaw head can always abut against the second bracket 12. Alternatively, the jaw arm may be made of a non-elastic material. A spring is provided between the jaw arm and the first bracket 11. The spring is used to provide a force to the jaw arm toward the first bracket 11 to ensure that the jaw head can always abut against the second bracket 12.

[0046] It should be noted that the elastic claw 131 can also be provided on the second bracket 12, and the first slot 132 can be provided on the first bracket 11, as long as the elastic claw 131 can engage with the first slot 132.

[0047] See below. Figures 1-3 ,as well as Figure 5 In one or more embodiments, the connecting structure 13 includes a buckle 133 and a plurality of second slots 134. The buckle 133 is rotatably connected to the second bracket 12 and can be opened and closed. The second slots 134 are disposed on the first bracket 11. When the second bracket 12 is opened, it disengages from the second slots 134; when the second bracket 12 is closed, it engages with the second slots 134. Based on the above structural configuration, when it is necessary to adjust the relative position of the second bracket 12 and the first bracket 11, the buckle 133 is rotated to open, and the second bracket 12 can move relative to the first bracket 11. After adjustment, the buckle 133 is rotated to close, and the buckle 133 engages with the second slots 134, thereby fixing the first bracket 11 and the second bracket 12. This prevents the first bracket 11 and the second bracket 12 from relative displacement when the washing machine 7 vibrates during operation, thereby preventing vibration and noise caused by collision or friction.

[0048] It should be noted that the buckle 133 can also be set on the first bracket 11, and the second slot 134 can be set on the second bracket 12, as long as the buckle 133 can be engaged with the second slot 134.

[0049] See below. Figures 1-3 ,as well as Figure 6 In one or more embodiments, the connecting structure 13 includes a first connecting rod 135 and a nut 136. A first connecting hole 111 is provided on the first bracket 11, and a second connecting hole 121 is provided on the second bracket 12. The first connecting hole 111 and / or the second connecting hole 121 are strip-shaped holes. The first connecting rod 135 has external threads, and the first connecting rod 135 passes through the first connecting hole 111 and the second connecting hole 121 to connect with the nut 136 via the external threads. Based on the above structural configuration, the threaded connection between the first connecting rod 135 and the nut 136 can fix the first bracket 11 and the second bracket 12, preventing relative displacement between the first bracket 11 and the second bracket 12 when the washing machine 7 vibrates during operation, thereby avoiding vibration and noise caused by collision or friction. By setting the first mounting hole and / or the second mounting hole as strip-shaped holes, when the second bracket 12 moves, the first mounting hole and the second mounting hole can overlap within a long range of movement, so that the first connecting rod 135 can simultaneously pass through the first mounting hole and the second mounting hole to fix the first bracket 11 and the second bracket 12.

[0050] The first connecting rod 135 can be a bolt, a stud, or other rod-shaped structure, as long as the first connecting rod 135 has external threads that can be threadedly connected to the nut 136.

[0051] It should be noted that the first connecting rod 135 and the nut 136 can be separate structures. After the second bracket 12 is moved into place, the first connecting rod 135 and the nut 136 are then connected to the first bracket 11 and the second bracket 12. When the first mounting hole is a strip-shaped hole and the second mounting hole is a round hole, the nut 136 can be connected to the second bracket 12 as a single unit by welding or bonding. The nut 136 is coaxial with the second mounting hole. After the second bracket 12 is moved into place, the first connecting rod 135 is passed through the first bracket 11 and the second bracket 12 and connected to the nut 136. Alternatively, the first connecting rod 135 can be passed through the second mounting hole and connected to the second bracket 12 by welding or bonding. The first bracket 11 can be connected as one unit. After the second bracket 12 is moved into place, the nut 136 is then connected to the first connecting rod 135. If the second mounting hole is a strip hole and the first mounting hole is a round hole, the nut 136 can be connected to the first bracket 11 as one unit by welding or bonding. The nut 136 is coaxial with the first mounting hole. After the second bracket 12 is moved into place, the first connecting rod 135 is then passed through the first bracket 11 and the second bracket 12 and connected to the nut 136. Alternatively, the first connecting rod 135 can be passed through the first mounting hole and connected to the first bracket 11 as one unit by welding or bonding. After the second bracket 12 is moved into place, the nut 136 is then connected to the first connecting rod 135.

[0052] Regarding the specific structure of the connecting structure 13, in addition to the above-described embodiments, other structures can also be used, as long as the first bracket 11 and the second bracket 12 can be fixed by the connecting structure 13 after the length of the base 1 is adjusted to the correct position. Those skilled in the art can make adjustments as needed.

[0053] Continue reading Figure 2 In one or more embodiments, the second bracket 12 is a telescopic structure. Based on the above structural configuration, by making the second bracket 12 a telescopic structure, the adjustable length of the base 1 can be further increased, thereby increasing the applicability of the caster lifting mechanism.

[0054] Regarding the retractable structure of the second support 12, it can be a nested structure of multiple supports or other existing retractable structures, which are not specifically limited here.

[0055] See below. Figures 1-3 In one or more embodiments, the first support 11 includes a first top plate 112, and the two opposite sides of the first top plate 112 extend downward to form first side plates 113; the second support 12 includes a second top plate 122, and the two opposite sides of the second top plate 122 extend downward to form second side plates 123. The second top plate 122 and the two side plates 123 on both sides surround to form a second sliding groove. The first support 11 is movably connected to the second sliding groove, and the two opposite side plates 123 press against the first side plate 113. Based on the above structural configuration, the structure of the first support 11 and the second support 12 can improve the strength of the first support 11 and the second support 12. At the same time, the second slide provides guidance and limit for the movement of the second support 12. The second side plate 123 on the opposite side of the second support 12 presses against the first side plate 113 of the first support 11, so that the contact surfaces of the second side plate 123 and the first side plate 113 can remain in contact, avoiding the first side plate 113 and the second side plate 123 from colliding with each other and generating vibration and noise when the washing machine 7 vibrates during operation. In addition, it can also ensure that the second support 12 moves smoothly relative to the first support 11 when it moves, avoiding the second support 12 and the first support 11 from colliding with each other and generating noise.

[0056] It should be noted that when the first support 11 includes a first top plate 112, and the two opposite sides of the first top plate 112 extend downward to form a first side plate 113, and the second support 12 includes a second top plate 122, and the two opposite sides of the second top plate 122 extend downward to form a second side plate 123, the elastic claw 131 and the first slot 132 can be respectively provided on the first side plate 113 and the second side plate 123 or respectively provided on the first top plate 112 and the second top plate 122. The buckle 133 and the second slot 134 can also be respectively provided on the second side plate 123 and the first side plate 113 or respectively provided on the second top plate 122 and the first top plate 112.

[0057] Optionally, the second side plate 123 is provided with a second connecting rod 124, and the first side plate 113 is provided with a third connecting hole 114. The third connecting hole 114 is a strip-shaped hole, and the second connecting rod 124 is movably connected within the third connecting hole 114. Based on the above structural configuration, the third connecting hole 114 can provide guidance for the movement of the second connecting rod 124, and thus provide guidance for the movement of the second bracket 12, so that the second bracket 12 can move smoothly relative to the first bracket 11.

[0058] It should be noted that when both the second connecting rod 124 and the first slot 132 are provided on the second side plate 123, the second connecting rod 124 and the second slot 134 can be arranged vertically on the second side plate 123.

[0059] Optionally, a first pressing structure 125 is fitted onto the second connecting rod 124. The first pressing structure 125 is used to provide a force for the first top plate 112 to adhere to the second top plate 122. Based on the above structural configuration, the first pressing structure 125 provides a force for the first top plate 112 to adhere to the second top plate 122, so that the first top plate 112 and the second top plate 122 can remain in contact, avoiding the first top plate 112 and the second top plate 122 from colliding and causing vibration and noise when the washing machine 7 vibrates during operation.

[0060] It should be noted that the first pressing structure 125 can be a torsion spring, with both ends of the torsion spring abutting against the bottom of the first top plate 112; the first pressing structure 125 can also be a hollow cylinder or other structure with elasticity, which can be adjusted as needed by those skilled in the art.

[0061] See below. Figures 1-3 ,as well as Figure 7 In one or more embodiments, the caster lifting mechanism further includes a movable support 3, and the roller assembly 2 includes a roller 21 and a connecting arm 22. One end of the connecting arm 22 is rotatably connected to the first support 11 via a first connecting shaft 23, and the other end of the connecting arm 22 is rotatably connected to the roller 21 via a second connecting shaft 24. The movable support 3 is configured to move along the first support 11 to drive the connecting arm 22 to rotate, and abuts against the roller assembly 2 after the roller assembly 2 is unfolded. Based on the above structural configuration, the movable support 3 moves to drive the connecting arm 22 to rotate, thereby driving the roller 21 to descend, so as to realize the unfolding of the roller assembly 2. After the roller assembly 2 is unfolded, the movable support 3 abuts against the roller assembly 2 to ensure that the roller assembly 2 can support the washing machine 7 and facilitate the movement of the washing machine 7.

[0062] Optionally, when the first support 11 includes a first top plate 112, and the two opposite sides of the first top plate 112 extend downward to form first side plates 113, the first top plate 112 and the first side plates 113 on both sides surround to form a first sliding groove, and the movable support 3 is movably connected to the first sliding groove; the movable support 3 includes a third top plate 31, the third top plate 31 extends downward to form a third side plate 32, the third side plate 32 is provided with an inclined groove 33, the first side plate 113 is provided with a cut 115, and the second connecting shaft 24 is provided in the inclined groove 33 and in the cut 115. Based on the above structural configuration, the first slide groove can provide a limit for the movement of the movable bracket 3, while the structure of the first bracket 11 can improve the strength of the first bracket 11, reduce the risk of deformation of the first bracket 11, and improve the stability of the caster lifting mechanism; the structure of the movable bracket 3 can improve the strength of the movable bracket 3; when it is necessary to move the washing machine 7, the movable bracket 3 is driven to move in the first slide groove so that the second connecting shaft 24 abuts against the inclined surface of the inclined groove 33. As the movable bracket 3 continues to move, the inclined groove 33 pushes the second connecting shaft 24 to move downward from the cut 115, thereby driving the connecting arm 22 to rotate and unfold, and driving the roller 21 to move downward.

[0063] Possibly, the first connecting shaft 23 is fitted with a second pressing structure 25. The second pressing structure 25 is used to provide a force for the third top plate 31 to adhere to the first top plate 112, thereby pressing the second top plate 122 onto the first top plate 112 and avoiding problems such as resonance noise. The second pressing structure 25 can be a torsion spring, with both ends of the torsion spring abutting against the bottom of the third top plate 31. The second pressing structure 25 can also be a structure with elasticity, such as a hollow cylinder.

[0064] Possibly, the third side plate 32 is provided with a fourth connecting hole 35, which is a strip-shaped hole through which the first connecting shaft 23 passes and connects to the first side plate 113. Based on the above structural configuration, when the movable bracket 3 moves, the first connecting shaft 23 moves within the fourth connecting hole 35, and the movement of the first connecting shaft 23 is limited by the fourth connecting hole 35, thereby limiting the movement of the movable bracket 3.

[0065] Furthermore, the caster lifting mechanism also includes a handle structure 4, which includes a handle portion 41 and a first connecting portion 42 and a second connecting portion 43 disposed on the handle portion 41. The first connecting portion 42 is rotatably connected to the first bracket 11 via a third connecting shaft 44. The second connecting portion 43 is provided with a fourth connecting shaft 45, and the movable bracket 3 is provided with a guide hole 34. The fourth connecting shaft 45 is rotatably and movably disposed within the guide hole 34. Based on the above structural configuration, when the user grips the handle portion 41, the handle structure 4 can be rotated. The handle structure 4 rotates around the third connecting shaft 44, causing the fourth connecting shaft 45 to rotate and move within the guide hole 34, thereby causing the movable bracket 3 to reciprocate along the first bracket 11. The first slide groove can provide a limit for the movement of the movable bracket 3, while the structure of the first bracket 11 can improve the strength of the first bracket 11, reduce the risk of deformation of the first bracket 11, and improve the stability of the caster lifting mechanism.

[0066] Those skilled in the art will understand that the handle structure 4 can be omitted, and the user can move the movable support 3 by using tools or by manually driving it.

[0067] Possibly, the top of the first bracket 11 is provided with a groove 116 to accommodate downwardly protruding structures such as the extended edge of the bottom of the washing machine 7, ensuring that the first bracket 11 can be installed with the bottom of the washing machine 7. The extended edge is located on the front side of the washing machine 7 and is arranged along the left-right width direction of the washing machine 7. The extended edge can be formed by extending downward from the bottom of the front panel of the washing machine 7, or it can be fixedly connected to the bottom of the washing machine 7 to enhance the structural strength of the washing machine 7, provide protection for components at the bottom of the washing machine 7, or serve as a visual enhancement panel.

[0068] See below. Figures 1-3 ,as well as Figure 8 In one or more embodiments, the caster lifting mechanism further includes a first base 5 and a second base 6. The first base 5 is connected to the first bracket 11, and the second base 6 is connected to the second bracket 12. Based on the above structural configuration, when the roller assembly 2 retracts, it provides stable support for the washing machine 7 through the first base 5 and the second base 6. Since the first base 5 is connected to the first bracket 11 and the second base 6 is connected to the second bracket 12, the distance between the second base 6 and the first base 5 can change as the second bracket 12 moves to accommodate washing machines 7 of different sizes and provide them with stable support.

[0069] The first foot 5 can be a fixed foot, and the second foot 6 is a telescopic foot. The telescopic foot is used to automatically level the washing machine 7. Compared with feet that adjust height by rotation, the telescopic foot does not require manual operation, making leveling simple, convenient, and effective. Furthermore, the washing machine 7 can automatically level itself after each movement, facilitating its movement. The fixed foot provides stable support for the washing machine 7. The fixed foot passes through the first bracket 11 and is threaded to the bottom of the washing machine 7. The height of the fixed foot extending beyond the washing machine 7 can be adjusted by rotating it. Those skilled in the art will understand that the first foot 5 can also be a telescopic foot, and the second foot 6 a fixed foot; or both the first foot 5 and the second foot 6 can be telescopic feet or both can be fixed feet.

[0070] Regarding the specific structure of the telescopic feet, the telescopic feet may include a foot base 61, an adjusting foot 62, and a telescopic cavity 63. The foot base 61 is mounted on the second mounting part and sleeved over the adjusting foot 62. The adjusting foot 62 is axially movable along the foot base 61 and has a receiving cavity 621. The telescopic cavity 63 is disposed in the receiving cavity 621 and configured to drive the adjusting foot 62 to move. The telescopic cavities 63 of at least two telescopic feet are connected by a connecting structure 64. The connecting structure 64 can be a pipe, or it can be an interconnected pipe and a liquid storage tank, etc. The telescopic cavity 63 can be a corrugated cavity made of flexible material, but this is not a limitation; the telescopic cavity 63 can also be a rubber bladder, etc. The telescopic cavity 63 can be fixed or contacted with the inner wall corresponding to the receiving cavity 621 and abut against the foot base 61.

[0071] The telescopic cavities 63 can be filled with hydraulic medium. Under pressure, the hydraulic medium can flow between the interconnected telescopic cavities 63. When the ground is uneven, the washing machine 7 is initially not level, and the forces applied to the telescopic feet are also different. The fluidity of the hydraulic medium allows the telescopic cavities 63 to adaptively adjust and extend, thereby causing the adjusting feet 62 to adaptively extend and extend relative to the foot bases 61. After the washing machine 7 is leveled, the forces applied to the telescopic feet are the same, the hydraulic medium stops flowing, and it provides stable support for the washing machine 7. The telescopic cavities 63 are connected by a connecting structure 64. Each foot base 61 is provided with a liquid channel 611, and each telescopic cavity 63 has a liquid inlet. The liquid inlet of each telescopic foot is connected to one end of the liquid channel 611, and the other end of the liquid channel 611 of each telescopic foot is connected through the connecting structure 64.

[0072] It should be noted that although the telescopic foot of this utility model is described using a hydraulic foot as an example, this is not intended to limit the scope of protection of this utility model. As long as the telescopic foot has an automatic leveling function, it can be any existing or future structure.

[0073] Continue reading Figure 2 and Figure 3 On the other hand, the present invention also provides a household appliance system, which includes a household appliance and a caster lifting mechanism of any of the above embodiments, with the base 1 installed at the bottom of the household appliance.

[0074] It should be noted that the above embodiments are only used to illustrate the principle of this utility model and are not intended to limit the scope of protection of this utility model. Without departing from the principle of this utility model, those skilled in the art can adjust the above embodiments so that this utility model can be applied to more specific application scenarios.

[0075] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, 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 protection scope of this utility model.

Claims

1. A caster lifting mechanism for household appliances, characterized in that, The caster lifting mechanism includes: The base (1) includes a first support (11), a second support (12) and a connecting structure (13). The second support (12) is movably connected to the first support (11) and can extend outside the first support (11). The connecting structure (13) is configured to fixably connect the first support (11) and the second support (12). A roller assembly (2) is located at the bottom of the base (1) and is configured to be able to be unfolded and retracted. The caster lifting mechanism is configured to enable the roller assembly (2) to support the household appliance when the roller assembly (2) is unfolded.

2. The caster lifting mechanism for household appliances according to claim 1, characterized in that, The connecting structure (13) includes an elastic claw (131) and a plurality of first slots (132). The elastic claw (131) is disposed on the first bracket (11) and abuts against the second bracket (12). The first slots (132) are disposed on the second bracket (12). The elastic claw (131) can engage with the first slots (132); and / or The connection structure (13) includes a buckle (133) and a plurality of second slots (134). The buckle (133) is rotatably connected to the second bracket (12) and can be opened and closed. The second slots (134) are provided on the first bracket (11). When the second bracket (12) is opened, it disengages from the second slots (134). When the second bracket (12) is closed, it engages with the second slots (134).

3. The caster lifting mechanism for household appliances according to claim 1, characterized in that, The connecting structure (13) includes a first connecting rod (135) and a nut (136). The first bracket (11) has a first connecting hole (111), and the second bracket (12) has a second connecting hole (121). The first connecting hole (111) and / or the second connecting hole (121) are strip-shaped holes. The first connecting rod (135) has an external thread. The first connecting rod (135) passes through the first connecting hole (111) and the second connecting hole (121) and is connected to the nut (136) through the external thread; and / or The second support (12) is a telescopic structure.

4. The caster lifting mechanism for household appliances according to claim 1, characterized in that, The first support (11) includes a first top plate (112), and the two opposite sides of the first top plate (112) extend downward to form first side plates (113); The second support (12) includes a second top plate (122), and the two sides of the second top plate (122) extend downward to form second side plates (123). The second top plate (122) and the two sides of the second side plates (123) surround each other to form a second sliding groove. The first support (11) is movably connected to the second sliding groove, and the two sides of the second side plates (123) press against the first side plate (113).

5. The caster lifting mechanism for household appliances according to claim 4, characterized in that, The second side plate (123) is provided with a second connecting rod (124), and the first side plate (113) is provided with a third connecting hole (114). The third connecting hole (114) is a strip-shaped hole, and the second connecting rod (124) is movably connected to the third connecting hole (114).

6. The caster lifting mechanism for household appliances according to claim 5, characterized in that, The second connecting rod (124) is fitted with a first pressing structure (125), which is used to provide the first top plate (112) with a force to adhere to the second top plate (122).

7. The caster lifting mechanism for household appliances according to claim 1, characterized in that, The caster lifting mechanism also includes a first base (5) and a second base (6), the first base (5) being connected to the first bracket (11) and the second base (6) being connected to the second bracket (12).

8. The caster lifting mechanism for household appliances according to claim 1, characterized in that, The caster lifting mechanism also includes a movable bracket (3). The roller assembly (2) includes a roller (21) and a connecting arm (22). One end of the connecting arm (22) is rotatably connected to the first bracket (11) via a first connecting shaft (23). The other end of the connecting arm (22) is rotatably connected to the roller (21) via a second connecting shaft (24). The movable bracket (3) is configured to move along the first bracket (11) to drive the connecting arm (22) to rotate, and to abut against the roller assembly (2) after the roller assembly (2) is unfolded.

9. The caster lifting mechanism for household appliances according to claim 8, characterized in that, The first support (11) includes a first top plate (112), and the two sides of the first top plate (112) extend downward to form first side plates (113). The first top plate (112) and the first side plates (113) on both sides surround to form a first sliding groove. The movable support (3) is movably connected to the first sliding groove. The movable support (3) includes a third top plate (31), which extends downward to form a third side plate (32). The third side plate (32) has a groove (33), and the first side plate (113) has a cut (115). The second connecting shaft (24) is located in the groove (33) and in the cut (115); and / or The caster lifting mechanism also includes a handle structure (4), which includes a handle portion (41) and a first connecting portion (42) and a second connecting portion (43) provided on the handle portion (41). The first connecting portion (42) is rotatably connected to the first bracket (11) via a third connecting shaft (44). The second connecting portion (43) is provided with a fourth connecting shaft (45). The movable bracket (3) is provided with a guide hole (34). The fourth connecting shaft (45) is rotatably and movably provided in the guide hole (34).

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

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