Caster lifting mechanisms and home appliance systems for household appliances

Abstract

This utility model relates to the field of household appliance technology, specifically providing a caster lifting mechanism and system for household appliances, aiming to solve the problem of how to avoid gaps between the base and the bottom of the washing machine. To this end, the caster lifting mechanism of this utility model includes: a base, the base including a first bracket and a first mounting part, the first mounting part being located on a first side of the first bracket and inclined upwards, the first mounting part being used to connect to the bottom of the household appliance; and a roller assembly, the roller assembly being located at the bottom of the base and configured to be able to unfold and retract, the caster lifting mechanism being configured to allow the roller assembly to support the household appliance when unfolded. The first mounting part of the caster lifting mechanism of this utility model forms an upwardly bent structure with the first bracket, so that after the first mounting part is connected to the household appliance, the bent structure forces the first bracket to fit and abut against the bottom of the household appliance.

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 make contact with the ground for easy pushing; when the washing machine does not need to be moved, the casters are raised and retracted, allowing the washing machine to be stably placed on the ground by its feet.

[0004] In a prior application that has not yet been published, the casters are connected to the washing machine via a base. However, due to the limitations of the washing machine's bottom structure, the connection between the base and the washing machine is usually located on one side of the base along its length. This results in a gap between the opposite side and the bottom of the washing machine. Especially when the washing machine is heavy, the bottom of the washing machine usually has a very small gap with the ground in order to ensure shock absorption. The gap between the side of the base that is not connected to the washing machine and the washing machine can cause the gap between the base and the ground to become smaller or even come into contact. As a result, when the washing machine vibrates during operation, the base is prone to collide with the bottom of the washing machine or the ground, resulting in additional vibration and noise. It can also affect the normal use of the caster lifting mechanism. Utility Model Content

[0005] The present invention aims to solve the above-mentioned technical problem, namely, how to avoid the gap between the base and the bottom of the washing machine.

[0006] 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 and a first mounting portion, the first mounting portion being disposed on a first side of the first bracket and inclined upward, the first mounting portion being used to connect to the bottom of the household appliance; and a roller assembly, the roller assembly being 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.

[0007] 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. By setting the first mounting part on the first side of the first bracket and tilting it upward, the first mounting part and the first bracket are not on the same plane and form an upward bending structure. During the process of connecting the first mounting part to the bottom of the household appliance, before the first mounting part is installed in place, the second side of the first bracket opposite to the first side has already contacted the bottom of the household appliance. As the contact area between the first mounting part and the bottom of the household appliance increases, the upward bending structure is gradually flattened or tends to flatten, forcing the first bracket to fit and abut against the bottom of the household appliance. The abutting force makes it difficult for the second side of the first bracket to separate from the bottom of the household appliance and form a gap during the use of the caster lifting mechanism. This avoids the vibration of the household appliance during operation, which may cause the first bracket to collide with the bottom of the household appliance and / or the placement surface of the household appliance (such as the ground), causing additional vibration and noise. At the same time, it avoids affecting the normal use of the caster lifting mechanism and improves the user experience.

[0008] In the specific embodiment of the caster lifting mechanism for household appliances described above, a first reinforcing structure is provided at the connection between the first mounting part and the first bracket.

[0009] When the above technical solution is adopted, the first reinforcing structure is used to improve the connection strength between the first mounting part and the first bracket, avoid deformation at the connection between the first mounting part and the first bracket, and further prevent the second side of the first bracket from separating from the bottom of the household appliance to form a gap.

[0010] In the specific embodiment of the caster lifting mechanism for household appliances described above, the first reinforcing structure is configured as a reinforcing rib.

[0011] When the above technical solution is adopted, the reinforcing rib can significantly improve the bending and torsional resistance of the connection between the first mounting part and the first bracket, while dispersing stress and preventing deformation at this point.

[0012] In the specific embodiment of the caster lifting mechanism for household appliances described above, the base further includes a second bracket, which is movably connected to the first bracket and can extend beyond the first bracket.

[0013] By adopting the above technical solution, the overall length of the base can be adjusted by moving the second bracket and adjusting its relative position to the first bracket, so as to be suitable for household appliances of different sizes.

[0014] In the specific embodiment of the caster lifting mechanism for household appliances described above, the base further includes a second mounting part, which is disposed on the first side of the second bracket and tilted upwards. The second mounting part is used to connect with the bottom of the household appliance.

[0015] When the above technical solution is adopted, the base is connected to the bottom of the household appliance through the first mounting part and the second mounting part, which can improve the stability of the base installation, especially when the base is long. The second mounting part is located on the first side of the second bracket and tilts upward, so that the second side of the second bracket is not easy to separate from the bottom of the household appliance and form a gap. This avoids the second bracket and the entire base from colliding with the bottom of the household appliance and / or the placement surface of the household appliance due to vibration when the household appliance is working, which would cause additional vibration and noise. At the same time, it avoids affecting the normal use of the caster lifting mechanism and improves the user experience.

[0016] 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. The first base is connected to the bottom of the household appliance through the first mounting part, and the second base is connected to the bottom of the household appliance through the second mounting part.

[0017] 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 mounting part and the second base is connected to the second mounting part, 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.

[0018] In the specific embodiment of the caster lifting mechanism for household appliances described above, the top of the first bracket is provided with a protruding structure, which abuts against the bottom of the household appliance.

[0019] By adopting the above technical solution, the protruding structure at the top of the first bracket abuts against the bottom of the household appliance, which can prevent the first bracket from being suspended and deformed by the bottom of the household appliance. This ensures the normal use of the roller assembly, such as ensuring that the roller assembly can support the household appliance when it is unfolded, and ensuring the normal unfolding and retraction of the roller assembly, thus improving the stability of use. It can also prevent the base from deforming due to vibration during movement and reduce the noise generated by the collision between the first bracket and the bottom of the household appliance.

[0020] In the specific embodiment of the caster lifting mechanism for household appliances described above, the caster lifting mechanism further includes a movable bracket, which is movably connected to the first bracket and configured to push the roller assembly to unfold. The first side is located to the side of the moving path of the movable bracket or its extension line.

[0021] When the above technical solution is adopted, the movement of the movable bracket relative to the first bracket drives the roller assembly to unfold, which facilitates the movement of household appliances. The first side is located on the side of the movement path of the movable bracket or its extension line, so that the arrangement of the first mounting part will not affect the movement of the movable bracket, and will not increase the overall length of the base.

[0022] In the specific embodiment of the caster lifting mechanism for household appliances described above, the caster lifting mechanism further includes a handle structure, which is rotatably connected to the first bracket and is configured to drive the movable bracket to reciprocate along the first bracket when the handle structure is rotated.

[0023] When the above technical solution is adopted, the rotating handle structure can drive the movable support to move back and forth relative to the first support.

[0024] In the specific embodiment of the caster lifting mechanism for household appliances described above, the handle structure has an extension arm, the extension arm is provided with a locking structure, the movable bracket is provided with a slot, and the handle structure is configured such that when the roller assembly is extended, the locking structure engages with the slot, and when the roller assembly is retracted, the locking structure disengages from the slot.

[0025] When the above technical solution is adopted, the handle structure is rotated to drive the moving bracket to move. After the roller assembly is unfolded, the extension arm rotates with the handle structure, so that the locking structure engages with the slot, fixing the roller assembly in the unfolded state. This prevents the roller assembly from being pressed back due to the weight of the household appliance. After the household appliance is moved into place, the locking structure is disengaged from the slot, and the handle structure is rotated in the opposite direction to retract the roller assembly.

[0026] In the specific embodiment of the caster lifting mechanism for household appliances described above, the handle structure includes a handle portion and a connecting portion connected to the handle portion. The connecting portion is rotatably connected to the first bracket via a third connecting shaft. A fourth connecting shaft is provided on the connecting portion. A guide hole is provided on the movable bracket. The fourth connecting shaft is rotatably and movably disposed within the guide hole.

[0027] When the above technical solution is adopted, the user can hold the handle and rotate the connecting part. The connecting part rotates around the third connecting shaft, which in turn drives the fourth connecting shaft to rotate and move in the guide hole, thereby driving the moving bracket to move back and forth along the first bracket.

[0028] In the specific embodiment of the caster lifting mechanism for household appliances described above, the handle and the connecting part are rotatably connected via a fifth connecting shaft, and are configured to be able to rotate to a folded position and an operating position.

[0029] With the above technical solution, the handle can be rotated to the operating position when needed, which in turn drives the connecting part to rotate and thus moves the movable bracket. When the handle is not needed, it can be rotated to the folding position, which effectively reduces the overall space occupied by the caster lifting mechanism and the packaging size during transportation. When the caster lifting mechanism is installed on a household appliance as a whole, it can also reduce the overall space occupied and the overall packaging size during transportation.

[0030] In the specific embodiment of the caster lifting mechanism for household appliances described above, the connecting part is provided with a connecting groove, a portion of the handle is rotatably connected to the connecting groove, the handle abuts against the side wall of the connecting groove when rotated to the operating position, a gasket is provided between the handle and the bottom inner wall of the connecting groove, and the gasket is sleeved on the fifth connecting shaft; and / or the handle abuts against the first bracket when rotated to the folding position.

[0031] When the above technical solution is adopted, the handle is stopped from rotating to the operating position by abutting against the side wall of the connecting groove. In this position, the handle can drive the connecting part to rotate, thereby driving the movable bracket to move. Since the handle is rotatably connected to the connecting part through the fifth connecting shaft, there is a gap between the handle and the fifth connecting shaft, which makes the handle prone to tilting downward under the action of gravity. By placing a gasket between the handle and the bottom inner wall of the connecting groove, the downward tilting of the handle can be prevented, thereby preventing the handle from contacting the placement surface of the household appliance. The handle is stopped from rotating to the folding position by abutting against the first bracket.

[0032] In the specific embodiment of the caster lifting mechanism for household appliances described above, a shock-absorbing pad is provided on the top of the handle.

[0033] When the above technical solution is adopted, the shock-absorbing pad is used to prevent the handle from making rigid contact with the bottom of the household appliance when vibration occurs during the use of the appliance, thereby reducing vibration and noise.

[0034] In the specific embodiment of the caster lifting mechanism for household appliances described above, 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 bottom of the movable bracket has a guide block, and the bottom of the guide block has an inclined surface. The movable bracket is configured such that when it moves along the first bracket, the inclined surface abuts against the roller to push the connecting arm to rotate.

[0035] When the above technical solution is adopted, the movement of the movable bracket causes the guide block to move, thereby pushing the roller to descend and driving the connecting arm to rotate, so as to realize the unfolding of the roller assembly, thereby supporting the household appliance and facilitating its movement. After the household appliance is moved into place, it drives the movable bracket to move in the opposite direction. Since the roller assembly supports the household appliance at this time, the roller abuts against the inclined surface of the guide block under the gravity of the household appliance and moves upward, thereby driving the connecting arm to rotate and retract.

[0036] In a second aspect, the present invention also provides a household appliance system, characterized in that the household appliance system includes a household appliance and a caster lifting mechanism, and the first mounting part is mounted on the bottom of the household appliance.

[0037] 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 the appliance is moved into place, the roller assembly is retracted. By setting the first mounting part on the first side of the first bracket and tilting it upward, the first mounting part and the first bracket are not on the same plane and form an upward bending structure. During the process of connecting the first mounting part with the bottom of the household appliance, before the first mounting part is installed in place, the second side of the first bracket opposite to the first side has already contacted the bottom of the household appliance. As the contact area between the first mounting part and the bottom of the household appliance increases, the upward bending structure is gradually flattened or tends to flatten, forcing the first bracket to fit and abut against the bottom of the household appliance. The abutting force makes it difficult for the second side of the first bracket to separate from the bottom of the household appliance and form a gap during the use of the caster lifting mechanism. This avoids the vibration of the household appliance during operation, which causes the first bracket to collide with the bottom of the household appliance and / or the placement surface of the household appliance (such as the ground), causing additional vibration and noise. At the same time, it avoids affecting the normal use of the caster lifting mechanism and improves the user experience. Attached Figure Description

[0038] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0039] Figure 1 This is a schematic diagram of the caster lifting mechanism of this utility model installed at the bottom of the washing machine;

[0040] Figure 2 This is a top view of the caster lifting mechanism of this utility model;

[0041] Figure 3 yes Figure 2 AA section view;

[0042] Figure 4 yes Figure 2 BB section view;

[0043] Figure 5 This is an isometric drawing of the caster lifting mechanism of this utility model;

[0044] Figure 6 This is a bottom view of the caster lifting mechanism of this utility model;

[0045] Figure 7 This is an isometric view of the caster lifting mechanism of this utility model from another angle;

[0046] Figure 8 yes Figure 2 The left view.

[0047] Figure label:

[0048] 1-Base, 2-Roller assembly, 3-First base, 4-Second base, 5-Protruding structure, 6-Moving bracket, 7-Handle structure, 8-Washing machine, 11-First bracket, 12-First mounting part, 13-First reinforcing structure, 14-Second bracket, 15-Second mounting part, 21-Roller, 22-Connecting arm, 23-First connecting shaft, 24-Second connecting shaft, 61-Slot, 62-Guide block, 63-Third top plate, 6 4-Third side plate, 65-Push section, 66-Bending section, 67-Third reinforcing structure, 71-Extension arm, 72-Snap-fit ​​structure, 73-Handle part, 74-Connecting part, 75-Third connecting shaft, 76-Fourth connecting shaft, 77-Fifth connecting shaft, 78-Plastic sleeve, 111-First top plate, 112-First side plate, 113-Groove, 114-Protrusion, 141-Bottom plate, 142-Second side plate, 741-Connecting groove. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] See appendix Figures 1-8 This 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 and a first mounting part 12. The first mounting part 12 is located on the first side of the first bracket 11 and tilts upwards. The first mounting part 12 is used to connect to the bottom of the household appliance. 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 allow 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 is necessary to move it, so as to facilitate movement. After moving it to the correct position, the roller assembly 2 is retracted. By placing the first mounting part 12 on the first side of the first bracket 11 and tilting it upwards, the first mounting part 12 and the first bracket 11 are not on the same plane and form an upwardly bent structure. The specific bending situation is as follows: Figure 3As shown, during the process of connecting the first mounting part 12 to the bottom of the household appliance, before the first mounting part 12 is fully installed, the second side of the first bracket 11, which is opposite to the first side, has already contacted the bottom of the household appliance. As the contact area between the first mounting part 12 and the bottom of the household appliance increases, the upwardly bent structure is gradually flattened or tends to flatten, forcing the first bracket 11 to fit and abut against the bottom of the household appliance. The abutting force makes it difficult for the second side of the first bracket 11 to separate from the bottom of the household appliance and form a gap during the use of the caster lifting mechanism. This avoids the first bracket 11 from colliding with the bottom of the household appliance and / or the placement surface of the household appliance (such as the ground) caused by the vibration of the household appliance during operation, thus preventing additional vibration and noise. At the same time, it avoids affecting the normal use of the caster lifting mechanism and improves the user experience.

[0053] The "bottom" mentioned above refers to the bottom of the appliance when it is in use, after the caster lifting mechanism is connected to the appliance. The "placement surface" mentioned above can be the ground or other surfaces, such as the upper surface of a cabinet or platform, as long as there is a surface suitable for placing the appliance.

[0054] It should be noted that the household appliance of this utility model can be a washing machine 8, a washer-dryer combo, or a dryer, or a refrigerator, etc. For ease of explanation, the following description will use the washing machine 8 as an example. In the following text, "upper" and "lower" refer to the upper and lower parts of the washing machine 8 in its operating state, based on a vertical plane; "front" refers to the direction of the washing machine 8 near the door in its operating state, based on a horizontal plane; "rear" refers to the direction of the washing machine 8 near the back opposite the door in its operating state, based on a horizontal plane; "left" refers to the left side when the user stands directly in front of the washing machine 8 and faces it; and "right" refers to the right side when the user stands directly in front of the washing machine 8 and faces it. The bottom of the washing machine 8 can be equipped with one or more caster lifting mechanisms, as long as they facilitate the movement of the washing machine 8.

[0055] like Figure 1 and Figure 3 As shown, in one or more embodiments, a first reinforcing structure 13 is provided at the connection between the first mounting part 12 and the first bracket 11. Based on the above structural configuration, the first reinforcing structure 13 is used to improve the connection strength between the first mounting part 12 and the first bracket 11, prevent deformation at the connection between the first mounting part 12 and the first bracket 11, and further prevent the second side of the first bracket 11 from separating from the bottom of the washing machine 8 and forming a gap.

[0056] Optionally, the first reinforcing structure 13 is configured as a reinforcing rib. Based on the above structural configuration, the reinforcing rib can significantly improve the bending and torsional resistance at the connection between the first mounting part 12 and the first bracket 11, while dispersing stress and preventing deformation at this point.

[0057] It should be noted that the reinforcing ribs can be arranged along the connection line between the first mounting part 12 and the first bracket 11, or perpendicular to the connection line, or in other directions. Furthermore, the first reinforcing structure 13 can also be a curved structure to prevent deformation by dispersing stress. The first reinforcing structure 13 can also be a thickened structure arranged between the first mounting part 12 and the first bracket 11 to improve connection strength while preventing deformation at this point.

[0058] like Figures 1-5 As shown, in one or more embodiments, the base 1 further includes a second bracket 14, which is movably connected to the first bracket 11 and can extend beyond the first bracket 11. Based on the above structural configuration, by moving the second bracket 14 and adjusting the relative position of the second bracket 14 and the first bracket 11, the overall length of the base 1 can be adjusted to suit washing machines 8 of different sizes.

[0059] Furthermore, the base 1 also includes a second mounting part 15, which is located on the first side of the second bracket 14 and tilted upwards. The second mounting part 15 is used to connect with the bottom of the washing machine 8. Based on the above structural configuration, the base 1 is connected to the bottom of the washing machine 8 through the first mounting part 12 and the second mounting part 15, which can improve the stability of the base 1 installation, especially when the base 1 is long. The second mounting part 15 is located on the first side of the second bracket 14 and tilted upwards, making it difficult for the second side of the second bracket 14 to separate from the bottom of the washing machine 8 and form a gap. This avoids the second bracket 14 and the entire base 1 from colliding with the bottom of the washing machine 8 and / or the placement surface of the washing machine 8 during operation, causing additional vibration and noise. At the same time, it avoids affecting the normal use of the caster lifting mechanism and improves the user experience.

[0060] Possibly, a second reinforcing structure is provided at the connection between the second mounting part 15 and the second bracket 14.

[0061] Possibly, the first bracket 11 includes a first top plate 111, which extends downward to form a first side plate 112. The first side plate 112 has a plurality of first positioning holes. The second bracket 14 includes a bottom plate 141, which extends upward to form a second side plate 142. The second side plate 142 has a plurality of second positioning holes. The second bracket 14 is sleeved on the outside of the first bracket 11. After the second bracket 14 is moved into place, any second positioning hole is coaxial with the first positioning hole. A locking bolt is passed through the first positioning hole and the second positioning hole and connected to the second bracket 14 or connected to a nut, thereby fixing the first bracket 11 and the second bracket 14. This prevents the first bracket 11 and the second bracket 14 from relative displacement when the washing machine 8 vibrates during operation, thereby preventing vibration or noise caused by collision or friction.

[0062] Those skilled in the art will understand that, in cases where it is not necessary to adapt to washing machines 8 of different sizes, the base 1 may also exclude the second bracket 14, with the second mounting part 15 connected to the first bracket 11.

[0063] Furthermore, the caster lifting mechanism also includes a first base 3 and a second base 4. The first base 3 is connected to the bottom of the washing machine 8 via a first mounting part 12, and the second base 4 is connected to the bottom of the washing machine 8 via a second mounting part 15. Based on the above structural configuration, when the roller assembly 2 retracts, it provides stable support for the washing machine 8 through the first base 3 and the second base 4. Since the first base 3 is connected to the first mounting part 12 and the second base 4 is connected to the second mounting part 15, the distance between the second base 4 and the first base 3 can change as the second bracket 14 moves to accommodate washing machines 8 of different sizes and provide them with stable support.

[0064] The washing machine 8 is equipped with two feet: a first foot 3 (a fixed foot) and a second foot 4 (an automatic leveling foot). The fixed foot provides stable support for the washing machine 8, passing through the first mounting part 12 and threadedly connected to the bottom of the washing machine 8. The height of the fixed foot extending beyond the washing machine 8 can be adjusted by rotating it. The automatic leveling foot automatically levels the washing machine 8, eliminating the need for manual operation. This leveling is simple, convenient, and effective. Furthermore, the washing machine 8 automatically levels itself after each movement, facilitating its movement. The automatic leveling foot can be a telescopic foot, leveling automatically under gravity and hydraulic pressure, or it can be a foot capable of vertical movement, leveling automatically under gravity and friction. Those skilled in the art will understand that the first foot 3 can also be an automatic leveling foot, and the second foot 4 a fixed foot; or both the first foot 3 and the second foot 4 can be automatic leveling feet or both can be fixed feet.

[0065] Possibly, the first bracket 11 is provided with a first mounting hole, and the first foot 3 passes through the first mounting hole and connects to the bottom of the washing machine 8. The second bracket 12 is provided with a second mounting hole, and the second foot 4 passes through the second mounting hole and connects to the bottom of the washing machine 8. The second mounting hole can be a strip-shaped hole to avoid the second foot 4 not being aligned with the second mounting hole due to the movement of the second bracket 12 when it is installed.

[0066] like Figure 1 and Figure 2 As shown, in one or more embodiments, the top of the first support 11 is provided with a protruding structure 5, which abuts against the bottom of the washing machine 8. Based on the above structural configuration, by having the protruding structure 5 at the top of the first support 11 abut against the bottom of the washing machine 8, it is possible to avoid the first support 11 being suspended from the bottom of the washing machine 8 and deforming, thus ensuring the normal use of the roller assembly 2. For example, it ensures that the roller assembly 2 can support the washing machine 8 when unfolded, and ensures the normal unfolding and retraction of the roller assembly 2, improving the stability of use. It can also prevent the base 1 from deforming due to vibration during movement, and reduce the noise generated by the collision between the first support 11 and the bottom of the washing machine 8.

[0067] It should be noted that the protruding structure 5 and the first bracket 11 can be either separate structures or integrally formed structures. When the protruding structure 5 and the first bracket 11 are separate structures, the protruding structure 5 can be fixedly connected to the first bracket 11 by means of bonding, welding, bolting, etc. The top surface of the first bracket 11 can be provided with an installation groove, in which the protruding structure 5 is installed to limit its installation position and prevent incorrect installation from affecting its performance. When the protruding structure 5 and the first bracket 11 are integrally formed structures, they can be formed by stamping.

[0068] like Figures 1-8 As shown, in one or more embodiments, the caster lifting mechanism further includes a movable bracket 6, which is movably connected to the first bracket 11 and configured to push the roller assembly 2 to unfold. The first side is located to the side of the moving path of the movable bracket 6 or its extension. Based on the above structural configuration, the roller assembly 2 is unfolded by moving the movable bracket 6 relative to the first bracket 11, which facilitates the movement of the washing machine 8. The fact that the first side is located to the side of the moving path of the movable bracket 6 or its extension ensures that the arrangement of the first mounting part 12 does not affect the movement of the movable bracket 6, and does not additionally increase the overall length of the base 1.

[0069] It should be noted that after the caster lifting mechanism is installed at the bottom of the washing machine 8, the moving bracket 6 can be arranged in the front-to-back direction of the washing machine 8 relative to the first bracket 11. When the moving bracket 6 moves towards the front of the washing machine 8, the roller assembly 2 unfolds to facilitate operation of the moving bracket 6 by the operator in front of the washing machine 8. It is understood that the moving bracket 6 can also be arranged in other directions at the bottom of the washing machine 8, and no specific limitation is made here.

[0070] Regarding the specific structure of the movable support 6 pushing the roller assembly 2 to unfold, it can be as follows: 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 through a first connecting shaft 23, and the other end of the connecting arm 22 is rotatably connected to the roller 21 through a second connecting shaft 24. The bottom of the movable support 6 has a guide block 62, and the bottom of the guide block 62 is provided with an inclined surface. The movable support 6 is configured such that when it moves along the first support 11, the inclined surface abuts against the roller 21 to push the connecting arm 22 to rotate. Based on the above structural configuration, the movement of the movable support 6 causes the guide block 62 to move, thereby pushing the roller 21 down and driving the connecting arm 22 to rotate, so as to realize the unfolding of the roller assembly 2, thereby supporting the washing machine 8 and facilitating its movement. After the washing machine 8 moves into place, it drives the movable support 6 to move in the opposite direction. Since the roller assembly 2 supports the washing machine 8 at this time, the roller 21 abuts against the inclined surface of the guide block 62 under the action of the gravity of the washing machine 8 and moves upward, thereby driving the connecting arm 22 to rotate and retract. Alternatively, in the case where the first support 11 includes a first top plate 111 and a first side plate 112, the first side plate 112 may have a cutout. The movable support 6 includes a third top plate 63, which extends downward to form a third side plate 64. The third side plate 64 has an inclined groove, and the second connecting shaft 24 is located in the inclined groove and within the cutout. Based on the above structural configuration, when the washing machine 8 needs to be moved, the movable support 6 is moved so that the second connecting shaft 24 abuts against the inclined wall of the inclined groove. As the movable support 6 moves, the inclined groove pushes the second connecting shaft 24 downward from the cutout, thereby causing the connecting arm 22 to rotate and unfold, thus causing the roller 21 to move downward. After the washing machine 8 is moved into place, the movable support 6 is moved in the opposite direction. Since the roller assembly 2 supports the washing machine 8 at this time, the second connecting shaft 24 abuts against the inclined wall of the inclined groove under the gravity of the washing machine 8. As the movable support 6 moves, the second connecting shaft 24 moves upward along the inclined groove from the cutout, thereby causing the connecting arm 22 to rotate and retract, thus causing the roller 21 to move upward. Other structures can also be used, as long as the movable bracket 6 can move along the first bracket 11 to push the roller assembly 2 to unfold.

[0071] Furthermore, the caster lifting mechanism also includes a handle structure 7, which is rotatably connected to the first bracket 11 and is configured to drive the movable bracket 6 to reciprocate along the first bracket 11 when the handle structure 7 is rotated. Based on the above structural configuration, rotating the handle structure 7 can drive the movable bracket 6 to reciprocate relative to the first bracket 11.

[0072] Those skilled in the art will understand that the caster lifting mechanism may also omit the handle structure 7, allowing the user to move the movable support 6 by means of tools or by direct manual operation.

[0073] Optionally, the handle structure 7 has an extension arm 71, on which a locking structure 72 is provided, and the movable bracket 6 has a locking groove 61. The handle structure 7 is configured such that when the roller assembly 2 is unfolded, the locking structure 72 engages with the locking groove 61, and when the roller assembly 2 is retracted, the locking structure 72 disengages from the locking groove 61. Based on the above structural configuration, the rotation of the handle structure 7 drives the movable bracket 6 to move, pushing the roller assembly 2 to unfold. The extension arm 71 rotates with the handle structure 7, causing the locking structure 72 to engage with the locking groove 61, thus fixing the roller assembly 2 in the unfolded state. This prevents the roller assembly 2 from being pressed into retraction due to the weight of the washing machine 8. After the washing machine 8 is moved into position, the locking structure 72 disengages from the locking groove 61, and the handle structure 7 is rotated in the opposite direction to retract the roller assembly 2.

[0074] It should be noted that the snap-fit ​​structure 72 can be formed by bending the extension arm 71 upwards, or the snap-fit ​​structure 72 can be separately set from the extension arm 71 and fixedly connected as one unit by bolts, welding or adhesive.

[0075] Optionally, the handle structure 7 includes a handle portion 73 and a connecting portion 74 connected to the handle portion 73. The connecting portion 74 is rotatably connected to the first bracket 11 via a third connecting shaft 75. A fourth connecting shaft 76 is provided on the connecting portion 74, and a guide hole is provided on the movable bracket 6. The fourth connecting shaft 76 is rotatably and movably disposed in the guide hole. Based on the above structural configuration, when the user holds the handle portion 73, the connecting portion 74 can be rotated. The connecting portion 74 rotates around the third connecting shaft 75, while simultaneously driving the fourth connecting shaft 76 to rotate and move within the guide hole, thereby driving the movable bracket 6 to reciprocate along the first bracket 11.

[0076] It should be noted that when the extension arm 71 is provided, the extension arm 71 can be fixedly connected to the connecting part 74, and the rotation of the connecting part 74 drives the extension arm 71 to rotate.

[0077] Optionally, the handle 73 and the connecting part 74 are rotatably connected via a fifth connecting shaft 77, and are configured to be able to rotate to a folded position and an operating position. Based on the above structural configuration, the handle 73 can be rotated to the operating position when needed, thereby driving the connecting part 74 to rotate, and then driving the movable bracket 6 to move. When the handle 73 is not needed, it can be rotated to the folded position, effectively reducing the overall space occupied by the caster lifting mechanism and the packaging size during transportation. When the caster lifting mechanism is installed on the washing machine 8 as a whole, it can also reduce the overall space occupied and the overall packaging size during transportation.

[0078] For example, the handle 73 is rotated to the folded position as follows: Figure 2 As shown, the handle 73 is rotated to the operating position as follows: Figure 5 As shown. The specific positions of the folding position and the operating position can be adjusted as needed, as long as the handle 73 occupies less space when folded and can move the movable bracket 6 when in the operating position.

[0079] It should be noted that the handle 73 can also be fixedly connected to the connecting part 74 to simplify the structure and assembly difficulty. Those skilled in the art can make adjustments as needed.

[0080] Optionally, the connecting part 74 is provided with a connecting groove 741, and a portion of the handle part 73 is rotatably connected to the connecting groove 741. When the handle part 73 is rotated to the operating position, it abuts against the side wall of the connecting groove 741. A gasket is provided between the handle part 73 and the bottom inner wall of the connecting groove 741, and the gasket is sleeved on the fifth connecting shaft 77. Based on the above structural configuration, by abutting against the side wall of the connecting groove 741, the rotation of the handle part 73 to the operating position is limited. In this position, the handle part 73 can drive the connecting part 74 to rotate, thereby driving the movable bracket 6 to move. Since the handle part 73 is rotatably connected to the connecting part 74 through the fifth connecting shaft 77, there is a gap between the handle part 73 and the fifth connecting shaft 77, which causes the handle part 73 to easily tilt downward under the action of gravity. By providing a gasket between the handle part 73 and the bottom inner wall of the connecting groove 741, the downward tilting of the handle part 73 can be prevented, thereby preventing the handle part 73 from contacting the placement surface of the washing machine 8.

[0081] Possibly, the groove of the connecting groove 741 is located on the second side of the connecting part 74 to facilitate the rotation of the handle part 73 and avoid interference with the first mounting part 12.

[0082] Optionally, the handle 73 abuts against the first bracket 11 when rotated to the folded position. Based on the above structural configuration, the abutment between the handle 73 and the first bracket 11 limits the rotation of the handle 73 to the folded position.

[0083] It is understandable that a limiting block can also be set in the connecting groove 741, which abuts against the limiting block when the handle 73 is rotated to the folded position, thereby limiting the rotation of the handle 73 to the folded position.

[0084] Optionally, a shock-absorbing pad is provided on the top of the handle 73. Based on the above structural configuration, the shock-absorbing pad is used to prevent the handle 73 from making rigid contact with the bottom of the washing machine 8 when vibration occurs during the use of the washing machine 8, thereby reducing vibration and noise.

[0085] It is understandable that the shock-absorbing pad can also be attached to the bottom of the washing machine 8 and within the range of rotation of the handle 73, as long as rigid contact between the handle 73 and the bottom of the washing machine 8 can be avoided.

[0086] Possibly, the end of the handle 73 is fitted with a plastic sleeve 78, which has a wave-like structure, so that when the user grips the handle 73, the handle 73 can avoid rigid contact with the first support 11, thereby avoiding damage to the handle 73 and the first support 11.

[0087] Possibly, the top of the first bracket 11 is provided with a groove 113, which is used to accommodate downward protruding structures such as the extended edge of the bottom of the washing machine 8, to ensure that the first bracket 11 and the bottom of the washing machine 8 can be installed horizontally; the groove 113 extends to the bottom of the first bracket 11 to form a protrusion 114 at the bottom of the first bracket 11. The movable bracket 6 includes a pushing section 65 and a bending section 66 connected to each other. The pushing section 65 is movably connected to the first bracket 11, and the bending section 66 is movably connected to the protrusion 114. The bending section 66 is used to pass over the protrusion 114 so that the movable bracket 6 can move smoothly, thereby ensuring that the roller assembly 2 can unfold and retract smoothly; the bending section 66 is provided with a third reinforcing structure 67, which can be a reinforcing rib, to improve the strength of the bending section 66 and avoid resonance.

[0088] like Figure 1 As shown, in another aspect, 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, wherein a first mounting part 12 is mounted on the bottom of the household appliance.

[0089] 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.

[0090] 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 bracket (11) and a first mounting part (12). The first mounting part (12) is disposed on a first side of the first bracket (11) and tilted upward. The first mounting part (12) is used to connect to the bottom of the household appliance. 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, A first reinforcing structure (13) is provided at the connection between the first mounting part (12) and the first bracket (11).

3. The caster lifting mechanism for household appliances according to claim 2, characterized in that, The first reinforcing structure (13) is configured as a reinforcing rib.

4. The caster lifting mechanism for household appliances according to claim 1, characterized in that, The base (1) further includes a second bracket (14), which is movably connected to the first bracket (11) and can extend outside the first bracket (11).

5. The caster lifting mechanism for household appliances according to claim 4, characterized in that, The base (1) further includes a second mounting part (15), which is disposed on the first side of the second bracket (14) and tilted upwards. The second mounting part (15) is used to connect to the bottom of the household appliance.

6. The caster lifting mechanism for household appliances according to claim 5, characterized in that, The caster lifting mechanism also includes a first foot (3) and a second foot (4). The first foot (3) is connected to the bottom of the household appliance through the first mounting part (12), and the second foot (4) is connected to the bottom of the household appliance through the second mounting part (15).

7. The caster lifting mechanism for household appliances according to claim 1, characterized in that, The top of the first bracket (11) is provided with a protruding structure (5), which abuts against the bottom of the household appliance.

8. The caster lifting mechanism for household appliances according to claim 1, characterized in that, The caster lifting mechanism also includes a movable bracket (6), which is movably connected to the first bracket (11) and is configured to push the roller assembly (2) to unfold. The first side is located to the side of the moving path of the movable bracket (6) or its extension line.

9. The caster lifting mechanism for household appliances according to claim 8, characterized in that, The caster lifting mechanism also includes a handle structure (7), which is rotatably connected to the first bracket (11) and is configured to drive the movable bracket (6) to reciprocate along the first bracket (11) when the handle structure (7) rotates.

10. The caster lifting mechanism for household appliances according to claim 9, characterized in that, The handle structure (7) has an extension arm (71), the extension arm (71) is provided with a snap-fit ​​structure (72), the movable bracket (6) is provided with a slot (61), and the handle structure (7) is configured such that when the roller assembly (2) is unfolded, the snap-fit ​​structure (72) snaps into the slot (61), and when the roller assembly (2) is retracted, the snap-fit ​​structure (72) disengages from the slot (61).

11. The caster lifting mechanism for household appliances according to claim 9, characterized in that, The handle structure (7) includes a handle portion (73) and a connecting portion (74) connected to the handle portion (73). The connecting portion (74) is rotatably connected to the first bracket (11) via a third connecting shaft (75). A fourth connecting shaft (76) is provided on the connecting portion (74). A guide hole is provided on the movable bracket (6). The fourth connecting shaft (76) is rotatably and movably disposed in the guide hole.

12. The caster lifting mechanism for household appliances according to claim 11, characterized in that, The handle (73) and the connecting part (74) are rotatably connected by a fifth connecting shaft (77) and are configured to be able to rotate to a folded position and an operating position.

13. The caster lifting mechanism for household appliances according to claim 12, characterized in that, The connecting part (74) is provided with a connecting groove (741), and a portion of the handle part (73) is rotatably connected to the connecting groove (741). When the handle part (73) is rotated to the operating position, it abuts against the side wall of the connecting groove (741). A gasket is provided between the handle part (73) and the bottom inner wall of the connecting groove (741), and the gasket is sleeved on the fifth connecting shaft (77); and / or When the handle (73) is rotated to the folded position, it abuts against the first bracket (11).

14. The caster lifting mechanism for household appliances according to claim 11, characterized in that, The top of the handle (73) is provided with a shock-absorbing pad.

15. The caster lifting mechanism for household appliances according to claim 8, characterized in that, 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), and the other end of the connecting arm (22) is rotatably connected to the roller (21) via a second connecting shaft (24). The bottom of the movable bracket (6) has a guide block (62), and the bottom of the guide block (62) is provided with an inclined surface. The movable bracket (6) is configured such that when it moves along the first bracket (11), the inclined surface abuts against the roller (21) to push the connecting arm (22) to rotate.

16. 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 15, wherein the first mounting part (12) is mounted on the bottom of the household appliance.

Images