Caster lifting mechanism for household appliance and household appliance system

Abstract

The application relates to the technical field of household appliances, and particularly provides a castor lifting mechanism for a household appliance and a household appliance system, and aims to solve the problem that it is difficult to operate when mounting a bottom foot and a base on a washing machine in the prior art. To this end, the castor lifting mechanism comprises a base, the base is provided with a first positioning structure, the first positioning structure is used for being connected with a second positioning structure at the bottom of the household appliance; a roller assembly is arranged at the bottom of the base and can be unfolded and retracted, and the castor lifting mechanism is arranged to support the household appliance when the roller assembly is unfolded. The castor lifting mechanism can conveniently move the household appliance, and when the base and the bottom foot are mounted, the first positioning structure and the second positioning structure are connected first, so that the relative position of the base and the household appliance is determined, the base and the bottom foot are conveniently mounted and fixed, and the operation is simple and convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, and particularly provides a caster lifting mechanism for a household appliance and a household appliance system. BACKGROUND

[0002] As a modern household appliance, a washing machine has improved people's quality of life. With the diversification of use scenarios, how to make the washing machine more efficient and more convenient to serve the needs of different families has become a new topic.

[0003] In order to facilitate flexible movement of the washing machine, a caster capable of lifting is arranged at the bottom of the washing machine. When the washing machine needs to be moved, the caster is lowered to make it contact the ground, facilitating pushing. When the washing machine does not need to be moved, the caster is raised to be retracted, so that the washing machine is stably placed on the ground by the bottom feet. In the prior application which has not been disclosed, the caster is connected with the washing machine through a base. When the bottom feet are installed, the bolt needs to pass through the bottom feet and the base and be threadedly connected with the washing machine. The corresponding mounting holes of the bottom feet, the base and the washing machine need to be aligned, so that the bolt can be installed. Then, an operating tool is used to fasten the bolt. The operation is very difficult.

[0004] Application Content

[0005] The present application aims to solve the above technical problem, i.e., the problem of difficult operation when the bottom feet and the base are installed on the washing machine.

[0006] In a first aspect, the present application provides a caster lifting mechanism for a household appliance, comprising: a base, wherein a first positioning structure is arranged on the base, and the first positioning structure is used to connect with a second positioning structure at the bottom of the household appliance; and a roller assembly, wherein the roller assembly is arranged at the bottom of the base and is capable of being unfolded and retracted, and the caster lifting mechanism is arranged to support the household appliance when the roller assembly is unfolded.

[0007] In the above technical solution, when the household appliance needs to be moved, the roller assembly is unfolded and supports the household appliance to facilitate movement. After the household appliance is moved to a position, the roller assembly is retracted. When the caster lifting mechanism is installed, the first positioning structure and the second positioning structure are connected first, so that the relative position of the base and the household appliance is determined. After the position of the base is pre-positioned, the installation of the base is facilitated. At the same time, the positions of the mounting holes for installing the bottom feet on the base and the household appliance are also relatively determined and aligned. Then, the bottom feet are installed. The bolt or other connecting member can be directly connected with the household appliance through the bottom feet and the aligned mounting holes. Thus, the installation is completed. It is not necessary to align the connecting member with the corresponding mounting holes on the base and the household appliance during the process of passing through the connecting member. The operation is simple and convenient.

[0008] In the specific embodiment of the caster lifting mechanism for household appliances, the caster lifting mechanism further comprises a first foot and a first connecting piece, the base is provided with a first mounting hole, and the first connecting piece is used to pass through the first foot and the first mounting hole and connect with a second mounting hole of the household appliance.

[0009] In the specific embodiment of the caster lifting mechanism for household appliances, the caster lifting mechanism further comprises a first foot and a first connecting piece, the base is provided with a first mounting hole, and the first connecting piece is used to pass through the first foot and the first mounting hole and connect with a second mounting hole of the household appliance.

[0010] In the specific embodiment of the caster lifting mechanism for household appliances, the first positioning structure is a positioning groove or a positioning hole, and the second positioning structure is a positioning column; and / or the caster lifting mechanism further comprises a protruding structure, which is arranged on the top of the base and is arranged to be capable of abutting against the bottom of the household appliance.

[0011] In the specific embodiment of the caster lifting mechanism for household appliances, the first positioning structure is a positioning groove or a positioning hole, and the second positioning structure is a positioning column; and / or the caster lifting mechanism further comprises a protruding structure, which is arranged on the top of the base and is arranged to be capable of abutting against the bottom of the household appliance.

[0012] In the specific embodiment of the caster lifting mechanism for household appliances, the caster lifting mechanism further comprises a moving support, the roller assembly comprises a roller and a connecting arm, one end of the connecting arm is rotatably connected to the base through a first connecting shaft, the other end of the connecting arm is rotatably connected to the roller through a second connecting shaft, and the moving support is arranged to be capable of moving along the base to drive the connecting arm to rotate and abut against the roller assembly after the roller assembly is unfolded.

[0013] In the specific embodiment of the caster lifting mechanism for household appliances, the caster lifting mechanism further comprises a moving support, the roller assembly comprises a roller and a connecting arm, one end of the connecting arm is rotatably connected to the base through a first connecting shaft, the other end of the connecting arm is rotatably connected to the roller through a second connecting shaft, and the moving support is arranged to be capable of moving along the base to drive the connecting arm to rotate and abut against the roller assembly after the roller assembly is unfolded.

[0014] In the specific embodiment of the caster lifting mechanism for household appliances, the base comprises a base body and a first mounting portion and a second mounting portion connected with the base body, a groove is arranged on the top of the first mounting portion, the groove extends to the bottom of the first mounting portion to form a protruding portion at the bottom of the first mounting portion, and the first positioning structure is arranged on the second mounting portion; the moving support comprises a pushing segment and a bending segment connected with each other, the pushing segment is movably connected with the base body, and the bending segment is movably connected with the protruding portion.

[0015] In the specific embodiment of the caster lifting mechanism for household appliances, the base comprises a base body and a first mounting portion and a second mounting portion connected with the base body, a groove is arranged on the top of the first mounting portion, the groove extends to the bottom of the first mounting portion to form a protruding portion at the bottom of the first mounting portion, and the first positioning structure is arranged on the second mounting portion; the moving support comprises a pushing segment and a bending segment connected with each other, the pushing segment is movably connected with the base body, and the bending segment is movably connected with the protruding portion.

[0016] In the specific embodiment of the caster lifting mechanism for household appliances, the top of the bending segment is provided with a first reinforcing rib arranged along the moving direction of the moving support, and the protruding portion is provided with a second reinforcing rib, and the second reinforcing rib is arranged staggeredly with the first reinforcing rib.

[0017] In the specific embodiment of the caster lifting mechanism for household appliances, the top of the bending segment is provided with a first reinforcing rib arranged along the moving direction of the moving support, and the protruding portion is provided with a second reinforcing rib, and the second reinforcing rib is arranged staggeredly with the first reinforcing rib.

[0018] In the specific embodiment of the caster lifting mechanism for household appliances, the caster lifting mechanism further comprises a handle structure, the handle structure comprises a handle portion and a first connecting portion and a second connecting portion arranged on the handle portion, the first connecting portion is rotationally connected with the first mounting portion through a third connecting shaft, the second connecting portion is provided with a fourth connecting shaft, the bending segment is provided with a guide hole, and the fourth connecting shaft is rotationally and movably arranged in the guide hole.

[0019] In the specific embodiment of the caster lifting mechanism for household appliances, the caster lifting mechanism further comprises a handle structure, the handle structure comprises a handle portion and a first connecting portion and a second connecting portion arranged on the handle portion, the first connecting portion is rotationally connected with the first mounting portion through a third connecting shaft, the second connecting portion is provided with a fourth connecting shaft, the bending segment is provided with a guide hole, and the fourth connecting shaft is rotationally and movably arranged in the guide hole.

[0020] In the specific embodiment of the caster lifting mechanism for household appliances, a first elastic washer is arranged between the first connecting portion and the first mounting portion, and the first elastic washer is sleeved on the third connecting shaft; and / or a second elastic washer is arranged between the second connecting portion and the bent segment, and the second elastic washer is sleeved on the fourth connecting shaft.

[0021] In the specific embodiment of the caster lifting mechanism for household appliances, a first elastic washer is arranged between the first connecting portion and the first mounting portion, and the first elastic washer is sleeved on the third connecting shaft; and / or a second elastic washer is arranged between the second connecting portion and the bent segment, and the second elastic washer is sleeved on the fourth connecting shaft.

[0022] In the specific embodiment of the caster lifting mechanism for household appliances, the base body comprises a first top plate, two opposite sides of the first top plate extend downward to form first side plates, the first top plate and the two first side plates form a sliding groove, and the pushing segment is movably connected to the sliding groove; the pushing segment comprises a second top plate, the second top plate extends downward to form a second side plate, the second side plate is provided with an inclined groove, the first side plate is provided with a cutout, the second connecting shaft is arranged in the inclined groove and the cutout; and / or the caster lifting mechanism further comprises a second foot and a second connecting piece, the first mounting portion is provided with a third mounting hole, and the second connecting piece is used to connect the second foot and the third mounting hole to a fourth mounting hole of the household appliance.

[0023] In the case of adopting the technical scheme, the sliding groove can limit the movement of the pushing section, the structure of the base body can improve the strength of the base body, reduce the risk of deformation of the base body, and improve the stability of the caster lifting mechanism; when the household appliance needs to be moved, the bent section is driven to move, the bent section drives the pushing section to move in the sliding groove, so that the second connecting shaft abuts against the inclined surface of the inclined groove, and as the moving support continues to move, the inclined groove drives the second connecting shaft to move downward from the notch, thereby driving the connecting arm to rotate and expand, and driving the roller to move downward; after the household appliance is moved to the position, the bent section is driven to move in the opposite direction, the bent section drives the pushing section to move in the sliding groove in the opposite direction, and since the roller assembly supports the household appliance at this time, the second connecting shaft abuts against the inclined surface of the inclined groove under the gravity of the household appliance, and as the moving support continues to move, the second connecting shaft moves upward along the inclined groove from the notch, thereby driving the connecting arm to rotate and retract, and driving the roller to move upward. Since the base is first connected to the bottom of the household appliance by the first positioning structure and the second positioning structure and is pre-positioned, the third mounting hole and the fourth mounting hole can be aligned and positioned in advance, and at this time, the second foot is installed, the second connecting piece is passed through the second foot, then passed through the aligned third mounting hole and fourth mounting hole, and connected and fixed with the fourth mounting hole, which is simple and convenient to operate.

[0024] In a second aspect, the application also provides a household appliance system, which comprises a household appliance and a caster lifting mechanism, and the base is installed on the bottom of the household appliance.

[0025] In the case of adopting the technical scheme, the household appliance installed with the caster lifting mechanism can expand the roller assembly and support the household appliance when it needs to be moved, so as to facilitate the movement, and the roller assembly is retracted after being moved to the position; when the base and the foot are installed, the base can be pre-positioned first, which facilitates the installation of the base and the foot, and is simple and convenient to operate.

[0026] Compared with the prior art, the caster lifting mechanism for the household appliance provided by the application has the beneficial effects that: through the arrangement of the roller assembly, the roller assembly is expanded and supports the household appliance when the household appliance needs to be moved, so as to facilitate the movement, and the roller assembly is retracted after being moved to the position; when the caster lifting mechanism is installed, the first positioning structure and the second positioning structure are first connected, so that the relative position of the base and the household appliance is determined, and the position of the base is pre-positioned, which facilitates the installation of the base, and the positions of the mounting holes for installing the foot on the base and the household appliance are also relatively determined and aligned, so that the foot can be directly connected with the household appliance by passing the connecting piece such as a bolt through the foot and the aligned mounting holes at this time, and the installation is completed, without the need to align the connecting piece with the corresponding mounting holes on the base and the household appliance during the process of passing the connecting piece, which is simple and convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0027] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0028] Figure 1 is a structural schematic view of the caster lifting mechanism of the present application installed at the bottom of a washing machine;

[0029] Figure 2 is a structural schematic view of the caster lifting mechanism of the present application;

[0030] Figure 3 is a structural schematic view of the caster lifting mechanism of the present application from another angle;

[0031] Figure 4 is a bottom view of the caster lifting mechanism of the present application;

[0032] Figure 5 is a sectional view of the caster lifting mechanism of the present application;

[0033] Figure 6 is a structural schematic view of the caster lifting mechanism of the present application installed at the bottom of a washing machine from another angle;

[0034] Figure 7 is a partial structural schematic view of the A-A section of Figure 6 ;

[0035] Figure 8 is a structural schematic view of the first bottom foot of the present application.

[0036] Reference Signs:

[0037] 1 - base, 2 - roller assembly, 3 - moving bracket, 4 - handle structure, 5 - first bottom foot, 6 - second bottom foot, 7 - protrusion structure, 8 - washing machine, 11 - first positioning structure, 12 - first mounting hole, 13 - third mounting hole, 14 - base body, 15 - first mounting part, 16 - second mounting part, 21 - roller, 22 - connecting arm, 23 - first connecting shaft, 24 - second connecting shaft, 25 - torsional spring, 31 - pushing section, 32 - bending section, 41 - handle part, 42 - first connecting part, 43 - second connecting part, 44 - third connecting shaft, 45 - fourth connecting shaft, 51 - bottom foot seat, 52 - adjusting foot, 53 - telescopic cavity, 54 - communication structure, 81 - second positioning structure, 82 - extending edge, 141 - first top plate, 142 - first side plate, 143 - sliding groove, 144 - cutout, 145 - mounting groove, 151 - groove, 152 - protrusion part, 311 - second top plate, 312 - second side plate, 313 - inclined groove, 314 - strip-shaped hole, 321 - first reinforcing rib, 322 - guide hole, 511 - liquid passage, 521 - containing cavity. DETAILED DESCRIPTION

[0038] Some embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will understand that these embodiments are only used to explain the technical principles of the present application, and are not used to limit the protection scope of the present application. Those skilled in the art can make adjustments as needed to adapt to specific application occasions.

[0039] It should be noted that in the description of the present application, the terms indicating the direction or positional relationship such as "center", "upper", "lower", "left", "right", "front", "back", "top", "bottom", "vertical", "horizontal", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the related devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, in the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0040] In addition, it should also be noted that in the description of the present application, the ordinal numbers "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In addition, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connected" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0041] Based on the problem of difficulty in operation of mounting the foot and the base on the washing machine in the prior art, the first positioning structure and the second positioning structure are provided, when installing the caster lifting mechanism, the first positioning structure and the second positioning structure are connected first, so as to determine the relative position of the base and the household appliance, and the position of the base is pre-positioned, which can facilitate the installation of the base. At the same time, the positions of the mounting holes for mounting the foot on the base and the household appliance are also relatively determined and aligned, and then the foot is installed, the connecting member such as bolt can be directly connected through the foot and the aligned mounting holes of the household appliance, that is, the installation is completed, without the need to align the connecting member with the corresponding mounting holes on the base and the mounting holes on the household appliance in the process of passing through the connecting member, which is simple and convenient to operate.

[0042] Firstly, refer to Figure 1 and Figure 2The application provides a caster lifting mechanism for a household appliance. The caster lifting mechanism comprises a base 1 and a caster assembly 2. The base 1 is provided with a first positioning structure 11 for connecting with a second positioning structure 81 on the bottom of the household appliance. The caster assembly 2 is arranged on the bottom of the base 1 and can be deployed and retracted. The caster lifting mechanism is arranged to support the household appliance when the caster assembly 2 is deployed. According to the above arrangement, when the household appliance needs to be moved, the caster assembly 2 is deployed to support the household appliance, facilitating the movement. After the household appliance is moved to a position, the caster assembly 2 is retracted. When the caster lifting mechanism is installed, the first positioning structure 11 and the second positioning structure 81 are connected first, so that the relative position of the base 1 and the household appliance is determined. After the position of the base 1 is pre-positioned, the base 1 can be installed conveniently. Meanwhile, the positions of the mounting holes for installing the feet on the base 1 and the household appliance are also determined and aligned. At this time, the feet can be installed directly by penetrating the connecting members such as bolts through the feet and the aligned mounting holes and connecting with the household appliance, so that the installation is completed. It is not necessary to align the connecting members with the corresponding mounting holes on the base 1 and the household appliance during the penetration of the connecting members, and the operation is simple and convenient.

[0043] In the above, the "bottom" refers to the bottom of the household appliance in the use state after the caster lifting mechanism is connected with the household appliance.

[0044] It should be noted that the household appliance of the application can be a washing machine 8, a washer-dryer or a clothes dryer, etc. For the convenience of description, the household appliance will be described below by taking the washing machine 8 as an example. In the following description, "upper", "lower", "front", "rear", "left" and "right" refer to the upper and lower parts, the front direction close to the door, the rear direction close to the back opposite to the door, the left side direction and the right side direction of the washing machine 8 in the use state with the vertical plane as the reference. The bottom of the washing machine 8 can be provided with one caster lifting mechanism or a plurality of caster lifting mechanisms, as long as the washing machine 8 can be moved conveniently.

[0045] The number of the caster assemblies 2 can be adjusted according to the number of the caster lifting mechanisms, as long as the caster assemblies 2 can support the washing machine 8 stably and facilitate the movement of the washing machine 8 when the caster assemblies 2 are deployed. As a possible embodiment, the left and right sides of the bottom of the washing machine 8 are respectively provided with the caster lifting mechanisms. The length direction of the caster lifting mechanisms is arranged along the front-rear direction of the washing machine 8. Two caster assemblies 2 are arranged on each caster lifting mechanism.

[0046] Then refer to Figures 1-8 In one or more embodiments, the caster lifting mechanism further comprises a moving bracket 3, the caster assembly 2 comprises a caster 21 and a connecting arm 22, one end of the connecting arm 22 is rotatably connected with the base 1 through a first connecting shaft 23, the other end of the connecting arm 22 is rotatably connected with the caster 21 through a second connecting shaft 24, the moving bracket 3 is arranged to be movable along the base 1 to drive the connecting arm 22 to rotate, and abuts against the caster assembly 2 after the caster assembly 2 is unfolded. Based on the above structural arrangement, the connecting arm 22 is driven to rotate by moving the moving bracket 3, and in turn the caster 21 is lowered to achieve the unfolding of the caster assembly 2. After the caster assembly 2 is unfolded, the moving bracket 3 abuts against the caster assembly 2 to ensure that the caster assembly 2 can support the washing machine 8 and facilitate the movement of the washing machine 8.

[0047] Further, the base 1 comprises a base body 14, a first mounting portion 15 and a second mounting portion 16 connected with the base body 14, the top of the first mounting portion 15 is provided with a groove 151 extending to the bottom of the first mounting portion 15 to form a protruding portion 152 at the bottom of the first mounting portion 15, and the second mounting portion 16 is provided with the first positioning structure 11; the moving bracket 3 comprises a pushing section 31 and a bending section 32 connected with each other, the pushing section 31 is movably connected with the base body 14, and the bending section 32 is movably connected with the protruding portion 152. Based on the above structural arrangement, the groove 151 is used to accommodate the downward protruding structure such as the extended edge 82 at the bottom of the washing machine 8 to ensure that the first mounting portion 15 can be horizontally mounted with the bottom of the washing machine 8, and the bending section 32 is used to pass over the protruding structure to ensure that the moving bracket 3 can move smoothly, thereby ensuring that the caster assembly 2 can be unfolded and retracted smoothly.

[0048] The first mounting portion 15 and the second mounting portion 16 are used to be mounted with the bottom of the washing machine 8. The extended edge 82 is located at the front side of the washing machine 8 and arranged along the left-right width direction of the washing machine 8. The extended edge 82 can be formed by extending downward from the bottom of the front panel of the washing machine 8, or can be fixedly connected with the bottom of the washing machine 8 to enhance the structural strength of the washing machine 8, and can also provide protection for the components at the bottom of the washing machine 8, or serve as a decorative panel.

[0049] Optionally, the top of the bending section 32 is provided with a first reinforcing rib 321 arranged along the moving direction of the moving support 3, and the protruding portion 152 is provided with a second reinforcing rib arranged staggered with the first reinforcing rib 321. Based on the above structural arrangement, since the bending section 32 is movably connected with the protruding portion 152, the bending section 32 is far away from the base 1 except at the position of the protruding portion 152, which leads to the decrease of the strength of the bending section 32 and the resonance problem, therefore, the first reinforcing rib 321 arranged on the bending section 32 can increase the strength of the bending section 32, and the second reinforcing rib arranged on the protruding portion 152 can increase the strength of the protruding portion 152, and the staggered arrangement of the second reinforcing rib and the first reinforcing rib 321 can limit the movement of the moving support 3 to avoid the movement of the moving support 3 to other directions during the movement, thereby improving the stability of the caster lifting structure during use.

[0050] Among them, the number of the first reinforcing rib 321 and the second reinforcing rib can be one or more.

[0051] It should be noted that the first reinforcing rib 321 and the second reinforcing rib can also be arranged in other directions to increase the strength of the bending section 32 and the protruding portion 152.

[0052] Optionally, the caster lifting mechanism further comprises a handle structure 4, the handle structure 4 comprises 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 with the first mounting portion 15 through a third connecting shaft 44, the second connecting portion 43 is provided with a fourth connecting shaft 45, the bending section 32 is provided with a guide hole 322, and the fourth connecting shaft 45 is rotatably and movably arranged in the guide hole 322. Based on the above structural arrangement, the user holds the handle portion 41 and can rotate the handle structure 4, the handle structure 4 rotates around the third connecting shaft 44, drives the fourth connecting shaft 45 to rotate and move in the guide hole 322, and further drives the moving support 3 to reciprocate along the base 1.

[0053] Optionally, a first elastic gasket is arranged between the first connecting portion 42 and the first mounting portion 15, and the first elastic gasket is sleeved on the third connecting shaft 44. Based on the above structural arrangement, the first elastic gasket can avoid the axial shaking between the first connecting portion 42 and the first mounting portion 15, so that the handle structure 4 can stably rotate.

[0054] Optionally, a second elastic gasket is arranged between the second connecting portion 43 and the bending section 32, and the second elastic gasket is sleeved on the fourth connecting shaft 45. Based on the above structural arrangement, the second elastic gasket can avoid the axial shaking between the second connecting portion 43 and the bending section 32, so that the handle structure 4 can stably rotate.

[0055] Optionally, the base body 14 comprises a first top plate 141, two pairs of sides of the first top plate 141 extend downward to form first side plates 142, the first top plate 141 and the two sides of the first side plates 142 surround to form a sliding groove 143, the pushing section 31 is movably connected with the sliding groove 143; the pushing section 31 comprises a second top plate 311, the second top plate 311 extends downward to form a second side plate 312, the second side plate 312 is provided with an inclined groove 313, the first side plate 142 is provided with a cutout 144, and the second connecting shaft 24 is arranged in the inclined groove 313 and in the cutout 144. Based on the above structure, the sliding groove 143 can limit the movement of the pushing section 31, and the structure of the base body 14 can improve the strength of the base body 14, reduce the deformation direction of the base body 14, and improve the stability of the caster lifting mechanism; when the washing machine 8 needs to be moved, the bending section 32 is driven to move, the bending section 32 drives the pushing section 31 to move in the sliding groove 143, so that the second connecting shaft 24 abuts against the inclined surface of the inclined groove 313, and as the moving bracket 3 continues to move, the inclined groove 313 drives the second connecting shaft 24 to move downward from the cutout 144, thereby driving the connecting arm 22 to rotate and expand, and driving the roller 21 to move downward; after the washing machine 8 is moved to the position, the bending section 32 is driven to move in the opposite direction, the bending section 32 drives the pushing section 31 to move in the sliding groove 143 in the opposite direction, and since the roller assembly 2 supports the washing machine 8 at this time, the second connecting shaft 24 abuts against the inclined surface of the inclined groove 313 under the action of the gravity of the washing machine 8, and as the moving bracket 3 continues to move, the second connecting shaft 24 moves upward along the inclined groove 313 from the cutout 144, thereby driving the connecting arm 22 to rotate and retract, and driving the roller 21 to move upward.

[0056] Possibly, the first connecting shaft 23 is sleeved with a torsional spring 25, two ends of the torsional spring 25 abut against the bottom of the second top plate 311, which can press the second top plate 311 to the first top plate 141, avoiding resonance noise and other problems. The torsional spring 25 can also be other pressing structures, such as a hollow cylinder with elasticity.

[0057] Possibly, the second side plate 312 is provided with a strip-shaped hole 314, and the first connecting shaft 23 passes through the strip-shaped hole 314 and is connected with the first side plate 142. Based on the above structure, when the moving bracket 3 moves, the first connecting shaft 23 moves in the strip-shaped hole 314, and the movement of the first connecting shaft 23 is limited by the strip-shaped hole 314, thereby limiting the movement of the moving bracket 3.

[0058] Continue to refer to Figures 1-8In one or more embodiments, the caster lifting mechanism further comprises a first foot 5 and a first connecting member, the base 1 is provided with a first mounting hole 12, the first mounting hole 12 is arranged on the second mounting portion 16, and the first connecting member is used to connect the first foot 5 and the first mounting hole 12 with the second mounting hole of the washing machine 8. Based on the above structure, since the base 1 is first connected to the bottom of the washing machine 8 through the first positioning structure 11 and the second positioning structure 81 and is pre-positioned, the first mounting hole 12 and the second mounting hole can be aligned and positioned in advance. At this time, the first foot 5 is installed, the first connecting member is passed through the first foot 5, then passed through the aligned first mounting hole 12 and second mounting hole, and connected and fixed with the second mounting hole. The operation is simple and convenient.

[0059] Optionally, the caster lifting mechanism further comprises a second foot 6 and a second connecting member, the first mounting portion 15 is provided with a third mounting hole 13, and the second connecting member is used to connect the second foot 6 and the third mounting hole 13 with the fourth mounting hole of the washing machine 8. Based on the above structure, since the base 1 is first connected to the bottom of the washing machine 8 through the first positioning structure 11 and the second positioning structure 81 and is pre-positioned, the third mounting hole 13 and the fourth mounting hole can be aligned and positioned in advance. At this time, the second foot 6 is installed, the second connecting member is passed through the second foot 6, then passed through the aligned third mounting hole 13 and fourth mounting hole, and connected and fixed with the fourth mounting hole. The operation is simple and convenient.

[0060] Among them, the first connecting member and the second connecting member can be bolts, and the second mounting hole and the fourth mounting hole are threaded holes, which are convenient for the installation of the bolts. The first mounting hole 12 and the third mounting hole 13 can be round holes or long holes, and the long holes are used to facilitate the adjustment of the installation position of the base 1.

[0061] Possibly, the first foot 5 is a telescopic foot, and the second foot 6 is a fixed foot. The telescopic foot is used to automatically level the washing machine 8. Compared with the foot that adjusts the height by rotating, the telescopic foot does not need to be manually operated, and the leveling is simple and convenient, and the leveling effect is good. In addition, after the washing machine 8 is moved into position each time, it can also be automatically leveled through the telescopic foot, which provides convenience for the movement of the washing machine 8. The fixed foot is used to provide stable support for the washing machine 8. The height of the fixed foot extending out of the washing machine 8 can be adjusted by rotating the fixed foot. Those skilled in the art can understand that the first foot 5 can also be a fixed foot, and the second foot 6 can also be a telescopic foot. In addition, the first foot 5 and the second foot 6 can also be telescopic feet or fixed feet.

[0062] The telescopic foot can include a foot base 51, an adjusting foot 52, and a telescopic cavity 53. The foot base 51 is mounted on the second mounting portion 16 and is sleeved on the adjusting foot 52. The adjusting foot 52 is movably arranged along the axial direction of the foot base 51. The adjusting foot 52 has a containing cavity 521. The telescopic cavity 53 is arranged in the containing cavity 521 and is configured to drive the adjusting foot 52 to move. The telescopic cavities 53 of the at least two telescopic feet are connected through a communication structure 54. The communication structure 54 can be a pipe or a pipe and a liquid storage tank that are connected to each other. The telescopic cavity 53 can be a corrugated cavity made of a flexible material, but this is not a limitation. The telescopic cavity 53 can also be a rubber capsule. The telescopic cavity 53 can be fixed or in contact with the inner wall of the containing cavity 521 and abut against the foot base 51.

[0063] The telescopic cavity 53 can be filled with hydraulic medium. Under the action of pressure, the hydraulic medium can flow between the telescopic cavities 53 that are connected to each other. When the ground is uneven, the washing machine 8 is initially not horizontal, and the force applied to the telescopic foot is also different. The flowability of the hydraulic medium enables the telescopic cavities 53 to be self-adaptively adjusted and telescoped, so that the adjusting foot 52 is self-adaptively telescoped relative to the foot base 51. After the washing machine 8 is adjusted to be horizontal, the force applied to the telescopic foot is the same, and the hydraulic medium stops flowing, thereby providing stable support for the washing machine 8.

[0064] The communication manner of the telescopic cavities 53 through the communication structure 54 can be that each foot base 51 is provided with a liquid passage 511, each telescopic cavity 53 has a liquid passage opening, the liquid passage opening of each telescopic foot is connected to one end of the liquid passage 511, and the other end of the liquid passage 511 of each telescopic foot is connected through the communication structure 54. Possibly, a limiting groove is formed in the foot base 51. The groove of the limiting groove is provided with a first limiting ring protruding inward. The outer wall of the adjusting foot 52 is provided with a second limiting ring. The second limiting ring is located on the upper side of the first limiting ring, so that the first limiting ring provides limiting to avoid the adjusting foot 52 from falling off.

[0065] It should be noted that although the telescopic foot of the present application is described by taking the hydraulic foot as an example, this does not intend to limit the protection scope of the present application. As long as the telescopic foot has the function of automatic leveling, it can be any structure that exists or may exist in the future.

[0066] Continuing to refer to Figure 1 In one or more embodiments, the first positioning structure 11 is a positioning groove or a positioning hole, and the second positioning structure 81 is a positioning column. Based on the above structure, the positioning column is arranged in the positioning groove or the positioning hole, so that the base 1 can be pre-positioned, and the installation is simple and convenient.

[0067] The positioning slot refers to an open slot, and the positioning column can pass through the opening of the open slot and enter the open slot, so as to perform the pre-positioning in the case that the space at the bottom of the washing machine 8 is limited.

[0068] It can be understood by those skilled in the art that the first positioning structure 11 can also be arranged as a positioning column, and the second positioning structure 81 can be arranged as a positioning slot or a positioning hole, as long as the base 1 can be pre-positioned by the first positioning structure 11 and the second positioning structure 81.

[0069] Continuing to refer to Figure 1 and Figure 3 In one or more embodiments, the caster lifting mechanism further comprises a protruding structure 7 arranged at the top of the base 1 and configured to abut against the bottom of the washing machine 8. Based on the above structure, since the protruding structure 7 abuts against the bottom of the washing machine 8, the base 1 is prevented from being deformed due to the suspension of the base 1 from the bottom of the washing machine 8, especially when the roller assembly 2 is unfolded and supports the washing machine 8, the base 1 is more likely to be deformed, thereby ensuring the normal use of the roller assembly 2, such as ensuring that the roller assembly 2 can support the washing machine 8 when unfolded and that the roller assembly 2 can be normally unfolded and retracted without deformation of the base 1, thereby improving the stability of the use of the caster lifting mechanism and reducing the noise caused by the collision between the base 1 and the bottom of the washing machine 8.

[0070] It should be noted that the protruding structure 7 can be integrally formed with the base 1, or can be a separate pad, which is fixedly connected with the base 1 by bonding, welding or bolt connection, etc. In the case that the protruding structure 7 is a pad, the top surface of the base body 14 is provided with a mounting slot 145, and the pad is mounted in the mounting slot 145. The mounting slot 145 is used to limit the mounting position of the pad, so as to avoid the installation error affecting the use effect.

[0071] Continuing to refer to Figure 1 On the other hand, the application also provides a household appliance system, which comprises a household appliance and a caster lifting mechanism, and the base 1 is mounted at the bottom of the household appliance.

[0072] It should be noted that the above embodiments are only used to illustrate the principles of the application and are not intended to limit the protection scope of the application. Those skilled in the art can adjust the above embodiments without departing from the principles of the application, so that the application can be applied to more specific application scenarios.

[0073] The technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical schemes after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A caster lifting mechanism for household appliances, characterized in that, The caster lifting mechanism includes: A base (1) is provided on the base (1), and the first positioning structure (11) is used to connect with the second positioning structure (81) at 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, The caster lifting mechanism also includes a first base (5) and a first connector. The base (1) is provided with a first mounting hole (12). The first connector is used to pass through the first base (5) and the first mounting hole (12) to connect with the second mounting hole of the household appliance.

3. The caster lifting mechanism for household appliances according to claim 1, characterized in that, The first positioning structure (11) is a positioning groove or positioning hole, and the second positioning structure (81) is a positioning post; and / or The caster lifting mechanism also includes a protruding structure (7), which is located on the top of the base (1) and is configured to abut against the bottom of the household appliance.

4. 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 base (1) 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 base (1) to drive the connecting arm (22) to rotate, and to abut against the roller assembly (2) after the roller assembly (2) is unfolded.

5. The caster lifting mechanism for household appliances according to claim 4, characterized in that, The base (1) includes a base body (14) and a first mounting part (15) and a second mounting part (16) connected to the base body (14). The top of the first mounting part (15) is provided with a groove (151), and the groove (151) extends to the bottom of the first mounting part (15) to form a protrusion (152) at the bottom of the first mounting part (15). The second mounting part (16) is provided with the first positioning structure (11). The movable support (3) includes a pushing section (31) and a bending section (32) connected to each other. The pushing section (31) is movably connected to the base body (14), and the bending section (32) is movably connected to the protrusion (152).

6. The caster lifting mechanism for household appliances according to claim 5, characterized in that, The top of the bent section (32) is provided with a first reinforcing rib (321) arranged along the moving direction of the movable support (3), and the protrusion (152) is provided with a second reinforcing rib, which is arranged alternately with the first reinforcing rib (321).

7. The caster lifting mechanism for household appliances according to claim 5, characterized in that, 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 mounting portion (15) via a third connecting shaft (44). The second connecting portion (43) is provided with a fourth connecting shaft (45). The bent section (32) is provided with a guide hole (322). The fourth connecting shaft (45) is rotatably and movably provided in the guide hole (322).

8. The caster lifting mechanism for household appliances according to claim 7, characterized in that, A first elastic washer is provided between the first connecting part (42) and the first mounting part (15), and the first elastic washer is sleeved on the third connecting shaft (44); and / or A second elastic gasket is provided between the second connecting part (43) and the bent section (32), and the second elastic gasket is sleeved on the fourth connecting shaft (45).

9. The caster lifting mechanism for household appliances according to claim 5, characterized in that, The base body (14) includes a first top plate (141), and two pairs of sides of the first top plate (141) extend downward to form first side plates (142). The first top plate (141) and the first side plates (142) on both sides form a sliding groove (143). The pushing section (31) is movably connected to the sliding groove (143). The pushing section (31) includes a second top plate (311), which extends downward to form a second side plate (312). The second side plate (312) has a groove (313), and the first side plate (142) has a cut (144). The second connecting shaft (24) is located in the groove (313) and in the cut (144); and / or The caster lifting mechanism also includes a second base (6) and a second connector. The first mounting part (15) is provided with a third mounting hole (13). The second connector is used to pass through the second base (6) and the third mounting hole (13) to connect with the fourth mounting hole of the household appliance.

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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