Moving caster lifting mechanism for household appliance and household appliance system

Abstract

The utility model relates to the field of household appliances, in particular to a moving trundle lifting mechanism for a household appliance and a household appliance system, and aims to solve the problem of how to ensure the moving stability of the moving trundle lifting mechanism when the moving trundle lifting mechanism is applied to the household appliance with protruding structures such as extending edges at the bottom. In order to achieve the purpose, the moving trundle lifting mechanism comprises a base, a rolling wheel assembly and a moving support, the rolling wheel assembly is arranged at the bottom of the base in a liftable mode, the moving support is arranged to be capable of reciprocating along the base and comprises a pushing section and a bending section, and the bending section is arranged on one side of the pushing section in the moving direction. And a reinforcing structure is arranged on the bent section. Therefore, when the extending edge is avoided or the movable support is conveniently driven to move, a gap can be prevented from being formed between the pushing section and the base, or only a small gap is formed, a reinforcing structure is arranged at the stress key position of the bending section to prevent the movable support from deforming, and the moving stability of the movable trundle lifting mechanism can be guaranteed.

Description

TECHNICAL FIELD

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

[0002] In modern home life, household appliances are used more and more widely. In order to facilitate the flexible movement of household appliances, a mobile caster lifting mechanism is usually arranged at the bottom of the household appliance. The purpose of this mechanism design is to lower the roller assembly on the mobile caster lifting mechanism when the household appliance needs to be moved, so that it can be in contact with the ground and be easily pushed; and when the household appliance does not need to be moved, the roller assembly can be raised and retracted, so that the household appliance can be stably placed on the ground.

[0003] Part of the mobile caster lifting mechanism includes a base and a mobile support, which can reciprocate on the base to realize the lifting function of the roller assembly. In the prior application which has not been disclosed, an extension edge or other protruding structure is arranged at the bottom of the household appliance, in which case, in order to avoid a large gap between the mobile support and the base while reasonably avoiding or facilitating the movement of the mobile support, the mobile support needs to be bent to a certain extent. However, in actual use, the mobile caster lifting mechanism with this structure is prone to deformation of the mobile support after a long period of reciprocating movement, thereby affecting the movement stability of the mobile caster lifting mechanism.

[0004] Application Content

[0005] The present application aims to solve the above technical problems, i.e. how to ensure the movement stability of the mobile caster lifting mechanism when it is applied to a household appliance with an extension edge or other protruding structure at the bottom.

[0006] In a first aspect, the present application provides a mobile caster lifting mechanism for a household appliance, comprising: a base; a roller assembly arranged at the bottom of the base in a liftable manner; a mobile support arranged to be able to reciprocate along the base, the mobile support comprising: a pushing section connected to the roller assembly for pushing the roller assembly to descend; a bent section arranged on one side of the pushing section in the moving direction, the bent section being provided with a reinforcing structure.

[0007] In the alternative technical solution of the mobile caster lifting mechanism for household appliances, the top of the base has a groove extending towards the bottom of the base to form a protrusion at the bottom of the base, the bent section includes: a first extension section between the pushing section and the protrusion, bent away from the base; a second extension section bent from the first extension section towards the protrusion, and the reinforcing structure is arranged on at least one of the first extension section and the second extension section.

[0008] In the alternative technical solution of the mobile caster lifting mechanism for household appliances, the reinforcing structure is arranged on the second extension section and is arranged as a reinforcing rib.

[0009] In the alternative technical solution of the mobile caster lifting mechanism for household appliances, the reinforcing structure is arranged on the second extension section and is arranged as a reinforcing rib.

[0010] In the alternative technical solution of the mobile caster lifting mechanism for household appliances, the pushing section is attached to the base; and / or the mobile caster lifting mechanism is arranged such that when the roller assembly is lowered, the first extension section is attached to the side surface of the protrusion, and / or the second extension section is attached to the end surface of the protrusion in the protruding direction.

[0011] In the alternative technical solution of the mobile caster lifting mechanism for household appliances, the second extension section passes over the protrusion, and the mobile caster lifting mechanism further includes a handle structure connected to the part of the second extension section passing over the protrusion to drive the mobile bracket to reciprocate.

[0012] In the alternative technical solution of the mobile caster lifting mechanism for household appliances, the handle structure has a handle part and first and second connecting parts arranged on the handle part, the first connecting part is rotatably connected to the base through a first shaft, the second connecting part is provided with a second shaft, the second extension section is provided with a guide hole, or the second connecting part is provided with a guide hole, the second extension section is provided with a second shaft, and the second shaft is movably arranged in the guide hole.

[0013] In the alternative technical solution of the mobile caster lifting mechanism for household appliances, the roller assembly includes a roller and a connecting arm, one end of the connecting arm is rotatably connected to the roller, the other end of the connecting arm is rotatably connected to the base through a first connecting shaft, a pressing structure is sleeved on the first connecting shaft, and the pressing structure abuts against the pushing section.

[0014] In the optional technical scheme of the mobile caster lifting mechanism for household appliances, the pressing structure is a torsion spring, the torsion spring is sleeved on the first connecting shaft, and two ends of the torsion spring abut against the pushing section.

[0015] In the optional technical scheme of the mobile caster lifting mechanism for household appliances, the base comprises a guide groove and a first mounting plate arranged on one side of the guide groove in the guide direction, the protruding part is arranged on the first mounting plate, the pushing section has a moving groove, the moving groove is movably arranged in the guide groove and is in abutment with the guide groove, the pushing structure is arranged on the moving groove and is used for pushing the roller assembly to descend, the other end of the connecting arm is rotationally connected with the guide groove through a first connecting shaft, and the pressing structure abuts against the groove bottom of the moving groove.

[0016] In the optional technical scheme of the mobile caster lifting mechanism for household appliances, the pushing structure is an inclined groove arranged on the side wall of the moving groove, the side wall of the guide groove has a vertical notch, the connecting arm is rotationally connected with the roller through a second connecting shaft, and the second connecting shaft is arranged in the inclined groove and the notch; and / or the side wall of the moving groove is further provided with a first strip-shaped hole arranged in the moving direction, and the first connecting shaft is connected with the side wall of the guide groove through the first strip-shaped hole.

[0017] In the optional technical scheme of the mobile caster lifting mechanism for household appliances, the base is further provided with a telescopic foot, and the telescopic foot is used for automatically leveling the household appliance.

[0018] In the optional technical scheme of the mobile caster lifting mechanism for household appliances, the first mounting plate is provided with a fixed foot, the fixed foot is arranged to be capable of penetrating through the first mounting plate and being connected to the bottom of the household appliance, the base further comprises a second mounting plate, the first mounting plate and the second mounting plate are arranged on opposite sides of the guide groove in the guide direction, the second mounting plate is provided with a telescopic foot, and the telescopic foot is used for automatically leveling the household appliance.

[0019] In the optional technical scheme of the mobile caster lifting mechanism for household appliances, the second mounting plate is provided with a second strip-shaped hole arranged in the moving direction of the moving groove, the telescopic foot is provided with a connecting column arranged to be capable of penetrating through the second strip-shaped hole and being connected to the bottom of the household appliance.

[0020] In another aspect, the application further provides a household appliance system, which comprises a household appliance and the mobile caster lifting mechanism according to any one of the embodiments, and the base is mounted on the bottom of the household appliance.

[0021] The mobile caster lifting mechanism of the present application comprises a base, a roller assembly and a mobile support, the roller assembly is arranged on the bottom of the base in a lifting manner, the mobile support is arranged to be able to reciprocate along the base, the mobile support comprises a pushing section and a bent section, the bent section is arranged on one side of the pushing section in the moving direction, and the bent section is provided with a reinforcing structure.

[0022] Through the arrangement of the bent section on one side of the pushing section, the protruding structure such as the extension edge can be avoided, or connected with the handle structure to facilitate the movement of the mobile support, at the same time, the gap between the pushing section and the base can be avoided, or only a small gap is formed, so as to prevent the structure from loosening due to the gap between the pushing section and the base, and the reinforcing structure is arranged at the key stress position of the bent section to prevent the deformation of the mobile support, so as to ensure the stability of the movement of the mobile caster lifting mechanism. In addition, this kind of arrangement can also prevent the mutual collision between the mobile support and the base to produce noise.

[0023] Scheme 1: A mobile caster lifting mechanism for household appliances, characterized in that it comprises: a base; a roller assembly, arranged on the bottom of the base in a lifting manner; a mobile support, arranged to be able to reciprocate along the base, the mobile support comprises: a pushing section, connected with the roller assembly, used for pushing the roller assembly to descend; a bent section, arranged on one side of the pushing section in the moving direction, the bent section is provided with a reinforcing structure.

[0024] Scheme 2: The mobile caster lifting mechanism for household appliances according to scheme 1, characterized in that the top of the base has a groove, the groove extends to the bottom of the base to form a protruding part at the bottom of the base, the bent section comprises: a first extension section, located between the pushing section and the protruding part, bent away from the base from the pushing section; a second extension section, bent from the first extension section to the protruding part direction, the reinforcing structure is arranged on at least one of the first extension section and the second extension section.

[0025] Scheme 3: The mobile caster lifting mechanism for household appliances according to scheme 2, characterized in that the reinforcing structure is arranged on the second extension section, and is arranged as a reinforcing rib.

[0026] Scheme 4: The mobile caster lifting mechanism for household appliances according to scheme 2, characterized in that the reinforcing structure is arranged on the side of the second extension section away from the base in the thickness direction.

[0027] Scheme 5, the mobile caster lifting mechanism for household appliances according to scheme 2, characterized in that the pushing section is attached to the base; and / or the mobile caster lifting mechanism is arranged such that the first extension section is attached to the side surface of the protruding part and / or the second extension section is attached to the end surface of the protruding part in the protruding direction when the roller assembly is lowered.

[0028] Scheme 6, the mobile caster lifting mechanism for household appliances according to scheme 2, characterized in that the second extension section passes over the protruding part, and the mobile caster lifting mechanism further comprises a handle structure connected to the part of the second extension section passing over the protruding part to drive the mobile bracket to reciprocate.

[0029] Scheme 7, the mobile caster lifting mechanism for household appliances according to scheme 6, characterized in that the handle structure has a handle part and first and second connecting parts provided on the handle part, the first connecting part is rotatably connected to the base through a first shaft, the second connecting part is provided with a second shaft, the second extension section is provided with a guide hole, or the second connecting part is provided with a guide hole, the second extension section is provided with a second shaft, and the second shaft is movably arranged in the guide hole.

[0030] Scheme 8, the mobile caster lifting mechanism for household appliances according to scheme 2, characterized in that the roller assembly comprises a roller and a connecting arm, one end of the connecting arm is rotatably connected to the roller, the other end of the connecting arm is rotatably connected to the base through a first connecting shaft, a compression structure is sleeved on the first connecting shaft, and the compression structure abuts against the pushing section.

[0031] Scheme 9, the mobile caster lifting mechanism for household appliances according to scheme 8, characterized in that the compression structure is arranged as a torsion spring, the torsion spring is sleeved on the first connecting shaft, and both ends of the torsion spring abut against the pushing section.

[0032] Scheme 10, the mobile caster lifting mechanism for household appliances according to scheme 8, characterized in that the base comprises a guide groove and a first mounting plate provided on one side of the guide groove in the guiding direction, the protruding part is arranged on the first mounting plate, the pushing section has a moving groove, the moving groove is movably arranged in and attached to the guide groove, the moving groove is provided with a pushing structure for pushing the roller assembly to descend, the other end of the connecting arm is rotatably connected to the guide groove through a first connecting shaft, and the compression structure abuts against the groove bottom of the moving groove.

[0033] Scheme 11, the mobile caster lifting mechanism for household appliances according to scheme 10, characterized in that the pushing structure is arranged as a chute provided on the side wall of the moving groove, the side wall of the guide groove is provided with a notch arranged in the vertical direction, the connecting arm is rotatably connected with the roller through a second connecting shaft, and the second connecting shaft is arranged in the chute and the notch; and / or the side wall of the moving groove is further provided with a first slot arranged in the moving direction, and the first connecting shaft passes through the first slot and is connected with the side wall of the guide groove.

[0034] Scheme 12, the mobile caster lifting mechanism for household appliances according to scheme 1, characterized in that the base is further provided with a telescopic foot, and the telescopic foot is used to automatically level the household appliance.

[0035] Scheme 13, the mobile caster lifting mechanism for household appliances according to scheme 10, characterized in that the first mounting plate is provided with a fixed foot arranged to pass through the first mounting plate and connected to the bottom of the household appliance, the base further comprises a second mounting plate, the first mounting plate and the second mounting plate are arranged on opposite sides of the guide groove in the guiding direction, and the second mounting plate is provided with a telescopic foot used to automatically level the household appliance.

[0036] Scheme 14, the mobile caster lifting mechanism for household appliances according to scheme 13, characterized in that the second mounting plate is provided with a second slot arranged in the moving direction of the moving groove, and the telescopic foot is provided with a connecting column arranged to pass through the second slot and connected to the bottom of the household appliance.

[0037] Scheme 15, a household appliance system, characterized in that the household appliance system comprises a household appliance and the mobile caster lifting mechanism according to any one of schemes 1 to 14, and the base is mounted on the bottom of the household appliance. BRIEF DESCRIPTION OF DRAWINGS

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

[0039] Figure 1 is a structural schematic diagram of the mobile caster lifting mechanism of the present application (I);

[0040] Figure 2 is a structural schematic diagram of the mobile caster lifting mechanism of the present application (II); Figure 1

[0041] Figure 3 is a sectional view of A-A in

[0042] Figure 4 ​is Figure 3 enlarged view of the middle A;

[0043] Figure 5 is a structural schematic view of the mobile caster lifting mechanism of the present application (three);

[0044] Figure 6 is a bottom structure schematic view of the mobile caster lifting mechanism of the present application after being installed at the bottom of the laundry treating apparatus;

[0045] Figure 7 is a side structure schematic view of the mobile caster lifting mechanism of the present application after being installed at the bottom of the laundry treating apparatus;

[0046] Figure 8 is a front structure schematic view of the mobile caster lifting mechanism of the present application after being installed at the bottom of the laundry treating apparatus;

[0047] Figure 9 is a structural schematic view of the telescopic foot of the present application.

[0048] BRIEF DESCRIPTION OF DRAWINGS

[0049] 1 - base; 11 - guide slot; 111 - notch; 12 - first mounting plate; 121 - recess; 122 - protrusion; 13 - second mounting plate; 131 - second bar-shaped hole; 2 - mobile bracket; 21 - pushing section; 211 - mobile slot; 2111 - inclined slot; 2112 - first bar-shaped hole; 22 - first extension section; 23 - second extension section; 231 - guide hole; 232 - reinforcing structure; 3 - roller assembly; 31 - first connecting shaft; 32 - roller; 33 - second connecting shaft; 34 - connecting arm; 4 - handle structure; 41 - first shaft; 42 - second shaft; 5 - pressing structure; 6 - fixed foot; 7 - telescopic foot; 71 - foot seat; 711 - liquid passage; 72 - adjusting foot; 721 - accommodating cavity; 73 - telescopic cavity; 74 - communication structure; 8 - extension edge; 9 - washing machine. DETAILED DESCRIPTION

[0050] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can make adjustments to them as needed in order to adapt to specific application occasions.

[0051] It should be noted that in the description of the present application, the terms "upper", "lower" refer to the upper and lower parts of the household appliance in the height direction in the use state. "Front" refers to the direction close to the door in the horizontal direction in the use state of the household appliance, and "rear" refers to the direction close to the back of the household appliance in the horizontal direction in the use state. The width direction is the direction from one side panel to the other side panel of the household appliance. In addition, it should be noted that in the description of the present application, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In order to solve the problem of how to ensure the movement stability of the mobile caster lifting mechanism applied to household appliances with protruding structures such as extended edges, the present application provides a mobile caster lifting mechanism for a household appliance. First, the mobile caster lifting mechanism of the present application is briefly introduced.

[0053] As shown in Figures 1 to 8 The mobile caster lifting mechanism of the present application comprises a base 1, a roller assembly 3 and a mobile bracket 2. The roller assembly 3 is arranged on the bottom of the base 1 in a liftable manner. The mobile bracket 2 is arranged to be able to reciprocate along the base 1. The mobile bracket 2 comprises a pushing section 21 and a bent section. The bent section is arranged on one side of the pushing section in the moving direction. The bent section is provided with a reinforcing structure 232. It can be understood that the "bottom" mentioned above refers to the bottom in the use state after the mobile caster lifting mechanism is installed on the bottom of the household appliance.

[0054] Through the arrangement of the bent section on one side of the pushing section 21, the protruding structure such as the extended edge 8 can be avoided, or connected with the handle structure to facilitate the movement of the mobile bracket 2. At the same time, it can also avoid the formation of gaps between the pushing section 21 and the base 1, or only form a small gap, thereby preventing the structure from loosening due to the gap between the pushing section 21 and the base 1. The reinforcing structure arranged at the key stress position of the bent section can prevent the deformation of the mobile bracket 2, and can ensure the movement stability of the mobile caster lifting mechanism. In addition, this arrangement can also prevent the mobile bracket 2 and the base 1 from colliding with each other to produce noise.

[0055] The household appliance of the present application can be a laundry treating apparatus such as a washing machine 9, a washer-dryer or a dryer, or a refrigerator, etc. For the sake of convenience, the laundry treating apparatus of the present application will be introduced by taking the washing machine 9 as an example hereinafter.

[0056] As a possible implementation, referring to Figure 7The bottom of the washing machine 9 has a protruding extension edge 8, which can be located near the side of the door body of the washing machine 9, i.e. the front side of the washing machine 9, and can be arranged along the width direction of the washing machine 9. The extension edge 8 can be an extension edge 8 extending downward from the bottom side of the front plate of the washing machine 9, etc. The extension edge 8 can be fixedly connected with the bottom plate of the washing machine 9, for example, the bottom plate has a turned-up edge, which is attached to the extension edge 8 and fixedly connected by means of bolts, welding, etc., thereby enhancing the structural strength of the washing machine 9 and improving the overall stability. The extension edge 8 can also protect the components at the bottom of the washing machine 9, effectively preventing external objects from damaging or scratching the structure at the bottom of the washing machine 9, and can also serve as a decorative plate, etc.

[0057] Possibly, the base 1 of the mobile caster lifting mechanism of the present application includes a bottom guide groove 11 and a first mounting plate 12 arranged on one side of the guide groove 11 in the guide direction, and the roller assembly 3 is arranged on the guide groove 11 in a lifting manner. The top of the first mounting plate 12 has a groove 121 extending toward the bottom of the first mounting plate 12 to form a protruding portion 122 at the bottom of the first mounting plate 12. The two ends of the groove 121 in the width direction of the washing machine 9 are penetrated to accommodate the extension edge 8 described above, so as to ensure that the base 1 is horizontally mounted at the bottom of the washing machine 9, and avoid the mobile caster lifting mechanism from being blocked due to tilting or instability. The pushing section 21 of the mobile bracket 2 has a mobile groove 211 movably arranged in the guide groove 11, and the pushing structure is arranged on the mobile groove 211 to push the roller assembly 3 downward. The bending section includes a first extension section 22 and a second extension section 23. The first extension section 22 bends away from the base 1 from the groove bottom of the mobile groove 211, and the second extension section 23 bends away from the protruding portion 122 from the first extension section 22 and passes over the protruding portion 122. The mobile caster lifting mechanism further includes a handle structure 4 connected with the part of the second extension section 23 passing over the protruding portion 122 to drive the mobile bracket 2 to move back and forth. Among them, the reinforcing structure 232 is arranged on the side of the second extension section 23 away from the base 1 in the thickness direction, and is arranged as a reinforcing rib. The length direction of the reinforcing rib can be arranged along the moving direction of the mobile bracket 2 (such as the length direction of the second extension section 23 in the middle of the second extension section 23), and of course can also be arranged along the width direction of the second extension section 23. The number of reinforcing ribs can be greater than or equal to 2, and each reinforcing rib can be distributed at intervals on the second extension section 23. Alternatively, the number of reinforcing ribs can also be one. Figure 1

[0058] ​Since the second extension section 23 of the present application is provided with the reinforcing rib, the position is the key force bearing part of the moving bracket 2, and bears larger longitudinal and transverse forces during the lifting of the roller assembly 3. By increasing the reinforcing rib on the second extension section 23, the overall rigidity of the moving bracket 2 can be effectively improved, the material is prevented from being excessively bent, and the structural fatigue caused by repeated use is reduced. The reinforcing rib is provided on the side of the second extension section away from the base 1 in the thickness direction, which can prevent the reinforcing rib from interfering with the movement of the moving bracket 2.

[0059] Possibly, the roller assembly 3 includes rollers 32, connecting arms 34, a first connecting shaft 31 and a second connecting shaft 33. The rollers 32 are rotatably connected to opposite ends of the second connecting shaft 33, the connecting arms 34 are located between the rollers 32 at the two ends, and the connecting arms 34 are provided with a first shaft hole at one end, the second connecting shaft 33 is fixed in the first shaft hole, the connecting arms 34 are provided with a second shaft hole at the end away from the first shaft hole, and the first connecting shaft 31 is rotatably connected in the second shaft hole. The number of connecting arms 34 is 2, and the connecting arms 34 are spaced apart on the first connecting shaft 31 and the second connecting shaft 33. In addition, the pushing structure is provided as inclined grooves 2111 provided on the opposite side walls of the moving groove 211, the opposite side walls of the guide groove 11 are provided with vertical notches 111, and the two ends of the second connecting shaft 33 are respectively arranged in the inclined grooves 2111 on the two sides of the moving groove 211 and in the notches 111 on the two sides of the guide groove 11. Among them, the rollers 32 are located outside the guide groove 11, and the connecting arms 34 are located inside the moving groove 211. The opposite side walls of the moving groove 211 are also provided with a first slot 2112 arranged along the moving direction, and the two ends of the first connecting shaft 31 are rotatably connected to the side walls of the guide groove 11 by penetrating the first slots 2112 on the two sides, to avoid interference and ensure smooth movement of the moving bracket 2. It can be understood that the side walls of the guide groove 11 are provided with vertical notches 111, i.e. the notches 111 pass through from the side of the guide groove 11 close to the groove bottom to the side of the guide groove 11 away from the groove bottom. In other words, after the moving caster lifting mechanism is installed at the bottom of the washing machine 9, and the washing machine 9 is in a normal placement state, the notches 111 are arranged along the vertical direction.

[0060] It should be noted that the above description is only exemplary, as long as the roller assembly 3 can be lifted, the specific setting mode can be adjusted. For example, the roller 32 is fixedly connected with the second connecting shaft 33, and the second connecting shaft 33 is rotatably connected in the first shaft hole. The number of connecting arms 34 can be set to 1 or more than 2. The roller 32 can be provided with one, which can be located in the middle of the second connecting shaft 33 and in the guide groove 11. The first connecting shaft 31 is rotatably connected in the second shaft hole, and the first connecting shaft 31 is fixedly connected with the side of the guide groove 11. In addition, the side wall of the guide groove 11 can protrude from the side wall of the moving groove 211, and the first connecting shaft 31 is connected with the side wall of the guide groove 11 beyond the side wall of the moving groove 211. In this case, the first strip hole 2112 can be omitted. In addition, the guide groove 11 can have only one side provided with a notch 111, and the moving groove 211 can have only one side provided with an inclined groove 2111, one end of the second connecting shaft 33 is located in the notch 111 and the inclined groove 2111, and the other end is located in the moving groove 211. These adjustments do not deviate from the principles of the present application and are within the scope of the present application.

[0061] Possibly, the handle structure 4 has a handle part and a first connecting part and a second connecting part provided on the handle part, the first connecting part is rotatably connected with the first mounting plate 12 through the first shaft 41, the second connecting part is provided with the second shaft 42, the second extending section 23 is provided with a guide hole 231 (which can be a long hole), and the second shaft 42 is movably arranged in the guide hole 231. Among them, the end of the second shaft 42 can be provided with a limiting block to prevent the second shaft 42 from being pulled out of the guide hole 231. Possibly, the handle part, the first connecting part and the second connecting part can be integrally formed and made of metal material, a plastic sleeve is sleeved at the end of the handle part, and a wave structure is formed on the plastic sleeve to facilitate the user to hold the handle part.

[0062] The working principle of the mobile caster lifting mechanism of the present application will be introduced below.

[0063] When the wheels 32 need to be lowered to drive the washing machine 9 to move, the handle part is turned by a certain angle, so that the moving groove 211 moves smoothly along the first direction under the guidance of the guide groove 11. Since the second connecting shaft 33 of the wheel assembly 3 is arranged in the inclined groove 2111, the wheel assembly 3 moves along the inclined groove 2111 away from the base 1, and gradually expands under the guidance of the inclined wall of the inclined groove 2111 until the wheels 32 contact the ground. When the wheel assembly 3 needs to be retracted, the handle part is turned in the opposite direction by a certain angle, and the moving groove 211 moves smoothly along the second direction opposite to the first direction under the guidance of the guide groove 11, so that the wheel assembly 3 moves along the inclined groove 2111 towards the base 1, so that the wheel assembly 3 can be lifted and retracted, and the bottom of the washing machine 9 contacts the ground. The purpose of setting the notch 111 groove is not only to avoid, but also to provide a precise movement path for the second connecting shaft 33, effectively avoiding deviation and misplacement due to loose rotation, thereby ensuring the smoothness and stability of the expansion and retraction of the wheel assembly 3.

[0064] As a possible implementation, the wall surfaces of the moving groove 211 are in contact with the wall surfaces of the guide groove 11. When the wall surfaces of the moving groove 211 are in contact with the wall surfaces of the guide groove 11, the smooth movement of the moving groove 211 along the predetermined trajectory in the guide groove 11 can be ensured, and deviation or shaking of the moving groove 211 during movement can be prevented, thereby making the expansion and retraction process of the wheel assembly 3 more stable. It can also prevent gaps between the moving groove 211 and the guide groove 11 from causing structural looseness, deformation, and prevent the moving groove 211 and the guide groove 11 from colliding and producing noise.

[0065] As a possible implementation, the moving caster lifting mechanism is arranged such that when the wheel assembly 3 is lowered, the first extension 22 is in contact with the side surface of the protruding part 122, and the second extension 23 is in contact with the end surface of the protruding part 122 in the protruding direction. The contact between the first extension 22 and the side surface of the protruding part 122 can disperse pressure during support and force transmission, avoiding excessive stress concentration. The contact between the second extension 23 and the end surface of the protruding part 122 can increase the contact area between the moving bracket 2 and the protruding part 122 without increasing the height, thereby enhancing the anti-deformation ability of the structure and preventing material fatigue or deformation due to repeated movement during long-term use.

[0066] As a possible implementation, a torsion spring 5 is sleeved on the first connecting shaft 31, and the two ends of the torsion spring 5 abut against the groove bottom of the moving groove 211. For example, the two ends of the torsion spring protrude and abut against the groove bottom of the moving groove 211 on the opposite sides of the first connecting shaft 31. Since the torsion spring 5 is sleeved on the first connecting shaft 31 connected with the guide groove 11, the torsion spring can exert a force on the first connecting shaft 31, and the two ends of the torsion spring abut against the groove bottom of the moving groove 211, so that the moving groove 211 and the guide groove 11 can be pressed and combined by the elastic force, and problems such as resonance noise can be avoided.

[0067] It should be noted that although the present application is introduced by taking the torsion spring sleeved on the first connecting shaft 31 as an example. However, this is not intended to limit the protection scope of the present application. The torsion spring can be replaced by other pressing structures 5, as long as it can abut against the groove bottom of the moving groove 211. The specific form of change does not deviate from the principle of the present application. For example, the pressing structure 5 is provided as a hollow cylinder with elasticity, which abuts against the groove bottom of the moving groove 211, etc. These adjustments do not deviate from the principle of the present application and are within the protection scope of the present application.

[0068] As a possible implementation, the base 1 is provided with a telescopic foot 7 for automatically leveling the washing machine 9. When the user needs to move the washing machine 9, the mobile caster lifting mechanism can be lowered, so that the household appliance is moved by the mobile caster lifting mechanism. After stopping moving, the mobile caster lifting mechanism can be raised and retracted, and the telescopic foot 7 contacts the ground to perform leveling operation, ensuring that the equipment immediately returns to a stable state. Without any additional operation, the movement and stability of the equipment can be realized, and the use scene of the washing machine 9 can be seamlessly and stably switched.

[0069] Possibly, the base 1 further includes a second mounting plate 13, and the second mounting plate 13 and the first mounting plate 12 are located on opposite sides of the guide groove 11 in the guide direction. The first mounting plate 12 is provided with a fixed foot 6 which is arranged to pass through the first mounting plate 12 and be connected to the bottom plate of the washing machine 9, and the telescopic foot 7 is arranged on the second mounting plate 13. It can be understood that the fixed foot 6 refers to a foot that cannot be telescopic. Specifically, the fixed foot 6 includes a support pad and a threaded rod, one end of the threaded rod is connected to one side of the support pad, the other end of the threaded rod passes through the first mounting plate 12 and is connected to the bottom plate of the washing machine 9, and the support pad is used to contact a reference surface such as the ground. Among them, a fastening nut can be sleeved on the threaded rod, and the fastening nut is used to press the support pad tightly, and the first mounting plate 12 can act as a gasket to improve the connection stability. Alternatively, the threaded rod can be replaced by a rod body without threads, and the end of the rod body can be provided with a buckle. The bottom plate of the washing machine 9 is provided with a clamping groove, and the buckle and the clamping groove are clamped to realize the fastening connection with the bottom plate.

[0070] The guiding groove 11 is provided with a fixed foot 6 on one side and a telescopic foot 7 on the other side, so that after the mobile caster lifting mechanism is installed, the fixed foot 6 is located at the front side of the washing machine 9, and the telescopic foot 7 is located at the rear side of the washing machine 9. During use of the washing machine 9, the front part is more stable due to the fixed foot 6 at the front part, which can reduce the risk of damage to the front foot caused by bumping and the like, and the telescopic foot 7 at the rear side provides flexibility, which can adjust the height according to actual needs, so that the washing machine 9 can run stably in various scenes.

[0071] As a possible implementation, the second mounting plate 13 is provided with a second slot hole 131, and the second slot hole 131 is arranged along the moving direction of the moving groove 211. The telescopic foot 7 is provided with a connecting column which can pass through the second slot hole 131 and be connected to the bottom of the household appliance. The connecting column of the embodiment can be a threaded column, one end of which is connected to the telescopic foot 7, and the other end is screwed into the bottom plate of the washing machine 9. Alternatively, the threaded column can be replaced by a rod body without threads, and the end of the rod body can be provided with a buckle. The bottom plate of the washing machine 9 is provided with a clamping groove, and the buckle and the clamping groove are clamped to realize fastening connection with the bottom plate.

[0072] In the case where the mobile caster lifting mechanism is arranged along the front-rear direction of the washing machine 9, the above arrangement can adjust the position of the telescopic foot 7 relative to the front-rear direction of the washing machine 9, so as to adjust the position of the foot of the washing machine 9 of different depths, which is suitable for different models of washing machines 9 and is convenient for upgrading the existing washing machines 9. The bottom plate of the washing machine 9 can be provided with a fixed hole corresponding to the position of the slot hole, so as to facilitate installation of the connecting column on the telescopic foot 7.

[0073] As a possible implementation, the number of the mobile caster lifting mechanism of the present application is multiple, and two are taken as an example for introduction. The two mobile caster lifting mechanisms are arranged on opposite sides of the bottom plate of the washing machine 9 and can be arranged along the front-rear direction of the washing machine 9. The number of the roller assembly 3 on each mobile caster lifting mechanism can be multiple, and two are taken as an example for introduction. The two roller assemblies 3 are distributed at intervals and are rotatably connected to opposite sides of the guiding groove 11 through the connecting arm 34, so as to improve the stability during movement.

[0074] The possible implementation of the telescopic foot 7 will be introduced below.

[0075] As Figure 9As shown, the number of telescopic feet 7 is at least two, the telescopic feet 7 include a foot base 71, an adjusting foot 72 and a telescopic cavity 73, the foot base 71 is mounted on the second mounting plate 13, and is sleeved on the adjusting foot 72, the adjusting foot 72 is movably arranged axially along the foot base 71, the adjusting foot 72 has a containing cavity 721, the telescopic cavity 73 is arranged in the containing cavity 721 and is arranged to drive the adjusting foot 72 to move, and the telescopic cavities 73 of the at least two telescopic feet 7 are communicated through a communication structure 74. The communication structure 74 can be a pipe, or a pipe and a liquid storage tank and the like in communication with each other. Among them, the telescopic cavity 73 can be a corrugated cavity of flexible material, but this is not a limitation, the telescopic cavity 73 can also be a rubber capsule and the like. The telescopic cavity 73 can be fixed or in contact with the inner wall corresponding to the containing cavity 721 and abut against the foot base 71.

[0076] Among them, the telescopic cavity 73 can be filled with hydraulic medium, under the action of pressure, the hydraulic medium can flow between the telescopic cavities 73 in communication with each other, when the ground is uneven, different pressures are generated due to unevenness, and the flowability of the hydraulic medium enables the telescopic cavities 73 to be self-adaptively adjusted and telescoped, so as to drive the adjusting foot 72 to be self-adaptively telescoped relative to the foot base 71, and after the hydraulic medium stops flowing, the automatic leveling of the telescopic feet 7 can be realized.

[0077] The communication mode of each telescopic cavity 73 through the communication structure 74 can be that each foot base 71 is provided with a liquid passage 711, each telescopic cavity 73 has a liquid passage opening, the liquid passage opening of each telescopic foot 7 is connected with one end of the liquid passage 711, and the other end of the liquid passage 711 of each telescopic foot 7 is communicated through the communication structure 74. Possibly, the foot base 71 is formed with a mounting groove, the groove of the mounting groove is provided with a first limiting ring protruding inwardly, the outer wall of the adjusting foot 72 is provided with a second limiting ring, and 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 falling of the adjusting foot 72.

[0078] The number and position of the second bar-shaped hole 131 for mounting the telescopic foot 7 can be adjusted according to the actual application, for example, in the case of a square foot seat 71, connection holes can be arranged at the four corners of the foot seat 71, in this case, the second bar-shaped hole 131 can be arranged on the opposite sides of the second mounting plate 13, the second bar-shaped hole 131 on one side corresponds to the two connection holes on one side of the foot seat 71, and the second bar-shaped hole 131 on the other side corresponds to the two connection holes on the other side of the foot seat 71, then a bolt or screw is sequentially passed through the corresponding connection hole and the second bar-shaped hole 131 and connected to the base plate. For example, in the case of arranging connection holes on the middle of the opposite sides of the foot seat 71, only one second bar-shaped hole 131 can be arranged, then a bolt or screw is sequentially passed through the corresponding connection hole and the second bar-shaped hole 131 and connected to the base plate. In addition, positioning holes can also be arranged on the second mounting plate 13 to pre-position the telescopic foot 7 before connection, improving accuracy.

[0079] It should be noted that although the telescopic foot 7 of the present application is illustrated by taking a hydraulic foot as an example, this is not intended to limit the protection scope of the present application, as long as the telescopic foot 7 has the function of automatic leveling, it can be any structure of the existing, future possible. For example, the telescopic foot 7 is composed of an electric telescopic foot 7, that is, the foot is driven to extend and retract by a motor and a transmission assembly, the motor can be a small DC motor or a stepping motor, the motor is installed at a specific position at the bottom of the washing machine 9, and the stability thereof is ensured by a fixed support, the output shaft of the motor is connected to the transmission assembly, which can be a gear set or a screw nut mechanism, if it is a screw nut mechanism, the motor drives the screw to rotate, the nut is connected to the foot, and as the screw rotates, the nut moves up and down along the screw, thereby driving the foot to extend and retract. In order to realize the function of automatic leveling, a corresponding control circuit and sensor can be provided. The sensor can detect the level of the washing machine 9, such as a gyroscope, an acceleration sensor, etc. These sensors transmit information such as the inclination angle of the washing machine 9 to the control circuit, the control circuit judges whether the washing machine 9 is in a horizontal state according to the signal of the sensor, and controls the operation of the motor to adjust the length of the foot until the washing machine 9 reaches the horizontal state.

[0080] In another aspect, the present application also provides a household appliance system, which comprises the mobile caster lifting mechanism of any of the above embodiments, and further comprises a household appliance, and the base 1 is installed at the bottom of the household appliance.

[0081] It should be noted that the above embodiments are only used to illustrate the principles of the present application and are not intended to limit the protection scope of the present application, and those skilled in the art can adjust the above structure without deviating from the principles of the present application, so that the present application can be applied to more specific application scenarios.

[0082] For example, as an alternative embodiment, although the reinforcing structure 232 of the present application is introduced by taking the reinforcing rib as an example, it is not intended to limit the protection scope of the present application, for example, it can be replaced by a reinforcing block, etc., and these adjustments do not deviate from the principles of the present application and are within the protection scope of the present application.

[0083] For example, as an alternative embodiment, although the present application is introduced by taking the through hole of the groove 121 at both ends in the width direction of the washing machine 9 as an example, it is not intended to limit the protection scope of the present application. For example, the end of the groove 121 near the edge of the washing machine 9 is blocked, and the other end is through, etc. These adjustments do not deviate from the principles of the present application and are within the protection scope of the present application.

[0084] For example, as an alternative embodiment, although the present application is introduced by taking the second shaft 42 provided on the second connecting part and the guide hole 231 provided on the second extension section 23 as an example, it is not intended to limit the protection scope of the present application. For example, the guide hole 231 is provided on the second connecting part, and the second shaft 42 is provided on the second extension section 23. These adjustments do not deviate from the principles of the present application and are within the protection scope of the present application.

[0085] For example, as an alternative embodiment, although the present application is introduced by taking the first connecting shaft 31 rotatably connected to the side wall of the guide groove 11 as an example, it is not intended to limit the protection scope of the present application. For example, the groove bottom of the moving groove 211 is provided with a avoiding groove, the guide groove 11 is provided with a third shaft hole at the position corresponding to the avoiding groove, and the first connecting shaft 31 is rotatably connected in the third shaft hole. These adjustments do not deviate from the principles of the present application and are within the protection scope of the present application.

[0086] For example, as an alternative embodiment, the specific form of the pushing structure is not fixed. As long as the pushing structure can push the roller assembly 3 to descend, the specific form can be adjusted. For example, the pushing structure is a wedge-shaped block provided on the groove bottom of the moving groove 211, and the wedge-shaped block has an inclined surface. In this case, the roller 32 can be provided at the middle part of the second connecting shaft 33, and the two ends of the second connecting shaft 33 are connected with the two side connecting arms 34, so that the roller 32 moves away from the base 1 under the guidance of the inclined surface of the wedge-shaped block to realize the descent of the roller assembly 3. In this case, the setting of the inclined groove 2111, the notch 111 and the first strip-shaped hole 2112 can be omitted. These adjustments do not deviate from the principles of the present application and are within the protection scope of the present application.

[0087] For example, as an alternative embodiment, the second extension section 23 can not pass through the protruding part 122, the second connecting part of the handle structure 4 is connected with the second extension section 23, and the handle part passes through the protruding part 122 to facilitate the use of the user.

[0088] For example, as an alternative embodiment, the handle structure 4 comprises a handle part and a driving part, so that the handle part drives the moving groove 211 to reciprocate in the guide groove 11 through the driving part. The driving part can be a connecting rod mechanism, a cam mechanism, a gear and rack mechanism, a crank mechanism, etc. These adjustments do not deviate from the principles of the present application and are within the scope of protection of the present application.

[0089] For example, as an alternative embodiment, the pushing section 21 can not have the moving groove 211, and the moving groove 211 is replaced by a first straight plate structure which is in contact with the groove bottom of the guide groove 11. In this case, the pressing structure 5 is in contact with the first straight plate structure. Further, the base 1 can also not have the guide groove 11, and the guide groove 11 is replaced by a second straight plate structure, and the connecting arm 34 of the roller assembly 3 is rotationally connected to the stand column through the first connecting shaft 31.

[0090] For example, as an alternative embodiment, the reinforcing structure 232 is arranged on the first extension section 22. Further, the reinforcing structure 232 is arranged on both the first extension section 22 and the second extension section 23. For example, the reinforcing structure 232 extends from the first extension section 22 to the second extension section 23.

[0091] For example, as an alternative embodiment, the pressing structure 5 can be omitted.

[0092] For example, as an alternative embodiment, the handle structure 4 can be omitted, and the user drives the moving bracket 2 by using a tool or directly manually.

[0093] For example, as an alternative embodiment, the fixed foot can be replaced by a telescopic foot.

[0094] For example, as an alternative embodiment, the telescopic foot can be replaced by a fixed foot.

[0095] For example, as an alternative embodiment, the bending section only comprises the first extension section, and the handle structure is directly connected to the first extension section.

[0096] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand 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 related technical features without deviating from the principles of the present application, and the technical solutions after these changes or replacements will fall within the protection scope of the present application.

Claims

1. A mobile caster lifting mechanism for a domestic appliance, characterized in that, The utility model relates to a mobile caster lifting mechanism for household appliances, comprising: a base (1); a roller assembly (3) arranged on the bottom of the base (1) and capable of being lifted and lowered; a moving support (2) arranged to be capable of reciprocating along the base (1), the moving support (2) comprising: a pushing section (21) connected to the roller assembly (3) and used for pushing the roller assembly (3) to descend; a bending section arranged on one side of the pushing section (21) in the moving direction, the bending section being provided with a reinforcing structure (232).

2. The mobile caster lifting mechanism for household appliances according to claim 1, wherein the top of the base (1) is provided with a groove (121) extending towards the bottom of the base (1) to form a protrusion (122) on the bottom of the base (1), the bending section comprising: a first extension section (22) bent away from the base (1) from the pushing section (21) and located between the pushing section (21) and the protrusion (122); a second extension section (23) bent towards the protrusion (122) from the first extension section (22), the reinforcing structure (232) being arranged on at least one of the first extension section (22) and the second extension section (23).

3. The mobile caster lifting mechanism for household appliances according to claim 2, wherein the reinforcing structure (232) is arranged on the second extension section (23) and is configured as a reinforcing rib.

4. The mobile caster lifting mechanism for household appliances according to claim 2, wherein the reinforcing structure (232) is arranged on the side of the second extension section (23) away from the base (1) in the thickness direction.

5. The mobile caster lifting mechanism for household appliances according to claim 2, wherein the pushing section (21) is attached to the base (1); and / or the mobile caster lifting mechanism is configured such that, when the roller assembly (3) descends, the first extension section (22) is attached to the side surface of the protrusion (122) and / or the second extension section (23) is attached to the end surface of the protrusion (122) in the protruding direction.

6. The mobile caster lifting mechanism for household appliances according to claim 2, wherein the second extension section (23) passes over the protrusion (122), and the mobile caster lifting mechanism further comprises a handle structure (4) connected to the part of the second extension section (23) passing over the protrusion (122) and used to drive the moving support (2) to reciprocate.

7. The mobile caster lifting mechanism for household appliances according to claim 6, wherein the handle structure (4) has a handle portion and first and second connecting portions arranged on the handle portion, the first connecting portion being rotatably connected to the base (1) through a first shaft (41), The second connecting part is provided with a second shaft (42), and the second extension section (23) is provided with a guide hole (231), or the second connecting part is provided with a guide hole (231), and the second extension section (23) is provided with a second shaft (42), The second shaft (42) is movably arranged in the guide hole (231).

8. The mobile caster lifting mechanism for household appliances according to claim 2, wherein the roller assembly (3) comprises a roller (32) and a connecting arm (34), one end of the connecting arm (34) is rotatably connected with the roller (32), the other end of the connecting arm (34) is rotatably connected with the base (1) through a first connecting shaft (31), a compression structure (5) is sleeved on the first connecting shaft (31), and the compression structure (5) abuts against the pushing section (21).

9. The mobile caster lifting mechanism for household appliances according to claim 8, wherein the compression structure (5) is a torsion spring, the torsion spring is sleeved on the first connecting shaft (31), and both ends of the torsion spring abut against the pushing section (21).

10. The mobile caster lifting mechanism for household appliances according to claim 8, wherein the base (1) comprises a guide groove (11) and a first mounting plate (12) arranged on one side of the guide groove (11) in a guide direction, the protruding part (122) is arranged on the first mounting plate (12), the pushing section (21) has a moving groove (211), the moving groove (211) is movably arranged in the guide groove (11) and abuts against the guide groove (11), the moving groove (211) is provided with a pushing structure for pushing the roller assembly (3) to descend, the other end of the connecting arm (34) is rotatably connected with the guide groove (11) through a first connecting shaft (31), and the compression structure (5) abuts against the groove bottom of the moving groove (211).

11. The mobile caster lifting mechanism for household appliances according to claim 10, wherein the pushing structure is an inclined groove (2111) arranged on the side wall of the moving groove (211), the side wall of the guide groove (11) has a vertical notch (111), the connecting arm (34) is rotatably connected with the roller (32) through a second connecting shaft (33), and the second connecting shaft (33) is arranged in the inclined groove (2111) and the notch (111); and / or the side wall of the moving groove (211) is further provided with a first strip-shaped hole (2112) arranged in a moving direction, and the first connecting shaft (31) is connected with the side wall of the guide groove (11) through the first strip-shaped hole (2112).

12. The mobile caster lifting mechanism for household appliances according to claim 1, wherein the base (1) is further provided with a telescopic foot (7) for automatically leveling the household appliance. ​ ​ ​ ​ ​ ​ 13. The mobile caster lifting mechanism for household appliances according to claim 10, characterized in that, the first mounting plate (12) is provided with a fixed foot (6) arranged to pass through the first mounting plate (12) and connected to the bottom of the household appliance, the base (1) further comprises a second mounting plate (13), the first mounting plate (12) and the second mounting plate (13) are arranged on opposite sides of the guide slot (11) in the guide direction, and the second mounting plate (13) is provided with an extendable foot (7) for automatically leveling the household appliance.

14. The mobile caster lifting mechanism for household appliances according to claim 13, characterized in that, the second mounting plate (13) is provided with a second slot (131) arranged along the moving direction of the moving slot (211), and the extendable foot (7) is provided with a connecting column arranged to pass through the second slot (131) and connected to the bottom of the household appliance.

15. A system of household appliances, characterized in that, the household appliance system comprises a household appliance and the mobile caster lifting mechanism according to any one of claims 1 to 14, and the base (1) is mounted on the bottom of the household appliance.

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