Height adjusting device and household appliance

Abstract

The utility model provides a height adjusting device and a household appliance, and the height adjusting device comprises a seat body which is provided with a mounting cavity which is open towards a to-be-supported surface; the bottom foot assembly is movably connected to the interior of the mounting cavity; the adjusting assembly comprises an operating rod and an adjusting rod, the operating rod is rotationally connected to the base body around the axis of the operating rod, the operating rod is provided with an operating end, the operating end is exposed towards the outer side of the base body, one end of the adjusting rod is in threaded connection with the end, away from the operating end, of the operating rod, and the other end of the adjusting rod is in threaded connection with the base body. The other end of the adjusting rod acts on the bottom foot assembly so as to adjust the distance between the seat body and the to-be-supported surface; a limiting structure is arranged between the operating rod and the seat body and is used for preventing the operating rod from axially disengaging relative to the seat body; the adjusting stability of the height adjusting device is improved, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of household appliances, in particular to a height adjusting device and a household appliance with the same. BACKGROUND

[0002] Generally, household appliances, such as refrigerators, are placed on a horizontal ground, and there is no need to adjust the level of the refrigerator. However, it is difficult to guarantee that the ground in a user's home is horizontal. On the one hand, this can cause the refrigerator to be tilted, which can increase the noise of the refrigerator and even affect the use performance of the refrigerator. On the other hand, if the refrigerator is an embedded refrigerator embedded in a cabinet / wall, when the ground is uneven, even if there is only a few millimeters of protrusion or depression at one end, there will be a large deviation at the other end, which can cause the refrigerator to be unable to be placed centrally.

[0003] Chinese Utility Model Patent No. CN 217465085U discloses a support base, a refrigeration device and a clothes processing device. The support base includes a base body, a roller and a lifting device. The roller is used to rollingly contact a bearing surface. The lifting device includes a roller mounting seat pivotally connected to the base body and an extension member. The roller is connected to the roller mounting seat. The extension member is two screw rods that are threadedly connected to each other. One of the screw rods extends forward, and the front end of the screw rod forms an operation structure for a user to operate. By rotating the front screw rod through the operation structure, the rear screw rod is driven to move forward and backward to drive the lifting device to lift the roller. However, when the user rotates the front screw rod, the front screw rod is also likely to move in the forward and backward directions, which can cause the lifting device to be unable to lift the roller. Furthermore, the front screw rod can fall off the base body, which can cause the entire base foot adjusting structure to fail and affect the user's experience. SUMMARY

[0004] The present application aims to provide a height adjusting device and a household appliance with the same.

[0005] To achieve the above-mentioned application purposes, the present application adopts the following technical solutions: a height adjusting device, comprising:

[0006] a seat body having a mounting cavity open toward a surface to be supported;

[0007] a base foot assembly movably connected in the mounting cavity;

[0008] an adjusting assembly including an operation rod and an adjusting rod. The operation rod is rotationally connected to the seat body about an axis thereof. The operation rod has an operation end exposed to the outside of the seat body. One end of the adjusting rod is threadedly connected to an end of the operation rod away from the operation end, and the other end of the adjusting rod acts on the base foot assembly to adjust the distance between the seat body and the surface to be supported.

[0009] A limiting structure is provided between the operating lever and the base body to prevent the operating lever from axially disengaging relative to the base body.

[0010] As a further improvement of this application, the base has a through hole for the operating rod to pass through; the limiting structure is provided on the operating rod and located on both sides of the through hole in the axial direction.

[0011] As a further improvement of this application, the operating lever includes a first lever segment and a second lever segment connected to each other, the end of the first lever segment away from the second lever segment is the operating end, and the adjusting rod is threadedly connected to the second lever segment;

[0012] The diameter of the first rod segment is smaller than the diameter of the second rod segment, a step is formed at the connection between the first rod segment and the second rod segment, and the diameter of the through hole is not smaller than the diameter of the first rod segment and the diameter of the through hole is smaller than the diameter of the second rod segment.

[0013] The limiting structure includes the stepped portion and a stop member detachably connected to the first rod segment. The stop member is located on the side of the through hole away from the stepped portion, and the dimension of the stop member in at least one radial direction is larger than the diameter of the through hole.

[0014] As a further improvement to this application, the stop is a nut threadedly connected to the first rod segment.

[0015] As a further improvement of this application, the seat includes a front wall located on the side where the loading and unloading port of the object to be carried is located; the operating end is exposed forward from the front wall.

[0016] As a further improvement of this application, the height adjustment device includes two foot assemblies spaced apart on the seat body in the front-to-back direction, each foot assembly corresponding to one adjustment assembly, and the two adjustment assemblies being disposed on the left and right sides of the foot assembly respectively.

[0017] As a further improvement of this application, the foot assembly is movably connected to the mounting cavity in a first direction perpendicular to the surface to be supported;

[0018] The adjustment assembly further includes a drive block connected to the end of the adjustment rod away from the operating rod, the drive block being located within the mounting cavity; the drive block and the base assembly have a first mating part and a second mating part that cooperate with each other, at least one of the first mating part and the second mating part being an inclined surface that is inclined in the moving direction of the adjustment rod.

[0019] As a further improvement of this application, the adjusting rod is L-shaped, and the adjusting rod includes a third rod segment threadedly connected to the operating rod, and a fourth rod segment connected to the end of the third rod segment away from the operating rod, the fourth rod segment being connected to the driving block; the moving direction of the adjusting rod is the axial direction of the third rod segment.

[0020] As a further improvement of this application, the third rod segment is located outside the mounting cavity; the cavity wall surrounding the mounting cavity includes two first cavity walls that are perpendicular to and opposite to the axial direction of the fourth rod segment, and the two first cavity walls are provided with first guide grooves extending along the axial direction of the third rod segment, and the fourth rod segment is movably connected in the first guide grooves.

[0021] As a further improvement to this application, the seat body includes:

[0022] A first plate parallel to the surface to be supported, the first plate having a through opening;

[0023] The cavity is installed at the opening, and the cavity is detachably connected to the side of the first plate away from the surface to be supported. The cavity forms the mounting cavity, and the cavity wall forming the mounting cavity is provided with a second guide groove extending in a first direction. The opening of the second guide groove is open towards the first plate, and the first plate closes the opening of the second guide groove. The foot assembly is provided with a guide shaft that cooperates with the second guide groove.

[0024] As a further improvement of this application, the foot assembly includes a movable frame rotatably mounted in the mounting cavity and a foot connected to the side of the movable frame facing the surface to be supported; the adjusting rod is connected to the movable frame to drive the movable frame to rotate.

[0025] As a further improvement of this application, the adjusting rod is L-shaped, and the adjusting rod includes a third rod segment threadedly connected to the operating rod, and a fourth rod segment connected to the end of the third rod segment away from the operating rod, and the fourth rod segment is rotatably connected to the movable frame.

[0026] As a further improvement of this application, the cavity wall forming the mounting cavity includes two first cavity walls that are perpendicular to and opposite to the axial direction of the fourth rod segment; the height adjustment device further includes a metal reinforcing plate attached to the inner side of the first cavity wall; the metal reinforcing plate is provided with an arc-shaped groove, and the fourth rod segment is movably connected in the arc-shaped groove.

[0027] As a further improvement of this application, a clearance opening is provided at the position corresponding to the arc-shaped groove in the first cavity wall; the third rod segment is located outside the mounting cavity.

[0028] As a further improvement of this application, the movable frame is provided with a stop flange at the position corresponding to the base, and the stop flange is located on the side of the mounting opening of the mounting cavity facing the surface to be supported.

[0029] As a further improvement of this application, the seat is fixed to the base of the object to be supported;

[0030] Alternatively, the base body can be integrally formed with the base of the object to be supported;

[0031] Alternatively, the foot assembly includes a movable frame movably mounted within the mounting cavity and a foot connected to the side of the movable frame facing the surface to be supported, wherein the foot is a roller;

[0032] Alternatively, the base assembly includes a movable frame movably mounted in the mounting cavity, a base connected to the side of the movable frame facing the surface to be supported, the base being a roller, and the height adjustment device further includes a support leg located at one end of the base body near the loading / unloading port of the object to be supported, the support leg being adjustablely mounted on the base body along the height direction.

[0033] To achieve the above-mentioned objectives, this application also provides a household appliance having the aforementioned height adjustment device.

[0034] The beneficial effects of this application are: by setting the limiting structure to prevent the operating lever from axially disengaging from the base, the range of movement of the operating lever in its axial direction can be limited, so as to avoid the operating lever falling off the base when the user rotates the operating lever, thereby improving the adjustment stability of the height adjustment device and improving the user experience. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a refrigerator according to a specific embodiment of this application;

[0036] Figure 2 This is a schematic diagram of the height adjustment device in the first embodiment of this application;

[0037] Figure 3 yes Figure 2 An exploded view of a set of adjustment components and base components;

[0038] Figure 4 yes Figure 3 An exploded view of the adjustment components;

[0039] Figure 5 This is a schematic diagram of the height adjustment device in the second embodiment of this application;

[0040] Figure 6 yes Figure 5 Exploded view;

[0041] Figure 7 yes Figure 6 A schematic diagram showing the cooperation between the adjusting components and the base components;

[0042] Figure 8 This is a schematic diagram of the height adjustment device in the third embodiment of this application;

[0043] Figure 9 yes Figure 8 Partial exploded view;

[0044] Figure 10 yes Figure 9 An exploded view of the base and metal reinforcing plate in the diagram.

[0045] Among them, 100, refrigerator; 10, 10a, 10b, height adjustment device; 1, base; 11, perforation; 12, mounting cavity; 121, first cavity wall; 1211, first guide groove; 1212, second guide groove; 1212a, slot opening; 1213, clearance opening; 13, first plate; 131, opening; 14, peripheral wall; 15, cavity; 2, adjustment assembly; 21, operating lever; 211, hexagonal countersunk hole; 21 2. First rod segment; 213. Second rod segment; 22. Adjusting rod; 221. Third rod segment; 222. Fourth rod segment; 23. Drive block; 231. First mating part; 3. Base assembly; 31. Movable frame; 311. Second mating part; 312. Guide shaft; 32. Base; 33. Stop flange; 4a. Step part; 4b. Stop piece; 5. Metal reinforcing plate; 51. Arc groove; 6. Metal connecting plate; 7. Support leg. Detailed Implementation

[0046] The present application will now be described in detail with reference to the embodiments shown in the accompanying drawings. Please refer to the following description. Figures 1-10 The embodiments shown are preferred embodiments of this application. However, it should be noted that these embodiments are not intended to limit this application, and any equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are within the protection scope of this application.

[0047] In the illustrations of this application, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structures or parts; therefore, they are only used to illustrate the basic structure of the subject matter of this application.

[0048] It should be noted that, in the description of this application, for ease of description, the side where the opening of the household appliance is located is considered "front," and the other directions "rear," "left," and "right" are all relative to "front." It is understood that this is merely for ease of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation; therefore, it should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Furthermore, it should be noted that, in the description of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] Please refer to Figures 1-4 As shown, this application provides a height adjustment device 10. The height adjustment device 10 is fixed to the bottom of the object to be supported, so that the object to be supported is placed on the support surface. Thus, when the object to be supported is tilted, the height of the object to be supported and the corresponding position of the height adjustment device 10 can be adjusted by adjusting the height of the height adjustment device 10, thereby adjusting the level of the object to be supported and avoiding the tilting problem caused by the flatness of the support surface, achieving horizontal placement, which is safe and reliable.

[0051] This application also provides a household appliance having the height adjustment device 10. The household appliance includes, but is not limited to, refrigerators 100, freezers, refrigerators, washing machines, dryers, washer-dryers, and other household appliances requiring leveling. It is understood that, for the household appliance having the height adjustment device 10, the aforementioned term "object to be supported" refers to the household appliance. Below, taking a refrigerator 100 as an example, the structure and principle of the height adjustment device 10 in this application will be specifically described, but this is not a limitation.

[0052] Meanwhile, the aforementioned "surface to be supported" can be any feasible plane, inclined plane, curved surface, etc. For example, it can be the ground, tabletop, step surface, etc. Below, taking the ground as the surface to be supported as an example, the structure and principle of the height adjustment device 10 in this application will be specifically described.

[0053] Combination Figures 2-4As shown, the height adjustment device 10 includes a base 1, an adjustment component 2 connected to the base 1, and a foot component 3 linked to the adjustment component 2. After the height adjustment device 10 is installed on the bottom of the refrigerator 100 and supported on the ground, the foot component 3 is supported on the ground. By adjusting the height of the foot in the foot component 3 from the base 1 through the adjustment component 2, the height of the refrigerator 100 at the corresponding position of the foot component 3 from the ground can be adjusted, thereby achieving the leveling of the refrigerator 100.

[0054] In this embodiment, the height adjustment device 10 has a modular structure. After assembling the adjustment component 2 and the foot component 3 onto the base 1, the base 1 can be directly fixed to the bottom of the refrigerator 100, specifically to the underside of the base. This simplifies the installation and disassembly of the height adjustment device 10 and facilitates the modular assembly of the refrigerator 100. However, this is not a limitation. In other embodiments, the base 1 and the base can be integrally formed, meaning the base 1 is part of the base. After the base is assembled to the bottom of the refrigerator 100 and foaming is completed, the adjustment component 2 and the foot component 3 can be fixed to the corresponding positions of the base 1 on the base.

[0055] The adjustment assembly 2 includes an operating rod 21 and an adjusting rod 22 that are movably connected to each other. The operating rod 21 is rotatably connected to the base 1 about its axis. The operating rod 21 has an operating end for user operation, which is exposed to the outside of the base 1 so that the user can rotate the operating rod 21 through the operating end. One end of the adjusting rod 22 is threadedly connected to the end of the operating rod 21 away from the operating end, and the other end acts on the foot assembly 3. When the user rotates the operating rod 21 through the operating end, the threaded structure drives the adjusting rod 22 to move axially and telescopically along the operating rod 21 to adjust the height of the foot assembly 3, thereby adjusting the distance between the base 1 and the ground to achieve the leveling of the refrigerator 100.

[0056] In one specific embodiment, the operating end has an outwardly exposed non-circular countersunk hole 211, such as a hexagonal countersunk hole, so that the user can drive the operating lever 21 to rotate using a wrench adapted to the non-circular countersunk hole 211. Of course, this is not a limitation.

[0057] A limiting structure is provided between the operating lever 21 and the base 1 to prevent the operating lever 21 from axially disengaging relative to the base 1. That is, in this application, by providing the limiting structure to prevent the operating lever 21 from axially disengaging relative to the base 1, the range of axial movement of the operating lever 21 when the user operates it can be limited. This prevents the operating lever 21 from detaching from the base 1 when the user rotates it, thus avoiding the height adjustment device 10 from malfunctioning. This improves the adjustment stability of the height adjustment device 10 and enhances the user experience.

[0058] The base 1 has a through hole 11 through which the operating rod 21 passes. That is, the operating rod 21 is rotatably connected to the base 1 by passing through the through hole 11, and the operating end is located outside the through hole 11, so that the operating end is exposed to the outside of the base 1, making it convenient for the user to rotate the operating rod 21 through the operating end.

[0059] In some optional embodiments, the limiting structure is disposed on the operating rod 21 and located on both axial sides of the through hole 11. This can effectively limit the axial movement range of the operating rod 21. At the same time, setting the limiting structure on opposite axial sides of the through hole 11 will not affect the rotation of the operating rod 21, thereby not affecting the adjustment of the height adjustment device 10.

[0060] In one specific embodiment, the side where the refrigerator 100 has its retrieval opening is defined as the front side, and the base 1 includes a front wall located on the side where the retrieval opening of the refrigerator 100 is located. The operating end is configured to expose forward from the front wall; it is known that, in this embodiment, the aforementioned perforation 11 is located on the front wall. This facilitates leveling the refrigerator 100 from the front side, making the leveling operation convenient and particularly suitable for leveling built-in refrigerators 100.

[0061] In one specific embodiment, the operating lever 21 includes a first lever segment 212 and a second lever segment 213 connected to each other. The diameter of the first lever segment 212 is smaller than the diameter of the second lever segment 213. A step portion 4a is formed at the connection between the first lever segment 212 and the second lever segment 213. The diameter of the through hole 11 is not smaller than the diameter of the first lever segment 212, and the diameter of the through hole 11 is smaller than the diameter of the second lever segment 213. The end of the first lever segment 212 away from the second lever segment 213 is the operating end, and the adjusting rod 22 is threadedly connected to the second lever segment 213. By setting the diameter of the second rod segment 213 to be relatively large, on the one hand, a step portion 4a is formed at the connection between the first rod segment 212 and the second rod segment 213. This step portion 4a is part of the limiting structure, which can restrict the movement of the operating rod 21 to the outside of the seat body 1, thereby preventing the operating rod 21 from falling outward. That is, it restricts the forward movement of the operating rod 21 and prevents the operating rod 21 from falling forward. On the other hand, it also facilitates the threaded connection between the second rod segment 213 and the adjusting rod 22 by sleeved on the adjusting rod 22.

[0062] In one specific embodiment, the first rod segment 212 and the second rod segment 213 are an integral connecting rod. This simplifies the structure of the operating lever 21 and improves its stability.

[0063] The limiting structure includes the stepped portion 4a and a stop 4b detachably connected to the first rod segment 212. After the stop 4b is installed on the first rod segment 212, the stop 4b is located on the side of the through hole 11 away from the stepped portion 4a, and the dimension of the stop 4b is larger than the diameter of the through hole 11 in at least one radial direction. That is, the stop 4b is located on the front side of the through hole 11, thereby limiting the operating rod 21 from the front side of the through hole 11 and restricting the operating rod 21 from moving backward, while the stepped portion 4a limits the operating rod 21 from the rear side of the through hole 11 and restricts the operating rod 21 from moving forward. Through the cooperation between the stop 4b and the stepped portion 4a located on opposite axial sides of the through hole 11, reliable bidirectional axial limiting of the operating rod 21 is achieved, thereby preventing the operating rod 21 from axially disengaging relative to the seat body 1.

[0064] It is understood that after the operating lever 21 is installed on the base 1, the distance between the step portion 4a and the through hole and the distance between the stop member 4b and the through hole can be set as small as possible, as long as it does not affect the rotation of the operating lever 21, thereby further improving the stability of the height adjustment device.

[0065] Meanwhile, in this application, the stop 4b is configured to be detachably connected to the first rod segment 212. When installing the adjustment assembly 2, the first rod segment 212 can be passed through the through hole 11 from the rear side, and then the stop 4b can be installed on the first rod segment 212. Similarly, when disassembling the adjustment assembly 2, the stop 4b can be removed from the first rod segment 212 first, and then the operating rod 21 can be moved backward so that the first rod segment 212 is disengaged from the through hole 11. This facilitates the installation and disassembly of the adjustment assembly 2 and the base 1, and also provides a good axial limiting effect for the operating rod 21.

[0066] In one specific embodiment, the stop 4b is a nut threadedly connected to the first rod segment 212, which has a simple structure and facilitates the installation and disassembly of the stop 4b. Of course, this is not a limitation; in other embodiments, the stop 4b can also be configured as a stop 4b embedded in the first rod segment 212, or the stop 4b and the first rod segment 212 can be connected in other ways, or even be fixedly connected.

[0067] The base 1 has a mounting cavity 12 that opens towards the surface to be supported, and the foot assembly 3 is movably connected within the mounting cavity 12. The end of the adjusting rod 22 away from the operating rod 21 extends into the mounting cavity 12 and acts on the foot assembly 3; that is, the adjusting rod 22 and the foot assembly 3 are linked. Specifically, the mounting cavity 12 opens towards the ground, i.e., it opens downwards to accommodate the foot assembly 3, while simultaneously allowing the foot 32 in the foot assembly 3 to protrude downwards beyond the mounting cavity 12 and be supported on the ground.

[0068] In one specific embodiment, the base assembly 3 includes a movable frame 31 movably mounted within the mounting cavity 12 and a base 32 connected to the side of the movable frame 31 facing the ground. The base 32 extends downward from the lower side of the mounting cavity 12 and is exposed on the outer side of the mounting cavity 12, and is supported on the ground. The adjusting rod 22 acts on the movable frame 31, driving the movable frame 31 to move through the adjusting assembly 2, thereby moving the base 32 up and down, adjusting the height of the base 32 from the base body 1, and further adjusting the height of the base body 1 from the ground, thus achieving height adjustment of the refrigerator 100 at a preset position and leveling the refrigerator 100.

[0069] In one specific embodiment, the base 32 is a roller rotatably connected to the movable frame 31. The height adjustment device in this application, by setting the base 32 as a roller, allows the refrigerator 100 to be supported on the ground by the roller, facilitating the user to push the refrigerator 100 to adjust its placement. Of course, this is not a limitation; in other embodiments, the base 32 can also be a non-rolling support leg. Alternatively, when the height adjustment device 10 includes multiple sets of the base assemblies 3, some base assemblies 3 may have base 32s that are rollers, while others may have base 32s that are non-rolling supports.

[0070] Combination Figures 2-4 The image shows the height adjustment device 10 according to the first embodiment of this application. In this embodiment, the base assembly 3 is movably connected to the mounting cavity 12 along a first direction perpendicular to the surface to be supported, that is, the base assembly 3 / movable frame 31 is movably connected to the mounting cavity 12 along a vertical / height / vertical direction perpendicular to the ground.

[0071] The adjustment assembly 2 further includes a drive block 23 connected to the end of the adjustment rod 22 away from the operating rod 21, and the drive block 23 is located within the mounting cavity 12. The drive block 23 and the foot assembly 3 have a first mating portion 231 and a second mating portion 311 that cooperate with each other; that is, the drive block 23 and the movable frame 31 have a first mating portion 231 and a second mating portion 311 that cooperate with each other. At least one of the first mating portion 231 and the second mating portion 311 is an inclined surface inclined in the moving direction of the adjustment rod 22. The moving direction of the adjustment rod 22 refers to the axial direction of the operating rod 21. In the embodiment where the operating rod 21 extends in the front-back direction, the moving direction of the adjustment rod 22 refers to the front-back direction, and the first mating portion 231 and / or the second mating portion 311 are inclined surfaces inclined in the front-back direction. Through the cooperation between the drive block 23 and the foot assembly 3, the rotational action applied by the user's operating end can be converted into vertical movement of the foot assembly 3.

[0072] In one specific embodiment, the first mating part 231 and the second mating part 311 are both mutually mating inclined surfaces, specifically inclined surfaces extending downwards from front to back. This improves the mating stability and guiding effect between the drive block 23 and the movable frame 31.

[0073] In some optional embodiments, the adjusting rod 22 is L-shaped and includes a third rod segment 221 threadedly connected to the operating rod 21, and a fourth rod segment 222 connected to the end of the third rod segment 221 away from the operating rod 21. The fourth rod segment 222 is connected to the driving block 23. That is, the third rod segment 221 extends in the front-back direction, and the fourth rod segment 222 extends in the left-right direction and passes through the driving block 23 in the left-right direction, simplifying the connection between the adjusting rod 22 and the driving block 23 and improving the stability of the connection between the adjusting rod 22 and the driving block 23. In this case, the moving direction of the adjusting rod 22 is the axial direction of the third rod segment 221, that is, the front-back direction.

[0074] In some optional embodiments, the third rod segment 221 is located outside the mounting cavity 12, specifically on the left or right side outside the mounting cavity 12. The cavity wall surrounding the mounting cavity 12 includes two first cavity walls 121 that are perpendicular to and opposite to the axial direction of the fourth rod segment 222, i.e., two first cavity walls 121 that are opposite to each other in the left-right direction. The two first cavity walls 121 are provided with first guide grooves 1211 extending along the axial direction of the third rod segment 221, and the fourth rod segment 222 is movably connected to the first guide grooves 1211. When the operating rod 21 / third rod segment 221 extends in the front-back direction, the first guide grooves 1211 are guide grooves extending in the front-back direction. The fourth rod segment 222 is movably connected to the first guide groove 1211 at the opposite sides of the drive block 23. On the one hand, it can guide the movement direction of the drive block 23 and improve the stability of the height adjustment device 10. On the other hand, the fourth rod segment 222 is supported in the first guide groove 1211, thereby limiting the drive block 23 to a preset height and preventing the height of the drive block 23 from shifting under the gravity of the refrigerator 100. This also improves the stability of the height adjustment device 10.

[0075] In this embodiment, the cavity wall of the mounting cavity 12 is provided with a second guide groove 1212 extending along the first direction, that is, a second guide groove 1212 extending along the height direction / vertical direction / up and down direction. The movable frame 31 is provided with a guide shaft 312 that cooperates with the second guide groove 1212. Through the cooperation between the guide shaft 312 and the second guide groove 1212, the precise guidance of the foot assembly 3 can be achieved, that is, the precise guidance of the movable frame 31 can be achieved, improving the stability of the height adjustment device 10 adjustment, thereby ensuring the stability and accuracy of the foot assembly 3 when adjusting up and down.

[0076] In one specific embodiment, the seat 1 includes a first plate 13 parallel to the ground and a cavity 15. The first plate 13 has a through opening 131, and the cavity 15 is mounted on the upper side of the first plate 13 at the opening 131. In this embodiment, the first plate 13 is the base plate of the seat 1. The seat 1 also includes a peripheral wall 14 extending upward from the periphery of the base plate, the peripheral wall 14 and the base plate together forming a receiving space for accommodating the cavity 15 and the adjustment assembly 2. It is understood that the aforementioned front wall refers to one side wall of the peripheral wall 14 located on the front side.

[0077] The cavity 15 is detachably connected to the side of the first plate 13 opposite to the surface to be supported, that is, the cavity 15 is detachably connected to the upper side of the first plate 13. The cavity 15 forms the mounting cavity 12, that is, the cavity 15 includes a cavity wall surrounding the mounting cavity 12. The opening 1212a of the second guide groove 1212, provided on the cavity wall extending vertically, opens towards the first plate 13. When the cavity 15 is fixed to the first plate 13, the first plate 13 closes the opening 1212a of the second guide groove 1212. This facilitates the assembly between the movable frame 31 and the mounting cavity 12. That is, the guide shaft 312 is first inserted into the second guide groove 1212 from the slot 1212a to assemble the movable frame 31 and the mounting cavity 12, and then the cavity 15 is fixed to the first plate 13. This can close the slot 1212a, limit the downward movement range of the movable frame 31, and prevent the movable frame 31 from falling off relative to the mounting cavity 12.

[0078] In some optional embodiments, the base 1 has two mounting cavities 12 spaced apart in the front-to-back direction. The height adjustment device 10 includes two foot assemblies 3 spaced apart on the base 1 in the front-to-back direction. Each foot assembly 3 corresponds to one adjustment assembly 2, and the two adjustment assemblies 2 are located on the left and right sides of the foot assembly 3, respectively. The operating ends of both adjustment assemblies 2 are exposed forward from the front side of the base 1. Therefore, the front-to-back height of the refrigerator 100 can be adjusted from the front side of the refrigerator 100, facilitating user operation.

[0079] In one specific embodiment, the refrigerator 100 includes two height adjustment devices 10 disposed on the left and right sides of the base, and each height adjustment device 10 includes two sets of base assemblies 3 disposed on the front and rear sides and a corresponding adjustment assembly 2. Thus, the height of the four corners of the refrigerator 100 can be adjusted from the front side of the refrigerator 100 as needed, which is beneficial for the horizontal adjustment of the refrigerator 100.

[0080] Combination Figures 5-7As shown, this is the height adjustment device 10a in the second embodiment of this application. The difference between the height adjustment device 10a in the second embodiment and the height adjustment device 10 in the first embodiment is that the movable frame 31 is rotatably installed in the mounting cavity 12, and the adjusting rod 22 is rotatably connected to the movable frame 31 to drive the movable frame 31 to rotate. By driving the movable frame 31 to rotate, the distance between the base 32 and the seat 1 is adjusted, thereby adjusting the distance between the seat 1 and the ground to adjust the level of the refrigerator 100.

[0081] In this embodiment, the first plate 13 of the base 1 is the top plate of the base 1, and the peripheral wall 14 of the base 1 extends downward from the periphery of the top plate. Furthermore, compared to the first embodiment, this embodiment does not include the cavity 15 forming the mounting cavity 12; the top plate and the peripheral wall 14 together form the mounting cavity 12. In this case, the left and right walls of the peripheral wall 14, which are arranged opposite to each other, correspond to the two first cavity walls 121 in the first embodiment, and the movable frame 31 is rotatably connected to the left and right walls.

[0082] In some optional embodiments, a stop flange 33 is provided at a position corresponding to the base 32 on the movable frame 31. The stop flange 33 abuts against the side of the mounting opening of the mounting cavity 12 facing the surface to be supported, that is, the stop flange 33 is located below the left and right walls. When the adjusting rod 22 drives the movable frame 31 to rotate upward until the stop flange 33 abuts against the lower part of the left / right wall, the upward rotation of the movable frame 31 can be restricted, and the minimum distance between the base 32 and the seat 1 can be limited. That is, by setting the stop flange 33, the upward rotation stroke of the movable frame 31 can be limited, the minimum distance between the base 32 and the seat 1 can be limited, and the minimum height of the corresponding position of the refrigerator 100 can be limited.

[0083] The second embodiment of this application is identical to the first embodiment except for the differences mentioned above, and will not be repeated here.

[0084] Combination Figures 8-10 As shown, this is the height adjustment device 10b in the third embodiment of this application. The difference between this third embodiment and the second embodiment is that the height adjustment device 10b further includes a metal reinforcing plate 5 attached to the inner side of the first cavity wall 121. That is, the metal reinforcing plate 5 is attached to the inner side of the left wall and the inner side of the right wall. The metal reinforcing plate 5 is provided with an arc-shaped groove 51, and the fourth rod segment 222 is movably connected to the arc-shaped groove 51. By providing the arc-shaped groove 51 movably connected to the fourth rod segment 222, the movement range of the fourth rod segment 222 can be limited, thereby limiting the rotation range of the movable frame 31, and thus limiting the adjustment range of the base 32.

[0085] In this embodiment, by adding a metal reinforcing plate 5, the strength of the entire height adjustment device 10b can be guaranteed, and the overall lightweight design of the height adjustment device 10b can be achieved.

[0086] Specifically, the height adjustment device 10b further includes a metal connecting plate 6 connecting the top ends of the two metal reinforcing plates 5. The metal connecting plate 6 is an integral U-shaped metal plate with the metal reinforcing plates 5. By fixing the metal connecting plate 6 to the first plate 13, the two metal plates can be placed against the inner side of the corresponding first cavity wall 121.

[0087] In one specific embodiment, a clearance opening 1213 is provided at the position corresponding to the arc-shaped groove 51 in the first cavity wall 121; the third rod segment 221 is located outside the mounting cavity 12, specifically on the left or right side outside the mounting cavity 12. This avoids interference between the adjusting rod 22 and the seat 1.

[0088] In embodiments where the base 32 in the base assembly 3 is a roller, in some optional embodiments, the height adjustment device 10b further includes a support leg 7 located at one end of the base 1 near the loading / unloading port of the object to be supported. The support leg 7 is adjustablely mounted on the base 1 along the height direction. That is, the height adjustment device 10b also includes a support leg 7 located on the front side of the base 1. This support leg 7 is not a roller. After leveling, by adjusting the support leg 7 to support the ground, the refrigerator 100 can be positioned to prevent the refrigerator 100 from moving.

[0089] In one specific embodiment, the support leg 7 includes a threaded rod, and the support leg 7 is threadedly connected to the base 1 via the threaded rod, so that the support leg 7 can be adjusted and installed on the base 1 in the height direction. Of course, this is not a limitation.

[0090] The third embodiment of this application is the same as the second embodiment except for the differences mentioned above, and will not be described again here.

[0091] In summary, the height adjustment device 10 of this application, by providing a limiting structure to prevent the operating lever 21 from axially dislodging from the seat 1, can limit the range of movement of the operating lever 21 in its axial direction, thereby preventing the operating lever 21 from falling off the seat 1 when the user rotates it, improving the adjustment stability of the height adjustment device 10, and enhancing the user experience.

[0092] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0093] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this application and are not intended to limit the scope of protection of this application. All equivalent implementation methods or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this application.

Claims

1. A height adjustment device, characterized in that, include: A base having a mounting cavity that opens toward the surface to be supported; A base assembly, which is movably connected within the mounting cavity; An adjustment assembly includes an operating lever and an adjustment lever. The operating lever is rotatably connected to the base body about its axis. The operating lever has an operating end that is exposed to the outside of the base body. One end of the adjustment lever is threaded to the end of the operating lever away from the operating end, and the other end acts on the foot assembly to adjust the distance between the base body and the surface to be supported. A limiting structure is provided between the operating lever and the base body to prevent the operating lever from axially disengaging relative to the base body.

2. The height adjustment device as described in claim 1, characterized in that: The base has a through hole through which the operating rod passes; the limiting structure is provided on the operating rod and located on both sides of the through hole in the axial direction.

3. The height adjustment device as described in claim 2, characterized in that, The operating lever includes a first segment and a second segment connected to each other. The end of the first segment away from the second segment is the operating end. The adjusting rod is threadedly connected to the second segment. The diameter of the first rod segment is smaller than the diameter of the second rod segment, a step is formed at the connection between the first rod segment and the second rod segment, and the diameter of the through hole is not smaller than the diameter of the first rod segment and the diameter of the through hole is smaller than the diameter of the second rod segment. The limiting structure includes the stepped portion and a stop member detachably connected to the first rod segment. The stop member is located on the side of the through hole away from the stepped portion, and the dimension of the stop member in at least one radial direction is larger than the diameter of the through hole.

4. The height adjustment device as described in claim 3, characterized in that, The stop is a nut threadedly connected to the first rod segment.

5. The height adjustment device as described in claim 1, characterized in that, The seat includes a front wall located on the side where the loading and unloading port of the object to be carried is located; the operating end is exposed forward from the front wall.

6. The height adjustment device as described in claim 5, characterized in that, The height adjustment device includes two foot assemblies spaced apart on the seat body in the front-to-back direction. Each foot assembly corresponds to one adjustment assembly, and the two adjustment assemblies are respectively located on the left and right sides of the foot assembly.

7. The height adjustment device according to any one of claims 1 to 6, characterized in that, The base assembly is movably connected to the mounting cavity along a first direction perpendicular to the surface to be supported; The adjustment assembly further includes a drive block connected to the end of the adjustment rod away from the operating rod, the drive block being located within the mounting cavity; the drive block and the base assembly have a first mating part and a second mating part that cooperate with each other, at least one of the first mating part and the second mating part being an inclined surface that is inclined in the moving direction of the adjustment rod.

8. The height adjustment device as described in claim 7, characterized in that, The adjusting rod is L-shaped and includes a third rod segment threadedly connected to the operating rod, and a fourth rod segment connected to the end of the third rod segment away from the operating rod. The fourth rod segment is connected to the driving block. The moving direction of the adjusting rod is the axial direction of the third rod segment.

9. The height adjustment device as described in claim 8, characterized in that, The third rod segment is located outside the mounting cavity; the cavity wall surrounding the mounting cavity includes two first cavity walls that are perpendicular to and opposite to the axial direction of the fourth rod segment, and the two first cavity walls are provided with first guide grooves extending along the axial direction of the third rod segment, and the fourth rod segment is movably connected in the first guide grooves.

10. The height adjustment device as described in claim 7, characterized in that, The seat body includes: A first plate parallel to the surface to be supported, the first plate having a through opening; The cavity is installed at the opening, and the cavity is detachably connected to the side of the first plate away from the surface to be supported. The cavity forms the mounting cavity, and the cavity wall forming the mounting cavity is provided with a second guide groove extending in a first direction. The opening of the second guide groove is open towards the first plate, and the first plate closes the opening of the second guide groove. The foot assembly is provided with a guide shaft that cooperates with the second guide groove.

11. The height adjustment device according to any one of claims 1 to 6, characterized in that, The foot assembly includes a movable frame rotatably mounted in the mounting cavity and a foot connected to the side of the movable frame facing the surface to be supported. The adjusting rod is connected to the movable frame to drive the movable frame to rotate.

12. The height adjustment device as claimed in claim 11, characterized in that, The adjusting rod is L-shaped and includes a third rod segment threadedly connected to the operating rod and a fourth rod segment connected to the end of the third rod segment away from the operating rod. The fourth rod segment is rotatably connected to the movable frame.

13. The height adjustment device as described in claim 12, characterized in that, The cavity wall forming the mounting cavity includes two first cavity walls that are perpendicular to and opposite to the axial direction of the fourth rod segment; the height adjustment device also includes a metal reinforcing plate attached to the inner side of the first cavity wall; the metal reinforcing plate is provided with an arc-shaped groove, and the fourth rod segment is movably connected in the arc-shaped groove.

14. The height adjustment device as described in claim 13, characterized in that, The first cavity wall has a clearance opening at the position corresponding to the arc-shaped groove; the third rod segment is located outside the mounting cavity.

15. The height adjustment device as claimed in claim 11, characterized in that, The movable frame is provided with a stop flange at the position corresponding to the base, and the stop flange is located on the side of the mounting cavity facing the surface to be supported.

16. The height adjustment device as claimed in claim 1, characterized in that, The base is fixed to the base of the object to be supported; Alternatively, the base body can be integrally formed with the base of the object to be supported; Alternatively, the foot assembly includes a movable frame movably mounted within the mounting cavity and a foot connected to the side of the movable frame facing the surface to be supported, wherein the foot is a roller; Alternatively, the base assembly includes a movable frame movably mounted in the mounting cavity, a base connected to the side of the movable frame facing the surface to be supported, the base being a roller, and the height adjustment device further includes a support leg located at one end of the base body near the loading / unloading port of the object to be supported, the support leg being adjustablely mounted on the base body along the height direction.

17. A household appliance, characterized in that, The household appliance has a height adjustment device as described in any one of claims 1 to 16.

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