Box body assembly and refrigerator

Abstract

The invention relates to the technical field of refrigerators, and discloses a box body assembly. The box body assembly comprises a box body and a door body arranged on the box body, and further comprises a lower hinge which comprises a lower hinge plate arranged on the box body and a hinge shaft arranged on the lower hinge plate; the suspension mechanism comprises a permanent magnet and an electromagnet assembly; the permanent magnet sleeves the hinge shaft and is positioned on the upper side of the lower hinge plate; the electromagnet assembly is arranged on the door body, arranged on the hinge shaft in a sleeving mode and located on the upper side of the permanent magnet. In the door opening and closing process, the electromagnet assembly can be powered on and generate a magnetic field repelling the permanent magnet, and the electromagnet assembly and the permanent magnet repel each other so as to provide upward magnetic force for the door body and enable the door body to suspend. By arranging the suspension mechanism, the door body can be suspended in the door opening and closing process, friction between the door body and the lower hinge is reduced, labor is saved in door opening and closing, and meanwhile the suspension mechanism of the box assembly is simple in structure. The invention further discloses the refrigerator.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerators, for example, to a cabinet assembly and a refrigerator. Background Art

[0002] With the upgrading of the refrigerator consumption market, high-end refrigerators and large refrigerators are becoming more and more popular among consumers. However, as the volume of refrigerators increases, the weight and load limit of refrigerator doors are getting larger and larger, and users need to spend more effort to pull the refrigerator doors, which affects the experience of opening and closing the refrigerator doors.

[0003] In the related art, an upper magnetic suspension mechanism is provided at the hinge between the upper part of the refrigerator door and the upper part of the refrigerator body; a lower magnetic suspension mechanism is provided at the hinge between the lower part of the refrigerator door and the lower part of the refrigerator body; the upper magnetic suspension mechanism and the lower magnetic suspension mechanism jointly provide an upward magnetic force to the refrigerator door, and the magnetic force overcomes all or part of the gravity of the refrigerator door. The upper magnetic suspension mechanism includes a protective sleeve, an electromagnet ring, and a permanent magnet ring; the protective sleeve is cylindrical, the electromagnet ring is fixed in the protective sleeve, and the permanent magnet ring is connected to the protective sleeve by a needle bearing; the permanent magnet ring is located below the electromagnet ring, and a gap is left between the permanent magnet ring and the electromagnet ring, and the permanent magnet ring can float up and down relative to the electromagnet ring; the refrigerator door shaft is fixed in the permanent magnet ring, and the output shaft of the rotary actuator passes downward through the electromagnet ring and is connected to the refrigerator door shaft. The lower magnetic suspension mechanism includes a dust cover, a permanent magnet support ring, a butterfly spring sheet, an electromagnet support seat, and an iron core; an iron core is fixed in the center of the electromagnet support seat, the dust cover is fixed on the electromagnet support seat, the permanent magnet support ring can be rotatably arranged in the dust cover, a needle bearing is connected between the permanent magnet support ring and the inner wall of the dust cover, and a needle bearing is connected between the permanent magnet support ring and the iron core; the permanent magnet support ring can float up and down a certain distance relative to the electromagnet support seat; a butterfly spring sheet is also provided between the permanent magnet support ring and the electromagnet support seat; the refrigerator door shaft is fixed in the permanent magnet support ring.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The structure of the magnetic suspension mechanism in the related art is relatively complex and needs further improvement.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiments provide a cabinet assembly and a refrigerator. By providing a suspension mechanism, the door body can be suspended during the process of opening and closing the door, thereby reducing the friction between the door body and the lower hinge, and achieving labor-saving opening and closing of the door. At the same time, the suspension mechanism structure of the cabinet assembly is relatively simple.

[0009] In some embodiments, the box assembly includes a box and a door body arranged on the box body, and the box assembly also includes: a lower hinge, including a lower hinge plate arranged on the box body and a hinge shaft arranged on the lower hinge plate; a suspension mechanism, including a permanent magnet and an electromagnet assembly; the permanent magnet is sleeved on the hinge shaft and is located on the upper side of the lower hinge plate; the electromagnet assembly is arranged on the door body, and the electromagnet assembly is sleeved on the hinge shaft and is located on the upper side of the permanent magnet; wherein, during the process of opening and closing the door, the electromagnet assembly can be energized and generate a magnetic field that repels the permanent magnet, and the electromagnet assembly and the permanent magnet repel each other to provide an upward magnetic force for the door body, so that the door body is suspended.

[0010] In some embodiments, a connecting hole is provided at the center of the permanent magnet, and the hinge shaft passes through the connecting hole; the upper surface of the permanent magnet includes a plurality of plug-in grooves, the plug-in grooves extend along the axial direction of the permanent magnet, and the plurality of plug-in grooves are evenly distributed along the circumference of the permanent magnet; the lower surface of the electromagnet assembly includes a plurality of plug-in protrusions corresponding to the plug-in grooves; wherein, when the electromagnet assembly is powered off, the electromagnet assembly falls with the door body, and the plug-in protrusions are suitable for entering the plug-in grooves to enable the door body to maintain the current opening angle.

[0011] In some embodiments, a guide ridge is provided between two adjacent plug-in grooves, and the guide ridge includes an upwardly protruding arc surface; wherein an accommodating groove is provided between two adjacent plug-in grooves, and the accommodating groove is used to accommodate the guide ridge.

[0012] In some embodiments, the upper surface of the permanent magnet is tilted downward radially outward along the upper surface of the permanent magnet; the lower surface of the electromagnet assembly is tilted downward radially outward along the lower surface of the electromagnet assembly, so that the plug-in protrusion slides into place along the plug-in groove under the action of gravity.

[0013] In some embodiments, the electromagnet assembly includes: an iron core, which is configured with a hinge shaft groove with an opening facing downward, and the hinge shaft is suitable for inserting into the hinge shaft groove; the iron core includes a first section and a second section located below the first section; and an electromagnet coil, which is wound around the first section of the iron core.

[0014] In some embodiments, the bottom plate of the door body is configured with a mounting hole, the periphery of the mounting hole extends upward to form a support frame; the connection between the second section and the first section extends outward to form a fixing plate, and the fixing plate is mounted on the upper wall of the support frame.

[0015] In some embodiments, the second section of the iron core is located in the internal space of the support frame; the permanent magnet includes a first step portion and a second step portion arranged on the upper side of the first step portion, the outer diameter of the second step portion is smaller than the outer diameter of the first step portion, and the outer diameter of the second step portion matches the inner diameter of the mounting hole; during the suspension process of the door body, at least part of the second step portion is located in the mounting hole.

[0016] In some embodiments, a macro probe is disposed on the upper end surface of the hinge shaft, and the macro probe is used to measure the suspension height of the door body.

[0017] In some embodiments, the suspension mechanism further includes: a connecting gear embedded in the lower surface of the permanent magnet, a avoidance hole corresponding to the connecting hole is provided at the center of the connecting gear, and the avoidance hole is used for interference connection with the hinge shaft.

[0018] In some embodiments, a refrigerator includes the cabinet assembly described above.

[0019] The cabinet assembly and refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The box assembly provided in the embodiment of the present disclosure includes a lower hinge and a suspension mechanism. The lower hinge includes a lower hinge plate arranged on the box body and a hinge shaft arranged on the lower hinge plate. The suspension mechanism includes a permanent magnet and an electromagnet assembly. The permanent magnet is sleeved on the hinge shaft and is located on the upper side of the lower hinge plate. The electromagnet assembly is arranged on the door body, and the electromagnet assembly is sleeved on the hinge shaft and is located on the upper side of the permanent magnet. In the process of opening and closing the door, the electromagnet assembly can be energized and generate a magnetic field that repels the permanent magnet. The electromagnet assembly and the permanent magnet repel each other to provide an upward magnetic force to the door body, so that the door body is suspended. In this way, by setting the suspension mechanism, the door body can be suspended in the process of opening and closing the door, the friction between the door body and the lower hinge is reduced, and the door opening and closing is labor-saving. At the same time, the suspension mechanism of the box assembly only includes a permanent magnet and an electromagnet assembly, and the structure is relatively simple.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of a box assembly provided by an embodiment of the present disclosure;

[0024] Figure 2 It is a partial structural schematic diagram of a box assembly provided by an embodiment of the present disclosure;

[0025] Figure 3 is a partial structural schematic diagram of another box assembly provided by an embodiment of the present disclosure;

[0026] Figure 4 is a schematic structural diagram of a permanent magnet provided by an embodiment of the present disclosure;

[0027] Figure 5 is a partial structural schematic diagram of an electromagnet assembly provided in an embodiment of the present disclosure;

[0028] Figure 6 is a partial cross-sectional schematic diagram of a box assembly provided by an embodiment of the present disclosure;

[0029] Figure 7 is a partial structural schematic diagram of another box assembly provided by an embodiment of the present disclosure;

[0030] Figure 8 It is a partial structural schematic diagram of a box assembly provided by an embodiment of the present disclosure;

[0031] Fig. 9 is a partial structural schematic diagram of another box assembly provided by an embodiment of the present disclosure;

[0032] Fig.10 is a partial structural schematic diagram of another box assembly provided by an embodiment of the present disclosure;

[0033] Fig.11 1 is a relationship diagram among door weight, input voltage and time required for door suspension provided by an embodiment of the present disclosure.

[0034] Reference numerals:

[0035] 100, box body; 200, door body; 201, support frame; 202, handle area; 203, infrared human sensing probe; 204, connecting line; 300, lower hinge; 301, lower hinge plate; 302, hinge shaft; 400, suspension mechanism; 401, permanent magnet; 4011, connecting hole; 4012, plug-in groove; 4013, guide convex strip; 4014, first step portion; 4015, second step portion; 402, electromagnet assembly; 4021, plug-in convex strip; 4022, accommodating groove; 4023, iron core; 4024, electromagnet coil; 4025, fixing plate; 403, macro probe; 404, connecting gear; 405, wire. DETAILED DESCRIPTION

[0036] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0037] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0039] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0040] Unless otherwise stated, the term "plurality" means two or more.

[0041] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0042] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0044] The disclosed embodiments provide a cabinet assembly and a refrigerator. By providing a suspension mechanism, the door body can be suspended during the process of opening and closing the door, thereby reducing the friction between the door body and the lower hinge and achieving labor-saving opening and closing of the door. At the same time, the suspension mechanism structure of the cabinet assembly is relatively simple.

[0045] In a first aspect, an embodiment of the present disclosure provides a box assembly.

[0046] Combination Figures 1 to 11 As shown, the box assembly provided by the embodiment of the present disclosure includes a box 100 , a door 200 , a lower hinge 300 and a suspension mechanism 400 .

[0047] The lower hinge 300 includes a lower hinge plate 301 disposed on the box body 100 and a hinge shaft 302 disposed on the lower hinge plate 301 .

[0048] The suspension mechanism 400 includes a permanent magnet 401 and an electromagnet assembly 402. The permanent magnet 401 is sleeved on the hinge shaft 302 and is located on the upper side of the lower hinge plate 301. The electromagnet assembly 402 is disposed on the door body 200, and is sleeved on the hinge shaft 302 and is located on the upper side of the permanent magnet 401.

[0049] In the process of opening and closing the door, the electromagnet assembly 402 can be energized and generate a magnetic field that repels the permanent magnet 401. The electromagnet assembly 402 and the permanent magnet 401 repel each other to provide an upward magnetic force for the door body 200, so that the door body 200 is suspended.

[0050] The box body 100 assembly provided in the embodiment of the present disclosure includes a lower hinge 300 and a suspension mechanism 400. The lower hinge 300 includes a lower hinge plate 301 provided on the box body 100 and a hinge shaft 302 provided on the lower hinge plate 301. The suspension mechanism 400 includes a permanent magnet 401 and an electromagnet assembly 402. The permanent magnet 401 is sleeved on the hinge shaft 302 and is located on the upper side of the lower hinge plate 301. The electromagnet assembly 402 is provided on the door body 200, and the electromagnet assembly 402 is sleeved on the hinge shaft 302 and is located on the upper side of the permanent magnet 401. In the process of opening and closing the door, the electromagnet assembly 402 can be energized and generate a magnetic field that repels the permanent magnet 401. The electromagnet assembly 402 and the permanent magnet 401 repel each other to provide an upward magnetic force for the door body 200, so that the door body 200 is suspended. In this way, by setting up the suspension mechanism 400, the door body 200 can be suspended during the process of opening and closing the door, reducing the friction between the door body 200 and the lower hinge 300, and realizing labor-saving opening and closing of the door. At the same time, the suspension mechanism 400 of the box body 100 assembly only includes a permanent magnet 401 and an electromagnet assembly 402, and the structure is relatively simple.

[0051] Optionally, the lower hinge plate 301 includes a fixing portion and an extension portion. When the lower hinge 300 is mounted to the box body 100, the lower hinge plate 301 extends in the vertical direction, and the extension portion is arranged at the upper end side of the fixing portion and extends in the horizontal direction. The hinge shaft 302 is arranged at the extension portion, and the hinge shaft 302 extends in the vertical direction.

[0052] Optionally, the fixing portion is fixedly connected to the box body 100 by bolts.

[0053] In some embodiments, in combination Figure 2 , Figure 3 and Figure 4 As shown, a connection hole 4011 is provided at the center of the permanent magnet 401, and the hinge shaft 302 passes through the connection hole 4011. The upper surface of the permanent magnet 401 includes a plurality of plug-in grooves 4012, and the plug-in grooves 4012 extend along the axial direction of the permanent magnet 401, and the plurality of plug-in grooves 4012 are evenly distributed along the circumference of the permanent magnet 401. The lower surface of the electromagnet assembly 402 includes a plurality of plug-in ridges 4021 corresponding to the plug-in grooves 4012. In particular, when the electromagnet assembly 402 is powered off, the electromagnet assembly 402 falls along with the door body 200, and the plug-in ridges 4021 are adapted to enter the plug-in grooves 4012, so that the door body 200 maintains the current door opening angle.

[0054] By providing a plurality of plug-in grooves 4012 on the upper surface of the permanent magnet 401 and a plurality of plug-in convex strips 4021 on the lower surface of the electromagnet assembly 402, the door body can be opened at any angle. Specifically, when the user's hand touches the handle position of the door body, the electromagnet assembly is powered on to suspend the door body. When the door body is opened to a certain angle, the user's hand leaves the handle position of the door body, the electromagnet assembly is powered off, the door body falls under the action of gravity, and the plug-in convex strips 4021 enter the corresponding plug-in grooves 4012 below them, so that the door body 200 maintains the current door opening angle, and any door opening angle of the door body is achieved.

[0055] It is understandable that in the prior art, when the user's hand leaves the door body, the door body will rotate randomly under the action of inertia or external force, and may collide with a wall or a cabinet, etc. The box assembly provided in the embodiment of the present disclosure can keep the door body at the current door opening angle, preventing the door body 200 from rotating and hitting a wall or a cabinet, etc., after the user releases the door body 200, causing unnecessary damage.

[0056] A connecting hole 4011 is provided at the center of the permanent magnet 401 , that is, the permanent magnet 401 is annular.

[0057] Optionally, the span of the plug-in groove 4012 along the circumference of the permanent magnet 401 is in the range of 4° to 7°. For example, the span of the plug-in groove 4012 along the circumference of the permanent magnet 401 is 4°, 5°, 5.5°, 6° or 7°, etc. Correspondingly, the span of the plug-in convex strip 4021 along the circumference of the electromagnet assembly 402 is in the range of 4° to 7°. For example, the span of the plug-in convex strip 4021 along the circumference of the electromagnet assembly 402 is 4°, 5°, 5.5°, 6° or 7°, etc.

[0058] By limiting the span of the plug groove 4012 and the plug convex strip 4021 to the above range, the door opening angle of the door body can be refined under the premise of meeting the strength requirements, and any door opening angle of the door body can be achieved. According to experimental tests, if the span of the plug convex strip 4021 along the circumference of the electromagnet assembly 402 is too small, that is, the thickness of the plug convex strip 4021 is too small, then the plug convex strip 4021 cannot meet the strength requirements of the suspension landing process, and the plug convex strip 4021 is easily damaged during use. If the span of the plug convex strip 4021 along the circumference of the electromagnet assembly 402 is too large, it will affect the accuracy of any door opening angle, that is, the deviation between the door opening angle of the door body when the user's hand leaves the door body and the actual door opening angle of the door body is large.

[0059] Optionally, the height of the plug-in ridge 4021 is 0.5 mm.

[0060] In some embodiments, in combination Figure 4 and Figure 5As shown, a guide convex strip 4013 is spaced between two adjacent plug-in grooves 4012, and the guide convex strip 4013 includes an arc-shaped surface convex upward. Wherein, an accommodating groove 4022 is spaced between two adjacent plug-in convex strips 4021, and the accommodating groove 4022 is used to accommodate the guide convex strip 4013. The guide convex strip 4013 extends along the radial direction of the permanent magnet 401 and is evenly distributed along the circumference of the permanent magnet 401. The accommodating grooves 4022 extend along the radial direction of the permanent magnet 401 and are evenly distributed along the circumference of the electromagnet assembly 402.

[0061] By providing the guide convex strip 4013, it is convenient to smoothly insert the plug-in convex strip 4021 into the corresponding plug-in groove 4012. Specifically, when the door body is suspended, if the plug-in convex strip 4021 is projected on the permanent magnet 401 and falls within the range of the guide convex strip 4013, then during the falling process of the door body, the plug-in convex strip 4021 slides down along the arc surface of the guide convex strip 4013 to the plug-in groove 4012 on one side of the guide convex strip 4013, and multiple plug-in convex strips are arranged in a one-to-one correspondence in multiple plug-in grooves 4012 to achieve the engagement of the permanent magnet 401 and the electromagnet assembly 402, thereby fixing the door opening angle. By providing the accommodating groove 4022, it is convenient to accommodate the guide convex strip 4013, so as to achieve the engagement of the permanent magnet 401 and the electromagnet assembly 402.

[0062] In some embodiments, in combination Figure 6 As shown, radially outward along the upper surface of the permanent magnet 401, the upper surface of the permanent magnet 401 is tilted downward. Radially outward along the lower surface of the electromagnet assembly 402, the lower surface of the electromagnet assembly 402 is tilted downward, so that the plug-in convex strip 4021 slides into place along the plug-in groove 4012 under the action of gravity. In other words, radially outward along the upper surface of the permanent magnet 401, the guide convex strip 4013 and the plug-in groove 4012 both extend downwardly tilted. Radially outward along the lower surface of the electromagnet assembly 402, the plug-in convex strip 4021 and the accommodating groove 4022 both extend downwardly tilted. Such an arrangement can play a guiding role. In the process of the door body falling, the plug-in convex strip 4021 of the electromagnet assembly 402 better matches the plug-in groove 4012 of the permanent magnet 401, and realizes autonomous resetting.

[0063] The electromagnet assembly 402 can be powered on to generate a magnetic field, or powered off to lose the magnetic field.

[0064] In some embodiments, in combination Figure 6 As shown, the electromagnet assembly 402 includes an iron core 4023 and an electromagnet coil 4024. The iron core 4023 is configured with a hinge shaft groove with an opening facing downward, and the hinge shaft 302 is suitable for inserting into the hinge shaft groove. The iron core 4023 includes a first section and a second section located below the first section. The electromagnet coil 4024 is wound around the first section of the iron core 4023.

[0065] The electromagnet coil 4024 is energized to magnetize the iron core 4023, generating a magnetic field that repels the permanent magnet 401, and causing the door body 200 to suspend. The electromagnet coil 4024 is deenergized to demagnetize the iron core 4023, causing the door body 200 to fall. In this way, by controlling the on and off of the electromagnet coil 4024, the door body 200 is suspended during the process of opening and closing the door, reducing the friction between the door body 200 and the lower hinge 300, and realizing labor-saving opening and closing of the door; after the door body is opened to a certain angle, the user's hand leaves the handle position of the door body, the electromagnet assembly is deenergized, the door body falls under the action of gravity, and the plug-in convex strip 4021 is engaged with the plug-in groove 4012, so that the door body 200 maintains the current door opening angle, and any door opening angle is realized.

[0066] By providing a hinge axis groove that matches the hinge axis, the hinge axis is always located in the hinge axis groove during the suspension process of the door body, so the door body can be limited and centered to prevent the door body from being skewed or offset.

[0067] Optionally, the shape and size of the hinge axis slot are equal to the hinge axis. This arrangement can limit the door body and prevent the door body from tilting or deflecting.

[0068] In some embodiments, in combination Figure 6 As shown, the bottom plate of the door body 200 is configured with a mounting hole, and the periphery of the mounting hole extends upward to form a support frame 201. The connection between the second section and the first section of the iron core 4023 extends outward to form a fixing plate 4025, and the fixing plate 4025 is mounted on the upper wall of the support frame 201. By providing the support frame 201, it is convenient to fix the electromagnet assembly 402 to the door body 200.

[0069] Optionally, the fixing plate 4025 is provided with a plurality of first threaded holes, and the door body 200 is provided with a plurality of second threaded holes. Bolts are passed through the first threaded holes and the corresponding second threaded holes in sequence to fix the fixing plate 4025 to the door body 200, thereby achieving a fixed connection between the electromagnet assembly 402 and the door body 200.

[0070] In some embodiments, in combination Figure 4 and Figure 6 As shown, the second section of the iron core 4023 is located in the internal space of the support frame 201. The permanent magnet 401 includes a first step portion 4014 and a second step portion 4015 disposed on the upper side of the first step portion 4014. The outer diameter of the second step portion 4015 is smaller than the outer diameter of the first step portion 4014, and the outer diameter of the second step portion 4015 matches the inner diameter of the mounting hole. During the suspension process of the door body 200, at least part of the second step portion 4015 is located in the mounting hole.

[0071] When the door is suspended, the iron core 4023 is suspended upward and separated from the second step portion 4015; when the door falls, the iron core 4023 falls downward and matches the second step portion 4015. With the solution provided by this embodiment, during the process of the door being suspended and falling, the second step portion 4015 is always located in the mounting hole, and the second section of the iron core 4023 is located in the support frame 201, so that the fixing plate 4025, the support frame 201 and the permanent magnet 401 are enclosed, making the internal space of the support frame 201 relatively closed. In this way, foreign matter can be prevented from getting stuck between the iron core 4023 and the second step portion 4015, thereby improving the reliability of the door assembly.

[0072] In addition, during the suspension process of the door body 200, at least part of the second step portion 4015 is located in the mounting hole, and the user cannot see the separation of the electromagnet assembly 402 and the permanent magnet 401, which can ensure the uniformity of the appearance and prevent hands or other foreign objects from reaching into the gap between the electromagnet assembly 402 and the permanent magnet during the suspension of the door body, which is beneficial to improving safety and preventing the door body from getting stuck.

[0073] In some embodiments, a macro probe 403 is provided on the upper end surface of the hinge shaft 302, and the macro probe 403 is used to measure the suspension height of the door body 200. The refrigerator door body is usually provided with a plurality of hangers for storing items, so the weight of the refrigerator door body may change, and the voltage intensity required for the door body suspension changes with the change of the door body weight. By providing the macro probe 403, it is convenient to measure the suspension height of the door body 200, so that the voltage intensity of the electromagnet assembly 402 is maintained within a suitable range.

[0074] Optionally, the floating height of the door body 200 is in the range of 0.7 mm to 1.3 mm. For example, the floating height of the door body is 0.7 mm, 1 mm, 1.1 mm, 1.2 mm or 1.3 mm.

[0075] In some embodiments, in combination Figure 6 As shown, the suspension mechanism 400 further includes a connecting gear 404, which is embedded in the lower surface of the permanent magnet 401. A relief hole corresponding to the connecting hole 4011 is provided at the center of the connecting gear 404, and the relief hole is used for interference connection with the hinge shaft 302. Since the permanent magnet 401 and the hinge shaft 302 are made of different materials, the permanent magnet 401 is conveniently fixedly connected to the lower hinge 300 by providing the connecting gear 404, which is relatively cheap and reliable.

[0076] Optionally, combined Figure 8 As shown, the suspension mechanism 400 also includes a wire 405, a first end of which is electrically connected to the electromagnet assembly 402, and a second end of the wire extends upward through the door body 200 and is connected to a control board above the box body to achieve communication and power supply.

[0077] Optionally, combined Figure 7 , Fig. 9 and Fig.10 As shown, a handle area 202 is provided at the bottom of the door body 200, and the user usually grabs the handle area 202 to pull the door body. The handle area 202 is provided with an infrared human sensing probe 203, and the infrared human sensing probe 203 is connected to the wire 405 through the connecting line 204 to achieve communication and power supply with the control board above the box.

[0078] In a second aspect, an embodiment of the present disclosure provides a refrigerator.

[0079] The refrigerator provided by the embodiment of the present disclosure includes a cabinet assembly of any of the above embodiments.

[0080] Since the above-mentioned cabinet assembly is included, the door body 200 of the refrigerator can be suspended during the process of opening and closing the door, which is beneficial to reduce the friction between the door body 200 and the lower hinge 300, realizes labor-saving opening and closing of the door, and improves the user experience.

[0081] In a third aspect, an embodiment of the present disclosure provides a control method for the above-mentioned box assembly.

[0082] The control method provided by the embodiment of the present disclosure includes: when a human hand is detected in the handle area, controlling the electromagnet assembly to be energized so that the door body is suspended; when no human hand is detected in the handle area, controlling the electromagnet assembly to be deenergized.

[0083] When a human hand is detected in the handle area, the door is in the process of opening and closing. By controlling the power of the electromagnet assembly to suspend the door, it is possible to save effort in opening and closing the door. When no human hand is detected in the handle area, the electromagnet assembly is powered off, the door falls, and the plug-in convex strip enters the plug-in groove to maintain the current door opening angle, so that the door can be opened at any angle.

[0084] Optionally, controlling the electromagnet assembly to be energized includes: obtaining an initial weight of the door body and an initial voltage corresponding to the initial weight; controlling the electromagnet assembly to be energized with the initial voltage; and adjusting the current voltage of the door body according to the suspension height of the door body. The initial weight of the door body refers to the weight of the door body after all detachable structures such as the hanger are removed, and the initial voltage of the door body can make the door body with the initial weight suspend at a preset suspension height.

[0085] Since the door of the refrigerator is usually provided with a plurality of detachable hangers, which can hold items such as eggs and condiments, the weight of the door of the refrigerator varies according to the user's usage. Since the weight of the door may vary, it is necessary to judge the magnitude of the voltage according to the suspension height of the door, thereby adjusting the voltage applied to the electromagnet assembly 402 to keep the door at an appropriate suspension height, and cooperate with the structures such as the plug-in convex strip 4021 and the plug-in groove 4012 to realize the function of the door.

[0086] Optionally, the current voltage of the door body is adjusted according to the suspension height of the door body, including: measuring the suspension height of the door body, and when the suspension height of the door body is less than the preset suspension height, increasing the current voltage by a preset voltage increment; when the suspension height is greater than or equal to the preset suspension height, maintaining the current voltage. This step is executed cyclically until the suspension height is greater than or equal to the preset suspension height, so that the voltage can be judged according to the suspension height of the door body, and the voltage applied to the electromagnet assembly 402 can be adjusted to keep the door body at a suitable suspension height. For example, the preset voltage increment is 6V. When the suspension height of the door body is less than the preset suspension height, the current voltage is increased by 6V. If the suspension height of the door body has not reached the preset suspension height, the current voltage continues to be increased by 6V until the suspension height of the door body is equal to the preset suspension height.

[0087] The normal sensing time of a human hand is between 150 milliseconds and 200 milliseconds. Fig.11 As shown, the door adjustment time of the embodiments of the present disclosure is less than 60 milliseconds, and the time difference perceived by the human body is used to achieve zero waiting when opening and closing the door, making the door opening and closing more comfortable.

[0088] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A box assembly, comprising a box and a door arranged on the box, characterized in that: The box assembly also includes: The lower hinge comprises a lower hinge plate arranged on the box body and a hinge shaft arranged on the lower hinge plate; The suspension mechanism includes a permanent magnet and an electromagnet assembly; the permanent magnet is sleeved on the hinge shaft and is located on the upper side of the lower hinge plate; the electromagnet assembly is arranged on the door body, and the electromagnet assembly is sleeved on the hinge shaft and is located on the upper side of the permanent magnet; In the process of opening and closing the door, the electromagnet assembly can be energized and generate a magnetic field that repels the permanent magnet. The electromagnet assembly and the permanent magnet repel each other to provide an upward magnetic force for the door body, causing the door body to float.

2. The box assembly according to claim 1, characterized in that: A connection hole is provided at the center of the permanent magnet, and the hinge shaft passes through the connection hole; the upper surface of the permanent magnet includes a plurality of plug-in grooves, the plug-in grooves extend along the axial direction of the permanent magnet, and the plurality of plug-in grooves are evenly distributed along the circumference of the permanent magnet; the lower surface of the electromagnet assembly includes a plurality of plug-in convex strips corresponding to the plug-in grooves; Wherein, when the electromagnet assembly is powered off, the electromagnet assembly falls along with the door body, and the plug-in convex strip is adapted to enter the plug-in groove so that the door body maintains the current door opening angle.

3. The box assembly according to claim 2, characterized in that: A guide convex strip is provided between two adjacent plug-in grooves, and the guide convex strip comprises an arc-shaped surface convex upwards; wherein, an accommodating groove is provided between two adjacent plug-in grooves, and the accommodating groove is used to accommodate the guide convex strip.

4. The box assembly according to claim 2, characterized in that: The upper surface of the permanent magnet is tilted downward radially outward; the lower surface of the electromagnet assembly is tilted downward radially outward, so that the plug-in protrusion slides into place along the plug-in groove under the action of gravity.

5. The box assembly according to any one of claims 1 to 4, characterized in that: The solenoid assembly includes: An iron core having a hinge shaft groove with an opening facing downward, wherein the hinge shaft is suitable for being inserted into the hinge shaft groove; the iron core comprises a first section and a second section located below the first section; and, The electromagnet coil is wound around the first section of the iron core.

6. The box assembly according to claim 5, characterized in that: The bottom plate of the door body is configured with a mounting hole, the periphery of the mounting hole extends upward to form a support frame; the connection between the second section and the first section extends outward to form a fixing plate, and the fixing plate is mounted on the upper wall surface of the support frame.

7. The box assembly according to claim 6, characterized in that: The second section of the core is located in the inner space of the support frame; The permanent magnet includes a first step portion and a second step portion arranged on the upper side of the first step portion, the outer diameter of the second step portion is smaller than the outer diameter of the first step portion, and the outer diameter of the second step portion matches the inner diameter of the mounting hole; during the suspension process of the door body, at least part of the second step portion is located in the mounting hole.

8. The box assembly according to claim 1, characterized in that: A macro probe is arranged on the upper end surface of the hinge shaft, and the macro probe is used to measure the suspension height of the door body.

9. The box assembly according to claim 1, characterized in that: The suspension mechanism also includes: The connecting gear is embedded in the lower surface of the permanent magnet. A relief hole corresponding to the connecting hole is arranged at the center of the connecting gear. The relief hole is used for interference connection with the hinge shaft.

10. A refrigerator, characterized in that: Comprising a box assembly as described in any one of claims 1 to 9.

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