Packing mat for household appliance and household appliance

Abstract

A packing mat for a household appliance and a household appliance are provided. The packing mat supports at least one surface of the household appliance for packing. The packing mat includes a body made of a paper material. The body includes: a buffer support region, corresponding to a support portion of the household appliance. A non-zero gap is defined between the buffer support region and the support portion to absorb potential energy generated by downward movement of the support portion. The improved packing solution provided in the solution of the present disclosure has at least one advantage of environmental protection, high efficiency, and reliability.

Description

TECHNICAL FIELD

[0001] Embodiments of the present invention relate to the field of household appliance technologies, and in particular, to a packing mat for a household appliance and a household appliance.BACKGROUND

[0002] Household appliances are generally subjected to additional external package protection to prevent damage caused by impacts to outer surfaces of the household appliances during handling. It is common practice in the industry to place a household appliance on a bottom mat for packing to provide buffer protection when the household appliance accidentally falls.

[0003] Currently, for most bottom mat products on the market, hollow boards made of polypropylene (PP for short) are attached to foam bottom mats, or directly attached to bottom mats of expanded polystyrene (EPS for short) boards through an adhesive tape, which are used for bearing and transporting household appliances. In addition, to address inadequate protection during transportation, a density or a thickness of foam is often increased in a local region of the bottom mat (for example, a main load-bearing region on the bottom mat when the household appliance falls), or even elastic materials such as expanded polypropylene (EPP for short) are additionally provided to enhance bearing performance of the region. In this way, costs of components are increased, and the assembly process on the production line is complicated and manufacturing efficiency is low. On the other hand, foam particles may fall during transportation, and EPS foam bottom mats are difficult to recycle, which is to take hundreds of years to decompose, causing environmental pollution problems.SUMMARY

[0004] An objective of embodiments of the present invention is to provide an improved packing solution for household appliances.

[0005] Embodiments of the present invention provide a packing mat for a household appliance, which supports at least one surface of the household appliance for packing. The packing mat includes a body made of a paper material. The body includes: a buffer support region, corresponding to a support portion of the household appliance. A non-zero gap is defined between the buffer support region and the support portion to absorb potential energy generated by downward movement of the support portion.

[0006] The support portion includes a support plate of a compressor compartment. The support plate is configured to support a compressor.

[0007] Compared with an existing packing solution using EPS, in this implementation, the packing mat is made of paper, which facilitates environmental protection while effectively protecting the household appliance. The packing mat is provided with the buffer support region. The buffer support region does not play an actual supporting role when the household appliance in a packed state is normally placed. For example, during a falling test, the support portion of the household appliance moves downward due to falling, and a gap between the buffer support region and the support portion gradually decreases until in contact with each other. In this case, potential energy generated through falling of the support portion is absorbed by the buffer support region, thereby implementing reliable protection for the household appliance (especially the support portion) during the falling test. Further, the buffer support region is a part of the body. The entire body is made of a paper material, which is green and environmentally friendly.

[0008] Further, the support portion of the household appliance is configured to support most of the weight of the household appliance, and therefore requires special protection when the household appliance falls. In the packing mat provided in this implementation, the buffer support region is specially arranged for the support portion, which plays a buffer role when the household appliance falls, to avoid causing an adverse effect due to excessive rigidity of the body, and provide flexible support for the support portion. Therefore, the body has both better bearing performance and buffer performance, which can provide a better protection effect for the household appliance.

[0009] Optionally, the buffer support region includes: a peripheral region, and a middle platform region recessed from the peripheral region and at least partially surrounded by the peripheral region. If a support region is formed by a large plane, the support region has strong rigidity, which is not beneficial to absorb the potential energy during the falling of the household appliance. By contrast, the buffer support region of this implementation is designed to be concave in the middle and convex on the periphery to achieve stepped buffering. Specifically, when the household appliance falls, the support portion first presses the peripheral region downward. The peripheral region absorbs energy during the falling of the household appliance. The middle platform region in the middle is recessed to provide a certain support after a support surface of the peripheral region is compressed during the falling, so as to prevent the support portion from continuing to deform downward, thereby effectively protecting the support portion.

[0010] Optionally, a spacing between the peripheral region and the support portion is in a range of [6, 8] millimeters, that is in a range of six to eight millimeters. Therefore, the peripheral region can support the support portion in the first time when the household appliance falls, to avoid generating excessive potential energy due to an excessively long free-fall distance of the support portion.

[0011] Optionally, a spacing between the middle platform region and the support portion is in a range of [12, 20] millimeters, that is in a range of twelve to twenty millimeters. Therefore, the middle platform region is recessed by a sufficient distance to provide a sufficient buffer space.

[0012] Optionally, the peripheral region includes one or more first buffer ribs. The plurality of first buffer ribs are arranged at intervals along a depth direction of the household appliance. Each of the first buffer ribs extends along a width direction of the household appliance. Generally, a size of the support portion in the width direction of the household appliance is greater than the size of the support portion in the depth direction of the household appliance. Correspondingly, the first buffer rib extending along the width direction can evenly support the entire support portion in the width direction during a falling test, to prevent a phenomenon such as skewing when the household appliance falls. Optionally, the middle platform region includes a plurality of second buffer ribs arranged in a staggered manner. Therefore, the strength and / or rigidity of the middle platform region is improved to ensure that the support portion that continues to fall after the peripheral region is subjected to compression deformation can be reliably supported by the middle platform region.

[0013] Optionally, the plurality of first buffer ribs are independent of each other. Therefore, a buffer protection effect is prevented from being affected due to excessively strong rigidity of the buffer support region.

[0014] Optionally, the first buffer rib and the second buffer rib are connected to each other. Therefore, it is ensured that the buffer support region has a degree of rigidity and strength, to flexibly support a falling support portion.

[0015] The buffer support region further includes a plurality of reinforcing ribs that are dispersed in the peripheral region and / or the middle platform region. The reinforcing ribs are lower than the peripheral region and the middle platform region, and rigidity and / or strength of the reinforcing ribs is greater than rigidity and / or strength of the peripheral region and the middle platform region. Therefore, the reinforcing rib is arranged in the buffer support region to play a reinforcing role and enhance structural strength of the first buffer rib and / or the second buffer rib. The reinforcing rib does not play a supporting role, and therefore is designed to be lower in height than the first buffer rib and the second buffer rib.

[0016] Optionally, the body has a first surface facing the household appliance and a second surface opposite to the first surface. Each of the reinforcing ribs is a solid structure extending from the second surface to the first surface. Therefore, the solid ribs are used to enhance the strength and / or rigidity of the buffer support region, and cooperate with the concave-shaped buffer support region to reliably achieve stepped buffering for the support portion.

[0017] Optionally, the peripheral region and the middle platform region each include a plurality of buffer ribs. The buffer ribs are formed by the first surface protruding along a first direction and recessed on a corresponding second surface along the first direction to form a groove, and / or the buffer ribs are formed by the second surface protruding along an opposite direction of the first direction and is recessed on the corresponding first surface along the opposite direction of the first direction to form a groove, and the first direction is parallel to a direction of the first surface pointing to the second surface. Therefore, any one of the first buffer rib and the second buffer rib is a hollow rib, to reduce the rigidity of the buffer rib to a certain extent, thereby ensuring that the buffer rib can better play a buffering and protective role. Further, the body facilitates overall processing, reduces material usage, and is low-carbon, which contributes to saving resources and energy.

[0018] Optionally, the body further includes: a main support region, correspondingly supporting another portion of the household appliance. The main support region is higher than the buffer support region. When the household appliance in a packed state is normally placed, the main support region supports a bottom of the entire household appliance, and the buffer support region lower than the main support region mainly plays an elastic buffering role when the household appliance in a packed state falls.

[0019] Optionally, the main support region includes a first support region for correspondingly supporting a first portion of the household appliance. The first support region is located on two sides of the buffer support region along the width direction of the household appliance. The first portion may be configured to support the support portion. Correspondingly, the first support regions are arranged on two sides of the buffer support region to correspondingly support the first portion, thereby providing protection when the household appliance is normally placed.

[0020] Further, rigidity and / or strength of the first support region is greater than rigidity and / or strength of a remaining region of the body. The body of the packing mat is enhanced in terms of rigidity and / or strength in a local region (for example, a region corresponding to the first portion of the household appliance), so as to achieve a better drop protection effect in the local region without additionally arranging elastic buffers. Specifically, the first support region has stronger load-bearing performance and is not easily broken during falling of the household appliance, thereby effectively improving the protective performance for the household appliance. Further, the first support region is a part of the body. The entire body is made of a paper material, which is green and environmentally friendly.

[0021] Optionally, the main support region includes a second support region for correspondingly supporting a second portion of the household appliance. The second support region is located in front of the buffer support region along a depth direction of the household appliance. Therefore, when the household appliance in a packed state is normally placed, the second support region has a supporting and protective role for the second portion. When the household appliance falls, a support portion with a larger weight is to fall by a larger amount than the second portion, so that the household appliance has a tendency to tilt backward. In this implementation, the buffer support region is arranged to achieve flexible buffer support for the support portion, which not only can prevent an overturning risk as a result of the household appliance tilting backward, but also can protect the bottom of the household appliance from being damaged due to falling.

[0022] Further, the first support region and the second support region jointly surround the buffer support region in the middle. When the household appliance is normally placed, the first support region and the second support region play a major supporting and protective role and suspend the support portion above the buffer support region. When the household appliance falls, the buffer support region provides targeted buffering support and protection for the support portion. In this way, the bottom of the household appliance is protected in all directions.

[0023] Optionally, the body includes: a protrusion structure, located between the second support region and the buffer support region. The protrusion structure includes a top surface higher than the second support region and an inclined surface obliquely extending from the top surface toward the second support region. The inclined surface corresponds to a rear surface of the second portion. Therefore, the inclined surface can serve as a buffer to support the rear surface of the second portion when the household appliance falls. This can also disperse the impact force of the support portion on the buffer support region to a certain extent, to further enhance the bearing performance of the body (for example, the buffer support region).

[0024] Optionally, at least one side of the protrusion structure is provided with a plurality of reinforcing ribs arranged at intervals. In this way, the structural strength of the protrusion structure inserted between the support portion and the second portion is enhanced.

[0025] Optionally, the household appliance is a refrigerator, including a compressor compartment for accommodating a compressor. The compressor compartment includes a bottom plate defining a front surface of the compressor compartment and a support plate supporting the compressor. The support plate forms the support portion, and the bottom plate forms the second portion. In this way, the second support region supports the bottom plate. A concave portion formed in the middle platform region provides a deformation space. When the household appliance falls, part of downward potential energy of the support plate is absorbed by the peripheral region. The remaining part is transferred to a bottom of the body (for example, transferred to a base of the bearing body) and then reacts on the middle platform region, to ensure that the middle platform region can reliably support the support plate.

[0026] Optionally, a plurality of reinforcing ribs are further dispersed in the second support region. The reinforcing ribs are lower than the second support region, Rigidity and / or strength of the reinforcing ribs is greater than rigidity and / or strength of the second support region. Therefore, the reinforcing rib is arranged in the second support region to play a reinforcing role and enhance structural strength of the second support region. The reinforcing rib does not play a supporting role, and therefore is designed to be lower in height than support ribs of the second support rib.

[0027] Optionally, the body is manufactured through a pulp molding process. Pulp molding is a three-dimensional paper-making technology, in which waste paper is usually used as raw material and a body is formed into the required shape through a plurality of processes. The entire manufacturing process is harmless to the environment, and the body can be recycled and reused, which is green and environmentally friendly.

[0028] Therefore, an embodiment of the present invention further provides a household appliance in a packed state, including: a main body defining a chamber; and a door, configured to close the chamber. The household appliance further includes the foregoing packing mat. The buffer support region correspondingly supports a support portion of the household appliance. In this way, the packing mat can support the household appliance more reliably. When the household appliance falls, more reliable protection is provided for the support portion through the buffer support region.BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 is a schematic diagram of a household appliance according to an embodiment of the present invention. FIG. 2 is an exploded view of the structure shown in FIG. 1. FIG. 3 is an exploded view of the packing mat in FIG. 2. FIG. 4 is a top view of the body in FIG. 3. FIG. 5 is a partial schematic diagram of the structure shown in FIG. 1 from another perspective. FIG. 6 is a schematic diagram of cooperation between a first support region and a first portion. FIG. 7 is a cross-sectional view of FIG. 6 along a direction A-A. FIG. 8 is a schematic diagram of a packing mat from another perspective. FIG. 9 is a partial enlarged view of a region B in FIG. 8. FIG. 10 is a cross-sectional view of FIG. 5 along a direction C-C. FIG. 11 is a cross-sectional view of FIG. 5 along a direction D-D. FIG. 12 is a schematic cross-sectional view of FIG. 5 along a direction E-E. FIG. 13 is a cross-sectional view of FIG. 5 along a direction F-F. FIG. 14 is a schematic diagram of assembly of a body and a protective member in FIG. 3.

[0030] In the accompanying drawings: 1-Household appliance; 10-Main body; 10a-Top surface; 10b-Side surface; 10c-Rear surface; 10d-Bottom surface of the main body; 101-Chamber 102-Side plate; 11-Door; 110-Front panel; 111-Thermal insulation space; 112-Rear wall; 113-Frame; 12-First portion; 13-Compressor compartment; 131-Side bracket; 131a-Bottom surface of the side bracket; 132-Support plate; 133-Bottom plate; 134-Compressor; 135-Rear roller; 14-Support portion; 15-Second portion; 15a-Rear surface of the second portion; 16-Bottom beam; 161-Front roller; 2-Packing mat; 20-Body; 20a-First surface; 20b-Second surface; 201-First flange; 202-Second flange; 203-Protrusion structure; 203a-Top surface; 203b-Inclined surface; 204-Guide platform; 21-First support region; 211-First support rib; 212-First longitudinal rib; 213-First transverse rib; 2131-First section; 2132-Second section; 22-Second support rib; 221-Groove; 23-Base; 231-Bottom wall; 232-Side wall; 232a-Upper surface; 232b-Outer surface; 233-Accommodating space; 24-Buffer support region; 241-Peripheral region; 2411-First buffer rib; 242-Middle platform region; 2421-Second buffer rib; 25-Main support region; 251-Second support region; 252-Bottom hinge support region; 253-Side plate support region; 254: Door body support region; 255-Bottom beam support region; 2551-Avoidance region; 26-Sunk region; 27-Reinforcing rib; 3-Protective member; 4-Packing box; 5-Top mat; 6-Edge mat; gap1-Gap between a first transverse rib and an adjacent structure; L1-Spacing between a peripheral region and a support portion; L2-Spacing between a middle platform region and a support portion; β-Axis of symmetry; x-Width direction of a household appliance; y-Depth direction of the household appliance; z-Height direction of the household appliance.DETAILED DESCRIPTION

[0031] To make the foregoing objectives, characteristics, and advantages of the present invention clearer and easier to understand, specific embodiments of the present invention are described in detail below with reference to accompanying drawings.

[0032] FIG. 1 is a schematic diagram of a household appliance 1 according to an embodiment of the present invention. FIG. 2 is an exploded view of the structure shown in FIG. 1.

[0033] The household appliance 1 may be a refrigeration appliance, a washing machine, a dish washing machine, an oven, or the like. The refrigeration appliance may be a refrigerator, a refrigerated cabinet, a wine cabinet, or the like. FIG. 1 shows an exemplary embodiment using a refrigerator as an example. This implementation may be applied to various types of refrigerators, such as single-door refrigerators, cross-door refrigerators, French door refrigerators, side-by-side refrigerators which all have two left and right doors, and three-door refrigerators.

[0034] For ease of expression, in this implementation, a width direction of the household appliance 1 is denoted as an x-direction, a depth direction is denoted as a y-direction, and a height direction is denoted as a z-direction. In this implementation, a front-rear direction refers to the y-direction and an opposite direction thereof, where a front or a front side refers to a direction facing a user during use of the household appliance 1, and a rear or a rear side refers to a direction facing away from the user during use of the household appliance 1. In this implementation, an up-down direction refers to a z-direction and an opposite direction thereof, where an upper part or an upper side or a top portion refers to a direction that is closer to the upper part along the direction of gravity when the household appliance 1 is in use, and a lower side or a bottom side or a bottom refers to a direction that contacts or is closest to the ground when the household appliance 1 is in use.

[0035] The household appliance 1 in this embodiment is in a packed state. Specifically, during transportation of the household appliance 1, a protective shell is usually wrapped on an outer periphery of the household appliance 1 to provide anti-collision and buffer functions. Some accessories configured for the household appliance 1 may also be removed from mounting positions thereof and placed in a dedicated box to facilitate transportation. The household appliance 1 in the packed state cannot be directly used. After being transported to a suitable position (for example, a house of a user), the protective shell is disassembled, the accessories are taken out from the box and mounted to corresponding mounting positions, and then the household appliance 1 may enter a usage state for the user to use.

[0036] Referring to FIG. 1 and FIG. 2, the protective shell may include a top mat 5 covering a top portion of the household appliance 1 to prevent external impact from damaging a top structure. Further, the protective shell may include a packing mat 2. The household appliance 1 in a packed state is entirely supported on the packing mat 2. The packing mat 2 may have an isolating and buffering role to prevent the bottom of the household appliance 1 from directly colliding with the ground and causing damage when the household appliance 1 falls unexpectedly. Further, the protective shell may further include a plurality of (for example, four) edge cushions 6, which respectively cover lateral edges of the household appliance 1. Further, the protective shell may further include a packing box 4. The packing box 4 may wrap the entirety of the household appliance 1 covered with the top mat 5, the packing mat 2, and the edge cushions 6. The packing box 4 is omitted in FIG. 2.

[0037] Further, still referring to FIG. 1, the household appliance 1 may include a main body 10 (as shown in FIG. 10) defining a chamber 101, and a door 11. The door 11 is movably connected to a front of the main body 10 to open or close at least part of the chamber 101. A refrigerator is used as an example. The chamber 101 may be a freezing chamber, a refrigerating chamber, a temperature-changing chamber, or the like. FIG. 10 exemplarily shows one of the chambers 101, such as a refrigerating chamber.

[0038] Further, referring to FIG. 1, FIG. 2, and FIG. 10, the main body 10 may include a top surface 10a and a bottom surface 10d opposite to each other along the z-direction, a pair of side surfaces 10b opposite to each other along the x-direction, and a rear surface 10c on a rear side along the y-direction. A thermal insulation space formed by a thermal insulation material is filled between a forwardly open space jointly defined by the top surface 10a, the bottom surface 10d, the pair of side surfaces 10b, and the rear surface 10c and the at least one chamber 101 arranged therein. A thermal insulation layer formed by the thermal insulation space has the effect of isolating heat to ensure that the chamber 101 has a better refrigeration / freezing effect. The main body 10 may include a pair of side plates 102 oppositely arranged along the x-direction, to form a side surface 10b.

[0039] Further, the door 11 may also include a thermal insulation space 111 filled with the thermal insulation material. When the door 11 closes the chamber 101, the thermal insulation layer formed by the thermal insulation space 111 plays a role of thermal insulation to ensure that the chamber 101 has a desirable refrigerating / freezing effect. The door 11 may include a front panel 110, a rear wall 112 facing the main body 10 when the door 11 is closed, and a frame 113 arranged along four sides of the door 11. The thermal insulation space 111 is located between the front panel 110 and the rear wall 112. In some embodiments, the front panel 110 forms at least part of a front boundary of the thermal insulation space 111, so that the thermal insulation material contacts a rear side of the front panel 110. In some other embodiments, the rear side of the front panel 110 may further be provided with another door panel. The front panel 110 may be a glass plate or a ceramic plate.

[0040] Further, the packing mat 2 may support at least one surface (for example, the bottom surface 10d) of the household appliance 1 for packing, so as to provide buffer for external impact on the household appliance 1.

[0041] Further, referring to FIG. 2 to FIG. 4, the packing mat 2 may use a body 20 made of a paper material, thereby facilitating environment protection while reliably protecting the household appliance. The body 20 has a first surface 20a and a second surface 20b that are opposite to each other (as shown in FIG. 14). The first surface 20a faces the household appliance 1 (for example, facing a bottom surface 10d of the main body 10). The first surface 20a may include a plurality of regions. Different regions correspondingly support different parts of the household appliance 1, and specifically correspondingly support (or face) different regions of the bottom surface 10d. In FIG. 4, different regions of the body 20 are distinguished through color blocks of different colors, to more clearly show a correspondence between each region of the body 20 and each part of the household appliance 1 that is correspondingly supported.

[0042] Further, the body 20 may include a first support region 21 which correspondingly supports a first portion 12 of the household appliance 1. Gravity borne by the first portion 12 per unit area is greater than gravity borne by a remaining portion of the at least one surface of the household appliance 1 per unit area. For example, at least one surface of the household appliance 1 supported by the packing mat 2 preferably includes a bottom surface 10d. The first portion 12 is adapted to form a partial region of the bottom surface 10d, and the gravity borne by the first portion 12 per unit area is greater than the gravity borne by another portion of the bottom surface 10d per unit area.

[0043] Further, rigidity and / or strength of the first support region 21 is greater than rigidity and / or strength of the remaining region of the body 20, where the remaining region of the body 20 corresponds to the another portion of the bottom surface 10d. In other words, the body 20 of the packing mat 2 is enhanced in terms of rigidity and / or strength in a local region (for example, a region corresponding to the first portion 12 of the household appliance 1), so as to achieve a better drop protection effect in the local region without additionally arranging elastic buffers. Specifically, the first support region 21 has stronger load-bearing performance and is not easily broken during falling of the household appliance 1, thereby effectively improving the protective performance for the household appliance 1. Further, the first support region 21 is a part of the body 20. The entire body 20 is made of a paper material, which is green and environmentally friendly.

[0044] A refrigerator is used as an example. Referring to FIG. 5 (in FIG. 5, a portion of a rear surface 10c is omitted to show an inner structure of a compressor compartment 13). The household appliance 1 may include the compressor compartment 13 for accommodating a compressor 134. The compressor compartment 13 may include two side brackets 131 oppositely arranged along an x-direction and a support plate 132 connected to each of the side brackets 131. The support plate 132 is configured to support the compressor 134. Further, the compressor compartment 13 may further include a bottom plate 133 defining a front surface of the compressor compartment 13.

[0045] In this example, the two side brackets 131 are both adapted to form the first portion 12. Correspondingly, the body 20 may include two first support regions 21 that are symmetrically (for example, symmetrically with respect to an axis β of symmetry) located on two sides of the body 20 along the x-direction. Each of the first support regions 21 corresponds to one of the side brackets 131. In this example, the two side brackets 131 are symmetrically located in a region where a pair of side surfaces 10b are close to a rear surface 10c. Correspondingly, the two first support regions 21 are respectively located on left and right upper corners of the body 20 from the perspective of FIG. 4.

[0046] Generally, most of the weight of the refrigerator is concentrated in the compressor compartment 13 located at a rear side of the refrigerator. For example, a net weight of the refrigerator is 130 kilograms (kg), a weight of the rear half of the refrigerator accounts for about 60% to 70% of the total weight, and the weight of the rear half is finally supported through the side brackets 131 and the support plate 132.

[0047] Specifically, the support plate 132 supporting the weight of the compressor compartment 13 is connected to and supported by a pair of side brackets 131. A contact area between the side brackets 131 and the body 20 is relatively small (referring to FIG. 6 and FIG. 10, the support of the side brackets 131 on the body 20 is mainly achieved through elongated bottom surfaces 131a), resulting in high gravity per unit area. During the refrigerator drop test, the region of the body 20 corresponding to the side brackets 131 is subjected to greater impact than a region corresponding to another portion on the bottom of the refrigerator. Therefore, in this implementation, the first support region 21 of the body 20 corresponding to the side brackets 131 is designed to have higher rigidity and / or strength, to ensure that the first support region 21 can more reliably supports the side brackets 131 during a drop test. The support plate 132 is omitted in FIG. 10.

[0048] In some embodiments, a structure of the body 20 is symmetrically arranged substantially with respect to the axis β of symmetry.

[0049] In a specific implementation, referring to FIG. 4 and FIG. 8, the first support region 21 may include a plurality of first support ribs 211. A remaining region of the body 20 may include a plurality of second support ribs 22. A distribution density of the plurality of first support ribs 211 in the first support region 21 may be greater than a distribution density of the plurality of second support ribs 22 in the remaining region. For example, the plurality of first support ribs 21 and the plurality of second support ribs 22 may both be arranged in a crisscross pattern. A difference lies in that a spacing between the first support ribs extending in the same direction is significantly less than a spacing between the second support ribs extending in the same direction.

[0050] A second support region 251 is used as an example. The second support region 251 may correspondingly support a second portion 15 of a household appliance 1. The second portion 15 may be, for example, a bottom plate 133 of a compressor compartment 13. Referring to FIG. 10, the bottom plate 133 may extend downward and forward from a rear surface 10c to form a front surface of the compressor compartment 13, and continue to extend forward along a y-direction to form a portion of the bottom surface 10d of a main body 10. The second support region 251 correspondingly supports a portion supporting the bottom plate 133 that forms the bottom surface 10d of the main body 10. Still referring to FIG. 4 and FIG. 8, it may be visually obtained that, in the plurality of first support ribs 211 arranged in the first support region 21, widths (dimensions in a direction perpendicular to an extension direction and a z-direction) of a single first support rib 211 are all less than a width of a single second support rib 22 arranged in the second support region 251. Similarly, a spacing between adjacent first support ribs 211 is also less than a spacing between adjacent second support ribs 22.

[0051] A denser arrangement of support ribs can improve the rigidity and / or strength of the first support region 21, so that the first support region 21 is less prone to compression deformation than a remaining region (for example, the second support region 251), thereby more reliably protecting the first portion 12 of the household appliance 1. During falling of the household appliance 1, the first support region 21 reliably supports the falling first portion 12 through the first support ribs 211 arranged with high density, thereby preventing the first portion 12 from colliding with the ground and causing damage.

[0052] In a specific implementation, the first support region 21 and the remaining region of the body 20 may be integrally formed through a paper material. Therefore, a quantity of components included in the packing mat 2 is reduced, so that a packing process is simplified during packing of the household appliance 1 on a production line, thereby improving manufacturing efficiency. Further, the one-piece molding method eliminates the need for additional fixing materials (for example, adhesive tape), which is green and environmentally friendly.

[0053] In a specific implementation, the body 20 may be manufactured through a pulp molding process. Pulp molding is a three-dimensional paper-making technology, in which waste paper is usually used as raw material and a body is formed into the required shape through a plurality of processes. The entire manufacturing process is harmless to the environment, and the body 20 can be recycled and reused, which is green and environmentally friendly. Further, when a mold of the body 20 is designed, the mold is designed with differentiated support rib density corresponding to the first support region 21 and support rib density corresponding to the remaining region, so that the body 20 with enhanced strength and / or rigidity in the local region can be manufactured in one piece.

[0054] In a specific implementation, referring to FIG. 4 to FIG. 11 (FIG. 7 shows an exploded view of the first portion 12 and the first support region 21), for each first support rib 211 among the plurality of first support ribs 211, the first support rib 211 may be a solid structure extending from a second surface 20b to a first surface 20a. Specifically, the first support rib 211 may be a protrusion extending from the second surface 20b toward the first surface 20a. A top portion of the protrusion is adapted to form a support surface supporting the first portion 12 (for example, a bottom surface 131a of the side bracket 131).

[0055] It should be noted that in actual applications, considering process limitations, a small gap is allowed to exist on the second surface 20b when the first support rib 211 protrudes toward the first surface 20a. For example, when the body 20 is manufactured through a pulp molding process, a structure of a mold corresponding to the first support rib 211 is a narrow groove. A solid first support rib 211 may be manufactured by filling paper pulp into the narrow groove. During actual manufacturing, a depth of 5-10 millimeters may exist in the narrow groove that cannot be filled with pulp, but this does not affect the substantially solid structure of the first support rib 211 obtained by demolding.

[0056] Therefore, the packing mat 2 is provided with solid ribs in the first support region 21 corresponding to the first portion 12 of the household appliance 1 to improve the strength and / or rigidity of the region. Further, the first support region 21 accounts for a relatively small proportion of the total area of the body 20 compared with another region of the body 20. In this implementation, solid ribs are used within a limited area to implement buffering and supporting functions for the first portion 12 of the household appliance 1.

[0057] In some embodiments, along a direction of the second surface 20b pointing to the first surface 20a, a height of the first support rib 211 may be in a range of 40-50 millimeters.

[0058] In a specific implementation, still referring to FIG. 4, FIG. 8, and FIG. 9, a plurality of first support ribs 211 may be distributed in a staggered manner in a two-dimensional direction. Specifically, the two-dimensional direction may include an extension direction of an outer boundary of the first surface 20a (which corresponds to the x-direction and the y-direction in the assembly state shown in FIG. 1). Correspondingly, a part of the plurality of first support ribs 211 extends substantially parallel to the x-direction, and the remaining part extends substantially parallel to the y-direction. A crisscross arrangement design can further enhance the strength and / or rigidity of the first support region 21.

[0059] In some embodiments, the plurality of first support ribs 211 may be arranged in a fishbone shape. The plurality of first support ribs 211 arranged in the fishbone shape can evenly disperse the acting force when impacted by the household appliance 1, resulting in excellent bearing performance of the entire first support region 21 and more reliable protection for the household appliance 1.

[0060] Specifically, the plurality of first support ribs 211 may include a first longitudinal rib 212 extending along the y-direction and a plurality of first transverse ribs 213 extending along the x-direction. The plurality of first transverse ribs 213 are arranged at intervals along an extension direction (that is, the y-direction) of the first longitudinal rib 212.

[0061] The extension direction of the first longitudinal rib 212 may be determined based on an extension direction of the first portion 12. A refrigerator is used as an example. The bottom surface 131a of the side bracket 131 substantially extends along the y-direction. Correspondingly, the first longitudinal rib 212 also extends along the y-direction. Further, referring to FIG. 6, FIG. 7, and FIG. 10, the first longitudinal rib 212 may be aligned with the bottom surface 131a of the side bracket 131. Therefore, a relatively long first longitudinal rib 212 extending longitudinally is aligned with the bottom surface 131a of the side bracket 131, which is beneficial to provide more balanced buffer and support to the side bracket 131 when the refrigerator falls.

[0062] As the extension direction of the first longitudinal rib 212 is determined, an extension direction of the first transverse rib 213 may be further determined. For example, the first longitudinal rib 212, the first transverse rib 213, and a direction pointing to the second surface 20b from the first surface 20a are perpendicular to each other. The refrigerator is still used as an example. In response to the first longitudinal rib 212 extending along the y-direction, it may be determined that the first transverse rib 213 extends along the x-direction.

[0063] Further, a spacing between adjacent first transverse ribs 213 may be less than a spacing between adjacent second support ribs 22.

[0064] Therefore, the first support region 21 includes one first longitudinal rib 212 (corresponding to a spine of a fishbone) and a plurality of first transverse ribs 213 (corresponding to bones of the fishbone) that diverge outward from the first longitudinal rib 212. The first longitudinal rib 212 may correspond to a side bracket 131. When a refrigerator falls, the first longitudinal rib 212 is first impacted by the side bracket 131, and then the force on the first longitudinal rib 212 is further transmitted and dispersed to each of the first transverse ribs 213. The plurality of first transverse ribs 213 are designed to share the load of the first longitudinal rib 212, so that the overall bearing performance of the first support region 21 is excellent, thereby providing more reliable protection for the household appliance 1.

[0065] In some embodiments, for each first transverse rib 213 among the plurality of first transverse ribs 213, the first transverse rib 213 may extend from the first longitudinal rib 212 to at least one side. In other words, for each first transverse rib 213, the first transverse rib 213 starts from the first longitudinal rib 212 or passes through the first longitudinal rib 212 along the extension direction. Therefore, based on a space size between the first support region 21 and a surrounding structure of the body 20, a length of the first transverse rib 213 extending along the extension direction and a direction of extending out of the first longitudinal rib 212 are flexibly set, which not only facilitates manufacturing but also makes full use of space, thereby enhancing the rigidity of the first support region 21.

[0066] In some embodiments, the lengths of the plurality of first transverse ribs 213 along the x-direction may be the same or may be different. Further, the length of the longest first transverse rib 213 along the x-direction may be less than the length of the first longitudinal rib 212 extending along the y-direction, to correspondingly support a bottom surface 131a of a rectangular (a size in the y-direction is greater than a size in the x-direction) side bracket 131.

[0067] In some embodiments, a width of the first longitudinal rib 212 may be greater than a width of the first transverse rib 213. The width refers to a size perpendicular to an extension direction of a support rib and a z-direction. A first longitudinal rib 212 having a larger width can support the first portion 12 (for example, the side bracket 131) more stably when the household appliance 1 falls, to avoid affecting a protection effect due to the first support region 21 being collapsed. Further, the first transverse rib 213 preferably plays a role in sharing the load of the first longitudinal rib 212. Therefore, the first transverse rib 213 can be relatively small in width, so that as many first transverse ribs 213 as possible are arranged in the limited space. This helps to better distribute the load of the first longitudinal rib 212.

[0068] For example, the width of the first longitudinal rib 212 may be in a range of [10, 13] millimeters.

[0069] For another example, the width of the first transverse rib 213 may be in a range of [9, 12] millimeters.

[0070] Further, for any first support rib 211 among the first longitudinal rib 212 and the first transverse rib 213, a width of the first support rib 211 may be less than a width of the second support rib 22.

[0071] In a specific implementation, still referring to FIG. 9, for each first transverse rib 213 among the plurality of first transverse ribs 213, a non-zero gap gap1 may be defined between an end of the first transverse rib 213 along the extension direction and an adjacent structure of the body 20. Specifically, the remaining region of the body 20 may include a buffer support region 24 adjacent to the first support region 21. The buffer support region 24 may include a first buffer rib 2411. At least one first transverse rib 213 stops extending before being connected to the first buffer rib 2411, so that the non-zero gap gap1 is formed between the first transverse rib 213 and the buffer support region 24.

[0072] Further, with reference to FIG. 4, the remaining region of the body 20 may further include a sunk region 26 adjacent to the first support region 21. Most of the buffer support region 24 is located between two sunk regions 26 that are symmetrically arranged, and a portion of the buffer support region 24 is located in front of the sunk region 26. The sunk region 26 is recessed toward the second surface 20b with respect to the first support region 21, so as to avoid a rear roller 135 of the household appliance 1, as shown in FIG. 13.

[0073] Further, the first transverse rib 213 extends from the first longitudinal rib 212 toward the sunk region 26. A portion of each first transverse rib 213 among the plurality of first transverse ribs 213 extends to connect to the sunk region 26. The remaining first transverse rib 213 among the plurality of first transverse ribs 213 stops extending before being connected to the sunk region 26, so that a non-zero gap gap1 is formed between the first transverse rib 213 and the sunk region 26.

[0074] Similarly, the first transverse rib 213 may be connected to a side surface of the body 20 when extending toward a direction away from the sunk region 26 along the x-direction. Alternatively, the first transverse rib 213 may stop extending before reaching the side surface of the body 20 to form the non-zero gap gap1.

[0075] In a non-restrictive scenario, the first transverse rib 213 is at least partially separated from an adjacent structure, so as to provide a sufficient avoidance space to form the sunk region 26 and further help the first support rib 211 to have a certain degree of buffering performance. When the refrigerator falls, the acting force of the side bracket 131 is transmitted to the plurality of first transverse ribs 213 through the first longitudinal rib 212. The design of the gap gap1 allows the first transverse ribs 213 to have a certain degree of deformation space.

[0076] In some embodiments, still referring to FIG. 9, the first transverse rib 213 may include a first section 2131 close to the second surface 20b and a second section 2132 close to the first surface 20a. The first section 2131 is connected to the adjacent structure, and a non-zero gap gap1 is defined between the second section 2132 and the adjacent structure. For example, the first section 2131 may be connected to and flush with the sunk region 26. The second section 2132 extends out of the first section 2131 in a direction away from the second surface 20b and is higher than the sunk region 26. A bottom of the first transverse rib 213 extends to be connected to the adjacent structure to ensure the overall structural strength and an accurate position of the first support rib 211. An upper section of the first transverse rib 213 is disconnected from the adjacent structure to facilitate manufacturing of the first support rib 211. For example, a solid rib is formed to ensure the rigidity of the first support region 21.

[0077] In a variation, the first section 2131 may be eliminated. In other words, no connection exists the first transverse rib 213 and the adjacent structure. In an actual application, based on the required strength and / or rigidity of the first support region 21 and manufacturing convenience, it may be determined whether the gap gap1 needs to be designed between the first transverse rib 213 and the adjacent structure, and a depth of the gap gap1 along the z-direction may be determined.

[0078] In a specific implementation, compared with the first support rib 211 in a solid structure, the second support rib 22 arranged in the remaining region of the body 20 may be hollow.

[0079] Specifically, referring to FIG. 7, FIG. 10, FIG. 11, and FIG. 14, for any one of the plurality of second support ribs 22, the second support rib 22 may be formed by the first surface 20a protruding along the first direction and recessed on a corresponding second surface 20b along the first direction to form a groove 221. Alternatively, the second support rib 22 may be formed by the second surface 20b protruding along an opposite direction of the first direction and recessed on a corresponding first surface 20a along the opposite direction of the first direction to form a groove 221. The first direction is parallel to a direction of the first surface 20a pointing to the second surface 20b.

[0080] In other words, in addition to having a relatively large thickness in the first support region 21 along the z-direction, the body 20 has a substantially uniform thickness at all positions in the remaining regions. This is equivalent to a plate-like member protruding or recessed at different positions to form a plurality of second support ribs 22.

[0081] A region (that is, the remaining region) of the body 20 other than the first support region 21 needs to provide relatively low support strength when the household appliance 1 falls.

[0082] Therefore, a hollow rib arranged in the remaining region can substantially satisfy a protection requirement for the household appliance 1. Therefore, the body 20 facilitates overall processing, reduces material usage, and is low-carbon, which contributes to saving resources and energy.

[0083] In a specific implementation, still referring to FIG. 4 to FIG. 6, FIG. 8, and FIG. 10 to FIG. 12, the body 20 may include a buffer support region 24 corresponding to a support portion 14 of the household appliance 1, and a non-zero gap exists between the buffer support region 24 and the support portion 14 to absorb potential energy generated by downward movement of the support portion 14.

[0084] A refrigerator is used as an example. A support plate 132 for bearing a compressor 134 may be adapted to form the support portion 14.

[0085] Specifically, the body 20 may be divided into a main support region 25 and a buffer support region 24 depending on whether the regions provide actual support when the household appliance 1 is placed in a normal position (as shown in FIG. 1). The buffer support region 24 corresponds to the support portion 14, and the household appliance 1 does not come into contact with the support portion 14 when stationary. The main support region 25 correspondingly supports at least one portion of the household appliance 1, that is, a support rib of the main support region 25 always maintains contact with the bottom of the household appliance 1. The main support region 25 may be further divided into a first support region 21 and another support region (for example, a second support region 251, a bottom hinge support region 252, a side plate support region 253, a door body support region 254, and a bottom beam support region 255) based on different strength and / or rigidity.

[0086] Further, the buffer support region 24 may be located between two first support regions 21. In other words, two first support regions 21 are located on two sides of the buffer support region 24 along the x-direction. In some embodiments, a sunk region 26 may further be arranged between the buffer support region 24 and the first support region 21.

[0087] Further, along the z-direction, a non-zero gap may be defined between the support plate 132 and the buffer support region 24. In other words, when the household appliance 1 is normally placed (for example, stationary), the support plate 132 and the buffer support region 24 are not in contact with each other. The compressor compartment 13 is mainly supported on the corresponding first support regions 21 by the two side brackets 131 respectively. In other words, the support portion 14 (for example, the support plate 132) is supported by the connected first portion 12 (for example, each of the side brackets 131). Correspondingly, the first support regions 21 are arranged on two sides of the buffer support region 24 to correspondingly support the first portion 12, thereby providing protection when the household appliance 1 is placed in a normal position. Further, the sunk region 26 may also properly support two ends of the support plate 132 along the x-direction, but most of the region of the support plate 132 is suspended above the buffer support region 24.

[0088] Therefore, the packing mat 2 is provided with the buffer support region 24. The buffer support region 24 does not play an actual supporting role when the household appliance 1 in a packed state is normally placed. For example, during a falling test, the support portion 14 of the household appliance 1 moves downward due to falling, and a gap between the buffer support region 24 and the support portion 14 gradually decreases until in contact with each other. In this case, potential energy generated through falling of the support portion 14 is absorbed by the buffer support region 24, thereby implementing reliable protection for the household appliance 1 (especially the support portion 14) during the falling test. Further, the buffer support region 24 is a part of the body 20. The entire body 20 is made of a paper material, which is green and environmentally friendly.

[0089] Further, the support portion 14 of the household appliance 1 is configured to support most of the weight of the household appliance 1, and therefore requires special protection when the household appliance 1 falls. In the packing mat 2 provided in this implementation, the buffer support region 24 is specially arranged for the support portion 14, which plays a buffer role when the household appliance 1 falls, to avoid causing an adverse effect due to excessive rigidity of the body 20, and provide flexible support for the support portion 14. Therefore, the body 20 has both better bearing performance and buffer performance, which can provide a better protection effect for the household appliance 1.

[0090] In a specific implementation, still referring to FIG. 4 to FIG. 6, FIG. 8, and FIG. 10 to FIG. 12, the buffer support region 24 may include: a peripheral region 241, and a middle platform region 242 recessed from the peripheral region 241 and at least partially surrounded by the peripheral region 241. In other words, a surface of the buffer support region 24 facing the support plate 132 may be uneven.

[0091] Specifically, to match a shape of the support plate 132, the buffer support region 24 may be substantially rectangular, and have a larger size in the x-direction than in the y-direction. Further, the peripheral region 241 surrounds the middle platform region 242 from a front side and / or a rear side at least in the y-direction.

[0092] If a support region corresponding to the support portion 14 is formed by a large plane, the support region has strong rigidity, which is not beneficial to absorb the potential energy during the falling of the household appliance 1. By contrast, the buffer support region 24 of this implementation is designed to be concave in the middle and convex on the periphery to achieve stepped buffering. Specifically, when the household appliance 1 falls, the support portion 14 first presses the peripheral region 241 downward. The peripheral region 241 absorbs energy during the falling of the household appliance 1. The middle platform region 242 in the middle is recessed to provide a certain support after a support surface of the peripheral region 241 is compressed during the falling, so as to prevent the support portion 24 from continuing to deform downward, thereby effectively protecting the support portion 14. In other words, the second support region 251 supports the bottom plate 133. A concave portion formed in the middle platform region 242 provides a deformation space. When the household appliance 1 falls, part of downward potential energy of the support plate 132 is absorbed by the peripheral region 241. The remaining part is transferred to a bottom of the body 20 (for example, transferred to a base 23 of the bearing body 20) and then reacts on the middle platform region 242, to ensure that the middle platform region 242 can reliably support the support plate 132.

[0093] In some embodiments, referring to FIG. 12, a spacing L1 between the peripheral region 241 and the support portion 14 (for example, the support plate 132) may be in a range of [6, 8] millimeters. Therefore, the peripheral region 241 can support the support portion 14 in the first time when the household appliance 1 falls, to avoid generating excessive potential energy due to an excessively long free-fall distance of the support portion 14. It should be noted that the illustration shown in FIG. 13 does not show a gap between the peripheral region 241 (for example, the first buffer rib 2411) and the support plate 132 due to a magnification factor limitation. However, in a practical application, a spacing L1 also exists between the peripheral region 241 and the support plate 132 in a profile position shown in FIG. 13.

[0094] In some embodiments, referring to FIG. 12, a spacing L2 between the middle platform region 242 and the support portion 14 (for example, the support plate 132) may be in a range of [12, 20] millimeters. Therefore, the middle platform region 242 is recessed by a sufficient distance in a direction away from the household appliance 1, so as to provide a sufficient buffer space.

[0095] L1 and L2 are adapted to form a gap between the buffer support region 24 and the support portion 14.

[0096] In a specific implementation, still referring to FIG. 4 to FIG. 6, FIG. 8, and FIG. 10 to FIG. 12, the peripheral region 241 may include one or more first buffer ribs 2411. The plurality of first buffer ribs 2411 are arranged at intervals in the y-direction. Each of the first buffer ribs 2411 extends along the x-direction. In the figure, an example in which two first buffer ribs 2411 are arranged at an interval along the y-direction is used for exemplary illustration. The two first buffer ribs 2411 respectively form front and rear boundaries of the buffer support region 24. Generally, the size of the support portion 14 in the x-direction is greater than the size of that in the y-direction. Correspondingly, the first buffer rib 2411 extending along the x-direction can evenly support the entire support portion 14 (for example, the support plate 132) in the x-direction during the falling test, to prevent a phenomenon such as skewing when the household appliance 1 falls.

[0097] Further, the middle platform region 242 may include a plurality of second buffer ribs 2421 that are staggered. For example, the plurality of second buffer ribs 2421 are arranged in a crossed manner in the x-direction and the y-direction. Therefore, the strength and / or rigidity of the middle platform region 242 is improved to ensure that the support portion 14 that continues to fall after the peripheral region 241 is subjected to compression deformation can be reliably supported by the middle platform region 242.

[0098] In some embodiments, the plurality of first buffer ribs 2411 are independent of each other. For example, referring to FIG. 10, two front-rear first buffer ribs 2411 are spaced apart from each other and separately extend along the x-direction. Therefore, a buffer protection effect is prevented from being affected due to excessively strong rigidity of the buffer support region 24. Further, the first buffer ribs 2411, on the basis of a general extension trend along the x-direction, may have at least one interruption or partial interruption in an extension path for the purpose of arranging reinforcing ribs 27. For example, from the prospective of FIG. 4, the front first buffer rib 2411 of the two first buffer ribs 2411 is broken into a plurality of sections along the x-direction, and the reinforcing ribs 27 may be arranged between two adjacent sections to enhance strength of the second buffer ribs 2421 and / or a boss structure 103. For another example, from the prospective of FIG. 4, for the rear first buffer rib 2411 of the two first buffer ribs 2411, the first half of the first buffer rib 2411 is a complete rib structure extending along the x-direction, and the second half is broken into a plurality of sections along the x-direction. A discontinuous region (similar to a groove 221 recessed toward the second surface 20b) between adjacent sections may also be used for arrangement of the reinforcing rib 27.

[0099] Further, the first buffer rib 2411 and the second buffer rib 2421 may be connected to each other. For example, still referring to FIG. 10, in a plurality of second buffer ribs 2421 located between the two front and rear first buffer ribs 2411, ends of the second buffer ribs 2421 extending along the y-direction are respectively connected to the two front and rear first buffer ribs 2411, so that the entire buffer support region 24 is connected into a whole through the second buffer ribs 2421. Therefore, it is ensured that the buffer support region 24 has a degree of rigidity and strength, to flexibly support a falling support portion 14. In a specific implementation, still referring to FIG. 4, FIG. 8, FIG. 10, and FIG. 11, the buffer support region 24 may further include a plurality of reinforcing ribs 27 dispersedly arranged in the peripheral region 241 and / or the middle platform region 242. A height of the reinforcing rib 27 along the first direction is less than that of the peripheral region 241 and the middle platform region 242. To be specific, the reinforcing rib 27 is further recessed in the middle platform region 242 in a direction away from the household appliance 1.

[0100] Further, the rigidity and / or strength of the reinforcing rib 27 is greater than the rigidity and / or strength of the peripheral region 241 and the middle platform region 242. Therefore, the reinforcing rib 27 is arranged in the buffer support region 24 to play a reinforcing role and enhance structural strength of the first buffer rib 2411 and / or the second buffer rib 2421. The reinforcing rib 27 does not play a supporting role, and therefore is designed to be lower in height than the first buffer rib 2411 and the second buffer rib 2421.

[0101] For example, referring to FIG. 4, FIG. 8, and FIG. 10, the reinforcing rib 27 may extend along the y-direction and extend through the entire buffer support region 24. To be specific, a single reinforcing rib 27 may connect in series two front and rear first buffer ribs 2411 and at least one second buffer rib 2421 located between these two first buffer ribs 2411. Further, a plurality of reinforcing ribs 27 may be arranged and are arranged at intervals in the buffer support region 24 along the x-direction. One reinforcing rib 27 may be arranged between any two adjacent second buffer ribs 2421 extending along the y-direction.

[0102] In some embodiments, similar to the first support rib 211, the reinforcing rib 27 may be a solid structure extending from the second surface 20b to the first surface 20a. A difference lies in that a height of the reinforcing rib 27 extending toward the household appliance 1 is less than that of the first support rib 211, so as to preferably play a role in enhancing the structural strength rather than an actual supporting role. Therefore, a solid rib is used to enhance the strength and / or rigidity of the buffer support region 24, and cooperate with the concave-shaped buffer support region 24 to reliably achieve stepped buffering for the support portion 14.

[0103] In some embodiments, similar to the second support rib 22, for any one of the first buffer rib 2411 and the second buffer rib 2421, the buffer rib may also be a hollow rib. Specifically, the buffer rib may be formed by the first surface 20a protruding along the first direction and recessed on a corresponding second surface 20b along the first direction to form a groove 221. Alternatively, the buffer rib may be formed by the second surface 20b protruding along an opposite direction of the first direction and recessed on a corresponding first surface 20a along the opposite direction of the first direction to form a groove 221.

[0104] Therefore, any one of the first buffer rib 2411 and the second buffer rib 2421 is a hollow rib, to reduce the rigidity of the buffer rib to a certain extent, thereby ensuring that the buffer rib can better play a buffering and protective role. Further, the body 20 facilitates overall processing, reduces material usage, and is low-carbon, which contributes to saving resources and energy.

[0105] In a specific implementation, still referring to FIG. 4, FIG. 6, FIG. 8, FIG. 10, and FIG. 11, the main support region 25 correspondingly supports another portion of the household appliance 1. Correspondingly, the main support region 25 is higher than the buffer support region 24 along the z-direction. To be specific, the main support region 25 protrudes from the buffer support region 24 toward the household appliance 1. Therefore, when the household appliance 1 in a packed state is normally placed, the main support region 25 supports a bottom of the entire household appliance 1, and the buffer support region 24 lower than the main support region 25 mainly plays an elastic buffering role when the household appliance 1 in a packed state falls.

[0106] In a specific implementation, referring to FIG. 3, FIG. 4, FIG. 8, and FIG. 10, the second support region 251 is located in front of the buffer support region 24 along the y-direction. Specifically, a portion of the bottom plate 133 forming the bottom surface 10d of the main body 10 is located in front of the compressor compartment 13. Correspondingly, the second support region 251 that correspondingly supports the second portion 15 is located in front of the buffer support region 24 corresponding to the support portion 14.

[0107] When the household appliance 1 in a packed state is normally placed, the second support region 251 plays a supporting and protective role for the second portion 15 (for example, the bottom plate 133). When the household appliance 1 falls, the support portion 14 (for example, the support plate 132) that has a greater weight is to fall by a larger amount than the second portion 15, causing the household appliance 1 to have a tendency to tilt backward. In view of the above, in this implementation, the buffer support region 24 is arranged to provide flexible buffer support for the support portion 14, which not only can prevent causing a risk of overturning as a result of the household appliance 1 tilting backward, but also can protect the bottom of the household appliance 1 from being damaged due to falling.

[0108] Further, the first support region 21 and the second support region 251 jointly surround the buffer support region 24 in the middle, for example, jointly and cooperatively surround the buffer support region 24 from left and right sides and a front side. When the household appliance 1 is normally placed, the first support region 21 and the second support region 251 play a major supporting and protective role and suspend the support portion 14 above the buffer support region 24. When the household appliance 1 falls, the buffer support region 24 provides targeted buffering support and protection for the support portion 14. In this way, the bottom of the household appliance 1 is protected in all directions.

[0109] In some embodiments, a space between the bottom plate 133 and the chamber 101 is filled with a thermal insulation material to form a thermal insulation layer. The thermal insulation material needs to be foamed to form the thermal insulation layer after the gap between the bottom plate 133 and the chamber 101 is filled.

[0110] During the foaming, the bottom plate 133 may be pushed downward by an expanded thermal insulation material. Correspondingly, a slight gap may be reserved between the second support region 251 and the second portion 15 before the foaming is performed (that is, when no thermal insulation material is filled), so as to provide a deformation space for downward protrusion of the bottom plate 133 during the foaming. Preferably, after the foaming, most regions of the second portion 15 are reliably supported in the second support region 251.

[0111] In a specific implementation, still referring to FIG. 3 to FIG. 6, FIG. 8, FIG. 10, and FIG. 13, the body 20 may include a protrusion structure 203 located between the second support region 251 and the buffer support region 24. Specifically, the protrusion structure 203 may extend along the x-direction, and a length of the extension is similar to a length of the buffer support region 24.

[0112] Further, the protrusion structure 203 may include a top surface 203a higher than the second support region 251 and an inclined surface 203b extending obliquely from the top surface 203a toward the second support region 251. The inclined surface 203b corresponds to a rear surface 15a of the second portion 15, for example, a portion of the bottom plate 133 forming a front surface of the compressor compartment 13.

[0113] When the household appliance 1 is normally placed, a non-zero gap may be defined between the inclined surface 203b and the rear surface 15a of the second portion 15. When the household appliance 1 falls (for example, during a drop test), the inclined surface 203b may support the rear surface 15a that tilts backward, thereby cooperating with the buffer support region 24 to better protect the bottom structure of the household appliance 1.

[0114] Therefore, the inclined surface 203b can serve as a buffer to support the rear surface 15a of the second portion 15 when the household appliance 1 falls. This can also disperse the impact force of the support portion 14 on the buffer support region 24 to a certain extent, to further enhance the bearing performance of the body 20 (for example, the buffer support region 24).

[0115] In some embodiments, similar to the second support rib 22, the first buffer rib 2411, and the second buffer rib 2421, the protrusion structure 203 may also be a hollow rib. A difference lies in that a height of the protrusion structure 203 along the z-direction is greater than that of the second support rib 22.

[0116] In some embodiments, still referring to FIG. 4 and FIG. 8, at least one side of the protrusion structure 203 may be provided with a plurality of reinforcing ribs 27 at intervals. For example, a front side and / or a rear side of the protrusion structure 203 along the y-direction may be provided with the reinforcing ribs 27 extending outward along the y-direction from the protrusion structure 203. The plurality of reinforcing ribs 27 are arranged at intervals along the x-direction. In this way, the structural strength of the protrusion structure 203 inserted between the support portion 14 and the second portion 15 is enhanced.

[0117] Further, the protrusion structure 203 includes two unconnected sections along the x-direction. Each section includes a plurality of (for example, two) sets of bosses. Each set of bosses includes a plurality of (for example, two) bosses connected at roots (that is, portions close to the second surface 20b). A top surface 203a of each boss is recessed to form a convex rib extending toward the second surface 20b. The convex rib may also function as a reinforcing rib 27 to enhance the structural strength of a single boss. Further, a reinforcing rib 27 protruding toward the household appliance 1 may be connected between two adjacent sets of bosses to enhance the structural strength of the entire section.

[0118] In a specific implementation, still referring to FIG. 4, FIG. 6, and FIG. 8, the second support region 251 may be dispersedly provided with a plurality of reinforcing ribs 27. The reinforcing ribs 27 are lower than the second support region 251, and the rigidity and / or strength of the reinforcing ribs 27 is greater than the rigidity and / or strength of the second support region 251. Specifically, if a plurality of second support ribs 22 arranged in a staggered manner in the second support region 251 are spaced apart from each other by a relatively large spacing, a reinforcing rib 27 may be preferably added between two adjacent second support ribs 22 along the x-direction, to enhance the overall structural strength and rigidity of the second support region 251. For example, the reinforcing rib 27 extends along the x-direction to between two adjacent second support ribs 22 extending along the y-direction.

[0119] Therefore, the reinforcing rib 27 is arranged in the second support region 251 to play a reinforcing role and enhance structural strength of the second support region 251. The reinforcing rib 27 does not play a supporting role, and therefore is designed to be lower in height than support ribs of the second support rib 251.

[0120] In some embodiments, for any region on the body 20 such as a main support region 25 and a buffer support region 24, if a spacing between adjacent ribs (including a support rib and a buffer rib) in the region is relatively large, it may be considered that a reinforcing rib 27 is arranged between adjacent ribs to enhance the structural strength of the region.

[0121] In a specific implementation, still referring to FIG. 4, FIG. 5, FIG. 6, and FIG. 8, the body 20 may further include a bottom hinge support region 252 for correspondingly supporting a bottom hinge (not shown) of the household appliance 1. Specifically, the door 11 is rotatably connected to the main body 10 through the bottom hinge. Further, the bottom hinge support region 252 includes at least a second support rib 22 extending along the y-direction. From the perspective of FIG. 4, the bottom hinge support region 252 may be located at left and right lower corners of the body 20.

[0122] In a specific implementation, still referring to FIG. 4, FIG. 5, FIG. 8, FIG. 10, and FIG. 11, the body 20 may further include a side plate support region 253 for correspondingly supporting a side plate 102 of the household appliance 1. Further, the side plate support region 253 may also include second support ribs 22 arranged in a staggered manner. From the perspective of FIG. 4, the side plate support region 253 may be located on left and right sides of the body 20 and located between a first support region 21 and a bottom hinge support region 252 on a corresponding side. Further, a second support region 251 may be located between two side plate support regions 253.

[0123] In a specific implementation, still referring to FIG. 4, FIG. 6, FIG. 8, and FIG. 10, the body 20 may further include a door body support region 254 for correspondingly supporting a door 11. Further, the door body support region 254 may include a plurality of second support ribs 22 arranged in a staggered manner and a reinforcing rib 27. From the perspective of FIG. 4, the door body support region 254 is located between two bottom hinge support regions 252.

[0124] In a specific implementation, still referring to FIG. 4 and FIG. 10, the body 20 may further include a bottom beam support region 255 for correspondingly supporting a bottom beam 16 of the household appliance 1. The bottom beam 16 is adapted to form a front surface of the main body 10, and the bottom beam 16 may be connected to a bottom plate 133. From the perspective of FIG. 4, the bottom beam support region 255 is located between the door body support region 254 and the second support region 251. Further, the bottom beam support region 255 may include a second support rib 22 extending along the x-direction and a reinforcing rib 27 extending from the second support rib 22 along the y-direction. Further, the bottom beam support region 255 may be provided with an avoidance region 2551 to correspondingly avoid a front roller 161 arranged on the bottom beam 16.

[0125] In a specific implementation, still referring to FIG. 2, FIG. 3, and FIG. 5 to FIG. 11, the packing mat 2 may further include a base 23. The base 23 includes a bottom wall 231 and a circle of side walls 232. The bottom wall 231 and the circle of side walls 232 jointly define an upwardly open accommodating space 233 for accommodating the body 20.

[0126] Specifically, the body 20 may be placed in the accommodating space 233 with the second surface 20b facing the accommodating space 233, so as to complete assembly of the body 20 and the base 23 to obtain the packing mat 2.

[0127] Further, similar to the body 20, the base 23 may also be made of a paper material. Therefore, the body 20 and the base 23 are assembled as a whole to protect the bottom of the household appliance 1. The entire packing mat 2 is made of a paper material. After the household appliance 1 is unpacked, the entire packing mat 2 can be recycled and reused, which is green and environmentally friendly. For example, the base 23 may be made of corrugated paper, so that the base 23 is manufactured by making full use of properties of easy forming, easy folding, and puncture resistance of a corrugated cardboard.

[0128] Further, a size of the bottom wall 231 may be adapted to a size of the second surface 20b. The side wall 232a is adapted to substantially cover a side surface of the body 20. Referring to FIG. 14, the support ribs (for example, the second support ribs 22) formed on the body 20 result in an uneven bottom surface (that is, the second surface 20b) of the body 20. A base 23 is arranged underneath, so that the bottom surface of the packing mat 2 is flattened, and the household appliance 1 in the packed state can be placed more stably on the ground.

[0129] In some embodiments, a non-zero gap may be defined between the bottom wall 231 and / or the side wall 232 and the body 20. For example, factors such as the manufacturing process may result in the second support ribs 22 (which protrude from the body 20 toward the second surface 20b) failing to be strictly flush with the second surface 20b. This leads to existence of the non-zero gap between the second surface 20b and the bottom wall 231 after the body 20 is placed into the accommodating space 133. For another example, a peripheral edge of the body 20 may be slightly inclined and folded outward to form a side surface. This design is likely considered for demolding convenience (by providing a relatively large draft angle). This may result in a non-zero gap between the side surface of the body 20 and the side wall 232 after the body 20 is placed into the accommodating space 133, as shown in FIG. 13.

[0130] Further, in this implementation, a protective member 3 is filled between the body 20 and the base 23, especially in a position where a gap exists, so as to reduce or even fill the gap, and prevent the base 23 from being deformed by a packing strap.

[0131] Further, the protective member 3 may also be made of a paper material. For example, the protective member 3 may be formed by folding corrugated paper. For another example, the protective member 3 may be formed by a plurality of layers of paper materials that are stacked. Different layers may be made of paper materials of different materials. A thickness of the protective member 3 may be approximately 5 millimeters.

[0132] During assembly of a packing mat 2, the protective member 3 may be attached to a corresponding position of the base 23, and then a second surface 20b of the body 20 is attached to the base 23 to which the protective member 3 is attached. Starch glue may be used for adhesion to further enhance environmental friendliness.

[0133] Alternatively, the protective member 3 may be first attached to the second surface 20b of the body 20 to obtain a structure shown in FIG. 14. Then the base 23 is attached to the second surface 20b. In this way, the packing mat 2 may also be obtained through assembly.

[0134] In a specific implementation, referring to FIG. 13, the body 20 may include a first flange 201 covering an upper surface 232a of a side wall 232. Specifically, the first flange 201 may be substantially parallel to a bottom wall 231.

[0135] Further, a body 20 may further include a second flange 202 folded from the first flange 201 toward a second surface 20b. The second flange 202 covers at least part of an outer surface 232b of the side wall 232. For example, the second flange 202 may cover the outer surface 232b of the side wall 232 by about 20 mm.

[0136] After the body 20 is placed in the base 23, the second flange 202 may be adhered to the outer surface 232b of the side wall 232 through a hot melt adhesive. Further, the first flange 201 and the upper surface 232a of the side wall 232 may also be bonded and fixed.

[0137] In a scene where the base 23 is formed through cutting and folding of corrugated paper, a cross section of the corrugated paper is sharp and rough. Therefore, in this implementation, an edge of the body 20 is folded downward and wraps around the outer edge of the side wall 232, preventing sharp surfaces of the base 23 (for example, edges and corners of the paper base 23) from being exposed, thereby reducing the risk of personnel being scratched during production line assembly.

[0138] In some embodiments, the first flange 201 extends continuously along a circle of edges of the body 20. In contrast, the second flange 202 intermittently extends along the circle of edges of the body 20. A cutout between two adjacent second flanges 202 may facilitate assembly of the packing mat 2. During the assembly, the second flange 202 may have a slight allowance for outward spreading, so that a side wall 232 can be more easily inserted between the second flange 202 and the body 20 for quick assembly in place. Further, during manufacturing of the body 20, if no cutout is designed, the second flange 202 may obliquely extend from the first flange 201 toward the second surface 20b and the body 20, affecting accurate sleeving of the body 20 onto the base 23.

[0139] In a specific implementation, still referring to FIG. 1 to FIG. 13, a plurality of guide platforms 204 may be arranged at intervals on the first flange 201, which serves to guide the packing box 4 to slide down from the top of the household appliance 1 until the packing box is sleeved on an outer side of the packing mat 2. Specifically, guide platforms 204 are arranged at intervals along the y-direction on at least two first flanges 201 opposite to each other along the x-direction. A side of the guide platform 204 away from a side surface 10b of a main body 10 is provided with an inclined surface inclined outward and downward.

[0140] During assembly, the household appliance 1 is placed on the packing mat 2, a top mat 5 is placed on a top of the household appliance 1, an edge mat 6 is to cover side ridges of the household appliance 1, and the packing box 4 is fit over from top to bottom. When sliding downward to be close to the packing mat 2, the packing box 4 quickly slides to an outer side surface of the entire base 23 under the guide of the guide platform 204, which reduces a probability that the packing box gets stuck on the first flange 201 or on a joint between the body 20 and the base 23.

[0141] Although specific implementations have been described above, these implementations are not intended to limit the scope of the present disclosure, even if the same is true for a case that a single implementation is described only with respect to specific features. The feature examples provided in the present disclosure are intended to be illustrative and not limiting, unless otherwise stated. In a specific embodiment, technical features of one or more dependent claims may be combined with technical features of the independent claims, and the technical features from the corresponding independent claims may be combined in any appropriate manner rather than only through a specific combination listed in the claims.

[0142] Although the present invention is disclosed above, the present invention is not limited thereto. A person skilled in the art can make various changes and modifications without departing from the spirit and the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A packing mat for a household appliance, supporting at least one surface of the household appliance for packing, the packing mat comprising a body (20) made of a paper material, characterized in that the body (20) comprises: a buffer support region (24), corresponding to a support portion (14) of the household appliance, wherein a non-zero gap is defined between the buffer support region (24) and the support portion (14) to absorb potential energy generated by downward movement of the support portion (14).

2. The packing mat for a household appliance according to claim 1, characterized in that the buffer support region (24) comprises: a peripheral region (241), and a middle platform region (242) recessed from the peripheral region (241) and at least partially surrounded by the peripheral region (241).

3. The packing mat for a household appliance according to claim 2, characterized in that a spacing between the peripheral region (241) and the support portion (14) is in a range of six to eight millimeters; and / or a spacing between the middle platform region (242) and the support portion (14) is in a range of twelve to twenty millimeters.

4. The packing mat for a household appliance according to claim 1 or 2, characterized in that the peripheral region (241) comprises one or more first buffer ribs (2411), wherein the plurality of first buffer ribs (2411) are arranged at intervals along a depth direction of the household appliance, and each of the first buffer ribs (2411) extends along a width direction of the household appliance; and / or the middle platform region (242) comprises a plurality of second buffer ribs (2421) arranged in a staggered manner.

5. The packing mat for a household appliance according to claim 4, characterized in that the plurality of first buffer ribs (2411) are independent of each other; and / or each of the first buffer ribs (2411) is connected to each of the second buffer ribs (2421).

6. The packing mat for a household appliance according to at least claim 2, characterized in that the buffer support region (24) further comprises a plurality of reinforcing ribs (27) that are dispersed in the peripheral region (241) and / or the middle platform region (242), wherein the reinforcing ribs (27) are lower than the peripheral region (241) and the middle platform region (242), and rigidity and / or strength of the reinforcing ribs (27) is greater than rigidity and / or strength of the peripheral region (241) and the middle platform region (242).

7. The packing mat for a household appliance according to claim 6, characterized in that the body (20) has a first surface (20a) facing the household appliance and a second surface (20b) opposite to the first surface (20a), and each of the reinforcing ribs (27) is a solid structure extending from the second surface (20b) to the first surface (20a); and / or the peripheral region (241) and the middle platform region (242) each comprise a plurality of buffer ribs, the buffer ribs are formed by the first surface (20a) protruding along a first direction and recessed on a corresponding second surface (20b) along the first direction to form a groove (221), and / or the buffer ribs are formed by the second surface (20b) protruding along an opposite direction of the first direction and is recessed on the corresponding first surface (20a) along the opposite direction of the first direction to form a groove (221), and the first direction is parallel to a direction of the first surface (20a) pointing to the second surface (20b).

8. The packing mat for a household appliance according to one of the preceding claims, characterized in that the body (20) further comprises: a main support region (25), correspondingly supporting another portion of the household appliance, wherein the main support region (25) is higher than the buffer support region (24).

9. The packing mat for a household appliance according to claim 8, characterized in that the main support region (25) comprises a first support region (21) for correspondingly supporting a first portion (12) of the household appliance, wherein the first support region (21) is located on two sides of the buffer support region (24) along a width direction of the household appliance; and / or the main support region (25) comprises a second support region (251) for correspondingly supporting a second portion (15) of the household appliance, wherein the second support region (251) is located in front of the buffer support region (24) along a depth direction of the household appliance.

10. The packing mat for a household appliance according to claim 9, characterized in that the body (20) comprises: a protrusion structure (203), located between the second support region (251) and the buffer support region (24), wherein the protrusion structure (203) comprises a top surface (203a) higher than the second support region (251) and an inclined surface (203b) obliquely extending from the top surface (203a) toward the second support region (251), and the inclined surface (203b) corresponds to a rear surface (15a) of the second portion (15).

11. The packing mat for a household appliance according to claim 10, characterized in that at least one side of the protrusion structure (203) is provided with a plurality of reinforcing ribs (27) arranged at intervals.

12. The packing mat for a household appliance according to one of the preceding claims, characterized in that the household appliance is a refrigerator, comprising a compressor compartment (13) for accommodating a compressor (134), wherein the compressor compartment (13) comprises a bottom plate (133) defining a front surface of the compressor compartment (13) and a support plate (132) supporting the compressor (134), the support plate (132) forms the support portion (14), and the bottom plate (133) forms the second portion (15).

13. The packing mat for a household appliance according to at least claim 6 and 9, characterized in that a plurality of reinforcing ribs (27) are further dispersed in the second support region (251), wherein the reinforcing ribs (27) are lower than the second support region (251), and rigidity and / or strength of the reinforcing ribs (27) is greater than rigidity and / or strength of the second support region (251).

14. The packing mat for a household appliance according to one of the preceding claims, characterized in that the body (20) is manufactured through a pulp molding process.

15. A household appliance in a packed state, comprising: a main body (10), defining a chamber (101); and a door (11), configured to close the chamber (101), characterized in that the household appliance further comprises: the packing mat according to any one of claims 1 to 14, wherein the buffer support region (24) corresponds to the support portion (14) of the household appliance.

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