U-shaped shell of refrigerator and refrigerator

Abstract

The utility model belongs to the technical field of refrigerators, and particularly relates to a refrigerator U-shaped shell and a refrigerator. The U-shaped shell of the refrigerator comprises two opposite side plates and a top plate located between the two side plates. The two side plates are provided with side plate folding edges which are folded inwards; the top plate is smoothly connected with the two side plates through the two R angle plates respectively; a top plate folding edge folded inwards is arranged on the top plate; a mounting opening is formed between the top plate folding edge close to each R angle plate and the side plate folding edge; a corner piece is arranged at the installation opening, the two ends of the corner piece are connected with the top plate edgefold and the side plate edgefold respectively, the outer edge wall of the corner piece is connected with the outer wall of the R corner plate in sequence, and the appearance face of the corner piece, the appearance face of the top plate edgefold and the appearance face of the side plate edgefold are flush. The production efficiency of the U-shaped shell of the refrigerator can be improved, the production process is optimized, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigerators, and in particular relates to a U-shaped shell of a refrigerator and the refrigerator. Background Art

[0002] The shell of the refrigerator is usually a U-shaped shell, and the two corners of the U-shaped shell often adopt R-angle structure for smooth transition. At present, the U-shaped shell of the refrigerator is usually formed by a series of processes such as punching, flipping, rolling, ZL bending, and U-shaped bending from a steel plate; wherein, in the punching process, two V-shaped notches are cut on each of the two long sides of the steel plate; in the rolling and ZL bending processes, the steel plates on both sides of the V-shaped notch are folded inward to form folded edges; in the U-shaped bending process, the steel plate is bent as a whole by a U-shaped bending machine to form a U-shaped shell with a top plate and two side plates. At this time, the V-shaped notch is closed, and then the seams at the closed position are welded and polished. However, this conventional production method of the U-shaped shell of the refrigerator has the following shortcomings:

[0003] 1) There are many turnover processes in production, which may easily cause scratches, bruises and other poor appearance of the product;

[0004] 2) The welding and grinding processes take a long time and production efficiency cannot be improved;

[0005] 3) After welding and grinding, the product needs to be powder sprayed, which increases the production process and increases the production cost. Utility Model Content

[0006] In view of the deficiencies existing in the related art, the utility model provides a U-shaped shell of a refrigerator and a refrigerator, so as to improve the production efficiency of the U-shaped shell of the refrigerator, optimize the production process and reduce the production cost.

[0007] The utility model provides a U-shaped shell of a refrigerator, comprising:

[0008] Two side panels are arranged opposite to each other, and both side panels are provided with side panel folds folded inwards;

[0009] The top plate is located between the two side plates, and the top plate is smoothly connected to the two side plates through two R angle plates respectively; the top plate is provided with an inwardly folded top plate edge; a mounting opening is formed between the top plate edge near each R angle plate and the side plate edge;

[0010] Two corner pieces are respectively arranged at two installation openings; the two ends of each corner piece are respectively connected to the top plate folded edge and the side plate folded edge at the installation opening where it is located, the outer edge wall of the corner piece is smoothly connected with the outer wall of the R angle plate, and the appearance surface of the corner piece, the appearance surface of the top plate folded edge and the appearance surface of the side plate folded edge are flush.

[0011] In some embodiments, a first receiving platform facing the mounting opening is protruded from one end of the top plate folded edge near the mounting opening, and the surface of the first receiving platform is lower than the appearance surface of the top plate folded edge; a second receiving platform facing the mounting opening is protruded from one end of the side plate folded edge near the mounting opening, and the surface of the second receiving platform is lower than the appearance surface of the side plate folded edge; sockets are provided through the first receiving platform and the second receiving platform; two clamping columns matching the two sockets are protruded from the back of the corner piece, so that the corner piece can be clamped on the first receiving platform and the second receiving platform.

[0012] In some embodiments, the socket is a long and flat hole, and the long side direction of the socket on the first supporting platform is perpendicular to the long side direction of the socket on the second supporting platform; the clamping column is a long and flat convex column adapted to the socket, and a tongue is protruding from one side of the clamping column in the width direction outside the socket to enable the clamping column to be clamped with the socket.

[0013] In some of the embodiments, an arc-shaped clamping plate is protruded from the back of the corner piece, and the outer wall of the clamping plate fits with the inner wall of the R angle plate.

[0014] In some of the embodiments, a sunken platform is provided on the inner side of the corner piece away from the R angle plate, and the surface of the sunken platform is lower than the appearance surface of the corner piece; the sunken platform is connected to the appearance surface of the corner piece through a first side wall and a second side wall; the outer wall surface of the first side wall is aligned with the outer edge of the folded edge of the top plate, and the outer wall surface of the second side wall is aligned with the outer edge of the folded edge of the side plate.

[0015] In some embodiments, the side of the corner piece close to the folded edge of the top plate is a first splicing surface, and the first splicing surface is fitted with the end surface of the folded edge of the top plate close to the installation opening; the side of the corner piece close to the side folded plate is a second splicing surface, and the second splicing surface is fitted with the end surface of the folded edge of the side plate close to the installation opening.

[0016] In some of the embodiments, the corner piece is made from a pre-coated metal plate.

[0017] In some of the embodiments, the corner piece includes a metal shell and a mounting body located inside the metal shell; the appearance surface of the metal shell is flush with the appearance surface of the top plate folded edge and the appearance surface of the side plate folded edge, and the outer edge wall of the metal shell is smoothly connected with the outer wall of the R angle plate; the metal shell is made of metal pre-coated plate; the mounting body is made of plastic material, and is integrated with the metal shell through glue-encapsulating injection molding.

[0018] In some of the embodiments, at least one first positioning opening is respectively provided on the end of the metal shell near the folded edge of the top plate and the folded edge of the side plate; a plurality of second positioning openings are respectively provided on the outer edge wall of the metal shell near the end of the R angle plate; the metal shell includes a first connecting wall and a second connecting wall folded toward the sinking platform, the first connecting wall and the second connecting wall are not directly connected, and a plurality of positioning holes are respectively provided on the first connecting wall and the second connecting wall, the outer wall surface of the first connecting wall is aligned with the outer edge of the folded edge of the top plate, and the outer wall surface of the second connecting wall is aligned with the outer edge of the folded edge of the side plate.

[0019] In some of the embodiments, the top plate, the two side plates and the two R-angle plates are integrally formed.

[0020] The utility model also provides a refrigerator, which comprises the above-mentioned refrigerator U-shaped shell.

[0021] Based on the above technical scheme, the U-shaped shell and the refrigerator in the embodiment of the utility model can eliminate the welding and grinding operations of the folded edge seams at the corners of the U-shaped shell in the prior art, and optimize the welding and grinding process to the installation process of the corner parts, thereby avoiding the possible scratches and bruises caused by product turnover during welding and grinding, optimizing the U-shaped shell production process and reducing the production cost, speeding up the production rhythm and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 It is a front view schematic diagram of the U-shaped shell of the refrigerator of the present invention;

[0024] Figure 2 for Figure 1 A magnified view of the structure at center;

[0025] Figure 3 for Figure 2 Schematic diagram without showing corner pieces;

[0026] Figure 4 It is a schematic diagram of the back side of the U-shaped shell of the refrigerator of the present invention;

[0027] Figure 5 for Figure 4 A magnified view of the structure at B in the middle;

[0028] Figure 6 for Figure 5 Schematic diagram without showing corner pieces;

[0029] Figure 7It is a front view schematic diagram of the corner piece of the first embodiment of the utility model;

[0030] Figure 8 This is a schematic diagram of the back side of the corner piece of the first embodiment of the present invention;

[0031] Fig. 9 It is a structural cross-sectional view of the corner piece at the clamping point of the first embodiment of the present utility model;

[0032] Fig.10 It is a front view of the corner piece of the second embodiment of the present utility model;

[0033] Fig.11 This is a schematic diagram of the back side of the corner piece of the second embodiment of the present utility model;

[0034] Fig.12 This is a schematic structural diagram of the metal shell of the corner piece of the second embodiment of the present utility model;

[0035] Fig.13 The first structural diagram of the installation body of the corner piece of the second embodiment of the utility model;

[0036] Fig.14 This is a second structural diagram of the installation body of the corner piece of the second embodiment of the present utility model;

[0037] Fig.15 The utility model is a production flow chart of the U-shaped shell of the refrigerator.

[0038] In the figure: 1. top plate; 11. top plate folded edge; 12. first receiving platform; 13. socket; 2. side plate; 21. side plate folded edge; 22. second receiving platform; 3. R angle plate; 30. mounting opening; 4. corner piece; 41. clamping column; 42. clamping tongue; 43. first joint surface; 44. second joint surface; 45. clamping plate; 46. outer edge wall; 47. sinking platform; 48. first side wall; 49. second side wall; 51. metal shell; 52. mounting body; 511. first positioning opening; 512. second positioning opening; 513. first connecting wall; 514. second connecting wall; 515. positioning hole. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "top", "bottom", "inside", "outside", "front", "back", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Embodiment 1:

[0044] refer to Figure 1-Figure 9 As shown, the utility model provides a U-shaped shell of a refrigerator, which includes two side panels 2 arranged opposite to each other and a top panel 1 located between the two side panels 2. Usually, the side panels 2 are arranged vertically, and the top panel 1 is arranged horizontally and connected between the top ends of the two side panels 2; further, the top panel 1 is smoothly transitioned and connected to the two side panels 2 through two R angle panels 3. Both side panels 2 are provided with side panel folds 21 folded inwardly, and the top panel 1 is provided with a top panel fold 11 folded inwardly; usually, the appearance surface of the side panel fold 21 is 90 degrees to the board surface of the side panel 2, and the appearance surface of the top panel fold 11 is 90 degrees to the board surface of the top panel 1, and the appearance surface of the side panel fold 21 is coplanar with the appearance surface of the top panel fold 11; it can be understood that the side panel fold 21 and the top panel fold 11 are both located within the outer contour of the U-shaped shell, and the appearance surface of the side panel fold 21 and the appearance surface of the top panel fold 11 are located on the front of the U-shaped shell. Those skilled in the art can understand that the front of the U-shaped shell is the sealing surface between the U-shaped shell and the door seal on the door body in the future. An installation opening 30 is formed between the top plate folding edge 11 and the side plate folding edge 21 near each R angle plate 3.

[0045] The U-shaped shell also includes two corner pieces 4 respectively arranged at two installation openings 30. The two ends of each corner piece 4 are respectively connected to the top plate folding edge 11 and the side plate folding edge 21 at the installation opening 30 where it is located, thereby achieving the shielding of the installation opening 30 and the installation between the corner piece 4 and the top plate 1 and the side plate 2, so that the top plate folding edge 11 and the side plate folding edge 21 are connected together. The outer edge wall 46 of the corner piece 4 is connected to the outer wall of the R angle plate 3, that is, the outer arc surface; the appearance surface of the corner piece 4 is located on the front of the U-shaped shell, and the appearance surface of the corner piece 4, the appearance surface of the top plate folding edge 11 and the appearance surface of the side plate folding edge 21 are flush.

[0046] The above-mentioned schematic embodiment eliminates the welding and grinding operations of the folding seams at the corners of the U-shaped shell in the prior art by setting the installation opening 30 and the corner piece 4, and optimizes the welding and grinding process to the installation process of the corner piece 4, thereby optimizing the production process and reducing the production cost, speeding up the production cycle, improving the production efficiency, and avoiding the possible scratches and bumps during the product turnover during welding and grinding.

[0047] refer to Figure 1-Figure 9 As shown, in some embodiments, the top plate folding edge 11 is provided with a first receiving platform 12 facing the installation opening 30 at one end close to each installation opening 30, and the surface of the first receiving platform 12 is lower than the appearance surface of the top plate folding edge 11. Each side plate folding edge 21 is provided with a second receiving platform 22 facing the installation opening 30 at one end close to the installation opening 30, and the surface of the second receiving platform 22 is lower than the appearance surface of the side plate folding edge 21. The first receiving platform 12 and the second receiving platform 22 are both provided with a plug hole 13, and it can be understood that the opening direction of the plug hole 13 is perpendicular to the surface of the first receiving platform 12 and the second receiving platform 22. The back of the corner piece 4 is provided with two clamping columns 41 adapted to the two plug holes 13, and the two clamping columns 41 are clamped in the two plug holes 13 one by one, thereby realizing the installation connection between the corner piece 4 and the top plate folding edge 11 and the side plate folding edge 21, and the connection is more convenient and quick, thereby realizing the rapid production and assembly of the U-shaped shell.

[0048] refer to Figure 3 , Figure 6-Figure 9As shown, in some embodiments, the plug hole 13 is an oblong hole, and accordingly, the clamping column 41 is an oblong convex column structure adapted to the plug hole 13; it is understood that the clamping column 41 can be provided with multiple deformation grooves along its length direction, so as to facilitate the insertion of the clamping column 41 into the plug hole 13. Each clamping column 41 is provided with a protruding tongue 42 on one side in the width direction protruding from the plug hole 13, and it is understood that the two clamping tongues 42 are respectively pressed with the first receiving platform 12 and the second receiving platform 22; through the provision of the clamping tongue 42, the clamping column 41 can be reliably clamped with the plug hole 13 after being inserted into the plug hole 13 to avoid loosening. The long side direction of the plug hole 13 on the first receiving platform 12 is perpendicular to the long side direction of the plug hole 13 on the second receiving platform 22; thereby preventing the corner piece 4 from relative movement or rotation after installation, and ensuring the stability of the installation state of the corner piece 4.

[0049] refer to Figure 8 , Fig. 9 As shown, in some embodiments, an arc-shaped clamping plate 45 is convexly provided on the back side of the corner piece 4, and the outer wall of the clamping plate 45 is in contact with the inner wall of the R angle plate 3; thereby, through the setting of the clamping plate 45, the assembly state between the corner piece 4 and the R angle plate 3 is limited, further ensuring the stability of the installation state of the corner piece 4, and also ensuring that the outer edge wall 46 of the corner piece 4 and the outer wall of the R angle plate 3 are reliably connected.

[0050] refer to Figure 5 , Figure 7 , Fig. 9 As shown, in some embodiments, a sink 47 is provided on the inner side of the corner piece 4 away from the R angle plate 3, and the surface of the sink 47 is lower than the appearance surface of the corner piece 4; the sink 47 is connected to the appearance surface of the corner piece 4 through the first side wall 48 and the second side wall 49; thereby, the structural strength of the corner piece 4 itself can be enhanced. The outer wall surface of the first side wall 48 is aligned with the outer edge of the top plate folding edge 11, and the outer wall surface of the second side wall 49 is aligned with the outer edge of the side plate folding edge 21; thereby, the overall aesthetics of the U-shaped shell is taken into account.

[0051] refer to Figure 2 , Figure 7 , Fig. 9 As shown, in some embodiments, the side surface of the corner piece 4 close to the top plate folded edge 11 is a first splicing surface 43, and the first splicing surface 43 is in contact with the end surface of the top plate folded edge 11 close to the installation opening 30; the side surface of the corner piece 4 close to the side folded plate is a second splicing surface 44, and the second splicing surface 44 is in contact with the end surface of the side plate folded edge 21 close to the installation opening 30; thereby, the corner piece 4 can reliably close the installation opening 30, so that the appearance surface of the corner piece 4, the appearance surface of the top plate folded edge 11 and the appearance surface of the side plate folded edge 21 together form a complete U-shaped shell appearance surface, so that the U-shaped shell of the refrigerator can be reliably sealed with the door seal on the refrigerator door body in the future to prevent cold air in the cabinet from leaking out.

[0052] In some embodiments, the corner piece 4 is made of metal pre-coated plate, thereby eliminating the powder spraying process after welding and grinding in the prior art, further improving the production efficiency of the U-shaped shell and reducing its production cost.

[0053] In some embodiments, the top plate 1, the two side plates 2 and the two R-angle plates 3 are integrally formed parts, that is, they are integrally formed by U-bending the steel plates.

[0054] The utility model also provides a refrigerator, which comprises the above-mentioned refrigerator U-shaped shell.

[0055] Embodiment 2:

[0056] On the basis of the first embodiment, the structure of the corner piece is further improved to optimize the production process of the corner piece and reduce the production cost of the corner piece.

[0057] refer to Figure 10-Figure 14 As shown, in some embodiments, the corner piece 4 includes a metal shell 51 and a mounting body 52 located inside the metal shell 51. The appearance surface of the metal shell 51 is flush with the appearance surface of the top plate folding edge 11 and the appearance surface of the side plate folding edge 21, and the outer edge wall of the metal shell 51 is connected to the outer wall of the R angle plate 3, that is, the outer edge wall of the metal shell 51 is the outer edge wall 46 of the corner piece 4. The clamping column 41, the clamping plate 45, and the sink 47 are all located on the mounting body 52. ​​The metal shell 51 is made of metal pre-coated plate; the mounting body 52 is made of plastic material and is integrated with the metal shell 51 through rubber-coated injection molding. Therefore, through the material setting of the metal shell 51 and the mounting body 52 and the rubber-coated injection molding structural design, the production cost of the corner piece 4 is further reduced on the basis of eliminating the powder spraying process after welding and grinding in the prior art.

[0058] refer to Figure 10-Figure 14As shown, in some embodiments, at least one first positioning opening 511 is respectively provided on the metal shell 51 at the end near the top plate folding edge 11 and the side plate folding edge 21; specifically, the first positioning opening 511 may be in the shape of a door, and its inner end may be provided with a reinforcing rib plate obliquely inward. A plurality of second positioning openings 512 are spaced apart on the outer edge wall 46 of the metal shell 51 at the end near the R angle plate 3; specifically, the second positioning opening 512 may be in the shape of a door. The metal shell 51 includes a first connecting wall 513 and a second connecting wall 514 folded toward the sink 47, and the first connecting wall 513 and the second connecting wall 514 are not directly connected; a plurality of positioning holes 515 are respectively provided on the first connecting wall 513 and the second connecting wall 514; the outer wall surface of the first connecting wall 513 is aligned with the outer edge of the top plate folding edge 11, and the outer wall surface of the second connecting wall 514 is aligned with the outer edge of the side plate folding edge 21. The mounting body 52 is positioned with the metal shell 51 during overmolding through the first positioning port 511, the second positioning port 512, the first connecting wall 513, the second connecting wall 514 and the positioning hole 515; thereby, the bonding strength between the mounting body 52 and the metal shell 51 can be enhanced to avoid misalignment or looseness between the two.

[0059] Combination Figure 1-Figure 15 , briefly describe the main production process of the U-shaped shell of the refrigerator of the utility model:

[0060] S1. Loading: Load the raw material steel plates that meet the size specification requirements through the automatic loading machine;

[0061] S2, punching: punching the raw material steel plate by a punching machine, including: punching out the insertion hole 13, punching out the notch required for the installation port 30, punching out the first receiving platform 12 and the second receiving platform 22, etc.;

[0062] S3, flip: flip the punched steel plate 180 degrees;

[0063] S4, rolling: rolling the turned steel plate by a rolling mill, so as to roll the steel plates on both sides of the notch inward to form the appearance of the top plate folding edge 11 and the side plate folding edge 21;

[0064] S5, ZL bending: The top plate folding edge 11 and the side plate folding edge 21 are finally formed by a ZL bending machine;

[0065] S6, U-shaped bending: The steel plate is bent into a U-shape by a U-shaped bending machine, and a mounting opening 30 is formed between the top plate folding edge 11 and the two side plate folding edges 21;

[0066] S7, installation of the corner piece 4: clamping the corner piece 4 on the first receiving platform 12 and the second receiving platform 22 at the installation opening 30, completing the production and assembly of the U-shaped shell of the refrigerator;

[0067] S8, unloading: convey the U-shaped shell of the freezer off the line.

[0068] To sum up, the U-shaped shell and the refrigerator of the utility model can eliminate the welding and grinding operations of the folding seams at the corners of the U-shaped shell in the prior art, and optimize the welding and grinding process to the installation process of the corner parts, thereby avoiding the possible scratches and bruises caused by product turnover during welding and grinding, and realizing the optimization of the U-shaped shell production process and the reduction of production costs, thereby accelerating the production rhythm and improving production efficiency.

[0069] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0070] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. A U-shaped housing of a refrigerator, characterized in that: include: Two side panels arranged opposite to each other, each of the side panels being provided with a side panel folding edge folded inwards; A top plate is located between the two side plates, and the top plate is smoothly connected to the two side plates through two R angle plates respectively; the top plate is provided with an inwardly folded top plate edge; a mounting opening is formed between the top plate edge near each R angle plate and the side plate edge; Two corner pieces are respectively arranged at the two installation openings; the two ends of each corner piece are respectively connected to the top plate folded edge and the side plate folded edge at the installation opening where it is located, the outer edge wall of the corner piece is smoothly connected to the outer wall of the R angle plate, and the appearance surface of the corner piece, the appearance surface of the top plate folded edge and the appearance surface of the side plate folded edge are flush.

2. The U-shaped housing of the refrigerator according to claim 1, characterized in that: A first receiving platform facing the mounting opening is protruded from one end of the top plate folded edge close to the mounting opening, and the surface of the first receiving platform is lower than the appearance surface of the top plate folded edge; a second receiving platform facing the mounting opening is protruded from one end of the side plate folded edge close to the mounting opening, and the surface of the second receiving platform is lower than the appearance surface of the side plate folded edge; sockets are provided through the first receiving platform and the second receiving platform; two clamping columns matching the two sockets are protruded from the back of the corner piece, so that the corner piece can be clamped on the first receiving platform and the second receiving platform.

3. The U-shaped housing of the refrigerator according to claim 2, characterized in that: The socket is a long and flat hole, and the long side direction of the socket on the first supporting platform is perpendicular to the long side direction of the socket on the second supporting platform; the clamping column is a long and flat convex column adapted to the socket, and a clamping tongue is protruding from one side of the clamping column in the width direction outside the socket to enable the clamping column to be clamped with the socket.

4. The U-shaped housing of the refrigerator according to claim 3, characterized in that: An arc-shaped clamping plate is convexly provided on the back side of the corner piece, and the outer wall of the clamping plate is in contact with the inner wall of the R angle plate.

5. The U-shaped housing of the refrigerator according to claim 4, characterized in that: A sunken platform is provided on the inner side of the corner piece away from the R angle plate, and the surface of the sunken platform is lower than the appearance surface of the corner piece; the sunken platform is connected to the appearance surface of the corner piece through a first side wall and a second side wall; the outer wall surface of the first side wall is aligned with the outer edge of the folded edge of the top plate, and the outer wall surface of the second side wall is aligned with the outer edge of the folded edge of the side plate.

6. The U-shaped housing of the refrigerator according to claim 5, characterized in that: The corner piece is made from a metal pre-coated plate.

7. The U-shaped housing of the refrigerator according to claim 5, characterized in that: The corner piece includes a metal shell and a mounting body located inside the metal shell; the appearance surface of the metal shell is flush with the appearance surface of the top plate folding edge and the appearance surface of the side plate folding edge, and the outer edge wall of the metal shell is smoothly connected to the outer wall of the R angle plate; the metal shell is made of metal pre-coated plate, and the mounting body is made of plastic material, and is integrated with the metal shell through plastic injection molding.

8. The U-shaped housing of the refrigerator according to claim 7, characterized in that: At least one first positioning opening is respectively provided on one end of the metal shell near the folded edge of the top plate and the folded edge of the side plate; a plurality of second positioning openings are spaced apart on one end of the outer edge wall of the metal shell near the R angle plate; the metal shell comprises a first connecting wall and a second connecting wall folded toward the sinking platform, the first connecting wall and the second connecting wall are not directly connected, a plurality of positioning holes are respectively provided on the first connecting wall and the second connecting wall, the outer wall surface of the first connecting wall is aligned with the outer edge of the folded edge of the top plate, and the outer wall surface of the second connecting wall is aligned with the outer edge of the folded edge of the side plate.

9. The U-shaped housing of the refrigerator according to claim 1, characterized in that: The top plate, two side plates and two R angle plates are integrally formed parts.

10. A refrigerator, characterized in that: A refrigerator U-shaped shell comprising any one of claims 1-9.

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