JPWO2018179124A1 - Manufacturing method of rear panel of refrigerator and rear panel of refrigerator - Google Patents

Abstract

A back panel disposed on the back of the refrigerator body, a machine room disposed on the bottom of the refrigerator body, and a machine room cover disposed on the back of the machine room. The rear panel of the refrigerator has a shape in which the flat surface portion located on the back surface and the side surface portion located on the side surface intersect at right angles, and the corner portion of the machine room cover has a chamfered shape. It is a manufacturing method. This manufacturing method includes a step of forming a notch on the upper end side of the portion to be drawn in the side surface portion of the back panel. In addition, after forming the notch, the back panel is drawn on the lower part located on the machine room cover side, and the corner of the back panel is shaped into the machine room cover at the part where the back panel continues to the machine room cover. The drawing process is adapted to match the shape of the corners.

Description

  The present invention relates to a method for manufacturing a rear panel of a refrigerator and a rear panel of the refrigerator.

  Conventionally, a machine room is arranged at the lowermost part of the back of the refrigerator. Since the machine room is equipped with a compressor, it is necessary to have a structure that releases heat generated by the compressor to the outside of the refrigerator. Even when the back of the refrigerator is installed in contact with the wall, the machine room cover is often formed with a chamfered corner instead of a flat shape in order to allow air to pass through the back.

  On the other hand, in order to ensure heat insulation by urethane, the corner portion of the back panel is preferably not a chamfered shape but a structure composed of side surfaces bent at right angles to a flat surface. However, in this case, the corner portion of the back panel is made not chamfered, while the corner portion of the machine room cover is chamfered, so the shape of the corner portion of the back panel and the corner portion of the machine room cover is different. It will be. Therefore, in order to match the shape of the joint between the back panel and the machine room cover, it is necessary to squeeze the bottom of the back panel.

  As a result, when the back panel is molded, two operations of bending the side surface and the lower diaphragm are performed, and therefore, a surplus is generated in the side surface of the back panel and wrinkles. When injecting urethane from the urethane inlet of the rear panel after combining the outer box, rear panel, bottom panel, inner box, etc. in the manufacturing process of the refrigerator, if wrinkles occur on the rear panel, the urethane from the gap due to the wrinkles There is a problem that the heat insulation is reduced due to leakage. Further, there is a problem that the appearance of the back panel is damaged by wrinkles. Therefore, as a method for suppressing the generation of wrinkles in the back panel, Patent Document 1 and Patent Document 2 describe a method in which a notch shape is put in advance in a portion that becomes a surplus of the panel material during molding.

  Patent Document 1 describes a panel manufacturing method in which a blank material is drawn into a predetermined shape with a molding die to form a panel. In the manufacturing method of Patent Document 1, in a square blank made of a plated steel plate, a square drawing forming region in the center of the blank material and four rectangular drawing bead forming regions that surround the square and extend along each side. Mold. At that time, a notch extending from the outer peripheral end toward the drawn bead forming region is formed between the outer peripheral end of the blank material and the drawn bead forming region. The notch portion is constituted by two side wall portions that are separated from each other in a direction orthogonal to the extending direction, and a bottom portion on an arc that is connected to each of the two side wall portions.

  In the manufacturing method of the door outer surface plate of the refrigerator of patent document 2, the to-be-molded product which cut the four corners of the rectangular coated steel plate into a predetermined shape is press-molded into a box shape with a molding die. By this press molding, a rectangular door front surface located at the center of the molded product, four side surfaces bent substantially at right angles to the front surface of the door, and corner surfaces of four corner notches are integrally provided. The article to be molded is molded. The corner surface is a surface having arc-shaped end surfaces left between the side surfaces when the four corners of the molded product are cut out.

Japanese Patent Laying-Open No. 2015-77627 JP-A-8-117881

  However, when the notch shape shown in Patent Document 1 is provided on the back panel, there is a problem that the two side walls overlap during drawing, the height of the side walls deviates, and urethane leaks easily. . Moreover, since the notch shape shown by patent document 2 is a notch of the corner part at the time of bending two side surfaces at right angles with respect to the door front, the back of the refrigerator which needs to put a notch in the middle of a side surface Not applicable to panels.

  The present invention has been made in order to solve the above-described problems. A wrinkle is not generated even when drawing is performed, and urethane leakage can be suppressed. It aims to provide a back panel.

  The manufacturing method of the back panel of the refrigerator according to the present invention includes a back panel disposed on the back surface of the refrigerator body, a machine room disposed on the bottom of the refrigerator body, and a machine disposed on the back surface of the machine room. And a corner portion of the back panel has a shape in which a flat surface portion located on the back surface of the refrigerator main body and a side surface portion located on the side surface intersect at a right angle, and the corner of the machine room cover The part is a method for manufacturing a rear panel of a refrigerator having a chamfered shape, and performs drawing at a lower portion of the rear panel located on the machine room cover side, and the rear panel is In a portion adjacent to the machine room cover, a drawing step for matching the shape of the corner portion of the back panel with the shape of the corner portion of the machine room cover, and before the drawing step, In serial side portion, the upper end of the portion where the drawing is performed, in which a step of forming a notch.

  The back panel of the refrigerator according to the present invention is a machine room cover provided on the back of the machine room disposed on the back of the refrigerator main body, and has a shape in which the machine room cover corner is chamfered. A rear panel of a refrigerator that is continuous with the machine room cover, and includes a part having a shape bent at a right angle and a part having a chamfered shape similar to the shape of the machine room cover corner part. Before forming the back panel corner portion, and after forming the back panel corner portion, a pair of surfaces constituting the cross-sectional triangle face each other. It has a notch.

  According to the manufacturing method of the back panel of the refrigerator and the back panel according to the present invention, in the side surface portion of the back panel, the upper end side of the portion to be drawn, that is, the surplus is generated when the back panel is formed. A cutout is formed in the portion. Therefore, a space for wrinkles to escape is created, and the generation of wrinkles can be suppressed. In addition, since no gap due to wrinkles occurs on the back panel, urethane leakage is less likely to occur. Furthermore, a wrinkle-free appearance can be obtained on the back panel.

It is a perspective view of the front of the refrigerator which concerns on embodiment of this invention. It is a perspective view of the back of the refrigerator which concerns on embodiment of this invention. It is a figure which shows typically the cross section of the machine room of the refrigerator which concerns on embodiment of this invention. It is a figure which shows typically the cross section of the matching part of the outer case and back panel of the refrigerator which concerns on embodiment of this invention. It is a figure of the comparative example which a wrinkle generate | occur | produces in the back panel of a refrigerator. It is a figure which shows typically the cross section of the matching part of the outer case and back panel of the refrigerator of a comparative example. It is a top view which shows the back panel before the assembly of the refrigerator which concerns on embodiment of this invention. It is a side view of the refrigerator which concerns on this invention. It is a figure which expands and shows the back panel notch of the refrigerator which concerns on embodiment of this invention. It is a perspective view which shows the resin cover which concerns on embodiment of this invention from the front side. It is a perspective view which shows the resin cover which concerns on embodiment of this invention from the back side. It is a perspective view which shows the lower part of the refrigerator which concerns on embodiment of this invention.

  Below, an embodiment of a manufacturing method of the back panel of a refrigerator in the present invention is described in detail based on a drawing. The present invention is not limited to the embodiments described below. In the following drawings, the size of each component may be different from that of an actual apparatus.

Embodiment.
FIG. 1 is a front perspective view of a refrigerator according to an embodiment of the present invention. FIG. 2 is a rear perspective view of the refrigerator according to the embodiment of the present invention. FIG. 3 is a diagram schematically showing a cross section of the machine room of the refrigerator according to the embodiment of the present invention. FIG. 3 schematically shows a cross section when the refrigerator is viewed from above by cutting at the position of line AA in FIG. 2. The inside of the main body 1 of the refrigerator 100 is divided into a plurality of storage rooms, and the temperature zone of each storage room differs depending on the food to be stored and the application. The uppermost storage chamber is the refrigerator compartment 2, the lower storage compartment of the refrigerator compartment 2 is the vegetable compartment 3, and the lower storage compartment of the vegetable compartment 3 is the freezer compartment 4. A refrigerating room rotary door 5 is disposed in front of the refrigerating room 2, a vegetable room drawer door 6 is disposed in front of the vegetable room 3, and a freezing room drawer door 7 is disposed in front of the freezer room 4. ing. The box body of the main body 1 is covered with an outer box 8 whose top surface and side surfaces are integrated, a back panel 9 disposed on the back surface, and a bottom panel 10 disposed on the bottom surface. The shape corresponding to the refrigerator compartment 2, the vegetable compartment 3, and the freezer compartment 4 in the store | warehouse | chamber of the main body 1 is formed of the inner box 11 shown in FIG. A urethane 12 is filled between the outer box 8 and the inner box 11. In FIG. 3, the outer box 8 and the inner box 11 are indicated by line segments.

  As shown in FIG. 2, the back panel 9 has a flat surface portion 14 and a side surface portion 15L. The side surface portion 15L is located at the left end of the flat surface portion 14 when the refrigerator 100 is viewed from the back. The corner portion 13L at the left end of the back panel 9 has a shape in which the plane portion 14 and the side surface portion 15L intersect at a right angle. In addition, the side part similar to the side part 15L is located also in the right end part of the plane part 14 when the refrigerator 100 is seen from the back. In the right end portion of the back panel 9, a corner portion similar to the corner portion 13L is formed by the flat portion 14 and the right side surface portion. At the center in the vertical direction of the back panel 9, urethane inlets 16L and 16R are provided at both ends in the horizontal direction. Three beads 17 for preventing deformation at the time of urethane injection are provided at the center in the left-right direction of the back panel 9. The three beads 17 extend in the vertical direction in parallel. A handle 18 is provided at the right end of the upper end portion of the back panel 9. The handle 18 is used when moving the refrigerator. In the center of the upper end portion of the back panel 9, a control board storage portion 19 is disposed. The control board storage unit 19 is protected by a control board cover 20.

  A machine room 22 is disposed at the bottom of the back of the main body 1 of the refrigerator 100, that is, at the bottom. The machine room 22 is disposed on the bottom panel 10. As shown in FIG. 3, the machine room 22 is equipped with a compressor 21 and a fan 25 for cooling the compressor 21. The rear surface of the machine room 22 is covered with a machine room cover 23 as shown in FIGS. A plurality of ventilation holes 24, a suction port 24A, and a blower outlet 24B are formed in the machine room cover 23. The heat generated by the compressor 21 is discharged to the outside of the machine room 22 through the plurality of ventilation holes 24. Further, by operating the fan 25, as indicated by an arrow in FIG. 3, external air is sucked from the suction port 24A, and the compressor 21 is cooled by the sucked air, and then the air is blown from the air outlet 24B. It is discharged outside.

  The machine room cover 23 is not a planar shape, and the left and right corner portions 27L and 27R are chamfered. In the present embodiment, the corner portions 27L and 27R are inclined at an angle of 25 degrees with respect to the surface on which the ventilation hole 24 is formed. The corners 27L and 24R of the machine room cover 23 are chamfered so that the air flow described above is generated in the machine room 22 even when the refrigerator 100 is installed with the back surface in contact with the wall. Can do.

  The corner portion 13L of the back panel 9 is not chamfered to ensure heat insulation by the urethane 12, while the corner portion 27L of the machine room cover 23 is chamfered to form an air path. As shown in FIG. 2, the shape of the lower portion of the back panel 9 is narrowed in the left-right direction as it approaches the machine room cover 23, and a joint portion 28 that is a portion adjacent to the machine room cover 23 in the back panel 9. Is matched with the shape of the machine room cover 23.

  FIG. 4 is a diagram schematically showing a cross section of the mating portion between the outer box and the back panel of the refrigerator according to the embodiment of the present invention. FIG. 4 shows the mating portion 32L of the outer case 8 and the rear panel 9 of the refrigerator 100 located on the left side when the refrigerator 100 is viewed from the back as shown in FIG. 2 at the position of line BB in FIG. And the cross section when it sees from the bottom face side is shown typically. In FIG. 4, the outer box 8 and the inner box 11 are indicated by line segments. The side surface portion of the outer box 8 is bent at three locations of the first bent portion 8A, the second bent portion 8B, and the third bent portion 8C. An end portion 15A of the side surface portion 15 of the back panel 9 is inserted into a recess formed by the first bent portion 8A and the second bent portion 8B of the outer box 8. In other words, the outer box 8 and the back panel 9 are joined together so as to sandwich the side surface portion 15 </ b> L of the back panel 9 between the side surfaces of the outer box 8. In addition, the matching part of the outer case 8 and the back panel 9 of the refrigerator 100 located on the right side when the refrigerator 100 is viewed from the back has the same configuration as the matching part 32L.

  FIG. 5 is a diagram of a comparative example in which wrinkles occur on the rear panel of the refrigerator. FIG. 6 is a diagram schematically showing a cross section of the mating portion between the outer case and the back panel of the refrigerator of the comparative example. FIG. 6 schematically shows a cross section when the mating portion 32 of the outer box 8 of the refrigerator and the back panel 9 is cut at the position of line CC in FIG. 5 and enlarged from the bottom side. When the back panel 9 described above is formed, the panel material is arranged in the direction of the arrow shown in FIG. 5 in the direction of the arrow shown in FIG. Concentrate on the top position. As a result, surplus meat is generated and wrinkles 31 are formed. The panel material may swell on either the outer side or the inner side, forming a wrinkle 31 that undulates. In the perspective view of FIG. 2, the position of the wrinkle 31 generated in this way is shown surrounded by a dotted circle.

  In the manufacturing process of the refrigerator, after combining the outer box 8, the back panel 9, the bottom panel 10, and the inner box 11, the urethane 12 is injected from the urethane inlets 16L and 16R of the back panel 9 shown in FIG. There is a process. As shown in FIG. 4, the urethane 12 does not leak if the outer box 8 and the rear panel 9 are properly aligned. However, as shown in FIG. 6, when wrinkles 31 are generated on the back panel 9, a gap 33 is formed which is floated by the wrinkles 31. The urethane 12 flows from the gap 33 in the direction indicated by the arrow in FIG. 6 and leaks to the outside. As a result, there arises a problem that not only the heat insulation effect is lowered but also the appearance is impaired by the wrinkles 31.

  FIG. 7 is a plan view showing the back panel before assembling the refrigerator according to the embodiment of the present invention from the back side of the refrigerator. In the rear panel 9 before assembly, the left end portion as viewed from the back of the refrigerator 100 has a region that becomes the left side portion 15L after assembly, and the right end portion has a region that becomes the right side portion 15R after assembly. . In FIG. 7, the portions that become the corner portions 13 </ b> L and 13 </ b> R and the portions that become the narrowed portion 29 after assembly are indicated by dotted lines.

  A notch 35L is formed in a region that becomes the left side portion 15L after assembly, and a notch 35R is formed in a region that becomes the right side portion 15R after assembly. The cutout 35L has a surface 36L extending along the short side direction of the back panel 9 and a surface 37L inclined with respect to the short side direction, and has a triangular cross-sectional shape. In the notch 35L, the portion where the surface 36L and the surface 37L intersect is the apex of the triangle in the cross-sectional shape. The portion where the surface 37L intersects the left side edge of the back panel 9 is located below the portion where the surface 36L intersects the left side edge of the back panel 9 in the vertical direction of the back panel 9. The portion where the surface 36L and the surface 37L intersect, that is, the portion corresponding to the apex of the triangle of the cross-sectional shape is located at the same position in the vertical direction of the back panel 9 as the portion where the surface 36L intersects the left edge of the back panel 9 is doing. The notch 35R has a surface 36R and a surface 37R, and has the same configuration as the notch 35L. The surface 36R corresponds to the surface 36L, and the surface 37R corresponds to the surface 37L.

  The notch 35L is formed so that the apex of the triangle, that is, the portion where the surface 36L and the surface 37L intersect is located at the same position as the portion where the corner portion 13L and the aperture portion 29 intersect in the longitudinal direction of the back panel 9. ing. Similarly, in the cutout 35R, the apex of the triangle, that is, the portion where the surface 36R and the surface 37R intersect is located at the same position as the portion where the corner portion 13R and the aperture portion 29 intersect in the longitudinal direction of the back panel 9. Formed. In other words, the notches 35L and 35R are formed so as to be positioned on the upper end side of the portion of the rear panel 9 where the drawing is performed. In the present embodiment, a step of forming the notch 35L and the notch 35R is performed before the step of drawing the back panel 9 described later.

  FIG. 8 is a side view of the refrigerator according to the present invention. FIG. 9 is an enlarged view showing the rear panel cutout of the refrigerator according to the embodiment of the present invention. FIG. 9 shows an enlarged view of the cutout 35L after assembly. As described above, in the cutout 35L of the back panel 9 before assembly, the portion where the surface 37L intersects the left side edge of the back panel 9 is more than the portion where the surface 36L intersects the left side edge of the back panel 9 It is located on the lower side in the vertical direction of the back panel 9. Similarly, in the cutout 35R, the portion where the surface 37R intersects the right edge of the back panel 9 is lower in the vertical direction of the back panel 9 than the portion where the surface 36R intersects the right edge of the back panel 9. Is located. When the rear panel 9 is assembled, when the corner portions 13L and 13R and the diaphragm portion 29 are bent, the portion where the surface 37L intersects the left end of the rear panel 9 is upward so that the surface 37L faces the surface 36L. And the portion where the surface 37R intersects the right end of the back panel 9 is moved upward so that the surface 37R faces the surface 36R. As a result, the notches 35L and 35R form an edge shape as shown in FIG.

  As described above, according to the present embodiment, in the manufacturing process of the back panel 9, the drawing part 29 is formed in the lower part of the back panel 9 positioned on the machine chamber cover 23 side to form the drawn part 29, and the back panel 9 is a drawing step for matching the joint portion 28, which is a portion adjacent to the machine room cover 23, with the shape of the machine room cover 23, and a notch 35 </ b> L is formed on the left edge of the back panel 9, and a notch 35 </ b> R is formed on the right edge. A notch forming step of forming The notch forming process is performed before the drawing process. Accordingly, when the drawing process is performed, a space for the wrinkles 31 to escape is created, and the occurrence of the wrinkles 31 on the back panel 9 can be suppressed. Further, since the gap 33 shown in FIG. 6 due to the wrinkles 31 does not occur in the back panel 9, it is difficult for the urethane 12 to leak to the outside. Furthermore, an appearance free from wrinkles 31 can be obtained on the back panel 9.

  As shown in FIG. 9, in the back panel 9, a circular insertion hole 39 is formed above the surface 36 </ b> L and in the vicinity of the left end portion of the back panel 9. In the back panel 9, a circular insertion hole 40 is formed below the surface 37L and in the vicinity of the portion where the surface 36L and the surface 37L intersect. An insertion hole similar to the insertion hole 39 is formed above the surface 36R and in the vicinity of the side edge of the back panel 9, and below the surface 37R and in the vicinity of the intersection of the surface 36R and the surface 37R. Is formed with the same insertion hole as the insertion hole 40. These insertion holes will be described later.

  FIG. 10 is a perspective view showing the resin cover according to the embodiment of the present invention from the front side. FIG. 11 is a perspective view showing the resin cover according to the embodiment of the present invention from the back side. FIG. 12 is a perspective view showing the lower part of the refrigerator according to the embodiment of the present invention. The resin cover 38 is a rectangular thin plate member. On the back surface of the resin cover 38, wall portions 38 </ b> A are formed at four edge portions constituting the rectangle. Further, on the back surface of the resin cover 38, a tapered protrusion 41 and a protrusion 42 are provided diagonally.

  By inserting the protrusion 41 into the insertion hole 39 of the back panel 9 and inserting the protrusion 42 into the insertion hole 40 of the back panel 9, the resin cover 38 is attached to the cutout 35L. Then, the notch 35L after assembling the back panel 9 forming the thin line-shaped recess shown in FIG. 9 is covered with the resin cover 38. Therefore, by attaching the resin cover 38, the user's hand is prevented from touching the cutout 35L having an edge shape. The resin cover 38 is attached to the notch 35R in the same manner.

  In the present embodiment, a step of attaching the resin cover 38 to the cutouts 35L and 35R of the rear panel 9 is performed before the step of injecting the urethane 12 between the outer box 8 and the inner box 11. This prevents the urethane 12 from leaking from the insertion holes 39 and 40 of the notch 35L and the insertion hole of the notch 35R during urethane injection.

  In addition, the structure of the storage chamber inside the main body 1 of the refrigerator is not limited to the above-described structure. An ice making room and a switching room may be installed in parallel under the uppermost refrigerating room, a freezing room may be installed thereunder, and a vegetable room may be arranged in the lowermost stage. Moreover, the vegetable compartment may be arrange | positioned under the ice making room and the switching room, and the freezer compartment may be arrange | positioned at the lowest stage. Moreover, the two-door refrigerator comprised only with a refrigerator compartment and a freezer compartment may be sufficient.

  DESCRIPTION OF SYMBOLS 1 Main body, 2 refrigerator compartment, 3 vegetable compartment, 4 freezer compartment, 5 refrigerator compartment rotation door, 6 vegetable compartment drawer door, 7 freezer compartment drawer door, 8 outer box, 8A 1st bending part, 8B 2nd bending part, 8C 3rd bent part, 9 back panel, 10 bottom panel, 11 inner box, 12 urethane, 13 corner part, 13L corner part, 13R corner part, 14 plane part, 15 side part, 15A end part, 15L side part, 15R side part Part, 16L urethane inlet, 16R urethane inlet, 17 beads, 18 handle, 19 control board storage part, 20 control board cover, 21 compressor, 22 machine room, 23 machine room cover, 24 vent hole, 24A inlet, 24B outlet, 25 fan, 27 chamfered shape, 27L corner part, 27R corner part, 28 joint part, 29 restricting part, 31 wrinkle, 3 Alignment part, 32L Alignment part, 33 gap, 35L notch, 35R notch, 36L face, 36R face, 37L face, 37R face, 38 resin cover, 38A wall part, 39 insertion hole, 40 insertion hole, 41 protrusion, 42 Protrusion, 100 Refrigerator.

The manufacturing method of the back panel of the refrigerator according to the present invention includes a back panel disposed on the back surface of the refrigerator body, a machine room disposed on the bottom of the refrigerator body, and a machine disposed on the back surface of the machine room. And a corner portion of the back panel has a shape in which a flat surface portion located on the back surface of the refrigerator main body and a side surface portion located on the side surface intersect at a right angle, and the corner of the machine room cover The part is a method for manufacturing a rear panel of a refrigerator having a chamfered shape, and performs drawing at a lower portion of the rear panel located on the machine room cover side, and the rear panel is In a portion adjacent to the machine room cover, a drawing step for matching the shape of the corner portion of the back panel with the shape of the corner portion of the machine room cover, and before the drawing step, In serial side portion, the upper end of the portion where the drawing is applied, attached forming a notch, after the drawing step, the notch on the resin cover before injecting the polyurethane into the refrigerator body An attachment process .

The back panel of the refrigerator according to the present invention is a machine room cover provided on the back of the machine room disposed on the back of the refrigerator main body, and has a shape in which the machine room cover corner is chamfered. A refrigerator rear panel that is continuous with the machine room cover, wherein urethane is injected into the back panel, and has the shape bent at a right angle and the shape of the machine room cover corner part A back panel corner portion including a portion having a chamfered shape, and a triangular cross-sectional shape before forming the back panel corner portion, and a triangular shape having the cross-sectional shape after forming the back panel corner portion And a notch facing the pair of surfaces and a resin cover attached to the notch .

Claims (5)

A back panel disposed on the back of the refrigerator body;
A machine room disposed at the bottom of the refrigerator body;
A machine room cover disposed on the back of the machine room,
The corner portion of the back panel has a shape in which a flat surface portion located on the back surface of the refrigerator main body and a side surface portion located on the side surface intersect at a right angle, and the corner portion of the machine room cover is chamfered. A method for manufacturing a rear panel of a refrigerator having a shaped shape,
In the back panel, drawing is performed at a lower portion located on the machine room cover side, and the shape of the corner portion of the back panel is changed to the shape of the machine room cover in a portion where the back panel is adjacent to the machine room cover. A drawing process to match the shape of the corner,
The manufacturing method of the back panel of a refrigerator including the process of forming a notch in the upper end side of the part by which the said drawing is performed in the said side part of the said back panel before the said drawing process.   The method for manufacturing a rear panel of a refrigerator according to claim 1, wherein a cross-sectional shape of the notch is a triangle.   Furthermore, the manufacturing method of the back panel of the refrigerator of Claim 1 or 2 including the attachment process which attaches a resin cover to the said notch before inject | pouring urethane into the said refrigerator main body after the said throttle process. A machine room cover provided on the back surface of the machine room disposed on the back surface of the refrigerator main body, which is continuous with the machine room cover having a shape in which a corner portion of the machine room cover is chamfered. A rear panel of the refrigerator,
A back panel corner portion including a portion having a shape bent at a right angle and a portion having a chamfered shape similar to the shape of the machine room cover corner portion;
Before forming the back panel corner portion, it has a triangular cross-sectional shape, and after forming the back panel corner portion, a pair of faces forming the cross-sectional shape of the notch facing each other. The rear panel of the refrigerator.   Furthermore, the back panel of the refrigerator of Claim 4 provided with the resin cover attached to the said notch.

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