JP2013002702A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the heat insulating performance of an opening of a refrigerator.SOLUTION: The refrigerator comprises a door and a heat insulation box. The heat insulation box includes a metallic outer box, a resin-made inner box, a resin attachment for sealing a connection part between the outer box and inner box, and a foam insulation material filled in the inner space enclosed with the outer box, the inner box, and the resin attachment. The outer box includes a magnetized surface extending in a width direction and a tip bent in a hook shape from the magnetized surface in a depth direction. The inner box includes a step formed so as to correspond to a step of the door and a projection extending from the step and projecting in the depth direction. The resin attachment includes an L-shaped engagement part engaged with the tip of the outer box and a recessed storage part into which the projection of the inner box is inserted.

Description

  The present invention relates to a refrigerator, and particularly to a structure of a heat insulating box constituting the refrigerator.

  In order to ensure heat insulation performance, a heat insulation box is used in the refrigerator storage room. In recent years, the heat insulation performance of household refrigerators has been dramatically improved by installing a vacuum heat insulating material inside the heat insulation box. Since further higher energy saving performance is required for refrigerators in the market, further improvement of heat insulation performance is desired for the heat insulation box.

The heat insulation box is composed of an outer box and an inner box. A heat loss occurs mainly in a place where a vacuum heat insulating material cannot be installed in the heat insulating box of the refrigerator. For this reason, it becomes a subject to reduce the heat | fever penetration | invasion from the outside to the inside in the opening part of a refrigerator, and the heat conduction in the connection part of the outer box provided in an opening part, and an inner box. Patent document 1 and patent document 2 are inventions related to the improvement of the heat insulation structure in the refrigerator.

Utility Model No. 5-10224 JP 2008-39364 A

  In the heat insulating box of the refrigerator, the connecting portion between the outer box and the inner box has a complicated shape and occupies the entire opening. Since the outer box and the inner box have low rigidity, it is difficult to determine the positions of the outer box and the inner box before the foam insulation is injected. In addition, the outer box and the inner box before injection of the foam heat insulating material cannot support the connecting portion, and the heat insulating box body may be deformed in the manufacturing process. In a product such as a household refrigerator, where there is a need to make the opening thin and widen the opening, it is difficult to secure a dimension that can apply a complicated shape to the opening.

Since various loads are applied to the opening during manufacture or use, the largest stress is generated in this portion. If the connecting portion of the opening is made of only resin, the strength is insufficient and the heat insulating box is deformed. In the case of a rotating refrigerator door, a door fixing part is also installed in the opening. In the opening, the strength against the weight (load) decreases, and the door fixing part may be dropped off.

In order to ensure airtightness between the door and the heat insulating box, a gasket having a magnet embedded therein is disposed in the door. The metallic outer box has a magnetized surface to improve the adhesion between the gasket and the heat insulating box. Even in a home refrigerator where a wide frontage is required, a space for securing a magnetized surface of the gasket is required at the opening.

  The present invention has been made to solve the above-described problems, and aims to improve the heat insulating performance of the opening in a refrigerator having a thin opening.

The refrigerator according to the present application includes a door and a heat insulating box, and the heat insulating box includes a metallic outer box, a resin inner box, a resin attachment that seals a connection portion between the outer box and the inner box, and an outer box. A foam heat insulating material filled in an inner space surrounded by a box, an inner box, and a resin attachment is provided. The outer box has a magnetized surface extending in the frontage direction and a tip portion bent in a bowl shape from the magnetized surface in the depth direction, and the inner box is provided corresponding to the step of the door. And a convex part extending from the step part and projecting in the depth direction, and the resin attachment includes an L-shaped engagement part that engages with the front end part of the outer box. And a concave accommodating portion into which the convex portion of the inner box is inserted.

  According to this invention, the heat insulation performance of the heat insulation box improves while securing the magnetized surface of the gasket. Since the shape of the resin attachment connecting the outer box and the inner box is simple and can be made small, the assemblability is good. The resin attachment can be held in the outer box and the inner box before the foam insulation material is injected, and can also be installed in a refrigerator with a thin opening. Since the outermost surface of the opening of the heat insulating box is formed of a metal outer box, it is possible to ensure strength against stress caused by deformation of the heat insulating box and load due to door installation.

It is a cross-sectional view of the refrigerator according to the present invention. 3 is an enlarged cross-sectional view of the opening of the refrigerator according to Embodiment 1. FIG. It is the schematic which shows the assembly method of the household refrigerator by an automatic machine. It is a figure which shows the relationship between an outer case, the resin attachment, and an inner case at the time of an assembly. They are the longitudinal cross-sectional view (5a) and the cross-sectional view (5b) which show the structure of the reinforcement board provided in the opening part of the refrigerator. It is a cross-sectional enlarged view of the opening part of the refrigerator by Embodiment 2. It is a cross-sectional enlarged view of the opening part of the refrigerator by Embodiment 3. It is a cross-sectional enlarged view of the opening part of the refrigerator by Embodiment 4. It is a cross-sectional enlarged view of the opening part of the refrigerator by Embodiment 5. It is a cross-sectional enlarged view of the opening part of the refrigerator by Embodiment 6. It is a cross-sectional enlarged view of the opening part of the refrigerator by Embodiment 7. FIG. 10 is an enlarged cross-sectional view of an opening of a refrigerator according to an eighth embodiment. It is a cross-sectional enlarged view of the opening part of the refrigerator by Embodiment 9. It is a figure which shows the curved part provided in the opening part by Embodiment 9. FIG.

Embodiment 1 FIG.
FIG. 1 shows a cross-sectional view of a refrigerator according to the present invention. The refrigerator 100 includes a heat insulating box (storage room) 15 having a space inside and a double door 6. The heat insulating box 15 includes a metal outer box 1, a resin inner box 3, a foam heat insulating material 5, and a vacuum heat insulating material 8. The foam heat insulating material 5 is filled between the outer box 1 and the inner box 3 to ensure the heat insulating performance of the heat insulating box 15. Although the vacuum heat insulating material 8 improves the heat insulation performance of the heat insulation box 15, the effect of the present invention is exhibited even if it is not installed. Part A indicates the periphery of the opening 14 of the heat insulating box 15. The outer box 1 is bent in an L shape inwardly at the opening 14, and the end is folded back outward again. In the refrigerator 100, since the opening part 14 is thin, a wide frontage is ensured compared with the width of the refrigerator. The heat insulating box 15 includes an opening 14, a side surface 17, a back surface 18, and an inner surface 19. The refrigerator 100 has a frontage direction and a depth direction. The opening 14 forms a design surface of the heat insulating box 15.

FIG. 2 is an enlarged view of the part A. The door 6 is provided with a gasket 7 including a magnetic body 20 in order to ensure airtightness between the heat insulating box 15 and the door 6. The outer box 1 is composed of a side surface 1a, a magnetized surface 1b, a tip 1c, and a corner 1d. The resin attach 2 includes an engaging portion 2a, an elastic portion 2b, a bottom portion 2c, and an inclined portion 2d. The inner box 3 includes a step portion 3a, a straight portion 3b, a convex portion 3c, and a tip portion 3d. The step portion 3 a corresponds to the step provided on the door 6. The straight line portion 3b connects the step portion 3a and the convex portion 3c.

The resin attach 2 is fitted around the outer case 1 and the corner 1d. The engagement portion 2a bent in an L shape is in contact with and engaged with the front end portion 1c of the outer box whose end is bent in a hook shape. The convex portion 3 c of the inner box 3 is fitted inside the concave accommodating portion (2 a to 2 d) of the resin attach 2. A dew prevention heater 4 is installed on the convex portion 3c of the inner box 3 in order to prevent dew condensation from occurring in the opening due to the cool air of the refrigerator. Since the resin attach 2 is small, it can be installed in a household refrigerator with a thin opening. The front end 3 d of the inner box 3 is in contact with the bottom 2 c of the resin attach 2.

The outer box 1 is provided with a bowl-shaped tip 1c, and the rigidity of the heat insulating box 15 is ensured. The magnetized surface 1b extends from the corner 1d in the frontage direction. When filling the heat insulating box 15 with the foam insulation 5, the front end 1 c of the outer box 1 and the engaging part 2 a of the resin attach 2, the elastic part 2 b of the resin attach 2, and the convex part 3 c of the inner box 3 are Since each is press-contacted, leakage of the foam heat insulating material 5 from between the components of the opening part 14 of the heat insulation box 15 can be prevented.

Consider the heat penetration inside and outside the refrigerator at the opening 14 of the heat insulation box 15. When the double flange structure portion (elastic portion 2b, bottom portion 2c, inclined portion 2d) is made of metal, the high temperature portion penetrates into the heat insulating box due to the high thermal conductivity of the metal. In the present invention, since the resin parts such as the resin attachment 2 having low thermal conductivity are installed inside the heat insulating box, the heat insulating performance is ensured.

A method for assembling a household refrigerator using an automatic machine will be briefly described. FIG. 3 shows a process of joining the outer box 1 and the inner box 3 together. The outer box 1 includes two side plates 21 and a top plate 22. In assembly by an automatic machine giving priority to productivity, it is necessary to delete the fine positioning work. In a state where both side plates 21 are expanded, the outer box 1 and the inner box 3 are positioned, and then the two side plates 21 are closed to connect the outer box 1 and the inner box 3. In this state, the resin attach 2 is held by the outer box 1 and the inner box 3. After this, foam insulation is injected.

FIG. 4 shows the relationship among the outer box 1, the resin attach 2, and the inner box 3 during assembly. First, as shown in the left side view, the resin attach 2 is inserted toward the corner 1d and the magnetized surface 1b of the outer box 1. By this operation, the bottom 2c of the resin attach 2 comes into contact with the side surface 1a (the back side) of the outer box 1. A part of the inclined portion 2 d of the resin attach 2 abuts on the magnetized surface 1 b (the back side) of the outer box 1. The engaging portion 2 a of the resin attach 2 is engaged with the tip portion 1 c of the outer box 1.

Next, the outer box 1 and the inner box 3 are positioned, and the side plate 21 of the outer box 1 is closed as described with reference to FIG. A dew prevention heater 4 is attached to the convex portion 3 c of the inner box 3. With this operation, the housing portions (2a to 2d) of the resin attachment 2 are press-fitted into the convex portions 3c of the inner box 3. Since the elastic portion 2b has a spring property, the mouth 2k of the resin attach 2 is once expanded and then closed. Finally, the elastic portion 2b is in close contact with the convex portion 3c so as to press the convex portion 3c (see the right side view).

  FIG. 5 shows a longitudinal sectional view (5a) and a transverse sectional view (5b) of the opening of the heat insulating box. A door hinge 12 that holds the door 6 is installed on the magnetized surface 1 b of the outer box 1. The resin attach 2 is interrupted in the middle, and the door hinge 12 is disposed in the interrupted portion. On the back side of the door hinge 12, a metal L-shaped reinforcing component 13 is disposed. The reinforcing component 13 has a foam heat insulating material holding portion 13a on the side surface side of the outer box. When the foam heat insulating material 5 is filled, the foam heat insulating material holding portion 13a and the foam heat insulating material 5 are in close contact with each other.

According to such a configuration, the heat insulating box body is strong against the load by the rigidity of the reinforcing component 13 and the holding force by the close contact between the foam heat insulating material holding portion 13a and the foam heat insulating material. It can be secured. Moreover, the area | region where heat insulation performance falls by the heat conduction of the reinforcement component 13 can be suppressed to the minimum. In the case of a rotating refrigerator door, the strength against a load (such as the weight of the door) is improved, so that the door fixing parts can be prevented from falling off.

According to the structure of Embodiment 1, the heat insulation performance of a heat insulation box improves. Since the resin attach 2 connecting the outer box 1 and the inner box 3 is simple and small in size, it is easy to assemble and can be installed in a refrigerator having a thin opening. Since the outermost surface of the opening of the heat insulating box is formed of the metal outer box 1, it is possible to secure strength against stress caused by deformation of the heat insulating box and load caused by installation of the door 6. The structure fits within the dimensional constraints and has the effect of ensuring the strength and the magnetized surface.

Embodiment 2. FIG.
FIG. 6 is an enlarged view of the vicinity of the opening of the heat insulation box according to Embodiment 2 of the present invention. The dew prevention heater 4 is installed at the corner 1 d of the outer box 1. The resin attach 2 is provided with a spacer portion 2e between the bottom portion 2c and the side surface portion 1a. The spacer portion 2 e of the resin attach 2 brings the dew prevention heater 4 into close contact with the outer box 1.

  According to such a configuration, the dew prevention heater 4 is in contact with the outer box 1 having good thermal conductivity, so that the heat generated by the dew prevention heater can be efficiently transmitted to the outer box 1 and the gasket 7. . Further, when the function of the dew prevention heater 4 is realized by a condensation pipe in which a refrigerant that has been adiabatically compressed and heated to a high temperature flows in the refrigeration cycle, the amount of refrigerant condensation increases and the performance of the refrigeration cycle also improves.

Embodiment 3 FIG.
FIG. 7 is an enlarged view of the vicinity of the opening of the heat insulating box according to Embodiment 3 of the present invention. The outer box 1 includes a side surface portion 1a, a corner portion 1d, a magnetized surface 1b, a bent portion 1e, an inclined portion 1f, a bottom portion 1g, an elastic portion 1h, and a tip portion 1i. The resin attach 2 includes a foot portion 2f and a fixing portion 2g. The resin attach 2 functions as a heater fixing spacer. The dew prevention heater 4 is disposed at the corner 1d of the outer box.

The resin attach 2 is press-fitted into the gap between the side surface portion 1a of the outer box 1 and the double flange structure portion (1e to 1h), and fixes and positions the dew prevention heater 4. The resin attach 2 is intermittently inserted instead of the entire circumference of the opening of the heat insulating box. A region where the resin attach 2 is not inserted is filled with the foam heat insulating material 5.

According to such a structure, it can prevent that the dew prevention heater 4 contacts a metal double flange structure part (1e-1h). Since the region where the resin attach 2 is not inserted is filled with the foam heat insulating material 5, the heat insulating performance of the heat insulating box is improved. Moreover, since the resin attachment 2 does not require a fitting function with the inner box 3, it can have a simple structure and material processing costs can be suppressed.

Embodiment 4 FIG.
FIG. 8 is a longitudinal sectional view of the vicinity of the opening of the heat insulating box according to Embodiment 4 of the present invention. The outer box 1 includes a side surface portion 1a, a corner portion 1d, a magnetized surface 1b, a bent portion 1e, an inclined portion 1f, and a tip portion 1i. The resin attach 2 includes an elastic portion 2b, a foot portion 2f, and a fitting portion 2h. The outer case 1 and the resin attach 2 work together as a double flange structure (1e, 1f, 1i, 2h, 2b). The convex portion 3c of the inner box 3 to which the dew prevention heater 4 is attached is accommodated in the double flange structure portion.

The front end portion 1i of the outer box 1 is disposed along the side surface portion 1a. The resin attach 2 is press-fitted in the depth direction of the heat insulating box toward the tip 1i of the outer box 1 and fixed. The foot portion 2 f regulates the deflection of the elastic portion 2 b that occurs when the outer box 1 and the inner box 3 are assembled. The fitting portion 2 h of the resin attach 2 holds the tip portion 1 i of the outer box 1.

According to such a structure, since the edge part of the outer case 1 is extended via the inclination part 1f, the rigidity of a heat insulation box improves. The resin attach 2 and the outer box 1 can be fixed by press-fitting the distal end portion 1i and the fitting portion 2h in the depth direction. Molding of the front end portion 1i of the outer box 1 can be realized without requiring significant equipment modification of the outer box molding machine.

Embodiment 5 FIG.
FIG. 9 is an enlarged view of the vicinity of the opening of the heat insulation box according to Embodiment 5 of the present invention. The outer box 1 includes a side surface portion 1a, a corner portion 1d, a magnetized surface 1b, and a tip portion 1c. The end portion 1c having a hook-like end portion is provided in a direction perpendicular to the magnetized surface 1b. The resin attach 2 includes a housing portion 2h, a groove portion 2i, a convex portion 2j, and a tip portion 2f. A fitting claw 2m is provided in the groove 2i. A dew prevention heater 4 is fixed to the convex portion 2j. The inner box 3 includes a step portion 3a, a straight portion 3b, and a tip portion 3d.

The resin attach 2 is press-fitted into the inner box 3, and the distal end portion 3d and the accommodating portion 2h are fitted. The outer claw 1 moves relative to the inner box 3 from the opening to the back, so that the fitting claw 2m comes into contact with the tip 1c of the outer box 1. The fitting claw 2m is elastically deformed and gets over the front end 1c of the outer box 1. Furthermore, when the outer box 1 and the resin attach 2 make a pair motion, the tip 1c is locked to the fitting claw 2m, and the assembly of the outer box 1 and the inner box 3 is completed. When the assembly is completed, the corner 1d of the outer box 1 and the tip 2f of the resin attach 2 are in close contact with each other to prevent leakage during filling with the foam insulation.

  According to such a structure, a double flange structure part can be deleted. Since the outer box 1 and the inner box 3 perform only the relative movement back and forth, the space required for assembly can be greatly reduced. The assembly line length is shortened, and a larger heat insulation box can be assembled.

Embodiment 6 FIG.
FIG. 10 is a cross-sectional view of the vicinity of the opening of the heat insulation box according to Embodiment 6 of the present invention. The outer box 1 includes a side surface portion 1a, a corner portion 1d, a magnetized surface 1b, a step portion 1j, and a tip portion 1c. The end portion 1c having a hook-like end portion faces the direction parallel to the magnetized surface 1b (frontage direction) because of the step portion 1j. The inner box 3 includes a step portion 3a, a straight portion 3b, a press-fit portion 3e, a convex portion 3c, and a tip portion 3d. A dew prevention heater 4 is fixed to the convex portion 3c. The outer box 1 and the inner box 3 are assembled by fitting the front end 1c of the outer box 1 and the press-fitting part 3e.

Again, the double flange structure is not adopted. Since the resin attachment can be deleted, the material cost and processing cost of the resin attachment can be reduced. Further, by forming the front end 1c and the press-fit portion 3e so that the outer box 1 and the inner box 3 are fitted by the relative movement of the front and rear during assembly, the space required for the assembly can be further greatly reduced. The assembly line length is shortened, and a larger heat insulation box can be assembled.

Embodiment 7 FIG.
FIG. 11 is a cross-sectional view of the vicinity of the opening of the heat insulation box according to Embodiment 7 of the present invention. The outer box 1 includes a side surface portion 1a, a corner portion 1d, a magnetized surface 1b, and a tip portion 1c. The end portion 1c having a hook-like end portion faces a direction (depth direction) perpendicular to the magnetized surface 1b. The inner box 3 includes a step portion 3a, a straight portion 3b, a press-fit portion 3e, a convex portion 3c, and a tip portion 3d. The press-fit portion 3e has a bowl shape. The front end portion 1c and the press-fit portion 3e are formed so as to be fitted in the depth direction of the heat insulating box.

Again, the double flange structure is not adopted. Since the resin attachment can be deleted, the material cost and processing cost of the resin attachment can be reduced. Further, by forming the front end 1c and the press-fit portion 3e so that the outer box 1 and the inner box 3 are fitted with each other by the relative movement before and after the assembly, the space required for the assembly can be further greatly reduced. The assembly line length is shortened, and a larger heat insulation box can be assembled.

Embodiment 8 FIG.
FIG. 12 is a cross-sectional view of the vicinity of the opening of the heat insulation box according to Embodiment 8 of the present invention. The outer box 1 includes a side surface portion 1a, a corner portion 1d, a magnetized surface 1b, and a tip portion 1c. The end portion 1c having a hook-like end portion faces a direction perpendicular to the magnetized surface 1b. The inner box 3 includes a step portion 3a, a straight portion 3b, a press-fit portion 3e, a convex portion 3c, and a tip portion 3d. The tip 3d of the inner box 3 has an L-shaped cross section and is provided with a magnetic body 23.

The outer box 1 and the inner box 3 are assembled using the attractive force between the outer box 1 and the magnetic body 23. With this configuration, the resin attach 2 can be deleted. Furthermore, the material cost and the processing cost of the resin attachment can be reduced while ensuring the moldability of the inner box 3 and the assemblability of the outer box 1 and the inner box 3.

Embodiment 9 FIG.
FIG. 13: is a cross-sectional view near the opening part of the heat insulation box which concerns on Embodiment 9 of this invention. The outer box 1 includes a side surface portion 1a, a corner portion 1d, a magnetized surface 1b, a bent portion 1e, an inclined portion 1f, a bottom portion 1g, an elastic portion 1h, and a tip portion 1i. The inner box 3 includes a step portion 3a, a straight portion 3b, a convex portion 3c, a first curved tip portion 3j, and a second curved tip portion 3k. The first curved tip portion 3j and the second curved tip portion 3k act as a heater fixing claw for fixing the dew prevention heater 4. A foam heat insulating material 5 is filled between the dew prevention heater 4 and the inner box 3.

The structure of the 1st curve front-end | tip part 3j curved toward the depth direction and the 2nd curve front-end | tip part 3k curved toward the anti-depth direction is supplementarily demonstrated. FIG. 14 is a schematic view showing a method for forming the heater fixing claw. Concave and convex portions 3n are formed at the corners of the inner box 3 in the depth direction when the heat insulating box is viewed from the front. The first curved tip 3j and the second curved tip 3k are formed by cutting the concave and convex inflection portion of the concave and convex portion 3n.

The dew prevention heater 4 fixed by the heater fixing claw contacts the inner box 3 only at the corners of the heat insulating box. The dew prevention heater 4 is separated from the tip of the inner box 3 in other places. According to such a structure, the heat receiving from the dew prevention heater to the inner box 3 can be reduced, and the heat insulation performance of the heat insulation box is improved. Further, the positioning accuracy of the dew prevention heater is improved, and the dew prevention function is improved.

  DESCRIPTION OF SYMBOLS 1 Outer box, 2 Resin attachment, 3 Inner box, Dew prevention heater, 5 Foam insulation, 6 door, 7 Gasket, 8 Vacuum insulation, 12 Door hinge, 13 Reinforcement part, 23 Magnetic body

Claims (10)

The heat insulating box is composed of a door and a heat insulating box, and the heat insulating box includes a metallic outer box, a resin inner box, a resin attachment that seals a connection portion between the outer box and the inner box, and the outer box. A refrigerator comprising a foam heat insulating material filled in the inner space surrounded by the inner box and the resin attachment;
The outer box has a magnetized surface extending in the frontage direction, and a tip portion bent in a bowl shape from the magnetized surface in the depth direction,
The inner box has a stepped portion corresponding to the step of the door, and a convex portion extending from the stepped portion and projecting in the depth direction,
The resin attach has an L-shaped engaging portion that engages with the tip portion of the outer box, and a concave accommodating portion into which the convex portion of the inner box is inserted. Refrigerator. The refrigerator according to claim 1, wherein the resin attachment is provided with a spacer portion that faces the side surface of the outer box at the bottom of the housing portion. The heat insulating box is composed of a door and a heat insulating box, and the heat insulating box includes a metallic outer box, a resin inner box, a resin attachment that seals a connection portion between the outer box and the inner box, and the outer box. A refrigerator comprising a foam heat insulating material filled in the inner space surrounded by the inner box and the resin attachment;
The inner box has a stepped portion corresponding to the step of the door, and a convex portion extending from the stepped portion and projecting in the depth direction,
The outer box has a magnetized surface extending in the frontage direction, and a concave accommodating portion that is continuously formed from the magnetized surface in the depth direction and encloses the convex portion of the inner box. And
The refrigerator is characterized in that the resin attachment is provided between a side surface of the outer box and a bottom portion of the housing portion. The heat insulating box is composed of a door and a heat insulating box, and the heat insulating box includes a metallic outer box, a resin inner box, a resin attachment that seals a connection portion between the outer box and the inner box, and the outer box. A refrigerator comprising a foam heat insulating material filled in the inner space surrounded by the inner box and the resin attachment;
The outer box includes a magnetized surface extending in a frontage direction, an inclined portion continuously formed from the magnetized surface toward a corner portion, and a tip portion continuously formed with the inclined portion from the inclined portion in a depth direction. Have
The resin attach has a fitting portion that is fitted to the tip portion of the outer box, and an elastic portion that is continuously formed from the fitting portion and extends in the frontage direction,
The inner box has a step portion provided corresponding to the step of the door, and a convex portion that extends from the step portion and protrudes in the depth direction and contacts the elastic portion of the resin attachment. Refrigerator characterized by having. The heat insulating box is composed of a door and a heat insulating box, and the heat insulating box includes a metallic outer box, a resin inner box, a resin attachment that seals a connection portion between the outer box and the inner box, and the outer box. A refrigerator comprising a foam heat insulating material filled in the inner space surrounded by the inner box and the resin attachment;
The outer box has a magnetized surface extending in the frontage direction, and a bowl-shaped tip portion bent in the depth direction from the magnetized surface,
The inner box has a step portion provided corresponding to the step of the door, and a tip portion extending from the step portion toward the depth direction,
The resin attach includes a receiving portion into which the tip portion of the inner box is inserted, a groove portion that is continuously formed with the receiving portion and engages with the tip portion of the outer box, and is continuously formed with the groove portion in the depth direction. A refrigerator having a protruding convex portion. The heat insulating box is composed of a door and a heat insulating box, and the heat insulating box includes a metallic outer box, a resin inner box, and a foam heat insulating material filled in an inner space surrounded by the outer box and the inner box. A refrigerator comprising
The outer box has a magnetized surface extending in the frontage direction, and a tip portion continuously formed from the magnetized surface and bent into a bowl shape,
The inner box includes a stepped portion corresponding to the step of the door, a press-fitted portion that is continuously formed from the stepped portion and accommodates the tip portion of the outer box, and is continuously formed from the press-fitted portion and has a depth direction. A refrigerator having a protruding portion protruding from the protruding portion and a tip portion extending from the protruding portion. The refrigerator according to claim 6, wherein the outer box has a stepped portion between the tip and the magnetized surface, and the tip of the outer box faces the frontage direction. The refrigerator according to claim 6, wherein a front end portion of the outer box faces a depth direction. The refrigerator according to claim 6, wherein a front end portion of the inner box is formed in an L shape. The heat insulating box is composed of a door and a heat insulating box, and the heat insulating box includes a metallic outer box, a resin inner box, and a foam heat insulating material filled in an inner space surrounded by the outer box and the inner box. A refrigerator comprising
The inner box includes a stepped portion provided corresponding to a step of the door, a convex portion extending from the stepped portion and projecting in the depth direction, and continuously formed from the convex portion toward the depth direction. A first curved tip portion that is curved and a second curved tip portion that is continuously molded from the convex portion and curved in the anti-depth direction,
The outer box has a magnetized surface extending in the frontage direction, and a concave accommodating portion that is continuously formed inward from the magnetized surface and encloses the convex portion of the inner box. A refrigerator characterized by that.

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