JP2006046837A - Refrigerator, and method for manufacturing refrigerator door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator door capable of ensuring design property and strength and preventing dew condensation in a hand grip part with a minimized number of part items. <P>SOLUTION: The refrigerator comprises the refrigerator door covering an opening of a storage chamber, the door being opened and closed, thereby storing a storage matter in the storage chamber; a door outer plate made of a steel plate, which is arranged on the outer surface of the refrigerator door, and has a heat insulating material arranged in a space with a door inner plate combined to the inside thereof; a handle fixed to one side end of the door outer plate, and having a hand grip part formed of a recessed part for inserting a hand from the outside and a protruding part to be gripped at the time of opening and closing the refrigerator door; and a door cap fitted to the upper edges and lower edges of both the handle and the door outer plates to integrally form the refrigerator door. The handle is formed of a metal extrusion molded product of aluminum or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure of a refrigerator and a method for manufacturing the door.

  In a conventional refrigerator door, a resin handle part molded by injection molding is fixed to a door member by a fixing tool such as a screw. Therefore, there is a problem that the number of parts is large and the mold is complicated. As a conventional refrigerator door for solving this problem, a technique for a refrigerator door comprising a synthetic resin handle body formed by extrusion molding and a handle cap attached to an end of the handle is known. ing. (For example, refer to Patent Document 1). In addition, there is a door provided with a handle shape by bending a steel door outer plate. (For example, refer to Patent Document 2).

Japanese Patent Laid-Open No. 4-313694 (5th page, FIG. 1) JP 2000-97550 A (page 5, FIG. 2)

  The door of the conventional refrigerator has a handle that is easy to handle, and the handle is in the forward direction. However, in order to make the depth dimension of the entire product smaller and to secure the dimension of the handle, the dimension of the handle is secured by pressing the door outer plate. In addition, because the handle has a concave shape on the handle, the heat insulation thickness of the door is reduced, but the synthetic resin has poor thermal conductivity, and the handle may be dewed when used at high humidity. Therefore, it is necessary to add an aluminum tape or the like for transferring heat from the door outer plate, and there is a problem that workability is poor. Therefore, in order to ensure the heat insulation thickness with a door inner board, the food storage part had to be sacrificed.

  In addition, since the handle is made of synthetic resin and secondary processing such as painting and plating is required to improve the design of the door, there is a problem that the manufacturing cost increases. Further, when the strength is weak and the door is large, there is a problem that it becomes difficult to assemble due to warping or fining of parts. Further, since the strength of the door is weak even after the door is assembled, there is a problem that a reinforcing member has to be added.

  In addition, since the handle part is made by bending the steel outer door plate, the door of the conventional refrigerator increases the door outer plate pressing process in order to make the handle part shape. There was a problem of handling the whole. Moreover, since the shape is changed by the spring back of the steel plate, there is a problem that the assembling work with the upper and lower door caps becomes difficult. Moreover, since the whole door is comprised with the steel-plated door outer plate, there existed a problem that a design became monotonous with few changes.

  Also, because the door cap also has a design surface with the offset shape of the door outer plate, the handle is not clear, and when the upper or lower handle is opened and closed, the upper or lower door There was a safety problem of putting a finger in the gap.

  Moreover, since the shrinkage | contraction rate of each material differs in a door cap, a steel plate, and a handle part with the conventional door, distortion generate | occur | produced in the heat cycle test and the door cap might generate | occur | produce the crack.

  In addition, although the door inner plate of the door of the conventional refrigerator is positioned on the rear surface of the door outer plate and the rear surface of the handle, the door inner plate rides on the door outer plate or the rear surface of the handle due to the warpage or fin of each part. There was a problem.

  The object of the present invention is to solve the above-described problems, and is a highly reliable refrigerator that can easily prevent dew on the handle, and a strong door with a large number of parts and a large door. However, the manufacturing method of the refrigerator which is easy to assemble is obtained.

  The refrigerator according to the present invention is a steel that has a heat insulating material between a refrigerator door that covers the opening of the storage room and stores the stored items in the storage room by opening and closing, and a door inner plate that is disposed on the outer surface of the refrigerator door and combined inside. A door outer plate formed with a scissors, a handle having a handle portion that is fixed to one end of the door outer plate and includes a concave portion into which a hand is inserted from the outside when the refrigerator door is opened and closed, and a convex portion to be hooked, and the handle and the door outer plate And a door cap that is integrally fitted to the upper and lower edges of the refrigerator door, and the handle is made of an extruded product of metal such as aluminum.

  Since the refrigerator according to the present invention conducts the outside air temperature from the outer plate by the heat conduction of the metal of the handle portion, dew can be prevented even if the heat insulation thickness of the handle portion is thin. Moreover, since the handle is formed by extrusion molding of a metal such as aluminum, warping and fining can be prevented even when the strength is strong and the door is lengthened. Further, since the handle is formed by extrusion, a handle having a stable shape can be formed with a simple mold. Moreover, since the door outer plate portion and the handle portion can be made different colors, a refrigerator with good design can be obtained.

Embodiment 1 of the Invention
FIG. 1 is a perspective view of a refrigerator to which the present invention is applied. The refrigerator is composed of a heat insulating box 2 in which a heat insulating material is provided between an outer box 1 made of a steel plate that opens forward and an inner box made of resin (not shown). It is divided into a plurality of chambers by a partition member that does not. The front opening of each partitioned chamber is closed by a rotary door 3, 4, 5, 6, 7 so that it can be opened and closed. In this embodiment, 3 and 4 are refrigerator compartment doors, 5 is an ice compartment door, 6 is a freezer compartment door, and 7 is a vegetable compartment. Reference numeral 8 denotes an evaporating dish cover for accumulating water generated during defrosting from the interior. Each of the doors of the storage room has a door structure in which a handle having the same cross-sectional shape for opening and closing is provided at the center and opened on both sides. For this reason, it is the structure which has the design which the handle arrange | positioned in a straight line becomes the accent with respect to the whole some door arrange | positioned from the upper part of the refrigerator main body to the bottom, ie, an up-down direction. The left and right doors that open and close on both sides have the same width dimension, and the door heights of the doors 3, 4, and 7 are substantially the same. It is a small door.

  FIG. 2 is a perspective view of the door 4 of the present invention. A steel plate door outer plate 11 constituting the front design surface, a handle 13 fitted to one side of the door outer plate, a resin door inner plate (not shown) constituting the door inner surface, and upper and lower ends thereof The upper door cap 14 and the lower door cap 15 are fitted, and the inside is filled with a heat insulating material, injected, or inserted. In addition, a magnet gasket (not shown) is fitted around the inner plate side of the door 4 to prevent outflow of cool air in the refrigerator.

  3 is a ZZ cross-section of FIG. 2, and FIG. 4 is an enlarged explanatory view of the handle structure. The door skin is composed of a front surface 20 constituting a door front design, a side surface 21 bent backward at the hinge side end portion of the door, and a rear surface further bent inward from the rear end portion of the side surface 21. 22. Further, the corner portions of the front surface 20 and the side surface 21 may be configured with an arbitrary bend R in order to change the door design, or may be configured with a C surface having a chamfer as illustrated.

  The handle 13 has the same cross-sectional shape from the upper end to the lower end of the door, and is formed thin by extrusion of a metal such as aluminum. The cross section is composed of a rear surface 30 that constitutes the rear surface of the door and positions the inner plate in the front-rear direction, a side surface 31 that constitutes the side surface of the door, a concave surface 32 that constitutes the handle, and a convex surface 33 that constitutes the grip portion and the front surface of the door. The By integrally molding the concave surface 32 and the convex surface 33, it is possible to obtain a handle excellent in cleanability without joints. Here, the convex surface 33 is displaced by 10 to 50 mm from the side surface 31, so that a hand can be inserted from the front, that is, from the outside of the refrigerator, and the convex surface 33 can be put on the hand. When the refrigerator according to the present invention is visually observed from the front side, the central concave surface 32 can be seen from the horizontal gap between the handle side surface and the convex surface of the handle, but the design such as the color tone and metal feel is the same as the convex surface 33, and this handle portion is integrated. It feels as an accent. Further, since the handle portion of the door handle 13 is opened and closed by inserting the hand from the center with respect to the doors on both sides, the protruding amount of the handle convex surface 33 from the door outer surface can be suppressed to the extent of the handle portion.

  Further, the convex portion 33 which is a handle portion is provided with a hollow portion 34 which is circular so that the tip is thickened, and by making the outer dimensions thick by this hollow portion, it is easy to grip and the strength of the handle portion is ensured. is doing. A dimension substantially corresponding to the convex portion protrudes from the outer surface of the refrigerator door. In other words, it is possible to obtain a refrigerator door that secures flatness to the extent that the hollow portion provided inside the convex portion protrudes outward. Furthermore, a hollow portion is also provided on the side surface 31 of the handle, and the strength of the handle made of a thin metal molded product such as aluminum is increased on both sides of the concave surface 32 and the strength of the convex surface and the side surface that is the tip of the handle is reduced. As a countermeasure against deformation.

  In addition, because the handle is made of extruded metal such as aluminum, heat is transmitted from the door outer plate, so that the concave surface 32 is not dewed, so that the heat insulation thickness can be reduced. It becomes possible to enlarge the concave portion, or conversely, to make the food storage portion larger by thinning the door. In the case of aluminum, an alumite treatment or an etching treatment is applied to improve the design. As the metal, for example, stainless steel or magnesium is used in addition to aluminum. Although the structure of this handle has been described with a double door, the present invention is not limited to this, and the same structure and effect can be obtained even if it is provided at the end of the refrigerator body.

  In addition, the rib 36 provided as a measure against the strength of the handle is integrated by bonding the entire door with a heat insulating material or an adhesive used in combination with this heat insulating material. It is an anchor shape for strengthening the adhesion with the handle. The anchor shape in this case may be L-shaped, Z-shaped or U-shaped. Even when a heat insulating material is inserted into the door, this anchor can be used for fixing the heat insulating material.

  As a heat insulation measure, the door inner plate 12 made of resin is provided with a flange positioned on the rear surface 22 of the door outer plate 11 and the rear surface 30 of the handle. Moreover, the groove shape for attaching the magnet gasket for maintaining the airtightness of a refrigerator main body and a door is provided in the inner side.

  The handle rear surface 30 is preferably not longer inward than the gasket insertion shape of the inner plate into which the gasket provided on the door in contact with the partition of the storage chamber is inserted in order to prevent heat from entering the storage chamber. In addition, since a dew-proof pipe is embedded in the part of the refrigerator main body where the magnet gasket is magnetized, this part is likely to be hotter than the outside air, and the rear surface 30 and the side surface 31 are located outside this part. Thermal penetration into the interior will be limited.

  Next, a structure for fixing the handle and the door outer plate and an assembly structure of the door inner plate will be described. As shown in FIGS. 3 and 4, the end of the door skin is attached so as to overlap the convex surface 33 side of the handle 13, and is pressed against the handle by a wedge 16 that is an elastic body provided inside such as filled with a heat insulating material. It has been. The wedge is formed by resin injection molding or extrusion molding, and is fitted into a space between the rib 37 provided on the handle and the outer plate, and is fitted and fixed to the claw shape of the rib 38. Furthermore, the handle side end of the front iron plate of the door outer plate 11 is sandwiched between the handle 13 and the elastic structure of the wedge 16 fixed to the handle, and is held integrally with the handle 13. A plurality of the wedges 16 may be arranged over the entire length in the door height direction, or a single wedge 16 may be provided in a state where the door is vertically full length or slightly shorter. Although the structure in which the wedge 16 is fitted and fixed to the handle has been shown, any structure that adds elasticity to the outer plate, such as a unit integrated with the handle, may be used.

  FIG. 5 is a perspective view of the lower cap 15. The lower cap 15 is formed by injection molding of synthetic resin into a shape that matches the shape of the lower edge in which the door outer plate 11 and the handle 13 are fitted, and the periphery of the lower cap 15 is formed on the lower edge of the door outer plate and the handle. The flange 40 of the shape to cover is provided, and the door outer plate | plate 11 fits into the groove | channel between the ribs 42 provided in the inner side. In addition, ribs 43 and 44 that fit into the hollow portions 34 and 35 of the handle are provided. Of course, as shown in FIG. 5, the cap is positioned with respect to the door inner plate 12 by a flange or a rib.

  Further, the upper cap 14 has a symmetric shape with the lower cap 15 in FIG. 5, and the periphery thereof has a handle, a door outer plate, a flange covering the upper edge of the door inner plate, and an inner side thereof. The provided rib and the rib which fits into the hollow parts 34 and 35 of a handle | steering-wheel are provided.

  In addition, a closing surface 45 is provided at the fitting portion between the upper cap 14 and the handle grip portion of the lower cap 15, thereby clarifying the delimitation indicating that it is a hand-held space. Further, by making it difficult to grip the handle handle portion at the end by the closing surface 45, it is possible to prevent a finger from being caught between other doors when the door is closed.

  In addition, the door cap made of synthetic resin, a door shell made of steel, and an extruded handle made of metal such as aluminum, the door cap is the weakest in terms of strength due to repeated elongation differences in the heat cycle test. As shown in FIG. 6, the upper cap or the lower cap is divided into two parts, and a large cap 50 and a small cap 51 provide clearance to suppress the occurrence of cracks. it can. The inside of the door is sealed from above and below by the large cap 50. The small cap 51 is fitted from the outside of the large cap 50, and the small cap 51 is further provided with ribs that fit into the hollow portions 34, 35, etc. of the handle so as to ensure fixation. .

  Further, by making the upper cap or the lower cap into two parts, the height of the flange 41 of the small cap 51 is made higher or lower than the flange 40 of the large cap 50, so that the metal such as aluminum can be designed. It is possible to reduce or enlarge the exposed area of the handle portion, which is an extruded part, and to have abundant variations in design.

  Further, as shown in FIG. 4, by providing a slope guide portion 39 that can guide the inner plate when inserting the inner plate into the handle rear surface 30, when covering the door inner plate at the time of injecting the foam insulation, the door inner plate flange However, it is possible to eliminate the foaming failure of the door by sliding down without riding on the rear surface of the handle.

  Next, the assembly procedure will be described. The door outer plate 11 is aligned with a predetermined position of the handle 13, the wedge 16 is fitted to the rib 36 of the handle 13, and the door outer plate 11 is brought into close contact with the handle 13 with the wedge 16. Thereafter, a door lower cap 15 is attached from below the fitted handle 13 and door outer plate 11. At this time, the door outer plate 11 is inserted between the flange 40 and the rib 42 of the lower cap 15, and the flange 40 overlaps the door outer plate 11 and the outer surface of the handle 13. The ribs 43 and 44 provided on the lower cap 15 are inserted into the hollow portions 34 and 35 of the handle. The large cap 50 and the small cap 51 are assembled in advance by being fitted together. Next, the upper cap 14 is attached from above the handle 13 and the door outer plate 11 fitted. At this time, the end face of the door outer plate is inserted between the outer peripheral flange and the rib of the upper cap, and the outer peripheral flange overlaps with the outer surface of the door outer plate 11 and the handle 13. The rib provided on the upper cap 14 is inserted into the hollow portions 34 and 35 of the handle.

  Then, the door inner plate 12 is temporarily fixed between the rear surface 22 of the door outer plate 11 and the rear surface 30 of the handle 13, moved to the foam heat insulating material injection facility, the door inner plate 12 is lifted and the foam heat insulating material is injected, By covering the door inner plate 12, the space surrounded by the door outer plate 11, the handle 13, the upper and lower caps 14, 15 and the door inner plate 12 is filled with a foam heat insulating material and solidified to form an integrated door. . The same procedure is used for a structure in which a heat insulating material is inserted.

  Here, the structure of the door main body has been described by taking the door 4 as an example, but the other doors 3, 5, 6, and 7 have the same structure. Moreover, in the example of this embodiment, the width dimensions of the refrigerator compartment left door 3, the refrigerator compartment right door 4, the ice compartment door 5, the freezer compartment door 6, and the vegetable compartment door 7 are the same. Is the same cross-sectional shape. When a vacuum heat insulating material is used without using a foam heat insulating material, a structure in which the vacuum heat insulating material is bonded to an outer plate or the like can be made into an integrated door structure. However, it is natural that the width dimension may be changed for each door.

  Since the handle is made of an extruded part made of metal such as aluminum, the strength of the door is increased and the reinforcing member added for the purpose of reinforcement can be eliminated. Also, since there are few warps and fins of the parts, the door can be assembled easily. By using a lightweight alloy as the metal, the increase in weight can be suppressed, and the entire refrigerator can be deformed and distorted during manufacturing, installation, transportation, moving, etc. due to increased strength, and placed inside the refrigerator The possibility of leakage of refrigerant such as hydrocarbons and chlorofluorocarbons filled in the refrigeration cycle is reduced, and a more reliable refrigerator can be obtained.

  The cross-sectional shape of the handle and the door outer plate is the same for each door placed up and down, so the height of the refrigerator door can be changed without adding a special mold, upper cap, lower cap The shape is also symmetric and easy to design. In addition, by unifying the door shape of the entire refrigerator as shown in FIG. 1, the accents of the handle part over the entire vertical length of the center of the front of the refrigerator body are coordinated, and the parts are unified and the number of parts is reduced, making manufacture easy. Become.

  Since the handle is provided with an anchor rib, it can be fixed by filling with foam insulation, and it can be used to fix the insulation. It is possible to manufacture.

  Since the handle is made of a metal such as aluminum, a handle having a good design can be obtained by expressing the difference in color and texture from the door outer plate without performing secondary processing such as painting.

  Since the handle has a hollow end such as a grip, it is easy to grip and a handle with high strength can be obtained.

  The cap has a handle and a side surface that wraps with the door skin, so even if there is an error in the vertical dimensions of the door skin and the handle, a well-designed door without gaps can be obtained, and foam insulation can leak. Can be prevented.

  Since the rib provided in the hollow portion of the handle is provided on the cap, positioning when the cap is fitted to the handle is easy.

  Since the door outer plate is pressed against the handle by the elasticity of the wedge, a gap between the door outer plate and the handle can be prevented, a door with good design without a gap can be obtained, and leakage of the foam insulation can be prevented. In addition, since the press work of the large and heavy outer plate is eliminated, the handling becomes the work of fitting and inserting the heat insulating material, so that it is easy to assemble and manufacture is easy.

  In addition, because the handle has a concave shape on the handle, the insulation thickness of the door is reduced, and dew may occur on the handle when used at high humidity, but it does not receive heat conduction in the cabinet. As described above, the handle is configured on the outer side of the magnet gasket, and a metal such as aluminum having good conductivity is used. Therefore, it is possible to prevent the handle from being dewed by transferring heat of the door outer plate.

  The width of the left and right doors of the refrigerator is the same, so the door and handle parts, for example, the upper and lower caps have the same shape on the upper left and lower right, and the panels such as the door outer plate and door inner plate are turned upside down. Thus, parts can be shared, and the number of molds required can be reduced even in a refrigerator having a plurality of doors. In addition, when recycling in refrigerator disposal, not only screws are not attached and disassembly is easy, but because the parts and structure are the same, disassembly can be performed easily.

  The refrigerator of the present invention covers the surface of the storage room for storing food and the like, and stores the storage in the storage room by opening and closing, the door skin that forms the outer surface of the refrigerator door, and the door skin. A heat insulating material that is provided between the door inner plate and the heat insulating material to be insulated, and a hook portion that is fixed to one side end of the door outer plate and that has a concave portion into which a hand is inserted from the outside when the refrigerator door is opened and closed and a convex portion to be hooked. And a door cap that is fitted to the upper and lower edges of the handle and the door outer plate to integrally form the refrigerator door, and the handle is made of an extruded product made of metal such as aluminum. Due to the component structure, a refrigerator that is easy to manufacture and highly reliable can be obtained.

  The refrigerator door of the present invention is provided with a closed surface in the recessed portion of the door cap that is fitted to the upper and lower edges of the handle to clarify the handle space when the door is opened and closed, that is, a partition is provided in the area where the hand can be inserted. An easy-to-use refrigerator is obtained.

  The door of the refrigerator of the present invention prevents cracks in the heat cycle test at the mating part of the metal parts such as steel plate and aluminum and the cap by making the door cap fitted into the upper and lower edges of the handle into two parts. It is possible to obtain a refrigerator with high reliability and high performance.

  In the refrigerator of the present invention, the door cap fitted to the upper and lower edges of the handle can be made into two parts, the exposed area of the handle portion can be increased or reduced in design, and a wide variety of designs can be manufactured. I can do it.

  In the refrigerator of the present invention, when the inner plate is placed on the rear surface of the handle, since the guide shape of the inner plate is provided, the possibility of manufacturing failure is low.

  The present invention has a metal handle structure and a door structure that can be easily formed integrally with an upper cap and a lower cap, so that the dew of the handle portion can be easily prevented and the food storage portion can be enlarged, Even if the door is large and strong, it is easy to assemble and a refrigerator door can be obtained without adding a reinforcing member.

  In addition, the present invention has a simple mold structure, requires few processing steps such as pressing, can be stably assembled, and can provide a refrigerator door with good design.

  The refrigerator door according to the present invention includes a door outer plate, a handle fitted on one side end of the door outer plate, having a handle portion, a door inner plate combined to face the outer plate, and these A refrigerator door with a door cap fitted to the top and bottom edges and filled with foam insulation inside. The handle is made of extruded metal such as aluminum, so it has a simple structure and high reliability. Can be obtained.

  The double door of the refrigerator according to the present invention can secure the dimensions of the handle and the concave heat insulating thickness of the handle by setting the opening of the handle in the reverse direction. Moreover, since the outside temperature from the outer plate is conducted by heat conduction of the metal, dew can be prevented even if the heat insulating thickness of the handle portion is thin. Moreover, since the handle is formed by extrusion molding of a metal such as aluminum, warping and fining can be prevented even when the strength is strong and the door is lengthened. Further, since the handle is formed by extrusion, a handle having a stable shape can be formed with a simple mold. Moreover, since the door outer plate portion and the handle portion can be made different colors, a refrigerator door with good design can be obtained.

  Further, the manufacturing method of the refrigerator door according to the present invention includes a handle having a handle portion including one side end of a door outer plate that forms an outer surface of the refrigerator door, a concave portion into which a hand is inserted from the outside when the refrigerator door is opened and closed, and a convex portion to be hooked. When assembling the door, the door outer plate is sandwiched and held by a wedge fixed to the handle, and the door cap is attached to the upper and lower edges of the handle and door outer plate assembled in the outer plate assembling step. And a door forming step for integrally forming a refrigerator door, and the door cap is fitted from the outside and the inside of the upper and lower edges of the door outer plate, so that a highly reliable refrigerator can be easily manufactured.

It is a perspective view of the refrigerator in Embodiment 1 of this invention. It is a perspective view of the door in Embodiment 1 of this invention. It is ZZ sectional drawing of the door in FIG. 2 of Embodiment 1 of this invention. It is the elements on larger scale of FIG. 3 in Embodiment 1 of this invention. It is a perspective view of the cap in Embodiment 1 of this invention. It is an assembly drawing of the cap divided into two parts in Embodiment 1 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Outer box, 2 Heat insulation box, 3 Refrigerating room left door, 4 Refrigerating room right door, 5 Ice room door, 6 Freezing room door, 7 Vegetable room door, 8 Evaporating dish cover, 10 Door body, 11 Door outer plate, 12 Door inner plate, 13 Door handle, 14 Door upper cap, 15 Door lower cap, 16 Wedge, 17 Magnet gasket, 20 Door outer plate front surface, 21 Door outer plate side surface, 22 Door outer plate rear surface, 30 Handle rear surface, 31 Handle side surface 32 Handle concave surface, 33 Handle convex surface, 34 Handle hollow portion, 35 Handle hollow portion, 36 Handle rib, 37 Handle rib, 38 Handle rib, 39 Guide portion, 40 Cap outer flange, 41 Cap outer flange, 42 Cap rib, 43 Cap rib, 44 Cap rib, 45 Closing surface, 50 Large cap, 51 small cap.

Claims (11)

It was formed of a steel plate having a heat insulating material between a refrigerator door that covers the opening of the storage room and stores the stored items in the storage room by opening and closing and a door inner plate that is arranged on the outer surface of the refrigerator door and combined inside. Both a door outer plate, a handle that is fixed to one side end of the door outer plate and has a handle portion including a concave portion into which a hand is inserted from the outside when the refrigerator door is opened and closed, and a convex portion to be hooked, and both the handle and the door outer plate And a door cap that is integrally formed with the upper and lower edges of the refrigerator door, and the handle is made of a metal extruded product such as aluminum. The refrigerator according to claim 1, wherein hollow portions are provided at both ends sandwiching the concave portion of the handle. The refrigerator according to claim 1, wherein a rib that engages with the heat insulating material is provided on the heat insulating material side of the handle. 2. The structure according to claim 1, wherein an elastic body fitted to the handle is provided on a heat insulating material side of the handle, and the door outer plate is sandwiched and held between the elastic body and the handle. Refrigerator. 2. The refrigerator according to claim 1, wherein flanges or ribs respectively fitted to upper and lower edges of both the handle and the door outer plate are provided on the door cap. The refrigerator according to claim 1, wherein a closing surface is provided on a surface corresponding to a concave portion of the handle of the door cap fitted to an upper edge and a lower edge of the handle to divide a handle space. The refrigerator door according to claim 1, further comprising a guide portion that serves as a guide for the inner plate when the inner plate is placed on a rear surface of the handle. Between a refrigerator door that covers a plurality of compartment openings provided in the vertical direction of the refrigerator main body and opens and closes the stored items into and out of the compartment, and a door inner plate that is arranged on the outer surface of the refrigerator door and combined inside A door outer plate formed of a steel plate having a heat insulating material, and a handle having a handle portion including a concave portion that is fixed to one end of the door outer plate and a hand is inserted from the outside when the refrigerator door is opened and closed, and a convex portion that is hooked. A door cap that is fitted to the upper and lower edges of both the handle and the door skin, and integrally forms the refrigerator door, and the refrigerator door extends vertically on both sides of the warehouse opening. The refrigerator is characterized in that the horizontal gap between the handle portions of the doors on both sides can be seen in a straight line between the upper and lower sides of the refrigerator door. The refrigerator according to any one of claims 1 to 8, wherein an exposed area of the handle portion can be enlarged or reduced by changing a flange height of a door cap that covers an upper and lower edge on an outer peripheral side of the handle. The refrigerator according to any one of claims 1 to 8, wherein a horizontal gap between a side surface of the handle and the convex portion is arranged so that the upper and lower sides of the entire refrigerator main body are in a straight line. When assembling a side edge of the door outer plate that forms the outer surface of the refrigerator door, and a handle having a handle portion made up of a concave portion into which a hand is inserted from the outside when the refrigerator door is opened and closed and a convex portion to be hooked, are fixed to the handle. An outer plate assembling step for holding the door outer plate between the handle by an elastic body and holding the door cap on the upper and lower edges of the handle and the door outer plate assembled in the outer plate assembling step. And a door forming step for integrally forming the refrigerator door, wherein the door cap is fitted from outside and inside the upper and lower edges of the handle or the door outer plate.

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