JP6942170B2 - Refrigerator door - Google Patents

Description

The embodiment relates to a refrigerator door characterized by a heat insulating structure.

In recent years, refrigerators equipped with a refrigerator door in which a decorative plate made of glass or transparent plastic colored for decoration is attached to the front surface of the door as a front plate have appeared. On the other hand, refrigerator doors with a heat insulating structure in which a heat insulating material is incorporated in order to reduce the thickness of the refrigerator door and maintain or enhance the heat insulating property have also appeared.

Such a refrigerator door is desired to have a heat insulating structure that can simplify the assembly process and does not damage the heat insulating material.

Japanese Unexamined Patent Publication No. 2011-58787 Japanese Unexamined Patent Publication No. 2012-207857

The present invention has been made in view of the above technical problems, and provides a heat insulating structure capable of reducing the door thickness, maintaining or enhancing the heat insulating property, simplifying the assembly process, and not damaging the heat insulating material. The purpose is to provide a equipped refrigerator door.

The refrigerator door of the embodiment includes a door frame, a front plate attached to the door frame, a structure arranged in the door frame so that the front surface faces the back surface of the front plate, and the structure. a vacuum heat insulating material disposed on the rear surface of the body, so as to contact the rear surface of the front and the structure of the previous SL vacuum heat insulating material, arranged molded insulation between the structure and the vacuum heat insulating material It is provided with a material and has an opening communicating with the structure on the side surface of the door frame.

The front view of the refrigerator which attached the refrigerator door of 1st Embodiment. The perspective view of the refrigerator which assembled the refrigerator door of 1st Embodiment in the state which opened the refrigerating room door. The perspective view of the refrigerator door of the 1st Embodiment. The perspective view seen from the back side of the refrigerator door of 1st Embodiment. The exploded perspective view of the door frame and the front plate in the refrigerator door of 1st Embodiment. The perspective view seen from the back side of the door frame in the refrigerator door of 1st Embodiment. The perspective view seen from the back side of the molded heat insulating material in the refrigerator door of 1st Embodiment. A perspective view of the molded heat insulating material in the refrigerator door of the first embodiment as viewed from the front side. The exploded perspective view which shows the method of assembling the molded heat insulating material, the protective sheet and the vacuum heat insulating material in the refrigerator door of 1st Embodiment. The perspective view of the heat insulating material assembly in the refrigerator door of 1st Embodiment. The exploded perspective view which shows the method of assembling the heat insulating material assembly into the inner frame of the refrigerator door of 1st Embodiment. The perspective view of the door substrate in the refrigerator door of 1st Embodiment. The perspective view seen from the back side of the door substrate in the refrigerator door of 1st Embodiment. The exploded perspective view which shows the method of assembling the door substrate to the door frame in the refrigerator door of 1st Embodiment. FIG. 5 is a cross-sectional view showing a portion of a front plate, a door frame, and a heat insulating material assembly in the refrigerator door of the first embodiment. The exploded perspective view which shows the method of assembling the molded heat insulating material, the protective sheet and the vacuum heat insulating material in the refrigerator door of the 2nd Embodiment. The exploded perspective view which shows the method of assembling the vacuum heat insulating material, the protective sheet and the molded heat insulating material with respect to the inner frame in the refrigerator door of the 2nd Embodiment. The exploded perspective view which shows the method of assembling the door frame with respect to the door base in the refrigerator door of the 2nd Embodiment. The perspective view of the refrigerator door of the 2nd Embodiment. The exploded perspective view of the part of the door frame in the refrigerator door of the 3rd Embodiment. FIG. 5 is a cross-sectional view showing a portion of a front plate, a door frame, and a heat insulating material assembly in the refrigerator door of the third embodiment.

Hereinafter, embodiments will be described in detail with reference to the figures. The same or similar constituent members will be described with reference to the same or similar reference numerals.

[First Embodiment]
1 and 2 show the refrigerator 1. The refrigerator 1 includes a cabinet 11 which is a main body of the refrigerator. The cabinet 11 is composed of a refrigerating chamber 12, a vegetable compartment 13, a switching chamber 14 capable of switching the set temperature in the refrigerator, and a freezing chamber 15 from the upper stage. An ice making chamber 16 is provided on the left side of the switching chamber 14.

In order to cover the front opening of the refrigerator compartment 12, a pair of left and right doors 21 and 22 are attached so as to open and close the left end portion and the upper and lower ends of the right end portion by hinges 31 and 32 in a double-door manner. Further, the vegetable compartment 13, the switching chamber 14, the freezing chamber 15, and the ice making chamber 16 are provided with drawer-type doors 23, 24, 25, and 26, respectively. Although not shown on the back surface of the vegetable compartment 13, a refrigerating evaporator for cooling the refrigerating chamber 12 and the vegetable compartment 13 is arranged, and the same applies to the back surfaces of the switching chamber 14 and the freezer compartment 15. Although not shown, a refrigerating evaporator for cooling the switching chamber 14, the freezing chamber 15, and the ice making chamber 16 is arranged. Further, on the back surface of the vegetable compartment 13, a control unit including a microcomputer for controlling the refrigerator 1 is also arranged. A rotary partition 61 for maintaining a sealed state with the right door 22 is provided at the right end of the left door 21, that is, a portion of the right door 22 that faces the left end of the right door 22 in the closed state. ..

The drawer-type doors 23, 24, 25, and 26 of the left door 21, the right door 22, the vegetable room 13, the switching room 14, the freezing room 15, and the ice making room 16 are colored and transparent at the openings of the door frame that opens to the front. It is a structure in which a front plate made of a glass or translucent plastic decorative plate is attached, and a molded heat insulating material and a vacuum heat insulating material are embedded so as to be laminated inside.

In the refrigerator door of this embodiment, a capacitance type operation input unit 51 for operating the cooling operation of the refrigerator by a touch operation from the front surface of the front plate is attached to the back side of the front plate of the right door 22. ing. The operation input unit 51 detects an infrared light receiving unit for detecting the environmental state around the refrigerator, a home button, and a touch on the home button, and transparently displays the operation button name, cooling function name, cooling intensity, and the like. An LED indicator lamp, a 7-segment LED display device that transparently displays a changing numerical value such as a temperature value, and the like are provided. Further, each of the above doors 21 to 26 is provided with handles 21A to 26A, respectively.

Hereinafter, when it is not necessary to specially distinguish the drawer-type doors 23, 24, 25, 26 of the left door 21, the right door 22, the vegetable room 13, the switching room 14, the freezing room 15, and the ice making room 16 of the refrigerator 1. The door 101 is referred to as a refrigerator door 101, and its structure will be described. The vertical and horizontal dimensional ratios are different for each of the doors 21 to 26 of the refrigerator 1 shown in FIGS. 1 and 2, but in the following, the dimensional ratio is ignored and mainly the internal structure is described. explain.

As shown in FIGS. 3 and 4, the refrigerator door 101 is configured by attaching a front plate 112 of a glass or plastic decorative plate to the front opening of the front door frame 111 so as to close the front opening. Has been done. On the back side of the door frame 111, a door base 135, which is a back portion constituting the back surface of the refrigerator door 101, is assembled.

The refrigerator door 101 will be described below together with its manufacturing process. However, the order of the manufacturing process is not particularly limited, and is an example. FIG. 5 shows a method of attaching the front plate 112 to the front opening of the door frame 111. The door frame 111 is a frame body, and an inner convex edge portion 115 is formed so as to project inward at a position lower by the thickness of the front plate 112 on the inner side surface of the front opening thereof, and a double-sided tape is formed on the front surface thereof. Such an adhesive member 116 is adhered, and the back surface of the front plate 112 is adhered onto the adhesive member 116. An adhesive can also be used for the adhesive member 116. Further, the door frame 111 may be divided into sides, and a groove may be provided on each side and the front plate 112 may be fitted in the groove.

As shown in FIGS. 5 and 6, the door frame 111 is formed with an inner convex edge portion 115 and a storage portion 117 for accommodating an operation portion and a handle, which is formed by a three-dimensional groove space, as a structure. ing. The storage portion 117 is opened on one side surface of the door frame 111. With the opening 118, the parts of the operation input portion 51 and the handles 21A and 22A, which are the electrical parts shown in FIGS. 1 and 2, can be inserted into the storage portion 117 from the opening 118 and installed. Further, in the case of a handle, it is not necessary to insert a part, and the handles 21A and 22A shown in FIGS. 1 and 2 may be obtained by the user inserting a hand into the opening 118 while leaving the groove space.

In the door frame 111, the molded heat insulating material 121 and the vacuum heat insulating material 126, which will be described later, are accommodated in the space 120 between the hole 119 surrounded by the inner convex edge portion 115 and the front opening of the door frame 111 below the hole portion 119.

7 and 8 show a molded heat insulating material 121 that is packed into the space 120 inside the door frame 111. The molded heat insulating material 121 is not a urethane foaming material that is filled by injecting a liquid and foamed, but is a foamed heat insulating material (EPS) that is previously molded into a shape that matches the shape of the space 120. On the front side of the molded heat insulating material 121, a recess 122a recessed in a shape corresponding to the storage portion 117 on the door frame 111 side is formed. Further, the convex step portion 122b having a shape that can be fitted into the inner hole portion 119 of the inner convex edge portion 115 that supports the peripheral edge portion of the front surface plate 112 on the inner front surface of the door frame 111 to fill the hole portion 119. Is also formed. Further, around the back surface side of the molded heat insulating material 121, a wall portion 123a for shallowly fitting and positioning the plate-shaped vacuum heat insulating material 126 and protecting the surroundings is formed therein as will be described later. The inner side surrounded by the wall portion 123a is the recess 123b.

As shown in FIGS. 9 and 10, the protective sheet 125 is inserted into the recess 123b on the back surface side of the molded heat insulating material 121 and adhered to the back surface side of the molded heat insulating material 121, and the vacuum heat insulating material 126 is further fitted and bonded in layers. do. A PET film or urethane sheet can be used for the protective sheet 125. The protective sheet 125 is used when there is a risk of being damaged by some protrusions or protrusions if the vacuum heat insulating material 126 is directly overlapped and adhered to the back surface side of the molded heat insulating material 121, and there is no risk of damage. It may not be used if it is not necessary. Here, the one in which the protective sheet 125 and the vacuum heat insulating material 126 are bonded to the molded heat insulating material 121 is referred to as a heat insulating material assembly 127.

As shown in FIGS. 11 to 13, the heat insulating material assembly 127 configured by incorporating the vacuum heat insulating material 126 into the molded heat insulating material 121 is incorporated into the front opening 131 of the inner frame 130 of the refrigerator door 101. ..

The inner frame 130 is composed of a frame portion 130a, a flange portion 130a1 extending inward from the frame portion 130a, a bank portion 130b extending inward of a refrigerator compartment or the like, and a bottom surface portion 132 recessed one step from the flange portion 130a1. A fixing portion 130c having a protrusion shape protruding outward over the entire circumference is provided between the bank portion 130b and the frame portion 130a.

The vacuum heat insulating material 126 side of the above-mentioned heat insulating material assembly 127 is incorporated into the front opening 131 of the inner frame 130. At that time, the wall portion 123a around the door frame 121 enters the inside of the frame portion 130a of the inner frame 130, and the tip surface of the wall portion 123a comes into contact with the flange portion 130a1. Further, the back surface side (lower surface side in FIGS. 11 and 12) of the vacuum heat insulating material 126 protruding one step from the wall portion 123a is adhered to the bottom surface portion 132 formed inside the flange portion 130a1.

In this way, the heat insulating material assembly 127 is incorporated into the front opening 131 of the inner frame 130, and the back surface side (lower surface side in FIGS. 11 and 12) of the vacuum heat insulating material 126 is attached to the bottom surface 132 of the inner frame 130. By adhering, the door base 135 shown in FIGS. 12 and 13 is assembled. Here, even when the back surface side of the vacuum heat insulating material 126 is adhered to the bottom surface portion 132 of the inner frame 130, the protective sheet can be interposed between the bottom surface portion 132 and the vacuum heat insulating material 126.

As shown in FIG. 14, the door frame 111 to which the front plate 112 is attached is combined with the door base 135 thus assembled from the front side. That is, the frame portion 130a of the inner frame 130 is inserted inside the door frame 111, and the fixing portion 130c protruding from the outer periphery of the inner frame 130 is brought into contact with the front end surface of the door frame 111 to be positioned and fixed. This completes the assembly of the refrigerator door 101 shown in the perspective views of FIGS. 3 and 4 and the cross-sectional view of FIG.

As shown in FIGS. 3, 4, and 15, the refrigerator door 101 of the present embodiment is made of glass or plastic and is transparent so as to close the front opening of the front door frame 111. It is configured by attaching a front plate 112 of a decorative decorative plate. The door frame 111 is a frame body, and an inner convex edge portion 115 is formed on the front surface thereof so as to project inward at a position lower than the thickness of the front plate 112 on the inner side surface of the front opening thereof or about half of the thickness. An adhesive member 116 such as a double-sided tape is adhered, and the back surface of the front plate 112 is adhered and attached on the adhesive member 116. The door frame 111 is also formed with an inner convex edge portion 115 and a storage portion 117 for accommodating an operation portion and a handle as a structure. The storage portion 117 is opened so as to communicate with the opening 118 on one side surface of the door frame 111.

In the space 120 inside the door frame 111, a molded heat insulating material 121 previously molded into a shape matching the shape of the space 120 is arranged. On the front side of the molded heat insulating material 121, a recess 122a recessed in a shape corresponding to the storage portion 117 on the door frame 111 side is formed, and the peripheral edge portion of the front surface plate 112 on the inner front surface of the door frame 111 is formed. A convex step portion 122b having a shape that fits into the hole portion 119 formed inside the convex edge portion 115 to be supported and fills the hole portion 119 is also formed, and further, the front surface of the vacuum heat insulating material 126 and the structure 117. A thin-walled portion 122c is also formed so as to intervene between the rear side surface. Further, around the back surface side of the molded heat insulating material 121, a wall portion 123a for shallowly fitting and positioning the plate-shaped vacuum heat insulating material 126 and protecting the surroundings is formed, and this wall portion The inner side surrounded by 123a is a recess 123b. The protective sheet 125 is inserted into the recess 123b of the molded heat insulating material 121 and adhered to the back surface side of the molded heat insulating material 121, and the vacuum heat insulating material 126 is further fitted and adhered to the protective sheet 125 in layers. Those in which the protective sheet 125 and the vacuum heat insulating material 126 are bonded to the molded heat insulating material 121 are referred to as the heat insulating material assembly 127. The heat insulating material assembly 127 is incorporated in the front opening 131 of the inner frame 130 of the refrigerator door 101. That is, it is incorporated inside the frame portion 130a of the inner frame 130.

According to the refrigerator door 101 of the present embodiment, the door frame is formed in the recess 122 formed for the storage portion 117 of the structure such as the handle or the operation input portion of the molded heat insulating material 121 seen in FIGS. 11 and 12 in the assembly. The storage portion 117 of the 111 is fitted, and the molded heat insulating material 121 is interposed between the storage portion 117 and the vacuum heat insulating material 126 so that the storage portion 117 does not come into direct contact with the vacuum heat insulating material 126. Therefore, it is possible to prevent the vacuum heat insulating material 126 from coming into contact with the protrusions and burrs of the door frame 111 and being torn to impair the heat insulating function, and to realize a refrigerator door having excellent heat insulating performance.

Further, in the hole portion 119 formed inside the inner convex edge portion 115 that supports the peripheral edge portion of the front surface plate 112 on the inner front surface of the door frame 111, a convex step portion 122b formed in advance on the surface of the molded heat insulating material 121 is provided. It enters and fills the hole 119, and the back surface of the front plate 112 is supported by the inner convex edge portion 115 and the convex step portion 122b to improve the heat insulating property of the hole portion 119 and from the back surface of the front plate 112. Support can be stabilized. In addition, instead of forming the convex step portion 122b on the surface of the molded heat insulating material 121 in advance, a relatively flexible material is adopted as the molded heat insulating material 121, and the convex step portion 122b is formed inside the inner convex edge portion 115 of the door frame 111. The molded heat insulating material 121 is pressed against the hole portion 119 to be formed and deformed to enter the hole portion 119, and the back surface of the front plate 112 is also deformed to the convex edge portion 115 by filling the hole portion 119. It can be supported on the surface by the convex step portion formed by the above, the heat insulating property of the hole portion 119 can be enhanced, and the support from the back surface of the front plate 112 can be stabilized.

[Second Embodiment]
The refrigerator door 101 of the second embodiment will be described with reference to FIGS. 16 to 19. The feature of this embodiment is the molded heat insulating material 121. The protective sheet 125 and the vacuum heat insulating material 126 are the same as those in the first embodiment, and the same or similar reference numerals as those in the first embodiment are the same or similar members.

The molded heat insulating material 121 is formed with a notch 122A having a shape that surrounds the periphery of the structure in a portion corresponding to the recess 122a of the first embodiment. The thickness of the cut end of the cutout portion 122A is slightly thicker than the thickness of the structure, and the vacuum heat insulating material 126 is assembled to the door base 135 with the vacuum heat insulating material 126 arranged in the recess 123b as described later, and the door frame 111 is assembled from the front side. In the attached state, the vacuum heat insulating material 126 is prevented from directly contacting the structure and its protrusions.

As shown in FIG. 17, the inner frame 130 is formed with a frame notch 141 corresponding to a portion where the notch 122A comes when the molded heat insulating material 121 is incorporated. Further, as shown in FIG. 18, the door frame 111 is formed with an insertion hole 142 at a position corresponding to the frame notch 141 of the inner frame 130.

Next, the structure of the refrigerator door 101 of the present embodiment will be described together with how to assemble the refrigerator door 101. It should be noted that the assembling method is an example, and assembling by another method is also possible, and the assembling method is not limited to the illustrated one.

The molded heat insulating material 121, the protective sheet 125, and the vacuum heat insulating material 126 having the shape and structure shown in FIG. 16 are prepared, and the middle frame 130 shown in FIG. 17 and the door frame 111 shown in FIG. 18 are prepared. Then, as shown in FIG. 17, the vacuum heat insulating material 126 is inserted into the bottom surface 132 of the inner frame 130, then the protective sheet 125 is inserted and adhered to the vacuum heat insulating material 126, and then the molded heat insulating material 121 is attached. Insert and adhere to the protective sheet 125. In this way, as shown in FIG. 18, the door base 135 that comes inside the refrigerator 1 is assembled. In the door substrate 135, the cutout portion 122A of the molded heat insulating material 121 comes to the position of the frame cutout portion 141 of the inner frame 130 and communicates with the door base 135. Subsequently, as shown in FIG. 18, the door frame 111 is assembled to the front surface of the door base 135. In this way, the assembly of the refrigerator door 101 of the present embodiment shown in FIG. 19 is completed.

As shown in FIG. 19, in the completed refrigerator door 101, the insertion hole 142 formed in the door frame 111 communicates with the frame notch 141 of the inner frame 130 and the notch 122A of the molded heat insulating material 121. become. Therefore, when assembling a box-shaped electronic component such as the operation input unit 51 shown in FIGS. 1 and 2 to the refrigerator door 101, the box-shaped operation input unit 51 is cut out from the insertion hole 142 of the door frame 111. It can be inserted into the portion 122A and installed directly. Then, during or after the assembling work, the protrusions and other sharp parts of the structure such as the operation input unit 51 shown in FIGS. 1 and 2 come into direct contact with the vacuum heat insulating material 126 to form the vacuum heat insulating material 126. There is no risk of damage.

Also in the second embodiment, the cutout portion 122A of the molded heat insulating material 121 at the back of the insertion hole 142 can be used as a handle for the user to insert and pull out the hand as it is. It is also possible to insert and install the handle unit.

[Third Embodiment]
Next, a structural example of the relationship between the capacitance type operation input unit 51 and the door 22 will be described with reference to FIGS. 1, 2, 20, and 21. FIG. 20 shows an example of modification of the door frame 111, which is particularly characteristic of the storage unit 117, and FIG. 21 is a diagram in which the capacitance type operation input unit 51 having a capacitance type electrode or the like is housed in the storage unit 117. The cross-sectional view of the right door 22 of the refrigerating room in 1 is shown. The members that are the same as or similar to those of the first and second embodiments are shown using the same or similar reference numerals as those used in those embodiments.

As shown in FIG. 20, the storage portion 117 of the door frame 111 is formed with an opening 117a at a position facing the front plate 112. Others are the same as the door frame 111 of the first embodiment shown in FIG. 5, and the same members are indicated by the same reference numerals.

The left door frame 111a shown in FIG. 21 is a decorative portion on the left side provided in the vertical direction of the door 22 (vertical direction on the paper surface in FIG. 21), and the right door frame 111b is a right side provided in the vertical direction of the door 22. It is a decoration part of. As shown in FIG. 21, one end of the front plate 112 is not completely covered by the left door frame 111a, and is exposed from the left door frame 111a in a substantially exposed state. Is. An R surface is formed on the front side portion of the end side surface of the front plate 112, and the shape is not a right angle. This R surface is, for example, a 1/4 circumferential R surface.

As shown in FIG. 21, an opening 118 is provided on the side surface of the left door frame 111a. The opening 118 is a through hole, and is provided for inserting the substrate 51a constituting the operation input unit 51 into the storage unit 117 from the outside of the left door frame 111a. The substrate 51a is equipped with a capacitance type electrode switch 51b and a communication means 51c for communicating information on the refrigerator to the outside and receiving other information from the outside. The storage portion 117 is integrally formed with the left door frame 111a to form a box shape, is formed extending from the inner convex edge portion 115, and is provided with an opening 117a on the front surface. The storage portion 117 is a member that constitutes a storage portion capable of storing the substrate 51a, and the storage portion can be sealed by providing a lid on the opening 118 and closing the storage portion 118 with the lid. Condensation can be prevented by providing a metal such as aluminum having good thermal conductivity around the storage portion 117 or by arranging a reinforcing metal inside.

The substrate 51a of the operation input unit 51 is pressed against the back surface 112M of the front plate 112 from the storage unit 117 side via the opening 117a by using an elastic means 51d such as a spring, so that the substrate 51a is in close contact with the back surface 112M. It is designed to hold. The substrate 51a is fixed at a position different from the inner convex edge portion 115 that serves as the support portion of the front plate 112.

By forming the opening 117a in the storage portion 117 in this way, the substrate 51a having the capacitance type switch 51b is formed on the back surface 112M of the front plate 112, avoiding the inner convex edge portion 115 of the left door frame 111a. Can be fixed in close contact. Therefore, the capacitance type switch 51b can be arranged by pressing it against the back surface 112M of the front plate 112 without leaving a gap, so that the user can turn on / off the capacitance type switch 51b from the front surface of the front plate 112. Can be done reliably.

Further, as a method of pressing the capacitance type switch 51b against the back surface 112M of the front plate 112 without leaving a gap, a guide means for moving the substrate 51a from the rear to the front may be provided instead of the elastic means, for example, storage. The portion may be inclined so as to be narrowed toward the insertion direction of the substrate, or the protrusion provided on the substrate 51a may be inserted into the guide groove provided in the storage portion to be guided and pressed.

In addition, the substrate 51a also transmits an infrared light receiving unit for detecting the environmental condition around the refrigerator, an operation button name, a cooling function name, an LED indicator lamp that transparently displays the cooling intensity, etc., and a changing numerical value such as a temperature value. A 7-segment LED display device or the like for displaying may be provided.

Further, the substrate 51a may be arranged in a support container that supports the substrate, and an LED that is a light emitting means may be arranged in the support container so that the LED emits light from the back surface of the substrate.

The capacitance type switch may be integrated by arranging electrodes on the front surface of the LED substrate arranged on the back surface, and may be provided on another substrate separately from the substrate on which the LED is arranged. May be good. The substrate may be an elastic film-like transparent film provided with capacitance type switch electrodes. Then, the LED can be arranged on the back surface of the transparent electrode, and light can be emitted from the back side of the electrode.

As described above, according to the refrigerator door 101 of the present embodiment, the door frame 111, the front plate 112 attached to the front side of the door frame 111, and the front surface thereof face the back surface of the front plate 112 in the door frame 111. By the structure 117 arranged so as to be, the flat plate vacuum heat insulating material 126 arranged on the rear surface side of the structure 117, the front surface of the vacuum heat insulating material 126, the back surface of the front plate 112, and the outer surface of the structure 117. It is a structure provided with the molded heat insulating material 121 arranged in the enclosed space 120. As a result, the molded heat insulating material 121 and the vacuum heat insulating material 126 can be arranged in the space 120 inside the door frame 111 with substantially no gap, and the heat insulating property of the refrigerator door 101 can be improved.

Further, in the refrigerator door 101 of the present embodiment, a plastic heat insulating material preformed into a predetermined shape that can be fitted into the space 120 is used in the molded heat insulating material 121, so that the plastic heat insulating material can be arranged in the space 120. It can be performed reliably, the manufacturing time can be shortened, and the heat insulating characteristics can be improved.

Further, with the molded heat insulating material 121 arranged in the space 120, the structure 117 is fitted into the recess 122a of the molded heat insulating material 121, and between the front surface of the vacuum heat insulating material 126 and the rear side surface of the structure 117 facing the vacuum heat insulating material 126. By forming the structure in which the thin portion 122c of the molded heat insulating material 121 is interposed, the vacuum heat insulating material 126 is surely prevented from being caught by the sharp corners and burrs of the structure 117 and damaged, and the heat insulating characteristics are impaired. can.

Further, an inner convex edge portion 115 for supporting the peripheral edge portion of the front plate 112 from the back surface side is formed on the inner side surface of the door frame 111, and the back surface peripheral edge portion of the front plate 112 is supported from the back surface side by the inner convex edge portion 115. The front portion of the molded heat insulating material 121 is provided with a convex step portion 122b that fills the hole portion 119 surrounded by the inner peripheral surface of the inner convex edge portion 115, and the molded heat insulating material 121 is provided with the front surface of the vacuum heat insulating material 126. It is inserted into the space 120 between the front surface plate 112 and the back surface, and the convex step portion 122b is made to fill the hole portion 119 surrounded by the inner peripheral surface of the inner convex edge portion 115, so that the front side and the convex portion of the inner convex edge portion 115 are convex. The back surface of the front plate 112 can be surface-supported by the front surface portion of the step portion 122b, whereby the front surface plate 112 can be surface-supported by the inner convex edge portion 115 and the convex step portion 122b from the back surface side thereof. The front plate 112 can be securely attached.

Also in the present embodiment, the inner surface of the door frame 111 is formed with the inner convex edge portion 115 that supports the peripheral edge portion of the front plate 112 from the back surface side, and the back surface peripheral portion of the front plate 112 is the inner convex edge portion 115. The molded heat insulating material 121 is inserted into the space 120 between the front surface of the vacuum heat insulating material 126 and the back surface of the front plate 112, and the hole portion 119 is surrounded by the inner peripheral surface of the inner convex edge portion 115. It is also possible to deform the front surface portion of the molded heat insulating material 121 to form a convex step portion 122b so as to fill the above. The surface can be supported, the front plate 112 can be securely attached, and the preformed shape of the molded heat insulating material 121 can be simplified to improve productivity.

Further, in each of the above embodiments, the refrigerator 1 provided with the double doors 21 and 22 has been described, but as a simple structure, one single door that opens to the left or opens to the right is arranged in front of the refrigerator compartment. As for the refrigerator having the above-described configuration, the one of the above-described embodiment can be adopted as the structure of the door.

1 Refrigerator 11 Cabinet 12 Refrigerating room 21 Left door 21A Handle 22 Right door 22A Handle 23-26 Door 23A-26A Handle 51 Operation input unit 101 Door 111 Door frame 112 Front plate 115 Inner convex edge 117 Storage unit 117 Opening 118 frame Opening 119 Hole 121 Molded heat insulating material 122a Recessed part 122b Convex step part 122c Thin wall part 122A Notch part 125 Protective sheet 126 Vacuum heat insulating material 127 Heat insulating material assembly 130 Middle side frame 135 Door base 141 Frame notch 142 Insertion hole

Claims (4)

Door frame and
The front plate attached to the door frame and
A structure arranged in the door frame so that its front surface faces the back surface of the front plate.
The vacuum heat insulating material arranged on the rear surface side of the structure and
So as to contact the rear surface of the front and the structure of the previous SL vacuum insulating material, and a deployed molded heat insulating material between the structure and the vacuum heat insulating material,
A refrigerator door having an opening communicating with the structure on a side surface of the door frame. The refrigerator door according to claim 1, wherein a recess into which the front surface of the vacuum heat insulating material is fitted is formed on the back surface of the molded heat insulating material. The refrigerator door according to claim 1 or 2, wherein the molded heat insulating material has a thin-walled portion between the vacuum heat insulating material and the structure. The refrigerator door according to any one of claims 1 to 3, wherein the front surface of the vacuum heat insulating material is adhered to the back surface of the molded heat insulating material.

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