JP6571911B2 - Refrigerator door - Google Patents

Description

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

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

JP 2011-58787 A JP 2012-207857 A

  The present invention has been made in view of the above technical problems, and can reduce the door thickness, maintain or enhance the heat insulation, simplify the assembly process, and prevent damage to the vacuum heat insulating material. It aims at providing the refrigerator door provided with.

The refrigerator door of the embodiment includes a door frame, a front plate attached to the door frame, a structure disposed in the door frame so that a front surface thereof faces a back surface of the front plate, and the structure A flat vacuum heat insulating material disposed on the rear surface side of the body, a front surface of the vacuum heat insulating material, a back surface of the front plate, and a space surrounded by the outer surface of the structure, and corresponds to the structure and a preformed molded heat insulator into a shape having a recess or notch shape before assembly, viewed write the structure fit into the recess or the cutaway portion, the vacuum on the back side of the molded heat insulator A recess into which the heat insulating material is fitted is formed . Alternatively, the refrigerator door of the embodiment includes a door frame, a front plate attached to the door frame, and a structure disposed in the door frame such that a front surface thereof faces the back surface of the front plate, A flat vacuum heat insulating material disposed on the rear surface side of the structure, and a space surrounded by a front surface of the vacuum heat insulating material, a rear surface of the front plate, and an outer surface of the structure; A molded heat insulating material pre-molded before assembling into a shape having a correspondingly shaped recess or notch, the structure is fitted into the recess or notch, and the front plate is placed on the inner surface of the door frame. An inner convex edge portion that supports the peripheral edge portion of the front insulating plate from the rear surface side is formed, and the rear peripheral edge portion of the front plate is supported from the rear surface side by the inner convex edge portion. The space surrounded by the inner peripheral surface of the edge And the molded heat insulating material is inserted between the front surface of the vacuum heat insulating material and the back surface of the front plate, and the inner surface of the inner convex edge portion on the convex step portion. The space surrounded by the surface is filled, and the back surface of the front plate is supported by the front surface side of the inner convex edge portion and the front surface portion of the convex step portion.

The front view of the refrigerator which assembled | attached the refrigerator door of 1st Embodiment. The perspective view of the state which opened the refrigerator compartment door of the refrigerator which assembled | attached the refrigerator door of 1st Embodiment. The perspective view of the refrigerator door of 1st Embodiment. The perspective view seen from the back surface side of the refrigerator door of 1st Embodiment. The disassembled perspective view of the door frame and 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 shaping | molding heat insulating material in the refrigerator door of 1st Embodiment. The perspective view seen from the front side of the shaping | molding heat insulating material in the refrigerator door of 1st Embodiment. The disassembled perspective view which shows the assembly method of the shaping | molding heat insulating material in the refrigerator door of 1st Embodiment, a protection sheet, and a vacuum heat insulating material. The perspective view of the heat insulating material assembly in the refrigerator door of 1st Embodiment. The disassembled perspective view which shows the method of incorporating a heat insulating material assembly in the inside frame in the refrigerator door of 1st Embodiment. The perspective view of the door base | substrate in the refrigerator door of 1st Embodiment. The perspective view seen from the back side of the door base in the refrigerator door of a 1st embodiment. The disassembled perspective view which shows the method of attaching a door base | substrate to the door frame in the refrigerator door of 1st Embodiment. Sectional drawing which shows the part of the front plate in the refrigerator door of 1st Embodiment, a door frame, and a heat insulating material assembly. The disassembled perspective view which shows the assembly method of the shaping | molding heat insulating material in the refrigerator door of 2nd Embodiment, a protection sheet, and a vacuum heat insulating material. The disassembled perspective view which shows the assembly method of the vacuum heat insulating material with respect to an inner side frame, a protection sheet, and a shaping | molding heat insulating material in the refrigerator door of 2nd Embodiment. The disassembled perspective view which shows the assembly method of the door frame with respect to a door base | substrate in the refrigerator door of 2nd Embodiment. The perspective view of the refrigerator door of 2nd Embodiment. The disassembled perspective view of the door frame part in the refrigerator door of 3rd Embodiment. Sectional drawing which shows the part of the front plate in the refrigerator door of 3rd Embodiment, a door frame, and a heat insulating material assembly.

  Hereinafter, embodiments will be described in detail with reference to the drawings. In addition, about the same or similar structural member, it demonstrates using the same or similar code | symbol.

[First Embodiment]
1 and 2 show a refrigerator 1. The refrigerator 1 includes a cabinet 11 that is a refrigerator main body. The cabinet 11 includes a refrigerated room 12, a vegetable room 13, a switching room 14 and a freezer room 15 capable of switching the set temperature in the cabinet 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, 22 are attached so as to open and close the left and right ends at the hinges 31, 32 in a double door manner. The vegetable room 13, the switching room 14, the freezing room 15, and the ice making room 16 are provided with drawer-type doors 23, 24, 25, and 26, respectively. Although not shown in the drawing, the refrigeration evaporator for cooling the refrigerator compartment 12 and the vegetable compartment 13 is arranged on the back of the vegetable compartment 13. Although not shown, a freezing evaporator for cooling the switching chamber 14, the freezing chamber 15, and the ice making chamber 16 is arranged. Furthermore, on the back side of the vegetable compartment 13, a control unit comprising a microcomputer for controlling the refrigerator 1 is also arranged. A rotating partition 61 for maintaining a sealing state with the right door 22 is provided at a right end portion of the left door 21, that is, a portion facing the left end portion of the right door 22 in the closed state. .

  The drawer 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 opening of the door frame that opens to the front. 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 in the 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 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 an environmental condition around the refrigerator, a home button, a touch on the home button, and transparently displays an operation button name, a cooling function name, a cooling intensity, and the like. An LED indicator, a 7-segment LED display device that transparently displays changing numerical values such as a temperature value, and the like are provided. The doors 21 to 26 are respectively provided with handles 21A to 26A.

  Hereinafter, when 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 need not be particularly distinguished from each other. Is referred to as the refrigerator door 101 and its structure will be described. In addition, about the vertical / horizontal dimension ratio, although it is different corresponding to each of the doors 21 to 26 of the refrigerator 1 shown in FIGS. 1 and 2, in the following, the dimension ratio is ignored and mainly the internal structure. explain.

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

  Below, this refrigerator door 101 is demonstrated with the manufacturing process. However, the order of the manufacturing process is not particularly limited, but 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 inward 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 portion, and a double-sided tape is formed on the front surface thereof. Such a bonding member 116 is bonded, and the back surface of the front plate 112 is bonded onto the bonding member 116. Note that an adhesive may be used for the adhesive member 116. Further, the door frame 111 may be divided for each side, and a groove may be provided on each side, and the front plate 112 may be fitted into 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 formed by a three-dimensional groove space for storing an operation portion and a handle as a structure. ing. The storage portion 117 is opened on one side surface of the door frame 111. With the opening 118, the operation input unit 51 and the components of the grips 21A and 22A, which are electrical components shown in FIGS. 1 and 2, can be inserted into the storage unit 117 from the opening 118. In the case of a handle, it is not necessary to insert a part, and the handle 21A and 22A shown in FIGS. 1 and 2 may be obtained by inserting a hand into the opening 118 while the groove space is maintained.

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

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

  As shown in FIGS. 9 and 10, a protective sheet 125 is put in the concave portion 123 b on the back surface side of the molded heat insulating material 121 and bonded to the back surface side of the molded heat insulating material 121, and a vacuum heat insulating material 126 is further fitted and bonded in layers. To do. As the protective sheet 125, a PET film or a urethane sheet can be used. The protective sheet 125 is used when there is a risk of being damaged by some protrusion or protrusion if the vacuum heat insulating material 126 is directly overlapped and adhered to the back surface of the molded heat insulating material 121, and there is no risk of damage. If not necessary, it may not be used. Here, those obtained by bonding the protective sheet 125 and the vacuum heat insulating material 126 to the molded heat insulating material 121 are 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 inside frame 130 of the refrigerator door 101. .

  The middle frame 130 includes a frame portion 130a, a flange portion 130a1 that extends inward from the frame portion 130a, a bank portion 130b that extends inside the refrigerator compartment, and a bottom surface portion 132 that is recessed by one step from the flange portion 130a1. Between the bank portion 130b and the frame portion 130a, there is provided a fixing portion 130c having a protruding shape protruding outward over the entire circumference.

  The above-mentioned heat insulating material assembly 127 is incorporated in the front opening 131 of the middle frame 130 on the vacuum heat insulating material 126 side. At that time, the wall portion 123a around the door frame 121 enters the inside of the frame portion 130a of the middle frame 130, and the front end surface of the wall portion 123a comes into contact with the flange portion 130a1. Further, the back surface side (the lower surface side in FIGS. 11 and 12) of the vacuum heat insulating material 126 protruding one step from the wall portion 123a is bonded 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 middle frame 130, and the back surface side (the lower surface side in FIGS. 11 and 12) of the vacuum heat insulating material 126 is placed on the bottom surface 132 of the middle frame 130. The door base body 135 shown in FIGS. 12 and 13 is assembled by bonding. Here, also when the back surface side of the vacuum heat insulating material 126 is bonded to the bottom surface portion 132 of the middle 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 assembled in this way from the front side. That is, the frame portion 130 a of the middle frame 130 is inserted inside the door frame 111, and the fixing portion 130 c protruding from the outer periphery of the middle frame 130 is brought into contact with the front end surface of the door frame 111 to be positioned and fixed. Thus, the assembly of the refrigerator door 101 shown in the perspective views of FIGS. 3 and 4 and the cross-sectional view of FIG. 15 is completed.

  As shown in FIGS. 3, 4, and 15, the refrigerator door 101 according to the present embodiment is made of glass or plastic so that the front opening is closed by the front opening of the front door frame 111. A front plate 112 having a decorative decorative plate is attached. The door frame 111 is a frame body, and an inward convex edge portion 115 is formed so as to protrude inwardly at a position lower by the thickness of the front plate 112 on the inner side surface of the front opening portion or a half thereof. 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 onto the adhesive member 116. The door frame 111 is also formed with an inner convex edge 115 and a storage portion 117 for storing an operation portion and a handle as a structure. The storage portion 117 is open 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 formed into a shape that matches the shape of the space 120 is disposed. On the front side of the molded heat insulating material 121, a concave portion 122 a is formed that is recessed in a shape corresponding to the storage portion 117 on the door frame 111 side, and the peripheral portion of the front plate 112 on the front surface inside the door frame 111 is formed. A convex stepped portion 122b is formed to fit into the hole 119 formed inside the supporting convex edge 115 and fill the hole 119, and the front surface of the vacuum heat insulating material 126 and the structure 117 A thin portion 122c is also formed so as to be interposed between the rear side surface. Furthermore, a wall portion 123a is formed around the back surface of the molded heat insulating material 121 to position the plate-like vacuum heat insulating material 126 by fitting it shallowly and protect the periphery. The inner side surrounded by 123a is a recess 123b. A protective sheet 125 is put in the concave portion 123 b of the molded heat insulating material 121 and bonded to the back surface side of the molded heat insulating material 121, and a vacuum heat insulating material 126 is further fitted and bonded to the protective sheet 125. Those obtained by bonding the protective sheet 125 and the vacuum heat insulating material 126 to the molded heat insulating material 121 are referred to as a heat insulating material assembly 127. The heat insulating material assembly 127 is incorporated in the front opening 131 of the inside frame 130 of the refrigerator door 101. That is, it is incorporated inside the frame portion 130 a of the middle frame 130.

  According to the refrigerator door 101 of the present embodiment, the door frame is formed in the concave portion 122 formed for the storage portion 117 of the structure such as the handle of the molded heat insulating material 121 or the operation input portion as seen in FIGS. The storage portion 117 of 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 directly contact 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 or burrs of the door frame 111 and breaking the heat insulating function, thereby realizing a refrigerator door having excellent heat insulating performance.

  In addition, in the hole portion 119 formed inside the inner convex edge portion 115 that supports the peripheral portion of the front face plate 112 inside the door frame 111, a convex step portion 122b formed in advance on the surface of the molded heat insulating material 121 is formed. The hole 119 is filled in and the back surface of the front plate 112 is supported by the inner convex edge portion 115 and the convex stepped portion 122b to enhance the heat insulation of the hole portion 119 and from the back surface of the front plate 112. Can be stabilized. Instead of forming the convex step 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 formed inside the inner convex edge 115 of the door frame 111. The formed heat insulating material 121 is pressed against the hole portion 119 to be deformed to enter the hole portion 119 and fill the hole portion 119 so that the rear surface of the front plate 112 is deformed with the convex edge portion 115. It is possible to support the surface from the back surface of the front plate 112 while improving the heat insulating property of the hole portion 119.

[Second Embodiment]
The refrigerator door 101 of 2nd Embodiment is demonstrated using FIGS. 16-19. The feature of this embodiment resides in 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.

  In the molded heat insulating material 121, a cutout portion 122A having a shape surrounding the structure is formed in a portion corresponding to the concave portion 122a of the first embodiment. The cutout 122A is slightly thicker than the structure, and is assembled to the door base 135 with the vacuum heat insulating material 126 disposed in the recess 123b as described later, and the door frame 111 is assembled from the front side. In this state, the vacuum heat insulating material 126 is prevented from coming into direct contact with the structure and its protrusions.

  As shown in FIG. 17, the middle frame 130 has a frame notch 141 corresponding to the location where the notch 122 </ b> A comes when the molded heat insulating material 121 is incorporated. As shown in FIG. 18, an insertion hole 142 is formed in the door frame 111 at a location corresponding to the frame cutout portion 141 of the middle frame 130.

  Next, the structure of the refrigerator door 101 of this Embodiment is demonstrated with the assembly method. In addition, the assembly method is an illustration, Comprising: The assembly by another method is also possible, and it is not limited to the thing of illustration.

  A molded heat insulating material 121, a protective sheet 125, and a vacuum heat insulating material 126 having the shape and configuration shown in FIG. 16 are prepared, and a middle frame 130 shown in FIG. 17 and a 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 portion 132 of the middle frame 130, and then the protective sheet 125 is inserted and adhered to the vacuum heat insulating material 126. Insert and adhere to the protective sheet 125. Thus, as shown in FIG. 18, the door base body 135 that comes inside the refrigerator 1 is assembled. In the door base 135, the cutout portion 122 </ b> A of the molded heat insulating material 121 comes and communicates with the position of the frame cutout portion 141 of the inner frame 130. Subsequently, as shown in FIG. 18, the door frame 111 is assembled to the front surface of the door base 135. Thus, 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 cutout portion 141 of the inner frame 130 and the cutout portion 122 </ b> A of the molded heat insulating material 121. become. Accordingly, when a box-shaped electronic component such as the operation input unit 51 shown in FIGS. 1 and 2 is assembled to the refrigerator door 101, the box-shaped operation input unit 51 is notched from the insertion hole 142 of the door frame 111. It can be installed directly into the part 122A. During and 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 directly come into contact with the vacuum heat insulating material 126 to attach the vacuum heat insulating material 126. There is no risk of damage.

  Also in the second embodiment, the notch 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 a 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 a modified example of the door frame 111 that is particularly characterized by the storage unit 117, and FIG. 21 is a diagram in which a capacitive operation input unit 51 such as a capacitive electrode is stored in the storage unit 117. 1 shows a cross-sectional view of the refrigerator compartment right door 22 in FIG. In addition, about the member which is the same as that of 1st, 2nd embodiment, or similar, it has shown using the code | symbol same or similar to the code | symbol used in those embodiment.

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

  The left door frame 111 a shown in FIG. 21 is a left decorative part provided in the vertical direction of the door 22 (the vertical direction in FIG. 21), and the right door frame 111 b is a right side provided in the vertical direction of the door 22. The decoration part. As shown in FIG. 21, one end portion of the front plate 112 is not entirely covered by the left door frame 111a but is exposed from the left door frame 111a. It is. An R surface is formed on the front portion of the side surface of the end portion of the front plate 112, and is not a right-angled shape. 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 to insert the substrate 51a constituting the operation input unit 51 into the storage unit 117 from the outside of the left door frame 111a. The board 51a is equipped with a communication means 51c that communicates information on the capacitance type electrode switch 51b and the refrigerator to the outside and receives other information from the outside. The storage portion 117 is integrally formed with the left door frame 111a, has a box shape, is formed to extend from the inner convex edge portion 115, and is provided with an opening portion 117a on the front surface. The storage unit 117 is a member constituting a storage unit that can store the substrate 51a. The storage unit 117 can be configured to be sealed by providing a lid in the opening 118 and closing the cover with the lid. Condensation can be prevented by providing a metal such as aluminum having good heat conductivity around the storage portion 117 or by disposing a reinforcing metal inside.

  The substrate 51a of the operation input unit 51 is in close contact with the back surface 112M by pressing against the back surface 112M of the front plate 112 from the storage unit 117 side through the opening 117a using elastic means 51d such as a spring. To hold. The substrate 51a is fixed at a position different from the inner convex edge 115 serving as a support for 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 avoids the inner convex edge portion 115 of the left door frame 111a and is formed on the back surface 112M of the front plate 112. It can be fixed tightly. For this reason, since the capacitance type switch 51b can be pressed against the back surface 112M of the front plate 112 without leaving a gap, the user can turn on and off the capacitance type switch 51b from the 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, guide means for moving the substrate 51a from the rear to the front may be provided instead of the elastic means. The portion may be inclined so as to narrow toward the substrate insertion direction, or the protrusion provided on the substrate 51a may be inserted into a guide groove provided in the storage portion and guided to be pressed.

  In addition to this, the infrared light receiving part for detecting the environmental condition around the refrigerator, the operation button name, the cooling function name, the LED display light for transparently displaying the cooling intensity, and the like, the numerical value changing such as the temperature value is transmitted to the substrate 51a. A 7-segment LED display device or the like for display may be provided.

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

  In addition, the capacitance type switch may be integrated by arranging electrodes on the surface of the LED substrate disposed on the back surface, and provided on another substrate separately from the substrate on which the LED is disposed. Also good. The substrate is preferably provided with an electrode of a capacitive switch on a film-like transparent film having elasticity. If it does so, LED can be arrange | positioned on the back surface of a transparent electrode, and it can be made to light-emit from the back side of an electrode.

  Thus, 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 of the door frame 111 faces the back surface of the front plate 112. The structure 117 arranged in such a manner, the flat 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. This is a structure provided with a molded heat insulating material 121 arranged in the enclosed space 120. Thereby, the shaping | molding heat insulating material 121 and the vacuum heat insulating material 126 can be arrange | positioned in the space 120 inside the door frame 111 without a substantially gap, and the heat insulation of the refrigerator door 101 can be improved.

  Moreover, in the refrigerator door 101 of this Embodiment, the plastic heat insulating material previously shape | molded by the predetermined | prescribed shape which can be inserted in the said space 120 is used for the shaping | molding heat insulating material 121, and, thereby, arrangement | positioning to the space 120 is carried out. This can be done reliably, shortening the manufacturing time and improving the heat insulation characteristics.

  Further, with the molded heat insulating material 121 disposed in the space 120, the structure 117 is fitted into the recess 122 a of the molded heat insulating material 121, and between the rear surface of the structure 117 facing the front surface of the vacuum heat insulating material 126. The structure in which the thin-walled portion 122c of the molded heat insulating material 121 is interposed between the vacuum heat insulating material 126 and the heat insulating property is surely prevented from being damaged by being caught by the sharp corners or burrs of the structure 117. it can.

  Further, an inner convex edge portion 115 is formed on the inner side surface of the door frame 111 to support the peripheral portion of the front plate 112 from the rear surface side, and the rear peripheral portion of the front plate 112 is supported from the rear surface side by the inner convex edge portion 115. The front surface of the molded heat insulating material 121 is provided with a convex stepped portion 122b that fills the hole 119 surrounded by the inner peripheral surface of the inner convex edge 115, and the molded heat insulating material 121 is connected to the front surface of the vacuum heat insulating material 126. It is inserted into the space 120 between the back surface of the front plate 112 and the convex stepped portion 122b is filled with a hole 119 surrounded by the inner peripheral surface of the inner convex edge portion 115 so that the front side of the inner convex edge portion 115 is convex. The front surface of the step plate 122b can be structured to support the back surface of the front plate 112, whereby the front plate 112 is supported by the inner convex edge portion 115 and the convex step portion 122b from the back surface side. Can be installed securely. It can become.

  In the present embodiment also, the inner convex edge portion 115 that supports 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 rear peripheral edge portion of the front plate 112 is used as 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 surrounded by the inner peripheral surface of the inner convex edge portion 115 is supported by the back surface side. It is also possible to deform the front surface portion of the molded heat insulating material 121 so as to fill it with the convex stepped portion 122b. In this case also, the front plate 112 is formed by the inner convex edge portion 115 and the convex stepped portion 122b from the rear surface side. The surface can be supported, the front plate 112 can be securely attached, and the shape of the molded heat insulating material 121 can be simplified in advance to improve the productivity.

  In each of the above embodiments, the refrigerator 1 having the double doors 21 and 22 has been described. However, as a simple structure, a single door that is left-opened or right-opened in front of the refrigerator compartment is arranged. The refrigerator having the above-described configuration can also employ the above-described embodiment as the door structure.

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

Claims (10)

Door frame,
A front plate attached to the door frame;
A structure disposed in the door frame such that the front surface thereof faces the back surface of the front plate;
A flat vacuum heat insulating material disposed on the rear surface side of the structure,
It is disposed in a space surrounded by the front surface of the vacuum heat insulating material, the back surface of the front plate, and the outer surface of the structure, and is molded in advance into a shape having a recess or a notch having a shape corresponding to the structure. With molded insulation
See write fitted into the structure the recess or the notch,
A refrigerator door, wherein a recess for fitting the vacuum heat insulating material is formed on the back side of the molded heat insulating material . Door frame,
A front plate attached to the door frame;
A structure disposed in the door frame such that the front surface thereof faces the back surface of the front plate;
A flat vacuum heat insulating material disposed on the rear surface side of the structure,
It is disposed in a space surrounded by the front surface of the vacuum heat insulating material, the back surface of the front plate, and the outer surface of the structure, and is molded in advance into a shape having a recess or a notch having a shape corresponding to the structure. With molded insulation
The structure fits into the recess or the notch,
Forming an inner convex edge that supports the peripheral edge of the front plate from the back side on the inner surface of the door frame, and supporting the rear peripheral edge of the front plate from the back side by the inner convex edge;
The front surface portion of the molded heat insulating material is provided with a convex step portion that fills the space surrounded by the inner peripheral surface of the inner convex edge portion,
The molded heat insulating material is inserted between the front surface of the vacuum heat insulating material and the back surface of the front plate, and the convex stepped portion is filled with the space surrounded by the inner peripheral surface of the inner convex edge portion,
A refrigerator door characterized in that the back side of the front plate is surface-supported by the front side of the inner convex edge part and the front part of the convex step part. The refrigerator door according to claim 1 or 2 , wherein the molded heat insulating material is a plastic heat insulating material previously formed into a predetermined shape. The said molded heat insulating material was made into the thickness which the rear side surface of the said structure which faces the front surface of the said vacuum heat insulating material in the said arrangement | positioning state does not contact the front surface of the said vacuum heat insulating material . The refrigerator door of any one . Forming an inner convex edge that supports the peripheral edge of the front plate from the back side on the inner side surface of the door frame, and supporting the rear peripheral edge of the front plate from the rear side by the inner convex edge,
The molded heat insulating material is inserted between the front surface of the vacuum heat insulating material and the back surface of the front plate, and the convex step portion having a shape embedded in the space surrounded by the inner peripheral surface of the inner convex edge portion is the The refrigerator door according to claim 2 , wherein the refrigerator door is formed on a front surface portion of the molded cross-sectional material . The refrigerator door according to claim 4 , wherein the front surface of the vacuum heat insulating material is bonded to the back surface of the molded heat insulating material. The refrigerator door according to any one of claims 1 to 5 , wherein a protective sheet is interposed between the back surface of the molded heat insulating material and the front surface of the vacuum heat insulating material.   The refrigerator door according to claim 1, wherein the structure is a storage unit that stores an operation unit for cooling control operation of the refrigerator.   The refrigerator door according to any one of claims 1 to 7, wherein the structure is an operation unit for cooling control operation of the refrigerator.   The refrigerator door according to claim 1, wherein the structure is a handle for opening and closing.

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