JP6305879B2 - Refrigerator door - Google Patents

Description

  The present invention relates to a refrigerator door.

  In recent years, refrigerators having a display device such as a liquid crystal display on the front surface of the door have appeared. Patent Document 1 discloses a refrigerator door that includes an operation panel having a display unit on the front surface of the door and includes a vacuum heat insulating material and a foam heat insulating material between the inner plate and the operation panel.

  Patent Document 2 discloses a technique in which a touch panel unit is arranged on the front surface of the refrigerator door, the touch panel unit is stored in a storage box, and the storage box is temporarily fixed to the front outer plate of the refrigerator door with tape or the like. It is disclosed.

JP 2004-347238 A (see FIG. 4) JP 2014-44016 A

  By the way, if the foaming insulation material is filled and foamed in a state where the storage box for storing the operation panel, touch panel, etc. is temporarily fixed to the door front plate with tape or the like, the volume expansion during foaming of the foam insulation material and the volume after cooling Due to the shrinkage, a difference is caused in the stress applied to the tape applying portion and the other portions, and there is a possibility that the boundary of the tape applying portion of the door front plate is distorted.

  A display device such as a liquid crystal display disposed on the refrigerator door tends to increase in size, and the amount of distortion increases as the area increases. On the other hand, demand for refrigerators with mirror-finished refrigerator doors that have excellent design characteristics is also expected. In this case, if the mirror surface treatment applied to the back of the door front plate is distorted, the design and merchantability are significantly impaired. It will be.

  In addition, since the amount of heat generated from the display device increases with an increase in the size of the display device, it is necessary to insulate the refrigerator so as not to affect the storage chamber, particularly in a refrigerator.

  In view of the above, the present invention securely fixes the storage cover to a predetermined position of the door front plate with the vacuum heat insulating material without temporarily fixing the storage cover for storing the display device with a tape or the like when filling and foaming the foam heat insulating material. The purpose is to provide a refrigerator door with excellent heat insulation.

  In order to achieve the above object, the present invention provides a display device installed behind a translucent door front plate and visible from the door surface through the door front plate, and a door installed behind the door front plate. Installed on the rear surface of the door front plate, foam insulation material injected between the plate and the door front plate and filled by foaming, vacuum insulation material placed between the door inner plate and the door front plate And a storage cover that forms a storage space for storing the display device, wherein the vacuum heat insulating material is disposed between the storage cover and the door inner plate, and the rear surface of the storage cover And a door inner plate.

  According to the present invention, the vacuum heat insulating material is sandwiched between the storage cover and the door inner plate, and the storage cover is pressed against the door inner plate and the door front plate from the front and rear directions via the vacuum heat insulating material. Therefore, since the foamed heat insulating material foams in a state where the movement of the storage cover is restricted at least in the front-rear direction, the storage cover is prevented from moving against the stress of the foamed heat insulating material without being temporarily fixed with tape or the like. Can do. Thereby, the storage cover can be reliably fixed at a predetermined position of the door front plate without causing distortion in the rear surface treatment of the door front plate.

It is the perspective view which looked at the outer peripheral frame part of the door of the refrigerator which is the 1st Embodiment of this invention from the front side. It is a disassembled perspective view which shows the structural member of a refrigerator door. It is a plane sectional view of a refrigerator door. It is a disassembled perspective view of the refrigerator door which is 2nd Embodiment. It is a figure which shows the support structure part in 3rd Embodiment, Comprising: (a) is a plane sectional view, (b) is a front view. It is a plane sectional view of a support structure part showing a 4th embodiment. It is a front view of the support structure part which shows 5th Embodiment. It is a front view of the support structure part which shows 6th Embodiment. It is a plane sectional view of a support structure part showing a 7th embodiment. It is a front view of the refrigerator door which shows 8th Embodiment. It is a disassembled perspective view which similarly shows the positional relationship of a refrigerator door and a support structure part. It is a disassembled perspective view of the refrigerator door which shows 9th Embodiment.

  Embodiments of the present invention will be described with reference to the drawings. The refrigerator in the present embodiment is not shown in an overall view, but, as is well known, includes a heat insulating box and a plurality of doors that can be opened and closed to cover the front of the heat insulating box. FIG. 1 is a perspective view of an outer peripheral frame portion of one of the plurality of doors as viewed from the front side. 2 is an exploded perspective view showing components of the refrigerator door, and FIG. 3 is a plan sectional view of the refrigerator door.

  As shown in the figure, the refrigerator door 1 is installed behind the light-transmitting door front plate 2 and is visible behind the door front plate 2 through the door front plate 2 and behind the door front plate 2. A foam heat insulating material 6 injected between the door inner plate 5 and the door front plate 2 and filled by foaming, and a vacuum heat insulating material 7 disposed between the door inner plate 5 and the door front plate 2; And a storage cover 8 which is installed on the rear surface of the door front plate 2 and forms a storage space in which the display device 4 is stored.

  And the edge member 10 which covers the outer periphery of the door front board 2 and the door inner board 5 is provided, and this edge member 10 comprises the side wall of the door. In the present embodiment, a frame-shaped border member 10 is formed on the outer periphery of the door, and the peripheral edges of the door front plate 2 and the door inner plate 5 are attached to the border member 10. The edge member 10 is made of a synthetic resin or metal thin plate.

  The door front plate 2 is composed of a synthetic resin plate made of acrylic or the like having translucency. The display device 4 is installed behind the door front plate. The display device 4 is visible from the door surface through the door front plate 2. The display device 4 is provided with an operation unit (not shown) that adjusts the internal set temperature and the like by touching the touch panel, and a display unit (not shown) that displays the internal temperature and the like by liquid crystal. The display unit is composed of a liquid crystal display, for example. Moreover, the operation part is comprised from the touch panel. The door front plate 2 may be entirely formed of a light-transmitting resin plate, a part of the door front plate 2 may be a light-transmitting resin plate, and the remaining portion may be another resin plate or a metal thin plate. Good.

  The door inner plate 5 is made of a synthetic resin thin plate constituting the inner surface of the door, and a storage pocket is formed inside the surrounding convex wall 5a. The periphery of the door inner plate 5 is engaged with the edging member 10, and the space surrounded by the door inner plate 5, the door front plate 2 and the edging member 10 is filled with foamed heat insulating material 6 to form a heat insulating door. It is.

  The vacuum heat insulating material 7 is a heat insulating material using a vacuum technology that enhances heat insulating performance by making the periphery of the heat insulating material a vacuum state and bringing heat conduction by gas as close to zero as possible. The vacuum heat insulating material 7 usually has a heat insulating material such as porous urethane foam or glass wool as a core material, and a metal film is externally provided around the heat insulating material to ensure a very high heat insulating property. Can do. The vacuum heat insulating material 7 is disposed between the storage cover 8 and the door inner plate 5, and is supported in the front-rear direction by the back surface of the storage cover 8 and the door inner plate 5.

  As a support form of the vacuum heat insulating material 7, a support structure 11 is formed between the vacuum heat insulating material 7 and the back surface of the storage cover 8 and between at least one of the vacuum heat insulating material 7 and the door inner plate 5. ing. In this embodiment, the structure which interposes the support structure 11 between the vacuum heat insulating material 7 and the door inner board 5 is employ | adopted. By directly pressing the vacuum heat insulating material 7 against the back surface of the storage cover 8 by the support structure 11, the vacuum heat insulating material 7 is supported so as to be sandwiched between the door inner plate 5 and the storage cover 8.

  The support structure 11 is composed of a lightweight and heat-insulating plate-like member such as expanded polystyrene. The material of the support structure is not limited to this, and any other resin, rubber, or metal can be used. Further, the weight and heat insulating properties are not particularly limited. However, since the support structure 11 is optimally light and excellent in heat insulation, it is preferable to employ a heat insulating material such as polystyrene foam as in the present embodiment.

  In the support structure 11, the pressing surface against the vacuum heat insulating material 7 is flat, and the vacuum heat insulating material 7 is uniformly supported over the entire surface. On the other hand, a concave-convex gap 12 in the front-rear direction is formed on the contact surface of the support structure 11 with the door inner plate 5. The gap 12 penetrates the support structure 11 in the vertical direction, and serves as a flow path when the foam heat insulating material 6 is injected. A foam heat insulating material 6 is injected into the gap and filled and foamed.

  In addition, in 1st Embodiment, although the structure which interposes the support structure 11 between the vacuum heat insulating material 7 and the door inner board 5 is employ | adopted, between the vacuum heat insulating material 7 and the back surface of the storage cover 8 is employ | adopted. The structure which interposes the support structure 11 may be sufficient.

  As shown in FIG. 1, the storage cover 8 is a box-like shape in which a storage space for storing the display device 4 is formed, the front side is opened, and the door front plate 2 is attached to the open surface. The storage cover 8 is fixed to the edge member 10 by adhesion or the like. The display device storage space of the storage cover 8 communicates with the insertion port 13 formed in the edging member 10, and the display device 4 can be detachably mounted from the insertion port 13. By providing the insertion port 13, the display device 4 can be replaced when the display device 4 fails. In addition, two rails 14 that run in the horizontal direction are arranged on the back surface of the storage cover 8 so that the display device 4 can be easily guided into the insertion port 13 or the storage space, and the display device 4 is connected to the front door. It can be brought into close contact with the front plate 2.

  Next, a manufacturing method will be described. The manufacturing method of the refrigerator door 1 includes the step of fixing the vacuum heat insulating material 7 to the door inner plate 5, and the storage cover 8 disposed on the door front plate 2 with the back of the door front plate 2 facing upward. The process of placing the door inner plate 5 to which the vacuum heat insulating material 7 is fixed and pressing the storage cover 8 against the door front plate 2 by the vacuum heat insulating material 7 and foaming between the door front plate 2 and the door inner plate 5. And a step of injecting and foaming the heat insulating material 6.

  More specifically, in the fixing process of the vacuum heat insulating material 7, the support structure 11 is bonded to the inner surface of the door inner plate 5, and the vacuum heat insulating material is further bonded to the support structure 11. Next, in the pressing step, the storage cover 8 is arranged on the door front plate 2 with the back surface of the door front plate 2 facing up. The storage cover 8 is bonded and fixed to the rim member 10, and the door inner plate 5 on which the vacuum heat insulating material 7 is fixed is placed thereon, and the storage cover 8 is pressed against the door front plate 2 by the vacuum heat insulating material 7. . Next, the foam heat insulating material 6 is injected between the door front plate 2 and the door inner plate 5 to foam.

  Since the insertion opening 13 is opened in the rim member 10, the display device 4 is inserted from the insertion opening 13 along the guide rail 14 in the storage cover 8, and the display device 4 is installed in the storage cover 8. After the installation, the insertion port 13 is covered to complete the refrigerator door.

  In this manner, the vacuum heat insulating material 7 is sandwiched between the storage cover 8 and the door inner plate 5 via the support structure 11, and the storage cover 8 is connected to the door inner plate 5 and the door front via the vacuum heat insulating material 7. It is pressed against the face plate 2 from the front-rear direction. Therefore, since the foamed heat insulating material 6 foams in a state where the movement of the storage cover 8 is restricted at least in the front-rear direction, the storage cover 8 is resistant to the stress of the foamed heat insulating material 6 without temporarily fixing the storage cover 8 with a tape or the like. Movement can be restricted. Thereby, the storage cover 8 can be reliably fixed to a predetermined position of the door front plate 2 without causing distortion in the back surface processing of the door front plate 2.

  Moreover, since the support structure 11 is formed between the vacuum heat insulating material 7 and the door inner board 5, the support structure 11 can restrict | limit the movement of the storage cover 8, and in front of the door The storage cover 8 can be securely fixed to a predetermined position of the door front plate 2 without causing distortion in the back surface treatment of the face plate 2.

  Moreover, since the support structure 11 has the gap 12 in the front-rear direction of the concave groove, the foam heat insulating material 6 can flow through the gap 12 when the foam heat insulating material 6 is injected. 6 can be more uniformly filled. In addition, the support structure 11 can also be formed between the vacuum heat insulating material 7 and the back surface of the storage cover 8, and even in this case, the movement of the storage cover 8 can be surely restricted as described above.

  FIG. 4 is an exploded perspective view of the refrigerator door according to the second embodiment. In the second embodiment, by forming L-shaped positioning protrusions 16 in a plane cross section at the four corners of the front surface of the support structure, the positioning protrusions 16 engage with the periphery of the vacuum heat insulating material 7, thereby supporting the support structure 11. And the horizontal positioning between the vacuum heat insulating material 7 becomes possible.

  Furthermore, the protruding length of the positioning protrusion 16 can be increased and the four corners of the storage cover 8 can be engaged. Thereby, positioning and movement suppression of the support structure 11, the vacuum heat insulating material 7, and the storage cover 8 can also be performed reliably.

    FIGS. 5A and 5B are diagrams showing a support structure portion in the third embodiment, where FIG. 5A is a plan sectional view and FIG. 5B is a front view. In the present embodiment, unlike the above two embodiments, it is divided into a plurality of support structures 11. Specifically, three support structures 11 are arranged at intervals, and a foaming material injection channel is formed between the support structures 11 in the vertical direction.

  In the above configuration, since the support structure 11 can be reduced, the cost can be reduced and the amount of the foam heat insulating material between the support structures 11 is increased. In particular, when the liquid crystal display is large, it is difficult for the foam heat insulating material to flow in and out between the upper and lower sides of the door. Can be filled.

  FIG. 6 is a plan sectional view of the support structure portion showing the fourth embodiment. In this embodiment, the back surface of the support structure 11 is a flat portion, and the flat portion is disposed on the door inner plate 5 side, and a gap 12 serving as a vertical flow path is provided between the vacuum heat insulating material 7 and the support structure 11. It is a formed structure.

  In the said structure, since the flat part of the support structure 11 exists in the door inner board 5 side, affixing with respect to the door inner board 5 becomes easy, and adhesiveness also becomes good.

  FIG. 7 is a front view of the support structure portion showing the fifth embodiment. In this embodiment, square bar-like support structures 11 are arranged only on both sides of the door inner plate 5. Since the number of the support structures 11 is reduced, the cost is reduced. In addition, since the gap in the central portion is widened and the injection flow path is increased, the amount of inflow / outflow of the foam heat insulating material 6 is increased, and the foam heat insulating material 6 is more uniformly formed above and below the door.

  FIG. 8 is a front view of a support structure portion showing a sixth embodiment. In this embodiment, the support structure 11 arranges the support structures 11 at the four corners and the center of the door inner plate, and the gap 12b is provided not only in the vertical gap 12a but also on the left and right sides as the inflow path of the heat insulating foam material 6. Forming. Therefore, the foam heat insulating material 6 can be uniformly filled not only vertically but also horizontally.

  FIG. 9 is a plan sectional view of the support structure portion showing the seventh embodiment. In this embodiment, without providing the support structure 11, only the vacuum heat insulating material 7 is interposed between the door inner plate 5 and the storage cover 8, and the vacuum heat insulating material 7 is sandwiched between the door inner plate 5 and the storage cover 8. It is a structure to support. In this structure, since the vacuum heat insulating material 7 is sandwiched and supported by the door inner plate 5 and the storage cover 8 without interposing the support structure 11, the volume of the vacuum heat insulating material 7 increases and the cost increases. Since the heat insulating material 7 has the highest heat insulating performance compared to other heat insulating materials, the door can be thinned while maintaining the heat insulating performance.

  FIG. 10 is a front view of the refrigerator door showing the eighth embodiment, and FIG. 11 is an exploded perspective view showing the positional relationship between the refrigerator door and the support structure. In this embodiment, it is a support structure using the partition part 15 of the door inner board 5, for example, the partition part 15 which accommodates a stored item in the store room side. The support structure 11 is disposed at a position corresponding to the partition portion 15 and the vacuum heat insulating material 7 is disposed below the support structure 11. The plurality of support structures 11 are in the form of a cross beam, and a gap 12 serving as an injection channel is formed inside.

  Since the door pocket partition part 15 is an aspect which protrudes in the front-back direction, the structural strength of the front-back direction becomes large. Therefore, if the vacuum heat insulating material 7 is supported by the partition portion 15, the support portion of the vacuum heat insulating material 7 can be prevented from being deformed in the front-rear direction, and the display device 4 can be more reliably connected to the door front plate. 2 can be pressed.

  Moreover, since the clearance gap 12 can be formed with the support structure 11 of a cross beam, the foam heat insulating material 6 can be filled more uniformly.

  FIG. 12 is an exploded perspective view of the refrigerator door showing the ninth embodiment. By placing the display device 4 in the center of the door and foaming, the display device 4 can be easily attached to the door. In the case of this example, the insertion opening 13 (see FIG. 1) into which the display device 4 is inserted is not provided, but the foamed heat insulating material 6 foams in a state where the movement of the storage cover 8 is restricted. Thus, the storage cover 8 can be prevented from moving against the stress of the foam heat insulating material 6 without being temporarily fixed.

  As described in the above embodiments, the present invention is installed behind the translucent door front plate and is visible behind the door surface through the door front plate, and behind the door front plate. On the rear surface of the door front plate, a foam heat insulating material that is injected between the door inner plate and the door front plate and filled by foaming, a vacuum heat insulating material disposed between the door inner plate and the door front plate, and And a storage cover that forms a storage space in which the display device is stored, wherein the vacuum heat insulating material is disposed between the storage cover and the door inner plate, and the storage cover It is characterized by being supported in the front-rear direction by the back surface of the door and the door inner plate.

  According to the above configuration, the vacuum heat insulating material is sandwiched between the storage cover and the door inner plate, and the storage cover is pressed against the door inner plate and the door front plate from the front and rear directions via the vacuum heat insulating material. Therefore, since the foamed heat insulating material foams in a state where the movement of the storage cover is restricted at least in the front-rear direction, it can be prevented from moving against the stress of the foamed heat insulating material without being temporarily fixed with a tape or the like. Thereby, the storage cover can be reliably fixed at a predetermined position of the door front plate without causing distortion in the rear surface treatment of the door front plate.

  In addition, a support structure is formed between the vacuum heat insulating material and the back surface of the storage cover and between at least one of the vacuum heat insulating material and the door inner plate. It is possible to adopt a configuration that is supported with a gap in between.

  According to the above configuration, since the support structure is formed between the vacuum heat insulating material and the back surface of the storage cover and between at least one of the vacuum heat insulating material and the door inner plate, it supports while forming a gap. be able to. Thereby, at the time of injection | pouring of a foam heat insulating material, it can pass through this clearance gap, and a foam heat insulating material can be filled more uniformly.

  In the present invention, a lateral positioning structure is formed between the vacuum heat insulating material and the back surface of the storage cover, and between at least one of the vacuum heat insulating material and the door inner plate. A configuration that is supported in a state where movement is restricted can be employed. According to this configuration, it is possible to reliably perform lateral positioning and movement restraint with the vacuum heat insulating material, the storage cover, and the door inner plate.

Further, in the present invention, the door inner plate is formed with a partition portion for storing the stored item on the storage chamber side, and the vacuum heat insulating material is supported by the door inner plate at a portion facing the partition portion. be able to. According to this configuration, by supporting the vacuum heat insulating material at the part where the structural strength is large in the front-rear direction, such as the partition part of the door inner plate, even if a thin material is used for the door inner plate, the vacuum heat insulating material is supported. It can suppress that a part deform | transforms in the front-back direction, and can press a storage cover to a door front board more reliably.

  Furthermore, in the present invention, the step of fixing the vacuum heat insulating material to the door inner plate, and the storage cover is arranged on the door front plate with the back surface of the door front plate facing up, and the vacuum heat insulating material is fixed from above. A step of placing the inner door plate and pressing the storage cover against the door front plate with a vacuum heat insulating material, and a step of injecting and foaming a foam heat insulating material between the door front plate and the door inner plate. A manufacturing method of a refrigerator door can be provided.

  According to the above manufacturing method, the storage cover is pressed against the door front plate with the vacuum heat insulating material, and the foamed heat insulating material is foamed in a state where the movement of the storage cover is restricted in the front-rear direction. If necessary, it can be prevented from moving against the stress of the foam insulation. At that time, the storage cover is securely fixed at a predetermined position on the door front plate without causing distortion in the rear surface treatment of the door front plate. can do.

  In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Refrigerator door 2 Door front board 4 Display apparatus 5 Door inner board 6 Foam heat insulating material 7 Vacuum heat insulating material 8 Storage cover 10 Edge member 11 Support structure 12 Gap 13 Insertion slot 14 Guide rail 15 Partition part 16 Positioning protrusion

Claims (5)

A display device that is installed on the rear surface of the translucent door front plate and is visible from the door surface through the door front plate;
A foam insulation material that is injected between the door inner plate and the door front plate installed behind the door front plate and filled by foaming;
A refrigerator door comprising a vacuum heat insulating material disposed between a door inner plate and a door front plate, and a storage cover that is installed on the rear surface of the door front plate to form a storage space for storing a display device. ,
The refrigerator door, wherein the vacuum heat insulating material is disposed between the storage cover and the door inner plate, and the storage cover is pressed against the door inner plate and the door front plate through the vacuum heat insulating material from the front and rear directions .   A support structure for supporting the vacuum heat insulating material is formed between the vacuum heat insulating material and the back surface of the storage cover and between at least one of the vacuum heat insulating material and the door inner plate, and the support structure is foamed. The refrigerator door of Claim 1 in which the clearance gap of the front-back direction used as the flow path at the time of injection | pouring of a heat insulating material is formed. The refrigerator door according to claim 1, further comprising a frame-shaped edging member that covers an outer periphery of the door front plate and the door inner plate, and the storage cover is fixed to the edging member.   The partition part which accommodates a store thing in the storage chamber side is formed in the door inner board, and a vacuum heat insulating material is supported by the door inner board in the part which opposes a partition part. Refrigerator door. Fixing the vacuum heat insulating material to the door inner plate,
Place the storage cover on the door front plate with the back of the door front plate facing up, place the door inner plate with the vacuum heat insulating material fixed on it, and place the storage cover on the door front plate with the vacuum heat insulating material. Pressing process,
Injecting foam insulation between the door front plate and the door inner plate and foaming,
The manufacturing method of the refrigerator door provided with.

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