WO2014038189A1 - Refrigerator - Google Patents

Abstract

A door has: an inner box frame (23) which is located on the inside of a refrigerator body; and a transparent front plate (25) which is equipped with a colored layer (28) and which is disposed on the edge frame (24) of the inner box frame (23) so as to cover the inner box frame (23). The door also has foamed urethane (29) poured into and foamed in the space between the transparent front plate (25), the inner box frame (23), and the edge frame (24). The transparent front plate (25) is adhered to and held by the foamed urethane (29), and the outer peripheral section of the transparent front plate (25) is adhered to the edge frame (24) of the inner box frame (23) by a double-sided tape (30).

Description

refrigerator

The present invention relates to a refrigerator, and more particularly to a refrigerator door configuration.

Generally, this kind of refrigerator is provided with a refrigerator room, a freezer room, a vegetable room, etc. in a refrigerator body having heat insulation properties, and these refrigerator rooms, freezer rooms, vegetable rooms, etc. can be opened and closed by doors.

The door includes a front plate that is a front surface of the refrigerator body, an inner box frame that is an inner surface of a refrigerator compartment, a freezer compartment, a vegetable compartment, and the like, and a frame that integrally connects the front plate and the inner box frame. . Furthermore, the door has urethane filled and foamed in a space formed by the front plate, the inner box frame, and the frame, and has heat insulation as in the refrigerator main body.

In such a refrigerator, the front plate of the door greatly affects the appearance of the refrigerator, that is, the design, and the finish greatly affects the quality of the entire refrigerator.

Therefore, there is a structure in which the front plate of the door is made of a glass plate in order to improve the design of the door (for example, see Patent Document 1).

FIG. 17 shows a main part of a door of a conventional refrigerator, and the door 101 forms a front plate 104 with a colored glass plate 103 in which a colored layer 102 such as a pattern is formed by silk printing. Foam urethane 107 is filled and foamed between the front plate 104, the inner box frame 105, and the frame body 106.

According to this configuration, since the transparent layer of the colored glass plate 103 is positioned in front of the colored layer 102, the front plate 104 adds depth to the color of the color, and the texture is increased. In comparison, there is an advantage that the design is improved.

However, this conventional door 101 is provided with a front plate insertion portion 108 in the frame body 106, and the front plate 104 is fitted in the front plate insertion portion 108. For this reason, this front board insertion part 108 exposed to the front surface periphery of the colored glass plate 103, and the subject that the design property improved using the colored glass plate 103 for the front board 104 was impaired.

In addition, very fine pride and dust are deposited on the boundary between the edge portion of the front plate insertion portion 108 and the colored glass plate 103, and even if this fine dust or dust is wiped off, it is completely removed. Can not wipe off. Therefore, dust and dust begin to appear linearly along the edge of the front plate insertion portion 108. If the colored glass plate 103 is white, the dust and dust start to stand out after a short period of use, and become more noticeable as the service period becomes longer, which greatly impairs the appearance of the refrigerator.

Therefore, conventionally, in order to solve such problems, the front plate insertion portion 108 of the frame body 106 was abolished and the end portion of the colored glass plate 103 was exposed as it was, and a life acceleration test was performed. .

As a result, when water or the like is applied to the end surface of the door 101, the water enters inward from the contact surface between the front plate 104 and the frame body 106 on the end surface of the door 101, and this water causes the front plate 104 and urethane foam to enter. Adhesive strength with 107 changes over time. Then, the adhesion between the urethane foam 107 and the front plate 104 is partially peeled off, and the peeling gradually spreads over the whole. As described above, it has been found that it is difficult to guarantee the adhesive strength between the front plate 104 having the colored glass plate 103 and the urethane foam 107 over a long period of time.

Further, the colored layer 102 formed by silk printing or the like on the colored glass plate 103 has a variation in adhesive strength with the colored glass plate 103. For this reason, it has also been found that the adhesive state between the colored layer 102 and the colored glass plate 103 deteriorates due to thermal shrinkage or aging of the urethane foam 107, and the colored layer 102 may be peeled off from the colored glass plate 103 together with the urethane foam 107.

The present invention has been made in view of the above points, and can guarantee the adhesive strength of a transparent front plate such as a glass plate over a long period of time, and enhances the designability and keeps the high designability as it is. A refrigerator with a door is provided.

Japanese Patent No. 3140110

The present invention includes an inner box frame positioned inside the refrigerator main body with the door closed, and a transparent front plate with a colored layer disposed on an edge frame of the inner box frame so as to cover the inner box frame. It is made of urethane foam filled and foamed in a space formed by the transparent front plate and the inner box frame. In addition, the transparent front plate is bonded and held to urethane foam, and the outer peripheral portion of the transparent front plate is bonded to the edge frame of the inner box frame with double-sided tape.

This allows the glass plate to be bonded and held more firmly because it adheres to the edge frame of the inner box frame via double-sided tape in addition to being bonded to urethane, and the adhesive force is applied. And even if water splashes on the door edge, this water is blocked from entering inward by the double-sided tape that bonds the transparent front plate and the edge of the inner box frame. It is possible to reliably prevent adhesion peeling between the transparent front plate and the transparent front plate. Therefore, it is possible to ensure the maintenance of the adhesive strength of the transparent front plate over a long period of time.

In addition, since the transparent front plate insertion portion covering the peripheral edge of the transparent front plate can be abolished in terms of design, the design can be made without any loss and the entire surface can be made to have a clean appearance with a flat feeling. In addition, dust, dust or the like does not adhere to the boundary between the transparent front plate insertion portion and the transparent front plate, and this does not stand out linearly. Therefore, the initial high designability can be maintained as it is over a long period of time.

FIG. 1 is an external perspective view of the refrigerator according to the first embodiment of the present invention. FIG. 2 is a sectional view of the refrigerator in the first embodiment of the present invention. FIG. 3 is a perspective view of the door of the refrigerator according to the first embodiment of the present invention. FIG. 4 is an exploded perspective view of the door of the refrigerator in the first embodiment of the present invention. 5 is a cross-sectional view taken along the line 5-5 in FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG. FIG. 7 is an explanatory diagram for explaining how to apply the double-sided tape to the edge frame of the refrigerator according to the first embodiment of the present invention. FIG. 8 is an enlarged cross-sectional view showing a door end portion of the refrigerator in the first embodiment of the present invention. FIG. 9 is a cross-sectional view including an enlarged view of a main part of a refrigerator door in the second embodiment of the present invention. FIG. 10: is sectional drawing of the door containing the principal part expanded sectional view of the refrigerator in the 3rd Embodiment of this invention. FIG. 11: is sectional drawing of the door containing the principal part expanded sectional view of the refrigerator in the 4th Embodiment of this invention. FIG. 12 is a schematic diagram for explaining a laminated state from the transparent front plate of the refrigerator door to the urethane foam in the fifth embodiment of the present invention. FIG. 13: is a schematic diagram explaining the lamination | stacking state from the transparent front board of the refrigerator door in the 6th Embodiment of this invention to foaming urethane. FIG. 14 is an explanatory diagram for explaining the state of tape application to the edge frame of the refrigerator in the sixth embodiment of the present invention. FIG. 15: is an expanded sectional view which shows the door edge part of the refrigerator in the 6th Embodiment of this invention. FIG. 16: is a schematic diagram explaining the lamination | stacking state from the transparent front board of the refrigerator door in the 7th Embodiment of this invention to foaming urethane. FIG. 17 is a sectional view of a door in a conventional refrigerator.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the first embodiment, the configuration corresponding to the peeling caused by the colored layer will be described as an example. However, the present invention is not limited to this.

(First embodiment)
1 is an external perspective view of a refrigerator in the first embodiment of the present invention, FIG. 2 is a sectional view of the refrigerator in the first embodiment of the present invention, and FIG. 3 is in the first embodiment of the present invention. It is a perspective view of the door of a refrigerator. 4 is an exploded perspective view of the door of the refrigerator according to the first embodiment of the present invention, FIG. 5 is a sectional view taken along line 5-5 of FIG. 3 including an enlarged view of main parts, and FIG. It is sectional drawing. Moreover, FIG. 7 is explanatory drawing explaining how to stick the double-sided tape to the edge frame of the refrigerator in the 1st Embodiment of this invention, FIG. 8 is the door edge part of the refrigerator in the 1st Embodiment of this invention. FIG.

1 and 2, the refrigerator body 1 includes a metal (for example, iron plate) outer box 2 that opens forward, an inner box 3 that is made of hard resin (for example, ABS), an outer box 2, and an inner box 3. It consists of the hard foaming urethane 4 foam-filled between. The refrigerator main body 1 is located inside the refrigerator compartment 5, the switching chamber 6 located below the refrigerator compartment 5, the ice making chamber 7 juxtaposed to the switching chamber 6, and the switching chamber 6 and the lower part of the ice making chamber 7. It has a freezer compartment 8 and a vegetable compartment 9 located below the freezer compartment 8. Further, the front surface of the refrigerator compartment 5 is closed freely by, for example, a double door 10 and the switching chamber 6, the ice making room 7, the freezing room 8, and the vegetable room 9 have front-side doors 11, 12, 13. , 14 can be freely opened and closed.

The cooling chamber 16 is provided in the back surface of the refrigerator main body 1, and it has the cooler 17 which produces | generates cold air, and the ventilation fan 18 which supplies cold air to each chamber. Further, a compressor 19 is provided at the back of the main body top of the refrigerator main body 1. A refrigerant is enclosed in a refrigeration cycle in which the compressor 19, a condenser (not shown), a heat radiating pipe 20, a capillary tube 21, and a cooler 17 are sequentially connected in an annular manner, and a cooling operation is performed. Configured to do.

Here, each of the doors 10 to 14, like the refrigerator main body 1, is foamed and filled with hard urethane to give heat insulation, and the front surface thereof is made of a transparent front plate such as a glass plate in order to further improve the design. It is configured.

Hereinafter, the structure of the door 10 will be described with reference to FIGS. 3 to 8 as an example. The doors 11 to 14 other than the door 10 have the same configuration.

3 to 8, the inner box frame 23 is located inside the refrigerator main body 1 with the door 10 closed, and is made of, for example, ABS resin. An edge frame 24 made of ABS resin is coupled and fixed to the peripheral end surface of the inner box frame 23. A transparent front plate 25 such as a glass plate is laminated on the edge frame 24 so as to cover the inner box frame 23. In the present embodiment, the transparent front plate 25 is formed of a glossy tempered glass plate.

As shown in FIG. 5, the transparent front plate 25 has a resin film 27 attached to its inner surface via an adhesive 26 so as to cope with the peeling caused by the colored layer. A colored layer 28 made of a metallic pattern such as a hairline is formed. Thereby, the transparent front plate 25 comprised with the glass plate turns into a glass plate with a colored layer. In this embodiment, the resin film 27 is made of polyethylene terephthalate having high transparency and high mechanical strength. The white colored layer 28 is formed on the side opposite to the transparent front plate 25, and the gray colored layer 28 is transparent. It is formed on the front plate 25 side. FIG. 5 shows a case where the colored layer 28 is formed on the side surface opposite to the transparent front plate 25.

In a space formed between the surface of the transparent front plate 25 on the resin film 27 side and the inner box frame 23 to which the edge frame 24 is bonded and fixed, a hard foamed urethane 29 filled and foamed is provided. The urethane foam 29 is bonded to the resin film 27 on the inner surface of the transparent front plate 25 together with the inner box frame 23 and the edge frame 24, and the transparent front plate 25 is bonded and held via the resin film 27.

Here, the foaming density of the urethane foam 29 is set higher in the outer peripheral portion than in the central portion of the transparent front plate 25.

Also, the edge frame 24 of the inner box frame 23 and the outer peripheral portion of the transparent front plate 25 are bonded via a double-sided tape 30. Thus, the transparent front plate 25 is bonded and held to the urethane foam 29 and is also bonded and held to the edge frame 24 by the double-sided tape 30.

As shown in FIG. 7, the double-sided tape 30 includes a horizontal tape portion 30 a located along the upper and lower horizontal edges of the transparent front plate 25 and a vertical tape portion 30 b located along the left and right edges of the transparent front plate 25. . The horizontal tape part 30a is located on the full width of the transparent front plate 25, and is affixed to the edge frame 24 in such a manner that the long side face of the horizontal tape part 30a abuts the short side face of the vertical tape part 30b.

The tape bonding surface of the edge frame 24 includes a flat portion 24a located on the outer edge side of the edge frame, and a plurality of grooves 24b located on the inner edge side of the edge frame and opened to the inner edge side of the edge frame. The double-sided tape 30 is attached to the edge frame 24 so as to straddle both the flat portion 24a and the groove 24b.

Further, as shown in FIG. 8, the double-sided tape 30 has a tape inner edge 30 c that protrudes beyond the inner edge 24 e of the edge frame 24 to a bonding surface between the urethane foam 29 and the resin film 27, and the urethane foam 29 and the resin film 27. Located between and.

Further, the edge frame 24 of the inner box frame 23 does not have the colored transparent front plate insertion portion as described in the conventional example, and the transparent front plate 25 has an outer peripheral edge as shown in FIGS. The configuration is such that it is positioned slightly inside the end surface 24 c of the frame 24.

In addition, in this embodiment, as shown in FIG. 5, the edge frame 24 of the inner box frame 23 projects forward from the front surface of the transparent front plate 25 to the portion located on the lower end surface of the transparent front plate 25. A transparent front plate support piece 24d that is in contact with the lower end surface of the transparent front plate is provided so as not to have a size, and the weight of the transparent front plate 25 is supported.

In this configuration, the refrigerator door 10 has the transparent front plate 25 bonded and held with urethane foam 29 and the outer peripheral portion of the transparent front plate 25 is bonded to the edge frame 24 of the inner box frame 23 with the double-sided tape 30. . With this configuration, the transparent front plate 25 is bonded to the edge frame 24 via the double-sided tape 30 in addition to the bonding to the urethane foam 29. Therefore, the transparent front plate 25 with the colored layer to which the resin film 27 is attached is strongly bonded and held to both the urethane foam 29 and the edge frame 24, and the adhesive strength of the transparent front plate 25 over a long period of time. Maintenance can be ensured.

In addition, since the double-sided tape 30 adheres the outer peripheral portion of the transparent front plate 25 to the edge frame 24 of the inner box frame 23, it prevents water applied to the door from entering the door inward from the door end. It also becomes. Therefore, it is possible to reliably prevent the peeling of the foamed urethane 29 and the transparent front plate 25 due to the intrusion of water, and it is possible to reliably guarantee the adhesion of the transparent front plate 25 over a long period of time.

That is, the temperature difference between the inside and outside of the refrigerator is large, and the edge of the transparent front plate 25 of the door is affected by condensation and severe temperature change due to the cold air from the inside when the door is opened and closed. In addition, depending on the usage of the user, the door may be subjected to a violent impact during opening and closing, or the door including the transparent front plate 25 may overflow with water or juice when the stored items are put in and out. If the end of the transparent front plate 25 does not have a transparent front plate insertion portion that covers the end of the transparent front plate depending on the usage environment / actual condition peculiar to the refrigerator, water or the like that is applied to the end of the door enters the door inward. The environment is easy to enter and easily peeled off from the urethane foam 29.

In such an environment, in the refrigerator in the present embodiment, the transparent front plate 25 serving as the door end and the edge frame 24 of the inner box frame 23 are bonded by the double-sided tape 30. With this configuration, the double-sided tape 30 reliably prevents intrusion of water or the like into the door from between the transparent front plate 25 and the edge frame 24. Therefore, it can be prevented that water or the like enters the door inward from the door end portion and adhesion peeling between the transparent front plate 25 and the urethane foam 29 occurs. Adhesive strength can be maintained and guaranteed.

In particular, the double-sided tape 30 has a configuration in which the short side surface of the vertical tape portion 30b is abutted against the long side surface of the horizontal tape portion 30a disposed along the upper and lower horizontal edges of the transparent front plate 25. That is, even when water is applied to the door end, the upper portion of the door that easily intrudes inward due to gravity is positioned so that the horizontal tape portion 30a of the double-sided tape 30 is continuous throughout its entire length. . Therefore, it is possible to reliably prevent water from entering the inside of the door, and it is possible to further improve the reliability of the adhesive holding of the transparent front plate 25. The tape bonding surface of the edge frame 24 of the inner box frame 23 includes a flat portion 24a located on the outer edge side of the edge frame, and a plurality of grooves 24b located on the inner edge side of the edge frame and opened to the inner edge side of the edge frame. ing. With this configuration, when the double-sided tape 30 is affixed to the edge frame 24 of the inner box frame 23, bubbles that are likely to be generated between the double-sided tape 30 and the edge frame 24 are smoothly removed from the plurality of grooves 24b. Therefore, it is possible to reliably bond the double-sided tape 30 without bubbles, and the adhesive strength of the transparent front plate 25 can be further improved.

In addition, the double-sided tape that bonds the outer peripheral portion of the transparent front plate 25 and the edge frame 24 of the inner box frame 23 has the tape inner edge 30c beyond the inner edge 24e of the edge frame 24 and the urethane foam 29 and the resin film 27. It protrudes to the adhesive surface. By adopting a configuration in which the double-faced tape 30 is positioned between the urethane foam 29 and the resin film 27, it is possible to prevent the resin film 27 from being peeled off or torn at the inner edge 24e of the edge frame 24. it can.

When the urethane foam 29 undergoes thermal shrinkage, the peeling force concentrates on the inner edge 24e of the edge frame 24 due to the thermal shrinkage, and the resin film 27 is easily peeled or torn at this portion. However, when the double-sided tape 30 is positioned so as to straddle the inner edge 24e of the edge frame 24, it has been confirmed from the experimental results that the peeling of the resin film 27 can be prevented. There are various reasons for this, but one of them is presumed to ease concentration of the peeling force due to thermal shrinkage of the urethane foam 29. As a result, the resin film 27 can be prevented from being peeled off or torn at the inner edge 24e of the edge frame 24 of the urethane foam 29, the reliability of the adhesive holding of the transparent front plate 25 can be further improved, and the design can be improved. It can also be prevented from lowering.

On the other hand, in the refrigerator in the present embodiment, the colored layer 28 made of a metallic pattern such as a hairline is positioned inside the transparent layer made of the transparent front plate 25 and the resin film 27. For this reason, depth is added to the coloring color, and the design is greatly improved as compared with the pre-painting plate made of metal or resin. In particular, in the present embodiment, since the colored layer 28 is formed on the resin film 27, it can be formed by a roller or the like. A fine pattern such as a hairline line that cannot be obtained by silk printing of a colored layer directly on the transparent front plate 25 can be formed with the configuration of the present embodiment. The sex can be greatly improved.

In addition, since the colored layer 28 can be formed by a roller or the like, the adhesion strength to the resin film 27 can be controlled and the resin can be used even if the adhesive state deteriorates due to thermal shrinkage or aging of the urethane foam 29. It is possible to reliably prevent the film 27 from peeling off.

Thus, when the resin film 27 is positioned between the transparent front plate 25 and the urethane foam 29 and the transparent front plate 25 and the urethane foam 29 are bonded by the adhesive force of the urethane foam 29 and the adhesive 26, the following An effect is obtained. That is, it is possible to prevent the colored layer 28 from being peeled off from the resin film 27 and the transparent front plate 25 from being peeled off from the urethane foam 29 due to this peeling. Therefore, maintenance of the adhesive strength of the transparent front plate 25 with the resin film 27 can be ensured for a longer period of time.

Further, in the present embodiment, the foaming density of the urethane foam 29 is made higher in the outer peripheral portion than in the central portion of the transparent front plate 25, so that the adhesive force of the foamed urethane 29 is that of the outer peripheral portion of the transparent front plate 25. Is stronger. Thereby, maintenance of the adhesive force between the resin film 27 of the transparent front plate 25 and the urethane foam 29 can be more reliably ensured over a long period of time.

That is, as described above, the refrigerator is easily peeled off from the urethane foam 29 if the end of the transparent front plate 25 does not have a transparent front plate insertion portion that covers the end of the transparent front plate 25 depending on the use environment and actual condition peculiar to the refrigerator. It has become.

Correspondingly, in the present embodiment, the foamed density of the urethane foam 29 is high in the outer peripheral portion of the transparent front plate 25. That is, the outer peripheral portion of the transparent front plate 25 is bonded to a very finely foamed urethane skin layer, and the adhesive density between the urethane foam 29 and the resin film 27 of the transparent front plate 25 is high and strong. It has become. Therefore, even when used for a long time, the adhesion between the resin film 27 of the transparent front plate 25 and the urethane foam 29 is ensured, and the maintenance of the adhesive strength of the transparent front plate 25 with the resin film 27 is ensured for a long time. Can do.

A life acceleration test for the adhesive force between the transparent front plate 25 and the urethane foam 29 was performed. As a result, the adhesive strength is set to 1.0 g / cm ² or more, preferably 2.6 g / cm ² or more, so that the resin can surely be obtained even when the adhesive strength is deteriorated due to secular change such as thermal shrinkage of the urethane foam 29. The adhesive strength between the film 27 and the urethane foam 29 can be ensured. As a result, maintenance of the adhesive strength of the transparent front plate 25 can be ensured over a long period of time.

The method for measuring the adhesive strength is based on “JIS K 6850 (Adhesive—Tensile Shear Adhesive Tensile Shear Bond Strength Test Method)”, which is a standard method for measuring the overlapping shear bond strength of an adhesive.

In this embodiment, the resin film 27 is formed of a polyethylene terephthalate film. Since this polyethylene terephthalate has high mechanical strength, the resin film 27 itself is torn due to the secular change accompanying the thermal shrinkage of the foamed urethane 29, and the peeling of the adhesion of the resin film 27 to the foamed urethane 29 from this torn part over time. It can be prevented from progressing.

On the other hand, the door 10 can eliminate the transparent front plate insertion portion that covers the peripheral edge portion of the conventional transparent front plate 25 by ensuring the maintenance of the adhesive strength. Therefore, since there is no transparent front plate insertion portion, the design is not impaired, and a clean appearance with a flat feeling on the entire surface can be achieved. In addition, since there is no transparent front plate insertion portion, dust, dust, and the like that have adhered and accumulated at the boundary between the transparent front plate insertion portion and the transparent front plate 25 as in traffic jams are eliminated. Therefore, the initial high designability can be maintained as it is over a long period of time.

Further, in the present embodiment, a portion of the edge frame 24 of the inner box frame 23 that is located on the lower end surface of the transparent front plate 25 is formed on the lower surface of the transparent front plate without jumping forward from the front surface of the transparent front plate 25. A transparent front plate support piece 24d in contact therewith is located. With this configuration, the weight of the transparent front plate 25 is supported by the transparent front plate support piece 24 d of the edge frame 24 of the inner box frame 23. Therefore, even if the peeling of the transparent front plate 25 may partially occur due to the deterioration of the adhesive force of the transparent front plate 25 by the urethane foam 29, an abnormal situation such as the transparent front plate 25 dropping is not possible. It can be surely prevented. Further, since the transparent front plate support piece 24d of the edge frame 24 of the inner box frame 23 does not protrude from the front surface of the transparent front plate 25, the transparent front plate support piece 24d is not seen from the front surface of the door like the transparent front plate insertion portion. In addition, the flatness of the entire surface can be kept good.

In particular, in the present embodiment, as shown in FIG. 6, the outer peripheral edge of the transparent front plate 25 is located inside the end surface 24 c of the edge frame 24, so that the outer peripheral edge of the transparent front plate 25 is the end surface of the edge frame 24. 24c will protect. Therefore, for example, it is possible to prevent the outer peripheral edge of the transparent front plate 25 from hitting something and cracking when the door 10 is transported on the production line or when the door 10 is replaced at the user's house.

In addition, even if some external force is applied to the transparent front plate 25 and it may be broken, the fragments of the transparent front plate 25 are adhered to the resin film 27 to prevent scattering.

(Second Embodiment)
FIG. 9 is a cross-sectional view of a refrigerator door in the second embodiment of the present invention. In this embodiment, the adhesive force between the resin film 27 of the transparent front plate 25 and the urethane foam 29 is further enhanced.

That is, an easy adhesion layer 32 is formed on the surface of the resin film 27 on the foamed urethane 29 side, and the resin film 27 is bonded to the foamed urethane 29 through the easy adhesion layer 32.

The easy adhesion layer 32 can be formed by subjecting the surface of the resin film 27 to corona treatment or plasma treatment, or applying a polyester resin or acrylic resin.

When the adhesion surface of the resin film 27 and the urethane foam 29 is viewed microscopically, the skin layer of the urethane foam 29 and the resin film 27 are adhered. Since both surfaces of the skin layer of the foamed urethane 29 and the resin film 27 are smooth, there is a risk that they will be peeled off at once when they are peeled off. In particular, when the foaming density of the urethane foam 29 on the outer peripheral portion of the transparent front plate 25 is increased and the adhesive surface is used as a skin layer, the peeling may spread on the outer peripheral portion of the transparent front plate 25.

However, the adhesive strength between the resin film 27 and the urethane foam 29 is increased by forming the easy-adhesion layer 32 on the adhesive surface of the resin film 27 with the urethane foam 29 as in the present embodiment. Therefore, it is possible to prevent the peeling of the urethane urethane 29 skin layer and the resin film 27 from spreading. Therefore, maintenance of the adhesive strength between the resin film 27 on the inner surface of the transparent front plate 25 and the urethane foam 29 can be ensured over a long period of time.

In addition, the adhesive strength of the central portion of the transparent front plate 25 where the foaming density of the urethane foam 29 is low and the substantial adhesion area between the urethane foam 29 and the resin film 27 is reduced by the formation of the easy adhesion layer 32. Can do. That is, the adhesive strength of the easy-adhesive layer 32 compensates for the fact that the urethane foaming density is low and the substantial adhesion area between the urethane foam 29 and the resin film 27 is reduced, and the adhesive strength between the urethane foam 29 and the resin film 27 is increased. It can be made more reliable. As a result, maintenance of the adhesive strength of the transparent front plate 25 can be ensured over a long period of time.

Particularly when the easy-adhesion layer 32 is formed by applying a polyester-based adhesive, it is as follows. That is, the polyester constituting this polyester-based adhesive has a solubility parameter (hereinafter referred to as SP value) of 10 to 11 of the SP value of urethane and 11 of the SP value of polyethylene terephthalate which is a resin film material. .3 is close. Therefore, the adhesive force between the resin film 27 and the urethane foam 29 becomes stronger, and the adhesion strength maintenance is extremely high. In other words, a polyester-based (also acrylic-based) resin is a urethane-modified resin film in which —OH groups are reacted with isocyanate at the terminal. On the other hand, the urethane foam is an isocyanate cured polyether polyol. Therefore, although the basic resin skeleton is different, the reaction content is the same, so that the adhesive strength is improved. Therefore, maintenance of the adhesive strength of the transparent front plate 25 can be ensured over a long period of time.

As mentioned above, although main embodiment of this invention was described, the said embodiment was shown as an example in implementing this invention, and various structures are changed within the range which achieves the objective of this invention. It is possible to do.

For example, the transparent front plate 25 may be replaced with a transparent resin plate, which makes it possible to further ensure the adhesive strength by reducing the weight, and to reduce the cost. In addition, a resin film 27 with a colored layer is attached to the transparent front plate 25 to obtain a transparent front plate 25 with a colored layer. However, this eliminates the resin film 27 and forms a colored layer directly on the transparent front plate 25. It is good also as the transparent front board 25 with a colored layer by this.

Furthermore, the colored layer 28 of the resin film 27 may be on the transparent front plate 25 side as already described. Further, a urethane binder or a vapor deposition layer may be used as the easy adhesion layer 32 used for improving the adhesive strength between the resin film 27 and the urethane foam 29. Alternatively, a vapor-deposited layer and / or a urethane binder may be further interposed between the easy-adhesion layer 32 and the urethane foam 29, and the adhesive strength and the design of the colored layer can be improved by using them as necessary. .

(Third embodiment)
Hereinafter, the refrigerator in the 3rd Embodiment of this invention is demonstrated, referring drawings. Note that the present invention is not limited to the present embodiment.

Also, the same components as those in the refrigerator according to the first embodiment of the present invention are denoted by the same reference numerals and description thereof is omitted.

FIG. 10 is a cross-sectional view including an enlarged view of a main part of the door 10 of the refrigerator according to the third embodiment of the present invention. The refrigerator in the present embodiment further enhances the adhesive force between the resin film 27 of the transparent front plate 25 made of the glass plate of the door 10 and the urethane foam 29.

That is, the adhesive 26a is applied also to the surface of the resin film 27 on the urethane foam side, and urethane is filled and foamed from above the adhesive 26a so that the resin film 27 and the urethane foam 29 are interposed via the adhesive 26a. And glue.

Thereby, the adhesive strength at the central portion of the transparent front plate 25 where the foaming density of urethane is low and the substantial adhesion area between the urethane foam 29 and the resin film 27 is reduced can be improved. That is, the adhesive force by the adhesive 26a compensates for the fact that the urethane foam density is low and the substantial adhesion area between the urethane foam 29 and the resin film 27 is reduced. With this configuration, the adhesive strength between the urethane foam 29 and the resin film 27 can be more reliably ensured, and the maintenance of the adhesive strength of the transparent front plate 25 can be ensured over a long period of time.

Further, when the microscopic surface of the adhesive surface between the resin film 27 and the foamed urethane 29 is seen, the skin layer of the foamed urethane 29 and the resin film 27 are adhered. Since both surfaces of the skin layer of the foamed urethane 29 and the resin film 27 are smooth, there is a risk that they will be peeled off at once when they are peeled off. In particular, when the foam density of the outer peripheral portion of the transparent front plate 25 is increased and the adhesive surface thereof is a skin layer of urethane foam 29, there is a risk that peeling will spread at the outer peripheral portion of the transparent front plate 25.

However, the adhesive strength between the resin film 27 and the urethane foam 29 is increased by interposing the adhesive 26a on the contact surface of the resin film 27 with the urethane foam 29 as in the present embodiment. Therefore, it is possible to prevent the peeling of the urethane urethane 29 skin layer and the resin film 27 from spreading.

Particularly, as exemplified in the present embodiment, when a urethane adhesive or a polyester adhesive is used as the adhesive 26a, the following is obtained. That is, the urethane or polyester constituting this urethane-based or polyester-based adhesive has a solubility parameter (hereinafter referred to as SP value) of 10 to 11 for the urethane SP value. This SP value is close to 11.3 of the SP value of polyethylene terephthalate which is a resin film material. Therefore, the adhesive force between the resin film 27 and the urethane foam 29 becomes stronger, and the adhesion strength maintenance is extremely high. In other words, a polyester-based (also acrylic-based) resin is a urethane-modified resin film in which —OH groups are reacted with isocyanate at the terminal. On the other hand, the urethane foam is an isocyanate cured polyether polyol. Therefore, although the basic resin skeleton is different, the reaction content is the same, so that the adhesive strength is improved. Therefore, maintenance of the adhesive strength of the transparent front plate 25 can be ensured over a long period of time.

In addition, in the present embodiment, a transparent front plate support piece 24 d is provided in a portion of the edge frame 24 of the inner box frame 23 that is located on the lower end surface of the transparent front plate 25. The transparent front plate support piece 24d has a size that does not substantially protrude forward from the front surface of the transparent front plate 25. The transparent front plate support piece 24d is below the transparent front plate 25 with a protrusion margin of 2 mm or less forward from the front surface of the edge frame 24. It contacts the end face and supports the weight of the transparent front plate 25.

With this configuration, the weight of the transparent front plate 25 is supported by the transparent front plate support piece 24d of the edge frame 24 of the inner box frame 23. Therefore, even if the peeling of the transparent front plate 25 may partially occur due to the deterioration of the adhesive force of the transparent front plate 25 by the urethane foam 29, an abnormal situation such as the transparent front plate 25 dropping is not possible. It can be surely prevented. Further, since the transparent front plate support piece 24d of the edge frame 24 of the inner box frame 23 does not protrude from the front surface of the transparent front plate 25, the transparent front plate support piece 24d is not seen from the front surface of the door like the transparent front plate insertion portion. In addition, the flatness of the entire surface can be kept good.

In the present embodiment, the transparent front plate 25 has a resin film 27 attached via an adhesive 26, and a colored layer 28 made of a metallic pattern such as a picture pattern, such as a hairline, on the resin film 27. Is formed. Thereby, the transparent front plate 25 becomes a transparent front plate with a colored layer. In the present embodiment, the resin film 27 is made of polyethylene terephthalate having high transparency and high mechanical strength, and the colored layer 28 is formed on the side opposite to the transparent front plate 25 in the white type, and the transparent front plate 25 side in the gray type. Is formed. In FIG. 10, the case where it forms in the opposite side to the transparent front board 25 is shown.

In addition, when emphasizing the hairline three-dimensionally, an uneven groove is provided on the surface of the resin film 27 opposite to the colored layer formed on the transparent front plate 25 side to form a three-dimensional hairline, A chromium vapor deposition layer is formed on the surface. As a result, the design properties can be improved, and by using chromium as the material of the vapor deposition layer, the rust generation of the vapor deposition layer starting from the end surfaces of the film and the vapor deposition layer can be prevented, and the durability of the pattern is improved. .

In the refrigerator in the present embodiment, the adhesive 26a is provided on the urethane foam 29 side of the resin film 27, and the transparent front plate 25 and the inner box are provided as in the first and second embodiments of the present invention. A double-sided tape is not provided for bonding the edge frame 24 of the frame 23. However, as in the first and second embodiments of the present invention, a double-sided tape 30 is provided for bonding the transparent front plate 25 and the edge frame 24 of the inner box frame 23 as shown in FIG. Also good.

(Fourth embodiment)
Hereinafter, the refrigerator in the 4th Embodiment of this invention is demonstrated, referring drawings. Note that the present invention is not limited to the present embodiment.

Also, the same components as those in the refrigerators according to the first and third embodiments of the present invention are denoted by the same reference numerals and description thereof is omitted.

As shown in FIG. 11, the refrigerator in the present embodiment forms an easy adhesion layer 32 a on the foamed urethane side surface of the resin film 27 in the configuration of the door 10, and the resin film is interposed through the easy adhesion layer 32 a. 27 is bonded to urethane foam 29. The easy-adhesion layer 32a is formed by subjecting the surface of the resin film 27 to corona treatment or plasma treatment, or applying a urethane-based adhesive or a polyester-based or acrylic-based adhesive. In the present embodiment, a polyester adhesive is applied.

In the present embodiment, the easy adhesion layer 32a is formed on the surface of the resin film 27 that is in contact with the foamed urethane 29, so that the adhesive strength between the resin film 27 and the foamed urethane 29 is higher. Therefore, the peeling of the resin film 27 from the foamed urethane 29, and hence the transparent front plate 25, can be more reliably prevented, and the maintenance of the adhesive strength of the transparent front plate 25 with the resin film 27 can be ensured over a long period of time. Can do.

Particularly, as exemplified in the present embodiment, when polyethylene terephthalate is used as the resin film 27 and the easy-adhesion layer 32a is a urethane-based adhesive or a polyester-based adhesive, the adhesive strength becomes strong. That is, the polyester constituting the polyester-based adhesive has a solubility parameter (hereinafter referred to as SP value) of 10 to 11 of the SP value of urethane and 11. of the SP value of polyethylene terephthalate which is a resin film material. Close to 3. Therefore, the adhesive force between the resin film 27 and the urethane foam 29 becomes strong. In other words, a polyester-based (also acrylic-based) resin is a urethane-modified resin film in which —OH groups are reacted with isocyanate at the terminal. On the other hand, the urethane foam is an isocyanate cured polyether polyol. Therefore, although the basic resin skeleton is different, the reaction content is the same, so that the adhesive strength is improved. Therefore, it is possible to ensure the maintenance of the adhesive strength of the transparent front plate 25 even during long-term use.

Further, when the microscopic surface of the adhesive surface between the resin film 27 and the foamed urethane 29 is seen, the skin layer of the foamed urethane 29 and the resin film 27 are adhered. Since both surfaces of the skin layer of the foamed urethane 29 and the resin film 27 are smooth, there is a risk that they will be peeled off at once when they are peeled off. In particular, when the foaming density of the urethane foam 29 on the outer peripheral portion of the transparent front plate 25 is increased and the adhesive surface is used as a skin layer, the peeling may spread on the outer peripheral portion of the transparent front plate 25.

However, in this embodiment, as described above, by forming the easy-adhesion layer 32a on the adhesive surface of the resin film 27 with the urethane foam 29, the adhesive strength between the resin film 27 and the urethane foam 29 is high. Become. Therefore, it is possible to prevent the peeling of the urethane urethane 29 skin layer and the resin film 27 from spreading. Therefore, maintenance of the adhesive strength between the resin film 27 on the inner surface of the transparent front plate 25 and the urethane foam 29 can be ensured over a long period of time.

In addition, the adhesive strength of the central portion of the transparent front plate 25 where the foaming density of the urethane foam 29 is low and the substantial adhesion area between the urethane foam 29 and the resin film 27 is reduced by the formation of the easy adhesion layer 32a. Can do. That is, the adhesive strength of the easy-adhesive layer 32a compensates for the fact that the urethane foam density is low and the substantial adhesion area between the urethane foam 29 and the resin film 27 is reduced, and the adhesive strength between the urethane foam 29 and the resin film 27 is increased. It can be made more reliable. As a result, maintenance of the adhesive strength of the transparent front plate 25 can be ensured over a long period of time.

In the refrigerator according to the present embodiment, an easy-adhesion layer 32a is provided on the foamed urethane 29 side of the resin film 27, and the transparent front plate 25 and the inner side are provided as in the first and second embodiments of the present invention. A double-sided tape is not provided for bonding the edge frame 24 of the box frame 23. However, as in the first and second embodiments of the present invention, a double-sided tape 30 is provided for bonding the transparent front plate 25 and the edge frame 24 of the inner box frame 23 as shown in FIG. Also good.

(Fifth embodiment)
Hereinafter, the refrigerator in the 5th Embodiment of this invention is demonstrated, referring drawings. Note that the present invention is not limited to the present embodiment.

Also, the same components as those in the refrigerators according to the first and third embodiments of the present invention are denoted by the same reference numerals and description thereof is omitted.

FIG. 12 is a schematic diagram showing components of the refrigerator door in the present embodiment.

The transparent front plate 25 constituting the refrigerator door in the present embodiment has a resin film 27 attached to the inner surface of the transparent front plate 25 via an adhesive 26 in order to cope with peeling caused by the colored layer. The resin film 27 has a colored layer 28 a on the surface on the transparent front plate 25 side and a hairline 28 b on the surface on the urethane foam 29 side opposite to the transparent front plate 25. Thereby, the transparent front plate 25 becomes a colored transparent front plate with a hairline. In addition, when setting it as the white type colored layer which does not form the hairline 28b, you may form the colored layer 28a in the surface on the opposite side to the transparent front board 25. FIG.

Further, the outer peripheral portion of the resin film 27 attached to the inner surface of the transparent front plate 25 via an adhesive 26 and the edge frame of the inner box frame are bonded via a double-sided tape 30. And in order to strengthen the adhesive force with the double-sided tape 30 in the outer peripheral part of the resin film 27, the oxidation adjuvant 31 which consists of titanium oxide etc. is added. As a result, the transparent front plate 25 is strongly bonded and held to the foamed urethane 29 and is also bonded and held to the edge frame by the double-sided tape 30.

The double-sided tape 30 that improves the adhesive strength of the transparent front plate 25 has a relatively weak adhesive force to the resin film 27. For this reason, when the release paper of the double-sided tape 30 is peeled off as it is, the double-sided tape 30 itself may be peeled off from the resin film 27 and the workability may be lowered. However, in this embodiment, since the oxidation aid 31 is added to the surface of the resin film 27 to which the double-sided tape 30 is bonded, the adhesion between the double-sided tape 30 and the resin film 27 is a strong one accompanied by hydrogen bonding. It becomes. Therefore, it is possible to prevent the double-sided tape 30 itself from being peeled off from the resin film 27 when the release paper of the double-sided tape 30 is peeled off, and it is possible to eliminate the decrease in workability and improve the productivity.

(Sixth embodiment)
Hereinafter, the refrigerator in the 6th Embodiment of this invention is demonstrated, referring drawings. Note that the present invention is not limited to the present embodiment.

Also, the same components as those in the refrigerators according to the first and third embodiments of the present invention are denoted by the same reference numerals and description thereof is omitted.

FIG. 13 is a schematic diagram showing components of a refrigerator door in the present embodiment.

The transparent front plate 25 constituting the refrigerator door in the present embodiment has a resin film 27 attached to the inner surface of the transparent front plate 25 via an adhesive 26 in order to cope with peeling caused by the colored layer. The resin film 27 has a colored layer 28 a on the surface on the transparent front plate 25 side and a hairline 28 b on the surface on the urethane foam 29 side opposite to the transparent front plate 25. Thus, the transparent front plate 25 becomes a colored transparent front plate with a hairline.

Also, the outer peripheral portion of the transparent front plate 25 is bonded via a double-sided tape 30. As a result, the transparent front plate 25 is bonded and held to the urethane foam 29 and is also bonded and held to the edge frame 24 of the inner box frame 23 by the double-sided tape 30.

As shown in FIG. 14, the double-sided tape 30 includes a horizontal tape portion 30 a positioned along the upper and lower horizontal edges of the transparent front plate 25 and a vertical tape portion 30 b positioned along the left and right edges of the transparent front plate 25. . The horizontal tape portion 30a is located almost fully in the lateral width of the transparent front plate 25, and the resin film 27 shown in FIG. 13 in which the hair line 28b is formed in such a manner that the long side surface of the horizontal tape portion 30a abuts the short side surface of the vertical tape portion 30b. It is pasted on.

Further, as shown in FIG. 15, the double-sided tape 30 has a tape inner edge 30 c that protrudes beyond the inner edge 24 e of the edge frame 24 to an adhesive surface between the urethane foam 29 near the center and the resin film 27. The structure is located between the resin film 27 and the resin film 27.

Furthermore, a reinforcing layer 33 is provided between the double-sided tape 30 and the resin film 27 as shown in FIG. This reinforcing layer 33 suppresses local uneven load of foaming pressure applied to the resin film 27 from the urethane foam 29 through the tape inner edge 30 c of the double-sided tape 30. The reinforcing layer 33 is made of polyethylene terephthalate, which is a transparent resin film and has high transparency and high mechanical strength.

In this embodiment, the reinforcing layer 33 is provided on the surface of the foamed urethane 29 side of the resin film 27 subjected to the hairline processing. With this configuration, local uneven load due to the foaming pressure of the foamed urethane 29 applied to the resin film 27 through the tape inner edge 30c of the double-sided tape 30 protruding to the adhesive surface between the foamed urethane 29 and the resin film 27 is suppressed. And the generation | occurrence | production of the flaw which may arise so that it may cross the hairline 28b along the tape inner edge 30c of the double-sided tape 30 by the local eccentric load can be suppressed, and the hairline 28b can be maintained in a beautiful state.

That is, the double-sided tape 30 is projected to the adhesive surface between the urethane foam 29 and the resin film 27. Thereby, the foaming pressure of the urethane foam 29 is locally applied to the resin film 27 via the tape inner edge 30 c of the double-sided tape 30. Then, the local uneven load causes a flaw that crosses the hair line 28b along the tape inner edge 30c of the double-sided tape 30. This is considered to be caused by the fact that this portion is deformed (the groove depth of the hair line 28b is changed) due to a local offset load applied to the tape inner edge 30c located across the hair line 28b and the reflection of light is different.

However, in this embodiment, since the reinforcing layer 33 is provided between the tape inner edge 30c of the double-sided tape 30 that receives a local uneven load and the resin film 27, the reinforcing layer 33 is formed by the foaming pressure. Relaxing and suppressing local unbalanced load from As a result, the deformation that occurs along the tape inner edge 30c of the hair line 28b does not occur, and it is possible to prevent the occurrence of flaws that cross the hair line 28b.

Therefore, the present embodiment can solve the problem of lack of designability caused by providing the double-sided tape 30 and improving the adhesive strength of the transparent front plate 25, and can secure a good design.

(Seventh embodiment)
Hereinafter, the refrigerator in the 7th Embodiment of this invention is demonstrated, referring drawings. Note that the present invention is not limited to the present embodiment.

Also, the same components as those in the refrigerators according to the first, third, and sixth embodiments of the present invention are denoted by the same reference numerals and description thereof is omitted.

FIG. 16 is a schematic diagram showing components of a refrigerator door in the present embodiment.

In the seventh embodiment, the adhesive force between the resin film 27 of the transparent front plate 25 and the urethane foam 29 is further enhanced.

That is, an easy-adhesion layer 32 is formed on the surface of the resin film 27 on the urethane foam side, and the urethane film 29 is adhered via the easy-adhesion layer 32.

The easy adhesion layer 32 can be formed by subjecting the surface of the resin film 27 to corona treatment or plasma treatment, or applying a polyester resin or acrylic resin.

When the adhesion surface of the resin film 27 and the urethane foam 29 is viewed microscopically, the skin layer of the urethane foam 29 and the resin film 27 are adhered. Since both surfaces of the skin layer of the foamed urethane 29 and the resin film 27 are smooth, there is a risk that they will be peeled off at once when they are peeled off. In particular, when the foam density of the outer peripheral portion of the transparent front plate 25 is increased and the adhesive surface thereof is a skin layer of urethane foam 29, there is a risk that peeling will spread at the outer peripheral portion of the transparent front plate 25.

However, the adhesive strength between the resin film 27 and the urethane foam 29 is increased by forming the easy-adhesion layer 32 on the adhesive surface of the resin film 27 with the urethane foam 29 as in the present embodiment. Thereby, the spread of peeling between the skin layer of the urethane foam 29 and the resin film 27 can be prevented. Therefore, the adhesive strength between the resin film 27 on the inner surface of the transparent front plate 25 and the urethane foam 29 can be maintained and secured over a long period of time.

Further, this easy-adhesion layer 32 is made of an adhesive, and when it is dried and cured, it becomes a high-strength layer. It will also prevent the generation of crossing lines.

Further, the easy-adhesion layer 32 improves the adhesive strength even at the central portion of the transparent front plate 25 where the foaming density of urethane is low and the substantial adhesion area between the urethane foam 29 and the resin film 27 is reduced. That is, the adhesive strength of the easy-adhesion layer 32 compensates for the fact that the foaming density of urethane is low and the substantial adhesion area between the urethane foam 29 and the resin film 27 is reduced. In addition, the adhesive strength between the urethane foam 29 and the resin film 27 can be made more reliable, and as a result, the adhesive strength of the transparent front plate 25 can be maintained and guaranteed over a long period of time.

Further, when the easy-adhesion layer 32 is composed of an adhesive, when it is dried and cured, it becomes a high-strength layer, and the cured easy-adhesion layer 32 becomes an additional reinforcing layer as shown in FIG. Thereby, generation | occurrence | production of the line which crosses the hair line 28b by the tape inner edge 30c of the double-sided tape 30 can be prevented more reliably.

As described above, the present invention includes a refrigerator body having a heat insulating property and a door, and the door covers the inner box frame positioned inside the refrigerator body with the door closed, and the inner box frame. A transparent front plate with a colored layer disposed on an edge frame of the inner box frame, and urethane foam filled and foamed in a space formed by the transparent front plate and the inner box frame. Further, the transparent front plate is bonded and held to the urethane foam, and the outer peripheral portion of the transparent front plate is bonded to the edge frame of the inner box frame with a double-sided tape.

Thereby, first, in addition to the adhesive with urethane, the transparent front plate is also adhered and held to the edge frame of the inner box frame via the double-sided tape, so that the transparent front plate is more firmly adhered and held. And even if water splashes on the door edge, this water is blocked from entering inward by the double-sided tape that bonds the transparent front plate and the edge of the inner box frame. And prevent peeling of the adhesive and the transparent front plate. Therefore, it is possible to ensure the maintenance of the adhesive strength of the transparent front plate over a long period of time.

Also, since the transparent front plate has a colored layer in terms of design, it can have a deep appearance and the design is improved. Furthermore, by eliminating the transparent front plate insertion part that covers the peripheral edge of the transparent front plate as in the past, the transparent front plate insertion part does not impair the design, so the whole surface has a flat appearance and a clean appearance. can do. Further, since there is no transparent front plate insertion portion, dust, dust, and the like deposited and deposited on the boundary portion between the transparent front plate insertion portion and the transparent front plate as in the prior art are eliminated. Therefore, the initial high designability can be maintained as it is over a long period of time.

In the present invention, a transparent front plate with a colored layer may be formed by attaching a resin film having a colored layer such as a pattern to the inner surface of the transparent front plate with an adhesive.

Thereby, since the colored layer is formed on the resin film, the colored layer can be formed by a roller or the like, the adhesive strength to the resin film can be ensured, and the resin film can be reliably prevented from peeling off. . Thereby, when the resin film is interposed between the transparent front plate and the urethane foam, the colored layer is peeled off from the film and the peeling of the transparent front plate from the urethane foam caused by this peeling can be prevented. . Therefore, it is possible to ensure the maintenance of the adhesive strength of the transparent front plate over a long period of time.

Moreover, even if the transparent front plate is a glass plate and may break for some reason, the glass piece is adhered to the resin film to prevent scattering, and safety is also improved.

In addition, since a colored layer such as a pattern is formed on the resin film inside the transparent front plate in terms of design, a fine pattern such as a hairline that could not be expressed by the method of printing a pattern directly on the transparent front plate is also formed. And can significantly improve the design.

Further, the present invention provides a double-sided tape that bonds the transparent front plate and the edge frame of the inner box frame to the horizontal tape portion arranged along the upper and lower horizontal edge portions of the transparent front plate and the left and right edge portions of the transparent front plate. You may comprise from the perpendicular | vertical tape part arrange | positioned along. Furthermore, it arrange | positions so that the short side surface of a perpendicular | vertical tape part may abut on the long side surface of the horizontal tape part of this double-sided tape.

As a result, even if the door edge is splashed with water, the double-sided tape is placed over the entire length of the door at the top of the door where water easily enters inward. Can be reliably prevented, and the reliability of the adhesion and retention of the transparent front plate can be improved.

Further, the present invention may be provided such that the inner edge of the double-sided tape protrudes beyond the inner edge of the edge frame to the adhesive surface between the urethane foam and the resin film.

Thus, even if the urethane foam undergoes thermal shrinkage, it is possible to prevent the resin film from being peeled off or torn at the inner edge portion of the foam urethane edge due to the peeling force caused by the thermal shrinkage. And the reliability of adhesion holding | maintenance of a transparent front board can be improved, and designability can also be maintained in a favorable state.

In the present invention, the tape outer edge of the double-sided tape may be provided within a range of 5 mm from the outer edge of the transparent front plate.

As a result, even if the transparent front plate is a glass plate and its end portion may break for some reason, the fragments are adhered to the double-sided tape to prevent scattering. Safety at the time can be improved.

Further, according to the present invention, the tape bonding surface of the edge frame of the inner box frame includes a flat portion located on the outer edge side of the edge frame and a plurality of grooves located on the inner edge side of the edge frame and opened to the inner edge side of the edge frame. It's okay.

Thus, when the double-sided tape is affixed to the edge frame of the inner box frame, bubbles that are likely to be generated between the double-sided tape and the edge frame escape from the plurality of grooves. Therefore, it is possible to reliably bond the double-sided tape without bubbles, and the adhesive strength of the transparent front plate can be further improved.

In the present invention, the foam density of the outer peripheral portion of the transparent front plate of urethane foam may be higher than the foam density of the central portion.

Thus, the film outer peripheral portion of the transparent front plate is bonded to the skin layer having a high foaming density of urethane foam, and the adhesive density is high and strong. Therefore, even when used for a long period of time, the adhesion between the resin film of the transparent front plate and the urethane foam is maintained, and the maintenance of the adhesive strength of the transparent front plate with a film can be ensured over a long period of time.

Moreover, this invention is good also as a structure which has the adhesive strength of a resin film and foaming urethane at least 1.0 g / cm < ² > or more.

Thereby, even if the urethane foam undergoes thermal shrinkage, the adhesive strength between the resin film and the urethane foam can be reliably ensured, and the adhesive strength of the transparent front plate can be maintained and ensured over a long period of time.

In addition, the present invention provides a resin film and urethane foam by interposing an adhesive on the surface of the foamed urethane side of the resin film formed with a colored layer attached to the inner box frame side of the transparent front plate via an adhesive. May be glued.

This strengthens the adhesive strength between the resin film and urethane foam. By securing the adhesive strength with this adhesive, the adhesive strength of the transparent front plate can be maintained and guaranteed over a long period of time, as the actual adhesive area between the urethane foam and the resin film decreases due to the foaming of urethane. Can do.

Further, in the present invention, the resin film may be a polyethylene terephthalate film, and the adhesive for bonding with urethane foam may be a urethane adhesive or a polyester adhesive.

Since polyethylene terephthalate has high mechanical strength, the resin film itself does not break due to aging due to thermal contraction of urethane foam. Moreover, since polyethylene terephthalate, urethane, and polyester have similar solubility parameters, the adhesive strength between them becomes strong, and the guarantee of maintaining the adhesive strength can be further improved.

Further, the present invention provides a transparent front plate support piece that is in contact with the lower end surface of the transparent front plate without jumping forward from the front surface of the transparent front plate to a portion located on the lower end surface of the transparent front plate, of the edge frame of the inner box frame. May be provided.

This allows the transparent front plate to be supported on its weight by the transparent front plate support piece of the inner box frame, so that abnormal situations such as falling of the transparent front plate can be reliably prevented. Further, since the transparent front plate support piece does not protrude from the front surface of the transparent front plate, the design and the flatness of the entire surface can be maintained.

In the present invention, a chromium vapor deposition layer may be formed on the resin film.

Thereby, rust generation of the vapor deposition layer starting from the end face of the resin film and the vapor deposition layer can be prevented.

In the present invention, an easy adhesion layer may be formed on the surface of the resin film on the urethane foam side.

The easy adhesion layer formed on the surface of the resin film on the urethane foam side provides a strong adhesive strength between the resin film and the urethane foam, and prevents the resin film and the urethane foam from peeling off. Therefore, it is possible to ensure the maintenance of the adhesive strength of the transparent front plate over a long period of time.

In the present invention, an oxidation aid may be added to the surface of the colored resin film to which the double-sided tape is bonded.

The double-sided tape provided to improve the adhesive strength has a relatively weak adhesive force to the resin film, so that when the release paper of the double-sided tape is peeled off, the double-sided tape may be peeled off from the resin film, and workability is lowered. However, by adding an oxidizing aid to the surface of the resin film to which the double-sided tape is bonded, the adhesion between the double-sided tape and the resin film becomes strong with hydrogen bonding. Therefore, it is possible to prevent the double-sided tape itself from being peeled off from the resin film when the release paper of the double-sided tape is peeled off, thereby eliminating the deterioration of workability and improving the productivity.

In addition, the present invention performs a hairline process on the resin film and provides a reinforcing layer that suppresses local uneven load applied to the resin film from the foamed urethane through the inner edge of the double-sided tape on the surface of the resin film on the urethane foam side. Good.

Foaming of foamed urethane applied to the resin film via the inner edge of the double-sided tape protruding to the adhesive surface between the foamed urethane and the resin film by providing a reinforcing layer on the foamed urethane side surface of the resin film that has undergone hairline processing Suppresses local uneven load due to pressure. Further, it is possible to suppress the occurrence of flaws that may occur across the hairline along the inner edge of the double-sided tape due to local uneven load, and to maintain the hairline in a clean state.

In the present invention, the reinforcing layer may be disposed between the resin film and the double-sided tape. Thereby, since it can suppress that a local unbalanced load is directly applied to a resin film from the inner edge end of a double-sided tape, the hairline can be effectively prevented from being damaged.

In the present invention, the reinforcing layer may be disposed between the double-sided tape and the urethane foam. Thereby, the foaming pressure itself applied to the inner edge of the double-sided tape can be reduced, and the hair line can be prevented from being scratched.

In the present invention, the reinforcing layer may be formed of a transparent resin film, and the reinforcing layer can be easily formed only by laying the transparent resin film.

Further, the present invention may be constituted by a hardened layer of an adhesive having a reinforcing layer applied to the inner surface of the resin film. Thus, a reinforcing layer can be formed by applying an adhesive to the resin film and curing it.

As described above, the present invention can adhere and hold the transparent front plate of the door over a long period of time, enhance the designability, and maintain the high designability as it is, and can be used as a general purpose or commercial refrigerator or wine cooler. Is also widely applicable.

DESCRIPTION OF SYMBOLS 1 Refrigerator body 2 Outer box 3 Inner box 4,29 Urethane foam 5 Refrigerating room 6 Switching room 7 Ice making room 8 Freezing room 9 Vegetable room 10, 11, 12, 13, 14 Door 16 Cooling room 17 Cooler 18 Air blower fan 19 Compression Machine 20 Radiation pipe 21 Capillary tube 23 Inner box frame 24 Edge frame 24a Flat part 24b Groove 24c End face 24d Transparent front plate support piece 24e Inner edge 25 Transparent front plate 26, 26a Adhesive 27 Resin film 28, 28a Colored layer 30 Double-sided tape 30a Horizontal tape portion 30b Vertical tape portion 30c Inner edge 32, 32a Easy adhesion layer 33 Reinforcing layer 101 Door 102 Colored layer 103 Colored glass plate 104 Front plate 105 Inner box frame 106 Frame body 107 Urethane foam 108 Front plate insertion portion

Claims (20)

A refrigerator main body having a heat insulating property and a door are provided, and the door has an inner box frame positioned inside the refrigerator main body with the door closed, and an edge of the inner box frame so as to cover the inner box frame. It consists of a transparent front plate with a colored layer arranged in a frame, and foamed urethane filled and foamed in the space formed by the transparent front plate and the inner box frame, and the transparent front plate adheres to and holds the foamed urethane. In addition, the outer peripheral portion of the transparent front plate is bonded to the edge frame of the inner box frame with a double-sided tape. The refrigerator of Claim 1 which affixed the resin film in which the colored layer was formed on the said inner box frame side of the said transparent front board through the adhesive agent. The double-sided tape is composed of a horizontal tape portion arranged along the upper and lower horizontal edge portions of the transparent front plate and a vertical tape portion arranged along the left and right edge portions of the transparent front plate, and the long side of the horizontal tape portion The refrigerator of Claim 1 arrange | positioned so that the short side surface of the said perpendicular | vertical tape part may contact | abut on a side surface. 3. The double-sided tape according to claim 2, wherein the double-sided tape is arranged so that an inner edge of the double-sided tape protrudes to an adhesive surface between the foamed urethane filled portion inside the inner edge of the edge frame and the resin film. refrigerator. The refrigerator according to claim 1, wherein the double-sided tape has an outer edge of the double-sided tape located within a range of 5 mm from an outer edge of the transparent front plate. A tape bonding surface of the edge frame of the inner box frame includes a flat portion located on an outer edge side of the edge frame of the edge frame, and a plurality of openings that are located on the inner edge side of the edge frame and open to the inner edge side of the edge frame. The refrigerator of Claim 1 provided with the groove | channel. The refrigerator according to claim 1, wherein the urethane foam has a foam density at an outer peripheral portion of the transparent front plate that is higher than a foam density at a central portion. The refrigerator according to claim 2, wherein the adhesive strength between the resin film and the urethane foam is at least 1.0 g / cm ² or more. The refrigerator according to claim 2, wherein an easy adhesion layer is formed on a surface of the resin film on the urethane foam side. A refrigerator main body having a heat insulating property and a door are provided, and the door has an inner box frame positioned inside the refrigerator main body with the door closed, and an edge of the inner box frame so as to cover the inner box frame. A transparent front plate with a colored layer disposed in a frame; a resin film formed with a colored layer attached to the inner box frame side of the transparent front plate via an adhesive; the transparent front plate and the inner box frame The transparent front plate is bonded to and held by the foamed urethane, and an adhesive is interposed on the foamed urethane side surface of the resin film to form the resin. A refrigerator in which a film and the urethane foam are bonded. The refrigerator according to claim 10, wherein the resin film is a polyethylene terephthalate film, and the adhesive that bonds the resin film and the urethane foam is a urethane adhesive or a polyester adhesive. A transparent front plate support piece that is in contact with the lower end surface of the transparent front plate without jumping forward from the front surface of the transparent front plate to a portion located on the lower end surface of the transparent front plate in the edge frame of the inner box frame The refrigerator according to claim 10 provided. The refrigerator of Claim 10 which formed the chromium vapor deposition layer in the said resin film. The refrigerator according to claim 10, wherein an easy-adhesion layer is formed on a surface of the resin film on the urethane foam side. The refrigerator of Claim 2 which added the oxidation adjuvant to the surface of the said resin film which adhere | attaches the said double-sided tape. A reinforcing layer for applying a hairline process to the resin film and suppressing a local uneven load applied to the resin film from the foamed urethane through the inner edge of the double-sided tape on the surface of the resin film on the urethane foam side. The refrigerator according to claim 4 formed. The refrigerator according to claim 16, wherein the reinforcing layer is disposed between the resin film and the double-sided tape. The refrigerator according to claim 16, wherein the reinforcing layer is disposed between the resin film and the double-sided tape and the urethane foam. The refrigerator according to claim 16, wherein the reinforcing layer is made of a transparent resin film. The said reinforcement layer is a refrigerator of Claim 16 comprised with the hardened layer of the said adhesive agent given to the said transparent front board side of the said resin film.

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