Household electrical appliance, refrigerator, and electric vacuum cleaner

By adopting a laminated structure of a regenerated resin layer and a native resin layer in home appliances, combined with vacuum forming and surface pattern design, the problem of color revealing in the curved part is solved, the proportion of regenerated resin used and product appearance quality is improved, and the hygiene is ensured.

CN120530018APending Publication Date: 2025-08-22HITACHI GLOBAL LIFE SOLUTIONS INC
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Patent Information

Application Number
CN202480007009.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-09-21
Filing Date
2024-03-05
Publication Date
2025-08-22

AI Technical Summary

Technical Problem

Recycled resins are prone to mix foreign matters in household appliances, and their hygiene concerns are difficult to control, affecting their appearance and hygiene, especially in the curved part, the color of the native resin is easily revealed.

Method used

The laminated resin member including a regenerated resin layer and a native resin layer is used to control the color difference of the native resin layer in the bent portion to be 2.0 or less, preferably 1.5 or less by vacuum forming, and a pattern is provided on the surface of the native resin layer or a light-transmitting structure is used to cover the bent portion to ensure that the brightness of the native resin layer is higher than that of the regenerated resin layer.

Benefits of technology

Effectively hide the color of recycled resin, increase the proportion of recycled resin use, improve product appearance quality and hygiene, and avoid direct contact of recycled resins in the food.

✦ Generated by Eureka AI based on patent content.

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Abstract

The purpose of the present invention is to improve the use ratio of a regenerated resin by preventing a user from visually recognizing the use of the regenerated resin in a resin component which is used as a household electrical appliance product and is manufactured by vacuum molding or the like. A household electrical appliance product is provided with a resin member which is a laminated resin member including a regenerated resin layer and a primary resin layer, and which has a flat surface portion and a curved surface portion having a structure in which a resin structure is stretched toward the flat surface portion. The color difference between the curved surface portion and the flat surface portion in the primary resin layer disposed on the surface of the resin member is 2.0 or less.
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Description

Technical Field

[0001] The present disclosure relates to household appliances, refrigerators, and electric vacuum cleaners. Background Art

[0002] From the viewpoint of effective utilization of resources, it is sought to recycle waste plastics into recycled plastics (recycled resins).

[0003] Patent Document 1 discloses an inner box material for a heat-insulating box such as a refrigerator that contains recycled polyethylene terephthalate resin (PET resin), which has excellent chemical resistance. Patent Document 1 also discloses a method in which the inner box is made of virgin polyethylene terephthalate resin on the inside and the side in contact with the foam insulation is made of polyethylene terephthalate resin containing recycled polyethylene terephthalate resin.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2002-22352 Summary of the Invention

[0007] Problems to be solved by the invention

[0008] Recycled resin inevitably contains foreign matter. Therefore, in order to make the foreign matter exposed on the surface of the recycled resin invisible, the recycled resin is usually treated to a color such as black or gray.

[0009] Furthermore, recycled resins may have hygienic concerns. Therefore, in products such as refrigerators that store food, it is currently difficult to accept the use of recycled resins on the surfaces of parts that may come into direct contact with food.

[0010] The inner box of the refrigerator is formed by vacuum forming. When the vacuum forming process is performed after preparing a panel made of a double layer of recycled resin (black, gray, etc.) and virgin material (which can be freely selected in color), the panel is stretched at the corners and edges where it is most curved.

[0011] In the stretched sections, the virgin material becomes thinner than in the rest of the piece, sometimes revealing the color of the recycled resin inside.

[0012] The present disclosure aims to increase the use ratio of recycled resin by making it impossible for users to visually recognize that recycled resin is used in resin parts for home appliances produced by vacuum forming or the like.

[0013] Solutions to Problems

[0014] The household appliance product disclosed herein has a resin component, which is a laminated resin component including a recycled resin layer and a virgin resin layer and has a flat portion and a curved portion. The curved portion has a structure in which the resin structure is stretched toward the flat portion, and the color difference between the curved portion and the flat portion in the virgin resin layer arranged on the surface of the resin component is less than 2.0. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the refrigerator according to Example 1.

[0016] Figure 2 This is a partial front view showing the interior of the refrigerator of Example 1.

[0017] Figure 3 It is a partial perspective view showing the interior of the refrigerator of Example 1.

[0018] Figure 4 It means in Figure 2 A partial front view of a refrigerator with food shelves removed.

[0019] Figure 5 Yes Figure 4 A cross-sectional view of the interior of a refrigerator.

[0020] Figure 6 It means in Figure 4 A partial front view of the refrigerator with the cold air duct panel removed.

[0021] Figure 7 This is a schematic cross-sectional view showing a resin component formed into two layers by vacuum forming.

[0022] Figure 8 It is a partial front view showing a modified example of the cold air duct panel.

[0023] Figure 9 It is a partial front view showing the interior of the refrigerator of the second modification.

[0024] Figure 10 It is an exploded perspective view showing a modified example of the food rack.

[0025] Figure 11 It is an overall perspective view showing the electric vacuum cleaner of Example 2. DETAILED DESCRIPTION

[0026] Hereinafter, embodiments will be described using the drawings.

[0027] Example 1

[0028] Figure 1 This is a front view of the refrigerator according to Example 1.

[0029] As shown in this figure, refrigerator 1 has an open front body 10 and includes storage compartments, from top to bottom, in the order of a refrigerator compartment 2, an ice-making compartment 3 arranged side by side, an upper freezer compartment 4, a lower freezer compartment 5, and a vegetable compartment 6. Hereinafter, the ice-making compartment 3, the upper freezer compartment 4, and the lower freezer compartment 5 are collectively referred to as the freezer compartment 7.

[0030] The front opening of the refrigerator compartment 2 is opened and closed by rotating refrigerator compartment doors 50a and 50b, which are divided into left and right parts. The front openings of the ice compartment 3, upper freezer compartment 4, lower freezer compartment 5, and vegetable compartment 6 are opened and closed by pull-out ice compartment door 60, upper freezer compartment door 70, lower freezer compartment door 80, and vegetable compartment door 90, respectively. Pull-out containers are respectively provided on these pull-out doors. Optical-opaque resin materials can be used as pull-out containers. Door hinges (not shown) are provided at the top and bottom of the refrigerator compartment 2. The upper door hinge is covered by a door hinge cover 16.

[0031] The refrigerator compartment 2 is separated from the ice-making compartment 3 and the upper freezer compartment 4 by an insulating partition wall 28. The lower freezer compartment 5 is separated from the vegetable compartment 6 by an insulating partition wall 29. In addition, an insulating partition wall 30 is arranged on the front side between the ice-making compartment 3 and the upper freezer compartment 4 and the lower freezer compartment 5. The insulating partition wall 30 is used to block the gap generated between the lower surface of the ice-making compartment door 60 and the upper freezer compartment door 70 and the upper surface of the lower freezer compartment door 80 and prevent the circulation of air inside and outside the box. An insulating partition wall 31 is arranged between the ice-making compartment door 60 and the upper freezer compartment door 70. The insulating partition wall 31 is used to block the gap generated between the ice-making compartment door 60 and the upper freezer compartment door 70 and prevent the circulation of air inside and outside the box. In addition, on the inside of the box (on the refrigerator door 50b side) of the refrigerator compartment door 50a. Figure 1 The heat-insulating partition wall 36 is rotatably mounted on the inside of the refrigerator (the middle is the right end). The heat-insulating partition wall 36 is used to block the gap between the refrigerator doors 50a, 50b when the refrigerator doors 50a, 50b are closed and prevent the circulation of air inside and outside the refrigerator.

[0032] Figure 2 It is a partial front view showing the interior of the refrigerator of this embodiment.

[0033] As shown in this figure, the interior of the refrigerator body 10 is provided with an inner box 210 and Figure 1The space enclosed by the refrigerator compartment doors 50a and 50b is equipped with a cold air duct panel 220, a food shelf 230, a water container for ice making 240, and a fresh ice compartment 250. The outer surface of the refrigerator 1 is formed by an outer box 300 made of metal, such as steel plate. Insulating material, such as foam insulation or vacuum insulation, is provided between the inner box 210 and the outer box 300. The inner box curved surface 210a and the inner box protrusion 210c are part of the inner box 210. The inner box curved surface 210a is exposed above the cold air duct panel 220. The inner box protrusion 210c supports the two ends of the food shelf 230.

[0034] The following Figure 5 The inner box curved surface portion 210b shown is covered by the cold air passage panel 220. Therefore, it can be said that at least the inner box curved surface portion 210b is covered by the cold air passage panel 220.

[0035] The inner box curved surface 210b is at a height that is easily accessible to the user. Figure 2 The cold air passage panel 220 can effectively prevent the degradation of the appearance design due to the provision of a recycled resin layer in the inner box 210 .

[0036] In addition, the items placed on the food rack 230 are not limited to food, and the food rack 230 may be simply referred to as a "rack."

[0037] Figure 3 It is a partial perspective view showing the interior of the refrigerator of this embodiment.

[0038] In this figure, the Figure 2 Same structure.

[0039] Figure 4 It means in Figure 2 A partial front view of the refrigerator 1 with the food shelf removed.

[0040] like Figure 4 As shown, the cold air passage panel 220 is an integral body that covers the inner wall of the inner box 210. The cold air passage panel 220 has four cold air openings. The inner box 210 has an inner box protrusion 210c.

[0041] Figure 5 Yes Figure 4 A cross-sectional view of the interior of the refrigerator 1.

[0042] exist Figure 5 In the figure, the coverage is shown Figure 4 The figure also shows the ice making water container 240, the fresh ice shelf 510 on the upper surface of the fresh ice compartment 250, and the heat-insulating partition wall 28 forming the bottom portion of the refrigeration compartment 2. Also shown is the foot portion 520 located at the lowest portion (outside the refrigerator) of the refrigerator body 10. The inner box 210 has an inner box curved surface portion 210b.

[0043] Figure 6 It means in Figure 4 A partial front view of the refrigerator with the cold air path panel 220 removed.

[0044] like Figure 6 As shown, the inner box 210 has inner box curved surface portions 210a and 210b, an inner box convex portion 210c, and an inner box vertex portion 210d. The inner box curved surface portion 210a is the curved surface portion connecting the rear and top surfaces of the inner box. The inner box curved surface portion 210b is the curved surface portion connecting the rear and side surfaces of the inner box. The inner box vertex portion 210d is the curved surface portion connecting the inner box curved surface portion 210a and the inner box curved surface portion 210b.

[0045] Figure 7 This is a schematic cross-sectional view showing a resin component formed into two layers by vacuum forming.

[0046] In this figure, the resin component 710 is composed of a recycled resin layer 712 and a virgin resin layer 714. The curved surface 710b is equivalent to Figure 6 The inner box curved surface portions 210a, 210b and the inner box vertex portion 210d of the inner box 210 are curved portions. The flat portion 710a is the other portion and is a flat portion.

[0047] When manufacturing the inner box 210 of the refrigerator 1 of this embodiment, first, recycled resin material and virgin resin material are used to form a flat-plate laminated resin component through double-layer molding. Then, the obtained flat-plate laminated resin component is deformed into the shape of the inner box through vacuum forming.

[0048] In this specification, "recycled resin material" refers to a material containing recycled resin within the resin material, for example, a material containing recycled resin at a ratio of 20% by mass or greater, preferably 50% by mass or greater, and most preferably 100% by mass. Furthermore, "virgin resin material" refers to a material containing a lower ratio of recycled resin than recycled resin material, for example, less than 20% by mass, preferably less than 10% by mass, and most preferably 0% by mass (unused material that has not been used in the product). When manufacturing resin components 710 that may come into contact with food, such as inner box 210, a 0% ratio is preferred for ensuring sanitation.

[0049] Recycled resin materials may appear black, gray, etc. due to impurities. On the other hand, virgin resin materials can be freely colored and adjusted.

[0050] When the resin component 710 is set as the inner box 210 of the refrigerator 1, by arranging the original resin layer 714 on the inside of the box, the color of the recycled resin layer 712 can be prevented from being recognized when the user observes the inside of the box, and the recycled resin can be prevented from directly contacting the food.

[0051] In the curved portion 710b that is bent by vacuum forming, the resin may be stretched and the thickness of the original resin layer 714 may become smaller than that of the flat portion 710a. In this case, the color of the recycled resin layer 712 may be seen through. Figure 6 The resin of the inner box curved surface portions 210a, 210b, the inner box convex portion 210c, and the inner box apex portion 210d of the inner box 210 is easily stretched, and the thickness of the original resin layer 714 is often reduced. Among them, the inner box apex portion 210d is particularly easily stretched, and the thickness is likely to be reduced.

[0052] In this embodiment, the color of virgin resin layer 714 is selected so that the color difference between the flat surface portion 710a and the curved surface portion 710b of virgin resin layer 714 disposed on the surface of resin member 710 is 2.0 or less, and preferably 1.5 or less. Furthermore, virgin resin layer 714 has a higher brightness than recycled resin layer 712.

[0053] Furthermore, in the virgin resin layer 714 or the recycled resin layer 712, for example, a pigment is preferably added in an amount of 2 parts by weight to 10 parts by weight per 100 parts by weight of the virgin resin material. A more preferred amount is 3 parts by weight to 7 parts by weight. Titanium dioxide is a preferred pigment. Polypropylene, for example, can be used for the virgin resin layer 714.

[0054] Color difference was calculated according to JIS K5600-4-6:1999 "General Test Methods for Paints - Part 4: Visual Properties of Coatings - Section 6: Colorimetry (Calculation of Color Difference)". Brightness was calculated according to JIS Z8721-1993 "Color Display Methods - Display Based on Three Attributes".

[0055] When the color difference is 2.0 or less, and preferably 1.5 or less, the user will find it difficult to discern color differences and will not perceive unnatural color differences. Furthermore, increasing the brightness of the virgin resin layer 714 makes the color of the recycled resin layer 712 underneath difficult to discern, so it is preferable to increase the brightness of the virgin resin layer 714. For example, the color difference and brightness can be adjusted by adjusting the light transmittance and thickness of the recycled resin layer 712 forming the curved surface portion 710b, or by adjusting the color of the recycled resin layer 712.

[0056] Furthermore, if a pattern such as a mosaic or marble pattern with a plurality of colors arranged irregularly is provided on the surface of the virgin resin layer 714, even if the color of the recycled resin layer 712 shows through, the color of the recycled resin layer 712 will not be noticeable. Therefore, it is preferable to provide a pattern such as a mosaic or marble pattern with a plurality of colors arranged irregularly on the surface of the virgin resin layer 714. In this case, the color of the irregularly arranged pattern is preferably the same as or similar to the color of the recycled resin layer 712, including black and / or gray.

[0057] While this embodiment illustrates an inner box 210 formed by vacuum forming, the present invention is also applicable to resin parts formed by a forming method in which the outermost resin layer of one or both virgin resin layers 714 is deformed into a plate shape, resulting in the thickness of the curved portion (curved surface) of the resin being smaller than that of other portions, and products including such resin parts, particularly household appliances. As described above, it is believed that the thickness of the inner box vertex 210d, which connects the two inner box curved surface portions, is more easily reduced than that of the inner box curved surface portions 210a and 210b, which connect the two flat surface portions. Therefore, from the perspective of design, it is preferable to design the thickness so that the inner box vertex 210d does not show through (for example, the color difference from the flat surface portion is less than 2.0, preferably less than 1.5). In this case, the inner box 210 as a whole can easily prevent the recycled resin layer 712 from showing through.

[0058] Furthermore, to balance design appeal and thin-walled inner boxes, it is preferable to make only a portion of the inner box curved surfaces 210a, 210b and the inner box vertex 210d opaque, with the remaining portion covered by other components. For example, the inner box curved surfaces 210a, 210b are opaque, while the inner box vertex 210d is opaque (for example, with a color difference of greater than 2.0 or greater than 1.5 from the flat surface). At the same time, the inner box vertex 210d can be covered by providing an opaque structure, such as a cold air duct panel 220, on the side viewed by the user (the front side in the case of refrigerator 1). In this case, the increase in thickness of the inner box 210 and the decrease in the volume of the refrigerator 1 can be suppressed, and the leakage of the recycled resin layer 712 can be suppressed. In addition to the above-mentioned embodiment, an example of an opaque structure is a pull-out container provided in the vegetable compartment 6. This drawer container can cover the lower inner box curved surface portions 210 a and 210 b and the inner box vertex portion 210 d of the inner box 210 .

[0059] Another method of preventing leakage is being studied by making the thickness of the flat-plate laminated resin component prepared by two-layer molding uneven, specifically by pre-preparing a thicker thickness in the portion expected to be thinned by vacuum forming, etc. In this case, the pre-prepared thickness makes it difficult for that portion to deform during vacuum forming, and the area near the pre-prepared thickened portion is stretched, ultimately making it difficult to reduce the possibility of leakage. Therefore, it is preferable that the pre-prepared laminated resin component have a uniform thickness.

[0060] (Variation 1)

[0061] Figure 8 It is a partial front view showing a modified example of the cold air duct panel.

[0062] In this figure, Figure 4 Likewise, the state with the food shelf removed is shown.

[0063] exist Figure 8 In, with Figure 4 Different, the upper part of the cold air path panel 820 covers Figure 4 Thus, even if the color of the recycled resin used for the inner box curved surface portion 210a is visible, it can be prevented from being recognized by the user.

[0064] (Variation 2)

[0065] Figure 9 It is a partial front view showing the interior of the refrigerator of the second modification.

[0066] In this figure, a state where a food rack 930 is provided is shown.

[0067] exist Figure 9 In the embodiment, support covers 930a are provided on the lower surfaces of both ends of the food rack 930. Therefore, it is difficult for the user to see Figure 2 Because the inner box protrusion 210c also includes a curved portion, its thickness decreases during vacuum forming, potentially causing leakage. The support cover 930a prevents the color of the recycled resin used for the inner box protrusion 210c from being discerned by the user.

[0068] In addition, Figure 9 In the embodiment, a support cover 930a is provided on the lower surface of the food rack 930, but the refrigerator 1 of this modified example is not limited to this structure. Support covers can also be provided on the upper surfaces of the two ends of the food rack 930, and the food rack 930 can be set in the form of hooking the support cover on the upper surface of the inner box protrusion 210c, and the side surface of the inner box protrusion 210c is also covered by the support cover.

[0069] (Variation 3)

[0070] Figure 10It is an exploded perspective view showing a modified example of the food rack.

[0071] In this figure, a cantilever type food rack 1011 is used. The food rack 1011 has an upper surface portion 1013, a side portion 1014, and a hook 1015. The food rack 1011 is configured to be fixed by inserting the hook 1015 into a hole 1016 provided in the support column portion 1012. The support column portion 1012 is composed of a pair of left and right parts and is installed in the cold air duct panel 220 (see FIG. 10). Figure 4 ) on the left and right sides of the surface or the back wall of the inner box 210 (see Figure 6 ) on both sides. Refrigerated items such as food can be placed on the upper surface portion 1013.

[0072] By using the food rack 1011 and the support column 1012 of this figure, there is no need to set Figure 2 Thus, the side surface of the inner box 210 can be made flat, the portion where the thickness of the virgin resin is reduced can be reduced, and the color of the recycled resin can be prevented from being recognized by the user.

[0073] Example 2

[0074] Figure 11 This is an overall perspective view of an electric vacuum cleaner according to Example 2. As for the suppression of leakage of recycled resin in this embodiment, the structure of Example 1 can be adopted as long as there is no obstacle.

[0075] As shown in this figure, an electric vacuum cleaner 1100 includes an electric vacuum cleaner body 1101, a hose connector 1102, a hose 1103, a handheld switch 1104 for controlling the operation of the electric vacuum cleaner 1100, an extension tube 1105 connected to the hose 1103, a suction port 1106 connected to the extension tube 1105 for sucking in dust from the cleaning surface, and a handheld operating unit 1107. The hose 1103 is connected to the electric vacuum cleaner body 1101 via the hose connector 1102. The extension tube 1105 includes a telescopic tube 1105a (zoom tube). The handheld switch 1104 and the handheld operating unit 1107 are disposed between the hose 1103 and the extension tube 1105.

[0076] Telescopic tube 1105a is a roughly rectangular shape with chamfered cross-sections, manufactured by blow molding. For such blow-molded products, for example, a multi-layer preform is produced using double-layer extrusion, and this preform is blow-molded to form the extension tube. When blow molding telescopic tube 1105a, with recycled resin on the inner diameter and virgin resin on the outer diameter layered together, the resin may be stretched at the corners (curved portions) of the roughly rectangular cross-section of telescopic tube 1105a, reducing the thickness of the virgin resin on the outer side. In this case, the color of the recycled resin may show through.

[0077] In this embodiment, the color of the virgin resin is selected so that the color difference between the straight edges (flat surfaces) and the corners (curved surfaces) of the roughly rectangular cross-section of the telescopic tube 1105a is 2.0 or less, and preferably 1.5 or less. A color difference of 2.0 or less, preferably 1.5 or less, generally prevents the user from perceiving the color difference, thus preventing the color of the recycled resin disposed inside from showing through. Furthermore, increasing the brightness of the virgin resin makes the color of the recycled resin inside difficult to discern, so increasing the brightness of the virgin resin is preferable.

[0078] Furthermore, if a pattern such as a mosaic pattern is provided on the surface of the virgin resin, even if the color of the recycled resin shows through, the color of the recycled resin is difficult to be visually recognized. Therefore, it is preferable to provide a pattern such as a mosaic pattern on the surface of the virgin resin.

[0079] Furthermore, regarding the outer periphery of the cross-section of the telescopic tube 1105a, which includes the curved and flat portions, i.e., the roughly rectangular cross-section of the telescopic tube 1105a, it is preferable that the curved portion be longer than the flat portion. This increases the radius of curvature of the curved portion. A larger radius of curvature of the curved portion prevents stretching of the curved portion during blow molding, maintains the thickness of the virgin resin layer, and prevents the color of the recycled resin disposed inside from showing through. Furthermore, a circular cross-section is most preferred. This is because a circular cross-section eliminates the presence of flat portions, resulting in a uniform force applied to the circumference of the cross-section during blow molding, thus maintaining the wall thickness of the telescopic tube 1105a.

[0080] Furthermore, examples of home appliances to which the resin component of the present disclosure can be applied include, in addition to refrigerators and electric vacuum cleaners, washing machines, microwave ovens, and the like.

[0081] Examples of materials for recycled resins and virgin resins include polyethylene (PE), polypropylene resin (PP), acrylonitrile-butadiene-styrene resin (ABS resin), and polyethylene terephthalate resin (PET resin).

[0082] As mentioned above, resin parts manufactured through vacuum forming, blow molding, and other methods have a structure in which the resin structure on the curved surface is stretched toward the flat surface of the resin part. Here, the resin structure refers to the fine structure, such as the molecular structure, of the resin. The resin structure formed by stretching through vacuum forming, blow molding, and other methods is a fine structure that can be distinguished from the high-level structure formed through injection molding.

[0083] The reason why the fine structure of the resin structure differs between vacuum molding, blow molding, etc. and injection molding is as follows.

[0084] In vacuum forming, blow molding, and other processes, the solid resin is heated and softened before deformation. This results in tension acting in a specific direction, particularly on curved surfaces, stretching the resin structure and preserving its fine structure. In contrast, in injection molding, a fluid resin is injected into a mold and solidified. Therefore, the orientation of the resin's molecules is influenced by the direction of the resin's flow within the mold. Therefore, as described above, the resin structure can be differentiated between vacuum forming, blow molding, and injection molding.

[0085] Explanation of symbols

[0086] 1—Refrigerator, 2—Refrigerator, 3—Ice making room, 4—Upper freezer, 5—Lower freezer, 6—Vegetable compartment, 7—Freezer, 10—Refrigerator body, 28, 29, 30, 31, 36—Insulation partition wall, 210—Inner box, 210a, 210b—Inner box curved surface, 210c—Inner box convex portion, 220, 820—Cold air path panel, 230, 930, 1011—Food shelf, 240—Ice making water container, 250—Fresh ice compartment, 510—Fresh ice shelf, 520—Food shelf, 710—Resin component, 710a—Flat surface, 710b—Curved surface, 712—Recycled resin layer, 714—Original resin layer, 930a—Support cover, 1012—Support column, 1016

[0087] —hole, 1015—hook, 1100—electric vacuum cleaner, 1101—electric vacuum cleaner body, 1102—hose connector, 1103—hose, 1104—hand switch, 1105—extension tube, 1105a—telescopic tube, 1106—suction port, 1107—hand operating unit.

Claims

1. A household appliance, characterized in that: A resin component is provided, wherein the resin component is a laminated resin component including a recycled resin layer and a virgin resin layer, and has a flat portion and a curved portion. The curved portion has a structure in which the resin tissue is stretched toward the flat portion. The color difference between the curved surface portion and the flat surface portion in the virgin resin layer disposed on the surface of the resin member is 2.0 or less.

2. The household appliance according to claim 1, characterized in that: The virgin resin layer contains pigment.

3. A refrigerator, characterized in that: A resin component is provided, wherein the resin component is a laminated resin component including a recycled resin layer and a virgin resin layer, and has two or more flat portions and a curved portion. The curved portion has a structure in which the resin tissue is stretched toward the flat portion. The curved portion is a portion connecting the two planar portions. The color difference between the curved portion and the flat portion in the virgin resin layer provided on the surface of the resin member is partially 2.0 or less, and the remaining portion exceeds 2.

0. A structure covering the remaining portion is provided.

4. A refrigerator, characterized in that: A resin component is provided, wherein the resin component is a laminated resin component including a recycled resin layer and a virgin resin layer, and has a flat portion and a curved portion. The curved portion has a structure in which the resin tissue is stretched toward the flat portion. The resin member is an inner box forming a storage compartment with an opening at the front side. The storage room is provided with a cold air path panel or a pull-out container. At least a portion of the curved surface portion of the inner box is covered by the cold air passage panel or the drawer container.

5. An electric vacuum cleaner comprising a resin component, the resin component being a laminated resin component including a recycled resin layer and a virgin resin layer, and having a flat surface portion and a curved surface portion, The electric vacuum cleaner is characterized in that: The curved portion has a structure in which the resin tissue is stretched toward the flat portion. The resin component is a telescopic tube, The curved portion is longer than the flat portion in an outer periphery of a cross section including the curved portion and the flat portion.

6. A refrigerator, characterized in that: A resin component is provided, wherein the resin component is a laminated resin component including a recycled resin layer and a virgin resin layer, and has a flat portion and a curved portion. The curved portion has a structure in which the resin tissue is stretched toward the flat portion. The resin component is an inner box, A frame is provided in the inner box. The inner box has an inner box convex portion as the curved surface portion, The frame is supported by the inner box protrusion, The frame has a support cover, At least the front side of the inner box convex portion is covered by the support portion cover.

Citation Information

Patent Citations

  • Heat insulating box

    JP2002022352A