refrigerator
By minimizing front handles and using in-mold molded, detachable decorative surfaces with distinct colors and textures, the refrigerator maintains design unity and usability while reducing handle-related design impairments and damage risks.
Patent Information
- Application Number
- JP2023008743
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-01-24
- Publication Date
- 2025-08-20
- Estimated Expiration
- 2043-01-24
AI Technical Summary
Existing refrigerators with decorative sheets near handles risk impairing design unity due to multiple handles and adhesive deterioration, and thin linear portions are easily damaged during cleaning.
Minimize front handles by positioning them on less frequently used sides and incorporate a decorative surface in the gap between frequently used doors, using in-mold molding for durable, detachable design surfaces with distinct colors and textures.
Maintains design unity and usability by minimizing handles while ensuring decorative surfaces serve additional functions, reducing damage risk and manufacturing costs.
Smart Images

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Abstract
Description
[Technical Field]
[0001] The present invention relates to a refrigerator in which a design surface having an appearance different from that of the door surface is arranged near the handle of a storage compartment door. [Background technology]
[0002] A refrigerator described in Patent Document 1 is known as a refrigerator that has improved design by arranging a design surface with an appearance different from the door surface near the handle of the storage compartment door. For example, Figure 1 of the document discloses a refrigerator in which decorative sheets (sealing members) are attached near the handles of the vegetable compartment door, freezer compartment door, and ice compartment door. Regarding this decorative sheet, paragraphs 0016 to 0018 of the document state, "Each drawer-type door (...) is provided with a handle portion 31 at its upper end. A sealing member (sheet member) 61 is attached to the inclined surface around the handle portion 31 (see Figure 2).", "The surface of the sealing member 61 is printed with various patterns, such as wood grain or marble, in a variety of colors. This improves the aesthetic design of the exterior of the refrigerator 1. The sealing member 61 is also called a decorative sheet.", and "The back surface of the sealing member 61 is formed with an adhesive layer containing an adhesive. Therefore, the user can select a sealing member 61 with a desired pattern from a plurality of sealing members 61 printed with different patterns and attach it around the handle portion 31 of each door of the refrigerator 1....This allows the user to easily change the design of the front portion of the refrigerator 1 to match the interior of the room in which the refrigerator 1 is installed."
[0003] In this way, in Patent Document 1, decorative sheets (sealing members) with various patterns and colors are attached around the handles of each door, thereby changing the exterior design of the refrigerator to suit the user's preferences. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Japanese Patent Publication No. 2022-135609 Summary of the Invention [Problem to be solved by the invention]
[0005] However, as in the refrigerator shown in Figure 1 of Patent Document 1, if the handles for each door are positioned in a position visible from the front of the refrigerator and a decorative sheet with a different pattern or color from the door surface is attached near each handle, the design of the refrigerator's front face is divided into four vertically, which may impair the unity of the design of the refrigerator's front face. Furthermore, in this document, adhesive is used to attach the decorative sheet, which may peel off due to deterioration of the adhesive over time. Furthermore, as explained in paragraph 0068 of this document, "As shown in Figure 2, the sealing member 61 has two large surface portions 62 and a linear portion 63 connecting these two large surface portions 62," the decorative sheet in this document has thin linear portions, which are attached to an inclined surface that is easily accessible. Therefore, if a user touches the thin linear portions while cleaning the refrigerator, the decorative sheet may be unintentionally damaged.
[0006] Therefore, an object of the present invention is to provide a refrigerator that can maintain the same usability as current refrigerators by minimizing the number of front handles installed and arranging a design surface that also has functions other than decoration near the front handles. [Means for solving the problem]
[0007] In order to solve the above problem, the refrigerator of the present invention is a storage cabinet that comprises, from top to bottom, a first storage compartment that is opened and closed by a rotating first door, a second storage compartment that is opened and closed by a drawer-type second door, and a third storage compartment that is opened and closed by a drawer-type third door, wherein the area of the front of the second door is smaller than the area of the front of the third door, and the internal volume of a container placed in the second storage compartment is smaller than the internal volume of a container placed in the third storage compartment, wherein the first door has a handle on its bottom surface, the second door has a handle on its top surface, and the third door has no handle or has a handle on its side, the dimension of the gap between the first door and the second door is larger than the dimension of the gap between the second door and the third door, and the refrigerator has a decorative surface that is placed in the gap between the top and bottom of the first door and the second door, and the decorative surface has a color or texture that is different from that of the first door, the second door, and the third door, and has a higher brightness. [Effects of the Invention]
[0008] According to the refrigerator of the present invention, the number of front handles installed is minimized, while decorative surfaces that also serve functions other than decoration are arranged near the front handles, thereby maintaining usability equivalent to that of current refrigerators. [Brief explanation of the drawings]
[0009] [Figure 1] FIG. 1 is a front view of a refrigerator according to a first embodiment. [Figure 2] FIG. 2 is a right side view of the refrigerator of the first embodiment. [Figure 3] Cross section AA of Figure 1. [Figure 4] Cross section B-B of Figure 2. [Figure 5] FIG. 2 is a front perspective view of the ice-making compartment door (second door) of the first embodiment (with the design surface attached). [Figure 6] FIG. 2 is a rear perspective view of the ice-making compartment door (second door) of the first embodiment (with the design surface removed). [Figure 7] 1 is a cross-sectional view of the upper end portion of the ice-making compartment door (second door) of the first embodiment (with the design surface attached). FIG. [Figure 8] FIG. 8 is a rear perspective view of cross section CC of FIG. 7. [Figure 9] FIG. 10 is a right side view of the refrigerator of the second embodiment. [Figure 10] Cross section B-B of Figure 9. DETAILED DESCRIPTION OF THE INVENTION
[0010] Hereinafter, an embodiment of a refrigerator according to the present invention will be described with reference to the drawings. [Example]
[0011] A refrigerator according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 8. FIG.
[0012] <General configuration of refrigerator> First, a schematic configuration of a refrigerator 1 according to a first embodiment will be described using a front view in FIG. 1 and a right side view in FIG. 2. As shown in FIG. 1, the refrigerator 1 according to the first embodiment includes a refrigerator compartment 11, an ice-making compartment 12, an upper freezer compartment 13, a lower freezer compartment 14, and a vegetable compartment 15 as storage compartments for food and other items. Each storage compartment is closed by a rectangular door 11a, 12a, 13a, 14a, or 15a sized according to the front opening of the storage compartment. Each door also includes a handle 11b, 12b, 13b, 14b, or 15b that a user grasps when opening or closing the door. Furthermore, a rectangular leg cover 16a is installed below the door 15a of the vegetable compartment 15 to hide multiple legs 16 or casters supporting the refrigerator 1.
[0013] As shown in Fig. 2, when all the doors of refrigerator 1 are closed, the front surfaces of doors 11a to 15a and leg cover 16a are arranged on the same plane. Because the color and texture of each front surface are the same, when refrigerator 1 is viewed from the front in the state shown in Fig. 2, the user is given the impression that the refrigerator as a whole has a unified design, as shown in Fig. 1.
[0014] However, if handles are provided in a visible position on the front of each door, there is a risk that the handles will spoil the sense of unity in the design when refrigerator 1 is viewed from the front. Therefore, in this embodiment, handles 14b and 15b, which are normally used less frequently, are provided on the side of refrigerator 1 to reduce the impact that the presence of the handles has on the design of the front of the refrigerator. On the other hand, handles 11b, 12b, and 13b, which are normally used more frequently, are provided on the front of refrigerator 1, improving the usability of the doors that are used more frequently when a user of average height stands in front of refrigerator 1.
[0015] To achieve the above-described effects, in this embodiment, frequently used handles are arranged as follows. That is, as shown in the dashed line in FIG. 2 and in FIG. 3, which is a cross-sectional view taken along the line AA in FIG. 1, a recessed space (hereinafter referred to as "recess 2") is provided at the top of doors 12a and 13a, and handle 11b for refrigerator compartment 11 is provided above recess 2 and on the underside of door 11a. Handle 12b for ice-making compartment 12 is provided below recess 2 and on the upper surface of door 12a. Similarly, handle 13b for upper freezer compartment 13 is provided below recess 2 and on the upper surface of door 13. The height of the front opening of recess 2 is such that a user can easily insert their fingers (e.g., 5 to 10 cm). Therefore, in refrigerator 1 of this embodiment, handles 11b, 12b, and 13b are arranged above and below recess 2, allowing the user to grasp the desired handle through recess 2 and easily open or close the desired door.
[0016] However, even if recess 2 is provided, there is a risk that recess 2 will spoil the sense of design unity when refrigerator 1 is viewed from the front. Therefore, in refrigerator 1 of this embodiment, recess 2 is provided with design surface 3 that has a different appearance (color, texture) from the surrounding area, thereby making recess 2 stand out in a positive way and allowing recess 2 to notify the user of the positions of handles 11b, 12b, and 13b. Below, we will explain the details of each storage compartment in order, and then explain the details of design surface 3 provided in recess 2.
[0017] <Details of each storage room> The refrigerator compartment 11 is a storage compartment intended to be maintained at a temperature of approximately 0°C to 7°C and is primarily used to store fresh foods and beverages. It is located on the upper level of the refrigerator 1. The front opening of the refrigerator compartment 11 is closed by a pair of left and right doors 11a. A handle 11b is provided on the right side of the underside of the left door 11a, and a handle 11b is provided on the left side of the underside of the right door 11a. A rotation shaft 11c is provided on the left end of the left door 11a, and a rotation shaft 11c is provided on the right end of the right door 11a. Therefore, when a user inserts their finger into the handle 11b from below the door 11a through the recess 2 and pulls the handle 11b forward, the left and right doors 11a rotate around their respective rotation shafts 11c, opening the front opening of the refrigerator compartment 11.
[0018] Ice making compartment 12 is a storage compartment equipped with an ice making function and is designed to maintain a temperature of approximately -18°C to -16°C. It is located on the left side of the middle shelf of refrigerator 1. The front opening of ice making compartment 12 is closed by door 12a. Handle 12b is provided on the right side of the top surface of door 12a. Therefore, when a user inserts their finger into handle 12b from above door 12a through recess 2 and pulls handle 12b forward, a container (not shown) connected to door 12a is pulled out like a drawer, and the front opening of ice making compartment 12 is opened.
[0019] Upper freezer compartment 13 is a storage compartment intended to maintain a temperature of approximately -18°C to -16°C and is primarily used to store frozen foods. It is located on the right side of the middle section of refrigerator 1. The front opening of upper freezer compartment 13 is closed by door 13a. Handle 13b is provided on the top left side of door 13a. Therefore, when a user inserts their finger into handle 13b from above door 13a through recess 2 and pulls handle 13b forward, a container (not shown) connected to door 13a is pulled out like a drawer, and the front opening of upper freezer compartment 13 is opened.
[0020] Lower freezer compartment 14 is a storage compartment intended to maintain a temperature of approximately -18°C to -16°C and is primarily used to store frozen foods, and is located above the lower shelf of refrigerator 1. The front opening of lower freezer compartment 14 is closed by door 14a. As shown in FIG. 2, door 14a has vertically long handles 14b on both sides. When a user inserts their fingers into handles 14b from the side of door 14a and pulls handles 14b forward, a container (not shown) connected to door 14a is pulled out like a drawer, and the front opening of lower freezer compartment 14 is opened.
[0021] Vegetable compartment 15 is a storage compartment intended to maintain a temperature of approximately 4°C to 8°C and is primarily used to store fresh vegetables, and is located below the lower shelf of refrigerator 1. The front opening of vegetable compartment 15 is closed by door 15a. As shown in FIG. 2, a vertically long handle 15b is provided on the side of door 15a. Therefore, when a user inserts their finger into handle 15b from the side of door 15a and pulls handle 15b forward, a vegetable compartment container (not shown) connected to door 15a is pulled out like a drawer, and the front opening of vegetable compartment 15 is opened.
[0022] As shown in Figure 4, which is a cross-sectional view taken along the line B-B of Figure 2, handle 14b of door 14a is molded from resin part 14c, which is composed of flat and curved surfaces (i.e., has no sharp edges), and glass plate 14d is attached to the front of resin part 14c. By placing glass plate 14d at the front of door 14a and constructing the sides with smooth resin part 14c, even if a user accidentally touches the edge of door 14a while trying to grasp handle 14b, the contact area is flat, so the user will not feel uncomfortable if their finger touches the sharp-shaped front panel support part. This also applies to door 15a of vegetable compartment 15.
[0023] Here, if the upper refrigerator compartment 11 is the first storage compartment, the left and right ice-making compartments 12 and the upper freezer compartment 13 on the middle compartment are each the second storage compartment, and the upper and lower lower freezer compartments 14 and vegetable compartment 15 on the lower compartment are each the third storage compartment, the refrigerator 1 of this embodiment is designed to satisfy the following size relationship, taking into consideration the purpose of each storage compartment, for the internal volume V1 of the first storage compartment, the internal volume V2 of each of the second storage compartments, and the internal volume V3 of each of the third storage compartments.
[0024] V1 > V3 > V2 (Formula 1) As a result, the area S1 of the front surface of the first door which is the door to the first storage compartment, the area S2 of the front surface of the second door which is the door to the second storage compartment, and the area S3 of the front surface of the third door which is the door to the third storage compartment satisfy the following size relationship: Note that the area of each front surface is the area of the flat parts which are arranged on the same plane in Figure 2, and does not include the front view area of the recess 2 provided in the upper part of the second door.
[0025] S1 > S2 (Formula 2) S3 > S2 (Formula 3) Furthermore, in this embodiment, a recess 2 is provided only at the boundary between the first door and the second door, and no recess 2 is provided at the boundary between other types of doors, so the height H1 of the gap between the first door surface and the second door surface and the height H2 of the gap between the second door surface and the third door surface have the following size relationship:
[0026] H1 > H2 (Formula 4) <Details of the second door and design surface 3> Next, details of design surface 3 attached to recess 2 of second door (doors 12a, 13a) will be described using Figures 5 to 8. Note that the structure of door 12a on the left side of the middle row of refrigerator 1 and the structure of door 13a on the right side of the middle row are mirror images, with only the left and right sides reversed. Therefore, details of design surface 3 will be described below using door 12a of ice-making compartment 12 as an example.
[0027] 5 is a front perspective view of the door 12a with the decorative surface 3 attached. As shown in this perspective view, the upper part of the door 12a (second door) of this embodiment has a recessed portion 2 recessed toward the rear, and a rectangular decorative surface 3 is attached to the rear side of this recessed portion 2, which is approximately the same height as the recessed portion 2 of the door 12a and has approximately the same width as the door 12a. The decorative surface 3 of this embodiment has the following features.
[0028] (1) Features of the appearance of design surface 3 As described above, the design surface 3 of this embodiment actively highlights the recessed portion 2, and serves as a landmark for users to identify the position of the handles of the first and second doors. For this reason, a color that can be determined at a glance to be different from the color of the front faces of the doors was adopted for the design surface 3. Specifically, the color of each door front face and the color of the design surface 3 had a difference in lightness and saturation of more than 3.0 in Munsell value.
[0029] For the same reason, a hue different from those often used for refrigerator doors was adopted for design surface 3. Specifically, the hue of design surface 3 was chosen to be outside the range of the 10 hues [R (red), Y yellow, G (green), B (blue), P (purple), YR (yellow-red), GY (green-yellow), BG (blue-green), PB (purple-blue), RP (red-purple)] in the Munsell hue value.
[0030] Furthermore, a texture that can be determined at a glance to be different from the texture of the front of each door was adopted as the texture of the design surface 3. For example, if a glass plate is placed on the front of each door, the design surface 3 will have the texture of wood, stone, metal, or resin.
[0031] (2) Characteristics of the manufacturing method for design surface 3 In order to improve durability while imparting the diverse appearances described above, in-mold molding was used to manufacture the decorative surface 3 of this example. In-mold molding is a decorative molding method in which a pre-printed film is sandwiched inside an injection molding die and molded to transfer a printed pattern onto the surface of a hard resin part.
[0032] Therefore, by preparing an appropriate film, it is possible to easily manufacture the design surface 3 with the desired color and texture. Furthermore, because the design surface 3 can be formed from a hard resin, it is possible to avoid the possibility of it being easily damaged, as with the decorative sheet (sealing member) of Patent Document 1. Furthermore, as described above, when in-mold molding is selected as a method for decorating the surface of a resin part with a pattern or design, it is possible to decorate and mold the pattern or design not only on the front surface 3a of the design surface 3, but also on the curved surface 3b and side surface 3c of the design surface 3.
[0033] The decorative surface 3 made using in-mold molding is a relatively expensive resin part, but in the refrigerator 1 of this embodiment, the number of decorative surfaces 3 installed is kept to a minimum, and the size of each decorative surface 3 is kept to a minimum, so that the increase in manufacturing costs of the refrigerator 1 due to the installation of expensive decorative surfaces 3 can be suppressed.
[0034] (3) Features of the mounting method for design surface 3 In order to allow users to easily change the design surface 3 to a design of their choice, the refrigerator 1 of this embodiment has a detachable design surface 3. For this reason, the shapes of the design surface 3 and the second door are configured as shown in Figs. 6 to 8.
[0035] 6 is a rear perspective view of the door 12a before the decorative surface 3 is attached. As shown here, a plurality of upper edge claws 31 are provided on the upper edge of the rear side of the decorative surface 3, and side edge claws 32 are provided on the lower ends of the side edges of the rear side of the decorative surface 3.
[0036] 7 is an enlarged cross-sectional view of the upper part of the door 12a with the decorative surface 3 attached. As is clear from this figure, the decorative surface 3 of this embodiment has a thin structure in the front-to-rear direction, with only a number of tabs provided on the upper and side edges of the plate-like portion, so that even with the decorative surface 3 attached, the recess 2 can have a sufficient depth so as not to interfere with gripping the handle.
[0037] 8 is a rear perspective view of the door 12a with the decorative surface 3 attached, and is a view of the CC cross section of FIG. 7 from behind. As is obvious from FIGS. 7 and 8, a groove that engages with the upper edge claw 31 of the decorative surface 3 is provided on the front upper end of the door 12a, and a return claw that engages with the side edge claw 32 of the decorative surface 3 is provided on the upper side of the door 12a. Therefore, the decorative surface 3 can be easily attached to the door 12a by simply sliding the decorative surface 3 from above. Furthermore, by widening the side edge of the decorative surface 3, the engagement between the side edge claw 32 and the return claw is released, and therefore the decorative surface 3 can be easily removed from the door 12a by simply sliding the decorative surface 3 upward.
[0038] <Effects of this Example> According to the refrigerator of this embodiment described above, the number of front handles installed is minimized, while design surfaces that have functions other than decoration are arranged near the front handles, thereby maintaining usability equivalent to that of current refrigerators. [Example]
[0039] Next, a refrigerator according to a second embodiment of the present invention will be described with reference to Figures 9 and 10. Note that a duplicated description of points common to the first embodiment will be omitted.
[0040] In refrigerator 1 of Example 1, as shown in Fig. 2, handle 14b was provided on the side of door 14a and handle 15b was provided on the side of door 15a, but in refrigerator 1 of this example, these handles are omitted as shown in Fig. 9. In this case, there is no need to support glass plate 14d or form handle 14b with resin part 14c, so door 14a can be formed by simpler processing, such as press processing steel plate 14e, as shown in Fig. 10, which is a BB cross-sectional view of Fig. 9.
[0041] In this embodiment, since it is not possible to grip handles when opening or closing doors 14a and 15a, one of the following opening and closing mechanisms is installed on doors 14a and 15a to avoid impairing usability. That is, the first opening and closing mechanism is an electric opening and closing mechanism incorporating a power source such as a motor. When using this opening and closing mechanism, an opening and closing button is provided on the surface of the door, and the door opens and closes automatically when the user presses the button. The second opening and closing mechanism is a push-open opening and closing mechanism in which the door pops out a predetermined amount when the front of the closed door is pushed in. In this way, by providing one of the opening and closing mechanisms, the user can freely open and close doors 14a and 15a without having to provide handles on the side of the door. [Explanation of symbols]
[0042] 1 refrigerator 11 Refrigerator (first storage room) 11a Door 11b Handle 11c Rotation axis 12 Ice making room (second storage room) 12a Door 12b handle 13 Upper freezer compartment (second storage compartment) 13a Door 13b Handle 14 Lower freezer (third storage compartment) 14a Door 14b Handle 14c Resin parts 14d glass plate 14e steel plate 15 Vegetable compartment (third storage compartment) 15a Door 15b Handle 16 legs 16a Leg cover 2 recesses 3 Design surface 31 Top edge tab 32 Side claws
Claims
1. a first storage compartment opened and closed by a first rotary door; a second storage compartment opened and closed by a second drawer-type door; a third storage compartment opened and closed by a third drawer door; From top to bottom, The area of the front surface of the second door is smaller than the area of the front surface of the third door, a recessed portion that is a space recessed rearward across the left and right sides of the second door is provided at an upper portion of the second door, A storage container, wherein an internal volume of a container disposed in the second storage chamber is smaller than an internal volume of a container disposed in the third storage chamber, The first door has a handle on a lower surface thereof, a handle provided on the upper surface of the second door below the recess; The third door has no handle or a handle on the side, a dimension of a gap between a surface of the first door and a surface of the second door being larger than a dimension of a gap between a surface of the second door and a surface of the third door; A design surface is provided in the recess of the second door, The design surface is a different color and has a higher brightness than the first door, the second door, and the third door.
2. The refrigerator according to claim 1, The different colors are colors whose difference in lightness and chroma in Munsell values exceeds 3.
0.
3. a first storage compartment opened and closed by a first rotary door; a second storage compartment opened and closed by a second drawer-type door; a third storage compartment opened and closed by a third drawer door; a foot cover extending across the entire width dimension; From top to bottom, The area of the front surface of the second door is smaller than the area of the front surface of the third door, a recessed portion that is a space recessed rearward across the left and right sides of the second door is provided at an upper portion of the second door, A storage container, wherein an internal volume of a container disposed in the second storage chamber is smaller than an internal volume of a container disposed in the third storage chamber, The first door has a handle on a lower surface thereof, a handle provided on the upper surface of the second door below the recess; The third door has no handle or a handle on the side, a dimension of a gap between a surface of the first door and a surface of the second door being larger than a dimension of a gap between a surface of the second door and a surface of the third door; A design surface is provided in the recess of the second door, The design surface has a texture different from that of the first door, the second door, and the third door, and has a higher brightness; The refrigerator further comprises a leg cover below the third storage compartment, the leg cover extending across substantially the entire width of the refrigerator.
4. The refrigerator according to claim 3, In the refrigerator, when the door has a glass texture, the different texture is any one of wood, stone, metal, and resin textures.
5. The refrigerator according to any one of claims 1 to 4, A handle for the first door is provided above the design surface, The refrigerator has a handle for the second door provided below the design surface.
6. The refrigerator according to claim 1, The design surface has tabs on the upper and side edges of a plate-like member, and the tabs engage with the upper part of the second door, thereby attaching the design surface to the second door.
7. A first storage chamber that is opened and closed by a rotating first door; a second storage compartment opened and closed by a second drawer-type door; a third storage compartment opened and closed by a third drawer door; From top to bottom, The area of the front surface of the second door is smaller than the area of the front surface of the third door, A storage container, wherein an internal volume of a container disposed in the second storage chamber is smaller than an internal volume of a container disposed in the third storage chamber, The first door has a handle on a lower surface thereof, The second door has a handle on its top surface, The third door has no handle or a handle on the side, a dimension of a gap between a surface of the first door and a surface of the second door being larger than a dimension of a gap between a surface of the second door and a surface of the third door; A design surface is provided in the gap between the upper and lower surfaces of the first door and the second door, the design surface is a different color and has a higher brightness than the surfaces of the first door, the second door, and the third door, The design surface is a rectangular plate-like member having approximately the same height as the recessed portion at the top of the second door and approximately the same width as the second door.
8. A first storage chamber that is opened and closed by a rotating first door; a second storage compartment opened and closed by a second drawer-type door; a third storage compartment opened and closed by a third drawer door; From top to bottom, The area of the front surface of the second door is smaller than the area of the front surface of the third door, a recessed portion that is a space recessed rearward across the left and right sides of the second door is provided at an upper portion of the second door, A storage container, wherein an internal volume of a container disposed in the second storage chamber is smaller than an internal volume of a container disposed in the third storage chamber, The first door has a handle on a lower surface thereof, a handle on the upper surface of the second door below the recess; The third door has no handle or a handle on the side, a dimension of a gap between a surface of the first door and a surface of the second door being larger than a dimension of a gap between a surface of the second door and a surface of the third door; A design surface is provided in the recess of the second door, The design surface has an appearance different from that of the first door, the second door, and the third door, and is therefore more noticeable.
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