Refrigerator

Abstract

A refrigerator according to an aspect comprises: a cabinet forming a storage space; a door opening / closing the storage space; and a hinge mechanism connecting the door rotatably to the cabinet, wherein the door comprises: a main door which is rotatable with respect to the cabinet and opens / closes the storage space; and a sub-door which is rotatable with respect to the main door. The hinge mechanism comprises: a hinge body which is installed on the cabinet and is provided with a pin unit; a first pin slot which is provided in the main door and accommodates the pin unit, and a second pin slot which is provided in the sub-door and accommodates the pin unit, wherein the first pin slot and the second pin slot are arranged in the vertical direction, and during the opening of the main door, the positions of the first pin slot and the pin unit relative to each other are variable so that the rotating center of the main door is moved.

Description

refrigerator

[0001] This specification relates to a refrigerator.

[0002] In general, a refrigerator is a home appliance that allows food to be stored at a low temperature in an internal storage space that is shielded by a refrigerator door. It is configured to store stored food in an optimal condition by cooling the interior of the storage space using cold air generated through heat exchange with a refrigerant circulating in a refrigeration cycle.

[0003] The above refrigerator can be placed independently in a kitchen or living room, or stored inside a kitchen cabinet.

[0004] The above refrigerator may include a cabinet forming a storage space, and a door connected to the cabinet and having the storage space.

[0005] For example, if the above refrigerator is installed inside a cabinet, there is a risk that the door may hit the cabinet during the opening process, which may limit the opening angle of the door.

[0006] Recently, a hinge structure has been developed to prevent the door from interfering with surrounding structures such as furniture during the door opening process.

[0007] Prior literature related to this includes International Publication WO2019 / 007278A1.

[0008] However, the prior art only discloses the hinge structure of a single door, and does not disclose the hinge structure in a case where the door is composed of a first door and a second door rotatable with respect to the first door.

[0009] One embodiment provides a refrigerator in which the opening angles of the main door and the sub door are increased.

[0010] Optionally or additionally, one embodiment provides a refrigerator in which interference with surrounding structures is prevented during the opening process of the main door or the sub-door.

[0011] Alternatively or additionally, one embodiment provides a refrigerator in which the main door and the sub-door are rotatable by a single hinge mechanism.

[0012] A refrigerator according to one aspect may include a cabinet forming a storage space; a door for opening and closing the storage space; and a hinge mechanism for rotatably connecting the door to the cabinet.

[0013] The above door may include a main door that can rotate with respect to the cabinet and opens and closes the storage space, and a sub door that can rotate with respect to the main door.

[0014] The above hinge mechanism may include a hinge body installed in the cabinet and having a pin unit, a first pin slot provided in the main door and accommodating the pin unit, and a second pin slot provided in the sub door and accommodating the pin unit.

[0015] The first pin slot and the second pin slot can be aligned vertically.

[0016] During the opening process of the main door, the relative positions of the first pin slot and the pin unit can be changed, so that the center of rotation of the main door can move.

[0017] The rotation center of the above sub door may coincide with the rotation center of the above main door.

[0018] The pin unit can be accommodated in the second pin slot after penetrating the first pin slot.

[0019] The main door may include a first extension extending from the front of the main door toward the sub door. At least a portion of the first pin slot may be located in the first extension.

[0020] The sub-door may include a hinge mounting portion on which the first extension portion is positioned. At least a portion of the second pin slot may be positioned in the hinge mounting portion.

[0021] The sub-door may further include a second extension extending from the rear of the sub-door toward the main door. The main door may further include a receiving portion for receiving the second extension.

[0022] A portion of the first pin slot may be located in the first extension portion, and another portion may be exposed to the receiving portion.

[0023] A portion of the second pin slot may be located in the hinge mounting portion, and another portion may be located in the second extension portion.

[0024] The above pin unit can be accommodated in the first pin slot after penetrating the second pin slot.

[0025] The main door may include a first extension extending from the front of the main door toward the sub door. At least a portion of the first pin slot may be located in the first extension.

[0026] The sub-door may include a second extension portion extending from one side of the sub-door and positioned above the first extension portion. At least a portion of the second pin slot may be positioned in the second extension portion.

[0027] The main door may include a receptacle that is recessed from the front to the rear of the main door. A portion of the second extension may be positioned in the receptacle.

[0028] A portion of the first pin slot may be located in the first extension portion, and another portion may be located in the receiving portion.

[0029] A portion of the second pin slot may be located in the receiving portion.

[0030] In some sections of the entire opening section of the main door, the center of rotation of the main door may move away from the front of the cabinet, and in other sections, the center of rotation of the main door may move toward the cabinet.

[0031] In some sections of the entire opening section of the main door, the center of rotation of the main door may be located outside the sub-door and the main door.

[0032] When defining a virtual line extending in the front-back direction from the first side, which is the side adjacent to the hinge mechanism among both sides of the cabinet, the center of rotation may move away from the virtual line in some sections of the entire opening section of the main door, and may move toward the virtual line in other sections.

[0033] In some sections of the entire open section of the sub-door, the rotation center of the sub-door may be located inside the sub-door, and in other sections, the rotation center of the sub-door may be located outside the sub-door.

[0034] In some sections of the entire open section of the sub-door, the rotation center of the sub-door may be located inside the main door, and in other sections, the rotation center of the sub-door may be located outside the main door.

[0035] According to another aspect, a refrigerator may include a cabinet forming a storage space; a main door for opening and closing the storage space; a sub-door rotatable with respect to the main door; a main hinge mechanism for allowing the main door to rotate with respect to the cabinet; and a sub-hinge mechanism for allowing the sub-door to rotate with respect to the main door.

[0036] The above main hinge mechanism may include a hinge body installed in the cabinet, a first pin unit provided in one of the hinge body and the main door, and a first pin slot provided in the other of the hinge body and the main door, wherein the first pin unit is received.

[0037] The above sub-hinge mechanism may include a second pin unit provided in one of the main door and the sub-door, and a second pin slot provided in the other of the main door and the sub-door, wherein the second pin unit is received.

[0038] During the opening process of the main door, the relative positions of the first pin slot and the first pin unit can be changed, so that the center of rotation of the main door can move.

[0039] The above sub-door can rotate around the second pin unit.

[0040] At least a portion of the second pin slot may be positioned closer to the front of the sub-door than the first pin slot.

[0041] When the side adjacent to the sub hinge mechanism among the two sides of the sub door is referred to as the first side, at least a portion of the second pin slot may be positioned closer to the first side than the first pin slot.

[0042] The center of rotation of the main door may be positioned further from the front of the cabinet than the center of rotation of the sub door in at least a portion of the entire opening section of the main door.

[0043] In one embodiment, the main door or the sub door is opened as the rotation center of the main door and the sub door moves, so there is an advantage in that the opening angle of the main door and the sub door is increased.

[0044] In one embodiment, the rotation centers of the main door and the sub door can be moved away from one side of the furniture, so that the door can be prevented from interfering with the surrounding structure during the door opening process.

[0045] According to one embodiment, the main door and the sub-door can be opened while being guided in rotation by a single pin unit, so there is an advantage in that the main door and the sub-door can be rotated with a simple structure.

[0046] Figure 1 is a perspective view of a refrigerator according to the first embodiment.

[0047] Figure 2 is an exploded perspective view of the first door according to the first embodiment.

[0048] Figure 3 is an exploded perspective view of the first hinge mechanism according to the first embodiment.

[0049] Figure 4 is an exploded perspective view of a second hinge mechanism according to the first embodiment.

[0050] Figure 5 is a drawing showing the upper side of the main door according to the first embodiment.

[0051] Figure 6 is a drawing showing the upper side of a sub door according to the first embodiment.

[0052] Figure 7 is a cross-sectional view taken along line 7-7 of Figure 2.

[0053] Figure 8 is a cross-sectional view taken along line 8-8 of Figure 2.

[0054] Fig. 9 (A) is a drawing showing a state in which the main door is closed, and Fig. 9 (B) is a drawing showing a state in which the main door is opened by a first angle.

[0055] Figure 10 (A) is a drawing showing a state in which the main door is opened by a second angle greater than the first angle, and Figure 10 (B) is a drawing showing a state in which the main door is opened by a third angle greater than the second angle.

[0056] Figure 11 is a drawing showing the main door opened to its maximum opening angle.

[0057] Fig. 12 (A) is a drawing showing a state in which the sub-door is opened by a first angle, and Fig. 12 (B) is a drawing showing a state in which the sub-door is opened by a second angle greater than the first angle.

[0058] Figure 13 (A) is a drawing showing a state in which the sub-door is opened to a third angle greater than the second angle, and Figure 13 (B) is a drawing showing a state in which the sub-door is opened to the maximum opening angle.

[0059] Fig. 14 is a perspective view of a refrigerator equipped with a first hinge mechanism according to a second embodiment.

[0060] Figure 15 is a cross-sectional view taken along line 15-15 of Figure 14.

[0061] Fig. 16 is a perspective view of the first door according to the third embodiment.

[0062] Figure 17 is an exploded perspective view of the first door according to the third embodiment.

[0063] Fig. 18 is a cross-sectional view taken along line 18-18 of Fig. 16.

[0064] FIG. 19 is a drawing showing the relative positions of the first guide member and the second guide member according to the third embodiment.

[0065] Fig. 20 is a plan view showing a first door according to the fourth embodiment;

[0066] Fig. 21 is a drawing showing a state in which the main door according to the fourth embodiment is opened to the maximum opening angle.

[0067] FIG. 22 is a drawing showing a first hinge mechanism and a second hinge mechanism according to a fifth embodiment.

[0068] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. When designating components in each drawing, it should be noted that, where possible, identical components will be given the same reference numerals, even if they appear in different drawings. Furthermore, when describing embodiments of the present invention, detailed descriptions of related known structures or functions will be omitted if they are deemed to hinder understanding of the embodiments of the present invention.

[0069] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of embodiments of the present invention. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When it is described that a component is "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0070] In this specification, the front of the sub-door is a surface forming the front exterior of the first door, and the rear of the sub-door is a surface facing the main door.

[0071] The front of the main door forms the front exterior of the main door and is the surface facing the rear of the sub-door. The rear of the main door is the surface facing the cabinet or storage space.

[0072] The front of the main door is in the direction from the main door to the sub door, and the rear of the main door is in the direction toward the cabinet or storage space.

[0073] The forward / backward direction may refer to the arrangement direction of the cabinet and the first door.

[0074] FIG. 1 is a perspective view of a refrigerator according to a first embodiment, and FIG. 2 is an exploded perspective view of a first door according to the first embodiment.

[0075] Referring to FIGS. 1 and 2, the refrigerator (1) according to the present embodiment can be installed independently in a kitchen or installed in a form accommodated in a furniture cabinet or wall inside an indoor space (hereinafter collectively referred to as a “furniture cabinet”).

[0076] When the refrigerator (1) is installed in the cabinet, the refrigerator (1) may be installed alone or arranged left and right together with other refrigerators.

[0077] The above refrigerator (1) may include a cabinet (10) having a storage space. The above refrigerator (1) may further include a door (20) for opening and closing the storage space.

[0078] The above storage space is not limited, but may be divided into a first space (11) on the upper side and a second space (12) on the lower side. The door (20) may also include a first door (21) that opens and closes the first space (11) and a second door (22) that opens and closes the second space (12).

[0079] The first space may be a refrigerator, and the second space may be a freezer, or vice versa. Alternatively, the storage space may include a first space and a second space divided into left and right sides. Alternatively, the storage space may be a single space, with a single door opening and closing the storage space.

[0080] At least one of the first door (21) and the second door (22) may be a rotary door. Alternatively, a single door (20) may be a rotary door. Hereinafter, the rotary door (20), as an example, the first door (21), will be described.

[0081] Hereinafter, an example of opening and closing the first space (11) with multiple first doors (21) arranged left and right will be described.

[0082] At least one of the plurality of first doors (21) may include a main door (or inner door) (30) and a sub-door (or outer door) (40) rotatable with respect to the main door (30).

[0083] The main door (30) can open and close the first space (11). The main door (30) can include a first door frame (310) including an opening (312). Insulating material can be provided within the first door frame (310).

[0084] When the main door (30) is closed, the opening (312) may be connected to the first space (11). Alternatively, although not shown, a frame forming a door storage space may be coupled to the main door (30), and the opening (312) may be connected to the door storage space. The door storage space may be connected to the first space (11).

[0085] The sub-door (40) may form part or all of the front exterior of the first door (21). The sub-door (40) may open and close the opening (312). For example, the sub-door (40) may cover the opening (312). The left-right width of the sub-door (40) may be the same as or similar to the left-right width of the main door (30).

[0086] The above sub-door (40) may include a second door frame (410). Insulation may also be provided within the second door frame (410).

[0087] The second door frame (410) may be formed with a structure that restricts the transmission of light. Alternatively, the sub-door (40) may include the second door frame (410) having an opening and a panel assembly covering the opening. In this case, the panel assembly may include one or more panels that allow light transmission.

[0088] If the sub-door (40) includes a panel assembly that allows light to pass through, when the main door (30) and the sub-door (40) are closed and the lighting unit provided in the cabinet (10) or the main door (30) or the sub-door (40) is turned on, it is possible to check the items stored in the main door (30) or the items stored in the cabinet (10) through the panel assembly.

[0089] When the main door (30) rotates, the sub door (40) can rotate together with the main door (30).

[0090] Although not shown, the first door (21) may include a locking device for locking the main door (30) and the sub-door (40), and an operating unit operated by the user to unlock the locking device.

[0091] When the main door (30) and the sub door (40) are locked by the locking device, the main door (30) and the sub door (40) can be rotated together when the main door (30) or the sub door (40) is rotated.

[0092] When the main door (30) and the sub door (40) are unlocked by operating the above operation unit, the rotation of the sub door (40) becomes possible while the main door (30) is closed.

[0093] In this embodiment, the locking device and the operating unit can be implemented using known technology, so a detailed description thereof will be omitted.

[0094] The above first door (21) can be rotatably connected to the cabinet (10) by a first hinge mechanism (50) and a second hinge mechanism (60).

[0095] The first hinge mechanism (50) may be connected to the upper side of the first door (21). The second hinge mechanism (60) may be connected to the lower side of the first door (21). The first hinge mechanism (50) may be referred to as an upper hinge mechanism. The second hinge mechanism (60) may be referred to as a lower hinge mechanism.

[0096] In the present embodiment, the main door (30) can be rotated with respect to the cabinet (10) by the first and second hinge mechanisms (50, 60).

[0097] In addition, the sub-door (40) can also be rotated with respect to the main door (30) or cabinet (10) by the first and second hinge mechanisms (50, 60).

[0098] That is, the first and second hinge mechanisms (50, 60) can not only enable the main door (30) and the sub-door (40) to rotate together, but also enable the sub-door (40) to rotate independently.

[0099] FIG. 3 is an exploded perspective view of a first hinge mechanism according to the first embodiment, FIG. 4 is an exploded perspective view of a second hinge mechanism according to the first embodiment, FIG. 5 is a drawing showing the upper side of a main door according to the first embodiment, and FIG. 6 is a drawing showing the upper side of a sub door according to the first embodiment.

[0100] Referring to FIGS. 2 to 6, the first hinge mechanism (50) may include a first hinge body (510). The first hinge body (510) may be coupled to the upper surface or front surface of the cabinet (10). A portion of the first hinge body (510) may overlap the upper side of the first door (21) in the vertical direction.

[0101] A portion of the first hinge body (510) may overlap with the upper side of the main door (30) in a vertical direction. A portion of the first hinge body (510) may overlap with the upper side of the sub door (40) in a vertical direction.

[0102] The above first hinge mechanism (50) may further include a first pin unit (520).

[0103] The first pin unit (520) may be formed integrally with the first hinge body (510) or may be coupled to the first hinge body (510).

[0104] The first pin unit (520) may include a first pin (521) and a second pin (522). The first pin (521) and the second pin (522) may be spaced apart from the first hinge body (510).

[0105] The first pin (521) and the second pin (522) may, for example, extend from the first hinge body (510) toward the first door (21). The first pin (521) and the second pin (522) may extend downward from the first hinge body (510).

[0106] As another example, the first pin (521) and the second pin (522) may be connected by a connecting member. In this case, it may also be understood that the first pin unit (520) includes a single pin. The single pin may be formed in a non-circular shape, but may include a curve so as not to interfere with a wall forming a first slot (532) to be described later during the opening process of the first door (21). At least a portion of the curve may be identical to the curvature of the first slot (532).

[0107] The above first hinge mechanism (50) may further include a first guide member (530).

[0108] The first guide member (530) may include a first pin slot (532) in which the first pin unit (520) is received. For example, the first pin unit (520) may pass through the first pin slot (532).

[0109] The first guide member (530) may be coupled to the main door (30). Alternatively, the first guide member (530) may be omitted, and the first pin slot (532) may be formed in the main door (30). In this case, the first pin slot (532) may pass through the main door (30), and one wall of the main door (30) may form the first pin slot (532).

[0110] The above first hinge mechanism (50) may further include a second guide member (540).

[0111] The second guide member (540) may include a second pin slot (542) in which the first pin unit (520) is accommodated.

[0112] The second guide member (540) may be coupled to the sub-door (40). Alternatively, the second guide member (540) may be omitted, and the second pin slot (542) may be formed in the sub-door (40). In this case, the second pin slot (542) may be formed by recessing one surface of the sub-door (40), and one wall of the sub-door (40) may form the second pin slot (542).

[0113] In the present embodiment, the first pin unit (520) can pass through the main door (30) and be accommodated in the sub door (40).

[0114] The main door (30) may include a first extension portion (316) extending forward from the front surface (30a) of the main door (30). That is, the first extension portion (316) may extend from the front surface (30a) of the main door (30) toward the sub door (40).

[0115] The above first extension portion (316) may protrude from the upper and lower sides of the front surface (30a) of the main door (30), respectively. That is, a plurality of first extension portions (316) may be arranged spaced apart from each other vertically. Since the upper first extension portion (316) and the lower first extension portion are formed in a shape corresponding to each other, only the first extension portion (316) located on the upper side will be described below.

[0116] At least a portion of the first pin slot (532) may be located in the first extension (316).

[0117] The main door (30) may include a receiving portion (318) that is sunken from the front (30a) of the main door (30) toward the rear (30b). A portion of the sub door (40) may be received in the receiving portion (318).

[0118] At least a portion of the first pin slot (532) may be aligned with the receiving portion (318).

[0119] For example, a part of the first pin slot (532) may be positioned in the first extension (316), and another part of the first pin slot (532) may overlap the receiving portion (318) in a vertical direction.

[0120] A portion of the first pin slot (532) may penetrate the first extension portion (316) in a vertical direction. Another portion of the first pin slot (532) may extend downward from the upper surface (30c) of the main door (30) and communicate with the receiving portion (318).

[0121] Accordingly, a part of the first pin slot (532) may be positioned forward of the front surface (30a) of the main door (30), and another part may be positioned backward of the front surface (30a) of the main door (30).

[0122] The first pin slot (532) (or the first guide member (530)) may include a first end (532a) and a second end (532b) positioned opposite the first end (532a).

[0123] When the main door (30) is closed, the first pin (521) can contact or come into proximity with the first end (532a). When the main door (30) is opened to the maximum opening angle, the second pin (522) can contact or come into proximity with the second end (532b).

[0124] The first end (532a) and the second end (532b) may be positioned forward of the front surface (30a) of the main door (30). The first end (532a) and the second end (532b) may be positioned in the first extension (316).

[0125] The first pin slot (532) may extend from the first end (532a) in a direction approaching the receiving portion (318), extend into the interior of the receiving portion (318), and then be bent to extend in a direction away from the receiving portion (318).

[0126] The above sub-door (40) may further include a hinge mounting portion (412, 412a). The first extension portion (316) may be accommodated in the hinge mounting portion (412). In correspondence with the plurality of first extension portions (316), a hinge mounting portion (412, 412a) may be provided on the upper and lower sides of the sub-door (40), respectively. Since the upper hinge mounting portion (412) and the lower hinge mounting portion (412a) are formed in a shape corresponding to each other, the hinge mounting portion (412) provided on the upper side of the sub-door (40) will be described below.

[0127] The above hinge mounting portion (412) can be formed as the upper surface (40c) of the sub-door (40) is sunken downward.

[0128] The sub-door (40) may further include a second extension portion (414) extending rearward from the rear surface (40b) of the sub-door (40). That is, the extension portion (414) may extend from the rear surface (40b) of the sub-door (40) toward the main door (30).

[0129] The above second extension (414) can be accommodated in the accommodation portion (318).

[0130] At least a portion of the second pin slot (542) may be located in the hinge mounting portion (412). At least a portion of the second pin slot (542) may be located in the second extension portion (414).

[0131] When the second extension (414) is received in the receiving portion (318) and the first extension (316) is positioned in the hinge mounting portion (412), the first pin slot (532) and the second pin slot (542) can be aligned, for example, in the vertical direction.

[0132] The second pin slot (542) (or second guide member (540)) may include a first end (542a) and a second end (542b) positioned opposite the first end (542a).

[0133] When the main door (30) and sub-door (40) are closed, the first pin (521) can come into contact with or be in proximity to the first end (542a). When the main door (30) or sub-door (40) is opened to the maximum opening angle, the second pin (522) can come into contact with or be in proximity to the second end (542b).

[0134] The first end (542a) and the second end (542b) may be positioned forward of the rear surface (40b) of the sub-door (40). The first end (542a) and the second end (542b) may be positioned at the hinge mounting portion (412).

[0135] The first pin slot (542) may extend from the first end (542a) in a direction approaching the second extension (414) and then be bent to extend away from the second extension (414) (in a direction approaching the front surface (40a) of the sub door).

[0136] Meanwhile, the second hinge mechanism (60) may include a second hinge body (610). The second hinge body (610) may be coupled to the front or bottom of the cabinet (10). A portion of the second hinge body (610) may overlap the lower side of the first door (21) in the vertical direction. The second hinge body (610) may support the load of the first door (21).

[0137] The above second hinge mechanism (60) may further include a second pin unit (620).

[0138] The second pin unit (620) may be formed integrally with the second hinge body (610) or may be coupled to the second hinge body (610).

[0139] The second hinge body (610) may include, for example, a coupling portion (611) coupled to the cabinet (10) and an extension portion (612) extending from the coupling portion (611). The second pin unit (620) may be provided in the extension portion (612).

[0140] The second hinge mechanism (60) may further include a first guide member (630) and a second guide member (640).

[0141] The structure and operation of the second hinge mechanism (60) are the same as those of the first hinge mechanism (50), so a detailed description thereof will be omitted.

[0142] When a refrigerator (1) is installed in a cabinet or a kitchen, the opening angle of the first door (21) needs to be increased without interfering with the cabinet or surrounding structures during the opening process of the first door (21).

[0143] In this embodiment, the opening angle of the first door (21) can be increased without interfering with the furniture or surrounding structures by the first hinge mechanism (50) and the second hinge mechanism (60).

[0144] When the main door (30) and sub-door (40) are rotated together, the opening angle can be increased without interfering with the furniture or surrounding structures. Furthermore, when only the sub-door (40) is rotated, the opening angle can be increased without interfering with the furniture or surrounding structures.

[0145] For example, the first hinge mechanism (50) and the second hinge mechanism (60) may cause the center of rotation of the main door (30) to move in at least a portion of the entire opening section of the main door (30). At this time, the center of rotation may move in a direction away from one side of the furniture.

[0146] In the present embodiment, the rotation center of the main door (30) can be moved by the shape of the first pin slot (532) and the second pin slot (542).

[0147] The first pin slot (532) and the second pin slot (542) can be aligned in the vertical direction. The first pin slot (532) and the second pin slot (542) are formed in the same shape and can be formed in the same size or different sizes.

[0148] Depending on the shape of the pin slot (532, 542), the rotation center of the main door (30) can move continuously or stepwise.

[0149] Fig. 7 is a cross-sectional view taken along line 7-7 of Fig. 2, and Fig. 8 is a cross-sectional view taken along line 8-8 of Fig. 2.

[0150] Referring to FIGS. 2 to 8, the main door (30) may further include a hole (317) into which the first guide member (530) is inserted.

[0151] The first guide member (530) may include a body (531) in which the first pin slot (532) is formed, and a flange (533) extending from the body (532).

[0152] The flange (533) may extend horizontally from the top of the body (531). The main door (30) may further include a mounting groove (317a) in which the flange (533) is mounted. The mounting groove (317a) may be formed along the perimeter of the hole (317).

[0153] In a state where the above flange (533) is seated in the above seating groove (317a), the first guide member (530) may be restricted from moving downward.

[0154] In order for the first pin unit (520) to penetrate the first guide member (530), the first guide member (530) may include an upper opening (535) and a lower opening (536).

[0155] The above sub-door (40) may further include a receiving groove (413) in which the second guide member (540) is received.

[0156] The first pin unit (520) can pass through the first pin slot (532) and be accommodated in the second pin slot (542).

[0157] In a state where the first pin unit (520) is accommodated in the second pin slot (542), the first pin unit (520) can be spaced apart from the bottom of the second guide member (540).

[0158] The second extension (414) of the above sub-door (40) may include a plurality of intersecting surfaces.

[0159] The plurality of faces may include a first face (414a), a second face (414b) located on one side of the first face (414a), and a third face (414c) located on the other side of the first face (414a).

[0160] The second surface (414b) may be inclined with respect to the first surface (414a), and the third surface (414c) may be inclined with respect to the first surface (414a).

[0161] The second surface (414b) may extend from one end of the first surface (414a) in a direction approaching the front surface (40a) of the sub-door (40). The third surface (414c) may extend from the other end of the first surface (414a) in a direction approaching the front surface (40a) of the sub-door (40).

[0162] The width of the second extension (414) may increase as it gets closer to the front surface (40a) of the sub-door (40) on the first surface (414a).

[0163] As another example, the second extension (414) may include a single rounded surface. The surface may have a constant curvature. Alternatively, the surface may have a variable curvature.

[0164] The receiving portion (318) of the above main door (30) may be formed in a shape corresponding to or similar to the second extension portion (414).

[0165] When the second extension (414) is accommodated in the receiving portion (318), the second extension (414) can be spaced apart from the surface forming the receiving portion (318). That is, a gap can be formed between the second extension (414) and the surface forming the receiving portion (318). When the sub-door (40) is rotated with respect to the main door (30) by the gap, the second extension (414) can be prevented from interfering with the main door (30).

[0166] The surface forming the above-mentioned receiving portion (318) may include a plurality of intersecting parts.

[0167] The above plurality of parts may include a first part (318a), a second part (318b) positioned on one side of the first part (318a), and a third part (318c) positioned on the other side of the first surface (318a).

[0168] The second part (318b) may be inclined with respect to the first part (318a), and the third part (318c) may be inclined with respect to the first part (318a).

[0169] When the sub-door (40) is closed, the first side (414a) can face the first part (318a). The second side (414b) can face the second part (318b). The third side (414c) can face the third part (318c).

[0170] Below, the process of opening the main door (30) and sub door (40) together will be described.

[0171] Fig. 9 (A) is a drawing showing a state in which the main door is closed, and Fig. 9 (B) is a drawing showing a state in which the main door is opened by a first angle.

[0172] Figure 10 (A) is a drawing showing a state in which the main door is opened by a second angle greater than the first angle, and Figure 10 (B) is a drawing showing a state in which the main door is opened by a third angle greater than the second angle.

[0173] Figure 11 is a drawing showing the main door open to its maximum opening angle.

[0174] FIGS. 9 to 11 illustrate the arrangement of pin units and pin slots based on the cross-section illustrated in FIG. 8, as an example.

[0175] Referring to FIGS. 2 to 11, when the main door (30) and the sub-door (40) are locked, when the main door (30) or the sub-door (40) is rotated, the main door (30) and the sub-door (40) can be rotated together. Although not shown, a handle may be provided on the sub-door (40). At this time, the handle may or may not be provided on the main door (30).

[0176] During the rotation process of the main door (30), the first pin slot (532) and the second pin slot (542) move with respect to the first pin unit (520), so that the relative positions of the first pin unit (520) and each pin slot (532, 542) can be changed.

[0177] Referring to (A) of Fig. 9, when the main door (30) starts to open while the main door (30) is closed, the main door (30) can be rotated around the first rotation center (C1).

[0178] In this specification, the center of rotation of the main door (30) may be a virtual center of rotation of the main door (30).

[0179] The first rotation center (C1) may be located at the sub door (40). The first rotation center (C1) may be located at the first extension (316) of the main door (30).

[0180] Referring to (B) of FIG. 9, when the main door (30) is rotated by a first angle, the main door (30) can be rotated based on a second rotation center (C2). That is, the rotation center of the main door (30) can move in the process of opening the main door (30) by the first angle. The second rotation center (C2) can be located on the outside of the first door (21). That is, the second rotation center (C2) can be located on the outside of the main door (30) and the sub door (40).

[0181] The second rotation center (C2) may be positioned further from the front surface (10a) of the cabinet (10) than the first rotation center (C1).

[0182] Referring to (A) of FIG. 10, when the main door (30) is rotated by a second angle, the main door (30) can be rotated based on a third rotation center (C3). That is, the rotation center of the main door (30) can move in the process of opening the main door (30) by the second angle. The third rotation center (C3) can be located at the sub door (40). The third rotation center (C3) can be located at the first extension (316).

[0183] The third rotation center (C3) may be positioned closer to the front (10a) of the cabinet (10) than the second rotation center (C2).

[0184] A virtual line (A1) extending in the front-back direction can be defined from the first side adjacent to the first pin unit (520) among the two sides of the cabinet (10).

[0185] At this time, the distance between the virtual line (A1) and the third rotation center (C3) may be greater than the distance between the virtual line (A1) and the second rotation center (C2).

[0186] Referring to (B) of FIG. 10, when the main door (30) is rotated by a third angle, the main door (30) can be rotated based on a fourth rotation center (C4). That is, the rotation center of the main door (30) can move in the process of opening the main door (30) by the third angle. The fourth rotation center (C4) can be located at the sub door (40). The fourth rotation center (C4) can be located at the first extension (316).

[0187] The fourth rotation center (C4) may be positioned further away from the front surface (10a) of the cabinet (10) than the third rotation center (C3).

[0188] The distance between the virtual line (A1) and the fourth rotation center (C4) may be greater than the distance between the virtual line (A1) and the third rotation center (C3).

[0189] Referring to Fig. 11, immediately before the main door (30) is opened to the maximum opening angle, the main door (30) can be rotated about a fifth rotation center (C5). The fifth rotation center (C5) can be located at the sub door (40). The fifth rotation center (C5) can be located at the first extension (316).

[0190] The fifth rotation center (C5) may be positioned further from the front (10a) of the cabinet (10) than the fourth rotation center (C4).

[0191] The distance between the virtual line (A1) and the fifth rotation center (C5) may be smaller than the distance between the virtual line (A1) and the fourth rotation center (C4).

[0192] In this embodiment, the center of rotation of the main door (30) may move away from the front face (10a) of the cabinet (10) in some sections of the entire open section of the main door (30).

[0193] In some other sections of the entire open section of the main door (30), the center of rotation of the main door (30) can move in a direction closer to the front surface (10a) of the cabinet (10).

[0194] In some sections of the entire open section of the main door (30), the center of rotation of the main door (30) can move away from the virtual line (A1) (or one side of the furniture).

[0195] In some other sections of the entire open section of the main door (30), the center of rotation of the main door (30) can move in a direction closer to the virtual line (A1).

[0196] Next, the process of rotating the sub door (40) will be described.

[0197] Fig. 12(A) is a drawing showing a state in which the sub-door is opened to a first angle, and Fig. 12(B) is a drawing showing a state in which the sub-door is opened to a second angle greater than the first angle. Fig. 13(A) is a drawing showing a state in which the sub-door is opened to a third angle greater than the second angle, and Fig. 13(B) is a drawing showing a state in which the sub-door is opened to a maximum opening angle.

[0198] FIGS. 12 and 13 illustrate the arrangement of pin units and pin slots based on the cross-section illustrated in FIG. 8, as an example.

[0199] In this embodiment, the rotation center of the sub door (40) may coincide with the rotation center of the main door (30).

[0200] Referring to FIGS. 9 to 13, when the main door (30) and the sub door (40) are unlocked by the operating unit, the sub door (40) can be opened while the main door (30) is closed.

[0201] In the process of opening the above sub-door (40), the second pin slot (542) moves, so that the relative positions of the first pin unit (520) and the second pin slot (542) can be changed.

[0202] When the sub-door (40) starts to open while the sub-door (40) is closed, the sub-door (40) can be rotated around the first rotation center (C1).

[0203] Referring to (A) of FIG. 12, when the sub-door (40) is rotated by the first angle, the sub-door (40) can be rotated based on the second rotation center (C2). The second rotation center (C2) can be located on the outside of the sub-door (40). The second rotation center (C2) can be located on the outside or inside of the main door (30).

[0204] Referring to (B) of Fig. 12, when the sub-door (40) is rotated by the second angle, the sub-door (40) can be rotated based on the third rotation center (C3).

[0205] The third rotation center (C3) may be located at the sub door (40). The third rotation center (C3) may be located at the main door (30).

[0206] Referring to (A) of FIG. 13, when the sub-door (40) is rotated by the third angle, the sub-door (40) can be rotated based on the fourth rotation center (C4). The fourth rotation center (C3) can be located at the sub-door (40). The third rotation center (C3) can be located on the outside of the main door (30). However, depending on the curvature of the second pin slot (542), the third rotation center (C3) can also be located at the main door (30).

[0207] Referring to (B) of FIG. 13, immediately before the sub-door (40) is opened to the maximum opening angle, the sub-door (40) may be rotated about the fifth rotation center (C5). The fifth rotation center (C5) may be located at the sub-door (40). The fifth rotation center (C5) may be located on the outside of the main door (30).

[0208] In some sections of the entire open section of the sub-door (40), the center of rotation of the sub-door (40) may be located inside the main door (30).

[0209] In some other sections of the entire open section of the sub-door (40), the center of rotation of the sub-door (40) may be located outside the main door (30).

[0210] In some sections of the entire open section of the sub-door (40), the center of rotation of the sub-door (40) may be located inside the sub-door (40).

[0211] In some other sections of the entire open section of the sub-door (40), the center of rotation of the sub-door (40) may be located outside the sub-door (40).

[0212] According to this embodiment, since the main door or the sub door is opened while the rotation center of the main door and the sub door moves, there is an advantage in that the opening angle of the main door and the sub door increases.

[0213] According to this embodiment, since the rotation centers of the main door and the sub door can be moved away from one side of the furniture, the door can be prevented from interfering with the surrounding structure during the door opening process.

[0214] According to this embodiment, since the main door and the sub-door can be opened while being guided in rotation by a single pin unit, there is an advantage in that the main door and the sub-door can be rotated with a simple structure.

[0215] FIG. 14 is a perspective view of a refrigerator equipped with a first hinge mechanism according to a second embodiment, and FIG. 15 is a cross-sectional view taken along line 15-15 of FIG. 14.

[0216] This embodiment is identical to the first embodiment in other respects, except that there are differences in the shape of the first door and some structures of the first hinge mechanism. Therefore, only the characteristic parts of this embodiment will be described below.

[0217] Referring to FIGS. 14 and 15, the first door (21A) of the present embodiment may include a main door (70) and a sub-door (72). The main door (70) and the sub-door (72) may be rotated by a first hinge mechanism (50A).

[0218] The above first hinge mechanism (50A) may include a first hinge body (510) and a first pin unit (520). Since the first hinge body (510) and the first pin unit (520) are the same as those in the first embodiment, a detailed description thereof will be omitted.

[0219] The first hinge mechanism (50A) may further include a first guide member (530A). The first guide member (530A) may have a first pin slot (532) through which the first pin unit (520) passes.

[0220] The first hinge mechanism (50A) may further include a second guide member (540A). The second guide member (540A) may have a second pin slot (534).

[0221] Unlike the first embodiment, the first guide member (530A) may be provided in the sub-door (72), and the second guide member (540A) may be provided in the main door (70). Alternatively, the first pin slot (532) may be provided in the sub-door (72), and the second pin slot (534) may be provided in the main door (70).

[0222] The main door (70) may include a first extension portion (702) extending forward from the front of the main door (70). An upper surface (704) of the first extension portion (702) may be positioned lower than an upper surface of the main door (70).

[0223] The above main door (70) may further include a receiving portion (705) formed by having an upper surface sunken downward. The bottom of the receiving portion (705) may be formed at the same height as the upper surface (704) of the first extension portion (702) or may form a continuous surface.

[0224] The left-right width of the above sub-door (72) may be smaller than the left-right width of the above main door (70).

[0225] When the sub-door (72) is closed, the first extension (702) can be positioned on one side of the sub-door (72). At this time, the side surface (721) of the sub-door (72) can be spaced apart from the first extension (702). Therefore, interference between the sub-door (72) and the first extension (702) can be prevented during the process of opening the sub-door (72).

[0226] The sub-door (72) may further include a second extension portion (722). The second extension portion (722) may, for example, extend horizontally from the upper portion of the side surface (721) of the sub-door (72). At least a portion of the second extension portion (722) may overlap the first extension portion (702) in the vertical direction. The second extension portion (722) may be positioned above the first extension portion (702).

[0227] For example, a part of the second extension (722) may overlap the first extension (702) in the vertical direction, and another part may be accommodated in the accommodation (705).

[0228] Another part of the second extension (722) may protrude rearward from the rear of the sub-door (72). That is, the second extension (722) may include a protrusion (724) accommodated in the receiving portion (705). The protrusion (724) may be formed in a shape corresponding to the second extension (414) described in the first embodiment. The receiving portion (705) may be formed in a shape corresponding to the receiving portion (318) described in the first embodiment.

[0229] The above first guide member (530A) can be provided in the second extension portion (722). Accordingly, the first pin unit (520) can penetrate the second extension portion (722).

[0230] A part of the second guide member (540A) may be positioned in the first extension (702) and another part may be positioned in the receiving portion (705).

[0231] Even in the present embodiment, when the main door and the sub door rotate together, the opening angle of the main door can be increased.

[0232] In addition, since the main door and sub-door can be opened while being guided by rotation by a single pin unit, there is an advantage in that the main door and sub-door can be rotated by a simple structure.

[0233] Fig. 16 is a perspective view of a first door according to a third embodiment, and Fig. 17 is an exploded perspective view of a first door according to a third embodiment.

[0234] FIG. 18 is a cross-sectional view taken along line 18-18 of FIG. 16, and FIG. 19 is a drawing showing the relative positions of the first guide member and the second guide member according to the third embodiment.

[0235] This embodiment is otherwise identical to the first embodiment, except that it is characterized by a separate hinge mechanism for rotating the sub-door. Therefore, only the characteristic parts of this embodiment will be described below, and the same drawing reference numerals will be used for the same components as the first embodiment.

[0236] Referring to FIGS. 16 to 19, the first door (21) of the present embodiment may include a main door (30) and a sub door (40).

[0237] The first hinge mechanism (50B) of the present embodiment may include a main hinge mechanism (560) and a sub-hinge mechanism (570). The main hinge mechanism (560) allows the main door (30) to rotate relative to the cabinet (10). The sub-hinge mechanism (570) allows the sub-door (40) to rotate relative to the main door (30).

[0238] The above main hinge mechanism (560) may include a first hinge body (510) and a first pin unit (520). Since the structures of the first hinge body (510) and the first pin unit (520) are the same as those of the first embodiment, a detailed description thereof will be omitted.

[0239] The main hinge mechanism (560) may further include a first guide member (550). The first guide member (550) may include a first pin slot (552) that accommodates the first pin unit (520).

[0240] The first pin slot (552) may be located in the first extension (316) of the main door (30). Similar to the first embodiment, the main door (30) may include a receiving portion (318), or, unlike the first embodiment, the receiving portion (318) may not be formed in the main door (30).

[0241] The first guide member (550) may be coupled to the extension portion (316). Alternatively, the first guide member (550) may be omitted, and the first pin slot (552) may be formed in the extension portion (316). Unlike the first embodiment, the first pin unit (520) may not penetrate the extension portion (316). Alternatively, even if the first pin unit (520) penetrates the extension portion (316), it may not be accommodated in the sub-door (40). That is, the lower end of the first pin unit (520) may be positioned higher than the bottom of the hinge mounting portion (412) of the sub-door (40).

[0242] The above sub-hinge mechanism (570) may include a second pin unit (572) and a second guide member (574) in which the second pin unit (572) is received.

[0243] The second pin unit (572) may be formed integrally with the first extension portion (316) or may be coupled to the first extension portion (316). The second pin unit (572) may extend downward from the first extension portion (316).

[0244] The above sub-door (40) can be rotated about the second pin unit (572) as a rotational center. That is, the rotational center of the main door (30) can move during the opening process of the main door (30). On the other hand, during the rotation process of the sub-door (40), the rotational center (SC1) of the sub-door (40) can be fixed.

[0245] The second guide member (574) may be provided on the bottom of the hinge mounting portion (412) of the sub-door (40). The second guide member (574) may form a second pin slot (575).

[0246] A groove (420) into which the second guide member (574) is inserted may be formed at the bottom of the hinge mounting portion (412). Alternatively, the second guide member (574) may be omitted, and the second pin slot (575) may be formed by being recessed downward at the bottom of the hinge mounting portion (412).

[0247] At least a portion of the second pin slot (575) may be positioned closer to the front surface (40a) of the sub-door (40) than the first pin slot (552).

[0248] Among the two sides of the sub-door (40), the side positioned adjacent to the second pin slot (575) may be referred to as the first side (40d). At least a portion of the second pin slot (575) may be positioned closer to the first side (40d) than the first pin slot (552).

[0249] The rotation center (SC1) of the sub-door (40) may be positioned closer to the front surface (40a) of the sub-door (40) than the first pin slot (552).

[0250] Referring to FIGS. 9 to 11 and 18 together, the first to fifth rotation centers (C1 to C5) of the main door (30) may be positioned further from the front surface (10a) of the cabinet (10) than the rotation center (SC1) of the sub door (40).

[0251] In some sections of the entire open section of the main door (30), the rotation center of the main door (30) may be positioned closer to the virtual line (A1) than the rotation center (SC1) of the sub door (40).

[0252] In some other sections of the entire open section of the main door (30), the rotation center (SC1) of the sub door (40) may be positioned closer to the virtual line (A1) than the rotation center of the main door (30).

[0253] Additionally, it is also possible for the second pin unit to be formed in the sub door and the second pin slot to be formed in the main door.

[0254] Meanwhile, the second hinge mechanism located on the lower side of the first door (21) is symmetrical with the first hinge mechanism, so a detailed description thereof will be omitted.

[0255] Fig. 20 is a plan view showing a first door according to the fourth embodiment, and Fig. 21 is a drawing showing a state in which the main door according to the fourth embodiment is opened to the maximum opening angle.

[0256] This embodiment is identical to the third embodiment in other respects, except that there is a difference in the positions of the first pin unit and the first pin slot. Therefore, only the characteristic parts of this embodiment will be described below. The same drawing reference numerals will be used for the same components as the third embodiment.

[0257] Referring to FIGS. 20 and 21, the first door (21) of the present embodiment may include a main door (30) and a sub door (40).

[0258] The first hinge mechanism (50C) of the present embodiment may include a main hinge mechanism (560A) and a sub hinge mechanism (570).

[0259] The above main hinge mechanism (560A) allows the main door (30) to rotate relative to the cabinet (10). The above sub-hinge mechanism (570) allows the sub-door (40) to rotate relative to the main door (30).

[0260] The above main hinge mechanism (560A) may include a first hinge body (710) having a first pin slot (712) and a first pin unit (720).

[0261] The above sub-hinge mechanism (570) may include a second pin unit (572) and a second pin slot (575). The structure of the above sub-hinge mechanism (570) may be the same as the structure of the sub-hinge mechanism described in the third embodiment.

[0262] The above first pin unit (720) may be, for example, coupled to the upper side of the main door (30) or formed integrally with the main door (30).

[0263] The first pin unit (720) may include a first pin (722) and a second pin (724) that are spaced apart from each other.

[0264] The first pin (722) and the second pin (724) may be formed integrally with the main door (30). Alternatively, the first pin unit (720) may include a plate supporting the first pin (722) and the second pin (724), and the plate may be coupled to the main door (30).

[0265] The first fin (722) and the second fin (724) may be spaced apart in the front-back direction (or Y-axis direction) of the refrigerator or in the arrangement direction of the cabinet (10) and the first door (21). In addition, the first fin (722) and the second fin (724) may also be spaced apart in the X-axis direction intersecting the Y-axis direction.

[0266] The first pin slot (712) may be a hole through which the first pin (722) and the second pin (724) pass, or a groove into which the first pin (722) and the second pin (724) are inserted.

[0267] The first pin slot (712) may include a first slot portion (713). The first slot portion (713) may extend in a direction intersecting the X-axis and the Y-axis. The first slot portion (713) may guide the first pin (722) during the opening and closing process of the main door (30). The first slot portion (713) may extend in a curved shape.

[0268] The first pin slot (712) may further include a second slot portion (714) extending from the first slot portion (713). The second slot portion (714) may extend from a position spaced apart from both ends (713a, 713b) of the first slot portion (713). The second slot portion (714) may guide the second pin (724) during the opening and closing process of the main door (30). The second slot portion (514) may extend in a curved shape.

[0269] The first slot (712) may further include a third slot portion (715) extending from the first slot portion (713). The third slot portion (715) may be located on the opposite side of the second slot portion (714) from the first slot portion (713).

[0270] In the process of closing the main door (30), the first pin (722) may contact or come into contact with the first end (513a), and the second pin (724) may contact or come into contact with the end of the third slot portion (715).

[0271] In the process of opening the main door (30) to the maximum opening angle, the first pin (722) may contact or come into proximity with the end (714a) of the second slot portion (714), and the second pin (724) may contact or come into proximity with the second end (713b) of the first slot portion (713).

[0272] In this embodiment, the second hinge mechanism connected to the lower side of the first door (21) can be formed to be symmetrical in the vertical direction with the first hinge mechanism, so a detailed description thereof will be omitted.

[0273] FIG. 22 is a drawing showing a first hinge mechanism and a second hinge mechanism according to a fifth embodiment.

[0274] Referring to Fig. 22, this embodiment is identical to some embodiments, including the first embodiment, in other respects, except for a difference in the shape of the guide member. Therefore, only the characteristic parts of this embodiment will be described below.

[0275] Referring to FIG. 22, the hinge mechanism of the present embodiment may include a first hinge mechanism (90) (or upper hinge mechanism) and a second hinge mechanism (950) (or lower hinge mechanism).

[0276] The above first hinge mechanism (90) may include a first hinge body (910) and a first pin unit (920).

[0277] The first pin unit (920) may, for example, extend from the first hinge body (910) toward the first door (21). The first pin unit (920) may extend downward from the first hinge body (910).

[0278] The first pin unit (920) may include a first pin (921) and a second pin (922). The first pin (921) and the second pin (922) may be spaced apart from the first hinge body (910).

[0279] The basic form and function of the first pin (921) and the second pin (922) are the same as the first pin and the second pin of the first embodiment, so a detailed description thereof will be omitted.

[0280] The above first hinge mechanism (90) may include a first guide member (930).

[0281] The first guide member (930) may be divided into two members. For example, the first guide member (930) may include a first member (930a) and a second member (930b).

[0282] The first pin unit (920) may be accommodated in the second member (930b) after penetrating the first member (930a). For example, one of the first member (930a) and the second member (930b) may be provided in the main door (30), and the other may be provided in the sub door (40).

[0283] The above first guide member (930) can form a first pin slot.

[0284] For example, each of the first member (930a) and the second member (930b) can form a first pin slot.

[0285] The first pin slot may include a first slot (942, 942a) in which the first pin (921) is received, and a second slot (944, 944a) in which the second pin (922) is received. The first slot (942, 942a) and the second slot (944a) may be spaced apart from each other and disposed.

[0286] The first member (930a) may include an extension portion (931) that is fastened to the first door (21). A fastening hole (932) through which a fastening member passes may be formed in the extension portion (931). The fastening member may be fastened to the first door (21) by passing through the fastening hole (932).

[0287] Each of the first member (930a) and the second member (930b) may include a first body part (933) forming the first slot (942, 942a) and a second body part (934) forming the second slot (944, 944a).

[0288] The second hinge mechanism (950) of the present embodiment may include a second hinge body and a second pin unit (960).

[0289] The second hinge body may include, for example, a coupling portion (951) coupled to the cabinet (10) and an extension portion (952) extending from the coupling portion (951). The second pin unit (960) may be provided in the extension portion (952).

[0290] The above second pin unit (960) may, for example, extend upward from the extension portion (952).

[0291] The second pin unit (960) may include a first pin (961) and a second pin (962). The first pin (961) and the second pin (962) may be spaced apart from each other in the extension portion (952).

[0292] The second hinge mechanism (950) may further include a second guide member (970). The second guide member (970) may be provided on the first door (21).

[0293] The second guide member (970) may be divided into two members. For example, the second guide member (970) may include a first member (970a) and a second member (970b).

[0294] The second pin unit (960) can be accommodated in the second member (970b) after penetrating the first member (970a).

[0295] For example, one of the first member (970a) and the second member (970b) may be provided in the main door (30), and the other may be provided in the sub door (40).

[0296] The above second guide member (970) can form a second pin slot.

[0297] The second pin slot may include a first slot (982, 982a) in which the first pin (961) is received, and a second slot (984, 984a) in which the second pin (962) is received. The first slot (982, 982a) and the second slot (984, 984a) may be spaced apart from each other and disposed.

[0298] The first member (970a) may include an extension portion (971) that is fastened to the first door (21). A fastening hole (972) through which a fastening member passes may be formed in the extension portion (971). The fastening member may be fastened to the first door (21) by passing through the fastening hole (942).

[0299] Each of the first member (970a) and the second member (970b) may include a first body part (973) forming the first slot (982, 982a) and a second body part (974) forming the second slot (984, 984a).

[0300] Even in the present embodiment, the rotation center of the first door (21) can be moved by the first hinge mechanism (90) and the second hinge mechanism (950).

Claims

1. Cabinet forming storage space; A door for opening and closing the above storage space; and including a hinge mechanism that rotatably connects the door to the cabinet; The above door is rotatable with respect to the cabinet and is a main door that opens and closes the storage space, Includes a rotatable sub-door for the above main door, The above hinge mechanism is installed in the cabinet and includes a hinge body having a pin unit, A first pin slot provided in the main door and accommodating the pin unit; Equipped in the above sub door, and including a second pin slot in which the pin unit is accommodated, The first pin slot and the second pin slot are aligned in the vertical direction, A refrigerator in which, during the opening process of the main door, the relative positions of the first pin slot and the pin unit are changed, so that the center of rotation of the main door moves.

2. In paragraph 1, A refrigerator in which the center of rotation of the above sub-door is identical to the center of rotation of the above main door.

3. In paragraph 1, A refrigerator wherein the pin unit is received in the second pin slot after penetrating the first pin slot.

4. In paragraph 3, The main door includes a first extension extending from the front of the main door toward the sub door, A refrigerator wherein at least a portion of the first pin slot is located in the first extension.

5. In paragraph 4, The sub-door includes a hinge mounting portion in which the first extension portion is positioned, A refrigerator wherein at least a portion of the second pin slot is located in the hinge mounting portion.

6. In paragraph 5, The sub-door further includes a second extension extending from the rear of the sub-door toward the main door, The above main door further includes a receiving portion in which the second extension portion is received, A part of the first pin slot is located in the first extension, and another part is exposed to the receiving portion, A refrigerator wherein a part of the second pin slot is located in the hinge mounting portion and another part is located in the second extension portion.

7. In paragraph 1, A refrigerator wherein the pin unit is received in the first pin slot after penetrating the second pin slot.

8. In paragraph 7, The main door includes a first extension extending from the front of the main door toward the sub door, A refrigerator wherein at least a portion of the first pin slot is located in the first extension.

9. In paragraph 8, The sub-door includes a second extension portion extending from one side of the sub-door and positioned above the first extension portion, A refrigerator wherein at least a portion of the second pin slot is located in the second extension.

10. In paragraph 9, The above main door includes a receptacle that is sunken from the front to the rear of the main door, A portion of the second extension is located in the receiving portion, A part of the first pin slot is located in the first extension, and another part is located in the receiving portion, A refrigerator wherein a portion of the second pin slot is located in the receiving portion.

11. In paragraph 1, In some sections of the entire opening section of the main door, the center of rotation of the main door moves away from the front of the cabinet, In some other sections, the center of rotation of the main door moves in a direction closer to the cabinet.

12. In paragraph 1, A refrigerator wherein the center of rotation of the main door is located outside the sub-door and the main door in some section of the entire open section of the main door.

13. In paragraph 1, When defining an imaginary line extending in the front-back direction from the first side, which is the side adjacent to the hinge mechanism among the two sides of the above cabinet, In some sections of the entire opening section of the main door, the center of rotation of the main door moves away from the virtual line, A refrigerator in which the center of rotation of the main door in some other sections moves in a direction closer to the virtual line.

14. In paragraph 1, In some sections of the entire open section of the sub-door, the center of rotation of the sub-door is located inside the sub-door, A refrigerator in which the center of rotation of the sub-door in some other sections is located outside the sub-door.

15. In paragraph 1, In some sections of the entire open section of the above sub-door, the rotation center of the above sub-door is located inside the above main door, A refrigerator in which the center of rotation of the sub-door in some other sections is located outside the main door.

16. Cabinet forming storage space; A main door for opening and closing the above storage space; A rotatable sub-door for the above main door; A main hinge mechanism that allows the main door to rotate relative to the cabinet; and The sub-door comprises a sub-hinge mechanism that allows the sub-door to rotate relative to the main door, The above main hinge mechanism comprises a hinge body installed in the cabinet, A first pin unit provided on either the hinge body or the main door, A first pin slot is provided on the other of the hinge body and the main door, and the first pin unit is received therein. The above sub-hinge mechanism, A second pin unit provided in one of the main door and the sub door, A second pin slot is provided in the other of the main door and the sub door, and the second pin unit is accommodated therein. A refrigerator in which, during the opening process of the main door, the relative positions of the first pin slot and the first pin unit are changed, so that the center of rotation of the main door moves.

17. In paragraph 16, The above sub-door is a refrigerator that rotates around the second pin unit.

18. In paragraph 16, A refrigerator wherein at least a portion of the second pin slot is positioned closer to the front of the sub-door than the first pin slot.

19. In paragraph 16, When the side of the above sub-door adjacent to the above sub-hinge mechanism is called the first side, A refrigerator wherein at least a portion of the second pin slot is positioned closer to the first side than the first pin slot.

20. In paragraph 16, A refrigerator wherein the center of rotation of the main door is located further from the front of the cabinet than the center of rotation of the sub door during at least a portion of the entire opening section of the main door.

Images