Refrigerator

Abstract

A refrigerator includes a cabinet forming a storage space, a door opening and closing the storage space, and a hinge mechanism rotatably connecting the door to the cabinet. The door includes a main door rotatable with respect to the cabinet to open and close the storage space, and a sub-door rotatable with respect to the main door. The hinge mechanism includes a hinge body provided to the cabinet and having a pin unit, a first pin groove provided to the main door and accommodating the pin unit, and a second pin groove provided to the sub-door and accommodating the pin unit. The first pin groove and the second pin groove are aligned in a vertical direction, and a relative position of the first pin groove and the pin unit changes during opening of the main door, thereby moving a center of rotation of the main door. According to the present application, an opening angle of the main door and the sub-door can be increased.

Description

Technical Field

[0001] This utility model relates to a refrigerator. Background Technology

[0002] Typically, a refrigerator, as a household appliance that can store food at low temperatures in the storage space inside the refrigerator door, is configured to use cold air generated by heat exchange with the refrigerant circulating in the refrigeration cycle to cool the interior of the storage space, thereby preserving the stored food in optimal condition.

[0003] The refrigerator can be placed separately in the kitchen or living room, or stored in a kitchen cabinet.

[0004] The refrigerator may include: a cabinet forming a storage space; and a door connected to the cabinet to set up the storage space.

[0005] As an example, when the refrigerator is installed inside a furniture cabinet, there is a risk that the door may collide with the furniture cabinet during the opening process, thus limiting the opening angle of the door.

[0006] Recently, hinge structures have been developed to prevent doors from interfering with surrounding structures such as furniture cabinets during the opening process.

[0007] The relevant existing literature is the international publication WO2019 / 007278A1.

[0008] However, existing literature only discloses the hinge structure of a single door, and does not disclose the hinge structure of a door consisting of a first door and a second door that can rotate relative to the first door. Utility Model Content

[0009] Problems to be solved by utility models

[0010] One embodiment provides a refrigerator with increased opening angles for the main door and the secondary door.

[0011] Alternatively or additionally, one embodiment provides a refrigerator that prevents the main door or secondary door from interfering with surrounding structures during opening.

[0012] Alternatively or additionally, one embodiment provides a refrigerator that allows the main door and the secondary door to rotate using a hinge mechanism.

[0013] means for solving problems

[0014] One aspect of the refrigerator 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.

[0015] The door may include: a main door, which is rotatable relative to the housing to open and close the storage space; and a secondary door, which is rotatable relative to the main door.

[0016] The hinge mechanism may include: a hinge body disposed in the housing and having a pin unit; a first pin groove disposed in the main door, wherein the pin unit is accommodated in the first pin groove; and a second pin groove disposed in the secondary door, wherein the pin unit is accommodated in the second pin groove.

[0017] The first pin groove and the second pin groove can be aligned vertically.

[0018] During the opening of the main door, the relative position of the first pin groove and the pin unit can change, causing the rotation center of the main door to move.

[0019] The rotation center of the secondary door can be the same as the rotation center of the main door.

[0020] The pin unit can be accommodated in the second pin groove after passing through the first pin groove.

[0021] The main door may include a first extension extending from the front of the main door toward the secondary door. At least a portion of the first pin groove may be located in the first extension.

[0022] The secondary door may include a hinge mounting portion, with the first extension located within the hinge mounting portion. At least a portion of the second pin groove may be located within the hinge mounting portion.

[0023] The secondary door may further include a second extension extending from the back of the secondary door toward the main door. The main door may further include a receiving portion, in which the second extension is received.

[0024] A portion of the first pin groove may be located in the first extension, and another portion may be exposed to the receiving portion.

[0025] A portion of the second pin groove may be located in the hinge mounting portion, and another portion may be located in the second extension portion.

[0026] The pin unit can be accommodated in the first pin groove after passing through the second pin groove.

[0027] The main door may include a first extension extending from the front of the main door toward the secondary door. At least a portion of the first pin groove may be located in the first extension.

[0028] The secondary door may include a second extension extending from one side of the secondary door and located above the first extension. At least a portion of the second pin groove may be located in the second extension.

[0029] The main door may include a recessed receiving portion extending from the front to the back of the main door. A portion of the second extension may be located within the receiving portion.

[0030] A portion of the first pin groove may be located in the first extension, and another portion may be located in the receiving portion.

[0031] A portion of the second pin groove may be located in the receiving portion.

[0032] In a portion of the overall open area of ​​the main door, the rotation center of the main door can move away from the front of the enclosure; in another portion, the rotation center of the main door can move closer to the enclosure.

[0033] Within a portion of the overall open area of ​​the main door, the rotation center of the main door may be located outside the secondary door and the main door.

[0034] When a virtual line is defined extending in the front-back direction on the first side of the two sides of the housing, that is, the surface adjacent to the hinge mechanism, the rotation center of the main door can move away from the virtual line in a certain section of the overall open area of ​​the main door, and in another section, the rotation center of the main door can move closer to the virtual line.

[0035] In a portion of the overall open area of ​​the secondary door, the rotation center of the secondary door may be located inside the secondary door; in another portion, the rotation center of the secondary door may be located outside the secondary door.

[0036] In a portion of the overall open area of ​​the secondary door, the rotation center of the secondary door may be located inside the main door; in another portion, the rotation center of the secondary door may be located outside the main door.

[0037] Another refrigerator may include: a cabinet forming a storage space; a main door for opening and closing the storage space; a secondary door rotatable relative to the main door; a main hinge mechanism for enabling the main door to rotate relative to the cabinet; and a secondary hinge mechanism for enabling the secondary door to rotate relative to the main door.

[0038] The main hinge mechanism may include: a hinge body disposed in the housing; a first pin unit disposed in either the hinge body or the main door; and a first pin groove disposed in the other of the hinge body and the main door, wherein the first pin unit is accommodated in the first pin groove.

[0039] The secondary hinge mechanism may include: a second pin unit disposed on either the main door or the secondary door; and a second pin groove disposed on the other of the main door and the secondary door, wherein the second pin unit is accommodated in the second pin groove.

[0040] During the opening of the main door, the relative position of the first pin groove and the first pin unit can change, allowing the rotation center of the main door to move.

[0041] The secondary door can rotate around the second pin unit as the rotation center.

[0042] At least a portion of the second pin groove may be located closer to the front of the secondary door than the first pin groove.

[0043] When the side of the secondary door adjacent to the secondary hinge mechanism is referred to as the first side, at least a portion of the second pin groove can be located closer to the first side than the first pin groove.

[0044] In at least a portion of the overall open area of ​​the main door, the rotation center of the main door may be located further away from the front of the enclosure than the rotation center of the secondary door.

[0045] The effect of the utility model.

[0046] According to one embodiment, since the main door or the secondary door opens while the rotation center of the main door and the secondary door moves, it has the advantage of increasing the opening angle of the main door and the secondary door.

[0047] According to one embodiment, since the rotation centers of the main door and the secondary door can move in a direction away from the furniture cabinet, interference between the door and surrounding structures can be prevented during the opening of the door.

[0048] According to one embodiment, since the main door and the secondary door can be opened while being guided to rotate by a single pin unit, it has the advantage of being able to rotate the main door and the secondary door using a simple structure. Attached Figure Description

[0049] Figure 1 This is a perspective view of the refrigerator according to the first embodiment.

[0050] Figure 2 This is an exploded perspective view of the first gate in the first embodiment.

[0051] Figure 3 This is an exploded perspective view of the first hinge mechanism of the first embodiment.

[0052] Figure 4 This is an exploded perspective view of the second hinge mechanism in the first embodiment.

[0053] Figure 5 This is a diagram showing the upper side of the main door in the first embodiment.

[0054] Figure 6 This is a diagram showing the upper side of the secondary door in the first embodiment.

[0055] Figure 7 It is along Figure 1 7-7 is a cut section view.

[0056] Figure 8 It is along Figure 1 8-8 is a sectional view cut open.

[0057] Figure 9 (a) is a diagram showing the main door in the closed state. Figure 9 (b) is a diagram showing the main door at its first open angle.

[0058] Figure 10 (a) is a diagram showing the state where the main gate is open to a second angle greater than the first angle. Figure 10 (b) is a diagram showing the state where the main gate is open to a third angle greater than the second angle.

[0059] Figure 11 This is a diagram showing the main door open to its maximum opening angle.

[0060] Figure 12 (a) is a diagram showing the secondary door at its first open angle. Figure 12 (b) is a diagram showing the state where the secondary gate is open to a second angle greater than the first angle.

[0061] Figure 13 (a) is a diagram showing the state where the secondary gate is open to a third angle greater than the second angle. Figure 13 (b) is a diagram showing the secondary door open to its maximum opening angle.

[0062] Figure 14 This is a perspective view of a refrigerator with a first hinge mechanism according to the second embodiment.

[0063] Figure 15 It is along Figure 14 A sectional view cut 15-15.

[0064] Figure 16 This is a perspective view of the first door in the third embodiment.

[0065] Figure 17 This is an exploded perspective view of the first gate in the third embodiment.

[0066] Figure 18 It is along Figure 16 A sectional view cut 18-18.

[0067] Figure 19 This is a diagram showing the relative positions of the first guide member and the second guide member in the third embodiment.

[0068] Figure 20 This is a top view showing the first door of the fourth embodiment.

[0069] Figure 21 This is a diagram showing the state of the main door in the fourth embodiment open to its maximum opening angle.

[0070] Figure 22 This is a diagram illustrating the first hinge mechanism and the second hinge mechanism of the fifth embodiment. Detailed Implementation

[0071] Hereinafter, some embodiments of the present invention will be described in detail with reference to the exemplary accompanying drawings. It should be noted that when assigning reference numerals to the constituent elements of each drawing, the same constituent elements, although labeled on different drawings, are assigned the same numerals as much as possible. Furthermore, in the process of describing the embodiments of the present invention, detailed descriptions of related well-known structures or functions are omitted if they are deemed to hinder understanding of the embodiments of the present invention.

[0072] Furthermore, when describing the constituent elements of embodiments of this utility model, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the constituent elements from other constituent elements and do not limit the nature, order, or sequence of the corresponding constituent elements. When a constituent element is described as being "connected," "combined," or "joined" to other constituent elements, it should be understood that the aforementioned constituent element can be directly connected or joined to the aforementioned other constituent elements, and that each constituent element may also be "connected," "combined," or "joined" with another constituent element.

[0073] In this specification, the front of the secondary door is the side that forms the front appearance of the first door, and the back of the secondary door is the side facing the main door.

[0074] The front of the main door forms the front appearance of the main door, and is the side facing the back of the secondary door. The back of the main door is the side facing the cabinet or storage space.

[0075] The front of the main door faces the secondary door, and the rear of the main door faces the cabinet or storage space.

[0076] The front and back directions can indicate the arrangement of the box and the first door.

[0077] Figure 1 This is a perspective view of the refrigerator according to the first embodiment. Figure 2 This is an exploded perspective view of the first gate in the first embodiment.

[0078] Reference Figure 1 and Figure 2 In this embodiment, the refrigerator 1 can be set up separately in the kitchen, or it can be set up as a furniture cabinet or wall to be housed in the room (hereinafter collectively referred to as "furniture cabinet").

[0079] When the refrigerator 1 is installed inside an indoor furniture cabinet, the refrigerator 1 can be installed alone or arranged side by side with other refrigerators.

[0080] The refrigerator 1 may include a cabinet 10 with storage space. The refrigerator 1 may also include a door 20 for opening and closing the storage space.

[0081] Although not limited, the storage space can be divided into an upper first space 11 and a lower second space 12. The door 20 may also include a first door 21 for opening and closing the first space 11 and a second door 22 for opening and closing the second space 12.

[0082] The first space can be a refrigerator compartment, and the second space can be a freezer compartment, or vice versa. Alternatively, the storage space can include a first space and a second space that are separated into left and right sides. Alternatively, the storage space can be a single space, or it can be opened and closed using a single door.

[0083] One or more of the first door 21 and the second door 22 may be a revolving door. Alternatively, a single door 20 may be a revolving door. Hereinafter, the first door 21 will be described using a revolving door 20 as an example.

[0084] The following explanation will be based on the case where multiple first doors 21 are arranged in a left-right configuration to open and close the first space 11.

[0085] One or more of the plurality of first doors 21 may include a main door (or inner door) 30 and a secondary door (or outer door) 40 that is rotatable relative to the main door 30.

[0086] The main door 30 can open and close the first space 11. The main door 30 may include a first door frame 310, which includes an opening 312. Insulation material may be provided inside the first door frame 310.

[0087] With the main door 30 closed, the opening 312 can communicate with the first space 11. Furthermore, although not shown, the main door 30 may be fitted with a frame forming a door storage space, and the opening 312 can communicate with this door storage space. The door storage space can communicate with the first space 11.

[0088] The secondary door 40 may form part or all of the front appearance of the first door 21. The secondary door 40 can open and close the opening 312. As an example, the secondary door 40 may cover the opening 312. The left and right width of the secondary door 40 may be the same as or similar to the left and right width of the main door 30.

[0089] The secondary door 40 may include a second door frame 410. Thermal insulation material may also be provided inside the second door frame 410.

[0090] The second door frame 410 can be configured to restrict light transmission. Furthermore, the secondary 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 more than one panel capable of transmitting light.

[0091] If the secondary door 40 includes a panel assembly capable of transmitting light, and the lighting unit provided on the housing 10, the main door 30, or the secondary door 40 is turned on when the main door 30 and the secondary door 40 are closed, the items stored in the main door 30 or the secondary door 40 can be identified by the panel assembly.

[0092] When the main door 30 rotates, the secondary door 40 can rotate together with the main door 30.

[0093] Although not illustrated, the first door 21 may include a locking device for locking the main door 30 and the secondary door 40, and an operating part for user operation to unlock the locking device.

[0094] If the main door 30 and the secondary door 40 are locked under the action of the locking device, then when the main door 30 or the secondary door 40 is rotated, the main door 30 and the secondary door 40 can rotate together.

[0095] If the main door 30 and the secondary door 40 are unlocked by operating the operating unit, the secondary door 40 can be rotated when the main door 30 is closed.

[0096] In this embodiment, the locking device and the operating part can be implemented using known technologies, therefore detailed descriptions are omitted.

[0097] The first door 21 can be rotatably connected to the housing 10 using a first hinge mechanism 50 and a second hinge mechanism 60.

[0098] The first hinge mechanism 50 can be connected to the upper side of the first door 21. The second hinge mechanism 60 can be connected to the lower side of the first door 21. The first hinge mechanism 50 can be referred to as the upper hinge mechanism. The second hinge mechanism 60 can be referred to as the lower hinge mechanism.

[0099] In this embodiment, the main door 30 can rotate relative to the housing 10 using the first hinge mechanism 50 and the second hinge mechanism 60.

[0100] Furthermore, the secondary door 40 can also rotate relative to the main door 30 or the housing 10 using the first hinge mechanism 50 and the second hinge mechanism 60.

[0101] That is, the first hinge mechanism 50 and the second hinge mechanism 60 can not only enable the main door 30 and the secondary door 40 to rotate together, but also enable the secondary door 40 to rotate independently.

[0102] Figure 3 This is an exploded perspective view of the first hinge mechanism of the first embodiment. Figure 4 This is an exploded perspective view of the second hinge mechanism in the first embodiment. Figure 5 This is a diagram showing the upper side of the main door in the first embodiment. Figure 6 This is a diagram showing the upper side of the secondary door in the first embodiment.

[0103] Reference Figures 2 to 6 The first hinge mechanism 50 may include a first hinge body 510. The first hinge body 510 may be attached to the top or front surface of the housing 10. A portion of the first hinge body 510 may overlap with the upper side of the first door 21 in the vertical direction.

[0104] A portion of the first hinge body 510 may overlap with the upper side of the main door 30 in the vertical direction. A portion of the first hinge body 510 may overlap with the upper side of the secondary door 40 in the vertical direction.

[0105] The first hinge mechanism 50 may further include a first pin unit 520.

[0106] The first pin unit 520 may be integrally formed with or combined with the first hinge body 510.

[0107] 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 configured spaced apart from each other in the first hinge body 510.

[0108] As an example, the first pin 521 and the second pin 522 can extend from the first hinge body 510 toward the first door 21. The first pin 521 and the second pin 522 can extend downward from the first hinge body 510.

[0109] As another example, the first pin 521 and the second pin 522 can be connected using a connecting member. In this case, it can also be understood that the first pin unit 520 includes a single pin. The single pin can be formed non-circular, but the single pin can include a curve so as not to interfere with the wall forming the first groove 532 (described later) during the opening of the first door 21. At least a portion of the curve can have the same curvature as the first groove 532.

[0110] The first hinge mechanism 50 may further include a first guide member 530.

[0111] The first guide member 530 may include a first pin groove 532 for receiving the first pin unit 520. As an example, the first pin unit 520 may pass through the first pin groove 532.

[0112] The first guide member 530 may be attached to the main door 30. Alternatively, the first guide member 530 may be omitted, and the first pin groove 532 may be formed in the main door 30. In this case, the first pin groove 532 may extend through the main door 30, and one wall of the main door 30 may form the first pin groove 532.

[0113] The first hinge mechanism 50 may further include a second guide member 540.

[0114] The second guide member 540 may include a second pin groove 542 that accommodates the first pin unit 520.

[0115] The second guide member 540 may be attached to the sub-door 40. Alternatively, the second guide member 540 may be omitted, and the second pin groove 542 may be formed in the sub-door 40. In this case, the second pin groove 542 may be formed as one side of the sub-door 40 is recessed, and the second pin groove 542 may be formed on one wall of the sub-door 40.

[0116] In this embodiment, the first pin unit 520 can pass through the main door 30 and be accommodated in the secondary door 40.

[0117] The main door 30 may include a first extension 316 extending forward from the front face 30a of the main door 30. That is, the first extension 316 can extend from the front face 30a of the main door 30 toward the secondary door 40.

[0118] The first extension 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 extensions 316 may be arranged vertically spaced apart. Since the upper first extension 316 and the lower first extension are formed in corresponding shapes, only the upper first extension 316 will be described below.

[0119] At least a portion of the first pin groove 532 may be located in the first extension 316.

[0120] The main door 30 may include a receiving portion 318 recessed from the front side 30a to the back side 30b of the main door 30. A portion of the secondary door 40 may be accommodated in the receiving portion 318.

[0121] At least a portion of the first pin groove 532 can be aligned with the receiving portion 318.

[0122] As an example, a portion of the first pin groove 532 may be located in the first extension 316, and another portion of the first pin groove 532 may overlap with the receiving portion 318 in the vertical direction.

[0123] A portion of the first pin groove 532 may extend through the first extension 316 in a vertical direction. Another portion of the first pin groove 532 may extend downward from the top surface 30c of the main door 30 and communicate with the receiving portion 318.

[0124] Therefore, a portion of the first pin groove 532 can be located closer to the front than the front 30a of the main door 30, and another portion can be located closer to the rear than the front 30a of the main door 30.

[0125] The first pin groove 532 (or the first guide member 530) may include a first end 532a and a second end 532b located on the opposite side of the first end 532a.

[0126] When the main door 30 is closed, the first pin 521 may contact or be adjacent to the first end 532a. When the main door 30 is open to its maximum opening angle, the second pin 522 may contact or be adjacent to the second end 532b.

[0127] The first end portion 532a and the second end portion 532b may be located closer to the front than the front face 30a of the main door 30. The first end portion 532a and the second end portion 532b may be located at the first extension 316.

[0128] The first pin groove 532 can extend from the first end 532a toward the direction close to the receiving portion 318, and after extending into the receiving portion 318, it bends and extends away from the receiving portion 318.

[0129] The secondary door 40 may further include hinge mounting portions 412 and 412a. The hinge mounting portion 412 can accommodate the first extension 316. Corresponding to the plurality of first extensions 316, hinge mounting portions 412 and 412a are respectively provided on the upper and lower sides of the secondary door 40. Since the upper hinge mounting portion 412 and the lower hinge mounting portion 412a are formed in corresponding shapes, the hinge mounting portion 412 provided on the upper side of the secondary door 40 will be described below.

[0130] The hinge mounting portion 412 can be formed by the downward recess of the top surface 40c of the secondary door 40.

[0131] The secondary door 40 may further include a second extension 414 extending rearward from the rear side 40b of the secondary door 40. That is, the second extension 414 can extend from the rear side 40b of the secondary door 40 toward the main door 30.

[0132] The second extension 414 can be accommodated in the accommodating portion 318.

[0133] At least a portion of the second pin groove 542 may be located in the hinge mounting portion 412. At least a portion of the second pin groove 542 may be located in the second extension portion 414.

[0134] As an example, if the second extension 414 is accommodated in the accommodating portion 318 and the first extension 316 is located in the hinge mounting portion 412, then the first pin groove 532 and the second pin groove 542 can be aligned in the vertical direction.

[0135] The second pin groove 542 (or the second guide member 540) may include a first end 542a and a second end 542b located on the opposite side of the first end 542a.

[0136] When the main door 30 and the secondary door 40 are closed, the first pin 521 may contact or be adjacent to the first end 542a. When the main door 30 or the secondary door 40 is open to its maximum opening angle, the second pin 522 may contact or be adjacent to the second end 542b.

[0137] The first end portion 542a and the second end portion 542b may be closer to the front than the rear side 40b of the secondary door 40. The first end portion 542a and the second end portion 542b may be located at the hinge mounting portion 412.

[0138] The second pin groove 542 can bend and extend away from the second extension 414 (towards the front side 40a of the secondary door) after extending from the first end 542a toward the second extension 414.

[0139] On the other hand, the second hinge mechanism 60 may include a second hinge body 610. The second hinge body 610 may be attached to the front or bottom surface of the housing 10. A portion of the second hinge body 610 may overlap with 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.

[0140] The second hinge mechanism 60 may further include a second pin unit 620.

[0141] The second pin unit 620 may be integrally formed with or combined with the second hinge body 610.

[0142] As an example, the second hinge body 610 may include a connecting portion 611 coupled to the housing 10 and an extension portion 612 extending from the connecting portion 611. The second pin unit 620 may be disposed in the extension portion 612.

[0143] The second hinge mechanism 60 may further include a first guide member 630 and a second guide member 640.

[0144] The structure and function of the second hinge mechanism 60 are the same as those of the first hinge mechanism 50, therefore detailed description is omitted.

[0145] When refrigerator 1 is installed in a furniture cabinet or in the kitchen, it is necessary to increase the opening angle of the first door 21 so that the first door 21 does not interfere with the furniture cabinet or surrounding structures during the opening process.

[0146] In this embodiment, the first hinge mechanism 50 and the second hinge mechanism 60 can be used to increase the opening angle so that the first door 21 does not interfere with the furniture cabinet or surrounding structures.

[0147] When the main door 30 and the secondary door 40 rotate together, the opening angle can be increased without interfering with the furniture cabinet or surrounding structures. Furthermore, when only the secondary door 40 rotates, the opening angle can also be increased without interfering with the furniture cabinet or surrounding structures.

[0148] As an example, the first hinge mechanism 50 and the second hinge mechanism 60 can move the rotation center of the main door 30 within at least a portion of the overall open area of ​​the main door 30. In this case, the rotation center can move in a direction away from the furniture cabinet.

[0149] In this embodiment, the rotation center of the main door 30 can be moved according to the shape of the first pin groove 532 and the second pin groove 542.

[0150] The first pin groove 532 and the second pin groove 542 can be aligned vertically. The first pin groove 532 and the second pin groove 542 can be formed with the same shape, the same size, or different sizes.

[0151] Depending on the shape of the pin slots 532 and 542, the rotation center of the main door 30 can move continuously or in stages.

[0152] Figure 7 It is along Figure 2 Sectional view cut in 7-7 Figure 8 It is along Figure 2 8-8 is a sectional view cut open.

[0153] Reference Figures 2 to 8 The main door 30 may also include a hole 317 for the insertion of the first guide member 530.

[0154] The first guide member 530 may include a body 531 having the first pin groove 532 and a flange 533 extending from the body 531.

[0155] The flange 533 can extend horizontally from the upper end of the body 531. The main door 30 may also include a mounting groove 317a for mounting the flange 533. The mounting groove 317a may be formed along the periphery of the hole 317.

[0156] With the flange 533 positioned in the mounting groove 317a, the downward movement of the first guide member 530 can be restricted.

[0157] In order for the first pin unit 520 to pass through the first guide member 530, the first guide member 530 may include an upper opening 535 and a lower opening 536.

[0158] The secondary door 40 may also include a receiving groove 413 for accommodating the second guide member 540.

[0159] The first pin unit 520 can pass through the first pin groove 532 and be accommodated in the second pin groove 542.

[0160] With the first pin unit 520 accommodated in the second pin groove 542, the first pin unit 520 can be separated from the bottom of the second guide member 540.

[0161] The second extension 414 of the sub-door 40 may include a plurality of intersecting faces.

[0162] 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.

[0163] The second surface 414b may be inclined to the first surface 414a, and the third surface 414c may be inclined to the first surface 414a.

[0164] The second surface 414b can extend from one end of the first surface 414a toward the front surface 40a of the secondary door 40. The third surface 414c can extend from the other end of the first surface 414a toward the front surface 40a of the secondary door 40.

[0165] The width of the second extension 414 can increase as it moves closer to the front face 40a of the secondary door 40 from the first face 414a.

[0166] As another example, the second extension 414 may include a single curved surface forming an arc. The curvature of the surface may be constant. Alternatively, the curvature of the surface may be variable.

[0167] The receiving portion 318 of the main door 30 may be formed in a shape corresponding to or similar to the second extension 414.

[0168] With the second extension 414 accommodated within the receiving portion 318, the second extension 414 can be separated from the surface forming the receiving portion 318. That is, a gap can be formed between the surfaces forming the second extension 414 and the receiving portion 318. Under the influence of this gap, when the secondary door 40 rotates relative to the main door 30, interference between the second extension 414 and the main door 30 can be prevented.

[0169] The surfaces forming the receiving portion 318 may include a plurality of intersecting portions.

[0170] The plurality of said portions may include: a first portion 318a; a second portion 318b located on one side of the first portion 318a; and a third portion 318c located on the other side of the first portion 318a.

[0171] The second portion 318b may be tilted relative to the first portion 318a, and the third portion 318c may be tilted relative to the first portion 318a.

[0172] With the secondary door 40 closed, the first surface 414a can face the first portion 318a. The second surface 414b can face the second portion 318b. The third surface 414c can face the third portion 318c.

[0173] The following describes the process of opening the main door 30 and the secondary door 40 together.

[0174] Figure 9 (a) is a diagram showing the main door in the closed state. Figure 9 (b) is a diagram showing the main door at its first open angle.

[0175] Figure 10 (a) is a diagram showing the state where the main gate is open to a second angle greater than the first angle. Figure 10 (b) is a diagram showing the state where the main gate is open to a third angle greater than the second angle.

[0176] Figure 11 This is a diagram showing the main door open to its maximum opening angle.

[0177] As an example, in Figures 9 to 11 by Figure 8 The cross-section shown illustrates the configuration of the pin unit and pin slot.

[0178] Reference Figures 2 to 11 When the main door 30 and the secondary door 40 are locked, rotating either the main door 30 or the secondary door 40 will cause both doors to rotate together. Although not shown in the diagram, a handle may be located on the secondary door 40. Alternatively, the handle may be located on the main door 30 or not.

[0179] During the rotation of the main door 30, the first pin groove 532 and the second pin groove 542 move relative to the first pin unit 520, so that the relative positions of the first pin unit 520 and the respective pin grooves 532 and 542 can change.

[0180] Reference Figure 9 (a) When the main door 30 is in the closed state, the main door 30 can rotate about the first rotation center C1 as a reference when the main door 30 starts to open.

[0181] In this specification, the rotation center of the main door 30 can be a virtual rotation center of the main door 30.

[0182] The first rotation center C1 may be located at the secondary door 40. The first rotation center C1 may be located at the first extension 316 of the main door 30.

[0183] Reference Figure 9 (b) In the state where the main door 30 is rotated to the first angle, the main door 30 can rotate with respect to the second rotation center C2. That is, during the process of the main door 30 opening to the first angle, the rotation center of the main door 30 can move. The second rotation center C2 can be located outside the first door 21. That is, the second rotation center C2 can be located outside the main door 30 and the secondary door 40.

[0184] The second rotation center C2 can be located further away from the front 10a of the housing 10 than the first rotation center C1.

[0185] Reference Figure 10 (a) In the state where the main door 30 is rotated to the second angle, the main door 30 can rotate around the third rotation center C3. That is, during the process of the main door 30 opening to the second angle, the rotation center of the main door 30 can move. The third rotation center C3 can be located at the secondary door 40. The third rotation center C3 can be located at the first extension 316.

[0186] The third rotation center C3 can be located closer to the front 10a of the housing 10 than the second rotation center C2.

[0187] A virtual line A1 can be defined extending in the front-back direction on the first side adjacent to the first pin unit 520 on both sides of the housing 10.

[0188] At this time, the distance between the virtual line A1 and the third rotation center C3 can be greater than the distance between the virtual line A1 and the second rotation center C2.

[0189] Reference Figure 10 (b) In the state where the main door 30 is rotated to the third angle, the main door 30 can rotate around the fourth rotation center C4. That is, during the process of the main door 30 opening to the third angle, the rotation center of the main door 30 can move. The fourth rotation center C4 can be located at the secondary door 40. The fourth rotation center C4 can be located at the first extension 316.

[0190] The fourth rotation center C4 can be further away from the front 10a of the housing 10 than the third rotation center C3.

[0191] The distance between the virtual line A1 and the fourth rotation center C4 can be greater than the distance between the virtual line A1 and the third rotation center C3.

[0192] Reference Figure 11 Before the main door 30 opens to its maximum opening angle, the main door 30 can rotate around a fifth rotation center C5. The fifth rotation center C5 can be located at the secondary door 40. The fifth rotation center C5 can be located at the first extension 316.

[0193] The fifth rotation center C5 can be further away from the front 10a of the housing 10 than the fourth rotation center C4.

[0194] The distance between the virtual line A1 and the fifth rotation center C5 can be less than the distance between the virtual line A1 and the fourth rotation center C4.

[0195] In this embodiment, within a portion of the overall open area of ​​the main door 30, the rotation center of the main door 30 can move in a direction away from the front 10a of the housing 10.

[0196] In another part of the overall open area of ​​the main door 30, the rotation center of the main door 30 can move toward the front 10a of the housing 10.

[0197] Within a portion of the overall open area of ​​the main door 30, the rotation center of the main door 30 can move in a direction away from the virtual line A1 (or the side of the furniture cabinet).

[0198] In another part of the overall open area of ​​the main door 30, the rotation center of the main door 30 can move toward the virtual line A1.

[0199] Next, the process of rotating the secondary door 40 will be explained.

[0200] Figure 12 (a) is a diagram showing the secondary door at its first open angle. Figure 12 (b) is a diagram showing the state where the secondary gate is open to a second angle greater than the first angle. Figure 13 (a) is a diagram showing the state where the secondary gate is open to a third angle greater than the second angle. Figure 13 (b) is a diagram showing the secondary door open to its maximum opening angle.

[0201] As an example, in Figure 12 and Figure 13 by Figure 8 The cross-section shown illustrates the configuration of the pin unit and pin slot.

[0202] In this embodiment, the rotation center of the secondary door 40 may be the same as the rotation center of the main door 30.

[0203] Reference Figures 9 to 13 If the main door 30 and the secondary door 40 are unlocked by the operation unit, the secondary door 40 can be opened while the main door 30 is closed.

[0204] During the opening of the secondary door 40, the second pin groove 542 moves, which may cause the relative position of the first pin unit 520 and the second pin groove 542 to change.

[0205] When the secondary door 40 is closed, it can rotate around the first rotation center C1 when it begins to open.

[0206] Reference Figure 12 (a) In the state where the secondary door 40 is rotated by the first angle, the secondary door 40 can rotate with respect to the second rotation center C2. The second rotation center C2 can be located outside the secondary door 40. The second rotation center C2 can be located outside or inside the main door 30.

[0207] Reference Figure 12 (b) In the state where the secondary door 40 is rotated to the second angle, the secondary door 40 can rotate with the third rotation center C3 as a reference.

[0208] The third rotation center C3 can be located at the secondary door 40. The third rotation center C3 can be located at the main door 30.

[0209] Reference Figure 13 (a) In the state where the secondary door 40 is rotated to the third angle, the secondary door 40 can rotate with respect to the fourth rotation center C4. The fourth rotation center C4 can be located on the secondary door 40. The fourth rotation center C4 can be located outside the main door 30. However, depending on the curvature of the second pin groove 542, the fourth rotation center C4 can also be located on the main door 30.

[0210] Reference Figure 13 (b) Before the secondary door 40 opens to its maximum opening angle, the secondary door 40 may rotate about the fifth rotation center C5. The fifth rotation center C5 may be located on the secondary door 40. The fifth rotation center C5 may be located outside the main door 30.

[0211] Within a portion of the overall open area of ​​the secondary door 40, the rotation center of the secondary door 40 may be located inside the main door 30.

[0212] In another part of the overall open area of ​​the secondary door 40, the rotation center of the secondary door 40 may be located outside the main door 30.

[0213] Within a portion of the overall open area of ​​the secondary door 40, the rotation center of the secondary door 40 may be located inside the secondary door 40.

[0214] In another portion of the overall open area of ​​the secondary door 40, the rotation center of the secondary door 40 may be located outside the secondary door 40.

[0215] According to this embodiment, since the main door or the secondary door opens while the rotation center of the main door and the secondary door moves, it has the advantage of increasing the opening angle of the main door and the secondary door.

[0216] According to this embodiment, since the rotation centers of the main door and the secondary door can move in a direction away from the furniture cabinet, it is possible to prevent the door from interfering with the surrounding structures during the opening process.

[0217] According to this embodiment, since the main door and the secondary door can be opened while being guided to rotate by a single pin unit, it has the advantage of being able to rotate the main door and the secondary door using a simple structure.

[0218] Figure 14 This is a perspective view of a refrigerator with a first hinge mechanism according to the second embodiment. Figure 15 It is along Figure 14 A sectional view cut 15-15.

[0219] The other parts of this embodiment are the same as those of the first embodiment; however, the shape of the first door and a portion of the structure of the first hinge mechanism differ. Therefore, only the characteristic parts of this embodiment will be described below.

[0220] Reference Figure 14 and Figure 15 In this embodiment, the first door 21A may include a main door 70 and a secondary door 72. The main door 70 and the secondary door 72 can rotate using a first hinge mechanism 50A.

[0221] The first hinge mechanism 50A may include a first hinge body 510 and a first pin unit 520. The first hinge body 510 and the first pin unit 520 may be the same as in the first embodiment, therefore detailed description is omitted.

[0222] The first hinge mechanism 50A may further include a first guide member 530A. The first guide member 530A may have a first pin groove 532 through which the first pin unit 520 passes.

[0223] The first hinge mechanism 50A may further include a second guide member 540A. The second guide member 540A may have a second pin groove 534.

[0224] Unlike the first embodiment, the first guide member 530A can be disposed on the secondary door 72, and the second guide member 540A can be disposed on the main door 70. Alternatively, the first pin groove 532 can be disposed on the secondary door 72, and the second pin groove 534 can be disposed on the main door 70.

[0225] The main door 70 may include a first extension 702 extending forward from the front of the main door 70. The top surface 704 of the first extension 702 may be located at a lower position than the top surface of the main door 70.

[0226] The main door 70 may also include a receiving portion 705 formed by a downward recess on its top surface. The bottom of the receiving portion 705 may be formed at the same height as the top surface 704 of the first extension 702 or form a continuous surface.

[0227] The left and right width of the secondary door 72 can be smaller than the left and right width of the main door 70.

[0228] When the secondary door 72 is closed, the first extension 702 can be located on one side of the secondary door 72. At this time, the side 721 of the secondary door 72 can be separated from the first extension 702. Therefore, interference between the secondary door 72 and the first extension 702 can be prevented during the opening of the secondary door 72.

[0229] The secondary door 72 may further include a second extension 722. As an example, the second extension 722 may extend horizontally from the upper end of the side surface 721 of the secondary door 72. At least a portion of the second extension 722 may overlap with the first extension 702 in the vertical direction. The second extension 722 may be located above the first extension 702.

[0230] As an example, a portion of the second extension 722 may overlap with the first extension 702 in the vertical direction, and another portion may be accommodated in the accommodating portion 705.

[0231] Another portion of the second extension 722 may protrude rearward from the back of the secondary door 72. That is, the second extension 722 may include a protrusion 724 accommodated in the accommodating portion 705. The protrusion 724 may be formed in a shape corresponding to the second extension 414 described in the first embodiment. The accommodating portion 705 may be formed in a shape corresponding to the accommodating portion 318 described in the first embodiment.

[0232] The first guide member 530A may be disposed in the second extension 722. Therefore, the first pin unit 520 may pass through the second extension 722.

[0233] A portion of the second guide member 540A may be located in the first extension 702, and another portion may be located in the receiving portion 705.

[0234] In this embodiment, the opening angle of the main door can also be increased when the main door and the secondary door rotate together.

[0235] In addition, since the main door and the secondary door can open while being guided to rotate by a single pin unit, it has the advantage of being able to rotate the main door and the secondary door using a simple structure.

[0236] Figure 16 This is a perspective view of the first door of the third embodiment. Figure 17 This is an exploded perspective view of the first gate in the third embodiment.

[0237] Figure 18 It is along Figure 16 Sectional view cut at 18-18, Figure 19 This is a diagram showing the relative positions of the first guide member and the second guide member in the third embodiment.

[0238] The other parts of this embodiment are the same as those of the first embodiment, but it is characterized by having an additional hinge mechanism for the rotation of the secondary door. Therefore, only the characteristic parts of this embodiment will be described below, and the same reference numerals will be used for configurations identical to those in the first embodiment.

[0239] Reference Figures 16 to 19 In this embodiment, the first door 21 may include a main door 30 and a secondary door 40.

[0240] The first hinge mechanism 50B in this embodiment may include a main hinge mechanism 560 and a secondary hinge mechanism 570. The main hinge mechanism 560 enables the main door 30 to rotate relative to the housing 10. The secondary hinge mechanism 570 enables the secondary door 40 to rotate relative to the main door 30.

[0241] The main hinge mechanism 560 may include a first hinge body 510 and a first pin unit 520. The structure of the first hinge body 510 and the first pin unit 520 is the same as in the first embodiment, so detailed description is omitted.

[0242] The main hinge mechanism 560 may further include a first guide member 550. The first guide member 550 may include a first pin groove 552 that receives the first pin unit 520.

[0243] The first pin groove 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.

[0244] The first guide member 550 may be attached to the extension 316. Alternatively, the first guide member 550 may be omitted, and the first pin groove 552 may be formed in the extension 316. Unlike the first embodiment, the first pin unit 520 may not penetrate the extension 316. Alternatively, even if the first pin unit 520 penetrates the extension 316, it may not be accommodated in the secondary door 40. That is, the lower end of the first pin unit 520 may be located at a position higher than the bottom of the hinge mounting portion 412 of the secondary door 40.

[0245] The secondary hinge mechanism 570 may include a second pin unit 572 and a second guide member 574 that accommodates the second pin unit 572.

[0246] The second pin unit 572 may be integrally formed with or combined with the first extension 316. The second pin unit 572 may extend downward from the first extension 316.

[0247] The secondary door 40 can rotate around the second pin unit 572 as its rotation center. That is, during the opening of the main door 30, the rotation center of the main door 30 can move. Conversely, during the rotation of the secondary door 40, the rotation center SC1 of the secondary door 40 can be fixed.

[0248] The second guide member 574 may be provided at the bottom of the hinge mounting portion 412 of the secondary door 40. The second guide member 574 may form a second pin groove 575.

[0249] A groove 420 for inserting the second guide member 574 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 groove 575 may be recessed downward from the bottom of the hinge mounting portion 412.

[0250] At least a portion of the second pin groove 575 may be located closer to the front 40a of the secondary door 40 than the first pin groove 552.

[0251] The side of the secondary door 40 adjacent to the second pin groove 575 can be referred to as the first side 40d. At least a portion of the second pin groove 575 can be located closer to the first side 40d than the first pin groove 552.

[0252] The rotation center SC1 of the secondary door 40 can be located closer to the front face 40a of the secondary door 40 than the first pin groove 552.

[0253] Simultaneously refer to Figures 9 to 11 as well as Figure 18 The first rotation center C1 to the fifth rotation center C5 of the main door 30 can be further away from the front 10a of the box body 10 than the rotation center SC1 of the secondary door 40.

[0254] Within a portion of the overall open area of ​​the main door 30, the rotation center of the main door 30 may be located closer to the virtual line A1 than the rotation center SC1 of the secondary door 40.

[0255] In another part of the overall open area of ​​the main door 30, the rotation center SC1 of the secondary door 40 may be located closer to the virtual line A1 than the rotation center of the main door 30.

[0256] Alternatively, the second pin unit may be formed in the secondary door, and the second pin groove may be formed in the main door.

[0257] On the other hand, the second hinge mechanism located on the lower side of the first door 21 is symmetrical to the first hinge mechanism, so detailed description is omitted.

[0258] Figure 20 This is a top view showing the first door of the fourth embodiment. Figure 21 This is a diagram showing the state of the main door in the fourth embodiment open to its maximum opening angle.

[0259] The other parts of this embodiment are the same as those of the third embodiment, except that the positions of the first pin unit and the first pin groove are different. Therefore, only the characteristic parts of this embodiment will be described below. The same reference numerals are used as in the third embodiment.

[0260] Reference Figure 20 and Figure 21 In this embodiment, the first door 21 may include a main door 30 and a secondary door 40.

[0261] The first hinge mechanism 50C in this embodiment may include a main hinge mechanism 560A and a secondary hinge mechanism 570.

[0262] The main hinge mechanism 560A allows the main door 30 to rotate relative to the housing 10. The secondary hinge mechanism 570 allows the secondary door 40 to rotate relative to the main door 30.

[0263] The main hinge mechanism 560A may include a first hinge body 710 having a first pin groove 712 and a first pin unit 720.

[0264] The secondary hinge mechanism 570 may include a second pin unit 572 and a second pin groove 575. The structure of the secondary hinge mechanism 570 may be the same as that of the secondary hinge mechanism described in the third embodiment.

[0265] As an example, the first pin unit 720 may be attached to the upper side of the main door 30 or formed as an integral part of the main door 30.

[0266] The first pin unit 720 may include a first pin 722 and a second pin 724 spaced apart from each other.

[0267] The first pin 722 and the second pin 724 may be integrally formed 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, the plate being attached to the main door 30.

[0268] The first pin 722 and the second pin 724 can 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. Alternatively, the first pin 722 and the second pin 724 can also be spaced apart in the X-axis direction, which intersects the Y-axis direction.

[0269] The first pin groove 712 may be a hole through which the first pin 722 and the second pin 724 pass or a groove through which the first pin 722 and the second pin 724 are inserted.

[0270] The first pin groove 712 may include a first groove portion 713. The first groove portion 713 may extend in a direction intersecting the X-axis and Y-axis. The first groove portion 713 may guide the first pin 722 during the opening and closing of the main door 30. The first groove portion 713 may extend in a curved shape.

[0271] The first pin groove 712 may further include a second groove 714 extending from the first groove 713. The second groove 714 may extend from a position spaced apart from the two ends 713a, 713b of the first groove 713. The second groove 714 may guide the second pin 724 during the opening and closing process of the main door 30. The second groove 714 may extend in a curved shape.

[0272] The first slot 712 may further include a third slot 715 extending from the first slot 713. The third slot 715 may be located on the opposite side of the second slot 714 in the first slot 713.

[0273] During the closing process of the main door 30, the first pin 722 may contact or be adjacent to the first end 713a, and the second pin 724 may contact or be adjacent to the end of the third groove 715.

[0274] During the process of the main door 30 opening to the maximum opening angle, the first pin 722 may contact or be adjacent to the end 714a of the second groove 714, and the second pin 724 may contact or be adjacent to the second end 713b of the first groove 713.

[0275] In this embodiment, the second hinge mechanism connected to the lower side of the first door 21 can be configured to be symmetrical with the first hinge mechanism in the vertical direction, so detailed description is omitted.

[0276] Figure 22 This is a diagram illustrating the first hinge mechanism and the second hinge mechanism of the fifth embodiment.

[0277] Reference Figure 22 Other parts of this embodiment are the same as some embodiments, including the first embodiment; however, the shape of the guide member differs. Therefore, only the characteristic parts of this embodiment will be described below.

[0278] Reference Figure 22 The hinge mechanism in this embodiment may include a first hinge mechanism 90 (or an upper hinge mechanism) and a second hinge mechanism 950 (or a lower hinge mechanism).

[0279] The first hinge mechanism 90 may include a first hinge body 910 and a first pin unit 920.

[0280] As an example, the first pin unit 920 can extend from the first hinge body 910 toward the first door 21. The first pin unit 920 can also extend downward from the first hinge body 910.

[0281] 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 configured spaced apart from the first hinge body 910.

[0282] The basic form and function of the first pin 921 and the second pin 922 are the same as those of the first pin and the second pin in the first embodiment, so detailed description is omitted.

[0283] The first hinge mechanism 90 may include a first guide member 930.

[0284] The first guide member 930 can be divided into two members. As an example, the first guide member 930 may include a first member 930a and a second member 930b.

[0285] The first pin unit 920 can be accommodated in the second component 930b after passing through the first component 930a. As an example, either the first component 930a or the second component 930b can be disposed in the main door 30, and the other can be disposed in the secondary door 40.

[0286] The first guide member 930 can form a first pin groove.

[0287] As an example, the first component 930a and the second component 930b can each form a first pin groove.

[0288] The first pin slot may include first slots 942 and 942a for accommodating the first pin 921 and second slots 944 and 944a for accommodating the second pin 922. The first slots 942 and 942a and the second slot 944a may be separated and configured separately.

[0289] The first component 930a may include an extension 931 that is fastened to the first door 21. A fastening hole 932 may be formed in the extension 931 for the fastening component to pass through. The fastening component can pass through the fastening hole 932 and be fastened to the first door 21.

[0290] Each of the first component 930a and the second component 930b may include a first main body portion 933 forming the first grooves 942, 942a and a second main body portion 934 forming the second grooves 944, 944a.

[0291] The second hinge mechanism 950 in this embodiment may include a second hinge body and a second pin unit 960.

[0292] As an example, the second hinge body may include a connecting portion 951 that engages with the housing 10 and an extension portion 952 extending from the connecting portion 951. The second pin unit 960 may be disposed in the extension portion 952.

[0293] As an example, the second pin unit 960 can extend upward from the extension 952.

[0294] 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 configured spaced apart from each other in the extension 952.

[0295] The second hinge mechanism 950 may further include a second guide member 970. The second guide member 970 may be disposed on the first door 21.

[0296] The second guide member 970 can be divided into two members. As an example, the second guide member 970 may include a first member 970a and a second member 970b.

[0297] The second pin unit 960 can be accommodated in the second member 970b after passing through the first member 970a.

[0298] As an example, either the first component 970a or the second component 970b can be located at the main door 30, and the other can be located at the secondary door 40.

[0299] The second guide member 970 can form a second pin groove.

[0300] The second pin slot may include a first slot 982, 982a accommodating the first pin 961 and a second slot 984, 984a accommodating the second pin 962. The first slot 982, 982a and the second slot 984, 984a may be separated and configured separately.

[0301] The first component 970a may include an extension 971 that is fastened to the first door 21. A fastening hole 972 may be formed in the extension 971 for the fastening component to pass through. The fastening component can pass through the fastening hole 972 and be fastened to the first door 21.

[0302] Each of the first component 970a and the second component 970b may include a first main body portion 973 forming the first grooves 982, 982a and a second main body portion 974 forming the second grooves 984, 984a.

[0303] In this embodiment, the rotation center of the first door 21 can also be moved using the first hinge mechanism 90 and the second hinge mechanism 950.

Claims

1. A refrigerator characterized by comprising: include: The box-like structure forms storage space; The door opens and closes the storage space; as well as A hinge mechanism rotatably connects the door to the housing; The gate includes: The main door is rotatable relative to the housing, allowing the storage space to be opened and closed; and The secondary door is capable of rotating relative to the main door; The hinge mechanism includes: The hinge body, disposed in the housing, has a pin unit; A first pin groove is provided in the main door, and the pin unit is accommodated in the first pin groove; and A second pin groove is provided in the secondary door, and the pin unit is accommodated in the second pin groove; The first pin groove and the second pin groove are aligned vertically. During the opening of the main door, the relative position of the first pin groove and the pin unit changes, causing the rotation center of the main door to move.

2. The refrigerator according to claim 1, characterized in that, The rotation center of the secondary door is the same as the rotation center of the main door.

3. The refrigerator according to claim 1, characterized in that, The pin unit is accommodated in the second pin groove after passing through the first pin groove.

4. The refrigerator according to claim 3, characterized in that, The main door includes a first extension that extends from the front of the main door toward the secondary door. At least a portion of the first pin groove is located in the first extension.

5. The refrigerator according to claim 4, characterized in that, The secondary door includes a hinge mounting portion, and the first extension portion is located at the hinge mounting portion. At least a portion of the second pin groove is located in the hinge mounting portion.

6. The refrigerator according to claim 5, characterized in that, The secondary door also includes a second extension extending from the back of the secondary door toward the main door side. The main door also includes a receiving portion, into which the second extension is received. A portion of the first pin groove is located in the first extension, and another portion protrudes into the receiving portion. A portion of the second pin groove is located in the hinge mounting portion, and another portion is located in the second extension portion.

7. The refrigerator according to claim 1, characterized in that, The pin unit is accommodated in the first pin groove after passing through the second pin groove.

8. The refrigerator according to claim 7, characterized in that, The main door includes a first extension that extends from the front of the main door toward the secondary door. At least a portion of the first pin groove is located in the first extension.

9. The refrigerator according to claim 8, characterized in that, The secondary door includes a second extension that extends from one side of the secondary door and is located above the first extension. At least a portion of the second pin groove is located in the second extension.

10. The refrigerator according to claim 9, characterized in that, The main door includes a recessed receiving portion extending from the front to the back of the main door. A portion of the second extension is located in the receiving portion. A portion of the first pin groove is located in the first extension, and another portion is located in the receiving portion. A portion of the second pin groove is located in the receiving portion.

11. The refrigerator according to claim 1, characterized in that, Within a portion of the main door's overall open area, the center of rotation of the main door moves away from the front of the enclosure. In another section, the rotation center of the main door moves toward the direction of the housing.

12. The refrigerator according to claim 1, characterized in that, Within a portion of the main door's overall open area, the rotation center of the main door is located outside the secondary door and the main door.

13. The refrigerator according to claim 1, characterized in that, When a virtual line is defined on one of the two sides of the housing as the first side of the face adjacent to the hinge mechanism, extending in the front-back direction... Within a portion of the main gate's overall open area, the main gate's rotation center moves away from the virtual line. In another section of the overall open area of ​​the main gate, the rotation center of the main gate moves toward the virtual line.

14. The refrigerator according to claim 1, characterized in that, Within a portion of the overall open area of ​​the secondary door, the rotation center of the secondary door is located inside the secondary door. In another portion of the overall open area of ​​the secondary door, the rotation center of the secondary door is located outside the secondary door.

15. The refrigerator according to claim 1, characterized in that, Within a portion of the overall open area of ​​the secondary door, the rotation center of the secondary door is located inside the main door. In another part of the overall open area of ​​the secondary door, the rotation center of the secondary door is located outside the main door.

16. A refrigerator, characterized in that, include: The box-like structure forms storage space; The main door opens and closes the storage space. The secondary door is capable of rotating relative to the main door; The main hinge mechanism enables the main door to rotate relative to the housing; as well as A secondary hinge mechanism allows the secondary door to rotate relative to the main door; The main hinge mechanism includes: The hinge body is disposed in the housing; A first pin unit is disposed in either the hinge body or the main door; and A first pin groove is provided on the other side of the hinge body and the main door, and the first pin unit is accommodated in the first pin groove. The secondary hinge mechanism includes: A second pin unit is disposed on either the main door or the secondary door; and The second pin groove is provided on the other side of the main door and the secondary door, and the second pin unit is accommodated in the second pin groove; During the opening of the main door, the relative position of the first pin groove and the first pin unit changes, causing the rotation center of the main door to move.

17. The refrigerator according to claim 16, characterized in that, The secondary door rotates around the second pin unit as the rotation center.

18. The refrigerator according to claim 16, characterized in that, At least a portion of the second pin groove is located closer to the front of the secondary door than the first pin groove.

19. The refrigerator according to claim 16, characterized in that, When the side of the secondary door adjacent to the secondary hinge mechanism is referred to as the first side, At least a portion of the second pin groove is located closer to the first side than the first pin groove.

20. The refrigerator according to claim 16, characterized in that, In at least a portion of the overall open area of ​​the main door, the rotation center of the main door is located further away from the front of the enclosure than the rotation center of the secondary door.

Images