Refrigerator

Abstract

The embodiment of the utility model provides a refrigerator, and belongs to the technical field of household appliances. The refrigerator comprises a refrigerator body; a door body; the hinge assembly comprises a mounting seat; the first rod piece is rotationally connected with the mounting seat through a first hinge shaft; the second rod piece is rotationally connected with the mounting seat through a second hinge shaft; the third rod piece is rotationally connected with the first rod piece through a third hinge shaft, and the third rod piece is rotationally connected with the second rod piece through a fourth hinge shaft; the fourth rod piece is rotationally connected with the second rod piece through a fifth hinge shaft; the fifth rod piece is rotationally connected with the third rod piece through a sixth hinge shaft and rotationally connected with the fourth rod piece through a seventh hinge shaft; when the door opening angle is a first door opening angle, the axis point of the sixth hinge shaft is located on a first reference line; when the door opening angle is a second door opening angle, the axis point of the sixth hinge shaft is located on a second reference line; when the door opening angle is larger than the second door opening angle, the axis point of the sixth hinge shaft is located on the outer side of the second reference line.

Description

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on May 21, 2024, with application number 202421117575.7 and application name “Refrigerator”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present disclosure relate to the technical field of household appliances, and in particular to a refrigerator. Background Art

[0003] Flush-mount refrigerators are currently attracting widespread attention. These are refrigerators that can be embedded within a cabinet, with the outer wall of the refrigerator typically within 5mm of the inner wall of the cabinet, and the front panel of the refrigerator door being approximately flush with the front panel of the cabinet.

[0004] In the related art, a flush-mounted refrigerator generally includes a cabinet, a door, and a biaxial hinge. The cabinet is constructed with a refrigeration compartment having an access opening. The door is connected to the cabinet through a biaxial hinge for opening or closing the access opening. A first track groove and a second track groove are provided at the top or bottom end of the door. The biaxial hinge includes a hinge plate, a first hinge shaft, and a second hinge shaft. The hinge plate is connected to the cabinet. The first hinge shaft and the second hinge shaft are both connected to the hinge plate and are slidably disposed in the first track groove and the second track groove, respectively. When a pulling force or a pushing force is applied to the door, the first hinge shaft slides in the first track groove and the second hinge shaft slides in the second track groove, so that the axis point of the door rotates relative to the cabinet moves, thereby preventing the door from interfering with the cabinet.

[0005] However, when using a dual-axis hinge, the limited thickness of the door limits the extension of the first and second track grooves. The front panel of the door is flush with the cabinet, leaving a gap of 2-4mm on either side. The maximum opening angle of the door is 90°-105°, and the maximum opening angle cannot be increased further. Furthermore, when the door is opened at its maximum angle, the distance the door can move outward relative to the cabinet is limited in the horizontal direction parallel to the plane of the access opening due to the limitations of the first and second track grooves. This causes the door to block the access opening, making it inconvenient to retrieve and place items.

[0006] To address the aforementioned technical issues, the inventors attempted to apply the hinges used in household storage cabinets to flush-mounted refrigerators. However, for refrigerators equipped with hinges described in the related art, the front panel of the door is flush with the cabinet, with a gap of 2-4 mm between the sides. The maximum opening angle of the door is 90° to 114°, and the maximum opening angle cannot be increased further. Furthermore, when the door is opened to the maximum angle, the door still blocks the access opening, making it inconvenient to remove and place items. Utility Model Content

[0007] The disclosed embodiments provide a refrigerator that can solve the technical problems that the door opening angle cannot be further increased and that the door body blocks the access opening when at the maximum opening angle, causing inconvenience in taking and placing items.

[0008] In a first aspect, an embodiment of the present disclosure provides a refrigerator, comprising:

[0009] A box body having a storage chamber, wherein the box body has a box front wall located at the front side and a box side wall connected to the box front wall;

[0010] a door body, which is used to open or close the storage chamber;

[0011] A hinge assembly connecting the box body and the door body, the hinge assembly comprising:

[0012] A mounting base connected to the front wall of the box;

[0013] a first rod, a first end of which is rotatably connected to the mounting base via a first hinge shaft;

[0014] a second rod, a first end of which is rotatably connected to the mounting base via a second hinge shaft, wherein the axis of the second hinge shaft is closer to the front wall of the box and closer to the center of the storage chamber than the axis of the first hinge shaft;

[0015] a third rod, wherein a middle portion thereof is rotatably connected to the second end of the first rod via a third hinge shaft, and a first end of the third rod is rotatably connected to the middle portion of the second rod via a fourth hinge shaft;

[0016] a fourth rod, a first end of which is rotatably connected to the second end of the second rod via a fifth hinge shaft;

[0017] a fifth rod, fixedly connected to the door body, wherein a first end of the fifth rod is rotatably connected to the second end of the third rod via a sixth hinge shaft; and a second end of the fifth rod is rotatably connected to the second end of the fourth rod via a seventh hinge shaft;

[0018] Wherein, the mounting seat, the first rod, the second rod, the third rod, the fourth rod and the fifth rod form a six-link mechanism;

[0019] Applying a pulling force to the door body to switch the door body from a closed state to an open state, the fifth rod drives the third rod and the fourth rod, so that the third rod rotates in a first direction relative to the fifth rod, and the fourth rod rotates in the first direction relative to the fifth rod; the third rod drives the first rod and the second rod, so that the first rod rotates in a second direction relative to the mounting seat, and the second rod rotates in the second direction relative to the mounting seat; the fourth rod drives the second rod, so that the second rod rotates in the second direction relative to the mounting seat; wherein the second direction is opposite to the first direction;

[0020] Applying a thrust to the door body to switch the door body from an open state to a closed state, the fifth rod drives the third rod and the fourth rod, so that the third rod rotates relative to the fifth rod in the second direction, and the fourth rod rotates relative to the fifth rod in the second direction; the third rod drives the first rod and the second rod, so that the first rod rotates relative to the mounting seat in the first direction, and the second rod rotates relative to the mounting seat in the first direction; the fourth rod drives the second rod, so that the second rod rotates relative to the mounting seat in the first direction;

[0021] Define the axis center point of the first hinge axis as point A, the axis center point of the second hinge axis as point B, the axis center point of the fifth hinge axis as point N, the axis center point of the sixth hinge axis as point P, and the axis center point of the seventh hinge axis as point Q;

[0022] The mounting base includes a first mounting plate connected to the front wall of the box; the bottom surface of the first mounting plate in contact with the front wall of the box is the mounting surface, and the end surface of the side of the mounting base parallel to the side wall of the box is defined as the side end surface of the mounting base;

[0023] A first angle θ between a line connecting the axis of the first hinge shaft and the axis of the second hinge shaft and a side end surface of the mounting base is greater than or equal to 25°, and when a line PQ connecting the point P and the point Q is parallel to the mounting surface, the following conditions are satisfied: 0.97<((AB*cosθ) 2 +(AB*sinθ+BN) 2 ) / (AP+PN) 2 <1.03, where AB is the distance between points A and B, BN is the distance between points B and N, AP is the distance between points A and P, and PN is the distance between points P and N.

[0024] With this arrangement, the door opening angle is increased, thereby increasing the first angle θ. This allows the door body to move sufficiently forward and outward relative to the box body when the door body is opened to a larger angle, so that it satisfies the relationship: 0.97<((AB*cosθ)2+(AB*sinθ+BN)2) / (AP+PN)2<1.03. While ensuring that the hinge thickness remains basically unchanged or increases slightly, the total length of BM and PM can also be increased, so that point M moves a certain distance inward and downward, and, for the purpose of the connecting rod quadrilateral assembly, point N also needs to move a certain distance inward. At the same time, it can also take into account the technical purpose of having a relatively small BM / PM value, that is, n, which is more conducive to the miniaturization of the hinge assembly. Thus, when the door is closed, the line connecting points P and Q is approximately parallel to the plane of the box opening. To minimize the lever arm of the hinge assembly supporting the door, the hinge assembly needs to be sufficiently retracted inward, thereby reducing the moment of the door sinking under gravity and the moment of the door twisting under gravity. Furthermore, the line BN is parallel to the line PQ as much as possible, and APN is aligned as much as possible so that point P is on the edge of the triangle ABN, so that point P is located near the edge of the triangle structure formed by the fixed support points A and B and the farthest support point used to support the door, thereby minimizing the lever arm between point P and the equivalent support point in the triangle structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the implementation methods in the embodiments of the present disclosure or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 A schematic structural diagram of a refrigerator in some embodiments of the present disclosure;

[0027] Figure 2 Schematic diagram of the structure of refrigerators in other embodiments of the present disclosure;

[0028] Figure 3 Schematic diagram of the structure of refrigerators in other embodiments of the present disclosure;

[0029] Figure 4 for Figure 3 A partial top view of the refrigerator;

[0030] Figure 5 for Figure 4 A partial enlarged schematic diagram of point D in the middle;

[0031] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure of the middle hinge assembly;

[0032] Figure 7 Schematic diagram of a refrigerator door opened to 50° in some embodiments of the present disclosure;

[0033] Figure 8 Schematic diagram of a refrigerator door opened to 115 degrees in some embodiments of the present disclosure;

[0034] Figure 9 is a schematic diagram of a refrigerator door opened to a maximum door opening angle in some embodiments of the present disclosure;

[0035] Figure 10 This is a schematic diagram of a refrigerator door opened to a maximum opening angle in the related art;

[0036] Figure 11 Schematic diagram of a refrigerator door opened to 60 degrees in some embodiments of the present disclosure;

[0037] Figure 12 for Figure 11 Schematic diagram of the middle hinge assembly;

[0038] Figure 13 is a schematic diagram of a refrigerator door closed in some embodiments of the present disclosure;

[0039] Figure 14 for Figure 13 Schematic diagram of the middle hinge assembly and the motion trajectory of EP;

[0040] Figure 15 This is a schematic diagram of a refrigerator door closed in the related art;

[0041] Figure 16 for Figure 15 Schematic diagram of the middle hinge assembly;

[0042] Figure 17 for Figure 9 Schematic diagram of the middle hinge assembly;

[0043] Figure 18 Schematic diagram of the changing trend of EP during the process of opening the door in some embodiments of the present disclosure;

[0044] Figure 19 Schematic diagram of the changing trend of EP during the process of opening the door in other embodiments of the present disclosure;

[0045] Figure 20 Schematic diagram of the changing trend of EP during the process of opening the door in other embodiments of the present disclosure;

[0046] Figure 21 Schematic diagram of the changing trend of EP during the process of opening the door in other embodiments of the present disclosure;

[0047] Figure 22 Schematic diagram of the changing trend of EP during the process of opening the door in other embodiments of the present disclosure;

[0048] Figure 23 for Figure 13 Schematic diagram of the hinge assembly and the motion trajectory of the FP;

[0049] Figure 24 Schematic diagram of the changing trend of FP during the process of opening the door in some embodiments of the present disclosure;

[0050] Figure 25 Schematic diagram of FP change trend during the process of opening the door in other embodiments of the present disclosure;

[0051] Figure 26 Schematic diagram of FP change trend during the process of opening the door in other embodiments of the present disclosure;

[0052] Figure 27 Schematic diagram of FP change trend during the process of opening the door in other embodiments of the present disclosure;

[0053] Figure 28 Schematic diagram of FP change trend during the process of opening the door in other embodiments of the present disclosure;

[0054] Figure 29 A schematic diagram of a hinge assembly when the door is closed in some embodiments of the present disclosure;

[0055] Figure 30 Schematic diagram of the hinge assembly when the door is closed in some other embodiments of the present disclosure;

[0056] Figure 31 A schematic diagram of a hinge assembly when a door is closed in the related art;

[0057] Figure 32 Schematic diagram of the hinge assembly when the door is closed in some other embodiments of the present disclosure;

[0058] Figure 33 Schematic diagram of the hinge assembly when the door is closed in some other embodiments of the present disclosure;

[0059] Figure 34 Schematic diagram of the hinge assembly when the door is closed in some other embodiments of the present disclosure;

[0060] Figure 35 Schematic diagram of the hinge assembly when the door is closed in some other embodiments of the present disclosure;

[0061] Figure 36 Schematic diagram of the hinge assembly when the door is closed in some other embodiments of the present disclosure;

[0062] Figure 37This is a schematic diagram of a refrigerator in some embodiments of the present disclosure when the door is opened to 110 degrees;

[0063] Figure 38 for Figure 37 Schematic diagram of the middle hinge assembly;

[0064] Figure 39 Schematic diagram of the motion trajectory of point L and main trajectory point P in some embodiments of the present disclosure;

[0065] Figure 40 is a schematic diagram of a hinge assembly in some embodiments of the present disclosure;

[0066] Reference numerals:

[0067] 100-cabinet;

[0068] 110-box front wall; 120-box rear wall; 130-box side wall;

[0069] 200-door body;

[0070] 210 - Door front wall; 220 - Door rear wall; 230 - First door side wall; 240 - Second door side wall; 250 - Door top wall; 251 - Mounting slot; 252 - First opening; 253 - Second opening; 254 - First slot side wall;

[0071] 300-hinge assembly;

[0072] 310 - mounting base; 311 - first mounting plate; 312 - second mounting plate; 320 - first rod; 330 - second rod; 340 - third rod; 350 - fourth rod; 360 - fifth rod; 371 - first hinge axis; 372 - second hinge axis; 373 - third hinge axis; 374 - fourth hinge axis; 375 - fifth hinge axis; 376 - sixth hinge axis; 377 - seventh hinge axis;

[0073] 400-cabinet;

[0074] 410 - storage room; 411 - storage side wall; 420 - cabinet front wall. DETAILED DESCRIPTION

[0075] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0076] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0077] Hereinafter, the terms "first," "second," and similar terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, features defined with terms such as "first," "second," and similar terms may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0078] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0079] “At least one of A, B and C” has the same meaning as “at least one of A, B or C” and both include the following combinations of A, B and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C.

[0080] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0081] The use of "for" or "configured to" herein is intended to be open and inclusive language that does not exclude devices being for or configured to perform additional tasks or steps.

[0082] As used herein, “about,” “substantially,” or “approximately” includes the stated value and an average value that is within an acceptable range of deviation from the particular value, where the acceptable range of deviation is determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0083] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximately parallelism, wherein the acceptable deviation range of approximately parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximately perpendicularity, wherein the acceptable deviation range of approximately perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximately equality, wherein the acceptable deviation range of approximately equality can be, for example, the difference between the two being equal is less than or equal to 2% of either one. "Unchanged" includes absolute equality and approximately equality, wherein the acceptable deviation range of approximately equality can be, for example, the difference between the two being equal is less than or equal to 2% of either one.

[0084] In the description of the present disclosure, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0085] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the accompanying drawings, a side of the refrigerator facing a user when in use is defined as a front side, and a side opposite thereto is defined as a rear side.

[0086] refer to Figure 1 、 Figure 2 and Figure 3 The refrigerator of the embodiment of the present disclosure may include a cabinet 100 having a storage chamber, a door 200 connected to the cabinet 100 to open and close the storage chamber, and a refrigeration device that provides coldness to the storage chamber.

[0087] For example, the refrigerator body 100 may include an inner liner, an outer shell, and a first insulation layer. The inner liner forms a storage compartment. The storage compartment is used to store food and other items. The storage compartment may be provided with an access opening through which a user can place items in or remove items from the storage compartment. The outer shell may be connected to the outside of the inner liner to form the appearance of a refrigerator. The first insulation layer may be filled between the inner liner and the outer shell to block heat transfer between the storage compartment and the space outside the refrigerator body 100.

[0088] In some embodiments of the present disclosure, the box 100 may be configured with multiple storage chambers. The multiple storage chambers may include a refrigerator and a freezer. The internal temperature of the refrigerator can be maintained between approximately 0°C and 5°C, storing items in a refrigerated mode. The internal temperature of the freezer can be maintained between approximately -30°C and 0°C, storing items in a frozen mode. In addition, the multiple storage chambers may also include other chambers, such as a vacuum chamber, a temperature-changing chamber, etc., which will not be described in detail in the embodiments of the present disclosure.

[0089] In some embodiments of the present disclosure, the refrigerator and freezer compartments may be arranged along the height of the refrigerator. For example, the refrigerator compartment may be located above the freezer compartment. In other embodiments of the present disclosure, the refrigerator and freezer compartments may be arranged in other ways, for example, along the width of the refrigerator.

[0090] For example, the door 200 may include a door casing, a door liner, and a second insulation layer. When the door 200 is closed, the door liner faces the storage compartment. The door casing may be connected to the side of the door liner facing away from the storage compartment to create the appearance of a refrigerator. The second insulation layer may be interposed between the door casing and the door liner to prevent heat transfer between the storage compartment and the space outside the door 200 when the door 200 is closed.

[0091] The door 200 can be connected to the housing 100 via a hinge assembly 300. For example, the storage compartment access opening can be formed on the front side of the housing 100. The door 200 can be connected to the front side of the housing 100 via the hinge assembly 300, allowing the door 200 to rotate relative to the housing 100, thereby opening or closing the storage compartment access opening. When the door 200 is opened, the user can insert or remove items through the access opening. When the door 200 is closed, items can be placed in the storage compartment for low-temperature storage.

[0092] The number of doors 200 can be set corresponding to the number of storage rooms. Figure 1 As shown, the box body can be constructed with two storage chambers, and the two storage chambers can be arranged along the width direction of the refrigerator. Each storage chamber can be provided with a corresponding door body 200. For example Figure 2As shown, the cabinet can be constructed with two storage compartments, which can be arranged along the height direction of the refrigerator. Each storage compartment can be provided with two doors 200, which are connected to the cabinet 100 through hinge assemblies 300. The two doors 200 can rotate in opposite directions relative to the cabinet 100 to open or close the storage compartment. Figure 3 As shown, the cabinet can be configured with two storage compartments, which can be arranged in the height direction of the refrigerator. The storage compartment located above the refrigerator can be provided with two doors 200, which are connected to the cabinet 100 via hinge assemblies 300. The two doors 200 can rotate in opposite directions relative to the cabinet 100 to open or close the storage compartment located above.

[0093] The same door body 200 can be connected to the refrigerator through one hinge assembly 300. Alternatively, the same door body 200 can also be connected to the refrigerator through multiple hinge assemblies 300. Taking the example of the same door body 200 being connected to the box body 100 through two hinge assemblies 300, the hinge assembly 300 can be set at the top of the door body 200, for example Figures 1 to 3 The hinge assembly 300 can also be arranged at the bottom of the door body 200, for example Figures 1 to 3 Within the area b shown.

[0094] Below is Figure 3 The refrigerator shown in the example, and combined Figure 4 and Figure 5 , the embodiments of the present disclosure are described in detail. Figure 4 For the general Figure 3 A partial top view of the refrigerator when placed in the cabinet 400, Figure 4 The refrigerator area shown in Figure 3 Region C shown in FIG. Figure 5 for Figure 4 A local enlarged schematic diagram of point D in the middle.

[0095] refer to Figure 3 、 Figure 4 and Figure 5The cabinet 400 may be provided with a storage chamber 410. The storage chamber 410 has two storage side walls 411 arranged opposite to each other. The cabinet 400 has a cabinet front wall 420 located at the front side. The cabinet front wall 420 intersects with the storage side walls 411 to form a cabinet side edge R. The box body 100 may be accommodated in the storage chamber 410. The box body 100 may include a box front wall 110, a box rear wall 120, and two box side walls 130. The box front wall 110 may be located at the front side of the refrigerator and may be formed with an access opening. For example, the box front wall 110 may be a side wall of the box shell located at the front side of the refrigerator. This side wall may be connected to the side wall of the box liner adjacent to the access opening. The box rear wall 120 may be located at the rear side of the refrigerator and arranged opposite to the box front wall 110. The two box side walls 130 may be arranged opposite to each other and both connected to the box front wall 110 and the box rear wall 120. The distance between the box side wall 130 and the receiving side wall 411 may be within 5 mm. The hinge assembly 300 may be connected to the box front wall 110 and close to the box side wall 130 .

[0096] The door body 200 may include a front wall 210, a rear wall 220, two side walls, a top wall 250, and a bottom wall. When the door body 200 is closed, the front wall 210 and the rear wall 220 are parallel to the front wall 110, and the front wall 210 is farther away from the box body 100 than the rear wall 220. The two side walls are arranged opposite each other and are connected to the front wall 210 and the rear wall 220. The top wall 250 is located above the front wall 210, the rear wall 220, and the two side walls, and is connected to the front wall 210, the rear wall 220, and the two side walls. The bottom wall is located below the front wall 210, the rear wall 220, and the two side walls, and is connected to the front wall 210, the rear wall 220, and the two side walls. The sidewall of the two door sidewalls close to the hinge assembly 300, that is, the sidewall close to the cabinet 400 is the first door sidewall 230, and the other door sidewall is the second door sidewall 240. The hinge assembly 300 can be connected to the door top wall 250 and is close to the first door sidewall 230.

[0097] The front wall 210 and the first side wall 230 of the door body 200 intersect to form a first side edge J, and the first side wall 230 and the rear wall 220 intersect to form a second side edge K. When the door body 200 is closed, the first side edge J is located on the side of the second side edge K away from the box body 100.

[0098] It should be noted that when both the door front wall 210 and the first door side wall 230 are flat wall surfaces, the intersection line of the plane of the door front wall 210 and the plane of the first door side wall 230 is theoretically the first side edge J. A transition fillet is provided at the intersection of the door front wall 210 and the first door side wall 230, forming a curved surface extending along the height direction of the door body 200. For ease of description, any straight line on this curved surface extending along the height direction of the door body 200 represents the first side edge J. Similarly, a transition fillet is provided at the intersection of the door rear wall 220 and the first door side wall 230. The second side edge K can be represented by the intersection line of the planes of the door rear wall 220 and the first door side wall 230, or by a straight line located close to and parallel to the intersection line.

[0099] The hinge assembly 300 can be connected to the door top wall 250 or the door bottom wall. For example, the door top wall 250 or the door bottom wall can be provided with a mounting groove 251, and the hinge assembly 300 can be installed in the mounting groove 251. Figure 4 and Figure 5 As shown, taking the mounting groove 251 provided on the door top wall 250 as an example, when the door body 200 is closed, the side of the mounting groove 251 facing the cabinet front wall 110 may be provided with a first opening 252. The side of the mounting groove 251 facing the cabinet 400 may be provided with a second opening 253, and the second opening 253 is connected to the first opening 252. In other words, when the door body 200 is closed, the mounting groove 251 is open on both the side facing the cabinet front wall 110 and the side facing the cabinet 400. During the process of opening or closing the door body 200, the groove wall of the mounting groove 251 is prevented from interfering with the hinge assembly 300 and limiting the range of movement of the door body 200.

[0100] The door rear wall 220 of the door body 200 may be provided with a door seal. When the door body 200 is closed, the door seal may surround the access opening and fit with the front wall 110 of the box body 100, so that the door body 200 and the box body 100 can be sealed and connected, thereby preventing the cold in the storage room from escaping. For example, the door seal may be a ring-shaped rubber strip. Figure 6 、 Figure 7 、 Figure 8 and Figure 9 , the hinge assembly 300 of the embodiment of the present disclosure is described in detail. It should be noted that the opening angle of the door body 200 refers to the following: Figure 7 As shown, the angle α between the door front wall 210 and the box front wall 110 during the process of opening the door body 200 is referred to as the door opening angle α.

[0101] The hinge assembly 300 may include a mounting base 310 , a first rod 320 , a second rod 330 , a third rod 340 , a fourth rod 350 , and a fifth rod 360 .

[0102] The mounting base 310 can be connected to the front wall 110 of the box body 100 .

[0103] The first rod 320 , the second rod 330 , the third rod 340 , the fourth rod 350 , and the fifth rod 360 each have a first end and a second end opposite to each other.

[0104] The first end of the first rod 320 can be rotatably connected to the mounting base 310 via a first hinge shaft 371. The axis of the first hinge shaft 371 is the axis point A, around which the first rod 320 and the mounting base 310 can rotate relative to each other.

[0105] The first end of the second rod 330 can be rotatably connected to the mounting base 310 via a second hinge shaft 372. The axis of the second hinge shaft 372 is axis point B, and the second rod 330 and the mounting base 310 can rotate relative to each other about axis point B. Compared to axis point A, axis point B is closer to the front wall 110 and closer to the center of the storage compartment.

[0106] The third rod 340, for example, its middle portion, can be rotatably connected to the second end of the first rod 320 via a third hinge axis 373. The axis of the third hinge axis 373 is axis point L, and the third rod 340 and the first rod 320 can rotate relative to each other about axis point L. The first end of the third rod 340 can be rotatably connected to the second rod 330, for example, its middle portion, via a fourth hinge axis 374. The axis of the fourth hinge axis 374 is axis point M, and the third rod 340 and the second rod 330 can rotate relative to each other about axis point M.

[0107] The first end of the fourth rod 350 can be rotatably connected to the second end of the second rod 330 via the fifth hinge shaft 375. The axis of the fifth hinge shaft 375 is the axis point N, around which the fourth rod 350 and the second rod 330 can rotate relative to each other.

[0108] The first end of the fifth rod 360 can be rotatably connected to the second end of the third rod 340 via a sixth hinge shaft 376. The axis of the sixth hinge shaft 376 is axis point P, and the fifth rod 360 and the third rod 340 can rotate relative to each other about axis point P. The second end of the fifth rod 360 can be rotatably connected to the second end of the fourth rod 350 via a seventh hinge shaft 377. The axis of the seventh hinge shaft 377 is axis point Q. Axis point Q is farther away from the first door sidewall 230 than axis point P. The fifth rod 360 can be connected to the door top wall 250 of the door body 200. For example, the fifth rod 360 can be installed in the mounting groove 251 of the door top wall 250.

[0109] The axis A of the first hinge axis 371, the axis B of the second hinge axis 372, the axis L of the third hinge axis 373, the axis M of the fourth hinge axis 374, the axis N of the fifth hinge axis 375, the axis P of the sixth hinge axis 376, and the axis Q of the seventh hinge axis 377 are parallel to each other. The mounting base 310, the first rod 320, the second rod 330, the third rod 340, the fourth rod 350, and the fifth rod 360 form a six-bar linkage.

[0110] like Figure 7 and Figure 8 As shown, when a pulling force f is applied to the door body 200, during the process of opening the door body 200 from the closed state, the fifth rod 360 drives the third rod 340 and the fourth rod 350, so that the third rod 340 rotates in the first direction relative to the fifth rod 360, and the fourth rod 350 rotates in the first direction relative to the fifth rod 360. For example, the first direction can be Figure 7 and Figure 8 The third rod 340 drives the first rod 320 and the second rod 330, so that the first rod 320 rotates relative to the mounting base 310 in the second direction, and the second rod 330 rotates relative to the mounting base 310 in the second direction. The fourth rod 350 drives the second rod 330, so that the second rod 330 rotates relative to the mounting base 310 in the second direction. The second direction is opposite to the first direction. For example, the second direction can be Figure 7 and Figure 8 The door opening angle α gradually increases until the hinge assembly 300 is in the unfolded state and the door body 200 is opened to the position shown in FIG. Figure 9 The maximum door opening angle α shown max .

[0111] When a thrust is applied to the door body 200 to close it, the fifth rod 360 drives the third rod 340 and the fourth rod 350, causing the third rod 340 to rotate relative to the fifth rod 360 in the second direction, and the fourth rod 350 to rotate relative to the fifth rod 360 in the second direction. The third rod 340 drives the first rod 320 and the second rod 330, causing the first rod 320 to rotate relative to the mounting base 310 in the first direction, and the second rod 330 to rotate relative to the mounting base 310 in the first direction. The fourth rod 350 drives the second rod 330, causing the second rod 330 to rotate relative to the mounting base 310 in the first direction. The door opening angle α gradually decreases until the hinge assembly 300 is in the closed state and the door body 200 is closed.

[0112] It should be noted that the door opening angle α in the present disclosure can be obtained by actually measuring the equivalent door opening angle α. The equivalent door opening angle α can be the angle between the plane of the bottom surface of the mounting base 310 parallel to the refrigerator front wall 110 and the line PQ. In the disclosed embodiment, since the plane of the bottom surface of the mounting base 310 is parallel to the refrigerator front wall 110, and the line PQ is parallel to the door front wall 210, the door opening angle α and the equivalent door opening angle α are substantially equal.

[0113] Some embodiments of the present disclosure can solve any one of the following technical problems:

[0114] 1. When the hinge assembly in the home furnishing field is applied to the refrigerator, the maximum opening angle of the door body 200 is limited to only 90° to 114°, and it cannot be further increased. The refrigerator of the embodiment of the present disclosure can increase the maximum opening angle of the door body 200, so that the door body 200 can move more significantly toward the front and outside of the refrigerator relative to the cabinet 100, thereby reducing or eliminating the obstruction of the door body 200 to the access opening when the door body 200 is opened to the maximum opening angle. In particular, when a drawer is provided in the storage room, interference between the drawer and the door body 200 can be prevented during the process of pushing and pulling the drawer after the door body 200 is opened.

[0115] 2. When the hinge assembly in the home furnishing field is applied to a refrigerator, when the door body 200 is at the maximum door opening angle, the portion of the door body 200 close to its second side edge K will block the access opening of the storage chamber, causing inconvenience in taking and placing items. In the refrigerator of the disclosed embodiment, during the process of opening the door body 200, the door body 200 can move to a greater extent toward the front and outside of the refrigerator relative to the cabinet 100. When the door body 200 is at the maximum door opening angle, the obstruction of the access opening by the portion of the door body 200 close to the second side edge K can be reduced or eliminated, so as to facilitate the user to take and place items. In particular, when a drawer is provided in the storage chamber, interference between the drawer and the door body 200 can be prevented during the process of pushing and pulling the drawer after the door body 200 is opened.

[0116] 3. When the hinge assembly used in the home appliance field is applied to a refrigerator, in the initial stage of opening the door body 200, that is, when the opening angle of the door body 200 is relatively small, the door body 200 moves relatively little relative to the cabinet 100 toward the front and inside of the refrigerator, resulting in a relatively small safety distance between the first side edge J of the door body 200 and the cabinet 400 to avoid collision. In the refrigerator of the disclosed embodiment, in the initial stage of opening the door, the door body 200 can move relatively much more relative to the cabinet 100 toward the front and inside of the refrigerator, thereby increasing the safety distance to prevent collision between the first side edge J of the door body 200 and the cabinet 400.

[0117] Among them, any one of the technical disclosures in the present disclosure can solve one or more of the above-mentioned technical problems and achieve certain invention purposes to a certain extent; multiple technical disclosures can also be combined into an overall solution to solve one or more of the above-mentioned technical problems and achieve certain invention purposes; some of the technical disclosures can also be selected to be combined into an overall solution, while adopting existing technologies and inferior solutions, but the inferior trend can be compensated by the means disclosed in this technology, and the above-mentioned one or more technical problems can be solved to a certain extent as a whole and certain invention purposes can be achieved; each technical disclosure is combined into a complete technical solution, which constitutes an organic and inseparable overall solution, which solves technical problems as a whole and achieves certain invention purposes.

[0118] Any technical disclosure in this disclosure, as well as the recombination of multiple technical disclosures, can form a complete technical solution, and can solve one or more of the above-mentioned technical problems and achieve the purpose of the invention. They all belong to the content of this disclosure and are the content that is directly and unambiguously determined based on the content of this disclosure.

[0119] The hinge assembly 300 in the embodiment of the present disclosure can increase the maximum opening angle α of the door body 200. max .For example Figure 9 As shown, in the embodiment of the present disclosure, the maximum opening angle α of the door body 200 is max Theoretically, it can reach 129°~144°. Figure 10 In the related art, the maximum opening angle α of the door body 200 is max Compared with the related art, the refrigerator of the embodiment of the present disclosure can increase the maximum opening angle α of the door body 200 during the process of opening the door body. max , the door body 200 can move to a greater extent toward the front and outside of the refrigerator relative to the box body 100, thereby preventing the door body 200 from blocking the access opening of the storage chamber.

[0120] In some embodiments of the present disclosure, Figure 6 As shown, the mounting base 310 may include a first mounting plate 311 and two second mounting plates 312. The first mounting plate 311 may be parallel to the box front wall 110 and connected to the box front wall 110. For example, the first mounting plate 311 may be connected to the box front wall 110 by connecting bolts, rivets, etc.

[0121] The two second mounting plates 312 can be perpendicular to the first mounting plate 311 and respectively connected to the opposite sides of the first mounting plate 311. Such a setting can improve the structural strength of the mounting base 310, thereby improving the structural strength of the hinge assembly 300, so that the hinge assembly 300 can support a heavier door body 200.

[0122] In addition, the two second mounting plates 312 and the first mounting plate 311 can also be enclosed to form a accommodating space. When the hinge assembly 300 is in a closed state, the accommodating space can accommodate at least part of the hinge assembly 300 to protect the hinge assembly 300, thereby preventing the various rods from interfering with other components in the refrigerator.

[0123] The first hinge shaft 371 and the second hinge shaft 372 can be connected to the two second mounting plates 312. For example, the two second mounting plates 312 can be provided with a first connection hole and a second connection hole, the second connection hole being closer to the first mounting plate 311 and closer to the center of the storage chamber than the first connection hole.

[0124] Both ends of the first hinge shaft 371 are respectively inserted into the first connection holes of the two second mounting plates 312 .

[0125] Both ends of the second hinge shaft 372 are respectively inserted into the second connection holes of the two second mounting plates 312 .

[0126] The two mounting plates can support both ends of the first hinge shaft 371 and the second hinge shaft 372 , thereby improving the stability of the rotation of the first hinge shaft 371 and the second hinge shaft 372 , thereby improving the movement stability of the hinge assembly 300 and the door body 200 .

[0127] The following takes the case where the door body 200 is opened to 60° as an example to further describe the technical solution of the embodiment of the present disclosure.

[0128] refer to Figure 11 and Figure 12 , Figure 11 This is a schematic diagram of the door 200 of the refrigerator in the embodiment of the present disclosure when it is opened to 60°. Figure 12 for Figure 11 Schematic diagram of the middle hinge assembly 300.

[0129] It should be noted that, in Figure 12 In the schematic diagram of the hinge assembly 300 shown, the axis of each hinge axis is represented as a point. To facilitate the description of the embodiments of the present disclosure in conjunction with the drawings, the hinge axis and its axis point may be represented by a point corresponding to the axis of each hinge axis.

[0130] For example, point A can be used to represent the first hinge axis 371 and its axis point A, point B can be used to represent the second hinge axis 372 and its axis point B, point L can be used to represent the third hinge axis 373 and its axis point L, point M can be used to represent the fourth hinge axis 374 and its axis point M, point N can be used to represent the fifth hinge axis 375 and its axis point N, point P can be used to represent the sixth hinge axis 376 and its axis point P, and point Q can be used to represent the seventh hinge axis 377 and its axis point Q.

[0131] like Figure 12As shown, AB, AL, BMN, PLM, NQ and PQ form a six-bar linkage.

[0132] Among them, PQ is fixedly connected to the door body 200, and point P and point Q are fixed relative to the door body 200. The motion trajectories of point P and point Q can be used to represent the motion trajectory of the door body 200, with point P as the main trajectory point and point Q as the auxiliary trajectory point.

[0133] The motion trajectory of the main trajectory point P and the auxiliary trajectory point Q is composed of a quadrilateral ABQP.

[0134] The lengths of AB and PQ are fixed values. During the process of opening the door body 200, the lengths of AP and BQ are variable values, and the lengths of AP and BQ increase with the increase of the door opening angle α. The length change rate of AP is different from the length change rate of BQ.

[0135] In the process from closing the door body 200 to opening the door body 200, the door body 200 can first move toward the front and inner side of the refrigerator, and then move toward the front and outer side of the refrigerator, thereby preventing the door body 200 from interfering with the cabinet 400.

[0136] In other words, quadrilateral ABQP includes ΔABP and ΔBPQ.

[0137] ΔABP determines the motion trajectory of the main trajectory point P. In ΔABP, AP and BP increase as the opening angle α of the door body 200 increases.

[0138] ΔBPQ constitutes the motion trajectory of the auxiliary trajectory point Q. In ΔBPQ, BP and BQ increase as the opening angle α of the door body 200 increases.

[0139] Generally speaking, the motion trajectory of the main trajectory point P and the auxiliary trajectory point Q consists of six circular motions, thereby forming the motion trajectory of the door body 200 .

[0140] Specifically, during the opening process of door 200, point A is a fixed point. The motion trajectory of point L is a portion of the first circle C1, which has point A as its center and AL as its radius. The motion trajectory of main trajectory point P is a portion of the second circle C2, which has point L as its center and PL as its radius. Point L always moves on first circle C1, forming a dynamic center L.

[0141] In ΔPLA, according to the law of cosines, the length of AP satisfies the following formula:

[0142] AP 2 =AL 2 +PL 2 -2·AL·PL·cosω1; (1)

[0143] Wherein, ω1 is ∠ALP, which increases during the process of opening the door body 200. It can be less than 180°, so that AP increases as the opening angle α of the door body 200 increases.

[0144] During the opening process of door 200, point B is a fixed point. The motion trajectory of point M is a portion of the third circle C3, which has point B as its center and BM as its radius. The motion trajectory of main trajectory point P is a portion of the fourth circle C4, which has point M as its center and PM as its radius. Point M always moves on the third circle C3, forming a dynamic center M.

[0145] In ΔPBM, according to the cosine theorem formula, the length of BP satisfies the following formula:

[0146] BP 2 =BM 2 +PM 2 -2·BM·PM·cosω2; (2)

[0147] Wherein, ω2 is ∠BMP, which increases continuously during the process of opening the door body 200. It can be less than 180°. Therefore, when it is less than 180°, BP increases as the opening angle α of the door body 200 increases.

[0148] During the opening process of door 200, point B is a fixed point. Point N's trajectory forms a portion of the fifth circle C5, centered at point B and with radius BN. Auxiliary point Q's trajectory forms a portion of the sixth circle C6, centered at point N and with radius QN. Point N consistently moves along the fifth circle C5, forming a dynamic center N.

[0149] In ΔQBN, according to the cosine theorem, the length of BQ satisfies the following formula:

[0150] BQ 2 =BN 2 +QN 2 -2·BN·QN·cosω3; (3)

[0151] Wherein, ω3 is ∠BNQ, which increases continuously during the process of opening the door body 200. It can be less than 180°. Therefore, when it is less than 180°, BQ increases as the opening angle α of the door body 200 increases.

[0152] For refrigerators with hinge assemblies for home use in related art, as the door opening angle α of the door body 200 increases, ω3 increases and may exceed 180°. Before ω3 exceeds 180°, BQ gradually increases with increasing door opening angle α. After ω3 exceeds 180°, BQ gradually decreases with increasing door opening angle α.

[0153] In the embodiments of the present disclosure, reference Figure 13 , the distance H1 between the axis point A of the first hinge axis 371 and the front wall 110 of the box can be greater than or equal to 36 mm.

[0154] When the hinge assembly 300 is in the closed state, the axis point A of the first hinge axis 371 is the axis point farthest from the front wall 110 among the axis points of the hinge assembly 300. The distance between the axis point A and the front wall 110 directly affects the thickness H of the hinge assembly 300. The thickness H of the hinge assembly 300 refers to the width of the hinge assembly 300 in a direction perpendicular to the front wall 110 when the hinge assembly 300 is in the closed state.

[0155] For example Figure 13 As shown, when the door 200 is closed, the hinge assembly 300 is in a closed state. The direction perpendicular to the front wall 110 is direction y. The width H of the hinge assembly 300 in direction y is the thickness H of the hinge assembly 300, hereinafter referred to as the thickness H of the hinge assembly.

[0156] Setting the distance H1 to be greater than or equal to 36 mm allows the hinge assembly 300 to have a sufficiently large thickness H, which is beneficial to increasing the volume of each rod in the hinge assembly 300, thereby increasing the length of each rod, and further facilitating the adjustment of the motion trajectory of the main trajectory point P and the auxiliary trajectory line Q, thereby reducing the maximum door opening angle α required to increase the door body 200. max It is helpful to increase the cross-sectional area of ​​each rod, thereby increasing the structural strength of the hinge assembly 300, so that the hinge assembly 300 can be adapted to the door body 200 with a larger thickness, thereby increasing the applicable scope of the hinge assembly 300.

[0157] If the distance H1 is less than 36 mm, the distance H1 is too small, which will result in a smaller thickness H of the hinge assembly 300, limit the volume of each rod in the hinge assembly 300, and be unfavorable to increase the length of each rod, thereby being unfavorable to adjust the motion trajectory of the main trajectory point P and the auxiliary trajectory line Q. In order to increase the maximum opening angle α of the door body 200, max This increases the difficulty and is not conducive to increasing the cross-sectional area of ​​each rod, thereby not being conducive to increasing the structural strength of the hinge assembly 300 , making the hinge assembly 300 unable to adapt to a door body 200 with a larger thickness, thereby reducing the applicable scope of the hinge assembly 300 .

[0158] In some embodiments of the present disclosure, the distance H1 can be less than or equal to 45 mm. This configuration prevents the thickness H of the hinge assembly 300 from being too large, thereby preventing the width of the mounting groove 251 on the door top wall 250 in the direction y from being too large. This ensures that there is a sufficient distance between the first groove sidewall 254 of the mounting groove 251 opposite the first opening 252 and the door front wall 210. This ensures that the second thermal insulation layer filled between the first groove sidewall 254 and the door front wall 210 is not too thin, thereby ensuring the thermal insulation performance of the door body 200.

[0159] If the distance H1 is greater than 45 mm, the distance H1 is too large, which will cause the thickness H of the hinge assembly 300 to be too large, thereby increasing the width of the installation groove 251 on the door top wall 250, thereby reducing the distance between the groove side wall of the installation groove 251 and the door front wall 210, making the second insulation layer filled between the groove side wall of the installation groove 251 and the door front wall 210 too thin, thereby reducing the thermal insulation performance of the door body 200.

[0160] In some embodiments of the present disclosure, the distance H2 between the axis point B of the second hinge axis 372 and the refrigerator front wall 110 can be greater than or equal to 15 mm. This configuration ensures a sufficient distance between the second hinge axis 372 and the refrigerator front wall 110, which helps increase the range of movement of the door 200 relative to the refrigerator body 100 toward the outside of the refrigerator during the process of opening the door 200, thereby helping to prevent the door 200 from colliding with the cabinet 400.

[0161] If the distance H2 is less than 15 mm, the distance H2 is too small, which will result in a limited distance between the second hinge shaft 372 and the front wall 110 of the box. In the process of opening the door body 200, it is not conducive to increasing the movement range of the door body 200 relative to the box body 100 toward the outside of the refrigerator, thereby making the door body 200 easy to collide with the cabinet 400.

[0162] In some embodiments of the present disclosure, a distance H2 between the axis point B of the second hinge shaft 372 and the box front wall 110 may be less than or equal to 30 mm.

[0163] The mounting base 310 is connected to the front wall 110 via connecting bolts or rivets. The door body 200 is hinged to the mounting base 310 at the second hinge axis 372 via the fifth rod 360, the fourth rod 350, and the second rod 330. During the opening process of the door body 200, the heavier door body 200 applies a downward load torque to the connecting bolts or rivets via the unfolded fifth rod 360, the fourth rod 350, the second rod 330, and the mounting base 310. The moment arm of the load torque is the sum of the orthographic projection of the horizontal distance between the center of the door body 200 and the axis point B in the direction y and the distance H2 between the axis point B and the front wall 110.

[0164] The larger the distance H2, the longer the lever arm, and the greater the load moment borne by the connecting bolt or rivet. By setting the distance H2 to be less than or equal to 30 mm, the load moment borne by the connecting bolt or rivet can be prevented from being too large, thereby ensuring the reliability of the connection between the mounting base 310 and the box front wall 110.

[0165] If the distance H2 is greater than 30 mm, the distance H2 is too large, which will cause the connecting bolts or rivets to bear too much load torque, making it easy for the mounting base 310 to separate from the box front wall 110, reducing the connection reliability between the hinge assembly 300 and the box body 100.

[0166] like Figure 40 As shown, in the motion trajectory j of the first side edge J, from the time the door 200 is closed to the time it is opened, the first side edge J can first move toward the front and inside of the refrigerator relative to the cabinet 100. Then, when the door 200 is opened to a certain opening angle α, the first side edge J begins to move toward the front and outside of the refrigerator.

[0167] One of the technical problems that needs to be solved in the embodiment of the present disclosure is to avoid the first side edge J from interfering with the cabinet 400 during the process of opening the door body 200, and to always keep a safe distance large enough to avoid collision between the first side edge J and the cabinet 400. Figure 12 As shown, within a certain door opening angle range, it is necessary to ensure that AP and BP have a large length increase. In this way, as the door opening angle α gradually increases, point P can make the refrigerator move first inward and then outward. At the same time, point P can move toward the front of the refrigerator in a relatively large range, so that when the door body 200 is opened at a relatively small door opening angle α, there is a sufficiently large safety distance between the first side edge point J of the door body 200 and the cabinet 400 to avoid collision.

[0168] In some embodiments of the present disclosure, Figure 12As shown, in order to make point P move first inward and then outward toward the refrigerator, and at the same time move significantly toward the front of the refrigerator, it is necessary to make BP have a larger length increase when the door body 200 is opened to a smaller opening angle α. If the door body 200 is opened to a smaller opening angle α, such as within 90 degrees, the key to making BP have a larger length increase is BM / PM=n, or the rate of increase of ω2 during the process of the door body 200 opening the smaller opening angle α. In other words, if the hinge assembly 300 is to avoid the opening of the cabinet when the door body 200 reaches a larger opening angle, it is necessary to ensure that before the door body reaches a larger angle, such as 90 degrees, point P has a larger increase or a larger speed increase relative to point Q. This ensures that before PQ reaches perpendicular to the door body (i.e., point P and point Q are aligned in the vertical direction), points P and Q can move fully outward, so that the hinge assembly 300 avoids the opening of the cabinet, and at the same time, a larger maximum opening angle can be achieved. In this way, it is necessary to make BP have a sufficiently fast increase relative to BQ during the door opening process.

[0169] In some embodiments of the present disclosure, Figure 37 and Figure 38 As shown, the second ratio n of the distance between the axis point B and the axis point M to the distance between the axis point M and the axis point P, ie BM / PM=n, may be less than 1.0. Figure 39 As shown in FIG. 1 , if the door body 200 is opened at a relatively small opening angle α, the length increase of BP will be relatively large, and it is necessary to ensure that BM / PM=n cannot be too large. If n is too large, the length increase of BP will be relatively small when the door body 200 is opened at a relatively small opening angle α. In other words, Figure 39 The n value represents AL / LP4 or AL / LP5. When AL / LP4 is larger than AL / LP5, when the opening angle ω1 is the same, the AP4 increase H4 is significantly smaller than the AP5 increase. Therefore, it can be understood that the smaller the n value, the greater the AP increase.

[0170] Similarly, in the embodiment of the present disclosure, if Figure 37 and Figure 38 As shown, the second ratio n of the distance between the pivot point B and the pivot point M to the distance between the pivot point M and the pivot point P, i.e., BM / PM=n, can be less than 1.0. Setting n to less than 1.0 helps increase the amount of movement of the main trajectory point P in the horizontal direction x toward the outside and front of the refrigerator, thereby helping to increase the amount of movement of the door body 200 in the horizontal direction x toward the outside and front of the refrigerator during the process of opening the door body 200, thereby preventing the door body 200 from colliding with the cabinet 400.

[0171] If the second ratio n is greater than or equal to 1.0, the second ratio n is too large, which is not conducive to increasing the movement of the main trajectory point P in the horizontal direction x and the vertical direction y toward the outside and front of the refrigerator when the door body 200 is opened to a small angle range, thereby increasing the movement of the door body 200 in the horizontal direction x toward the outside of the refrigerator during the process of opening the door body 200, and increasing the risk of collision between the door body 200 and the cabinet 400.

[0172] In some embodiments of the present disclosure, n may be greater than or equal to 0.85. Preferably, n may be greater than or equal to 0.9.

[0173] To further reduce n, you need to shorten the BM or increase the PM. If n is less than 0.85 or 0.9, n is too small, resulting in a too short BM or too long PM.

[0174] If BM is too short, the sum of BM and PM will be reduced. Figure 39 It can be seen that when the opening angle α of the door body 200 is large, the movement of the main trajectory point P relative to the box body 100 toward the outside of the refrigerator will be reduced, which is not conducive to increasing the movement of the door body 200 relative to the box body 100 toward the outside of the refrigerator during the process of opening the door body 200.

[0175] If PM is too long, the axis point M will be close to the refrigerator front wall 110 when the door 200 is closed, resulting in an excessively large thickness H of the hinge assembly 300, which is not conducive to the miniaturization of the hinge assembly 300. Therefore, setting the value of n to be greater than or equal to 0.85, or greater than or equal to 0.9, is beneficial in increasing the amount of movement of the door 200 relative to the refrigerator body 100 toward the outside of the refrigerator during the opening process of the door 200, and is also conducive to the miniaturization of the hinge assembly 300.

[0176] In some examples of the present disclosure, reference is made to Figure 13 and Figure 14 , and a first angle θ between the line connecting the axis points A and B and the box sidewall 130. From at least some technical perspectives, it can be understood that while ensuring that the hinge thickness remains essentially unchanged or increases slightly, the position of point P should remain essentially unchanged when the hinge is closed. Thus, by rotating AB counterclockwise by a certain angle, that is, by moving point B upward and inward by a certain distance, the first angle θ is increased. In other words, this can achieve the goal of relatively reducing the BM / PM ratio, i.e., the value of n, while ensuring that the hinge thickness remains essentially unchanged or increases slightly.

[0177] In some examples of the present disclosure, Figure 13 and 14 The first angle θ shown in can be greater than the first angle, and the first angle can be any value between 25° and 30°. For example, the first angle can be 25°, 26°, 27°, 28°, 29°, or 30°.

[0178] That is, the first angle θ may be greater than 25°. Alternatively, the first angle θ may be greater than 26°; the first angle θ may be greater than 27°; the first angle θ may be greater than 28°; the first angle θ may be greater than 29°; or the first angle θ may be greater than 30°.

[0179] In the related art, reference Figure 15 and Figure 16 The hinge assembly 300 is usually used in storage cabinets in the home field. The angle between the line between the axis point A and the axis point B and the box side wall 130 is as follows: Figure 16 The first angle θ shown is relatively small, typically 8° to 10°.

[0180] A smaller first angle θ can reduce the width of point A and point B in the horizontal direction parallel to the plane where the take-and-put port is located, that is, Figure 15 and Figure 16 The width H3 of the points A and B in the horizontal direction x is shown to reduce the overall width of the hinge assembly 300 in the horizontal direction x as much as possible, so that when the door body 200 is opened to the maximum opening angle α max When doing so, the access opening of the locker is prevented from being blocked by the hinge assembly 300 as much as possible, so as to facilitate users to take and put items.

[0181] However, the smaller first angle θ makes the maximum opening angle α of the door body 200 max is limited and cannot be increased further. Figure 16 As shown, the trajectory line p is the trajectory line of the main trajectory point P, and the trajectory line q is the trajectory line of the auxiliary trajectory point Q. The smaller first angle θ is equivalent to making the trajectory line p and the trajectory line q rotate clockwise around the point A, so that the end points P1 and Q1 of the trajectory line p and the trajectory line q move toward the center of the locker, thereby reducing the maximum opening angle α of the door body 200 max In the related art, the maximum door opening angle α max Usually it is 114°. However, in the field of home, the size of the storage cabinet is usually large, and the thickness of the door body 200 is relatively thin. Even if the maximum door opening angle α max It is only 114°, which will not affect the user's taking and placing of items and can still meet the user's usage requirements.

[0182] However, for refrigerators in the field of home appliances, the storage space in the box body 100 is limited, and the thickness of the door body 200 is relatively large, usually 50mm to 60mm. When the door body 200 is opened, if the maximum opening angle α of the door body 200 is max The door body 200 is relatively small and thick, which will block the access opening, making it inconvenient for users to take and place items, and making it inconvenient for users to observe the items in the storage room.

[0183] In some embodiments of the refrigerator disclosed herein, the first angle θ is increased by setting the first angle θ to be greater than the first angle. Figure 14 As shown, increasing the first angle θ is equivalent to making the trajectory line p of the main trajectory point P and the trajectory line q of the auxiliary trajectory point Q rotate counterclockwise around point A, so that the end points P1 and Q1 of the trajectory line p and the trajectory line q move to the outside of the refrigerator, thereby increasing the maximum opening angle α of the door body 200 max , which is beneficial to reducing or eliminating the obstruction of the door body 200 to the access opening when the door body 200 is opened, making it easier for users to take and place items, and easier for users to observe the status of items in the storage room.

[0184] In addition, reference Figure 17 , Figure 17 The door body 200 is opened to the maximum opening angle α in the embodiment of the present disclosure. max Schematic diagram of the hinge assembly 300.

[0185] When the door 200 is opened to the maximum angle α max When the door 200 is opened to the maximum opening angle α, the four sides AB, BP, AQ and PQ of the quadrilateral ABQP are almost on the same straight line. max When , the angle between PQ and the box side wall 130 is close to the first angle θ between AB and the box side wall 130. The larger the first angle θ between AB and the box side wall 130, the larger the angle between PQ and the box side wall 130, and the larger the angle between PQ and the box front wall 110, that is, the maximum opening angle α of the door body 200 max In other words, the first angle θ between AB and the box side wall 130 and the maximum opening angle α of the door body 200 max There is a positive correlation.

[0186] After a lot of experimental simulations and research, the inventor found that the theoretically designed maximum door opening angle α max , so that the door body 200 needs to be opened to at least 129 degrees before the door body 200 can be opened to the maximum opening angle α max When the door body 200 is opened, the portion close to the second side edge K thereof will not substantially block the loading and unloading opening.

[0187] It should be noted that the theoretically designed maximum door opening angle α max This refers to the comparison between the present disclosure and the prior art from a theoretical design perspective, considering that each rod and hinge axis is a theoretical line and point.

[0188] In the actual design of the embodiment of the present disclosure, it is necessary to consider the design avoidance of the width of the rod and the diameter of the hinge shaft to reserve space for the rod and the hinge shaft to avoid interference between the hinge point and the rod. Therefore, the maximum door opening angle α in the actual product design ismax Will be smaller than the theoretically designed maximum door opening angle α max .

[0189] For example, when the first angle θ is set to be greater than the first angle, and the first angle is greater than or equal to 25°, the first angle θ can be increased by at least 15°, and the maximum door opening angle α can be increased to max Increase by more than 15°, that is to say, theoretically the maximum door opening angle α max Increased from 114° to about 129°, thus meeting the requirements of the maximum door opening angle.

[0190] For another example, when the first angle θ is set to be greater than the first angle, and the first angle is greater than or equal to 27°, the first angle θ can be increased by at least 17°, and the maximum door opening angle α can be increased. max Increase by more than 17°, that is to say, theoretically the maximum door opening angle α max It increases from 114° to about 131°, thus better meeting the requirements of the maximum door opening angle.

[0191] For another example, when the first angle θ is set to be greater than the first angle, and the first angle is greater than or equal to 30°, the first angle θ can be increased by at least 20°, and the maximum door opening angle α can be increased. max Increase by more than 20°, that is to say, theoretically the maximum door opening angle α max Increased from 114° to about 134°, so as to better meet the requirements of the maximum door opening angle.

[0192] If the first angle θ is less than or equal to the first angle, the first angle θ is too small, which will result in the maximum door opening angle α max The increase is small. When the door is opened to the maximum opening angle α max When the door 200 is closed, the portion of the door body 200 close to the second side edge K thereof will still block the access opening, making it inconvenient for the user to take and place items, and making it inconvenient for the user to observe the items in the storage room.

[0193] In some embodiments of the present disclosure, the first angle θ may be smaller than the second angle. The second angle may be any value between 36° and 40°. For example, the second angle may be 36°, 37°, 38°, 39°, or 40°.

[0194] That is, the first angle θ may be less than 36°. Alternatively, the first angle θ may be less than 37°; the first angle θ may be less than 38°; the first angle θ may be less than 39°; or the first angle θ may be less than 40°.

[0195] For another example, if the first angle θ is set to be smaller than the second angle, and the second angle is equal to 36°, the first angle θ can be increased by 26°, and the maximum door opening angle α can be increased by 26°.max Increase by more than 26°, that is to say, theoretically the maximum door opening angle α max It increases from 114° to about 140°, thus meeting the requirement of maximum door opening angle.

[0196] For another example, when the first angle θ is set to be smaller than the second angle and the second angle is equal to 38°, the first angle θ can be increased by at least 28°, and the maximum door opening angle α can be increased by 28°. max Increase by more than 28°, that is to say, theoretically the maximum door opening angle α max It increases from 114° to about 142°, thus meeting the requirement of a larger maximum door opening angle.

[0197] Furthermore, when the first angle θ is set to be smaller than the first angle and the second angle is equal to 40°, the first angle θ can be increased by at least 30°, and the maximum door opening angle α can be increased. max Increase by more than 30°, that is to say, theoretically the maximum door opening angle α max It increases from 114° to about 144°, thus meeting the requirements of a larger maximum door opening angle.

[0198] If the first angle θ exceeds the second angle, the first angle θ is too large. For example, if the first angle θ is 45°, the first angle θ can be increased by 35° to make the maximum door opening angle α max Increase by more than 35°, that is to say, theoretically the maximum door opening angle α max Increased from 113° to about 148°, thus making the maximum door opening angle α max Too large. Maximum door opening angle α max If the angle is too large, in the later stage of the door opening process, that is, when the door body is opened to a large angle, for example, when the door opening angle α is greater than 110°, the door body as a whole will move toward the direction of the box body. max When the first side edge J of the door body 200 is easily collided with the cabinet front wall 420 of the cabinet 400. Figure 13 As shown, it is equivalent to making the first rod 320, the second rod 330, the third rod 340, the fourth rod 350 and the fifth rod 360 of the hinge assembly 300 rotate counterclockwise around the axis point A when the mounting base is fixed, and the counterclockwise rotation angle is large, thereby increasing the width of the hinge assembly 300 in the direction y, that is, increasing the thickness H of the hinge assembly 300, which is not conducive to the overall miniaturization of the hinge assembly 300.

[0199] Therefore, the first angle θ is set to be smaller than the second angle. In the later stage of the door opening process, that is, when the door body is opened to the largest angle and the maximum door opening angle α maxWhen the first side edge J of the door body 200 is spaced from the front wall 420 of the cabinet 400 , a sufficiently large safety distance can be reserved between the first side edge J of the door body 200 and the front wall 420 of the cabinet 400 , thereby preventing the first side edge J of the door body 200 from colliding with the front wall 420 of the cabinet 400 .

[0200] It should be noted that, in specific practical applications, while increasing the first angle θ, it is possible to combine with at least one other technical disclosure in the embodiments of the present disclosure to form a complete technical solution. Through the combined effect of multiple technical means, the obstruction of the access opening by the portion of the door body 200 near its second side edge K can be minimized or eliminated. At the same time, the reliability and stability of the hinge assembly 300 and the refrigerator can also be considered. For example, in order for the hinge assembly 300 to have sufficient structural strength to support the heavier door body 200, each rod or each hinge shaft in the hinge assembly 300 needs to have a larger cross-sectional area or volume. During the process of opening the door body 200, the rods and / or each hinge shaft will contact each other prematurely, resulting in a limiting effect, thereby limiting the opening angle α of the door body 200. Therefore, in specific practical applications, the opening angle α of the door body 200 does not need to be opened to 129°.

[0201] Reference Attachment Figure 13 and Figure 14 , define the axis point A of the first hinge axis 371, the axis point B of the second hinge axis 372, the axis point L of the third hinge axis 373, the axis point M of the fourth hinge axis 374, the axis point N of the fifth hinge axis 375, the axis point P of the sixth hinge axis 376, and the axis point Q of the seventh hinge axis 377.

[0202] Continue as Figure 6 As shown, the mounting base 310 may include a first mounting plate 311 and two second mounting plates 312. The first mounting plate 311 may be parallel to the box front wall 110 and connected to the box front wall 110. The first mounting plate 311 and the box front wall 110 may be connected to the box front wall 110 via connecting bolts, rivets, etc. When the hinge assembly 300 is installed on the box body, the bottom surface of the first mounting plate 311 that contacts the box front wall 110 is defined as the mounting surface, and the end surface of the side portion of the mounting base 310 that is parallel to the box side wall 130 is defined as the side end surface of the mounting base.

[0203] Furthermore, when the hinge assembly 300 is mounted on the box, the angle between the line connecting the axis points A and B and the box sidewall 130 is defined as a first angle θ. In other words, when the hinge assembly 300 is not mounted, the angle between the line connecting the axis points A and B and the side surface of the mounting base is the first angle θ.

[0204] like Figure 13As shown, if AB is rotated counterclockwise by a certain angle, that is, point B moves a certain distance upward and inward, thereby increasing the first angle θ, in order to allow the door body 200 to move forward and outward relative to the box body 100 to a sufficient extent when the door body 200 is opened to a larger angle, the total length of BM and PM needs to be increased. Figure 39 It can be seen that a sufficiently long combined length of BM and PM can help maximize the amount of movement of the door 200 relative to the cabinet 100 toward the front and outside of the refrigerator during the process of opening the door 200. From at least some technical perspectives, it can be understood that while maintaining a substantially constant or slightly increased hinge thickness, moving point M inward and downward by a certain distance can ensure a longer combined length of BM and PM, while also relatively minimizing the BM / PM ratio (n). Furthermore, point N also needs to be moved inward by a certain distance for the connecting rod quadrilateral assembly.

[0205] When the door 200 is closed, that is, the line PQ connecting the axis point P of the sixth hinge axis 376 and the axis point Q of the seventh hinge axis 377 is parallel to the mounting surface of the first mounting plate 311. To ensure that the hinge assembly 300 reliably supports the weight of the door 200 while the door 200 is closed, the moment arm of the hinge assembly 300 used to support the door 200 must be sufficiently reduced so that the hinge assembly 300 can be sufficiently retracted.

[0206] When the door 200 is closed, the following conditions are satisfied: 0.97<((AB*cosθ) 2 +(AB*sinθ+BN) 2 ) / (AP+PN) 2 <1.03. With such a setting, when the door body 200 is closed, the line connecting the door body points P and Q is approximately parallel to the plane of the box opening. In order to make the lever arm of the hinge assembly 300 used to support the door body 200 small enough, the hinge assembly 300 needs to be sufficiently retracted inward, thereby reducing the moment of the door body 200 sinking under gravity, and reducing the moment of the door body twisting under gravity. Furthermore, the connection line BN is parallel to the connection line PQ as much as possible, and APN is on a straight line as much as possible so that the point P is on the edge of the triangle ABN, so that the point P is located near the edge of the triangle structure formed by the fixed support points A and B and the farthest support point used to support the door body 200, thereby making the lever arm between the point P and the equivalent support point in the triangle structure small enough. Therefore, in order to increase the door opening angle, the first angle θ is increased, and when the door body 200 is closed, it satisfies: 0.97<((AB*cosθ) 2 +(AB*sinθ+BN) 2 ) / (AP+PN) 2 <1.03.

[0207] Where AB is the distance between point A and point B, BN is the distance between point B and point N, AP is the distance between point A and point P, and PN is the distance between point P and point N.

[0208] In some embodiments of the present disclosure, as shown in the attached Figure 8 As shown, when the door 200 is opened to 115°, the line between the axis point B of the second hinge axis 372 and the axis point N of the fifth hinge axis 375, that is, BN, may have a second angle τ with the box front wall 110. The second angle τ may be greater than or equal to 90°.

[0209] During the process of opening the door 200, the second rod 330 can be considered the component of the hinge assembly 300 that blocks the largest area of ​​the access opening. The second hinge axis 372 and the fifth hinge axis 375 are both connected to the second rod 330. To a certain extent, the area of ​​the access opening blocked by the door 200 and the hinge assembly 300 can be characterized by the second angle τ between the line connecting the axis point B of the second hinge axis 372 and the axis point N of the fifth hinge axis 375, that is, the line BN and the front wall 110. The larger the second angle τ, the smaller the area of ​​the access opening blocked by the door 200 and the hinge assembly 300.

[0210] In the disclosed embodiment, by setting the second angle τ when the door body 200 is opened to 115° to be greater than or equal to 90°, the door body 200 and the hinge assembly 300 can provide a smaller area of ​​obstruction to the access opening, or even completely eliminate the obstruction. This also allows ample space to be reserved for the various rods and hinge shafts in the hinge assembly 300, facilitating an increase in the cross-sectional area or volume of the rods and hinge shafts, thereby facilitating both the reliability and stability of the hinge assembly 300 and the refrigerator.

[0211] Setting the second angle τ to less than 90° can reserve more space for the rods and hinge shafts in the hinge assembly 300, further improving the reliability and stability of the hinge assembly 300 and the refrigerator. However, if the second angle τ is too small, the door 200 and the hinge assembly 300 will block a large area of ​​the access opening, making it difficult for users to access items and observe the contents of the storage compartment.

[0212] In some embodiments of the present disclosure, Figure 8 As shown, when the door 200 is opened to 115°, the line between the axis point B of the second hinge axis 372 and the axis point M of the fourth hinge axis 374, i.e., BM, may have a third angle μ with the box front wall 110. The third angle μ may be greater than or equal to 85°.

[0213] During the process of opening the door 200, the second rod 330 can be considered the component of the hinge assembly 300 that blocks the largest area of ​​the access opening. The second hinge axis 372 and the fourth hinge axis 374 are both connected to the second rod 330. To a certain extent, the area of ​​the access opening blocked by the door 200 and the hinge assembly 300 can be characterized by the third angle μ between the line connecting the axis point B of the second hinge axis 372 and the axis point M of the fourth hinge axis 374, i.e., BM, and the front wall 110. The larger the third angle μ, the smaller the area of ​​the access opening blocked by the door 200 and the hinge assembly 300.

[0214] In the disclosed embodiment, by setting the third angle μ to be greater than or equal to 85° when the door body 200 is opened to 115°, the door body 200 and the hinge assembly 300 can provide a smaller area of ​​obstruction to the access opening, or even completely eliminate the obstruction. This also allows ample space to be reserved for the various rods and hinge shafts in the hinge assembly 300, facilitating an increase in the cross-sectional area or volume of the rods and hinge shafts, thereby facilitating a balanced approach to the reliability and stability of the hinge assembly 300 and the refrigerator.

[0215] Setting the third angle μ to less than 85° can reserve more space for the rods and hinge shafts in the hinge assembly 300, further improving the reliability and stability of the hinge assembly 300 and the refrigerator. However, if the third angle μ is too small, the door 200 and the hinge assembly 300 will block a large area of ​​the access opening, making it difficult for users to access items and observe the contents of the storage compartment.

[0216] In some embodiments of the present disclosure, when the door body 200 is opened to 115°, the third angle μ may be less than or equal to 90°. If the third angle μ is greater than 90°, the distance between the second rod 330 and the cabinet side edge R of the cabinet 400 will be too close, causing the first rod 320, which is closer to the cabinet side edge R than the second rod 330, to collide with the cabinet side edge R. By setting the third angle μ to less than or equal to 90°, the present embodiment can minimize the possibility of the first rod 320 colliding with the cabinet side edge R due to the distance between the second rod 330 and the cabinet side edge R being too close during the opening of the door body 200.

[0217] The aforementioned 115° door opening angle refers to the case where each rod and hinge axis are considered as theoretical lines and points. The theoretical design angle is used as a reference in this disclosure. In the actual design of the embodiment of the present disclosure, due to the need to consider the strength and width of the rods and the diameter of the hinge axis, the actual maximum door opening angle is limited by reserving space for the rods and the hinge axis. Therefore, the actual maximum door opening angle may be less than the theoretical design door opening angle of 115°, but it will not affect the theoretical design door opening angle.

[0218] In the embodiment of the present disclosure, Figure 13 and Figure 14 As shown, when the door body 200 is closed, the door front wall 210 of the door body 200 intersects with the first door side wall 230 to form a first reference point E. The distance between the first reference point E and the axis point P, i.e., EP, can be greater than or equal to 20 mm. EP can also be less than or equal to 60 mm.

[0219] In some embodiments of the present disclosure, reference Figure 14 Since both point P and point Q are located on the fifth rod 360, their relative positions are fixed, and they have similar motion trajectories. During the opening process of door 200, points P and Q, having similar motion trajectories, can cause the door as a whole to initially move toward the front and interior of the refrigerator relative to the cabinet. After the door is opened to a certain opening angle α, door 200 moves toward the front and exterior of the refrigerator relative to cabinet 100. As door 200 continues to open, it moves toward the exterior and rear of the refrigerator relative to cabinet 100.

[0220] And refer to Figure 40 The first side edge J of the door body 200 is a fixed point on the door body 200, and its relative position to point P and point Q is fixed. Therefore, the first side edge J also has a motion trajectory similar to that of point P and point Q. The motion trajectory of the first side edge J is as follows: Figure 40 The motion trajectory shown in j.

[0221] The relative position between the first reference point E and the cabinet side edge R is fixed, so the first reference point E can be used to represent the position of the cabinet side edge R. The relative position between the main track point P and the first side edge J of the door body 200 is fixed, so to a certain extent, the main track point P can be used to represent the position of the first side edge J of the door body 200.

[0222] The distance between the first reference point E and the axis point P, i.e., EP, can be greater than or equal to 20 mm. EP can also be less than or equal to 60 mm. When the door 200 is opened, an EP within this numerical range ensures a sufficiently large safety distance between the first side edge J of the door 200 and the cabinet side edge R, thereby preventing the door 200 from colliding with the cabinet 400.

[0223] If EP is less than 20 mm, EP is too small. During the automatic opening process of the door 200, the distance between the first side edge J of the door 200 and the cabinet side edge R is too small, and the door 200 is likely to collide with the cabinet 400. If EP is greater than 60 mm, EP is too large. During the automatic opening process of the door 200, the door 200 requires a large opening space, which increases the working space required for normal use of the refrigerator and reduces the applicability of the refrigerator.

[0224] The variation trend of EP defines the motion trajectory of the main trajectory point P. In the embodiment of the present disclosure, the motion trajectory of the main trajectory point P can be adjusted by adjusting the variation trend of EP, thereby adjusting the motion trajectory of the door body 200 .

[0225] Exemplarily, the process of opening the door body 200 may include a first door opening stage and a second door opening stage.

[0226] When the door opening angle α does not reach the first preset door opening angle α1, that is, when α∈[0°, α1), it is the first door opening stage.

[0227] When the door opening angle α exceeds the first preset door opening angle α1 but does not reach the second preset door opening angle α2, that is, when α∈[α1, α2), it is the second door opening stage. The second preset door opening angle α2 is greater than the first preset door opening angle α1.

[0228] The first preset door opening angle α1 can be any value between 20° and 30°. The second preset door opening angle α2 can be any value between 95° and α max Any value between .

[0229] For example, the first preset door opening angle α1 can be 20° or 30°. The second preset door opening angle α2 can be 95°, 100°, or 110° or the maximum door opening angle α max .

[0230] In the first door opening stage, the door body 200 can first move slightly toward the front and inner side of the refrigerator relative to the box body 100, so that in the initial stage of opening the door body 200, the part of the door body 200 close to its first side edge J will not collide with the accommodating side wall 411 and the cabinet side edge R of the cabinet 400.

[0231] In the second door opening stage, the door body 200 can move significantly toward the front and outside of the refrigerator relative to the cabinet body 100, so that in the later stage of opening the door body 200, the part of the door body 200 close to its first side edge J will not collide with the cabinet side edge R and the cabinet front wall 420 of the cabinet 400.

[0232] In some embodiments of the present disclosure, Figure 18 As shown, in the first door opening stage and the second door opening stage, as the door opening angle α increases, the distance between the first reference point E and the axis point P, that is, EP, can gradually increase.

[0233] EP gradually increases. In the first door opening stage, the door body 200 can move more significantly and quickly toward the front and inner side of the refrigerator relative to the cabinet 100. At the same time, the first side edge J of the door body 200 can move toward the inner side and front side of the refrigerator relative to the cabinet 100, so that the first side edge J of the door body 200 does not exceed the cabinet side wall 130 of the cabinet 100 and can extend more beyond the cabinet front wall 420, thereby reducing or eliminating the possibility of the first side edge J colliding with the cabinet. In the second door opening stage, the door body 200 can move more significantly toward the front and outer side of the refrigerator. At the same time, the first side edge J of the door body 200 can move more significantly toward the front and outer side of the refrigerator relative to the cabinet 100.

[0234] In other embodiments of the present disclosure, Figure 19 As shown, in the first door opening stage, EP may first increase and then decrease. For example, the decrease amplitude Δep1 of EP may not exceed 2 mm. In the second door opening stage, EP may gradually increase.

[0235] Compared to the above embodiment, in the first door opening stage, when the door opening angle α is small, EP increases, and the door body 200 can move relatively significantly toward the front and inside of the refrigerator. At the same time, the first side edge J of the door body 200 can move relative to the cabinet 100 toward the inside and front of the refrigerator, so that the first side edge J of the door body 200 does not exceed the side wall 130 of the cabinet 100. In the first door opening stage, when the door opening angle α is large, the first side edge J of the door body 200 has accumulated a margin of inward and forward movement during the small-angle door opening process. At this time, that is, in the relatively large door opening angle range in the first door opening stage, EP decreases slightly, and there is a possibility that the first side edge J of the door body 200 may slightly exceed the side wall 130 of the cabinet 100. However, within this larger door opening angle range, the door body 200 has already moved significantly toward the front of the refrigerator relative to the cabinet 100, causing the first side edge J to extend beyond the cabinet front wall 420. This creates a sufficiently large safety distance between the first side edge J and the cabinet side edge R, thereby reducing or eliminating the possibility of the first side edge J colliding with the cabinet. Although the amount of movement of the door body 200 toward the inside of the refrigerator is relatively small during the first door opening stage, the purpose of the invention can still be achieved. During the second door opening stage, the door body 200 can move more significantly toward the front and outside of the refrigerator, and at the same time, the first side edge J of the door body 200 can move more significantly toward the front and outside of the refrigerator relative to the cabinet 100.

[0236] In other embodiments of the present disclosure. Figure 20As shown, in the first door opening stage, EP may initially remain constant at a first value ep1, then decrease, and then gradually increase. For example, the EP decrease amplitude Δep2 may not exceed 2 mm. Alternatively, the EP decrease amplitude Δep2 may be greater than 5% of the first value ep1 and less than 10% of the first value ep1. In the second door opening stage, EP may gradually increase.

[0237] Compared to the embodiment in which EP gradually increases, in the first door opening stage, when the door opening angle α is small, EP can initially remain unchanged, and the door body 200 can relatively significantly and quickly move toward the front and inner side of the refrigerator. At the same time, the first side edge J of the door body 200 can move toward the inner side and front side of the refrigerator relative to the cabinet 100, so that the first side edge J of the door body 200 does not exceed the side wall 130 of the cabinet 100. In the first door opening stage, when the door opening angle α is large, that is, within the larger door opening angle range of the first door opening stage, EP decreases slightly, and there is a possibility that the first side edge J of the door body 200 slightly exceeds the side wall 130 of the cabinet 100. However, in the first door opening stage, within the larger door opening angle range, the door body 200 has already moved significantly toward the front of the refrigerator relative to the cabinet 100, causing the first side edge J to significantly extend beyond the cabinet front wall 420. This creates a sufficiently large safety distance between the first side edge J and the cabinet side edge R, thereby reducing or eliminating the possibility of the first side edge J colliding with the cabinet. Although the amount of movement of the door body 200 toward the inside of the refrigerator is relatively small in the first door opening stage, the purpose of the invention can still be achieved. In the second door opening stage, the door body 200 can move more significantly toward the front and outside of the refrigerator, and at the same time, the first side edge J of the door body 200 can move more significantly toward the front and outside of the refrigerator relative to the cabinet 100.

[0238] In other embodiments of the present disclosure, Figure 21 As shown, in the first door opening stage, EP can be kept constant at the second value ep2. In the second door opening stage, EP can be gradually increased.

[0239] Compared to the embodiment in which EP gradually increases, in the first door opening stage, when the door opening angle α is small, EP remains unchanged, and the door body 200 can move relatively significantly and quickly toward the front and inner side of the refrigerator. At the same time, the first side edge J of the door body 200 can move toward the inner side and front side of the refrigerator relative to the cabinet 100, so that the first side edge J of the door body 200 does not exceed the cabinet side wall 130 of the cabinet 100. In the first door opening stage, when the door opening angle α is large, that is, within the larger door opening angle range of the first door opening stage, EP remains unchanged. When the first side edge J of the door body 200 is approximately flush with the cabinet side wall 130 of the cabinet 100, that is, within this larger door opening angle range, the door body 200 has already moved significantly toward the front of the refrigerator relative to the cabinet 100, so that the first side edge J has already significantly exceeded the cabinet front wall 420, thereby ensuring a sufficient safety distance between the first side edge J of the door body 200 and the cabinet side edge R, thereby reducing or eliminating the possibility of collision between the first side edge J and the cabinet 400. Although the movement of the door body 200 toward the inside of the refrigerator is relatively small in the first door opening stage, the purpose of the invention can still be achieved. In the second door opening stage, the door body 200 can move more significantly toward the front and outside of the refrigerator, and at the same time, the first side edge J of the door body 200 can move more significantly toward the front and outside of the refrigerator relative to the cabinet 100.

[0240] In other embodiments of the present disclosure, Figure 22 As shown, in the first door opening stage, EP can decrease or increase multiple times, that is, EP can fluctuate. For example, the fluctuation amplitude Δep3 of EP can be less than 2mm. In the second door opening stage, EP can gradually increase.

[0241] Compared to the embodiment in which EP gradually increases, during the first door opening stage, within a small angle range, the door body 200 can move relatively rapidly and significantly toward the front and interior of the refrigerator. Simultaneously, the first side edge J of the door body 200 moves toward the front and interior of the refrigerator relative to the cabinet 100, ensuring that the first side edge J of the door body 200 does not exceed the side wall 130 of the cabinet 100. During the first door opening stage, within a small angle range, the first side edge J of the door body 200 moves inward. Although EP decreases slightly multiple times, the first side edge J of the door body 200 slightly exceeds the side wall 420. However, during the first door opening stage, the door body 200 continues to move toward the front of the refrigerator relative to the cabinet 100, ensuring that the first side edge J already exceeds the cabinet front wall 420. This ensures a sufficient safety distance between the first side edge J of the door body 200 and the cabinet side edge R, thereby reducing or eliminating the possibility of a collision between the first side edge J and the cabinet 400. Although the movement of the door body 200 toward the inside of the refrigerator is relatively small in the first door opening stage, the purpose of the invention can still be achieved. In the second door opening stage, the door body 200 can move more significantly toward the front and outside of the refrigerator, and at the same time, the first side edge J of the door body 200 can move more significantly toward the front and outside of the refrigerator relative to the cabinet 100.

[0242] In the embodiment of the present disclosure, Figure 13 As shown, when the door body 200 is closed, the axis point A is projected onto the door front wall 210 along the direction y, and intersects with the door front wall 210 to form a second reference point F. Figure 23 2 is a schematic diagram of the hinge assembly 300 when the door body 200 is closed, and a schematic diagram of the change trend of FP.

[0243] The distance between the second reference point F and the axis point P, i.e., FP, may be greater than or equal to 14 mm. FP may be less than or equal to 54 mm.

[0244] The relative position between the second reference point F and the cabinet side edge R is fixed, so the second reference point F can be used to represent the position of the cabinet side edge R. The relative position between the main track point P and the first side edge J of the door body 200 is fixed, so to a certain extent, the main track point P can be used to represent the position of the first side edge J of the door body 200.

[0245] The distance between the second reference point F and the axis point P, i.e., FP, can be greater than or equal to 14 mm. FP can also be less than or equal to 54 mm. When the door 200 is opened, an FP within this numerical range ensures a sufficiently large safety distance between the first side edge J of the door 200 and the cabinet side edge R, thereby preventing the door 200 from colliding with the cabinet 400.

[0246] If FP is less than 14 mm, FP is too small. During the automatic opening process of the door 200, the distance between the first side edge J of the door 200 and the cabinet side edge R is too small, and the door 200 is likely to collide with the cabinet 400. If FP is greater than 54 mm, FP is too large. During the automatic opening process of the door 200, the door 200 requires a large opening space, which increases the working space required for normal use of the refrigerator and reduces the applicability of the refrigerator.

[0247] The changing trend of FP defines the motion trajectory of the main trajectory point P. In the embodiment of the present disclosure, the motion trajectory of the main trajectory point P can be adjusted by adjusting the changing trend of FP, thereby adjusting the motion trajectory of the door body 200. In the first door opening stage, the door body 200 can first move slightly toward the front and inner side of the refrigerator relative to the cabinet 100, so that in the early stage of opening the door body 200, the part of the door body 200 close to its first side edge J will not collide with the accommodating side wall 411 and the cabinet side edge R of the cabinet 400. In the second door opening stage, the door body 200 can move significantly toward the front and outer side of the refrigerator relative to the cabinet 100, so that in the later stage of opening the door body 200, the part of the door body 200 close to its first side edge J will not collide with the cabinet side edge R and the cabinet front wall 420 of the cabinet 400.

[0248] In some embodiments of the present disclosure, Figure 24 As shown, in the first door opening stage and the second door opening stage, as the door opening angle α increases, the distance between the second reference point F and the axis point P, that is, FP, can gradually increase.

[0249] FP gradually increases. In the first door opening stage, the door body 200 can move more significantly and quickly toward the front and inside of the refrigerator relative to the cabinet 100. At the same time, the first side edge J of the door body 200 can move toward the inside and front of the refrigerator relative to the cabinet 100, so that the first side edge J of the door body 200 does not extend beyond the cabinet sidewall 130 of the cabinet 100 and extends more beyond the cabinet front wall 420, thereby reducing or eliminating the possibility of the first side edge J colliding with the cabinet. In the second door opening stage, the door body 200 can move more significantly toward the front and outside of the refrigerator. At the same time, the first side edge J of the door body 200 can move more significantly toward the front and outside of the refrigerator relative to the cabinet 100.

[0250] In other embodiments of the present disclosure, Figure 25 As shown, in the first door opening stage, FP may first increase and then decrease. For example, the decrease amplitude Δfp1 of FP may not exceed 2 mm. In the second door opening stage, FP may gradually increase.

[0251] Compared to the above embodiment, in the first door opening stage, when the door opening angle α is relatively small, FP increases, and the door body 200 can move relatively significantly toward the front and inward side of the refrigerator. At the same time, the first side edge J of the door body 200 can move relatively significantly toward the inward and front side of the refrigerator relative to the cabinet 100, so that the first side edge J of the door body 200 does not exceed the side wall 130 of the cabinet 100. In the first door opening stage, when the door opening angle α is relatively large, the first side edge J of the door body 200 has accumulated a margin of inward and forward movement during the small-angle door opening process. At this time, that is, in the relatively large door opening angle range in the first door opening stage, FP decreases slightly, and there is a possibility that the first side edge J of the door body 200 may slightly exceed the side wall 130 of the cabinet 100. However, within this larger door opening angle range, the door body 200 has already moved significantly toward the front of the refrigerator relative to the cabinet 100, causing the first side edge J to extend beyond the cabinet front wall 420. This creates a sufficiently large safety distance between the first side edge J and the cabinet side edge R, thereby reducing or eliminating the possibility of the first side edge J colliding with the cabinet. Although the amount of movement of the door body 200 toward the inside of the refrigerator is relatively small during the first door opening stage, the purpose of the invention can still be achieved. During the second door opening stage, the door body 200 can move more significantly toward the front and outside of the refrigerator, and at the same time, the first side edge J of the door body 200 can move more significantly toward the front and outside of the refrigerator relative to the cabinet 100.

[0252] In other embodiments of the present disclosure. Figure 26 As shown, in the first door opening stage, FP may initially remain constant at the third value fp1, then decrease, and then gradually increase. For example, the FP decrease amplitude Δfp2 may not exceed 2 mm. Alternatively, the FP decrease amplitude Δfp2 may be greater than 5% and less than 10% of the third value fp1. In the second door opening stage, FP may gradually increase.

[0253] Compared to the embodiment in which FP gradually increases, in the first door opening stage, when the door opening angle α is small, FP can initially remain unchanged, and the door body 200 can relatively significantly and quickly move toward the front and inner side of the refrigerator. At the same time, the first side edge J of the door body 200 can move toward the inner side and front side of the refrigerator relative to the cabinet 100, so that the first side edge J of the door body 200 does not exceed the side wall 130 of the cabinet 100. In the first door opening stage, when the door opening angle α is large, that is, within the larger door opening angle range of the first door opening stage, FP decreases slightly, and there is a possibility that the first side edge J of the door body 200 slightly exceeds the side wall 130 of the cabinet 100. However, in the first door opening stage, within the larger door opening angle range, the door body 200 has already moved significantly toward the front of the refrigerator relative to the cabinet 100, causing the first side edge J to significantly extend beyond the cabinet front wall 420. This creates a sufficiently large safety distance between the first side edge J and the cabinet side edge R, thereby reducing or eliminating the possibility of the first side edge J colliding with the cabinet. Although the amount of movement of the door body 200 toward the inside of the refrigerator is relatively small in the first door opening stage, the purpose of the invention can still be achieved. In the second door opening stage, the door body 200 can move more significantly toward the front and outside of the refrigerator, and at the same time, the first side edge J of the door body 200 can move more significantly toward the front and outside of the refrigerator relative to the cabinet 100.

[0254] In other embodiments of the present disclosure, Figure 27 As shown, in the first door opening stage, FP can be kept constant at the fourth value fp2. In the second door opening stage, FP can be gradually increased.

[0255] Compared to the embodiment in which FP gradually increases, in the first door opening stage, when the door opening angle α is small, FP remains unchanged, and the door body 200 can move relatively significantly and quickly toward the front and inboard of the refrigerator. At the same time, the first side edge J of the door body 200 can move toward the inboard and front of the refrigerator relative to the cabinet 100, so that the first side edge J of the door body 200 does not exceed the cabinet sidewall 130 of the cabinet 100. In the first door opening stage, when the door opening angle α is large, that is, within the larger door opening angle range of the first door opening stage, FP remains unchanged. When the first side edge J of the door body 200 is substantially flush with the cabinet sidewall 130 of the cabinet 100, that is, within this larger door opening angle range, the door body 200 has already moved significantly toward the front of the refrigerator relative to the cabinet 100, so that the first side edge J has already significantly exceeded the cabinet front wall 420, thereby ensuring a sufficient safety distance between the first side edge J of the door body 200 and the cabinet side edge R, thereby reducing or eliminating the possibility of collision between the first side edge J and the cabinet 400. Although the movement of the door body 200 toward the inside of the refrigerator is relatively small in the first door opening stage, the purpose of the invention can still be achieved. In the second door opening stage, the door body 200 can move more significantly toward the front and outside of the refrigerator, and at the same time, the first side edge J of the door body 200 can move more significantly toward the front and outside of the refrigerator relative to the cabinet 100.

[0256] In other embodiments of the present disclosure, Figure 28 As shown, in the first door opening stage, FP can decrease or increase multiple times, that is, FP can fluctuate. For example, the fluctuation amplitude Δfp3 of FP can be less than 2mm. In the second door opening stage, FP can gradually increase.

[0257] Compared to the embodiment in which FP gradually increases, during the first door opening phase, within a small angle range, the door body 200 can move relatively rapidly and significantly toward the front and interior of the refrigerator. Simultaneously, the first side edge J of the door body 200 moves toward the front and interior of the refrigerator relative to the cabinet 100, ensuring that the first side edge J of the door body 200 does not exceed the side wall 130 of the cabinet 100. During the first door opening phase, within a small angle range, the first side edge J of the door body 200 moves inward. Although FP decreases slightly multiple times, the first side edge J of the door body 200 slightly exceeds the side wall 420. However, during the first door opening phase, the door body 200 continuously moves toward the front of the refrigerator relative to the cabinet 100, ensuring that the first side edge J already exceeds the cabinet front wall 420. This ensures a sufficient safety distance between the first side edge J of the door body 200 and the cabinet side edge R, thereby reducing or eliminating the possibility of a collision between the first side edge J and the cabinet 400. Although the movement of the door body 200 toward the inside of the refrigerator is relatively small in the first door opening stage, the purpose of the invention can still be achieved. In the second door opening stage, the door body 200 can move more significantly toward the front and outside of the refrigerator, and at the same time, the first side edge J of the door body 200 can move more significantly toward the front and outside of the refrigerator relative to the cabinet 100.

[0258] In some embodiments of the present disclosure, the process of opening the door body 200 may include a third door opening stage and a fourth door opening stage. When the door opening angle α exceeds the third preset door opening angle α3 and does not reach the fourth preset door opening angle α4, that is, α∈[α3,α4), it is the third door opening stage. And when the door opening angle α exceeds the fourth preset door opening angle α 4， To the maximum door opening angle α max , that is, α∈[α4,α max] It is the fourth door opening stage.

[0259] The fourth preset door opening angle α4 is greater than the third preset door opening angle α3.

[0260] The third preset door opening angle α3 can be any angle between 10° and 30°. Figure 29 In the embodiment, the third preset door opening angle α3 may be the door opening angle α when point P crosses point P2. For example, the third preset door opening angle α3 may be 10°, 15°, or 20°.

[0261] The fourth preset door opening angle α4 can be any angle between 90° and 105°. Figure 29 , the fourth preset door opening angle α4 can be the door opening angle α when the distance between point P and the plane where the pick-up and release opening of the box is located is the largest. Exemplarily, the fourth preset door opening angle α4 can be 90°, 98° or 105°.

[0262] In the third door opening stage, the orthographic projection length of the distance between the first reference point E and the axis point P in the direction perpendicular to the front wall 110 of the box, that is, the orthographic projection length of EP in the direction y, always increases, so that after the door body 200 is opened to the third preset door opening angle α3, point P moves away from one side of the box body and the outside of the box body relative to the box body 100, so that the movement trend of the door body 200 is to move away from one side of the box body and the outside of the box body.

[0263] In the fourth door opening stage, the orthographic projection length of the distance between the first reference point E and the axis point P in the direction perpendicular to the front wall 110 of the box, that is, the orthographic projection length of EP in the direction y gradually decreases, so that after the door body 200 is opened to the fourth preset door opening angle α4, point P moves relative to the box body 100 toward one side of the box body and the outside of the box body, so that the movement trend of the door body 200 is to move toward one side of the box body and the outside of the box body.

[0264] In the refrigerator of the related art, the door 200 is opened to the third preset door opening angle α3 and then to the maximum door opening angle α max During the process, the length of the positive projection of EP in the direction y gradually increases, and the door body 200 moves relative to the cabinet 100 toward the side of the cabinet away from the refrigerator and the outside of the cabinet.

[0265] In some embodiments of the present disclosure, since the door body 200 can have a larger opening angle α, the door body 200 can move toward the outside of the refrigerator to a greater extent. This is conducive to the door body 200 moving more toward the front and outside of the box body. In the process of the door body opening from a large angle to the maximum opening angle, there is more space for the door body 200 to move toward the side closer to the box body, avoiding occupying more indoor space when the door body is opened to a large angle.

[0266] like Figure 29As shown, assuming that when the refrigerator of the embodiment of the present disclosure only increases the first angle θ compared to the related art, the motion trajectory of the main trajectory point P is the motion trajectory p1, and the motion trajectory of the auxiliary trajectory point Q is the motion trajectory q1. The horizontal dotted line is the position of the door front wall 210 when the door body 200 is closed, which is recorded as the preset door front wall 210'. The vertical dotted line is the position of the first door side wall 230 when the door body 200 is closed, which is recorded as the preset first door side wall 230'. The preset door front wall 210' and the preset first door side wall 230' are fixed positions during the process of opening the door body 200. Point P' is located on the preset door front wall 210', and the distance between the first reference point E and point P' is equal to the distance between the first reference point E and the main trajectory point P when the door body 200 is closed, that is, EP=EP'. When the main trajectory point P moves to point P1 on the preset door front wall 210', the distance between point P' and point P1, that is, P'P1, represents the amount of movement of the main trajectory point P toward the inside of the refrigerator in the horizontal direction x, which can be used to a certain extent to characterize the amount of movement of the door body 200 toward the inside of the refrigerator in the horizontal direction x during the process of opening the door body 200.

[0267] It should be noted that the technical solution of increasing the first angle θ in the embodiment of the present disclosure compared to the related art can achieve the purpose of the invention of increasing the maximum door opening angle. Although the movement of the door body toward the inside of the refrigerator is slightly reduced in the early stage of door opening, the movement of the door body 200 toward the front of the refrigerator will not be significantly reduced, and the reduced movement will not significantly reduce the distance between the first side edge J of the door body 200 and the cabinet side edge R, so that there is still a sufficient safety distance between the first side edge J of the door body 200 and the cabinet side edge R, which can reduce or eliminate the possibility of collision between the first side edge J of the door body 200 and the cabinet side edge R. In combination with the capabilities of those skilled in the art, the purpose of the invention can still be achieved.

[0268] like Figure 29 As shown, in other embodiments of the present disclosure, the motion trajectory of the main trajectory point P can be improved. The motion trajectory p is the improved motion trajectory of the main trajectory point P. When the main trajectory point P moves to point P2 on the preset door front wall 210', the movement amount of the main trajectory point P toward the inside of the refrigerator in the horizontal direction x is P'P2, and P'P2 is greater than P'P1. That is to say, compared with the above embodiment, this embodiment increases the movement amount of the main trajectory point P toward the inside of the refrigerator in the horizontal direction x, thereby increasing the movement amount of the door body 200 toward the inside of the refrigerator in the horizontal direction x during the process of opening the door body 200, thereby reducing the possibility of the part of the door body 200 close to its first side edge J colliding with the accommodating side wall 411 and the cabinet side edge R of the cabinet 400.

[0269] In some embodiments of the present disclosure, reference Figure 30 and Figure 36The line connecting the axis point A and the axis point P when the door body 200 is closed has a fourth angle δ with the horizontal line x1 passing through the axis point A and parallel to the front wall 110 of the box. The fourth angle δ may be greater than or equal to 8°. Preferably, the fourth angle δ may be greater than 9°. Figure 32 , and the fourth angle δ is 6-7°. Compared to the related art, the embodiment of the present disclosure increases the fourth angle δ. When the main trajectory point P moves to point P3 on the horizontal line x1 during the process of opening the door body 200, the angle of counterclockwise rotation of EP3 relative to EP is larger. The larger this angle, the greater the amount of movement of the main trajectory point P in the horizontal direction x toward the inside of the refrigerator, thereby increasing the amount of movement of the door body 200 in the horizontal direction x toward the inside of the refrigerator.

[0270] If the fourth angle δ is less than 8°, which is too small, the counterclockwise rotation angle of EP3 relative to EP will be smaller when the main trajectory point P moves to point P3 on the horizontal line x1 during the process of opening the door body 200. The smaller this angle, the smaller the amount of movement of the main trajectory point P toward the inside of the refrigerator in the horizontal direction x. As a result, the door body 200 also moves less toward the inside of the refrigerator in the horizontal direction x, making it more likely for the door body 200 to collide with the storage side wall 411 and the cabinet side edge R of the cabinet 400.

[0271] In some embodiments of the present disclosure, the fourth angle δ may be less than or equal to 15°. If the fourth angle δ is greater than 15°, the fourth angle δ is too large, and the main trajectory point P is closer to the front wall 110 when the door is closed, causing at least some of the rods in the hinge assembly 300 to deviate toward the front wall 110. This can easily lead to an excessive thickness H of the hinge assembly 300, thereby affecting the thermal insulation performance of the door 200. Setting the fourth angle δ to less than or equal to 15° is conducive to ensuring that the hinge assembly 300 has a sufficiently small thickness, thereby facilitating the miniaturization of the hinge assembly 300.

[0272] In some embodiments of the present disclosure, Figure 30 As shown, when the door body 200 is closed, the distance between the axis point A and the axis point P when the door body 200 is closed, that is, AP, can be greater than or equal to 12 mm. Figure 31 As shown, when the door body 200 is closed, the distance between the axis point A and the axis point P of the door body 200 when closed, i.e., AP, is 11 mm. Compared with the related art, the embodiment of the present disclosure increases the distance between the axis point A and the axis point P of the door body 200 when closed, so that the axis point P is away from the axis point A. As a result, there is a sufficient space between AL and the horizontal line x1, i.e., the side of the first rod 320 facing away from the front wall 110, which is conducive to increasing the fourth angle δ, thereby facilitating an increase in the movement of the door body 200 toward the inside of the refrigerator in the horizontal direction x, thereby preventing the door body 200 from colliding with the cabinet 400 during the process of opening the door body 200.

[0273] If AP is less than 12 mm, AP is too small, which will cause the axis point P to be closer to the axis point A when the door body 200 is closed, which is not conducive to increasing the fourth angle δ, and increases the difficulty of increasing the amount of movement of the door body 200 toward the inside of the refrigerator in the horizontal direction x, making it easy for the door body 200 to collide with the cabinet 400 during the process of opening the door body 200.

[0274] In some embodiments of the present disclosure, AP may be less than or equal to 16 mm. If AP is greater than 16 mm, AP is too large, and when the door is closed, the main trajectory point P is closer to the front wall 110, causing at least some of the rods in the hinge assembly 300 to deviate toward the front wall 110. This can easily lead to an excessive thickness H of the hinge assembly 300, thereby affecting the thermal insulation performance of the door 200. Setting AP to less than or equal to 16 mm helps ensure that the hinge assembly 300 has a sufficiently small thickness, thereby facilitating miniaturization of the hinge assembly 300.

[0275] In some embodiments of the present disclosure, Figure 32 As shown, the line connecting the axis point P and the axis point L and the line connecting the axis point L and the axis point M form a fifth angle β, which faces away from the refrigerator front wall 110 when the door body 200 is closed. In other words, the PLM can be bent, and when the door body 200 is closed, the PLM can face away from the refrigerator front wall 110. By bending the PLM, the axis point L can be brought closer to the refrigerator front wall 110 when the door body 200 is closed, thereby increasing the space between AL and the horizontal line x1, so that there is sufficient space on the side of the first rod 320 facing away from the refrigerator front wall 110, which is conducive to increasing the fourth angle δ, thereby facilitating the increase in the amount of movement of the door body 200 toward the inside of the refrigerator in the horizontal direction x, thereby preventing the door body 200 from colliding with the cabinet 400 during the process of opening the door body 200.

[0276] In some embodiments of the present disclosure, the fifth angle β may be less than or equal to 176°.

[0277] In some embodiments of the present disclosure, the fifth angle β may be greater than or equal to 170°.

[0278] In some embodiments of the present disclosure, Figure 33As shown, the first rod 320 can be bent, and the bending direction of the first rod 320 is away from the refrigerator front wall 110 when the door 200 is closed. In other words, the first rod 320 can be bent in a direction away from the refrigerator front wall 110 when the door 200 is closed. This configuration can increase the space between the first rod 320 and the horizontal line x1 when the door 200 is closed, so that there is sufficient space on the side of the first rod 320 facing away from the refrigerator front wall 110, which helps to increase the fourth angle δ, thereby facilitating greater movement of the door 200 in the horizontal direction x toward the inside of the refrigerator, thereby preventing the door 200 from colliding with the cabinet 400 during the process of opening the door 200.

[0279] In other embodiments of the present disclosure, Figure 33 As shown, a relief recess can be provided on the side of the first rod 320 facing the sixth hinge axis 376 when the door 200 is closed. The relief recess can be used to accommodate at least a portion of the sixth hinge axis 376, at least a portion of the third rod 340, and at least a portion of the fifth rod 360. This configuration can increase the space between the first rod 320 and the horizontal line x1 when the door 200 is closed, so that there is sufficient space on the side of the first rod 320 facing away from the front wall 110, which helps to increase the fourth angle δ, thereby facilitating greater movement of the door 200 in the horizontal direction x toward the inside of the refrigerator, thereby preventing the door 200 from colliding with the cabinet 400 during the process of opening the door 200.

[0280] In some embodiments of the present disclosure, Figure 34 As shown, the portion of the second rod 330 located between the axis point B and the axis point M, i.e., BM, can be bent, and the bending direction of BM can be directed away from the refrigerator front wall 110 when the door body 200 is closed. In other words, BM can be bent in a direction away from the refrigerator front wall 110 when the door body 200 is closed. This arrangement can increase the space above BM when the door body 200 is closed, providing sufficient space for the axis point L to move toward the refrigerator front wall 110, which is conducive to increasing the space between AL and the horizontal line x1, and further helps to increase the fourth angle δ, thereby facilitating an increase in the amount of movement of the door body 200 toward the inside of the refrigerator in the horizontal direction x, thereby preventing the door body 200 from colliding with the cabinet 400 during the process of opening the door body 200.

[0281] In some embodiments of the present disclosure, Figure 35 As shown, at least part of the rods in the hinge assembly 300 can be bent, which will not be described in detail here.

[0282] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

[0283] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that the refrigerator include: A box body having a storage chamber, wherein the box body has a box front wall located at the front side and a box side wall connected to the box front wall; a door body, which is used to open or close the storage chamber; A hinge assembly connecting the box body and the door body, the hinge assembly comprising: A mounting base connected to the front wall of the box; a first rod, a first end of which is rotatably connected to the mounting base via a first hinge shaft; a second rod, a first end of which is rotatably connected to the mounting base via a second hinge shaft, wherein the axis of the second hinge shaft is closer to the front wall of the box and closer to the center of the storage chamber than the axis of the first hinge shaft; a third rod, wherein a middle portion thereof is rotatably connected to the second end of the first rod via a third hinge shaft, and a first end of the third rod is rotatably connected to the middle portion of the second rod via a fourth hinge shaft; a fourth rod, a first end of which is rotatably connected to the second end of the second rod via a fifth hinge shaft; a fifth rod, fixedly connected to the door body, wherein a first end of the fifth rod is rotatably connected to the second end of the third rod via a sixth hinge shaft; and a second end of the fifth rod is rotatably connected to the second end of the fourth rod via a seventh hinge shaft; Wherein, the mounting seat, the first rod, the second rod, the third rod, the fourth rod and the fifth rod form a six-link mechanism; Applying a pulling force to the door body to switch the door body from a closed state to an open state, the fifth rod drives the third rod and the fourth rod, so that the third rod rotates in a first direction relative to the fifth rod, and the fourth rod rotates in the first direction relative to the fifth rod; the third rod drives the first rod and the second rod, so that the first rod rotates in a second direction relative to the mounting seat, and the second rod rotates in the second direction relative to the mounting seat; the fourth rod drives the second rod, so that the second rod rotates in the second direction relative to the mounting seat; wherein the second direction is opposite to the first direction; Applying a thrust to the door body to switch the door body from an open state to a closed state, the fifth rod drives the third rod and the fourth rod, so that the third rod rotates relative to the fifth rod in the second direction, and the fourth rod rotates relative to the fifth rod in the second direction; the third rod drives the first rod and the second rod, so that the first rod rotates relative to the mounting seat in the first direction, and the second rod rotates relative to the mounting seat in the first direction; the fourth rod drives the second rod, so that the second rod rotates relative to the mounting seat in the first direction; Define the axis center point of the first hinge axis as point A, the axis center point of the second hinge axis as point B, the axis center point of the fifth hinge axis as point N, the axis center point of the sixth hinge axis as point P, and the axis center point of the seventh hinge axis as point Q; The mounting base includes a first mounting plate connected to the front wall of the box; the bottom surface of the first mounting plate in contact with the front wall of the box is the mounting surface, and the end surface of the side of the mounting base parallel to the side wall of the box is defined as the side end surface of the mounting base; A first angle θ between a line connecting the axis of the first hinge shaft and the axis of the second hinge shaft and a side end surface of the mounting base is greater than or equal to 25°, and when a line PQ connecting the point P and the point Q is parallel to the mounting surface, the following conditions are satisfied: 0.97<((AB*cosθ) 2 +(AB*sinθ+BN) 2 ) / (AP+PN) 2 <1.03, where AB is the distance between points A and B, BN is the distance between points B and N, AP is the distance between points A and P, and PN is the distance between points P and N.

2. The refrigerator according to claim 1, wherein: The first angle θ is less than or equal to 40°.

3. The refrigerator according to claim 2, characterized in that The door body includes a front wall, a rear wall and two side walls; the front wall and the rear wall are both parallel to the box front wall, and the front wall is farther away from the box body than the rear wall; the two side walls are arranged opposite to each other and are connected to the front wall and the rear wall; the angle between the front wall and the box front wall is the door opening angle; The door side wall closer to the hinge assembly among the two door side walls is a first door side wall; when the door body is closed, the first door side wall intersects with the door front wall to form a first reference point; The distance between the first reference point and the axis of the sixth hinge axis is greater than or equal to 20 mm and less than or equal to 60 mm; In the process of opening the door body, the distance between the axis of the first hinge shaft and the axis of the sixth hinge shaft, and the distance between the axis of the second hinge shaft and the axis of the seventh hinge shaft increase with the increase of the door opening angle, so that the door body first moves toward the front side and inward of the box body, and then moves toward the front side and outward of the box body.

4. The refrigerator according to claim 2, characterized in that The door body includes a door front wall, a door rear wall and two door side walls; the door front wall and the door rear wall are both parallel to the box front wall, and the door front wall is farther away from the box body than the door rear wall; the two door side walls are arranged opposite to each other and are both connected to the door front wall and the door rear wall; The door side wall closer to the hinge assembly among the two door side walls is a first door side wall; when the door body is closed, the first door side wall intersects with the door front wall to form a first reference point; The angle between the door front wall and the box front wall is the door opening angle; the first door side wall intersects with the door front wall to form a first side edge; During the process of opening the door body, when the door opening angle does not reach the first preset door opening angle, it is the first door opening stage; when the door opening angle exceeds the first preset door opening angle but does not reach the second preset door opening angle that is greater than the first preset door opening angle, it is the second door opening stage; During the first door opening stage and the second door opening stage, the distance between the first reference point and the axis of the sixth hinge shaft gradually increases, so that the first side edge moves first toward the front and inside of the refrigerator relative to the box body, and then toward the front and outside of the refrigerator.

5. The refrigerator according to claim 2, characterized in that The door body includes a door front wall, a door rear wall and two door side walls; the door front wall and the door rear wall are both parallel to the box front wall, and the door front wall is farther away from the box body than the door rear wall; the two door side walls are arranged opposite to each other and are both connected to the door front wall and the door rear wall; The door side wall closer to the hinge assembly among the two door side walls is a first door side wall; when the door body is closed, the first door side wall intersects with the door front wall to form a first reference point; The angle between the door front wall and the box front wall is the door opening angle; the first door side wall intersects with the door front wall to form a first side edge; During the process of opening the door body, when the door opening angle does not reach the first preset door opening angle, it is the first door opening stage; when the door opening angle exceeds the first preset door opening angle but does not reach the second preset door opening angle that is greater than the first preset door opening angle, it is the second door opening stage; In the first door opening stage, the distance between the first reference point and the axis of the sixth hinge axis first increases and then decreases; in the second door opening stage, the distance between the first reference point and the axis of the sixth hinge axis gradually increases; so that the first side edge moves first toward the front and inner side of the refrigerator relative to the box body, and then moves toward the front and outer side of the refrigerator.

6. The refrigerator according to claim 5, characterized in that In the first door opening stage, the distance between the first reference point and the axis of the sixth hinge shaft decreases by no more than 2 mm.

7. The refrigerator according to claim 2, characterized in that The door body includes a door front wall, a door rear wall and two door side walls; the door front wall and the door rear wall are both parallel to the box front wall, and the door front wall is farther away from the box body than the door rear wall; the two door side walls are arranged opposite to each other and are both connected to the door front wall and the door rear wall; The door side wall closer to the hinge assembly among the two door side walls is a first door side wall; when the door body is closed, the first door side wall intersects with the door front wall to form a first reference point; The angle between the door front wall and the box front wall is the door opening angle; the first door side wall intersects with the door front wall to form a first side edge; During the process of opening the door body, when the door opening angle does not reach the first preset door opening angle, it is the first door opening stage; when the door opening angle exceeds the first preset door opening angle but does not reach the second preset door opening angle that is greater than the first preset door opening angle, it is the second door opening stage; In the first door opening stage, the distance between the first reference point and the axis of the sixth hinge shaft first remains unchanged at a first value, then decreases, and then gradually increases; in the second door opening stage, the distance between the first reference point and the axis of the sixth hinge shaft gradually increases; so that the first side edge moves first toward the front and inner side of the refrigerator relative to the box body, and then moves toward the front and outer side of the refrigerator.

8. The refrigerator according to claim 7, characterized in that In the first door opening stage, the distance between the first reference point and the axis of the sixth hinge shaft decreases by less than 2 mm; or, the distance decreases by more than 5% of the first value and less than 10% of the first value.

9. The refrigerator according to claim 2, wherein: The door body includes a door front wall, a door rear wall and two door side walls; the door front wall and the door rear wall are both parallel to the box front wall, and the door front wall is farther away from the box body than the door rear wall; the two door side walls are arranged opposite to each other and are both connected to the door front wall and the door rear wall; The door side wall closer to the hinge assembly among the two door side walls is a first door side wall; when the door body is closed, the first door side wall intersects with the door front wall to form a first reference point; The angle between the door front wall and the box front wall is the door opening angle; the first door side wall intersects with the door front wall to form a first side edge; During the process of opening the door body, when the door opening angle does not reach the first preset door opening angle, it is the first door opening stage; when the door opening angle exceeds the first preset door opening angle but does not reach the second preset door opening angle that is greater than the first preset door opening angle, it is the second door opening stage; In the first door opening stage, the distance between the first reference point and the axis of the sixth hinge axis remains unchanged at a second value; in the second door opening stage, the distance between the first reference point and the axis of the sixth hinge axis gradually increases; so that the first side edge moves first toward the front and inner side of the refrigerator relative to the box body, and then moves toward the front and outer side of the refrigerator.

10. The refrigerator according to claim 2, wherein: The door body includes a door front wall, a door rear wall and two door side walls; the door front wall and the door rear wall are both parallel to the box front wall, and the door front wall is farther away from the box body than the door rear wall; the two door side walls are arranged opposite to each other and are both connected to the door front wall and the door rear wall; The door side wall closer to the hinge assembly among the two door side walls is a first door side wall; when the door body is closed, the first door side wall intersects with the door front wall to form a first reference point; The angle between the door front wall and the box front wall is the door opening angle; the first door side wall intersects with the door front wall to form a first side edge; During the process of opening the door body, when the door opening angle does not reach the first preset door opening angle, it is the first door opening stage; when the door opening angle exceeds the first preset door opening angle but does not reach the second preset door opening angle that is greater than the first preset door opening angle, it is the second door opening stage; In the first door opening stage, the distance between the first reference point and the axis of the sixth hinge axis fluctuates; in the second door opening stage, the distance between the first reference point and the axis of the sixth hinge axis gradually increases; so that the first side edge moves first toward the front and inner side of the refrigerator relative to the box body, and then moves toward the front and outer side of the refrigerator.

11. The refrigerator according to claim 10, characterized in that In the first door opening stage, the distance between the first reference point and the axis of the sixth hinge shaft decreases by less than 2 mm.

12. The refrigerator according to any one of claims 1 to 11, characterized in that: The door body includes a front wall, a rear wall and two side walls; the front wall and the rear wall are parallel to the box front wall when the door body is closed, and the front wall is farther away from the box body than the rear wall; the two side walls are arranged opposite to each other and are connected to the front wall and the rear wall; the angle between the front wall and the box front wall is the door opening angle; When the door opening angle is 115°, a second angle is formed between the line connecting the axis of the second hinge shaft and the axis of the fifth hinge shaft and the front wall of the box, and the second angle is greater than or equal to 90°.

13. The refrigerator according to any one of claims 1 to 11, characterized in that: The door body includes a front wall, a rear wall and two side walls; the front wall and the rear wall are parallel to the box front wall when the door body is closed, and the front wall is farther away from the box body than the rear wall; the two side walls are arranged opposite to each other and are connected to the front wall and the rear wall; the angle between the front wall and the box front wall is the door opening angle; When the door opening angle is 115°, there is a third angle between the line connecting the axis of the second hinge shaft and the axis of the fourth hinge shaft and the front wall of the box, and the third angle is greater than or equal to 85° and less than or equal to 90°.

14. The refrigerator according to any one of claims 1 to 11, characterized in that: A ratio of a distance between an axis point of the second hinge axis and an axis point of the fourth hinge axis to a distance between an axis point of the fourth hinge axis and an axis point of the sixth hinge axis is a second ratio, and the second ratio is less than 1.

0.

15. The refrigerator according to claim 14, wherein: The second ratio is greater than 0.

85.

16. The refrigerator according to claim 14, wherein The second ratio is greater than 0.9.

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