refrigerator

Abstract

Provided is a refrigerator, comprising a refrigerator body (10), a door body (30), and a hinge assembly which connects the refrigerator body (10) to the door body (30). The hinge assembly comprises a first shaft (41) and a second shaft (42) which are fixed on the refrigerator body (10), and a guiding portion (50) and a directing portion (60) which are disposed on the door body (30). The first shaft (41) cooperates with the guiding portion (50), and the second shaft (42) cooperates with the directing portion (60). During the process of the door body (30) opening from a closed state, the first shaft (41) moves relative to the guiding portion (50), and the second shaft (42) moves relative to the directing portion (60). During the process of the door body (30) opening from a ninth angle G9 to a turning angle GZ, formula (1). During the process of the door body (30) opening from the turning angle GZ to an eighth angle G8, formula (II).

Description

[0001] This application claims priority to Chinese patent application No. 202410408676.8, filed on April 3, 2024, Chinese patent application No. 202410083235.5, filed on January 19, 2024, Chinese patent application No. 202311628629.6, filed on November 30, 2024, Chinese patent application No. 202311266553.7, filed on September 27, 2023, and Chinese patent application No. 202311057555.5, filed on August 21, 2023, the entire contents of which are incorporated herein by reference.TECHNICAL FIELD

[0002] The present disclosure relates to the field of refrigeration equipment technology, in particular to a refrigerator.BACKGROUND

[0003] Built-in refrigerators are typically integrally built into custom-built housing cabinets. In order to improve the fit between the refrigerator and the external housing cabinet, the gap between the outer wall of the refrigerator and the inner wall of the housing cabinet needs to be within a preset range. However, due to the limitation by the space of the housing cabinet, during the opening of the door body of the refrigerator, the vertical edge of the door body that is hinged to the refrigerator body is prone to interfere with the inner wall of the external housing cabinet during rotation. Due to the limitation by the space of the housing cabinet, in order to ensure that the door body can be fully opened, it is necessary to make the dimension by which the corner of the door body exceeds the refrigerator body during the opening process of the door body be within a predetermined range.SUMMARY

[0004] In an aspect, there is provided a refrigerator including a refrigerator body, a door body, and a hinge assembly. The refrigerator body includes a storage compartment, a first body side wall and a second body side wall. The storage compartment includes an access opening. The second body side wall is disposed opposite to the first body side wall. The door body includes a door front wall and a door side wall. The door front wall is a side wall away from the refrigerator body when the door body is closed. The door side wall is close to the first body side wall and is connected to the door front wall. The hinge assembly connects the refrigerator body and the door body, to enable the door body to rotate relative to the refrigerator body to open or close the access opening. The hinge assembly includes a hinge plate, a first shaft, a second shaft, a guide portion, and a direction-guiding portion. The hinge plate includes a connection portion and an extension portion. The connection portion is connected to the refrigerator body and is close to the first body side wall. The extension portion extends from the connection portion toward a side away from the refrigerator body. The first shaft and the second shaft are disposed at the extension portion. The guide portion and the direction-guiding portion are disposed at the door body, and are close to the door side wall. The first shaft cooperates with the guide portion, and the second shaft cooperates with the direction-guiding portion. During a process of opening the door body from a closed state, the first shaft moves relative to the guide portion, and the second shaft moves relative to the direction-guiding portion. A displacement coordinate system AOB is established in a projection on a plane where a top wall of the refrigerator body is located; wherein, in the displacement coordinate system AOB, OB is perpendicular to a plane where the access opening is located, and takes a direction from the access opening pointing toward the door front wall when the door body is closed as positive; OA is parallel to the plane where the access opening is located, and takes a direction from the second body side wall pointing toward the first body side wall as positive; and the displacement coordinate system AOB is a coordinate system that is stationary relative to the refrigerator body. During an entire process of opening the door body from a ninth angle G 9 to an eighth angle G 8 , the door body has a first direction displacement S 1 parallel to the door front wall and a second direction displacement S 2 parallel to the door side wall while rotating; wherein, a component displacement of the first direction displacement S 1 along the A axis is A 1 , and a component displacement of the first direction displacement S 1 along the B axis is B 1 ; a component displacement of the second direction displacement S 2 , along the A axis is A 2 , and a component displacement of the second direction displacement S 2 , along the B axis is B 2 . During a process of opening the door body from the ninth angle G 9 to a direction-changing angle Gz, A 1 > 0, B 1 < 0; A 2 > 0, B 2 > 0; A 0 = A 1 + A 2 > 0, B 0 = B 1 + B 2 > 0. During a process of opening the door body from the direction-changing angle Gz to a direction-altering angle G', A 1 < 0, B 1 > 0; A 2 > 0, B 2 > 0; A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0. During a process of opening the door body from the direction-altering angle G' to 90°, A 1 < 0, B 1 > 0; A 2 < 0, B 2 < 0; A 0 , = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0. When the door body is opened to 90°, A 1 = 0, B 1 > 0; A 2 < 0, B 2 = 0; A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0. During a process of opening the door body from 90° to an eighth angle G 8 , A 1 > 0, B 1 > 0; A 2 < 0, B 2 > 0; A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0; wherein 0° ≤ G 9 < G Z < G' < 90° < G 8 .

[0005] In another aspect, there is provided a refrigerator including a refrigerator body, a door body, and a hinge assembly. The refrigerator body includes a storage compartment, a first body side wall and a second body side wall. The storage compartment includes an access opening. The second body side wall is disposed opposite to the first body side wall. The door body includes a door front wall and a door side wall. The door front wall is away from the refrigerator body when the door body is closed. The door side wall is close to the first body side wall and is connected to the door front wall. The hinge assembly connects the refrigerator body and the door body, to enable the door body to rotate relative to the refrigerator body to open or close the access opening. The hinge assembly includes a hinge plate, a first shaft, a second shaft, a guide portion, and a direction-guiding portion. The hinge plate includes a connection portion and an extension portion. The connection portion is connected to the refrigerator body and is close to the first body side wall. The extension portion extends from the connection portion toward a side away from the refrigerator body. The first shaft and the second shaft are disposed at the extension portion. The guide portion and the direction-guiding portion are disposed at the door body, and are close to the door side wall. The first shaft cooperates with the guide portion, and the second shaft cooperates with the direction-guiding portion. During a process of opening the door body from a closed state, the first shaft moves relative to the guide portion, and the second shaft moves relative to the direction-guiding portion. A displacement coordinate system AOB is established in a projection on a plane where a top wall of the refrigerator body is located; wherein, in the displacement coordinate system AOB, OB is perpendicular to a plane where the access opening is located, and takes a direction from the access opening pointing toward the door front wall when the door body is closed as positive; OA is parallel to the plane where the access opening is located, and takes a direction from the second body side wall pointing toward the first body side wall as positive; and the displacement coordinate system AOB is a coordinate system that is stationary relative to the refrigerator body. During an entire process of opening the door body from a negative-direction angle G -< to an eighth angle G 8 , the door body has a first direction displacement S 1 parallel to the door front wall and a second direction displacement S 2 parallel to the door side wall while rotating; wherein, a component displacement of the first direction displacement S 1 along the A axis is A 1 , and a component displacement of the first direction displacement S 1 along the B axis is B 1 ; a component displacement of the second direction displacement S 2 along the A axis is A 2 , and a component displacement of the second direction displacement S 2 , along the B axis is B 2 . During a process of opening the door body from the negative-direction angle G -< to 0°, A 1 > 0, B 1 > 0; A 2 < 0, B 2 > 0; A 0 = A 1 + A 2 > 0, B 0 = B 1 + B 2 > 0. During a process of opening the door body from 0° to a direction-changing angle Gz, A 1 > 0, B 1 < 0; A 2 > 0, B 2 > 0; A 0 = A 1 + A 2 > 0, B 0 = B 1 + B 2 > 0. During a process of opening the door body from the direction-changing angle G Z to a direction-altering angle G', A 1 < 0, B 1 > 0; A 2 > 0, B 2 > 0; A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0. During a process of opening the door body from the direction-altering angle G' to 90°, A 1 < 0, B 1 > 0; A 2 < 0, B 2 < 0; A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0. When the door body is opened to 90°, A 1 = 0, B 1 > 0; A 2 < 0, B 2 = 0; A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0. During a process of opening the door body from 90° to an eighth angle G 8 , A 1 > 0, B 1 > 0; A 2 < 0, B 2 > 0; A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0; wherein, G -< < 0° < G Z < G' < 90° < G 8 .BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG. 1 is a perspective view of a refrigerator according to some embodiments. FIG. 2 is a top view of a refrigerator according to some embodiments. FIG. 3 is a partial structure diagram of a door body coordinate system X 1 O 1 Y 1 of a door body of a refrigerator according to some embodiments. FIG. 4 is a partial structure diagram of a door body of a refrigerator according to some embodiments. FIG. 5 is a diagram of relative positions of a guide trajectory line, a direction-guiding trajectory line, and an axial midpoint trajectory line on a door body of a refrigerator according to some embodiments. FIG. 6 is a view at a hinge when a door body of a refrigerator is in a closed state according to some embodiments. FIG. 7 is a view at a hinge when a door body of a refrigerator is opened to φ = G 1 according to some embodiments. FIG. 8 is a view at a hinge when a door body of a refrigerator is opened to φ = G 2 according to some embodiments. FIG. 9 is a view at a hinge when a door body of a refrigerator is opened to φ = G 3 according to some embodiments. FIG. 10 is a view at a hinge when a door body of a refrigerator is opened to φ = G 4 according to some embodiments. FIG. 11 is a view at a hinge when a door body of a refrigerator is opened to φ = G 5 according to some embodiments. FIG. 12 is a view at a hinge when a door body of a refrigerator is opened to φ = G 6 according to some embodiments. FIG. 13 is a view at a hinge when a door body of a refrigerator is opened to φ = G 7 according to some embodiments. FIG. 14 is a view at a hinge when a door body of a refrigerator is opened to φ = G 8 according to some embodiments. FIG. 15 is a diagram of a movement trajectory of a first side edge W, a second side edge N, and a side seal edge F relative to a hinge of a refrigerator according to some embodiments. FIG. 16 is a diagram of situations of movements of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion of a refrigerator according to some embodiments. FIG. 17 is a diagram of positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion when a door body of a refrigerator is opened to φ = G 1 according to some embodiments. FIG. 18 is a diagram of positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion when a door body of a refrigerator is opened to φ = G 2 according to some embodiments. FIG. 19 is a diagram of positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion when a door body of a refrigerator is opened to φ = G 3 according to some embodiments. FIG. 20 is a diagram of positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion when a door body of a refrigerator is opened to φ = G 4 according to some embodiments. FIG. 21 is a diagram of positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion when a door body of a refrigerator is opened to φ = G 5 according to some embodiments. FIG. 22 is a diagram of positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion when a door body of a refrigerator is opened to φ = G 6 according to some embodiments. FIG. 23 is a diagram of positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion when a door body of a refrigerator is opened to φ = G 7 according to some embodiments. FIG. 24 is a diagram of positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion when a door body of a refrigerator is opened to φ = G 8 according to some embodiments. FIG. 25 is a diagram of relative positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion during a second stage of an opening process of a door body of a refrigerator according to some embodiments. FIG. 26 is a diagram of relative positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion during an opening process in which a door body of a refrigerator is opened from G 5 to G 6 in a second stage according to some embodiments. FIG. 27 is a diagram of relative positions of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion during a third stage of an opening process of a door body of a refrigerator according to some embodiments. FIG. 28 is a diagram of relative positions of a door body and a refrigerator body when the door body of the refrigerator is closed according to some embodiments. FIG. 29 is a diagram of relative positions of a door body and a refrigerator body when an opening angle φ of the door body of a refrigerator φ(0°, G') according to some embodiments. FIG. 30 is a diagram of relative positions of a door body and a refrigerator body when an opening angle φ of the door body of a refrigerator φ(G', 90°) according to some embodiments. FIG. 31 is a diagram of relative positions of a door body and a refrigerator body when an opening angle φ of the door body of a refrigerator is 90° according to some embodiments. FIG. 32 is a diagram of relative positions of a door body and a refrigerator body when an opening angle φ of the door body of a refrigerator φ(90°, G max ) according to some embodiments. FIG. 33 is a diagram of situations of movements of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion during an opening process of a door body of a refrigerator in the related technologies compared with a refrigerator of some embodiments of the present disclosure. FIG. 34 is a diagram of relative positions of a door body and a refrigerator body in various stages of opening from a closed state to a maximum angle of a refrigerator in the related technologies compared with a refrigerator of some embodiments of the present disclosure. FIG. 35 is a diagram of comparison between a position when a door body of a refrigerator is opened to G 1 and a position when the door body rotates from a closed state to G 1 using its axial midpoint I in the closed state as a rotation axis according to some embodiments. FIG. 36 is a diagram of comparison between a position when a door body of a refrigerator is opened to G 2 and a position when the door body rotates from a state in which it is opened to G 1 to G 2 using its axial midpoint I when opened to G 2 as a rotation axis according to some embodiments. FIG. 37 is a diagram of comparison between a position when a door body of a refrigerator is opened to G 3 and a position when the door body rotates from a state in which it is opened to G 2 to G 3 using its axial midpoint I when opened to G 3 as a rotation axis according to some embodiments. FIG. 38 is a diagram of comparison between a position when a door body of a refrigerator is opened to G 4 and a position when the door body rotates from a state in which it is opened to G 3 to G 4 using its axial midpoint I when opened to G 4 as a rotation axis according to some embodiments. FIG. 39 is a diagram of comparison between a position when a door body of a refrigerator is opened to G 5 and a position when the door body rotates from a state in which it is opened to G 4 to G 5 using its axial midpoint I when opened to G 5 as a rotation axis according to some embodiments. FIG. 40 is a diagram of comparison between a position when a door body of a refrigerator is opened to G 6 and a position when the door body rotates from a state in which it is opened to G 5 to G 6 using its axial midpoint I when opened to G 6 as a rotation axis according to some embodiments. FIG. 41 is a diagram of comparison between a position when a door body of a refrigerator is opened to G 7 and a position when the door body rotates from a state in which it is opened to G 6 to G 7 using its axial midpoint I when opened to G 7 as a rotation axis according to some embodiments. FIG. 42 is a diagram of comparison between a position when a door body of a refrigerator is opened to G max and a position when the door body rotates from a state in which it is opened to G 6 to G max using its axial midpoint I when opened to G max as a rotation axis according to some embodiments. FIG. 43 is a diagram of comparison between the translational movements when the opening angles of the door body of the refrigerator are two angles including φ i and φ (i+i) respectively according to some embodiments. FIG. 44 is a diagram of a relationship between relative positions of an axial midpoint trajectory line of the refrigerator and a midplane of the door body according to some embodiments. FIG. 45 is a diagram of situations of movements of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion of a refrigerator, and their relative positions relative to a first angle bisector plane and a second angle bisector plane according to some embodiments. FIG. 46 is a diagram of relative positions of an axial midpoint, a first angle bisector plane, and a second angle bisector plane when a door body of a refrigerator is opened to a fourth angle G 4 according to some embodiments. FIG. 47 is a diagram of relative positions of a first shaft, a second shaft, a first angle bisector plane, and a second angle bisector plane when a door body of a refrigerator is in a closed state according to some embodiments. FIG. 48 is a structural diagram of a door body of a refrigerator including a guide trajectory line in another configuration form when the door body is closed according to some embodiments. FIG. 49 is a diagram of a second hinge member of a refrigerator in another configuration form according to some embodiments. FIG. 50 is a diagram of a second hinge member of a refrigerator in yet another configuration form according to some embodiments. FIG. 51 is a structural diagram when a door body of a refrigerator is in a closed state according to some embodiments. FIG. 52 is a diagram of situations of movements of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion in the embodiment shown in FIG. 51. FIG. 53 is a diagram of parameters of the door body in the embodiment shown in FIG. 51. FIG. 54 is a diagram of relative positions of a door body and a refrigerator body during a process of opening the door body of the refrigerator from a ninth angle G 9 to a direction-changing angle Gz according to some embodiments. FIG. 55 is a structural diagram when another door body of a refrigerator is in a closed state according to some embodiments. FIG. 56 is a diagram of situations of movements of a first shaft relative to a guide portion and a second shaft relative to a direction-guiding portion in the embodiment shown in FIG. 55. FIG. 57 is a diagram of relative positions of a door body and a refrigerator body during a process of opening the door body of the refrigerator from a negative-direction angle G -< to 0° according to some embodiments. FIG. 58 is a top view of another refrigerator. FIG. 59 is a partially enlarged structural view of FIG. 58. FIG. 60 is a top view of another refrigerator. FIG. 61 is a perspective structural view of FIG. 60. FIG. 62 is a diagram of relative positions of a flip beam and a refrigerator body of the refrigerator shown in FIG. 60. FIG. 63 is a diagram of relative positions of the flip beam and a direction-guiding rail when the door body of the refrigerator shown in FIG. 60 is closed to an angle G S . FIG. 64 is a diagram of relative positions of the flip beam and a direction-guiding rail when the door body of the refrigerator shown in FIG. 60 is closed to an angle G F . FIG. 65 is a structural diagram of a locked state between a first cooperating portion and a second cooperating portion of the refrigerator when the door body is closed according to some embodiments. FIG. 66 is a diagram of various parameters when a door body of a refrigerator is in a closed state according to some embodiments. FIG. 67 is a diagram of various parameters when a door body of a refrigerator is opened to a maximum angle according to some embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0007] Some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all of the embodiments. All other embodiments obtained by persons skilled in the art based on the embodiments provided by the present disclosure shall fall within the protection scope of the present disclosure.

[0008] Unless otherwise required by the context, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third-person singular form "comprises" and the present participle form "comprising" are construed in an open, inclusive meaning, that is, "comprising, but not limited to". In the descriptions 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 related to this embodiment or example are included in at least one of the embodiments or examples of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be included in any one or more embodiments or examples in any suitable manner.

[0009] In the following description, the terms "first" and "second" are used for purposes of description only, and cannot be understood to indicate or imply relative importance or implicitly indicate the number of technical features indicated. Therefore, the features defined by "first" and "second" may explicitly or implicitly include one or more of the features. In the descriptions of the embodiments of the present disclosure, unless otherwise stated, "a plurality of" means two or more.

[0010] In describing some embodiments, the expressions "coupled" and "connected" and their extended expressions may be used. The term "connected" should be understood in a broad sense, for example, the "connected" can be a fixed connection or a detachable connection, or become integrated; it may be directly connected, or may be indirectly connected through an intermediary. The term "coupled" indicates that two or more components are in direct physical contact or electrical contact. The term "coupled" or "communicatively coupled" may also mean that two or more components 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 herein.

[0011] "At least one of A, B, and C" has the same meaning as "at least one of A, B, or C" and they each include the following combinations of A, B, and C: A alone, B alone, C alone, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0012] "A and / or B" includes a combination of the following three: A alone, B alone, and a combination of A and B.

[0013] The use of "suitable for" or "configured to" herein means open and inclusive language that does not exclude devices suitable for or configured to perform additional tasks or steps.

[0014] As used herein, "about", "roughly", or "approximately" includes the set forth value as well as an average within an acceptable range of deviation from a particular value, where the acceptable range of deviation is determined by one of ordinary skill in the art taking into account the measurement in question and the error associated with the measurement of a particular amount (i.e., limitations of the measurement system).

[0015] As used herein, "parallel", "perpendicular", and "equal" include the set forth circumstances as well as circumstances similar to the set forth circumstances, and the range of said similar circumstances is within an acceptable range of deviation, where the acceptable range of deviation is determined by one of ordinary skill in the art taking into account the measurement in question and the error associated with the measurement of a particular amount (i.e., limitations of the measurement system). For example, "parallel" includes absolute parallel and approximate parallel, where the acceptable range of deviation for the approximate parallel may be, for example, a deviation within 5°; "vertical" includes absolute vertical and approximate vertical, where the acceptable range of deviation for the approximate vertical may also be, for example, a deviation within 5°. "Equal" includes absolute equal and approximate equal, where the acceptable range of deviation for the approximate equal may be, for example, the difference between the two equal values is less than or equal to 5% of either one of them.

[0016] At present, in order to meet the installation requirements of built-in refrigerators, for most built-in refrigerators, one of the door body and the refrigerator body is provided with double shafts, and the other thereof is provided with a direction-guiding structure cooperating with the double shafts. In this way, the door body is controlled to move inward while rotating to open. Under the configuration in which the double shafts cooperate with the direction-guiding structure, the door body is moved inward during the opening process of the door body, so as to ensure that the corners of the door body are located in a preset range during the opening process of the door body.

[0017] When customizing the housing cabinet to which the built-in refrigerator is to be built in, it is usually based on a standard that when the door body of the refrigerator is closed, the front wall of the door body is kept flush with the plane where the opening end of the housing cabinet is located, so as to adapt the size of the refrigerator to the size of the housing cabinet to realize hidden flush-mounted installation. Under a premise that the door body of the built-in refrigerator can be smoothly opened without interfering with the inner wall of the housing cabinet, with the increase of the opening angle of the door body of the refrigerator, the front wall of the door body moves closer to the adjacent end of the housing cabinet close to its own opening. When the front wall of the door body comes into contact with the adjacent end of the housing cabinet close to its own opening, the door body is opened to a limit position.

[0018] In summary, the limit angle to which the door body of the refrigerator installed in the housing cabinet can be opened is limited by the size of the housing cabinet for realizing the hidden installation of the refrigerator and the gap between the outer wall of the refrigerator and the inner wall of the housing cabinet, resulting in that the limit angle to which the door body of the refrigerator installed in the housing cabinet can be opened is limited, and it is inconvenient for the user to take out or put in articles.

[0019] In order to solve the above problems, in the refrigerator according to some embodiments of the present disclosure, a first hinge member is provided on the refrigerator body, a second hinge member is provided on the door body, a first shaft and a second shaft are provided on the first hinge member, and a guide portion and a direction-guiding portion are provided on the second hinge member. In this way, the first shaft cooperates with the guide portion, and the second shaft cooperates with the direction-guiding portion, so that the door body moves inward by a predetermined distance during the opening process of the door body, thereby avoiding the door body from colliding with the housing cabinet. In addition, the maximum angle to which the door body of the refrigerator placed within the housing cabinet can be opened is greater than or equal to 115°, so that the door body can be opened to a predetermined angle when the refrigerator is in the built-in state, so as to facilitate the user to take out or put in articles.

[0020] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the drawings, it is defined that a side facing the user when the refrigerator is in use is referred to as a front side, and a side opposite to the front side is referred to as a rear side.

[0021] In some embodiments, referring to FIG. 1, the refrigerator includes a refrigerator body 10, and the refrigerator body 10 includes at least one storage compartment.

[0022] In some embodiments of the present disclosure, the refrigerator body 10 defines a plurality of storage compartments, and the storage compartment is configured to store items. The front end of the storage compartment is formed with an access opening, for placing food into or taking food out from the storage compartment.

[0023] In some embodiments, the refrigerator further includes a refrigeration device, and the refrigeration device is configured to supply cold air to the storage compartment to perform low-temperature storage of items placed in the storage compartment.

[0024] In some embodiments, the refrigerator further includes a door body 30, and the door body 30 is connected to the refrigerator body 10 to open and close the storage compartment. For example, the door body 30 is rotatably connected to the refrigerator body 10 to open or close the access opening of the storage compartment.

[0025] In some embodiments, the refrigerator further includes hinge assemblies, and the hinge assemblies are respectively provided at both ends of the door body 30 in the height direction (the up-down direction as shown in FIG. 1).

[0026] For example, the door body 30 is rotatably connected to the refrigerator body 10 by a hinge assembly located at its upper part and a hinge assembly located at its lower part.

[0027] In some embodiments, the refrigerator body 10 includes a first body side wall and a second body side wall (that is, a right side wall and a left side wall of the refrigerator body 10) arranged opposite to each other.

[0028] The hinge assembly includes a first hinge member, and the first hinge member is disposed on the refrigerator body 10 and is close to the first body side wall.

[0029] The hinge assembly further includes a second hinge member, and the second hinge member is disposed at the end of the door body 30 that is close to the first hinge member. The first hinge member and the second hinge member cooperate with each other, and can rotate relative to each other, to allow the door body 30 to rotate relative to the refrigerator body 10.

[0030] In some embodiments, referring to FIG. 2, the door body 30 includes a door front wall 31, and the door front wall 31 is away from the refrigerator body 10 when the door body 30 is closed.

[0031] The door body 30 further includes a door rear wall 33, and the door rear wall 33 is disposed opposite to the door front wall 31.

[0032] The door body 30 further includes a door side wall 32, and the door side wall 32 is close to the first hinge member and is connected to the door front wall 31.

[0033] For example, if the first hinge member is located on the right side of the refrigerator body 10, then the right side surface of the door body 30 is the door side wall 32 when the door body 30 is closed. If the first hinge member is located on the left side of the refrigerator body 10, then the left side wall of the door body 30 is the door side wall 32 when the door body 30 is closed.

[0034] In some embodiments, referring to FIG. 2 and FIG. 51, the door front wall 31 and the door side wall 32 of the door body 30 intersect with each other to form a first side edge W, and the door side wall 32 and the door rear wall 33 intersect with each other to form a second side edge N. When the door body 30 is closed, the first side edge W is located on the side of the second side edge N away from the refrigerator body 10.

[0035] It is to be noted that, when both the door front wall 31 and the door side wall 32 are planar, the intersection line between the two planes is the theoretical first side edge W (similarly, the theoretical second side edge N is the intersection line between the two planes of the door side wall 32 and the door rear wall 33). In the process of actual production and processing, the intersection of the door front wall 31 and the door side wall 32 can be configured with a rounded corner transition, so that a curved surface is formed at the intersection of the door front wall 31 and the door side wall 32. In this case, on the curved surface at the intersection of the door front wall 31 and the door side wall 32, any straight line extending in the height direction of the door body 30 may represent the first side edge W (the same applies to the second side edge N). In some embodiments of the present disclosure, for convenience of description, the theoretical first side edge W and the theoretical second side edge N are used for description.

[0036] Further, a plane passing through the center of mass of the door body 30 and parallel to the door front wall 31 is referred to as a midplane C. During the opening of the door body 30, the midplane C moves with the door body 30.

[0037] It should be noted here that, in some embodiments of the present disclosure, in the technical solutions related to the midplane C, the distance between the midplane C and the door front wall 31 or the door rear wall 33 is smaller than the distance between the midplane C and the plane where the access opening of the refrigerator body 10 is located when the door body 30 is closed. That is, in some embodiments of the present disclosure, in the technical solutions related to the midplane C, when the door body 30 is closed, the door rear wall 33 corresponding to the midplane C is located on the side of the plane where the access opening of the refrigerator body 10 is located that is away from the rear wall of the refrigerator body 10.

[0038] In some embodiments, referring to FIGS. 2 and 3, the refrigerator further includes a door seal strip 5, and the door seal strip 5 is disposed on the door rear wall 33. When the door body 30 is closed, the door seal strip 5 is fitted to the front end surface of the refrigerator body 10 surrounding the access opening to seal the connection between the door body 30 and the refrigerator body 10, thereby ensuring that the door body 30 seals the access opening and avoiding leakage of cold air. For example, the door seal strip 5 has an annular shape. An edge of the door seal strip 5 close to the door side wall 32 and away from the door front wall 31 is referred to as a side seal edge F. The door seal strip 5 is located between the door rear wall 33 and the front end surface of the refrigerator body 10, and the door rear wall 33 is located on the side of the plane where the access opening of the refrigerator body 10 is located that is close to the door seal strip 5.

[0039] In some embodiments, referring to FIG. 2 and FIG. 6, the first hinge member includes a hinge plate 40, and the hinge plate 40 is disposed on the refrigerator body 10.

[0040] In some embodiments, the hinge plate 40 includes a connection portion 401, and the connection portion 401 is connected to the refrigerator body 10 and is close to the first body side wall. The connection portion 401 may be fastened to the top wall of the refrigerator body 10 by fasteners such as screws, pins, or bolts. The extension portion 402 may have a horizontal plate shape.

[0041] For example, for the hinge at the upper end of the door body 30, a connection portion 401 is connected to the top wall of the refrigerator body 10. For the hinge at the lower end of the door body 30, a connection portion 401 may be connected to the front end surface of the refrigerator body 10.

[0042] In some embodiments, the hinge plate 40 further includes an extension portion 402, and the extension portion 402 extends forward from the connection portion 401.

[0043] In some embodiments, the first hinge member further includes a first shaft 41, and the first shaft 41 is disposed on the hinge plate 40. For example, the first shaft 41 is disposed in the extension portion 402 of the first hinge member. The first hinge member further includes a second shaft 42, and the second shaft 42 is disposed on the hinge plate 40. The second shaft 42 is disposed in the extension portion 402 of the first hinge member. The second shaft 42 may be located at a side of the first shaft 41 away from the first body side wall.

[0044] In some embodiments, the second hinge member includes a guide portion 50, and the guide portion 50 is located at an end of the door body 30 close to the first hinge member. The second hinge member includes a direction-guiding portion 60, and the direction-guiding portion 60 is located at the end of the door body 30 close to the first hinge member.

[0045] The first shaft 41 is fitted to the guide portion 50, and the second shaft 42 is fitted to the direction-guiding portion 60. During the process in which the door body 30 rotates to be opened or closed, the first shaft 41 moves relative to the guide portion 50, and the second shaft 42 moves relative to the direction-guiding portion 60.

[0046] In some embodiments, the first shaft 41 performs a curved movement relative to the door body 30 under the guidance of the guide portion 50, and the second shaft 42 performs a curved movement relative to the door body 30 under the guidance of the direction-guiding portion 60.

[0047] The first shaft 41 and the second shaft 42 are disposed in the first hinge member connected to the refrigerator body 10, to serve as a defined shaft that guides the movement of the door body 30. For example, the first shaft 41 and the second shaft 42 extend in the height direction of the refrigerator body 10 (the up-down direction as shown in FIG. 1) to adapt to the guide portion 50 or the direction-guiding portion 60 disposed on the door body 30.

[0048] It is to be understood that, for a built-in refrigerator, an end surface that defines the opening of the housing cabinet is referred to as an opening end surface. After the refrigerator is built within the housing cabinet through the opening end surface, and when the door body 30 of the refrigerator is closed, the door front wall 31 of the door body 30 can be flush with the opening end surface of the housing cabinet. In some embodiments of the present disclosure, during the opening process of the door body 30, the first shaft 41 cooperates with the guide portion 50, and the second shaft 42 cooperates with the direction-guiding portion 60, to drive the door body 30 to move inward by a predetermined distance. In this way, when the user opens or closes the door body 30 of the refrigerator, the door body 30 of the refrigerator will not collide with the housing cabinet, thereby avoiding impact damage on the housing cabinet or the door body of the refrigerator. In addition, when the door body 30 of the refrigerator placed in the housing cabinet is to be opened from the closed state, the maximum angle at which the door body 30 can be opened is greater than or equal to 115° (for example, the maximum angle can be set to be greater than or equal to 120°), so that the door body 30 can be fully opened when the refrigerator is in the built-in state, so as to facilitate the retrieval of the objects.

[0049] It is to be noted that, the "flush" in that the door front wall 31 is flush with the opening end surface of the housing cabinet 100 described above includes a case where they are on the same plane, or a case where the distance between the two planes is 2 mm or less. For example, the door front wall 31 is located on the side of the opening end surface of the housing cabinet 100 away from the access opening, and the distance between the two planes is 2 mm or less, or, the door front wall 31 is located on the side of the opening end surface of the housing cabinet 100 close to the access opening, and the distance between the two planes is 2 mm or less.

[0050] In some embodiments, descriptions are made by taking an example in which the extension portions 402 located at both the upper end and the lower end of the door body 30 are respectively provided with the first shaft 41 and the second shaft 42, and the upper end and the lower end of the door body 30 are respectively provided with the guide portion 50 and the direction-guiding portion 60.

[0051] It is to be noted that, the configuration manners of the first shaft 41, the second shaft 42, the guide portion 50, and the direction-guiding portion 60 are not limited to be provided at both the upper end and the lower end of the door body 30, they can be configured as needed.

[0052] In some embodiments, as shown in FIG. 2 and FIG. 3, the plane where the side surface (first body side wall) of the refrigerator body 10 close to the hinge plate 40 is located is defined as a reference plane M 0 (referring to FIG. 15). The side of the reference plane M 0 away from the inner cavity of the storage compartment is referred to as an outer side, and the side thereof opposite to the outer side and close to the storage compartment is referred to as an inner side.

[0053] In some embodiments, in order to reduce the effect on the fit between the refrigerator and the housing cabinet caused by factors such as uneven ground and the deformation of the housing cabinet 100, so that the refrigerator can be placed in the housing cabinet 100 for use, when designing the size of the housing cabinet 100, the distance a' between the housing cabinet 100 and the side surface (the first body side wall, i.e. the reference plane M 0 ) of the refrigerator also needs to be considered.

[0054] It can be understood that if α' is less than 3 mm, the effect on the refrigerator caused by factors such as uneven ground and the deformation of the housing cabinet 100 may be increased, and the fit between the refrigerator and the housing cabinet 100 may be reduced. If a' is larger than 3 mm, a gap between the refrigerator and the side wall of the housing cabinet 100 will be caused, which decreases the aesthetic appearance.

[0055] In some embodiments, a' belongs to any value of 3 mm to 5 mm. For example, α' may be 3 mm, 4 mm, 5 mm, or the like. In this way, not only the gap between the refrigerator and the housing cabinet 100 can be reduced, but also the fit between the refrigerator and the housing cabinet 100 can be improved.

[0056] In some embodiments, α' = 3 mm. That is, the distance between the door side wall 32 of the door body 30 and the housing cabinet is 3 mm. In this way, not only the space requirement to place the refrigerator into the housing cabinet 100 can be satisfied, but also the gap between the refrigerator body 10 and the housing cabinet 100 after the refrigerator is placed in the housing cabinet 100 can be reduced, so as to improve the fitting degree between the refrigerator and the housing cabinet 100.

[0057] In addition, in some embodiments, in order to ensure that the door body 30 of the refrigerator can be fully opened, during rotation of the door body 30, a distance between the first side edge W of the door body 30 and the side surface (the reference plane M 0 ) of the refrigerator body 10 needs to be less than or equal to a', so as to avoid the first side edge W from colliding with the housing cabinet 100 and causing the door body 30 to fail to be opened normally.

[0058] In order to satisfy the above requirements, the door body 30 needs to be able to move inward during the rotation of the door body 30, so that the distance by which the first side edge W extends beyond the side surface (the reference plane M 0 ) of the refrigerator body 10 is restricted. It is to be noted that, taking an example in which the hinge plate 40 is provided on the right side of the door body 30 (in this example, the right side wall of the refrigerator body 10 is the first body side wall), then the inner side is the left side, that is, the door body 30 needs to be movable toward the left side. Taking an example in which the hinge plate 40 is provided on the left side of the door body 30, then the inner side is the right side, that is, the door body 30 needs to be movable toward the right side.

[0059] In some embodiments, a central axis of the first shaft 41 is denoted as a first central axis P, and a central axis of the second shaft 42 is denoted as a second central axis Q.

[0060] In some embodiments, referring to FIG. 3, when the door body 30 is closed, in the projection on the top wall of the refrigerator body 10, the second central axis Q (that is, Q 0 ) is located on the side of the first central axis P (that is, P 0 ) away from the plane where the first body side wall and the access opening are located.

[0061] In some embodiments, when the door body 30 is closed, in the projection on the top wall of the refrigerator body 10, the second central axis Q (that is, Q 0 ) is located on the side of the first central axis P (that is, P 0 ) away from the first body side wall and the access opening, and the included angle between the straight line QP where the second central axis Q and the first central axis P are located and the first body side wall belongs to any value of 60° to 80°. For example, the included angle may be 60°, 70°, 80°, etc. As such, it not only facilitates the opening of the door body 30, but also facilitates limiting the extension ranges of the corresponding guide portion 50 and direction-guiding portion 60, so that the effect of inward rotation of the door body 30 during rotating can be realized within a limited range of the top end of the door body 30.

[0062] It can be understood that, if the included angle between the straight line QP and the first body side wall is less than 60°, then the extension length of the guide portion 50 in the width direction of the door body 30 increases, and at this time, the thickness of the door body also needs to be increased, so that the maximum angle to which the door body 30 can be opened when in the housing cabinet 100 is limited; if the included angle between the straight line QP and the first body side wall is larger than 80°, then the bending angle of the guide portion 50 increases, and there is a possibility that the resistance during the movement of the door body 30 increases, making it inconvenient for the door body 30 to open and close.

[0063] In some embodiments, when the door body 30 is closed, in the projection on the plane where the top wall of the refrigerator body 10 is located, the second central axis Q is located on the side of the first central axis P away from the door side wall 32 and close to the door front wall 31, and the included angle between the straight line QP where the second central axis Q and the first central axis P are located and the door front wall 31 belongs to any value of 10° to 20°. For example, the included angle is 10°, 15°, 20°, or the like. Similarly, this arrangement not only facilitates the opening of the door body 30, but can also limit the extension ranges of the corresponding guide portion 50 and direction-guiding portion 60, thereby facilitating the inward rotation of the door body 30 during rotating.

[0064] In some embodiments, the guide portion 50 is provided as a guide groove, and the direction-guiding portion 60 is provided as a direction-guiding groove. For example, the guide groove is a curved line groove, and the direction-guiding groove is a curved line groove. The guide groove is located on a side of the direction-guiding groove close to the first side edge W.

[0065] In some embodiments, the center trajectory line of the guide portion 50 is denoted as a guide trajectory line S. For example, a trajectory line along which the guide portion 50 guides the relative movement of the first central axis P is a guide trajectory line S. The center trajectory line of the direction-guiding portion 60 is denoted as a direction-guiding trajectory line. For example, a trajectory line along which the direction-guiding portion 60 guides the relative movement of the second central axis Q is a direction-guiding trajectory line K. In a condition that the guide portion 50 is provided as a guide groove, and the direction-guiding portion 60 is provided as a direction-guiding groove, the center trajectory line of the guide groove is denoted as a guide trajectory line S, and the center trajectory line of the direction-guiding groove is denoted as a direction-guiding trajectory line K.

[0066] In some embodiments, in a direction pointing from the end of the door body 30 away from the door side wall 32 towards the door side wall 32, the distance between the guide trajectory line S and the door front wall 31 first increases and then decreases, and the distance between the direction-guiding trajectory line K and the door front wall 31 first increases and then decreases.

[0067] In some embodiments, the guide trajectory line S starts from its side away from the door side wall 32, firstly extends in the direction getting away from the door front wall 31 and getting closer to the door side wall 32, and then extends to its side close to the door front wall 31 and the door side wall 32. The direction-guiding trajectory line K is a curved line, and the direction-guiding trajectory line K starts from its side away from the door side wall 32, extends firstly in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and then extends to its side close to the door front wall 31 and the door side wall 32. The guide trajectory line S is located on a side of the direction-guiding trajectory line K close to the first side edge W.

[0068] For example, the guide trajectory line S includes a first guide segment. The first guide segment starts from its end away from the door side wall 32 and extends in a direction getting closer to the door side wall 32 and getting away from the door front wall 31. The guide trajectory line S further includes a second guide segment. The second guide segment is connected to an end of the first guide segment close to the door side wall 32, and the second guide segment extends from the end of the first guide segment close to the door side wall 32 in a direction getting closer to the door side wall 32 and the door front wall 31.

[0069] The direction-guiding trajectory line K includes a first direction-guiding segment. The first direction-guiding segment starts from its end away from the door side wall 32 and extends in a direction getting closer to the door side wall 32 and getting away from the door front wall 31. The direction-guiding trajectory line K further includes a second direction-guiding segment. The second direction-guiding segment is connected to an end of the first direction-guiding segment close to the door side wall 32, and the second direction-guiding segment extends from the end of the first direction-guiding segment close to the door side wall 32 in a direction getting closer to the door side wall 32 and the door front wall 31.

[0070] In some embodiments, referring to the contents shown in FIG. 3, in a projection on the plane where the top wall of the refrigerator body 10 (the door body 30) is located, the door side wall 32 is taken as Y 1 axis, and the plane passing through the first side edge W and perpendicular to the door side wall 32 is taken as X 1 axis, that is, the plane where the door front wall 31 is located is taken as the X 1 axis (for example, the door front wall 31 is perpendicular to the door side wall 32). The X 1 axis and the Y 1 axis are perpendicular to each other and intersect with each other at the origin O 1 (the first side edge W). The direction pointing from the door front wall 31 to the door rear wall 33 is the positive direction of the Y 1 axis, the direction pointing from the door side wall 32 to the end of the door body 30 that is opposite to the door side wall 32 is the forward direction of the X 1 axis, thereby forming a two-dimensional door body coordinate system X 1 O 1 Y 1 . It is to be noted that, the door body coordinate system X 1 O 1 Y 1 is a two-dimensional coordinate system that is stationary relative to the door body 30.

[0071] In some embodiments, in the door body coordinate system X 1 O 1 Y 1 , the corresponding function of the guide trajectory line S in the coordinate system X 1 O 1 Y 1 is denoted as Y 1 = F(X 1 ); Y 1 = F(X 1 ) is a piecewise function, and this piecewise function is a continuous function; then, at each breakpoint, the left limit is equal to the right limit.

[0072] In some embodiments, in the door body coordinate system X 1 O 1 Y 1 , Y 1 =F (X 1 ) is as follows: Y 1 = F X 1 Y 1 = F 1 X 1 , X 1 ∈ X 10 , X 14 ; Y 1 = F 2 X 1 , X 1 ∈ X 14 , X 18 ;

[0073] In the above, X 10 > X 14 > X 18 > 0; F 1 (X 14 ) = F 2 (X 14 ).

[0074] Y 1 = F 1 (X 1 ) is a function of the first guide segment in the coordinate system X 1 O 1 Y 1 .

[0075] Y 1 = F 2 (X 1 ) is a function of the second guide segment in the coordinate system X 1 O 1 Y 1 .

[0076] In the above, an end point of the first guide segment away from the door side wall 32 is denoted as a starting guide point P 0 , and the connection point between the first guide segment and the second guide segment is denoted as a fourth guide point P 4 . The end of the second guide segment away from the first trajectory segment is denoted as an eighth guide point P 8 . Correspondingly, in the coordinate system X 1 O 1 Y 1 , the coordinates of P 0 are (X 10 , F 1 (X 10 )), the coordinates of P 4 are (X 14 , F 4 (X 14 )), and the coordinates of P 8 are (X 18 , F 2 (X 18 )), and X 10 > X 14 > X 18 > 0.

[0077] In some embodiments, |X 10 -X 14 | : |X 14 -X 18 | > 1. That is, the length of the projection of the first guide segment on the X 1 axis is greater than the length of the projection of the second guide segment on the X 1 axis.

[0078] In some embodiments, referring to FIG. 4, along the direction perpendicular to the door side wall 32, the distance |P 0 P 4 |' between the starting guide point P 0 and the fourth guide point P 4 is greater than the distance |P 4 P 8 |' between the fourth guide point P 4 and the eighth guide point P 8 . That is, |P 0 P 4 |' : |P 4 P 8 |' > 1.

[0079] In some embodiments, the included angle between the straight line P 0 P 4 where the starting guide point P 0 and the fourth guide point P 4 are located and the door front wall 31 is denoted as β 1 , and the included angle between the straight line P 4 P 8 where the fourth guide point P 4 and the eighth guide point Ps are located and the door front wall 31 is denoted as β 2 , then, β 1 < β 2 , and β 1 ∈(0°, 90°), β 2 ∈(0°, 90°).

[0080] In some embodiments, tan β 2 > 1 > tan β 1 > 0.

[0081] In some embodiments, the included angle between the straight line P 0 P 4 where the starting guide point P 0 and the fourth guide point P 4 are located and the door side wall 32 is denoted as β 1 ', and the included angle between the straight line P 4 P 8 where the fourth guide point P 4 and the eighth guide point P 8 are located and the door side wall 32 is denoted as β 2 ', then, β 2 ' < β 1 ', and β 1 '∈(0°, 90°), β 2 '∈(0°, 90°).

[0082] In some embodiments, tan β 1 ' > 1 > tan β 2 ' > 0.

[0083] In some embodiments, when the door body 30 is at the starting angle G 0 , the first central axis P is located at the starting guide point P 0 relative to the door body 30. When the first central axis P moves to the fourth guide point P 4 , the door body 30 is opened to an angle being a fourth angle G 4 . When the first central axis P moves to the eighth guide point P 8 , the angle to which the door body 30 is opened is the eighth angle G 8 (for example, the maximum angle G max to which the door body 30 installed in the housing cabinet 100 can be opened is the eighth angle G 8 ). Then, when the door body 30 is opened from the starting angle G 0 to the fourth angle G 4 , the displacement of the first shaft 41 relative to the door body 30 towards the door side wall 32 is greater than the displacement of the first shaft 41 relative to the door body 30 towards the door side wall 32 when the door body 30 is opened from the fourth angle G 4 to the maximum angle G max = G 8 .

[0084] In some embodiments, the slope of the line where the starting guide point P 0 and the fourth guide point P 4 are located is denoted as F' 1 , and the slope of the line where the fourth guide point P 4 and the eighth guide point P 8 are located is denoted as F' 2 ; then, F' 2 > 0 > F' 1 .

[0085] In some embodiments, F' 2 > 1 > |F' 1 | > 0. That is, the rate of change of the straight line where the two end points of the first guide segment are located is less than the rate of change of the straight line where the two end points of the second guide segment are located.

[0086] In some embodiments, the overall extension trend of the first guide segment is more gradual than the overall extension trend of the second guide segment.

[0087] In some embodiments, F' 1 < 0, and |F' 1 | belongs to any value of 0.25 to 0.35. F' 2 > 0, and F'z belongs to any value of 1.1 to 1.4. That is, the lateral length (in the X-axis direction) of the first guide segment is greater than the longitudinal length (in the Y-axis direction) of the first guide segment, while the lateral length (in the X-axis direction) of the second guide segment is less than the longitudinal length (in the Y-axis direction) of the second guide segment. That is, |X 10 - X 14 | > |F 1 (X 14 ) - F 1 (X 10 )|, and |X 14 - X 18 | < |F 2 (X 18 ) = F 1 (X 14 )|.

[0088] In some embodiments, the second derivative of Y 1 = F(X 1 ) is denoted as F"(X 1 ), then, F"(X 1 ) > 0. That is, Y 1 = F(X 1 ) is a concave function. The guide trajectory line S protrudes toward the side close to the door rear wall 33.

[0089] In some embodiments, in the door body coordinate system X 1 O 1 Y 1 , the corresponding function of the direction-guiding trajectory line K in the coordinate system X 1 O 1 Y 1 is denoted as Y 1 = K(X 1 ), Y 1 = K(X 1 ) is a piecewise function, and this piecewise function is a continuous function. Then at each breakpoint, the left limit is equal to the right limit.

[0090] In some embodiments of the present disclosure, in the door body coordinate system X 1 O 1 Y 1 , Y 1 = K(X 1 ) is as follows: Y 1 = K X 1 Y 1 = K 1 X 1 , X 1 ∈ X 10 ′ , X 16 ′ ; Y 1 = K 2 X 1 , X 1 ∈ X 16 ′ , X 18 ′ ;

[0091] In the above, X 10 ' > X 16 ' > Xis' > 0; K 1 (X 16 ') = K 2 (X 16 ').

[0092] Y 1 = K 1 (X 1 ) is a function of the first direction-guiding segment in the coordinate system X 1 O 1 Y 1 .

[0093] Y 1 = K 2 (X 1 )is a function of the second direction-guiding segment in the coordinate system X 1 O 1 Y 1 .

[0094] In some embodiments, the second derivative of Y 1 = K(X 1 ) is denoted as K" (X 1 ), then, K"(X 1 ) > 0. That is, Y 1 = K(X 1 ) is a concave function. The direction-guiding trajectory line K protrudes toward the side close to the door rear wall 33.

[0095] In some embodiments, the guide trajectory line S includes a starting guide point P 0 , a first guide point P 1 , a second guide point P 2 , a third guide point P 3 , a fourth guide point P 4 , a fifth guide point P 5 , a sixth guide point P 6 , a seventh guide point P 7 , and an eighth guide point P 8 sequentially getting closer to the door side wall 32.

[0096] In some embodiments, the fourth guide point P 4 is a point of the guide trajectory line S having the largest distance from the door front wall 31.

[0097] In some embodiments, the guide trajectory line S extends from the starting guide point P 0 at its end away from the door side wall 32 to the eighth guide point P 8 at its end close to the door side wall 32.

[0098] In some embodiments, the guide trajectory line S starts from the starting guide point P 0 , firstly extends in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and successively passes through the first guide point P 1 , the second guide point P 2 , and the third guide point P 3 , and extends to the fourth guide point P 4 , and then it extends from the fourth guide point P 4 in a direction getting closer to the door side wall 32 and the door front wall 31, and successively passes through the fifth guide point P 5 , the sixth guide point P 6 , and the seventh guide point P 7 , and finally extends to the eighth guide point P 8 .

[0099] In some embodiments, the guide trajectory line S starts from the starting guide point P 0 , firstly extends in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and successively passes through the first guide point P 1 , the second guide point P 2 , and the third guide point P 3 , and extends to the fourth guide point P 4 , along a curved line, and then it extends from the fourth guide point P 4 in a direction getting closer to the door side wall 32 and the door front wall 31, and successively passes through the fifth guide point P 5 , the sixth guide point P 6 , the seventh guide point P 7 , and finally extends to the eighth guide point P 8 , along a curved line.

[0100] In some embodiments, the direction-guiding trajectory line K includes a starting direction-guiding point Q 0 , a first direction-guiding point Q 1 , a second direction-guiding point Q 2 , a third direction-guiding point Q 3 , a fourth direction-guiding point Q 4 , a fifth direction-guiding point Q 5 , a sixth direction-guiding point Q 6 , a seventh direction-guiding point Q 7 , and an eighth direction-guiding point Q 8 , which are sequentially getting closer to the door side wall 32 in this order.

[0101] In some embodiments, in the direction pointing from the end of the door body 30 away from the door side wall 32 to the door side wall 32, the distance between the direction-guiding trajectory line K and the door front wall 31 first increases and then decreases. For example, the sixth direction-guiding point Q 6 has the largest distance from the door front wall 31.

[0102] In some embodiments, the direction-guiding trajectory line K starts from the starting direction-guiding point Q 0 , firstly extends in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and successively passes through the first direction-guiding point Q 1 , the second direction-guiding point Q 2 , the third direction-guiding point Q 3 , the fourth direction-guiding point Q 4 , and the fifth direction-guiding point Q 5 , and extends to the sixth direction-guiding point Q 6 , along a curved line, and then it extends from the sixth direction-guiding point Q 6 to the eighth direction-guiding point Q 8 , along a curved line in a direction getting closer to the door side wall 32 and the door front wall 31.

[0103] In some embodiments, referring to FIG. 5, the point on the guide trajectory line S having the largest distance from the door front wall 31 is the fourth guide point P 4 , and the point on the direction-guiding trajectory line K having the largest distance from the door front wall 31 is the sixth direction-guiding point Q 6 . The included angle between the straight line P 4 Q 6 where the fourth guide point P 4 and the sixth direction-guiding point Q 6 are located and the door front wall 31 is denoted as a first included angle σ 1 .

[0104] It should be noted that, the range of the included angle between the line and the plane is from 0° to 90°. With respect to the door front wall 31, the straight line P 4 Q 6 can be set to extend from its end close to the door front wall 31 towards the side close to the door rear wall 33 and the door side wall 32 (as shown in FIG. 5, the first included angle σ 1 ). The straight line P 4 Q 6 can also be set to extend from its end close to the door front wall 31 towards the side close to the door rear wall 33 and away from the door side wall 32. The first included angle σ 1 is the non-obtuse angle value of the included angle between the straight line P 4 Q 6 and the door front wall 31.

[0105] It can be understood that the included angle between the line and the surface is in a range of 0° to 90°. If the first included angle σ 1 is too small, on the premise that the door body 30 moves inward, the guide portion 50 and the direction-guiding portion 60 may overlap, leading to a decrease in the smoothnesses of the guide portion 50 and the direction-guiding portion 60, which is not conducive to the movements of the first shaft 41 and the second shaft 42. In addition, the first shaft 41 and the second shaft 42 may get stuck at the overlapping portion, thereby reducing the reliability of the hinge assembly.

[0106] In some embodiments, the first included angle σ 1 belongs to any value of 85° to 90°. For example, σ 1 may be 85° , 86° , 87°, 88° , 89° , 90°, etc. In this way, the first angle σ1 is set at about 90°, which is conducive to the configurations of the guide portion 50 and the direction-guiding portion 60, and avoids an overlap from occurring between the direction-guiding portion 60 between Q 6 and Q 8 , and the guide portion 50 between P 4 and P 8 , thereby improving the smoothnesses and reliabilities of the movements of the first shaft 41 relative to the guide portion 50 and the second shaft 42 relative to the direction-guiding portion 60. As a result, the door body 30 can smoothly move inward (towards the side away from the first body side wall) and forward (towards the side away from the refrigerator body 10) during the subsequent opening process. In some embodiments, the straight line P 4 Q 6 where the fourth guide point P 4 and the sixth direction-guiding point Q 6 are located is approximately perpendicular to the door front wall 31. The first included angle σ 1 belongs to any value of 89° to 90°.

[0107] In some embodiments, the included angle between the straight line P 4 Q 6 where the fourth guide point P 4 and the sixth direction-guiding point Q 6 are located and the door side wall 32 is denoted as a fourth included angle σ 4 . Then, the fourth included angle σ 4 belongs to any value of 0° to 5°. For example, σ 4 may be 0°, 1°, 2°, 3°, 4°, 5°, etc. As above, this arrangement is conducive to avoiding an overlap between the guide portion 50 and the direction-guiding portion 60 on the premise of controlling the door body 30 to move inward and forward, thereby improving the reliability of the hinge assembly.

[0108] In some embodiments, the straight line P 4 Q 6 where the fourth guide point P 4 and the sixth direction-guiding point Q 6 are located is approximately parallel to the door side wall 32, and the fourth included angle σ 4 belongs to any value of 0° to 1°.

[0109] Same as above, since the included angle between the line and the plane is in a range of 0° to 90°, with respect to the door side wall 32, the straight line P 4 Q 6 can be set to extend from its end close to the door front wall 31 towards a side close to the door rear wall 33 and the door side wall 32, and the straight line P 4 Q 6 can also be set to extend from its end close to the door front wall 31 towards a side close to the door rear wall 33 and away from the door side wall 32. Therefore, the fourth included angle σ 4 is the non-obtuse angle value of the included angle between the straight line P 4 Q 6 and the door side wall 32.

[0110] In some embodiments, the included angle (a first included angle σ 1 ) between the straight line P 4 Q 6 and the door front wall 31 is an included angle between a line and a plane, and the included angle (a fourth included angle σ 4 ) between the straight line P 4 Q 6 and the door side wall 32 also belongs to an included angle between a line and a plane, while the included angle between a line and a plane is in a range of 0° to 90°.

[0111] In summary, the limitations on the first angle σ1 and the fourth angle σ4 further defines the relative positions of the guide trajectory line S and the direction-guiding trajectory line K, whose distances to the door front wall 31 first increase and then decrease. This, in turn, limits the movement tendencies of the first shaft 41 and the second shaft 42 relative to the first body side wall and the access opening during the opening of the door body 30, and ensures that the first shaft 41 and the second shaft 42 have movement tendencies to approach the first body side wall and the access opening throughout the process, thereby enabling the door body 30 to have a movement tendency to get closer to the second body side wall and get away from the plane where the access opening is located throughout the process, so as to achieve the inward and forward movement of the door body 30 throughout the process.

[0112] In some embodiments, the starting guide point P 0 corresponds to the position of the first central axis P relative to the guide trajectory line S when the door body 30 is at the starting angle G 0 . The eighth guide point P 8 corresponds to the position of the first central axis P relative to the guide trajectory line S when the door body 30 is opened to the eighth angle G 8 .

[0113] In some embodiments, the starting direction-guiding point Q 0 corresponds to the position of the second central axis Q relative to the direction-guiding trajectory line K when the door body 30 is at the starting angle G 0 . The eighth direction-guiding point Q 8 corresponds to the position of the second central axis Q relative to the direction-guiding trajectory line K when the door body 30 is opened to the eighth angle G 8 .

[0114] In some embodiments, the starting guide point P 0 and the eighth guide point P 8 are respectively the opposite two end points of the guide trajectory line S.

[0115] In some embodiments, the starting direction-guiding point Q 0 and the eighth direction-guiding point Q 8 are respectively the opposite two end points of the direction-guiding trajectory line K.

[0116] In some embodiments, when designing the second hinge member, in order to avoid excessive movement of the door body 30 toward the inside of the refrigerator body 10 due to excessive force applied by the user when closing the door body 30, an extended segment is provided at one end of the guide trajectory line S or the direction-guiding trajectory line K close to the door front wall 31 to reserve space for the above situation. Similarly, in order to avoid excessive movement (factors such as deformation by force or the like) of the door body 30 toward the refrigerator body 10 due to excessive force applied when the user opens the door body 30 to the maximum angle G max , an extended segment is provided at one end of the guide trajectory line S away from the door front wall 31 or at one end of the direction-guiding trajectory line K close to the door side wall 32 to reserve space for the above situation.

[0117] It can be understood that in a case where a space is reserved in at least one of the two ends of the direction-guiding portion 60 or the guide portion 50 as described above, the starting guide point P 0 , the starting direction-guiding point Q 0 , the eighth guide point P 8 , and the eighth direction-guiding point Q 8 are not the endpoints of the respective trajectory lines where they are located. That is, the configuration in which the starting guide point P 0 , the starting direction-guiding point Q 0 , the eighth guide point P 8 , and the eighth direction-guiding point Q 8 are the endpoints of the respective trajectory lines where they are located is merely one implementable way. The starting guide point P 0 , the starting direction-guiding point Q 0 , the eighth guide point P 8 , and the eighth direction-guiding point Q 8 essentially correspond to the positions of the two hinge axes in the two states when the door body 30 is at the starting angle G 0 or is opened to the maximum angle (such as the eighth angle G 8 ), and are not restricted by the endpoints of the respective trajectory lines where they are located.

[0118] In a case where the above starting guide point P 0 and the eighth guide point P 8 are not the opposite two endpoints of the guide trajectory line S, at least one of the starting guide point P 0 or the eighth guide point P 8 may be set as a point at an intermediate position on the guide trajectory line S, rather than an endpoint of the guide trajectory line S.

[0119] In a case where the above starting direction-guiding point Q 0 and the eighth direction-guiding point Q 8 are not the opposite two endpoints of the direction-guiding trajectory line K, at least one of the starting direction-guiding point Q 0 or the eighth direction-guiding point Q 8 may be set as a point at an intermediate position on the direction-guiding trajectory line K, rather than an endpoint of the direction-guiding trajectory line K.

[0120] In some embodiments, the starting guide point P 0 is located at a side of the starting direction-guiding point Q 0 close to the door rear wall 33 and the door side wall 32, and the eighth guide point P 8 is located at a side of the starting direction-guiding point Q 0 close to the door front wall 31 and the door side wall 32.

[0121] In some embodiments, the eighth direction-guiding point Q 8 is located at the side of the eighth guide point P 8 close to the door rear wall 33 and the door side wall 32.

[0122] In some embodiments, referring to FIG. 3, in the direction along the normal line (X-axis) of the door side wall 32, the distance between the starting direction-guiding point Q 0 and the eighth direction-guiding point Q 8 is denoted as a first lateral distance Ei, and the distance between the eighth guide point P 8 and the eighth direction-guiding point Q 8 is denoted as a second lateral distance E 2 . For example, the first lateral distance E 1 belongs to any value of 25 mm to 30 mm, and the second lateral distance E 2 belongs to any value of 2 mm to 4 mm.

[0123] In some embodiments, in a direction along the normal line (Y-axis) of the door front wall 31, the distance between the eighth guide point P 8 and the eighth direction-guiding point Q 8 along the normal direction of the door front wall 31 is denoted as a first longitudinal distance D 1 . The distance between the sixth direction-guiding point Q 6 and the eighth direction-guiding point Q 8 along the normal direction of the door front wall 31 is denoted as a second longitudinal distance D 2 . The distance between the starting direction-guiding point Q 0 and the eighth guide point P 8 along the normal direction of the door front wall 31 is denoted as a third longitudinal distance D 3 .

[0124] For example, the first longitudinal distance D 1 belongs to any value of 10 mm to 14 mm, the second longitudinal distance D 2 belongs to any value of 3 mm to 4 mm, and the third longitudinal distance D 3 belongs to any value of 0 mm to 1 mm.

[0125] In some embodiments, the guide trajectory line S and the direction-guiding trajectory line K are defined within a rectangular frame having a lateral length of 25 mm to 30 mm and a longitudinal length of 13 mm to 18 mm. The outer contour dimensions of the guide portion 50 (guide groove) and the direction-guiding portion 60 (direction-guiding groove) are set according to the diameter dimensions of the first shaft 41 and the second shaft 42, and the guide portion 50 and the direction-guiding portion 60 can be defined within a rectangular frame having a lateral length of 35 mm to 40 mm and a longitudinal length of 23 mm to 28 mm. With the above configurations, the arrangement of the guide portion 50 and the direction-guiding portion 60 is more compact, thereby reducing the occupied area of the guide portion 50 and the direction-guiding portion 60. In this way, the dimension of the door body 30 in the direction perpendicular to the door side wall 32 (X-axis) can be fully utilized, and the dimension of the door body 30 in the direction perpendicular to the door front wall 31 (Y-axis) is reduced, thereby reducing the occupation of the thickness dimension of the door body 30 by the guide portion 50 and the direction-guiding portion 60, so that the same configurations can be applied even when the door body 30 is thinned.

[0126] In some embodiments, referring to FIG. 6, when the door body 30 is in the closed state, the distance (gap) between the door side wall 32 and the housing cabinet 100 is denoted as Li, then, L 1 is less than or equal to 3 mm.

[0127] In some embodiments, the thickness of the door body 30 in a direction perpendicular to the door front wall 31 is L 2 . L 1 :L 2 may belong to any value of 0.07 to 0.11. By defining the relationship between the thickness of the door body 30 and the distance between the door side wall 32 and the inner wall of the housing cabinet 100 as above, so that the door body 30 can be smoothly opened under the driving of the hinge assembly of the present disclosure, and the situation where when the door body 30 is to be opened, the first side edge W collides with the inner wall of the housing cabinet 100 so that the door body 30 cannot be opened is avoided.

[0128] In some embodiments, referring to FIG. 6, the distance α' between the body side wall of the refrigerator installed in the housing cabinet 100 and the inner wall of the housing cabinet 100 is greater than the distance between the door side wall 32 and the inner wall of the housing cabinet 100 when the door body 30 is in the closed state; that is, α' > L 1 . In this way, when the above door body 30 is in the closed state, the door body 30 can shield the refrigerator body of the refrigerator, and prevent the side wall of the refrigerator body of the refrigerator from bulging due to foaming and affecting the aesthetic appearance.

[0129] In some embodiments, the second shaft 42 is located at the side of the first shaft 41 away from the second side edge N, and the direction-guiding portion 60 is located at a side of the guide portion 50 away from the first side edge W. The first shaft 41 moves, relative to the guide portion 50, firstly towards a side away from the door front wall 31 and close to the door side wall 32, and then towards a side close to the door front wall 31 and the door side wall 32. The second shaft 42 moves firstly towards a side away from the door front wall 31 and close to the door side wall 32, and then towards the side close to the door front wall 31 and the door side wall 32, so that the door body 30 can move inward (in the direction getting closer to the second body side wall) for a certain distance as the door body 30 rotates, so as to compensate for the distance that the first side edge W moves outward due to the simple rotational movement of the door body 30, so as to restrict the distance of the first side edge W going beyond the first body side wall to be within the range of the gap between the housing cabinet 100 and the first body side wall, and avoid the situation where the first side edge W collides with the housing cabinet so that the door body 30 cannot be opened.

[0130] In some embodiments, the distance between the first central axis P and the door front wall 31 when the door body 30 is in the closed state is equal to the distance between the first central axis P and the door front wall 31 when the door body 30 is opened to 90°.

[0131] For example, the distance between the starting guide point P 0 of the guide trajectory line S and the door front wall 31 is equal to the distance between the seventh guide point P 7 and the door front wall 31.

[0132] In some embodiments, the straight line P 0 P 7 where the starting guide point P 0 and the seventh guide point P 7 on the guide trajectory line S are located is parallel to the door front wall 31.

[0133] In some embodiments, when the door body 30 is in the closed state, the straight line P 0 P 7 where the starting guide point P 0 and the seventh guide point P 7 of the guide trajectory line S are located is parallel to the plane where the access opening is located.

[0134] In some embodiments, the straight line P 0 P 7 where the starting guide point P 0 and the seventh guide point P 7 of the guide trajectory line S are located is perpendicular to the first body side wall.

[0135] When the door body 30 is at the starting angle G 0 , the first central axis P is located at the starting guide point P 0 . When the door body 30 is at the seventh angle G 7 , the first central axis P is located at the seventh guide point P 7 . For example, G 7 > G 0 .

[0136] In some embodiments, the difference between the seventh angle G 7 and the starting angle G 0 is denoted as G 7 - G 0 , and G 7 - G 0 = 90°.

[0137] In some embodiments, when the door body 30 is at the starting angle G 0 , the door body 30 is in the closed state. G 0 = 0°.

[0138] Since there is a relative movement relationship between the guide portion 50 and the first shaft 41, and there is a relative movement relationship between the direction-guiding portion 60 and the second shaft 42, if the guide portion 50 and the direction-guiding portion 60 are regarded as stationary reference objects during the opening of the door body 30, then it is equivalent to that the first shaft 41 is moved under the restriction by the guide portion 50, and the second shaft 42 is moved under the restriction by the direction-guiding portion 60. For convenience of description, some embodiments of the present disclosure will be described in a manner where the guide portion 50 and the direction-guiding portion 60 are stationary reference objects, and the first shaft 41 and the second shaft 42 move relative to the reference objects.

[0139] In some embodiments, in a projection on the plane where the top wall of the refrigerator body 10 is located, the line segment PQ is denoted as an axial line segment PQ, and the center of the axial line segment PQ is denoted as an axial midpoint I. Referring to FIGS. 6 to 24, the movement of the first shaft 41 along the guide portion 50 is equivalent to the movement of the first central axis P along the guide trajectory line S, and the movement of the second shaft 42 along the direction-guiding portion 60 is equivalent to the movement of the second central axis Q along the direction-guiding trajectory line K. The movements of the first shaft 41 and the second shaft 42 enable the door body 30 to move inward (in the direction getting closer to the second body side wall) by a distance as the door body 30 rotates, so as to avoid the door body 30 from interfering with the housing cabinet 100, thereby ensuring that the door body 30 can be fully opened.

[0140] Under the above settings, during the process of opening the door body 30 from the starting angle G 0 to the eighth angle G 8 , the first shaft 41 moves relative to the guide portion 50 throughout the process, the second shaft 42 moves relative to the direction-guiding portion 60 throughout the process, and the door body 30 rotates around the point (the axial midpoint I) that is dynamically changing relative to the door body 30 throughout the process. Under the above settings, during the process of opening the door body 30 from the starting angle G 0 to the eighth angle G 8 , the first central axis P moves relative to the guide trajectory line S, and the second central axis Q moves relative to the direction-guiding trajectory line K, thereby driving the door body 30 to rotate with the axial midpoint I as the instantaneous rotation center. The position of the axial midpoint I relative to the door body 30 is constantly changing, so that the position of the instantaneous rotation center of the door body 30 is constantly changing.

[0141] It is to be noted that, being different from the above settings, the instantaneous rotation central axis of the rotational movement only using the central axis of the first shaft 41 as the rotation axis is the first central axis P, rather than the axial midpoint I.

[0142] The movement of the door body 30 relative to the refrigerator body 10 can be regarded as the relative movement of the door body 30 and the refrigerator body 10 within the plane where the top wall of the refrigerator body 10 is located (or within a plane parallel to the top wall of the refrigerator body 10). That is, the movement of the door body 30 relative to the refrigerator body 10 can be regarded as a relative movement in a two-dimensional plane. Since the first hinge member including the first shaft 41 and the second shaft 42 is fixed to the refrigerator body 10, and the second hinge member including the direction-guiding portion 60 and the guide portion 50 is located at the door body 30, within the plane where the top wall of the refrigerator body 10 is located, the movement of the first hinge member (the axial line segment PQ) relative to the door body 30 (the direction-guiding portion 60 and the guide portion 50) is equivalent to the movement of the axial line segment PQ relative to the door body 30, and is also equivalent to the movement of the refrigerator body 10 relative to the door body 30.

[0143] In the following descriptions, for convenience of description, the movement of the axial line segment PQ relative to the second hinge member (the direction-guiding portion 60 and the guide portion 50) provided on the door body 30 within the plane where the top wall of the refrigerator body 10 is located is selected to represent the movement of the refrigerator body 10 relative to the door body 30. That is, the description with respect to relative movement in some embodiments of the present disclosure is described in terms of relative movement within a two-dimensional plane.

[0144] Referring to FIG. 6, in some embodiments, when the door body 30 is at the starting angle G 0 , the first central axis P is located at the starting guide point P 0 of the guide trajectory line S, and the second central axis Q is located at the starting direction-guiding point Q 0 of the direction-guiding trajectory line K. That is, when the door body 30 is at the starting angle G 0 , the first shaft 41 is located at one end of the guide portion 50 away from the door side wall 32, and the second shaft 42 is located at one end of the direction-guiding portion 60 away from the door side wall 32, and the second shaft 42 is located at the side of the first shaft 41 close to the door front wall 31 and away from the door side wall 32.

[0145] In some embodiments, when the door body 30 is at the starting angle G 0 , both the first shaft 41 and the second shaft 42 are closer to the door front wall 31 compared to the door rear wall 33. That is, when the door body 30 is at the starting angle G 0 , both the first shaft 41 and the second shaft 42 are located on the side of the midplane C close to the door front wall 31.

[0146] In some embodiments, referring to FIGS. 6 to 24, the operation situations of the first shaft 41 and the second shaft 42 are described using an example in which the refrigerator is opened to the eighth angle G 8 > 90° (G max = G 8 ) according to the above limitations of the guide portion 50 and the first shaft 41 and the limitations of the direction-guiding portion 60 and the second shaft 42. For example, during the process of opening the door body 30 from the starting angle G 0 to the eighth angle G 8 , when the door body 30 is rotated and opened to a specific angle, the relative position of the first shaft 41 relative to the guide portion 50 and the relative position of the second shaft 42 relative to the direction-guiding portion 60 are as follows.

[0147] In the following description, φ represents an opening angle of the door body 30. When the door body 30 is in the closed state, the opening angle of the door body 30 is denoted as a closed angle G G .

[0148] In some embodiments, G G = 0°.

[0149] The opening angle φ is a positive value when the door body 30 is opened relative to the refrigerator body 10 to open the access opening. When the door body 30 continues to move from the closed state (φ = 0°) along the closing direction and further squeezes the door seal strip, the door body 30 is opened to an angle having a negative value.

[0150] In some embodiments, when the door body 30 is in the closed state (φ = 0°), the door front wall 31 is parallel to the plane where the access opening is located.

[0151] In some embodiments, when the door body 30 is in the closed state (φ = 0°), the door side wall 32 is perpendicular to the plane where the access opening is located.

[0152] In some embodiments, when the door body 30 is in the closed state (φ = 0°), the door rear wall 33 is parallel to the plane where the access opening is located.

[0153] Referring to FIGS. 2 and 6, when φ = G 0 , the first central axis P is located at the starting guide point P 0 of the guide trajectory line S, the second central axis Q is located at the starting direction-guiding point Q 0 of the direction-guiding trajectory line K, and the axial midpoint I is located at the starting midpoint I 0 with respect to the door body 30.

[0154] Referring to FIGS. 7 to 10, when φ∈(G 0 , G 4 ], the door body 30 is rotated to open from the starting angle G 0 to the fourth angle G 4 . In this process, the first central axis P moves along the guide trajectory line S in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and the second central axis Q moves along the direction-guiding trajectory line K in a direction getting away from the door front wall 31 and getting closer to the door side wall 32.

[0155] In some embodiments, during the process of rotating the door body 30 to open from the starting angle G 0 to the fourth angle G 4 , the first central axis P performs a curvilinear movement along the guide trajectory line S in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and the second central axis Q performs a curvilinear movement along the direction-guiding trajectory line K in a direction getting away from the door front wall 31 and getting closer to the door side wall 32.

[0156] In the above, when the opening angle φ of the door body 30 ∈ (G 0 , G 4 ], the movement tendencies of the first central axis P and the second central axis Q remain consistent with each other within this opening angle interval. The only distinction between them is that, under different opening angles of the door body 30, the position of the first central axis P with respect to the guide trajectory line S is different, and the position of the second central axis Q with respect to the direction-guiding trajectory line K is different. As such, when the opening angle φ∈(G 0 , G 4 ), any opening angle selected from the above opening angle interval can represent relative positions between the first shaft 41 and the guide portion 50 and between the second shaft 42 and the direction-guiding portion 60 when the door body 30 is opened to a corresponding angle. Referring to FIGS. 7 to 9, taking φ = G 1 or G 2 or G 3 as an example, the positions of the first central axis P and the second central axis Q within the opening angle interval will be described. 0° ≤ G 0 < G 1 < G 2 < G 3 < G 4 .

[0157] For example, when the door body 30 is opened to G 1 or G 2 or G 3 , the positional relationship between the first central axis P with respect to the guide trajectory line S and the second central axis Q with respect to the direction-guiding trajectory line K is as follows.

[0158] Referring to FIG. 7, when φ = G 1 , the door body 30 is rotated open to G 1 . The first central axis P is located at the first guide point P 1 of the guide trajectory line S, and the first guide point P 1 is located at the side of the starting guide point P 0 close to the door side wall 32 and the door rear wall 33. The second central axis Q is located at the first direction-guiding point Q 1 of the direction-guiding trajectory line K, and the first direction-guiding point Q 1 is located at the side of the starting direction-guiding point Q 0 close to the door side wall 32 and the door rear wall 33. Relative to the door body 30, the axial midpoint I moves to the first midpoint I 1 along with the axial line segment PQ, and the first midpoint I 1 is located at the side of the starting midpoint I 0 close to the door side wall 32 and the door rear wall 33.

[0159] Referring to FIG. 7, when φ = G 2 , the door body 30 is rotated open to G 2 . The first central axis P is located at the second guide point P 2 of the guide trajectory line S, and the second guide point P 2 is located at the side of the first guide point P 1 close to the door side wall 32 and the door rear wall 33. The second central axis Q is located at the second direction-guiding point Q 2 of the direction-guiding trajectory line K, and the second direction-guiding point Q 2 is located at the side of the first direction-guiding point Q 1 close to the door side wall 32 and the door rear wall 33. Relative to the door body 30, the axial midpoint I moves to the second midpoint I 2 along with the axial line segment PQ, and the second midpoint I 2 is located at the side of the first midpoint I 1 close to the door side wall 32 and the door rear wall 33. For example, G 2 ∈any value of [16°, 25°]. For example, G 2 may be 16°, 18°, 20°, 22°, 25°, etc.

[0160] Referring to FIG. 8, when φ = G 3 , the door body 30 is rotated open to G 3 . The first central axis P is located at the third guide point P 3 of the guide trajectory line S, and the third guide point P 3 is located at the side of the second guide point P 2 close to the door side wall 32 and the door rear wall 33. The second central axis Q is located at the third direction-guiding point Q 3 of the direction-guiding trajectory line K, and the third direction-guiding point Q 3 is located at the side of the second direction-guiding point Q 2 close to the door side wall 32 and the door rear wall 33. Relative to the door body 30, the axial midpoint I moves to the third midpoint I 3 along with the axial line segment PQ, and the third midpoint I 3 is located at the side of the second midpoint I 2 close to the door side wall 32 and the door rear wall 33.

[0161] Referring to FIG. 9, when φ = G 4 , the door body 30 is rotated open to G 4 . The first central axis P is located at the fourth guide point P 4 of the guide trajectory line S, and the fourth guide point P 4 is located at the side of the third direction-guiding point Q 3 close to the door side wall 32 and the door rear wall 33. At this time, the first central axis P is located at a point on the guide trajectory line S where the distance from the door front wall 31 is the largest. The second central axis Q is located at the fourth direction-guiding point Q 4 of the direction-guiding trajectory line K, and the fourth direction-guiding point Q 4 is located at the side of the third direction-guiding point Q 3 close to the door side wall 32 and the door rear wall 33. Relative to the door body 30, the axial midpoint I moves to the fourth midpoint I 4 along with the axial line segment PQ, and the fourth midpoint I 4 is located at the side of the third midpoint I 3 close to the door side wall 32 and the door rear wall 33. For example, G 4 ∈any value of [38°, 47°]. For example, G 4 may be 38°, 40°, 42°, 44°, 47°, etc.

[0162] In some embodiments, during the process of rotating the door body 30 to open from the starting angle G 0 to the second angle G 2 , the first central axis P performs a linear movement along the guide trajectory line S in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and the second central axis Q performs a curvilinear movement along the direction-guiding trajectory line K in a direction getting away from the door front wall 31 and getting closer to the door side wall 32.

[0163] During the process of rotating the door body 30 to open from the second angle G 2 to the fourth angle G 4 , the first central axis P performs a curvilinear movement along the guide trajectory line S in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and the second central axis Q performs a curvilinear movement along the direction-guiding trajectory line K in a direction getting away from the door front wall 31 and getting closer to the door side wall 32.

[0164] When the door body 30 is opened to the second angle G 2 , the first central axis P moves to a transition point (the second guide point P 2 ) at which the linear movement transitions to the curvilinear movement.

[0165] Referring to FIG. 11, when φ∈(G 4 , G 6 ], the door body 30 is rotated to open from G 4 to G 6 . In this process, the first central axis P performs a curvilinear movement along the guide trajectory line S in a direction getting closer to the door front wall 31 and the door side wall 32, and the second central axis Q performs a curvilinear movement along the direction-guiding trajectory line K in a direction getting away from the door front wall 31 and getting closer to the door side wall 32.

[0166] In the above, when the opening angle φ of the door body 30∈(G 4 , G 6 ], the movement tendencies of the first central axis P and the second central axis Q remain consistent with each other within this opening angle interval. The distinction between the two is that, under different opening angles of the door body 30, the position of the first central axis P with respect to the guide trajectory line S is different, and the position of the second central axis Q with respect to the direction-guiding trajectory line K is different. As such, when the opening angle φ∈(G 4 , G 6 ), any opening angle selected from the above opening angle interval can represent relative positions between the first shaft 41 and the guide portion 50 and between the second shaft 42 and the direction-guiding portion 60 when the door body 30 is opened to a corresponding angle.

[0167] Referring to FIG. 11, taking φ = G 5 or G 6 as an example, the positions of the first central axis P and the second central axis Q within the opening angle interval will be described. G 4 < G 5 < G 6 .

[0168] For example, when the door body 30 is opened to G 5 , the positional relationship between the first central axis P with respect to the guide trajectory line S and the second central axis Q with respect to the direction-guiding trajectory line K is as follows.

[0169] Referring to FIGS. 11 and 21, when φ = G 5 , the door body 30 is rotated open to G 5 . The first central axis P is located at the fifth guide point P 5 of the guide trajectory line S, and the fifth guide point P 5 is located at the side of the fourth guide point P 4 close to the door front wall 31 and the door side wall 32. The second central axis Q is located at the fifth direction-guiding point Q 5 of the direction-guiding trajectory line K, and the fifth direction-guiding point Q 5 is located at the side of the fourth direction-guiding point Q 4 away from the door front wall 31 and close to the door side wall 32. Relative to the door body 30, the axial midpoint I moves to the fifth midpoint I 5 along with the axial line segment PQ, and the fifth midpoint I 5 is located at the side of the fourth midpoint I 4 close to the door side wall 32 and the door rear wall 33.

[0170] Referring to FIGS. 12 and 22, when φ = G 6 , the door body 30 is rotated open to G 6 . The first central axis P is located at the sixth guide point P 6 of the guide trajectory line S, and the sixth guide point P 6 is located at the side of the fifth guide point P 5 close to the door front wall 31 and the door side wall 32. The second central axis Q is located at the sixth direction-guiding point Q 6 of the direction-guiding trajectory line K, and the sixth direction-guiding point Q 6 is located at the side of the fifth direction-guiding point Q 5 away from the door front wall 31 and close to the door side wall 32. The second central axis Q is located at a position on the direction-guiding trajectory line K where the distance from the door front wall 31 is the largest. Relative to the door body 30, the axial midpoint I moves to the sixth midpoint I 6 along with the axial line segment PQ, and the sixth midpoint I 6 is located at the side of the fifth midpoint I 6 close to the door side wall 32 and the door front wall 31. For example, G 6 ∈any value of [86°, 90°]. For example, G 6 may be 86°, 87°, 88°, 89°, 90°, etc.

[0171] Referring to FIG. 13, when φ∈(G 6 , G 8 ], the door body 30 is rotated to open from G 6 to G 8 . In this process, the first central axis P performs a curvilinear movement along the guide trajectory line S in a direction getting closer to the door front wall 31 and the door side wall 32, and the second central axis Q performs a curvilinear movement along the direction-guiding trajectory line K in a direction getting closer to the door front wall 31 and the door side wall 32.

[0172] In the above, when the opening angle φ of the door body 30∈(G 6 , G 8 ], the movement tendencies remain consistent with each other within this opening angle interval. The only distinction between them is that, under different opening angles, the position of the first central axis P with respect to the guide trajectory line S is different, and the position of the second central axis Q with respect to the direction-guiding trajectory line K is different. As such, when the opening angle φ∈(G 6 , G 8 ], any opening angle selected from the above opening angle interval can represent relative positions between the first shaft 41 and the guide portion 50 and between the second shaft 42 and the direction-guiding portion 60 when the door body 30 is opened to a corresponding interval. Referring to FIG. 13, taking φ = G 7 or G 8 as an example, the positions of the first central axis P and the second central axis Q within the opening angle interval will be described. For example, G 6 < G 7 < G 8 .

[0173] For example, when the door body 30 is opened to G 5 , the positional relationship between the first central axis P with respect to the guide trajectory line S and the second central axis Q with respect to the direction-guiding trajectory line K is as follows.

[0174] Referring to FIGS. 13 and 23, when φ = G 7 , the door body 30 is rotated open to G 7 . The first central axis P is located at the seventh guide point P 7 of the guide trajectory line S, and the seventh guide point P 7 is located at the side of the sixth guide point P 6 close to the door front wall 31 and the door side wall 32. The second central axis Q is located at the seventh direction-guiding point Q 7 of the direction-guiding trajectory line K, and the seventh direction-guiding point Q 7 is located at the side of the sixth direction-guiding point Q 6 (the point on the direction-guiding trajectory line K where the distance from the door front wall 31 is the largest) close to the door front wall 31 and the door side wall 32. Relative to the door body 30, the axial midpoint I moves to the seventh midpoint I 7 along with the axial line segment PQ, and the seventh midpoint I 7 is located at the side of the sixth midpoint I 6 close to the door side wall 32 and the door front wall 31.

[0175] In some embodiments, φ = G 7 = 90°.

[0176] In some embodiments, when φ = G 7 = 90°, the seventh direction-guiding point Q 7 is located at the side of the seventh guide point P 7 away from the door front wall 31 and the door side wall 32, and the seventh direction-guiding point Q 7 is located at the side of the sixth direction-guiding point Q 6 close to the door front wall 31 and the door side wall 32.

[0177] In some other embodiments, when φ = G 7 = 90°, the first central axis P is located at the sixth guide point P 6 , and the second central axis Q is located at the sixth direction-guiding point Q 6 .

[0178] In some embodiments, when the door body 30 is opened to 90°, the door front wall 31 of the door body 30 is located at the inner side of the first body side wall of the refrigerator body 10.

[0179] In some embodiments, when the door body 30 is opened to 90°, the door front wall 31 of the door body 30 is located at the inner side of the first body side wall of the refrigerator body 10, and the distance between the door front wall 31 and the first body side wall is L 3 , and L 3 belongs to any value between 4 mm to 6 mm. For example, L3 is 4 mm, 5 mm, 6 mm, etc.

[0180] It can be understood that if L3 is less than 4 mm, then when the door body 30 continues to be opened from 90°, it will be restricted by the housing cabinet 100. If L3 is greater than 6 mm, then when the door body 30 is opened to 90°, the distance between the door front wall 31 of the door body 30 and the first body side wall of the refrigerator body 10 will increase, resulting in the obstruction by the door body 30 to the access opening.

[0181] In the above, the L 3 is limited between 4 mm to 6 mm, which allows the door body 30 to be positioned at the inner side of the first body side wall when the door body 30 is opened to 90°, which increases the distance between the door front wall 31 and the inner wall of the housing cabinet 100. In this way, the restriction by the housing cabinet 100 on the continued opening of the door body 30 from 90° to the limit angle is reduced. In addition, under the condition in which the limit angle to which the door body 30 of the refrigerator placed in the housing cabinet 100 can be opened is increased, the above settings can also reduce the obstruction on the access opening when the door body 30 is opened to 90°.

[0182] Referring to FIGS. 14 and 24, when φ = G max = G 8 , the door body 30 is rotated open to G 8 . The first central axis P is located at the eighth guide point P 8 of the guide trajectory line S, and the eighth guide point P 8 is located at the side of the seventh guide point P 7 close to the door front wall 31 and the door side wall 32. The second central axis Q is located at the eighth direction-guiding point Q 8 of the direction-guiding trajectory line K, and the eighth direction-guiding point Q 8 is located at the side of the seventh direction-guiding point Q 7 close to the door front wall 31 and the door side wall 32. Relative to the door body 30, the axial midpoint I moves to the eighth midpoint I 6 along with the axial line segment PQ, and the eighth midpoint I 6 is located at the side of the seventh midpoint I 7 close to the door side wall 32 and the door front wall 31. For example, G max is greater than or equal to 115°. For example, G max ∈any value of [115°, 125°].

[0183] In some embodiments, when the door body 30 is opened to the maximum angle G max , the first shaft 41 is located at the end of the guide portion 50 close to the door side wall 32. The first shaft 41 cooperates with the end of the guide portion 50 close to the door side wall 32 to prevent the door body 30 from continuing to open.

[0184] In some embodiments, when the door body 30 is opened to the maximum angle G max , the second shaft 42 is located at the side of the first shaft 41 close to the door side wall 32 and the door rear wall 31, and is located at the end of the direction-guiding portion 60 close to the door side wall 32. The second shaft 42 cooperates with the end of the direction-guiding portion 60 close to the door side wall 32 to prevent the door body 30 from continuing to open.

[0185] In some embodiments, 0° ≤ G 0 < G 1 < G 2 < G 3 < G 4 < G 5 < G 6 < G 7 = 90° < G max = G 8 . The above G 1 , G 2 , G 3 , G 4 , G 5 , G 6 , G 7 , G 8 , and G max are denoted as a first angle, a second angle, a third angle, a fourth angle, a fifth angle, a sixth angle, a seventh angle, an eighth angle, and a maximum angle in this order. In addition, it should be noted that, the above limitations on the ranges of the respective angles are merely an implementable configuration manner, and are not restrictive limitations on the respective angles.

[0186] In the present disclosure, when the door body 30 is in the closed state, the opening angle φ = 0°.

[0187] In some embodiments, the starting angle G 0 = 0°. That is, at this time, the opening angle is the starting angle G 0 , and the door body 30 is in the closed state.

[0188] In some embodiments of the present disclosure, in the description on the process of opening the door body 30 from the starting angle G 0 to the eighth angle G 8 , in a case that the starting angle G 0 = 0°, the above description applies to the description of the process of opening the door body 30 from the closed state to the eighth angle G 8 .

[0189] Here, it should be noted that in some embodiments of the present disclosure, the mentioned maximum angle G max to which the door body 30 can be opened is the maximum angle to which the door body 30 can be opened when the refrigerator is placed within the housing cabinet 100. After the refrigerator has been moved out from the housing cabinet, the maximum angle to which the door body 30 can be opened is denoted as a free opening angle G maxk , and the free opening angle G maxk is greater than or equal to the maximum angle G max . When the free opening angle G maxk to which the door body 30 can be opened after the refrigerator has been moved out from the housing cabinet is greater than the maximum angle G max , the hinge assembly of the refrigerator includes at least the trajectory characteristics in some embodiments of the present disclosure. The trajectory characteristics during the process in which the door body 30 continues to open from the maximum angle G max to the free opening angle G maxk to which the door body 30 can be opened after the door body 30 has been moved out from the housing cabinet are not limited to the configuration manners described in the present disclosure.

[0190] In combination with the above situation where the door body 30 is opened to a specific angle, in some embodiments, during the process of opening the door body 30 to the maximum angle G max , the first shaft 41 always moves relative to the guide portion 50, and moves in one direction in a direction getting closer to the door side wall 32. The second shaft 42 always moves relative to the direction-guiding portion 60, and moves in one direction in a direction getting closer to the door side wall 32. That is, during the entire process of opening the door body 30, the first shaft 41 and the second shaft 42 each keep moving in one direction without altering the direction, so that the direction of the force received by the first shaft 41 and the second shaft 42 during the opening of the door body 30 is always kept consistent. In this way, the hand feel of opening and closing the door is good, which makes the process of opening and closing the door more smoothly. In addition, the service lives of the guide portion 50 and the direction-guiding portion 60 can be improved. Further, the first shaft 41 and the second shaft 42 maintain the one-directional movement throughout the entire opening process of the door body 30, so that there is no acceleration of stopping and re-moving during the entire opening process of the door body 30, and the movement fluency of the door body 30 is increased.

[0191] The hinge assembly including the trajectory characteristics of the present disclosure above enables the door body to be opened to an obtuse angle within the housing cabinet 100, and during the opening process, the first shaft 41 moves relative to the guide portion 50 throughout the process, and the second shaft 42 moves relative to the direction-guiding portion 60 throughout the process.

[0192] As can be seen from the positions of the two limiting shafts (the first shaft 41 and the second shaft 42) relative to the limiting portions (the guide portion 50 and the direction-guiding portion 60) when the door body 30 is opened to a predetermined angle, the cooperation relationship between the first shaft 41 and the guide portion 50 and the cooperation relationship between the second shaft 42 and direction-guiding portion 60 have the following situations.

[0193] During the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°, the door body 30 is in the closed state) to the fourth angle G 4 , the first shaft 41 moves along the guide portion 50 in a direction getting closer to the door rear wall 33 and the door side wall 32 throughout the process, and the second shaft 42 moves along the direction-guiding portion 60 in a direction getting closer to the door side wall 32 and the door rear wall 33.

[0194] During the process of opening the door body 30 from the fourth angle G 4 to the sixth angle G 6 , the first shaft 41 moves along the guide portion 50 in a direction getting closer to the door front wall 31 and the door side wall 32 throughout the process, and the second shaft 42 moves along the direction-guiding portion 60 in a direction getting closer to the door side wall 32 and the door rear wall 33.

[0195] During the process of opening the door body 30 from the sixth angle G 6 to the eighth angle G8 (for example, G 8 = G max ), the first shaft 41 moves along the guide portion 50 in a direction getting closer to the door front wall 31 and the door side wall 32 throughout the process, and the second shaft 42 moves along the direction-guiding portion 60 in a direction getting closer to the door front wall 31 and the door side wall 32.

[0196] In some embodiments, (G 4 -G 0 ) : (G 8 -G 0 ) belongs to any value of 0.1 to 0.4. For example, (G 4 -G 0 ) : (G 8 -G 0 ) may be 0.1, 0.15, 0.2, 0.25, or 0.3, etc.

[0197] As a configurable manner, (G 4 -G 0 ) : (G 8 -G 0 ) belongs to any value of 0.2 to 0.3.

[0198] In some embodiments, G 4 :G 8 belongs to any value of 0.2 to 0.4. For example, G 4 :G 8 may be 0.2, 0.25, 0.3, 0.35, or 0.4, etc.

[0199] As a configurable manner, G 4 :G 8 belongs to any value of 0.25 to 0.35.

[0200] In some embodiments, G 4 belongs to any value of 30° to 45°, and G 8 belongs to any value of 113° to 125°.

[0201] For example, G 4 may be 30°, 32°, 34°, 36°, 38°, 40°, 42°, etc., and G 8 may be 113°, 115°, 117°, 119°, 121°, 123°, 125°, etc.

[0202] As a configurable manner, G 4 belongs to any value of 34° to 42°, and G 8 belongs to any value of 113° to 125°.

[0203] It is understandable that the above limitations can control the movement direction of the door body 30 between the movement stages from G 0 , G 4 , to G 8 , thereby enabling the door body 30 to move inward and forward during rotation, thus avoiding interference with the housing cabinet 100.

[0204] Hereinafter, referring to FIGS. 6 to 14 and FIG. 16, from the viewpoint of the cooperation relationship of the first shaft 41 relative to the guide portion 50 and the cooperation relationship of the second shaft 42 relative to the direction-guiding portion 60, the relative movements of the two stages will be described. (1) The first stage, referring to FIGS. 6 to 10 and FIGS. 16 to 20, is a process of rotating the door body 30 to open from the starting angle G 0 (for example, G 0 = 0°, the door body 30 is in the closed state) to G 4 .

[0205] In this first stage, the door body 30 is opened from the starting angle G 0 (for example, G 0 = 0°), through G 1 , G 2 , and G 3 , to G 4 . During this process, the first central axis P moves from the starting guide point P 0 along the guide trajectory line S in a direction getting closer to the door rear wall 33 and the door side wall 32. The second central axis Q moves from the starting direction-guiding point Q 0 along the direction-guiding trajectory line K in a direction getting closer to the door rear wall 33 and the door side wall 32.

[0206] For example, the first central axis P starts from the starting guide point P 0 , passes through the first guide point P 1 , the second guide point P 2 , and the third guide point P 3 , and moves to the fourth guide point P 4 in this order along the guide trajectory line S. The second central axis Q starts from the starting direction-guiding point Q 0 , passes through the first direction-guiding point Q 1 , the second direction-guiding point Q 2 , and the third direction-guiding point Q 3 , and moves to the fourth direction-guiding point Q 4 in this order along the direction-guiding trajectory line K.

[0207] In the opening process of the first stage described above, descriptions will be made by using the second hinge member (the guide portion 50 or the direction-guiding portion 60 or the door body 30) as a reference object.

[0208] During the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to G 4 , the axial line segment PQ rotates clockwise from P 0 Q 0 and moves to positions of P 1 Q 1 , P 2 Q 2 , P 3 Q 3 , and P 4 Q 4 in this order in a direction getting closer to the door side wall 32 and the door rear wall 33. That is, the movement trend of the axial line segment PQ is P 0 Q 0 →P 1 Q 1 → P 2 Q 2 →P 3 Q 3 →P 4 Q 4 . At the same time, the movement trend of the axial midpoint I as the axial line segment PQ moves is I 0 → I 1 → I 2 → I 3 → I 4 . That is, during the process of opening the door body 30, relative to the door body 30, the axial midpoint I moves in a direction getting closer to the door side wall 32 and the door rear wall 33.

[0209] Since the guide portion 50 and the direction-guiding portion 60 are provided on the door body 30, the axial line segment PQ represents the movement of the hinge plate 40 provided on the refrigerator body 10, then it can be concluded that: taking the door body 30 as a reference, during the entire process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the fourth angle G 4 , the refrigerator body 10 (i.e. the hinge plate 40) keeps rotating clockwise to open relative to the door body 30, and moves a predetermined distance in a direction getting closer to the door side wall 32 and the door rear wall 33.

[0210] In summary, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the fourth angle G 4 , taking the door body 30 (the guide groove or the direction-guiding groove) as a reference object, the refrigerator body 10 performs a rotational movement while also having a translational movement; this translational movement, for example, is: the refrigerator body 10 has, relative to the door body 30, a displacement parallel to the door rear wall 33 and pointing towards the side of the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side away from the door front wall 31.

[0211] According to the relativity of movement, taking the refrigerator body 10 as a reference object, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the fourth angle G 4 , the door body 30 performs a rotational movement while also having a translational movement; this translational movement, for example, is: the door body 30 has, relative to the refrigerator body 10, a displacement parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side of the door front wall 31.

[0212] (2) The second stage, referring to FIGS. 10 to 12, and FIGS. 20 to 22, is a process of rotating the door body 30 to open from G 4 to G 6 .

[0213] In this second stage, the door body 30 is opened from G 4 through G 5 to G 6 (referring to FIG. 25). In this process, the first central axis P moves from the fourth guide point Q 4 along the guide trajectory line S in a direction getting closer to the door front wall 31 and the door side wall 32, and the second central axis Q moves from the fourth guide point P 4 along the direction-guiding trajectory line K in a direction getting closer to the door rear wall 33 and the door side wall 32.

[0214] For example, the first central axis P moves along the guide trajectory line S from the fourth guide point P 4 through the fifth guide point P 5 and to the sixth guide point P 6 , and the second central axis Q moves along the direction-guiding trajectory line K from the fourth direction-guiding point Q 4 through the fifth direction-guiding point Q 5 and to the sixth direction-guiding point Q 6 .

[0215] In the opening process of the second stage described above, descriptions will be made by using the second hinge member (the guide portion 50 / the direction-guiding portion 60 or the door body 30) as a reference object.

[0216] During the process of opening the door body 30 from G 4 to G 6 , the axial line segment PQ rotates clockwise from P 4 Q 4 and moves to positions of P 5 Q 5 and P 6 Q 6 in this order in a direction getting closer to the door side wall 32. That is, the movement trend of the axial line segment PQ is P 4 Q 4 → P 5 Q 5 → P 6 Q 6 . At the same time, the movement trend of the axial midpoint I as the axial line segment PQ moves is I 4 → I 5 → I 6 .

[0217] In some embodiments, referring to FIG. 26, when the door body 30 is opened to a direction-altering angle G', the axial midpoint I moves to a direction-altering midpoint I'. At this time, the distance between the axial midpoint I and the door front wall 31 is the largest.

[0218] In some embodiments, G 4 < G 5 < G' < G 6 . That is, before the second central axis Q moves to the point (the sixth direction-guiding point Q 6 ) on the direction-guiding trajectory line K where the distance from the door front wall 31 is the largest, the direction-guiding center I has been moved to a position where the distance from the door front wall 31 is the largest.

[0219] That is, during the process in which the door body 30 rotates from the fourth angle G 4 to open to the sixth angle G 6 , the axial midpoint I first moves in a direction getting closer to the door side wall 32 and the door rear wall 33, and then moves in a direction getting closer to the door side wall 32 and the door front wall 31. During the opening of the door body 30, the movement trend of the axial midpoint I as the axial line segment PQ moves is I 4 → I 5 → I '→ I 6 .

[0220] Since the guide portion 50 and the direction-guiding portion 60 are provided at the door body 30, the axial line segment PQ represents the movement of the hinge plate 40 provided on the refrigerator body 10, then it can be concluded that: taking the door body 30 as a reference, during the process of opening the door body 30 from the fourth angle G 4 to the direction-altering angle G', the refrigerator body 10 (i.e. the hinge plate 40) keeps rotating clockwise to open relative to the door body 30, and moves a predetermined distance in a direction getting closer to the door side wall 32 and the door rear wall 33. During the process of opening the door body 30 from the direction-altering angle G' to the sixth angle G 6 , the refrigerator body 10 (i.e. the hinge plate 40) keeps rotating clockwise to open relative to the door body 30, and moves a predetermined distance in a direction getting closer to the door side wall 32 and getting away from the door rear wall 33.

[0221] In summary, during the process of opening the door body 30 from the fourth angle G 4 to the direction-altering angle G', taking the door body 30 (the guide groove / the direction-guiding groove) as a reference object, the refrigerator body 10 also has a translational movement while performing a rotational movement relative to the door body 30. This translational movement is, for example, a displacement parallel to the door rear wall 33 and pointing towards the side of the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side away from the door front wall 31, of the refrigerator body 10 relative to the door body 30.

[0222] During the process of opening the door body 30 from the direction-altering angle G' to the sixth angle G 6 , taking the door body 30 (the guide groove / the direction-guiding groove) as a reference object, the refrigerator body 10 has also a translational movement while performing a rotational movement relative to the door body 30. This translational movement is, for example, a displacement parallel to the door rear wall 33 and pointing towards the side of the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side of the door front wall 31, of the refrigerator body 10 relative to the door body 30.

[0223] According to the relativity of movement, taking the refrigerator body 10 as a reference object, during the process of opening the door body 30 from the fourth angle G 4 to the direction-altering angle G', the door body 30 performs a rotational movement while also having a translational movement; this translational movement, for example, is: the door body 30 has, relative to the refrigerator body 10, a displacement parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side of the door front wall 31.

[0224] During the process of opening the door body 30 from the direction-altering angle G' to the sixth angle G6, there are a displacement parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side away from the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0225] In some embodiments, G' = G 6 . That is, when the door body 30 is opened to the direction-altering angle G', the second central axis Q moves to the sixth direction-guiding point Q 6 on the direction-guiding trajectory line K having the largest distance from the door front wall 31. During the process of opening the door body 30 from G 4 to G 6 , relative to the door body 30, the axial midpoint I moves in a direction getting closer to the door side wall 32 and the door rear wall 33. The movement process of the axial midpoint I can refer to the above descriptions regarding situations where relative to the door body 30, the axial midpoint I moves in a direction getting closer to the door side wall 32 and the door rear wall 33, and the description will not be repeated here.

[0226] (3) The third stage, referring to FIGS. 12 to 14, and FIGS. 22 to 24, is a process of rotating the door body 30 to open from G 6 to G max .

[0227] The door body 30 is opened from G 6 to G max (referring to FIG. 27), in this process of opening, the first central axis P moves from the sixth guide point P 6 along the guide trajectory line S in a direction getting closer to the door front wall 31 and the door side wall 32; and the second central axis Q moves from the sixth direction-guiding point Q 6 along the direction-guiding trajectory line K in a direction getting closer to the door front wall 31 and the door side wall 32.

[0228] For example, the first central axis P moves along the guide trajectory line S from the sixth guide point P 6 through the seventh guide point P 7 and to the eighth guide point P 8 ; and the second central axis Q moves along the direction-guiding trajectory line K from the sixth direction-guiding point Q 6 through the seventh direction-guiding point Q 7 and to the eighth direction-guiding point Q 8 .

[0229] In the opening process of the third stage described above, descriptions will be made by using the second hinge member (the guide portion 50 or the direction-guiding portion 60 or the door body 30) as a reference object.

[0230] During the process of opening the door body 30 from G 6 to G max , the axial line segment PQ rotates clockwise from P 6 Q 6 and moves to positions of P 7 Q 7 and P 8 Q 8 in this order in a direction getting closer to the door side wall 32 and the door front wall 31. That is, the movement trend of the axial line segment PQ is P 6 Q 6 → P 7 Q 7 → P 8 Q 8 . At the same time, the movement trend of the axial midpoint I as the axial line segment PQ moves is I 6 → I 7 → I 8 . During the process of opening the door body 30 from G 6 to G max , relative to the door body 30, the axial midpoint I moves in a direction getting closer to the door side wall 32 and the door front wall 31.

[0231] In some embodiments, since the guide portion 50 and the direction-guiding portion 60 are provided on the door body 30, the axial line segment PQ represents the movement of the hinge plate 40 provided on the refrigerator body 10, and it can be concluded that: taking the door body 30 as a reference, during the process of opening the door body 30 from the sixth angle G 6 to the maximum angle G max (the eighth angle G 8 ), the refrigerator body 10 (i.e. the hinge plate 40) keeps rotating clockwise to open relative to the door body 30, and moves a predetermined distance in a direction getting closer to the door side wall 32 and the door front wall 31.

[0232] In summary, during the process of opening the door body 30 from the sixth angle G 6 to the maximum angle G max (the eighth angle G 8 ), taking the door body 30 (the guide groove or the direction-guiding groove) as a reference object, the refrigerator body 10 also has a translational movement while performing a rotational movement relative to the door body 30. This translational movement is, for example, a displacement parallel to the door rear wall 33 and pointing towards the side of the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side of the door front wall 31, of the refrigerator body 10 relative to the door body 30.

[0233] According to the relativity of movement, taking the refrigerator body 10 as a reference object, during the process of opening the door body 30 from the sixth angle G 6 to the maximum angle G max (the eighth angle G 8 ), the door body 30 also has a translational movement while performing a rotational movement. This translational movement is, for example, a displacement parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side away from the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0234] Combining the situations of the first stage, the second stage and the third stage, it can be seen that: according to the relativity of movement, taking the refrigerator body 10 as a reference object, the door body 30 has a translational movement while performing a rotational movement. The translational displacement components of this translational movement include a displacement component parallel to the door rear wall 33 and a displacement component parallel to the door side wall 32. For example, the displacement component parallel to the door rear wall 33 is denoted as a first direction displacement S 1 , and the displacement component parallel to the door side wall 32 is a second direction displacement S 2 . At different opening stages of the door body 30, the orientations of the first direction displacement S 1 and the second direction displacement S 2 will be different.

[0235] In the above first stage (during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to G 4 ) and in the second stage during the process of opening the door body 30 from G 4 to G', the first direction displacement S 1 points towards the side away from the door side wall 32, and the second direction displacement S 2 points towards the side of the door front wall 31.

[0236] In the above second stage during the process of opening the door body 30 from G' to G 6 and in the third stage (during the process of opening the door body 30 from the sixth angle G 6 to the maximum angle G max (the eighth angle G 8 )), the first direction displacement S 1 points towards the side away from the door side wall 32, and the second direction displacement S 2 points towards the side away from the door front wall 31.

[0237] That is, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the direction-altering angle G', the first direction displacement S 1 points towards the side away from the door side wall 32, and the second direction displacement S 2 points towards the side of the door front wall 31.

[0238] During the process of opening the door body 30 from the direction-altering angle G' to the maximum angle G max (the eighth angle G 8 ), the first direction displacement S 1 points towards the side away from the door side wall 32, and the second direction displacement S 2 points towards the side away from the door front wall 31. For example, the direction-altering angle G' < 90°.

[0239] Here, it should be supplemented that, the "oriented towards the door side wall 32" refers to a direction pointing from the end of the door body 30 opposite to the door side wall 32 towards the door side wall 32.

[0240] The "oriented away from the door side wall 32" refers to a direction pointing from the door side wall 32 towards the end of the door body 30 opposite to the door side wall 32.

[0241] The "oriented towards the side of the door front wall 31" refers to a direction pointing from the door rear wall 33 towards the door front wall 31.

[0242] The "oriented towards the side away from the door front wall 31" refers to a direction pointing from the door front wall 31 towards the door rear wall 33.

[0243] Further, it should be noted that, the above first direction displacement S 1 , the second direction displacement S 2 , are both instantaneous relative translational displacements, as such, they are used to explain the instantaneous relative translational movement trend between the refrigerator body 10 and the door body 30.

[0244] Referring to FIGS. 28 to 32, in the plane where the top wall of the refrigerator body 10 is located, and on the side of the refrigerator body 10 close to the door body 30, a displacement coordinate system AOB is established. For example, in the displacement coordinate system AOB, OB is perpendicular to the plane where the access opening is located, and OA is parallel to the plane where the access opening is located. In the displacement coordinate system AOB, it is defined that the direction pointing from the second body side wall towards the first body side wall is positive, and the direction (from the rear to the front) pointing from the access opening towards the door front wall 31 when the door body 30 is closed is positive. It should be noted that, during the opening of the door body 30, the displacement coordinate system AOB remains stationary relative to the refrigerator body 10 and does not move with the opening of the door body 30. In addition, during the opening of the door body 30, the relative position of the door body coordinate system X 1 O 1 Y 1 relative to the displacement coordinate system AOB is continually changing as the opening angle of the door body 30 varies. When the opening angle of the door body 30 is determined, at that time, the relative position of the instantaneous door body coordinate system X 1 O 1 Y 1 relative to the displacement coordinate system AOB remains relatively stationary.

[0245] In some embodiments, in the displacement coordinate system AOB, the door body 30 has a first direction displacement S 1 , parallel to the door rear wall 33, and a second direction displacement S 2 parallel to the door side wall 32. The component displacement of the first direction displacement 5; along the A axis is A 1 , and the component displacement of the first direction displacement S 1 , along the B axis is B 1 . The component displacement of the second direction displacement S 2 along the A axis is A 2 , and the component displacement of the second direction displacement S 2 along the B axis is B 2 . During the whole process of opening the door body 30, A 0 = A 1 + A 2 > 0, B 0 = B 1 + B 2 > 0.

[0246] During the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the eighth angle G 8 (for example, G 8 = the maximum angle G max ), in the displacement coordinate system AOB, the door body 30 has a first translational displacement A 0 < 0 and a second translational displacement B 0 > 0. Relative to the refrigerator body 10, the door body 30 also has a translational movement tendency of moving in a negative direction along the A axis and moving in a positive direction along the B axis while performing the rotational movement. That is, during the whole process of opening the door body 30 from the starting angle G 0 to the maximum angle G max (the eighth angle G 8 ), the door body 30 also has a movement tendency to translate inward and forward while rotating and opening relative to the refrigerator body 10.

[0247] (1) Referring to FIGS. 28 to 31, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to 90°, the door body 30 rotates counterclockwise to open relative to the refrigerator body 10, and the door side wall 32, the door rear wall 33, and the door front wall 31 also rotate counterclockwise during the opening process at this stage. In the plane where the top wall of the refrigerator body 10 is located, the door side wall 32 extends outwardly and forwardly in a direction pointing from the second side edge N towards the first side edge W (pointing from the door rear wall 33 towards the door front wall 31), and the door rear wall 33 extends inwardly and forwardly in a direction pointing from the door side wall 32 towards the end of the door body 30 opposite to the door side wall 32.

[0248] During the above opening process (opening from the starting angle G 0 (for example, G 0 = 0°) to 90°), the door side wall 32 starts to rotate counterclockwise from the state in which it is parallel to the reference plane M 0 , and the included angle between the door side wall 32 and the plane where the access opening is located gradually decreases, while the included angle between the door side wall 32 and the reference plane M 0 gradually increases. That is, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to 90°, relative to the refrigerator body 10, the door side wall 32 extends towards a side away from the second body side wall and the access opening in a direction pointing from the second side edge N towards the first side edge W. At the same time, as the opening angle of the door body 30 increases, the included angle between the door rear wall 33 and the plane where the access opening is positioned gradually increases, and the included angle between the door rear wall 33 and the reference plane M 0 gradually decreases. That is, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to 90°, relative to the refrigerator body 10, the door rear wall 33 extends towards a direction away from the first body side wall and the access opening (close to the second body side wall and away from the access opening), in a direction pointing from the door side wall 32 towards the end of the door body 30 opposite to the door side wall 32.

[0249] (1.1) With reference to the descriptions of the displacement direction of the door body 30 relative to the refrigerator body 10 during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the direction-altering angle G' (G' < 90°), it can be seen that: during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the direction-altering angle G', taking the refrigerator body 10 as a reference object, the door body 30 includes a first direction displacement S 1 parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a second direction displacement S 2 parallel to the door side wall 32 and pointing towards the side of the door front wall 31. That is, the first direction displacement S 1 points towards the inner front side (inward and forward side) of the refrigerator body 10, and the second direction displacement S 1 points towards the outer front side (outward and frontward side) of the refrigerator body 10.

[0250] Referring to FIGS. 28 to 29, in the displacement coordinate system AOB, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the direction-altering angle G' (G' < 90°), the first direction displacement of the door body 30 is located in the second quadrant (A < 0, B > 0), and the second direction displacement is located in the first quadrant (A> 0, B > 0). A displacement decomposition is performed on the first direction displacement S 1 and the second direction displacement S 1 , along the A-axis and along the B-axis respectively. The component displacement of the first direction displacement S 1 along the A axis is A 1 < 0, and the component displacement of the first direction displacement S 1 along the B axis is B 1 > 0. The component displacement of the second direction displacement S 2 along the A axis is A 2 > 0, and the component displacement of the second direction displacement S 2 along the B axis is B 2 > 0. Under the trajectory characteristic configurations of the present disclosure, there is |A 1 |>|A 2 |, then there is, A 0 = Ad 1 , + A 2 < 0, B 0 = B 1 + B 2 > 0. That is, during the process of opening the door body 30 from the starting angle G 0 to the direction-altering angle G', in the displacement coordinate system AOB, the door body 30 has a first translational displacement A 0 < 0 and a second translational displacement B 0 > 0. Therefore, it can be concluded that, relative to the refrigerator body 10, the door body 30 also has a translational movement tendency of moving in a negative direction along the A axis and moving in a positive direction along the B axis while performing the rotational movement. That is, during the process of opening the door body 30 from the starting angle G 0 to G' (G' < 90°), the door body 30 also has a movement tendency to translate inward and forward while rotating and opening relative to the refrigerator body 10.

[0251] In the above, during the process of opening the door body 30 from the starting angle G 0 to G' (G' < 90°), the door body 30 keeps moving inward to compensate for the outward displacement of the first side edge W caused by the simple rotation of the door body 30, so as to restrict the distance by which the first side edge W exceeds the reference plane M 0 , thereby avoiding the door body 30 from failing to continue to be opened due to interference between the first side edge W and the housing cabinet 100. At the same time, the door body 30 keeps moving forward to compensate for the backward displacement of the second side edge N caused by the simple rotation of the door body 30, so as to restrict the distance by which the second side edge W approaches the plane where the access opening is located, and thus the amount of squeezing the door seal strip 5 when opening the door body 30 is reduced.

[0252] (1.2) With reference to the above descriptions of the displacement direction of the door body 30 relative to the refrigerator body 10 during the process of opening the door body 30 from the direction-altering angle G' to 90° (G' < 90°), it can be seen that: during the process of opening the door body 30 from the direction-altering angle G' to 90° (for example, G 7 = 90°), taking the refrigerator body 10 as a reference object, the door body 30 has a first direction displacement S 1 parallel to the door rear wall 33 and oriented towards the side away from the door side wall 32, and a second direction displacement S 2 parallel to the door side wall 32 and oriented towards the side away from the door front wall 31. That is, the first direction displacement S 1 points towards the inner front side (inward and forward side) of the refrigerator body 10, and the second direction displacement S 2 points towards the inner rear side (inward and rearward side) of the refrigerator body 10.

[0253] Referring to FIGS. 28 and 30, in the displacement coordinate system AOB, during the process of opening the door body 30 from the direction-altering angle G' to 90° (for example, G 7 = 90°), the first direction displacement S 1 of the door body 30 is located in the second quadrant (A < 0, B > 0), and the second direction displacement S 2 is located in the third quadrant (A < 0, B < 0). A displacement decomposition is performed on the first direction displacement S 1 and the second direction displacement S 2 along the A-axis and along the B-axis respectively. The component displacement of the first direction displacement S 1 along the A axis is A 1 < 0, and the component displacement of the first direction displacement S 1 along the B axis is B 1 > 0. The component displacement of the second direction displacement S 1 , along the A axis is A 2 < 0, and the component displacement of the second direction displacement S 2 along the B axis is B 2 < 0. Under the trajectory characteristic configurations of the present disclosure, there is |B 1 |>|B 2 |, then there is, A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0. That is, during the process of opening the door body 30 from the direction-altering angle G' to 90° (for example, G 7 = 90°), in the displacement coordinate system AOB, the door body 30 has a first translational displacement A 0 < 0 and a second translational displacement B 0 > 0. Therefore, it can be concluded that, relative to the refrigerator body 10, the door body 30 also has a translational movement tendency of moving in a negative direction along the A axis and moving in a positive direction along the B axis while performing the rotational movement. That is, during the process of opening the door body 30 from the direction-altering angle G' to 90° (for example, G 7 = 90°), the door body 30 also has a movement tendency to translate inward and forward while rotating and opening relative to the refrigerator body 10.

[0254] (2) Referring to FIG. 9, when the door body 30 is opened to 90°, the door side wall 32 is parallel to the plane where the access opening is located, and is perpendicular to the reference plane M 0 . At this time, the door rear wall 33 is parallel to the reference plane M 0 , and is perpendicular to the plane where the access opening is located. That is, relative to the refrigerator body 10, in a direction pointing from the second side edge N towards the first side edge W, the door side wall 32 extends from the inside to the outside, and the door rear wall 33 extends from the rear to the front.

[0255] With reference to the descriptions of the displacement direction of the door body 30 relative to the refrigerator body 10 during the process of opening the door body 30, it can be concluded from the above that, when the door body 30 is opened to 90°, taking the refrigerator body 10 as a reference object, the door body 30 has a first direction displacement S 1 parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a second direction displacement S 2 parallel to the door side wall 32 and pointing towards the side away from the door front wall 31. That is, the first direction displacement S 1 points towards the front side of the refrigerator body 10, and the second direction displacement S 2 , points towards the inner side of the refrigerator body 10.

[0256] Referring to FIG. 31, when the door body 30 is opened to 90°, in the displacement coordinate system AOB, the first direction displacement S 1 of the door body 30 is along the B axis and points towards the positive direction of the B axis, and the second direction displacement S 2 thereof is along the A axis and points towards the negative direction of the A axis. A displacement decomposition is performed on the first direction displacement S 1 and the second direction displacement S 2 along the A-axis and along the B-axis respectively. The component displacement of the first direction displacement S 1 , along the A axis is A 1 = 0, and the component displacement of the first direction displacement S 1 along the B axis is B 1 = S; > 0. The component displacement of the second direction displacement S 2 along the A axis is A 2 = S 2 < 0, and the component displacement of the second direction displacement S 2 along the B axis is B 0 = 0. For example, A 0 = A 1 + A 2 = S 2 < 0, B 0 = B 0 + B 2 = S 1 > 0. That is, when the door body 30 is opened to 90°, in the displacement coordinate system AOB, the door body 30 has a first translational displacement A 0 < 0 and a second translational displacement B 0 > 0. Therefore, it can be concluded that, relative to the refrigerator body 10, the door body 30 also has a translational movement tendency of moving in a negative direction along the A axis and moving in a positive direction along the B axis while performing the rotational movement. That is, when the door body 30 is opened to 90°, the door body 30 also has a movement tendency to translate inward and forward while rotating and opening relative to the refrigerator body 10.

[0257] In conclusion, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to 90°, the door body 30 keeps a movement tendency to translate inward and forward throughout the process while rotating to open.

[0258] In some embodiments, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to 90°, the door body 30 keeps a movement tendency to translate inward, so that when the door body 30 is opened to 90°, the door front wall 31 is parallel to the first body side wall, or the door front wall 31 is located at the side of the first body side wall close to the second body side wall. As such, the distance between the door body 30 (the door front wall 31) and the housing cabinet 100 (the reference plane M 0 ) when the door body 30 is opened to 90° is increased, and the space allowing the door body 30 to continue to open is increased, thereby increasing the maximum angle G max (for example, G max = the eighth angle G 8 ) to which the door body 30 placed within the housing cabinet 100 can be opened, and reducing the restriction on the opening angle of the door body 30 placed within the housing cabinet 100 by the housing cabinet 100.

[0259] (3) Referring to FIGS. 9 to 12, during the process of rotating the door body 30 to open from 90° to G 8 (G 8 > 90°), the door body 30 rotates counterclockwise relative to the refrigerator body 10, and the door side wall 32 also rotate counterclockwise during the opening process at this stage. In the plane where the top wall of the refrigerator body 10 is located, the door side wall 32 extends outwardly and rearwardly in a direction pointing from the second side edge N towards the first side edge W. The door rear wall 33 extends outwardly and forwardly in a direction pointing from the door side wall 32 towards the end of the door body 30 opposite to the door side wall 32.

[0260] During the above opening process, the door side wall 32 starts to rotate counterclockwise from the state in which it is perpendicular to the reference plane M 0 (when the door body 30 is opened to 90°), and the included angle between the door side wall 32 and the plane where the access opening is located gradually increases, while the included angle between the door side wall 32 and the reference plane M 0 gradually decreases. That is, during the process of rotating the door body 30 to open from 90° to G 8 , relative to the refrigerator body 10, the door side wall 32 extends towards the side away from the second body side wall and close to the access opening in a direction pointing from the second side edge N towards the first side edge W. In addition, the included angle between the door rear wall 33 and the plane where the access opening is positioned gradually decreases, and the included angle between the door rear wall 33 and the reference plane M 0 gradually increases. That is, during the process of rotating the door body 30 to open from 90° to G 8 , relative to the refrigerator body 10, and along a direction pointing from the door side wall 32 towards the end of the door body 30 opposite to the door rear wall 33, the door rear wall 33 extends in a direction away from the second body side wall and the access opening.

[0261] During the process of rotating the door body 30 to open from 90° to G 8 (G 8 > 90°), taking the refrigerator body 10 as a reference object, the door body 30 has a first direction displacement S 1 parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a second direction displacement S 2 parallel to the door side wall 32 and pointing towards the side away from the door front wall 31. That is, the first direction displacement S 1 points towards the outer front side (outward and forward side) of the refrigerator body 10, and the second direction displacement S 2 points towards the inner front side (inward and frontward side) of the refrigerator body 10.

[0262] Referring to FIGS. 37 and 42, in the displacement coordinate system AOB, during the process of opening the door body 30 from 90° to G 8 (G 8 > 90°), the first direction displacement S 1 of the door body 30 is located in the first quadrant (A > 0, B > 0), and the second direction displacement S 2 is located in the second quadrant (A < 0, B > 0). A displacement decomposition is performed on the first direction displacement S 1 and the second direction displacement S 1 , along the A-axis and along the B-axis respectively. The component displacement of the first direction displacement S 1 along the A axis is A 1 > 0, and the component displacement of the first direction displacement S 1 along the B axis is B 1 > 0. The component displacement of the second direction displacement S 2 along the A axis is A 2 < 0, and the component displacement of the second direction displacement S 2 along the B axis is B 2 > 0. Under the trajectory characteristic configurations of the present disclosure, there is |A 2 |>|A 1 |; then there is, A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 1 > 0. That is, during the process of opening the door body 30 from 90° to G 8 , in the displacement coordinate system AOB, the door body 30 has a first translational displacement A 0 < 0 and a second translational displacement B 0 > 0. Therefore, it can be concluded that, relative to the refrigerator body 10, the door body 30 has a translational movement tendency of moving in a negative direction along the A axis and moving in a positive direction along the B axis while performing the rotational movement. That is, during the process of opening the door body 30 from 90° to G 8 , the door body 30 has a movement tendency to translate inward and forward while rotating and opening relative to the refrigerator body 10.

[0263] In conclusion, during the entire process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the eighth angle G 8 (G 8 > 90°), relative to the refrigerator body 10, the door body 30 has a movement tendency to translate inward and forward while simply rotating throughout the process.

[0264] It is to be noted that, although the cooperating structures of the double-shaft and double-groove in the related technologies can prevent the door body 30 from colliding with the housing cabinet 100 during the opening of the door body 30, the door body 30 cannot be completely opened in a configuration scenario in which the gap between the refrigerator (the door body 30) and the housing cabinet is less than or equal to 3 mm, resulting in inconvenience for a user to take out or place in articles.

[0265] Referring to FIGS. 33 to 34, in the series of applications represented by CN115682517A filed by the Applicant on December 23, 2021, the guide trajectory line of the guide portion of the hinge assembly starts from its one end away from the door side wall, firstly extends in a direction getting away from the door front wall and getting closer to the door side wall, and then extends in a direction getting closer to the door front wall and the door side wall. The direction-guiding trajectory line of the direction-guiding portion starts from its end away from the door side wall, extends firstly in a direction getting away from the door front wall and getting closer to the door side wall, and then extends in a direction getting closer to the door front wall and the door side wall. In the projection on the plane where the top wall of the refrigerator body is located, the midpoint of the line segment where the central axis of the first shaft and the central axis of the second shaft are located is denoted as an axial midpoint T. During the opening process of the door body, the axial midpoint T moves relative to the door body, and for the axial midpoint trajectory line formed by the axial midpoint T moving relative to the door body, as the opening angle of the door body increases, the distance between the axial midpoint T and the door front wall firstly increases and then decreases. For example, a point at which the distance between the axial midpoint T and the door front wall is the largest is T', and at this point, the angle to which the door body is opened relative to the refrigerator body is denoted as G'. In CN115682517A, the guide trajectory line is a standard circular arc, and the direction-guiding trajectory line is formed by connecting two standard circular arcs. Limited by the structures of the guide trajectory line or the direction-guiding trajectory line, when the axial midpoint T moves relative to the door body to the point T' at which the distance between the axial midpoint T and the door front wall is the largest, the opening angle of the door body relative to the refrigerator body is an obtuse angle. That is, G' > 90°,

[0266] In the solution defined by CN115682517A, in the displacement coordinate system AOB, the door body has a first direction displacement S 1 parallel to the door rear wall 33, and a second direction displacement S 2 parallel to the door side wall 32. The component displacement of the first direction displacement S 1 along the A axis is A 1 , and the component displacement of the first direction displacement S 1 along the B axis is B 1 . The component displacement of the second direction displacement S 2 along the A axis is A 2 , and the component displacement of the second direction displacement S 2 along the B axis is B 2 .

[0267] Referring to FIG. 34, during the process of opening the door body from the starting angle G 0 (for example, G 0 = 0°) to 90°, as shown in FIGS. 34(A) and 34(B), A 1 < 0, B 1 > 0; A 2 > 0, B 2 > 0; A 0 = A 1 + A 2 < 0, and B 0 = B 1 + B 2 > 0.

[0268] When the door body is opened to 90°, as shown in FIG. 34(C), A 1 = 0, B 1 > 0; A 2 < 0, B 1 = 0; A 0 = A 1 + A 2 < 0, and B 0 = B 1 + B 2 > 0.

[0269] During the process of opening the door body from 90° to G', as shown in FIG. 34(D), A 1 > 0, B 1 > 0; A 2 > 0, B 0 < 0; A 0 = A 1 + A 2 > 0, and B 0 = B 1 + B 2 > 0.

[0270] During the process of opening the door body from G' to the maximum angle G max (the eighth angle G 8 ), as shown in FIG. 34(E), A 1 > 0, B 1 > 0; A 2 < 0, B 2 > 0; A 0 = A 1 + A 2 < 0, and B 0 = B 1 + B 2 > 0.

[0271] It can be concluded from the above that, in the solutions of the series of applications represented by CN115682517A, during the process of opening the door body from the closed state to 90°, the door body has a movement tendency to move inward and forward while the door body is rotating. During the process of opening the door body from 90° to G', the door body has a movement tendency to move outward and forward while rotating. During the process of opening the door body from G' to the maximum angle G max (the eighth angle G 8 ), the door body 30 has a movement tendency to move inward and forward while rotating. That is, during the entire opening process of the door body, there is at least one stage during which the door body keeps moving outwardly, which results in a decrease in the angle to which the door body of the refrigerator rotated in the housing cabinet can continue to open from 90°, thereby reducing the maximum angle to which the door body of the refrigerator placed in the housing cabinet can be opened.

[0272] Compared with the structures of the hinge assemblies currently available on the market (compared with the solutions in the series of applications represented by CN115682517A), the refrigerator with the hinge assembly containing the trajectory characteristics of the present disclosure has a direction-altering angle G' being an acute angle or a right angle (in CN115682517A, it is an obtuse angle), so that during the entire opening process of the door body 30 (the maximum angle of opening is an obtuse angle), relative to the refrigerator body 10, the door body 30 has an instantaneous translational displacement of the inward and forward translational movement while simply rotating, so as to enable the moving door body 30 to maintain an inward and forward translational movement while rotating relative to the previous state.

[0273] In the refrigerator of some embodiments of the present disclosure, during the above opening process of the door body 30, the door body 30 moves inward, on the one hand, this compensates for the outward displacement of the first side edge W caused by the simple rotation of the door body 30, so as to restrict the distance by which the first side edge W exceeds the reference plane M 0 , and to prevent the door body 30 from interfering with the housing cabinet 100 when opening the door body 30. On the other hand, the distance between the door body 30 and the housing cabinet 100 is increased, so as to reduce the restriction by the housing cabinet 100 on the limit angle to which the door body 30 placed within the housing cabinet 100 can be opened. In addition, the door body 30 also moves forward at the same time, which further reduces the restriction by the housing cabinet 100 on the limit angle to which the door body 30 placed within the housing cabinet 100 can be opened.

[0274] In summary, the above door body 30 also has an inward and forward translational movement while simply rotating to open, and by the cooperatively functioning of the movement tendencies of the inward translation and the forward translation, they together reduce the restriction by the housing cabinet 100 on the limit angle to which the door body 30 placed within the housing cabinet 100 can be opened. In addition, the door body 30 has the above movement tendencies of the inward translation and the forward translation during the entire opening process, so that the door body 30 is more moved out of the space defined by the housing cabinet 100 to the maximum extent, so that the limit angle to which the door body 30 placed within the housing cabinet 100 is opened can reach an obtuse angle (for example, 115° or above or 120° or above), and the purpose that the refrigerator placed within the housing cabinet 100 can be fully opened is realized, and the user can take out or place in articles conveniently.

[0275] It is to be noted that, in the above descriptions, only some angles in the range of 0 to 90°, 90°, and some angles within the range of 90° to G max = G 8 are used as representatives to illustrate the overall movement tendency of the door body 30, but the above angles can represent the movement tendencies within the corresponding ranges, and can illustrate that the hinge assembly containing the above trajectory characteristics of the present disclosure can enable the door body 30 to have a movement tendency of inward and forward translation throughout the process of rotating to open.

[0276] It is understandable that, the hinge assembly containing the trajectory characteristics of the present disclosure enables the door body 30 to move inward and forward while rotating during the opening process of the door body 30, and at the same time, the trajectories (the guide trajectory line S and the direction-guiding trajectory line K) possessed by the guide portion 50 and the direction-guiding portion 60 are smooth and have no sharp points, thereby ensuring the fluency and stability of opening of the door body 30.

[0277] In combination with the foregoing descriptions of the opening process of the door body 30, next, the movement situation of the door body 30 rotating from the previous state (such as φ i ) about the midpoint of the axial line segment PQ relative to the door body 30 to an adjacent latter state (angle φ i+1 ) is described, and the position of the door body 30 when in the previous state (such as φ i ) is compared with a position of the door body 30 when in the adjacent latter state (φ i+1 ), to illustrate the translational movement tendency of the door body 30 with respect to the previous state while performing the rotating movement during the opening of the door body 30 under the configuration of the hinge assembly containing the trajectory characteristics of the present disclosure.

[0278] Referring to FIGS. 33 to 39, it is assumed that the door body 30 rotates around the axial midpoint I of the previous state to a position of the adjacent latter state (the door body 30 is indicated by a dashed line), and during this moving process, the rotation center of the door body 30 is fixed relative to the door body 30, and the rotation center of the door body 30 is the position where the axial midpoint I of the door body 30 in the previous state is located. Under this movement tendency, when the door body 30 is opened to the adjacent latter state, the first side edge W is located at W' with respect to the refrigerator body 10, and the second side edge N is located at N' with respect to the refrigerator body 10, and the side seal edge F is located at F' with respect to the refrigerator body 10.

[0279] Referring to FIG. 35, the position where the door body 30 is located indicated by the dotted line is the position arrived by the door body 30 when the door body 30 simply rotates by the first angle G 1 using the midpoint I (I 0 ) of its axial line segment PQ at the starting angle G 0 (for example, in the closed state) as a rotation center. The position where the door body 30 is located indicated by the solid line is the position arrived by the door body 30 when the door body 30 rotates to open to the first angle G 1 under the restriction of the hinge assembly of the present disclosure. In FIG. 36, the position where the door body 30 is located indicated by the dashed line is the position arrived by the door body 30 after the door body 30 rotates to open to the first angle G 1 under the restriction of the hinge assembly of the present disclosure and then the door body 30 simply rotates to the second angle G 2 using its axial midpoint I at the first angle G 1 (the axial midpoint I (I 1 ) of the previous state) as a rotation center. The position where the door body 30 is located indicated by the solid line is the position arrived by the door body 30 when the door body 30 rotates to open to the second angle G 2 under the restriction of the hinge assembly of the present disclosure. Similarly, FIGS. 35 to 42 are schematic diagrams comparing the positions under the two different opening manners described above at different opening angles.

[0280] To sum up, in FIGS. 35 to 42, the position where the door body 30 is located indicated by the dashed line is the position arrived by the door body 30 after the door body 30 rotates to open to the i-th angle φ i under the restriction of the hinge assembly 90°). That is, the component displacement of the first direction displacement S 1 along the A axis is A 1 < 0, and the component displacement of the first direction displacement S 1 along the B axis is B 1 > 0. The component displacement of the second direction displacement S 2 along the A axis is A 2 > 0, and the component displacement of the second direction displacement S 2 along the B axis is B 2 > 0. In addition, under the trajectory characteristic configurations of the present disclosure, there is |A 1 |> lA 2 |, then there is A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0. That is, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to 90°, in the displacement coordinate system AOB, the door body 30 has a first translational displacement A 0 < 0 and a second translational displacement B 0 > 0. That is, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to 90°, the door body 30 has a movement tendency to translate inward and forward while rotating and opening relative to the refrigerator body 10.

[0281] Under the configuration characteristics of the direction-altering angle G' = 90° (for example, G 7 = 90°), the process of opening the door body 30 from 90° to G 8 is the same as the above corresponding stage. Referring to FIG. 33, the component displacement of the first direction displacement S 1 along the A axis is A 1 > 0, and the component displacement of the first direction displacement S 1 along the B axis is B 1 > 0. The component displacement of the second direction displacement S 2 along the A axis is A 2 < 0, and the component displacement of the second direction displacement S 2 along the B axis is B 2 > 0. Under the trajectory characteristic configurations of the present disclosure, there is |A 2 |> |A 1 |. Then there is, A 0 = A 1 + A 1 < 0, B 0 = B 1 + B 2 > 0. That is, during the process of opening the door body 30 from 90° to G 8 , in the displacement coordinate system AOB, the door body 30 has a first translational displacement A 0 < 0 and a second translational displacement B 0 > 0. That is, during the process of opening the door body 30 from 90° to G 8 , the door body 30 has a movement tendency to translate inward and forward while rotating and opening relative to the refrigerator body 10.

[0282] In summary, under the configuration in which the direction-altering angle G' = 90°, compared with the configuration in which G' < 90°, the door body 30 does not have the process of opening the door body 30 from G' to 90° (for example, G 7 = 90°) (G' < 90° (for example, G 7 = 90°)) (referring to FIG. 32).

[0283] In some embodiments, G' = G 6 = G 7 = 90°. In this way, during the movement processes of G 6 and G 7 , the opening angle of the door body 30 may remain unchanged, but the door body 30 moves inward under the action of the external force, thereby conducive to increase of the value of the maximum opening angle to which the door body 30 can be opened when within the housing cabinet 100.

[0284] In some embodiments, 90° < G 6 or 90° = G 6 . It is satisfied that, 0° ≤ G 0 < G 1 < G 2 < G 3 < G 4 < G 5 < 90° ≤ G 6 < G 7 < G max = Gs.

[0285] The absolute value of the difference of G 6 - 90° is denoted as |G 6 - 90°|, and |G 6 - 90°| belongs to any value of 0° to 3°. For example, |G 6 - 90°| may be 0°, 1°, 2°, or 3°, etc.

[0286] In some embodiments, |G 6 - 90°| belongs to any value of 3° to 5°. For example, |G 6 - 90°) may be 3°, 4°, or 5°, etc.

[0287] It can be understood that, by setting G 6 to be about 90°, when the door body 30 moves within the range of G 6 and G 7 , it can move inward with less effort.

[0288] In combination with the movement conditions of the first shaft 41 relative to the guide portion 50 and the second shaft 42 relative to the direction-guiding portion 60 in the first stage, the second stage, and the third stage, during the opening of the door of the present disclosure and then the door body 30 simply rotates to the (i+1)-th angle φ i+1 using its axial midpoint I at the i-th angle φi (the axial midpoint I (Ii) of the previous state) as a rotation center. The position where the door body 30 is located indicated by the solid line is the position arrived by the door body 30 when the door body 30 rotates to open to the (i+1)-th angle φ i+1 under the restriction of the hinge assembly of the present disclosure. For example, i belongs to any value of 0 to 7, and i is an integer.

[0289] It should be noted that, in the above embodiments, the comparison between the position of the door body 30 in the current state of the present disclosure and the assumed position of the door body 30 if the door body 30 simply rotates around the axial midpoint I to the opening angle of the door body 30 of the present disclosure from the previous state of the present disclosure is representative, and the above embodiments can representatively illustrate the translational movement tendency of the door body 30 relative to the previous state during the opening process of the door body 30 of the present disclosure. Here, only some selected angles (φ i set to 0°, G 1 , ..., G 7 , and correspondingly, φ i+1 set to G 1 , ..., G 8 ) are used for comparison and illustration, to present the translational movement tendency of the door body 30 when the door body 30 rotates to open.

[0290] By comparing the configuration of the present disclosure (in which the door body 30 rotates around a point that keeps dynamically changing relative to the door body 30 throughout the entire process) with the manner in which the door body 30 simply rotates around the axial midpoint I of the previous state, it can be known that the movement trajectory of the door body 30 in this disclosure has at least the following characteristics.

[0291] During the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to G max , the position W where the first side edge is located is always at the side of W' close to the second body side wall and away from the access opening, the position N where the second side edge is located is always at the side of N' close to the second body side wall and away from the access opening, and the position F where the side seal edge is located is always at the side of F' close to the second body side wall and away from the access opening. That is, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to G max , the door body 30 has a tendency of moving inward and forward while rotating to open.

[0292] Referring to FIG. 43, in a projection on the plane where the top wall of the refrigerator body 10 is located, when the door body 30 rotates to open to φ i under the restriction by the hinge assembly containing the trajectory characteristics of the present disclosure, the position of the axial midpoint I relative to the door body 30 is denoted as an instantaneous axial midpoint I i . Taking the instantaneous axial midpoint I i as the center of the circle, and taking the line segment I i W as the radius, after rotating from the I i W by Δφ = φ (i+1) - φ i along the opening direction of the door body 30, the position of the point W' where the first side edge is located is obtained.

[0293] After the door body 30 has continued to open from φ i by Δφ = φ (i+1) - φ i , the opening angle is φ i+1 , and the first side edge moves to W. By comparing the positions of W' and W above, it can be seen that, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to φ = G max , the position W where the first side edge is located is always located at the side of the W' close to the second body side wall and away from the access opening. It is to be noted that, φ i and φ (i+1) each belong to any value of 0° to G max , and φ (i+1) > φ i .

[0294] The opening angle φ i is the previous state adjacent to the opening angle φ (i+1) . That is, when the door body 30 continues to open from φ i , it then reaches the position of φ (i+1) . Δφ approaches 0 infinitely.

[0295] The above position comparison method is equally applicable to the second side edge, the side seal edge, and any point on the door body 30. Through the comparison, it can be known that, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to G max , the door body 30 has a tendency of moving inward and forward while rotating to open.

[0296] It should be noted that, the above can be used as a method for determining the translational movement tendency of the door body 30 when the door body 30 is rotating to open, so as to explore the translational movement process during the opening process of the door body 30. When performing the comparison, the comparison can be made when Δφ = φ i+1 - φ i is any value of 0° to 10°, so as to visually display the translational movement tendency. It should be noted that, the smaller Δφ is, the more accurate the translation tendency between two adjacent states of the door body 30 will be determined, where Δφ approaches 0 infinitely.

[0297] In some embodiments, the direction-altering angle G' is greater than 45° and less than or equal to 90°. As a configurable manner, the direction-altering angle G' belongs to any value of 75° to 80°. The configuration of the hinge assembly containing the above trajectory characteristics enables that, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to 90°, the second direction displacement S 2 changes from being in the first quadrant of the displacement coordinate system AOB to be in the third quadrant thereof, which further increases the inward movement speed of the door body 30 when the door body 30 opens from the direction-altering angle G' to 90°, and can increasingly accelerate the distance and speed of the inward movement of the door body 30, so as to increase the distance between the door front wall 31 and the inner wall of the housing cabinet 100 when the door body 30 is opened to 90°, and reduce the restriction by the housing cabinet 100 on the limit angle to which the door body 30 can continue to open from 90°.

[0298] In addition, with the configuration of the hinge assembly containing the above trajectory characteristics, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the direction-altering angle G', the second direction displacement S 2 is located in the first quadrant of the displacement coordinate system AOB, and the first direction displacement S 1 is located in the second quadrant of the displacement coordinate system AOB, as such, it effectively ensures that the door body 30 performs a displacement in a positive direction along the B axis when opening the door body 30, so that the door body 30 can quickly move forward when opening the door body 30, and the amount of squeezing on the door seal strip 5 by the door body 30 is effectively reduced.

[0299] As described above, during the process of opening the door body 30, the distance between the axial midpoint I and the door front wall 31 is the largest when the door body 30 is opened to the direction-altering angle G'. The above descriptions are made by taking an example in which the direction-altering angle G' < 90°, that is, the direction-altering angle G' is an acute angle.

[0300] In some embodiments, the direction-altering angle G' = 90° (for example, G 7 = 90°). That is, when the door body 30 is opened to 90°, the distance between the axial midpoint I and the door front wall 31 reaches the maximum value. That is, the axial midpoint I moves to the direction-altering midpoint I'.

[0301] Under the condition that the direction-altering angle G' = 90° (for example, G 7 = 90°), during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to 90°, referring to FIG. 31, the first direction displacement S 1 is oriented toward the inner front side (inward and frontward side) of the refrigerator body 10, and the second direction displacement S 2 is oriented toward the outer front side (outward and frontward side) of the refrigerator body 10. The movement process of the door body 30 is the same as the above-mentioned process of opening from the starting angle G 0 (for example, G 0 = 0°) to G' (G' < body 30, relative to the door body 30, the axial midpoint I moves relative to the door body 30 along with the movement of the axial line segment PQ. Herein, the movement trajectory of the axial midpoint I relative to the door body 30 is denoted as an axial midpoint trajectory line. Relative to the door body 30, in the direction pointing from the end of the door body 30 away from the door side wall 32 to the door side wall 32 along the door body 30, the distance between the axial midpoint I and the door front wall 31 first increases and then decreases. That is, the axial midpoint trajectory line starts from its end away from the door side wall 32, extends firstly in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and then extends to its side close to the door front wall 31 and the door side wall 32.

[0302] When the axial midpoint I moves to the direction-altering midpoint I', the distance between the axial midpoint trajectory line and the door front wall 31 is the largest. At this time, the angle to which the door body 30 is opened is the direction-altering angle G'. That is, when the door body 30 is opened to the direction-altering angle G', the axial midpoint I moves to the direction-altering midpoint I' where the distance from the door front wall 31 is the largest. As the door body 30 opens, the movement tendency of the axial midpoint I changes at the direction-altering midpoint I' (it changes from a direction getting closer to the door side wall and getting away from the door front wall to a direction getting closer to the door side wall and the door front wall), and the distance between the axial midpoint I and the door front wall 31 changes at the direction-altering midpoint I' (the distance between the axial midpoint I and the door front wall 31 changes from an increasing tendency to a decreasing tendency).

[0303] In some embodiments, the direction-altering angle G' is a non-obtuse angle. That is, the direction-altering angle G' is an acute angle or a right angle.

[0304] Under the condition in which the direction-altering angle G' is an acute angle, the movement tendency of the axial midpoint I is as follows.

[0305] During the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the direction-altering angle G', the axial midpoint I moves relative to the door body 30 toward the side close to the door side wall 32 and away from the door front wall 31 to the direction-altering midpoint I'.

[0306] During the process of opening the door body 30 from the direction-altering angle G' to the eighth angle G 8 , the axial midpoint I moves relative to the door body 30 from the direction-altering midpoint I' toward the side close to the door side wall 32 and the door front wall 31.

[0307] In some embodiments, under the configuration in which the direction-altering angle G' is a right angle, the movement tendency of the axial midpoint I is as follows:

[0308] During the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to 90°, the axial midpoint I moves relative to the door body 30 toward the side close to the door side wall 32 and away from the door front wall 31 to the direction-altering midpoint I'.

[0309] During the process of opening the door body 30 from 90° to the eighth angle G 8 , the axial midpoint I moves relative to the door body 30 from the direction-altering midpoint I' toward the side close to the door side wall 32 and the door front wall 31.

[0310] In some embodiments, when the opening angle of the door body 30 is φ, the first shaft 41 moves relative to the guide portion 50 in a direction getting closer to the plane where the first body side wall and the access opening are located. The second shaft 42 moves relative to the direction-guiding portion 60 in a direction getting closer to the plane where the first body side wall and the access opening are located. φ belongs to any value of 0° to G max .

[0311] That is, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the maximum angle G max (the eighth angle G 8 ), the first shaft 41 moves relative to the guide portion 50 and the second shaft 42 moves relative to the direction-guiding portion 60 synchronously in a direction getting closer to the first body side wall and the access opening. As such, it enables the door body 30 to move relative to the refrigerator body 10 toward a side close to the second body side wall and away from the access opening while the door body 30 is rotating to open, thereby reducing the restriction by the housing cabinet 100 on the maximum angle to which the door body 30 placed within the housing cabinet 100 can be opened.

[0312] Correspondingly, when the opening angle of the door body 30 is φ, the first central axis P moves relative to the guide portion 50 along the guide trajectory line S in a direction getting closer to the plane where the first body side wall and the access opening are located. The second central axis Q moves relative to the direction-guiding portion 60 along the direction-guiding trajectory line K in a direction getting closer to the plane where the first body side wall and the access opening are located. φ belongs to any value of 0° to G max .

[0313] That is, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the maximum angle G max (the eighth angle G 8 ), the first central axis P moves relative to the guide trajectory line S and the second central axis Q moves relative to the direction-guiding trajectory line K synchronously in a direction getting closer to the first body side wall and the access opening, so that the door body 30 moves relative to the refrigerator body 10 toward a side close to the second body side wall and away from the access opening while the door body 30 is rotating to open, thereby reducing the restriction by the housing cabinet 100 on the maximum angle to which the door body 30 placed within the housing cabinet 100 can be opened.

[0314] In some embodiments, when the opening angle of the door body 30 is φ, the first central axis P is located at the instantaneous guide point P φ of the guide trajectory line S, and the second central axis Q is located at the instantaneous direction-guiding point Q φ of the direction-guiding trajectory line K.

[0315] The tangent line of the guide trajectory line S at the instantaneous guide point P φ is denoted as a first instantaneous tangent line, and the first instantaneous tangent line extends from the instantaneous guide point P φ toward a direction close to the plane where the first body side wall and the access opening are located.

[0316] The tangent line of the direction-guiding trajectory line K at the instantaneous direction-guiding point Q φ is denoted as a second instantaneous tangent line, and the second instantaneous tangent line extends from the instantaneous direction-guiding point Q φ toward a direction close to the plane where the first body side wall and the access opening are located. φ belongs to any value of 0° to G max . The above configuration enables the door body 30 to move relative to the refrigerator body 10 toward a side close to the second body side wall and away from the access opening while the door body 30 is rotating to open, thereby reducing the restriction by the housing cabinet 100 on the maximum angle to which the door body 30 placed within the housing cabinet 100 can be opened.

[0317] In some embodiments, when the opening angle of the door body 30 is φ, the instantaneous displacement of the first central axis P relative to the guide trajectory line S is denoted as a first instantaneous displacement H 1φ , and the instantaneous displacement of the second central axis Q relative to the direction-guiding trajectory line K is denoted as a second instantaneous displacement H 2φ .

[0318] The first instantaneous displacement H 1φ is oriented toward the plane where the first body side wall and the access opening are located, and the second instantaneous displacement H 2φ is oriented toward the plane where the first body side wall and the access opening are located. φ belongs to any value of 0° to G 8 . The above configuration enables the door body 30 to move relative to the refrigerator body 10 toward a side close to the second body side wall and away from the access opening while the door body 30 is rotating to open, thereby reducing the restriction by the housing cabinet 100 on the maximum angle to which the door body 30 placed within the housing cabinet 100 can be opened.

[0319] The guide portion 50 has a first guide boundary line, and the direction-guiding portion has a first direction-guiding boundary line.

[0320] The first guide boundary line is an equidistant line parallel to the guide trajectory line S, and the first direction-guiding boundary line is an equidistant line parallel to the direction-guiding trajectory line K. That is, the first guide boundary line and the guide trajectory line S are lines parallel with each other, and the first direction-guiding boundary line and the direction-guiding trajectory line K are lines parallel with each other.

[0321] In some embodiments, the radius of the first shaft 41 is denoted as a first radius Ri, and the radius of the second shaft 42 is denoted as a second radius R 2 . The distance between the first guide boundary line and the guide trajectory line S is the first radius R 1 . The distance between the first direction-guiding boundary line and the direction-guiding trajectory line K is the second radius R 2 .

[0322] In some embodiments, the first guide boundary line is located at the side of the guide trajectory line S close to or away from the door front wall 31, and the second direction-guiding boundary line is located at the side of the direction-guiding trajectory line K close to or away from the door front wall 31.

[0323] In some embodiments, the first guide boundary line is located at the side of the guide trajectory line S close to the door front wall 31, and the second direction-guiding boundary line is located at the side of the direction-guiding trajectory line K close to the door front wall 31.

[0324] In some embodiments, the first guide boundary line is located at the side of the guide trajectory line S away from the door front wall 31, and the second direction-guiding boundary line is located at the side of the direction-guiding trajectory line K away from the door front wall 31.

[0325] The definitions of the first instantaneous displacement H 1φ and the second instantaneous displacement H 2φ are as follows: when the opening angle of the door body 30 is φ, the first central axis P moves relative to the guide trajectory line S to the instantaneous guide point P φ , and the straight line passing through the instantaneous guide point P φ and being perpendicular to the first guide boundary line intersects the first guide boundary line at the first guide foot point P 1φ . The straight line passing through the instantaneous guide point P φ and being perpendicular to the straight line P φ P ⊥φ where the instantaneous guide point P φ and the first guide foot point P⊥φ are located is denoted as a first guide direction line. The first instantaneous displacement H 1φ is along the first guide direction line and points towards the plane where the first body side wall and the access opening are located.

[0326] Similarly, when the opening angle of the door body 30 is φ, the second central axis Q moves relative to the direction-guiding trajectory line K to the instantaneous direction-guiding point Q φ , and the straight line passing through the instantaneous direction-guiding point Q φ and being perpendicular to the first direction-guiding boundary line intersects the first direction-guiding boundary line at the first direction-guiding foot point Q ⊥φ . The straight line passing through the instantaneous direction-guiding point Q φ and being perpendicular to the straight line Q φ Q ⊥φ where the instantaneous direction-guiding point Q φ and the first direction-guiding foot point Q ⊥φ are located is denoted as a first direction-guiding direction line. The second instantaneous displacement H 2φ is along the first direction-guiding line and points towards the plane where the first body side wall and the access opening are located.

[0327] That is, the first instantaneous displacement H 1φ and the second instantaneous displacement H 2φ are determined by determining the first guide direction line and the first direction-guiding direction line.

[0328] It is to be noted that, when in a structure form in which the guide portion 50 is provided as a guide groove and the direction-guiding portion 60 is provided as a direction-guiding groove, in a projection on the plane where the top wall of the refrigerator body 10 is located, the groove wall of the guide groove is the first guide boundary line, and the groove wall of the direction-guiding groove is the first direction-guiding boundary line. The groove wall of the guide groove and the groove wall of the direction-guiding groove are determined corresponding to the relative positional relationship between the first guide boundary line and the guide trajectory line and the relative positional relationship between the first direction-guiding boundary line and the direction-guiding trajectory line. When determining the first instantaneous displacement H 1φ and the second instantaneous displacement H 2φ , the method is as follows:

[0329] When the opening angle of the door body 30 is φ, a straight line passing through the first central axis P and perpendicular to the groove wall of the guide groove is first determined, and a first guide direction line passing through the first central axis P and perpendicular to the straight line passing through the first central axis P and perpendicular to the groove wall of the guide groove is then determined by using the straight line passing through the first central axis P and perpendicular to the groove wall of the guide groove, so that the first instantaneous displacement H 1φ is determined from the first guide direction line.

[0330] Similarly, when the opening angle of the door body 30 is φ, a straight line passing through the second central axis Q and perpendicular to the groove wall of the direction-guiding groove is first determined, and a first direction-guiding direction line passing through the second central axis Q and perpendicular to the straight line passing through the second central axis Q and perpendicular to the groove wall of the direction-guiding groove is then determined by using the straight line passing through the second central axis Q and perpendicular to the groove wall of the direction-guiding groove, so that the second instantaneous displacement H 2φ is determined from the first direction-guiding direction line.

[0331] For example, when performing the above determination, the determination can be made by taking the groove wall of the guide groove close to the door front wall 31 as the first guide boundary line, and taking the groove wall of the direction-guiding groove close to the door front wall 31 as the first direction-guiding boundary line.

[0332] In another embodiment, the definitions of the first instantaneous displacement H 1φ and the second instantaneous displacement H 2φ are as follows: when the opening angle of the door body 30 is φ, the first central axis P moves relative to the guide trajectory line S to the instantaneous guide point P φ . At this time, the contact point between the first shaft 41 and the first guide boundary line is denoted as an instantaneous guide contact point P Jφ . The straight line passing through the instantaneous guide point P φ and being perpendicular to the straight line P φ P Jφ where the instantaneous guide point P φ and the instantaneous guide contact point P Jφ are located is denoted as a first guide displacement line. The first instantaneous displacement H 1φ is along the first guide displacement line and points towards the plane where the first body side wall and the access opening are located.

[0333] Similarly, when the opening angle of the door body 30 is φ, the second central axis Q moves relative to the direction-guiding trajectory line K to the instantaneous direction-guiding point Q φ , and at this time, the contact point between the second shaft 41 and the first direction-guiding boundary line is denoted as an instantaneous direction-guiding contact point Q Jφ . The straight line passing through the instantaneous direction-guiding point Q φ and being perpendicular to the straight line Q φ Q Jφ where the instantaneous direction-guiding point Q φ and the instantaneous direction-guiding contact point Q Jφ are located is denoted as a first direction-guiding displacement line. The second instantaneous displacement H 2φ is along the first direction-guiding displacement line and points towards the plane where the first body side wall and the access opening are located.

[0334] That is, the first instantaneous displacement H 1φ and the second instantaneous displacement H 2φ are determined by determining the first guide displacement line and the first direction-guiding displacement line.

[0335] It is to be noted that, in a case where the guide portion 50 is provided as a guide groove and the direction-guiding portion 60 is provided as a direction-guiding groove, in a projection on the plane where the top wall of the refrigerator body 10 is located, the groove wall of the guide groove is the first guide boundary line, and the groove wall of the direction-guiding groove is the first direction-guiding boundary line. At this time, the groove wall of the guide groove and the groove wall of the direction-guiding groove can be determined according to the relative positional relationship between the first guide boundary line and the guide trajectory line and the relative positional relationship between the first direction-guiding boundary line and the direction-guiding trajectory line. For example, when determining the first instantaneous displacement H 1φ and the second instantaneous displacement H 2φ , the method is as follows.

[0336] When the opening angle of the door body 30 is φ, an instantaneous guide point P φ where the first central axis P is located and an instantaneous guide contact point P Jφ between the first shaft 41 and the groove wall of the guide groove are first determined, and a first guide displacement line passing through the first central axis P and perpendicular to the straight line P φ P Jφ where the instantaneous guide point P φ and the instantaneous guide contact point P Jφ are located is then determined by using the straight line P φ P Jφ where the instantaneous guide point P φ and the instantaneous guide contact point P Jφ are located, so that the first instantaneous displacement is determined from the first guide displacement line.

[0337] Similarly, when the opening angle of the door body 30 is φ, an instantaneous direction-guiding point Q φ where the second central axis Q is located and an instantaneous direction-guiding contact point Q Jφ between the first shaft 41 and the groove wall of the guide groove are first determined, and a first direction-guiding displacement line passing through the second central axis Q and perpendicular to the straight line Q φ Q Jφ where the instantaneous direction-guiding point Q φ and the instantaneous direction-guiding contact point Q Jφ are located is then determined by using the straight line Q φ Q Jφ where the instantaneous direction-guiding point Q φ and the instantaneous direction-guiding contact point Q Jφ are located, so that the second instantaneous displacement is determined from the first direction-guiding displacement line.

[0338] For example, when performing the above determinations of the first instantaneous displacement H 1φ and the second instantaneous displacement H 2φ , the determinations can be made by taking the groove wall of the guide groove close to the door front wall 31 as the first guide boundary line, and taking the groove wall of the direction-guiding groove close to the door front wall 31 as the first direction-guiding boundary line.

[0339] In some embodiments, when the opening angle of the door body 30 is φ, the axial midpoint I moves relative to the door body 30 in a direction getting closer to the plane where the first body side wall and the access opening are located. φ belongs to any value of 0° to G 8 (Gmax).

[0340] That is, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the eighth angle G 8 (G 8 = the maximum angle G max ), the axial midpoint I moves relative to the door body 30 in a direction getting closer to the plane where the first body side wall and the access opening are located. As such, it enables the door body 30 to move relative to the refrigerator body 10 toward a side close to the second body side wall and away from the access opening while the door body 30 is rotating to open, thereby reducing the restriction by the housing cabinet 100 on the maximum angle to which the door body 30 placed within the housing cabinet 100 can be opened.

[0341] In some embodiments, when the opening angle of the door body is φ, the instantaneous displacement of the axial midpoint relative to the axial midpoint trajectory line is denoted as an instantaneous midpoint displacement H Iφ . The instantaneous midpoint displacement H Iφ is oriented toward the plane where the first body side wall and the access opening are located. φ belongs to any value of 0° to G max . The above configuration enables the door body 30 to move relative to the refrigerator body 10 toward a side close to the second body side wall and away from the access opening while the door body 30 is rotating to open, thereby reducing the restriction by the housing cabinet 100 on the maximum angle to which the door body 30 placed within the housing cabinet 100 can be opened.

[0342] When the opening angle of the door body 30 is φ, the axial midpoint I is located at the instantaneous midpoint I φ of the axial midpoint trajectory line. The tangent line of the axial midpoint trajectory line at the instantaneous midpoint I φ is denoted as an instantaneous midpoint tangent line, and the instantaneous midpoint tangent line extends from the instantaneous midpoint I φ toward a direction close to the plane where the first body side wall and the access opening are located. The instantaneous midpoint displacement H Iφ is along the tangent line of the instantaneous midpoint and is oriented toward the plane where the first body side wall and the access opening are located.

[0343] In some embodiments, in a direction perpendicular to the door side wall 32, the distance between the starting midpoint I 0 and the direction-altering midpoint I' is denoted as |I 0 I'|', and the distance between the direction-altering midpoint I' and the eighth midpoint I 8 is denoted as |I'I 8 |'. |I 0 I'|':|I'I 8 |' belongs to any value of 1 to 3.

[0344] In some embodiments, in the door body coordinate system X 1 O 1 Y 1 , the slope of the straight line where the starting midpoint I 0 and the direction-altering midpoint I' are located is denoted as F' I1 , and the slope of the straight line where the direction-altering midpoint I' and the eighth midpoint I 8 are located is denoted F' I2 . F' I2 > 0 > F' I1 , 1 > F' I2 > |F' I1 | > 0.

[0345] In some embodiments, 0.8 > F' I2 > |F' I1 | > 0.

[0346] In some embodiments, in the door body coordinate system X 1 O 1 Y 1 , the function of the axial midpoint trajectory line is a concave function. That is, the entire axial midpoint trajectory line protrudes toward the side close to the door rear wall.

[0347] In some embodiments, the point on the axial midpoint trajectory line having the greatest distance from the door front wall 31 is denoted as a direction-altering midpoint I', and the point on the guide trajectory line S having the greatest distance from the door front wall 31 is the fourth guide point P 4 , and the point on the direction-guiding trajectory line K having the greatest distance from the door front wall 31 is the sixth direction-guiding point Q 6 . Referring to FIG. 5, the direction-altering midpoint I' is located at the side of the straight line P 4 Q 6 where the fourth guide point P 4 and the sixth direction-guiding point Q 6 are located close to the door side wall 32.

[0348] In some embodiments, the direction-altering midpoint I' is close to the straight line P 4 Q 6 .

[0349] In some embodiments, the distance between the direction-altering midpoint I' and the straight line P 4 Q 6 is less than 1 mm.

[0350] In some embodiments, in the ΔI'Q 6 P 4 using the fourth guide point P 4 , the sixth direction-guiding point Q 6 , and the direction-altering midpoint I' as vertexes, ∠I'P 4 Q 6 is denoted as a second included angle σ 2 , and ∠I'Q 6 P 4 is denoted as a third included angle σ 3 . The second included angle σ 2 = ∠I'P 4 Q 6 belongs to any value of 6° to 8, the third included angle σ 3 = ∠I'Q 6 P 4 belongs to any value of 4° to 6°. ∠ Q 6 I'P 4 belongs to any value of 168° to 170°.

[0351] In some embodiments, the foot of the altitude of the ΔI'Q 6 P 4 drawn from the direction-altering midpoint I' to the edge Q 6 P 4 is denoted as I". The length of the line segment Q 6 I" is denoted as |Q 6 I"|, the length of the line segment I"P 4 is denoted as |I"P 4 |, then |Q 6 I"|:|I"P 4 | belongs to any value of 1 to 2.

[0352] In some embodiments, the direction-altering midpoint I' is located on the straight line P 4 Q 6 where the fourth guide point P 4 and the sixth direction-guiding point Q 6 are located. That is, the direction-altering midpoint I', the fourth guide point P 4 , and the sixth direction-guiding point Q 6 are collinear, and the straight line where the direction-altering midpoint I', the fourth guide point P 4 , and the sixth direction-guiding point Q 6 are located is approximately perpendicular to the door front wall 31.

[0353] For example, the direction-altering midpoint I', the fourth guide point P 4 , and the sixth direction-guiding point Q 6 are collinear, and the straight line where the direction-altering midpoint I', the fourth guide point P 4 , and the sixth direction-guiding point Q 6 are located is approximately parallel to the door side wall 32. The approximately parallel to includes the case where the included angle between the two are less than or equal to 1°.

[0354] In some embodiments, referring to FIG. 5, FIG. 16 and FIG. 44, the axial midpoint trajectory line formed by the door body 30 opening from the starting angle G 0 (for example, G 0 = 0°) to G 8 has two intersection points with the midplane C. The axial midpoint trajectory line includes a first axial midpoint trajectory segment, and the first axial midpoint trajectory segment extends from its one end away from the door side wall 32 to the direction-altering midpoint I' in a direction away from the door front wall 31 and close to the door side wall 32. The axial midpoint trajectory line further includes a second axial midpoint trajectory segment, and the second axial midpoint trajectory segment extends from the direction-altering midpoint I' to the eighth midpoint I 8 in a direction close to the door front wall 31 and the door side wall 32.

[0355] In some embodiments, during the entire process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the maximum angle G max (the eighth angle G 8 ), the axial midpoint I first moves relative to the door body 30 towards the side close to the door side wall 32 and away from the door front wall 31, and passes through the midplane C during that moving process, and then moves towards the side close to the door side wall 32 and the door front wall 31, and passes through the midplane C again during that moving process.

[0356] The first axial midpoint trajectory segment intersects the midplane C at the first intersection point li', and the second axial midpoint trajectory segment intersects the midplane C at the second intersection point I 2 '. The direction-altering midpoint I' is located at the side of the midplane C away from the door front wall 31, and the eighth midpoint I 8 and the starting midpoint I 0 are both located at the side of the midplane C close to the door front wall 31.

[0357] The distance between the direction-altering midpoint I' and the midplane C is denoted as τ 1 , the distance between the starting midpoint I 0 and the midplane C is denoted as τ 2 , and the distance between the eighth midpoint I 8 and the midplane C is denoted as τ 3 .

[0358] In some embodiments, the direction-altering midpoint I' is close to the midplane C. As a configurable manner, τ 1 belongs to any value of 0 mm to 2 mm. For example, τ 1 may be any value of 0, 0.2, 0.4, 0.6, 0.8, or 2, etc.

[0359] In some embodiments, τ 2 : τ 1 belongs to any value of 3 to 4, and τ 3 : τ 1 belongs to any value of 1 to 2. For example, τ 2 : τ 1 may be 3.0, 3.1, 3.3, 3.5, 3.7, 3.9, or 4.0, etc. τ 3 : τ 1 may be 1.0, 1.1, 1.3, 1.5, 1.7, 1.9, or 2.0, etc.

[0360] In some embodiments, G' : G 8 belongs to any value of 0.6 to 0.75. For example, G' : G 8 may be 0.6, 0.65, 0.7, or 0.75, etc.

[0361] It is understandable that the above limitations allow the axial midpoint I to remain close to the midplane C during the movement process, enhancing the stability of the door body 30.

[0362] In some embodiments, when the door body 30 is opened to G 1 ', the axial midpoint I moves to the first intersection point I 1 ', and the axial midpoint I moves to the midplane C. When the door body 30 is opened to G 2 ', the axial midpoint I moves to the second intersection point I 2 ', and the axial midpoint moves onto the midplane C. G 1 ' < G 2 '.

[0363] During the process of opening the door body 30 from G 1 ' to G 2 ', the axial midpoint I is located at the side of the midplane C away from the door front wall 31. During the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to G 1 ', and during the process of opening the door body 30 from G 2 ' to G 8 , the axial midpoint I is located at the side of the midplane C close to the door front wall 31.

[0364] In some embodiments, G 1 ' : G' belongs to any value of 0.4 to 0.6, and G' : G 8 belongs to any value of 0.6 to 0.75. For example, G 1 ' : G' may be 0.4, 0.5, or 0.6, etc., and G' : G 8 may be 0.6, 0.7, or 0.75, etc. As such, the stability of the door body 30 is further enhanced.

[0365] In some embodiments, when the door body 30 is opened to G 3 ', the axial midpoint I moves to I 3 ', and the distance between the axial midpoint (I 3 ') and the midplane C is τ 3 . That is, the distance between the axial midpoint I and the midplane C when the door body 30 is opened to G 3 ' is equal to the distance between the axial midpoint I and the midplane C when the door body 30 is opened to G 8 (G max ).

[0366] In some embodiments, during the process of opening the door body 30 from G 3 ' to G 8 , the axial midpoint I is located close to the midplane C. For example, the distance between the axial midpoint I and the midplane C is less than 3 mm. That is, during the process of opening the door body 30 from G 3 ' to G 8 , the axial midpoint I is located close to the midplane C. The above configuration enhances the stability during the opening of the door body 30.

[0367] In some embodiments, G 3 ' : G 8 belongs to any value of 0.16 to 0.2. G 3 ' : G' belongs to any value of 0.24 to 0.3. That is, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to G 8 , in most (for example, the opening angle is 0.8 to 0.94) of the process, the axial midpoint I is located close to the midplane C of the door body 30, thereby increasing the stability of the opening of the door body 30.

[0368] In some embodiments, during the process of opening the door body 30 from G 3 ' to G 8 , the midplane C is positioned between the first central axis P and the second central axis Q, so that the respective parts of the door body 30 are subjected to uniform forces during the opening process of the door body 30, and the stability of the opening of the door body 30 is improved.

[0369] In some embodiments, referring to FIGS. 45 to 47, the angle bisector plane of the included angle formed by the door front wall 31 and the door side wall 32 is denoted as a first angle bisector plane V 1 . The angle bisector plane of the included angle formed by the door rear wall 33 and the door side wall 32 is denoted as a second angle bisector plane V 2 . In the projection on the plane where the top wall of the refrigerator body 10 is located, the first angle bisector plane V 1 and the second angle bisector plane V 2 intersect with each other at the intersection point J.

[0370] During the process of opening the door body 30 relative to the refrigerator body 10, the first angle bisector plane V 1 and the second angle bisector plane V 2 move along with the door body 30 relative to the refrigerator body 10, and during the opening process of the door body 30, the first angle bisector plane V 1 and the second angle bisector plane V 2 remain stationary relative to the door body 30.

[0371] In some embodiments, the dihedral angle formed by the plane where the door front wall 31 is located and the plane where the door side wall 32 is located is 90°, and the dihedral angle formed by the plane where the door rear wall 33 is located and the plane where the door side wall 32 is located is also 90°.

[0372] In some embodiments, referring to FIGS. 45 to 46, during the process of opening the door body 30, when the first central axis P moves to the fourth guide point P 4 where the distance between the guide trajectory line S and the door front wall 31 is the largest, the opening angle of the door body 30 is a fourth angle G 4 . Relative to the door body 30, the axial midpoint I moves to the fourth midpoint I 4 . The fourth midpoint I 4 coincides with the intersection point J. It is to be noted that, the fact that the fourth midpoint I 4 coincides with the intersection point J includes a case where the distance between the two points is 0.3 mm or less.

[0373] That is, during the process of opening the door body 30, when the first central axis P moves to the fourth guide point P 4 where the distance between the guide trajectory line S and the door front wall 31 is the largest, the axial midpoint I moves to the intersection point J of the first angle bisector plane V 1 and the second angle bisector plane V 2 .

[0374] In some embodiments, the distance between the fourth midpoint I 4 and the intersection point J is denoted as λ 1 , and λ 1 belongs to any value less than or equal to 1 mm.

[0375] In some embodiments, when the opening angle of the door body 30 is the fourth angle G 4 , and the first central axis P moves to the fourth guide point P 4 where the distance between the guide trajectory line S and the door front wall 31 is the largest, the included angle between the straight line where the axial line segment PQ is located and the first angle bisector plane V 1 is less than 30°.

[0376] In some embodiments, the fourth angle G 4 : the direction-altering angle G' belongs to any value of 0.4 to 0.6. For example, the fourth angle G 4 : the direction-altering angle G' may be 0.4, 0.5, or 0.6, etc.

[0377] In some embodiments, referring to FIG. 46, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the fourth angle G 4 , the axial midpoint I is located at the side of the second angle bisector plane V 2 away from the door side wall 32, and the axial midpoint I is close to the second angle bisector plane V 2 .

[0378] In some embodiments, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the fourth angle G 4 , the maximum value of the distance between the axial midpoint I and the second angle bisector plane V 2 is denoted as λ 2 . λ 2 belongs to any value of 0 mm to 2 mm. For example, λ 2 may be 0, 0.5, 1, 1.5, or 2, etc.

[0379] In some embodiments, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the fourth angle G 4 , the distance between the axial midpoint I and the second angle bisector plane V 2 increases and then decreases.

[0380] In some embodiments, referring to FIGS. 45 to 46, there is only one intersection point between the axial midpoint trajectory line and the first angle bisector plane V 1 .

[0381] In some embodiments, there is only one intersection point between the axial midpoint trajectory line and the second angle bisector plane V 2 .

[0382] The intersection point between the axial midpoint trajectory line and the first angle bisector plane V 1 is denoted as a first point I J1 , and the intersection point between the axial midpoint trajectory line and the second angle bisector plane V 2 is denoted as a second point I J2 .

[0383] In some embodiments, the distance between the first point I J1 and the second angle bisector plane V 2 belongs to any value of 0 mm to 0.5 mm, and the distance between the second point I J2 and the first angle bisector plane V 1 belongs to any value of 0 mm to 1 mm. For example, the distance may be 0, 0.2, 0.4, 0.6, 0.8, or 1, etc.

[0384] In some embodiments, the first point I J1 and the second point I J2 are both close to the intersection point J. The distance between the first point I J1 and the intersection point J and the distance between the second point I J2 and the intersection point J each belongs to any value of 0 mm to 1 mm. For example, the above distances may each be 0, 0.2, 0.4, 0.6, 0.8, or 1, etc.

[0385] In some embodiments, the distance between the first point I J1 and the intersection point J is less than 0.5 mm, and the distance between the second point I J2 and the intersection point J is less than 1 mm.

[0386] In some embodiments, referring to FIG. 47, when the door body 30 is at the starting angle G 0 (for example, G 0 = 0°), the first shaft 41 and the second shaft 42 are separately located at two opposite sides of the second angle bisector plane V 2 , and the first shaft 41 and the second shaft 42 are both located at the side of the first angle bisector plane V 1 close to the door front wall 31. As such, during the opening or closing process of the door body 30, the door body 30 generates a larger lateral displacement (in a direction perpendicular to the first body side wall) relative to the refrigerator body 10.

[0387] In some embodiments, when the door body 30 is at the starting angle G 0 (for example, G 0 = 0°), the axial midpoint I (the starting midpoint I 0 ) is located close to the second angle bisector plane V 2 .

[0388] In some embodiments, when the door body 30 is at the starting angle G 0 (for example, G 0 = 0°), the distance between the axial midpoint I (the starting midpoint I 0 ) and the second angle bisector plane V 2 belongs to any value of 0 mm to 2 mm. For example, the distance may be 0, 0.2, 0.5, 0.6, 1, 1.5, or 2, etc.

[0389] In some embodiments, when the door body 30 is at the starting angle G 0 (for example, G 0 = 0°), the distance between the first central axis P and the second angle bisector plane V 2 is denoted as λ P , and the distance between the second central axis Q and the second angle bisector plane V 2 is denoted as λ Q . λ P : λ Q ≤ 1.

[0390] In some embodiments, λ P : λ Q belongs to any value of 0.4 to 0.6. For example, the ratio may be 0.4, 0.45, 0.5, 0.55, or 0.6, etc.

[0391] In some embodiments, the first hinge member is provided with a first limiting member, and the second hinge member is provided with a second limiting member. The second limiting member is configured to cooperate with the first limiting member when the door body 30 is opened to the maximum angle G max (the eighth angle G 8 ), to restrict the first hinge member from continuing to rotate and open relative to the second hinge member, thereby avoiding the door body 30 of the refrigerator placed within the housing cabinet 100 from continuing to open and colliding with the housing cabinet 100 and thus causing damage to the door body 30.

[0392] In some embodiments, the second limiting member is a limiting portion provided at the lower end of the door body 30. The first limiting member is configured as a limiting surface located at an end of the hinge plate 40 away from the refrigerator body 10 and close to the first body side wall. When the door body 30 is rotated to the maximum allowable position (the opening angle G max of the door body), the limiting portion abuts against the limiting surface, thereby stopping the door body 30 from continuing to rotate.

[0393] In some embodiments, when the first central axis P moves to the eighth positioning point P 8 and the second central axis Q moves to the eighth direction-guiding point Q 8 , the limiting portion at the lower end of the door body 30 abuts against the limiting surface of the hinge plate 40, so that the door body 30 is opened to the maximum angle, and the door body 30 placed within the housing cabinet 100 is prevented from colliding with the housing cabinet and causing damage to the door body 30 when the door body 30 is opened to the maximum angle.

[0394] In some embodiments, referring to FIGS. 5 to 15, in this embodiment, a first reference plane M 1 and a second reference plane M 2 are further defined. Referring to FIG. 15, the first reference plane M 1 is a plane parallel to the reference plane M 0 and perpendicular to the plane where the access opening is located, and the first reference plane M 1 is a plane where the inner wall of the housing cabinet 100 adjacent to the first body side wall is located. That is, the first reference plane M 1 is parallel to the first body side wall, and the distance between the first reference plane M 1 and the first body side wall is α'. The second reference plane M 2 is the plane where the access opening of the storage compartment is located. During the process of opening the door body 30 relative to the refrigerator body 10, the first reference plane M 1 and the second reference plane M 2 will not move accordingly, rather, they are reference planes that remain stationary relative to the refrigerator body 10.

[0395] During the process of opening the door body 30, the first side edge W moves along with the opening of the door body 30, and the movement trajectory of the first side edge W is denoted as a first side edge trajectory line. In the projection on the top wall of the refrigerator body 10, during the process of opening the door body 30, the first side edge W first moves in a direction getting closer to the first reference plane M 1 and the second reference plane M 2 , and then moves in a direction getting away from the first reference plane M 1 and getting closer to the second reference plane M 2 .

[0396] In some embodiments, when the door body 30 is opened to G 2 , the first central axis P moves to the second guide point P 2 of the guide trajectory line S. At this time, the distance between the first side edge W and the reference plane M 0 is maximum. In this way, the distance that the first side edge W approaches the first reference plane M 1 can be controlled to be smaller than the minimum distance between the refrigerator and the inner wall of the housing cabinet 100 when the door body 30 of the refrigerator is in the closed state, thereby avoiding the door body 30 from interfering with the housing cabinet 100.

[0397] In some embodiments, G 2 ∈any value of [16°, 25°]. That is, when the door body 30 is opened to a smaller angle, the first side edge W has already moved to a position where the distance between the first side edge W and the first body side wall is the farthest during the entire opening process of the door body 30.

[0398] In some embodiments, the guide trajectory line S includes a first guide line. The guide trajectory line S further includes a second guide line, and the second guide line is connected to one end of the first guide line close to the door side wall 32.

[0399] In some embodiments, the first guide line is a straight line, and the second guide line is a curved line. The second guide point P 2 is a connection point between the first guide line and the second guide line. That is, the guide trajectory line S extends from the starting guide point P 0 to the second guide point P 2 along a straight line in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and then extends from the second guide point P 2 to the fourth guide point P 4 along a curved line in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and then extends from the fourth guide point P 4 to the eighth guide point P 8 along a curved line in a direction getting closer to the door front wall 31 and the door side wall 32.

[0400] In some embodiments, in combination with the above embodiment in which the guide trajectory line S includes the first guide line in a straight line shape and the second guide line in a curved line shape, the above first stage of the process of rotating the door body 30 to open from the starting angle G 0 (can be set as the closed state) to the fourth angle G 4 can be divided into a first sub-stage and a second sub-stage.

[0401] For example, in the first sub-stage, the door body 30 is opened from the starting angle G 0 (can be set as the closed state) to the second angle G 2 , the first central axis P performs a linear movement from the starting guide point P 0 along the guide trajectory line S in a direction getting closer to the door rear wall 33 and the door side wall 32, and the second central axis Q performs a curvilinear movement from the starting direction-guiding point Q 0 along the direction-guiding trajectory line K in a direction getting closer to the door rear wall 33 and the door side wall 32.

[0402] In the second sub-stage, the door body 30 is opened from the second angle G 2 to the fourth angle G 4 , and the first central axis P performs a curvilinear movement from the starting guide point P 0 along the guide trajectory line S in a direction getting closer to the door rear wall 33 and the door side wall 32, and the second central axis Q performs a curvilinear movement from the starting direction-guiding point Q 0 along the direction-guiding trajectory line K in a direction getting closer to the door rear wall 33 and the door side wall 32.

[0403] The relative movement situations in the above first sub-stage and the second sub-stage are the same as those in the above process of opening the door body 30 from the starting angle G 0 (can be set as the closed state) to the fourth angle G 4 , which will not be repeated here.

[0404] In some embodiments, in combination with the embodiment of providing a first guide line in a straight line shape and a second guide line in a curved line shape in the guide trajectory line S, during the process of opening the door body 30, when the first central axis P moves to the connection point between the first guide line and the second guide line, the distance between the first side edge W and the reference plane M 0 is maximum. That is, during the process of opening the door body 30, when the first central axis P moves to the end point of the straight-line-shaped first guide line close to the door side wall 32, the distance between the first side edge W and the reference plane M 0 is maximum.

[0405] In some embodiments, when the door body 30 is opened to G 4 , the first central axis P moves to the position (the fourth guide point P 4 ) at which the distance between the guide trajectory line S and the door front wall 31 is maximum. At this time, the distance between the first side edge W and the reference plane M 0 is maximum.

[0406] During the process of opening the door body 30, the second side edge N moves along with the opening of the door body 30, and the movement trajectory of the second side edge N is denoted as a second side edge trajectory line. In the projection on the top wall of the refrigerator body 10, during the process of opening the door body 30, the second side edge N first moves in a direction getting away from the first reference plane M 1 and getting closer to the second reference plane M 2 , and then moves in a direction getting away from the first reference plane M 1 and the second reference plane M 2 .

[0407] In some embodiments, when the door body 30 is opened to G 2 , the first central axis P moves to the second guide point P 2 of the guide trajectory line S. At this time, the distance between the second side edge N and the second reference plane M 2 is minimal.

[0408] In some embodiments, G 2 ∈any value of [16°, 25°]. For example, G F may be 16°, 18°, 20°, 22°, 24°, or 25°, etc. That is, when the door body 30 is opened to a smaller angle, the second side edge N has already moved to a position where the distance between the second side edge N and the second reference plane M 2 is minimum during the entire opening process of the door body 30. In this way, the distance that the second side edge approaches the access opening is controlled, and the second side edge N is avoided from interfering with the refrigerator body 10.

[0409] In some embodiments, in combination with the embodiment of providing a first guide line in a straight line shape and a second guide line in a curved line shape in the guide trajectory line S, during the process of opening the door body 30, when the first central axis P moves to the connection point between the first guide line and the second guide line, the distance between the first side edge W and the reference plane M 0 is maximum. That is, during the process of opening the door body 30, when the first central axis P moves to the end point of the straight-line-shaped first guide line close to the door side wall 32, the distance between the second side edge N and the plane (the second reference plane M 2 ) where the access opening is located is minimal.

[0410] During the process of opening the door body 30, the side seal edge F moves along with the opening of the door body 30, and the movement trajectory of the side seal edge F is denoted as a side seal edge trajectory line. In the projection on the top wall of the refrigerator body 10, during the process of opening the door body 30, the side seal edge F first moves in a direction getting away from the first reference plane M 1 and getting closer to the second reference plane M 2 , then moves in a direction getting away from the first reference plane M 1 and the second reference plane M 2 , and then moves in a direction getting closer to the first reference plane M 1 and getting away from the second reference plane M 2 . The above configuration enables the side seal edge F to move outward in the final stage of opening of the door body 30, thus can prevent the door body 30 from obstructing the access opening due to the inward movement of the side seal edge F in the early stage of opening of the door body 30, thereby increasing the utilization ratio by the storage drawer on the space of the lateral dimension of the storage compartment.

[0411] In some embodiments, when the door body 30 is opened to G 1 , the distance between the side seal edge F and the second reference plane M 2 is minimal.

[0412] In some embodiments, G 1 ∈any value of [10°, 15°]. That is, when the door body 30 is opened to a smaller angle, the side seal edge F has already moved to a position where the distance between the side seal edge F and the second reference plane M 2 is minimum during the entire opening process of the door body 30. As such, the door seal strip 5 is enabled to quickly move away from the refrigerator body 10, and the amount of squeezing on the door seal strip 5 during the opening process of the door body 30 is reduced.

[0413] In some embodiments, when the door body 30 is opened to G F , the distance between the side seal edge F and the first body side wall is maximum. In some embodiments of the present disclosure, the plane passing through the side seal edge F when door body 30 is opened to G F and being parallel to the first body side wall is defined as a third reference plane M 3 , and during the process of opening the door body 30 relative to the refrigerator body 10, the third reference plane M 3 will not move accordingly, and it is a reference plane that remains stationary relative to the refrigerator body 10.

[0414] In some embodiments, G F belongs to any value of 90° to 95°. For example, G F may be 90°, 91°, 92°, 93°, 94°, or 95°, etc.

[0415] It can be understood that, the above limitation makes the distance between the side seal edge F and the first body side wall be maximum when the door body 30 is opened to about 90°. In this way, the side seal edge F still has a space to move outward in the later stage of opening of the door body 30, thereby more compensating for the inward displacement of the side seal edge F in the early stage of opening of the door body 30, so as to further reduce the obstructing by the door body 30 on the access opening.

[0416] In some embodiments, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the maximum angle G max (the eighth angle G 8 ), the second side edge N is always located at the side of the third reference plane M 3 close to the first body side wall.

[0417] In some embodiments, during the process of opening the door body 30 to the maximum angle G max (the eighth angle G 8 ), the door seal edge F is located between the second side edge N and the third reference plane M 3 (including on the third reference plane M 3 ), as such, it is avoided that the angle of the door body 30 is opened to be too large so that the second side edge N becomes the main factor influencing the obstruction on the transverse dimension of the access opening. That is, during the opening process of the door body 30, the second side edge N is always located at the outer side of the side seal edge F. That is, during the process of opening the door body 30 from G F to the maximum angle G max (the eighth angle G 8 ), as the opening angle of the door body 30 increases, the obstruction by the door seal strip 5 on the access opening gradually decreases, and the obstruction by the door body 30 on the access opening gradually decreases, so that the lateral dimension of the drawer installed in the storage compartment can be increased, the utilization rate of the space of the storage compartment can be increased, and the user can take out or place in articles stored on the shelf of the door body conveniently.

[0418] In some embodiments, during the opening process of the door body 30, the sum of the forces applied to the first shaft 41 and the second shaft 42 remains relatively constant.

[0419] In some embodiments, the sum of the forces applied to the first shaft 41 and the second shaft 42 fluctuates in the range of [F-3, F+3]. The unit is Newton.

[0420] In some embodiments, during the closing process of the door body 30, when the door body 30 is closed to G 1 ", the sum of the acting forces applied to the first shaft 41 and the second shaft 42 begins to increase as the door body 30 continues to close.

[0421] In some embodiments, when the door body 30 is closed from G 1 " to G 2 ", the sum of the acting forces applied to the first shaft 41 and the second shaft 42 increases to a maximum value during the entire opening or closing process of the door body 30. As the door body 30 continues to close from G 2 ", the sum of the acting forces applied to the first shaft 41 and the second shaft 42 begins to decrease.

[0422] In some embodiments, the sum of the acting forces applied to the first shaft 41 and the second shaft 42 when the door body 30 is closed from G 2 " to G 3 " is basically equal to the sum of the acting forces when the door body 30 is closed to G 1 ".

[0423] In some embodiments, the first hinge member is provided with a first cooperating portion, and the second hinge member is provided with a second cooperating portion. The second cooperating portion is configured to cooperate with the first cooperating portion to unlock or lock the door body 30 with the refrigerator body 10.

[0424] In some embodiments, when the door body 30 is closed to G 1 '', the first cooperating portion is in contact with the second cooperating portion. When the door body 30 is closed to G 3 ", the first cooperating portion is locked with the second cooperating portion. During the process of closing the door body 30 from G 1 " to G 3 '', the second cooperating portion first undergoes elastic deformation and converts it into elastic potential energy, and then releases the elastic potential energy to drive the door body 30 to automatically close.

[0425] In some embodiments, when the door body 30 is closed to G 2 ", the elastic deformation amount of the second cooperating portion is maximal.

[0426] In some embodiments, the guide trajectory line S includes a first guide line. The guide trajectory line S further includes a second guide line connected to one end of the first guide line close to the door side wall 32. The first guide line is a circular arc, and the second guide line is a curved line.

[0427] Compared with the manner where the first guide line is provided as a circular arc, the manner where the first guide line is a straight line has the following advantages. When the first guide line is provided as a straight line, the first shaft 41 can move relative to the door body 30 toward the side close to the door rear wall 33, and the effect of reducing wear on the first shaft 41 due to subjecting a force is better. This is for the reason that, in actual production and processing, compared with processing a straight line, it is more difficult for a curved line (including a circular arc) to control processing errors and the detectability is worse, which easily leads to unsmooth opening or closing of the door body 30.

[0428] In some embodiments, the guide trajectory line S includes a first guide line and a second guide line connected to one end of the first guide line close to the door side wall 32. The first guide line is a circular arc, and the second guide line is a circular arc.

[0429] In some embodiments, the guide trajectory line S includes a first guide line and a second guide line connected to one end of the first guide line close to the door side wall 32. The first guide line is a straight line, and the second guide line is a circular arc.

[0430] In some embodiments, the first guide line and the second guide line are connected tangentially.

[0431] In some embodiments, the first guide line extends from one end of the first guide line away from the door side wall 32 toward a direction close to the door side wall 32 and the door rear wall 33, and the second guide line extends from one end of the first guide line close to the door side wall 32 first toward a direction close to the door side wall 32 and the door rear wall 33, and then toward a direction close to the door side wall 32 and the door front wall 31.

[0432] In some embodiments, referring to FIGS. 48 to 50, the guide trajectory line S includes a first guide line (P 0 P 2 ), a second guide line (P 2 P 2 ') connected to one end of the first guide line close to the door side wall 32, and a third guide line (P 2 'P 8 ) connected to one end of the second guide line close to the door side wall 32. The first guide line is a straight line, the second guide line is a circular arc, and the third guide line is a straight line. The connection point between the first guide line and the second guide line is P 2 , and the connection point between the second guide line and the third guide line is P 2 '.

[0433] In some embodiments, the linear-line-shaped first guide line extends from one end of the first guide line away from the door side wall 32 toward a direction close to the door side wall 32 and the door rear wall 33, the circular-arc-shaped second guide line extends from one end of the first guide line close to the door side wall 32 first toward a direction close to the door side wall 32 and the door rear wall 33, and then toward a direction close to the door side wall 32 and the door front wall 31, and the linear-line-shaped third guide line extends toward a direction close to the door side wall 32 and the door front wall 31.

[0434] In some embodiments, the first guide line, the second guide line, and the third guide line are sequentially tangentially connected.

[0435] In some embodiments, the center of the circle where the circular-arc-shaped second guide line (P 2 P 2 ') lies is close to the straight line P 0 P 8 where the starting guide point P 0 and the eighth guide point P 8 are located.

[0436] In some embodiments, the center of the circle where the circular-arc-shaped second guide line (P 2 P 2 ') lies is located on the straight line P 0 P 8 where the starting guide point P 0 and the eighth guide point P 8 are located.

[0437] In some embodiments, the distance between the center of the circle where the circular-arc-shaped second guide line (P 2 P 2 ') lies and the straight line P 0 P 8 belongs to any value of 0 mm to 2 mm.

[0438] In some embodiments, the center of the circle where the circular-arc-shaped second guide line (P 2 P 2 ') lies is located at the side of the straight line P 0 P 8 close to the door rear wall 33 and the door side wall 32.

[0439] In some embodiments, the included angle between the straight-line-shaped first guide line (P 0 P 2 ) and the door front wall 31 belongs to any value of 17° to 21°. The included angle between the straight-line-shaped third guide line (P 0 P 2 ') and the door front wall 31 belongs to any value of 65° to 70°.

[0440] In some embodiments, the center of the circle where the circular-arc-shaped second guide line lies is denoted as O 2 , and the included angle between the straight line O 2 P 2 and the door front wall 31 is any value of 69° to 73°. The included angle between the straight line O 2 P 2 ' and the door front wall 31 is any value of 20° to 25°. The above defines the extension trend of the guide trajectory line S, so that the guide trajectory line S extends smoothly, and matches the direction-guiding trajectory line K, to guide the first central axis P and the second central axis Q to move.

[0441] In some embodiments, ∠P 2 O 2 P 2 ' belongs to any value of 83° to 90°. For example, ∠P 2 O 2 P 2 ' may be 83°, 84°, 85°, 86°, 87°, 88°, 89°, or 90°, etc.

[0442] In some embodiments, referring to FIG. 50, the included angle between the straight line P 0 P 4 where the starting guide point P 0 and the fourth guide point P 4 are located and the straight line P 4 P 8 where the fourth guide point P 4 and the eighth guide point P 8 are located is denoted as γ 1 , and γ 1 = ∠P 0 P 4 P 8 is an obtuse angle.

[0443] In some embodiments, γ 1 belongs to any value of 100° to 120°. For example, γ 1 may be 100°, 105°, 110°, 115°, or 120°, etc. In some embodiments, γ 1 belongs to any value of 110° to 114°. For example, γ 1 may be 110°, 111°, 112°, 113°, or 114°, etc.

[0444] The above limitations on γ 1 limit the extension tendency of the guide trajectory line S, so that the guide trajectory line S cooperates with the direction-guiding trajectory line such that the door body 30 is driven to move inward and forward as the first central axis P moves relative to the guide trajectory line S and the second central axis Q moves relative to the direction-guiding trajectory line K, thereby reducing the restriction by the housing cabinet 100 on the maximum opening angle of the door body 30, and enabling the door body 30 placed within the housing cabinet 100 to be opened to 115° or more.

[0445] In some embodiments, referring to FIG. 50, the straight line where the starting guide point P 0 and the eighth guide point P 8 are located is denoted as P 0 P 8 . On the guide trajectory line S, the point having the maximum distance from the straight line P 0 P 8 is denoted as a first turning point P n . γ 2 = ∠P 0 P n P 8 is an obtuse angle.

[0446] In some embodiments, γ 2 = ∠P 0 P n P 8 belongs to any value of 100° to 115°. For example, γ 2 may be 100°, 105°, 110°, or 115°, etc.

[0447] In some embodiments, γ 2 = ∠P 0 P n P 8 belongs to any value of 105° to 109°. For example, γ 2 may be 105°, 106°, 107°, 108°, or 109°, etc.

[0448] The above limitations on γ 2 further limit the extension tendency of the guide trajectory line S, so that the guide trajectory line S cooperates with the direction-guiding trajectory line such that the door body 30 is driven to move inward and forward as the first central axis P moves relative to the guide trajectory line S and the second central axis Q moves relative to the direction-guiding trajectory line K, thereby reducing the restriction by the housing cabinet 100 on the maximum opening angle of the door body 30, and enabling the door body 30 placed within the housing cabinet 100 to be opened to 115° or more.

[0449] In some embodiments, when the door body 30 is opened to G n , the first shaft 41 moves to the first turning point P n , and at this time, the first side edge W is located at the outer side of the plane where the door side wall 32 is located when the door body 30 is in the closed state. That is, the distance between the first side edge W and the first reference plane M 1 when the door body 30 is opened to G n is smaller than the distance between the first side edge W and the first reference plane M 1 when the door body 30 is in the closed state.

[0450] In some embodiments, during the opening of the door body 30, before the first shaft 41 moves to the first turning point P n , that is, when the opening angle of the door body 30 is less than G n , the first side edge W of the door body 30 is located at the outer side (the side away from the second body side wall) of the plane where the door side wall 32 is located when the door body 30 is in the closed state. The reason for the above design is that, if the first side edge W is not located at the outer side of the plane where the door side wall 32 is located when the door body 30 is in the closed state, then it is needed to increase the inward displacement of the door body 30. As such, it will cause the included angle between the two grooves to be so small that they are prone to self-lock and get stuck. Therefore, it is configured that, when the door body 30 is opened, the first side edge W is located at the outer side of the plane where the door side wall 32 is located when the door body 30 is in the closed state, and the exceeding distance will not affect the gap requirement for the built-in installation. In this way, the door body 30 can be avoided from getting stuck within the hinge assembly.

[0451] In some embodiments, the distance between the first side edge W when the door body 30 is opened and the outer side of the plane where the door side wall 32 is located when the door body 30 is in the closed state is controlled to be between 1 mm to 2 mm. When the refrigerator 10 is built in the housing cabinet 100, it is necessary to reserve a space of at least 2 mm or more for the distance between the housing cabinet 100 and the door body of the refrigerator to prevent a situation of insufficient space due to uneven floor or deformation of the housing cabinet 100. If there is no gap left, the refrigerator cannot be pushed into the space of the housing cabinet.

[0452] In some embodiments, when the door body 30 is opened to G n , the first central axis P moves to the first turning point P n of the guide trajectory line S. At this time, the distance between the first side edge W and the reference plane M 0 is maximum. That is, at this time, the distance between the first side edge W and the first reference plane M 1 is minimal.

[0453] In some embodiments, when the door body 30 is in the closed state, the minimum distance between the position in the guide portion 50 where the first shaft 41 is located and the direction-guiding portion 60 is denoted as a first distance A 1 .

[0454] When the door body 30 is opened, and the first shaft 41 moves to the first turning point P n of the guide trajectory line S, the minimum distance between the position in the guide portion 50 where the first shaft 41 is located and the direction-guiding portion 60 is denoted as a second distance A 2 .

[0455] A 1 , A 2 each belongs to any value of 0 mm to 5 mm. For example, A 1 , A 2 may each be 0 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, or the like.

[0456] In this way, the structures of the guide portion 50 and the direction-guiding portion 60 can be made more compact, and the thickness of the door body can be reduced, so that when the opening angle of the door body 30 is 90°, the door body 30 is positioned at the inner side of the first body side wall, and the distance between the door body 30 and the first body side wall is increased.

[0457] In some embodiments, A 1 , A 2 each belongs to any value of 1.5 mm to 3 mm. In this way, on the one hand, the structures of the guide portion 50 and the direction-guiding portion 60 are made more compact, and on the other hand, the strengths of the guide portion 50 and the direction-guiding portion 60 can also be secured.

[0458] As one measurement method, the guide portion 50 is provided as a guide groove, and the direction-guiding portion 60 is provided as a direction-guiding groove. The guide trajectory line is the center trajectory line of the guide groove, and the direction-guiding trajectory line is the center trajectory line of the direction-guiding groove.

[0459] A groove wall of the guide groove close to the direction-guiding groove is denoted as a first guide wall, and a groove wall of the direction-guiding groove close to the guide groove is denoted as a first direction-guiding wall. That is, the groove wall of the guide groove close to the door rear wall 33 is the first guide wall, and the groove wall of the direction-guiding groove close to the door front wall is the first direction-guiding wall.

[0460] In the plane where the top wall of the refrigerator body is located, a straight line passing through the first central axis P and intersecting the direction-guiding trajectory line K is denoted as a measurement line, and the measurement line intersects the first guide wall at the first test point U 1 , and the measurement line intersects the first direction-guiding wall at the second test point U 2 . The distance between the position in the guide portion 50 where the first shaft 41 is located and the direction-guiding portion 60 is the distance |U 1 U 2 | between the first test point U 1 and the second test point U 2 . The minimum distance |U 1 U 2 | min between the position in the guide portion 50 where the first shaft 41 is located and the direction-guiding portion 60 is determined by changing the angle of the test line passing through the first central axis P and the direction-guiding trajectory line K with respect to the door front wall 31, and by using this method, the magnitudes of A 1 and A 2 can be obtained. In the above, the first distance A 1 < the second distance A 2 .

[0461] In some embodiments, referring to FIG. 50, in a case that the guide trajectory line S includes a first guide line in a straight line shape and a second guide line connected to the first guide line, the straight line where the second guide point P 2 and the eighth guide point P 8 are located is denoted as P 2 P 8 . On the second guide line, the point having the maximum distance from the straight line P 2 P 8 is denoted as a second turning point P m . Where γ 3 = ∠P 2 P m P 8 is an obtuse angle.

[0462] In some embodiments, γ 3 = ∠P 2 P m P 8 belongs to any value of 100° to 120°. For example, γ 3 may be 100°, 105°, 110°, 115°, or 120°, etc.

[0463] In some embodiments, γ 3 = ∠P 2 P m P 8 belongs to any value of 110° to 113°. For example, γ 3 may be 110°, 111°, 112°, or 113°, etc.

[0464] In some embodiments, the above starting angle G 0 is not equal to 0°. 0 ° < G 0 , that is, it is satisfied that, 0° < G 0 < G 1 < G 2 < G 3 < G4< G 5 < G 6 < G 7 = 90° < G 8 = G max , or, 0° < G 0 < G 1 < G 2 < G 3 < G 4 < G 5 < 90° ≤ G 6 < G 7 < G max = G 8 .

[0465] Referring to FIGS. 51-52, in some embodiments, the second trajectory line K includes a direction-changing direction-guiding point Qz. The direction-changing direction-guiding point Qz is located at the side of the starting direction-guiding point Q 0 close to the door side wall 32.

[0466] In some embodiments, the direction-changing direction-guiding point Qz is located at the side of the starting direction-guiding point Q 0 close to the door front wall 31.

[0467] In some embodiments, the direction-changing direction-guiding point Q Z is located at the side of the starting direction-guiding point Q 0 close to the door side wall 32 and the door front wall 31.

[0468] In some embodiments, the second trajectory line K further includes a tenth direction-guiding point Q 10 . The tenth direction-guiding point Q 10 is located at the side of the direction-changing direction-guiding point Q Z close to the door side wall 32.

[0469] In some embodiments, the tenth direction-guiding point Q 10 is located at the side of the direction-changing direction-guiding point Qz close to the door front wall 31.

[0470] In some embodiments, the tenth direction-guiding point Q 10 is located at the side of the direction-changing direction-guiding point Qz close to the door side wall 32 and the door front wall 31.

[0471] In some embodiments, the second trajectory line K further includes a ninth direction-guiding point Q 9 . The ninth direction-guiding point Q 9 is located at the side of the tenth direction-guiding point Q 10 close to the door side wall 32.

[0472] In some embodiments, the ninth direction-guiding point Q 9 is located at the side of the tenth direction-guiding point Q 10 close to the door front wall 31.

[0473] In some embodiments, the ninth direction-guiding point Q 9 is located at the side of the tenth direction-guiding point Q 10 close to the door side wall 32 and the door front wall 31.

[0474] The respective distances from the starting direction-guiding point Q 0 , the direction-changing direction-guiding point Qz, the tenth direction-guiding point Q 10 , and the ninth direction-guiding point Q 9 to the door side wall 32 decrease sequentially. That is, the starting direction-guiding point Q 0 , the direction-changing direction-guiding point Q Z , the tenth direction-guiding point Q 10 , and the ninth direction-guiding point Q 9 are sequentially closer to the door side wall 32.

[0475] In some embodiments, the starting direction-guiding point Q 0 is a location on the second trajectory line K having the largest distance from the door side wall 32.

[0476] The respective distances from the starting direction-guiding point Q 0 , the direction-changing direction-guiding point Qz, the tenth direction-guiding point Q 10 , and the ninth direction-guiding point Q 9 to the door front wall 31 decrease sequentially. That is, the starting direction-guiding point Q 0 , the direction-changing direction-guiding point Q Z , the tenth direction-guiding point Q 10 , and the ninth direction-guiding point Q 9 are sequentially closer to the door front wall 31.

[0477] In some embodiments, the second trajectory line K starts from the ninth direction-guiding point Q 9 , first extends in a direction getting away from the door side wall 32 and the door front wall 31, and sequentially passes through the tenth direction-guiding point Q 10 and the direction-changing direction-guiding point Qz, and extends to the starting direction-guiding point Qo; and then it extends from the starting direction-guiding point Q 0 in a direction getting closer to the door side wall 32 and getting away from the door front wall 31, and sequentially passes through the first direction-guiding point Q 1 , the second direction-guiding point Q 2 , the third direction-guiding point Q 3 , the fourth direction-guiding point Q 4 , and the fifth direction-guiding point Q 5 , and extends to the sixth direction-guiding point Q 6 . Then, it extends from the sixth direction-guiding point Q 6 in a direction getting closer to the door side wall 32 and the door front wall 31, and sequentially passes through the seventh direction-guiding point Q 7 and extends to the eighth direction-guiding point Q 8 .

[0478] In some embodiments, the guide trajectory line S includes a direction-changing guide point Pz.

[0479] When the door body 30 is opened to the direction-changing angle Gz, the first central axis P is located at the direction-changing guide point Pz, the second central axis Q is located at the direction-changing direction-guiding point Q Z , and the axial midpoint I is located at the direction-changing midpoint Iz with respect to the door body 30.

[0480] In some embodiments, the guide trajectory line S includes a tenth guide point P 10 .

[0481] When the door body 30 is opened to the tenth angle G 10 , the first central axis P is located at the tenth guide point P 10 , the second central axis Q is located at the tenth direction-guiding point Q 10 , and the axial midpoint I is located at the tenth midpoint I 10 with respect to the door body 30.

[0482] In some embodiments, the guide trajectory line S includes a ninth guide point P 9 .

[0483] When the door body 30 is opened to the ninth angle G 9 , the first central axis P is located at the ninth guide point P 9 , the second central axis Q is located at the ninth direction-guiding point Q 9 , and the axial midpoint I is located at the ninth midpoint I 9 with respect to the door body 30.

[0484] In some embodiments, G 9 < G 10 < Gz < G 0 .

[0485] In some embodiments, the direction-changing guide point Pz is located at the side of the tenth guide point P 10 close to the door side wall 32 and away from the door front wall 31.

[0486] In some embodiments, the ninth guide point P 9 is located at the side of the direction-changing guide point Pz close to the door side wall 32 and away from the door front wall 31.

[0487] In some embodiments, the respective distances from the tenth guide point P 10 , the direction-changing guide point Pz, and the ninth guide point P 9 to the door side wall 32 decrease sequentially. That is, the tenth guide point P 10 , the direction-changing guide point Pz, and the ninth guide point P 9 are sequentially closer to the door side wall 32.

[0488] In some embodiments, the tenth guide point P 10 is a position on the guide trajectory line S having the largest distance from the door side wall 32.

[0489] In some embodiments, the respective distances from the tenth guide point P 10 , the direction-changing guide point P Z , and the ninth guide point P 9 to the door front wall 31 increase sequentially. That is, the tenth guide point P 10 , the direction-changing guide point P Z , and the ninth guide point P 9 are sequentially further away from the door front wall 31.

[0490] It should be noted that the ninth guide point P 9 is located on the guide trajectory line S, and the relative positions of the ninth guide point P 9 with respect to the direction-changing guide point Pz, the starting guide point P 0 , the first guide point P 1 , etc., may be set according to different conditions.

[0491] Combined with the limitation that G 0 < G 1 < G 2 < G 3 < G 4 < G 5 < G 6 < G 7 = 90° < G 8 = G max , or G 0 < G 1 < G 2 < G 3 < G 4 < G 5 < 90° ≤ G 6 < G 7 < G max = G 8 , the door body 30 starts to open from the ninth angle G 9 , and the door body 30 opens from the ninth angle G 9 sequentially through the tenth angle G 10 , the direction-changing angle Gz, the starting angle G 0 , the first angle G 1 , the second angle G 2 , the third angle G 3 , the fourth angle G 4 , the fifth angle G 5 , the sixth angle G 6 , and the seventh angle G 7 to the eighth angle G 8 .

[0492] The door body 30 starts to open from the ninth angle G 9 , and the first central axis P starts from the ninth guide point P 9 , sequentially passes through the tenth guide point P 10 , the direction-changing guide point Pz, the starting guide point P 0 , the first guide point P 1 , the second guide point P 2 , the third guide point P 3 , the fourth guide point P 4 , the fifth guide point P 5 , the sixth guide point P 6 , and the seventh guide point P 7 , and is opened to the eighth guide point P 8 .

[0493] During the process of opening the door body 30 from the ninth angle G 9 to the tenth angle G 10 , the first central axis P moves in a direction getting away from the door side wall 32 and getting closer to the door front wall 31.

[0494] During the process of opening the door body 30 from the tenth angle G 10 to the eighth angle G 8 , the first central axis P moves in a direction getting closer to the door side wall 32.

[0495] During the process of opening the door body 30 from the tenth angle G 10 to the fourth angle G 4 , the first central axis P moves in a direction getting closer to the door side wall 32 and getting away from the door front wall 31.

[0496] During the process of opening the door body 30 from the fourth angle G 4 to the eighth angle G 8 , the first central axis P moves in a direction getting closer to the door side wall 32 and the door front wall 31.

[0497] It should be noted that during the process of opening the door body 30 from the ninth angle G 9 , the first central axis P first moves in a direction getting away from the door side wall 32 and getting closer to the door front wall 31, and then it retracts, that is, moves in the reverse direction getting closer to the door side wall 32 and getting away from the door front wall 31, and then it moves in a direction getting closer to the door side wall 32 and the door front wall 31.

[0498] In some embodiments, the closed angle G G = G 10 . Then, during the process of opening the door body 30 from the closed angle G G to the eighth angle G 8 , the first central axis P moves in a direction getting closer to the door side wall 32 and getting away from the door front wall 31.

[0499] In some embodiments, the closed angle G G = G 10 < G 0 . Then, during the process of opening the door body 30 from the closed angle G G to the eighth angle G 8 , the second central axis Q first moves in a direction getting away from the door side wall 32 and the door front wall 31, then moves in a direction getting closer to the door side wall 32 and getting away from the door front wall 31, and then moves in a direction getting closer to the door side wall 32 and the door front wall 31.

[0500] In some embodiments, the closed angle G G = G 0 . Then, during the process of opening the door body 30 from the closed angle GG to the eighth angle G 8 , the second central axis Q first moves in a direction getting closer to the door side wall 32 and getting away from the door front wall 31, and then moves in a direction getting closer to the door side wall 32 and the door front wall 31.

[0501] In some embodiments, the ninth guide point P 9 is located at the side of the starting guide point P 0 close to the door side wall 32 and away from the door front wall 31.

[0502] In some embodiments, the ninth guide point P 9 is located at the side of the starting guide point P 0 away from the door side wall 32 and close to the door front wall 31.

[0503] In some embodiments, the ninth guide point P 9 coincides with the starting guide point P 0 .

[0504] In some embodiments, the distance between the ninth guide point P 9 and the starting guide point P 0 is denoted as |P 9 P 0 |.

[0505] |P 9 P 0 | is greater than or equal to a first distance reference value, and the first distance reference value is 0 mm.

[0506] |P 9 P 0 | is less than or equal to a second distance reference value, and the second distance reference value is 0.5 mm or 1 mm.

[0507] The above limitations enable that, during the process of opening the door body 30 from the ninth angle G 9 to the starting angle G 0 , the first central axis P can complete the direction-changing and retracting movement from moving in the direction getting away from the door side wall 32 to moving in the direction getting close to the door side wall 32, and return to a position close to the starting guide point P 0 .

[0508] The door body 30 starts to open from the ninth angle G 9 , and the second central axis Q starts from the ninth direction-guiding point Q 9 , sequentially passes through the tenth direction-guiding point Q 10 , the direction-changing direction-guiding point Q Z , the starting direction-guiding point Q 0 , the first direction-guiding point Q 1 , the second direction-guiding point Q 2 , the third direction-guiding point Q 3 , the fourth direction-guiding point Q 4 , the fifth direction-guiding point Q 5 , the sixth direction-guiding point Q 6 , and the seventh direction-guiding point Q 7 , and is opened to the eighth direction-guiding point Q 8 .

[0509] During the process of opening the door body 30 from the ninth angle G 9 to the starting angle G 0 , the second central axis Q moves in a direction getting away from the door side wall 32 and the door front wall 31.

[0510] During the process of opening the door body 30 from the starting angle G 0 to the sixth angle G 6 , the second central axis Q moves in a direction getting closer to the door side wall 32 and getting away from the door front wall 31.

[0511] During the process of opening the door body 30 from the sixth angle G 6 to the eighth angle G 8 , the second central axis Q moves in a direction getting closer to the door side wall 32 and the door front wall 31.

[0512] Based on the above descriptions, according to the movement direction of the first shaft 41 relative to the door body 30 and the movement direction of the second shaft 42 relative to the door body 30 during the opening process of the door body 30, the process of opening the door body 30 from the ninth angle G 9 to the eighth angle G 8 is divided into five stages, namely, a first sub-stage, a second sub-stage, a third sub-stage, a fourth sub-stage, and a fifth sub-stage.

[0513] In the first sub-stage, during the process of opening the door body 30 from the ninth angle G 9 to the tenth angle G 10 , the first central axis P moves from the ninth guide point P 9 along the guide trajectory line S in a direction getting away from the door side wall 32 and getting closer to the door front wall 31. The second central axis Q moves from the ninth direction-guiding point Q 9 along the direction-guiding trajectory line K in a direction getting away from the door side wall 32 and the door front wall 31.

[0514] For example, the first central axis P moves from the ninth guide point P 9 along the guide trajectory line S to the tenth guide point P 10 . The second central axis Q moves from the ninth direction-guiding point Q 9 along the direction-guiding trajectory line K to the tenth direction-guiding point Q 10 .

[0515] In the opening process of the first sub-stage described above, descriptions will be made by using the second hinge member (the guide portion 50 or the direction-guiding portion 60 or the door body 30) as a reference object.

[0516] During the process of opening the door body 30 from the ninth angle G 9 to the tenth angle G 10 , the axial line segment PQ rotates clockwise from P 9 Q 9 and moves to P 10 Q 10 . That is, the movement tendency of the axial line segment PQ is P 9 Q 9 → P 10 Q 10 . At the same time, the movement tendency of the axial midpoint I as the axial line segment PQ moves is I 9 → I 10 . That is, during the process of opening the door body 30, relative to the door body 30, the axial midpoint I moves in a direction getting away from the door side wall 32 and the door front wall 31.

[0517] Since the guide portion 50 and the direction-guiding portion 60 are provided on the door body 30, when the axial line segment PQ represents the movement of the hinge plate 40 provided on the refrigerator body 10, it can be concluded that: taking the door body 30 as a reference object, during the entire process of opening the door body 30 from the ninth angle G 9 to the tenth angle G 10 , the refrigerator body 10 (i.e. the hinge plate 40) keeps rotating clockwise to open relative to the door body 30, and moves a predetermined distance in a direction getting away from the door side wall 32 and the door front wall 31.

[0518] In summary, during the process of opening the door body 30 from the ninth angle G 9 to the tenth angle G 10 , taking the door body 30 (the guide groove or the direction-guiding groove) as a reference object, the refrigerator body 10 also has a translational movement while performing a rotational movement relative to the door body 30. This translational movement is, for example, a displacement parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a displacement parallel to the door side wall 33 and pointing towards the side away from the door front wall 31, of the refrigerator body 10 relative to the door body 30.

[0519] According to the relativity of movement, taking the refrigerator body 10 as a reference, during the process of opening the door body 30 from the ninth angle G 9 to the tenth angle G 10 , the door body 30 also has a translational movement while performing a rotational movement. This translational movement is, for example, a displacement parallel to the door rear wall 33 and pointing towards the side of the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side of the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0520] In some embodiments, during the process of opening the door body 30 from the ninth angle G 9 to the tenth angle G 10 , the first central axis P performs a curvilinear movement along the guide trajectory line S.

[0521] In the second sub-stage, the door body 30 is opened from the tenth angle G 10 to the starting angle G 0 , the first central axis P moves from the tenth guide point P 10 along the guide trajectory line S in a direction getting away from the door side wall 32 and getting closer to the door front wall 31 to the starting guide point P 0 .

[0522] For example, the door body 30 is opened from the tenth angle G 10 through the direction-changing angle Gz to the starting angle G 0 . During this process, the first central axis P moves from the tenth guide point P 10 in a direction getting away from the door side wall 32 and getting closer to the door front wall 31. The second central axis Q moves from the tenth direction-guiding point Q 10 in a direction getting away from the door side wall 32 and the door front wall 31.

[0523] The first central axis P moves from the tenth guide point P 10 along the guide trajectory line S through the direction-changing guide point Pz to the starting guide point P 0 . The second central axis Q moves from the tenth direction-guiding point Q 10 along the direction-guiding trajectory line K through the direction-changing direction-guiding point Qz to the starting direction-guiding point Q 0 .

[0524] In the opening process of the second sub-stage described above, descriptions will be made by using the second hinge member (the guide portion 50 or the direction-guiding portion 60 or the door body 30) as a reference object.

[0525] During the process of opening the door body 30 from the ninth angle G 9 to the tenth angle G 10 , the axial line segment PQ rotates clockwise from P 10 Q 10 and sequentially moves to PzQz and P 0 Q 0 . That is, the movement tendency of the axial line segment PQ is P 10 Q 10 → P Z Q Z → P 0 Q 0 . At the same time, the movement tendency of the axial midpoint I as the axial line segment PQ moves is I 10 → I Z → I 0 .

[0526] In some embodiments, when the door body 30 is opened to the direction-changing angle Gz, the axial midpoint I moves to the direction-changing midpoint Iz. At this time, the distance between the axial midpoint I and the door side wall 32 is the largest.

[0527] During the process of opening the door body 30 from the tenth angle G 10 to the starting angle G 0 , the axial midpoint I first moves in a direction getting away from the door side wall 32 and the door front wall 31, and then moves in a direction getting closer to the door side wall 32 and getting away from the door front wall 31.

[0528] For example, during the process of opening the door body 30 from the tenth angle G 10 to the starting angle G 0 , the axial midpoint I first moves from the tenth midpoint I 10 in a direction getting away from the door side wall 32 and the door front wall 31 to the direction-changing midpoint Iz, and then moves from the direction-changing midpoint Iz along a curved line in a direction getting closer to the door side wall 32 and getting away from the door front wall 31 to the starting midpoint I 0 .

[0529] In some embodiments, the axial midpoint I moves along a curved line.

[0530] Since the guide portion 50 and the direction-guiding portion 60 are provided on the door body 30, when the axial line segment PQ represents the movement of the hinge plate 40 provided on the refrigerator body 10, it can be concluded that: taking the door body 30 as a reference object, during the process of opening the door body 30 from the tenth angle G 10 to the direction-changing angle G Z , the refrigerator body 10 (i.e. the hinge plate 40) keeps rotating clockwise to open relative to the door body 30, and moves a predetermined distance in a direction getting away from the door side wall 32 and the door front wall 31. During the process of opening the door body 30 from the direction-changing angle Gz to the starting angle G 0 , the refrigerator body 10 (i.e. the hinge plate 40) keeps rotating clockwise to open relative to the door body 30, and moves a predetermined distance in a direction getting closer to the door side wall 32 and getting away from the door front wall 31.

[0531] In summary, during the process of opening the door body 30 from the tenth angle G 10 to the direction-changing angle Gz, taking the door body 30 (the guide groove or the direction-guiding groove) as a reference object, the refrigerator body 10 also has a translational movement while performing a rotational movement relative to the door body 30. This translational movement is, for example, a displacement parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a displacement parallel to the door side wall 33 and pointing towards the side away from the door front wall 31, of the refrigerator body 10 relative to the door body 30.

[0532] During the process of opening the door body 30 from the direction-changing angle Gz to the starting angle G 0 , taking the door body 30 (the guide groove or the direction-guiding groove) as a reference object, the refrigerator body 10 has also a translational movement while performing a rotational movement relative to the door body 30. This translational movement is, for example, a displacement parallel to the door rear wall 33 and pointing towards the side of the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side away from the door front wall 31, of the refrigerator body 10 relative to the door body 30.

[0533] According to the relativity of movement, taking the refrigerator body 10 as a reference, during the process of opening the door body 30 from the tenth angle G 10 to the direction-changing angle Gz, the door body 30 also has a translational movement while performing a rotational movement. This translational movement is, for example, a displacement parallel to the door rear wall 33 and pointing towards the side of the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side of the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0534] During the process of opening the door body 30 from the direction-changing angle Gz to the starting angle G 0 , there are a displacement parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side of the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0535] In some embodiments, Gz = G 0 . That is, when the door body 30 is opened to the direction-changing angle Gz, the second central axis Q moves to the starting direction-guiding point Q 0 on the direction-guiding trajectory line K having the largest distance from the door side wall 32. During the process of opening the door body 30 from the tenth angle G 10 to the starting angle G 0 , relative to the door body 30, the axial midpoint I keeps moving in a direction getting away from the door side wall 32 and the door front wall 31. For the movement process of the door body 30, reference may be made to the above descriptions regarding situations where the axial midpoint I moves relative to the door body 30 in a direction getting away from the door side wall 32 and the door front wall 31 (corresponding to the process of opening the door body 30 from the tenth angle G 10 to the direction-changing angle Gz), and details will not be repeated here.

[0536] In the third sub-stage, during the process of opening the door body 30 from the starting angle G 0 to the fourth angle G 4 , this process is the same as the situation in the first stage during the aforementioned process of opening the door body 30 from the starting angle G 0 to the fourth angle G 4 (corresponding to the situation where the starting angle G 0 is not equal to 0°), and details will not be repeated here.

[0537] Based on the situation in the first stage, it can be seen that, in the third sub-stage, with the refrigerator body 10 as a reference object, during the process of opening the door body 30 from the starting angle G 0 (for example, G 0 = 0°) to the fourth angle G 4 , the door body 30 also has a translational movement while performing a rotational movement. This translational movement is, for example, a displacement parallel to the door rear wall 33 and directed towards the side away from the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side of the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0538] In the fourth sub-stage, the door body 30 is opened from the fourth angle G 4 to the sixth angle G 6 . This process is the same as the situation in the second stage during which the door body 30 is opened from the fourth angle G 4 to the sixth angle G 6 , and details will not be repeated here.

[0539] Based on the situation in the second stage, it can be seen that, in the fourth sub-stage, with the refrigerator body 10 as a reference object, during the process of opening the door body 30 from the fourth angle G 4 to the direction-altering angle G', the door body 30 also has a translational movement while performing a rotational movement. This translational movement is, for example, a displacement parallel to the door rear wall 33 and directed towards the side away from the door side wall 32, and a displacement parallel to the door side wall 32 and directed towards the side of the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0540] During the process of opening the door body 30 from the direction-altering angle G' to the sixth angle G6, there are a displacement parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side away from the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0541] In some embodiments, G' = G 6 . That is, when the door body 30 is opened to the direction-altering angle G', the second central axis Q moves to the sixth direction-guiding point Q 6 on the direction-guiding trajectory line K having the largest distance from the door front wall 31. During the process of opening the door body 30 from G 4 to G 6 , relative to the door body 30, the axial midpoint I moves in a direction getting closer to the door side wall 32 and the door rear wall 33. For the movement process of the door body 30, reference may be made to the above descriptions regarding situations where the axial midpoint I moves relative to the door body 30 in a direction getting closer to the door side wall 32 and the door rear wall 33, and details will not be repeated here.

[0542] In the fifth sub-stage, the door body 30 is opened from the sixth angle G 6 to the eighth angle G 8 . This process is the same as the situation in the third stage during which the door body 30 is opened from the sixth angle G 6 to the eighth angle G 8 , and details will not be repeated here.

[0543] Based on the situation in the third stage, it can be seen that, in the fifth sub-stage, taking the refrigerator body 10 as a reference object, during the process of opening the door body 30 from the sixth angle G 6 to the maximum angle G max (the eighth angle G 8 ), the door body 30 also has a translational movement while performing a rotational movement. This translational movement is, for example, a displacement parallel to the door rear wall 33 and pointing towards the side away from the door side wall 32, and a displacement parallel to the door side wall 32 and pointing towards the side away from the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0544] In summary, compared with the aforementioned configuration where the door body 30 opens from the starting angle G 0 to the eighth angle G 8 , which includes the first stage, the second stage, and the third stage, the process of the door body 30 opening from the ninth angle G 9 to the eighth angle G 8 not only includes the first stage (the third sub-stage), the second stage (the fourth sub-stage), and the third stage (the fifth sub-stage), but also includes the first sub-stage and the second sub-stage preceding the first stage.

[0545] During the process of opening the door body 30 from the ninth angle G 9 to the eighth angle G 8 , the axial midpoint I moves from the ninth midpoint I 9 , sequentially passing through the tenth midpoint I 10 , the direction-changing midpoint Iz, the starting midpoint I 0 , the first midpoint I 1 , the second midpoint I 2 , the third midpoint I 3 , the fourth midpoint I 4 , the fifth midpoint I 5 , the sixth midpoint I 6 , and the seventh midpoint I 7 , to the eighth midpoint I 8 . In the above opening process, the first central axis P moves relative to the guide trajectory line S, the second central axis moves relative to the direction-guiding trajectory line K, and the first central axis P rotates with the axial midpoint I as the instantaneous rotation center. The position of the axial midpoint I relative to the door body 30 is constantly changing, and the position of the instantaneous rotation center of the door body 30 is constantly changing.

[0546] During the process of opening the door body 30 from the ninth angle G 9 to the direction-changing angle Gz, the axial midpoint I moves in a direction getting away from the door side wall 32 and the door front wall 31.

[0547] During the process of opening the door body 30 from the direction-changing angle Gz to the direction-altering angle G', the axial midpoint I moves in a direction getting closer to the door side wall 32 and getting away from the door front wall 31.

[0548] During the process of opening the door body 30 from the direction-altering angle G' to the eighth angle G 8 , the axial midpoint I moves in a direction getting closer to the door side wall 32 and the door front wall 31.

[0549] In some embodiments, the direction-altering angle G' is an acute angle or a right angle.

[0550] In some embodiments, G 9 > 0°. The respective opening angles of the door body 30 satisfy 0° < G 9 < G 10 < Gz < G 0 < G 1 < G 2 < G 3 < G 4 < G 5 < G 6 < G 7 < G 8 .

[0551] In some embodiments, G G = G 9 = 0°. That is, when the door body 30 is at the ninth angle G 9 , the door body 30 is in the closed state. The process of opening the door body 30 from the ninth angle G 9 to the eighth angle G 8 is essentially the process of opening the door body 30 from the closed state to the eighth angle G 8 .

[0552] In some embodiments, the respective opening angles of the door body 30 satisfy 0° = G 9 < G 10 < Gz < G 0 < G 1 < G 2 < G 3 < G 4 < G 5 < G 6 < G 7 < G 8 .

[0553] Referring to the movement situation of the door body 30 in the displacement coordinate system AOB during the aforementioned process of opening the door body 30 from the starting angle G 0 to the eighth angle G 8 , the movement process of opening the door body 30 from the ninth angle G 9 to the eighth angle G 8 will be analyzed below.

[0554] When the direction-altering angle G' is an acute angle, based on the situations of the first sub-stage, the second sub-stage, the third sub-stage, the fourth sub-stage, and the fifth sub-stage, it can be known that:

[0555] In the above first sub-stage (during the process of opening the door body 30 from the ninth angle G 9 (for example, G 9 = 0°) to the tenth angle G 10 ) and in the second sub-stage during the process of opening the door body 30 from the tenth angle G 10 to the direction-changing angle G Z , the first direction displacement S 1 points towards the side of the door side wall 32, and the second direction displacement S 2 points towards the side of the door front wall 31.

[0556] In the above second sub-stage during the process of opening the door body 30 from the direction-changing angle Gz to the starting angle G 0 , and in the third sub-stage (during the process of opening the door body 30 from the starting angle G 0 to the fourth angle G 4 ) and the fourth sub-stage during the process of opening the door body 30 from the starting angle G 0 to the direction-altering angle G', the first direction displacement S 1 points towards the side away from the door side wall 32, and the second direction displacement S 2 points toward the side of the door front wall 31.

[0557] In the above fourth sub-stage during the process of opening the door body 30 from the direction-altering angle G' to the sixth angle G 6 , and in the fifth sub-stage (during the process of opening the door body 30 from the sixth angle G 6 to the eighth angle G 8 (the maximum angle G max = Gs)), the first direction displacement S 1 points towards the side away from the door side wall 32, and the second direction displacement S 2 points towards the side away from the door front wall 31.

[0558] In summary, during the process of opening the door body 30 from the ninth angle G 9 (for example, G9 = 0°) to the direction-changing angle Gz, the first direction displacement S 1 points towards the side of the door side wall 32, and the second direction displacement S 2 points towards the side of the door front wall 31.

[0559] During the process of opening the door body 30 from the direction-changing angle Gz to the direction-altering angle G', the first direction displacement S 1 points towards the side away from the door side wall 32, and the second direction displacement S 2 points towards the side of the door front wall 31.

[0560] During the process of opening the door body 30 from the direction-altering angle G' to the maximum angle G max (the eighth angle G 8 ), the first direction displacement S 1 points towards the side away from the door side wall 32, and the second direction displacement S 2 points towards the side away from the door front wall 31.

[0561] In the displacement coordinate system AOB, the door body has a first direction displacement S 1 parallel to the door rear wall 33, and a second direction displacement S 2 parallel to the door side wall 32. The component displacement of the first direction displacement S 1 along the A axis is A 1 , and the component displacement of the first direction displacement S 1 along the B axis is B 1 . The component displacement of the second direction displacement S 2 along the A axis is A 2 , and the component displacement of the second direction displacement S 2 along the B axis is B 2 .

[0562] In some embodiments, the direction-altering angle G' < 90°.

[0563] Referring to FIG. 54, during the process of opening the door body 30 from the ninth angle G 9 (for example, G 9 = 0°) to the direction-changing angle Gz, the first direction displacement S 1 of the door body 30 is located in the fourth quadrant (A > 0, B < 0), and the second direction displacement S 2 is located in the first quadrant (A > 0, B > 0). A displacement decomposition is performed on the first direction displacement S 1 and the second direction displacement S 2 along the A-axis and along the B-axis respectively. The component displacement of the first direction displacement S 1 along the A axis is A 1 > 0, and the component displacement of the first direction displacement S 1 along the B axis is B 1 < 0. The component displacement of the second direction displacement S 2 along the A axis is A 2 > 0, and the component displacement of the second direction displacement S 2 along the B axis is B 2 > 0. Under the trajectory characteristic configurations in some embodiments of the present disclosure, there is |B 1 |<|B 2 |; then there is, A 0 = A 1 + A 2 > 0, B 0 = B 1 + B 2 > 0. That is, during the process of opening the door body 30 from the ninth angle G 9 to the direction-changing angle Gz, in the displacement coordinate system AOB, the door body 30 has a first translational displacement A 0 > 0 and a second translational displacement B 0 > 0. Therefore, it can be concluded that, relative to the refrigerator body 10, the door body 30 also has a translational movement tendency of moving in a positive direction along the A axis and moving in a positive direction along the B axis while performing the rotational movement. That is, during the process of opening the door body 30 from the ninth angle G 9 to the direction-changing angle Gz, the door body 30 also has a movement tendency to translate outward and forward while rotating and opening relative to the refrigerator body 10.

[0564] During the process of opening the door body 30 from the direction-changing angle Gz to a direction-altering angle G', A 1 < 0, B 1 > 0; A 2 > 0, B 2 > 0. Under the trajectory characteristic configurations of the present disclosure, there is |A 1 | > |A 2 |, then there is, A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0.

[0565] That is, during the process of opening the door body 30 from the direction-altering angle G' to 90° (for example, G 7 = 90°), A 1 < 0, B 1 > 0; and A 2 < 0, B 2 < 0. Under the trajectory characteristic configurations in some embodiments of the present disclosure, there is |B 1 |>|B 2 |; then there is, A 0 = A 1 + A 2 < 0, B 0 = B 1 + B 2 > 0.

[0566] When the door body 30 is opened to 90°, A 1 = 0, B 1 = S 1 > 0; A 2 = S 2 < 0, B 2 = 0. A 0 = A 1 + A 2 = S 2 < 0, B 0 = B 1 + B 2 = S 1 > 0.

[0567] During the process of opening the door body 30 from 90° to G 8 (G 8 > 90°), A 1 > 0, B 1 > 0; A 2 < 0, B 2 > 0. Under the trajectory characteristic configurations in some embodiments of the present disclosure, there is |A 2 |>|A 1 |; then there is, A 0 = A 1 + A 2 < 0, B 0 = B 1 , + B 2 > 0.

[0568] In conclusion, during the process of opening the door body 30 from the ninth angle G 9 (for example, G 9 = 0°) to the eighth angle G 8 (G 8 > 90°), relative to the refrigerator body 10, the door body 30 also has a movement tendency to first translate outward and forward and then translate inward and forward while simply rotating throughout the process.

[0569] For example, during the process of opening the door body 30 from the ninth angle G 9 (for example, G 9 = 0°) to the direction-changing angle G Z , relative to the refrigerator body 10, the door body 30 also has a movement tendency to translate outward and forward while simply rotating throughout the process.

[0570] During the process of opening the door body 30 from the direction-changing angle Gz to the eighth angle G 8 (Gs > 90°), relative to the refrigerator body 10, the door body 30 also has a movement tendency to translate inward and forward while simply rotating throughout the process.

[0571] When the direction-altering angle G' is a right angle (G' = 90°), based on the situations of the first sub-stage, the second sub-stage, the third sub-stage, the fourth sub-stage, and the fifth sub-stage, it can be known that: When the door body 30 is opened to 90°, the distance between the axial midpoint I and the door front wall 31 reaches its maximum value. That is, the axial midpoint I moves to the direction-altering midpoint I'.

[0572] During the process of opening the door body 30 from the ninth angle G 9 (for example, G 9 = 0°) to the direction-changing angle GZ, the first direction displacement S 1 of the door body 30 is located in the fourth quadrant (A > 0, B < 0), and the second direction displacement S 2 is located in the first quadrant (A > 0, B > 0). A displacement decomposition is performed on the first direction displacement S 1 and the second direction displacement S 2 along the A-axis and along the B-axis respectively. The component displacement of the first direction displacement S 1 along the A axis is A 1 > 0, and the component displacement of the first direction displacement S 1 along the B axis is B 1 < 0. The component displacement of the second direction displacement S 2 along the A axis is A 2 > 0, and the component displacement of the second direction displacement S 2 along the B axis is B 2 > 0. Under the trajectory characteristic configurations in some embodiments of the present disclosure, there is |B 1 |<|B 2 |; then there is, A 0 = A 1 + A 2 > 0, B 0 = B 1 + B 2 > 0. That is, during the process of opening the door body 30 from the ninth angle G 9 to the direction-changing angle Gz, in the displacement coordinate system AOB, the door body 30 has a first translational displacement A 0 > 0 and a second translational displacement B 0 > 0. Therefore, it can be concluded that, relative to the refrigerator body 10, the door body 30 also has a translational movement tendency of moving in a positive direction along the A axis and moving in a negative direction along the B axis while performing the rotational movement. That is, during the process of opening the door body 30 from the ninth angle G 9 to the direction-changing angle G Z , the door body 30 also has a movement tendency to translate outward and forward while rotating and opening relative to the refrigerator body 10.

[0573] During the process of opening the door body 30 from the direction-changing angle Gz to a direction-altering angle G' = 90°, A 1 < 0, B 1 > 0; A 2 > 0, B 2 > 0. Under the trajectory characteristic configurations of the present...

Claims

1. A refrigerator, comprising: a refrigerator body, comprising: a storage compartment, comprising an access opening; a first body side wall; and a second body side wall, disposed opposite to the first body side wall; a door body, comprising: a door front wall, the door front wall being a side wall away from the refrigerator body when the door body is closed; and a door side wall, close to the first body side wall and connected to the door front wall; a hinge assembly, connecting the refrigerator body and the door body to enable the door body to rotate relative to the refrigerator body to open or close the access opening; the hinge assembly comprises: a hinge plate, comprising: a connection portion, connected to the refrigerator body and close to the first body side wall; and an extension portion, extending from the connection portion toward a side away from the refrigerator body; a first shaft, disposed at the extension portion; a second shaft, disposed at the extension portion; a guide portion, disposed at the door body and close to the door side wall; the first shaft cooperating with the guide portion; and a direction-guiding portion, disposed at the door body and close to the door side wall; the second shaft cooperating with the direction-guiding portion; wherein during a process of opening the door body from a closed state, the first shaft moves relative to the guide portion, and the second shaft moves relative to the direction-guiding portion; wherein, a displacement coordinate system AOB is established in a projection on a plane where a top wall of the refrigerator body is located; wherein, in the displacement coordinate system AOB, OB is perpendicular to a plane where the access opening is located, and takes a direction from the access opening pointing toward the door front wall when the door body is closed as positive; OA is parallel to the plane where the access opening is located, and takes a direction from the second body side wall pointing toward the first body side wall as positive; and the displacement coordinate system AOB is a coordinate system that is stationary relative to the refrigerator body; wherein, during an entire process of opening the door body from a ninth angle G9 to an eighth angle G8, the door body has a first direction displacement S1 parallel to the door front wall and a second direction displacement S2 parallel to the door side wall while rotating; wherein, a component displacement of the first direction displacement S1 along the A axis is A1, and a component displacement of the first direction displacement S1 along the B axis is B1; a component displacement of the second direction displacement S2 along the A axis is A2, and a component displacement of the second direction displacement S2 along the B axis is B2; during a process of opening the door body from the ninth angle G9 to a direction-changing angle Gz, A1 > 0, B1 < 0; A2 > 0, B2 > 0; A0 = A1 + A2 > 0, B0 = B1 + B2 > 0; during a process of opening the door body from the direction-changing angle Gz to a direction-altering angle G', A1 < 0, B1 > 0; A2 > 0, B2 > 0; A0 = A1 + A2 < 0, B0 = B1 + B2 > 0; during a process of opening the door body from the direction-altering angle G' to 90°, A1 < 0, B1 > 0; A2 < 0, B2 < 0; A0 = A1 + A2 < 0, B0 = B1 + B2 > 0; when the door body is opened to 90°, A1 = 0, B1 > 0; A2 < 0, B2 = 0; A0 = A1 + A2 < 0, B0 = B1 + B2 > 0; during a process of opening the door body from 90° to an eighth angle G8, A1 > 0, B1 > 0; A2 < 0, B2 > 0; A0 = A1; + A2 < 0, B0 = B1 + B2 > 0; wherein 0° ≤ G9 < GZ < G' < 90° < G8.

2. The refrigerator according to claim 1, wherein, the guide portion comprises a guide trajectory line; the guide trajectory line starts from its end away from the door side wall, extends firstly in a direction getting away from the door front wall and getting closer to the door side wall, and then extends in a direction getting closer to the door front wall and the door side wall; and the direction-guiding portion comprises a direction-guiding trajectory line; the direction-guiding trajectory line starts from its end away from the door side wall, extends firstly in a direction getting away from the door front wall and the door side wall, and then extends in a direction getting away from the door front wall and getting closer to the door side wall, and then extends in a direction getting closer to the door front wall and the door side wall.

3. The refrigerator according to claim 2, wherein, during a process of opening the door body from a closed angle GG to the direction-changing angle GZ, the first shaft moves relative to the guide portion firstly towards a side away from the door side wall and close to the door front wall, and then towards a side close to the door side wall and away from the door front wall; the second shaft moves relative to the direction-guiding portion towards a side away from the door side wall and the door front wall, and the door body moves towards a side away from the second body side wall and the access opening by a first predetermined distance.

4. The refrigerator according to claim 2, wherein, during a process of opening the door body from a closed angle GG to the direction-changing angle GZ, the first shaft moves relative to the guide portion towards a side close to the door side wall and away from the door front wall; the second shaft moves relative to the direction-guiding portion towards a side away from the door side wall and the door front wall, and the door body moves towards a side away from the second body side wall and the access opening by a second predetermined distance.

5. The refrigerator according to claim 3 or 4, wherein during a process of opening the door body from the direction-changing angle Gz to the eighth angle G8, a central axis of the first shaft moves relative to the guide trajectory line, a central axis of the second shaft moves relative to the direction-guiding trajectory line, and the door body moves towards a side close to the second body side wall and away from the access opening while rotating; wherein, G8 > 90°.

6. The refrigerator according to claim 5, wherein, an absolute value of a difference between the closed angle GG and the direction-changing angle Gz is denoted as |GG-GZ|, and an absolute value of a difference between the closed angle GG and the eighth angle G8 is denoted as |GG-G8|; |GG-GZ|:|GG-G8| is greater than or equal to a first reference ratio; and the first reference ratio is any value of 0.01, 0.02, or 0.03; and |GG-GZ|:|GG-G8| is less than or equal to a second reference ratio; and the second reference ratio is any value of 0.04, 0.06, or 0.07.

7. The refrigerator according to claim 5, wherein, in the projection on the plane where the top wall of the refrigerator body is located, a line segment where the central axis of the first shaft and the central axis of the second shaft are located is denoted as an axial line segment PQ, and a midpoint of the axial line segment PQ is denoted as an axial midpoint I; when the door body is opened to the direction-changing angle GZ, the axial midpoint I moves to a direction-changing midpoint IZ; when the door body is opened to the direction-altering angle G', the axial midpoint I moves to a direction-altering midpoint I'; when the door body is opened to the eighth angle G8, the axial midpoint I moves to an eighth midpoint I8; during a process of opening the door body from the closed angle GG to the eighth angle G8, relative to the door body, the axial midpoint I firstly moves towards a side away from the door side wall and the door front wall to the direction-changing midpoint Iz, then moves from the direction-changing midpoint IZ towards a side close to the door side wall and away from the door front wall to the direction-altering midpoint I', and then moves from the direction-altering midpoint I' towards a side close to the door side wall and the door front wall to the eighth midpoint I8; wherein, GG < GZ < G' ≤ 90° < G8.

8. The refrigerator according to claim 7, wherein, when the door body is opened to a starting angle G0, the central axis of the second shaft moves to a starting direction-guiding point Q0; wherein, the starting direction-guiding point Q0 is a point on the direction-guiding trajectory line where a distance from the door side wall is the largest; a difference between the starting angle G0 and the direction-changing angle Gz is denoted as G0-GZ; G0-GZ is greater than or equal to a first angle reference value; and the first angle reference value is 0°; and G0-GZ is less than or equal to a second angle reference value; and the second angle reference value is any value of 1°, 1.5°, or 2°.

9. The refrigerator according to any one of claims 3 to 8, wherein, when the door body is at the closed angle GG, the central axis of the first shaft is at a ninth guide point P9, and the central axis of the second shaft is at a ninth direction-guiding point Q9; the guide trajectory line comprises a negative-direction guide point P-; the negative-direction guide point P- is located at a side of the ninth guide point P9 away from the door front wall and close to the door side wall; the direction-guiding trajectory line comprises a negative-direction direction-guiding point Q-; the negative-direction direction-guiding point Q- is located at a side of the ninth direction-guiding point Q9 close to the door front wall and the door side wall; when the door body is at a negative-direction angle G-, the central axis of the first shaft is located at the negative-direction guide point P-, and the central axis of the second shaft is located at the negative-direction direction-guiding point Q-; when the door body continues to close from the closed angle GG to the negative-direction angle G-, the central axis of the first shaft moves along the guide trajectory line towards a side away from the door front wall and close to the door side wall to the negative-direction guide point P-, and the central axis of the second shaft moves along the direction-guiding trajectory line towards a side close to the door front wall and the door side wall to the negative-direction direction-guiding point Q-.

10. A refrigerator, comprising: a refrigerator body, comprising: a storage compartment, comprising an access opening; a first body side wall; and a second body side wall, disposed opposite to the first body side wall; a door body, comprising: a door front wall, the door front wall being a side wall away from the refrigerator body when the door body is closed; and a door side wall, close to the first body side wall and connected to the door front wall; a hinge assembly connecting the refrigerator body and the door body to enable the door body to rotate relative to the refrigerator body to open or close the access opening; the hinge assembly comprises: a hinge plate, comprising: a connection portion, connected to the refrigerator body and close to the first body side wall; an extension portion, extending forward from the connection portion; a first shaft, disposed at the extension portion; a second shaft, disposed at the extension portion; a guide portion, disposed at the door body and close to the door side wall; the first shaft cooperating with the guide portion; and a direction-guiding portion, disposed at the door body and close to the door side wall; the second shaft cooperating with the direction-guiding portion; wherein during a process of opening the door body from a closed state, the first shaft moves relative to the guide portion, and the second shaft moves relative to the direction-guiding portion; wherein, a displacement coordinate system AOB is established in a projection on a plane where a top wall of the refrigerator body is located; wherein, in the displacement coordinate system AOB, OB is perpendicular to a plane where the access opening is located, and takes a direction from the access opening pointing toward the door front wall when the door body is closed as positive; OA is parallel to the plane where the access opening is located, and takes a direction from the second body side wall pointing toward the first body side wall as positive; and the displacement coordinate system AOB is a coordinate system that is stationary relative to the refrigerator body; wherein, during an entire process of opening the door body from a negative-direction angle G- to an eighth angle G8, the door body has a first direction displacement S1 parallel to the door front wall and a second direction displacement S2 parallel to the door side wall while rotating; wherein, a component displacement of the first direction displacement S1 along the A axis is A1, and a component displacement of the first direction displacement S1 along the B axis is B1; a component displacement of the second direction displacement S2 along the A axis is A2, and a component displacement of the second direction displacement S2 along the B axis is B2; during a process of opening the door body from the negative-direction angle G- to 0°, A1 > 0, B1 > 0; A2 < 0, B2 > 0; A0 = A1 + A2 > 0, B0 = B1 + B2 > 0; during a process of opening the door body from 0° to a direction-changing angle GZ, A1 > 0, B1 < 0; A2 > 0, B2 > 0; A0 = A1 + A2 > 0, B0 = B1 + B2 > 0; during a process of opening the door body from the direction-changing angle Gz to a direction-altering angle G', A1 < 0, B1 > 0; A2 > 0, B2 > 0; A0 = A1 + A2 < 0, eB0 = B1 + B2 > 0; during a process of opening the door body from the direction-altering angle G' to 90°, A1 < 0, B1 > 0; A2 < 0, B2 < 0; A0 = A1 + A2 < 0, B0 = B1 + B2 > 0; when the door body is opened to 90°, A1 = 0, B1 > 0; A2 < 0, B2 = 0; A0 = A1 + A2 < 0, B0 = B1 + B2 > 0; during a process of opening the door body from 90° to the eighth angle Gs, A1 > 0, B1 > 0; A2 < 0, B2 > 0; A0 = A1 + A2 < 0, B0 = B1 + B2 > 0; wherein, G- < 0° < Gz < G' < 90° < G8.

11. The refrigerator according to claim 10, wherein, the guide portion comprises a guide trajectory line; the guide trajectory line starts from its end away from the door side wall, extends firstly in a direction getting away from the door front wall and getting closer to the door side wall, and then extends in a direction getting closer to the door front wall and the door side wall; and the direction-guiding portion comprises a direction-guiding trajectory line; the direction-guiding trajectory line starts from its end away from the door side wall, extends firstly in a direction getting away from the door front wall and the door side wall, and then extends in a direction getting away from the door front wall and getting closer to the door side wall, and then extends in a direction getting closer to the door front wall and the door side wall.

12. The refrigerator according to claim 11, wherein, during a process of opening the door body from a closed angle GG to the direction-changing angle Gz, the first shaft moves relative to the guide portion firstly towards a side away from the door side wall and close to the door front wall, and then towards a side close to the door side wall and away from the door front wall; the second shaft moves relative to the direction-guiding portion towards a side away from the door side wall and the door front wall, and the door body moves towards a side away from the second body side wall and the access opening by a first predetermined distance.

13. The refrigerator according to claim 11, wherein, during a process of opening the door body from a closed angle GG to the direction-changing angle Gz, the first shaft moves relative to the guide portion towards a side close to the door side wall and away from the door front wall; the second shaft moves relative to the direction-guiding portion towards a side away from the door side wall and the door front wall, and the door body moves towards a side away from the second body side wall and the access opening by a second predetermined distance.

14. The refrigerator according to claim 12 or 13, wherein during a process of opening the door body from the direction-changing angle Gz to the eighth angle G8, a central axis of the first shaft moves relative to the guide trajectory line, a central axis of the second shaft moves relative to the direction-guiding trajectory line, and the door body moves towards a side close to the second body side wall and away from the access opening while rotating; wherein, G8 > 90°.

15. The refrigerator according to claim 14, wherein, an absolute value of a difference between the closed angle GG and the direction-changing angle Gz is denoted as |GG-GZ|, and an absolute value of a difference between the closed angle GG and the eighth angle G8 is denoted as |GG-G8|; |GG-GZ|:|GG-G8| is greater than or equal to a first reference ratio; and the first reference ratio is any value of 0.01, 0.02, or 0.03; and |GG-GZ|:|GG-G8| is less than or equal to a second reference ratio; and the second reference ratio is any value of 0.04, 0.06, or 0.07.

16. The refrigerator according to claim 14, wherein, in the projection on the plane where the top wall of the refrigerator body is located, a line segment where the central axis of the first shaft and the central axis of the second shaft are located is denoted as an axial line segment PQ, and a midpoint of the axial line segment PQ is denoted as an axial midpoint I; when the door body is opened to the direction-changing angle Gz, the axial midpoint I moves to a direction-changing midpoint IZ; when the door body is opened to the direction-altering angle G', the axial midpoint I moves to a direction-altering midpoint I'; when the door body is opened to the eighth angle G8, the axial midpoint I moves to an eighth midpoint Is; during a process of opening the door body from the closed angle GG to the eighth angle G8, relative to the door body, the axial midpoint I firstly moves towards a side away from the door side wall and the door front wall to the direction-changing midpoint IZ, then moves from the direction-changing midpoint Iz towards a side close to the door side wall and away from the door front wall to the direction-altering midpoint I', and then moves from the direction-altering midpoint I' towards a side close to the door side wall and the door front wall to the eighth midpoint I8; wherein, GG < GZ < G' ≤ 90° < G8.

17. The refrigerator according to claim 16, wherein, when the door body is opened to a starting angle G0, the central axis of the second shaft moves to a starting direction-guiding point Q0; wherein, the starting direction-guiding point Q0 is a point on the direction-guiding trajectory line where a distance from the door side wall is the largest; a difference between the starting angle G0 and the direction-changing angle Gz is denoted as G0-GZ; G0-GZ is greater than or equal to a first angle reference value; and the first angle reference value is 0°; and G0-GZ is less than or equal to a second angle reference value; and the second angle reference value is any value of 1°, 1.5°, or 2°.

18. The refrigerator according to any one of claims 12 to 17, wherein, when the door body is at the closed angle GG, the central axis of the first shaft is at a ninth guide point P9, and the central axis of the second shaft is at a ninth direction-guiding point Q9; the guide trajectory line comprises a negative-direction guide point P-; the negative-direction guide point P- is located at a side of the ninth guide point P9 away from the door front wall and close to the door side wall; the direction-guiding trajectory line comprises a negative-direction direction-guiding point Q-; the negative-direction direction-guiding point Q- is located at a side of the ninth direction-guiding point Q9 close to the door front wall and the door side wall; when the door body is at a negative-direction angle G-, the central axis of the first shaft is located at the negative-direction guide point P-, and the central axis of the second shaft is located at the negative-direction direction-guiding point Q-; when the door body continues to close from the closed angle GG to the negative-direction angle G-, the central axis of the first shaft moves along the guide trajectory line towards a side away from the door front wall and close to the door side wall to the negative-direction guide point P-, and the central axis of the second shaft moves along the direction-guiding trajectory line towards a side close to the door front wall and the door side wall to the negative-direction direction-guiding point Q-.

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