refrigerator

Abstract

A refrigerator, including a refrigerator body, a door body, and a hinge assembly. The hinge assembly includes a hinge plate, a first shaft and a second shaft, a guide portion, and a direction-guiding portion. When the door body is opened to 90°, a central axis of the first shaft is moved to a seventh guide point P7 of the guide trajectory line, and a central axis of the second shaft is moved to a seventh direction-guiding point Q7 of the guide trajectory line. When the door body is opened to G8, a central axis of the first shaft is moved to an eighth guide point P8 of the guide trajectory line, and a central axis of the second shaft is moved to an eighth direction-guiding point Q8 of the guide trajectory line. An included angle between a straight line P7P8 and the door side-wall is denoted as a guide side inclined angle µ'P. An included angle between a straight line P7Q7 and the door side-wall is denoted as a first side inclined angle µ'PQ. µ'P belongs to any value of 11° to 15°, and µ'PQ belongs to any value of 10° to 20°.

Description

CROSS REFERENCES TO RELATED APPLICATIONS

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

[0002] The present disclosure relates to the field of household appliance 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 housing cabinet when the refrigerator is built in the external housing cabinet, the gap between the outer wall of the refrigerator and the inner wall of the housing cabinet is generally set small. At this time, when the refrigerator door of the refrigerator is to be opened, it is limited by the space of the housing cabinet, and the hinged vertical side of the rotating refrigerator door may easily hit the inner wall of the external housing cabinet. In order to ensure that the refrigerator door can be effectively opened, it is necessary to ensure that the corners of the door body would not exceed the size of the refrigerator body too much during the opening process of the refrigerator door.

[0004] At present, in order to meet the installation requirements of built-in refrigerators, for most built-in refrigerators, one of the refrigerator door and the refrigerator body is provided with double shafts, and the other thereof is provided with a guide structure cooperating with the double shafts. In this way, the refrigerator door is controlled to move inward while rotating to open. Under the configuration in which the double shafts cooperate with the guide structure, the refrigerator door is moved inward during the opening process of the refrigerator door, so as to ensure that the corners of the door body would not exceed the size of the refrigerator body too much during the opening process of the refrigerator door.

[0005] 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 refrigerator door of the refrigerator is closed, the front wall of the refrigerator door 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 refrigerator door 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 refrigerator door of the refrigerator, the front wall of the refrigerator door moves closer to the adjacent end of the housing cabinet close to its own opening. When the front wall of the refrigerator door 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. In summary, the limit angle to which the refrigerator door 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 refrigerator door of the refrigerator installed in the housing cabinet can be opened is small, and it is inconvenient for the user to take out or put in articles.SUMMARY

[0006] In an aspect, there is provided a refrigerator including a refrigerator body, a door body, and a hinge assembly. The refrigerator body defines a storage compartment having an access opening. The refrigerator body includes a first body side-wall and a second body side-wall disposed opposite to each other. The door body has a door front-wall that is remote from the refrigerator body when the door body is closed, and a door side-wall that is close to the first body side-wall and is connected to the door front-wall. The 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 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 that is connected to the refrigerator body and is close to the first body side-wall, and an extension portion extending forwardly from the connection portion. The first shaft and the second shaft are disposed on the extension portion. The guide portion and the direction-guiding portion are both provided on 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. The guide portion has a guide trajectory line. The guide trajectory line starts from a starting guide point P0 at one end of the guide portion that is 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 till an eighth guide point P8 at one end of the guide portion that is close to the door side-wall. The direction-guiding portion has a direction-guiding trajectory line. The direction-guiding trajectory line starts from a starting direction-guiding point Q0 at one end of the direction-guiding portion that is 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 till an eighth direction-guiding point Q8 at one end of the direction-guiding portion that is close to the door side-wall. When the door body is opened to 90°, a central axis of the first shaft is moved to a seventh guide point P7 of the guide trajectory line, and a central axis of the second shaft is moved to a seventh direction-guiding point Q7 of the guide trajectory line. When the door body is opened to an eighth angle G8, the central axis of the first shaft is moved to the eighth guide point P8 of the guide trajectory line, and the central axis of the second shaft is moved to the eighth direction-guiding point Q8 of the guide trajectory line. Where G8 is an obtuse angle. A straight line where the seventh guide point P7 and the eighth guide point P8 are located is denoted as a straight line P7P8, and an included angle between the straight line P7P8 and the door side-wall is denoted as a guide side inclined angle µ'P. A straight line where the seventh direction-guiding point Q7 and the seventh guide point P7 are located is denoted as a straight line P7Q7, and an included angle between the straight line P7Q7 and the door side-wall is denoted as a first side inclined angle µ'PQ. Where the guide side inclined angle µ'P belongs to any value of 11° to 15°, and the first side inclined angle µ'PQ belongs to any value of 10° to 20°. During a process in which the door body is opened from a closed state, the first shaft moves with respect to the guide portion, and the second shaft moves with respect to the direction-guiding portion.

[0007] In another aspect, there is provided a refrigerator including a refrigerator body, a door body, and a hinge assembly. The refrigerator body defines a storage compartment having an access opening. The refrigerator body includes a first body side-wall and a second body side-wall disposed opposite to each other. The door body has a door front-wall that is remote from the refrigerator body when the door body is closed, and a door side-wall that is close to the first body side-wall and is connected to the door front-wall. The 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 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 that is connected to the refrigerator body and is close to the first body side-wall, and an extension portion extending forwardly from the connection portion. The first shaft and the second shaft are disposed on the extension portion. The guide portion and the direction-guiding portion are both provided on 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. The guide portion has a guide trajectory line. The guide trajectory line starts from a starting guide point P0 at one end of the guide portion that is 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 till an eighth guide point P8 at one end of the guide portion that is close to the door side-wall. The direction-guiding portion has a direction-guiding trajectory line. The direction-guiding trajectory line starts from a starting direction-guiding point Q0 at one end of the direction-guiding portion that is 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 till an eighth direction-guiding point Q8 at one end of the direction-guiding portion that is close to the door side-wall. When the door body is opened to 90°, a central axis of the first shaft is moved to a seventh guide point P7 of the guide trajectory line, and a central axis of the second shaft is moved to a seventh direction-guiding point Q7 of the guide trajectory line. When the door body is opened to an eighth angle G8, the central axis of the first shaft is moved to the eighth guide point P8 of the guide trajectory line, and the central axis of the second shaft is moved to the eighth direction-guiding point Q8 of the guide trajectory line. Where G8 is an obtuse angle. A straight line where the seventh guide point P7 and the eighth guide point P8 are located is denoted as a straight line P7P8, and an included angle between the straight line P7P8 and the door side-wall is denoted as a guide side inclined angle µ'P. A straight line where the seventh direction-guiding point Q7 and the seventh guide point P7 are located is denoted as a straight line P7Q7, and an included angle between the straight line P7Q7 and the door side-wall is denoted as a first side inclined angle µ'PQ. Where the guide side inclined angle µ'P belongs to any value of 11° to 15°, and the first side inclined angle µ'PQ belongs to any value of 10° to 20°. During a process in which the door body is opened from a closed state, the first shaft moves in a direction getting closer to the door side-wall with respect to the guide portion, and the second shaft moves in a direction getting closer to the door side-wall with respect to the direction-guiding portion.BRIEF DESCRIPTION OF THE DRAWINGS

[0008] 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 axis 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 schematic 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 schematic diagram of situations of movements of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion of a refrigerator according to some embodiments. FIG. 17 is diagram of positions of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion when a door body of a refrigerator is opened to φ = G 1 according to some embodiments. FIG. 18 is diagram of positions of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion when a door body of a refrigerator is opened to φ = G 2 according to some embodiments. FIG. 19 is diagram of positions of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion when a door body of a refrigerator is opened to φ = G 3 according to some embodiments. FIG. 20 is diagram of positions of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion when a door body of a refrigerator is opened to φ = G 4 according to some embodiments. FIG. 21 is diagram of positions of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion when a door body of a refrigerator is opened to φ = G 5 according to some embodiments. FIG. 22 is diagram of positions of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion when a door body of a refrigerator is opened to φ = G 6 according to some embodiments. FIG. 23 is diagram of positions of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion when a door body of a refrigerator is opened to φ = G 7 according to some embodiments. FIG. 24 is diagram of positions of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion when a door body of a refrigerator is opened to φ = G 8 according to some embodiments. FIG. 25 is diagram of relative positions of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion during an opening process in a second stage of a door body of a refrigerator according to some embodiments. FIG. 26 is diagram of relative positions of a first shaft relative to a guide portion and a second shaft relative to the 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 diagram of relative positions of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion during an opening process in a third stage of a door body of a refrigerator according to some embodiments. FIG. 28 is a diagram of a relative position 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 a relative position of a door body and a refrigerator body when an opening angle φ of the door body of a refrigerator ∈ (0°, G') according to some embodiments. FIG. 30 is a diagram of a relative position of a door body and a refrigerator body when an opening angle φ of the door body of a refrigerator ∈ (G', 90°) according to some embodiments. FIG. 31 is a diagram of a relative position 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 a relative position of a door body and a refrigerator body when an opening angle φ of the door body of a refrigerator ∈ (90°, G max ) according to some embodiments. FIG. 33 is a schematic diagram of situations of movements of a first shaft relative to a guide portion and a second shaft relative to the direction-guiding portion during an opening process of a door body of an existing refrigerator comparing with a refrigerator according to some embodiments. FIG. 34 is a schematic 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 an existing refrigerator compared with a refrigerator according to some embodiments. 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 with an axis midpoint I when it is closed as the 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 with an axis midpoint I when it is opened to G 2 as the 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 with an axis midpoint I when it is opened to G 3 as the 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 with an axis midpoint I when it is opened to G 4 as the 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 with an axis midpoint I when it is opened to G 5 as the 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 with an axis midpoint I when it is opened to G 6 as the 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 with an axis midpoint I when it is opened to G 6 as the 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 with an axis midpoint I when it is opened to G max as the rotation axis according to some embodiments. FIG. 43 is a diagram of comparison between translational movements when a door body of a refrigerator is opened to two angles of φ i and φ (i+1) respectively according to some embodiments. FIG. 44 is a schematic diagram of a relative positional relationship between an axis midpoint trajectory of a refrigerator and a midplane of a door body according to some embodiments. FIG. 45 is a schematic diagram of situations of movements of a first shaft relative to a direction-guiding portion and a second shaft relative to the guide portion of a refrigerator and their relative positions with respect to a first angular bisector plane and a second angular bisector plane according to some embodiments. FIG. 46 is a schematic diagram of relative positions of an axis midpoint, a first angular bisector plane, and a second angular 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 schematic diagram of relative positions of a first shaft, a second shaft, a first angular bisector plane, and a second angular 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 having a guide trajectory line in another configuration form when the door body is closed according to some embodiments. FIG. 49 is a schematic diagram of a second hinge member of a refrigerator in another configuration form according to some embodiments. FIG. 50 is a schematic diagram of a second hinge member of a refrigerator in yet another configuration form according to some embodiments. FIG. 51 is a schematic diagram of various parameters when a door body of a refrigerator is in a closed state according to some embodiments. FIG. 52 is a schematic diagram of various parameters when a door body of a refrigerator is opened to a maximum angle according to some embodiments. FIG. 53 is a schematic diagram of a door body of a refrigerator when the door body is closed in a coordinate system XOY according to some embodiments. FIG. 54 is a schematic diagram of a door body of a refrigerator when the door body is rotated θ° in a coordinate system XOY according to some embodiments. FIG. 55 is a schematic diagram when a first shaft of a door body of a refrigerator moves along a circular arc according to some embodiments. FIG. 56 is a schematic diagram of a door body of a refrigerator when the door body is in a closed state in a coordinate system XOY according to some embodiments. FIG. 57 is a schematic diagram when a door body of a refrigerator is opened to a maximum angle in a coordinate system XOY according to some embodiments. FIG. 58 is a schematic diagram of a door body of a refrigerator when the door body is opened to an angle being an acute angle in a coordinate system XOY according to some embodiments. FIG. 59 is a schematic diagram of a door body of a refrigerator when the door body is opened to an angle being a right angle in a coordinate system XOY according to some embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0009] 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.

[0010] 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 a 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.

[0011] In the descriptions of the embodiments of the present disclosure, unless otherwise stated, "a plurality of" means two or more.

[0012] In describing some embodiments, the expressions "coupled", "installed", "interconnected", and "connected" and their extended expressions may be used. The term "installed", "interconnected", and "connected" should be understood in a broad sense, for example, it 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, or may also be communication within two elements. 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.

[0013] "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.

[0014] "A and / or B" includes a combination of the following three: A alone, B alone, and a combination of A and B.

[0015] 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.

[0016] 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).

[0017] As used herein, "parallel", "perpendicular", and "equal" include the set forth circumstances as well as circumstances similar to the set forth circumstances, 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.

[0018] In the description of the present disclosure, it should be understood that orientation or position relationships that are indicated by the terms "center", "above", "front", "rear", "under", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside", and the like are orientation or position relationships shown based on the accompanying drawings, and are merely for convenience of the description of the present disclosure and simplifying description, rather than indicating or implying that the indicated appliance or element must have a particular orientation or being constructed and operated in a particular orientation, and are therefore not to be construed as limitation of the present disclosure.

[0019] The terms "first", "second", "third", "fourth", and "fifth" 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", "second", "third", "fourth", or "fifth" may explicitly or implicitly include one or more of the features.

[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 of the present disclosure, referring to FIG. 1, the refrigerator includes a refrigerator body 10. The refrigerator body 10 defines a plurality of storage compartments 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.

[0022] In some embodiments of the present disclosure, the refrigerator has a refrigeration device that supplies cold air to the storage compartment to perform low-temperature storage of items placed in the storage compartment. The refrigerator body 10 is provided with a rotatable door body 30 to open or close the access opening of the storage compartment.

[0023] In some embodiments of the present disclosure, the refrigerator further includes a door body 30. The door body 30 is connected to the refrigerator body 10 to open and close the storage compartment. 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.

[0024] In some embodiments of the present disclosure, the hinge assembly includes a first hinge member, and the first hinge member may be disposed on one of the refrigerator body 10 and the door body 30.

[0025] In some embodiments of the present disclosure, the hinge assembly further includes a second hinge member, and the second hinge member may be disposed on the other of the refrigerator body 10 and the door body 30. The first hinge member cooperates with the second hinge member and they are rotatable relative to each other.

[0026] In some embodiments of the present disclosure, the refrigerator body 10 includes a first body side wall, which is, for example, a left side wall of the refrigerator body 10.

[0027] In some embodiments of the present disclosure, the refrigerator body 10 further includes a second body side wall, the second body side wall is disposed opposite to the first body side wall, and the second body side wall is, for example, a right side wall of the refrigerator body 10.

[0028] For example, the first hinge member is disposed on the refrigerator body 10 and is close to the first body side wall, and the second hinge member is disposed at the end of the door body 30 close to the first hinge member. The first hinge member cooperates with the second hinge member to allow the door body 30 to rotate relative to the refrigerator body 10.

[0029] In some embodiments of the present disclosure, the door body 30 includes a door front wall 31 that is away from the refrigerator body 10 when the door body 30 is closed.

[0030] In some embodiments of the present disclosure, 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.

[0031] In some embodiments of the present disclosure, 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.

[0032] For example, when the first hinge member is located on the right side of the refrigerator body 10, the right side surface of the door body 30 is the door side wall 32 when the door body 30 is closed; when the first hinge member is located on the left side of the refrigerator body 10, the left side wall of the door body 30 is the door side wall 32 when the door body 30 is closed.

[0033] It is to be noted that, the above door front wall 31 is, after it has been molded into a product, a surface on the side of the door body 30 that is away from the refrigerator body 10 when the door body 30 is in the closed state.

[0034] In some embodiments of the present disclosure, the door body 30 further includes a door frame and a glass panel. Correspondingly, when the door body 30 is closed, the surface of the glass panel away from the refrigerator body is the door front wall 31.

[0035] 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.

[0036] 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 actual production and processing installation, 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. 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).

[0037] In the present disclosure, for convenience of description, the theoretical first side edge W and the theoretical second side edge N are used for description.

[0038] 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.

[0039] It should be noted here that, in the present disclosure, in the related technical solutions relates 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 the present disclosure, in the related technical solutions relates 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.

[0040] In some embodiments of the present disclosure, a door seal strip 5 is provided on the door rear wall 33.

[0041] 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 effectively 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.

[0042] In some embodiments of the present disclosure, 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.

[0043] 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.

[0044] In some embodiments of the present disclosure, referring to FIGS. 2-3, the first hinge member includes a hinge plate 40.

[0045] In some embodiments of the present disclosure, the hinge plate 40 includes a connection portion connected to the refrigerator body 10 and close to the first body side wall. The connection portion may be fastened to the top wall of the refrigerator body 10 by fasteners such as screws, pins, or bolts.

[0046] In some embodiments of the present disclosure, the hinge plate 40 further includes an extension portion extending forward from the connection portion. For example, the extension portion has a horizontal plate shape.

[0047] In some embodiments of the present disclosure, referring to FIG. 6, the first hinge member includes a first shaft 41 and a second shaft 42. The first shaft 41 and the second shaft 42 are provided on the hinge plate 40.

[0048] For example, for the hinge at the upper end of the door body 30, the connection portion may be connected to the top wall of the refrigerator body 10. For the hinge at the lower end of the door body 30, the connection portion may be connected to the front end surface of the refrigerator body 10.

[0049] In some embodiments of the present disclosure, the first shaft 41 and the second shaft 42 are formed on the extension portion of the first hinge member.

[0050] In some embodiments of the present disclosure, the second shaft 42 is located on a side of the first shaft 41 away from the first body side wall.

[0051] In some embodiments of the present disclosure, the second hinge member further includes a guide portion 50 located on the door body 30. The guide portion 50 is close to the first hinge member. The first shaft 41 is fitted to the guide portion 50.

[0052] In some embodiments of the present disclosure, the second hinge member further includes a direction-guiding portion 60 located on the door body 30. The direction-guiding portion 60 is close to the first hinge member. The second shaft 42 is fitted to the direction-guiding portion 60.

[0053] 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.

[0054] In some embodiments of the present disclosure, 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.

[0055] The first shaft 41 and the second shaft 42 are formed in the first hinge member connected to the refrigerator body 10, to form a defined shaft that guides the movement of the door body 30.

[0056] In some embodiments of the present disclosure, the first shaft 41 and the second shaft 42 extend in the vertical direction (the height direction of the refrigerator body 10) to adapt to the guide portion 50 or the direction-guiding portion 60 provided on the door body 30.

[0057] It can be understood that, the built-in refrigerator is a refrigerator integrally built into a customized housing cabinet, and the end surface of the housing cabinet defining its opening is referred to as an opening end surface. When the refrigerator is built within the housing cabinet and the door body of the refrigerator is closed, the door front wall 31 of the door body 30 is flush with the opening end surface of the housing cabinet.

[0058] In the present disclosure, the first shaft 41 cooperates with the guide portion 50 and the second shaft 42 cooperates with the direction-guiding portion 60 to move the door body 30 inward by a certain distance, so that 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 effectively avoiding impact damage on the housing cabinet or the door body 30 of the refrigerator.

[0059] In addition, when the door body 30 of the refrigerator placed in the storage 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° (configurable, the maximum angle can be set to be greater than or equal to 120°), so that the door body 30 can be completely opened when the refrigerator is in the built state, so as to facilitate the retrieval of the objects.

[0060] 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 the they are on the same plane, or a case where the distance between the two planes is 2 mm or less.

[0061] 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. Alternatively, 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.

[0062] In some embodiments of the present disclosure, descriptions are made by taking an example in which the extension portions located at both the upper end and the lower end of the door body 30 are each 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 each provided with the guide portion 50 and the direction-guiding portion 60. 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, and the door body 30 and the refrigerator body 10 may be connected in any configurations as needed, and the present disclosure is not limited thereto.

[0063] In some embodiments of the present disclosure, as shown in FIGS. 2 to 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.

[0064] When the refrigerator is placed in the housing cabinet 100 for use, in order to take precautions against the factors that the user's floor is uneven and that the housing cabinet 100 is deformed, when designing the size of the housing cabinet 100, a distance α' is left between the housing cabinet 100 and the side surface of the refrigerator (the first body side wall, that is, the reference plane M 0 ). In order to ensure normal opening of the door body 30 of the refrigerator, during rotation of the door body 30, the first side edge W of the door body 30 cannot exceed the side surface (the reference plane M 0 ) of the refrigerator body 10 too much, 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.

[0065] In some embodiments of the present disclosure, α' belongs to any value of 3 mm to 5 mm.

[0066] In some embodiments of the present disclosure, α' = 3 mm. That is, the distance between the door side wall of the door body 30 and the housing cabinet is 3 mm. In this way, the space requirement to place the refrigerator into the housing cabinet 100 is satisfied, and the gap between the refrigerator body 10 and the housing cabinet 100 after the refrigerator is placed in the housing cabinet 100 is reduced as much as possible, so as to improve the fitting degree between the refrigerator and the housing cabinet 100 and realize the hidden installation.

[0067] 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 first side edge W would not exceed the side surface (the reference plane M 0 ) of the refrigerator body 10 too much. For example, if 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. If 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.

[0068] In some embodiments of the present disclosure, 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.

[0069] In some embodiments of the present disclosure, as shown in FIG. 3, in the projection on the top wall of the refrigerator body 10, the second central axis Q is located on the side of the first central axis P away from the plane where the first body side wall and the access opening are located.

[0070] In some embodiments of the present disclosure, in the projection on the top wall of the refrigerator body 10, the second central axis Q is located on the side of the first central axis P 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°.

[0071] In some embodiments of the present disclosure, 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°.

[0072] In some embodiments of the present disclosure, the guide portion 50 is provided as a guide groove.

[0073] In some embodiments of the present disclosure, the guide groove is a curved line groove.

[0074] In some embodiments of the present disclosure, the direction-guiding portion 60 is provided as a direction-guiding groove.

[0075] In some embodiments of the present disclosure, the direction-guiding groove is a curved line groove.

[0076] In some embodiments of the present disclosure, the guide groove is located on a side of the direction-guiding groove close to the first side edge W.

[0077] When the door body 30 is opened, 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.

[0078] When the door body 30 is opened, 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.

[0079] When the guide portion 50 is provided in a structure manner of a guide groove, the center trajectory line of the guide groove is referred to as a guide trajectory line S.

[0080] When the direction-guiding portion 60 is provided in a structure manner of a direction-guiding groove, the center trajectory line of the direction-guiding groove is a direction-guiding trajectory line K.

[0081] In some embodiments of the present disclosure, 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 guide trajectory line S and the door front wall 31 first increases and then decreases.

[0082] 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.

[0083] In some embodiments of the present disclosure, the guide trajectory line S extends from one end thereof away from the door side wall 32 to one end thereof close to the door side wall 32.

[0084] In some embodiments of the present disclosure, 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.

[0085] In some embodiments of the present disclosure, the direction-guiding trajectory line K extends from its one end away from the door side wall 32 to its one end close to the door side wall 32.

[0086] In some embodiments of the present disclosure, the direction-guiding trajectory line K is a curved line.

[0087] In some embodiments of the present disclosure, 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.

[0088] In some embodiments of the present disclosure, the guide trajectory line S is located on a side of the direction-guiding trajectory line K close to the first side edge W.

[0089] In some embodiments of the present disclosure, 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.

[0090] In some embodiments of the present disclosure, the guide trajectory line S includes a second guide segment connected to one end of the first guide segment close to the door side wall 32. The second guide segment extends from one 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.

[0091] In some embodiments of the present disclosure, 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.

[0092] In some embodiments of the present disclosure, the direction-guiding trajectory line K includes a second direction-guiding segment connected to one end of the first direction-guiding segment close to the door side wall 32. The second direction-guiding segment extends from one 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.

[0093] In some embodiments of the present disclosure, as 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 (configurable, the door front wall 31 is perpendicular to the door side wall 32). Where 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.

[0094] In some embodiments of the present disclosure, 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 asY 1 = F(X 1 ), Y 1 = F(X 1 ) is a piecewise function.

[0095] If the above piecewise function is a continuous function, then at each breakpoint, the left limit is equal to the right limit.

[0096] In some embodiments of the present disclosure, 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 ; Where X 10 > X 14 > X 15 > 0; F 1 (X 14 ) = F 2 (X 14 ). Y 1 = F 1 (X 1 ) is a function of the first guide segment in the coordinate system X 1 O 1 Y 1 . Y 1 = F 2 (X 1 ) is a function of the second guide segment in the coordinate system X 1 O 1 Y 1 .

[0097] The end point of the first guide segment away from the door side wall 32 is denoted as a starting guide point P 0 . 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 )). Where X 10 > X 14 > X 18 > 0.

[0098] In some embodiments of the present disclosure, |X 10 -X 14 |:|X 14 -X 18 | > 1. 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.

[0099] In some embodiments of the present disclosure, in 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.

[0100] In some embodiments of the present disclosure, referring to FIG. 4, 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 . 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 front wall 31 is denoted as β 2 . Wherein β 1 < β 2 ; β 1∈ (0°, 90°), β 2∈ (0°, 90°).

[0101] In some embodiments of the present disclosure, tan β 2 > 1 > tan β 1 > 0.

[0102] In some embodiments of the present disclosure, 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 '. 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 '. Where β 2 ' < β 1 '; β 1 ' ∈ (0°, 90°), β 2 ' ∈ (0°, 90°).

[0103] In some embodiments of the present disclosure, tan β 1 ' > 1 > tan β 2 ' > 0.

[0104] In some embodiments of the present disclosure, when the door body 30 is in the closed state, the first central axis P is located at the starting guide point P 0 relative to the door body 30.

[0105] 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 .

[0106] 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 (configurable, 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 ).

[0107] Then, when the door body 30 is opened from the closed state 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 .

[0108] In some embodiments of the present disclosure, 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 ; where, F' 2 > 0 > F' 1 .

[0109] In some embodiments of the present disclosure, 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.

[0110] In some embodiments of the present disclosure, the overall extension trend of the first guide segment is more gradual than the overall extension trend of the second guide segment.

[0111] In some embodiments of the present disclosure, F' 1 < 0.

[0112] In some embodiments of the present disclosure, | F' 1 | belongs to any value of 0.25 to 0.35.

[0113] In some embodiments of the present disclosure, F' 2 > 0.

[0114] In some embodiments of the present disclosure, F' 2 belongs to any value of 1.1 to 1.4.

[0115] The lateral length (in the X-axis direction) of the first guide line is greater than the longitudinal length (in the Y-axis direction) of the first guide line. That is, |X 10 - X 14 | > |F 1 (X 14 ) - F 1 (X 10 )|.

[0116] The lateral length (in the X-axis direction) of the second guide line is smaller than the longitudinal length (in the Y-axis direction) of the second guide line. That is, |X 14 - X 19 | < |F 2 (X 18 ) - F 1 (X 14 )|.

[0117] In some embodiments of the present disclosure, the second derivative of Y 1 = F(X 1 ) is denoted as F''(X 1 ). Where, 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.

[0118] In some embodiments of the present disclosure, 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 asY 1 = K(X 1 ), Y 1 = K(X 1 ) is a piecewise function.

[0119] If the above piecewise function is a continuous function, then at each breakpoint, the left limit is equal to the right limit.

[0120] 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 ′ ; Where X 10 ' > X 16 ' > X 18 ' > 0; K 1 (X 16 ') = K 2 (X 16 '). 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 . 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 .

[0121] In some embodiments of the present disclosure, the second derivative of Y 1 = K(X 1 ) is denoted as K''(X 1 ). Where 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.

[0122] In some embodiments of the present disclosure, the guide trajectory line S has 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.

[0123] In some embodiments of the present disclosure, 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.

[0124] 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.

[0125] In some embodiments, the guide trajectory line S starts from the starting guide point P 0 , and firstly extends successively through the first guide point P 1 , the second guide point P 2 , and the third guide point P 3 , and to the fourth guide point P 4 , in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and then it extends from the fourth guide point P 4 successively through the fifth guide point P 5 , the sixth guide point P 6 , and the seventh guide point P 7 , and to the eighth guide point P 8 , in a direction getting closer to the door side wall 32 and the door front wall 31.

[0126] In some embodiments, the guide trajectory line S starts from the starting guide point P 0 , and firstly extends successively through the first guide point P 1 , the second guide point P 2 , and the third guide point P 3 , and 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 it extends from the fourth guide point P 4 successively through the fifth guide point P 5 , the sixth guide point P 6 , the seventh guide point P 7 , and to the eighth guide point P 8 , along a curved line in a direction getting closer to the door side wall 32 and the door front wall 31.

[0127] In some embodiments of the present disclosure, the guide trajectory line S includes a first guide line.

[0128] For example, the first guide line may be a straight line or the like.

[0129] In some embodiments of the present disclosure, the second guide line is connected to one end of the first guide line close to the door side wall 32.

[0130] For example, the second guide line may be a curved line or the like.

[0131] In some embodiments of the present disclosure, the second guide point P 2 is a connection point between the first guide line and the second guide line.

[0132] The second guide point P 2 is the end of the first guide line that is close to the door side wall 32. Correspondingly, the second guide point P 2 is the end of the second guide line that is away from the door side wall 32.

[0133] 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.

[0134] Hereinafter, when the movement of the first shaft 41 relative to the guide portion 50 and the movement of the second shaft 42 relative to the direction-guiding portion 60 are described, they are described as being applied to the embodiments using examples in which the guide trajectory line S includes a first guide line in a shape of straight line and a second guide line in a shape of curved line.

[0135] In some embodiments of the present disclosure, 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.

[0136] In some embodiments of the present disclosure, on the direction-guiding trajectory line K, there are successively arranged 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 gradually closer to the door side wall 32 in this order.

[0137] In some embodiments of the present disclosure, 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.

[0138] Among them, configurable, the distance of the sixth direction-guiding point Q 6 from the door front wall 31 may be the largest.

[0139] In some embodiments, the direction-guiding trajectory line K extends from the starting direction-guiding point Q 0 at its end away from the door side wall 32 to the eighth direction-guiding point Q 8 at its end close to the door side wall 32.

[0140] In some embodiments, the direction-guiding trajectory line K starts from the starting direction-guiding point Q 0 , firstly extends successively 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 to the sixth direction-guiding point Q 6 , in a direction getting away from the door front wall 31 and getting closer to the door side wall 32, and then it extends from the sixth direction-guiding point Q 6 to the eighth direction-guiding point Q 8 , in a direction getting closer to the door side wall 32 and the door front wall 31.

[0141] In some embodiments, the direction-guiding trajectory line K starts from the starting direction-guiding point Q 0 , firstly extends successively 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 to the sixth direction-guiding point Q 6 , along a curved line in a direction getting away from the door side wall 32 and getting closer to the door front wall 31, 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.

[0142] In some embodiments of the present disclosure, referring to FIG. 5, 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 . 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 .

[0143] 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 ). Of course, 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.

[0144] In some embodiments of the present disclosure, the first included angle σ 1 belongs to any value of 85° to 90°.

[0145] In some embodiments of the present disclosure, 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°.

[0146] In some embodiments of the present disclosure, 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 . Where the fourth included angle σ 4 belongs to any value of 0° to 5°.

[0147] In some embodiments of the present disclosure, 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°.

[0148] Same as above, the range of the included angle between the line and the plane is from 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 the side close to the door rear wall 33 and the door side wall 32. Of course, 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 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.

[0149] In some embodiments of the present disclosure, the first included angle σ 1 between the straight line P 4 Q 6 and the door front wall 31 and the included angle between the straight line P 4 Q 6 and the door side wall 32 each belong to an included angle between a line and a plane, while the range of the included angle between a line and a plane is from 0° to 90°.

[0150] In the above, the limitations of the first included angle σ 1 and the fourth included angle σ 4 further define the relative positions of the guide trajectory line S and the direction-guiding trajectory line K, which gradually increase and then decrease in distance from the door front wall 31. This, in turn, defines the movement trends relative to the first body side wall and the access opening for the first shaft 41 relative to the guide portion 50 and the second shaft 42 relative to the direction-guiding portion 60 during the opening process of the door body 30. It ensures that the first shaft 41 and the second shaft 42 have a tendency to approach the first body side wall and the access opening throughout the process, so that the door body 30 has a tendency to move closer to the second body side wall and move away from the plane where the access opening is located throughout the process, thereby enabling the door body 30 to move inward and forward throughout the process.

[0151] In some embodiments of the present disclosure, 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.

[0152] In some embodiments of the present disclosure, 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 closed.

[0153] In some embodiments of the present disclosure, 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 .

[0154] In some embodiments of the present disclosure, 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 closed.

[0155] In some embodiments of the present disclosure, 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 .

[0156] In some embodiments of the present disclosure, when designing the second hinge member, in order to avoid excessive movement of the door body 30 toward the refrigerator body 10 due to excessive force applied 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 opening 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. When a space is reserved at either end of two ends of the guide portion 50 or the direction-guiding portion 60, 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 closed or 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.

[0157] In some embodiments of the present disclosure, the starting guide point P 0 is located at the side of the starting direction-guiding point Q 0 close to the door rear wall 33 and the door side wall 32.

[0158] In some embodiments of the present disclosure, the eighth guide point P 8 is located at the side of the starting direction-guiding point Q 0 close to the door front wall 31 and the door side wall 32.

[0159] In some embodiments of the present disclosure, 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.

[0160] In some embodiments of the present disclosure, as shown in 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 E 1 , 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 .

[0161] Where the first lateral distance E 1 belongs to any value of 25 mm to 30 mm.

[0162] In some embodiments of the present disclosure, the first lateral distance E 1 belongs to any value of 25 mm to 28 mm or any value of 28 mm to 30 mm.

[0163] The second lateral distance E 2 belongs to any value of 2 mm to 4 mm.

[0164] In some embodiments of the present disclosure, the second lateral distance E 2 belongs to any value of 4 mm to 6 mm.

[0165] In some embodiments of the present disclosure, the second lateral distance E 2 belongs to any value of 2 mm to 6 mm.

[0166] In some embodiments of the present disclosure, 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 .

[0167] Where the first longitudinal distance D 1 belongs to any value of 10 mm to 14 mm.

[0168] In some embodiments of the present disclosure, the first longitudinal distance D 1 belongs to any value of 8 mm to 10 mm.

[0169] In some embodiments of the present disclosure, the first longitudinal distance D 1 belongs to any value of 14 mm to 16 mm.

[0170] In some embodiments of the present disclosure, the first longitudinal distance D 1 belongs to any value of 8 mm to 16 mm.

[0171] In some embodiments of the present disclosure, the second longitudinal distance D 2 belongs to any value of 3 mm to 4 mm.

[0172] In some embodiments of the present disclosure, the second longitudinal distance D 2 belongs to any value of 4 mm to 6 mm.

[0173] In some embodiments of the present disclosure, the second longitudinal distance D 2 belongs to any value of 3 mm to 6 mm.

[0174] In some embodiments of the present disclosure, the third longitudinal distance D 3 belongs to any value of 0 mm to 1 mm.

[0175] In some embodiments of the present disclosure, the third longitudinal distance D 3 belongs to any value of 1 mm to 2 mm.

[0176] In some embodiments of the present disclosure, the third longitudinal distance D 3 belongs to any value of 0 mm to 2 mm.

[0177] In some embodiments of the present disclosure, 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 (or 11 mm to 22 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 (or 21 mm to 32 mm). As a result of the above arrangement, the arrangement of the guide portion 50 and the direction-guiding portion 60 is compact, the occupied area is reduced, and 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 also reduced, so that the occupation of the thickness dimension of the door body 30 by the guide portion 50 and the direction-guiding portion 60 is reduced, so that the same arrangement can be applied even when the door body 30 is thinned.

[0178] In some embodiments of the present disclosure, as shown in FIG. 6, when the door body 30 is closed, the distance (gap) between the door front wall 31 and the housing cabinet 100 is denoted as L 1 .

[0179] In some embodiments of the present disclosure, L 1 belongs to any value of 2 mm to 5 mm.

[0180] In some embodiments of the present disclosure, L 1 is less than or equal to 3 mm.

[0181] In some embodiments of the present disclosure, the thickness of the door body 30 in a direction perpendicular to the door front wall 31 is π.

[0182] The thickness π of the door body 30 is a distance between the door front wall 31 and the door rear wall 33 in a direction perpendicular to the door front wall 31.

[0183] As a method of measuring the thickness of the door body 30, a measuring ruler is placed on the door side wall 32 in a manner that the measuring ruler is perpendicular to the door front wall 31. The thickness of the door body 20 is the distance between the intersection line between the extending direction of the door front wall 31 and the measuring ruler and the intersection line between the extending direction of the door rear wall 33 and the measuring ruler.

[0184] In some embodiments of the present disclosure, L 1 :π belongs to any value of 0.07 to 0.11. The relationship between the thickness of the door body 30 and the distance between the door front wall 31 and the inner wall of the housing cabinet 100 is defined as above, so that the door body 30 can be smoothly opened under the setting 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 of the door body 30 collides with the inner wall of the housing cabinet 100 so that the door body 30 cannot be opened is avoided.

[0185] In some embodiments of the present disclosure, when the refrigerator is placed in the housing cabinet 100, the maximum angle G max (= G 8 ) to which the door body 30 can be opened is greater than or equal to 115°.

[0186] Referring to FIG. 13, when the door body 30 is opened to 90°, the door front wall 31 is located at the side of the first body side wall close to the second body side wall. The distance between the door front wall 31 and the first body side wall is denoted as L 3 .

[0187] In some embodiments of the present disclosure, L 3 belongs to any value of 0 mm to 5 mm.

[0188] In some embodiments of the present disclosure, π:L 3 belongs to any value of 0.07 to 0.25.

[0189] In some embodiments of the present disclosure, referring to FIG. 6, a plane located on the side of the first body side wall away from the second body side wall and having a distance of α' from the first body side wall (i.e., the reference plane M 0 ) is denoted as a first reference plane M 1 (referring to FIG. 15), and a plane that passes through the first side edge W and is parallel to the plane where the access opening is located is denoted as a fourth reference plane M 4 . The first reference plane M 1 and the fourth reference plane M 4 intersect with each other at the limit edge line L x .

[0190] When the door body 30 closes the access opening, the door front wall 31 is flushed with the fourth reference plane M 4 .

[0191] When the door body 30 is opened to the eighth angle G 8 , the door body 30 is in contact with the limit edge line L x . Where, G 8 is greater than or equal to 115°.

[0192] When the door body 30 is opened to 90°, L 3 belongs to any value of 0 mm to 5 mm.

[0193] That is, when the refrigerator is placed in the housing cabinet 100, the maximum angle G max (= G 8 ) to which the door body 30 can be opened is greater than or equal to 115°. Further, when the door body 30 is opened to 90°, the distance between the door front wall 31 and the first body side wall is 5 mm or less.

[0194] It can be understood that in order to reduce the shielding of the storage space (access opening) by the door body 30, the thinner the thickness of the door body 30 is, the better. For the built-in refrigerator, when the door body 30 is opened to 90°, the smaller the distance between the door front wall 31 and the first body side wall of the refrigerator body 10 is, the better, so as to bring the door body 30 closer to the housing cabinet 100.

[0195] However, since the guide portion 50 and the direction-guiding portion 60 are provided on the door body 30, the small thickness of the door body 30 is unfavorable to the arrangement of the guide portion 50 and the direction-guiding portion 60.

[0196] In addition, if the distance between the door front wall 31 and the first body side wall of the refrigerator body 10 is small when the door is opened to 90°, the opening angle of the door body 30 of the refrigerator within the housing cabinet 100 is likely to be limited, and it is inconvenient for the user to take out or place in articles.

[0197] The above limitation of the maximum opening angle of the door body 30 and the limitation of the distance between the door front wall 31 and the first body side wall of the refrigerator body 10 when the door body 30 is opened to 90° effectively solve the contradiction among the three aspects including the thickness of the door body 30, the drawing of the drawer placed in the storage compartment when the door is opened to 90°, and the arrangement design of the guide portion 50 and the direction-guiding portion 60, while taking into account the requirements of the above three aspects.

[0198] In some embodiments of the present disclosure, the refrigerator body 10 is placed in the housing cabinet 100, and the maximum angle G max to which the door body 30 can be opened belongs to 115° to 125°.

[0199] In some embodiments of the present disclosure, when the door body 30 is closed, the door front wall 31 is flush with the end surface of the opening end of the housing cabinet 100.

[0200] It is to be noted that, the above flush includes a case where the distance between the door front wall 31 and the end surface of the opening end of the housing cabinet 100 is less than 2 mm.

[0201] In some embodiments of the present disclosure, as shown in FIG. 6, the distance α' between the first 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 closed, that is, α' > L 1 . When the above door body 30 is closed, the door body 30 can effectively shield the refrigerator body 10 of the refrigerator, and prevent the side wall of the refrigerator body 10 of the refrigerator from bulging due to foaming and affecting the aesthetic appearance.

[0202] In some embodiments of the present disclosure, referring to FIG. 3, on an end of the guide portion 50 (the guide groove) away from the door side-wall 32, a point having a minimum distance from the door front-wall 31 is denoted as a first guide boundary point Z 1 , on an end of the guide portion 50 (the guide groove) close to the door side-wall 32, a point having a minimum distance from the door front-wall 31 is denoted as a second guide boundary point Z 2 , and on the guide portion 50 (the guide groove), a point having a maximum distance from the door front-wall 31 is denoted as a third guide boundary point Z 3 .

[0203] Where the first guide boundary point Z 1 , the second guide boundary point Z 2 , and the third guide boundary point Z 3 are all located on the wall surface of the guide portion 50 (guide groove) that is configured for cooperating with the first shaft 41. For example, when the guide portion 50 is a guide groove, the above three guide boundary points are all located on the inner wall of the guide groove.

[0204] In some embodiments of the present disclosure, on an end of the direction-guiding portion 60 (the direction-guiding groove) away from the door side-wall 32, a point having a minimum distance from the door front-wall 31 is denoted as a first direction-guiding boundary point H 1 , on an end of the direction-guiding portion 60 (the direction-guiding groove) close to the door side-wall 32, a point having a minimum distance from the door front-wall 31 is denoted as a second guide boundary point H 2 , and on the direction-guiding portion 60 (the direction-guiding groove), a point having a maximum distance from the door front-wall 31 is denoted as a third guide boundary point H 3 .

[0205] The first direction-guiding boundary point H 1 , the second direction-guiding boundary point H 2 , and the third direction-guiding boundary point H 3 are all located on the wall surface of the direction-guiding portion 60 (direction-guiding groove) that is configured for cooperating with the second shaft 42. For example, when the direction-guiding portion 60 is a direction-guiding groove, the above three direction-guiding boundary points are all located on the inner wall of the direction-guiding groove.

[0206] In some embodiments of the present disclosure, the first guide boundary point Z 1 is located at the side of the starting guide point P 0 close to the door front wall 31.

[0207] In some embodiments of the present disclosure, the straight line Z 1 P 0 where the first guide boundary point Z 1 and the starting guide point P 0 are located is perpendicular to the door front wall 31.

[0208] In some embodiments of the present disclosure, the distance between the first guide boundary point Z 1 and the starting positioning point P 0 is equal to the radius of the first shaft 41.

[0209] In some embodiments of the present disclosure, the second guide boundary point Z 2 is located at the side of the eighth guide point P 8 close to the door front wall 31.

[0210] In some embodiments of the present disclosure, the straight line Z 2 P 8 where the second guide boundary point Z 2 and the eighth guide point P 8 are located is perpendicular to the door front wall 31.

[0211] In some embodiments of the present disclosure, the distance between the second guide boundary point Z 2 and the eighth positioning point P 8 is equal to the radius of the first shaft 41.

[0212] In some embodiments of the present disclosure, the third guide boundary point Z 3 is located at the side of the fourth guide point P 4 away from the door front wall 31.

[0213] In some embodiments of the present disclosure, the straight line Z 2 P 4 where the third guide boundary point Z 3 and the fourth guide point P 4 are located is perpendicular to the door front wall 31.

[0214] In some embodiments of the present disclosure, the distance between the third guide boundary point Z 3 and the fourth guide point P 4 is equal to the radius of the first shaft 41.

[0215] In some embodiments of the present disclosure, the first direction-guiding boundary point H 1 is located at the side of the starting direction-guiding point Q 0 close to the door front wall 31.

[0216] In some embodiments of the present disclosure, the straight line H 1 Q 0 where the first direction-guiding boundary point H 1 and the starting direction-guiding point Q 0 are located is perpendicular to the door front wall 31.

[0217] In some embodiments of the present disclosure, the distance between the first direction-guiding boundary point H 1 and starting direction-guiding point Q 0 is equal to the radius of the second shaft 42.

[0218] In some embodiments of the present disclosure, the second direction-guiding boundary point H 2 is located at the side of the eighth direction-guiding point Q 8 close to the door front wall 31.

[0219] In some embodiments of the present disclosure, the straight line H 2 Q 8 where the second direction-guiding boundary point H 2 and the eighth direction-guiding point Q 8 are located is perpendicular to the door front wall 31.

[0220] In some embodiments of the present disclosure, the distance between the second direction-guiding boundary point H 2 and eighth direction-guiding point Q 8 is equal to the radius of the second shaft 42.

[0221] In some embodiments of the present disclosure, the third direction-guiding boundary point H 3 is located at the side of the sixth direction-guiding point Q 6 away from the door front wall 31.

[0222] In some embodiments of the present disclosure, the straight line H 3 Q 6 where the third direction-guiding boundary point H 3 and the sixth direction-guiding point Q 6 are located is perpendicular to the door front wall 31.

[0223] In some embodiments of the present disclosure, the distance between the third direction-guiding boundary point H 3 and sixth direction-guiding point Q 6 is equal to the radius of the second shaft 42.

[0224] It should be noted that, the "equal" in the above descriptions that the distance between the first guide boundary point Z 1 and the starting positioning point P 0 is equal to the radius of the first shaft 41, the distance between the second guide boundary point Z 2 and the eighth positioning point P 8 is equal to the radius of the first shaft 41, the distance between the third guide boundary point Z 3 and the fourth guide point P 4 is equal to the radius of the first shaft 41, the distance between the first direction-guiding boundary point H 1 and the starting direction-guiding point Q 0 is equal to the radius of the second shaft 42, the distance between the second direction-guiding boundary point H 2 and the eighth direction-guiding point Q 8 is equal to the radius of the second shaft 42, and the distance between the third direction-guiding boundary point H 3 and the sixth direction-guiding point Q 4 is equal to the radius of the second shaft 42, includes deviations caused by processing errors or the like.

[0225] Further, the above "equal to" includes a case where the difference between the two equal objects belongs to any value of 0 mm to 2 mm.

[0226] It should be noted that, under the premise that the door front wall 31 and the door side wall 32 are perpendicular to each other, the direction perpendicular to the door front wall 31 is the same as the direction parallel to the door side wall 32, that is, the direction of the Y-axis as shown in FIG. 3. The direction perpendicular to the door side wall 32 is the same as the direction parallel to the door front wall 31, that is, the direction of the X-axis as shown in FIG. 3.

[0227] However, when the door front wall 31 and the door side wall 32 are not arranged perpendicularly, the direction perpendicular to the door front wall 31 only indicates the distance in the direction perpendicular to and with respect to the door front wall 31, and is not necessarily related to the door side wall 32. Similarly, a direction perpendicular to the door side wall 32 only indicates a distance in the direction perpendicular to and with respect to the door side wall 32, and is not necessarily related to the door front wall 31.

[0228] In a direction perpendicular to the door side wall 32, the distance between the first guide boundary point Z 1 and the third guide boundary point Z 3 is denoted as the first guide side spacing E' P1 , the distance between the third guide boundary point Z 3 and the second guide boundary point Z 2 is denoted as the second guide side spacing E' P2 .

[0229] In some embodiments of the present disclosure, E' P1 :E' P2 belongs to any value of 1.3 to 2.

[0230] In some embodiments of the present disclosure, E' P1 :E' P2 belongs to any value of 2 to 3.

[0231] In some embodiments of the present disclosure, E' P1 :E' P2 belongs to any value of 1.3 to 3.

[0232] The above E' P1 :E' P2 is defined within the above range, which defines the relationship of the lateral dimension of the guide portion 50 in the direction perpendicular to the door side wall 32, so as to define the movement of the first shaft 41 relative to the guide portion 50 during the opening of the door body 30. In the case where the diameters of the first shaft 41 and the second shaft 42 are determined, E' P1 : E' P2 defines the extension trend of the guide portion 50, thereby affecting the setting of the extension trend of the direction-guiding portion 60, so as to ensure that the arrangement of the guide portion 50 and the direction-guiding portion 60 is compact, which is beneficial to reduce the thickness of the door body 30. In addition, when the door body 30 is opened to the maximum angle, the geometric center of the door body 30 can fall between the central axis of the first shaft 41 and the central axis of the second shaft 42, thereby increasing the stability when the door body 30 is opened to the maximum angle.

[0233] The above E' P1 : E' P2 is defined within the above range, so that the door body 30 moves inward and forward in the beginning stage of the opening of the door body 30, so as to ensure that the first shaft 41 can move to the fourth guide point P 4 (turning point) after the first shaft 41 is displaced nearly half of the rotational movement, so that after the door body 30 is moved to a position where its first side edge W reaches the minimum displacement from the housing cabinet 100, the door body 30 rotates inward (rotates in a direction getting closer to the second body side wall) as the opening angle of the door body 30 increases, ensuring that the door body would not touch the housing cabinet 100, and reducing the restriction of the opening angle of the door body 30 by the housing cabinet 100.

[0234] In some embodiments of the present disclosure, E' P1 belongs to any value of 5 mm to 7 mm.

[0235] In some embodiments of the present disclosure, E' P1 belongs to any value of 7 mm to 8 mm.

[0236] In some embodiments of the present disclosure, E' P1 belongs to any value of 5 mm to 8 mm.

[0237] In some embodiments of the present disclosure, E' P2 belongs to any value of 3 mm to 4 mm.

[0238] In some embodiments of the present disclosure, E' P2 belongs to any value of 4 mm to 5 mm.

[0239] In some embodiments of the present disclosure, E' P2 belongs to any value of 5 mm to 6 mm.

[0240] In some embodiments of the present disclosure, E' P2 belongs to any value of 3 mm to 6 mm.

[0241] In some embodiments of the present disclosure, the distance between the first guide boundary point Z 1 and the door side wall 32 is referred to as the first guide side distance D' P1 , the distance between the second guide boundary point Z 2 and the door side wall 32 is referred to as the second guide side distance D' P2 , and the distance between the third guide boundary point Z 3 and the door side wall 32 is referred to as the third guide side distance D' P3 .

[0242] In some embodiments of the present disclosure, D' P1 belongs to any value of 18 mm to 22 mm.

[0243] In some embodiments of the present disclosure, D' P1 belongs to any value of 22 mm to 26 mm.

[0244] In some embodiments of the present disclosure, D' P1 belongs to any value of 18 mm to 26 mm.

[0245] In some embodiments of the present disclosure, D' P2 belongs to any value of 6 mm to 12 mm.

[0246] In some embodiments of the present disclosure, D' P3 belongs to any value of 12 mm to 15 mm.

[0247] In some embodiments of the present disclosure, D' P3 belongs to any value of 15 mm to 17 mm.

[0248] In some embodiments of the present disclosure, D' P3 belongs to any value of 17 mm to 19 mm.

[0249] In some embodiments of the present disclosure, D' P3 belongs to any value of 12 mm to 19 mm.

[0250] In the above, E' P1 = D' P1 - D' P3 , and E' P2 = D' P3 - D' P2 .

[0251] The straight line where the first guide boundary point Z 1 and the third guide boundary point Z 3 are located is denoted as a straight line Z 1 Z 3 ; and the straight line where the third guide boundary point Z 3 and the second guide boundary point Z 2 are located is denoted as a straight line Z 3 Z 2 .

[0252] The included angle between the straight line Z 1 Z 3 and the door side wall 32 is denoted as a first guide side angle Ω' P1 , and the included angle between the straight line Z 3 Z 2 and the door side wall 32 is denoted as a second guide side angle Ω' P2 .

[0253] In some embodiments of the present disclosure, Ω' P1 > Ω' P2 .

[0254] In some embodiments of the present disclosure, Ω' P1 : Ω' P2 belongs to any value of 1.8 to 2.1.

[0255] In some embodiments of the present disclosure, Ω' P1 : Ω' P2 belongs to any value of 2.1 to 2.5.

[0256] In some embodiments of the present disclosure, Ω' P1 : Ω' P2 belongs to any value of 1.8 to 2.5.

[0257] The above limitations of the relative relationship between the first guide side angle Ω' P1 and the second guide side angle Ω' P2 together decides the movement efficiency during the opening of the door body 30, so that the trajectory changing movement is more efficient and stable.

[0258] In some embodiments of the present disclosure, Ω' P1 belongs to any value of 41° to 44°.

[0259] In some embodiments of the present disclosure, Ω' P1 belongs to any value of 44° to 48°.

[0260] In some embodiments of the present disclosure, Ω' P1 belongs to any value of 33° to 48°.

[0261] The above limitations of the ranges of the first guide side angle Ω' P1 effectively ensures that the first side edge W can move toward the housing cabinet 100 gently enough during the opening of the door body 30, so as to avoid collision between the first side edge W and the housing cabinet 100, and to ensure smoothness and stability during the opening of the door body 30.

[0262] On the other hand, the included angle between the straight line Z 1 Z 3 and the door side wall 32, the range of the first guide side angle Ω' P1 , and the position of the first shaft 41 (the position of Z 1 relative to the door body 30) when the door body 30 is closed directly affects the degree of squeezing on the door seal strip when opening the door body 30. The above limitations of the ranges reduce the squeezing on the door seal strip.

[0263] In some embodiments of the present disclosure, Ω' P2 belongs to any value of 22° to 24°.

[0264] In some embodiments of the present disclosure, Ω' P2 belongs to any value of 24° to 26°.

[0265] In some embodiments of the present disclosure, Ω' P2 belongs to any value of 26° to 28°.

[0266] In some embodiments of the present disclosure, Ω' P2 belongs to any value of 22° to 28°.

[0267] The above limitations of the ranges of the second guide side angles Ω' P2 ensures that the first side edge W can quickly rotate inward in the last stage of the opening of the door body 30, so as to reduce the restriction of the opening angle of the door body 30 by the housing cabinet 100.

[0268] On the other hand, the included angle between the straight line Z 3 Z 2 and the door side wall 32, the range of the second guide side angle Ω' P2 , and the position of the first shaft 41 (the position of Z 2 relative to the door body 30) when the door body 30 is opened to the maximum angle directly affects the maximum angle to which the door body 30 can be opened. The above limitations of the ranges increase the angle to which the door body 30 can be opened when in the built-in state, and facilitates the user to take out or place in items.

[0269] The included angle between the straight line Z 1 Z 3 and the door front wall 31 is denoted as a first guide front angle Ω P1 , and the included angle between the straight line Z 3 Z 2 and the door front wall 31 is denoted as a second guide front angle Ω P2 .

[0270] In some embodiments of the present disclosure, Ω P1 < Ω P2 .

[0271] The above limitations of the relative relationship between the first guide front angle Ω P1 and the second guide front angle Ω P2 further improves the movement efficiency during the opening of the door body 30, so that the trajectory changing movement is more efficient and stable.

[0272] In some embodiments of the present disclosure, Ω P1 belongs to any value of 44° to 46°.

[0273] In some embodiments of the present disclosure, Ω P1 belongs to any value of 46° to 48°.

[0274] In some embodiments of the present disclosure, Ω P1 belongs to any value of 48° to 50°.

[0275] In some embodiments of the present disclosure, Ω P1 belongs to any value of 50° to 52°.

[0276] In some embodiments of the present disclosure, Ω P1 belongs to any value of 45° to 52°.

[0277] The above limitations of the ranges of the first guide front angle Ω P1 effectively ensures that the first side edge W can move toward the housing cabinet 100 gently enough during the opening of the door body 30, so as to avoid collision between the first side edge W and the housing cabinet 100, and to ensure smoothness and stability during the opening of the door body 30.

[0278] On the other hand, the included angle between the straight line Z 1 Z 3 and the door front wall 31, the range of the first guide front angle Ω P1 , and the position of the first shaft 41 (the position of Z 1 relative to the door body 30) when the door body 30 is closed directly affects the degree of squeezing on the door seal strip when opening the door body 30. The above limitations of the ranges reduce the squeezing on the door seal strip.

[0279] On the other hand, the included angle between the straight line Z 3 Z 2 and the door front wall 31, the range of the second guide front angle Ω P2 , and the position of the first shaft 41 (the position of Z 2 relative to the door body 30) when the door body 30 is opened to the maximum angle directly affects the maximum angle to which the door body 30 can be opened. The above limitations of the ranges increase the angle to which the door body 30 can be opened when in the built-in state, and facilitates the user to take out or place in items.

[0280] In some embodiments of the present disclosure, the included angle ∠Z 1 Z 3 Z 2 between the straight line Z 1 Z 3 and the straight line Z 3 Z 2 is denoted as a guide angle Ω P , and the guide angle Ω P belongs to any value of 61° to 63°.

[0281] In some embodiments of the present disclosure, the guide angle Ω P belongs to any value of 62° to 66°.

[0282] In some embodiments of the present disclosure, the guide angle Ω P belongs to any value of 66° to 70°.

[0283] In some embodiments of the present disclosure, the guide angle Ω P belongs to any value of 62° to 70°.

[0284] The above guide angle Ω P is defined within the above range, so that the first side edge W of the door body 30 can be quickly rotated inward when the distance of the first side edge W from the housing cabinet 100 is minimized, thereby reducing the restriction of the opening angle of the door body 30 by the housing cabinet 100.

[0285] In some embodiments of the present disclosure, the length of the line segment Z 1 Z 3 is denoted as |Z 1 Z 3 |, and |Z 1 Z 3 | belongs to any value of 8 mm to 10 mm.

[0286] In some embodiments of the present disclosure, |Z 1 Z 3 | belongs to any value of 10 mm to 13 mm.

[0287] In some embodiments of the present disclosure, |Z 1 Z 3 | belongs to any value of 13 mm to 15 mm.

[0288] In some embodiments of the present disclosure, |Z 1 Z 3 | belongs to any value of 15 mm to 15.5 mm.

[0289] In some embodiments of the present disclosure, |Z 1 Z 3 | belongs to any value of 8 mm to 15.5 mm.

[0290] The above limitations of | Z 1 Z 3 | in combination with the limitations of the first guide front angle Ω P1 or the first guide side angle Ω' P1 effectively defines the inward and forward movement of the door body 30 in the beginning stage, so that the first side edge W of the door body 30 can be avoided from colliding with the housing cabinet 100.

[0291] In some embodiments of the present disclosure, the length of the line segment Z 3 Z 2 is denoted as |Z 3 Z 2 |, and |Z 3 Z 2 | belongs to any value of 10 mm to 12 mm.

[0292] In some embodiments of the present disclosure, |Z 3 Z 2 | belongs to any value of 12 mm to 13.6 mm.

[0293] In some embodiments of the present disclosure, |Z 3 Z 2 | belongs to any value of 10 mm to 13.6 mm.

[0294] The above limitation of |Z 3 Z 2 | in combination with the limitations of the second guide front angle Ω P2 or the second guide side angle Ω' P2 effectively defines that the first side edge W can quickly rotate in the latter stage of the door body 30, so as to reduce the restriction of the opening angle of the door body 30 by the housing cabinet 100.

[0295] In some embodiments of the present disclosure, the first guide boundary point Z 1 , the third guide boundary point Z 3 , and the second guide boundary point Z 2 are sequentially located closer to the door side wall 32. That is, the distances of the first guide boundary point Z 1 , the third guide boundary point Z 3 , and the second guide boundary point Z 2 from the door side wall 32 decrease sequentially. That is, in a direction parallel to the door front wall 31 or a direction perpendicular to the door side wall 32, the third guide boundary point Z 3 is located between the first guide boundary point Z 1 and the second guide boundary point Z 2 .

[0296] The distance between the first guide boundary point Z 1 and the door front wall 31 is denoted as a first guide front distance D P1 , the distance between the second guide boundary point Z 2 and the door front wall 31 is denoted as a second guide front distance D P2 , and the distance between the third guide boundary point Z 3 and the door front wall 31 is denoted as a third guide front distance D P3 .

[0297] In some embodiments of the present disclosure, D P2 belongs to any value of 6 mm to 9 mm.

[0298] In some embodiments of the present disclosure, D P2 belongs to any value of 9 mm to 12 mm.

[0299] In some embodiments of the present disclosure, D P2 belongs to any value of 6 mm to 12 mm.

[0300] The above D P2 is defined within the above ranges, which can ensure that the main part of the first shaft 41 is as close as possible to the door front wall 31 during the movement of the first shaft 41, so as to increase the supporting action of the hinge plate 40 on the door body 30 and prevent the door body 30 from moving downward and deforming under the action of its own gravity.

[0301] In some embodiments of the present disclosure, D P3 belongs to any value of 18 mm to 22 mm.

[0302] In some embodiments of the present disclosure, D P3 belongs to any value of 22 mm to 24 mm.

[0303] In some embodiments of the present disclosure, D P3 belongs to any value of 24 mm to 28 mm.

[0304] In some embodiments of the present disclosure, D P3 belongs to any value of 28 mm to 32 mm.

[0305] In some embodiments of the present disclosure, D P3 belongs to any value of 18 mm to 32 mm.

[0306] The above D P3 is defined within the above ranges, which can ensure that when the door body 30 moves in a direction getting away from the housing cabinet 100 sufficiently gently, the first shaft 41 is as close as possible to the door front wall 31, so as to increase the supporting action of the hinge plate 40 on the door body 30 and prevent the door body 30 from moving downward and deforming under the action of its own gravity.

[0307] In some embodiments of the present disclosure, |D P1 -D P2 | belongs to any value of 2 mm to 6 mm.

[0308] |D P1 -D P2 | is the absolute value of the difference between the distance (which is denoted as a first guide front distance D P1 ) of the first guide boundary point Z 1 from the door front wall 31 and the distance (which is denoted as a second guide front distance D P2 ) of the second guide boundary point Z 2 from the door front wall 31.

[0309] In some embodiments of the present disclosure, the first guide boundary point Z 1 is located at the side of the second guide boundary point Z 2 away from the door front wall 31. That is, D P1 > D P2 .

[0310] In some embodiments of the present disclosure, the first guide boundary point Z 1 is located at the side of the second guide boundary point Z 2 close to the door front wall 31. That is, D P1 < D P2 .

[0311] The above |D P1 -D P2 | is defined within the above ranges, so as to ensure that the displacement of the first shaft 41 at the initial position (one end of the guide portion 50 away from the door side wall 32) and the end position (one end of the direction-guiding portion 60 close to the door side wall 32) in the direction getting away from the door front wall 31 is sufficiently small, so that the variation range of the displacement of the second shaft 42 is reduced, which is conducive to achieve the ultra-thin door body.

[0312] It should be noted that, if |D P1 -D P2 | is less than 2 mm, then it affects the maximum angle to which the door body 30 can be opened when the refrigerator is in the built-in state. If |D P1 -D P2 | is too large, the design arrangement of the guide portion 50 and the direction-guiding portion 60 will be affected. If the distance between the end of the guide portion 50 or the direction-guiding portion 60 and the door front wall 31 is too small, the strength of the door body 30 will be reduced.

[0313] In some embodiments of the present disclosure, D P3 - D P2 belongs to any value of 8 mm to 10 mm.

[0314] In some embodiments of the present disclosure, D P3 - D P2 belongs to any value of 10 mm to 14 mm.

[0315] In some embodiments of the present disclosure, D P3 - D P2 belongs to any value of 14 mm to 18 mm.

[0316] In some embodiments of the present disclosure, D P3 - D P2 belongs to any value of 8 mm to 18 mm.

[0317] The above D P3 -D P2 is defined within the above ranges, which can ensure that the door body 30 can quickly rotate to the side away from the housing cabinet 100 during the opening of the door body 30.

[0318] In some embodiments of the present disclosure, the second guide boundary point Z 2 is located at the side of the first guide boundary point Z 1 close to the door front wall 31 or the door rear wall 33. The third guide boundary point Z 3 is located at the side of the second guide boundary point Z 2 close to the door rear wall 33.

[0319] In some embodiments of the present disclosure, in a direction perpendicular to the door front wall 31, the distance between the first guide boundary point Z 1 and the third guide boundary point Z 3 is denoted as a first guide front spacing E P1 , and the distance between the third guide boundary point Z 3 and the second guide boundary point Z 2 is denoted as a second guide front spacing E P2 .

[0320] In some embodiments of the present disclosure, E P1 belongs to any value of 4 mm to 8 mm.

[0321] In some embodiments of the present disclosure, E P1 belongs to any value of 7 mm to 10 mm.

[0322] In some embodiments of the present disclosure, E P1 belongs to any value of 10 mm to 13 mm.

[0323] In some embodiments of the present disclosure, E P1 belongs to any value of 4 mm to 13 mm.

[0324] In some embodiments of the present disclosure, in the above, E P1 = D P1 - D P3 .

[0325] The above E P1 = D P1 - D P3 is defined within the above ranges, which can ensure the gentleness in the movement of the door body 30 in the early stage of the opening of the door body 30.

[0326] It should be noted that, if E P1 = D P1 - D P3 is less than 4 mm, then it affects the maximum angle to which the door can be opened when the refrigerator is in the built-in state. If E P1 = D P1 - D P3 is too large, the design arrangement of the guide portion 50 and the direction-guiding portion 60 will be affected, resulting in that the guide portion 50 or the direction-guiding portion 60 will occupy a large dimension in the thickness direction of the door body 30, which is not conducive to thinning the door body 30.

[0327] In some embodiments of the present disclosure, in the above, E P2 = D P3 - D P2 . That is, the scope to which the E P2 belongs also applies to the scope to which the D P3 - D P2 belongs.

[0328] In some embodiments of the present disclosure, in a direction perpendicular to the door side wall 32, the distance between the first direction-guiding boundary point H 1 and the third direction-guiding boundary point H 3 is denoted as a first direction-guiding side spacing E' Q1 , and the distance between the third direction-guiding boundary point H 3 and the second direction-guiding boundary point H 2 is denoted as the second direction-guiding side spacing E' Q2 .

[0329] In some embodiments of the present disclosure, E' Q1 belongs to any value of 14 mm to 18 mm.

[0330] In some embodiments of the present disclosure, E' Q1 belongs to any value of 18 mm to 22 mm.

[0331] In some embodiments of the present disclosure, E' Q1 belongs to any value of 22 mm to 24 mm.

[0332] In some embodiments of the present disclosure, E' Q1 belongs to any value of 14 mm to 24 mm.

[0333] In some embodiments of the present disclosure, the distance between the first direction-guiding boundary point H 1 and the door side wall 32 is denoted as the first direction-guiding side distance D' Q1 , the distance between the second direction-guiding boundary point H 2 and the door side wall 32 is denoted as the second direction-guiding side distance D' Q2 , and the distance between the third direction-guiding boundary point H 3 and the door side wall 32 is denoted as the third direction-guiding side distance D' Q3 .

[0334] In some embodiments of the present disclosure, D' Q1 belongs to any value of 30 mm to 34 mm.

[0335] In some embodiments of the present disclosure, D' Q1 belongs to any value of 34 mm to 38 mm.

[0336] In some embodiments of the present disclosure, D' Q1 belongs to any value of 38 mm to 42 mm.

[0337] In some embodiments of the present disclosure, D' Q1 belongs to any value of 42 mm to 48 mm.

[0338] In some embodiments of the present disclosure, D' Q1 belongs to any value of 30 mm to 48 mm.

[0339] In some embodiments of the present disclosure, D' Q3 belongs to any value of 16.2 mm to 19 mm.

[0340] In some embodiments of the present disclosure, D' Q3 belongs to any value of 17 mm to 19 mm.

[0341] In the above, E' Q1 = D' Q1 - D' Q3 , and E' Q2 = D' Q3 - D' Q2 .

[0342] A straight line where the first direction-guiding boundary point H 1 and the third direction-guiding boundary point H 3 are located is denoted as a straight line H 1 H 3 . A straight line where the third direction-guiding boundary point H 3 and the second direction-guiding boundary point H 2 are located is denoted as a straight line H 3 H 2 .

[0343] In some embodiments of the present disclosure, the included angle between the straight line H 1 H 3 and the door side wall 32 is denoted as a first direction-guiding side angle Ω' Q1 , and the included angle between the straight line H 3 H 2 and the door side wall 32 is denoted as a second direction-guiding side angle Ω' Q2 . Where, Ω' Q1 > Ω' Q2 .

[0344] In some embodiments of the present disclosure, the included angle between the straight line H 1 H 3 and the door front wall 31 is denoted as a first direction-guiding front angle Ω Q1 , and the included angle between the straight line H 3 H 2 and the door front wall 31 is denoted as a second direction-guiding front angle Ω Q2 .

[0345] In some embodiments of the present disclosure, Ω Q1 < Ω Q2 .

[0346] In some embodiments of the present disclosure, Ω Q1 :Ω Q2 belongs to any value of 0.9 to 1.

[0347] In some embodiments of the present disclosure, Ω Q1 :Ω Q2 belongs to any value of 1 to 1.2.

[0348] In some embodiments of the present disclosure, Ω Q1 :Ω Q2 belongs to any value of 0.9 to 1.2.

[0349] The above relative relationship between the first direction-guiding front angle Ω Q1 and the second direction-guiding front angle Ω Q2 is limited within the above ranges, on the one hand, the dimension of the direction-guiding portion 60 in the direction perpendicular to the door front wall 31 is limited, so that the thickness dimension of the door body 30 occupied by the direction-guiding portion 60 is limited, which is conducive to thinning the door body.

[0350] On the other hand, the relative relationship between the first direction-guiding front angle Ω Q1 and the second direction-guiding front angle Ω Q2 decides the movement efficiency when opening the door body 30, so that the trajectory change movement is more efficient and stable.

[0351] In some embodiments of the present disclosure, Ω Q2 belongs to any value of 44° to 48°.

[0352] In some embodiments of the present disclosure, Ω Q2 belongs to any value of 48° to 52°.

[0353] In some embodiments of the present disclosure, Ω Q2 belongs to any value of 52° to 54°.

[0354] In some embodiments of the present disclosure, Ω Q2 belongs to any value of 44° to 54°.

[0355] The above second direction-guiding front angle Ω Q2 is limited within the above ranges, which ensures that the first side edge W can quickly rotate inward in the last stage of the opening of the door body 30, so as to reduce the restriction of the opening angle of the door body 30 by the housing cabinet 100.

[0356] In some embodiments of the present disclosure, the length of the line segment H 1 H 3 is denoted as |H 1 H 3 |, and |H 1 H 3 | belongs to any value of 24mm to 28mm.

[0357] In some embodiments of the present disclosure, |H 1 H 3 | belongs to any value of 28 mm to 31 mm.

[0358] In some embodiments of the present disclosure, |H 1 H 3 | belongs to any value of 31 mm to 35 mm.

[0359] In some embodiments of the present disclosure, |H 1 H 3 | belongs to any value of 24 mm to 35 mm.

[0360] In some embodiments of the present disclosure, the first direction-guiding boundary point H 1 , the third direction-guiding boundary point H 3 , and the second direction-guiding boundary point H 2 are sequentially located closer to the door side wall 32. That is, the distances of the first direction-guiding boundary point H 1 , the third direction-guiding boundary point H 3 , and the second direction-guiding boundary point H 2 from the door side wall 32 decrease sequentially. That is, in a direction parallel to the door front wall 31 or a direction perpendicular to the door side wall 32, the third direction-guiding boundary point H 3 is located between the first direction-guiding boundary point H 1 and the second direction-guiding boundary point H 2 .

[0361] The distance between the first direction-guiding boundary point H 1 and the door front wall 31 is denoted as the first direction-guiding front distance D Q1 , the distance between the second direction-guiding boundary point H 2 and the door front wall 31 is denoted as the second direction-guiding front distance D Q2 , and the distance between the third direction-guiding boundary point H 3 and the door front wall 31 is denoted as the third direction-guiding front distance D Q3 .

[0362] In some embodiments of the present disclosure, D Q2 belongs to any value of 18 mm to 22 mm.

[0363] In some embodiments of the present disclosure, D Q2 belongs to any value of 22 mm to 25 mm.

[0364] In some embodiments of the present disclosure, D Q2 belongs to any value of 25 mm to 29 mm.

[0365] In some embodiments of the present disclosure, D Q2 belongs to any value of 18 mm to 29 mm.

[0366] The above D Q2 is limited within the above ranges, which ensures that under the configurations of the guide portion 50 and the direction-guiding portion 60, the door body 30 can be opened to the maximum angle. Since the wall thickness between the end of the direction-guiding portion 60 close to the door side wall 32 and the guide portion 50 cannot be too small, the above limitations on D Q2 further ensures that when the second shaft 42 is moved to the end of the direction-guiding portion 60 close to the door side wall 32, there is a sufficient wall thickness between the end of the direction-guiding portion 60 close to the door side wall 32 and the guide portion 50, thereby ensuring the strengths of the guide portion 50 and the direction-guiding portion 60.

[0367] In some embodiments of the present disclosure, D Q3 belongs to any value of 27 mm to 31 mm.

[0368] In some embodiments of the present disclosure, D Q3 belongs to any value of 31 mm to 35 mm.

[0369] In some embodiments of the present disclosure, D Q3 belongs to any value of 27 mm to 35 mm.

[0370] The above D Q3 is limited within the above ranges, on the one hand, it ensures the dimensions of the guide portion 50 and the direction-guiding portion 60 in the direction perpendicular to the door front wall 31, which is conducive to further reducing the thickness of the door body 30. On the other hand, the movement trajectory of the second shaft 42 along the direction-guiding portion 60 is brought as close as possible to the movement trajectory of the first shaft 41 along the guide portion 50, which increases the arrangement compact between the guide portion 50 and the direction-guiding portion 60.

[0371] In some embodiments of the present disclosure, |D Q1 -D Q2 | belongs to any value of 8 mm to 10 mm.

[0372] In some embodiments of the present disclosure, |D Q1 -D Q2 | belongs to any value of 10 mm to 14 mm.

[0373] In some embodiments of the present disclosure, |D Q1 -D Q2 | belongs to any value of 14 mm to 16 mm.

[0374] In some embodiments of the present disclosure, |D Q1 -D Q2 | belongs to any value of 8 mm to 16 mm.

[0375] The above |D Q1 -D Q2 | is the absolute value of the difference between the distance (which is denoted as a first direction-guiding front distance D Q1 ) of the first direction-guiding boundary point H 1 from the door front wall 31 and the distance (which is denoted as a second direction-guiding front distance D Q2 ) of the second direction-guiding boundary point H 2 from the door front wall 31.

[0376] In some embodiments of the present disclosure, the first direction-guiding boundary point H 1 is located at the side of the second direction-guiding boundary point H 2 close to the door front wall 31. That is, D Q1 < D Q2 .

[0377] The above |D Q1 -D Q2 | is limited within the above ranges, so as to ensure smoother movements of the first shaft 41 relative to the guide portion 50 and the second shaft 42 relative to the direction-guiding portion 60, and avoid obvious sudden changes in speed, thereby increasing the stability of the opening of the door body 30.

[0378] In some embodiments of the present disclosure, in a direction perpendicular to the door front wall 31, the distance between the first direction-guiding boundary point H 1 and the third direction-guiding boundary point H 3 is denoted as a first direction-guiding front spacing E Q1 , and the distance between the third direction-guiding boundary point H 3 and the second direction-guiding boundary point H 2 is denoted as the second direction-guiding front spacing E Q2 .

[0379] In some embodiments of the present disclosure, E Q1 belongs to any value of 15 mm to 19 mm.

[0380] In some embodiments of the present disclosure, E Q1 belongs to any value of 19 mm to 23 mm.

[0381] In some embodiments of the present disclosure, E Q1 belongs to any value of 23 mm to 27 mm.

[0382] In some embodiments of the present disclosure, E Q1 belongs to any value of 15 mm to 27 mm.

[0383] In some embodiments of the present disclosure, in the above, E Q1 = D Q1 - D Q3 .

[0384] The above E Q1 = D Q1 - D Q3 is defined within the above ranges, which can ensure the gentleness in the movement of the door body 30 in the early stage of the opening of the door body 30. In addition, the above-described configuration defines the overall dimensions of the guide portion 50 and the direction-guiding portion 60 in the direction perpendicular to the door front wall 31, which is beneficial to reduce the thickness of the door body 30, and makes the design of the door body 30 suitable for the requirements of ultra-thin door body.

[0385] In the above, the included angle between the straight line H 1 H 3 , H 2 H 3 and the door front wall 31 or the door side wall 32, and the proportional relationship between them, decide the extension trend of the direction-guiding portion 60, which together determine the running efficiency of the door body 30 during the opening of the door body 30, and make the trajectory changing movement more efficient.

[0386] For the guide portion 50 and the direction-guiding portion 60, the straight line where the first guide boundary point Z 1 and the second guide boundary point Z 2 are located is denoted as a straight line Z 1 Z 2 , and the straight line where the first direction-guiding boundary point H 1 and the second direction-guiding boundary point H 2 are located is denoted as a straight line H 1 H 2 .

[0387] In some embodiments of the present disclosure, an included angle between the straight line Z 1 Z 2 and the straight line H 1 H 2 is denoted as a first relative angle δ 1 , and the first relative angle δ 1 belongs to any value of 33° to 37°.

[0388] In some embodiments of the present disclosure, the first relative angle δ 1 belongs to any value of 38° to 42°.

[0389] In some embodiments of the present disclosure, the first relative angle δ 1 belongs to any value of 42° to 46°.

[0390] In some embodiments of the present disclosure, the first relative angle δ 1 belongs to any value of 38° to 46°.

[0391] The above first relative angle δ 1 is limited within the above ranges, so that both the guide portion 50 and the direction-guiding portion 60 as a whole extend in the width direction of the door body 30, so that the occupation of the thickness space of the door body 30 by the guide portion 50 and the direction-guiding portion 60 is reduced, which is conducive to thinning the door body 30.

[0392] It should be noted that, if the first relative angle δ 1 is large, then the dimension of the guide portion 50 and the direction-guiding portion 60 as a whole in the direction perpendicular to the door front wall 31 increases, thereby increasing the thickness space occupied by the guide portion 50 and the direction-guiding portion 60 as a whole.

[0393] In some embodiments of the present disclosure, the included angle between the straight line Z 1 Z 2 and the door front wall 31 is denoted as a third guide front angle Ω P3 , and the included angle between the straight line H 1 H 2 and the door front wall 31 is denoted as a third direction-guiding front angle Ω Q3 .

[0394] In some embodiments of the present disclosure, Ω P3 belongs to any value of 10° to 15°.

[0395] In some embodiments of the present disclosure, Ω P3 belongs to any value of 15° to 19°.

[0396] In some embodiments of the present disclosure, Ω P3 belongs to any value of 19° to 21°.

[0397] In some embodiments of the present disclosure, Ω P3 belongs to any value of 10° to 21°.

[0398] The above third guide front angle Ω P3 is limited within the above ranges, so that the guide portion 50 extends in the width direction of the door body 30, and further reduces the occupation of the thickness space of the door body 30 by the guide portion 50, which is conducive to thinning the door body 30.

[0399] Further, the third guide front angle Ω P3 is limited within the above ranges, so that the trajectory tendency of the guide portion 50 is gentler, thereby increasing the gentleness of the movement of the first shaft 41 relative to the guide portion 50.

[0400] In some embodiments of the present disclosure, the included angle between the straight line Z 1 Z 2 and the door side wall 32 is denoted as a third guide side angle Ω' P3 , and the included angle between the straight line H 1 H 2 and the door side wall 32 is denoted as a third direction-guiding side angle Ω' Q3 .

[0401] In some embodiments of the present disclosure, Ω' P3 belongs to any value of 69° to 74°.

[0402] In some embodiments of the present disclosure, Ω' P3 belongs to any value of 76° to 80°.

[0403] In some embodiments of the present disclosure, Ω' P3 belongs to any value of 69° to 80°.

[0404] The above third guide side angle Ω' P3 is limited within the above ranges, so that the guide portion 50 extends in the width direction of the door body 30, and further reduces the occupation of the thickness space of the door body 30 by the guide portion 50, which is conducive to thinning the door body 30.

[0405] Further, the third guide side angle Ω' P3 is limited within the above ranges, the trajectory tendency of the guide portion 50 is gentler, thereby increasing the gentleness of the movement of the first shaft 41 relative to the guide portion 50.

[0406] In some embodiments of the present disclosure, the length of the line segment Z 1 Z 2 is denoted as |Z 1 Z 2 |, and |Z 1 Z 2 | belongs to any value of 8 mm to 11 mm.

[0407] In some embodiments of the present disclosure, |Z 1 Z 2 | belongs to any value of 11 mm to 14 mm.

[0408] In some embodiments of the present disclosure, |Z 1 Z 2 | belongs to any value of 8 mm to 14 mm.

[0409] The above |Z 1 Z 2 | is limited within the above ranges, which limits the distance between the end of the guide portion 50 away from the door side wall 32 and the end of the guide portion 50 close to the door side wall 32, and also limits the length dimension of the guide portion 50 in the direction perpendicular to the door side wall 32, so that the guide portion 50 extends in the width direction of the door body 30, thus making full use of the width dimension of the door body 30.

[0410] In some embodiments of the present disclosure, the length of the line segment H 1 H 2 is denoted as |H 1 H 2 |, and |H 1 H 2 | belongs to any value of 25 mm to 28 mm.

[0411] In some embodiments of the present disclosure, |H 1 H 2 | belongs to any value of 28 mm to 32 mm.

[0412] In some embodiments of the present disclosure, |H 1 H 2 | belongs to any value of 32 mm to 36 mm.

[0413] In some embodiments of the present disclosure, |H 1 H 2 | belongs to any value of 36 mm to 39 mm.

[0414] In some embodiments of the present disclosure, |H 1 H 2 | belongs to any value of 25 mm to 39 mm.

[0415] The above |H 1 H 2 | is limited within the above ranges, which limits the distance between the end of the direction-guiding portion 60 away from the door side wall 32 and the end of the direction-guiding portion 60 close to the door side wall 32, and also limits the length dimension of the direction-guiding portion 60 in the direction perpendicular to the door side wall 32, so that the direction-guiding portion 60 extends in the width direction of the door body 30, thus making full use of the width dimension of the door body 30.

[0416] In some embodiments of the present disclosure, the first direction-guiding boundary point H 1 , the first guide boundary point Z 1 , the second guide boundary point Z 2 , and the second direction-guiding boundary point H 2 are sequentially located closer to the door side wall 32.

[0417] In some embodiments of the present disclosure, the second guide boundary point Z 2 , the first direction-guiding boundary point H 1 , the first guide boundary point Z 1 , and the second direction-guiding boundary point H 2 are sequentially located closer to the door rear wall 33.

[0418] In some embodiments of the present disclosure, the included angle between the straight line H 1 H 3 , H 2 H 3 and the door front wall 31 or the door side wall 32, and the proportional relationship between them, the included angle between the straight line Z 1 Z 3 , Z 2 Z 3 and the door front wall 31 or the door side wall 32, and the proportional relationship between them, decide the extension trends of the direction-guiding portion 60 and the guide portion 50, which together determine the running efficiency of the door body 30 during the opening of the door body 30, and make the trajectory changing movement more efficient.

[0419] In some embodiments of the present disclosure, with reference to FIG. 6, the straight line passing through the third guide boundary point Z 3 and being perpendicular to the straight line Z 1 Z 2 is denoted as a first straight line χ 1 , and the first straight line χ 1 intersects with the straight line Z 1 Z 2 at a first foot of the perpendicular Zc. That is, the height of the triangle Z 1 Z 2 Z 3 on the edge Z 1 Z 2 as a bottom edge is the line segment Z 3 Z C , and Zc is a foot of the perpendicular.

[0420] In some embodiments of the present disclosure, the first foot of the perpendicular Zc is located on the line segment Z 1 Z 2 .

[0421] In some embodiments of the present disclosure, the length of the line segment Z 3 Z C is denoted as |Z 3 Z C |, and |Z 3 Z C | belongs to any value of 6 mm to 8 mm.

[0422] In some embodiments of the present disclosure, |Z 3 Z C | belongs to any value of 8 mm to 11 mm.

[0423] In some embodiments of the present disclosure, |Z 3 Z C | belongs to any value of 11 mm to 12 mm.

[0424] In some embodiments of the present disclosure, |Z 3 Z C | belongs to any value of 8 mm to 12 mm.

[0425] The above |Z 3 Z C | is limited within the above ranges, it decides the extension trend of the guide portion 50 and reserves a space for the direction-guiding portion 60, so as to avoid interference between the guide portion 50 and the direction-guiding portion 60.

[0426] In some embodiments of the present disclosure, the length of the line segment Z 1 Z 2 is |Z 1 Z 2 |, and the ratio of |Z 3 Z C | to |Z 1 Z 2 | belongs to any value of 0.4 to 0.6.

[0427] In some embodiments of the present disclosure, the ratio of |Z 3 Z C | to |Z 1 Z 2 | belongs to any value of 0.6 to 0.8.

[0428] In some embodiments of the present disclosure, the ratio of |Z 3 Z C | to |Z 1 Z 2 | belongs to any value of 0.4 to 0.8.

[0429] The above ratio of |Z 3 Z C | to |Z 1 Z 2 | is limited within the above ranges, so that the door body 30 moves inward and forward in the early stage of the opening of the door body 30, and the first side edge W is effectively controlled to rotate toward the side away from the housing cabinet 100, so as to avoid collision between the first side edge W and the housing cabinet 100.

[0430] Further, the above ratio of |Z 3 Z C | to |Z 1 Z 2 | is limited within the above ranges, which defines the overall extension trend of the guide portion 50, promotes the guide portion 50 as a whole to extend mainly in the width direction of the door body 30, and restrains the length dimension of the guide portion 50 in the direction perpendicular to the door side wall 32, so as to fully utilize the width dimension of the door body 30, thereby facilitating the thinning of the door body 30 and being suitable for the ultra-thin door body 30.

[0431] In some embodiments of the present disclosure, the length of the line segment Z 1 Z C is denoted as |Z 1 Z C |, and |Z 1 Z C | belongs to any value of 4 mm to 6 mm.

[0432] In some embodiments of the present disclosure, |Z 1 Z C | belongs to any value of 6 mm to 8 mm.

[0433] In some embodiments of the present disclosure, |Z 1 Z C | belongs to any value of 8 mm to 9 mm.

[0434] In some embodiments of the present disclosure, |Z 1 Z C | belongs to any value of 4 mm to 9 mm.

[0435] In some embodiments of the present disclosure, the length of the line segment Z C Z 2 is denoted as |Z C Z 2 |, and |Z C Z 2 | belongs to any value of 6 mm to 7 mm.

[0436] In some embodiments of the present disclosure, |Z C Z 2 | belongs to any value of 7 mm to 10 mm.

[0437] In some embodiments of the present disclosure, |Z C Z 2 | belongs to any value of 10 mm to 13 mm.

[0438] In some embodiments of the present disclosure, |Z C Z 2 | belongs to any value of 6 mm to 13 mm.

[0439] In some embodiments of the present disclosure, the ratio of |Z 1 Z C | to |Z C Z 2 | belongs to any value of 0.4 to 0.7.

[0440] In some embodiments of the present disclosure, the ratio of |Z 1 Z C | to |Z C Z 2 | belongs to any value of 0.7 to 0.9.

[0441] In some embodiments of the present disclosure, the ratio of |Z 1 Z C | to |Z C Z 2 | belongs to any value of 0.9 to 1.

[0442] In some embodiments of the present disclosure, the ratio of |Z 1 Z C | to |Z C Z 2 | belongs to any value of 0.4 to 1.

[0443] The above ratio of |Z 1 Z C | to |Z C Z 2 | is limited within the above ranges, which further defines the overall extension trend of the guide portion 50, promotes the guide portion 50 as a whole to extend mainly in the width direction of the door body 30, and restrains the length dimension of the guide portion 50 in the direction perpendicular to the door side wall 32, so as to fully utilize the width dimension of the door body 30, thereby facilitating the thinning of the door body 30 and being suitable for the ultra-thin door body 30.

[0444] In some embodiments of the present disclosure, with reference to FIG. 6, the straight line passing through the third direction-guiding boundary point H 3 and being perpendicular to the straight line H 1 H 2 is denoted as a second line χ 2 , and the second line χ 2 intersects with the straight line H 1 H 2 at a second foot of the perpendicular H C . That is, the height of the triangle H 1 H 2 H 3 on the edge H 1 H 2 as a bottom edge is the line segment H 3 H C , and H C is a foot of the perpendicular.

[0445] In some embodiments of the present disclosure, the second foot of the perpendicular H C is located on the line segment H 1 H 2 .

[0446] In some embodiments of the present disclosure, the length of the line segment H 1 H C is denoted as |H 1 H C |, and |H 1 H C | belongs to any value of 20 mm to 24 mm.

[0447] In some embodiments of the present disclosure, |H 1 H C | belongs to any value of 24 mm to 28 mm.

[0448] In some embodiments of the present disclosure, |H 1 H C | belongs to any value of 28 mm to 32 mm.

[0449] In some embodiments of the present disclosure, |H 1 H C | belongs to any value of 32 mm to 36 mm.

[0450] In some embodiments of the present disclosure, |H 1 H C | belongs to any value of 20 mm to 36 mm.

[0451] In some embodiments of the present disclosure, the ratio of |H 1 H C | to |H C H 2 | belongs to any value of 4 to 6.

[0452] In some embodiments of the present disclosure, the ratio of |H 1 H C | to |H C H 2 | belongs to any value of 6 to 9.

[0453] In some embodiments of the present disclosure, the ratio of |H 1 H C | to |H C H 2 | belongs to any value of 9 to 10.

[0454] In some embodiments of the present disclosure, the ratio of |H 1 H C | to |H C H 2 | belongs to any value of 4 to 10.

[0455] The above ratio of |H 1 H C | to |H C H 2 | is limited within the above ranges, which further defines the overall extension trend of the direction-guiding portion 60, promotes the direction-guiding portion 60 as a whole to extend mainly in the width direction of the door body 30, and restrains the length dimension of the direction-guiding portion 60 in the direction perpendicular to the door side wall 32, so as to fully utilize the width dimension of the door body 30, thereby facilitating the thinning of the door body 30 and being suitable for the ultra-thin door body 30.

[0456] The above ratio of |H 1 H C | to |H C H 2 | and the above ratio of |Z 1 Z C | to |Z C Z 2 | collectively define the overall trends of the guide portion 50 and the direction-guiding portion 60, so that the door body 30 has a movement tendency to move inward and forward when opening the door body 30, thereby reducing the limitation on the maximum angle to which the door body 30 can be opened by the housing cabinet 100. On the other hand, it makes the guide portion 50 and the direction-guiding portion 60 of the present disclosure more advantageous in the thinning of the door body 30.

[0457] In some embodiments of the present disclosure, in a direction perpendicular to the door side wall 32, the distance between the first guide boundary point Z 1 and the first direction-guiding boundary point H 1 is denoted as |D' P1 - D' Q1 |, |D' P1 - D' Q1 | belongs to any value of 6 mm to 10 mm.

[0458] In some embodiments of the present disclosure, |D' P1 - D' Q1 | belongs to any value of 10 mm to 14 mm.

[0459] In some embodiments of the present disclosure, |D' P1 - D' Q1 | belongs to any value of 14 mm to 18 mm.

[0460] In some embodiments of the present disclosure, |D' P1 - D' Q1 | belongs to any value of 6 mm to 17 mm.

[0461] The above |D' P1 -D' Q1 | is the absolute value of the difference between the distance D' P1 from the first guide boundary point Z 1 to the door side wall 32 and the distance D' Q1 from the first direction-guiding boundary point H 1 to the door side wall 32.

[0462] In some embodiments of the present disclosure, the first guide boundary point Z 1 is located at a side of the first direction-guiding boundary point H 1 close to the door side wall 32. That is, D' P1 < D' Q1 .

[0463] The above |D' P1 -D' Q1 | is limited within the above ranges, which ensures that the guide portion 50 for the first shaft 41 to move relative to the door body 30 would not overlap with the direction-guiding portion 60 for the second shaft 42 to move relative to the door body 30, thereby guaranteeing the integrities of the guide portion 50 and the direction-guiding portion 60. Further, a space for the fixing by screw is reserved between the end of the guide portion 50 away from the door side wall 32 and the end of the direction-guiding portion 60 away from the door side wall 32.

[0464] In some embodiments of the present disclosure, the distance between the first guide boundary point Z 1 and first direction-guiding boundary point H 1 is denoted as |Z 1 H 1 |, that is, the length of the line segment Z 1 H 1 is denoted as |Z 1 H 1 |, and |Z 1 H 1 | belongs to any value of 6 mm to 10mm.

[0465] In some embodiments of the present disclosure, |Z 1 H 1 | belongs to any value of 10 mm to 14 mm.

[0466] In some embodiments of the present disclosure, |Z 1 H 1 | belongs to any value of 14 mm to 19 mm.

[0467] In some embodiments of the present disclosure, |Z 1 H 1 | belongs to any value of 6 mm to 19 mm.

[0468] In some embodiments of the present disclosure, the included angle between the straight line Z 1 H 1 where the first guide boundary point Z 1 and the first direction-guiding boundary point H 1 are located and the door front wall 31 is denoted as a first relative front angle ζ 1 , and ζ 1 belongs to any value of 10° to 14°.

[0469] In some embodiments of the present disclosure, ζ 1 belongs to any value of 14° to 18°.

[0470] In some embodiments of the present disclosure, ζ 1 belongs to any value of 10° to 18°.

[0471] In some embodiments of the present disclosure, the included angle between the straight line Z 1 H 1 and the door side wall 32 is denoted as a first relative side angle ζ' 1 , and ζ' 1 belongs to any value of 70° to 75°.

[0472] In some embodiments of the present disclosure, ζ' 1 belongs to any value of 75° to 79°.

[0473] In some embodiments of the present disclosure, ζ' 1 belongs to any value of 70° to 79°.

[0474] The above first relative side angle ζ' 1 is limited within the above ranges, which can ensure that the end of the guide portion 50 away from the door side wall 32 is located on the side close to the door side wall 32 and away from the door front wall 31 of the end of the direction-guiding portion 60 away from the door side wall 32. In this way, on the one hand, it is ensured that the movement trajectory of the first shaft 41 relative to the guide portion 50 would not overlap with the movement trajectory of the second shaft 42 relative to the direction-guiding portion 60, so as to ensure the integrities of the guide portion 50 and the direction-guiding portion 60. On the other hand, a space for the fixing by screw is reserved between the end of the guide portion 50 away from the door side wall 32 and the end of the direction-guiding portion 60 away from the door side wall 32.

[0475] In some embodiments of the present disclosure, in a direction perpendicular to the door side wall 32, the distance between the second guide boundary point Z 2 and the first direction-guiding boundary point H 1 is |D' P2 - D' Q1 |, and |D' P2 - D' Q1 | belongs to any value of 18 mm to 22 mm.

[0476] In some embodiments of the present disclosure, |D' P2 - D' Q1 | belongs to any value of 22 mm to 26 mm.

[0477] In some embodiments of the present disclosure, |D' P2 - D' Q1 | belongs to any value of 26 mm to 30 mm.

[0478] In some embodiments of the present disclosure, |D' P2 - D' Q1 | belongs to any value of 30 mm to 32 mm.

[0479] In some embodiments of the present disclosure, |D' P2 - D' Q1 | belongs to any value of 18 mm to 32 mm.

[0480] The above |D' P2 -D' Q1 | is the absolute value of the difference between the distance D' P2 from the second guide boundary point Z 2 to the door side wall 32 and the distance D' Q1 from the first direction-guiding boundary point H 1 to the door side wall 32.

[0481] In some embodiments of the present disclosure, the second guide boundary point Z 2 is located at a side of the first direction-guiding boundary point H 1 close to the door side wall 32. That is, D' P2 < D' Q1 .

[0482] In some embodiments of the present disclosure, the distance between the second guide boundary point Z 2 and the first direction-guiding boundary point H 1 is denoted as |Z 2 H 1 |, that is, the length of the line segment Z 2 H 1 is denoted as |Z 2 H 1 |, and |Z 2 H 1 | belongs to any value of 18mm to 22mm.

[0483] In some embodiments of the present disclosure, |Z 2 H 1 | belongs to any value of 22 mm to 26 mm.

[0484] In some embodiments of the present disclosure, |Z 2 H 1 | belongs to any value of 26 mm to 30 mm.

[0485] In some embodiments of the present disclosure, |Z 2 H 1 | belongs to any value of 18 mm to 30 mm.

[0486] In some embodiments of the present disclosure, in a direction perpendicular to the door front wall 31, the distance between the second guide boundary point Z 2 and the second direction-guiding boundary point H 2 is denoted as D Q2 -D P2 , and D Q2 -D P2 belongs to any value of 6 mm to 10 mm.

[0487] In some embodiments of the present disclosure, D Q2 - D P2 belongs to any value of 10 mm to 14 mm.

[0488] In some embodiments of the present disclosure, D Q2 - D P2 belongs to any value of 14 mm to 18 mm.

[0489] In some embodiments of the present disclosure, D Q2 - D P2 belongs to any value of 6 mm to 18 mm.

[0490] The above D Q2 -D P2 is limited within the above ranges, which defines the relative positional relationship between one end of the guide portion 50 close to the door side wall 32 and one end of the direction-guiding portion 60 close to the door side wall 32 in a direction perpendicular to the door front wall 31, and ensures that the guide portion 50 and the direction-guiding portion 60 have a sufficient space on the door body 30 so that the door body 30 can be continuously rotated and opened from 90° to the maximum angle G max (greater than or equal to 115°, such as 120°).

[0491] The second guide boundary point Z 2 is located at the side of the second direction-guiding boundary point H 2 close to the door front wall 31, or the second guide boundary point Z 2 is located at the side of the second direction-guiding boundary point H 2 away from the door front wall 31.

[0492] In some embodiments of the present disclosure, the second guide boundary point Z 2 is located at a side of the second direction-guiding boundary point H 2 close to the door front wall 31. That is, D Q2 > D P2 .

[0493] In some embodiments of the present disclosure, the distance between the second guide boundary point Z 2 and second direction-guiding boundary point H 2 is denoted as |Z 2 H 2 |, that is, the length of the line segment Z 2 H 2 is denoted as |Z 2 H 2 |, and |Z 2 H 2 | belongs to any value of 6 mm to 11 mm.

[0494] In some embodiments of the present disclosure, |Z 2 H 2 | belongs to any value of 11 mm to 14 mm.

[0495] In some embodiments of the present disclosure, |Z 2 H 2 | belongs to any value of 14 mm to 19 mm.

[0496] In some embodiments of the present disclosure, |Z 2 H 2 | belongs to any value of 6 mm to 19 mm.

[0497] In some embodiments of the present disclosure, the included angle between the straight line Z 2 H 2 where the second guide boundary point Z 2 and the second direction-guiding boundary point H 2 are located and the door front wall 31 is denoted as a third relative front angle ζ 3 , and ζ 3 belongs to any value of 74° to 79°.

[0498] The above third relative front angle ζ 3 is limited within the above ranges, which can increase the efficiency of inward and forward movement of the door body 30, and reduce the restriction of the opening angle of the door body 30 by the housing cabinet 100.

[0499] On the other hand, the third relative front angle ζ 3 is limited within the above ranges, which defines the relative positional relationship between the one end of the guide portion 50 close to the door side wall 32 and the one end of the direction-guiding portion 60 close to the door side wall 32 in the direction perpendicular to the door side wall 32, and increases the overlap degree of spaces occupied by the guide portion 50 and the direction-guiding portion 60 in the width direction of the door body 30, thereby reducing the space occupied by the guide portion 50 and the direction-guiding portion 60 as a whole in the width dimension of the door body 30, making the arrangement of the guide portion 50 and the direction-guiding portion 60 more compact, thus the strength of the door body 30 is ensured while reducing the manufacturing cost.

[0500] In some embodiments of the present disclosure, the included angle between the straight line Z 2 H 2 and the door side wall 32 is denoted as a third relative side angle ζ' 3 , and ζ' 3 belongs to any value of 2° to 4°.

[0501] In some embodiments of the present disclosure, ζ' 3 belongs to any value of 10° to 15°.

[0502] In some embodiments of the present disclosure, ζ' 3 belongs to any value of 15° to 16°.

[0503] In some embodiments of the present disclosure, ζ' 3 belongs to any value of 10° to 16°.

[0504] The above third relative side angle ζ' 3 is limited within the above ranges, which can increase the efficiency of inward and forward movement of the door body 30, and reduce the restriction of the opening angle of the door body 30 by the housing cabinet 100.

[0505] On the other hand, the third relative side angle ζ' 3 is limited within the above ranges, which further defines the relative positional relationship between the one end of the guide portion 50 close to the door side wall 32 and the one end of the direction-guiding portion 60 close to the door side wall 32 in the direction perpendicular to the door side wall 32, and improves the overlap degree of spaces occupied by the guide portion 50 and the direction-guiding portion 60 in the width direction of the door body 30, thereby reducing the space occupied by the guide portion 50 and the direction-guiding portion 60 as a whole in the width dimension of the door body 30, and making the arrangement of the guide portion 50 and the direction-guiding portion 60 more compact, thus the strength of the door body 30 is ensured while reducing the manufacturing cost.

[0506] In some embodiments of the present disclosure, the distance between the first guide boundary point Z 1 and the second direction-guiding boundary point H 2 is denoted as |Z 1 H 2 |, that is, the length of the line segment Z 1 H 2 is denoted as |Z 1 H 2 |, and |Z 1 H 2 | belongs to any value of 12 mm to 16 mm.

[0507] In some embodiments of the present disclosure, |Z 1 H 2 | belongs to any value of 16 mm to 20 mm.

[0508] In some embodiments of the present disclosure, |Z 1 H 2 | belongs to any value of 12 mm to 20 mm.

[0509] In some embodiments of the present disclosure, when the opening angle of the door body 30 is G 7 = 90°, the first central axis P is located at the seventh guide point P 7 of the guide trajectory line S, and the second central axis Q is located at the seventh direction-guiding point Q 7 of the direction-guiding trajectory line K.

[0510] In some embodiments of the present disclosure, referring to FIG. 13, the seventh direction-guiding point Q 7 is located at the side of the seventh guide point P 7 away from the door side wall 32 and the door front wall 31.

[0511] The eighth guide point P 8 is located at the side of the seventh guide point P 7 close to the door side wall 32 and the door front wall 31.

[0512] The seventh guide point P 7 is located at the side of the straight line Q 7 P 8 where the seventh guide point Q 7 and the eighth guide point P 8 are located close to the door side wall 32.

[0513] In some embodiments of the present disclosure, ∠Q 7 P 7 P 8 belongs to any value of 171° to 174°.

[0514] In some embodiments of the present disclosure, ∠Q 7 P 7 P 8 belongs to any value of 174° to 178°.

[0515] In some embodiments of the present disclosure, ∠Q 7 P 7 P 8 belongs to any value of 178° to 180°.

[0516] In some embodiments of the present disclosure, ∠Q 7 P 7 P 8 belongs to any value of 171° to 180°.

[0517] The above limitations on the angular ranges of ∠Q 7 P 7 P 8 , define the relative positions of the seventh guide point P 7 , the eighth guide point P 8 , and the seventh direction-guiding point Q 7 . On the one hand, it makes the segment P 7 P 8 extending from P 7 to P 8 of the guide trajectory line S smoother than the straight trajectory tangent to point P 7 on the direction-guiding trajectory line S. On the other hand, the above limitations maintain a greater inward and forward movement efficiency during the process in which the door body 30 is continuously opened from 90°, thereby reducing the influence on the door body 30 by the housing cabinet 100, increasing the maximum angle to which the door body 30 of the refrigerator housed in the housing cabinet 100 can be opened, and facilitating the user to take out or place in articles.

[0518] In some embodiments of the present disclosure, a straight line where the seventh guide point P 7 and the eighth guide point P 8 are located is denoted as a straight line P 7 P 8 , an included angle between the straight line P 7 P 8 and the door front wall 31 is denoted as a guide front inclined angle µ P , and an included angle between the straight line P 7 P 8 and the door side wall 32 is denoted as a guide side inclined angle µ' P .

[0519] A straight line where the seventh direction-guiding point Q 7 and the seventh guide point P 7 are located is denoted as a straight line P 7 Q 7 , an included angle between the straight line P 7 Q 7 and the door front wall 31 is denoted as a first front inclined angle µ PQ , and an included angle between the straight line P 7 Q 7 and the door side wall 32 is denoted as a first side inclined angle µ' PQ .

[0520] In some embodiments of the present disclosure, the guide front inclined angle µ P ≥ the first front inclined angle µ PQ .

[0521] In some embodiments of the present disclosure, the first front inclined angle µ PQ belongs to any value of 70° to 72°.

[0522] In some embodiments of the present disclosure, the first front inclined angle µ PQ belongs to any value of 72° to 75°.

[0523] In some embodiments of the present disclosure, the first front inclined angle µ PQ belongs to any value of 75° to 78°.

[0524] In some embodiments of the present disclosure, the first front inclined angle µ PQ belongs to any value of 70° to 78°.

[0525] In some embodiments of the present disclosure, the guide front inclined angle µ P belongs to any value of 72° to 75°.

[0526] In some embodiments of the present disclosure, the guide front inclined angle µ P belongs to any value of 75° to 79°.

[0527] In some embodiments of the present disclosure, the guide front inclined angle µ P belongs to any value of 72° to 79°.

[0528] The above limitations on the first front inclined angle µ PQ , the guide front inclined angle µ P , and their relative relationships, further define the relative positions of the seventh guide point P 7 , the eighth guide point P 8 , and the seventh direction-guiding point Q 7 . On the one hand, it makes the segment P 7 P 8 extending from P 7 to P 8 of the guide trajectory line S smoother than the straight trajectory tangent to point P 7 on the direction-guiding trajectory line S. On the other hand, the above limitations maintain a greater inward and forward movement efficiency during the process in which the door body 30 is continuously opened from 90°, thereby reducing the influence on the door body 30 by the housing cabinet 100, increasing the maximum angle to which the door body 30 of the refrigerator housed in the housing cabinet 100 can be opened, and facilitating the user to take out or place in articles.

[0529] In some embodiments of the present disclosure, the first side inclined angle µ' PQ ≥ the guide front inclined angle µ P .

[0530] In some embodiments of the present disclosure, the guide side inclined angle µ' P belongs to any value of 11° to 15°.

[0531] In some embodiments of the present disclosure, the first side inclined angle µ' PQ belongs to any value of 10° to 14°.

[0532] In some embodiments of the present disclosure, the first side inclined angle µ' PQ belongs to any value of 14° to 18°.

[0533] In some embodiments of the present disclosure, the first side inclined angle µ' PQ belongs to any value of 18° to 20°.

[0534] In some embodiments of the present disclosure, the first side inclined angle µ' PQ belongs to any value of 10° to 20°.

[0535] The above limitations on the guide side inclined angle µ' P , the first side inclined angle µ' PQ , and their relative relationships, once again further define the relative positions of the seventh guide point P 7 , the eighth guide point P 8 , and the seventh direction-guiding point Q 7 . On the one hand, it makes the segment P 7 P 8 extending from P 7 to P 8 of the guide trajectory line S smoother than the straight trajectory tangent to point P 7 on the direction-guiding trajectory line S. On the other hand, the above limitations maintain a greater inward and forward movement efficiency during the process in which the door body 30 is continuously opened from 90°, thereby reducing the influence on the door body 30 by the housing cabinet 100, increasing the maximum angle to which the door body 30 of the refrigerator housed in the housing cabinet 100 can be opened, and facilitating the user to take out or place in articles.

[0536] It should be noted that, the included angle mentioned in the present disclosure refers to an included angle between a line and a line, an included angle between a line and a surface, or an included angle between a surface and a surface, and the range of the "included angle" is any value of 0° to 90°.

[0537] In some embodiments of the present disclosure, the second shaft 42 is located on a side of the first shaft 41 away from the second side edge N.

[0538] In some embodiments of the present disclosure, the direction-guiding portion 60 is located on a side of the guide portion 50 away from the first side edge W.

[0539] In some embodiments of the present disclosure, 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.

[0540] In some embodiments of the present disclosure, the second shaft 42 moves, relative to the direction-guiding portion 60, 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.

[0541] When the first shaft 41 moves relative to the guide portion 50 and the second shaft 42 moves relative to the direction-guiding portion 60, 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 100 so that the door body 30 cannot be opened.

[0542] In some embodiments of the present disclosure, 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°.

[0543] In some embodiments of the present disclosure, 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.

[0544] In some embodiments of the present disclosure, 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.

[0545] In some embodiments of the present disclosure, 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.

[0546] In some embodiments of the present disclosure, 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 perpendicular to the first body side wall.

[0547] 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 can be construed 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, the present disclosure will be described in a manner in which 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.

[0548] In some embodiments of the present disclosure, 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. The center of the axial line segment PQ is denoted as an axial midpoint I. As shown in 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, so that the door body 30 can move inward (in the direction getting closer to the second body side wall) by a distance as the door body 30 rotates, so that the door body 30 would not interfere with the housing cabinet 100, and it is ensured that the door body 30 can be effectively opened.

[0549] The movement of the door body 30 relative to the refrigerator body 10 is equivalent to 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 having the first shaft 41 and the second shaft 42 is fixed to the refrigerator body 10, and the second hinge member having the guide portion 50 and the direction-guiding portion 60 is located on 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 guide portion 50 and the direction-guiding portion 60) 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.

[0550] In the following descriptions, for convenience of description, the movement of the axial line segment PQ relative to the second hinge member (the guide portion 50 and the direction-guiding portion 60) 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 of the present disclosure with respect to relative movement is described in terms of relative movement within a two-dimensional plane.

[0551] As shown in FIG. 6, in some embodiments of the present disclosure, when the door body 30 is in the closed state, 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.

[0552] In some embodiments of the present disclosure, when the door body 30 is in the closed state, 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. The second shaft 42 is located on the side of the first shaft 41 close to the door front wall 31 and away from the door side wall 32.

[0553] In some embodiments of the present disclosure, when the door body 30 is closed, 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 closed, 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.

[0554] As shown in FIGS. 6 to 24, the present embodiment is described using an example in which the refrigerator is opened to the eighth angle G 8 > 90° (G max = G 8 ) under 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. During the process in which the door body 30 is opened from the closed state to the eighth angle G 8 , when the door body 30 is rotated and opened to a predetermined 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 specifically as follows.

[0555] In the following descriptions, φ represents an opening angle of the door body 30, the opening angle φ = 0° when the door body 30 is closed, and the opening angle φ is a positive number when the door body 30 is opened with respect to the refrigerator body 10 to open the access opening.

[0556] In some embodiments of the present disclosure, when the opening angle of the door body 30 is G 0 , it corresponds to that the opening angle of the door body 30 is φ = G 0 = 0°.

[0557] In some embodiments of the present disclosure, when the opening angle of the door body 30 is φ = G 0 = 0°, the door front wall 31 is parallel to the plane where the access opening is located.

[0558] In some embodiments of the present disclosure, when the opening angle of the door body 30 is φ = G 0 = 0°, the door rear wall 33 is perpendicular to the plane where the access opening is located.

[0559] In some embodiments of the present disclosure, when the opening angle of the door body 30 is φ = G 0 = 0°, the door side wall 32 is parallel to the plane where the access opening is located.

[0560] In some embodiments of the present disclosure, when the opening angle of the door body 30 is φ = G 0 = 0°, the door body 30 is denoted as in a closed state.

[0561] When the door body 30 continues to move from the closed state (φ = G 0 = 0°) along the closing direction and further squeeze the door seal strip, the door body 30 is opened to an angle having a negative value.

[0562] As shown in FIG. 6, when φ = 0°, the door body 30 is in the closed state. 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.

[0563] As shown in Fig. 7, φ∈(0°, G 2 ), the door body 30 is in the process during which it is rotated from the closed state to open to G 2 . In the above opening 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.

[0564] In some embodiments of the present disclosure, 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.

[0565] In the above, when the door body 30 is opened to an angle φ∈(0°, G 2 ), in this interval of opening angle, the movement tendencies of the first shaft 41 and the second shaft 42 are kept to be consistent with each other. The only distinction between them is that, their opening angles are different, 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. Thus, when the opening angle φ∈(0°, G 2 ), any opening angle selected from this range 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. As shown in Fig. 7, if φ = G 1 , then it represents a comparison between the position in the interval to which the opening angle belongs and the position when the door body 30 is opened to another state. Where 0° < G 1 < G 2 . For example, when the door body 30 is opened to G 1 , 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.

[0566] As shown in FIGS. 7 and 17, 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.

[0567] As shown in FIGS. 8 and 18, 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, 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, and is located at the end point of the first guide line of the guide trajectory line S close to the door side wall 32. 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. Configurable, G 2 ∈any value of [16°, 25°].

[0568] As shown in Fig. 9, when φ∈(G 2 , G 4 ), the door body 30 is in the process during which it is rotated from G 2 to open to G 4 . In the above opening 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.

[0569] In some embodiments of the present disclosure, 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.

[0570] In the above, when the door body 30 is opened to an angle φ∈(G 2 , G 4 ), within this interval of opening angle, the movement tendencies of the first shaft 41 and the second shaft 42 are kept to be consistent with each other. The only distinction between them is that, their opening angles are different, 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 2 , G 4 ), any opening angle selected from this range 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. As shown in Fig. 9, if φ = G 3 , then it represents a comparison between the position in the interval to which the opening angle belongs and the position when the door body 30 is opened to another state. Where, G 2 < G 3 < G 4 . For example, when the door body 30 is opened to 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.

[0571] As shown in FIGS. 9 and 19, 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.

[0572] As shown in FIGS. 10 and 20, 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. Configurable, G 4 ∈any value of [38°, 47°].

[0573] As shown in Fig. 11, when φ∈(G 4 , G 6 ), the door body 30 is in the process during which it is rotated from G 4 to open to G 6 . In the above opening process, the first central axis P moves 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 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.

[0574] In some embodiments of the present disclosure, 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.

[0575] In the above, when the door body 30 is opened to an angle φ∈(G 4 , G 6 ), within this interval of opening angle, the movement tendencies of the first shaft 41 and the second shaft 42 are kept to be consistent with each other. The only distinction between them is that, their opening angles are different, 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 this range 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. As shown in Fig. 11, if φ = G 5 , then it represents a comparison between the position in the interval to which the opening angle belongs and the position when the door body 30 is opened to another state. Where, G 4 < G 5 < G 6 . 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.

[0576] As shown in 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.

[0577] As shown in 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 5 close to the door side wall 32 and the door front wall 31. Configurable, G 6 ∈any value of [86°, 90°].

[0578] As shown in Fig. 13, when φ∈(G 6 , G 8 ), the door body 30 is in the process during which it is rotated from G 6 to open to G 8 . In the above opening process, the first central axis P moves 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 along the direction-guiding trajectory line K in a direction getting closer to the door front wall 31 and the door side wall 32.

[0579] In some embodiments of the present disclosure, 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.

[0580] In the above, when the door body 30 is opened to an angle φ∈(G 6 , G 8 ), within this interval of opening angle, the movement tendencies of the first shaft 41 and the second shaft 42 are kept to be consistent with each other. The only distinction between them is that, their opening angles are different, 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 this range 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. As shown in Fig. 13, if φ = G 7 , then it represents a comparison between the position in the interval to which the opening angle belongs and the position when the door body 30 is opened to another state. Where, G 6 < G 7 < G 8 . 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.

[0581] As shown in 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.

[0582] In some embodiments of the present disclosure, φ = G 7 = 90°.

[0583] In some embodiments of the present disclosure, 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.

[0584] 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.

[0585] In some embodiments of the present disclosure, 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 .

[0586] In some embodiments of the present disclosure, 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.

[0587] In some embodiments of the present disclosure, 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. 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 and 6 mm.

[0588] The above configurations allow 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, so as to reduce the restriction by the housing cabinet 100 on the continued opening of the door body 30 from 90° to the limit angle. 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 ensured to be sufficiently large, the above configurations can also reduce the shielding on the access opening when the door body 30 is opened to 90° as much as possible.

[0589] As shown in 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 8 along with the axial line segment PQ, and the eighth midpoint I 8 is located at the side of the seventh midpoint I 7 close to the door side wall 32 and the door front wall 31. Configurable, G max is greater than or equal to 115°. Configurable, G max ∈any value of [115°, 125°].

[0590] In some embodiments of the present disclosure, 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.

[0591] In some embodiments of the present disclosure, 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 33, 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.

[0592] In this embodiment, 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.

[0593] Here, it should be noted that in the present disclosure, the as 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 the present disclosure, and the trajectory characteristics during the process in which the door body 30 continues to open from the maximum angle G max until it reaches 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.

[0594] In combination with the above situation where the door body 30 is opened to a specific angle, in some embodiments of the present disclosure, 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 rear wall 33. That is, the first shaft 41 keeps moving in one direction without altering the direction, so that the direction of the force received by the first shaft 41 during the opening of the door body 30 is always consistent, and thus, the service life of the guide portion 50 can be improved. Further, the first shaft 41 maintains 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 first shaft 41 can also be improved.

[0595] In some embodiments of the present disclosure, during the process of opening the door body 30 to the maximum angle G max , 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, the second shaft 42 keeps moving in one direction without altering the direction, so that the direction of the force received by the second shaft 42 during the opening of the door body 30 is always consistent, and thus, the service life of the direction-guiding portion 60 can be improved. Further, the second shaft 42 maintains 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 second shaft 42 can also be improved.

[0596] In some embodiments of the present disclosure, 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, and the service lives of the guide portion 50 and the direction-guiding portion 60 are improved. Further, the first shaft 41and the second shaft 42 maintains 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 also improved.

[0597] The hinge assembly having 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.

[0598] 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 has the following situations.

[0599] During the process of opening the door body 30 from the closed state to 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.

[0600] During the process of opening the door body 30 from G 4 to 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.

[0601] During the process of opening the door body 30 from G 6 to 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.

[0602] In some embodiments of the present disclosure, G 4 :G 8 belongs to any value of 0.35 to 0.65.

[0603] In some embodiments of the present disclosure, G 4 :G 8 belongs to any value of 0.45 to 0.55.

[0604] In some embodiments of the present disclosure, G 4 :G 8 belongs to any value of 0.35 to 0.45.

[0605] In some embodiments of the present disclosure, G 4 :G 8 belongs to any value of 0.45 to 0.65.

[0606] In some embodiments of the present disclosure, G 4 belongs to any value of 35° to 45°.

[0607] In some embodiments of the present disclosure, G 4 belongs to any value of 35° to 38°.

[0608] In some embodiments of the present disclosure, G 4 belongs to any value of 38° to 42°.

[0609] In some embodiments of the present disclosure, G 4 belongs to any value of 42° to 45°.

[0610] In some embodiments of the present disclosure, G 8 belongs to any value of 70° to 90°.

[0611] In some embodiments of the present disclosure, G 8 belongs to any value of 70° to 75°.

[0612] In some embodiments of the present disclosure, G 8 belongs to any value of 75° to 80°.

[0613] In some embodiments of the present disclosure, G 8 belongs to any value of 80° to 85°.

[0614] In some embodiments of the present disclosure, G 8 belongs to any value of 85° to 90°.

[0615] As a configurable way, G 4 belongs to any value of 38° to 42°.

[0616] As a configurable way, G 4 belongs to any value of 34° to 38°.

[0617] As a configurable way, G 4 belongs to any value of 42° to 46°.

[0618] As a configurable way, G 4 belongs to any value of 34° to 46°.

[0619] In some embodiments of the present disclosure, G 8 belongs to any value of 75° to 80°.

[0620] In some embodiments of the present disclosure, G 8 belongs to any value of 80° to 85°.

[0621] In some embodiments of the present disclosure, G 8 belongs to any value of 75° to 85°.

[0622] Hereinafter, referring to FIG. 16 in combination with FIGS. 6 to 14, 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) In the first stage, as shown in combination of FIGS. 6 to 10 and FIGS. 16 to 20, which shows the process in which the door body 30 is rotated from the closed state to G 4 .

[0623] In this first stage, the door body 30 starts from 0°, passes through G 1 , G 2 , and G 3 , and is opened 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 in a direction getting closer to the door rear wall 33 and the door side wall 32.

[0624] 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 fourth direction-guiding point Q 4 in this order along the direction-guiding trajectory line K.

[0625] In the opening process of the first stage described above, descriptions will be made by using the second hinge member (the guide portion 50 / the direction-guiding portion 60 / the door body 30) as a reference object.

[0626] During the process of opening the door body 30 from 0° to G 4 , the axial line segment PQ rotates clockwise from P 0 Q 0 and move 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.

[0627] Since the guide portion 50 and the direction-guiding portion 60 are provided on the door body 30, and 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, during the entire process of opening the door body 30 from the closed state 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 certain distance in a direction getting closer to the door side wall 32 and the door rear wall 33.

[0628] In summary, during the process of opening the door body 30 from the closed state to the fourth angle G 4 , taking the door body 30 (the guide groove / the direction-guiding groove) as a reference object, the refrigerator body 10 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 directed toward the side of the door side wall 32, and a displacement parallel to the door side wall 33 and directed toward the side away from the door front wall 31, of the refrigerator body 10 relative to the door body 30.

[0629] According to the relativity of the movement, taking the refrigerator body 10 as a reference, during the process of opening the door body 30 from the closed state to the fourth angle G 4 , the door body 30 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 33 and directed towards the side of the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0630] In some embodiments of the present disclosure, in combination with the manner 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, the above first stage can be divided into a first sub-stage and a second sub-stage.

[0631] For example, in the first sub-stage, the door body 30 is opened from the closed state to the second angle G 2 , and 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. The second central axis Q performs a curvilinear movement from the starting direction-guiding point Q 0 along the direction-guiding trajectory line in a direction getting closer to the door rear wall 33 and the door side wall 32.

[0632] 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. The second central axis Q performs a curvilinear movement from the starting direction-guiding point Q 0 along the direction-guiding trajectory line in a direction getting closer to the door rear wall 33 and the door side wall 32.

[0633] The relative movement situations in the above first sub-stage and the second sub-stage are the same as those in the process of opening the door body 30 from the closed state to the fourth angle G 4 , which will not be repeated here.

[0634] (2) The second stage, with reference to FIGS. 10 to 12, as shown in FIGS. 20 to 22, 25 and 26, is a process in which the door body 30 is rotated from G 4 to open to G 6 .

[0635] In this second stage, the door body 30 is opened from G 4 through G 5 to G 6 . During this process, the first central axis P moves from the fourth guide point P 4 along the guide trajectory line S in a direction getting closer to the door front wall 31 and the door side wall 32. The second central axis Q moves from the fourth direction-guiding point Q 4 along the direction-guiding trajectory line in a direction getting closer to the door rear wall 33 and the door side wall 32.

[0636] 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 . 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 .

[0637] 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 / the door body 30) as a reference object.

[0638] 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 motion trend of the axial midpoint I as the axial line segment PQ moves is I 4 → I 5 → I 6 .

[0639] In some embodiments of the present disclosure, 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 center point I and the door front wall 31 is the largest.

[0640] In some embodiments of the present disclosure, G 4 < G 5 < G' < G 6 . That is, before the second central axis Q moves to the sixth direction-guiding point Q 6 , which is the point 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.

[0641] 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 6 .

[0642] Since the guide portion 50 and the direction-guiding portion 60 are provided on the door body 30, and the axial line segment PQ represents the movement of the hinge plate 40 provided on the refrigerator body 10, it is 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 certain 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 certain distance in a direction getting closer to the door side wall 32 and getting away from the door rear wall 33.

[0643] 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 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 directed towards the side of the door side wall 32, and a displacement parallel to the door side wall 33 and directed towards the side away from the door front wall 31, of the refrigerator body 10 relative to the door body 30.

[0644] 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 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 directed towards the side of the door side wall 32, and a displacement parallel to the door side wall 33 and directed towards the side of the door front wall 31, of the refrigerator body 10 relative to the door body 30.

[0645] According to the relativity of the movement, taking the refrigerator body 10 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 door body 30 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 33 and directed towards the side of the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0646] During the process of opening the door body 30 from the direction-altering angle G' to the sixth angle G 6 , there are 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 33 and directed towards the side away from the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0647] In some embodiments of the present disclosure, 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. During the specific movement process of the door body 30, reference is made 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 will not be repeated here.

[0648] (3) The third stage, with reference to FIGS. 12 to 14, as shown in FIGS. 22 to 24 and 27, is a process in which the door body 30 is rotated from G 6 to open to G max .

[0649] During the process of opening the door body 30 from G 6 to G max , 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. The second central axis Q moves from the sixth direction-guiding point Q 6 along the direction-guiding trajectory line in a direction getting closer to the door front wall 31 and the door side wall 32.

[0650] 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 . 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 .

[0651] In the opening process of the third stage described above, descriptions will be made by using the second hinge member (the guide portion 50 / the direction-guiding portion 60 / the door body 30) as a reference object.

[0652] 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 . Where, 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.

[0653] In some embodiments of the present disclosure, since the guide portion 50 and the direction-guiding portion 60 are provided on the door body 30, and the axial line segment PQ represents the movement of the hinge plate 40 provided on the refrigerator body 10, it is 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 certain distance in a direction getting closer to the door side wall 32 and the door front wall 31.

[0654] In summary, during the process of opening the door body 30 from the sixth angle G 6 to the the maximum angle G max (the eighth angle G 8 ), taking the door body 30 (the guide groove / the direction-guiding groove) as a reference object, the refrigerator body 10 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 directed towards the side of the door side wall 32, and a displacement parallel to the door side wall 33 and directed towards the side of the door front wall 31, of the refrigerator body 10 relative to the door body 30.

[0655] According to the relativity of the movement, taking the refrigerator body 10 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 door body 30 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 33 and directed towards the side away from the door front wall 31, of the door body 30 relative to the refrigerator body 10.

[0656] 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 component of this translational movement includes a displacement component parallel to the door rear wall 33 and a displacement component parallel to the door side wall 32. Among them, 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.

[0657] In the above first stage (during the process of opening the door body 30 from the closed state 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 is oriented towards the side away from the door side wall 32, and the second direction displacement S 2 is oriented towards the side of the door front wall 31.

[0658] 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 is oriented towards the side away from the door side wall 32, and the second direction displacement S 2 is oriented towards the side away from the door front wall 31.

[0659] That is, during the process of opening the door body 30 from the closed state to the direction-altering angle G', the first direction displacement S 1 is oriented towards the side away from the door side wall 32, and the second direction displacement S 2 is oriented towards the side of the door front wall 31.

[0660] 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 is oriented towards the side away from the door side wall 32, and the second direction displacement S 2 is oriented towards the side away from the door front wall 31. Where the direction-altering angle G' < 90°.

[0661] 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.

[0662] 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.

[0663] 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.

[0664] 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.

[0665] 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, they are used to explain the instantaneous relative translational movement trend between the refrigerator body 10 and the door body 30.

[0666] 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. 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.

[0667] In some embodiments of the present disclosure, 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 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 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, then there is A 0 = A 1 + A 2 > 0, B 0 = B 1 + B 2 > 0.

[0668] During the whole process of opening the door body 30 from the closed state to the maximum angle G max (the eighth angle 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. 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 whole process of opening the door body 30 from the closed state to the maximum angle G max (the eighth angle 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. (1) As shown in FIGS. 28 to 31, during the process of opening the door body 30 from the closed state to 90°, in the process in which the door body 30 rotates counterclockwise to open relative to the refrigerator body 10, 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). 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.

[0669] During the above opening process (opening from the closed state to 90°), the side door 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 closed state 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 closed state 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.

[0670] (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 closed state to the direction-altering angle G' (G' < 90°), it can be seen that: during the process of opening the door body 30 from the closed state to the direction-altering angle G', taking the refrigerator body 10 as a reference, 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 of the door front wall 31. That is, the first direction displacement S 1 is oriented towards the inner front side (inward and forward side) of the refrigerator body 10, and the second direction displacement S 2 is oriented towards the outer front side (outward and forward side) of the refrigerator body 10.

[0671] As shown in FIGS. 28 to 29, in the displacement coordinate system AOB, during the process of opening the door body 30 from the closed state to the direction-altering angle G' (G' < 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 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. Where, 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. That is, during the process of opening the door body 30 from the closed state 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 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 closed state to G' (G' < 90°), the door body 30 has a movement tendency to translate inward and forward while rotating and opening relative to the refrigerator body 10.

[0672] In the above, during the process of opening the door body 30 from the closed state 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 lateral edge W exceeds the reference plane M 0 , and the situation where when the door body 30 is to be opened, the door body 30 cannot continue to be opened due to interference between the first side edge W and the housing cabinet 100, is avoided efficiently. 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.

[0673] (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 G 7 = 90° (G< G 7 = 90°), it can be seen that: during the process of opening the door body 30 from the direction-altering angle G' to G 7 = 90°, taking the refrigerator body 10 as a reference, 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 is oriented towards the inner front side (inward and forward side) of the refrigerator body 10, and the second direction displacement S 2 is oriented towards the inner rear side (inward and rearward side) of the refrigerator body 10.

[0674] As shown in 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 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 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. Where, 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 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 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 G 7 = 90°, the door body 30 has a movement tendency to translate inward and forward while rotating and opening relative to the refrigerator body 10.

[0675] (2) As shown in FIG. 9, when the door body 30 is opened to 90°, the door side wall 33 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.

[0676] The displacement direction of the door body 30 relative to the refrigerator body 10 during the opening of the door body 30 will be described. It is concluded from the above that, when the door body 30 is opened to 90°, taking the box 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 is oriented towards the front side of the refrigerator body 10, and the second direction displacement S 2 is oriented towards the inner side of the refrigerator body 10.

[0677] As shown in 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 is oriented towards the positive direction of the B axis, and the second direction displacement S 2 thereof is along the A axis and is oriented 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 0 = S 1 > 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 2 = 0. Where, A 0 = A 1 + A 2 = S 2 < 0, B 0 = B 1 + 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 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 has a movement tendency to translate inward and forward while rotating and opening relative to the refrigerator body 10.

[0678] In conclusion, during the process of opening the door body 30 from the closed state to 90°, the door body 30 keeps a movement tendency to translate inward and forward throughout the process while rotating to open.

[0679] In some embodiments of the present disclosure, during the process of opening the door body 30 from the closed state 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 (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.

[0680] (3) As shown in FIGS. 9 to 12, during the process in which the door body 30 rotates from 90° to open to G 8 (Gs > 90°), in the process in which the door body 30 rotates counterclockwise relative to the refrigerator body 10, 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.

[0681] During the above opening process, the side door 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 in which the door body 30 rotates from 90° to open to G 8 , relative to the refrigerator body 10, the door side wall 32 extends oriented 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. At the same time, 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 in which the door body 30 rotates from 90° to open to G 8 , relative to the refrigerator body 10, the door rear wall 33 extends in a direction pointing from the door side wall 32 towards being away from the second body side wall and the access opening, and 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.

[0682] During the process in which the door body 30 rotates from 90° to open to G 8 (Gs > 90°), taking the box 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 is oriented towards the outer front side (outward and forward side) of the refrigerator body 10, and the second direction displacement S 2 is oriented towards the inner front side (inward and frontward side) of the refrigerator body 10.

[0683] As shown in 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 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. Where, 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 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. 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.

[0684] In conclusion, during the entire process of opening the door body 30 from the closed state to G 8 (Gs > 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.

[0685] Although the current double-shaft and double-groove cooperating structures 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.

[0686] 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. Where, 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'. Limited by CN115682517A in which the guide trajectory line is a standard circular arc, and the direction-guiding trajectory line is limited by a structure formed by connecting two standard circular arcs. 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°.

[0687] 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 along the A axis is A 2 , and the component displacement of the second direction displacement along the B axis is B 2 .

[0688] Where, referring to FIG. 34, during the process of opening the door body from 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.

[0689] When the door body is opened to 90°, as shown in FIG. 34(c), 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.

[0690] During the process of opening the door body from 90° to G', as shown in FIG. 34(d), A 1 >, B 1 > 0; A 2 > 0, B 2 < 0; A 0 = A 1 + A 2 > 0, and B 0 = B 1 + B 2 > 0.

[0691] 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.

[0692] To sum up, 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.

[0693] 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 having the trajectory characteristics of some embodiments 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 its previous state. 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 lateral edge W exceeds the reference plane M 0 , and to effectively 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. The above door body 30 has a translational movement of an inward and forward movement while simply rotating to open, and the movement tendencies of the inward translation and the forward translation cooperatively function, to 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 (configurable, 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.

[0694] It is to be noted that, in the above descriptions, 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 they can represent the movement tendencies within the corresponding ranges, and can illustrate that the hinge assembly having 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.

[0695] To sum up, the hinge assembly having the trajectory characteristics in some embodiments 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 the trajectories (the guide trajectory line S and the direction-guiding trajectory line K) in some embodiments of the present disclosure are smooth and have no sharp points, thereby effectively ensuring the fluency and stability of opening of the door body 30.

[0696] In combination with the foregoing descriptions of the opening process of the door body 30, next, a position of the door body 30 at which the door body 30 is rotated 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 compared with a position of the door body 30 at which the door body 30 is in the aforementioned adjacent latter state (φ i+1 ), to illustrate the translational movement tendency of the door body 30 with respect to its previous state while performing the rotating movement during the opening of the door body 30 under the configuration of the hinge assembly having the trajectory characteristics of the present disclosure.

[0697] With reference 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. The second side edge N is located at N' with respect to the refrigerator body 10. The side seal edge F is located at F' with respect to the refrigerator body 10.

[0698] As shown in 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 around the midpoint I (I 0 ) of the axial line segment PQ of the door body 30 from when the door body 30 is closed. 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 around the axial midpoint I (the axial midpoint I (I 1 ) of the previous state) of the door body 30 from when the door body 30 is at the first angle G 1 . 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. 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 of the present disclosure and then the door body 30 simply rotates to the (i+1)-th angle φ i+1 around the axial midpoint I (the axial midpoint I (I i ) of the previous state) of the door body 30 from when the door body 30 is at the i-th angle φ i . 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. Where i belongs to any value of 0 to 7, and i is an integer.

[0699] It should be noted that 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 it 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.

[0700] 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 seen that:

[0701] During the process of opening the door body 30 from the closed state to 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. The position N where the second side edge is located is always located at the side of the N' close to the second body side wall and away from the access opening. The position F where the side seal edge is located is always located at the side of the 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 closed state to G max , the door body 30 has a tendency to move inward and forward while rotating to open.

[0702] As shown in 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 having 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.

[0703] 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 closed state 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. Where φ i and φ (i+1) each belong to any value of 0° to G max , and φ (i+1) > φ i .

[0704] Where 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) , where Δφ approaches 0 infinitely.

[0705] The above position comparison method is equally applicable to the second side edge, the side seal edge, and other points of the door body 30. Through the comparison, it can be known that, during the process of opening the door body 30 from the closed state to G max , the door body 30 has a tendency to move inward and forward while rotating to open.

[0706] 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 trend between two adjacent states is to be determined, where Δφ approaches 0 infinitely.

[0707] In some embodiments of the present disclosure, the direction-altering angle G' is greater than 45° and less than or equal to 90°.

[0708] As a configurable manner, the direction-altering angle G' belongs to any value of 75° to 80°.

[0709] As a configurable manner, the direction-altering angle G' belongs to any value of 80° to 85°.

[0710] The configuration of the hinge assembly having the above trajectory characteristics enables that, during the process of opening the door body 30 from the closed state 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 accelerate the inward movement distance of the door body 30 faster and more, 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°.

[0711] In addition, in the configuration of the hinge assembly having the above trajectory characteristics, during the process of opening the door body 30 from the closed state 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, which 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 is effectively reduced.

[0712] 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.

[0713] In some embodiments of the present disclosure, the direction-altering angle G' = 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'.

[0714] Under the configuration characteristic that the direction-altering angle G' = G 7 = 90°, during the process of opening the door body 30 from the closed state 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, and the specific process of the moving of the door body 30 is the same as the process of opening from the closed state to G' (G' < 90°) described above. 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. Where, 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. That is, during the process of opening the door body 30 from the closed state 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 closed state 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.

[0715] Under the configuration characteristics of the direction-altering angle G' = 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. Where, 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 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.

[0716] 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 G 7 = 90° (G' < G 7 = 90°) (as shown in FIG. 32).

[0717] In some embodiments of the present disclosure, G' = G 6 = G 7 = 90°.

[0718] 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 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. Where, 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.

[0719] Where, 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 chances 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).

[0720] In some embodiments of the present disclosure, 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.

[0721] Under the configuration in which the direction-altering angle G' is an acute angle, the movement tendency of the axial midpoint I is as follows: During the process of opening the door body 30 from the closed state 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'.

[0722] 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.

[0723] In some embodiments of the present disclosure, 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: During the process of opening the door body 30 from the closed state 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' .

[0724] 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.

[0725] In some embodiments of the present disclosure, 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.

[0726] In some embodiments of the present disclosure, when the opening angle of the door body 30 is φ, 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. Where φ belongs to any value of 0° to G max .

[0727] That is, during the process of opening the door body 30 from the closed state 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, 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.

[0728] 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.

[0729] When the opening angle of the door body 30 is φ, 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. Where φ belongs to any value of 0° to G max .

[0730] That is, during the process of opening the door body 30 from the closed state 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.

[0731] In some embodiments of the present disclosure, 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.

[0732] 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.

[0733] 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. Where φ belongs to any value of 0° to G max .

[0734] 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.

[0735] In some embodiments of the present disclosure, 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 .

[0736] In some embodiments of the present disclosure, the first instantaneous displacement H 1φ is oriented toward the plane where the first body side wall and the access opening are located.

[0737] In some embodiments of the present disclosure, the second instantaneous displacement H 2φ is oriented toward the plane where the first body side wall and the access opening are located.

[0738] Where φ belongs to any value of 0° to G 8 .

[0739] In some embodiments of the present disclosure, 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. 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.

[0740] Where, the guide portion 50 has a first guide boundary line, and the direction-guiding portion 60 has a first direction-guiding boundary line.

[0741] Where, 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.

[0742] In some embodiments of the present disclosure, the radius of the first shaft 41 is denoted as a first radius R 1 , 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 .

[0743] In some embodiments of the present disclosure, the first guide boundary line is located at the side of the guide trajectory line S away from the door front wall 31.

[0744] In some embodiments of the present disclosure, 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.

[0745] In some embodiments of the present disclosure, the first guide boundary line is located at the side of the guide trajectory line S close to the door front wall 31.

[0746] In some embodiments of the present disclosure, 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.

[0747] In some embodiments of the present disclosure, the first guide boundary line is located at the side of the guide trajectory line S close to the door front wall 31, and at the same time, 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.

[0748] In some embodiments of the present disclosure, the first guide boundary line is located at the side of the guide trajectory line S away from the door front wall 31, and at the same time, 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.

[0749] A kind of 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 of the perpendicular P ⊥φ . 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 of the perpendicular P ⊥φ , are located is denoted as a first guide direction line. Where the first instantaneous displacement H 1φ is along the first guide direction line and is oriented towards the plane where the first body side wall and the access opening are located.

[0750] 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 of the perpendicular 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 of the perpendicular Q ⊥φ are located is denoted as a first direction-guiding direction line. Where the second instantaneous displacement H 2φ is along the first guide direction line and is oriented towards the plane where the first body side wall and the access opening are located.

[0751] 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.

[0752] It is to be noted that, in a case where the guide portion 50 is provided in a structure form of a guide groove and the direction-guiding portion 60 is provided in a structure form of 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 specific method is as follows: 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.

[0753] 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.

[0754] Configurable, 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.

[0755] Another kind of definitions of the first instantaneous displacement H 1φ and the second instantaneous displacement H 2φ can be 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 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. Where the first instantaneous displacement H 1φ is along the first guide displacement line and is oriented towards the plane where the first body side wall and the access opening are located.

[0756] 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. Where the second instantaneous displacement H 2φ is along the first direction-guiding displacement line and is oriented towards the plane where the first body side wall and the access opening are located.

[0757] 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.

[0758] It is to be noted that, when the guide portion 50 is provided in a structure form of a guide groove and the direction-guiding portion 60 is provided in a structure form of 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 specific method is as follows: 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 H 1φ is determined from the first guide displacement line.

[0759] 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 H 2φ is determined from the first direction-guiding displacement line.

[0760] Configurable, 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.

[0761] In some embodiments of the present disclosure, 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. Where φ belongs to any value of 0° to G 8 (G max ).

[0762] That is, during the process of opening the door body 30 from the closed state 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, 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.

[0763] In some embodiments of the present disclosure, 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 .

[0764] Where the instantaneous midpoint displacement H 1φ is oriented toward the plane where the first body side wall and the access opening are located. Where 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.

[0765] 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. Where 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.

[0766] In some embodiments of the present disclosure, 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 |'. Where, |I 0 I'|': |I'I 8 |' belongs to any one of the values 1 to 3.

[0767] In some embodiments of the present disclosure, 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 . Where, F' I2 > 0 > F' I1 , 1 > F' I2 > |F' I1 | > 0.

[0768] In some embodiments of the present disclosure, 0.8 > F' I2 > |F' I1 | > 0.

[0769] In some embodiments of the present disclosure, 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.

[0770] In some embodiments of the present disclosure, 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.

[0771] In some embodiments of the present disclosure, the direction-altering midpoint I' is close to the straight line P 4 Q 6 .

[0772] In some embodiments of the present disclosure, the distance between the direction-altering midpoint I' and the straight line P 4 Q 6 is less than or equal to 1 mm.

[0773] In some embodiments of the present disclosure, 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 .

[0774] In some embodiments of the present disclosure, the second included angle σ 2 = ∠I'P 4 Q 6 belongs to any value of 6° to 8°.

[0775] In some embodiments of the present disclosure, the third included angle σ 3 = ∠I'Q 6 P 4 belongs to any value of 4° to 6°.

[0776] In some embodiments of the present disclosure, ∠Q 6 I'P 4 belongs to any value of 168° to 170°.

[0777] In some embodiments of the present disclosure, the foot of the perpendicular of the ΔI'Q 6 P 4 passing through the direction-altering midpoint I' and having a height on the edge Q 6 P 4 is denoted as I" (not shown in the figures). Where, the length of the line segment Q6I" is denoted as |Q6I''|, the length of the line segment I"P4 is denoted as |I''P4|, and |Q6I''|:|I''P4| belongs to any value of 1 to 2.

[0778] In some embodiments of the present disclosure, the direction-altering midpoint I', the fourth guide point P 4 , and the sixth direction-guiding point Q 6 are collinear.

[0779] In some embodiments of the present disclosure, 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, and the straight line P 4 Q 6 is approximately perpendicular to the door front wall 31. 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 they are located is approximately perpendicular to the door front wall 31.

[0780] In some embodiments of the present disclosure, 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 they are located is approximately parallel to the door side wall 32. Where, the approximately parallel to includes the case where the included angle between the two are less than or equal to 1°.

[0781] In some embodiments of the present disclosure, with combining reference to FIG. 5, as shown in FIGS. 16 and 44, the axial midpoint trajectory line formed by the door body 30 opening from the closed state to G 8 has two intersection points with the midplane C. Where, the axial midpoint trajectory line includes a first axial midpoint trajectory segment and a second 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 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.

[0782] In some embodiments of the present disclosure, during the entire process of opening the door body 30 from the closed state to the maximum angle G max (the eighth angle G 8 ), the axial midpoint I first 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, and passes through the midplane C during that moving process. Then the axial midpoint I moves toward 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.

[0783] The first axial midpoint trajectory segment intersects the midplane C at the first intersection point I 1 ', and the second axial midpoint trajectory segment intersects the midplane C at the second intersection point I 2 '.

[0784] 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.

[0785] 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 .

[0786] In some embodiments of the present disclosure, 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.

[0787] In some embodiments of the present disclosure, τ 2 :τ 1 belongs to any value of 3 to 4.

[0788] In some embodiments of the present disclosure, τ 3 :τ 1 belongs to any value of 1 to 2.

[0789] In some embodiments of the present disclosure, G':Gs belongs to any value of 0.6 to 0.75.

[0790] In some embodiments of the present disclosure, 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.

[0791] 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. Where, G 1 ' < G 2 '.

[0792] 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.

[0793] During the process of opening the door body 30 from the closed state 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.

[0794] In some embodiments of the present disclosure, G 1 ':G' belongs to any value of 0.4 to 0.6.

[0795] In some embodiments of the present disclosure, G':Gs belongs to any value of 0.6 to 0.75.

[0796] In some embodiments of the present disclosure, 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 .

[0797] 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 ).

[0798] In some embodiments of the present disclosure, 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.

[0799] Where, configurable, the distance between the axial midpoint I and the midplane C is less than 3 mm.

[0800] 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 of opening of the door body 30.

[0801] In some embodiments of the present disclosure, G 3 ':G 8 belongs to any value of 0.16 to 0.2.

[0802] In some embodiments of the present disclosure, G 3 ':G' belongs to any value of 0.24 to 0.3.

[0803] During the process of opening the door body 30 from the closed state to G 8 , in most (0.8 ~ 0.94) of the process, the axial midpoint I is located close to the midplane C of the door body 30, which increases the stability of the opening of the door body 30.

[0804] In some embodiments of the present disclosure, 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 force receiving condition of the door body 30 during the opening process of the door body 30 is better, and the stability of the opening of the door body 30 is improved.

[0805] In some embodiments of the present disclosure, 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.

[0806] During the process of ...

Claims

1. A refrigerator, comprising: a refrigerator body defining a storage compartment having an access opening; the refrigerator body comprises a first body side-wall and a second body side-wall disposed opposite to each other; a door body having a door front-wall that is remote from the refrigerator body when the door body is closed, and a door side-wall that is close to the first body side-wall and is 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 that is connected to the refrigerator body and is close to the first body side-wall, and an extension portion extending forwardly from the connection portion; a first shaft and a second shaft, disposed on the extension portion; and a guide portion and a direction-guiding portion, both provided on the door body and close to the door side-wall; the first shaft cooperates with the guide portion, and the second shaft cooperates with the direction-guiding portion; wherein the guide portion has a guide trajectory line; the guide trajectory line starts from a starting guide point P0 at one end of the guide portion that is 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 till an eighth guide point P8 at one end of the guide portion that is close to the door side-wall; wherein the direction-guiding portion has a direction-guiding trajectory line; the direction-guiding trajectory line starts from a starting direction-guiding point Q0 at one end of the direction-guiding portion that is 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 till an eighth direction-guiding point Q8 at one end of the direction-guiding portion that is close to the door side-wall; when the door body is opened to 90°, a central axis of the first shaft is moved to a seventh guide point P7 of the guide trajectory line, and a central axis of the second shaft is moved to a seventh direction-guiding point Q7 of the guide trajectory line; when the door body is opened to an eighth angle G8, the central axis of the first shaft is moved to the eighth guide point P8 of the guide trajectory line, and the central axis of the second shaft is moved to the eighth direction-guiding point Q8 of the guide trajectory line; wherein Gs is an obtuse angle; a straight line where the seventh guide point P7 and the eighth guide point P8 are located is denoted as a straight line P7P8, and an included angle between the straight line P7P8 and the door side-wall is denoted as a guide side inclined angle µ'P; a straight line where the seventh direction-guiding point Q7 and the seventh guide point P7 are located is denoted as a straight line P7Q7, and an included angle between the straight line P7Q7 and the door side-wall is denoted as a first side inclined angle µ'PQ; wherein the guide side inclined angle µ'P belongs to any value of 11° to 15°, and the first side inclined angle µ'PQ belongs to any value of 10° to 20°; during a process in which the door body is opened from a closed state, the first shaft moves with respect to the guide portion, and the second shaft moves with respect to the direction-guiding portion.

2. The refrigerator according to claim 1, wherein, on an end of the direction-guiding portion away from the door side-wall, a point having a minimum distance from the door front-wall is denoted as a first direction-guiding boundary point H1, on an end of the guide portion close to the door side-wall, a point having a minimum distance from the door front-wall is denoted as a second direction-guiding boundary point Hz, and on the guide portion, a point having a maximum distance from the door front-wall is denoted as a third direction-guiding boundary point H3; a straight line passing through the third direction-guiding boundary point H3 and being perpendicular to a straight line H1H2 is denoted as a second straight line χ2, and the second straight line χ2 intersects with the straight line H1H2 at a second foot of the perpendicular Hc; and the second foot of the perpendicular HC is on a line segment H1H2; and a length of the line segment H1H2 is denoted as |H1HC|, a length of a line segment HCH2 is denoted as|HCH2|; and a ratio of |H1HC| to |HCH2| belongs to any value of 4 to 10.

3. The refrigerator according to claim 2, wherein, on an end of the guide portion away from the door side-wall, a point having a minimum distance from the door front-wall is denoted as a first guide boundary point Z1, on an end of the guide portion close to the door side-wall, a point having a minimum distance from the door front-wall is denoted as a second guide boundary point Z2, and on the guide portion, a point having a maximum distance from the door front-wall is denoted as a third guide boundary point Z3; a straight line where the first guide boundary point Z1 and the second guide boundary point Z2 are located is denoted as a straight line Z1Z2, and an included angle between the straight line Z1Z2 and the door front-wall is denoted as a third guide front angle ΩP3; wherein ∠Z1Z3Z2 belongs to any value of 62° to 70°, and the third guide front angle ΩP3 belongs to any value of 10° to 21°.

4. The refrigerator according to claim 3, wherein a straight line passing through the third guide boundary point Z3 and being perpendicular to the straight line Z1Z2 is denoted as a first straight line χ1, and the first straight line χ1 intersects with the straight line Z1Z2 at a first foot of the perpendicular Zc; and the first foot of the perpendicular Zc is on a line segment Z1Z2; and a length of a line segment Z1ZC is denoted as |Z1ZC|, a length of a line segment ZCZ2 is denoted as |ZCZ2|, and a ratio of |Z1ZC| to |ZCZ2| belongs to any value of 0.4 to 1.

5. The refrigerator according to claim 4, wherein, a length of a line segment Z3ZC is denoted as |Z3ZC|, a length of the line segment Z1Z2 is denoted as |Z1Z2|, and a ratio of |Z3ZC| to |Z1Z2| belongs to any value of 0.4 to 0.8.

6. The refrigerator according to any one of claims 3 to 5, wherein a length of a line segment Z1Z2 is denoted as |Z1Z2|, and |Z1Z2| belongs to any value of 8 mm to 14 mm.

7. The refrigerator according to claim 6, wherein, in a projection on a plane where a top-wall of the refrigerator body is located, a distance between the first guide boundary point Z1 and the door front-wall is denoted as a first guide front distance DP1, a distance between the second guide boundary point Z2 and the door front-wall is denoted as a second guide front distance DP2, and a distance between the third guide boundary point Z3 and the door front-wall is denoted as a third guide front distance DP3; and wherein |DP1-DP2| belongs to any value of 2 mm to 6 mm; and DP3-DP2 belongs to any value of 8 mm to 18 mm.

8. The refrigerator according to claim 3 or 4 or 5 or 7, wherein a straight line where the first direction-guiding boundary point H1 and the second direction-guiding boundary point H2 are located is denoted as a straight line H1H2; and wherein an included angle between the straight line Z1Z2 and the straight line H1H2 is denoted as a first relative angle δ1; and the first relative angle δ1 belongs to any value of 38° to 46°.

9. The refrigerator according to claim 3 or 4 or 5 or 7, wherein, in a projection on a plane where a top-wall of the refrigerator body is located, and in a direction perpendicular to the door side-wall, a distance between the first guide boundary point Z1 and the third guide boundary point Z3 is denoted as a first guide side spacing E'P1, and a distance between the third guide boundary point Z3 and the second guide boundary point Z2 is denoted as a second guide side spacing E'P2; and wherein E'P1:E'P2 belongs to any value of 1.3 to 3.

10. A refrigerator, comprising: a refrigerator body defining a storage compartment having an access opening; the refrigerator body comprises a first body side-wall and a second body side-wall disposed opposite to each other; a door body having a door front-wall that is remote from the refrigerator body when the door body is closed, and a door side-wall that is close to the first body side-wall and is 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 that is connected to the refrigerator body and is close to the first body side-wall, and an extension portion extending forwardly from the connection portion; a first shaft and a second shaft, disposed on the extension portion; and a guide portion and a direction-guiding portion, both provided on the door body and close to the door side-wall; the first shaft cooperates with the guide portion, and the second shaft cooperates with the direction-guiding portion; wherein the guide portion has a guide trajectory line; the guide trajectory line starts from a starting guide point P0 at one end of the guide portion that is 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 till an eighth guide point P8 at one end of the guide portion that is close to the door side-wall; wherein the direction-guiding portion has a direction-guiding trajectory line; the direction-guiding trajectory line starts from a starting direction-guiding point Q0 at one end of the direction-guiding portion that is 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 till an eighth direction-guiding point Q8 at one end of the direction-guiding portion that is close to the door side-wall; when the door body is opened to 90°, a central axis of the first shaft is moved to a seventh guide point P7 of the guide trajectory line, and a central axis of the second shaft is moved to a seventh direction-guiding point Q7 of the guide trajectory line; when the door body is opened to an eighth angle G8, the central axis of the first shaft is moved to the eighth guide point P8 of the guide trajectory line, and the central axis of the second shaft is moved to the eighth direction-guiding point Q8 of the guide trajectory line; wherein Gs is an obtuse angle; a straight line where the seventh guide point P7 and the eighth guide point P8 are located is denoted as a straight line P7P8, and an included angle between the straight line P7P8 and the door side-wall is denoted as a guide side inclined angle µ'P; a straight line where the seventh direction-guiding point Q7 and the seventh guide point P7 are located is denoted as a straight line P7Q7, and an included angle between the straight line P7Q7 and the door side-wall is denoted as a first side inclined angle µ'PQ; wherein the guide side inclined angle µ'P belongs to any value of 11° to 15°, and the first side inclined angle µ'PQ belongs to any value of 10° to 20°; during a process in which the door body is opened from a closed state, the first shaft moves in a direction getting closer to the door side-wall with respect to the guide portion, and the second shaft moves in a direction getting closer to the door side-wall with respect to the direction-guiding.

11. The refrigerator according to claim 10, wherein, on an end of the direction-guiding portion away from the door side-wall, a point having a minimum distance from the door front-wall is denoted as a first direction-guiding boundary point H1, on an end of the guide portion close to the door side-wall, a point having a minimum distance from the door front-wall is denoted as a second direction-guiding boundary point H2, and on the guide portion, a point having a maximum distance from the door front-wall is denoted as a third direction-guiding boundary point H3; a straight line passing through the third direction-guiding boundary point H3 and being perpendicular to a straight line H1H2 is denoted as a second straight line χ2, and the second straight line χ2intersects with the straight line H1H2 at a second foot of the perpendicular Hc; and the second foot of the perpendicular HC is on a line segment H1H2; and a length of the line segment H1HC is denoted as |H1HC|, a length of a line segment HCH2 is denoted as|HCH2|; and a ratio of |H1HC| to |HCH2| belongs to any value of 4 to 10.

12. The refrigerator according to claim 11, wherein, on an end of the guide portion away from the door side-wall, a point having a minimum distance from the door front-wall is denoted as a first guide boundary point Z1, on an end of the guide portion close to the door side-wall, a point having a minimum distance from the door front-wall is denoted as a second guide boundary point Z2, and on the guide portion, a point having a maximum distance from the door front-wall is denoted as a third guide boundary point Z3; a straight line where the first guide boundary point Z1 and the second guide boundary point Z2 are located is denoted as a straight line Z1Z2, and an included angle between the straight line Z1Z2 and the door front-wall is denoted as a third guide front angle ΩP3; wherein ∠Z1Z3Z2 belongs to any value of 62° to 70°, and the third guide front angle ΩP3 belongs to any value of 10° to 21°.

13. The refrigerator according to claim 12, wherein a straight line passing through the third guide boundary point Z3 and being perpendicular to the straight line Z1Z2 is denoted as a first straight line χ1, and the first straight line χ1 intersects with the straight line Z1Z2 at a first foot of the perpendicular Zc; and the first foot of the perpendicular Zc is on a line segment Z1Z2; and a length of a line segment Z1ZC is denoted as |Z1ZC|, a length of a line segment ZCZ2 is denoted as |ZCZ2|, and a ratio of |Z1ZC| to |ZCZ2| belongs to any value of 0.4 to 1.

14. The refrigerator according to claim 13, wherein, a length of a line segment Z3ZC is denoted as |Z3ZC|, a length of the line segment Z1Z2 is denoted as |Z1Z2|, and a ratio of |Z3ZC| to |Z1Z2| belongs to any value of 0.4 to 0.8.

15. The refrigerator according to any one of claims 12 to 14, wherein a length of a line segment Z1Z2 is denoted as |Z1Z2|, and |Z1Z2| belongs to any value of 8 mm to 14 mm.

16. The refrigerator according to claim 15, wherein, in a projection on a plane where a top-wall of the refrigerator body is located, a distance between the first guide boundary point Z1 and the door front-wall is denoted as a first guide front distance DP1, a distance between the second guide boundary point Z2 and the door front-wall is denoted as a second guide front distance DP2, and a distance between the third guide boundary point Z3 and the door front-wall is denoted as a third guide front distance DP3; and wherein |DP1-DP2| belongs to any value of 2 mm to 6 mm; and DP3-DP2 belongs to any value of 8 mm to 18 mm.

17. The refrigerator according to claim 12 or 13 or 14 or 16, wherein a straight line where the first direction-guiding boundary point H1 and the second direction-guiding boundary point H2 are located is denoted as a straight line H1H2; and wherein an included angle between the straight line Z1Z2 and the straight line H1H2 is denoted as a first relative angle δ1; and the first relative angle δ1 belongs to any value of 38° to 46°.

18. The refrigerator according to claim 12 or 13 or 14 or 16, wherein, in a projection on a plane where a top-wall of the refrigerator body is located, and in a direction perpendicular to the door side-wall, a distance between the first guide boundary point Z1 and the third guide boundary point Z3 is denoted as a first guide side spacing E'P1, and a distance between the third guide boundary point Z3 and the second guide boundary point Z2 is denoted as a second guide side spacing E'P2; and wherein E'P1:E'P2 belongs to any value of 1.3 to 3.

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