refrigerator

Abstract

A refrigerator is provided, the refrigerator comprising a box, a hinge assembly, a door, a flip beam and a guide block. The box includes a guide groove. The hinge assembly includes a first fitting portion. The door is connected to the box via the hinge assembly. The door includes a door side wall and a second fitting portion. The guide block fits into the guide groove. When the door is closed to a first critical angle, an elastic deformation amount of the second fitting portion reaches a predetermined threshold value, and a central axis of the first hinge shaft is located at a first contact positioning point on the straight line locus segment. When the door is closed to a second fitting angle, the guide block contacts the guide groove, and a central axis of the first hinge shaft is located at a second contact positioning point on the straight line locus segment. The first critical angle is equal to or larger than the second fitting angle. The second contact positioning point overlaps with a position of the first contact positioning point, or the second contact positioning point is farther from the door side wall than the first contact positioning point.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority from a Chinese patent application bearing application number 202210756766.7, filed on June 30, 2022, the entire disclosure of which is incorporated herein by reference.

[0002] The present disclosure relates to the technical field of domestic electrical equipment, and in particular to refrigerators. [Background technology]

[0003] In home life, refrigerators have become one of the necessary home appliances in every household. Due to the need for aesthetics and simplicity in the home, more and more consumers are choosing built-in refrigerators.

[0004] A built-in refrigerator is fitted into a matching cabinet, and a heat dissipation cycle is formed by the floor legs, back panel, and top panel, so a small gap can be left between the left and right side walls of the refrigerator and the inside walls of the cabinet. Summary of the Invention [Means for solving the problem]

[0005] A refrigerator is provided, comprising a box, a hinge assembly, a door, a flip beam, and a guide block. The box includes a first body side wall, a second body side wall, a storage compartment, and a guide groove. The first body side wall and the second body side wall are disposed opposite each other. The guide groove is disposed at the top of the storage compartment, and the hinge assembly is disposed on the box and close to the first body side wall. The hinge assembly includes a first locus groove, a second locus groove, a first hinge shaft, a second hinge shaft, and a first fitting portion. The center locus line of the first locus groove has a straight locus segment and a curved locus segment connected to each other, and the curved locus segment is located on a side of the straight locus segment closer to the door side wall. The first hinge shaft fits into the first locus groove and is movable relative to the first locus groove. The second hinge shaft fits into the second locus groove and is movable relative to the second locus groove. The door is connected to the box via the hinge assembly to open and close the storage box. The first and second track grooves are located at an end of the door closer to the hinge assembly. The door includes a door sidewall and a second mating portion. The door sidewall is a sidewall of the door closer to the hinge assembly. The second mating portion is locked or unlocked with the first mating portion. The flip beam is located on one of the two door bodies and is located at an end of the one door body closer to the other door body. The guide block is located at the top end of the flip beam. The guide block is fitted into the guide groove. When the door body is closed to a first critical angle, the elastic deformation of the second mating portion reaches a predetermined threshold, and the central axis of the first hinge shaft is located at a first contact positioning point on the straight-line trajectory segment. When the door is closed to a second mating angle, the guide block contacts the guide groove, and the central axis of the first hinge shaft is located at a second contact positioning point on the linear trajectory segment. The first critical angle is equal to or greater than the second mating angle. The second contact positioning point either coincides with the first contact positioning point or is farther from the door side wall than the first contact positioning point. [Brief explanation of the drawings]

[0006] In order to more clearly explain the technical aspects of the embodiments of the present disclosure, the drawings used in some embodiments of the present disclosure will be briefly described below. However, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings. Furthermore, the drawings described below can be considered as schematic diagrams, without any restrictions on the actual dimensions of products, the actual processes of methods, and the actual timing of signals according to the embodiments of the present disclosure. [Figure 1] FIG. 1 is a perspective view of a refrigerator according to some embodiments. [Figure 2] FIG. 1 is a plan view of some embodiments. [Figure 3] FIG. 1 is a structural schematic diagram of a hinge assembly of a refrigerator according to some embodiments. [Figure 4] FIG. 10 is an exploded view of a top right corner hinge assembly of a refrigerator in accordance with some embodiments. [Figure 5] FIG. 1 is a structural diagram of a hinge assembly when a door body is in a closed state in a refrigerator according to a first embodiment of the present invention. [Figure 6] FIG. 10 is a structural diagram of a hinge assembly when a door body is opened to φ=G1 in a refrigerator according to a first embodiment of some embodiments. [Figure 7] FIG. 10 is a structural diagram of a hinge assembly when a door body is opened to φ=G2 in a refrigerator according to a first embodiment of some embodiments. [Figure 8] FIG. 10 is a structural diagram of a hinge assembly when a door body is opened to φ=G3 in a refrigerator according to a first embodiment of some embodiments. [Figure 9] FIG. 10 is a structural diagram of a hinge assembly when a door body is opened to φ=G4 in a refrigerator according to a first embodiment of some embodiments. [Figure 10] FIG. 10 is a structural diagram of a hinge assembly when a door body is opened to φ=Gmax in a refrigerator according to a first embodiment of some embodiments. [Figure 11] 10 is a schematic diagram of the movement trajectories of the first side edge W and the second side edge N for the hinge assembly in Example 1 of the refrigerator according to some embodiments. FIG. [Figure 12] 10 is a diagram showing a movement state of a first hinge shaft relative to a first locus groove and a movement state of a second hinge shaft relative to a second locus groove in a refrigerator according to some embodiments; FIG. [Figure 13] FIG. 10 is a diagram showing the position of the first hinge shaft relative to the first locus groove and the position of the second hinge shaft relative to the second locus groove when the door body is opened to φ=G1 in Example 1 of the refrigerator according to some embodiments. [Figure 14] FIG. 10 is a diagram showing the position of the first hinge shaft relative to the first locus groove and the position of the second hinge shaft relative to the second locus groove when the door body is opened to φ=G2 in Example 1 of the refrigerator according to some embodiments. [Figure 15] FIG. 10 is a diagram showing the position of the first hinge shaft relative to the first locus groove and the position of the second hinge shaft relative to the second locus groove when the door body is opened to φ=G3 in Example 1 of the refrigerator according to some embodiments. [Figure 16] FIG. 10 is a diagram showing the position of the first hinge shaft relative to the first locus groove and the position of the second hinge shaft relative to the second locus groove when the door body is opened to φ=G4 in Example 1 of the refrigerator according to some embodiments. [Figure 17] FIG. 10 is a diagram showing the position of the first hinge shaft relative to the first locus groove and the position of the second hinge shaft relative to the second locus groove when the door body is opened to φ=Gmax in Example 1 of the refrigerator according to some embodiments. [Figure 18] FIG. 10 is a diagram illustrating a fitting relationship between a first hinge shaft and a first locus groove in a refrigerator according to some embodiments. [Figure 19] FIG. 10 is a diagram showing a fitting relationship between a second hinge shaft and a second locus groove in a refrigerator according to a first embodiment of some embodiments. [Figure 20] 1 is a partial view of a refrigerator according to a first embodiment when a door body is in a closed state. [Figure 21] FIG. 1 is a partial view of a refrigerator according to a first embodiment when the door body is opened to a first opening angle s. [Figure 22] FIG. 10 is a partial view of a door body up to a third opening angle t in a refrigerator according to a first embodiment of some embodiments. [Figure 23] FIG. 1 is a partial view of a refrigerator according to a first embodiment of some embodiments when the door body is opened to a maximum angle t. [Figure 24] FIG. 10 is a diagram illustrating a movement state of a roll along a convex curve in Example 2 of a refrigerator according to some embodiments. [Figure 25] FIG. 10 is a diagram showing the position of the first hinge shaft relative to the first locus groove and the position of the second hinge shaft relative to the second locus groove when the door body is closed in Example 3 of the refrigerator according to some embodiments. [Figure 26] 10A and 10B are diagrams illustrating a movement state of a first hinge shaft relative to a first locus groove and a movement state of a second hinge shaft relative to a second locus groove in a refrigerator according to a third embodiment of some embodiments. [Figure 27] FIG. 10 is a diagram showing the position of the first hinge shaft relative to the first locus groove and the position of the second hinge shaft relative to the second locus groove in the process of closing the door body from φ=G0 in Example 3 of the refrigerator according to some embodiments. [Figure 28] FIG. 10 is a diagram showing the relative position of a flip beam and a box body when the door body is open in Example 4 of a refrigerator according to some embodiments. [Figure 29] FIG. 10 is a diagram illustrating the relative position between the flip beam and the box body when the door body is open in Example 4 of the refrigerator according to some embodiments, from another perspective. [Figure 30] FIG. 10 is a diagram showing a positional relationship of a first hinge shaft to a first locus groove and a positional relationship of a second hinge shaft to a second locus groove when a door body is closed in a refrigerator according to a fifth embodiment of some embodiments. [Figure 31] FIG. 10 is a diagram showing a positional relationship of a first hinge shaft to a first locus groove and a positional relationship of a second hinge shaft to a second locus groove when a door body presses a door seal in a refrigerator according to a fifth embodiment of some embodiments. [Figure 32] FIG. 10 is a diagram showing the positional relationship of the first hinge shaft with respect to the first locus groove and the positional relationship of the second hinge shaft with respect to the second locus groove when the door body in Example 5 of the refrigerator according to some embodiments continues to move in the closing direction from the closed state. [Figure 33]FIG. 10 is an exploded view of the upper end of the door body and the mounting block in Example 6 of the refrigerator according to some embodiments. [Figure 34] FIG. 10 is another exploded view of the door upper end and the mounting block in the refrigerator according to the sixth embodiment of some embodiments. [Figure 35] FIG. 10 is an exploded view of a lower end of a door body and a mounting block in a refrigerator according to a sixth embodiment of the present invention. [Figure 36] FIG. 10 is a diagram showing an assembly structure of a lower end of a door body and a mounting block in a refrigerator according to a sixth embodiment of the present invention. [Figure 37] FIG. 13 is a perspective view of the engagement between the hinge plate and the lock structure when the door body is in a closed state in a refrigerator according to a sixth embodiment of some embodiments. [Figure 38] FIG. 10 is a structural diagram of the engagement between the hinge plate and the lock structure when the door body is in the closed state in a refrigerator according to a sixth embodiment of some embodiments. [Figure 39] FIG. 13 is a perspective view of a hinge plate and a lock structure when a door body is open in a sixth embodiment of a refrigerator according to some embodiments. [Figure 40] FIG. 10 is a structural diagram of a hinge plate and a lock structure when the door body is open in Example 6 of a refrigerator according to some embodiments. [Figure 41] FIG. 13 is a perspective view of a hinge plate and a lock structure when a door body is opened to 90° in a refrigerator according to a sixth embodiment of some embodiments. [Figure 42] FIG. 10 is a structural diagram of a hinge plate and a lock structure when the door body is opened to 90° in a refrigerator according to a sixth embodiment of some embodiments. [Figure 43] FIG. 13 is a perspective view of a hinge plate and a lock structure when the door body is opened to the maximum angle in a refrigerator according to a sixth embodiment of some embodiments. [Figure 44] FIG. 10 is a structural diagram of a hinge plate and a lock structure when the door body is opened to the maximum angle in a refrigerator according to a sixth embodiment of some embodiments. [Figure 45]FIG. 10 is a diagram showing the relative positions of the first hinge shaft contacting the first locus groove and the second hinge shaft contacting the second locus groove when the door body is opened to the maximum angle in Example 7 of the refrigerator according to some embodiments. [Figure 46] FIG. 10 is a structural diagram of a first hinge shaft contacting the first locus groove and a second hinge shaft contacting the second locus groove when the door body is opened to the maximum angle in Example 7 of a refrigerator according to some embodiments. [Figure 47] FIG. 10 is an exploded view of the upper end of the door body and the mounting block in Example 9 of the refrigerator according to some embodiments. [Figure 48] FIG. 10 is a diagram showing an assembly structure of the upper end of the door body and the mounting block in Example 9 of the refrigerator according to some embodiments. [Figure 49] FIG. 10 is a diagram showing the assembly structure of the upper end of the door body and the mounting block at another viewing angle in Example 9 of the refrigerator according to some embodiments. [Figure 50] FIG. 10 is an exploded view of the upper end of the door body and the mounting block in Example 9 of the refrigerator according to some embodiments. [Figure 51] FIG. 10 is a diagram showing the assembly structure of the lower end of the door body, the track block, and the lock block in Example 9 of the refrigerator according to some embodiments. [Figure 52] This is a structural diagram of the lower end of the door body, the track block, and the lock block when the door body is closed to GB1 in Example 10 of the refrigerator according to some embodiments. [Figure 53] This is a structural diagram of the door body, track block, and lock block when the door body is closed to GS in Example 10 of the refrigerator according to some embodiments. [Figure 54] This is a structural diagram of the relative positions of the door body, track block, and guide groove when the door body is closed to the GF in Example 10 of the refrigerator according to some embodiments. [Figure 55] FIG. 13 is a diagram showing the state of the lock hook, the stopper portion, and the guide block and the guide groove when GB1 is larger than GS (GB1>GS) in Example 10 of the refrigerator according to some embodiments. [Figure 56]A diagram showing the state of the hook and stopper part when GB1 is less than GF (GB1 < GF) in Example 10 of a refrigerator according to some embodiments, and the state of the guide block and guide groove. [Figure 57] A diagram showing the state of the lock hook and stopper part when GB1 is equal to GF (GB1 = GF) in Example 10 of a refrigerator according to some embodiments, and the state of the guide block and guide groove. [Figure 58] A diagram showing the structure of the hinge when the door body is in the closed state in Example 11 of a refrigerator according to some embodiments. [Figure 59] A diagram showing the structure of the hinge when the door body is in the closed state and the first positioning point P1 is located on the side closer to the door side wall of the angle bisecting plane H in Example 11 of a refrigerator according to some embodiments. [Figure 60] A diagram showing the structure of the hinge when the door body is in the closed state and the first positioning point P1 is located on the side away from the door side wall of the angle bisecting plane H in Example 11 of a refrigerator according to some embodiments.

Modes for Carrying Out the Invention

[0007] Hereinafter, referring to the drawings, the invention in some embodiments of the present disclosure will be clearly and completely described. Of course, the embodiments described here are only a part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments conceivable to those skilled in the art shall be included within the scope of the present disclosure.

[0008] Unless the context indicates otherwise, in this specification and claims, the term "comprise" and other forms thereof, such as the third-person singular "comprises" and the present participle form "comprising," should be interpreted in an open, inclusive sense, i.e., "including, but not limited to." In the description, the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," "some examples," and the like, are intended to indicate that a particular feature, structure, material, or characteristic associated with this embodiment or examples is included in at least one embodiment or example of the present disclosure. General references to the above terms do not necessarily refer to the same embodiment or example. Furthermore, a described particular feature, structure, material, or characteristic may be included in any one or more embodiments or examples in any appropriate manner.

[0009] Hereinafter, the terms "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying the relative importance or quantity of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In describing the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0010] In describing some embodiments, the terms "coupled," "connected," and derivatives thereof may be used. For example, in describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. Alternatively, in describing some embodiments, the term "coupled" may be used to indicate that two or more components are in direct physical or electrical contact with each other. However, the terms "coupled" or "communicatively coupled" may 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 of this specification.

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

[0012] "A and / or B" includes three combinations: A only, B only, and a combination of A and B.

[0013] In this specification, the use of "applied to" or "disposed to" is intended to be open and inclusive language and does not exclude devices adapted or arranged to perform additional tasks or steps.

[0014] Additionally, use of the term "based on" implies openness and inclusiveness, as a process, step, calculation, or other action based on one or more conditions or values ​​may in fact be based on additional conditions or beyond those values.

[0015] As used herein, "about," "approximately," or "approximate" includes the stated value and the mean within an acceptable range of deviation of the specified value, where the acceptable range of deviation is determined by one of ordinary skill in the art considering the measurement and the error associated with measuring the specified quantity (i.e., limitations of the measurement system).

[0016] implies openness and inclusiveness, since a process, step, calculation, or other action that is based on one or more conditions or values ​​may in fact be based on additional conditions or beyond those values.

[0017] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the side of a refrigerator facing a user during use is defined as the front side, and the side opposite to the front side is defined as the rear side.

[0018] Example 1

[0019] A first embodiment of the present disclosure provides a refrigerator 1. Referring to Fig. 1, the refrigerator 1 includes a box 10 having a storage compartment, a door 30 connected to the box 10 for opening and closing the storage compartment, and a cold air supply device for supplying cold air to the storage compartment. The box 10 includes a content container that defines the storage compartment, a housing connected to the outside of the content container to form the exterior of the refrigerator, and a heat insulating layer disposed between the content container and the housing to block heat transfer from the storage compartment.

[0020] The box 10 defines a plurality of storage compartments. In this embodiment, the plurality of storage compartments includes a refrigerator compartment and a freezer compartment located below the refrigerator compartment. However, the types and arrangement of the plurality of storage compartments of the refrigerator 1 are not limited to this.

[0021] An access opening is formed at the front end of the storage compartment, and a user can put food in or take food out of the storage compartment through this access opening. A rotatable door 30 is provided on the box 10 to open and close the access opening of the storage compartment. For example, the door 30 is rotatably connected to the box 10 by a hinge assembly located at the top of the refrigerator 1 and a hinge assembly located at the bottom of the refrigerator 1.

[0022] The box 10 includes a first body sidewall (i.e., one of the left and right sides of the box 10) and a second body sidewall (i.e., the other of the left and right sides of the box 10) that face each other. A hinge assembly is provided on the box 10 and is proximate to the first body sidewall.

[0023] The door body 30 has a door front wall 31 that is separated from the box body 10 when the door body 30 is closed, a door rear wall 33 that faces the door front wall 31, and a door side wall 32 that is connected to the door front wall 31 near the hinge assembly.

[0024] For example, when the hinge assembly is located on the right side of the box 10, the right side wall of the door body 30 is the door side wall 32. When the hinge assembly is located on the left side of the box 10, the left side wall of the door body 30 is the door side wall 32.

[0025] The door front wall 31 and door side wall 32 of the door body 30 intersect to form a first side edge W, and the door side wall 33 and door rear wall 33 intersect 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 that is away from the box body 10.

[0026] In addition, when the door front wall 31 and the door side wall 32 are both flat wall surfaces, the intersection line between the plane on which the door front wall 32 is located and the plane on which the door side wall 32 is located is theoretically the first side edge W. Due to the rounding transition at the intersection of the door front wall 31 and the door side wall 32, a curved surface extending along the height direction of the door body 30 (i.e., the up-and-down direction in FIG. 1 ) is formed. For convenience of explanation, any straight line extending along the height direction of the door body 30 on this curved surface represents the first side edge W. Similarly, due to the rounding transition at the intersection of the door rear wall 33 and the door side wall 32, the intersection line of the planes on which the door rear wall 33 and the door side wall 32 are located may represent the second side edge N, or a straight line close to the position of this intersection line and parallel to this intersection line may represent the second side edge N.

[0027] 2 and 3, a door seal 5 is provided on the rear wall of the door 30. When the door 30 is closed, the door seal 5 surrounds the access opening and is attached to the front end surface of the box 10, effectively sealing the connection between the door 30 and the box 10, ensuring that the door 30 seals the access opening and preventing cold air from leaking. For example, the door seal 5 is annular.

[0028] 2 to 4, the hinge assembly includes a first hinge shaft 41 (i.e., the main hinge shaft) and a second hinge shaft 42 (i.e., the sub-hinge shaft) located on the side where the first hinge rod 41 is away from the first body side wall. A first locus groove 50 and a second locus groove 60 are provided on the end of the door body 30 close to the hinge assembly. The first hinge shaft 41 fits into the first locus groove 50, and the second hinge shaft 42 fits into the second locus groove 60. When the door body 30 rotates to open or close, the first hinge shaft 41 moves relative to the first locus groove 50, and the second hinge shaft 42 moves relative to the second locus groove 60.

[0029] The hinge assembly includes a hinge plate 40 fixedly connected to the box body 10. The hinge plate 40 includes a first connection portion 401 connected to the box body 10, and an extension portion 402 having a horizontal plate shape and extending forward (i.e., in a predetermined direction) from the first connection portion 401. The first connection portion 401 may be connected to the box body 10 by a fastener such as a screw, a pin, or a bolt.

[0030] 4, for example, with respect to the hinge assembly located at the upper end of the door body 30, the hinge assembly includes a hinge plate 40 connected to the upper end of the box body 10, and a first hinge shaft 41 and a second hinge shaft 42 are connected to the hinge plate 40 to form a regulating shaft for guiding the movement of the door body 30. The hinge plate 40, the first hinge shaft 41, and the second hinge shaft 42 may be formed integrally, or may be provided separately and assembled to each other. Here, the first hinge shaft 41 and the second hinge shaft 42 are provided on an extension portion 402 and extend vertically downward.

[0031] The hinge assembly located at the lower end of the door body 30 has a first connection portion 401 connected to the front end surface of the box body 10. The first hinge shaft 41 and the second hinge shaft 42 are provided on the hinge plate 40 and extend vertically upward.

[0032] A first locus groove 50 and a second locus groove 60 are provided at both the upper and lower ends of the door body 30, corresponding to the positions of the hinge plates 40. For example, the two first locus grooves 50 located at the upper and lower ends of the door body 30 are positioned in a corresponding position in the height direction of the refrigerator 1, and the two second locus grooves 60 are positioned in a corresponding position in the height direction of the refrigerator 1, thereby ensuring that the upper and lower ends of the door body 30 move in unison, allowing the door body 30 to be opened and closed smoothly.

[0033] In this embodiment, continuing to refer to Figure 2, the plane on which the side wall of the box 10 closest to the hinge plate 40 (i.e., the first main body side wall) is located is defined as the reference plane M0. When the refrigerator 1 is stored in the cabinet 100, the side of the reference plane M0 closest to the cabinet 100 is defined as the outside, and the opposite side closer to the storage compartment is defined as the inside.

[0034] For example, when door body 30 is closed, the plane on which door front wall 31 is located is substantially flush with the plane on which the front end surface of cabinet 100 is located (i.e., the distance between the two planes is less than 2 mm). In order to place refrigerator 1 in cabinet 100 for use, a gap α is often left between cabinet 100 and the first main body side wall of refrigerator 1 (i.e., reference plane M0). For example, the width of gap α is within the range of 3 to 5 mm (i.e., α∈[3, 5]).

[0035] It is understood that in order to ensure that the door body 30 of the refrigerator 1 opens normally, the first side edge W must not exceed the reference plane M0 during the process of the door body 30 rotating, to avoid the first side edge W colliding with the cabinet 100 and preventing the door body 30 from opening normally.

[0036] In other words, if the door body 30 may move inward during rotation, the first side edge W does not exceed the reference plane M0. For example, if the hinge plate 40 is installed on the right side of the door body 30 and the inner side is on the left side of the reference plane M0, the door body 30 needs to move leftward during rotation. If the hinge plate 40 is installed on the left side of the door body 30 and the inner side is on the right side of the reference plane M0, the door body 30 needs to move rightward during rotation.

[0037] In this embodiment, as shown in FIG. 3, the first track groove 50 includes a straight groove segment and a curved groove segment that are connected to each other, and the straight groove segment is located on the side of the curved groove segment that is away from the door side wall 32.

[0038] For example, the straight groove segment extends toward the door side wall 32, one end of the curved groove segment is connected to the straight groove segment, and the other end of the curved groove segment extends toward the first side edge W. The curved groove segment protrudes toward the second side edge N. For example, the distance between the curved groove segment and the door side wall 32 gradually decreases along the direction from the rear door wall 33 toward the front door wall 31. In this way, during the opening process of the door body 30, the door body 30 rotates and first moves inward and then forward, thereby preventing interference between the door body 30 and the box body 100 and preventing the door body 30 from pushing out the door seal 5, thereby reducing wear on the door seal 5.

[0039] Illustratively, the straight groove segments are parallel to the door front wall 31 .

[0040] The central locus line of the first locus groove 50 is called the first locus line S, and the first locus groove 50 is defined by the shape of the first locus groove 50. The first locus line S includes a straight locus segment and a curved locus segment connected by a smooth transition. The straight locus segment extends in a direction approaching the door side wall 32, and the curved locus segment is located on the side of the straight locus segment closer to the door side wall 32 and protrudes in a direction approaching the second side edge N.

[0041] In this embodiment, the straight line trajectory segment is parallel to the door front wall 31, and the curved line trajectory segment is set to a perfect circular arc.

[0042] The second locus groove 60 is a curved groove. One end of the second locus groove 60 is farther from the door rear wall 33 and the door side wall 32 than the other end of the second locus groove 60. The second locus groove 60 protrudes in a direction approaching the door rear wall 33. The center locus line of the second locus groove 60 is written as the second locus line K. The second locus line K is defined by the shape of the second locus groove 60. The second locus line K has a curved shape and protrudes in a direction approaching the door rear wall 33.

[0043] For example, along the direction from the end away from the door side wall 32 toward the door side wall 31, the distance between the second locus line K and the door front wall 31 first increases and then decreases.

[0044] For example, by positioning the first locus groove 50 on the side of the second locus groove 60 closer to the door front wall 31 and the door side wall 32, the door body 30 can move inward a certain distance as it rotates, compensating for the outward displacement of the first side edge W due to the rotation of the door body 30. This reduces the distance by which the first side edge W exceeds the reference plane M0, and prevents interference between the first side edge W and the box body 100 when the door body 30 is open.

[0045] Since there is a relative motion relationship between the first locus groove 50 and the first hinge shaft 41, and between the second locus groove 60 and the second hinge shaft 42, when the first locus groove 50 and the second locus groove 60 are taken as stationary references during the process of opening the door body 30, the first hinge shaft 41 moves within the first locus groove 50, and the second hinge shaft 42 moves within the second locus groove 60. For ease of explanation, in this disclosure, when the first locus groove 50 and the second locus groove 60 are taken as stationary references, the movement of the first hinge shaft 41 and the second hinge shaft 42 relative to the stationary references will be described.

[0046] In this embodiment, the central axis of the first hinge shaft 41 is written as the positioning central axis P, and the central axis of the second hinge shaft 42 is written as the guide central axis Q. In the projection of the plane on which the top wall of the box body 10 is located, the line segment PQ is written as the axial line segment PQ.

[0047] As shown in Figures 5 to 10, the movement of the first hinge shaft 41 along the first locus groove 50 corresponds to the movement of the positioning center axis P along the first locus line S, and the movement of the second hinge shaft 42 along the second locus groove 60 corresponds to the movement of the guide center axis Q along the second locus line K. This allows the door body 30 to move inward a certain distance while rotating, compensating for the outward displacement of the first side edge W due to the rotation of the door body 30, thereby avoiding interference with the box body 100 when the door body 30 is opened.

[0048] Since the first hinge shaft 41 and the second hinge shaft 42 are fixed to the hinge plate 40, the movement of the door body 30 with respect to the box body 10 corresponds to the relative movement of the two in the plane where the top wall of the box body 10 is located (or a plane parallel to the top wall of the box body 10). In the plane where the top wall of the box body 10 is located, the movement of the axis line segment PQ with respect to the locus groove provided in the door body 30 corresponds to the movement of the hinge plate 40 with respect to the door body 30, and also corresponds to the movement of the box body 10 with respect to the door body 30. Depending on the relative nature of the movement, the movement of the door body 30 with respect to the box body 10 can be obtained based on the movement of the box body 10 with respect to the door body 30.

[0049] For ease of explanation below, the movement of axis segment PQ relative to door 30 in the plane in which the top wall of box 10 lies is chosen to represent the movement of box 10 (i.e., hinge plate 30 ) relative to door 30 .

[0050] 5, the first trajectory line S includes a first positioning point P1 away from the door side wall 32 and a sixth positioning point P6 close to the door side wall 32. The first trajectory line S first extends along a straight line from the first positioning point P1 in a direction approaching the door side wall 32, and then extends along a curve to the sixth positioning point P6.

[0051] Exemplarily, the first trajectory line S first extends along a straight line from the first positioning point P1 in a direction approaching the door side wall 32, and then extends to the sixth positioning point P6 along a curve in a direction approaching the door side wall 32 and the door front wall 31. The distance between the first positioning point P1 and the door front wall 31 is denoted as D1, the distance between the sixth positioning point P6 and the door front wall 31 is denoted as D2, and D1 > D2.

[0052] Exemplarily, the sixth positioning point P6 is close to the door side wall 32 of the first positioning point P1 and is located on the side far from the door front wall 31. That is, the first trajectory line S first extends along a straight line from the first positioning point P1 in a direction approaching the door side wall 32, and then extends to the sixth positioning point P6 along a curve in a direction approaching the door side wall 32 and away from the door front wall 31.

[0053] Next, an example in which the first trajectory line S first extends along a straight line from the first positioning point P1 in a direction approaching the door side wall 32, and then extends to the sixth positioning point P6 along a curve in a direction approaching the door side wall 32 and the door front wall 31 will be described.

[0054] Referring to FIG. 5, the second trajectory line K includes a first guide point Q1 away from the door side wall 32 and a sixth guide point Q6 close to the door side wall 32. The sixth guide point Q6 is located on the side close to the door side wall 32 and away from the door front wall 31 of the first guide point Q1. The second trajectory line K extends from the first guide point Q1 to the sixth guide point Q6 along a curve in a direction away from the door front wall 31 and approaching the door side wall 32.

[0055] The distance between the first guide point Q1 and the door front wall 31 is denoted as Z1, and the distance between the sixth guide point Q6 and the door front wall 31 is denoted as Z2. For example, Z1 < D2 < D1 < Z2. With the above configuration, the second trajectory groove 60 effectively restricts the movement of the second hinge shaft 42 in order to move the first hinge shaft 41 within the first trajectory groove 50. Therefore, the door body 30 can be moved a certain distance toward the inside during the process of opening the door body 30, and the stability during the rotational opening of the door body 30 can be ensured.

[0056] 5, in this embodiment, when the door body 30 is in the closed state, the center axis of the first hinge shaft 41 (i.e., positioning center axis P) is located at the first positioning point P1 on the first locus line S, and the center axis of the second hinge shaft 42 (i.e., guide center axis Q) is located at the first guide point Q1 on the second locus line K. In other words, when the door body 30 is in the closed state, the first hinge shaft 41 is located on the side of the second hinge shaft 42 that is closer to the door side wall 32 and the door rear wall 33.

[0057] 5, when the door 30 is in the closed state, the distance between the first hinge axis 41 and the second hinge axis 42 in a first direction parallel to the door sidewall 32 is indicated as L1, where L1 = D1 - Z1 and 2.5 mm ≤ L1 ≤ 10 mm. The distance between the first hinge axis 41 and the second hinge axis 42 in a second direction perpendicular to the door sidewall 32 is indicated as L2, where 7.5 mm ≤ L2 ≤ 30 mm. For example, when L1 = 5 mm and L2 = 15 mm, the thickness of the door 30 is within the range of 44 mm to 53 mm, and the distance by which the first side edge W exceeds the reference plane M0 during the opening process of the door 30 is small. For example, the distance is less than 3 mm.

[0058] For example, L1 is 2.5 mm, 5 mm, 7.5 mm or 10 mm, and L2 is 7.5 mm, 15 mm, 25 mm or 30 mm.

[0059] In this embodiment, the maximum opening angle of the refrigerator is G max (i.e., the fifth angle) is greater than 90°. max When the door body rotates and opens to a different angle during the process of opening to the first position, the position of the first hinge shaft 41 relative to the first locus groove 50 and the position of the second hinge shaft 42 relative to the second locus groove 60 are as follows.

[0060] In the following description, φ represents the opening angle of the door 30. When the door 30 is in a closed state, the opening angle φ is 0° (i.e., φ=0°). When the door 30 opens relative to the box 10 to open the access opening, the opening angle φ is a positive number.

[0061] 5, when φ=0°, the door body 30 is in a closed state. The positioning central axis P is located at a first positioning point P1 on the first trajectory line S, and the guide central axis Q is located at a first guide point Q1 on the second trajectory line K.

[0062] 6, when φ∈(0°, G2), the door body 30 opens from the closed state to an arbitrary angle less than G2. In this process, the first hinge axis 41 moves toward the door side wall 32 along the straight trajectory segment of the first trajectory line S, and the second hinge axis 42 moves toward the door side wall 32 and away from the door front wall 31 along the curved second trajectory line K.

[0063] As described above, when the opening angle φ∈(0°, G2) of the door body 30, the movement tendency of the door body 30 does not change, the difference is that when the door body 30 opens to a different angle, the position of the first hinge axis 41 relative to the straight trajectory segment of the first trajectory line S is different, and the position of the second hinge axis 42 relative to the second trajectory line K is different.

[0064] In this way, when the opening angle of the door 30 is φ∈(0°, G2), any angle within the range of 0° to G2 may be selected to represent the relative positions of the first hinge shaft 41 and the first locus groove 50, and the second hinge shaft 42 and the second locus groove 60 when the door 30 is opened to any angle within the range (0°, G2). As shown in Figures 6 and 13, φ=G1(G1∈(0°, G2)) represents positions within the opening angle range for comparison when the door 30 is opened to other angles.

[0065] 6 and 13, when the door body 30 is opened to G1, the positioning central axis P is located at a second positioning point P2 on the first locus line S, and the second positioning point P2 is located on the side of the first positioning point P1 closer to the door side wall 32. The guide central axis Q is located at a second guide point Q2 on the second locus line K, and the second guide point Q2 is located on the side of the first guide point Q1 closer to the door side wall 32 and away from the door front wall 31.

[0066] 7 and 14, when φ=G2, the door body 30 rotates and opens to G2. The positioning central axis P is located at the third positioning point P3 of the straight trajectory segment of the first trajectory line S, and the third positioning point P3 is located on the side closer to the door side wall 32 than the second positioning point P2. The third positioning point P3 is the end point of the straight trajectory segment closer to the door side wall 32. In other words, the third positioning point P3 is the end point of the movement of the first hinge shaft 41 along a straight line relative to the first trajectory groove 50 in a direction approaching the door side wall 32.

[0067] The guide central axis Q is located at a third guide point Q3 on the second locus line K, and the third guide point Q3 is located on the side of the second guide point Q2 that is closer to the door side wall 32 and away from the door front wall 31. For example, G2 is an arbitrary value within a range of 26° to 30° (i.e., G2ε[26°, 30°]). In other words, in the process of the door body 30 opening from the closed state to G2, the first hinge shaft 41 moves along a straight line in a direction approaching the door side wall 32, and the second hinge shaft 42 moves along a curved line in a direction approaching the door side wall 32 and away from the door front wall 31.

[0068] 8, when φ∈(G2, G4), the door body 30 opens from G2 to an angle smaller than G4. In this process, the first hinge axis 41 moves toward the door side wall 32 and the front door wall 31 along the curved trajectory segment of the first trajectory line S, and the second hinge axis 42 moves toward the door side wall 32 and away from the front door wall 30 along the second trajectory line K.

[0069] As described above, when the door door 30 is opened at an opening angle φ∈(G2, G4), the movement tendency of the door door 30 does not change. The difference is that when the door door 30 is opened to a different angle, the position of the first hinge axis 41 relative to the straight trajectory segment of the first locus line S is different, and the position of the second hinge axis 42 relative to the second locus line K is different. Similarly, when the door door 30 is opened at an opening angle φ∈(G2, G4), any opening angle within the range of G2 to G4 may be selected to represent the relative positions of the first hinge axis 41 and the first locus groove 50, and the second hinge axis 42 and the second locus groove 60 when the door door 30 is opened to any angle within the range (G2, G4). For example, as shown in FIG. 15, φ=G3(G3∈(G2, G4)) indicates positions within the opening angle range for comparison with when the door door 30 is opened to other angles.

[0070] 8 and 15, when the door body 30 is opened to G3, the positioning central axis P is located at a fourth positioning point P4 on the first locus line S, which is located on the side of the third positioning point P3 that is closer to the door side wall 32 and the door front wall 31. The guide central axis Q is located at a fourth guide point Q4 on the second locus line K, which is located on the side of the third guide point Q3 that is closer to the door side wall 32 and farther from the door front wall 31. For example, G3 is an arbitrary value within the range of 43° to 47° (i.e., G3∈[43°, 47°]). In this embodiment, G3 is set to 45°.

[0071] 9 and 16, when φ=G4, the door body 30 rotates and opens to G4. The positioning central axis P is located at a fifth positioning point P5 of the curved trajectory segment of the first trajectory line S, and the fifth positioning point P5 is located on the side closer to the door side wall 32 and the door front wall 31 than the fourth positioning point P4. The guide central axis Q is located at a fifth guide point Q5 of the second trajectory line K, and the fifth guide point Q5 is located on the side closer to the door side wall 32 than the fourth guide point Q4 and away from the door front wall 31. For example, G4 is an arbitrary value within a range of 88° to 92° (i.e., G4∈[88°, 92°]).

[0072] In this embodiment, φ=G4=90°. When the door body is opened to 90°, the position of the first hinge shaft 41 relative to the first locus groove 50 is located closer to the door side wall 32 than the position of the first hinge shaft 41 relative to the first locus groove 50 when the door body 30 is closed against the door side wall 32. In other words, the fifth positioning point P5 is located closer to the door side wall 32 than the first positioning point P1.

[0073] As shown in Figure 10, φ∈(G4,G max ), the door body 30 rotates from G4, and max In this process, the first hinge shaft 41 moves along the curved locus segment of the first locus line S in a direction approaching the door side wall 32 and the door front wall 31, and the second hinge shaft 42 moves along the second locus line K in a direction approaching the door side wall 32 and the door front wall 30. In this embodiment, max is 116° (i.e., G max =116°).

[0074] As described above, the opening angle φε(G4, G max ], the movement tendency of the door body 30 does not change, and the door body 30 changes from G4 to G max When the hinge shaft 41 is opened to a different angle, the position of the first hinge shaft 41 relative to the curved locus segment of the first locus line S is different, and the position of the second hinge shaft 42 relative to the second locus line K is different.

[0075] Similarly, the opening angle φ∈(G4, G max ], any angle within this range may be selected to represent the relative positions of the first hinge shaft 41 and the first locus groove 50, and the second hinge shaft 42 and the second locus groove 60 when the door body 30 is opened up to this range. For example, as shown in FIG. 17, max (G max ∈(G4, G max ) indicates a position within the opening angle range for comparison when the door body 30 is opened to other angles.

[0076] Door body 30 is G max (G max>90°), the positioning central axis P is located at a sixth positioning point P6 on the first locus line S, which is located on the side of the fifth positioning point P5 closer to the door side wall 32 and the door front wall 31. The guide central axis Q is located at a sixth guide point Q6 on the second locus line K, which is located on the side of the fifth guide point Q5 closer to the door side wall 32 and the door front wall 31.

[0077] In this embodiment, 0° <G1<G2<G3<G4<G max The first positioning point P1, the second positioning point P2, the third positioning point P3, the fourth positioning point P4, the fifth positioning point P5, and the sixth positioning point P6 are distributed sequentially along the first trajectory line S. The second positioning point P2, the third positioning point P3, and the fourth positioning point P4 are distributed along the straight trajectory segment in a direction approaching the door side wall 32, and the fourth positioning point P 4、 The fifth positioning point P5 and the sixth positioning point P6 are distributed along the curved trajectory segment in a direction approaching the door side wall 32 and the door front wall 31.

[0078] The first guide point Q1, the second guide point Q2, the third guide point Q3, the fourth guide point Q4, the fifth guide point Q5 and the sixth guide point Q6 are distributed in sequence along the first trajectory line S. Furthermore, the second guide point Q2, the third guide point Q3, the fourth guide point Q4 and the fifth guide point Q5 are distributed along the second trajectory line K in a direction approaching the door side wall 32 and away from the door front wall 31. The fifth guide point Q5 and the sixth guide point Q6 are distributed along the second trajectory line K in a direction approaching the door side wall 32 and the door front wall 31. In this embodiment, G1, G2, G3, G4 and G max are referred to in order as the first angle, second angle, third angle, fourth angle and maximum angle.

[0079] As a result, the door body 30 is rotated from the closed state to the maximum angle G maxDuring the process of opening the door body 30 to the full opening position, the first hinge shaft 41 always moves relative to the first locus groove 50 and always moves in a direction approaching the door side wall 32, and the second hinge shaft 42 always moves relative to the second locus groove 60 and always moves in a direction approaching the door side wall 32. That is, during the entire opening process of the door body 30, the first hinge shaft 41 and the second hinge shaft 42 maintain unidirectional movement without changing direction so that the directions in which the first hinge shaft 41 and the second hinge shaft 42 receive force are always the same, thereby improving the feel and user experience of opening and closing the door body 30 and extending the life of the first locus groove 50 and the second locus groove 60. Furthermore, during the opening process of the door body 30, the first hinge shaft 41 and the second hinge shaft 42 maintain movement such that the change in acceleration of the door body 30 is small, thereby improving the stability of the opening of the door body 30.

[0080] Note that some embodiments of the present disclosure are not limited to the above configuration. In some embodiments, the door body 30 is max In the process of opening the door to its full open position, the second hinge shaft 42 moves in a direction approaching the door side wall 32 relative to the second locus groove 60, and the first hinge shaft 41 moves back relative to the first locus groove 50. In other words, the first hinge shaft 41 moves in a direction away from the door side wall 32 relative to the first locus groove 50.

[0081] For example, the sixth guide point Q6 is located on the side of the fifth guide point Q5 that is closer to the door side wall 32. During the opening process of the door body 30, after the guide central axis Q has moved to the fifth guide point Q5, as the door body 30 continues to open, the guide central axis Q continues to move toward the door side wall 32 to the sixth guide point Q6, and the positioning central axis P moves along the first locus line S in a direction away from the door side wall 32 to the sixth positioning point P6.

[0082] The door body 30 is rotated at a specific angle (first angle G1, second angle G2, third angle G3, fourth angle G4, and maximum angle G max It can be understood that when the hinge shafts 41 and 42 are opened to their full open positions (including the first and second locus grooves 50 and 60), the positions of the two hinge shafts relative to the two locus grooves are determined. Therefore, the fitting relationship of the first hinge shaft 41 and the first locus groove 50 and the fitting relationship of the second hinge shaft 42 and the second locus groove 60 include the following:

[0083] When the opening angle φ of the door body 30 is less than G2, the first hinge shaft 41 moves along the linear trajectory segment of the first trajectory groove 50. When the opening angle φ of the door body 30 is equal to G2, the first hinge shaft 41 moves to the end point close to the door side wall 32 of the linear trajectory segment of the first trajectory groove 50 (that is, the third positioning point P3). When the opening angle φ of the door body 30 is greater than G2, the first hinge shaft 41 moves along the curved trajectory segment of the first trajectory groove 50.

[0084] When the opening angle φ of the door body 30 is less than G4 (i.e., G4 = 90°), the second hinge shaft 42 moves along the second trajectory groove 60 closer to the door side wall 32 and away from the door front wall 31. When the opening angle φ of the door body 30 is greater than G4, the second hinge shaft 42 moves along the second trajectory groove 60 closer to the door side wall 32 and the door front wall 31.

[0085] Based on the movement trajectories of the first hinge shaft 41 and the second hinge shaft 42 as described above, φ = G2 and φ = G4 divide the opening process of the door body 30 from the closed state to G max into three stages. Hereinafter, the relative movement in the three stages will be described in terms of the angle of the fitting relationship of the first hinge shaft 41 with respect to the first trajectory groove 5 and the angle of the fitting relationship of the second hinge shaft 42 with respect to the second trajectory groove 60.

[0086] In the first stage, as shown in FIG. 14, the door body 30 rotates and opens from the closed state to G2.

[0087] For example, the door body 30 opens from 0° to G2 via G1. During this process, the positioning central axis P moves in a direction approaching the door side wall 32 along the linear trajectory segment of the first trajectory line S from the first positioning point P1, and the guide central axis Q moves in a direction approaching the door side wall 32 along the second trajectory line K from the first guide point Q1 and away from the door front wall 31.

[0088] For example, the positioning central axis P moves from the first positioning point P1 along the straight trajectory segment of the first trajectory line S via the second positioning point P2 to the third positioning point P3, and the guide central axis Q moves from the first guide point Q1 along the second trajectory line K via the second guide point Q2 to the third guide point Q3.

[0089] Referring to FIG. 14, in the first stage, with the first trajectory groove 50 and the second trajectory groove 60 as references, as the door body 30 opens from 0° to G2, the axis line segment PQ rotates clockwise from P1Q1 and moves outward to P2Q2 and P3Q3 (i.e., P1Q1 → P2Q2 → P3Q3).

[0090] Since the first locus groove 50 and the second locus groove 60 are provided on the door body 30, the axis line segment PQ represents the movement of the hinge plate 40 provided on the box body 10. Therefore, when the door body 30 is used as a stationary reference, in the process of the door body 30 opening from the closed state to G2, the box body 10 (or the hinge plate 40) moves outward by a certain distance while rotating clockwise relative to the door body 30. Depending on the relativity of the movement, when the box body 10 is used as a stationary reference (or the hinge plate 40 is used as a stationary reference), in the process of the door body 30 opening from the closed state to G2, the door body 30 (or the first locus groove 50 and the second locus groove 60) rotates counterclockwise relative to the box body 10 and moves inward by a certain distance.

[0091] In other words, the door body 30 moves a certain distance inward as it opens, compensating for the outward displacement of the first side edge W due to the rotation of the door body 30, thereby avoiding interference between the door body 30 and the box body 100.

[0092] In the second stage, as shown in FIGS. 15 and 16, the door body 30 rotates from G2 to G4 and opens.

[0093] The door body 30 is opened from G2 to G4 via G3. During this process, the positioning central axis P moves from the third positioning point P3 along the curved locus segment of the first locus line S in a direction approaching the door side wall 32 and the door front wall 31, and the guide central axis Q moves from the third guide point Q3 along the second locus line K in a direction approaching the door side wall 32 and away from the door front wall 31.

[0094] For example, the positioning central axis P moves from the third positioning point P3 along the curved trajectory segment of the first trajectory line S via the fourth positioning point P4 to the fifth positioning point P5, and the guide central axis Q moves from the third guide point Q3 along the second trajectory line K via the fourth guide point Q4 to the fifth guide point Q5.

[0095] In the third stage, as shown in FIG. 17, the door body 30 moves from G4 to G max Rotate to open.

[0096] During this process, the positioning center axis P moves from the fifth positioning point P5 along the curved trajectory segment of the first trajectory line S in a direction approaching the door side wall 32 and the door front wall 31, and the guide center axis Q moves from the fifth positioning point P5 along the second trajectory line K in a direction approaching the door side wall 32 and the door front wall 31.

[0097] For example, the positioning center axis P moves from the fifth positioning point P5 along the curved trajectory segment of the first trajectory line S to the sixth positioning point P6, and the guide center axis Q moves from the fifth guide point Q5 along the second trajectory line K to the sixth guide point Q6.

[0098] Referring to the movement loci of the first hinge shaft 41 and the second hinge shaft 42 in the second and third stages, the door body 30 moves from G2 to G max In the process of rotating and opening, if the first locus groove 50 and the second locus groove 60 are stationary references, the axial line segment PQ rotates clockwise from P3Q3, passes through P4Q4 and P5Q5, and moves outward to P6Q6 (i.e., P3Q3 → P4Q4 → P5Q5 → P6Q6).

[0099] Since the first locus groove 50 and the second locus groove 60 are provided on the door body 30, it can be understood that the axis line segment PQ represents the movement of the hinge plate 40 provided on the box body 10. Therefore, when the door body 30 is used as a stationary reference, when the door body 30 moves from G2 to G max During the process of opening the door 30 to the full extent, the box body 10 (or the hinge plate 40) moves outward while rotating clockwise relative to the door body 30.

[0100] Depending on the relative movement, when the box body 10 is used as a stationary reference (or the hinge plate 40 is used as a stationary reference), the door body 30 moves from G2 to G max In the process of opening to the full extent, the door body 30 (or the first locus groove 50 and the second locus groove 60) rotates counterclockwise relative to the box body 10 and moves inward. That is, the door body 30 moves inward by a certain distance while opening.

[0101] During the opening process of the second and third stages, the door body 30 rotates from G2 to G max , and the first hinge shaft 41 moves along the curved locus segment of the first locus groove 50.

[0102] As a result, the door body 30 is moved from the closed state to the G max In the process of opening the door 30 to the full open position, the door 30 rotates around the dynamic change point, causing the door 30 to move inward. Furthermore, when the box 10 is used as a stationary reference, the door 30 always tends to move inward, compensating for the outward displacement of the first side edge W due to the rotation of the door 30 and preventing the door 30 from interfering with the cabinet 100 when the door 30 is open.

[0103] In this embodiment, the door body 30 is moved from the closed state to the G max In the process of opening the door body 30 to the G position, the door body 30 always moves inward relative to the position of the first hinge shaft 41 relative to the central axis P when the door body 30 is closed. max In the process of opening the door 30 to the full extent, the door 30 always moves inward relative to the central axis P of the first hinge shaft 41.

[0104] When the door body 30 (or the first locus groove 50 and the second locus groove 60) is used as a stationary reference, the position of the first hinge shaft 41 when the door body 30 is closed is written as the first initial position. max In the process of opening the door body 30 from the closed state to the G max In the process of opening the door to its full extent, the first hinge shaft 41 always moves in a direction approaching the door side wall 32 relative to the door body 30.

[0105] For example, the door body 30 is max In the process of opening the door to the door frame 30, the first hinge shaft 41 moves in a direction approaching the door side wall 32 and the door front wall 31 along the curved trajectory segment of the first trajectory line S. When the door body 30 rotates and opens by a unit angle, the speed at which the first hinge shaft 41 moves in a direction approaching the door front wall 31 is basically equal to the speed at which the first hinge shaft 41 moves in a direction approaching the door side wall 32 (i.e., the difference between the two speeds is less than 1 mm).

[0106] In some embodiments, in the first stage, the first hinge shaft 41 moves linearly along the linear groove segment of the first locus groove 50, and the distance the door 30 moves inward as it rotates open by a unit angle is defined as ξ1. In the second and third stages, the first hinge shaft 41 moves curvedly along the curved groove segment of the first locus groove 50, and the distance the door 30 moves inward as it rotates open by a unit angle is defined as ξ2. For example, ξ1 > ξ2.

[0107] In this way, in the first stage of opening the door body 30, the distance that the door body 30 moves inward when it opens per unit angle is large, so the door body 30 can move inward quickly and completely in the first stage. Therefore, it is possible to effectively compensate for the outward displacement of the first side edge W due to the rotation of the door body 30, and to prevent interference between the door body 30 and the cabinet 100.

[0108] In the first stage, the first hinge shaft 41 moves quickly in a direction approaching the door side wall 32, thereby quickly separating the door seal 5 from the front end face of the box body 10 and effectively reducing the pressure on the door seal 5. In addition, the arrangement of the trajectory groove having the above-mentioned trajectory characteristics is compact and has high movement efficiency.

[0109] In this embodiment, the inward movement of the refrigerator door body 30 essentially results from the inward movement of the first track groove 50. Therefore, in the first stage, the efficiency of the lateral movement of the first track groove 50 is high and the door body 30 moves inward quickly, which is advantageous in reducing the difficulty of designing and arranging the track groove.

[0110] 3, the door seal 5 includes a side seal 5a proximate to the door side wall 32. When the door body 30 is closed, the distance between the first initial position and the plane on which the door side wall 32 is located is greater than the distance between the side seal 5a and the plane on which the door side wall 32 is located.

[0111] In some embodiments, in the process of opening the door body 30 from the closed state to G1, the amount of change in the distance between the central axis of the first hinge shaft 41 and the edge of the side seal 5a away from the door side wall 32 when the door body 30 opens by a unit angle is written as ζ1. In the process of opening the door body 30 from G1 to G2, the amount of change in the distance between the central axis of the first hinge shaft 41 and the edge of the side seal 5a away from the door side wall 32 when the door body 30 opens by a unit angle is written as ζ2. For example, ζ1 > ζ2.

[0112] That is, in the process of the door body 30 opening from the closed state to G1, the rate of change of the distance between the central axis of the first hinge shaft 41 and the edge of the side seal 5a away from the door side wall 32 is greater than the rate of change of the distance between the central axis of the first hinge shaft and the edge of the side seal 5a away from the door side wall 32 in the process of the door body opening from G1 to G2. That is, in the process of the door body 30 opening from the closed state to G1, the lateral distance between the central axis of the first hinge shaft 41 and the edge of the side seal 5a away from the door side wall 32 rapidly decreases. The rate of decrease of the lateral distance between the central axis of the first hinge shaft 41 and the edge of the side seal 5a away from the door side wall 32 decreases compared to the process of the door body 30 opening from the closed state to G1.

[0113] In the above configuration, the first hinge shaft 41 moves rapidly relative to the linear locus segment of the first locus groove 50, which effectively reduces the compression of the side seal 5a perpendicular to the plane on which the access opening is located during the opening process of the door 30, thereby reducing the resistance force when the door 30 opens. In addition, the transition from the first stage of opening the door 30 from the closed state to G1 to the second stage of opening from G1 to G2 is smooth, and the door 30 does not jump, improving smoothness.

[0114] In some embodiments, the curvature changes of the second locus line K of the second locus groove 60 in the first stage and the second stage are consistent, i.e., the curvature changes of the curved line segments Q1Q2 and Q2Q3 on the first locus line K are consistent.

[0115] For example, the second locus groove 60 is an approximately elliptical arc groove, and the second locus line K has an approximately elliptical arc shape. An approximately elliptical arc groove is a groove having a central locus line (e.g., the second locus line K) that is approximately elliptical. An approximately elliptical arc includes a standard elliptical arc (i.e., a part of a standard ellipse) and a non-standard elliptical arc that differs from a standard elliptical arc due to manufacturing, assembly errors, or slight deformations but still has elliptical arc locus characteristics. In other words, a groove whose central locus line can be approximated by an elliptical arc is an approximately elliptical arc groove.

[0116] In some embodiments, during a phase (i.e., the first phase) in which the first hinge shaft 41 moves linearly along the straight groove segments of the first locus groove 50, the average moving speed of the first hinge shaft 41 relative to the straight groove segments of the first locus groove 50 is designated as a first average speed v1. During a phase (i.e., the second and third phases) in which the first hinge shaft 41 moves curvedly along the curved groove segments of the first locus groove 50, the average moving speed of the first hinge shaft 41 relative to the curved groove segments of the first locus groove 50 is designated as a second average speed v2. For example, v1 > v2.

[0117] That is, the average moving speed of the first hinge shaft 41 in the process of the door body 30 opening from the closed state to the second angle G2 is max The average moving speed of the first hinge shaft in the process of opening the door to the full width is greater than the average moving speed of the first hinge shaft in the process of opening the door to the full width. With the above configuration, the moving speed of the door body 30 in the second and third stages can be reduced, allowing the door body to open quickly, and also preventing the hinge shaft from colliding with the track groove when the door is opened with a large force, thereby extending the life of the track groove.

[0118] In some embodiments, G2 is set to 45°. That is, when the door 30 opens from the closed state to 45°, the first hinge shaft 41 moves along a straight line, and the first hinge shaft cooperates with the second hinge shaft 42 to cause the lateral displacement of the door 30, i.e., the inward movement. As the door 30 opens from the closed state to 45°, the door 30 mainly moves inward. Illustratively, the straight groove segment of the first trajectory groove 50 is parallel to the door front wall 31 to increase the efficiency of the inward movement of the door 30.

[0119] During the opening process of the door body 30, the distance between the point on the door body 30 closest to the plane on which the access opening is located and the plane on which the access opening is located is defined as the minimum distance L min When the door body 30 is opened to the angle φ, the minimum distance is L min (φ), and when the door is opened to 90°, the minimum distance L min (90°) is the maximum. That is, when the door body 30 is opened to 90°, the minimum distance L between the door body 30 and the plane where the loading / unloading opening is located ismin In this embodiment, when the door body 30 is opened to 90°, the door side wall 32 is approximately parallel to the plane on which the access opening is located (i.e., the included angle between the door side wall 32 and the plane on which the access opening is located is less than 3°).

[0120] When the door body 30 is attached to the cabinet 100, the door body 30 is rotated at a maximum angle G from 90°. max In the process of opening the door 30 to the cabinet 100, when the door 30 rotates around only the central axis of the first hinge shaft 41 to which the door 30 is fixed, the maximum angle at which the door 30 can be opened is G`. max It is called.

[0121] In this embodiment, when the door body 30 is opened to 90°, the door side wall 32 is parallel to the plane on which the loading / unloading opening is located, and the door front wall 31 is approximately parallel to the reference plane M0. max In the process of opening the door to its fullest extent, when the first hinge axis 41 moves in a direction approaching the first side edge W (i.e., in a direction approaching the door front wall 31 and the door side wall 32), the door body 30 tends to move inward and forward (away from the side entering the opening), i.e., the door body 30 moves away from the cabinet 100 and away from the box body 10.

[0122] In this embodiment, when the refrigerator is installed in the cabinet 100, the maximum angle at which the door body 30 can be opened due to the restrictions of the cabinet 100 is G. max When writing, the door body 30 is at the maximum angle G from 90°. max During the process of opening to G, the door 30 moves inward and forward, reducing the restricting effect of the cabinet 100 on the door 30, thereby increasing the maximum angle at which the door 30 can be opened. max >G` max is.

[0123] If the refrigerator is not embedded in the cabinet 100, the opening of the door 30 is not limited by the cabinet 100. For example, the maximum angle at which the door 30 can be opened is G max+ΔG, where ΔG>0°. For example, G max is an arbitrary value between 90° and 105°, and ΔG is an arbitrary value between 8° and 12°.

[0124] In some embodiments, when the door body 30 is closed, the door side wall 32 of the door body 30 is located on the side of the reference plane M0 closer to the cabinet 100, i.e., on the outside of the reference plane M0.

[0125] During the foaming process of the box body 10, expansion of the box body 10 is likely to occur, making the front of the box body 10 difficult to see. Therefore, to ensure an attractive appearance, when the door body 30 is closed, the door side wall 32 is positioned outside the reference plane M0, thereby blocking the box body 10. In this embodiment, when the door body 30 is closed, the distance between the plane on which the door side wall 32 is positioned and the reference plane M0 is written as α', and α' is set to an arbitrary value between 1 mm and 2 mm.

[0126] For example, when the door body 30 is opened to 90°, the plane where the door seal 5 is spaced from the surface of the door front wall 31 is approximately parallel to the reference plane M0. Note that in the present disclosure, the relationship between two planes can be considered "parallel" or "approximately parallel" if the included angle between them is less than 3°. In other words, "approximately parallel" includes the mathematically defined "parallel" and the relationship between two surfaces with an included angle between 0° and less than 3°.

[0127] 3, in this embodiment, the door seal 5 includes a side seal 5a close to the door side wall 32. The edge of the door seal 5 (or side seal 5a) close to the door side wall 32 and away from the door front wall 31 is designated as side seal edge F. The included angle between the plane on which the surface of the door seal 5 away from the door front wall 31 is located and the first body side wall is designated as second angle γ.

[0128] Door body 30 is 90° to the maximum angle G max As the door body 30 continues to open to 90°, the second angle γ tends to increase, and the side seal edge F gradually moves away from the plane where the door seal 5 is separated from the surface of the door front wall 31 when the door body 30 is opened to 90°.

[0129] That is, when the door body 30 is at the maximum angle G from 90° max In the process of continuing to open to 90°, the included angle between the plane away from the plane on which the surface of the door seal 5 is located and the first body side wall increases monotonically, and the distance between the side seal ridge F and the plane on which the surface of the door seal 5 away from the door front wall 31 is located when the door body 30 is opened to 90° increases monotonically.

[0130] In addition, the gate body 30 is set at a maximum angle G from 90°. max In the process of continuing to open to the maximum angle G, the second side edge N is closer to the reference plane M0 than the side seal edge F. max In the process of opening to the upper limit, as the opening angle of the door body 30 increases, the blocking of the access opening by the door seal 5 gradually decreases, and the blocking of the access opening by the door body 30 gradually decreases.

[0131] With the above configuration, the door 30 of the refrigerator 1 installed in the cabinet 100 can be opened to a larger angle (for example, greater than 90°), making it easier for the user to put in or take out items stored on the shelves of the door 30 and reducing the blocking of the entrance by the door 30. In this way, the size of the drawers installed in the storage compartment can be increased, and the space utilization rate of the storage compartment can be improved.

[0132] For example, the refrigerator 1 is installed in the cabinet 100. When the door 30 is at the maximum angle G max When the door body 30 is opened to an angle of 90°, the door front wall 31 comes into contact with the cabinet 100. In this case, in the projection of the plane on which the top wall of the box body 10 is located, the straight line determined by the side seal ridge F and the second side ridge N is approximately parallel to the surface of the door seal 5 that is away from the door front wall 31 when the door body 30 is opened to an angle of 90°.

[0133] That is, the door body 30 is at the maximum angle G maxWhen the door is opened to 90°, the angle between the side seal edge F of the door seal 5, which is close to the door side wall and far from the door front wall, the straight line on which the second side edge N of the door body 30 is located, and the plane on which the surface of the door seal 5, which is far from the door front wall 31, is located when the door body is opened to 90°, is any value within the range of 0° to 3°. The above restriction is intended to avoid an increase in the blockage of the loading / unloading opening of the door body 30 due to the rotational movement of the second side edge N, and to limit the maximum angle G at which the door body can be opened. max can be further increased.

[0134] In this embodiment, when the door body 30 is opened to 90°, the plane on which the door seal 5 is positioned away from the surface of the door front wall 31 is designated as the fourth reference plane M4. The fourth reference plane M4 is stationary relative to the box body 10 and does not move with the movement of the door body 30. When the door body 30 is opened to the maximum angle G max When the second side edge N is opened to the fourth reference plane M4, the second side edge N is located between the fourth reference plane M4 and the reference plane M0. That is, the distance between the second side edge N and the fourth reference plane M4 is greater than zero.

[0135] That is, the door body 30 is at the maximum angle G max When the door 30 is opened to the maximum angle G, the second side edge N is located between the fourth reference plane M4 and the reference plane M0. That is, the distance between the second side edge N and the fourth reference plane M4 is greater than 0. For example, when the door 30 is opened to the maximum angle G, max When fully opened, the side seal ridge F is located between the second side ridge N and the fourth reference plane M4.

[0136] As described above, as shown in FIG. 10, the door body 30 is opened at the maximum angle G max When fully opened, in the projection of the plane on which the top wall of the box body 10 is located, the second side edge N is located on the side of the side seal edge F that is away from the fourth reference plane M4, and the included angle between the line FN determined by the projection points F and N and the fourth reference plane M4 is less than 15°. Alternatively, the line FN is approximately parallel to the fourth reference plane M4 (an angle of less than 3°).

[0137] 5 to 11, the door body 30 has a second side edge N and a first side edge W. When the door body 30 is in a closed state relative to the box body 10, the second side edge N is closer to the box body 10 than the first side edge W.

[0138] In this embodiment, a first reference plane M1 and a second reference plane M2 are further defined. As shown in FIG. 11 , the first reference plane M1 is a plane parallel to the reference plane M0 and perpendicular to the plane on which the access opening is located. The first reference plane M1 is located outside the reference plane M0, and the distance between the two planes is defined as α. That is, the first reference plane M1 is a plane close to the inner wall of the case 10 of the cabinet 100. The second reference plane M2 is a plane on which the access opening of the storage compartment is located.

[0139] The first reference plane M1 and the second reference plane M2 are reference planes that remain stationary relative to the box body 10. In other words, when the door body 30 is opening relative to the box body 10, the first reference plane M1 and the second reference plane M2 do not move in conjunction with the movement of the door body 30. The second reference plane M2 is the plane on which the access opening defined by the box body 10 is located, and does not change even if another member such as a deformable door seal is provided at the access opening of the box body.

[0140] The door body 30 reaches the maximum angle G from the closed state. max In the process of opening to the first reference plane M1, the first side edge W first moves in a direction approaching the first reference plane M1 and the second reference plane M2, and then moves away from the first reference plane M1 and moves towards the second reference plane M2. The second side edge N first moves in a direction away from the first reference plane M1 and moves towards the second reference plane M2, and then moves away from the first reference plane M1 and the second reference plane M2.

[0141] As described above, when the door body 30 is in the closed state, the maximum angle G max In the process of opening up to the point, the curved locus due to the movement of the first side edge W is a smooth curve, and the curved locus due to the movement of the second side edge N is also a smooth curve.

[0142] As the door body 30 opens from the closed state to the second angle G2, the angle in the first direction formed by the direction of movement of the first side edge W and the first reference plane M1 tends to decrease, and the angle in the second direction formed by the direction of movement of the second side edge N and the second reference plane M2 tends to decrease.

[0143] The door body 30 changes from the second angle G2 to the maximum angle G max (For example, G max ≧90°), the included angle in the third direction formed by the movement direction of the first side edge W and the first reference plane M1 tends to increase, and the angle in the fourth direction formed by the movement direction of the second side edge N and the second reference plane M2 also tends to decrease.

[0144] The door body 30 reaches the maximum angle G from the closed state. max (For example, G max ≧90°), the side seal edge F moves in a direction away from the first reference plane M1 and the second reference plane M2 (it is always held). max In the process of opening the door 30 to 90°, the side seal ridge F moves closer to the first reference plane M1 and away from the second reference plane M2. That is, when the door body 30 is opened to 90°, the distance between the side seal ridge F and the first reference plane M1 reaches its maximum value.

[0145] For example, when the door body 30 is in the closed state, the maximum angle G max In the process of opening the door body 30 to its full length, the movement locus of the side seal ridge F is an approximately circular arc. In other words, in the process of opening the door body 30, the side seal ridge F moves in an approximately circular arc. Note that the "approximately circular arc" includes a mathematically defined standard arc, but also includes an arc that has a slight deviation from the standard arc. For example, the slight deviation is limited to less than 1 mm.

[0146] 18 and 19, a first gap J1 exists between the end face of the first hinge shaft 41 remote from the hinge plate 40 and the groove bottom of the first locus groove 50. The first gap J1 is any value between 1.5 mm and 3.5 mm. A second gap J2 exists between the end face of the second hinge shaft 42 remote from the hinge plate 40 and the groove bottom of the second locus groove 60. The second gap J2 is any value between 1.5 mm and 2.5 mm.

[0147] A tolerance of ±1 mm is left when assembling the hinge shaft and track groove. This configuration is advantageous for manufacturing and process adjustment. During the product assembly process, the upper and lower ends of the door body 30 are prone to misalignment, so a washer must be installed between the hinge shaft and track groove to adjust it.

[0148] For example, the first gap J1 is 2 mm, and the second gap J2 is equal to or greater than the first gap J1. As such, when the door body 30 moves upward, the door body 30 first comes into contact with the first hinge shaft 41, enhancing stability. For example, the second gap J2 = the first gap J1 = 2 mm. As a result, when the door body 30 moves upward, the door body 30 comes into contact with the first hinge shaft 41 and the second hinge shaft 42 at the same time.

[0149] In some embodiments, when the door 30 is opened, the direction of movement of the first hinge shaft 41 relative to the first locus groove 50 is referred to as a first displacement direction, and the direction of movement of the second hinge shaft 42 relative to the second locus groove 60 is referred to as a second displacement direction. The angle between the first displacement direction and the second displacement direction is referred to as a displacement angle ω. As the door 30 opens from the closed state to 90°, the displacement angle ω remains constant or varies within a predetermined range. For example, as the door 30 opens from the closed state to 90°, the amount of change in the displacement angle ω is within a range of 0° to 8°.

[0150] The above configuration allows the displacement angle to vary within a small range, i.e., to be kept relatively constant. In this way, when a user opens the door with a constant force (approximately 5N), the reaction force (i.e., the sum of the forces received by the hinge shafts during the movement process) received by the hinge shafts (first hinge shaft 41 and second hinge shaft 42) does not change significantly, which effectively reduces wear on the track groove.

[0151] In some embodiments, the door 30 rotates around a transition point during the opening process, and the transition point can be tracked and its trajectory is (X, Y).

[0152] X and Y are represented by the following formulas 1 and 2. (Formula 1) TIFF0007794995000001.tif7170 (Formula 2) TIFF0007794995000002.tif7170

[0153] Here, X represents the distance between the change point and the door side wall 32, and Y represents the distance between the change point and the door front wall 31.

[0154] X1 indicates the distance between the center point of the first hinge axis 41 in the first locus groove 50 and the door side wall 32 when the door body is closed, X2 indicates the distance between the center point of the second hinge axis 42 in the second locus groove 60 and the door side wall 32 when the door body is closed, X3 indicates the distance between the center point of the first hinge axis 41 in the first locus groove 50 and the door side wall 32 when the door body has rotated open, and X4 indicates the distance between the center point of the second hinge axis 42 in the second locus groove 60 and the door side wall 32 when the door body has rotated open.

[0155] Y1 indicates the distance between the center point of the first hinge axis 41 in the first locus groove 50 and the door front wall 31 when the door body is closed, Y2 indicates the distance between the center point of the second hinge axis 42 in the second locus groove 60 and the door front wall 31 when the door body is closed, Y3 indicates the distance between the center point of the first hinge axis 41 in the first locus groove 50 and the door front wall 31 when the door body has rotated open, and Y4 indicates the distance between the center point of the second hinge axis 42 in the second locus groove 60 and the door front wall 31 when the door body has rotated open.

[0156] 20, the center point of the first hinge shaft 41 in the first locus groove 50 is the positioning center axis P, and the center point of the second hinge shaft 42 in the second locus groove 60 is the guide center axis Q. When the door is closed, the distance between point P and the door side wall 32 is a, the distance between point P and the door front wall 31 is b, the distance between point P and point Q is L, and the included angle between the line connecting P and Q and the second reference plane M2 is m.

[0157] Next, an example will be described in which the length of the linear trajectory segment of the first trajectory line K is K`, and the curved trajectory segment is an arc (with a radius of R). The linear trajectory segment and the curved trajectory segment are connected at point P2, and the curved trajectory segment is tangent to the linear trajectory segment. When the first hinge axis 41 moves to point P2, the rotation angle of the door body 30 is the second opening angle s. When the door body rotates to the third opening angle t, the hinge axis 41 retreats into the first trajectory groove 50.

[0158] Note that the second opening angle s corresponds to the second angle G2 in Example 1. In this example, for the sake of convenience of explanation, the second opening angle is denoted as s. In any of the above examples, there is no corresponding relationship between the third opening angle t and the third angle G3.

[0159] When the door body 30 is in the closed state, the position of point P is (a, b), and the position of point P2 is represented by the following formula 3. (Formula 3) TIFF0007794995000003.tif7170

[0160] Referring to FIG. 21, (1) when the rotation angle of the door body is n (0 ≤ n ≤ s) and the moving distance of point P is k (0 < k ≤ K`),

[0161] The position of point P before rotation is represented by the following formula 4. (Formula 4) TIFF0007794995000004.tif7170

[0162] The position of point Q before rotation is represented by the following formula 5. (Formula 5) TIFF0007794995000005.tif7170

[0163] The position of point P after rotation is represented by the following formula 6. (Formula 6) TIFF0007794995000006.tif6170

[0164] The position of point Q after rotation is represented by the following formula 7. (Formula TIFF0007794995000007.tif7170

[0165] Referring to FIG. 22, (2) when the rotation angle of the door body is n (s≦n≦t), the distance between point P before rotation and point P after rotation is obtained based on the following formula 8. (Formula 8) TIFF0007794995000008.tif7170

[0166] The position of point P after rotation is expressed by the following equation 9. (Formula 9) TIFF0007794995000009.tif7170

[0167] The position of point Q after rotation is expressed by the following equation 10. (Formula 10) TIFF0007794995000010.tif6170

[0168] The position of point P before rotation is expressed by the following equation 11. (Formula 11) TIFF0007794995000011.tif18170

[0169] The position of point Q before rotation is expressed by the following equation 12. (Formula 12) TIFF0007794995000012.tif17170

[0170] Referring to FIG. 23, (3) when the rotation angle of the door body is n (n≧t), the distance between point P before rotation and point P after rotation is obtained based on the following formula 13. (Formula 13) TIFF0007794995000013.tif7170

[0171] The position of point P before rotation is expressed by the following equation 14. (Formula 14) TIFF0007794995000014.tif7170

[0172] The position of point Q before rotation is expressed by the following equation 15. (Formula 15) TIFF0007794995000015.tif6170

[0173] The position of point P after rotation is expressed by the following equation 16. (Formula 16) TIFF0007794995000016.tif17170

[0174] The position of point Q after rotation is expressed by the following equation 17. (Formula 17) TIFF0007794995000017.tif17170

[0175] If the rotation angle is s, then k=K` and the change point satisfies (1) and (2), so s is obtained.

[0176] If the rotation angle is t, the change point satisfies (2) and (3), so t is obtained.

[0177] As a result, the door body 30 is moved from the closed state to the G max In the process of opening the door 30 to the full extent, the door 30 rotates around the dynamic change point, and the door 30 moves inward.

[0178] Example 2

[0179] The hinge assembly in the second embodiment has the same principle as the hinge assembly in the first embodiment, except that the shapes of the first locus groove 50 and the second locus groove 60 are limited in the second embodiment.

[0180] In this embodiment, the first locus line S and the second locus line K are regular curves.

[0181] 3, 5 to 10, and 12 to 17, the curved trajectory segment of the first trajectory line S and the second trajectory line K are both smooth curves, and the curved trajectory segment of the first trajectory line S and the straight trajectory segment are connected with a smooth transition. Illustratively, the curved trajectory segment of the first trajectory line S is tangent to the straight trajectory segment.

[0182] Correspondingly, the groove walls of the curved groove segments of the first locus groove 50 are smooth curved surfaces, and the groove walls of the second locus groove 60 are also smooth curved surfaces. The groove walls of the straight groove segments of the first locus groove 50 are smoothly transitioned and connected to the groove walls of the curved groove segments. For example, the flat groove walls of the straight groove segments of the first locus groove 50 are in contact with the curved groove walls of the curved groove segments.

[0183] With the above configuration, the first hinge shaft 41 can move smoothly relative to the first track groove 50, and the second hinge shaft 42 can move smoothly relative to the second track groove 60. This improves the stability of the door body 30 and extends the life of the hinge shafts. During the process of opening the door body 30, the movement of the first hinge shaft 41 relative to the first track groove 50 is continuous and uninterrupted, and the movement of the second hinge shaft 42 relative to the second track groove 60 is continuous and uninterrupted.

[0184] In this embodiment, the movement of the first hinge shaft 41 relative to the first locus groove 50 and the movement of the second hinge shaft 42 relative to the second locus groove 60 correspond to the movement of the roller relative to the cam. In a cam mechanism with a roller follower, the size of the roller radius often affects the shape of the actual profile curve of the cam, so the roller radius must be selected rationally.

[0185] As shown in Figure 24a), when the theoretical profile curve of the cam is an inward concave curve, ρ'=ρ+r T Therefore, r T The size of is not limited to ρ. In this case, the cam's operating profile will always be a smooth curve, regardless of the size of the roller radius.

[0186] where ρ is the theoretical contour radius, ρ' is the actual contour radius, and r T is the roller radius.

[0187] If the theoretical profile curve of the cam is an outwardly protruding curve, then Equation 18 can be expressed as follows: (Formula 18) TIFF0007794995000018.tif7170

[0188] (1) As shown in Figure 24b), ρ min >r T , and ρ'>0, the actual contour curve is a smooth curve. min is the minimum radius of curvature of the outwardly protruding part of the theoretical profile curve (i.e., the radius of curvature of the sharpest part).

[0189] (2) As shown in Figure 24c), ρ min =r T , and ρ'=0, a sharp point will occur on the actual profile curve of the cam. Such a sharp point is very prone to wear, and is likely to change the motion law of the cam, making it unusable.

[0190] (3) As shown in Figure 24(d), ρ min <r T , and ρ'<0, the actual contour curve will have an intersection phenomenon, and the actual contour curve above the intersection point will be cut during processing, and the motion law of that part cannot be realized.

[0191] Therefore, in order for the cam profile not to intersect sharply anywhere, the roller radius r T is the minimum radius of curvature of the outward protruding part of the theoretical profile curve, ρ min For example, r T ≦0.8ρ min If this cannot be satisfied, increase the radius of the cam base circle and redesign the cam profile curve.

[0192] Based on this, in this embodiment, the curved trajectory segment of the first trajectory line S corresponds to the cam-theoretic profile curve of the first trajectory groove 50, and the cam-theoretic profile curve is an outwardly protruding curve (the curved groove segment protrudes in the direction approaching the door side wall 32). The groove wall of the first trajectory groove 50 closest to the door front wall 31 is the actual profile curve. The radius r of the first hinge axis 41 T In order to ensure that the groove wall of the first trajectory groove 50 close to the door front wall 31 is a smooth curve, the setting (ρ min >r T ) is satisfied.

[0193] In this embodiment, the second locus line K corresponds to the cam-theoretic profile curve of the second locus groove 60, and the cam-theoretic profile curve is an outwardly protruding curve (the second locus groove protrudes in a direction away from the door front wall). The groove wall of the second locus groove 60 closest to the door front wall 31 is the actual profile curve. The radius r of the second hinge shaft 42 T In order to ensure that the groove wall of the second trajectory groove 60 close to the door front wall 31 is a smooth curve, the setting (ρ min >r T ) is satisfied, which allows the first hinge shaft 41 to move smoothly and reduces wear on the second locus groove 60.

[0194] That is, the second trajectory groove 60 is substantially configured as a cam, thereby effectively avoiding discontinuous movement and wear defects due to a concave structure. As described above, in this embodiment, the curved trajectory segment of the first trajectory line S and the second trajectory line K are both configured as cam curves that protrude outward.

[0195] For example, at least a portion of the curved trajectory segment of the first trajectory line S and the second trajectory line K may be configured as an inwardly concave curve. For example, if the first trajectory line S is set to first extend along a straight line from the first positioning point P1 to the door side wall 32 and then extend along a curve toward the door side wall 32 and away from the door front wall 31 to the sixth positioning point P6, the portion of the second trajectory line K close to the door side wall 32 may be set as a curve extending toward the door side wall 32 and away from the door front wall 31. In this case, by setting the curved trajectory segment of the first trajectory line S and the portion of the second trajectory line K close to the door side wall 32 as an inwardly concave curve, the first hinge shaft 41 and the second hinge shaft 42 move smoothly along them.

[0196] Example 3

[0197] Comparing the configuration of Example 3 with the above-described Examples 1 and 2, as shown in Figures 25 to 27, the configuration of Example 3 is the same as that of Example 1 and / or Example 2 except that the second trajectory line K is located at the first guide point Q1 and includes a seventh guide point Q0 on the side away from the door side wall 32 and the door rear wall 33, and the first trajectory line S includes a seventh positioning point P0 located on the side away from the door side wall 32 of the first positioning point P1.

[0198] When the door body 30 is closed, the central axis (positioning central axis P) of the first hinge shaft 41 is located at the seventh positioning point P0, and the central axis (guide central axis Q) of the second hinge shaft 42 is located at the eighth guide point Q0. When the door body 30 is opened to G0, the central axis (positioning central axis P) of the first hinge shaft 41 is located at the first positioning point P1, and the central axis (guide central axis Q) of the second hinge shaft 42 is located at the first guide point Q1.

[0199] As the door body 30 opens from the closed state to G0, the first hinge axis 41 moves along a straight line from the seventh positioning point P0 to the first positioning point P1 in the direction approaching the door side wall 32, and the second hinge axis 42 moves from the seventh guide point Q0 to the first guide point Q1.

[0200] For example, when the door body 30 (or the first trajectory groove 50 and the second trajectory groove 60) is used as a stationary reference during the process of opening from the closed state to G0, when the door body 30 is closed, the second hinge axis 42 performs an approximately rotational movement with the central axis of the first hinge axis 41 as the rotation axis.

[0201] The aforementioned approximate rotational movement includes the rotational movement defined in the standard way around the axis, and also includes the rotational movement of the second hinge shaft 42 when the first hinge shaft 41 is slightly displaced relative to the first locus groove 50 during the above process.

[0202] For example, the approximately rotational movement includes the rotational movement of the second hinge axis 42 around the central axis of the moving first hinge axis 41, and when the door body 30 rotates by a unit angle, the displacement distance of the central axis of the first hinge axis 41 is less than 0.5 mm.

[0203] For example, the substantially rotational movement includes a case where the displacement of the first hinge shaft 41 relative to the first locus groove 50 is less than 0.2 mm when the door body 30 opens from the closed state to G0. In other words, the "substantially rotational movement" includes a case where the first hinge shaft 41 moves slightly relative to the first locus groove 50.

[0204] For example, G0 is an arbitrary value within the range of 7° to 10°.

[0205] Illustratively, the length of the line segment P0P1 on the first locus arc K is within the range of 0 mm to 0.2 mm.

[0206] In the initial stage of opening the door body 30 (i.e., when the door body 30 opens from the closed state to G0), the door body 30 mainly performs rotational movement, which can quickly overcome the mutual attraction force between the door body 30 and the box body 10 and separate the door body 30 and the box body 10.

[0207] In addition, G0 to G of the door body 30 max The process of opening the cover is the same as the first to third steps in the first embodiment, and will not be further described here.

[0208] Example 4

[0209] The fourth embodiment is the same as the third embodiment, mainly except that the door body 30 is provided with a flip beam 9 .

[0210] As shown in FIGS. 28 and 29, the refrigerator 1 includes two opposing door bodies 30, which cooperate to open and close the loading / unloading opening.

[0211] The flip beam 9 is disposed on the lining surface of one door body 30 and is close to the other door body 30. A guide groove 14 is provided on the top wall of the refrigerator storage compartment. The flip beam 9 is slidably joined to the guide groove 14, allowing the flip beam 9 and the corresponding door body 30 to switch at different angles. When the two door bodies 30 are closed, the flip beam 9 closes the gap between the two door bodies 30 and the box body 10, thereby effectively preventing cold air from overflowing.

[0212] Illustratively, the refrigerator 1 further includes a guide block 13 disposed on the top of the flip beam 9 and corresponding to the position of the guide groove 14 .

[0213] Due to the trajectory restriction of Example 4, when the guide block 13 of the door body 30 begins to enter the guide groove 14 on the box body 10 and the flip beam 9 completes its inversion, the second hinge axis 42 performs an approximately rotational movement with the central axis of the first hinge axis 41 as the rotation axis, with the door body 30 (or the first trajectory groove 50 and the second trajectory groove 60) as the stationary reference.

[0214] That is, the process in which the door body 30 rotates from G0 to the closed state corresponds to the process in which the guide block 13 contacts the guide groove 14 and the flip beam 9 completes its reversal.

[0215] Due to the limitation of the trajectory characteristics of the third embodiment, when the door 30 is closed from an angle greater than G0 to G0, the guide block 13 at the top end of the flip beam 9 comes into contact with the guide groove 14 on the box 10, and the guide block 13 begins to enter the guide groove 14. When the door 30 is closed, the flip beam 9 completes its reversal.

[0216] The arrangement of Example 4 ensures that the biasing force that flips the flip beam 9 on the door body 30 is not canceled out as the door body 30 moves outward, and prevents the guide block 13 from getting stuck due to incomplete flipping after entering the guide groove 14, effectively ensuring that the door body 30 is closed in place and ensuring the effectiveness of low-temperature storage in the refrigerator.

[0217] Example 5

[0218] The principle of the fifth embodiment is the same as that of the first to fourth embodiments, except that the door body 30 is restricted from continuing to be in the closed state toward the box body 10.

[0219] In this embodiment, as shown in Figures 30 to 32, when the door body 30 is closed, a plane that passes through the first side edge W and is parallel to the second reference plane M2 is entered as a third reference plane M3. The third reference plane M3 and reference plane M0 intersect at the theoretical first side edge W when the door body 30 is closed. The third reference plane M3 does not move while the door body 30 is opening or closing relative to the box body 10, and is a reference plane that is stationary relative to the box body 10.

[0220] 30, in this embodiment, when the door body 30 is in the closed state, the door front wall 31 is parallel to the second reference plane M2. That is, the door front wall 31 is flush with the third reference plane M3. That is, when the door body 30 is in the closed state, the door front wall 31 is located on the third reference plane M3, and the third reference plane M3 passes through the first side edge W.

[0221] When the end of the door front wall 31 away from the door side wall 32 is located on the side of the third reference plane M3 away from the box 10, the included angle between the door front wall 31 and the third reference plane is a positive number. When the end of the door front wall 31 away from the door side wall 32 is located on the side of the third reference plane M3 closer to the box 10, the included angle between the door front wall 32 and the third reference plane is a negative number.

[0222] 31, when the door body 30 is in the closed state and the door seal 5 continues to be pressed, the door seal 5 is a magnetic elastic body, so that the end of the door front wall 31 away from the door side wall 32 can move toward the side of the third reference plane M3 closer to the box 10. There is an angle δ1 between the door front wall 31 and the third reference plane M3, and δ1<0°. For example, when the first hinge shaft 41 contacts the end wall of the first locus groove 50 away from the door side wall 32 and the second hinge shaft 42 contacts the end wall of the second locus groove 60 away from the door side wall 32, the included angle between the door front wall 31 and the third reference plane M3 is defined as δ1, and the included angle δ1 is any value within the range of -3° to 0°.

[0223] In this embodiment, when the door body 30 continues to move from the closed state to δ1 in the closing direction, the second hinge shaft 42 performs a substantially rotational movement around the central axis of the first hinge shaft 41 as the rotation axis. That is, when the door body 30 continues to close from the closed state to δ1, the maximum displacement of the first hinge shaft 41 with respect to the first locus groove 50 is less than 0.2 mm. With the above configuration, when the door body 30 is swung by the box body 10 with a strong force, the door body 30 can be prevented from being bounced due to contact between the second hinge shaft 42 and the end of the second locus groove 60 away from the door side wall 32.

[0224] For example, when the door body 30 is in the closed state, a third gap μ1 exists between the first hinge shaft 41 and the end wall of the first locus groove 50 that is away from the door side wall 32, and the width of the third gap μ1 is any value between 0 mm and 0.2 mm. For example, as shown in FIG. 30, the width of the third gap μ1 is 0 mm.

[0225] A fourth gap μ2 exists between the second hinge shaft 42 and the end wall of the second locus groove 60 that is away from the door side wall 32, and the width of the fourth gap μ2 is greater than 0. The fourth gap μ2 can prevent the door body 30 from being bounced off due to contact between the second hinge shaft 42 and the end of the second locus groove 60 that is away from the door side wall 32 when the door body 30 is swung against the box body 10 with a strong force.

[0226] 30 to 32, when the door body 30 is in the closed state, the first hinge shaft 41 contacts the end wall of the first locus groove 50 that is away from the door side wall 32. When the door body 30 continues to move in the closing direction from the closed state, the first hinge shaft 41 maintains contact with the first locus groove 50.

[0227] The second trajectory line K has a retaining guide point Q'. When the second hinge axis 42 moves to the end of the second trajectory groove 60 away from the door side wall 32, the guide center axis Q is located at the retaining guide point Q'. The trajectory segment between the retaining guide point Q' and the first guide point Q1 is denoted as the retaining trajectory segment Q'Q1. Illustratively, the retaining trajectory segment Q'Q1 extends from the first guide point Q1 toward the door front wall 31 and the door side wall 32 to the retaining guide point Q'.

[0228] When the door body 30 is closed, the first hinge shaft 41 moves to the first positioning point P1, and the second hinge shaft moves to the first guide point Q1. As the door body 30 continues to move from the closed state in the closing direction, the first hinge shaft 41 is held at the first positioning point P1 (the distance it moves away from the door sidewall 32 relative to P1 is within the range of 0 mm to 0.2 mm), and the second hinge shaft 42 moves from the first guide point Q1 to the retaining guide point Q'. The rotation angle through which the door body 30 continues to move toward the box 10 is written as G'. In this embodiment, G' ≧ δ1, which prevents the second hinge shaft 42 from receiving impact at the end of the second locus groove 60 that is away from the door sidewall 32 when the door body 30 is swung by the box 10 with a strong force.

[0229] As described above, as the door body 30 continues to move from the closed state toward the box body 10, the door body 30 (or the first trajectory groove 50 and the second trajectory groove 60) acts as a stationary reference, and the second hinge axis 42 performs an approximately rotational movement with the central axis of the first hinge axis 41 as the axis of rotation.

[0230] For example, when G' is equal to δ1 and the included angle between the door front wall 31 and the third reference plane M3 reaches δ1, the first hinge axis 41 contacts the end wall of the first track groove 50 away from the door side wall 32, and the second hinge axis 42 contacts the end wall of the second track groove 60 away from the door side wall 32.

[0231] Example 6

[0232] The principle of the sixth embodiment is substantially the same as that of the first to fifth embodiments, except that the arrangement of the first locus groove 50 and the second locus groove 60 on the door body 30 is limited in the sixth embodiment.

[0233] 33 to 36, the door body 30 includes a mounting block 80. The mounting block 80 is integrally formed and attached to the door body 30 at a position opposite the hinge plate 40. The first locus groove 50 and the second locus groove 60 are formed in the mounting block 80.

[0234] 33 and 34, this embodiment will be described using a mounting block 80 provided at the upper end of the door body 30 as an example. In this embodiment, the mounting block 80 includes a track block in which a first track groove 50 and a second track groove 60 are formed. The first track groove 50 includes a groove bottom and a circumferential groove wall surrounding the edge of the groove bottom. The circumferential groove wall surrounds a groove opening provided opposite the groove bottom. The structure of the second track groove 60 is the same as the structure of the first track groove 50, except for the shape of the groove.

[0235] The mounting block 80 includes a plate 81, on which a first track groove 50 and a second track groove 60 are provided. A door end cover 38 located at the upper end of the door body 30 is provided with a receiving groove 37, and the mounting block 80 is provided within the receiving groove 37. The plate 81 and the door body 30 may be fixedly connected by fasteners such as screws. For example, a plurality of screw holes for connecting the plate 81 and the receiving groove 37 are provided in the plate 81, and are located at the edges of the first track groove 50 and the second track groove 60.

[0236] The groove openings of the locus grooves (for example, the first locus groove 50 and the second locus groove 60) provided in the mounting block 80 provided at the upper end of the door body 30 are located above the groove bottoms.

[0237] 33 and 34 , the mounting block 80 further includes dust removal holes 11. The dust removal holes 11 are provided in the groove bottoms of the first track groove 50 and the second track groove 60. For example, the mounting block 80 includes a plurality of dust removal holes 11, and the plurality of dust removal holes 11 are provided in the groove bottoms of the first track groove 50 and the second track groove 60 at ends near or far from the door side wall 32.

[0238] It can be seen that after the hinge assembly has been used for a long time, dust and other debris tend to accumulate in the first and second track grooves 50 and 60, affecting the opening and closing of the door body. In this embodiment, if debris or dust is present in the first and second track grooves 50 and 60, the hinge shaft can be moved to any end of the track groove by opening or closing the door body, thereby moving the debris to the position of the dust removal hole 11 and discharging the debris, which is advantageous in extending the service life of the hinge assembly and improving the smoothness of opening the door body 30.

[0239] In some embodiments, a first receiving chamber 371 and a second receiving chamber 372 are formed in the bottom wall of the receiving groove 37. The first locus groove 50 is attached to the first receiving chamber 371, and the second locus groove 60 is attached to the second receiving chamber 372. The plate body 81 is provided in the receiving groove 37 and is restricted by the circumferential groove wall of the receiving groove 37. With the above configuration, the mounting block 80 is attached to the receiving groove 37, and the positioning speed and accuracy of the mounting block 80 can be improved.

[0240] A dust collection chamber 12 is provided at the bottom of the first and second receiving chambers 371 and 372. The position of the dust collection chamber 12 corresponds to the position of the dust collection hole 11. Dust that falls into the first and second locus grooves 50 and 60 is discharged into the dust collection chamber 12 through the dust removal hole 11 by the action of the first hinge shaft 41 or the second hinge shaft 42, which is advantageous for extending the life of the hinge assembly and improving the smoothness of opening of the door body 30.

[0241] For example, a first deformation gap exists between the first locus groove 50 and the chamber wall of the first accommodating chamber 371, and a second deformation gap exists between the second locus groove 60 and the chamber wall of the second accommodating chamber 372. The arrangement of the first deformation gap and the second deformation gap allows the first locus groove 50 and the second locus groove 60 to have deformation spaces.

[0242] It can be understood that when the door body 30 is opened, the first hinge shaft 41 moves relative to the first locus groove 50, and the second hinge shaft 42 moves relative to the second locus groove 60. In this case, the first locus groove 50 and the second locus groove 60 maintain a certain elastic deformation space, which can extend the life of the first locus groove 50 and the second locus groove 60. In addition, it can prevent the door body 30 from getting caught due to excessive rigidity and processing errors of the first locus groove 50 and the second locus groove 60.

[0243] In some embodiments, the hinge assembly has a first mating portion at the end away from the first body side wall. The mounting block 80 has a lock block with a second mating portion formed on the lock block. The second mating portion mates with the first mating portion to lock and unlock the door 30 and the box 10.

[0244] In this embodiment, the lock block and the track block are integrally formed to form the mounting block 80.

[0245] As shown in FIGS. 35 to 44, this embodiment will be described taking as an example a mounting block 80 provided at the lower end of the door body 30. FIG.

[0246] 35 and 36, the second fitting portion on the lock block is configured as a lock structure. For example, the second fitting portion includes a lock hook 82 provided on the side of the plate body 81 that faces away from the door side wall 32. The lock hook 82 extends in a direction away from the door side wall 32 and bends in a direction toward the door rear wall 33 and the door side wall 32. The opening of the lock hook 82 faces the plate body 81 (i.e., toward the door side wall 32), and the free end of the lock hook 82 is closer to the door rear wall 33 than the fixed end of the lock hook 82.

[0247] 37 and 38, the first fitting portion is configured as a stopper portion 403 provided on the side of the hinge plate 40 away from the first main body side wall. A hook gap 404 is formed on the side of the stopper portion 403 closer to the box body. When the door body 30 is in the closed state, the free end of the lock hook 82 is accommodated in the hook gap 404, the stopper portion 403 is positioned on the lock hook 82, and the lock hook 82 of the door body 30 is caught on the stopper portion 403 of the hinge plate 40, locking the door body 30. Therefore, it is possible to prevent the door body 30 from improperly closing and affecting the refrigeration and freezing effect of the refrigerator.

[0248] 38 to 42, when the door body 30 is opened, the lock hook 82 is deformed by the force, overcomes the stopper of the stopper portion 403, and is released from the stopper portion 403.

[0249] 35 and 36, the lock hook 82 includes a second connecting portion 83 and a hook portion 84. The second connecting portion 83 is connected to the plate body 81, and the hook portion 84 is connected to the second connecting portion 83 and bent toward the side closer to the door rear wall 33 and the door side wall 32. A screw passes through the second connecting portion 83 and is inserted into the door body 30, fixedly connecting the second connecting portion 83 and the door body 30 and increasing the connection strength between the second connecting portion 83 and the door body 30. In this way, when the lock hook 82 comes off the stopper portion 403, only the hook portion 84 is deformed.

[0250] The free ends of the hook portion 84 and the stopper portion 403 are both arc-shaped, which is advantageous for the hook portion 84 to smoothly hook onto the stopper portion 403 and to release from the stopper portion 403 .

[0251] As the door 30 is being closed, the free end of the hook 84 gradually approaches the stopper 403. When the hook 84 abuts against the stopper 403, the reaction force of the stopper 403 causes the hook 84 to deform, allowing the stopper 403 to fit into the hook 84, and the free end of the hook 84 to fit into the hook gap 404. In this way, the locking hook 82 can be locked to the hinge plate 40, and the door 30 and the box 10 can be locked together.

[0252] The interaction between the hook portion 84 and the stopper portion 403 when the door body 30 is opening is opposite to the interaction between the hook portion 84 and the stopper portion 403 when the door body 30 is closing, and therefore will not be explained here.

[0253] For example, when the door 30 is closed from an arbitrary angle greater than a set angle (for example, 7°) to the set angle, the door 30 is closed by the action of the hook portion 84 and the stopper portion 403.

[0254] For example, when the door 30 is opened to a set unlocking angle (for example, 5° to 8°), the hook portion 84 is separated from the stopper portion 403.

[0255] In some embodiments, the unlocking angle is set to G1. That is, when the door body 30 is opened to G1, the hook portion 84 separates from the stopper portion 403 when the first hinge shaft 41 moves along the straight-line trajectory segment of the first trajectory line S. Alternatively, the unlocking angle is set to G2. That is, when the door body 30 is opened to G2, the hook portion 84 separates from the stopper portion 403 when the central axis of the first hinge shaft 41 moves along the straight-line trajectory segment of the first trajectory line S to an end point of the straight-line trajectory segment close to the door side wall 32.

[0256] It will be understood that in the first stage of opening the door body 30, the door body 30 mainly performs a rotational movement in order to facilitate separation of the lock hook 82 and the stopper portion 403.

[0257] 35 and 36 , the door body 30 is provided with a first protrusion 34 and a second protrusion 35, and a gap groove 36 is formed between the first protrusion 34 and the second protrusion. The first protrusion 34 is substantially located on the side of the second protrusion 35 that is closer to the door front wall 31 and the door side wall 32. The second connecting portion 83 includes an insertion plate 86, and the insertion plate 86 is inserted into the gap groove 36. In this way, by limiting the positions of the first protrusion 34 and the second protrusion 35, it is possible to prevent the second connecting portion 83 from deforming in the direction from the door front wall 31 toward the door rear wall 33.

[0258] 35 and 36, the insertion plate 86 is configured as an arc plate, and the second protrusion 35 is also configured as an arc plate. The first protrusion 34 is close to the edge of the second protrusion 35 and has the same shape as the second protrusion 35, thereby defining an arc-shaped clearance groove 36 together with the second protrusion 35. The arc-shaped insertion plate fits into the arc-shaped clearance groove 36, which increases the area restricted by the clearance groove 36 to the second connection portion 83, thereby improving the connection strength between the mounting block 80 and the door body 30.

[0259] In this embodiment, the track block and lock block of the mounting block 80 are integrally formed. In some embodiments, the track block and lock block are separate. For example, the first track groove 50 and the second track groove 60 are integrally formed on the door end cover 38, and the lock block is formed separately from the mounting block 80 and attached to the receiving groove 37.

[0260] For example, the mounting block 80 located at the upper end of the door body 30 includes a track block instead of a lock block. Correspondingly, when the structure of the mounting block 80 is changed, the receiving groove 37 provided on the door body is adapted to the structure of the mounting block 80 to receive and fix the mounting block 80.

[0261] Illustratively, mounting block 80 includes a separate track block and locking block.

[0262] 28, the refrigerator 1 is a four-door double door refrigerator, i.e., the refrigerator 1 includes four doors 30, two of which are opposite each other and the other two of which are opposite each other. The refrigerator includes six hinge assemblies for securing the four doors 30 to the casing 10.

[0263] The six hinge assemblies include two upper hinge assemblies, two middle hinge assemblies, and two lower hinge assemblies. When the door panel 30 is opened, the track blocks on the door panel 30 cooperate with the hinge axes of the hinge assemblies, rotating and moving the door panel 30 inward, reducing the distance by which the first side edge W of the door panel 30 exceeds the reference plane M0. The middle hinge assembly includes a hinge plate and a through-shaft, which extends vertically from the hinge axis. The through-shaft includes an upper hinge shaft and a lower hinge shaft. The upper hinge shaft is located above the hinge plate and cooperates with the lower end of the door panel 30 located above the middle hinge assembly. The lower hinge shaft is located below the hinge plate and cooperates with the upper end of the door panel 30 located below the middle hinge assembly.

[0264] Illustratively, the mounting block 80 at the upper end of each door body 30 includes a track block, and the mounting block at the lower end of each door body 30 includes a track block and a lock block.

[0265] The above arrangement is a double-door refrigerator in which the refrigerator compartment is located above the freezer compartment. The track block at the upper end of the door body 30 for opening and closing the refrigerator compartment is the same as the track block at the upper end of the door body 30 for opening and closing the freezer compartment. The track block and lock block at the lower end of the door body 30 for opening and closing the refrigerator compartment are the same as the track block and lock piece at the lower end of the door body 30 for opening and closing the freezer compartment. The above arrangement increases the versatility of the track block and lock block, facilitating production and manufacturing, and facilitating assembly of the refrigerator 1.

[0266] It should be noted that some embodiments of the present disclosure are not limited to refrigerators including four door bodies 30, but are also applicable to refrigerators 1 including at least four door bodies 30.

[0267] In this embodiment, the mounting block 80 may be made from polyformaldehyde (POM), which has high friction resistance and can extend the life of the hinge assembly.

[0268] In this embodiment, the first locus groove 50, the second locus groove 60, and the locking structure are integrally formed to form the mounting block 80, which improves the structural precision and strength of the mounting block 80. For example, the mounting block 80 is integrally formed by injection molding.

[0269] In some embodiments, a position limiting structure is provided between the door body 30 and the hinge plate 40 to restrict the door body 30 from opening to a maximum angle, thereby preventing damage to the mounting block 80 when the door is opened with a large force.

[0270] 43 and 44, a position limiting portion 85 is provided at the lower end of the door body 30, and the position limiting portion 85 is located at the front end of the mounting block 80 provided at the lower end of the door body 30. The hinge plate 40 includes a position limiting surface 405. The position limiting surface 405 is provided at the end of the hinge plate 40 away from the box body 10 and is close to the first main body side wall. When the door body 30 is rotated at the maximum angle G max When the door body 30 is rotated to the position limiting portion 85, the position limiting portion 85 abuts against the position limiting surface 405 of the hinge plate 40, preventing the door body 30 from continuing to rotate.

[0271] 45 and 46, when the positioning central axis P moves to the sixth positioning point P6 and the guide central axis Q moves to the sixth guide point Q6, the position limiting portion 85 at the lower end of the door body 30 abuts against the position limiting surface 405 of the hinge plate 40, thereby preventing wear due to interaction between the second hinge axis 42 and the end of the second locus groove 60 close to the door side wall 32.

[0272] 35 and 36, in this embodiment, the position limiting portion 85 includes a fitting portion 851 and a position limiting bar 852. The position limiting portion 85 may be a sheet-like sheet metal member.

[0273] The fitting portion 851 is plate-shaped and is attached to the receiving groove 37 at the lower end of the door body 30. The plate body 81 of the mounting block 80 (track block) clamps the fitting portion 851 on the door body 30 from the lower end, thereby fixing the position limiting portion 85 to the door body 30.

[0274] The position limiting bar 852 has a protruding strip shape, and is formed by the edge of the fitting portion 851 that is closest to the door front wall 31 extending downward from the underside of the door body 30. Therefore, when the position limiting portion 85 rotates to the maximum angle under the driving of the door body 30, the position limiting bar 852 is limited by the position limiting surface 405 of the hinge plate 40, restricting the door body 30 and stopping the rotation of the door body 30.

[0275] It can be seen that the stopper portion 85 is fixed to the door body 30 by being clamped by the mounting block 80, the connection structure between the stopper portion 85 and the door body 30 is omitted, and the product structure is simplified.

[0276] The limiting portion 85 may be provided at the upper end of the door body 30, although the explanation is omitted here.

[0277] Furthermore, referring to the third embodiment, in the sixth embodiment, the door 30 is provided with a locking hook 82. When the door 30 is closed, the locking hook 82 is locked by the stopper portion 403 on the hinge plate 40. In the third embodiment, the door 30 mainly rotates in the first stage, thereby allowing the locking hook 82 and the stopper portion 403 on the hinge assembly to be quickly separated, and the door 30 and the box 10 to be quickly separated.

[0278] Example 7

[0279] In the seventh embodiment, the door body 30 is opened at the maximum angle G maxThe principle is the same as that of the first to sixth embodiments, except that the method for setting the positions of the first hinge shaft 41 and the second hinge shaft 42 when fully opened is mainly limited.

[0280] In this embodiment, as shown in FIGS. 45 and 46, the door body 30 is rotated at the maximum angle G max When the door body 30 is opened to the maximum angle Gmax with a strong force, the first hinge axle 41 contacts the end of the first locus groove 50 that is closest to the door side wall 32, and the second hinge axle 42 contacts the end (i.e., the distal end) of the second locus groove 60 that is closest to the door side wall 32. With the above configuration, when the door body 30 is opened to the maximum angle Gmax with a strong force, the first hinge axle 41 and the second hinge axle 42 can simultaneously move to the ends of the first locus groove 50 and the second locus groove 60. In other words, the first hinge axle 41 and the second hinge axle 42 simultaneously interact with the door body 30, which can reduce the stress on the hinge plate 40 and is advantageous for improving the mounting stability of the hinge assembly and the box body 10.

[0281] Example 8

[0282] In Example 8, compared with Example 7, the door body 30 has a maximum angle G max The principles are the same as those of the first to seventh embodiments, except that the other installation methods of the positions of the first hinge shaft 41 and the second hinge shaft 42 when fully opened are mainly limited.

[0283] 43 and 44, a position limiting portion 85 is provided at the lower end of the door body 30, and the position limiting portion 85 is close to the door front wall 31. The hinge plate 40 is provided with a position limiting surface 405 at the end away from the box body 10 and at a position close to the first main body side wall. max When the door body 30 is rotated to the position limiting portion 85, the position limiting portion 85 abuts against the position limiting surface 405 of the hinge plate 40, preventing the door body 30 from continuing to rotate.

[0284] Door body 30 is the maximum angle G maxWhen the door is opened to the maximum angle G, the first hinge shaft 41 contacts the end of the first locus groove 50 that is close to the door side wall 32, and a separation gap μ0 (i.e., a gap, see FIG. 44) exists between the second hinge shaft 42 and the end of the second locus groove 60 that is close to the door side wall 32, and the width of the separation gap μ0 is greater than 0 (i.e., μ0>0). max When fully opened, the position limiting portion 85 contacts the hinge plate 40, the first hinge axis 41 contacts the end of the first track groove 50 (there is an interaction force), and the second hinge axis 42 does not contact the end of the second track groove 60 (there is no interaction force). The first hinge axis 41 is closer to the position limiting portion 85 than the second hinge axis 42. The above arrangement can reduce the bending moment and stress on the hinge plate 40, which is advantageous for increasing the mounting stability of the hinge assembly and the box 10.

[0285] Example 9

[0286] The difference between Example 9 and the above Example 6 is the structural arrangement of the mounting block 80. In this example, the mounting block 80 is provided separately for the track block and the lock block. As shown in FIG. 47, the track block is attached to the door end cover 38 on the side closer to the cavity of the door body 30. As in the above example, the track block is attached to the door body 30 in a position opposite the hinge plate 40, and the first track groove 50 and the second track groove 60 are formed in the track block.

[0287] 47 to 50, this embodiment will be described using a track block provided at the upper end of the door body 30 as an example. The track block includes a first track groove 50 and a second track groove 60. The first track groove 50 includes a groove bottom and a circumferential groove wall surrounding the edge of the groove bottom. The circumferential groove wall is formed by surrounding a groove opening provided opposite the groove bottom. The structure of the second track groove 60 is the same as the structure of the first track groove 50, except for the shape of the groove.

[0288] The track block includes a plate 81, and a first track groove 50 and a second track groove 60 are formed on the plate 81. A door end cover 38 located at the upper end of the door body 30 has a receiving groove 37 formed on the side away from the hinge assembly. The plate 81 is disposed within the receiving groove 37, and the plate 81 fits into the circumferential groove wall of the receiving groove 37. In this embodiment, the receiving groove 37 is provided with an engaging member for fixing the plate 81 to fixedly connect the track block and the door body 30. For example, the plate 81 and the door end cover 38 may be fixedly connected by a fastener such as a screw.

[0289] A first through hole 71 and a second through hole 72 are provided in the door end cover 38 at a position close to the hinge assembly. The shape of the first through hole 71 is substantially the same as the shape of the groove opening of the first locus groove 50, and the shape of the second through hole 72 is substantially the same as the shape of the groove opening of the second locus groove 60. The locus block is attached to the side of the door end cover 38 away from the hinge assembly. In other words, the locus block is attached to the inside of the door body 30.

[0290] 47 and 48, for example, the track block plate 81 fits into the end wall of the door end cover 38 near the hinge assembly and is fixedly connected to the door body 30 via an engaging member. The track block and hinge assembly are located on opposite sides of the end wall of the door end cover 38. The groove opening of the first track groove 50 corresponds to the first through hole 71, and the groove opening of the second track groove 60 corresponds to the second through hole 72. A plurality of fixing posts are provided on the side of the end wall of the door end cover 38 away from the hinge assembly, and the plate 81 has a plurality of fixing holes that fit with the fixing posts. By attaching the fixing posts to the fixing holes in the plate 81, the track block can be quickly positioned on the door end cover 38.

[0291] 50 , the first locus groove 50 includes a first annular plate 73 located on a side of the plate 81 away from the groove bottom of the first locus groove 50, the first annular plate 73 defining a groove opening for the first locus groove 50. The second locus groove 60 includes a second annular plate 74 located on a side of the plate 81 away from the groove bottom of the second locus groove 60. The second annular plate 74 defines a groove opening for the second locus groove 60.

[0292] The first annular plate 73 is mounted in the first through-hole 71, and the second annular plate 74 is mounted in the second through-hole 72. The plate 81 is fitted to the end plate of the door body 30 near the hinge assembly. The fixing holes on the plate 81 fit into the fixing posts on the door end cover 38, ensuring accurate positioning and assembly. The above-described assembly method of the track block and door end cover 38 in this embodiment allows the track block to be hidden inside the door body 30, thereby improving the aesthetics of the door body 30, reducing the fitting gap between the door body and the track block, and making the door body 30 easier to clean.

[0293] In some embodiments, the refrigerator includes at least two door bodies 30 arranged in pairs. The trajectory blocks are arranged at the upper and / or lower ends of the door bodies 30. The trajectory block near the first body side wall at the upper end of the door body 30 of the refrigerator 1 is the same as the trajectory block near the second body side wall at the lower end of the door body 30 of the refrigerator 1. The trajectory block near the first body side wall at the lower end of the door body 30 of the refrigerator 1 is the same as the trajectory block near the second body side wall at the upper end of the door body 30 of the refrigerator 1.

[0294] It can be understood that the two door bodies 30 described above need to be connected to the box body 10 via four track blocks. The track block located at the upper end of one door body 30 is the same as the track block located at the lower end of the other door body 30. In this way, the refrigerator 1 in this embodiment can meet installation requirements by simply providing two types of track block structures having only track grooves, which improves the versatility of parts such as the track blocks and is advantageous for reducing the manufacturing cost of the refrigerator 1.

[0295] 51 and 52, a lock block having a lock hook 82 formed thereon is provided at the lower end of the door body 30. The lock block is located on the side of the track block that faces away from the door side wall 32, and is attached to the receiving groove 37 that faces away from the door side wall 32 of the first through-hole 71 and the second through-hole 72.

[0296] The lock hook 82 includes a second connection portion 83 and a hook portion 84. The second connection portion 83 is connected to the accommodation groove 37, and the hook portion 84 is connected to the second connection portion 83 and bent toward the side closer to the door rear wall 33 and the side closer to the door side wall 32. A screw passes through the second connection portion 83 and is connected to the door body 30, increasing the connection strength between the second connection portion 83 and the door body 30. In this way, when the lock hook 82 disengages from the stopper portion 403, only the hook portion 84 deforms.

[0297] The lock block in this embodiment is attached to the door end cover 38 on the side closer to the hinge, i.e., it is fixedly attached from the outside of the door body 30. The lock block in this embodiment has a similar configuration to the lock hook 82 in the sixth embodiment, and the details will not be repeated here. Referring to the sixth embodiment, the hook portion 84 engages with the stopper portion 403 to unlock or lock the door body 30 and the box body 10.

[0298] That is, in this embodiment, the track block is provided with only a track groove, and the track block is attached to the side of the door end cover 38 that is farther from the hinge assembly. The lock hook 82 forms the lock block alone, and is attached to the side of the door end cover 38 that is closer to the hinge.

[0299] Example 10

[0300] The configuration of the tenth embodiment is the same as the configurations of the first to ninth embodiments, except for the following points.

[0301] In this embodiment, as shown in Figure 29, the refrigerator 1 includes two door bodies 30 arranged opposite each other, which cooperate to open and close the loading / unloading opening. When the two door bodies 30 are closed, a flip beam 9 is provided on the lining surface of one door body 30 close to the other door body 30. A guide groove 14 is provided on the top wall of the storage compartment of the refrigerator 1. The flip beam 9 is slidably joined to the guide groove 14, allowing the flip beam 9 and the door bodies 30 to switch at different angles.

[0302] 29, when the door body 30 is in the open state, the flip beam 9 is substantially perpendicular to the door body 30. When the door body 30 is closed, the flip beam 9 is substantially parallel to the door body 30, and closes the gap between the two door bodies 30 and the box body 10, thereby effectively preventing cold air leakage.

[0303] For example, the flip beam 9 includes a flip beam back cover that is rotatably connected to the door body 30 via a first door hinge and a second door hinge. The flip beam back cover is elastically connected to two door hinges (i.e., the first door hinge and the second door hinge) via torsion springs. The first door hinge is located above the second door hinge. A guide block 13 is fixed to the top of the flip beam back cover. The guide block 13 serves as a rotating member of the flip beam 9 and is fitted into a guide groove 14, allowing the flip beam 9 and the door body 30 to switch between different angles.

[0304] The first door hinge, the second door hinge, and the flip beam back are provided with through-holes for inserting torsion springs, which connect the two door hinges to the flip beam back, respectively. For example, the first door hinge and the flip beam back are connected by a first torsion spring, and the second door hinge is connected to the flip beam back by a second torsion spring. When the flip beam 9 rotates around the two door hinges, the first and second torsion springs store and release elastic energy, allowing the flip beam back to rotate stably or reset instantly.

[0305] When the door body 30 is opened, the flip beam 9 is closely attached to the sides of the two door hinges that are fixed to the lining of the door body 30 by the torsional force of the torsion springs (first torsion spring and second torsion spring).

[0306] Generally, when the door body 30 is being closed, the two hinge shafts move within the corresponding track grooves, and the door body 30 moves outward a certain distance relative to the hinge assembly, so that the biasing force that reverses the flip beam 9 is canceled (or partially canceled) as the door body 30 moves outward, causing the guide block 13 at the top of the flip beam 9 to get stuck after entering the guide groove 14 due to incomplete reversal, and the door body 30 is stuck after entering the guide groove 14, resulting in poor closing.

[0307] As shown in FIGS. 53 and 54, when the door body 30 is closed, a closing force F W It is necessary to apply a closing force F W The door 30 gradually closes due to the action of the angle G S When the door body 30 is closed to the angle G (i.e., the second engagement angle), the guide block 13 at the top of the flip beam 9 contacts the guide groove 14. SAs the guide block 13 continues to close, the pressure of the groove wall of the guide groove 14 causes the guide block 13 to begin to reverse, and the torsion spring is compressed radially. The flip beam 9 rotates at an angle G' F When the flip beam 9 is reversed beyond this limit, it reaches its critical value. After reaching its critical value, the torque spring begins to pull, and in accordance with the pressure of the groove wall of the guide groove 14, it quickly reverses the flip beam 9 until the door body 30 is completely closed. When the door body 30 is completely closed, the torsional force of the torsion spring is released and the torsion spring reaches its relaxed state again. The flip beam 9 comes into contact with the seal provided on the door body 30, effectively preventing cold air from leaking between the two door bodies 30.

[0308] As mentioned above, the flip beam 9 is G` F (i.e., the first reversal angle), the closing angle of the door body 30 is G F (i.e., the second critical angle), where G S >G F For example, G` F is equal to 45°, that is, when the flip beam 9 is flipped to 45°, the critical value of the torsion spring is reached. G S is set to any value within the range of 6° to 12°, and G F is set to an arbitrary value within the range of 3° to 5°. F When the flip beam 9 is closed to G`, the flip beam 9 is inverted. F After the reversal, the torsion spring expands and releases the torsional force. The torsional force released by the torque spring at this stage is the reversal force F N and the reversal force F N The action of this causes the flip beam 9 to flip back into position.

[0309] During the above-mentioned reversal of the flip beam 9, the closing force F W The door body 30 is angle G F In other words, when the door body 30 rotates and closes to the critical value of the torsion spring, the closing force F Wis removed, the flip beam 9 can automatically complete the flip.

[0310] As described above, the door body 30 is G S From G F In the process of closing, the torsion spring is compressed and the closing force F W The hook portion 84 is elastically deformed by a combination of the pressure of the groove wall of the guide groove 14 and the pressure of the door body 30. F In the closing stage after the door is closed, the reversing force F N The flip beam 9 completes the flip by the combination of the pressure of the groove wall of the guide groove 14 and the pressure of the groove wall of the guide groove 14.

[0311] In combination with the configuration of the lock structure in the sixth or ninth embodiment, as shown in Figs. 38 and 52, when the door body 30 is closed, the user applies a closing force F to the door body 30. W The door body 30 is closed by applying a force F W The free end of the hook portion 84 gradually approaches the stopper portion 403 as the door body 30 rotates and closes, and the door body 30 gradually closes due to the action of the hook portion 84. B0 (i.e., the first fitting angle, see FIG. 40), the hook portion 84 comes into contact with the stopper portion 403. The door body 30 continues to close (closing force F W As the hook portion 84 moves (due to the action of the stopper portion 403), the stopper portion 403 and the hook portion 84 interact with each other, the hook portion 84 is elastically deformed, and the movable hook portion 84 gradually enters the hook gap 404 (i.e., the stopper portion 403 enters the hook portion 84).

[0312] Door body 30 is G B1 When the door 30 continues to close until the door 30 reaches the first critical angle, the elastic deformation of the hook portion 84 reaches a predetermined threshold value. In other words, the elastic deformation of the hook portion 84 reaches the maximum deformation in the process of closing the door 30. B1After the door 30 continues to close until the end, the elastic energy accumulated in the elastic deformation of the hook portion 84 is released and combined with the force applied to the stopper portion 403, and this elastic energy causes the hook portion 84 to return to a relaxed state, driving the hook portion 84 to further enter the hook gap 404, automatically closing the door body 30 and locking the lock hook 82 and the stopper portion 403, thereby realizing the locking of the door body 30 and the box body 10.

[0313] That's it, G B0 >G B1 For example, G B0 is set to any value within the range of 15° to 20°, and G B1 is set to an arbitrary value within the range of 3° to 8°. B1 At a stage after the hook portion 84 is closed, the hook portion 84 releases its elastic energy. The biasing force released by the hook portion 84 at this stage is called the locking force F S Enter the locking force F S The door body 30 can be closed.

[0314] In addition, in the process of closing the door body 30, a closing force F W The door body 30 is G B1 In other words, when the door body 30 rotates and is closed until the elastic deformation of the hook portion 84 reaches a maximum value, the closing force F W Even if the door 30 is removed, the door 30 can automatically complete closing.

[0315] In addition, the door body 30 is G B1 After closing, the closing force F W When the inertial force F is removed, the door body 30 still G , and the door body 30 maintains its tendency to move.

[0316] As described above, the door body 30 is G B0 From G B1 In the process of closing, the hook portion 84 is closed by a closing force F W The door body 30 is elastically deformed by the cooperation of the stopper portion 403. B1When the door body 30 is closed to the maximum, the elastic deformation of the hook portion 84 reaches the maximum deformation in the process of closing the door body. B1 As the door continues to close, the elastic force of the hook portion 84 is released. S , the elastic force of the hook portion 84, the force of the stopper portion 403, and the inertial force F G The combination of these causes the door 30 to close rapidly.

[0317] As an example, the closing process of the door body 30 in which the flip beam or the hook portion 84 is separately provided has been described. Below, the closing process of the door body 30 in which the flip beam and the hook portion 84 are provided together will be described.

[0318] As shown in Figure 55, G B1 >G S The gate body 30 is set as follows: B1 When the flip beam 9 is fully closed, that is, when the amount of elastic deformation of the hook portion 84 reaches the maximum, the guide block 13 at the top of the flip beam 9 does not contact the guide groove 14.

[0319] In this embodiment, the closing force F W The gate body starts to close, and the gate body G B1 It continues to exist until the door body 30 is closed. B1 After the door is closed, the user applies a closing force F W Even if the door 30 is removed, the door 30 will close automatically.

[0320] Door body 30 is G B1 From G S When the door body 30 continues to close until the gate 30 reaches G, the guide block 13 comes into contact with the guide groove 14. S From G F In the process of continuing to close until the door body 30 is locked, the locking force F S , the elastic force of the hook portion 84, the biasing force of the stopper portion 403, and the inertial force F G The flip beam 9 is closed by the combination of the locking force F S , inertia force F GThe combination of pressure from the groove wall of the guide groove 14 and the pressure from the groove wall of the guide groove 14 causes the torsion spring to start to reverse, and the torsion spring is compressed in its radial direction.

[0321] Door body 30 is G F In the process of continuing to close from the position, the door body 30 is subjected to a locking force F S , the elastic force of the hook portion 84, the biasing force of the stopper portion 403, and the inertial force F G The flip beam 9 is kept closed by the combination of the locking force F S , reversal force F N , inertia force F G The combination of this and the pressure of the groove wall of the guide groove 14 causes it to rapidly reverse to a predetermined position.

[0322] In the above example, G B1 >G S The gate body 30 is set as follows. B1 When the hook 84 is fully closed, the guide block 13 at the top of the flip beam 9 does not contact the guide groove 14 when the elastic deformation of the hook 84 reaches the maximum. In this case, the locking force F S and the inertial force F of the door body 30 G This can promote the reversal of the flip beam 9, and cancels the reversal force of the flip beam 9 caused by the rotation and outward movement of the door body 30 during the closing process of the door body 30, thereby preventing the flip beam 9 from being unable to effectively reverse to the designated position.

[0323] As described above, in the process of closing the door body 30, the stopper portion and the locking structure are B1 After the door is closed to the locking position, the locking force F S decays continuously.

[0324] For example, G B1 =G S That is, the door body 30 is set as G B1 (G S ), the amount of elastic deformation of the hook portion 84 reaches a maximum, and the guide block 13 begins to contact the guide groove 14. As a result, the locking force FS and the inertial force F of the door body 30 G This can be fully utilized to promote the reversal of the flip beam 9, and cancel out the reversal force of the flip beam 9 caused by the rotation and outward movement of the door body 30 during the closing process of the door body 30, thereby effectively avoiding the flip beam 9 being unable to reverse to the specified position.

[0325] For example, G B1 ∈[G S , G S +3°]), the locking force F S In order to avoid excessive attenuation of the flip beam 9, the door body 30 is B1 This avoids the inability to effectively reverse after the

[0326] In combination with Example 4, G in this example S is equal to G0. Based on the trajectory characteristics of the trajectory groove in Example 4, when the elastic deformation of the hook portion 84 reaches its maximum, the guide block 13 does not contact the guide groove 14. In the process of the flip beam 9 flipping to a predetermined position after the guide block 13 contacts the guide groove 14, the second hinge shaft 42 performs a substantially rotational motion with the central axis of the first hinge shaft 41 as the rotation axis.

[0327] In this embodiment, based on the locus of the locus groove in the first embodiment, the door body 30 is B1 When fully closed, the first hinge shaft 41 is located at a first contact positioning point relative to the first track groove 50 , and the second hinge shaft 42 is located at a first contact guide point relative to the second track groove 60 .

[0328] Door body 30 is G S When the hinge shaft 41 is closed to the first position, the hinge shaft 41 is located at the second contact positioning point with respect to the first track groove 50, and the hinge shaft 42 is located at the second contact guide point with respect to the second track groove 60. B1 =G S It can be understood that when the second contact positioning point is set as follows:

[0329] Door body 30 GF When fully closed, the first hinge shaft 41 is located at a third contact positioning point with respect to the first locus groove 50, and the second hinge shaft 42 is located at a third contact guide point with respect to the second locus groove 60.

[0330] The first contact positioning point, the second contact positioning point, and the third contact positioning point are all located on a straight line locus segment of the first locus line S, and the first contact positioning point, the second contact positioning point, the third contact positioning point, and the first positioning point P1 are arranged in sequence in a direction away from the door side wall 32. The first contact guide point, the second contact guide point, and the third contact guide point are all located on the second locus line K, and the first contact guide point, the second contact guide point, the third contact guide point, and the first guide point Q1 are arranged in sequence in a direction approaching the door front wall 31 and away from the door side wall 32.

[0331] For example, as shown in FIG. F >G B1 That is, the door body 30 is set as G F When the flip beam 9 is fully closed, the flip beam 9 is inverted until the torsion spring reaches a critical value, and the elastic deformation of the hook portion 84 does not reach the maximum amount.

[0332] In this embodiment, the closing force F W is the time when the door body 30 starts to close. B1 It continues to exist until the door body 30 is closed. B1 After closing, the closing force F W is removed and the door 30 can be automatically closed into place.

[0333] Door body 30 is G F From G B1 In the process of continuing to close until the door body 30 is closed, the closing force F W The flip beam 9 rotates due to a combination of the elastic force of the hook portion 84 and the biasing force of the stopper portion 403, and the closing force F W , reversal force F N The door body 30 is reversed by the combination of pressure on the groove wall of the guide groove 14. B1When the hook portion 84 is fully closed, the elastic deformation of the hook portion 84 reaches a maximum.

[0334] Door body 30 is G B1 In the process of continuing to close until the door body 30 is locked, the locking force F S The flip beam 9 is closed by a combination of the elastic force of the hook portion 84 and the biasing force of the stopper portion 403. The flip beam 9 is closed by the locking force F S , the reversal occurs due to a combination of the reversal force FN and the pressure of the groove wall of the guide groove 14.

[0335] In the process of closing the door body 30, the door body 30 is G F After the door body 30 is closed, the door body 30 moves outward, and a reversing force F N It can be understood that the door 30 provides a continuous damping of G B1 After being closed, the locking force F S The force attenuates continuously as the closing angle of the door body 30 decreases.

[0336] So, for example, G B1 ∈(G F , G F -1°], the reversal force F N and locking force F S is prevented from being too damped, the door 30 can be quickly closed into position and the flip beam 9 can be quickly flipped into position.

[0337] In this embodiment, in combination with the locus arrangement of the locus grooves in the first embodiment, the positions of the first hinge shaft 41 and the second hinge shaft 42 relative to the first locus groove 50 and the second locus groove 60 during the process of closing the door body 30 are as follows.

[0338] Door body 30 is G B1 When fully closed, the first hinge shaft 41 is located at a first contact positioning point with respect to the first locus groove 50, and the second hinge shaft 42 is located at a first contact guide point with respect to the second locus groove 60.

[0339] Door body 30 GF When fully closed, the first hinge shaft 41 is located at a third contact positioning point with respect to the first locus groove 50, and the second hinge shaft 42 is located at a third contact guide point with respect to the second locus groove 60.

[0340] The first contact positioning point and the third contact positioning point are all located on a straight trajectory segment of the first trajectory line S, and the third contact position point, the first contact position point, and the first trajectory point P1 are sequentially arranged in a direction away from the door side wall 32. The first contact guide point and the third contact guide point are all located on the second trajectory line K, and the third contact guide point, the first contact guide point, and the first guide point Q1 are sequentially arranged in a direction away from the door side wall 32 and approaching the door front wall 31.

[0341] In this example, G S =G B0 That is, when the guide block 13 contacts the guide groove 14, the hook portion 84 abuts against the stopper portion 403. The closing force F W As a result, the flip beam 9 and the hook portion begin to deform synchronously to store elastic energy, and then release the elastic energy sequentially. This effectively improves the synchronization of the movements of the torsion spring and the hook portion, and reduces the closing force F when the door body 30 is opened. W This can reduce the time it takes to add a parameter, thereby improving the user experience.

[0342] For example, as shown in FIG. B1 =G F That is, the door body 30 is set as G B1 When the hook 84 is fully closed, the elastic deformation of the hook 84 reaches a maximum, and the flip beam 9 is inverted until the torsion spring reaches a critical value.

[0343] In this embodiment, the closing force F W The gate 30 starts to close, and the gate G B1 (G F ) until the door body 30 is closed, that is, until the door body 30 is closed, G B1After closing, the closing force F W is removed and the door 30 automatically closes into place.

[0344] Door body 30 is G B0 From G B1 In the process of closing the door body 30, the closing force F W The combination of the elastic force of the hook portion 84 and the biasing force of the stopper portion 403 keeps the door closed, and the flip beam 9 is closed with a closing force F W The combination of the pressure of the groove wall of the guide groove 14 and the pressure of the torsion spring 14 causes the torsion spring 14 to reverse, and the torsion spring 14 is compressed and stores elastic energy.

[0345] Door body 30 is G B1 (G F ), the amount of elastic deformation of the hook portion 84 reaches a maximum amount, and the flip beam 9 reverses until the torsion spring reaches a critical value.

[0346] Door body 30 is G B1 (G F ), the door body 30 continues to be closed until the locking force F S The flip beam 9 is kept closed by the elastic force of the hook portion 84 and the stopper portion 403. S , the combination of the reversing force FN and the pressure of the groove wall of the guide groove 14 causes the sheet to reverse to a predetermined position.

[0347] In the above example, G B1 =G F That is, the door body 30 is set as G B1 (G F ), when the elastic deformation of the hook portion 84 reaches its maximum, the flip beam 9 is reversed until the torsion spring reaches its critical value, and the reversal force F N and locking force F SBy fully utilizing the mutual promoting action between the door body 30 and the flip beam 9, the door body 30 can be quickly closed to a predetermined position and the flip beam 9 can be quickly flipped back to the predetermined position. Therefore, in the process of closing the door body 30, the flipping force of the flip beam 9 caused by the outward movement of the door body 30 is counteracted, so that the flip beam 9 is prevented from being unable to effectively flip back to the predetermined position.

[0348] As described above, in the process of closing the door body 30, the door body 30 is G B1 (G F ), the door body 30 moves outward during the closing process, and then a reversing force F N Furthermore, when the closing angle of the door body 30 decreases, the locking force F S continues to decrease.

[0349] In this example, G B1 =G F Therefore, the reversal force F N and locking force F S When both are maximum, the reversal force F N and locking force F S and are simultaneously promoted, and the locking force F S The angular range that facilitates the flip of the flip beam 9 is fully expanded.

[0350] In this embodiment, based on the restriction on the locus of the locus groove in the first embodiment, the door body 30 is B1 (G F ), the first hinge shaft 41 is located at a first contact positioning point with respect to the first locus groove 50, and the second hinge shaft 42 is located at a first contact guide point with respect to the second locus groove 60.

[0351] The first contact positioning point is located on a straight trajectory segment of the first trajectory line S, and the first contact positioning point and the first positioning point P1 are sequentially arranged in a direction away from the door side wall 32. The first contact guide point is located on the second trajectory line K, and the first contact guide point and the first guide point Q1 are sequentially arranged in a direction away from the door side wall 32 and toward the door front wall 31.

[0352] In this example, GS =G B0 That is, when the guide block 13 contacts the guide groove 14, the hook portion 84 abuts against the stopper portion 403. In this way, the closing force F W By this action, the torsion spring and the hook part of the flip beam 9 simultaneously start to deform and store elastic energy, and then the elastic energy is sequentially released, thereby effectively improving the motion synchronization of the torsion spring and the hook part. In addition, when the door body 30 is opened, the closing force F W Reducing the time it takes to add a value can improve the user experience.

[0353] Example 11

[0354] Example 11 is the same as Examples 1 to 10 except for the following points. In this example, as shown in Figure 58, the angle bisector plane of the included angle formed by the door front wall 31 and the door side wall 32 is entered as angle bisector plane H (i.e., reference angle bisector plane). The dihedral angle formed by the third reference plane M3 and the reference plane M0 is entered as the first included angle σ, where σ = 90°. When the door body 30 is closed, the angle bisector plane H equally divides the first included angle σ.

[0355] The angle bisector plane of the dihedral angle formed by the third reference plane M3 and the reference plane M0 (held stationary) is the angle bisector plane H of the included angle formed by the door front wall 31 and the door side wall 32 when the door body 30 is closed. In other words, the angle bisector plane H when the door body 30 is closed is also the angle bisector plane of the included angle formed by the third reference plane M3 and the reference plane M0. During the process of opening the door body 30 relative to the box body 10, the angle bisector plane H moves together with the door body 30 relative to the box body 10.

[0356] In this embodiment, when the door body 30 is closed, the first side edge W is located on the reference plane M0, that is, when the door body 30 is closed, the first side edge W is the intersection line between the third reference plane M3 and the reference plane.

[0357] 58 to 60, the first included angle σ formed by the door front wall 31 and the door side wall 32 is equal to 90°.

[0358] When the door body 30 is closed, the positioning central axis P is located at the first positioning point P1 of the first locus S. The included angle between the line segment WP and the straight locus segment on the first locus line is written as θ (e.g., θ∈[0], π / 2). The distance between the first side edge W and the line on which the straight locus segment on the first locus line S is located is R, where R is a constant value.

[0359] When the door 30 rotates around the first hinge axis 41 (positioning center axis P) as the rotation axis to open, and when the door 30 rotates until WP becomes parallel to the second reference plane M2, the distance E between the first side edge W and the reference plane M0 becomes maximum. For example, this is expressed by the following equation 19. During this process, the door 30 rotates around the first hinge axis 41 by an angle θ.

[0360] (Formula 19) TIFF0007794995000019.tif8170

[0361] where E max is an incremental function of θ and is expressed by the following equation 20.

[0362] (Formula 20) TIFF0007794995000020.tif27170

[0363] As can be seen from the above, the following equation 21 is an incremental function with respect to θ:

[0364] (Formula 21) TIFF0007794995000021.tif8170

[0365] 58, the intersection of the straight line trajectory segment of the first trajectory line S and the angle bisector plane H is designated as the second set position A2, the point on the first trajectory line S located on the side of the angle bisector plane H closer to the door side wall 32 is designated as the first set position A1, the point on the straight line trajectory segment of the first trajectory line S located on the side of the angle bisector plane H farther from the door side wall 32 is designated as the third set position A3, the included angle between WA1 and the straight line trajectory segment of the first trajectory line is designated as θ1, the included angle between WA2 and the straight line trajectory segment on the first trajectory line is designated as θ2, and the included angle between WA3 and the straight line trajectory segment of the first trajectory line is designated as θ3, where θ1 > θ2 > θ3.

[0366] E max =R / sinθ-Rcotθ is an incremental function of θ, so E max (θ1)>E max (θ2)>E max It can be seen that (θ3).

[0367] As described below, when the door body 30 is closed, and the first positioning point P1 is set at the first set position A1, if the door body 30 only rotates around the rotation axis (e.g., the first hinge axis 41), the distance that the first side edge W exceeds the reference plane M0 during the rotation of the door body 30 will be the maximum amount.

[0368] When the door body 30 is closed, if the first positioning point P1 is set at the third set position A3, and the door body 30 only rotates around the rotation axis (e.g., the first hinge axis 41), the distance that the first side edge W extends beyond the reference plane M0 during the rotation of the door body 30 is minimized.

[0369] Therefore, in order to enable the door body 30 to be embedded in the cabinet 100, when the door body 30 is closed, the greater the distance between the first positioning point P1 and the door side wall 32, the smaller the amount of displacement compensation required for the door body 30 to move inward while rotating.

[0370] The first hinge shaft 41 can be arranged on the angle bisector plane H in consideration of the stability of the rotation and movement of the door body 30.

[0371] As described above, in this embodiment, for the first trajectory groove 50 and the second trajectory groove 60, whose relative positional relationship remains constant, if the position of the first positioning point P1 in the first trajectory groove 50 relative to the angle bisector plane H is different when the door body 30 is closed, the distance between the door body 30 and the first reference plane M1 will be different when the door body 30 rotates and opens to 90°.

[0372] For example, as the distance between the first positioning point P1 of the first trajectory groove 50 and the door side wall 32 increases, when the door body 30 rotates and opens to 90°, the distance between the door body 30 and the first reference plane M1 increases, and the maximum angle at which the door body 30 can open increases.

[0373] For example, referring to FIG. 9, when the door body 30 is opened to 90°, the distance between the door front wall 31 and the reference plane M0 is written as a first distance λ, and when the door front wall 31 is located inside the reference plane M0, the first distance λ is a positive number.

[0374] For example, as shown in FIG. 59, if the first positioning point P1 is set to be located at the first set position A1 when the door 30 is closed, when the door 30 is opened to 90°, the first distance λ is equal to 0, and the door front wall 31 is flush with the reference plane M0. In this embodiment, |A1A2|∈(0, 2), where the unit is mm. In this manner, the positioning central axis P is ensured to approach the angle bisector plane H, ensuring the stability of the movement of the first hinge axis 41 relative to the door 30. Meanwhile, by ensuring that the door 30 does not exceed the reference plane M0 when opened to 90°, interference between the door 30 and the cabinet 100 can be avoided.

[0375] 60, when the door body 30 is closed, if the first positioning point P1 is set to the third set position A3, when the door body 30 is opened to 90°, the door front wall 31 is located inside the reference plane M0, and the first distance λ is greater than 0. For example, λ∈[0.5, 2], where the unit is mm.

[0376] In this case, the door 30 is located inside the reference plane M0, which is advantageous for the door 30 of the refrigerator 1 embedded in the cabinet 100 to be opened to a larger angle. For example, |A3A2|∈(0, 2), where the unit is mm. In this way, it is ensured that the positioning central axis P is close to the angle bisector plane H, and the stability of the movement of the first hinge shaft 41 relative to the door 30 is ensured. Meanwhile, it is also ensured that the door 30 is located inside the reference plane M0 when opened to 90°, which is advantageous for the door 30 of the refrigerator 1 embedded in the cabinet 100 to be opened to a larger angle.

[0377] In this embodiment, the door front wall 31 is flush with the third reference plane M3, and the door side wall 32 is flush with the reference plane M0. The angle bisector plane H is also the angle bisector plane of the included angle between the door front wall 31 and the door side wall 32. When the door body 30 rotates only around the first hinge axis 41 and opens to 45°, the angle bisector plane H is parallel to the third reference plane M3. When the door body 30 opens to 90°, the door front wall 31 is parallel to or flush with the reference plane M0.

[0378] For example, when the door body 30 is opened to approximately 45°, the first hinge shaft 41 moves to the end of the straight trajectory segment of the first trajectory line S that is close to the door side wall 32 (i.e., the third positioning point P3). For example, when the first hinge shaft 41 moves to the end of the straight trajectory segment of the first trajectory line S that is close to the door side wall 32, the opening angle of the door body 30 is any angle within the range of 43° to 47°. That is, in this embodiment, it is any angle within the range of G2∈[43°, 47°].

[0379] It should be understood by those skilled in the art that the scope of the present disclosure is not limited to the technical solution consisting of a specific combination of the above technical features, but should also encompass other technical solutions formed by any combination of the above technical features or their equivalents without departing from the spirit thereof. The scope of the present disclosure is limited by the claims. [Explanation of symbols]

[0380] 1 refrigerator, 9 flip beam, 10 box body, 11 dust removal hole, 12 dust collection chamber, 13 guide block, 14 guide groove, 30 door body, 31 door front wall, 32 door side wall, 33 door rear wall, 34 first protrusion, 35 second protrusion, 36 clearance groove, 37 storage groove, 371 first storage chamber, 372 second storage chamber, 38 door edge cover, 5 door seal, 5a side seal, 100 cabinet, 71 first through hole, 72 second through hole, 73 first ring plate, 74 second ring plate, 80 mounting block, 81 plate body, 82 lock hook, 83 second connection portion, 84 hook portion, 85 position limiting portion, 851 insertion portion, 852 position limiting bar, 86 insertion plate, 40 hinge plate, 401 first connection portion, 402 extension portion, 403 stopper portion, 404 hook gap, 405 position limiting surface, 41 first hinge shaft, 42 second hinge shaft, 50 first trajectory groove, S first trajectory line, P1 first positioning point, P2 second positioning point, P3 third positioning point, P4 fourth positioning point, P5 fifth positioning point, P6 sixth positioning point, P0 seventh positioning point, 60 second locus groove, K second locus line, Q1 first guide point, Q2 second guide point, Q3 third guide point, Q4 fourth guide point, Q5 fifth guide point, Q6 sixth guide point, Q0 seventh guide point, M0 reference plane, M1 1st reference plane, M2 2nd reference plane, M3 3rd reference plane, M4 4th reference plane, W 1st side edge, N 2nd side edge, F side seal edge, G1 1st angle, G2 2nd angle, G3 3rd angle, G4 4th angle, G max Maximum angle, J1 first gap, J2 second gap

Claims

1. A refrigerator, The refrigerator includes a box, a plurality of storage compartments, a cold air supply device, at least one door, a hinge assembly, and a mounting block; The box defines a space for a plurality of storage compartments, the box includes a container defining the storage compartments, a housing forming the exterior of the refrigerator, and a heat insulating layer disposed between the container and the housing, the box includes a first body side wall and a second body side wall opposing each other, The plurality of storage compartments include a refrigeration compartment and a freezer compartment located below the refrigeration compartment, and an access opening is formed at a front end of the storage compartment, the cold air supply device is used to supply cold air to the storage compartment, The at least one door is connected to the box body and is used to open and close an access opening of at least one of the plurality of storage compartments, and the door is a door front wall that separates from the box body when the door body is closed; a door rear wall provided opposite the door front wall and close to the box body; a door side wall adjacent the hinge assembly and connected to the front door wall; a first side edge W and a second side edge N, wherein the first side edge W is formed when the door front wall and the door side wall of the door body intersect, and the second side edge N is formed when the door side wall and the door rear wall intersect, and when the door body is closed, the first side edge W is located on a side of the second side edge N that is farther away from the box body, the hinge assembly includes a hinge plate fixedly connected to the box body, the hinge plate including a connection portion connected to the box body, a horizontal plate-shaped extension portion extending forward from the connection portion, and a first hinge shaft and a second hinge shaft integrally formed with the extension portion, and when the door body is in a closed state, the first hinge shaft is located on a side of the second hinge shaft that is closer to the door side wall and the door rear wall, the mounting block includes a plate body, a first locus groove and a second locus groove formed on the plate body, and an accommodation groove provided on a lower end surface of the door body, the mounting block is positioned in the accommodation groove and fixedly connected to the door body; the first hinge shaft fits into the first locus groove, the second hinge shaft fits into the second locus groove, and the first hinge shaft moves relative to the first locus groove and the second hinge shaft moves relative to the second locus groove during the process of the door body rotating or opening and closing; the first locus groove includes a curved groove segment, one end of the curved groove segment extends in a direction approaching the first side edge W, and the distance between the curved groove segment and the door side wall tends to decrease along a direction from the door rear wall toward the door front wall, and one end of the second locus groove is farther from the door rear wall and the door side wall than the other end of the second locus groove, A center locus line of the first locus groove is defined as a first locus line S, and a center locus line of the second locus groove is defined as a second locus line K, The central axis of the first hinge shaft is a positioning central axis P, and the central axis of the second hinge shaft is a guide central axis Q. When the door body is in a closed state, the positioning central axis P is a first positioning point P on the first locus line S. １ The guide central axis Q is located at the first guide point Q of the second locus line K. １ When the door body is opened to Gmax, the positioning center axis P is at the sixth positioning point P on the first locus line S. ６ The guide central axis Q is located at the sixth guide point Q on the second locus line K. ６ Located in The first positioning point P １ is the end point of the positioning central axis P when it moves along the first locus line S, and is separated from the door side wall, and the sixth positioning point P ６ is the end point of the positioning center axis P that is close to the door side wall when moving along the first trajectory line S, and the first guide point Q １ is the end point of the guide central axis Q when it moves along the second locus line K, and the sixth guide point Q ６ is an end point close to the door side wall reached when the guide central axis Q moves along the second locus line K, The first positioning point P １ The distance between the door and the front wall is D １ and the sixth positioning point P ６ The distance between the door and the front wall is D ２ year, The first guide point Q １ The distance between the door and the front wall is Z １ and the sixth guide point Q ６ The distance between the door and the front wall is Z ２ And Z １ <D ２ and When the door body is in a closed state, the distance between the central axes of the first hinge shaft and the second hinge shaft in a first direction parallel to the door side wall is defined as L １ And L １ =D １ -Z １ and 2.5 mm≦L １ ≦10 mm, and the distance between the first hinge axis and the second hinge axis in a second direction perpendicular to the door side wall is L ２ And 7.5 mm≦L ２ ≦30 mm, A first gap J is formed between the end face of the first hinge shaft that is far from the hinge plate and the groove bottom of the first locus groove. １ There is a second gap J between the end face of the second hinge shaft farther from the hinge plate and the groove bottom of the second locus groove. ２ exists, and the second gap J ２ ≧First gap J １ and The mounting block further comprises: a lock hook provided on the plate body and on a side away from the door side wall, the lock hook including a hook portion extending toward the side away from the door side wall and bent toward the side closer to the door rear wall, the lock hook having an opening facing the plate body, and a free end of the lock hook closer to the door rear wall than a fixed end of the lock hook; a stopper portion provided on a side of the hinge plate away from the first main body side wall, the stopper portion having a hook gap on a side of the stopper portion closer to the box body, When the door body is in a closed state, the free end of the locking hook is received in the hook gap, and the locking hook and the hinge plate are locked to lock the door body. When the door body is opened, the locking hook is deformed by a force and separated from the stopper part. a position limiting surface is provided at an end of the hinge plate away from the box body and close to the first main body side wall; a position limiting portion is provided at a lower end of the door body close to the hinge assembly, the position limiting portion including an insertion portion and a position limiting bar, and the position limiting portion is a sheet metal member; the fitting portion is plate-shaped, the mounting block is located on a side of the fitting portion that is away from the door body, and the mounting block is used to be fixed to the door body with the fitting portion sandwiched therebetween; The position limiting bar is provided by extending an edge of the fitting portion close to the door front wall from the surface of the door body toward a side away from the door body, The door body is in a closed state and has a maximum angle G ｍａｘ When the door is fully opened, the position limiting bar abuts against the position limiting surface to prevent the door body from rotating. The angle bisector plane of the included angle formed by the door front wall and the door side wall is defined as angle bisector plane H, and when the door body is closed, the central axis of the first hinge shaft is located on the side of the angle bisector plane H that is away from the door side wall. refrigerator.

2. the at least one door body includes two door bodies, the two door bodies being provided opposite each other; The refrigerator further comprises: a flip beam provided at one end of one of the two door bodies closer to the other, the flip beam being connected to the door body via a door hinge, and the flip beam and the door hinge being elastically connected by a torsion spring; a guide groove provided on the top wall of the storage chamber; A guide block is disposed on the top of the flip beam, engages with the guide groove, and realizes switching between different angles of the flip beam and the corresponding door body; When the door body is in the process of closing from the open state, the door body is rotated at an angle G Ｂ０ When the door is closed to the end, the hook portion contacts the stopper portion, As the door body continues to close, the stopper portion and the hook portion interact with each other, the hook portion elastically deforms, and the hook portion enters the hook gap, The door is angled G Ｓ 2. The refrigerator according to claim 1, wherein the guide block at the top of the flip beam contacts the guide groove when the door is closed to the full extent, and the guide block is turned over by the pressure action of the groove wall of the guide groove as the door body continues to close.

3. The door body is in the closed state at the maximum angle G ｍａｘ When the door is opened to the full extent, a separation gap μ is formed between the second hinge shaft and the end of the second locus groove close to the door side wall. ０ is set, and the separation gap μ ０ 3. The refrigerator according to claim 1, wherein the width of the second hinge shaft is greater than 0, so that the second hinge shaft does not contact the end of the second locus groove and there is no interaction force.

4. The door body is in the closed state at the maximum angle G ｍａｘ When the door is opened to the full width, the first hinge shaft contacts the end of the first locus groove close to the door side wall, and a separation gap μ is formed between the second hinge shaft and the end of the second locus groove close to the door side wall. ０ exists, and the separation gap μ ０ 3. The refrigerator according to claim 1, wherein the width of the second hinge shaft is greater than 0, so that the second hinge shaft does not contact the end of the second locus groove and there is no interaction force.

5. The door body is in the closed state at the maximum angle G ｍａｘ 3. The refrigerator according to claim 2, wherein when the refrigerator is fully opened, the first hinge shaft contacts an end of the first locus groove that is closer to the door side wall, and the second hinge shaft contacts an end of the second locus groove that is closer to the door side wall.

6. The first trajectory line S includes two trajectory segments extending in different directions, and the connection point of the two trajectory segments is defined as a second positioning point P. ２ the first trajectory line S extends from an end away from the door side wall toward a direction closer to the door side wall, Second angle G ２ is the unlocking angle, and the door body is ２ When the hinge shaft 1 is opened to the first position, the central axis of the first hinge shaft aligns with the second positioning point P along the first locus line S. ２ and the lock hook separates from the stopper portion. The central axis of the first hinge shaft is located at a sixth positioning point P, the end point of the first trajectory line S being closer to the door side wall. ６ and the door body is set at the second angle G ２ from the maximum angle G ｍａｘ During the process of opening the door to the sixth positioning point P, the central axis of the first hinge shaft moves along the first trajectory line S in a direction approaching the door side wall. ６ and the central axis of the second hinge shaft moves along the second trajectory line K in a direction approaching the door side wall to a sixth guide point Q ６ Move to The door body is in the closed state and has the maximum angle G ｍａｘ When the door is opened to the position limiting surface, the position limiting portion abuts against the position limiting surface to prevent the door body from opening. ２ <90°<G ｍａｘ The refrigerator according to claim 2 .

7. The plane where the access opening of the storage compartment is located is referred to as the second reference plane M ２ When the door body is closed, a first side edge W is formed by a line where a plane on which the door front wall is located and a plane on which the door side wall is located intersect, and the second reference plane M passes through the first side edge W. ２ The plane parallel to this is the third reference plane M ３ year, When the door body is closed, the door front wall is aligned with the third reference plane M ３ When the door body is closed, the door front wall is flush with the second reference plane M ２ and a fourth gap μ is formed between the second hinge shaft and the end wall of the second locus groove at the end away from the door side wall. ２ exists, and the width of the fourth gap μ2 is greater than 0; When the door body is in the closed state and the door seal continues to be pressed, the door front wall is in contact with the third reference plane M ３ and move to the side of the door closer to the box body, and align the door front wall with the third reference plane M ３ The included angle between １ and δ １ Refrigerator according to claim 2, wherein the temperature is <0°.

8. The plane where the access opening of the storage compartment is located is referred to as the second reference plane M ２ When the door body is closed, a first side edge W is formed by a line where a plane on which the door front wall is located and a plane on which the door side wall is located intersect, and the second reference plane M passes through the first side edge W. ２ The plane parallel to this is the third reference plane M ３ year, When the door body is closed, the door front wall is aligned with the third reference plane M ３ When the door body is closed, the door front wall is flush with the second reference plane M ２ and a third gap μ is formed between the first hinge shaft and the end wall of the first locus groove at the end away from the door side wall. １ There exists the third gap μ １ is an arbitrary value between 0 mm and 0.2 mm, and a fourth gap μ is provided between the second hinge shaft and the end wall of the second locus groove at the end away from the door side wall. ２ exists, and the fourth gap μ ２ The width of is greater than 0, When the door body is in the closed state and the door seal continues to be pressed, the door front wall is in contact with the third reference plane M ３ and the door front wall and the third reference plane M ３ The included angle between １ and δ １ Refrigerator according to claim 2, wherein the temperature is <0°.

9. The door further includes a door seal disposed on a wall surface of the door body facing the door front wall, the door seal having a side seal ridge F that is close to the door side wall and away from the door front wall, When the door body is in the process of closing from the open state, the door body is rotated at an angle G Ｂ０ When the door body is closed to the end, the hook portion comes into contact with the stopper portion, and when the door body continues to be closed, the stopper portion and the hook portion interact with each other, the hook portion is elastically deformed, and the hook portion enters the hook gap, The door is angled G Ｓ When the door is closed, the guide block located at the top of the flip beam comes into contact with the guide groove, and as the door body continues to close, the guide block begins to turn over due to the pressure of the groove wall of the guide groove. When the door body is opened to 90°, the surface of the door seal that faces away from the door front wall is substantially parallel to the first main body side wall, The door body is angled from 90° to the maximum angle G ｍａｘ 3. The refrigerator according to claim 2, wherein, in the process of opening the door to 90°, an included angle between a surface of the door seal that faces away from the door front wall and the first body side wall monotonically increases, and a distance between the side seal ridge F and a plane on which the surface of the door seal that faces away from the door front wall is located when the door body is opened to 90°.

10. The axis radius of the first hinge axis and the second hinge axis is r Ｔ and the minimum radius of curvature of the curved locus of the first locus line S and the second locus line K is ρ ｍｉｎ and r Ｔ and ρ ｍｉｎ is Ｔ The refrigerator according to claim 9, wherein the temperature satisfies ≦0.8ρmin.

11. the door seal includes a side seal; The door body is in a closed state G １ In the process of opening the door to the door, the average change amount of the distance between the central axis of the first hinge shaft and the edge of the side seal that is separated from the door side wall each time the door body rotates by a unit angle is expressed as ζ １ and the door body is G １ From G ２ In the process of opening the door to the door, the average change amount of the distance between the central axis of the first hinge shaft and the edge of the side seal that is separated from the door side wall each time the door body rotates by a unit angle is expressed as ζ ２ Let, ζ １ and ζ ２ is ζ １ >ζ ２ The refrigerator according to claim 10, which satisfies the following:

12. The average distance that the first hinge shaft moves inward when the door body rotates and opens by a unit angle during the linear movement of the first hinge shaft along the linear groove segment of the first locus groove is defined as ξ １ year, The average distance that the first hinge shaft moves inward when the door body rotates and opens by a unit angle during the course of the curved movement of the first hinge shaft along the curved groove segment of the first locus groove is defined as ξ ２ Let, ξ １ and ξ ２ is ξ １ >ξ ２ The refrigerator according to claim 10, wherein

13. The axis radius of the first hinge axis and the second hinge axis is r Ｔ and the minimum radius of curvature of the curved locus of the first locus line S and the second locus line K is ρ ｍｉｎ and r Ｔ and ρ ｍｉｎ is Ｔ ≦0.8ρmin is satisfied, When the door body is in the process of closing from the open state, the door body is rotated at an angle G Ｂ０ When the door is closed to the end, the hook portion comes into contact with the stopper portion, and as the door body continues to close, the stopper portion and the hook portion interact with each other, the hook portion is elastically deformed, and the hook portion enters the hook gap, The door is angled G Ｓ When the door is closed, the guide block at the top of the flip beam contacts the guide groove, and as the door body continues to close, the guide block begins to flip over due to the pressure of the groove wall of the guide groove. The average distance that the first hinge shaft moves inward when the door body rotates and opens by a unit angle during the linear movement of the first hinge shaft along the linear groove segment of the first locus groove is defined as ξ １ year, The average distance that the first hinge shaft moves inward when the door body rotates and opens by a unit angle during the course of the curved movement of the first hinge shaft along the curved groove segment of the first locus groove is defined as ξ ２ Let, ξ １ and ξ ２ is ξ １ >ξ ２ The refrigerator according to claim 2, wherein

14. When the door body is in the process of closing from the open state, the door body is rotated at an angle G Ｂ０ When the door body is closed to the angle G, the hook portion comes into contact with the stopper portion, and when the door body continues to be closed, the stopper portion and the hook portion interact with each other, the hook portion is elastically deformed, the hook portion enters the hook gap, and the door body is closed at an angle G. Ｂ１ After the hook is closed, the deformation of the hook portion is restored, and G Ｂ０ >G Ｂ１ and The door is angled G Ｓ When the door is closed to the end, the guide block at the top of the flip beam contacts the guide groove, and as the door body continues to close, the guide block begins to reverse due to the pressure of the groove wall of the guide groove, and G Ｂ１ >G Ｓ and The door is angled G Ｆ When the flip beam continues to close until the angle G' Ｆ and the critical value of the torsion spring is reached, and the door body Ｆ After being closed until the flip beam automatically flips over, G Ｓ >G Ｆ The refrigerator according to claim 2 .

15. The plane where the access opening of the storage compartment is located is referred to as the second reference plane M ２ When the door body is closed, a first side edge W is formed by a line where a plane on which the door front wall is located and a plane on which the door side wall is located intersect, and the second reference plane M passes through the first side edge W. ２ The plane parallel to this is the third reference plane M ３ year, When the door body is closed, the door front wall is aligned with the third reference plane M ３ When the door body is closed, the door front wall is flush with the second reference plane M ２ and a third gap μ is formed between the first hinge shaft and the end wall of the first locus groove that is away from the door side wall. １ There exists the third gap μ １ The width of the second hinge shaft is an arbitrary value between 0 mm and 0.2 mm, and a fourth gap μ is provided between the second hinge shaft and the end wall of the second locus groove at the end away from the door side wall. ２ There exists the fourth gap μ ２ width > 0, When the door body is in the closed state and the door seal continues to be pressed, the door front wall is in contact with the third reference plane M ３ , and the door front wall and the third reference plane M ３ The included angle between １ Let δ １ <0°, When the door body is in the process of closing from the open state, the door body is rotated at an angle G Ｂ０ When the door body is closed to the angle G, the hook portion comes into contact with the stopper portion, and when the door body continues to be closed, the stopper portion and the hook portion interact with each other, the hook portion is elastically deformed, the hook portion enters the hook gap, and the door body is closed at an angle G. Ｂ１ After the hook is closed, the deformation of the hook portion is restored, and G Ｂ０ >G Ｂ１ and The door is angled G Ｓ When the door is closed to the full extent, the guide block at the top of the flip beam comes into contact with the guide groove, and as the door body continues to close, the guide block begins to reverse due to the pressure of the groove wall of the guide groove, and G Ｂ１ >G Ｓ and The door is angled G Ｆ When the flip beam continues to close until the angle G' Ｆ and the critical value of the torsion spring is reached, and the door body Ｆ After being closed until the flip beam automatically flips over, G Ｓ >G Ｆ The refrigerator according to claim 2 .

16. The axis radius of the first hinge axis and the second hinge axis is r Ｔ and the minimum radius of curvature of the curved locus of the first locus line S and the second locus line K is ρ ｍｉｎ and r Ｔ and ρ ｍｉｎ is Ｔ ≦0.8ρmin is satisfied, The plane where the access opening of the storage compartment is located is referred to as the second reference plane M ２ When the door body is closed, a first side edge W is formed by a line where a plane on which the door front wall is located and a plane on which the door side wall is located intersect, and the second reference plane M passes through the first side edge W. ２ The plane parallel to this is the third reference plane M ３ year, When the door body is closed, the door front wall is aligned with the third reference plane M ３ When the door body is closed, the door front wall is flush with the second reference plane M ２ and a third gap μ is formed between the first hinge shaft and the end wall of the first locus groove at the end away from the door side wall. １ There exists the third gap μ １ is an arbitrary value between 0 mm and 0.2 mm, and a fourth gap μ is provided between the second hinge shaft and the end wall of the second locus groove at the end away from the door side wall. ２ exists, and the fourth gap μ ２ The width of is greater than 0, When the door body is in the closed state and the door seal continues to be pressed, the door front wall is in contact with the third reference plane M ３ , and the door front wall and the third reference plane M ３ The included angle between １ Let δ １ <0°, When the door body is in the process of closing from the open state, the door body is rotated at an angle G Ｂ０ When the door body is closed to the angle G, the hook portion comes into contact with the stopper portion, and when the door body continues to be closed, the stopper portion and the hook portion interact with each other, the hook portion is elastically deformed, the hook portion enters the hook gap, and the door body is closed at an angle G. Ｂ１ After the hook is closed, the deformation of the hook portion is restored, and G Ｂ０ >G Ｂ１ and The door is angled G Ｓ When the door is closed to the end, the guide block at the top of the flip beam contacts the guide groove, and as the door body continues to close, the guide block begins to reverse due to the pressure of the groove wall of the guide groove, and G Ｂ１ >G Ｓ and The door is angled G Ｆ When the flip beam continues to close until the angle G' Ｆ and the critical value of the torsion spring is reached, and the door body Ｆ After closing to , the flip beam automatically flips over and Ｓ >G Ｆ and The door body is in the closed state at the maximum angle G ｍａｘ When the door is opened to the full extent, a separation gap μ is formed between the second hinge shaft and the end of the second locus groove close to the door side wall. ０ exists, and the separation gap μ ０ 3. The refrigerator according to claim 2, wherein the width of the second hinge shaft is greater than 0, so that the second hinge shaft does not contact the end of the second track groove and there is no interaction force.

17. The door is angled G Ｂ０ From angle G Ｂ１ When the door is closed to the angle G, the elastic deformation of the hook portion reaches the maximum deformation in the process of closing the door. Ｂ１ After the hook is closed, the deformation of the hook portion is restored, and G Ｂ０ >G Ｂ１ and The door is angled G Ｓ When the flip beam is closed to the position shown in FIG. 1, the guide block at the top of the flip beam contacts the guide groove, and G Ｂ１ >G Ｓ and The door is angled G Ｓ From angle G Ｆ When the flip beam continues to close until the angle G' Ｆ and the critical value of the torsion spring is reached, and the door body Ｆ After being closed until the flip beam automatically flips over, G Ｓ >G Ｆ The refrigerator according to claim 2 .

18. The door body is in a closed state and has a maximum angle G ｍａｘ During the process of opening the door to the door frame, the positioning center axis P of the first hinge shaft moves in a single direction toward the door side wall relative to the first locus groove, thereby moving the door body laterally inward, The first locus line S is a first positioning point P １ From the door, the door first extends in a direction approaching the door side wall, and then extends along a curve in a direction approaching the door side wall and the door front wall to a sixth positioning point P ６ and the sixth positioning point P ６ is the first positioning point P １ 3. The refrigerator according to claim 1, wherein the door is positioned closer to the door side wall and closer to the door front wall than the door side wall and the door front wall.

19. The second locus line K is connected to the first guide point Q １ From the sixth guide point Q along the curve in a direction away from the door front wall and approaching the door side wall ６ 19. The refrigerator according to claim 18, wherein the distance between the second locus line K and the door front wall first increases and then decreases along a direction from an end away from the door side wall toward the door side wall.

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