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 having 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 appliances, 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 beauty and simplicity in the interior, more and more consumers are choosing built-in refrigerators.

[0004] A built-in refrigerator is fitted into a matching cabinet, and the heat dissipation cycle is formed by the floor legs, back panel, and top panel, so that 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, the refrigerator 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 arranged opposite to each other. The guide groove is arranged at the top of the storage compartment, and the hinge assembly is arranged 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. A center locus line of the first locus groove has a straight locus segment and a curve locus segment connected to each other, and the curve locus segment is located on a side of the straight locus segment close to the door side wall. The first hinge shaft fits with the first locus groove and is movable relative to the first locus groove. The second hinge shaft fits with the second locus groove and is movable relative to the second locus groove. The door body is connected to the box body via the hinge assembly to open and close the storage box. The first track groove and the second track groove are provided at an end of the door body close to the hinge assembly. The door body includes a door side wall and a second mating part. The door side wall is a side wall of the door body close to the hinge assembly. The second mating part is locked or unlocked with the first mating part. The flip beam is provided on one of the two door bodies and is located at an end of the one door body close to the other door body. The guide block is located at a 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 amount of the second mating part reaches a predetermined threshold value, and the central axis of the first hinge axis is located at a first contact positioning point on the straight line trajectory segment. When the door body is closed to a second fitting 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 straight path segment. The first critical angle is equal to or greater than the second fitting angle. The second contact positioning point is aligned with the first contact positioning point or is farther away from the door side wall than the first contact positioning point. [Brief description of the drawings]

[0006] In order to more clearly describe the technical aspects of the embodiments of the present disclosure, the drawings used in some embodiments of the present disclosure are 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. In addition, the drawings described below can be regarded as schematic diagrams, without any limitation on the actual dimensions of the products, the actual processes of the methods, and the actual timing of the signals according to the embodiments of the present disclosure. [Figure 1] FIG. 1 is a perspective view of a refrigerator according to some embodiments. [Diagram 2] FIG. 1 is a plan view of some embodiments. [Diagram 3] FIG. 1 is a structural schematic diagram of a hinge assembly of a refrigerator according to some embodiments. [Figure 4] FIG. 2 is an exploded view of a top right corner hinge assembly of a refrigerator in accordance with some embodiments. [Diagram 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 some embodiments. [Figure 6] FIG. 1 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. 11 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. 11 is a structural diagram of a hinge assembly when a door body is opened to φ=G3 in a refrigerator according to some embodiments. [Figure 9] FIG. 11 is a structural diagram of a hinge assembly when a door body is opened to φ=G4 in a refrigerator according to some embodiments. [Figure 10] FIG. 1 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] 1 is a schematic diagram of the motion trajectory for the hinge assembly of the first side edge W and the second side edge N in embodiment 1 of a refrigerator according to some embodiments. [Figure 12] 11 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. 11 is a diagram showing the position of a first hinge shaft relative to a first locus groove and the position of a second hinge shaft relative to a second locus groove when a door body in a refrigerator according to an embodiment 1 of some embodiments is opened to φ=G1. [Figure 14] FIG. 11 is a diagram showing the position of a first hinge shaft relative to a first locus groove and the position of a second hinge shaft relative to a second locus groove when a door body in a refrigerator according to an embodiment 1 of some embodiments is opened to φ=G2. [Figure 15] FIG. 11 is a diagram showing the position of a first hinge shaft relative to a first locus groove and the position of a second hinge shaft relative to a second locus groove when a door body in a refrigerator according to an embodiment 1 of some embodiments is opened to φ=G3. [Figure 16] FIG. 11 is a diagram showing the position of a first hinge shaft relative to a first locus groove and the position of a second hinge shaft relative to a second locus groove when a door body in a refrigerator according to an embodiment 1 of some embodiments is opened to φ=G4. [Figure 17] FIG. 11 is a diagram showing the position of a first hinge shaft relative to a first locus groove and the position of a second hinge shaft relative to a second locus groove when a door body in a refrigerator according to an embodiment 1 according to some embodiments is opened to φ=Gmax. [Figure 18] FIG. 11 is a diagram showing a fitting relationship between a first hinge shaft and a first locus groove in a refrigerator according to a first embodiment of the present invention; [Figure 19] FIG. 11 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] FIG. 2 is a partial view of a door body in a closed state in a refrigerator according to a first embodiment of some embodiments. [Figure 21] FIG. 2 is a partial view of a door body of a refrigerator according to a first embodiment when the door body is opened to a first opening angle s according to some embodiments. [Figure 22] FIG. 2 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. 2 is a partial view of a refrigerator according to a first embodiment of the present invention when the door body is opened to a maximum angle t. [Figure 24] FIG. 11 is a diagram showing a movement state of a roll along a convex curve in a refrigerator according to a second embodiment of the present invention. [Diagram 25] FIG. 11 is a diagram showing a position of a first hinge shaft relative to a first locus groove and a position of a second hinge shaft relative to a second locus groove when a door body is closed in a refrigerator according to a third embodiment of some embodiments. [Figure 26] FIG. 11 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 a third embodiment of the present invention; [Figure 27] FIG. 11 is a diagram showing the position of the first hinge axis relative to the first locus groove and the position of the second hinge axis relative to the second locus groove during the process in which the door body is closed from φ=G0 in a refrigerator according to a third embodiment of some embodiments. [Figure 28] FIG. 11 is a diagram showing the relative position between the flip beam and the box when the door is open in Example 4 of the refrigerator according to some embodiments. [Figure 29] FIG. 11 is a diagram showing the relative position between the flip beam and the box when the door is open in Example 4 of the refrigerator according to some embodiments, from another perspective. [Diagram 30] FIG. 13 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 Example 5 of a refrigerator according to some embodiments. [Diagram 31] FIG. 13 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. [Diagram 32] FIG. 13 is a diagram showing the positional relationship of the first hinge shaft to the first locus groove and the positional relationship of the second hinge shaft 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. [Diagram 33]FIG. 13 is an exploded view of the upper end of the door body and the mounting block in a refrigerator according to a sixth embodiment of the present invention. [Diagram 34] FIG. 13 is another exploded view of the door body upper end and the mounting block in the refrigerator according to the sixth embodiment of some embodiments. [Diagram 35] FIG. 13 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. [Diagram 36] FIG. 13 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. 13 is a structural diagram 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 39] FIG. 13 is a perspective view of a hinge plate and a lock structure when a door body is open in a refrigerator according to a sixth embodiment of the present invention. [Diagram 40] FIG. 13 is a structural diagram of a hinge plate and a lock structure when a door body is open in a refrigerator according to a sixth embodiment of the present invention. [Diagram 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. [Diagram 42] FIG. 13 is a structural diagram 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. [Diagram 43] FIG. 13 is a perspective view of a hinge plate and a lock structure when a door body is opened to a maximum angle in a refrigerator according to a sixth embodiment of the present invention. [Diagram 44] FIG. 13 is a structural diagram of a hinge plate and a lock structure when a door body is opened to a maximum angle in a refrigerator according to a sixth embodiment of the present invention. [Diagram 45]FIG. 13 is a diagram showing the relative positions of the first hinge axis contacting the first locus groove and the second hinge axis contacting the second locus groove when the door body in Example 7 of the refrigerator according to some embodiments is opened to the maximum angle. [Figure 46] FIG. 13 is a structural diagram 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 47] FIG. 13 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. 13 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. 13 is a diagram showing the assembly structure of the upper end of the door body and the mounting block in Example 9 of the refrigerator according to some embodiments at a different viewing angle. [Figure 50] FIG. 13 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. 13 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] FIG. 13 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 a refrigerator according to a tenth embodiment of some embodiments. [Diagram 53] This is a structural diagram of the door body, track block and lock block in Example 10 of the refrigerator according to some embodiments when the door body is closed to GS. [Figure 54] This is a structural diagram of the relative positions of the door body, the track block and the guide groove when the door body is closed up 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 greater than GS (GB1>GS) in a refrigerator according to a tenth embodiment of some embodiments. [Figure 56]It is a diagram showing the state of the hook and the stopper part when GB1 is less than GF (GB1 < GF) in Example 10 of the refrigerator according to some embodiments, and the state of the guide block and the guide groove. [Figure 57] It is a diagram showing the state of the lock hook and the stopper part when GB1 is equal to GF (GB1 = GF) in Example 10 of the refrigerator according to some embodiments, and the state of the guide block and the guide groove. [Figure 58] It is a diagram showing the structure of the hinge when the door body is in the closed state in Example 11 of the refrigerator according to some embodiments. [Figure 59] It is a diagram showing the structure of the hinge when the door body is in the closed state in Example 11 of the refrigerator according to some embodiments, and the first positioning point P1 is located on the side closer to the door side wall of the angular bisecting plane H. [Figure 60] It is a diagram showing the structure of the hinge when the door body is in the closed state in Example 11 of the refrigerator according to some embodiments, and the first positioning point P1 is located on the side away from the door side wall of the angular bisecting plane H.

Mode for Carrying Out the Invention

[0007] Hereinafter, with reference 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 otherwise indicated by the context, in the present specification and claims, the term "comprise" and other forms, 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 of the specification, the terms "one embodiment," "some embodiments," "exemplary embodiments," "examples," "specific examples," "some examples," and the like, are intended to indicate that a particular feature, structure, material, or characteristic associated with this embodiment or the examples is included in at least one embodiment or example of the present disclosure. General expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, a particular feature, structure, material, or characteristic described may be included in any one or more embodiments or examples in any suitable manner.

[0009] In the following, 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 the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0010] In describing some embodiments, the terms "coupled," "connected," and expressions derived therefrom may be used. For example, in describing some embodiments, the term "connected" may be used to indicate that two or more components have direct physical or electrical contact with each other. Or, in describing some embodiments, the term "coupled" may be used to indicate that two or more components have direct physical or electrical contact with each other. However, the terms "coupled" or "communicatively coupled" may mean that two or more components do not have 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 the present 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 the three combinations of 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 average within an acceptable range of deviation of the particular value, where the acceptable range of deviation is determined taking into account the measurement contemplated by one of ordinary skill in the art and the error associated with measuring the particular quantity (i.e., limitations of the measurement system).

[0016] implies openness and inclusiveness, since 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.

[0017] Hereinafter, an embodiment 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] In a first embodiment of the present disclosure, a refrigerator 1 is provided. 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 that is connected to the outside of the content container to form the exterior of the refrigerator, and a heat insulating layer that is 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. Note that the types and arrangements 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 the storage compartment or take food out of the storage compartment through this access opening. To open and close the access opening of the storage compartment, a rotatable door body 30 is provided on the box 10. For example, the door body 30 is rotatably connected to the box body 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 sidewall and the right sidewall of the box 10) and a second body sidewall (i.e., the other of the left sidewall and the right sidewall of the box 10) that are opposed to 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 opposite the door front wall 33, and a door side wall 32 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 the door side wall 32 of the door body 30 intersect to form a first side edge W, and the door side wall 33 and the 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-down direction shown in FIG. 1) is formed. For convenience of explanation, an arbitrary 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 plane 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 body 30. When the door body 30 is closed, the door seal 5 surrounds the access opening and is attached to the front end surface of the box body 10, effectively sealing the connection position between the door body 30 and the box body 10, ensuring that the door body 30 seals the access opening and preventing cold air leakage. For example, the door seal 5 is annular.

[0028] 2 to 4, the hinge assembly includes a first hinge shaft 41 (i.e., a main hinge shaft) and a second hinge shaft 42 (i.e., a sub-hinge shaft) located on the side where the first hinge rod 41 is separated from the first body side wall. A first locus groove 50 and a second locus groove 60 are provided on an 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. In the process of the door body 30 rotating to open and 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 10. The hinge plate 40 includes a first connection portion 401 connected to the box 10, and an extension portion 402 extending forward (i.e., in a predetermined direction) from the first connection portion 401 and having a horizontal plate shape. The first connection portion 401 may be connected to the box 10 by a fastener such as a screw, a pin, or a bolt.

[0030] 4, for example, for 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 integrally formed, 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 the extension portion 402 and extend vertically downward.

[0031] For the hinge assembly located at the lower end of the door body 30, a first connection part 401 is 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 in correspondence with the position of the hinge plate 40. For example, the two first locus grooves 50 located at the upper and lower ends of the door body 30 correspond in position in the height direction of the refrigerator 1, and the two second locus grooves 60 correspond in position in the height direction of the refrigerator 1, thereby ensuring the coincident movement of the upper and lower ends of the door body 30 and allowing the door body 30 to be opened and closed smoothly.

[0033] 2, in this embodiment, the plane on which the sidewall of the box 10 closest to the hinge plate 40 (i.e., the first body sidewall) 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 the door body 30 is closed, the plane on which the door front wall 31 is located is substantially flush with the plane on which the front end face of the cabinet 100 is located (i.e., the distance between the two planes is less than 2 mm). In order to place the refrigerator 1 in the cabinet 100 for use, a gap α is often left between the cabinet 100 and the first main body side wall of the refrigerator 1 (i.e., the reference plane M0). For example, the width of the 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 too far during the process of the door body 30 rotating, to avoid the first side edge W colliding with the cabinet 100 and causing the door body 30 to not open normally.

[0036] In short, when the door body 30 may move to the inside during rotation, the first side edge W does not exceed the reference plane M0. For example, when the hinge plate 40 is provided on the right side of the door body 30, if the inside is on the left side of the reference plane M0, the door body 30 needs to move to the left during rotation. When the hinge plate 40 is provided on the left side of the door body 30, if the inside is on the right side of the reference plane M0, the door body 30 needs to move to the right 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] Illustratively, the straight groove segment extends in a direction approaching 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 in a direction approaching 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 door rear wall 33 toward the door front wall 31. In this way, in the process of opening the door body 30, the door body 30 rotates and first moves in the inner side, and then moves 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 the wear of 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 trajectory groove 50 on the side of the second trajectory groove 60 closer to the door front wall 31 and the door side wall 32, the door body 30 can move a certain distance inward as it rotates, compensating for the outward displacement of the first side edge W due to the rotation of the door body 30. This makes it possible to reduce the distance by which the first side edge W exceeds the reference plane M0, and to avoid interference between the first side edge W and the box body 100 when the door body 30 is opened.

[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 convenience of explanation, in the present 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 onto a plane on which the top wall of the box body 10 is located, the line segment PQ is written as the axis 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 along the first locus line S of the positioning central axis P, and the movement of the second hinge shaft 42 along the second locus groove 60 corresponds to the movement along the second locus line K of the guide central axis Q. This allows the door body 30 to move a certain distance inward while rotating, compensating for the outward displacement of the first side edge W due to the rotation of the door body 30, thereby making it possible to avoid 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 a plane on which 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 on which the top wall of the box body 10 is located, the movement of the axis line segment PQ with respect to the trajectory 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 is 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. 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 linearly 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 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 linearly 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 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 linearly 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 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 along a curve to the sixth guide point Q6 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, during the process of opening the door body 30, the door body 30 can be moved inward by a certain distance, and the stability of the door body 30 during rotational opening can be ensured.

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

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

[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 angle at which the refrigerator opens is G max (i.e., the fifth angle) is greater than 90°. max When the door body rotates and opens to a different angle in the process of opening to the door, 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 indicates 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 loading / unloading 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 locus line S, and the guide central axis Q is located at a first guide point Q1 on the second locus 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 shaft 41 moves toward the door side wall 32 along the straight line trajectory segment of the first trajectory line S, and the second hinge shaft 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 line 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 Fig. 6 and Fig. 13, φ=G1(G1∈(0°, G2)) represents a position within the opening angle range for comparison with 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 the 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 the second guide point Q2 on the second locus line K, and the second guide point Q2 is located on the side closer to the door side wall 32 than the first guide point Q1 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 an end point closer to the door side wall 32 of the straight trajectory segment. In other words, the third positioning point P3 is an end point of the movement of the first hinge shaft 41 along a straight line in a direction approaching the door side wall 32 relative to the first trajectory groove 50.

[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 closer to the door side wall 32 and farther from the door front wall 31 than the second guide point Q2. 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 in which the door body 30 opens 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 curve in a direction approaching the door side wall 32 and farther 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 door front 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 door front wall 30 along the second trajectory line K.

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

[0070] 8 and 15, when the door body 30 is opened to G3, the positioning central axis P is located at the fourth positioning point P4 on the first locus line S, and the fourth positioning point P4 is located on the side closer to the door side wall 32 and the door front wall 31 than the third positioning point P3. The guide central axis Q is located at the fourth guide point Q4 on the second locus line K, and the fourth guide point Q4 is located on the side closer to the door side wall 32 than the third guide point Q3 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] As shown in Fig. 9 and Fig. 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 the 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 with respect to the first locus groove 50 is located on the side closer to the door side wall 32 than the position of the first hinge shaft 41 with respect 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 on the side 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, max In this process, the first hinge shaft 41 moves 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 second hinge shaft 42 moves along the second trajectory line K in a direction approaching the door side wall 32 and the door front wall 30. max is 116° (i.e., G max =116°).

[0074] As described above, the opening angle φ ∈ (G4, G max ], the movement tendency of the gate body 30 does not change, and the gate 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 with respect to the first locus line S of the curved locus segment is different, and the position of the second hinge shaft 42 with respect 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 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, and the sixth positioning point 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, and the sixth guide point 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 in sequence along the first trajectory line S. In addition, the second positioning point P2, the third positioning point P3, and the fourth positioning point P4 are distributed along a 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 locus line S. Also, 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 locus 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 locus 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 turn as the first angle, the second angle, the third angle, the fourth angle and the maximum angle.

[0079] As a result, the door body 30 is rotated from the closed state to the maximum angle G maxIn the process of opening the door body 30, the first hinge shaft 41 always moves relative to the first track 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 track groove 60 and always moves in a direction approaching the door side wall 32. That is, in the entire opening process of the door body 30, the first hinge shaft 41 and the second hinge shaft 42 maintain a unidirectional movement without changing the direction so that the directions in which the first hinge shaft 41 and the second hinge shaft 42 receive the force are always the same, thereby improving the feeling of opening and closing the door body 30 and the user experience, and further extending the life of the first track groove 50 and the second track groove 60. In addition, in the process of opening the door body 30, the first hinge shaft 41 and the second hinge shaft 42 maintain a movement such that the change in the acceleration of the door body 30 is small, thereby improving the stability of opening 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 G4 to G max In the process of opening the door to the full open position, the second hinge shaft 42 moves toward the door side wall 32 relative to the second locus groove 60, and the first hinge shaft 41 moves backward 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 closer to the door side wall 32. During the process of opening the door body 30, after the guide central axis Q moves 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 gate 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 shaft 41 is opened to the position (including the first and second locus grooves 50 and 60), the positions of the two hinge shafts are determined with respect to the two locus grooves. Therefore, the fitting relationship of the first hinge shaft 41 with the first locus groove 50 and the fitting relationship of the second hinge shaft 42 with 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 (i.e., the third positioning point P3) close to the door side wall 32 of the linear trajectory segment of the first trajectory groove 50. 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 in a direction approaching 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 can divide the opening process of the door body 30 from the closed state to G max into three stages. In the following, the relative movement in the three stages will be described based on the angle of the fitting relationship between the first hinge shaft 41 and the first trajectory groove 50 and the angle of the fitting relationship between the second hinge shaft 42 and 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 along the second trajectory line K from the first guide point Q1 in a direction approaching the door side wall 32 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 line 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, in the process of the door body 30 opening from 0° to G2, the axis 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 segment PQ indicates 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 a certain distance outward 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 a certain distance inward.

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

[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 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 central axis Q moves from the third guide point Q3 along the second trajectory line K in a direction approaching the door side wall 32 and moving 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 gate body 30 is moved from G4 to G max Rotate until it opens.

[0096] During this process, the positioning central 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 central 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] With reference 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 to and opening, if the first trajectory groove 50 and the second trajectory groove 60 are stationary references, the axis 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 is understood that the axis segment PQ represents the movement of the hinge plate 40 provided on the box body 10. Therefore, when the door body 30 is taken 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 open position, 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 taken as a stationary reference (or the hinge plate 40 is taken as a stationary reference), the door body 30 moves from G2 to G max In the process of opening to the full width, the door body 30 (or the first trajectory groove 50 and the second trajectory groove 60) rotates counterclockwise relative to the box body 10 and moves inward. That is, the door body 30 moves inward a certain distance while opening.

[0101] In the above-mentioned opening process of the second and third stages, the door body 30 rotates from G2 to G max until the first hinge axis 41 moves along the curved trajectory segment of the first trajectory groove 50.

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

[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 30 to the closed position, the door 30 always moves inward with respect to the position of the first hinge shaft 41 relative to the central axis P when the door 30 is closed. max During the process of opening the door 30 to the full extent, the door body 30 always moves inward with respect 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 30 to the first initial position, the distance between the first hinge shaft 41 and the first initial position gradually increases. max During 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 gate 30 is G2 to G max In the process of opening the door 30 to the full width, the first hinge shaft 41 moves in a direction approaching the door side wall 32 and the door front wall 31 along a curved trajectory segment of the first trajectory line S. When the door body 30 rotates and opens by unit angles, 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 when the door 30 rotates and opens by a unit angle is 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 when the door 30 rotates and opens by a unit angle is 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 the door body 30 opens per unit angle is large, so that the door body 30 can move inward quickly and completely in the first stage. Therefore, the outward displacement of the first side edge W due to the rotation of the door body 30 can be effectively compensated for, and interference between the door body 30 and the cabinet 100 can be prevented.

[0108] In the first stage, the first hinge shaft 41 quickly moves 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 pressing force 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 essence of the inward movement of the refrigerator door body 30 is 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 to reduce 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 speed 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 movement process of the door body 30 opening from the closed state to G1.

[0113] In the above configuration, the first hinge axis 41 moves rapidly relative to the linear trajectory segment of the first trajectory groove 50, which can effectively reduce the compression of the side seal 5a perpendicular to the plane in which the access opening is located during the process of opening the door body 30, and reduce the resistance force when the door body 30 opens. In addition, the transition from the first stage of opening the door body 30 from the closed state to G1 to the second stage of opening from G1 to G2 is smooth, and the door body 30 does not need to jump, improving the 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, that is, 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. The approximately elliptical arc groove is a groove having a central locus line of an approximately ellipse (for example, the second locus line K). The approximately elliptical arc includes a standard elliptical arc (i.e., a part of a standard ellipse) and a non-standard elliptical arc that is different from the standard elliptical arc due to manufacturing, assembly errors, or slight deformation, but still has elliptical arc locus characteristics. In other words, a groove whose central locus line can be approximated to an elliptical arc is an approximately elliptical arc groove.

[0116] In some embodiments, in a stage (i.e., the first stage) in which the first hinge shaft 41 moves linearly along the linear groove segments of the first track groove 50, the average moving speed of the first hinge shaft 41 relative to the linear groove segments of the first track groove 50 is written as a first average speed v1. In a stage (i.e., the second stage and the third stage) in which the first hinge shaft 41 moves curvedly along the curved groove segments of the first track groove 50, the average moving speed of the first hinge shaft 41 relative to the curved groove segments of the first track groove 50 is written 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 in which the door body 30 opens 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 open position is larger than the average moving speed of the first hinge shaft in the process of opening the door to the full open position. With the above configuration, the moving speed of the door body 30 in the second and third stages can be reduced, the door body can be opened quickly, and when the door is opened with a large force, the hinge shaft can be prevented from colliding with the track groove, thereby extending the life of the track groove.

[0118] In some embodiments, G2=45° is set. That is, when the door body 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 body 30, i.e., the inward movement. In the process of the door body 30 opening from the closed state to 45°, the door body 30 mainly moves inward. Exemplarily, the straight groove segment of the first track groove 50 is parallel to the door front wall 31 to increase the efficiency of the inward movement of the door body 30.

[0119] During the opening process of the door body 30, the distance between a 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 30 opens to the angle φ, the minimum distance is L min (φ), 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 in which the access opening is located (i.e., the included angle between the door side wall 32 and the plane in 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 from 90° to the maximum angle G max In the process of opening the door 30 to the upper limit, 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, which is restricted by the cabinet 100, 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 During the process of opening to the full opening, 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 in a direction 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 you write this, the gate body 30 is at a maximum angle G from 90°. max During the process of opening to the door body 30, the door body 30 moves inward and forward, reducing the restricting effect of the cabinet 100 on the door body 30, thereby increasing the maximum angle at which the door body 30 can be opened. max >G` max It is.

[0123] If the refrigerator is not embedded in the cabinet 100, the opening of the door body 30 is not limited by the cabinet 100. For example, the maximum angle at which the door body 30 can be opened is G max+ΔG, where ΔG>0°. For example, G max is any value between 90° and 105°, and ΔG is any 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, the box body 10 is likely to expand, making the front of the box body 10 difficult to see. Therefore, in order to ensure the appearance, when the door body 30 is closed, the door side wall 32 is located outside the reference plane M0, and the box body 10 can be blocked. In this embodiment, when the door body 30 is closed, the distance between the plane on which the door side wall 32 is located 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 separated 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 as "parallel" or "approximately parallel" if the included angle between the two planes is less than 3°. In other words, "approximately parallel" includes the mathematically defined "parallel" and the relationship between two surfaces having an included angle of less than 3° from 0°.

[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 written as a side seal edge F. The included angle between the plane on which the face of the door seal 5 away from the door front wall 31 is located and the first body side wall is written as a second angle γ.

[0128] Door body 30 is at maximum angle G from 90° max As the door continues to open to the 90° position, 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 spaced from the surface of the door front wall 31 when the door body 30 is opened to the 90° position.

[0129] That is, when the door body 30 is at a 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 away from the door front wall 31 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 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. In other words, when the door body 30 is opened from 90 degrees to the maximum angle G, max In the process of opening to the full width, 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 (e.g., greater than 90°), making it easier for a user to put in or take out items stored on the shelf of the door 30, and reducing blockage of the entrance by the door 30. In this way, the size of the drawer installed in the storage compartment can be increased, and the space utilization rate of the storage compartment can be increased.

[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 the full extent, the door front wall 31 comes into contact with the cabinet 100. In this case, in the projection onto a 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 the full extent.

[0133] That is, the gate body 30 is at the maximum angle G maxWhen the door is opened to 90°, the included angle between the side seal ridge F of the door seal 5 close to the door side wall and away from the door front wall, the straight line on which the second side ridge N of the door body 30 is located, 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 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 ridge N, and to set 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 located away from the surface of the door front wall 31 is written as the fourth reference plane M4. The fourth reference plane M4 is stationary with respect to the box body 10 and does not move with the movement of the door body 30. 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 gate 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. 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 rotated at the maximum angle G max When fully opened, in the projection of the plane on which the top wall of the box 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 straight line FN determined by the projection points F and N and the fourth reference plane M4 is less than 15°. Alternatively, the straight line FN is approximately parallel to the fourth reference plane M4 (angle 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 α. That is, the first reference plane M1 is a plane close to the inner wall of the box 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, in the process of opening the door body 30 relative to the box body 10, the first reference plane M1 and the second reference plane M2 do not move with the movement of the door body 30. Note that the second reference plane M2 is a plane on which the access opening defined by the box body 10 is located, and does not change due to the presence of other members such as a deformable door seal at the access opening of the box body.

[0140] The gate 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 toward the second reference plane M2. The second side edge N first moves in a direction away from the first reference plane M1 and moves toward 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 first side edge W, the curved locus due to the movement of the first side edge N is a smooth curve, and the curved locus due to the movement of the second side edge N is 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 gate 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 gate 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 (always held). max In the process of opening the door 30 to the 90° position, the side seal edge F moves toward the first reference plane M1 and away from the second reference plane M2. That is, when the door body 30 is opened to the 90° position, the distance between the side seal edge F and the first reference plane M1 becomes the 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 the full width, the movement locus of the side seal edge F is an approximately circular arc. In other words, in the process of opening the door body 30, the side seal edge 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] In some embodiments, as shown in Figures 18 and 19, a first gap J1 exists between an 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 an 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 ±1mm is left when assembling the hinge shaft and the track groove. The above configuration is advantageous for manufacturing and process adjustment. During the product assembly process, the upper and lower ends of the door body 30 are easily misaligned, and it is necessary to install a washer between the hinge shaft and the track groove to adjust it.

[0148] For example, the first gap J1 is 2 mm, and the second gap J2 is equal to or larger than the first gap J1. In this way, 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 body 30 is opened, the moving direction of the first hinge shaft 41 relative to the first locus groove 50 is written as a first displacement direction, and the moving direction of the second hinge shaft 42 relative to the second locus groove 60 is written as a second displacement direction. The included angle between the first displacement direction and the second displacement direction is written as a displacement angle ω. In the process of the door body 30 opening from the closed state to 90°, the displacement angle ω is kept constant or changes within a predetermined range. For example, in the process of the door body 30 opening from the closed state to 90°, the change amount of the displacement angle ω is within a range of 0° to 8°.

[0150] With the above configuration, the displacement angle can be varied within a small range, i.e., kept relatively constant. In this way, when the user opens the door with a certain force (about 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 much, which can effectively reduce the wear of the track groove.

[0151] In some embodiments, the door 30 rotates around a transition point during the opening process. 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) TIFF2025507784000083.tif7170 (Formula 2) TIFF2025507784000084.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 is 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 is 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 is 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 is 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 PQ 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 in contact with 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 retracts into the first trajectory groove 50.

[0158] Note that the second opening angle s corresponds to the second angle G2 in Embodiment 1. In this embodiment, for convenience of explanation, the second opening angle is denoted as s. In any of the above embodiments, there is no correspondence 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) TIFF2025507784000085.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) TIFF2025507784000086.tif7170

[0162] The position of point Q before rotation is represented by the following formula 5. (Formula 5) TIFF2025507784000087.tif7170

[0163] The position of point P after rotation is represented by the following formula 6. (Formula 6) TIFF2025507784000088.tif6170

[0164] The position of point Q after rotation is represented by the following formula 7. (Formula 7) TIFF2025507784000089.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) TIFF2025507784000090.tif7170

[0166] The position of point P after rotation is expressed by the following equation 9. (Formula 9) TIFF2025507784000091.tif7170

[0167] The position of point Q after rotation is expressed by the following equation 10. (Formula 10) TIFF2025507784000092.tif6170

[0168] The position of point P before rotation is expressed by the following equation 11. (Formula 11) TIFF2025507784000093.tif18170

[0169] The position of point Q before rotation is expressed by the following equation 12. (Formula 12) TIFF2025507784000094.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) TIFF2025507784000095.tif7170

[0171] The position of point P before rotation is expressed by the following equation 14. (Formula 14) TIFF2025507784000096.tif7170

[0172] The position of point Q before rotation is expressed by the following equation 15. (Formula 15) TIFF2025507784000097.tif6170

[0173] The position of point P after rotation is expressed by the following equation 16. (Formula 16) TIFF2025507784000098.tif17170

[0174] The position of point Q after rotation is expressed by the following equation 17. (Formula 17) TIFF2025507784000099.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 of the above, the door body 30 is changed from the closed state to the G max During the process of opening to the full extent, the door body 30 rotates around the dynamic change point, and the door body 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 smoothly transitioned and connected. Exemplarily, 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 planar 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 locus groove 50, and the second hinge shaft 42 can move smoothly relative to the second locus 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 locus groove 50 is continuous and uninterrupted, and the movement of the second hinge shaft 42 relative to the second locus 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 needs to 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 motion profile of the cam 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 it can be expressed as Equation 18. (Formula 18) TIFF2025507784000100.tif7170

[0188] (1) As shown in Fig. 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 portion of the theoretical profile curve (i.e., the radius of curvature of the sharpest part).

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

[0190] (3) As shown in Fig. 24(d), ρ min <r T If ρ'<0, the intersection phenomenon will occur in the actual contour curve, and the actual contour curve above the intersection 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 cross sharply anywhere, the roller radius r T is the minimum radius of curvature of the outwardly 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 theoretical profile curve of the first trajectory groove 50, and the cam theoretical 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 close 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 theoretical profile curve of the second locus groove 60, and the cam theoretical 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 axis 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, so that the first hinge shaft 41 moves smoothly and wear of the second locus groove 60 can be reduced.

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

[0195] For example, at least a part 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, when 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 to the sixth positioning point P6 in a direction approaching the door side wall 32 and moving away from the door front wall 31, the part of the second trajectory line K close to the door side wall 32 may be set as a curve extending in a direction approaching the door side wall 32 and moving away from the door front wall 31. In this case, the curved trajectory segment of the first trajectory line S and the part of the second trajectory line K close to the door side wall 32 are set as inwardly concave curves, so that the first hinge shaft 41 and the second hinge shaft 42 move smoothly along them.

[0196] Example 3

[0197] The configuration of Example 3 is the same as that of Example 1 and Example 2, except that, as shown in Figures 25 to 27, 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 a 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, in the process of the door body 30 opening from the closed state to G0, if the door body 30 (or the first trajectory groove 50 and the second trajectory groove 60) is used as a stationary reference, when the door body 30 is closed, the second hinge axis 42 performs an approximately rotational motion with the central axis of the first hinge axis 41 as the rotation axis.

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

[0202] For example, the approximate rotational movement includes the rotational movement of the second hinge shaft 42 around the central axis of the moving first hinge shaft 41, and when the door body 30 rotates per unit angle, the displacement distance of the central axis of the first hinge shaft 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] Exemplarily, the length of the line segment P0P1 on the first locus arc K is within a range of 0 mm to 0.2 mm.

[0206] In the initial stage of the opening of the door body 30 (i.e., the door body 30 opens from the closed state to G0), the door body 30 mainly performs rotational movement, and 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 gate body 30 max The process of opening the lid 1 to 3 is similar to the first to third steps in the first embodiment, and will not be described further here.

[0208] Example 4

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

[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 with the guide groove 14 to realize different angle switching between the flip beam 9 and the corresponding door body 30. 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 the 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] With 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 shaft 42 performs an approximately rotational motion with the central axis of the first hinge shaft 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 object.

[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 reversal.

[0215] Due to the limitation of the trajectory characteristics in the third embodiment, when the door 30 is closed from an arbitrary angle larger than G0 to G0, the guide block 13 at the top end of the flip beam 9 contacts the guide groove 14 on the box body 10, and the guide block 13 starts to enter the guide groove 14. When the door 30 is closed, the flip beam 9 completes the reversal.

[0216] The arrangement of Example 4 ensures that the biasing force of the flip beam 9 on the door body 30 to reverse is not canceled as the door body 30 moves outward, and prevents the guide block 13 from getting stuck due to incomplete reversal after entering the guide groove 14, effectively guarantees that the door body 30 is closed in a predetermined position, and ensures the effectiveness of the low-temperature storage of 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 moving from a closed state toward the box body 10 to continue the closed state.

[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 the reference plane M0 intersect at the theoretical first side edge W when the door body 30 is closed. The third reference plane M3 is a reference plane that does not move and is stationary with respect to the box body 10 while the door body 30 is opening or closing relative to the box body 10.

[0220] In this embodiment, referring to Fig. 30, when the door body 30 is in a 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 a 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] As shown in FIG. 31, when the door body 30 is in the closed state and the door seal 5 is continuously 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 to the side of the third reference plane M3 closer to the box body 10. An angle δ1 exists 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 δ1, and the included angle δ1 is an arbitrary 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 along the closing direction, the second hinge shaft 42 performs a substantially rotational movement with the central axis of the first hinge shaft 41 as the rotation axis. That is, when the door body 30 continues to be closed 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 a 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 an arbitrary 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 separated 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 separated 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 central 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 written as the retaining trajectory segment Q'Q1. Exemplarily, the retaining trajectory segment Q'Q1 extends from the first guide point Q1 toward the side approaching 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. When the door body 30 continues to move in the closing direction from the closed state, the first hinge shaft 41 is held at the first positioning point P1 (the distance of movement toward the side away from the door side wall 32 from 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 reserved guide point Q'. The rotation angle at which the door body 30 continues to move toward the box body 10 is written as G'. In this embodiment, G'≧δ1, which prevents the second hinge shaft 42 from receiving an impact on the end of the second locus groove 60 away from the door side wall 32 when the door body 30 is swung by the box body 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) serves as a stationary reference, and the second hinge shaft 42 performs an approximately rotational motion with the central axis of the first hinge shaft 41 as the axis of rotation.

[0230] For example, G' is equal to δ1, and when 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 facing 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 by taking an example of a mounting block 80 provided at the upper end of the door body 30. 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 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 that the shape of the groove is different.

[0235] The mounting block 80 includes a plate body 81, and the first locus groove 50 and the second locus groove 60 are provided on the plate body 81. The door end cover 38 located at the upper end of the door body 30 is provided with an accommodation groove 37, and the mounting block 80 is provided in the accommodation groove 37. The plate body 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 body 81 and the accommodation groove 37 are provided on the plate body 81, and are located on the edges of the first locus groove 50 and the second locus 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 bottom.

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

[0238] It can be seen that after the hinge assembly is used for a long time, dust and other foreign matter are likely to accumulate in the first track groove 50 and the second track groove 60, which affects the opening and closing of the door body. In this embodiment, when foreign matter or dust is present in the first track groove 50 and the second track groove 60, the hinge shaft is moved to any end of the track groove by opening and closing the door body, so that the dust or other foreign matter can be moved to the position of the dust removal hole 11 and discharged, 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] The dust collecting chamber 12 is provided at the bottom of the first accommodating chamber 371 and the second accommodating chamber 372. The position of the dust collecting chamber 12 corresponds to the position of the dust collecting hole 11. Dust that falls into the first track groove 50 and the second track groove 60 is discharged into the dust collecting 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 to extend the life of the hinge assembly and improve the smoothness of opening the door body 30.

[0241] Exemplarily, 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. Due to the arrangement of the first deformation gap and the second deformation gap, the first locus groove 50 and the second locus groove 60 can have a deformation space.

[0242] It is 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 service 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 an end away from the first body side wall. The mounting block 80 has a lock block with a second mating portion formed in the lock block. The second mating portion is adapted to mate with the first mating portion to lock and unlock the door 30 and the box 10.

[0244] In this embodiment, the lock block and 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 a mounting block 80 provided at the lower end of the door body 30 as an example.

[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 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 located 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 to lock the door body 30. Therefore, it is possible to prevent the door body 30 from affecting the refrigeration and freezing effect of the refrigerator due to poor closing of the door body 30.

[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 connection portion 83 and a hook portion 84. The second connection portion 83 is connected to the plate body 81, 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 door side wall 32. A screw penetrates the second connection portion 83 and is inserted into the door body 30 to fixedly connect the second connection portion 83 and the door body 30, thereby increasing the connection strength between the second connection portion 83 and the door body 30. In this way, when the lock hook 82 is separated from 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 disengage from the stopper portion 403 .

[0251] In the process of closing the door body 30, the free end of the hook portion 84 gradually approaches the stopper portion 403. When the hook portion 84 abuts against the stopper portion 403, the hook portion 84 is deformed by the reaction force of the stopper portion 403, so that the stopper portion 403 can enter the hook portion 84, and the free end of the hook portion 84 can enter the hook gap 404. In this way, the lock hook 82 can be locked to the hinge plate 40, and the door body 30 and the box body 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 described here.

[0253] For example, when the door 30 is closed from an arbitrary angle larger than a set angle (eg, 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 body 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 G1. That is, when the door body 30 is opened to G1, if the first hinge shaft 41 is moving along the straight trajectory segment of the first trajectory line S, the hook portion 84 is separated from the stopper portion 403. Alternatively, the unlocking angle is G2. That is, when the door body 30 is opened to G2, the hook portion 84 is separated from the stopper portion 403 when the central axis of the first hinge shaft 41 is moving along the straight trajectory segment of the first trajectory line S to an end point of the straight 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, in order to facilitate separation of the lock hook 82 and the stopper portion 403, the door body 30 mainly performs a rotational movement.

[0257] In some embodiments, as shown in Fig. 35 and Fig. 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 close to the door front wall 31 and the door side wall 32. The second connection part 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 connection part 83 from deforming in the direction from the door front wall 31 toward the door rear wall 33.

[0258] 35 and 36, for example, the insertion plate 86 is configured as an arc plate, and the second protrusion 35 is 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 gap groove 36 together with the second protrusion 35. The arc-shaped insertion plate fits into the arc-shaped gap groove 36, and the area limited by the gap groove 36 to the second connection portion 83 can be increased, thereby improving the connection strength between the mounting block 80 and the door body 30.

[0259] In this embodiment, the track block and the lock block of the mounting block 80 are integrally formed. In some embodiments, the track block and the lock block are set separately. 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 is mounted in 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 a locking block.

[0262] 28, the refrigerator 1 is a double door with four doors, i.e., the refrigerator 1 includes four doors 30, two of which face each other and the other two of which face each other. The refrigerator includes six hinge assemblies for fixing the four doors 30 to the box 10.

[0263] The six hinge assemblies include two upper hinge assemblies, two middle hinge assemblies, and two lower hinge assemblies. When the door body 30 is opened, the track block on the door body 30 cooperates with the hinge shaft of the hinge assembly to rotate the door body 30 and move inward, so that the distance that the first side edge W of the door body 30 exceeds the reference plane M0 becomes smaller. The middle hinge assembly includes a hinge plate and a through shaft, which extends upward and downward from the hinge shaft. The through shaft includes an upper hinge shaft and a lower hinge shaft. The upper hinge shaft is located on the upper side of the hinge plate and cooperates with the lower end of the door body 30 located above the middle hinge assembly. The lower hinge shaft is located on the lower side of the hinge plate and cooperates with the upper end of the door body 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 trajectory block at the upper end of the door body 30 for opening and closing the refrigerator compartment is the same as the trajectory block at the upper end of the door body 30 for opening and closing the freezer compartment. The trajectory 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 trajectory 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 trajectory 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 including four door bodies 30, but may also be applied to a refrigerator 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 track groove 50, the second track 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 amount of 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 10 and is close to the first main body side wall. max When the door body 30 rotates to the position limiting portion 85, the position limiting portion 85 comes into contact with the position limiting surface 405 of the hinge plate 40, preventing the door body 30 from continuing to rotate.

[0271] That is, referring to Figures 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 extending downward from the bottom surface of the door body 30 at the edge of the fitting portion 851 close to the door front wall 31. 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 a description thereof will be omitted here.

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

[0278] Example 7

[0279] In the seventh embodiment, the door body 30 is rotated at the maximum angle G maxThe principle is the same as in the first to sixth embodiments, except that the method of 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 FIG. 45 and FIG. 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 shaft 41 contacts the end of the first locus groove 50 close to the door side wall 32, and the second hinge shaft 42 contacts the end (i.e., the end) of the second locus groove 60 close 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 shaft 41 and the second hinge shaft 42 can move to the ends of the first locus groove 50 and the second locus groove 60 simultaneously. That is, the first hinge shaft 41 and the second hinge shaft 42 interact with the door body 30 at the same time, which can reduce the stress on the hinge plate 40 and is advantageous to improving the mounting stability of the hinge assembly and the box body 10.

[0281] Example 8

[0282] In comparison with Example 7, Example 8 has a gate body 30 with 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 rotates to the position limiting portion 85, the position limiting portion 85 comes into contact with 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 comes into contact with the end of the first track groove 50 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 track groove 60 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 shaft 41 contacts the end of the first track groove 50 (there is an interaction force), and the second hinge shaft 42 does not contact the end of the second track groove 60 (there is no interaction force). The first hinge shaft 41 is closer to the position limiting portion 85 than the second hinge shaft 42. The above arrangement can reduce the bending moment and stress on the hinge plate 40, which is advantageous to enhance 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 examples, the track block is attached to the position facing the hinge plate 40 on the door body 30, and the first track groove 50 and the second track groove 60 are formed in the track block.

[0287] With reference to Figs. 47 to 50, this embodiment will be described by taking 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 that the shape of the groove is different.

[0288] The track block includes a plate body 81, and the first track groove 50 and the second track groove 60 are formed on the plate body 81. The door end cover 38 located at the upper end of the door body 30 has an accommodation groove 37 formed on the side away from the hinge assembly. The plate body 81 is provided in the accommodation groove 37, and the plate body 81 fits into the circumferential groove wall of the accommodation groove 37. In this embodiment, the accommodation groove 37 is provided with an engagement member for fixing the plate body 81 so as to fixedly connect the track block and the door body 30. For example, the plate body 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 a position close to the hinge assembly of the door end cover 38. 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] For example, referring to Figures 47 and 48, the plate body 81 of the track block is fitted with the end wall of the door end cover 38 close to the hinge assembly, and is fixedly connected to the door body 30 via an engagement member. The track block and the hinge assembly are located on both sides of the end wall of the door end cover 38, respectively. 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 body 81 is formed with a plurality of fixing holes that fit with the fixing posts. By attaching the fixing posts to the fixing holes of the plate body 81, the track block can be quickly positioned on the door end cover 38.

[0291] 50 , the first track groove 50 includes a first annular plate 73 located on a side of the plate 81 away from a groove bottom of the first track groove 50, the first annular plate 73 defining a groove opening of the first track groove 50. The second track groove 60 includes a second annular plate 74 located on a side of the plate 81 away from a groove bottom of the second track groove 60. The second annular plate 74 defines a groove opening of the second track 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 body 81 is fitted with an end plate close to the hinge assembly of the door body 30. The fixing holes on the plate body 81 are fitted with the fixing posts on the door end cover 38 to ensure accurate positioning and assembly. The above-mentioned assembly method of the track block and the door end cover 38 in this embodiment can hide the track block 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 a pair. The trajectory blocks are arranged at the upper end and / or lower end of the door body 30. The trajectory block closer to 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 closer to the second body side wall at the lower end of the door body 30 of the refrigerator 1. The trajectory block closer to 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 closer to 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 trajectory blocks. The trajectory block located at the upper end of one door body 30 is the same as the trajectory 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 trajectory block structures having only trajectory grooves, which improves the versatility of parts such as the trajectory 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 is provided at the lower end of the door body 30. The lock block is located on the side of the track block that is away from the door side wall 32, and is attached to the receiving groove 37 that is located on the side of the first through hole 71 and the second through hole 72 that is away from the door side wall 32.

[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. The screw penetrates 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 is released from the stopper portion 403, only the hook portion 84 is deformed.

[0297] The lock block in this embodiment is attached to the side of the door end cover 38 close to the hinge, i.e., fixed 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 above-mentioned sixth embodiment, and the details will not be repeated here. Referring to the sixth embodiment, the hook portion 84 fits with the stopper portion 403 to realize the unlocking or locking of 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 away from the hinge assembly. And 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 Fig. 29, the refrigerator 1 includes two door bodies 30 arranged opposite to each other, and the two door bodies 30 cooperate with each other 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, and the flip beam 9 and the door bodies 30 can be switched at different angles.

[0302] 29, when the door body 30 is in an 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 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 a torsion spring. 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, as a rotating member of the flip beam 9, fits into the guide groove 14 to realize switching between different angles of the flip beam 9 and the door body 30.

[0304] The first door hinge, the second door hinge and the flip beam back are provided with through holes for inserting torsion springs, and the two door hinges are respectively connected to the flip beam back by the torsion springs. 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 torsion spring and the second torsion spring store elastic energy or release elastic energy, so that the flip beam back rotates stably or is instantly reset.

[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, in the process of closing the door body 30, the two hinge shafts move in the corresponding track grooves, and the door body 30 moves a certain distance outward 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, so that the guide block 13 at the top of the flip beam 9 gets 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 FIG. 53 and FIG. 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 rotate in the opposite direction, and the torsion spring is compressed radially. The flip beam 9 rotates at an angle G' F When the door body 30 is fully closed, the torsion spring reaches its critical value. The torque spring starts to pull after reaching the critical value, and quickly reverses the flip beam 9 in accordance with the pressure of the groove wall of the guide groove 14 until the door body 30 is fully closed. When the door body 30 is fully closed, the torsion spring's torsion force is released and the torsion spring reaches a relaxed state again. The flip beam 9 comes into contact with the seal material provided on the door body 30, which can effectively prevent the 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 flips to 45°, the critical value of the torsion spring is reached. G S can be 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 into position.

[0309] During the above-mentioned reversal of the flip beam 9, the closing force F W The gate body 30 is at 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 gate 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 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. F In the closing stage after the door is closed, the reversing force F N The combination of this and the pressure of the groove walls of the guide groove 14 causes the flip beam 9 to complete the inversion.

[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 gate body 30 is closed by applying a closing 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 is moved (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 (i.e., the first critical angle), the elastic deformation of the hook portion 84 reaches a predetermined threshold value. That is, the elastic deformation of the hook portion 84 reaches a maximum deformation in the process of closing the door body 30. B1After the door 30 continues to close until the hook portion 84 is fully closed, the elastic energy stored 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 enter further into the hook gap 404, thereby 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 the 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 has an inertial force F G , and the door body 30 maintains its tendency to move.

[0316] As described above, the gate 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 and the door body 30. B1When the door 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 locking force F 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 This combination 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. In the following, 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 amount, 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 The gate 30 continues to exist until it 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 automatically close.

[0320] Door body 30 is G B1 From G S When the door body 30 continues to close until 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 closed, 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 closed by the combination of the locking force F S , inertia force F GThe combination of the pressure of the groove wall of the guide groove 14 and the pressure 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, 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 walls of the guide groove 14 causes it to rapidly reverse to a predetermined position.

[0322] In the above embodiment, 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 gate body 30 G This can promote the reversal of the flip beam 9, and counteracts 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 avoiding 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 lock structure are configured to lock the door body 30 in the G B1 After the door is closed to the lock position, the locking force F S decays continuously.

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

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

[0326] In combination with Example 4, S is equal to G0. Based on the trajectory characteristics of the trajectory groove in the fourth embodiment, when the elastic deformation amount of the hook portion 84 reaches the maximum amount, the guide block 13 does not contact the guide groove 14. In the process in which the flip beam 9 is reversed 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 G B1 When fully closed, the first hinge shaft 41 is located at a first contact positioning point with respect to the first track groove 50 and the second hinge shaft 42 is located at a first contact guide point with respect 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 seen 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 track groove 50, and the second hinge shaft 42 is located at a third contact guide point with respect to the second track 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 trajectory segment of the first trajectory 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 sequentially arranged 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 trajectory 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 sequentially arranged 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 gate 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 has not reached the maximum amount.

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

[0333] Door body 30 is G F From G B1 In the process of continuing to close until the gate body 30 is closed, the gate body 30 is subjected to a 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 gate body 30 is reversed by the combination of the pressure of 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 closed, 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. S , it is reversed by a combination of the reversing 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 in the process of closing, and a reversing force F N It can be understood that the gate 30 provides a continuous damping of G B1 After closing, the locking force F S However, as the closing angle of the door body 30 becomes smaller, the force is continuously attenuated.

[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 accordance with the trajectory arrangement of the trajectory grooves in the first embodiment, the positions of the first hinge shaft 41 and the second hinge shaft 42 relative to the first trajectory groove 50 and the second trajectory 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 track groove 50, and the second hinge shaft 42 is located at a first contact guide point with respect to the second track 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 track groove 50, and the second hinge shaft 42 is located at a third contact guide point with respect to the second track groove 60.

[0340] The first contact positioning point and the third contact positioning point are all located on a straight line trajectory segment of the first trajectory line S, and the third contact position point, the first contact position 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 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 toward the door front wall 31.

[0341] In this embodiment, 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. W As a result, the flip beam 9 and the hook part begin to deform synchronously to store elastic energy, and then release the elastic energy sequentially. This effectively increases the synchronization of the movements of the torsion spring and the hook part, and reduces the closing force F applied by the user during the opening process of the door body 30. W The time to add the parameter can be reduced, thereby improving the user experience.

[0342] For example, as shown in FIG. B1 =G F That is, the gate 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 body 30 starts to close, and the gate body G B1 (G F ), that is, until the gate body 30 is closed at 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 flip beam 9 closed, and the 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 is reversed, and the torsion spring 14 is compressed and stores elastic energy.

[0345] Door body 30 is G B1 (G F ), the 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 is kept closed by a 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 , it is reversed to a predetermined position by a combination of the reversing force FN and the pressure of the groove wall of the guide groove 14.

[0347] In the above embodiment, G B1 =G F That is, the gate 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 reversing force F N and locking force F SBy making full use of 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 reversed to a predetermined position. Therefore, in the process of closing the door body 30, the reversing 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 reverse to a 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 in the process of closing, and then a reversing force F N The locking force F continues to decay. Also, when the closing angle of the door body 30 decreases, S continues to decrease.

[0349] In this embodiment, 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 which facilitates the reversal of the flip beam 9 is fully expanded.

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

[0351] The first contact positioning points are located on a straight line trajectory segment of the first trajectory line S, and the first contact positioning points and the first positioning point P1 are sequentially arranged in a direction away from the door side wall 32. The first contact guide points are located on the second trajectory line K, and the first contact guide points 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 embodiment, 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, storing elastic energy, and then the elastic energy is sequentially released, effectively improving the motion synchronization of the torsion spring and the hook part. In addition, the closing force F applied by the user during the process of opening the door body 30 is reduced. W By reducing the time it takes to add a new value, the user experience can be improved.

[0353] Example 11

[0354] Example 11 is the same as Example 1 to Example 10, except for the following points. In this example, as shown in Fig. 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 the angle bisector plane H (i.e., the 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 divides the first included angle σ evenly.

[0355] The angle bisector plane of the dihedral angle formed by the third reference plane M3 and the reference plane M0 (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. In 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, the first side edge W when the door body 30 is closed is located on the reference plane M0, that is, the first side edge W when the door body 30 is closed is the intersection line between the third reference plane M3 and the reference plane.

[0357] 58-60, 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 (for example, 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 central axis P) as the rotation axis to open, and when the door 30 rotates until WP is 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, it is expressed by the following formula 19. During this process, the door 30 rotates around the first hinge axis 41 by an angle θ.

[0360] (Formula 19) TIFF2025507784000101.tif8170

[0361] Here, E max is an incremental function of θ and is expressed by the following Equation 20.

[0362] (Formula 20) TIFF2025507784000102.tif27170

[0363] As can be seen from the above, the following equation 21 is an incremental function of θ.

[0364] (Formula 21) TIFF2025507784000103.tif8170

[0365] As shown in Fig. 58, the intersection point between the straight line trajectory segment of the first trajectory line S and the angle bisector plane H is entered as the second set position A2, the point located on the first trajectory line S on the side of the angle bisector plane H closer to the door side wall 32 is entered as the first set position A1, the point located on the straight line trajectory segment of the first trajectory line S on the side of the angle bisector plane H farther from the door side wall 32 is entered as the third set position A3, the included angle between WA1 and the straight line trajectory segment of the first trajectory trace is entered as θ1, the included angle between WA2 and the straight line trajectory segment on the first trajectory line is entered as θ2, and the included angle between WA3 and the straight line trajectory segment of the first trajectory line is entered 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 located 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 extends beyond the reference plane M0 during the rotation of the door body 30 is maximized.

[0368] When the door body 30 is closed, if the first positioning point P1 is located 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 exceeds the reference plane M0 during 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 disposed on the angle bisecting 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 locus groove 50 and the second locus groove 60 whose relative positional relationship remains constant, if the position of the first positioning point P1 in the first locus groove 50 relative to the angle bisector plane H differs when the door body 30 is closed, the distance between the door body 30 and the first reference plane M1 will differ 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 locus 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, where 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 setting position A1 when the door body 30 is closed, when the door body 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 way, it is ensured that the positioning central axis P approaches the angle bisector plane H, and the stability of the movement of the first hinge axis 41 relative to the door body 30 is ensured. On the other hand, by preventing the door body 30 from exceeding the reference plane M0 when the door body 30 is opened to 90°, interference between the door body 30 and the cabinet 100 can be avoided.

[0375] 60, when the first positioning point P1 is set to the third set position A3 when the door body 30 is closed, 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 body 30 is located inside the reference plane M0, which is advantageous for the door body 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 approaches the angle bisector plane H, and the stability of the movement of the first hinge axis 41 relative to the door body 30 is ensured. Meanwhile, it can be ensured that the door body 30 is located inside the reference plane M0 when it is opened to 90°, which is advantageous for the door body 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 or flush with the reference plane M0.

[0378] For example, when the door body 30 opens to approximately 45°, the first hinge shaft 41 moves to the end of the straight trajectory segment of the first trajectory line S 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 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 include other technical solutions formed by any combination of the above technical features or their equivalents without departing from the spirit of the present disclosure. The scope of the present disclosure is limited by the scope of 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 gap groove, 37 storage groove, 371 first storage chamber, 372 second storage chamber, 38 door end 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 track groove, S first track 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 trajectory groove, K second trajectory 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 1st gap, J2 2nd gap

Claims

1. A refrigerator comprising: a box body, a hinge assembly, a door body, a flip beam, and a guide block; The box body is a first body side wall and a second body side wall, the first body side wall and the second body side wall being provided opposite each other; A storage room; A guide groove provided at the top of the storage chamber; The hinge assembly is disposed on the box and proximate to a first body side wall, the hinge assembly comprising: a first trajectory groove having straight trajectory segments and curved trajectory segments connected to each other by a center trajectory line; A second track groove; a first hinge shaft that is engaged with the first locus groove and is movable relative to the first locus groove; a second hinge shaft that is engaged with the second locus groove and is movable relative to the second locus groove; A first fitting portion, The door body is connected to the box body via the hinge assembly to open and close the storage box, the first track groove and the second track groove are provided at an end of the door body close to the hinge assembly, and the door body is a door sidewall that is a sidewall of the door body that is closer to the hinge assembly, the curved path segment being located on a side of the straight path segment that is closer to the door sidewall; The first fitting portion and a second fitting portion that is locked or unlocked, The flip beam is provided on one of the two door bodies and is located at an end of the one door body close to the other door body, The guide block is located at the top end of the flip beam, and the guide block is fitted into the guide groove; When the door is closed to a first critical angle, the elastic deformation of the second fitting 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 body is closed to a second fitting 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 straight line locus segment; The first critical angle is equal to or larger than the second fitting angle, and the second contact positioning point is overlapped with the first contact positioning point, or the second contact positioning point is farther from the door side wall than the first contact positioning point. refrigerator.

2. The difference between the first critical angle and the second mating angle is any value within a range of 0° to 3°; 2. The refrigerator according to claim 1.

3. the center locus line of the second locus groove is a second locus line; When the door is closed to the first critical angle, a central axis of the second hinge shaft is located at a first contact guide point of the second locus line, When the door body is closed to the second fitting angle, a central axis of the second hinge shaft is located at a second contact guide point of the second locus line, When the door body is in a closed state, the central axis of the second hinge shaft is located at a first guide point of the second locus line, The first contact guide point, the second contact guide point, and the first guide point are sequentially arranged in a direction away from the door side wall.

3. The refrigerator according to claim 1 or 2.

4. The door body further includes a door front wall which is a side wall of the door body away from the box body, When the door body is in a closed state, the first hinge shaft is located at an end of the first locus groove that is away from the door side wall, and the second hinge shaft is located at an end of the second locus groove that is away from the door side wall. The refrigerator according to any one of claims 1 to 3.

5. When the door body is in the closed state, the second hinge shaft is farther from the door side wall and closer to the door front wall than the first hinge shaft.

5. The refrigerator according to claim 4.

6. In a process in which the door body opens from the closed state to a second angle, the first hinge shaft performs linear motion along the straight line trajectory segment relative to the first trajectory groove in a direction approaching the door side wall, and the second hinge shaft performs curved motion relative to the second trajectory groove in a direction approaching the door side wall and away from the door front wall, the second angle is equal to or greater than the first critical angle, and the first critical angle is greater than 0°; 5. The refrigerator according to claim 4.

7. the straight line trajectory segment is parallel to the door front wall; 7. The refrigerator according to claim 6.

8. In a process in which the door body opens from the second angle to the fourth angle, the first hinge shaft performs a curved motion with respect to the first locus groove along the curved locus segment in a direction approaching the door side wall and the door front wall, and the second hinge shaft performs a curved motion with respect to the second locus groove in a direction approaching the door side wall and moving away from the door front wall, The second angle is smaller than the fourth angle.

8. The refrigerator according to claim 6 or 7.

9. In a process in which the door body opens from the fourth angle to the fifth angle, the first hinge shaft performs a curved motion with respect to the first locus groove along the curved locus segment in a direction approaching the door side wall, and the second hinge shaft performs a curved motion with respect to the second locus groove in a direction approaching the door side wall and the door front wall, The fourth angle is smaller than the fifth angle.

9. The refrigerator according to claim 8.

10. The storage chamber is opened toward the door body to define an access opening, The door body further includes: A door rear wall which is a side wall of the door body close to the box body; A door seal provided on the rear wall of the door, the door seal abutting against the box body when the door body is in the closed state, and closing a gap between the door body and the box body. The refrigerator according to any one of claims 4 to 9.

11. the door seal includes a side seal edge, the side edge of the door seal being closer to the door side wall and farther from the door front wall; a first reference plane is defined as being located on a side of the first body sidewall away from the second body sidewall, parallel to the first body sidewall, and spaced a certain distance from the first body sidewall; A plane on which the loading / unloading opening is located is defined as a second reference plane, and the first reference plane is defined as being perpendicular to the second reference plane; When the door body is opened from the closed state to 90°, the side seal edge moves in a direction away from the first reference plane and the second reference plane, In the process of opening the door from 90° to a fifth angle, the side seal edge moves in a direction approaching the first reference plane and moving away from the second reference plane. The refrigerator according to claim 10.

12. In the process of the door body opening from the closed state to the fifth angle, the motion locus of the side seal edge is approximately a circular arc. The refrigerator according to claim 11.

13. When the door body is closed to a first fitting angle, the second fitting portion comes into contact with the first fitting portion, In the process of closing the door from the first fitting angle to the first critical angle, the second fitting portion is elastically deformed under the action of the first fitting portion, the first mating angle is greater than the first critical angle; The refrigerator according to any one of claims 1 to 12.

14. The refrigerator further includes a door hinge, and the flip beam is rotatably connected to the door body via the door hinge, The flip beam further comprises: Flip beam back cover a torsion spring that connects the door body and the flip beam back cover to elastically connect the flip beam and the door body, respectively, the torsion spring being configured to store or release a torsion force by the guide block and the guide groove; The refrigerator according to claim 13.

15. the first critical angle is greater than the second mating angle; In the process of closing the door from the first critical angle to the second fitting angle, the second fitting portion releases an elastic force accumulated due to elastic deformation to rotate the door, When the door body is closed to the second fitting angle, the guide block contacts the guide groove, In the process of closing the door from the second fitting angle to the second critical angle, the door is rotated by the elastic force of the second fitting portion, causing the guide block to slide in the guide groove, and the torsion spring is compressed by the guide block and the guide groove to accumulate a torsion force. Refrigerator according to claim 14.

16. the first critical angle is equal to the second interfitting angle; When the door body is closed to the first critical angle, the guide block contacts the guide groove at the same time that the elastic deformation amount of the second fitting portion reaches the predetermined threshold value, In the process of closing the door from the first critical angle to the second critical angle, the second fitting portion releases the elastic force accumulated by elastic deformation, the door is rotated by the elastic force of the second fitting portion, the guide block slides in the guide groove, and the torsion spring is compressed by the guide block and the guide groove to accumulate a torsion force. Refrigerator according to claim 14.

17. When the door is closed to the second critical angle, the torsion force accumulated in the torsion spring reaches a predetermined value, In the process of closing the door from the second critical angle to 0°, the torsion spring releases the accumulated torsion force, the flip beam is inverted by the torsion force of the torsion spring, and the door rotates until it is closed by the elastic force of the second fitting portion. Refrigerator according to claim 15 or 16.

18. The hinge assembly further includes a hinge plate, the hinge plate comprising: A connection portion connected to the box body; an extension portion connected to the connection portion and extending horizontally in a predetermined direction; The first hinge shaft and the second hinge shaft are provided on the extension portion and extend downward from a lower surface of the extension portion or extend upward from an upper surface of the extension portion. The refrigerator according to any one of claims 13 to 17.

19. The door body further includes a mounting block, the mounting block corresponds to the hinge plate and is provided on an upper wall or a lower wall of the door body, the mounting block includes a plate body, and the first locus groove and the second locus groove are provided on the plate body.

20. The refrigerator according to claim 18.

20. The door body further includes a door front wall, the door front wall being a side wall of the door body that is away from the box body, the first fitting portion includes a stopper portion provided on a side of the hinge plate away from the first main body side wall, the second fitting portion includes a lock hook connected to the plate body and located on a side of the plate body that is away from the door side wall, the lock hook extends in a direction away from the door side wall, and an opening toward the door side wall is formed by bending the lock hook in a direction away from the door front wall and toward the door side wall, When the door body is closed to the first fitting angle, the lock hook comes into contact with the stopper portion, In the process of closing the door from the first fitting angle to the first critical angle, the lock hook undergoes elastic deformation under the action of the stopper portion, When the door body is closed to the first critical angle, the elastic deformation amount of the lock hook reaches the predetermined threshold value, In the process of closing the door from the first critical angle to 0°, the lock hook releases the elastic force accumulated due to elastic deformation, and rotates the door to close it.

20. The refrigerator according to claim 19.

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