Refrigerator

Abstract

The utility model provides a refrigerator. The refrigerator comprises a refrigerator body, a hinge assembly and a door body. The hinge assembly comprises a first track groove, a second track groove, a first shaft and a second shaft. The first shaft is matched with the first track groove and can move relative to the first track groove. The second shaft is matched with the second track groove and can move relative to the second track groove. The door body is connected with the refrigerator body through the hinge assembly so as to open or close the refrigerator body. The door body comprises a door side wall and a door front wall. In the process that the door body is opened to a preset angle from a closed state, the second shaft moves along the second track groove, the first shaft moves in the direction close to the door side wall all the time along the first track groove, and the door body moves towards the inner side all the time while rotating. And the distance of the door body exceeding the reference plane in the opening process is smaller than a preset value.

Description

[0001] This application claims priority to Chinese patent application No. 202210389007.1, filed on April 14, 2022; Chinese patent application No. 202210388980.1, filed on April 14, 2022; Chinese patent application No. 202210388529.X, filed on April 14, 2022; Chinese patent application No. 202210389010.3, filed on April 14, 2022; and Chinese patent application No. 202210388981.6, filed on April 14, 2022, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of household appliances, and more particularly to a refrigerator. Background Technology

[0003] In family life, refrigerators have become an essential appliance for every household. Driven by the desire for a sleek and aesthetically pleasing interior, more and more consumers are choosing built-in refrigerators.

[0004] Built-in refrigerators are refrigerators that are embedded in matching cabinets. They form a heat dissipation circulation through the base, back panel, and top panel. Therefore, there can be a small gap between the left and right side walls of the refrigerator and the inner side walls of the cabinet. Utility Model Content

[0005] A refrigerator is provided, comprising a cabinet, a hinge assembly, and a door. The hinge assembly includes a first track groove, a second track groove, a first shaft, and a second shaft. The first shaft engages with the first track groove and is movable relative to the first track groove. The second shaft engages with the second track groove and is movable relative to the second track groove. The door is connected to the cabinet via the hinge assembly to open or close the cabinet. The door includes a side wall and a front wall. The side wall is the side wall of the door closest to the hinge assembly. The front wall is the side wall of the door furthest from the cabinet. A reference plane is defined as the plane containing the side of the cabinet closest to the hinge assembly, and the side of the reference plane closest to the cabinet is defined as the inner side. During the process of the door opening from a closed state to a preset angle, the second shaft moves along the second track groove, the first shaft always moves along the first track groove towards the side wall, and the door always moves towards the inner side while rotating, so that the distance the door extends beyond the reference plane during the opening process is less than a preset value. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly introduced below. However, the drawings described below are merely drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. Furthermore, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc., involved in the embodiments of this disclosure.

[0007] Figure 1A A perspective view of a refrigerator according to some embodiments;

[0008] Figure 1B A perspective view of another refrigerator according to some embodiments;

[0009] Figure 2A This is a top view of a refrigerator according to some embodiments;

[0010] Figure 2B A top view of another refrigerator according to some embodiments;

[0011] Figure 3 This is a structural diagram of the hinge shaft and track groove of a refrigerator according to some embodiments;

[0012] Figure 4 An exploded view of a first hinge assembly of a refrigerator according to some embodiments;

[0013] Figure 5 A structural diagram of a hinge shaft and track groove when the door of a refrigerator is in the closed state, according to some embodiments;

[0014] Figure 6 This is a structural diagram of the hinge shaft and track groove when the door of a refrigerator is opened to a first angle G1 according to some embodiments;

[0015] Figure 7 This is a structural diagram of the hinge shaft and track groove when the refrigerator door is opened to the second angle G2 according to some embodiments;

[0016] Figure 8 This is a structural diagram of the hinge shaft and track groove when the refrigerator door is opened to the third angle G3 according to some embodiments;

[0017] Figure 9 This is a structural diagram of the hinge shaft and track groove when the refrigerator door is opened to the fourth angle G4 according to some embodiments;

[0018] Figure 10 For the refrigerator door to be opened to a fifth angle G according to some embodiments max At that time, the structural diagram of the hinge shaft and the track groove;

[0019] Figure 11 This is a diagram showing the motion trajectory of the first side edge W and the second side edge N of a refrigerator according to some embodiments;

[0020] Figure 12 This is a motion trajectory diagram of the central segment PQ of a refrigerator according to some embodiments;

[0021] Figure 13 This is a schematic diagram showing the positions of the first axis relative to the first track groove and the second axis relative to the second track groove when the refrigerator door is opened to the first angle G1 according to some embodiments.

[0022] Figure 14 This is a schematic diagram showing the positions of the first axis relative to the first track groove and the second axis relative to the second track groove when the refrigerator door is opened to the second angle G2 according to some embodiments.

[0023] Figure 15 This is a schematic diagram showing the positions of the first axis relative to the first track groove and the second axis relative to the second track groove when the refrigerator door is opened to the third angle G3 according to some embodiments.

[0024] Figure 16 This is a schematic diagram showing the positions of the first axis relative to the first track groove and the second axis relative to the second track groove when the refrigerator door is opened to the fourth angle G4 according to some embodiments.

[0025] Figure 17 For the refrigerator door to be opened to the fifth angle G according to some embodiments max At that time, a schematic diagram showing the positions of the first axis relative to the first track groove and the second axis relative to the second track groove;

[0026] Figure 18 A schematic diagram illustrating the motion of the roller along a convex curve;

[0027] Figure 19 This is a schematic diagram showing the movement directions of the first and second axes of a refrigerator according to some embodiments;

[0028] Figure 20 This is a schematic diagram showing the movement directions of the first and second axes when the door of a refrigerator is in the closed state, according to some embodiments.

[0029] Figure 21 This is a schematic diagram showing the movement directions of the first axis and the second axis when the door of a refrigerator is opened to the first angle G1 according to some embodiments.

[0030] Figure 22 This is a schematic diagram showing the movement directions of the first and second axes when the door of a refrigerator is opened to the second angle G2 according to some embodiments.

[0031] Figure 23This is a schematic diagram showing the movement directions of the first and second axes when the refrigerator door is opened to the third angle G3 according to some embodiments.

[0032] Figure 24 This is a schematic diagram showing the movement directions of the first and second axes when the refrigerator door is opened to the fourth angle G4 according to some embodiments.

[0033] Figure 25 This is a structural diagram of another hinge shaft and track groove when the door of a refrigerator is in the closed state, according to some embodiments;

[0034] Figure 26 This is a structural diagram of a hinge shaft and track groove when the door of a refrigerator is in the closed state, according to some embodiments.

[0035] Figure 27 This is a structural diagram of a hinge shaft and track groove when the door of a refrigerator is in the closed state, according to some embodiments.

[0036] Figure 28 This is a structural diagram of a hinge shaft and track groove when the door of a refrigerator is in the closed state, according to some embodiments.

[0037] Figure 29 This is a structural diagram showing the first axis relative to the first track groove and the second axis relative to the second track groove when the refrigerator door body presses against the door seal according to some embodiments;

[0038] Figure 30 This is a diagram showing the motion trajectory of the first axis relative to the first track groove and the second axis relative to the second track groove when the refrigerator door is pressed against the door seal according to some embodiments.

[0039] Figure 31 This is a structural diagram of a refrigerator with its door closed, according to some embodiments.

[0040] Figure 32 This is a structural diagram of a refrigerator door opened to a second rotation angle s according to some embodiments;

[0041] Figure 33 This is a structural diagram of a refrigerator door opened to a third rotation angle t according to some embodiments;

[0042] Figure 34 This is a structural diagram of a refrigerator door opened to the fifth angle according to some embodiments. Detailed Implementation

[0043] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0044] In the following text, for ease of description, unless otherwise specified, the descriptions of up, down, left, right, front, and back directions in this disclosure are based on the refrigerator's position when in use. The side of the refrigerator facing the user when in use is the front side, and the opposite side is the back side. The height direction of the refrigerator is the up and down direction. The left and right directions of the refrigerator are opposite to the user's left and right directions; for example, the left side of the refrigerator is the user's right side, and the right side of the refrigerator is the user's left side.

[0045] Some embodiments of this disclosure provide a refrigerator 1, with reference to... Figure 1A and Figure 2A The refrigerator 1 includes a cabinet 10, a hinge assembly 20, a door 30, and a refrigeration unit.

[0046] The refrigerator body 10 includes an inner liner, an outer shell connected to the outside of the inner liner to form the appearance of the refrigerator 1, and a heat insulation layer disposed between the inner liner and the outer shell. A storage compartment is defined within the inner liner, and the refrigeration unit is configured to supply cold air to the storage compartment. One side (e.g., the front side) of the storage compartment is open to form a retrieval opening. The storage compartment is configured to store food, and a user can place food into or remove food from the storage compartment through the retrieval opening.

[0047] In some embodiments, as Figure 1B and Figure 2B As shown, the cabinet 10 defines multiple storage compartments, and the refrigerator 1 includes multiple doors 30.

[0048] For example, multiple storage compartments include a refrigerator compartment and a freezer compartment located below the refrigerator compartment. Multiple doors 30 include two refrigerator compartment doors and two freezer compartment doors. When the refrigerator compartment needs to be closed, the two refrigerator compartment doors rotate towards each other; when the refrigerator compartment needs to be opened, the two refrigerator compartment doors rotate away from each other. Similarly, when the freezer compartment needs to be closed, the two freezer compartment doors rotate towards each other; when the freezer compartment needs to be opened, the two freezer compartment doors rotate away from each other.

[0049] It should be noted that the arrangement of multiple storage rooms and multiple doors 30 is not limited to the examples described above.

[0050] The door 30 is connected to one end (such as the front end) of the housing 10 via a hinge assembly 20. The door 30 can rotate relative to the housing 10 to open or close the loading and unloading port.

[0051] For example, hinge assembly 20 is either a first hinge assembly 40 or a second hinge assembly 70. The first hinge assembly 40 is disposed on the upper part of the housing 10 and is fixedly connected to both the housing 10 and the door 30; the second hinge assembly 70 is disposed on the lower part of the housing 10 and is fixedly connected to both the housing 10 and the door 30. The first hinge assembly 40 and the second hinge assembly 70 are arranged along the same axis, allowing the door 30 to rotate around this axis, thus opening and closing the door 30. The housing 10 includes a first sidewall 11 and a second sidewall 12 disposed opposite to each other, and the first sidewall 11 is the sidewall of the housing 10 closest to the hinge assembly 20. In some embodiments, the plane containing the first sidewall 11 is defined as a reference plane M0. Using the reference plane M0 as the interface, the side containing the housing 10 is defined as the inner side, and the opposite side is defined as the outer side. Figure 1A and Figure 2A In the case where the hinge assembly 20 is located at the left end of the housing 10, the left side wall of the housing 10 is defined as the reference plane M0, and the inner side is the right side of the reference plane M0.

[0052] The door body 30 includes a left side wall, a right side wall, an upper side wall, a lower side wall, and a front side wall. For ease of description, the side wall of the left and right sides of the door body 30 that is closer to the hinge assembly 20 is referred to as the door side wall 32.

[0053] For example, in Figure 1A and Figure 2A In the middle, the hinge assembly 20 is set at the left end of the door body 30 (i.e., the right end of the user), then the left side wall of the door body 30 is called the door side wall 32, and the right end of the door body 30 rotates with its left end as the rotation center.

[0054] Similarly, when the hinge assembly 20 is located at the right end of the door body 30, the right side wall of the door body 30 is called the door side wall 32, and the left end of the door body 30 rotates with its right end as the center of rotation.

[0055] In some embodiments, see Figure 1A , Figure 2A and Figure 4 The side wall of the door 30 furthest from the housing 10 when closed (e.g., the front side wall) is called the front wall 31, and the side wall of the door 30 closest to the housing 10 when closed (e.g., the rear side wall) is called the rear wall 33. The front wall 31 and the side wall 32 intersect to form a first side edge W, and the side wall 32 and the rear wall 33 intersect to form a second side edge N. When the door 30 is closed, the first side edge W is located on the side of the second side edge N furthest from the housing 10.

[0056] It should be noted that when both the front wall 31 and the side wall 32 are planar, the intersection line of the two planes is theoretically the first side edge W. However, in actual manufacturing, the intersection of the front wall 31 and the side wall 32 is usually rounded. This creates a curved surface at the intersection of the front wall 31 and the side wall 32, and any straight line extending along the height direction (i.e., the vertical direction) of the door body 30 on this curved surface can represent the first side edge W. Similarly, the rounded corner at the intersection of the front wall 31 and the side wall 32 can also be represented by the intersection line of the plane containing the front wall 31 and the plane containing the side wall 32, or a straight line that is close to and parallel to this intersection line.

[0057] In some embodiments, refer to Figure 2A and Figure 2B When the refrigerator 1 is embedded in the cabinet 100, considering factors such as uneven ground or deformation of the cabinet 100, a reserved gap 101 is required between the first body side wall 11 of the refrigerator 1 (corresponding to the location of the reference plane M0) and the inner side wall of the cabinet 100. The width α of the reserved gap 101 is usually any value between 3mm and 5mm. For example, the width of the reserved gap 101 can be 3mm, 4mm or 5mm.

[0058] Understandably, to ensure that the door 30 can open normally, the distance by which the first side edge W extends beyond the reference plane M0 during the rotation of the door 30 should not be too large, for example, no more than 5mm. Otherwise, the first side edge W will collide with the cabinet 100, causing the door 30 to fail to open fully, which could lead to damage to the door 30 or the cabinet 100.

[0059] Therefore, the hinge assembly 20 adopts a dual-axis hinge form, so that the door 30 moves inward during rotation, thereby ensuring that the distance of the first side edge W beyond the reference plane M0 is not too large.

[0060] The structure of the dual-axis hinge will be described below, taking the first hinge assembly 40 as an example.

[0061] In some embodiments, see Figure 3 and Figure 4 The first hinge assembly 40 includes a first hinge plate 410, a first shaft 41 (i.e., the main hinge shaft 41), a second shaft 42 (i.e., the auxiliary hinge shaft 42), a first track groove 50, and a second track groove 60.

[0062] The first hinge plate 410 includes a first connecting portion 411 and a first extension portion 412. The first connecting portion 411 is fixedly connected to the upper side wall of the housing 10. The first connecting portion 411 has a plurality of first through holes 4111, and the housing 10 has a plurality of second through holes. The plurality of second through holes are located in the upper side wall of the housing 10 and correspond to the plurality of first through holes 4111. The first connecting portion 411 can be fixedly connected to the housing 10 by fasteners such as screws, pins or bolts. The first extension portion 412 connects to the first connecting portion 411 and extends horizontally forward to the top of the door 30.

[0063] The first track groove 50 and the second track groove 60 are disposed in the upper side wall of the door body 30 and correspond to the position of the first connecting part 411. For example, the upper side wall of the door body 30 is recessed away from the first hinge plate 410 to form the first track groove 50 and the second track groove 60.

[0064] The first shaft 41 and the second shaft 42 are both disposed on the first extension 412 and extend downward from the lower surface of the first extension 412. The second shaft 42 is further away from the side wall 11 of the first body than the first shaft 41. The first shaft 41 is inserted into the first track groove 50 and cooperates with the first track groove 50; the second shaft 42 is inserted into the second track groove 60 and cooperates with the second track groove 60.

[0065] It is understandable that when the door 30 rotates, the first shaft 41 moves relative to the first track groove 50, and the second shaft 42 moves relative to the second track groove 60.

[0066] In this way, the housing 10 and the door 30 are connected by the first hinge assembly 40, and the door 30 can rotate relative to the housing 10 through the first hinge assembly 40.

[0067] In some embodiments, the first hinge plate 410, the first shaft 41, and the second shaft 42 are integral parts, or the first hinge plate 410, the first shaft 41, and the second shaft 42 are independent parts, and the first shaft 41 and the second shaft 42 are respectively connected to the first hinge plate 410.

[0068] It should be noted that the second hinge assembly 70 has a structure largely the same as the first hinge assembly 40, and the similarities will not be repeated. The difference lies in that the second hinge assembly 70 includes a second hinge plate, which includes a second connecting portion and a second extension portion. The second connecting portion is fixedly connected to the front end face of the housing 10 and is located at the lower end of the housing 10. The second extension portion extends horizontally from the side of the second connecting portion away from the housing 10 to the lower part of the door 30 in a direction away from the housing 10. The first shaft 41 and the second shaft 42 extend upward from the upper surface of the second extension portion.

[0069] Corresponding to the positions of the first hinge plate 410 and the second hinge plate, the upper and lower ends of the door body 30 are provided with a first track groove 50 and a second track groove 60. The two first track grooves 50 at the upper and lower ends of the door body 30 are positioned correspondingly in the height direction of the door body 30, and the two second track grooves 60 are also positioned correspondingly in the height direction of the door body 30, so that the movement of the upper and lower ends of the door body 30 is consistent, thereby improving the smoothness of opening or closing the door body 30.

[0070] It is understood that the above is merely an example of the first shaft 41 and the second shaft 42 being fixed relative to the housing 10, and the first track groove 50 and the second track groove 60 being fixed relative to the door 30. Some embodiments of this disclosure are not limited to this. For example, the first shaft 41 and the second shaft 42 may be fixed relative to the door 30, and the first track groove 50 and the second track groove 60 may be fixed relative to the housing 10; or, the first shaft 41 and the first track groove 50 may cooperate, with one fixed relative to the door 30 and the other fixed relative to the housing 10, and the second shaft 42 and the second track groove 60 may be configured similarly.

[0071] The following description primarily uses the first hinge assembly 40 located on the upper part of the housing 10 as an example to illustrate the trajectory of the first track groove 50 and the second track groove 60, as well as the process of the door 30 opening or closing relative to the housing 10. It is understood that the second hinge assembly 70 operates on the same principle as the first hinge assembly 40, and will not be elaborated upon further in this disclosure.

[0072] In some embodiments, as Figure 3 As shown, the first trajectory groove 50 includes a connected straight groove segment and a curved groove segment, and the center trajectory line of the first trajectory groove 50 is denoted as the first trajectory line S. The center trajectory line of the straight groove segment is a straight trajectory segment, and the center trajectory line of the curved groove segment is a curved groove segment. One end of the straight trajectory segment is further away from the door sidewall 32 than the other end of the straight trajectory segment. One end of the curved trajectory segment is connected to the other end of the straight trajectory segment, and the other end of the curved trajectory segment extends in a direction closer to the front wall 31 and the door sidewall 32 (i.e., in a direction closer to the first side edge W). The first sidewall N is located on the convex side of the curved trajectory segment.

[0073] The second track groove 60 is a curved groove, and the center track line of the second track groove 60 is denoted as the second track line K. One end of the second track line K is closer to the front wall 31 and farther from the side wall 32 of the door than the other end of the second track line K. The second track line K protrudes towards the rear wall of the door.

[0074] The first track groove 50 is located on the side of the second track groove 60 that is close to the front wall 31 and the side wall 32 of the door, so that the door 30 moves inward while rotating, so as to avoid the door 30 colliding with the cabinet 100 when it is opened.

[0075] After the first hinge plate 410 is fixedly connected to the housing 10, and the first shaft 41 and the second shaft 42 are fixedly connected to the first hinge plate 410, the housing 10 remains stationary during the rotation of the door 30 relative to the housing 10. Therefore, the first hinge plate 410, the first shaft 41, and the second shaft 42 also remain stationary. At this time, the first track groove 50 will move relative to the first shaft 41, and the second track groove 60 will move relative to the second shaft 42.

[0076] It is understood that there is a relative motion relationship between the first track groove 50 and the first axis 41, and between the second track groove 60 and the second axis 42. For ease of description, some embodiments of this disclosure are sometimes described with the first track groove 50 and the second track groove 60 as stationary references, and the first axis 41 moving within the first track groove 50 and the second axis 42 moving within the second track groove 60. However, this should not be construed as a limitation of this disclosure.

[0077] In some embodiments, as Figures 5 to 10 As shown, the central axis of the first axis 41 is denoted as the positioning central axis P, the central axis of the second axis 42 is the guiding central axis Q, and the line segment PQ is denoted as the axis center line segment PQ.

[0078] During the opening of the door 30, the movement of the first axis 41 along the first track groove 50 is equivalent to the movement of the positioning center axis P along the first track line S, and the movement of the second axis 42 along the second track groove 60 is equivalent to the movement of the guide center axis Q along the second track line K, so that the door 30 moves a certain distance inward while rotating, so as to avoid the door 30 colliding with the cabinet 100.

[0079] It is understandable that, since the first axis 41 and the second axis 42 are mounted on the first hinge plate 410, the movement of the axis segment PQ relative to the track groove (including the first track groove 50 and the second track groove 60) is equivalent to the movement of the first hinge plate 410 relative to the door body 30, and also equivalent to the movement of the box body 10 relative to the door body 30. Based on the relativity of movement, the movement of the door body 30 relative to the box body 10 can be derived from the movement of the box body 10 relative to the door body 30.

[0080] In the following description, for ease of explanation, the motion of the axis line segment PQ relative to the door body 30 is selected to represent the motion of the box body 10 (or the first hinge plate 410) relative to the door body 30.

[0081] In some embodiments, as Figure 5As shown, the first trajectory line S includes a starting positioning point P0 and a fifth positioning point P5. The fifth positioning point P5 is closer to the door side wall 32 than the starting positioning point P0. The first trajectory line S extends from the starting positioning point P0 along a straight line towards the door side wall 32, and then along a curve towards the door side wall 32 and the front wall 31 of the door to the fifth positioning point P5.

[0082] The second trajectory line K includes a guide starting point Q0 and a fifth guide point Q5. The fifth guide point Q5 is farther away from the front wall 31 and closer to the side wall 32 than the guide starting point Q0. The second trajectory line K extends from the guide starting point Q0 in a direction that is farther away from the front wall 31 and closer to the side wall 32, and then extends in a direction that is closer to the front wall 31 and closer to the side wall 32 to the fifth guide point Q5.

[0083] The distance between the initial positioning point P0 and the front wall 31 is denoted as D1, and the distance between the fifth positioning point P5 and the front wall 31 is denoted as D2. The distance between the guide starting point Q0 and the front wall 31 is denoted as Z1, and the distance between the fifth guide point Q5 and the front wall 31 is denoted as Z2. For example, distance Z1 < distance D2 < distance D1 < distance Z2. With the above settings, the second axis 42 moves under the constraint of the second track groove 60 to cooperate with the movement of the first axis 41 within the first track groove 50, thereby causing the door 30 to move a certain distance inward during the opening process, which is beneficial to improving the stability of the door 30 during the opening process.

[0084] like Figure 5 As shown, when the door 30 is in the closed state, the central axis (positioning center axis P) of the first axis 41 is located at the starting positioning point P0 of the first trajectory line S, and the central axis (guide center axis Q) of the second axis 42 is located at the guiding starting point Q0 of the second trajectory line K.

[0085] Combination Figure 5 In this case, the vertical distance between the first axis 41 and the second axis 42 in the direction parallel to the door sidewall 32 is denoted as L1 = D1 - Z1, and L1 is any value between 2.5mm and 10mm. For example, L1 is 2.5mm, 5mm, or 10mm. The horizontal distance between the first axis 41 and the second axis 42 in the direction perpendicular to the door sidewall 32 is denoted as L2, and L2 is any value between 7.5mm and 30mm. For example, L2 is 7.5mm, 15mm, or 30mm.

[0086] For example, L1 can be set to 5mm, L2 to 15mm, and the thickness of the door body 30 can be between 44mm and 53mm, so that when the door body 30 is opened, the distance by which the first side edge W extends beyond the reference plane M0 is small, for example, less than 3mm.

[0087] The following will be based on the fifth angle G when refrigerator 1 is opened. maxTaking an opening angle greater than 90° as an example, the door 30 is opened from the closed state to the fifth angle G. max During the process, when the door 30 rotates and opens to a preset angle (such as the first angle G1, the second angle G2, etc.), the position of the first axis 41 relative to the first track groove 50 and the relative position of the second axis 42 relative to the second track groove 60 are described.

[0088] In some embodiments, the maximum angle that the door 30 can open is a preset angle. The preset angle can be a fifth angle, where the door 30 opens from the closed state to a fifth angle G. max During the process, the screen will be rotated and opened sequentially to the first angle G1, the second angle G2 (i.e., the first opening angle), the third angle G3, and the fourth angle G4 (i.e., the second opening angle), with 0° < first angle G1 < second angle G2 < third angle G3 < fourth angle G4 < fifth angle G4. max .

[0089] like Figure 5 As shown, when the door 30 is in the closed state, the positioning center axis P is located at the starting positioning point P0 of the first trajectory line S, and the guide center axis Q is located at the guide starting point Q0 of the second trajectory line K.

[0090] like Figure 6 As shown, during the process of the door 30 opening from any angle greater than 0° to any angle less than the second angle G2, the first axis 41 moves along the straight trajectory segment of the first trajectory line S towards the direction closer to the door side wall 32, and the second axis 42 moves along the second trajectory line K towards the direction closer to the door side wall 32 and away from the front wall 31.

[0091] It should be noted that during the process of the door 30 opening from any angle greater than 0° to any angle less than the second angle G2, the movement trend of the door 30 and the hinge axis remains unchanged. Therefore, any angle greater than 0° and less than the second angle G2 can represent the position of the first axis 41 relative to the first track groove 50 and the position of the second axis 42 relative to the second track groove 60 when the door 30 is opened to the (0°, G2) interval.

[0092] For example, Figure 6 , Figure 12 and Figure 13 As shown, the movement of the door 30, the first axis 41, and the second axis 42 when the door 30 is opened to the interval (0°, G2) is represented by the opening angle G1, and is compared with the door 30 when it is opened to other angles.

[0093] like Figure 6 and Figure 13As shown, when the door 30 is opened to the first angle G1, the positioning center axis P is located at the first positioning point P1 on the first trajectory line S. The first positioning point P1 is closer to the door side wall 32 than the starting positioning point P0. The guide center axis Q is located at the first guide point Q1 on the second trajectory line K. The first guide point Q1 is closer to the door side wall 32 and farther away from the door front wall 31 than the starting guide point Q0.

[0094] like Figure 7 and Figure 14 As shown, when the door 30 rotates open to the second angle G2, the positioning center axis P is located at the second positioning point P2 on the straight track segment of the first trajectory line S. The second positioning point P2 is closer to the door side wall 32 than the first positioning point P1. The second positioning point P2 is the endpoint of the straight track segment closest to the door side wall 32 (i.e., the other end of the straight track segment). The guide center axis Q is located at the second guide point Q2 on the second trajectory line K. The second guide point Q2 is closer to the door side wall 32 and farther from the front wall of the door than the first guide point Q1. For example, G2 is any value between 26° and 30°. For example, G2 is 26°, 28°, or 30°.

[0095] In the process of the door 30 opening from the closed state to the second angle G2, the first axis 41 always moves along a straight line towards the door side wall 32, and the second axis 42 moves along a curve towards the door side wall 32 and away from the door front wall 31.

[0096] like Figure 8 As shown, during the process of the door 30 rotating and opening from any angle greater than the second angle G2 to any angle less than the fourth angle G4, the first axis 41 moves along the curved trajectory segment of the first trajectory line S towards the direction closer to the door side wall 32 and the front wall 31, and the second axis 42 moves along the second trajectory line K towards the direction closer to the door side wall 32 and away from the front wall 31.

[0097] It should be noted that during the process of the door 30 rotating and opening from any angle greater than the second angle G2 to any angle less than the fourth angle G4, the movement trend of the door 30 and the hinge axis remains unchanged. Thus, any angle greater than G2 and less than G4 can represent the position of the first axis 41 relative to the first track groove 50 and the position of the second axis 42 relative to the second track groove 60 when the door 30 is opened to the (G2, G4) interval.

[0098] For example, such as Figure 15 As shown, the movement of the door 30, the first axis 41, and the second axis 42 when the door 30 is opened to the interval (G2, G4) is represented by the opening angle G3, in order to compare with the door 30 when it is opened to other angles.

[0099] See Figure 8 and Figure 15 When the door 30 is opened to the third angle G3, the positioning center axis P is located at the third positioning point P3 on the first trajectory line S. The third positioning point P3 is closer to the door side wall 32 and closer to the door front wall 31 than the second positioning point P2. The guide center axis Q is located at the third guide point Q3 on the second trajectory line K. The third guide point Q3 is closer to the door side wall 32 and farther from the door front wall 31 than the second guide point Q2.

[0100] like Figure 9 and Figure 16 As shown, when the door 30 is rotated open to the fourth angle G4 (e.g., 90°), the positioning center axis P is located at the fourth positioning point P4 on the straight track segment of the first trajectory line S. The fourth positioning point P4 is closer to the door side wall 32 and closer to the door front wall 31 than the third positioning point P3. The guide center axis Q is located at the fourth guide point Q4 on the second trajectory line K. The fourth guide point Q4 is closer to the door side wall 32 and farther from the door front wall 31 than the third guide point Q3.

[0101] like Figure 10 As shown, the door 30 is rotated open from any angle less than the fourth angle G4 to the fifth angle G. max During the process, the first axis 41 moves along the curved trajectory segment of the first trajectory line S towards the direction closer to the door side wall 32 and the front wall 31, while the second axis 42 moves along the second trajectory line K towards the direction closer to the door side wall 32 and the front wall 31. For example, the fifth angle G max Any value between 110° and 120°, for example, the fifth angle G. max The angles are 110°, 116°, or 120°.

[0102] It is understandable that, from the fifth angle G... max With a maximum opening angle of 110°, the door 30 has a relatively small maximum opening angle, thus preventing the door 30 from colliding with the cabinet 100. At the fifth angle G... max With a 120° angle, the door 30 can be opened to a larger angle to facilitate users in taking out and putting in food.

[0103] It should be noted that the door 30 can be rotated open from any angle less than the fourth angle G4 to the fifth angle G. max During the process, the movement trend of the door body 30 and the hinge axis remains unchanged. Therefore, choose any value greater than G4 and less than or equal to G. max The angle can represent the door opening from 30° to (G4, G) max When the interval is defined, the position of the first axis 41 relative to the first track groove 50 and the position of the second axis 42 relative to the second track groove 60 are defined.

[0104] For example, such as Figure 17 As shown, the opening angle of door 30 is G.max The door 30 is open to (G4, G) max The movement of the door 30, the first axis 41, and the second axis 42 during the interval is compared with the movement of the door 30 when it is opened to other angles.

[0105] When the door opens to the fifth angle G at 30 degrees max At this time, the positioning center axis P is located at the fifth positioning point P5 on the first trajectory line S. The fifth positioning point P5 is closer to the door side wall 32 and closer to the door front wall 31 than the fourth positioning point P4. The guide center axis Q is located at the fifth guide point Q5 on the second trajectory line K. The fifth guide point Q5 is closer to the door side wall 32 and closer to the door front wall 31 than the fourth guide point Q4.

[0106] In some embodiments, the starting positioning point P0, the first positioning point P1, the second positioning point P2, the third positioning point P3, the fourth positioning point P4, and the fifth positioning point P5 are distributed sequentially along the first trajectory line S.

[0107] For example, the first positioning point P1, the second positioning point P2, and the third positioning point P3 are distributed along the straight trajectory segment towards the door side wall 32, and the third positioning point P3, the fourth positioning point P4, and the fifth positioning point P5 are distributed along the curved trajectory segment towards the door side wall 32 and the front wall 31.

[0108] The starting guide point Q0, the first guide point Q1, the second guide point Q2, the third guide point Q3, the fourth guide point Q4, and the fifth guide point Q5 are distributed sequentially along the first trajectory line S.

[0109] For example, the first guide point Q1, the second guide point Q2, the third guide point Q3, and the fourth guide point Q4 are distributed along the second trajectory line K in a direction closer to the door side wall 32 and farther away from the door front wall 31, and the fourth guide point Q4 and the fifth guide point Q5 are distributed along the second trajectory line K in a direction closer to the door side wall 32 and closer to the door front wall 31.

[0110] In some embodiments, when the door 30 is opened from the closed state to a fifth angle G... max During the process, the first axis 41 moves relative to the first track groove 50 and moves unidirectionally toward the door side wall 32, while the second axis 42 moves relative to the second track groove 60 and moves unidirectionally toward the door side wall 32.

[0111] In some embodiments, the door 30 can also be positioned from the fifth angle G. max Open to the sixth angle. From the fifth angle G at door 30. max During the process of opening to the sixth angle, the second axis 42 moves towards the door side wall 32 relative to the second track groove 60, and the first axis 41 moves away from the door side wall 32 relative to the first track groove 50.

[0112] For example, the second trajectory line K also includes a sixth guide point Q5, which is closer to the door sidewall 32 than the fifth positioning point Q5. At the fifth angle G of the door body 30... max During the opening to the sixth angle, the guide center axis Q moves to the sixth guide point Q6, and the positioning center axis P moves away from the door sidewall 32 along the first trajectory line S (i.e., retracts).

[0113] In summary, the second angle G2 and the fourth angle G4 can open the door 30 from the closed state to the fifth angle G. max The entire process is divided into three stages. The following will introduce the cooperation relationship between the first axis 41 and the first track groove 50, and the cooperation relationship between the second axis 42 and the second track groove 60 in these three stages.

[0114] Phase 1

[0115] like Figure 14 As shown, in the first stage, the door 30 is rotated open from the closed state to the second angle G2. The positioning center axis P moves from the starting positioning point P0 along the straight trajectory segment of the first trajectory line S towards the direction closer to the door side wall 32, and the guide center axis Q moves from the starting guide point Q0 along the second trajectory line K towards the direction closer to the door side wall 32 and away from the front wall 31.

[0116] For example, the positioning center axis P moves from the starting positioning point P0 along the straight trajectory segment of the first trajectory line S, passing through the first positioning point P1 to the second positioning point P2; the guide center axis Q moves from the starting guide point Q0 along the second trajectory line K, passing through the first guide point Q1 to the second guide point Q2.

[0117] like Figure 12 and Figure 14 As shown, during the opening process in the first stage, with the first track groove 50 and the second track groove 60 as references, the axis line segment PQ rotates clockwise from P0Q0 and moves outwards sequentially to P1Q1 and P2Q2.

[0118] Understandably, since the first track groove 50 and the second track groove 60 are fixed relative to the door body 30, the movement of the axis segment PQ represents the movement of the first hinge plate 410 disposed on the housing 10. Therefore, if the door body 30 is taken as a reference, during the process of the door body 30 opening from the closed state to the second angle G2, the housing 10 (or the first hinge plate 410) rotates clockwise relative to the door body 30 and moves a certain distance to the outside.

[0119] Based on the relativity of motion, when the cabinet 10 (or the first hinge plate 410) is used as a reference, during the process of the door 30 opening from the closed state to the second angle G2, the door 30 rotates counterclockwise relative to the cabinet 10 while moving a certain distance inward to avoid the door 30 colliding with the cabinet 100.

[0120] Phase 2

[0121] like Figure 15 and Figure 16 As shown, in the second stage, the door 30 rotates open from the second angle G2 to the fourth angle G4. The positioning center axis P moves from the second positioning point P2 along the curved trajectory segment of the first trajectory line S towards the direction closer to the door side wall 32 and closer to the door front wall 31. The guide center axis Q moves from the second guide point Q2 along the second trajectory line K towards the direction closer to the door side wall 32 and farther away from the door front wall 31.

[0122] Phase Three

[0123] like Figure 17 As shown, in the third stage, the door 30 rotates open from the fourth angle G4 to the fifth angle G max The positioning center axis P moves from the fourth positioning point P4 along the curved trajectory segment of the first trajectory line S towards the direction closer to the door side wall 32 and the front wall 31, and the guide center axis Q moves from the fourth guide point Q4 along the second trajectory line K towards the direction closer to the door side wall 32 and the front wall 31.

[0124] like Figure 12 and Figure 17 As shown, during the opening process in the second and third stages, with the first track groove 50 and the second track groove 60 as references, the axis line segment PQ rotates clockwise from P2Q2 and moves outward sequentially to P3Q3, P4Q4, and P5Q5.

[0125] It is understandable that, since the first track groove 50 and the second track groove 60 are provided on the door body 30, the movement of the axis segment PQ can represent the movement of the first hinge plate 410 provided on the housing 10. Therefore, if the door body 30 is taken as a reference, during the process of the door body 30 opening from the second angle G2 to the fourth angle G4, the housing 10 (or the first hinge plate 410) rotates clockwise relative to the door body 30 while moving outward and closer to the door body 30.

[0126] Based on the relativity of motion, if the cabinet 10 is taken as the reference (or the first hinge plate 410 is taken as the reference), during the process of the door 30 opening from the second angle G2 to the fourth angle G4, the door 30 rotates counterclockwise relative to the cabinet 10 while moving inward and towards the cabinet 10 to avoid the door 30 colliding with the cabinet 100.

[0127] In summary, when the door 30 is opened from the closed state to the fifth angle G... max During the process, the door 30 rotates while constantly moving inward; in other words, the door 30 constantly rotates around a dynamically changing point. The first axis 41 constantly moves relative to the first track groove 50, and the second axis 42 constantly moves relative to the second track groove 60.

[0128] In some embodiments, as Figures 5 to 11 As shown, a plane located outside the reference plane M0 is defined as the first reference plane M1. The first reference plane M1 is parallel to the reference plane M0, and the distance between the two planes is the width α of the reserved gap 101. That is, the first reference plane M1 is the plane of the cabinet 100 near the inner wall of the cabinet body 10. The plane where the retrieval opening is located is defined as the second reference plane M2. The first reference plane M1 and the second reference plane M2 are stationary relative to the cabinet body 10. That is, during the opening of the door 30, the first reference plane M1 and the second reference plane M2 will not move with the movement of the door 30.

[0129] It should be noted that the second reference plane M2 is the plane where the loading and unloading port is located as defined by the housing 10, and it will not move due to the presence of deformable door seals or other components at the loading and unloading port of the housing.

[0130] like Figure 11 As shown, in the first stage described above, the first side edge W moves along the trajectory W0W1W2 towards the first reference plane M1 and towards the second reference plane M2, and the distance between the first side edge W and the first reference plane M1 decreases. The second side edge N moves along the trajectory N0N1N2 towards the second reference plane M2 and away from the first reference plane M1, and the distance between the second side edge N and the second reference plane M2 decreases.

[0131] For example, the first side edge trajectory W0W1W2 and the second side edge trajectory N0N1N2 are smooth curves to ensure smooth movement of the first side edge W and the second side edge N.

[0132] In some embodiments, the first side edge trajectory W0W1W2 is located inside the first reference plane M1, and the distance between the first side edge trajectory W0W1W2 and the first reference plane M1 is not less than a first predetermined distance D3. The second side edge trajectory N0N1N2 is located in front of the second reference plane M2 (i.e., the side closer to the door 30), and the distance between the second side edge trajectory N0N1N2 and the second reference plane M2 is not less than a second predetermined distance D4. This configuration improves the smoothness of the movement of the first side edge W and the second side edge N during the opening of the door 30, and prevents collisions with the front face of the cabinet 100 or the box 10.

[0133] For example, the distance between the endpoint W2 of the first side edge trajectory W0W1W2 and the first reference plane M1 is a first predetermined distance D3, and the distance between the endpoint N2 of the second side edge trajectory N0N1N2 and the second reference plane M2 is a second predetermined distance D4.

[0134] For example, when the thickness of the door body 30 is h (e.g., greater than 2 cm), the first predetermined distance D3 is any value between 0.5h and 0.75h, and the second predetermined distance D4 is any value between 0.12h and 0.2h. For example, the first predetermined distance D3 is 0.676h, and the second predetermined distance D4 is 0.165h.

[0135] In this way, when the door 30 is opened to the second angle G2, the second side edge N of the door 30 will not collide or be squeezed with the front end face of the cabinet 10, nor will it be too far away from the cabinet 10; the first side edge W will not collide with the cabinet 100, and it is beneficial to improve the stability of the door 30 movement.

[0136] Understandably, the size of the first preset distance D3 limits the extent to which the first side edge W can extend beyond the reference plane M0 during the opening of the door 30. In practical applications, the first side edge W can extend beyond the reference plane M0 by a certain distance. For example, when the refrigerator 1 is embedded in the cabinet 100, there is a pre-reserved gap between the cabinet 10 and the cabinet 100, allowing the first side edge W to extend beyond the reference plane M0 by a certain distance during the opening of the door 30.

[0137] The size of the second preset distance D4 limits the extent to which the second side edge N can compress the box 10 during the opening of the door 30. In practical applications, the second side edge N can exert a certain degree of pressure on the box 10. For example, a door seal is provided on the front end face of the box 10. The door seal is elastic and deformable, so that the pressure exerted by the second side edge N on the box 10 can be ignored.

[0138] In some embodiments, during the process of the door 30 opening from the closed state to the second angle G2, the angle between the movement direction of the first side edge W and the first reference plane M1 is denoted as the first direction angle, for example, the first direction angle is any value between 0° and 15°. The angle between the movement direction of the second side edge N and the second reference plane M2 is denoted as the second direction angle, for example, the second direction angle is any value between 0° and 30°.

[0139] It should be noted that the direction of movement of the first side edge W is the tangent direction of the first side edge trajectory W0W1W2 at the position where the first side edge W is located on the first side edge trajectory W0W1W2; the direction of movement of the second side edge N is the tangent direction of the second side edge trajectory N0N1N2 at the position where the second side edge N is located on the second side edge trajectory N0N1N2.

[0140] During the process of the door 30 opening from the closed state to the second angle G2, both the first directional angle and the second directional angle show a decreasing trend, which can improve the smoothness of the movement of the door 30 and avoid sliding or jamming.

[0141] In some embodiments, during the process of the door 30 opening from the closed state to the second angle G2, the projection of the first side edge trajectory W0W1W2 onto the first reference plane M1 is the first projection line segment W'0W'2, and the projection of the second side edge trajectory N0N1N2 onto the second reference plane M2 is the first projection line segment N'0N'2. The length of the first projection line segment W'0W'2 is less than the length of the first projection line segment N'0N'2, and W'0W'2:N'0N'2∈[0.6,0.8], thereby making the movement of the first side edge W and the second side edge N smooth and not exceeding the predetermined range.

[0142] In some embodiments, as Figure 11 As shown, when the door 30 opens from the second angle G2 to the fifth angle G... max During the process, the first side edge W moves along the trajectory of the third side edge W2W3W4W5 in a direction away from the first reference plane M1 and closer to the second reference plane M2, and the distance between the first side edge W and the first reference plane M1 increases. The second side edge N moves along the trajectory of the fourth side edge N2N3N4N5 in a direction away from the second reference plane M2 and away from the first reference plane M1, and the distance between the second side edge N and the second reference plane M2 increases.

[0143] The third side edge trajectory W2W3W4W5 and the fourth side edge trajectory N2N3N4N5 are smooth curves. The first side edge trajectory W0W1W2 is smoothly connected to the third side edge trajectory W2W3W4W5, and the second side edge trajectory N0N1N2 is smoothly connected to the fourth side edge trajectory N2N3N4N5, so that the first side edge W and the second side edge N move smoothly.

[0144] In some embodiments, when the door 30 is opened from the second angle G2 to the fifth angle G... max During the process, the angle between the direction of movement of the first side edge W and the first reference plane M1 is denoted as the third direction angle, which is any value between 0° and 80°. The angle between the direction of movement of the second side edge N and the second reference plane M2 is denoted as the fourth direction angle, which is any value between 0° and 90°.

[0145] It should be noted that the direction of movement of the first side edge W is the tangent direction of the third side edge trajectory W2W3W4W5 at the corresponding position of the first side edge W on the third side edge trajectory W2W3W4W5, and the direction of movement of the second side edge N is the tangent direction of the fourth side edge trajectory N2N3N4N5 at the corresponding position of the second side edge N on the fourth side edge trajectory N2N3N4N5.

[0146] In some embodiments, when the door 30 is opened from the second angle G2 to the fifth angle G... max During the process, for each unit angle the door 30 opens, the increments of the included angles in the third and fourth directions are relatively small. For example, for each unit angle the door 30 opens, the increments of the included angles in the third and fourth directions are any values ​​between 0.7° and 1.5°.

[0147] It should be noted that when the door 30 is opened from the second angle G2 to the fifth angle G... max During the process, for each unit angle the door 30 opens, the increment of the included angle in the third direction and the included angle in the fourth direction can be constant at any value between 0.7° and 1.5°. Alternatively, for each unit angle the door 30 opens, the increment of the included angle in the third direction and the included angle in the fourth direction can vary arbitrarily between 0.7° and 1.5°.

[0148] Understandably, the above settings make the trajectories of the third side edge W2W3W4W5 and the fourth side edge N2N3N4N5 relatively smooth, which helps to improve the smoothness of the movement of the first side edge W and the second side edge N.

[0149] In addition, the endpoint N5 of the fourth side edge trajectory N2N3N4N5 is located on the side of the second reference plane M2 closer to the door body 30, so that the door body 30 can be opened to a larger angle.

[0150] Based on the characteristics of the aforementioned trajectory, as the door 30 opens from the second angle G2 to the fifth angle G... max During the process, the door 30 will not squeeze the cabinet 10, nor will it collide with the cabinet 100, and the movement is smooth.

[0151] In summary, the first trajectory line S and the second trajectory line K are smooth curves, which can improve the smoothness of the movement of the first axis 41 relative to the first trajectory groove 50 and the second axis 42 relative to the second trajectory groove 60.

[0152] In some embodiments, see Figure 3 The first trajectory line S and the second trajectory line K are regular curves. The curved trajectory segment of the first trajectory line S and the second trajectory line K are smooth curves. The curved trajectory segment of the first trajectory line S smoothly transitions to the straight trajectory segment; for example, the straight trajectory segment is tangent to the curved trajectory segment.

[0153] Correspondingly, the plane containing the top wall of the housing 10 is defined as the first projection plane. The orthographic projection of the curved groove wall of the first track groove 50 onto the first projection plane is a smooth curve, and the orthographic projection of the groove wall of the second track groove 60 onto the first projection plane is also a smooth curve. The groove walls of the straight groove segments and the curved groove segments of the first track groove 50 are smoothly connected.

[0154] As set up above, the movement of the first shaft 41 relative to the first track groove 50 and the movement of the second shaft 42 relative to the second track groove 60 are continuous and uninterrupted during the opening of the door 30. This helps to improve the smoothness of the movement of the hinge shaft relative to the track groove, thereby extending the service life of the hinge shaft and ensuring that the door 30 opens smoothly.

[0155] In some embodiments, the movement of the first shaft 41 relative to the first track groove 50 and the movement of the second shaft 42 relative to the second track groove 60 are equivalent to the movement of the roller relative to the cam. For a cam mechanism with a roller follower, the size of the roller radius will affect the shape of the actual profile curve of the cam.

[0156] like Figure 18 As shown in a), when the theoretical profile curve of the cam is a concave curve, ρ′=ρ+rT. Where ρ is the theoretical profile radius; ρ′ is the actual profile radius; and rT is the roller radius.

[0157] As shown in a), the size of the roller radius rT is not limited by the theoretical profile radius ρ. Therefore, no matter how large the roller radius is, the working profile of the cam is always a smooth curve.

[0158] When the theoretical profile curve of the cam is a convex curve, then ρ=ρ′-rT.

[0159] (1) As Figure 18 As shown in b), when ρmin > rT and ρ′ > 0, the actual profile curve is a smooth curve. Here, ρmin is the minimum radius of curvature of the convex portion of the theoretical profile curve.

[0160] (2) Figure 18As shown in c), when ρmin=rT, ρ′=0, a sharp point will be generated on the actual profile curve of the cam. The sharp point is prone to wear, which leads to a change in the motion law of the cam.

[0161] (3) Figure 18 As shown in d), when ρmin<rT, ρ′<0, the actual contour curves intersect. The portion of the actual contour curve above the intersection point will be cut off during processing, thus preventing the motion law from being realized.

[0162] Therefore, in order to prevent sharp points and intersections from occurring at any position on the cam profile, the roller radius rT needs to be set to be smaller than the minimum radius of curvature ρmin of the convex part of the theoretical profile curve. For example, the roller radius rT ≤ 0.8ρmin.

[0163] As described above, the curved trajectory segment of the first trajectory line S corresponds to the theoretical cam profile curve of the first trajectory groove 50. For example, the theoretical cam profile curve is a convex curve (the curved groove segment protrudes towards the direction close to the second side edge N), and the curved groove wall of the first trajectory groove 50 near the front wall 31 is the actual profile curve.

[0164] It is understandable that the radius of the first shaft 41 is equivalent to the roller radius rT, and the size of the radius of the first shaft 41 satisfies the setting in (1) (i.e., ρmin>rT), thereby ensuring that the curved groove wall of the first track groove 50 near the front wall 31 of the door is a smooth curve.

[0165] In some embodiments, the second trajectory line K corresponds to the theoretical profile curve of the cam of the second trajectory groove 60. For example, the theoretical profile curve of the cam is an outwardly convex curve (the second trajectory groove protrudes in a direction away from the front wall of the door), and the curved groove wall of the second trajectory groove 60 near the front wall 31 is the actual profile curve.

[0166] It is understandable that the radius of the second shaft 42 is also equivalent to the roller radius rT. The size of the radius of the second shaft 42 satisfies the setting in (1) (i.e., ρmin>rT), thereby ensuring that the curved groove wall of the second track groove 60 near the front wall 31 of the door is a smooth curve.

[0167] In some embodiments, the curved trajectory segment of the first trajectory line S and the second trajectory line K can also be set as concave curves.

[0168] In some embodiments, as Figures 19 to 24 As shown, the direction of movement of the positioning center axis P along the first trajectory line S is denoted as the first displacement direction, and the direction of movement of the guide center axis Q along the second trajectory line K is denoted as the second displacement direction. During the opening process of the door 30, the angle formed by the first displacement direction and the second displacement direction is denoted as the displacement angle ω.

[0169] During the process of the door 30 opening from the closed state to the fourth angle G4 (i.e., 90°), the displacement angle ω formed by the first displacement direction and the second displacement direction remains unchanged or varies within a small range, that is, varies within a preset range.

[0170] For example, during the process of the door 30 opening from the closed state to the fourth angle G4, the absolute value of the difference between the displacement angles when the door 30 opens to any two angles is recorded as the angle difference Δω. When the displacement angle ω remains constant, Δω is 0; when the displacement angle ω changes within a preset range, Δω ∈ [0°, 8°].

[0171] For example, the opening angle of the door 30 also includes the first intermediate angle G. i Second intermediate angle G j First intermediate angle G i Second intermediate angle G j Greater than 0° and less than the fourth angle G4. When the door 30 is opened to the first intermediate angle G... i Second intermediate angle G j When, the displacement angles are denoted as ω. i and ω j Then, the angle difference Δω=|ω i -ω j |∈[0°, 8°].

[0172] For example, such as Figures 20 to 24 As shown, when the door 30 is in the closed state, the displacement angle is denoted as ω0. When the door 30 is opened to the first angle G1, the second angle G2, the third angle G3, and the fourth angle G4, the displacement angles are denoted as ω1, ω2, ω3, and ω4, respectively. Therefore, the angle difference Δω = |ω m -ω n |∈[0°, 8°]; where m≠n, and m and n are any natural numbers between 0 and 4 (inclusive).

[0173] For example, the angle difference Δω=|ω m -ω n |∈[0°, 4°], and ω1, ω2, ω3 and ω4 are any values ​​between 60° and 64°.

[0174] In some embodiments, during the process of the door 30 opening from the closed state to the fourth angle G4, the angle between the first displacement direction and the first reference plane M1 remains unchanged at first (the first axis 41 moves along the straight trajectory segment), and then gradually decreases (the first axis 41 moves along the curved trajectory segment).

[0175] For example, while the angle between the first displacement direction and the first reference plane M1 remains constant, the first displacement direction is always parallel to the second reference plane M2. As the angle between the first displacement direction and the first reference plane M1 gradually decreases, the first shaft 41 performs a circular arc motion with a constant radius relative to the first trajectory groove 50. The minimum value of the angle between the first displacement direction and the first reference plane M1 is not less than 45°.

[0176] The angle between the second displacement direction and the second reference plane M2 gradually decreases. The minimum value of the angle between the second displacement direction and the second reference plane M2 is not less than 20°.

[0177] As set above, the displacement angle fluctuates within a small range or remains relatively constant. In this way, when the user opens the door 30 with a constant force (about 5N), the change in the force on the hinge shaft (i.e., the first shaft 41 and the second shaft 42) remains relatively constant, thereby effectively reducing the wear of the hinge shaft and the track groove.

[0178] In some embodiments, as Figure 25 As shown, when the door 30 is in the closed state, the plane passing through the first side edge W and parallel to the second reference plane M2 (i.e., perpendicular to the reference plane M0) is defined as the third reference plane M3. When the door 30 is closed, the third reference plane M3 intersects the reference plane M0 at the theoretical first side edge W.

[0179] The angle bisector of the angle formed by the front wall 31 and the side wall 32 of the door is defined as the fourth reference plane H. The dihedral angle formed by the portion of the third reference plane M3 located inside the reference plane M0 and the portion of the reference plane M0 located behind the third reference plane M3 (i.e., the side closer to the housing 10) is denoted as the first included angle σ, for example, the first included angle σ is 90°. When the door 30 is closed, the fourth reference plane H bisects the first included angle σ.

[0180] It should be noted that during the opening process of the door 30 relative to the box 10, the fourth reference plane H moves with the door 30 relative to the box 10.

[0181] In some embodiments, when the door 30 is closed, the positioning center axis P is located at the starting positioning point P0 of the first trajectory line S. The angle between the perpendicular line segment WP0 from the starting positioning point P0 to the first side edge W and the straight trajectory segment is θ (e.g., θ∈(0°, 90°]). The distance between the first side edge W and the straight line containing the straight trajectory segment is R, where R is a constant.

[0182] It is understandable that when the door body 30 rotates only around the first axis 41 (and the positioning center point P is located at the starting positioning point P0), when the door body 30 rotates to the point where the line segment WP0 is parallel to the second reference plane M2, the distance E between the first side edge W and the reference plane M0 is at its maximum, and the maximum value of distance E is E max =R / sinθ–Rcotθ=R(1 / sinθ–cotθ), where, during the process of the door 30 rotating from the closed state to the point where the line segment WP0 is parallel to the second reference plane M2, the angle of rotation of the door 30 around the first axis 41 is θ.

[0183] Thus, by taking the derivative of Emax with respect to θ, we can obtain:

[0184] E' max =R[(1 / sinθ)'-cot'θ]

[0185] =R[-cosθ / sin 2 θ+1 / sin 2 θ]

[0186] =(R / sin 2 θ)*(1-cosθ).

[0187] It is understandable that, since θ∈(0°, 90°], therefore (R / sin 2 θ)*(1-cosθ)>0, that is, E max =R / sinθ–Rcotθ=R(1 / sinθ–cotθ) is an increasing function with respect to θ.

[0188] like Figure 25 As shown, any point on the first trajectory line S located on the side of the fourth reference plane H closest to the door sidewall 32 is defined as the first setting position A1; the intersection of the straight trajectory segment of the first trajectory line S with the fourth reference plane H is defined as the second setting position A2; any point on the straight trajectory segment of the first trajectory line S located on the side of the fourth reference plane H furthest from the door sidewall 32 is defined as the third setting position A3; the perpendicular line segment from the first setting position A1 to the first side edge W is denoted as line segment WA1, and the angle between WA1 and the straight trajectory segment is denoted as θ1. The perpendicular line segment from the second setting position A2 to the first side edge W is denoted as line segment WA2, and the angle between WA2 and the straight trajectory segment is denoted as θ2. The shortest line segment from the third setting position A3 to the first side edge W is denoted as line segment WA3, and the angle between WA3 and the straight trajectory segment is denoted as θ3, where θ1 is greater than θ2, and θ2 is greater than θ3.

[0189] Understandably, due to E max =R / sinθ – Rcotθ is an increasing function of θ, from which we can obtain: E max (θ1)>Emax (θ2)>E max (θ3).

[0190] In summary, when the door body 30 rotates only around the first axis 41, if the starting positioning point P0 is set at the first setting position A1, the distance by which the first side edge W extends beyond the reference plane M0 is the greatest during the opening of the door body 30. If the starting positioning point P0 is set at the third setting position A3, the distance by which the first side edge W extends beyond the reference plane M0 is the smallest during the opening of the door body 30.

[0191] Therefore, in order to embed the refrigerator 1 into the cabinet 100, the distance between the starting positioning point P0 and the door side wall 32 can be set to be large (e.g., set at the second positioning position A2 or the third positioning position A3) to reduce the distance that the door 30 needs to move inward while rotating.

[0192] For example, the starting positioning point P0 is set on the fourth reference plane H at the angle formed by the front wall 31 and the side wall 32 of the door, that is, at the second setting position A2, so that the movement of the door body 30 is stable and the distance that the door body 30 needs to move inward while rotating can be reduced.

[0193] It should be noted that the relative positions of the first track groove 50 and the second track groove 60 are constant. The position of the starting positioning point P0 relative to the fourth reference plane H (in other words, the distance between the starting positioning point P0 and the side wall 32) determines the distance between the door body 30 and the first reference plane M1 when the door body 30 is rotated open to 90° (i.e., the fourth angle G4). For example, when the distance between the starting positioning point P0 and the door side wall 32 increases, the distance between the door body 30 and the first reference plane M1 also increases when the door body 30 is rotated open to 90°, allowing the maximum opening angle of the door body 30 to be larger.

[0194] In some embodiments, see Figure 9 When the door 30 is opened to 90°, the distance between the front wall 31 of the door and the reference plane M0 is denoted as the first distance λ. When the front wall 31 is located inside the reference plane M0, the first distance λ is denoted as a positive number.

[0195] In some embodiments, as Figure 26 As shown, if the initial positioning point P0 is set at the first setting position A1, when the door 30 is opened to 90°, the first distance λ is 0, that is, the front wall 31 of the door is flush with the reference plane M0. For example, the distance between the first setting position A1 and the second setting position A2 is no more than 2mm, so that the initial positioning point P0 is located close to the fourth reference plane H, which helps to improve the stability of the movement of the first axis 41 relative to the door 30 and can avoid the door 30 from colliding with the cabinet 100 during the opening process.

[0196] In some embodiments, as Figure 27 As shown, if the initial positioning point P0 is located at the third positioning position A3, when the door 30 is opened to 90°, the first distance λ > 0, that is, the front wall 31 of the door is located inside the reference plane M0, thereby allowing the door 30 of the refrigerator 1 embedded in the cabinet 100 to open to a larger angle. For example, λ is any value between 0.5mm and 2mm. For example, λ is 0.5mm, 1mm, or 2mm. For example, the distance between the second positioning position A2 and the third positioning position A3 is not greater than 2mm, so that the initial positioning point P0 is located close to the fourth reference plane H, which helps to improve the stability of the first axis 41 relative to the door 30 and can avoid the door 30 from colliding with the cabinet 100 during the opening process.

[0197] In some embodiments, when the door 30 is opened by rotating 45° about the first axis 41, the fourth reference plane H is parallel to the third reference plane M3. When the door 30 is opened to 90°, the front wall 31 of the door is parallel to or flush with the reference plane M0. It should be noted that the flushing includes complete flushing and also includes approximately flushing.

[0198] In some embodiments, when the door 30 is opened to approximately a first preset angle, the first axis 41 moves to the other end (second positioning point P2) of the straight trajectory segment of the first trajectory line S. For example, the first preset angle is any value between 43° and 47°. For example, the first preset angle is 43°, 45°, or 47°.

[0199] In some embodiments, refer to Figure 28 When the door 30 is in the closed state, there is a first gap μ1 between the first shaft 41 and the end wall of the first track groove 50 away from the door side wall 32, and there is a second gap μ2 between the second shaft 42 and the end wall of the second track groove 60 away from the door side wall 32. The widths of both the first gap μ1 and the second gap μ2 are greater than 0.

[0200] It is understandable that by setting a first gap μ1 and a second gap μ2 between the hinge shaft and the end wall of the track groove, the door 30 can be prevented from springing away from the box 10 when it is closed by the user with a large force.

[0201] In some embodiments, as Figure 29 As shown, the door body 30 includes a door seal, which is located on the side of the door body 30 near the housing 10. The door seal is a magnetic elastomer.

[0202] When the door 30 is in the closed state, if a force is continued to be applied to the door 30, causing the door 30 to continue to rotate clockwise relative to the housing 10 and squeeze the door seal, the front wall 31 will move to the side of the third reference plane M3 closer to the housing 10, resulting in a squeezing angle δ1 between the front wall 31 and the third reference plane M3.

[0203] For example, when the door 30 continues to rotate clockwise relative to the housing 10 and squeezes the door seal, the first shaft 41 contacts the end wall of the first track groove 50 away from the door side wall 32, and the second shaft 42 contacts the end wall of the second track groove 60 away from the door side wall 32, and the squeeze angle δ1 between the front wall 31 of the door and the third reference plane M3 is any value between 0° and 3°.

[0204] like Figure 30 As shown, the first trajectory line S also includes a reserved positioning point P', which is located on the side of the starting positioning point P0 away from the door sidewall 32. When the first axis 41 contacts the end wall of the first trajectory groove 50 away from the door sidewall 32, the positioning center axis P is located at the reserved positioning point P'. The trajectory segment between the reserved positioning point P' and the starting positioning point P0 is denoted as the reserved trajectory segment P'P0, and the first reserved trajectory segment P'P0 maintains the same trend as the straight trajectory segment. For example, the first reserved trajectory segment P'P0 is collinear with the straight trajectory segment.

[0205] The second trajectory line K also includes a reserved guide point Q'. When the second axis 42 contacts the end wall of the second trajectory groove 60 at the end furthest from the door side wall 32, the guide center axis Q is located at the reserved guide point Q'. The trajectory segment between the reserved guide point Q' and the starting guide point Q0 is denoted as the second reserved trajectory segment Q'Q0, and the reserved trajectory segment Q'Q0 maintains the same trajectory trend as the second trajectory line K.

[0206] In summary, when the door 30 is closed, the first axis 41 moves to the starting positioning point P0, and the second axis moves to the starting guide point Q0. When the door 30 is subjected to external force or inertia, it can continue to rotate clockwise by an angle G' (e.g., G'≥δ1), so that the first axis 41 continues to move along the first trajectory line S from the starting positioning point P0 to the reserved positioning point P', and the second axis 42 continues to move from the starting guide point Q0 to the reserved guide point Q'. This can prevent the second axis 42 from being impacted by the end of the second trajectory groove 60 when the door 30 is closed by the user with a large force.

[0207] In some embodiments, the door 30 rotates around the point of change (X,Y) during the opening process, and the trajectory of the point of change is (X=(X1+X2+X3+X4) / 4,Y=(Y1+Y2+Y3+Y4) / 4).

[0208] Wherein, X represents the distance of the change point from the side wall 32 of the door; Y represents the distance of the change point from the front wall 31 of the door.

[0209] The plane containing the bottom of the hinge groove is defined as the second projection plane, the orthographic projection of the positioning center axis P on the second projection plane is the positioning center point P', and the orthographic projection of the guide center axis Q on the second projection plane is the guide center point Q'.

[0210] X1 represents the distance between the positioning center point P' and the door side wall 32 when the door 30 is closed; X2 represents the distance between the guide center axis Q and the door side wall 32 when the door is closed; X3 represents the distance between the positioning center point P' and the door side wall 32 when the door is rotated open; X4 represents the distance between the guide center point Q' and the door side wall 32 when the door is rotated open.

[0211] Y1 represents the distance between the positioning center point P' and the front wall 31 when the door is closed; Y2 represents the distance between the guide center point Q' and the front wall 31 when the door is closed; Y3 represents the distance between the positioning center point P' and the front wall 31 when the door is rotated open; Y4 represents the distance between the guide center point Q' and the front wall 31 when the door is rotated open.

[0212] Reference Figure 31 When the door is closed, the distance from the positioning center point P' to the door side wall 32 is a, the distance from the positioning center point P' to the door front wall 31 is b, the distance between the positioning center point P' and the guide center point Q' is L, and the angle between the straight line containing line segment P'Q' and the third reference plane M3 is m. The length of the straight line trajectory segment is K'. Taking the curved trajectory segment as an example where it is an arc, the radius of the curved trajectory segment is R.

[0213] During the opening process of the door 30, when the first axis 41 moves to the second positioning point P2, the rotation angle of the door 30 relative to the closed state is the second rotation angle s. When the door rotates to the third rotation angle t, the first axis 41 moves along the first track groove 50 in a direction away from the door side wall 32.

[0214] It should be noted that the second rotation angle s corresponds to the second angle G2. For ease of description, the second angle G2 is represented by s. The third rotation angle t does not correspond to the third angle G3.

[0215] When the door 30 is in the closed state, the position of the positioning center point P' is (a, b), and the position of the second positioning point P2 is (a+L*cosm, bL*sinm).

[0216] Reference Figure 32 ① When the rotation angle of the door is n, the moving distance of the positioning center point P' is k (0 < k ≤ K'), and 0 ≤ n ≤ s:

[0217] Before the door body 30 rotates, the position of the positioning center point P' is: X1 = a, Y1 = b;

[0218] Before the door body 30 rotates, the position of the guide center point Q' is: X2=a+L*cosm,Y2=bL*sinm;

[0219] After the door body rotates 30 degrees, the position of the positioning center point P' is: X3=a+k*cosn,Y3=bk*sinn;

[0220] After the door body rotates 30 degrees, the position of the guide center point Q' is: X4 = a + k * cosn + L * cos(n + m).

[0221] Y4 = bk*sinn - sin(n+m).

[0222] Reference Figure 33 ② When the rotation angle of the door is n, and s≤n≤t, the distance of the positioning center point P' before and after the door rotates by 30° can be calculated as 2R*[sin(ns) / 2].

[0223] After the door body rotates 30 degrees, the position of the positioning center point P' is: X3 = a, Y3 = b;

[0224] After the door body rotates 30 degrees, the position of the guide center point Q' is: X4 = a + L * cosm; Y4 = bL * sinm;

[0225] Before the door body 30 rotates, the position of the positioning center point P' is: X1=a+2R*[sin(ns) / 2]*[cos(3n-s) / 2],Y1=b-2R*[sin(ns) / 2]*[sin(3n-s) / 2];

[0226] Before the door body 30 rotates, the position of the guide center point Q' is: X2=a+2R*[sin(ns) / 2]*[cos(3n-s) / 2]+L*cos(n+ms); Y2=b-2R*[sin(ns) / 2]*[sin(3n-s) / 2]-L*sin(n+ms).

[0227] Reference Figure 34 ③ When the rotation angle of the door is n, and n≥t, the distance between the positioning center point P' and the front of the door after a 30° rotation is 2R*[sin(nt) / 2].

[0228] Before the door body rotates, the positioning center point P' is: X1 = a, Y1 = b;

[0229] Before the door rotates 30, the guide center point Q' is: X2 = a + L*cosm; Y2 = bL*sinm;

[0230] After the door body rotates 30 degrees, the positioning center point P' is: X3=a-2R*[sin(nt) / 2]*[cos(180°-(3n-t) / 2)],Y3=b+2R*[sin(nt) / 2]*[sin(180-(3n-t) / 2)];

[0231] After the door body rotates 30 degrees, the guide center point Q' is:

[0232] X4=a-2R*[sin(nt) / 2]*[cos(180°-(3n-t) / 2)]+L*cos(m+nt),

[0233] Y4=b+2R*[sin(nt) / 2]*[sin(180-(3n-t) / 2)]-L*sin(m+nt).

[0234] When the rotation angle of the door body 30 is s, k = K'. At this time, the point of change satisfies ①②, and s can be obtained.

[0235] When the rotation angle of the door body 30 is t, the point of change satisfies ②③, and t can be obtained.

[0236] It should be noted that the different embodiments described above can be combined or integrated with each other, and each embodiment is not limited to another embodiment. Those skilled in the art will understand that the scope of this application is not limited to the specific embodiments described above, and that certain elements of the embodiments can be modified and substituted without departing from the spirit of this application. The scope of this application is limited by the appended claims.

Claims

1. A refrigerator, characterized in that its include: The enclosure (10), hinge assembly (20), door (30), and refrigeration unit; The cabinet (10) includes an inner liner, an outer shell connected to the outside of the inner liner to form the appearance of the refrigerator, and a heat insulation layer disposed between the inner liner and the outer shell; The inner liner defines a storage chamber, one side of which is open to form an access port; The refrigeration unit is configured to provide cold air to the storage compartment; The door (30) is connected to the front end of the box (10) via a hinge assembly (20). The door (30) can rotate relative to the box (10) to open or close the loading and unloading port. The hinge assembly (20) consists of a first hinge assembly (40) and a second hinge assembly (70). The first hinge assembly (40) is located on the upper part of the box (10) and is fixedly connected to the box (10) and the door (30) respectively. The second hinge assembly (70) is located on the lower part of the box (10) and is fixedly connected to the box (10) and the door (30) respectively. The housing (10) includes a first body sidewall (11) and a second body sidewall (12) disposed opposite to each other, and the first body sidewall (11) is the side wall of the housing (10) near the hinge assembly (20); The door body (30) includes a left side wall, a right side wall, a top side wall, a bottom side wall, and a front side wall, wherein the side wall of the door body (30) closer to the hinge assembly (20) is referred to as the door side wall (32); and, The side wall of the door (30) away from the box (10) when closed is called the front wall (31), and the side wall of the door (30) close to the box (10) when closed is called the rear wall (33). The front wall (31) and the side wall (32) intersect to form the first side edge W, and the side wall (32) and the rear wall (33) intersect to form the second side edge N. The first hinge assembly (40) includes a first hinge plate (410), a first shaft (41), a second shaft (42), a first track groove (50), and a second track groove (60), wherein the first hinge plate (410), the first shaft (41), and the second shaft (42) are integral parts; wherein, The first hinge plate (410) includes a first connecting part (411) and a first extension part (412). The first connecting part (411) is fixedly connected to the box body (10), and the first extension part (412) is connected to the first connecting part (411) and extends horizontally to the front side above the door body (30). The first shaft (41) and the second shaft (42) are both disposed on the first extension (412) and extend downward from the lower surface of the first extension (412); the second shaft (42) is further away from the first body sidewall (11) than the first shaft (41), and when the door (30) is closed, the central axis of the first shaft (41) is located on the side of the angle bisector H away from the door sidewall (32), wherein the angle bisector of the angle formed by the front wall (31) of the door and the side wall (32) is denoted as the angle bisector H; The first shaft (41) is inserted into the first track groove (50) and cooperates with the first track groove (50); the second shaft (42) is inserted into the second track groove (60) and cooperates with the second track groove (60); and when the door body (30) rotates, the first shaft 41 moves relative to the first track groove (50), and the second shaft (42) moves relative to the second track groove (60); The second hinge assembly (70) includes a second hinge plate, the second hinge plate includes a second connecting part and a second extension part, the second connecting part being fixedly connected to the front end face of the housing (10). The second extension extends horizontally from the side of the second connection portion away from the housing (10) toward the bottom of the door (30) in a direction away from the housing (10), and the first shaft (41) and the second shaft (42) extend upward from the upper surface of the second extension portion; Corresponding to the positions of the first hinge plate (410) and the second hinge plate, the upper and lower ends of the door body (30) are provided with a first track groove (50) and a second track groove (60); The center axis of the first axis (41) is denoted as the positioning center axis P, and the center axis of the second axis (42) is denoted as the guide center axis Q. During the opening of the door (30), the positioning center axis P moves along the first trajectory line S, and the guide center axis Q moves along the second trajectory line K. The first trajectory line S includes the starting positioning point P0 and the fifth positioning point P5, and the fifth positioning point P5 is closer to the door side wall than the starting positioning point P0 (32); The second trajectory line K includes a guide starting point Q0 and a fifth guide point Q5. The fifth guide point Q5 is farther away from the front wall 31 and closer to the side wall of the door than the guide starting point Q0. When the door (30) is in the closed state, the positioning center axis P is located at the starting positioning point P0 of the first trajectory line S, and the guide center axis Q is located at the guide starting point Q0 of the second trajectory line K. The vertical distance between the first axis (41) and the second axis (42) in the direction parallel to the door side wall (32) is denoted as L1 = D1 - Z1, and L1 is any value between 2.5 mm and 10 mm. The horizontal distance between the first axis (41) and the second axis (42) in the direction perpendicular to the door side wall (32) is denoted as L2, and L2 is any value between 7.5 mm and 30 mm. Among them, the distance between the starting positioning point P0 and the front wall (31) is denoted as D1, and the distance between the guiding starting point Q0 and the front wall (31) is denoted as Z1. When the door (30) is in the closed state, there is a first gap μ1 between the first shaft (41) and the end wall of the first track groove (50) away from the door side wall (32), and there is a second gap μ2 between the second shaft (42) and the end wall of the second track groove (60) away from the door side wall (32). The widths of the first gap μ1 and the second gap μ2 are both greater than 0. When the door (30) is in the closed state, if a force is applied to the door (30) to make the door (30) continue to rotate clockwise relative to the box (10) and squeeze the door seal, the front wall (31) of the door will move to the side of the third reference plane M3 closer to the box (10), so that there is a squeezing angle δ1 between the front wall (31) of the door and the third reference plane M3; The plane where the pick-up and put-out opening is located is defined as the second reference plane M2, and the plane that passes through the first side edge W and is parallel to the second reference plane M2 when the door (30) is in the closed state is defined as the third reference plane M3.

2. The refrigerator according to claim 1, characterized in that, As the door (30) continues to rotate from the closed state along the closing direction, the refrigerator satisfies at least one of the following: The first axis (41) moves along the first track groove (50) in a direction away from the door sidewall (32) and contacts the end wall of the first track groove (50) away from the door sidewall (32); or The second axis (42) moves along the second track groove (60) in a direction away from the door side wall (32) and close to the door front wall (31), and contacts the end wall of the second track groove (60) away from the door side wall (32).

3. The refrigerator according to claim 2, characterized in that, When the door (30) continues to rotate clockwise relative to the box (10) and squeezes the door seal, the first shaft (41) contacts the end wall of the first track groove (50) away from the door side wall (32), and the second shaft (42) contacts the end wall of the second track groove (60) away from the door side wall (32). The squeeze angle δ1 between the front wall (31) of the door and the third reference plane M3 is any value between 0° and 3°.

4. The refrigerator according to claim 1, characterized in that, The radius of the first axis (41) is less than or equal to 0.8 times the minimum radius of curvature of the curve segment of the first trajectory line S; the radius of the second axis (42) is less than or equal to 0.8 times the minimum radius of curvature of the second trajectory line K.

5. The refrigerator according to claim 1, characterized in that, When the door (30) is opened from the closed state to G max During the process, the positioning center axis P of the first axis (41) moves unidirectionally toward the door side wall (32) relative to the track groove of the door body (30), so that the door body (30) moves inward. The first trajectory line S includes a curved trajectory segment that extends from one end to the other end of the curved trajectory segment in a direction close to the front wall (31) and the side wall (32) of the door, and always in a direction close to the first side edge W. Furthermore, one end of the second trajectory line K is closer to the front wall (31) and farther from the side wall (32) of the door than the other end, and the second trajectory line K protrudes towards the rear wall of the door.

6. The refrigerator according to any one of claims 1 to 5, characterized in that, The first trajectory line S includes a starting positioning point, a first positioning point and a second positioning point arranged from the starting positioning point toward the door side wall (32), and a third positioning point, a fourth positioning point and a fifth positioning point arranged from the second positioning point toward the front wall (31) and the door side wall (32). The second trajectory line includes a starting guide point, a first guide point, a second guide point, a third guide point and a fourth guide point arranged from the starting guide point in a direction closer to the door side wall (32) and farther from the door front wall (31), and a fifth guide point that is closer to the door side wall (32) and closer to the door front wall (31) than the fourth guide point.

7. The refrigerator according to claim 6, characterized in that, During the process of the door (30) opening from the closed state to the first opening angle, the first axis (41) moves from the starting positioning point to the second positioning point along the first trajectory line S, and the second axis (42) moves from the starting guide point to the second guide point along the second trajectory line K. During the process of the door (30) opening from the first opening angle to the second opening angle, the first axis (41) moves along the first trajectory line S from the second positioning point to the third positioning point to the fourth positioning point, and the second axis (42) moves along the second trajectory line K from the second guide point to the third guide point to the fourth guide point; During the process of the door (30) opening from the second opening angle to the third opening angle, the first axis (41) moves from the fourth positioning point to the fifth positioning point along the first trajectory line, and the second axis (42) moves from the fourth guide point to the fifth guide point along the second trajectory line K.

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