Refrigerator

Abstract

The application provides a refrigerator, which comprises a cabinet, two door bodies, side sealing strips and a hinge assembly. The hinge assembly comprises a guiding part on the door body, a guiding part with a curved guiding track line, a first hinge shaft and a second hinge shaft fixed on the cabinet. When the door body is opened, the first hinge shaft moves along the guiding track line, the second hinge shaft moves along the guiding track line, the door body moves outward, and the upper side sealing strip on the door body is separated from the side sealing strip on the other door body. The guiding track line comprises a first track line and a second track line connected with each other. When the door body is opened to 90 degrees, the central axis of the second hinge shaft moves to the connecting point of the first track line and the second track line. The application effectively avoids the situation that when one door body of a side-by-side refrigerator is opened, the other door body is also opened, which leads to the increase of the opening area of the refrigerator, so that the cold air overflow is reduced.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more particularly to a refrigerator. Background Technology

[0002] In related technologies, for refrigerators with two doors arranged opposite each other, the two doors work together to open or close the retrieval opening. To ensure the airtightness when the doors are closed, existing refrigerators have a sealing strip on the side of one door closer to the other. When the two doors are closed, the sealing strip on one door seals against the sealing strip on the other, and the two sealing strips are squeezed into the gap between the two doors to effectively seal the space between the two doors and the refrigerator body, so as to prevent cold air from escaping.

[0003] In the existing refrigerator door hinge structure, when one door is opened, the sealing strips on the two doors are tightly pressed together when they are closed. This causes the opened door to pull the other door open, resulting in an increased opening area for taking out and putting in food, which increases the amount of cold air spilled out and increases power consumption. Summary of the Invention

[0004] This invention at least partially solves one of the technical problems in the related art.

[0005] Therefore, this application aims to provide a refrigerator whose hinge structure allows the door to move outward a certain distance when opened.

[0006] The refrigerator according to this application includes: The container defines a storage compartment with an access opening; Two doors are disposed opposite to each other on the housing; each door has a front wall that is away from the housing when the door is closed, and a side wall that is connected to the front wall and away from the other door. A side sealing strip is provided on the side of the door body away from the door side wall; when both doors are closed, the side sealing strips on the two doors cooperate with each other; A hinge assembly connecting the door and the housing to allow the door to rotate relative to the housing; the hinge assembly includes: A guide portion and a guide section are located at the end of the door body near the side wall of the door; the guide portion has a guide trajectory line parallel to the side wall of the door; the guide section is located on the side of the guide portion away from the front wall and side wall of the door, and has a curved guide trajectory line; The first hinge shaft and the second hinge shaft are fixed to the housing. During the opening process of the door from the closed state, the first hinge shaft moves linearly relative to the guide part along the guide trajectory line, and the second hinge shaft moves curvedly relative to the guide part along the guide trajectory line. The door opens the take-out port and moves outward a certain distance, while simultaneously causing the side sealing strip on it to separate from the side sealing strip on the other door. The guide trajectory line includes a first trajectory line extending along a curve toward the side wall of the door and away from the front wall of the door, and a second trajectory line connected to the end of the first trajectory line near the side wall of the door and extending along a curve toward the side wall of the door and the front wall of the door. When the door is opened to 90°, the central axis of the second hinge axis moves to the connection point of the first trajectory line and the second trajectory line.

[0007] In some embodiments of this application, when the door is opened to 90°, the central axis of the second hinge axis is located on the extension line of the guide trajectory line.

[0008] In some embodiments of this application, when the door is opened to 90°, the front wall of the door is located on the side of the box away from the interior cavity of the storage room.

[0009] In some embodiments of this application, The door has a rear wall disposed opposite to the front wall of the door; Within the projection of the plane containing the top wall of the box, the front wall of the door is taken as the X-axis, the side wall of the door is taken as the Y-axis, the X-axis and the Y-axis are perpendicular and intersect at the origin O; the direction from the front wall of the door to the rear wall of the door is taken as the positive direction of the Y-axis, and the direction from the side wall of the door to the opposite end of the door body is taken as the positive direction of the X-axis, thus forming a two-dimensional coordinate system XOY; In the XOY coordinate system, the equation of the straight line containing the guiding trajectory is: in,

[0010] The direction of the curve where the guide trajectory line is located is ; in, As x increases, First increase, then decrease; among them, The maximum value in; ; in, Any value between 16mm and 20mm It can be any value between 20mm and 24mm.

[0011] In some embodiments of this application, It can be any value between 8mm and 14mm.

[0012] In some embodiments of this application, the door has a second side edge near the first hinge axis and near the retrieval opening when the door is closed; the box has a first body sidewall and a second body sidewall disposed opposite to each other. The plane where the retrieval and placement opening is located is denoted as the second reference plane M2. The side of the first body sidewall close to the second body sidewall is provided with a first reference plane M1 that is perpendicular to the second reference plane M2, and the first reference plane M1 is the middle plane between the first body sidewall and the second body sidewall. The first reference plane M1 and the second reference plane M2 remain stationary relative to the box body during the opening process of the door body relative to the box body. The door is opened to its maximum angle G. max During the process, the second side edge first moves away from the first reference plane M1 and closer to the second reference plane M2, and then moves away from the first reference plane M1 and away from the second reference plane M2. In the projection onto the top wall of the enclosure, the door opens from the second angle G2 to the maximum angle G. max During the process, the second side edge moves along a circular arc.

[0013] In some embodiments of this application, the door has a first side edge located on the side of the second side edge near the retrieval opening when the door is closed; The door is opened to its maximum angle G. max During the process, the first side edge first moves away from the first reference plane M1 and closer to the second reference plane M2, and then moves closer to the first reference plane M1 and the second reference plane M2. In the projection of the top wall of the enclosure, the door opens from the second angle G2 to the maximum angle G. max During the process, the first side edge moves along a circular arc.

[0014] In some embodiments of this application, the door is opened from a second angle G2 to a maximum angle G. max During the process, the center of the arc-shaped trajectory formed by the first side edge is denoted as the center O of the first side edge. C1 The center of the arc-shaped trajectory formed by the second lateral edge is denoted as the center O of the second lateral edge. C2 ; In the projection of the top wall of the box onto the center O of the first side edge C1 The plane parallel to the second reference plane M2 is denoted as the first plane E1; the plane passing through the center O of the second side edge. C2The plane parallel to the second reference plane M2 is denoted as the second plane E2; wherein, the third plane E3 is located between the first plane E1 and the second plane E2, and the distance between the third plane E3 and the first plane E1 is equal to the distance between the third plane E3 and the second plane E2; Passing through the center O of the first side edge C1 The intersection point of the line perpendicular to the second plane E2 and the second plane E2 is denoted as point U; line segment O C1 Let T be the midpoint of U; Wherein, the third plane E3 and line segment O C1 U intersects at line segment O C1 The midpoint T of U.

[0015] In some embodiments of this application, the straight line containing the central axis of the first hinge axis and the central axis of the second hinge axis is denoted as the straight line PQ, and the distance between the straight line PQ and the third plane E3 is any value between 0 and 1 mm.

[0016] In some embodiments of this application, when the door is opened to the fourth angle G4, the central axis of the second hinge axis is located on the extension line of the guide trajectory line, and the second side edge is located at N4; the center of the second side edge is O. C2 The straight line containing the second side edge at position N4 is denoted as line O. C2 N4, the straight line O C2 N4 and line segment O C1 U intersects at line segment O C1 The midpoint T of U.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows: This invention proposes a refrigerator comprising a cabinet, two doors, side sealing strips, and a hinge assembly. The hinge assembly includes a guide portion on the door with a guide trajectory line parallel to the door side wall and a guide portion with a curved guide trajectory line, a first hinge shaft and a second hinge shaft fixed to the cabinet. When the door is opened, the first hinge shaft moves along the guide trajectory line, the second hinge shaft moves along the guide trajectory line, the door moves outward, and simultaneously causes its upper side sealing strip to separate from the side sealing strip on the other door. The guide trajectory line includes a first trajectory line and a second trajectory line connected together. When the door is opened to 90°, the central axis of the second hinge shaft moves to the connection point of the first trajectory line and the second trajectory line. The distance between the second hinge shaft and the front wall of the door is at its maximum. This invention effectively avoids the situation where opening one door of a side-by-side refrigerator causes the other door to open, thus increasing the opening area of ​​the refrigerator and reducing cold air leakage. Attached Figure Description

[0018] Figure 1 This is a perspective view of the refrigerator of the present invention; Figure 2 This is a top view of the refrigerator of the present invention; Figure 3 yes Figure 2 A partial structural diagram of the joint between the two doors when the door is closed; Figure 4 This is a partial structural diagram of the refrigerator hinge of the present invention; Figure 5 This is a schematic diagram of the second hinge component of the refrigerator door body of the present invention in the xoy coordinate system; Figure 6 This is a view of the hinge when the door is in the closed state in Embodiment 1 of the refrigerator of the present invention; Figure 7 This is a view of the hinge when the door of the refrigerator in Embodiment 1 of the present invention is opened to φ=G1; Figure 8 This is a view of the hinge when the door of the refrigerator in Embodiment 1 of the present invention is opened to φ=G2; Figure 9 This is a view of the hinge when the door of the refrigerator in Embodiment 1 of the present invention is opened to φ=G3; Figure 10 This is a view of the hinge when the door of the refrigerator in Embodiment 1 of the present invention is opened to φ=G4; Figure 11 This is a view of the hinge when the door of the refrigerator in Embodiment 1 of the present invention is opened to φ=G5; Figure 12 In the refrigerator embodiment of the present invention, the door is opened to φ=G. max View at the hinge; Figure 13 This is a schematic diagram showing the movement of the first side edge, the second side edge, and the side sealing edge during the opening process of the refrigerator in Embodiment 1 of the present invention; Figure 14 This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion when the door is opened to φ=G1 in Embodiment 1 of the refrigerator of the present invention. Figure 15 This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion when the door is opened to φ=G2 in Embodiment 1 of the refrigerator of the present invention. Figure 16 This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion when the door is opened to φ=G3 in Embodiment 1 of the refrigerator of the present invention. Figure 17 This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion when the door is opened to φ=G4 in Embodiment 1 of the refrigerator of the present invention. Figure 18This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion when the door is opened to φ=G5 in Embodiment 1 of the refrigerator of the present invention. Figure 19 In the refrigerator embodiment of the present invention, the door is opened to φ=G. max A schematic diagram showing the positions of the first hinge axis relative to the guide part and the second hinge axis relative to the guide part; Figure 20 This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion when the door is opened to different angles in Embodiment 1 of the refrigerator of the present invention. Figure 21 This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion when the door is opened to φ=G2 and φ=G` in Embodiment 1 of the refrigerator of the present invention. Figure 22 This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion when the door is opened to φ=G2 and φ=G4 in Embodiment 1 of the refrigerator of the present invention. Figure 23 This is a simplified schematic diagram illustrating the relative positions of the door and the refrigerator body when the door is closed, according to Embodiment 1 of the present invention. Figure 24 This is a simplified schematic diagram of the relative position of the door and the refrigerator body when the door opening angle is less than 90° in Embodiment 1 of the present invention; Figure 25 This is a simplified schematic diagram of the relative position of the door and the refrigerator body when the door opening angle is 90° in Embodiment 1 of the present invention; Figure 26 This is a simplified schematic diagram of the relative position of the door and the refrigerator body when the door opening angle is greater than 90° and less than G5 in Embodiment 1 of the present invention; Figure 27 In the refrigerator embodiment of the present invention, the door opening angle is greater than G5 and less than G. max A simplified diagram illustrating the relative positions of the door and the housing. Figure 28 This is a schematic diagram showing the interaction of the side sealing strips on the two doors when the refrigerator door is closed, according to Embodiment 1 of the present invention. Figure 29 This is a schematic diagram showing the relative positions of the side sealing strips on the two doors when the refrigerator door is opened in Embodiment 1 of the present invention; Figure 30 This is a comparison diagram of the position of the refrigerator door when it is opened to G1 in Embodiment 1 of the present invention and the position of the door when it is rotated from the closed state to G1 with the center point I of its closed axis as the axis of rotation. Figure 31 This is a comparison diagram of the position of the refrigerator door when it is opened to G2 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G1 with the center point I of the axis of rotation as the axis of rotation to G2; Figure 32 This is a comparison diagram of the position of the refrigerator door when it is opened to G3 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G2 with the center point I of the axis of rotation as the axis of rotation to G3; Figure 33 This is a comparison diagram of the position of the refrigerator door when it is opened to G4 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G3 with the center point I of the axis of rotation as the axis of rotation to G4; Figure 34 This is a comparison diagram of the position of the refrigerator door when it is opened to G5 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G4 with the center point I of the axis of rotation as the axis of rotation to G5. Figure 35 In the refrigerator embodiment of the present invention, the door is opened to G. max The position of the door when it is in the open state (G5) is relative to the rotation of the door from point I, the center point of the door when it is in the open state (G5), to point G. max Position comparison chart at different times; Figure 36 This is a schematic diagram illustrating the movement of the roller along the convex curve in Embodiment 7 of the refrigerator of the present invention. Figure 37 This is a schematic diagram showing the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the opening process of the refrigerator in Embodiment 2 of the present invention; Figure 38 This is a partial structural diagram of the area near the hinge of the refrigerator when the door is closed in Embodiment 2 of the present invention. Figure 39 This is a comparison diagram of the position of the refrigerator door when it is opened to G1 in Embodiment 2 of the present invention and the position of the door when it is rotated from the closed state to G1 with the center point I of its closed axis as the axis of rotation. Figure 40 This is a comparison diagram of the position of the refrigerator door when it is opened to G2 in Embodiment 2 of the present invention and the position of the door when it is rotated from the open state to G1 with the center point I of the axis of rotation as the axis of rotation to G2; Figure 41 This is a comparison diagram of the position of the refrigerator door when it is opened to G' in Embodiment 2 of the present invention and the position of the door when it is rotated from the open to G2 state to G' with the center point I of the axis of rotation as the axis of rotation; Figure 42 This is a comparison diagram of the position of the refrigerator door when it is opened to G3 in Embodiment 2 of the present invention and the position of the door when it is rotated from the open state to G' with the center point I of the axis of rotation as the axis of rotation; Figure 43This is a comparison diagram of the position of the refrigerator door when it is opened to G4 in Embodiment 2 of the present invention and the position of the door when it is rotated from the open state to G3 with the center point I of the axis of rotation as the axis of rotation to G4; Figure 44 This is a comparison diagram of the position of the refrigerator door when it is opened to G5` in Embodiment 2 of the present invention and the position of the door when it is rotated from the open state to G4 with the center point I of the axis of rotation as the axis of rotation to G5`. Figure 45 In the refrigerator embodiment two of the present invention, the door is opened to G. max The position of the door when it is open to state G5' is such that the door rotates from the center point I of the axis when it is open to state G5' to state G. max Position comparison chart at different times; Figure 46 This is a schematic diagram showing the movement of the first side edge, the second side edge, and the side sealing edge during the opening process of the refrigerator door in Embodiment 2 of the present invention; Figure 47 This is a schematic diagram showing the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the opening process of the refrigerator in Embodiment 3 of the present invention; Figure 48 This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion during the opening process of the refrigerator in Embodiment 4 of the present invention; Figure 49 This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion during the opening process of the refrigerator in Embodiment 5 of the present invention; Figure 50 This is a schematic diagram showing the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the opening process of the refrigerator in Embodiment 6 of the present invention.

[0019] In the above figures: Box body 10; Door body 30; Front wall of door 31; Side wall of door 32; Rear wall of door 33; First side edge W; Second side edge N; Side sealing edge F; Hinge plate 40; Connecting part 401; Extension part 402; Door seal 20; Side seal 3; First hinge axis 41; Second hinge axis 42; Guide center axis P; Guide center axis Q; First side edge center O C1 The center of the second lateral edge, O C2 ; Side sealing edge center O FReference plane M0; First reference plane M1; Second reference plane M2; Third reference plane M3; Guide section 50; Guide trajectory line S; Starting guide point P0; First guide point P1; Second guide point P2; Third guide point P3; Fourth guide point P4; Fifth guide point P5; Sixth guide point P6; Guide section 60; Guide trajectory line K; Starting guide point Q0; First guide point Q1; Second guide point Q2; Third guide point Q3; Fourth guide point Q4; Fifth guide point Q5; Sixth guide point Q6; First trajectory line K1; Second trajectory line K2. Detailed Implementation

[0020] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0021] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] The terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "third," "fourth," or "fifth" may explicitly or implicitly include one or more of that feature.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] In the following description, embodiments of this application will be described in detail with reference to the accompanying drawings. In the drawings, the side of the refrigerator facing the user when in use is defined as the front side, and the opposite side is defined as the rear side.

[0025] Example 1 Reference Figure 1The refrigerator includes a cabinet 10 having a storage compartment, a door 30 connected to the cabinet 10 for opening and closing the storage compartment, and a refrigeration unit for supplying cold air to the storage compartment. The cabinet 10 includes an inner liner defining the storage compartment, an outer shell connected to the outside of the inner liner to form the appearance of the refrigerator, and an insulation layer disposed between the inner liner and the outer shell to insulate the storage compartment.

[0026] The cabinet 10 defines multiple storage compartments. In this embodiment, the multiple storage compartments include a refrigerator compartment and a freezer compartment located below the refrigerator compartment; it should be noted that the arrangement of multiple storage compartments in the refrigerator is not limited to the example described above.

[0027] The front end of the storage compartment has an access opening for placing food into or retrieving food from the storage compartment; the cabinet 10 is provided with a rotatable door 30 to open or close the access opening of the storage compartment. Specifically, the door 30 is rotatably connected to the cabinet 10 via upper and lower hinge assemblies.

[0028] The hinge assembly includes a first hinge member and a second hinge member, which cooperate with each other and are capable of relative rotation. In this embodiment, the housing 10 includes a first side wall and a second side wall (i.e., the left side wall and the right side wall of the housing 10) disposed opposite to each other; the first hinge member is disposed on the housing 10 and close to the first side wall, and the second hinge member is disposed at the end of the door 30 close to the first hinge member. The first hinge member and the second hinge member cooperate to allow the housing 10 and the door 30 to rotate relative to each other. The door 30 has a front wall 31 that is away from the housing 10 when the door 30 is closed, a rear wall 33 that is opposite to the front wall 31, and a side wall 32 that is close to the first hinge member and connected to the front wall 31. For example, when the first hinge member is located on the right side of the housing 10, the right side of the door 30 is the side wall 32 when the door 30 is closed; when the first hinge member is located on the left side of the housing 10, the left side of the door 30 is the side wall 32 when the door 30 is closed.

[0029] The front wall 31 and side wall 32 of the door 30 intersect to form a first side edge W, and the side wall 32 intersects with the rear wall 33 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 away from the housing 10. It should be noted that when both the front wall 31 and the side wall 32 are planes, the line of intersection of the two planes is the theoretical first side edge W (similarly, the theoretical second side edge N is the line of intersection of the two planes of the side wall 32 and the rear wall 33); in actual production and processing, the intersection of the front wall 31 and the side wall 32 is rounded, thus forming a curved surface at the intersection of the front wall 31 and the side wall 32; any straight line extending along the height direction of the door 30 on the curved surface at the intersection of the front wall 31 and the side wall 32 can represent the first side edge W (the same applies to the second side edge N). In this application, for ease of description, the theoretical first side edge W and the theoretical second side edge N are used for description. Furthermore, the plane passing through the center of mass of the door 30 and parallel to the front wall 31 is denoted as the center of mass plane C; during the opening of the door 30, the center of mass plane C moves with the door 30. In this embodiment, the center of mass plane C, determined by the geometric center of the door 30 as the center of mass, is used for description.

[0030] A door seal 20 is provided on the rear wall of the door 30. When the door 30 is closed, the door seal 20 fits against the front face of the enclosure surrounding the access opening, effectively sealing the connection between the door 30 and the enclosure 10, thereby ensuring that the door 30 seals the access opening and preventing cold air from escaping. Optionally, the door seal 20 can be ring-shaped. The door seal 20 includes a side seal near the door side wall 32, and the edge of the door seal 20 (side seal) near the door side wall 32 and away from the front wall 31 is denoted as the side seal edge F.

[0031] Reference Figures 2 to 4 The first hinge component includes: a connecting portion 401 connected to the housing 10, and an extension portion 402 extending forward from the connecting portion 401 and in the shape of a horizontal plate. The connecting portion 401 can be fastened to the top wall of the housing 10 by fasteners such as screws, pins, and bolts. Specifically, for the hinge at the upper end of the door 30, the connecting portion 401 is connected to the top wall of the housing 10. For the hinge at the lower end of the door 30, the connecting portion 401 is connected to the front end face of the housing 10. A first hinge shaft 41 and a second hinge shaft 42 are formed on the extension portion 402 of the first hinge component; wherein the second hinge shaft 42 is located on the side of the first hinge shaft 41 away from the first body sidewall.

[0032] The second hinge component includes a guide portion 50 and a guide portion 60 located on the door body 30 near the end of the first hinge component; wherein, the first hinge shaft 41 is adapted to the guide portion 50, and the second hinge shaft 42 is adapted to the guide portion 60; during the rotational opening or closing of the door body 30, the first hinge shaft 41 moves relative to the guide portion 50, and the second hinge shaft 42 moves relative to the guide portion 60. In this embodiment, the first hinge shaft 41 moves linearly relative to the door body 30 under the guidance of the guide portion 50, and the second hinge shaft 42 moves curvilinearly relative to the door body 30 under the guidance of the guide portion 60.

[0033] The first hinge shaft 41 and the second hinge shaft 42 are formed on the first hinge member connected to the housing 10 to form a limiting shaft for guiding the movement of the door 30. Specifically, the first hinge shaft 41 and the second hinge shaft 42 extend in the vertical direction (the height direction of the housing 10) to fit the guide portion 50 or the guide portion 60 provided on the door 30.

[0034] In this embodiment, the following example is used: a first hinge shaft 41 and a second hinge shaft 42 are provided on the extensions 402 at both the upper and lower ends of the door body 30, and a guide portion 50 and a guide portion 60 are provided at both the upper and lower ends of the door body 30. It should be noted that the arrangement in this embodiment is not limited to being provided at both the upper and lower ends of the door body 30 simultaneously; it is arranged as needed to connect the door body 30 and the housing 10.

[0035] In this embodiment, as Figures 2-6 As shown, the plane containing the side of the box 10 near the hinge plate 40 (the first body sidewall) is defined as the reference plane M0. The side of the reference plane M0 away from the inner cavity of the storage room is called the outer side, and the opposite side near the storage room is called the inner side.

[0036] The refrigerator includes two doors 30 arranged opposite each other, which work together to open or close the access panel. Each door 30 has a side sealing strip 3 on its side away from its side wall 32. When both doors 30 are closed, the side sealing strip 3 on one door 30 seals against the side sealing strip 3 on the other door 30; that is, when both doors 30 are closed, the two side sealing strips 3 are pressed into the gap between the two doors 30 to effectively seal the space between the two doors 30 and the refrigerator body 10, preventing cold air from escaping. When the refrigerator uses traditional hinges (simple rotating hinges or hinges with double shafts and double slots for a recessed design), when one door 30 is opened, the tightly pressed side sealing strips 3 on both sides cause the other door 30 to open as well, increasing the opening area of ​​the access panel, increasing cold air leakage, increasing power consumption, and causing a higher temperature inside the storage compartment, affecting food preservation. Therefore, in this invention, the first hinge component and the second hinge component of the hinge assembly cooperate to form a track-changing mechanism, so that the opened door 30 moves outward during the opening process, thereby avoiding the other door 30 being pulled open when one door 30 is opened.

[0037] To meet the above requirements, the door 30 needs to be able to move outward during rotation, so that in a double-door refrigerator without a rotating beam (where either of the two doors 30 has a side sealing strip 3 on the side away from its side wall 32), opening one door 30 does not cause the other door 30 to open. Taking the first hinge (hinge plate 40) located on the right side of the door 30 as an example, the outside is the right side, meaning the door 30 needs to be able to move to the right when opened; taking the first hinge (hinge plate 40) located on the left side of the door 30 as an example, the outside is the left side, meaning the door 30 needs to be able to move to the left. In this embodiment, the right side wall of the cabinet 10 is the first body side wall, and the first body side wall is described using the reference plane M0.

[0038] like Figure 5 As shown, in some embodiments of this application, in the projection of the top wall of the housing 10, the straight line containing the central axis of the first hinge axis 41 and the central axis of the second hinge axis 42 is perpendicular to the side wall of the first body; that is, in the projection of the top wall of the housing 10, the straight line containing the central axis of the first hinge axis 41 and the central axis of the second hinge axis 42 is parallel to the plane containing the loading and unloading port.

[0039] In this embodiment, the trajectory line of the relative movement of the central axis of the first hinge shaft 41 guided by the guide part 50 is denoted as the guide trajectory line S, and the trajectory line of the relative movement of the central axis of the second hinge shaft 42 guided by the guide part 60 is denoted as the guide trajectory line K. In this embodiment, the guide trajectory line S is a straight line parallel to the door side wall 32, that is, the guide part 50 guides the first hinge shaft 41 to move, thereby causing the central axis of the first hinge shaft 41 to move along a straight line.

[0040] As one possible configuration, the guide portion 50 is configured as a guide groove, and the guide portion 60 is configured as a guide groove; wherein, the guide groove is a straight groove and is parallel to the door side wall 32; the guide groove is a curved groove; the guide groove is located on the side of the guide groove closer to the first side edge W. Specifically, the guide portion 50 has a guide trajectory line S, and the guide portion 60 has a guide trajectory line K; that is, the center trajectory line of the guide groove is denoted as the guide trajectory line S, and the center trajectory line of the guide groove is the guide trajectory line K. In this invention, the guide trajectory line S is a straight line and is parallel to the door side wall 32; the guide trajectory line K is a curve, and the guide trajectory line S is located on the side of the guide trajectory line K closer to the first side edge W. The above configuration allows the first hinge shaft 41, which cooperates with the guide portion 50, to move linearly relative to the guide portion 50, and the second hinge shaft 42, which cooperates with the guide portion 60, to move curvedly relative to the guide portion 60, effectively increasing the smoothness of the door 30's rotation and opening.

[0041] In this embodiment, along the direction from the end of the door body 30 away from the door side wall 32 towards the door side wall 32, the distance between the guide trajectory line K and the front wall 31 first increases and then decreases.

[0042] In this embodiment, as Figure 5 As shown, within the projection of the plane containing the top wall of the housing 10, the door side wall 32 is taken as the Y-axis, and the plane passing through the first side edge W and parallel to the loading / unloading opening is taken as the X-axis, i.e., the plane containing the front wall 31 is taken as the X-axis (in this embodiment, the front wall 31 and the door side wall 32 are perpendicular); wherein, the X-axis is perpendicular to the Y-axis and intersects at the origin O; the direction from the front wall 31 to the rear wall 33 is taken as the positive direction of the Y-axis, and the direction from the door side wall 32 to the opposite end of the door body 30 is taken as the positive direction of the X-axis, forming a two-dimensional coordinate system XOY. It should be noted that the two-dimensional coordinate system XOY is a two-dimensional coordinate system that is stationary relative to the door body 30.

[0043] The second hinge component with the above trajectory characteristics occupies a very small area at the end of the door body 30, and the arrangement of the guide portion 50 and the guide portion 60 is very compact. With the above trajectory line setting, the space occupied by the guide portion 50 and the guide portion 60 that guide the movement of the first hinge shaft 41 and the second hinge shaft 42 is reduced. In this invention, the first hinge shaft 41 and the second hinge shaft are adapted to each other, and the radii of the first hinge shaft 41 and the second hinge shaft 42 are any value between 3mm and 7mm. The overall area occupied by the second hinge component is in the range of (19mm~27mm)·(23mm~31mm), which can adapt to door bodies 30 with thinner thickness (thickness not greater than 35mm).

[0044] In some embodiments of this application, the guide trajectory line S has a starting guide point P0, a first guide point P1, a second guide point P2, a third guide point P3, a fourth guide point P4, a fifth guide point P5, and a sixth guide point P6 that are sequentially close to the retrieval port. In some embodiments of this application, the guide trajectory line S is parallel to the door sidewall 32, so the starting guide point P0, the first guide point P1, the second guide point P2, the third guide point P3, the fourth guide point P4, the fifth guide point P5, and the sixth guide point P6 are equidistant from the door sidewall 32. The guide trajectory line S extends from the starting guide point P0 along a straight line, passing through the first guide point P1, the second guide point P2, the third guide point P3, the fourth guide point P4, the fifth guide point P5, and ending at the sixth guide point P6. That is, in this embodiment, the starting guide point P0 and the sixth guide point P6 are the two opposite endpoints of the guide trajectory line S. Among them, the second guide point P2 is the midpoint of the guide trajectory line S, that is, the distance |P0P2| between the initial guide point P0 and the second guide point P2 is equal to the distance |P6P2| between the sixth guide point P6 and the second guide point P2.

[0045] The guide trajectory line K has a starting guide point Q0, a first guide point Q1, a second guide point Q2, a third guide point Q3, a fourth guide point Q4, a fifth guide point Q5, and a sixth guide point Q6, which are sequentially close to the sidewall of the first body. In some embodiments of this application, along the direction from the sidewall of the second body to the sidewall of the first body (along the negative X-axis), the distance between the guide trajectory line K and the pick-up / placement port first decreases and then increases; wherein, the distance between the fifth guide point Q5 and the pick-up / placement port is set to be the smallest. The guide trajectory line K extends from the starting guide point Q0 along a curve, first passing through the first guide point Q1, the second guide point Q2, the third guide point Q3, and the fourth guide point Q4, to the fifth guide point Q5, and then extends from the fifth guide point Q5 along a curve, closer to the sidewall of the first body and away from the pick-up / placement port, to the sixth guide point Q6. That is, in this embodiment, the starting guide point Q0 and the sixth guide point Q6 are the two opposite endpoints of the guide trajectory line S. That is, the coordinates of the fifth guide point Q5 in XOY are... .

[0046] Corresponding to the compact size arrangement of the aforementioned guide trajectory lines S and guide trajectory lines K, such as Figure 5 As shown, in the projection of the plane containing the top wall of the housing 10, along the X-axis, the distance between the initial guide point P0 and the initial guide point Q0 is... The distance between the initial guide point Q0 and the sixth guide point Q6 is Along the Y-axis, the distance between the fifth guide point Q5 and the initial guide point Q0 is... .

[0047] In some embodiments of this application, in the projection of the plane containing the top wall of the housing 10, the straight line containing the starting guide point P0 and the starting guide point Q0 is parallel to the front wall 31 of the door. In this embodiment, the front wall 31 of the door is perpendicular to the side wall 32 of the door, so the straight line containing the starting guide point P0 and the starting guide point Q0 is perpendicular to the side wall 32 of the door.

[0048] It should be noted that, in this embodiment, the initial guide point P0 corresponds to the position of the central axis of the first hinge axis 41 relative to the guide trajectory line S when the door 30 is closed; the sixth guide point P6 corresponds to the position of the door 30 when it is opened to the maximum angle G. max The position of the central axis of the first hinge axis 41 relative to the guide trajectory line S. The starting guide point Q0 corresponds to the position of the central axis of the second hinge axis 42 relative to the guide trajectory line K when the door 30 is closed; the sixth guide point Q6 corresponds to the position of the door 30 when it is opened to its maximum angle G. max The position of the central axis of the second hinge axis 42 relative to the guide trajectory line K.

[0049] In some embodiments of this application, in the design of the second hinge component, to avoid excessive force when closing the door 30 and causing the door 30 to move excessively towards the housing 10, an extension section is provided at the end of the guide trajectory line S or guide trajectory line K near the front wall 31 of the door to reserve space for the above situation. Similarly, to avoid opening the door 30 to its maximum angle G... max If excessive force is applied and the guide door moves excessively (due to factors such as deformation), an extension section is provided at the end of the guide trajectory line S away from the front wall 31 or at the end of the guide trajectory line K near the side wall 32 of the door to reserve space for the above situation. When reserving space at at least one of the two ends of the guide part 50 or guide part 60, the starting guide point P0, the starting guide point Q0, the sixth guide point P6, and the sixth guide point Q6 are not the endpoints of their respective trajectory lines; that is, the setting of the starting guide point P0, the starting guide point Q0, the sixth guide point P6, and the sixth guide point Q6 as the endpoints of their respective trajectory lines is only one feasible method, which essentially corresponds to the position of the two hinge axes when the door 30 is closed or opened to the maximum angle, and is not limited by the endpoints of their respective trajectory lines.

[0050] In this embodiment, the second hinge shaft 42 is located on the side of the first hinge shaft 41 away from the side wall of the first body, and the guide portion 50 is located on the side of the guide portion 60 away from the first side edge W. The first hinge shaft 41 moves linearly relative to the guide portion 50, and the second hinge shaft 42 moves curvilinearly relative to the guide portion 60, so that the door body 30 can move outward (away from the side wall of the second body) a certain distance while rotating. This causes the side sealing strip 3 on the door body 30 to move outward when it is opened, so that the side sealing strip 3 on the opened door body 30 can quickly separate from the side sealing strip 3 on the other door body 30, so that the side sealing strips 3 on the two door bodies 30 do not squeeze each other, thereby avoiding mutual interference between the side sealing strips 3 installed on the two opposing door bodies 30 when the door body 30 is opened. This avoids the other door body 30 from opening when only one of the two door bodies 30 is opened, effectively preventing the opening area of ​​the access port from increasing and reducing the amount of cold air overflow. As another configuration, the door 30 moves forward (away from the housing 10) a certain distance while opening and moving outward, so as to avoid squeezing the door seal 20 when the door 30 opens, and to prevent the door 30 from interfering with the housing 10 and affecting the opening of the door 30.

[0051] Since there is a relative motion relationship between the guide portion 50 and the first hinge axis 41, and between the guide portion 60 and the second hinge axis 42, if the door 30 is opened with the guide portion 50 and the guide portion 60 as stationary reference points, it is equivalent to the first hinge axis 41 moving under the restriction of the guide portion 50, and the second hinge axis 42 moving under the restriction of the guide portion 60. For ease of description, this application uses the guide portion 50 and the guide portion 60 as stationary reference points, and describes the movement of the first hinge axis 41 and the second hinge axis 42 relative to the reference points.

[0052] In this embodiment, the central axis of the first hinge axis 41 is denoted as the guiding central axis P, and the central axis of the second hinge axis 42 is denoted as the guiding central axis Q; within the projection of the plane containing the top wall of the housing 10, line segment PQ is denoted as the axis center line segment PQ; the center of the axis center line segment PQ is denoted as the axis center point I. For example... Figures 6-22As shown, the movement of the first hinge axis 41 along the guide portion 50 is equivalent to the movement of the guide center axis P along the guide trajectory line S, and the movement of the second hinge axis 42 along the guide portion 60 is equivalent to the movement of the guide center axis Q along the guide trajectory line K. This allows the door 30 to move a certain distance outward (towards the side wall of the second body) while rotating. On the one hand, this avoids mutual interference between the side sealing strips 3 installed on the two opposing door bodies 30, reducing cold loss; on the other hand, it reduces the lateral obstruction of the access opening by the door seal 20 installed on the rear wall 33 of the door, thereby increasing the lateral dimension of the drawer installed in the storage room and increasing the space utilization of the storage room. The movement of the door body 30 relative to the cabinet 10 is equivalent to the relative movement between the two in the plane where the top wall of the cabinet 10 is located (or in the plane parallel to the top wall of the cabinet 10); that is, the movement of the door body 30 relative to the cabinet 10 can be reduced to a relative movement in a two-dimensional plane. Since the first hinge member with the first hinge axis 41 and the second hinge axis 42 is fixed on the housing 10, and the second hinge member with the guide portion 60 and the guide portion 50 is located on the door 30, in the plane where the top wall of the housing 10 is located, the movement of the first hinge member (axis segment PQ) relative to the second hinge member (guide portion 60 and guide portion 50) is equivalent to the movement of the axis segment PQ relative to the door 30, and is also equivalent to the movement of the housing 10 relative to the door 30.

[0053] In the following description of the present invention, for ease of explanation, the movement of the housing 10 relative to the door 30 is represented by the movement of the axis segment PQ relative to the second hinge member (guide portion 60 and guide portion 50) provided on the door 30 within the plane containing the top wall of the housing 10. That is, the description of relative motion in the present invention is described in terms of relative motion in a two-dimensional plane.

[0054] like Figure 6As shown, in this embodiment, when the door 30 is in the closed state, the central axis (guide central axis P) of the first hinge axis 41 is located at the starting guide point P0 of the guide trajectory line S, and the central axis (guide central axis Q) of the second hinge axis 42 is located at the starting guide point Q0 of the guide trajectory line K. That is, when the door 30 is in the closed state, the first hinge axis 41 is located at the end of the guide portion 50 away from the retrieval port, and the second hinge axis 42 is located at the end of the guide portion 60 away from the first body sidewall and the retrieval port; the second hinge axis 42 is located on the side of the first hinge axis 41 away from the first body sidewall. In some embodiments of this application, when the door 30 is closed, relative to the rear wall 33, both the first hinge axis 41 and the second hinge axis 42 are close to the front wall 31; that is, when the door 30 is closed, both the first hinge axis 41 and the second hinge axis 42 are located on the side of the centroid plane C close to the front wall 31. As a configurable method, when the door 30 is closed, the distance between the straight line P0Q0 containing the central axes of the first hinge axis 41 and the second hinge axis 42 and the front wall 31 of the door is denoted as L1, and the distance between the straight line P0Q0 containing the central axes of the first hinge axis 41 and the second hinge axis 42 and the rear wall 33 of the door is denoted as L2; ​​wherein L1:L2 is any value between 0.3 and 0.5. The hinge assembly with the above trajectory characteristics, on the one hand, makes the machining accuracy and fitting accuracy of the hinge assembly detectable, and on the other hand, by making full use of the space at the end of the door 30, enables the door 30 to open a larger range of motion under the hinge assembly configuration.

[0055] In this embodiment, as Figures 7-22 As shown, under the constraints of the guide portion 50 and the first hinge axis 41, and the guide portion 60 and the second hinge axis 42, the refrigerator can be opened to its maximum angle G. max The angle >90° will be used as an example. The door 30 opens from the closed state to its maximum angle G. max During the process, when the door 30 rotates open to a specific angle, the relative positions of the first hinge axis 41 relative to the guide part 50 and the relative positions of the second hinge axis 42 relative to the guide part 60 are as follows: In the following description, φ represents the opening angle of the door 30. When the door 30 is closed, the opening angle φ = 0°. When the door 30 is opened relative to the box 10, the opening angle φ is a positive number when the opening of the loading and unloading port is open. like Figure 6 As shown, when φ=0°, the door 30 is in the closed state; the guide center axis P is located at the starting guide point P0 of the guide trajectory line S, the guide center axis Q is located at the starting guide point Q0 of the guide trajectory line K, and the center point I of the axis is located at the starting center point I0 relative to the second hinge component.

[0056] like Figures 7-11As shown, when φ∈(0°, G5), the door 30 rotates from the closed state to G5 and opens. During the opening process, the guide center axis P moves in a straight line along the guide trajectory line S towards the rear wall 33 of the door, and the guide center axis Q moves in a curved line along the guide trajectory line K towards the side wall 31 and the rear wall 33 of the door.

[0057] As described above, when the door 30 opens at an angle φ∈(0°, G5), the movement trend within that opening angle range remains consistent; the only difference lies in the position of the central axis of the first hinge axis 41 relative to the guide trajectory line S, and the position of the central axis of the second hinge axis 42 relative to the guide trajectory line K. Thus, when the opening angle φ∈(0°, G5), any one of these opening angles can represent the relative positions of the first hinge axis 41 and the guide part 50, and the second hinge axis 42 and the guide part 60 when the door 30 is opened to the corresponding range; specifically, as shown... Figures 7-10 As shown, φ = G1, G2, G3, or G4 represents the position within this opening angle range, for comparison with when the door 30 is opened to other states; where 0° < G1 < G2 < G3 < G4 < G5. Specifically, when the door 30 is opened to G1, G2, G3, or G4, the positional relationship between the guide center axis P and the guide trajectory line S, and between the guide center axis Q and the guide trajectory line K, is as follows.

[0058] like Figure 7 and Figure 14 As shown, when φ=G1, the door 30 rotates open to G1; the guide center axis P is located at the first guide point P1 on the guide trajectory line S, and the first guide point P1 is located on the side of the starting guide point P0 near the rear wall 33 of the door; the guide center axis Q is located at the first guide point Q1 on the guide trajectory line K, and the first guide point Q1 is located on the side of the starting guide point Q0 near the side wall 32 and the rear wall 33 of the door; the center point I of the axis moves with the axis center line segment PQ to the first midpoint I1, and the first midpoint I1 is located on the side of the starting midpoint I0 near the side wall 32 and the rear wall 33 of the door. G1 can be set to any value in [15°, 19°].

[0059] like Figure 8 and Figure 15 As shown, when φ=G2, the door 30 rotates open to G2; the guide center axis P is located at the second guide point P2 (the midpoint of the guide trajectory line S), and the second guide point P2 is located on the side of the first guide point P1 near the rear wall 33 of the door; the guide center axis Q is located at the second guide point Q2 of the guide trajectory line K, and the second guide point Q2 is located on the side of the first guide point Q1 near the side wall 32 and the rear wall 33 of the door; the center point I of the axis moves with the axis line segment PQ to the second midpoint I2, and the second midpoint I2 is located on the side of the first midpoint I1 near the side wall 32 and the rear wall 33 of the door; G2 can be set to any value in [44°, 48°].

[0060] like Figure 9 and Figure 16 As shown, when φ=G3, the door 30 rotates open to G3; the guide center axis P is located at the third guide point P3 on the guide trajectory line S, and the third guide point P3 is located on the side of the second guide point P2 near the rear wall 33 of the door; the guide center axis Q is located at the third guide point Q3 on the guide trajectory line K, and the third guide point Q3 is located on the side of the second guide point Q2 near the side wall 32 and the rear wall 33 of the door; the center point I of the axis moves to the third midpoint I3 with the axis line segment PQ, and the third midpoint I3 is located on the side of the second midpoint I2 near the side wall 32 and the rear wall 33 of the door; G3 can be set to any value in [68°, 72°].

[0061] like Figure 10 and Figure 17 As shown, when φ=G4, the door 30 rotates open to G4; the guide center axis P is located at the fourth guide point P4 on the guide trajectory line S, and the fourth guide point P4 is located on the side of the third guide point Q3 near the rear wall 33 of the door; the guide center axis Q is located at the fourth guide point Q4 on the guide trajectory line K, and the fourth guide point Q4 is located on the side of the third guide point Q3 near the side wall 32 and the rear wall 33 of the door; the center point I of the axis moves with the axis line segment PQ to the fourth midpoint I4, and the fourth midpoint I4 is located on the side of the third midpoint I3 near the side wall 32 and the rear wall 33 of the door; G4 can be set to 90°. In some embodiments of this application, the straight line P4Q4 where the fourth guide point P4 and the fourth guide point Q4 are located is parallel to the side wall 32 of the door, that is, P0, P4, and Q4 are collinear, and the fourth guide point Q4 is on the extension line of the guide trajectory line S. In some embodiments of this application, the straight line P4Q4 is perpendicular to the plane containing the front wall 31 of the door, that is, the straight line P4Q4 is perpendicular to the front wall 31 of the door, and G4 = 90°. Additionally, it can be configured that the fourth guide point Q4 coincides with the fifth guide point Q5, that is, when the door 30 is opened, the distance between the guide center axis Q and the pick-up / drop-off opening is minimized when Q moves to the extension of the guide trajectory line S. That is, the coordinates of the fourth guide point Q4 in XOY are... In some other embodiments of this application, it can be set such that when the door 30 is opened to 90° (at which point the position of the guide center axis Q is not limited to the extension line of the guide trajectory line S), its distance from the pick-up / placement opening is minimized. When the door 30 is opened to 90°, it moves to the fifth guide point Q5, and the coordinates of its point on the guide trajectory line in XOY are... .

[0062] As an optional configuration, when the door 30 is opened to 90°, the front wall 31 of the door 30 is located outside the first body side wall of the box 10 to cover the bulges caused by foaming of the box.

[0063] Configurable, combined Figure 6 and Figure 10 As shown, when the door 30 is closed, the guide center axis P is located at the starting guide point P0 of the guide trajectory line S; the distance between the starting guide point P0 and the door side wall 32 is L1` (not shown in the figure); at this time, the front wall 31 of the door is parallel to the plane where the pick-up and put-out opening is located, and the door side wall 32 is flush with the reference plane M0.

[0064] When the door 30 is opened to 90°, the distance between the fourth guide point P4 and the front wall 31 is L2` (not shown in the figure); at this time, the side wall 32 of the door is parallel to the plane where the retrieval and placement opening is located, and the front wall 31 of the door is parallel to the reference plane M0. As one possible configuration, L2` > L1`, when the door 30 is opened to 90°, the front wall 31 of the door is located outside the reference plane M0 (the side wall of the first body). As another possible configuration, L2` = L1`, when the door 30 is opened to 90°, the front wall 31 of the door is flush with the reference plane M0 (the side wall of the first body).

[0065] like Figure 11 and Figure 18 As shown, when φ=G5, the door 30 rotates open to G5; the guide center axis P is located at the fifth guide point P5 on the guide trajectory line S, and the fifth guide point P5 is located on the side of the fourth guide point P4 near the rear wall 33 of the door; the guide center axis Q is located at the fifth guide point Q5 on the guide trajectory line K, and the fifth guide point Q5 is located on the side of the fourth guide point Q4 near the side wall 32 and the rear wall 33 of the door; the center point I of the axis moves with the axis line segment PQ to the fifth midpoint I5, and the fifth midpoint I5 is located on the side of the fourth midpoint I4 near the side wall 32 and the rear wall 33 of the door. G3 can be set to any value in [96°, 100°].

[0066] In the process of opening the door 30 from the closed state to G5, the first hinge shaft 41 moves along the guide part 50 in a straight line parallel to the door side wall 32 towards the rear wall 33, while the second hinge shaft 42 moves along the guide part 60 in a curved direction towards the door side wall 32 and the door rear wall 33.

[0067] like Figure 12 and Figure 19 As shown, φ∈(G5, G max At that time, door 30 was opened from G5 to G max During the opening process, the guide center axis P moves in a straight line along the guide trajectory line S toward the rear wall 33 of the door, while the guide center axis Q moves in a curved line along the guide trajectory line K toward the side wall 31 of the door and away from the rear wall 33 of the door.

[0068] The opening angle φ of the door is 30° ∈ (G5, G maxWhen the opening angle range is constant, the movement trend remains the same; the only difference is that the position of the central axis of the first hinge axis 41 relative to the guide trajectory line S is different, and the position of the central axis of the second hinge axis 42 relative to the guide trajectory line K is different. Thus, the opening angle φ∈(G5, G... max When the door 30 is opened to the corresponding section, any one of the opening angles can represent the relative positions of the first hinge axis 41 and the guide part 50, and the second hinge axis 42 and the guide part 60; specifically, for example... Figure 12 and Figure 19 As shown, with φ=G max , represents the position within the opening angle range, for comparison with when the door 30 is opened to other states.

[0069] like Figure 12 and Figure 19 As shown, φ=G max At that time, the door 30 rotates open to G. max The guide center axis P is located at the sixth guide point P6 on the guide trajectory line S. The sixth guide point P6 is located on the side of the fifth guide point P5 near the rear wall 33 of the door. The guide center axis Q is located at the sixth guide point Q6 on the guide trajectory line K. The sixth guide point Q6 is located on the side of the fifth guide point Q5 near the side wall 32 of the door and away from the rear wall 33 of the door. The center point I of the axis moves to the sixth center point I6 along the axis line segment PQ. The sixth center point I6 is located on the side of the fifth center point I5 near the side wall 32 of the door and away from the rear wall 33 of the door. G is configurable. max Any value in [118°, 125°].

[0070] Above, door 30 is opened from G5 to G max During the process, the first hinge axis 41 moves along the guide part 50 towards the rear wall 33 of the door in a straight line parallel to the side wall 32 of the door, while the second hinge axis 42 moves along the guide trajectory line K in a curved direction towards the side wall 32 of the door and away from the rear wall 33 of the door.

[0071] In some embodiments of this application, the door 30 is opened to the maximum angle G. max At this time, the first hinge shaft 41 is located at the end of the guide portion 50 away from the front wall 31; the second hinge shaft 42 is located on the side of the first hinge shaft 41 close to the side wall 32 and the rear wall 31 of the door, and is located at the end of the guide portion 60 away from the front wall 31.

[0072] In this embodiment, 0° < G1 < G2 < G3 < G4 = 90° < G5 < G max The above G1, G2, G3, G4, G5, G maxThese are sequentially denoted as the first angle, second angle, third angle, fourth angle, fifth angle, and maximum angle. It should also be noted that the above limitations on the range of each angle are merely one feasible setting method and not a definite restriction on each angle.

[0073] In some embodiments of this application, such as Figure 21 As shown, the guide trajectory line K includes a first trajectory line K1 extending from the starting guide point P0 along the curve towards the door side wall 32 and the door rear wall 33 to the fifth guide point P5, and a second trajectory line K2 extending from the fifth guide point P5 along the curve towards the door side wall 32 and away from the door rear wall 33 to the sixth guide point P6; that is, the intersection point of the first trajectory line K1 and the second trajectory line K2 is the fifth guide point P5.

[0074] The midpoint of the first trajectory line K1 is denoted as Q`. During the opening process of the door 30, when the guide center axis Q moves to Q`, the guide center axis P moves to P` of the guide trajectory line S. The midpoint of the guide center axis P and the guide center axis Q is located at I` relative to the door 30. At this time, the opening angle of the door 30 is G`.

[0075] In conjunction with the aforementioned process of opening the door 30, when the guide center axis P moves to the midpoint of the guide trajectory line S (the second guide point P2), the guide center axis moves to the second guide point Q2 on the first trajectory line K1, and the opening angle of the door 30 is G2. Where |G2-G`|∈[0°, 4°], any value. As an optional configuration, G2=G`, meaning that during the opening process of the door 30, when the guide center axis P moves to the midpoint of the guide trajectory line S, the guide center axis Q moves to the midpoint of the first trajectory line K1. The hinge assembly with the above trajectory characteristics enables a more balanced movement of the first hinge axis 41 relative to the guide part 50 and the second hinge axis 42 relative to the guide part 60, while simultaneously ensuring that the maximum opening angle of the door 30 is sufficiently large.

[0076] It should be noted that, in this invention, the midpoint of the guide trajectory line S refers to the midpoint between the position P0 of the guide center shaft P on the guide trajectory line S when the door 30 is closed and the position P6 of the guide center shaft P on the guide trajectory line S when the door 30 is opened to its maximum angle. Similarly, the midpoint of the first trajectory line K1 refers to the midpoint between the position Q0 of the guide center shaft Q on the guide trajectory line S when the door 30 is closed and the position Q5 of the guide center shaft Q on the guide trajectory line S when the door 30 is opened to G5.

[0077] In some embodiments of this application, such as Figure 22As shown, when the door 30 opens to G4, the guide center axis Q moves to the fourth guide point Q4 of the guide trajectory line K, and the guide center axis Q is located on the extension line of the guide trajectory line S; G2 / G4 can be set to any value between 0.3 and 0.6. This is to make the movement of the door 30 more balanced, while ensuring that the maximum opening angle of the door 30 is greater.

[0078] In some embodiments of this application, when the door 30 is opened to 90°, the guide center axis Q moves to the connection point of the first trajectory line K1 and the second line K2—the fifth guide point Q5. That is, the fourth guide point Q4 coincides with the fifth guide point Q5. At this time, the distance between the guide center axis Q and the rear wall 33 of the door is minimized. The above settings can effectively detect the assembly accuracy based on the special position of the door in the 90° open state after the door 30 and the housing 10 are installed together. On the other hand, they can detect the forming accuracy of the guide part 50 and the guide part 60, making the assembly forming accuracy detectable and meeting the complex motion requirements of finely controlling the door 30 to complete rotation and outward movement. In combination with the above settings, the fifth guide point Q5 can be set to be located on the extension line of the guide trajectory line S to further improve detectability and ensure accuracy.

[0079] Based on the above scenarios where the door 30 is opened to a specific angle, in this embodiment, when the door 30 is opened to its maximum angle G... max During the opening process, the first hinge axis 41 moves continuously relative to the guide part 50, and moves in a straight line parallel to the door side wall 32 in a unidirectional direction towards the rear wall 33 of the door; the second hinge axis 42 moves continuously relative to the guide part 60, and moves in a curved direction towards the side wall of the first body. That is, throughout the entire opening process of the door 30, both the first hinge axis 41 and the second hinge axis 42 maintain unidirectional movement without reversing direction, ensuring that the force direction of the first hinge axis 41 and the second hinge axis 42 remains consistent throughout the opening process, resulting in a better feel for opening and closing the door and improving the user experience; in addition, it extends the lifespan of the guide part 50 and the guide part 60. Furthermore, throughout the entire opening process of the door 30, the first hinge axis 41 and the second hinge axis 42 maintain a unidirectional circular arc movement, ensuring that the door 30 does not experience acceleration during the entire opening process, resulting in smoother movement of the door 30.

[0080] Based on the positions of the two limiting axes (first hinge axis 41 and second hinge axis 42) relative to the limiting parts (guide part 50 and guide part 60) when the door 30 is opened to a specific angle, it can be seen that the cooperation relationship between the first hinge axis 41 and the guide part 50 is as follows: during the process of the door 30 opening from the closed state to G5, the second hinge axis 42 moves along the guide part 50 towards the door side wall 32 and the door rear wall 33; when the door 30 opens from G5 to G... maxDuring the process, the first hinge axis 41 moves along the guide portion 50 towards the side wall 32 of the door and away from the rear wall 33 of the door. Figures 6-17 See Figure 20 The relative movement of these two stages will be explained below from the perspective of the cooperation relationship between the first hinge shaft 41 and the guide portion 50, and between the second hinge shaft 42 and the guide portion 60: (1) The first stage, combined with Figures 6-11 , Figures 14-18 As shown, the process of the door 30 rotating from the closed state to G5.

[0081] In this first stage, the door 30 opens from 0° through G1, G2, G3, and G4 to G5. During this process, the guide center axis P moves in a straight line from the starting guide point P0 along the guide trajectory line S parallel to the door side wall 32 towards the rear wall 33; the guide center axis Q moves in a curved line from the starting guide point Q0 along the guide trajectory line K towards the rear wall 33 and the door side wall 32.

[0082] Specifically, the guiding center axis P moves from the starting guiding point P0 along the guiding trajectory line S, passing through the first guiding point P1, the second guiding point P2, the third guiding point P3, the fourth guiding point P4, and finally to the fifth guiding point P5; the guiding center axis Q moves from the starting guiding point Q0 along the guiding trajectory line K, passing through the first guiding point Q1, the second guiding point Q2, the third guiding point Q3, the fourth guiding point Q4, and finally to the fifth guiding point Q5.

[0083] During the first stage of opening, taking the first hinge component (guide part 50 and guide part 60) as a reference, as the door 30 opens from 0° to G5, the axis segment PQ rotates clockwise from P0Q0 and moves sequentially towards the door side wall 32 and the door rear wall 33 to P1Q1, P2Q2, P3Q3, P4Q4, and P5Q5; that is, the movement trend of the axis segment PQ is P0Q0→P1Q1→P2Q2→P3Q3→P4Q4→P5Q5. At the same time, the movement trend of the axis center point I as the axis segment PQ moves is I0→I1→I2→I3→I4→I5; that is, during the opening of the door 30, relative to the door 30, the axis center point I moves towards the door side wall 32 and the door rear wall 33.

[0084] In summary, during the process of opening the door 30 from the closed state to G5, with the door 30 (first hinge member) as the reference frame, the housing 10 relative to the door 30 has a displacement that moves towards the door side wall 32 along a direction parallel to the door rear wall 33 and a displacement that moves towards the door rear wall 33 along a direction parallel to the door side wall 32. That is, the displacement of the housing 10 relative to the door 30 can be decomposed into a displacement pointing towards the door side wall 32 along a direction parallel to the door rear wall 33 and a displacement pointing towards the door rear wall 33 along a direction parallel to the door side wall 32.

[0085] Based on the relativity of motion, taking the housing 10 as a reference frame, during the process of the door 30 opening from the closed state to G5, the door 30 has a displacement relative to the housing that moves away from its side wall 32 along a direction parallel to the rear wall 33 and a displacement that moves away from its rear wall 33 along a direction parallel to the side wall 32. That is, relative to the housing 10, the displacement of the door 30 is decomposed into a displacement moving away from the side wall 32 along a direction parallel to the rear wall 33 and a displacement moving away from the rear wall 33 along a direction parallel to the side wall 32. Among these, the displacement of the door 30 moving away from the side wall 32 along a direction parallel to the rear wall 33 relative to the housing 10 is denoted as the first direction displacement. The displacement along the direction parallel to the side wall 32 of the door and away from the rear wall 33 of the door is denoted as the second direction displacement. .

[0086] In summary, during the process of the door 30 opening from the closed state to the fifth angle G5, both the first hinge axis 41 and the second hinge axis 42 move away from the front wall 31 relative to the door 30. In some embodiments of this application, during the process of the door 30 opening from the closed state to the fifth angle G5, the distance of the first hinge axis 41 away from the front wall 31 for each unit angle the door 30 opens is denoted as ξ1, and the distance of the second hinge axis 42 away from the front wall 31 is denoted as ξ2; where ξ1 < ξ2. As an optional configuration, ξ1:ξ2∈[0.4, 0.6] for any value. The hinge assembly with the above trajectory characteristics can effectively limit the relative movement trajectory of the first hinge axis 41 and the second hinge axis 42, making the guide portion 50 and the guide portion 60 of the second hinge component more compact, and meeting the requirements of the opening angle and movement direction of the door 30.

[0087] (2) The second stage, combined with Figures 11-12 ,like Figures 18-19 As shown, door 30 is rotated open from G5 to G... max The process.

[0088] Door 30 is opened from G5 to G max During the opening process, the guide center axis P moves in a straight line from the fifth guide point P5 along the guide trajectory line S parallel to the door side wall 32 toward the direction closer to the door rear wall 33; the guide center axis Q moves in a curved line from the starting guide point Q0 along the guide trajectory line K toward the direction closer to the door side wall 32 and away from the door rear wall 33.

[0089] Specifically, the guide center axis P moves from the fifth guide point P5 along the guide trajectory line S to the sixth guide point P6; the guide center axis Q moves from the fifth guide point Q5 along the guide trajectory line K to the sixth guide point Q6.

[0090] During the second stage of opening, with the first hinge component (guide part 50 and guide part 60) as a reference, the door 30 opens from G5 to G... max During the process, the axis segment PQ rotates clockwise from P5Q5 and moves towards the side wall 32 of the door and away from the rear wall 33 of the door to P6Q6; that is, the movement trend of the axis segment PQ is P5Q5→P6Q6. At the same time, the movement trend of the central point I along with the axis segment PQ is I5→I6; that is, during the opening of the door 30, relative to the door 30, the central point I moves towards the side wall 32 of the door and away from the rear wall 33 of the door.

[0091] In summary, door 30 is opened from G5 to G max During the process, with the door body 30 (the first hinge component) as a reference, the housing 10 relative to the door body 30 has a displacement that moves towards the door side wall 32 in a direction parallel to the door rear wall 33 and a displacement that moves away from the door rear wall 33 in a direction parallel to the door side wall 32. That is, the displacement of the housing 10 relative to the door body 30 is decomposed into a displacement that points towards the door side wall 32 in a direction parallel to the door rear wall 33 and a displacement that moves away from the door rear wall 33 in a direction parallel to the door side wall 32.

[0092] Based on the relativity of motion, taking the box 10 as a reference frame, the door 30 opens from G5 to G... max During the process, the door 30 has a displacement relative to the housing 10 that moves away from the door side wall 32 along a direction parallel to the door rear wall 33 and a displacement that moves closer to the door rear wall 33 along a direction parallel to the door side wall 32; that is, relative to the housing 10, the displacement of the door 30 is decomposed into a displacement that moves away from the door side wall 32 along a direction parallel to the door rear wall 33 and a displacement that moves closer to the door rear wall 33 along a direction parallel to the door side wall 32. The displacement of the door 30 that moves away from the door side wall 32 along a direction parallel to the door rear wall 33 is denoted as the first direction displacement. The displacement along the direction parallel to the side wall 32 of the door and moving towards the rear wall 33 of the door is denoted as the second direction displacement. .

[0093] Combining the first and second stages of the movement of the door 30, relative to the housing 10, the door 30 opens from the closed state to G. max During the process, the door 30 has a first direction displacement parallel to the rear wall 33 of the door. Displacement in the second direction parallel to the door sidewall 32 During different opening stages of the door 30, the displacement in the first direction... Second direction displacement The directions may differ.

[0094] See Figures 23-27As shown; within the plane of the top wall of the housing 10, on the side of the housing 10 closest to the door 30, a displacement coordinate system AOB is established. Specifically, in the displacement coordinate system AOB, OB is perpendicular to the plane of the pick-up / placement opening, and B is located on the side of O away from the pick-up / placement opening (front side); OA is parallel to the plane of the pick-up / placement opening, and A is located on the side of O away from the side wall of the second body (outer side). That is, in the displacement coordinate system AOB, the direction from the side wall of the second body to the side wall of the first body is positive, and the direction from the pick-up / placement opening to the front wall 31 of the door 30 when it is closed (from back to front) is positive. It should be noted that during the opening of the door 30, the displacement coordinate system AOB remains stationary relative to the housing 10 and does not move with the opening of the door 30.

[0095] (1) such as Figures 6-10 As shown, during the process of the door 30 opening from the closed state to 90°, as the door 30 rotates counterclockwise relative to the housing 10, the door side wall 32, the door rear wall 33, and the door front wall 31 also rotate counterclockwise during this opening phase. In the plane of the top wall of the housing 10, the door side wall 32 extends outward and forward along the direction from the second side edge N to the first side edge W (the door rear wall 33 points to the door front wall 31); the door rear wall 33 extends inward and forward along the direction from the door side wall 32 to the end of the door 30 opposite to the door side wall 32.

[0096] During the opening process described above, the door sidewall 32 rotates counterclockwise from a state parallel to the reference plane M0. The angle between the door sidewall 32 and the plane containing the retrieval opening gradually decreases, while the angle between the door sidewall 32 and the reference plane M0 gradually increases. That is, as the door 30 opens from the closed state to 90°, relative to the housing 10, along the direction from the second side edge N to the first side edge W, the door sidewall 32 extends away from the second sidewall and the retrieval opening. At the same time, the angle between the door rear wall 33 and the plane containing the retrieval opening gradually increases, while the angle between the door rear wall 33 and the reference plane M0 gradually decreases. That is, as the door 30 opens from the closed state to 90°, relative to the housing 10, along the direction from the door sidewall 32 to the end of the door 30 opposite to the door sidewall 32, the door rear wall 33 extends away from the first sidewall and the retrieval opening.

[0097] Based on the displacement direction of the door 30 relative to the box 10 during the first stage of the door opening process, it can be concluded that during the process of the door 30 opening from the closed state to 90°, with the box 10 as the reference frame, the displacement of the door 30 in the first direction is parallel to the rear wall 33 of the door. The displacement points away from the door sidewall 32, i.e., the first direction displacement. The door 30 is displaced in a second direction parallel to the door sidewall 32, pointing towards the inner front side of the housing 10 (inward and forward side); The displacement points away from the rear wall 33 of the door, i.e., the second direction displacement. Pointing to the outer front side (outward and forward side) of the housing 10.

[0098] like Figures 23-24 As shown, in the displacement coordinate system AOB, during the process of the door 30 opening from the closed state to 90°, the first direction displacement of the door 30 is... Located in the second quadrant (A < 0, B > 0), displacement in the second direction Located in the first quadrant (A>0, B>0). Displacement in the first direction. Second direction displacement Displacement decomposition is performed on the A-axis and B-axis respectively; displacement in the first direction The displacement component on axis A is <0, the component displacement on the B-axis is >0; displacement in the second direction The displacement component on axis A is >0, the displacement component on the B-axis is >0. Among them, the trajectory feature settings of this invention include: Then there is, During the process of the door 30 opening from the closed state to 90°, in the displacement coordinate system AOB, the door 30 has a first component displacement. Therefore, it can be concluded that: relative to the box 10, the door 30 has a tendency to move along the positive direction of axis A and towards the positive direction of axis B, that is, the door 30 has a tendency to move outward and forward; that is, during the process of the door 30 opening from the closed state to 90°, the door 30 has a tendency to move outward and forward relative to the box 10.

[0099] (2) For example Figure 10 As shown, when the door 30 is opened to 90°, the door side wall 32 is parallel to the plane where the loading and unloading opening is located and perpendicular to the reference plane M0; at this time, the door rear wall 33 is parallel to the reference plane M0. That is, relative to the box body 10, along the direction from the second side edge N to the first side edge W, the door side wall extends from the inside to the outside.

[0100] Based on the displacement direction of the door 30 relative to the box 10 during the first stage of opening, it can be concluded that when the door 30 is opened to 90°, with the box 10 as the reference, the displacement of the door 30 in the first direction is parallel to the rear wall 33. The displacement points away from the door sidewall 32, i.e., the first direction displacement. The door 30 is displaced in a second direction parallel to the front of the housing 10; the door 30 is parallel to the door side wall 32. The direction of movement is 33 away from the back wall of the door, i.e., the displacement in the second direction. Pointing to the outside of housing 10.

[0101] like Figure 25As shown, in the displacement coordinate system AOB, the first direction displacement of the door body 30 is... Displacement along the B-axis in the second direction Displacement along axis A in the first direction. The displacement component on axis A is Second directional displacement The displacement component on axis A is =0, the displacement component on the B-axis is That is, when the door 30 is opened to 90°, in the displacement coordinate system AOB, the door 30 has a first component displacement. Therefore, it can be concluded that: relative to the box 10, the door 30 has an outward and forward displacement; that is, when the door 30 is opened to 90°, the door 30 has a tendency to move outward and forward relative to the box 10.

[0102] (3) such as Figures 10-12 As shown, when the door 30 is rotated open from 90° to G... max During the process, as the door 30 rotates counterclockwise relative to the housing 10, the door sidewall 32 also rotates counterclockwise during the opening process. In the plane where the top wall of the housing 10 is located, the door sidewall 32 extends outward and backward along the direction from the second side edge N to the first side edge W; the door rear wall 33 extends outward and forward along the direction from the door sidewall 32 to the end of the door 30 opposite to the door sidewall 32.

[0103] During the opening process described above, the door side wall 32 begins to rotate counterclockwise from a position perpendicular to the reference plane M0. The angle between the door side wall 32 and the plane containing the retrieval opening gradually increases, while the angle between the door side wall 32 and the reference plane M0 gradually decreases. That is, as the door body 30 rotates open from 90° to G... max During the process, relative to the housing 10, along the direction from the second side edge N to the first side edge W, the door sidewall 32 extends away from the second sidewall and closer to the access opening. Simultaneously, the angle between the door rear wall 33 and the plane containing the access opening gradually decreases, while the angle between it and the reference plane M0 gradually increases; that is, as the door 30 rotates open from 90° to G... max During the process, relative to the box 10, along the direction from the door side wall 32 to the end of the door body 30 opposite to the door side wall 32, the rear wall 33 of the door extends away from the second body side wall and the loading and unloading port.

[0104] In this embodiment, G4 = 90° < G5; combined with the displacement in the first direction in the previous analysis of the first and second stages. Second direction displacement The following description describes the door 30 opening from 90° through G5 to G... max The process is analyzed in stages.

[0105] During the first stage of opening the door 30, from 90° to G5, with the box 10 as the reference, the door 30 and the rear wall 33 of the door are displaced in the first direction parallel to each other. The displacement points away from the door sidewall 32, i.e., the first direction displacement. The door 30 is displaced in a second direction parallel to the outer front side (outward and forward side) of the housing 10. The displacement points away from the rear wall 33 of the door, i.e., the second direction displacement. Pointing to the outer rear side of housing 10 (outward and rearward side).

[0106] like Figure 26 As shown, in the displacement coordinate system AOB, during the process of the door 30 opening from 90° to G5, the first direction displacement of the door 30 is... Located in the first quadrant (A>0, B>0), displacement in the second direction Located in the fourth quadrant (A > 0, B < 0). Displacement in the first direction. Second direction displacement Displacement decomposition is performed on the A-axis and B-axis respectively; displacement in the first direction The displacement component on axis A is >0, the displacement component on the B-axis is >0; displacement in the second direction The displacement component on axis A is >0, the displacement component on the B-axis is Among them, the trajectory feature settings of the present invention include: That is, in the displacement coordinate system AOB, the gate body 30 has a first component displacement. Therefore, it can be concluded that: relative to the box 10, the door 30 has a tendency to move along the positive direction of the A axis and towards the positive direction of the B axis, that is, the door 30 has a tendency to move outward and forward; that is, during the process of the door 30 opening from 90° to G5, the door 30 has a tendency to move outward and forward relative to the box 10.

[0107] In the second stage of opening door 30, it is opened from G5 to G. max During the process (90° < G5), with the box body 10 as the reference, the door body 30 and the rear wall 33 of the door are parallel to each other in the first direction of displacement. The displacement points away from the door sidewall 32, i.e., the first direction displacement. The door 30 is displaced in a second direction parallel to the outer front side (outward and forward side) of the housing 10. The direction pointing towards the back wall 33 of the door, i.e., the second direction displacement. Pointing to the inner front side (inward and forward side) of housing 10.

[0108] like Figure 27 As shown, in the displacement coordinate system AOB, the door 30 is opened from G5 to G... max During the process, the first direction displacement of the gate 30 Located in the first quadrant (A>0, B>0), displacement in the second direction Located in the second quadrant (A < 0, B > 0). Displacement in the first direction. Second direction displacement Displacement decomposition is performed on the A-axis and B-axis respectively; displacement in the first direction The displacement component on axis A is The displacement component on the B-axis is Second directional displacement The displacement component on axis A is The displacement component on the B-axis is Among them, the trajectory feature settings of the present invention include: That is, in the displacement coordinate system AOB, the door body 30 has a first component displacement. Second displacement Therefore, it can be concluded that: relative to the housing 10, the door 30 has a tendency to move along the positive direction of axis A and towards the positive direction of axis B, that is, the door 30 has a tendency to move outward and forward; that is, the door 30 opens from G5 to G... max During the process, the door 30 tends to move outward and forward relative to the box 10.

[0109] In summary, door 30 opens from the closed state to G. max Throughout the process, the door 30 tends to move outward and forward relative to the box 10.

[0110] It should be noted that this implementation only refers to some angles within the range of 0~90°, 90°, and 90°~G. max Some angles within the range are used as representatives to illustrate the overall movement trend. They can represent the movement trend within the corresponding range and illustrate that the hinge assembly with the above trajectory characteristics of the present invention can make the door 30 move outward and forward throughout the opening process.

[0111] Combination Figure 3 ,like Figures 28-29 As shown, when the door 30 is in the closed state, the side sealing strips 3 on the two opposite door 30 are in close contact; with the hinge assembly configuration in this embodiment, when the door 30 is opened, the opened door 30 causes its side sealing strip 3 to move outward, and the moving side sealing strip 3 quickly separates from the side sealing strip 3 on the other door 30 (see...). Figure 28 and Figure 29The change in the area within the dashed box effectively prevents the other door 30 from opening due to its movement, thus effectively reducing cold loss. At the same time, the refrigerator with the hinge assembly of this application keeps the door 30 moving outward during the opening process, which can effectively reduce the obstruction of the access opening by the door 30; it also effectively avoids interference between the door 30 and the cabinet 10 during the opening process.

[0112] Based on the movement of the door 30 during the opening process described above, the door 30 opens from the closed state to G. max Throughout the process, the door 30 rotates around a dynamically changing point (the movement trend of the center point I is I0→I1→I2→I3→I4→I5→I6) that moves relative to the door 30 towards the door side wall 32. Among them, the center point I moves relative to the door 30 first towards the door rear wall 33 and then away from the door rear wall 33, so that the door 30 moves outward and forward relative to the box 10 throughout the entire process.

[0113] In conjunction with the aforementioned description of the door 30 opening process, the following comparison will be made between the position of the door 30 rotating from the midpoint of the axis line segment PQ in the previous state to the position of the adjacent next state and the position of the door 30 in the aforementioned adjacent next state in this invention, so as to illustrate the movement trend of the door 30 relative to its previous state during the opening process.

[0114] Combination Figures 30-35 As shown, assuming the door 30 rotates around the axis center point I of the previous state to the position of the adjacent subsequent state (the door 30 is represented by a dashed line), during this movement, the rotation center of the door 30 remains fixed relative to the door 30; then, under this movement trend, when the door 30 opens, the position of the first side edge W relative to the hinge is located at W'; the position of the second side edge N relative to the hinge is located at N'; and the position of the side sealing edge F relative to the hinge is located at F'. Figure 30 In the diagram, the position of the door 30 indicated by the dashed line is the position reached when the door 30 rotates simply around the midpoint I of the axis segment PQ to G1; the position of the door 30 indicated by the solid line is the position reached when it is rotated open to G1 according to the configuration of this invention. Figure 31 In the diagram, the dashed line indicates the position of door 30 after it has been opened to G1 using the rotational method of this invention, and then rotated back to G2 with the central point I of door 30 in G1 (the central point I of the previous state) as the center; the solid line indicates the position of door 30 after it has been opened to G2 using the rotational method of this invention; similarly, according to 32- Figure 35 A comparative diagram of two different opening methods is provided for each opening angle.

[0115] Comparing the configuration of this invention (the door 30 rotates throughout its entire length around a point that remains dynamically changing relative to the door 30) with the method of simply rotating the door 30 around its previous axis center point I, it can be seen that: Door 30 opens from the closed state to G max During the process, in this application, the position W of the first side edge is always located on the side away from the second body sidewall and the retrieval port of W'; the position N of the second side edge is always located on the side away from the second body sidewall and the retrieval port of N'; and the position F of the side sealing edge is always located on the side away from the second body sidewall and the retrieval port of F'. That is, the door 30 is opened from the closed state to G. max During the process, the door 30 tends to move outward and forward. It should be noted that the comparison between the current position of the door 30 in this invention and the assumed position of the door 30 when it has simply rotated from the previous state around the axis center point I to the opening angle of the door 30 in this invention can represent the movement trend of the door 30 relative to the previous state during the opening process. Here, only some selected angles are used for comparison and explanation to illustrate the movement trend of the door 30 when it opens.

[0116] In some embodiments of this application, the hinge assembly having the above-mentioned trajectory characteristics is configured such that the door 30 is displaced in a second direction along the door sidewall 32 during the early stage of the opening process (0°~90°). The door is large enough to ensure that the door 30 moves outward and forward relative to the housing 10 at a high speed in the initial stage before opening, so that the final displacement of the door 30 is outward and forward with a large outward displacement. This increases the outward movement rate of the door 30 during the opening process, ensuring the outward movement rate of the door 30 in the initial stage of opening. This accelerates the outward movement rate of the side sealing strip 3 set on the door 30 being opened, thereby accelerating the separation of the two side sealing strips 3 and effectively preventing the door 30 being opened from driving the other door 30 to open.

[0117] In some embodiments of this application, the door 30 is opened from 90° to G. max During the process, the distance between the guiding center axis P and the centroid plane C in the projection of the plane containing the top wall of the box is denoted as the first distance J. The first distance J can be any value between 0 and 2 mm. That is, the door 30 opens from 90° to G... max During this phase, the guiding center axis P is always located near the centroid plane C, effectively enhancing the opening stability of the door 30; ensuring that the door 30 can maintain a stable state when opened to a large angle.

[0118] In some embodiments of this application, combined with Figures 6-13 As shown, in this embodiment, a first reference plane M1 and a second reference plane M2 are further defined. See also... Figure 13As shown, the first reference plane M1 is a plane parallel to the reference plane M0 and perpendicular to the plane containing the retrieval opening. The first reference plane M1 is the intermediate plane between the side wall of the first body and the side wall of the second body; that is, the first reference plane M1 is parallel to the side wall of the first body, and its distance from the side wall of the first body is equal to its distance from the side wall of the second body. The second reference plane M2 is the plane containing the retrieval opening of the storage compartment. The first reference plane M1 and the second reference plane M2 do not move during the opening of the door 30 relative to the box 10; they are reference planes that remain stationary relative to the box 10.

[0119] During the opening of the door 30, the first side edge W moves along with the opening of the door 30, and its trajectory is recorded as the trajectory line of the first side edge. In the projection of the top wall of the box 10, during the opening of the door 30, the first side edge W first moves away from the first reference plane M1 and closer to the second reference plane M2, and then moves closer to the first reference plane M1 and the second reference plane M2.

[0120] As a configurable method, when door 30 opens to G2, the guide center axis P moves to the midpoint of the guide trajectory line S—the second guide point P2. In the projection onto the top wall of housing 10, door 30 opens from G2 to G... max During this process, the first side edge W moves along an arc. That is, in the projection of the top wall of the box 10, the door 30 is opened from G2 to G... max During the process, the trajectory formed by the movement of the first side edge W is an arc. The hinge assembly with the above trajectory characteristics can effectively detect the assembly accuracy and processing accuracy after the door body 30 and the box body 10 are installed together, so that it can be adjusted in time to achieve high-precision matching between the first hinge component and the second hinge component on the door body 30, and meet the complex motion requirements of fine control of the door body 30 to complete the rotation and outward movement.

[0121] As a configurable method, when the distance between the first side edge W and the first reference plane M1 is at its maximum, the door 30 opens to G'', where G'' > G2. That is, the door 30 opens from G2 to G''. max During the process, the distance between the first side edge W and the first reference plane M1 first increases and then decreases.

[0122] During the opening of the door 30, the second side edge N moves along with the opening of the door 30, and its trajectory is recorded as the trajectory line of the second side edge. In the projection on the top wall of the box 10, during the opening of the door 30, the second side edge N first moves towards the first reference plane M1 and the second reference plane M2, and then moves towards the first reference plane M1 and away from the second reference plane M2.

[0123] As a configurable method, in the projection on the top wall of the enclosure 10, the door 30 is opened from G2 to G... maxDuring this process, the second side edge N moves along an arc. That is, in the projection of the top wall of the box 10, the door 30 is opened from G2 to G... max During the process, the trajectory formed by the movement of the second side edge N is an arc. Specifically, when the door 30 opens to G2, the guiding center axis P moves to the midpoint of the guiding trajectory line S—the second guiding point P2. The hinge assembly with these trajectory characteristics allows for effective detection of assembly and machining accuracy after the door 30 and housing 10 are installed together. This enables timely adjustments to achieve a high-precision fit between the first and second hinge components on the door 30, meeting the complex motion requirements of finely controlling the door 30 to rotate and move outward.

[0124] As an optional configuration, when the door 30 is opened to G1, the distance between the second side edge N and the second reference plane M2 is minimized; where G1 < G2; that is, the door 30 is opened from G2 to G... max During the process, the distance between the second side edge N and the second reference plane M2 continues to increase.

[0125] During the opening of the door 30, the side sealing edge F moves along with the door 30, and its trajectory is recorded as the side sealing edge trajectory line. In the projection onto the top wall of the cabinet 10, during the opening of the door 30, the side sealing edge F first moves towards the first reference plane M1 and the second reference plane M2, then moves towards the first reference plane M1 and away from the second reference plane M2, and then moves away from both the first and second reference planes M1 and M2. This arrangement, with the side sealing edge F moving outwards in the later stage of the door 30 opening, avoids the door 30 obstructing the access opening due to the side sealing edge F moving inwards in the early stage of the opening, thereby increasing the space utilization rate of the storage drawer in the lateral dimension of the storage compartment.

[0126] In this embodiment, the door 30 is opened to G. F At this time, the distance between the side sealing edge F and the side wall of the first body is at its maximum. In this embodiment, after the door body 30 is opened to G... F The plane of the side sealing edge F, which is parallel to the side wall of the first body, is defined as the third reference plane M3. The third reference plane M3 does not move during the opening of the door 30 relative to the box 10; it is a reference plane that remains stationary relative to the box 10. As a configurable method, G... F The value is either 90° or 100°. This limitation ensures that when the door 30 is opened to approximately 90°, the distance between the side sealing edge F and the side wall of the first body is maximized. This allows the side sealing edge F to move outward with a larger opening stroke in the later stages of the door 30's opening, thereby compensating more for the inward displacement of the side sealing edge F in the early stages of the door 30's opening and minimizing the obstruction of the access opening by the door 30.

[0127] Among them, the door 30 is opened from the closed state to the maximum angle G.max During the process, the second side edge N is located on the side of the third reference plane M3 closest to the sidewall of the first body.

[0128] As a configurable method, when the door 30 is opened to the maximum angle G max During the opening process, the door sealing edge F is located between the second side edge N and the third reference plane M3 (including on the third reference plane M3) to prevent the door 30 from opening at an excessive angle, thus avoiding the second side edge N becoming the main factor affecting the lateral dimensions of the access opening. That is, during the opening of the door 30, the second side edge N is always located outside the side sealing edge F. Specifically, when the door 30 is opened by G... F Towards the maximum angle G max During the opening process, as the opening angle of the door 30 increases, the obstruction of the access opening by the door seal 20 and the door 30 gradually decreases. Therefore, in this invention, the door 30 moves outwards throughout the entire opening process, reducing the lateral obstruction of the access opening. Furthermore, in the later stages of opening, the side sealing edge F moves towards the reference plane M0, and the second side edge N remains on the side of the side sealing edge F closest to the reference plane M0, further reducing the lateral obstruction of the access opening. This allows for an increase in the lateral dimensions of the drawers installed in the storage room, increasing the space utilization of the storage room and facilitating the user's access to items stored on the door shelves.

[0129] As one feasible approach, when the door 30 is opened to its maximum angle G max At this time, in the projection of the plane containing the top wall of the housing 10, the second side edge N is located on the side of the side sealing edge F away from the third reference plane M3, and the angle between the straight line FN containing the side sealing edge F and the second side edge N and the third reference plane M3 is a value between 0° and 8°. As an alternative configuration, in the projection of the plane containing the top wall of the housing 10, the straight line FN containing the side sealing edge F and the second side edge N is approximately parallel to the third reference plane M3; that is, when the door 30 is opened to its maximum angle G... max At this time, the angle between the straight line FN containing the side sealing edge F and the second side edge N and the third reference plane M3 is any value between 0° and 3°. The above limitation is to minimize the obstruction of the pick-up and put-out opening by the side sealing edge F, and to effectively avoid increasing the lateral obstruction of the pick-up and put-out opening by the door body 30 due to the rotation and movement of the second side edge N.

[0130] The angle between the plane containing the surface of the door seal 20 away from the door sidewall 31 and the sidewall of the first body is denoted as the first included angle λ. The door body 30 continues from 90° towards the maximum angle G. max During the opening process, the first included angle λ tends to increase; in this embodiment, during this process, the side sealing edge F first gradually approaches the third reference plane M3, and then gradually moves away from the third reference plane M3 towards the side closer to the reference plane M0.

[0131] In this embodiment, in the projection on the top wall of the housing 10, the door 30 is opened from G2 to G. max During this process, the side sealing edge F moves along an arc. That is, in the projection of the top wall of the box 10, the door 30 is opened from G2 to G... max During the process, the trajectory formed by the movement of the side sealing edge F is an arc. Specifically, when the door 30 opens to G2, the guiding center axis P moves to the midpoint of the guiding trajectory line S—the second guiding point P2. The hinge assembly with these trajectory characteristics allows for effective detection of assembly accuracy and machining precision after the door 30 and housing 10 are installed together. This enables timely adjustments to achieve high-precision matching between the first and second hinge components on the door 30, meeting the complex motion requirements of finely controlling the door 30 to rotate and move outward.

[0132] As an optional configuration, when the door 30 is opened to G`0, the distance between the side sealing edge F and the second reference plane M2 is minimized; where G`0 < G1 < G2; that is, the door 30 is opened from G2 to G... max During the process, the distance between the side sealing edge F and the second reference plane M2 continues to increase. In addition, with the above-mentioned movement trajectory of the side sealing edge F, the range of the stroke angle of the side sealing edge F approaching the second reference plane M2 is small, which effectively limits the distance of the side sealing edge F approaching the second reference plane M2 when the door 30 is opened, avoiding interference between the side sealing edge F and the box 10 and affecting the opening of the door 30.

[0133] Based on the movement of the first side edge W, the second side edge N, and the side sealing edge F, the door 30 opens from G2 to G... max During the process, the center of the arc-shaped trajectory of the first side edge W is denoted as the center O of the first side edge. C1 Its radius is denoted as the radius of the first lateral edge, R. C1 The center of the arc-shaped trajectory of the second lateral edge N is denoted as the center O of the second lateral edge. C2 Its radius is denoted as the radius of the second lateral edge, R. C2 The center of the arc-shaped trajectory of the side sealing edge F is denoted as the center O of the side sealing edge. F Its radius is denoted as the side sealing edge radius R. F .

[0134] In some embodiments of this application, R C1 <R C2 <R F As another possible configuration, in the projection onto the plane containing the top wall of the housing 10, the center O of the first side edge is... C1 Located on the side of the first hinge axis 41 closest to the reference plane M0; the center O of the second side edge C2 Located at the center O of the first side edge C1The side away from the first hinge axis 41 and the pick-up / drop-off port; the center O of the side sealing edge. F Located at the center O of the second lateral edge C2 The side furthest from the first hinge axis 41 and closer to the pick-and-place port, with the center O of the side sealing edge. F Located at the center O of the first side edge C1 The side furthest from the pick-up / drop-off port. That is, the center O of the first side edge. C1 The center of the second lateral edge, O C2 , sealing edge center O F The distances to the reference plane M0 decrease sequentially; while the center O of the first side edge... C1 , sealing edge center O F The center of the second lateral edge, O C2 The distance between the reference plane and the second reference plane M2 increases sequentially.

[0135] Specifically, the center O of the first lateral edge C1 The distance between the first reference plane M1 and the second side edge center O is denoted as H1. C2 The distance between the edge and the first reference plane M1 is denoted as H2, and the center of the sealed edge is O. F The distance between the first reference plane M1 and the first reference plane M1 is denoted as H3; where H1 < H2 < H3.

[0136] The center of the first lateral edge, O C1 The distance between the second reference plane M2 and the second lateral edge center O is denoted as Z1. C2 The distance Z2 between the second reference plane M2 and the edge center O; F The distance between the plane and the second reference plane M2 is denoted as Z3; where Z1 < Z3 < Z2.

[0137] As a configurable setting, H1-H3 can be any value between 8mm and 11mm; Z2-Z1 can be any value between 10mm and 13mm; that is, the center of the first side edge is O. C1 The center of the second lateral edge, O C2 , sealing edge center O F Concentrated within a small area, with small distances between them, hinge components with these trajectory characteristics have a more compact structure.

[0138] As one feasible approach, the straight line containing the central axes of the first hinge axis 41 and the second hinge axis 42 is denoted as the double axis PQ. Wherein, the center O of the first side edge... C1 , sealing edge center O F Located on the side of the dual-axis PQ closest to the second reference plane M2, with the center O of the second side edge. C2 Located on the side of the dual-axis PQ away from the second reference plane M2. The center O of the side sealing edge. FThe distance between the hinge and the dual axis PQ is denoted as Z`, where Z` is any value between 0 mm and 2 mm. Hinge assemblies with the above trajectory characteristics have a more compact structure.

[0139] Passing through the center O of the first lateral edge C1 The plane parallel to the second reference plane M2 is denoted as the first plane E1; the plane passing through the center O of the second side edge. C2 The plane parallel to the second reference plane M2 is denoted as the second plane E2; the third plane E3 is located between the first plane E1 and the second plane E2, and the distance between the third plane E3 and the first plane E1 is equal to the distance between the third plane E3 and the second plane E2. Within the plane containing the top wall of the housing 10, the distance between the dual axes PQ and the third plane E3 is any value between 0 and 1 mm. The hinge assembly with the above trajectory characteristics has a more compact structure.

[0140] In some embodiments of this application, the circle passing through the center O of the first side edge... C1 The intersection point of the line perpendicular to the second plane E2 and the second plane is denoted as point U. As one possible implementation, the third plane E3 intersects with line segment O. C1 The intersection of U and line segment O is the line segment O. C1 The midpoint T of U. It can be set that when the door 30 is opened to G4 (when the guide center axis Q moves to the extension of the guide trajectory line S), the radius O of the arc trajectory of the second side edge N where it is located. C2 N4 and line segment O C1 The intersection of U and line segment O is the line segment O. C1 The midpoint T of U. That is, line segment O. C1 U, Third plane E3, O C2 N4 intersects at line segment O. C1 The midpoint T of U. The hinge assembly with the above trajectory characteristics makes the settings of the present invention detectable, and can effectively detect the assembly or processing accuracy after the door 30 and the housing 10 are installed together, ensuring the accuracy requirements and meeting the complex motion requirements of finely controlling the door 30 to complete the rotation and outward movement.

[0141] It should be noted that the "circular arc" involved in this invention includes the standard circular arc in the standard mathematical definition (the part between any two points on a circle), as well as curves that deviate slightly from the standard circular arc in the standard mathematical definition due to processing errors, slight deformation or wear of the parts, or reserved gaps, or their own performance, but still have the characteristics of a circular arc (such as the deviation surrounding the circular arc).

[0142] In some embodiments of this application, the guide portion 60 defines a smooth curved groove. Correspondingly, in this embodiment, the guide trajectory line K is a smooth curve, and the curved groove wall of the formed guide groove is also a smooth curve; that is, neither the guide trajectory line K nor the curved groove wall of the formed guide groove has any sharp points, thereby enabling the second hinge shaft 42 to move smoothly and fluidly under the guidance of the guide portion 60, thus ensuring that the door 30 opens more smoothly. The guide groove defined by the guide portion 60 for guiding the movement of the second hinge shaft 42 is smooth and has no sharp points, which makes the movement of the second hinge shaft 42 relative to the trajectory groove smooth and extends the service life of the hinge shaft. Moreover, during the opening process of the door 30, the second hinge shaft 42 moves continuously and uninterruptedly relative to the guide portion 60 throughout the entire process.

[0143] In this embodiment, the movement of the second hinge shaft 42 relative to the guide portion 60 is actually the movement of the roller relative to the cam. For cam mechanisms with roller followers, the size of the roller radius often affects the shape of the actual profile curve of the cam, so the roller radius must be selected appropriately.

[0144] Where ρ: theoretical profile radius; ρ′: actual profile radius; ρ min The minimum radius of curvature of the convex portion of the theoretical profile curve (i.e., the radius of curvature of the sharpest part); r T Roller radius.

[0145] like Figure 36 As shown in a), when the theoretical profile curve of the cam is a concave curve, ρ′=ρ+r T Therefore, r T The size of is not limited by ρ, and at this time, regardless of the size of the roller radius, the working profile of the cam is always a smooth curve.

[0146] When the theoretical profile curve of the cam is a convex curve, then ρ = ρ′ - r T : (1) such as Figure 36 As shown in b), when ρ min >r T When ρ′>0, the actual contour curve is a smooth curve. (2) For example Figure 36 As shown in c), when ρ min =r T When ρ′=0, a sharp point is generated on the actual profile curve of the cam. This sharp point is very easy to wear and can easily change the motion law of the cam, so it cannot be used. (3) such as Figure 36 As shown in d), when ρ min <r T When ρ′<0, the actual contour curves will intersect, and the portion of the actual contour curve above the intersection point will be cut off during processing, thus preventing the realization of this part of the motion law.

[0147] Therefore, in order to ensure that the cam profile neither becomes sharp nor intersects at any position, the roller radius r T It must be smaller than the minimum radius of curvature ρ of the convex portion of the theoretical profile curve. min Generally, r is selected. T ≤0.8ρ min If this requirement cannot be met, the cam base circle radius should be increased and the cam profile curve redesigned.

[0148] Accordingly, in this embodiment, the guide trajectory line K corresponds to the theoretical cam profile curve of the guide portion 60. In this embodiment, the theoretical cam profile curve is an outwardly convex curve (the guide groove protrudes away from the front wall of the door); the curved groove wall of the guide portion 60 near the front wall 31 is the actual profile curve; the radius of the second hinge shaft 42 also satisfies r T The size satisfies the setting (1) (ρ) min >r T This ensures that the curved groove wall (actual contour curve) of the guide portion 60 near the front wall 31 of the door is a smooth curve, which on the one hand makes the movement of the second hinge shaft 42 smooth, and on the other hand reduces the wear of the guide portion 60. That is, the guide portion 60 is essentially set as a cam. The theoretical contour curve of the cam in this embodiment is a convex curve, which can effectively avoid the defects of easy wear caused by the concave structure. In summary, in this embodiment, the guide trajectory line K is set as a convex cam curve, and there is ρ min >r T As another feasible approach, r T ≤0.8ρ min .

[0149] In some embodiments of this application, the angle bisector of the angle formed by the front wall 31 and the side wall 32 is denoted as angle bisector V. In this embodiment, the dihedral angle formed by the plane containing the front wall 31 and the plane containing the side wall 32 is the first angle σ = 90°. During the opening process of the door 30 relative to the box 10, the angle bisector V moves with the door 30 relative to the box 10. That is, during the opening process of the door 30, the angle bisector V remains stationary relative to the door 30.

[0150] The second guide point P2 can be set to be located on the angle bisector V, that is, the midpoint between the initial guide point P0 and the sixth guide point P6 is located on the angle bisector V. This setting facilitates the inspection of whether the first hinge shaft 41 and the second hinge shaft 42 meet the processing accuracy requirements after they are formed on the door body 30. It can also detect whether the assembly is in place based on the position of the first door shaft 51 and the guide part 60 in three states: the closed state, the open state to the maximum angle state, and the state when the first hinge shaft 41 moves to the second guide point P2. This achieves high-precision matching to meet the complex motion requirements of finely controlling the door body 30 to complete rotation and outward movement.

[0151] Example 2 This second embodiment is based on the same principle as the first embodiment, but differs in that the guide trajectory line K in this second embodiment is formed by connecting an elliptical arc and a circular arc. For example... Figure 37 As shown, specifically, the elliptical arc is located on the side of the circular arc away from the door sidewall 32. The connection point between the elliptical arc and the circular arc is denoted as the first connection point Q. J When the door 30 is opened, the guide center axis Q moves to the first connection point Q of the guide trajectory line K. J At that time, the guiding central axis P moves to point P on the guiding trajectory line S. J At this point, the midpoint between the guide center axis P and the guide center axis Q is located relative to the door body 30 at point I. J The opening angle of door 30 is G. J .

[0152] In some embodiments of this application, when the door 30 is opened to 90°, the guide center axis Q moves to the connection point of the elliptical arc and the circular arc—the first connection point Q. J .

[0153] In some embodiments of this application, the connection point between the elliptical arc and the circular arc (first connection point Q) J On the extension of the guide trajectory line S.

[0154] In some embodiments of this application, the elliptical arc and the circular arc meet at the connection point (first connection point Q). J Tangent at point Q; that is, the first connection point Q. J It is the point where the elliptical arc and the circular arc are tangent to each other.

[0155] In some embodiments of this application, the ellipse containing the elliptical arc is inscribed in the circle containing the circular arc.

[0156] In some embodiments of this application, the major axis of the ellipse containing the elliptical arc is parallel to the Y-axis, and the minor axis is parallel to the X-axis.

[0157] Specifically, in the two-dimensional coordinate system XOY, which is stationary relative to the door 30 as in Example 1, the parametric equations of the elliptical arc and the circular arc are as follows: The parametric equation of the ellipse containing the elliptical arc is: In this embodiment, a1 < b1, θ1 is the eccentric angle; (x1, y1) are the coordinates of the center of the circle, and the center of the elliptical arc is denoted as O. t ; The parametric equation of the circle containing the arc is: (x2, y2) are the coordinates of the center of the circle, and the center of the arc is denoted as O. y r2 is its radius, θ2 is a parameter, which is the rotation angle, and (x, y) are the coordinates of the point through which it passes. In some embodiments of this application, the center O of the elliptical arct With the center O of the arc y They coincide; that is, x1=x2, y1=y2.

[0158] In some embodiments of this application, the guide trajectory line S is located on the major axis of the ellipse containing the elliptical arc; as an alternative configuration, the starting guide point P0 of the guide trajectory line S is parallel to the center O of the elliptical arc. t coincide.

[0159] The second hinge component, possessing the aforementioned trajectory characteristics, has a guide trajectory line S that is a straight line parallel to the Y-axis, and a guide trajectory line K formed by connecting elliptical and circular arcs, both of which are regular curves. In this embodiment, the guide part 50 guides the first hinge axis 41, and the guide part 60 guides the second hinge axis 42, increasing the smoothness and efficiency of their relative movement. Furthermore, the guide parts 50 and 60 in this invention are arranged more compactly, enabling them to be formed on a thin door body 30 to achieve precise control of the door body 30.

[0160] Combination Figures 37-38 As shown, this corresponds to the setting of each guide point on the guide trajectory line S and each guide point on the guide trajectory line K in Embodiment 1; the end of the elliptical arc away from the rear wall 33 of the door has a starting guide point Q0, and the end of the circular arc close to the side wall 32 of the door has a sixth guide point Q6.

[0161] In conjunction with Embodiment 1, this embodiment can be configured with the connection point between the elliptical arc and the circular arc—the first connection point Q. J Located on the extension of the guide trajectory line S, i.e., the first connection point Q. J It coincides with the fourth guide point Q4.

[0162] As in Embodiment 1, the straight line containing the initial guide point Q0 and the initial guide point P0 is parallel to the front wall 31 of the door, and the fifth guide point Q5 is the point closest to the guide trajectory line K and the rear wall 33 of the door; the first connection point Q can be set. J The fourth guide point Q4 and the fifth guide point Q5 coincide; that is, G J =G 4= G5. That is, the fourth guide point Q4 (the fifth guide point Q5 / the first connection point Q). J It is located on the extension of the guide trajectory line S and is the point closest to the guide trajectory line K and the rear wall 33 of the door.

[0163] During the opening process of the door 30, as in Embodiment 1, the movement of the second hinge axis 42 relative to the guide portion 60 is divided into two stages. In the first stage, during the process of the door 30 opening from the closed state to G5, the guide center axis P moves along the guide trajectory line S from the starting guide point P0 towards the side closer to the rear wall 33 of the door to the fifth guide point P5 (the fourth guide point P4 or P5). J The guide center axis Q moves along an elliptical arc from the initial guide point Q0 towards the side wall 32 and the rear wall 33 of the door to the fifth guide point Q5 (the fourth guide point Q4 or the first connection point Q). J ).

[0164] In the second stage, door 30 is opened from G5 to G max During the process, the guiding center axis P is guided along the guiding trajectory line S from the fifth guiding point P5 (the fourth guiding point P4 or P5). J The guide axis Q moves in a straight line towards the side closest to the back wall 33 of the door to the sixth guide point P6. The guide center axis Q moves along an arc with a radius of r2 from the fifth guide point Q5 (the fourth guide point Q4 or the first connection point Q). J Move towards the side wall 32 of the door and away from the back wall 33 of the door to the sixth guide point Q6.

[0165] In summary, during the entire opening process of the door 30, the second hinge axis 42 moves unidirectionally along an elliptical arc towards the door side wall 32 and the door rear wall 33 in the first stage, and then moves unidirectionally along a circular arc towards the door side wall 32 and away from the door rear wall 33 in the second stage. This embodiment ensures that the second hinge axis 42 moves along a regular elliptical or circular arc throughout the entire movement. Combined with the first hinge axis 41 moving in a straight line parallel to the door side wall 32, the door 30 opens smoothly and stably, facilitating precise control of the door 30 to perform complex movements.

[0166] like Figures 39-45 As shown, in this embodiment, when the door 30 is opened to G5', the guide center axis P moves to P5' of the guide trajectory line S, and the guide center axis Q moves to Q5' of the guide trajectory line; wherein, G5 < G5' < G max Correspondingly, the first side edge W is located at W5', the second side edge N is located at N5', and the side sealing edge F is located at F5'.

[0167] When the door 30 is opened to G`, the guide center axis Q moves to the midpoint Q` of the elliptical arc (corresponding to the midpoint of the first trajectory line K1 in Embodiment 1). At this time, the guide center axis P moves to P` of the guide trajectory line S. Correspondingly, the first side edge W is located at W``, the second side edge N is located at N``, and the side sealing edge F is located at F``.

[0168] In this embodiment, G`=G2; that is, when the door 30 is opened, when the guide center axis P moves to the midpoint of the guide trajectory line S, the guide center axis Q moves to the midpoint of the elliptical arc of the guide trajectory line K.

[0169] Combination Figures 39-45 As shown, the comparison method is the same as in Embodiment 1; where it is assumed that the door body 30 rotates around the axis center point I of the previous state to the position of the adjacent subsequent state (the door body 30 is represented by a dashed line); then under this motion trend, when the door body 30 is opened, the position of the first side edge W relative to the hinge is located at W'; the position of the second side edge N relative to the hinge is located at N'; and the position of the side sealing edge F relative to the hinge is located at F'. Figure 39 In the diagram, the position of the door 30 indicated by the dashed line is the position reached when the door 30 rotates simply around the midpoint I of the axis segment PQ to G1; the position of the door 30 indicated by the solid line is the position reached when it is rotated open to G1 according to the configuration of this invention. Figure 40 In the diagram, the dashed line indicates the position of door 30 after it has been opened to G1 using the rotational method of this invention, and then rotated back to G2 with the central point I of door 30 in G1 (the central point I of the previous state) as the center; the solid line indicates the position of door 30 after it has been opened to G2 using the rotational method of this invention; similarly, according to reason 41- Figure 45 A comparative diagram of two different opening methods is provided for each opening angle.

[0170] By comparing the arrangement of this invention with the simple rotation of the door body 30 around its central point I in its previous state, it can be seen that: Door 30 opens from the closed state to G max During the process, in this application, the position W of the first side edge is always located on the side away from the second body sidewall and the retrieval port of W'; the position N of the second side edge is always located on the side away from the second body sidewall and the retrieval port of N'; and the position F of the side sealing edge is always located on the side away from the second body sidewall and the retrieval port of F'. That is, the door 30 is opened from the closed state to G. max During the process, the door 30 tends to move outward and forward. Similar to Embodiment 1, it should be noted that the comparison between the current position of the door 30 in this invention and the assumed position of the door 30 when it is simply rotated from the previous state around the axis center point I to the opening angle of the door 30 in this invention can represent the movement trend of the door 30 relative to the previous state during the opening process. Here, only some selected angles are used for comparison and explanation to illustrate the movement trend of the door 30 when it is opened.

[0171] In this embodiment, the first hinge shaft 41 moves in an elliptical arc relative to the guide portion 60, which has a central trajectory line connected by an elliptical arc and a circular arc, and then moves in a circular arc. The second hinge shaft moves in a straight line relative to the guide portion 60, so that the door 30 moves smoothly outward during the opening process. This allows the side sealing strip 3 on the door 30 to move outward when it is opened, so that the side sealing strip 3 on the opened door 30 can quickly separate from the side sealing strip 3 on the other door 30. This prevents the side sealing strips 3 on the two doors 30 from squeezing each other, thus avoiding mutual interference between the side sealing strips 3 installed on the two opposing doors 30 when the door 30 is opened. This also prevents the other door 30 from opening when only one of the two doors 30 is opened, effectively preventing an increase in the opening area of ​​the retrieval port and reducing the amount of cold air overflow.

[0172] In this embodiment, the movement of the side sealing ridge F differs from that in Embodiment 1; combined with Figure 46 As shown, specifically, the door 30 opens from the closed state to its maximum angle G. max During the process, the side sealing edge F first moves towards the first reference plane M1 and away from the second reference plane M2, and then moves away from the first reference plane M1 and the second reference plane M2. As in Embodiment 1, the door 30 is opened to G. F At that time, the distance between the side sealing edge F and the first reference plane M1 is the smallest; after the door body 30 is opened to G F The side sealing edge F and the plane parallel to the first reference plane M1 are defined as the third reference plane M3. The third reference plane M3 remains stationary relative to the box during the opening process of the door relative to the box. In this embodiment, when the door is opened to its maximum angle G max At that time, within the projection of the plane containing the top wall of the box, the second side edge N is located on the side of the side sealing edge F that is far away from the third reference plane M3, and the angle between the side sealing edge F and the straight line FN containing the second side edge N and the third reference plane M3 is any value between 0° and 3°.

[0173] In this embodiment, during the opening of the door 30, the movement principle of the first hinge shaft 41 relative to the guide part 50 and the second hinge shaft relative to the guide part 60 is the same as in Embodiment 1, and will not be repeated here.

[0174] It should be noted that the "elliptical arc" involved in this invention includes the standard elliptical arc in the standard mathematical definition (the part between any two points on an ellipse), as well as curves that deviate slightly from the standard elliptical arc in the standard mathematical definition due to processing errors, slight deformation or wear of the parts, or reserved gaps, or their own performance, but still have the characteristics of an elliptical arc (such as the deviation surrounding the elliptical arc).

[0175] Example 3 The principle of this embodiment is the same as that of Embodiment 2. The main difference is that in this embodiment, the center O of the elliptical arc... t With the center O of the arc y Non-overlapping; such as Figure 47 As shown in the figure, in this embodiment, the connection point between the elliptical arc and the circular arc (the first connection point Q) J It is located on the side of the straight line where the guide trajectory line S is located, away from the door side wall 32.

[0176] Specifically, in this embodiment, the connection point between the elliptical arc and the circular arc is the first connection point Q. J During the opening of the door 30, the guide center axis Q moves to the first connection point Q. J At that time, the guiding central axis P moves to point P on the guiding trajectory line S. J At point I, the midpoint between guide center axis P and guide center axis Q is located relative to door body 30. J The opening angle of door 30 is G. J .

[0177] Combining Embodiment 1 and Embodiment 2, during the opening process of the door 30 in this embodiment, the movement of the first hinge axis 41 relative to the guide portion 50 and the second hinge axis 42 relative to the guide portion 60 are as follows: In the first stage (the process of the door 30 opening from the closed state to G5), it is divided into the first segment and the second segment according to the movement trajectory of the first hinge axis 41; Specifically, in the first segment, door 30 opens from the closed state to G. J During the process, the guiding center axis P moves along the guiding trajectory line S from the starting guiding point P0 towards the side closer to the rear wall 33 of the door to point P. J The guide center axis Q moves along an elliptical arc from the initial guide point Q0 towards the door side wall 32 and the door rear wall 33 to the first connection point Q. J .

[0178] The second segment, door 30, is composed of G J During the opening process to G5, the guide center axis P follows the guide trajectory line S from point P. J Move in a straight line towards the side closest to the back wall 33 of the door to the fifth guide point P5. The guide center axis Q moves along an arc of radius r2 from the first connection point Q. J Move towards the fifth guide point Q5, closer to the side wall 32 and the rear wall 33 of the door.

[0179] In this embodiment, the second stage of opening the door 30 is the same as in Embodiment 2. It should be noted that in this embodiment, during the opening process of the door 30 in the second stage, the circular motion trajectory of the second hinge axis 42 with radius r2 is concentric with the circular motion trajectory of the second hinge axis 42 with radius r2 in the second segment.

[0180] In this embodiment, the first hinge shaft 41 moves in an elliptical arc relative to the guide portion 50, which has a central trajectory line connected by an elliptical arc and a circular arc, and then moves in a circular arc. The second hinge shaft moves in a straight line relative to the guide portion 60, so that the door 30 moves smoothly outward during the opening process. This allows the side sealing strip 3 on the door 30 to move outward when it is opened, so that the side sealing strip 3 on the opened door 30 can quickly separate from the side sealing strip 3 on the other door 30. This prevents the side sealing strips 3 on the two doors 30 from squeezing each other, thus avoiding mutual interference between the side sealing strips 3 installed on the two opposing doors 30 when the door 30 is opened. This also prevents the other door 30 from opening when only one of the two doors 30 is opened, effectively preventing an increase in the opening area of ​​the retrieval port and reducing the amount of cold air overflow.

[0181] In this embodiment, during the opening of the door 30, the movement principle of the first hinge shaft 41 relative to the guide part 50 and the second hinge shaft relative to the guide part 60 is the same as in Embodiment 1, and will not be repeated here.

[0182] Example 4 This embodiment is based on the same principle as Embodiment 1, but the main difference is that in this embodiment, the guide trajectory line K is formed by connecting multiple tangential arc segments.

[0183] Specifically, such as Figure 48 As shown, in this embodiment, the guide trajectory line K includes a first trajectory arc, a second trajectory arc, and a third trajectory arc that are arc-shaped and connected tangentially in sequence. The second trajectory arc is connected to the end of the first trajectory arc near the rear wall 33 of the door, and the third trajectory arc is connected to the end of the second trajectory arc away from the first trajectory arc.

[0184] Specifically, in the two-dimensional coordinate system XOY, which is stationary relative to the door 30 as in Embodiment 1, the parametric equations of the first trajectory arc, the second trajectory arc, and the third trajectory arc are as follows: The parametric equation of the circle containing the first trajectory arc is: (A1, B1) are the coordinates of the center of the circle, denoted as the first center O1; R1 is the radius of the first circle, u1 is a parameter, and (x, y) are the coordinates of the points through which the circle passes. The standard equation of the circle containing the second trajectory arc is: (A2, B2) are the coordinates of the center of the circle, denoted as the second center O2; R2 is the radius of the second circle, u2 is a parameter, and (x, y) are the coordinates of the points through which the circle passes. The standard equation of the circle containing the third trajectory arc is: (A3, B3) are the coordinates of the center of the circle, denoted as the third center O3; R3 is the radius of the third circle, u3 is a parameter, and (x, y) are the coordinates of the points through which the circle passes.

[0185] That is, the center of the circle containing the first trajectory arc is denoted as the first center O1; the center of the circle containing the second trajectory arc is denoted as the second center O2; and the center of the circle containing the third trajectory arc is denoted as the third center O3.

[0186] In some embodiments of this application, the first center O1 is located on the side of the first trajectory arc near the door sidewall 32, the second center O2 is located on the side of the second trajectory arc near the door sidewall 32, and the third center O3 is located on the side of the third trajectory arc near the door front wall 31.

[0187] The first trajectory arc extends from one end near the front wall 31 towards the side wall 32 and the rear wall 33 of the door. The second trajectory arc extends from one end connected to the first trajectory arc towards the side wall 32 and the rear wall 33 of the door. The third trajectory arc extends from one end connected to the second trajectory arc towards the side wall 32 and the rear wall 33 of the door, and then towards the side wall 32 and away from the rear wall 33.

[0188] In some embodiments of this application, That is, the radius of the circle containing the first trajectory arc is the largest, the radius of the circle containing the second trajectory arc is the second largest, and the radius of the circle containing the third trajectory arc is the smallest, so that the guide trajectory line K can complete a large-angle rotation and open, and can move outward.

[0189] In some embodiments of this application, the central angle of the circle O1 corresponding to the first trajectory arc is denoted as the first central angle α1; the central angle of the circle O2 corresponding to the second trajectory arc is denoted as the second central angle α2; and the central angle of the circle O3 corresponding to the third trajectory arc is denoted as the third central angle α3.

[0190] As a settable setting, α1, α2, and α3 are all acute angles. These angles are settable, with 0° < α1 < α2 < α3 < 90°. Alternatively, α1 can be any value between 14° and 18°; α2 can be any value between 38° and 50°; and α3 can be any value between 30° and 65°. These settings effectively ensure that, in this embodiment, with the guide trajectory line S composed of multiple tangentially connected arcs, the maximum opening angle of the door 30 is not less than 90°, allowing the rear wall 33 of the door 30 to be displayed forward for easy access to items.

[0191] The tangent connection point between the first and second trajectory arcs is denoted as the first tangent point Q1', and the tangent connection point between the second and third trajectory arcs is denoted as the second tangent point Q2'. When the guide center axis Q moves to the first tangent point Q1', the guide center axis P moves to the guide trajectory line P1', and the opening angle of the door 30 is denoted as G1'.

[0192] In this embodiment, the second tangent point Q2' is located on the extension line of the guide trajectory line S, that is, the second tangent point Q2' coincides with the fourth guide point P4. When the guide center axis Q moves to the second tangent point Q2', the guide center axis P moves to P2' of the guide trajectory line, and the opening angle of the door 30 is denoted as G2'; where G2' = G4.

[0193] Combining Embodiment 1 and Embodiment 2, during the opening process of the door 30 in this embodiment, the movement of the first hinge axis 41 relative to the guide portion 50 and the second hinge axis 42 relative to the guide portion 60 are as follows: The first stage (the process of the door 30 opening from the closed state to G5) is divided into the first segment, the second segment, and the third segment according to the movement trajectory of the first hinge axis 41; Specifically, in the first segment, during the process of the door 30 opening from the closed state to G1', the guide center axis P moves along the guide trajectory line S from the starting guide point P0 towards the side closer to the rear wall 33 of the door to P1'. The guide center axis Q moves along the first trajectory arc from the starting guide point Q0 towards the direction closer to the side wall 32 and the rear wall 33 of the door in an arc of radius R1 to the first tangent point Q1'.

[0194] In the second segment, as the door 30 opens from G1' to G4 (G2'=G4), the guide center axis P moves along the guide trajectory line S from the first tangent point Q1' towards the side closer to the rear wall 33 to the fourth guide point P4. The guide center axis Q moves along the second trajectory arc from the first tangent point Q1' towards the direction closer to the side wall 32 and the rear wall 33 in an arc with a radius of R2 to the fourth guide point Q4 (the second tangent point Q2').

[0195] In the third segment, as the door 30 opens from G4 (G2`=G4) to G5, the guide center axis P moves along the guide trajectory line S from the fourth guide point P4 towards the side closer to the rear wall 33 of the door to the fifth guide point P5. The guide center axis Q moves along the third trajectory line from the fourth guide point Q4 (the second tangent point Q2`) towards the direction closer to the side wall 32 and the rear wall 33 of the door in an arc with a radius of R3 to the fifth guide point Q5.

[0196] In the second stage, door 30 is opened from G5 to G max During the process, the guide center axis P moves along the guide trajectory line S from the fifth guide point P5 to the side closer to the rear wall 33 of the door, in a straight line to the sixth guide point P6. The guide center axis Q continues to move along the third trajectory arc from the fifth guide point Q5 to the direction closer to the side wall 32 of the door and away from the rear wall 33, in an arc with a radius of R3, to the sixth guide point Q6.

[0197] It should be noted that, in this embodiment, during the opening process of the door 30 in the second stage, the circular arc motion trajectory of the second hinge axis 42 with a radius of R3 is concyclic with the circular arc motion trajectory of the second hinge axis 42 with a radius of R3 in the third segment (the third trajectory arc).

[0198] In some embodiments of this application, during the opening of the door 30, when the guide center axis P moves to the midpoint of the guide trajectory line S—the second guide point P2, the guide center axis Q moves to the first tangent point Q1', that is, at this time the guide center axis Q moves to the tangent connection point of the first trajectory arc and the second trajectory arc; that is, the first tangent point Q1' coincides with the second guide point Q2.

[0199] In some embodiments of this application, during the opening of the door 30, when the guide center axis P moves to the fourth guide point P4 of the guide trajectory line S, the guide center axis Q moves to the second tangent point Q2', that is, at this time the guide center axis Q moves to the tangent connection point of the second trajectory arc and the third trajectory arc; that is, the second tangent point Q2' coincides with the fourth guide point Q4, and the tangent connection point of the second trajectory arc and the third trajectory arc—the second tangent point Q2'—is on the extension line of the guide trajectory line S.

[0200] In this embodiment, the first hinge shaft 41 moves in a multi-arc motion relative to the guide portion 50, which has a central trajectory line connected by multiple arcs, while the second hinge shaft moves in a straight line relative to the guide portion 60. This allows the door 30 to move smoothly outward during opening, thereby causing the side sealing strip 3 on the door 30 to move outward when it is opened. This allows the side sealing strip 3 on the opened door 30 to quickly separate from the side sealing strip 3 on the other door 30, preventing the side sealing strips 3 on the two doors 30 from squeezing each other. This avoids interference between the side sealing strips 3 installed on the two opposing doors 30 when the door 30 is opened, thus preventing the other door 30 from opening when only one of the two doors 30 is opened. This effectively prevents the opening area of ​​the retrieval port from increasing and reduces the amount of cold air overflow.

[0201] In this embodiment, during the opening of the door 30, the movement principle of the first hinge shaft 41 relative to the guide part 50 and the second hinge shaft relative to the guide part 60 is the same as in Embodiment 1. The movement trajectory characteristics of the first side edge W, the second side edge N and the side sealing edge F are the same as in Embodiment 1, and will not be repeated here.

[0202] Example 5 The principle of this embodiment is the same as that of Embodiment 4, the main difference being that, as Figure 49 As shown, in this embodiment, the connection point between the second trajectory arc and the third trajectory arc is located on the side of the straight line containing the guide trajectory line S that is away from the door sidewall 32. That is, the second tangent point Q2' is located on the side of the straight line containing the guide trajectory line S that is away from the door sidewall 32.

[0203] In this embodiment, when the guide center axis Q moves to the second tangent point Q2', the guide center axis P moves to the guide trajectory line P2', and the opening angle of the door 30 is denoted as G2', where G4 > G2' > G1'.

[0204] In conjunction with Embodiment 4, during the opening process of the door 30 in this embodiment, the movement of the first hinge axis 41 relative to the guide portion 50 and the second hinge axis 42 relative to the guide portion 60 are as follows: Specifically, in the first segment, during the process of the door 30 opening from the closed state to G1', the guide center axis P moves along the guide trajectory line S from the starting guide point P0 towards the side closer to the rear wall 33 of the door to P1'. The guide center axis Q moves along the first trajectory arc from the starting guide point Q0 towards the direction closer to the side wall 32 and the rear wall 33 of the door in an arc of radius R1 to the first tangent point Q1'.

[0205] In the second segment, as the door 30 opens from G1' to G2', the guide center axis P moves along the guide trajectory line S from P1' towards the side closer to the rear wall 33 to P2'. The guide center axis Q moves along the second trajectory arc from the first tangent point Q1' towards the direction closer to the side wall 32 and the rear wall 33 of the door in an arc of radius R2 to the second tangent point Q2'.

[0206] In the third segment, as the door 30 opens from G2' to G5, the guide center axis P moves along the guide trajectory line S from P2' towards the side closer to the rear wall 33, passing through the fourth guide point P4 and moving to the fifth guide point P5. The guide center axis Q moves along the third trajectory arc from the second tangent point Q2' towards the direction closer to the side wall 32 and the rear wall 33 of the door, making an arc motion of radius R3, passing through the fourth guide point Q4 and moving to the fifth guide point Q5.

[0207] In the second stage, door 30 is opened from G5 to G max During the process, the guide center axis P moves along the guide trajectory line S from the fifth guide point P5 to the side closer to the rear wall 33 of the door, in a straight line to the sixth guide point P6. The guide center axis Q continues to move along the third trajectory arc from the fifth guide point Q5 to the direction closer to the side wall 32 of the door and away from the rear wall 33, in an arc with a radius of R3, to the sixth guide point Q6.

[0208] It should be noted that, in this embodiment, during the opening process of the door 30 in the second stage, the circular arc motion trajectory of the second hinge axis 42 with a radius of R3 is concyclic with the circular arc motion trajectory of the second hinge axis 42 with a radius of R3 in the third segment (the third trajectory arc).

[0209] In this embodiment, the first hinge shaft 41 moves in a multi-arc motion relative to the guide portion 50, which has a central trajectory line connected by multiple arcs, while the second hinge shaft moves in a straight line relative to the guide portion 60. This allows the door 30 to move smoothly outward during opening, thereby causing the side sealing strip 3 on the door 30 to move outward when it is opened. This allows the side sealing strip 3 on the opened door 30 to quickly separate from the side sealing strip 3 on the other door 30, preventing the side sealing strips 3 on the two doors 30 from squeezing each other. This avoids interference between the side sealing strips 3 installed on the two opposing doors 30 when the door 30 is opened, thus preventing the other door 30 from opening when only one of the two doors 30 is opened. This effectively prevents the opening area of ​​the retrieval port from increasing and reduces the amount of cold air overflow.

[0210] In this embodiment, during the opening of the door 30, the movement principle of the first hinge shaft 41 relative to the guide part 50 and the second hinge shaft relative to the guide part 60 is the same as in Embodiment 1. The movement trajectory characteristics of the first side edge W, the second side edge N and the side sealing edge F are the same as in Embodiment 1, and will not be repeated here.

[0211] Example 6 This sixth embodiment is based on the same principle as embodiments one through five, the main difference being that, Figure 50 As shown, by setting the guide trajectory line S and the guide trajectory line K, the door 30 is opened from G0' to G... max During the process, the guide center axis Q rotates simply around the guide center axis P when the door 30 is opened to G0.

[0212] As a settable setting, G0` ≥ 90°. As a settable setting, G0` = 90°; that is, as the door 30 continues to open from 90°, the guide center axis Q rotates around the guide center axis P when the door 30 is opened to G0`, so that the door 30 can open to a sufficiently large angle to facilitate the loading and unloading of items.

[0213] In this sixth embodiment, door 30 is opened from G0' to G... max The motion configuration is applicable to any of the configurations in Embodiments 1 to 6, or to the coordination configuration of at least some stages of those configurations. Examples are given below in conjunction with Embodiments 5 and 2.

[0214] like Figure 50As shown in Embodiment 5, the guide trajectory line K includes a first trajectory arc, a second trajectory arc, and a third trajectory arc that are arc-shaped and connected tangentially in sequence. The first and second trajectory arcs are configured in the same way as in Embodiment 5. In Embodiment 6, G0` = G4. The difference between Embodiment 6 and Embodiment 5 is that, within the plane of the top wall of the housing 10, the third trajectory arc is an arc with the fourth guide point P4 when the door 30 is opened to G4 as its center, and the distance between the guide center axis P and the guide center axis Q as its radius. That is, in this embodiment, the center of the third trajectory arc is on the guide trajectory line, and the radius of the third trajectory line is the distance between the guide center axis P and the guide center axis Q.

[0215] Under the above settings, within the plane of the top wall of the enclosure 10, the door 30 opens from G0' to G... max During the process, the guide center axis Q rotates simply around the fourth guide point P4 as the center of rotation.

[0216] In some embodiments of this application, in conjunction with Embodiment 2, the guide trajectory line includes a tangentially connected elliptical arc and a circular arc; wherein, the elliptical arc is set in the same manner as in Embodiment 2, and in this embodiment, G0`=G4; the difference is that the circular arc has its center at the fourth guide point P4 when the door 30 is opened to G4, and its radius is the distance between the guide center axis P and the guide center axis Q. That is, the center of the circular arc set above is on the guide trajectory line, and the radius of the circular arc is the distance between the guide center axis P and the guide center axis Q.

[0217] In this embodiment, the door 30 is capable of being opened from G0' to G... max During the process, the guide center axis Q rotates around the guide center axis P when the door 30 is opened to G0'. The hinge assembly with the above trajectory characteristics enables the door 30 to open at a sufficiently large angle, making it convenient to take out and put in items.

[0218] In this embodiment, during the process of opening the door 30 from the closed state to G0', the first hinge shaft 41 moves relative to the guide part 50, and the second hinge shaft moves linearly relative to the guide part 60, so that the door 30 moves smoothly outward during the opening process. This allows the side sealing strip 3 on the door 30 to move outward when it is opened, so that the side sealing strip 3 on the opened door 30 can quickly separate from the side sealing strip 3 on the other door 30. This prevents the side sealing strips 3 on the two doors 30 from squeezing each other, thus avoiding mutual interference between the side sealing strips 3 installed on the two opposing doors 30 when the door 30 is opened. This also prevents the other door 30 from opening when only one of the two doors 30 is opened, effectively preventing the opening area of ​​the retrieval port from increasing and reducing the amount of cold air overflow.

[0219] In the later stages of the opening of door 30 (G0' opens to G...)max During the process, the door 30 rotates around a single fixed axis so that the door 30 can open at a sufficiently large angle to facilitate the taking and putting of items.

[0220] In this embodiment, during the opening of the door 30, the movement principle of the first hinge shaft 41 relative to the guide part 50 and the second hinge shaft relative to the guide part 60 is the same as in Embodiment 1, and will not be repeated here.

[0221] In summary, Embodiments 1 to 6 of the present invention have described the solution of the present invention from multiple perspectives. It should be noted that Embodiments 2 to 6 mainly describe the differences between them and other embodiments, without describing the similarities in detail. It should be added that, as a configuration for precisely controlling the rotation and opening of the door 30 and its movement in a specific direction, the first and second hinge components need to form a structural configuration that incorporates various trajectory characteristics. This requires meticulous design to achieve coordinated operation between the first and second hinge components, ultimately achieving precise control of the door 30 to perform complex movements.

[0222] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0223] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that, include: The container defines a storage compartment with an access opening; Two doors are disposed opposite to each other on the housing; each door has a front wall that is away from the housing when the door is closed, and a side wall that is connected to the front wall and away from the other door. A side sealing strip is provided on the side of the door body away from the door side wall; when both doors are closed, the side sealing strips on the two doors cooperate with each other; A hinge assembly connecting the door and the housing to allow the door to rotate relative to the housing; the hinge assembly includes: A guide portion and a guide section are located at the end of the door body near the side wall of the door; the guide portion has a guide trajectory line parallel to the side wall of the door; the guide section is located on the side of the guide portion away from the front wall and side wall of the door, and has a curved guide trajectory line; The first hinge shaft and the second hinge shaft are fixed to the housing. During the opening process of the door from the closed state, the first hinge shaft moves linearly relative to the guide part along the guide trajectory line, and the second hinge shaft moves curvedly relative to the guide part along the guide trajectory line. The door opens the take-out port and moves outward a certain distance, while simultaneously causing the side sealing strip on it to separate from the side sealing strip on the other door. The guide trajectory line includes a first trajectory line extending along a curve toward the side wall of the door and away from the front wall of the door, and a second trajectory line connected to the end of the first trajectory line near the side wall of the door and extending along a curve toward the side wall of the door and the front wall of the door. When the door is opened to 90°, the central axis of the second hinge axis moves to the connection point of the first trajectory line and the second trajectory line; When the door is opened to 90°, the central axis of the second hinge axis is located on the extension line of the guide trajectory line; When the door is opened to 90°, the front wall of the door is located on the side of the box away from the interior cavity of the storage room; The door has a rear wall disposed opposite to the front wall of the door; Within the projection of the plane containing the top wall of the box, the front wall of the door is taken as the X-axis, the side wall of the door is taken as the Y-axis, the X-axis and the Y-axis are perpendicular and intersect at the origin O; the direction from the front wall of the door to the rear wall of the door is taken as the positive direction of the Y-axis, and the direction from the side wall of the door to the opposite end of the door body is taken as the positive direction of the X-axis, thus forming a two-dimensional coordinate system XOY; In the XOY coordinate system, the equation of the straight line containing the guiding trajectory is: ;in, The direction of the curve where the guide trajectory line is located is ; in, As x increases, First increase, then decrease; among them, The maximum value in; ; in, Any value between 16mm and 20mm Any value between 20mm and 24mm; It can be any value between 8mm and 14mm.

2. The refrigerator according to claim 1, characterized in that, The door has a second side edge near the first hinge axis and near the retrieval opening when the door is closed; the box has a first body side wall and a second body side wall disposed opposite to each other; The plane where the retrieval and placement opening is located is denoted as the second reference plane M2. The side of the first body sidewall close to the second body sidewall is provided with a first reference plane M1 that is perpendicular to the second reference plane M2, and the first reference plane M1 is the middle plane between the first body sidewall and the second body sidewall. The first reference plane M1 and the second reference plane M2 remain stationary relative to the box body during the opening process of the door body relative to the box body. The door is opened to its maximum angle G. max During the process, the second side edge first moves towards the first reference plane M1 and the second reference plane M2, and then moves towards the first reference plane M1 and away from the second reference plane M2. In the projection onto the top wall of the enclosure, the door opens from the second angle G2 to the maximum angle G. max During the process, the second side edge moves along the arc; G2∈[44°, 48°] for any value; G max Any value in [118°, 125°].

3. The refrigerator according to claim 2, characterized in that, The door has a first side edge located on the side of the second side edge near the retrieval opening when the door is closed; The door is opened to its maximum angle G. max During the process, the first side edge first moves away from the first reference plane M1 and closer to the second reference plane M2, and then moves closer to the first reference plane M1 and the second reference plane M2. In the projection of the top wall of the enclosure, the door opens from the second angle G2 to the maximum angle G. max During the process, the first side edge moves along a circular arc.

4. The refrigerator according to claim 3, characterized in that, The door is opened from the second angle G2 to the maximum angle G. max During the process, the center of the arc-shaped trajectory formed by the first side edge is denoted as the center O of the first side edge. C1 The center of the arc-shaped trajectory formed by the second lateral edge is denoted as the center O of the second lateral edge. C2 ; In the projection of the top wall of the box onto the plane, the circle passing through the center O of the first side edge. C1 The plane parallel to the second reference plane M2 is denoted as the first plane E1; the plane passing through the center O of the second side edge. C2 The plane parallel to the second reference plane M2 is denoted as the second plane E2; Wherein, the third plane E3 is located between the first plane E1 and the second plane E2, and the distance between the third plane E3 and the first plane E1 is equal to the distance between the third plane E3 and the second plane E2; Passing through the center O of the first side edge C1 The intersection point of the line perpendicular to the second plane E2 and the second plane E2 is denoted as point U; line segment O C1 Let T be the midpoint of U; Wherein, the third plane E3 and line segment O C1 U intersects at line segment O C1 The midpoint T of U.

5. The refrigerator according to claim 4, characterized in that, The straight line containing the central axis of the first hinge axis and the central axis of the second hinge axis is denoted as line PQ, and the distance between line PQ and the third plane E3 is any value between 0 and 1 mm.

6. The refrigerator according to claim 5, characterized in that, When the door is opened to 90°, the central axis of the second hinge shaft is located on the extension line of the guide trajectory line, and the second side edge is located at N4; the center of the second side edge is O. C2 The straight line containing the second side edge at position N4 is denoted as line O. C2 N4, the straight line O C2 N4 and line segment O C1 U intersects at line segment O C1 The midpoint T of U.

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