refrigerator

Abstract

The present invention provides a refrigerator, which includes a cabinet, two opposite door bodies, a side sealing strip provided on one side of the door body close to the other door body, and a hinge assembly; the hinge assembly includes a guide portion having a guide track line parallel to the door side wall and a guide portion having a curved guide track line at the end of the door body, a first hinge shaft and a second hinge shaft fixed to the cabinet; when the door body is opened from a closed state, the door body moves outward and simultaneously drives the side sealing strip on the door body to separate from the side sealing strip on the other door body; the door body has a first side edge; the door body is opened from a second angle G2 to a maximum angle G max During the process, the first side edge moves along a circular arc; when the door body is opened to the second angle G2, the central axis of the first hinge axis is located at the midpoint of the guide trajectory line; the present invention effectively avoids the increase in the opening area of ​​the refrigerator due to the opening of one door body of the double-door refrigerator driving the other door body to open, thereby reducing the overflow of cold air.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, in particular to a refrigerator. Background Art

[0002] In the related art, for a refrigerator with two door bodies arranged opposite to each other, the two door bodies arranged opposite to each other cooperate to open or close the access port; in order to ensure the sealing of the door bodies when they are closed, the existing refrigerator is provided with a sealing strip on the side of any one of the two door bodies close to the other; when the two door bodies are closed, the sealing strip on any one of the two door bodies is sealed with the sealing strip on the other, and the two sealing strips are squeezed in the gap between the two door bodies to effectively seal the space between the two door bodies and the box body to prevent cold air from overflowing.

[0003] In the hinge structure of existing refrigerator doors, when one door is opened, the sealing strips on the two doors are tightly squeezed when closed. As a result, the opened door will drive the other door to open, resulting in an increase in the opening area of ​​the access port, increasing the amount of cold overflow and increasing power consumption. Summary of the Invention

[0004] The present invention solves one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the present 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 the present application comprises:

[0007] a box body defining a storage chamber having an access opening;

[0008] Two door bodies are arranged on the box body opposite to each other; the door bodies have a door front wall away from the box body when the door body is closed, and a door side wall connected to the door front wall and away from the other door body;

[0009] A side sealing strip is provided on a side of the door body away from the door side wall; when the two door bodies are closed, the side sealing strips on the two door bodies cooperate;

[0010] A hinge assembly connecting the door body and the box body so that the door body can rotate relative to the box body; the hinge assembly includes:

[0011] The guide portion and the guide part are located at the end of the door body close to the door side wall; the guide portion has a guide track line parallel to the door side wall; the guide part is located on the side of the guide portion away from the door front wall and the door side wall, and has a curved guide track line;

[0012] The first hinge shaft and the second hinge shaft are fixed to the box body; when the door body is opened from a closed state, the first hinge shaft moves linearly relative to the guide portion along the guide trajectory, and the second hinge shaft moves curved relative to the guide portion along the guide trajectory, so that the door body opens the access opening and moves outward a certain distance, while driving the side sealing strip thereon to separate from the side sealing strip on the other door body;

[0013] The door body has a first side edge away from the access opening when the door body is closed; in the projection of the top wall of the box body, the door body is opened from the second angle G2 to the maximum angle G max During the process, the first side edge moves along the arc;

[0014] When the door body is opened to the second angle G2, the central axis of the first hinge axis is located at the midpoint of the guide trajectory line.

[0015] In some embodiments of the present application, the box body has a first side wall and a second side wall arranged opposite to each other; the plane where the access opening is located is recorded as a second reference plane M2; a first reference plane M1 perpendicular to the second reference plane M2 is provided on a side of the first side wall close to the second side wall, and the first reference plane M1 is a mid-plane between the first side wall and the second side wall; the first reference plane M1 and the second reference plane M2 remain stationary relative to the box body during the process of opening the door relative to the box body;

[0016] The door body opens to the maximum angle G max During the process, the first side edge first moves away from the first reference plane M1 and close to the second reference plane M2, and then moves close to the first reference plane M1 and the second reference plane M2;

[0017] The door body opens from the second angle G2 to the maximum angle G max During the process, the distance between the first side edge and the first reference plane M1 first increases and then decreases.

[0018] In some embodiments of the present application, the door body has a second side edge close to the first hinge axis and located on the side of the first side edge close to the access opening when the door body is closed;

[0019] The door body opens to the maximum angle G max During the process, the second side edge first moves toward the direction close to the first reference plane M1 and the second reference plane M2, and then moves toward the direction close to the first reference plane M1 and away from the second reference plane M2;

[0020] Among them, in the projection of the top wall of the box body, the door body is opened from the second angle G2 to the maximum angle G max During the process, the second side edge moves along a circular arc.

[0021] In some embodiments of the present application, in the projection of the top wall of the box, the door body is opened from the second angle G2 to the maximum angle G max During the process, the distance between the second side edge and the second reference plane M2 keeps increasing.

[0022] In some embodiments of the present application, the angle bisector of the angle formed by the door front wall and the door side wall is recorded as the angle bisector plane V; during the opening process of the door body relative to the box body, the angle bisector plane V remains stationary relative to the door body;

[0023] The midpoint of the guide trajectory is located on the angle bisector plane V.

[0024] In some embodiments of the present application, the door body is opened from the second angle G2 to the maximum angle G max In the process, the center of the arc-shaped motion trajectory formed by the first side edge is recorded as the center of the first side edge O C1 The center of the arc-shaped motion trajectory formed by the second side edge is recorded as the center of the second side edge O C2 ;

[0025] In the projection on the plane where the top wall of the box is located, the first side edge center O C1 The plane parallel to the second reference plane M2 is recorded as the first plane E1; passing through the center of the second side edge O C2 A plane parallel to the second reference plane M2 is recorded 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;

[0026] A straight line where the central axis of the first hinge axis and the central axis of the second hinge axis lie is denoted as a straight line PQ, and a distance between the straight line PQ and the third plane E3 is any value between 0 and 1 mm.

[0027] In some embodiments of the present application, when the door body is opened to a fourth angle G4, the central axis of the second hinge axis is located on an extension line of the guide trajectory line, and the second side edge is located at N4;

[0028] Passing through the center O of the first side edge C1 The intersection of the straight line perpendicular to the second plane E2 and the second plane E2 is marked as point U; the line segment O C1 The midpoint of U is denoted as T;

[0029] Among them, the center of the second side edge O C2 The straight line with the position N4 of the second side edge is recorded as straight line O C2 N4, the straight line O C2 N4 and line segment O C1 U intersects line segment O C1 The midpoint T of U.

[0030] In some embodiments of the present application, the third plane E3 and the line segment O C1 U intersects line segment O C1 The midpoint T of U.

[0031] In some embodiments of the present application, when the door body is opened to 90°, the central axis of the second hinge axis is located on the extension line of the guide trajectory line.

[0032] In some embodiments of the present application, the door body has a door rear wall arranged opposite to the door front wall;

[0033] In the projection of the plane where the top wall of the box body is located, the front wall of the door is the X-axis, the side wall of the door is 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 the positive direction of the Y-axis, and the direction from the side wall of the door to the end of the door body opposite to the side wall of the door is the positive direction of the X-axis, forming a two-dimensional coordinate system XOY;

[0034] In the coordinate system XOY, the equation of the straight line where the guiding trajectory line is located is x=a, y∈[y1, y2]; wherein y1>0;

[0035] The direction of the curve where the guide trajectory line is located is y=f(x), x∈[x1,x2];

[0036] Among them, 0 <x1≤a<x2;f(x)> 0; as x increases, y = f(x) first increases and then decreases; where f(x1) > f(x2), f(x`) is the maximum value of y = f(x) in x∈[x1, x2]; f(x`) > y2 > y1 ≥ f(x2);

[0037] Among them, D2=x2-x1 is any value between 16mm and 20mm, and D3=f(x')-f(x2) is any value between 20mm and 24mm.

[0038] Compared with the prior art, the advantages and positive effects of the present invention are:

[0039] The present invention provides a refrigerator, which comprises a box body, two opposite door bodies, a side sealing strip arranged on one side of the door body close to the other door body, and a hinge assembly connecting the box body and the door body; the hinge assembly comprises a guide part and a guide part located at the end of the door body, a first hinge shaft and a second hinge shaft fixed to the box body; the guide part has a guide track line parallel to the side wall of the door, and the guide part has a curved guide track line; when the door body is opened from a closed state, the first hinge shaft performs a linear motion and the second hinge shaft performs a curved motion, the door body moves outward a certain distance, and at the same time drives the side sealing strip thereon to separate from the side sealing strip on the other door body; the door body has a first side edge away from the access opening when the door body is closed; the door body opens from the second angle G2 to the maximum angle G max During the process, the first side edge moves along a circular arc; when the door body is opened to the second angle G2, the central axis of the first hinge axis is located at the midpoint of the guide trajectory line; the present invention effectively avoids the increase in the opening area of ​​the refrigerator due to the opening of one door body of the double-door refrigerator driving the other door body to open, thereby reducing the overflow of cold air. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a perspective view of a refrigerator of the present invention;

[0041] Figure 2 is a top view of the refrigerator of the present invention;

[0042] Figure 3 yes Figure 2 A schematic diagram of the local structure of the fitting between the two door bodies when the door bodies are closed;

[0043] Figure 4 It is a partial structural diagram of the hinge of the refrigerator of the present invention;

[0044] Figure 5 is a schematic diagram of the second hinge of the refrigerator door of the present invention in the xoy coordinate system;

[0045] Figure 6 This is a view of the hinge of the refrigerator in the first embodiment of the present invention when the door is in a closed state;

[0046] Figure 7 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0047] Figure 8 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0048] Figure 9 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0049] Figure 10The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0050] Figure 11 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0051] Figure 12 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0052] Figure 13 Schematic diagram of the movement of the first side edge, the second side edge and the side sealing edge during the opening process of the door body of the refrigerator in the first embodiment of the present invention;

[0053] Figure 14 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0054] Figure 15 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0055] Figure 16 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0056] Figure 17 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0057] Figure 18 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0058] Figure 19 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0059] Figure 20 Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion when the door body of the refrigerator in the first embodiment of the present invention is opened to different angles;

[0060] Figure 21 The door of the refrigerator in the first embodiment of the present invention is opened to and Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0061] Figure 22 The door of the refrigerator in the first embodiment of the present invention is opened to and Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0062] Figure 23 This is a simplified diagram showing the relative positions of the door and the refrigerator body when the door is closed in the first embodiment of the present invention;

[0063] Figure 24 This is a schematic diagram showing the relative positions of the door and the refrigerator body when the door opening angle is less than 90° in the first embodiment of the present invention;

[0064] Figure 25 This is a schematic diagram showing the relative positions of the door and the refrigerator body when the door is opened at an angle of 90° in the first embodiment of the present invention;

[0065] Figure 26 1 is a schematic diagram showing the relative positions of the door and the refrigerator body when the door opening angle is greater than 90° and less than G5 in the first embodiment of the present invention;

[0066] Figure 27 The door opening angle of the refrigerator in the first embodiment of the present invention is greater than G5 and less than G max The relative position diagram of the door body and the box body;

[0067] Figure 28 Schematic diagram of the cooperation of the side sealing strips on the two doors when the doors are closed in the first embodiment of the refrigerator of the present invention;

[0068] Figure 29 Schematic diagram of the relative positions of the side sealing strips on the two door bodies when the door body is opened in the first embodiment of the refrigerator of the present invention;

[0069] Figure 30 This is a comparison diagram of the position of the door body when it is opened to G1 in the first embodiment of the refrigerator of the present invention and the position of the door body when it is rotated from the closed state to G1 with the center point I of the closed axis as the rotation axis;

[0070] Figure 31 This is a comparison diagram of the position of the door body when it is opened to G2 in the first embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G1 and rotated to G2 with the center point I of the door body when it is opened to G1 as the rotation axis;

[0071] Figure 321 is a comparison diagram of the position of the door body when it is opened to G3 in the first embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G2 and rotated to G3 with the center point I of the door body when it is opened to G2 as the rotation axis;

[0072] Figure 33 This is a comparison diagram of the position of the door body when it is opened to G4 in the first embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G3 and rotated to G4 with the center point I of the door body when it is opened to G3 as the rotation axis;

[0073] Figure 34 1 is a comparison diagram of the position of the door body when it is opened to G5 in the first embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G4 and rotated to G5 with the center point I of the door body when it is opened to G4 as the rotation axis;

[0074] Figure 35 The door of the refrigerator in the first embodiment of the present invention is opened to G max The door body rotates from the open to G5 state with the center point I of the axis when it is open to G5 as the rotation axis to G max Position comparison chart when

[0075] Figure 36 Schematic diagram of the movement of the roller along the convex curve in the seventh embodiment of the refrigerator of the present invention

[0076] Figure 37 Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the door opening process in the second embodiment of the refrigerator of the present invention;

[0077] Figure 38 This is a schematic diagram of the partial structure of the hinged refrigerator near the hinge area when the door is closed in the second embodiment of the refrigerator of the present invention;

[0078] Figure 39 This is a comparison diagram of the position of the door body when it is opened to G1 in the second embodiment of the refrigerator of the present invention and the position of the door body when it is rotated from the closed state to G1 with the center point I of the closed axis as the rotation axis;

[0079] Figure 40 This is a comparison diagram of the position of the door body when it is opened to G2 in the second embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G1 and rotated to G2 with the center point I of the door body when it is opened to G1 as the rotation axis;

[0080] Figure 41 1 is a comparison diagram of the position of the door body when it is opened to G' in the second embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G2 and rotated to G' with the center point I of the door body when it is opened to G2 as the rotation axis;

[0081] Figure 421 is a comparison diagram of the position of the door when it is opened to G3 in the second embodiment of the refrigerator of the present invention and the position of the door when it is rotated from the open state to the G' state to the G3 state with the center point I of the door when it is opened to the G' state as the rotation axis;

[0082] Figure 43 This is a comparison diagram of the position of the door body when it is opened to G4 in the second embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G3 and rotated to G4 with the center point I of the door body when it is opened to G3 as the rotation axis;

[0083] Figure 44 This is a comparison diagram of the position of the door body when it is opened to G5' in the second embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G4 and rotated to G5' with the center point I of the door body when it is opened to G4 as the rotation axis;

[0084] Figure 45 The door of the refrigerator in the second embodiment of the present invention is opened to G max The position of the door body when it is opened to G5' is the same as the position of the door body when it is opened to G5'. max Position comparison chart when

[0085] Figure 46 2 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 door of the second embodiment of the refrigerator of the present invention;

[0086] Figure 47 Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the door opening process of the refrigerator in the third embodiment of the present invention;

[0087] Figure 48 Schematic diagram of 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 door body of the fourth embodiment of the refrigerator of the present invention;

[0088] Figure 49 Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the door opening process of the fifth embodiment of the refrigerator of the present invention;

[0089] Figure 50 It is a schematic diagram of the positions of the first hinge shaft relative to the guide part and the second hinge shaft relative to the guide part during the opening process of the door body of the sixth embodiment of the refrigerator of the present invention.

[0090] In the above figures: box body 10; door body 30; door front wall 31; door side wall 32; door rear wall 33; first side edge W; second side edge N; side sealing edge F;

[0091] Hinge plate 40; connecting portion 401; extending portion 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 side edge O C2 ; Side sealing edge center O F ; Reference plane M0; First reference plane M1; Second reference plane M2; Third reference plane M3; Guide portion 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 portion 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 DESCRIPTION

[0092] The present invention is described in detail below by way of exemplary embodiments, but it should be understood that elements, structures, and features of one embodiment may be beneficially combined in other embodiments without further description.

[0093] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0094] The terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," "third," "fourth," or "fifth" may explicitly or implicitly include one or more of such features.

[0095] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0096] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. In the accompanying drawings, the side of the refrigerator facing the user when in use is defined as the front side, and the side opposite thereto is defined as the rear side.

[0097] Example 1

[0098] Reference Figure 1 The refrigerator includes a cabinet 10 having a storage compartment, a door 30 connected to the cabinet 10 to open and close the storage compartment, and a refrigeration device that supplies cold air to the storage compartment. The cabinet 10 includes an inner container defining the storage compartment, an outer shell connected to the outer side of the inner container to form the appearance of the refrigerator, and an insulating layer provided between the inner container and the outer shell to insulate the storage compartment.

[0099] The housing 10 defines a plurality of storage compartments. In this embodiment, the plurality of storage compartments include a refrigerator compartment and a freezer compartment below the refrigerator compartment. It should be noted that the arrangement of the plurality of storage compartments of the refrigerator is not limited to the above example.

[0100] The front end of the storage chamber is formed with an access opening for placing food into or taking food out of the storage chamber. A rotatable door 30 is provided on the box body 10 to open or close the access opening. Specifically, the door 30 is rotatably connected to the box body 10 via an upper hinge assembly and a lower hinge assembly.

[0101] The hinge assembly includes a first hinge member and a second hinge member, which cooperate with each other to rotate relative to each other. In this embodiment, the housing 10 includes a first side wall and a second side wall (i.e., the left and right side walls of the housing 10). The first hinge member is disposed on the housing 10 near the first side wall, and the second hinge member is disposed on the end of the door 30 near 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 includes a front wall 31 that is spaced away from the housing 10 when the door 30 is closed, a rear wall 33 that is disposed opposite the front wall 31, and a side wall 32 that is adjacent to the first hinge member and connected to the front wall 31. For example, if the first hinge member is located on the right side of the housing 10, the right side of the door 30 when closed serves as the side wall 32. If the first hinge member is located on the left side of the housing 10, the left side of the door 30 when closed serves as the side wall 32.

[0102] The front wall 31 and the side wall 32 of the door body 30 intersect to form a first side edge W, and the side wall 32 and the rear wall 33 intersect to form a second side wall N. When the door body 30 is closed, the first side edge W is located on the side of the second side edge N away from the box body 10. It should be noted that when the front wall 31 and the side wall 32 are both planes, the intersection line of the two planes is the theoretical first side edge W (similarly, the theoretical second side edge N is the intersection line of the two planes of the side wall 32 and the rear wall 33); in actual production and processing settings, the intersection of the front wall 31 and the side wall 32 is a rounded transition setting, thereby forming a curved surface at the intersection of the front wall 31 and the side wall 32; on the 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 body 30 can represent the first side edge W (the same applies to the second side edge N). For the convenience of description in this application, the theoretical first side edge W and the theoretical second side edge N are used for description. In addition, a plane passing through the center of mass of the door body 30 and parallel to the door front wall 31 is recorded as the center of mass plane C. During the opening process of the door body 30, the center of mass plane C moves with the door body 30. In this embodiment, the center of mass plane C is determined by taking the geometric center of the door body 30 as the center of mass.

[0103] A door seal 20 is provided on the rear wall of the door 30. When the door 30 is closed, the door seal 20 abuts against the front face of the cabinet surrounding the access opening, effectively sealing the connection between the door 30 and the cabinet 10. This ensures that the door 30 seals the access opening and prevents cold air from escaping. Optionally, the door seal 20 is annular and includes side seals adjacent to the door sidewalls 32. The edges of the door seal 20 (side seals) adjacent to the door sidewalls 32 and distal to the door front wall 31 are designated as side seal edges F.

[0104] Reference Figures 2 to 4 , the first hinge member includes: a connecting portion 401 connected to the box body 10, and an extending 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 box body 10 by fasteners such as screws, pins and bolts. Specifically, for the hinge at the upper end of the door body 30, the connecting portion 401 is connected to the top wall of the box body 10. For the hinge at the lower end of the door body 30, the connecting portion 401 is connected to the front end surface of the box body 10. A first hinge axis 41 and a second hinge axis 42 are formed on the extending portion 402 of the first hinge member; wherein the second hinge axis 42 is located on the side of the first hinge axis 41 away from the side wall of the first body.

[0105] The second hinge member includes a guide portion 50 and a guide portion 60 located at the end of the door body 30 near the first hinge member. The first hinge shaft 41 is adapted to fit within the guide portion 50, while the second hinge shaft 42 is adapted to fit within the guide portion 60. During the process of rotating the door body 30 to open or close, the first hinge shaft 41 moves relative to the guide portion 50, while the second hinge shaft 42 moves relative to the guide portion 60. In this embodiment, the first hinge shaft 41, guided by the guide portion 50, moves linearly relative to the door body 30, while the second hinge shaft 42, guided by the guide portion 60, moves in a curved manner relative to the door body 30.

[0106] The first hinge shaft 41 and the second hinge shaft 42 are formed on the first hinge member connected to the box body 10 to form a limited axis for guiding the movement of the door body 30. Specifically, the first hinge shaft 41 and the second hinge shaft 42 extend in the vertical direction (the height direction of the box body 10) to adapt to the guide portion 50 or the guide portion 60 provided on the door body 30.

[0107] In this embodiment, the first hinge axis 41 and the second hinge axis 42 are provided on the extension portion 402 at the upper and lower ends of the door body 30, and the guide portion 50 and the guide portion 60 are provided at the upper and lower ends of the door body 30. It should be noted that the configuration of this embodiment is not limited to being provided at both the upper and lower ends of the door body 30, and can be provided as needed to connect the door body 30 and the box body 10.

[0108] In this embodiment, Figure 2-Figure 6 As shown, the plane where the side surface (first body side wall) of the box body 10 close to the hinge plate 40 is located is defined as the reference plane M0, the side of the reference plane M0 away from the inner cavity of the storage chamber is recorded as the outer side, and the opposite side close to the storage chamber is recorded as the inner side.

[0109] The refrigerator includes two door bodies 30 arranged opposite to each other, and the two door bodies 30 cooperate to open or close the access opening. A side sealing strip 3 is provided on the side of any one of the door bodies 30 away from its door side wall 32; wherein, when the two door bodies 30 are closed, the side sealing strip 3 on any one of the two door bodies 30 seals with the side sealing strip 3 on the other; that is, when the two door bodies 30 are closed, the two side sealing strips 3 are squeezed into the gap between the two door bodies 30 to effectively seal the space between the two door bodies 30 and the cabinet 10 to prevent cold air from escaping. When the refrigerator is provided with a traditional hinge (a hinge that simply rotates to open or a hinge that is provided with a double shaft and a double groove to realize an embedded refrigerator), when one of the door bodies 30 is opened, due to the tight compression of the side sealing strips 3 on both sides in the closed state, the opened door body 30 will drive the other door body 30 to open when it is opened, resulting in an increase in the opening area of ​​the access opening, an increase in the amount of cold overflow, and an increase in power consumption; and the temperature in the storage room is high, affecting the preservation of food. To this end, in the present invention, the first hinge member and the second hinge member of the hinge assembly cooperate to form a track-changing mechanism, so that the opened door body 30 moves outward during the opening process, thereby preventing one door body 30 from being driven to open when the other door body 30 is opened.

[0110] In order to meet the above requirements, the door body 30 needs to be able to move outward during the rotation process, so that in a double-door refrigerator without a rotating beam (either of the two door bodies 30 is provided with a side sealing strip 3 on the side away from its door side wall 32), when one door body 30 is opened, it does not cause the other door body 30 to open. Taking the first hinge member (hinge plate 40) as an example where it is arranged on the right side of the door body 30, the outer side is the right side, that is, the door body 30 needs to be able to move to the right when it is opened; taking the first hinge member (hinge plate 40) as an example where it is arranged on the left side of the door body 30, the outer side is the left side, that is, the door body 30 needs to be able to move to the left. In this embodiment, the right side wall of the box body 10 is the first body side wall, and the first body side wall is described as the reference plane M0.

[0111] like Figure 5 As shown, in some embodiments of the present application, in the projection of the top wall of the box body 10, the straight line where the central axis of the first hinge axis 41 and the central axis of the second hinge axis 42 are located is perpendicular to the side wall of the first body; that is, in the projection of the top wall of the box body 10, the straight line where the central axis of the first hinge axis 41 and the central axis of the second hinge axis 42 are located is parallel to the plane where the take-in and put-out port is located.

[0112] In this embodiment, the trajectory line of the relative movement of the central axis of the first hinge shaft 41 guided by the guide portion 50 is recorded 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 portion 60 is recorded 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 portion 50 guides the movement of the first hinge shaft 41, so that the central axis of the first hinge shaft 41 moves along a straight line.

[0113] As a configurable method, 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; and the guide groove is located on the side of the guide groove close 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 recorded as the guide trajectory line S, and the center trajectory line of the guide groove is recorded as the guide trajectory line K. In the present 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 close to the first side edge W. The above configuration enables the first hinge shaft 41 cooperating with the guide portion 50 to perform a straight motion relative to the guide portion 50, and enables the second hinge shaft 42 cooperating with the guide portion 60 to perform a curved motion relative to the guide portion 60, effectively increasing the smoothness of the door body 30 rotating and opening.

[0114] In this embodiment, along the direction from the end of the door body 30 away from the door side wall 32 to the door side wall 32 , the distance between the guide track line K and the door front wall 31 first increases and then decreases.

[0115] In this embodiment, Figure 5 As shown, within the projection of the plane where the top wall of the box body 10 is located, the door side wall 32 is the Y-axis, and the plane passing through the first side edge W and parallel to the access port is the X-axis, that is, the plane where the door front wall 31 is located is the X-axis (in this embodiment, the door front wall 31 is perpendicular to the door side wall 32); wherein, the X-axis and the Y-axis are perpendicular and intersect at the origin O; the direction from the door front wall 31 to the door rear wall 33 is the positive direction of the Y-axis, and the direction from the door side wall 32 to the end of the door body 30 opposite to the door side wall 32 is 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.

[0116] In the coordinate system XOY, the equation of the straight line where the guide trajectory line S is located is x=a, y∈[y1, y2];

[0117] The direction of the curve where the guide trajectory line K is located is y=f(x), x∈[x1,x2]; where 0 <x1≤a<x2;f(x)> 0; that is, y = f(x) is located in the first quadrant of the XOY coordinate system; in this embodiment, as x increases, y = f(x) first increases and then decreases. That is, y = f(x) has only one extreme point f(x`), and f(x`) is the maximum value of y = f(x) in the segment x∈[x1, x2]. In this embodiment, y = f(x) is an upwardly convex function. In some embodiments of the present application, y = f(x) can be set as a portion of a conic section.

[0118] In some embodiments of the present invention, f(x`)>y2>y1≥f(x2). It is possible to set D1=x2-a to any value between 8 mm and 14 mm, D2=x2-x1 to any value between 16 mm and 20 mm, and D3=f(x`)-f(x2) to any value between 20 mm and 24 mm. The area of ​​the end of the door body 30 occupied by the second hinge member having the above trajectory characteristics is very small, and the arrangement of the guide part 50 and the guide part 60 is very compact; under the setting of the above trajectory line, the space occupied by the guide part 50 and the guide part 60 for guiding the movement of the first hinge shaft 41 and the second hinge shaft 42 is reduced as a whole; in the present invention, it is adapted to the first hinge shaft 41 and the second hinge shaft, and the radius of the first hinge shaft 41 and the second hinge shaft 42 is any value between 3mm and 7mm; the overall area occupied by the second hinge member is in the range of (19mm~27mm)·(23mm~31mm), which can adapt to a door body 30 with a thinner thickness (thickness not greater than 35mm).

[0119] In some embodiments of the present application, the guide trajectory S includes 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, which are sequentially located near the access port. In some embodiments of the present application, the guide trajectory S is parallel to the door sidewall 32. Thus, 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 S extends from the starting guide point P0 along a straight line, sequentially 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 the sixth guide point P6. That is, in this embodiment, the starting guide point P0 and the sixth guide point P6 are the opposite end points of the guide trajectory S. The second guide point P2 is the midpoint of the guide trajectory line S, that is, the distance |P0P2| between the starting 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.

[0120] 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 first body side wall. In some embodiments of the present application, along the direction from the second body side wall to the first body side wall (along the negative direction of the X-axis), the distance between the guide trajectory line K and the access opening first decreases and then increases. It can be set that the distance between the fifth guide point Q5 and the access opening is the smallest. The guide trajectory line K extends from the starting guide point Q0 to the direction close to the first body side wall and the access opening along the curve, passing through the first guide point Q1, the second guide point Q2, the third guide point Q3, and the fourth guide point Q4 in sequence to the fifth guide point Q5, and then extends from the fifth guide point Q5 along the curve to the direction close to the first body side wall and away from the access opening to the sixth guide point Q6. That is, in this embodiment, the starting guide point Q0 and the sixth guide point Q6 are the opposite end points of the guide trajectory line S. That is, the coordinates of the fifth guide point Q5 in XOY are (x', f(x')).

[0121] Corresponding to the compact size setting of the aforementioned guide track line S and the guide track line K, as shown in FIG. Figure 5 As shown, in the projection of the plane where the top wall of the box 10 is located, along the X-axis direction, the distance between the starting guide point P0 and the starting guide point Q0 is D1 (= x2-a), and the distance between the starting guide point Q0 and the sixth guide point Q6 is D2 (= x2-x1); along the Y-axis direction, the distance between the fifth guide point Q5 and the starting guide point Q0 is D3 (= f(x`)-f(x2)).

[0122] In some embodiments of the present application, in the projection of the plane on which the top wall of the box body 10 lies, the straight line between the starting guide point P0 and the starting guide point Q0 is parallel to the door front wall 31. In this embodiment, the door front wall 31 is perpendicular to the door side wall 32, and thus the straight line between the starting guide point P0 and the starting guide point Q0 is perpendicular to the door side wall 32.

[0123] It should be noted that, in this embodiment, the starting 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 body 30 is closed; the sixth guide point P6 corresponds to the position of the door body 30 when it is opened to the maximum angle G max The starting guide point Q0 corresponds to the position of the center axis of the second hinge axis 42 relative to the guide track line K when the door body 30 is closed; the sixth guide point Q6 corresponds to the position of the center axis of the second hinge axis 42 relative to the guide track line K when the door body 30 is opened to the maximum angle G. max The position of the center axis of the second hinge axis 42 relative to the guide trajectory line K.

[0124] In some embodiments of the present application, when designing the second hinge, in order to prevent the door body 30 from moving excessively toward the box body 10 due to excessive force when closing the door body 30, an extension section is provided at one end of the guide track line S or the guide track line K close to the door front wall 31 to reserve space for the above situation. Similarly, in order to prevent the door body 30 from being opened to the maximum angle G max In case that the guide door body is excessively moved due to excessive force (due to deformation or other factors), an extension section is provided at the end of the guide trajectory line S away from the door front wall 31 or at the end of the guide trajectory line K close to the door side wall 32 to reserve space for the above situation. When space is reserved at at least one of the two ends of the guide portion 50 or the guide portion 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 the trajectory line where they are located; 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 the trajectory line where they are located is only an implementable method, which essentially corresponds to the position of the two hinge axes when the door body 30 is closed or opened to the maximum angle, and is not limited by the endpoints of the trajectory line where they are located.

[0125] In this embodiment, the second hinge axis 42 is located on a side of the first hinge axis 41 away from the first body side wall, and the guide portion 50 is located on a side of the guide portion 60 away from the first side edge W. The first hinge axis 41 moves linearly relative to the guide portion 50, and the second hinge axis 42 moves in a curve relative to the guide portion 60, so that the door body 30 can move outward (away from the second body side wall) for a distance while rotating. This allows the side sealing strips 3 on the door body 30 to move outward when the door body 30 is opened, allowing the side sealing strips 3 on the opened door body 30 to quickly separate from the side sealing strips 3 on the other door body 30, preventing the side sealing strips 3 on the two door bodies 30 from squeezing each other, thereby preventing the side sealing strips 3 installed on the two opposing door bodies 30 from interfering with each other when the door body 30 is opened. This prevents the other door body 30 from being opened when only one of the two door bodies 30 is opened, effectively preventing the opening area of ​​the access opening from increasing and reducing the amount of cooling overflow. As another setting method, the door body 30 moves forward (away from the box body 10) a certain distance while opening and moving outward to avoid squeezing the door seal 20 when the door body 30 is opened, and prevent the door body 30 and the box body 10 from interfering with each other and affecting the opening of the door body 30.

[0126] Since the guide portion 50 and the first hinge shaft 41, as well as the guide portion 60 and the second hinge shaft 42, are in relative motion, when the door body 30 is opened, with the guide portion 50 and the guide portion 60 as stationary reference points, it is equivalent to the first hinge shaft 41 moving under the restriction of the guide portion 50, and the second hinge shaft 42 moving under the restriction of the guide portion 60. For the sake of convenience, this application uses the guide portion 50 and the guide portion 60 as stationary reference points, and the first hinge shaft 41 and the second hinge shaft 42 move relative to the reference points for description.

[0127] In this embodiment, the center axis of the first hinge axis 41 is denoted as the guide center axis P, and the center axis of the second hinge axis 42 is denoted as the guide center axis Q; in the projection of the plane where the top wall of the box body 10 is located, the line segment PQ is denoted as the axis line segment PQ; the center of the axis line segment PQ is denoted as the axis center point I. Figure 6-Figure 22 As shown, the movement of the first hinge shaft 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 shaft 42 along the guide portion 60 is equivalent to the movement of the guide center axis Q along the guide trajectory line K, so that the door body 30 can move a distance outward (toward the side wall of the second body) while rotating. On the one hand, it can avoid the interference of the side sealing strips 3 installed on the two opposite door bodies 30, thereby reducing the loss of cooling capacity; on the other hand, it can reduce the lateral obstruction of the door seal 20 set on the door rear wall 33 to the access port, thereby increasing the lateral size of the drawer installed in the storage room and increasing the space utilization rate of the storage room. The movement of the door body 30 relative to the box body 10 is equivalent to the relative movement of the two within the plane where the top wall of the box body 10 is located (or in a plane parallel to the top wall of the box body 10); that is, the movement of the door body 30 relative to the box body 10 can be attributed to the relative movement within a two-dimensional plane. Since the first hinge member having the first hinge axis 41 and the second hinge axis 42 is fixed on the box body 10, and the second hinge member having the guide portion 50 and the guide portion 60 is located on the door body 30, within the plane where the top wall of the box body 10 is located, the movement of the first hinge member (axial line segment PQ) relative to the second hinge member (guide portion 50 and guide portion 60) is equivalent to the movement of the axial line segment PQ relative to the door body 30, and is also equivalent to the movement of the box body 10 relative to the door body 30.

[0128] In the following description of the present invention, for ease of illustration, the movement of the axis line segment PQ relative to the second hinge member (guide portion 50 and guide portion 60) provided on the door body 30 within the plane of the top wall of the box body 10 is selected to represent the movement of the box body 10 relative to the door body 30. In other words, the description of relative movement in the present invention is described as relative movement within a two-dimensional plane.

[0129] like Figure 6As shown, in this embodiment, when the door body 30 is in the closed state, the center axis of the first hinge axis 41 (the guide center axis P) is located at the starting guide point P0 of the guide trajectory line S, and the center axis of the second hinge axis 42 (the guide center axis Q) is located at the starting guide point Q0 of the guide trajectory line K. That is, when the door body 30 is in the closed state, the first hinge axis 41 is located at the end of the guide portion 50 away from the access port, and the second hinge axis 42 is located at the end of the guide portion 60 away from the first body side wall and the access port; the second hinge axis 42 is located on the side of the first hinge axis 41 away from the first body side wall. In some embodiments of the present application, when the door body 30 is closed, relative to the door rear wall 33, the first hinge axis 41 and the second hinge axis 42 are both close to the door front wall 31; that is, when the door body 30 is closed, the first hinge axis 41 and the second hinge axis 42 are both located on the side of the centroid plane C close to the door front wall 31. As a configurable method, when the door body 30 is closed, the distance between the straight line P0Q0, which contains the center axes of the first hinge axis 41 and the second hinge axis 42, and the door front wall 31 is recorded as L1, and the distance between the straight line P0Q0, which contains the center axes of the first hinge axis 41 and the second hinge axis 42, and the door rear wall 33 is recorded as L2; ​​where L1:L2 are any value between 0.3 and 0.5. A hinge assembly with the above trajectory characteristics not only makes the machining and fitting accuracy of the hinge assembly detectable, but also fully utilizes the space at the end of the door body 30, enabling the door body 30 to open over a wide range of strokes under the configuration of the hinge assembly.

[0130] In this embodiment, Figure 7-Figure 22 As shown, under the constraints of the guide portion 50 and the first hinge shaft 41, the guide portion 60 and the second hinge shaft 42, the refrigerator is opened at the maximum angle G max The door body 30 is opened from the closed state to the maximum angle G max During the process, when the door body 30 rotates and opens to a specific angle, the relative position of the first hinge shaft 41 relative to the guide portion 50 and the relative position of the second hinge shaft 42 relative to the guide portion 60 are specifically as follows:

[0131] In the following description, Indicates the opening angle of the door 30. The opening angle when the door 30 is closed The opening angle of the door 30 when it is opened relative to the box body 10 to open the access opening is a positive number;

[0132] like Figure 6 As shown, 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 axis center point I is located at the starting midpoint I0 relative to the second hinge member.

[0133] like Figure 7-11 As shown, During the above opening process, the guide center axis P makes a linear motion along the guide trajectory line S toward the direction close to the door rear wall 32, and the guide center axis Q makes a curved motion along the guide trajectory line K toward the direction close to the door side wall 31 and the door rear wall 32.

[0134] Above, the door body 30 opens at an angle of The movement trend of the opening angle interval remains the same; the only difference is that the opening angle is different, the position of the central axis of the first hinge axis 41 relative to the guide track line S is different, and the position of the central axis of the second hinge axis 42 relative to the guide track line K is different. When any one of the opening angles is selected, it can represent the relative positions of the first hinge axis 41 and the guide portion 50, and the second hinge axis 42 and the guide portion 60 when the door body 30 is opened to the corresponding interval; specifically, Figure 7-10 As shown, G2, G3, or G4 represents a position within this opening angle range, for comparison with other opening positions of the door body 30; wherein 0° < G1 < G2 < G3 < G4 < G5. Specifically, the positional relationships of the guide center axis P relative to the guide trajectory line S and the guide center axis Q relative to the guide trajectory line K when the door body 30 is opened to G1, G2, G3, or G4 are as follows.

[0135] like Figure 7 and Figure 14 As shown, When the door body 30 rotates and opens to G1, the guide center axis P is located at the first guide point P1 of the guide trajectory S, which is located on the side of the starting guide point P0 close to the door rear wall 33. The guide center axis Q is located at the first guide point Q1 of the guide trajectory K, which is located on the side of the starting guide point Q0 close to the door side walls 32 and door rear wall 33. The axis center point I moves along the axis line segment PQ to the first midpoint I1, which is located on the side of the starting midpoint I0 close to the door side walls 32 and door rear wall 33. G1 can be set to any value between [15°, 19°].

[0136] like Figure 8 and Figure 15 As shown, , the door body 30 rotates open to G2; the guide center axis P is located at the second guide point P2 of the guide trajectory line S (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 close to the door rear wall 33; 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 close to the door side wall 32 and the door rear wall 33; the axis center point I moves to the second midpoint I2 along the axis line segment PQ, and the second midpoint I2 is located on the side of the first midpoint I1 close to the door side wall 32 and the door rear wall 33; G2∈[44°, 48°] can be set to any value.

[0137] like Figure 9 and Figure 16 As shown, , the door body 30 rotates open to G3; the guide center axis P is located at the third guide point P3 of the guide trajectory line S, and the third guide point P3 is located on the side of the second guide point P2 close to the door rear wall 33; the guide center axis Q is located at the third guide point Q3 of the guide trajectory line K, and the third guide point Q3 is located on the side of the second guide point Q2 close to the door side wall 32 and the door rear wall 33; the axis center point I moves to the third midpoint I3 along the axis line segment PQ, and the third midpoint I3 is located on the side of the second midpoint I2 close to the door side wall 32 and the door rear wall 33; G3∈[68°, 72°] can be set to any value.

[0138] like Figure 10 and Figure 17 As shown, When the door 30 rotates and opens to G4, the guide center axis P is located at the fourth guide point P4 of the guide trajectory line S, and the fourth guide point P4 is located on the side of the third guide point Q3 close to the door rear wall 33. The guide center axis Q is located at the fourth guide point Q4 of the guide trajectory line K, and the fourth guide point Q4 is located on the side of the third guide point Q3 close to the door side wall 32 and the door rear wall 33. The axis center point I moves along 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 close to the door side wall 32 and the door rear wall 33. It can be set that G4 = 90°. In some embodiments of the present application, the straight line P4Q4 on which the fourth guide point P4 and the fourth guide point Q4 are located is parallel to the door side wall 32, 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 the present application, the straight line P4Q4 is perpendicular to the plane of the door front wall 31, that is, the straight line P4Q4 is perpendicular to the door front wall 31, and G4 = 90°. In addition, it can be set that the fourth guide point Q4 coincides with the fifth guide point Q5, that is, when the door body 30 is opened, when the guide center axis Q moves to the extension line of the guide trajectory line S, its distance from the take-in and take-out port is minimized. That is, the coordinates of the fourth guide point Q4 in XOY are (x`, f(x`)). In other embodiments of the present application, it can be set that when the door body 30 is opened to 90° (at this time, the position of the movement of the guide center axis Q is not limited to being on the extension line of the guide trajectory line S), its distance from the take-in and take-out port is minimized. When the door body 30 is opened to 90°, it moves to the fifth guide point Q5, and its coordinates in XOY at the point on the guide trajectory line are (x`, f(x`)).

[0139] As a configurable manner, when the door body 30 is opened to 90°, the front wall 31 of the door body 30 is located outside the first side wall of the box body 10 to shield the box body from bulging caused by foaming.

[0140] Configurable, combined Figure 6 and Figure 10 As shown, when the door body 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 door front wall 31 is parallel to the plane where the take-in and put-out port is located, and the door side wall 32 is flush with the reference plane M0.

[0141] When the door 30 is opened to 90°, the distance between the fourth guide point P4 and the door front wall 31 is L2' (not shown in the figure); at this time, the door side wall 32 is parallel to the plane of the access port, and the door front wall 31 is parallel to the reference plane M0. As a setting, L2'>L1', when the door 30 is opened to 90°, the door front wall 31 is located outside the reference plane M0 (the first door side wall). As another setting, L2'=L1', when the door 30 is opened to 90°, the door front wall 31 is flush with the reference plane M0 (the first door side wall).

[0142] like Figure 11 and Figure 18 As shown, When the door body 30 rotates and opens to G5, the guide center axis P is located at the fifth guide point P5 of the guide trajectory S, and the fifth guide point P5 is located on the side of the fourth guide point P4 close to the door rear wall 33. The guide center axis Q is located at the fifth guide point Q5 of the guide trajectory K, and the fifth guide point Q5 is located on the side of the fourth guide point Q4 close to the door side walls 32 and door rear wall 33. The axis center point I moves along 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 close to the door side walls 32 and door rear wall 33. G3 can be set to any value between [96°, 100°].

[0143] As described above, in the process of the door body 30 opening from the closed state to G5, the first hinge shaft 41 moves in a straight line parallel to the door side wall 32 along the guide part 50 toward the door rear wall 33, and the second hinge shaft 42 moves in a curve along the guide part 60 toward the door side wall 32 and the door rear wall 33.

[0144] like Figure 12 and Figure 19 As shown, When the door 30 opens from G5 to G max During the above opening process, the guide center axis P moves linearly along the guide trajectory line S toward the door rear wall 32, and the guide center axis Q moves curvedly along the guide trajectory line K toward the door side wall 31 and away from the door rear wall 32.

[0145] Above, the door body 30 opens at an angle of The movement trend of the opening angle interval remains the same; the only difference is that the opening angle is different, the position of the central axis of the first hinge axis 41 relative to the guide track line S is different, and the position of the central axis of the second hinge axis 42 relative to the guide track line K is different. When any one of the opening angles is selected, it can represent the relative positions of the first hinge axis 41 and the guide portion 50, and the second hinge axis 42 and the guide portion 60 when the door body 30 is opened to the corresponding interval; specifically, Figure 12 and Figure 19 As shown, It represents the position within the opening angle range for comparison with when the door body 30 is opened to other states.

[0146] like Figure 12 and Figure 19 As shown, When the door 30 rotates to open to G maxThe guiding center axis P is located at the sixth guiding point P6 of the guiding trajectory line S, and the sixth guiding point P6 is located on the side of the fifth guiding point P5 close to the door rear wall 33; the guiding center axis Q is located at the sixth guiding point Q6 of the guiding trajectory line K, and the sixth guiding point Q6 is located on the side of the fifth guiding point Q5 close to the door side wall 32 and away from the door rear wall 33; the axis center point I moves to the sixth midpoint I6 along the axis line segment PQ, and the sixth midpoint I6 is located on the side of the fifth midpoint I5 close to the door side wall 32 and away from the door rear wall 33; G can be set max ∈ any value in [118°, 125°].

[0147] Above, the door 30 is opened from G5 to G max During the process, the first hinge shaft 41 moves along the guide portion 50 in a straight line parallel to the door side wall 32 toward the door rear wall 33, and the second hinge shaft 42 moves in a curve along the guide trajectory line K toward the door side wall 32 and away from the door rear wall 33.

[0148] In some embodiments of the present application, the door body 30 is opened to the maximum angle G max the second hinge shaft 42 is located on the side of the first hinge shaft 41 close to the door side wall 32 and the door rear wall 31, and is located at the end of the guide portion 60 away from the door front wall 31.

[0149] In this embodiment, 0°<G1<G2<G3<G4=90°<G5<G max ; Above G1, G2, G3, G4, G5, G max They are sequentially recorded as the first angle, the second angle, the third angle, the fourth angle, the fifth angle, and the maximum angle. In addition, it should be noted that the above restrictions on the range of each angle are only a feasible setting method and are not intended to be a finite limitation on each angle.

[0150] In some embodiments of the present application, 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 toward 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 toward the door side wall 32 and away from the door rear wall 33 to the sixth guide point P6; that is, the intersection of the first trajectory line K1 and the second trajectory line K2 is the fifth guide point P5.

[0151] Among them, the midpoint of the first trajectory line K1 is recorded as Q`; during the opening process of the door body 30, when the guide center axis Q moves to Q`, the guide center axis P moves to P` of the guide trajectory line S, and the midpoint of the guide center axis P and the guide center axis Q is located at I` relative to the door body 30. At this time, the opening angle of the door body 30 is G`.

[0152] In conjunction with the aforementioned process of opening the door body 30, when the guide center axis P moves to the second guide point P2, which is the midpoint of the guide trajectory line S, the guide center axis moves to the second guide point Q2 on the first trajectory line K1, and the angle at which the door body 30 is opened is G2. Among them, |G2-G`|∈[0°, 4°] is any value. As a configurable method, G2=G`, that is, when the guide center axis P moves to the midpoint of the guide trajectory line S during the opening of the door body 30, the guide center axis Q moves to the midpoint of the first trajectory line K1. The hinge assembly with the above trajectory characteristics can make the movement of the first hinge axis 41 relative to the guide portion 50 and the movement of the second hinge axis 42 relative to the guide portion 60 more balanced, and can simultaneously ensure that the maximum angle at which the door body 30 can be opened is large enough.

[0153] It should be noted that, in the present invention, the midpoint of the guide trajectory S refers to the midpoint between the position P0 of the guide center axis P on the guide trajectory S when the door body 30 is closed and the position P6 of the guide center axis P on the guide trajectory S when the door body 30 is opened to its maximum angle. Similarly, the midpoint of the first trajectory K1 refers to the midpoint between the position Q0 of the guide center axis Q on the guide trajectory S when the door body 30 is closed and the position Q5 of the guide center axis Q on the guide trajectory S when the door body 30 is opened to G5.

[0154] In some embodiments of the present application, Figure 22 As shown, when the door 30 opens to G4, the guide center axis Q moves to the fourth guide point Q4 of the guide trajectory K, and the guide center axis Q is located on the extension line of the guide trajectory S. The ratio G2 / G4 can be set to any value between 0.3 and 0.6. This ensures more balanced movement of the door 30 and a larger maximum opening angle.

[0155] In some embodiments of the present application, when the door body 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 door rear wall 33 is the smallest. On the one hand, the above setting can effectively detect the assembly accuracy according to the positional particularity of the 90° open state of the door body after the door body 30 and the box body 10 are installed in coordination. On the other hand, it can detect the molding accuracy of the guide part 50 and the guide part 60, making the assembly molding accuracy detectable, and meeting the complex movement requirements of finely controlling the door body 30 to complete the rotation and outward movement. In combination with the above setting, it can be set that the fifth guide point Q5 is located on the extension line of the guide trajectory line P to further improve the detectability and ensure accuracy.

[0156] In combination with the above situation where the door body 30 is opened to a specific angle, in this embodiment, when the door body 30 is opened to the maximum angle G maxDuring the entire process of the door body 30 opening, the first hinge shaft 41 always moves relative to the guide portion 50, and performs a unidirectional linear motion parallel to the door side wall 32 in the direction close to the door rear wall 32; the second hinge shaft 42 always moves relative to the guide portion 60, and performs a unidirectional curved motion in the direction close to the first body side wall; that is, during the entire process of the door body 30 opening, the first hinge shaft 41 and the second hinge shaft 42 both maintain unidirectional movement without reversing, so that the force directions of the first hinge shaft 41 and the second hinge shaft 42 during the door body 30 opening process are always consistent, the door opening and closing feel is good, and the user experience is improved; in addition, the life of the guide portion 50 and the guide portion 60 is prolonged. Furthermore, during the entire process of the door body 30 opening, the first hinge shaft 41 and the second hinge shaft 42 maintain unidirectional circular motion throughout the entire process, so that there is no acceleration of stopping and moving again during the entire opening process of the door body 30, and the movement smoothness of the door body 30 is better.

[0157] Combined with the positions of the two limiting shafts (the first hinge shaft 41 and the second hinge shaft 42) relative to the limiting portion (the guide portion 50 and the guide portion 60) when the door body 30 is opened to a specific angle, it can be seen that the matching relationship between the first hinge shaft 41 and the guide portion 50 exists in the following conditions: when the door body 30 is opened from the closed state to G5, the second hinge shaft 42 moves along the guide portion 50 toward the direction close to the door side wall 32 and the door rear wall 33; when the door body 30 is opened from G5 to G max During the process, the first hinge shaft 41 moves along the guide portion 50 toward the door side wall 32 and away from the door rear wall 33. Figures 6-17 , see Figure 20 The following describes the relative movement of the two stages from the perspective of the matching relationship between the first hinge shaft 41 and the guide portion 50, and the second hinge shaft 42 and the guide portion 60:

[0158] (1) The first stage, combining Figures 6-11 , Figures 14-18 As shown, the door body 30 rotates from the closed state to open to G5.

[0159] In the first stage, the door body 30 opens from 0° through G1, G2, G3, G4 to G5. During this process, the guide center axis P moves linearly from the starting guide point P0 along the guide trajectory S parallel to the door sidewall 32 toward the door rear wall 33; the guide center axis Q moves curvedly from the starting guide point Q0 along the guide trajectory K toward the door rear wall 33 and the door sidewall 32.

[0160] Specifically, the guide center axis P moves from the starting guide point P0 along the guide trajectory line S through the first guide point P1, the second guide point P2, the third guide point P3, the fourth guide point P4 to the fifth guide point P5; the guide center axis Q moves from the starting guide point Q0 along the guide trajectory line K through the first guide point Q1, the second guide point Q2, the third guide point Q3, the fourth guide point Q4 to the fifth guide point Q5.

[0161] During the first stage of opening, with the first hinge (guide portion 50 and guide portion 60) as a reference, as the door body 30 opens from 0° to G5, the axis line segment PQ rotates clockwise from P0Q0 and moves toward the door sidewall 32 and door rear wall 33 to positions P1Q1, P2Q2, P3Q3, P4Q4, and P5Q5, respectively. That is, the axis line segment PQ's movement trend is P0Q0 → P1Q1 → P2Q2 → P3Q3 → P4Q4 → P5Q5. Simultaneously, the axis center point I's movement trend as the axis line segment PQ moves is I0 → I1 → I2 → I3 → I4 → I5. That is, as the door body 30 opens, the axis center point I moves toward the door sidewall 32 and door rear wall 33 relative to the door body 30.

[0162] In summary, during the process of the door body 30 opening from the closed state to G5, with the door body 30 (the first hinge) as a reference, the box body 10 has a displacement relative to the door body 30, which is a displacement parallel to the door rear wall 33 and close to the door side wall 32, and a displacement parallel to the door side wall 32 and close to the door rear wall 33. That is, the movement of the box body 10 relative to the door body 30 is decomposed into a displacement parallel to the door rear wall 33 and toward the door side wall 32, and a displacement parallel to the door side wall 32 and toward the door rear wall 33.

[0163] According to the relativity of motion, with the box body 10 as a reference, during the process of the door body 30 opening from the closed state to G5, the door body 30 has a displacement relative to the box body, which is a displacement away from its door side wall 32 along the direction parallel to the door rear wall 33 and a displacement away from its door rear wall 33 along the direction parallel to the door side wall 32. That is, relative to the box body 10, the displacement of the door body 30 is decomposed into a displacement away from the door side wall 32 along the direction parallel to the door rear wall 33 and a displacement away from the door rear wall 33 along the direction parallel to the door side wall 32. Among them, in the displacement decomposition of the door body 30 relative to the box body 10, the displacement of the door body 30 in the direction parallel to the door rear wall 33 away from the door side wall 32 is recorded as the first direction displacement The displacement in the direction parallel to the door side wall 32 and away from the door rear wall 33 is recorded as the second direction displacement.

[0164] In summary, in the process of the door body 30 opening from the closed state to the fifth angle G5, the first hinge axis 41 and the second hinge axis 42 both move in the direction away from the door front wall 31 relative to the door body 30. In some embodiments of the present application, in the process of the door body 30 opening from the closed state to the fifth angle G5, for each unit angle of the door body 30 opening, the distance of the first hinge axis 41 away from the door front wall 31 is recorded as ξ1, and the distance of the second hinge axis 42 away from the door front wall 31 is recorded as ξ2; wherein, ξ1<ξ2. As a configurable method, ξ1:ξ2∈[0.4,0.6] is any value. The setting of the hinge assembly with the above trajectory characteristics can effectively limit the relative motion trajectory of the first hinge axis 41 and the second hinge axis 42, so that the guide portion 50 and the guide portion 60 of the second hinge member are arranged more compactly, and can meet the requirements of the opening angle and movement direction of the door body 30.

[0165] (2) The second stage, combining Figure 11-12 ,like Figure 18-19 As shown, the door body 30 is rotated from G5 to G max process.

[0166] Door 30 opens 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 door rear wall 33; the guide center axis Q moves in a curve from the starting guide point Q0 along the guide trajectory line K toward the door side wall 32 and away from the door rear wall 32.

[0167] 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.

[0168] In the second stage of opening, the door 30 is opened from G5 to G6 with the first hinge (the guide portion 50 and the guide portion 60) as a reference. max During this process, axis segment PQ rotates clockwise from P5Q5 to P6Q6, moving closer to the door sidewall 32 and away from the door rear wall 33. That is, the movement trend of axis segment PQ is P5Q5 → P6Q6. Simultaneously, the movement trend of axis midpoint I as axis segment PQ moves is I5 → I6. That is, during the opening of door body 30, axis midpoint I moves closer to the door sidewall 32 and away from the door rear wall 33 relative to the door body 30.

[0169] In summary, the door 30 is opened from G5 to G maxDuring the process, with the door body 30 (first hinge) as a reference, the box body 10 has a displacement relative to the door body 30, which is a displacement toward the door side wall 32 in a direction parallel to the door rear wall 33, and a displacement away from the door rear wall 33 in a direction parallel to the door side wall 32. That is, the movement of the box body 10 relative to the door body 30 is decomposed into a displacement toward the door side wall 32 in a direction parallel to the door rear wall 33, and a displacement away from the door rear wall 33 in a direction parallel to the door side wall 32.

[0170] According to the relativity of movement, with the box 10 as a reference, the door 30 opens from G5 to G max During the process, the door body 30 has a displacement relative to the box body 10, which is a displacement away from the door side wall 32 along the direction parallel to the door rear wall 33 and a displacement closer to the door rear wall 33 along the direction parallel to the door side wall 32; that is, relative to the box body 10, the displacement of the door body 30 is decomposed into a displacement away from the door side wall 32 along the direction parallel to the door rear wall 33 and a displacement closer to the door rear wall 33 along the direction parallel to the door side wall 32. Among them, the displacement of the door body 30 in the direction parallel to the door rear wall 33 away from the door side wall 32 is recorded as the first direction displacement The displacement in the direction parallel to the door side wall 32 and close to the door rear wall 33 is recorded as the second direction displacement.

[0171] Combined with the first and second stages of the movement of the door body 30, relative to the box body 10, the door body 30 opens from the closed state to the G max During the process, the door body 30 has a first direction displacement parallel to the door rear wall 33 The second direction displacement parallel to the door side wall 32 At different opening stages of the door body 30, the first direction displacement and the second direction displacement The direction will be different.

[0172] See also Figure 23-Figure 27 As shown; in the plane where the top wall of the box body 10 is located, on the side of the box body 10 close to the door body 30, a displacement coordinate system AOB is established; specifically, in the displacement coordinate system AOB, OB is perpendicular to the plane where the take-in and put-out port is located, and B is located on the side of O away from the take-in and put-out port (front side); OA is parallel to the plane where the take-in and put-out port is located, and A is located on the side of O away from the second body side wall (outside). That is, in the displacement coordinate system AOB, the direction from the second body side wall to the first body side wall is positive, and the direction from the take-in and put-out port to the door front wall 31 when the door body 30 is closed (from back to front) is positive. It should be noted that during the opening process of the door body 30, the displacement coordinate system AOB remains stationary relative to the box body 10, and it does not move with the opening of the door body 30.

[0173] (1) Figures 6-10As shown, during the process of the door body 30 opening from the closed position to 90 degrees, as the door body 30 rotates counterclockwise relative to the box body 10, the door side walls 32, door rear wall 33, and door front wall 31 also rotate counterclockwise during this stage of the opening process. Within the plane of the top wall of the box body 10, the door side walls 32 extend outward and forward along the direction from the second side edge N to the first side edge W (the door rear wall 33 to the door front wall 31); and the door rear wall 33 extends inward and forward along the direction from the door side walls 32 to the end of the door body 30 opposite the door side walls 32.

[0174] During the above opening process, the door side wall 32 starts to rotate counterclockwise from a state parallel to the reference plane M0, and the angle between the door side wall 32 and the plane where the access port is located gradually decreases, while the angle between the door side wall 32 and the reference plane M0 gradually increases; that is, during the process of the door body 30 opening from the closed state to 90°, 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 32 extends to the side away from the second body side wall and the access port. At the same time, the angle between the door rear wall 33 and the plane where the access port is located gradually increases, while the angle between the door rear wall 33 and the reference plane M0 gradually decreases; that is, during the process of the door body 30 opening from the closed state to 90°, relative to the box body 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 door rear wall 33 extends in a direction away from the first body side wall and the access port.

[0175] Combined with the displacement direction of the door body 30 relative to the box body 10 during the first stage of the door body 30 opening process, it can be concluded that when the door body 30 is opened from the closed state to 90 degrees, with the box body 10 as a reference, the first direction displacement of the door body 30 parallel to the door rear wall 33 is Pointing to the direction away from the door side wall 32, that is, the first direction displacement Pointing to the inner front side of the box body 10 (inward and forward side); the door body 30 is parallel to the second direction displacement of the door side wall 32 Pointing to the direction away from the door rear wall 33, that is, the second direction displacement It points to the outer front side of the box body 10 (the side facing outward and forward).

[0176] like Figure 23-24 As shown, in the displacement coordinate system AOB, when the door body 30 is opened from the closed state to 90 degrees, the first direction displacement of the door body 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 and the second direction displacement Displacement decomposition is performed on the A axis and the B axis respectively; displacement in the first direction The displacement on the A axis is The displacement on the B axis is >0; displacement in the second direction The displacement on the A axis is The displacement on the B axis is Among them, the trajectory feature setting of the present invention has Then there is, That is, when the door body 30 is opened from the closed state to 90 degrees, in the displacement coordinate system AOB, the door body 30 has a first partial displacement and the second displacement It can be concluded from this that: relative to the box body 10, the door body 30 has a tendency to move forward along the A axis and toward the B axis, that is, the door body 30 has a tendency to move outward and forward; that is, in the process of opening the door body 30 from the closed state to 90°, the door body 30 has a tendency to move outward and forward relative to the box body 10.

[0177] (2) Figure 10 As shown, when the door body 30 is opened to 90 degrees, the door side wall 33 is parallel to the plane of the access opening 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.

[0178] Combined with the displacement direction of the door body 30 relative to the box body 10 during the first stage of the door body 30 opening process, it can be concluded that when the door body 30 is opened to 90 degrees, with the box body 10 as a reference, the door body 30 is displaced in the first direction parallel to the door rear wall 33. Pointing to the direction away from the door side wall 32, that is, the first direction displacement Pointing to the front side of the box 10; the door body 30 is parallel to the second direction displacement of the door side wall 32 The direction of movement is away from the door rear wall 33, i.e. the second direction displacement Pointing to the outside of the box 10.

[0179] like Figure 25 As shown, in the displacement coordinate system AOB, the first direction displacement of the door body 30 is Along the B axis, the second direction displacement Along the A axis. Displacement in the first direction The displacement on the A axis is The displacement on the B axis is Second direction displacement The displacement on the A axis is The displacement on the B axis is in, That is, when the door body 30 is opened to 90°, in the displacement coordinate system AOB, the door body 30 has a first displacement and the second displacement It can be concluded from this that the door body 30 has a displacement moving outward and forward relative to the box body 10 ; that is, when the door body 30 is opened to 90°, the door body 30 has a tendency to move outward and forward relative to the box body 10 .

[0180] (3) Figure 10-12 As shown, when the door body 30 is rotated 90 degrees to open to G max During the process of opening, as the door body 30 rotates counterclockwise relative to the box body 10, the door sidewall 32 also rotates counterclockwise during this stage of the opening process. Within the plane of the top wall of the box body 10, the door sidewall 32 extends outward and rearward along the direction from the second side edge N to the first side edge W; and the door rear wall 33 extends outward and forward along the direction from the door sidewall 32 to the end of the door body 30 opposite the door sidewall 32.

[0181] In the above opening process, the door side wall 32 starts to rotate counterclockwise from a state perpendicular to the reference plane M0, and the angle between the door side wall 32 and the plane where the access port is located gradually increases and the angle between the door side wall 32 and the reference plane M0 gradually decreases; that is, when the door body 30 rotates from 90° to G max During the process, 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 32 extends away from the second body side wall and closer to the access opening. At the same time, the angle between the door rear wall 33 and the plane where the access opening is located gradually decreases, and the angle between it and the reference plane M0 gradually increases; that is, when the door body 30 is rotated from 90 degrees to G max During the opening and closing process, relative to the box body 10, the door rear wall 33 extends in a direction away from the second body side wall and the access opening along the direction from the door side wall 32 to the end of the door body 30 opposite to the door side wall 32.

[0182] In this embodiment, G4=90°<G5; Combined with the displacement in the first direction in the first and second stage analysis, and the second direction displacement The following description of the door body 30 is as follows: max The process is analyzed in stages.

[0183] In the process of opening the door body 30 from 90° to G5 in the first stage, the door body 30 and the door rear wall 33 are displaced in parallel in the first direction with the box body 10 as a reference. Pointing to the direction away from the door side wall 32, that is, the first direction displacement Pointing to the outer front side of the box body 10 (outward and forward side); the door body 30 is displaced in the second direction parallel to the door side wall 32 Pointing to the direction away from the door rear wall 33, that is, the second direction displacement It points to the outer rear side of the box body 10 (outward and rearward).

[0184] like Figure 26As shown, in the displacement coordinate system AOB, during the process of the door body 30 opening from 90° to G5, the first direction displacement of the door body 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 and the second direction displacement Displacement decomposition is performed on the A axis and the B axis respectively; displacement in the first direction The displacement on the A axis is The displacement on the B axis is Second direction displacement The displacement on the A axis is The displacement on the B axis is Among them, the trajectory feature setting of the present invention has Then there is, That is, in the displacement coordinate system AOB, the door body 30 has a first displacement and the second displacement It can be concluded from this that: relative to the box body 10, the door body 30 has a tendency to move forward along the A axis and toward the B axis, that is, the door body 30 has a tendency to move outward and forward; that is, in the process of the door body 30 opening from 90° to G5, the door body 30 has a tendency to move outward and forward relative to the box body 10.

[0185] In the second stage of door 30 opening, it is opened from G5 to G max During the process (90°<G5), with the box body 10 as a reference, the door body 30 and the door rear wall 33 are displaced in a first direction parallel to each other. Pointing to the direction away from the door side wall 32, that is, the first direction displacement Pointing to the outer front side of the box body 10 (outward and forward side); the door body 30 is displaced in the second direction parallel to the door side wall 32 Pointing to the direction close to the door rear wall 33, that is, the second direction displacement It points to the inner front side of the box body 10 (the side facing inward and forward).

[0186] 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 door body 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 and the second direction displacement Displacement decomposition is performed on the A axis and the B axis respectively; displacement in the first direction The displacement on the A axis is The displacement on the B axis is Second direction displacement The displacement on the A axis is The displacement on the B axis is Among them, the trajectory feature setting of the present invention has Then there is, That is, in the displacement coordinate system AOB, the door body 30 has a first displacement and the second displacement It can be concluded that: relative to the box body 10, the door body 30 has a tendency to move along the positive direction of the A axis and move toward the positive direction of the B axis, that is, the door body 30 has a tendency to move outward and forward; that is, the door body 30 opens from G5 to G max During the opening and closing process, the door body 30 has a tendency to move outward and forward relative to the box body 10.

[0187] In summary, the door 30 is opened from the closed state to the G max During the whole process, the door body 30 has a tendency to move outward and forward relative to the box body 10.

[0188] It should be noted that in this embodiment, only some angles in the range of 0 to 90 degrees, 90 degrees, 90 degrees to G max Some angles within the range are used as representatives to illustrate the overall movement trend, which can represent the movement trend within the corresponding range and can illustrate that the hinge assembly with the above trajectory characteristics of the present invention can enable the door body 30 to move outward and forward during the entire opening process.

[0189] Combine Figure 3 ,like Figure 28-Figure 29 As shown, when the door bodies 30 are in the closed state, the side sealing strips 3 on the two door bodies 30 are in close contact; under the setting of the hinge assembly of this embodiment, when the door bodies 30 are opened, the opened door body 30 drives the side sealing strip 3 on it to move outward, and the moving side sealing strip 3 is quickly separated from the side sealing strip 3 on the other door body 30 (see Figure 28 and Figure 29 The change of the area within the dotted box) effectively avoids the movement of the other door 30 from opening, thereby effectively reducing the loss of cooling capacity; at the same time, the door 30 of the refrigerator having the hinge assembly of the present application keeps moving outward during the opening process, which can effectively reduce the obstruction of the door 30 to the access port; it also effectively avoids the interference of the door 30 with the cabinet 10 during the opening process.

[0190] Combined with the movement of the door body 30 during the opening process, the door body 30 is opened from the closed state to the G maxDuring the entire process, the door body 30 rotates around a dynamically changing point (the movement trend of the center point I of the axis is I0→I1→I2→I3→I4→I5→I6) that moves relative to the door body 30 toward the door side wall 32; wherein, the center point I of the axis first moves toward the door rear wall 33 and then moves away from the door rear wall 33 relative to the door body 30, thereby causing the door body 30 to move outward and forward relative to the box body 10 throughout the entire process.

[0191] In combination with the above-mentioned description of the opening process of the door body 30, next, the position of the door body 30 rotating from the previous state around the midpoint of the axial line segment PQ to the adjacent subsequent state is compared with the position of the door body 30 in the above-mentioned adjacent subsequent state in the present invention to illustrate the movement trend of the door body 30 relative to its previous state during the opening process.

[0192] Combine Figure 30-Figure 35 As shown, 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 next state (the door body 30 is represented by a dotted line). During this movement, the rotation center of the door body 30 is fixed relative to the door body 30. Then, under this movement trend, when the door body 30 is opened, the position of the first side edge W relative to the hinge is at W'; the position of the second side edge N relative to the hinge is at N'; and the position of the side sealing edge F relative to the hinge is at F'. Figure 30 In the figure, the position of the door body 30 indicated by the dotted line is the position reached when the door body 30 is simply rotated to G1 around the midpoint I of the axis line segment PQ; the position of the door body 30 indicated by the solid line is the position reached when it is rotated and opened to G1 in the manner of the present invention; Figure 31 In the figure, the position of the door body 30 indicated by the dotted line is the position reached when the door body 30 is opened to G1 by the rotation method of the present invention and then simply rotates to G2 with the axis center point I of the door body 30 at G1 (the axis center point I of the previous state) as the center; the position of the door body 30 indicated by the solid line is the position reached when the door body 30 is rotated to G2 by the setting method of the present invention; the same reason 32- Figure 35 Schematic comparison of two different opening methods for each opening angle.

[0193] Comparing the arrangement of the present invention (the door body 30 rotates around a point that maintains dynamic changes relative to the door body 30 throughout the entire process) with the simple rotation of the door body 30 around the center point I of the axis in its previous state, it can be seen that:

[0194] The door 30 opens from the closed state to G max During the process, in this application, the first side edge position W is located on the side of W' away from the second body side wall and the access opening; the second side edge position N is located on the side of N' away from the second body side wall and the access opening; the side sealing edge position F is located on the side of F' away from the second body side wall and the access opening. That is, the door body 30 is opened from the closed state to G maxDuring the process, the door body 30 has a tendency to move outward and forward. It should be noted that the comparison between the position of the door body 30 in the current state of the present invention and the position of the door body 30 when it is assumed to be simply rotated around the axis center point I from the previous state of the present invention to the opening angle of the door body 30 of the present invention can represent the movement trend of the door body 30 relative to the previous state during the opening process of the door body 30 of the present invention. Only selected angles are used for comparison and illustration to illustrate the movement trend of the door body 30 when it is opened.

[0195] In some embodiments of the present application, the arrangement of the hinge assembly having the above trajectory characteristics enables the door body 30 to move in the second direction along the door side wall 32 in the early stage (0° to 90°) of the opening process. It is large enough to ensure that the speed of the door body 30 moving outward and forward relative to the box body 10 in the previous stage before opening is large, so that the final displacement of the door body 30 is an outward and forward trend, and has a larger outward displacement, so as to increase the rate of outward movement of the door body 30 during the opening process, ensuring the outward movement rate of the door body 30 in the initial stage of opening, and being able to speed up the outward movement rate of the side sealing strip 3 set on the opened door body 30, thereby accelerating the separation of the sealing strips 3 on both sides, and effectively preventing the opened door body 30 from driving the other door body 30 to open.

[0196] In some embodiments of the present application, the door 30 is opened from 90° to G max During the process, in the projection of the plane where the top wall of the box is located, the distance between the guide center axis P and the center of mass plane C is recorded as the first distance J. The first distance J is any value between 0 and 2 mm. That is, the door body 30 is opened from 90° to G max During the opening stage, the guiding center axis P is always located near the centroid plane C, which effectively enhances the opening stability of the door body 30 and ensures that the door body 30 can maintain a stable state when it is opened to a large angle.

[0197] In some embodiments of the present application, Figure 6-Figure 13 As shown, in this embodiment, a first reference plane M1 and a second reference plane M2 are further defined. Figure 13 As shown, the first reference plane M1 is a plane parallel to the base plane M0 and perpendicular to the plane where the access opening is located. The first reference plane M1 is the mid-plane between the first and second body side walls; that is, the first reference plane M1 is parallel to the first body side wall and its distance from the first body side wall is equal to its distance from the second body side wall. The second reference plane M2 is the plane where the access opening of the storage compartment is located. The first and second reference planes M1, M2 do not move with the opening of the door 30 relative to the cabinet 10 and remain stationary relative to the cabinet 10.

[0198] During the opening of the door 30, the first side edge W moves as the door 30 opens, and its motion trajectory is recorded as the first side edge trajectory. 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 toward the second reference plane M2, and then moves toward the first reference plane M1 and the second reference plane M2.

[0199] As a configurable method, when the door body 30 is opened 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 of the top wall of the box body 10, the door body 30 is opened from G2 to G max During the process, the first side edge W moves along the arc. That is, in the projection of the top wall of the box body 10, the door body 30 opens from G2 to G max During the movement, 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, so that timely adjustments can be made to achieve high-precision matching between the first hinge member and the second hinge member on the door body 30, meeting the complex movement requirements of finely controlling the door body 30 to complete rotation and outward movement.

[0200] As a setting method, when the distance between the first side edge W and the first reference plane M1 is the largest, the door body 30 is opened to G``, wherein G``>G2. That is, the door body 30 is opened 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.

[0201] During the opening of the door 30, the second side edge N moves as the door 30 opens, and its motion trajectory is recorded as the second side edge trajectory. In the projection of the top wall of the box 10, during the opening of the door 30, the second side edge N first moves toward the first reference plane M1 and the second reference plane M2, and then moves toward the first reference plane M1 and away from the second reference plane M2.

[0202] As a setting method, in the projection of the top wall of the box body 10, the door body 30 is opened from G2 to G max During the process, the second side edge N moves along the arc. That is, in the projection of the top wall of the box body 10, the door body 30 opens from G2 to G maxDuring this process, the trajectory formed by the movement of the second side edge N is an arc. Specifically, when the door body 30 is opened to G2, the guide center axis P moves to the midpoint of the guide trajectory line S—the second guide point P2. The hinge assembly arrangement with the above trajectory characteristics can effectively detect assembly accuracy and machining accuracy after the door body 30 and the box body 10 are installed, allowing for timely adjustments to achieve high-precision coordination between the first and second hinge members on the door body 30, meeting the complex motion requirements of finely controlling the door body 30 to complete rotation and outward movement.

[0203] As a configurable method, when the door body 30 is opened to G1, the distance between the second side edge N and the second reference plane M2 is the smallest; wherein G1<G2; that is, when the door body 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 keeps increasing.

[0204] During the opening of the door 30, the side sealing ridge F moves as the door 30 opens, and its motion trajectory is recorded as the side sealing ridge trajectory line. In the projection of the top wall of the cabinet 10, during the opening of the door 30, the side sealing ridge F first moves toward the first reference plane M1 and the second reference plane M2, then moves toward 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. The above arrangement allows the side sealing ridge F to move outward in the later stages of the door 30 opening, thereby preventing the door 30 from blocking the access opening due to the side sealing ridge F moving inward in the early stages of the door 30 opening, thereby increasing the storage drawer's spatial utilization of the storage compartment's lateral dimensions.

[0205] In this embodiment, the door 30 is opened to G F When the side sealing edge F is at its maximum distance from the side wall of the first body, F The side sealing edge F at the time of opening is defined as a third reference plane M3, and the third reference plane M3 does not move during the opening process of the door body 30 relative to the box body 10, and is a reference plane that remains stationary relative to the box body 10. As a settable method, GF belongs to any value between 90° and 100°. The above limitation maximizes the distance between the side sealing edge F and the side wall of the first body when the door body 30 is opened to approximately 90°, so that in the later stage of the opening of the door body 30, the side sealing edge F has a larger opening stroke to move outward, thereby more compensating for the inward displacement of the side sealing edge F in the early stage of the opening of the door body 30, so as to minimize the obstruction of the door body 30 to the take-in and put-out opening.

[0206] 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 entirely on the side of the third reference plane M3 close to the side wall of the first body.

[0207] As a configurable method, when the door body 30 is opened to the maximum angle G max During the process of opening the door body 30, the door sealing edge F is located between the second side edge N and the third reference plane M3 (including the third reference plane M3), so as to prevent the door body 30 from opening too much and causing the second side edge N to become the main factor affecting the horizontal dimension of the access opening. That is, during the process of opening the door body 30, the second side edge N is always located outside the side sealing edge F. That is, when the door body 30 is opened by G F To the maximum angle G max During the opening process, as the opening angle of the door body 30 increases, the obstruction of the access opening by the door seal 20 gradually decreases, and the obstruction of the access opening by the door body 30 gradually decreases. As described above, in the present invention, the door body 30 moves outward throughout the entire process, which can reduce the lateral obstruction of the access opening by the door body 30. In the later stage of opening the door body 30, the side sealing edge F moves toward the direction close to the reference plane M0, and the second side edge N is always located on the side of the side sealing edge F close to the reference plane M0, further reducing the lateral obstruction of the access opening by the door body 30, thereby increasing the lateral size of the drawer installed in the storage room, increasing the space utilization rate of the storage room, and making it easier for users to take and put items stored on the door shelf.

[0208] As an practicable method, when the door body 30 is opened to the maximum angle G max When the second side edge N is located on the side of the side sealing edge F away from the third reference plane M3 in the projection of the plane where the top wall of the box body 10 is located, the second side edge N is located, and the angle between the side sealing edge F and the straight line FN where the second side edge N is located and the third reference plane M3 is a value between 0° and 8°. As a setting method, in the projection of the plane where the top wall of the box body 10 is located, the straight line FN where the side sealing edge F and the second side edge N are located is approximately parallel to the third reference plane M3; that is, when the door body 30 is opened to the maximum angle G max When the side seal edge F and the straight line FN on which the second side edge N lies are located, the angle between the third reference plane M3 is within a range of 0° to 3°. The above definition minimizes the obstruction of the access opening by the side seal edge F while effectively preventing the rotation of the second side edge N from increasing the lateral obstruction of the access opening by the door body 30.

[0209] The angle between the plane of the surface of the door seal 20 away from the door side wall 31 and the first body side wall is recorded as the first angle λ. The door body 30 continues to move from 90° to the maximum angle G max During the opening process, the first 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 toward the side close to the reference plane M0.

[0210] In this embodiment, in the projection of the top wall of the box body 10, the door body 30 is opened from G2 to G maxDuring the process, the side sealing edge F moves along the arc. That is, in the projection of the top wall of the box body 10, the door body 30 opens from G2 to G max During this process, the trajectory formed by the movement of the side sealing edge F is an arc. Specifically, when the door body 30 is opened to G2, the guide center axis P moves to the midpoint of the guide trajectory line S—the second guide point P2. The hinge assembly configuration with the above trajectory characteristics can effectively detect the assembly accuracy and machining precision requirements after the door body 30 and the box body 10 are installed. This allows for timely adjustments to achieve high-precision coordination between the first and second hinge components on the door body 30, meeting the complex motion requirements of finely controlling the door body 30 to complete rotation and outward movement.

[0211] As a configurable method, when the door body 30 is opened to G'0, the distance between the side sealing edge F and the second reference plane M2 is the smallest; wherein, G'0<G1<G2; that is, when the door body 30 is opened from G2 to G max During this process, the distance between the side seal edge F and the second reference plane M2 continues to increase. Furthermore, with the above-described motion trajectory of the side seal edge F, the angular range of the side seal edge F's approach to the second reference plane M2 is small, effectively limiting the distance the side seal edge F approaches the second reference plane M2 when the door body 30 is opened, thereby preventing the side seal edge F from interfering with the cabinet 10 and affecting the opening of the door body 30.

[0212] Combined with the movement of the first side edge w, the second side edge N and the side sealing edge F, the door body 30 is opened from G2 to G max In the process, the center of the arc-shaped motion trajectory of the first side edge w is recorded as the center of the first side edge O C1 , whose radius is recorded as the first side edge radius R C1 The center of the arc-shaped motion trajectory of the second side edge N is recorded as the center of the second side edge O C2 , its radius is recorded as the second side edge radius R C2 The center of the arc-shaped motion trajectory of the side sealing edge F is recorded as the center of the side sealing edge O F , its radius is recorded as the side sealing edge radius R F .

[0213] In some embodiments of the present application, R C1 <R e2 <R F As another possible setting method, in the projection of the top wall of the box body 10 in the plane where the first side edge circle center O C1 Located on the side of the first hinge axis 41 close to the reference plane M0; the center of the second side edge O C2 Located at the center of the first side edge O C1 A side away from the first hinge axis 41 and the access opening; the center of the side sealing edge O F Located at the center of the second side edge O C2A side away from the first hinge axis 41 and close to the access opening, and the side sealing edge center O F Located at the center of the first side edge O C1 Away from the side of the take-and-put port. That is, the center of the first side edge O C1 , the center of the second side edge O C2 、Sealing edge center O F The distance between the first side edge and the reference plane M0 decreases successively; C1 、Sealing edge center O F、 The center of the second side edge O C2 The distances from the second reference plane M2 increase successively.

[0214] Specifically, the center of the first side edge O C1 The distance from the first reference plane M1 is denoted as H1, and the center of the second side edge O C2 The distance from the first reference plane M1 is recorded as H2, and the center of the edge circle O F The distance from the first reference plane M1 is recorded as H3; wherein, H1<H2<H3.

[0215] The center of the first side edge O C1 The distance from the second reference plane M2 is recorded as Z1, and the center of the second side edge O C2 The distance Z2 from the second reference plane M2; the center of the sealing edge O F The distance between the second reference plane M2 is recorded as z3; wherein, z1<Z3<z2.

[0216] As a configurable method, H1-H3 is any value between 8mm and 11mm; Z2-Z1 is any value between 10mm and 13mm; that is, the center of the first side edge O C1 , the center of the second side edge O C2 、Sealing edge center O F The hinge components are concentrated in a small area and are spaced relatively close to each other. The hinge components with the above trajectory characteristics have a more compact structure.

[0217] As an practicable method, the straight line where the center axes of the first hinge axis 41 and the second hinge axis 42 are located is recorded as the double axis PQ. C1 、Sealing edge center O F Located on the side of the double axis PQ close to the second reference plane M2, the center of the second side edge O C2 Located on the side of the double axis PQ away from the second reference plane M2. F The distance from the biaxial line PQ is denoted as Z', where Z' is any value between 0 mm and 2 mm. The hinge assembly having the above trajectory characteristics has a more compact structure.

[0218] Passing through the center O of the first side edgeC1 The plane parallel to the second reference plane M2 is recorded as the first plane E1; passing through the center of the second side edge O C2 The plane parallel to the second reference plane M2 is designated as the second plane E2. The third plane E3 lies 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 of the top wall of the box 10, the distance between the biaxial line PQ and the third plane E3 is anywhere between 0 and 1 mm. A hinge assembly with these trajectory characteristics is more compact.

[0219] In some embodiments of the present application, the first side edge center O C1 The intersection of the straight line perpendicular to the second plane E2 and the second plane is marked as point U. As an practicable method, the third plane E3 and the line segment O C1 The intersection point of U is line segment O C1 The midpoint T of U. It can be set that when the door body 30 is opened to G4 (when the guide center axis Q moves to the extension line of the guide track line S), the radius O of the arc track of the second side edge N is C2 N4 and line segment O C1 The intersection point of U is line segment O C1 The midpoint T of U. That is, the line segment O C1 U, third plane E3, O C2 N4 intersects line segment O C1 The midpoint T of U. The hinge assembly arrangement with the above trajectory characteristics makes the arrangement of the present invention detectable, and can effectively detect the assembly or processing accuracy after the door body 30 and the box body 10 are installed together, ensuring the accuracy requirements and meeting the complex movement requirements of finely controlling the door body 30 to complete the rotation and move outward.

[0220] It should be noted that the "arc" involved in the present invention includes the standard arc in the standard mathematical definition (the part between any two points on the circle), and also includes a curve that deviates slightly from the standard arc in the standard mathematical definition due to processing errors, micro-deformation of components, micro-wear, reserved gaps, etc., or its own performance, but still has arc characteristics (such as deviation around the arc).

[0221] In some embodiments of the present 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 guide groove formed is also a smooth curve; that is, the guide trajectory line K and the curved groove wall of the guide groove formed are free of sharp points, thereby enabling the second hinge shaft 42 to move smoothly and fluently under the guidance of the guide portion 60, thereby ensuring smoother opening of the door body 30. The guide groove defined by the above guide portion 60 to guide the movement of the second hinge shaft 42 is smooth and free of sharp points, which makes the second hinge shaft 42 move smoothly relative to the trajectory groove, thereby extending the service life of the hinge shaft. Moreover, during the opening process of the door body 30, the second hinge shaft 42 moves continuously and uninterruptedly throughout the entire movement relative to the guide portion 60.

[0222] 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 a roller follower cam mechanism, the size of the roller radius often affects the shape of the actual cam profile curve, so the roller radius must be reasonably selected.

[0223] Where, ρ: theoretical contour radius; ρ′: actual contour radius; ρ min : The minimum curvature radius of the convex part of the theoretical contour curve (i.e. the curvature radius of the sharpest part); r T : Roller radius.

[0224] like Figure 36 As shown in a), when the cam theoretical profile curve is a concave curve, ρ′=ρ+r T , so r T The size of is not limited by ρ. At this time, regardless of the roller radius, the cam working profile is always a smooth curve.

[0225] When the cam theoretical profile curve is a convex curve, then ρ=ρ′-r T :

[0226] (1) Figure 36 As shown in b), when ρ min >r T ,ρ′>0, then the actual contour curve is a smooth curve;

[0227] (2) 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 easily change the movement law of the cam, and cannot be used;

[0228] (3) Figure 36 As shown in (d), when ρ min <r TWhen ρ′<0, the actual contour curve will cross, and the actual contour curve above the intersection will be cut off during processing, resulting in the inability to realize the motion law of this part.

[0229] Therefore, in order to make the cam profile neither sharp nor intersecting at any position, the roller radius r T Must be smaller than the minimum curvature radius ρ of the convex part of the theoretical contour curve min , generally choose r T ≤0.8ρ min If this requirement cannot be met, increase the cam base circle radius and redesign the cam profile curve.

[0230] Therefore, in this embodiment, the guide trajectory line K corresponds to the cam theoretical profile curve of the guide portion 60. In this embodiment, the cam theoretical profile curve is an outward convex curve (the guide groove bulges away from the door front wall); the curved groove wall of the guide portion 60 close to the door front wall 31 is the actual profile curve; the radius of the second hinge axis 42 also satisfies r T The size of satisfies the setting (1) (ρ min >r T ) to ensure that the curved groove wall (actual contour curve) of the guide portion 60 near the door front wall 31 is a smooth curve, which not only allows the second hinge shaft 42 to move smoothly, but also reduces the wear of the guide portion 60. That is, the guide portion 60 is essentially configured as a cam. The cam theoretical contour curve in this embodiment is configured as a convex curve, which can effectively avoid the defect of easy wear caused by the concave structure. In summary, in this embodiment, the guide trajectory line K is configured as a convex cam curve, and there is ρ min >r T As another possible implementation, r T ≤0.8ρ min .

[0231] In some embodiments of the present application, the angle bisector of the angle formed by the door front wall 31 and the door side wall 32 is recorded as the angle bisector plane V; in this embodiment, the dihedral angle formed by the plane where the door front wall 31 is located and the plane where the door side wall 32 is located is the first angle σ=90°; during the opening process of the door body 30 relative to the box body 10, the angle bisector plane V moves with the door body 30 relative to the box body 10; that is, during the opening process of the door body 30, the angle bisector plane V remains stationary relative to the door body 30.

[0232] It can be set that the second guide point P2 is located on the angle bisector plane V, that is, the midpoint of the starting guide point P0 and the sixth guide point P6 is located on the angle bisector plane V. The above setting facilitates the detection of whether the first hinge axis 41 and the second hinge axis 42 meet the processing accuracy requirements after they are formed on the door body 30, and can detect whether the first door axis 51 and the guide part 60 are assembled in place according to the positions of the first door axis 51 and the guide part 60 in three states: the door body 30 is closed, opened to the maximum angle, and when the first hinge axis 41 moves to the second guide point P2, thereby achieving high-precision matching to meet the complex movement requirements of finely controlling the door body 30 to complete the rotation and outward movement.

[0233] Example 2

[0234] The principle of the second embodiment is the same as that of the first embodiment. The difference between the second embodiment and the first embodiment is that the guide track line K in the second embodiment is formed by connecting an elliptical arc and a circular arc. Figure 37 As shown, specifically, the elliptical arc is located on the side of the circular arc away from the door side wall 32. The connection point between the elliptical arc and the circular arc is recorded 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 track line K J When the guide center axis P moves to point P of the guide trajectory line S J At this time, the midpoint of the guide center axis P and the guide center axis Q is located at I relative to the door body 30. J , the opening angle of the door body 30 is G J .

[0235] In some embodiments of the present application, when the door body 30 is opened to 90 degrees, the guide center axis Q moves to the connection point of the elliptical arc and the circular arc - the first connection point Q J .

[0236] In some embodiments of the present application, the connection point between the elliptical arc and the circular arc (the first connection point Q J ) is on the extension line of the guide trajectory line S.

[0237] In some embodiments of the present application, the elliptical arc and the circular arc are connected at a point (the first connection point Q J ) is tangent; that is, the first connection point Q J It is the tangent connection point between the elliptical arc and the circular arc.

[0238] In some embodiments of the present application, the ellipse where the elliptical arc is located is inscribed in the circle where the circular arc is located.

[0239] In some embodiments of the present application, the major axis of the ellipse in which the elliptical arc is located is parallel to the Y axis, and the minor axis is parallel to the X axis.

[0240] Specifically, in the two-dimensional coordinate system XOY that is stationary relative to the door body 30 in the first embodiment, the parametric equations of the elliptical arc and the circular arc are as follows:

[0241] The parametric equation of the ellipse where the elliptical arc is located is: x = x1 + a1 cos θ1, y = y1 + b1 sin θ1; 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 recorded as O t ;

[0242] The parametric equations of the circle where the arc is located are: x = x2 + r2 cos θ2, y = y2 + r2 sin θ2; (x2, y2) are the coordinates of the center of the circle, and the center of the arc is recorded as O y ; r2 is its radius, θ2 is the parameter, which is the rotation angle, and (x, y) is the coordinate of the passing point;

[0243] In some embodiments of the present application, the center of the elliptical arc O t and the arc's center O y coincide with each other; that is, x1=x2, y1=y2.

[0244] In some embodiments of the present application, the guide trajectory line S is located on the major axis of the ellipse where the elliptical arc is located; as a configurable method, the starting guide position P0 of the guide trajectory line S is aligned with the center O of the elliptical arc. t coincide.

[0245] The second hinge member with the above-described trajectory characteristics is configured such that the guide trajectory S is a straight line parallel to the Y-axis, and the guide trajectory K is formed by connecting an elliptical arc and a circular arc, both of which are regular curves. In this embodiment, the guide portion 50 guides the movement of the first hinge axis 41, while the guide portion 60 guides the movement of the second hinge axis 42, enhancing the smoothness and efficiency of their relative motion. Furthermore, the guide portions 50 and 60 of the present invention are arranged more compactly, enabling them to be formed on a thin door body 30, thereby achieving precise control of the door body 30.

[0246] Combine Figure 37-Figure 38 As shown, the setting of each guide point on the guide trajectory line S and each guide point on the guide trajectory line K in Example 1 corresponds to the setting of each guide point on the guide trajectory line S and the guide trajectory line K; the end of the elliptical arc away from the door rear wall 33 has a starting guide point Q0, and the end of the circular arc close to the door side wall 32 has a sixth guide point Q6.

[0247] In combination with the first embodiment, the connection point between the elliptical arc and the circular arc, the first connection point Q, can be set in this embodiment. J Located on the extension line of the guide trajectory line S, that is, the first connection point Q J Coincident with the fourth guide point Q4.

[0248] As in the first embodiment, the straight line between the starting guide point Q0 and the starting 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 QJ , the fourth guide point Q4, and the fifth guide point Q5 coincide; that is, G J =G4=G5. That is, the fourth guide point Q4 (fifth guide point Q5 / first connection point Q J ) is located on the extension line of the guide trajectory line S and is the point closest to the guide trajectory line K and the door rear wall 33.

[0249] The door body 30 is opened in two stages according to the movement of the second hinge shaft 42 relative to the guide portion 60 as in the first embodiment.

[0250] In the first stage, during the process of the door body 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 to the side close to the door rear wall 33 along a straight line to the fifth guide point P5 (the fourth guide point P4 or P5). J The guide center axis Q moves along the elliptical arc from the starting guide point Q0 toward the direction close to the door side wall 32 and the door rear wall 33 to the fifth guide point Q5 (the fourth guide point Q4 or the first connection point Q J ).

[0251] In the second stage, the door 30 is opened from G5 to G max During the process, the central axis P is guided along the guide trajectory line S from the fifth guide point P5 (the fourth guide point P4 or P J ) moves in a straight line to the side close to the door rear wall 33 to the sixth guide point P6. The guide center axis Q moves along the arc with a radius of r2 from the fifth guide point Q5 (the fourth guide point Q4 or the first connection point Q J ) moves toward the door side wall 32 and away from the door rear wall 33 to the sixth guide point Q6.

[0252] In summary, during the entire process of opening the door body 30, the second hinge shaft 42 moves unidirectionally along an elliptical arc in the first stage of its movement, toward the door sidewalls 32 and the door rear wall 33. In the second stage of its movement, the second hinge shaft 42 moves unidirectionally along a circular arc, toward the door sidewalls 32 and away from the door rear wall 32. The arrangement of this embodiment allows the second hinge shaft 42 to move along a regular elliptical or circular arc throughout its entire movement. In conjunction with the linear movement of the first hinge shaft 41 parallel to the door sidewalls 32, the door body 30 opens smoothly and stably, facilitating precise control of complex movements of the door body 30.

[0253] like Figures 39-45 As shown, in this embodiment, when the door body 30 is opened to G5', the guide center axis P moves to P5' of the guide track line S, and the guide center axis Q moves to Q5' of the guide track 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'.

[0254] Among them, when the door body 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 Example 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``.

[0255] In this embodiment, G'=G2; that is, when the door body 30 is opened, the guide center axis P moves to the midpoint of the guide trajectory line S, and the guide center axis Q moves to the midpoint of the elliptical arc of the guide trajectory line K.

[0256] Combine Figures 39-45 As shown, the comparison method is the same as that in the first embodiment; 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 next state (the door body 30 is represented by the dotted line); then under this movement trend, when the door body 30 is opened, the position of the first side edge W relative to the hinge is at W'; the position of the second side edge N relative to the hinge is at N'; the position of the side sealing edge F relative to the hinge is at F'. Figure 39 In the figure, the position of the door body 30 indicated by the dotted line is the position reached when the door body 30 is simply rotated to G1 around the midpoint I of the axis line segment PQ; the position of the door body 30 indicated by the solid line is the position reached when it is rotated and opened to G1 in the manner of the present invention; Figure 40 In the embodiment, the position of the door body 30 indicated by the dotted line is the position reached when the door body 30 is opened to G1 by the rotation method of the present invention and then simply rotates to G2 with the axis center point I of the door body 30 at G1 (the axis center point I of the previous state) as the center; the position of the door body 30 indicated by the solid line is the position reached when the door body 30 is rotated to G2 by the setting method of the present invention; the same reason 41- Figure 45 Schematic comparison of two different opening methods for each opening angle.

[0257] Comparing the arrangement of the present invention with the simple rotation of the door body 30 around the axis center point I in the previous state, it can be seen that:

[0258] The door 30 opens from the closed state to G max During the process, in this application, the first side edge position W is located on the side of W' away from the second body side wall and the access opening; the second side edge position N is located on the side of N' away from the second body side wall and the access opening; the side sealing edge position F is located on the side of F' away from the second body side wall and the access opening. That is, the door body 30 is opened from the closed state to G maxDuring the process, the door body 30 has a tendency to move outward and forward. As in the first embodiment, it should be noted that the comparison between the position of the door body 30 in the current state of the present invention and the position of the door body 30 when it is assumed to be simply rotated around the axis center point I from the previous state of the present invention to the opening angle of the door body 30 of the present invention can represent the movement trend of the door body 30 relative to the previous state during the opening process of the door body 30 of the present invention. Only selected angles are used for comparison and illustration to illustrate the movement trend of the door body 30 when it is opened.

[0259] In this embodiment, the first hinge shaft 41 first makes an elliptical arc motion and then a circular arc motion relative to the guide portion 50 having a center trajectory line connected by an elliptical arc and a circular arc, and the second hinge shaft makes a linear motion relative to the guide portion 60, so that the door body 30 can move smoothly outward during the opening process, so that the door body 30 drives the side sealing strip 3 thereon to move outward when it is opened, so that the side sealing strip 3 on the opened door body 30 can be quickly separated 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, so as to avoid interference between the side sealing strips 3 installed on the two opposite door bodies 30 when the door body 30 is opened, thereby avoiding driving the other door body 30 to open when only one of the two door bodies 30 is opened, effectively avoiding the increase in the opening area of ​​the access port and reducing the amount of cold overflow.

[0260] In this embodiment, the movement of the side sealing edge F is different from that in the first embodiment; Figure 46 As shown, specifically, the door body 30 is opened from the closed state to the maximum angle G max During the process, the side sealing edge F first moves toward the first reference plane M1 and away from the second reference plane M2, and then moves toward the direction away from the first reference plane M1 and the second reference plane M2;

[0261] As in the first embodiment, the door 30 is opened to G F When the side sealing edge F is at the minimum distance from the first reference plane M1; after the door body 30 is opened to G F The side sealing edge F when the door is opened and the plane parallel to the first reference plane M1 is defined as the third reference plane M3. The third reference plane M3 remains stationary relative to the box body during the opening process of the door body relative to the box body.

[0262] In this embodiment, when the door is opened to the maximum angle G max When , in the projection of the plane where the top wall of the box is located, 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 where the side sealing edge F and the second side edge N are located and the third reference plane M3 is any value between 0° and 3°.

[0263] In this embodiment, during the opening process of the door body 30 , the movement principle of the first hinge shaft 41 relative to the guide portion 50 and the second hinge shaft relative to the guide portion 60 are the same as those in the first embodiment, and will not be repeated here.

[0264] It should be noted that the "elliptical arc" involved in the present invention includes the standard elliptical arc in the standard mathematical definition (the part between any two points on the ellipse), and also includes a curve that deviates slightly from the standard elliptical arc in the standard mathematical definition due to processing errors, micro-deformation of components, micro-wear, reserved gaps, etc., or its own performance, but still has the characteristics of an elliptical arc (such as the deviation around the elliptical arc).

[0265] Example 3

[0266] The principle of this embodiment is the same as that of the second embodiment. The main difference is that in this embodiment, the center of the elliptical arc O t and the arc's center O y Not overlapping; such as Figure 47 As shown, in this embodiment, the connection point between the elliptical arc and the circular arc (the first connection point Q J ) is located on the side of the straight line where the guide trajectory line S is located away from the door side wall 32.

[0267] 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 process of the door body 30, the guide center axis Q moves to the first connection point Q J When the guide center axis P moves to point P of the guide trajectory line S J The midpoint of the guide center axis P and the guide center axis Q is located at I relative to the door body 30. J , the opening angle of the door body 30 is G J .

[0268] In combination with the first and second embodiments, in this embodiment, during the opening process of the door body 30, the movement of the first hinge shaft 41 relative to the guide portion 50 and the movement of the second hinge shaft 42 relative to the guide portion 60 are as follows:

[0269] The first stage (the process of the door body 30 opening from the closed state to G5) is divided into a first segment and a second segment according to the motion trajectory of the first hinge shaft 41;

[0270] Specifically, in the first section, the door body 30 is opened from the closed state to the G J During the process, the central axis P is guided to move along the guide trajectory line S from the starting guide point P0 to the side close to the door rear wall 33 along a straight line to point P J The guide center axis Q moves along the elliptical arc from the starting guide point Q0 toward the direction close to the door side wall 32 and the door rear wall 33 to the first connection point Q J .

[0271] The second segment, the door body 30 is made of G J During the process of opening to G5, the guide center axis P is guided along the guide trajectory line S from point P J The guide center axis Q moves along a straight line to the side close to the door rear wall 33 to the fifth guide point P5. The guide center axis Q is connected to the first connection point Q along the arc with a radius of r2. J Move toward the direction approaching the door side wall 32 and the door rear wall 33 to the fifth guide point Q5.

[0272] The second stage of opening of the door body 30 in this embodiment is the same as that in Example 2; it should be pointed out that, in this embodiment, during the opening process of the door body 30 in the second stage, the arc motion trajectory of the second hinge axis 42 with a radius of r2 is cocircular with the arc motion trajectory of the second hinge axis 42 with a radius of r2 in the second segment.

[0273] In this embodiment, the first hinge shaft 41 first makes an elliptical arc motion and then a circular arc motion relative to the guide portion 50 having a center trajectory line connected by an elliptical arc and a circular arc, and the second hinge shaft makes a linear motion relative to the guide portion 60, so that the door body 30 can move smoothly outward during the opening process, so that the door body 30 drives the side sealing strip 3 thereon to move outward when it is opened, so that the side sealing strip 3 on the opened door body 30 can be quickly separated 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, so as to avoid interference between the side sealing strips 3 installed on the two opposite door bodies 30 when the door body 30 is opened, thereby avoiding driving the other door body 30 to open when only one of the two door bodies 30 is opened, effectively avoiding the increase in the opening area of ​​the access port and reducing the amount of cold overflow.

[0274] In this embodiment, during the opening process of the door body 30 , the movement principle of the first hinge shaft 41 relative to the guide portion 50 and the second hinge shaft relative to the guide portion 60 are the same as those in the first embodiment, and will not be repeated here.

[0275] Example 4

[0276] The principle of this embodiment is the same as that of the first embodiment, with the main difference being that in this embodiment, the guide track line K is formed by connecting multiple circular arcs tangentially.

[0277] Specifically, such as Figure 48 As shown, in this embodiment, the guide trajectory K includes a first trajectory arc, a second trajectory arc, and a third trajectory arc that are circular and sequentially connected tangentially. The second trajectory arc is connected to the end of the first trajectory arc that is close to the door rear wall 33, and the third trajectory arc is connected to the end of the second trajectory arc that is away from the first trajectory arc.

[0278] Specifically, in the two-dimensional coordinate system XOY that is stationary relative to the door body 30 in the first embodiment, the parametric equations of the first trajectory arc, the second trajectory arc, and the third trajectory arc are as follows:

[0279] The parametric equation of the circle where the first trajectory arc lies is x=A1+R1 cosu1, y=B1+R1sinu1; (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 the parameter, and (x, y) are the coordinates of the passing point;

[0280] The standard equation of the circle where the second trajectory arc lies is x = A2 + R2 cosu2, y = B2 + R2sinu2; (A2, B2) are the coordinates of the center of the circle, recorded as the second center O2; R2 is the radius of the second circle, u2 is the parameter, and (x, y) are the coordinates of the passing point;

[0281] The standard equation of the circle where the third trajectory arc lies is x=A3+R3 cosu3, y=B3+R3sinu3; (A3, B3) are the coordinates of the center of the circle, recorded as the third circle center O3; R3 is the radius of the third circle, u3 is the parameter, and (x, y) is the coordinates of the passing point.

[0282] That is, the center of the circle where the first trajectory arc is located is recorded as the first center O1; the center of the circle where the second trajectory arc is located is recorded as the second center O2; and the center of the circle where the third trajectory arc is located is recorded as the third center O3.

[0283] In some embodiments of the present application, the first center O1 is located on the side of the first trajectory arc close to the door side wall 32, the second center O2 is located on the side of the second trajectory arc close to the door side wall 32, and the third center O3 is located on the side of the third trajectory arc close to the door front wall 31.

[0284] Among them, the first trajectory arc extends from the end close to the front wall 31 of the door toward the direction close to the door side wall 32 and the door rear wall 33, the second trajectory arc extends from the end connected to the first trajectory arc toward the direction close to the door side wall 32 and the door rear wall 33, and the third trajectory arc extends from the end connected to the second trajectory arc first toward the direction close to the door side wall 32 and the door rear wall 33, and then extends toward the direction close to the door side wall 32 and away from the door rear wall 33.

[0285] In some embodiments of the present application, R3<R2<R1; that is, the radius of the circle where the first trajectory arc is located is the largest, the radius of the circle where the second trajectory arc is located is the second largest, and the radius of the circle where the third trajectory arc is located is the smallest, so that the guide trajectory line K can complete a large-angle rotation and open, and can move outward.

[0286] In some embodiments of the present application, the central angle of the circle O1 corresponding to the first trajectory arc is recorded as the first central angle α1; the central angle of the circle O2 corresponding to the second trajectory arc is recorded as the second central angle α2; and the central angle of the circle O3 corresponding to the third trajectory arc is recorded as the third central angle α3.

[0287] As a configurable method, α1, α2, and α3 are all acute angles. It can be set, where 0°<α1<α2<α3<90°; as a configurable method, α1 is any value between 14° and 18°; α2 is any value between 38° and 50°; and α3 is any value between 30° and 65°. The above settings effectively ensure that in this embodiment, when the guide trajectory line S is set as a plurality of tangentially connected circular arcs, the maximum angle that the door body 30 can open is not less than 90°, so that the rear wall 33 of the door body 30 can be displayed forward, making it convenient to take and put items.

[0288] The tangent connection point between the first and second trajectory arcs can be set as the first tangent point Q1', and the tangent connection point between the second and third trajectory arcs can be set 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 body 30 is recorded as G1'.

[0289] In this embodiment, the second tangent point Q2' is located on the extension of the guide trajectory S, i.e., 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 the guide trajectory P2', and the door body 30 opens at an angle G2'; where G2' = G4.

[0290] In combination with the first and second embodiments, in this embodiment, during the opening process of the door body 30, the movement of the first hinge shaft 41 relative to the guide portion 50 and the movement of the second hinge shaft 42 relative to the guide portion 60 are as follows:

[0291] The first stage (the process of the door body 30 opening from the closed state to G5) is divided into the first segment, the second segment and the third segment according to the motion trajectory of the first hinge axis 41;

[0292] Specifically, in the first segment, when the door body 30 opens from the closed state to G1', the guide center axis P moves linearly along the guide trajectory S from the starting guide point P0 toward the side near the door rear wall 33 to P1'. The guide center axis Q moves along the first trajectory arc from the starting guide point Q0 toward the door side wall 32 and the door rear wall 33 in a circular arc with a radius R1 to the first tangent point Q1'.

[0293] In the second segment, during the process of the door body 30 opening from G1' to G4 (G2'=G4), the guide center axis P moves linearly along the guide trajectory line S from the first tangent point Q1' toward the side close to the door 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' toward the side wall 32 and the door rear wall 33 in a circular arc with a radius of R2 to the fourth guide point Q4 (second tangent point Q2').

[0294] In the third section, during the process of the door body 30 opening from G4 (G2′=G4) to G5, the guide center axis P moves linearly along the guide trajectory S from the fourth guide point P4 toward the side near the door rear wall 33 to the fifth guide point P5. The guide center axis Q moves along the third trajectory from the fourth guide point Q4 (the second tangent point Q2′) toward the door side wall 32 and the door rear wall 33 in a circular arc with a radius R3 to the fifth guide point Q5.

[0295] In the second stage, the door 30 is opened from G5 to G max During this process, the guide center axis P moves linearly along the guide trajectory line S from the fifth guide point P5 toward the side close to the door rear wall 33 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 toward the door side wall 32 and away from the door rear wall 33 in a circular arc with a radius R3 to the sixth guide point Q6.

[0296] It should be pointed out that, in this embodiment, during the second stage of opening of the door body 30, the circular motion trajectory of the second hinge axis 42 with a radius of R3 is cocircular with the circular motion trajectory of the second hinge axis 42 with a radius of R3 in the third segment (third trajectory arc).

[0297] In some embodiments of the present application, during the opening process of the door body 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 between the first trajectory arc and the second trajectory arc; that is, the first tangent point Q1` coincides with the second guide point Q2.

[0298] In some embodiments of the present application, during the opening process of the door body 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 between 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 between 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.

[0299] In this embodiment, the first hinge shaft 41 first moves in multiple arcs relative to the guide part 50 having a center trajectory line connected by multiple arcs, and the second hinge shaft moves in a straight line relative to the guide part 60, so that the door body 30 can move smoothly outward during the opening process, so that the door body 30 drives the side sealing strip 3 thereon to move outward when it is opened, so that the side sealing strip 3 on the opened door body 30 can be quickly separated 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, so as to avoid interference between the side sealing strips 3 installed on the two opposite door bodies 30 when the door body 30 is opened, thereby avoiding that only one of the two door bodies 30 drives the other door body 30 to open, effectively avoiding the increase in the opening area of ​​the access port and reducing the amount of cold overflow.

[0300] In this embodiment, during the opening process of the door body 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 that in Example 1, and 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 those in Example 1, which will not be repeated here.

[0301] Example 5

[0302] The principle of this embodiment is the same as that of the fourth embodiment, the main difference is that Figure 49 As shown, the connection point of the second trajectory arc and the third trajectory arc in this embodiment is located on the side of the guide trajectory line S away from the door side wall 32. That is, the second tangent point Q2' is located on the side of the guide trajectory line S away from the door side wall 32.

[0303] In this embodiment, 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 body 30 is recorded as G2', wherein G4>G2'>G1'.

[0304] In conjunction with the fourth embodiment, in this embodiment, during the opening process of the door body 30, the movement of the first hinge shaft 41 relative to the guide portion 50 and the second hinge shaft 42 relative to the guide portion 60 are as follows:

[0305] Specifically, in the first segment, when the door body 30 opens from the closed state to G1', the guide center axis P moves linearly along the guide trajectory S from the starting guide point P0 toward the side near the door rear wall 33 to P1'. The guide center axis Q moves along the first trajectory arc from the starting guide point Q0 toward the door side wall 32 and the door rear wall 33 in a circular arc with a radius R1 to the first tangent point Q1'.

[0306] In the second segment, as the door body 30 opens from G1' to G2', the guide center axis P moves linearly along the guide trajectory S from P1' toward the side near the door rear wall 33 to P2'. The guide center axis Q moves along the second trajectory arc from the first tangent point Q1' toward the door side wall 32 and the door rear wall 33 in a circular arc with a radius R2 to the second tangent point Q2'.

[0307] In the third segment, during the opening of the door body 30 from G2′ to G5, the guide center axis P moves linearly along the guide trajectory S from P2′ toward the side near the door 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′ toward the door side wall 32 and the door rear wall 33, making a circular arc with a radius of R3, passing through the fourth guide point Q4 and moving to the fifth guide point Q5.

[0308] In the second stage, the door 30 is opened from G5 to G max During this process, the guide center axis P moves linearly along the guide trajectory line S from the fifth guide point P5 toward the side close to the door rear wall 33 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 toward the door side wall 32 and away from the door rear wall 33 in a circular arc with a radius R3 to the sixth guide point Q6.

[0309] It should be pointed out that, in this embodiment, during the second stage of opening of the door body 30, the circular motion trajectory of the second hinge axis 42 with a radius of R3 is cocircular with the circular motion trajectory of the second hinge axis 42 with a radius of R3 in the third segment (third trajectory arc).

[0310] In this embodiment, the first hinge shaft 41 first moves in multiple arcs relative to the guide part 50 having a center trajectory line connected by multiple arcs, and the second hinge shaft moves in a straight line relative to the guide part 60, so that the door body 30 can move smoothly outward during the opening process, so that the door body 30 drives the side sealing strip 3 thereon to move outward when it is opened, so that the side sealing strip 3 on the opened door body 30 can be quickly separated 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, so as to avoid interference between the side sealing strips 3 installed on the two opposite door bodies 30 when the door body 30 is opened, thereby avoiding that only one of the two door bodies 30 drives the other door body 30 to open, effectively avoiding the increase in the opening area of ​​the access port and reducing the amount of cold overflow.

[0311] In this embodiment, during the opening process of the door body 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 that in Example 1, and 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 those in Example 1, which will not be repeated here.

[0312] Example 6

[0313] The principle of this embodiment 6 is the same as that of the embodiments 1 to 5, and the main difference is that Figure 50 As shown, by setting the guide track line P and the guide track line Q, the door body 30 is opened from G0' to G max During the process of opening the door 30 to G0', the guide center axis Q performs a simple rotation motion with the guide center axis P when the door body 30 is opened to G0' as the rotation axis.

[0314] As a setting method, G0` ≥ 90°. As a setting method, G0` = 90°; that is, as the door body 30 continues to open from 90°, the guide center axis Q performs a simple rotational motion about the guide center axis P when the door body 30 is opened to G0`, so that the door body 30 can open to a sufficiently large angle to facilitate the removal of items.

[0315] In the sixth embodiment, the door 30 is opened from G0′ to G max The motion form is applicable to any of the configurations in Examples 1 to 6 or at least part of the configurations in these configurations. The following is an illustrative example with reference to Example 5 and Example 2.

[0316] like Figure 50 As shown, similar to the fifth 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 sequentially connected tangentially; wherein, the arrangement of the first trajectory arc and the second trajectory arc is the same as that of the fifth embodiment; it can be set that G0`=G4 in the sixth embodiment; the difference between the sixth embodiment and the fifth embodiment is that, within the plane where the top wall of the box body 10 is located, the third trajectory arc is an arc with the fourth guide point P4 when the door body 30 is opened to G4 as the center and the distance between the guide center axis P and the guide center axis Q as the radius. That is, the center of the third trajectory arc in this embodiment 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.

[0317] Under the above setting, in the plane where the top wall of the box body 10 is located, the door body 30 is opened from G0' to G max During the process, the guide center axis Q performs a simple rotation motion with the fourth guide point P4 as the rotation center.

[0318] In some embodiments of the present application, in combination with Example 2, the guide trajectory includes an elliptical arc and a circular arc connected tangentially; wherein the elliptical arc is arranged in the same manner as in Example 2. In this embodiment, G0′=G4 in Example 6; the difference is that the arc is centered at the fourth guide point P4 when the door body 30 is opened to G4, and the distance between the guide center axis P and the guide center axis Q is the radius of the arc. That is, the center of the arc arranged above is on the guide trajectory, and the radius of the arc is the distance between the guide center axis P and the guide center axis Q.

[0319] In this embodiment, the above can make the door body 30 open from G0' to G max During the process of `, the guide center axis Q performs a simple rotational motion with the guide center axis P when the door body 30 is opened to G0` as the rotation axis; the hinge assembly with the above trajectory characteristics can enable the door body 30 to be opened at a sufficiently large angle, which is convenient for taking and placing items.

[0320] In this embodiment, during the process of the door body 30 opening 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 body 30 moves smoothly outward during the opening process, so that the door body 30 drives the side sealing strip 3 thereon to move outward when it is opened, so that the side sealing strip 3 on the opened door body 30 can be quickly separated 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, so as to avoid interference between the side sealing strips 3 installed on the two opposite door bodies 30 when the door body 30 is opened, thereby avoiding that only one of the two door bodies 30 drives the other door body 30 to open, effectively avoiding the increase in the opening area of ​​the access port and reducing the amount of cold overflow.

[0321] In the later stage of the door 30 opening (G0 opening to G max During the process of `, the door body 30 rotates around a single fixed axis so that the door body 30 can be opened at a large enough angle to facilitate the taking and placing of items.

[0322] In this embodiment, during the opening process of the door body 30 , the movement principle of the first hinge shaft 41 relative to the guide portion 50 and the second hinge shaft relative to the guide portion 60 are the same as those in the first embodiment, and will not be repeated here.

[0323] In summary, Examples 1 to 6 of the present invention illustrate the solutions of the present invention from multiple perspectives. It should be noted that Examples 2 to 6 primarily describe the differences between them and the other examples, without providing an extensive description of the similarities. It should be added that the arrangement of the first hinge and the second hinge, which precisely control the rotation and opening of the door body 30 and its movement in a specific direction, requires a structural arrangement with various trajectory characteristics. This requires a refined design to achieve coordinated cooperation between the first hinge and the second hinge, ultimately achieving precise control of the complex movement of the door body 30.

[0324] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0325] For ease of explanation, the above description has been presented 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. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that include: a box body defining a storage chamber having an access opening; Two door bodies are arranged on the box body opposite to each other; the door bodies have a door front wall away from the box body when the door body is closed, and a door side wall connected to the door front wall and away from the other door body; A side sealing strip is provided on a side of the door body away from the door side wall; when the two door bodies are closed, the side sealing strips on the two door bodies cooperate; A hinge assembly connecting the door body and the box body so that the door body can rotate relative to the box body; the hinge assembly includes: The guide portion and the guide part are located at the end of the door body close to the door side wall; the guide portion has a guide track line parallel to the door side wall; the guide part is located on the side of the guide portion away from the door front wall and the door side wall, and has a curved guide track line; The first hinge shaft and the second hinge shaft are fixed to the box body; when the door body is opened from a closed state, the first hinge shaft moves linearly relative to the guide portion along the guide trajectory, and the second hinge shaft moves curved relative to the guide portion along the guide trajectory, so that the door body opens the access opening and moves outward a certain distance, while driving the side sealing strip thereon to separate from the side sealing strip on the other door body; The door body has a first side edge away from the access opening when the door body is closed; in the projection of the top wall of the box body, the door body is opened from the second angle G2 to the maximum angle G max During the process, the first side edge moves along the arc; When the door body is opened to the second angle G2, the central axis of the first hinge axis is located at the midpoint of the guide trajectory line; The box body has a first side wall and a second side wall arranged opposite to each other; the plane where the access opening is located is recorded as a second reference plane M2; a first reference plane M1 perpendicular to the second reference plane M2 is provided on the side of the first side wall close to the second side wall, and the first reference plane M1 is a mid-plane between the first side wall and the second side wall; the first reference plane M1 and the second reference plane M2 remain stationary relative to the box body during the process of the door body being opened relative to the box body; The door body opens to the maximum angle G max During the process, the first side edge first moves away from the first reference plane M1 and close to the second reference plane M2, and then moves close to the first reference plane M1 and the second reference plane M2; The door body opens from the second angle G2 to the maximum angle G max During the process, the distance between the first side edge and the first reference plane M1 first increases and then decreases.

2. The refrigerator according to claim 1, wherein: The door body has a second side edge close to the first hinge axis and located on the side of the first side edge close to the access opening when the door body is closed; The door body opens to the maximum angle G max During the process, the second side edge first moves toward the direction close to the first reference plane M1 and the second reference plane M2, and then moves toward the direction close to the first reference plane M1 and away from the second reference plane M2; Among them, in the projection of the top wall of the box body, the door body is opened from the second angle G2 to the maximum angle G max During the process, the second side edge moves along a circular arc.

3. The refrigerator according to claim 2, characterized in that In the projection of the top wall of the box, the door is opened from the second angle G2 to the maximum angle G max During the process, the distance between the second side edge and the second reference plane M2 keeps increasing.

4. The refrigerator according to claim 1, 2 or 3, characterized in that: The angle bisector of the angle formed by the door front wall and the door side wall is recorded as the angle bisector V; during the opening process of the door body relative to the box body, the angle bisector V remains stationary relative to the door body; The midpoint of the guide trajectory is located on the angle bisector plane V.

5. The refrigerator according to claim 2, characterized in that The door body opens from the second angle G2 to the maximum angle G max In the process, the center of the arc-shaped motion trajectory formed by the first side edge is recorded as the center of the first side edge O C1 The center of the arc-shaped motion trajectory formed by the second side edge is recorded as the center of the second side edge O C2 ; In the projection on the plane where the top wall of the box is located, the first side edge center O C1 The plane parallel to the second reference plane M2 is recorded as the first plane E1; passing through the center of the second side edge O C2 A plane parallel to the second reference plane M2 is recorded as a 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; A straight line where the central axis of the first hinge axis and the central axis of the second hinge axis lie is denoted as a straight line PQ, and a distance between the straight 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 body is opened to a 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; Passing through the center O of the first side edge C1 The intersection of the straight line perpendicular to the second plane E2 and the second plane E2 is marked as point U; the line segment O C1 The midpoint of U is denoted as T; Among them, the center of the second side edge O C2 The straight line with the position N4 of the second side edge is recorded as straight line O C2 N4, the straight line O C2 N4 and line segment O C1 U intersects line segment O C1 The midpoint T of U.

7. The refrigerator according to claim 6, characterized in that The third plane E3 and the line segment O C1 U intersects line segment O C1 The midpoint T of U.

8. The refrigerator according to claim 6 or 7, characterized in that: When the door body is opened to 90 degrees, the central axis of the second hinge axis is located on the extension line of the guide trajectory line.

9. The refrigerator according to claim 1, 2 or 3, characterized in that: The door body has a door rear wall arranged opposite to the door front wall; In the projection of the plane where the top wall of the box body is located, the front wall of the door is the X-axis, the side wall of the door is 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 the positive direction of the Y-axis, and the direction from the side wall of the door to the end of the door body opposite to the side wall of the door is the positive direction of the X-axis, forming a two-dimensional coordinate system XOY; In the coordinate system XOY, the equation of the straight line where the guide trajectory line is located is in, The direction of the curve where the guide trajectory line is located is ; in, As x increases, First increase and then decrease; among them, , for exist The maximum value in ; ; in, The value is any value between 16mm and 20mm. The value is any value between 20mm and 24mm.

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