Refrigerator

Abstract

The application provides a refrigerator, which comprises a cabinet, a door body, a hinge assembly connecting the door body and the cabinet, a guide part located at the end of the door body and having a curve-shaped guide track line, a first hinge shaft and a second hinge shaft fixed to the cabinet, the first hinge shaft and the second hinge shaft are matched with the guide part to make the door body open the taking and placing opening and move inward, the movement track of the first hinge shaft at least partially coincides with the movement track of the second hinge shaft, in the plane of the top wall of the cabinet, the line segment of the guide center axis Q when the door body is closed and the guide center axis P when the door body is opened to G5 is parallel to the front wall of the door body, when the door body is opened to G2=G5 / 2, the straight line passing through the point farthest from the front wall of the door body in the guide track line and parallel to the side wall of the door body perpendicularly bisects the connecting line of the two hinge shafts, the refrigerator accurately controls the rotation of the door body, so that the door body does not exceed or excessively exceeds the side of the cabinet when being opened, has detectability and realizes fine control.

Description

Technical Field

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

[0002] Nowadays, refrigerators are mostly placed inside cabinets for built-in installation. For built-in refrigerators, space constraints within the cabinet mean that the corners of the door cannot extend excessively beyond the cabinet's dimensions during opening to ensure effective door opening. Currently, to meet the needs of built-in installations, most systems use a dual-axis design on either the door or the hinge, with a guide structure on the other to control the door's inward movement as it rotates open. This dual-axis and guide structure, while guiding the door inward during opening, results in a relatively dispersed guide structure that occupies a significant amount of space. Summary of the Invention

[0003] This invention at least partially solves one of the technical problems in the related art.

[0004] Therefore, this application aims to provide a refrigerator whose hinge structure ensures that the door does not extend beyond or excessively extend beyond the side of the refrigerator body when opened.

[0005] The refrigerator according to this application includes:

[0006] A housing that defines a storage compartment with an access opening; the housing has a first body sidewall and a second body sidewall disposed opposite to each other;

[0007] The door is used to open or close the pick-up and drop-off port;

[0008] A hinge assembly connecting the door and the housing to allow the door to rotate relative to the housing; the hinge assembly includes:

[0009] A guide section is located at the end of the door body near the side wall of the first body; the guide section has a curved guide trajectory line;

[0010] The first hinge shaft and the second hinge shaft are fixed to the housing; during the opening of the door, the first hinge shaft and the second hinge shaft simultaneously move in a curved path relative to the guide portion along the guide trajectory line, and the door opens the retrieval port and moves inward a certain distance; wherein, the movement trajectory of the first hinge shaft and the movement trajectory of the second hinge shaft at least partially overlap.

[0011] The door has a front wall that is away from the housing when the door is closed, and a side wall that is connected to the front wall and close to the guide portion;

[0012] The central axis of the first hinge axis is denoted as the guide central axis P, and the central axis of the second hinge axis is denoted as the guide central axis Q;

[0013] Within the plane of the top wall of the housing, when the door is closed, the guide center axis Q is located at the starting guide point Q0 of the guide trajectory line;

[0014] When the door is opened to G5, the guide center axis P is located at the fifth guide point P5 of the guide trajectory line; wherein, the line segment P5Q0 where the fifth guide point P5 and the starting guide point Q0 are located is parallel to the front wall of the door;

[0015] The point at which the guide trajectory line is furthest from the front wall of the door is denoted as the first guide point P1; the straight line passing through the first guide point P1 and parallel to the side wall of the door is denoted as the first straight line K1.

[0016] When the door is opened to G2 = G5 / 2, the guide center axis Q is located at the second guide point Q2 of the guide trajectory line, and the guide center axis P is located at the second guide point P2 of the guide trajectory line;

[0017] The first straight line K1 perpendicularly bisects line segment P2Q2.

[0018] In some embodiments of this application, a displacement coordinate system AOB is established on the side of the box near the door, within the projection of the plane containing the top wall of the box; wherein, in the displacement coordinate system AOB, OB is perpendicular to the plane containing the retrieval port, and the direction from the retrieval port to the front wall of the door when it is closed is positive; OA is parallel to the plane containing the retrieval port, and the direction from the second side wall to the first side wall is positive; the displacement coordinate system AOB is a coordinate system that is stationary relative to the box.

[0019] The door has a rear wall disposed opposite to the front wall of the door;

[0020] During the process of the door opening from the closed state to the second angle G2, the door has a first directional displacement along a direction parallel to the rear wall of the door and pointing away from the side wall of the door. Displacement along a second direction parallel to the side wall of the door, away from the rear wall of the door.

[0021] Among them, the displacement in the first direction The displacement component on axis A is Second directional displacement The displacement component on axis A is in,

[0022] In some embodiments of this application, the door is opened from a second angle G2 to a maximum angle G. max During the process, the door body has a first directional displacement along a direction parallel to the rear wall of the door and pointing away from the side wall of the door. Displacement along a second direction parallel to the side wall of the door and pointing towards the rear wall of the door.

[0023] Among them, the displacement in the first direction The displacement component on axis A is Second directional displacement The displacement component on axis A is in,

[0024] In some embodiments of this application, during the opening of the door, the displacement in the first direction... The displacement along the B-axis is Second directional displacement The displacement along the B-axis is in,

[0025] In some embodiments of this application, G2 < 90°, G5 ≥ 90°.

[0026] In some embodiments of this application, the midpoint of the line connecting the guide center axis P and the guide center axis Q in the plane containing the top wall of the housing is denoted as the center point I of the axis.

[0027] During the process of the door opening from the closed state to the second angle G2, the central point I of the axis moves towards the side wall of the door and away from the front wall of the door;

[0028] The door is opened from the second angle G2 to the maximum angle G. max During the process, the central point I of the axis moves towards the side wall and front wall of the door.

[0029] In some embodiments of this application, the door is opened from the closed state to the maximum angle G. max During the process, the trajectory of the center point I of the axis is a circular arc or an elliptical arc.

[0030] In some embodiments of this application, a door seal is provided on the wall surface opposite to the front wall of the door. When the door is closed, the door seal cooperates with the front face of the box to seal the opening. The door seal has a side sealing edge that is close to the side wall of the door and away from the front wall of the door.

[0031] The first body sidewall is provided with a first reference plane M1 on the side near the second body sidewall, which is perpendicular to the plane where the retrieval port is located, and the first reference plane M1 is the middle plane between the first body sidewall and the second body sidewall; the first reference plane M1 remains stationary relative to the box body during the opening of the door body relative to the box body.

[0032] The door is opened to its maximum angle G. max During the process, the side sealing edge first moves towards the first reference plane M1, and then moves away from the first reference plane M1.

[0033] In some embodiments of this application, the plane where the retrieval port is located is denoted as the second reference plane M2, and the second reference plane M2 remains stationary relative to the box body during the opening of the door body relative to the box body;

[0034] The door is opened to its maximum angle G. max During the process, the side sealing edge first moves towards the first reference plane M1 and the second reference plane M2, then moves towards the first reference plane M1 and away from the second reference plane M2, and then moves away from the first reference plane M1 and the second reference plane M2.

[0035] In some embodiments of this application, the door is opened from the closed state to the maximum angle G. max During the process, the side sealing edge first moves towards the first reference plane M1 and away from the second reference plane M2, and then moves away from the first reference plane M1 and the second reference plane M2.

[0036] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0037] This invention proposes a refrigerator comprising a cabinet, a door, and a hinge assembly connecting the door and the cabinet. The hinge assembly includes a guide portion located at the end of the door and having a curved guide trajectory line, and a first hinge shaft and a second hinge shaft fixed to the cabinet. Both the first and second hinge shafts cooperate with the guide portion to allow the door to open its access opening and move inward. The movement trajectory of the first hinge shaft at least partially overlaps with that of the second hinge shaft. In the plane containing the top wall of the cabinet, the guide center axis Q when the door is closed and the guide center axis P when the door is opened to G5 are parallel to the front wall of the door. When the door is opened to G2 = G5 / 2, a straight line passing through the point where the guide trajectory line is furthest from the front wall and parallel to the side wall of the door perpendicularly bisects the line connecting the two hinge shafts. This invention provides precise control of the door rotation, ensuring that the door does not extend beyond or excessively beyond the side of the cabinet when opened, and is detectable, achieving refined control. Attached Figure Description

[0038] Figure 1 This is a perspective view of the refrigerator of the present invention;

[0039] Figure 2 This is a top view of the refrigerator of the present invention;

[0040] Figure 3 This is a schematic diagram showing the relative positions of the hinge assembly of the refrigerator of the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of the second hinge component on the door of the refrigerator of the present invention;

[0042] Figure 5 This is a view of the hinge when the door is in the closed state in Embodiment 1 of the refrigerator of the present invention;

[0043] Figure 6 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0044] Figure 7 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0045] Figure 8 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0046] Figure 9 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0047] Figure 10 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0048] Figure 11 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0049] Figure 12 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0050] Figure 13 This is a schematic diagram showing the movement of the first side edge, the second side edge, and the side sealing edge during the opening process of the refrigerator in Embodiment 1 of the present invention;

[0051] Figure 14 This is a schematic diagram showing the positions of the first hinge axis relative to the guide portion and the second hinge axis relative to the guide portion when the door is opened to different angles in Embodiment 1 of the refrigerator of the present invention;

[0052] Figure 15 This is a schematic diagram showing the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion when the refrigerator is in the closed state according to Embodiment 1 of the present invention.

[0053] Figure 16 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first hinge axis relative to the guide part and the second hinge axis relative to the guide part;

[0054] Figure 17 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first hinge axis relative to the guide part and the second hinge axis relative to the guide part;

[0055] Figure 18 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first hinge axis relative to the guide part and the second hinge axis relative to the guide part;

[0056] Figure 19 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first hinge axis relative to the guide part and the second hinge axis relative to the guide part;

[0057] Figure 20 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first hinge axis relative to the guide part and the second hinge axis relative to the guide part;

[0058] Figure 21 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first hinge axis relative to the guide part and the second hinge axis relative to the guide part;

[0059] Figure 22 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first hinge axis relative to the guide part and the second hinge axis relative to the guide part;

[0060] Figure 23 This is a simplified schematic diagram illustrating the relative positions of the door and the refrigerator body when the door is closed, according to Embodiment 1 of the present invention.

[0061] Figure 24 The door opening angle in Embodiment 1 of the refrigerator of the present invention A simplified diagram illustrating the relative positions of the door and the housing.

[0062] Figure 25 The door opening angle in Embodiment 1 of the refrigerator of the present invention A simplified diagram illustrating the relative positions of the door and the housing.

[0063] Figure 26 This is a simplified schematic diagram of the relative positions of the door and the refrigerator body when the door opening angle is 90° in Embodiment 1 of the present invention;

[0064] Figure 27 The door opening angle in Embodiment 1 of the refrigerator of the present invention A simplified diagram illustrating the relative positions of the door and the housing.

[0065] Figure 28 This is a comparison diagram of the position of the refrigerator door when it is opened to G1 in Embodiment 1 of the present invention and the position of the door when it is rotated from the closed state to G1 with the center point I of its closed axis as the axis of rotation.

[0066] Figure 29 This is a comparison diagram of the position of the refrigerator door when it is opened to G2 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G1 with the center point I of the axis of rotation as the axis of rotation to G2;

[0067] Figure 30 This is a comparison diagram of the position of the refrigerator door when it is opened to G3 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G2 with the center point I of the axis of rotation as the axis of rotation to G3;

[0068] Figure 31 This is a comparison diagram of the position of the refrigerator door when it is opened to G4 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G3 with the center point I of the axis of rotation as the axis of rotation to G4;

[0069] Figure 32 This is a comparison diagram of the position of the refrigerator door when it is opened to G5 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G4 with the center point I of the axis of rotation as the axis of rotation to G5.

[0070] Figure 33 This is a comparison diagram of the position of the refrigerator door when it is opened to G6 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G5 with the center point I of the axis of rotation as the axis of rotation to G6;

[0071] Figure 34 In the refrigerator embodiment of the present invention, the door is opened to G. max The position of the door when it is in the open state (G6) is relative to the center point I of the door when it is in the open state (G6). The door rotates to G6. max Position comparison chart at different times;

[0072] Figure 35 This is a schematic diagram of the movement of the roller along the convex curve in Embodiment 7 of the refrigerator of the present invention;

[0073] Figure 36This is a schematic diagram showing the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the opening process of the refrigerator in Embodiment 2 of the present invention;

[0074] Figure 37 This is a partial structural diagram of the hinged refrigerator near the hinge area when the door is opened to 90° in Embodiment 2 of the present invention;

[0075] Figure 38 This is a schematic diagram showing the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the opening process of the refrigerator in Embodiment 3 of the present invention;

[0076] Figure 39 This is a schematic diagram showing the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the opening process of the refrigerator in Embodiment 4 of the present invention;

[0077] Figure 40 This is a schematic diagram of the structure of the second hinge component at the end of the door in Embodiment 4 of the refrigerator of the present invention;

[0078] Figure 41 This is a partial structural diagram of the refrigerator near the hinge area when the door is open and in the closed state in Embodiment 4 of the present invention;

[0079] Figure 42 This is a comparison diagram of the position of the refrigerator door when it is opened to G1 in Embodiment 4 of the present invention and the position of the door when it is rotated from the closed state to G1 with the center point I of its closed axis as the axis of rotation.

[0080] Figure 43 This is a comparison diagram of the position of the refrigerator door when it is opened to G2 in Embodiment 4 of the present invention and the position of the door when it is rotated from the open state to G1 with the center point I of the axis of rotation as the axis of rotation to G2;

[0081] Figure 44 This is a comparison diagram of the position of the refrigerator door when it is opened to G3 in Embodiment 4 of the present invention and the position of the door when it is rotated from the open state to G2 with the center point I of the axis of rotation as the axis of rotation to G3;

[0082] Figure 45 This is a comparison diagram of the position of the refrigerator door when it is opened to G4 in Embodiment 4 of the present invention and the position of the door when it is rotated from the open state to G3 with the center point I of the axis of rotation as the axis of rotation to G4.

[0083] Figure 46 This is a comparison diagram of the position of the refrigerator door when it is opened to G5 (=G6) in Embodiment 4 of the present invention and the position of the door when it is rotated from the open state to G4 with the center point I of the axis of rotation as the axis of rotation to G5.

[0084] Figure 47In the refrigerator embodiment four of the present invention, the door is opened to G. max The position of the door when it is open is related to the rotation of the door from the center point I of the axis when it is open to G5 (=G6) to G. max Position comparison chart at different times;

[0085] Figure 48 This is a schematic diagram showing the movement of the first side edge, the second side edge, and the side sealing edge during the opening process of the refrigerator in Embodiment 4 of the present invention;

[0086] Figure 49 This is a schematic diagram showing the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the opening process of the refrigerator in Embodiment 5 of the present invention;

[0087] Figure 50 This is a schematic diagram of the structure of the second hinge component at the end of the door in Embodiment 5 of the refrigerator of the present invention;

[0088] Figure 51 This is a partial structural diagram of the refrigerator near the hinge area when the door is open and in the closed state in Embodiment 5 of the present invention;

[0089] Figure 52 This is a partial structural diagram of the lower end of the door near the hinge area in Embodiment 6 of the refrigerator of the present invention;

[0090] Figure 53 This is a schematic diagram of the assembly structure of the lower end track block and locking block of the door in Embodiment 6 of the refrigerator of the present invention;

[0091] Figure 54 This is an exploded structural diagram of the lower end track block, locking block, and door body in Embodiment Six of the refrigerator of the present invention.

[0092] In the above figures: Box body 10; Door body 30; Front wall of door 31; Side wall of door 32; Rear wall of door 33; First side edge W; Second side edge N; Side sealing edge F;

[0093] Hinge plate 40; Connecting part 401; Extension part 402; Stop part 403; Hook gap 404; Door seal 20; First hinge axis 41; Second hinge axis 42; Guide center axis P; Guide center axis Q; Reference plane M0; First reference plane M1; Second reference plane M2; Third reference plane M3; Guide part 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 Point P6; Seventh guide point P7; Guide trajectory line S; 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; Seventh guide point Q7; First trajectory line S1; Second trajectory line S2; Third trajectory line S3; Track block 70; Ring plate 71; Circumferential groove wall 72; Groove opening 73; Groove bottom 74; Receiving part 34; Mounting hole 35; Receiving part 36; Locking block 80; Root connection part 81; Hook part 82. Detailed Implementation

[0094] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0095] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0096] The terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "third," "fourth," or "fifth" may explicitly or implicitly include one or more of that feature.

[0097] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0098] In the following description, embodiments of this application will be described in detail with reference to the accompanying drawings. In the drawings, the side of the refrigerator facing the user when in use is defined as the front side, and the opposite side is defined as the rear side.

[0099] Example 1

[0100] Reference Figure 1 The refrigerator includes a cabinet 10 having a storage compartment, a door 30 connected to the cabinet 10 for opening and closing the storage compartment, and a refrigeration unit for supplying cold air to the storage compartment. The cabinet 10 includes an inner liner defining the storage compartment, an outer shell connected to the outside of the inner liner to form the appearance of the refrigerator, and an insulation layer disposed between the inner liner and the outer shell to insulate the storage compartment.

[0101] The cabinet 10 defines multiple storage compartments. In this embodiment, the multiple storage compartments include a refrigerator compartment and a freezer compartment located below the refrigerator compartment; it should be noted that the arrangement of multiple storage compartments in the refrigerator is not limited to the example described above.

[0102] The front end of the storage compartment has an access opening for placing food into or retrieving food from the storage compartment; the cabinet 10 is provided with a rotatable door 30 to open or close the access opening of the storage compartment. Specifically, the door 30 is rotatably connected to the cabinet 10 via upper and lower hinge assemblies.

[0103] The hinge assembly includes a first hinge member and a second hinge member, which cooperate with each other and are capable of relative rotation. In this embodiment, the housing 10 includes a first side wall and a second side wall (i.e., the left side wall and the right side wall of the housing 10) disposed opposite to each other; the first hinge member is disposed on the housing 10 and close to one of the side walls; in this embodiment, the first hinge member being close to the first side wall is used as an example for explanation; the second hinge member is disposed at the end of the door 30 close to the first hinge member, and the first hinge member cooperates with the second hinge member to allow the housing 10 and the door 30 to rotate relative to each other. The door 30 has a front wall 31 that is away from the housing 10 when the door 30 is closed, a rear wall 33 that is opposite to the front wall 31, and a side wall 32 that is close to the first hinge member and connected to the front wall 31. For example, when the first hinge is located on the right side of the housing 10, the right side of the door 30 is the door side wall 32 when the door 30 is closed; when the first hinge is located on the left side of the housing 10, the left side of the door 30 is the door side wall 32 when the door 30 is closed.

[0104] The front wall 31 and side wall 32 of the door 30 intersect to form a first side edge W, and the side wall 32 intersects with the rear wall 33 to form a second side wall N. When the door 30 is closed, the first side edge W is located on the side of the second side edge N away from the housing 10. It should be noted that when both the front wall 31 and the side wall 32 are planes, the line of intersection of the two planes is the theoretical first side edge W (similarly, the theoretical second side edge N is the line of intersection of the two planes of the side wall 32 and the rear wall 33); in actual production and processing, the intersection of the front wall 31 and the side wall 32 is rounded, thus forming a curved surface at the intersection of the front wall 31 and the side wall 32; any straight line extending along the height direction of the door 30 on the curved surface at the intersection of the front wall 31 and the side wall 32 can represent the first side edge W (the same applies to the second side edge N). In this application, for ease of description, the theoretical first side edge W and the theoretical second side edge N are used for description. Furthermore, the plane passing through the center of mass of the door 30 and parallel to the front wall 31 is denoted as the center of mass plane C; during the opening of the door 30, the center of mass plane C moves with the door 30. In this embodiment, the center of mass plane C, determined by the geometric center of the door 30, is used for description. That is, the plane between the front wall 31 and the rear wall 33 is the center of mass plane C; the distance between the center of mass plane C and the front wall 31 is equal to the distance between the center of mass plane C and the rear wall 33.

[0105] A door seal 20 is provided on the rear wall of the door 30. When the door 30 is closed, the door seal 20 fits against the front face of the enclosure surrounding the access opening, effectively sealing the connection between the door 30 and the enclosure 10, thereby ensuring that the door 30 seals the access opening and preventing cold air from escaping. Optionally, the door seal 20 can be ring-shaped. The door seal 20 includes a side seal near the door side wall 32, and the edge of the door seal 20 (side seal) near the door side wall 32 and away from the front wall 31 is denoted as the side seal edge F.

[0106] Reference Figures 2 to 3 The first hinge member includes a hinge plate 40; specifically, the hinge plate 40 includes a connecting portion 401 connected to the housing 10 and an extension portion 402 extending forward from the connecting portion 401 and in a horizontal plate shape. The connecting portion 401 can be fastened to the top wall of the housing 10 by fasteners such as screws, pins, and bolts. Specifically, for the hinge at the upper end of the door 30, the connecting portion 401 is connected to the top wall of the housing 10. For the hinge at the lower end of the door 30, the connecting portion 401 is connected to the front end face of the housing 10. A first hinge shaft 41 and a second hinge shaft 42 are formed on the extension portion 402 of the first hinge member; wherein the second hinge shaft 42 is located on the side of the first hinge shaft 41 away from the first body sidewall.

[0107] The second hinge component includes a guide portion 50 located on the door body 30 near the end of the first hinge component; wherein the first hinge shaft 41 and the second hinge shaft 42 are both adapted to the guide portion 50; during the rotation of the door body 30 to open or close, the first hinge shaft 41 moves relative to the guide portion 50, and the second hinge shaft 42 moves relative to the guide portion 50. The trajectory line along which the guide portion 50 guides the relative movement of the central axis of the first hinge shaft 41 and the central axis of the second hinge shaft 42 is denoted as the guide trajectory line S; it should be noted that the guide trajectory line S is a smooth curve. The guide trajectory line S includes a first trajectory line S1 extending along the curve towards the door side wall 32 and the door rear wall 33, a second trajectory line S2 extending along the curve towards the door side wall 32 and away from the door rear wall 33, and a third trajectory line S3 extending along the curve away from the door side wall 32 and the door rear wall 33. The first trajectory line S1, the second trajectory line S2, and the third trajectory line S3 are smoothly connected. The first hinge axis 41, guided by the guide portion 50, moves smoothly along a curved path relative to the door body 30 throughout its entire movement. Similarly, the second hinge axis 42, also guided by the guide portion 50, moves smoothly along a curved path relative to the door body 30 throughout its entire movement. The movement trajectories of the first hinge axis 41 and the second hinge axis 42 relative to the guide portion 50 at least partially overlap, increasing the overlap rate between the first hinge axis 41, the second hinge axis 42, and the guide portion 50. This results in a compact hinge assembly structure, improved movement efficiency of the first and second hinge axes 41 and 42 relative to the guide portion 50, and ensures the smoothness and stability of the door 30's opening.

[0108] It should be noted that in this embodiment, the guide trajectory line S is described as being connected by three trajectory lines, and the specific setting of the guide trajectory line S is limited by this. Similarly, without the above limitations, the guide trajectory line S can be set to include at least one of the three segments: the first trajectory line S1, the second trajectory line S2, and the third trajectory line S3.

[0109] As described above, the first hinge shaft 41 and the second hinge shaft 42 are formed on the first hinge member connected to the housing 10 to form a limiting shaft that guides the movement of the door 30. Specifically, the first hinge shaft 41 and the second hinge shaft 42 extend in the vertical direction (the height direction of the housing 10) to fit the guide portion 50 provided on the door 30.

[0110] As a configurable method, the straight line passing through the point (first guide point P1) with the smallest distance between the guide trajectory line S and the rear wall 33 of the door and parallel to the side wall 32 of the door is denoted as the first straight line K1; the straight line perpendicular to the first straight line K1 and having two intersection points with the guide trajectory line S is denoted as the second straight line K2; the midpoint of the line segment defined by the two intersection points of the second straight line K2 and the guide trajectory line S lies on the first straight line K1. This configuration ensures that, in the XOY coordinate system, within an interval where one y value corresponds to two x values, the guide trajectory line S exhibits symmetry, making the movement of the first hinge axis 41 and the second hinge axis 42 relative to the guide trajectory line S regular and highly detectable.

[0111] As an optional configuration, a straight line passing through the point (first guide point P1) where the guide trajectory line S is closest to the rear wall 33 and parallel to the side wall 32 of the door is denoted as the first straight line K1; a straight line perpendicular to the first straight line K1 and intersecting the guide trajectory line S at two points is denoted as the second straight line K2; the midpoint of the line segment defined by the two intersection points of the second straight line K2 and the guide trajectory line S deviates from the first straight line K1. That is, the midpoint of the line segment defined by the two intersection points of the second straight line K2 and the guide trajectory line S is not on the first straight line K1.

[0112] As an optional configuration, when the line connecting the central axes of the first hinge axis 41 and the second hinge axis 42 is perpendicular to the first straight line K, the distance between the midpoint of the first hinge axis 41 and the second hinge axis 42 and the rear wall 33 of the door is minimized.

[0113] In this embodiment, the example is described with a first hinge shaft 41 and a second hinge shaft 42 on the extensions 402 at both the upper and lower ends of the door body 30, and guide portions 50 at both the upper and lower ends of the door body 30. It should be noted that the arrangement in this embodiment is not limited to providing the same hinge structure at both the upper and lower ends of the door body 30. It can be arranged to connect the door body 30 and the housing 10 as needed to form synchronous movement of the upper and lower ends of the door body 30.

[0114] In this embodiment, as Figures 2-3As shown, the plane (first body sidewall) of the cabinet 10 near the hinge plate 40 is defined as the reference plane M0. The refrigerator is housed in the cabinet 100; the side of the reference plane M0 closest to the cabinet 100 is the outer side, and the opposite side closest to the storage compartment is the inner side. When the door 30 is closed, the front wall 31 of the door is flush with the front face of the cabinet 100 ("flush" includes any case where the distance between the two planes is less than 2mm). When the refrigerator is placed in the cabinet 100 for use, to prevent uneven ground and deformation of the cabinet 100, the distance between the cabinet 100 and the side of the refrigerator (first body sidewall, i.e., reference plane M0) is denoted as μ; it is adjustable, μ∈μ3,5], unit: mm. Once the space accommodated by cabinet 100 is determined, the refrigerator is placed inside cabinet 100. It is necessary to ensure that the door 30 does not interfere with cabinet 100 when opened, so as to effectively open the access panel. To ensure the refrigerator door 30 opens normally, its first side edge W cannot extend too far beyond the side of cabinet 10 (reference plane M0) during rotation, to avoid collision between the first side edge W and cabinet 100, which would prevent the door 30 from opening properly. Furthermore, because the horizontal space of cabinet 100 is occupied by the refrigerator body and also requires space for the door 30 to extend beyond the body when opened, the overall horizontal dimension of the refrigerator is affected by the distance the door 30 extends beyond the first side wall when opened. With a fixed space in cabinet 100, the greater the distance the door 30 extends beyond cabinet 10 when opened, the smaller the horizontal dimension of cabinet 10; conversely, the smaller the distance the door 30 extends beyond cabinet 10 when opened, the larger the dimension of cabinet 10.

[0115] To meet the above requirements, the door 30 needs to be able to move inward during rotation, so that the first side edge W extends as little as possible beyond the side of the housing 10 (reference plane M0). Taking the hinge plate 40 located on the right side of the door 30 as an example, the inside is the left side, meaning the door 30 needs to be able to move to the left; taking the hinge plate 40 located on the left side of the door 30 as an example, the inside is the right side, meaning the door 30 needs to be able to move to the right. The following description uses the right side wall of the housing 10 as the first side wall and the reference plane M0.

[0116] Currently, the dual-axis guide for opening the door 30 results in an irregularly shaped guide path formed by the guide structure (guide groove) that guides the movement of the two axes, in order to satisfy the inward movement of the door 30 during the opening process. This configuration leads to poor coordination and instability of the dual axes, resulting in a lack of smooth movement and poor stability of the door 30 during the entire opening process. Furthermore, in a dual-axis structure, achieving inward movement of the door upon opening requires balancing the door's opening movement trend with the dual-axis structure. This necessitates high precision in the relative positions of the two axes and the coordination of the guiding structures with each axis. Machining accuracy has a decisive impact on controlling the final movement trend of the door. However, in current dual-axis door 30 rotational inward movement designs, firstly, the dual-axis and dual-guide-slot configurations, due to the two guide slots, require high precision in their relative positions during machining, often resulting in low machining accuracy. Secondly, the irregular characteristics of a single guide slot lead to both low machining accuracy and wear, affecting control precision. Moreover, the current dual-axis door 30 rotational inward movement design, due to its irregular structure, makes it difficult to effectively detect the machining and coordination precision of the two axes and the guiding structures (guide slots). Manufacturing-induced precision reductions cannot be detected and effectively adjusted in time, resulting in products that cannot accurately control the door's complex rotational inward movement. In addition, in order to meet the requirement of the door body moving inward, whether two guide grooves or a single guide groove is set to guide the movement of the two axes, the two axes move along their respective trajectory lines under the guidance of the guide structure. The resulting guide structure is relatively dispersed and occupies a large space.

[0117] like Figure 5 As shown, in some embodiments of this application, the first hinge axis 41 is located on the side of the second hinge axis 42 near the side wall of the first body and the retrieval port. In the projection of the top wall of the housing 10, the angle between the straight line containing the central axis of the first hinge axis 41 and the central axis of the second hinge axis 42 and the plane containing the retrieval port is denoted as γ, where γ is an acute angle. As one arrangement, γ can be any value between 40° and 60°. This arrangement limits the position of the first hinge axis 41 and the second hinge axis 42 relative to the plane containing the retrieval port. On the one hand, this makes the structure of the first hinge axis 41 and the second hinge axis 42 compact; on the other hand, it allows the first hinge axis 41 and the second hinge axis 42 to efficiently utilize the guide portion 50, thereby increasing the maximum opening angle of the door 30 under the same guide portion 50 arrangement, ensuring the effectiveness of opening the door 30 and facilitating item retrieval.

[0118] In some embodiments of this application, the projections of the first hinge axis 41 and the second hinge axis 42 are separated in the projection of the plane containing the top wall of the housing 10; that is, the first hinge axis 41 and the second hinge axis 42 are two separate limiting axes.

[0119] In some other embodiments of this application, the first hinge axis 41 and the second hinge axis 42 are connected. As one possible configuration, in the projection of the plane containing the top wall of the housing, the projection of the first hinge axis 41 is externally tangent to or intersects with the projection of the second hinge axis 42.

[0120] It should be noted that, regardless of whether the first hinge shaft 41 and the second hinge shaft 42 are separate or integrally formed, their cross-sections are not limited to circles. In this invention, during the opening of the door 30, the two hinge shafts cooperate with the limiting boundaries on the guide portion 50 that are equidistant from the guide trajectory line S. The cross-sectional shapes of the two hinge shafts only need to satisfy the above limiting cooperation. For example, it can be configured that the first hinge shaft 41 or the second hinge shaft 42 has contact protrusions that cooperate with the limiting boundaries on the guide portion 50 that are equidistant from the guide trajectory line S, which can also satisfy the limiting and guiding requirements and realize the relative rotation of the first hinge component and the second hinge component.

[0121] The distance between the first hinge axis 41 and the second hinge axis 42 is small. When the door 30 is opened, the movement trajectory of the central axis of the first hinge axis 41 relative to the guide trajectory line S largely coincides with the movement trajectory of the central axis of the second hinge axis 42 relative to the guide trajectory line S. Specifically, relative to the guide trajectory line S, when the central axis of the second hinge axis 42 moves to the position of the central axis of the first hinge axis 41 relative to the guide trajectory line S when the door 30 is closed, the movement trajectory of the central axis of the second hinge axis 42 relative to the guide trajectory line S begins to coincide with the movement trajectory of the central axis of the first hinge axis 41 relative to the guide trajectory line S. This design of the present invention increases the overlap rate between the first hinge axis 41, the second hinge axis 42, and the guide portion 50, resulting in a compact hinge assembly structure, improved movement efficiency of the first hinge axis 41 and the second hinge axis 42 relative to the guide portion 50, and ensures the smoothness and stability of the door 30 opening.

[0122] In some embodiments of this application, the length of the guide trajectory line S on the side of the centroid plane C near the rear wall 33 of the door is denoted as L1, and the length of the trajectory line S on the side of the centroid plane C near the front wall 31 of the door is denoted as L2; ​​wherein, L1 > L2. As an optional configuration, L2:L1 can be any value from 0 to 0.3. In the hinge assembly with the above trajectory characteristics, most of the travel of the guide portion 50 guiding the first hinge axis 41 and the second hinge axis 42 is located in the corner region of the door body 30 near the second side edge N; when the door body 30 is opened, the external force applied by the person opening the door is applied to the corner region of the door body 30 diagonally opposite to the second side edge N, and the applied external force is balanced with the force of the hinge assembly located at its diagonal, making the force on the door body 30 more balanced and helping to increase the stability of the door body 30 when opening.

[0123] As a possible configuration, the guide trajectory S that guides the relative movement of the central axis of the first hinge axis 41 and the central axis of the second hinge axis 42 is an arc; that is, the guide part 50 guides the first hinge axis 41 to move, thereby causing the central axis of the first hinge axis 41 to move along the arc; at the same time, the guide part 50 guides the second hinge axis 42 to move, thereby causing the central axis of the second hinge axis 42 to move along the arc.

[0124] It should be noted that the circular motion mentioned above refers to circular motion with a constant radius. Since both the first hinge axis 41 and the second hinge axis 42 move relative to the guide portion 50 along the guide trajectory line S, the circular trajectories formed by the movements of the first hinge axis 41 and the second hinge axis 42 relative to the guide portion 50 are concentric. Furthermore, it should be added that the circular arc involved in this invention includes a standard circular arc (the portion between any two points on a circle) according to the standard mathematical definition, as well as an arc that deviates from the standard circular arc due to processing errors, minor deformation or wear of the component, or reserved gaps, but still possesses the characteristics of a circular arc (such as oscillating around a circular arc with a small deviation). In the following description of this embodiment, the guide trajectory line S is used as an example of a circular arc.

[0125] As an optional configuration, the guide portion 50 is configured as a guide groove; corresponding to the arc-shaped guide trajectory line S, the guide groove is an arc-shaped groove. That is, the center trajectory line of the guide groove is the guide trajectory line S. This configuration allows the first hinge shaft 41 and the second hinge shaft 42, which cooperate with the guide portion 50, to simultaneously perform arc-shaped movements relative to the guide portion 50, effectively coordinating the movements of the first hinge shaft 41 and the second hinge shaft 42, and increasing the smoothness and stability of the door 30's rotational opening.

[0126] The center of the circle containing the configurable arc-shaped guide trajectory line S is located on the side closest to the front wall 31 of the door.

[0127] Combination Figure 4As shown, within the projection of the plane containing the top wall of the housing 10, the Y-axis is defined by the door side wall 32, and the X-axis is defined by the plane passing through the first side edge W and parallel to the loading / unloading opening, i.e., the X-axis is defined by the plane containing the front wall 31 (optionally, the front wall 31 is perpendicular to the door side wall 32). The X-axis is perpendicular to the Y-axis and intersects at the origin O. The positive direction of the Y-axis is defined by the direction from the front wall 31 to the rear wall 33, and the positive direction of the X-axis is defined by the direction from the door side wall 32 to the opposite end of the door body 30. This forms the two-dimensional coordinate system XOY of the door body 30. It should be noted that the two-dimensional coordinate system XOY is a stationary two-dimensional coordinate system relative to the door body 30.

[0128] In the coordinate system XOY, the equation of the circle containing the guide trajectory line S is: x = a + rcosθ, y = b + rsinθ; (a, b) are the coordinates of the center of the circle, denoted as the center of the guide circle O0; r is the radius of the guide circle O0, θ is a parameter, and (x, y) are the coordinates of the points it passes through.

[0129] The central angle of the guide circle O0 corresponding to the guide trajectory line S is denoted as the guide central angle β. As an adjustable setting, the guide central angle β is an obtuse angle; it can also be set to any value between 120° and 180°. This setting effectively ensures that, in this embodiment, with the guide trajectory line S being an arc, the maximum opening angle of the door 30 is not less than 90°, allowing the rear wall 33 of the door 30 to be displayed forward for easy access to items.

[0130] As one possible configuration, the arc-shaped guide trajectory line S corresponds to the arc segment of the guide circle O0 as θ∈μθ`1, θ`2], where θ`1∈μ-20°, 20°] any value; θ`2∈μ150°, 170°] any value. This configuration limits the size range of the space occupied by the guide part 50, reducing its footprint in the thickness direction of the door body 30, thus enabling the hinge assembly of this invention to be suitable for thin-sized door bodies 30. As another possible configuration, the arc-shaped guide trajectory line S corresponds to the arc segment of the guide circle O0 as θ∈μ20°, 160°]; as yet another possible configuration, the arc-shaped guide trajectory line S corresponds to the arc segment of the guide circle O0 as θ∈μ-15°, 160°].

[0131] Combination Figure 4In some embodiments of this application, the angle bisector of the angle formed by the front wall 31 and the side wall 32 is denoted as the first angle bisector V1; the angle bisector of the angle formed by the rear wall 33 and the side wall 32 is denoted as the second angle bisector V2. In this embodiment, the dihedral angle formed by the plane containing the front wall 31 and the plane containing the side wall 32 is 90°, and the dihedral angle formed by the plane containing the rear wall 33 and the plane containing the side wall 32 is also 90°. During the opening process of the door 30 relative to the box 10, the first angle bisector V1 and the second angle bisector V2 move with the door 30 relative to the box 10; that is, during the opening process of the door 30, the first angle bisector V1 and the second angle bisector V2 remain stationary relative to the door 30.

[0132] The first angle bisector V1 and the second angle bisector V2 intersect and divide the door 30 into four regions: a first region near the door side wall 32, a third region opposite to the first region, a second region near the door rear wall 33 and adjacent to the first region, and a fourth region opposite to the second region.

[0133] In some embodiments of this application, within the plane of the top wall of the housing 10, the guide portion 50 extends from the third region to the second region and from the second region to the first region; that is, the guide portion 50 is not within the fourth region; the above defines the location of the guide portion 50 at the end of the door 30; relative to the front wall 31, the guide portion 50 is close to the rear wall 33; that is, the guide portion 50 is located in the corner region close to the second side edge N; when the door 30 is opened, the external force applied by the person opening the door is applied to the corner region of the door 30 diagonally opposite to the second side edge N, and the applied external force is balanced with the force of the hinge assembly located at its diagonal, making the force on the door 30 more balanced and helping to increase the stability of the door 30 when opening. In addition, as an alternative configuration, the guide center O0 is located within the fourth region, and the position of the center further defines the size of the guide trajectory line S, thereby defining the size of the space it occupies.

[0134] like Figures 5-12 , Figure 14 In some embodiments of this application, the guide trajectory line S has a starting guide point P0, a first guide point P1, a second guide point P2, a third guide point P3, a fourth guide point P4, a fifth guide point P5, a sixth guide point P6, and a seventh guide point P7. In the XOY coordinate system, the parameter θ corresponding to 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, the sixth guide point P6, and the seventh guide point P7 decreases sequentially. That is, in the XOY coordinate system, 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, the sixth guide point P6, and the seventh guide point P7 are arranged clockwise along the guide trajectory line S.

[0135] Among them, the first guide point P1 is the point where the distance between the guide trajectory line S and the rear wall 33 of the door is the smallest; that is, O0P1 is perpendicular to the X-axis (front wall 31 of the door). The sixth guide point P6 is the point where the distance between the guide trajectory line S and the side wall 32 of the door is the smallest; that is, O0P6 is perpendicular to the Y-axis (side wall 32 of the door).

[0136] Furthermore, the guide trajectory line S 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, a sixth guide point Q6, and a seventh guide point Q7. In the XOY coordinate system, the parameter θ corresponding to the starting guide point Q0, the first guide point Q1, the second guide point Q2, the third guide point Q3, the fourth guide point Q4, the fifth guide point Q5, the sixth guide point Q6, and the seventh guide point Q7 decreases sequentially. That is, in the XOY coordinate system, the starting guide point Q0, the first guide point Q1, the second guide point Q2, the third guide point Q3, the fourth guide point Q4, the fifth guide point Q5, the sixth guide point Q6, and the seventh guide point Q7 are arranged clockwise along the guide trajectory line S.

[0137] It should be noted that, above, the third guide point Q3 coincides with the first guide point P1, that is, the third guide point Q3 (first guide point P1) is the point where the distance between the guide trajectory line S and the rear wall 33 of the door is the smallest; that is, O0P3 is perpendicular to the X-axis;

[0138] As a possible configuration, the line Q0P5 containing the starting guide point Q0 and the fifth guide point P5 is parallel to the front wall 31 (X-axis); that is, the line Q0P5 containing the starting guide point Q0 and the fifth guide point P5 is perpendicular to the side wall 32 (Y-axis).

[0139] In one configurable manner, the midpoint I2 of the line segment P2Q2, where the second guide point P2 and the second guide point Q2 are located, lies on O0P1. That is, O0P1 is the perpendicular bisector of P2Q2. Combining the aforementioned definition of the first straight line K, the midpoint of the line segment defined by the two points perpendicular to the first straight line K and intersecting the guide trajectory line S lies on the first straight line K.

[0140] In the present invention, under the shape limitation of the guide trajectory line, Q i Located at P i The side away from the door sidewall 32; where i is an integer and i∈μ0,7).

[0141] Specifically, in the XOY coordinate system, Q i The corresponding parameter θ Qi Greater than P i The corresponding parameter θ Pi Where i is an integer, and i∈μ0, 7]. That is, the parameter θ corresponding to the initial guide point Q0.Q0 The parameter θ is greater than the parameter corresponding to the initial guiding point P0. P0 The parameter θ corresponding to the first guide point Q1 Q1 The parameter θ is greater than the parameter corresponding to the first guiding point P1. P1 The parameter θ corresponding to the second guiding point Q2 Q2 The parameter θ is greater than the parameter corresponding to the second guiding point P2. P2 The parameter θ corresponding to the third guiding point Q3 Q3 The parameter θ is greater than the parameter corresponding to the third guiding point P3. P3 The parameter θ corresponding to the fourth guide point Q4 Q4 The parameter θ is greater than the parameter corresponding to the fourth guiding point P4. P4 The parameter θ corresponding to the fifth guide point Q5 Q5 The parameter θ is greater than the parameter corresponding to the fifth guiding point P5. P5 The parameter θ corresponding to the sixth guide point Q6 Q6 The parameter θ is greater than the parameter corresponding to the sixth guiding point P6. P6 The parameter θ corresponding to the seventh guide point Q7 Q7 The parameter θ is greater than the parameter corresponding to the seventh guiding point P7. P7 On the guide circle O0, the chord length Q i P i This distance is equal to the distance between the central axis of the first hinge axis 41 and the central axis of the second hinge 42. That is, during the opening of the door 30, the central axis of the first hinge axis 41 moves to point P on the guide trajectory line S. i At that time, the central axis of the second hinge axis 42 moves to point Q on the guide trajectory line S. i Place.

[0142] In some embodiments of this application, the guide trajectory line S extends from the starting guide point Q0 along an arc of radius r, sequentially passing through the first guide point Q1, the second guide point Q2, the third guide point Q3, the fourth guide point Q4, the fifth guide point Q5, the sixth guide point Q6, and the seventh guide point Q7, to the seventh guide point P7. Specifically, the guide trajectory line S first extends along an arc of radius r towards the door side wall 32 and the door rear wall 33, then extends along an arc of radius r towards the door side wall 32 and away from the door rear wall 33, and finally extends along an arc of radius r away from the door side wall 32 and the door rear wall 33. It should be noted that in the embodiments of this application, the specific guide points and guide points defined above are for the purpose of subsequently explaining the movement of the first hinge axis 41 and the second hinge axis 42 relative to the guide portion 50 during the opening of the door body 30.

[0143] Additionally, it should be noted that in this embodiment, the initial guide point Q0 corresponds to the position of the central axis of the second hinge axis 42 relative to the guide trajectory line S when the door 30 is closed; the seventh guide point P7 corresponds to the position of the door 30 when it is opened to its maximum angle G. max The position of the central axis of the first hinge axis 41 relative to the guide trajectory line S.

[0144] In some embodiments of this application, the second hinge component is designed with consideration for the possibility that excessive force is applied when closing the door 30, causing the door 30 to press against the door seal 20 and move excessively towards the housing 10. An extension section is provided at the end of the guide trajectory line S away from the door sidewall 32 to reserve space for this situation. That is, when the door 30 continues to move in the closing direction after closing to 0°, the guide portion 50 has a reserved extension section to allow the first hinge shaft 41 and the second hinge shaft 42 to continue moving relative to the guide portion 50. Similarly, to prevent the door 30 from opening to its maximum angle G... max If excessive force is applied and the guide door moves excessively (leading to deformation, etc.), an extension section is provided at one end of the guide trajectory line S near the door side wall 32 to reserve space for the above situation. When reserving space at at least one end of the guide part 50, the starting guide point Q0 and the seventh guide point P7 are not the endpoints of the trajectory line; that is, the setting of the starting guide point Q0 and the seventh guide point P7 as the endpoints of the guide trajectory line S is only one feasible method, which essentially corresponds to the position of the two hinge axes when the door 30 is closed or opened to the maximum angle. The setting of the guide part 50 is not limited to the starting guide point Q0 and the seventh guide point P7 being the endpoints of the guide trajectory line S.

[0145] like Figure 5 As shown, in this embodiment, when the door 30 is in the closed state, the central axis of the first hinge axis 41 is located at the starting guide point P0 of the guide trajectory line S, and the central axis of the second hinge axis 42 is located at the starting guide point Q0 of the guide trajectory line S. That is, when the door 30 is in the closed state, both the first hinge axis 41 and the second hinge axis 42 are located at the end of the guide portion 50 away from the door side wall 32, and the second hinge axis 42 is located on the side of the first hinge axis 41 away from the first body side wall and the retrieval opening.

[0146] In summary, during the opening of the door 30, the center of the guide trajectory line S of the guide part 50 is located on the side closer to the front wall 31 of the door; the first hinge axis 41 moves in an arc relative to the guide part 50, and the second hinge axis 42 moves in an arc relative to the guide part 50, so that the door 30 can move a certain distance inward (towards the side wall of the second body) while rotating, effectively compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30, limiting the distance of the first side edge W beyond the reference plane M0 to not exceed μ, effectively avoiding interference between the door 30 and the cabinet 100 when the door is opened, further reducing the limitation of the cabinet 100 space on the size of the refrigerator that can be accommodated, and improving the utilization rate of the cabinet 100 space.

[0147] Since there is a relative motion relationship between the guide portion 50 and the first hinge axis 41, and between the guide portion 50 and the second hinge axis 42, if the door 30 is opened with the guide portion 50 as a stationary reference point, it is equivalent to the first hinge axis 41 moving under the constraint of the guide portion 50, and the second hinge axis 42 moving under the constraint of the guide portion 50. For ease of description, this application uses the guide portion 50 as a stationary reference point, and the first hinge axis 41 and the second hinge axis 42 moving relative to the reference point for explanation.

[0148] It should be noted that the guide trajectory line S described in this invention is set in a standard configuration (standard circular arc). In the actual manufacturing process of the product, in order to meet the assembly requirements, the fit error between the two door hinges and the guide part, the existence of gaps, or the machining error may cause the movement trajectory of the two shafts relative to the guide part to be a non-standard guide trajectory line S, but a trajectory line with deviation from the standard guide trajectory line S as the main line. The guide line S with deviation generated above also falls within the scope of protection of this invention.

[0149] In this embodiment, the central axis of the first hinge axis 41 is denoted as the guiding central axis P, and the central axis of the second hinge axis 42 is denoted as the guiding central axis Q; within the projection of the plane containing the top wall of the housing 10, the line segment PQ is denoted as the axis center line segment PQ; the midpoint of the axis center line segment PQ is denoted as the axis center point I.

[0150] like Figures 5-22As shown, the movement of the first hinge axis 41 along the guide portion 50 is equivalent to the movement of the guide center axis P along the guide trajectory line S, and the movement of the second hinge axis 42 along the guide portion 50 is equivalent to the movement of the guide center axis Q along the guide trajectory line S. This allows the door 30 to move inward (towards the side wall of the second body) a certain distance while rotating, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30. This limits the distance of the first side edge W beyond the reference plane M0 to not exceed μ, effectively preventing interference between the door 30 and the cabinet 100 when the door is opened. The movement of the door 30 relative to the cabinet 10 is equivalent to the relative movement between the two in the plane where the top wall of the cabinet 10 is located (or in the plane parallel to the top wall of the cabinet 10); that is, the movement of the door 30 relative to the cabinet 10 is a relative movement in a two-dimensional plane. Since the first hinge shaft 41 and the second hinge shaft 42 are fixed on the housing 10, the first hinge shaft 41 and the second hinge shaft 42 remain stationary relative to the housing 10. In the plane where the top wall of the housing 10 is located, the movement of the axis segment PQ relative to the guide part 50 is equivalent to the movement of the housing 10 relative to the guide part 50, and is also equivalent to the movement of the door 30 relative to the housing 10.

[0151] In the following description, for ease of explanation, the guide portion 50 (door 30) is used as a stationary reference frame. The motion of the axis segment PQ relative to the second hinge member (guide portion 50) on the door 30 is represented by the motion within the plane containing the top wall of the housing 10. That is, the description of relative motion in this invention is based on relative motion within a two-dimensional plane. The motion of the door 30 relative to the housing 10 is then obtained based on the relativity of motion.

[0152] In the embodiments of this application, in the plane where the top wall of the box 10 is located, the door 30 rotates around a point that changes relative to the door 30 during the opening process. This point is the midpoint of the axis line segment PQ - the axis center point I; that is, in this embodiment, in the plane where the top wall of the box 10 is located, the door 30 rotates around the axis center point I that changes relative to it.

[0153] In this embodiment, as Figures 5-22 As shown, under the constraints of the guide section 50, the first hinge axis 41, and the second hinge axis 42, the refrigerator opens to its maximum angle G. max The angle >90° will be used as an example. The door 30 opens from the closed state to its maximum angle G. max During the process, when the door 30 rotates open to a specific angle, the relative positions of the first hinge axis 41 relative to the guide portion 50 and the relative positions of the second hinge axis 42 relative to the guide portion 50 are as follows:

[0154] In the following description, φ represents the opening angle of the door 30. When the door 30 is closed, the opening angle φ = 0°. When the door 30 is opened relative to the box 10, the opening angle φ is a positive number when the opening of the loading and unloading port is open.

[0155] like Figure 5 and Figure 15 As shown, when φ=0°, the door 30 is in the closed state; the guide center axis P is located at the starting guide point P0 of the guide trajectory line S, the guide center axis Q is located at the starting guide point Q0 of the guide trajectory line S, and the center point I of the axis is located at the starting midpoint I0 relative to the door 30 (guide part 50).

[0156] like Figure 6 and Figure 16 As shown, when φ∈(0°, G1), the door 30 rotates from the closed state to G1 and opens. During this opening process, the guide center axis P moves in an arc along the guide trajectory line S towards the door side wall 32 and the door rear wall 33, and the guide center axis Q also moves in an arc along the guide trajectory line S towards the door side wall 32 and the door rear wall 33. That is, when the door 30 opens at an angle φ∈(0°, G1), the guide center axis P and the guide center axis Q maintain the same movement trend, both moving along the guide trajectory line S towards the door side wall 32 and the door rear wall 33.

[0157] like Figure 6 and Figure 16 As shown, when φ = G1, the door 30 rotates open to G1; the guide center axis P is located at the first guide point P1 of the guide trajectory line S (the point where the guide trajectory line S is closest to the rear wall 33 of the door), and the first guide point P1 is located on the side of the starting guide point P0 near the side wall 32 and the rear wall 33 of the door; the guide center axis Q is located at the first guide point Q1 of the guide trajectory line S, and the first guide point Q1 is located on the side of the starting guide point Q0 near the side wall 32 and the rear wall 33 of the door; the center point I of the axis moves with the axis line segment PQ to the first midpoint I1, and the first midpoint I1 is located on the side of the starting midpoint I0 near the side wall 32 and the rear wall 33 of the door. G1 can be set to any value in [μ15°, 25°].

[0158] like Figure 7 and Figure 17 As shown, when φ∈(G1, G3), the door 30 rotates open from G1 to G3. During this opening process, the guide center axis P moves in an arc along the guide trajectory line S towards the side wall 32 and away from the rear wall 33, while the guide center axis Q moves in an arc along the guide trajectory line S towards both the side wall 32 and the rear wall 33. That is, when the door 30 opens at an angle φ∈(G1, G3), the movement trends of the guide center axis P and the guide center axis Q are different; the guide center axis P moves away from the rear wall 33 while the guide center axis Q moves towards the rear wall 33.

[0159] As described above, when the door 30 opens at angles φ∈(G1, G3), the movement trend within that angle range remains consistent; the only difference lies in the position of the guide center axis P relative to the guide trajectory line S, and the position of the guide center axis Q relative to the guide trajectory line S. Thus, when the opening angle φ∈(G1, G3), any one of these opening angles can represent the relative positions of the first hinge axis 41 and the guide part 50, and the second hinge axis 42 and the guide part 50 when the door 30 is opened to that angle range; specifically, as shown... Figure 7 and Figure 17 As shown, φ = G2 represents the position within this opening angle range, for comparison with the door 30 when it is opened to other states.

[0160] like Figure 7 and Figure 17 As shown, when φ=G2, the door 30 rotates open to G2; the guide center axis P is located at the second guide point P2 on the guide trajectory line S (the line segment P2Q2 where the second guide point P2 and the second guide point Q2 are located is perpendicular to O0P1), and the second guide point P2 is located on the side of the first guide point P1 that is close to the door side wall 32 and away from the door rear wall 33; the guide center axis Q is located at the second guide point Q2 on the guide trajectory line S, and the second guide point Q2 is located on the side of the first guide point Q1 that is close to the door side wall 32 and the door rear wall 33; the axis center point I moves with the axis center line segment PQ to the second midpoint I2, and the second midpoint I2 is located on the side of the first midpoint I1 that is close to the door side wall 32 and the door rear wall 33; G2 can be set to any value in μ[44°, 48°].

[0161] like Figure 8 and Figure 18 As shown, when φ=G3, the door 30 rotates open to G3; the guide center axis P is located at the third guide point P3 of the guide trajectory line S, and the third guide point P3 is located on the side of the second guide point P2 that is close to the door side wall 32 and away from the door rear wall 33; the guide center axis Q is located at the third guide point Q3 of the guide trajectory line S (i.e., the first guide point P1 - the point where the guide trajectory line S is closest to the door rear wall 33), and the third guide point Q3 is located on the side of the second guide point Q2 that is close to the door side wall 32 and the door rear wall 33; the axis center point I moves with the axis center line segment PQ to the third midpoint I3, and the third midpoint I3 is located on the side of the second midpoint I2 that is close to the door side wall 32 and away from the door rear wall 33; G3 can be set to any value in μ[68°, 72°].

[0162] like Figures 8-11As shown, when φ∈(G3, G6), the door 30 rotates open from G3 to G6. During this opening process, the guide center axis P moves in an arc along the guide trajectory line S towards the side wall 32 and away from the rear wall 33, and the guide center axis Q moves in an arc along the guide trajectory line S towards the side wall 32 and away from the rear wall 33. That is, when the opening angle φ∈(G3, G6), the movement trends of the guide center axis P and the guide center axis Q are consistent, and both the guide center axis P and the guide center axis Q move in an arc towards the side wall 32 and away from the rear wall 33.

[0163] As described above, when the door 30 opens at angles φ∈(G3, G6), the movement trend within this opening angle range remains consistent; the only difference lies in the position of the guide center axis P relative to the guide trajectory line S, and the position of the guide center axis Q relative to the guide trajectory line S. Thus, when the opening angle φ∈(G3, G6), any one of these opening angles can represent the relative positions of the first hinge axis 41 and the guide part 50, and the second hinge axis 42 and the guide part 50 when the door 30 is opened to the corresponding range; specifically, as shown... Figure 9 and Figure 10 As shown, φ = G4 or G5 (where G4 < G5) represents the position within this opening angle range, for comparison with when the door 30 is opened to other states.

[0164] like Figure 9 and Figure 19 As shown, when φ = G4, the door 30 rotates open to G4; the guide center axis P is located at the fourth guide point P4 of the guide trajectory line S, and the fourth guide point P4 is located on the side of the third guide point Q3 that is close to the door side wall 32 and away from the door rear wall 33; the guide center axis Q is located at the fourth guide point Q4 of the guide trajectory line S, and the fourth guide point Q4 is located on the side of the third guide point Q3 that is close to the door side wall 32 and away from the door rear wall 33; the center point I of the axis moves to the fourth midpoint I4 with the axis line segment PQ, and the fourth midpoint I4 is located on the side of the third midpoint I3 that is close to the door side wall 32 and away from the door rear wall 33; in this embodiment, G4 = 90°, to illustrate the situation when the door 30 is opened to 90°.

[0165] like Figure 10 and Figure 20As shown, when φ = G5, the door 30 rotates open to G5; the guide center axis P is located at the fifth guide point P5 on the guide trajectory line S (the point where the line containing the initial guide point Q0 is parallel to the front wall 31 (X-axis) of the door), and the fifth guide point P5 is located on the side of the fourth guide point P4 that is close to the side wall 32 of the door and away from the rear wall 33 of the door; the guide center axis Q is located at the fifth guide point Q5 on the guide trajectory line S, and the fifth guide point Q5 is located on the side of the fourth guide point Q4 that is close to the side wall 32 of the door and away from the rear wall 33 of the door; the center point I of the axis moves with the axis line segment PQ to the fifth midpoint I5, and the fifth midpoint I5 is located on the side of the fourth midpoint I4 that is close to the side wall 32 of the door and away from the rear wall 33 of the door. G3 can be set to any value in [μ98°, 102°]. In some embodiments of this application, φ = G5 = 2γ; that is, the central axis of the first hinge axis 41 is located at the fifth guide point P5 of the guide trajectory line S, and the line segment P5Q0 where the fifth guide point P5 and the starting guide point Q0 are located is parallel to the front wall of the door, increasing detectability.

[0166] like Figure 11 and Figure 21 As shown, when φ = G6, the door 30 rotates open to G6; the guide center axis P is located at the sixth guide point P6 of the guide trajectory line S (the point where the guide trajectory line S is closest to the door side wall 32), and the sixth guide point P6 is located on the side of the fifth guide point P5 that is close to the door side wall 32 and away from the door rear wall 33; the guide center axis Q is located at the sixth guide point Q6 of the guide trajectory line S, and the sixth guide point Q6 is located on the side of the fifth guide point Q5 that is close to the door side wall 32 and away from the door rear wall 33; the axis center point I moves with the axis center line segment PQ to the sixth midpoint I6, and the sixth midpoint I6 is located on the side of the fifth midpoint I5 that is close to the door side wall 32 and away from the door rear wall 33. G3 can be set to any value in [μ118°, 122°].

[0167] In summary, during the process of the door 30 opening from the closed state to G6, both the first hinge axis 41 and the second hinge axis 42 move in an arc along the direction of the guide portion 50 near the door side wall 32 throughout the entire process.

[0168] like Figure 12 and Figure 22 As shown, φ∈(G6, G max At that time, door 30 is opened from G6 to G. max During the opening process described above, the guide center axis P moves in an arc along the guide trajectory line S away from the door side wall 32 and the door rear wall 33, while the guide center axis Q moves in an arc along the guide trajectory line S towards the door side wall 32 and away from the door rear wall 33. That is, the door 30 opens at an angle φ ∈ (G6, G...). max At the same time, the movement trends of the guiding center axis P and the guiding center axis Q remain different. The guiding center axis P moves away from the side wall 32 of the door while the guiding center axis Q moves closer to the side wall 32 of the door.

[0169] The opening angle φ of the door is 30° ∈ (G6, G max When the opening angle range is constant, the movement trend remains the same; the only difference is that the position of the guide center axis P relative to the guide trajectory line S is different, and the position of the guide center axis Q relative to the guide trajectory line S is different. Thus, the opening angle φ∈(G6, G... max When the door 30 is opened to the corresponding section, selecting any one of the opening angles can represent the relative positions of the first hinge axis 41 and the guide part 50, and the second hinge axis 42 and the guide part 50; specifically, as shown in the figure... Figure 12 and Figure 22 As shown, with φ=G max , represents the position within the opening angle range, for comparison with when the door 30 is opened to other states.

[0170] like Figure 12 and Figure 22 As shown, φ=G max At that time, the door 30 rotates open to G. max The guide center axis P is located at the seventh guide point P7 on the guide trajectory line S. The seventh guide point P7 is located on the side of the sixth guide point P6 away from the door side wall 32 and the door rear wall 33. The guide center axis Q is located at the seventh guide point Q7 on the guide trajectory line S. The seventh guide point Q7 is located on the side of the sixth guide point Q6 close to the door side wall 32 and away from the door rear wall 33. The axis center point I moves with the axis center line segment PQ to the sixth midpoint I6. 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 is configurable. max Any value in [∈μ134°, 138°].

[0171] Above, door 30 is opened from G6 to G max During the process, the first hinge axis 41 moves in an arc along the guide section 50 in a direction away from the door side wall 32 and the door rear wall 33, and the second hinge axis 42 moves in an arc along the guide trajectory line S in a direction close to the door side wall 32 and away from the door rear wall 33.

[0172] In some embodiments of this application, the door 30 is opened to the maximum angle G. max At this time, the first hinge shaft 41 is located at the end of the guide portion 50 near the front wall 31 and the side wall 32 of the door; the second hinge shaft 42 is located on the side of the first hinge shaft 41 away from the front wall 31.

[0173] As a configurable method, the door 30 opens to its maximum angle G. max At that time, in the projection of the top wall of the box 10 onto the plane, the angle between the axis line segment PQ and the door side wall 32 is less than 5°.

[0174] In the above order, 0° < G1 < G2 < G3 < G4 = 90° < G5 < G6 < G max The above G1, G2, G3, G4, G5, G6, G max The angles are sequentially referred to as the first angle, second angle, third angle, fourth angle, fifth angle, sixth angle, and maximum angle. It should also be noted that the limitations on the angle ranges in this invention are merely one possible configuration and not a definite limitation on the angles themselves. The names of the angles above are only a relative description in this embodiment and do not imply any limitation on the angles; for example, the "maximum angle" in this embodiment is not applicable to all possible implementations, and it does not mean that the maximum angle the door can open in all implementations is the same as described in this embodiment.

[0175] In summary, during the opening process of the door 30, the second midpoint I2 is the point where the distance between the center point I of the axis and the rear wall 33 of the door is the smallest during the opening process of the door 30.

[0176] Based on the above scenarios where the door 30 is opened to a specific angle, in this embodiment, when the door 30 is opened to its maximum angle G... max During the opening process, the first hinge axis 41 moves continuously relative to the guide part 50, and moves in a clockwise arc along the arc-shaped guide trajectory line S. The second hinge axis 42 also moves continuously relative to the guide part 50, and moves in a clockwise arc along the arc-shaped guide trajectory line S. In other words, throughout the entire opening process of the door 30, both the first hinge axis 41 and the second hinge axis 42 maintain unidirectional movement without reversing direction. This ensures that the force direction of the first hinge axis 41 and the second hinge axis 42 remains consistent throughout the opening process, resulting in a better feel for opening and closing the door and improving the user experience. Furthermore, it reduces wear and ensures the lifespan of the guide part 50. Moreover, since the first hinge axis 41 and the second hinge axis 42 maintain unidirectional arc movement throughout the entire opening process, there is no acceleration of stopping and re-moving during the entire opening process of the door 30, resulting in smoother movement of the door 30.

[0177] The above door 30 is opened from the closed state to the maximum angle G. max At that time, the motion trajectory of the guiding center axis P is arc P0P7, and the motion trajectory of the guiding center axis Q is arc Q0Q7; wherein, the first hinge axis 41 and the second hinge axis 42 move synchronously relative to the guiding trajectory line S, and the length of arc P0P7 is equal to the length of arc Q0Q7. The overlapping segment of the motion trajectories of the guiding center axis P and the guiding center axis Q is arc P0Q7; only the arc Q7P7 segment of the motion trajectory of the guiding center axis P and the arc Q0P0 segment of the motion trajectory of the guiding center axis Q are unique to each type, and there is no overlap. As a settable method, the length of the overlapping part of the motion trajectories of the two axes, arc P0Q7, is denoted as Z. cThe length of the motion trajectory of the guiding center axis P (guiding center axis Q) is denoted as Z, where Z c Z belongs to any value between 0.5 and 0.9. In this invention, during the opening process of the door 30, most of the movement trajectories of the guide center axis P and the guide center axis Q coincide. The two hinge axes fully utilize the same guide portion 50, resulting in a more compact structure that meets the requirements of thin-sized (less than 30mm) door bodies 30. Furthermore, in this invention, the first hinge axis 41 and the second hinge axis 42 are arranged adjacent to each other, moving under the guidance of the guide portion 50 with an arc-shaped guide trajectory line S. The consistency of movement between the first hinge axis 41 and the second hinge axis 42 is more unified, and the movement is more coordinated and smooth.

[0178] In some embodiments of this application, the position of the first hinge member relative to the second hinge member is considered when the door 30 is in the closed state and opened to G2 or G5. Within the plane of the top wall of the housing, when the door 30 is closed, the guide center axis Q is located at the starting guide point Q0 of the guide trajectory line S.

[0179] When the door is opened to G5, the guiding center axis P is located at the fifth guiding point P5 on the guiding trajectory line S; wherein, the line segment P5Q0 where the fifth guiding point P5 and the starting guiding point Q0 are located is parallel to the front wall 31 of the door;

[0180] The point at which the guide trajectory line S is furthest from the front wall 31 is the first guide point P1; the straight line passing through the first guide point P1 and parallel to the side wall is the first straight line K1;

[0181] When the door is opened to G2 = G5 / 2, the guide center axis Q is located at the second guide point Q2 on the guide trajectory line, and the guide center axis P is located at the second guide point P2 on the guide trajectory line S; wherein, the first straight line K1 perpendicularly bisects the line segment P2Q2. The hinge assembly with the above trajectory characteristics can effectively detect the assembly and processing accuracy through the relationship between the above three positions after the door 30 and the housing 10 are installed together, thereby enabling timely detection and adjustment of problems to achieve high-precision matching between the second hinge component on the door 30 and the first hinge component on the housing 10, meeting the complex motion requirements of finely controlling the door 30 to complete rotation and inward movement. Furthermore, the hinge assembly with the above trajectory characteristics ensures that the line containing the maximum distance between the center point I of the axis and the front wall 31 and the maximum distance between the guide trajectory line S and the front wall 31 is perpendicular to the front wall 31; the movement of the guide trajectory line S is consistent with that of the center point I of the axis, and the points where its extension trend changes are also synchronized, increasing the coordination of the movement of the first hinge axis 41 and the second hinge axis 42 relative to the guide part 50. As a configurable method, when G2 = γ, the first straight line K1 perpendicularly bisects line segment P2Q2. It also possesses detectability, effectively ensuring assembly accuracy to meet the requirements of refined control.

[0182] Based on the positions of the two limiting axes (first hinge axis 41 and second hinge axis 42) relative to the limiting part (guide part 50) when the door 30 is opened to a specific angle, it can be seen that the cooperation relationship between the first hinge axis 41 and the guide part 50 is as follows:

[0183] During the process of opening the door 30 from the closed state to G1, the first hinge axis 41 and the second hinge axis 42 move in the same direction, and both hinge axes move along the guide part 50 towards the door side wall 32 and the door rear wall 33.

[0184] During the process of opening the door 30 from G1 to G3, the first hinge axis 41 and the second hinge axis 42 move in different directions; the first hinge axis 41 moves along the guide portion 50 towards the door side wall 32 and away from the door rear wall 33, and the second hinge axis 42 moves along the guide portion 50 towards the door side wall 32 and the door rear wall 33.

[0185] During the process of the door 30 opening from G3 to G6, the first hinge axis 41 and the second hinge axis 42 move in the same direction, and both hinge axes move along the guide part 50 towards the door side wall 32 and away from the door rear wall 33.

[0186] Door 30 is opened from G6 to G max During the process, the first hinge axis 41 and the second hinge axis 42 move in different directions; the first hinge axis 41 moves along the guide portion 50 away from the door side wall 32 and the door rear wall 33, and the second hinge axis 42 moves along the guide portion 50 towards the door side wall 32 and away from the door rear wall 33.

[0187] Combination Figures 5-22 The relative movement of these two stages will be explained below from the perspective of the cooperation relationship between the first hinge shaft 41 and the guide portion 50, and between the second hinge shaft 42 and the guide portion 50:

[0188] (1) The first stage, combined with Figures 5-6 , Figures 14-16 As shown, the process of the door 30 rotating from the closed state to G1.

[0189] In this first stage, the door 30 opens from 0° to G1. During this process, the guide center axis P moves along the arc-shaped guide trajectory line S from the starting guide point P0 in an arc with a radius of r towards the door side wall 32 and the door rear wall 33; the guide center axis Q moves along the guide trajectory line S from the starting guide point Q0 in an arc with a radius of r towards the door side wall 32 and the door rear wall 33. Therefore, during the process of the door 30 opening from the closed state to the first angle G1, relative to the door 30, both the first hinge axis 41 and the second hinge axis 42 move away from the front wall 31.

[0190] Specifically, the guide center axis P moves from the starting guide point P0 along the guide trajectory line S to the first guide point P1; the guide center axis Q moves from the starting guide point Q0 along the guide trajectory line S to the first guide point Q1.

[0191] During the opening process in the first stage described above, taking the second hinge component (guide part 50) as a reference, as the door 30 opens from 0° to G1, the axis line segment PQ rotates clockwise from P0Q0 and moves towards the door side wall 32 and the door rear wall 33 to P1Q1; that is, the movement trend of the axis line segment PQ is P0Q0→P1Q1. At the same time, the movement trend of the axis center point I as the axis line segment PQ moves is I0→I1; that is, during the opening process of the door 30, relative to the door 30, the axis center point I moves towards the door side wall 32 and the door rear wall 33.

[0192] In summary, during the process of opening the door 30 from the closed state to G1, with the door 30 (second hinge member) as the reference frame, the housing 10 relative to the door 30 has a displacement along a direction parallel to the rear wall 33 and pointing towards the side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing towards one side of the rear wall 33. That is, the movement displacement of the housing 10 relative to the door 30 is decomposed into a displacement along a direction parallel to the rear wall 33 and pointing towards the side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing towards the rear wall 33.

[0193] Based on the relativity of motion, taking the housing 10 as a reference frame, during the process of the door 30 opening from the closed state to G1, the door 30 has a displacement relative to the housing 10 along a direction parallel to the rear wall 33 and pointing away from its side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing away from its rear wall 33. That is, relative to the housing 10, the displacement of the door 30 is decomposed into a displacement along a direction parallel to the rear wall 33 and away from the side wall 32, and a displacement along a direction parallel to the side wall 32 and away from the rear wall 33. For ease of explanation, in the displacement decomposition relative to the housing 10, the displacement of the door 30 along the direction parallel to the rear wall 33 is denoted as the first direction displacement. The displacement along the direction parallel to the side wall 32 of the door is denoted as the second direction displacement. During the opening process in the first stage, the displacement in the first direction... Displacement in the second direction: 32 degrees away from the side wall of the door. 33 degrees away from the back wall of the door.

[0194] (2) The second stage, combined with Figures 6-8 , Figure 14 and Figures 16-18 As shown, the door 30 is rotated open from G1 to G3.

[0195] In this second stage, the door 30 opens from G1 to G3. During this process, the guide center axis P moves from the first guide point P1 along the arc-shaped guide trajectory line S in an arc with radius r towards the door side wall 32 and away from the door rear wall 33; the guide center axis Q moves from the first guide point Q1 along the guide trajectory line S in an arc with radius r towards both the door side wall 32 and the door rear wall 33. That is, during the process of the door 30 opening from the first angle G1 to the third angle G3, relative to the door 30, the first hinge axis 41 moves towards the door front wall 31, and the second hinge axis 42 moves away from the door front wall 31.

[0196] Specifically, the guide center axis P moves from the first guide point P1 along the guide trajectory line S, passing through the second guide point P2, to the third guide point P3; the guide center axis Q moves from the first guide point Q1 along the guide trajectory line S, passing through the second guide point Q2, to the third guide point Q3.

[0197] During the second stage of opening, with the second hinge (guide part 50) as a reference, as the door 30 opens from G1 to G3, the axis line segment PQ rotates clockwise from P1Q1 and first moves towards the door side wall 32 and the door rear wall 33 to P2Q2, and then moves towards the door side wall 32 and away from the door rear wall 33 to P3Q3; during this process, the axis line segment PQ moves from P1Q1 through P2Q2 to P3Q3; that is, the movement trend of the axis line segment PQ is P1Q1→P2Q2→P3Q3. Meanwhile, the movement trend of the central point I as the central line segment PQ moves is I1→I2→I3; that is, during the opening of the door 30, relative to the door 30, the central point I first moves towards the door side wall 32 and the door rear wall 33, and then moves towards the door side wall 32 and away from the door rear wall 33; among them, when the door 30 is opened to G2, the central line segment PQ is parallel to the door front wall 31, and the distance between the central point I and the door rear wall 32 is the smallest.

[0198] In summary, the movement trend of the central point I of the door 30 during the process of opening from G1 to G2 is consistent with the movement trend of the central point I of the door 30 during the process of opening from the closed state to G1, both moving towards the side wall 32 and the rear wall 33 of the door.

[0199] Based on the analysis of the motion displacement of door 30 relative to box 10 during the opening process of door 30 in the first stage, it can be similarly concluded that during the process of door 30 opening from G1 to G2, in the displacement decomposition of door 30 relative to box 10, door 30 has a first direction displacement along a direction parallel to the rear wall 33 of the door and pointing away from the side wall 32 of the door. Displacement along a second direction parallel to the side wall 32 of the door and pointing away from the rear wall 33 of the door. Since the displacement of the door 30 during the process of opening from G1 to G2 is the same as in the first stage, it will not be described again here.

[0200] Based on the movement and displacement of the door 30 relative to the box during the opening process of the door 30 in the first stage, the relative movement of the door 30 and the box 10 during the process of the door 30 opening from G2 to G3 is explained;

[0201] Based on the above description of the second stage of motion, during the process of the door 30 opening from G2 to G3, with the door 30 (the second hinge component) as the reference frame, the housing 10 relative to the door 30 has a displacement along a direction parallel to the rear wall 33 and pointing towards the side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing away from the rear wall 33. In other words, the displacement of the housing 10 relative to the door 30 can be decomposed into a displacement along a direction parallel to the rear wall 33 and pointing towards the side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing away from the rear wall 33.

[0202] Based on the relativity of motion, taking the housing 10 as a reference frame, during the opening of the door 30 from G2 to G3, the door 30 has a displacement relative to the housing 10 along a direction parallel to the rear wall 33 and pointing away from its side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing away from its rear wall 33. That is, relative to the housing 10, the displacement of the door 30 is decomposed into a displacement along a direction parallel to the rear wall 33 and pointing away from its side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing away from its rear wall 33. In other words, relative to the housing 10, in the displacement decomposition of the door 30, the door 30 has a first directional displacement along a direction parallel to the rear wall 33 and pointing away from its side wall 32. Displacement along a second direction parallel to the side wall 32 of the door and pointing towards the rear wall 33 of the door.

[0203] (3) The third stage, combined with Figures 8-11 , Figure 14 and Figures 18-21 As shown, the door 30 is rotated open from G3 to G6.

[0204] In this third stage, the door 30 opens from G3 to G6. During this process, the guide center axis P moves from the third guide point P3 along the arc-shaped guide trajectory line S in an arc with radius r towards the door side wall 32 and away from the door rear wall 33; the guide center axis Q moves from the third guide point Q3 along the guide trajectory line S in an arc with radius r towards the door side wall 32 and away from the door rear wall 33. That is, during the process of the door 30 opening from the third angle G3 to the sixth angle G6, relative to the door 30, the first hinge axis 41 and the second hinge axis 42 simultaneously move towards the front wall 31 and the side wall 32 of the door.

[0205] Specifically, the guide center axis P moves from the third guide point P3 along the guide trajectory line S, passing through the fourth guide point P4 and the fifth guide point P5, to the sixth guide point P6; the guide center axis Q moves from the third guide point Q3 along the guide trajectory line S, passing through the fourth guide point Q4 and the fifth guide point Q5, to the sixth guide point Q6.

[0206] During the opening process in the third stage described above, taking the second hinge component (guide part 50) as a reference, as the door 30 opens from G3 to G6, the axis segment PQ rotates clockwise from P3Q3 and moves sequentially towards the side wall 32 and away from the rear wall 33, to P4Q4, P5Q5, and P6Q6; that is, the movement trend of the axis segment PQ is P3Q3→P4Q4→P5Q5→P6Q6. At the same time, the movement trend of the central point I along with the axis segment PQ is I3→I4→I5→I6; that is, during the opening process of the door 30, relative to the door 30, the central point I moves towards the side wall 32 and away from the rear wall 33.

[0207] In summary, during the process of the door 30 opening from G3 to G6, with the door 30 (the second hinge component) as the reference frame, the housing 10 relative to the door 30 has a displacement along a direction parallel to the rear wall 33 pointing towards the side wall 32 and a displacement along a direction parallel to the side wall 32 pointing away from the rear wall 33. That is, the movement displacement of the housing 10 relative to the door 30 is decomposed into a displacement along a direction parallel to the rear wall 33 pointing towards the side wall 32 and a displacement along a direction parallel to the side wall 32 pointing away from the rear wall 33.

[0208] Based on the relativity of motion, taking the housing 10 as a reference frame, during the opening of the door 30 from G3 to G6, the door 30 has a displacement relative to the housing 10 along a direction parallel to the rear wall 33 and pointing away from its side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing towards its rear wall 33. That is, relative to the housing 10, the displacement of the door 30 is decomposed into a displacement along a direction parallel to the rear wall 33 and pointing away from the side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing towards the rear wall 33. In other words, relative to the housing 10, in the displacement decomposition of the door 30, the door 30 has a first directional displacement along a direction parallel to the rear wall 33 and pointing away from the side wall 32. Displacement along a second direction parallel to the side wall 32 of the door and pointing towards the rear wall 33 of the door.

[0209] (4) The fourth stage, combined with Figures 11-12 ,like Figure 14 and Figures 21-22 As shown, door 30 is rotated open from G6 to G... max The process.

[0210] Door 30 is opened from G6 to Gmax During the opening process, the guide center axis P moves in an arc from the sixth guide point P6 along the guide trajectory line S toward the direction away from the door side wall 32 and the door rear wall 33; the guide center axis Q moves in an arc from the sixth guide point Q6 along the guide trajectory line S toward the direction close to the door side wall 32 and away from the door rear wall 33.

[0211] Specifically, the guide center axis P moves from the sixth guide point P6 along the guide trajectory line S to the seventh guide point P7; the guide center axis Q moves from the sixth guide point Q6 along the guide trajectory line S to the seventh guide point Q7.

[0212] During the opening process in the fourth stage above, with the second hinge component (guide part 50) as the reference, the door body 30 opens from G6 to G... max During the process, the axis segment PQ rotates clockwise from P6Q6 and moves away from the door side wall 32 and the door rear wall 33 to P7Q7; that is, the movement trend of the axis segment PQ is P6Q6→P7Q7. At the same time, the movement trend of the central point I along with the axis segment PQ is I6→I7; that is, during the opening of the door 30, relative to the door 30, the central point I moves towards the door side wall 32 and away from the door rear wall 33.

[0213] In summary, door 30 is opened from G6 to G max During the process, with the door 30 (second hinge component) as a reference, the housing 10 relative to the door 30 has a displacement along a direction parallel to the rear wall 33 and pointing towards the side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing away from the rear wall 33. In other words, the movement displacement of the housing 10 relative to the door 30 is decomposed into a displacement along a direction parallel to the rear wall 33 and pointing towards the side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing away from the rear wall 33.

[0214] Based on the relativity of motion, taking the box 10 as a reference frame, the door 30 opens from G6 to G... max During the process, the door 30 has a displacement relative to the housing 10 along a direction parallel to the rear wall 33 and pointing away from the side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing towards the rear wall 33; that is, relative to the housing 10, the displacement of the door 30 is decomposed into a displacement along a direction parallel to the rear wall 33 and pointing away from the side wall 32, and a displacement along a direction parallel to the side wall 32 and pointing towards the rear wall 33. Specifically, relative to the housing 10, in the displacement decomposition of the door 30, the door 30 has a first directional displacement along a direction parallel to the rear wall 33 and pointing away from the side wall 32. Displacement along a second direction parallel to the side wall 32 of the door and pointing towards the rear wall 33 of the door.

[0215] It should be further explained that "the direction pointing to the side wall 32" refers to the direction from the end of the door body 30 opposite to the side wall 32 to the side wall 32; "the direction pointing away from the side wall 32" refers to the direction from the side wall 32 to the end of the door body 30 opposite to the side wall 32.

[0216] "The direction pointing to the back wall 33" refers to the direction from the front wall 31 to the back wall 33; "The direction pointing away from the back wall 33" refers to the direction from the back wall 33 to the front wall 31.

[0217] Based on the first to fourth stages of the movement of the door 30, relative to the housing 10, the door 30 opens from the closed state to G. max During the process, the door 30 has a first direction displacement parallel to the rear wall 33 of the door. Second direction displacement parallel to the door sidewall 32 During different opening stages of the door 30, the displacement in the first direction Second direction displacement The direction can vary. Specifically, as a configurable method, during the opening of the door 30, the displacement in the first direction... The direction remains unchanged, while the second direction is displaced. The direction of displacement can be either away from the rear wall 33 of the door or towards the rear wall 33 of the door. It should be noted that the displacement in the first direction mentioned above... Second directional displacement All of these are instantaneous relative displacements, used to illustrate the current direction of movement of the door 30 relative to the box 10.

[0218] Specifically, during the process of opening the door 30 from the closed state to G2 (<90°), in the displacement decomposition of the door 30 relative to the housing 10, the door 30 has a first directional displacement along a direction parallel to the rear wall 33 and pointing away from the side wall 32. Displacement along a second direction parallel to the side wall 32 of the door, pointing away from the rear wall 33 of the door.

[0219] Door 30 is opened from G2 to G max During the process of (>90°), relative to the housing 10, in the displacement decomposition of the door 30, the door 30 has a first directional displacement along a direction parallel to the rear wall 33 and pointing away from the side wall 32. Displacement along a second direction parallel to the side wall 32 of the door and pointing towards the rear wall 33 of the door.

[0220] See Figures 23-27As shown; within the plane of the top wall of the housing 10, a displacement coordinate system AOB is established on the side of the housing 10 closest to the door 30. Specifically, in the displacement coordinate system AOB, OB is perpendicular to the plane of the pick-up / placement opening, and B is located on the side of O away from the pick-up / placement opening (front side); OA is parallel to the plane of the pick-up / placement opening, and A is located on the side of O away from the side wall of the second body (outer side). That is, in the displacement coordinate system AOB, the direction from the side wall of the second body to the side wall of the first body is positive, and the direction from the pick-up / placement opening to the front wall 31 of the door 30 when it is closed (from back to front) is positive. It should be noted that during the opening of the door 30, the displacement coordinate system AOB remains stationary relative to the housing 10 and does not move with the opening of the door 30.

[0221] (1) As Figures 5-9 As shown, during the process of the door 30 opening from the closed state to 90°, as the door 30 rotates counterclockwise relative to the housing 10, the door side wall 32, the door rear wall 33, and the door front wall 31 also rotate counterclockwise during this opening phase. In the plane of the top wall of the housing 10, the door side wall 32 extends outward and forward along the direction from the second side edge N to the first side edge W (the door rear wall 33 points to the door front wall 31); the door rear wall 33 extends inward and forward along the direction from the door side wall 32 to the end of the door 30 opposite to the door side wall 32.

[0222] During the opening process described above (opening from the closed state to 90°), the door sidewall 32, initially parallel to the reference plane M0, rotates counterclockwise. The angle between the door sidewall 32 and the plane containing the retrieval opening gradually decreases, while the angle between the door sidewall 32 and the reference plane M0 gradually increases. That is, as the door 30 opens from the closed state to 90°, relative to the housing 10, along the direction from the second side edge N to the first side edge W, the door sidewall 32 extends away from the second sidewall and the retrieval opening. Simultaneously, the angle between the door rear wall 33 and the plane containing the retrieval opening gradually increases, while the angle between the door rear wall 33 and the reference plane M0 gradually decreases. That is, as the door 30 opens from the closed state to 90°, relative to the housing 10, along the direction from the door sidewall 32 to the end of the door 30 opposite to the door sidewall 32, the door rear wall 33 extends away from the first sidewall and the retrieval opening.

[0223] (1.1) Based on the description of the displacement direction of the door 30 relative to the box 10 during the process of the door 30 opening from the closed state to G2 (G2 < 90°), it can be seen that: during the process of the door 30 opening from the closed state to 90°, with the box 10 as the reference, the first direction of the displacement of the door 30 is parallel to the rear wall 33 of the door. The direction pointing away from the side wall 32 of the door, i.e., the first direction displacement. The door 30 is displaced in a second direction parallel to the door sidewall 32, pointing towards the inner front side of the housing 10 (inward and forward side); The direction pointing away from the rear wall 33 of the door, i.e., the second direction displacement. Pointing to the outer front side (outward and forward side) of housing 10.

[0224] like Figures 23-24 As shown, in the displacement coordinate system AOB, during the process of the door 30 opening from the closed state to G2, the first direction displacement of the door 30 is... Located in the second quadrant (A < 0, B > 0), displacement in the second direction Located in the first quadrant (A>0, B>0). Displacement in the first direction. Second direction displacement Displacement decomposition is performed on the A-axis and B-axis respectively; displacement in the first direction The displacement component on axis A is The displacement along the B-axis is Second directional displacement The displacement component on axis A is The displacement along the B-axis is Among them, the trajectory feature settings of the present invention include Then there is, That is, during the process of the door 30 opening from the closed state to G2, in the displacement coordinate system AOB, the door 30 has a first component displacement. Second displacement Therefore, it can be concluded that: relative to the box 10, the door 30 has a tendency to move in the negative direction of the A axis and in the positive direction of the B axis, that is, the door 30 has a tendency to move inward and forward; that is, during the process of the door 30 opening from the closed state to G2 (G2 < 90°), the door 30 has a tendency to move inward and forward relative to the box 10.

[0225] (1.2) Based on the aforementioned description of the displacement direction of the door 30 relative to the box 10 during the process of the door 30 opening from G2 (G2 < 90°) to G4 = 90°, it can be concluded that during the process of the door 30 opening from G2 to 90°, with the box 10 as the reference frame, the first direction of the displacement of the door 30 is parallel to the rear wall 33 of the door. The direction pointing away from the side wall 32 of the door, i.e., the first direction displacement. The door 30 is displaced in a second direction parallel to the door sidewall 32, pointing towards the inner front side of the housing 10 (inward and forward side); The direction pointing towards the rear wall 33 of the door (from the front wall 31 towards the rear wall 33 of the door), i.e., the displacement in the second direction. Pointing to the inner rear side (inward and rearward side) of housing 10.

[0226] like Figure 23 and Figure 25As shown, in the displacement coordinate system AOB, during the process of the door 30 opening from G2 (G2 < 90°) to 90°, the first direction displacement of the door 30 is... Located in the second quadrant (A < 0, B > 0), displacement in the second direction Located in the third quadrant (A < 0, B < 0). Displacement in the first direction. Second direction displacement Displacement decomposition is performed on the A-axis and B-axis respectively; displacement in the first direction The displacement component on axis A is The displacement along the B-axis is Second directional displacement The displacement component on axis A is The displacement along the B-axis is Among them, the trajectory feature settings of the present invention include Then there is, That is, during the process of the door 30 opening from the closed state to 90°, in the displacement coordinate system AOB, the door 30 has a first component displacement. Second displacement Therefore, it can be concluded that: relative to the box 10, the door 30 has a tendency to move in the negative direction of the A axis and in the positive direction of the B axis, that is, the door 30 has a tendency to move inward and forward; that is, during the process of the door 30 opening from G2 (G2 < 90°) to 90°, the door 30 has a tendency to move inward and forward relative to the box 10.

[0227] (2) Figure 9 As shown, when the door 30 is opened to 90°, the door side wall 32 is parallel to the plane where the retrieval opening is located and perpendicular to the reference plane M0; at this time, the door rear wall 33 is parallel to the reference plane M0 and perpendicular to the plane where the retrieval opening is located. 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 32 extends from the inside to the outside.

[0228] Based on the description of the displacement direction of door 30 relative to box 10 during the opening process of door 30 in stages one through four, it can be concluded that when door 30 is opened to 90°, with box 10 as the reference frame, the displacement of door 30 in the first direction is parallel to the rear wall 33 of the door. The direction pointing away from the side wall 32 of the door, i.e., the first direction displacement. The door 30 is displaced in a second direction parallel to the front of the housing 10; the door 30 is parallel to the door side wall 32. The direction pointing towards the rear wall 33 of the door (from the front wall 31 towards the rear wall 33 of the door), i.e., the displacement in the second direction. Pointing to the inside of housing 10.

[0229] like Figure 26As shown, in the displacement coordinate system AOB, the first direction displacement of the door body 30 is... Displacement along the B-axis and pointing in the positive direction of the B-axis, in the second direction. Displacement along axis A and pointing in the negative direction of axis A. First direction displacement. The displacement component on axis A is The displacement along the B-axis is Second directional displacement The displacement component on axis A is The displacement along the B-axis is in, That is, when the door 30 is opened to 90°, in the displacement coordinate system AOB, the door 30 has a first component displacement. Second displacement Therefore, it can be concluded that: relative to the box 10, the door 30 has a tendency to move in the negative direction of the A axis and in the positive direction of the B axis, that is, the door 30 has a tendency to move inward and forward; that is, when the door 30 is opened to 90°, the door 30 has a tendency to move inward and forward relative to the box 10.

[0230] (3) Figures 9-12 As shown, when the door 30 is rotated open from 90° to G... max During the process, as the door 30 rotates counterclockwise relative to the housing 10, the door sidewall 32 also rotates counterclockwise during the opening process. In the plane where the top wall of the housing 10 is located, the door sidewall 32 extends outward and backward along the direction from the second side edge N to the first side edge W; the door rear wall 33 extends outward and forward along the direction from the door sidewall 32 to the end of the door 30 opposite to the door sidewall 32.

[0231] During the opening process described above, the door side wall 32 begins to rotate counterclockwise from a position perpendicular to the reference plane M0. The angle between the door side wall 32 and the plane containing the retrieval opening gradually increases, while the angle between the door side wall 32 and the reference plane M0 gradually decreases. That is, as the door body 30 rotates open from 90° to G... max During the process, relative to the housing 10, along the direction from the second side edge N to the first side edge W, the door sidewall 32 extends away from the second sidewall and closer to the access opening. Simultaneously, the angle between the door rear wall 33 and the plane containing the access opening gradually decreases, while the angle between it and the reference plane M0 gradually increases; that is, as the door 30 rotates open from 90° to G... max During the process, relative to the box 10, along the direction from the door side wall 32 to the end of the door body 30 opposite to the door side wall 32, the rear wall 33 of the door extends away from the second body side wall and the loading and unloading port.

[0232] In this embodiment, G2 < G4 = 90°; combined with the displacement in the first direction in the previous analysis from the first to the fourth stages. Second direction displacement The following description refers to the opening of door 30 from 90° to G. max The process will be explained. As can be seen above: when the door 30 opens from 90° to G... max During the process (90° < G5), with the box body 10 as the reference, the door body 30 and the rear wall 33 of the door are parallel to each other in the first direction of displacement. The direction pointing away from the side wall 32 of the door, i.e., the first direction displacement. The outer front side (outward and forward side) of the housing 10; the second direction displacement of the door 30 parallel to the door side wall 32. The displacement is 33 towards the back wall of the door, which is the second direction. Pointing to the inner front side (inward and forward side) of housing 10.

[0233] like Figure 27 As shown, in the displacement coordinate system AOB, the door 30 opens from 90° to G. max During the process, the first direction displacement of the gate 30 Located in the first quadrant (A>0, B>0), displacement in the second direction Located in the second quadrant (A < 0, B > 0). Displacement in the first direction. Second direction displacement Displacement decomposition is performed on the A-axis and B-axis respectively; displacement in the first direction The displacement component on axis A is The displacement along the B-axis is Second directional displacement The displacement component on axis A is The displacement along the B-axis is Among them, the trajectory feature settings of the present invention include Then there is, That is, in the displacement coordinate system AOB, the gate body 30 has a first component displacement. Second displacement Therefore, it can be concluded that: relative to the housing 10, the door 30 has a tendency to move along the negative direction of axis A and towards the positive direction of axis B, that is, the door 30 has a tendency to move inward and forward; that is, the door 30 opens from 90° to G... max During the process, the door 30 tends to move inward and forward relative to the box 10.

[0234] In summary, door 30 opens from the closed state to G. max Throughout the process, the door 30 maintains an inward and forward tendency relative to the box 10.

[0235] Additionally, it should be noted that, under the trajectory features defined in this invention, the door 30 opens from a closed state to 90° and from 90° to the maximum angle G. max During the process, displacement in the first direction Second direction displacement The relative relationship of the modulus changes with the opening angle of the door 30, but it does not affect the relative relationship of the displacement components in the displacement coordinate system AOB in the above stages, and thus does not affect the motion trend of the door 30 under the trajectory characteristics of the present invention.

[0236] It should be noted that this implementation only refers to some angles within the range of 0 to 90°, 90°, and 90° to G. max Some angles within the range are used as representatives to illustrate the overall movement trend, but they can represent the movement trend within the corresponding range. This demonstrates that the hinge assembly with the above trajectory characteristics of the present invention can make the door 30 move inward and forward throughout the entire opening process. This effectively compensates for the outward displacement of the first side edge W caused by the simple rotation of the door 30, limiting the distance of the first side edge W beyond the reference plane M0 to no more than μ, effectively avoiding interference between the door 30 and the cabinet 100 when it is opened, further reducing the limitation of the cabinet 100 space on the size of the refrigerator that can be accommodated, and improving the utilization rate of the cabinet 100 space. At the same time, in the present invention, the door 30 moves inward and forward a certain distance while opening, so that the door 30 quickly moves away from the cabinet body, avoiding squeezing the door seal 20. In addition, in the present invention, the door 30 maintains inward movement throughout the opening process, which can reduce the limitation of the cabinet 100 on the maximum opening angle of the door 30, thereby making the maximum opening angle of the door 30 larger. Similarly, the forward movement of the door 30 during opening reduces the restriction imposed by the cabinet 100 on the maximum opening angle of the door 30, thus allowing the door 30 to open to a greater maximum angle. In this invention, the door 30 can be configured to move inward and forward simultaneously during opening, which more effectively reduces the restriction imposed by the cabinet 100 on the maximum opening angle of the door 30, so that the maximum opening angle of the door 30 under the above-mentioned trajectory feature configuration is not limited by the cabinet 100.

[0237] Based on the movement of the door 30 during the opening process described above, the door 30 opens from the closed state to G. max Throughout the process, the door 30 rotates around a dynamically changing point (the movement trend of the center point I is I0→I1→I2→I3→I4→I5→I6→I7) that moves relative to the door 30 towards the door side wall 32. Specifically, the center point I first moves towards the door side wall 32 and the door rear wall 33 relative to the door 30, and then moves towards the door side wall 32 and away from the door rear wall 33, thus ensuring that the door 30 moves outward and forward relative to the housing 10 throughout the entire process. The distance between the center point I and the door rear wall 33 is minimized when the door 30 is opened to G2.

[0238] In this embodiment, since the guide trajectory line S is an arc and the length of the axis line segment PQ is a constant, in the plane projection of the top wall of the box 10, during the opening of the door 30, the center point I of the axis moves along the arc, and the circular trajectory it forms is concentric with the guide trajectory line S.

[0239] In some embodiments of this application, the trajectory line can be set (e.g., increasing the length of the guide trajectory line S near the side wall 32 of the door) so that during the opening of the door 30, the central point I relative to the door 30 moves first towards the side wall 32 and the rear wall 33 of the door, then towards the side wall 32 and away from the rear wall 33, and then away from the side wall 32 and the rear wall 33 of the door.

[0240] In conjunction with the aforementioned description of the door 30 opening process, the following comparison will be made between the position of the door 30 rotating from the previous state around the midpoint of the axis segment PQ relative to the door 30 to the adjacent next state (angle) and the position of the door 30 in the aforementioned adjacent next state in this invention, so as to illustrate the movement trend of the door 30 relative to its previous state during the opening process.

[0241] Combination Figures 28-34 As shown, assuming the door 30 rotates around the center point I of the previous state to the position of the adjacent subsequent state (the door 30 is represented by a dashed line), during this movement, the rotation center of the door 30 remains fixed relative to the door 30; then, under this movement trend, when the door 30 is opened, the first side edge W is located at W' relative to the box 10; the second side edge N is located at N' relative to the box 10; and the side sealing edge F is located at F' relative to the box 10. Figure 28 In the diagram, the position of the door 30 indicated by the dashed line is the position reached when the door 30 is simply rotated to G1 relative to the midpoint I (I0) of the axis segment PQ of the door 30 when the door 30 is closed; the position of the door 30 indicated by the solid line is the position reached when the door 30 is rotated open to G1 according to the setting method of the present invention. Figure 29 In the diagram, the dashed line indicates the position of door 30, which is the position reached when door 30 is opened to G1 using the rotation method of this invention, and then rotated to G2 with door 30 as the center point I (the center point I (I1) of the previous state) relative to the axis of door 30 in G1; the solid line indicates the position of door 30, which is the position reached when it is opened to G2 using the rotation method of this invention; similarly... Figures 30-34 This is a diagram comparing the positions of the two different opening methods described above at different opening angles.

[0242] Comparing the configuration of this invention (the door 30 rotates throughout its entire length around a point that remains dynamically changing relative to the door 30) with the method of simply rotating the door 30 around its previous axis center point I, it can be seen that:

[0243] Door 30 opens from the closed state to G max During the process, in this application, the position W of the first side edge is always located on the side of W' that is closer to the side wall of the second body and farther away from the retrieval opening; the position N of the second side edge is always located on the side of N' that is closer to the side wall of the second body and farther away from the retrieval opening; the position F of the side sealing edge is always located on the side of F' that is closer to the side wall of the second body and farther away from the retrieval opening. That is, the door 30 is opened from the closed state to G. max During the process, the door 30 tends to move inward and forward. It should be noted that the comparison between the current position of the door 30 in this invention and the assumed position of the door 30 when it is simply rotated from the previous state around the axis center point I to the opening angle of the door 30 in this invention is representative. It can represent the movement trend of the door 30 relative to the previous state during the opening process of the door 30. Here, only some selected angles are used for comparison and explanation to illustrate the movement trend of the door 30 when it is opened.

[0244] In some embodiments of this application, the hinge assembly having the above-mentioned trajectory characteristics is configured such that the door 30 is displaced in the second direction during the process of opening from the closed state to 90°. The door 30 is moved from the first quadrant of the displacement coordinate system AOB to the third quadrant, which further increases the speed at which the door 30 moves inward from opening to 90° from G2. This allows for faster and greater compensation for the outward displacement of the first side edge W caused by simple rotation, effectively preventing interference between the first side edge W and the cabinet 100 during the opening process of the door 30.

[0245] Furthermore, with the hinge assembly exhibiting the aforementioned trajectory characteristics, the door 30 undergoes a second-direction displacement during the opening process from the closed state to G2. Located in the first quadrant of the displacement coordinate system AOB, displacement in the first direction Located in the second quadrant of the displacement coordinate system AOB, it effectively ensures the displacement of the door 30 along the positive direction of the B axis when it opens, so that the door 30 can move forward quickly when it opens, effectively avoiding squeezing the door seal 20.

[0246] It should be noted that the movement of the first hinge axis 41 and the second hinge axis 42 relative to the guide part 50 can achieve the purpose of the door body 30 moving inward in each stage; the length of the guide trajectory line S mentioned above is not limited to having all stages; it can be set to have at least one stage of movement characteristics.

[0247] In some embodiments of this application, when the door 30 is in the closed state, the centroid plane C is located between the guide center axis P and the guide center axis Q in the projection of the plane where the top wall of the box is located, which makes the force condition of the door 30 in the closed state better and makes the door 30 maintain a stable state in the long-term closed state.

[0248] In some embodiments of this application, the door 30 is opened to the maximum angle G. max At that time, in the projection of the plane containing the top wall of the box, the center of mass plane C is located between the guide center axis P and the guide center axis Q, which improves the force condition of the door 30 when it is in the closed state and ensures that the door 30 is opened to the maximum angle G. max Stability.

[0249] It should be noted that the above-mentioned settings, movement stages, and displacement relationships under the constraints of circular arcs are applicable to non-circular arc guide lines S, and are applicable to guide lines S with the above-mentioned extension trends of the trajectory lines relative to the X and Y axes in the XOY coordinate system of the door body 30.

[0250] In some embodiments of this application, combined with Figures 5-13 As shown, a first reference plane M1 and a second reference plane M2 are also defined. (See also...) Figure 13 As shown, the first reference plane M1 is a plane parallel to the reference plane M0 and perpendicular to the plane containing the retrieval opening. The first reference plane M1 is the intermediate plane between the side wall of the first body and the side wall of the second body; that is, the first reference plane M1 is parallel to the side wall of the first body, and its distance from the side wall of the first body is equal to its distance from the side wall of the second body. The second reference plane M2 is the plane containing the retrieval opening of the storage compartment. The first reference plane M1 and the second reference plane M2 do not move during the opening of the door 30 relative to the box 10; they are reference planes that remain stationary relative to the box 10.

[0251] During the opening of the door 30, the first side edge W moves along with the opening of the door 30, and its trajectory is recorded as the trajectory line of the first side edge. In the projection of the top wall of the box 10, during the opening of the door 30, the first side edge W first moves away from the first reference plane M1 and closer to the second reference plane M2, and then moves closer to the first reference plane M1 and the second reference plane M2.

[0252] As a configurable method, in the projection on the top wall of the enclosure 10, the door 30 is shown to open from the closed state to G. max During this process, the first side edge W moves along an arc. That is, in the projection of the top wall of the box 10, the door 30 opens from the closed state to G. max During the process, the trajectory formed by the movement of the first side edge W is an arc. The hinge assembly with these trajectory characteristics can effectively detect assembly and machining accuracy through the movement trajectory characteristics of the first side edge W after the door 30 and the housing 10 are installed together. This allows for timely detection and adjustment of problems, achieving a high-precision fit between the second hinge component on the door 30 and the first hinge component on the housing 10, thus meeting the complex movement requirements of finely controlling the door 30 to rotate and move inward.

[0253] As a configurable method, when the distance between the first side edge W and the first reference plane M1 is at its maximum, the door 30 opens to G'. W ; configurable, G` W [∈μG2-10°, G2-5°] any value. That is, the door 30 is opened from the closed state to G. max During the process, when the midpoint I of the axis segment PQ moves to the straight line (first straight line K) where the first guide point P1, which is closest to the guide trajectory line S and the rear wall 33 of the door, is the center O0 of the circle containing the guide trajectory line S, the distance between the first side edge W and the first reference plane M1 is at its maximum. This setting effectively limits the movement trajectory of the first side edge W during the opening of the door 30, allowing the first side edge W to move to the position with the maximum distance from the first reference plane M1 when the opening angle of the door 30 is small. This limits the outward movement distance of the first side edge W, preventing interference between the first side edge W and the cabinet 100 when the door 30 is opened. Furthermore, it can also serve as an auxiliary method for assembly and machining accuracy inspection.

[0254] During the opening of the door 30, the second side edge N moves along with the opening of the door 30, and its trajectory is recorded as the trajectory line of the second side edge. In the projection on the top wall of the box 10, during the opening of the door 30, the second side edge N first moves towards the first reference plane M1 and the second reference plane M2, then moves towards the first reference plane M1 and away from the second reference plane M2, and then moves away from the first reference plane M1 and the second reference plane M2.

[0255] As a configurable method, in the projection on the top wall of the enclosure 10, the door 30 is shown to open from the closed state to G. max During this process, the second side edge N moves along an arc. That is, in the projection of the top wall of the box 10, the door 30 opens from the closed state to G. max During the process, the trajectory formed by the movement of the second side edge N is an arc. The hinge assembly with the above trajectory characteristics can effectively detect the assembly accuracy and processing accuracy after the door 30 and the housing 10 are installed together, so that it can be adjusted in time to achieve a high-precision fit between the second hinge component on the door 30 and the first hinge component on the housing 10, and meet the complex motion requirements of finely controlling the door 30 to complete the rotation and inward movement.

[0256] As a configurable method, door 30 opens to G' N At this time, the distance between the second side edge N and the second reference plane M2 is minimized. G` is configurable. N [∈μG1+5°, G1+10°] where any value. That is, the door 30 is opened from the closed state to G. maxDuring the process, the guide center axis P moves to the vicinity of the first guide point P1, where the distance between the guide trajectory line S and the rear wall 33 of the door is minimized, and the distance between the second side edge N and the second reference plane M2 is minimized. The above settings can effectively limit the movement trajectory of the second side edge N during the opening of the door 30, so that the angle travel of the second side edge N towards the second reference plane M2 is small, thereby limiting the distance of the second side edge N towards the second reference plane M2 and avoiding interference between the second side edge N and the front end face of the box 10 that defines the opening and removal port due to excessive movement of the second side edge N towards the second reference plane M2; on the other hand, it can also be used as an auxiliary method for assembly and machining accuracy detection.

[0257] During the opening of the door 30, the side sealing edge F moves along with the door 30, and its trajectory is recorded as the side sealing edge trajectory line. In the projection onto the top wall of the cabinet 10, during the opening of the door 30, the side sealing edge F first moves towards the first reference plane M1 and the second reference plane M2, then moves towards the first reference plane M1 and away from the second reference plane M2, and then moves away from both the first and second reference planes M1 and M2. This arrangement, implemented later in the opening of the door 30, allows the side sealing edge F to move outwards while the door 30 moves inwards as a whole. This compensates for the inward displacement of the side sealing edge F during the initial opening of the door 30, thereby reducing excessive obstruction of the access opening by the door 30 due to the inward movement of the side sealing edge F, and increasing the space utilization rate of the storage drawer in the lateral dimension of the storage compartment.

[0258] In this embodiment, the door 30 is opened to G. F At that time, the distance between the side sealing edge F and the side wall of the first body (reference plane M0) is the largest (side sealing edge F is located at point F). m In this embodiment, the door 30 is opened to G. F The plane of the side sealing edge F, which is parallel to the side wall of the first body, is defined as the third reference plane M3. The third reference plane M3 does not move during the opening of the door 30 relative to the box 10; it is a reference plane that remains stationary relative to the box 10. As a configurable method, G... F The value is either 90° or 105°. This limitation ensures that when the door 30 is opened to approximately 95°, the distance between the side sealing edge F and the side wall of the first body is maximized. This allows the side sealing edge F to have a larger outward movement during the later stages of the door 30's opening, thereby compensating more for the inward displacement of the side sealing edge F during the early stages of the door 30's opening and minimizing the obstruction of the access opening by the door 30.

[0259] Among them, the door 30 is opened from the closed state to the maximum angle G. max During the process, the second side edge N is located on the side of the third reference plane M3 closest to the side wall of the first body, and the second side edge N is located on the side of the side sealing edge F closest to the side wall of the first body.

[0260] As a configurable method, when the door 30 is opened to the maximum angle G max During the opening process, the door sealing edge F is located between the second side edge N and the third reference plane M3 (including on the third reference plane M3) to prevent the second side edge N from becoming a major factor affecting the lateral dimension of the access opening when it is located on the side of the door sealing edge F away from the first body sidewall. That is, during the opening process of the door 30, the second side edge N is always located outside the side sealing edge F. F Towards the maximum angle G max During the opening process, as the opening angle of the door 30 increases, the side sealing edge F moves towards the reference plane M0, and the second side edge N is always located on the side of the side sealing edge F closest to the reference plane M0. The obstruction of the access opening by the door seal 20 gradually decreases, further reducing the lateral obstruction of the access opening by the door 30. This allows for an increase in the lateral dimensions of the drawers installed in the storage room, increasing the space utilization of the storage room and facilitating the user's access to items stored on the door shelf. The hinge assembly with the above trajectory characteristics ensures that the side sealing edge F moves outward a certain distance at the end during the entire inward movement of the door 30, and that the second side edge N is always located on the side of the side sealing edge F closest to the first body sidewall. It combines multiple characteristics, effectively enhancing its practicality.

[0261] As one feasible approach, when the door 30 is opened to its maximum angle G max At this time, in the projection of the plane containing the top wall of the housing 10, the second side edge N is located on the side of the side sealing edge F away from the third reference plane M3, and the angle between the straight line FN containing the side sealing edge F and the second side edge N and the third reference plane M3 is any value between 0° and 8°. Alternatively, in the projection of the plane containing the top wall of the housing 10, the straight line FN containing the side sealing edge F and the second side edge N is approximately parallel to the third reference plane M3; that is, when the door 30 is opened to its maximum angle G... max At this time, the angle between the straight line FN containing the side sealing edge F and the second side edge N and the third reference plane M3 is any value between 0° and 3°. The above limitation is to minimize the obstruction of the pick-up and put-out opening by the side sealing edge F, and to effectively avoid increasing the lateral obstruction of the pick-up and put-out opening by the door body 30 due to the rotation and movement of the second side edge N.

[0262] The angle between the plane containing the surface of the door seal 20 away from the door sidewall 32 and the first body sidewall is denoted as the first included angle λ. The door body 30 continues from 90° towards the maximum angle G. max During the opening process, the first included angle λ tends to increase. As one feasible approach, during this process, the side sealing edge F first gradually approaches the third reference plane M3, and then gradually moves away from the third reference plane M3 towards the side closer to the reference plane M0.

[0263] In this embodiment, in the projection on the top wall of the housing 10, the door 30 is opened from the closed state to G. max During this process, the side sealing edge F moves along an arc. That is, in the projection on the top wall of the box 10, the door 30 opens from the closed state to G. max During the process, the trajectory formed by the movement of the side sealing edge F is an arc. The hinge assembly with the above trajectory characteristics can effectively detect whether the assembly is accurate and whether the processing precision meets the requirements after the door body 30 and the box body 10 are installed together. This allows for timely adjustments to achieve a high-precision fit between the second hinge component on the door body 30 and the first hinge component on the box body 10, meeting the complex motion requirements of finely controlling the door body 30 to complete rotation and inward movement.

[0264] As a configurable method, door 30 opens to G' F At that time, the distance between the side sealing edge F and the second reference plane M2 is minimized; where G` F ∈(0°, 5°] any value; that is, the door 30 is opened from the closed state to G. max During the process, the side sealing edge F reaches the position with the minimum distance from the second reference plane M2 within a small angle range during the initial opening of the door 30. With the above-mentioned movement trajectory of the side sealing edge F, the travel angle range of the side sealing edge F approaching the second reference plane M2 is very small, effectively limiting the distance that the side sealing edge F approaches the second reference plane M2 when the door 30 is opened, allowing the door seal 20 to quickly move away from the cabinet, avoiding compression of the door seal 20, and reducing wear on the door seal 20.

[0265] Based on the movement of the first side edge W, the second side edge N, and the side sealing edge F described above, in some embodiments of this application, the circles containing the trajectory lines of the first side edge, the second side edge, and the side sealing edge are concentric circles. The hinge assembly with these trajectory characteristics allows the door 30 to move inward during opening; it also causes the first side edge W, the second side edge N, and the side sealing edge F to perform regular arc movements. This configuration effectively detects the accuracy of the assembly and the processing precision after the door 30 and the housing 10 are installed together, allowing for timely adjustments to achieve a high-precision fit between the second hinge component on the door 30 and the first hinge component on the housing 10, thus meeting the complex movement requirements of finely controlling the door 30 to rotate and move inward.

[0266] The common center of the circles containing the first side edge trajectory line, the second side edge trajectory line, and the side sealing edge trajectory line is denoted as the edge trajectory center O. L The radius of the circle containing the trajectory of the first lateral edge is denoted as the radius R of the first lateral edge. C1 The radius of the circle containing the trajectory of the second lateral edge is denoted as the radius R of the second lateral edge. C2 The radius of the circle containing the trajectory line of the side sealing edge is denoted as the side sealing edge radius R.F .

[0267] In some embodiments of this application, R C1 <R C2 <R F That is, during the opening of the door 30, the center O of the trajectory of the edge line relative to the stationary box 10. L Distance from the first lateral edge W, center O of the edge trajectory circle L The distance from the second lateral edge N, and the center O of the edge trajectory circle. L The distance from the side sealing edge F increases sequentially.

[0268] In some embodiments of this application, in the projection of the plane containing the top wall of the housing 10, the center O of the edge trajectory circle is... L The distance from the guide center axis P is denoted as |O L P|, center of the edge trajectory O L The distance from the guide center axis Q is denoted as |O L Q|, where |O L P| and |O L Q| are equal, that is, △QO L P is an isosceles triangle.

[0269] As a configurable method, O L P = O L Q=PQ; that is, △QO L P is an equilateral triangle. The hinge assembly with the above trajectory characteristics imposes more standard conditions. On the one hand, it meets the requirement of the door 30 moving inward when it is opened, and on the other hand, it meets the accuracy detection requirements. This ensures the high-precision matching of the hinge assembly and meets the complex motion requirements of finely controlling the door 30 to complete the rotation and inward movement.

[0270] As a configurable method, within the plane containing the top wall of the housing 10, the distance between the guide center axis P and the second reference plane M2 is denoted as D1, and the distance between the guide center axis Q and the second reference plane M2 is denoted as D2; the center O of the edge trajectory circle... L The distance between the first hinge axis 41, the second hinge axis 42, and the center O of the edge trajectory circle are denoted as D3. Where D1 < D2 < D3; and (D2-D1):(D3-D2)∈μ1.5,2] any value. The above settings effectively define the first hinge axis 41, the second hinge axis 42, and the center O of the edge trajectory circle. L The relative positional relationship, corresponding to the trajectory line with this feature, makes the structure of the hinge assembly compact, allowing the door 30 to move within a larger angular range.

[0271] As another possible configuration, within the plane containing the top wall of the housing 10, the distance between the guide center axis P and the first reference plane M1 is denoted as H1, and the distance between the guide center axis Q and the first reference plane M1 is denoted as H2; the center O of the edge trajectory circle... L The distance between the first reference plane M1 and the first reference plane M1 is denoted as H3. Where H2 < H1 < H3; furthermore, (H1-H2):(H3-H1)∈μ0.7,1] any of these values. In conjunction with the above settings, the first hinge axis 41, the second hinge axis 42, and the center O of the edge trajectory circle are further defined. L The relative positional relationship, corresponding to the trajectory line with this feature, makes the structure of the hinge assembly compact, allowing the door 30 to move within a larger angular range.

[0272] As a configurable setting, H2-H3 can be any value between 8mm and 11mm; D3-D1 can be any value between 8mm and 10mm; that is, the center of the edge trajectory circle O. L The guide center axis P and the guide center axis Q are concentrated in a small area, and the distance between them is small. The hinge assembly with the above trajectory characteristics has a more compact structure.

[0273] In some embodiments of this application, the center O of the edge trajectory circle L The center O0 of the guide circle of the guide trajectory line S when the door 30 is closed coincides with the center of the guide circle; that is, when the door 30 is closed, the circle where the first side edge trajectory line, the circle where the second side edge trajectory line, the circle where the side sealing edge trajectory line and the circle where the guide trajectory line S are located are concentric circles.

[0274] In some embodiments of this application, when the door 30 is opened to 90°, the guide center axis P moves to the sixth guide point P6, that is, the fourth guide point P4 coincides with the sixth guide point P6; when the door 30 is opened to 90°, the guide center axis P moves to the position where the distance between the guide trajectory line S and the door side wall 32 is the smallest.

[0275] In some embodiments of this application, the guide portion 50 defines a smooth curved groove. Correspondingly, in this embodiment, the guide trajectory line S is a smooth curve, and the curved groove wall of the formed guide groove is also a smooth curve; that is, neither the guide trajectory line S nor the curved groove wall of the formed guide groove has any sharp points, thereby enabling the first hinge shaft 41 and the second hinge shaft 42 to move smoothly and fluidly under the guidance of the guide portion 50, thus ensuring that the door 30 opens more smoothly. The guide groove defined by the guide portion 50 for guiding the movement of the first hinge shaft 41 and the second hinge shaft 42 is smooth and has no sharp points, which makes the movement of the second hinge shaft 42 relative to the trajectory groove smooth and extends the service life of the hinge shaft. Moreover, during the opening process of the door 30, the first hinge shaft 41 and the second hinge shaft 42 move continuously and uninterruptedly relative to the guide portion 50.

[0276] In this embodiment, the movement of the first hinge shaft 41 and the second hinge shaft 42 relative to the guide portion 50 is actually the movement of the roller relative to the cam. For cam mechanisms with roller followers, the size of the roller radius often affects the shape of the actual profile curve of the cam, so the roller radius must be selected appropriately.

[0277] Where η: theoretical profile; η′: actual profile; ρ: theoretical profile radius; ρ′: actual profile radius; ρ min The minimum radius of curvature of the convex portion of the theoretical profile curve (i.e., the radius of curvature of the sharpest part); r T Roller radius.

[0278] like Figure 35 As shown in a), when the theoretical profile curve of the cam is a concave curve, ρ′=ρ+r T Therefore, r T The size of is not limited by ρ, and at this time, regardless of the size of the roller radius, the working profile of the cam is always a smooth curve.

[0279] When the theoretical profile curve of the cam is a convex curve, then ρ=ρ′-r T :

[0280] (1) As Figure 35 As shown in b), when ρ min >r T When ρ′>0, the actual contour curve is a smooth curve.

[0281] (2) Figure 35 As shown in c), when ρ min =r T When ρ′=0, a sharp point is generated on the actual profile curve of the cam. This sharp point is very easy to wear and can easily change the motion law of the cam, so it cannot be used.

[0282] (3) Figure 35 As shown in d), when ρ min <r T When ρ′<0, the actual contour curves will intersect, and the portion of the actual contour curve above the intersection point will be cut off during processing, thus preventing the realization of this part of the motion law.

[0283] Therefore, in order to ensure that the cam profile neither becomes sharp nor intersects at any position, the roller radius r T It must be smaller than the minimum radius of curvature ρ of the convex portion of the theoretical profile curve. min Generally, r is selected. T ≤0.8ρ min If this requirement cannot be met, the cam base circle radius should be increased and the cam profile curve redesigned.

[0284] Accordingly, in this embodiment, the guide trajectory line S corresponds to the theoretical profile curve of the cam of the guide portion 50. In this embodiment, the theoretical profile curve of the cam is a convex curve (the guide trajectory line S protrudes in a direction away from the front wall of the door); the curved groove wall of the guide portion 50 near the front wall 31 is the actual profile curve; the radius of the second hinge shaft 42 also satisfies r T The size satisfies the setting (1) (ρ) min >r T This ensures that the curved groove wall (actual contour curve) of the guide portion 50 near the front wall 31 is a smooth curve, which on the one hand makes the movement of the first hinge shaft 41 and the second hinge shaft 42 smooth, and on the other hand reduces the wear of the guide portion 50. That is, the guide portion 50 is essentially set as a cam. The theoretical contour curve of the cam in this embodiment is a convex curve, which can effectively avoid the defects of easy wear caused by the concave structure. In summary, in this embodiment, the guide trajectory line S is set as a convex cam curve, and has ρ min >r T As another feasible approach, r T ≤0.8ρ min This ensures that the guide portion is smooth and free of sharp points, allowing the hinge shaft to move smoothly under the guidance of the guide portion 50.

[0285] In this invention, a guide portion 50 (specifically a connected groove) with a curved guide trajectory line S is provided, so that the first hinge shaft 41 and the second hinge shaft 42 move simultaneously relative to the guide portion 50. On the one hand, the guide portion 50 is simple to manufacture and improves the manufacturing accuracy; on the other hand, it increases the coordination of the movement of the first hinge shaft 41 and the second hinge shaft 42, and improves the stability and smoothness of the door opening; furthermore, the guide portion 50 occupies little space and has a compact structure, so that the hinge assembly of this invention can be applied to thin-sized doors to meet the need for inward movement.

[0286] Example 2

[0287] This second embodiment is based on the same principle as the first embodiment, such as... Figures 36-37As shown, the difference between this embodiment and Embodiment 1 is that, in Embodiment 2, when the door 30 is opened to 90°, the fifth guide point P5 of the first hinge axis 41 on the guide trajectory line S, i.e., the fourth guide point P4, coincides with the fifth guide point P5. That is, the straight line containing the point on the guide trajectory line S where the central axis of the first hinge axis 41 is located when the door 30 is opened to 90° and the point on the guide trajectory line S where the first hinge axis 41 is located when the door 30 is closed, is parallel to the front wall 31 of the door. The above settings define the relative relationship between the closed state and the 90° open state of the door 30. During the process of opening the door 30 from the closed state to 90°, both the first hinge axis 41 and the second hinge axis 42 move towards the side closer to the door sidewall 32 throughout the entire process. This maintains the tendency of the first hinge axis 41 and the second hinge axis 42 to maintain unidirectional movement, increasing the coordination between the first hinge axis 41 and the second hinge axis 42 and the guide part 50. On the other hand, the hinge assembly with the above trajectory characteristics can check the assembly and forming accuracy of the guide part 50 by comparing the relationship between the closed state and the 90° open state of the door 30 after assembly, so as to promptly identify problems and make adjustments to ensure that the complex motion requirements of finely controlling the door 30 to complete rotation and inward movement can be met.

[0288] Example 3

[0289] This third embodiment is based on the same principle as the first embodiment, but differs from the first embodiment in that, as follows: Figure 38 As shown, in this second embodiment, the guide trajectory line S first extends along the curve towards the door side wall 32 and the door rear wall 33, and then extends along the curve towards the door side wall 32 and away from the door rear wall 33. Similar to the first embodiment, the guide trajectory line S can be configured as an arc. In this embodiment, the guide trajectory line S extends from the starting guide point P0 to the sixth guide point P6.

[0290] In the projection on the top wall of the housing 10, the angle between the straight line containing the central axis of the first hinge axis 41 and the central axis of the second hinge axis 42 and the plane containing the loading and unloading opening is denoted as γ, which is any value between 45° and 60°. This ensures that the door 30 can be opened at an angle of not less than 90°, facilitating the loading and unloading of items.

[0291] In this embodiment, during the entire process of opening the door 30, the first hinge shaft 41 and the second hinge shaft 42 move towards the side closer to the door sidewall 32 throughout the entire process. This allows the first hinge shaft 41 and the second hinge shaft 42 to maintain the same direction (closer to the door sidewall 32) throughout the entire process, increasing the uniformity of the cooperation between the first hinge shaft 41, the second hinge shaft 42 and the guide part 50 during the entire process of opening the door 30.

[0292] Example 4

[0293] This fourth embodiment is based on the same principle as the first embodiment, such as... Figures 39-41As shown, the difference between this embodiment and the first embodiment is that the guide trajectory line S in this fourth embodiment is an elliptical arc.

[0294] As an optional configuration, the major axis of the ellipse containing the elliptical arc is parallel to the front wall 31 of the door. In this case, the endpoint of the minor axis of the ellipse is the first guiding point P1 with the smallest distance from the rear wall 33 of the door.

[0295] As a configurable configuration, when the door 30 is closed, the starting guide point Q0 of the central axis of the second hinge axis 42 on the guide trajectory line S is the endpoint of the major axis of the ellipse. Correspondingly, the fifth guide point P5 is the other endpoint of the major axis of the ellipse.

[0296] In conjunction with Embodiment 2, it can be configured such that when the door 30 is opened to 90°, the fifth guide point P5 of the first hinge axis 41 on the guide trajectory line S, i.e., the fourth guide point P4 and the fifth guide point P5 coincide; that is, when the door 30 is opened to 90°, the point on the guide trajectory line S where the central axis of the first hinge axis 41 is located and the point on the guide trajectory line S where the first hinge axis 41 is located when the door 30 is closed are located are on a straight line parallel to the front wall 31 of the door.

[0297] Specifically, in the two-dimensional coordinate system XOY, which is stationary relative to the door 30 as in Example 1, the parametric equation of the elliptical arc is as follows:

[0298] The parametric equations of the ellipse containing the elliptical arc are: x = x1 + a1cosθ1, y = y1 + b1sinθ1; in this embodiment, a1 > b1, θ1 is the eccentric angle; (x1, y1) are the coordinates of the center, and the center of the elliptical arc is denoted as O. t ;

[0299] In some embodiments of this application, the center O of the elliptical arc t The distance between the elliptical arc and the centroid plane C is any value between 0 and 2 mm. The center of the elliptical arc is located near the centroid plane C, and the guide trajectory line S of the elliptical arc is mostly located on the side of the centroid plane C closest to the rear wall 33 of the door; this ensures that the door 30 is subjected to balanced forces when opening, increasing the stability of the door 30 when it opens. The center O of the elliptical arc can be set. t It lies on the centroid plane C.

[0300] As one configuration in this embodiment, a1:b1 belongs to μ1,2]; the shape of the elliptical arc where the guide trajectory line S is located is defined above to ensure the movement efficiency of the first hinge axis 41 and the second hinge axis 42 relative to the guide part 50 and improve the opening efficiency of the door 30.

[0301] The second hinge component, possessing the aforementioned trajectory characteristics, guides a trajectory line S that is an elliptical arc, a regular standard curve. In this embodiment, the guide portion 50 guides the first hinge axis 41 and the second hinge axis 42 in an elliptical arc motion, increasing the smoothness and stability of their relative movement. Furthermore, the guide portion 50 in this invention is more compactly arranged, occupying less space, and can be formed on a thin-sized door body 30 to achieve precise control of the door body 30.

[0302] Combination Figures 39-41 As shown, this corresponds to the setting of each guide point on the guide trajectory line S in Embodiment 1.

[0303] During the opening process, the door 30's movement is divided into four stages based on the relative motion of the first hinge axis 41 and the second hinge axis 42 to the guide portion 50. Unlike the guide portion 50 in Embodiment 1, which is set as a circular arc guide trajectory line S, in this embodiment, the first hinge axis 41 and the second hinge axis 42 move in an elliptical arc throughout the entire movement. Furthermore, the displacement relationship of the door 30 during opening is the same as in Embodiment 1; therefore, the movement stages and their displacement relationships will not be repeated here. This embodiment's design ensures that the first hinge axis 41 and the second hinge axis 42 move along a regular elliptical arc throughout the entire movement, resulting in a smooth and stable opening of the door 30 and facilitating precise control of the door 30 for complex movements.

[0304] It should be noted that in this embodiment, the guide trajectory line S is an elliptical arc, and the trajectory formed by the center point I of the axis can be approximated as an elliptical arc; wherein, the trajectory line of the center point I of the axis, which is approximately elliptical, is denoted as the elliptical center point trajectory S'.

[0305] As a configurable method, the center point trajectory S' of the ellipse axis shares the same elliptical center as the guide trajectory line S. It should be noted that the phrase "approximately an elliptical arc" indicates that the actual trajectory of the center point I is not a standard elliptical arc. In this embodiment, the deviation between the actual trajectory of the center point I and a standard elliptical arc is less than 0.3mm. That is, the point on the center point trajectory S' of the ellipse axis is denoted as P'; in the XOY coordinate system, the straight line O... t The intersection of P' and the trajectory of the actual center point I is denoted as P''; where, along the straight line O t In the P' direction, the distance between P' and P'' is less than 0.3mm.

[0306] Combination Figures 42-47As shown, the comparison method is the same as in Embodiment 1; where it is assumed that the door 30 rotates around the axis center point I of the previous state to the position of the adjacent subsequent state (the door 30 is represented by a dashed line), and during this movement, the rotation center of the door 30 is fixed relative to the door 30; then, under this movement trend, when the door 30 is opened, the position of the first side edge W relative to the first hinge member is located at W'; the position of the second side edge N relative to the first hinge member is located at N'; and the position of the side sealing edge F relative to the first hinge member is located at F'. Figure 42 In the diagram, the position of the door 30 indicated by the dashed line is the position reached when the door 30 is simply rotated to G1 relative to the midpoint I (I0) of the axis segment PQ of the door 30 when the door 30 is closed; the position of the door 30 indicated by the solid line is the position reached when the door 30 is rotated open to G1 according to the setting method of the present invention. Figure 43 In the diagram, the dashed line indicates the position of door 30, which is the position reached when door 30 is opened to G1 using the rotation method of this invention, and then rotated to G2 with door 30 as the center point I (the center point I (I1) of the previous state) relative to the axis of door 30 in G1; the solid line indicates the position of door 30, which is the position reached when it is opened to G2 using the rotation method of this invention; similarly, according to reason 44- Figure 47 A comparative diagram of two different opening methods is provided for each opening angle.

[0307] Comparing the present invention's configuration (the door 30 rotates throughout its entire movement around a point that remains dynamically changing relative to the door 30) with the simple rotation of the door 30 around its previous axis center point I, it can be seen that the movement trend of the door 30 during the opening process is the same as in Embodiment 1; specifically:

[0308] Door 30 opens from the closed state to G max During the process, in this application, the position W of the first side edge is always located on the side of W' that is closer to the side wall of the second body and farther away from the retrieval opening; the position N of the second side edge is always located on the side of N' that is closer to the side wall of the second body and farther away from the retrieval opening; the position F of the side sealing edge is always located on the side of F' that is closer to the side wall of the second body and farther away from the retrieval opening. That is, the door 30 is opened from the closed state to G. max During the process, the door 30 tends to move inward and forward. It should be noted that the comparison between the current position of the door 30 in this invention and the assumed position of the door 30 when it is simply rotated from the previous state around the axis center point I to the opening angle of the door 30 in this invention is representative. It can represent the movement trend of the door 30 relative to the previous state during the opening process of the door 30. Here, only some selected angles are used for comparison and explanation to illustrate the movement trend of the door 30 when it is opened.

[0309] In this embodiment, the movements of the first side edge W, the second side edge N, and the side sealing edge F differ from those in Embodiment 1; combined with Figure 48 As shown, specifically,

[0310] Door 30 opens from the closed state to its maximum angle G max During the process, the movement trajectories of the first side edge W, the second side edge N, and the side sealing edge F are all non-circular arcs. Among them, the movement trends of the first side edge W and the second side edge N are consistent with the movement trends in Embodiment 1 (the relative positional relationship with the first reference plane M1 and the second reference plane M2 during the movement), which will not be repeated here.

[0311] In this embodiment, the door 30 is opened from the closed state to the maximum angle G. max During the process, the side sealing edge F first moves towards the first reference plane M1 and away from the second reference plane M2, and then moves away from the first reference plane M1 and the second reference plane M2. That is, in this embodiment, the side sealing edge F moves quickly away from the pick-up and drop-off port, effectively avoiding squeezing the door seal 20.

[0312] In this embodiment, during the opening of the door 30, the movement principle and displacement relationship of the first hinge shaft 41 relative to the guide part 50 and the second hinge shaft 42 relative to the guide part 50 are the same as in Embodiment 1, and will not be repeated here.

[0313] It should be noted that the "elliptical arc" involved in this invention includes the standard elliptical arc in the standard mathematical definition (the part between any two points on an ellipse), as well as a curve that deviates slightly from the standard elliptical arc in the standard mathematical definition due to processing errors, slight deformation or wear of the component, or reserved gaps, or its own performance, but still has the characteristics of an elliptical arc (such as fluctuating around the elliptical arc with a small deviation).

[0314] Example 5

[0315] This fifth embodiment is based on the same principle as the fourth embodiment, but differs in that the guide trajectory line S in this fifth embodiment is formed by connecting an elliptical arc and a circular arc. For example... Figures 49-51 As shown, specifically, the elliptical arc is located on the side of the circular arc away from the door sidewall 32.

[0316] As one possible configuration in this embodiment, the fifth guiding point P5 is the connection point between the elliptical arc and the circular arc. In this embodiment, the elliptical arc corresponds to the elliptical arc segment Q0P5 in Embodiment 4, and the circular arc corresponds to the segment P5P7 (represented by dashed lines). The following examples illustrate this.

[0317] The arc extends from the fifth guiding point P5 in a direction away from the door side wall 32 and the door rear wall 33 to the seventh guiding point P7.

[0318] In some embodiments of this application, the ellipse containing the elliptical arc is inscribed in the circle containing the circular arc.

[0319] Specifically, in the two-dimensional coordinate system XOY, which is stationary relative to the door 30 as in Example 1, the parametric equations of the elliptical arc and the circular arc are as follows:

[0320] The parametric equations of the ellipse containing the elliptical arc are: x = x1 + a1cosθ1, y = y1 + b1sinθ1; in this embodiment, a1 > b1, θ1 is the eccentric angle; (x1, y1) are the coordinates of the center, and the center of the elliptical arc is denoted as O. t ;

[0321] The parametric equations of the circle containing the arc are: x = x² + r²cosθ², y = y² + r²sinθ²; (x², y²) are the coordinates of the center of the circle, and the center of the arc is denoted as O. y r2 is its radius, θ2 is a parameter, which is the rotation angle, and (x, y) are the coordinates of the point through which it passes.

[0322] In some embodiments of this application, the center O of the elliptical arc t With the center O of the arc y They coincide; that is, x1 = x2, y1 = y2.

[0323] The second hinge component, possessing the aforementioned trajectory characteristics, has a guide trajectory line S formed by connecting elliptical and circular arcs, resulting in a regular curve. In this embodiment, the guide portion 50 guides the movement of the first hinge axis 41 and the second hinge axis 42, increasing the smoothness and stability of their relative movement. Furthermore, the guide portion 50 in this invention is more compactly arranged, enabling it to be formed on a thin door body 30 to achieve precise control of the door body 30.

[0324] Combination Figure 49 As shown, this corresponds to the setting of each guide point on the guide trajectory line S in Embodiment 1;

[0325] During the opening process, the door 30 moves in four stages according to the movement of the first hinge axis 41 and the second hinge axis 42 relative to the guide portion 50. Unlike the guide portion 50 in Embodiment 1, which is set as a circular arc guide trajectory line S, in this embodiment, the first hinge axis 41 and the second hinge axis 42 first move in an elliptical arc and then in a circular arc. As an optional configuration, the first hinge axis 41 first moves in an elliptical arc and then in a circular arc, while the second hinge axis 42 moves in an elliptical arc throughout the entire process.

[0326] Furthermore, the displacement relationship of the door 30 when it opens in this embodiment is the same as that in Embodiment 1; its movement stages and displacement relationships during the movement process will not be described again here. The configuration of this embodiment makes the first hinge axis 41 and the second hinge axis 42 move along a regular elliptical arc or circular arc throughout the entire process, so that the door 30 opens smoothly and stably, which facilitates precise control of the door 30 to perform complex movements.

[0327] The configuration of this embodiment is the same as that in Embodiment 4, which is compared with the simple rotation of the door body 30 around the center point I of its previous state. Therefore, it will not be described again here.

[0328] Furthermore, the movement of the first side edge W, the second side edge N, and the side sealing edge F in this embodiment is the same as in Embodiment 4, and will not be repeated here.

[0329] It should be noted that, in conjunction with Embodiments 1 to 5, after the setting trend of the guide trajectory line S in this invention is defined, the form of the guide trajectory line S is not limited. It can be set as a circular arc as in Embodiment 1, or as an elliptical arc as in Embodiment 4, or as a tangential connection between an elliptical arc and a circular arc as in Embodiment 5; of course, it can also be set as a tangential connection of multiple circular arc segments, or as a combination of multiple segments of elliptical arcs and circular arcs, or as a connection between non-elliptical arcs and circular arcs, but all of them have the characteristics of a smooth curve. Further details will not be elaborated here.

[0330] In the aforementioned embodiments, the setting of a single circular arc or elliptical arc makes the movement of the first hinge axis 41 and the second hinge axis 42 relative to the guide portion 50 more regular and more detectable.

[0331] Additionally, it should be noted that Embodiments 2 and 3 are also applicable to other embodiments and other unmentioned schemes that have the trajectory characteristics of the present invention, and are not limited to the arc-shaped guide trajectory line S in Embodiment 1.

[0332] Example 6

[0333] This embodiment mainly describes the specific configuration of the second hinge component. A track block 70 is fixed to the end of the door body 30 near the first hinge component, and a guide portion 50 is formed on the track block 70.

[0334] Specific reference Figures 52-54 In this embodiment, the track block 70 located at the lower end of the door body 30 is used as an example for explanation. Specifically, the track block 70 has a groove bottom 74, a groove opening 73 opposite to the groove bottom 74, a circumferential groove wall 72 surrounding the groove bottom 74, and an annular plate 71 near the groove opening 73 and surrounding the circumferential groove wall 72.

[0335] A receiving portion 34 is formed at the end of the door body 30 near the first hinge member; the bottom wall of the receiving portion 34 has a mounting hole 35; a track block 70 is installed in the receiving portion 34, and the circumferential groove wall 72 mates with the hole wall of the mounting hole 35; the surface of the ring plate 71 away from the first hinge member mates with the bottom wall of the receiving portion 34, and the circumferential direction of the ring plate 71 mates with the circumferential side wall of the receiving portion 34. Alternatively, the track block 70 may be configured to have an interference fit with the mounting hole 35.

[0336] In this embodiment, the guide portion is a through groove without any sharp points; the wall of the mounting hole 35 that mates with it is also formed by connecting a circular arc or an elliptical arc, which makes it easier to process and effectively ensures the processing accuracy of the mounting hole 35.

[0337] The track block 70 is made of plastic, which is self-lubricating and wear-resistant, effectively ensuring smooth movement of the first door hinge 41 relative to the guide part 50 and the second door hinge 42 relative to the guide part 50 when the door 30 is opened. Alternatively, the track block 70 can be made of POM material, which has strong abrasion resistance and can improve its service life.

[0338] In some embodiments of this application, the first hinge member is provided with a first mating part at the end away from the side wall of the first body, and the door body 30 is provided with a second mating part on the side of the track block 70 away from the door side wall 32. The second mating part is used to cooperate with the first mating part to realize the locking and unlocking of the door body 30 and the box body 10.

[0339] Specifically, a stop part 403 is provided on the side of the hinge plate 40 away from the side wall of the first body, and a hook gap 404 is formed on the side of the stop part 403 near the box body.

[0340] As an optional configuration, the door body 30 has a locking block 80 forming a second mating part on the side of the track block 70 away from the door side wall 32; the locking block 80 includes a root connection part 81 and a hook part 82. The hook part 82 extends first away from the door side wall 32 and then bends towards the side closer to the door rear wall 33 and the door side wall 32. The opening of the hook part 82 faces the door side wall 32, and the free end of the hook part 82 is located on the side closer to the door rear wall 33. The root connection part 81 is fixedly connected to the door body 30 to strengthen the connection strength between the root connection part 81 and the door body 30 and to ensure the deformation capability of the hook part 82.

[0341] When the door 30 is closed, the free end of the locking hook 82 is accommodated in the hook gap 404, and the stop part 403 is located inside the locking hook 82. The locking hook 82 on the door 30 hooks the stop part 403 on the hinge plate 40, thereby locking the door 30 and preventing the door 30 from not closing tightly, which would affect the refrigeration and freezing effect of the refrigerator. When the door 30 is opened, the locking hook 82 is deformed by force and overcomes the obstruction of the stop part 403, thereby disengaging from the stop part 403.

[0342] In one configuration, the track block 70 and the locking block 80 are integrally formed, and the root joint 81 of the locking block 80 is connected to the ring plate 71 of the track block 70. Correspondingly, the receiving portion 34 at the end of the door body 30 can accommodate the integrally formed track block 70 and locking block 80 as a whole.

[0343] As another possible configuration, the track block 70 and the locking block 80 are formed separately; the end of the door body 30 near the second hinge member has a receiving portion 36 for mounting the locking block 80 on the side of the receiving portion 34 away from the door sidewall 32.

[0344] In summary, embodiments one through six of this invention have described the solutions of this invention from multiple perspectives. It should be noted that embodiments two through six mainly describe the differences between them and other embodiments, without extensive description of their similarities. Furthermore, the first and second hinge components, which are designed to precisely control the rotation and opening of the door 30 and its movement in a specific direction, require meticulous design to achieve coordinated operation between them, ultimately enabling precise control of the door 30 to perform complex movements. Additionally, features of each embodiment can be combined with each other without conflict, thus not departing from the scope of the technical solutions of the embodiments of this application.

[0345] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0346] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that, include: The container defines a storage compartment with an access opening; The enclosure has a first body sidewall and a second body sidewall that are arranged opposite to each other; The door is used to open or close the pick-up and drop-off port; A hinge assembly connecting the door and the housing to allow the door to rotate relative to the housing; the hinge assembly includes: A guide section is located at the end of the door body near the side wall of the first body; the guide section has a curved guide trajectory line; The first hinge shaft and the second hinge shaft are fixed to the housing; during the opening of the door, the first hinge shaft and the second hinge shaft simultaneously move in a curved path relative to the guide portion along the guide trajectory line, and the door opens the retrieval port and moves inward a certain distance; wherein, the movement trajectory of the first hinge shaft and the movement trajectory of the second hinge shaft at least partially overlap. The door has a front wall that is away from the housing when the door is closed, and a side wall that is connected to the front wall and close to the guide portion; The central axis of the first hinge axis is denoted as the guide central axis P, and the central axis of the second hinge axis is denoted as the guide central axis Q; Within the plane of the top wall of the housing, when the door is closed, the guide center axis Q is located at the starting guide point Q0 of the guide trajectory line; When the door is opened to G5, the guide center axis P is located at the fifth guide point P5 of the guide trajectory line; wherein, the line segment P5Q0 where the fifth guide point P5 and the starting guide point Q0 are located is parallel to the front wall of the door; The point at which the guide trajectory line is furthest from the front wall of the door is denoted as the first guide point P1; the straight line passing through the first guide point P1 and parallel to the side wall of the door is denoted as the first straight line K1. When the door is opened to G2 = G5 / 2, the guide center axis Q is located at the second guide point Q2 of the guide trajectory line, and the guide center axis P is located at the second guide point P2 of the guide trajectory line; The first straight line K1 perpendicularly bisects line segment P2Q2.

2. The refrigerator according to claim 1, characterized in that, Within the projection of the plane containing the top wall of the housing, on the side of the housing closest to the door, a displacement coordinate system AOB is established; wherein, in the displacement coordinate system AOB, OB is perpendicular to the plane containing the retrieval port, and the direction from the retrieval port to the front wall of the door when it is closed is positive; OA is parallel to the plane containing the retrieval port, and the direction from the second side wall to the first side wall is positive; the displacement coordinate system AOB is a stationary coordinate system relative to the housing; The door has a rear wall disposed opposite to the front wall of the door; During the process of the door opening from the closed state to the second angle G2, the door has a first directional displacement along a direction parallel to the rear wall of the door and pointing away from the side wall of the door. Displacement along a second direction parallel to the side wall of the door, away from the rear wall of the door. Among them, the displacement in the first direction The displacement component on axis A is Second directional displacement The displacement component on axis A is in, 3. The refrigerator according to claim 2, characterized in that, The door is opened from the second angle G2 to the maximum angle G. max During the process, the door body has a first directional displacement along a direction parallel to the rear wall of the door and pointing away from the side wall of the door. Displacement along a second direction parallel to the side wall of the door and pointing towards the rear wall of the door. Among them, the displacement in the first direction The displacement component on axis A is Second directional displacement The displacement component on axis A is in, 4. The refrigerator according to claim 2 or 3, characterized in that, During the opening of the door, the displacement in the first direction The displacement along the B-axis is Second directional displacement The displacement along the B-axis is in, 5. The refrigerator according to claim 2 or 3, characterized in that, in, G2 < 90°, G5 ≥ 90°.

6. The refrigerator according to claim 1, characterized in that, In the plane containing the top wall of the housing, the midpoint of the line connecting the guide center axis P and the guide center axis Q is denoted as the center point I of the axis. During the process of the door opening from the closed state to the second angle G2, the central point I of the axis moves towards the side wall of the door and away from the front wall of the door; The door is opened from the second angle G2 to the maximum angle G. max During the process, the central point I of the axis moves towards the side wall and front wall of the door.

7. The refrigerator according to claim 6, characterized in that, The door is opened from the closed state to its maximum angle G. max During the process, the trajectory of the center point I of the axis is a circular arc or an elliptical arc.

8. The refrigerator according to claim 1, 2, 3, 6, or 7, characterized in that, A door seal is provided on the wall surface opposite to the front wall of the door. When the door is closed, the door seal cooperates with the front face of the box to seal the opening. The door seal has a side sealing edge that is close to the side wall of the door and away from the front wall of the door. The first body sidewall is provided with a first reference plane M1 on the side near the second body sidewall, which is perpendicular to the plane where the retrieval port is located, and the first reference plane M1 is the middle plane between the first body sidewall and the second body sidewall; the first reference plane M1 remains stationary relative to the box body during the opening of the door body relative to the box body. The door is opened to its maximum angle G. max During the process, the side sealing edge first moves towards the first reference plane M1, and then moves away from the first reference plane M1.

9. The refrigerator according to claim 8, characterized in that, The plane where the retrieval and placement port is located is denoted as the second reference plane M2. The second reference plane M2 remains stationary relative to the box body during the opening process of the door body relative to the box body. The door is opened to its maximum angle G. max During the process, the side sealing edge first moves towards the first reference plane M1 and the second reference plane M2, then moves towards the first reference plane M1 and away from the second reference plane M2, and then moves away from the first reference plane M1 and the second reference plane M2.

10. The refrigerator according to claim 8, characterized in that, The door is opened from the closed state to its maximum angle G. max During the process, the side sealing edge first moves towards the first reference plane M1 and away from the second reference plane M2, and then moves away from the first reference plane M1 and the second reference plane M2.

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