refrigerator

Abstract

The present invention provides a refrigerator, which includes 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 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 both matched with the guide portion to enable the door to open the access opening and move inward a certain distance; the movement track of the first hinge shaft and the movement track of the second hinge shaft at least partially overlap; the door has a first side edge away from the cabinet when the door is closed, and a second side edge located on the side of the first side edge close to the cabinet; the door is opened to a maximum angle G max During the process, the movement trajectory of the first side edge and the movement trajectory of the second side edge are both arc-shaped. The refrigerator of the present invention accurately controls the rotation of the door body, so that the door body will not exceed or exceed the side of the box body too much when opening, and the door body can move smoothly and stably when opening.

Description

Technical Field

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

[0002] Nowadays, most refrigerators are placed in cabinets to achieve embedded installation. For embedded refrigerators, due to the space limitations of the cabinets, in order to ensure that the door can be opened effectively, the corners of the door must not exceed the size of the cabinet too much during the opening process. At present, in order to meet the needs of embedded systems, most of them control the door to move inward while rotating and opening by setting a double shaft on one of the door and the hinge, and a guide structure that cooperates with the double shaft on the other to meet the embedded installation requirements. The combination of the double shaft and the guide allows the door to move inward during opening. The double shaft moves along its own trajectory under the guidance of the guide structure. The guide structure formed is relatively scattered and occupies a large space. Summary of the Invention

[0003] The present invention solves one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the present application aims to provide a refrigerator whose hinge structure ensures that the door does not extend beyond or extends too far beyond the side of the refrigerator body when opened.

[0005] The refrigerator according to the present application comprises:

[0006] The box body defines a storage chamber having an access opening; the box body has a first side wall and a second side wall arranged opposite to each other;

[0007] A door body, used for opening or closing the access opening;

[0008] A hinge assembly connecting the door body and the box body so that the door body can rotate relative to the box body; the hinge assembly includes:

[0009] A guide portion located at an end of the door body close to the side wall of the first body; the guide portion has a curved guide track line;

[0010] A first hinge shaft and a second hinge shaft are fixed to the box body; when the door body is opened, the first hinge shaft and the second hinge shaft simultaneously move in a curved line relative to the guide portion along the guide trajectory, and the door body opens the access opening and moves inward a certain distance; wherein the motion trajectory of the first hinge shaft and the motion trajectory of the second hinge shaft at least partially overlap;

[0011] The door body has a first side edge away from the box body when the door body is closed, and a second side edge located on a side of the first side edge close to the box body;

[0012] The door body opens to the maximum angle G max During the process, the motion trajectory of the first side edge and the motion trajectory of the second side edge are both arc-shaped.

[0013] In some embodiments of the present application, the plane where the access opening is located is recorded as a second reference plane M2, and a first reference plane M1 perpendicular to the second reference plane M2 is provided on a side of the first body sidewall close to the second body sidewall, and the first reference plane M1 is a midplane between the first body sidewall and the second body sidewall; the first reference plane M1 and the second reference plane M2 remain stationary relative to the box body during the opening process of the door body relative to the box body;

[0014] In the projection of the top wall of the box, the door is opened to the maximum angle G max During the process, the first side edge first moves away from the first reference plane M1 and toward the second reference plane M2, and then moves toward the first reference plane M1 and the second reference plane M2;

[0015] The second side edge first moves toward the direction approaching the first reference plane M1 and the second reference plane M2, then moves toward the direction approaching 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.

[0016] In some embodiments of the present application, the door body comprises a door front wall away from the box body when the door body is closed, and a door side wall connected to the door front wall and close to the guide portion;

[0017] A door seal is provided on the wall surface of the door body opposite to the door front wall, and the door seal cooperates with the front end surface of the box body to seal the access opening when the door body is closed, and the door seal has a side sealing edge close to the door side wall and away from the door front wall;

[0018] The door body opens to the maximum angle G max During the process, the movement trajectory of the side sealing edge is arc-shaped.

[0019] In some embodiments of the present application, the door is opened to G F When , the distance between the side sealing edge and the first reference plane M1 is the smallest;

[0020] Pass through the door body to open to G F The side sealing edge F when the door is opened and the plane parallel to the first reference plane M1 is defined as a third reference plane M3, and the third reference plane M3 remains stationary relative to the box body during the opening process of the door body relative to the box body;

[0021] The second side edge is marked as N, and the side sealing edge is marked as F; when the door body is opened to the maximum angle G max When the second side edge N is located on the side of the side sealing edge F away from the third reference plane M3 in the projection of the plane where the top wall of the box body is located, the angle between the straight line FN where the side sealing edge F and the second side edge N are located and the third reference plane M3 is any value between 0° and 8°.

[0022] In some embodiments of the present application, the motion trajectory of the first side edge, the motion trajectory of the second side edge, and the motion trajectory of the side sealing edge are concentric circles.

[0023] In some embodiments of the present application, the common center of the circle where the first side edge trajectory line is located, the circle where the second side edge trajectory line is located, and the circle where the side sealing edge trajectory line is located is recorded as the edge trajectory center O L The radius of the circle where the first side edge trajectory line is located is recorded as the first side edge radius R C1 The radius of the circle where the second side edge trajectory line is located is recorded as the second side edge radius R C2 The radius of the circle where the side sealing edge trajectory line is located is recorded as the side sealing edge radius R F ; Among them, R C1 <R C2 <R F .

[0024] In some embodiments of the present application, 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;

[0025] In the plane where the top wall of the box is located, the distance between the guide center axis P and the second reference plane M2 is recorded as D1, and the distance between the guide center axis Q and the second reference plane M2 is recorded as D2; the center of the ridge trajectory O L The distance from the second reference plane M2 is recorded as D3; wherein D1<D2<D3.

[0026] In some embodiments of the present application, in the plane where the top wall of the box is located, the distance between the guide center axis P and the first body side wall is recorded as H1, and the distance between the guide center axis Q and the first body side wall is recorded as H2; the center of the edge trajectory O L The distance from the side wall of the first body is recorded as H3; wherein, H2

[0027] In some embodiments of the present application,

[0028] In the projection of the plane where the top wall of the box is located, the center of the edge trajectory O L The distance from the guide center axis P is denoted as |O L P|, the 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|Equal.

[0029] In some embodiments of the present application, the center of the edge trajectory O L It coincides with the guide circle center O0 of the guide trajectory when the door body is closed.

[0030] Compared with the prior art, the advantages and positive effects of the present invention are:

[0031] The refrigerator according to the present invention comprises a box body defining a storage chamber with an access opening, a door body for opening or closing the access opening, and a hinge assembly connecting the door body and the box body so that the door body can rotate relative to the box body; the box body has a first side wall and a second side wall arranged opposite to each other; the hinge assembly comprises a guide portion located at an end of the door body near the first side wall, a first hinge shaft and a second hinge shaft fixed to the box body; the guide portion has a curved guide track line; the first hinge shaft and the second hinge shaft both cooperate with the guide portion; during the opening process of the door body, the first hinge shaft and the second hinge shaft simultaneously perform a curved movement along the guide track line relative to the guide portion, and the door body opens the access opening and moves inward a certain distance; wherein the movement track of the first hinge shaft and the movement track of the second hinge shaft at least partially overlap; the door body has a first side edge away from the box body when the door body is closed, and a second side edge located on the side of the first side edge close to the box body; the door body is opened to a maximum angle G max During the process, the movement trajectory of the first side edge and the movement trajectory of the second side edge are both arc-shaped. The refrigerator of the present invention accurately controls the rotation of the door body, so that the door body will not exceed or exceed the side of the box body too much when opening, and the door body can move smoothly and stably when opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a perspective view of a refrigerator of the present invention;

[0033] Figure 2 is a top view of the refrigerator of the present invention;

[0034] Figure 3 1 is a schematic diagram showing the relative positions of the hinge assembly of the refrigerator of the present invention;

[0035] Figure 4 2 is a schematic structural diagram of a second hinge member on a door of a refrigerator according to the present invention;

[0036] Figure 5 This is a view of the hinge of the refrigerator in the first embodiment of the present invention when the door is in a closed state;

[0037] Figure 6 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0038] Figure 7 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0039] Figure 8 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0040] Figure 9 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0041] Figure 10 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0042] Figure 11 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0043] Figure 12 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0044] Figure 13 Schematic diagram of the movement of the first side edge, the second side edge and the side sealing edge during the opening process of the door body of the refrigerator in the first embodiment of the present invention;

[0045] Figure 14 Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion when the door body of the refrigerator in the first embodiment of the present invention is opened to different angles;

[0046] Figure 15 Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion when the refrigerator in the first embodiment of the present invention is in a closed state;

[0047] Figure 16 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0048] Figure 17 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0049] Figure 18 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0050] Figure 19 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0051] Figure 20 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0052] Figure 21 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0053] Figure 22 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion;

[0054] Figure 23 This is a simplified diagram showing the relative positions of the door and the refrigerator body when the door is closed in the first embodiment of the present invention;

[0055] Figure 24 The door opening angle of the refrigerator in the first embodiment of the present invention is The relative position diagram of the door body and the box body;

[0056] Figure 25 The door opening angle of the refrigerator in the first embodiment of the present invention is The relative position diagram of the door body and the box body;

[0057] Figure 26 This is a schematic diagram showing the relative positions of the door and the refrigerator body when the door is opened at an angle of 90° in the first embodiment of the present invention;

[0058] Figure 27 The door opening angle of the refrigerator in the first embodiment of the present invention is The relative position diagram of the door body and the box body;

[0059] Figure 28 This is a comparison diagram of the position of the door body when it is opened to G1 in the first embodiment of the refrigerator of the present invention and the position of the door body when it is rotated from the closed state to G1 with the center point I of the closed axis as the rotation axis;

[0060] Figure 29This is a comparison diagram of the position of the door body when it is opened to G2 in the first embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G1 and rotated to G2 with the center point I of the door body when it is opened to G1 as the rotation axis;

[0061] Figure 30 1 is a comparison diagram of the position of the door body when it is opened to G3 in the first embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G2 and rotated to G3 with the center point I of the door body when it is opened to G2 as the rotation axis;

[0062] Figure 31 This is a comparison diagram of the position of the door body when it is opened to G4 in the first embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G3 and rotated to G4 with the center point I of the door body when it is opened to G3 as the rotation axis;

[0063] Figure 32 1 is a comparison diagram of the position of the door body when it is opened to G5 in the first embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G4 and rotated to G5 with the center point I of the door body when it is opened to G4 as the rotation axis;

[0064] Figure 33 1 is a comparison diagram of the position of the door when it is opened to G6 in the first embodiment of the refrigerator of the present invention and the position of the door when it is opened to G5 and rotated to G6 with the center point I of the door when it is opened to G5 as the rotation axis;

[0065] Figure 34 The door of the refrigerator in the first embodiment of the present invention is opened to G max The door body rotates from the open to G6 state with the center point I of the axis when it is open to G6 as the rotation axis to G max Position comparison chart when

[0066] Figure 35 Schematic diagram of the movement of the roller along the convex curve in the seventh embodiment of the refrigerator of the present invention;

[0067] Figure 36 Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the door opening process in the second embodiment of the refrigerator of the present invention;

[0068] Figure 37 This is a schematic diagram of the partial structure of the hinged refrigerator near the hinge area when the door is opened to 90 degrees in the second embodiment of the refrigerator of the present invention;

[0069] Figure 38 Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the door opening process in the third embodiment of the refrigerator of the present invention;

[0070] Figure 39 Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the door opening process of the fourth embodiment of the refrigerator of the present invention;

[0071] Figure 40 1 is a schematic structural diagram of the second hinge member at the end of the door body in the fourth embodiment of the refrigerator of the present invention;

[0072] Figure 41 1 is a schematic diagram of the partial structure of the refrigerator near the hinge area when the door is opened and closed in the fourth embodiment of the refrigerator of the present invention;

[0073] Figure 42 1 is a comparison diagram of the position of the door body when it is opened to G1 and the position of the door body when it is rotated from the closed state to G1 with the center point I of the door body when it is closed as the rotation axis;

[0074] Figure 43 1 is a comparison diagram of the position of the door body when it is opened to G2 in the fourth embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G1 and rotated to G2 with the center point I of the door body when it is opened to G1 as the rotation axis;

[0075] Figure 44 1 is a comparison diagram of the position of the door body when it is opened to G3 in the fourth embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G2 and rotated to G3 with the center point I of the door body when it is opened to G2 as the rotation axis;

[0076] Figure 45 1 is a comparison diagram of the position of the door body when it is opened to G4 in the fourth embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G3 and rotated to G4 with the center point I of the door body when it is opened to G3 as the rotation axis;

[0077] Figure 46 1 is a comparison diagram of the position of the door body when it is opened to G5 (= G6) in the fourth embodiment of the refrigerator of the present invention and the position of the door body when it is opened to G4 and rotated to G5 with the center point I of the door body when it is opened to G4 as the rotation axis;

[0078] Figure 47 The door of the refrigerator in the fourth embodiment of the present invention is opened to G max The door body rotates from the open position to the G5 (= G6) state with the center point I of the axis when it is open to G5 (= G6) as the rotation axis to the G5 (= G6) state. max Position comparison chart when

[0079] Figure 48 Schematic diagram of the movement of the first side edge, the second side edge and the side sealing edge during the opening process of the door body of the fourth embodiment of the refrigerator of the present invention;

[0080] Figure 49 Schematic diagram of the positions of the first hinge shaft relative to the guide portion and the second hinge shaft relative to the guide portion during the door opening process of the fifth embodiment of the refrigerator of the present invention;

[0081] Figure 501 is a schematic structural diagram of the second hinge member at the end of the door body in the fifth embodiment of the refrigerator of the present invention;

[0082] Figure 51 1 is a schematic diagram of the partial structure of the refrigerator near the hinge area when the door is opened and closed in the fifth embodiment of the refrigerator of the present invention;

[0083] Figure 52 This is a schematic diagram of the partial structure of the lower end of the door body near the hinge area in the sixth embodiment of the refrigerator of the present invention;

[0084] Figure 53 This is a schematic diagram of the assembly structure of the track block and the locking block at the lower end of the door body in the sixth embodiment of the refrigerator of the present invention;

[0085] Figure 54 It is a schematic diagram of the exploded structure of the track block at the lower end of the door body, the locking block and the door body in the sixth embodiment of the refrigerator of the present invention.

[0086] In the above figures: box body 10; door body 30; door front wall 31; door side wall 32; door rear wall 33; first side edge W; second side edge N; side sealing edge F;

[0087] Hinge plate 40; connecting portion 401; extending portion 402; stopping portion 403; hooking 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 portion 50; guide trajectory 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; trajectory block 70; annular plate 71; circumferential groove wall 72; notch 73; groove bottom 74; accommodating portion 34; mounting hole 35; receiving portion 36; locking block 80; root connection portion 81; hook portion 82. DETAILED DESCRIPTION

[0088] The present invention is described in detail below by way of exemplary embodiments, but it should be understood that elements, structures, and features of one embodiment may be beneficially combined in other embodiments without further description.

[0089] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0090] The terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," "third," "fourth," or "fifth" may explicitly or implicitly include one or more of such features.

[0091] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0092] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. In the accompanying drawings, the side of the refrigerator facing the user when in use is defined as the front side, and the side opposite thereto is defined as the rear side.

[0093] Example 1

[0094] Reference Figure 1 The refrigerator includes a cabinet 10 having a storage compartment, a door 30 connected to the cabinet 10 to open and close the storage compartment, and a refrigeration device that supplies cold air to the storage compartment. The cabinet 10 includes an inner container defining the storage compartment, an outer shell connected to the outer side of the inner container to form the appearance of the refrigerator, and an insulating layer provided between the inner container and the outer shell to insulate the storage compartment.

[0095] The housing 10 defines a plurality of storage compartments. In this embodiment, the plurality of storage compartments include a refrigerator compartment and a freezer compartment below the refrigerator compartment. It should be noted that the arrangement of the plurality of storage compartments of the refrigerator is not limited to the above example.

[0096] The front end of the storage chamber is formed with an access opening for placing food into or taking food out of the storage chamber. A rotatable door 30 is provided on the box body 10 to open or close the access opening. Specifically, the door 30 is rotatably connected to the box body 10 via an upper hinge assembly and a lower hinge assembly.

[0097] The hinge assembly includes a first hinge member and a second hinge member, and the first hinge member cooperates with the second hinge member and can rotate relative to each other. In this embodiment, the box body 10 includes a first side wall and a second side wall (i.e., the left and right side walls of the box body 10) that are arranged opposite each other. The first hinge member is arranged on the box body 10 and is close to one of the side walls. In this embodiment, the first hinge member is close to the first side wall as an example for description. The second hinge member is arranged at the end of the door body 30 close to the first hinge member. The first hinge member cooperates with the second hinge member to allow the box body 10 and the door body 30 to rotate relative to each other. The door body 30 has a door front wall 31 that is away from the box body 10 when the door body 30 is closed, a door rear wall 33 that is arranged opposite to the door front wall 31, and a door side wall 32 that is close to the first hinge member and connected to the door front wall 31. For example, when the first hinge is located on the right side of the box body 10 , the right side of the door body 30 is the door side wall 32 when it is closed; when the first hinge is located on the left side of the box body 10 , the left side wall of the door body 30 is the door side wall 32 when it is closed.

[0098] The front wall 31 and the side wall 32 of the door body 30 intersect to form a first side edge W, and the side wall 32 and the rear wall 33 intersect to form a second side wall N. When the door body 30 is closed, the first side edge W is located on the side of the second side edge N away from the box body 10. It should be noted that when the front wall 31 and the side wall 32 are both planes, the intersection line of the two planes is the theoretical first side edge W (similarly, the theoretical second side edge N is the intersection line of the two planes of the side wall 32 and the rear wall 33); in actual production and processing settings, the intersection of the front wall 31 and the side wall 32 is a rounded transition setting, thereby forming a curved surface at the intersection of the front wall 31 and the side wall 32; on the curved surface at the intersection of the front wall 31 and the side wall 32, any straight line extending along the height direction of the door body 30 can represent the first side edge W (the same applies to the second side edge N). For the convenience of description in this application, the theoretical first side edge W and the theoretical second side edge N are used for description. In addition, the plane passing through the center of mass of the door body 30 and parallel to the door front wall 31 is denoted as the center of mass plane C. During the opening of the door body 30, the center of mass plane C moves along with the door body 30. In this embodiment, the center of mass plane C is determined by taking the geometric center of the door body 30 as the center of mass. That is, the center of mass plane C is the midplane between the door front wall 31 and the door rear wall 33. The distance between the center of mass plane C and the door front wall 31 is equal to the distance between the center of mass plane C and the door rear wall 33.

[0099] A door seal 20 is provided on the rear wall of the door 30. When the door 30 is closed, the door seal 20 abuts against the front face of the cabinet surrounding the access opening, effectively sealing the connection between the door 30 and the cabinet 10. This ensures that the door 30 seals the access opening and prevents cold air from escaping. Optionally, the door seal 20 is annular and includes side seals adjacent to the door sidewalls 32. The edges of the door seal 20 (side seals) adjacent to the door sidewalls 32 and distal to the door front wall 31 are designated as side seal edges F.

[0100] 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 box body 10, and an extending portion 402 extending forward from the connecting portion 401 and in the shape of a horizontal plate. The connecting portion 401 can be fastened to the top wall of the box body 10 by fasteners such as screws, pins and bolts. Specifically, for the hinge at the upper end of the door body 30, the connecting portion 401 is connected to the top wall of the box body 10. For the hinge at the lower end of the door body 30, the connecting portion 401 is connected to the front end surface of the box body 10. Particularly, a first hinge axis 41 and a second hinge axis 42 are formed on the extending portion 402 of the first hinge member; wherein, the second hinge axis 42 is located on the side of the first hinge axis 41 away from the side wall of the first body.

[0101] The second hinge member includes a guide portion 50 located at the end of the door body 30 near the first hinge member. Both the first hinge axis 41 and the second hinge axis 42 mate with the guide portion 50. During the opening or closing of the door body 30, the first hinge axis 41 moves relative to the guide portion 50, and the second hinge axis 42 moves relative to the guide portion 50. The trajectory along which the guide portion 50 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 referred to as the guide trajectory S. It should be noted that the guide trajectory S is a smooth curve. The guide trajectory S includes a first trajectory S1 extending along the curve toward the door sidewall 32 and the door rear wall 33; a second trajectory S2 extending along the curve toward the door sidewall 32 and away from the door rear wall 33; and a third trajectory S3 extending along the curve away from the door sidewall 32 and the door rear wall 33. The first trajectory S1, the second trajectory S2, and the third trajectory S3 are smoothly connected. Under the guidance of the guide portion 50, the first hinge shaft 41 performs smooth curved motion relative to the door body 30 throughout its entire length. The second hinge shaft 42 also performs smooth curved motion relative to the door body 30 throughout its entire length. The motion trajectory of the first hinge shaft 41 relative to the guide portion 50 and the motion trajectory of the second hinge shaft 42 relative to the guide portion 50 at least partially overlap, thereby increasing the overlap ratio between the first hinge shaft 41, the second hinge shaft 42, and the guide portion 50. This results in a compact hinge assembly structure, improves the efficiency of the motion of the first hinge shaft 41 and the second hinge shaft 42 relative to the guide portion 50, and ensures smooth and stable opening of the door 30.

[0102] It should be noted that, in this embodiment, the guide trajectory line S is illustrated as being connected by three trajectory lines, and the specific setting of the guide trajectory line S is limited by this; similarly, without being subject to the above restrictions, the guide trajectory line S can be set to include at least one of the above three segments: the first trajectory line S1, the second trajectory line S2, and the third trajectory line S3.

[0103] As described above, the first hinge shaft 41 and the second hinge shaft 42 are formed on the first hinge member connected to the box body 10 to form a limited axis for guiding the movement of the door body 30. Specifically, the first hinge shaft 41 and the second hinge shaft 42 extend in the vertical direction (the height direction of the box body 10) to adapt to the guide portion 50 provided on the door body 30.

[0104] As a configurable method, a straight line passing through the point where the distance between guide trajectory S and door rear wall 33 is minimum (first guide point P1) and parallel to door side wall 32 is designated as first straight line K1; a straight line perpendicular to first straight line K1 and having two intersections with guide trajectory S is designated as second straight line K2; the midpoint of the line segment defined by the two intersections of second straight line K2 and guide trajectory S lies on first straight line K1. The above configuration ensures symmetry of guide trajectory S within the interval where a single y value corresponds to two x values ​​in the XOY coordinate system, resulting in regular movement of first hinge axis 41 and second hinge axis 42 relative to guide trajectory S and high detectability.

[0105] As a possible configuration, a straight line passing through the point where the guide trajectory S is at its smallest distance from the door rear wall 33 (the first guide point P1) and parallel to the door side wall 32 is designated as the first straight line K1. A straight line perpendicular to the first straight line K1 and having two intersections with the guide trajectory S is designated as the second straight line K2. The midpoint of the line segment defined by the two intersections of the second straight line K2 and the guide trajectory S deviates from the first straight line K1. In other words, the midpoint of the line segment defined by the two intersections of the second straight line K2 and the guide trajectory S does not lie on the first straight line K1.

[0106] As a configurable manner, 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 42 and the second hinge axis 42 and the door rear wall 33 is the smallest.

[0107] In this embodiment, the first hinge axis 41 and the second hinge axis 42 are provided on the extensions 402 at the upper and lower ends of the door body 30, and the guide portions 50 are provided at the upper and lower ends of the door body 30. It should be noted that the configuration of this embodiment is not limited to providing the same hinge structure at both the upper and lower ends of the door body 30. It can be configured to connect the door body 30 and the box body 10 as needed to achieve synchronous movement of the upper and lower ends of the door body 30.

[0108] In this embodiment, Figure 2-Figure 3As shown, the plane where the side of the box body 10 close to the hinge plate 40 is located (the first body side wall) is defined as the reference plane M0; the refrigerator is housed in the cabinet 100, and the side of the reference plane M0 close to the cabinet 100 is the outer side, and the opposite side close to the storage room is the inner side. When the door body 30 is closed, the door front wall 31 is flush with the front end surface of the cabinet 100 ("flush" includes any situation where the distance between the two planes is less than 2mm). When the refrigerator is placed in the cabinet 100 for use, in order to prevent factors such as uneven ground and deformation of the cabinet 100, when the cabinet 100 is set in size, the distance between the cabinet 100 and the side of the refrigerator (the first body side wall, i.e., the reference plane M0) is recorded as μ; μ∈μ3,5], unit: mm. After the space that the cabinet 100 can accommodate is determined, the refrigerator is placed in the cabinet 100. It is necessary to ensure that the door 30 does not interfere with the cabinet 100 when it is opened, so as to effectively open the access opening; in order to ensure that the refrigerator door 30 opens normally, the first side edge W of the door 30 cannot extend too far beyond the side of the cabinet 10 (reference plane M0) during the rotation process, so as to avoid the first side edge W colliding with the cabinet 100 and causing the door 30 to be unable to open normally. In addition, because the lateral space of the cabinet 100 is occupied by the refrigerator cabinet on the one hand, the other part needs to be left for the door 30 to extend beyond the cabinet when it is opened; therefore, the overall lateral size of the refrigerator will be affected by the distance that the door 30 extends beyond the first side wall when it is opened. When the space of the cabinet 100 is fixed, the greater the distance that the door 30 extends beyond the cabinet 10 when it is opened, the smaller the lateral size of the cabinet 10; conversely, the smaller the distance that the door 30 extends beyond the cabinet 10 when it is opened, the larger the size of the cabinet 10.

[0109] To meet the above requirements, the door body 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 surface of the box body 10 (reference plane M0). Taking the hinge plate 40 as an example, the inner side is the left side, that is, the door body 30 needs to be able to move to the left; taking the hinge plate 40 as an example, the inner side is the right side, that is, the door body 30 needs to be able to move to the right. In the following description, the right side wall of the box body 10 is used as the first body side wall and the reference plane M0 is used.

[0110] At present, in order to meet the inward movement of the door body 30 during the opening process of the door body 30 guided by the dual-axis setting, the guide trajectory formed by the guide structure (guide groove) guiding the movement of the dual axes is irregular in shape based on the setting of the dual-axis and guide structure; the above setting leads to poor coordination and unstable movement of the dual axes, resulting in unsmooth movement and poor stability of the door body 30 during the entire opening process. In addition, in order to meet the requirement of the door body moving inward when opening under the dual-axis structure setting, since it is necessary to have both the movement trend of the door body opening and the dual-axis structure setting, the structure setting has high requirements on the relative position of the dual axes and the coordination degree of the guide structure cooperating with each axis, and the processing accuracy has a decisive influence on controlling the final movement trend of the door body; and in the current dual-axis guide door body 30 rotation opening and inward movement setting, on the one hand, for the setting of the dual axes and dual guide grooves, since there are two guide grooves, the relative position accuracy of the two guide grooves during processing is high, and there is often a situation of low processing accuracy; on the other hand, for the setting of a single guide groove, due to the irregular characteristics of the guide groove, on the one hand, there is a situation of low processing accuracy, and on the other hand, the irregular characteristics of the guide groove easily cause the guide groove to wear and affect the control accuracy; furthermore, in the current dual-axis guide door body 30 rotation opening and inward movement structure setting, due to the irregular characteristics of the structure, it is impossible to effectively detect the processing accuracy and coordination accuracy of the dual axes and the guide structure (guide groove), and the precision reduction caused by manufacturing cannot be discovered in time and then effectively adjusted, resulting in the product being unable to accurately control the door body to perform complex rotational inward movement. In addition, in order to meet the inward movement of the door body 30, 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, and the guide structure formed is relatively dispersed and occupies a large space.

[0111] like Figure 5 As shown, in some embodiments of the present application, the first hinge axis 41 is located on the side of the second hinge axis 42 close to the first body side wall and the access opening. In the projection of the top wall of the box body 10, the angle between the straight line where the center axis of the first hinge axis 41 and the center axis of the second hinge axis 42 are located and the plane where the access opening is located is recorded as γ, and γ is an acute angle. As a setting method, γ is any value between 40° and 60°. The above setting limits the position of the first hinge axis 41 and the second hinge axis 42 relative to the plane where the access opening is located. On the one hand, it makes the structure of the first hinge axis 41 and the second hinge axis 42 compact. On the other hand, it makes the first hinge axis 41 and the second hinge axis 42 efficiently utilize the guide part 50, so as to increase the maximum angle that the door body 30 can open under the same setting of the guide part 50, thereby ensuring the effectiveness of the door body 30 opening and facilitating the retrieval of objects.

[0112] In some embodiments of the present application, in the projection of the plane where the top wall of the box body 10 is located, the projections of the first hinge axis 41 and the second hinge axis 42 are separated; that is, the first hinge axis 41 and the second hinge axis 42 are two separated defined axes.

[0113] In some other embodiments of the present application, the first hinge axis 41 is connected to the second hinge axis 42. As a setting method, in the projection of the plane where the top wall of the box is located, the projection of the first hinge axis 41 and the projection of the second hinge axis 42 are circumscribed or intersected.

[0114] It should be noted that, regardless of whether the first hinge shaft 41 and the second hinge shaft 42 are separately provided or integrally formed, the cross-sections of the first hinge shaft 41 and the second hinge shaft 42 are not limited to circular. In the present invention, during the opening process of the door body 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 can satisfy the above limiting cooperation. For example, it can be provided that a contact ridge is formed on the first hinge shaft 42 or the second hinge shaft 42 to cooperate with the limiting boundaries on the guide portion 50 that are equidistant from the guide trajectory line S. This can also meet the limiting and guiding requirements and realize the relative rotation of the first hinge member and the second hinge member.

[0115] The distance between the first hinge shaft 41 and the second hinge shaft 42 is small. When the door body 30 is opened, the movement trajectory of the central axis of the first hinge shaft 41 relative to the guide trajectory line S mostly overlaps with the movement trajectory of the central axis of the second hinge shaft 42 relative to the guide trajectory line S. Specifically, relative to the guide trajectory line S, when the central axis of the second hinge shaft 42 moves to the position where the central axis of the first hinge shaft 41 is relative to the guide trajectory line S when the door body 30 is closed, the movement trajectory of the central axis of the second hinge shaft 42 relative to the guide trajectory line S begins to overlap with the movement trajectory of the central axis of the first hinge shaft 41 relative to the guide trajectory line S. The above arrangement of the present invention increases the overlap rate of the first hinge shaft 41, the second hinge shaft 42 and the guide portion 50, the structure of the hinge assembly is compact, the movement efficiency of the first hinge shaft 41 and the second hinge shaft 42 relative to the guide portion 50 is improved, and the smoothness and stability of the opening of the door 30 are ensured.

[0116] In some embodiments of the present application, the length of the guide trajectory line S on the side of the centroid plane C close to the door rear wall 33 is recorded as L1, and the length of the trajectory line S on the side of the centroid plane C close to the door front wall 31 is recorded as L2; ​​wherein, L1>L2. As a configurable method, L2:L1 is any value between 0 and 0.3. In the hinge assembly with the above trajectory characteristics, most of the travel of the first hinge shaft 41 and the second hinge shaft 42 guided by the guide portion 50 is located in the corner area of ​​the door body 30 close to the second side edge N; when the door body 30 is opened, the external force applied by the door opener is applied to the corner area of ​​the door body 30 diagonally to the second side edge N, and the applied external force is balanced with the force of the hinge assembly located at the diagonal position, so that the force on the door body 30 is more balanced, which helps to increase the stability of the door body 30 when opening.

[0117] As a configurable method, the guide trajectory line 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 portion 50 guides the movement of the first hinge axis 41, so that the central axis of the first hinge axis 41 moves along the arc; at the same time, the guide portion 50 guides the movement of the second hinge axis 42, so that the central axis of the second hinge axis 42 moves along the arc.

[0118] It should be noted that the circular motion mentioned above refers to circular motion with equal radius. Since the first hinge shaft 41 and the second hinge shaft 42 both move along the guide trajectory line S relative to the guide portion 50, the circular arc trajectories formed by the first hinge shaft 41 and the second hinge shaft 42 moving relative to the guide portion 50 are cocircular. In addition, it should be supplemented that the circular arcs involved in the present invention include standard circular arcs in the standard mathematical definition (the portion between any two points on the circle), and also include arcs that deviate from the standard circular arc in the standard mathematical definition due to processing errors or micro-deformation or micro-wear of components or reserved gaps, but still have arc characteristics (such as fluctuations around the arc with small deviations). In the following description of this embodiment, the guide trajectory line S is used as an example of the circular arc.

[0119] As a configuration option, the guide portion 50 is configured as a guide groove; corresponding to the configuration of the guide trajectory S as a circular arc, the guide groove is a circular arc groove. That is, the center trajectory of the guide groove is the guide trajectory S. This configuration allows the first hinge axis 41 and the second hinge axis 42, which cooperate with the guide portion 50, to simultaneously perform circular motion relative to the guide portion 50, effectively coordinating the motion of the first hinge axis 41 and the second hinge axis 42, and enhancing the smoothness and stability of the door body 30's rotational opening.

[0120] It can be arranged that the center of the circle where the arc-shaped guide track line S is located is located on the side thereof close to the door front wall 31 .

[0121] Combine Figure 4As shown, within the projection of the plane where the top wall of the box body 10 is located, the door side wall 32 is the Y-axis, and the plane passing through the first side edge W and parallel to the access opening is the X-axis, that is, the plane where the door front wall 31 is located is the X-axis (the door front wall 31 and the door side wall 32 can be set to be perpendicular); wherein, the X-axis and the Y-axis are perpendicular and intersect at the origin O; the direction from the door front wall 31 to the door rear wall 33 is the positive direction of the Y-axis, and the direction from the door side wall 32 to the end of the door body 30 opposite the door side wall 32 is the positive direction of the X-axis, forming a two-dimensional coordinate system XOY of the door body 30. It should be noted that the two-dimensional coordinate system XOY is a two-dimensional coordinate system that is stationary relative to the door body 30.

[0122] In the coordinate system XOY, the equation of the circle where the guide trajectory line S lies is: x = a + rcosθ, y = b + rsinθ; (a, b) are the coordinates of the center of the circle, recorded as the guide circle center O0; r is the radius of the guide circle O0, θ is a parameter, and (x, y) are the coordinates of the passing point;

[0123] The central angle of the guide circle O0 corresponding to the guide trajectory S is denoted as the guide central angle β. As a configurable method, the guide central angle β is an obtuse angle; β can be set to any value between 120° and 180°. This configuration effectively ensures that, in this embodiment, when the guide trajectory S is an arc, the maximum opening angle of the door body 30 is no less than 90°, allowing the rear wall 33 of the door body 30 to be displayed forward, facilitating the access of items.

[0124] As a configurable method, the arc segment of the guide circle O0 corresponding to the arc line S of the arc-shaped guide trajectory line S is θ∈μ[θ`1,θ`2], wherein θ`1∈μ is any value among [-20°, 20°]; θ`2∈μ is any value among [150°, 170°]. The above setting limits the size range of the space occupied by the guide part 50, reduces the size of the space occupied by the guide part 50 in the thickness direction of the door body 30, and enables the hinge assembly of the present invention to be applicable to thin-sized door bodies 30. As another configurable method, the arc segment of the guide circle O0 corresponding to the arc line S of the arc-shaped guide trajectory line S is θ∈μ[20°, 160°]; as another configurable method, the arc segment of the guide circle O0 corresponding to the arc line S of the arc-shaped guide trajectory line S is θ∈μ[-15°, 160°].

[0125] Combine Figure 4In some embodiments of the present application, the angle bisector of the angle formed by the door front wall 31 and the door side wall 32 is recorded as the first angle bisector V1; the angle bisector of the angle formed by the door rear wall 33 and the door side wall 32 is recorded as the second angle bisector V2; in this embodiment, the dihedral angle formed by the plane where the door front wall 31 is located and the plane where the door side wall 32 is located is 90°, and the dihedral angle formed by the plane where the door rear wall 33 is located and the plane where the door side wall 32 is located is also 90°; in the process of opening the door body 30 relative to the box body 10, the first angle bisector V1 and the second angle bisector V2 move with the door body 30 relative to the box body 10; that is, in the process of opening the door body 30, the first angle bisector V1 and the second angle bisector V2 remain stationary relative to the door body 30.

[0126] Among them, the first angular bisector V1 and the second angular bisector V2 intersect and divide the door body 30 into four areas, a first area close to the door side wall 32, a third area opposite to the first area, a second area close to the door rear wall 33 and adjacent to the first area, and a fourth area opposite to the second area.

[0127] In some embodiments of the present application, within the plane of the top wall of the box body 10, the guide portion 50 extends from the third area to the second area, and then from the second area to the first area; that is, the guide portion 50 is not within the fourth area; the above defines the position of the guide portion 50 at the end of the door body 30; relative to the front door wall 31, the guide portion 50 is close to the rear door wall 33; that is, the guide portion 50 is located in the corner area close to the second side edge N; when the door body 30 is opened, the external force applied by the door opener is applied to the corner area of ​​the door body 30 diagonally opposite the second side edge N, and the applied external force is balanced with the force of the hinge assembly located at the diagonal corner, so that the force on the door body 30 is more balanced, which helps to increase the stability of the door body 30 when opening. In addition, as a configurable method, the guide circle center O0 is located in the fourth area. The position of the above circle center further defines the size of the guide trajectory line S, thereby defining the size of the space it occupies.

[0128] like Figure 5-Figure 12 , Figure 14 In some embodiments of the present 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 parameters 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 decrease in order. 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.

[0129] The first guiding point P1 is the point where the distance between the guiding trajectory line S and the door rear wall 33 is the smallest; that is, O0P1 is perpendicular to the X-axis (door front wall 31). The sixth guiding point P6 is the point where the distance between the guiding trajectory line S and the door side wall 32 is the smallest; that is, O0P6 is perpendicular to the Y-axis (door side wall 32).

[0130] Furthermore, the guide trajectory S includes 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 parameters 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 decrease in order. 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 S.

[0131] It should be noted that, in the 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 door rear wall 33 is the smallest; that is, O0P3 is perpendicular to the X-axis;

[0132] As a configurable method, the straight line Q0P5 where the starting guide point Q0 and the fifth guide point P5 are located is parallel to the door front wall 31 (X axis); that is, the straight line Q0P5 where the starting guide point Q0 and the fifth guide point P5 are located is perpendicular to the door side wall 32 (Y axis).

[0133] As a configurable method, the midpoint I2 of the line segment P2Q2 between the second guide point P2 and the second guide point Q2 lies on O0P1. That is, O0P1 is the perpendicular bisector of P2Q2. Based on the 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 with the guide trajectory S lies on the first straight line K.

[0134] As mentioned above, in the present invention, the shape of the guide trajectory is limited, Q i Located in P i A side away from the door side wall 32; wherein, i is an integer, and i∈μ0,7].

[0135] 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 starting guide point Q0Q0 Greater than the parameter θ corresponding to the starting guidance point P0 P0 ; Parameter θ corresponding to the first guide point Q1 Q1 Greater than the parameter θ corresponding to the first guiding point P1 P1 ; Parameter θ corresponding to the second guide point Q2 Q2 Greater than the parameter θ corresponding to the second guiding point P2 P2 ; Parameter θ corresponding to the third guide point Q3 Q3 Greater than the parameter θ corresponding to the third guiding point P3 P3 ; Parameter θ corresponding to the fourth guide point Q4 Q4 Greater than the parameter θ corresponding to the fourth guiding point P4 P4 ; Parameter θ corresponding to the fifth guide point Q5 Q5 Greater than the parameter θ corresponding to the fifth guiding point P5 P5 ; Parameter θ corresponding to the sixth guide point Q6 Q6 Greater than the parameter θ corresponding to the sixth guiding point P6 P6 ; Parameter θ corresponding to the seventh guide point Q7 Q7 Greater than the parameter θ corresponding to the seventh guiding point P7 P7 ; On the guide circle O0, the chord length Q i P i is equal to the distance between the center axis of the first hinge axis 41 and the center axis of the second hinge 42. That is, during the opening process of the door body 30, the center axis of the first hinge axis 41 moves to the point P on the guide track line S. i When the central axis of the second hinge axis 42 moves to the point Q on the guide track line S i Place.

[0136] In some embodiments of the present application, the guide trajectory line S extends from the starting guide point Q0 along an arc with a radius of r, 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. The guide trajectory line S first extends along an arc with a radius of r toward the door side wall 32 and the door rear wall 33, then extends along an arc with a radius of r toward the door side wall 32 and away from the door rear wall 33, and then extends along an arc with a radius of r toward the door side wall 32 and away from the door rear wall 33. It should be noted that in the embodiments of the present application, the specific guide points and guide points defined above are defined for the purpose of subsequently explaining the movement of the first hinge shaft 41 and the second hinge shaft 42 relative to the guide portion 50 during the opening process of the door body 30.

[0137] In addition, it should be noted that, in this embodiment, the starting guide point Q0 corresponds to the position of the central axis of the second hinge axis 42 relative to the guide trajectory line S when the door body 30 is closed; the seventh guide point P7 corresponds to the position of the door body 30 when it is opened to the maximum angle G max The position of the central axis of the first hinge axis 41 relative to the guide trajectory line S.

[0138] In some embodiments of the present application, when designing the second hinge, taking into account the possibility that when closing the door body 30, excessive force is applied, which may cause the guide door body 30 to squeeze the door seal 30 and move excessively toward the box body 10, an extension section is provided at the end of the guide trajectory line S away from the door side wall 32 to reserve space for the above situation; that is, when the door body 30 is closed to 0° and continues to move in the closing direction, the guide part 50 has a reserved extension section to allow the first hinge axis 41 and the second hinge axis 42 to continue to move relative to the guide part 50. Similarly, in order to avoid the door body 30 from being opened to the maximum angle G max In order to prevent excessive force from being applied and causing the guide door body to move excessively (causing deformation, etc.), an extension section is provided at one end of the guide trajectory line S close to the door side wall 32 to reserve space for the above-mentioned situation. When space is reserved at at least one of the two ends of the guide portion 50, the starting guide point Q0 and the seventh guide point P7 are not the endpoints of the trajectory line on which they are located; 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 an implementable method, which essentially corresponds to the positions of the two hinge axes when the door body 30 is closed or opened to the maximum angle. The setting of the guide portion 50 is not limited by the starting guide point Q0 and the seventh guide point P7 being the endpoints of the guide trajectory line S.

[0139] like Figure 5 As shown, in this embodiment, when the door body 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 body 30 is in the closed state, the first hinge axis 41 and the second hinge axis 42 are both 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 door side wall and the access opening.

[0140] In summary, during the opening process of the door body 30, the center of the guide trajectory line S of the guide part 50 is located on the side close to the door front wall 31; the first hinge shaft 41 makes a circular motion relative to the guide part 50, and the second hinge shaft 42 makes a circular motion relative to the guide part 50, so that the door body 30 can move a certain distance inward (close to 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 body 30, and 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 body 30 and the cabinet 100 when it is opened, further reducing the restrictions 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.

[0141] Since the guide portion 50 and the first hinge shaft 41, as well as the guide portion 50 and the second hinge shaft 42, are in relative motion, when the door body 30 is opened, with the guide portion 50 as a stationary reference, it is equivalent to the first hinge shaft 41 moving under the restriction of the guide portion 50, and the second hinge shaft 42 moving under the restriction of the guide portion 50. For the sake of convenience, this application uses the guide portion 50 as a stationary reference, and the first hinge shaft 41 and the second hinge shaft 42 move relative to the reference.

[0142] It should be noted that the setting form of the guide trajectory line S described in the present invention is a standard setting (standard arc); in the actual production and manufacturing process of the product, in order to meet the assembly requirements, the matching error between the two door shafts and the guide part or the existence of gaps or processing errors, etc., causes 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 deviations from the standard guide trajectory line S as the main line; the deviated guide line S generated above also falls within the scope of protection of the present invention.

[0143] In this embodiment, the center axis of the first hinge axis 41 is recorded as the guide center axis P, and the center axis of the second hinge axis 42 is recorded as the guide center axis Q; in the projection of the plane where the top wall of the box body 10 is located, the line segment PQ is recorded as the axis line segment PQ; the midpoint of the axis line segment PQ is recorded as the axis center point I.

[0144] like Figure 5-Figure 22As shown, the movement of the first hinge shaft 41 along the guide portion 50 is equivalent to the movement of the guide center axis P along the guide trajectory line S, and the movement of the second hinge shaft 42 along the guide portion 50 is equivalent to the movement of the guide center axis Q along the guide trajectory line S, so that the door body 30 can move a certain distance inward (toward the side wall of the second body) while rotating, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door body 30, limiting the distance of the first side edge W beyond the reference plane M0 to no more than μ, and effectively avoiding interference between the door body 30 and the cabinet 100 when the door body 30 is opened. The movement of the door body 30 relative to the cabinet 10 is equivalent to the relative movement of the two within the plane where the top wall of the cabinet 10 is located (or in a plane parallel to the top wall of the cabinet 10); that is, the movement of the door body 30 relative to the cabinet 10 is a relative movement within a two-dimensional plane. Since the first hinge shaft 41 and the second hinge shaft 42 are fixed on the box body 10, the first hinge shaft 41 and the second hinge shaft 42 remain stationary relative to the box body 10. In the plane where the top wall of the box body 10 is located, the movement of the axial line segment PQ relative to the guide part 50 is equivalent to the movement of the box body 10 relative to the guide part 50, and is also equivalent to the movement of the door body 30 relative to the box body 10.

[0145] For ease of explanation, the following description uses the guide portion 50 (door body 30) as a stationary reference. The movement of the axis line segment PQ relative to the second hinge member (guide portion 50) on the door body 30, within the plane of the top wall of the box body 10, represents the movement of the box body 10 relative to the door body 30. In other words, the description of relative motion in this invention is based on relative motion within a two-dimensional plane. The relative nature of motion then allows us to derive the movement of the door body 30 relative to the box body 10.

[0146] In an embodiment of the present application, within the plane where the top wall of the box body 10 is located, the door body 30 rotates around the point that changes relative to the door body 30 during the opening process, and the point of change is the midpoint of the axial line segment PQ - the axial center point I; that is, in this embodiment, within the plane where the top wall of the box body 10 is located, the door body 30 rotates around the axial center point I that changes relative to it.

[0147] In this embodiment, Figure 5-Figure 22 As shown, under the constraints of the guide portion 50, the first hinge axis 41, and the second hinge axis 42, the refrigerator is opened at the maximum angle G max The door body 30 is opened from the closed state to the maximum angle G max During the process, when the door body 30 rotates and opens to a specific angle, the relative position of the first hinge shaft 41 relative to the guide portion 50 and the relative position of the second hinge shaft 42 relative to the guide portion 50 are specifically as follows:

[0148] In the following description, Indicates the opening angle of the door 30. The opening angle when the door 30 is closed The opening angle of the door 30 when it is opened relative to the box body 10 to open the access opening is a positive number;

[0149] like Figure 5 and Figure 15 As shown, The guide center axis P is located at the starting guide point P0 of the guide trajectory line S, the guide center axis Q is located at the starting guide point Q0 of the guide trajectory line S, and the center point I of the axis is located at the starting midpoint I0 relative to the door body 30 (guide portion 50).

[0150] like Figure 6 and Figure 16 As shown, During the above opening process, the guide center axis P moves along the guide track line S to the direction close to the door side wall 32 and the door rear wall 33, and the guide center axis Q moves along the guide track line S to the direction close to the door side wall 31 and the door rear wall 33. That is, the door body 30 opens at an angle of When the guide center axis P and the guide center axis Q maintain the same movement trend, both move along the guide trajectory line S toward the direction close to the door side wall 31 and the door rear wall 33.

[0151] like Figure 6 and Figure 16 As shown, When the door body 30 rotates and opens to G1, the guide center axis P is located at the first guide point P1 of the guide trajectory line S (the point where the guide trajectory line S is the smallest distance from the door rear wall 33), and the first guide point P1 is located on the side of the starting guide point P0 close to the door side wall 33 and the door rear wall 33; 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 close to the door side wall 32 and the door rear wall 33; the axis center point I moves along the axis line segment PQ to the first midpoint I1, and the first midpoint I1 is located on the side of the starting midpoint I0 close to the door side wall 32 and the door rear wall 33. G1 can be set to any value between [μ15°, 25°].

[0152] like Figure 7 and Figure 17 As shown, During the above opening process, the guide center axis P moves in an arc along the guide track line S toward the door side wall 32 and away from the door rear wall 33, and the guide center axis Q moves in an arc along the guide track line S toward the door side wall 31 and the door rear wall 33. That is, the door body 30 opens at an angle of When the guide center axis P and the guide center axis Q have different movement trends, the guide center axis P moves away from the door rear wall 33 while the guide center axis Q moves toward the door rear wall 33.

[0153] Above, the door body 30 opens at an angle of The movement trend of the opening angle interval remains consistent; the only difference is that the opening angle is different, 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. When any one of the opening angles is selected, it can represent the relative positions of the first hinge axis 41 and the guide portion 50, and the second hinge axis 42 and the guide portion 50 when the door body 30 is opened to the angle range; specifically, Figure 7 and Figure 17 As shown, It represents the position within the opening angle range for comparison with when the door body 30 is opened to other states.

[0154] like Figure 7 and Figure 17 As shown, , the door body 30 rotates and opens to G2; the guide center axis P is located at the second guide point P2 of 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 at the first guide point P1 on the side 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 of the guide trajectory line S, and the second guide point Q2 is located on the side of the first guide point Q1 close to the door side wall 32 and the door rear wall 33; the axis center point I moves to the second midpoint I2 along the axis line segment PQ, and the second midpoint I2 is located on the side of the first midpoint I1 close to the door side wall 32 and the door rear wall 33; G2∈μ can be set to any value among 44°, 48°].

[0155] like Figure 8 and Figure 18 As shown, , the door body 30 rotates and opens to G3; the guide center axis P is located at the third guide point P3 of the guide trajectory line S, and the third guide point P3 is located on the side of the second guide point P2 close to the door 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 (that is, the first guide point P1-the point with the smallest distance between the guide trajectory line S and the door rear wall 33), and the third guide point Q3 is located on the side of the second guide point Q2 close to the door side wall 32 and the door rear wall 33; the axis center point I moves to the third midpoint I3 along the axis line segment PQ, and the third midpoint I3 is located on the side of the second midpoint I2 close to the door side wall 32 and away from the door rear wall 33; G3∈μ68°, 72°] can be set.

[0156] like Figures 8-11 As shown, During the above opening process, the guide center axis P moves along the guide track line S in a circular motion toward the door side wall 32 and away from the door rear wall 33, and the guide center axis Q moves along the guide track line S in a circular motion toward the door side wall 31 and away from the door rear wall 33. That is, the door body 30 opens at an angle of When the guide center axis P and the guide center axis Q have the same movement trend, the guide center axis P and the guide center axis Q simultaneously make circular motions toward the door side wall 32 and away from the door rear wall 33.

[0157] Above, the door body 30 opens at an angle of The movement trend of the opening angle interval remains consistent; the only difference is that the opening angle is different, 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. When any one of the opening angles is selected, it can represent the relative positions of the first hinge axis 41 and the guide portion 50, and the second hinge axis 42 and the guide portion 50 when the door body 30 is opened to the corresponding interval; specifically, Figure 9 and Figure 10 As shown, or G5 (where G4<G5), representing the position within the opening angle range for comparison with when the door body 30 is opened to other states.

[0158] like Figure 9 and Figure 19 As shown, , the door body 30 rotates and opens to G4; the guide center axis P is located at the fourth guide point P4 of the guide trajectory line S, and the fourth guide point P4 is located on the side of the third guide point Q3 close to the door 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 close to the door side wall 32 and away from the door rear wall 33; the axis center point I moves to the fourth midpoint I4 along the axis line segment PQ, and the fourth midpoint I4 is located on the side of the third midpoint I3 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 body 30 is opened to 90°.

[0159] like Figure 10 and Figure 20 As shown, , the door body 30 rotates and opens to G5; the guiding center axis P is located at the fifth guiding point P5 of the guiding trajectory line S (the point where the straight line with the starting guiding point Q0 is parallel to the door front wall 31 (X axis)), and the fifth guiding point P5 is located on the side of the fourth guiding point P4 close to the door side wall 32 and away from the door rear wall 33; the guiding center axis Q is located at the fifth guiding point Q5 of the guiding trajectory line S, and the fifth guiding point Q5 is located on the side of the fourth guiding point Q4 close to the door side wall 32 and away from the door rear wall 33; the axis center point I moves to the fifth midpoint I5 along the axis line segment PQ, and the fifth midpoint I5 is located on the side of the fourth midpoint I4 close to the door side wall 32 and away from the door rear wall 33. G3∈μ can be set to any value among 98°, 102°]. In some embodiments of the present application, 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, thereby increasing detectability.

[0160] like Figure 11 and Figure 21 As shown, When the door body 30 rotates and opens 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 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 close to the door side wall 32 and away from the door rear wall 33; the axis center point I moves to the sixth midpoint I6 along the axis line segment PQ, and the sixth midpoint I6 is located on the side of the fifth midpoint I5 close to the door side wall 32 and away from the door rear wall 33. G3∈μ can be set to any value between 118° and 122°.

[0161] In summary, when the door body 30 opens from the closed state to G6, the first hinge shaft 41 and the second hinge shaft 42 both make circular motions along the direction of the guide portion 50 close to the door side wall 32 throughout the entire process.

[0162] like Figure 12 and Figure 22 As shown, When the door 30 opens from G6 to G max During the above opening process, the guide center axis P moves in an arc along the guide track line S in the direction away from the door side wall 32 and the door rear wall 33, and the guide center axis Q moves in an arc along the guide track line S in the direction close to the door side wall 31 and away from the door rear wall 33. That is, the door body 30 opens at an angle of When the guide center axis P and the guide center axis Q have different movement trends, the guide center axis P moves away from the door side wall 32 while the guide center axis Q moves toward the door side wall 32.

[0163] Above, the door body 30 opens at an angle of The movement trend of the opening angle interval remains consistent; the only difference is that the opening angle is different, 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. When any one of the opening angles is selected, it can represent the relative positions of the first hinge axis 41 and the guide portion 50, and the second hinge axis 42 and the guide portion 50 when the door body 30 is opened to the corresponding interval; specifically, Figure 12 and Figure 22 As shown, It represents the position within the opening angle range for comparison with when the door body 30 is opened to other states.

[0164] like Figure 12 and Figure 22 As shown, When the door 30 rotates to open to G max The guiding center axis P is located at the seventh guiding point P7 of the guiding trajectory line S, and the seventh guiding point P7 is located on the side of the sixth guiding point P6 away from the door side wall 32 and the door rear wall 33; the guiding center axis Q is located at the seventh guiding point Q7 of the guiding trajectory line S, and the seventh guiding point Q7 is located on the side of the sixth guiding point Q6 close to the door side wall 32 and away from the door rear wall 33; the axis center point I moves to the sixth midpoint I6 along the axis line segment PQ, and the sixth midpoint I6 is located on the side of the fifth midpoint I5 close to the door side wall 32 and away from the door rear wall 33; G can be set max ∈μ134°, 138°].

[0165] Above, the door 30 is opened from G6 to G max During the process, the first hinge shaft 41 makes an arc motion along the guide portion 50 in the direction away from the door side wall 32 and the door rear wall 33, and the second hinge shaft 42 makes an arc motion along the guide trajectory line S in the direction close to the door side wall 32 and away from the door rear wall 33.

[0166] In some embodiments of the present application, the door body 30 is opened to the maximum angle G max When the first hinge shaft 41 is located at the end of the guide portion 50 close to the door front wall 31 and the door side wall 32; the second hinge shaft 42 is located at the side of the first hinge shaft 41 away from the door front wall 31.

[0167] As a configurable method, the door body 30 is opened to the maximum angle G max When the top wall of the box body 10 is projected onto the plane where the axis line segment PQ is located, the angle between the axis line segment PQ and the door side wall 32 is less than 5°.

[0168] Above, 0°<G1<G2<G3<G4=90°<G5<G6<G max ; Above G1, G2, G3, G4, G5, G6, G max They are recorded as the first angle, the second angle, the third angle, the fourth angle, the fifth angle, the sixth angle, and the maximum angle in sequence. In addition, it should be noted that the limitation on the range of each angle in the present invention is only a feasible setting method, and is not a limited limitation on each angle. The names of the above angles are only a relative description in this embodiment, and they do not have the meaning of limiting the angle; for example, the "maximum angle" in this embodiment is not applicable to the embodiment in which it is implemented, and it does not limit the maximum angle that the door body can open in all implementation modes to the same as the description in this embodiment.

[0169] In summary, during the opening process of the door body 30 , the second midpoint I2 is the point where the distance between the axis midpoint I and the door rear wall 33 is the smallest during the opening process of the door body 30 .

[0170] In combination with the above situation where the door body 30 is opened to a specific angle, in this embodiment, when the door body 30 is opened to the maximum angle G max During the entire process of the door body 30 opening, the first hinge shaft 41 always moves relative to the guide portion 50 and performs a unidirectional clockwise arc motion along the arc-shaped guide trajectory line S; the second hinge shaft 42 always moves relative to the guide portion 50 and performs a unidirectional clockwise arc motion along the arc-shaped guide trajectory line S; that is, during the entire process of the door body 30 opening, the first hinge shaft 41 and the second hinge shaft 42 both maintain unidirectional movement without reversing direction, so that the force directions of the first hinge shaft 41 and the second hinge shaft 42 during the door body 30 opening process are always consistent, which provides a good door opening and closing feel and improves the user experience; in addition, wear is reduced, ensuring the life of the guide portion 50. Furthermore, during the entire process of the door body 30 opening, the first hinge shaft 41 and the second hinge shaft 42 maintain unidirectional arc motion throughout the entire process, so that there is no acceleration of stopping and moving again during the entire opening process of the door body 30, making the movement of the door body 30 more smooth.

[0171] The door 30 is opened from the closed state to the maximum angle G max When the first hinge axis 41 and the second hinge axis 42 move synchronously relative to the guide trajectory line S, the length of arc P0P7 is equal to the length of arc Q0Q7. The overlapping section of the motion trajectory of the guide center axis P and the guide center axis Q is arc P0Q7; only the arc Q7P7 section of the motion trajectory of the guide center axis P and the arc Q0P0 section of the motion trajectory of the guide center axis Q are unique to each other and there is no overlap. As a configurable method, the length of the arc P0Q7 of the overlapping part of the motion trajectory of the two axes is recorded as Z c, the motion track length of the guide center axis P (guide center axis Q) is recorded as Z, where Z c : Z is any value between 0.5 and 0.9; as described above, in the present invention, during the opening process of the door body 30, the majority of the motion trajectories of the guide center axis P and the guide center axis Q overlap, and the two hinge axes fully utilize the same guide portion 50, resulting in a more compact structure that can meet the requirements of a thin door body 30 (under 30 mm). In addition, in the present invention, the first hinge axis 41 and the second hinge axis 42 are disposed adjacent to each other, and they move under the guidance of the guide portion 50 having the arc-shaped guide trajectory line S. This allows the first hinge axis 41 and the second hinge axis 42 to maintain a more uniform motion consistency, resulting in a more coordinated and smoother motion.

[0172] In some embodiments of the present application, in combination with the position of the first hinge relative to the second hinge when the door body 30 is in the closed state and opened to G2 and G5, within the plane of the top wall of the box, when the door body 30 is closed, the guide center axis Q is located at the starting guide point Q0 of the guide trajectory line S;

[0173] 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 S; wherein, the line segment P5Q0 between the fifth guide point P5 and the starting guide point Q0 is parallel to the door front wall 31;

[0174] The point where the guide track line S is at the greatest distance from the door 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;

[0175] 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, and the guide center axis P is located at the second guide point P2 of the guide trajectory S; wherein, the first straight line K1 perpendicularly bisects the line segment P2Q2. The hinge assembly with the above trajectory characteristics can effectively detect assembly accuracy and processing accuracy through the relationship between the above three positions after the door 30 and the housing 10 are installed. This allows for timely detection of problems and adjustments to achieve high-precision coordination between the second hinge on the door 30 and the first hinge on the housing 10, meeting the complex motion requirements of finely controlling the door 30 to complete rotation and inward movement. In addition, the hinge assembly with the above trajectory characteristics ensures that the line between the maximum distance between the axis center point I and the door front wall 31 and the maximum distance between the guide trajectory S and the door front wall 31 are perpendicular to the door front wall 31. The movement of the guide trajectory S and the axis center point I remain consistent, and the points where their extension trends change also remain synchronized, thereby improving the coordination of the movement of the first hinge axis 41 and the second hinge axis 42 relative to the guide portion 50. As a configurable method, when G2 = γ, the first straight line K1 perpendicularly bisects the line segment P2Q2. It is also detectable, effectively ensuring assembly accuracy to meet the requirements of refined control.

[0176] Combined with the positions of the two limiting shafts (the first hinge shaft 41 and the second hinge shaft 42) relative to the limiting portion (the guide portion 50) when the door body 30 is opened to a specific angle, it can be seen that the matching relationship between the first hinge shaft 41 and the guide portion 50 exists in the following situations:

[0177] When the door body 30 is opened from the closed state to G1, the movement directions of the first hinge shaft 41 and the second hinge shaft 42 are consistent, and both hinge shafts move along the guide portion 50 toward the door side wall 32 and the door rear wall 33;

[0178] During the process of the door body 30 opening from G1 to G3, the first hinge shaft 41 and the second hinge shaft 42 move in different directions; the first hinge shaft 41 moves along the guide portion 50 toward the door side wall 32 and away from the door rear wall 33, and the second hinge shaft 42 moves along the guide portion 50 toward the door side wall 32 and the door rear wall 33;

[0179] During the process of the door body 30 opening from G3 to G6, the movement directions of the first hinge shaft 41 and the second hinge shaft 42 are consistent, and both hinge shafts move along the guide portion 50 toward the door side wall 32 and away from the door rear wall 33;

[0180] Door 30 opens from G6 to G max During the process, the movement directions of the first hinge shaft 41 and the second hinge shaft 42 are different; the first hinge shaft 41 moves along the guide portion 50 in the direction away from the door side wall 32 and the door rear wall 33, and the second hinge shaft 42 moves along the guide portion 50 in the direction close to the door side wall 32 and away from the door rear wall 33.

[0181] Combine Figure 5-Figure 22 The following describes the relative movement of the two stages from the perspective of the matching relationship between the first hinge shaft 41 and the guide portion 50, and the second hinge shaft 42 and the guide portion 50:

[0182] (1) The first stage, combining Figure 5-Figure 6 , Figure 14-16 As shown, the door body 30 rotates from the closed state to open to G1.

[0183] During this first stage, the door body 30 opens from 0° to G1. During this process, the guide center axis P moves in an arc of radius r from the starting guide point P0 along the arc-shaped guide trajectory S toward the door sidewalls 32 and the door rear wall 33. The guide center axis Q also moves in an arc of radius r from the starting guide point Q0 along the guide trajectory S toward the door sidewalls 32 and the door rear wall 33. Therefore, during the process of the door body 30 opening from the closed state to the first angle G1, both the first hinge axis 41 and the second hinge axis 42 move away from the door front wall 31 relative to the door body 30.

[0184] Specifically, the guiding center axis P moves from the starting guiding point P0 along the guiding trajectory line S to the first guiding point P1; the guiding center axis Q moves from the starting guiding point Q0 along the guiding trajectory line S to the first guiding point Q1.

[0185] During the first stage of opening, with the second hinge (guide 50) as a reference, as the door 30 opens from 0° to G1, the axis segment PQ rotates clockwise from P0Q0 and moves closer to the door sidewalls 32 and rear wall 33 to P1Q1; that is, the movement trend of the axis segment PQ is P0Q0 → P1Q1. Simultaneously, the axis midpoint I moves in a direction I0 → I1 as the axis segment PQ moves; that is, as the door 30 opens, the axis midpoint I moves closer to the door sidewalls 32 and rear wall 33 relative to the door 30.

[0186] In summary, when the door body 30 opens from the closed state to G1, with the door body 30 (the second hinge) as a reference, the box body 10 has a displacement in a direction parallel to the door rear wall 33 and toward the door side wall 32 relative to the door body 30, and a displacement in a direction parallel to the door side wall 32 and toward one side of the door rear wall 33. That is, the movement displacement of the box body 10 relative to the door body 30 is decomposed into a displacement in a direction parallel to the door rear wall 33 and toward the door side wall 32, and a displacement in a direction parallel to the door side wall 32 and toward the door rear wall 33.

[0187] According to the relativity of motion, with the box body 10 as a reference, when the door body 30 is opened from the closed state to G1, the door body 30 has a displacement along the direction parallel to the door rear wall 33 and pointing away from its door side wall 32 relative to the box body 10, and a displacement along the direction parallel to the door side wall 32 and pointing away from its door rear wall 33. That is, relative to the box body 10, the displacement of the door body 30 is decomposed into a displacement along the direction parallel to the door rear wall 33 away from the door side wall 32 and a displacement along the direction parallel to the door side wall 32 away from the door rear wall 33. Among them, for the convenience of explaining the displacement, in the decomposition of the displacement of the door body 30 relative to the box body 10, the displacement of the door body 30 along the direction parallel to the door rear wall 33 is recorded as the first direction displacement. The displacement in the direction parallel to the door side wall 32 is recorded as the second direction displacement In the opening process of the first stage, the first direction displacement Pointing away from the door side wall 32; second direction displacement Away from the door rear wall 33 direction.

[0188] (2) The second stage, combining Figure 6-Figure 8 , Figure 14 and Figure 16-Figure 18 As shown, the door body 30 rotates and opens from G1 to G3.

[0189] During this second phase, the door 30 opens from angle G1 to angle G3. During this process, the guide axis P moves from the first guide point P1 along the arc-shaped guide trajectory S, toward the door sidewalls 32 and away from the door rear wall 33, in an arc of radius r. The guide axis Q also moves from the first guide point Q1 along the guide trajectory S, toward the door sidewalls 32 and the door rear wall 33, in an arc of radius r. That is, as the door 30 opens from the first angle G1 to the third angle G3, the first hinge axis 41 moves toward the door front wall 31, while the second hinge axis 42 moves away from the door front wall 31, relative to the door 30.

[0190] Specifically, the guiding center axis P moves from the first guiding point P1 along the guiding trajectory line S through the second guiding point P2 to the third guiding point P3; the guiding center axis Q moves from the first guiding point Q1 along the guiding trajectory line S through the second guiding point Q2 to the third guiding point Q3.

[0191] During the above second stage of opening, with the second hinge (guide part 50) as a reference, when the door body 30 opens from G1 to G3, the axial line segment PQ rotates clockwise from P1Q1 and first moves toward the direction close to the door side wall 32 and the door rear wall 33 to P2Q2, and then moves toward the direction close to the door side wall 32 and away from the door rear wall 33 to P3Q3; during this process, the axial line segment PQ moves from P1Q1 through P2Q2 to P3Q3; that is, the movement trend of the axial line segment PQ is P1Q1→P2Q2→P3Q3. At the same time, the movement trend of the axial center point I as the axial line segment PQ moves is I1→I2→I3; that is, during the opening process of the door body 30, relative to the door body 30, the axial center point I first moves toward the direction close to the door side wall 32 and the door rear wall 33, and then moves toward the direction close to the door side wall 32 and away from the door rear wall 33; among them, when the door body 30 is opened to G2, the axial line segment PQ is parallel to the door front wall 31, and the distance between the axial center point I and the door rear wall 32 is the smallest.

[0192] In summary, the movement trend of the axis center point I of the door body 30 during the process of opening from G1 to G2 is consistent with the movement trend of the axis center point I of the door body 30 during the process of opening from the closed state to G1, and both move toward the direction close to the door side wall 32 and the door rear wall 33.

[0193] Combined with the analysis of the movement displacement of the door body 30 relative to the box body 10 during the opening process of the door body 30 in the first stage, it can be obtained by the same logic: in the process of the door body 30 opening from G1 to G2, relative to the box body 10, the door body 30 has a first direction displacement parallel to the door rear wall 33 and pointing to the side away from the door side wall 32. Displacement in a second direction parallel to the door side wall 32 and pointing away from the door rear wall 33 As described above, since the displacement of the door body 30 during the process of opening from G1 to G2 is the same as that in the first stage, it will not be described in detail here.

[0194] Combined with the movement displacement of the door body 30 relative to the box body during the opening process of the door body 30 in the first stage, the relative movement of the door body 30 and the box body 10 during the process of the door body 30 opening from G2 to G3 is described;

[0195] Through the movement of the second stage described above, when the door body 30 opens from G2 to G3, with the door body 30 (the second hinge) as a reference, the box body 10 has a displacement in a direction parallel to the door rear wall 33 and pointing toward the door side wall 32, and a displacement in a direction parallel to the door side wall 32 and pointing away from the door rear wall 33. In other words, the movement displacement of the box body 10 relative to the door body 30 is decomposed into a displacement in a direction parallel to the door rear wall 33 and pointing toward the door side wall 32, and a displacement in a direction parallel to the door side wall 32 and pointing away from the door rear wall 33.

[0196] According to the relativity of motion, with the box body 10 as a reference, during the process of the door body 30 opening from G2 to G3, the door body 30 has a displacement along the direction parallel to the door rear wall 33 and pointing away from its door side wall 32 and a displacement along the direction parallel to the door side wall 32 and pointing towards its door rear wall 33 relative to the box body 10. That is, relative to the box body 10, the displacement of the door body 30 is decomposed into a displacement along the direction parallel to the door rear wall 33 and pointing away from the door side wall 32 and a displacement along the direction parallel to the door side wall 32 and pointing towards the door rear wall 33. That is, relative to the box body 10, in the displacement decomposition of the door body 30, the door body 30 has a first direction displacement along the direction parallel to the door rear wall 33 and pointing away from the door side wall 32 Displacement in a second direction parallel to the door side wall 32 and pointing to the door rear wall 33

[0197] (3) The third stage, combining Figures 8-11 , Figure 14 and Figures 18-21 As shown, the door body 30 rotates and opens from G3 to G6.

[0198] During this third stage, the door 30 opens from angle G3 to angle G6. During this process, the guide axis P moves from the third guide point P3 along the arc-shaped guide trajectory S, toward the door sidewall 32 and away from the door rear wall 33, in an arc-shaped arc with a radius of r. The guide axis Q also moves from the third guide point Q3 along the guide trajectory S, toward the door sidewall 32 and away from the door rear wall 33, in an arc-shaped arc with a radius of r. In other words, as the door 30 opens from the third angle G3 to the sixth angle G6, the first hinge axis 41 and the second hinge axis 42 simultaneously move toward the door front wall 31 and the door sidewall 32 relative to the door 30.

[0199] Specifically, the guide center axis P moves from the third guide point P3 along the guide trajectory line S 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 through the fourth guide point Q4 and the fifth guide point Q5 to the sixth guide point Q6.

[0200] During the third stage of opening, with the second hinge (guide portion 50) as a reference, as the door 30 opens from G3 to G6, the axis line segment PQ rotates clockwise from P3Q3, moving toward the door sidewall 32 and away from the door rear wall 33 to positions P4Q4, P5Q5, and P6Q6, respectively. This means that the axis line segment PQ moves in the following order: P3Q3 → P4Q4 → P5Q5 → P6Q6. Simultaneously, the axis center point I moves in the following order: I3 → I4 → I5 → I6, as the door 30 opens. This means that relative to the door 30, the axis center point I moves toward the door sidewall 32 and away from the door rear wall 33.

[0201] In summary, during the process of the door body 30 opening from G3 to G6, with the door body 30 (the second hinge) as a reference, the box body 10 has a displacement relative to the door body 30, which is parallel to the door rear wall 33 and directed toward the door side wall 32, and a displacement parallel to the door side wall 32 and directed away from the door rear wall 33. In other words, the movement displacement of the box body 10 relative to the door body 30 is decomposed into a displacement parallel to the door rear wall 33 and directed toward the door side wall 32, and a displacement parallel to the door side wall 32 and directed away from the door rear wall 33.

[0202] According to the relativity of motion, with the box body 10 as a reference, during the process of the door body 30 opening from G3 to G6, the door body 30 has a displacement along the direction parallel to the door rear wall 33 and pointing away from its door side wall 32 relative to the box body 10, and a displacement along the direction parallel to the door side wall 32 and pointing towards its door rear wall 33. That is, relative to the box body 10, the displacement of the door body 30 is decomposed into a displacement along the direction parallel to the door rear wall 33 and pointing away from the door side wall 32, and a displacement along the direction parallel to the door side wall 32 and pointing towards the door rear wall 33. That is, relative to the box body 10, in the displacement decomposition of the door body 30, the door body 30 has a first direction displacement along the direction parallel to the door rear wall 33 and pointing away from the door side wall 32. Displacement in a second direction parallel to the door side wall 32 and pointing to the door rear wall 33

[0203] (4) The fourth stage, combining Figure 11-12 ,like Figure 14 and Figure 21-22 As shown, the door body 30 is rotated from G6 to G max process.

[0204] Door 30 opens from G6 to Gmax During the opening process, the guide center axis P moves in a circular 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 a circular 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.

[0205] 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.

[0206] In the fourth stage of opening, the door 30 is opened from G6 to G7 with the second hinge (guide portion 50) as a reference. max During this process, axis segment PQ rotates clockwise from position P6Q6, moving away from the door sidewalls 32 and rear wall 33, to position P7Q7. This means that the axis segment PQ moves from position P6Q6 to position P7Q7. Simultaneously, axis midpoint I moves from position I6 to position I7 as axis segment PQ moves. This means that during the opening of door body 30, axis midpoint I moves toward the door sidewalls 32 and away from the door rear wall 33 relative to the door body 30.

[0207] In summary, the door 30 is opened from G6 to G max During the process, with the door body 30 (second hinge) as a reference, the box body 10 has a displacement in a direction parallel to the door rear wall 33 and toward the door side wall 32 relative to the door body 30, and a displacement in a direction parallel to the door side wall 32 and toward the side away from the door rear wall 33. That is, the movement displacement of the box body 10 relative to the door body 30 is decomposed into a displacement in a direction parallel to the door rear wall 33 and toward the door side wall 32, and a displacement in a direction parallel to the door side wall 32 and toward the side away from the door rear wall 33.

[0208] According to the relativity of movement, with the box 10 as a reference, the door 30 opens from G6 to G max During the process, the door body 30 has a displacement in a direction parallel to the door rear wall 33 and pointing to the side away from the door side wall 32 relative to the box body 10, and a displacement in a direction parallel to the door side wall 32 and pointing to the door rear wall 33; that is, relative to the box body 10, the displacement of the door body 30 is decomposed into a displacement in a direction parallel to the door rear wall 33 and pointing to the side away from the door side wall 32, and a displacement in a direction parallel to the door side wall 32 and pointing to the door rear wall 33. That is, relative to the box body 10, in the displacement decomposition of the door body 30, the door body 30 has a first direction displacement in a direction parallel to the door rear wall 33 and pointing to the side away from the door side wall 32 Displacement in a second direction parallel to the door side wall 32 and pointing to the door rear wall 33

[0209] It should be noted that “the direction pointing toward the door sidewall 32 ” refers to the direction from the end of the door body 30 opposite to the door sidewall 32 toward the door sidewall 32 ; and “the direction pointing toward the side away from the door sidewall 32 ” refers to the direction from the door sidewall 32 toward the end of the door body 30 opposite to the door sidewall 32 .

[0210] “The direction pointing to the door rear wall 33 ” refers to the direction from the door front wall 31 to the door rear wall 33 ; “the direction pointing to the side away from the door rear wall 33 ” refers to the direction from the door rear wall 33 to the door front wall 31 .

[0211] Combined with the movement of the door body 30 from the first stage to the fourth stage, relative to the box body 10, the door body 30 is opened from the closed state to the G max During the process, the door body 30 has a first direction displacement parallel to the door rear wall 33 The second direction displacement parallel to the door side wall 32 At different opening stages of the door body 30, the first direction displacement and the second direction displacement Specifically, as a configurable method, during the opening process of the door body 30, the first direction displacement The direction remains unchanged, while the second direction shifts There are two situations in which the direction of the displacement is away from the door rear wall 33 and toward the door rear wall 33. Second direction displacement All are instantaneous relative displacements to illustrate the current movement direction relative to the box body 10 and the door body 30.

[0212] Specifically, when the door body 30 is opened from the closed state to G2 (<90°), relative to the box body 10, the door body 30 has a first direction displacement parallel to the door rear wall 33 and pointing away from the door side wall 32. Displacement in a second direction parallel to the door side wall 32 and pointing away from the door rear wall 33

[0213] Door 30 opens from G2 to G max During the process of (>90°), relative to the box body 10, the door body 30 is displaced in the first direction parallel to the door rear wall 33 and pointing away from the door side wall 32. Displacement in a second direction parallel to the door side wall 32 and pointing toward the door rear wall 33

[0214] See also Figure 23-Figure 27As shown; in the plane where the top wall of the box body 10 is located, on the side of the box body 10 close to the door body 30, a displacement coordinate system AOB is established; specifically, in the displacement coordinate system AOB, OB is perpendicular to the plane where the take-in and put-out port is located, and B is located on the side of O away from the take-in and put-out port (front side); OA is parallel to the plane where the take-in and put-out port is located, and A is located on the side of O away from the second body side wall (outside). That is, in the displacement coordinate system AOB, the direction from the second body side wall to the first body side wall is positive, and the direction from the take-in and put-out port to the door front wall 31 when the door body 30 is closed (from back to front) is positive. It should be noted that during the opening process of the door body 30, the displacement coordinate system AOB remains stationary relative to the box body 10, and it does not move with the opening of the door body 30.

[0215] (1) Figure 5-Figure 9 As shown, during the process of the door body 30 opening from the closed position to 90 degrees, as the door body 30 rotates counterclockwise relative to the box body 10, the door side walls 32, door rear wall 33, and door front wall 31 also rotate counterclockwise during this stage of the opening process. Within the plane of the top wall of the box body 10, the door side walls 32 extend outward and forward along the direction from the second side edge N to the first side edge W (the door rear wall 33 to the door front wall 31); and the door rear wall 33 extends inward and forward along the direction from the door side walls 32 to the end of the door body 30 opposite the door side walls 32.

[0216] During the above opening process (opening from the closed state to 90°), the door side wall 32 starts to rotate counterclockwise from the state parallel to the reference plane M0, and the angle between the door side wall 32 and the plane where the access port is located gradually decreases, and the angle between the door side wall 32 and the reference plane M0 gradually increases; that is, in the process of the door body 30 opening from the closed state to 90°, relative to the box body 10, along the direction from the second side edge N to the first side edge W, the door side wall 32 extends to the side away from the second body side wall and the access port. At the same time, the angle between the door rear wall 33 and the plane where the access port is located gradually increases, and the angle between the door rear wall 33 and the reference plane M0 gradually decreases; that is, in the process of the door body 30 opening from the closed state to 90°, relative to the box body 10, along the direction from the door side wall 32 to the end of the door body 30 opposite to the door side wall 32, the door rear wall 33 extends in the direction away from the first body side wall and the access port.

[0217] (1.1) Combined with the description of the displacement direction of the door body 30 relative to the box body 10 during the process of the door body 30 opening from the closed state to G2 (G2 < 90°), it can be seen that: during the process of the door body 30 opening from the closed state to 90°, with the box body 10 as a reference, the first direction of the displacement of the door body 30 parallel to the door rear wall 33 Pointing to the direction away from the door side wall 32, that is, the first direction displacement Pointing to the inner front side of the box body 10 (inward and forward side); the door body 30 is parallel to the second direction displacement of the door side wall 32 Pointing to the direction away from the door rear wall 33, that is, the second direction displacement It points to the outer front side of the box body 10 (the side facing outward and forward).

[0218] like Figure 23-24 As shown, in the displacement coordinate system AOB, when the door body 30 is opened from the closed state to G2, the first direction displacement of the door body 30 is Located in the second quadrant (A<0, B>0), displacement in the second direction Located in the first quadrant (A>0, B>0). Displacement in the first direction and the second direction displacement Displacement decomposition is performed on the A axis and the B axis respectively; displacement in the first direction The displacement on the A axis is <0, the displacement on the B axis is >0; displacement in the second direction The displacement on the A axis is The displacement on the B axis is Among them, the trajectory feature setting of the present invention has Then there is, That is, when the door 30 opens from the closed state to G2, in the displacement coordinate system AOB, the door 30 has a first displacement and the second displacement It can be concluded from this that: relative to the box body 10, the door body 30 has a tendency to move in the negative direction along the A axis and in the positive direction toward the B axis, that is, the door body 30 has a tendency to move inward and forward; that is, in the process of the door body 30 being opened from the closed state to G2 (G2<90°), the door body 30 has a tendency to move inward and forward relative to the box body 10.

[0219] (1.2) Combined with the above description of the displacement direction of the door body 30 relative to the box body 10 during the process of the door body 30 opening from G2 (G2 < 90°) to G4 = 90°, it can be concluded that in the process of the door body 30 opening from G2 to 90°, with the box body 10 as a reference, the first direction displacement of the door body 30 parallel to the door rear wall 33 Pointing to the direction away from the door side wall 32, that is, the first direction displacement Pointing to the inner front side of the box body 10 (inward and forward side); the door body 30 is parallel to the second direction displacement of the door side wall 32 Pointing to the door rear wall 33 (from the door front wall 31 to the door rear wall 33), that is, the second direction displacement It points to the inner rear side of the box body 10 (inward and rearward side).

[0220] like Figure 23 and Figure 25As shown, in the displacement coordinate system AOB, when the door body 30 is opened from G2 (G2 < 90°) to 90°, the first direction displacement of the door body 30 is Located in the second quadrant (A<0, B>0), displacement in the second direction Located in the third quadrant (A<0, B<0). Displacement in the first direction and the second direction displacement Displacement decomposition is performed on the A axis and the B axis respectively; displacement in the first direction The displacement on the A axis is The displacement on the B axis is Second direction displacement The displacement on the A axis is The displacement on the B axis is Among them, the trajectory feature setting of the present invention has Then there is, That is, when the door body 30 is opened from the closed state to 90 degrees, in the displacement coordinate system AOB, the door body 30 has a first partial displacement and the second displacement It can be concluded from this that: relative to the box body 10, the door body 30 has a tendency to move along the negative direction of the A axis and move toward the positive direction of the B axis, that is, the door body 30 has a tendency to move inward and forward; that is, in the process of the door body 30 opening from G2 (G2<90°) to 90°, the door body 30 has a tendency to move inward and forward relative to the box body 10.

[0221] (2) Figure 9 As shown, when the door 30 is opened to 90°, the door sidewall 33 is parallel to the plane of the access opening and perpendicular to the reference plane M0. At this time, the door rear wall 33 is parallel to the reference plane M0 and perpendicular to the plane of the access opening. 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 sidewall 32 extends from the inside to the outside.

[0222] Combined with the description of the displacement direction of the door body 30 relative to the box body 10 during the opening process of the door body 30 from the first stage to the fourth stage, it can be concluded that when the door body 30 is opened to 90 degrees, with the box body 10 as a reference, the door body 30 is displaced in the first direction parallel to the door rear wall 33. Pointing to the direction away from the door side wall 32, that is, the first direction displacement Pointing to the front side of the box 10; the door body 30 is parallel to the second direction displacement of the door side wall 32 Pointing to the door rear wall 33 (from the door front wall 31 to the door rear wall 33), that is, the second direction displacement Pointing to the inside of the box 10.

[0223] like Figure 26As shown, in the displacement coordinate system AOB, the first direction displacement of the door body 30 is Along the B axis and pointing to the positive direction of the B axis, the second direction displacement Along the A axis and pointing to the negative direction of the A axis. Displacement in the first direction The displacement on the A axis is The displacement on the B axis is Second direction displacement The displacement on the A axis is The displacement on the B axis is in, That is, when the door body 30 is opened to 90°, in the displacement coordinate system AOB, the door body 30 has a first partial displacement and the second displacement It can be concluded from this that: relative to the box body 10, the door body 30 has a tendency to move in the negative direction along the A axis and in the positive direction toward the B axis, that is, the door body 30 has a tendency to move inward and forward; that is, when the door body 30 is opened to 90°, the door body 30 has a tendency to move inward and forward relative to the box body 10.

[0224] (3) Figures 9-12 As shown, when the door body 30 is rotated 90 degrees to open to G max During the process of opening, as the door body 30 rotates counterclockwise relative to the box body 10, the door sidewall 32 also rotates counterclockwise during this stage of the opening process. Within the plane of the top wall of the box body 10, the door sidewall 32 extends outward and rearward along the direction from the second side edge N to the first side edge W; and the door rear wall 33 extends outward and forward along the direction from the door sidewall 32 to the end of the door body 30 opposite the door sidewall 32.

[0225] In the above opening process, the door side wall 32 starts to rotate counterclockwise from a state perpendicular to the reference plane M0, and the angle between the door side wall 32 and the plane where the access port is located gradually increases and the angle between the door side wall 32 and the reference plane M0 gradually decreases; that is, when the door body 30 rotates from 90° to G max During the process, relative to the box body 10, along the direction from the second side edge N to the first side edge W, the door side wall 32 extends away from the second body side wall and closer to the access opening. At the same time, the angle between the door rear wall 33 and the plane where the access opening is located gradually decreases, and the angle between it and the reference plane M0 gradually increases; that is, when the door body 30 is rotated from 90 degrees to G max During the opening and closing process, relative to the box body 10, the door rear wall 33 extends in a direction away from the second body side wall and the access opening along the direction from the door side wall 32 to the end of the door body 30 opposite to the door side wall 32.

[0226] In this embodiment, G2<G4=90°; combined with the first direction displacement in the previous first to fourth stage analysis and the second direction displacement The following is the description of the door body 30 opening from 90° to G max From the above, it can be seen that when the door 30 is opened from 90° to G max During the process (90°<G5), with the box body 10 as a reference, the door body 30 and the door rear wall 33 are displaced in a first direction parallel to each other. Pointing to the direction away from the door side wall 32, that is, the first direction displacement Pointing to the outer front side of the box body 10 (outward and forward side); the door body 30 is displaced in a second direction parallel to the door side wall 32 Pointing to the door rear wall 33, i.e. the second direction displacement It points to the inner front side of the box body 10 (the side facing inward and forward).

[0227] like Figure 27 As shown, in the displacement coordinate system AOB, the door body 30 is opened from 90° to G max During the process, the first direction displacement of the door body 30 Located in the first quadrant (A>0, B>0), displacement in the second direction Located in the second quadrant (A<0,B>0). Displacement in the first direction and the second direction displacement Displacement decomposition is performed on the A axis and the B axis respectively; displacement in the first direction The displacement on the A axis is The displacement on the B axis is Second direction displacement The displacement on the A axis is The displacement on the B axis is Among them, the trajectory feature setting of the present invention has Then there is, That is, in the displacement coordinate system AOB, the door body 30 has a first displacement and the second displacement It can be concluded that relative to the box body 10, the door body 30 has a tendency to move along the negative direction of the A axis and move toward the positive direction of the B axis, that is, the door body 30 has a tendency to move inward and forward; that is, the door body 30 opens from 90° to G max During the opening and closing process, the door body 30 has a tendency to move inward and forward relative to the box body 10.

[0228] In summary, the door 30 is opened from the closed state to the G max During the whole process, the door body 30 keeps moving inward and forward relative to the box body 10.

[0229] In addition, it should be noted that under the trajectory characteristics of the present invention, when the door body 30 is opened from the closed state to 90 degrees and from 90 degrees to the maximum angle G max During the process, the first direction displacement and the second direction displacement The relative relationship of the modules will change with the opening angle of the door body 30, but it does not affect the relative relationship of the displacements in the displacement coordinate system AOB in the above stages, and thus does not affect the movement trend of the door body 30 under the trajectory characteristics of the present invention.

[0230] It should be noted that in this embodiment, only some angles in the range of 0 to 90 degrees, 90 degrees, 90 degrees to G max Some angles within the range are used as representatives to illustrate the overall movement trend, but they can represent the movement trend within the corresponding range, and can illustrate that the hinge assembly with the above trajectory characteristics of the present invention can enable the door body 30 to move inward and forward during the entire opening process; to effectively compensate for the outward displacement of the first side edge W caused by the simple rotation of the door body 30, and limit the distance of the first side edge W beyond the reference plane M0 to no more than μ, effectively avoiding the door body 30 from interfering with the cabinet 100 when it is opened, further reducing the restrictions 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 body 30 opens and moves inward while moving forward a certain distance, so that the door body 30 quickly moves away from the cabinet body to avoid squeezing the door seal 20. In addition, in the present invention, the door body 30 maintains inward movement throughout the opening process, which can reduce the restrictions of the cabinet 100 on the maximum angle that the door body 30 can open, thereby making the maximum angle that the door body 30 can open larger. Similarly, the forward movement of the door body 30 during the opening process can also reduce the limitation imposed by the cabinet 100 on the maximum opening angle of the door body 30, thereby increasing the maximum opening angle of the door body 30. The present invention can also provide that the door body 30 moves forward while moving inward during the opening process, which more effectively reduces the limitation imposed by the cabinet 100 on the maximum opening angle of the door body 30, so that the maximum opening angle of the door body 30 is not limited by the cabinet 100 when the above trajectory feature is set.

[0231] Combined with the movement of the door body 30 during the opening process, the door body 30 is opened from the closed state to the G max Throughout the entire process, the door body 30 rotates around a dynamically changing point (movement trend of the axis center point I: I0→I1→I2→I3→I4→I5→I6→I7) that moves relative to the door body 30 toward the door side wall 32. The axis center point I first moves toward the door side wall 32 and the door rear wall 33, and then moves toward the door side wall 32 and away from the door rear wall 33, thereby causing the door body 30 to move outward and forward relative to the box body 10. When the door body 30 is opened to G2, the distance between the axis center point I and the door rear wall 33 is the smallest.

[0232] 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 body 10, during the opening process of the door body 30, the center point I of the axis moves along the arc, and the circular trajectory formed by it is concentric with the guide trajectory line S.

[0233] In some embodiments of the present application, a trajectory line can be set (such as increasing the length of the guide trajectory line S near the end of the door side wall 32) so that during the opening process of the door body 30, the movement trend of the center point I of the axis relative to the door body 30 is to first move toward the direction close to the door side wall 32 and the door rear wall 33, then move toward the direction close to the door side wall 32 and away from the door rear wall 33, and then move away from the door side wall 32 and the door rear wall 33.

[0234] In combination with the above-mentioned description of the opening process of the door body 30, next, the position of the door body 30 rotating from the previous state around the midpoint of the axial line segment PQ relative to the door body 30 to the adjacent subsequent state (angle) is compared with the position of the door body 30 in the above-mentioned adjacent subsequent state in the present invention to illustrate the movement trend of the door body 30 relative to its previous state during the opening process.

[0235] Combine Figures 28-34 As shown, it is assumed that the door body 30 rotates around the axis center point I of the previous state to the position of the adjacent next state (the door body 30 is represented by a dotted line). During this movement, the rotation center of the door body 30 is fixed relative to the door body 30. Then, under this movement trend, when the door body 30 is opened, the first side edge W is located at W' relative to the box body 10; the second side edge N is located at N' relative to the box body 10; and the side sealing edge F is located at F' relative to the box body 10. Figure 28 In the figure, the position of the door body 30 indicated by the dotted line is the position reached when the door body 30 is simply rotated to G1 around the midpoint I (I0) of the axis line segment PQ of the door body 30 when the door body 30 is closed; the position of the door body 30 indicated by the solid line is the position reached when the door body 30 is rotated open to G1 in the manner of the present invention; Figure 29 In the figure, the position of the door body 30 indicated by the dotted line is the position reached when the door body 30 is opened to G1 by the rotation method of the present invention and then simply rotated to G2 with the door body 30 at G1 relative to the axis center point I (the axis center point I (I1) of the previous state) as the center; the position of the door body 30 indicated by the solid line is the position reached when the door body 30 is rotated to G2 by the setting method of the present invention; similarly Figure 30-Figure 34 Schematic diagram for comparing the positions of the two different opening methods described above at different opening angles.

[0236] Comparing the arrangement of the present invention (the door body 30 rotates around a point that maintains dynamic changes relative to the door body 30 throughout the entire process) with the simple rotation of the door body 30 around the center point I of the axis in its previous state, it can be seen that:

[0237] The door 30 opens from the closed state to G max During the process, in this application, the first side edge position W is located at the side of W' close to the second body side wall and away from the access opening; the second side edge position N is located at the side of N' close to the second body side wall and away from the access opening; the side sealing edge position F is located at the side of F' close to the second body side wall and away from the access opening. That is, the door body 30 is opened from the closed state to the G max During the process, the door body 30 has a tendency to move inward and forward. It should be noted that the comparison between the position of the door body 30 in the current state of the present invention and the position of the door body 30 when it is assumed to be simply rotated around the axis center point I from the previous state of the present invention to the opening angle of the door body 30 of the present invention is representative, and can represent the movement trend of the door body 30 relative to the previous state during the opening process of the door body 30 of the present invention. Only selected angles are used for comparison and illustration to illustrate the movement trend of the door body 30 when it is opened.

[0238] In some embodiments of the present application, the arrangement of the hinge assembly having the above trajectory characteristics enables the door body 30 to move in the second direction during the process of opening from the closed state to 90 degrees. The transition from the first quadrant of the displacement coordinate system AOB to its third quadrant further increases the speed of the door body 30 in moving inward from G2 to 90°, and can compensate for the outward displacement of the first side edge W caused by simple rotation more quickly and more, so as to effectively avoid interference between the first side edge W and the cabinet 100 during the opening process of the door body 30.

[0239] In addition, with the setting of the hinge assembly having the above trajectory characteristics, the door body 30 is displaced in the second direction during the process of opening from the closed state to G2. Located in the first quadrant of the displacement coordinate system AOB, the first direction displacement Located in the second quadrant of the displacement coordinate system AOB, it effectively ensures the positive displacement of the door body 30 along the B axis when it is opened, so that the door body 30 can move forward quickly when it is opened, effectively avoiding squeezing the door seal 20.

[0240] It should be noted that the movement of the first hinge shaft 41 and the second hinge shaft 42 relative to the guide part 50 can achieve the purpose of inward movement of the door body 30 in each stage; the length of the guide trajectory line S mentioned above is not limited to all the above stages; it can be set to have at least one stage movement characteristic.

[0241] In some embodiments of the present application, when the door body 30 is in a closed state, in the projection of the plane where the top wall of the box is located, the centroid plane C is located between the guide center axis P and the guide center axis Q, so that the force condition of the door body 30 when it is in a closed state is better, so that the door body 30 can maintain a stable state in the closed state for a long time.

[0242] In some embodiments of the present application, the door body 30 is opened to the maximum angle G max When the box top wall is projected on the plane, the centroid plane C is located between the guide center axis P and the guide center axis Q, so that the door body 30 is in a better stress condition when it is in the closed state, ensuring that the door body 30 is opened to the maximum angle G. max stability.

[0243] It should be noted here that some of the above setting forms, movement stage conditions and displacement relationships during the movement process under arc restrictions are applicable to non-arc guide trajectory lines S, which are applicable to guide lines S with the above trajectory lines extending relative to the X-axis and Y-axis in the XOY coordinate system of the door body 30.

[0244] In some embodiments of the present application, Figure 5-Figure 13 As shown, a first reference plane M1 and a second reference plane M2 are also defined. Figure 13 As shown, the first reference plane M1 is a plane parallel to the base plane M0 and perpendicular to the plane where the access opening is located. The first reference plane M1 is the mid-plane between the first and second body side walls; that is, the first reference plane M1 is parallel to the first body side wall and its distance from the first body side wall is equal to its distance from the second body side wall. The second reference plane M2 is the plane where the access opening of the storage compartment is located. The first and second reference planes M1, M2 do not move with the opening of the door 30 relative to the cabinet 10 and remain stationary relative to the cabinet 10.

[0245] During the opening of the door 30, the first side edge W moves as the door 30 opens, and its motion trajectory is recorded as the first side edge trajectory. In the projection of the top wall of the box 10, during the opening of the door 30, the first side edge W first moves away from the first reference plane M1 and toward the second reference plane M2, and then moves toward the first reference plane M1 and the second reference plane M2.

[0246] As a setting method, in the projection of the top wall of the box body 10, the door body 30 is opened from the closed state to the G max During the process, the first side edge W moves along the arc. That is, in the projection of the top wall of the box body 10, the door body 30 opens from the closed state to the G max During the process, the trajectory formed by the movement of the first side edge W is an arc. The hinge assembly with the above trajectory characteristics can effectively detect the assembly accuracy and processing accuracy through the motion trajectory characteristics of the first side edge W after the door body 30 and the box body 10 are installed together, so that problems can be discovered and adjusted in time to achieve high-precision matching between the second hinge member on the door body 30 and the first hinge member on the box body 10, meeting the complex movement requirements of finely controlling the door body 30 to complete rotation and inward movement.

[0247] As a configurable method, when the distance between the first side edge W and the first reference plane M1 is the largest, the door body 30 is opened to G' 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 line segment PQ moves to the straight line (first straight line K) where the first guide point P1 adjacent to the guide trajectory line S and the door rear wall 33 has the smallest distance and the center O0 of the circle where the guide trajectory line S is located, the distance between the first side edge W and the first reference plane M1 is maximized. The above arrangement can effectively limit the movement trajectory of the first side edge W during the opening process of the door body 30, so that the first side edge W moves to the position with the largest distance from the first reference plane M1 when the opening angle of the door body 30 is relatively small, thereby limiting the outward movement distance of the first side edge W, so as to avoid interference between the first side edge W and the cabinet 100 when the door body 30 is opened. On the other hand, it can also serve as an auxiliary method for assembly and processing accuracy detection.

[0248] During the opening of the door 30, the second side edge N moves as the door 30 opens, and its motion trajectory is recorded as the second side edge trajectory line. In the projection of the top wall of the box body 10, during the opening of the door 30, the second side edge N first moves toward the first reference plane M1 and the second reference plane M2, then moves toward the first reference plane M1 and away from the second reference plane M2, and finally moves away from the first reference plane M1 and the second reference plane M2.

[0249] As a setting method, in the projection of the top wall of the box body 10, the door body 30 is opened from the closed state to the G max During the process, the second side edge N moves along the arc. That is, in the projection of the top wall of the box body 10, the door body 30 opens from the closed state to G max During the movement, the trajectory formed by 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 body 30 and the box body 10 are installed, so that timely adjustments can be made to achieve high-precision matching between the second hinge member on the door body 30 and the first hinge member on the box body 10, meeting the complex movement requirements of finely controlling the door body 30 to complete rotation and inward movement.

[0250] As a configurable method, the door 30 is opened to G' N When the distance between the second side edge N and the second reference plane M2 is the smallest. N ∈μG1+5°, G1+10°] any value. That is, the door 30 is opened from the closed state to G maxDuring the process of opening the door body 30, the distance between the second side edge N and the second reference plane M2 is minimized within the vicinity of the first guide point P1, the point where the distance between the guide trajectory line S and the door rear wall 33 is minimized. The above arrangement can effectively limit the movement trajectory of the second side edge N during the opening of the door body 30, so that the angular travel of the second side edge N approaching the second reference plane M2 is small, thereby limiting the distance of the second side edge N approaching the second reference plane M2, and preventing the second side edge N from interfering with the front face of the box body 10 defining the access opening due to excessive movement of the second side edge N toward the second reference plane M2. On the other hand, it can also serve as an auxiliary method for assembly and processing accuracy detection.

[0251] During the opening process of the door body 30, the side sealing edge F moves as the door body 30 opens, and its movement trajectory is recorded as the side sealing edge trajectory line. In the projection of the top wall of the box body 10, during the opening process of the door body 30, the side sealing edge F first moves in the direction close to the first reference plane M1 and the second reference plane M2, then moves in the direction close to the first reference plane M1 and away from the second reference plane M2, and then moves in the direction away from the first reference plane M1 and the second reference plane M2. The above arrangement is in the later stage of the opening of the door body 30. While the door body 30 moves inward as a whole, the side sealing edge F moves outward, which can compensate for the displacement of the side sealing edge F that moves inward in the early stage of the opening of the door body 30, thereby reducing the inward movement of the side sealing edge F and causing the door body 30 to excessively block the access opening, so as to increase the space utilization rate of the storage drawer to the horizontal dimension of the storage chamber.

[0252] In this embodiment, the door 30 is opened to G F When the distance between the side sealing edge F and the first body side wall (reference plane M0) is the largest (the side sealing edge F is located at point F m In this embodiment, the door 30 is opened to G F The plane parallel to the side edge F of the first body when the door 30 is opened is defined as the third reference plane M3. The third reference plane M3 does not move during the opening process of the door 30 relative to the box body 10 and is a reference plane that remains stationary relative to the box body 10. As a configurable method, G F The angle is any value between 90° and 105°. The above limitation maximizes the distance between the side sealing edge F and the side wall of the first body when the door body 30 is opened to approximately 95°. This allows the side sealing edge F to have a greater outward travel in the later stages of the door body 30 opening, thereby further compensating for the inward movement of the side sealing edge F in the early stages of the door body 30 opening, thereby minimizing the obstruction of the access opening by the door body 30.

[0253] The door 30 is opened from the closed state to the maximum angle G max During the process, the second side edge N is entirely located on the side of the third reference plane M3 close to the first body side wall, and the second side edge N is entirely located on the side of the side sealing edge F close to the first body side wall.

[0254] As a configurable method, when the door body 30 is opened to the maximum angle G max During the process of the door body 30 being opened, 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), so as to avoid the second side edge N being located on the side of the door sealing edge F away from the side wall of the first body becoming the main factor affecting the lateral dimension of the access opening. That is, during the process of the door body 30 being opened, the second side edge N is always located outside the side sealing edge F. That is, when the door body 30 is opened by G F To the maximum angle G max During the opening process, as the opening angle of the door body 30 increases, the side sealing edge F moves toward the reference plane M0, and the second side edge N is always located on the side of the side sealing edge F close to the reference plane M0. The door seal 20 gradually reduces the obstruction of the access opening, further reducing the lateral obstruction of the access opening by the door body 30, thereby increasing the lateral size of the drawer installed in the storage room, increasing the space utilization of the storage room, and making it easier for users to take and place items stored on the door body shelf. The hinge assembly with the above trajectory characteristics allows the door body 30 to move the side sealing edge F outward a certain distance during the entire inward movement, and the second side edge N is always located on the side of the side sealing edge F close to the first body side wall. It has multiple characteristics and effectively enhances its practicality.

[0255] As an practicable method, when the door body 30 is opened to the maximum angle G max When the second side edge N is located on the side of the side sealing edge F away from the third reference plane M3 in the projection of the plane where the top wall of the box body 10 is located, the second side edge N is located, and the angle between the straight line FN where the side sealing edge F and the second side edge N are located and the third reference plane M3 is any value between 0° and 8°. As a setting method, in the projection of the plane where the top wall of the box body 10 is located, the straight line FN where the side sealing edge F and the second side edge N are located is approximately parallel to the third reference plane M3; that is, when the door body 30 is opened to the maximum angle G max When the side seal edge F and the straight line FN on which the second side edge N lies are located, the angle between the third reference plane M3 is within a range of 0° to 3°. The above definition minimizes the obstruction of the access opening by the side seal edge F while effectively preventing the rotation of the second side edge N from increasing the lateral obstruction of the access opening by the door body 30.

[0256] The angle between the plane of the surface of the door seal 20 away from the door side wall 31 and the first body side wall is recorded as the first angle λ. The door body 30 continues to move from 90° to the maximum angle G max During the opening process, the first angle λ tends to increase. As an practicable 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 toward the side close to the reference plane M0.

[0257] In this embodiment, in the projection of the top wall of the box body 10, the door body 30 is opened from the closed state to the G max During the process, the side sealing edge F moves along the arc. That is, in the projection of the top wall of the box body 10, the door body 30 opens from 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 of the door body 30 and the box body 10 is accurate and whether the processing accuracy meets the requirements after installation, so that timely adjustments can be made to achieve high-precision matching between the second hinge member on the door body 30 and the first hinge member on the box body 10, meeting the complex movement requirements of finely controlling the door body 30 to complete rotation and inward movement.

[0258] As a configurable method, the door 30 is opened to G' F When the distance between the side sealing edge F and the second reference plane M2 is the smallest; wherein, G` F ∈(0°, 5°] any value; that is, the door body 30 is opened from the closed state to G max During this process, the side seal edge F reaches its minimum distance from the second reference plane M2 within a relatively small angular range during the initial opening of the door body 30. With the above-described motion trajectory of the side seal edge F, the angular range of the side seal edge F's approach to the second reference plane M2 is very small, effectively limiting the distance the side seal edge F can approach the second reference plane M2 when the door body 30 is opened. This allows the door seal 20 to quickly move away from the container, preventing compression of the door seal 20 and reducing wear on the door seal 20.

[0259] In combination with the movement of the first side edge W, the second side edge N and the side sealing edge F, in some embodiments of the present application, the circle where the first side edge trajectory line is located, the circle where the second side edge trajectory line is located, and the circle where the side sealing edge trajectory line is located are concentric circles. The setting of the hinge assembly with the above trajectory characteristics, on the one hand, enables the door body 30 to move inward during the opening process through the setting of the hinge assembly; on the other hand, enables the first side edge W, the second side edge N, and the side sealing edge F to perform regular circular arc motion. The above setting can effectively detect whether the assembly is accurate and whether the processing accuracy meets the requirements after the door body 30 and the box body 10 are installed in coordination, so that timely adjustments can be made to achieve high-precision coordination between the second hinge part on the door body 30 and the first hinge part on the box body 10, and meet the complex movement requirements of finely controlling the door body 30 to complete the rotation and move inward.

[0260] The common center of the circle where the first side edge trajectory line is located, the circle where the second side edge trajectory line is located, and the circle where the side sealing edge trajectory line is located is recorded as the edge trajectory center O L The radius of the circle where the first side edge trajectory line is located is recorded as the first side edge radius R C1 The radius of the circle where the second side edge trajectory line is located is recorded as the second side edge radius R C2 The radius of the circle where the side sealing edge trajectory line is located is recorded as the side sealing edge radius RF .

[0261] In some embodiments of the present application, R C1 <R C2 <R F That is, during the opening process of the door 30, the center of the ridge trajectory O relative to the box body 10 is stationary. L The distance from the first side edge W and the center of the edge trajectory O L The distance from the second side edge N and the center of the edge trajectory O L The distance from the side sealing edge F increases successively.

[0262] In some embodiments of the present application, in the projection of the plane where the top wall of the box 10 is located, the center of the edge trajectory O L The distance from the guide center axis P is denoted as |O L P|, the 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| is equal, that is, △QO L P is an isosceles triangle.

[0263] 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 defines more standard conditions. On the one hand, it meets the requirement for the door body 30 to move inward when opening, and on the other hand, it can meet the requirements of precision detection, thereby ensuring high-precision coordination of the hinge assembly and meeting the requirements of finely controlling the complex movement of the door body 30 to complete rotation and inward movement.

[0264] As a configurable method, in the plane where the top wall of the box 10 is located, the distance between the guide center axis P and the second reference plane M2 is recorded as D1, and the distance between the guide center axis Q and the second reference plane M2 is recorded as D2; the center of the ridge trajectory O L The distance from the second reference plane M2 is recorded as D3. Where D1 < D2 < D3; In addition, (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 edge trajectory center O L The relative position relationship corresponds to the trajectory line having this feature, which makes the structure of the hinge assembly compact and enables the door body 30 to move within a larger angular range.

[0265] As another setting method, in the plane where the top wall of the box body 10 is located, the distance between the guide center axis P and the first reference plane M1 is recorded as H1, and the distance between the guide center axis Q and the first reference plane M1 is recorded as H2; the center of the edge trajectory O L The distance from the first reference plane M1 is denoted as H3. Where H2 < H1 < H3; In addition, (H1-H2): (H3-H1)∈μ0.7, 1] any value. With the above settings, the first hinge axis 41, the second hinge axis 42 and the edge trajectory center O are further defined. L The relative position relationship corresponds to the trajectory line having this feature, which makes the structure of the hinge assembly compact and enables the door body 30 to move within a larger angular range.

[0266] As a configurable method, H2-H3 is any value between 8mm and 11mm; D3-D1 is any value between 8mm and 10mm; that is, the center of the edge trajectory O L The guide center axis P and the guide center axis Q are concentrated in a small range and the distance between them is small. The hinge assembly with the above trajectory characteristics has a more compact structure.

[0267] In some embodiments of the present application, the center of the edge trajectory O L It coincides with the guide center O0 of the guide trajectory line S when the door body 30 is closed; that is, when the door body 30 is closed, the circle where the first side edge trajectory line is located, the circle where the second side edge trajectory line is located, the circle where the side sealing edge trajectory line is located and the circle where the guide trajectory line S is located are concentric circles.

[0268] In some embodiments of the present application, when the door body 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 body 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.

[0269] In some embodiments of the present 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 guide groove formed is also a smooth curve; that is, the guide trajectory line S and the curved groove wall of the guide groove formed have no sharp points, so that the first hinge shaft 41 and the second hinge shaft 42 can move smoothly under the guidance of the guide portion 50, thereby ensuring that the door body 30 opens more smoothly. The guide groove defined by the above 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, so that the second hinge shaft 42 has good smoothness in movement relative to the trajectory groove, thereby extending the service life of the hinge shaft. In addition, during the opening process of the door body 30, the first hinge shaft 41 and the second hinge shaft 42 move continuously and uninterruptedly relative to the guide portion 50 throughout the entire process.

[0270] 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 a roller follower cam mechanism, the size of the roller radius often affects the shape of the actual cam profile curve, so the roller radius must be selected reasonably.

[0271] Where, η: theoretical profile; η′: actual profile; ρ: theoretical profile radius; ρ′: actual profile radius; ρ min : The minimum curvature radius of the convex part of the theoretical contour curve (i.e. the curvature radius of the sharpest part); r T : Roller radius.

[0272] like Figure 35 As shown in a), when the cam theoretical profile curve is a concave curve, ρ′=ρ+r T , so r T The size of is not limited by ρ. At this time, regardless of the roller radius, the cam working profile is always a smooth curve.

[0273] When the cam theoretical profile curve is a convex curve, then ρ=ρ′-r T :

[0274] (1) Figure 35 As shown in b), when ρ min >r T ,ρ′>0, then the actual contour curve is a smooth curve;

[0275] (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 easily change the movement law of the cam, and cannot be used;

[0276] (3) Figure 35 As shown in (d), when ρ min <r T When ρ′<0, the actual contour curve will cross, and the actual contour curve above the intersection will be cut off during processing, resulting in the inability to realize the motion law of this part.

[0277] Therefore, in order to make the cam profile neither sharp nor intersecting at any position, the roller radius r T Must be smaller than the minimum curvature radius ρ of the convex part of the theoretical contour curve min , generally choose r T ≤0.8ρ min If this requirement cannot be met, increase the cam base circle radius and redesign the cam profile curve.

[0278] Accordingly, in this embodiment, the guide track line S corresponds to the cam theoretical profile curve of the guide portion 50. In this embodiment, the cam theoretical profile curve is an outward convex curve (the guide track line S convex in the direction away from the door front wall); the curved groove wall of the guide portion 50 close to the door front wall 31 is the actual profile curve; the radius of the second hinge axis 42 also satisfies r T The size of satisfies the setting (1) (ρ min >r T ) to ensure that the curved groove wall (actual contour curve) of the guide portion 50 near the door front wall 31 is a smooth curve, which, on the one hand, allows the first hinge shaft 41 and the second hinge shaft 42 to move smoothly, and on the other hand, reduces the wear of the guide portion 50. That is, the guide portion 50 is essentially configured as a cam. The setting of the cam theoretical contour curve as a convex curve in this embodiment can effectively avoid the defect of easy wear caused by the concave structure. In summary, in this embodiment, the guide trajectory line S is configured as a convex cam curve, and there is ρ min >r T As another possible implementation, r T ≤0.8ρ min . So that the guide portion is smooth and has no sharp points, so that the hinge shaft moves smoothly under the guidance of the guide portion 50.

[0279] In the present invention, a guide portion 50 (specifically, a connected groove) having a curved guide trajectory line S is provided, so that the first hinge shaft 41 and the second hinge shaft 42 can move simultaneously relative to the guide portion 50; on the one hand, the guide portion 50 is simple to process and the processing accuracy is improved; on the other hand, the coordination of the movement of the first hinge shaft 41 and the second hinge shaft 42 is increased, thereby improving the stability and smoothness of the door opening; furthermore, the guide portion 50 occupies a small space and has a compact structure, so that the hinge assembly of the present invention can be applied to thin-sized doors to meet the needs of inward movement.

[0280] Example 2

[0281] The principle of the second embodiment is the same as that of the first embodiment. Figure 36-Figure 37As shown, the difference from the first embodiment is that in the second embodiment, when the door body 30 is opened to 90 degrees, the fifth guide point P5 of the first hinge axis 41 on the guide trajectory line S, that is, the fourth guide point P4 coincides with the fifth guide point P5. That is, the straight line between the point on the guide trajectory line S where the central axis of the first hinge axis 41 is located when the door body 30 is opened to 90 degrees and the point on the guide trajectory line S where the first hinge axis 41 is located when the door body 30 is closed is parallel to the door front wall 31. The above setting defines the relative relationship between the door body 30 in the closed state and the state opened to 90°, so that in the process of opening the door body 30 from the closed state to 90°, the first hinge shaft 41 and the second hinge shaft 42 both move toward the side close to the door side wall 32 throughout the entire process, which maintains the tendency of the first hinge shaft 41 and the second hinge shaft 42 to maintain unidirectional movement, and increases the coordination of the first hinge shaft 41 and the second hinge shaft 42 with the guide part 50; on the other hand, the hinge assembly with the above trajectory characteristics can, after the door body 30 is assembled, check the molding accuracy of the assembly and the guide part 50 through the relationship between the two states of the door body 30 being closed and opened to 90°, so as to find problems in time and make adjustments to ensure that it can meet the complex movement requirements of finely controlling the door body 30 to complete the rotation and move inward.

[0282] Example 3

[0283] The principle of the third embodiment is the same as that of the first embodiment, and the difference between the third embodiment and the first embodiment is that Figure 38 As shown, in this second embodiment, the guide trajectory line S first extends along a curve toward the door sidewall 32 and the door rear wall 33, and then extends along a curve toward the door sidewall 32 and away from the door rear wall 33. As in 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.

[0284] In the projection of the top wall of the box body 10, the angle γ between the 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 access opening is any value between 45° and 60°. This ensures that the door body 30 can be opened to an angle of not less than 90°, making it convenient to take items in and out.

[0285] Under the setting of this embodiment, during the entire process of opening the door body 30, the first hinge shaft 41 and the second hinge shaft 42 both move toward the side close to the door side wall 32, so that the first hinge shaft 41 and the second hinge shaft 42 can maintain the trend of moving in the same direction (close to the door side wall 31) throughout the entire process, thereby 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 body 30.

[0286] Example 4

[0287] The principle of the fourth embodiment is the same as that of the first embodiment. Figures 39-41As shown, the difference from the first embodiment is that the guide trajectory line S in the fourth embodiment is an elliptical arc.

[0288] As a setting method, the major axis of the ellipse where the elliptical arc is located is parallel to the door front wall 31. At this time, the endpoint of the minor axis of the ellipse is the first guiding point P1 with the smallest distance from the door rear wall 33.

[0289] As a setting mode, when the door body 30 is closed, the starting guide point Q0 where the center axis of the second hinge axis 42 is located on the guide track line S is the endpoint of the ellipse major axis. Correspondingly, the fifth guide point P5 is the other endpoint of the ellipse major axis.

[0290] In combination with the second embodiment, it can be arranged that when the door body 30 is opened to 90°, the fifth guide point P5 of the first hinge axis 41 on the guide trajectory line S, that is, the fourth guide point P4 coincides with the fifth guide point P5; that is, the point on the guide trajectory line S where the center axis of the first hinge axis 41 is located when the door body 30 is opened to 90° and the straight line where the point on the guide trajectory line S where the first hinge axis 41 is located when the door body 30 is closed are parallel to the door front wall 31.

[0291] Specifically, in the two-dimensional coordinate system XOY that is stationary relative to the door body 30 in the first embodiment, the parametric equation of the elliptical arc is as follows:

[0292] The parametric equation of the ellipse where the elliptical arc is located is: x = x1 + a1 cos θ1, y = y1 + b1 sin θ1; in this embodiment, a1> b1, θ1 is the eccentric angle; (x1, y1) are the coordinates of the center of the circle, and the center of the elliptical arc is recorded as O t ;

[0293] In some embodiments of the present application, the center of the elliptical arc O t The distance between the center of mass plane C is any value between 0 and 2 mm. The center of the elliptical arc is located near the center of mass plane C, and most of the elliptical arc guide track line S is located on the side of the center of mass plane C close to the door rear wall 33; so that the force on the door body 30 is balanced when the door is opened, and the stability of the door body 30 is increased. The center of the elliptical arc can be set. t and lies on the centroid plane C.

[0294] As a setting method of this embodiment, a1:b1 belongs to μ1, 2]; the above defines the shape of the elliptical arc where the guide trajectory line S is located to ensure the movement efficiency of the first hinge axis 41 and the second hinge axis 42 relative to the guide part 50, thereby improving the opening efficiency of the door body 30.

[0295] The second hinge member, with the aforementioned trajectory characteristics, forms a guide trajectory S, an elliptical arc, which is a regular standard curve. In this embodiment, the guide portion 50 guides the first and second hinge axes 41, 42 in an elliptical arc, enhancing the smoothness and stability of their relative motion. Furthermore, the guide portion 50 of the present invention is more compact, occupies less space, and can be formed on a thin door body 30 for precise control of the door body 30.

[0296] Combine Figures 39-41 As shown, it corresponds to the setting of each guiding point on the guide trajectory line S and each guiding point on the guide trajectory line S in the first embodiment.

[0297] During the opening process of the door body 30, the movement of the first hinge shaft 41 and the second hinge shaft 42 relative to the guide portion 50 is divided into four stages. The difference from the guide portion 50 in the first embodiment, which is set as a circular arc guide trajectory line S, is that in this embodiment, the first hinge shaft 41 and the second hinge shaft 42 perform elliptical arc motion throughout. In addition, the displacement relationship of the door body 30 when opening in this embodiment is the same as that in the first embodiment; the movement stages and the displacement relationship during the movement process will not be repeated here. The configuration of this embodiment enables the first hinge shaft 41 and the second hinge shaft 42 to move along a regular elliptical arc throughout the entire process, and the door body 30 opens smoothly and stably, which facilitates the precise control of the door body 30 to perform complex movements.

[0298] It should be noted that, in this embodiment, the guide trajectory line S is an elliptical arc, and the trajectory formed by the axis center point I can be approximated as an elliptical arc; wherein, the trajectory line of the axis center point I that is approximately an elliptical arc is recorded as the elliptical axis center point trajectory S'.

[0299] As a configurable method, the elliptical axis center point trajectory S' is co-centered with the elliptical center of the guide trajectory line S. It should be noted that the above "approximately an elliptical arc" means that the actual trajectory line of the axis center point I is not a standard elliptical arc. In this embodiment, the deviation between the actual trajectory line of the axis center point I and the standard elliptical arc is less than 0.3mm. That is, the point on the elliptical axis center point trajectory S' is denoted as P'; in the XOY coordinate system, the straight line O t The intersection of P` and the actual axis center point I trajectory line is recorded as P``; t In the P` direction, the distance between P` and P`` is less than 0.3mm.

[0300] Combine Figures 42-47As shown, the comparison method is the same as that in the first embodiment; it is assumed that the door body 30 rotates around the axis center point I of the previous state to the position of the adjacent next state (the door body 30 is represented by a dotted line). During this movement, the rotation center of the door body 30 is fixed relative to the door body 30; then under this movement trend, when the door body 30 is opened, the position of the first side edge W relative to the first hinge is at W'; the position of the second side edge N relative to the first hinge is at N'; and the position of the side sealing edge F relative to the first hinge is at F'. Figure 42 In the figure, the position of the door body 30 indicated by the dotted line is the position reached when the door body 30 is simply rotated to G1 around the midpoint I (I0) of the axis line segment PQ of the door body 30 when the door body 30 is closed; the position of the door body 30 indicated by the solid line is the position reached when the door body 30 is rotated open to G1 in the manner of the present invention; Figure 43 In the embodiment, the position of the door body 30 indicated by the dotted line is the position reached when the door body 30 is opened to G1 by the rotation method of the present invention and then simply rotates to G2 with the door body 30 at G1 relative to the axis center point I (the axis center point I (I1) of the previous state) as the center; the position of the door body 30 indicated by the solid line is the position reached when the door body 30 is rotated to G2 by the setting method of the present invention; the same reason 44- Figure 47 Schematic comparison of two different opening methods for each opening angle.

[0301] Comparing the arrangement of the present invention (the door body 30 rotates around a point that maintains dynamic changes relative to the door body 30 throughout the entire process) with the simple rotation of the door body 30 around the center point I of the axis in its previous state, it can be seen that the movement trend of the door body 30 during the opening process is the same as that of the first embodiment; specifically:

[0302] The door 30 opens from the closed state to G max During the process, in this application, the first side edge position W is located at the side of W' close to the second body side wall and away from the access opening; the second side edge position N is located at the side of N' close to the second body side wall and away from the access opening; the side sealing edge position F is located at the side of F' close to the second body side wall and away from the access opening. That is, the door body 30 is opened from the closed state to the G max During the process, the door body 30 has a tendency to move inward and forward. It should be noted that the comparison between the position of the door body 30 in the current state of the present invention and the position of the door body 30 when it is assumed to be simply rotated around the axis center point I from the previous state of the present invention to the opening angle of the door body 30 of the present invention is representative, and can represent the movement trend of the door body 30 relative to the previous state during the opening process of the door body 30 of the present invention. Only selected angles are used for comparison and illustration to illustrate the movement trend of the door body 30 when it is opened.

[0303] In this embodiment, the movement of the first side edge W, the second side edge N and the side sealing edge F is different from that in the first embodiment; Figure 48 As shown, specifically,

[0304] The door 30 opens from the closed state to the maximum angle G max During the movement, the motion trajectories of the first side edge W, the second side edge N, and the side sealing edge F are all non-circular. The motion trends of the first side edge W and the second side edge N are consistent with those in the first embodiment (the relative positional relationship with the first reference plane M1 and the second reference plane M2 during the movement), and are not further described here.

[0305] In this embodiment, the door body 30 is opened from the closed state to the maximum angle G max During this process, the side sealing edge F first moves toward the first reference plane M1 and away from the second reference plane M2, and then moves away from the first reference plane M1 and the second reference plane M2. That is, in this embodiment, the side sealing edge F moves rapidly away from the access opening, effectively avoiding squeezing the door seal 20.

[0306] In this embodiment, during the opening process of the door body 30, the movement principle and displacement relationship of the first hinge shaft 41 relative to the guide portion 50 and the second hinge shaft 42 relative to the guide portion 50 are the same as those in the first embodiment and will not be repeated here.

[0307] It should be noted that the "elliptical arc" involved in the present invention includes the standard elliptical arc in the standard mathematical definition (the part between any two points on the ellipse), and also includes a curve that deviates slightly from the standard elliptical arc in the standard mathematical definition due to processing errors, micro-deformation of components, micro-wear, reserved gaps, etc., or its own performance, but still has the characteristics of an elliptical arc (such as fluctuations around an elliptical arc with small deviations).

[0308] Example 5

[0309] The principle of the fifth embodiment is the same as that of the fourth embodiment. The difference between the fifth embodiment and the fourth embodiment is that the guide track line S in the fifth embodiment is formed by connecting an elliptical arc and a circular arc. Figures 49-51 As shown, specifically, the elliptical arc is located on the side of the circular arc away from the door side wall 32 .

[0310] As a configuration method in this embodiment, the fifth guide 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 the fourth embodiment, and the circular arc corresponds to the segment P5P7 (indicated by the dotted line). The following examples are based on this.

[0311] The arc extends from the fifth guiding point P5 to a seventh guiding point P7 in a direction away from the door side wall 32 and the door rear wall 33 .

[0312] In some embodiments of the present application, the ellipse where the elliptical arc is located is inscribed in the circle where the circular arc is located.

[0313] Specifically, in the two-dimensional coordinate system XOY that is stationary relative to the door body 30 in the first embodiment, the parametric equations of the elliptical arc and the circular arc are as follows:

[0314] The parametric equation of the ellipse where the elliptical arc is located is: x = x1 + a1 cos θ1, y = y1 + b1 sin θ1; in this embodiment, a1> b1, θ1 is the eccentric angle; (x1, y1) are the coordinates of the center of the circle, and the center of the elliptical arc is recorded as O t ;

[0315] The parametric equations of the circle where the arc is located are: x = x2 + r2 cos θ2, y = y2 + r2 sin θ2; (x2, y2) are the coordinates of the center of the circle, and the center of the arc is recorded as O y ; r2 is its radius, θ2 is the parameter, which is the rotation angle, and (x, y) is the coordinate of the passing point;

[0316] In some embodiments of the present application, the center of the elliptical arc O t and the arc's center O y coincide with each other; that is, x1=x2, y1=y2.

[0317] The second hinge member, with the aforementioned trajectory characteristics, has a guide trajectory line S formed by connecting elliptical and circular arcs, forming a regular curve. In this embodiment, the guide portion 50 guides the movement of the first and second hinge shafts 41, 42, enhancing the smoothness and stability of their relative motion. Furthermore, the guide portion 50 of the present invention is more compact, allowing it to be formed on a thin door body 30, enabling precise control of the door body 30.

[0318] Combine Figure 49 As shown, it corresponds to the setting of each guiding point on the guide trajectory line S and each guiding point on the guide trajectory line S in the first embodiment;

[0319] During the opening process of the door body 30, its movement is divided into four stages according to the movement of the first hinge shaft 41 and the second hinge shaft 42 relative to the guide part 50; it is different from the guide part 50 in the first embodiment in which the guide trajectory line S is set as an arc. In this embodiment, the first hinge shaft 41 and the second hinge shaft 42 first make an elliptical arc movement and then make a circular arc movement; as a configurable method, the first hinge shaft 41 first makes an elliptical arc movement and then makes a circular arc movement, while the second hinge shaft 42 makes an elliptical arc movement throughout the entire process.

[0320] Furthermore, the displacement relationship of the door body 30 during opening in this embodiment is the same as that in the first embodiment; the movement phases and the displacement relationship during the movement are not further described here. The arrangement of this embodiment allows the first hinge axis 41 and the second hinge axis 42 to move along a regular elliptical or circular arc throughout their entire movement, allowing the door body 30 to open smoothly and stably, facilitating precise control of complex movements of the door body 30.

[0321] The arrangement of this embodiment is compared with the simple rotation of the door body 30 around the axis center point I of its previous state as in the fourth embodiment, and will not be repeated here.

[0322] In addition, 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 that in the fourth embodiment, and will not be described again here.

[0323] It should be noted that, in combination with Examples 1 to 5, after the setting trend of the guide trajectory line S in the present invention is limited, the form of the guide trajectory line S is not limited. It can be set as a circular arc as in Example 1, or as an elliptical arc as in Example 4, or as an elliptical arc connected tangentially to a circular arc as in Example 5; of course, it can also be set as a form of tangential connection of multiple circular arcs, or as a form of a combination of multiple elliptical arcs and circular arcs, or as a form of a connection between a non-elliptical arc and a circular arc, but all of them have the characteristics of a smooth curve. I will not go into details here.

[0324] In the aforementioned embodiment, the provision of a single circular arc or elliptical arc makes the movement of the first hinge shaft 41 and the second hinge shaft 42 relative to the guide portion 50 more regular and more detectable.

[0325] In addition, it should be noted that the second and third embodiments are also applicable to other embodiments and other solutions not mentioned but having the trajectory characteristics of the present invention, and are not limited to the arc-shaped guide trajectory line S in the first embodiment.

[0326] Example 6

[0327] This embodiment mainly describes the specific configuration of the second hinge. A track block 70 is fixed to the end of the door body 30 close to the first hinge, and a guide portion 50 is formed on the track block 70.

[0328] Specific reference Figure 52-54 In this embodiment, the track block disposed at the lower end of the door body 30 is used as an example for description. Specifically, the track block 70 comprises a groove bottom 74, a notch 73 disposed opposite to the groove bottom 74, a circumferential groove wall 72 surrounding the groove bottom 74, and a ring plate 71 adjacent to the notch 73 and surrounding the circumferential groove wall 72.

[0329] The door body 30 has an accommodating portion 34 formed at the end near the first hinge. The bottom wall of the accommodating portion 34 has a mounting hole 35. A track block 70 is mounted within the accommodating portion 34, with its circumferential groove wall 72 mating with the wall of the mounting hole 35. The surface of the ring plate 71, facing away from the first hinge, mates with the bottom wall of the accommodating portion 34, and the circumference of the ring plate 71 mates with the circumferential sidewalls of the accommodating portion 34. As a possible configuration, the track block 70 and the mounting hole 35 are interference fit.

[0330] In this embodiment, the guide portion is a through groove without sharp points; the hole wall of the mounting hole 35 matched therewith is also formed by connecting a circular arc or an elliptical arc, which is more convenient to process and effectively ensures the processing accuracy of the mounting hole 35.

[0331] The track block 70 is made of a self-lubricating, wear-resistant plastic material, effectively ensuring smooth movement of the first door shaft 41 and the second door shaft 42 relative to the guide portion 50 when the door body 30 is opened. As a configurable method, the track block 70 can be made of POM, which has strong friction resistance and can increase its service life.

[0332] In some embodiments of the present application, a first mating portion is provided at one end of the first hinge member away from the first body side wall, and a second mating portion is provided on the side of the door body 30 located on the track block 70 away from the door side wall 32. The second mating portion is used to cooperate with the first mating portion to achieve locking and unlocking of the door body 30 and the box body 10.

[0333] Specifically, the first matching portion provided on the side of the hinge plate 40 away from the first body side wall is provided as a stopper 403 , and a hooking gap 404 is formed on the side of the stopper 403 close to the box body.

[0334] As a possible configuration, a locking block 80, forming a second mating portion, is provided on the door body 30, located on the side of the track block 70 away from the door sidewall 32. The locking block 80 includes a root portion 81 and a hook portion 82. The hook portion 82 first extends away from the door sidewall 32 and then bends toward the side closer to the door rear wall 33 and the door sidewall 32. The opening of the hook portion 82 faces the door sidewall 32, and the free end of the hook portion 82 is located on the side closer to the door rear wall 33. The root portion 81 is fixedly connected to the door body 30 to strengthen the connection strength between the root portion 81 and the door body 30 and ensure the deformation capacity of the hook portion 82.

[0335] When the door body 30 is in a closed state, the free end of the lock hook 82 is accommodated in the hook gap 404, and the stop portion 403 is located in the lock hook 82. The lock hook 82 on the door body 30 hooks the stop portion 403 on the hinge plate 40, thereby locking the door body 30 to prevent the door body 30 from being loosely closed and affecting the refrigeration and freezing effect of the refrigerator; when the door body 30 is opened, the lock hook 82 is deformed by the force and overcomes the obstruction of the stop portion 403, thereby disengaging from the stop portion 403.

[0336] As a configurable manner, the track block 70 and the locking block 80 are integrally formed, and the root portion 81 of the locking block 80 is connected to the ring plate 71 of the track block 70. Accordingly, the receiving portion 34 at the end of the door body 30 can accommodate the integrally formed track block 70 and the locking block 80 as a whole.

[0337] As another possible arrangement, the track block 70 and the locking block 80 are formed separately; a receiving portion 36 for installing the locking block 80 is formed at the end of the door body 30 close to the second hinge member on the side of the accommodating portion 34 away from the door side wall 32.

[0338] In summary, embodiments 1 to 6 of the present invention illustrate the solutions of the present invention from multiple perspectives; it should be noted that embodiments 2 to 6 mainly illustrate the differences between them and other embodiments, without excessive explanation of the similarities. It should be added that the first hinge and the second hinge, which are used to precisely control the door body 30 to rotate open and move in a specific direction, must form a structural setting with various trajectory characteristics. It is necessary to achieve the coordination of the first hinge and the second hinge through a refined design, and ultimately achieve precise control of the door body 30 to perform complex movements. In addition, the features of each embodiment can be combined with each other without conflict, and the technical solutions do not deviate from the scope of the technical solutions of each embodiment of the present application.

[0339] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0340] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that include: a box body defining a storage chamber having an access opening; The box body has a first side wall and a second side wall that are arranged opposite to each other; A door body, used for opening or closing the access opening; A hinge assembly connecting the door body and the box body so that the door body can rotate relative to the box body; the hinge assembly includes: A guide portion located at an end of the door body close to the side wall of the first body; the guide portion has a curved guide track line; A first hinge shaft and a second hinge shaft are fixed to the box body; when the door body is opened, the first hinge shaft and the second hinge shaft simultaneously move in a curved line relative to the guide portion along the guide trajectory, and the door body opens the access opening and moves inward a certain distance; wherein the motion trajectory of the first hinge shaft and the motion trajectory of the second hinge shaft at least partially overlap; The door body has a first side edge away from the box body when the door body is closed, and a second side edge located on a side of the first side edge close to the box body; The door body opens to the maximum angle G max During the process, the motion trajectory of the first side edge and the motion trajectory of the second side edge are both arc-shaped; The plane where the access opening is located is recorded as a second reference plane M2. A first reference plane M1 perpendicular to the second reference plane M2 is provided on the side of the first body sidewall close to the second body sidewall, and the first reference plane M1 is a midplane between the first body sidewall and the second body sidewall. The first reference plane M1 and the second reference plane M2 remain stationary relative to the box body during the opening process of the door body relative to the box body. In the projection of the top wall of the box, the door is opened to the maximum angle G max During the process, the first side edge first moves away from the first reference plane M1 and toward the second reference plane M2, and then moves toward the first reference plane M1 and the second reference plane M2; The second side edge first moves in a direction close to the first reference plane M1 and the second reference plane M2, then moves in a direction close to the first reference plane M1 and away from the second reference plane M2, and then moves in a direction away from the first reference plane M1 and the second reference plane M2; The door body comprises a door front wall away from the box body when the door body is closed, and a door side wall connected to the door front wall and close to the guide portion; A door seal is provided on the wall surface of the door body opposite to the door front wall, and the door seal cooperates with the front end surface of the box body to seal the access opening when the door body is closed, and the door seal has a side sealing edge close to the door side wall and away from the door front wall; The door body opens to the maximum angle G max During the process, the movement trajectory of the side sealing edge is an arc shape; The motion trajectory of the first side edge, the motion trajectory of the second side edge and the motion trajectory of the side sealing edge are concentric circles; The common center of the circle where the first side edge trajectory line is located, the circle where the second side edge trajectory line is located, and the circle where the side sealing edge trajectory line is located is recorded as the edge trajectory center O L The radius of the circle where the first side edge trajectory line is located is recorded as the first side edge radius R C1 The radius of the circle where the second side edge trajectory line is located is recorded as the second side edge radius R C2 The radius of the circle where the side sealing edge trajectory line is located is recorded as the side sealing edge radius R F ; Among them, R C1 <R C2 <R F .

2. The refrigerator according to claim 1, wherein: 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; In the plane where the top wall of the box is located, the distance between the guide center axis P and the second reference plane M2 is recorded as D1, and the distance between the guide center axis Q and the second reference plane M2 is recorded as D2; the center of the ridge trajectory O L The distance from the second reference plane M2 is recorded as D3; Among them, D1<D2<D3.

3. The refrigerator according to claim 2, characterized in that In the plane where the top wall of the box is located, the distance between the guide center axis P and the first body side wall is recorded as H1, and the distance between the guide center axis Q and the first body side wall is recorded as H2; the center of the edge trajectory O L The distance from the side wall of the first body is recorded as H3; wherein, H2<H1<H3.

4. The refrigerator according to claim 3, characterized in that In the projection of the plane where the top wall of the box is located, the center of the edge trajectory O L The distance from the guide center axis P is denoted as |O L P|, the center of the edge trajectory O L The distance from the guide center axis Q is recorded as |O L Q|, where |O L P| and |O L Q|Equal.

5. The refrigerator according to any one of claims 1 to 4, characterized in that: The center O of the ridgeline trajectory L It coincides with the guide circle center O0 of the guide trajectory when the door body is closed.

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