refrigerator

Abstract

The present invention provides a refrigerator, which comprises a box body, a hinge arranged on the box body, and a door body; the hinge has a positioning groove and a guide groove; the end of the door body close to the hinge is provided with a positioning shaft that matches the positioning groove, and a guide shaft that matches the guide groove on the side of the positioning shaft away from the door front wall; the positioning shaft moves relative to the position of the positioning shaft when the door body is closed, and moves in a direction away from the door side wall when the door body is closed; the guide shaft moves relative to the position of the guide shaft when the door body is closed, and moves in a direction away from the door side wall when the door body is closed, so that the door body moves inward a certain distance; the door body is opened to the maximum angle G max When the refrigerator is opened, the positioning shaft is located at the end of the positioning groove away from the side wall of the first body; the guide shaft is located at the end of the guide groove away from the side wall of the first body; the guide shaft is located on the side of the positioning shaft away from the side wall of the first body and the take-and-put opening; the refrigerator of the present invention ensures that the door body will not extend beyond or extend too much beyond the side of the box body when opened, and the door body moves smoothly when opened.

Description

Technical Field

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

[0002] In the related art, the hinge structure of the refrigerator door is mostly a single-axis type, and the door body rotates around the hinge axis through the cooperation between the hinge axis and the door body's shaft sleeve. When the door body of this type of hinge structure is opened, the corner of the door body will extend beyond the side of the box body.

[0003] For built-in refrigerators, the refrigerator is generally placed in a cabinet. It is required that when the door is opened to 90 degrees, the corners of the door body cannot exceed the size of the cabinet too much, which limits the use of the refrigerator. Summary of the Invention

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

[0005] To this end, the present application aims to provide a refrigerator whose hinge structure ensures that the door does not extend beyond or extends too far beyond the side of the refrigerator body when opened.

[0006] The refrigerator according to the present application comprises:

[0007] The box body defines a storage room with an access opening; the box body includes a first side wall and a second side wall arranged opposite to each other;

[0008] A hinge is provided on the box body and is close to the side wall of the first body; the hinge has a positioning groove and a guide groove;

[0009] The door body comprises a door front wall away from the box body when the door body is closed, and a door side wall close to the hinge and connected to the door front wall; the end of the door body close to the hinge is provided with a positioning shaft that cooperates with the positioning groove, and a guide shaft on the side of the positioning shaft away from the door front wall and cooperates with the guide groove;

[0010] During the process of opening the door body from a closed state, the positioning shaft moves relative to the position of the positioning shaft when the door body is closed, and moves in a direction away from the door side wall when the door body is closed; the guide shaft moves relative to the position of the guide shaft when the door body is closed, and moves in a direction away from the door side wall when the door body is closed, so that the door body moves inward by a certain distance;

[0011] The door body opens to the maximum angle G max When the positioning shaft is located at the end of the positioning groove away from the first body side wall; the guide shaft is located at the end of the guide groove away from the first body side wall; the guide shaft is located on the side of the positioning shaft away from the first body side wall and the pick-up and release port.

[0012] In some embodiments of the refrigerator of the present application, during the process of the door body opening from the closed state to the third angle G3, the positioning axis moves away from the door front wall and the door side wall when the door body is closed;

[0013] The guide shaft first moves in a direction away from the door front wall and the door side walls when the door body is closed, and then moves in a direction away from the door side walls when the door body is closed and close to the door front wall when the door body is closed.

[0014] In some embodiments of the refrigerator of the present application, the door is opened from the third angle G3 to the maximum angle G max During the process, the positioning shaft and the guide shaft both move in a direction away from the door side wall when the door body is closed and close to the door front wall when the door body is closed.

[0015] In some embodiments of the refrigerator of the present application, the positioning groove is located on a side of the guide groove away from the access opening and close to the side wall of the first body;

[0016] The guide groove is in a curved shape; the central trajectory line of the guide groove is an outwardly convex cam curve; the radius of the guide shaft is smaller than the minimum curvature radius of the central trajectory line of the guide groove.

[0017] In some embodiments of the refrigerator of the present application, when the door body is closed, the positioning shaft is located at the end of the positioning groove away from the door side wall, and the guide shaft is located at the end of the guide groove close to the door side wall; the guide shaft is located on the side of the positioning shaft close to the door side wall and away from the door front wall.

[0018] In some embodiments of the refrigerator of the present application, within the projection of the plane on which the top wall of the cabinet is located, the plane on which the first side wall is located is designated as the Y axis, and a straight line located on the side of the hinge plate away from the access opening and perpendicular to the first side wall is designated as the X axis; the X axis and the Y axis intersect at the origin O; the direction from the door front wall toward the cabinet when the door is closed is designated as the positive direction of the Y axis, and the direction from the first side wall toward the second side wall is designated as the positive direction of the X axis, forming a two-dimensional coordinate system XOY;

[0019] The center trajectory line of the positioning groove is recorded as the first trajectory line S, and the function corresponding to the first trajectory line S in the coordinate system XOY is recorded as Y=F(X); Y=F(X) is a continuous function;

[0020]

[0021] Among them, X4>X3>X2>X1>X0>0; F`3>F`1>F`2>0>F`4; F`3>|F`4|>F`1.

[0022] In some embodiments of the refrigerator of the present application, during the process of the door body opening from the closed state to G1, the displacement of the door body relative to the cabinet close to the access opening per unit angle of rotation is recorded as ξ1, ξ1>0;

[0023] During the process of the door body opening from G1 to G2, the displacement of the door body relative to the box body close to the access opening per unit angle of rotation is recorded as ξ2, ξ2>0; wherein, G2>G1, ξ2<ξ1.

[0024] In some embodiments of the refrigerator of the present application, during the process of the door body opening from the closed state to G2, the door body moves inward by a distance of δ1 per unit angle of rotation;

[0025] The door body is opened from G2 to G max During the process, the door body moves inward by a distance of δ2 per unit angle of rotation; wherein, G2>G1, δ1>δ2.

[0026] In some embodiments of the refrigerator of the present application, a first mating portion is formed on a side of the hinge away from the side wall of the first body, and a second mating portion is provided on an end of the door body close to the hinge to be locked or unlocked with the first mating portion;

[0027] The refrigerator is provided with two door bodies arranged opposite to each other; a turning beam is provided at one end of one of the door bodies close to the other; a guide groove is provided at the top of the storage compartment; a guide block is provided at the top of the turning beam to match the guide groove;

[0028] The door is closed to G B1 When , the elastic deformation of the second fitting portion is maximum;

[0029] The door is closed to G S When the guide block begins to contact the guide groove; wherein, G B1 ≥G S .

[0030] In some embodiments of the refrigerator of the present application, a first mating portion is formed on a side of the hinge away from the side wall of the first body, and a second mating portion is provided on an end of the door body close to the hinge to be locked or unlocked with the first mating portion;

[0031] The refrigerator is provided with two door bodies arranged opposite to each other; one end of the two door bodies arranged opposite to each other is provided with a flip beam; a torsion spring is provided in the flip beam;

[0032] The door is closed to G B1 When , the elastic deformation of the second fitting portion is maximum;

[0033] The door is closed to GF When the flip beam flips to the critical point of the torsion spring, G F ≥G B1 .

[0034] Compared with the prior art, the advantages and positive effects of the present invention are:

[0035] The present invention provides a refrigerator, which comprises a box body, a hinge arranged on the box body, and a door body; the hinge has a positioning groove and a guide groove; the end of the door body close to the hinge is provided with a positioning shaft that matches the positioning groove, and a guide shaft that matches the guide groove on the side of the positioning shaft away from the door front wall; the positioning shaft moves relative to the position of the positioning shaft when the door body is closed, and moves in a direction away from the door side wall when the door body is closed; the guide shaft moves relative to the position of the guide shaft when the door body is closed, and moves in a direction away from the door side wall when the door body is closed, so that the door body moves inward a certain distance; the door body is opened to the maximum angle G max When the refrigerator is opened, the positioning shaft is located at the end of the positioning groove away from the side wall of the first body; the guide shaft is located at the end of the guide groove away from the side wall of the first body; the guide shaft is located on the side of the positioning shaft away from the side wall of the first body and the take-and-put opening; the refrigerator of the present invention ensures that the door body will not extend beyond or extend too much beyond the side of the box body when opened, and the door body moves smoothly when opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 is a perspective view of a refrigerator of the present invention;

[0038] Figure 2 is a top view of the refrigerator of the present invention;

[0039] Figure 3 yes Figure 2 Schematic diagram of the local structure;

[0040] Figure 4 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;

[0041] Figure 5 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0042] Figure 6 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0043] Figure 7 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0044] Figure 8 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[0045] Figure 9 Schematic diagram of the first trajectory line S in the coordinate system XOY in the first embodiment of the refrigerator of the present invention;

[0046] Figure 10 Schematic diagram of the movement of the positioning shaft relative to the positioning groove and the guide shaft relative to the guide groove in the first embodiment of the refrigerator of the present invention;

[0047] Figure 11 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the position of the positioning shaft relative to the positioning groove and the guide shaft relative to the guide groove;

[0048] Figure 12 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the position of the positioning shaft relative to the positioning groove and the guide shaft relative to the guide groove;

[0049] Figure 13 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the position of the positioning shaft relative to the positioning groove and the guide shaft relative to the guide groove;

[0050] Figure 14 The door of the refrigerator in the first embodiment of the present invention is opened to Schematic diagram of the position of the positioning shaft relative to the positioning groove and the guide shaft relative to the guide groove;

[0051] Figure 15 Schematic diagram of the movement of the roller along the convex curve in the first embodiment of the refrigerator of the present invention;

[0052] Figure 16 This is a schematic structural diagram of the track block in the second embodiment of the refrigerator of the present invention;

[0053] Figure 17 This is a schematic diagram of the exploded structure of the track block located at the end of the door body in the second embodiment of the refrigerator of the present invention;

[0054] Figure 18 This is a schematic diagram of the decomposed structure of the track block in the second embodiment of the refrigerator of the present invention;

[0055] Figure 19 This is a schematic diagram of the exploded structure of the mounting block at the end of the door body in the second embodiment of the refrigerator of the present invention;

[0056] Figure 20 This is a schematic structural diagram of a second embodiment of the refrigerator of the present invention when the mounting block is located in the door cavity;

[0057] Figure 21 Schematic diagram of the relative positions of the mounting block and the door end cover in the second embodiment of the refrigerator of the present invention;

[0058] Figure 22 This is a schematic structural diagram of the lower end of the door body in the second embodiment of the refrigerator of the present invention;

[0059] Figure 23 This is a schematic diagram of the exploded structure of the lower end of the door body and the locking block in the second embodiment of the refrigerator of the present invention;

[0060] Figure 24 Schematic diagram of the relative positions of the lower end of the door body, the locking block, and the hinge matched with the lower end of the door body in the second embodiment of the refrigerator of the present invention;

[0061] Figure 25 Schematic diagram of the cooperation between the locking block and the hinge when the door is in the closed state in the second embodiment of the refrigerator of the present invention;

[0062] Figure 26 The door of the refrigerator in the second embodiment of the present invention is opened to G B1 Schematic diagram of the relative positions of the locking block and the hinge;

[0063] Figure 27 The door of the refrigerator in the second embodiment of the present invention is opened to G B0 Schematic diagram of the locking block being separated from the hinge;

[0064] Figure 28 Schematic diagram of the relative positions of the locking block and the hinge when the door is opened to 90° in the second embodiment of the refrigerator of the present invention;

[0065] Figure 29 Schematic diagram of the relative positions of the flip beam and the refrigerator body when the door is opened in the third embodiment of the present invention;

[0066] Figure 30 The door of the refrigerator in the third embodiment of the present invention is closed to G S Schematic diagram of the relative positions of the door body, guide block and guide groove;

[0067] Figure 31 The door of the refrigerator in the third embodiment of the present invention is closed to G F Schematic diagram of the relative positions of the door body, guide block and guide groove;

[0068] Figure 32 G in the third embodiment of the refrigerator of the present invention B1 >G SA diagram illustrating the state of the lock hook and the stopper, the guide block and the guide groove;

[0069] Figure 33 G in the third embodiment of the refrigerator of the present invention B1 <G F A diagram illustrating the state of the lock hook and the stopper, the guide block and the guide groove;

[0070] Figure 34 G in the third embodiment of the refrigerator of the present invention B1 =G F The following figure illustrates the state of the lock hook and the stopper, the guide block and the guide groove.

[0071] In the above figures: box body 10; cabinet 100; door body 30; door front wall 31; door side wall 32; door rear wall 33; first side edge W; second side edge N; hinge plate 40; connecting portion 401; extending portion 402; stopping portion 403; hooking gap 404; first through hole 406; second through hole 407; positioning shaft 41; guide shaft 42; positioning center axis P; guide center axis Q; positioning groove 50; first trajectory line S; starting positioning point P0; first positioning point P1; second positioning point P2; third positioning point P3; fourth positioning point P4; Guide groove 60; second trajectory line K; starting guide point Q0; first guide point Q1; second guide point Q2; third guide point Q3; fourth guide point Q4; first protrusion 34; second protrusion 35; clearance groove 36; accommodating groove 37; door end cover 38; first through-hole 381; second through-hole 382; trajectory block 7; plate body 70; first ring plate 71; second ring plate 72; sealing gasket 11; mounting block 90; fixing plate 91; accommodating portion 39; locking hook 82; root connection portion 83; hook portion 84; flip beam 9; guide block 13; trajectory groove 14. DETAILED DESCRIPTION

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] Example 1

[0078] 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.

[0079] 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.

[0080] 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 of the storage chamber. Specifically, the door 30 is rotatably connected to the box body 10 via a hinge located at the top and a hinge located at the bottom.

[0081] The box body 10 includes a first side wall and a second side wall (i.e., the left side wall and the right side wall of the box body 10) that are arranged opposite to each other; the hinge is arranged on the box body 10 and close to the first side wall; the door body 30 has a door front wall 31 away from the box body 10 when the door body 30 is closed, a door rear wall 33 arranged opposite to the door front wall 31, and a door side wall 32 close to the hinge and connected to the door front wall 31; for example, when the hinge is located on the right side of the box body 10, the right side surface of the door body 30 is the door side wall 32; when the hinge is located on the left side of the box body 10, the left side surface of the door body 30 is the door side wall 32.

[0082] The door front wall 31 and the door side wall 32 of the door body 30 intersect to form a first side edge W, and the door side wall 32 intersects with the door rear wall 33 to form a second side edge 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 door front wall 31 and the door side wall 32 are both planes, the intersection line of the two planes is the theoretical first side edge W; during the specific processing setting, based on the setting of the rounded transition at the intersection of the door front wall 31 and the door side wall 32, a curved surface is formed; for the convenience of description in this application, a straight line on the curved surface extending along the length direction of the door body 30 and parallel to the theoretical first side edge W represents the first side edge W. In addition, the plane passing through the center of mass of the door body 30 and parallel to the door front wall 31 is recorded as the center of mass plane F; during the opening process of the door body 30, the center of mass plane F moves with the door body 30. In this embodiment, the center of mass plane F is determined by taking the geometric center of the door body 30 as the center of mass for description.

[0083] A door seal is provided on the rear wall 33 of the door body 30; when the door body 30 is closed, the door seal fits against the front end surface of the box body surrounding the access opening to effectively seal the connection between the door body 30 and the box body 10, thereby ensuring that the door body 30 seals the access opening to prevent cold air from overflowing.

[0084] Reference Figures 2 to 3 A positioning shaft 41 and a guide shaft 42 are provided at the end of the door body 30 close to the hinge, which is located on the side of the positioning shaft 41 away from the door front wall 31; a positioning groove 50 and a guide groove 60 are provided on the hinge; the positioning shaft 41 is adapted to the positioning groove 50, and the guide shaft 42 is adapted to the guide groove 60. When the door body 30 rotates to open or close, the positioning shaft 41 moves relative to the positioning groove 50, and the guide shaft 42 moves relative to the guide groove 60.

[0085] The hinge includes a hinge plate 40 fixedly connected to the housing 10. The hinge plate 40 includes a connecting portion 401 connected to the housing 10 and a horizontal, plate-shaped extension portion 402 extending forward from the connecting portion 401. The connecting portion 401 can be fastened to the top wall of the housing 10 using 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 housing 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 housing 10. The positioning groove 50 and the guide groove 60 are formed on the extension portion 402.

[0086] The positioning shaft 41 and the guide shaft 42 are connected to the end of the door body 30 near the hinge to form a limited axis for guiding the movement of the door body 30. Specifically, the positioning shaft 41 and the guide shaft 42 provided at the end of the door body 30 extend in the vertical direction to adapt to the positioning groove 50 or the guide groove 60 provided on the hinge.

[0087] In this embodiment, the hinge plates 40 at the upper and lower ends of the door body 30 are provided with positioning grooves 50 and guide grooves 60, and the positioning shafts 41 and guide shafts 42 are provided at the upper and lower ends of the door body 30. It should be noted that the configuration of this embodiment is not limited to being provided at both the upper and lower ends of the door body 30, and is provided as needed to connect the door body 30 and the box body 10.

[0088] In this embodiment, continue to refer to Figure 2 The plane of the side of the cabinet 10 near the hinge plate 40 (the first side wall) is defined as the reference plane M0. The refrigerator is housed in the cabinet 100. The side of the reference plane M0 near the cabinet 100 is the exterior, and the opposite side near the storage compartment is the interior. When the door 30 is closed, the door front wall 31 is flush with the front face of the cabinet 100 (including any case where the distance between the two planes is less than 2 mm). When the refrigerator is placed in the cabinet 100 for use, to prevent factors such as uneven flooring and deformation of the cabinet 100, the distance α between the cabinet 100 and the side of the refrigerator (the first side wall, i.e., the reference plane M0) can be set when the cabinet 100 is sized. α∈[3,5], unit: mm. To ensure that the refrigerator door 30 opens properly, the first side edge W of the door 30 cannot extend too far beyond the side of the cabinet 10 (the reference plane M0) during rotation to prevent the first side edge W from colliding with the cabinet 100 and preventing the door 30 from opening properly.

[0089] 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 does not extend too far beyond the side surface of the box body 10 (reference plane M0). Taking the hinge plate 40 as an example, which is located on the right side of the door body 30 (in this example, the right side wall of the box body 10 is the first side wall, which is the reference plane M0), 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, which is located on the left side of the door body 30, the inner side is the right side, that is, the door body 30 needs to be able to move to the right.

[0090] like Figure 3 As shown, in this embodiment, the positioning groove 50 includes a first groove section, a second groove section, a third groove section and a fourth groove section that are sequentially connected; wherein the first groove section, the second groove section, the third groove section and the fourth groove section are sequentially away from the side wall of the first body.

[0091] The center trajectory of the positioning groove 50 is denoted as the first trajectory S. Corresponding to the structural arrangement of the positioning groove 50 comprising four groove segments, the first trajectory S comprises a first trajectory segment, a second trajectory segment, a third trajectory segment, and a fourth trajectory segment, which are sequentially connected. The first trajectory segment is the center trajectory of the first groove segment, the second trajectory segment is the center trajectory of the second groove segment, the third trajectory segment is the center trajectory of the third groove segment, and the fourth trajectory segment is the center trajectory of the fourth groove segment.

[0092] In this embodiment, Figure 4 As shown, in the projection of the plane where the top wall of the box body 10 is located, the reference plane M0 is taken as the Y axis, and the straight line located on the front side of the hinge plate 40 and perpendicular to the reference plane M0 is recorded as the X axis (in this embodiment, when the door body 30 is closed, the plane passing through the first side edge W and parallel to the take-in and put-out port is taken as the X axis, that is, the plane where the door front wall 31 is located when the door body 30 is closed is taken as the X axis); the X axis is perpendicular to the Y axis and intersects at the origin O; the direction of the plane passing through the first side edge W and parallel to the take-in and put-out port when the door body 30 is closed pointing to the box body 10 is the positive direction of the Y axis, and the direction of the first body side wall pointing to the second body side wall is the positive direction of the X axis, forming a two-dimensional coordinate system XOY.

[0093] The function corresponding to the first trajectory line S in the coordinate system XOY is denoted as Y=F(X); Y=F(X) is a piecewise function, and the piecewise function is a continuous function; then at each segment point, its left limit is equal to its right limit; specifically,

[0094]

[0095] Among them, X4>X3>X2>X1>X0>0; F1(X1)=F2(X1), F2(X2)=F3(X2),

[0096] F3(X3)=F4(X3);

[0097] Y=F1(X) is the function of the first trajectory segment in the coordinate system XOY;

[0098] Y=F2(X) is the function of the second trajectory segment in the coordinate system XOY;

[0099] Y=F3(X) is the function of the third trajectory segment in the coordinate system XOY;

[0100] Y=F4(X) is a function of the fourth trajectory segment in the coordinate system XOY.

[0101] The slope of the first trajectory segment is denoted as F'1, the slope of the second trajectory segment is denoted as F'2, the slope of the third trajectory segment is denoted as F'3, and the slope of the fourth trajectory segment is denoted as F'4, where F'3 > F'1 > F'2 > 0 > F'4; and F'3 > |F'4| > F'1. The endpoint of the first trajectory segment close to the first body sidewall is denoted as the starting positioning point P0; the connection point between the first and second trajectory segments is denoted as the first positioning point P1; the connection point between the second and third trajectory segments is denoted as the second positioning point P2; the connection point between the third and fourth trajectory segments is denoted as the third positioning point P3; and the end of the fourth trajectory segment farthest from the third trajectory segment is denoted as the fourth positioning point P4. Correspondingly, in the coordinate system XOY, the coordinates of P0 are (X0, F1(X0)), the coordinates of P1 are (X1, F1(X1)), the coordinates of P2 are (X2, F2(X2)), the coordinates of P3 are (X3, F3(X3)), and the coordinates of P4 are (X4, F4(X4)).

[0102] That is, the first trajectory line S has a starting point P0, a first positioning point P1, a second positioning point P2, a third positioning point P3, and a fourth positioning point P4, which are sequentially located away from the first body sidewall. The first trajectory segment is denoted as P0P1, the second trajectory segment is denoted as P1P2, the third trajectory segment is denoted as P2P3, and the fourth trajectory segment is denoted as P3P4. That is, from the first body sidewall to the second body sidewall, the first trajectory line S first extends toward the access port to the third positioning point P3, and then extends away from the access port to the fourth positioning point P4. That is, from the first body sidewall to the second body sidewall, the first trajectory line S first extends toward the access port, and then extends away from the access port. Corresponding to the relationship between the slopes of the functions of each segment, for every unit increase in distance along the positive direction of the X-axis on the first trajectory line S, the distance of the third trajectory segment close to the access port > the distance of the first trajectory segment close to the access port > the distance of the second trajectory segment close to the access port > 0 > the distance of the fourth trajectory segment close to the access port, and the distance of the third trajectory segment close to the access port > the distance of the fourth trajectory segment away from the access port > the distance of the first trajectory segment close to the access port.

[0103] In summary, in this embodiment, the first trajectory line S first quickly approaches the pick-up and release port and extends to the first positioning point P1, then slowly approaches the pick-up and release port and extends to the second positioning point P2, then quickly approaches the pick-up and release port and extends to the third positioning point P3, and then quickly moves away from the pick-up and release port and extends to the fourth positioning point P4.

[0104] In this embodiment, the guide groove 60 is a curved groove; the guide groove 60 extends from one end close to the access port and the first body side wall to one end away from the access port and the first body side wall. The center trajectory line of the guide groove 60 is recorded as the second trajectory line K. In the XOY coordinate system, the function corresponding to the second trajectory line K is recorded as Y=G(X); in this embodiment, as X increases, Y=G(X) first increases and then decreases; in addition, G``(X)>0; that is, Y=G(X) is a convex function. Corresponding to the second trajectory line K, along the direction from the first body side wall to the second body side wall, the second trajectory line K first extends to the side close to the access port, and then extends to the side away from the access port; and the second trajectory line K convexly protrudes in the direction close to the access port; that is, the guide groove 60 convexly protrudes in the direction close to the access port.

[0105] In this embodiment, the guide shaft 42 is located on the side of the positioning shaft 41 close to the door rear wall 33 and the door side wall 32, and the positioning groove 50 is located on the side of the guide groove 60 away from the pick-up and release port and close to the first body side wall, so that the door body 30 can move a distance inward (in the direction close to the second body side wall) while rotating, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door body 30, so as to limit the distance that the first side edge W exceeds the reference plane M0, and effectively avoid interference between the door body 30 and the cabinet 100 when the door body 30 is opened.

[0106] Since the positioning groove 50 and the positioning shaft 41, as well as the guide groove 60 and the guide shaft 42, are in a relative motion relationship, if the door body 30 is opened, with the positioning groove 50 and the guide groove 60 as stationary reference objects, it is equivalent to the positioning shaft 41 moving within the positioning groove 50 and the guide shaft 42 moving within the guide groove 60. For the sake of convenience in description, this application uses the positioning groove 50 and the guide groove 60 as stationary reference objects, and the positioning shaft 41 and the guide shaft 42 move relative to the reference objects for explanation.

[0107] In this embodiment, the center axis of the positioning shaft 41 is recorded as the positioning center axis P, and the center axis of the guide shaft 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. Figure 5-Figure 14As shown, the movement of the positioning shaft 41 along the positioning slot 50 is equivalent to the movement of the positioning center axis P along the first trajectory S, and the movement of the guide shaft 42 along the guide slot 60 is equivalent to the movement of the guide center axis Q along the second trajectory K. This allows the door body 30 to 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, effectively preventing the door body 30 from interfering with the cabinet 100 when opening. Because the positioning shaft 41 and the guide shaft 42 are fixed to the door body 30, 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 within 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. Within the plane where the top wall of the cabinet 10 is located, the movement of the axis line segment PQ relative to the trajectory slot provided on the hinge is equivalent to the movement of the door body 30 relative to the hinge, and is also equivalent to the movement of the door body 30 relative to the cabinet 10.

[0108] In the following description, for the convenience of explanation, the movement of the axis line segment PQ relative to the track groove provided on the hinge in the plane where the top wall of the box body 10 is located is selected to represent the movement of the door body 30 relative to the box body 10.

[0109] like Figure 5 As shown, the distance between the starting positioning point P0 and the access port is recorded as D0, the distance between the third positioning point P3 and the access port is recorded as D3, and the distance between the fourth positioning point P4 and the access port is recorded as D4. In this embodiment, D0>D4>D3.

[0110] The second trajectory K includes a starting guide point Q0 proximate to the first body sidewall and a fourth guide point Q4 distal to the first body sidewall. The fourth guide point Q4 is located on the side of the starting guide point Q0 distal to the first body sidewall and the access opening. The second trajectory K extends along a curve from the starting guide point Q0 to the side distal to the first body sidewall to the fourth guide point Q4. As a configurable arrangement, the second trajectory K may first approach the access opening and then depart from the access opening as it extends from the starting guide point Q0 to the fourth guide point Q4.

[0111] Among them, the distance between the starting guide point Q0 and the pick-up and release port is recorded as Z0, and the distance between the fourth guide point Q4 and the pick-up and release port is recorded as Z4. As a configurable method, Z0<D4<D0<Z4. As another practicable method, the starting positioning point P0 is located on the side of the starting positioning point P0 close to the first body side wall and the pick-up and release port, and the fourth guide point Q4 is located on the side of the fourth positioning point P4 away from the first body side wall and the pick-up and release port. The above setting enables the guide groove 60 to effectively limit the movement of the guide shaft 42, so as to drive the positioning shaft 41 to move in the positioning groove 50, thereby causing the door body 30 to move inward a certain distance during the process of opening the door body 30, and ensuring the stability of the door body 30 rotating to open.

[0112] like Figure 5 As shown, in this embodiment, when the door body 30 is in the closed state, the center axis of the positioning shaft 41 (positioning center axis P) is located at the starting positioning point P0 of the first trajectory line S, and the center axis of the guide shaft 42 (guide center axis Q) is located at the starting guide point Q0 of the second trajectory line K. That is, when the door body 30 is in the closed state, the positioning shaft 41 is located on the side of the guide shaft 42 away from the first body side wall and the access opening.

[0113] In this embodiment, the maximum angle G of the refrigerator is opened. 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 positioning shaft 41 relative to the positioning groove 50 and the relative position of the guide shaft 42 relative to the guide groove 60 are specifically as follows:

[0114] 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;

[0115] like Figure 5 As shown, positioning center axis P is located at the starting positioning point P0 of the first trajectory line S, and the guide center axis Q is located at the starting guide point Q0 of the second trajectory line K.

[0116] like Figure 6 and Figure 11 As shown, , the door body 30 rotates and opens to G1; the positioning center axis P is located at the first positioning point P1 of the first trajectory line S, and the first positioning point P1 is located on the side of the starting positioning point P0 away from the first body side wall and close to the access port; wherein, the first positioning point P1 is the end point of the first trajectory segment away from the first body side wall; the guide center axis Q is located at the first guide point Q1 of the second trajectory line K, and the first guide point Q1 is located on the side of the starting guide point Q0 away from the first body side wall. G1∈[5°, 9°] can be set to any value. In this embodiment, the first guide point Q1 is located on the side of the starting guide point Q0 away from the first body side wall and close to the access port. As described above, in the process of the door body 30 opening from the closed state to G1, the positioning axis 41 moves along the first trajectory segment toward the side away from the first body side wall and close to the access port, and the guide axis 42 moves along the curve toward the direction away from the first body side wall and close to the access port.

[0117] like Figure 7 and Figure 12 As shown, , the door body 30 rotates and opens to G2; the positioning center axis P is located at the second positioning point P2 of the first trajectory line S, and the second positioning point P2 is located on the side of the first positioning point P1 away from the first body side wall and close to the access port; wherein, the second positioning point P2 is the end point of the second trajectory segment away from the first body side wall; the guide center axis Q is located at the second guide point Q2 of the second trajectory line K, and the second guide point Q2 is located on the side of the first guide point Q1 away from the first body side wall and the access port. G2∈[40°, 47°] can be set to any value. In the above, in the process of the door body 30 opening from G1 to G2, the positioning axis 41 moves along the second trajectory segment toward the side away from the first body side wall and close to the access port, and the guide axis 42 moves along the curve toward the direction away from the first body side wall. As a configurable method, the point at which the second trajectory line K is at the minimum distance from the pick-up and release port is located between the first guide point Q1 and the second guide point Q2. Therefore, in the process of the door body 30 opening from G1 to G2, the guide shaft 42 moves along the curve in the direction away from the side wall of the first body, and first approaches the pick-up and release port and then moves away from the pick-up and release port.

[0118] like Figure 8 and Figure 13 As shown, When the door 30 rotates and opens to G3, the positioning center axis P is located at the third positioning point P3 of the first trajectory line S, and the third positioning point P3 is located on the side of the second positioning point P2 away from the first body side wall and close to the access port. The third positioning point P3 is the endpoint of the third trajectory segment away from the first body side wall. The guide center axis Q is located at the third guide point Q3 of the second trajectory line K, and the third guide point Q3 is located on the side of the second guide point Q2 away from the first body side wall and the access port. G3 can be set to any value between [88°, 92°]. As described above, during the process of the door 30 opening from G2 to G3, the positioning axis 41 moves along the third trajectory segment toward the side away from the first body side wall and close to the access port, and the guide axis 42 moves along the curve in a direction away from the first body side wall and the access port. When the door is opened to the third angle G3, the coordinates of the center axis of the positioning axis 41 in the coordinate system XOY are (X3, F3(X3)).

[0119] like Figure 9 and Figure 14 As shown, When the door 30 rotates to open to G max The positioning center axis P is located at the fourth positioning point P4 of the first trajectory line S, and the fourth positioning point P4 is located on the side of the third positioning point P3 away from the first body side wall and the access port; wherein the fourth positioning point P4 is the end point of the fourth trajectory segment away from the first body side wall; the guiding center axis Q is located at the fourth guiding point Q4 of the second trajectory line K, and the fourth guiding point Q4 is located on the side of the third guiding point Q3 away from the first body side wall and the access port. G can be set max∈[1108°, 125°] any value. Above, the door 30 is opened from G3 to G max During the process, the positioning shaft 41 moves along the fourth track segment toward the side away from the first body side wall and the access opening, and the guide shaft 42 moves along the curve toward the direction away from the first body side wall and the access opening.

[0120] In this embodiment, 0°<G1<G2<G3<G max The starting positioning point P0, the first positioning point P1, the second positioning point P2, the third positioning point P3, and the fourth positioning point P4 are sequentially distributed along the first trajectory line S in a direction away from the first body sidewall. Furthermore, the starting positioning point P0, the first positioning point P1, the second positioning point P2, and the third positioning point P3 are distributed in a direction away from the first body sidewall and close to the access port, while the third positioning point P3 and the fourth positioning point P4 are distributed in a direction away from the first body sidewall and the access port.

[0121] The starting guide point Q0, the first guide point Q1, the second guide point Q2, the third guide point Q3, and the fourth guide point Q4 are sequentially distributed along the second trajectory line K in a direction away from the side wall of the first body. The starting guide point Q0 and the first guide point Q1 are distributed along the second trajectory line K in a direction close to the take-and-put port, and the second guide point Q2, the third guide point Q3, and the fourth guide point Q4 are distributed along the second trajectory line K in a direction away from the take-and-put port. In the above embodiment, G1, G2, G3, G4 max They are recorded as the first angle, the second angle, the third angle, and the maximum angle in sequence.

[0122] In the above embodiment, when the door 30 is opened to the maximum angle G max During the entire process of the door body 30 opening, the positioning shaft 41 always moves relative to the positioning groove 50 and moves unidirectionally in the direction away from the side wall of the first body; the guide shaft 42 always moves relative to the guide groove 60 and moves unidirectionally in the direction away from the side wall of the first body; that is, during the entire process of the door body 30 opening, the positioning shaft 41 and the guide shaft 42 maintain unidirectional movement without reversing direction, so that the force directions of the positioning shaft 41 and the guide shaft 42 during the door body 30 opening process are always consistent, which makes the door opening and closing feel good and improves the user experience; in addition, the service life of the positioning groove 50 and the guide groove 60 is prolonged. Furthermore, during the entire process of the door body 30 opening, the positioning shaft 41 and the guide shaft 42 maintain movement throughout the entire process, so that there is no acceleration of stopping and moving again during the entire opening process of the door body 30, and the movement of the door body 30 is more smooth.

[0123] Combined with the positions of the two limit shafts (positioning shaft 41 and guide shaft 42) relative to the track groove (positioning groove 50 and guide groove 60) when the door body 30 is opened to a specific angle, it can be seen that the matching relationship between the positioning shaft 41 and the positioning groove 50, and the guide shaft 42 and the guide groove 60 exists in the following conditions: in the process of the door body 30 opening from the closed state to G3, the positioning shaft 41 moves along the positioning groove 50 in the direction away from the side wall of the first body and close to the access port; when the door body 30 is opened from G3 to G max During the process, the positioning shaft 41 moves along the positioning groove 50 in a direction away from the side wall of the first body and the access opening. The following describes the relative movement of the two stages from the perspective of the matching relationship between the positioning shaft 41 and the positioning groove 50, and the guide shaft 42 and the guide groove 60:

[0124] The first stage, such as Figure 10 and Figure 13 As shown, the door body 30 rotates from the closed state to open to G3.

[0125] In this first stage, the door 30 opens from 0° through G1 and G2 to G3. During this process, the positioning center axis P moves from the starting positioning point P0 along the first trajectory S in a direction away from the first body sidewall and closer to the access port; the guide center axis Q moves from the starting guide point Q0 along the second trajectory K in a direction away from the first body sidewall.

[0126] Specifically, the positioning center axis P moves from the starting positioning point P0 along the first trajectory line S through the first positioning point P1 and the second positioning point P2 to the third positioning point P3; the guiding center axis Q moves from the starting guiding point Q0 along the second trajectory line K through the first guiding point Q1 and the second guiding point Q2 to the third guiding point Q3.

[0127] During the opening process of the first stage above, with the positioning groove 50 and the guide groove 60 as reference, when the door body 30 opens from 0° to G3, the axis line segment PQ rotates counterclockwise from P0Q0 and moves inward to P1Q1, P2Q2, and P3Q3 in sequence; that is, the movement trend of the axis line segment PQ is P0Q0→P1Q1→P2Q2→P3Q3. Since the positioning groove 50 and the guide groove 60 are set on the hinge fixed to the box body 10, the axis line segment PQ represents the movement of the door body 30; it can be concluded that: with the box body 10 as a reference, during the entire process of the door body 30 opening from the closed state to G3, the door body 30 keeps rotating counterclockwise relative to the box body 10 and moves inward. That is, the setting of this embodiment enables the door body 30 to open and move inward a certain distance at the same time, compensates for the outward displacement of the first side edge W caused by the simple rotation of the door body 30, and effectively avoids interference between the door body 30 and the cabinet 100.

[0128] In the above first stage of opening process, according to the changing trend of the movement trajectory of the positioning shaft 41 relative to the positioning groove 50, the first stage is divided into three opening segments; specifically, the first stage includes the first segment, the second segment and the third segment. The specific movement of each segment is as follows:

[0129] In the first segment, the door body 30 opens from the closed state to G1; during this process, the positioning center axis P moves from the starting positioning point P0 along the first track segment P0P1 of the first track line S in a direction away from the side wall of the first body and close to the access port.

[0130] In the second section, the door body 30 opens from G1 to G2. During this process, the positioning center axis P moves from the first positioning point P1 along the second track segment P1P2 of the first track line S in a direction away from the side wall of the first body and close to the access port.

[0131] In the third section, the door body 30 opens from G2 to G3; during this process, the positioning center axis P moves from the second positioning point P2 along the third track segment P2P3 of the first track line S in a direction away from the side wall of the first body and close to the access port.

[0132] In the XOY coordinate system, for each unit distance increase along the positive direction of the X axis on the first track line S, the distance of the third track segment close to the access port > the distance of the first track segment close to the access port > the distance of the second track segment close to the access port > 0.

[0133] The second stage, such as 10 and Figure 14 As shown, the door body 30 is rotated from G3 to G max process.

[0134] Door 30 opens from G3 to G max During this process, the positioning center axis P moves from the third positioning point P3 along the fourth track segment P3P4 of the first track line S in a direction away from the first body side wall and the access opening; the guiding center axis Q moves from the third guiding point Q3 along the second track line K in a direction away from the first body side wall and the access opening.

[0135] Specifically, the positioning center axis P moves from the third positioning point P3 to the fourth positioning point P4 along the fourth track segment P3P4 of the first track line S; the guiding center axis Q moves from the third guiding point Q3 to the fourth guiding point Q4 along the second track line K. In the above second stage of opening, with the positioning groove 50 and the guiding groove 60 as references, the door body 30 is opened from G3 to G4. maxWhen the axis line segment PQ rotates counterclockwise from P3Q3 and moves inward to P4Q4, the movement trend of the axis line segment PQ is P3Q3→P4Q4. Since the positioning groove 50 and the guide groove 60 are set on the hinge fixed to the box body 10, the axis line segment PQ represents the movement of the door body 30. It can be concluded that: with the box body 10 as a reference, the door body 30 opens from G3 to G4. max During the entire process, the door body 30 rotates counterclockwise relative to the cabinet 10 and moves inward. That is, the arrangement of this embodiment allows the door body 30 to move inward a certain distance while opening, compensating for the outward displacement of the first side edge W caused by the simple rotation of the door body 30, effectively preventing interference between the door body 30 and the cabinet 100.

[0136] In summary, the door 30 is opened from the closed state to the G max During the process, the door body 30 rotates around a dynamically changing point so that the door body 30 moves inward; in addition, with the box body 10 as a static reference, the door body 30 always has a tendency to move inward, so as to compensate for the outward displacement of the first side edge W caused by the simple rotation of the door body 30, and effectively avoid interference between the door body 30 and the cabinet 100 when it is opened.

[0137] In this embodiment, the position of the central axis of the positioning shaft 41 when the door body 30 is closed is recorded as the first initial position, and the position of the central axis of the guide shaft 42 is recorded as the second initial position; the door body 30 is opened from the closed state to the G max During the process, the door body 30 always moves inward relative to the first initial position. That is, with the positioning shaft 41 when the door body 30 is closed as a stationary reference, the door body 30 opens from the closed state to the G max During the process, the door body 30 always moves inward relative to the central axis of the positioning shaft 41 (or guide shaft 42) when the door body 30 is closed. max During the process, the distance between the positioning shaft 41 and the first initial position when the door body 30 is closed gradually increases. max During the process, the positioning shaft 41 always keeps moving in one direction relative to the box body 10.

[0138] In some embodiments of the present application, during the opening process of the door body 30 , the displacement of the positioning shaft 41 moving toward the access opening is a positive number, and the displacement of the positioning shaft 41 moving away from the access opening is a negative number.

[0139] During the process of the door body 30 opening from the closed state to G1, the displacement of the door body 30 relative to the box body 10 near the access opening (displacement generated along the Y-axis direction) per unit angle of rotation is recorded as ξ1; wherein ξ1>0.

[0140] During the process of the door body 30 opening from G1 to G2, the displacement of the door body 30 relative to the box body 10 near the access opening (displacement generated along the Y-axis direction) per unit angle of rotation is recorded as ξ2; wherein ξ2>0.

[0141] During the process of the door body 30 opening from G2 to G3, the displacement of the door body 30 relative to the box body 10 near the access opening (displacement generated along the Y-axis direction) per unit angle of rotation is recorded as ξ3; wherein ξ3>0.

[0142] Door 30 opens from G3 to G max During the process, the displacement of the door body 30 relative to the box body 10 away from the take-in and put-out opening per unit angle of rotation (displacement generated along the Y-axis direction) is recorded as ξ4, where ξ4<0.

[0143] Among them, ξ3<|ξ4|<ξ2<ξ1. That is, in the process of the door body 30 opening from the closed state to G3, the positioning shaft 41 approaches the placement port at different speeds relative to the positioning groove 40 in three stages, and 0<ξ3<ξ2<ξ1. The door body 30 opens from G3 to G max During the process, the door body 30 moves quickly to the side away from the loading and unloading port, and ξ3<|ξ4|<ξ2.

[0144] In some embodiments of the present application, a first mating portion is provided at one end of the hinge away from the first body side wall, and a second mating portion is provided at the lower end of the door body 30, the second mating portion being configured to cooperate with the first mating portion to achieve locking and unlocking of the door body 30 and the box body 10. Specifically, the first mating portion is a stopper provided on the side of the hinge away from the first body side wall, and the second mating portion is a hook provided on the door body 30.

[0145] In the process of the door body 30 opening from the closed state to G1, the first matching part and the second matching part are gradually separated; in this process, the door body 30 moves quickly to the side close to the take-in and put-out port to reduce the effect of the first matching part on the second matching part, reduce the deformation of the second matching part, and reduce the resistance to the separation of the first matching part and the second matching part, thereby accelerating the separation of the first matching part and the second matching part.

[0146] During the process of the door body 30 opening from G1 to G2, the displacement of the door body 30 relative to the box body 10 close to the take-in and put-out port decreases for each unit angle of rotation (ξ2<ξ1); this effectively avoids interference between the door side wall 33 and the box body 10 caused by the door side wall 33 rotating toward the side close to the take-in and put-out port during this process, thereby ensuring the effectiveness of the door body 30 rotating to open.

[0147] In the process of the door body 30 opening from G2 to G3 (G3 = 90°), the displacement of the door body 30 relative to the box body 10 close to the access port decreases (ξ3 < ξ2) per unit angle of rotation; in this process, the second side edge N rotates toward the side away from the access port, and the first side edge W is located on the side of the second side edge N away from the access port. In this stage, the door body 30 keeps moving a certain distance toward the side close to the access port, on the one hand, to prevent the door body 30 from separating too much from the box body 10 and increasing the instability of the door body 30 opening. On the other hand, to prevent the door body 30 from being too close to the access port, which will cause the maximum angle G of the door body 30 to open. max The size is limited by cabinet 100.

[0148] When the door 30 is opened from G3 (G3 = 90°) to G max During the process, the door body 30 moves quickly to the side away from the access port (ξ3<|ξ4|) to increase the distance between the door body 30 and the box body 10, thereby reducing the restriction of the cabinet 100 on the opening angle of the door body 30, effectively increasing the maximum opening angle of the door body 30, and making it easier for users to take things.

[0149] When the door body 30 is installed in the cabinet 100, the door body 30 is rotated from 90° to the maximum angle G max During the opening process, assuming that the door body 30 performs a simple rotational motion with the central axis of the fixed main hinge axis 41 as the rotation axis, the maximum angle that the door body 30 can open is G' due to the restriction of the cabinet 100. max .

[0150] In this embodiment, when the door body 30 is opened to 90°, the door side wall 32 is parallel to the plane where the access port is located (approximately parallel, and the angle between the two planes is less than 3°), and the door front wall 31 is parallel to the reference plane M0 (approximately parallel, and the angle between the two planes is less than 3°). max During the process of continuing to open, the main hinge axis 41 moves in the direction away from the first body side wall and the access opening, that is, the door body 30 has a tendency to move inward and forward, that is, the door body 30 moves in the direction away from the cabinet 100 and the box body 10; when the refrigerator is installed in the cabinet 100, due to the limitation of the cabinet 100, the maximum angle that the door body 30 can open is recorded as G max The arrangement of this embodiment makes the door body 30 turn from 90° to the maximum angle G max The door 39 is moved inward and forward during the process to reduce the restriction of the cabinet 100 on the door 39 so that the maximum angle G that the door 30 can open is max Bigger; that is, G max >G` max .

[0151] In some embodiments of the present application, when the door body 30 is opened from the closed state to G2, the door body 30 moves inward (on the X axis) by a distance of δ1 per unit angle of rotation.

[0152] When the door 30 is opened from G2 to G max During the process, the distance the door body 30 moves inward (X-axis) for each unit angle of rotation is δ2. Among them, δ1>δ2. With the above arrangement, the distance the door body 30 moves inward for each single angle of opening in the initial stage of the door body 30 opening is large, which can quickly and sufficiently compensate for the outward lateral displacement of the first side edge W caused by the rotation in the early stage of the door body 30 opening, thereby limiting the distance that the first side edge W exceeds the reference plane M0 to a range that avoids interference between the first side edge W and the cabinet 100. In addition, in the early stage of the door body 30 opening, the positioning axis 41 quickly moves away from the side wall of the first body, so that the door seal is quickly separated from the front end face of the box body 10, effectively reducing the extrusion of the door seal.

[0153] As another setting method, G2∈[40°, 47°] is any value.

[0154] It should be noted that the present application is not limited to the configuration in which the hinge plates 40 at the upper and lower ends of the door body 30 are provided with positioning grooves 50 and guide grooves 60, and the positioning shafts 41 and guide shafts 42 are provided at the upper and lower ends of the door body 30. This configuration is applicable to either the upper or lower end of the door body 30.

[0155] As an practicable manner, a positioning groove 50 and a guide groove 60 are provided on one of the upper and lower ends of the door body 30, and a positioning shaft 41 and a guide shaft 42 are provided on the other end; correspondingly, the positioning shaft 41 and the guide shaft 42 that cooperate with the positioning groove 50 and the guide groove 60 on the door body 30 are formed on the hinge adjacent to the end of the door body 30; and the positioning groove 50 and the guide groove 60 that cooperate with the positioning shaft 41 and the guide shaft 42 on the door body 30 are formed on the hinge adjacent to the end of the door body 30.

[0156] As another feasible method, a positioning groove 50 and a guide groove 60 are provided on one of the upper and lower ends of the door body 30, and a positioning shaft 41 and a guide groove 60 are provided on the other end; correspondingly, the positioning shaft 41 and the guide shaft 42 that cooperate with the positioning groove 50 and the guide groove 60 on the door body 30 are formed on the hinge adjacent to the end of the door body 30; and the positioning groove 50 and the guide shaft 42 that cooperate with the positioning shaft 41 and the guide groove 60 on the door body 30 are formed on the hinge adjacent to the end of the door body 30.

[0157] In some embodiments of the present application, Figure 5-Figure 9 As shown, the door body 30 rotates from the closed state to the maximum angle G maxDuring the whole process, the center of mass plane F is located between the main hinge axis 41 and the auxiliary hinge axis 42. That is, the door body 30 is located between the main hinge axis 41 and the auxiliary hinge axis 42 during the whole opening process (0°~G max ), the center of mass plane F is always located between the main hinge axis 41 and the auxiliary hinge axis 42, the door body 30 is better stressed, and the door body 30 opens more stably.

[0158] The midpoint of the axis line segment PQ is recorded as the axis center point E; the distance between the axis center point E and the centroid plane F is recorded as the offset distance I; when the axis center point E is located on the side of the centroid plane F close to the door rear wall 33, the offset distance I is a positive number; correspondingly, when the axis center point E is located on the side of the centroid plane F close to the door front wall 31, the offset distance I is a negative number; when the axis center point E is located on the centroid plane F, the offset distance I is 0;

[0159] In this embodiment, the door body 30 is opened from the closed state to the maximum angle G max During the process, when the door body 30 is opened to different angles, the absolute value of the difference between the offset distances I at any two opening angles is recorded as the offset difference ΔI. When the offset distance I remains unchanged, the offset differences ΔI are all 0; when the offset distance I changes within a small range, the offset differences ΔI are not all 0, and can be set to offset difference ΔI∈[0,3], unit: mm; that is, when the offset distance I changes within a small range, the maximum value of the offset difference ΔI is not greater than 3mm. That is, when the door body is opened to the angle G i and G j When, ΔI=|I Gi -I Gj |∈[0, 3], unit: mm; where G i ≠G j ; G i ∈[0,G max ], G j ∈[0,G max ] any value.

[0160] Specifically, Figure 5-Figure 9 As shown, when the door body 30 is closed, the displacement angle is recorded as I0; when the door body 30 is opened to G0, G1, G2, G3, G max , the displacement angles are recorded as I0, I1, I2, I3, and I4 respectively; where ΔI=|I m -I n |∈[0, 4], unit: mm; where m≠n, and both m and n are integers; m∈[0, 4], n∈[0, 4]. Optional. In this embodiment, ΔI∈[0, 0.2], unit: mm.

[0161] In this embodiment, I1, I2, I3, I4, and I5 are all within the range of 0.4 mm to 0.6 mm, and the difference between any two offset distances is no greater than 0.2 mm. That is, the door body 30 rotates from the closed state to the maximum opening angle G max During the process, the offset distance I between the axis center E and the centroid plane F is approximately 0; that is, the centroid plane F always approximately passes through the axis center E.

[0162] In this embodiment, the door body 30 rotates from the closed state to open the maximum angle G max During the process, the offset distance I between the axis center point E and the center of mass plane F remains relatively constant; that is, the door body 30 rotates from the closed state to the maximum angle G max During the process, the offset distance I between the axis center point E and the center of mass plane F fluctuates within a small range. Specifically, in this embodiment, the door body 30 rotates from the closed state to the maximum angle G max During the process, the maximum change in the offset distance I between the center point E of the axis and the center of mass plane F is less than 3 mm.

[0163] During the process of opening the door body 30 from the closed state, as the opening angle increases, the torque of the door body 30 increases, the stability of the door body 30 deteriorates, and it is easy to shake. In this embodiment, the door body 30 is opened from the closed state to the G max During the entire process of opening the door body 30 (not less than 90°), the offset distance I between the center point E of the axis and the center of mass plane F remains relatively constant (the maximum change is less than 3mm), that is, during the entire opening process of the door body 30, the center of mass plane F is near the midpoint of the axis line segment PQ, effectively enhancing the stability of the door body 30 during the entire opening process.

[0164] In some embodiments of the present application, the guide groove 60 is configured as a regular curve groove. Figure 3 、 Figure 5-Figure 15 Specifically, in this embodiment, the second trajectory line K is a smooth curve. Correspondingly, the curved groove wall of the guide groove 60 is also a smooth curve.

[0165] The above arrangement allows the guide shaft 42 to move smoothly relative to the guide slot 60, thereby ensuring smoother opening of the door 30. This embodiment improves the smoothness of the hinge shaft's movement relative to the track slot, extending the life of the hinge shaft. Furthermore, during the opening of the door 30, the guide shaft 42 moves continuously and uninterrupted throughout its entire movement relative to the guide slot 60.

[0166] In this embodiment, the movement of the guide shaft 42 relative to the guide groove 60 is actually the movement of the roller relative to the cam. For a roller follower cam mechanism, the size of the roller radius often affects the shape of the actual cam profile curve, so the roller radius must be reasonably selected.

[0167] Where, 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.

[0168] like Figure 15 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.

[0169] When the cam theoretical profile curve is a convex curve, then ρ=ρ′-r T :

[0170] (1) Figure 15 As shown in b), when ρ min >r T ,ρ′>0, then the actual contour curve is a smooth curve;

[0171] (2) Figure 15 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;

[0172] (3) Figure 15 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.

[0173] 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.

[0174] Therefore, in this embodiment, the second trajectory line K corresponds to the cam theoretical profile curve of the guide groove 60. In this embodiment, the cam theoretical profile curve is an outward convex curve (the guide groove convexly extends away from the door front wall); the curved groove wall of the guide groove 60 close to the door front wall 31 is the actual profile curve; the radius of the guide shaft 42 also satisfies r T The size of satisfies the setting (1) (ρ min >r T) to ensure that the curved groove wall of the guide groove 60 near the door front wall 31 is a smooth curve. This not only allows for smooth movement of the positioning shaft 41, but also reduces wear on the guide groove 60. In other words, the guide groove 60 is essentially configured as a cam, effectively avoiding the wear defects caused by a concave structure. In summary, in this embodiment, the second trajectory line K is configured as a convex cam curve.

[0175] Example 2

[0176] The principle of the second embodiment is the same as that of the first embodiment; the second embodiment limits the arrangement of the positioning groove 50 and the guide groove 60 on the hinge.

[0177] Specifically, refer to Figures 16 to 28 A track block 7 is fixed on the hinge. The track block 7 is formed separately and installed on the extension portion 402. The positioning groove 50 and the guide groove 60 are formed on the track block 7.

[0178] Specific reference Figures 16 to 18 In this embodiment, the track block 7 disposed on the hinge plate 40 corresponding to the upper end of the door body 30 is used as an example for explanation. The positioning groove 50 includes a groove bottom and a circumferential groove wall surrounding the edge of the groove bottom; the circumferential groove wall encloses a notch disposed opposite the groove bottom. The structure of the guide groove 60 is the same as that of the positioning groove 50, and it also has a groove bottom, a circumferential groove wall, and a notch; the difference between the guide groove 60 and the positioning groove 50 lies in the different shapes and positions of the grooves. The track block 7 includes a plate body 70, and the positioning groove 50 and the guide groove 60 are disposed on the plate body 70.

[0179] The hinge plate 40 is provided with a first through-hole 406 and a second through-hole 407. The shape of the first through-hole 406 corresponds to the notch of the positioning slot 50, and the shape of the second through-hole 407 corresponds to the notch of the guide slot 60. The track block 7 is mounted on the side of the hinge plate 40 away from the door body 30. Specifically, the plate 70 of the track block 7 mates with the extension 402 and is secured to the extension 402 via a first fixing member. The notch of the positioning slot 50 corresponds to the first through-hole 406, and the notch of the guide slot 60 corresponds to the second through-hole 407. In this embodiment, the first fixing member is configured as a screw, etc.

[0180] As a configuration, the positioning groove 50 includes a first ring plate 71 located on the side of the plate body 70 away from the bottom of the positioning groove 50, defining the notch of the positioning groove 50. The guide groove 60 includes a second ring plate 72 located on the side of the plate body 70 away from the bottom of the guide groove 60, defining the notch of the guide groove 60. The first ring plate 71 is installed in the first through hole 406, and the second ring plate 72 is installed in the second through hole 407. The plate body 70 cooperates with the hinge plate 402. The above configuration enables precise positioning and facilitates quick assembly.

[0181] As a configuration, a sealing gasket 11 is provided between the plate body 70 and the hinge plate 40. The sealing gasket 11 is used to seal the connection between the track block 7 and the hinge plate 40, effectively preventing dust from accumulating in the gap between the track block 7 and the hinge plate 40. The first ring plate 71 and the second ring plate 72 both pass through the sealing gasket 11 to effectively secure the sealing gasket 11.

[0182] As described above, in this embodiment, the slots of the positioning groove 50 and the guide groove 60 are both facing downward, which can prevent dust from falling into the slots, effectively ensure the cleanliness of the positioning groove 50 and the guide groove 60, and avoid the movement of the limiting shaft matched therewith due to dust accumulated in the slots, thereby effectively ensuring the long-term smoothness of the opening of the door body 30.

[0183] In some embodiments of the present application, a mounting block 90 is installed on the door body 30 ; the mounting block 90 is integrally formed and installed at the ends of the door body 30 corresponding to the hinge plate 40 , and the positioning shaft 41 and the guide shaft 42 are formed on the mounting block 90 .

[0184] Specifically, refer to Figures 19-21 In this embodiment, the mounting block 90 disposed at the upper end of the door body 30 is used as an example for description. In this embodiment, the mounting block 90 includes a fixing plate 91, a positioning shaft 41 formed on the fixing plate 91, and a guide shaft 42. In this embodiment, the mounting block 90 is integrally formed; that is, the fixing plate 91, the positioning shaft 41, and the guide shaft 42 are integrally formed.

[0185] The door body 30 includes a door end cover 38 near the hinge; a receiving groove 37 is formed on the side of the door end cover 38 away from the hinge, and a first through-hole 381 and a second through-hole 382 are formed on the door end cover 38 near the hinge, which communicate with the receiving groove. The mounting block 90 is mounted on the side of the door end cover 38 away from the hinge, and the fixing plate 91 is received in the receiving groove 37. That is, the mounting block 90 is mounted in the inner cavity of the door body 30. Specifically, the fixing plate 91 of the mounting block 90 cooperates with the groove wall of the receiving groove on the door end cover 38 near the hinge, the positioning shaft 41 passes through the first through-hole 381 and cooperates with the positioning groove 50, and the guide shaft 42 passes through the second through-hole 382 and cooperates with the guide groove 60.

[0186] When preparing the door body 30, first, the positioning shaft 41 of the mounting block 90 is passed through the first through-hole 381, the guide shaft 42 is passed through the second through-hole 382, ​​and the fixing plate 91 is installed in the receiving groove 37. When the door body 30 is foamed, the foamed particles fill the inner cavity of the door body 30 and effectively fix the mounting block 90. ​​The above-mentioned assembly method of the mounting block 90 and the door body 30 in this embodiment allows the mounting block 90 to be hidden inside the door body 30, improving the aesthetics of the door body 30. It also reduces the number of gaps between the upper end of the door body 30 and the mounting block 90, reducing the amount of dust trapped in the gaps and effectively maintaining the long-term cleanliness of the mounting block 90.

[0187] In some embodiments of the present application, a first mating portion is provided at one end of the hinge away from the side wall of the first body, and a second mating portion is provided at the lower end of the door body 30, which is used to cooperate with the first mating portion to achieve locking and unlocking of the door body 30 and the box body 10.

[0188] As a configurable method, the second matching portion is provided on the locking block at the lower end of the door body 30. Figure 22-Figure 28 As shown, the locking block provided at the lower end of the door body 30 is used as an example for description. Specifically, the second mating portion on the locking block is configured as a locking structure, specifically, the second mating portion includes a locking hook 82. The locking hook 82 extends away from the door side wall 32 and bends toward the side close to the door rear wall 33 and the door side wall 32. The opening of the locking hook 82 faces the door side wall 32, and the free end of the locking hook 82 is located on the side close to the door rear wall 33.

[0189] Specifically, the door end cover 38 located at the lower end of the door body 30 is provided with a receiving portion 39 located on the side of the first through-hole 381 and the second through-hole 382 away from the door side wall 32. The locking block is inserted into the receiving portion 39 and then fastened to the door body 30 by screws or the like.

[0190] Specifically, the lock hook 82 includes a root connection portion 83 and a hook portion 84. The root connection portion 83 is connected to the receiving portion 39 formed on the side of the door end cover 38 close to the hinge and located on the side of the first through-hole 381 and the second through-hole 382 away from the door side wall 32. The hook portion 84 is connected to the root connection portion 83 and bends toward the side close to the door rear wall 33 and the door side wall 32. Screws are passed through the root connection portion 83 to connect it to the door body 30 to strengthen the connection strength between the root connection portion 83 and the door body 30, so that when the lock hook 82 disengages from the stop portion 403, only the hook portion 84 is deformed. It should be noted that the locking block of this embodiment is installed on the side of the door end cover 38 close to the hinge, that is, the locking block is fixedly installed on the outside of the door body 30.

[0191] A first mating portion, located on the side of the hinge plate 40 away from the first body sidewall, is provided as a stopper 403. The stopper 403 and the hinge connection portion 401 together define a hooking gap 404; that is, the hooking gap 404 is located on the side of the stopper 403 that is closer to the refrigerator body. When the door 30 is closed, the free end of the lock hook 82 is received within the hooking gap 404, and the stopper 403 is located within the lock hook 82. The lock hook 82 on the door 30 hooks onto the stopper 403 on the hinge plate 40, thereby locking the door 30 and preventing the door 30 from being loosely closed and affecting the refrigeration and freezing performance of the refrigerator. When the door 30 is opened, the lock hook 82 is deformed by the force, overcoming the obstruction of the stopper 403 and disengaging from the stopper 403.

[0192] As a configurable manner, the free ends of the hook portion 84 and the stop portion 403 are both arc-shaped, which helps the hook portion 84 to hook onto the stop portion 403 or detach from the stop portion 403 more smoothly along the arc.

[0193] When the door body 30 is closed from an open state, as the door body 30 rotates to close, the free end of the hook portion 84 gradually approaches the stop portion 403. When the hook portion 84 abuts against the stop portion 403, the door body 10 continues to close. Under the action of the stop portion 403, the hook portion 84 is deformed, the stop portion 403 enters the hook portion 84, and the free end of the hook portion 84 enters the hook gap 404; the lock hook 82 is locked with the hinge plate 40 to achieve the locking of the door body 30 and the box body 10.

[0194] When the door body 30 is opened from a closed state, the process is opposite to the process of closing the door body, and will not be described in detail here. When the above door body 30 is closed from an open state to a set angle (set to 7° in this embodiment), the hook portion 84 releases elastic energy, and the door body 30 automatically closes under the action of the hook portion 84 and the stop portion 403. As an implementable method, when the door body 30 is opened from a closed state to a set unlocking angle (set to 5° to 8° in this embodiment), the hook portion 84 is separated from the stop portion 403. It is set under a setting with the trajectory characteristics of embodiment 1. In the initial stage of opening of the door body 30, the rotational motion is mainly used, which facilitates the rapid separation of the lock hook 82 and the stop portion 403, and facilitates the rapid opening of the door body 30.

[0195] In some embodiments, the door body 30 may be provided with a first protrusion 34 and a second protrusion 35, which together define a clearance groove 36. The first protrusion 34 is generally located on the side of the second protrusion 35 that is closer to the door front wall 31 and the door side wall 32. A plug-in plate is formed at the root joint 83, and the plug-in plate is plugged into the clearance groove 36. In this way, the first protrusion 34 and the second protrusion 35 prevent the root joint 83 from deforming along the direction from the door front wall 31 to the door rear wall 33 by limiting the position.

[0196] Specifically, the plug plate is configured as an arc-shaped plate; the second protrusion 35 is also an arc-shaped plate; the edge of the first protrusion 34 adjacent to the second protrusion 35 is consistent with the shape of the second protrusion 35; the first protrusion 34 and the second protrusion 35 together define an arc-shaped gap groove 36; the arc-shaped plug plate cooperates with the arc-shaped gap groove 36. This arc-shaped configuration increases the area defined by the gap groove 36 on the root joint 83, increases the connection strength between the locking block and the door body 30, and effectively limits the deformation of the root joint 83.

[0197] In addition, the locking block can be made of POM material, which has strong friction resistance and can increase service life.

[0198] In some embodiments of the present application, a limiting structure is provided between the door body 30 and the hinge plate 40 for limiting the door body 30 from opening to a maximum angle, so as to avoid damage to the track block 7 when the door is opened forcefully to a certain angle.

[0199] Specifically, a limit portion is provided at the lower end of the door body 30, and the limit portion is located at the front end of the locking block provided at the lower end of the door body 30; the hinge plate 40 is away from one end of the box body 10 and close to the side wall of the first body to form a limit surface. When the door body 30 rotates to the maximum position allowed (door body opening angle G max ), the stopper abuts against the stopper surface of the hinge plate 40, thereby preventing further rotation of the door body 30. Specifically, when the positioning center axis P moves to the fourth positioning point P4 and the guide center axis Q moves to the fourth guide point Q4, the stopper at the lower end of the door body 30 abuts against the stopper surface of the hinge plate 40. This prevents wear and tear between the guide shaft 42 and the end of the guide groove 60 near the door sidewall 32 when the door body 30 is opened to its maximum angle.

[0200] In this embodiment, the limiting portion includes an embedding portion and a limiting strip. The limiting portion can be a sheet metal part.

[0201] The embedded portion is plate-shaped and is installed in the receiving groove 37 at the lower end of the door body 30. The root connection portion 83 of the locking block clamps the embedded portion on the door body 30 from the lower end, thereby fixing the limiting portion on the door body 30.

[0202] The limit strip is in the shape of a convex strip, and is formed by the edge of the embedded part close to the door front wall 31 extending downward from the lower surface of the door body 30. Therefore, when the door body 30 drives the limit part to rotate to the maximum angle, the limit strip will be blocked by the limit surface of the hinge plate 40, thereby forcing the door body 30 to stop opening.

[0203] The limiting portion is clamped on the door body 30 by the locking block, omitting the connection structure between the limiting portion and the door body 30, simplifying the product structure, and having the advantage of simple structure.

[0204] It should be noted that the limiting portion may also be provided at the upper end of the door body 30 , which will not be described in detail here.

[0205] Example 3

[0206] In this embodiment, Figure 29 As shown, the refrigerator includes two opposing doors 30 that cooperate to open and close the access opening. When the doors 30 are closed, a flip beam 9 is provided on the inner lining of one door 30, on the side closest to the other door 30. A track groove 14 is provided on the top wall of the refrigerator's storage compartment. The flip beam 9 slidably engages with the track groove 14 to enable the flip beam 9 to be adjusted to different angles relative to the doors 30. When the doors 30 are closed, the flip beam 9 closes the gap between the two doors 30 and the refrigerator body 10, effectively preventing cold air from escaping.

[0207] Specifically, the flip beam 9 includes a door hinge rear cover, which is connected to the door body 30 via a first door hinge and a second door hinge. The door hinge rear cover is elastically connected to the two door hinges using torsion springs. The first door hinge is located above the second door hinge. A guide block 13 is fixed to the top of the door hinge rear cover. This guide block 13 serves as a rotating component for the flip beam 9 and cooperates with a track groove 14 to enable the flip beam 9 to switch to different angles relative to the door body 30.

[0208] The door hinges and the door beam rear cover both have through-holes for torsion spring levers. Torsion springs connect the upper and lower door hinges to the door beam rear cover. Specifically, the first door hinge is connected to the door beam rear cover via a first torsion spring, while the second door hinge is connected to the door beam rear cover via a second torsion spring. As the tilt beam 9 rotates about the door hinge, the first and second torsion springs store and release elastic energy, ensuring stable rotation and timely reset of the door beam rear cover.

[0209] When the door body 30 is open, the flip beam 9 is tightly attached to the side of the door hinge fixed to the inner lining of the door body 30 due to the torsion force of the torsion springs (the first torsion spring and the second torsion spring).

[0210] In the present invention, a positioning shaft 41 and a guide shaft 42 are set on the hinge, and a positioning groove 50 that cooperates with the positioning shaft 41 and a guide groove 60 that cooperates with the guide shaft are set at the end of the door body 30; during the closing process of the door body 30, the two hinge shafts move in the corresponding track grooves, and the door body 30 moves outward a certain distance in the horizontal direction relative to the hinge; so that the force that causes the flip beam 9 on the door body 30 to flip will be partially offset as the door body 30 moves outward while closing, resulting in the guide block 13 on the top of the rotating beam entering the track groove on the box body and failing to effectively complete the flip and being stuck, thereby causing the door body 30 with the rotating beam to be unable to close in place, resulting in failure of low-temperature storage in the refrigerator.

[0211] like Figure 30-Figure 31 As shown, when the door body 30 is closed from the open state, a closing force F is first applied to the door body 30. W , under external force (closing force F W ) under the action of the door body 30 gradually closes, and the door body 30 closes to G S When the top guide block 13 of the flip beam 9 contacts the track groove 14, the door body 30 closes and reaches a certain angle G. S After that, the guide block 13 at the top of the flip beam 9 enters the track groove 14. When the door continues to close, the guide block 13 begins to flip due to the pressure of the track groove 14 wall. The torsion spring is compressed in the radial direction. When the flip beam 9 flips over G' F, reaching the critical value of the torsion spring. After that, the torsion spring begins to stretch, and together with the pressure of the track groove 14 wall, the flip beam 9 quickly flips into place until the door body 30 is closed. At this time, the torsion spring torque is released and reaches a relaxed state again. After the door body 30 is closed, the flip beam 9 contacts the seal provided on the door body 30, effectively preventing the cold air from escaping from the gap between the two double-door openings. The above corresponds to the flip beam 9 flipping to G' F , the door body closes at an angle of 30° to G F Among them, G S >G F As a configurable method, G` F =45°, that is, when the flip beam 9 flips over 45°, the torsion spring critical value is reached. As a configurable method, G S Set to any value between 6° and 12°, G F Set to any value between 3° and 5°; the door body 30 is closed and reaches G F After that, the turning beam 9 turns over automatically. F In the final stage, the torsion spring stretches and releases the torque. The torque released by the torsion spring in this stage is recorded as the flipping force F N , the flip beam 9 is under the flip force F N Flip into place under the action.

[0212] It should be noted that during the above turning process of the turning beam 9, the closing force F W Continue until the door 30 is closed to G F After the door body 30 rotates and closes to the critical point of the torsion spring, the closing force F is removed. W , the flip beam 9 can automatically complete the flip.

[0213] From the above, it can be seen that the door body 30 is made of G S Close to G F During the process, the torsion spring is compressed, and the closing force F W Under the combined effect of the pressure of the track groove 14 and the wall pressure, the hook portion 84 undergoes elastic deformation; F In the closing stage, the turning beam 9 generates the turning force F N The turning is completed under the combined action of the pressure of the groove wall of the track groove 14.

[0214] Combined with the setting of the locking structure in the sixth or ninth embodiment, combined with Figure 25-27 As shown, when the door body 30 is closed from the open state, a closing force F is first applied to the door body 30. W , the closing force F W Under the action, the door body 30 gradually closes; as the door body 30 rotates and closes, the free end of the hook portion 84 gradually approaches the stop portion 403; when the door body 30 is closed to G B0When the door is closed, the hook portion 84 contacts the stopper portion 403; W Under the action, the door body 10 continues to close, the stopper 403 interacts with the hook portion 84, and the hook portion 84 elastically deforms. W , the stopper 403 acts together, the movable hook portion 82 gradually enters the hook gap 404 (ie, the stopper 403 enters the hook portion 84); when the door body 30 is closed to G B1 When the elastic deformation of the hook portion 84 reaches the maximum deformation during the closing process of the door body 30, the door body 30 is closed. B1 After that, the elastic energy stored in the early deformation of the hook portion 82 is released, and the hook portion 82 recovers to the relaxed state together with the force of the stop portion 403, and drives the hook portion 82 to further enter the hook gap 404, so that the door body 30 is quickly and automatically closed in place until the door body 30 is closed and the lock hook 82 is locked with the hinge plate 40, thereby achieving the locking of the door body 30 and the box body 10; above, G B0 >G B1 As a configurable method, G B0 Set to any value between 15° and 20°, G B1 Set to any value between 3° and 8°; the door body 30 is closed and reaches G B1 After that, the door body 30 automatically closes. B1 In the latter stage, the hook portion 82 releases its elastic energy. The force released by the hook portion 82 in this stage is recorded as the locking force F. S , locking force F S The door body 30 is forced to close in place.

[0215] It should be noted that during the closing process of the door body 30, the closing force F W Continue until the door 30 is closed to G B1 After the door body 30 rotates and closes until the elastic deformation of the hook portion 82 is the maximum, the closing force F is removed. W , the door body 30 can automatically complete the flip. B1 Retract the closing force F W , the door body 30 has an inertial force F G , so that the door body 30 maintains its original closing movement trend.

[0216] From the above, it can be seen that the door body 30 is made of G B0 Close to G B1 In the process of closing the door, the force F W Under the combined action of the stopper 403, the hook portion 84 is elastically deformed; when the door body 30 is closed to G B1 When the hook portion 84 undergoes elastic deformation, the amount of deformation reaches the maximum amount of deformation during the closing process of the door body 30;B1 In the process of closing, the elastic force of the hook portion 82 is released, and the locking force F S , the elastic force of the hook portion 82 and the force of the stopper 403, the inertial force F G Under the combined effect of , the door body 30 closes quickly.

[0217] The above describes the door closing process when the rotating beam or the hook portion 82 is provided on the door body 30 alone; the above describes the door closing process when both the rotating beam and the hook portion 82 are provided on the door body 30.

[0218] like Figure 32 As shown, as a configurable method, G B1 >G S , that is, the door body 30 is closed to G B1 When the elastic deformation of the hook portion 84 reaches its maximum value (when the elastic energy is maximum), the guide block 13 at the top of the flip beam 9 has not yet contacted the track groove 14;

[0219] In this embodiment, the door closing force F W From start to close, continue to G B1 ; That is, the door 30 is closed to G B1 After that, remove the closing force F W , the user does not need to apply external force to complete the automatic closing of the door body 30.

[0220] In the door body 30 by G B1 Continue closing to G S When the top guide block 13 of the flip beam 9 contacts the track groove 14;

[0221] In the door body 30 by G S Continue closing to G F During the process, the door body 30 is under the locking force F S , the elastic force of the hook portion 82 and the force of the stopper 403, the inertial force F G Under the joint action of the closing, the flip beam 9 is closed under the locking force F S , inertial force F G , under the combined action of the pressure of the groove wall of the track groove 14, it begins to turn over, and the torsion spring is compressed in the radial direction;

[0222] In the door body 30 by G F During the process of continuing to close, the door body 30 is under the locking force F S , the elastic force of the hook portion 82 and the force of the stopper 403, the inertial force F G Under the joint action of the locking force F S , flipping force F N , inertial force F GUnder the combined effect of the pressure from the groove wall of the track groove 14, the turning beam 9 is quickly turned into place.

[0223] In the above embodiment, G B1 >G S , door 30 is closed to G B1 When the elastic deformation of the hook portion 84 reaches the maximum value, the guide block 13 at the top of the flip beam 9 has not yet contacted the track groove 14, and the locking force F generated by the lock hook structure can be used. S and the inertial force F of the door body 30 G The flipping of the flip beam 9 is promoted, and the situation in which the flip beam 9 cannot be effectively flipped into place due to the force that causes the flip beam 9 to flip being offset by the rotation and outward movement of the door body 30 during the closing process of the door body 30 is reduced.

[0224] As described above, during the closing process of the door body 30, the stopper and the lock hook structure are closed to the door body 30. B1 After that, as the closing angle of the door body 30 decreases, the locking force F S Continuously declining.

[0225] As another configurable method, G B1 =G S , door 30 is closed to G B1 (G S ), when the elastic deformation of the hook portion 84 reaches the maximum value, the guide block 13 at the top of the flip beam 9 begins to contact the track groove 14; it can also fully utilize the locking force F generated by the lock hook structure S and the inertial force F of the door body 30 G The turning of the turning beam 9 is promoted, and the situation in which the turning beam 9 cannot be effectively turned into place due to the rotation and outward movement of the door body 30 during the closing process offsetting the force that causes the turning beam 9 to turn is reduced. At this time, the second contact positioning point coincides with the first contact positioning point.

[0226] As a configurable method, G B1 ∈[G S , G S +3°] to avoid locking force F during setting S Excessive attenuation causes the door 30 to close and reach G B1 The rear overturn beam 9 cannot be effectively overturned into place.

[0227] like Figure 33 As shown, as another feasible way, G F >G B1 , that is, the door body 30 is closed to G F When the flip beam 9 flips to the critical value of the torsion spring, the elastic deformation of the hook portion 84 has not yet reached the maximum deformation.

[0228] In this embodiment, the door closing force F W From start to close, continue to G B1 ; That is, the door 30 is closed to G B1 After that, remove the closing force F W , the user does not need to apply external force to complete the automatic closing of the door body 30.

[0229] In the door body 30 by G F Continue closing to G B1 During the process of closing the door 30, the door body 30 is under the closing force F W , the hook part 82 elastic force and the stop part 403 force continue to close, the flip beam 9 under the closing force F W , flipping force F N , the track groove 14 is turned over under the combined action of the pressure of the groove wall; the door body 30 is closed to G B1 When , the elastic deformation of the hook portion 84 reaches the maximum deformation.

[0230] In the door body 30 by G B1 During the process of continuing to close, the door body 30 is under the locking force F S , the hook portion 82 elastic force and the stop portion 403 of the joint action of the force continue to close in place; flip beam 9 in the locking force F S , flipping force F N , and the track groove 14 groove wall pressure jointly act to quickly flip into place.

[0231] As described above, during the closing process of the door body 30, the stopper and the lock hook structure are closed to the door body 30. F After that, the door body 30 moves outward during the closing process, causing the overturning force F N Continuously declining.

[0232] During the closing process of the door body 30, the stopper and the lock hook structure are closed to the point where the door body 30 reaches G B1 After that, as the closing angle of the door body 30 decreases, the locking force F S Continuously declining.

[0233] As a configurable method, G B1 ∈(G F , G F -1°] to avoid the overturning force F during setting. N , locking force F S Excessive attenuation, thus effectively utilizing the turning force F N , locking force F S The door body 30 is quickly closed into place and the flip beam 9 is quickly flipped into place.

[0234] In this embodiment, it can be set that G S =GB0 , that is, when the guide block 13 at the top of the flip beam 9 contacts the track groove 14, the hook portion 84 abuts against the stop portion 403. W Under the action of , the torsion spring of the flip beam 9 and the hook part begin to deform synchronously to accumulate elastic energy, and then release the elastic energy successively; effectively improving the synchronous movement and reducing the closing force F applied by the user during the opening process of the door body 30 W The number of stages improves the user experience.

[0235] like Figure 34 As shown, as another feasible way, G B1 =G F , that is, the door body 30 is closed to G B1 When the elastic deformation of the hook portion 84 reaches the maximum deformation, the flip beam 9 flips to the critical value of the torsion spring.

[0236] In this embodiment, the door closing force F W From start to close, continue to G B1 (G F ) when; that is, the door 30 is closed to G B1 After that, remove the closing force F W , the user does not need to apply external force to complete the automatic closing of the door body 30.

[0237] In the door body 30 by G B0 Close to G B1 ; Door body 30 in closing force F W , the hook part 82 elastic force and the stop part 403 force continue to close, the flip beam 9 under the closing force F W , the track groove 14 turns over under the combined action of the pressure of the groove wall, and the torsion spring is compressed to store elastic potential energy; the door body 30 is closed to G B1 (G F ), the elastic deformation of the hook portion 84 reaches the maximum deformation, and the flip beam 9 flips to the critical value of the torsion spring;

[0238] Door body 30 is made of G B1 (G F ) During the process of continuing to close, the door body 30 is under the locking force F S , the hook portion 82 continues to close in place under the action of the elastic force and the stop portion 403; the flip beam 9 is under the locking force F S , flipping force F N , and the pressure of the groove wall of the track groove 14 work together to quickly flip into place.

[0239] In the above embodiment, G is set B1 =G F , that is, the door body 30 is closed to G B1 (G F), when the elastic deformation of the hook portion 84 reaches the maximum deformation, the flip beam 9 flips to the critical value of the torsion spring, which can fully utilize the flip force F N , locking force F S The mutual promotion effect allows the door body 30 to close quickly and the flip beam 9 to flip quickly, reducing the situation in which the flip beam 9 cannot be effectively flipped into place due to the door body 30 rotating and moving outward to offset the force that causes the flip beam 9 to flip during the closing process of the door body 30.

[0240] As described above, during the closing process of the door body 30, the stopper and the lock hook structure are closed to the door body 30. B1 (G F ) after the door body 30 moves outward during the closing process, resulting in a turning force F N In addition, as the closing angle of the door body 30 decreases, the locking force F S Continuously declining.

[0241] In this embodiment, G B1 =G F , under the flipping force F N , locking force F S When both are at their maximum, they promote each other synchronously and fully expand the locking force F S The angle range for promoting the turning of the turning beam 9.

[0242] In this embodiment, it can be set that G S =G B0 , that is, when the guide block 13 at the top of the flip beam 9 contacts the track groove 14, the hook portion 84 abuts against the stop portion 403. W Under the action of , the torsion spring of the flip beam 9 and the hook part begin to deform synchronously to accumulate elastic energy, and then release the elastic energy successively; effectively improving the synchronous movement and reducing the closing force F applied by the user during the opening process of the door body 30 W The number of stages improves the user experience.

[0243] It should be noted that the present invention is further described above in conjunction with specific embodiments so that those skilled in the art can better understand and implement the present invention, but the scope of protection claimed by the present invention is not limited to the scope described in the specific embodiments. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other in any way unless there is a conflict.

[0244] In summary, the above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A refrigerator, characterized in that It includes: The box body defines a storage room with an access opening; the box body includes a first side wall and a second side wall arranged opposite to each other; A hinge is provided on the box body and is close to the side wall of the first body; the hinge has a positioning groove and a guide groove; The door body comprises a door front wall away from the box body when the door body is closed, and a door side wall close to the hinge and connected to the door front wall; the end of the door body close to the hinge is provided with a positioning shaft matched with the positioning groove, and a guide shaft located on the side of the positioning shaft away from the door front wall and matched with the guide groove; During the process of opening the door body from a closed state, the positioning shaft moves relative to the position of the positioning shaft when the door body is closed, and moves in a direction away from the door side wall when the door body is closed; the guide shaft moves relative to the position of the guide shaft when the door body is closed, and moves in a direction away from the door side wall when the door body is closed, so that the door body moves inward by a certain distance; In the projection of the plane where the top wall of the box is located, the plane where the first body side wall is located is the Y axis, and the straight line located on the side of the hinge away from the access opening and perpendicular to the first body side wall is recorded as the X axis; the X axis and the Y axis intersect at the origin O; the direction from the front wall of the door to the box body when the door is closed is the positive direction of the Y axis, and the direction from the first body side wall to the second body side wall is the positive direction of the X axis, forming a two-dimensional coordinate system XOY; The center trajectory line of the positioning groove is recorded as the first trajectory line S, and the function corresponding to the first trajectory line S in the coordinate system XOY is recorded as Y=F(X); Y=F(X) is a continuous function; Among them, X4>X3>X2>X1>X0>0; F`3>F`1>F`2>0>F`4; F`3>|F`4|>F`1; The door body opens to the maximum angle G max When the positioning shaft is located at the end of the positioning groove away from the first body side wall; the guide shaft is located at the end of the guide groove away from the first body side wall; the guide shaft is located on the side of the positioning shaft away from the first body side wall and the pick-up and release port.

2. The refrigerator according to claim 1, wherein: During the process of the door body opening from the closed state to the third angle G3, the positioning axis moves away from the door front wall and the door side wall when the door body is closed; The guide shaft first moves in a direction away from the door front wall and the door side walls when the door body is closed, and then moves in a direction away from the door side walls when the door body is closed and close to the door front wall when the door body is closed.

3. The refrigerator according to claim 2, wherein: The door body opens from the third angle G3 to the maximum angle G max During the process, the positioning shaft and the guide shaft both move in a direction away from the door side wall when the door body is closed and close to the door front wall when the door body is closed.

4. The refrigerator according to claim 1, wherein: The positioning groove is located on a side of the guide groove away from the access opening and close to the side wall of the first body; The guide groove is in a curved shape; the central trajectory line of the guide groove is an outwardly convex cam curve; the radius of the guide shaft is smaller than the minimum curvature radius of the central trajectory line of the guide groove.

5. The refrigerator according to any one of claims 1 to 4, characterized in that: When the door body is closed, the positioning shaft is located at the end of the positioning slot away from the door side wall, and the guide shaft is located at the end of the guide slot close to the door side wall; the guide shaft is located on the side of the positioning shaft close to the door side wall and away from the door front wall.

6. The refrigerator according to claim 1, 2, 3 or 4, characterized in that: When the door body is opened from the closed state to the first angle G1, the displacement of the door body relative to the box body close to the access opening per unit angle of rotation is recorded as ξ1, ξ1>0; During the process of the door body opening from the first angle G1 to the second angle G2, the displacement of the door body relative to the box body close to the take-in and put-out opening per unit angle of rotation is recorded as ξ2, ξ2>0; wherein, G2>G1, ξ2<ξ1.

7. The refrigerator according to claim 1, 2, 3 or 4, characterized in that: When the door body is opened from the closed state to the second angle G2, the door body moves inward by a distance δ1 per unit angle of rotation; The door body is opened from the second angle G2 to the maximum angle G max During the process, the door body moves inward by a distance of δ2 per unit angle of rotation; wherein, the second angle G2>the first angle G1, δ1>δ2.

8. The refrigerator according to claim 1, 2, 3 or 4, characterized in that: A first matching portion is formed on a side of the hinge away from the side wall of the first body, and a second matching portion is provided on an end of the door body close to the hinge to be locked or unlocked with the first matching portion; The refrigerator is provided with two door bodies arranged opposite to each other; a turning beam is provided at one end of one of the door bodies close to the other; a guide groove is provided at the top of the storage compartment; a guide block is provided at the top of the turning beam to match the guide groove; The door is closed to angle G B1 When , the elastic deformation of the second fitting portion is maximum; The door is closed to angle G S When the guide block begins to contact the guide groove; wherein, G B1 ≥G S .

9. The refrigerator according to claim 1, 2, 3 or 4, characterized in that: A first matching portion is formed on a side of the hinge away from the side wall of the first body, and a second matching portion is provided on an end of the door body close to the hinge to be locked or unlocked with the first matching portion; The refrigerator is provided with two door bodies arranged opposite to each other; one end of the two door bodies arranged opposite to each other is provided with a flip beam; a torsion spring is provided in the flip beam; The door is closed to angle G B1 When , the elastic deformation of the second fitting portion is maximum; The door is closed to angle G F When the flip beam flips to the critical point of the torsion spring, G F ≥G B1 .

Images