refrigerator

Abstract

The present invention provides a refrigerator, which comprises a cabinet, a hinge provided with a positioning shaft and a guide groove, and a door body; a positioning groove matched with the positioning shaft and a guide shaft matched with the guide groove are provided at the end of the door body; the midpoint of the central axis of the positioning shaft and the central axis of the guide shaft is recorded as the axis center point E; the door body has a centroid plane F passing through the centroid of the door body and parallel to the front wall of the door; the door body is opened from the closed state to the G max During the process, the centroid plane F is located between the central axis of the positioning shaft and the central axis of the guide shaft throughout the entire process; and when the door body is opened to different angles, the absolute value of the difference in distance between the center point E of the axis and the centroid plane F at any two opening angles is 0-5mm; when the door body is opened, the positioning shaft moves relative to the positioning groove toward the side close to the door side wall, and the guide shaft moves relative to the guide groove toward the side away from the first body side wall, so that the door body moves inward; the refrigerator of the present invention ensures that the door body will not exceed or exceed too much the side of the box body when opened, and enhances the stability of the door body opening.

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 is provided with a positioning shaft 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 groove matched with the positioning shaft and a guide shaft matched with the guide groove;

[0010] During the process of opening the door body from a closed state, the positioning shaft moves relative to the positioning groove toward the side close to the door side wall, and the guide shaft moves relative to the guide groove toward the side away from the first body side wall, so that the door body moves inward a certain distance;

[0011] The central axis of the positioning axis is denoted as the positioning central axis P, and the central axis of the guide axis is denoted as the guide central axis H; the midpoint of the line segment PH is denoted as the axis center point E; the door body has a centroid plane F passing through the centroid of the door body and parallel to the front wall of the door;

[0012] The distance between the axis center point E and the centroid plane F is recorded as the offset distance L; when the axis center point E is located on the side of the centroid plane F away from the front wall of the door, the offset distance L is a positive number;

[0013] The door body is opened from the closed state to G max During the process, the centroid plane F is entirely located between the central axis of the positioning axis and the central axis of the guide axis; and when the door body is opened to different angles, the absolute value of the difference between the offset distances L at any two opening angles is recorded as the offset difference ΔL; wherein, the offset difference ΔL∈[0,5], unit: mm.

[0014] In some embodiments of the refrigerator of the present application, the door is opened from the closed state to the G max During the process, the offset distance L is any value between 0.7 mm and 2.2 mm.

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

[0016] The positioning groove includes a connected straight groove section and a curved groove section, and the curved groove section is located on the side of the straight groove section close to the door side wall; when the door body is opened, the positioning shaft first moves linearly along the straight groove section relative to the positioning groove, and then moves curvedly along the curved groove section.

[0017] In some embodiments of the refrigerator of the present application, the center trajectory line of the curved segment of the positioning groove is recorded as the curved trajectory line; the guide groove is curved; the center trajectory line of the guide groove is recorded as the second trajectory line, and the curved trajectory line and the second trajectory line are both convex cam curves;

[0018] Wherein, the radius of the positioning axis is smaller than the minimum curvature radius of the curved track segment; and the radius of the guide axis is smaller than the minimum curvature radius of the second track line.

[0019] In some embodiments of the refrigerator of the present application, the door body has a door rear wall arranged opposite to the door front wall when the door body is closed;

[0020] The curved groove section protrudes toward the door side wall; along the direction from the door rear wall to the door front wall, the distance between the curved groove section and the door side wall gradually decreases;

[0021] Along the direction from the second side wall of the box body to the first side wall, the distance between the guide groove and the plane where the door front wall is located when the door body is closed first gradually increases and then gradually decreases.

[0022] In some embodiments of the refrigerator of the present application, the positioning shaft performs a linear motion along the linear groove section of the positioning groove, and the door body moves inward by a distance of ξ1 per unit angle of rotation;

[0023] The positioning shaft performs a curved motion stage along the curved groove section of the positioning groove, and the door body moves inward by a distance of ξ2 per unit angle of rotation; wherein ξ1>ξ2.

[0024] In some embodiments of the refrigerator of the present application, when the door body is closed, within the projection of the plane where the top wall of the box body is located, the positioning groove is located on the side of the guide groove close to the door front wall; 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.

[0025] In some embodiments of the refrigerator of the present application, during the opening process of the door body, the positioning groove and the guide groove never intersect within the projection of the plane where the top wall of the box body is located.

[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 G F 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 cabinet, a hinge provided with a positioning shaft and a guide groove, and a door body; a positioning groove matched with the positioning shaft and a guide shaft matched with the guide groove are provided at the end of the door body; the midpoint of the central axis of the positioning shaft and the central axis of the guide shaft is recorded as the axis center point E; the door body has a centroid plane F passing through the centroid of the door body and parallel to the front wall of the door; the door body is opened from the closed state to the G max During the process, the centroid plane F is located between the central axis of the positioning shaft and the central axis of the guide shaft throughout the entire process; and when the door body is opened to different angles, the absolute value of the difference in distance between the center point E of the axis and the centroid plane F at any two opening angles is 0-5mm; when the door body is opened, the positioning shaft moves relative to the positioning groove toward the side close to the door side wall, and the guide shaft moves relative to the guide groove toward the side away from the first body side wall, so that the door body moves inward; the refrigerator of the present invention ensures that the door body does not extend beyond or excessively extend beyond the side of the box body when opened, and improves the stability of the door body opening. 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 The door of the refrigerator in the first embodiment of the present invention is opened to View at the hinge;

[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 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;

[0052] Figure 16 Schematic diagram of the positions of the positioning shaft relative to the positioning groove and the guide shaft relative to the guide groove when the positioning shaft moves relative to the curved groove section of the positioning groove when the door of the refrigerator in the first embodiment of the present invention is opened;

[0053] Figure 17 Schematic diagram of the movement of the roller along the convex curve in the first embodiment of the refrigerator of the present invention;

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

[0055] Figure 19This is a schematic diagram of the exploded structure of the door end, hinge, and first track block in the second embodiment of the refrigerator of the present invention;

[0056] Figure 20 This is a schematic diagram of the assembly structure of the track block and the hinge in the second embodiment of the refrigerator of the present invention;

[0057] Figure 21 This is a schematic diagram of the exploded structure of the door end, the second track block, and the mounting block in the second embodiment of the refrigerator of the present invention;

[0058] Figure 22 This is a schematic diagram of the assembly structure of the door end, the second track block and the mounting block in the second embodiment of the refrigerator of the present invention;

[0059] Figure 23 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;

[0060] Figure 24 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;

[0061] Figure 25 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;

[0062] Figure 26 This is a schematic structural diagram of a hinge that cooperates with the lower end of the door body in the second embodiment of the refrigerator of the present invention;

[0063] Figure 27 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;

[0064] Figure 28 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;

[0065] Figure 29 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;

[0066] Figure 30 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;

[0067] Figure 31 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;

[0068] Figure 32 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;

[0069] Figure 33 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;

[0070] Figure 34 G in the third embodiment of the refrigerator of the present invention B1 >G S A diagram illustrating the state of the lock hook and the stopper, the guide block and the guide groove;

[0071] Figure 35 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;

[0072] Figure 36 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, stopper, guide block and guide groove.

[0073] 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; extension portion 402; stop portion 403; hook gap 404; first through hole 406; positioning shaft 41; guide shaft 42; positioning center axis P; guide center axis H; positioning groove 50; first trajectory line S; starting positioning point P0; first positioning point P1; second positioning point Point P2; third positioning point P3; fourth positioning point P4; fifth positioning point P5; guide groove 60; second trajectory line K; first guide endpoint J; first guide position J0; second guide position J2; third guide position J3; fourth guide position J4; fifth guide position J5; second guide endpoint I; first guide point I0; second guide point I2; third guide point I3; fourth guide point I4; fifth guide point I5; door end cover 38; receiving groove 37; receiving cavity 39;

[0074] First track block 80; first plate body 81; first ring plate 82; sealing gasket 11; second track block 90; second plate body 91; second through hole 92; mounting block 70; fixing plate 71; avoidance hole 72; locking hook 82; root connection portion 83; hook portion 84; first protrusion 34; second protrusion 35; gap groove 36; flip beam 9; guide block 13; track groove 14. DETAILED DESCRIPTION

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] Example 1

[0081] 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.

[0082] 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.

[0083] 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 by a hinge located at the top and a hinge located at the bottom.

[0084] The housing 10 includes a first side wall and a second side wall (i.e., the left and right sides of the housing 10) that are disposed opposite each other. A hinge is disposed on the housing 10 and adjacent to the first side wall. The door 30 includes a front wall 31 that is located away from the housing 10 when the door 30 is closed, a rear wall 33 that is located opposite the front wall 31, and a side wall 32 that is adjacent to the hinge and connected to the front wall 31. For example, when the hinge is located on the right side of the housing 10, the right side of the door 30 is the side wall 32; when the hinge is located on the left side of the housing 10, the left side of the door 30 is the side wall 32. The front wall 31 and the side wall 32 of the door 30 intersect to form a first side edge W, and the side wall 32 and the rear wall 33 intersect to form a second side edge N. When the door 30 is closed, the first side edge W is located on the side of the second side edge N that is away from the housing 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 specific processing settings, 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 of the door body 30 and parallel to the theoretical first side edge W is used to represent 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.

[0085] A door seal is provided on the rear wall of the door 30. When the door 30 is closed, the door seal abuts against the front face of the cabinet surrounding the access opening, effectively sealing the connection between the door 30 and the cabinet 10. This ensures that the door 30 seals the access opening and prevents cold air from escaping. The door seal can be annular.

[0086] Reference Figures 2 to 3 The hinge has a positioning shaft 41 and a guide groove 50 located on the side of the positioning shaft 41 away from the side wall of the first body; the end of the door body 30 close to the hinge is provided with a positioning groove 50 and a guide shaft 42 located on the side of the positioning groove 50 close to the door rear wall 33; the positioning shaft 41 is adapted to the positioning groove 50, and the guide shaft 42 is adapted to the guide groove 60. During the process of rotating the door body 30 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.

[0087] The hinge includes a hinge plate 40 fixedly connected to the box body 10, and the hinge plate 40 includes: a connecting portion 401 connected to the box body 10, and an extending portion 402 extending forward from the connecting portion 401 and having a horizontal plate shape. The connecting portion 401 can be fastened to the top wall of the box body 10 by fasteners such as screws, pins and bolts.

[0088] Specifically, the hinge at the upper end of the door body 30 includes a hinge plate 40 connected to the upper end of the housing 10, a positioning shaft 41 connected to the hinge plate 40 to form a limiting axis for guiding the movement of the door body 30, and a guide groove 60 formed on the hinge plate 40 to form a limiting groove for guiding the movement of the door body 30. The hinge plate 40 and positioning shaft 41 can be formed integrally or provided separately and assembled together. The positioning shaft 41 is provided on the extension portion 402 of the hinge and extends vertically downward.

[0089] Regarding the hinge at the lower end of the door body 30, the connection portion 401 is connected to the front end of the housing 10. A positioning shaft 41 extends upward from the extension portion 402 of the hinge plate 40. Furthermore, corresponding to the position of the hinge plate 40, a positioning slot 50 and a guide shaft 42 are provided at the upper and lower ends of the door body 30.

[0090] 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. When 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 all cases 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 to [3, 5], in 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.

[0091] To meet the above requirements, the door body 30 must be able to move inward during rotation so that the first side edge W does not extend too far beyond the side surface (reference plane M0) of the box body 10. For example, if the hinge plate 40 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), the inner side is the left side, meaning the door body 30 must be able to move to the left. For example, if the hinge plate 40 is located on the left side of the door body 30, the inner side is the right side, meaning the door body 30 must be able to move to the right.

[0092] like Figure 3As shown, in this embodiment, the positioning groove 50 includes a straight groove section and a curved groove section that are connected; wherein the straight groove section is located on a side of the curved groove section away from the door side wall 32.

[0093] As a possible arrangement, the curved groove section extends from the end of the door body 30 away from the door side wall 32 toward the door side wall 32, toward the direction close to the first side edge W, and protrudes toward the first side wall N. As a possible arrangement, the distance between the curved groove section and the door side wall 32 gradually decreases along the direction from the door rear wall 33 to the door front wall 31. As another possible arrangement, the distance between the straight groove section and the door side wall 32 gradually increases along the direction from the door rear wall 33 to the door front wall 31, so that the door body 30 moves inward and forward a certain distance during the opening process, on the one hand, avoiding interference between the door body 30 and the cabinet 100, and on the other hand, avoiding squeezing of the door seal and reducing wear of the door seal. As another possible implementation, the straight groove section is parallel to the door front wall 31.

[0094] The center trajectory of the positioning groove 50 is designated as the first trajectory S. Defined by the shape of the positioning groove 50, the first trajectory S comprises a smoothly transitioned straight segment and a curved segment. The curved segment is located on the side of the straight segment closest to the door sidewall 32 and bulges toward the side closest to the second lateral edge N. In this embodiment, the distance between the curved segment and the door sidewall 32 gradually decreases as it moves from the door rear wall 33 toward the door front wall 31, with the straight segment parallel to the door front wall 31. This configuration will be used as an example to describe its movement. Alternatively, the curved segment of the first trajectory S can be configured as a perfect circular arc.

[0095] The guide groove 60 on the hinge is a curved groove. It extends from an end distal to the access opening and the first sidewall to an end proximal to the access opening and the first sidewall. The guide groove 60 is convex toward the access opening. The center trajectory of the guide groove 60 is designated as the second trajectory K. Defined by the shape of the guide groove 60, the second trajectory K is curved and protrudes toward the access opening. As a configuration, the distance between the second trajectory K and the door front wall 31 increases and then decreases as it moves from the end distal to the door sidewall 32 toward the door sidewall 32. Specifically, the first trajectory groove 50 is located on the side of the second trajectory groove 60 proximal to the door front wall 31 and the door sidewall 32, allowing the door 30 to move a certain distance inward (toward the second sidewall) during rotation. This compensates for the outward displacement of the first side edge W caused by simple rotation of the door 30. By limiting the distance that the first side edge W extends beyond the reference plane M0, the door 30 effectively prevents interference with the cabinet 100 when opened.

[0096] 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, when the door body 30 is opened, with the positioning groove 50 and the guide shaft 42 provided on the door body 30 as stationary reference objects, it is equivalent to the positioning shaft 41 moving within the positioning groove 50 and the guide groove 60 moving relative to the guide shaft 42. For the sake of convenience in description, this application uses the positioning groove 50 and the guide shaft 42 as stationary reference objects, and the positioning shaft 41 and the guide groove 60 as moving relative to the reference objects for explanation.

[0097] In this embodiment, the central axis of the positioning shaft 41 is designated as the positioning central axis P, and the central axis of the guide shaft 42 is designated as the guide central axis H. The second trajectory line K includes a second guide endpoint I located away from the first body sidewall and the access opening, and a first guide endpoint J located near the second guide endpoint I and the first body sidewall and the access opening. The second trajectory line K extends from the second guide endpoint I toward a side near the first body sidewall and the access opening, then toward a side near the first body sidewall and away from the access opening, to the first guide endpoint J. In this embodiment, the second trajectory line K is a smooth convex curve.

[0098] In the projection of the plane where the top wall of the box 10 is located, the line segment PJ is recorded as the first line segment PJ. Figure 4-Figure 16 As shown, with the positioning slot 50 and the guide shaft 42 as stationary references, 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 slot 60 relative to the guide shaft 42 is equivalent to the movement of the second trajectory K through the guide center axis H, so that the door body 30 can move a certain distance inward (toward the side wall of the second body) while rotating, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door body 30, and effectively avoiding interference between the door body 30 and the cabinet 100 when opening. Since the positioning shaft 41 and the guide slot 60 are located on the hinge plate 40, the movement of the door body 30 relative to the cabinet 10 is equivalent to the relative movement of the two within the plane where the top wall of the cabinet 10 is located (or in a plane parallel to the top wall of the cabinet 10); that is, the movement of the door body 30 relative to the cabinet 10 is a relative movement within a two-dimensional plane. Within the plane of the top wall of the box body 10, the movement of the first line segment PJ relative to the positioning slot 50 (guide shaft 42) provided on the door body 30 is equivalent to the movement of the hinge plate 40 relative to the door body 30, and is also equivalent to the movement of the box body 10 relative to the door body 30. Due to the relative nature of movement, the movement of the door body 30 relative to the box body 10 can be inferred from the movement of the box body 10 relative to the door body 30.

[0099] In the following description, for the convenience of explanation, the movement of the first line segment PJ relative to the door body 30 (positioning groove 50 and / or guide shaft 42) in the plane where the top wall of the box body 10 is located represents the movement of the box body 10 (hinge plate 30) relative to the door body 30.

[0100] like Figure 4-Figure 16As shown, the first trajectory line S includes a starting point P0 away from the door sidewall 32 and a fifth locating point P5 near the door sidewall 32. The first trajectory line S extends from the starting point P0 in a straight line toward the door sidewall 32, and then extends along a curve to the fifth locating point P5. Specifically, as a configurable method, the first trajectory line S extends from the starting point P0 in a straight line toward the door sidewall 32, and then extends along a curve toward the door sidewall 32 and the door front wall 31 to the fifth locating point P5. The distance between the starting point P0 and the door front wall 31 is denoted as D1, and the distance between the fifth locating point P5 and the door front wall 31 is denoted as D2. In this embodiment, D1>D2. As another possible configuration, the fifth positioning point P5 is located on a side of the starting positioning point P0 that is closer to the door sidewall 32 and farther from the door front wall 31. That is, the first trajectory line S extends from the starting positioning point P0 along a straight line toward the door sidewall 32, then along a curve toward the door sidewall 32 and away from the door front wall 31 to the fifth positioning point P5. In this embodiment, the first trajectory line S extends from the starting positioning point P0 along a straight line toward the door sidewall 32, then along a curve toward the door sidewall 32 and toward the door front wall 31 to the fifth positioning point P5.

[0101] When the door 30 is closed, the distance between the second guide endpoint I and the door front wall 31 is denoted as Z1, and the distance between the first guide endpoint J and the door front wall 31 is denoted as Z2. As a configurable arrangement, Z1 < D2 < D1 < Z2. This arrangement effectively limits the relative movement between the guide slot 60 and the guide shaft 42, driving the movement of the positioning shaft 41 within the positioning slot 50. This allows the door 30 to move inward a certain distance during its opening, ensuring the stability of the door 30's rotational opening.

[0102] like Figure 4 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 first guide end point J of the second trajectory line K is located at the starting guide position J0; at this time, the starting guide position J0 coincides with the center axis of the guide shaft 42 (guide center axis H); that is, when the door body 30 is closed, the first guide end point J of the second trajectory line K coincides with the guide center axis H. 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. When the door body 30 is closed, in the projection of the plane where the top wall of the box body 10 is located, the positioning groove 50 is located on the side of the guide groove 60 close to the door front wall 32; the positioning shaft 41 is located at the end of the positioning groove 50 away from the door side wall 32, and the guide shaft 42 is located at the end of the guide groove 60 close to the door side wall 32.

[0103] In this embodiment, the maximum angle G of the refrigerator is opened. maxThe 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:

[0104] 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;

[0105] like Figure 4 As shown, When the door 30 is closed, the positioning center axis P is located at the starting positioning point P0 of the first trajectory line S, and the guide center axis H is located at the first guide endpoint J of the second trajectory line K. At this time, the position of the first guide endpoint J relative to the door 30 is recorded as the starting guide position J0, and the position of the second guide endpoint I relative to the door 30 is recorded as the starting guide point I0.

[0106] like Figure 5 As shown, , the door body 30 rotates from the closed state to G2 to open; in the above opening process, the positioning shaft 41 moves along the straight track segment of the first track line S toward the direction close to the door side wall 32, and the second track line K passes through the guide center axis H and moves toward the side away from the starting positioning point P0 while rotating clockwise. Specifically, in this opening process, the first guide point J gradually moves away from the guide center axis H from the position coincident with the guide center axis H, while the second guide point I gradually approaches the guide center axis H. It should be noted that in this embodiment, during the opening process of the door body 30, in the plane where the top wall of the box body 10 is located, the relative position relationship between the first guide point J of the guide groove 60 and the door body 30 is relatively complex, and the first guide point J is not entirely within the area where the door body 30 is located; therefore, the starting positioning point P0 is used as a reference point to describe the lateral movement of the first guide point J in a direction parallel to the door front wall 31.

[0107] Above, the door body 30 opens at an angle of The movement trend of the opening angle interval remains the same; the only difference is that the opening angle is different, the position of the positioning axis 41 relative to the straight track segment of the first track line S is different, and the point on the second track line K passing through the guide axis 42 is different. When the door 30 is opened to the corresponding interval, one of the opening angles can be selected to represent the relative positions of the positioning shaft 41 and the positioning groove 50, and the guide groove 60 and the guide shaft 42; specifically, as Figure 5 and Figure 11 As shown, It represents the position within the opening angle range for comparison with when the door body 30 is opened to other states.

[0108] like Figure 5 and Figure 11 As shown, when the door body 30 is opened 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 close to the door side wall 32. The first guide endpoint J of the second trajectory line K is located at the first guide position J1, and the first guide position J1 is located on the side of the starting guiding position J0 close to the door front wall 31 and away from the starting positioning point P0; the second guide endpoint I of the second trajectory line K is located at the first guide point I1, and the first guide point I1 is located on the side of the starting guiding point I0 close to the door side wall 32 and away from the door front wall 31.

[0109] like Figure 6 、 Figure 12 As shown, When the door body 30 rotates and opens to G2, the positioning center axis P is located at the second positioning point P2 of the straight track segment of the first track line S, and the second positioning point P2 is located on the side of the first positioning point P1 close to the door side wall 32; wherein, the second positioning point P2 is the end point of the straight track segment close to the door side wall 32; that is, the second positioning point P2 is the end point of the positioning axis 41 moving relative to the positioning groove 50 along the straight line toward the side close to the door side wall 32;

[0110] The second trajectory line K passes through the guide center axis H, and the first guide endpoint J of the second trajectory line K is located at the second guide position J2, and the second guide position J2 is located on the side of the first guide position J0 close to the door front wall 31 and away from the starting positioning point P0; the second guide endpoint I of the second trajectory line K is located at the second guide point I2, and the second guide point I2 is located on the side of the first guide point I1 close to the door side wall 32 and away from the door front wall 31. G2∈[20°, 25°] can be set to any value. In summary, in the process of the door body 30 opening from the closed state to G2, the positioning shaft 41 moves in a straight line throughout the entire process. In the above, when the door body 30 opens from the closed state to During the process, the positioning shaft 42 always moves in a straight line toward the door side wall 32, and the second track line K of the guide groove 60 passes through the guide center axis H and moves toward the side away from the starting positioning point P0 while rotating clockwise.

[0111] like Figure 7 、 Figure 13 As shown, During this opening process, the door body 30 rotates from G2 to G4. During this process, the positioning shaft 41 moves along the curved trajectory of the first trajectory S toward the door sidewall 32 and the door front wall 31. The second trajectory K passes through the guide center axis H and moves away from the starting positioning point P0 while rotating clockwise. Specifically, during this opening process, the first guide point J gradually moves away from the guide center axis H from the second guide position J2, while the second guide point I gradually moves toward the guide center axis H from the second guide point I2.

[0112] Above, the door body 30 opens at an angle of The movement trend of the opening angle interval remains consistent; the only difference is that the opening angle is different, the position of the positioning axis 41 relative to the curve track segment of the first track line S is different, and the point on the second track line K passing through the guide axis 42 is different. Similarly, the opening angle When the door 30 is opened to the interval, one of the opening angles can be selected to represent the relative positions of the positioning shaft 41 and the positioning groove 50, and the guide groove 60 and the guide shaft 42; specifically, as Figure 13 As shown, It represents the position within the opening angle range for comparison with when the door body 30 is opened to other states.

[0113] See also Figure 7 and Figure 13 , when the door body 30 is opened 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 close to the door side wall 32 and the door front wall 31;

[0114] The second trajectory line K passes through the guide center axis H, and the first guide endpoint J of the second trajectory line K is located at the third guide position J3, which is located on the side of the second guide position J2 closer to the door front wall 31 and away from the starting positioning point P0. The second guide endpoint I of the second trajectory line K is located at the third guide point I3, which is located on the side of the second guide point I2 closer to the door side wall 32 and the door front wall 31. G3 can be set to any value between [43°, 47°]; in this embodiment, G3 is set to 45°.

[0115] like Figure 8 、 Figure 14 As shown, When the door body 30 rotates open to G4; the positioning center axis P is located at the fourth positioning point P4 of the straight track segment of the first track line S, and the fourth positioning point P4 is located on the side of the third positioning point P3 close to the door side wall 32 and the door front wall 31;

[0116] The second trajectory line K passes through the guide center axis H, and the first guide endpoint J of the second trajectory line K is located at the fourth guide position J4, which is located on the side of the third guide position J3 close to the door front wall 31 and close to the starting positioning point P0; the second guide endpoint I of the second trajectory line K is located at the fourth guide point I4, which is located on the side of the third guide point I3 close to the door side wall 32 and away from the door front wall 31. G4 can be set to any value between [88°, 92°]; in this embodiment, When the door is opened to 90°, the position of the positioning shaft 41 relative to the positioning groove 50 is located on the side close to the door side wall 32 when the door is closed; that is, the fourth positioning point P4 is located on the side close to the door side wall 32 of the starting positioning point P0.

[0117] like Figure 9 As shown, When the door 30 is opened by rotating from G4 to G max During the above opening process, the positioning shaft 41 moves along the curved track segment of the first track line S toward the door side wall 32 and the door front wall 31, and the second track line K passes through the guide center axis H and moves away from the starting positioning point P0 while rotating clockwise. Specifically, during the opening process, the first guide point J gradually moves away from the guide center axis H from the fourth guide position J4, while the second guide point I gradually moves toward the guide center axis H from the fourth guide point I4. In this embodiment, G can be set max =116°.

[0118] Above, the door body 30 opens at an angle of The movement trend of the opening angle interval remains consistent; the only difference is that the opening angle is different, the position of the positioning axis 41 relative to the curve track segment of the first track line S is different, and the point on the second track line K passing through the guide axis 42 is different. Similarly, the opening angle When the door 30 is opened to the corresponding interval, one of the opening angles can be selected to represent the relative positions of the positioning shaft 41 and the positioning groove 50, and the guide groove 60 and the guide shaft 42; specifically, as Figure 15 As shown, It represents the position within the opening angle range for comparison with when the door body 30 is opened to other states.

[0119] Door 30 opens to G max When the angle is greater than 90°, the positioning center axis P is located at the fifth positioning point P5 of the first trajectory line S, and the fifth positioning point P5 is located on the side of the fourth positioning point P4 close to the door side wall 32 and the door front wall 31;

[0120] The second trajectory K passes through the guide center axis H, and the first guide endpoint J of the second trajectory K is located at the fifth guide position J5, which is located on the side of the fourth guide position J4 near the door front wall 31 and near the starting positioning point P0. The second guide endpoint I of the second trajectory K is located at the fifth guide point I5, which is located on the side of the fourth guide point I4 near the door side wall 32 and near the door front wall 31. At this time, the fifth guide point I5 coincides with the guide center axis H; that is, the guide center axis H is located at the second guide endpoint I of the guide groove 60, which is away from the first body side wall. The guide axis 42 is located at the end of the guide groove 60, away from the first body side wall, relative to the guide groove 60.

[0121] In this embodiment, 0°<G1<G2<G3<G4<G max The starting positioning point P0, the first positioning point P1, the second positioning point P2, the third positioning point P3, the fourth positioning point P4, and the fifth positioning point P5 are sequentially distributed along the first trajectory line S. The first positioning point P1, the second positioning point P2, and the third positioning point P3 are distributed along the straight trajectory segment toward the door sidewall 32, and the third positioning point P3, the fourth positioning point P4, and the fifth positioning point P5 are distributed along the curved trajectory segment toward the door sidewall 32 and the door front wall 31.

[0122] Among them, relative to the door body 30, the starting guide position J0, the first guide position J0, the second guide position J2, and the third guide position J3 are sequentially distributed in the direction close to the door front wall 31 and away from the starting positioning point P0; the third guide position J3, the fourth guide position J4, and the fifth guide position J5 are sequentially distributed in the direction close to the door front wall 31 and close to the starting positioning point P0. It should be noted that in this embodiment, G1, G2, G3, G4, G max They are recorded as the first angle, the second angle, the third angle, the fourth angle, and the maximum angle in sequence.

[0123] 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 toward the door side wall 32. The guide shaft 42 always moves relative to the guide groove 60 and maintains unidirectional movement while rotating. That is, during the entire process of the door body 30 opening, the positioning shaft 41 and the guide groove 60 both maintain unidirectional movement without reversing, 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 provides a good feel for opening and closing the door 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 maintains relative motion relative to the positioning groove 50, and the guide shaft 42 maintains relative motion relative to the guide groove 60 throughout the entire process. Therefore, there is no acceleration of stopping and moving again during the entire opening process of the door body 30, which makes the movement of the door body 30 smoother.

[0124] Combined with the above position of the two hinge shafts relative to the track groove when the door body 30 is opened to a specific angle, it can be seen that the matching relationship between the positioning shaft 41 relative to the positioning groove 50 and the guide shaft 42 relative to the guide groove 60 exists in the following situation; the door body 30 is opened at a specific angle. When , the positioning shaft 41 moves along the straight track segment of the positioning groove 50; When the positioning shaft 41 moves to the end point of the straight track segment of the positioning groove 50 close to the door side wall 32 (the second positioning point P2). When the positioning shaft 41 moves along the curved track section of the positioning groove 50. In summary, according to the movement of the positioning shaft 41 relative to the positioning groove 50, Open the door 30 from the closed state to G max The relative movement of the two stages is described below from the perspective of the matching relationship between the positioning shaft 41 and the positioning groove 50, and the guide groove 60 and the guide shaft 42:

[0125] The first stage, such as Figure 10 and Figure 12 As shown, the door body 30 rotates from the closed state to open to G2.

[0126] In the first stage, the door body 30 opens from 0° through G1 to G2. During this process, the positioning center axis P moves from the starting positioning point P0 along the straight segment of the first trajectory line S toward the door sidewall 32. The second trajectory line K passes through the guide center axis H, and the first guide positioning point J gradually moves away from the guide center axis H, while the second guide positioning point I gradually moves toward the guide center axis H.

[0127] Specifically, the positioning center axis P moves from the starting positioning point P0 along the straight trajectory segment of the first trajectory line S through the first positioning point P1 to the second positioning point P2; the second trajectory line K passes through the guide center axis H, and the first guide endpoint J moves from the starting guide position J0 through the first guide position J1 to the second guide position J2.

[0128] During the first stage of opening, using the positioning slot 50 and guide shaft 42 (door body 30) as reference points, as the door body 30 opens from 0° to G2, the first line segment PJ rotates clockwise from P0J0 and moves outward to P1J1 and P2J2, respectively (P0J0 → P1J1 → P2J2). Since the positioning slot 50 and guide shaft 42 are located on the door body 30, and the positioning shaft 41 and guide slot 60 are located on the hinge, the first line segment PJ represents the movement of the hinge plate 40 located on the housing 10. This indicates that, using the door body 30 as reference point, throughout the entire process of opening the door body 30 from the closed state to G2, the housing 10 (i.e., the hinge plate 40) maintains clockwise rotation relative to the door body 30 and moves outward in a straight line. According to the relativity of motion, with the cabinet 10 as a reference (i.e., the hinge plate 40 as a reference), during the entire process of the door 30 opening from the closed state to G2, the door 30 (i.e., the positioning groove 50 and the guide shaft 42) rotates counterclockwise relative to the cabinet 10 to open and moves inward along a straight line. In other words, the door 30 opens and moves inward a certain distance, compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30, effectively preventing interference between the door 30 and the cabinet 100.

[0129] The second stage, such as Figure 10 and Figure 16 As shown, the door body 30 is rotated from G2 to G max process.

[0130] The door 30 opens from G2 through G3 and G4 in sequence to G max During this process, the positioning center axis P moves from the second positioning point P2 along the curved track segment of the first track line S toward the door side wall 32 and the door front wall 31; the second track line K passes through the guide center axis H, and the first guide positioning point J gradually moves away from the guide center axis H, while the second guide positioning point I gradually approaches the guide center axis H.

[0131] Specifically, the positioning center axis P moves from the second positioning point P2 along the curved trajectory segment of the first trajectory line S through the third positioning point P3 and the fourth positioning point P4 to the fifth positioning point P5; the second trajectory line K passes through the guide center axis H, and the first guide endpoint J moves from the second guide position J2 through the third guide position J3 and the fourth guide position J4 to the fifth guide position J5.

[0132] During the second stage of opening, the door 30 rotates from G2 to G max In the process of opening the door 30 from G2 to G, the positioning groove 50 and the guide groove 60 are used as references. maxDuring the process, the first line segment PJ rotates clockwise from P2J2 and moves outward to P3J3, P4J4, and P5J5 (P2J2→P3J3→P4J4→P5J5). Since the positioning groove 50 and the guide shaft 42 are set on the door body 30, the first line segment PJ represents the movement of the hinge plate 40 set on the box body 10; it can be concluded that: with the door body 30 as a reference, the door body 30 opens from G2 to G max During the whole process, the box body 10 (i.e., the hinge plate 40) keeps rotating clockwise relative to the door body 30 and moves outward. According to the relativity of movement, with the box body 10 as a reference (i.e., the hinge plate 40 as a reference), the door body 30 opens from G2 to G max During the entire process, the door body 30 (ie, the positioning groove 50 and the guide groove 60) rotates counterclockwise and moves inward relative to the box body 10. That is, the door body 30 opens and moves inward a certain distance at the same time.

[0133] 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.

[0134] In this embodiment, the door 30 is opened from the closed state to the G max During the process, the door body 30 always moves inward relative to the position of the central axis P of the positioning shaft 41 when the door body 30 is closed. That is, with the positioning shaft 41 as a stationary reference, the door body 30 opens from the closed state to the G max During the opening and closing process, the door body 30 always moves inward relative to the central axis P of the positioning shaft 41.

[0135] Taking the door body 30 (positioning groove 50 and guide shaft 42) as a reference, the position of the positioning shaft 41 when the door body 30 is closed is recorded as the first initial position; 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 opening and closing process, the positioning shaft 41 always keeps moving in one direction relative to the door body 30.

[0136] In addition, in this embodiment, during the entire process of opening the door body 30 , within the projection of the plane where the top wall of the box body 10 is located, the positioning groove 50 and the guide groove 60 never intersect.

[0137] It should be noted that the present application is not limited to the above configuration in which the hinge plates 40 at the upper and lower ends of the door body 30 are both provided with positioning shafts 41 and guide grooves 60, and the positioning grooves 50 and guide shafts 42 are both 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. The configuration at the other end of the door body 30 is not limited to the above configuration.

[0138] Specifically, as an operative approach, one of the upper and lower ends of the door body 30 is provided with a positioning slot 50 and a guide shaft 42, while the other end is provided with a positioning shaft 41 and a guide slot 60, or a positioning slot 41 and a guide shaft 42, or a guide shaft 42 and a positioning slot 50. Correspondingly, the corresponding hinge is provided with a limiting shaft or limiting slot that mates with the adjacent end of the door body 30. The specific configuration is not further described here.

[0139] In some embodiments of the present application, the positioning shaft 41 performs a linear motion stage (0° to G2) along the straight groove section of the positioning groove 50, and the door body 30 moves inward by a distance of ξ1 per rotation and opening unit angle. The positioning shaft 41 performs a curved motion stage (G2 to G3) along the curved groove section of the positioning groove 50. max ), the distance the door body 30 moves inward per unit angle of rotation is ξ2. Wherein, ξ1>ξ2. With the above arrangement, the distance the door body 30 moves inward per 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 the first side edge W exceeds the reference plane M0 to within 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 toward the door side wall 32, 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. On the other hand, the arrangement of the track grooves with the above track characteristics is more compact and the movement efficiency is higher. In this embodiment, the essence of the inward movement of the refrigerator door body 30 is the effective inward lateral movement of the positioning groove 50; in the stage when the refrigerator door body 30 is just beginning to open, its lateral movement efficiency is high, and at this time the door body 30 moves inward quickly, making its subsequent trajectory easy to design and arrange.

[0140] As another setting method, G2∈[4°,6°] is any value.

[0141] During the opening process of the door body 30, the distance between the point of the door body 30 closest to the plane where the access port is located and the plane where the access port is located is recorded as the minimum distance D min ; Door 30 opens to angle When the minimum distance is When the door 30 is opened to 90°, the minimum distance D min(90°) takes the maximum; when the door body 30 is opened to 90°, the minimum distance D between the door body 30 and the plane where the take-in and put-out opening is located min In this embodiment, when the door body 30 is opened to 90 degrees, the door side wall 31 is parallel to the plane where the access opening is located.

[0142] 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 only rotates around the central axis of the fixed positioning shaft 41, the maximum angle that the door body 30 can open is G' due to the restriction of the cabinet 100. max .

[0143] 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 positioning shaft 41 moves in the direction close to the first side edge W (close to the door front wall 31 and the door side wall 32), and the door body 30 has a tendency to move inward and forward (away from the access opening and the side wall of the first body), 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 .

[0144] When the refrigerator is not embedded in the cabinet 100, the opening of the door 30 is not restricted by the cabinet 100; the maximum angle that the door 30 can be opened is G max +△G, where △G>0°. G can be set max It is any value between 90° and 105°, and △G is any value between 8° and 12°.

[0145] In some embodiments of the present application, Figure 4-Figure 9 As shown, the door body 30 rotates from the closed state to the maximum angle G max During the opening process, the center of mass plane F is located between the positioning shaft 41 and the guide shaft 42. That is, the door body 30 is located between the positioning shaft 41 and the guide shaft 42 during the opening process. max), the center of mass plane F is always located between the positioning axis 41 and the guide axis 42, the door body 30 is better stressed, and the door body 30 opens more stably.

[0146] The line PH connecting the center axis of the positioning shaft 41 and the center axis of the guide shaft 42 within the plane of the top wall of the housing 10 is denoted as the axis segment PH. The midpoint of the axis segment PH is denoted as the axis center E; the distance between the axis center E and the centroid plane F is denoted as the offset distance L. When the axis center E is located on the side of the centroid plane F closer to the door rear wall 33, the offset distance L is a positive number; correspondingly, when the axis center E is located on the side of the centroid plane F closer to the door front wall 31, the offset distance L is a negative number; and when the axis center E is located on the centroid plane F, the offset distance L is zero.

[0147] 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 L at any two opening angles is recorded as the offset difference ΔL. When the offset distance L remains unchanged, the offset differences ΔL are all 0; when the offset distance L changes within a small range, the offset differences ΔL are not all 0, and can be set to offset difference ΔL∈[0,5], unit: mm; that is, when the offset distance L changes within a small range, the maximum value of the offset difference ΔL is not greater than 5mm. That is, when the door body is opened to the angle G i and G j When ΔL=|L Gi -L Gj |∈[0,5],unit: mm;where G i ≠G j ; G i ∈[0,G max ], G j ∈[0,G max ] any value.

[0148] Specifically, when the door body 30 is closed, the displacement angle is recorded as L0; when the door body 30 is opened to G1, G2, G3, G4, G max , the displacement angles are recorded as L1, L2, L3, L4, and L5 respectively; where ΔL=|L m -L n |∈[0, 5], unit: mm; where m≠n, and both m and n are integers; m∈[0, 5], n∈[0, 5]. Optional. In this embodiment, ΔL∈[0, 1.5], unit: mm.

[0149] In this embodiment, L1, L2, L3, L4, and L5 are all any value between 0.7 mm and 2.2 mm, and the difference between any two offset distances is no more than 1.5 mm.

[0150] In summary, 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 L 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 L 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 L between the center point E of the axis and the center of mass plane F is less than 5 mm.

[0151] 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 L between the center point E of the axis and the center of mass plane F remains relatively constant (the maximum change is less than 5mm), 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 PH, effectively enhancing the stability of the door body 30 during the entire opening process.

[0152] In addition, in some embodiments of the present application, during the entire process of the door body 30 being opened, the length of the axis line segment PH remains relatively constant, that is, the length of the axis line segment PH fluctuates within a relatively small range. Specifically, in this embodiment, the door body 30 rotates from the closed state to the maximum angle G max During this process, the maximum change in axis segment PH is less than 5 mm. That is, as door body 30 opens, the positions of positioning shaft 41 and guide shaft 42 continuously change, and the distance between their center axes changes by less than 5 mm. This configuration effectively enhances the stability of door body 30 throughout its opening process, improving the user's door-opening experience.

[0153] In some embodiments of the present application, the door body is opened from the closed state to the maximum angle G max During the process, the direction of movement of the positioning shaft 41 relative to the positioning groove 50 is recorded as the first movement direction; the direction of movement of the guide groove 60 passing through the guide shaft 41 and relative to the guide shaft 41 is recorded as the second movement direction; wherein, the angle between the first movement direction and the second movement direction is recorded as the movement angle ω. The door body 30 opens from the closed state to the maximum angle G max During this process, as the opening angle of the door body 30 increases, the motion angle ω gradually increases. In this embodiment, the angles of the movement directions of the positioning shaft 41 relative to the positioning groove 50, and the guide groove 60 relative to the guide shaft 42, increase as the opening angle of the door body 30 increases. This effectively increases the stability of the mechanical properties of the door body 30 when it is opened, and improves the smoothness and stability of the movement of the door body 30.

[0154] In some embodiments of the present application, the positioning groove 50 and the guide groove 60 are configured as regular curve grooves. Figure 3 、 Figure 4 Figure 9. Specifically, in this embodiment, the curved segments of the first trajectory S and the second trajectory K are both smooth curves, with the curved segments of the first trajectory S transitioning smoothly to the straight segments. As a configurable configuration, the curved segments of the first trajectory S are tangent to the straight segments. Correspondingly, the curved groove walls of the curved groove segments of the positioning groove 50 are smoothly curved; the curved groove walls of the guide groove 60 are also smoothly curved, with the straight groove walls of the straight groove segments of the positioning groove 50 transitioning smoothly to the curved groove walls of the curved groove segments. Optionally, the straight groove walls of the straight groove segments of the positioning groove 50 are tangent to the curved groove walls of the curved groove segments.

[0155] The above arrangement allows for smooth movement of the positioning shaft 41 relative to the positioning slot 50 and the guide shaft 42 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 positioning shaft 41 and the guide shaft 42 maintain continuous and uninterrupted movement throughout their entire range relative to the positioning slot 50, and the guide shaft 42 maintains continuous and uninterrupted movement throughout their entire range relative to the guide slot 60.

[0156] In this embodiment, the movement of the positioning shaft 41 relative to the positioning slot 50 and the movement of the guide shaft 42 relative to the guide slot 60 are actually the movement of the roller relative to the cam. In a roller follower cam mechanism, the size of the roller radius often affects the shape of the actual cam profile curve, so the roller radius must be selected appropriately.

[0157] 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.

[0158] like Figure 17 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.

[0159] When the cam theoretical profile curve is a convex curve, then ρ=ρ′-r T :

[0160] (1) Figure 17 As shown in b), when ρ min >r T ,ρ′>0, then the actual contour curve is a smooth curve;

[0161] (2) Figure 17 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;

[0162] (3) Figure 17 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.

[0163] 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.

[0164] Accordingly, in this embodiment, the curved track segment of the first track line S corresponds to the cam theoretical profile curve of the positioning groove 50; in this embodiment, the cam theoretical profile curve is an outward convex curve (the curved groove segment bulges toward the door side wall 32); the curved groove wall of the positioning groove 50 close to the door front wall 31 is the actual profile curve; in this embodiment, the radius r of the positioning shaft 41 is T The size of satisfies the setting (1) (ρ min >r T ) to ensure that the curved groove wall of the positioning groove 50 close to the door front wall 31 is a smooth curve.

[0165] In this embodiment, the second trajectory line K corresponds to the theoretical cam profile curve of the guide groove 60. In this embodiment, the theoretical cam 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 curved track segment of the first track line S and the second track line K are both configured as convex cam curves.

[0166] As another possible configuration, the curved segment of the first trajectory S and at least a portion of the second trajectory K can also be configured as concave curves. For example, if the first trajectory S is configured to extend from the starting positioning point P0 along a straight line toward the door sidewall 32 and then along a curve toward the door sidewall 32 and away from the door front wall 31 to the fifth positioning point P5, the portion of the second trajectory K near the door sidewall 32 is configured as a curve extending toward the door sidewall 32 and away from the door front wall 31. In this case, the curved segment of the first trajectory S and the portion of the second trajectory K near the door sidewall 32 are configured as concave curves, allowing the positioning shaft 41 and the guide shaft 42 to move smoothly along them.

[0167] Example 2

[0168] The principle of the second embodiment is the same as that of the first embodiment; the second embodiment limits the arrangement of the positioning shaft 41 and the guide groove 60 on the hinge and the arrangement of the positioning groove 50 and the guide shaft 42 on the door body 30.

[0169] Specifically, refer to Figures 18 to 30 A first track block 80 is fixed on the hinge. The first track block 80 is formed separately and installed on the extension portion 402. The guide groove 60 is formed on the first track block 80; the positioning shaft 41 is formed on the hinge plate 40 and extends from the hinge plate 40 to the end of the door body 30 adjacent thereto.

[0170] Specific reference Figures 18 to 20 In this embodiment, the first track block 80, which is mounted on the hinge plate 40 corresponding to the upper end of the door body 30, is used as an example for description. In this embodiment, the first track block 80 is formed with a guide groove 60. The guide groove 60 includes a groove bottom and a circumferential groove wall surrounding the groove bottom edge. The circumferential groove wall defines a notch opposite to the groove bottom. The first track block 80 includes a first plate 81, on which the guide groove 60 is formed.

[0171] The hinge plate 40 is provided with a first through-hole 406. The shape of the first through-hole 406 matches the shape of the notch of the guide slot 60. The first track block 80 is mounted on the side of the hinge plate 40 away from the door body 30. Specifically, the first plate 81 of the first track block 80 mates with the extension 402 and is secured to the extension 402 via a first fixing member. The notch of the guide slot 60 corresponds to the first through-hole 406. Specifically, the first fixing member is configured as a screw, etc.

[0172] As a configuration, the guide slot 60 includes a first ring plate 82 located on the side of the first plate 81 away from the bottom of the guide slot 60. The first ring plate 82 defines the notch of the guide slot 60. The first ring plate 82 is installed in the first through hole 406, and the first plate 81 cooperates with the extension 402 of the hinge plate 40. This configuration allows for precise positioning and facilitates quick assembly.

[0173] As a configuration, a sealing gasket 11 is provided between the first plate 81 and the hinge plate 40. The sealing gasket 11 is used to seal the connection between the first track block 80 and the hinge plate 40, effectively preventing dust from accumulating in the gap between the first track block 80 and the hinge plate 40. The first ring plate 82 passes through the sealing gasket 11 to effectively secure the sealing gasket 11.

[0174] In the above embodiment, the guide groove 60 is longer than the positioning groove 40, and the groove opening of the guide groove 60 faces downward, which can prevent dust from falling into the groove, effectively ensuring the cleanliness of the guide groove 60, and avoiding the movement of the matching limit shaft due to dust accumulation in the groove, thereby effectively ensuring the long-term smoothness of the door body 30 when opening.

[0175] Specific reference Figures 21 to 22 In some embodiments of the present application, a second track block 90 is installed on the door body 30; the second track block 90 is integrally formed and installed on the end of the door body 30 corresponding to the hinge plate 40, and a positioning groove 50 is formed on the second track block 90; specifically, the second track block 90 includes a second plate body 91, and the positioning groove 50 is formed on the second plate body 91; and a second through hole 92 is formed on the second plate body 91 at a position adjacent to the positioning groove 50.

[0176] A mounting block 70 is mounted on the upper end of the door body 30 and is fixed between the second track block 90 and the end of the door body 30. The mounting block 70 includes a fixing plate 71, a guide shaft 42 formed on the fixing plate 71, and a clearance hole 72 formed on the fixing plate 71 corresponding to the positioning groove 50. In this embodiment, the second track block 90 is integrally formed;

[0177] The door body 30 includes a door end cover 38 near the hinge; a receiving groove 37 is formed on one side of the door end cover 38 near the hinge, and a receiving cavity 39 for accommodating the positioning groove 50 is formed at the bottom of the receiving groove 37 on the door end cover 38.

[0178] The fixing plate 71 of the mounting block 70 and the second plate 91 of the second track block 90 are both installed in the receiving groove 37, with the fixing plate 71 located on the side of the second plate 91 away from the hinge. Specifically, the fixing plate 71 is installed in the receiving groove 37 and cooperates with the bottom wall of the receiving groove 37. The avoidance hole 72 formed on the fixing plate 71 corresponds to the opening of the receiving cavity 39. The second plate 91 of the second track block 90 is installed on the side of the fixing plate 71 near the hinge and is located in the receiving groove 37. The guide shaft 42 formed on the fixing plate 71 passes through the second through hole 92 and then cooperates with the guide groove 60 provided on the hinge. The positioning groove 50 passes through the avoidance hole 72 and is installed in the receiving cavity 39. The first plate 81, the fixing plate 71, and the receiving groove 37 are then fixedly connected by a second fixing member.

[0179] The second track block 90 and mounting block 70 are separate components, with a positioning slot 50 formed on the second track block 90 and a guide shaft 42 formed on the mounting block 70. This facilitates processing and improves molding accuracy, thereby increasing assembly precision. Furthermore, this assembly method effectively ensures the secure connection of the components.

[0180] 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.

[0181] As a configurable method, the second matching portion is provided on the locking block at the lower end of the door body 30. Figure 23 As shown in Figure 30 , 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 of 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 closer 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 closer to the door rear wall 33.

[0182] Specifically, the door end cover 38 at the lower end of the door body 30 is provided with a receiving portion located on the side of the first and second perforations away from the door side wall 32. The locking block is inserted into the receiving portion and then fastened to the door body 30 by screws or the like.

[0183] As a configurable method, the lock hook 82 includes a root connection portion 83 and a hook portion 84. The root connection portion 83 is connected to a receiving portion formed on the side of the door end cover 38 close to the hinge and located on the side of the first and second perforations 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 the lock hook 82 is mainly deformed by the hook portion 84 when it is disengaged from the stop portion 403. 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 from the outside of the door body 30.

[0184] A first mating portion, located on the side of the hinge plate 40 away from the first 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 refrigerator's refrigeration and freezing performance. 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] In addition, the locking block can be made of POM material, which has strong friction resistance and can increase service life.

[0191] 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 locking block when the door is opened forcefully to a certain angle.

[0192] 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 fifth positioning point P5 and the third guide end point J moves to the fifth guide position J5, the stopper at the lower end of the door body 30 abuts against the stopper surface of the hinge plate 40, allowing the door body 30 to open to its maximum angle and preventing wear and tear between the guide shaft 42 and the end of the guide groove 60 near the door sidewall 32.

[0193] In this embodiment, the limiting portion includes an embedding portion and a limiting strip. The limiting portion can be a sheet metal part.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] Example 3

[0199] In this embodiment, Figure 31 As shown, the refrigerator includes two doors 30 positioned opposite each other, which cooperate to open and close the access opening. When the doors 30 are closed, a tilting 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 tilting beam 9 slidably engages with the track groove 14 to adjust the tilting beam 9 to different angles relative to the doors 30. When the doors 30 are closed, the tilting beam 9 closes the gap between the two doors 30 and the refrigerator body 10, effectively preventing cold air from escaping.

[0200] 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.

[0201] 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.

[0202] 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).

[0203] 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.

[0204] like Figure 32-Figure 33 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.

[0205] 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.

[0206] 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 groove wall, the hook portion 84 undergoes elastic deformation; F In the closing stage, the turning beam 9 generates the turning force F NThe turning is completed under the combined action of the pressure of the groove wall of the track groove 14.

[0207] Combined with the setting of the locking structure in the sixth or ninth embodiment, combined with Figure 27-Figure 29 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 , in 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 B0 When 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.

[0208] 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 FG , so that the door body 30 maintains its original closing movement trend.

[0209] 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.

[0210] 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.

[0211] like Figure 34 As shown, as a configurable method, G B1 >G S , that is, the door 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;

[0212] 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.

[0213] 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;

[0214] 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;

[0215] 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 G Under the combined effect of the pressure from the groove wall of the track groove 14, the turning beam 9 is quickly turned into place.

[0216] 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.

[0217] 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.

[0218] 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.

[0219] 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.

[0220] like Figure 35 As shown, as another feasible way, G F >G B1 , that is, the door 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.

[0221] 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.

[0222] 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 turns over under the combined pressure of the groove wall; the door body 30 closes to G B1 When , the elastic deformation of the hook portion 84 reaches the maximum deformation.

[0223] 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.

[0224] As described above, 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. F After that, the door body 30 moves outward during the closing process, causing the overturning force F N Continuously declining.

[0225] 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.

[0226] 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.

[0227] 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.

[0228] like Figure 36 As shown, as another feasible way, G B1 =G F , that is, the door 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.

[0229] 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.

[0230] 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;

[0231] Door body 30 is made of G B1 (GF ) 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.

[0232] In the above embodiment, G is set B1 =G F , that is, the door 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.

[0233] As described above, 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 (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.

[0234] 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.

[0235] 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.

[0236] 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.

[0237] 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 close to the side wall of the first body; the hinge is provided with a positioning shaft 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 groove matched with the positioning shaft and a guide shaft matched with the guide groove; During the process of opening the door body from a closed state, the positioning shaft moves relative to the positioning groove toward the side close to the door side wall, and the guide shaft moves relative to the guide groove toward the side away from the first body side wall, so that the door body moves inward a certain distance; The central axis of the positioning axis is denoted as the positioning central axis P, and the central axis of the guide axis is denoted as the guide central axis H; the midpoint of the line segment PH is denoted as the axis center point E; the door body has a centroid plane F passing through the centroid of the door body and parallel to the front wall of the door; The distance between the axis center point E and the centroid plane F is recorded as the offset distance L; when the axis center point E is located on the side of the centroid plane F away from the front wall of the door, the offset distance L is a positive number; The door body is opened from the closed state to the maximum angle G max During the process, the centroid plane F is entirely located between the central axis of the positioning axis and the central axis of the guide axis; and when the door body is opened to different angles, the absolute value of the difference between the offset distances L at any two opening angles is recorded as the offset difference ΔL; wherein, the offset difference ΔL∈[0,5], unit: mm.

2. The refrigerator according to claim 1, wherein: The door body is opened from the closed state to the maximum angle G max During the process, the offset distance L is any value between 0.7 mm and 2.2 mm.

3. The refrigerator according to claim 1 or 2, characterized in that: On the door body, the guide shaft is located on a side of the positioning groove away from the door front wall and close to the door side wall; The positioning groove includes a connected straight groove section and a curved groove section, and the curved groove section is located on the side of the straight groove section close to the door side wall; when the door body is opened, the positioning shaft first moves linearly along the straight groove section relative to the positioning groove, and then moves curvedly along the curved groove section.

4. The refrigerator according to claim 3, wherein: The center track line of the curved segment of the positioning groove is recorded as the curved track line; the guide groove is curved; the center track line of the guide groove is recorded as the second track line, and the curved track line and the second track line are both convex cam curves; Wherein, the radius of the positioning axis is smaller than the minimum curvature radius of the curved track segment; and the radius of the guide axis is smaller than the minimum curvature radius of the second track line.

5. The refrigerator according to claim 3, wherein: The door body has a door rear wall arranged opposite to the door front wall when the door body is closed; The curved groove section protrudes toward the door side wall; along the direction from the door rear wall to the door front wall, the distance between the curved groove section and the door side wall gradually decreases; Along the direction from the second side wall of the box body to the first side wall, the distance between the guide groove and the plane where the door front wall is located when the door body is closed first gradually increases and then gradually decreases.

6. The refrigerator according to claim 3, wherein: The positioning shaft performs a linear motion along the linear groove section of the positioning groove, and the door body moves inward by a distance of ξ1 per unit angle of rotation; The positioning shaft performs a curved motion stage along the curved groove section of the positioning groove, and the door body moves inward by a distance of ξ2 per unit angle of rotation; wherein ξ1>ξ2.

7. The refrigerator according to claim 1, 2, 4, 5 or 6, characterized in that: When the door body is closed, within the projection of the plane where the top wall of the box body is located, the positioning groove is located on the side of the guide groove close to the door front wall; 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.

8. The refrigerator according to claim 1, 2, 4, 5 or 6, characterized in that: During the opening process of the door body, the positioning groove and the guide groove never intersect within the projection of the plane where the top wall of the box body is located.

9. The refrigerator according to claim 1, 2, 4, 5 or 6, 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 .

10. The refrigerator according to claim 1, 2, 4, 5 or 6, 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 .

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