Refrigerator

Abstract

This invention proposes a refrigerator, comprising a cabinet, a door, and a hinge disposed on the cabinet; the hinge has a linear positioning groove, a first hinge shaft, a second hinge shaft, and a first mating part; the door includes a front wall and a side wall; the end of the door near the hinge has an integrally formed and detachable mounting block and a door hinge; the mounting block has an annular guide groove and a second mating part located on the side of the guide groove away from the side wall and locked or unlocked with the first mating part; the door hinge is surrounded by the guide groove and mates with the positioning groove; during the process of the door opening from the closed state to a third angle G3, the first hinge shaft and the second hinge shaft move relative to the guide groove, and at least one of them contacts and mates with the guide groove; the movement of the door hinge relative to the positioning groove allows the door to move a certain distance towards the second side wall while rotating; the refrigerator of this invention ensures that the door does not extend beyond or excessively extend beyond the side of the cabinet when opened, thereby avoiding interference with the cabinet when the door is opened.

Description

Technical Field

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

[0002] In related technologies, the hinge structure of refrigerator doors is mostly of the single-axis type. The door rotates around the hinge axis by cooperating with the door's bushing. When the door is opened, the corner of the door will extend beyond the side of the refrigerator body.

[0003] For built-in refrigerators, which are typically placed inside cabinets, the corners of the door cannot extend too far beyond the cabinet dimensions when the door is opened to 90 degrees, thus limiting the refrigerator's usability. Summary of the Invention

[0004] This invention at least partially solves one of the technical problems in the related art.

[0005] Therefore, this application aims to provide a refrigerator whose hinge structure ensures that the door does not extend beyond or excessively extend beyond the side of the refrigerator body when opened.

[0006] The refrigerator according to this application includes:

[0007] The housing has a first body sidewall and a second body sidewall that are disposed opposite to each other;

[0008] A hinge is provided on the housing and close to the side wall of the first body; the hinge is provided with a straight positioning groove, a first hinge shaft, a second hinge shaft, and a first mating part away from the side wall of the first body;

[0009] A door body having a front wall away from the housing when the door body is closed, and a side wall close to the hinge and connected to the front wall;

[0010] The end of the door near the hinge is provided with:

[0011] The mounting block is integrally formed and detachably mounted on the door body; the mounting block has an annular guide groove and a second mating part located on the side of the guide groove away from the door sidewall and locked or unlocked with the first mating part;

[0012] A door hinge, which is surrounded by the guide groove and mates with the positioning groove;

[0013] During the process of the door opening from the closed state to the third angle G3, the first hinge shaft and the second hinge shaft move relative to the guide groove, and at least one of them contacts and engages with the guide groove; the door shaft moves relative to the positioning groove, so that the door can move inward a certain distance while rotating.

[0014] In one embodiment of this application, the guide groove includes a groove bottom and a circumferential groove wall surrounding the groove bottom; a plate is provided around the circumferential groove wall surrounding the guide groove;

[0015] The door body has a mounting groove formed at the end near the hinge, and a receiving cavity is formed on the bottom wall of the mounting groove; the plate body cooperates with the bottom wall of the mounting groove, and the guide groove is at least partially received in the receiving cavity.

[0016] In one embodiment of this application, the first mating part is a stop part, and the second mating part includes a root connection part and a hook part; one end of the root connection part is connected to the plate body, and the other end is connected to the hook part; the root connection part is fixedly connected to the door body.

[0017] When the door is closed, the hook part and the stop part are locked.

[0018] In one embodiment of this application, the free ends of both the hook portion and the stop portion are arc-shaped.

[0019] As one embodiment of this application, a first protrusion is provided on the bottom wall of the mounting groove. The first protrusion is located on the side of the receiving cavity away from the door side wall, and the first protrusion and the groove wall of the mounting groove near the front wall of the door together define a gap groove.

[0020] A plug plate is formed at the root joint, and the plug plate is installed in the gap groove.

[0021] In one embodiment of this application, the first hinge shaft is located on the side of the positioning groove close to the side wall of the first body; the second hinge shaft is located on the side of the positioning groove away from the side wall of the first body; the first hinge shaft has a first protruding ridge P1 that cooperates with the groove wall of the guide groove, and the second hinge shaft has a second protruding ridge Q1 that cooperates with the groove wall of the guide groove.

[0022] In one embodiment of this application, the inner wall of the guide groove defines a guide trajectory line K, and the centroid of the guide trajectory line K is denoted as the guide centroid O.

[0023] The guide trajectory line K includes a first guide segment K1, a second guide segment K2, a third guide segment K3, a fourth guide segment K4, and a fifth guide segment K5 that are connected end to end and all protrude toward the side away from the guide centroid O.

[0024] The connection point between the fifth guide segment K5 and the first guide segment K1 is denoted as the first inflection point A, and the connection points between the first guide segment K1, the second guide segment K2, the third guide segment K3, the fourth guide segment K4 and the fifth guide segment K5 are denoted as the second inflection point B, the third inflection point C, the fourth inflection point D and the fifth inflection point E, respectively.

[0025] The second inflection point B, the first inflection point A, the third inflection point C, the fifth inflection point E, and the fourth inflection point D are successively moved away from the side wall of the door;

[0026] The fifth inflection point E, the first inflection point A, the fourth inflection point D, the second inflection point B, and the third inflection point C are successively located near the front wall of the door.

[0027] In one embodiment of this application, when the door is closed, the first protruding ridge P1 engages with the first inflection point A, and the second protruding ridge Q1 engages with the fourth guide segment K4.

[0028] In one embodiment of this application, the door has a centroid plane F passing through the centroid of the door and parallel to the front wall of the door; the door opens from a third angle G3 to G... max During the process, the centroid plane F is always located between the first hinge axis and the second hinge axis.

[0029] As one embodiment of this application, the axis passing through the centroid of the cross section of the first hinge axis is denoted as the first centroidal axis P0, and the axis passing through the centroid of the cross section of the second hinge axis is denoted as the second centroidal axis Q0;

[0030] Within the projection of the top wall of the enclosure, the midpoint of line segment Q0P0 is denoted as the guide midpoint H; the door opens from the closed state to G. max During the process, the guide midpoint H is always located on the side of the centroid plane F away from the front wall of the door.

[0031] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0032] This invention proposes a refrigerator, comprising a cabinet, a door, and a hinge disposed on the cabinet; the hinge has a linear positioning groove, a first hinge shaft, a second hinge shaft, and a first mating part; the door includes a front wall and a side wall; the end of the door near the hinge has an integrally formed and detachable mounting block and a door hinge; the mounting block has an annular guide groove and a second mating part located on the side of the guide groove away from the side wall and locked or unlocked with the first mating part; the door hinge is surrounded by the guide groove and mates with the positioning groove; during the process of the door opening from the closed state to a third angle G3, the first hinge shaft and the second hinge shaft move relative to the guide groove, and at least one of them contacts and mates with the guide groove; the movement of the door hinge relative to the positioning groove allows the door to move a certain distance towards the second side wall while rotating; the refrigerator of this invention ensures that the door does not extend beyond or excessively extend beyond the side of the cabinet when opened, thereby avoiding interference with the cabinet when the door is opened. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a perspective view of the refrigerator of the present invention;

[0035] Figure 2 This is a top view of the refrigerator of the present invention;

[0036] Figure 3 yes Figure 2 A partial structural diagram;

[0037] Figure 4 This is a schematic diagram of the hinge structure of the refrigerator of the present invention;

[0038] Figure 5 This is an exploded structural diagram of the hinge and door of the refrigerator in the upper right corner of the present invention.

[0039] Figure 6 This is an exploded structural diagram of the hinge and door of the refrigerator in the upper right corner of the present invention from another perspective.

[0040] Figure 7 This is a schematic diagram of the hinge structure when the refrigerator door of the present invention is in the closed state;

[0041] Figure 8 The refrigerator door of this invention opens to... A schematic diagram of the structure at the hinge;

[0042] Figure 9 The refrigerator door of this invention opens to... A schematic diagram of the structure at the hinge;

[0043] Figure 10 The refrigerator door of this invention opens to... A schematic diagram of the structure at the hinge;

[0044] Figure 11 The refrigerator door of this invention opens to... A schematic diagram of the structure at the hinge;

[0045] Figure 12 The refrigerator door of this invention opens to... A schematic diagram of the structure at the hinge;

[0046] Figure 13 The refrigerator door of this invention opens from the closed state to... A schematic diagram of the motion trajectories of the first and second lateral edges;

[0047] Figure 14 The refrigerator door of this invention opens to... A schematic diagram showing the movement of the guide groove relative to the first and second hinge axes, and the door hinge relative to the positioning groove;

[0048] Figure 15 The refrigerator door of this invention opens to... A schematic diagram showing the movement of the guide groove relative to the first and second hinge axes, and the door hinge relative to the positioning groove;

[0049] Figure 16 The refrigerator door of this invention opens to... A schematic diagram showing the movement of the guide groove relative to the first and second hinge axes, and the door hinge relative to the positioning groove;

[0050] Figure 17 The refrigerator door of this invention opens to... A schematic diagram showing the movement of the guide groove relative to the first and second hinge axes, and the door hinge relative to the positioning groove;

[0051] Figure 18 The refrigerator door of this invention opens to... A schematic diagram showing the movement of the guide groove relative to the first and second hinge axes, and the door hinge relative to the positioning groove;

[0052] Figure 19 The refrigerator door of this invention opens from the closed state to... A schematic diagram showing the movement of the guide groove relative to the first and second hinge axes, and the door hinge relative to the positioning groove;

[0053] Figure 20 The refrigerator door of this invention is made of Open to A schematic diagram showing the movement of the guide groove relative to the first and second hinge axes, and the door hinge relative to the positioning groove;

[0054] Figure 21 The refrigerator door of this invention opens from the closed state to... A schematic diagram showing the movement of the guide groove relative to the first and second hinge axes, and the door hinge relative to the positioning groove;

[0055] Figure 22 This is an exploded structural diagram of the door end cover and mounting block at the upper end of the refrigerator door of the present invention;

[0056] Figure 23 This is an exploded structural diagram of the door end cover and mounting block at the lower end of the refrigerator door of the present invention;

[0057] Figure 24 This is a schematic diagram of the assembly of the door end cover and the mounting block at the lower end of the refrigerator door of the present invention;

[0058] Figure 25 This is a schematic diagram showing the relative positions of the hinge plate and the locking structure when the refrigerator door of the present invention is closed;

[0059] Figure 26 This is a schematic diagram showing the relative positions of the hinge plate and the locking structure when the refrigerator door of the present invention is opened to G1.

[0060] Figure 27 This is a schematic diagram showing the relative positions of the hinge plate and the locking structure when the refrigerator door of the present invention is opened to 90°;

[0061] Figure 28 This is an exploded structural diagram of the door end cover and mounting block at the upper end of the door in another embodiment of the refrigerator of the present invention.

[0062] Figure 29 This is a schematic diagram showing the disassembled structure of the door end cover and mounting block at the lower end of the door in another embodiment of the refrigerator of the present invention.

[0063] Figure 30 yes Figure 29 A schematic diagram of the assembly of the door end cover and the mounting block at the lower end of the middle door body.

[0064] In the above figures: Box body 10; Cabinet 100; Door body 30; Front wall of door 31; Side wall of door 32; Rear wall of door 33; First side edge W; Second side edge N; Hinge plate 40; Connecting part 401; Extension part 402; Stop part 403; Hook gap 404; Mounting groove 34; Receiving cavity 35; First protrusion 36; Gap groove 37; Door end cover 38; Recess 39; Mounting block 80; Plate body 81; Lock hook 82; Root joint 83; Hook part 84; Limiting part 85; Embedded part 86; Limiting strip 87; Reference plane M0; First reference plane M1; Second reference plane M2; Positioning groove 5; First hinge shaft 4 1; Second hinge shaft 42; First protruding ridge P1; Second protruding ridge Q1; First centroidal shaft P0; Second centroidal shaft Q0; Guide groove 6; Door hinge 7; Positioning center shaft I; Fixing block 70; Groove bottom 60; Circumferential groove wall 61; Groove opening 63; Through hole 64; Bushing 65; Positioning trajectory line S; Starting positioning point I0; First positioning point I1; Second positioning point I2; Third positioning point I3; Guide trajectory line K; First guide segment K1; Second guide segment K2; Third guide segment K3; Fourth guide segment K4; Fifth guide segment K5; First inflection point A; Second inflection point B; Third inflection point C; Fourth inflection point D; Fifth inflection point E. Detailed Implementation

[0065] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0066] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0067] The terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "third," "fourth," or "fifth" may explicitly or implicitly include one or more of that feature.

[0068] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0069] In the following description, embodiments of this application will be described in detail with reference to the accompanying drawings. In the drawings, the side of the refrigerator facing the user when in use is defined as the front side, and the opposite side is defined as the rear side.

[0070] Reference Figure 1 The refrigerator includes a cabinet 10 having storage compartments, a door 30 connected to the cabinet 10 for opening and closing the storage compartments, and a refrigeration unit for supplying cold air to the storage compartments. The cabinet 10 includes an inner liner defining the storage compartments, an outer shell connected to the outer side of the inner liner to form the appearance of the refrigerator, and an insulation layer disposed between the inner liner and the outer shell to insulate the storage compartments. The cabinet 10 defines a plurality of storage compartments. In this embodiment, the plurality of storage compartments includes a refrigerator compartment and a freezer compartment located below the refrigerator compartment; it should be noted that the arrangement of the plurality of storage compartments in the refrigerator is not limited to the examples described above.

[0071] The front end of the storage compartment has an opening for placing food into or taking food out of the storage compartment; the cabinet 10 is provided with a rotatable door 30 to open or close the opening of the storage compartment. Specifically, the door 30 has an upper hinge and a lower hinge that are rotatably connected to the cabinet 10.

[0072] The enclosure 10 includes a first side wall and a second side wall (i.e., the left side wall and the right side wall of the enclosure 10) disposed opposite to each other; a hinge is disposed on the enclosure 10 and close to the first side wall; the door 30 has a front wall 31 that is away from the enclosure 10 when the door 30 is closed, a rear wall 33 that is disposed opposite to the front wall 31, and a side wall 32 that is close to the hinge and connected to the front wall 31; for example, when the hinge is located on the right side of the enclosure 10, the right side of the door 30 is the side wall 32; when the hinge is located on the left side of the enclosure 10, the left side of the door 30 is the side wall 32.

[0073] The front wall 31 and side wall 32 of the door 30 intersect to form a first side edge W, and the side wall 32 intersects with the rear wall 33 to form a second side wall N. When the door 30 is closed, the first side edge W is located on the side of the second side edge N away from the housing 10. It should be noted that when both the front wall 31 and the side wall 32 are planes, the intersection line of the two planes is theoretically the first side edge W. In specific manufacturing, based on the rounded transition at the intersection of the front wall 31 and the side wall 32, a curved surface is formed, and any vertical line extending along the length of the door 30 on this curved surface can represent the first side edge W. Similarly, with the rounded transition of the front wall 31 and the side wall 32, the intersection line of the planes where the front wall 31 and the side wall 32 are located, or a vertical line that is close to and parallel to them, can also be used to represent the movement of the first side edge W. In addition, in this embodiment, the plane passing through the center of mass of the door 30 and parallel to the front wall 31 of the door is denoted as the center of mass plane F; during the opening of the door 30, the center of mass plane F moves with the door 30.

[0074] Reference Figures 2 to 6 The hinge has a first hinge shaft 41, a second hinge shaft 42 located on the side of the first hinge shaft 41 away from the side wall of the first body, and a positioning groove 5 located between the first hinge shaft 41 and the second hinge shaft 42.

[0075] A guide groove 6 is provided at the end of the door body 30 near the hinge, and a door hinge 7 is provided on the bottom 60 of the guide groove 6. Both the first hinge shaft 41 and the second hinge shaft 42 are adapted to the guide groove 6, and the door hinge 7 is adapted to the positioning groove 5. During the opening or closing of the door body 30, the door hinge 7 moves relative to the positioning groove 5, and the guide groove 6 moves relative to the first hinge shaft 41 and the second hinge shaft 42 (it should be noted that the positioning groove 5, the first hinge shaft 41, and the second hinge shaft 42 are all fixed to the hinge shafts, that is, the movement of the guide groove 6 relative to the first hinge shaft 41 can also be represented by the movement of the guide groove 6 relative to the positioning groove 5). As an optional configuration, during the opening of the door body 30, at least one of the first hinge shaft 41 and the second hinge shaft 42 contacts the groove wall of the guide groove 6 and moves relative to the guide groove 6.

[0076] As one possible configuration, when the door 30 is closed, in the projection onto the top wall of the housing 10, the first hinge shaft 41, the second hinge shaft 42, and the positioning groove 5 are all located within the bottom area of ​​the guide groove 6. The first hinge shaft 41 is located on the side of the positioning groove 5 closest to the first body sidewall, and the second hinge shaft 42 is located on the side of the positioning groove 5 furthest from the first body sidewall. As another possible configuration, when the door 30 is closed, the positioning groove 5 is positioned relative to the front wall 31, near the rear wall 33 (access opening). This configuration guides the positioning groove to the corner positions of the door 30 near the rear wall 33 and the side wall 32, effectively balancing the external force applied to the corner of the front wall 31 furthest from the side wall 32 used to drive the door 30 to open, thereby reducing the shaking of the door 30 and increasing the stability of the door 30 when open.

[0077] The hinge includes a hinge plate 40 fixedly connected to the housing 10. The hinge plate 40 includes a connecting portion 401 connected to the housing 10 and a horizontal, plate-shaped extension 402 extending forward from the connecting portion 401. The connecting portion 401 can be fastened to the top wall of the housing 10 by fasteners such as screws, pins, and bolts.

[0078] Specifically, the hinge at the upper end of the door 30 includes a hinge plate 40 connected to the upper end of the housing 10. A first hinge shaft 41 and a second hinge shaft 42 are connected to the hinge plate 40 to form a limiting axis guiding the movement of the door 30. The hinge plate 40, the first hinge shaft 41, and the second hinge shaft 42 can be integrally formed or can be provided separately and assembled with each other. The first hinge shaft 41 and the second hinge shaft 42 are formed on the extension 402 and extend towards the side of the door 30. The two first hinge shafts 41 on the hinges at the upper and lower ends of the door 30 are vertically aligned, and the two second hinge shafts 42 are also vertically aligned.

[0079] Corresponding to the position of the hinge plate 40, both the upper and lower ends of the door body 30 are provided with guide grooves 6 and door hinges 7. The two guide grooves 6 at the upper and lower ends of the door body 30 are vertically aligned, and the two door hinges 7 are vertically aligned, so that the movement of the upper and lower ends of the door body 30 is consistent, thereby making the opening or closing of the door body 30 smoother.

[0080] In this embodiment, we continue to refer to... Figure 2 The plane containing the side of the cabinet 10 closest to the hinge plate 40 (the first body sidewall) is defined as the reference plane M0. The refrigerator is housed in the cabinet 100. The side of the reference plane M0 closest to the cabinet 100 is the outer side, and the opposite side closest to the storage compartment is the inner side. When the refrigerator is placed in the cabinet 100, to prevent damage from uneven ground or cabinet 100 deformation, the distance α between the cabinet 100 and the refrigerator's side (the first body sidewall, i.e., the reference plane M0) can be set to 3mm to 5mm. To ensure the refrigerator door 30 opens normally, its first side edge W should not extend too far beyond the side of the cabinet 10 (reference plane M0) during rotation, to avoid collision between the first side edge W and the cabinet 100, which could prevent the door 30 from opening properly.

[0081] like Figure 3 As shown, in this embodiment, the positioning groove 5 is set as a straight groove. In one implementation, the positioning groove 5 is parallel to the plane where the pick-up / placement opening is located. In another possible implementation, along the direction from the first body sidewall to the second body sidewall, the straight groove is inclined away from the pick-up / placement opening; that is, along the direction from the first body sidewall to the second body sidewall, the distance between the straight groove and the pick-up / placement opening gradually increases, so that the door 30 moves forward during opening, thereby avoiding interference between the door 30 and the housing 10. In this embodiment, for ease of description, the example of the positioning groove 5 being parallel to the plane where the pick-up / placement opening is located will be used. The center trajectory line of the positioning groove 5 is denoted as the positioning trajectory line S, and due to the shape of the positioning groove 5, the positioning trajectory line S is a straight line.

[0082] The first hinge shaft 41 has a first protruding ridge P1 on the side away from the second hinge shaft 42; the second hinge shaft 42 has a second protruding ridge Q1 on the side away from the first hinge shaft 41; wherein the first hinge shaft 41 and the second hinge shaft 42 are located on opposite sides of the positioning groove 5. That is, the first hinge shaft 41 and the second hinge shaft 42 are located at adjacent positions at opposite ends of the positioning groove. In this embodiment, the first hinge shaft 41 is located on the side of the positioning groove 5 closer to the first body sidewall; the second hinge shaft 42 is located on the side of the positioning groove 5 away from the first body sidewall. The first protruding ridge P1 and the second protruding ridge Q1 are adapted to the guide groove 6 provided on the door body 30. During the opening or closing of the door body 30, the first protruding ridge P1 and the second protruding ridge Q1 move relative to the guide groove 6. Specifically, during the opening of the door body 30, at least one of the first protruding ridge P1 and the second protruding ridge Q1 engages with the groove wall of the guide groove 6. It should be noted that in this embodiment, the engagement of the first protruding ridge P1 and the second protruding ridge Q1 with the groove wall of the guide groove 6 is a clearance fit. As one feasible approach, the clearance range of this clearance fit is 0–2 mm. As another feasible approach, during the opening of the door 30, at least one of the first protruding ridge P1 and the second protruding ridge Q1 has a clearance of 0 with the guide groove 6 wall; that is, at least one of the first protruding ridge P1 and the second protruding ridge Q1 is in contact with the guide trajectory line K. As another feasible approach, during the opening of the door 30, the clearance between one of the first hinge shaft 41 and the second hinge shaft 42 and the guide groove 6 wall is greater than 0; that is, one of the first hinge shaft 41 and the second hinge shaft 42 has a gap with the guide trajectory line K, while the other is in contact with the guide trajectory line K. These settings ensure the stability of the door opening and effectively prevent jamming during the opening of the door 30. In some embodiments of this application, the cross-sections of the first hinge shaft 41 and the second hinge shaft 42 are both rhomboid, that is, the first hinge shaft 41 and the second hinge shaft 42 are both quadrangular prisms with a rhomboid base; the side edges of the quadrangular prism-shaped first hinge shaft 41 and the second hinge shaft 42 near the guide groove 6 are corresponding convex edges.

[0083] In the projection of the top wall of the housing 10, the straight line containing the first protruding ridge P1 and the second protruding ridge Q1 is denoted as the first straight line Q1P1. The distance between the first straight line Q1P1 and the positioning trajectory line S is any value between 0 and 2 mm. As one possible configuration, the first protruding ridge P1 and the second protruding ridge Q1 are located on the positioning trajectory line S. This configuration defines the positions of the first protruding ridge P1 and the second protruding ridge Q1 relative to the positioning groove 5, ensuring that when the door 30 is opened, the positions of the central axis of the door hinge 7, the first protruding ridge P1, and the second protruding ridge Q1 are approximately on a straight line (including on the same straight line). This increases the balance of force on each component during the opening of the door 30, effectively ensuring the smoothness and stability of the door 30's opening. Alternatively, the first straight line Q1P1 is parallel to the plane containing the retrieval port. Furthermore, when the door 30 is closed, the first straight line Q1P1 is located on the side of the centroid plane F closest to the rear wall 33 of the door. When the door 30 is opened, an external force is applied to the corner of the front wall 31 away from the side wall 32. In this embodiment, the first hinge shaft 41 and the second hinge shaft 42 mainly guide the door 30 near the corner of the rear wall 33 and the side wall 32, so as to effectively balance the external force driving the door 30 to open, thereby reducing the shaking of the door 30 and increasing the stability of the door 30 when it is opened.

[0084] The axis passing through the centroid of the cross section of the first hinge shaft 41 is denoted as the first centroidal axis P0, and the axis passing through the centroid of the cross section of the second hinge shaft 42 is denoted as the second centroidal axis Q0. The first centroidal axis P0 is located on the side of the first protruding ridge P1 near the centroid of the guide groove 6, and the second centroidal axis Q0 is located on the side of the second protruding ridge Q1 near the centroid of the guide groove 6. In this embodiment, the first centroidal axis P0 is located on the side of the first protruding ridge P1 near the centroid of the positioning groove 5, and the second centroidal axis Q0 is located on the side of the second protruding ridge Q1 near the centroid of the positioning groove 5. That is, the main body of the first hinge shaft 41 is located on the side of the first protruding ridge P1 near the centroid of the guide groove 6; the main body of the second hinge shaft 42 is also located on the side of the second protruding ridge Q1 near the centroid of the guide groove 6, to avoid interference between the main body of the hinge shaft and the guide groove 6, thus affecting its movement relative to the guide groove 6.

[0085] See Figure 3Within the projection of the top wall of the housing 10, the line segment where the first centroidal axis P0 and the first convex ridge P1 lie is denoted as the first line segment P0P1; the line segment where the second centroidal axis Q0 and the second convex ridge Q1 lie is denoted as the second line segment Q0Q1. The angle between the first line segment P0P1 and the first straight line Q1P1 is denoted as the first included angle γ1, where γ1 ∈ [30°, 35°]. The angle between the second line segment Q0Q1 and the first straight line Q1P1 is denoted as the second included angle γ2, where γ2 ∈ [30°, 35°]. In this embodiment, γ1 = γ2. As one possible implementation, line segment Q1P1 shares a perpendicular bisector with the positioning trajectory line S, that is, the first convex ridge P1 and the second convex ridge Q1 are symmetrically distributed on opposite sides of the perpendicular bisector of the positioning trajectory line S. The above effectively defines the position of the first protrusion P1 on the first hinge shaft 41 and the position of the second protrusion Q1 on the second hinge shaft 42. On the one hand, it ensures the strength of the first hinge shaft 41 and the second hinge shaft 42, and on the other hand, it avoids the large cross section of the hinge shaft from interfering with the guide groove 6 and affecting its movement relative to the guide groove 6.

[0086] In this embodiment, the wall of the guide groove 6 is annular; when the door 30 is closed, the wall of the guide groove 6 surrounds the positioning groove 5, the first hinge shaft 41, and the second hinge shaft 42; that is, the positioning groove 5, the first hinge shaft 41, and the second hinge shaft 42 are located inside the annular guide groove 6. In this embodiment, the inner wall of the guide groove 6 defines a guide trajectory line K, and the centroid of the guide trajectory line K is denoted as the guide centroid O; in this embodiment, the guide trajectory line K surrounds its guide centroid O.

[0087] In some embodiments of this application, the guide trajectory line K includes a first guide segment K1, a second guide segment K2, a third guide segment K3, a fourth guide segment K4, and a fifth guide segment K5 connected end to end in sequence; that is, the guide trajectory line K is a closed loop, and the guide groove 6 is an annular closed groove, so as to effectively limit the movement of the first hinge shaft 41 and the second hinge shaft 42, while preventing the first hinge shaft 41 and the second hinge shaft 42 from disengaging from the guide groove 6. The connection point between the fifth guide segment K5 and the first guide segment K1 is denoted as the first inflection point A, the connection point between the first guide segment K1 and the second guide segment K2 is denoted as the second inflection point B, the connection point between the second guide segment K2 and the third guide segment K3 is denoted as the third inflection point C, the connection point between the third guide segment K3 and the fourth guide segment K4 is denoted as the fourth inflection point D, and the connection point between the fourth guide segment K4 and the fifth guide segment K5 is denoted as the fifth inflection point E.

[0088] When the door 30 is closed, the first protruding ridge P1 on the first hinge shaft 41 engages with the first inflection point A of the guide groove 6. That is, when the door 30 is closed, the first protruding ridge P1 is located at the first inflection point A.

[0089] Among them, the second inflection point B is located on the side of the first inflection point A that is close to the door side wall 32 and the door front wall 31;

[0090] The third inflection point C is located on the side of the second inflection point B that is close to the front wall 31 and far away from the side wall 32 of the door; in this embodiment, the third inflection point C is located on the side of the first inflection point A that is far away from the side wall 32 of the door.

[0091] The fourth inflection point D is located on the side of the third inflection point C that is close to the rear wall 33 of the door and away from the side wall 32 of the door, and the fourth inflection point D is located on the side of the second inflection point B that is close to the rear wall 33 of the door; in this embodiment, the fourth inflection point D is located on the side of the first inflection point A that is close to the front wall 31 of the door.

[0092] The fifth inflection point E is located on the side of the fourth inflection point D that is close to the rear wall 33 and the side wall 32 of the door; in this embodiment, the fifth inflection point E is located on the side of the first inflection point A that is close to the rear wall 33 and far away from the side wall 32 of the door.

[0093] In the projection of the plane containing the front wall 31, the second inflection point B, the first inflection point A, the third inflection point C, the fifth inflection point E, and the fourth inflection point D are sequentially moved away from the side wall 32. In this embodiment, the third inflection point C and the fifth inflection point E are adjacent to each other in the projection of the plane containing the front wall 31. Alternatively, the distance between the third inflection point C and the fifth inflection point E in the projection of the plane containing the front wall 31 can be set to be less than 1 mm.

[0094] In the projection of the plane containing the door side wall 32, the fifth inflection point E, the first inflection point A, the fourth inflection point D, the second inflection point B, and the third inflection point C are sequentially moved away from the rear wall 33 (closer to the front wall 31). In this embodiment, in the projection of the plane containing the front wall 31, the fourth inflection point D is closer to the first inflection point A than the second inflection point B. Alternatively, in the projection of the plane containing the door side wall 32, the first inflection point A and the fourth inflection point D are adjacent. Alternatively, in the projection of the plane containing the door side wall 32, the distance between the first inflection point A and the fourth inflection point D is less than 5mm.

[0095] The guide groove surrounds its guide centroid O, and the first guide segment K1, the second guide segment K2, the third guide segment K3, the fourth guide segment K4 and the fifth guide segment K5 all protrude in a direction away from the guide centroid O of the bottom wall of the guide groove 6.

[0096] Along the direction from the rear wall 33 to the front wall 31, the distance between the first guide segment K1 and the door side wall 32 gradually decreases; the distance between the second guide segment K2 and the door side wall 32 gradually increases; the distance between the third guide segment K3 and the door side wall 32 gradually decreases; the distance between the fourth guide segment K4 and the door side wall 32 gradually increases; and the distance between the fifth guide segment K5 and the door side wall 32 gradually decreases. Alternatively, the distance between the fifth guide segment K5 and the door side wall 32 may first gradually decrease and then gradually increase, before connecting with the first guide segment K1 at the first inflection point A.

[0097] That is, in this embodiment, the second inflection point B is the point of the guide groove 6 closest to the door side wall 32, the fourth inflection point D is the point of the guide groove furthest from the door side wall 32; the third inflection point C is the point of the guide groove 6 closest to the front wall 31 of the door, and the fifth inflection point E is the point of the guide groove closest to the rear wall 33 of the door.

[0098] As one possible implementation, when the door 30 is closed, the first protruding edge P1 of the first hinge shaft 41 engages with the first inflection point A of the guide groove 6; the second protruding edge Q1 of the second hinge shaft 42 corresponds to the position of the fourth guide segment K4; in this embodiment, when the door 30 is closed, the second protruding edge Q1 and the fourth guide segment K4 are separated; that is, there is a gap between the second protruding edge Q1 and the fourth guide segment K4.

[0099] In this embodiment, the central axis of the door hinge 7 is denoted as the positioning central axis I, and the central trajectory line (positioning trajectory line S) of the positioning groove 5 includes the starting positioning point I0 and the third positioning point I3; wherein, the third positioning point I3 is located on the side of the starting positioning point I0 away from the side wall of the first body; the positioning trajectory line S extends from the starting positioning point I0 along a straight line to the third positioning point I3; during the opening of the door body 30, the positioning central axis I moves relative to the positioning trajectory line S.

[0100] In this embodiment, the line segment with the centroid O of the positioning center axis I and the guide trajectory line K as endpoints within the projection of the top wall of the housing 10 is denoted as the axis segment IO. In this embodiment, the guide groove 6 and the door hinge 7 are disposed on the door body 30, and the positioning groove 5, the first hinge axis 41, and the second hinge axis 42 are fixed to the housing 10 by hinges. The movement of the door body 30 relative to the housing 10 is equivalent to relative movement in a plane parallel to the top wall of the housing 10. In the plane parallel to the top wall of the housing 10, the movement of the door body 30 relative to the housing 10 is equivalent to the movement of the guide groove 6 relative to the hinge, and also equivalent to the movement of the door body 30 relative to the housing 10. In this embodiment, for ease of explanation, the axis segment IO represents the movement of the door body 30, and the positioning center axis I represents the movement of the door hinge 7.

[0101] When the door 30 is opened, there is a relative motion relationship between the positioning groove 5 and the door hinge 7, and between the first hinge shaft 41 or the second hinge shaft 42 and the guide groove 6. In this embodiment, for ease of description, the hinge (positioning groove 5, first hinge shaft 41 and second hinge shaft 42) is used as a stationary reference, the guide groove 6 moves relative to the first hinge shaft 41 and the second hinge shaft 42, and the door hinge 7 moves relative to the positioning groove 5, so as to illustrate the specific process of opening the door 30.

[0102] like Figures 7-21As shown, the movement of the door hinge 7 along the positioning groove 5 is equivalent to the movement of the positioning center axis I along the positioning trajectory line S; the movement of the guide groove 6 relative to the first hinge axis 41 and the second hinge axis 42 is equivalent to the movement of the guide trajectory line K relative to the first protrusion P1 and the second protrusion Q1.

[0103] In this embodiment, the maximum opening angle G of the refrigerator max The angle >90° will be used as an example. The door 30 opens from the closed state to its maximum angle G. max During the process, when the door 30 rotates open to a specific angle, the relative positions of the door hinge 7 with respect to the positioning groove 5, and the relative positions of the guide groove 6 with respect to the first protruding edge P1 of the first hinge shaft 41 and the second protruding edge Q1 of the second hinge shaft 42 are as follows:

[0104] in, This indicates the opening angle of door 30, and the opening angle when door 30 is closed.

[0105] like Figure 7 As shown, At this time, the door 30 is in the closed state; the positioning center axis I is located at the starting positioning point I0 of the positioning trajectory line S. That is, when the door 30 is closed, the door hinge 7 is located at the end of the positioning groove 5 near the door side wall 32. The first protruding ridge P1 engages with the first inflection point A of the guide trajectory line K, and the second protruding ridge Q1 engages with the fourth guide segment K4. At this time ( (At time), the position of the guide centroid O is recorded as O0; the positions of the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 relative to the hinge are recorded as A0, B0, C0, D0, and E0 respectively.

[0106] As one feasible approach, when the door 30 is closed, a reserved gap exists between the second protruding ridge Q1 and the fourth guide segment K4, meaning that the second protruding ridge Q1 and the fourth guide segment K4 do not contact each other at this time; while the first protruding ridge P1 contacts the first inflection point A of the guide trajectory line K. Furthermore, when the door 30 is in the closed state, the centroidal plane F of the door 30 is located on the side of the positioning groove 5, the first hinge axis 41, and the second hinge axis 42 closest to the front wall 31. That is, when the door 30 is closed, the centroidal plane F is not between the first hinge axis 41 and the second hinge axis 42.

[0107] like Figure 8 As shown, During the process of opening the door 30 from the closed state to G2, the positioning center axis I moves inward (towards the side wall of the second body) along the positioning trajectory line S; the first guide segment K1 engages with the first protrusion P1, and the first guide segment K1 rotates counterclockwise relative to the first protrusion P1 and moves inward (towards the side wall of the second body); the fourth guide segment K4 engages with the second protrusion Q1, and the fourth guide segment K4 rotates counterclockwise relative to the second protrusion Q1 and moves inward (towards the side wall of the second body). Furthermore, during the process of opening the door 30 from the closed state to G2, the center of mass plane F of the door 30 is located on the side of the positioning groove 5, the first hinge axis 41, and the second hinge axis 42 away from the loading / unloading opening. That is, during the process of opening the door 30 from the closed state to G2, the center of mass plane F is not between the first hinge axis 41 and the second hinge axis 42.

[0108] The above describes the door opening angle of 30 degrees. At the same time, the movement trend within the opening angle range remains consistent; the only differences are: with different opening angles, the position of the first protruding ridge P1 relative to the first guide segment K1 of the guide trajectory line K is different, the position of the second protruding ridge Q1 relative to the fourth guide segment K4 of the guide trajectory line K is different, and the position of the door hinge 7 relative to the positioning groove 5 is different. Thus, the opening angle... When the door is opened to the corresponding section, selecting one of the opening angles represents the relative positions of the first protruding ridge P1 and the second protruding ridge Q1 with the guide groove 6, and the relative positions of the door hinge 7 and the positioning groove 5. Specifically, for example... Figure 8 and Figure 14 As shown, with This represents the position within the opening angle range, for comparison with other states when the door 30 is opened.

[0109] like Figure 8 and Figure 14 As shown, when the door 30 is opened G1, the positioning center axis I is located at the first positioning point I1 of the positioning trajectory line S; wherein, the first positioning point I1 is located on the side of the initial positioning point I0 away from the door sidewall 32; the first guide segment K1 of the guide trajectory line K cooperates with the first protruding ridge P1, and the fourth guide segment K4 cooperates with the second protruding ridge Q1. At this time ( (At time), the position of the guide centroid O relative to the hinge is recorded as O1; the positions of the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 relative to the hinge are recorded as A1, B1, C1, D1, and E1, respectively. As a configurable method, Any one of these values.

[0110] like Figure 9 , Figure 15 As shown, At this time, the door 30 rotates open to G2; the positioning center axis I is located at the second positioning point I2 of the positioning trajectory line S; wherein, the second positioning point I2 is located on the side of the first positioning point I1 away from the door sidewall 32. The first protruding ridge P1 engages with the second inflection point B of the guide trajectory line K, and the second protruding ridge Q1 engages with the fourth guide segment K4. At this time ( (At time), the position of the guide centroid O relative to the hinge is recorded as O2; the positions of the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 relative to the hinge are recorded as A2, B2, C2, D2, and E2 respectively.

[0111] As an feasible approach, when the door 30 is opened to G2, there is a reserved gap between the second protruding ridge Q1 and the fourth guide segment K4, meaning that the second protruding ridge Q1 and the fourth guide segment K4 do not contact each other at this time; while the first protruding ridge P1 contacts the second inflection point B of the guide trajectory line K. In other words, as an feasible approach, when the door 30 is opened from the closed state to G2, there is a reserved gap between the second protruding ridge Q1 and the guide trajectory line K, meaning that the second protruding ridge Q1 and the guide trajectory line K do not contact each other at this time; while the first protruding ridge P1 contacts the guide trajectory line K. Specifically, when the door 30 is opened from the closed state to G2, the first protruding ridge P1 is always in contact with the guide trajectory line K, and the second protruding ridge Q1 has a gap with the guide trajectory line K at least when opened to certain specific angles. This configuration effectively prevents jamming during the opening of the door 30. Furthermore, when the door 30 is opened to G2, the centroid plane F of the door 30 is located between the first hinge axis 41 and the second hinge axis 42. In this embodiment, when the door 30 is opened to G2, the center of mass plane F is closer to the first hinge axis 41 relative to the second hinge axis 42. As an optional configuration, Any one of these values.

[0112] like Figure 10 As shown, During the process of opening the door 30 from G2 to G3, the positioning center axis I moves inward (towards the side wall of the second body) along the positioning trajectory line S; the second guide segment K2 engages with the first protruding ridge P1, and the second guide segment K2 rotates counterclockwise relative to the first protruding ridge P1 and moves inward (towards the side wall of the second body); the fourth guide segment K4 engages with the second protruding ridge Q1, and the fourth guide segment K4 rotates counterclockwise relative to the second protruding ridge Q1 and moves inward (towards the side wall of the second body). Furthermore, during the process of opening the door 30 from G2 to G3, the center of mass plane F of the door 30 is located between the first hinge axis 41 and the second hinge axis 42. In this embodiment, during the process of opening the door 30 from G2 to G3, as the opening angle increases, the center of mass plane F moves towards the side closer to the second hinge axis 42.

[0113] The above describes the door opening angle of 30 degrees. At the same time, the movement trend within the opening angle range remains consistent; the only differences are: with different opening angles, the position of the first protruding ridge P1 relative to the second guide segment K2 of the guide trajectory line K is different, the position of the second protruding ridge Q1 relative to the fourth guide segment K4 of the guide trajectory line K is different, and the position of the door hinge 7 relative to the positioning groove 5 is different. Thus, the opening angle... When the door is opened to the corresponding section, selecting one of the opening angles represents the relative positions of the first protruding ridge P1 and the second protruding ridge Q1 with the guide groove 6, and the relative positions of the door hinge 7 and the positioning groove 5. Specifically, for example... Figure 10 and Figure 16 As shown, with This represents the position within the opening angle range, for comparison with other states when the door 30 is opened.

[0114] like Figure 10 and Figure 16 As shown, when the door 30 is opened to G3, the positioning center axis I is located at the third positioning point I3 of the positioning trajectory line S; wherein, the third positioning point I3 is located on the side of the second positioning point I2 away from the door side wall 32, and the third positioning point I3 is the endpoint of the positioning trajectory line S away from the door side wall 32. That is, when the door is opened to G3, the door hinge 7 moves to the end of the positioning groove 5 away from the door side wall 32, and it cannot continue to move along the positioning groove 5 in the direction away from the door side wall 32. In addition, when the door 30 is opened to G3, the second guide segment K2 of the guide trajectory line K cooperates with the first protrusion P1, and the fourth guide segment K4 cooperates with the second protrusion Q1. At this time ( (At time), the position of the guide centroid O relative to the hinge is recorded as O3; the positions of the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 relative to the hinge are recorded as A3, B3, C3, D3, and E3 respectively.

[0115] As a configurable method, Any one of these values.

[0116] like Figure 11 As shown, During the process of opening the door 30 from G3 to G4, the positioning center axis I remains at the third positioning point I3 on ​​the positioning trajectory line S. The second guide segment K2 engages with the first protrusion P1, and rotates counterclockwise relative to the first protrusion P1. The fourth guide segment K4 engages with the second protrusion Q1, and rotates counterclockwise relative to the second protrusion Q1. In other words, during the process of opening the door 30 from G3 to G4, the guide groove 6 rotates simply around the positioning center axis I. Furthermore, during the process of opening the door 30 from G2 to G3, the center of mass plane F of the door 30 is located between the first hinge axis 41 and the second hinge axis 42.

[0117] The above describes the door opening angle of 30 degrees. At the same time, the movement trend within the opening angle range remains consistent; the only difference lies in the position of the first convex ridge P1 relative to the second guide segment K2 of the guide trajectory line K, and the position of the second convex ridge Q1 relative to the fourth guide segment K4 of the guide trajectory line K. Thus, the opening angle... When the door is opened to the corresponding section, selecting one of the opening angles represents the relative positions of the first protruding ridge P1 and the second protruding ridge Q1 with the guide groove 6, and the relative positions of the door hinge 7 and the positioning groove 5. Specifically, for example... Figure 11 and Figure 17 As shown, with This represents the position within the opening angle range, for comparison with other states when the door 30 is opened.

[0118] As one feasible approach, when the door 30 is opened to G4, the positioning center axis I is located at the third positioning point I3 of the positioning trajectory line S. The first protruding ridge P1 engages with the third inflection point C of the guide trajectory line K, and the second protruding ridge Q1 engages with the fifth inflection point E of the guide trajectory line K. At this time ( When the guide centroid O is located relative to the hinge, it is denoted as O4; the positions of the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 relative to the hinge are denoted as A4, B4, C4, D4, and E4, respectively. In this embodiment, G4 = 90°. It can be set, and G4 ∈ [88°, 92°] for any value. That is, as a settable method, when the door 30 is opened to about 90°, the first convex rib P1 engages with the third inflection point C of the guide trajectory line K, and the second convex rib Q1 engages with the fifth inflection point E of the guide trajectory line K.

[0119] like Figure 12 As shown, At that time, door 30 is rotated open from G4 to G. max The process involves a rotation of >90°; during the opening process, the positioning center axis I remains at the third positioning point I3 on ​​the positioning trajectory line S; the third guide segment K3 engages with the first protruding ridge P1, and rotates counterclockwise relative to the first protruding ridge P1; the fifth guide segment K5 engages with the second protruding ridge Q1, and rotates counterclockwise relative to the second protruding ridge Q1. That is, the door 30 rotates from G4 to G... max During the process of >90°, the guide groove 6 rotates simply around the positioning center axis I. As an optional feature, the door 30 can be rotated from G4 to G... max During the process of >90°, the third guide segment K3 and the first protruding ridge P1 are set to contact engagement, and the fifth guide segment K5 and the second protruding ridge Q1 are set to contact engagement. Additionally, the door body 30 is rotated open from G4 to G... maxDuring the process of >90°, the centroid plane F of the door body 30 is located between the first hinge axis 41 and the second hinge axis 42.

[0120] The above describes the door opening angle of 30 degrees. At the same time, the movement trend within the opening angle range remains consistent; the only difference lies in the position of the first convex ridge P1 relative to the third guide segment K3 of the guide trajectory line K, and the position of the second convex ridge Q1 relative to the fifth guide segment K5 of the guide trajectory line K. Thus, the opening angle... When the door is opened to the corresponding section, selecting one of the opening angles represents the relative positions of the first protruding ridge P1 and the second protruding ridge Q1 with the guide groove 6, and the relative positions of the door hinge 7 and the positioning groove 5. Specifically, for example... Figure 12 and Figure 18 As shown, with This represents the position within the opening angle range, for comparison with other states when the door 30 is opened.

[0121] Door 30 opens to G max At this time, the positioning center axis I is located at the third positioning point I3 on ​​the positioning trajectory line S; the third guide segment K3 cooperates with the first protrusion P1, and the fifth guide segment K5 cooperates with the second protrusion Q1. (At time), the position of the guide centroid O relative to the hinge is recorded as O5; the positions of the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 relative to the hinge are recorded as A5, B5, C5, D5, and E5 respectively.

[0122] Above, 0° < G1 < G2 < G3 < G4 = 90° < G max G1, G2, G3, G4, G max The angles are denoted sequentially as follows: first angle G1, second angle G2, third angle G3, fourth angle G4, and maximum angle G. max .

[0123] In summary, during the process of opening the door 30 from the closed state to G3, the positioning center axis I moves along a straight line away from the reference plane M0 relative to the positioning trajectory line S of the positioning groove 5. The guide groove 6 opens counterclockwise relative to the first hinge axis 41 and the second hinge axis 42, so that the door 30 can move a certain distance inward (towards the side wall of the second body) while rotating. This compensates for the outward displacement of the first side edge W caused by the simple rotation of the door 30, and effectively avoids interference between the door 30 and the cabinet 100 when the door is opened.

[0124] During the process of the door 30 opening from the closed state to G2, the first protruding rib P1 cooperates with the first guide segment K1, and the second protruding rib Q1 cooperates with the fourth guide segment K4.

[0125] During the process of the door 30 opening from G2 to G4, the first protruding rib P1 cooperates with the second guide section K2, and the second protruding rib Q1 cooperates with the fourth guide section K4;

[0126] Door 30 is opened from G4 to G max During the process, the first convex ridge P1 cooperates with the third guide segment K3, and the second convex ridge Q1 cooperates with the fifth guide segment K5.

[0127] In conclusion, Open door 30 from the closed state to G. max The process is divided into four stages. The following explanation uses the hinges (positioning groove 5, first hinge shaft 41, and second hinge shaft 42) as a stationary reference point, and focuses on the relative movement of the guide groove 6 relative to the first hinge shaft 41 and the second hinge shaft 42, and the door hinge 7 relative to the positioning groove 5.

[0128] Phase 1, such as Figure 15 As shown, the process of the door 30 rotating from the closed state to G2.

[0129] In this first stage, the door 30 opens from 0° through G1 to G2. During this process, the positioning center axis I moves away from the door sidewall 32 along the positioning trajectory line S of the positioning groove 5; the guide groove 6 rotates counterclockwise, and the first guide segment K1 of the guide groove 6 engages with the first protrusion P1, and the fourth guide segment K4 engages with the second protrusion Q1. As the opening angle increases, the second inflection point B of the guide groove 6 gradually approaches the first protrusion P1, and the fifth inflection point E gradually approaches the second protrusion Q1. As one possible implementation, when the door 30 is opened to G2, the second inflection point B engages with the first protrusion P1, and the fourth guide segment K4 engages with the second protrusion Q1.

[0130] During the first stage of opening, with the hinges (positioning groove 5, first hinge shaft 41, and second hinge shaft 42) as references, when the door 30 opens from 0° to G2, the axis line segment rotates counterclockwise from I0O0 and moves inward sequentially to I1O1 and I2O2 (I0O0→I1O1→I2O2). Since the guide groove 6 and the door hinge 7 are set on the door 30, the positioning line segment IO represents the movement of the door 30; therefore, with the cabinet 10 (hinge) as a reference, the door 30 opens counterclockwise relative to the cabinet 10 and moves inward a certain distance, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30, effectively avoiding interference between the door 30 and the cabinet 100 when the door is opened.

[0131] Phase Two, see Figure 16 As shown, the door 30 is rotated open from G2 to G3.

[0132] In this second stage, the positioning center axis I moves away from the door sidewall 32 along the positioning trajectory line S of the positioning groove 5; the guide groove 6 rotates counterclockwise, and the second guide segment K2 of the guide groove 6 engages with the first protrusion P1, and the fourth guide segment K4 engages with the second protrusion Q1. As the opening angle increases, the third inflection point C of the guide groove 6 gradually approaches the first protrusion P1, and the fifth inflection point E gradually approaches the second protrusion Q1. As one possible implementation, when the door 30 is opened to G3, the positioning center axis I moves to the third positioning point I3 at the end of the positioning trajectory line S away from the door sidewall 32, the second guide segment K2 engages with the first protrusion P1, and the fourth guide segment K4 engages with the second protrusion Q1.

[0133] During the second stage of opening, with the hinges (positioning groove 5, first hinge shaft 41, and second hinge shaft 42) as the reference, when the door 30 opens from G2 to G3, the axis line segment rotates counterclockwise from I2O2 to I3O3 (I2O2→I3O3). Since the guide groove 6 and the door hinge 7 are set on the door 30, the positioning line segment IO represents the movement of the door 30; therefore, with the cabinet 10 (hinge) as the reference, the door 30 opens counterclockwise relative to the cabinet 10 and moves inward a certain distance, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30, effectively avoiding interference between the door 30 and the cabinet 100 when the door is opened.

[0134] The third stage, see Figure 17 As shown, the door 30 is rotated open from G3 to G4.

[0135] During the opening of the door 30 from G3 to G4, the positioning center axis I remains at the third positioning point I3 on ​​the positioning trajectory line S. The guide groove 6 rotates counterclockwise, with the second guide segment K2 engaging with the first protrusion P1 and the fourth guide segment K4 engaging with the second protrusion Q1. The third inflection point C of the guide groove 6 gradually approaches the first protrusion P1, and the fifth inflection point E gradually approaches the second protrusion Q1. As one feasible implementation, when the door 30 opens to G4, the third inflection point C engages with the first protrusion P1, and the fifth inflection point E engages with the second protrusion Q1.

[0136] During the opening process in the third stage above, with the hinge (positioning groove 5, first hinge shaft 41 and second hinge shaft 42) as the reference, when the door 30 opens from G3 to G2, the axis line segment rotates counterclockwise from I3O3 to I3O4 (I3O3→I3O4). Since the guide groove 6 and the door hinge 7 are set on the door 30, the positioning line segment IO represents the movement of the door 30; therefore, with the box 10 (hinge) as the reference, the door 30 only performs a simple counterclockwise rotation opening movement relative to the box 10, so as to quickly open the door 30 to a larger angle, and also to prevent the door 30 from moving further inward and blocking the access opening, affecting the user's access to food.

[0137] The fourth stage, such as Figure 18 As shown, door 30 is rotated open from G4 to G... max During the process.

[0138] Door 30 is opened from G4 to G max During this process, the positioning center axis I remains at the third positioning point I3 on ​​the positioning trajectory line S. The guide groove 6 rotates counterclockwise, the third guide segment K3 engages with the first protruding ridge P1, and the fifth guide segment K5 engages with the second protruding ridge Q1. As the opening angle increases, the fourth inflection point D of the guide groove 6 gradually approaches the first protruding ridge P1, and the first inflection point A gradually approaches the second protruding ridge Q1. The door 30 opens to G. max At that time, the third guide segment K3 engages with the first convex ridge P1, and the fifth guide segment K5 engages with the second convex ridge Q1.

[0139] During the opening process in the fourth stage above, with the hinges (positioning groove 5, first hinge shaft 41 and second hinge shaft 42) as the reference, the door 30 is opened from G4 to G... max At this time, the axis segment IO rotates counterclockwise from I3O4 to I3O5 (I3O4→I3O5). Since the guide groove 6 and the door hinge 7 are set on the door body 30, the positioning segment IO represents the movement of the door body 30; therefore, it can be concluded that: with the box body 10 (hinge) as the reference, the door body 30 only performs a simple counterclockwise rotation opening movement relative to the box body 10, so as to quickly open the door body 30 to a larger angle, and also to prevent the door body 30 from moving further inward and blocking the access opening, affecting the user's access to food.

[0140] Combining the first and second stages above, such as Figure 19 As shown, during the process of opening the door 30 from the closed state to G3, the axis line segment rotates counterclockwise from I0O0 through I1O1 and I2O2 to I3O3 (I1O1→I2O2→I3O3). The door 30 maintains an inward movement trend during the rotation and opening process, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30, and effectively avoiding interference between the door 30 and the cabinet 100 when the door is opened.

[0141] Combining the third and fourth stages above, such as Figure 20 As shown, when door 30 is opened from G3 to G... maxDuring the process, the central axis segment IO rotates counterclockwise from I3O3 through I3O4 to I3O5 (I3O3→I3O4→I3O5), meaning that the central axis segment IO performs a simple rotational movement with I3 as the rotation center. In other words, the door 30 performs a simple rotational movement with the positioning center axis I located at the third positioning point I3 as the rotation axis without inward displacement. It no longer compensates for the outward displacement of the first side edge W caused by the simple rotational movement, thus quickly opening the door 30 to a larger angle and preventing the door 30 from moving excessively inward and obstructing the access opening, affecting the user's ability to retrieve food.

[0142] As some embodiments of this application, such as Figure 16 As shown, during the process of the door 30 opening from the closed state to G2, the distance that the door 30 moves inward for each unit angle of opening is denoted as δ1;

[0143] During the opening of door 30 from G2 to G3, the distance the door 30 moves inward per unit angle of opening is denoted as δ2; where δ1 > δ2. That is, during the opening process, door 30 initially rotates and opens with a larger inward displacement compensation, while in the later stages, it rotates and opens with a smaller inward displacement compensation. This corresponds to primarily compensating for the outward displacement caused by the simple rotation of the first side edge W when door 30 opens, and not compensating for excessive inward displacement in the later stages of opening, thus avoiding unnecessary excessive inward movement of door 30 that could obstruct the access opening and affect the user's ability to retrieve food.

[0144] Combining the movement processes of the first to fourth stages above, during the opening process of the door 30, the door 30 is always moving inward relative to its closed state.

[0145] In summary, as Figures 14-21 As shown, door 30 opens from the closed state to G. max During the process of opening the door from the closed state to G3, the door 30 first rotates and moves inward a certain distance, and then only performs a simple rotational motion. Specifically, during the process of opening the door 30 from the closed state to G3, the door 30 rotates around a dynamically changing point, thus causing the door 30 to continuously move inward; while during the process of opening the door from G3 to G... max During the process, the door 30 rotates around a fixed point (I3), thereby allowing the door 30 to open quickly.

[0146] In the above embodiments, when the door 30 is opened to the maximum angle G max During the process of >90°, the first protruding ridge P1 and the second protruding ridge Q1 remain in motion relative to the guide groove 6 throughout the entire process.

[0147] Combination Figures 7-12 As shown, the door body rotates 30 degrees to open from the closed state to the maximum angle G.max During the process of >90°, the relative positional relationship between the centroid plane F and the first hinge axis 41 and the second hinge axis 42 changes continuously; this will be explained below.

[0148] Before the door 30 is opened from the closed state to G3, the center of mass plane F is located on the side of the first hinge axis 41, the second hinge axis 42, and the positioning groove 5 away from the pick-up / place-out port. That is, before the door 30 is opened from the closed state to G3, the center of mass plane F is not between the first hinge axis 41 and the second hinge axis 42.

[0149] Door 30 is opened from G3 to G max During the process (>90°), the centroid plane F remains between the first hinge axis 41 and the second hinge axis 42. In this embodiment, G3 ∈ any value in [30°, 34°]; G max Any value ≥90°; in this embodiment, G3 = 32°, G max =114°. It can be seen that in this embodiment, during most of the opening stroke (72% of the stroke, 32°~114°), the center of mass plane F of the door 30 is always located between the first hinge axis 41 and the second hinge axis 42, so as to ensure that the door 30 is better subjected to force and the door 30 is more stable when opening.

[0150] In this context, the midpoint of line segment Q0P0 is denoted as the guide midpoint H; the distance between the guide midpoint H and the centroid plane F is denoted as the offset distance R; when the guide midpoint H is located on the side of the centroid plane F away from the front wall 31, the offset distance R is positive. Correspondingly, when the guide midpoint H is located on the side of the centroid plane F closer to the front wall 31, the offset distance R is negative; when the guide midpoint H is located on the centroid plane F, the offset distance R is 0.

[0151] In this embodiment, the door 30 is opened from the closed state to G. max During the process of opening the door 30 at angles greater than 90°, the guide midpoint H is always located on the side of the centroid plane F away from the front wall 31; that is, in this embodiment, the offset distance R is a positive number during the opening of the door 30. When the door 30 opens, an external force is applied to the corner of the front wall 31 away from the side wall 32. In this embodiment, the first hinge shaft 41 and the second hinge shaft 42 mainly guide the corner of the door 30 near the rear wall 33 and the side wall 32 to effectively balance the external force driving the door 30 to open, thereby reducing the shaking of the door 30 and increasing the stability of the door 30 when it opens.

[0152] The following describes the opening process of door 30, from G3 to G... max The process will be described in detail during the stage when the centroid plane F is located between the first hinge axis 41 and the second hinge axis 42.

[0153] Among them, the door opening angles are 0°, G1, G2, G3, G3, Gmax When the offset distances are equal, they are denoted as R0, R1, R2, R3, R4, and R5 respectively. As an feasible approach, R0 > R1 > R2 > R3 > R4; R2 > R5 > R3 > R4.

[0154] Specifically, during the process of opening the door 30 from G3 to G4, the centroid plane F is located between the first hinge axis 41 and the second hinge axis 42, and the offset distance R between the guide midpoint H and the centroid plane F decreases. Here, G4 ∈ [88°, 92°] (any value). That is, during the process of opening the door 30 from G3 to approximately 90°, the offset distance R decreases. As an optional configuration, when the door 30 is opened to approximately 90°, the offset distance R is 0, meaning the guide midpoint H is located on the centroid plane F. During the opening process of the door 30 from the closed state, as the opening angle increases, the torque of the door 30 increases, and the stability of the door 30 deteriorates, making it prone to wobbling. In this embodiment, during the process of opening the door 30 from G3 to G4 (G4 ∈ [88°, 92°] (any value), the offset distance R between the guide midpoint H and the centroid plane F decreases, matching the opening angle of the door 30 to enhance the stability of the door 30 during the opening process.

[0155] As one feasible approach, door 30 is opened from G4 to G max During the process of >90°, the guide midpoint H is located on the side of the centroid plane F close to the front wall 31 of the door, and the offset distance R is a positive number.

[0156] Door 30 is opened from G4 to G max During the process of (>90°), the offset distance R between the guide midpoint H and the centroid plane F tends to increase. As one feasible method, the door 30 is opened from G4 to G... max During the process of (>90°), the offset distance R belongs to any value between 0 and 5 mm. As one feasible method, when the door 30 is opened to G... max When the angle is greater than 90°, the centroid plane F is located near the guide midpoint H, thus placing the door body 30 at the most stable maximum angle G. max This configuration prevents the door 30 from closing due to external force, thus avoiding disruption to the user's food handling. As a design feature, the door 30 is opened to its maximum angle G. max When the centroid plane F is offset from the guide midpoint H, the offset distance R5 ∈ [0, 5] is any value in mm.

[0157] The above door 30 is opened from G4 to G max During the process of opening the door (at least 90°), although the offset distance R increases, it is limited to a small range. The centroid plane F is near the center point (guide midpoint H) of the positioning line segment IO, effectively enhancing the later stage of the door opening (opening to approximately 90° to the maximum angle G).max The stability of the stage); in addition, the corresponding guide trajectory line K with the above characteristics is smoother.

[0158] Since the hinge plate 40 is fixed to the housing 10, the first hinge shaft 41, the second hinge shaft 42, and the positioning groove 5 are disposed on the hinge plate 40. The positions of the first hinge shaft 41 and the second hinge shaft 42 relative to the housing 10 remain unchanged. In this embodiment, when the door 30 is closed, the door side wall 32 is flush with the first body side wall of the housing 10. It should be noted that flushing includes complete flushing and also near flushing, such as near flushing where the distance between the two side walls is less than 1 mm. That is, the relationship between two planes where the distance between the planes containing the two side walls is less than 1 mm is defined as flushing.

[0159] As an feasible approach, combining Figure 7 and Figure 11 As shown, the distance between the third positioning point I3, the endpoint of the positioning trajectory line S furthest from the door side wall 32, and the reference plane M0 is L1. The front wall 31 of the door is approximately parallel to the plane containing the pick-up and drop-off opening;

[0160] When the door 30 is opened to 90°, the front wall 31 of the door is approximately parallel to the side wall of the first body; the central upper axis (positioning center axis I) of the door hinge 7 is located at the third positioning point I3 on ​​the positioning trajectory line S; the distance between the positioning center axis I (third positioning point I3) and the front wall 31 is L2. In this embodiment, approximately parallelism is specifically defined as the angle between two planes being any value between 0° and 2°. That is, the relationship between two planes with an angle between them being any value between 0° and 2° is defined as approximately parallel.

[0161] When L1 and L2 are approximately equal, when the door 30 is opened to 90°, the front wall 31 of the door is flush with the first side wall of the box 10; where L1 and L2 are approximately equal is specifically defined as the difference between L1 and L2 being any value between -1mm and 1mm.

[0162] When L1 > L2, when the door 30 is opened to 90°, the front wall 31 of the door is retracted into the inner side of the first body side wall of the box 10.

[0163] When the door 30 is opened to 90°, the distance between the front wall 31 of the door and the reference plane M0 is denoted as the first distance λ. When the front wall 31 is located inside the reference plane M0, the first distance λ is a positive number. As an adjustable setting, λ ∈ [0.5, 2], unit: mm. At this time, the door 30 is located inside the reference plane M0, which allows the refrigerator embedded in the cabinet 100 to open to a larger angle.

[0164] When L1 < L2, when the door 30 is opened to 90°, the front wall 31 of the door protrudes outside the first side wall of the box 10.

[0165] As an feasible approach, L1 and L2 are approximately equal or L1 > L2, so that after the door 30 is opened to 90°, it can be opened to a larger angle, making it convenient for users to take out and put in items.

[0166] As another feasible approach, L1 < L2, 0 ≤ L2 - L1 ≤ 0.2α, to reserve space and avoid collision between door 30 and cabinet 100.

[0167] As an feasible approach, combining Figures 7-13 As shown, in this embodiment, the door 30 has a second side edge N and a first side edge W. When the door 30 is in a closed state relative to the housing 10, the second side edge N is closer to the housing 10 than the first side edge W. This embodiment further defines a first reference plane M1 and a second reference plane M2. See also... Figure 13 As shown, the first reference plane M1 is a plane parallel to the reference plane M0 and perpendicular to the plane containing the retrieval opening. The first reference plane M1 is located outside the reference plane M0, and the distance between the two planes is α. That is, the first reference plane M1 is the plane containing the inner wall of the cabinet 100 near the box body 10; the second reference plane M2 is the plane containing the retrieval opening of the storage room. The first reference plane M1 and the second reference plane M2 do not move during the opening of the door 30 relative to the box body 10; they are reference planes that remain stationary relative to the box body 10. It should be noted that the second reference plane M2 is the plane containing the retrieval opening defined by the box body 10, and it does not move forward due to deformable door seals or other components installed at the retrieval opening of the box body 10.

[0168] In this embodiment, when the door 30 is opened to the second angle G2, the distance by which the first side edge W extends beyond the reference plane M0 is at its maximum, and the first side edge W is located between the reference plane M0 and the first reference plane M1. At this time, the distance between the first side edge W and the first reference plane M1 is at its minimum.

[0169] During the process of the door 30 opening from the closed state relative to the box 10 to the second angle G2, the first side edge W moves along the first side edge trajectory W0W2 towards the first reference plane M1 and the second reference plane M2. The distance between the first side edge W and the first reference plane M1 decreases, that is, the distance of the first side edge W beyond the reference plane M0 increases, and reaches its maximum value when it is opened to the second angle G2.

[0170] At the same time, the second side edge N moves away from the first reference plane M1 along the second side edge trajectory N0N2, and the distance between the second side edge N and the second reference plane M2 tends to decrease.

[0171] In some embodiments, for the movement of the first side edge W and the second side edge N in their respective directions, the trajectory W0W2 of the first side edge is located inside the first reference plane M1, and the distance between the trajectory W0W2 and the first reference plane M1 is greater than a first predetermined distance d1; that is, the distance between the endpoint W2 of the trajectory W0W2 and the first reference plane M1 is the first predetermined distance d1; d1 is not less than 0.5h; where h is the thickness of the door body 30. Specifically, the thickness of the door body 30 is not less than 2 cm.

[0172] The above-mentioned limitations of the first preset distance d1 determine the extent to which the first side edge W can extend beyond the side of the cabinet 10. In practical applications, the first side edge W can be allowed to extend beyond the side of the cabinet 10 to a certain extent. For example, for the embedded use of the cabinet 10 component, there is a certain gap (α) between the cabinet 10 and the cabinet or wall into which it is embedded. This gap allows the first side edge W to extend beyond the side of the cabinet 10 to a certain extent.

[0173] With the door body 30 and the box body 10 pivotally connected, during the process of the door body 30 opening to G2, the final movement direction of the second side edge N relative to the second reference plane M2 and the final movement direction of the first side edge W relative to the first reference plane M1 are always the directions described above.

[0174] In this embodiment, G2 ∈ any value in [30°, 34°]. During the initial opening phase (from the closed state to G2), the door 30 has a large inward displacement to efficiently compensate for the outward movement of the first side edge W caused by the simple rotation of the door 30, effectively avoiding interference between the door 30 and the cabinet 100.

[0175] In general, in this embodiment, during the process of the door 30 opening from the closed state to the second angle G2 relative to the housing 10, the first side edge W moves along the curved first side edge trajectory W1W2, and the second side edge N moves along the curved second side edge trajectory N0N2. Furthermore, the shape and trend of these trajectories are defined, and the door 30 moves according to these trajectories, thereby reducing or even preventing excessive compression of the housing 10 by the door 30 and preventing the door 30 from extending beyond the side of the housing 10.

[0176] In this embodiment, door 30 opens from G2 relative to box 10 to G... maxDuring the process, the first side edge W moves along the trajectory of the third side edge W2W5 in a direction away from the first reference plane M1 and closer to the second reference plane M2, and the distance between the first side edge W and the first reference plane M1 increases. The second side edge N moves along the trajectory of the fourth side edge N2N5 in a direction away from the first reference plane M1, and the distance between the second side edge N and the second reference plane M2 first increases and then decreases. Specifically, when the opening angle of the door 30 is G' (G3>G'>G2), the distance between the second side edge N and the second reference plane M2 is the smallest. Among them, the movement trend of the door 30 opening from G2 relative to the box 10 to G' is consistent with the movement trend of the door 30 opening from the closed state to G2. That is, during the process of the door 30 opening from the closed state to G', the distance between the second side edge N and the second reference plane M2 decreases; while the distance between the door 30 opening from G' to G' is... max During the process, the distance between the second side edge N and the second reference plane M2 tends to increase; the above arrangement effectively avoids the second side edge N from squeezing the box body 10. In this embodiment, G3 = 86°.

[0177] In addition, as a settable method, during the process of the door 30 opening from G2 relative to the box 10 to G4, the change in distance between the first side edge W and the second reference plane M2 for each unit angle that the door 30 opens is denoted as ξ1.

[0178] Door 30 opens from G4 relative to housing 10 to its maximum angle G. max During the process, the change in distance between the first side edge W and the second reference plane M2 for each unit angle that the door 30 opens is denoted as ξ2; ξ1 and ξ2 are both positive numbers.

[0179] Where ξ1>ξ2. That is, in the later stage of opening the door 30 (G4 to G... max During the phase (90°~114°), the distance between the first side edge W and the plane where the pick-up and put-out opening is located changes gradually to avoid the first side edge W squeezing the door body 30, which helps the door body 30 to open to a larger angle, making it convenient for users to pick up and put out food.

[0180] In some embodiments of this application, during the process of the door 30 opening from G' relative to the box 10 to G4, the change in distance between the second side edge N and the second reference plane M2 for each unit angle that the door 30 opens is denoted as μ1.

[0181] Door 30 opens from G4 relative to housing 10 to its maximum angle G. max During the process, for each unit angle that the door 30 opens, the change in distance between the second side edge N and the second reference plane M2 is denoted as μ2; both μ1 and μ2 are positive numbers; where μ1 < μ2; that is, in the later stage of the opening of the door 30 (from G4 to G... maxDuring the phase (90°~114°), the distance between the second side edge N and the second reference plane M2 (the plane where the take-out port is located) changes rapidly. The second side edge N moves away from the second reference plane M2 quickly to release the pressure of the second side edge N on the door seal.

[0182] Based on the characteristics of the trajectory described above, during the opening process of the door 30, the door 30 will not squeeze the box 10, nor will it extend too far beyond the side of the box 10, and the movement is smooth.

[0183] In this embodiment, G can be set max Any value in [110°, 120°].

[0184] In addition, it should be noted that the range of angles mentioned above is only one feasible range; the relative motion in this invention is not limited by the specific range of each angle.

[0185] In some embodiments of this application, reference is made to Figures 22 to 30 The door body 30 includes a mounting block 80, which is mounted on the door body 30 at a position opposite to the hinge plate 40. A guide groove 6 is formed on the mounting block 80. In this embodiment, the end of the hinge away from the side wall of the first body is provided with a first mating part, and the mounting block 80 has a second mating part. The second mating part is used to cooperate with the first mating part to realize the locking and unlocking of the door body 30 and the housing 10.

[0186] Specific reference Figures 22-24 ,in, Figure 22 and Figure 23 A schematic diagram showing the fit between the door end cap located at the lower end of the door and the mounting block; Figure 24 An exploded view of the door end cap and mounting block located at the top of the door.

[0187] This embodiment uses the mounting block 80 located at the lower end of the door body 30 as an example for explanation. Figure 22 and Figure 23 As shown, a guide groove 6 is formed on the mounting block 80; wherein, the guide groove 6 includes a groove bottom 60 and a circumferential groove wall 61 surrounding the edge of the groove bottom 60; the circumferential groove wall 61 forms a slot 63 opposite to the groove bottom 60. The door body 30 includes a door end cover 38, which is located at the end of the door body 30 near the hinge; a mounting groove 34 is formed on the door end cover 38, which is used to fix the mounting block 80. As one possible implementation, the mounting block 80 is installed in the mounting groove 34, and then the mounting block 80 is fastened to the door body 30 by a first fastener. Specifically, the first fastener can be a screw or the like.

[0188] In this embodiment, the bottom of the mounting groove 34 has a recess 39, and the recess 39 is polygonal. The end of the door hinge 7 furthest from the hinge has a fixing block 70, which is formed in accordance with the recess 39 and is installed within it. The outer peripheral wall of the fixing block 70 mates with the inner peripheral wall of the recess 39 to effectively restrict relative rotation between the fixing block 70 and the recess 39. The mounting block 80 has a through hole 64 penetrating the guide groove 6, through which the door hinge 7 extends into the guide groove 6. Thus, the fixing block 70 is clamped between the door end cover 38 and the mounting block 80 to effectively restrict the movement of the fixing block 70 and the door hinge 7 along the axis of the door hinge 7. With this configuration, the door end cover 38, door hinge 7, and mounting block 80 are separately configured for easy processing; the above-mentioned mating arrangement provides effective fixation, ensuring the overall structural integrity.

[0189] As one feasible approach, the mounting block 80 includes a plate 81, which is disposed around the outer peripheral sidewall of the guide groove 6. In this embodiment, the screws connecting the mounting block 80 and the mounting groove 34 are fixed to the side of the plate 81 away from the door sidewall 32, that is, the screw fixing position is located on the side of the door hinge 7 fixing position (through hole 64) away from the door sidewall 32, which effectively increases the connection firmness between the mounting block 80 and the door 30.

[0190] A receiving cavity 35 is formed on the bottom wall of the mounting groove 34 near the door side wall 32. The guide groove 6 is at least partially received within the receiving cavity 35. The plate 81 mates with the bottom wall of the mounting groove to effectively define the position of the guide groove 6. In this embodiment, the bottom 60 of the guide groove 6 mates with the bottom of the receiving cavity 35 and is connected by a second fastener. In this embodiment, three second fasteners are provided, forming quadrilateral apexes with the door hinge 7 to increase the connection strength between the guide groove 6 and the door end cover 38.

[0191] In some embodiments of this application, the second mating portion on the mounting block 80 is configured as a locking structure. Specifically, the second mating portion includes a locking hook 82 located on the side of the plate 81 away from the door sidewall 32. The locking hook 82 extends away from the door sidewall 32 and bends towards the side close to the door rear wall 33 and the door sidewall 32. The opening of the locking hook 82 faces the plate 81 (the opening of the locking hook 82 faces the door sidewall 32), and the free end of the locking hook 82 is located on the side close to the door rear wall 33.

[0192] A first mating part located on the side of the hinge plate 40 away from the first body sidewall is provided as a stop part 403, and a hook gap 404 is formed on the side of the stop part 403 near the cabinet 10. When the door 30 is in the closed state, the free end of the lock hook 82 is received in the hook gap 404, the stop part 403 is located in the lock hook 82, and the lock hook 82 on the door 30 hooks the stop part 403 on the hinge plate 40, thereby locking the door 30 and preventing the door 30 from not closing tightly and affecting the refrigeration and freezing effect of the refrigerator; when the door 30 is opened, the lock hook 82 is deformed by force and overcomes the obstruction of the stop part 403, thereby disengaging from the stop part 403.

[0193] The locking hook 82 may include a root joint 83 and a hook portion 84. The root joint 83 is connected to the plate 81, and the hook portion 84 is connected to the root joint 83 and bends towards the side closer to the rear wall 33 and the side wall 32 of the door. A screw passes through the root joint 83 and connects to the door body 30 to strengthen the connection between the root joint 83 and the door body 30, so that only the hook portion 84 deforms when the locking hook 82 disengages from the stop portion 403.

[0194] The free ends of both the hook part 84 and the stop part 403 are arc-shaped, which facilitates the hook part 84 to smoothly hook onto or disengage from the stop part 403 along the arc.

[0195] like Figures 25-27 As shown, when the door 30 is closed from the open state, as the door 30 rotates to close, the free end of the hook part 84 gradually approaches the stop part 403. When the hook part 84 and the stop part 403 come into contact, the door 30 continues to close. Under the action of the stop part 403, the hook part 84 deforms, the stop part 403 enters the hook part 84, and the free end of the hook part 84 enters the hook gap 404; the lock hook 82 locks with the hinge plate 40, thereby locking the door 30 and the box 10.

[0196] When the door 30 is opened from the closed state, the process is the reverse of the closing process, and will not be described again here. When the door 30 is closed from the open state to an angle less than a set angle (7° in this embodiment), the door 30 automatically closes under the action of the hook part 84 and the stop part 403. As an implementable method, when the door 30 is opened to a set unlocking angle (5° to 8° in this embodiment), the hook part 84 and the stop part 403 separate. As a settable method, the unlocking angle is set to G1. When the door 30 is opened to G1, the hook part 84 and the stop part 403 separate when the first hinge shaft 41 moves relative to the first guide section K1. With the above settings, in the initial stage of opening the door 30, rotational motion is the main motion, and the inward displacement compensation is small, which facilitates the quick separation of the lock hook 82 and the stop part 403, and facilitates the rapid opening of the door 30. During the process of the door 30 opening from the closed state to the second angle G2, the second hinge shaft 42 separates from the guide groove 6, effectively avoiding jamming and facilitating the quick separation of the lock hook 82 from the stop part 403.

[0197] In some embodiments, a first protrusion 36 may be provided on the door body 30, and a gap groove 37 is formed between the first protrusion 36 and the groove wall of the mounting groove 34. A plug-in plate is formed at the root joint 83, and the plug-in plate is inserted into the gap groove 37. In this way, the root joint 83 can be prevented from deforming along the direction from the front wall 31 to the rear wall 33 of the door by the limiting of the first protrusion 36 and the groove wall of the mounting groove 34. In this embodiment, the screw fixing position is provided at the mating point between the first protrusion 36 and the root joint 83; that is, the first fixing member passes through the root joint 83 and the first protrusion 36 to fix the mounting block 80 to the door end cover 38.

[0198] Specifically, the plug-in plate is configured as an arc-shaped plate; the first protrusion 36 is cylindrical, and the arc-shaped plug-in plate mates with the outer peripheral wall of the first protrusion 36 and is at least partially located within the gap groove 37. The above arc-shaped configuration increases the limiting area of ​​the gap groove 37 on the root connection portion 83, increases the connection strength between the mounting block 80 and the door body 30, and effectively limits the deformation of the root connection portion 83.

[0199] Configurable, as an implementable method, such as Figure 22 As shown, the mounting block 80 located at the upper end of the door body 30 has only a portion with a guide groove 6 and does not include a locking structure. Correspondingly, when the structure of the mounting block 80 changes, the mounting groove 34 provided on the door body 30 adapts to accommodate and fix the mounting block 80.

[0200] Mounting block 80 can be made of POM material, which has strong abrasion resistance and can improve the service life of the hinge. In addition, in this embodiment, the positioning groove 5 and the locking structure are integrally molded to form mounting block 80, increasing structural precision and enhancing the integrity and strength of mounting block 80. Alternatively, mounting block 80, which integrates guide groove 6 and locking structure, can be integrally molded using injection molding.

[0201] In some embodiments of this application, a limiting structure is provided between the door body 30 and the hinge plate 40 to limit the door body 30 from opening to the maximum angle, so as to avoid damaging the mounting block 80 when the door is opened to a certain angle by force.

[0202] Specifically, refer to Figure 22 The lower end of the door body 30 is provided with a limiting part 85, which is located at the front end of the mounting block 80 located at the lower end of the door body 30; the hinge plate 40 forms a limiting surface at the end away from the housing 10 and close to the side wall of the first body. When the door body 30 rotates to the maximum allowable position (door body 30 opening angle G), max When the limiting part 85 abuts against the limiting surface of the hinge plate 40, it stops the door body 30 from continuing to rotate.

[0203] In this embodiment, the limiting part 85 includes an insert part 86 and a limiting strip 87. The limiting part 85 may be a sheet metal part.

[0204] The mounting part 86 is plate-shaped and is installed in the mounting groove 34 at the lower end of the door body 30. The plate 81 of the mounting block 80 clamps the mounting part 86 onto the door body 30 from the lower end, thereby fixing the limiting part 85 onto the door body 30.

[0205] The limiting strip 87 is convex and extends downward from the edge of the mounting part 86 near the front wall 31 of the door to form the lower surface of the door body 30. So when the door body 30 drives the limiting part 85 to rotate to the maximum angle, the limiting strip 87 will be blocked by the limiting surface of the hinge plate 40, thereby forcing the door body 30 to stop opening.

[0206] The limiting part 85 is clamped on the door body 30 by the mounting block 80, which omits the connection structure between the limiting part 85 and the door body 30, simplifies the product structure, and has the advantage of simple structure.

[0207] It should be noted that the limiting part 85 can also be set at the upper end of the door body 30, which will not be elaborated here.

[0208] In other embodiments of this application, such as Figures 28-30 As shown, Figure 28 This is a schematic diagram showing the fit between the door end cap, mounting block, and door hinge located at the top of the door body. Figures 29-30 A schematic diagram showing the fit between the door end cap, mounting block, and door hinge located at the lower end of the door body;

[0209] like Figures 28-30 As shown, a bushing 65 is provided on the bottom wall of the guide groove 6 formed on the mounting block 80. The door hinge 7 is installed in the bushing 65, and the bushing 65 cooperates with the positioning groove 5 on the hinge plate to prevent wear on the door hinge 7. If the bushing 65 is damaged, it can be repaired by replacing the mounting block 80 with the bushing 65, which facilitates maintenance. As an feasible approach, the mounting block 80 and the bushing 65 are integrally formed, which effectively increases the connection strength and integrity between them, improves the structural strength of the mounting block 80, and effectively ensures its service life.

[0210] 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 variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A refrigerator characterized by comprising: It includes: The housing has a first body sidewall and a second body sidewall that are disposed opposite to each other; A hinge is provided on the housing and close to the side wall of the first body; the hinge is provided with a straight positioning groove, a first hinge shaft, a second hinge shaft, and a first mating part away from the side wall of the first body; A door body having a front wall away from the housing when the door body is closed, and a side wall close to the hinge and connected to the front wall; The end of the door near the hinge is provided with: The mounting block is integrally formed and detachably mounted on the door body; the mounting block has an annular guide groove and a second mating part located on the side of the guide groove away from the door sidewall and locked or unlocked with the first mating part; A door hinge, which is surrounded by the guide groove and mates with the positioning groove; During the process of the door opening from the closed state to the third angle G3, the first hinge shaft and the second hinge shaft move relative to the guide groove, and at least one of them contacts and engages with the guide groove; the door hinge moves relative to the positioning groove, so that the door can move inward a certain distance while rotating; The door has a centroid plane F that passes through the centroid of the door and is parallel to the front wall of the door; during the process of the door opening from the third angle G3 to Gmax, the centroid plane F is always located between the first hinge axis and the second hinge axis. The axis passing through the centroid of the cross section of the first hinge axis is denoted as the first centroidal axis P0, and the axis passing through the centroid of the cross section of the second hinge axis is denoted as the second centroidal axis Q0; Within the projection of the top wall of the box, the midpoint of line segment Q0P0 is denoted as guide midpoint H; during the process of the door opening from the closed state to Gmax, the guide midpoint H is always located on the side of the centroid plane F away from the front wall of the door.

2. The refrigerator according to claim 1, characterized in that: The guide groove includes a groove bottom and a circumferential groove wall surrounding the groove bottom; a plate is provided around the circumferential groove wall surrounding the guide groove; The door body has a mounting groove formed at the end near the hinge, and a receiving cavity is formed on the bottom wall of the mounting groove; the plate body cooperates with the bottom wall of the mounting groove, and the guide groove is at least partially received in the receiving cavity.

3. The refrigerator according to claim 2, characterized in that: The first mating part is a stop part, and the second mating part includes a root connection part and a hook part; one end of the root connection part is connected to the plate body, and the other end is connected to the hook part; the root connection part is fixedly connected to the door body. When the door is closed, the hook part and the stop part are locked.

4. The refrigerator according to claim 3, characterized in that: The free ends of both the hook and the stop are arc-shaped.

5. The refrigerator according to claim 3 or 4, characterized in that: The bottom wall of the mounting groove is provided with a first protrusion. The first protrusion is located on the side of the receiving cavity away from the door side wall, and the first protrusion and the groove wall of the mounting groove near the front wall of the door together define a gap groove. A plug plate is formed at the root joint, and the plug plate is installed in the gap groove.

6. The refrigerator according to claim 1, 2, 3, or 4, characterized in that: The first hinge shaft is located on the side of the positioning groove close to the side wall of the first body; the second hinge shaft is located on the side of the positioning groove away from the side wall of the first body; the first hinge shaft has a first protruding ridge P1 that mates with the groove wall of the guide groove, and the second hinge shaft has a second protruding ridge Q1 that mates with the groove wall of the guide groove.

7. The refrigerator according to claim 6, characterized in that: The inner wall of the guide groove defines a guide trajectory line K, and the centroid of the guide trajectory line K is denoted as the guide centroid O. The guide trajectory line K includes a first guide segment K1, a second guide segment K2, a third guide segment K3, a fourth guide segment K4, and a fifth guide segment K5 that are connected end to end and all protrude toward the side away from the guide centroid O. The connection point between the fifth guide segment K5 and the first guide segment K1 is denoted as the first inflection point A, and the connection points between the first guide segment K1, the second guide segment K2, the third guide segment K3, the fourth guide segment K4 and the fifth guide segment K5 are denoted as the second inflection point B, the third inflection point C, the fourth inflection point D and the fifth inflection point E, respectively. The second inflection point B, the first inflection point A, the third inflection point C, the fifth inflection point E, and the fourth inflection point D are successively moved away from the side wall of the door; The fifth inflection point E, the first inflection point A, the fourth inflection point D, the second inflection point B, and the third inflection point C are successively located near the front wall of the door.

8. The refrigerator according to claim 7, characterized in that: When the door is closed, the first protruding ridge P1 engages with the first inflection point A, and the second protruding ridge Q1 engages with the fourth guide segment K4.

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