Refrigerator

Abstract

The refrigerator comprises a box body with a first body side wall and a second body side wall arranged oppositely, a hinge arranged on the box body and close to the first body side wall, and a door body with a door front wall and a door side wall; the hinge is provided with a guide round block and a hinge shaft fixed with the guide round block; an end of the door body close to the hinge is provided with a guide groove, the guide round block is installed in the guide groove and matched with opposite groove walls of the guide groove; a positioning groove is arranged on a groove bottom of the guide groove and extends from an end away from the door side wall to a direction close to the door side wall, the hinge shaft is matched with the positioning groove; when the door body is opened from a closed state, the guide round block moves relative to the guide groove; the hinge shaft moves relative to the positioning groove to the direction close to the door side wall, so that the door body can rotate and move outward by a distance; the refrigerator effectively avoids that one door body of a side-by-side refrigerator drives the other door body to open when the one door body is opened, so as to reduce the opening area of the refrigerator and reduce cold air overflow.

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, for refrigerators with two doors arranged opposite each other, the two doors work together to open or close the retrieval opening. To ensure the airtightness when the doors are closed, existing refrigerators have a sealing strip on the side of one door closer to the other. When the two doors are closed, the sealing strip on one door seals against the sealing strip on the other door. That is, when the two doors are closed, the two sealing strips are pressed into the gap between the two doors to effectively seal the space between the two doors and the refrigerator body, preventing cold air from escaping.

[0003] Most refrigerator door hinges are single-axis designs. When one door is opened, the sealing strips on the two doors are tightly pressed together when they are closed. The opening of the opened door will cause the other door to open as well, resulting in an increased opening area for taking out and putting in food, which increases the amount of cold air that overflows and increases power consumption. 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 allows the door to move outward a certain distance 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 guide block and a hinge shaft fixed to the guide block;

[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] A guide groove is provided at the end of the door body near the hinge; the guide block is installed in the guide groove and cooperates with the two opposite groove walls of the guide groove.

[0011] A positioning groove is provided on the bottom of the guide groove; the positioning groove extends from the end away from the door sidewall toward the end closer to the door sidewall; the hinge shaft cooperates with the positioning groove;

[0012] When the door is closed, the hinge shaft is located at the end of the positioning groove away from the door sidewall; during the opening process of the door from the closed state, the guide block always cooperates with the two opposite groove walls of the guide groove and moves relative to the guide groove; the hinge shaft moves relative to the positioning groove towards the door sidewall, so that the door can move a certain distance away from the second sidewall while rotating.

[0013] In some embodiments of this application, the center trajectory line of the guide groove is denoted as the second trajectory line K, and the second trajectory line K is perpendicular to the front wall of the door.

[0014] In some embodiments of this application, the hinge axis is located on the side of the guide block closer to the housing.

[0015] In some embodiments of this application, the central axis of the hinge shaft is denoted as the positioning central axis P, and the central axis of the guide block is denoted as the guide central axis I; in the projection of the top wall of the housing, the radius passing through the positioning central axis P in the circular cross section of the guide block is denoted as the central radius IA, and the length of line segment IP is greater than the length of line segment AP.

[0016] In some embodiments of this application, the plane passing through the guide center axis I and parallel to the first body sidewall is denoted as the first reference plane M1; in the projection of the top wall of the box, the angle between the axis radius IA and the first reference plane M1 is denoted as the first included angle θ; wherein, the first included angle θ is any value of 25°~35°.

[0017] In some embodiments of this application, in the projection of the top wall of the housing, the axial radius IA is located on the side of the first reference plane M1 away from the first body sidewall, and on the side of the plane passing through the guide center axis I and parallel to the front wall of the door when the door is closed, closer to the housing.

[0018] In some embodiments of this application, the guide groove includes a first guide bar and a second guide bar arranged in parallel. The first guide bar is located on the side of the second guide bar away from the door sidewall, and the positioning groove is located between the first guide bar and the second guide bar, extending in the direction from the first guide bar to the second guide bar. Both the first guide bar and the second guide bar cooperate with the guide block.

[0019] In some embodiments of this application, the center trajectory line of the positioning groove is denoted as the first trajectory line S, the distance between the end of the first trajectory line S away from the door side wall and the front wall of the door is denoted as D0, and the distance between the end of the first trajectory line S near the door side wall and the front wall of the door is denoted as D1; ​​wherein, D0≥D1.

[0020] In some embodiments of this application, the door body includes a rear wall disposed opposite to the front wall of the door, and a door seal is provided on the rear wall of the door; wherein, the edge of the door seal that is close to the side wall of the door and far away from the front wall of the door is denoted as the side sealing edge H;

[0021] The enclosure defines an insulated storage room, which has an access opening that can be closed or opened by the door; the plane containing the access opening is denoted as the second reference plane M2; the plane containing the side wall of the first body is denoted as the reference plane M0; the second reference plane M2 and the reference plane M0 do not move during the opening of the door relative to the enclosure, and are reference planes that remain stationary relative to the enclosure;

[0022] During the process of the door opening from the closed state to G5, the side sealing edge H always moves away from the second reference plane M2 and the reference plane M0;

[0023] The door is opened from G5 to its maximum angle G. max During the process, the side sealing edge H moves away from the second reference plane M2 and closer to the reference plane M0; wherein, G max >G5>90°.

[0024] In some embodiments of this application, during the process of the door opening from the closed state to G5, the movement trajectory of the side sealing edge H is an arc.

[0025] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0026] This invention proposes a refrigerator comprising a cabinet having a first sidewall and a second sidewall disposed opposite to each other, a hinge disposed on the cabinet and close to the first sidewall, and a door having a front wall and a sidewall. The hinge has a guide block and a hinge shaft fixed to the guide block. A guide groove is provided at the end of the door near the hinge, and the guide block is installed in the guide groove and cooperates with the two opposite walls of the guide groove. A positioning groove is provided at the bottom of the guide groove, extending from the end away from the sidewall towards the sidewall, and the hinge shaft cooperates with the positioning groove. When the door is opened from the closed state, the guide block moves relative to the guide groove; the hinge shaft moves relative to the positioning groove towards the sidewall, so that the door can move outward a certain distance while rotating. This invention effectively avoids the situation where opening one door of a double-door refrigerator causes the other door to open, thus increasing the opening area of ​​the refrigerator and reducing cold air leakage. Attached Figure Description

[0027] 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.

[0028] Figure 1 This is a perspective view of the refrigerator of the present invention;

[0029] Figure 2 This is a top view of the refrigerator of the present invention;

[0030] Figure 3 yes Figure 2 A partial structural diagram;

[0031] Figure 4 This is an exploded structural diagram of the hinge in the upper right corner of the refrigerator of the present invention.

[0032] Figure 5 This is an exploded structural diagram of the hinge in the upper right corner of the refrigerator of the present invention from another perspective.

[0033] Figure 6 This is a schematic diagram of the hinge structure at the upper end of the refrigerator door of the present invention;

[0034] Figure 7 This is a structural schematic diagram of the hinge at the upper end of the refrigerator door from another perspective.

[0035] Figure 8 This is a view of the hinge when the door of the refrigerator of the present invention is in the closed state;

[0036] Figure 9 This is a view of the hinge when the refrigerator door of the present invention is opened to G1;

[0037] Figure 10 This is a view of the hinge when the refrigerator door of the present invention is opened to G2;

[0038] Figure 11 This is a view of the hinge when the refrigerator door of the present invention is opened to G3;

[0039] Figure 12 This is a view of the hinge when the refrigerator door of the present invention is opened to G4;

[0040] Figure 13 This is a view of the hinge when the refrigerator door of the present invention is opened to G5;

[0041] Figure 14 The refrigerator door of this invention is opened to G. max View at the hinge when >90°;

[0042] Figure 15 The refrigerator door of this invention is opened from the closed state to G. max A schematic diagram showing the movement of the guide block relative to the guide groove and the hinge shaft relative to the positioning groove during the process of >90°.

[0043] Figure 16 This is a schematic diagram showing the relative positions of the guide block relative to the guide groove and the hinge shaft relative to the positioning groove when the refrigerator door of the present invention is opened to G1 from the closed state.

[0044] Figure 17 This is a schematic diagram showing the positional relationship between the guide block and the guide groove, and between the hinge shaft and the positioning groove, when the refrigerator door of the present invention is opened to G2 from the closed state.

[0045] Figure 18 This is a schematic diagram showing the positional relationship between the guide block and the guide groove, and between the hinge shaft and the positioning groove, when the refrigerator door of the present invention is opened to G3 from the closed state.

[0046] Figure 19 This is a schematic diagram showing the positional relationship between the guide block and the guide groove, and between the hinge shaft and the positioning groove, when the refrigerator door of the present invention is opened to G4 from the closed state.

[0047] Figure 20 This is a schematic diagram showing the positional relationship between the guide block and the guide groove, and between the hinge shaft and the positioning groove, when the refrigerator door of the present invention is opened to G5 from the closed state.

[0048] Figure 21 The refrigerator door of this invention is opened to G from its closed state. max A schematic diagram showing the positional relationship between the guide block and the guide groove, and between the hinge shaft and the positioning groove when the angle is >90°.

[0049] Figure 22 This is a schematic diagram showing the movement of the guide block relative to the guide groove and the hinge shaft relative to the positioning groove during the process of the refrigerator door of the present invention opening from the closed state to G3;

[0050] Figure 23 The refrigerator door of this invention is opened from G3 to G. max A schematic diagram showing the movement of the guide block relative to the guide groove and the hinge shaft relative to the positioning groove during the process of >90°.

[0051] Figure 24 This is a schematic diagram of the cooperation structure of two oppositely arranged door bodies when the refrigerator door of the present invention is in the closed state;

[0052] Figure 25 This is a schematic diagram showing the engagement of the two side sealing strips when the refrigerator door is closed according to the present invention;

[0053] Figure 26This is a schematic diagram showing the relative positions of the two side sealing strips when the refrigerator door of the present invention begins to open;

[0054] Figure 27 This is a comparison diagram of the relative position of the refrigerator door to the cabinet when it is rotated open to G1 and the relative position of the refrigerator door to the cabinet when it is rotated open to G1 only around the guide center axis.

[0055] Figure 28 This is a comparison diagram of the relative position of the refrigerator door to the cabinet when it is rotated open to G2 and the relative position of the refrigerator door to the cabinet when it is rotated open to G2 only around the guide center axis.

[0056] Figure 29 This is a comparison diagram of the relative position of the refrigerator door to the cabinet when it is rotated open to G3 and the relative position of the refrigerator door to the cabinet when it is rotated open to G3 only around the guide center axis.

[0057] Figure 30 This is a comparison diagram of the relative position of the refrigerator door to the cabinet when it is rotated open to G4 and the relative position of the refrigerator door to the cabinet when it is rotated open to G4 only around the guide center axis.

[0058] Figure 31 This is a comparison diagram of the relative position of the refrigerator door to the cabinet when it is rotated open to G5 and the relative position of the refrigerator door to the cabinet when it is rotated open to G5 only around the guide center axis.

[0059] Figure 32 The refrigerator door of this invention rotates open to G. max At that time, its relative position to the box body and the door body only rotate around the guide center axis to open to G. max A comparison diagram showing its relative position to the box body;

[0060] Figure 33 This is a comparison diagram of the movement of the first side edge W and the side sealing edge H during the door rotation opening process of the refrigerator of the present invention and the door rotation opening process only around the guide center axis;

[0061] Figure 34 This is a schematic diagram of one structure of the hinge of the refrigerator of the present invention;

[0062] Figure 35 This is an exploded structural diagram of another structure of the hinge located at the upper end of the door of the refrigerator of the present invention.

[0063] Figure 36 yes Figure 35 A schematic diagram of the exploded structure of the central hinge from another perspective;

[0064] Figure 37 This is an exploded structural diagram of a hinge structure located at the lower end of the door of the refrigerator.

[0065] Figure 38 yes Figure 31 A schematic diagram of the assembly structure of the hinge located at the lower end of the door body;

[0066] Figure 39 This is an exploded structural diagram of another structure of the hinge located at the lower end of the door of the refrigerator.

[0067] Figure 40 yes Figure 39 A structural schematic diagram of the hinge located at the lower end of the door from another perspective;

[0068] Figure 41 This is an exploded structural diagram of another structure of the hinge located at the lower end of the door of the refrigerator.

[0069] Figure 42 This is a schematic diagram of the assembly structure of the locking block at the lower end of the refrigerator door and the door body of the present invention;

[0070] Figure 43 This is an exploded structural diagram of the locking block at the lower end of the refrigerator door and the door body of the present invention;

[0071] Figure 44 This is a schematic diagram of the locking block of the refrigerator of the present invention;

[0072] Figure 45 This is a schematic diagram showing the relative positions of the hook and the stop when the refrigerator door is closed according to the present invention.

[0073] Figure 46 This is a schematic diagram showing the relative positions of the hook and stop parts from another perspective when the refrigerator door of the present invention is in the closed state.

[0074] Figure 47 This is a schematic diagram showing the relative positions of the hook and stop parts when the refrigerator door of the present invention is opened;

[0075] Figure 48 This is a schematic diagram showing the relative positions of the hook and stop parts when the refrigerator door of the present invention is opened from another perspective.

[0076] Figure 49 This is a schematic diagram showing the relative positions of the hook and stop parts when the refrigerator door of the present invention is opened to 90°.

[0077] Figure 50 This is a schematic diagram showing the relative positions of the hook and stop parts when the refrigerator door of the present invention is opened to 90° from another perspective.

[0078] Figure 51 This is a schematic diagram showing the relative positions of the hook and stop parts when the refrigerator door of the present invention is opened to its maximum angle.

[0079] Figure 52 This is a schematic diagram showing the relative positions of the hook and stop parts when the refrigerator door of the present invention is opened to its maximum angle from another perspective.

[0080] Figure 53 This is an exploded structural diagram of the door mounting block and the door body in another embodiment of the refrigerator of the present invention;

[0081] Figure 54 yes Figure 53 Another perspective structural diagram of the mounting block;

[0082] Figure 55 yes Figure 53 A schematic diagram of the assembly structure of the mounting block and the door body.

[0083] In the above figures: Box body 10; Door body 30; Front wall of door 31; Side wall of door 32; Rear wall of door 33; First side edge W; Side sealing edge H; Hinge plate 40; Connecting part 401; Extension part 402; Door seal 2; Side sealing strip 3; Hinge shaft 4; Guide block 5; Positioning center shaft P; Guide center shaft I; Positioning groove 6; First trajectory line S; Starting positioning point P0; First positioning point P1; Second positioning point P2; Third positioning point P3; Fourth positioning point P4; Fifth positioning point P5; Sixth positioning point P6; Guide groove 7; Second trajectory line K; First guide strip 8; Second guide strip 9; First guide end point K1; Second guide... Endpoint K2; Starting guide point I0; First guide point I1, Second guide point I2, Third guide point I3, Fourth guide point I4, Fifth guide point I5, Sixth guide point I6; Positioning shaft 60; First through hole 51; Second through hole 52; First positioning hole 53; Second positioning hole 54; Recess 55; First protrusion 34; Second protrusion 35; Gap groove 36; Receiving groove 37; Door end cover 38; Stop part 41; Hook gap 42; Receiving cavity 39; Lock hook 82; Root connection part 83; Hook part 84; Insert plate 85; Card protrusion 371; Groove bottom 70; Circumferential groove wall 71; Groove opening 72; Plate body 81; Card interface 86. Detailed Implementation

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] Figures 1-33 This is a schematic diagram illustrating the door opening process in this application; see reference. Figure 1 The refrigerator includes a cabinet 10 having a storage compartment, a door 30 connected to the cabinet 10 for opening and closing the storage compartment, and a refrigeration unit for supplying cold air to the storage compartment. The refrigeration unit is prior art and will not be described in detail here.

[0089] The cabinet 10 includes an inner liner defining a storage compartment, an outer shell connected to the outside of the inner liner to form the appearance of a refrigerator, and an insulation layer disposed between the inner liner and the outer shell to insulate the storage compartment. The cabinet 10 defines a plurality of storage compartments. In this embodiment, the plurality of storage compartments include a refrigerator compartment and a freezer compartment located below the refrigerator compartment.

[0090] 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 is rotatably connected to the cabinet 10 by a hinge located at the top and a hinge located at the bottom.

[0091] The enclosure 10 includes a first side wall and a second side wall (i.e., the left and right side walls 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 side wall 32 that is close to the hinge and connected to the front wall 31, and a rear wall 33 that is close to the enclosure 10 and opposite 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 door 30 is closed; 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 when the door 30 is closed.

[0092] The front wall 31 and side wall 32 of the door body 30 intersect to form the first side edge W. It should be noted that when both the front wall 31 and side wall 32 are planar, the line of intersection of the two planes is theoretically the first side edge W. In actual manufacturing, based on the rounded transition at the intersection of the front wall 31 and side wall 32, a curved surface is formed. For ease of description in this application, a straight line extending along the length of the door body 30 and parallel to the theoretical first side edge W on this curved surface is used to represent the first side edge W. Furthermore, a plane passing through the centroid of the door body 30 and parallel to the front wall 31 is denoted as the centroid plane F. During the opening of the door body 30, the centroid plane F moves with the door body 30. In this embodiment, the centroid plane F is determined using the geometric center of the door body 30 as the centroid for description.

[0093] A door seal 2 is provided on the rear wall 33 of the door body 30. When the door body 30 is closed, the door seal 2 fits against the front face of the box body surrounding the access opening to effectively seal the fit between the door body 30 and the box body 10, thereby ensuring that the door seal 2 seals the access opening and preventing cold air from escaping. In this embodiment, the door seal 2 includes a side seal near the door side wall 32, and the edge of the door seal 2 (side seal) near the door side wall 32 and away from the front wall 31 is denoted as the side seal edge H.

[0094] Reference Figures 2 to 7 The hinge has a guide block 5 and a hinge shaft 4 fixed to and perpendicular to the guide block 5. The guide block 5 is a flat plate with a circular cross-section. It should be noted that the circular cross-section of the guide block 5 includes a standard circle of equal radius as defined mathematically, as well as a non-standard circle that deviates from the standard circle due to manufacturing or assembly errors or slight deformation, but still possesses circular characteristics and can be approximated as a circle.

[0095] A guide groove 7 is provided at the end of the door body 30 near the hinge. The extension direction of the guide groove 7 is consistent with the direction from the front wall 31 to the rear wall 33; that is, the guide groove 7 extends from the front wall 31 to the rear wall 33. In this embodiment, the guide groove 7 is defined by a first guide bar 8 and a second guide bar 9 arranged in parallel. A positioning groove 6 is provided in the area between the first guide bar 8 and the second guide bar 9; that is, the positioning groove 6 is located at the bottom of the guide groove 7. The positioning groove 6 is arranged along the direction from the first guide bar 8 to the second guide bar 9. In addition, both the first guide bar 8 and the second guide bar 9 extend along the direction from the front wall 31 to the rear wall 33, and the first guide bar 8 is located on the side of the second guide bar 9 away from the door side wall 32. In this embodiment, both the first guide bar 8 and the second guide bar 9 are parallel to the door side wall 32.

[0096] It should be noted that the guide groove 7 is not limited to the form defined by the first guide bar 8 and the second guide bar 9. It can be formed directly at the end of the door body in a recessed shape. The guide block 5 cooperates with the two opposite groove walls of the guide groove 7 (the two side walls parallel to the door side wall 32). The positioning groove 6 is formed on the bottom of the guide groove 7.

[0097] In this embodiment, the hinge shaft 4 is adapted to the positioning groove 6, and the guide block 5 is adapted to the guide groove 7. The two opposite walls of the guide block 5 and the guide groove 7 are always in clearance fit. The clearance fit can be set within the range of 0-0.3mm; that is, it includes both principle-based contact fit and minute gaps due to product manufacturing processes. As an optional configuration, the diameter of the guide block 5 is 'a', and the width of the guide groove 7 is equal to the diameter of the guide block 5; that is, the width of the guide groove 7 (the distance between the first guide bar 8 and the second guide bar 9) is 'a'. When the guide block 5 moves relative to the guide groove 7, the guide block 5 is always tangent to the first guide bar 8 and the second guide bar 9. During the rotational opening or closing of the door 30, the hinge shaft 4 moves relative to the positioning groove 6, and the guide block 5 moves relative to the guide groove 7.

[0098] It should be noted that the embodiments of this application are only described using the example of the hinge shaft 4 and guide block 5 being set on the hinge, and the positioning groove 6 and guide groove 7 being set on the door body 30.

[0099] 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.

[0100] Specifically, the hinge at the upper end of the door 30 includes a hinge plate 40 connected to the top wall of the housing 10, with a hinge shaft 4 and a guide block 5 located on the hinge plate 40. The hinge plate 40, hinge shaft 4, and guide block 5 can be integrally formed; however, alternatively, the hinge plate 40, hinge shaft 4, and guide block 5 can be provided separately and assembled together. The hinge shaft 4 and guide block 5 are formed on the extension 402, with the hinge shaft 4 extending vertically downwards.

[0101] For the hinge at the lower end of the door body 30, the connecting part 401 is connected to the front end face of the housing 10, and the extension part 402 extends away from the front end face of the housing 10. The hinge shaft 4 and the guide block 5 are on the extension part 402, and the hinge shaft 4 extends upward.

[0102] Corresponding to the position of the hinge plate 40, both the upper and lower ends of the door body 30 are provided with positioning grooves 6 and guide grooves 7. The two positioning grooves 6 at the upper and lower ends of the door body 30 are vertically aligned, and the two guide grooves 7 are vertically aligned as well. This ensures that the hinge located at the upper end of the door body 30 moves synchronously with the hinge located at the lower end of the door body 30.

[0103] In this embodiment, as Figures 2-7 As shown, see Figure 8 The plane containing the side of the box 10 near the hinge plate 40 (the first body sidewall) is defined as the reference plane M0. The side of the reference plane M0 away from the inner cavity of the storage room is called the outer side, and the opposite side near the storage room is called the inner side.

[0104] The refrigerator includes two doors 30 arranged opposite each other, which work together to open or close the access hatch. Each door 30 has a side sealing strip 3 on its side away from its side wall 32. When both doors 30 are closed, the side sealing strip 3 on one door 30 seals against the side sealing strip 3 on the other door 30; that is, when both doors 30 are closed, the two side sealing strips 3 are pressed into the gap between the two doors 30 to effectively seal the space between the two doors 30 and the refrigerator body, preventing cold air from escaping. When the refrigerator uses traditional hinges (hinges that open by simple rotation), when one door 30 is opened, because the two side sealing strips 3 are tightly pressed when closed, the opened door 30 will cause the other door 30 to open as well. This increases the opening area of ​​the access hatch, increases the amount of cold air escaping, increases power consumption, and leads to a higher temperature inside the storage compartment, affecting food preservation. Therefore, in this invention, a track-changing mechanism is formed by the cooperation of the hinge and the door 30, so that the opened door 30 moves outward during the opening process, thereby preventing it from pulling the other door 30 to be opened.

[0105] In this embodiment, the positioning groove 6 is a curved groove; along the direction from the end away from the door sidewall 32 to the end closer to the door sidewall 32, the distance between the positioning groove 6 and the front wall 31 of the door first increases and then decreases. In this embodiment, the positioning groove 6 is a smooth curve. Figure 3 As shown, in the projection of the top wall of the box 10, the projection line of the front wall 31 of the door is denoted as the x-axis, the projection line of the inner wall of the guide groove 7 away from the side wall 32 of the door (the first guide bar 8) is denoted as the y-axis, and the intersection of the x-axis and the y-axis is denoted as the origin O (0, 0); where the x-axis is positive in the direction from the first guide bar 8 to the second guide bar 9; the y-axis is positive in the direction from the front wall 31 of the door to the rear wall 33 of the door.

[0106] The center trajectory line of the positioning groove 6 is denoted as the first trajectory line S; the center first trajectory line S is denoted as the function f(x) in this coordinate system, and f(x) is located in the first quadrant of the xOy coordinate system; as a settable mode, as x increases, f(x) first increases and then decreases. That is, f(x) has only one extreme point. In this embodiment, f(x) is an upwardly convex function.

[0107] As an optional feature, the positioning groove 6 includes a first groove segment away from the door sidewall 32 and a second groove segment close to the door sidewall 32. Along the direction from the end away from the door sidewall 32 to the end close to the door sidewall 32, the distance between the first groove segment and the front wall 31 gradually increases, while the distance between the second groove segment and the front wall 31 gradually decreases. The first groove segment and the second groove segment are connected by a smooth transition. The center trajectory lines corresponding to the first groove segment and the second groove segment are respectively denoted as the first trajectory segment and the second trajectory segment; the smooth transition between the first trajectory segment and the second trajectory segment forms the first trajectory line S.

[0108] It can be configured that both the first and second groove segments are arc-shaped grooves. That is, both the first and second track segments are arc-shaped. As an optional configuration, the first and second track segments are tangent; that is, the first and second groove segments are tangent to form a smooth positioning groove 6.

[0109] As another configurable method, a transition groove segment is set to connect the first groove segment and the second groove segment; the first groove segment, the transition groove segment, and the second groove segment are smoothly connected; wherein, the center trajectory line of the transition groove segment is denoted as the transition trajectory segment; it can be configured that the first trajectory segment, the transition trajectory segment, and the second trajectory segment are tangent; that is, the first groove segment and the second groove segment are both tangent to the transition groove segment to form a smooth positioning groove 6.

[0110] Defined by the curved shape of the positioning groove 6, the first trajectory line S is curved. The first trajectory line S extends from the side away from the door sidewall 32 towards the side closer to the door sidewall 32, and the distance between the first trajectory line S and the front wall 31 first increases and then decreases. Furthermore, in this embodiment, the guide groove 7 is straight; that is, the guide groove 7 is composed of a straight section. The center line of the extending direction of the guide groove 7 is denoted as the second trajectory line K. Since the guide groove 7 is always tangent to the guide block 5, the guide center axis I of the guide block 5 always moves along the second trajectory line K. It should be noted that the descriptions in this embodiment are standard theoretical settings, including structural settings that deviate from the standard theoretical settings due to manufacturing or assembly errors or slight deformations, but still possess the characteristics.

[0111] In this embodiment, the hinge shaft 4 cooperates with the positioning groove 6, and the guide block 5 cooperates with the guide groove 7, so that the door 30 can move a certain distance outward (away from the side wall of the second body) while rotating, so as to avoid the side sealing strips 3 installed on the two opposing door bodies 30 interfering with each other when the door 30 is opened, effectively preventing the other door body 30 from being driven when only one of the two door bodies 30 is opened, thus increasing the loss of cold air. As another arrangement, the door 30 moves a certain distance forward (away from the box body) while opening and moving outward, so as to avoid the door body 30 squeezing the door seal 2 when it is opened, and to prevent the door body 30 from interfering with the box body 10 and affecting the opening of the door body 30.

[0112] Since there is a relative motion relationship between the positioning groove 6 and the hinge shaft 4, and between the guide groove 7 and the guide block 5, if the door 30 is opened, with the positioning groove 6 and the guide groove 7 as stationary reference points, it is equivalent to the hinge shaft 4 moving within the positioning groove 6 and the guide block 5 moving within the guide groove 7. For ease of description, this application will first use the positioning groove 6 and the guide groove 7, which are in relatively fixed positions, as reference points, and describe the movement of the hinge shaft 4 and the guide block 5 relative to these reference points.

[0113] In this embodiment, the central axis of the hinge shaft 4 is denoted as the positioning central axis P, and the central axis of the guide block 5 passing through the center of its cross-section is denoted as the guide central axis I; the radius of the circular cross-section of the guide block 5 passing through the positioning central axis P is denoted as IA; where A is the intersection point on the boundary of the circular cross-section of the guide block 5 and the radius of the cross-section of the guide block 5 passing through the positioning central axis P. That is, I, P, and A are on the same straight line and on the radius IA of the circular cross-section of the guide block 5. In this embodiment, in the projection of the top wall of the box 10, the length of line segment IP is greater than that of line segment AP, which effectively increases the limiting effect of the hinge shaft 4 and the guide block 5 on the door 30 and increases the connection stability between the door 30 and the box 10; where line segment IP is denoted as the axis line segment IP, radius IA is denoted as the axis radius IA, and A is denoted as the axis radius point A. As a settable method, IP / AP can be any value of 2 to 3.

[0114] As one feasible approach, the plane passing through the guide center axis I and parallel to the reference plane M0 is denoted as the first reference plane M1. In the projection of the top wall of the housing 10, the axial radius IA is located on the side of the first reference plane M1 away from the reference plane M0, and on the side of the plane passing through the guide center axis I and parallel to the front wall 31 of the door when the door is closed, closer to the housing 10; that is, from I to A, the distance between IA and the first reference plane M1 increases monotonically and linearly. In this embodiment, the positioning center axis P is located on the side of the guide center axis I closer to the pick-up and drop-off port, which increases the limiting effect of the hinge axis 4 and the guide block 5 on the door 30, and increases the connection stability between the door 30 and the housing 10. In addition, in this embodiment, the positioning center axis P is located on the side of the guide center axis I closer to the pick-up and drop-off port and away from the first body side wall. The above settings effectively increase the outward movement angle range of the door 30 during rotation, allowing the door 30 to maintain a large outward movement trend during rotation. On the one hand, this avoids mutual interference between the side sealing strips 3 installed on the two opposing door 30s, reducing cold loss; on the other hand, it reduces the lateral obstruction of the access opening by the door seal 2 installed on the rear wall 33 of the door, thereby increasing the lateral size of the drawer installed in the storage room and increasing the space utilization of the storage room. In addition, the hinge shaft 4, which cooperates with the positioning groove 6, is located on the side of the guide center axis I near the access opening and away from the side wall of the first body. The hinge shaft 4 cooperates with the guide block 5 to enhance the connection firmness of the door 30 close to the cabinet 10, effectively enhancing the connection stability of the door and increasing the stability of the door 30 when opening, reducing shaking and improving the user experience.

[0115] In some embodiments of this application, the angle between the axial radius IA and the first reference plane M1 in the projection of the top wall of the box 10 is denoted as the first included angle θ, which is any value between 25° and 35°; it can be set, and in this embodiment, θ = 30°.

[0116] In some embodiments of this application, the radius of the hinge shaft 4 is denoted as r, and the radius of the guide block 5 is denoted as R; where r / R is any value from 0.7 to 0.8. The above radius setting, on the one hand, makes reasonable use of the thickness space of the door body 30 to arrange the positioning groove 6 and the guide groove to achieve the purpose of opening the door body 30 to the maximum angle; on the other hand, it ensures the strength of the hinge shaft 4 and the guide block 5; in addition, the cooperation between the hinge shaft 4 and the positioning groove 6, and the cooperation between the guide block 5 and the guide groove 7, increases the stability of the door body 30 when opening.

[0117] like Figures 8-23 As shown, the movement of hinge axis 4 along positioning groove 6 is equivalent to the movement of positioning center axis P along the first trajectory line S. In this embodiment, hinge plate 40 is fixedly connected to guide block 5, and the movement of guide block 5 relative to guide groove 7 is equivalent to the movement of hinge plate 40 relative to guide groove 7, and also equivalent to the movement of box 10 relative to door 30. The movement of door 30 relative to box 10 is equivalent to the relative movement of the two within the plane containing the top wall of box 10 (or within a plane parallel to the top wall of box 10); that is, the movement of door 30 relative to box 10 can be reduced to a relative movement within a two-dimensional plane. Within the plane containing the top wall of box 10, the movement of axis segment IP relative to guide groove 7 is equivalent to the movement of axis segment IP relative to the second trajectory line K, and also equivalent to the movement of guide block 5 relative to guide groove 7, and also equivalent to the movement of box 10 relative to door 30.

[0118] In the following description, for ease of explanation, the movement of the positioning center axis P along the first trajectory line S represents the movement of the hinge axis 4 along the positioning groove 6, and the movement of the axis segment IP relative to the second trajectory line K represents the movement of the guide block 5 relative to the guide groove 7; that is, the movement of the axis segment IP relative to the second trajectory line K represents the movement of the housing 10 (hinge plate 40) relative to the door 30. The second trajectory line K includes a first guide endpoint K1 near the front wall 31 of the door and a second guide endpoint K2 near the rear wall 33 of the door; the second trajectory line K extends in a straight line from the first guide endpoint K1 to the second guide endpoint K2. In some embodiments of this application, the second trajectory line K is perpendicular to the front wall 31 of the door to increase the efficiency of the door 30 moving outward and forward relative to the housing 10.

[0119] like Figures 8-23 As shown, the first trajectory line S includes a starting positioning point P0 away from the door side wall 32 and a sixth positioning point P6 close to the door side wall 32; the first trajectory line S extends along a curve from the starting positioning point P0 to the side close to the door side wall 32 to the sixth positioning point P6, and the distance between the first trajectory line S and the front wall 31 of the door first increases and then decreases.

[0120] In this embodiment, the first trajectory line S is closer to the rear wall 33 than the front wall 31. When the user opens the door 30, the external force applied to the door 30 mainly acts on the side of the door 30 closest to the front wall 31 and furthest from the side wall 32. In this embodiment, the positioning groove 6 is closer to the rear wall 33 than the front wall 31, so that the hinge axis 4 positions the door 30 near the rear wall 33 and near the side wall 32 when it is opened, effectively improving the balance of force and making the mechanical stability of the door 30 good when it is opened, ensuring the smoothness and stability of the door 30's movement; at the same time, it also ensures the strength of the door 30 and the positioning groove 6. In this embodiment, the distance between the starting positioning point P0 and the front wall 31 is denoted as D0, the distance between the sixth positioning point P6 and the front wall 31 is denoted as D1, and the distance between the sixth positioning point P6 and the rear wall 33 is denoted as D2. Wherein, D0≥D1>D2; that is, it can be set, D2:D1∈[1 / 2,1]. The above settings enable a more balanced application of force and match user habits, enhancing the stability and smoothness of door 30 opening. Optionally, in the projection of the top wall of the housing 10, the midpoint between the front wall 31 and the rear wall 33 is designated as the mid-plane (in this embodiment, the mid-plane and the centroid plane F are the same plane), and the distance between the mid-plane and the front wall 31 is equal to its distance from the rear wall 33; the positioning groove 6 is located in the area between the mid-plane and the rear wall 33. In this embodiment, 14mm ≤ D2 ≤ 18mm; in the current example, D2 = 16mm and D1 = 32mm are set. The thickness of door 30 is between 45mm and 55mm.

[0121] In this embodiment, the positioning groove 6 is curved and protrudes towards the rear wall 33 of the door; the center line (second trajectory line K) of the guide groove 7 along its extension direction is parallel to the side wall 32 of the door, so that when the hinge shaft 4 drives the guide block 5 to move relative to the positioning groove, a significant displacement is generated in the inward and outward directions (lateral / refrigerator width direction), causing the door 30 to move outward. Specifically, in this embodiment, the front wall 31 of the door is perpendicular to the side wall 32 of the door; the first guide bar 8 and the second guide bar 9 are both perpendicular to the front wall 31 of the door, that is, the second trajectory line K is perpendicular to the front wall 31 of the door. In this embodiment, the second trajectory line K is perpendicular to the front wall 31 of the door and parallel to the side wall 32 of the door. The first trajectory line S extends from the starting positioning point P0 along the curve protruding towards the rear wall 33 of the door to the sixth positioning point P6. The above arrangement effectively utilizes the thickness of the door 30, on the one hand making the rotation and movement of the guide block 5 relative to the guide groove 7 smoother, and on the other hand making the door 30 move outward and forward a certain distance during the rotation and opening process.

[0122] The above positioning groove 6 effectively limits the movement of the hinge shaft 4, and the guide groove 7 effectively limits the movement of the guide block 5, so that the guide block 5 moves in conjunction with the hinge shaft 4 within the guide groove 7, thereby causing the door 30 to move outward and forward a certain distance during the opening process, and ensuring the stability and smoothness of the door 30's rotation opening.

[0123] In some embodiments of this application, the two ends of the positioning groove 6 are located near the centroid plane F; it can be configured such that the distance between the two ends of the positioning groove 6 and the centroid plane F is less than 1 cm; so that the door 30 can be effectively supported in the closed state and the state opened to the maximum angle, thereby improving the stability of the door 30 in maintaining this state.

[0124] like Figure 8 As shown, in some embodiments of the application, when the door 30 is in the closed state, the positioning center axis P is located at the starting positioning point P0 of the first trajectory line S, and the guide block 5 simultaneously cooperates with the first guide strip 8 and the second guide strip 9. It should be noted that, throughout the entire opening process of the door 30, the guide block 5 always simultaneously cooperates with the first guide strip 8 and the second guide strip 9; within the projection of the plane containing the top wall of the housing 10,

[0125] 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 specific positions of the hinge shaft 4 relative to the positioning groove 6 and the guide block 5 relative to the guide groove 7 are as follows:

[0126] Wherein, φ represents the opening angle of the door 30, and the opening angle φ = 0° when the door 30 is closed;

[0127] like Figure 8 As shown, when φ=0°, the door 30 is in the closed state; the positioning center axis P is located at the starting positioning point P0 of the first trajectory line S, away from the door sidewall 32, and the guide block 5 simultaneously cooperates with the first guide strip 8 and the second guide strip 9. Figure 16 When φ=0°, the guide center axis I, the positioning center point P, and the axis radius point A of the guide block 5 are located at I0, P0, and A0 respectively within the guide groove 7. Among them, I0 is located on the second trajectory line K.

[0128] like Figures 9-11 As shown, when φ∈(0°, G3), the door 30 rotates from the closed state to G3 (excluding the endpoint value); during the above opening process, the guide block 5 cooperates with the first guide bar 8 and the second guide bar 9 at the same time; the positioning center axis P gradually approaches the rear wall 33 and the side wall 32 of the door along the first trajectory line S.

[0129] As described above, when the door 30 opens at angles φ∈(0°, G3), the engagement relationship between the guide block 5 and the guide groove 7 within this opening angle range is the same, and both the first guide bar 8 and the second guide bar 9 always engage with the guide block 5; the movement trend of the positioning center axis P relative to the first trajectory line S is the same. The difference lies in that: with different opening angles, the engagement point between the guide block 5 and the guide groove 7 is different, and the position of the positioning center axis P relative to the first trajectory line S is different. Thus, when the opening angle φ∈(0°, G3), any one of the opening angles can represent the relative positions of the guide block 5 and the guide groove 7, and the hinge axis 4 and the positioning groove 6 when the door 30 is opened to the corresponding range; specifically, as shown in the figure... Figure 9 As shown, the state diagram when φ=G1; Figure 10 The diagram shows the state when φ=G2; where 0°<G1<G2<G3; φ=G1 or G2 can represent the coordination state within this interval.

[0130] like Figure 9 As shown, when the door 30 is opened G1, the positioning center axis P is located at the first positioning point P1 on the first trajectory line S. The first positioning point P1 is located on the side of the starting positioning point P0 that is close to the door side wall 32 and away from the door front wall 31; see also Figure 16 When φ=G1, the guide center axis I, positioning center point P, and axis radius point A of the guide block 5 are located at I1, P1, and A1 respectively in the guide groove 7. Among them, I1 is located on the second trajectory line K and is located on the side of I0 away from the front wall 31 of the door; that is, I1 is located on the side of I0 closer to K2.

[0131] like Figure 10 As shown, when the door 30 is opened (G2), the positioning center axis P is located at the second positioning point P2 on the first trajectory line S. The second positioning point P2 is located on the side of the first positioning point P1 that is close to the door side wall 32 and away from the door front wall 31. See also... Figure 17 When φ=G2, the guide center axis I, positioning center point P, and axis radius point A of the guide block 5 are located at I2, P2, and A2 respectively in the guide groove 7. Among them, I2 is located on the second trajectory line K and is located on the side of I1 away from the front wall 31; that is, I2 is located on the side of I1 closer to K2.

[0132] like Figure 11 As shown, when φ=G3, the door 30 opens to G3; the positioning center axis P is located at the third positioning point P3 on the first trajectory line S, and the third positioning point P3 is located on the side of the second positioning point P2 near the door side wall 32 and away from the front wall 31; the guide block 5 simultaneously cooperates with the first guide strip 8 and the second guide strip 9. In this embodiment, the third positioning point P3 is the point where the distance between the first trajectory line S and the rear wall 33 of the door is the smallest. That is, in the xOy coordinate system, the third positioning point P3 is the extreme point of f(x). Figure 18When φ=G3, the guide center axis I, positioning center point P, and axis radius point A of the guide block 5 are located at I3, P3, and A3 respectively within the guide groove 7. Specifically, I3 is located on the second trajectory line K, and on the side of I2 furthest from the front wall 31; that is, I3 is located on the side of I2 closer to K2. (Combined with...) Figure 15 Among them, I0, I1, I2, and I3 are all located on the second trajectory line K, and are arranged sequentially from the front wall 31 to the rear wall 33. In this embodiment, as shown... Figure 11 As shown, G3 ∈ [48°, 52°] any value; that is, when the door 30 is opened to about 50°, the positioning center point P moves to the third positioning point P3, which is closest to the rear wall 33 of the door, on the first trajectory line S.

[0133] like Figures 11-12 As shown, when φ∈(G3,G4], the door 30 rotates from G3 to G4; during the opening process, the guide block 5 simultaneously cooperates with the first guide bar 8 and the second guide bar 9; the positioning center axis P moves along the first trajectory line S towards the door side wall 32 and the door front wall 31.

[0134] As described above, when the door 30 opens at angles φ∈(G3, G4), the cooperation relationship between the guide block 5 and the guide groove 7 within this opening angle range is the same, and both the first guide bar 8 and the second guide bar 9 always cooperate with the guide block 5; the movement trend of the positioning center axis P relative to the first trajectory line S is the same. The difference lies in that: with different opening angles, the points where the guide block 5 and the guide groove 7 cooperate are different, and the positions of the positioning center axis relative to the first trajectory line S are different. Thus, when the opening angle φ∈(G3, G4), any one of the opening angles can represent the relative positions of the guide block 5 and the guide groove 7, and the hinge axis 4 and the positioning groove 6 when the door 30 is opened to the corresponding range; specifically, as shown in the figure... Figure 12 The diagram shows the state when φ=G4.

[0135] When the door 30 opens G4, the positioning center axis P is located at the fourth positioning point P4 on the first trajectory line S. The fourth positioning point P4 is located between the third positioning point P3 and the sixth positioning point P6, and the fourth positioning point P4 is located on the side of the third positioning point P3 closest to the door side wall 32 and the door front wall 31; combined with Figure 19 When φ=G4, the guide center axis I, positioning center point P, and axis radius point A of the guide block 5 are located at I4, P4, and A4 respectively within the guide groove 7. Specifically, I4 is located on the second trajectory line K and on the side of I3 furthest from the front wall 31; that is, I4 is located on the side of I3 closest to K2. As one feasible implementation, G4=90°.

[0136] like Figures 12-14 As shown, φ∈(G4, G maxWhen the door 30 is rotated open from G4 (G4=90°) to G... max (>90°) process; during the above opening process, the guide block 5 cooperates with the first guide bar 8 and the second guide bar 9 at the same time; the positioning center axis P moves along the first trajectory line S towards the direction close to the door side wall 32 and the door front wall 31.

[0137] The above, such as Figures 12-14 As shown, the door opening angle φ∈(G4, G) is 30°. max When the opening angle is within the specified range, the guide block 5 and guide groove 7 have the same engagement relationship, and both the first guide bar 8 and the second guide bar 9 always engage with the guide block 5; the movement trend of the positioning center axis P relative to the first trajectory line S is the same. The difference lies in that: with different opening angles, the engagement point of the guide block 5 and guide groove 7 is different, and the position of the positioning center axis relative to the first trajectory line S is different. Thus, the opening angle satisfies (G4, G... max When any of the opening angles can represent the door 30 opening to the corresponding interval (G4, G...), then... max The relative positions of guide block 5 and guide groove 7, hinge shaft 4 and positioning groove 6 at that time; specifically, such as Figure 13 φ=G5∈(G4, G max The state diagram shows that φ=G5 can represent the coordination state within this interval.

[0138] like Figure 13 As shown, when door 30 is opened (G5) max >G5>G4=90°), the positioning center axis P is located at the fifth positioning point P5 on the first trajectory line S, and the fifth positioning point P5 is located on the side of the fourth positioning point P4 near the front wall 31 and the side wall 32 of the door. Combined with Figure 20 When φ=G5, the guide center axis I, positioning center point P, and axis radius point A of the guide block 5 are located at I5, P5, and A5 respectively within the guide groove 7. Among them, I5 is located on the second trajectory line K and is located on the side of I4 away from the front wall 31; that is, I5 is located on the side of I4 closer to K2. It can be set that G5∈[100°, 105°].

[0139] like Figure 14 As shown, door 30 opens G max Time (G) max (>90°), the positioning center axis P is located at the sixth positioning point P6 of the first trajectory line S, and the sixth positioning point P6 is located on the side of the fifth positioning point P5 away from the sixth positioning point P6; at this time, the hinge axis 4 is located at the end of the positioning groove near the door side wall 32, that is, the positioning center axis P is located at the end of the first trajectory line S near the door side wall 32. Combined with Figure 21 , φ=G maxAt this time, the guide center axis I, positioning center point P, and axis radius point A of the guide block 5 are located at I6, P6, and A6 respectively within the guide groove 7. Specifically, I6 is located on the second trajectory line K and on the side of I5 furthest from the front wall 31; that is, I6 is located on the side of I5 closest to K2. As a configurable method, G... max ∈[112°, 120°]. In this embodiment, φ=G max =116°.

[0140] Among them, 0° < G1 < G2 < G3 < G4 < G5 < G max The initial positioning point P0, the first positioning point P1, the second positioning point P2, the third positioning point P3, the fourth positioning point P4, the fifth positioning point P5, and the sixth positioning point P6 are sequentially distributed along the first trajectory line S towards the side wall 32 of the door. In this embodiment, the opening angles of the door 30 are sequentially denoted as the first angle G1, the second angle G2, the third angle G3, the fourth angle G4, the fifth angle G5, and the maximum angle G6. max .

[0141] Door 30 opens from the closed state to its maximum angle G max During the process, the hinge shaft 4 moves relative to the positioning groove 6 towards the door side wall 32, and the guide block 5 moves relative to the guide groove 7 away from the front wall 31.

[0142] As can be seen from the above, during the entire opening process of the door 30, the two opposite walls of the guide groove 7 engage with the guide block 5. From the angle of the movement trend of the hinge shaft 4 relative to the positioning groove 6, when φ=0°, the hinge shaft 4 is located at the end of the positioning groove 6 furthest from the door side wall 32; when φ=G3, the hinge shaft 4 moves to the position where the positioning groove 6 is closest to the rear wall 33 of the door. φ=G max At this time, the hinge shaft 4 moves to the end of the positioning groove 6 near the door side wall 32. That is, from the angle of the movement trend of the hinge shaft 4 relative to the positioning groove 6, φ=G3 opens the door 30 from the closed state to G. max The process is divided into two stages. The following explanation of these two stages focuses on the movement trend of the hinge shaft 4 relative to the positioning groove 6:

[0143] The first stage, combined with Figures 16-18 ,like Figure 22 As shown, the process of the door 30 rotating from the closed state to G3 (<90°) is illustrated.

[0144] In this first stage, the door 30 opens sequentially from 0° through G1 and G2 to G3. During this process, the positioning center axis P moves from the starting positioning point P0 along the first trajectory line S towards the door side wall 32 and the door rear wall 33; specifically, the positioning center axis P moves from the starting positioning point P0 along the first trajectory line S, passing through the first positioning point P1 and the second positioning point P2, towards the door side wall 32 and the door rear wall 33 to the third positioning point P3; the guide center axis I of the guide block 5 moves relative to the guide groove 7 from the starting guide point I0 along the second trajectory line K towards the second guide endpoint K2 (near the door rear wall 33); specifically, the guide center axis I moves from the starting guide point I0 along the second trajectory line K, passing through the first guide point I1 and the second guide point I2, towards the door rear wall 33 to the third guide point I3.

[0145] In this application, 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; the side of the reference plane M0 away from the inner cavity of the storage room is defined as the outer side, and the opposite side closer to the storage room is defined as the inner side; this definition of the direction of use by the user is used as the reference for explanation.

[0146] During the first stage of opening (0°~G3) of the door 30, the second trajectory line K is parallel to the door side wall 32. As the door 30 rotates counterclockwise relative to the housing 10, the second trajectory line K also rotates counterclockwise during this first stage of opening. During this first stage, the second trajectory line K starts rotating counterclockwise from a state parallel to the reference plane M0. The angle between the second trajectory line K and the plane containing the retrieval opening gradually decreases, while the angle between it and the reference plane M0 gradually increases. That is, during this first stage of opening, relative to the housing 10, in the direction from the rear door wall 33 to the front door wall 31, the second trajectory line K extends away from the second side wall and away from the retrieval opening. In other words, during this first stage of opening, in the direction from the rear door wall 33 to the front door wall 31 (from the second guide endpoint K2 to the first guide endpoint K1), the second trajectory line K always extends outward and forward. That is, during the process of the door 30 opening from the closed state to G3, the second trajectory line K extends inward and backward along the direction from the first guide endpoint K1 to the second guide endpoint K2.

[0147] During the opening process in the first stage described above, taking the positioning groove 6 and guide groove 7 as references, when the door 30 opens from 0° to G3, the axis line segment IP rotates clockwise from I0P0 and moves inward and backward sequentially to I1P1, I2P2, and I3P3 (I0P0→I1P1→I2P2→I3P3). Since the positioning groove 6 and guide groove 7 are set on the door 30, and the axis line segment IP represents the movement of the guide block 5 set on the housing 10, it can be concluded that: taking the door 30 as a reference, during the entire process of opening the door 30 from the closed state to G3, the housing 10 (i.e., the guide block 5) maintains a clockwise rotation relative to the door 30 and moves towards the second guide endpoint K2 along the second trajectory line K; that is, the housing 10 maintains a clockwise and inward and backward tendency relative to the door 30.

[0148] Based on the relativity of motion, taking the housing 10 as a reference (i.e., the guide block 5 as a reference), during the entire process of opening the door 30 from the closed state to G3, the door 30 (i.e., the positioning groove 6 and the guide groove 7) rotates counterclockwise relative to the housing 10 and moves towards the first guide endpoint K1; that is, the door 30 maintains a counterclockwise rotation relative to the housing 10 and tends to move outward and forward. In other words, during the entire process of opening the door 30 from the closed state to G3, the door 30 moves outward and forward a certain distance relative to the housing 10, thereby preventing the opened door 30 from causing another door 30 to open and resulting in heat loss.

[0149] The second stage, such as Figure 23 As shown, door 30 is rotated open from G3 to G... max (G) max During the process of >90°.

[0150] In this second stage, door 30 is opened sequentially from G3 through G4 and G5 to G... max During this process, the positioning center axis P moves from the third positioning point P3 along the first trajectory line S towards the door side wall 32 and the door front wall 31. Specifically, the positioning center axis P moves from the third positioning point P3 along the first trajectory line S towards the door side wall and the door front wall 31, passing through the fourth positioning point P4, the fifth positioning point P5, and finally to the sixth positioning point P6.

[0151] During the second stage of opening, before the door 30 rotates from G3 to G4 (G4=90°), the movement trend of the second trajectory line K is consistent with that in the first stage (not repeated here). That is, before the door 30 rotates from G3 to G4 (G4=90°), relative to the housing 10, the second trajectory line K always extends outward and forward in the direction from the second guide endpoint K2 to the first guide endpoint K1. That is, during the process of the door 30 opening from the closed state to G3, the second trajectory line K extends inward and backward in the direction from the first guide endpoint K1 to the second guide endpoint K2.

[0152] When the door 30 is opened to 90°, the second trajectory line K is parallel to the plane where the pick-up and drop-off port is located and perpendicular to the reference plane M0; that is, relative to the box 10, along the direction from the first guide endpoint K1 to the second guide endpoint K2, the second trajectory line K extends from the outside to the inside.

[0153] When door 30 is rotated open from G4 (G4=90°) to G max During the process, the second trajectory line K starts to rotate counterclockwise from a state perpendicular to the reference plane M0. The angle between the second trajectory line K and the plane where the pick-up and put-out opening is located gradually increases, while the angle between the second trajectory line K and the reference plane M0 gradually decreases. That is, when the door body 30 is rotated open from G4 (G4=90°) to G... max During the process, relative to the box body 10, along the direction from the rear wall 33 to the front wall 31 (from the second guide endpoint K2 to the first guide endpoint K1), the second trajectory line K always extends outward and backward. That is, the door body 30 rotates open from G4 (G4=90°) to G... max During the process, the second trajectory line K extends inward and forward from the direction from the first guide endpoint K1 to the second guide endpoint K2.

[0154] During the second stage of the opening process described above, the positioning groove 6 and the guide groove 7 are used as references for analysis.

[0155] (1) such as Figure 19As shown, when the door 30 is opened from G3 to G4, the axis segment IP rotates clockwise from I3P3 and moves inward and backward sequentially to I4P4 (I3P3→I4P4). During this process, the second trajectory line K extends inward and backward along the direction from the first guide endpoint K1 to the second guide endpoint K2. In addition, since the positioning groove 6 and the guide groove 7 are provided on the door 30, the axis segment IP represents the movement of the guide block 5 provided on the housing 10. Therefore, it can be concluded that: with the door 30 as the reference, during the entire process of the door 30 opening from G3 to G4, the housing 10 (i.e., the guide block 5) maintains a clockwise rotation relative to the door 30 and moves towards the second guide endpoint K2 along the second trajectory line K. Specifically, the guide center axis I moves from the third guide point I3 along the second trajectory line K towards the rear wall 33 of the door to the fourth guide point I4. That is, the housing 10 maintains a clockwise and inward and backward movement relative to the door 30.

[0156] Based on the relativity of motion, taking the housing 10 as a reference (i.e., the guide block 5 as a reference), during the entire process of opening the door 30 from G3 to G4, the door 30 (i.e., the positioning groove 6 and the guide groove 7) rotates counterclockwise relative to the housing 10 and moves towards the first guide endpoint K1; that is, the door 30 maintains a counterclockwise rotation relative to the housing 10 and tends to move outward and forward. In other words, during the entire process of opening the door 30 from the closed state to G3, the door 30 moves outward and forward a certain distance relative to the housing 10.

[0157] (2) For example Figures 19-21 As shown, see Figure 15 and Figure 23 Door 30 is opened from G4 to G max At this time, the axis line segment IP rotates clockwise from I4P4 and moves inward and backward sequentially to I6P6 (I4P4→I5P5→I6P6). During this process, the second trajectory line K extends inward and forward from the direction of the first guide endpoint K1 pointing to the second guide endpoint K2; in addition, since the positioning groove 6 and the guide groove 7 are set on the door body 30, the axis line segment IP represents the movement of the guide block 5 set on the box body 10; therefore, it can be concluded that: with the door body 30 as the reference, the door body 30 opens from G4 to G max Throughout the process, the housing 10 (i.e., the guide block 5) rotates clockwise relative to the door 30 and moves along the second trajectory line K towards the second guide endpoint K2; specifically, the guide center axis I moves from the fourth guide point I4 along the second trajectory line K, passing through the fifth guide point I5, towards the rear wall 33 of the door, to the sixth guide point I6. That is, the housing 10 maintains a clockwise and inward-forward tendency relative to the door 30.

[0158] Based on the relativity of motion, taking the box 10 as a reference (i.e., the guide block 5 as a reference), the door 30 opens from G4 to G... maxThroughout the process, the door 30 (i.e., the positioning groove 6 and the guide groove 7) rotates counterclockwise relative to the housing 10 and moves towards the first guide endpoint K1; that is, the door 30 maintains a counterclockwise rotation relative to the housing 10 and tends to move outward and backward. Specifically, the door 30 opens from G4 to G... max Throughout the process, the door 30 moves outward and backward a certain distance relative to the housing 10. During the opening process described above, the door 30 moves backward, effectively making up for the distance the door 30 moved forward in the early stage, and avoiding excessive forward movement caused by the rotation of the door 30, which would cause the door 30 to separate significantly from the housing 10, thereby ensuring the stability of the door 30 in this state.

[0159] In summary, the movement trend of door 30 during the opening process has the following characteristics:

[0160] (1) During the process of opening the door 30 from the closed state to G4, the door 30 moves outward and forward a certain distance relative to the box 10; combined with Figures 24-26 When door 30 is opened, the opened door 30 causes its side sealing strip 3 to move outward, and the moving side sealing strip 3 quickly separates from the side sealing strip on the other door 30 (see...). Figure 25 and Figure 26 The change in the area within the dashed box effectively prevents the other door 30 from opening due to its movement. That is, this stage can prevent the other door 30 from opening when one of the two oppositely arranged doors 30 is opened, effectively reducing cold loss; at the same time, it can effectively reduce the obstruction of the loading and unloading opening by the door 30; and it can also effectively prevent interference between the door 30 and the cabinet 10 during the opening process.

[0161] (2) Door 30 is opened from G4 to G max During the process, the door 30 moves outward and backward relative to the box 10 by a certain distance; this stage effectively makes up for the distance that the door 30 moved forward in the early stage, and avoids excessive forward movement caused by the rotation of the door 30, which would cause the door 30 to separate significantly from the box 10, thereby ensuring the stability of the door 30 in this state; at the same time, it can effectively reduce the obstruction of the loading and unloading opening by the door 30.

[0162] (3) The door 30 is opened from the closed state to the maximum angle G. max During the process, the door 30 always tends to move outward, which can effectively reduce the obstruction of the door 30 to the access opening, so that the drawer housed in the storage room can make full use of the width of the storage room, increase the width of the drawer, increase the space utilization of the drawer, and ensure that it can be pulled out from the storage room.

[0163] In summary, the above-mentioned trajectory features prevent one of the two oppositely positioned doors 30 from being opened, thus avoiding the other door 30 from being opened as well, effectively reducing cold loss. On the other hand, it also prevents the door 30 from blocking the access opening when it is opened to its maximum angle, making it easier to increase the width of the drawer.

[0164] In summary, combining Figures 15-23 With the positioning groove 6 and the guide groove 7 as references, the axis segment IP always rotates clockwise and moves relative to the second trajectory line K towards the second guide endpoint K2. Specifically, the direction of movement of the axis segment IP relative to the second trajectory line K is I0P0→I1P1→I2P2→I3P3→I4P4→I5P5→I6P6. In this application, the trend of movement of the axis segment IP relative to the second trajectory line K is consistent, and its movement is continuous without sudden acceleration changes. When the door 30 is opened, it is subjected to good force, which is more stable and smoother.

[0165] In some embodiments of this application, such as Figures 27-33 As shown, with the housing 10 (hinge shaft 4 and guide block 5) as a reference, the door 30 (positioning groove 6 and guide groove 7) rotates open relative to the housing 10, corresponding to the door 30 opening to 0°, G1, G2, G3, G4, G5, G... max The first side edge W is positioned relative to the guide block 5 at positions W0, W1, W2, W3, W4, W5, and W6 respectively; that is, when the door 30 is rotated open to G... max During the process, the trajectory of the first side edge W is the curve where W0, W1, W2, W3, W4, W5, and W6 are located simultaneously. It can be concluded that during the entire process of the door 30 first rotating and moving outward and forward, and then rotating and moving outward and backward, the first side edge W first moves outward a certain distance, and then maintains the outward trend; and when the door 30 rotates to G3, it moves outward to its maximum position. In this embodiment, G3 ∈ [48°, 52°], so when the door 30 rotates to an opening angle of around 50°, the first side edge W moves outward to its maximum point.

[0166] Assuming that the door body 30 rotates around a fixed axis (guide center axis I), and the door body 30 is opened to 0°, G1, G2, G3, G4, G5, G max At that time, the first side edge W is located at W`0, W`1, W`2, W`3, W`4, W`5, and W`6 respectively relative to the guide block 5.

[0167] Comparing the configuration of this application with the method of rotating the door 30 around a fixed axis (guide center axis I), it can be seen that: W1 is located on the outward and forward side of W`1, W2 is located on the outward and forward side of W`2, W3 is located on the outward and forward side of W`3, W4 is located outside of W`4, W5 is located on the outward and backward side of W`5, and W6 is located on the outward and backward side of W`6; in summary, compared with the method of rotating the door 30 around a fixed axis (guide center axis I), the door 30 in this embodiment opens from the closed state to G max Throughout the entire process, the first side edge W always moved outward a certain distance.

[0168] In this embodiment, the door 30 is opened to an opening angle of φ < G. max At the same time, the door 30 rotates while moving outward. That is, the relative positions of the guide block 5 and the guide groove 7, and the hinge shaft 4 and the positioning groove 6, are such that in this embodiment φ < G. max During the initial opening process, the door 30 rotates and moves outward during the initial opening phase, thus preventing the opening of one of the two opposing door 30s from causing the other door 30 to open as well. Therefore, when the door 30 is closed, the guide block 5 and hinge shaft 4 are not limited to their positions at I0 and P0 as in this application; they can be positioned sequentially at I1 and P1, I2 and P2, I3 and P3, and so on. That is, in this embodiment, the door 30 opens to an angle φ < G. max The position of the axis radius IA of the guide block 5 relative to the door body 30 can be set to the position of the axis radius IA of the guide block 5 relative to the door body 30 in the initial state when the door body 30 is closed.

[0169] In this embodiment, the door 30 is opened from the closed state to the maximum angle G. max Throughout the process of >90°, the position of the hinge shaft 4 in the positioning groove 6 and the position of the guide block 5 in the guide groove 7 are constantly changing and moving in one direction. There is no sudden change in force, and the movement is smoother.

[0170] In some embodiments of this application, such as Figures 27-33 As shown, assuming the door 30 rotates around a fixed axis (guide center axis I), and the door 30 is opened to 0°, G1, G2, G3, G4, G5, G max At that time, the side sealing edge H is located at H`0, H`1, H`2, H`3, H`4, H`5, and H`6 respectively relative to the guide block 5.

[0171] Comparing the configuration of this application with the method of rotating the door 30 around a fixed axis (guide center axis I), it can be seen that: H1 is located on the outward and forward side of H`1, H2 is located on the outward and forward side of H`2, H3 is located on the outward and forward side of H`3, H4 is located outside of H`4, H5 is located on the outward and backward side of H`5, and H6 is located on the outward and backward side of H`6. In summary, compared with the method of rotating the door 30 around a fixed axis (guide center axis I), the door 30 in this embodiment opens from the closed state to G... max Throughout the process, the side sealing edge H always moves outward by a certain distance; this greatly increases the distance that the side sealing edge H moves outward, effectively reducing the lateral obstruction of the door body 30 to the pick-up and put-out openings.

[0172] This embodiment further defines a second reference plane M2. See also... Figure 11 As shown, the second reference plane M2 is the plane where the access opening of the storage room is located. The second reference plane M2 does not move during the opening of the door 30 relative to the box 10, and is a reference plane that remains stationary relative to the box 10.

[0173] During the process of opening the door 30 from the closed state to G5, the side sealing edge H always moves away from the second reference plane M2 and the reference plane M0;

[0174] Door 30 is opened from G5 to its maximum angle G. max During the process, the side sealing edge H moves away from the second reference plane M2 and closer to the reference plane M0;

[0175] That is, when the door 30 is opened to G5, the distance between the side sealing edge H and the second reference plane M2 is the largest; in this embodiment, G5=103°.

[0176] As one feasible approach, during the opening of the door 30 from the closed state to G5, the movement trajectory of the side sealing edge H is an arc; that is, during the opening of the door 30, the side sealing edge H moves in an arc. Here, "arc" includes a mathematically defined standard arc, as well as an arc with a small deviation from the standard arc. As an adjustable feature, this small deviation is limited to within 1mm. The hinge with the above trajectory characteristics and the track-changing mechanism of the door 20 make the opening of the door 30 smoother.

[0177] In some embodiments of this application, combined with Figure 15 As shown, the door body rotates 30 degrees to open from the closed state to the maximum angle G. max During the process, the relative positional relationship between the centroid plane F and the guide center axis I and the positioning center axis P changes continuously; this will be explained below.

[0178] Within the projection of the top wall of the housing 10, the distance between the guide center axis I and the centroid plane F is denoted as the offset distance J. During the process of the door opening from the closed state to G', in the projection of the plane containing the top wall of the housing, the guide center axis I is located on the side of the centroid plane F closer to the front wall of the door. During this opening process, as the opening angle of the door increases, the offset distance gradually decreases, and when the door is opened to G', the offset distance J is 0.

[0179] The door opens from G' to G max During the process, in the projection of the plane where the top wall of the box is located, the guide center axis I is located on the side of the centroid plane F away from the front wall of the door; during this opening process, as the opening angle of the door increases, the offset distance gradually increases.

[0180] From another perspective, when the guide center axis I is located on the side of the centroid plane F closer to the front wall 31, the offset distance J is a positive number; correspondingly, when the guide center axis I is located on the side of the centroid plane F away from the front wall 31, the offset distance J is a negative number; when the guide center axis I is located on the centroid plane F, the offset distance J is 0.

[0181] During the process of the door 30 opening from the closed state to G', the offset distance J between the guide center axis I and the centroid plane F decreases. When the door opens to G', the offset distance J is 0; G' is set to 22°.

[0182] Door 30 opens from G' to G max During the process, the offset distance J is negative, and as the opening angle increases, the offset distance J tends to decrease.

[0183] As in some embodiments of this application, the door 30 is opened to G0, G1, G', G2, G3, G4, G5, G max When the offset distances are recorded as J0, J1, J`, J2, J3, J4, J5, J6, respectively; J0>J1>J`=0>J2>J3>J4>J5>J6.

[0184] In the above embodiment, the door 30 is opened from the closed state to G. max During the process, the offset distance J (when positive or negative depending on position, it is the absolute value of J) is any value between 0 and 7 mm. In this embodiment, the distance between the centroid plane F of the door body 30 and the guide center axis is effectively limited, so that the centroid plane F is always near the guide center axis I, effectively enhancing the stability of the door body 30 throughout the opening process.

[0185] When the door 30 is closed, the centroid plane F is located between the guide center axis I and the positioning center axis P, further ensuring the stability of the door 30 in the closed state.

[0186] In some embodiments of this application, when the door is opened at 90°, the refrigerator door is flush with the side of the refrigerator body.

[0187] Furthermore, it prevents the door from extending too far beyond the side wall of the cabinet at 90° and conceals any bulging caused by foaming.

[0188] As an feasible approach, combining Figure 8 and Figure 12 As shown, when the door 30 is closed, the positioning center axis P is located at the starting positioning point P0 of the first trajectory line S; the distance between the starting positioning point P0 and the reference plane M0 is L1. The front wall 31 of the door is parallel to the plane where the pick-up and drop-off opening is located;

[0189] When the door 30 is opened to 90°, the front wall 31 of the door is parallel to the side wall of the first body; the positioning center axis P is located at the fourth positioning point P4 of the first trajectory line S; the distance between the fourth positioning point P4 and the front wall 31 of the door is L2.

[0190] When L1=L2, 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 equal is specifically defined as the difference between L1 and L2 being any value between -2mm and 2mm.

[0191] When L1 < L2, when the door 30 is opened to 90°, the front wall 31 of the door protrudes beyond the outer side of the first body side wall of the cabinet 10. As another feasible method, L1 < L2, 0 ≤ L2 - L1 ≤ 4cm, to cover the bulges on the cabinet 10 caused by foaming, effectively concealing the flaws and improving the aesthetics of the refrigerator.

[0192] It should be noted that, in this application example, "parallel" is specifically defined as two planes with an included angle of 0° to 3°. That is, two planes with an included angle of 0° to 3° are defined as parallel. "Aligned" is specifically defined as any value where the maximum distance between two planes is less than 2mm. "Perpendicular" is specifically defined as two planes with an included angle of 88° to 90°. This definition applies to the entire application.

[0193] Figure 34 This is a schematic diagram of one structure of the hinge in this application; such as Figures 4-7 and Figure 34 As shown, in some embodiments of this application, the hinge is integrally formed by die casting. Taking the hinge located at the lower end of the door as an example, the hinge plate 40, guide block 5, and hinge shaft 4 are integrally formed by die casting, which effectively increases the connection strength and integrity of the hinge plate 40, guide block 5, and hinge shaft 4.

[0194] It should be noted that the hinge is integrally formed by die casting and is applicable to hinges located at the lower end of the door body 30, as well as hinges located at the upper end of the door body 30.

[0195] Figures 35-38 This is a schematic diagram of another hinge structure in this application; as shown. Figures 35-38 As shown, in some embodiments of this application, the hinge plate 40 and the guide block 5 are separately configured. This embodiment uses a hinge located at the lower end of the door as an example for illustration; it should be noted that the following hinge structure is also applicable to the upper hinge located at the upper end of the door 30.

[0196] Specifically, a hinge shaft 4 and a positioning shaft 60 are formed on the extension 402 of the hinge plate 40. In this embodiment, the hinge shaft 4 is located on the side of the positioning shaft 60 that is close to the housing 10 and away from the side wall of the first body. The guide block 5 is flat and has a first through hole 51 and a second through hole 52; wherein, the first through hole 51 cooperates with the hinge shaft 4, and the second through hole 52 cooperates with the positioning shaft 60; through the first through hole 51 and the second through hole 52, the guide block 5 is mounted on the extension 402 of the hinge plate 40. The hinge axis 4 and positioning axis 60 are configured to cooperate with the guide block 5, facilitating the installation of the guide block 5 and effectively limiting its movement within the surface of the extension 402 near the door body 30. The positioning groove 6 on the door body 30 cooperates with the hinge axis 4, and the guide groove 7 cooperates with the guide block 5, effectively limiting the movement of the guide block 5 along the central axis of the hinge axis 4. This configuration effectively fixes the guide block 5 and allows it to move relative to the guide groove 7 during the opening of the door body 30. The separate configuration of the hinge plate 40 and guide block 5 facilitates the replacement and maintenance of components.

[0197] In addition, in this embodiment, the guide block 5 can be formed by injection molding or die casting.

[0198] It should be noted that the height of the positioning shaft 60 is not higher than the depth of the second through hole 52 of the guide block 5; in this embodiment, the height of the positioning shaft 60 is equal to the depth of the second through hole 52; that is, the positioning shaft 60 is housed in the second through hole 52 to avoid interference between the positioning shaft 60 and other components, which would affect the movement of the door body 30.

[0199] In one possible configuration, the second through hole 52 is located at the center of the guide block 5; the positioning shaft 60 is installed inside the second through hole 52, passing through the center of the guide block 5. Alternatively, the center of the second through hole 52 may coincide with the center point of the guide block 5. That is, the guide center axis I of the guide block 5 coincides with the center axis of the positioning shaft 60, effectively limiting the movement of the hinge plate 40 and the guide block 5 within the surface of the extension 402 near the door body 30, reducing wobbling and improving the stability of the door body 30 when opening.

[0200] Figures 39-40 This is a schematic diagram of another hinge structure in this application; as shown. Figures 39-40As shown, in some embodiments of this application, the hinge plate 40 and the guide block 5 are separately configured. This embodiment uses a hinge located at the lower end of the door as an example for illustration; it should be noted that the following hinge structure is also applicable to the upper hinge located at the upper end of the door 30.

[0201] Specifically, a first positioning hole 53 and a second positioning hole 54 are formed on the extension 402 of the hinge plate 40. In this embodiment, the first positioning hole 53 is located on the side of the second positioning hole 54 that is close to the housing 10 and away from the side wall of the first body. The guide block 5 is flat and has a hinge shaft 4 and a positioning shaft 60; wherein, the hinge shaft 4 includes a first shaft segment located on the side of the guide block 5 that is close to the extension 402 and a second shaft segment located on the side away from the extension 402; wherein, the positioning shaft 60 is located on the same side of the guide block 5 as the first shaft segment; the first shaft segment of the hinge shaft 4 cooperates with the first positioning hole 53, and the positioning shaft 60 cooperates with the second positioning hole 54; through the first positioning hole 53 and the second positioning hole 54, the guide block 5 is installed on the extension 402 of the hinge plate 40. The above-mentioned positioning holes 53 and 54 are designed to cooperate with the two shafts on the guide block 5, which facilitates the installation of the guide block 5 and effectively limits the movement of the guide block 5 on the surface of the extension 402 near the door body 30; the positioning groove 6 on the door body 30 cooperates with the second shaft section of the hinge shaft 4, and the guide groove 7 cooperates with the guide block 5, which effectively limits the movement of the guide block 5 along the central axis of the hinge shaft 4; the above-mentioned configuration effectively fixes the guide block 5 and allows it to move relative to the guide groove 7 during the opening of the door body 30.

[0202] In addition, in this embodiment, the guide block 5 can be formed by injection molding or die casting.

[0203] As an optional configuration, the height of the positioning shaft 60 is not higher than the depth of the second through hole 52 of the guide block 5; in this embodiment, the height of the second positioning hole 54 is equal to the depth of the second through hole 52; that is, the second positioning hole 54 is housed within the second through hole 52 to avoid interference between the second positioning hole 54 and other components, which would affect the movement of the door body 30.

[0204] Alternatively, the positioning shaft 60 and the hinge shaft 4 can be located on opposite sides of the guide center shaft I to increase the stability of the hinge and the guide block 5 and reduce the relative movement between the extension 402 and the guide block 5. Alternatively, within the cross-section of the guide block 5, the central axis of the positioning shaft 60, the central axis of the hinge shaft 4, and the guide center shaft I can be aligned on the same straight line; that is, within the cross-section of the guide block 5, the central axis of the positioning shaft 60 and the central axis of the hinge shaft 4 lie on the same diameter of the cross-section of the guide block 5. This increases the connection strength to the guide block 5, reduces the wobble of the guide block 5, and balances the force distribution.

[0205] Figure 41 This is a schematic diagram of another hinge structure in this application; see reference. Figure 41 In some embodiments of this application, the hinge plate 40 and the guide block 5 are separately configured. This embodiment uses a hinge located at the lower end of the door as an example for explanation; it should be noted that the following hinge structure also applies to the upper hinge located at the upper end of the door 30; specifically, the connecting portion 401 of the hinge located at the lower end of the door 30 is connected to the front end face of the housing 10. A recess 55 is formed on the extension 402 of the hinge plate 40, and the projection of the recess 55 on the hinge plate 40 is circular; a hinge shaft 4 is formed on the side of the recess 55 near the housing 10, and the hinge shaft 4 is integrally formed with the extension 402 and the connecting portion 401; the guide block 5 is flat, and has a first through hole 51 that mates with the hinge shaft 4; through the first through hole 51 and the recess 55, the guide block 5 is installed on the extension 402 of the hinge plate 40. The outer peripheral wall of the guide block 5 contacts and engages with the inner peripheral wall of the recess 55. Constrained by the recess 55, the guide block 5 experiences uniform circumferential force, increasing the stability of the engagement between the guide block 5 and the hinge plate 40. The hinge shaft 4 and recess 55 are designed to facilitate the engagement of the hinge and guide block 5, simplifying installation and effectively limiting the movement of the guide block 5 within the surface of the extension 402 near the door body 30. The positioning groove 6 on the door body 30 engages with the hinge shaft 4, and the guide groove 7 engages with the guide block 5, effectively limiting the movement of the guide block 5 along the central axis of the hinge shaft 4. This design effectively fixes the guide block 5 and allows it to move relative to the guide groove 7 during door opening. The separate design of the hinge plate 40 and guide block 5 facilitates replacement and maintenance of components.

[0206] In addition, in this embodiment, the guide block 5 can be formed by injection molding or die casting.

[0207] It should be noted that, in the direction perpendicular to the hinge plate 40, the thickness of the guide block 5 is greater than the depth of the recess 55, so as to ensure that the guide block 5 is at least partially located outside the recess 55, so as to achieve its engagement with the guide groove 7.

[0208] Figures 42 to 52 This is a schematic diagram of a structure for locking the door and the box in this application; see reference. Figures 42 to 52 In some embodiments of this application, the positioning groove 6 and the guide groove 7 are formed on the door body 30, and a locking block is fixed on the door body 30. The locking block is installed on the door body 30 at a position adjacent to the guide groove 7. 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 locking block 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 box body 10.

[0209] Specifically, this embodiment uses a locking block located at the lower end of the door body 30 as an example. The door body 30 includes a door end cover 38, which is located at the end of the door body 30 near the hinge. The door end cover 38 has a positioning groove 6 and a guide groove 7 near the hinge. That is, in this embodiment, the positioning groove 6 and the guide groove 7 are integrally formed on the door end cover 38. In this embodiment, the door end cover 38 is an injection molded part, which is integrally formed by injection molding, and the positioning groove 6 and the guide groove 7 are formed on it. As mentioned above, the guide groove 7 is defined by the cooperation of the first guide strip 8 and the second guide strip 9.

[0210] The door end cover 38 is provided with a receiving groove 37 at an adjacent position away from the door side wall 32. The locking block is inserted into the receiving groove 37, and then the locking block is fastened to the door body 30 by screws or the like.

[0211] In this embodiment, the second mating part of the locking block is configured as a locking hook 82. The locking hook 82 extends away from the side wall 32 and bends towards the side close to the rear wall 33 and the side wall 32. The opening of the locking hook 82 faces the side wall 32, and the free end of the locking hook 82 is located near the rear wall 33.

[0212] A stop 41 is provided on the side of the hinge plate 40 away from the first body sidewall. A hook gap 42 is formed on the side of the stop 41 near the cabinet. When the door 30 is closed, the free end of the lock hook 82 is received in the hook gap 42, and the stop 41 is located in the lock hook 82. The lock hook 82 on the door 30 hooks the stop 41 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 41, thereby disengaging from the stop 41.

[0213] The locking hook 82 may include a base portion 83 and a hook portion 84. The base portion 83 is fixedly connected to the receiving groove 37, and the hook portion 84 is connected to the base portion 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 base portion 83 and connects to the door body 30 to strengthen the connection between the base portion 83 and the door body 30, so that only the hook portion 84 deforms when the locking hook 82 is disengaged from the stop portion 41.

[0214] The free ends of both the hook part 84 and the stop part 41 are arc-shaped, which facilitates the hook part 84 to smoothly hook onto or disengage from the stop part 41 along the arc.

[0215] Combination Figures 42 to 52When the door 30 closes from the open state, as the door 30 rotates to close, the free end of the hook 84 gradually approaches the stop 41. When the hook 84 and the stop 41 come into contact, the door 30 continues to close. Under the action of the stop 41, the hook 84 deforms, the stop 41 enters the hook 84, and the free end of the hook 84 enters the hook gap 42; the locking hook 82 locks with the hinge plate 40, thus locking the door 30 and the housing 10. When the door 30 opens from the closed state, the process is the reverse of the closing process, and will not be described further here. When the door 30 closes from the open state to an angle of less than 7°, the door 30 automatically closes under the action of the hook 84 and the stop 41; when the door is opened to 5° to 8°, the hook 84 and the stop 41 separate.

[0216] In some embodiments, a first protrusion 34 and a second protrusion 35 may be provided in the receiving groove 37 on the door body 30, and a gap groove 36 is formed between the first protrusion 34 and the second protrusion 35; the first protrusion 34 is generally located on the side of the second protrusion 35 near the front wall 31 and the side wall 32 of the door. A plug plate 85 is formed at the root joint 83, and the plug plate 85 is inserted into the gap groove 36. In this way, the root joint 83 can be prevented from deforming in the direction from the front wall 31 to the rear wall 33 by the limiting of the first protrusion 34 and the second protrusion 35.

[0217] Specifically, the plug-in plate 85 is configured as an arc-shaped plate; the second protrusion 35 is an arc-shaped plate, and the edge of the first protrusion 34 near the second protrusion 35 is consistent with the shape of the second protrusion 35. The first protrusion 34 and the second protrusion 35 together define an arc-shaped gap groove 36; the arc-shaped plug-in plate 85 cooperates with the arc-shaped gap groove 36. The above arc-shaped configuration increases the limiting area of ​​the gap groove 36 on the root connection part 83, increases the connection strength between the locking block and the door body 30, and effectively limits the deformation of the root connection part 83.

[0218] The locking block can be made of POM material, which has strong abrasion resistance and can improve the service life of the hinge.

[0219] Figures 53 to 55 This is a schematic diagram of a structure for locking the door and the box in this application; see reference. Figures 53 to 55 In some embodiments of this application, the door body 30 includes a door end cover 38, which is disposed at the end of the door body 30 near the hinge. A mounting block is provided on the door end cover 38 at a position opposite to the hinge plate 40, and a positioning groove 6 and a guide groove 7 are formed on the mounting block. In this embodiment, a first mating portion is provided at the end of the hinge away from the side wall of the first body, and the mounting block has a second mating portion. The second mating portion is used to cooperate with the first mating portion to achieve locking and unlocking of the door body 30 and the housing 10.

[0220] Specifically, this embodiment uses the mounting block located at the lower end of the door body 30 as an example for explanation. In this embodiment, the mounting block is integrally formed.

[0221] The mounting block includes a positioning groove 6, which includes a groove bottom 70 and a circumferential groove wall 71. The circumferential groove wall 71 surrounds the edge of the groove bottom 70 and forms a slot 72 opposite to the groove bottom 70. The mounting block includes a plate 81 located at and surrounding the slot 72 of the positioning groove 6. The plate 81 is provided with a first guide strip 8 and a second guide strip 9. The first guide strip 8 is located on the side of the positioning groove 6 away from the door side wall 32, and the second guide strip 9 is located on the side of the positioning groove 6 closer to the door side wall 32. In addition, a receiving groove 37 is provided on the door end cap 38 located at the lower end of the door body 30. The mounting block is inserted into the receiving groove 37, and then the plate 81 is fastened to the door body 30 by screws or the like. As an optional configuration, the plate 81 has a locking interface 86 at one end near the rear wall 33 of the door; the inner wall of the receiving groove 37 has a locking protrusion 371 that mates with the locking interface 86; when the mounting block is inserted into the receiving groove 37, the locking protrusion 371 is installed in the locking interface 86 to limit the relative position of the mounting block and the door 30. In this embodiment, the screw is fixed on the side of the plate 81 away from the door side wall 32, that is, the screw fixing position is located on the side of the locking interface 86 and the locking protrusion 371 that are engaged with each other away from the door side wall 32, which effectively increases the connection firmness between the mounting block and the door 30. In this embodiment, a receiving cavity 39 is formed in the area of ​​the receiving groove 37 near the door side wall 32, the positioning groove 6 is installed in the receiving cavity 39, and its circumferential groove wall 71 mates with the cavity wall of the receiving cavity 39.

[0222] In some embodiments of this application, combined with Figures 53 to 55 The second mating part on the mounting block is configured as a locking hook structure. Specifically, the second mating part 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.

[0223] A stop 41 is provided on the side of the hinge plate 40 away from the first body sidewall. A hook gap 42 is formed on the side of the stop 41 near the cabinet. When the door 30 is closed, the free end of the lock hook 82 is received in the hook gap 42, and the stop 41 is located in the lock hook 82. The lock hook 82 on the door 30 hooks the stop 41 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 41, thereby disengaging from the stop 41.

[0224] 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 41.

[0225] The free ends of both the hook part 84 and the stop part 41 are arc-shaped, which facilitates the hook part 84 to smoothly hook onto or disengage from the stop part 41 along the arc.

[0226] When the door 30 closes from the open state, as the door 30 rotates to close, the free end of the hook 84 gradually approaches the stop 41. When the hook 84 and the stop 41 come into contact, the door 30 continues to close. Under the action of the stop 41, the hook 84 deforms, the stop 41 enters the hook 84, and the free end of the hook 84 enters the hook gap 42. The locking hook 82 locks with the hinge plate 40, thus locking the door 30 to the housing 10. When the door 30 opens from the closed state, the process is the reverse of the closing process and will not be described further. When the door 30 closes from the open state to an angle of less than 7°, the door 30 automatically closes under the action of the hook 84 and the stop 41. When the door is opened to 5° to 8°, the hook 84 and the stop 41 separate.

[0227] In some embodiments, the door body 30 may be provided with a first protrusion 34 and a second protrusion 35, and a gap groove 36 is formed between the first protrusion 34 and the second protrusion 35; the first protrusion 34 is generally located on the side of the second protrusion 35 near the front wall 31 and the side wall 32 of the door. A plug plate 85 is formed at the root joint 83, and the plug plate 85 is inserted into the gap groove 36. In this way, the root joint 83 can be prevented from deforming in the direction from the front wall 31 to the rear wall 33 by the limiting of the first protrusion 34 and the second protrusion 35.

[0228] Specifically, the plug-in plate 85 is configured as an arc-shaped plate; the second protrusion 35 is an arc-shaped plate, and the edge of the first protrusion 34 near the second protrusion 35 is consistent with the shape of the second protrusion 35. The first protrusion 34 and the second protrusion 35 together define an arc-shaped gap groove 36; the arc-shaped plug-in plate 85 cooperates with the arc-shaped gap groove 36. The above arc-shaped configuration increases the limiting area of ​​the gap groove 36 on the root joint 83, increases the connection strength between the mounting block and the door body 30, and effectively limits the deformation of the root joint 83.

[0229] The mounting block located at the upper end of the door body 30 can be configured to have only a positioning groove 6 and a guide groove 7, excluding the locking hook structure. Correspondingly, when the structure of the mounting block is changed, the receiving groove 37 provided on the door body is adapted to accommodate and fix the mounting block.

[0230] The mounting block 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 6, guide groove 7, and locking hook structure are integrally molded to form the mounting block, increasing structural precision and enhancing the block's integrity and strength. Alternatively, the mounting block integrating the positioning groove 6, guide groove 7, and locking hook structure can be integrally molded using injection molding.

[0231] 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 in that, 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 guide block and a hinge shaft fixed to the guide block; 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; A guide groove is provided at the end of the door body near the hinge; the guide block is installed in the guide groove and cooperates with the two opposite groove walls of the guide groove. A positioning groove is provided on the bottom of the guide groove; the positioning groove extends from the end away from the door side wall towards the end closer to the door side wall, and its distance from the front wall of the door first increases and then decreases; the hinge shaft cooperates with the positioning groove; When the door is closed, the hinge shaft is located at the end of the positioning groove away from the door sidewall; during the opening process of the door from the closed state, the guide block always cooperates with the two opposite groove walls of the guide groove and moves relative to the guide groove; the hinge shaft moves relative to the positioning groove towards the door sidewall, so that the door can move a certain distance away from the second sidewall while rotating.

2. The refrigerator according to claim 1, characterized in that: The center trajectory line of the guide groove is denoted as the second trajectory line K, and the second trajectory line K is perpendicular to the front wall of the door.

3. The refrigerator according to claim 2, characterized in that: The hinge axis is located on the side of the guide block closest to the housing.

4. The refrigerator according to claim 3, characterized in that: The central axis of the hinge shaft is denoted as the positioning central axis P, and the central axis of the guide block is denoted as the guide central axis I. In the projection of the top wall of the box, the radius of the circular cross section of the guide block that passes through the positioning central axis P is denoted as the central radius IA, where A is the intersection point on the boundary of the circular cross section of the guide block and the radius of the cross section of the guide block that passes through the positioning central axis P. I, P, and A are on the same straight line and on the radius IA of the circular cross-section of the guide block; The line segment with the guide center axis I and the positioning center axis P as endpoints is denoted as line segment IP, and the line segment with point A and the positioning center axis P as endpoints is denoted as line segment AP; the length of line segment IP is greater than the length of line segment AP.

5. The refrigerator according to claim 4, characterized in that: The plane passing through the guide center axis I and parallel to the side wall of the first body is denoted as the first reference plane M1; in the projection of the top wall of the box, the angle between the axis radius IA and the first reference plane M1 is denoted as the first included angle θ; wherein, the first included angle θ is any value between 25° and 35°.

6. The refrigerator according to claim 5, characterized in that: In the projection of the top wall of the box, the axial radius IA is located on the side of the first reference plane M1 away from the first body sidewall, and on the side of the box that passes through the guide center axis I and is parallel to the front wall of the door when the door is closed.

7. The refrigerator according to any one of claims 1-6, characterized in that: The guide groove includes a first guide bar and a second guide bar arranged in parallel. The first guide bar is located on the side of the second guide bar away from the door sidewall, and the positioning groove is located between the first guide bar and the second guide bar, extending in the direction from the first guide bar to the second guide bar. Both the first guide bar and the second guide bar cooperate with the guide block.

8. The refrigerator according to any one of claims 1-6, characterized in that: The center trajectory line of the positioning groove is denoted as the first trajectory line S. The distance between the end of the first trajectory line S away from the door side wall and the front wall of the door is denoted as D0. The distance between the end of the first trajectory line S close to the door side wall and the front wall of the door is denoted as D1. Wherein, D0≥D1.

9. The refrigerator according to any one of claims 1-6, characterized in that: The door body includes a rear wall disposed opposite to the front wall of the door, and a door seal is provided on the rear wall of the door; wherein, the edge of the door seal that is close to the side wall of the door and far away from the front wall of the door is denoted as the side sealing edge H; The enclosure defines an insulated storage room, which has an access opening that can be closed or opened by the door; the plane containing the access opening is denoted as the second reference plane M2; the plane containing the side wall of the first body is denoted as the reference plane M0; the second reference plane M2 and the reference plane M0 do not move during the opening of the door relative to the enclosure, and are reference planes that remain stationary relative to the enclosure; During the process of the door opening from the closed state to G5, the side sealing edge H always moves away from the second reference plane M2 and the reference plane M0; The door is opened from the fifth angle G5 to the maximum angle G. max During the process, the side sealing edge H moves away from the second reference plane M2 and closer to the reference plane M0; wherein, G max >G5>90°.

10. The refrigerator according to claim 9, characterized in that: During the process of the door opening from the closed state to the fifth angle G5, the movement trajectory of the side sealing edge H is an arc.

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