Refrigerator

Abstract

The application provides a refrigerator, which comprises a cabinet, a door body, and a hinge; the hinge is provided with a positioning groove in a curved shape and increasing in distance from the taking and placing opening in the direction from a first body side wall to a second body side wall, a first hinge shaft, and a second hinge shaft; the door body comprises a door front wall and a door side wall; an end of the door body close to the hinge is provided with a detachable mounting block and a door shaft matched with the positioning groove; a guide groove is formed on the mounting block; the bottom of the door shaft is provided with a fixing block clamped between the door body and the mounting block; during the opening process of the door body from the closed state, the first hinge shaft and the second hinge shaft move relative to the guide groove, and at least one of them is in contact with the guide groove; the door shaft moves relative to the positioning groove, so that the door body can move a distance inward and forward while rotating; the refrigerator makes the door body not exceed or excessively exceed the side surface of the cabinet when being opened, so as to avoid the interference between the door body and the cabinet when the door body is opened, and also avoid the extrusion of the door body on the door seal strip when the door body is opened, so that the opening of the door body is smoother.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a refrigerator. BACKGROUND

[0002] In the related art, the hinge structure of the refrigerator door body is mostly single-axis type, which realizes the rotation of the door body around the hinge shaft through the cooperation of the hinge shaft and the shaft sleeve of the door body. In this case, the corner of the door body will exceed the side of the box during the opening process.

[0003] For the built-in refrigerator, it is generally required that the corner of the door body does not excessively exceed the size of the box during the opening process to 90°, which limits the use of the refrigerator. SUMMARY

[0004] The present application at least partly solves one of the problems in the related art.

[0005] Therefore, the present application aims to provide a refrigerator, the hinge structure of which makes the door body not exceed or excessively exceed the side of the box when opened.

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

[0007] a box body defining a storage space with a taking and placing opening and having a first body side wall and a second body side wall arranged oppositely;

[0008] a hinge arranged on the box body and close to the first body side wall, the hinge being provided with a first hinge shaft, a second hinge shaft, and a positioning groove in a curved shape and gradually increasing in distance from the plane of the taking and placing opening in the direction from the first body side wall to the second body side wall;

[0009] a door body having a door front wall away from the box body when the door body is closed, and a door side wall close to the hinge and connected with the door front wall; the end of the door body close to the hinge is provided with:

[0010] a mounting block integrally formed and detachably connected with the door body, the mounting block being formed with a ring-shaped guide groove and a through hole surrounded by the guide groove;

[0011] a door shaft having a fixing block clamped between the door body and the mounting block, and the door shaft passing through the through hole and cooperating with the positioning groove;

[0012] during the opening of the door body from the closed state to the maximum angle G max , the first hinge shaft and the second hinge shaft move relative to the guide groove, and at least one of them is in contact with the guide groove; the door shaft moves relative to the positioning groove, so that the door body can move a distance inward and forward while rotating.

[0013] In one embodiment of this application, the guide groove includes a groove bottom and a circumferential groove wall surrounding the groove bottom; a plate is provided around the circumferential groove wall surrounding the guide groove;

[0014] The door body has a mounting groove formed at the end near the hinge, and a receiving cavity is formed on the bottom wall of the mounting groove; the plate body cooperates with the bottom wall of the mounting groove, and the guide groove is at least partially received in the receiving cavity.

[0015] In one embodiment of this application, the bottom of the door hinge is provided with a fixing block that is clamped between the door body and the mounting block; a recess is formed on the bottom wall of the receiving cavity to cooperate with the fixing block, and the inner sidewall of the recess cooperates with the outer peripheral wall of the fixing block.

[0016] In one embodiment of this application, the axis passing through the centroid of the cross section of the first hinge axis is denoted as the first centroidal axis P0; the axis passing through the centroid of the cross section of the second hinge axis is denoted as the second centroidal axis Q0.

[0017] Within the projection of the top wall of the box, the straight line containing the first centroidal axis P0 and the second centroidal axis Q0 is denoted as the first straight line Q0P0; wherein, the first straight line Q0P0 is parallel to the plane containing the pick-up and drop-off port.

[0018] In one embodiment of this application, the center trajectory line of the positioning groove is denoted as the positioning trajectory line S, which includes a starting positioning point I0 near the door sidewall and an ending positioning point I0 away from the door sidewall. e ; Starting positioning point I0 and ending positioning point I e The line containing this line is denoted as the second line I0I. e The positioning trajectory line S is located on the second straight line I0I. e The side closest to the pick-and-place port.

[0019] In one embodiment of this application, the first hinge shaft is located on the side of the positioning groove closer to the side wall of the first body; the second hinge shaft is located on the side of the positioning groove away from the side wall of the first body; both the first hinge shaft and the second hinge shaft are cylindrical shafts.

[0020] In one embodiment of this application, the inner wall of the guide groove defines a guide trajectory line K, and the centroid of the guide trajectory line K is denoted as the guide centroid O.

[0021] The guide trajectory line K includes a first guide segment K1, a second guide segment K2, a third guide segment K3, a fourth guide segment K4, and a fifth guide segment K5 that are connected end to end and all protrude toward the side away from the guide centroid O.

[0022] The connecting point of the fifth guiding section K5 and the first guiding section K1 is recorded as a first inflection point A, and the connecting points of the first guiding section K1, the second guiding section K2, the third guiding section K3, the fourth guiding section K4 and the fifth guiding section K5 are recorded as a second inflection point B, a third inflection point C, a fourth inflection point D and a fifth inflection point E in sequence.

[0023] The second inflection point B, the first inflection point A, the fifth inflection point E, the third inflection point C and the fourth inflection point D are away from the door side wall in sequence.

[0024] The fifth inflection point E, the first inflection point A, the fourth inflection point D, the second inflection point B and the third inflection point C are close to the door front wall in sequence.

[0025] As an embodiment of the present application, when the door body is closed, the first hinge shaft cooperates with the first inflection point A, and the second hinge shaft cooperates with the fourth guiding section K4.

[0026] As an embodiment of the present application, the door front wall and the door side wall form a first side edge W, a plane where the taking and placing opening is located is recorded as a second reference plane M2, and when the door body is closed, a side of the first side edge W away from the taking and placing opening is provided with a first reference plane M1 perpendicular to the second reference plane M2, and the first reference plane M1 and the second reference plane M2 remain stationary relative to the cabinet during the opening process of the door body relative to the cabinet.

[0027] During the opening process of the door body, the first side edge W is located on a side of the first reference plane M1 close to the first body side wall.

[0028] During the process that the door body is opened relative to the cabinet from the first angle G1 to the third angle G3, the distance change amount of the first side edge W and the first reference plane M1 per unit angle of the door body is recorded as ξ1.

[0029] During the process that the door body is opened relative to the cabinet from the third angle G3 to the maximum angle G max , the distance change amount of the first side edge W and the first reference plane M1 per unit angle of the door body is recorded as ξ2. max G3>G1, and ξ1 and ξ2 are positive numbers; wherein, ξ1<ξ2.

[0030] As an embodiment of the present application, during the process that the door body is opened from the closed state to the second angle G2, the distance of the door body per unit angle of the door body moving inward is recorded as δ1.

[0031] During the process that the door body is opened from the second angle G2 to the third angle G3, the distance of the door body per unit angle of the door body moving inward is recorded as δ2; wherein, G3>G2>0°, and δ1>δ2.

[0032] Compared with the prior art, the refrigerator has the advantages and positive effects that:

[0033] The refrigerator comprises a cabinet, a door body, a hinge arranged on the cabinet, a positioning groove in a curved shape and gradually increasing in distance from a plane of a taking and placing opening in a direction from a first body side wall to a second body side wall, a first hinge shaft and a second hinge shaft, the door body comprises a door front wall and a door side wall, an integrally-formed and detachable mounting block and a door shaft are arranged at an end of the door body close to the hinge, a ring-shaped guide groove and a through hole surrounded by the guide groove are formed on the mounting block, a fixing block clamped between the door body and the mounting block is arranged at a bottom of the door shaft, and the door shaft passes through the through hole and is matched with the positioning groove, in a process of opening the door body from a closed state, the first hinge shaft and the second hinge shaft move relative to the guide groove, and at least one of the first hinge shaft and the second hinge shaft is in contact with the guide groove, the door shaft moves relative to the positioning groove, so that the door body can rotate and move a distance in a direction close to the second body side wall and forward, the refrigerator can prevent the door body from exceeding or excessively exceeding a side surface of the cabinet when the door body is opened, interference between the door body and a cabinet when the door body is opened is avoided, the door seal is prevented from being squeezed when the door body is opened, wear of the door seal is effectively reduced, and the door body is more smooth when opened. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0035] Figure 1 is a perspective view of the refrigerator of the present application;

[0036] Figure 2 is a top view of the refrigerator of the present application;

[0037] Figure 3 is a partial structure schematic view of Figure 2 ;

[0038] Figure 4 is a structure schematic view of the hinge of the refrigerator of the present application;

[0039] Figure 5 is an exploded structure schematic view of the hinge and the door body at the upper right corner of the refrigerator of the present application;

[0040] Figure 6 is an exploded structure schematic view of the hinge and the door body at the upper right corner of the refrigerator of the present application from another perspective;

[0041] Figure 7is a structure diagram of the hinge when the door body of the refrigerator of the present application is opened and in a closed state;

[0042] Figure 8 is a structure diagram of the hinge when the door body of the refrigerator of the present application is opened to φ=G1;

[0043] Figure 9 is a structure diagram of the hinge when the door body of the refrigerator of the present application is opened to φ=G2;

[0044] Figure 10 is a structure diagram of the hinge when the door body of the refrigerator of the present application is opened to φ=G3;

[0045] Figure 11 is a structure diagram of the hinge when the door body of the refrigerator of the present application is opened to φ=G4;

[0046] Figure 12 is a structure diagram of the hinge when the door body of the refrigerator of the present application is opened to φ=G max ;

[0047] Figure 13 is a movement trajectory diagram of the first side edge and the second side edge when the door body of the refrigerator of the present application is opened from a closed state to φ=G max ;

[0048] Figure 14 is a movement diagram of the guide groove relative to the first hinge shaft and the second hinge shaft, and the door shaft relative to the positioning groove when the door body of the refrigerator of the present application is opened to φ=G1;

[0049] Figure 15 is a movement diagram of the guide groove relative to the first hinge shaft and the second hinge shaft, and the door shaft relative to the positioning groove when the door body of the refrigerator of the present application is opened to φ=G2;

[0050] Figure 16 is a movement diagram of the guide groove relative to the first hinge shaft and the second hinge shaft, and the door shaft relative to the positioning groove when the door body of the refrigerator of the present application is opened to φ=G3;

[0051] Figure 17 is a movement diagram of the guide groove relative to the first hinge shaft and the second hinge shaft, and the door shaft relative to the positioning groove when the door body of the refrigerator of the present application is opened to φ=G4;

[0052] Figure 18 is a movement diagram of the guide groove relative to the first hinge shaft and the second hinge shaft, and the door shaft relative to the positioning groove when the door body of the refrigerator of the present application is opened to φ=G max ;

[0053] Figure 19 is a movement diagram of the guide groove relative to the first hinge shaft and the second hinge shaft, and the door shaft relative to the positioning groove when the door body of the refrigerator of the present application is opened to φ=G maxFig. 6 is a schematic view of the movement of the guide groove relative to the first hinge shaft and the second hinge shaft, and the movement of the door shaft relative to the positioning groove;

[0054] Figure 20 Fig. 7 is a schematic view of the relative position of the hinge plate and the locking structure when the door body of the refrigerator is closed; max Fig. 6 is a schematic view of the movement of the guide groove relative to the first hinge shaft and the second hinge shaft, and the movement of the door shaft relative to the positioning groove;

[0055] Figure 21 Fig. 8 is a schematic view of the disassembled structure of the door end cover and the mounting block at the upper end of the door body of the refrigerator;

[0056] Figure 22 Fig. 9 is a schematic view of the assembled structure of the door end cover and the mounting block at the upper end of the door body of the refrigerator;

[0057] Figure 23 Fig. 10 is a schematic view of the disassembled structure of the door end cover and the mounting block at the lower end of the door body of the refrigerator;

[0058] Figure 24 Fig. 11 is a schematic view of the assembled structure of the door end cover and the mounting block at the lower end of the door body of the refrigerator;

[0059] Figure 25 Fig. 12 is a schematic view of the relative position of the hinge plate and the locking structure when the door body of the refrigerator is closed;

[0060] Figure 26 Fig. 13 is a schematic view of the relative position of the hinge plate and the locking structure when the door body of the refrigerator is opened to G1;

[0061] Figure 27 Fig. 14 is a schematic view of the relative position of the hinge plate and the locking structure when the door body of the refrigerator is opened to 90°.

[0062] In the above figures: cabinet 10; cabinet 100; door body 30; door front wall 31; door side wall 32; door rear wall 33; first side edge W; second side edge N; hinge plate 40; connecting part 401; extension part 402; stop part 403; hooking gap 404; mounting groove 34; accommodating cavity 35; first protrusion 36; gap groove 37; door end cover 38; recess 39; mounting block 80; plate body 81; locking hook 82; root connecting part 83; hooking part 84; limiting part 85; embedding part 86; limiting strip 87; reference plane M0; first reference plane M1; second reference plane M2; positioning groove 5; first hinge shaft 41; second hinge shaft 42; first centroid axis P0; second centroid axis Q0; guide groove 6; door shaft 7; positioning center axis I; fixing block 70; groove bottom 60; circumferential groove wall 61; slot 63; through hole 64; positioning track line S; starting positioning point I0; first positioning point I1; second positioning point I2; third positioning point I3; fourth positioning point I4; fifth positioning point I5; terminal positioning point I6; door front wall 31; door side wall 32; door rear wall 33; first side edge W; second side edge N; hinge plate 40; connecting part 401; extension part 402; stop part 403; hooking gap 404; mounting groove 34; accommodating cavity 35; first protrusion 36; gap groove 37; door end cover 38; recess 39; mounting block 80; plate body 81; locking hook 82; root connecting part 83; hooking part 84; limiting part 85; embedding part 86; limiting strip 87; reference plane M0; first reference plane M1; second reference plane M2; positioning groove 5; first hinge shaft 41; second hinge shaft 42; first centroid axis P0; second centroid axis Q0; guide groove 6; door shaft 7; positioning center axis I; fixing block 70; groove bottom 60; circumferential groove wall 61; slot 63; through hole 64; positioning track line S; starting positioning point I0; first positioning point I1; second positioning point I2; third positioning point I3; fourth positioning point I4; fifth positioning point I5; terminal positioning point I6; e; guide trajectory K; first guide segment K1; second guide segment K2; third guide segment K3; fourth guide segment K4; fifth guide segment K5; first inflection point A; second inflection point B; third inflection point C; fourth inflection point D; fifth inflection point E. DETAILED DESCRIPTION

[0063] Hereinafter, the present application will be described in detail through exemplary embodiments. It should be understood, however, that the elements, structures and features of one embodiment can be beneficially incorporated into other embodiments without further recitation.

[0064] In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and therefore cannot be construed as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application.

[0065] The terms "first", "second", "third", "fourth", "fifth" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth" can explicitly or implicitly include one or more of the features.

[0066] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0067] Hereinafter, the embodiments of the present application will be described in detail with reference to the accompanying drawings. In the drawings, the side of the refrigerator facing the user during use is defined as the front side, and the side opposite to it is defined as the rear side.

[0068] Reference Figure 1The refrigerator includes a cabinet 10 having a storage compartment, a door body 30 connected to the cabinet 10 to open and close the storage compartment, and a refrigerating device to supply cold air to the storage compartment. The cabinet 10 includes an inner container defining the storage compartment, an outer shell connected to the outer side of the inner container to form the appearance of the refrigerator, and a thermal insulation layer provided between the inner container and the outer shell to thermally insulate the storage compartment. The cabinet 10 defines a plurality of storage compartments. In the present embodiment, the plurality of storage compartments include a refrigerating compartment and a freezing compartment located below the refrigerating compartment; it should be noted that the arrangement of the plurality of storage compartments of the refrigerator is not limited to the above example.

[0069] The front end of the storage compartment is formed with a taking and placing opening to place food into the storage compartment or take food out of the storage compartment; the cabinet 10 is provided with a rotatable door body 30 to open or close the taking and placing opening of the storage compartment. Specifically, the door body 30 has an upper hinge and a lower hinge rotatably connected to the cabinet 10.

[0070] The cabinet 10 includes oppositely arranged first and second body side walls (i.e. left and right side walls of the cabinet 10); the hinge is arranged on the cabinet 10 and close to the first body side wall; the door body 30 has a door front wall 31 away from the cabinet 10 when the door body 30 is closed, a door rear wall 33 oppositely arranged with the door front wall 31, a door side wall 32 close to the hinge and connected with the door front wall 31; for example, the hinge is located on the right side of the cabinet 10, the right side of the door body 30 is the door side wall 32; when the hinge is located on the left side of the cabinet 10, the left side of the door body 30 is the door side wall 32.

[0071] The intersection of the door front wall 31 and the door side wall 32 of the door body 30 forms a first side edge W, and the intersection of the door side wall 32 and the door rear wall 33 forms a second side edge N; when the door body 30 is closed, the first side edge W is located on the side away from the cabinet 10 of the second side edge N. It should be noted that when the door front wall 31 and the door side wall 32 are both flat, the intersection line of the two planes is the theoretical first side edge W; in specific processing and arrangement, based on the arrangement of the round corner transition at the intersection of the door front wall 31 and the door side wall 32, a curved surface is formed, and an arbitrary vertical line on the curved surface extending in the length direction of the door body 30 can represent the first side edge W. Similarly, due to the round corner transition arrangement of the door front wall 31 and the door side wall 32, the intersection line of the planes where the door front wall 31 and the door side wall 32 are located or the vertical line close to and parallel to the intersection line can also represent the movement of the first side edge W. In addition, in the present embodiment, a plane passing through the center of mass of the door body 30 and parallel to the door front wall 31 is referred to as the center of mass plane F; during the opening process of the door body 30, the center of mass plane F moves with the door body 30.

[0072] Referring to Figures 2 to 6 The hinge has a first hinge shaft 41, a second hinge shaft 42 located on the side of the first hinge shaft 41 away from the first body side wall, and a positioning groove 5 located between the first hinge shaft 41 and the second hinge shaft 42.

[0073] The door body 30 is provided with a guide slot 6 near the end of the hinge, and a door shaft 7 is arranged on the bottom 60 of the guide slot 6. The first hinge shaft 41 and the second hinge shaft 42 are adapted to the guide slot 6, and the door shaft 7 is adapted to the positioning slot 5. During the opening or closing of the door body 30, the door shaft 7 moves relative to the positioning slot 5, and the guide slot 6 moves relative to the first hinge shaft 41 and the second hinge shaft 42 (it should be noted that the positioning slot 5, the first hinge shaft 41 and the second hinge shaft 42 are fixed to the hinge shaft, that is, the movement of the guide slot 6 relative to the first hinge shaft 41 can also be represented as the movement of the guide slot 6 relative to the positioning slot 5). As a settable mode, during the opening of the door body 30, at least one of the first hinge shaft 41 and the second hinge shaft 42 is in contact with the wall of the guide slot 6 and moves relative to the guide slot 6.

[0074] As a settable mode, when the door body 30 is closed, in the projection of the top wall of the cabinet 10, the first hinge shaft 41, the second hinge shaft 42 and the positioning slot 5 are all located in the bottom area of the guide slot 6, the first hinge shaft 41 is located on the side of the positioning slot 5 close to the first body side wall, and the second hinge shaft 42 is located on the side of the positioning slot 5 away from the first body side wall. As an implementable mode, when the door body 30 is closed, relative to the door front wall 31, the positioning slot 5 is close to the door rear wall 33 (the taking and placing opening). The above setting makes the positioning slot guide the corner position of the door body 30 close to the door rear wall 33 and the door side wall 32, so as to effectively balance the external force applied to the corner of the door front wall 31 away from the door side wall 32 for driving the door body 30 to open, thereby reducing the shaking of the door body 30 and increasing the stability of the opening of the door body 30.

[0075] The hinge includes a hinge plate 40 fixedly connected to the cabinet 10, and the hinge plate 40 includes a connecting portion 401 connected to the cabinet 10 and an extension portion 402 extending forward from the connecting portion 401 and having a horizontal plate shape. The connecting portion 401 can be fastened to the top wall of the cabinet 10 by fasteners such as screws, pins and bolts.

[0076] Specifically, for the hinge at the upper end of the door body 30, the hinge plate 40 is connected to the upper end of the cabinet 10, and the first hinge shaft 41 and the second hinge shaft 42 are connected to the hinge plate 40 to form a defined shaft for guiding the movement of the door body 30. The hinge plate 40, the first hinge shaft 41 and the second hinge shaft 42 can be integrally formed, or can be separately provided and assembled with each other. Among them, the first hinge shaft 41 and the second hinge shaft 42 are formed on the extension portion 402 and extend to the side close to the door body 30. The positions of the two first hinge shafts 41 on the hinges at the upper and lower ends of the door body 30 correspond in the vertical direction, and the positions of the two second hinge shafts 42 also correspond in the vertical direction.

[0077] Corresponding to the position of the hinge plate 40, the upper and lower ends of the door body 30 are respectively provided with a guide groove 6 and a door shaft 7. The two guide grooves 6 at the upper and lower ends of the door body 30 correspond in position in the vertical direction, and the two door shafts 7 correspond in position in the vertical direction, so that the movements of the upper and lower ends of the door body 30 are consistent, thereby making the door body 30 open or close more smoothly.

[0078] In this embodiment, continue to refer to Figure 2 The plane on which the side of the box body 10 close to the hinge plate 40 (the first body side wall) is defined as the reference plane M0, and the refrigerator is stored in the cabinet 100. The side close to the cabinet 100 of the reference plane M0 is the outer side, and the side close to the storage compartment is the inner side. When the refrigerator is placed in the cabinet 100 for use, in order to prevent the user's ground unevenness and the cabinet 100 deformation and other factors, when the cabinet 100 is dimensioned, the distance α between the cabinet 100 and the side of the refrigerator (the first body side wall, i.e. the reference plane M0) can be set to 3mm~5mm. In order to ensure that the door body 30 of the refrigerator can be normally opened, the first side edge W of the door body 30 cannot protrude too much from the side of the box body 10 (the reference plane M0) during rotation, so as to avoid the first side edge W colliding with the cabinet 100 and causing the door body 30 to be unable to be normally opened.

[0079] As Figure 3 shown, in this embodiment, the positioning groove 5 is provided as a curved groove. Specifically, in the direction from the first body side wall to the second body side wall, the distance between the curved groove and the plane on which the access opening is located gradually increases, so that the door body 30 moves forward during opening, thereby avoiding interference between the door body 30 and the box body 10, and effectively reducing the wear of the door seal. The center trajectory line of the positioning groove 5 is denoted as a positioning trajectory line S, which is defined by the shape of the positioning groove 5 and is a curved line. In the direction from the first body side wall to the second body side wall, the distance between the positioning trajectory line S and the plane on which the access opening is located gradually increases. As a settable manner, the positioning trajectory line S is a circular arc or an elliptical arc. As an implementable manner, the positioning groove 5 protrudes towards the side close to the access opening, increasing the smoothness of the movement of the door shaft 7 relative to the positioning groove 5.

[0080] The first hinge shaft 41 and the second hinge shaft 42 are located at opposite sides of the positioning groove 5. In the embodiment, the first hinge shaft 41 is located at a side of the positioning groove 5 close to the first body side wall, and the second hinge shaft 42 is located at a side of the positioning groove 5 away from the first body side wall. That is, the first hinge shaft 41 and the second hinge shaft 42 are located at adjacent positions of opposite ends of the positioning groove. The first hinge shaft 41 and the second hinge shaft 42 are adapted to be arranged in the guide groove 6 on the door body 30. During the opening or closing of the door body 30, the first hinge shaft 41 and the second hinge shaft 42 move relative to the guide groove 6. Specifically, during the opening of the door body 30, at least one of the first hinge shaft 41 and the second hinge shaft 42 cooperates with the groove wall of the guide groove 6. It should be noted that in the embodiment, the cooperation of the first hinge shaft 41 and the second hinge shaft 42 with the groove wall of the guide groove 6 is gap cooperation. As an implementable manner, the gap range of the gap cooperation is 0-2mm. As an implementable manner, during the opening of the door body 30, the gap between at least one of the first hinge shaft 41 and the second hinge shaft 42 and the groove wall of the guide groove 6 is 0; that is, at least one of the first hinge shaft 41 and the second hinge shaft 42 cooperates with the guide trajectory line K. As another implementable manner, during the opening of the door body 30, the gap between one of the first hinge shaft 41 and the second hinge shaft 42 and the groove wall of the guide groove 6 is greater than 0; that is, there is a gap between one of the first hinge shaft 41 and the second hinge shaft 42 and the guide trajectory line K, and the other cooperates with the guide trajectory line K; the above setting can not only ensure the guidance of the opening of the door body, but also ensure the stability of the opening of the door body, and can effectively avoid the jamming of the door body 30 during the opening of the door body.

[0081] In addition, as an implementable manner, the first hinge shaft 41 and the second hinge shaft 42 are both cylindrical shafts. During the opening of the door body 30, the outer circumferential surface of the cylindrical first hinge shaft 41 and the second hinge shaft 42 cooperates with the guide groove 6. In the embodiment, the first hinge shaft 41 and the second hinge shaft 42 are both cylindrical shafts, which are easy to process and produce.

[0082] In addition, in the embodiment, the positioning groove 5 is in a curved shape and its distance to the taking and placing opening increases along the direction from the first body side wall to the second body side wall, and the first hinge shaft 41 and the second hinge shaft 42 are both cylindrical shafts, and the corresponding guide groove 6 is more compact, without the need to increase the thickness size of the door body 30.

[0083] Wherein, the axis passing through the centroid of the section of the first hinge axis 41 is denoted as the first centroidal axis P0, and the axis passing through the centroid of the section of the second hinge axis 42 is denoted as the second centroidal axis Q0. In this embodiment, since both the first hinge axis 41 and the second hinge axis 42 are cylindrical axes, the first centroidal axis P0 is the central axis of the first hinge axis 41, and the second centroidal axis Q0 is the central axis of the second hinge axis 42. In the projection of the top wall of the housing 10, the straight line containing the first centroidal axis P0 and the second centroidal axis Q0 is denoted as the first straight line Q0P0. As an optional configuration, the first straight line Q0P0 is parallel to the plane containing the retrieval port. And when the door 30 is closed, the first straight line Q0P0 is located on the side of the centroid plane F near the rear wall 33 of the door. When the door 30 is opened, an external force is applied to the corner of the front wall 31 away from the side wall 32. In this embodiment, the first hinge shaft 41 and the second hinge shaft 42 mainly guide the corner of the door 30 near the rear wall 33 and the side wall 32 to effectively balance the external force that drives the door 30 to open, thereby reducing the shaking of the door 30 and increasing the stability of the door 30 when it is opened.

[0084] The positioning trajectory line S includes a starting positioning point I0 near the end of the door sidewall 32 and an ending positioning point I0 away from the end of the door sidewall 32. e ; Starting positioning point I0 and ending positioning point I e The line containing this line is denoted as the second line I0I. e The positioning trajectory line S is located on the second straight line I0I. e The side closest to the pick-and-place port; that is, the positioning groove protrudes towards the side of the plane where the pick-and-place port is located; the positioning trajectory S is a convex curve protruding towards the pick-and-place port. And the second straight line I0I e The first line Q0P0 intersects at point J. As an optional configuration, the second line I0I... e The angle between the line and the first line Q0P0 is denoted as γ0, where γ0 ∈ [16°, 20°] for any value.

[0085] As a configurable method, see Figure 3 Within the projection of the top wall of the housing 10, the line segment where the first centroidal axis P0 and the starting positioning point I0 lie is denoted as the first line segment P0I0; the line segment where the second centroidal axis Q0 and the ending positioning point I0 lie is denoted as the first line segment P0I0. e The line segment is denoted as the second line segment Q0I. e .

[0086] Among them, the first line segment P0P1 and the second line I0I e The included angle is denoted as the first included angle γ1, where γ1 ∈ any value in [27°, 31°]. The second line segment Q0Q1 intersects the second line I0I. e The included angle is denoted as the second included angle γ2, where γ2 ∈ [37°, 41°] and is any value therein. In this embodiment, γ1 = 29°, γ2 = 39°. (This can be set, I0J:I)e J∈[0.35, 0.5] any value; P0J: Q0J∈[0.5, 0.7] any value; as a specific implementation, I0J: I e J = 0.42, P0J: Q0J = 0.59.

[0087] The above defines the relative position relationship of the first hinge shaft 41, the second hinge shaft 42 and the positioning groove 5, increases the force balance of each component during the opening of the door body 30, so that the movement of the door shaft 7 relative to the positioning groove 5 and the movement of the guide groove 6 relative to the first hinge shaft 41 and the second hinge shaft 42 are more stable during the opening of the door body 30, effectively ensuring the smoothness and stability of the opening of the door body 30.

[0088] In this embodiment, the groove wall of the guide groove 6 is annular; when the door body 30 is closed, the groove wall of the guide groove 6 surrounds the positioning groove 5, the first hinge shaft 41 and the second hinge shaft 42; that is, the positioning groove 5, the first hinge shaft 41 and the second hinge shaft 42 are located inside the annular guide groove 6. In this embodiment, the inner wall of the guide groove 6 defines a guide trajectory line K, and the center of the guide trajectory line K is denoted as a guide center O; in this embodiment, the guide trajectory line K surrounds its guide center O.

[0089] In some embodiments of the present application, the guide trajectory line K includes a first guide segment K1, a second guide segment K2, a third guide segment K3, a fourth guide segment K4 and a fifth guide segment K5 connected in sequence; that is, the guide trajectory line K is in a closed ring shape, and the guide groove 6 is a ring-shaped closed groove, so as to effectively limit the movement of the first hinge shaft 41 and the second hinge shaft 42, while avoiding the disengagement of the first hinge shaft 41 and the second hinge shaft 42 from the guide groove 6. Wherein, the connection point of the fifth guide segment K5 and the first guide segment K1 is denoted as a first inflection point A, the connection point of the first guide segment K1 and the second guide segment K2 is denoted as a second inflection point B, the connection point of the second guide segment K2 and the third guide segment K3 is denoted as a third inflection point C, the connection point of the third guide segment K3 and the fourth guide segment K4 is denoted as a fourth inflection point D, and the connection point of the fourth guide segment K4 and the fifth guide segment K5 is denoted as a fifth inflection point E.

[0090] When the door body 30 is closed, the first hinge shaft 41 cooperates with the first inflection point A of the guide groove 6. That is, when the door body 30 is closed, the first hinge shaft 41 is located at the first inflection point A.

[0091] Wherein, the second inflection point B is located on the side of the first inflection point A close to the door side wall 32 and the door front wall 31;

[0092] The third inflection point C is located on the side of the second inflection point B close to the door front wall 31 and away from the door side wall 32; in this embodiment, the third inflection point C is located on the side of the first inflection point A away from the door side wall 32;

[0093] The fourth inflection point D is located on the side of the third inflection point C close to the door rear wall 33 and away from the door side wall 32, and the fourth inflection point D is located on the side of the second inflection point B close to the door rear wall 33; in this embodiment, the fourth inflection point D is located on the side of the first inflection point A close to the door front wall 31.

[0094] The fifth inflection point E is located on the side of the fourth inflection point D close to the door rear wall 33 and the door side wall 32; in this embodiment, the fifth inflection point E is located on the side of the first inflection point A close to the door rear wall 33 and away from the door side wall 32, and the fifth inflection point E is located on the side of the third inflection point C close to the door side wall 32.

[0095] That is, in the projection of the plane where the door front wall 31 is located, the second inflection point B, the first inflection point A, the fifth inflection point E, the third inflection point C, and the fourth inflection point D are sequentially away from the door side wall 32. In this embodiment, in the projection of the plane where the door front wall 31 is located, the third inflection point C and the fifth inflection point E are located adjacent to each other. It can be provided that, in the projection of the plane where the door front wall 31 is located, the distance between the third inflection point C and the fifth inflection point E is less than 2 cm.

[0096] And in the projection of the plane where the door side wall 32 is located, the fifth inflection point E, the first inflection point A, the fourth inflection point D, the second inflection point B, and the third inflection point C are sequentially away from the door rear wall 33. In this embodiment, in the projection of the plane where the door front wall 31 is located, the fourth inflection point D is closer to the first inflection point A than the second inflection point B. As one of the optional modes, in the projection of the plane where the door side wall 32 is located, the first inflection point A and the fourth inflection point D are located adjacent to each other. It can be provided that, in the projection of the plane where the door side wall 32 is located, the distance between the first inflection point A and the fourth inflection point D is less than 1 cm.

[0097] Above, the guide groove surrounds its guide center O, and the first guide section K1, the second guide section K2, the third guide section K3, the fourth guide section K4, and the fifth guide section K5 are all protruded in the direction away from the guide center O of the bottom wall of the guide groove 6.

[0098] In the direction from the door rear wall 33 to the door front wall 31, the distance between the first guide section K1 and the door side wall 32 gradually decreases, the distance between the second guide section K2 and the door side wall 32 gradually increases, the distance between the third guide section K3 and the door side wall 32 gradually decreases, the distance between the fourth guide section K4 and the door side wall 32 gradually increases, and the distance between the fifth guide section K5 and the door side wall 32 gradually decreases. As another optional mode, the distance between the fifth guide section K5 and the door side wall 32 first gradually decreases, then gradually increases, and then gradually decreases again, and then the first guide section K1 is connected to the first inflection point A.

[0099] That is, in this embodiment, the second inflection point B is the point of the guide groove 6 closest to the door side wall 32, and the fourth inflection point D is the point of the guide groove farthest away from the door side wall 32; the third inflection point C is the point of the guide groove 6 closest to the door front wall 31, and the fifth inflection point E is the point of the guide groove closest to the door rear wall 33.

[0100] As one possible implementation, when the door 30 is closed, the first hinge shaft 41 engages with the first inflection point A of the guide groove 6; the second hinge shaft 42 corresponds to the position of the fourth guide segment K4; in this embodiment, when the door 30 is closed, the second hinge shaft 42 and the fourth guide segment K4 are separated; that is, there is a gap between the second hinge shaft 42 and the fourth guide segment K4.

[0101] In this embodiment, the central axis of the door hinge 7 is denoted as the positioning central axis I, and the central trajectory line (positioning trajectory line S) of the positioning groove 5 includes the starting positioning point I0 and the ending positioning point I. e The first positioning point I1, the second positioning point I2, the third positioning point I3, the fourth positioning point I4, and the fifth positioning point I5; wherein, the starting positioning point I0, the first positioning point I1, the second positioning point I2, the third positioning point I3, the fourth positioning point I4, the fifth positioning point I5, and the ending positioning point I5 are... e The distance from the door sidewall 32 increases sequentially; the positioning trajectory line S extends along the curve from the starting positioning point I0, passing sequentially through the second positioning point I2, the third positioning point I3, the fourth positioning point I4, and the fifth positioning point I5, to the end positioning point I. e During the opening of the door 30, the positioning center axis I moves relative to the positioning trajectory line S. It should be noted that in this embodiment, the fifth positioning point I5 is set at the end positioning point I. e The side closest to the first body sidewall; as another possible implementation, the fifth positioning point I5 and the end positioning point I e That is, the fifth positioning point I5 is the end positioning point I. e , where the endpoint of the positioning trajectory line S is away from the side wall of the first body.

[0102] In this embodiment, the line segment with the centroid O of the positioning center axis I and the guide trajectory line K as endpoints within the projection of the top wall of the housing 10 is denoted as the axis segment IO. In this embodiment, the guide groove 6 and the door hinge 7 are disposed on the door body 30, and the positioning groove 5, the first hinge axis 41, and the second hinge axis 42 are fixed to the housing 10 by hinges. The movement of the door body 30 relative to the housing 10 is equivalent to relative movement in a plane parallel to the top wall of the housing 10. In the plane parallel to the top wall of the housing 10, the movement of the door body 30 relative to the housing 10 is equivalent to the movement of the guide groove 6 relative to the hinge, and also equivalent to the movement of the door body 30 relative to the housing 10. In this embodiment, for ease of explanation, the axis segment IO represents the movement of the door body 30, and the positioning center axis I represents the movement of the door hinge 7.

[0103] When the door body 30 is opened, the positioning groove 5 and the door shaft 7 are in relative motion, as are the first hinge shaft 41 or the second hinge shaft 42 and the guide groove 6. In this embodiment, for the sake of convenience, the description is given in the manner that the hinge (the positioning groove 5, the first hinge shaft 41 and the second hinge shaft 42) is the static reference, the guide groove 6 moves relative to the first hinge shaft 41 and the second hinge shaft 42, and the door shaft 7 moves relative to the positioning groove 5, to describe the specific process of opening the door body 30.

[0104] As shown in Figures 7-20 , the movement of the door shaft 7 along the positioning groove 5 is equivalent to the movement of the positioning center axis I along the positioning track line S, and the movement of the guide groove 6 relative to the first hinge shaft 41 and the second hinge shaft 42 is equivalent to the movement of the guide track line K relative to the first hinge shaft 41 and the second hinge shaft 42.

[0105] In this embodiment, the maximum opening angle G max of the refrigerator is taken as an example for description, which is greater than 90°. When the door body 30 is opened to the maximum opening angle G max , the door body 30 is rotated and opened to a specific angle, and the relative positions of the door shaft 7 relative to the positioning groove 5 and the guide groove 6 relative to the first hinge shaft 41 and the second hinge shaft 42 are as follows.

[0106] Wherein, φ represents the opening angle of the door body 30, and the opening angle φ = 0° when the door body 30 is in the closed state.

[0107] As shown in Figure 7 , when φ = 0°, the door body 30 is in the closed state, and the positioning center axis I is located at the starting positioning point I0 of the positioning track line S. That is, when the door body 30 is closed, the door shaft 7 is located at one end of the positioning groove 5 close to the door side wall 32. The first hinge shaft 41 cooperates with the first inflection point A of the guide track line K, and the second hinge shaft 42 cooperates with the fourth guide segment K4. At this time (when φ = 0°), the guide center O relative to the hinge position is recorded as O0; the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D and the fifth inflection point E of the guide groove 6 relative to the hinge position are recorded as A0, B0, C0, D0 and E0 in turn.

[0108] As an implementable manner, when the door body 30 is closed, there is a reserved gap between the second hinge shaft 42 and the fourth guide segment K4, that is, the second hinge shaft 42 does not contact the fourth guide segment K4 at this time; and the first hinge shaft 41 contacts the first inflection point A of the guide track line K. In addition, when the door body 30 is in the closed state, the center of mass plane F of the door body 30 is located on the side of the positioning groove 5, the first hinge shaft 41 and the second hinge shaft 42 close to the door front wall 31. That is, when the door body 30 is closed, the center of mass plane F is not between the first hinge shaft 41 and the second hinge shaft 42.

[0109] As shown in Figure 8As shown, when φ ∈ (0°, G2), the door body 30 rotates from the closed state to G2; during the above opening process, the positioning center axis I moves inward (towards the second body side wall) along the positioning track line S; the first guide section K1 cooperates with the first hinge shaft 41, and the first guide section K1 rotates counterclockwise relative to the first hinge shaft 41 and moves inward (towards the second body side wall); the fourth guide section K4 cooperates with the second hinge shaft 42, and the fourth guide section K4 rotates counterclockwise relative to the second hinge shaft 42 and moves inward (towards the second body side wall). In addition, during the process of rotating the door body 30 from the closed state to G2, the centroid plane F of the door body 30 is located on the side of the positioning groove 5, the first hinge shaft 41, and the second hinge shaft 42 away from the taking and placing opening. That is, during the process of rotating the door body 30 from the closed state to G2, the centroid plane F is not between the first hinge shaft 41 and the second hinge shaft 42.

[0110] As above, when the door body 30 is opened at an angle φ ∈ (0°, G2), the movement trend in this opening angle interval is consistent; the only difference is that the opening angle is different, the position of the first hinge shaft 41 relative to the first guide section K1 of the guide track line K is different, the position of the second hinge shaft 42 relative to the fourth guide section K4 of the guide track line K is different, and the position of the door shaft 7 relative to the positioning groove 5 is different. In this way, when φ ∈ (0°, G2), selecting one opening angle can represent the relative positions of the first hinge shaft 41 and the second hinge shaft 42 with the guide groove 6, and the relative position of the door shaft 7 with the positioning groove 5 when the door body 30 is opened to the corresponding interval. Specifically, as shown in Figure 8 and Figure 14 φ = G1 ∈ (0°, G2) represents the position in this opening angle interval, and is compared with the state when the door body 30 is opened to other states.

[0111] As shown in Figure 8 and Figure 14 When the door body 30 is opened by G1, the positioning center axis I is located at the first positioning point I1 of the positioning track line S; wherein the first positioning point I1 is located on the side of the initial positioning point I0 away from the door side wall 32; the first guide section K1 of the guide track line K cooperates with the first hinge shaft 41, and the fourth guide section K4 cooperates with the second hinge shaft 42. At this time (when φ = G1), the guide centroid O is relative to the hinge position O1; the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 are relative to the hinge position in turn A1, B1, C1, D1, E1. As a settable way, φ = G1 ∈ [5°, 8°] any value.

[0112] As shown in Figure 9 , Figure 15As shown, when φ = G2, the door body 30 is rotated to open to G2; the positioning center axis I is located at the second positioning point I2 of the positioning track line S; wherein the second positioning point I2 is located on the side of the first positioning point I1 away from the door side wall 32. The first hinge shaft 41 cooperates with the second inflection point B of the guide track line K, and the second hinge shaft 42 cooperates with the fourth guide segment K4. At this time (when φ = G2), the guide center O is relative to the hinge position recorded as O2; the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 are relative to the hinge position recorded as A2, B2, C2, D2, and E2 in turn.

[0113] As an implementable manner, when the door body 30 is opened to G2, there is a reserved gap between the second hinge shaft 42 and the fourth guide segment K4, that is, at this time the second hinge shaft 42 does not contact the fourth guide segment K4; while the first hinge shaft 41 contacts the second inflection point B of the guide track line K. That is, as an implementable manner, when the door body 30 is opened from the closed state to G2, there is a reserved gap between the second hinge shaft 42 and the guide track line K, that is, at this time the second hinge shaft 42 does not contact the guide track line K; while the first hinge shaft 41 contacts the guide track line K. That is, it can be provided that when the door body 30 is opened from the closed state to G2, the first hinge shaft 41 always contacts and cooperates with the guide track line K, and the second hinge shaft 42 at least contacts the guide track line K when it is opened to some specific angle. The above setting can effectively avoid the occurrence of jam during the opening of the door body 30. In addition, when the door body 30 is opened to G2, the centroid plane F of the door body 30 is located between the first hinge shaft 41 and the second hinge shaft 42. In this embodiment, when the door body 30 is opened to G2, the centroid plane F is close to the first hinge shaft 41 relative to the second hinge shaft 42. As an implementable manner, φ = G2 ∈ [38°, 40°] any value.

[0114] When φ ∈ (G2, G3), the door body 30 is rotated to open from G2 to G3 (not shown in the figure, combined with the process of opening the door body 30 to G2 and G3); during the above opening process, the positioning center axis I moves inward (toward the direction close to the second body side wall) along the positioning track line S; the second guide segment K2 cooperates with the first hinge shaft 41, and the second guide segment K2 rotates counterclockwise relative to the first hinge shaft 41 and moves inward (toward the direction close to the second body side wall); the fourth guide segment K4 cooperates with the second hinge shaft 42, and the fourth guide segment K4 rotates counterclockwise relative to the second hinge shaft 42 and moves inward (toward the direction close to the second body side wall). In addition, during the process of rotating the door body 30 from G2 to G3, the centroid plane F of the door body 30 is located between the first hinge shaft 41 and the second hinge shaft 42. In this embodiment, during the process of rotating the door body 30 from G2 to G3, as the opening angle increases, the centroid plane F moves to the side close to the second hinge shaft 42.

[0115] As shown in Figure 10 and Figure 16 shown, when the door body 30 is opened to G3, the positioning center axis I is located at the third positioning point I3 of the positioning track line S; wherein the third positioning point I3 is located on the side of the second positioning point I2 away from the door side wall 32; the first hinge shaft 41 cooperates with the second guide segment K2 of the guide track line K, and the second hinge shaft 42 cooperates with the fifth inflection point E. At this time (when φ=G3), the guide center O relative to the position of the hinge is recorded as O3; the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 relative to the position of the hinge are recorded as A3, B3, C3, D3, and E3 in turn.

[0116] As an implementable manner, when the door body 30 is opened to G3, the first hinge shaft 41 is in contact with the second guide segment K2 of the guide track line K; the second hinge shaft 42 is in contact with the fifth inflection point E of the fourth guide segment K4; that is, as an implementable manner, when the door body 30 is opened from G2 to G3, the first hinge shaft 41 is in contact with the guide track line K, and the second hinge shaft 42 is in contact with the guide track line K. In addition, when the door body 30 is opened to G3, the centroid plane F of the door body 30 is located between the first hinge shaft 41 and the second hinge shaft 42. In this embodiment, when the door body 30 is opened to G3, the centroid plane F is close to the first hinge shaft 41 relative to the second hinge shaft 42. As an implementable manner, φ=G3∈[76°, 80°] any value.

[0117] As shown in Figures 10-12 , when φ∈(G3, G max , the door body 30 is opened from G3 to G max >90°; during the above opening process, the positioning center axis I moves inward (toward the direction close to the second body side wall) along the positioning track line S; the second guide segment K2 cooperates with the first hinge shaft 41, and the second guide segment K2 rotates counterclockwise relative to the first hinge shaft 41 and moves inward (toward the direction close to the second body side wall); the fifth guide segment K5 cooperates with the second hinge shaft 42, and the fifth guide segment K5 rotates counterclockwise relative to the second hinge shaft 42 and moves inward (toward the direction close to the second body side wall). In addition, during the process that the door body 30 is opened from G3 to G max >90°, the centroid plane F of the door body 30 is located between the first hinge shaft 41 and the second hinge shaft 42. In this embodiment, during the process that the door body 30 is opened from G3 to G max >90°, as the opening angle increases, the centroid plane F moves to the side close to the second hinge shaft 42.

[0118] Above, the opening angle φ∈(G3, G maxWhen the opening angle range is constant, the movement trend remains the same; the only difference is that the position of the first hinge axis 41 relative to the second guide segment K2 of the guide trajectory line K is different, the position of the second hinge axis 42 relative to the fifth guide segment K5 of the guide trajectory line K is different, and the position of the door hinge 7 relative to the positioning groove 5 is different. Thus, the opening angle φ∈(G3, G max When the door 30 is opened to the corresponding section, selecting one of the opening angles can represent the relative positions of the first hinge axis 41, the second hinge axis 42, and the guide groove 6, as well as the relative positions of the door hinge 7 and the positioning groove 5. Specifically, as shown in the figure... Figure 11 and Figure 17 As shown, with φ=G4∈(G3, G max ] represents the position within the opening angle range, for comparison with when the door 30 is opened to other states.

[0119] As one feasible approach, when the door 30 is opened to G4, the positioning center axis I is located at the fourth positioning point I4 of the positioning trajectory line S; wherein, the fourth positioning point I4 is located on the side of the third positioning point I3 away from the door sidewall 32. The first hinge axis 41 cooperates with the second guide segment K2 of the guide trajectory line K, and the second hinge axis 42 cooperates with the fifth guide segment K5 of the guide trajectory line K. At this time (when φ=G4), the position of the guide centroid O relative to the hinge is recorded as O4; the positions of the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 relative to the hinge are recorded as A4, B4, C4, D4, and E4 respectively. In this embodiment, G4=90°. As one feasible approach, when the door is opened to G4=90°, the door 30 is located inside the reference plane M0.

[0120] like Figure 12 and Figure 18 As shown, door 30 opens to G. max At this time, the positioning center axis I is located at the fifth positioning point I5 on the positioning trajectory line S; wherein, the fifth positioning point I5 is located on the side of the fourth positioning point I4 away from the door sidewall 32; the first hinge axis 41 cooperates with the second guide segment K2 of the guide trajectory line K, and the second hinge axis 42 cooperates with the fifth guide segment K5 of the guide trajectory line K. At this time (φ=G max When the guide centroid O is located relative to the hinge, it is recorded as O5; the positions of the first inflection point A, the second inflection point B, the third inflection point C, the fourth inflection point D, and the fifth inflection point E of the guide groove 6 relative to the hinge are recorded as A5, B5, C5, D5, and E5 respectively.

[0121] As one feasible approach, door 30 is opened to G. max At that time, the first hinge axis 41 engages with the third inflection point C of the guide trajectory line K, and the second hinge axis 42 engages with the fifth guide segment K5 of the guide trajectory line K.

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

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

[0124] During the process of the door 30 opening from the closed state to G2, the first hinge shaft 41 cooperates with the first guide section K1, and the second hinge shaft 42 cooperates with the fourth guide section K4.

[0125] During the process of the door 30 opening from G2 to G3, the first hinge shaft 41 cooperates with the second guide section K2, and the second hinge shaft 42 cooperates with the fourth guide section K4;

[0126] Door 30 is opened from G3 to G max During the process, the first hinge shaft 41 cooperates with the second guide segment K2, and the second hinge shaft 42 cooperates with the fifth guide segment K5.

[0127] In summary, φ=G2 and φ=G3 will open door 30 from the closed state to G. max The process is divided into three stages. The following explanation uses the hinges (positioning groove 5, first hinge shaft 41, and second hinge shaft 42) as a stationary reference point, and focuses on the relative movement of the guide groove 6 relative to the first hinge shaft 41 and the second hinge shaft 42, and the door hinge 7 relative to the positioning groove 5.

[0128] The first stage, combined with Figures 7-9 ,like Figure 15 As shown, the process of the door 30 rotating from the closed state to G2.

[0129] In this first stage, the door 30 opens from 0° through G1 to G2. During this process, the positioning center axis I moves along the positioning trajectory line S of the positioning groove 5 in a direction away from the door side wall 32 and closer to the door front wall 31; the guide groove 6 rotates counterclockwise, and the first guide segment K1 of the guide groove 6 engages with the first hinge axis 41, and the fourth guide segment K4 engages with the second hinge axis 42. As the opening angle increases, the second inflection point B of the guide groove 6 gradually approaches the first hinge axis 41, and the fifth inflection point E gradually approaches the second hinge axis 42. As one possible implementation, when the door 30 is opened to G2, the second inflection point B engages with the first hinge axis 41, and the fourth guide segment K4 engages with the second hinge axis 42.

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

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

[0132] In this second stage, the positioning center axis I moves along the positioning trajectory line S of the positioning groove 5 in a direction away from the door side wall 32 and closer to the front wall 31; the guide groove 6 rotates counterclockwise, and the second guide segment K2 of the guide groove 6 engages with the first hinge axis 41, and the fourth guide segment K4 engages with the second hinge axis 42. As the opening angle increases, the third inflection point C of the guide groove 6 gradually approaches the first hinge axis 41, and the fifth inflection point E gradually approaches the second hinge axis 42. As one possible implementation, when the door 30 is opened to G3, the positioning center axis I moves to the third positioning point I3 at the end of the positioning trajectory line S away from the door side wall 32, the second guide segment K2 engages with the first hinge axis 41, and the fifth inflection point E engages with the second hinge axis 42.

[0133] In the opening process of the second stage above, taking the hinge (the positioning groove 5, the first hinge shaft 41 and the second hinge shaft 42) as the reference object, when the door body 30 is opened from G2 to G3, the axis line segment is rotated counterclockwise from I2O2 and sequentially moves inward and forward to I3O3 (I2O2→I3O3). Since the guide groove 6 and the door shaft 7 are arranged on the door body 30, the positioning line segment IO represents the movement of the door body 30; then it is concluded that, taking the cabinet 10 (the hinge) as the reference object, the door body 30 is counterclockwise opened relative to the cabinet 10 and moves a certain distance inward and forward, thereby compensating for the outward displacement of the first side edge W caused by the pure rotation of the door body 30, effectively avoiding the mutual interference between the door body 30 and the cabinet 100 when the door body 30 is opened, increasing the maximum opening angle of the door body 30, and also avoiding the interference between the door body 30 and the cabinet 10.

[0134] In the third stage, as shown in Figure 19 , the door body 30 is rotated and opened from G3 to G max .

[0135] In the process that the door body 30 is opened from G3 to G max , the positioning center axis I moves along the positioning track line S of the positioning groove 5 in the direction away from the door side wall 32 and close to the door front wall 31; the guide groove 6 is counterclockwise rotated, the second guide segment K2 of the guide groove 6 cooperates with the first hinge shaft 41, and the fifth guide segment K5 cooperates with the second hinge shaft 42. With the increase of the opening angle, the third inflection point C of the guide groove 6 gradually approaches the first hinge shaft 41, and the first inflection point A gradually approaches the second hinge shaft 42. As an implementable manner, when the door body 30 is opened to G max , the second guide segment K2 cooperates with the first hinge shaft 41, and the fifth guide segment K5 cooperates with the second hinge shaft 42.

[0136] In the opening process of the third stage above, taking the hinge (the positioning groove 5, the first hinge shaft 41 and the second hinge shaft 42) as the reference object, when the door body 30 is opened from G3 to G max , the axis line segment is rotated counterclockwise from I3O3 and sequentially moves inward and forward to I4O4 and I5O5 (I3O3→I4O4→I5O5). Since the guide groove 6 and the door shaft 7 are arranged on the door body 30, the positioning line segment IO represents the movement of the door body 30; then it is concluded that, taking the cabinet 10 (the hinge) as the reference object, the door body 30 is counterclockwise opened relative to the cabinet 10 and moves a certain distance inward and forward, thereby compensating for the outward displacement of the first side edge W caused by the pure rotation of the door body 30, effectively avoiding the mutual interference between the door body 30 and the cabinet 100 when the door body 30 is opened, increasing the maximum opening angle of the door body 30, and also avoiding the interference between the door body 30 and the cabinet 10, effectively reducing the wear of the door seal.

[0137] In combination with the movement process of the first stage to the third stage above, in combination with Figures 14-19 , as shown inFigure 20 As shown, when door 30 is opened from the closed state to G... max During the process, the axis line segment rotates counterclockwise from I0O0 and moves inward and forward sequentially through I1O1, I2O2, I3O3, I4O4 to I5O5 (I0O0→I1O1→I2O2→I3O3→I4O4→I5O5). The door 30 maintains an inward and forward movement trend during the rotation and opening process, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30. This effectively avoids interference between the door 30 and the cabinet 100 when the door is opened, increases the maximum opening angle of the door 30, and also avoids interference between the door 30 and the cabinet 10, effectively reducing the wear of the door seal.

[0138] Combining the movement processes of the first to third stages above, during the opening process of the door 30, the door 30 always moves inward; and the door 30 is always in a state of inward movement relative to its closed state.

[0139] In summary, combining Figures 14-19 ,like Figure 20 As shown, door 30 opens from the closed state to G. max During the process of >90°, the door 30 continues to rotate and move inward a certain distance. Specifically, the door 30 opens from the closed state to G... max During the process, the door 30 rotates around a dynamically changing point, thus causing the door 30 to always move inward.

[0140] As one feasible approach, the door 30 is opened to its maximum angle G. max When the angle is greater than 90°, the fifth positioning point I5, where the positioning center axis I is located relative to the positioning trajectory line S, is set as the endpoint of the positioning trajectory line S. It should be noted that in this embodiment, the positioning trajectory line S includes the end positioning point I located on the side of the fifth positioning point I5 furthest from the door sidewall 32. e The above settings define the end-point positioning point I. e During the opening process, the door hinge 7 and the positioning groove 5 at the end away from the door side wall 32 always maintain a gap, which reduces the mutual wear between the door hinge 7 and the positioning groove 5 and extends the service life of the door hinge 7 and the door side wall 32.

[0141] like Figure 19 As shown, in some embodiments of this application, during the process of the door 30 opening from the closed state to G2, the distance that the door 30 moves inward for each unit angle of opening is denoted as δ1;

[0142] Door 30 is opened from G2 to G maxThe distance that the door body 30 moves inward per unit angle of opening is recorded as δ2 during the process of opening more than 90°; wherein, δ1 > δ2. That is, during the process of opening, the door body 30 rotates to open in the early stage while performing a large amount of compensation for inward displacement, and in the later stage, the door body 30 rotates to open while performing a small amount of compensation for inward displacement. Corresponding to the compensation for the outward displacement caused by simply rotating the first side edge W when the door body 30 is opened, the compensation for the inward displacement is no longer excessive in the later stage of opening, so as to avoid unnecessary excessive movement of the door body 30 inward to block the taking and placing opening and affect the user in taking and placing food materials.

[0143] In the above embodiment, the door body 30 is opened to the maximum angle G max During the process of opening more than 90°, the first hinge shaft 41 always moves relative to the guide groove 6, and the second hinge shaft 42 always moves relative to the guide groove 6.

[0144] In combination with Figures 7-12 the figure, the door body 30 rotates from the closed state to the maximum angle G max During the process of opening more than 90°, the relative position relationship between the centroid plane F and the first hinge shaft 41 and the second hinge shaft 42 changes constantly; which is described below.

[0145] Before the door body 30 is opened from the closed state to G2, the centroid plane F is located on the side away from the taking and placing opening of the first hinge shaft 41, the second hinge shaft 42 and the positioning groove 5. That is, before the door body 30 is opened from the closed state to G2, the centroid plane F is not between the first hinge shaft 41 and the second hinge shaft 42.

[0146] During the process of opening from G2 to G max (> 90°), the centroid plane F is always located between the first hinge shaft 41 and the second hinge shaft 42. In this embodiment, G2 ∈ [35°, 40°]; G max > 90°; in this embodiment, G2 = 40°, G max = 106°. It can be seen that in this embodiment, during most of the opening stroke (62% of the stroke, 40°-106°) of the door body 30, the centroid plane F is always located between the first hinge shaft 41 and the second hinge shaft 42, so as to ensure that the door body 30 is stressed better and the door body 30 is opened more stably.

[0147] Wherein, the midpoint of the line segment Q0P0 is recorded as the guide midpoint H; the distance between the guide midpoint H and the centroid plane F is recorded as the offset distance R; wherein, when the guide midpoint H is located on the side of the centroid plane F away from the door front wall 31, the offset distance R is positive. Correspondingly, when the guide midpoint H is located on the side of the centroid plane F close to the door front wall 31, the offset distance R is negative; when the guide midpoint H is located on the centroid plane F, the offset distance R is 0.

[0148] In this embodiment, the door body 30 is opened from the closed state to G max During the process that the door body 30 is opened from G3 to G max , the barycentric plane F is located between the first hinge shaft 41 and the second hinge shaft 42, and the offset distance R between the guiding midpoint H and the barycentric plane F shows a decreasing trend. That is, during the process that the door body 30 is opened from G3 to G max , the offset distance R shows a decreasing trend. As an implementable manner, the offset distance R is less than 5 mm (for example, R4 and R5 are any value between 0 and 5 mm) during the process that the door body 30 is opened from the vicinity of 90° (which can be set as any value between 85° and 92°) to G max . That is, during the process that the door body 30 is opened from the vicinity of 90° (which can be set as any value between 85° and 92°) to G max , the guiding midpoint H is located near the barycentric plane F. During the process that the door body 30 is opened from the closed state, the moment of the door body 30 increases with the increase of the opening angle, and the stability of the door body 30 deteriorates, which is prone to shaking. In this embodiment, during the process that the door body 30 is opened from G3 to G max , the offset distance R between the guiding midpoint H and the barycentric plane F shows a decreasing trend, which matches the opening angle of the door body 30 to enhance the stability of the door body 30 during the opening process. In addition, during the process that the door body 30 is opened from 90° to G max (not less than 90°), the offset distance R is limited in a small range, and the barycentric plane F is near the center point (guiding midpoint H) of the positioning line segment IO, which effectively enhances the later stage of the opening of the door body 30 (opening close to 90° to the maximum angle G max ).

[0149] The following describes the stage during the process that the door body 30 is opened from G3 to G max , the barycentric plane F is located between the first hinge shaft 41 and the second hinge shaft 42.

[0150] During the process that the door body 30 is opened from the closed state to G max , the door body opening angle is 0°, G1, G2, G3, G3, G max , and the corresponding offset distance is R0, R1, R2, R3, R4, R5, respectively. As an implementable manner, R0>R1>R2>R3>R4>R5>0.

[0151] Specifically, during the process that the door body 30 is opened from G3 to G max , the barycentric plane F is located between the first hinge shaft 41 and the second hinge shaft 42, and the offset distance R between the guiding midpoint H and the barycentric plane F shows a decreasing trend. That is, during the process that the door body 30 is opened from G3 to G max , the offset distance R shows a decreasing trend. As an implementable manner, the offset distance R is less than 5 mm (for example, R4 and R5 are any value between 0 and 5 mm) during the process that the door body 30 is opened from the vicinity of 90° (which can be set as any value between 85° and 92°) to G max . That is, during the process that the door body 30 is opened from the vicinity of 90° (which can be set as any value between 85° and 92°) to G max , the guiding midpoint H is located near the barycentric plane F. During the process that the door body 30 is opened from the closed state, the moment of the door body 30 increases with the increase of the opening angle, and the stability of the door body 30 deteriorates, which is prone to shaking. In this embodiment, during the process that the door body 30 is opened from G3 to G max , the offset distance R between the guiding midpoint H and the barycentric plane F shows a decreasing trend, which matches the opening angle of the door body 30 to enhance the stability of the door body 30 during the opening process. In addition, during the process that the door body 30 is opened from 90° to G max (not less than 90°), the offset distance R is limited in a small range, and the barycentric plane F is near the center point (guiding midpoint H) of the positioning line segment IO, which effectively enhances the later stage of the opening of the door body 30 (opening close to 90° to the maximum angle Gmax The guiding track line K in this embodiment has the above characteristics, and the door body 30 is more smooth in opening.

[0152] Since the hinge plate 40 is fixed to the cabinet 10, the first hinge shaft 41, the second hinge shaft 42 and the positioning groove 5 are arranged on the hinge plate 40. The positions of the first hinge shaft 41 and the second hinge shaft 42 relative to the cabinet 10 remain unchanged. In this embodiment, when the door body 30 is closed, the door side wall 32 is flush with the first body side wall of the cabinet 10. It should be noted that flush includes complete flush, and also includes approximate flush, such as a distance of less than 1 mm between the two side walls. That is, the two planes are defined as flush when the distance between the two planes is less than 1 mm.

[0153] As an implementable manner, as shown in Figure 11 When the door body 30 is opened to 90°, the center axis (positioning center axis I) of the door shaft 7 is located at the fourth positioning point I4 of the positioning track line S; the distance between the fourth positioning point I4 and the reference plane M0 is L1. The door front wall 31 is approximately parallel to the first body side wall; the distance between the positioning center axis I (the fourth positioning point I4) and the door front wall 31 is L2. In this embodiment, approximately parallel is specifically defined as an angle between two planes being any value within 0°~2°. That is, the two planes are defined as approximately parallel when the angle between the two planes is any value within 0°~2°.

[0154] When L1 is approximately equal to L2, the door front wall 31 is flush with the first body side wall of the cabinet 10 when the door body 30 is opened to 90°; wherein L1 is approximately equal to L2 is specifically defined as a difference between L1 and L2 being any value within -1mm~1mm.

[0155] When L1>L2, the door front wall 31 is inwardly recessed from the first body side wall of the cabinet 10 when the door body 30 is opened to 90°.

[0156] Wherein, the distance between the door front wall 31 and the reference plane M0 when the door body 30 is opened to 90° is recorded as a first distance λ. When the door front wall 31 is located on the inner side of the reference plane M0, the first distance λ is recorded as a positive number. As an implementable manner, λ∈[0.5, 2], unit: mm. At this time, the door body 30 is located on the inner side of the reference plane M0, which is beneficial to the refrigerator embedded in the cabinet 100 to be opened to a larger angle.

[0157] When L1<L2, the door front wall 31 protrudes outwardly from the first body side wall of the cabinet 10 when the door body 30 is opened to 90°.

[0158] As an implementable manner, L1 is approximately equal to L2 or L1>L2, so that the door body 30 can be opened to a larger angle after being opened to 90°, which is convenient for users to take and place articles.

[0159] As another implementable manner, L1 < L2, 0≤L2-L1≤0.2α, to reserve space and avoid collision between the door body 30 and the cabinet 100.

[0160] As an implementable manner, in combination with Figures 7-13 As shown in the figure, in the embodiment, the door body 30 has a second side edge N and a first side edge W, and the second side edge N is closer to the cabinet 10 than the first side edge W when the door body 30 is in the closed state relative to the cabinet 10. The embodiment is further defined with a first reference plane M1 and a second reference plane M2. Wherein, referring to Figure 13 As shown in the figure, the first reference plane M1 is a plane parallel to the reference plane M0 and perpendicular to the plane where the access opening is located, and the first reference plane M1 is located outside the reference plane M0, and the distance between the two planes is α, that is, the first reference plane M1 is the plane where the inner wall of the cabinet 100 close to the cabinet 10 is located; the second reference plane M2 is the plane where the access opening of the storage space is located. The first reference plane M1 and the second reference plane M2 do not move during the opening process of the door body 30 relative to the cabinet 10, and are reference planes that remain stationary relative to the cabinet 10. It should be noted that the second reference plane M2 is the plane where the access opening defined by the cabinet 10 is located, and it does not move forward due to the setting of other components such as deformable door seals at the access opening of the cabinet 10.

[0161] In the embodiment, when the door body 30 is opened to the second angle G2, the first side edge W exceeds the reference plane M0 by the maximum distance, and the first side edge W is located between the reference plane M0 and the first reference plane M1. At this time, the distance between the first side edge W and the first reference plane M1 is the smallest.

[0162] During the process of opening the door body 30 from the closed state relative to the cabinet 10 to G max The first side edge W moves along the first side edge trajectory W0W5 first towards the direction close to the first reference plane M1 and the second reference plane M2, and then towards the direction away from the first reference plane M1 and close to the second reference plane M2. That is, the distance between the first side edge W and the first reference plane M1 decreases first and then increases.

[0163] At the same time, the second side edge N moves along the second side edge trajectory N0N5 first towards the side away from the first reference plane M1 and close to the second reference plane M2, and then towards the side away from the first reference plane M1 and away from the second reference plane M2. That is, the distance between the second side edge N and the second reference plane M2 decreases first and then increases.

[0164] In some embodiments, for the movement of the first side edge W and the second side edge N in the respective direction, the first side edge trajectory W0W5 is located inside the first reference plane M1, and the distance between the first side edge trajectory W0W5 and the first reference plane M1 is greater than the first predetermined distance d1; that is, the minimum distance between the first side edge trajectory W0W5 and the first reference plane M1 is the first predetermined distance d1; the second side edge trajectory N0N5 is located on the front side of the second reference plane M2, and the distance between the second side edge trajectory N0N5 and the second reference plane M2 is greater than the second predetermined distance d2. The above limits the distance between the movement trajectory and the corresponding reference plane, which ensures that the side edge can move smoothly and not exceed the predetermined range.

[0165] That is, the minimum distance between the first side edge trajectory W0W5 and the first reference plane M1 is the first predetermined distance d1; the minimum distance between the second side edge trajectory N0N5 and the second reference plane M2 is the second predetermined distance d2. d1 is not less than 0.5h; d2 is not less than 0.12h; wherein h is the thickness of the door body. Specifically, the thickness of the door body is not less than 2 centimeters. In this embodiment, d1=0.676h; d2=0.165h. The above settings effectively ensure that the second side edge N of the door body 30 does not extrude the cabinet 10; the first side edge W does not excessively exceed the first side wall of the cabinet 10, so that the door body 30 does not have obvious displacement problem when opening, and the movement of the door body 30 is more stable.

[0166] Above, the related limitation of the first predetermined distance d1 determines the extent to which the first side edge W can exceed the side of the cabinet 10. In actual application, the first side edge W can be allowed to exceed the side of the cabinet 10 to a certain extent, for example, for the embedded use of the cabinet assembly, there is a certain gap (α) between the cabinet 10 and the cabinet or wall in which it is embedded, which allows the first side edge W to exceed the side of the cabinet 10 to a certain extent. Similarly, the related limitation of the second predetermined distance d2 determines the extent to which the second side edge N can extrude the cabinet 10. In actual application, the second side edge N can be allowed to extrude the cabinet 10 to a certain extent, for example, if a deformable door seal is provided on the cabinet 10, the certain extrusion of the cabinet 10 by the second side edge N can be ignored.

[0167] In addition, as a settable way, during the process that the door body 30 is opened relative to the cabinet 10 from G1 to G3, for each unit angle of opening of the door body 30, the distance change between the first side edge W and the first reference plane M1 is denoted as ξ1;

[0168] During the process that the door body 30 is opened relative to the cabinet 10 from G3 to the maximum angle G max , for each unit angle of opening of the door body 30, the distance change between the first side edge W and the first reference plane M1 is denoted as ξ2; ξ1 and ξ2 are both positive numbers;

[0169] Wherein, ξ1<ξ2. That is, in the early stage of opening of the door body 30 (0° to G3 (0°~78°)), the distance between the first side edge W and the plane of the taking and placing opening changes gently, effectively limiting the distance of the first side edge W beyond the first body side wall, so as to avoid interference between the first side edge W and the cabinet.

[0170] In some embodiments of the present application, during the process that the door body 30 is opened from G1 to G3 relative to the cabinet 10, the distance change amount of the second side edge N relative to the second reference plane M2 per unit angle of opening of the door body 30 is denoted as μ1.

[0171] During the process that the door body 30 is opened from G3 to the maximum angle G max of the door body 30 relative to the cabinet 10, the distance change amount of the second side edge N relative to the second reference plane M2 per unit angle of opening of the door body 30 is denoted as μ2; μ1 and μ2 are both positive numbers; wherein, μ1<μ2; that is, in the later stage of opening of the door body 30 (G4 to G max of the door body 30, the distance between the second side edge N and the second reference plane M2 (the plane of the taking and placing opening) changes rapidly, and the second side edge N quickly moves away from the second reference plane M2, so as to quickly release the extrusion of the second side edge N on the door seal. In the early stage of opening of the door body 30 (0° to G3 (0°~78°)), the distance between the second side edge N and the plane of the taking and placing opening changes gently, so as to avoid excessive extrusion of the second side edge N on the door seal.

[0172] According to the characteristics of the above-mentioned trajectory, during the opening process of the door body 30, the door body 30 will not extrude the cabinet 10, nor will it excessively exceed the side of the cabinet 10, and the movement is smooth.

[0173] In addition, it should be noted that the setting range of each angle involved above is only one implementable range; the relative movement in the present application is not limited by the specific range of each angle.

[0174] In some embodiments of the present application, referring to Figures 21 to 27 , the door body 30 comprises a mounting block 80, which is installed on the door body 30 at a position opposite to the hinge plate 40, and the guide groove 6 is formed on the mounting block 80. In the present embodiment, the end of the hinge away from the first body side wall is provided with a first matching part, and the mounting block 80 has a second matching part for cooperating with the first matching part to realize locking and unlocking of the door body 30 and the cabinet 10.

[0175] Specifically referring to Figures 21-24 , wherein, Figure 21 and Figure 22 are the cooperation schematic diagram of the door end cover provided on the upper end of the door body and the mounting block; Figure 23 and Figure 24 are the exploded structural schematic diagram of the door end cover provided on the lower end of the door body and the mounting block;

[0176] The mounting block 80 provided at the lower end of the door body 30 is taken as an example for illustration in this embodiment. Figures 21-22 As shown in Figs. 1 and 2, the mounting block 80 is provided with a guide slot 6. Figure 23 As shown in Figs. 1 and 2, the mounting block 80 is provided with a guide slot 6. Figure 24 The door body 30 includes a door end cover 38 provided at the end of the door body 30 close to the hinge. The door end cover 38 is provided with a mounting slot 34 for fixing the mounting block 80. As an implementable manner, the mounting block 80 is mounted in the mounting slot 34, and then the mounting block 80 is fastened and connected with the door body 30 by the first fixing member. Specifically, the first fixing member can be a screw or the like.

[0177] In this embodiment, the bottom of the mounting slot 34 has a recess 39, and the recess 39 is polygonal. The end of the door shaft 7 away from the hinge has a fixing block 70, which is consistent with the formation of the recess 39 and is mounted in the recess 39. The outer circumferential wall of the fixing block 70 cooperates with the inner circumferential wall of the recess 39 to effectively limit the relative rotation of the fixing block 70 and the recess 39. The mounting block 80 has a through hole 64 penetrating the guide slot 6, and the door shaft 7 penetrates the through hole 64 and extends into the guide slot 6. In the above, the fixing block 70 is clamped between the door end cover 38 and the mounting block 80 to effectively limit the movement of the fixing block 70 and the door shaft 7 along the axis direction of the door shaft 7. The above arrangement, the door end cover 38, the door shaft 7 and the mounting block 80 are separately arranged, which is convenient for processing. Through the above matching arrangement, effective fixing is realized to ensure the connection firmness of the whole structure.

[0178] As an implementable manner, the mounting block 80 includes a plate body 81 which is arranged around the outer circumferential wall of the guide slot 6. In this embodiment, the screw for connecting the mounting block 80 and the mounting slot 34 is fixed to the side of the plate body 81 away from the door side wall 32, i.e. the screw fixing position is located on the side of the fixing position (through hole 64) of the door shaft 7 away from the door side wall 32, which effectively increases the connection firmness of the mounting block 80 and the door body 30.

[0179] The bottom wall of the mounting slot 34 close to the door side wall 32 is provided with a receiving cavity 35, and the guide slot 6 is at least partially received in the receiving cavity 35. The plate body 81 cooperates with the bottom wall of the mounting slot 34 to effectively limit the position of the guide slot 6. In this embodiment, the slot bottom 60 of the guide slot 6 cooperates with the cavity bottom of the receiving cavity 35 and is connected by the second fixing member. In this embodiment, three second fixing members are provided, which form a quadrilateral top corner with the door shaft 7 to increase the connection firmness of the guide slot 6 and the door end cover 38.

[0180] In some embodiments of this application, the second mating portion on the mounting block 80 is configured as a locking structure. Specifically, the second mating portion includes a locking hook 82 located on the side of the plate 81 away from the door sidewall 32. The locking hook 82 extends away from the door sidewall 32 and bends towards the side close to the door rear wall 33 and the door sidewall 32. The opening of the locking hook 82 faces the plate 81 (the opening of the locking hook 82 faces the door sidewall 32), and the free end of the locking hook 82 is located on the side close to the door rear wall 33.

[0181] A first mating part located on the side of the hinge plate 40 away from the first body sidewall is provided as a stop part 403, and a hook gap 404 is formed on the side of the stop part 403 near the cabinet 10. When the door 30 is in the closed state, the free end of the lock hook 82 is received in the hook gap 404, the stop part 403 is located in the lock hook 82, and the lock hook 82 on the door 30 hooks the stop part 403 on the hinge plate 40, thereby locking the door 30 and preventing the door 30 from not closing tightly and affecting the refrigeration and freezing effect of the refrigerator; when the door 30 is opened, the lock hook 82 is deformed by force and overcomes the obstruction of the stop part 403, thereby disengaging from the stop part 403.

[0182] The locking hook 82 may include a root joint 83 and a hook portion 84. The root joint 83 is connected to the plate 81, and the hook portion 84 is connected to the root joint 83 and bends towards the side closer to the rear wall 33 and the side wall 32 of the door. A screw passes through the root joint 83 and connects to the door body 30 to strengthen the connection between the root joint 83 and the door body 30, so that only the hook portion 84 deforms when the locking hook 82 disengages from the stop portion 403.

[0183] The free ends of both the hook part 84 and the stop part 403 are arc-shaped, which facilitates the hook part 84 to smoothly hook onto or disengage from the stop part 403 along the arc.

[0184] like Figures 25-27 As shown, when the door 30 is closed from the open state, as the door 30 rotates to close, the free end of the hook part 84 gradually approaches the stop part 403. When the hook part 84 and the stop part 403 come into contact, the door 30 continues to close. Under the action of the stop part 403, the hook part 84 deforms, the stop part 403 enters the hook part 84, and the free end of the hook part 84 enters the hook gap 404; the lock hook 82 locks with the hinge plate 40, thereby locking the door 30 and the box 10.

[0185] The door body 30 is opened from the closed state, and the process is opposite to that of the door body 30 being closed, which will not be described herein. When the door body 30 is closed to an angle less than a set angle (7° in the embodiment), the door body 30 is automatically closed under the action of the hooking portion 84 and the stop portion 403. As an implementable manner, when the door body 30 is opened to a set unlocking angle (5°-8° in the embodiment), the hooking portion 84 is separated from the stop portion 403. As a settable manner, the unlocking angle is set as G1, and when the door body 30 is opened to G1, the hooking portion 84 is separated from the stop portion 403 when the first hinge shaft 41 moves relative to the first guide segment K1. The above setting is that, in the initial opening of the door body 30, the rotation movement is mainly used, and the inward displacement compensation is small, which facilitates the quick separation of the locking hook 82 and the stop portion 403 and facilitates the quick opening of the door body 30. Corresponding to the process that the door body 30 is opened from the closed state to the second angle G2, the second hinge shaft 42 is separated from the guide groove 6, which effectively avoids the jamming and facilitates the quick separation of the locking hook 82 and the stop portion 403.

[0186] In some embodiments, the door body 30 can be provided with a first protrusion 36, and a gap groove 37 is formed between the first protrusion 36 and the groove wall of the mounting groove 34. The root connecting portion 83 is provided with a plug-in plate which is plugged into the gap groove 37. In this way, the deformation of the root connecting portion 83 in the direction from the door front wall 31 to the door rear wall 33 can be avoided by the limiting of the first protrusion 36 and the groove wall of the mounting groove 34. In the embodiment, the screw fixing position is located at the cooperation position of the first protrusion 36 and the root connecting portion 83, that is, the first fixing member passes through the root connecting portion 83 and the first protrusion 36 to fix the mounting block 80 and the door end cover 38.

[0187] Specifically, the plug-in plate is provided in an arc shape, the first protrusion 36 is in a cylindrical shape, the plug-in plate in the arc shape cooperates with the outer peripheral wall of the first protrusion 36, and is at least partially located in the gap groove 37. The above arc-shaped setting increases the limiting area of the gap groove 37 to the root connecting portion 83, increases the connection strength of the mounting block 80 and the door body 30, and effectively limits the deformation of the root connecting portion 83.

[0188] As an implementable manner, as shown in FIGS. Figure 21 and Figure 22 The mounting block 80 at the upper end of the door body 30 has a portion provided with only the guide groove 6 and does not include a locking structure. Correspondingly, when the structure of the mounting block 80 is changed, the mounting groove 34 provided on the door body 30 is adapted to the mounting block 80 to accommodate and fix the mounting block 80.

[0189] The mounting block 80 can be made of POM material, which has strong friction resistance and can improve the service life of the hinge. In addition, in the present embodiment, the positioning groove 5 and the locking structure are integrally formed to form the mounting block 80, which increases the structural precision and the integrity and strength of the mounting block 80. The mounting block 80 can be integrally formed by injection molding.

[0190] In some embodiments of the present application, a limiting structure is provided between the door body 30 and the hinge plate 40 to limit the opening of the door body 30 to a maximum angle, so as to avoid damage to the mounting block 80 when the door is opened to a certain angle.

[0191] Specifically, referring to Figure 23 , the lower end of the door body 30 is provided with a limiting part 85, which is located at the front end of the mounting block 80 provided at the lower end of the door body 30; the hinge plate 40 is formed with a limiting surface at the end away from the cabinet 10 and close to the first side wall. When the door body 30 is rotated to the maximum allowable position (the opening angle G max of the door body 30), the limiting part 85 abuts against the limiting surface of the hinge plate 40, thereby stopping the rotation of the door body 30.

[0192] In the present embodiment, the limiting part 85 includes an embedded part 86 and a limiting strip 87. The limiting part 85 can be a sheet metal part.

[0193] The embedded part 86 is plate-shaped and is installed in the mounting groove 34 at the lower end of the door body 30. The plate body 81 of the mounting block 80 clamps the embedded part 86 on the door body 30 from the lower end, thereby fixing the limiting part 85 on the door body 30.

[0194] The limiting strip 87 is convex strip-shaped and extends downward from the edge of the embedded part 86 close to the door front wall 31 to form a lower surface of the door body 30, so that when the door body 30 rotates to the maximum angle with the limiting part 85, the limiting strip 87 is blocked by the limiting surface of the hinge plate 40, thereby forcing the door body 30 to stop opening.

[0195] The limiting part 85 is clamped on the door body 30 by the mounting block 80, and the connecting structure between the limiting part 85 and the door body 30 is omitted, thereby simplifying the product structure and having the advantage of simple structure.

[0196] It should be noted that the limiting part 85 can also be provided at the upper end of the door body 30, which will not be described here.

[0197] In some other embodiments of the present application, the bottom wall of the guide groove 6 formed on the mounting block 80 is provided with a shaft sleeve, the door shaft 7 is installed in the shaft sleeve, the shaft sleeve cooperates with the positioning groove 5 on the hinge plate to avoid wearing the door shaft 7; and after the shaft sleeve is damaged, the mounting block 80 provided with the shaft sleeve can be replaced for maintenance, which is convenient for maintenance. As an implementable way, the mounting block 80 and the shaft sleeve are integrally formed, which effectively increases the connection strength and the integrity between each other, improves the structural strength of the mounting block 80, and effectively ensures the service life thereof.

[0198] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A refrigerator, characterized in that, It includes: The container defines a storage compartment with an access opening and has a first body sidewall and a second body sidewall 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 first hinge shaft, a second hinge shaft, and a positioning groove that is curved and whose distance from the plane where the pick-up and put-out opening is located gradually increases along the direction from the side wall of the first body to the side wall of the second body. A door body having a front wall away from the housing when the door body is closed, and a side wall near the hinge and connected to the front wall; the end of the door body near the hinge is provided with: The mounting block is integrally formed and detachably connected to the door body; the mounting block has an annular guide groove and a through hole surrounded by the guide groove; The door hinge has a fixing block at its bottom that is clamped between the door body and the mounting block, and the door hinge passes through the through hole and cooperates with the positioning groove; The door is opened from the closed state to its maximum angle G. max During the process, the first hinge shaft and the second hinge shaft move relative to the guide groove, and at least one of them contacts and engages with the guide groove; the door hinge moves relative to the positioning groove, so that the door body can move inward and forward a certain distance while rotating; The front wall of the door intersects with the side wall of the door to form a first side edge W; the plane where the retrieval opening is located is denoted as the second reference plane M2; when the door is closed, the side of the first side edge W away from the retrieval opening is provided with a first reference plane M1 that is perpendicular to the second reference plane M2, and the first reference plane M1 and the second reference plane M2 remain stationary relative to the box during the opening process of the door relative to the box. During the opening of the door, the first side edge W is located on the side of the first reference plane M1 that is close to the side wall of the first body; During the process of the door opening from the first angle G1 relative to the box to the third angle G3, the change in distance between the first side edge W and the first reference plane M1 for each unit angle the door opens is denoted as ξ1. The door opens from the third angle G3 relative to the box to the maximum angle G. max During the process, the change in distance between the first side edge W and the first reference plane M1 for each unit angle the door opens is recorded as ξ2; G max >G3>G1, ξ1 and ξ2 are both positive numbers; where ξ1<ξ2.

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

3. The refrigerator according to claim 2, characterized in that: The bottom of the door hinge is provided with a fixing block that is clamped between the door body and the mounting block; a recess is formed on the bottom wall of the receiving cavity to cooperate with the fixing block, and the inner side wall of the recess cooperates with the outer peripheral wall of the fixing block.

4. The refrigerator according to any one of claims 1-3, characterized in that: The axis passing through the centroid of the cross section of the first hinge axis is denoted as the first centroidal axis P0; the axis passing through the centroid of the cross section of the second hinge axis is denoted as the second centroidal axis Q0; Within the projection of the top wall of the box, the straight line containing the first centroidal axis P0 and the second centroidal axis Q0 is denoted as the first straight line Q0P0; wherein, the first straight line Q0P0 is parallel to the plane containing the pick-up and drop-off port.

5. The refrigerator according to claim 4, characterized in that: The center trajectory line of the positioning groove is denoted as positioning trajectory line S, which includes the starting positioning point I0 near the door side wall and the ending positioning point I0 away from the door side wall. e ; Starting positioning point I0 and ending positioning point I e The line containing this line is denoted as the second line I0I. e The positioning trajectory line S is located on the second straight line I0I. e The side closest to the pick-and-place port.

6. The refrigerator according to claim 1, 2, 3, or 5, characterized in that: The first hinge shaft is located on the side of the positioning groove closer to the side wall of the first body; the second hinge shaft is located on the side of the positioning groove away from the side wall of the first body; both the first hinge shaft and the second hinge shaft are cylindrical shafts.

7. The refrigerator according to claim 1, 2, 3, or 5, characterized in that: The inner wall of the guide groove defines a guide trajectory line K, and the centroid of the guide trajectory line K is denoted as the guide centroid O. The guide trajectory line K includes a first guide segment K1, a second guide segment K2, a third guide segment K3, a fourth guide segment K4, and a fifth guide segment K5 that are connected end to end and all protrude toward the side away from the guide centroid O. The connection point between the fifth guide segment K5 and the first guide segment K1 is denoted as the first inflection point A, and the connection points between the first guide segment K1, the second guide segment K2, the third guide segment K3, the fourth guide segment K4 and the fifth guide segment K5 are denoted as the second inflection point B, the third inflection point C, the fourth inflection point D and the fifth inflection point E, respectively. The second inflection point B, the first inflection point A, the fifth inflection point E, the third inflection point C, and the fourth inflection point D are successively moved away from the side wall of the door; The fifth inflection point E, the first inflection point A, the fourth inflection point D, the second inflection point B, and the third inflection point C are successively located near the front wall of the door.

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

9. The refrigerator according to claim 1, 2, 3, 5, or 8, characterized in that: During the process of the door opening from the closed state to the second angle G2, the distance the door moves inward for each unit angle of opening is recorded as δ1; During the process of the door opening from the second angle G2 to the third angle G3, the distance the door moves inward by each unit angle of opening is denoted as δ2; where G3 > G2 > 0°, δ1 > δ2.

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