Refrigerator body assembly and refrigerator

Abstract

The present application relates to a refrigerator body assembly and a refrigerator. The refrigerator body assembly comprises a refrigerator body and a door body, wherein the door body comprises a first side surface, a second side surface and a third side surface; the first side surface and the third side surface intersect to form a first edge extending in a third direction, and the second side surface and the third side surface intersect to form a second edge extending in the third direction; the first edge is configured to move following the movement of the door body from a fully closed state to a fully open state, thereby forming a first trajectory which does not exceed a first reference plane; the second edge is configured to move following the movement of the door body from the fully closed state to the fully open state, thereby forming a second trajectory which does not exceed a second reference plane, the first reference plane being located between the refrigerator body and the door body, the distance between the first reference plane and the refrigerator body being 12% T to 25% T, the second reference plane being located on an outer side of the refrigerator body, and the distance between the second reference plane and the refrigerator body being less than 1% T. The door body can be opened smoothly even when the gap between the refrigerator body and the surroundings, such as a wall, is close to zero.

Description

Box assembly and refrigerator

[0001] The present application claims priority from Chinese Patent Application No. 202410806387.3, filed on June 21, 2024, and entitled "Box assembly and refrigerator". TECHNICAL FIELD

[0002] The present application relates to the field of refrigeration technology, and in particular to a box assembly and a refrigerator. BACKGROUND

[0003] The door body is one of the important components in the refrigerator system, which is mainly used to open or close the access port, and can also store food, set touch, display device, etc. Normally, the door body and the box body are fixed together by hinges, and the door body can rotate around the hinge shaft. In some cases, the refrigerator is placed in the corner of the wall, and a certain distance between the refrigerator and the wall is required to ensure that the door body can be opened and the opening angle is greater than 90°. In order to save space, the embedded refrigerator is one of the main development trends in the future. However, for the embedded refrigerator, the traditional hinge mechanism cannot be used to better open the refrigerator door. SUMMARY

[0004] Some embodiments of the present application provide a box assembly and a refrigerator, which can better open the door body when the distance between the box body and the surrounding environment such as the wall is close to zero.

[0005] In one aspect of the present application, a box assembly is provided, comprising:

[0006] a box body; and

[0007] A door body is rotatably connected to the cabinet, and the door body includes a first side, a second side, and a third side. The first side is opposite to the second side and adjacent to the cabinet. The first side and the third side intersect to form a first edge extending in a third direction. The second side and the third side intersect to form a second edge extending in the third direction. When the door body moves from a fully closed state to a fully open state, a movement track of the first edge forms a first track line, and a movement track of the second edge forms a second track line. The first track line does not exceed a first reference plane, and the second track line does not exceed a second reference plane. The first reference plane is located between the cabinet and the door body, is parallel to a first direction, and is 12%T-25%T away from the cabinet. The second reference plane is located outside the cabinet, is parallel to a second direction, and is less than 1%T away from the cabinet. T is a distance between the first edge and the second edge. The first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the third direction. The third direction is a height direction of the cabinet.

[0008] In some embodiments, a position of the first edge on the first track line in the fully closed state of the door body is an A1 point, and the A1 point is 16%T-25%T away from the cabinet.

[0009] In some embodiments, a straight line distance nA5 between an A5 point and an n point is 27%T-56%T. The A5 point is a position of the first edge on the first track line in the fully open state of the door body, and the n point is an intersection of the second side in the fully closed state of the door body and the first side in the fully open state of the door body.

[0010] In some embodiments, a straight line distance mB1 between an m point and a B1 point is less than 0.07%T. The B1 point is a position of the second edge on the second track line in the fully closed state of the door body, and the m point is an intersection of the second side in the fully closed state of the door body and the second side in the fully open state of the door body.

[0011] In some embodiments, the first track line is tangent to the first reference plane, and a tangent point is an A2 point. When an opening angle of the door body is 8°-20°, the first edge is located at the A2 point.

[0012] In some embodiments, when the opening angle of the door body is 20°-40°, the first edge is located at an A3 point on the first trajectory line, and the A3 point is the intersection point of the first trajectory line and the first side surface in the fully closed state of the door body.

[0013] In some embodiments, when the opening angle of the door body is 90°, the first edge is located at an A4 point on the first trajectory line, and the straight line distance KA4 between the A4 point and a K point is greater than the straight line distance nA5, and the K point is the intersection point of the second side surface in the fully closed state of the door body and the first side surface when the opening angle of the door body is 90°.

[0014] In some embodiments, the straight line distance FB1 between the B1 point and an F point is greater than the straight line distance mB1, and the F point is the intersection point of the second side surface in the fully closed state of the door body and the second side surface when the opening angle of the door body is 90°.

[0015] In some embodiments, the projection length of the line connecting the A3 point and the A4 point in the second direction accounts for 60%-65% of the projection length of the line connecting the A3 point and an A5 point in the second direction, the A4 point is the position of the first edge on the first trajectory line when the opening angle of the door body is 90°, and the A5 point is the position of the first edge on the first trajectory line in the fully open state of the door body.

[0016] In some embodiments, the distance between the first trajectory line and the second reference plane increases with the increase of the opening angle of the door body, and the distance between the first trajectory line and the cabinet first decreases and then increases with the increase of the opening angle of the door body.

[0017] In some embodiments, the first trajectory line comprises sequentially connected first, second and third arc segments formed from the fully closed state to the fully open state of the door body, the first arc segment is configured as a form of a quadratic function curve protruding towards the cabinet, and the second and third arc segments are both configured as circular arc segments.

[0018] In some embodiments, the first arc segment is an arc segment from an A1 point to an A3 point, the second arc segment is an arc segment from the A3 point to an A4 point, and the third arc segment is an arc segment from the A4 point to an A5 point, wherein the A1 point is the position of the first edge on the first trajectory line in the fully closed state of the door body.

[0019] The A1 point is the position of the first edge on the first trajectory line in the fully closed state of the door body.

[0020] The A3 point is the position of the first edge on the first trajectory line when the opening angle of the door body is 20°-40°.

[0021] The A4 point is a position of the first edge on the first trajectory line when the door body opening angle is 90°;

[0022] The A5 point is a position of the first edge on the first trajectory line in the fully open state of the door body.

[0023] In some embodiments, the curvature of the second arc segment is greater than the curvature of the third arc segment, and the arc length of the second arc segment is greater than the arc length of the third arc segment.

[0024] In some embodiments, the box assembly further comprises a shaft assembly and a trajectory slot group, the shaft assembly is arranged at one of the door body and the box, the trajectory slot group is arranged at the other one of the door body and the box, the shaft assembly comprises a first shaft and a second shaft, the trajectory slot group comprises a first slot and a second slot, the first shaft is configured to move in the first slot relative to the first slot with the opening and closing of the door body, and the second shaft is configured to move in the second slot relative to the second slot with the opening and closing of the door body.

[0025] In some embodiments, the arrangement area of the shaft assembly is within a quadrilateral nA5B5m formed by sequentially connecting the n point, the A5 point, the B5 point and the m point; wherein the n point is the intersection of the second side surface in the fully closed state of the door body and the first side surface in the fully open state of the door body; the A5 point is the position of the first edge on the first trajectory line in the fully open state of the door body; the B5 point is the position of the second edge on the second trajectory line in the fully open state of the door body; and the m point is the intersection of the second side surface in the fully closed state of the door body and the second side surface in the fully open state of the door body.

[0026] In some embodiments, the arrangement area of the shaft assembly is within a quadrilateral cdgh formed by sequentially connecting the c point, the d point, the g point and the h point, wherein,

[0027] The line cd connecting the c point and the d point is parallel to the line nm connecting the n point and the m point, and the line cd is offset to the inside of the quadrilateral nA5B5m by 7t-9.5t relative to the line nm;

[0028] The line gd connecting the d point and the g point is parallel to the line mB5 connecting the m point and the B5 point, and the line gd is offset to the inside of the quadrilateral nA5B5m by 4t-6.5t relative to the line mB5;

[0029] A line ch connecting the c point and the h point is parallel to a line nA5 connecting the A5 point and the n point, and the line ch is offset by 2t to 3t to an inner side of the quadrangle nA5B5m relative to the line nA5;

[0030] A line ch connecting the c point and the h point is parallel to a line nA5 connecting the A5 point and the n point, and the line ch is offset by 2t to 3t to an inner side of the quadrangle nA5B5m relative to the line nA5;

[0031] 0.9≤t≤1.1, and T=50t.

[0032] In some embodiments, an axis of the first shaft is located in a triangular region Q1Q6Q7 formed by sequentially connecting the Q1 point, the Q6 point and the Q7 point, and an axis of the second shaft is located in a quadrangular region Q2Q3Q5Q4 formed by sequentially connecting the Q2 point, the Q3 point, the Q5 point and the Q4 point.

[0033] The Q1 point is a center of a first circle, the first circle is a circle that is tangent to the line cd and the line hg and has a radius R1 within the quadrangle cdgh.

[0034] The Q2 point is on a circular arc of an eighth circle with the Q1 point as a center and S as a radius, the Q2 point is a center of a second circle, the second circle is a circle that is tangent to the line hg and has a radius R2 within the quadrangle cdgh.

[0035] The Q3 point is on the circular arc of the eighth circle, the Q3 point is a center of a third circle, the third circle is a circle that is tangent to the line cd and has a radius R2 within the quadrangle cdgh.

[0036] The Q4 point is a center of a fourth circle, the fourth circle is a circle that is tangent to the line hg and the line gd and has a radius R2 within the quadrangle cdgh.

[0037] The Q5 point is a center of a fifth circle, the fifth circle is a circle that is tangent to the line cd and the line gd and has a radius R2 within the quadrangle cdgh.

[0038] The Q6 point is on a circular arc of a ninth circle with the Q4 point as a center and S as a radius, the Q6 point is a center of a sixth circle, the sixth circle is a circle that is tangent to the line hg and has a radius R1 within the quadrangle cdgh.

[0039] The Q7 point is on a circular arc of a tenth circle with the Q5 point as the center and S as the radius, the Q7 point is the center of a seventh circle, and the seventh circle is a circle inside the quadrilateral cdgh, tangent to the line cd, and with a radius of R1;

[0040] The R1 is the radius of the first shaft, the R2 is the radius of the second shaft, the S is the distance between the center of the first shaft and the center of the second shaft, and the S is selected according to the first groove and the second groove not intersecting.

[0041] In some embodiments, the coordinates of any point A'(x1', y1') on the first groove in the xy rectangular coordinate system satisfy the following relationship:

[0042] The xy rectangular coordinate system is established with the intersection of the second side and the third side of the door body in the fully closed state as the origin, the first direction as the positive direction of the x axis, and the second direction as the positive direction of the y axis.

[0043] θ is the opening angle of the door body.

[0044] ax is the x coordinate of the center of the first shaft in the xy rectangular coordinate system.

[0045] ay is the y coordinate of the center of the first shaft in the xy rectangular coordinate system.

[0046] x1 is the x coordinate of any point on the first trajectory line in the xy rectangular coordinate system, and y1 is the y coordinate of any point on the first trajectory line in the xy rectangular coordinate system.

[0047] x2 is the x coordinate of any point on the second trajectory line in the xy rectangular coordinate system, and y2 is the y coordinate of any point on the second trajectory line in the xy rectangular coordinate system.

[0048] In some embodiments, the coordinates of any point B'(x2', y2') on the second groove in the xy rectangular coordinate system satisfy the following relationship:

[0049] The xy rectangular coordinate system is established with the intersection of the second side and the third side of the door body in the fully closed state as the origin, the first direction as the positive direction of the x axis, and the second direction as the positive direction of the y axis.

[0050] θ is the opening angle of the door body.

[0051] bx is the x coordinate of the center of the second shaft in the xy rectangular coordinate system.

[0052] by is a y coordinate of an axis center of the second shaft in the xy rectangular coordinate system;

[0053] x1 is an x coordinate of any point on the first trajectory line in the xy rectangular coordinate system, and y1 is a y coordinate of any point on the first trajectory line in the xy rectangular coordinate system;

[0054] x2 is an x coordinate of any point on the second trajectory line in the xy rectangular coordinate system, and y2 is a y coordinate of any point on the second trajectory line in the xy rectangular coordinate system.

[0055] In another aspect of the present application, a refrigerator is provided, comprising the above-mentioned cabinet assembly.

[0056] Based on the above technical solution, the present application has at least the following beneficial effects:

[0057] Based on the thickness of the door body, the distance between the first reference plane and the cabinet is set, and the distance between the second reference plane and the cabinet is set, which can flexibly adjust the positions of the first reference plane and the second reference plane according to different specifications of the door body. In the case that the distance between the cabinet and the surrounding wall or cabinet is close to zero, the door body can first move towards the cabinet for a certain distance, and then move away from the cabinet to open, achieving better opening of the door body, preventing interference between the door body and the wall or cabinet during opening and closing, and preventing excessive extrusion and wear of the sealing element provided on the door body, thereby improving the service life of the sealing element. BRIEF DESCRIPTION OF DRAWINGS

[0058] The accompanying drawings, which are included to provide a further understanding of the present application, form a part of the present application and illustrate the illustrative embodiments of the present application and the explanation of the present application, and do not constitute improper limitations on the present application. In the drawings:

[0059] FIG. 1 is a schematic view of a cabinet assembly according to some embodiments of the present application;

[0060] FIG. 2 is a schematic view of a rotating connection part according to some embodiments of the present application;

[0061] FIG. 3 is a schematic view of a shaft slot assembly according to some embodiments of the present application;

[0062] FIG. 4 is a simplified schematic view of a rotating connection part of a door body in a fully closed state according to some embodiments of the present application;

[0063] FIG. 5 is a simplified schematic view of a door body in an open first angle state according to some embodiments of the present application;

[0064] FIG. 6 is a simplified schematic view of a door body in an open second angle state according to some embodiments of the present application;

[0065] FIG. 7 is a simplified schematic diagram of a door body in a third angle of opening according to some embodiments of the present application;

[0066] FIG. 8 is a simplified schematic diagram of a door body in a fourth angle of opening according to some embodiments of the present application;

[0067] FIG. 9 is a schematic diagram of a position area of a first shaft and a second shaft according to some embodiments of the present application;

[0068] FIG. 10 is a simplified schematic diagram of a shaft and a track slot in different coordinate systems according to some embodiments of the present application.

[0069] Reference signs in the drawings are explained as follows: 10, cabinet; 101, taking and placing side; 102, outer side; 20, door body; 201, first side; 202, second side; 203, third side; 204, first track line; 205, second track line; 21, first edge; 22, second edge; 30a, hinge; 30, shaft assembly; 31, first shaft; 32, second shaft; 40a, slot plate; 40, track slot group; 41, first slot; 42, second slot; 50, wall body; 501, front of wall body; 61, first circle; 62, second circle; 63, third circle; 64, fourth circle; 65, fifth circle; 66, sixth circle; 67, seventh circle; 68, eighth circle; 69, ninth circle; 70, tenth circle.

[0070] It should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale. Furthermore, like or similar reference numerals are intended to represent like or similar parts. DETAILED DESCRIPTION

[0071] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely intended to illustrate the present application and is not intended to limit the scope of the present application in any way. The present application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art. It should be noted that the relative arrangement of the components and steps set forth in these embodiments, the components of the materials, numerical expressions, and numerical values are to be interpreted as merely exemplary, and not as a limitation unless otherwise specifically stated.

[0072] The terms "first", "second", and similar terms in the present application do not denote any order, quantity, or importance, but are used to distinguish different parts. The terms "include", "contain", and similar terms mean that the elements before the terms encompass the elements listed after the terms, and do not exclude the possibility of also encompassing other elements. The terms "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.

[0073] In the present application, when it is described that a specific device is located between a first device and a second device, there can be an intervening device between the specific device and the first device or the second device, or there can be no intervening device. When it is described that a specific device is connected to another device, the specific device can be directly connected to the other device without an intervening device, or can not be directly connected to the other device with an intervening device.

[0074] All terms used in the present application, including technical terms or scientific terms, have the same meanings as those understood by a person of ordinary skill in the art to which the present application pertains, unless otherwise specifically defined. It should also be understood that terms defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically so defined herein.

[0075] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification, where appropriate.

[0076] FIG. 1 is a structural schematic diagram of a box assembly according to some embodiments of the present application. Referring to FIG. 1, in some embodiments, the box assembly includes a box 10 and a door body 20.

[0077] The box 10 has a taking and placing opening, and the door body 20 is arranged at the taking and placing opening.

[0078] The door body 20 is rotationally connected to the box 10.

[0079] The rotationally connected side of the door body 20 and the box 10 includes a first edge 21 and a second edge 22 extending along a third direction Z.

[0080] The third direction Z is parallel to the height direction of the box 10 and the height direction of the door body 20. The third direction Z is perpendicular to the first direction X, the third direction Z is perpendicular to the second direction Y, and the first direction X is perpendicular to the second direction Y. The second direction Y is parallel to the depth direction of the box 10, and the second direction Y is parallel to the thickness direction of the door body 20. The first direction X is parallel to the width direction of the box 10 and the width direction of the door body 20.

[0081] In the embodiment shown in FIG. 1, the cabinet 10 is provided with two groups of door bodies 20 spaced apart along the third direction Z, and each group of door bodies 20 includes two door bodies 20 arranged side by side along the first direction X.

[0082] Referring to FIG. 2, in some embodiments, the door body 20 is rotationally connected with the cabinet 10 through a hinge structure. The hinge structure includes a hinge 30a provided on one of the door body 20 and the cabinet 10, and a slot plate 40a provided on the other one of the door body 20 and the cabinet 10.

[0083] In the embodiment shown in FIG. 2, the hinge 30a is provided on one side of the cabinet 10 in the first direction X and at the top of the cabinet 10, and the slot plate 40a is provided on one side of the door body 20 in the first direction X and at the top of the door body 20.

[0084] Referring to FIG. 3, in some embodiments, the hinge 30a includes a shaft assembly 30 including a first shaft 31 and a second shaft 32, and the slot plate 40a is provided with a track slot group 40 including a first slot 41 and a second slot 42. The first shaft 31 is configured to move within the first slot 41 relative to the first slot 41 with the opening and closing of the door body 20, and the second shaft 32 is configured to move within the second slot 42 relative to the second slot 42 with the opening and closing of the door body 20.

[0085] In the embodiment shown in FIG. 3, the first shaft 31 and the second shaft 32 are provided on the cabinet 10, and the first slot 41 and the second slot 42 are provided on the door body 20. During the opening of the door body 20 relative to the cabinet 10, the first shaft 31 and the second shaft 32 are stationary, and the first slot 41 and the second slot 42 move with the door body 20. The first shaft 31 moves within the first slot 41 relative to the first slot 41. The second shaft 32 moves within the second slot 42 relative to the second slot 42.

[0086] Referring to FIG. 4, the cabinet 10 is provided with a taking and placing opening, and the side where the taking and placing opening is located is a taking and placing opening side 101, which is also the front side of the cabinet 10, and the taking and placing opening side 101 extends in the first direction X and the third direction Z. The cabinet 10 further includes an outer side 102 connected with the taking and placing opening side 101, which is the side adjacent to the surrounding installation environment. The outer side 102 extends in the second direction Y and the third direction Z.

[0087] The door body 20 includes a first side 201, a second side 202, and a third side 203. The first side 201 is arranged opposite to the second side 202, and the first side 201 is adjacent to the cabinet 10 relative to the second side 202. The third side 203 is close to the part where the door body 20 is rotationally connected with the cabinet 10.

[0088] The first side surface 201 is a back surface of the door body 20, adjacent to the taking and placing opening side 101 of the cabinet 10. The first side surface 201 extends in the first direction X and the third direction Z. The second side surface 202 is a front surface of the door body 20, and the second side surface 202 extends in the first direction X and the third direction Z. The third side surface 203 is a surface of the door body 20 adjacent to the surrounding installation environment. The third side surface 203 extends in the second direction Y and the third direction Z.

[0089] The surrounding installation environment here can include a wall 50, and can also include a cabinet body, etc.

[0090] The first side surface 201 and the third side surface 203 intersect to form a first edge 21 extending in the third direction Z.

[0091] The second side surface 202 and the third side surface 203 intersect to form a second edge 22 extending in the third direction Z. The second edge 22 is away from the cabinet 10 relative to the first edge 21.

[0092] FIG. 4 is a partial top view of the cabinet 10 and the door body 20. The first edge 21 coincides with the A1 point in the top view shown in FIG. 4, and the second edge 22 coincides with the B1 point in the top view shown in FIG. 4.

[0093] The first edge 21 is configured to move with the door body 20 from the fully closed state to the fully open state to form a first trajectory line 204, and the first trajectory line 204 does not exceed a first reference plane F1 in the second direction Y.

[0094] The second edge 22 is configured to move with the door body 20 from the fully closed state to the fully open state to form a second trajectory line 205, and the second trajectory line 205 does not exceed a second reference plane F2 in the first direction X.

[0095] The first reference plane F1 is located between the cabinet 10 and the door body 20, the first reference plane F1 is parallel to the first direction X, and the distance between the first reference plane F1 and the cabinet 10 is 12%T-25%T.

[0096] The second reference plane F2 is located on the outside of the cabinet 10, adjacent to the side of the cabinet 10 and the door body 20 connected to rotate. The second reference plane F2 is parallel to the second direction Y, and the distance between the second reference plane F2 and the cabinet 10 is less than 1%T.

[0097] T is the distance between the first edge 21 and the second edge 22.

[0098] In some embodiments, T is equal to the thickness of the door body 20. Alternatively, T=50t (mm), where 0.9≤t≤1.1.

[0099] The first direction X is perpendicular to the second direction Y, and both the first direction X and the second direction Y are perpendicular to the third direction Z, which is the height direction of the cabinet 10.

[0100] Since the first side surface 201 of the door body 20 needs to be provided with a sealing member, a predetermined distance needs to be provided between the first side surface 201 of the door body 20 and the taking and placing side 101 of the cabinet 10 to install the sealing member and prevent the cabinet 10 from leaking cold air. In order to save installation space, the distance between the outer side of the cabinet 10 and the surrounding environment is very small, close to zero, for realizing zero-embedded installation of the cabinet 10. Therefore, the door body 20 is set to move a distance in the direction of the cabinet 10 at the initial opening of the door body 20, and the sealing member on the door body 20 is pressed in the direction of the cabinet 10 at this time. If the pressing amount of the sealing member exceeds the compensation amount of the sealing member, the edge of the sealing member will be curled, folded or damaged due to mechanical stress and wear.

[0101] Therefore, in some embodiments, the first edge 21 is set to form a first trajectory line 204 when the door body 20 moves from the fully closed state to the fully open state, and the first trajectory line 204 does not exceed the first reference plane F1 in the second direction Y. The distance between the first reference plane F1 and the cabinet 10 is 12% T to 25% T, and the distance between the first reference plane F1 and the cabinet 10 is set based on the thickness T of the door body 20. The position of the first reference plane F1 can be flexibly adjusted according to different specifications of the door body 20. The door body 20 can be moved a distance in the direction of the cabinet 10 first, and then opened in the direction away from the cabinet 10, to achieve better opening of the door body 20 and prevent interference between the door body 20 and the wall 50 or the cabinet during opening and closing. The sealing member provided on the door body 20 is prevented from being excessively pressed and worn, and the service life of the sealing member is improved. Furthermore, the second edge 22 is set to form a second trajectory line 205 when the door body 20 moves from the fully closed state to the fully open state, and the second trajectory line 205 does not exceed the second reference plane F2 in the first direction X. The distance between the second reference plane F2 and the cabinet 10 is less than 1% T, and the distance between the second reference plane F2 and the cabinet 10 is set based on the thickness T of the door body 20. The position of the second reference plane F2 can be flexibly adjusted according to different specifications of the door body 20, so that the second edge 22 does not exceed the outer side surface 102 of the cabinet 10 during opening and closing of the door body 20, to prevent interference between the second edge 22 and the wall 50 or the cabinet, and to better open the door body 20 when the distance between the door body 20 and the wall 50 or the cabinet is close to zero.

[0102] Referring to FIG. 4, in some embodiments, the first edge 21 is located at the A1 point on the first trajectory line 204 in the fully closed state of the door body 20, and the distance between the A1 point and the cabinet 10 is 16%T-25%T. The A1 point is located on the extension of the outer side surface 102 of the cabinet 10 in the second direction Y.

[0103] In the above embodiments, the distance between the A1 point and the cabinet 10 is set based on the thickness T of the door body 20, which can flexibly adjust the distance between the A1 point and the cabinet 10 according to different specifications of the door body 20, and is suitable for cabinet assemblies of different specifications. The distance between the A1 point and the cabinet 10 is set to 16%T-25%T to define the initial position of the first edge 21 in the fully closed state of the door body 20. The selection of this numerical range can determine the closed position of the door body 20, which is beneficial to the selection and setting of the hinge structure between the door body 20 and the cabinet 10, realizes better rotational connection between the door body 20 and the cabinet 10, and can reserve space for installing a sealing element between the door body 20 and the cabinet 10 to prevent the sealing element from being excessively pressed during the opening and closing of the door body 20. In addition, the distance between the A1 point and the cabinet 10 is set to 16%T-25%T to determine the space utilization of the cabinet 10. The starting position of the door body 20 determines its movement trajectory during the entire opening and closing process, which further affects the availability of the internal space of the cabinet 10 and the layout of the external space. Setting the distance between the A1 point and the cabinet 10 to 16%T-25%T can ensure that the door body 20 does not occupy too much external space during the opening and closing process, making the structure of the cabinet assembly more compact, preventing the door body 20 from interfering with the wall 50 or the cabinet, and achieving better opening and closing.

[0104] Referring to FIG. 5, the door body 20 is opened relative to the cabinet 10 by a first angle. The first angle is optionally 8°-20°.

[0105] Referring to FIG. 6, the door body 20 is opened relative to the cabinet 10 by a second angle. The second angle is greater than the first angle and less than 90°.

[0106] Referring to FIG. 7, the door body 20 is opened relative to the cabinet 10 by a third angle. The third angle is 90°.

[0107] Referring to FIG. 8, the door body 20 is opened relative to the cabinet 10 by a fourth angle. The fourth angle is the fully open angle of the door body 20. The fourth angle is greater than 90° and less than or equal to 110°. Optionally, the fourth angle is 110°.

[0108] Referring to FIG. 8, in the fully open state of the door body 20, the straight-line distance nA5 between the A5 point and the n point is 27%T-56%T, where the A5 point is the position of the first edge 21 on the first trajectory line 204 in the fully open state of the door body 20, and the n point is the intersection of the second side surface 202 in the fully closed state of the door body 20 and the first side surface 201 in the fully open state of the door body 20.

[0109] In the above embodiments, since the larger the value of nA5 is, the more conducive to the installation of the door body 20, but at the same time, the door body 20 will move more towards the cabinet 10 when in motion, thus causing more space inside the cabinet 10 to be occupied, therefore, limiting the straight line distance nA5 between the A5 point and the n point to 27%T-56%T can determine the end position of the opening of the door body 20, so that the opening angle of the door body 20 can be greater than 90°, and without occupying too much space inside the cabinet 10, nor interfering with the wall 50 or the cabinet.

[0110] In some embodiments, the straight line distance mB1 between the m point and the B1 point is less than 0.07%T, wherein the B1 point is the position of the second edge 22 on the second trajectory line 205 in the fully closed state of the door body 20, and the m point is the intersection of the second side surface 202 in the fully closed state of the door body 20 and the second side surface 202 in the fully open state of the door body 20.

[0111] In the above embodiments, the straight line distance mB1 between the m point and the B1 point is less than 0.07%T, which can reserve a safety distance for the second side surface 202 of the door body 20, and provide a larger allowable tolerance range for the door body 20, to prevent the door body 20 from colliding with the wall 50 or the cabinet due to the manufacturing error of the door body 20.

[0112] Referring to FIG. 5, in some embodiments, the first trajectory line 204 is tangent to the first reference plane F1, and the tangent point is the A2 point. The first edge 21 is configured to be located at the A2 point when the opening angle of the door body 20 is 8°-20°.

[0113] Since the distance between the first side surface 201 and the taking and placing side 101 is set to 16%T-25%T, this distance can achieve the setting of the seal, but generally the thickness of the seal itself will be smaller than this distance, which is used as a compensation amount for the seal, i.e. the magnetic strip on the seal has a preset air bag compression amount when attracted to the cabinet 10.

[0114] Therefore, the first side 201 and the third side 203 of the door body 20 are initially set to open, and the angle region formed by the first side 201 and the third side 203 moves a distance in the direction of the box body 10. At this time, the sealing element on the door body 20 is pressed in the direction of the box body 10. If the sealing element is pressed beyond its own sealing element compensation amount, there is a risk that the sealing element will be excessively pressed. Therefore, the position of the second trajectory line 205 closest to the first reference plane F1 is the position tangent to the first reference plane F1, and the tangent point is the A2 point. On the other hand, considering the existence of a door closer (a hook-like part installed on one side of the hinge, which is in contact with the hinge contact part through appropriate interference design, and when the door is closed to a certain angle, the door body 20 can be automatically closed to the position under the action of the door closer) in actual application, the resistance of the door closer needs to be overcome during the opening of the door body 20. The action angle of the door closer and the door body 20 is usually 6°-11°. Therefore, the A2 point is set to a position after the door body 20 is separated from the door closer (i.e., a position where the opening angle of the door body 20 is greater than 8°), which can reduce the opening force. In order to provide sufficient displacement allowance for the movement of the door body 20 after the door body 20, ensure a smooth and easy feeling when opening the door, and meet the requirement that the curvature of the edge trajectory curve is as smooth as possible, the position of the A2 point is not more than the position where the opening angle of the door body 20 is 20°. Therefore, the first edge 21 is configured to be located at the A2 point when the opening angle of the door body 20 is 8°-20°. In this way, it is beneficial to the setting of the sealing element and improves the service life of the sealing element. It is also beneficial to the automatic closing of the door body 20 by the door closer when the door is closed, and can provide displacement allowance for the movement of the door body 20 after the opening angle of the door body 20 is greater than 8°, so that the door can be opened smoothly and easily.

[0115] Referring to FIG. 6, in some embodiments, the first edge 21 is configured to be located at the A3 point on the first trajectory line 204 when the opening angle of the door body 20 is 20°-40°, and the A3 point is the intersection point of the first trajectory line 204 and the first side 201 of the door body 20 in the fully closed state.

[0116] In the above embodiment, after the first edge 21 moves to the A2 point on the first trajectory line 204, in order to ensure that the movement of the door body 20 is smooth and stable, the curvature of the first trajectory line 204 should meet the requirement of uniformity without sudden change as much as possible. Therefore, after the door body 20 leaves the A2 point, it should be smooth and slow until the sealing element leaves the cabinet 10. If the distance between the A3 point corresponding to the position where the sealing element leaves the cabinet 10 and the A2 point is too small, the curve curvature of the A2A3 arc segment between the A2 point and the A3 point will suddenly change and become larger. If the distance between the A3 point corresponding to the position where the sealing element leaves the cabinet 10 and the A2 point is too large, the curve curvature of the A3A5 arc segment between the A3 point and the A5 point will suddenly change and become larger. The larger curve curvature of the A3A5 arc segment will cause the normal acceleration of the door body 20 to become larger, thereby causing the movement of the door body 20 to be not smooth. Therefore, the first edge 21 is configured to, when the opening angle of the door body 20 is 20°-40°, the A3 point falls on the first side surface 201 of the door body 20 in the fully closed state, so that the door body 20 can be smooth, stable and smooth during the opening process along the A2A3 arc segment of the first trajectory line 204 and during the opening process along the A3A5 arc segment.

[0117] Referring to FIG. 7, in some embodiments, the first edge 21 is configured to, when the opening angle of the door body 20 is 90°, be located at the A4 point on the first trajectory line 204, and the straight line distance KA4 between the A4 point and the K point is greater than the straight line distance nA5. The K point is the intersection point of the second side surface 202 of the door body 20 in the fully closed state and the first side surface 201 of the door body 20 when the opening angle is 90°.

[0118] When the opening angle of the door body 20 is 90°, on the one hand, the second side surface 202 should be as close as possible to the extension surface of the outer side surface 102 of the cabinet 10 in the second direction Y, thereby reducing the space required for the internal moving components (such as a drawer) of the cabinet 10 to move outward, and improving the space utilization of the cabinet assembly. On the other hand, it is necessary to ensure that the second side surface 202 has a sufficient gap with the side surface of the wall 50 when the opening angle of the door body 20 is greater than 90°.

[0119] Based on this, the first edge 21 is configured to, when the opening angle of the door body 20 is 90°, be located at the A4 point on the first trajectory line 204, and the straight line distance KA4 between the A4 point and the K point is greater than the straight line distance nA5. This can reduce the space occupied by the internal moving components of the cabinet 10 when moving outward, improve the space utilization of the cabinet assembly, and also enable the second side surface 202 to have a sufficient gap with the side surface of the wall 50 when the opening angle of the door body 20 is greater than 90°.

[0120] Referring to FIG. 7, in some embodiments, the linear distance FB1 between the point B1 and the point F is greater than the linear distance mB1, where the point F is the intersection of the second side surface 202 of the door body 20 in the fully closed state and the second side surface 202 when the opening angle of the door body 20 is 90°.

[0121] In the above embodiments, the intersection of the second side surface 202 of the door body 20 when the opening angle is 90° and the second side surface 202 of the door body 20 in the fully closed state is the point F, and the distance between the point F and the third side surface 203 of the door body 20 in the fully closed state is the linear distance FB1.

[0122] To improve the space utilization of the refrigerator, the linear distance FB1 should be as small as possible, that is, the smaller the distance between the second side surface 202 of the door body 20 when the opening angle is 90° and the extension of the outer side surface 102 of the cabinet 10 in the second direction Y, the less space the door body 20 occupies. Because the second side surface 202 needs to have a gap with the side surface of the wall 50 when the opening angle of the door body 20 is greater than 90° (for example, 90°-110°), that is, the second side surface 202 cannot collide with the side surface of the wall 50, FB1 should be greater than mB1. Therefore, the linear distance FB1 between the point B1 and the point F is greater than the linear distance mB1, which can minimize the space occupied by the door body 20 and prevent the door body 20 from colliding with the wall 50 or the cabinet when the opening angle of the door body 20 is greater than 90°.

[0123] In some embodiments, the projection length of the line segment between the points A3 and A4 in the second direction Y accounts for 60%-65% of the projection length of the line segment between the points A3 and A5 in the second direction Y, where the point A4 is the position of the first edge 21 on the first trajectory line 204 when the opening angle of the door body 20 is 90°, and the point A5 is the position of the first edge 21 on the first trajectory line 204 in the fully open state of the door body 20.

[0124] Since the point A3 is the point at which the sealing member leaves the cabinet 10, the movement of the door body 20 on the arc segment from the point A3 to the point A5 can be regarded as its entire movement in the second direction Y. By setting the projection length of the line segment between the points A3 and A4 in the second direction Y to account for 60%-65% of the projection length of the line segment between the points A3 and A5 in the second direction Y, the arc segment between the points A3 and A4 can be made as smooth as possible, preventing abrupt changes and making the opening and closing of the door body 20 more smooth.

[0125] In some embodiments, the distance between the first trajectory line 204 and the second reference plane F2 increases as the opening angle of the door body 20 increases, and the distance between the first trajectory line 204 and the cabinet 10 first decreases and then increases as the opening angle of the door body 20 increases.

[0126] In the above embodiment, by setting the shape of the first trajectory line 204, the movement position of the door body 20 is controlled, the opening and closing of the door body 20 is smoother, and interference between the door body 20 and the wall body 50 or the cabinet body during opening and closing is prevented, achieving zero-embedded installation of the cabinet 10.

[0127] In some embodiments, the first trajectory line 204 includes sequentially connected first, second, and third arc segments formed from the door body 20 being in a fully closed state to a fully open state, the first arc segment is configured as a shape of a quadratic function curve protruding towards the cabinet 10; and the second and third arc segments are configured as circular arc segments.

[0128] In the above embodiment, since the door body 20 is initially set to open, the angle region enclosed by the first side surface 201 and the third side surface 203 first moves a distance towards the cabinet 10, and then moves away from the cabinet 10, therefore, the first arc segment is configured as a shape of a quadratic function curve protruding towards the cabinet 10, which plans a route for the movement of the door body 20, and the shape of the quadratic function curve can make the opening and closing action of the door body 20 more smooth and stable. The second and third arc segments are configured as circular arc segments, so that during the continuous opening of the door body 20, the circular arc segments can make the door body 20 as close to the wall surface as possible within a limited space, increase the maximum opening angle of the door body 20, and enable the door body 20 to move smoothly, reducing the impact of the door body 20 on the edge of the cabinet 10.

[0129] In some embodiments, the first arc segment is an arc segment from point A1 to point A3, the second arc segment is an arc segment from point A3 to point A4, and the third arc segment is an arc segment from point A4 to point A5; wherein,

[0130] Point A1 is the position of the first edge 21 of the door body 20 on the first trajectory line 204 when the door body 20 is in a fully closed state;

[0131] Point A3 is the position of the first edge 21 on the first trajectory line 204 when the opening angle of the door body 20 is 20°-40°;

[0132] Point A4 is the position of the first edge 21 on the first trajectory line 204 when the opening angle of the door body 20 is 90°;

[0133] Point A5 is the position of the first edge 21 on the first trajectory line 204 when the door body 20 is in a fully open state.

[0134] In the above embodiment, during the process from the fully closed state to the opening angle of 20°-40°, the first edge 21 runs along the first arc segment from point A1 to point A3, so that the door body 20 is first slowly moved towards the cabinet body 10 from the fully closed state, and then smoothly and slowly moved until the door body 20 carrying the sealing element leaves the cabinet body 10, thereby improving the movement stability of the door body 20 in the initial opening state. From the opening angle of 20°-40° to the opening angle of 90°, the first edge 21 runs along the second arc segment, which is a circular arc segment, and can smoothly transition with the first arc segment to prevent sudden changes. From the opening angle of 90° to the maximum opening angle, the first edge 21 runs along the third arc segment, which is also a circular arc segment, and can make the door body 20 as close to the wall body 50 as possible to increase the maximum opening angle of the door body 20.

[0135] In some embodiments, the curvature of the second arc segment is greater than the curvature of the third arc segment, and the arc length of the second arc segment is greater than the arc length of the third arc segment.

[0136] In the above embodiment, as the opening angle of the door body 20 increases, the curvature of the third arc segment decreases relative to the curvature of the second arc segment, and the arc length of the third arc segment decreases relative to the arc length of the second arc segment, which can make the trajectory of the door body 20 closer to a straight line as it approaches the fully open state, reduce the projection distance of the door body 20 outward, and make the movement of the door body 20 more smooth, which is more conducive to the door body 20 smoothly approaching the wall body 50 or the cabinet body and reducing collisions.

[0137] In some embodiments, the second arc segment corresponds to a minor arc, and the third arc segment corresponds to a minor arc.

[0138] In the present embodiment, the maximum opening angle of the door body 20 is within 110°, which can enable the cabinet assembly to achieve embedded opening and closing.

[0139] According to the above description of the embodiments, the shape of the first trajectory line 204 of the first edge 21 can be determined. Since the distance between the second edge 22 and the first edge 21 is always T, according to the corresponding relationship, the shape of the second trajectory line 205 of the second edge 22 can be determined when the shape of the first trajectory line 204 of the first edge 21 is determined.

[0140] Since the distance T between the second edge 22 and the first edge 21 satisfies the following relationship:

[0141] After the coordinates u(x1, y1) of any point u on the first trajectory line 204 are known, the coordinates v(x2, y2) of any point v on the second trajectory line 205 can be obtained according to the above relationship.

[0142] Therefore, in the case that the shape of the first trajectory line 204 of the first edge 21 is determined, the shape of the second trajectory line 205 of the second edge 22 can be determined.

[0143] In some embodiments, the cabinet assembly further comprises a shaft assembly 30 and a trajectory groove set 40, the shaft assembly 30 is arranged at one of the door body 20 and the cabinet 10, the trajectory groove set 40 is arranged at the other one of the door body 20 and the cabinet 10, the shaft assembly 30 comprises a first shaft 31 and a second shaft 32, the trajectory groove set 40 comprises a first groove 41 and a second groove 42, the first shaft 31 is configured to move in the first groove 41 relative to the first groove 41 with the opening and closing of the door body 20, and the second shaft 32 is configured to move in the second groove 42 relative to the second groove 42 with the opening and closing of the door body 20.

[0144] In the above-mentioned embodiments, by arranging two shafts on the cabinet 10 and two trajectory grooves on the door body 20, the movement of the door body 20 is limited, the embedded opening and closing of the door is realized, the gap required to be reserved on both sides of the cabinet 10 can be greatly reduced, the zero-gap embedding is realized, and technical support is provided for the research and development of embedded refrigerators.

[0145] Referring to FIG. 9, in some embodiments, the arrangement area of the shaft assembly 30 is within a quadrilateral nA5B5m (including the edge lines of the quadrilateral nA5B5m) formed by sequentially connecting the n point, the A5 point, the B5 point and the m point.

[0146] The n point is the intersection of the second side surface 202 in the completely closed state of the door body 20 and the first side surface 201 in the completely opened state of the door body 20.

[0147] The A5 point is the position of the first edge 21 on the first trajectory line 204 in the completely opened state of the door body 20.

[0148] The B5 point is the position of the second edge 22 on the second trajectory line 205 in the completely opened state of the door body 20.

[0149] The m point is the intersection of the second side surface 202 in the completely closed state of the door body 20 and the second side surface 202 in the completely opened state of the door body 20.

[0150] In the above embodiment, since the first shaft 31 and the second shaft 32 realize the movement of the door body 20 relative to the cabinet 10 in cooperation with the first slot 41 and the second slot 42, no matter how the door body 20 moves, the first shaft 31 and the second shaft 32 cannot leave the door body 20, and thus the setting area of the shaft assembly 30 is limited in a quadrilateral nA5B5m formed by sequentially connecting the n point, the A5 point, the B5 point and the m point, thereby providing a reference basis for the setting position of the shaft assembly 30, so that the first shaft 31 and the second shaft 32 do not leave the door body 20 during the opening and closing process of the door body 20, and the door body 20 can move relative to the cabinet 10 along the planned path.

[0151] In some embodiments, the setting area of the shaft assembly 30 is in a quadrilateral cdgh formed by sequentially connecting the c point, the d point, the g point and the h point (including the edges of the quadrilateral cdgh).

[0152] The line cd connecting the c point and the d point is parallel to the line nm connecting the n point and the m point, and the line cd is offset to the inside of the quadrilateral nA5B5m relative to the line nm by 7t to 9.5t.

[0153] The line gd connecting the d point and the g point is parallel to the line mB5 connecting the m point and the B5 point, and the line gd is offset to the inside of the quadrilateral nA5B5m relative to the line mB5 by 4t to 6.5t.

[0154] The line hg connecting the g point and the h point is parallel to the line A5B5 connecting the A5 point and the B5 point, and the line hg is offset to the inside of the quadrilateral nA5B5m relative to the line A5B5 by 2t to 3t.

[0155] The line ch connecting the c point and the h point is parallel to the line nA5 connecting the A5 point and the n point, and the line ch is offset to the inside of the quadrilateral nA5B5m relative to the line nA5 by 2t to 3t.

[0156] 0.9≤t≤1.1, and T=50t (mm).

[0157] Since the first side surface 201, the second side surface 202 and the third side surface 203 of the door body 20 need to be provided with a door frame or a slot plate 40a and the like, the area surrounded by the quadrilateral nA5B5m needs to be reserved near the edge to install the door frame or the slot plate 40a and the like, and in the above embodiment, the setting area of the shaft assembly 30 is further limited in a quadrilateral cdgh formed by sequentially connecting the c point, the d point, the g point and the h point, which can provide a more accurate reference basis for the setting position of the shaft assembly 30, and facilitate the setting of the shaft centers of the first shaft 31 and the second shaft 32 in a reasonable area of the door body 2.

[0158] In some embodiments, the axis of the first shaft 31 is located in a triangular region Q1Q6Q7 (including the edge lines of the triangular region Q1Q6Q7) formed by sequentially connecting the Q1 point, the Q6 point and the Q7 point, and the axis of the second shaft 32 is located in a quadrilateral region Q2Q3Q5Q4 (including the edge lines of the quadrilateral region Q2Q3Q5Q4) formed by sequentially connecting the Q2 point, the Q3 point, the Q5 point and the Q4 point.

[0159] The Q1 point is the center of the first circle 61, and the first circle 61 is a circle that is tangent to the line cd and the line hg in the quadrilateral cdgh and has a radius R1.

[0160] The Q2 point is on an arc of an eighth circle 68 formed by taking the Q1 point as the center and S as the radius. The Q2 point is the center of the second circle 62, and the second circle 62 is a circle that is tangent to the line hg in the quadrilateral cdgh and has a radius R2.

[0161] The Q3 point is on an arc of the eighth circle 68 formed by taking the Q1 point as the center and S as the radius. The Q3 point is the center of the third circle 63, and the third circle 63 is a circle that is tangent to the line cd in the quadrilateral cdgh and has a radius R2.

[0162] The Q4 point is the center of the fourth circle 64, and the fourth circle 64 is a circle that is tangent to the line hg and the line gd in the quadrilateral cdgh and has a radius R2.

[0163] The Q5 point is the center of the fifth circle 65, and the fifth circle 65 is a circle that is tangent to the line cd and the line gd in the quadrilateral cdgh and has a radius R2.

[0164] The Q6 point is on an arc of a ninth circle 69 formed by taking the Q4 point as the center and S as the radius, and the Q6 point is the center of the sixth circle 66. The sixth circle 66 is a circle that is tangent to the line hg in the quadrilateral cdgh and has a radius R1.

[0165] The Q7 point is on an arc of a tenth circle 70 formed by taking the Q5 point as the center and S as the radius, and the Q7 point is the center of the seventh circle 67. The seventh circle 67 is a circle that is tangent to the line cd in the quadrilateral cdgh and has a radius R1.

[0166] R1 is the radius of the first shaft 31, R2 is the radius of the second shaft 32, and S is the distance between the axis of the first shaft 31 and the axis of the second shaft 32. S is selected based on the fact that the first groove 41 and the second groove 42 do not intersect.

[0167] In the above embodiments, the radius of the first shaft 31 and the radius of the second shaft 32 can be the same or different.

[0168] Firstly, the setting positions of the first shaft 31 and the second shaft 32 can only be selected within the range surrounded by the quadrilateral cdgh, the partial limit positions of the first shaft 31 and the second shaft 32 within the quadrilateral cdgh are determined by drawing some small circles with the radii of the shaft diameters of the first shaft 31 and the second shaft 32 and tangent to the quadrilateral cdgh, and the other partial limit positions of the first shaft 31 and the second shaft 32 within the quadrilateral cdgh are determined by drawing auxiliary circles with the centers of the determined limit positions of the small circles and according to the safety distance S between the first shaft 31 and the second shaft 32, and by this method, the setting positions of the first shaft 31 and the second shaft 32 can be more accurately selected, which provides the basis for the selection of the setting positions of the first shaft 31 and the second shaft 32.

[0169] Referring to FIG. 10, in some embodiments, the coordinates of any point A'(x1', y1') on the first slot 41 in the xy rectangular coordinate system satisfy the following relationship:

[0170] Wherein, the xy rectangular coordinate system is established with the intersection of the second side 202 and the third side 203 of the door body 20 in the fully closed state as the origin, the first direction X as the positive direction of the x axis, and the second direction Y as the positive direction of the y axis.

[0171] θ is the opening angle of the door body 20.

[0172] The coordinates of the center A of the first shaft 31 in the xy rectangular coordinate system are A(ax, ay).

[0173] ax is the x coordinate of the center A of the first shaft 31 in the xy rectangular coordinate system.

[0174] ay is the y coordinate of the center A of the first shaft 31 in the xy rectangular coordinate system.

[0175] The coordinates of any point u on the first trajectory line 204 in the xy rectangular coordinate system are u(x1, y1).

[0176] x1 is the x coordinate of any point u on the first trajectory line 204 in the xy rectangular coordinate system, and y1 is the y coordinate of any point u on the first trajectory line 204 in the xy rectangular coordinate system.

[0177] The coordinates of any point v on the second trajectory line 205 in the xy rectangular coordinate system are v(x2, y2).

[0178] x2 is the x coordinate of any point on the second trajectory line 205 in the xy rectangular coordinate system, and y2 is the y coordinate of any point on the second trajectory line 205 in the xy rectangular coordinate system.

[0179] Since the first shaft 31 and the second shaft 32 are fixed on the cabinet 10, the coordinates of the shaft centers of the first shaft 31 and the second shaft 32 in the xy rectangular coordinate system can be obtained when the door body 20 is in the fully closed state.

[0180] During the opening of the door body 20, the first shaft 31 moves relative to the first slot 41, and the second shaft 32 moves relative to the second slot 42. An x'y' relative rectangular coordinate system is established with the intersection of the second side surface 202 and the third side surface 203 of the door body 20 in the open state as the origin, the extension direction of the second side surface 202 as the positive direction of the x' axis, and the extension direction of the third side surface 203 as the positive direction of the y' axis.

[0181] The embodiments of the present application control the movement position of the door body 20 by cooperation of the two trajectory slots and the two shafts. During the movement of the door body 20, the first shaft 31 and the second shaft 32 move in the first slot 41 and the second slot 42 on the slot plate 40a fixed on the door body 20, so the two shafts move relative to the door body 20. There are always two points on the moving door body 20, the positions of which coincide with the shaft centers of the first shaft 31 and the second shaft 32 fixed on the cabinet 10, and the coordinates of the two points in the x'y' relative rectangular coordinate system are the coordinates of the first shaft 31 and the second shaft 32 in the absolute coordinate system xy rectangular coordinate system when the door body 20 is in the fully closed state, that is, the absolute positions of the two shafts on the door body 20 remain unchanged during the movement of the door body. As shown in FIG. 10.

[0182] According to the principle that the absolute positions of the two shafts on the door body 20 remain unchanged, the positions of the door body 20 can be determined by the first trajectory line 204 and the second trajectory line 205, that is, the forms of the first slot 41 and the second slot 42 can be determined, thereby providing a basis for setting the first slot 41 and the second slot 42.

[0183] In some embodiments, the coordinates of any point B'(x2', y2') on the second slot 42 in the xy rectangular coordinate system satisfy the following relationship:

[0184] Wherein, the xy rectangular coordinate system is established with the intersection of the second side surface 202 and the third side surface 203 of the door body 20 in the fully closed state as the origin, the first direction X as the positive direction of the x axis, and the second direction Y as the positive direction of the y axis.

[0185] θ is the opening angle of the door body 20.

[0186] The coordinates of the shaft center A of the first shaft 31 in the xy rectangular coordinate system are A(ax, ay).

[0187] ax is the x coordinate of the shaft center A of the first shaft 31 in the xy rectangular coordinate system.

[0188] ay is the y coordinate of the axis center A of the first shaft 31 in the xy rectangular coordinate system.

[0189] The coordinates of any point u on the first trajectory line 204 in the xy rectangular coordinate system are u(x1, y1).

[0190] x1 is the x coordinate of any point u on the first trajectory line 204 in the xy rectangular coordinate system, and y1 is the y coordinate of any point u on the first trajectory line 204 in the xy rectangular coordinate system.

[0191] The coordinates of any point v on the second trajectory line 205 in the xy rectangular coordinate system are v(x2, y2).

[0192] x2 is the x coordinate of any point on the second trajectory line 205 in the xy rectangular coordinate system, and y2 is the y coordinate of any point on the second trajectory line 205 in the xy rectangular coordinate system.

[0193] The determination principle of the second groove 42 is the same as that of the first groove 41, and the shapes of the second groove 42 and the first groove 41 can be accurately determined by the above method.

[0194] According to the description of each of the above embodiments, the box body assembly can change the position of the door body 20 rotating around the hinge shaft according to different opening and closing angles when the door body 20 is opened and closed, ensures that the outermost side of the door body 20 does not exceed the outermost side of the box body 10, and provides technical support for the development and application of the built-in refrigerator.

[0195] The implementation of the built-in refrigerator is actually to control the movement position of the door body 20 by setting a specific trajectory curve. The embodiments of the present application provide that the first edge 21 of the door body 20 moves along the first trajectory line 204, and the relationship between the first edge 21 and the second edge 22 and the relationship between the first edge 21 and the two trajectory grooves are obtained according to the geometric relationship.

[0196] In the embodiments of the present application, the determination of the first edge 21 has several key points, and the selection (consideration and role of each point selection) and range of the A1 point, the A2 point, the A3 point, the A4 point and the A5 point are described in detail.

[0197] For the A1 point and the A5 point: the A1 point is the starting point of the first trajectory line 204, and the A5 point is the terminal point of the first trajectory line 204. The selection of the starting point and the terminal point not only affects the size, assembly method of the hinge module, the gap between the door body 20 and the wall 50, but also determines the overall position of the door body 20, thereby determining the space utilization rate of the box body 10.

[0198] A2 is the maximum edge point allowed by the seal (to avoid excessive wear of the seal): the position of A2 is also considered in the presence of the door closer, and the position of A2 also affects the smoothness of the movement of the door body 20 and the opening hand feeling.

[0199] A3 is the instantaneous position of the seal leaving the cabinet 10: by limiting the distance between A2 and A3, the curvature of the first trajectory line 204 of the first edge 21 can be avoided. The normal acceleration of the door body 20 caused by the curvature mutation is prevented, thereby causing the movement of the door body 20 to be smooth.

[0200] A4 is the position of the first edge 21 on the first trajectory line 204 when the opening angle of the door body 20 is 90°: the selection of A4 affects the space occupied by the door body 20 in the cabinet 10 when the opening angle is 90°, and the space occupied by the door body 20 in the cabinet 10 should be reduced; the position of A4 also limits the gap between the door body 20 and the side of the wall 50, ensuring that the door does not touch the wall, and the position of A4 is connected, and the curvature of the arc segment from A3 to A4 and the arc segment from A4 to A5 should be smooth without mutation.

[0201] Some specific embodiments will be given below to describe the characteristics and assembly relationship of the parts of the cabinet assembly, the determination of the running trajectory of the first edge 21 and the second edge 22 of the door body 20, the determination of the positions of the first shaft 31 and the second shaft 32, and the determination of the form of the first slot 41 and the second slot 42.

[0202] I. Structure characteristics and assembly relationship of parts:

[0203] The main body part includes: a cabinet 10, a door body 20 and a wall 50. The main matching parts are: a hinge 30a fixedly installed on the cabinet 10, and a slot plate 40a fixedly installed on the door body 20 by screws or buckles. The hinge 30a is provided with a first shaft 31 and a second shaft 32, and the slot plate 40a is provided with a first slot 41 and a second slot 42. The first shaft 31 and the second shaft 32 of the hinge 30a move in the first slot 41 and the second slot 42 of the slot plate 40a, respectively.

[0204] For ease of analysis, the entire assembly of moving parts is simplified, as shown in FIG. 4. Define several special planes: the cabinet 10 has a taking and placing side 101 and an outer side 102 of the cabinet relative to the door body 20 and the wall 50; the door body 20 has a third side 203 close to the wall 50, a first side 201 close to the cabinet 10, and a second side 202 close to the user.

[0205] The distance between the first side 201 and the taking and placing side 101 is 16%T~25%T.

[0206] In practical applications, the distance between the first side surface 201 and the access side 101 can be 9mm-11mm. The door thickness T is generally 45mm-55mm.

[0207] The space between the first side surface 201 and the access side 101 is used to set a sealing member to prevent the refrigerator from leaking cold. In order to facilitate installation, the outer side surface 102 of the cabinet and the side surface of the wall 50 are prearranged at a distance of 3%T-7%T. Alternatively, the distance between the outer side surface 102 of the cabinet and the side surface of the wall 50 is 2mm-3mm.

[0208] A first reference plane F1 is arranged between the access side 101 and the first side surface 201, and a second reference plane F2 is arranged between the outer side surface 102 of the cabinet 10 and the wall surface.

[0209] The distance between the first reference plane F1 and the access side 101 is f1, and f1 is in the range of 12%T-25%T. Alternatively, the distance between the first reference plane F1 and the access side 101 is f1, and f1∈(7, 11)mm.

[0210] The distance between the second reference plane F2 and the outer side surface 102 of the cabinet is f2, and f2 is less than 1%T. Alternatively, the distance between the second reference plane F2 and the outer side surface 102 of the cabinet is f2, and f2∈(0, 0.5)mm.

[0211] Under the action of an external force, during the opening or closing of the door body 20, due to the limitation of the track groove, the movement of the door body side edge will form two side edge tracks. The third side surface 203 intersects with the first side surface 201 to form a first edge 21, and the third side surface 203 intersects with the second side surface 202 to form a second edge 22. The movement tracks of the first edge 21 and the second edge 22 are a first track line 204 and a second track line 205, respectively. The track of the first edge 21 will not cross the first reference plane F1 at all times, otherwise the sealing member is prone to scratching the cabinet 10, and the sealing member will be twisted. The track of the second edge 22 will not cross the second reference plane F2 at all times, so as to ensure that the door body 20 can be smoothly embedded with zero gap.

[0212] In some embodiments, the maximum opening angle range of the door body 20 is 100°-120°. Alternatively, the maximum opening angle of the door body 20 is 110°.

[0213] In some embodiments, the door thickness T is 50t mm, i.e. the distance between the second side surface 202 and the first side surface 201 is 50t mm. Wherein, 0.9≤t≤1.1. Alternatively, t=1.

[0214] II. Determination of the first track line 204 and the second track line 205 corresponding to the first edge 21 and the second edge 22 of the door body 20

[0215] 2.1 First determine the starting point A1 and B1 of the first trajectory line 204 and the second trajectory line 205:

[0216] According to the above, the distance between the first side surface 201 of the door body 20 and the taking and placing side 101 of the box body 10 is set to 9mm-11mm, and the distance between the outer side surface 102 of the box body 10 and the side surface of the wall body 50 is reserved to be 2mm-3mm.

[0217] As shown in FIG. 9, it is the state when the door body 20 is opened to the maximum angle (set to 110° in some embodiments). The intersection of the first side surface 201 of the door body 20 when opened to the maximum angle and the second side surface 202 of the door body 20 in the completely closed state is the n point, and the distance between the n point and the third side surface 203 of the door body 20 when opened to the maximum angle is nA5. The value of nA5 will affect the size and assembly method of the hinge module. The larger the value of nA5, the more conducive to installation, but at the same time, it also makes the door body 20 move more towards the box body 10 when moving, thereby causing more space inside the box body 10 to be occupied. Therefore, the value of nA5 is in the range of 27%T-56%T. In some examples, the value of nA5 is in the range of 15mm-25mm. Alternatively, the value of nA5 is 15mm.

[0218] The intersection of the second side surface 202 of the door body 20 in the completely open state and the second side surface 202 of the door body 20 in the completely closed state is the m point, and the distance between the m point and the third side surface 203 of the door body 20 in the completely closed state is mB1. mB1 is a safety distance reserved. In actual application, in order to provide a larger tolerance range for the production of the door body 20 and avoid collision between the door body 20 and the wall body 50 due to manufacturing defects, the value of mB1 is less than 0.07%T. In some embodiments, the value of mB1 is in the range of 0-3mm. Alternatively, the value of mB1 is 1mm.

[0219] The starting point of the movement trajectory of the first edge 21 and the second edge 22, i.e. the positions of the A1 point and the B1 point, and the ending point, i.e. the positions of the A5 point and the B5 point, are obtained through the positions from the completely closed state of the door body 20 to the state of the door body 20 opened to the maximum angle.

[0220] 2.2 Selection of intermediate special control points:

[0221] In the overall scheme design, considering the actual problems such as effective use of space and smooth and easy opening and closing of the door, certain restrictions need to be made on the special positions of the door body 20 in the opening and closing process.

[0222] 2.2.1 Maximum sealing edge A2 point:

[0223] In practical applications, the distance between the first side surface 201 of the door body 20 and the taking and placing side 101 of the box body 10 can be selected as 9mm-11mm, which is used to set the sealing element. Generally, the thickness of the sealing element itself is 1mm-3mm less than the distance, which is used as compensation for the sealing element. That is, the magnetic stripe on the sealing element of the door body 20 has a 0.5mm-3mm air bag compression amount when it is attracted to the box body 10.

[0224] When the door body 20 is initially opened, the angle area enclosed by the first side surface 201 and the third side surface 203 will first move a distance towards the box body 10. At this time, the sealing element on the door body 20 will be pressed towards the box body 10. If the pressing amount of the sealing element exceeds the sealing element compensation amount of the sealing element itself, there is a risk of edge twisting of the sealing element. Therefore, the maximum edge twisting point of the sealing element cannot exceed the first reference plane F1 (the distance between the first reference plane F1 and the taking and placing side 101 is f1, f1∈(7, 11)mm).

[0225] In some embodiments, the distance between the first side surface 201 and the taking and placing side 101 is 10mm, the distance f1 between the first reference plane F1 and the taking and placing side 101 is 9.4mm, and the sealing element compensation amount of the selected sealing element is 1.5mm. The maximum edge twisting amount (0.6mm) of the sealing element is less than the sealing element compensation amount (1.5mm), which can completely avoid the risk of edge twisting of the sealing element.

[0226] On the other hand, considering the existence of a door closer (a door closer: a part installed on one side of the hinge, which looks like a hook. When the door is closed to a certain angle, the door body 20 can be automatically closed in place under the action of the door closer) in practical applications, the resistance of the door closer needs to be overcome during the opening of the door body 20. Generally, the action angle between the door closer and the door body 20 is 6°-11°, and in some embodiments, the action angle between the door closer and the door body 20 is 8°.

[0227] The maximum edge twisting A2 point of the sealing element is set after the door body 20 is separated from the door closer, which can reduce the opening force (that is, the maximum edge twisting A2 point of the sealing element needs to be set at a position where the opening angle of the door body 20 is greater than 8°); in order to leave enough displacement margin for the subsequent movement of the door body 20, ensure a smooth and easy feeling when opening the door, and meet the requirement that the curvature of the edge trajectory curve is as smooth as possible, the position of the maximum edge twisting A2 point of the sealing element cannot exceed the position where the opening angle of the door body 20 is 20°.

[0228] Specifically, in some embodiments, the A2 point is set at a position where the opening angle of the door body 20 is 16.9°, and the coordinates of the first edge 21 at the position of the first trajectory line 204 in the xy rectangular coordinate system are (14.9t, 50.6t). Referring to FIGS. 4 and 5.

[0229] 2.3 A3 point corresponding to the leaving position of the sealing element:

[0230] In order to ensure smooth movement of the door body 20, the curvature of the edge trajectory curve should meet the basic requirement of uniformity and non-sudden change as much as possible after the door body 20 moves to the maximum sealing edge A2 point. Therefore, after the door body 20 leaves the maximum sealing edge A2 point, it should be smoothly and slowly until the sealing element leaves the box body. If the distance between the A3 point at which the sealing element leaves the box body and the maximum sealing edge A2 point is too small, the curve curvature of the A2A3 arc segment (the arc segment between the maximum sealing edge point of the sealing element and the point at which the sealing element leaves the box body) from the A2 point to the A3 point will suddenly change and become large. If the distance between the A3 point at which the sealing element leaves the box body and the maximum sealing edge A2 point is too large, the curve curvature of the A3A5 arc segment (the arc segment between the point at which the sealing element leaves and the terminal point) from the A3 point to the A5 point will suddenly change and become large. The large curve curvature will cause the normal acceleration of the door body 20 to become large, thereby causing the movement of the door body 20 to be not smooth.

[0231] The A3 point falls on the first side surface 201 of the door body 20 in the completely closed state. In combination with the position of the maximum sealing edge A2 point, the A3 point at which the sealing element leaves the box body 10 can be taken as the intersection position of the first trajectory line 204 corresponding to the opening angle of the door body 20 being 20°-40° and the first side surface 201 of the door body 20 in the completely closed state. In some embodiments, the A3 point is arranged at the position of the first trajectory line 204 corresponding to the opening angle of the door body 20 being 35.3° and the first edge 21. In the xy rectangular coordinate system, the coordinates of the A3 point can be selected as (29.9t, 50t).

[0232] 2.4 A4 point corresponding to the opening angle of the door body 20 being 90°:

[0233] When the opening angle of the door body 20 is 90°, on the one hand, the second side surface 202 should be as close as possible to the outer side surface 102 of the box body 10, thereby reducing the space required when the internal moving components (such as a drawer) of the box body 10 move outward, and improving the space utilization rate of the refrigerator. On the other hand, it is necessary to ensure that there is sufficient gap between the second side surface 202 and the side surface of the wall 50 when the opening angle of the door body 20 is greater than 90°. Based on the above two points, the position of the door body 20 at which the opening angle is 90° needs to be specially controlled.

[0234] As shown in FIG. 7, it is the state when the door body 20 is opened to 90°. The intersection of the first side surface 201 when the door body 20 is opened to 90° and the second side surface 202 in the completely closed state of the door body 20 is the K point, and the distance between the K point and the third side surface 203 when the door body 20 is opened to 90° is KA4. It can be known from the above analysis (analysis of the selection of the starting point and the terminal point) that KA4 is greater than nA5. The intersection of the second side surface 202 when the door body 20 is opened to 90° and the second side surface 202 in the completely closed state of the door body 20 is the F point, and the distance between the F point and the third side surface 203 in the completely closed state of the door body 20 is FB1.

[0235] In order to improve the space utilization of the cabinet 10, the FB1 should be as small as possible, that is, when the door body 20 moves to the 90° position, the distance between the second side surface 202 and the outer side surface 102 of the cabinet 10 should be as small as possible, and the space occupied by the door body 20 should be as small as possible. In addition, when the opening angle of the door body 20 is greater than 90° (for example, 90°-110°), a gap should be left between the second side surface 202 and the side surface of the wall 50, that is, the second side surface 202 should not collide with the side surface of the wall 50, so the FB1 should be greater than the mB1.

[0236] According to the above analysis, the curvature of the edge trajectory curve should meet the basic requirements of uniformity, smoothness and non-mutation as much as possible, that is, the curve curvatures of the A3A4 segment and the A4A5 segment should be as smooth as possible, so the position connecting the A3 point and the A4 point is extremely important, and the curvature should not be allowed to mutate when the curve passes through this position. The A3 point is the point at which the sealing element leaves the cabinet 10, and the movement of the door body 20 on the A3A5 segment (in some embodiments, the opening angle of the door body 20 is 35.3°-110°) can be regarded as its entire movement in the second direction Y. In order to ensure the smooth movement of the door body 20, the movement distance of a point on the door body 20 in the second direction Y (that is, the y-coordinate difference of the A3A4 segment curve) when the point moves from the point at which the sealing element leaves the cabinet 10 (the A3 point) to the position at which the opening angle of the door body 20 is 90° along the first edge 21 should occupy 60%-65% of the total movement distance of the door body 20 in the second direction Y (that is, the y-coordinate difference of the A1A4 curve), and in some embodiments, the selected proportion is 62%.

[0237] Therefore, in some embodiments, the value range of KA4 is 20mm-30mm, and optionally, the value of KA4 is 27.6mm. The value range of FB1 is 3mm-10mm. Optionally, the value of FB1 is 6.5mm.

[0238] III. Description of the Trajectory Curves of the Two Edges of the Door Body 20

[0239] According to the above, the position coordinates of several points (A1 point, A2 point, A3 point, A4 point, A5, B1 point, B2 point, B3 point, B4 point and B5 point) on the movement trajectory of the first edge 21 and the second edge 22 are determined. It can be known from analytical geometry analysis that there is a one-to-one function relationship between the first edge 21 and the second edge 22, that is, the position coordinates of the points on one edge can be used to deduce the position coordinates of the corresponding points on the other edge. Since the distance between the B5 point and the B1 point of the second edge 22 on the x-axis and the y-axis is small, and the trajectory will not cross the second reference plane F2 all the time. In order to ensure the smooth and stable movement of the door body 20, it is required that the curvatures of the inner and outer edge curves should be uniform and have no abrupt change. Therefore, the curvature of the second trajectory line 205 of the second edge 22 can be changed in a small range, and thus the influence of the second edge 22 on the overall movement trend of the door body 20 is small. Therefore, the following content will focus on describing the first trajectory line 204 of the first edge 21.

[0240] 3.1 Relationship between the first edge 21 and the second edge 22:

[0241] A xy rectangular coordinate system as shown in FIG. 10 is established with the front face 501 of the wall body and the outer side face 102 of the box body as the reference, the direction away from the side face of the box body 10 and pointing to the center of the box body 10 is taken as the positive direction of the x-axis, the direction away from the front face of the door body 20 and pointing to the front face of the box body 10 is taken as the positive direction of the y-axis, the thickness of the door body 20 is taken as 50t, t ∈ [0.9, 1.1], and t = 1 is taken as an example for illustration, the angle of rotation of the door body 20 is θ, θ ∈ [0, 110°], in the top view, the projection of the first edge 21 of the door body 20 is a point u (x1, y1), and the trajectory formed in the movement process is A1A5, the projection of the second edge 22 of the door body 20 is a point v (x2, y2), and the trajectory formed in the movement process is B1B5.

[0242] The relationship between u and v is:

[0243] The coordinates of the v point can be obtained from the coordinates of the u point:

[0244] 3.2 Description of the first trajectory line 204 of the first edge 21:

[0245] The movement process of the door body 20 is divided into three stages:

[0246] 3.2.1 Referring to FIG. 6, the door body 20 is in a completely closed state (0°) - the moment when the sealing element leaves the box body 10 (the opening angle of the door body 20 is 35.3°):

[0247] The stage corresponds to the first arc segment of the first trajectory line 204, which is the first arc segment A1A2A3. The value range of the starting point A1, the maximum twisted edge A2 of the sealing element, and the point A3 at which the sealing element leaves the cabinet 10 has been determined according to the analysis above, and the specific position coordinates selected in some embodiments.

[0248] In some embodiments, the first arc segment A1A2A3 is set as a curve with smooth curvature, and is simplified and fitted as a quadratic function curve with symmetry. Referring to FIG. 6, an x''y'' rectangular coordinate system is established, which is a coordinate system established with the intersection of the first side surface 201 and the third side surface 203 of the door body 20 in the fully closed state as the origin, the direction away from the third side surface 203 and pointing to the center of the door body 20 as the positive direction of the x'' axis, and the direction away from the first side surface 201 of the door body 20 and pointing to the loading and unloading side 101 of the cabinet 10 as the positive direction of the y'' axis. The quadratic function with symmetry to which the first arc segment A1A2A3 is simplified and fitted is: y = c1x 2 +c2x+c3.

[0249] Among them, the value range of c1 is -0.0046-0. The value range of c2 is 0-0.135. c3 = 0.

[0250] In some embodiments, the quadratic function with symmetry to which the first arc segment A1A2A3 is simplified and fitted is: y = -0.0028x 2 +0.081x

[0251] 3.2.2 The point at which the sealing element leaves the cabinet 10 (the door body 20 is opened to an angle of 35.3°) - the door body 20 is opened to an angle of 90°:

[0252] The stage corresponds to the second arc segment of the first trajectory line 204, which is the second arc segment A3A4. The value range of the point A3 at which the sealing element leaves the cabinet 10 and the point A4 at which the door body 20 is opened to an angle of 90° has been determined according to the analysis above, and the specific position coordinates selected in some embodiments.

[0253] Referring to FIG. 10, an xy rectangular coordinate system is established, which is a rectangular coordinate system established with the intersection of the second side surface 202 and the third side surface 203 of the door body 20 in the fully closed state as the origin, the direction away from the third side surface 203 and pointing to the center of the door body 20 as the positive direction of the x axis, and the direction away from the second side surface 202 and pointing to the first side surface 201 as the positive direction of the y axis.

[0254] The second arc segment A3A4 is set as a smooth curve with consistent curvature, and is simplified and fitted as a circular arc segment with a center coordinate of (27t, 19.7t) and a radius of 30t-31t. Alternatively, the radius is 30.4t.

[0255] 3.2.3 Door body 20 opens to 90-degree state (door body opening angle 90°) - door body 20 opens to a preset maximum angle (door body opening angle 110°):

[0256] This stage corresponds to the third arc segment of the first trajectory line 204, which is the third arc segment A4A5. The value range of the point A4 corresponding to the position where the door body 20 opens to an angle of 90° and the point A5 corresponding to the completely open state of the door body 20 have been determined according to the above analysis, as well as the specific position coordinates selected in some embodiments.

[0257] The third arc segment A4A5 is set as a smooth curve with consistent curvature, which is simplified to a circular arc segment with a center coordinate of (14.4t, 11.7t) and a radius of 40t-50t after fitting. Alternatively, the radius is 45t.

[0258] IV. Position selection of two shafts

[0259] According to the above component assembly relationship, the first shaft 31 and the second shaft 32 on the hinge 30a are installed and fixed on the box body 10, which cooperates with the first slot 41 and the second slot 42 opened in the slot plate 40a installed on the door body 20 and moves in the slot.

[0260] Referring to FIG. 9, when the door body 20 moves from the completely closed state to the completely open position of the door body 20, to complete the embedded movement of the door body 20, the shaft centers of the first shaft 31 and the second shaft 32 always need to be on the door body 20, both in the completely closed door body 20 and in the completely open door body 20, so the positions of the two shafts are set within the quadrilateral nA5B5m formed by the four points n, A5, B5, and m.

[0261] In actual application, not any position within the thickness 50t of the door body 20 can be used to set the double shafts (the first shaft 31 and the second shaft 32). As can be known from the above analysis of the two edge trajectory determination, the distance between the double shafts and the second side surface 202 and the third side surface 203 is close during the movement of the door body 20, which needs to be controlled.

[0262] The second side 202 of the door body 20 needs to be provided with, in sequence, glass with a thickness of 3t-4t, a door frame with a thickness of 2t-3.5t, and a groove plate 40a with a thickness of 2t-3t in the direction of the first side 201; the third side 203 needs to be provided with, in sequence, a door frame with a thickness of 2t-3.5t and a groove plate 40a with a thickness of 2t-3t in the direction of the center of the door body 20; the direction from the first side 201 to the second side 202 needs to be provided with a groove plate 40a with a thickness of 2t-3t, and based on this, the above limiting conditions are added in the completely closed state (the door body opening angle is 0°) of the door body 20 and the completely open state (the door body opening angle is 110°) of the door body 20, and the double-axis setting range is further reduced to the cdgh range.

[0263] Referring to FIG. 8, the distance between the two axes of the double axis is greater than 15t to avoid the intersection of the two track grooves, and the radius of the double axis can be 2.5t-4t (including 2.5t and 4t) to ensure the strength of the double axis. In some embodiments, the glass thickness is 3.2t, the door frame thickness is 2.5t, the groove plate thickness is 2.5t, the distance between the two axis centers is 17.8t, and the axis radius is 3t.

[0264] To set the double axis in the cdgh range (in some embodiments, specifically a right trapezoid with an upper base of 3.1t, a lower base of 16.5t, and a height of 36.8t), the distance between the two axis centers is S=17.8t, and the axis radius is R1=R2=3t, so the range of the two axis centers is not large. The limit positions of the axes in the cdgh range are determined to further reduce the range of the two axes, and the specific method is as follows:

[0265] A first circle 61 with a radius of 3t is tangent to the cd and hg sides, and the center coordinates of the first circle 61 are (11.2t, 43.9t). An eighth circle 68 with a radius of 17.8t is made with the center of the first circle 61 as the center, a second circle 62 with a radius of 3t is obtained, which is tangent to the hg side, and the center coordinates of the second circle 62 are (17.3t, 27.2t). A third circle 63 with a radius of 3t is obtained, which is tangent to the cd side, and the center coordinates of the third circle 63 are (11.2t, 26.1t). A fourth circle 64 with a radius of 3t is made, which is tangent to the hg and gd sides, and the center coordinates of the fourth circle 64 are (19.8t, 20.1t). A ninth circle 69 with a radius of 17.8t is made with the center of the fourth circle 64 as the center, a sixth circle 66 with a radius of 3t is obtained, which is tangent to the hg side, and the center coordinates of the sixth circle 66 are (13.8t, 36.9t). A fifth circle 65 with a radius of 3t is made, which is tangent to the gd and cd sides, and the center coordinates of the fifth circle 65 are (11.2t, 17t). A tenth circle 70 with a radius of 17.8t is made with the center of the fifth circle 65 as the center, a seventh circle 67 with a radius of 3t is obtained, which is tangent to the cd side, and the center coordinates of the seventh circle 67 are (11.2t, 34.8t).

[0266] According to the above method, the acceptable range of the axis of the first shaft 31 and the axis of the second shaft 32 can be determined. Referring to FIG. 9, the acceptable range of the axis of the first shaft 31 is a small triangle shown in FIG. 9, that is, the region formed by the line connecting the center of the first circle 61, the center of the sixth circle 66, and the center of the seventh circle 67. The acceptable range of the axis of the second shaft 32 is a small quadrilateral, that is, the region formed by the line connecting the center of the second circle 62, the center of the third circle 63, the center of the fifth circle 65, and the center of the fourth circle 64.

[0267] The main idea of the above method is that the first circle 61 to the seventh circle 67 can further narrow the cdgh range formed to further lock the position of the double shaft. Since the shaft radius is 3t, the distance between the two shafts is 17.8t, and both shafts can only be selected within the cdgh range, a small circle with a radius of 3t and tangent to cdgh is first made to determine a part of the limit position of the shaft on cdgh. Then, according to the distance between the two shafts 17.8t, the center of the small circle of the determined limit position is used as an auxiliary circle to determine another part of the limit position of the two shafts.

[0268] In some embodiments, the selected axis of the first shaft 31 has a position coordinate of A(39.4t, 12.6t) in the xy coordinate system; and the axis of the second shaft 32 has a position coordinate of B(22.4t, 17.9t) in the xy coordinate system.

[0269] Five, double-groove track determination:

[0270] 5.1 Double-groove track determination method:

[0271] The embedded implementation is actually to control the movement position of the door body 20 through the cooperation of the two curved grooves and the two shafts. During the movement of the door body 20, the first shaft 31 and the second shaft 32 on the hinge 30a move in the first groove 41 and the second groove 42 of the groove plate 40a fixedly installed on the door body 20, so the two shafts move relative to the door body 20. There are always two points on the moving door body 20, the positions of which coincide with the axes of the first shaft 31 and the second shaft 32 of the hinge 30a fixedly installed on the cabinet 10, and the coordinates of these two points in the relative coordinate system x'y' based on the second side surface 202 and the third side surface 203 are the coordinates of the door body 20 in the absolute coordinate system xy (the absolute coordinate system xy referred to above is based on the front wall 501 and the outer side surface 102 of the cabinet which are always fixed) in the closed door state. That is, during the movement of the door body 20, the absolute positions of the two shafts on the door body 20 always remain unchanged. As shown in FIG. 10.

[0272] According to the principle that the absolute positions of the two axes on the door body 20 are unchanged, the position of the door body 20 movement determined by the first trajectory line 204 of the first edge 21 and the second trajectory line 205 of the second edge 22, that is, the double-groove trajectory can be determined. The following is a specific derivation process:

[0273] Suppose that the door body 20 is rotated to an angle θ, the equation of the straight line L1 formed by the projection of the second side surface 202 in the XY rectangular coordinate system is as follows: L1: y-x tan θ+x2 tan θ-y2=0

[0274] Suppose that the door body 20 is rotated to an angle θ, the equation of the straight line L2 formed by the projection of the third side surface 203 in the XY rectangular coordinate system is as follows:

[0275] L2:

[0276] As can be seen from the above description, in some embodiments, the positions of the two axes are as follows: the coordinate of the axis center of the first axis 31 is A(39.4t, 12.6t), and the coordinate of the axis center of the second axis 32 is B(22.4t, 17.9t).

[0277] Therefore, when the door body 20 is rotated to an angle θ, suppose that A'(x1', y1') and B'(x2', y2') are two points on the double-groove trajectory, the positions of the axis centers A and B in the relative coordinate system X'Y' are the positions of A' and B' in the absolute coordinate system XY, and thus the following can be obtained:

[0278] According to the principle that the distances from the point A to the two straight lines L1 and L2 are equal to the distances from A' to the x-axis and the y-axis respectively, that is, the distance from the point A to the straight line L1 is equal to the distance from A' to the x-axis, and the distance from the point A to the straight line L2 is equal to the distance from A' to the y-axis.

[0279] Thus, the coordinates of A'(x1', y1') can be obtained as follows:

[0280] Similarly, the coordinates of B'(x2', y2') can be obtained as follows:

[0281] By inputting the coordinates u(x1, y1) of any point on the first trajectory line 204 corresponding to the first edge 21 and the coordinates v(x2, y2) of any point on the second trajectory line 205 corresponding to the second edge 22, the coordinates of any point A' on the first groove 41 and the coordinates of any point B' on the second groove 42 can be obtained, and thus the trajectory curves of the first groove 41 and the second groove 42 can be obtained.

[0282] Some embodiments of the present application also provide a refrigerator comprising the cabinet assembly provided in any of the above embodiments.

[0283] The refrigerator provided by the embodiments of the present application comprises the box body assembly provided by any of the embodiments of the present application, and has the beneficial effects of the box body assembly.

[0284] Based on the above embodiments of the present application, the technical features of one of the embodiments can be beneficially combined with one or more of the other embodiments without explicit negation or conflict.

[0285] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced by equivalents without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A housing assembly, characterized in that, include: Box (10); and A door (20) is rotatably connected to the housing (10). The door (20) includes a first side (201), a second side (202), and a third side (203). The first side (201) and the second side (202) are arranged opposite to each other, and the first side (201) is adjacent to the housing (10). The first side (201) and the third side (203) intersect to form a first edge (21) extending along the third direction (Z). The second side (202) and the third side (203) intersect to form a second edge (22) extending along the third direction (Z). When the door (20) moves from a fully closed state to a fully open state, the movement trajectory of the first edge (21) forms a first trajectory line (204), and the movement trajectory of the second edge (22) forms a second trajectory line (205). The first trajectory line (204) does not exceed the first reference plane (F1). The second trajectory line (205) does not exceed the second reference plane (F2); wherein, the first reference plane (F1) is located between the box (10) and the door (20), the first reference plane (F1) is parallel to the first direction (X), and the distance between the first reference plane (F1) and the box (10) is 12%T to 25%T; the second reference plane (F2) is located outside the box (10), the second reference plane (F2) is parallel to the second direction (Y), and the distance between the second reference plane (F2) and the box (10) is less than 1%T; wherein, T is the distance between the first edge (21) and the second edge (22), the first direction (X) is perpendicular to the second direction (Y), and both the first direction (X) and the second direction (Y) are perpendicular to the third direction (Z), and the third direction (Z) is the height direction of the box (10).

2. The housing assembly according to claim 1, characterized in that, The first edge (21) is located at point A1 on the first trajectory line (204) when the door (20) is fully closed, and the distance between point A1 and the box (10) is 16%T to 25%T.

3. The housing assembly according to claim 1, characterized in that, The straight-line distance nA5 between point A5 and point n is 27%T to 56%T; wherein, point A5 is the position of the first edge (21) on the first trajectory line (204) when the door (20) is fully open, and point n is the intersection of the second side (202) when the door (20) is fully closed and the first side (201) when the door (20) is fully open.

4. The housing assembly according to claim 1, characterized in that, The straight-line distance mB1 between point m and point B1 is less than 0.07%T; wherein, point B1 is the position of the second edge (22) on the second trajectory line (205) when the door (20) is fully closed, and point m is the intersection of the second side (202) when the door (20) is fully closed and the second side (202) when the door (20) is fully open.

5. The housing assembly according to claim 1, characterized in that, The first trajectory line (204) is tangent to the first reference plane (F1), and the tangency point is point A2; when the opening angle of the door (20) is 8° to 20°, the first edge (21) is located at point A2.

6. The housing assembly according to claim 1, characterized in that, When the opening angle of the door (20) is 20° to 40°, the first edge (21) is located at point A3 on the first trajectory line (204), and point A3 is the intersection of the first trajectory line (204) and the first side surface (201) of the door (20) in the fully closed state.

7. The housing assembly according to claim 3, characterized in that, When the opening angle of the door (20) is 90°, the first edge (21) is located at point A4 on the first trajectory line (204). The straight distance KA4 between point A4 and point K is greater than the straight distance nA5. Point K is the intersection of the second side (202) of the door (20) in the fully closed state and the first side (201) of the door (20) when the opening angle is 90°.

8. The housing assembly according to claim 4, characterized in that, The straight-line distance FB1 between point B1 and point F is greater than the straight-line distance mB1; wherein, point F is the intersection of the second side (202) of the door (20) in the fully closed state and the second side (202) of the door (20) when the opening angle is 90°.

9. The housing assembly according to claim 6, characterized in that, The projection length of the line connecting points A3 and A4 in the second direction (Y) accounts for 60% to 65% of the projection length of the line connecting points A3 and A5 in the second direction (Y); wherein, point A4 is the position of the first edge (21) on the first trajectory line (204) when the door (20) is opened at an angle of 90°, and point A5 is the position of the first edge (21) on the first trajectory line (204) when the door (20) is fully opened.

10. The housing assembly according to claim 1, characterized in that, The distance between the first trajectory line (204) and the second reference plane (F2) increases as the opening angle of the door (20) increases, and the distance between the first trajectory line (204) and the box (10) first decreases and then increases as the opening angle of the door (20) increases.

11. The housing assembly according to claim 10, characterized in that, The first trajectory line (204) includes a first arc segment, a second arc segment, and a third arc segment connected in sequence from the door (20) in a fully closed state to a fully open state. The first arc segment is constructed as a quadratic function curve protruding towards the box (10); the second arc segment and the third arc segment are both constructed as circular arc segments.

12. The housing assembly according to claim 11, characterized in that, The first arc segment is the arc segment from point A1 to point A3, the second arc segment is the arc segment from point A3 to point A4, and the third arc segment is the arc segment from point A4 to point A5; wherein, Point A1 is the position where the first edge (21) is located on the first trajectory line (204) when the door (20) is fully closed; Point A3 is the position where the first edge (21) is located on the first trajectory line (204) when the opening angle of the door (20) is 20° to 40°. Point A4 is the position of the first edge (21) on the first trajectory line (204) when the door (20) is opened at an angle of 90°; Point A5 is the position where the first edge (21) is located on the first trajectory line (204) when the door (20) is fully open.

13. The housing assembly according to claim 11 or 12, characterized in that, The curvature of the second arc segment is greater than that of the third arc segment, and the arc length of the second arc segment is greater than that of the third arc segment.

14. The housing assembly according to claim 1, characterized in that, The housing assembly further includes a shaft assembly (30) and a track groove group (40). The shaft assembly (30) is disposed in one of the door body (20) and the housing (10), and the track groove group (40) is disposed in the other of the door body (20) and the housing (10). The shaft assembly (30) includes a first shaft (31) and a second shaft (32), and the track groove group (40) includes a first groove (41) and a second groove (42). The first shaft (31) is configured to move relative to the first groove (41) within the first groove (41) as the door body (20) is opened and closed, and the second shaft (32) is configured to move relative to the second groove (42) within the second groove (42) as the door body (20) is opened and closed.

15. The housing assembly according to claim 14, characterized in that, The setting area of ​​the shaft assembly (30) is within the quadrilateral nA5B5m formed by connecting points n, A5, B5, and m in sequence; wherein, point n is the intersection of the second side (202) of the door (20) in the fully closed state and the first side (201) of the door (20) in the fully open state; point A5 is the position of the first edge (21) on the first trajectory line (204) in the fully open state of the door (20); point B5 is the position of the second edge (22) on the second trajectory line (205) in the fully open state of the door (20); and point m is the intersection of the second side (202) of the door (20) in the fully closed state and the second side (202) of the door (20) in the fully open state.

16. The housing assembly according to claim 15, characterized in that, The setting area of ​​the shaft assembly (30) is within the quadrilateral cdgh formed by connecting points c, d, g, and h in sequence, wherein, The line cd connecting point c and point d is parallel to the line nm connecting point n and point m, and the line cd is offset by 7t to 9.5t relative to the line nm towards the inside of the quadrilateral nA5B5m. The line gd connecting point d and point g is parallel to the line mB5 connecting point m and point B5, and the line gd is offset by 4t to 6.5t relative to the line mB5 towards the inside of the quadrilateral nA5B5m. The line hg connecting point g and point h is parallel to the line A5B5 connecting point A5 and point B5, and the line hg is offset by 2t to 3t relative to the line A5B5 towards the inside of the quadrilateral nA5B5m. The line ch connecting point c and point h is parallel to the line nA5 connecting point A5 and point n, and the line ch is offset by 2t to 3t relative to the line nA5 towards the inside of the quadrilateral nA5B5m. Where 0.9≤t≤1.1, T=50t.

17. The housing assembly according to claim 16, characterized in that, The axis of the first axis (31) is located in the triangle Q1Q6Q7 region formed by connecting points Q1, Q6 and Q7 in sequence, and the axis of the second axis (32) is located in the quadrilateral Q2Q3Q5Q4 region formed by connecting points Q2, Q3, Q5 and Q4 in sequence. Wherein, point Q1 is the center of the first circle (61), and the first circle (61) is a circle with radius R1 that is inside the quadrilateral cdgh, tangent to both the connecting line cd and the connecting line hg; The Q2 point is on the arc of the eighth circle (68) formed with the Q1 point as the center and S as the radius. The Q2 point is the center of the second circle (62). The second circle (62) is a circle with radius R2 that is inside the quadrilateral cdgh, tangent to the connecting line hg. The Q3 point is on the arc of the eighth circle (68), the Q3 point is the center of the third circle (63), the third circle (63) is a circle with radius R2 inside the quadrilateral cdgh, tangent to the connecting line cd; The point Q4 is the center of the fourth circle (64), which is a circle with radius R2 inside the quadrilateral cdgh, tangent to both the connecting line hg and the connecting line gd. The point Q5 is the center of the fifth circle (65), which is a circle with radius R2 inside the quadrilateral cdgh, tangent to both the connecting line cd and the connecting line gd. The point Q6 is on the arc of the ninth circle (69) formed with the point Q4 as the center and S as the radius. The point Q6 is the center of the sixth circle (66). The sixth circle (66) is a circle with radius R1 that is inside the quadrilateral cdgh, tangent to the connecting line hg. The Q7 point is on the arc of the tenth circle (70) formed with the Q5 point as the center and S as the radius. The Q7 point is the center of the seventh circle (67). The seventh circle (67) is a circle inside the quadrilateral cdgh, tangent to the connecting line cd, and with a radius of R1. R1 is the radius of the first axis (31), R2 is the radius of the second axis (32), S is the distance between the center of the first axis (31) and the center of the second axis (32), and S is selected based on the fact that the first groove (41) and the second groove (42) do not intersect.

18. The housing assembly according to claim 14, characterized in that, The coordinates of any point A'(x1',y1') on the first slot (41) in the xy rectangular coordinate system satisfy the following relationship: The xy rectangular coordinate system is a rectangular coordinate system established with the intersection of the second side (202) and the third side (203) of the door (20) in the fully closed state as the origin, the first direction (X) as the positive x-axis, and the second direction (Y) as the positive y-axis. θ is the opening angle of the door (20); ax is the x-coordinate of the axis center of the first axis (31) in the xy rectangular coordinate system; ay is the y-coordinate of the axis center of the first axis (31) in the xy rectangular coordinate system; x1 is the x-coordinate of any point on the first trajectory line (204) in the xy rectangular coordinate system, and y1 is the y-coordinate of any point on the first trajectory line (204) in the xy rectangular coordinate system; x2 is the x-coordinate of any point on the second trajectory line (205) in the xy rectangular coordinate system, and y2 is the y-coordinate of any point on the second trajectory line (205) in the xy rectangular coordinate system.

19. The housing assembly according to claim 14, characterized in that, The coordinates of any point B'(x2',y2') on the second groove (42) in the xy rectangular coordinate system satisfy the following relationship: The xy rectangular coordinate system is a rectangular coordinate system established with the intersection of the second side (202) and the third side (203) of the door (20) in the fully closed state as the origin, the first direction (X) as the positive x-axis, and the second direction (Y) as the positive y-axis. θ is the opening angle of the door (20); bx is the x-coordinate of the axis center of the second axis (32) in the xy rectangular coordinate system; by is the y-coordinate of the axis center of the second axis (32) in the xy rectangular coordinate system; x1 is the x-coordinate of any point on the first trajectory line (204) in the xy rectangular coordinate system, and y1 is the y-coordinate of any point on the first trajectory line (204) in the xy rectangular coordinate system; x2 is the x-coordinate of any point on the second trajectory line (205) in the xy rectangular coordinate system, and y2 is the y-coordinate of any point on the second trajectory line (205) in the xy rectangular coordinate system.

20. A refrigerator, characterized in that, Includes the housing assembly as described in any one of claims 1 to 19.

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