Box body assembly and refrigerator

Abstract

The utility model relates to a box body assembly and a refrigerator. The box body assembly comprises a box body; the door body comprises a first side face, a second side face and a third side face, the first side face and the third side face intersect to form a first edge extending in the third direction, and the second side face and the third side face intersect to form a second edge extending in the third direction; the first edge is configured to move from a completely closed state to a completely opened state along with the door body to form a first trajectory, the first trajectory does not exceed a first reference plane, the second edge is configured to move from the completely closed state to the completely opened state along with the door body to form a second trajectory, and the second trajectory does not exceed a second reference plane; wherein the first reference plane is located between the refrigerator body and the door body, the distance between the first reference plane and the refrigerator body is 12% T-25% T, the second reference plane is located on the outer side of the refrigerator body, and the distance between the second reference plane and the refrigerator body is smaller than 0.01% T. Under the condition that the distance between the box body and the surrounding environment such as the wall is close to zero, the door body can be well opened.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a box assembly and a refrigerator. Background Art

[0002] The door is one of the important components of the refrigerator system. It is mainly used to open or close the access port, store food, and set touch and display devices. Under normal circumstances, the door and the cabinet are fixed together with the help of hinges, and the door can rotate in a circle around the hinge axis. In some cases, the refrigerator is placed in the corner, and the refrigerator needs to be kept at a certain distance from the wall to ensure that the door can be opened and its angle is greater than 90°. In order to save space in the house, built-in refrigerators are one of the main development trends in the future. However, for built-in refrigerators, if the traditional hinge mechanism is used, the refrigerator door will not be opened well. Utility Model Content

[0003] Some embodiments of the utility model provide a cabinet assembly and a refrigerator, which can enable a door to be opened well when the distance between the cabinet and the surrounding environment such as a wall is close to zero.

[0004] In one aspect of the present invention, a box assembly is provided, comprising:

[0005] The housing; and

[0006] A door body is rotatably connected to the box body, and the door body includes a first side surface, a second side surface and a third side surface, the first side surface is arranged opposite to the second side surface, and the first side surface is adjacent to the box body, the first side surface intersects with the third side surface to form a first edge extending along a third direction, and the second side surface intersects with the third side surface to form a second edge extending along the third direction; the first edge is configured to move with the door body from a fully closed state to a fully open state to form a first trajectory line, and the first trajectory line does not exceed a first reference plane, and the second edge is configured to move with the door body from a fully closed state to a fully open state to form a first trajectory line. Two trajectory lines, the second trajectory line does not exceed the second reference plane; wherein, the first reference plane is located between the box body and the door body, parallel to the first direction, and the distance between the first reference plane and the box body is 12%T~25%T, the second reference plane is located on the outside of the box body, parallel to the second direction, and the distance between the second reference plane and the box body is less than 0.01%T, wherein T is the distance between the first edge and the second edge, the first direction is perpendicular to the second direction, and the first direction and the second direction are both perpendicular to the third direction, and the third direction is the height direction of the box body.

[0007] In some embodiments, the position of the first edge located on the first trajectory line when the door body is fully closed is point A1, and the distance between point A1 and the box body is 16%T to 25%T.

[0008] In some embodiments, 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 on the first trajectory line when the door body is fully open, and point n is the intersection of the second side surface of the door body when it is fully closed and the first side surface of the door body when it is fully open.

[0009] In some embodiments, 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 on the second trajectory line when the door body is fully closed, and point m is the intersection of the second side surface of the door body in the fully closed state and the second side surface of the door body in the fully opened state.

[0010] In some embodiments, the first trajectory line is tangent to the first reference plane, and the tangent point is point A2. The first edge is configured to be located at point A2 when the door opening angle is 8° to 20°.

[0011] In some embodiments, the first edge is configured to be located at point A3 on the first trajectory line when the door body is opened at an angle of 20° to 40°, and point A3 is the intersection of the first trajectory line and the first side surface of the door body in a fully closed state.

[0012] In some embodiments, the first edge is configured to be point A4 on the first trajectory line when the door opening angle is 90°, the straight-line distance KA4 between point A4 and point K is greater than the straight-line distance nA5, and point K is the intersection of the second side surface of the door when the door is fully closed and the first side surface when the door opening angle is 90°.

[0013] In some embodiments, the straight-line distance FB1 between the point B1 and the point F is greater than the straight-line distance mB1, wherein the point F is the intersection of the second side surface of the door body when it is fully closed and the second side surface when the door body is opened at an angle of 90°.

[0014] In some embodiments, the projection length of the line between point A3 and point A4 in the second direction accounts for 60% to 65% of the projection length of the line between point A3 and point A5 in the second direction, wherein point A4 is the position of the first edge on the first trajectory line when the door body is opened at an angle of 90°, and point A5 is the position of the first edge on the first trajectory line when the door body is fully opened.

[0015] 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 box body first decreases and then increases with the increase of the opening angle of the door body.

[0016] In some embodiments, the first trajectory line includes a first arc segment, a second arc segment, and a third arc segment connected in sequence from the door body being in a fully closed state to a fully open state, and the first arc segment is constructed as a quadratic function curve protruding toward the box body; the second arc segment and the third arc segment are constructed as circular arc segments.

[0017] 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,

[0018] The point A1 is the position of the first edge on the first trajectory line when the door is in a fully closed state;

[0019] The point A3 is the position where the first edge is located on the first trajectory line when the door opening angle is 20° to 40°;

[0020] The point A4 is the position where the first edge is located on the first trajectory line when the door opening angle is 90°;

[0021] The point A5 is the position of the first edge on the first trajectory when the door body is in a fully opened state.

[0022] 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.

[0023] In some embodiments, the box assembly also includes an axis assembly and a track groove group, the axis assembly is arranged at one of the door body and the box body, and the track groove group is arranged at the other of the door body and the box body, the axis assembly includes a first axis and a second axis, and the track groove group includes a first groove and a second groove, the first axis is configured to move relative to the first groove in the first groove with the switch of the door body, and the second axis is configured to move relative to the second groove in the second groove with the switch of the door body.

[0024] In some embodiments, the setting area of ​​the shaft assembly is within the range of a quadrilateral nA5B5m formed by connecting points n, A5, B5, and m in sequence; wherein, point n is the intersection of the second side surface of the door body in a fully closed state and the first side surface of the door body in a fully open state; point A5 is the position of the first edge on the first trajectory line when the door body is fully open; point B5 is the position of the second edge on the second trajectory line when the door body is fully open; point m is the intersection of the second side surface of the door body in a fully closed state and the second side surface of the door body in a fully open state.

[0025] In some embodiments, the setting area of ​​the shaft assembly is within the range of a quadrilateral cdgh formed by sequentially connecting points c, d, g, and h, wherein:

[0026] The line cd connecting the point c and the point d is parallel to the line nm connecting the point n and the point m, and the line cd is offset by 7t to 9.5t toward the inside of the quadrilateral nA5B5m relative to the line nm;

[0027] The line gd connecting the point d and the point g is parallel to the line mB5 connecting the point m and the point B5, and the line gd is offset by 4t to 6.5t toward the inside of the quadrilateral nA5B5m relative to the line mB5;

[0028] The line hg connecting the point g and the point h is parallel to the line A5B5 connecting the point A5 and the point B5, and the line hg is offset by 2t to 3t toward the inside of the quadrilateral nA5B5m relative to the line A5B5;

[0029] The line ch connecting the point c and the point h is parallel to the line nA5 connecting the point A5 and the point n, and the line ch is offset 2t to 3t toward the inside of the quadrilateral nA5B5m relative to the line nA5;

[0030] Among them, 0.9≤t≤1.1, T=50t.

[0031] In some embodiments, the axis center of the first axis is located at a triangle Q1 Q6Q7 area formed by sequentially connecting points Q1, Q6, and Q7, and the axis center of the second axis is located at a quadrilateral Q2Q3Q5Q4 area formed by sequentially connecting points Q2, Q3, Q5, and Q4;

[0032] The point Q1 is the center of the first circle, and the first circle is a circle within the quadrilateral cdgh, tangent to the connecting line cd and the connecting line hg, and having a radius of R1;

[0033] The point Q2 is on the arc of the eighth circle formed with the point Q1 as the center and S as the radius, and the point Q2 is the center of the second circle, and the second circle is a circle in the quadrilateral cdgh, tangent to the connecting line hg, and with a radius of R2;

[0034] The point Q3 is on the arc of the eighth circle with the point Q1 as the center and S as the radius, and the point Q3 is the center of the third circle, and the third circle is a circle with a radius of R2 that is inside the quadrilateral cdgh and tangent to the connecting line cd;

[0035] The point Q4 is the center of the fourth circle, and the fourth circle is a circle within the quadrilateral cdgh, tangent to both the connecting line hg and the connecting line gd, and having a radius of R2;

[0036] Q5 is the center of the fifth circle, which is a circle within the quadrilateral cdgh, tangent to the connecting lines cd and gd, and has a radius of R2;

[0037] The point Q6 is on the arc of the ninth circle with the point Q4 as the center and S as the radius, and the point Q6 is the center of the sixth circle, which is a circle within the quadrilateral cdgh, tangent to the connecting line hg, and with a radius of R1;

[0038] The point Q7 is on the arc of the tenth circle with the point Q5 as the center and S as the radius, and the point Q7 is the center of the seventh circle, and the seventh circle is a circle with a radius of R1 that is inside the quadrilateral cdgh, tangent to the connecting line cd;

[0039] R1 is the radius of the first axis, R2 is the radius of the second axis, S is the distance between the axis center of the first axis and the axis center of the second axis, and S is selected based on the fact that the first groove and the second groove do not intersect.

[0040] 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:

[0041]

[0042] The xy rectangular coordinate system is a rectangular coordinate system established with the intersection of the second side surface and the third side surface 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 axis in the xy rectangular coordinate system;

[0045] ay is the y coordinate of the center of the first axis 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]

[0050] The xy rectangular coordinate system is a rectangular coordinate system established with the intersection of the second side surface and the third side surface 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;

[0051] θ is the opening angle of the door body;

[0052] bx is the x coordinate of the center of the second axis in the xy rectangular coordinate system;

[0053] by is the y coordinate of the center of the second axis in the xy rectangular coordinate system;

[0054] 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;

[0055] 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.

[0056] In one aspect of the present invention, a refrigerator is provided, comprising the above-mentioned cabinet assembly.

[0057] Based on the above technical solution, the utility model has at least the following beneficial effects:

[0058] In some embodiments, the distance between the first reference plane and the box body is set based on the thickness of the door body, and the distance between the second reference plane and the box body is set. The positions of the first reference plane and the second reference plane can be flexibly adjusted according to different specifications of the door body. When the distance between the box body and the surrounding walls or cabinets is close to zero, the door body can first move toward the box body for a distance and then open away from the box body, thereby achieving better opening of the door body and preventing the door body from interfering with the wall or cabinet during opening and closing. Excessive extrusion and wear on the seals provided on the door body can also be prevented, thereby increasing the service life of the seals. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0060] Figure 1 A schematic diagram of a box assembly provided according to some embodiments of the utility model;

[0061] Figure 2 A schematic diagram of a rotating connection portion provided according to some embodiments of the utility model;

[0062] Figure 3 A schematic diagram of shaft groove assembly according to some embodiments of the utility model;

[0063] Figure 4 A simplified schematic diagram of the rotating connection portion of the door body in a fully closed state according to some embodiments of the utility model;

[0064] Figure 5 A simplified schematic diagram of a door body in a state of opening at a first angle according to some embodiments of the utility model;

[0065] Figure 6 A simplified schematic diagram of a door body in a state of opening at a second angle according to some embodiments of the utility model;

[0066] Figure 7 It is a simplified schematic diagram of a door body provided in some embodiments of the utility model in a state of opening at a third angle;

[0067] Figure 8 A simplified schematic diagram of a door body in a fourth open angle state according to some embodiments of the present utility model;

[0068] Fig. 9 A schematic diagram of the position area of ​​the first axis and the second axis provided according to some embodiments of the utility model;

[0069] Fig.10 It is a simplified schematic diagram of the axis and track groove provided in different coordinate systems according to some embodiments of the present utility model.

[0070] The reference numerals in the accompanying drawings are described as follows:

[0071] 10-box body; 101-access opening side; 102-external side; 20-door body; 201-first side; 202-second side; 203-third side; 204-first trajectory line; 205-second trajectory line; 21-first edge; 22-second edge; 30a-hinge; 30-axis assembly; 31-first axis; 32-second axis; 40a-slot plate; 40-track slot group; 41-first slot; 42-second slot; 50-wall; 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.

[0072] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0073] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0074] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0075] In the present invention, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0076] All terms (including technical terms or scientific terms) used in the present invention have the same meanings as those understood by ordinary technicians in the field to which the present invention belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0077] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0078] Figure 1 Schematic diagram of the structure of some embodiments of the box assembly of the utility model. Figure 1 In some embodiments, the box assembly includes a box body 10 and a door body 20 .

[0079] The box body 10 has a take-in / take-out opening, and the door body 20 is arranged at the take-in / take-out opening.

[0080] The door body 20 is rotatably connected to the box body 10 .

[0081] The rotationally connected side of the door body 20 and the box body 10 includes a first edge 21 and a second edge 22 extending along the third direction Z.

[0082] The third direction Z is parallel to the height direction of the box body 10 and 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 body 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 body 10 and the door body 20.

[0083] exist Figure 1 In the illustrated embodiment, two groups of door bodies 20 are arranged on the box body 10 along the third direction Z at intervals, and each group of door bodies 20 includes two door bodies 20 arranged side by side along the first direction X.

[0084] refer to Figure 2In some embodiments, the door body 20 is rotatably connected to the box body 10 via a hinge structure. The hinge structure includes a hinge 30a and a slot plate 40a. The hinge 30a is provided at one of the door body 20 and the box body 10, and the slot plate 40a is provided at the other of the door body 20 and the box body 10.

[0085] exist Figure 2 In the illustrated embodiment, the hinge 30a is disposed on one side of the box body 10 in the first direction X and located at the top of the box body 10, and the groove plate 40a is disposed on one side of the door body 20 in the first direction X and located at the top of the door body 20.

[0086] refer to Figure 3 In some embodiments, the hinge 30a includes an axis assembly 30, the axis assembly 30 includes a first axis 31 and a second axis 32, and a track groove group 40 is provided on the groove plate 40a, and the track groove group 40 includes a first groove 41 and a second groove 42. The first axis 31 is configured to move relative to the first groove 41 in the first groove 41 along with the switch of the door body 20, and the second axis 32 is configured to move relative to the second groove 42 in the second groove 42 along with the switch of the door body 20.

[0087] exist Figure 3 In the illustrated embodiment, the first shaft 31 and the second shaft 32 are provided on the box body 10, and the first groove 41 and the second groove 42 are provided on the door body 20. When the door body 20 is opened relative to the box body 10, the first shaft 31 and the second shaft 32 are stationary, and the first groove 41 and the second groove 42 move with the door body 20. The first shaft 31 is in the first groove 41 and moves relative to the first groove 41. The second shaft 32 is in the second groove 42 and moves relative to the second groove 42.

[0088] refer to Figure 4 The box 10 is provided with a take-in / take-out opening, and the side where the take-in / take-out opening is located is a take-in / take-out opening side 101, which is also the front side of the box 10. The take-in / take-out opening side 101 extends in the first direction X and the third direction Z. The box 10 also includes an outer side surface 102, which is connected to the take-in / take-out opening side 101 and is a side surface adjacent to the surrounding installation environment. The outer side surface 102 extends in the second direction Y and the third direction Z.

[0089] The door body 20 includes a first side surface 201, a second side surface 202 and a third side surface 203. The first side surface 201 is disposed opposite to the second side surface 202 and is adjacent to the box body 10 relative to the second side surface 202. The third side surface 203 is close to the part where the door body 20 and the box body 10 are rotatably connected.

[0090] The first side surface 201 is the back side of the door body 20, adjacent to the access opening side 101 of the box body 10. The first side surface 201 extends in the first direction X and the third direction Z. The second side surface 202 is the front side 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 side 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.

[0091] The surrounding installation environment here may include a wall 50 and a cabinet, etc.

[0092] The first side surface 201 intersects with the third side surface 203 to form a first edge 21 extending along the third direction Z.

[0093] The second side surface 202 intersects with the third side surface 203 to form a second edge 22 extending along the third direction Z. The second edge 22 is farther away from the box body 10 than the first edge 21 .

[0094] Figure 4 It is a partial top view of the box body 10 and the door body 20, and the first edge 21 is Figure 4 The top view shown coincides with point A1, and the second edge 22 is at Figure 4 The top view shown coincides with point B1.

[0095] The first edge 21 is configured to move along with the door body 20 from the fully closed state to the fully opened state to form a first trajectory line 204 . The first trajectory line 204 in the second direction Y does not exceed the first reference plane F1 .

[0096] The second edge 22 is configured to move along with the door body 20 from the fully closed state to the fully opened state to form a second trajectory line 205 . The second trajectory line 205 in the first direction X does not exceed the second reference plane F2 .

[0097] The first reference plane F1 is located between the box body 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 box body 10 is 12%T to 25%T.

[0098] The second reference plane F2 is located outside the box 10, adjacent to the side where the box 10 is rotatably connected to the door 20. 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 0.01%T.

[0099] Wherein, T is the distance between the first edge 21 and the second edge 22 .

[0100] In some embodiments, T is equal to the thickness of the door body 20. Optionally, T=50t (mm), wherein 0.9≤t≤1.1.

[0101] The first direction X is perpendicular to the second direction Y. Both the first direction X and the second direction Y are perpendicular to the third direction Z. The third direction Z is the height direction of the box body 10 .

[0102] Since a seal is required to be provided on the first side 201 of the door body 20, a preset distance is required between the first side 201 of the door body 20 and the access opening side 101 of the box body 10 to install the seal to prevent the box body 10 from leaking cold, etc. In order to save installation space, the distance between the outside of the box body 10 and the surrounding environment is very small, close to zero, so as to achieve zero embedding installation of the box body 10. Therefore, it is assumed that when the door body 20 is initially opened, the angle area enclosed by the first side 201 and the third side 203 first moves toward the box body 10 for a period of time. At this time, the seal on the door body 20 will be squeezed toward the box body 10. If the squeezed amount of the seal exceeds its own compensation amount, the seal will have problems such as edge curling, folding or damage due to mechanical stress, wear, etc.

[0103] Based on this, in some embodiments, the first edge 21 moves with the door body 20 from a fully closed state to a fully open state to form a first trajectory line 204. The first trajectory line 204 will not exceed the first reference plane F1 in the second direction Y. The distance between the first reference plane F1 and the box body 10 is 12%T~25%T. The distance between the first reference plane F1 and the box body 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. When the distance between the box body 10 and the surrounding walls 50 or cabinets is close to zero, the door body 20 can first move toward the box body 10 for a distance and then open away from the box body 10, thereby achieving better opening of the door body 20 and preventing the door body 20 from interfering with the wall 50 or the cabinet during opening and closing. Excessive extrusion and wear of the seals provided on the door body 20 can also be prevented, thereby increasing the service life of the seals. In addition, a second trajectory line 205 formed by the second edge 22 as the door body 20 moves from a fully closed state to a fully opened state will not exceed the second reference plane F2 in the first direction X, and the distance between the second reference plane F2 and the box body 10 is less than 0.01%T. The distance between the second reference plane F2 and the box body 10 is set based on the thickness T of the door body 20, and the position of the second reference plane F2 can be flexibly adjusted according to different specifications of the door body 20, so that during the opening and closing process of the door body 20, the second edge 22 will not exceed the outer side surface 102 of the box body 10, thereby preventing the second edge 22 from interfering with the wall 50 or the cabinet body, so that the door body 20 can be better opened when the distance between it and the wall 50 or the cabinet body is close to zero.

[0104] refer to Figure 4In some embodiments, the first edge 21 is located at point A1 on the first track 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. Point A1 is located on the extension surface of the outer side surface 102 of the box 10 in the second direction Y.

[0105] In the above embodiment, the distance between point A1 and the box body 10 is set based on the thickness T of the door body 20. The distance between point A1 and the box body 10 can be flexibly adjusted according to different specifications of the door body 20, and is suitable for box body components of different specifications. The distance between point A1 and the cabinet 10 is set to 16%T~25%T, which is used to limit the initial position of the first edge 21 when the door body 20 is fully closed. 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, and realizes a better rotational connection between the door body 20 and the cabinet 10. It can also reserve space between the door body 20 and the cabinet 10 for installing the seal to prevent the door body 20 from causing excessive squeezing of the seal during the opening and closing process, and is used to determine the space utilization rate of the cabinet 10. The starting position of the door body 20 determines its movement trajectory during the entire opening and closing process, which in turn affects the availability of the internal space of the cabinet 10 and the layout of the external space; setting the distance between point A1 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, and preventing the door body 20 from interfering with the wall 50 or the cabinet, thereby achieving better switching.

[0106] refer to Figure 5 The door body 20 is opened at a first angle relative to the box body 10. The value range of the first angle can be optionally 8° to 20°.

[0107] refer to Figure 6 , the door body 20 is opened at a second angle relative to the box body 10. The second angle is greater than the first angle and less than 90°.

[0108] refer to Figure 7 , the door body 20 is opened at a third angle relative to the box body 10. The third angle is 90°.

[0109] refer to Figure 8 , the door body 20 is opened at a fourth angle relative to the box body 10. The fourth angle is the angle at which the door body 20 is fully opened. The fourth angle is greater than 90° and less than or equal to 110°. Optionally, the fourth angle is 110°.

[0110] refer to Figure 8When the door body 20 is fully opened, the straight-line distance nA5 between point A5 and point n is 27% T~56% T, wherein point A5 is the position of the first edge 21 on the first trajectory line 204 when the door body 20 is fully opened, and point n is the intersection of the second side surface 202 when the door body 20 is fully closed and the first side surface 201 when the door body 20 is fully opened.

[0111] In the above embodiment, since the larger the nA5 value is, the more convenient it is for the installation of the door body 20, but at the same time it also causes the door body 20 to move more toward the box body 10 during movement, thereby causing more space inside the box body 10 to be occupied. Therefore, the straight-line distance nA5 between point A5 and point n is limited to 27% T~56% T, which 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 will not occupy too much space inside the box body 10, and will not interfere with the wall 50 or the cabinet.

[0112] In some embodiments, 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 body 20 is fully closed, and point m is the intersection of the second side surface 202 when the door body 20 is fully closed and the second side surface 202 when the door body 20 is fully opened.

[0113] In the above embodiment, the straight-line distance mB1 between point m and point B1 is less than 0.07%T, which can reserve a safety distance for the second side 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 processing and manufacturing errors of the door body 20.

[0114] refer to Figure 5 In some embodiments, the first trajectory line 204 is tangent to the first reference plane F1, and the tangent point is point A2. The first edge 21 is configured to be located at point A2 when the opening angle of the door body 20 is 8° to 20°.

[0115] Since the distance between the first side surface 201 and the access port side 101 is set to 16%T~25%T, this distance can realize the setting of the seal, but in general, the thickness of the seal itself will be smaller than this distance, which is used for seal compensation, that is, the magnetic strip on the seal has a preset airbag compression amount when it is attracted to the box body 10.

[0116] Based on this, it is assumed that when the door body is initially opened, the angle area enclosed by the first side surface 201 and the third side surface 203 first moves toward the box body 10 for a while. At this time, the seal on the door body 20 will be squeezed toward the box body 10. If the amount of squeezing of the seal exceeds its own seal compensation amount, there is a risk of over-squeezing the seal. 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 point A2. On the other hand, taking into account the existence of door closers in actual applications (door closer: a hook-shaped part installed on one side of the hinge, the contact part with the hinge is designed with appropriate interference fit so that the door body can automatically close into place under the action of the door closer when the door reaches a certain angle), the resistance of the door closer needs to be overcome during the opening process of the door body 20. Usually, the action angle between the door closer and the door body 20 is between 6° and 11°. Therefore, point A2 is set at a position where the door opening force can be reduced after the door body 20 is separated from the door closer (that is, when the opening angle of the door body 20 is greater than 8°); in order to leave enough displacement margin for the subsequent movement stroke of the door body 20, ensure a smooth and easy feel when opening the door, and meet the requirement that the curvature of the edge trajectory curve is as smooth as possible, the position of point A2 does not exceed the position where the door body 20 opens at an angle of 20°. Therefore, the first edge 21 is configured to be located at point A2 when the opening angle of the door body 20 is 8° to 20°, which is beneficial to the setting of the seal and improving the service life of the seal, and is also beneficial for the door closer to automatically close the door body 20 when closing the door, and can provide displacement margin for the movement of the door body 20 after the opening angle is greater than 8°, making the door opening smooth and easy.

[0117] refer to Figure 6 In some embodiments, the first edge 21 is configured to be located at point A3 on the first trajectory line 204 when the opening angle of the door body 20 is 20° to 40°, and point A3 is the intersection of the first trajectory line 204 and the first side surface 201 of the door body 20 in the fully closed state.

[0118] In the above embodiment, after the first edge 21 moves with the door body 20 to the point A2 on the first trajectory 204, in order to ensure that the movement of the door body 20 can be smooth and stable, the curvature of the first trajectory 204 should meet the requirement of uniformity and no sudden changes as much as possible. Therefore, after the door body 20 leaves the point A2, it should be smooth and slow until the seal leaves the box. If the distance between the point A3 corresponding to the position where the seal leaves the box and the point A2 is too small, the curvature of the curve of the A2A3 arc segment from the point A2 to the point A3 will suddenly increase; if the distance between the point A3 corresponding to the position where the seal leaves the box and the point A2 is too small, the curvature of the curve of the A2A3 arc segment from the point A2 to the point A3 will suddenly increase; If the distance is too large, the curvature of the A3A5 arc segment from point A3 to point A5 will suddenly increase. The increase in the curvature of the A3A5 arc segment will cause the normal acceleration of the door body to increase, resulting in poor movement of the door body 20. Therefore, the first edge 21 is configured so that when the opening angle of the door body 20 is 20° to 40°, A3 falls on the first side surface 201 of the door body 20 in a fully closed state, so that the door body 20 can be smooth, stable and smooth during the opening process of the A2A3 arc segment along the first trajectory line 204 and the opening process along the A3A5 arc segment.

[0119] refer to Figure 7 In some embodiments, the first edge 21 is configured to be located at point A4 on the first trajectory 204 when the opening angle of the door body 20 is 90°, and the straight-line distance KA4 between point A4 and point K is greater than the straight-line distance nA5, and point K is the intersection of the second side surface 202 when the door body 20 is in a fully closed state and the first side surface 201 when the door body 20 is opened at an angle of 90°.

[0120] 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 box body 10 in the second direction Y, so as to reduce the space required for the internal moving parts (such as drawers) of the box body 10 to move outward, and improve the space utilization rate of the box body components. On the other hand, it is necessary to ensure that when the opening angle of the door body 20 is greater than 90°, there is enough gap between the second side surface 202 and the side surface of the wall 50.

[0121] Based on this, the first edge 21 is configured to be located at point A4 on the first trajectory 204 when the opening angle of the door body 20 is 90°, and the straight-line distance KA4 between point A4 and point K is greater than the straight-line distance nA5, which can reduce the space occupied by the moving parts inside the box body 10 when they move outward, improve the space utilization of the box body assembly, and also enable the second side 202 to have sufficient clearance with the side of the wall 50 when the opening angle of the door body 20 is greater than 90°.

[0122] refer to Figure 7In some embodiments, 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 surface 202 when the door body 20 is in a fully closed state and the second side surface 202 when the door body 20 is opened at an angle of 90°.

[0123] In the above embodiment, 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 point F, and the distance between point F and the third side surface 203 of the door body 20 in the fully closed state is the straight-line distance FB1.

[0124] In order to improve the utilization rate of the refrigerator space, the straight-line 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 surface of the outer side surface 102 of the cabinet 10 in the second direction Y, the less space the door body 20 occupies. When the door body 20 is opened at an angle greater than 90° (for example, 90° to 110°), it is necessary to leave enough clearance between the second side surface 202 and the side surface of the wall 50, that is, the second side surface 202 will not collide with the side surface of the wall 50, so FB1 should be greater than mB1. Therefore, the straight-line distance FB1 between point B1 and point F is greater than the straight-line distance mB1, which can not only minimize the space occupied by the door body 20, but also prevent the door body 20 from colliding with the wall 50 or the cabinet when the opening angle is greater than 90°.

[0125] In some embodiments, the projection length of the line between point A3 and point A4 in the second direction Y accounts for 60% to 65% of the projection length of the line between point A3 and point A5 in the second direction Y, wherein point A4 is the position where the first edge 21 is configured to be located on the first trajectory line 204 when the opening angle of the door body 20 is 90°, and point A5 is the position where the first edge 21 is located on the first trajectory line 204 when the door body 20 is fully opened.

[0126] Since point A3 is the point where the seal leaves the box body, the movement of the door body 20 on the arc segment from point A3 to point A5 can be regarded as its entire movement in the second direction Y. The projection length of the line between point A3 and point A4 in the second direction Y is set to 60% to 65% of the projection length of the line between point A3 and point A5 in the second direction Y. This can make the arc segment between point A3 and point A4 as smooth as possible, prevent sudden changes, and make the opening and closing of the door body 20 smoother.

[0127] 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 box body 10 first decreases and then increases as the opening angle of the door body 20 increases.

[0128] In the above embodiment, the movement position of the door body 20 is controlled by setting the shape of the first trajectory line 204, so that the opening and closing of the door body 20 is smoother and the door body 20 is prevented from interfering with the wall 50 or the cabinet during the opening and closing process, thereby realizing zero-embedded installation of the box body 10.

[0129] In some embodiments, 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 body 20 being in a fully closed state to a fully open state, and the first arc segment is constructed as a quadratic function curve protruding toward the box body 10; the second arc segment and the third arc segment are constructed as circular arc segments.

[0130] In the above embodiment, since the door body 20 is initially set to open, the angle area enclosed by the first side surface 201 and the third side surface 203 first moves toward the box body 10 for a period of time, and then moves away from the box body 10. Therefore, the first arc segment is constructed in the form of a quadratic function curve protruding toward the box body 10, so as to plan the movement route of the door body 20, and the form of the quadratic function curve can make the opening and closing action of the door body 20 smoother and more stable. The second arc segment and the third arc segment are constructed as circular arc segments. In the process of the door body 20 continuing to open, the circular arc segment can make the door body 20 as close to the wall as possible within a limited space, thereby increasing the maximum opening angle of the door body 20, and can make the door body 20 move smoothly, reducing the impact between the door body 20 and the edge of the box body 20.

[0131] 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,

[0132] Point A1 is the position where the first edge 21 is located on the first track line 204 when the door body 20 is in a fully closed state;

[0133] Point A3 is when the door body 20 is opened at an angle of 20° to 40° and the first edge 21 is located at the first track line 204;

[0134] Point A4 is the position where the first edge 21 is located on the first track line 204 when the door body 20 is opened at an angle of 90°;

[0135] Point A5 is the position where the first edge 21 is located on the first track line 204 when the door body 20 is in the fully opened state.

[0136] In the above embodiment, when the door body 20 is opened from a fully closed state to 20°~40°, the first edge 21 runs along the first arc segment from point A1 to point A3, so that the door body 20 first moves slowly toward the box body 10 from the fully closed state, and then moves smoothly and slowly until the door body 20 leaves the box body 10 with the seal, thereby improving the stability of the door body 20 in the initial opening state. When the door body 20 is opened from 20°~40° to 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 opening 90° to opening to the maximum angle, the first edge 21 runs along the third arc segment, which is also a circular arc segment, which can make the door body 20 as close to the wall 50 as possible and increase the maximum opening angle of the door body 20.

[0137] 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.

[0138] 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. This can make the trajectory of the door body 20 closer to a straight line when it is closer to a fully open state, thereby reducing the outward projection distance of the door body 20, making the movement of the door body 20 smoother, and making it easier for the door body 20 to stably stick to the wall 50 or cabinet body, reducing collisions.

[0139] In some embodiments, the arc segment corresponding to the second arc segment is a minor arc. The arc segment corresponding to the third arc segment is a minor arc.

[0140] In the embodiment of the utility model, when the maximum opening angle of the door body 20 is within 110°, the box assembly can realize embedded opening and closing of the door.

[0141] According to the description of the above embodiment, 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 this corresponding relationship, when 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.

[0142] Since the distance T between the second edge 22 and the first edge 21 satisfies the following relationship:

[0143]

[0144] When 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.

[0145]

[0146] Therefore, when 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.

[0147] In some embodiments, the box assembly also includes an axis assembly 30 and a track groove group 40, the axis assembly 30 is disposed at one of the door body 20 and the box body 10, and the track groove group 40 is disposed at the other of the door body 20 and the box body 10, the axis assembly 30 includes a first axis 31 and a second axis 32, the track groove group 40 includes a first groove 41 and a second groove 42, the first axis 31 is configured to move relative to the first groove 41 in the first groove 41 with the switch of the door body 20, and the second axis 32 is configured to move relative to the second groove 42 in the second groove 42 with the switch of the door body 20.

[0148] In the above embodiment, the double axes arranged on the cabinet 10 and the double-track grooves arranged on the door body 20 are used to restrict the movement of the door body and realize the embedded opening and closing of the door body. This can greatly reduce the gap required to be reserved on both sides of the cabinet and realize zero-gap embedding, thereby providing technical support for the research and development of embedded refrigerators.

[0149] refer to Fig. 9 In some embodiments, the setting area of ​​the shaft assembly 30 is within the range of a quadrilateral nA5B5m formed by sequentially connecting point n, point A5, point B5, and point m.

[0150] Among them, point n is the intersection of the second side surface 202 of the door body 20 when it is in a fully closed state and the first side surface 201 of the door body 20 when it is in a fully opened state.

[0151] Point A5 is the position where the first edge 21 is located on the first track line 204 when the door body 20 is in the fully opened state.

[0152] Point B5 is the position where the second edge 22 is located on the second trajectory line 205 when the door body 20 is in the fully opened state.

[0153] Point m 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 of the door body 20 in the fully opened state.

[0154] In the above embodiment, since the first axis 31 and the second axis 32 cooperate with the first groove 41 and the second groove 42 to realize the movement of the door body 20 relative to the box body 10, no matter how the door body 20 moves, the first axis 31 and the second axis 32 can never leave the door body 20. Therefore, the setting area of ​​the axis assembly 30 is limited to the range of the quadrilateral nA5B5m formed by connecting points n, A5, B5, and m in sequence, which provides a reference basis for the setting position of the axis assembly 30, so that during the opening and closing process of the door body 20, the first axis 31 and the second axis 32 will never leave the door body 20, so that the door body 20 can move relative to the box body 10 along the planned path.

[0155] In some embodiments, the setting area of ​​the shaft assembly 30 is within the range of a quadrilateral cdgh formed by sequentially connecting points c, d, g, and h.

[0156] 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 toward the inside of the quadrilateral nA5B5m relative to the line nm.

[0157] 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 4t to 6.5t toward the inside of the quadrilateral nA5B5m relative to the line mB5.

[0158] 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 2t to 3t toward the inside of the quadrilateral nA5B5m relative to the line A5B5.

[0159] 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 2t to 3t toward the inside of the quadrilateral nA5B5m relative to the line nA5.

[0160] Among them, 0.9≤t≤1.1. T=50t.

[0161] Since the first side 201, the second side 202 and the third side 203 of the door body 20 need to be provided with components such as door frames or groove plates, the area enclosed by the quadrilateral nA5B5m needs to be reserved near the edge for installing components such as door frames or groove plates. In the above embodiment, the setting area of ​​the shaft assembly 30 is further limited to the range of the quadrilateral cdgh formed by connecting points c, d, g and h in sequence, which can provide a more accurate reference basis for the setting position of the shaft assembly 30, and is conducive to setting the axis center of the first axis 31 and the second axis 32 within a reasonable area of ​​the door body 2.

[0162] In some embodiments, the center of the first axis 31 is located at a triangle Q1Q6Q7 area formed by connecting points Q1, Q6, and Q7 in sequence, and the center of the second axis 32 is located at a quadrilateral Q2Q3Q5Q4 area formed by connecting points Q2, Q3, Q5, and Q4 in sequence.

[0163] The point Q1 is the center of the first circle 61 , and the first circle 61 is a circle within the quadrilateral cdgh, tangent to the connecting line cd and the connecting line hg, and has a radius of R1 .

[0164] Point Q2 is on the arc of the eighth circle 68 with point Q1 as the center and S as the radius, and point Q2 is the center of the second circle 62. The second circle 62 is a circle with a radius R2 that is inside the quadrilateral cdgh, tangent to the connecting line hg.

[0165] Point Q3 is on the arc of the eighth circle 68 with point Q1 as the center and S as the radius, and point Q3 is the center of the third circle 63. The third circle 63 is a circle with a radius R2 that is inside the quadrilateral cdgh and tangent to the connecting line cd.

[0166] Point Q4 is the center of the fourth circle 64. The fourth circle 64 is a circle within the quadrilateral cdgh, tangent to both the connecting line hg and the connecting line gd, and has a radius R2.

[0167] Q5 is the center of the fifth circle 65. The fifth circle 65 is a circle within the quadrilateral cdgh, tangent to both the connecting line cd and the connecting line gd, and has a radius R2.

[0168] Point Q6 is on the arc of the ninth circle 69 with point Q4 as the center and S as the radius, and point Q6 is the center of the sixth circle 66. The sixth circle 66 is a circle with a radius R1 that is inside the quadrilateral cdgh, tangent to the connecting line hg, and has a radius of R1.

[0169] Point Q7 is on the arc of the tenth circle 70 with point Q5 as the center and S as the radius, and point Q7 is the center of the seventh circle 67. The seventh circle 67 is a circle with a radius R1 that is inside the quadrilateral cdgh, tangent to the connecting line cd.

[0170] R1 is the radius of the first axis 31 , R2 is the radius of the second axis 32 , S is the distance between the axis center of the first axis 31 and the axis 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.

[0171] In the above embodiment, the radius of the first axis 31 and the radius of the second axis 32 may be the same or different.

[0172] Firstly, the setting positions of the first axis 31 and the second axis 32 can only be selected within the range enclosed by the quadrilateral cdgh. Some limit positions of the first axis 31 and the second axis 32 within the quadrilateral cdgh are determined by making some small circles with radii equal to the axis diameters of the first axis 31 and the second axis 32 and tangent to cdgh. According to the safety distance S between the first axis 31 and the second axis 32, an auxiliary circle with the small circle with the determined limit position as the center is used to determine another part of the limit positions of the first axis 31 and the second axis 32 within the quadrilateral cdgh. This method can more accurately select the setting positions of the first axis 31 and the second axis 32, providing a basis for selecting the setting positions of the first axis 31 and the second axis 32.

[0173] refer 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:

[0174]

[0175] 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.

[0176] θ is the opening angle of the door body 20 .

[0177] The coordinates of the axis A of the first axis 31 in the xy rectangular coordinate system are A(ax,ay).

[0178] ax is the x coordinate of the axis A of the first axis 31 in the xy rectangular coordinate system.

[0179] ay is the y coordinate of the axis A of the first axis 31 in the xy rectangular coordinate system.

[0180] The coordinates of any point u on the first trajectory line 204 in the xy rectangular coordinate system are u(x1, y1).

[0181] 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.

[0182] The coordinates of any point v on the second trajectory line 205 in the xy rectangular coordinate system are v(x2, y2).

[0183] 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.

[0184] Since the first shaft 31 and the second shaft 32 are fixed on the box body 10, when the door body 20 is in a fully closed state, the coordinates of the axis centers of the first shaft 31 and the second shaft 32 in the xy rectangular coordinate system can be known.

[0185] During the opening process of the door body 20, the first axis 31 moves relative to the first slot 41, and the second axis 32 moves relative to the second slot 42. The intersection of the second side surface 202 and the third side surface 203 in the open state of the door body 20 is taken as the origin, the extension direction of the second side surface 202 is taken as the positive direction of the x' axis, and the extension direction of the third side surface 203 is taken as the positive direction of the y' axis. ′ y ′ Relative rectangular coordinate system.

[0186] The embodiment of the utility model controls the movement position of the door body 20 by cooperating between two track grooves and two shafts. During the movement of the door body 20, the first shaft 31 and the second shaft 32 move in the first groove 41 and the second groove 42 on the groove plate 40a fixed to 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, whose positions coincide with the axis centers of the first shaft 31 and the second shaft 32 fixed to the box body 10, and these two points are at x ′ y ′ The coordinates in the relative rectangular coordinate system are the coordinates of the first axis 31 and the second axis 32 in the absolute coordinate system xy rectangular coordinate system when the door is fully closed, that is, the absolute positions of the two axes on the door remain unchanged during the movement of the door. Fig.10 shown.

[0187] According to the principle that the absolute positions of the two axes on the door body remain unchanged, the position of the door body movement can be determined by combining the first trajectory line 204 and the second trajectory line 205, and the shapes of the first groove 41 and the second groove 42 can be determined, providing a basis for the setting of the first groove 41 and the second groove 42.

[0188] 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:

[0189]

[0190] 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.

[0191] θ is the opening angle of the door body 20 .

[0192] The coordinates of the axis A of the first axis 31 in the xy rectangular coordinate system are A(ax,ay).

[0193] ax is the x coordinate of the axis A of the first axis 31 in the xy rectangular coordinate system.

[0194] ay is the y coordinate of the axis A of the first axis 31 in the xy rectangular coordinate system.

[0195] The coordinates of any point u on the first trajectory line 204 in the xy rectangular coordinate system are u(x1, y1).

[0196] 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.

[0197] The coordinates of any point v on the second trajectory line 205 in the xy rectangular coordinate system are v(x2, y2).

[0198] 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.

[0199] The principle of determining the second groove 42 is the same as that of determining the first groove 41 . The above method can relatively accurately determine the shapes of the second groove 42 and the first groove 41 .

[0200] According to the description of the above-mentioned embodiments, the cabinet assembly can change the position of the door body 20 rotating around the hinge axis according to different switching angles when the door body 20 is opened and closed, ensuring that the outermost side of the door body 20 does not exceed the outermost side of the cabinet 10, thereby providing technical support for the development and application of built-in refrigerators.

[0201] The embedded implementation is actually to control the movement position of the door body 20 by setting a specific trajectory curve. The embodiment of the utility model provides 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 double trajectory groove are obtained according to the geometric relationship.

[0202] In the embodiment of the utility model, there are several key points in determining the first edge 21. The embodiment of the utility model describes in detail the selection of points A1, A2, A3, A4 and A5 (the considerations and functions of the selection of each point) and the range of the points.

[0203] For point A1 and point A5: point A1 is the starting point of the first trajectory line 204, and point A5 is the end point of the first trajectory line 204. The selection of the starting point and the end point will not only affect the size and assembly method of the hinge module, the gap between the door body 20 and the wall 50, but also determine the overall movement position of the door body 20, thereby determining the space utilization rate of the box body 10.

[0204] Point A2 is the maximum edge twisting point allowed by the seal (to avoid excessive extrusion and wear of the seal): The selection of the position of point A2 must also take into account the existence of the door closer. The position of point A2 will also affect the smoothness of the door movement and the feel of opening the door.

[0205] Point A3 is the instantaneous position of the seal leaving the box: by limiting the distance between points A2 and A3, the sudden change of curvature of the first track line 204 of the first edge 21 can be avoided, thereby preventing the normal acceleration of the door body 20 from changing due to the sudden change of the curvature of the curve, thereby preventing the door body 20 from moving smoothly.

[0206] Point A4 is the position of the first edge 21 on the first trajectory 204 when the door is opened at an angle of 90°. The selection of point A4 affects the space occupied by the door in the box 10 when the door is opened at an angle of 90°, and the space occupied by the door 20 in the box 10 should be reduced. The position of point A4 also defines the side gap between the door 20 and the wall 50 to ensure that the door does not hit the wall when opened. Point A4 is a link between the upper and lower parts, and the curvature of the arc segment from point A3 to point A4 and the arc segment from point A4 to point A5 must be smooth and without sudden changes.

[0207] Some specific embodiments will be given below, which describe in detail the component features and assembly relationships of the box assembly, the determination of the running trajectories of the first edge 21 and the second edge 22 of the door body 20, the determination of the positions of the first axis 31 and the second axis 32, and the determination of the shapes of the first groove 41 and the second groove 42.

[0208] 1. Structural characteristics and assembly relationships of components:

[0209] The main body includes: a box body 10, a door body 20 and a wall body 50. The main matching parts are: a hinge 30a fixed on the box body 10, and a slot plate 40a fixed 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 on the hinge 30a move in the first slot 41 and the second slot 42 on the slot plate 40a respectively.

[0210] For the convenience of analysis, the entire assembly moving parts are simplified, such as Figure 4 Several special planes are defined: the box body 10 has a take-out side 101 and an outer side 102 of the box body relative to the door body 20 and the wall body 50 respectively; the side of the door body 20 close to the wall body 50 has a third side 203, the side close to the box body 10 has a first side 201, and the side close to the user has a second side 202.

[0211] The distance between the first side surface 201 and the access opening side 101 is 16%T to 25%T.

[0212] In practical applications, the distance between the first side surface 201 and the access opening side 101 is usually 9 mm to 11 mm. The thickness T of the door body is generally 45 mm to 55 mm.

[0213] The space between the first side surface 201 and the access opening side 101 is used to set a seal to prevent the refrigerator from leaking cold. For easy installation, a distance of 3%T to 7%T is reserved between the outer side surface 102 of the box and the side surface of the wall 50. Optionally, the distance reserved between the outer side surface 102 of the box and the side surface of the wall 50 is 2mm to 3mm.

[0214] A first reference plane F1 is provided between the access opening side 101 and the first side surface 201 , and a second reference plane F2 is provided between the outer side surface 102 of the box body 10 and the wall surface.

[0215] The distance between the first reference plane F1 and the access opening side 101 is f1, and the value range of f1 is 12%T to 25%T of the door thickness. Optionally, the distance between the first reference plane F1 and the access opening side 101 is f1, f1∈(7,11) mm.

[0216] The distance between the second reference plane F2 and the outer side surface 102 of the box body is f2, and f2 is less than 0.01% T. Optionally, the distance between the second reference plane F2 and the outer side surface 102 of the box body is f2, and f2∈(0,0.5) mm.

[0217] Under the action of external force, during the process of the door body 20 opening or closing, due to the limitation of the track groove, the movement of the side edge of the door body will form two side edge tracks. The third side surface 203 intersects with the first side surface 201 to form the first edge 21, and the third side surface 203 intersects with the second side surface 202 to form the second edge 22. The movement tracks of the first edge 21 and the second edge 22 are the first track line 204 and the second track line 205 respectively. The track of the first edge 21 will never cross the first reference plane F1, otherwise the seal will easily rub against the box body 10, resulting in the problem of the seal twisting; the track of the second edge 22 will never cross the second reference plane F2, so as to ensure that the door body 20 can be smoothly embedded with zero clearance.

[0218] In some embodiments, the maximum opening angle of the door body 20 ranges from 100° to 120°. Optionally, the maximum opening angle of the door body 20 is 110°.

[0219] In some embodiments, the thickness T of the door body is set to 50t mm, that is, the distance between the second side surface 202 and the first side surface 201 is 50t mm. Wherein, 0.9≤t≤1.1. Optionally, t=1.

[0220] 2. Determination of the first trajectory line 204 and the second trajectory line 205 corresponding to the first edge 21 and the second edge 22 of the door body 20 .

[0221] 2.1 First, determine the starting points A1 and B1 of the first trajectory line 204 and the second trajectory line 205. According to the above, the determination of points A1 and B1 is as follows: the distance between the first side surface 201 of the door body 20 and the access opening side 101 of the box body 10 is set to 9mm to 11mm, and a distance of 2mm to 3mm is reserved between the outer side surface 102 of the box body and the side surface of the wall.

[0222] like Fig. 9 As shown, 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 201 of the door body 20 when it is opened to the maximum angle and the second side 202 of the door body 20 when it is fully closed is point n, and the distance between point n and the third side 203 of the door body 20 when it is 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 nA5 value, the easier it is to install. However, it also makes the door body 20 move more toward the box body 10 when it moves, resulting in more space inside the box body 10 being occupied. Therefore, the value range of nA5 is 27%T~56%T. In some examples, the value range of nA5 is 15mm~25mm, and optionally, the value of nA5 is 15mm.

[0223] The intersection of the second side surface 202 of the door body 20 in the fully open state and the second side surface 202 of the door body 20 in the fully closed state is point m, and the distance between point m and the third side surface 203 of the door body 20 in the fully closed state is mB1, and mB1 is a reserved safety distance. In practical applications, in order to provide a larger tolerance range for door body production and avoid collision between the door body and the wall due to inadequate manufacturing, the value of mB1 is less than 0.07% of T. In some embodiments, the value range of mB1 is 0 to 3 mm. Optionally, the value of mB1 is 1 mm.

[0224] The starting point of the movement trajectory of the first edge 21 and the second edge 22, i.e., the position of point A1 and point B1, and the end point, i.e., the position of point A5 and point B5, are obtained from the position from the door body 20 being fully closed to the position from the door body 20 being opened to the maximum angle.

[0225] 2.2 Selection of special control points in the middle:

[0226] When designing the overall solution, taking into account practical issues such as effective use of space and smooth and easy opening and closing of the door, it is necessary to impose certain restrictions on the special positions of the door body during the opening and closing process.

[0227] 2.2.1 The maximum twist edge of the seal A2 point:

[0228] In actual applications, the distance between the first side surface 201 of the door body 20 and the access port side 101 of the box body 10 can be selected to be 9mm to 11mm. This distance is used to set the seal. Generally, the thickness of the seal itself will be 1mm to 3mm smaller than the distance, which is used as compensation for the seal. That is, the magnetic strip on the seal of the door body 20 has an airbag compression of 0.5mm to 3mm when it is attracted to the box body 10.

[0229] When the door is initially opened, the angle area enclosed by the first side surface 201 and the third side surface 203 will first move toward the box body 10. At this time, the seal on the door body 20 will be squeezed toward the box body 10. If the amount of squeezing of the seal exceeds its own seal compensation amount, there is a risk of the seal edge twisting. Therefore, the maximum edge twisting point of the seal shall not exceed the reference first reference plane F1 (the distance between the first reference plane F1 and the access port side 101 is f1, f1∈(7,11) mm).

[0230] In some embodiments, the distance between the first side surface 201 and the access opening side 101 is 10 mm, the distance f1 between the first reference plane F1 and the access opening side 101 is 9.4 mm, and the seal compensation amount of the selected seal is 1.5 mm. The maximum seal twisting amount (0.6 mm) is less than the seal compensation amount (1.5 mm), which can completely avoid the risk of seal twisting.

[0231] On the other hand, taking into account the existence of door closers in actual applications (door closer: a hook-shaped part installed on one side of the hinge, the contact part with the hinge is designed through appropriate interference fit so that the door body can automatically close into place under the action of the door closer when the door reaches a certain angle), the resistance of the door closer needs to be overcome during the opening process of the door body 20. Usually, the working angle between the door closer and the door body is 6° to 11°. In some embodiments, the working angle between the door closer and the door body is 8°.

[0232] Setting the seal's maximum twisted edge point A2 after the door body 20 is separated from the door closer can reduce the door opening force (i.e. the seal's maximum twisted edge point A2 needs to be set at a position where the door body 20 opens at a angle greater than 8°). In order to leave enough displacement margin for the subsequent movement of the door body 20, ensure a smooth and easy door opening feel, and meet the requirement that the curvature of the edge trajectory curve is as smooth as possible, the position of the seal's maximum twisted edge point A2 must not exceed a position where the door body 20 opens at an angle of 20°.

[0233] Specifically, in some embodiments, the point A2 is set at a position where the door body 20 is opened 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). Figure 4 and Figure 5 .

[0234] 2.3 Point A3 corresponding to the seal leaving position:

[0235] After the door body 20 moves to the point A2 with the maximum twist edge of the seal, in order to ensure that the movement of the door body 20 can be smooth and stable, the curvature of the edge trajectory curve should meet the basic requirement of uniformity and no sudden changes as much as possible. Therefore, after the door body 20 leaves the point A2 with the maximum twist edge of the seal, it should be smooth and slow until the seal leaves. If the distance between the point A3 where the seal leaves the box and the point A2 with the maximum twist edge of the seal is too small, the curvature of the curve of the A2A3 arc segment from point A2 to point A3 (the point from the point where the seal has the maximum twist edge to the point where the seal leaves the box) will suddenly increase; if the distance between the point A3 where the seal leaves the box and the point A2 with the maximum twist edge of the seal is too large, the curvature of the curve of the A3A5 arc segment from point A3 to point A5 (the point from the seal leaving the box to the end point) will suddenly increase; the increase in the curvature of the curve will cause the normal acceleration of the door body to increase, thereby causing the door body 20 to move poorly.

[0236] Point A3 falls on the first side surface 201 when the door body 20 is fully closed. Combined with the position of point A2 where the seal has the largest twist edge, point A3 where the seal leaves the box body 10 can be taken as the intersection of the first side surface 201 when the door body 20 is fully closed at an opening angle of 20° to 40°. In some embodiments, point A3 is set at the position of the first trajectory line 204 where the first edge 21 is located when the opening angle of the door body 20 is 35.3°. In the xy rectangular coordinate system, the coordinates of point A3 can be selected as (29.9t, 50t).

[0237] 2.4 The door opening angle is 90° corresponding to point A4:

[0238] When the door is opened at an angle of 90°, on the one hand, the second side surface 202 should be as close to the outer side surface 102 of the box as possible, so as to reduce the space required for the moving parts (such as drawers) inside the box 10 to move outward, thereby improving the space utilization of the refrigerator. On the other hand, it is necessary to ensure that when the door 20 is opened more than 90°, there is enough clearance between the second side surface 202 and the side of the wall. Based on the above two considerations, special control is required when the door is at the 90° position.

[0239] like Figure 7 As shown, 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 when the door body 20 is fully closed is K, and the distance between K and the third side surface 203 when the door body 20 is opened to 90° is KA4. From the above analysis (starting point and end point selection analysis), it can be seen 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 when the door body 20 is fully closed is point F, and the distance between point F and the third side surface 203 when the door body 20 is fully closed is FB1.

[0240] In order to improve the space utilization of the box, FB1 should be as small as possible, that is, when the door body 20 moves to the 90° position, the smaller the distance between the second side surface 202 and the outer side surface 102 of the box body 10, the less space the door body 20 occupies. When the door body 20 is opened more than 90° (90° to 110°), there is enough clearance between the second side surface 202 and the side surface of the wall, that is, the second side surface 202 will not collide with the side surface of the wall, so FB1 should be greater than mB1.

[0241] According to the above analysis, the curvature of the edge trajectory curve should meet the basic requirements of uniformity, smoothness and no mutation as much as possible, that is, to ensure that the curvature of the curve of the A3A4 segment and the A4A5 segment is as smooth as possible, so the position connecting the A3 point and the A4 point is extremely important, and the curvature of the curve is not allowed to mutate when passing through this position. Point A3 is the point where the seal leaves the box body, and the movement of the door body 20 in the A3A5 segment (in some embodiments, the door body opening angle 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, when a point on the door body 20 moves from the point where the seal leaves the box body (point A3) along the first edge 21 to the 90° position, its travel along the second direction Y (i.e., the y coordinate difference of the A3A4 segment curve) should occupy 60%~65% of the overall travel in the second direction Y (i.e., the y coordinate difference of the A1A4 curve) as much as possible, and the proportion selected in some embodiments is 62%.

[0242] Therefore, in some embodiments, the value range of KA4 is 20 mm to 30 mm, and optionally, the value of KA4 is 27.6 mm. The value range of FB1 is 3 mm to 10 mm, and optionally, the value of FB1 is 6.5 mm.

[0243] 3. Description of the trajectory curves of the two edges on the door body:

[0244] According to the above content, the position coordinates of several points A1A2A3A4A5 and B1 B2B3B4B5 on the motion trajectory of the first edge 21 and the second edge 22 are determined. It can be known from the analytical geometry analysis that there is a one-to-one functional relationship between the first edge 21 and the second edge 22. For example, if the position coordinates of a point on one edge are known, the position coordinates of the corresponding point on the other edge can be deduced. Since the distance between point B5 and point B1 of the second edge 22 on the x-axis and the y-axis is small, and its trajectory will never cross the second reference plane F2. In order to ensure the smooth and stable movement of the door body 20, the curvature of the inner and outer edge curves should be uniform and without sudden changes. The curvature of the second trajectory line 205 of the second edge 22 has a small range of variation, so its influence on the overall movement trend of the door body is small. Therefore, the following content will focus on the description of the first trajectory line 204 of the first edge 21.

[0245] 3.1 Relationship between the first edge 21 and the second edge 22:

[0246] Based on the fixed front wall 501 and the outer side 102 of the box, the following is established: Fig.10 In the xy rectangular coordinate system shown in the figure, the direction away from the side of the box to the center of the box is the positive direction of the x-axis, and the direction away from the front of the door to the front of the box is the positive direction of the y-axis. Assume that the thickness of the door is 50t, t∈[0.9,1.1], and take t=1 as an example. The angle of rotation of the door is θ, θ∈[0,110°]. In the top view, the projection of the first edge 21 of the door is a point u(x1, y1), and the trajectory formed by its movement process is A1A5. The projection of the second edge 22 of the door is a point v(x2, y2), and the trajectory formed by its movement process is B1 B5.

[0247] From the relationship between u and v:

[0248]

[0249] The coordinates of point v can be obtained from the coordinates of point u:

[0250]

[0251] 3.2 Description of the first trajectory line 204 of the first edge 21:

[0252] The movement process of the door body 20 is divided into three stages:

[0253] 3.2.1 Reference Figure 6 , the door body 20 is in a fully closed state (0°) - the instantaneous point at which the seal leaves the box body 10 (the opening angle of the door body 20 is 35.3°):

[0254] This stage corresponds to the first arc segment of the first trajectory line 204, which is the first arc segment A1A2A3. The above analysis has determined the value ranges of the starting point A1, the maximum twist edge point A2 of the seal and the point A3 where the seal leaves the box body, as well as the specific position coordinates selected in some embodiments.

[0255] In some embodiments, the first arc segment A1A2A3 is set as a curve with smooth curvature, and is simplified and fitted into a quadratic function curve with symmetry. Figure 6 , establish an x″y″ rectangular coordinate system, which is a coordinate system established with the intersection of the first side surface 201 and the third side surface 203 when the door body 20 is fully closed as the origin, with the direction away from the third side surface 203 pointing to the center of the door body as the positive direction of the x″ axis, and with the direction away from the first side surface 201 of the door body 20 pointing to the access opening side 101 of the box body 10 as the positive direction of the y″ axis. The quadratic function of the symmetry simplified and fitted by the first arc segment A1A2A3 is:

[0256] y=c1x2 +c2x+c3

[0257] Among them, the value range of c1 is -0.0046 to 0. The value range of c2 is 0 to 0.135. c3=0.

[0258] In some embodiments, the first arc segment A1A2A3 is simplified to fit the quadratic function of symmetry as follows:

[0259] y=-0.0028x 2 +0.081x

[0260] 3.2.2 The instantaneous point when the seal leaves the box (door opening angle 35.3°) - the door 20 is opened to 90 degrees (door opening angle 90°):

[0261] This stage corresponds to the second arc segment of the first trajectory line 204, which is the second arc segment A3A4. The above analysis has determined the value range of the instantaneous point A3 when the seal leaves the box body and the point A4 where the door body is opened at an angle of 90°, as well as the specific position coordinates selected in some embodiments.

[0262] refer to Fig.10 , establish an xy rectangular coordinate system, which 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 direction away from the third side 203 pointing to the center of the door body as the positive direction of the x-axis, and the direction away from the second side 202 pointing to the first side 201 as the positive direction of the y-axis.

[0263] The second arc segment A3A4 is set as a smooth curve with consistent curvature, and is simplified to be fitted as an arc segment with the center coordinates at (27t, 19.7t) and a radius of 30t to 31t. Optionally, the radius is 30.4t.

[0264] 3.2.3 The door 20 is opened to 90 degrees (the door opening angle is 90°) - the door 20 is opened to the preset maximum angle (the door opening angle is 110°):

[0265] This stage corresponds to the third arc segment of the first trajectory line 204, which is the third arc segment A4A5. The above analysis has determined the value range of point A4 corresponding to the position where the door body opens at an angle of 90° and point A5 corresponding to the fully open state of the door body, as well as the specific position coordinates selected in some embodiments.

[0266] The third arc segment A4A5 is set as a smooth curve with consistent curvature, which is a circular arc segment with a center coordinate of (14.4t, 11.7t) and a radius of 40t to 50t after simplified fitting. Optionally, the radius is 45t.

[0267] 4. Position selection of two axes:

[0268] According to the above-mentioned component assembly relationship, the first axis 31 and the second axis 32 on the hinge 30a are fixed on the box body 10, and cooperate with the first groove 41 and the second groove 42 opened in the groove plate 40a fixed on the door body 20, and move in the groove.

[0269] refer to Fig. 9 When the door body 20 moves from a fully closed state to a fully open position, the embedded movement of the door body 20 must be completed. The axis centers of the first axis 31 and the second axis 32 must always be on the door body 20, both in the fully closed state and in the fully open state. Therefore, the positions of the two axes are set within the range of the quadrilateral nA5B5m formed by the four points n, A5, B5, and m.

[0270] In actual applications, not any position within the thickness of 50t of the door body can be used to set the double axis. From the above analysis of the two edge trajectories, it can be seen that the distance between the double axis of the door body 20 and the second side surface 202 and the third side surface 203 during movement is relatively close and needs to be controlled.

[0271] The second side 202 of the door body needs to be provided with 3t to 4t thick glass, 2t to 3.5t thick door frame, and 2t to 3t thick groove plate in the direction toward the first side 201; the third side 203 needs to be provided with 2t to 3.5t thick door frame and 2t to 3t thick groove plate in the direction toward the center of the door body; a 2t to 3t groove plate needs to be set in the direction from the first side 201 to the second side 202. Based on this, the above restrictions are added when the door body 20 is in the fully closed state (the door body opening angle is 0°) and the door body 20 is in the fully opened state (the door body opening angle is 110°), and the dual-axis setting range is further narrowed to the cdgh range.

[0272] refer to Figure 8 Considering the setting of double grooves on the groove plate, the distance between the two axes of the double axis should be greater than 15t to avoid the intersection of the two track grooves. In order to make the double axis have a certain strength, its radius can be set to 2.5t~4t. 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 axes is 17.8t, and the axis radius is 3t.

[0273] The two axes are to be arranged within the cdgh range (in some embodiments, a right-angle trapezoid with an upper base of 3.1t, a lower base of 16.5t, and a height of 36.8t), and the distance between the axis centers of the two axes is S=17.8t, and the axis radius R1=R2=3t, so the optional range of the two axis centers is not large. The limit position of the axis is determined within the cdgh range to further narrow the range of the two axes. The specific method is as follows:

[0274] A first circle 61 with a radius of 3t is made tangent to the cd and hg edges. The coordinates of the center of the first circle 61 are (11.2t, 43.9t). Then, an eighth circle 68 with a radius of 17.8t is made with the center of the first circle 61 as the center. This results in a second circle 62 with a radius of 3t that is tangent to hg. The coordinates of the center of the second circle 62 are (17.3t, 27.2t). A third circle 63 with a radius of 3t that is tangent to cd is made. The coordinates of the center of the third circle 63 are (11.2t, 26.1t). A fourth circle 64 with a radius of 3t is made. The fourth circle 64 is tangent to the hg and gd edges. The coordinates of the center of the fourth circle 64 are (1 9.8t, 20.1t), and then make a ninth circle 69 with a radius of 17.8t with the fourth circle 64 as the center, and obtain a sixth circle 66 with a radius of 3t tangent to hg, and the coordinates of the center of the sixth circle 66 are (13.8t, 36.9t); make a fifth circle 65 with a radius of 3t, the fifth circle 65 is tangent to the gd and cd sides, and the coordinates of the center of the fifth circle 65 are (11.2t, 17t), and then make a tenth circle 70 with a radius of 17.8t with the center of the fifth circle 65 as the center, and obtain a seventh circle 67 with a radius of 3t tangent to cd, and the radius of the seventh circle 67 is (11.2t, 34.8t).

[0275] According to the above method, the possible ranges of the axis center of the first axis 31 and the axis center of the second axis 32 can be determined. Fig. 9 The possible range of the center of the first axis 31 is Fig. 9 The small triangle shown in is the area formed by the lines connecting the centers of the first circle 61, the sixth circle 66, and the seventh circle 67. The possible range of the axis of the second axis 32 is a small quadrilateral, that is, the area formed by the lines connecting the centers of the second circle 62, the third circle 63, the fifth circle 65, and the fourth circle 64.

[0276] The main idea of ​​the above method is that the first circle 61 to the seventh circle 67 can further narrow the formed cdgh range to further lock the position of the two axes. Since the axis radius is 3t and the axis centers of the two axes are 17.8t apart, and both axes can only be selected within the cdgh range, several small circles with a radius of 3t and tangent to the cdgh are first made to determine a part of the axis limit position on the cdgh, and then according to the distance of 17.8t between the two axes, auxiliary circles are made with the small circle at the determined limit position as the center to determine the other part of the limit position of the two axes.

[0277] In some embodiments, the position coordinates of the axis center of the first axis 31 in the xy coordinate system are A (39.4t, 12.6t); the position coordinates of the axis center of the second axis 32 in the xy coordinate system are B (22.4t, 17.9t).

[0278] 5. Double slot trajectory determination:

[0279] 5.1 Double-slot trajectory determination method:

[0280] The implementation of embedded design is actually to control the movement position of the door body 20 by cooperating between two curved grooves and two axes. During the movement of the door body 20, the first axis 31 and the second axis 32 on the hinge 30a move in the first groove 41 and the second groove 42 on the groove plate 40a fixed to the door body 20, so the two axes move relative to the door body 20. There are always two points on the moving door body 20, whose positions coincide with the axis centers of the first axis 31 and the second axis 32 of the hinge 30a fixed to the box body 10, and these two points are in the relative coordinate system x based on the second side surface 202 and the third side surface 203. ′ y ′ The coordinates in are the coordinates in the absolute coordinate system xy (the reference is the fixed front wall 501 and the outer side surface 102 of the box body) when the door is closed, that is, the absolute positions of the two axes on the door body remain unchanged during the movement of the door body. Fig.10 shown.

[0281] According to the principle that the absolute positions of the two axes on the door body remain unchanged, the double groove track can be determined by combining the first track line 204 of the first edge 21 and the second track line 205 of the second edge 22 to determine the position of the door body movement. The following is the specific derivation process:

[0282] Assuming that the door body is rotated to an angle of 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:

[0283] L1: y-xtanθ+x2tanθ-y2=0

[0284] Assuming that the door body is rotated to an angle of 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:

[0285] L2:

[0286] From the above description, it can be seen that in some embodiments, the positions of the two axes are selected as follows: the axis center position coordinates of the first axis 31 are A (39.4t, 12.6t), and the axis center position coordinates of the second axis 32 are B (22.4t, 17.9t).

[0287] So when the door body rotates to angle θ, let A'(x1',y1') and B'(x2',y2') be two points on the double groove track, then the position of the axis A and B in the relative coordinate system X'Y' is the position of A' and B' in the absolute coordinate system XY, from which we can get:

[0288] According to the distances from point A to the two lines L1 and L2, they are equal to the distances from A' to the x-axis and y-axis, respectively. That is, the distance from point A to line L1 is equal to the distance from A' to the x-axis. The distance from point A to line L2 is equal to the distance from A' to the y-axis.

[0289] From this we can get the coordinates of A'(x1',y1'):

[0290]

[0291] Similarly, the coordinates of B'(x2',y2') can be obtained:

[0292]

[0293] 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 then the trajectory curves of the first groove 41 and the second groove 42 can be obtained.

[0294] Some embodiments of the present utility model further provide a refrigerator, which includes the cabinet assembly provided in any of the above embodiments.

[0295] The refrigerator provided in the embodiment of the utility model includes the cabinet assembly provided in any embodiment of the utility model, and correspondingly has the beneficial effects of the cabinet assembly.

[0296] Based on the above-mentioned embodiments of the present invention, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0297] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A box assembly, characterized in that: include: a housing (10); and A door body (20) is rotatably connected to the box body (10), and the door body (20) includes a first side surface (201), a second side surface (202) and a third side surface (203), wherein the first side surface (201) and the second side surface (202) are arranged opposite to each other, and the first side surface (201) is adjacent to the box body (10), the first side surface (201) and the third side surface (203) intersect to form a first edge (21) extending along a third direction (Z), and the second side surface (202) and the third side surface (203) intersect to form a second edge (22) extending along the third direction (Z); the first edge (21) is configured to move with the door body (20) from a fully closed state to a fully open state to form a first trajectory line (204), and the first trajectory line (204) does not exceed a first reference plane (F1), and the second edge (22) is configured to move with the door body (20) from a fully closed state to a fully open state The door moves in a fully open state to form a second trajectory line (205), and the second trajectory line (205) does not exceed the second reference plane (F2); wherein the first reference plane (F1) is located between the box body (10) and the door body (20), parallel to the first direction (X), and the distance between the first reference plane (F1) and the box body (10) is 12%T to 25%T, the second reference plane (F2) is located on the outside of the box body (10), parallel to the second direction (Y), and the distance between the second reference plane (F2) and the box body (10) is less than 0.01%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), the first direction (X) and the second direction (Y) are both perpendicular to the third direction (Z), and the third direction (Z) is the height direction of the box body (10).

2. The box 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 body (20) is in a fully closed state, and the distance between point A1 and the box body (10) is 16%T to 25%T.

3. The box assembly according to claim 1, characterized in that: The straight-line distance nA5 between point A5 and point n is 27%T~56%T, wherein 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, and point n is the intersection of the second side surface (202) when the door body (20) is in a fully closed state and the first side surface (201) when the door body (20) is in a fully open state.

4. The box 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 body (20) is in a fully closed state, and point m is the intersection of the second side surface (202) when the door body (20) is in a fully closed state and the second side surface (202) when the door body (20) is in a fully opened state.

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

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

7. The box assembly according to claim 3, characterized in that: The first edge (21) is configured to be located at point A4 on the first trajectory (204) when the door body (20) is opened at an angle of 90°, and the straight-line distance KA4 between point A4 and point K is greater than the straight-line distance nA5, and point K is the intersection of the second side surface (202) when the door body (20) is in a fully closed state and the first side surface (201) when the door body (20) is opened at an angle of 90°.

8. The box assembly according to claim 4, characterized in that: The straight-line distance FB1 between the point B1 and the point F is greater than the straight-line distance mB1, wherein the point F is the intersection of the second side surface (202) of the door body (20) when it is in a fully closed state and the second side surface (202) when the door body (20) is opened at an angle of 90°.

9. The box assembly according to claim 6, characterized in that: The projection length of the line between point A3 and point A4 in the second direction (Y) accounts for 60% to 65% of the projection length of the line between point A3 and point 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 body (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 body (20) is fully opened.

10. The box 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 body (20) increases, and the distance between the first trajectory line (204) and the box body (10) first decreases and then increases as the opening angle of the door body (20) increases.

11. The box 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 body (20) being in a fully closed state to a fully open state, wherein the first arc segment is constructed in the form of a quadratic function curve protruding toward the box body (10); the second arc segment and the third arc segment are constructed as circular arc segments.

12. The box assembly according to claim 11, characterized in that: 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, The point A1 is the position of the first edge (21) located on the first trajectory line (204) when the door body (20) is in a fully closed state; The 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 body (20) is 20° to 40°; The point A4 is the position where the first edge (21) is located on the first trajectory line (204) when the door body (20) is opened at an angle of 90°; The 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 opened state.

13. The box assembly according to claim 11 or 12, characterized in that: 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.

14. The box assembly according to claim 1, characterized in that: It also includes an axis assembly (30) and a track groove group (40), wherein the axis assembly (30) is arranged at one of the door body (20) and the box body (10), and the track groove group (40) is arranged at the other of the door body (20) and the box body (10), wherein the axis assembly (30) includes a first axis (31) and a second axis (32), and the track groove group (40) includes a first groove (41) and a second groove (42), wherein the first axis (31) is configured to move relative to the first groove (41) in the first groove (41) along with the switch of the door body (20), and the second axis (32) is configured to move relative to the second groove (42) in the second groove (42) along with the switch of the door body (20).

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

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

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

18. The box assembly according to claim 14, characterized in that: The coordinates of any point A'(x1', y1') on the first groove (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 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; θ is the opening angle of the door body (20); ax is the x coordinate of the 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 box 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 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; θ is the opening angle of the door body (20); bx is the x coordinate of the 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: Comprising a box assembly according to any one of claims 1 to 19.

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