Door assembly and refrigeration equipment

Abstract

The invention relates to the technical field of refrigeration, and provides a door assembly and refrigeration device.The door assembly comprises a door body, the door body is provided with a first groove body and a second groove body, the first groove body comprises a first groove part and a second groove part which communicate with each other, and the second groove body comprises a third groove part and a fourth groove part which communicate with each other; the distance between the first center line of the first groove part and the front side of the door body in the thickness direction of the door body is C1; the distance between a second center line of the second groove part and the front side of the door body in the thickness direction of the door body is C2; the distance between a third center line of the third groove part and the front side of the door body in the thickness direction of the door body is C3; the distance between a fourth center line of the fourth groove part and the front side of the door body in the thickness direction of the door body is C4; due to the fact that the difference between the distance between the center line of the first groove body and the front side of the door body and the distance between the center line of the second groove body and the front side of the door body in the thickness direction of the door body is gradually increased, and the maximum value is only 8-23 mm, the hinge assembly can be made to be narrow and can be well matched with a thin door body.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to a door assembly and refrigeration equipment. Background Art

[0002] In order to improve the aesthetics of the living environment and save living space, people currently like to place refrigeration equipment (such as refrigerators) in home cabinets using an embedded installation method, so that the refrigerator is perfectly hidden in the home cabinets and better integrated with the home environment. In form, the kitchen forms a whole to improve the aesthetics of the living environment.

[0003] With technological advancements, smart products are increasingly becoming part of people's lives. Refrigerator doors are increasingly being fitted with decorative panels or display screens, increasing the overall thickness of the refrigerator. To reduce this thickness, the door needs to be thinned. However, due to the increased width of the existing hinge assembly, the hinge assembly does not fit the door, hindering installation. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides a hinge assembly for solving the problem that the existing hinge assembly is not compatible with thin door bodies.

[0005] The present invention also provides a refrigeration device.

[0006] A door assembly according to a first embodiment of the present invention comprises:

[0007] The door body is provided with a first slot body and a second slot body, the first slot body includes a first slot portion and a second slot portion that are connected along the first slot body, the second slot body includes a third slot portion and a fourth slot portion that are connected along the first slot body, and the third slot portion is located at the head end of the second slot body;

[0008] The distance between the first center line of the first groove portion in the thickness direction of the door body and the front side of the door body is C1; the distance between the second center line of the second groove portion in the thickness direction of the door body and the front side of the door body is C2; the distance between the third center line of the third groove portion in the thickness direction of the door body and the front side of the door body is C3; the distance between the fourth center line of the fourth groove portion in the thickness direction of the door body and the front side of the door body is C4; along the direction of the second groove body away from the head end of the second groove body, the difference between C3 and C1 gradually increases, and the difference between C3 and C1 varies in the range of 0.8-8mm; the difference between C4 and C2 gradually increases, and the difference between C4 and C2 varies in the range of 8-23mm.

[0009] According to the door assembly of an embodiment of the present invention, the distance between the first center line of the first groove portion in the thickness direction of the door body and the front side of the door body is C1; the distance between the second center line of the second groove portion in the thickness direction of the door body and the front side of the door body is C2; the distance between the third center line of the third groove portion in the thickness direction of the door body and the front side of the door body is C3; the distance between the fourth center line of the fourth groove portion in the thickness direction of the door body and the front side of the door body is C4; since the difference between C3 and C1 gradually increases as the second groove body moves away from the head end of the second groove body, and the difference between C4 and C2 gradually increases, the difference in the distance between the center line of the first groove body and the center line of the second groove body to the front side of the door body in the thickness direction of the door body gradually increases, and the maximum value is only 8-23mm, which allows the hinge assembly to be made narrower and can be well adapted to thin door bodies.

[0010] According to one embodiment of the present invention, along the direction of the second trough body away from the head end of the second trough body, the difference between C3 and C1 first gradually decreases and then gradually increases; based on the gradual decrease in the difference between C3 and C1, the range of change of the difference between C3 and C1 is 0-2.5mm; based on the gradual increase in the difference between C3 and C1, the range of change of the difference between C3 and C1 is 0-8mm.

[0011] According to one embodiment of the present invention, when the door body is in a closed state, the difference between C3 and C1 is 0.8-2.5 mm.

[0012] According to one embodiment of the present invention, when the door body is in an open state, the difference between C4 and C2 is 18-23 mm.

[0013] According to one embodiment of the present invention, the second groove body further includes a fifth groove portion, which is arranged at an end of the fourth groove portion away from the third groove portion and is connected to the fourth groove portion, and the fifth groove portion extends in an arc shape around the second center of the circle with a third radius.

[0014] According to one embodiment of the present invention, along the direction of the second groove body away from the head end of the second groove body, the distance between the fifth center line of the fifth groove portion in the thickness direction of the door body and the front side of the door body is C5, and the difference between the maximum values ​​of C5 and C2 is in the range of 20-23mm.

[0015] According to one embodiment of the present invention, the first groove portion extends in an arc shape around a first center with a first radius.

[0016] According to one embodiment of the present invention, the third groove portion extends in an arc shape around the first center with a second radius.

[0017] According to one embodiment of the present invention, the fourth groove portion extends along the first ellipse.

[0018] According to one embodiment of the present invention, the door body includes a door main body and a first hinge, the first hinge is fixed to a hinge side of the door main body, and the first slot body and the second slot body are located on the first hinge.

[0019] According to one embodiment of the present invention, the further embodiment includes:

[0020] The second hinge is provided with a first shaft and a second shaft, wherein the first shaft is inserted into the first groove, and the second shaft is inserted into the second groove.

[0021] Greater than or equal to 15 According to one embodiment of the present invention, the thickness of the door body is greater than or equal to 15 mm and less than or equal to 35 mm.

[0022] A refrigeration device according to an embodiment of the second aspect of the present invention includes a box body and any one of the door assemblies described above, wherein the box body is hinged to the door body through the first trough body and the second trough body.

[0023] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0024] According to the door assembly of an embodiment of the present invention, the distance between the first center line of the first groove portion in the thickness direction of the door body and the front side of the door body is C1; the distance between the second center line of the second groove portion in the thickness direction of the door body and the front side of the door body is C2; the distance between the third center line of the third groove portion in the thickness direction of the door body and the front side of the door body is C3; the distance between the fourth center line of the fourth groove portion in the thickness direction of the door body and the front side of the door body is C4; since the difference between C3 and C1 gradually increases as the second groove body moves away from the head end of the second groove body, and the difference between C4 and C2 gradually increases, the difference in the distance between the center line of the first groove body and the center line of the second groove body to the front side of the door body in the thickness direction of the door body gradually increases, and the maximum value is only 8-23mm, which allows the hinge assembly to be made narrower and can be well adapted to thin door bodies.

[0025] Furthermore, by adopting the above-mentioned door component, the thickness of the door component can be effectively reduced, the volume of the refrigeration equipment can be reduced, and the competitiveness of the product can be enhanced.

[0026] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 is a schematic diagram of an exploded structure of a hinge assembly provided by an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the connection relationship between the first shaft, the second shaft, and the first hinge provided by an embodiment of the present invention;

[0030] Figure 3 is a structural schematic diagram of a first hinge provided by an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the three-dimensional structure of a hinge assembly provided by an embodiment of the present invention installed in a refrigeration device;

[0032] Figure 5 yes Figure 4 Schematic diagram of the partially enlarged structure of part A in the middle;

[0033] Figure 6 This is a schematic top view of the structure of a hinge assembly provided by an embodiment of the present invention installed in a refrigeration device;

[0034] Figure 7 yes Figure 6 Schematic diagram of the partial enlarged structure of part B in the middle;

[0035] Figure 8 1 is a structural diagram of the first hinge and the second hinge of the hinge assembly provided by an embodiment of the present invention in an installed state;

[0036] Figure 9 1 is a schematic structural diagram of a hinge assembly provided by an embodiment of the present invention in an initial position; at this time, the door body is in a closed position; the dotted lines perpendicular to the track in the figure indicate the separation positions of the various grooves;

[0037] Figure 10 2 is a schematic structural diagram of a hinge assembly provided by an embodiment of the present invention at a first opening angle. The figure takes the first opening angle of 25° as an example. At this time, the door body is opened 25° relative to the box body.

[0038] Figure 11 2 is a schematic structural diagram of a hinge assembly provided by an embodiment of the present invention at a second opening angle. The figure takes the second opening angle of 70° as an example. At this time, the door body is opened 70° relative to the box body.

[0039] Figure 12 2 is a schematic structural diagram of a hinge assembly provided by an embodiment of the present invention at a third opening angle. The figure takes the third opening angle of 100° as an example. At this time, the door body is opened 100° relative to the box body.

[0040] Figure 13 is a schematic diagram of the distance from the wall surface to the front side surface of the first groove body of the hinge assembly provided by an embodiment of the present invention;

[0041] Figure 14 is a schematic diagram of the distance from the wall surface to the front side surface of the second groove body of the hinge assembly provided by an embodiment of the present invention;

[0042] Figure 15 This is a structural diagram of the hinge assembly provided by an embodiment of the present invention installed on a refrigeration device. The dotted line N1 in the figure illustrates the trajectory of the first side edge, the dotted line N2 in the figure illustrates the trajectory of the second side edge, and the dotted line N3 in the figure illustrates the trajectory of the third side edge.

[0043] Reference numerals:

[0044] 100, first hinge; 110, first slot body; 111, first slot portion; 112, second slot portion; 113, sixth slot portion; 114, first slot wall; 115, first gap; 120, second slot body; 121, third slot portion; 122, fourth slot portion; 123, fifth slot portion; 124, second gap; 125, second slot wall; 131, first track; 132, second track; 141, third track; 142, fourth track; 143, fifth track;

[0045] 200, second hinge; 210, first shaft; 220, second shaft;

[0046] 310, door body; 311, first side edge; 312, front side; 313, first side wall; 314, second side wall; 320, door seal; 321, third side edge; 323, preset reference surface; 330, cabinet panel; 331, second side edge; 332, front wall;

[0047] 400. Refrigeration equipment; 410. Cabinet; 500. Environmental structure. DETAILED DESCRIPTION

[0048] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0049] refer to Figures 1 to 3As shown, the door assembly includes a door body, which is provided with a first slot body 110 and a second slot body 120. The first slot body 110 includes a first slot portion 111 and a second slot portion 112 connected along the same direction. The second slot body 120 includes a third slot portion 121 and a fourth slot portion 122 connected along the same direction. The third slot portion 121 is located at the head end of the second slot body 120. The distance between the first center line of the first slot portion 111 and the front side of the door body in the thickness direction of the door body 500 is C1. The distance between the second center line of the second slot portion 112 and the front side of the door body in the thickness direction of the door body 500 is C1. The distance between the third center line of the third groove portion 121 and the front side of the door body in the thickness direction of the door body 500 is C2; the distance between the third center line of the third groove portion 121 and the front side of the door body in the thickness direction of the door body 500 is C3; the distance between the fourth center line of the fourth groove portion 122 and the front side of the door body in the thickness direction of the door body 500 is C4; along the direction away from the first end of the second groove body 120, the difference between C3 and C1 gradually increases, and the difference between C3 and C1 varies in the range of 0.8-8mm, and the difference between C3 and C1 is specifically 2.5mm, 3mm or 4mm. The difference between C4 and C2 gradually increases, and the difference between C4 and C2 varies in the range of 8-23mm, and the difference between C4 and C2 is specifically 8mm, 12mm or 16mm.

[0050] According to the door assembly of an embodiment of the present invention, the distance between the first center line of the first groove portion 111 in the thickness direction of the door body 500 and the front side of the door body is C1; the distance between the second center line of the second groove portion 112 in the thickness direction of the door body 500 and the front side of the door body is C2; the distance between the third center line of the third groove portion 121 in the thickness direction of the door body 500 and the front side of the door body is C3; the distance between the fourth center line of the fourth groove portion 122 in the thickness direction of the door body 500 and the front side of the door body is C4; since the difference between C3 and C1 gradually increases in the direction away from the head end of the second groove body 120 along the second groove body 120, the difference between C3 and C1 gradually increases, and the difference between C4 and C2 gradually increases, so the difference in the distance from the center line of the first groove body 110 and the center line of the second groove body 120 to the front side of the door body in the thickness direction of the door body gradually increases, and the maximum value is only 8-23mm, which makes the hinge assembly narrower and can be well adapted to thin doors.

[0051] It should be noted here that the front side of the door body is also the front side of the door body 500. For the convenience of description, the front side of the door body will be referred to as the front side of the door body 500 in the following.

[0052] It should also be noted here that the reference Figure 5 and Figure 6As shown, since the front side of the door body 500 is flush with the side of the first hinge 100 close to the first hinge 100, the distance between each center line (i.e., the first center line, the second center line, the third center line, the fourth center line and the fifth center line) in the thickness direction of the door body 500 to the front side of the door body is equal to the distance between each center line and the side of the first hinge 100 close to the first hinge 100.

[0053] It should also be noted here that the thickness direction of the door body is also the thickness direction of the door body 500. For the convenience of description, the thickness direction of the door body will be referred to as the thickness direction of the door body 500 in the following.

[0054] It should also be noted here that the difference between C3 and C1 is the distance between the first axis and the second axis in the thickness direction of the door body at the same moment during the opening process of the door body. Similarly, the difference between C4 and C2 is also the distance between the first axis and the second axis in the thickness direction of the door body at the same moment during the opening process of the door body.

[0055] In some cases, the elliptical trajectory of the fourth groove portion satisfies the following relationship at any point (x, y) in the coordinate system:

[0056] x=M / sin(θ)*cos(90°-a-θ)-R*sin(a), y=M / sin(θ)*sin(90°-a-θ)

[0057] Where x is the coordinate value of the arbitrary point on the first coordinate axis X, y is the coordinate value of the arbitrary point on the second coordinate axis Y, M is the absolute coordinate value of the starting point of the second axis on the first coordinate axis X, a is the opening angle of the door body, and θ is the angle between the major axis of the ellipse and the second coordinate axis Y. In the initial position, the first coordinate axis X is parallel to the front side of the door body, and the second coordinate axis Y is perpendicular to the front side.

[0058] In one embodiment of the present invention, along the direction of the second trough body 120 away from the head end of the second trough body 120, the difference between C3 and C1 first gradually decreases and then gradually increases; based on the gradual decrease in the difference between C3 and C1, the difference between C3 and C1 varies in a range of 0-2.5 mm; based on the gradual increase in the difference between C3 and C1, the difference between C3 and C1 varies in a range of 0-8 mm.

[0059] In one embodiment of the present invention, when the door is in a closed state, the difference between C3 and C1 is 0.8-2.5 mm, specifically, the difference between C3 and C1 is 1 mm, 1.2 mm or 1.5 mm, preferably, the difference between C3 and C1 is 1.2 mm.

[0060] In one embodiment of the present invention, when the door is in an open state, the difference between C4 and C2 is 18-23 mm, specifically, the difference between C4 and C2 is 19 mm, 20 mm or 21 mm, preferably, the difference between C4 and C2 is 20 mm.

[0061] In one embodiment of the present invention, the door body includes a door body 500 and a first hinge 100 . The first hinge 100 is fixed to a hinge side of the door body 500 . The first slot 110 and the second slot 120 are located on the first hinge 100 .

[0062] In one embodiment of the present invention, the door assembly further includes a second hinge 200 , which is provided with a first shaft 210 and a second shaft 220 . The first shaft 210 is inserted into the first slot 110 , and the second shaft 220 is inserted into the second slot 120 .

[0063] In one embodiment of the present invention, the first shaft body 210 is adapted to move relative to the first groove body 110 along the first track and the second track in the first groove body 110; the second shaft body 220 is adapted to move relative to the second groove body 120 along the third track and the fourth track in the second groove body 120, the second track coincides with the second center line of the second groove portion 112, the second track extends along the second center line of the second groove portion 112, the second track is connected to the first track, and the first track is a first radius ( Figure 2 R1 in) around the first circle center ( Figure 2 The first track coincides with the first center line of the first groove portion 111, and the first track extends along the first center line of the first groove portion 111. The third track is formed by taking the second radius ( Figure 2 R2 in FIG1 extends in an arc shape around the first center point. The third trajectory coincides with the third center line of the third groove portion 121 and extends along the third center line of the third groove portion 121. The fourth trajectory is an elliptical trajectory connected to the third trajectory. The fourth trajectory coincides with the fourth center line of the fourth groove portion 122 and extends along the fourth center line of the fourth groove portion 122.

[0064] It should be noted here that, in the present invention, the movement of the first axis 210 relative to the first groove body 110 and the movement of the second axis 220 relative to the second groove body 120 can be that the first hinge 100 moves and the second hinge 200 is stationary. In this case, the first hinge 100 is fixed to the hinge side of the door body 500, and the second hinge 200 is connected to the box body 400. Of course, the first hinge 100 can also be stationary and the second hinge 200 moves. In this case, the second hinge 200 is fixed to the hinge side of the door body 500, and the first hinge 100 is connected to the box body 400. Preferably, the first hinge 100 moves and the second hinge 200 is stationary.

[0065] In one embodiment of the present invention, the second slot body 120 further includes a fifth slot portion 123, which is disposed at one end of the fourth slot portion 122 away from the third slot portion 121 and communicates with the fourth slot portion 122. The fifth slot portion 123 is formed at a third radius ( Figure 2 R3 in) around the second circle center ( Figure 2 Q2) in FIG extends along an arc.

[0066] Furthermore, the width of the fifth groove portion 123 is the same as the width of the fourth groove portion 122 , and the groove wall at the connection between the fifth groove portion 123 and the fourth groove portion 122 is an arc surface.

[0067] In one embodiment of the present invention, the second center is located on the first center line of the first slot body 110 , that is, the second center is located on the second track, and the distance between the second center and the center line of the fifth slot portion 123 is R3.

[0068] In one embodiment of the present invention, along the direction of the second trough body 120 away from the front end of the second trough body 120, the distance between the fifth center line of the fifth trough portion 123 in the thickness direction of the door body 500 and the front side of the door body 500 is C5, and the difference between C5 and the maximum value of C2 first increases and then decreases. Here, the fifth center line from the connection between the fifth center line and the fourth center line to the middle of the fifth center line is recorded as the front half of the fifth center line, and the distance between the front half of the fifth center line and the front side of the door body 500 gradually increases; the middle position of the fifth center line and the end of the fifth center line away from the fourth center line are recorded as the back half of the fifth center line, and the distance between the half of the fifth center line and the front side of the door body 500 gradually increases. The distance between the end of the second center line away from the first center line and the front side of the door body 500 is the maximum value of C2, and the difference range between C5 and the maximum value of C2 is 20-23 mm, that is, the difference range between C5 and the distance between the end of the second center line away from the first center line in the thickness direction of the door body 500 and the front side of the door body 500 is 20-23 mm. Specifically, the difference between the maximum values ​​of C5 and C2 can be 20.2 mm, 21.3 mm, 22.5 mm or other values.

[0069] During this stage, the distance between the first shaft 210 and the second shaft 220 in the thickness direction of the door body 500 increases and then decreases. In this embodiment, the width of the first hinge 100 is determined by the difference between the maximum values ​​of C5 and C2, that is, the maximum distance between the first shaft 210 and the second shaft 220 in the thickness direction of the door body 500.

[0070] In one embodiment of the present invention, reference Figures 4 to 6As shown, during the opening process of the door body 500, the second shaft body 220 is suitable for moving along the fifth trajectory in the fifth groove portion 123 around the second center of the circle with a third radius, and the first shaft body 210 rotates axially at the end of the second groove portion 112 away from the first groove portion 111, that is, the first shaft body 210 slides relative to the second shaft body 220 along the arc-shaped fifth trajectory around the second center of the circle with a third radius; at the same time, the second shaft body 220 rotates around the first shaft body 210 with the center line of the first shaft body 210 as the center, and the first shaft body 210 rotates axially at the end of the second groove portion 112 away from the first groove portion 111. This movement method effectively reduces the distance that the hinged side of the door body 500 protrudes from the box body 400 during the opening process of the door body, so that the distance that the hinged side of the door body 500 protrudes from the box body 400 is less than or equal to 3 mm. Specifically, the distance that the hinged side of the door body 500 protrudes from the box body 400 is 2 mm, 2.5 mm or 2.6 mm. This greatly reduces the gap between the cabinet 300 and the box body 400, effectively improving the aesthetics of the refrigeration equipment after it is installed in the cabinet 300.

[0071] It should be noted here that the fifth track coincides with the fifth center line of the fifth groove portion 123 , and the fifth track extends along the fifth center line of the fifth groove portion 123 .

[0072] In one embodiment of the present invention, the first groove portion 111 extends in an arc shape around the first center with a first radius, and the first radius is greater than or equal to 5 mm, and the first radius is 6 mm, 7 mm, 8 mm or other values.

[0073] In one embodiment of the present invention, the third groove portion 121 extends in an arc shape around the first center with a second radius, the second radius is greater than or equal to 20 mm, and the first radius is 21 mm, 22 mm, 23 mm or other values.

[0074] In one embodiment of the present invention, the fourth groove portion 122 extends along the first ellipse, the fourth center line also extends along the first ellipse, and the fourth trajectory also extends along the first ellipse.

[0075] In one embodiment of the present invention, the second groove 112 extends along a straight line, and the second groove 112 extends along a tangent line at the connection between the first groove 111 and the second groove 112. This allows the first shaft 210 to smoothly enter the second groove 112 from the first groove 111. Of course, the second groove 112 can also extend along a second ellipse.

[0076] In one embodiment of the present invention, the width of the first groove portion 111 is the same as the width of the second groove portion 112. This ensures that no matter whether the first shaft body 210 is in the first groove portion 111 or the second groove portion 112, the gap between the first shaft body 210 and the groove wall will not change, thereby improving the stability of the first shaft body 210 during the movement process in the first groove body 110, avoiding vibration during the movement of the door body 500, and improving the user experience.

[0077] Furthermore, the connection between the first groove portion 111 and the second groove portion 112 is smoothed, that is, the groove wall at the connection between the first groove portion 111 and the second groove portion 112 is an arc surface. Whether the first shaft body 210 enters the second groove portion 112 from the first groove portion 111 or from the second groove portion 112 to the first groove portion 111, the first shaft body 210 can enter smoothly, reducing the impact between the first shaft body 210 and the groove wall.

[0078] In one embodiment of the present invention, the width of the third groove portion 121 is the same as the width of the fourth groove portion 122. No matter whether the second shaft body 220 is in the third groove portion 121 or the fourth groove portion 122, the gap between the second shaft body 220 and the groove wall will not change, thereby improving the stability of the second shaft body 220 during the movement process in the second groove body 120, avoiding vibration during the movement of the door body 500, and improving the user experience.

[0079] Furthermore, the connection between the third groove portion 121 and the fourth groove portion 122 is smoothed, that is, the groove wall at the connection between the third groove portion 121 and the fourth groove portion 122 is an arc surface, which allows the second shaft body 220 to enter smoothly regardless of whether it enters from the third groove portion 121 to the fourth groove portion 122 or from the fourth groove portion 122 to the third groove portion 121, thereby reducing the collision between the second shaft body 220 and the groove wall.

[0080] In one embodiment of the present invention, reference Figure 1As shown, the first slot body 110 forms a first slot on a first side of the first hinge 100 that communicates with the first slot body 110. The edge of the first slot is provided with a first ridge that surrounds the edge of the first slot, and the shape formed by the first ridge is the same as the shape of the first slot. The second slot body 120 forms a second slot on a first side of the first hinge 100 that communicates with the second slot body 120. The edge of the second slot is provided with a second ridge that surrounds the edge of the second slot, and the shape formed by the second ridge is the same as the shape of the second slot. Since the edge of the first slot is provided with a first ridge and the edge of the second slot is provided with a second ridge, after the first shaft 210 is inserted into the first slot 110 and the second shaft 220 is inserted into the second slot 120, the second hinge 200 contacts the first ridge and the second ridge, thereby reducing the contact area between the first hinge 100 and the second hinge 200 and the friction between the first hinge 100 and the second hinge 200. When opening or closing the door body 500, only a very small force is required to push the door body 500 to rotate, thereby enhancing the user experience.

[0081] In one embodiment of the present invention, based on the second groove portion 112 extending along a straight line, the second center line of the second groove portion 112 passes through the center of the first ellipse;

[0082] Alternatively, since the second groove 112 extends along the second ellipse, the center of the second ellipse coincides with the center of the first ellipse.

[0083] refer to Figure 2 As shown, in the closed state, a first gap is formed between the first shaft 210 and the groove wall of the first groove portion 111 away from the second groove portion 112, and a second gap is formed between the second shaft 220 and the groove wall of the third groove portion 121 away from the fourth groove portion 122. The width of the first gap is 0.5-4mm, and the width of the second gap is 0.5-4mm. By providing a first gap between the head end of the first groove portion 110 and the first shaft 210, and a second gap between the head end of the second groove portion 120 and the second shaft 220 in the closed state, it is ensured that the door body has a certain amount of space for movement. When an external force pushes the door body toward one side of the cabinet 400, the door body and the cabinet 400 form a negative closing angle, so that the door body can squeeze the seal, thereby improving the sealing performance of the refrigeration equipment.

[0084] In one embodiment of the present invention, the first hinge 100 is a block-shaped structure and is fixed to the hinged side of the door body 500. One first hinge 100 is disposed on the upper portion of the hinged side of the door body 500, and another first hinge 100 is disposed on the lower portion of the hinged side of the door body 500. Furthermore, the hinged side of the door body 500 is provided with a mounting groove, and the first hinge 100 is embedded in the mounting groove and secured using fasteners, such as screws or bolts. Alternatively, a snap fastener may be used to secure the first hinge 100 to the mounting groove.

[0085] In one embodiment of the present invention, the first hinge 100 has a first side and a second side relative to each other, the first groove body 110 and the second groove body 120 are located on the first side of the first hinge 100, and the second side of the first hinge 100 is provided with at least one positioning hole, and the bottom of the mounting groove is provided with at least one positioning column. When the first hinge 100 is embedded in the mounting groove, the positioning column is inserted into the positioning hole to realize the positioning of the first hinge 100.

[0086] In one embodiment of the present invention, the second hinge 200 has a sheet-like structure, and the first and second shafts 210 and 220 are perpendicularly disposed on the side of the second hinge 200 facing the first hinge 100. Specifically, the second hinge 200 has two through-holes, into which the first and second shafts 210 and 220 are inserted, respectively. Of course, the second hinge 200 can also be welded to the first and second shafts 210 and 220 or integrally formed. The second hinge 200 also has a connecting portion for connecting to the housing 400. Specifically, the connecting portion has a through-hole, which is connected to the housing 400 via rivets or screws inserted into the through-hole.

[0087] In one embodiment of the present invention, the door body is suitable for switching between an open state and a closed state. In the open state, the opening angle of the door body is less than or equal to a first opening angle, and the first axis 210 is located in the first groove 111 and the second axis 220 is located in the third groove 121; the first opening angle is greater than or equal to 10° and less than or equal to 50°, specifically, the first opening angle is 24°, 25°, 26° or other angles.

[0088] Invention In one embodiment of the present invention, the thickness of the door body 500 is greater than or equal to 15 mm and less than or equal to 35 mm. Specifically, the thickness of the door body 500 is 25 mm, 30 mm, 32 mm or other sizes.

[0089] In one embodiment of the present invention, the curvature radius of the fourth groove portion 122 gradually increases in a direction away from the third groove portion 121 , and the curvature radius of the fifth groove portion 123 is smaller than the curvature radius of the third groove portion 121 .

[0090] In one embodiment of the present invention, the curvature radius of the third groove portion 121 is greater than or equal to the first preset curvature radius; the curvature radius of the fifth groove portion 123 is less than or equal to the second preset curvature radius, and the second preset curvature radius is smaller than the first preset curvature radius.

[0091] Since the connection parts of the third groove portion 121, the fourth groove portion 122 and the fifth groove portion 123 are all tangent, the curvature radius of the end end of the third groove portion 121 is equal to the curvature radius of the starting end of the fourth groove portion 122, that is, the end end of the third groove portion 121 is the starting end of the fourth groove portion 122, and then the curvature radius of the fourth groove portion 122 close to the end of the third groove portion 121 is smaller than the first preset curvature radius, so that the third groove portion 121 gradually transitions to the fourth groove portion 122 in a circular arc, ensuring that the door opening process is more stable and avoiding jamming.

[0092] Likewise, the curvature radius of the ending end of the fourth groove portion 122 is the same as the curvature radius of the starting end of the fifth groove portion 123 .

[0093] In some embodiments of the present invention, the first preset curvature radius is R1, wherein 30mm≤R1≤34mm, that is, the value of R1 can be any integer between 30mm and 34mm, that is, 30mm, 31mm, 32mm, 33mm or 34mm, and the value of R1 can also be any rational number between 30mm and 34mm, that is, 30.1mm, 32.65mm or 33.52mm, etc. Preferably, the first preset curvature radius R1 is 32mm.

[0094] The third preset curvature radius is R3, where 10mm≤R2≤14mm, that is, the value of R3 can be any integer between 12mm and 14mm, that is, 10mm, 11mm, 12mm, 13mm or 14mm. The value of R3 can also be any rational number between 10mm and 14mm, that is, 10.1mm, 12.65mm or 13.52mm, etc. Preferably, the first preset curvature radius R3 is 12mm.

[0095] refer to Figures 4 to 7As shown, the hinge assembly of the embodiment of the present invention can be applied to a door body 310 that is openable and closed and connected to a box body 410, and the user can directly observe the front side 312 of the door body 310; it can also be applied to a door body 310 that is embedded in an installation, and the front side 312 of the door body 310 is connected to a cabinet panel 330, and the user can directly observe the front wall 332 of the cabinet panel 330, and the front side 312 of the door body 310 is covered by the front wall 332 of the cabinet panel 330. When the door body 310 is not equipped with a cabinet panel 330, it is necessary to ensure that the side edges of the door body 310 will not interfere with the adjacent environmental structure 500; when the door body 310 is equipped with a cabinet panel 330, it is necessary to ensure that both the side edges of the door body 310 and the side edges of the cabinet panel 330 will not interfere with the adjacent environmental structure 500; regardless of whether the door body 310 is equipped with a cabinet panel 330, when a door seal 320 is provided on the rear side of the door body 310, it is necessary to ensure that the door seal 320 can be stably separated from the box body 410 to avoid the door seal 320 being stuck due to the squeezing force of the door body 310 and the box body 410.

[0096] The environmental structure 500 can be understood as a wall, cabinet, appliance, etc. The side edge of the door body 310 (hereinafter referred to as the first side edge 311) can be understood as being located at the junction of the front side 312 of the door body 310 and the first side wall 313 (the left or right wall of the door body 310). The front side 312 and the first side wall 313 are located on adjacent sides of the door body 310. The first side wall 313 is located on the hinged side of the door body 310. The hinge assembly is installed on the hinged side of the door body 310. The opening and closing side of the door body 310 is arranged opposite the hinged side in the left-right direction. On the opening and closing side, the front side 312 of the door body 310 is connected to the second side wall 314, and the second side wall 314 is arranged opposite the first side wall 313 in the left-right direction. The user generally grasps the door body 310 on the opening and closing side to open and close the door body 310. Regarding the first side edge 311: when the front side surface 312 of the door body 310 intersects with the first side wall 313, the intersection is the first side edge 311; when a chamfered area is provided between the front side surface 312 of the door body 310 and the first side wall 313, any straight line extending along the height direction of the chamfered area can be understood as the first side edge 311, and the first side edge 311 is not limited to a fixed edge line. The first side edge 311 can switch among multiple vertical lines between the front side surface 312 of the door body 310 and the first side wall 313.

[0097] Similarly, regarding the side edge of the cabinet panel 330 (hereinafter referred to as the second side edge 331), the second side edge 331 is located at the connection between the front wall 332 of the cabinet panel 330 and the first wall (left wall or right wall), the first wall and the front wall 332 are located on adjacent sides of the cabinet panel 330, the first wall is located on the hinged side of the cabinet panel 330, the hinge assembly is installed on the hinged side of the cabinet panel 330, the opening and closing side and the hinged side of the cabinet panel 330 are arranged opposite to each other in the left and right directions, on the opening and closing side, the front wall 332 of the cabinet panel 330 is connected to the second wall, the second wall and the front wall 332 are located on adjacent sides of the cabinet panel 330, and the second wall and the first wall are arranged opposite to each other in the left and right directions. Regarding the second side edge 331: when the front wall 332 of the cabinet panel 330 intersects with the first wall, the intersection is the second side edge 331; when a chamfered area is provided between the front wall 332 of the cabinet panel 330 and the first wall, any straight line extending along the height direction of the chamfered area can be understood as the second side edge 331. The second side edge 331 is not limited to a fixed edge line. The second side edge 331 can switch among multiple vertical lines between the front wall 332 of the cabinet panel 330 and the first wall.

[0098] Regarding the rear side edge of the door seal 320 of the door body 310 (hereinafter referred to as the third side edge 321): The connection between the rear wall surface of the door seal 320 and the third side wall of the door seal 320 forms the third side edge 321. The third side wall is located on the hinged side of the door body 310. The position of the third side edge 321 of the door seal 320 is used as a reference to determine whether the door seal 320 can be smoothly opened and closed. As above, the third side edge 321 can be the intersection of the rear wall surface and the third side wall, or the third side edge 321 can be a longitudinal edge line within the chamfered area between the rear wall surface and the third side wall (the third side edge 321 can switch between multiple longitudinal edges).

[0099] The first axis 210 in the second groove 112 and the second axis 220 in the fourth groove 122 cooperate to ensure that the first side edge 311 of the door body 310 moves outward a small distance, thereby avoiding reflection between the door body 310 and the adjacent environmental structure 500. When the door body 310 is installed with a cabinet panel 330, it can also ensure that the second side edge 331 of the cabinet panel 330 moves outward a small distance, thereby avoiding interference between the second side edge 331 of the cabinet panel 330 and the adjacent environmental structure 500.

[0100] The outward movement of the first side edge 311 of the door body 310 can be understood as moving along the left and right directions of the door body 310 in the direction away from the door body 310, such as the left door body 310 moving to the left and the right door body 310 moving to the right (the hinged side of the left door body 310 is the left side, and the hinged side of the right door body 310 is the right side). The above movements are all based on the starting position of the first side edge 311 in the closed state, and the distance from the current position of the first side edge 311 to the starting position is the distance moved by the first side edge 311.

[0101] The outward movement of the second side edge 331 of the cabinet panel 330 can be understood as moving along the left and right directions of the cabinet panel 330 in the direction away from the cabinet panel 330, such as moving toward the left side of the left door body 310 or moving toward the right side of the right door body 310. The above-mentioned movements are all based on the starting position of the second side edge 331 in the closed state, and the distance from the current position of the second side edge 331 to the starting position is the distance moved by the second side edge 331.

[0102] It can be understood that the first hinge 100 and the second hinge 200 switch between an initial position and an open position, the initial position corresponds to the door body 310 being in a closed state, and the open position corresponds to the door body 310 being open relative to the box body 410, and all opening angles can be understood as open positions. An example of measuring the opening angle: Taking the front side surface 312 of the door body 310 in the initial position as the reference plane, the angle between the front side surface 312 of the door body 310 in the current position and the reference plane can be understood as the opening angle. Regarding the open position, the open position is one or more positions where the door body 310 is open relative to the box body 410. The angle at which the first hinge 100 and the second hinge 200 are opened is not limited, and the open position includes multiple opening angles.

[0103] refer to Figure 9 As shown, in the initial position, the first shaft body 210 is located at the end of the first groove portion 111 away from the second groove portion 112, and the second shaft body 220 is located at the end of the third groove portion 121 away from the fourth groove portion 122. It can also be understood that the first shaft body 210 is located at the starting end of the first groove body 110, and the second shaft body 220 is located at the starting end of the second groove body 120; between the initial position and the open position, the first shaft body 210 moves in the first groove body 110, and the second shaft body 220 moves in the second groove body 120.

[0104] refer to Figure 10 and Figure 11As shown, in the open position, the first shaft 210 is located in the first slot 111 and the second shaft 220 is located in the third slot 121, or the first shaft 210 is located in the second slot 112 and the second shaft 220 is located in the fourth slot 122. When the first shaft 210 is located in the first slot 111 and the second shaft 220 is located in the third slot 121, the first hinge 100 and the second hinge 200 are between the initial position and the first opening angle. When the first shaft 210 is located in the second slot 112 and the second shaft 220 is located in the fourth slot 122, the first hinge 100 and the second hinge 200 move between the first opening angle and the second opening angle. The positions of the first shaft 210 and the second shaft 220 correspond to each other. The first opening angle is greater than 0° and less than the second opening angle. In some cases, the range of the opening angle can be greater than 0° and less than or equal to 130°. Correspondingly, the second opening angle is less than or equal to 130°. The hinge assembly is applied between the door body 310 and the box body 410, and the opening angle of the door body 310 can reach 130°.

[0105] In the hinge assembly of the embodiment of the present invention, the first shaft 210 moves in the first groove body 110, and the second shaft 220 moves in the second groove body 120 to realize the opening and closing of the door body 310; the trajectory of the first groove body 110 and the trajectory of the second groove body 120 cooperate to reduce the maximum distance between the first groove body 110 and the second groove body 120. When one of the first hinge 100 and the second hinge 200 is installed on the door body 310, the length of the first hinge 100 in the front-to-back direction can be reduced, which is suitable for the door body 310 with a smaller thickness. It can also reduce the distance that the first side edge 311 of the door body 310 moves outward, thereby avoiding interference between the first side edge 311 of the door body 310 and the adjacent environmental structure 500.

[0106] It should be noted that, taking into account processing errors, assembly errors, design requirements, etc., the above-mentioned first groove portion 111 and the third groove portion 121 extend along concentric arc trajectories. The concentric arcs here are not required to be strictly concentric arcs, and can be approximately concentric arcs. The arcs can also be approximately arcs, such as the first center of the first groove portion 111 and the first center of the third groove portion 121 are within a set spacing, such as the set spacing is less than or equal to 10 mm.

[0107] It should also be noted that the hinge assembly of the embodiment of the present invention has the same principle of opening and closing the door as the first hinge 100 or the second hinge 200 installed on the door body 310. Combined with the drawings and the following embodiments, the first hinge 100 is installed on the door body 310 and the second hinge 200 is installed on the box body 410 as an example for explanation.

[0108] refer to Figure 9As shown, from the initial position to the open position, that is, between the initial position and the first opening angle, the first shaft body 210 moves along the first trajectory 131, and the second shaft body 220 moves along the third trajectory 141. The first trajectory 131 is an arc trajectory with the first center Q1 as the center and the first radius R1 as the radius, and the third trajectory 141 is an arc trajectory with the first center Q1 as the center and the second radius R2 as the radius. It can be seen that the first shaft body 210 and the second shaft body 220 rotate concentrically, that is, the first shaft body 210 moves along the guide direction of the first groove portion 111, and the second shaft body 220 moves along the guide direction of the third groove portion 121. At this time, the first shaft body 210 is located in the first groove portion 111 and the second shaft body 220 is located in the third groove portion 121.

[0109] It should be noted that the first groove body 110 guides the first shaft body 210, and the second groove body 120 guides the second shaft body 220, but the extension path of the first groove body 110 is not limited to extending along the first track 131. The two side walls of the first groove body 110 cooperate to ensure that the first shaft body 210 moves along the first track 131. Similarly, the extension path of the second groove body 120 is not limited to extending along the third track 141. The two side walls of the second groove body 120 cooperate to ensure that the second shaft body 220 moves along the third track 141.

[0110] refer to Figure 10 and Figure 11 As shown, in the open position, between the first opening angle and the second opening angle, the first shaft body 210 moves along the second trajectory 132, and the second shaft body 220 moves along the fourth trajectory 142. The fourth trajectory 142 is a first elliptical trajectory. The extension line of one of the second trajectory 132 and the fourth trajectory 142 may intersect with the other. The specific path of the second trajectory 132 is not limited. That is, the first shaft body 210 can move along the guide direction of the second groove portion 112, and the second shaft body 220 can move along the guide direction of the fourth groove portion 122. In addition, the difference in distance between the second groove portion 112 and the fourth groove portion 122 and the front side surface 312 of the door body 310 increases in the direction away from the first groove portion 111. It should be noted that during the door opening process, the first shaft body 210 and the second shaft body 220 first rotate concentrically. After completing the concentric rotation, the second shaft body 220 moves along the first elliptical trajectory and the first shaft body 210 moves within the second groove portion 112.

[0111] It should be noted that the extension line of one of the second track 132 and the fourth track 142 intersects with the other. It can be understood that the second track 132 and the fourth track 142 cooperate to form a cross-shaped slide, and the extension line of one of the second groove portion 112 and the fourth groove portion 122 intersects with the other, ensuring that the door body 310 can be opened and closed smoothly.

[0112] During the concentric rotation of the first shaft 210 and the second shaft 220 about the first center of the circle, the outward movement distance of the first side edge 311 of the door body 310 is relatively small, thereby avoiding the problem of the door body 310 colliding with the adjacent environmental structure 500. The outward movement distance of the second side edge 331 of the cabinet panel 330 is also relatively small, thereby also avoiding the problem of the cabinet panel 330 colliding with the adjacent environmental structure 500. The first shaft 210 and the second shaft 220 complete the concentric movement, and then the second shaft 220 moves along the first elliptical path. The movement mode of the first shaft 210 is not limited. By controlling the second shaft 220 to move along the first elliptical path, the outward movement distance of the first side edge 311 of the door body 310 can be further reduced, for example, ensuring that the first side edge 311 of the door body 310 moves inward to ensure smooth opening and closing of the door. In addition, the first shaft 210 and the second shaft 220 rotate concentrically around the first center of the circle to ensure that the door seal 320 of the door body 310 moves forward as much as possible, and the door seal 320 bears as little or as little of the extrusion force between the door seal 320 and the box body 410 as possible, thereby avoiding the door seal 320 and the box body 410 from getting stuck and ensuring that the door body 310 can be opened smoothly.

[0113] It should be noted that when the first hinge 100 is disposed on the door body 310, the starting end of the first trough 110 and the starting end of the second trough 120 are both close to the front side surface 312 of the door body 310, and the terminal end of the second trough 120 is away from the front side surface 312 of the door body 310. The position of the terminal end of the first trough 110 is not limited. In some cases, the terminal end of the first trough 110 is as close as possible to the front side surface 312 of the door body 310. When the distance difference between the first trough 110 and the second trough 120 increases, the distance from the second trough 120 to the front side surface 312 of the door body 310 is minimized to reduce the length of the first hinge 100 in the thickness direction of the door body 310, that is, to reduce the thickness of the door body 310.

[0114] It is understood that, in the left-right direction of the door body 310, from the starting end to the ending end of the first trough body 110, the first trough body 110 extends toward the first side wall 313, and from the starting end to the ending end of the second trough body 120, the second trough body 120 extends toward the first side wall 313. In combination with the above, in the thickness direction of the door body 310, from the starting end to the ending end of the second trough body 120, the second trough body 120 extends from the front side to the rear side of the door body 310, and the extension path of the first trough body 110 in the thickness direction of the door body 310 is not limited.

[0115] It can be understood that, in combination with the above-mentioned first track 131, second track 132, third track 141, and fourth track 142, the distance from the first set position in the first trough body 110 and the second trough body 120 to the front side 312 of the door body 310 is the smallest, and the distance from the second set position in the first trough body 110 and the second trough body 120 to the front side 312 of the door body 310 is the largest, and the difference in distance from the first set position to the front side 312 of the door body 310 between the first set position and the second set position is greater than or equal to 13 mm and less than or equal to 33 mm. The first set position can be a point in the first trough body 110 or the second trough body 120, and the second set position can also be a point in the first trough body 110 or the second trough body 120.

[0116] It is understood that, in the front-to-back direction of the hinge assembly, the distance from the frontmost end to the rearmost end of the second slot 120 is greater than or equal to 15 mm and less than or equal to 33 mm. In other words, both the first setting position and the second setting position are set at the second slot 120. The first setting position is set at the starting end of the second slot 120, and the second setting position is set at the ending end of the second slot 120.

[0117] The length of the first hinge 100 in the front-to-back direction of the door body 310 is greater than or equal to 15 mm and less than or equal to 35 mm, and the length of the door body 310 in the front-to-back direction (that is, the thickness of the door body 310) is greater than or equal to 15 mm and less than or equal to 35 mm, wherein the first hinge 100 is a component independent of the door body 310 or the first hinge 100 is integrally formed with the door body 310. The minimum distance from the first setting position to the front side 312 of the door body 310 is 1 mm to ensure the wall thickness of the groove body, and the minimum distance from the second setting position to the rear side of the door body 310 is 1 mm to ensure the wall thickness of the groove body. Using the hinge assembly of the embodiment of the present invention, the thickness of the door body 310 can be controlled to be greater than or equal to 15 mm and less than or equal to 35 mm, so as to provide an ultra-thin door body 310.

[0118] It is understood that the central angles of the first slot 111 and the third slot 121 are the same. That is, the first shaft 210 moves from the starting end of the first slot 111 to the ending end of the first slot 111, while the second shaft 220 moves from the starting end of the third slot 121 to the ending end of the fourth slot 122. The ending end of the first slot 111 is connected to the starting end of the second slot 112, and the ending end of the third slot 121 is connected to the starting end of the fourth slot 122. In other words, when the door is at the first opening angle, the first shaft 210 is located at the ending end of the first slot 111, and the second shaft 220 is located at the ending end of the third slot 121.

[0119] It is understandable that the second radius R2 is greater than the first radius R1 , and the third groove portion 121 is flatter than the first groove portion 111 , so that the second shaft body 220 can be driven to rotate concentrically through the first shaft body 210 .

[0120] The position of the first circle center Q1 is based on a predetermined reference plane 323. The predetermined reference plane 323 is the outer side surface of the door seal 320 on the pivoting side of the door body 310. The outer side is understood as the surface facing the external environment, and the inner side is the surface facing the opening of the box. The predetermined reference plane 323 can be understood as the third sidewall of the door seal 320.

[0121] It is understood that the first center Q1 is located on the preset reference plane 323, the first side of the preset reference plane 323, or the second side of the preset reference plane 323, where the first side is the inner side of the preset reference plane 323 and the second side is the outer side of the preset reference plane 323. When the first center Q1 is located on the preset reference plane 323 or the second side of the preset reference plane 323, the position of the first center Q1 is not limited and can be selected as needed.

[0122] It is understood that, since the first circle center is located on the second side of the preset reference plane 323, the distance from the first circle center Q1 to the preset reference plane 323 is less than the second threshold. The second threshold is set to be greater than or equal to 50 mm and less than or equal to 200 mm. Of course, the second threshold does not need to have an upper limit.

[0123] It is understandable that, based on the first center Q1 being located on the first side of the preset reference plane 323 , the distance from the first center Q1 to the preset reference plane 323 is less than a first threshold value, which is set to be less than or equal to 20 mm, such as less than or equal to 10 mm.

[0124] It should be noted that the position of the first center Q1 needs to ensure that the distance from the terminal end of the first groove portion 111 to the front side surface 312 of the door body 310 is greater than the distance from the starting end of the third groove portion 121 to the front side surface 312 of the door body 310, and the distance from the terminal end of the third groove portion 121 to the front side surface 312 of the door body 310 is greater than the distance from the starting end of the third groove portion 121 to the front side surface 312 of the door body 310. In some cases, the distance from the first center Q1 to the preset reference plane 323 is less than the minimum distance from the first groove portion 111 to the preset reference plane 323, and the distance from the first center Q1 to the preset reference plane 323 is less than the minimum distance from the third groove portion 121 to the preset reference plane 323.

[0125] It can be understood that the first center of the circle is located on the front side of the door body 310, ensuring that from the starting end to the ending end, the first groove portion 111 and the third groove portion 121 both extend in the direction away from the front side surface 312 of the door body 310, and the first groove body 110 and the second groove body 120 both bend toward the front side of the door body 310.

[0126] It is understood that the angle at which the first hinge 100 and the second hinge 200 are opened is less than or equal to the first opening angle, and the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is less than or equal to 10 mm. This reduces the distance between the first slot 110 and the second slot 120, and the length of the first hinge 100 in the front-to-back direction, making it suitable for a door body 310 with a smaller thickness. In the open position, with the opening angle less than or equal to the first opening angle, the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is greater than or equal to 4 mm and less than or equal to 8 mm, such as 5 mm.

[0127] It is understood that, in the initial position, the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is less than 2.5 mm. This reduces the distance between the first slot 110 and the second slot 120, and the length of the first hinge 100 in the front-to-back direction, making it suitable for a door body 310 with a smaller thickness. In some cases, in the initial position, the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is greater than or equal to 1 mm and less than or equal to 2 mm, such as 1.5 mm.

[0128] refer to Figure 10 and Figure 11 As shown, it can be understood that the second groove portion 112 extends along a straight line, or the second groove portion 112 extends along a second ellipse; that is, the second trajectory 132 is a straight line or a trajectory extending along the second ellipse. When the second groove portion 112 extends along a straight line, the structure is simple; when the second groove portion 112 extends along the second ellipse, the first shaft 210 and the second shaft 220 can move smoothly.

[0129] When the second groove portion 112 extends along a straight line, regarding the above-mentioned "the center of the trajectory of the second groove portion 112 intersects with the center of the trajectory of the fourth groove portion 122", it can be understood that the first center line of the second groove portion 112 intersects with the center of the first ellipse of the fourth groove portion 122, the first center line of the second trajectory 132 passes through the center of the first ellipse, and the first center line of the movement of the first shaft body 210 intersects with the center of the fourth trajectory 142 of the movement of the second shaft body 220, so as to utilize the principle of the M-shaped slide; when the second groove portion 112 extends along the second ellipse, the center of the second ellipse of the second groove portion 112 intersects with the center of the first ellipse of the fourth groove portion 122, forming a M-shaped slide, so that the door body can be opened smoothly.

[0130] It is understood that the first shaft 210 travels a first length within the second groove 112, and the second shaft 220 travels a second length within the fourth groove 122, where the second length is greater than the first length. In other words, the length of the fourth track 142 is greater than the length of the second track 132, ensuring smooth door opening and closing.

[0131] It can be understood that the first shaft 210 is located in the second groove 112 and the second shaft 220 is located in the fourth groove 122, that is, the opening angle of the first hinge 100 and the second hinge 200 is greater than the first opening angle and less than or equal to the second opening angle, and the distance between the center line of the first shaft 210 and the center line of the second shaft 220 in the front-to-back direction is less than or equal to 10 mm, so as to reduce the distance between the front end and the rear end of the first groove 110 and the second groove 120, and reduce the length of the first hinge 100 in the front-to-back direction, which is suitable for door bodies 310 with smaller thickness.

[0132] Understandably, the reference Figure 11 and Figure 12 As shown, the second shaft 220 can move along an arc path in the fifth slot 123 so that the first hinge 100 and the second hinge 200 can be opened to a third opening angle, which is greater than the second opening angle.

[0133] When the second slot 120 is provided with the fifth slot 123, the second shaft 220 is adapted to move within the second slot 120 along a fifth trajectory 143. The fifth trajectory 143 is an arc path centered at the second center Q2 and having a third radius R3. The fifth trajectory 143 is disposed at and connected to the fourth trajectory 142 at its terminal end. The second shaft 220 sequentially moves along the third trajectory 141, the fourth trajectory 142, and the fifth trajectory 143. When the second shaft 220 reaches the terminal end of the fifth trajectory 143, the first hinge 100 and the second hinge 200 reach a third opening angle.

[0134] It is understandable that, based on the movement of the second shaft 220 along the fifth trajectory 143 , the first shaft 210 rotates around a fixed axis in the first slot 110 . The movement of the first shaft 210 is simple and the structure of the first slot 110 is simple.

[0135] It can be understood that the second center Q2 is located on the center line of the first groove body 110, that is, the second center Q2 is on the center line of the first shaft body 210, and the second shaft body 220 rotates around the first shaft body 210. At this time, the position of the first shaft body 210 in the first groove body 110 is not limited, such as the first shaft body 210 is located at the terminal end of the first groove body 110, the first shaft body 210 is located at the terminal end of the second groove portion 112, or before the terminal end of the second groove portion 112.

[0136] In some cases, the first shaft 210 rotates around the end of the second track 132, or the first shaft 210 retracts along the second track 132 to a preset position of the first slot 110 and rotates around the preset position. The preset position can be a position in the first slot 111 or the second slot 112.

[0137] During the movement of the first hinge 100 and the second hinge 200 from the second opening angle to the third opening angle, the first shaft 210 rotates in the second groove 112 and the second shaft 220 moves along the fifth groove 123 in the direction away from the fourth groove 122, and the second shaft 220 takes the center of the first shaft 210 as the center of the circle.

[0138] When the first shaft body 210 is located at the terminal end of the first groove body 110, the terminal end of the first groove body 110 can be the terminal end of the second groove portion 112, or the terminal end of the second groove portion 112 is connected to the extended groove portion, and the terminal end of the first groove portion 111 is located at the terminal end of the extended groove portion, and the path of the extended groove portion is not limited.

[0139] It can be understood that when the first slot body 110 includes the first slot portion 111 and the second slot portion 112 and the second slot body 120 is provided with the fifth slot portion 123, in the open position, the second axis body 220 can be located in the fifth slot portion 123 and the first axis body 210 is located in the second slot portion 112, which can simplify the structure of the first slot portion 111 and increase the opening angle of the door body 310.

[0140] It is understood that the angle at which the first hinge 100 and the second hinge 200 are opened is greater than the second opening angle and less than or equal to the third opening angle, and the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is less than or equal to 20 mm. This reduces the length of the first hinge 100 in the front-to-back direction and is therefore suitable for use with a door body 310 having a smaller thickness. In the open position, with the opening angle greater than the second opening angle and less than or equal to the third opening angle, the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is greater than or equal to 12 mm and less than or equal to 17 mm, such as 13 mm.

[0141] It can be understood that the connection between the first groove portion 111 and the second groove portion 112 is tangent. The first groove portion 111 and the second groove portion 112 can be directly connected or connected through a first transition section. The first transition section makes the first groove portion 111 and the second groove portion 112 transition tangentially, ensuring a smooth transition between the first groove portion 111 and the second groove portion 112. The first shaft body 210 moves smoothly between the first groove portion 111 and the second groove portion 112, avoiding jamming during the movement of the first shaft body 210.

[0142] It is understood that the connection between the third groove portion 121 and the fourth groove portion 122 is tangent. The third groove portion 121 and the fourth groove portion 122 can be directly connected or connected through a second transition section. The second transition section allows the third groove portion 121 and the fourth groove portion 122 to transition tangentially, ensuring a smooth transition between the third groove portion 121 and the fourth groove portion 122, allowing the second shaft 220 to move smoothly between the third groove portion 121 and the fourth groove portion 122, and avoiding jamming during the movement of the second shaft 220.

[0143] It is also understandable that the fourth slot portion 122 is tangent to the fifth slot portion 123 at its connection. The fourth slot portion 122 and the fifth slot portion 123 may be directly connected or connected via a third transition section. The third transition section allows the fourth slot portion 122 and the fifth slot portion 123 to transition tangentially, ensuring a smooth transition between the fourth slot portion 122 and the fifth slot portion 123. This allows the second shaft 220 to move smoothly between the fourth slot portion 122 and the fifth slot portion 123, thereby preventing any jamming during the movement of the second shaft 220.

[0144] It is understood that the diameter of the first shaft 210 is greater than the diameter of the second shaft 220. Accordingly, the width of the first trough 110 is greater than the width of the second trough 120, with the width being the length perpendicular to the centerline. With the first shaft 210 serving as the primary axis and the second shaft 220 serving as the secondary axis, the first shaft 210 performs the majority of the load-bearing function. By increasing the diameter of the first shaft 210, the structural strength of the first shaft 210 can be enhanced.

[0145] It is understood that the length of the first shaft 210 is greater than the length of the second shaft 220, and correspondingly, the depth of the first slot 110 is greater than the depth of the second slot 120. During installation, the first shaft 210 is first inserted into the bottom of the first slot 110, and the second shaft 220 is then inserted into the bottom of the second slot 120. The first shaft 210 is first positioned with the first slot 110, and then the second shaft 220 is positioned with the second slot 120. The design of different axial lengths simplifies the positioning and installation of the first hinge 100 and the second hinge.

[0146] It is understood that in the open position, the angle between the first hinge 100 and the second hinge 200 is less than or equal to the first opening angle, which is greater than or equal to 10° and less than or equal to 50°. At this time, the first shaft 210 is located in the first groove 111 and the second shaft 220 is located in the third groove 121. The first opening angle can be set to 20° to 30°, such as 25°. Figure 9 and Figure 10 A transition from an initial position to a first opening angle is illustrated.

[0147] It can be understood that when the door body 310 moves from the closed position to the first opening angle of the open position, the first shaft 210 moves along the first track 131 to the starting end of the second track 132 and the second shaft 220 moves along the third track 141 to the starting end of the fourth track 142.

[0148] It is understood that the opening angle of the first hinge 100 and the second hinge 200 is greater than the first opening angle and less than or equal to the second opening angle, and the second opening angle is greater than or equal to 60 degrees and less than or equal to 95 degrees. At this time, the first shaft 210 is located in the second groove 112 and the second shaft 220 is located in the fourth groove 122. The second opening angle can be 65 degrees to 75 degrees, such as 70 degrees. Figure 10 and Figure 11 A transition from a first opening angle to a second opening angle is illustrated.

[0149] It can be understood that when the door body 310 moves from the first opening angle to the second opening angle in the open position, the first shaft body 210 moves along the second track 132 toward the terminal end away from the first track 131 and the second shaft body 220 moves along the fourth track 142 toward the terminal end away from the third track 141.

[0150] It can be understood that, based on the second slot 120 including the fifth slot portion 123, the opening angle between the first hinge 100 and the second hinge 200 is greater than the second opening angle and less than or equal to the third opening angle, and the third opening angle is greater than or equal to 100° and less than or equal to 130°. At this time, the second shaft 220 is located in the fifth slot portion 123 and the first shaft 210 is located in the second slot portion 112. The third opening angle can be 100° to 110°, such as 105°. Figure 11 and Figure 12 A transition from the second opening angle to the third opening angle is illustrated.

[0151] It is understandable that when the door body 310 moves from the second opening angle to the third opening angle, the first shaft 210 rotates in the second groove 112 and the second shaft 220 moves along the fifth track 143 toward the terminal end away from the fourth track 142 .

[0152] It will be appreciated that the second shaft 220 moves along the fifth trajectory 143, which is an arc around the centerline of the first shaft 210 with a third radius R3, where the third radius R3 is equal to the distance between the centerline of the first shaft 210 and the centerline of the second shaft 220. The fifth trajectory 143 cooperates with the first shaft 210 to reduce the distance between the fifth trajectory 143 and the front side 312 of the door body 310, thereby reducing the length of the first hinge 100 in the front-to-back direction and, consequently, the thickness of the door body 310.

[0153] When the first shaft 210 rotates around the terminal end of the second track 132 , the third radius is equal to the distance between the terminal end of the second track 132 and the terminal end of the fourth track 142 .

[0154] It is understood that the third radius is greater than or equal to 10 mm and less than or equal to 30 mm. By controlling the third radius, the fifth track 143 extends a shorter distance backward, which helps to reduce the thickness of the door body 310.

[0155] In the closed position, the center line of the first axis 210 is located behind the center line of the second axis 220. Between the closed position and the set angle, the distance between the center line of the first axis 210 and the center line of the second axis 220 in the thickness direction of the door body 310 gradually decreases. Between the set angle and the first opening angle, the distance between the center line of the first axis 210 and the center line of the second axis 220 in the thickness direction of the door body 310 gradually increases, wherein the set angle is greater than 0° and less than the first opening angle.

[0156] The setting angle is less than or equal to 10°, for example, the setting angle is greater than or equal to 5° and less than or equal to 7°.

[0157] In the door closing position, a first distance is set between the center line of the first shaft body 210 and the center line of the second shaft body 220, and the first distance is less than or equal to 2.5 mm. For example, the first distance is greater than or equal to 1 mm and less than or equal to 2 mm.

[0158] Regarding the distances between the first shaft 210 and the second shaft 220 and the front side 312 of the door body 310:

[0159] As the door body 310 moves from the closed position to the first open angle, the first shaft body 210 moves along the first track 131, and the second shaft body 220 moves along the third track 141. Both the first track 131 and the third track 141 are circular tracks. The starting ends of the first track 131 and the starting ends of the third track 141 are close to the front side 312 of the door body 310. Both the first track 131 and the third track 141 extend toward the first side wall 313 (the side wall on the hinged side) of the door body 310.

[0160] Among them, the first track 131 and the third track 141 can be concentric arc tracks. For details, please refer to the relevant content in the embodiments of the present invention; however, the first track 131 and the third track 141 are not limited to concentric arc tracks. The center positions of the first track 131 and the third track 141 need to ensure smooth door opening. For example, the distance between the center of the first track 131 and the center of the second track 132 is less than a preset value, so that the first track 131 and the second track 132 are close to concentric arc tracks.

[0161] The following content, reference Figure 13 and Figure 14 As shown, the static trajectories of the first slot body 110 and the second slot body 120 are described.

[0162] The hinged side of the door body 310 is provided with a first slot body 110 and a second slot body 120, and the first slot body 110 is located in front of the second slot body 120; the door body 310 is provided with a vertical front side surface 312 and a first side wall 313, and the first side wall 313 is provided on the hinged side of the door body 310;

[0163] The first shaft 210 is inserted into the first groove body 110, and the second shaft 220 is inserted into the second groove body 120; the starting end of the first groove body 110 and the starting end of the second groove body 120 are both far away from the first side wall 313, and the terminal end of the first groove body 110 and the terminal end of the second groove body 120 are both close to the first side wall 313; the door body 310 is in the closed position, the first shaft 210 is located at the starting end of the first groove body 110 and the second shaft 220 is located at the starting end of the second groove body 120. During the door opening process, the first shaft 210 moves toward the terminal end of the first groove body 110, and the second shaft 220 moves toward the terminal end of the second groove body 120 until the maximum door opening angle is reached.

[0164] refer to Figure 14 As shown, regarding the first tank 110:

[0165] From the starting end to the ending end of the first trough body 110 , the distance from the first trough body 110 to the front side surface 312 first increases to a first inflection point. After the first inflection point, the distance from the first trough body 110 to the front side surface 312 can decrease or remain unchanged, which can be selected according to needs.

[0166] A first distance L1 is defined between the starting end of the first trough 110 and the front side 312 of the door body 310. The first distance L1 is greater than or equal to 1 mm and less than or equal to 4.8 mm. A second distance C2 is defined between the first inflection point of the first trough 110 and the front side 312. The second distance C2 is greater than or equal to 5 mm and less than or equal to 10 mm. A fifth distance L5 is defined between the terminating end of the first trough 110 and the front side 312. The fifth distance L5 is greater than or equal to 3 mm and less than or equal to 10 mm. When the fifth distance L5 is less than the second distance C2, the first trough 110 extends toward the front side 312, which helps reduce the distance between the first trough 110 and the front side 312, thereby reducing the thickness of the door body 310.

[0167] The distance between the first slot 110 and the front side 312 of the door body 310 is the minimum distance.

[0168] The first inflection point can be understood as the point where the extension trend of the first trough body 110 changes. When the first trough body 110 first extends along a circular arc trajectory and then extends along a straight line, the intersection of the arc and the straight line is the first inflection point; when the first trough body 110 extends along an arc trajectory and then extends along an elliptical trajectory, the intersection of the arc and the ellipse is the first inflection point.

[0169] It should be noted that the distance from the first slot body 110 to the front side surface 312 can be understood as the minimum distance.

[0170] It can be understood that a first midpoint is set between the starting end of the first groove body 110 and the first inflection point, the first axis body 210 is located at the first midpoint of the first groove body 110, and the eighth distance L8 from the first midpoint to the front side surface 312 is greater than or equal to 4.9 mm and less than or equal to 9 mm.

[0171] In some cases, the first distance is greater than or equal to 3 mm and less than or equal to 4 mm, the eighth distance is greater than or equal to 5 mm and less than or equal to 6 mm, the second distance is greater than or equal to 5 mm and less than or equal to 7 mm, and the fifth distance is greater than or equal to 4 mm and less than or equal to 5 mm.

[0172] Among them, the first opening angle can refer to the above content.

[0173] A midpoint is provided between the first inflection point and the terminal end of the first slot body 110 , and a distance L12 from the midpoint to the front side surface 312 is greater than or equal to 3 mm and less than or equal to 5 mm.

[0174] It can be understood that the first groove body 110 includes a first track 131 and a second track 132, the first track 131 is a circular arc track, the second track 132 is a straight track, and a sixth track is arranged between the first track 131 and the second track 132, that is, a sixth groove portion 113 is arranged between the first groove portion 111 and the second groove portion 112, and the sixth groove portion 113 extends along the sixth track. The first track 131 and the second track 132 transition through the sixth track arc, ensuring that the first shaft body 210 can move in the tangential direction, thereby reducing the movement resistance of the first shaft body 210.

[0175] It can be understood that the sixth track is provided with a first inflection point.

[0176] It can be understood that the first radius of the first track 131 is greater than the fourth radius of the sixth track, and the first center of the first track 131 and the fourth center of the sixth track are both located on the front side of the first groove body 110. The structure is simple and can ensure the smooth movement of the first shaft body 210.

[0177] refer to Figure 14 From the starting end to the ending end of the second slot body 120 , that is, in the direction approaching the first side wall 313 , the second slot body 120 gradually moves away from the front side surface 312 .

[0178] The third distance L3 from the starting end of the second trough body 120 to the front side surface 312 of the door body 310 is greater than or equal to 1 mm and less than or equal to 4 mm. The fourth distance L4 from the second inflection point of the second trough body 120 to the front side surface 312 is greater than or equal to 10 mm and less than or equal to 15 mm. The seventh distance L7 from the ending end of the second trough body 120 to the front side surface 312 is greater than or equal to 15 mm and less than or equal to 27 mm.

[0179] The distance between the second slot 120 and the front side 312 of the door body 310 is also the minimum distance.

[0180] The second inflection point is the position where the third track 141 and the fourth track 142 of the second shaft body 220 are connected. The second inflection point can also be understood as the position of the second shaft body 220 when the door body 310 is at the first opening angle.

[0181] In some cases, the third distance L3 is greater than or equal to 2 mm and less than or equal to 3 mm, the fourth distance L4 is greater than or equal to 11 mm and less than or equal to 13 mm, and the seventh distance L7 is greater than or equal to 18 mm and less than or equal to 22 mm.

[0182] It can be understood that when the motion trajectory of the first shaft body 210 also includes the fifth trajectory 143, the sixth distance L6 from the third inflection point of the second groove body 120 to the front side surface 312, the sixth distance L6 is greater than or equal to 15 mm and less than or equal to 25 mm, and the third inflection point is located between the second inflection point and the terminal end of the second groove body 120.

[0183] The third inflection point is the position where the fourth track 142 and the fifth track 143 of the second shaft body 220 are connected. The third inflection point can also be understood as the position of the second shaft body 220 when the door body 310 is at the second opening angle.

[0184] The sixth distance may be greater than or equal to 17 mm and less than or equal to 21 mm.

[0185] It is understandable that a second midpoint is provided between the starting end of the second groove body 120 and the second inflection point. A ninth distance L9 is provided from the second midpoint to the front side surface 312 . The ninth distance L9 is greater than or equal to 6 mm and less than or equal to 12 mm.

[0186] The ninth distance L9 may be greater than or equal to 9 mm and less than or equal to 12 mm.

[0187] The second midpoint is the length center of the trajectory between the starting end of the second slot body 120 and the second inflection point.

[0188] It can be understood that a third midpoint is provided between the second inflection point and the third inflection point, and the third midpoint is at a tenth distance L10 from the front side surface 312 , and the tenth distance L10 is greater than or equal to 12 mm and less than or equal to 20 mm.

[0189] The tenth distance L10 may be greater than or equal to 15 mm and less than or equal to 17 mm.

[0190] The third center is the length center between the second inflection point and the third inflection point.

[0191] It is understandable that a fourth midpoint is provided between the third inflection point and the terminal end of the second slot body 120 , and an eleventh distance L11 is provided from the fourth midpoint to the front side surface 312 . The eleventh distance L11 is greater than or equal to 15 mm and less than or equal to 25 mm.

[0192] The eleventh distance L11 may be greater than or equal to 18 mm and less than or equal to 21 mm.

[0193] The fourth center is the length center between the third inflection point and the terminal end of the second slot body 120 .

[0194] It can be understood that between the third inflection point and the terminal end of the second groove body 120, the fifth trajectory 143 of the first shaft body 210 mentioned above can be referred to. The second groove body 120 extends in an arc with the center of the first shaft body 210 as the center and the third radius as the radius. The third radius is greater than or equal to 10 mm and less than or equal to 30 mm.

[0195] refer to Figure 15 As shown, the first shaft 210 moves along the first track 131 relative to the first slot 110 , and the second shaft 220 moves along the third track 141 relative to the second slot 120 . Both the first track 131 and the third track 141 are arc tracks.

[0196] Among them, the first track 131 and the third track 141 can be concentric arc tracks. For details, please refer to the relevant content in the embodiments of the present invention; however, the first track 131 and the third track 141 are not limited to concentric arc tracks. The center positions of the first track 131 and the third track 141 need to ensure smooth door opening. For example, the distance between the center of the first track 131 and the center of the second track 132 is less than a preset value, so that the first track 131 and the second track 132 are close to concentric arc tracks.

[0197] The door body 310 moves from the closed position to the first open angle, and the first side edge 311 of the front side surface 312 of the door body 310 moves inward along the left-right direction relative to the initial position of the first side edge 311. The first side edge 311 of the door body 310 does not move outward, and the first side edge 311 of the door body 310 does not interfere with the adjacent environmental structure 500, thereby ensuring the smooth opening and closing of the door body 310. The movement trajectory of the first side edge 311 can be referred to Figure 15 Middle trajectory line N1.

[0198] The rear side of the door seal 320 of the door body 310 is provided with a third side edge 321. When the door body 310 moves from the closed position to the first open angle, the distance that the third side edge 321 moves backward relative to the initial position of the third side edge 321 is less than the first preset distance, and the first preset distance is less than or equal to 1mm. The deformation of the door seal 320 when squeezed is small, which can ensure that the door seal 320 is smoothly separated from the box body 410 and avoid the door seal 320 and the box body 410 from getting stuck. The movement trajectory of the third side edge 321 can be referred to Figure 15 Middle trajectory line N3.

[0199] The above-mentioned inside and outside can be understood as the direction away from the door body 310 along the left and right directions is outside, and the direction close to the door body 310 along the left and right directions or the position inside the door body 310 is inside.

[0200] For details about the first opening angle, please refer to the above description. When the first opening angle is greater than or equal to 10° and less than or equal to 50°, the first opening angle can be set to 20° to 30°.

[0201] It is understood that between the closed position and the first open angle, the third side edge 321 first moves backward, then forward, then backward again, and then forward again. The motion trajectory of the third side edge 321 is affected by the motion trajectories of the first shaft 210 and the second shaft 220. The third side edge 321 adjusts its position back and forth in the front-to-back direction to reduce the distance it moves backward and the degree to which it is squeezed.

[0202] It is understood that when the door body 310 moves from the closed position to the first preset angle, the third side edge 321 moves backward. When the first opening angle is greater than or equal to 20° and less than or equal to 50°, and the first preset angle is less than or equal to 10°, that is, when the opening angle of the door body 310 is less than or equal to the first preset angle, the third side edge 321 continues to move backward, and the door seal 320 withstands the squeezing force, ensuring that the door body 310 can open and close stably and smoothly. For example, the first preset angle is greater than or equal to 4° and less than or equal to 7°.

[0203] It is understood that when the door body 310 moves from the first preset angle to the second preset angle, the third side edge 321 moves forward and then backward, and the second preset angle is greater than 10° and less than or equal to 16°. Between the first and second preset angles, the third side edge 321 reciprocates in the front-to-back direction. When the door body 310 is opened to a range of 7° to 10°, the third side edge 321 moves forward. When the door body 310 is opened to a range of 10° to 13°, the third side edge 321 moves backward. Before the door body 310 moves to the first opening angle, the first side edge 311 is separated from the front of the box body 410.

[0204] In some cases, the opening angle of the door body 310 is greater than 13°, and the third side edge 321 continues to move forward.

[0205] It can be understood that when the door body 310 opens from the first opening angle to the second opening angle, the first axis 210 moves along the second track 132 in the first groove body 110, and the second axis 220 moves along the fourth track 142 in the second groove body 120. The second track 132 is away from the fourth track 142, and the third side edge 321 moves forward a second preset distance, the second preset distance is greater than or equal to 2 mm and less than or equal to 25 mm, and the distance between the third side edge 321 and the front of the box body 410 gradually increases, and the door body 310 achieves stable opening and closing.

[0206] The second opening angle is greater than or equal to 60° and less than or equal to 95°. For relevant descriptions of the second opening angle, please refer to the above content.

[0207] It can be understood that when the door body 310 opens from the second opening angle to the third opening angle, the second axis 220 rotates around the first axis 210, the third opening angle is greater than or equal to 100° and less than or equal to 130°, the third side edge 321 continues to move forward, and the distance between the third side edge 321 and the front of the box body 410 can continue to increase, or it can increase to a maximum value and then decrease. At this time, the position of the third side edge 321 is not limited.

[0208] Regarding the case where the door body 310 is connected to the cabinet plate 330, the movement path of the cabinet plate 330 is:

[0209] In the closed position, the distance between the cabinet panel 330 and the adjacent environmental structure 500 is greater than the distance between the door body 310 and the adjacent environmental structure 500, and the movement trajectory of the second side edge 331 of the cabinet panel 330 is different from that of the first side edge 311 of the door body 310. Figure 15 Middle trajectory line N2.

[0210] In the case where "the first shaft body 210 moves along the first trajectory 131 relative to the first groove body 110, the second shaft body 220 moves along the third trajectory 141 relative to the second groove body 120, and the first trajectory 131 and the third trajectory 141 are both arc trajectories", the movement trajectory of the second side edge 331 of the cabinet panel 330 is described.

[0211] It will be appreciated that, from the closed position to the first open angle, the second side edge 331 moves outward in the left-right direction by a third predetermined distance relative to the initial position of the second side edge 331, and the third predetermined distance is less than or equal to 1.5 mm. In the closed position, if the second side edge 331 of the cabinet panel 330 is spaced 3 mm to 4 mm from the adjacent environmental structure 500, the second side edge 331 of the cabinet panel 330 will not interfere with the adjacent environmental structure 500, making the cabinet panel 330 suitable for embedded installation.

[0212] It is understood that when the door body 310 moves from the closed position to the first opening angle, the third predetermined distance first increases and then decreases. In the initial stage of door opening, the second side edge 331 moves outward a greater distance, and this distance does not increase with the opening angle of the door body 310. During the initial stage of door opening, the movement speed of the door body 310 is relatively low. Even if the gap between the second side edge 331 and the adjacent environmental structure 500 is small, interference or collision due to factors such as door vibration will not occur, resulting in smoother opening of the door body 310.

[0213] It is understood that when the door body 310 is opened to the third preset angle, the third preset distance is the largest, the third preset angle is greater than or equal to 13° and less than or equal to 18°, and the third preset distance can be a maximum of 1 mm to 1.5 mm.

[0214] It can be understood that between the first opening angle and the third opening angle, the second side edge 331 of the door body 310 moves outward in the left and right direction by a fourth preset distance relative to the initial position of the second side edge 331, and the fourth preset distance is less than or equal to 1 mm, which can ensure that the door body 310 and the cabinet panel 330 are both opened smoothly.

[0215] The door body 310 and the cabinet panel 330 that move along the above-mentioned trajectory are suitable for a door body 310 with a thinner thickness, such as a door body 310 with a thickness greater than or equal to 15 mm and less than or equal to 35 mm, and a cabinet panel 330 with a thickness greater than or equal to 5 mm and less than or equal to 25 mm, so that the thickness of the entire door assembly is between 20 mm and 60 mm, which is suitable for the installation of door assemblies of embedded devices and suitable for embedded home environments.

[0216] refer to Figures 4 to 6 As shown, the second aspect of the present invention further provides a refrigeration device, which includes a box body 400 and any one of the door assemblies described above, wherein the box body 400 is hinged to the door body through a first slot body and a second slot body.

[0217] By adopting the above-mentioned door assembly, the thickness of the door component can be effectively reduced, the volume of the refrigeration equipment can be reduced, and the competitiveness of the product can be enhanced.

[0218] The refrigeration device 400 may be a refrigerator, an ice chest, a refrigerator, a freezer, a wine cabinet, or other equipment with storage and refrigeration functions.

[0219] In conjunction with the above, an embodiment of the present invention will be described. A refrigeration device 400 includes a housing 410 and a door assembly. The housing 410 has a storage space therein, wherein the storage space has an opening. The door body 310 is used to open and close the opening. A hinge assembly is provided on the pivot side of the housing 410 and pivotally connects the housing 410 and the door body 310. The hinge assembly includes a first hinge 100 and a second hinge 200. The first hinge 100 is provided on one of the housing 410 and the door body 310, and the second hinge 200 is provided on the other. The second hinge is provided with at least a first shaft 210 and a second shaft 220. The first hinge 100 is provided with at least a first slot 110 and a second slot 120. The first shaft 210 is connected to the first slot 110 and can move along the guide direction of the first slot 110. The second shaft 220 is connected to the second slot 120 and can move along the second slot 120.

[0220] The process of the door body 310 from the closed position to the open position is as follows: when the door body 310 moves from the closed position to the open position, the opening angle of the door body 310 is less than or equal to 25°, the first shaft body 210 rotates along the arc of the first groove portion 111, and the second shaft body 220 rotates along the arc of the third groove portion 121, and the two shafts rotate in concentric circles; the opening angle of the door body 310 is between 25°-70°, the second shaft body 220 rotates around the elliptical groove, and the first shaft body 210 moves around the linear groove; the opening angle of the door body 310 is between 70°-100°, the first shaft body 210 rotates on a fixed axis, and the second shaft body 220 rotates with the center line of the first shaft body 210 as the center of the circle.

[0221] During the above-mentioned movement of the hinge assembly, the first side edge 311 of the door body 310 is within a vertical distance of 3 mm in the left-right direction relative to the outer edge of the box body 410, and the entire movement trajectory of the first side edge 311 is a movement backward and inward relative to the initial point of the first side edge 311, and the first side edge 311 is a curved arc motion; more specifically, it rotates around a fixed circle at about 0 to 25°, moves in an elliptical arc at about 25° to 70°, and rotates around a fixed circle at the last 30°; and the entire movement trajectory is on the right side of the initial point.

[0222] When the front side of the door body 310 is connected to the cabinet panel 330, the second side edge 331 of the cabinet panel 330 will exceed the initial position of the second side edge 331 during movement, but the gap between the second side edge 331 and the adjacent cabinet is guaranteed to be greater than or equal to 1mm, and the entire movement trajectory of the second side edge 331 relative to the initial position of the second side edge 331 is mainly backward movement, specifically first to the left rear, then to the right rear; more specifically, it rotates around a fixed center at about 0 to 25°, moves in an elliptical arc at about 25° to 70°, and then rotates around a fixed center at 30°; the entire movement trajectory exceeds the initial position of the second side edge 331 by no more than 2mm to the left. The second side edge 331 of the cabinet panel 330 exceeds the first side edge 311 of the door body 310 and the outer surface of the box body 410.

[0223] The third side edge 321 of the door seal 320 is located between the box body 410 and the door body 310. The entire movement trajectory direction of the third side edge 321 is right front movement relative to the initial position of the third side edge 321; specifically, it is a curved movement; more specifically, it rotates around a fixed circle at about 0 to 25°, moves in an elliptical arc at about 25° to 70°, and rotates around a fixed circle at the last 30°; and the entire movement trajectory does not exceed 2 mm behind the initial point.

[0224] The refrigeration appliance 400 of this embodiment of the present invention can solve the problem of the door opening of embedded refrigeration appliances 400 extending too far beyond the reference plane and colliding with adjacent cabinets. The door body 310 can be made thinner, and a cabinet panel 330 can be mounted on the front side of the door body 310. The hinge assembly described above can also be used in door assembly scenarios without a cabinet panel 330. In this scenario, the front side of the door assembly is flush with the front side of the adjacent cabinet.

[0225] In some cases, the first slot 110 includes a curved slot and a straight slot, and the second slot 120 includes curved slots with different curvatures. The notch of the second slot 120 is oriented toward the front of the door, and the first slot 110 is within the notch of the second slot 120, and the notch of the first slot 110 is also oriented toward the front of the door.

[0226] The front-to-back distance between the first shaft 210 and the second shaft 220 is 0-10 mm; the maximum front-to-back distance between the first trough 110 and the second trough 120 is 15-35 mm, and the thickness of the door body 310 is 15-35 mm.

[0227] In the closed position, the first shaft 210 is located in the first groove 110, and the second shaft 220 is located in the second groove 120. A first gap is reserved from the first shaft 210 to the starting end of the first groove 110, and a second gap is reserved from the second shaft 220 to the starting end of the second groove 120. The first gap and the second gap can be less than or equal to 2 mm to ensure that the door body has a negative closing angle of -2° to -5°.

[0228] When the first groove body 110 includes a first groove portion 111 and a second groove portion 112, the minimum distance from the starting end of the first groove portion 111 to the front side surface 312 of the door body 310 is a first distance L1, and the first distance L1 is greater than or equal to 3 mm and less than or equal to 4 mm. The minimum distance from the terminating end of the first groove portion 111 (that is, the starting end of the second groove portion 112) to the front side surface 312 of the door body 310 is a second distance C2, and the second distance C2 is greater than or equal to 5 mm and less than or equal to 7 mm; the minimum distance from the terminating end of the second groove portion 112 to the front side surface 312 of the door body 310 is a fifth distance L5, and the fifth distance L5 is greater than or equal to 4 mm and less than or equal to 5 mm.

[0229] When the second groove body 120 includes a third groove portion 121, a fourth groove portion 122 and a fifth groove portion 123, the minimum distance from the starting end of the third groove portion 121 to the front side surface 312 of the door body 310 is a third distance L3, and the third distance L3 is greater than or equal to 2 mm and less than or equal to 3 mm; the minimum distance from the terminating end of the third groove portion 121 (that is, the starting end of the fourth groove portion 122) to the front side surface 312 of the door body 310 is a fourth distance L4, and the fourth distance L4 is greater than or equal to 11 mm and less than or equal to 13 mm; the minimum distance from the terminating end of the fourth groove portion 122 (that is, the starting end of the fifth groove portion 123) to the front side surface 312 of the door body 310 is a sixth distance L6, and the sixth distance L6 is greater than or equal to 11 mm and less than or equal to 13 mm; the minimum distance from the terminating end of the fifth groove portion 123 to the front side surface 312 of the door body 310 is a seventh distance L7, and the seventh distance L7 is greater than or equal to 18 mm and less than or equal to 21 mm.

[0230] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A door assembly, characterized in that: include: The door body is provided with a first slot body (110) and a second slot body (120), wherein the first slot body (110) includes a first slot portion (111) and a second slot portion (112) that are connected, and the second slot body (120) includes a third slot portion (121) and a fourth slot portion (122) that are connected, and the third slot portion (121) is located at the head end of the second slot body (120); The distance between the first center line of the first groove portion (111) and the front side of the door body in the thickness direction of the door body is C1; the distance between the second center line of the second groove portion (112) and the front side of the door body in the thickness direction of the door body is C2; the distance between the third center line of the third groove portion (121) and the front side of the door body in the thickness direction of the door body is C3; the distance between the fourth center line of the fourth groove portion (122) and the front side of the door body in the thickness direction of the door body is C4; along the direction of the second groove body (120) away from the head end of the second groove body (120), the difference between C3 and C1 varies in the range of 0.8-8 mm; the difference between C4 and C2 gradually increases, and the difference between C4 and C2 varies in the range of 8-23 mm.

2. The door assembly according to claim 1, wherein: Along the direction of the second trough body (120) away from the head end of the second trough body (120), the difference between C3 and C1 first gradually decreases and then gradually increases; based on the gradual decrease in the difference between C3 and C1, the range of the difference between C3 and C1 is 0-2.5 mm; based on the gradual increase in the difference between C3 and C1, the range of the difference between C3 and C1 is 0-8 mm.

3. The door assembly according to claim 1, wherein: When the door is in a closed state, the difference between C3 and C1 is 0.8-2.5 mm.

4. The door assembly according to claim 1, wherein: When the door is in the open state, the difference between C4 and C2 is 18-23 mm.

5. The door assembly according to any one of claims 1 to 4, characterized in that: The second groove body (120) further comprises a fifth groove portion (123), wherein the fifth groove portion (123) is arranged at one end of the fourth groove portion (122) away from the third groove portion (121) and is connected to the fourth groove portion (122), and the fifth groove portion (123) extends in an arc shape around the second center with a third radius.

6. The door assembly according to claim 5, wherein: Along the direction of the second trough body (120) away from the head end of the second trough body (120), the distance between the fifth center line of the fifth trough portion (123) in the thickness direction of the door body and the front side of the door body is C5, and the difference between the maximum values ​​of C5 and C2 is in the range of 20-23 mm.

7. The door assembly according to claim 5, wherein: The first groove portion (111) extends in an arc shape around a first center with a first radius.

8. The door assembly according to claim 7, wherein: The third groove portion (121) extends in an arc shape around the first center with a second radius.

9. The door assembly according to any one of claims 1 to 4, characterized in that: The fourth groove portion (122) extends along the first ellipse.

10. The door assembly according to any one of claims 1 to 4, characterized in that The door body comprises a door main body and a first hinge (100), wherein the first hinge (100) is fixed to a hinge side of the door main body, and the first trough (110) and the second trough (120) are located on the first hinge (100).

11. The door assembly according to any one of claims 1 to 4, characterized in that: Also includes: The second hinge (200) is provided with a first shaft (210) and a second shaft (220), wherein the first shaft (210) is inserted into the first groove (110), and the second shaft (220) is inserted into the second groove (120).

12. The door assembly according to claim 10, wherein: The thickness of the door body is greater than or equal to 15 mm and less than or equal to 35 mm.

13. A refrigeration device, characterized in that: It comprises a box body and the door assembly according to any one of claims 1 to 12, wherein the box body is hinged to the door body through the first slot body and the second slot body.

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