Door assembly and refrigeration device

Abstract

Provided are a door assembly and a refrigeration device (400). The door assembly comprises a door body (310) and a second hinge (200), the door body (310) having, on the hinged side, a first slot (110) in which a first shaft (210) is inserted and a second slot (120) in which a second shaft (210) is inserted, wherein the first slot (110) is located on the front side of the second slot (120); the first slot (110) has at least one of an arc trajectory and a straight trajectory; and the distance from a starting end of the second slot (120) to a front side face (312) of the door body (310) is a third distance, the third distance being greater than or equal to 1 mm and less than or equal to 4 mm, and the distance from a terminal end of the second slot (120) to the front side face (312) of the door body (310) is a seventh distance, the seventh distance being greater than or equal to 15 mm and less than or equal to 27 mm. By arranging the first slot (110) on the front side of the second slot (120), the distance from the second slot (120) to the front side face (312) is controlled to be reduced, so that the thickness of the door body (310) is reduced.

Description

Door assemblies and refrigeration equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202420570769.6, filed on March 19, 2024, entitled “Door assembly and refrigeration equipment,” which is incorporated herein by reference in its entirety. Technical Field

[0003] The present application relates to the field of hinge technology, and in particular to door assemblies and refrigeration equipment. Background Art

[0004] When the door of a cabinet unit with a door and a cabinet is opened relative to the cabinet, the door may extend beyond the outer wall of the cabinet unit, causing interference between the door and the surrounding structure in which the cabinet unit is installed. For cabinet units that are embedded, the portion of the door that extends beyond the outer wall of the cabinet unit may interfere with the wall, embedded cabinets, or electrical appliances, affecting the door opening and closing experience.

[0005] In the related art, in the technical solutions that can avoid interference between the door body and the wall, embedded cabinets or electrical appliances, the thickness of the door body is relatively large, which makes it difficult to meet the thickness requirements of the embedded door that needs to be hung with cabinet panels.

[0006] Summary of the Invention

[0007] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes a door assembly in which a first groove is arranged in front of a second groove, and the distance between the second groove and the front side is controlled to decrease, thereby reducing the thickness of the door body. The door assembly is suitable for ultra-thin doors and embedded doors.

[0008] The present application also provides a refrigeration device.

[0009] A door assembly according to an embodiment of the first aspect of the present application includes:

[0010] A door body, wherein a hinged side of the door body is provided with a first slot for inserting a first shaft body and a second slot for inserting a second shaft body, the first slot is located in front of the second slot, the door body is provided with a vertical front side surface and a first side wall, the first side wall is provided on the hinged side of the door body; the first slot includes at least one of an arc track and a straight track;

[0011] Along the starting end to the ending end of the second groove body, the second groove body is away from the front side surface and close to the first side wall. The third distance from the starting end of the second groove body to the front side surface of the door body is greater than or equal to 1 mm and less than or equal to 4 mm. The seventh distance from the ending end of the second groove body to the front side surface of the door body is greater than or equal to 15 mm and less than or equal to 27 mm.

[0012] According to the door assembly of the embodiment of the present application, the first groove body defines the movement trajectory of the first axis body, and the second groove body defines the movement trajectory of the second axis body. The first axis body moves from the starting end to the ending end of the first groove body and the second axis body moves from the starting end to the ending end of the second groove body, then the door body opens to the preset door opening angle, and the first groove body and the second groove body are arranged based on the door body. In the direction close to the first side wall, the first groove body and the second groove body both extend toward the rear side of the front side surface, and the first groove body is arranged on the front side of the second groove body. The position of the second groove body will affect the thickness of the door body. The distance from the starting end of the second groove body to the front side surface is less than or equal to 4mm, which can make the second groove body close to the front side surface and make full use of the space of the door body. The distance from the ending end of the second groove body to the front side surface is less than or equal to 27mm, which can reduce the distance from the second groove body to the front side surface. It can be suitable for door bodies with thinner thickness to achieve the purpose of thinning the door body. It is suitable for ultra-thin doors and embedded doors.

[0013] According to one embodiment of the present application, the second groove body includes a third track and a fourth track, the third track and the fourth track are connected at the second inflection point, the fourth distance L4 from the second inflection point of the second groove body to the front side surface, the fourth distance L4 is greater than or equal to 10 mm and less than or equal to 15 mm, the second axis is located at the second inflection point, the door body is opened to a first opening angle, the first opening angle is greater than or equal to 10° and less than or equal to 50°.

[0014] According to one embodiment of the present application, the midpoint of the third trajectory is the second midpoint, and the ninth distance L9 from the second midpoint to the front side surface is greater than or equal to 6 mm and less than or equal to 12 mm.

[0015] According to one embodiment of the present application, the midpoint of the fourth track is the third midpoint, and the third midpoint is at a tenth distance L10 from the front side surface. The tenth distance L10 is greater than or equal to 12 mm and less than or equal to 20 mm.

[0016] According to one embodiment of the present application, the third trajectory is an arc trajectory, and the fourth trajectory is an elliptical trajectory.

[0017] According to one embodiment of the present application, the second groove body includes a fifth track, the fifth track is connected to the fourth track at the third inflection point, the third inflection point of the second groove body is a sixth distance L6 to the front side surface, the sixth distance L6 is greater than or equal to 15 mm and less than or equal to 25 mm, the second axis is located at the third inflection point, the door body is opened to a second opening angle, the second opening angle is greater than or equal to 60° and less than or equal to 95°.

[0018] According to one embodiment of the present application, the midpoint of the fifth track is the fourth midpoint, and the eleventh distance L11 from the fourth midpoint to the front side surface is greater than or equal to 15 mm and less than or equal to 25 mm.

[0019] According to one embodiment of the present application, the fifth trajectory is an arc trajectory.

[0020] According to one embodiment of the present application, the angle between the tangent of the third track and the front side of the door body decreases, and the angle between the switch of the fourth track and the front side of the door body decreases.

[0021] According to one embodiment of the present application, the angle between the tangent line of the third track and the front side surface of the door body is less than or equal to 65°;

[0022] And / or, the angle between the tangent of the fourth trajectory and the front side surface of the door body is less than or equal to 45°.

[0023] According to one embodiment of the present application, the angle between the tangent of the fifth track and the front side surface of the door body is less than or equal to 30°.

[0024] According to the second embodiment of the present application, the refrigeration device includes a box body and the door assembly as described above, wherein the box body is provided with a first shaft body and a second shaft body so that the box body and the door body are hinged.

[0025] According to the refrigeration device of the embodiment of the present application, the thickness of the door body of the refrigeration device is thinned, making it easier to open the door, and is suitable for embedded refrigeration devices.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] FIG1 is a schematic diagram of the three-dimensional structure of a hinge assembly provided in an embodiment of the present application installed in a refrigeration device;

[0029] FIG2 is a schematic diagram of a partially enlarged structure of portion A in FIG1 ;

[0030] FIG3 is a schematic top view of the hinge assembly provided in an embodiment of the present application installed in a refrigeration device;

[0031] FIG4 is a schematic diagram of a partially enlarged structure of portion B in FIG3 ;

[0032] 5 is a structural diagram of the first hinge and the second hinge of the hinge assembly provided in an embodiment of the present application in an installed state;

[0033] FIG6 is a schematic structural diagram of the hinge assembly provided in an embodiment of the present application 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;

[0034] FIG7 is a structural diagram of the hinge assembly provided in an embodiment of the present application at a first opening angle. The figure takes the first opening angle of 25° as an example, where the door body is opened 25° relative to the box body.

[0035] FIG8 is a structural diagram of the hinge assembly provided in an embodiment of the present application at a second opening angle. The figure takes the second opening angle of 70° as an example, where the door body is opened 70° relative to the box body.

[0036] FIG9 is a schematic structural diagram of the hinge assembly provided in an embodiment of the present application at a third opening angle. The figure takes the third opening angle of 100° as an example, where the door body is opened 100° relative to the box body.

[0037] FIG10 is a schematic diagram of the distances from the first track and the second track to the front side of the hinge assembly provided in an embodiment of the present application;

[0038] 11 is a schematic diagram of the distances from the third track, the fourth track, and the fifth track of the hinge assembly to the front side surface according to an embodiment of the present application;

[0039] 12 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 in an embodiment of the present application;

[0040] 13 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 in an embodiment of the present application;

[0041] FIG14 is a schematic structural diagram of a hinge assembly provided in an embodiment of the present application installed on a refrigeration device, wherein 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;

[0042] Reference numerals:

[0043] 100, first hinge; 110, first slot; 111, first slot portion; 112, second slot portion; 113, sixth slot portion; 114, first avoidance slot portion; 120, second slot; 121, third slot portion; 122, fourth slot portion; 123, fifth slot portion; 124, second avoidance slot portion; 131, first track; 132, second track; 141, third track; 142, fourth track; 143, fifth track;

[0044] 200, second hinge; 210, first shaft; 220, second shaft;

[0045] 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;

[0046] 400. Refrigeration equipment; 410. Cabinet; 500. Environmental structure. DETAILED DESCRIPTION

[0047] 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.

[0048] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0049] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0050] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0052] When a door body is mounted to a fixed box or door frame via a hinge assembly, the door body may interfere with or collide with adjacent boxes, cabinets, etc. during movement. Therefore, the door body's movement path is adjusted by the hinge assembly to ensure that the door body can be opened and closed stably. A hinge assembly capable of adjusting the door body's movement path is relatively long in the thickness direction of the door body, making it difficult to adapt to thinner door bodies and limiting its application scenarios. To address the aforementioned issues, a hinge assembly according to an embodiment of the present application is provided, which is suitable for thinner door bodies and can also prevent interference or collision with adjacent boxes, cabinets, etc. during movement of the door body.

[0053] Before describing the hinge assembly of the embodiment of the present application, the application scenarios of the hinge assembly of the embodiment of the present application are described, but the application scenarios of the hinge assembly of the embodiment of the present application are not limited to the enumerated application scenarios.

[0054] Referring to Figures 1 to 4, the hinge assembly of the embodiment of the present application can be applied to a door body 310 that is openable and closable 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 recessed door body 310, 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.

[0055] 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.

[0056] 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.

[0057] 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).

[0058] An embodiment of the first aspect of the present application, with reference to Figures 5 to 9, provides a hinge assembly, including: a first hinge 100 and a second hinge 200, the first hinge 100 is provided with a first slot body 110 and a second slot body 120, the second hinge 200 is provided with a first shaft body 210 and a second shaft body 220, the first shaft body 210 is inserted into the first slot body 110, and the second shaft body 220 is inserted into the second slot body 120.

[0059] The first hinge 100 and the second hinge 200 are arranged as a double-axis double-groove matching structure. The first axis 210 moves in the first groove 110, and the second axis 220 moves in the second groove 120 to drive the first hinge 100 and the second hinge 200 to open or close relative to each other. When one of the first hinge 100 and the second hinge 200 is installed on the door body 310 and the other is installed on the box body 410 or the door frame, the opening and closing control of the door body 310 can be realized.

[0060] In the following embodiments, an example is provided in which one of the first hinge 100 and the second hinge 200 is disposed on the door body 310 and the other is disposed on the box body 410. The box body 410 has an opening on the front side, and the door body 310 switches between an open state and a closed state of the box body 410. The hinged side of the first hinge 100 or the second hinge 200 disposed on the door body 310 (or box body 410) can be understood as being integrally formed with the door body 310 (or box body 410), or as being a separate component mounted on the door body 310 (or box body 410).

[0061] 5 and 6 , the first slot body 110 includes a first slot portion 111 and a second slot portion 112 that are interconnected, and the second slot body 120 includes a third slot portion 121 and a fourth slot portion 122 that are interconnected. The first slot portion 111 extends along an arc around a first center Q1 with a first radius R1, and the third slot portion 121 extends along an arc around the first center Q1 with a second radius R2. The first slot portion 111 and the third slot portion 121 are configured as slot structures with concentric centers but different radii. When the first shaft body 210 is in the first slot portion 111, the second shaft body 220 is located within the third slot portion 121. At this time, the first shaft body 210 and the second shaft body 220 can move along concentric circular paths. A second groove portion 112 is provided at the terminal end of the first groove portion 111 so that the first shaft body 210 can move from the first groove portion 111 to the second groove portion 112 ; a fourth groove portion 122 is provided at the terminal end of the third groove portion 121 so that the second shaft body 220 can move from the third groove portion 121 to the fourth groove portion 122 .

[0062] The fourth groove portion 122 extends along the first ellipse, and the distance between the centerline of the first shaft body 210 and the centerline of the second shaft body 220 increases in the direction away from the first groove portion 111 and the third groove portion 121, thereby ensuring that the door body 310 opens relative to the box body 410 as quickly as possible. The increase in the distance between the second groove portion 112 and the fourth groove portion 122 can be understood as an increase in the distance between the centerlines of the second groove portion 112 and the fourth groove portion 122, or an increase in the centerline of the trajectory of the second groove portion 112 and the centerline of the trajectory of the fourth groove portion 122 intersecting.

[0063] 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.

[0064] 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 moving to the left side of the left door body 310 and moving to the right side of the right door body 310 (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-mentioned 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.

[0065] 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.

[0066] 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. 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.

[0067] Referring to Figure 6, 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.

[0068] As shown in Figures 7 and 8 , 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 positioned 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°.

[0069] Based on the movement of the first shaft 210 in the first slot 110 and the movement of the second shaft 220 in the second slot 120, the relative movement paths of the first shaft 210 and the first slot 110, and the relative movement paths of the second shaft 220 and the second slot 120 are not limited here, and the relative movement paths can be set as needed. For example, the first shaft 210 can move along an arc trajectory or rotate along a fixed axis in the first slot 111, and the second shaft 220 can move along an arc trajectory or rotate along a fixed axis in the third slot 121. The movement paths of the first shaft 210 and the second shaft 220 are diverse and will not be listed one by one. However, the movement mode of the first shaft 210 in the first slot 110 and the movement mode of the second shaft 220 in the second slot 120 are not limited to a single mode. By appropriately adjusting the extension paths or structures of the first slot 110 and the second slot 120, a variety of relative movement modes can be provided.

[0070] In the hinge assembly of the embodiment of the present application, the first axis 210 moves in the first groove body 110, and the second axis 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 can be 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.

[0071] 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.

[0072] It should also be noted that the hinge assembly of the embodiment of the present application 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.

[0073] An embodiment of the motion trajectory of the first shaft 210 and the second shaft 220:

[0074] Referring to Figure 6, from the initial position to the open position (corresponding to the closed position and the open position of the door body), 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.

[0075] 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. At least one side wall of the first groove body 110 cooperates 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. At least one side wall of the second groove body 120 cooperates to ensure that the second shaft body 220 moves along the third track 141.

[0076] As shown in Figures 7 and 8 , in the open position, between the first and second opening angles, the first shaft 210 moves along the second trajectory 132, and the second shaft 220 moves along the fourth trajectory 142. The fourth trajectory 142 is a first elliptical trajectory. As the door opening angle increases, the second trajectory 132 and the fourth trajectory 142 move away from each other. The specific path of the second trajectory 132 is not limited. That is, the first shaft 210 can move along the guide direction of the second groove 112, and the second shaft 220 can move along the guide direction of the fourth groove 122. In addition, the difference in distance between the second groove 112 and the fourth groove 122 and the front side 312 of the door body 310 increases in the direction away from the first groove 111. It should be noted that during the door opening process, the first shaft 210 and the second shaft 220 first rotate concentrically. After completing the concentric rotation, the second shaft 220 moves along the first elliptical trajectory, and the first shaft 210 moves within the second groove 112.

[0077] It should be noted that as the door opening angle increases, the second track 132 and the fourth track 142 move away from each 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 or center of the second groove portion 112 intersects with the center of the fourth groove portion 122, ensuring that the door body 310 can be opened and closed smoothly.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] In conjunction with the above-described first track 131, second track 132, third track 141, and fourth track 142, the distance from the first set position in the first trough 110 and the second trough 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 110 and the second trough 120 to the front side 312 of the door body 310 is the largest. The difference in distance between the first set position and the second set position from the front side 312 of the door body 310 is greater than or equal to 13 mm and less than or equal to 33 mm. The first set position can be a point on the first trough 110 or the second trough 120, and the second set position can also be a point on the first trough 110 or the second trough 120.

[0082] In the front-to-back direction of the hinge assembly, the distance from the front end to the rear 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.

[0083] 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 trough 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 trough body. Using the hinge assembly of the embodiment of the present application, 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.

[0084] Regarding the first groove portion 111 and the third groove portion 121:

[0085] The first slot 111 and the third slot 121 have the same central angle. 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. That is, when the first hinge 100 and the second hinge 200 are 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.

[0086] 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 via the first shaft body 210 .

[0087] 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.

[0088] The first center Q1 is located on the preset reference plane 323, on the first side of the preset reference plane 323, or on 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 on 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.

[0089] Based on the first circle center being 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 may not have an upper limit.

[0090] Since the first circle center Q1 is located on the first side of the preset reference plane 323 , the distance from the first circle 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.

[0091] 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.

[0092] 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.

[0093] The first radius R1 is greater than or equal to 5 mm, and the second radius R2 is greater than or equal to 20 mm. The first radius R1 can be set to 15 mm to 30 mm, and the second radius R2 can be set to 20 mm to 40 mm. The thickness of the door body 310 can be controlled between 15 mm and 35 mm. The sizes of the first and second radii are not limited and can be adjusted according to the thickness of the door body 310.

[0094] The angle between the first hinge 100 and the second hinge 200 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 thickness direction is greater than or equal to 4 mm and less than or equal to 8 mm, such as 5 mm.

[0095] In the initial position, the distance between the centerline of the first shaft 210 and the centerline of 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 reduces 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 centerline of the first shaft 210 and the centerline of 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.

[0096] Regarding the second groove portion 112 and the fourth groove portion 122:

[0097] As shown in Figures 7 and 8 , the second groove 112 extends along a straight line or 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 112 extends along a straight line, the structure is simple; when the second groove 112 extends along the second ellipse, the first shaft 210 and the second shaft 220 can move smoothly.

[0098] 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 extension line of the second groove portion 112 intersects with the center of the first ellipse of the fourth groove portion 122, the extension line of the second trajectory 132 passes through the center of the first ellipse, and the extension 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.

[0099] The first shaft 210 travels a first length in the second groove 112, and the second shaft 220 travels a second length in the fourth groove 122, the second length being greater than the first length. That is, the length of the fourth track 142 is greater than the length of the second track 132, ensuring smooth door opening and closing.

[0100] 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 a door body 310 with a smaller thickness.

[0101] In some cases, when the second groove portion extends along a straight line, the elliptical trajectory of the fourth groove portion at any point (x, y) in the coordinate system may satisfy the following relationship:

[0102] x=M / sin(θ)*cos(90°-a-θ)-R*sin(a), y=M / sin(θ)*sin(90°-a-θ)

[0103] 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 first 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. The origin of the coordinate system defined by the first coordinate axis X and the second coordinate axis Y is the center of the first ellipse.

[0104] Regarding the second tank 120:

[0105] As shown in Figures 8 and 9, the second slot body 120 further includes a fifth slot portion 123. The fifth slot portion 123 is disposed at an end of the fourth slot portion 122 distal from the third slot portion 121 and communicates with the fourth slot portion 122. The fifth slot portion 123 extends in an arc shape around the second center Q2 at a third radius R3. The fifth slot portion 123 extends along an arc path, and the second shaft body 220 can move along the arc path within the fifth slot portion 123, thereby allowing the first hinge 100 and the second hinge 200 to open to a third opening angle, which is greater than the second opening angle.

[0106] 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.

[0107] As the second shaft 220 moves along the fifth track 143 , the first shaft 210 rotates in the first slot 110 . The movement of the first shaft 210 is simple and the structure of the first slot 110 is simple.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] When the first slot body 110 includes a first slot portion 111 and a second slot portion 112 and the second slot body 120 is provided with a fifth slot portion 123, in the open position, the second shaft body 220 can be located in the fifth slot portion 123 and the first shaft 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.

[0113] 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. 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, thereby reducing the length of the first hinge 100 in the front-to-back direction and making it suitable for use with a door body 310 having a smaller thickness. In the open position, at an 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.

[0114] Regarding the first tank body 110 and the second tank body 120:

[0115] 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 allows the first groove portion 111 and the second groove portion 112 to 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.

[0116] 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 via 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. The second shaft body 220 can move smoothly between the third groove portion 121 and the fourth groove portion 122, avoiding any jamming during the movement of the second shaft body 220.

[0117] 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 can 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, preventing any jamming during the movement of the second shaft 220.

[0118] The diameter of the first shaft 210 is greater than that of the second shaft 220. Correspondingly, the width of the first trough 110 is greater than that of the second trough 120, with the width being the length perpendicular to the centerline. The first shaft 210 serves as the primary axis, while the second shaft 220 serves as the secondary axis. The first shaft 210 carries the majority of the load. By increasing the diameter of the first shaft 210, its structural strength can be enhanced.

[0119] The length of the first shaft 210 is greater than that of the second shaft 220. Accordingly, the depth of the first slot 110 is greater than that of the second slot 120. During installation, the first shaft 210 is first inserted into the bottom of the first slot 110, and then the second shaft 220 is 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. This design of different axial lengths simplifies the positioning and installation of the first hinge 100 and the second hinge member.

[0120] As shown in Reference Figure 6, a first avoidance groove portion 114 is provided at the starting end of the first groove body 110, a second avoidance groove portion 124 is provided at the starting end of the second groove body 120, the door body 310 is in a closed position, a first gap is provided between the first shaft body 210 and the end of the first avoidance groove portion 114, a second gap is provided between the second shaft body 220 and the second avoidance groove portion 124, the door body 310 is in a negative angle closed state, the first shaft body 210 is located in the first avoidance groove portion 114, and the second shaft body 220 is located in the second avoidance groove portion 124.

[0121] In some cases, the first avoidance groove portion 114 and the second avoidance groove portion 124 are both centered around the first circle. The first avoidance groove portion 114 is an arc groove with a first radius, and the second avoidance groove portion 124 is an arc groove with a second radius. The first avoidance groove wall extends along the same trajectory as the first groove portion 111, and the second avoidance groove portion 124 extends along the same trajectory as the third groove portion 121.

[0122] About opening angle:

[0123] In the open position, the angle between the first hinge 100 and the second hinge 200 is less than or equal to a first opening angle, which is greater than or equal to 10° and less than or equal to 50°. At this point, 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°. The transition from the initial position to the first opening angle is illustrated in Figures 6 and 7.

[0124] When the door body 310 moves from the closed position to the open position at the first opening angle, the first shaft 210 moves along the first track 131 toward the starting end of the second track 132 and the second shaft 220 moves along the third track 141 toward the starting end of the fourth track 142.

[0125] The angle between 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. The second opening angle is greater than or equal to 60° and less than or equal to 95°. 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 between 65° and 75°, such as 70°. The transition from the first opening angle to the second opening angle is illustrated in Figures 7 and 8.

[0126] When the door body 310 moves from the first opening angle to the second opening angle in the open position, the first shaft 210 moves along the second track 132 toward the terminal end away from the first track 131 and the second shaft 220 moves along the fourth track 142 toward the terminal end away from the third track 141.

[0127] Because the second slot 120 includes the fifth slot portion 123, the 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°. In this case, 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 between 100° and 110°, such as 105°. The transition from the second opening angle to the third opening angle is illustrated in Figures 8 and 9.

[0128] Based on the fact that the second slot body 120 includes the fifth slot portion 123, during the movement of the door body 310 from the second opening angle to the third opening angle, the first shaft body 210 rotates in the second slot portion 112 and the second shaft body 220 moves along the fifth track 143 toward the terminal end away from the fourth track 142.

[0129] The second shaft 220 moves along a fifth trajectory 143, which is an arc formed around the centerline of the first shaft 210 with a third radius R3. 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 thereby reducing the thickness of the door body 310.

[0130] 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 .

[0131] 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.

[0132] It should be noted that the ranges of the first and second opening angles are affected by multiple factors, such as ensuring a smooth transition between the first and second grooves 111, 112, the third and fourth grooves 121, 122, and the fourth and fifth grooves 122, 123, while meeting the thickness requirements of the door body 310. The third opening angle corresponds to the maximum opening angle of the door body 310 and is set based on the door opening requirements of the door body 310.

[0133] 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.

[0134] 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°.

[0135] 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.

[0136] Regarding the distances between the first shaft 210 and the second shaft 220 and the front side 312 of the door body 310:

[0137] 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.

[0138] Among them, the first track 131 and the third track 141 can be concentric arc tracks, and for details, please refer to the relevant content in the embodiments of the present application; 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.

[0139] The following content is described with reference to Figures 10 and 11 based on the dynamic trajectories of the first and second shafts 210 and 220. It should be noted that the first, second, third, fourth, and fifth trajectories in Figures 10 and 11 may, but are not limited to, extend along the aforementioned trajectories. The dynamic trajectories of the first and second shafts are embodied through distance parameters in Figures 10 and 11.

[0140] As shown in FIG10 , in the first trajectory 131, the distance from the center of the first shaft 210 to the front side 312 increases from a first distance a1 to a second distance a2. The first distance a1 is greater than or equal to 4 mm and less than or equal to 7.8 mm, and the second distance a2 is greater than or equal to 8 mm and less than or equal to 13 mm. The first shaft 210 gradually moves away from the front side 312. At the starting position of the first trajectory 131, the minimum distance from the center of the first shaft 210 to the front side 312 of the door body 310 is 1 mm. At this point, the front end of the first trough 110 is coplanar with the front side 312.

[0141] The first distance a1 may be greater than or equal to 6 mm and less than or equal to 7 mm, and the second distance a2 may be greater than or equal to 8 mm and less than or equal to 10 mm.

[0142] As shown in Figure 11, in the third trajectory 141, the distance from the center of the second shaft 220 to the front side 312 increases from a third distance a3 to a fourth distance a4. The third distance a3 is greater than or equal to 4 mm and less than or equal to 7 mm, and the fourth distance a4 is greater than or equal to 13 mm and less than or equal to 18 mm. At the starting position of the third trajectory 141, the radius of the second shaft 220 is 3 mm, and the minimum distance from the center of the second shaft 220 to the front side 312 of the door body 310 is 1 mm. At this point, the front end of the second groove 120 is coplanar with the front side 312.

[0143] The third distance a3 may be greater than or equal to 5 mm and less than or equal to 6 mm, and the fourth distance a4 may be greater than or equal to 14 mm and less than or equal to 16 mm.

[0144] The difference between the first distance a1 and the third distance a3 can be understood as the aforementioned first distance l1.

[0145] At the midpoint of the first track 131, the distance a8 from the center of the first shaft 210 to the front side 312 is greater than or equal to 7 mm and less than or equal to 10 mm. For example, at the midpoint of the first track 131, the distance a8 from the center of the first shaft 210 to the front side 312 is greater than or equal to 8 mm and less than or equal to 9 mm.

[0146] The midpoint of the first track 131 can be understood as half the arc length of the first track 131 .

[0147] At the midpoint of the third track 141 , the distance a9 from the center of the second shaft 220 to the front side 312 is greater than or equal to 9 mm and less than or equal to 12 mm. For example, the distance a9 from the center of the second shaft 220 to the front side 312 is greater than or equal to 9.5 mm and less than or equal to 11 mm.

[0148] The midpoint of the third track 141 can be understood as half the arc length of the third track 141 .

[0149] When the first track 131 and the third track 141 are concentric arc tracks, reference may be made to the above description of the first track 131 and the third track 141 , and the first track 131 and the third track 141 may adopt the above distance relationship.

[0150] When the door body 310 moves from the first opening angle to the second opening angle, the first shaft 210 moves along the second track 132, and the second shaft 220 moves along the fourth track 142. The second track 132 and the fourth track 142 cooperate to form a P-shaped slide. The second track 132 and the fourth track 142 can refer to the above description.

[0151] As shown in FIG10 , along the second trajectory 132, the distance between the center of the first shaft 210 and the front side 312 decreases from the second distance a2 to a fifth distance a5, which is greater than or equal to 6 mm and less than or equal to 13 mm. At the midpoint of the second trajectory 132, the distance a10 between the center of the first shaft 210 and the front side 312 is greater than or equal to 7 mm and less than or equal to 9 mm.

[0152] For example, the fifth distance a5 is greater than or equal to 7 mm and less than or equal to 9 mm. At the midpoint of the second track 132 , a distance a10 from the center of the first shaft 210 to the front side surface 312 is greater than or equal to 7 mm and less than or equal to 8 mm.

[0153] It can be understood that the movement trajectory of the first shaft body 210 is: the first shaft body 210 first moves away from the front side surface 312 and then approaches the front side surface 312. In the first trajectory 131, the first shaft body 210 gradually moves away from the front side surface 312. In the second trajectory 132, the first shaft body 210 gradually approaches the front side surface 312. The inflection point of the movement trajectory of the first shaft body 210 is located at the connection between the first trajectory 131 and the second trajectory 132.

[0154] 11 , along the fourth trajectory 142, the distance between the center of the second shaft 220 and the front side 312 increases from a fourth distance a4 to a sixth distance a6, where the sixth distance a6 is greater than or equal to 18 mm and less than or equal to 23 mm. At the midpoint of the fourth trajectory 142, the distance between the center of the second shaft 220 and the front side 312 is greater than or equal to 16 mm and less than or equal to 20 mm.

[0155] For example, the sixth distance a6 is greater than or equal to 21 mm and less than or equal to 22 mm. At the midpoint of the fourth track 142 , the distance a11 from the wall of the second shaft 220 to the front side surface 312 is greater than or equal to 18 mm and less than or equal to 20 mm.

[0156] It can be understood that the movement trajectory of the second shaft 220 is continuously moving away from the front side surface 312 .

[0157] When the door body 310 moves from the second opening angle to the third opening angle, the first shaft body 210 rotates along a fixed axis, and the second shaft body 220 moves along the fifth track 143, which is an arc track. The fifth track 143 can refer to the above content.

[0158] The distance from the center of the first shaft 210 to the front side surface 312 is between the second distance a2 and the fifth distance a5, that is, the first shaft 210 is located at a point in the second track 132. If the first shaft 210 is located at the terminal end of the second track 132, the distance from the center of the first shaft 210 to the front side surface 312 is the fifth distance a5.

[0159] 11 , in the fifth track 143 , the distance from the center of the second shaft 220 to the front side 312 increases from the sixth distance a6 to the seventh distance a7 , and the seventh distance a7 is greater than or equal to 18 mm and less than or equal to 30 mm.

[0160] It should be noted that the seventh distance a7 can be, but is not limited to, set at the terminal end of the fifth track 143. The seventh distance a7 can also be set at the midpoint of the fifth track 143 or a position close to the terminal end. For example, in the fifth track 143, the second shaft 220 can first move away from the front side surface 312 and then move closer to the front side surface 312.

[0161] The minimum distance between the wall of one of the first and second shaft bodies 210 and 220 closest to the front side 312 and the front side 312 is a first minimum distance, and the maximum distance between the second shaft body 220 and the front side 312 is a first maximum distance. The difference between the first maximum distance and the first minimum distance is greater than or equal to 13 mm and less than or equal to 33 mm, resulting in a thickness of the door body 310 greater than or equal to 15 mm and less than or equal to 35 mm. The front and rear ends of the door body 310 each reserve at least 1 mm of wall thickness for the first and second grooves 110 and 120.

[0162] When the distance from the wall of the first shaft body 210 to the front side surface 312 is the smallest, the distance from the wall of the first shaft body 210 to the front side surface 312 is the first minimum distance; when the distance from the wall of the second shaft body 220 to the front side surface 312 is the smallest, the distance from the wall of the second shaft body 220 to the front side surface 312 is the first minimum distance.

[0163] The following content describes the static trajectory of the first trough body 110 and the second trough body 120 with reference to Figures 12 and 13. It should be noted that the first trough body and the second trough body in Figures 12 and 13 can extend along the above-mentioned trajectory, but are not limited to it. The positional relationship between the first trough body and the second trough body is reflected by the distance parameter in Figures 12 and 13.

[0164] 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;

[0165] 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.

[0166] Referring to FIG. 12 , regarding the first tank body 110 :

[0167] 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.

[0168] A first distance L1 is defined between the starting end of the first trough 110 and the front side surface 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 L2 is defined between the first inflection point of the first trough 110 and the front side surface 312. The second distance L2 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 surface 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 L2, the first trough 110 extends toward the front side surface 312, which helps reduce the distance between the first trough 110 and the front side surface 312, thereby reducing the thickness of the door body 310.

[0169] The distance between the first slot 110 and the front side 312 of the door body 310 is the minimum distance.

[0170] The first inflection point can be understood as the point where the extension trajectory of the first trough body 110 changes. When the first trough body 110 first extends along the arc trajectory and then extends along the straight line, the intersection of the arc and the straight line is the first inflection point; when the first trough body 110 extends along the arc trajectory and then extends along the elliptical trajectory, the intersection of the arc and the ellipse is the first inflection point.

[0171] 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.

[0172] A first midpoint is provided between the starting end of the first groove body 110 and the first inflection point. The first shaft body 210 is located at the first midpoint of the first groove body 110. 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.

[0173] The distance from the first midpoint to the front side surface 312 can be understood as the minimum distance from the first slot body corresponding to the first midpoint to the front side surface.

[0174] 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.

[0175] Among them, the first opening angle can refer to the above content.

[0176] 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.

[0177] The first groove body 110 includes a first track 131 and a second track 132. The first track 131 is a circular arc track, and the second track 132 is a straight track. A sixth track is provided between the first track 131 and the second track 132, that is, a sixth groove portion 113 is provided between the first groove portion 111 and the second groove portion 112. 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.

[0178] The sixth track is provided with a first inflection point.

[0179] The first radius of the first track 131 is greater than the fourth radius of the sixth track. The first center of the first track 131 and the fourth center of the sixth track are both located in front of the first slot 110. The structure is simple and can ensure smooth movement of the first shaft 210.

[0180] Referring to FIG. 13 , regarding the second tank body 120 :

[0181] 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 .

[0182] 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.

[0183] Among them, the distance from the second inflection point to the front side surface 312 can be understood as the minimum distance from the inner wall surface of the second groove body to the front side surface, and the distance from the second groove body 120 to the front side surface 312 of the door body 310 is also the minimum distance.

[0184] The distances from the inflection point of the second trough body and each of the following midpoints to the front side surface can all be understood as the minimum distance.

[0185] The second inflection point (and the third inflection point described below) can be understood as a position where the extension trajectory of the second slot body changes.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] The sixth distance may be greater than or equal to 17 mm and less than or equal to 21 mm.

[0191] A second midpoint is provided between the starting end of the second trough 120 and the second inflection point, and a second midpoint is provided between the second midpoint and the front side surface 312.

[0192] The ninth distance L9 is greater than or equal to 6 mm and less than or equal to 12 mm. The ninth distance L9 may be greater than or equal to 9 mm and less than or equal to 12 mm.

[0193] 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.

[0194] A third midpoint is provided between the second inflection point and the third inflection point. A tenth distance L10 is provided from the third midpoint to the front side surface 312 . The tenth distance L10 is greater than or equal to 12 mm and less than or equal to 20 mm.

[0195] The tenth distance L10 may be greater than or equal to 15 mm and less than or equal to 17 mm.

[0196] The third center is the length center between the second inflection point and the third inflection point.

[0197] A fourth midpoint is provided between the third inflection point and the terminal end of the second slot body 120 . 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.

[0198] The eleventh distance L11 may be greater than or equal to 18 mm and less than or equal to 21 mm.

[0199] The fourth center is the length center between the third inflection point and the terminal end of the second slot body 120 .

[0200] 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.

[0201] Referring to FIG. 14 , regarding the movement path of the door body 310 :

[0202] 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.

[0203] Among them, the first track 131 and the third track 141 can be concentric arc tracks, and for details, please refer to the relevant content in the embodiments of the present application; 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.

[0204] As the door body 310 moves from the closed position to the first open angle, the first side edge 311 of the front side surface 312 of the door body 310 moves inward in 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 smooth opening and closing of the door body 310. The movement trajectory of the first side edge 311 can be referenced to trajectory line N1 in FIG. 14 .

[0205] The rear side surface 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 a first preset distance, and the first preset distance is less than or equal to 2 mm. If the first preset distance is less than or equal to 1 mm, the maximum distance that the third side edge of the door seal moves backward is 1 mm. Alternatively, if the first preset distance is equal to 0, the third side edge of the door seal will not move backward. The deformation amount of the door seal 320 caused by compression is small, which can ensure that the door seal 320 is smoothly separated from the box body 410 and prevent the door seal 320 from getting stuck with the box body 410. The movement trajectory of the third side edge 321 can refer to the trajectory line N3 in Figure 14.

[0206] 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.

[0207] 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°.

[0208] 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.

[0209] 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°.

[0210] When the door body 310 moves from a first preset angle to a second preset angle, the third side edge 321 moves forward and then backward. 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 separates from the front of the box body 410.

[0211] 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.

[0212] 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 and the fourth track 142 are separated from each other, 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. 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.

[0213] 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.

[0214] 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.

[0215] Regarding the case where the door body 310 is connected to the cabinet plate 330, the movement path of the cabinet plate 330 is:

[0216] In the closed door 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. The second side edge 331 of the cabinet panel 330 and the first side edge 311 of the door body 310 have different motion trajectories. The motion trajectory of the second side edge 331 can be seen in the trajectory line N2 in FIG14 .

[0217] 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.

[0218] 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. 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 3 mm to 4 mm away 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.

[0219] As 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 significant distance, and this distance does not increase with the opening angle of the door body 310. The door body 310 moves at a relatively low speed during this initial stage. 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.

[0220] The door body 310 is opened to a third preset angle, the third preset distance is the largest, the third preset angle is greater than or equal to 13 degrees and less than or equal to 18 degrees, and the third preset distance can be a maximum of 1 mm to 1.5 mm.

[0221] When the door body 310 is between the first opening angle and the third opening angle, the second side edge 331 moves outward in the left and right direction by a fourth preset distance relative to the initial position of the second side edge 331. 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.

[0222] 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.

[0223] Regarding the relationship between the trajectory of the first axis and the tangent of the trajectory of the second axis:

[0224] The angle between the tangent of the first track and the front side surface of the door body 300 is less than or equal to 45°, specifically it can be 45°, 40°, 30° or 25°, and the angle between the tangent of the first track and the front side surface of the door body 300 gradually decreases; the angle between the tangent of the second track and the front wall of the door body 300 is less than or equal to 20°, specifically it can be 20°, 15°, 13° or 12°, etc.

[0225] The angle between the tangent line of the third track and the front side surface of the door body decreases gradually, and the angle between the tangent line of the fourth track and the front side surface of the door body decreases gradually.

[0226] An included angle between the tangent line of the third track and the tangent line of the fourth track and the front side surface of the door body is less than or equal to 65°.

[0227] During the opening process of the door body 300, the angle between the tangent line of the third track and the front side surface of the door body is less than or equal to 65°. For example, the angle between the tangent line of the third track and the front side surface of the door body can be 65° or less.

[0228] 60°, 55°, 50° or 45°, etc., the angle between the tangent of the fourth track and the front side of the door body is less than or equal to 45°. For example, the angle between the tangent of the fourth track and the front side of the door body 300 can be specifically 45°, 40°, 30°, 27°, 26° or 20°, etc.

[0229] The angle between the tangent of the fifth track at one end close to the fourth track and the front side surface of the door body is less than or equal to 30°, specifically 30°, 20°, 19° or 15°, etc. The angle between the tangent of the fifth track at the other end away from the fourth track and the front side surface of the door body is less than or equal to 10°, specifically 10°, 8°, 5° or 3°, etc. That is, at the end of the movement of the fifth track, the angle between the tangent of the fifth track and the front side surface of the door body decreases, that is, the second trough body 120 tends to tilt toward the first trough body 110, thereby reducing the spacing between the first trough body 110 and the second trough body 120, reducing the installation distance between the first trough body 110 and the second trough body 120 in the thickness direction of the door body 300, and meeting the installation requirements of the hinge after the door body 300 is thinned.

[0230] About the angle between the first trajectory and the third trajectory:

[0231] The angle between the tangent of the first trajectory and the tangent of the third trajectory gradually increases.

[0232] The angle between the tangent of the first track and the tangent of the third track is greater than or equal to 10° and less than or equal to 50°. Specifically, it can be 15°, 20°, 25°, 35°, or 45°. Furthermore, the angle between the tangent of the first track 131 and the tangent of the third track 141 is greater than or equal to 20° and less than or equal to 40°.

[0233] About the angle between the second trajectory and the fourth trajectory:

[0234] The angle between the tangent line of the second track and the tangent line of the fourth track first increases and then decreases.

[0235] The angle between the tangent of the second track and the tangent of the fourth track is greater than or equal to 20° and less than or equal to 60°, and can be 25°, 30°, 35°, 45° or 55°, etc. For example, the angle is greater than or equal to 20° and less than or equal to 40°.

[0236] About the angle between the second trajectory and the fifth trajectory:

[0237] The angle between the tangent of the second track and the tangent of the starting end of the fifth track is greater than or equal to 20° and less than or equal to 60°, and can specifically be 25°, 30°, 35°, 45°, or 55°. The angle between the tangent of the second track and the tangent of the ending end of the fifth track is less than or equal to 10°, and can specifically be 9°, 8°, 6°, 5°, 1°, or even 0°.

[0238] About the angle between the center line of the first and second axis and the front side:

[0239] During the opening process of the door body 300 , the angle between the axis connecting the first shaft body 210 and the second shaft body 220 and the front side surface of the door body 300 first gradually decreases and then gradually increases.

[0240] During the first opening angle, the angle between the axis connecting the first and second axis bodies 210, 220 and the front side surface of the door body 300 first decreases to 0° and then gradually increases. During the first opening angle, the angle between the axis connecting the first and second axis bodies 210, 220 and the front side surface of the door body 300 is less than or equal to 20°, and can specifically be 20°, 19°, 17°, 15°, or 10°.

[0241] During the second opening angle, the angle between the axis connecting the first axis 210 and the second axis 220 and the front side of the door body 300 is less than or equal to 45°, specifically, it can be 45°, 40°, 35°, 30° or 20°.

[0242] During the third opening angle, the angle between the axis connecting the first shaft 210 and the second shaft 220 and the front side of the door body 300 is greater than or equal to 90°, specifically 90°, 95°, 100° or 105°.

[0243] An embodiment of the second aspect of the present application provides a door assembly, including a door body 310 and a hinge assembly as described above, wherein the door body 310 is provided with one of a first hinge 100 and a second hinge 200 .

[0244] The thickness of the door body 310 is greater than or equal to 15 mm and less than or equal to 35 mm, realizing an ultra-thin door body.

[0245] When the door body 310 is connected to the cabinet panel 330 , an embedded device can be installed.

[0246] The door assembly can be installed on a box 410 with a storage function, as well as other electrical equipment, to achieve the installation of embedded equipment.

[0247] An embodiment of the third aspect of the present application, with reference to Figures 1 and 3, provides a refrigeration device 400, including a box body 410, a door body 310 and a hinge assembly as described above, the door body 310 is provided with one of the first hinge 100 and the second hinge 200, the box body 410 is provided with the other of the first hinge 100 and the second hinge 200, and the box body 410 and the door body 310 are hinged via the first hinge 100 and the second hinge 200.

[0248] 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.

[0249] In conjunction with the above, an embodiment of the present application is 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.

[0250] Referring to Figures 1 to 5, the first groove body 110 includes a first groove portion 111 and a second groove portion 112 that are connected to each other, the first groove portion 111 is an arc groove, and the second groove portion 112 is a straight groove, and the second groove body 120 includes a third groove portion 121, a fourth groove portion 122 and a fifth groove portion 123, the third groove portion 121 is an arc groove, the fourth groove portion 122 is an elliptical groove, and the fifth groove portion 123 is an arc groove.

[0251] 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.

[0252] 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 0 to 25° with a fixed center, moves in an elliptical arc at about 25° to 70°, and rotates around 30° with a fixed center; and the entire movement trajectory is on the right side of the initial point.

[0253] 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.

[0254] 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.

[0255] The refrigeration device 400 of the present embodiment solves the problem of the door opening of the embedded refrigeration device 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 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.

[0256] 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.

[0257] 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.

[0258] 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°.

[0259] 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 L2, and the second distance L2 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.

[0260] 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.

[0261] Finally, it should be noted that the above embodiments are intended only to illustrate the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application and are intended to be encompassed by the claims of the present application.

Claims

1. A door assembly comprising: A door body, wherein a hinged side of the door body is provided with a first slot for inserting a first shaft body and a second slot for inserting a second shaft body, the first slot is located in front of the second slot, the door body is provided with a vertical front side surface and a first side wall, the first side wall is provided on the hinged side of the door body; the first slot includes at least one of an arc track and a straight track; Along the starting end to the ending end of the second groove body, the second groove body is away from the front side surface and close to the first side wall. The third distance from the starting end of the second groove body to the front side surface of the door body is greater than or equal to 1 mm and less than or equal to 4 mm. The seventh distance from the ending end of the second groove body to the front side surface of the door body is greater than or equal to 15 mm and less than or equal to 27 mm.

2. The door assembly according to claim 1, wherein The second groove body includes a third track and a fourth track, the third track and the fourth track are connected at a second inflection point, a fourth distance L4 from the second inflection point of the second groove body to the front side surface, the fourth distance L4 is greater than or equal to 10 mm and less than or equal to 15 mm, the second axis is located at the second inflection point, the door body is opened to a first opening angle, the first opening angle is greater than or equal to 10° and less than or equal to 50°.

3. The door assembly according to claim 2, wherein: The midpoint of the third trajectory is the second midpoint, and a ninth distance L9 from the second midpoint to the front side surface is greater than or equal to 6 mm and less than or equal to 12 mm.

4. The door assembly according to claim 2, wherein: The midpoint of the fourth trajectory is the third midpoint, and a tenth distance L10 from the third midpoint to the front side surface is greater than or equal to 12 mm and less than or equal to 20 mm.

5. The door assembly according to claim 2, wherein: The third trajectory is an arc trajectory, and the fourth trajectory is an elliptical trajectory.

6. The door assembly according to claim 2, wherein: The second groove body includes a fifth track, the fifth track is connected to the fourth track at a third inflection point, the third inflection point of the second groove body is connected to the front side surface by a sixth distance L6, the sixth distance L6 is greater than or equal to 15 mm and less than or equal to 25 mm, the second axis is located at the third inflection point, the door body is opened to a second opening angle, the second opening angle is greater than or equal to 60° and less than or equal to 95°.

7. The door assembly according to claim 6, wherein: The midpoint of the fifth track is a fourth midpoint, and an eleventh distance L11 from the fourth midpoint to the front side surface is greater than or equal to 15 mm and less than or equal to 25 mm.

8. The door assembly according to claim 6, wherein: The fifth trajectory is an arc trajectory.

9. The door assembly according to any one of claims 2 to 8, wherein: The angle between the tangent of the third track and the front side of the door body decreases, and the angle between the switch of the fourth track and the front side of the door body decreases.

10. The door assembly according to claim 9, wherein: The angle between the tangent line of the third trajectory and the front side surface of the door body is less than or equal to 65°; And / or, the angle between the tangent of the fourth trajectory and the front side surface of the door body is less than or equal to 45°.

11. The door assembly according to any one of claims 6 to 8, wherein: An angle between a tangent line of the fifth track and the front side surface of the door body is less than or equal to 30°.

12. A refrigeration device comprising a box body and the door assembly according to any one of claims 1 to 11, wherein the box body is provided with a first shaft and a second shaft so that the box body and the door body are hinged.

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