Door assembly and refrigeration equipment

Abstract

The invention relates to the technical field of hinges, and provides a door assembly and refrigeration equipment, the door assembly comprises a first hinge piece, a second hinge piece and a door body, and the first hinge piece is provided with a first groove body and a second groove body; the second hinge piece is provided with a first shaft body and a second shaft body, and one of the first hinge piece and the second hinge piece is fixed to the door body. The first shaft body moves along a first track relative to the first groove body, the second shaft body moves along a third track relative to the second groove body, the first track and the third track are arc tracks, and a first side edge of the front side face of the door body moves inwards in the left-right direction relative to the initial position of the first side edge. The backward movement distance of the third side edge of the door seal of the door body relative to the initial position of the third side edge is smaller than or equal to 2 mm. According to the door assembly, the backward moving distance of the door seal is reduced, it is guaranteed that the door seal can be smoothly separated from the box body, it is guaranteed that the first side edge of the door body does not move outwards, and interference between the first side edge and an adjacent environment structure is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hinges, and in particular to door assemblies and refrigeration equipment. Background Art

[0002] 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.

[0003] Related technologies that prevent interference between the door and the wall, built-in cabinets, or electrical components often require a thick door, making it difficult to meet the thickness requirements of built-in doors that require cabinet panels. In some cases, the door seal is squeezed between the door and the cabinet during opening, creating significant resistance from the cabinet, which can affect the door opening experience and requires further optimization. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides a door assembly in which both a first axis and a second axis move in a circular arc trajectory to open the door. This can reduce the distance the door seal moves backward, ensuring that the door seal can be smoothly separated from the box body. It can also ensure that the first side edge of the door body does not move outward, avoiding interference between the first side edge of the door body and adjacent environmental structures.

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

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

[0007] A first hinged member is provided with a first slot body and a second slot body;

[0008] The second hinge is provided with a first shaft body and a second shaft body, wherein the first shaft body is inserted into the first groove body, and the second shaft body is inserted into the second groove body;

[0009] a door body, wherein one of the first hinge member and the second hinge member is fixed to a hinge side of the door body;

[0010] The door body moves from a closed position to a first opening angle, the first shaft moves along a first trajectory relative to the first groove body, and the second shaft moves along a third trajectory relative to the second groove body, the first trajectory and the third trajectory are both circular arc trajectories, the first side edge of the front side surface of the door body moves inward relative to the initial position of the first side edge, and the rear side surface of the door seal of the door body is provided with a third side edge, and the distance that the third side edge moves backward relative to the initial position of the third side edge is less than a first preset distance, and the first preset distance is less than or equal to 2 mm.

[0011] According to the door assembly of the embodiment of the present invention, from the closed position to the first opening angle, that is, from the beginning of opening the door to the first opening angle, the first axis and the second axis both move along a circular arc trajectory, which can ensure that the first side edge of the door body always moves inward, avoiding interference between the first side edge of the door body and the adjacent environmental structure, and is suitable for environments with high installation precision. The distance that the third side edge of the door seal moves backward is less than or equal to 2 mm, which reduces the squeezing of the door seal by the door body and the box body, avoids jamming between the door seal and the box body, and ensures that the door body can be opened and closed smoothly.

[0012] According to one embodiment of the present invention, between the door closing position and the first opening angle, the third side edge first moves backward, then forward, then backward, and then forward, and the first opening angle is greater than or equal to 20° and less than or equal to 50°.

[0013] According to one embodiment of the present invention, the third side edge moves backward from the door closing position to a first preset angle, and the first preset angle is less than or equal to 10°.

[0014] According to one embodiment of the present invention, the third side edge moves forward and then backward from the first preset angle to the second preset angle, and the second preset angle is greater than 10° and less than or equal to 16°.

[0015] According to one embodiment of the present invention, the door body opens from the first opening angle to the second opening angle, the first axis moves along the second trajectory in the first slot body, the second axis moves along the fourth trajectory in the second slot body, the second trajectory is away from the fourth trajectory, the third side edge moves forward a second preset distance, the second preset distance is greater than or equal to 2 mm and less than or equal to 25 mm, and the second opening angle is greater than or equal to 60° and less than or equal to 95°.

[0016] According to one embodiment of the present invention, the door body opens from the second opening angle to a third opening angle, the second shaft rotates around the first shaft, and the third opening angle is greater than or equal to 100° and less than or equal to 130°.

[0017] According to one embodiment of the present invention, the door body is connected to a cabinet panel, and a second side edge is provided on the hinged side of the front wall of the cabinet panel. The second side edge is located on the outside and front side of the first side edge. From the closed position to the first opening angle, the second side edge moves outward a third preset distance relative to the initial position of the second side edge, and the third preset distance is less than or equal to 1.5 mm.

[0018] According to one embodiment of the present invention, when the door body moves from the closed position to the first opening angle, the third preset distance first increases and then decreases.

[0019] According to one embodiment of the present invention, the door body is opened to a third preset angle, the third preset distance is the largest, and the third preset angle is greater than or equal to 13° and less than or equal to 18°.

[0020] According to one embodiment of the present invention, when the door body is between the first opening angle and the third opening angle, the second side edge moves outward by a fourth preset distance relative to the initial position of the second side edge, and the fourth preset distance is less than or equal to 1 mm, wherein the third opening angle is greater than the first opening angle.

[0021] According to one embodiment of the present invention, the thickness of the door body is greater than or equal to 15 mm and less than or equal to 35 mm, and the thickness of the cabinet panel is greater than or equal to 5 mm and less than or equal to 25 mm.

[0022] A refrigeration device according to a second embodiment of the present invention includes a cabinet and the door assembly as described above, wherein the cabinet is provided with the other of the first hinge and the second hinge so that the cabinet is hinged to the door body.

[0023] According to the refrigeration device of the embodiment of the present invention, the thickness of the door body of the refrigeration device is reduced, so that opening the door is more labor-saving, and the refrigeration device is suitable for embedded installation.

[0024] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1This is a schematic diagram of the three-dimensional structure of a hinge assembly provided by an embodiment of the present invention installed in a refrigeration device;

[0027] Figure 2 yes Figure 1 Schematic diagram of the partially enlarged structure of part A in the middle;

[0028] Figure 3 This is a schematic top view of the structure of a hinge assembly provided by an embodiment of the present invention installed in a refrigeration device;

[0029] Figure 4 yes Figure 3 A schematic diagram of the partially enlarged structure of part B in the middle;

[0030] Figure 5 1 is a structural diagram of the first hinge and the second hinge of the hinge assembly provided by an embodiment of the present invention in an installed state;

[0031] Figure 6 1 is a schematic structural diagram of a hinge assembly provided by an embodiment of the present invention in an initial position; at this time, the door body is in a closed position; the dotted lines perpendicular to the track in the figure indicate the separation positions of the various grooves;

[0032] Figure 7 2 is a schematic structural diagram of a hinge assembly provided by an embodiment of the present invention at a first opening angle. The figure takes the first opening angle of 25° as an example. At this time, the door body is opened 25° relative to the box body.

[0033] Figure 8 2 is a schematic structural diagram of a hinge assembly provided by an embodiment of the present invention at a second opening angle. The figure takes the second opening angle of 70° as an example. At this time, the door body is opened 70° relative to the box body.

[0034] Figure 9 2 is a schematic structural diagram of a hinge assembly provided by an embodiment of the present invention at a third opening angle. The figure takes the third opening angle of 100° as an example. At this time, the door body is opened 100° relative to the box body.

[0035] Figure 10 is a schematic diagram of the distances from the first track and the second track to the front side of the hinge assembly provided by an embodiment of the present invention;

[0036] Figure 11 Schematic diagram of the distances from the third track, the fourth track, and the fifth track of the hinge assembly provided by an embodiment of the present invention to the front side surface;

[0037] Figure 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 by an embodiment of the present invention;

[0038] Figure 13is a schematic diagram of the distance from the wall surface to the front side surface of the second groove body of the hinge assembly provided by an embodiment of the present invention;

[0039] Figure 14 2 is a schematic diagram of the structure of a hinge assembly provided by an embodiment of the present invention installed on a refrigeration device. In the figure, the dotted line N1 illustrates the trajectory of the first side edge, the dotted line N2 illustrates the trajectory of the second side edge, and the dotted line N3 illustrates the trajectory of the third side edge.

[0040] Reference numerals:

[0041] 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;

[0042] 200, second hinge; 210, first shaft; 220, second shaft;

[0043] 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;

[0044] 400. Refrigeration equipment; 410. Box; 500. Environmental structure. DETAILED DESCRIPTION

[0045] 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.

[0046] In the description of the embodiments of the present invention, 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 invention 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 should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0047] In the description of the embodiments of the present invention, 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; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0048] In the embodiments of the present invention, 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," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0049] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 embodiment of the present invention. 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 features of different embodiments or examples without contradiction.

[0050] 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. Hinge assemblies capable of adjusting the door body's movement path are relatively long in the thickness direction of the door body, making them difficult to adapt to thinner door bodies and limiting their application scenarios. To address the aforementioned issues, a hinge assembly according to an embodiment of the present invention 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.

[0051] Before describing the hinge assembly of the embodiment of the present invention, the application scenarios of the hinge assembly of the embodiment of the present invention are described. However, the application scenarios of the hinge assembly of the embodiment of the present invention are not limited to the enumerated application scenarios.

[0052] refer to Figures 1 to 4 As shown, the hinge assembly of the embodiment of the present invention can be applied to a door body 310 that is openable and closed and connected to a box body 410, and the user can directly observe the front side 312 of the door body 310; it can also be applied to a door body 310 that is embedded in an installation, and the front side 312 of the door body 310 is connected to a cabinet panel 330, and the user can directly observe the front wall 332 of the cabinet panel 330, and the front side 312 of the door body 310 is covered by the front wall 332 of the cabinet panel 330. When the door body 310 is not equipped with a cabinet panel 330, it is necessary to ensure that the side edges of the door body 310 will not interfere with the adjacent environmental structure 500; when the door body 310 is equipped with a cabinet panel 330, it is necessary to ensure that both the side edges of the door body 310 and the side edges of the cabinet panel 330 will not interfere with the adjacent environmental structure 500; regardless of whether the door body 310 is equipped with a cabinet panel 330, when a door seal 320 is provided on the rear side of the door body 310, it is necessary to ensure that the door seal 320 can be stably separated from the box body 410 to avoid the door seal 320 being stuck due to the squeezing force of the door body 310 and the box body 410.

[0053] 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.

[0054] 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.

[0055] 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 side 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 opened and closed smoothly. As above, the third side edge 321 can be the intersection of the rear side 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 side surface and the third side wall (the third side edge 321 can switch between multiple longitudinal edges).

[0056] The embodiment of the first aspect of the present invention, referring to Figures 5 to 9 As shown, a hinge assembly is provided, 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.

[0057] 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.

[0058] 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).

[0059] refer to Figure 5 and Figure 6 As shown, 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 in the third slot portion 121. In this case, 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 .

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] It can be understood that the first hinge 100 and the second hinge 200 switch between an initial position and an open position, the initial position corresponds to the door body 310 being in a closed state, and the open position corresponds to the door body 310 being open relative to the box body 410, and all opening angles can be understood as open positions. An example of measuring the opening angle: Taking the front side surface 312 of the door body 310 in the initial position as the reference plane, the angle between the front side surface 312 of the door body 310 in the current position and the reference plane can be understood as the opening angle. Regarding the open position, the open position is one or more positions where the door body 310 is open relative to the box body 410. The angle at which the first hinge 100 and the second hinge 200 are opened is not limited, and the open position includes multiple opening angles.

[0065] refer to Figure 6 As shown, in the initial position, the first shaft body 210 is located at the end of the first groove portion 111 away from the second groove portion 112, and the second shaft body 220 is located at the end of the third groove portion 121 away from the fourth groove portion 122. It can also be understood that the first shaft body 210 is located at the starting end of the first groove body 110, and the second shaft body 220 is located at the starting end of the second groove body 120; between the initial position and the open position, the first shaft body 210 moves in the first groove body 110, and the second shaft body 220 moves in the second groove body 120.

[0066] refer to Figure 7 and Figure 8As shown, in the open position, the first shaft 210 is located in the first slot 111 and the second shaft 220 is located in the third slot 121, or the first shaft 210 is located in the second slot 112 and the second shaft 220 is located in the fourth slot 122. When the first shaft 210 is located in the first slot 111 and the second shaft 220 is located in the third slot 121, the first hinge 100 and the second hinge 200 are between the initial position and the first opening angle. When the first shaft 210 is located in the second slot 112 and the second shaft 220 is located in the fourth slot 122, the first hinge 100 and the second hinge 200 move between the first opening angle and the second opening angle. The positions of the first shaft 210 and the second shaft 220 correspond to each other. The first opening angle is greater than 0° and less than the second opening angle. In some cases, the range of the opening angle can be greater than 0° and less than or equal to 130°. Correspondingly, the second opening angle is less than or equal to 130°. The hinge assembly is applied between the door body 310 and the box body 410, and the opening angle of the door body 310 can reach 130°.

[0067] 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.

[0068] In the hinge assembly of the embodiment of the present invention, the first shaft 210 moves in the first groove body 110, and the second shaft 220 moves in the second groove body 120 to realize the opening and closing of the door body 310; the trajectory of the first groove body 110 and the trajectory of the second groove body 120 cooperate to reduce the maximum distance between the first groove body 110 and the second groove body 120. When one of the first hinge 100 and the second hinge 200 is installed on the door body 310, the length of the first hinge 100 in the front-to-back direction can be reduced, which is suitable for the door body 310 with a smaller thickness. It can also reduce the distance that the first side edge 311 of the door body 310 moves outward, thereby avoiding interference between the first side edge 311 of the door body 310 and the adjacent environmental structure 500.

[0069] 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.

[0070] It should also be noted that the hinge assembly of the embodiment of the present invention has the same principle of opening and closing the door as the first hinge 100 or the second hinge 200 installed on the door body 310. Combined with the drawings and the following embodiments, the first hinge 100 is installed on the door body 310 and the second hinge 200 is installed on the box body 410 as an example for explanation.

[0071] An embodiment of the motion trajectory of the first shaft 210 and the second shaft 220:

[0072] refer to Figure 6 As shown, 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.

[0073] 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.

[0074] refer to Figure 7 and Figure 8As shown, in the open position, between the first opening angle and the second opening angle, the first shaft body 210 moves along the second trajectory 132, and the second shaft body 220 moves along the fourth trajectory 142. The fourth trajectory 142 is a first elliptical trajectory. 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 body 210 can move along the guide direction of the second groove portion 112, and the second shaft body 220 can move along the guide direction of the fourth groove portion 122. In addition, the difference in distance between the second groove portion 112 and the fourth groove portion 122 and the front side surface 312 of the door body 310 increases in the direction away from the first groove portion 111. It should be noted that during the door opening process, the first shaft body 210 and the second shaft body 220 first rotate concentrically. After completing the concentric rotation, the second shaft body 220 moves along the first elliptical trajectory and the first shaft body 210 moves within the second groove portion 112.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] It is understood that, in the left-right direction of the door body 310, from the starting end to the ending end of the first trough body 110, the first trough body 110 extends toward the first side wall 313, and from the starting end to the ending end of the second trough body 120, the second trough body 120 extends toward the first side wall 313. In combination with the above, in the thickness direction of the door body 310, from the starting end to the ending end of the second trough body 120, the second trough body 120 extends from the front side to the rear side of the door body 310, and the extension path of the first trough body 110 in the thickness direction of the door body 310 is not limited.

[0079] It can be understood that, in combination with the above-mentioned first track 131, second track 132, third track 141, and fourth track 142, the distance from the first set position in the first trough body 110 and the second trough body 120 to the front side 312 of the door body 310 is the smallest, and the distance from the second set position in the first trough body 110 and the second trough body 120 to the front side 312 of the door body 310 is the largest, and the difference in distance from the first set position to the front side 312 of the door body 310 between the first set position and the second set position is greater than or equal to 13 mm and less than or equal to 33 mm. The first set position can be a point in the first trough body 110 or the second trough body 120, and the second set position can also be a point in the first trough body 110 or the second trough body 120.

[0080] It is understood that, in the front-to-back direction of the hinge assembly, the distance from the frontmost end to the rearmost end of the second slot 120 is greater than or equal to 15 mm and less than or equal to 33 mm. In other words, both the first setting position and the second setting position are set at the second slot 120. The first setting position is set at the starting end of the second slot 120, and the second setting position is set at the ending end of the second slot 120.

[0081] The length of the first hinge 100 in the front-to-back direction of the door body 310 is greater than or equal to 15 mm and less than or equal to 35 mm, and the length of the door body 310 in the front-to-back direction (that is, the thickness of the door body 310) is greater than or equal to 15 mm and less than or equal to 35 mm, wherein the first hinge 100 is a component independent of the door body 310 or the first hinge 100 is integrally formed with the door body 310. The minimum distance from the first setting position to the front side 312 of the door body 310 is 1 mm to ensure the wall thickness of the groove body, and the minimum distance from the second setting position to the rear side of the door body 310 is 1 mm to ensure the wall thickness of the groove body. Using the hinge assembly of the embodiment of the present invention, the thickness of the door body 310 can be controlled to be greater than or equal to 15 mm and less than or equal to 35 mm, so as to provide an ultra-thin door body 310.

[0082] Regarding the first groove portion 111 and the third groove portion 121:

[0083] It is understood that the central angles of the first slot 111 and the third slot 121 are the same. That is, the first shaft 210 moves from the starting end of the first slot 111 to the ending end of the first slot 111, while the second shaft 220 moves from the starting end of the third slot 121 to the ending end of the fourth slot 122. The ending end of the first slot 111 is connected to the starting end of the second slot 112, and the ending end of the third slot 121 is connected to the starting end of the fourth slot 122. In other words, when the 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.

[0084] It is understandable that the second radius R2 is greater than the first radius R1 , and the third groove portion 121 is flatter than the first groove portion 111 , so that the second shaft body 220 can be driven to rotate concentrically through the first shaft body 210 .

[0085] 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.

[0086] It is understood that the first center Q1 is located on the preset reference plane 323, the first side of the preset reference plane 323, or the second side of the preset reference plane 323, where the first side is the inner side of the preset reference plane 323 and the second side is the outer side of the preset reference plane 323. When the first center Q1 is located on the preset reference plane 323 or the second side of the preset reference plane 323, the position of the first center Q1 is not limited and can be selected as needed.

[0087] It is understood that, since the first circle center is located on the second side of the preset reference plane 323, the distance from the first circle center Q1 to the preset reference plane 323 is less than the second threshold. The second threshold is set to be greater than or equal to 50 mm and less than or equal to 200 mm. Of course, the second threshold does not need to have an upper limit.

[0088] It is understandable that, based on the first center Q1 being located on the first side of the preset reference plane 323 , the distance from the first center Q1 to the preset reference plane 323 is less than a first threshold value, which is set to be less than or equal to 20 mm, such as less than or equal to 10 mm.

[0089] 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.

[0090] It can be understood that the first center of the circle is located on the front side of the door body 310, ensuring that from the starting end to the ending end, the first groove portion 111 and the third groove portion 121 both extend in the direction away from the front side surface 312 of the door body 310, and the first groove body 110 and the second groove body 120 both bend toward the front side of the door body 310.

[0091] It is understood that 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; 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.

[0092] It is understood that the angle at which the first hinge 100 and the second hinge 200 are opened is less than or equal to the first opening angle, and the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is less than or equal to 10 mm. This reduces the distance between the first slot 110 and the second slot 120, and the length of the first hinge 100 in the front-to-back direction, making it suitable for a door body 310 with a smaller thickness. In the open position, with the opening angle less than or equal to the first opening angle, the distance between the centerlines of the first shaft 210 and the second shaft 220 in the thickness direction is greater than or equal to 4 mm and less than or equal to 8 mm, such as 5 mm.

[0093] It is understood that, in the initial position, the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is less than 2.5 mm. This reduces the distance between the first slot 110 and the second slot 120, and the length of the first hinge 100 in the front-to-back direction, making it suitable for a door body 310 with a smaller thickness. In some cases, in the initial position, the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is greater than or equal to 1 mm and less than or equal to 2 mm, such as 1.5 mm.

[0094] Regarding the second groove portion 112 and the fourth groove portion 122:

[0095] refer to Figure 7 and Figure 8 As shown, it can be understood that the second groove portion 112 extends along a straight line, or the second groove portion 112 extends along a second ellipse; that is, the second trajectory 132 is a straight line or a trajectory extending along the second ellipse. When the second groove portion 112 extends along a straight line, the structure is simple; when the second groove portion 112 extends along the second ellipse, the first shaft 210 and the second shaft 220 can move smoothly.

[0096] 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.

[0097] It is understood that the first shaft 210 travels a first length within the second groove 112, and the second shaft 220 travels a second length within the fourth groove 122, where the second length is greater than the first length. In other words, the length of the fourth track 142 is greater than the length of the second track 132, ensuring smooth door opening and closing.

[0098] It can be understood that the first shaft 210 is located in the second groove 112 and the second shaft 220 is located in the fourth groove 122, that is, the opening angle of the first hinge 100 and the second hinge 200 is greater than the first opening angle and less than or equal to the second opening angle, and the distance between the center line of the first shaft 210 and the center line of the second shaft 220 in the front-to-back direction is less than or equal to 10 mm, so as to reduce the distance between the front end and the rear end of the first groove 110 and the second groove 120, and reduce the length of the first hinge 100 in the front-to-back direction, which is suitable for door bodies 310 with smaller thickness.

[0099] 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:

[0100] x=M / sin(θ)*cos(90°-a-θ)-R*sin(a), y=M / sin(θ)*sin(90°-a-θ)

[0101] 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.

[0102] Regarding the second tank 120:

[0103] Understandably, the reference Figure 8 and Figure 9 As shown, 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 away 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 circle center Q2 with 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.

[0104] 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.

[0105] It is understandable that, based on the movement of the second shaft 220 along the fifth trajectory 143 , the first shaft 210 rotates around a fixed axis in the first slot 110 . The movement of the first shaft 210 is simple and the structure of the first slot 110 is simple.

[0106] It can be understood that the second center Q2 is located on the center line of the first groove body 110, that is, the second center Q2 is on the center line of the first shaft body 210, and the second shaft body 220 rotates around the first shaft body 210. At this time, the position of the first shaft body 210 in the first groove body 110 is not limited, such as the first shaft body 210 is located at the terminal end of the first groove body 110, the first shaft body 210 is located at the terminal end of the second groove portion 112, or before the terminal end of the second groove portion 112.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] It can be understood that when the first slot body 110 includes the first slot portion 111 and the second slot portion 112 and the second slot body 120 is provided with the fifth slot portion 123, in the open position, the second axis body 220 can be located in the fifth slot portion 123 and the first axis body 210 is located in the second slot portion 112, which can simplify the structure of the first slot portion 111 and increase the opening angle of the door body 310.

[0111] It is understood that the angle at which the first hinge 100 and the second hinge 200 are opened is greater than the second opening angle and less than or equal to the third opening angle, and the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is less than or equal to 20 mm. This reduces the length of the first hinge 100 in the front-to-back direction and is therefore suitable for use with a door body 310 having a smaller thickness. In the open position, with the opening angle greater than the second opening angle and less than or equal to the third opening angle, the distance between the centerlines of the first shaft 210 and the second shaft 220 in the front-to-back direction is greater than or equal to 12 mm and less than or equal to 17 mm, such as 13 mm.

[0112] Regarding the first tank body 110 and the second tank body 120:

[0113] It can be understood that the connection between the first groove portion 111 and the second groove portion 112 is tangent. The first groove portion 111 and the second groove portion 112 can be directly connected or connected through a first transition section. The first transition section makes the first groove portion 111 and the second groove portion 112 transition tangentially, ensuring a smooth transition between the first groove portion 111 and the second groove portion 112. The first shaft body 210 moves smoothly between the first groove portion 111 and the second groove portion 112, avoiding jamming during the movement of the first shaft body 210.

[0114] It is understood that the connection between the third groove portion 121 and the fourth groove portion 122 is tangent. The third groove portion 121 and the fourth groove portion 122 can be directly connected or connected through a second transition section. The second transition section allows the third groove portion 121 and the fourth groove portion 122 to transition tangentially, ensuring a smooth transition between the third groove portion 121 and the fourth groove portion 122, allowing the second shaft 220 to move smoothly between the third groove portion 121 and the fourth groove portion 122, and avoiding jamming during the movement of the second shaft 220.

[0115] It is also understandable that the fourth slot portion 122 is tangent to the fifth slot portion 123 at its connection. The fourth slot portion 122 and the fifth slot portion 123 may be directly connected or connected via a third transition section. The third transition section allows the fourth slot portion 122 and the fifth slot portion 123 to transition tangentially, ensuring a smooth transition between the fourth slot portion 122 and the fifth slot portion 123. This allows the second shaft 220 to move smoothly between the fourth slot portion 122 and the fifth slot portion 123, thereby preventing any jamming during the movement of the second shaft 220.

[0116] It is understood that the diameter of the first shaft 210 is greater than the diameter of the second shaft 220. Accordingly, the width of the first trough 110 is greater than the width of the second trough 120, with the width being the length perpendicular to the centerline. With the first shaft 210 serving as the primary axis and the second shaft 220 serving as the secondary axis, the first shaft 210 performs the majority of the load-bearing function. By increasing the diameter of the first shaft 210, the structural strength of the first shaft 210 can be enhanced.

[0117] It is understood that the length of the first shaft 210 is greater than the length of the second shaft 220, and correspondingly, the depth of the first slot 110 is greater than the depth of the second slot 120. During installation, the first shaft 210 is first inserted into the bottom of the first slot 110, and the second shaft 220 is then inserted into the bottom of the second slot 120. The first shaft 210 is first positioned with the first slot 110, and then the second shaft 220 is positioned with the second slot 120. The design of different axial lengths simplifies the positioning and installation of the first hinge 100 and the second hinge.

[0118] Understandably, the reference Figure 6 As shown, a first avoidance groove portion 114 is provided at the starting end of the first slot body 110, a second avoidance groove portion 124 is provided at the starting end of the second slot 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.

[0119] 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.

[0120] About opening angle:

[0121] It is understood that in the open position, the angle between the first hinge 100 and the second hinge 200 is less than or equal to the first opening angle, which is greater than or equal to 10° and less than or equal to 50°. At this time, the first shaft 210 is located in the first groove 111 and the second shaft 220 is located in the third groove 121. The first opening angle can be set to 20° to 30°, such as 25°. Figure 6 and Figure 7 A transition from an initial position to a first opening angle is illustrated.

[0122] It can be understood that when the door body 310 moves from the closed position to the first opening angle of the open position, the first shaft 210 moves along the first track 131 to the starting end of the second track 132 and the second shaft 220 moves along the third track 141 to the starting end of the fourth track 142.

[0123] It is understood that the opening angle of the first hinge 100 and the second hinge 200 is greater than the first opening angle and less than or equal to the second opening angle, and the second opening angle is greater than or equal to 60 degrees and less than or equal to 95 degrees. At this time, the first shaft 210 is located in the second groove 112 and the second shaft 220 is located in the fourth groove 122. The second opening angle can be 65 degrees to 75 degrees, such as 70 degrees. Figure 7 and Figure 8 A transition from a first opening angle to a second opening angle is illustrated.

[0124] It can be understood that when the door body 310 moves from the first opening angle to the second opening angle in the open position, the first shaft body 210 moves along the second track 132 toward the terminal end away from the first track 131 and the second shaft body 220 moves along the fourth track 142 toward the terminal end away from the third track 141.

[0125] It can be understood that, based on the second slot 120 including the fifth slot portion 123, the opening angle between the first hinge 100 and the second hinge 200 is greater than the second opening angle and less than or equal to the third opening angle, and the third opening angle is greater than or equal to 100° and less than or equal to 130°. At this time, the second shaft 220 is located in the fifth slot portion 123 and the first shaft 210 is located in the second slot portion 112. The third opening angle can be 100° to 110°, such as 105°. Figure 8 and Figure 9 A transition from the second opening angle to the third opening angle is illustrated.

[0126] It can be understood that, based on the fact that the second slot body 120 includes the fifth slot portion 123, during the process of the door body 310 moving 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.

[0127] It will be appreciated that the second shaft 220 moves along the fifth trajectory 143, which is an arc around the centerline of the first shaft 210 with a third radius R3, where the third radius R3 is equal to the distance between the centerline of the first shaft 210 and the centerline of the second shaft 220. The fifth trajectory 143 cooperates with the first shaft 210 to reduce the distance between the fifth trajectory 143 and the front side 312 of the door body 310, thereby reducing the length of the first hinge 100 in the front-to-back direction and, consequently, the thickness of the door body 310.

[0128] 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 .

[0129] It is understood that the third radius is greater than or equal to 10 mm and less than or equal to 30 mm. By controlling the third radius, the fifth track 143 extends a shorter distance backward, which helps to reduce the thickness of the door body 310.

[0130] 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.

[0131] 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.

[0132] 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°.

[0133] 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.

[0134] Regarding the distances between the first shaft 210 and the second shaft 220 and the front side 312 of the door body 310:

[0135] 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.

[0136] Among them, the first track 131 and the third track 141 can be concentric arc tracks. For details, please refer to the relevant content in the embodiments of the present invention; however, the first track 131 and the third track 141 are not limited to concentric arc tracks. The center positions of the first track 131 and the third track 141 need to ensure smooth door opening. For example, the distance between the center of the first track 131 and the center of the second track 132 is less than a preset value, so that the first track 131 and the second track 132 are close to concentric arc tracks.

[0137] The following content, reference Figure 10 and Figure 11 As shown, the description is based on the dynamic trajectory of the first shaft 210 and the second shaft 220. It should be noted that, Figure 10 and Figure 11 The first track, the second track, the third track, the fourth track and the fifth track in the method may extend along the above-mentioned tracks, but are not limited to the above-mentioned tracks. Figure 10 and Figure 11 The dynamic trajectories of the first and second axis bodies are reflected through the distance parameter.

[0138] refer to Figure 10 As shown, 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, where 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, and 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 which point the front end of the first trough 110 is coplanar with the front side 312.

[0139] 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.

[0140] refer to Figure 11 As shown, on 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 slot 120 is coplanar with the front side 312.

[0141] 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.

[0142] The difference between the first distance a1 and the third distance a3 can be understood as the aforementioned first distance l1.

[0143] It is understood that at the midpoint of the first trajectory 131, the distance a8 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 10 mm. For example, at the midpoint of the first trajectory 131, the distance a8 from the center of the first shaft 210 to the front side surface 312 is greater than or equal to 8 mm and less than or equal to 9 mm.

[0144] The midpoint of the first track 131 can be understood as half the arc length of the first track 131 .

[0145] It is understood that 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.

[0146] The midpoint of the third track 141 can be understood as half the arc length of the third track 141 .

[0147] 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.

[0148] 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.

[0149] refer to Figure 10 As shown, along the second trajectory 132, the distance from the center of the first shaft 210 to the front side 312 decreases from the second distance a2 to a fifth distance a5, where the fifth distance a5 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 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 9 mm.

[0150] 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.

[0151] 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.

[0152] refer to Figure 11 As shown, in the fourth trajectory 142, the distance from the center of the second shaft 220 to the front side 312 increases from the fourth distance a4 to the sixth distance a6, and 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 from the center of the second shaft 220 to the front side 312 is greater than or equal to 16 mm and less than or equal to 20 mm.

[0153] 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.

[0154] It can be understood that the movement trajectory of the second shaft 220 is continuously moving away from the front side surface 312 .

[0155] 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.

[0156] 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.

[0157] refer to Figure 11 As shown, in the fifth track 143 , the distance from the center of the second shaft 220 to the front side surface 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 27 mm.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] The following content, reference Figure 12 and Figure 13 As shown, the static trajectory of the first tank body 110 and the second tank body 120 is described. It should be noted that, Figure 12 and Figure 13 The first trough body and the second trough body in the embodiment may extend along the above-mentioned trajectory, but are not limited to the above-mentioned trajectory. Figure 12 and Figure 13 The positional relationship between the first slot body and the second slot body is reflected by the distance parameter.

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

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

[0164] refer to Figure 12 As shown, regarding the first tank 110:

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

[0166] A first distance L1 is defined between the starting end of the first trough 110 and the front side 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.

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

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

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

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

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

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

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

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

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

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

[0177] refer to Figure 13 As shown, regarding the second tank 120:

[0178] 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 .

[0179] 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.

[0180] The distance between the second slot 120 and the front side 312 of the door body 310 is also the minimum distance.

[0181] 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.

[0182] 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.

[0183] It can be understood that when the motion trajectory of the first shaft body 210 also includes the fifth trajectory 143, the sixth distance L6 from the third inflection point of the second groove body 120 to the front side surface 312, the sixth distance L6 is greater than or equal to 15 mm and less than or equal to 25 mm, and the third inflection point is located between the second inflection point and the terminal end of the second groove body 120.

[0184] 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.

[0185] The sixth distance may be greater than or equal to 17 mm and less than or equal to 21 mm.

[0186] It is understood that a second midpoint is provided between the starting end of the second groove body 120 and the second inflection point, and a ninth distance L9 is provided from the second midpoint to the front side surface 312. The ninth distance L9 is greater than or equal to 6 mm and less than or equal to 12 mm. The ninth distance L9 may be greater than or equal to 9 mm and less than or equal to 12 mm.

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

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

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

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

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

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

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

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

[0195] refer to Figure 14 As shown, regarding the movement path of the door body 310:

[0196] 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.

[0197] Among them, the first track 131 and the third track 141 can be concentric arc tracks. For details, please refer to the relevant content in the embodiments of the present invention; however, the first track 131 and the third track 141 are not limited to concentric arc tracks. The center positions of the first track 131 and the third track 141 need to ensure smooth door opening. For example, the distance between the center of the first track 131 and the center of the second track 132 is less than a preset value, so that the first track 131 and the second track 132 are close to concentric arc tracks.

[0198] The door body 310 moves from the closed position to the first open angle, and the first side edge 311 of the front side surface 312 of the door body 310 moves inward along the left-right direction relative to the initial position of the first side edge 311. The first side edge 311 of the door body 310 does not move outward, and the first side edge 311 of the door body 310 does not interfere with the adjacent environmental structure 500, thereby ensuring the smooth opening and closing of the door body 310. The movement trajectory of the first side edge 311 can be referred to Figure 14 Middle trajectory line N1.

[0199] 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 the first preset distance, and the first preset distance is less than or equal to 2mm. If the first preset distance is less than or equal to 1mm, the maximum distance that the third side edge of the door seal moves backward is 1mm, or the first preset distance is equal to 0, that is, the third side edge of the door seal will not move backward. The deformation amount of the door seal 320 being squeezed is small, which can ensure that the door seal 320 is smoothly separated from the box body 410, and avoid the door seal 320 and the box body 410 from getting stuck. The movement trajectory of the third side edge 321 can be referred to Figure 14 Middle trajectory line N3.

[0200] 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.

[0201] 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°.

[0202] It is understood that between the closed position and the first open angle, the third side edge 321 first moves backward, then forward, then backward again, and then forward again. The motion trajectory of the third side edge 321 is affected by the motion trajectories of the first shaft 210 and the second shaft 220. The third side edge 321 adjusts its position back and forth in the front-to-back direction to reduce the distance it moves backward and the degree to which it is squeezed.

[0203] It is understood that when the door body 310 moves from the closed position to the first preset angle, the third side edge 321 moves backward. When the first opening angle is greater than or equal to 20° and less than or equal to 50°, and the first preset angle is less than or equal to 10°, that is, when the opening angle of the door body 310 is less than or equal to the first preset angle, the third side edge 321 continues to move backward, and the door seal 320 withstands the squeezing force, ensuring that the door body 310 can open and close stably and smoothly. For example, the first preset angle is greater than or equal to 4° and less than or equal to 7°.

[0204] It is understood that when the door body 310 moves from the first preset angle to the second preset angle, the third side edge 321 moves forward and then backward, and the second preset angle is greater than 10° and less than or equal to 16°. Between the first and second preset angles, the third side edge 321 reciprocates in the front-to-back direction. When the door body 310 is opened to a range of 7° to 10°, the third side edge 321 moves forward. When the door body 310 is opened to a range of 10° to 13°, the third side edge 321 moves backward. Before the door body 310 moves to the first opening angle, the first side edge 311 is separated from the front of the box body 410.

[0205] 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.

[0206] It can be understood that when the door body 310 opens from the first opening angle to the second opening angle, the first axis 210 moves along the second track 132 in the first groove body 110, and the second axis 220 moves along the fourth track 142 in the second groove body 120. The second track 132 is away from the fourth track 142, and the third side edge 321 moves forward a second preset distance. The second preset distance is greater than or equal to 2 mm and less than or equal to 25 mm. 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.

[0207] 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.

[0208] It can be understood that when the door body 310 opens from the second opening angle to the third opening angle, the second axis 220 rotates around the first axis 210, the third opening angle is greater than or equal to 100° and less than or equal to 130°, the third side edge 321 continues to move forward, and the distance between the third side edge 321 and the front of the box body 410 can continue to increase, or it can increase to a maximum value and then decrease. At this time, the position of the third side edge 321 is not limited.

[0209] Regarding the case where the door body 310 is connected to the cabinet plate 330, the movement path of the cabinet plate 330 is:

[0210] In the closed position, the distance between the cabinet panel 330 and the adjacent environmental structure 500 is greater than the distance between the door body 310 and the adjacent environmental structure 500, and the movement trajectory of the second side edge 331 of the cabinet panel 330 is different from that of the first side edge 311 of the door body 310. Figure 14 Middle trajectory line N2.

[0211] 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.

[0212] It will be appreciated that, from the closed position to the first open angle, the second side edge 331 moves outward in the left-right direction by a third predetermined distance relative to the initial position of the second side edge 331, and the third predetermined distance is less than or equal to 1.5 mm. In the closed position, if the second side edge 331 of the cabinet panel 330 is spaced 3 mm to 4 mm from the adjacent environmental structure 500, the second side edge 331 of the cabinet panel 330 will not interfere with the adjacent environmental structure 500, making the cabinet panel 330 suitable for embedded installation.

[0213] It is understood that when the door body 310 moves from the closed position to the first opening angle, the third predetermined distance first increases and then decreases. In the initial stage of door opening, the second side edge 331 moves outward a greater distance, and this distance does not increase with the opening angle of the door body 310. During the initial stage of door opening, the movement speed of the door body 310 is relatively low. Even if the gap between the second side edge 331 and the adjacent environmental structure 500 is small, interference or collision due to factors such as door vibration will not occur, resulting in smoother opening of the door body 310.

[0214] It is understood that when the door body 310 is opened to the third preset angle, the third preset distance is the largest, the third preset angle is greater than or equal to 13° and less than or equal to 18°, and the third preset distance can be a maximum of 1 mm to 1.5 mm.

[0215] It can be understood that between the first opening angle and the third opening angle, the second side edge 331 of the door body 310 moves outward in the left and right direction by a fourth preset distance relative to the initial position of the second side edge 331, and the fourth preset distance is less than or equal to 1 mm, which can ensure that the door body 310 and the cabinet panel 330 are both opened smoothly.

[0216] 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.

[0217] Regarding the relationship between the trajectory of the first axis and the tangent of the trajectory of the second axis:

[0218] It can be understood that the angle between the tangent of the first trajectory and the front side surface of the door body 300 is less than or equal to 45°, and can be specifically 45°, 40°, 30° or 25°, and the angle between the tangent of the first trajectory and the front side surface of the door body 300 gradually decreases; the angle between the tangent of the second trajectory and the front wall of the door body 300 is less than or equal to 20°, and can be specifically 20°, 15°, 13° or 12°, etc.

[0219] It can be understood that the angle between the tangent line of the third track and the front side surface of the door body decreases, and the angle between the tangent line of the fourth track and the front side surface of the door body decreases.

[0220] 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°.

[0221] During the process of opening the door body 300, the angle between the tangent 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 of the third track and the front side surface of the door body can be specifically 65°, 60°, 55°, 50° or 45°, etc. The angle between the tangent of the fourth track and the front side surface 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 surface of the door body 300 can be specifically 45°, 40°, 30°, 27°, 26° or 20°, etc.

[0222] 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.

[0223] About the angle between the first trajectory and the third trajectory:

[0224] The angle between the tangent of the first trajectory and the tangent of the third trajectory gradually increases.

[0225] 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°.

[0226] About the angle between the second trajectory and the fourth trajectory:

[0227] The angle between the tangent line of the second track and the tangent line of the fourth track first increases and then decreases.

[0228] 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°.

[0229] About the angle between the second trajectory and the fifth trajectory:

[0230] 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°.

[0231] About the angle between the center line of the first and second axis and the front side:

[0232] 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.

[0233] 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°.

[0234] 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°.

[0235] 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°.

[0236] An embodiment of the second aspect of the present invention provides a door assembly, including a door body 310 and any one of the hinge assemblies described above, wherein the door body 310 is provided with one of the first hinge 100 and the second hinge 200 .

[0237] It can be understood that 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.

[0238] When the door body 310 is connected to the cabinet panel 330 , an embedded device can be installed.

[0239] 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.

[0240] The embodiment of the third aspect of the present invention, referring to Figure 1 and Figure 3 As shown, a refrigeration device 400 is provided, 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 through the first hinge 100 and the second hinge 200.

[0241] 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.

[0242] In conjunction with the above, an embodiment of the present invention will be described. A refrigeration device 400 includes a housing 410 and a door assembly. The housing 410 has a storage space therein, wherein the storage space has an opening. The door body 310 is used to open and close the opening. A hinge assembly is provided on the pivot side of the housing 410 and pivotally connects the housing 410 and the door body 310. The hinge assembly includes a first hinge 100 and a second hinge 200. The first hinge 100 is provided on one of the housing 410 and the door body 310, and the second hinge 200 is provided on the other. The second hinge is provided with at least a first shaft 210 and a second shaft 220. The first hinge 100 is provided with at least a first slot 110 and a second slot 120. The first shaft 210 is connected to the first slot 110 and can move along the guide direction of the first slot 110. The second shaft 220 is connected to the second slot 120 and can move along the second slot 120.

[0243] refer to Figures 1 to 5 As shown, 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.

[0244] 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.

[0245] During the above-mentioned movement of the hinge assembly, the first side edge 311 of the door body 310 is within a vertical distance of 3 mm in the left-right direction relative to the outer edge of the box body 410, and the entire movement trajectory of the first side edge 311 is a movement backward and inward relative to the initial point of the first side edge 311, and the first side edge 311 is a curved arc motion; more specifically, it rotates around a fixed circle at about 0 to 25°, moves in an elliptical arc at about 25° to 70°, and rotates around a fixed circle at the last 30°; and the entire movement trajectory is on the right side of the initial point.

[0246] 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.

[0247] 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.

[0248] The refrigeration appliance 400 of this embodiment of the present invention can solve the problem of the door opening of embedded refrigeration appliances 400 extending too far beyond the reference plane and colliding with adjacent cabinets. The door body 310 can be made thinner, and a cabinet panel 330 can be mounted on the front side of the door body 310. The hinge assembly described above can also be used in door assembly scenarios without a cabinet panel 330. In this scenario, the front side of the door assembly is flush with the front side of the adjacent cabinet.

[0249] 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.

[0250] 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.

[0251] 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°.

[0252] 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.

[0253] 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.

[0254] Finally, it should be noted that the above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A door assembly, characterized in that: include: A first hinged member is provided with a first slot body and a second slot body; The second hinge is provided with a first shaft body and a second shaft body, wherein the first shaft body is inserted into the first groove body, and the second shaft body is inserted into the second groove body; a door body, wherein one of the first hinge member and the second hinge member is fixed to a hinge side of the door body; The door body moves from a closed position to a first opening angle, the first shaft moves along a first trajectory relative to the first groove body, and the second shaft moves along a third trajectory relative to the second groove body, the first trajectory and the third trajectory are both circular arc trajectories, the first side edge of the front side surface of the door body moves toward the inner side of the initial position of the first side edge, and the rear side surface of the door seal of the door body is provided with a third side edge, and the distance that the third side edge moves backward relative to the initial position of the third side edge is less than a first preset distance, and the first preset distance is less than or equal to 2 mm.

2. The door assembly according to claim 1, wherein: Between the door closing position and the first opening angle, the third side edge first moves backward, then forward, then backward, and then forward again, and the first opening angle is greater than or equal to 20° and less than or equal to 50°.

3. The door assembly according to claim 2, wherein: The third side edge moves backward from the door closing position to a first preset angle, and the first preset angle is less than or equal to 10°.

4. The door assembly according to claim 3, wherein: From the first preset angle to the second preset angle, the third side edge moves forward and then moves backward, and the second preset angle is greater than 10° and less than or equal to 16°.

5. The door assembly according to claim 2, wherein: The door body opens from the first opening angle to the second opening angle, the first shaft moves along the second trajectory in the first groove body, the second shaft moves along the fourth trajectory in the second groove body, the second trajectory is away from the fourth trajectory, the third side edge moves forward a second preset distance, the second preset distance is greater than or equal to 2 mm and less than or equal to 25 mm, and the second opening angle is greater than or equal to 60° and less than or equal to 95°.

6. The door assembly according to claim 5, wherein: The door body opens from the second opening angle to a third opening angle, the second shaft body rotates around the first shaft body, and the third opening angle is greater than or equal to 100° and less than or equal to 130°.

7. The door assembly according to any one of claims 1 to 6, characterized in that The door body is connected to a cabinet panel, and a second side edge is provided on the hinged side of the front wall of the cabinet panel. The second side edge is located on the outside and front side of the first side edge. From the closed position to the first opening angle, the second side edge moves outward by a third preset distance relative to the initial position of the second side edge, and the third preset distance is less than or equal to 1.5 mm.

8. The door assembly according to claim 7, wherein: When the door body moves from the closed position to the first opening angle, the third preset distance first increases and then decreases.

9. The door assembly according to claim 7, wherein: The door body is opened to a third preset angle, the third preset distance is maximum, and the third preset angle is greater than or equal to 13° and less than or equal to 18°.

10. The door assembly according to claim 7, wherein: When the door body is between the first opening angle and the third opening angle, the second side edge moves outward by a fourth preset distance relative to the initial position of the second side edge, and the fourth preset distance is less than or equal to 1 mm, wherein the third opening angle is greater than the first opening angle.

11. The door assembly according to claim 7, wherein: The thickness of the door body is greater than or equal to 15 mm and less than or equal to 35 mm, and the thickness of the cabinet panel is greater than or equal to 5 mm and less than or equal to 25 mm.

12. A refrigeration device, characterized in that: The invention comprises a box body and the door assembly according to any one of claims 1 to 11, wherein the box body is provided with the other of the first hinge member and the second hinge member so that the box body is hinged to the door body.

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