Door assembly and refrigeration equipment

Abstract

The utility model relates to the technical field of hinges, and provides a door assembly and refrigeration equipment, the door assembly comprises a second hinge piece and a door body, the door body is provided with a first groove body and a second groove body, a first shaft body is inserted in the first groove body and is suitable for moving along a first track, a second shaft body is inserted in the second groove body and is suitable for moving along a third track, and on the first track, the second shaft body is suitable for moving along the third track. In the first track, the distance from the center of the first shaft body to the front side face is increased from a first distance larger than or equal to 3 mm and smaller than or equal to 7.8 mm to a second distance, the first distance is larger than or equal to 3 mm and smaller than or equal to 7.8 mm, the second distance is larger than or equal to 8 mm and smaller than or equal to 13 mm, in the third track, the distance from the center of the second shaft body to the front side face is increased from a third distance larger than or equal to 3 mm and smaller than or equal to 7 mm to a fourth distance, and the fourth distance is larger than or equal to 7 mm. The fourth distance is larger than or equal to 13 mm and smaller than or equal to 18 mm. According to the door assembly, the distance between the first track and the front side face and the distance between the third track and the front side face are limited, and the door seal can be smoothly separated from the box body.

Description

Technical Field

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

[0002] For a box device having a door body and a box body, when the door body is opened relative to the box body, the door body may extend beyond the outer wall of the box device, which may cause interference between the door body and the environmental structure where the box device is installed. For a box device that is embedded, the portion of the door body that extends beyond the outer wall of the box device may interfere with the wall, embedded cabinets or electrical appliances, affecting the opening and closing experience of the door body.

[0003] In the related art, in the technical solution that can avoid the interference between the door body and the wall, embedded cabinets or electrical appliances, the thickness of the door body is relatively large, which is difficult to meet the thickness requirement of the embedded door that needs to be hung with cabinet panels. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model proposes a door assembly, by limiting the distances from the first track and the third track to the front side, the cooperation of the first track and the third track not only meets the door opening requirement, but also reduces the distance of the door seal moving backward, ensuring that the door seal can be smoothly separated from the box body, and also reduces the distance of the first side edge of the door body moving outward, avoiding the first side edge of the door body from interfering with the adjacent environmental structure.

[0005] The utility model also provides a refrigeration device.

[0006] According to the first embodiment of the present invention, the door assembly comprises:

[0007] The door body is provided with a first slot body and a second slot body, wherein the first slot body and the second slot body are fixed to a hinged side of the door body, and the first slot body is located at a front side of the second slot body;

[0008] The second hinge is provided with a first shaft body and a second shaft body, the first shaft body is inserted in the first groove body and is suitable for moving along a first trajectory in the first groove body, the second shaft body is inserted in the second groove body and moves along a third trajectory in the second groove body, so that the door body moves from a closed position to a first open angle, the starting end of the first trajectory and the starting end of the third trajectory are close to the front side surface of the door body, in the first trajectory, the distance from the center of the first shaft body to the front side surface increases from a first distance to a second distance, the first distance is greater than or equal to 3mm and less than or equal to 7.8mm, the second distance is greater than or equal to 8mm and less than or equal to 13mm, in the third trajectory, the distance from the center of the second shaft body to the front side surface increases from the third distance to a fourth distance, the third distance is greater than or equal to 3mm and less than or equal to 7mm, and the fourth distance is greater than or equal to 13mm and less than or equal to 18mm.

[0009] According to the door assembly of the embodiment of the utility model, the door body can be opened from a closed position to a first opening angle, the first axis moves along a first trajectory, and the second axis moves along a third trajectory, the distance from the first trajectory to the front side surface of the door body gradually increases, and the distance from the third trajectory to the front side surface of the door body gradually increases, by limiting the distances from the first trajectory and the third trajectory to the front side surface, the cooperation of the first trajectory and the third trajectory not only meets the door opening requirements, but also reduces the distance of the door seal moving backward, ensuring that the door seal can be smoothly separated from the box body, and can also reduce the distance that the first side edge of the door body moves outward, avoiding interference between the first side edge of the door body and adjacent environmental structures.

[0010] According to an embodiment of the present utility model, the first trajectory and the third trajectory are both centered on the first circle center, the first trajectory has a first radius as a radius, the third trajectory has a second radius as a radius, and the second radius is greater than the first radius.

[0011] According to an embodiment of the present invention, the first radius is greater than or equal to 5 mm, and the second radius is greater than or equal to 20 mm.

[0012] According to an embodiment of the present invention, the first opening angle is greater than or equal to 10° and less than or equal to 50°.

[0013] According to an embodiment of the present invention, at the midpoint of the first trajectory, the distance from the center of the first shaft to the front side surface is greater than or equal to 7 mm and less than or equal to 10 mm;

[0014] And / or, at the midpoint of the third trajectory, the distance from the center of the second shaft to the front side surface is greater than or equal to 9 mm and less than or equal to 12 mm.

[0015] According to an embodiment of the present invention, the first distance is greater than or equal to 6 mm and less than or equal to 7 mm, and the second distance is greater than or equal to 8 mm and less than or equal to 10 mm;

[0016] and / or,

[0017] The third distance is greater than or equal to 5 mm and less than or equal to 6 mm, and the fourth distance is greater than or equal to 14 mm and less than or equal to 16 mm.

[0018] According to one embodiment of the utility model, the first shaft body is inserted in the first groove body and is suitable for moving along a second trajectory in the first groove body, and the second shaft body is inserted in the second groove body and moves along a fourth trajectory in the second groove body, so that the door body moves from the first opening angle to the second opening angle, and in the second trajectory, the distance from the center of the first shaft body to the front side surface decreases from the second distance to the fifth distance, and the fifth distance is greater than or equal to 6 mm and less than or equal to 13 mm. In the fourth trajectory, the distance from the center of the second shaft body to the front side surface increases from the fourth distance to the sixth distance, and the sixth distance is greater than or equal to 18 mm and less than or equal to 23 mm.

[0019] According to an embodiment of the present invention, the second trajectory extends along a straight line or along a second elliptical trajectory, and the fourth trajectory extends along a first elliptical trajectory.

[0020] According to an embodiment of the present invention, the second opening angle is greater than or equal to 60° and less than or equal to 95°.

[0021] According to an embodiment of the present invention, at the midpoint of the second trajectory, the distance from the center of the first shaft to the front side surface is greater than or equal to 7 mm and less than or equal to 9 mm;

[0022] And / or, at the midpoint of the fourth trajectory, the distance from the center of the second shaft to the front side surface is greater than or equal to 16 mm and less than or equal to 20 mm.

[0023] According to one embodiment of the utility model, the first shaft body is inserted in the first groove body and is suitable for rotating in the first groove body, the second shaft body is inserted in the second groove body and moves along a fifth trajectory in the second groove body, so that the door body moves from the second opening angle to the third opening angle, the third opening angle is greater than the second opening angle, the distance from the center of the first shaft body to the front side surface is between the second distance and the fifth distance, and in the fifth trajectory, the distance from the center of the second shaft body to the front side surface increases from the sixth distance to the seventh distance, and the seventh distance is greater than or equal to 18 mm and less than or equal to 30 mm.

[0024] According to an embodiment of the present invention, the second shaft body rotates around the center line of the first shaft body along the fifth trajectory at a third radius, and the third radius is equal to the distance between the terminal end of the second trajectory and the terminal end of the fourth trajectory.

[0025] According to an embodiment of the present invention, the third radius is greater than or equal to 10 mm and less than or equal to 30 mm.

[0026] According to the second aspect of the present invention, a refrigeration device comprises a box body and the door assembly as described above, wherein the box body is provided with the second hinge, and the box body is hinged to the door body.

[0027] According to the refrigeration device of the embodiment of the utility model, 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.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a three-dimensional structural schematic diagram of a hinge assembly provided by an embodiment of the utility model installed in a refrigeration device;

[0031] Figure 2 yes Figure 1 A schematic diagram of the partially enlarged structure of the A part;

[0032] Figure 3 It is a schematic diagram of a top view of the structure of a hinge assembly provided by an embodiment of the utility model installed in a refrigeration device;

[0033] Figure 4 yes Figure 3 A schematic diagram of the partially enlarged structure of the B part;

[0034] Figure 5 It is a structural schematic diagram of the installation state of the first hinged part and the second hinged part of the hinge assembly provided by an embodiment of the utility model;

[0035] Figure 6: is a structural schematic diagram of the hinge assembly provided by the embodiment of the utility model in the initial position; at this time, the door body is in the closed position; the dotted lines perpendicular to the track in the figure indicate the separation positions of the various grooves;

[0036] Figure 7 1 is a schematic diagram of the structure of the hinge assembly provided by the embodiment of the utility model at a first opening angle. The figure takes the first opening angle of 25° as an example for explanation. At this time, the door body is opened 25° relative to the box body.

[0037] Figure 8 1 is a schematic diagram of the structure of the hinge assembly provided by the embodiment of the utility model at the second opening angle. The second opening angle of 70° is taken as an example. At this time, the door body is opened 70° relative to the box body.

[0038] Fig. 9 1 is a schematic diagram of the structure of the hinge assembly provided by the embodiment of the utility model at the third opening angle. The third opening angle of 100° is used as an example for explanation. At this time, the door body is opened 100° relative to the box body.

[0039] Fig.10 It is a schematic diagram of the distances from the first track and the second track of the hinge assembly provided by the embodiment of the utility model to the front side surface;

[0040] Fig.11 It is a schematic diagram of the distances from the third track, the fourth track and the fifth track of the hinge assembly provided by the embodiment of the utility model to the front side surface;

[0041] Fig.12 It is a schematic diagram of the distance from the wall surface to the front side surface of the first slot body of the hinge assembly provided by an embodiment of the utility model;

[0042] Fig.13 It is a schematic diagram of the distance from the wall surface to the front side surface of the second groove body of the hinge assembly provided by the embodiment of the utility model;

[0043] Fig.14 1 is a schematic diagram of the structure of the hinge assembly provided by the embodiment of the utility model installed on the refrigeration equipment, in which the dotted line N1 in the figure indicates the trajectory of the first side edge, the dotted line N2 in the figure indicates the trajectory of the second side edge, and the dotted line N3 in the figure indicates the trajectory of the third side edge;

[0044] Reference numerals:

[0045] 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;

[0046] 200, second hinge; 210, first shaft; 220, second shaft;

[0047] 310, door body; 311, first side edge; 312, front side surface; 313, first side wall; 314, second side wall; 320, door seal; 321, third side edge; 323, preset reference surface; 330, cabinet board; 331, second side edge; 332, front wall surface;

[0048] 400. Refrigeration equipment; 410. Box; 500. Environmental structure. DETAILED DESCRIPTION

[0049] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0050] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0051] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0052] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] When the door body is installed to a fixed box or door frame through a hinge assembly, the door body may interfere with or collide with adjacent boxes, cabinets, etc. during movement. Therefore, the movement path of the door body is adjusted by the hinge assembly to ensure that the door body can be opened and closed stably. The hinge assembly with the function of adjusting the movement path of the door body has a large length in the thickness direction of the door body, which is difficult to adapt to a thinner door body and has limited application scenarios. In order to solve the above problems, a hinge assembly of an embodiment of the utility model is provided, which is suitable for a thinner door body and can also avoid interference or collision with adjacent boxes, cabinets, etc. during the movement of the door body.

[0055] 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, but the application scenarios of the hinge assembly of the embodiment of the present invention are not limited to the listed application scenarios.

[0056] refer to Figures 1 to 4As shown, the hinge assembly of the embodiment of the utility model can be applied to a door body 310 that is openable and closable and connected to a box body 410, and a user can directly observe the front side 312 of the door body 310; it can also be applied to a embedded door body 310, and the front side 312 of the door body 310 is connected to a cabinet panel 330, and a 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.

[0057] The environmental structure 500 may be understood as a wall, a cabinet, an electrical appliance, etc. The side edge of the door body 310 (hereinafter referred to as the first side edge 311) may be understood as being located at the connection between the front side 312 of the door body 310 and the first side wall 313 (the left side wall or the right side wall of the door body 310), the front side 312 and the first side wall 313 are located at adjacent sides of the door body 310, the first side wall 313 is located at the hinge side of the door body 310, the hinge assembly is installed at the hinge side of the door body 310, the opening and closing side of the door body 310 and the hinge side are arranged opposite to each other in the left and right directions, and at 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 and the first side wall 313 are arranged opposite to each other in the left and right directions. The user usually grasps the door body 310 at 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, and 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.

[0058] 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 (the left wall or the 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, and 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 surface 332 of the cabinet panel 330 intersects with the first wall surface, the intersection is the second side edge 331; when a chamfered area is provided between the front wall surface 332 of the cabinet panel 330 and the first wall surface, any straight line extending along the height direction of the chamfered area can be understood as the second side edge 331, and the second side edge 331 is not limited to a fixed edge line, and the second side edge 331 can switch among multiple vertical lines between the front wall surface 332 of the cabinet panel 330 and the first wall surface.

[0059] Regarding the rear side edge of the door seal 320 of the door body 310 (hereinafter referred to as the third side edge 321): the connection between the rear wall surface of the door seal 320 and the third side wall of the door seal 320 forms the third side edge 321, and the third side wall is located at the hinge 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 wall surface and the third side wall, or the third side edge 321 is a longitudinal edge line in the chamfered area between the rear wall surface and the third side wall (the third side edge 321 can switch between multiple longitudinal edges).

[0060] The embodiment of the first aspect of the utility model refers 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 in the first slot body 110, and the second shaft body 220 is inserted in the second slot body 120.

[0061] 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, so as 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.

[0062] In the following embodiments, one of the first hinge 100 and the second hinge 200 is provided on the door body 310, and the other is provided on the box body 410. The box body 410 is provided with an opening on the front side, and the door body 310 switches between the opening state of the box body 410 and the closing state. The hinge side of the first hinge 100 or the second hinge 200 provided on the door body 310 (or the box body 410) can be understood as the first hinge 100 or the second hinge 200 being integrally formed with the door body 310 (or the box body 410), or the first hinge 100 or the second hinge 200 being an independent part and installed on the door body 310 (or the box body 410).

[0063] 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 connected, and the second slot body 120 includes a third slot portion 121 and a fourth slot portion 122 that are connected. The first slot portion 111 extends along an arc around the 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 the same center and 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. At this time, the first shaft body 210 and the second shaft body 220 can move along a concentric circle path. A second groove 112 is provided at the terminal end of the first groove 111 so that the first shaft 210 can move from the first groove 111 to the second groove 112 . A fourth groove 122 is provided at the terminal end of the third groove 121 so that the second shaft 220 can move from the third groove 121 to the fourth groove 122 .

[0064] The fourth groove portion 122 extends along the first ellipse, and in the direction away from the first groove portion 111 and the third groove portion 121, the distance between the center line of the first shaft body 210 and the center line of the second shaft body 220 increases, so as to ensure that the door body 310 is opened as soon as possible relative to the box body 410. Among them, the distance between the second groove portion 112 and the fourth groove portion 122 increases, which can be understood as the distance between the center lines of the second groove portion 112 and the fourth groove portion 122 increases, or the center of the trajectory of the second groove portion 112 intersects with the center of the trajectory of the fourth groove portion 122.

[0065] The first axis 210 in the second groove 112 and the second axis 220 in the fourth groove 122 cooperate with each other to ensure that the first side edge 311 of the door body 310 moves outwardly at a short 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 outwardly at a short distance, thereby avoiding interference between the second side edge 331 of the cabinet panel 330 and the adjacent environmental structure 500.

[0066] 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 a direction away from the door body 310, such as moving toward the left side of the left door body 310 and toward 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 aforementioned 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 moving distance of the first side edge 311.

[0067] 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 a direction away from the cabinet panel 330, such as moving toward the left side of the left door body 310 or toward the right side of the right door body 310. The aforementioned 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 moving distance of the second side edge 331.

[0068] It can be understood that the first hinge 100 and the second hinge 200 switch between the initial position and the 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 the open position. 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, and 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.

[0069] refer to Figure 6 As shown, in the initial position, the first shaft body 210 is located at one end of the first groove portion 111 away from the second groove portion 112, and the second shaft body 220 is located at one 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.

[0070] refer to Figure 7 and Figure 8As shown, in the open position, the first shaft body 210 is located in the first slot portion 111 and the second shaft body 220 is located in the third slot portion 121, or the first shaft body 210 is located in the second slot portion 112 and the second shaft body 220 is located in the fourth slot portion 122. When the first shaft body 210 is located in the first slot portion 111 and the second shaft body 220 is located in the third slot portion 121, the first hinge 100 and the second hinge 200 are between the initial position and the first opening angle; when the first shaft body 210 is located in the second slot portion 112 and the second shaft body 220 is located in the fourth slot portion 122, the first hinge 100 and the second hinge 200 move between the first opening angle and the second opening angle. There is a corresponding relationship between the positions of the first shaft body 210 and the second shaft body 220. 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°.

[0071] 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 various and will not be listed one by one, but 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 path or structure of the first slot 110 and the second slot 120, a variety of relative movement modes can be provided.

[0072] In the hinge assembly of the embodiment of the utility model, 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 to realize the opening and closing of the door body 310; the trajectory of the first groove body 110 and the trajectory of the second groove body 120 cooperate to reduce the maximum distance between the first groove body 110 and the second groove body 120. When one of the first hinge 100 and the second hinge 200 is installed on the door body 310, the length of the first hinge 100 in the front-to-back direction can be reduced, which can be suitable for the door body 310 with a smaller thickness. It can also reduce the distance that the first side edge 311 of the door body 310 moves outward, thereby avoiding the interference between the first side edge 311 of the door body 310 and the adjacent environmental structure 500.

[0073] It should be noted that, taking into account processing errors, assembly errors, design requirements and the like, the first groove portion 111 and the third groove portion 121 extend along concentric arc trajectories, and the concentric arcs here are not required to be strictly concentric arcs, and can be approximately concentric arcs, and 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.

[0074] It should also be noted that the hinge assembly of the embodiment of the utility model, the first hinge 100 or the second hinge 200 is installed on the door body 310, and the door opening and closing principle is the same. 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.

[0075] An implementation manner of the motion trajectory of the first shaft 210 and the second shaft 220:

[0076] 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 guiding direction of the first groove portion 111, and the second shaft body 220 moves along the guiding 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.

[0077] 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.

[0078] 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 track 132, and the second shaft body 220 moves along the fourth track 142, and the fourth track 142 is a track of the first ellipse. As the door opening angle increases, the second track 132 and the fourth track 142 move away from each other. The specific path of the second track 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, in the direction away from the first groove portion 111, the distance difference between the second groove portion 112 and the fourth groove portion 122 to the front side surface 312 of the door body 310 increases. It should be noted that in the process of opening the door, 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 track and the first shaft body 210 moves in the second groove portion 112.

[0079] 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.

[0080] During the concentric rotation of the first shaft 210 and the second shaft 220 around the first center of the circle, the distance that the first side edge 311 of the door body 310 moves outward is small, which can avoid the problem of the door body 310 colliding with the adjacent environmental structure 500. The distance that the second side edge 331 of the cabinet plate 330 moves outward is also small, which can also avoid the problem of the cabinet plate 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 and 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 distance that the first side edge 311 of the door body 310 moves outward can be further reduced, for example, to ensure 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 no or as little extrusion force between the door seal 320 and the box body 410 as possible to avoid jamming between the door seal 320 and the box body 410, thereby ensuring that the door body 310 can be opened smoothly.

[0081] It should be noted that, when the first hinge 100 is disposed on the door body 310, the starting end of the first groove 110 and the starting end of the second groove 120 are both close to the front side 312 of the door body 310, and the terminal end of the second groove 120 is far away from the front side 312 of the door body 310. The position of the terminal end of the first groove 110 is not limited. In some cases, the terminal end of the first groove 110 is as close to the front side 312 of the door body 310 as possible. When the distance difference between the first groove 110 and the second groove 120 increases, the distance from the second groove 120 to the front side 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.

[0082] It can be understood that, in the left-right direction of the door body 310, in the direction from the starting end to the ending end of the first slot body 110, the first slot body 110 extends in the direction close to the first side wall 313, and in the direction from the starting end to the ending end of the second slot body 120, the second slot body 120 extends in the direction close to the first side wall 313. In combination with the above content, in the thickness direction of the door body 310, in the direction from the starting end to the ending end of the second slot body 120, the second slot body 120 extends from the front side to the rear side of the door body 310, and the extension path of the first slot body 110 in the thickness direction of the door body 310 is not limited.

[0083] 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 slot body 110 and the second slot 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 slot body 110 and the second slot 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 is greater than or equal to 13 mm and less than or equal to 33 mm. The first set position can be a point position of the first slot body 110 or the second slot body 120, and the second set position can also be a point position of the first slot body 110 or the second slot body 120.

[0084] It can be understood that, in the front-to-back direction of the hinge assembly, the distance from the front end to the rear end of the second slot body 120 is greater than or equal to 15 mm and less than or equal to 33 mm. That is, the first setting position and the second setting position are both set at the second slot body 120. The first setting position is set at the starting end of the second slot body 120, and the second setting position is set at the ending end of the second slot body 120.

[0085] 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 utility model, 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.

[0086] Regarding the first groove portion 111 and the third groove portion 121:

[0087] It can be 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, and at the same time, the second shaft 220 moves from the starting end of the third slot 121 to the ending end of the fourth slot 122. The ending end of the first slot 111 is connected to the starting end of the second slot 112, and the ending end of the third slot 121 is connected to the starting end of the fourth slot 122. That is, when the first hinge 100 and the second hinge 200 are at the first opening angle, the first shaft 210 is located at the ending end of the first slot 111 and the second shaft 220 is located at the ending end of the third slot 121.

[0088] It can be understood that the second radius R2 is greater than the first radius R1 , and the third groove portion 121 is smoother 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 .

[0089] The position of the first circle center Q1 is based on the preset reference surface 323, which is the outer side of the door seal 320 on the pivoting side of the door body 310. The outer side here can be understood as the surface facing the external environment, and the inner side is the surface facing the opening of the box. The preset reference surface 323 can be understood as the third side wall of the door seal 320.

[0090] It can be 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, 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. In the case where the first center is set on the preset reference plane 323 and 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.

[0091] It is understandable that, based on the first circle center being located on the second side of the preset reference plane 323, the distance from the first circle center Q1 to the preset reference plane 323 is less than the second threshold. The second threshold is set to be greater than or equal to 50 mm and less than or equal to 200 mm. Of course, the second threshold may not have an upper limit.

[0092] It is understandable that, based on the first circle center Q1 being located on the first side of the preset reference plane 323, the distance from the first circle center Q1 to the preset reference plane 323 is less than a first threshold, and the first threshold is set to be less than or equal to 20 mm, such as less than or equal to 10 mm.

[0093] It should be noted that the position of the first circle 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 circle center 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 circle 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.

[0094] 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 a 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 are both bent toward the front side of the door body 310.

[0095] 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-30 mm; the second radius R2 can be set to 20 mm-40 mm, and the thickness of the door body 310 can be controlled between 15 mm and 35 mm. The size of the first radius and the second radius is not limited, and the size of the first radius and the second radius can be adjusted according to the different thicknesses of the door body 310.

[0096] It can be understood that the opening angle of the first hinge 100 and the second hinge 200 is less than or equal to the first opening angle, and the distance between the center line of the first shaft body 210 and the center line of the second shaft body 220 in the front-to-back direction is less than or equal to 10 mm, so as to reduce the distance between the first slot body 110 and the second slot body 120, and reduce the length of the first hinge 100 in the front-to-back direction, which is suitable for a door body 310 with a smaller thickness. In the open position, when the opening angle is less than or equal to the first opening angle, the distance between the center line of the first shaft body 210 and the center line of the second shaft body 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.

[0097] It is understandable that, in the initial position, the distance between the center line of the first shaft body 210 and the center line of the second shaft body 220 in the front-to-back direction is less than 2.5 mm, so as to reduce the distance between the first slot body 110 and the second slot body 120, reduce the length of the first hinge 100 in the front-to-back direction, and be suitable for a door body 310 with a smaller thickness. In some cases, in the initial position, the distance between the center line of the first shaft body 210 and the center line of the second shaft body 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.

[0098] Regarding the second groove portion 112 and the fourth groove portion 122:

[0099] refer to Figure 7 and Figure 8 As shown, it can be understood that the second groove 112 extends along a straight line, or the second groove 112 extends along a second ellipse; that is, the second track 132 is a straight track or a track extending along the second ellipse. When the second groove 112 extends along a straight line, the structure is simple; when the second groove 112 extends along the second ellipse, the first shaft body 210 and the second shaft body 220 can move smoothly.

[0100] 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.

[0101] It is understandable that the first shaft 210 travels a first length in the second slot 112, and the second shaft 220 travels a second length in the fourth slot 122, and the second length is greater than the first length. That is, the length of the fourth track 142 is greater than the length of the second track 132, ensuring smooth opening and closing of the door.

[0102] It can be understood that the first axis 210 is located in the second groove portion 112 and the second axis 220 is located in the fourth groove portion 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 axis 210 and the center line of the second axis 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 body 110 and the second groove body 120, and reduce the length of the first hinge 100 in the front-to-back direction, which is suitable for a door body 310 with a smaller thickness.

[0103] 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:

[0104] x=M / sin(θ)*cos(90°-a-θ)-R*sin(a), y=M / sin(θ)*sin(90°-a-θ)

[0105] Wherein, 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 value of the coordinate 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, the second coordinate axis Y is perpendicular to the front side, and 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.

[0106] Regarding the second tank 120:

[0107] Understandably, reference Figure 8 and Fig. 9 As shown, the second slot body 120 further includes a fifth slot portion 123, which is disposed at one end of the fourth slot portion 122 away from the third slot portion 121 and communicates with the fourth slot portion 122, and the fifth slot portion 123 extends along an arc 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 in the fifth slot portion 123, so that the first hinge 100 and the second hinge 200 can be opened to a third opening angle, and the third opening angle is greater than the second opening angle.

[0108] In the case where the second slot body 120 is provided with the fifth slot portion 123, the second shaft body 220 is suitable for moving along the fifth track 143 in the second slot body 120. The fifth track 143 is an arc path with the second center Q2 as the center and the third radius R3 as the radius. The fifth track 143 is provided at the terminal end of the fourth track 142 and connected to the fourth track 142. The second shaft body 220 moves along the third track 141, the fourth track 142 and the fifth track 143 in sequence. The second shaft body 220 reaches the terminal end of the fifth track 143, and the first hinge 100 and the second hinge 200 reach the third opening angle.

[0109] It can be understood 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.

[0110] 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.

[0111] In some cases, the first shaft 210 rotates at the end of the second track 132, or the first shaft 210 retreats along the second track 132 to a preset position of the first slot 110 and rotates at the preset position. The preset position can be a position in the first slot 111 or the second slot 112.

[0112] 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 a 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.

[0113] 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.

[0114] 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.

[0115] It can be understood that the opening angle of 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 distance between the center line of the first shaft body 210 and the center line of the second shaft body 220 in the front-to-back direction is less than or equal to 20 mm, so as to reduce the length of the first hinge 100 in the front-to-back direction, and thus be suitable for the door body 310 with a smaller thickness. In the case of the open position and the opening angle greater than the second opening angle and less than or equal to the third opening angle, the distance between the center line of the first shaft body 210 and the center line of the second shaft body 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.

[0116] Regarding the first tank body 110 and the second tank body 120:

[0117] 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 allows the first groove portion 111 and the second groove portion 112 to transition tangentially, thereby ensuring a smooth transition between the first groove portion 111 and the second groove portion 112. The first shaft body 210 can move smoothly between the first groove portion 111 and the second groove portion 112, thereby avoiding jamming during the movement of the first shaft body 210.

[0118] It can be 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, and the third groove portion 121 and the fourth groove portion 122 are tangently transitioned through the second transition section to ensure smooth transition between the third groove portion 121 and the fourth groove portion 122, and the second shaft body 220 moves smoothly between the third groove portion 121 and the fourth groove portion 122, avoiding jamming during the movement of the second shaft body 220.

[0119] It can also be understood that the fourth groove portion 122 is tangent to the fifth groove portion 123 at the connection point. The fourth groove portion 122 and the fifth groove portion 123 can be directly connected or connected through a third transition section, and the third transition section makes the fourth groove portion 122 and the fifth groove portion 123 tangent to each other, ensuring a smooth transition between the fourth groove portion 122 and the fifth groove portion 123, and the second shaft body 220 moves smoothly between the fourth groove portion 122 and the fifth groove portion 123, avoiding jamming during the movement of the second shaft body 220.

[0120] It can be understood that the diameter of the first shaft body 210 is greater than the diameter of the second shaft body 220, and correspondingly, the width of the first trough body 110 is greater than the width of the second trough body 120, and the width is the length perpendicular to the center line. The first shaft body 210 serves as the main axis and the second shaft body 220 serves as the auxiliary axis. The first shaft body 210 plays a major role in bearing the load. By thickening the diameter of the first shaft body 210, the structural strength of the first shaft body 210 can be enhanced.

[0121] It can be understood that the length of the first shaft body 210 is greater than the length of the second shaft body 220, and correspondingly, the depth of the first slot body 110 is greater than the depth of the second slot body 120. During the installation process, the first shaft body 210 is first inserted into the bottom of the first slot body 110, and the second shaft body 220 is then inserted into the bottom of the second slot body 120. The first shaft body 210 is first positioned with the first slot body 110, and the second shaft body 220 is then positioned with the second slot body 120. The design of different axial lengths can simplify the positioning and installation of the first hinge 100 and the second hinge 100.

[0122] Understandably, reference Figure 6 As shown, a first avoidance groove portion 114 is provided at the starting end of the first groove body 110, a second avoidance groove portion 124 is provided at the starting end of the second groove body 120, the door body 310 is in a closed position, a first gap is provided between the first shaft body 210 and the end of the first avoidance groove portion 114, a second gap is provided between the second shaft body 220 and the second avoidance groove portion 124, the door body 310 is in a negative angle closed state, the first shaft body 210 is located at the first avoidance groove portion 114, and the second shaft body 220 is located at the second avoidance groove portion 124.

[0123] In some cases, the first avoidance groove 114 and the second avoidance groove 124 are both around the first center of the circle, the first avoidance groove 114 is an arc groove with a first radius as a radius, and the second avoidance groove 124 is an arc groove with a second radius as a radius. The first avoidance groove wall and the first groove 111 extend in the same trajectory, and the second avoidance groove 124 and the third groove 121 extend in the same trajectory.

[0124] About opening angle:

[0125] It can be understood that, in the open position, the opening angle of the first hinge 100 and the second hinge 200 is less than or equal to the first opening angle, the first opening angle 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.

[0126] 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.

[0127] It can be 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° and less than or equal to 95°. At this time, the first shaft 210 is located in the second groove 112 and the second shaft 220 is located in the fourth groove 122. The second opening angle can be 65° to 75°, such as 70°. Figure 7 and Figure 8 A transition from a first opening angle to a second opening angle is illustrated.

[0128] 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 trajectory 132 toward the terminal end away from the first trajectory 131 and the second shaft body 220 moves along the fourth trajectory 142 toward the terminal end away from the third trajectory 141.

[0129] It can be understood that, based on the second slot body 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 body 220 is located in the fifth slot portion 123 and the first shaft body 210 is located in the second slot portion 112. The third opening angle can be 100° to 110°, such as 105°. Figure 8 and Fig. 9 A transition from the second opening angle to the third opening angle is illustrated.

[0130] It can be understood that based on the second slot body 120 including the fifth slot portion 123, when the door body 310 moves 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 trajectory 143 toward the terminal end away from the fourth trajectory 142.

[0131] It can be understood that the second shaft body 220 moves along the fifth track 143, and the fifth track 143 is an arc with a third radius R3 around the center line of the first shaft body 210, and the third radius R3 is equal to the distance between the center line of the first shaft body 210 and the center line of the second shaft body 220. The fifth track 143 cooperates with the first shaft body 210 to reduce the distance from the fifth track 143 to the front side 312 of the door body 310, reduce the length of the first hinge 100 in the front-to-back direction, and further reduce the thickness of the door body 310.

[0132] 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 .

[0133] 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 backwards for a smaller distance, which helps to reduce the thickness of the door body 310.

[0134] It should be noted that the range settings of the first opening angle and the second opening angle are affected by multiple factors, such as ensuring that the first groove 111 and the second groove 112 are as smoothly transitioned as possible, ensuring that the third groove 121 and the fourth groove 122 are as smoothly transitioned as possible, and ensuring that the fourth groove 122 and the fifth groove 123 are as smoothly transitioned as possible while meeting the thickness requirements of the door body 310. The third opening angle corresponds to the maximum door opening angle of the door body 310 and is set according to the door opening requirements of the door body 310.

[0135] 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.

[0136] 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°.

[0137] In the door closing position, a first spacing 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 spacing is less than or equal to 2.5 mm. For example, the first spacing is greater than or equal to 1 mm and less than or equal to 2 mm.

[0138] Regarding the distances between the first shaft body 210 and the second shaft body 220 and the front side surface 312 of the door body 310:

[0139] In the process of the door body 310 moving 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, and both the first track 131 and the third track 141 are arc 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, and the first track 131 and the third track 141 both extend in the direction close to the first side wall 313 (the side wall of the hinged side) of the door body 310.

[0140] Among them, the first track 131 and the third track 141 can be concentric arc tracks, and the details can be referred to the relevant content in the embodiment of the utility model; 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, such as 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.

[0141] The following content, reference Fig.10 and Fig.11 As shown, the description is based on the dynamic trajectory of the first shaft body 210 and the second shaft body 220. It should be noted that, Fig.10 and Fig.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 them. Fig.10 and Fig.11 The dynamic trajectories of the first axis and the second axis are reflected by the distance parameter.

[0142] refer to Fig.10 As shown, in the first track 131, the distance from the center of the first shaft body 210 to the front side surface 312 increases from the first distance a1 to the second distance a2, the first distance a1 is greater than or equal to 4 mm and less than or equal to 7.8 mm, the second distance a2 is greater than or equal to 8 mm and less than or equal to 13 mm, and the first shaft body 210 gradually moves away from the front side surface 312. At the starting position of the first track 131, the minimum distance from the center of the first shaft body 210 to the front side surface 312 of the door body 310 is 1 mm, and at this time, the front end of the first slot body 110 can be coplanar with the front side surface 312.

[0143] 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.

[0144] refer to Fig.11 As shown, in the third track 141, the distance from the center of the second shaft body 220 to the front side surface 312 increases from the third distance a3 to the fourth distance a4, the third distance a3 is greater than or equal to 4mm and less than or equal to 7mm, and the fourth distance a4 is greater than or equal to 13mm and less than or equal to 18mm. At the starting position of the third track 141, the radius of the second shaft body 220 is 3mm, and the minimum distance from the center of the second shaft body 220 to the front side surface 312 of the door body 310 is 1mm. At this time, the front end of the second slot body 120 can be coplanar with the front side surface 312.

[0145] 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.

[0146] The difference between the first distance a1 and the third distance a3 may be understood as the above-mentioned first distance l1.

[0147] It is understood that at the midpoint of the first track 131, the distance a8 from the center of the first shaft body 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 track 131, the distance from the center of the first shaft body 210 to the front side surface 312 is greater than or equal to 8 mm and less than or equal to 9 mm.

[0148] The midpoint of the first track 131 may be understood as half the arc length of the first track 131 .

[0149] It is understandable 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 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.

[0150] The midpoint of the third track 141 may be understood as half the arc length of the third track 141 .

[0151] 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.

[0152] When the door body 310 moves from the first opening angle to the second opening angle, the first shaft body 210 moves along the second track 132, and the second shaft body 220 moves along the fourth track 142. The second track 132 and the fourth track 142 cooperate to form a cross-shaped slideway. The second track 132 and the fourth track 142 can refer to the above content.

[0153] refer to Fig.10 As shown, in the second track 132, the distance from the center of the first shaft body 210 to the front side surface 312 decreases from the second distance a2 to the fifth distance a5, and 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 track 132, the distance a10 from the center of the first shaft body 210 to the front side surface 312 is greater than or equal to 7 mm and less than or equal to 9 mm.

[0154] 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.

[0155] It can be understood that the movement trajectory of the first axis 210 is: the first axis 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 axis 210 gradually moves away from the front side surface 312. In the second trajectory 132, the first axis 210 gradually approaches the front side surface 312. The inflection point of the movement trajectory of the first axis 210 is located at the connection between the first trajectory 131 and the second trajectory 132.

[0156] refer to Fig.11 As shown, in the fourth track 142, the distance from the center of the second shaft body 220 to the front side surface 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 track 142, the distance from the center of the second shaft body 220 to the front side surface 312 is greater than or equal to 16 mm and less than or equal to 20 mm.

[0157] 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 surface of the second shaft body 220 to the front side surface 312 is greater than or equal to 18 mm and less than or equal to 20 mm.

[0158] It can be understood that the movement trajectory of the second shaft 220 is to continuously move away from the front side surface 312 .

[0159] 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.

[0160] The distance from the center of the first shaft body 210 to the front side surface 312 is between the second distance a2 and the fifth distance a5, that is, the first shaft body 210 is a point in the second track 132. If the first shaft body 210 is located at the terminal end of the second track 132, the distance from the center of the first shaft body 210 to the front side surface 312 is the fifth distance a5.

[0161] refer to Fig.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 30 mm.

[0162] It should be noted that the seventh distance a7 can be but is not limited to being set at the end of the fifth track 143, and can also be set at the midpoint of the fifth track 143 or a position close to the end. For example, in the fifth track 143, the second shaft 220 can first move away from the front side surface 312 and then approach the front side surface 312.

[0163] The minimum distance between the wall of one of the first shaft body 210 and the second shaft body 220 close to the front side surface 312 and the front side surface 312 is the first minimum distance, the maximum distance between the second shaft body 220 and the front side surface 312 is the first maximum distance, and 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, so that the thickness of the door body 310 is 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 are reserved for the wall thickness of the first slot body 110 and the second slot body 120 of at least 1 mm.

[0164] 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.

[0165] The following content, reference Fig.12 and Fig.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, Fig.12 and Fig.13 The first slot body and the second slot body in the embodiment may extend along the above-mentioned track but are not limited to the above-mentioned track. Fig.12 and Fig.13 The positional relationship between the first slot body and the second slot body is reflected by the distance parameter.

[0166] 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 at the front side 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 at the hinged side of the door body 310;

[0167] The first shaft 210 is inserted into the first slot body 110, and the second shaft 220 is inserted into the second slot body 120; the starting end of the first slot body 110 and the starting end of the second slot body 120 are both far away from the first side wall 313, and the terminal end of the first slot body 110 and the terminal end of the second slot body 120 are both close to the first side wall 313; the door body 310 is in a closed position, the first shaft 210 is located at the starting end of the first slot body 110 and the second shaft 220 is located at the starting end of the second slot body 120, and during the door opening process, the first shaft 210 moves toward the terminal end of the first slot body 110, and the second shaft 220 moves toward the terminal end of the second slot body 120 until the maximum door opening angle is reached.

[0168] refer to Fig.12 As shown, regarding the first tank body 110:

[0169] From the starting end to the ending end of the first slot body 110 , the distance from the first slot 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 slot body 110 to the front side surface 312 can decrease or remain unchanged, which can be selected according to needs.

[0170] There is a first distance L1 from the starting end of the first trough 110 to the front side 312 of the door body 310, and the first distance L1 is greater than or equal to 1 mm and less than or equal to 4.8 mm. There is a second distance L2 from the first inflection point of the first trough 110 to the front side 312, and the second distance L2 is greater than or equal to 5 mm and less than or equal to 10 mm. There is a fifth distance L5 from the terminal end of the first trough 110 to the front side 312, and 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 direction close to the front side 312, which helps to reduce the spacing of the first trough 110 in the front-to-back direction, and helps to reduce the thickness of the door body 310.

[0171] The distance from the first slot body 110 to the front side surface 312 of the door body 310 is the minimum distance.

[0172] 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 an 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.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] Among them, the first opening angle can refer to the above content.

[0177] A midpoint is disposed 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.

[0178] 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 with the sixth track, and the first track 131 and the second track 132 are transitioned through the sixth track arc, thereby ensuring that the first shaft body 210 can move in the tangential direction and reducing the movement resistance of the first shaft body 210.

[0179] It can be understood that the sixth track is provided with a first inflection point.

[0180] 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 at the front side of the first slot body 110. The structure is simple and can ensure the smooth movement of the first shaft body 210.

[0181] refer to Fig.13 As shown, regarding the second tank body 120:

[0182] 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 .

[0183] There is a third distance L3 from the starting end of the second groove body 120 to the front side surface 312 of the door body 310, and the third distance L3 is greater than or equal to 1 mm and less than or equal to 4 mm. There is a fourth distance L4 from the second inflection point of the second groove body 120 to the front side surface 312, and the fourth distance L4 is greater than or equal to 10 mm and less than or equal to 15 mm. There is a seventh distance L7 from the ending end of the second groove body 120 to the front side surface 312, and the seventh distance L7 is greater than or equal to 15 mm and less than or equal to 27 mm.

[0184] The distance from the second slot body 120 to the front side surface 312 of the door body 310 is also the minimum distance.

[0185] 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.

[0186] 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.

[0187] It can be understood that when the movement 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.

[0188] 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.

[0189] The sixth distance may be greater than or equal to 17 mm and less than or equal to 21 mm.

[0190] It is understandable 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, and 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.

[0191] 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.

[0192] It can be understood that a third midpoint is provided between the second inflection point and the third inflection point, and a tenth distance L10 is provided from the third midpoint to the front side surface 312 , and the tenth distance L10 is greater than or equal to 12 mm and less than or equal to 20 mm.

[0193] The tenth distance L10 may be greater than or equal to 15 mm and less than or equal to 17 mm.

[0194] The third center is the length center between the second inflection point and the third inflection point.

[0195] It can be understood 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 from the fourth midpoint to the front side surface 312 is greater than or equal to 15 mm and less than or equal to 25 mm.

[0196] The eleventh distance L11 may be greater than or equal to 18 mm and less than or equal to 21 mm.

[0197] The fourth center is the length center between the third inflection point and the terminal end of the second slot body 120 .

[0198] 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 axis body 210 mentioned above can be referred to. The second groove body 120 extends in an arc with the center of the first axis body 210 as the center and the third radius as the radius, and the third radius is greater than or equal to 10 mm and less than or equal to 30 mm.

[0199] refer to Fig.14 As shown, regarding the movement path of the door body 310:

[0200] 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.

[0201] Among them, the first track 131 and the third track 141 can be concentric arc tracks, and the details can be referred to the relevant content in the embodiment of the utility model; 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, such as 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.

[0202] 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, and 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, which can ensure the smooth opening and closing of the door body 310. The movement trajectory of the first side edge 311 can be referred to Fig.14 Middle trajectory line N1.

[0203] 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 2 mm. If the first preset distance is less than or equal to 1 mm, the maximum distance that the third side edge of the door seal moves backward is 1 mm, 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 due to extrusion is small, which can ensure that the door seal 320 is smoothly separated from the box body 410, and avoid jamming of the door seal 320 and the box body 410. The movement trajectory of the third side edge 321 can be referred to Fig.14 Middle trajectory line N3.

[0204] The above-mentioned inside and outside can be understood as the direction away from the door body 310 along the left and right direction is the outside, and the direction close to the door body 310 along the left and right direction or the position inside the door body 310 is the inside.

[0205] The first opening angle may 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 may be set to 20° to 30°.

[0206] It is understandable that, between the door closing position and the first opening angle, the third side edge 321 first moves backward, then moves forward, then moves backward, and then moves forward. The movement trajectory of the third side edge 321 is affected by the movement trajectory of the first shaft body 210 and the second shaft body 220. The third side edge 321 adjusts its position back and forth in the front-to-back direction to reduce the distance the third side edge 321 moves backward and reduce the degree to which the third side edge 321 is squeezed.

[0207] It can be understood that when the door body 310 moves from the closed position to the first preset angle, the third side edge 321 moves backward, and 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 bears the extrusion force, ensuring that the door body 310 can be opened and closed stably and smoothly. For example, the first preset angle is greater than or equal to 4° and less than or equal to 7°.

[0208] It can be 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 moves backward, and the second preset angle is greater than 10° and less than or equal to 16°. Between the first preset angle and the second preset angle, the third side edge 321 reciprocates in the front-to-back direction. When the door body 310 is opened to 7° to 10°, the third side edge 321 moves forward, and when the door body 310 is opened to 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.

[0209] 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.

[0210] 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 trajectory 132 in the first groove 110, and the second axis 220 moves along the fourth trajectory 142 in the second groove 120. The second trajectory 132 is separated from the fourth trajectory 142, and the third side edge 321 moves forward by a second preset distance, which 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.

[0211] 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.

[0212] 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.

[0213] When the door body 310 is connected to the cabinet plate 330, the movement path of the cabinet plate 330 is:

[0214] 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. Fig.14 Middle trajectory line N2.

[0215] In the case where “the first shaft 210 moves along the first trajectory 131 relative to the first groove 110, the second shaft 220 moves along the third trajectory 141 relative to the second groove 120, and both the first trajectory 131 and the third trajectory 141 are arc trajectories”, the movement trajectory of the second side edge 331 of the cabinet panel 330 is described.

[0216] It is understandable that, from the closed position to the first open angle, the second side edge 331 moves outwardly in the left-right direction by a third preset distance relative to the initial position of the second side edge 331, and the third preset distance is less than or equal to 1.5 mm. In the closed position, when the second side edge 331 of the cabinet panel 330 is 3 mm to 4 mm away from the adjacent environmental structure 500, the second side edge 331 of the cabinet panel 330 will not interfere with the adjacent environmental structure 500, and is suitable for the installation of the embedded cabinet panel 330.

[0217] It is understandable that the third preset distance increases first and then decreases when the door body 310 moves from the closed position to the first opening angle. In the initial stage of opening the door, the distance that the second side edge 331 moves outward is relatively large, and the distance that the second side edge 331 moves outward does not increase with the opening angle of the door body 310. In the initial stage of opening the door, the movement speed of the door body 310 is relatively low, and even if the gap between the second side edge 331 and the adjacent environmental structure 500 is relatively small, there will be no interference or collision due to factors such as door body vibration, and the door body 310 will open more smoothly.

[0218] It is understandable 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 up to 1 mm to 1.5 mm.

[0219] 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-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 opened smoothly.

[0220] 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 relatively thin 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.

[0221] Regarding the relationship between the trajectory of the first axis and the tangent of the trajectory of the second axis:

[0222] 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°, etc., 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.

[0223] 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.

[0224] The angles between the tangent lines of the third track and the tangent lines of the fourth track and the front side surface of the door body are less than or equal to 65°.

[0225] During the opening process of the door body 300, the angle between the tangent of the third trajectory 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 trajectory and the front side surface of the door body can be specifically 65°, 60°, 55°, 50° or 45°, etc., and the angle between the tangent of the fourth trajectory and the front side surface of the door body is less than or equal to 45°, for example, the angle between the tangent of the fourth trajectory and the front side surface of the door body 300 can be specifically 45°, 40°, 30°, 27°, 26° or 20°, etc.

[0226] The angle between the tangent of the end of the fifth track close to the fourth track and the front side of the door body is less than or equal to 30°, specifically 30°, 20°, 19° or 15°, etc., and the angle between the tangent of the other end of the fifth track away from the fourth track and the front side 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 of the door body is reduced, that is, the second slot body 120 has a tendency to tilt toward the first slot body 110, thereby reducing the spacing between the first slot body 110 and the second slot body 120, reducing the installation distance of the first slot body 110 and the second slot 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.

[0227] About the angle between the first trajectory and the third trajectory:

[0228] The angle between the tangent of the first trajectory and the tangent of the third trajectory gradually increases.

[0229] 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°, and can be 15°, 20°, 25°, 35° or 45°, etc. 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°.

[0230] About the angle between the second trajectory and the fourth trajectory:

[0231] The angle between the tangent line of the second track and the tangent line of the fourth track increases first and then decreases.

[0232] 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 specifically 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°.

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

[0234] 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 be specifically 25°, 30°, 35°, 45° or 55°, etc. 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 be specifically 9°, 8°, 6°, 5°, 1°, or even 0°.

[0235] About the angle between the center line of the first axis and the second axis and the front side:

[0236] 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.

[0237] During the first opening angle, the angle between the axis line of the first shaft body 210 and the second shaft body 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 line of the first shaft body 210 and the second shaft body 220 and the front side surface of the door body 300 is less than or equal to 20°, and can be specifically 20°, 19°, 17°, 15° or 10°.

[0238] 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°, and can be 45°, 40°, 35°, 30° or 20°.

[0239] During the third opening angle, the angle between the axis connecting the first axis 210 and the second axis 220 and the front side surface of the door body 300 is greater than or equal to 90°, and can be specifically 90°, 95°, 100° or 105°.

[0240] 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 .

[0241] 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, thereby realizing an ultra-thin door body.

[0242] When the door body 310 is connected to the cabinet plate 330 , an embedded device can be installed.

[0243] The door assembly can be installed in a box 410 with a storage function, as well as other electrical equipment, to achieve the installation of embedded equipment.

[0244] The third embodiment of the utility model refers 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 via the first hinge 100 and the second hinge 200.

[0245] The refrigeration device 400 may be a refrigerator, an ice chest, a refrigerator, a freezer, a wine cabinet, or other equipment having storage and refrigeration functions.

[0246] In combination with the above, an embodiment of the utility model is described. The refrigeration device 400 includes a box body 410 and a door assembly. The box body 410 is provided with a storage space inside, wherein the storage space has an opening, and the door body 310 is used to open and close the opening. The hinge assembly is arranged on the pivot side of the box body 410, and pivotally connects the box body 410 and the door body 310. The hinge assembly includes a first hinge 100 and a second hinge 200. The first hinge 100 is arranged on one of the box body 410 and the door body 310, and the second hinge 200 is arranged 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.

[0247] 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, 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.

[0248] 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.

[0249] During the above-mentioned movement of the hinge assembly, the first side edge 311 of the door body 310 is within a vertical distance of 3 mm in the left-right direction relative to the outer edge of the box body 410, and the entire movement trajectory of the first side edge 311 is a movement backward and inward relative to the initial point of the first side edge 311, and the first side edge 311 is a curved arc motion; more specifically, it rotates around 0 to 25° with a fixed center, moves in an elliptical arc at around 25° to 70°, and then rotates around 30° with a fixed center; and the entire movement trajectory is on the right side of the initial point.

[0250] When the front side of the door body 310 is connected to the cabinet plate 330, the second side edge 331 of the cabinet plate 330 will exceed the initial position of the second side edge 331 during the 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 is mainly backward movement relative to the initial position of the second side edge 331, specifically, first to the left rear, then to the right rear; more specifically, it is a fixed-center rotation of about 0 to 25°, an elliptical arc movement of about 25° to 70°, and then a fixed-center rotation of 30°; the entire movement trajectory exceeds the initial position of the second side edge 331 by at most 2mm to the left. The second side edge 331 of the cabinet plate 330 exceeds the first side edge 311 of the door body 310 and the outer side surface of the box body 410.

[0251] The third side edge 321 of the door seal 320 is located between the box body 410 and the door body 310, and 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 is a fixed-center rotation of about 0 to 25°, an elliptical arc motion of about 25° to 70°, and a fixed-center rotation of the last 30°; and the entire movement trajectory does not exceed 2 mm behind the initial point.

[0252] The refrigeration device 400 of the embodiment of the utility model can solve the problem that the door opening of the embedded refrigeration device 400 exceeds the reference plane too much and touches the adjacent cabinet; the door body 310 can be made thinner, and the front side of the door body 310 can be hung with a cabinet board 330. The above-mentioned hinge assembly can also be used in the door assembly scenario where the cabinet board 330 is not hung, in which case the front side of the door assembly is flush with the front side of the adjacent cabinet.

[0253] In some cases, the first slot body 110 includes a curved slot and a straight slot, and the second slot body 120 includes a curved slot with different curvatures. The notch direction of the second slot body 120 faces the front side of the door body, and the first slot body 110 is within the notch direction of the second slot body 120, and the notch direction of the first slot body 110 also faces the front side of the door body.

[0254] The front-to-back distance difference between the first shaft body 210 and the second shaft body 220 is 0-10 mm; the maximum distance between the first groove body 110 and the second groove body 120 in the front-to-back direction is between 15-35 mm, and the thickness of the door body 310 is between 15-35 mm;

[0255] In the closed position, the first axis 210 is located in the first slot 110, and the second axis 220 is located in the second slot 120. A first gap is reserved from the first axis 210 to the starting end of the first slot 110, and a second gap is reserved from the second axis 220 to the starting end of the second slot 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°.

[0256] When the first groove body 110 includes the first groove portion 111 and the 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 the 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 the 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 the fifth distance L5, and the fifth distance L5 is greater than or equal to 4 mm and less than or equal to 5 mm.

[0257] 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.

[0258] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements 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 should be included in the scope of the claims of the present invention.

Claims

1. A door assembly, characterized in that: include: The door body is provided with a first slot body and a second slot body, wherein the first slot body and the second slot body are fixed to a hinged side of the door body, and the first slot body is located at a front side of the second slot body; The second hinge is provided with a first shaft body and a second shaft body, the first shaft body is inserted in the first groove body and is suitable for moving along a first trajectory in the first groove body, the second shaft body is inserted in the second groove body and moves along a third trajectory in the second groove body, so that the door body moves from a closed position to a first open angle, the starting end of the first trajectory and the starting end of the third trajectory are close to the front side surface of the door body, in the process of moving along the first trajectory, the distance from the center of the first shaft body to the front side surface increases from a first distance to a second distance, the first distance is greater than or equal to 3mm and less than or equal to 7.8mm, the second distance is greater than or equal to 8mm and less than or equal to 13mm, in the process of moving along the third trajectory, the distance from the center of the second shaft body to the front side surface increases from the third distance to a fourth distance, the third distance is greater than or equal to 3mm and less than or equal to 7mm, and the fourth distance is greater than or equal to 13mm and less than or equal to 18mm.

2. The door assembly according to claim 1, characterized in that The first track and the third track both have a first center as a circle center, the first track has a first radius as a radius, and the third track has a second radius as a radius, and the second radius is greater than the first radius.

3. The door assembly according to claim 2, characterized in that The first radius is greater than or equal to 5 mm, and the second radius is greater than or equal to 20 mm.

4. The door assembly according to claim 1, characterized in that The first opening angle is greater than or equal to 10° and less than or equal to 50°.

5. The door assembly according to claim 1, characterized in that At the midpoint of the first trajectory, the distance from the center of the first shaft to the front side surface is greater than or equal to 7 mm and less than or equal to 10 mm; And / or, at the midpoint of the third trajectory, the distance from the center of the second shaft to the front side surface is greater than or equal to 9 mm and less than or equal to 12 mm.

6. The door assembly according to claim 1, characterized in that The first distance is greater than or equal to 6 mm and less than or equal to 7 mm, and the second distance is greater than or equal to 8 mm and less than or equal to 10 mm; and / or, The third distance is greater than or equal to 5 mm and less than or equal to 6 mm, and the fourth distance is greater than or equal to 14 mm and less than or equal to 16 mm.

7. The door assembly according to claim 1, characterized in that The first shaft body is inserted in the first groove body and is suitable for moving along a second trajectory in the first groove body, the second trajectory is connected to the terminal end of the first trajectory, the second shaft body is inserted in the second groove body and moves along a fourth trajectory in the second groove body, the fourth trajectory is connected to the terminal end of the third trajectory, so that the door body moves from the first opening angle to the second opening angle, in the process of moving along the second trajectory, the distance from the center of the first shaft body to the front side surface decreases from the second distance to the fifth distance, and the fifth distance is greater than or equal to 6 mm and less than or equal to 13 mm, in the process of moving along the fourth trajectory, the distance from the center of the second shaft body to the front side surface increases from the fourth distance to the sixth distance, and the sixth distance is greater than or equal to 18 mm and less than or equal to 23 mm.

8. The door assembly according to claim 7, characterized in that The second trajectory extends along a straight line or along a second elliptical trajectory, and the fourth trajectory extends along a first elliptical trajectory.

9. The door assembly according to claim 7, characterized in that The second opening angle is greater than or equal to 60° and less than or equal to 95°.

10. The door assembly according to claim 7, characterized in that At the midpoint of the second trajectory, the distance from the center of the first shaft to the front side surface is greater than or equal to 7 mm and less than or equal to 9 mm; And / or, at the midpoint of the fourth trajectory, the distance from the center of the second shaft to the front side surface is greater than or equal to 16 mm and less than or equal to 20 mm.

11. The door assembly according to claim 7, characterized in that The first shaft body is inserted in the first groove body and is suitable for rotating in the first groove body, the second shaft body is inserted in the second groove body and moves along a fifth trajectory in the second groove body, the fifth trajectory is connected to the terminal end of the fourth trajectory, so that the door body moves from the second opening angle to the third opening angle, the third opening angle is greater than the second opening angle, the distance from the center of the first shaft body to the front side surface is between the second distance and the fifth distance, and in the process of moving along the fifth trajectory, the distance from the center of the second shaft body to the front side surface increases from the sixth distance to the seventh distance, and the seventh distance is greater than or equal to 18 mm and less than or equal to 30 mm.

12. The door assembly according to claim 11, characterized in that The second shaft body rotates around the center line of the first shaft body along the fifth trajectory at a third radius, and the third radius is equal to the distance between the terminal end of the second trajectory and the terminal end of the fourth trajectory.

13. The door assembly according to claim 12, characterized in that The third radius is greater than or equal to 10 mm and less than or equal to 30 mm.

14. A refrigeration device, characterized in that: The invention comprises a box body and the door assembly according to any one of claims 1 to 13, wherein the box body is provided with the second hinge, and the box body is hinged to the door body.

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