Box body assembly and refrigeration device

Abstract

To mitigate a problem that a box body is pressed or a side surface of a box body assembly is exceeded while opening a door in a conventional technology.SOLUTION: The present application discloses a box assembly and a refrigeration device, comprising: a box body; a door closing an opening of the box body; and a hinge assembly. The door has, on a pivot side: an inner edge; an outer edge; a first reference plane passing through the inner edge and parallel to a plane where the opening is located; and a second reference plane passing through the outer edge and perpendicular to the plane where the opening is located. During the door is opened from in a closed state into a state of being open at a first angle, the inner edge moves to a side facing the opening of the second reference plane, the outer edge moves to the first reference plane, and when t is a thickness of the door, a curvature radius of an inner edge trajectory is equal to or larger than 100t, a distance of the inner edge trajectory beyond a side facing the opening of the first reference plane is equal to or shorter than a first distance, a curvature radius of an outer edge trajectory is equal to or larger than 5t, and a distance of the outer edge trajectory beyond a side opposite to the opening of the second reference plane is equal to or shorter than a second distance.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application with the application number 2021101793640 and the invention title "Cabinet Assembly" filed on February 9, 2021, the priority of a Chinese patent application with the application number 2021104371142 and the invention title "Cabinet Assembly and Refrigeration Device" filed on April 22, 2021, the priority of a Chinese patent application with the application number 2021104382787 and the invention title "Cabinet Assembly and Refrigeration Device" filed on April 22, 2021, the priority of a Chinese patent application with the application number 2021208440787 and the invention title "Cabinet Assembly and Refrigeration Device" filed on April 22, 2021, the priority of a Chinese patent application with the application number 2021208443323 and the invention title "Cabinet Assembly and Refrigeration Device" filed on April 22, 2021, the priority of a Chinese patent application with the application number 2021104382791 and the invention title "Cabinet Assembly and Refrigeration Device" filed on April 22, 2021, the priority of a Chinese patent application with the application number 2021208440772 and the invention title "Cabinet Assembly and Refrigeration Device" filed on April 22, 2021, the priority of a Chinese patent application with the application number 2021104371072 and the invention title "Cabinet Assembly and Refrigeration Device" filed on April 22, 2021, and the priority of a Chinese patent application with the application number 202120844361X and the invention title "Cabinet Assembly and Refrigeration Device" filed on April 22, 2021, and all of their contents are incorporated herein by reference.

[0002] This application relates to a cabinet assembly and a refrigeration device.

Background Art

[0003] In a cabinet assembly having a door and a cabinet, when the door is opened with respect to the cabinet, the door may press against the cabinet, and the door may also extend beyond the side surface of the cabinet assembly. This may lead to problems such as cabinet damage and interference with the installation environment of the cabinet assembly. For example, when installed embedded, there is a risk that the door portion extending beyond the side surface of the cabinet assembly may interfere with the embedded wall.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present application provides a cabinet assembly to solve the problems of pressing against the cabinet or extending beyond the side surface of the cabinet assembly during the process of opening the door in the prior art.

Means for Solving the Problems

[0005] To solve the above technical problems, the present application provides a cabinet for forming a storage space having an opening, a door for closing the opening, and a hinge assembly provided to pivotally connect the cabinet and the door on the pivot side of the cabinet, wherein the door has an inner edge and an outer edge on the pivot side, and further, a first reference plane passing through the inner edge when the door is in the closed state and parallel to the plane where the opening is located, and a second reference plane passing through the outer edge when the door is in the closed state and perpendicular to the plane where the opening is located are provided. The first reference plane and the second reference plane are stationary with respect to the cabinet during the opening process of the door with respect to the cabinet. The hinge assembly is for forming a first hinge joint and a second hinge joint, the second hinge joint is provided to be farther from the outer edge than the first hinge joint, and in the process of the door being opened relative to the box body under the action of the hinge assembly, the door has a first movement direction relative to the box body at the first hinge joint and has a second movement direction relative to the box body at the second hinge joint. The first movement direction and the second movement direction respectively have a first included angle and a second included angle with the first reference plane. When the first movement direction is provided to be away from the first reference plane, the first included angle is represented in a positive number form. When the first movement direction is provided to be away from the second reference plane, the absolute value of the first included angle is less than 90 degrees. When the second movement direction is provided to be away from the second reference plane, the second included angle is represented in a positive number form. When the second movement direction is provided to be away from the second reference plane, the absolute value of the second included angle is less than 90 degrees. In the process of the door being opened from the closed state to the first opening angle, the second included angle is represented in the positive number form and is less than 90 degrees, the first included angle decreases gradually from a first initial angle represented in the positive number form and less than 90 degrees to a first end angle, and the box body assembly is provided in which the difference between the second included angle and the first included angle at the same actual opening angle of the door relative to the box body gradually becomes larger.

[0006] In order to solve the above technical problems, the present application further provides a refrigeration device including the above box body assembly.

Effect of the Invention

[0007] Analyzing the box body assembly of the present application from the angle of the kinematic relationship, the movement of the door relative to the box body corresponding to the movement trends of the two hinge joints includes rotation and translation. Among them, the translation has a tendency to be away from the first reference plane and the second reference plane, and the tendency of the door to press against the box body or exceed the side surface of the box body assembly during rotation will be offset. Therefore, the door assembly of the present application can realize that the door does not press against the box body excessively or exceed the side surface of the box body assembly excessively.

Brief Description of the Drawings

[0008] To more clearly explain the technical means in the embodiments of the present application, the drawings necessary for describing the embodiments are briefly described below. Of course, the drawings described below are merely some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0009]

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Mode for Carrying Out the Invention

[0010] Refer to FIG. 1, which is a schematic diagram of the structure of the first embodiment of the box assembly of the present application. The box assembly 100 of this embodiment includes a box body 11, a door 12, and a hinge assembly 13. The box body 11 is used to form a storage space with an opening, the door 12 is used to close the opening, the hinge assembly 13 is provided to pivotally connect the box body 11 and the door 12 on the pivot side of the box body 11, and the door 12 can be opened and closed with respect to the box body 11 under the action of the hinge assembly 13.

[0011] Refer to FIG. 1, which is a schematic diagram of the structure of the first embodiment of the box assembly of the present application. The box assembly 100 of this embodiment includes a box body 11, a door 12, and a hinge assembly 13. The box body 11 is used to form a storage space with an opening, the door 12 is used to close the opening, the hinge assembly 13 is provided to pivotally connect the box body 11 and the door 12 on the pivot side of the box body 11, and the door 12 can be opened and closed with respect to the box body 11 under the action of the hinge assembly 13.

[0012] There are various types of hinge assemblies that achieve the relative rotation between the door and the box body. By installing the hinge assembly, the relative motion relationship between the door and the box body is determined. In the prior art box body assembly 900, as shown in FIG. 2 (FIG. 2 is a schematic diagram of the motion relationship of the door with respect to the box body in the conventional box body assembly), when the door 92 is opened to a predetermined angle, problems such as the door 92 pressing against the box body 91 or exceeding the side surface of the box body assembly 900 may occur. The side surface of the box body assembly 900 may be the side surface of the box body 91 or the side surface of the door 92 when it is in the closed state. Needless to say, the hinge assembly 93 in the prior art cannot solve the technical problems of the present application.

[0013] In the present application, by limiting the movement trajectory of the edge on the door, problems such as the door pressing against the box body or exceeding the side surface of the box body assembly are alleviated. Based on the calculation principle of relative motion, the relative motion relationship between the door and the box body can be determined by the movement trajectory of the edge, and then the movement trajectory of the fixed point on the box body or the door can be determined. Based on the movement trajectory of the fixed point, the hinge assembly can then be inversely estimated and designed. Therefore, it can be realized that all hinge assemblies with the edge movement trajectory in the present application are included within the protection scope of the present application.

[0014] Specifically, referring to FIGS. 3 and 4, FIG. 3 is a schematic diagram of the movement trajectory of the edge in the first embodiment of the box body assembly shown in FIG. 1, and FIG. 4 is a schematic diagram of the opening angle of the door with respect to the box body and the movement trajectory of the edge in the first embodiment of the box body assembly shown in FIG. 1.

[0015] In this embodiment, the door 12 has an inner edge 121 and an outer edge 122 on the pivot side. When the door 12 is in the closed state with respect to the box body 11, the inner edge 121 is closer to the box body 11 than the outer edge 122. In this embodiment, a first reference plane X and a second reference plane Y are further defined. The first reference plane X passes through the inner edge 121 when in the closed state and is parallel to the plane where the opening is located. The second reference plane Y passes through the outer edge 122 when in the closed state and is perpendicular to the plane where the opening is located.

[0016] In the process that the door 12 is opened from the closed state to the first opening angle with respect to the box body 11 under the action of the hinge assembly 13, the inner edge 121 moves along the first inner edge locus A2B2 toward the side opening to the second reference plane Y, and the outer edge 122 moves along the first outer edge locus A1B1 to the first reference plane X. The first reference plane X and the second reference plane Y are fixed reference planes without moving along with the movement of the door 12. Under the pivotal connection relationship between the door 12 and the box body 11, in the process that the door 12 is opened, the final movement direction of the inner edge 121 with respect to the second reference plane Y and the final movement direction of the outer edge 122 with respect to the first reference plane X will surely be the above directions.

[0017] Furthermore, in the movement of the outer edge 122 and the inner edge 121 in their respective directions, the curvature radius of the first outer edge locus A1B1 is not smaller than 5t, and the distance exceeding the side opposite to the opening of the second reference plane Y is not larger than the first predetermined distance d1. The curvature radius of the first inner edge locus A2B2 is not smaller than 100t, and the distance exceeding the side toward the opening of the first reference plane X is not larger than the second predetermined distance d2, where t is the thickness of the door.

[0018] In this embodiment, by limiting the curvature radius of the movement locus and the distance that the movement locus can exceed the reference plane, it is ensured that the edge moves stably without exceeding the predetermined range. Here, specifically, the minimum values of the curvature radius of the first outer edge locus A1B1 and the curvature radius of the first inner edge locus A2B2 are limited. That is, when this minimum value is selected as the curvature radius, it can be ensured that the door 12 does not press the box body 11 too hard or excessively exceed the side surface of the box body assembly. Also, when the curvature radius is selected as infinity, the locus becomes a straight line. When both of the two loci become straight lines, correspondingly, the door 12 can be opened up to 90 degrees at most with respect to the box body 11.

[0019] When limiting the curvature radius as above, with the door thickness t as the reference standard, the curvature radius of the first outer edge locus A1B1 is not smaller than 5t, and the curvature radius of the first inner edge locus A2B2 is not smaller than 100t. The reason is that the degree of movement when the door 12 is opened with respect to the box body 11 depends on the door thickness t. Needless to say, the thicker the door 12 is, the larger the curvature radius of the movement locus is.

[0020] By the related limitation of the first predetermined distance d1, the degree to which the outer edge 122 can exceed the side surface of the box assembly 100 is determined. In actual applications, it is allowed that the outer edge 122 exceeds the side surface of the box assembly to a certain extent. For example, when the box assembly is embedded and used, there is a predetermined gap between the box body 11 and the wall for embedding it, and this gap allows the outer edge 122 to exceed the side surface of the box assembly 100 to a certain extent.

[0021] Similarly, by the related limitation of the second predetermined distance d2, the degree to which the inner edge 121 can press against the box body 11 is determined. In actual applications, it is allowed that the inner edge 121 presses against the box body 11 to a certain extent. For example, if a deformable door seal is installed on the box body 11, a certain degree of pressing of the box body 11 by the inner edge 121 may be ignored.

[0022] In this embodiment, the first predetermined distance d1 may be set to 3 mm, and the second predetermined distance d2 may be set to 1.5 mm.

[0023] Generally speaking, in this embodiment, when the door 12 is opened from the closed state to the first opening angle with respect to the box body 11 under the action of the hinge assembly 13, the inner edge 121 moves along the first inner edge locus A2B2, and the outer edge 122 moves along the first outer edge locus A1B1. Here, both the radius of curvature of the first inner edge locus A2B2 and the first outer edge locus A1B1, and the distance relationship with the first reference plane X and the second reference plane Y have certain characteristics. The door 12 moves along this locus, thereby reducing the situation that the door 12 presses against the box body 11 or exceeds the side surface of the box assembly 100, and in severe cases, it can be avoided.

[0024] Furthermore, in this embodiment, the end point B2 of the first inner edge locus A2B2 is on the first reference plane X, or is on the side opposite to the opening of the first reference plane X and the distance to the first reference plane X is not greater than 0.058t. The end point B1 of the first outer edge locus A1B1 is on the second reference plane Y, or is on the side facing the opening of the second reference plane Y and the distance to the second reference plane Y is not greater than 0.135t.

[0025] That is, after the door 12 is opened to the first opening angle, the inner edge 121 of the door 12 will not press against the box body 11 or move away from the box body 11 excessively. The outer edge 122 will not exceed the side surface of the box body assembly 100 or move excessively toward the side facing the opening of the second reference plane Y. Thereby, no significant displacement problem occurs when the door 12 is opened, and the movement of the door 12 becomes more stable.

[0026] In this embodiment, when the edge of the door 12 moves along the first inner edge locus A2B2 and the first outer edge locus A1B1 and the door 12 is opened to 90 degrees, the door 12 may not be able to continue opening. However, the maximum opening angle of the door 12 generally needs to be greater than 90 degrees. Therefore, after the edge of the door 12 moves along the first inner edge locus A2B2 and the first outer edge locus A1B1 and the door 12 is opened less than 90 degrees, another movement locus is adopted so that the door 12 can be opened greater than 90 degrees subsequently. When the door 12 is opened less than 90 degrees, the length of the first inner edge locus A2B2 is greater than the length of the first outer edge locus A1B1, and the ratio of the length of the first inner edge locus A2B2 to the length of the first outer edge locus A1B1 is 3.5 - 4.5.

[0027] As described above, after the door 12 is opened to the first opening angle, it may move along another locus. In this embodiment, in the process of the door 12 being opened from the first opening angle to the second opening angle with respect to the box body 11 under the action of the hinge assembly 13, the inner edge 121 moves along the second inner edge locus B2C2 toward the side facing the opening of the second reference plane Y and the side opposite to the opening of the first reference plane X, and the outer edge 122 moves along the second outer edge locus B1C1 toward the first reference plane X.

[0028] The inner edge 121 begins to move towards the side facing the opening of the second reference plane Y. The radius of curvature of the second inner edge locus B2C2, which is the movement locus of the inner edge 121, gradually decreases. The end point C2 of the second inner edge locus B2C2 is on the side opposite to the opening of the first reference plane X, and the distance to the first reference plane is not less than 0.3t. Thereby, there is space for the door 12 to open to a larger angle.

[0029] In this process, due to the design of the first outer edge locus A1B1, the radius of curvature of the second outer edge locus B1C1 is not less than 5t, and the distance exceeding the side opposite to the opening of the second reference plane Y is not greater than the first predetermined distance d1.

[0030] According to the characteristics of the above locus, during the process of the door 12 being opened from the first opening angle to the second opening angle, the door 12 does not press against the box body 11 or excessively exceed the side surface of the box body assembly.

[0031] The door 12 can be further opened from the second opening angle to the third opening angle continuously with respect to the box body 11 under the action of the hinge assembly 13. During this process, the inner edge 121 moves along the third inner edge locus C2D2 to the side opposite to the opening of the first reference plane X, and the outer edge 122 moves along the third outer edge locus C1D1 to the side facing the opening of the second reference plane Y. The locus of this movement direction corresponds to a larger opening angle of the door 12.

[0032] The third inner edge locus C2D2 and the third outer edge locus C1D1 are specifically concentrically arranged arcs. The radius of curvature of the third inner edge locus C2D2 is 0.55t - 0.67t, and the radius of curvature of the third outer edge locus C1D1 is 0.45t - 0.55t.

[0033] After the edge of the door 12 moves along the first inner edge locus A2B2 and the first outer edge locus A1B1, in order to achieve a larger door opening angle, it may directly move along the third inner edge locus C2D2 and the third outer edge locus C1D1, thereby solving the problem of pressing against the box body 11 or exceeding the side surface of the box body assembly.

[0034] However, after designing the hinge assembly 13 to add the third trajectory to the first trajectory, when the door 12 realizes rotation through the hinge assembly 13, a sway phenomenon is likely to occur during the rotation process. For further optimization and to solve the sway problem, a second trajectory is added between the first trajectory and the third trajectory, thereby making the movement process of the door 12 more stable and smooth.

[0035] Also, considering the design of the hinge assembly 13, setting the ratio of the curvature radius of the third inner edge trajectory C2D2 to the curvature radius of the third outer edge trajectory C1D1 to 1.22 can prevent interference problems from occurring in the structure corresponding to the third trajectory in the hinge assembly 13.

[0036] Specifically, in the design of the three-part trajectory, the first opening angle corresponding to the first trajectory is 25 degrees to 31 degrees, the second opening angle corresponding to the second trajectory is 57 degrees to 60 degrees, and the third opening angle corresponding to the third trajectory is 122 degrees to 132 degrees.

[0037] The length of the first inner edge trajectory A2B2 is 0.465t, and the length of the first outer edge trajectory A1B1 is 0.115t.

[0038] The second outer edge trajectory B1C1 has a length of 0.2285t, and the second inner edge trajectory B2C2 is provided such that the movement distance of the inner edge 121 on the second inner edge trajectory B2C2 and the rotation angle of the door 12 with respect to the box body satisfy the following formula:

Equation

[0039] The curvature radius of the third inner edge trajectory C2D2 is 0.61t, and the curvature radius of the third outer edge trajectory C1D1 is 0.5t. The centers of the third inner edge trajectory C2D2 and the third outer edge trajectory C1D1 are inside the door 12, the distance to the first reference plane X is 0.6t, and the distance to the second reference plane Y is 0.5t.

[0040] When conducting the actual design, considering issues such as mounting deformation, the reference points can be selected to perform the trajectory design, and a tolerance can be reserved in advance at the edge of the door 12, thereby ensuring that the door 12 does not press against the box body 11 or exceed the side surface of the box body assembly 100.

[0041] As shown in FIGS. 5, 6, and 7, FIG. 5 is a schematic diagram of the movement trajectory of the reference point in the first embodiment of the box body assembly shown in FIG. 1, FIG. 6 is a schematic diagram of the selection range of the inner reference point in the first embodiment of the box body assembly shown in FIG. 1, and FIG. 7 is a schematic diagram of the selection range of the outer reference point in the first embodiment of the box body assembly shown in FIG. 1.

[0042] In this embodiment, an inner reference point R2 installed adjacent to the inner edge 121 and an outer reference point R1 installed adjacent to the outer edge 122 are provided.

[0043] Specifically, the vertical distance from the inner reference point R2 to the first reference plane X is not greater than 0.1t, and the vertical distance from the inner reference point R2 to the second reference plane Y is not greater than 0.1t. That is, the selection range of the inner reference point R2 is a rectangular area with a side length of 0.2t centered on the inner edge 121. Similarly, the vertical distance from the outer reference point R1 to the second reference plane Y is not greater than 0.1t, and the vertical distance from the outer reference point R1 to the third reference plane Z is not greater than 0.1t. That is, the selection range of the outer reference point R1 is a rectangular area with a side length of 0.2t centered on the outer edge 122.

[0044] The inner reference point R2 may be located on the inner edge 121, and the outer reference point R1 may be located on the outer edge 122.

[0045] The trajectory design concept of the inner reference point R2 and the outer reference point R1 is also based on the above trajectory design concept of the inner edge 121 and the outer edge 122. During the process in which the door 12 is opened from the closed state to the first opening angle with respect to the box body 11 under the action of the hinge assembly 13, the inner reference point R2 moves along the first inner reference point trajectory E2F2 toward the side opening to the second reference plane Y, and the outer reference point R1 moves along the first outer reference point trajectory E1F1 toward the first reference plane X.

[0046] All possible features of the first inner reference point locus E2F2 are similar to the first inner edge locus A2B2, and all possible features of the first outer reference point locus E1F1 are similar to the first outer edge locus A1B1. Specific detailed descriptions are omitted.

[0047] To facilitate the design, in this embodiment, both the first inner reference point locus E2F2 and the first outer reference point locus E1F1 are straight lines. Depending on the selected position of the inner reference point R2, the first inner reference point locus E2F2 may be along the first reference plane X or parallel to the first reference plane X. Depending on the selected position of the outer reference point R1, the first outer reference point locus may be along the second reference plane Y or parallel to the second reference plane Y.

[0048] Furthermore, the length of the first inner reference point locus E2F2 is greater than the length of the first outer reference point locus E1F1, and the ratio of the length of the first inner reference point locus E2F2 to the length of the first outer reference point locus E1F1 is 3.5 - 4.5.

[0049] Similarly, corresponding to the inner edge 121 and the outer edge 122, both the inner reference point R2 and the outer reference point R1 can generate the second locus and the third locus. Here, all possible features of the second inner reference point locus F2G2 are similar to the second inner edge locus B2C2, all possible features of the second outer reference point locus F1G1 are similar to the second outer edge locus B1C1, all possible features of the third inner reference point locus G2H2 are similar to the third inner edge locus C2D2, and all possible features of the third outer reference point locus G1H1 are similar to the third outer edge locus C1D1.

[0050] During the process of the door 12 being opened from the first opening angle to the second opening angle with respect to the box body 11 under the action of the hinge assembly 13, the inner reference point R2 moves along the second inner reference point locus F2G2 to the side facing the opening of the second reference plane Y and the side opposite to the opening of the first reference plane X, and the outer reference point R1 moves along the second outer reference point locus F1G1 to the first reference plane X.

[0051] Here, to facilitate the design, the second outer reference point locus F1G1 is a straight line, provided along the second reference plane Y or parallel to the second reference plane Y. The second inner reference point locus F2G2 is provided such that the movement distance of the outer reference point on the second outer reference point locus and the rotation angle of the door 12 satisfy the following formula: [Number] Here, θ1 is the rotation angle, t1 is the movement distance, and θ is the planned angle of 100 degrees - 113 degrees.

[0052] Based on the design principle of relative motion from the trajectory design of the edge of the door 12, various hinge assembly structures can be designed. For example, as shown in FIGS. 8 - 10, FIG. 8 is a schematic diagram of the structure of the second embodiment of the box assembly of the present application, FIG. 9 is a schematic diagram of the hinge shaft structure of the hinge assembly in the second embodiment of the box assembly shown in FIG. 8, and FIG. 10 is a schematic diagram of the hinge groove structure of the hinge assembly in the second embodiment of the box assembly shown in FIG. 8.

[0053] Compared with the first embodiment shown in FIG. 1, this second embodiment is different only in that the structure of the hinge assembly is embodied, so the reference numerals of the first embodiment are continued to be used as reference numerals. The hinge assembly 13 in the box assembly 100 of this embodiment converts the movement trajectory of the edge of the door 12 into the movement trajectories of two fixed points on the door 12 or the box 11, and then designs the corresponding mechanical structure based on the movement trajectories of the two fixed points. The hinge assembly 13 is provided with a first guide mechanism 135 and a second guide mechanism 136 that respectively realize the movement trajectories of the two fixed points, that is, it is designed such that the edge of the door 12 can move along a preset trajectory by the cooperation of the two guide mechanisms.

[0054] In FIGS. 8 - 10, the guide mechanism is a groove - column fitting structure. Obviously, the guide mechanism designed based on the trajectory may also be a connecting rod structure, a groove - column + connecting rod structure, etc.

[0055] The hinge assembly 13 in this embodiment is a two-axis two-groove type, where the two grooves are installed on the door 12 and the two axes are installed on the box body 11. For the same reason, in other embodiments, the two grooves may be installed on the box body 11 and the two axes may be installed on the door 12, or a single-axis single-groove may be installed on the door 12, and correspondingly, a single-axis single-groove may also be installed on the box body 11, or, as described above, the shaft-groove structure on the door 12 and the box body 11 may be converted into a connecting rod structure or a shaft + track slide structure, etc.

[0056] Specifically, the hinge assembly 13 of this embodiment includes a first hinge shaft 131 and a second hinge shaft 132 installed on the box body 11, and a first hinge groove 133 and a second hinge groove 134 installed on the door 12. Here, the first hinge shaft 131 moves in the first hinge groove 133, and the two constitute a first guide mechanism 135. The second hinge shaft 132 moves in the second hinge groove 134, and the two constitute a second guide mechanism 136, thereby realizing the movement trajectory of the door edge shown in FIG. 3, and then solving the problem that the door 12 presses against the box body 11 and the problem of exceeding the side surface of the box body assembly 100.

[0057] During the process of the door 12 being opened, the movement state of the hinge assembly 13 is as shown in FIGS. 11-14. FIG. 11 is a schematic diagram of the state of the hinge assembly when the door is in the closed state with respect to the box body in the second embodiment of the box body assembly shown in FIG. 8. FIG. 12 is a schematic diagram of the state of the hinge assembly when the door is opened to the first opening angle with respect to the box body in the second embodiment of the box body assembly shown in FIG. 8. FIG. 13 is a schematic diagram of the state of the hinge assembly when the door is opened to the second opening angle with respect to the box body in the second embodiment of the box body assembly shown in FIG. 8. FIG. 14 is a schematic diagram of the state of the hinge assembly when the door is opened to the third opening angle with respect to the box body in the second embodiment of the box body assembly shown in FIG. 8.

[0058] In this embodiment, the first hinge groove 133 includes a first groove portion 1331, a second groove portion 1332, and a third groove portion 1333, and the second hinge groove 134 includes a fourth groove portion 1341 and a fifth groove portion 1342.

[0059] When the door 12 is opened from the closed state to the first opening angle with respect to the box body 11, the first hinge shaft 131 moves along the first groove portion 1331, and the second hinge shaft 132 moves along the fourth groove portion 1341, corresponding to realizing the first trajectory in FIG. 3.

[0060] When the door 12 is opened from the first opening angle to the second opening angle with respect to the box body 11, the first hinge shaft 131 moves along the second groove portion 1332, and the second hinge shaft 132 moves along the fifth groove portion 1342, corresponding to realizing the second trajectory in FIG. 3.

[0061] When the door 12 is opened from the second opening angle to the third opening angle with respect to the box body 11, the first hinge shaft 131 moves along the third groove portion 1333, and the second hinge shaft 132 does not generate a position change at the bottom end of the fifth groove portion 1342, corresponding to realizing the third trajectory in FIG. 3.

[0062] Here, the first hinge groove 133 and the second hinge groove 134 tend to move away from each other in the direction towards the first reference plane. The first groove portion 1331 is farther away from one side of the second reference plane Y than the fourth groove portion 1341, and extends towards the first reference plane X and the second reference plane Y. The included angle between the tangent direction of the first groove portion 1331 and the first reference plane X is larger than the included angle between the tangent direction of the fourth groove portion 1341 and the first reference plane X.

[0063] In this embodiment, due to the design of the hinge assembly 13, the door 12 can be opened stably and smoothly with respect to the box body 11, without pressing against the box body 11 or exceeding the side surface of the box body assembly 100, which is convenient for embedded use.

[0064] To sum up, in the present application, different hinge assemblies can be designed correspondingly to correspond to different movement trajectories of the door edge, and all of them can reduce the problems of pressing against the box body or exceeding the side surface of the box body assembly when the door is opened. The above design of the box body assembly can be applied to products such as refrigerators when there are problems such as having a door and pressing against the box body or interference problems when exceeding the box body assembly.

[0065] Yet another embodiment of the present application provides a box assembly. As shown in FIGS. 15 and 16, the third embodiment of the box assembly 10 of the present application includes a box body 110 forming a storage space with an opening, a door 120 for closing the opening, and a hinge assembly 130 provided on the pivot side of the box body 110 and used to pivotally connect the box body 110 and the door 120. That is, the door 120 can be opened and closed with respect to the box body 11 under the action of the hinge assembly 130. Here, the thickness of the door 120 is 2 centimeters or more.

[0066] Here, the door 120 has an inner edge 121 and an outer edge 122 on the pivot side, and the box assembly 10 is provided with a first reference plane 123 and a second reference plane 124. The first reference plane 123 passes through the inner edge 121 when the door 120 is in the closed state and is parallel to the plane where the opening is located. The second reference plane 124 passes through the outer edge 122 when the door 120 is in the closed state and is perpendicular to the plane where the opening is located. The first reference plane 123 and the second reference plane 124 remain stationary with respect to the box body 110 during the process of the door 120 being opened with respect to the box body 110.

[0067] The hinge assembly 130 includes an inner groove body 140 and an outer groove body 150 installed on the door 120, and an inner shaft body 160 and an outer shaft body 170 installed on the box body 110. The inner groove body 140 is on the side away from the second reference plane 124 of the outer groove body 150. Here, the outer groove body 150 and the outer shaft body 170 are fitted to form a first hinge connection point at the axis of the outer shaft body 170, and the inner groove body 140 and the inner shaft body 160 are fitted to form a second hinge connection point at the axis of the inner shaft body 160. Here, the second hinge connection point is provided to be farther from the outer edge 122 than the first hinge connection point (in the present application, it means that the orthographic projection of the first hinge connection point on the perpendicular line from the second hinge connection point to the outer edge 122 is located between the second hinge connection point and the outer edge 122).

[0068] In the process of the door 120 being opened with respect to the box body 110 under the action of the hinge assembly 130, the door 120 has a first movement direction with respect to the box body 110 at the first hinge connection point and a second movement direction with respect to the box body 110 at the second hinge connection point. There is a first included angle θ11 between the first movement direction and the first reference plane 123, and a second included angle θ12 between the second movement direction and the first reference plane 123. Here, when the first included angle θ11 and the second included angle θ12 are provided such that the first movement direction is away from the first reference plane, the first included angle θ11 is a positive number. When the first movement direction is provided to be away from the second reference plane 124, the absolute value of the first included angle θ11 is less than 90 degrees, that is, when the first movement direction approaches the first reference plane, the first included angle θ11 is a negative number. When the first movement direction approaches the second reference plane, the absolute value of the first included angle θ11 is greater than 90 degrees. When the second movement direction is provided to be away from the second reference plane 124, the second included angle θ12 is a positive number. When the second movement direction is provided to be away from the second reference plane 124, the absolute value of the second included angle θ12 is less than 90 degrees, but when the second movement direction approaches the second reference plane 124, the second included angle is a negative number. When the second movement direction approaches the second reference plane 124, the absolute value of the second included angle is defined to be greater than 90 degrees.

[0069] Referring to FIGS. 17 and 18 simultaneously, in the process of the door 120 rotating from the closed state to being opened to the first opening angle, the shaft body moves along the groove body in the first part of the trajectory. In this process, the second included angle θ12 is a positive number and less than 90 degrees, and the first included angle θ11 gradually decreases from the first initial angle, which is a positive number and less than 90 degrees, to the first end angle. The difference between the second included angle θ12 and the first included angle θ11 at the same actual opening angle of the door 120 with respect to the box body 110 gradually increases. Analyzing from the perspective of the angles of the motion relationship, the motion of the door with respect to the box body corresponding to the above motion trends of the two hinge connection points includes rotation and translation. Among them, the translation has a tendency to move away from the first reference plane and the second reference plane, and the tendency of the door to press against the box body or exceed the side surface of the box body assembly during rotation is offset. Therefore, the door assembly of the present application can achieve that the door does not excessively press against the box body or exceed the side surface of the box body assembly.

[0070] Based on the above-mentioned motion design principle for the first hinge joint and the second hinge joint, if it is desired to open to a large angle, the trajectories of the first hinge joint and the second hinge joint are long, and correspondingly, the required groove body to be installed is also large, which is likely to result in large hinge assembly dimensions and high production costs. Therefore, the motion trajectories of the hinge joints are designed by dividing them into multiple parts, that is, the first hinge joint and the second hinge joint of the above design concept are adopted in the first opening angle part, and as the opening angle increases, other hinge joint motion design concepts are further combined. Therefore, in this embodiment, the first opening angle is provided between 25 degrees and 31 degrees, and it may be 25 degrees, 27.8 degrees, 28 degrees, 31 degrees, etc.

[0071] Specifically, in this embodiment, the first included angle θ11 gradually decreases from the first initial angle to the first end angle, the difference between the second included angle θ12 and the first included angle θ11 gradually increases, and as the door is opened to the first opening angle, the motion directions of the door at the two hinge joints are on both sides of 45 degrees, so that the longest hinge joint trajectory in the small-sized hinge assembly can be realized. Next, in this embodiment, the range of the first initial angle of the first included angle θ11 is between +55 degrees and +45 degrees, for example, +55 degrees, +50 degrees or +45 degrees, etc., the range of the first end angle is between +1 degree and +11 degrees, for example, +1 degree, +6 or +11 degrees, etc., and the range of the second included angle θ12 is between +78 degrees and +64 degrees, specifically between 73 degrees and 69 degrees, for example, +78 degrees, +71 degrees or +64 degrees, etc. Also, in this process, the change trend of the second included angle θ12 is to first decrease from 73 degrees to 69 degrees, and then increase from 69 degrees to 70 degrees.

[0072] Furthermore, in this embodiment, the inner shaft body 160 and the outer shaft body 170 are located in the box body, the inner groove body 140 and the outer groove body 150 are located on the door, the inner shaft body 160 constitutes the second hinge connection point, and the outer shaft body 170 constitutes the first hinge connection point. The inner shaft body 160 is closer to the inner wall surface of the door 120. When the door 120 rotates from the closed state to the first opening angle, it is obvious that in order to realize the trend of moving away from the wall surface of the door 120, it is necessary to make the movement trajectory of the inner shaft body 160 larger than the movement trajectory of the outer shaft body 170. In this embodiment, the range of the ratio of the movement trajectory length of the inner shaft body 160 with respect to the inner groove body 140 to the movement trajectory length of the outer shaft body 170 with respect to the outer groove body 150 is 1.2 to 1.4, for example, 1.2, 1.3, 1.31 or 1.4, etc. Thereby, the door 120 can rotate counterclockwise along the direction shown in FIG. 16 with respect to the box body 110.

[0073] After the door 120 is opened to the first opening angle, the movement modes of the first hinge connection point and the second hinge connection point may be changed so that the door can be stably opened to a larger angle. Referring to FIGS. 17 to 19, in the process of the door 120 rotating from the first opening angle to the second opening angle, the first included angle θ11 gradually increases from the second initial angle whose absolute value is less than 90 degrees to the second end angle, and the second included angle θ12 gradually increases from the third initial angle which is a positive number and less than 90 degrees to the third end angle. The difference between the second included angle θ12 and the first included angle θ11 at the same actual opening angle of the door 120 with respect to the box body 110 gradually becomes larger at least first.

[0074] Similarly, after the door 120 is opened to the first opening angle with respect to the box body 110, in the process where the difference between the second included angle θ12 and the first included angle θ11 gradually becomes larger, the door 120 has a tendency to move away from the first reference plane with respect to the box body 110, and the distance from the outer shaft body 170 to the inner edge 121 and the outer edge 122 gradually becomes smaller, that is, it corresponds to the fact that the door 120 has a tendency to move away from the second reference plane with respect to the box body 110.

[0075] During the process of opening the door 120, the distances from the outer shaft body 170 to the inner edge 121 and the outer edge 122 gradually decrease. In a mathematical sense, the increase in the projection line of the connecting line between the outer shaft body 170 and the outer edge 122 on the first reference plane 123 and the increase in the projection line of the connecting line between the outer shaft body 170 and the inner edge 121 on the second reference plane 124 can be offset. As can be seen from this, during the process of opening the door 120, it is possible to avoid excessively exceeding the side surface of the box assembly or excessively pressing against the box body 110.

[0076] In this embodiment, the range of the second opening angle is between 57 degrees and 60 degrees, for example, 57 degrees, 59 degrees or 60 degrees, etc. The difference between the second included angle θ12 and the first included angle θ11 at the same actual opening angle of the door 120 with respect to the box body 110 first gradually increases and then gradually decreases, and the range of the actual opening angle of the door 120 with respect to the box body 110 corresponding to the transition position from the gradual increase to the gradual decrease of the difference is between 50 degrees and 60 degrees, for example, 50 degrees, 55 degrees or 60 degrees, etc.

[0077] According to the analysis of the movement trajectory, when the opening angle of the door 120 with respect to the box body 110 is 45 degrees, the pressing degree on the box body 110 and the exceeding degree of the box assembly are large. Therefore, when the door 120 is opened from the closed state to 45 degrees, the door 120 needs to have a tendency to move away from the first reference plane and the second reference plane with respect to the box body 110. Therefore, the difference between the designed second included angle θ12 and the first included angle θ11 gradually increases. However, during the process of continuously opening the door 120, if it continues to move away from the first reference plane and the second reference plane, the situation that the door 120 is excessively separated from the box body 110 and the stability of the door 120 becomes insufficient is likely to occur. Therefore, after 45 degrees, it is necessary to prevent the door 120 from moving away from the first reference plane and the second reference plane, and further control the door 120 so that it does not move away from the box body 110. Therefore, the difference between the second included angle θ12 and the first included angle θ11 is designed to gradually increase and then decrease.

[0078] Also, after the door 120 is opened to 45 degrees, it is a logical situation that the difference between the second included angle θ12 and the first included angle θ11 gradually decreases. Considering the smoothness of the hinge when the door 120 is opened, in this embodiment, the range of the actual opening angle of the door 120 with respect to the box body 110 corresponding to the transition position from the gradual increase to the gradual decrease of the difference is set between 50 degrees and 60 degrees, for example, 50 degrees, 55 degrees or 60 degrees, etc.

[0079] To correspond to the further opening of the door 120, the movement trend of the hinge connection point continues the trend when it is opened to the first opening angle. Here, the first included angle θ11 gradually increases from the second initial angle to the second end angle. The range of the second initial angle is between +1 degree and +11 degrees, for example, +1 degree, +6 degrees or +11 degrees, etc. The range of the second end angle is between +36 degrees and +46 degrees, for example, +36 degrees, +41 degrees or +46 degrees, etc. The change of the second included angle θ12 is that it gradually increases from the third initial angle to the third end angle. The range of the third initial angle is between +65 degrees and +75 degrees, for example, +65 degrees, +70 degrees or +75 degrees, etc. The range of the third end angle is between +108 degrees and +118 degrees, for example, +118 degrees, +123 degrees or +118 degrees, etc. When the door 120 is opened from the first opening angle to the second opening angle, the larger the opening angle, the longer the movement track length of the inner shaft body 160 with respect to the inner groove body 140 than the movement track length of the outer shaft body 170 with respect to the outer groove body 150. The range of the ratio of the two is 2.1 to 2.3, for example, 2.1, 2.16, 2.2 or 2.3, etc. Thereby, the door 120 can rotate counterclockwise along the direction shown in FIG. 16 with respect to the box body 110.

[0080] When designing the hinge assembly of this embodiment, the design of the shaft body and the groove body is mainly considered. To ensure the structural stability, the groove body should not be too close to the edge of the door or the box body. Therefore, in this embodiment, the distance between the axis of the shaft body and the reference plane is further limited. Assuming the thickness of the door 120 (i.e., the length in the parallel direction of the second reference plane 124 of the door 120) is t, during the process of the door 120 being opened from the closed position to the maximum angle with respect to the box body 110 under the action of the hinge assembly 130, the range of the distance between the axis of the inner shaft body 160 and the first reference plane 123 is between 0.75t and 0.77t, for example, 0.75t, 0.76t or 0.77t, etc.; the range of the distance from the axis of the inner shaft body 160 to the second reference plane 124 is between 0.79t and 0.81t, for example, 0.79t, 0.80t or 0.81t, etc.; the range of the distance from the outer shaft body 170 to the first reference plane 123 is between 0.59t and 0.61t, for example, 0.59t, 0.60t or 0.61t, etc.; the range of the distance between the outer shaft body 170 and the second reference plane 124 is between 0.49t and 0.51t, for example, 0.49t, 0.50t or 0.51t, etc.

[0081] During the process of the above-mentioned door being opened from the first opening angle to the second opening angle, the first included angle θ11 gradually increases from the second initial angle whose absolute value is less than 90 degrees to the second end angle, the second included angle θ12 is a positive number and gradually increases from the third initial angle less than 90 degrees to the third end angle, and the difference between the second included angle θ12 and the first included angle θ11 at the same actual opening angle of the door 120 with respect to the box body 110 gradually increases at least first.

[0082] To correspond to the trend that the difference between the second included angle θ12 and the first included angle θ11 gradually increases, the door 120 has a tendency to move away from the first reference plane and the second reference plane with respect to the box body 110. Therefore, the door will not overly press against the box body or exceed the side surface of the box body assembly. Thus, in the motion design of this hinge connection point, the first opening angle may be the door closing angle, and the second opening angle may be any angle. That is, during the process of the door being opened from the closed state, the design of the hinge connection point during the process of directly opening from the first opening angle to the second opening angle can be utilized.

[0083] Referring to FIGS. 16, 17, 19 to 21, in this embodiment, the hinge assembly is further limited from another angle. During the process in which the door 120 is opened from the closed position to the maximum angle with respect to the box body 110 under the action of the hinge assembly 130, the first hinge connection point moves from the starting position to the ending position. Further, a reference point is provided on the door 120. The reference point overlaps with the first hinge connection point and is relatively stationary with respect to the box body 110 during the opening process of the door 120. The reference point has a first perpendicular line to the outer edge 122 and has a first vertical distance D1 along the first perpendicular line to reach the outer edge 122. The reference point has a second perpendicular line to the inner edge 121 and has a second vertical distance D2 along the second perpendicular line to reach the inner edge 121. The first perpendicular line has a third included angle θ13 with respect to the first reference plane 123, and the second perpendicular line has a fourth included angle θ14 with respect to the first reference plane 123.

[0084] Referring to FIGS. 16, 17, 20 and 21, in this embodiment, during the process in which the door 120 rotates with respect to the box body 110 from the closed state to the first opening angle, the first vertical distance D1 and the second vertical distance D2 gradually decrease, the third included angle θ13 gradually decreases within the range of 0 degrees to 90 degrees, and the fourth included angle θ14 gradually increases within the range of 0 degrees to 90 degrees.

[0085] Analyzing from the angle of the movement trajectory, during the opening process of the door 120, the reference point does not change and the third included angle θ13 decreases. Therefore, the outer edge 122 has a tendency to move towards the first reference plane, corresponding to the opening process of the door. Also, since the first vertical distance D1 decreases, the outer edge 122 does not overly move away from the side opposite to the opening of the second reference plane, that is, the door 120 does not overly exceed the side surface of the box body assembly.

[0086] For the same reason, the fourth included angle θ14 increases, that is, the inner edge 121 has a tendency to move away from the second reference plane, corresponding to the opening process of the door. Since the second vertical distance D2 decreases, the inner edge 121 does not overly move towards the opening, that is, the door 120 does not overly press against the box body 110.

[0087] Mathematically speaking, the distance between the reference point and the second reference plane 124 is D1 * cosθ13. Since D1 decreases while cosθ13 increases and they change in opposite directions, the distance that the door 120 exceeds the side surface of the box body 110 (i.e., the second reference plane 124) during the opening process can be reduced. Also, the distance between the reference point and the first reference plane 123 is D2 * sinθ14. Since D2 decreases while sinθ14 increases and they change in opposite directions, the distance that presses against the box body 110 during the opening process of the door 120 can be reduced.

[0088] In this embodiment, the reference point corresponds to the first hinge joint point. To optimize the position settings of the first hinge joint point and the second hinge joint point, the first hinge joint point is installed closer to the second reference plane. Therefore, under the same actual opening angle of the door 120, the first vertical distance D1 is smaller than the second vertical distance D2, and the third included angle θ13 is smaller than the fourth included angle θ14.

[0089] During the opening process of the door, based on the movement direction of the outer edge 122 in this embodiment, since the movement change of the outer edge 122 tends to increase, the change width corresponding to each opening unit angle of the door 120 for the first vertical distance D1 gradually becomes larger. Also, since the movement change of the inner edge 121 tends to decrease, the change width corresponding to each opening unit angle of the door 120 for the second vertical distance D2 gradually becomes smaller.

[0090] Specifically, when designing the hinge assembly of this embodiment, the design of the shaft body and the groove body structure is mainly considered. To ensure the structural stability, the groove body should not be too close to the edge of the door or the box body. Therefore, the first vertical distance D1 gradually decreases from the range between 0.63t and 0.65t (for example, 0.63t, 0.64t, or 0.65t, etc.) to the range between 0.57t and 0.59t (for example, 0.57t, 0.58t, or 0.59t, etc.), and the second vertical distance D2 gradually decreases from the range between 0.78t and 0.80t (for example, 0.78t, 0.79t, or 0.80t, etc.) to the range between 0.59t and 0.61t (for example, 0.59t, 0.60t, or 0.61t, etc.).

[0091] In this embodiment, the third included angle θ13 gradually decreases from a range of 39 degrees to 41 degrees (for example, 39 degrees, 40 degrees, or 41 degrees, etc.) to a range of 35 degrees to 37 degrees (for example, 35 degrees, 36 degrees, or 37 degrees, etc.), and the fourth included angle θ14 gradually increases from a range of 49 degrees to 51 degrees (for example, 49 degrees, 50 degrees, or 51 degrees, etc.) to a range of 79 degrees to 81 degrees (for example, 79 degrees, 80 degrees, or 81 degrees, etc.).

[0092] Referring to FIG. 22 simultaneously, in this embodiment, there is a first product between the first vertical distance D1 and the cosine value of the third included angle θ13. When the door 120 is in the closed state, the cosine value of the first vertical distance D1 and the third included angle θ13 is the first initial product. The box exceeding distance shown in FIG. 20 is the difference between the first product and the first initial product. During the process in which the door 120 rotates from the closed state with respect to the box body 110 to the first opening angle, the difference between the maximum value and the minimum value of the first product is less than 0.1t, for example, 0.1t, 0.05t, or 0.02t, etc. Thereby, the opening process of the door 120 with respect to the box body 110 becomes more stable. Also, the first product is constant or gradually decreases, so that the door 120 does not exceed the side surface of the box body 110 during the process of being opened with respect to the box body 110.

[0093] Referring to FIG. 23 simultaneously, in this embodiment, there is a second product between the second vertical distance D2 and the sine value of the fourth included angle θ14. When the door 120 is in the closed state, the sine value of the second vertical distance D2 and the fourth included angle θ14 is the second initial product. The box pressing distance shown in FIG. 23 is the difference between the second product and the second initial product. During the process in which the door 120 rotates from the closed state with respect to the box body 110 to the first opening angle, the difference between the maximum value and the minimum value of the second product is less than 0.1t, for example, 0.1t, 0.05t, or 0.02t, etc. Thereby, the opening process of the door 120 with respect to the box body 110 becomes more stable. Also, the second product is constant or gradually decreases, so that the door 120 does not excessively press the box body 110 during the process of being opened with respect to the box body 110.

[0094] Referring to FIGS. 17, 19 to 21, in this embodiment, in the process that the door 120 rotates from the first opening angle to the second opening angle with respect to the box body 110, the first vertical distance D1 gradually decreases, the third included angle θ13 gradually decreases within the range of 0 degrees to 90 degrees, the fourth included angle θ14 gradually increases, and exceeds 90 degrees at least within the planned angle range before the second opening angle, the second vertical distance D2 gradually increases within the planned angle range. For the same reason, the distance between the reference point and the second reference plane 124 is D1*cosθ13. As D1 decreases and at the same time cosθ13 increases, changing in the opposite direction, the distance exceeding the side surface of the box body 110 (i.e., the second reference plane 124) during the process of opening the door 120 can be reduced. Also, the distance between the reference point and the first reference plane 123 is D2*sinθ14. As D2 increases within the planned angle range and at the same time sinθ14 decreases, changing in the opposite direction, the distance pressing against the box body 110 during the process of opening the door 120 can be reduced.

[0095] As can be seen by comprehensively considering the process of opening from the above closed state to the first opening angle and the process of opening from the first opening angle to the second opening angle, based on the design concept from the first opening angle to the second opening angle, the problems of excessively pressing the box body or exceeding the side surface of the box body assembly can be solved. Therefore, this design concept can be applied to the process from the closed state to the first opening angle. That is, the first opening angle may be regarded as corresponding to the closed state, and the second opening angle may be any angle.

[0096] In this embodiment, the fourth included angle θ14 gradually increases from less than 90 degrees to more than 90 degrees, and the second vertical distance D2 first gradually decreases and then gradually increases, thereby realizing the smooth movement of the outer shaft body 170 with respect to the outer groove body 150 and making the rotation of the door 120 more stable.

[0097] In this embodiment, the first vertical distance D1 gradually decreases from a range between 0.57t and 0.59t (for example, 0.57t, 0.58t, or 0.59t, etc.) to a range between 0.50t and 0.52t (for example, 0.50t, 0.51t, or 0.52t, etc.), and the second vertical distance D2 gradually increases within a range between 0.59t and 0.61t (for example, 0.59t, 0.60t, or 0.61t, etc.).

[0098] In this embodiment, as the opening angle of the door 120 increases, the third included angle θ13 gradually decreases from a range between 35 degrees and 37 degrees to a range between 2 degrees and 4 degrees, and the fourth included angle θ14 gradually increases from a range between 79 degrees and 81 degrees to a range between 125 degrees and 127 degrees.

[0099] Referring to FIG. 24 simultaneously, in this embodiment, there is a first product between the first vertical distance D1 and the cosine value of the third included angle θ13. When the door 120 is in the closed state, the cosine value of the first vertical distance D1 and the third included angle θ13 is the first initial product. The box exceeding distance shown in FIG. 24 is the difference between the first product and the first initial product. During the process in which the door 120 rotates from the first opening angle to the second opening angle with respect to the box body 110, the difference between the maximum value and the minimum value of the first product is less than 0.1t, for example, 0.1t, 0.05t, or 0.02t, etc. Thereby, the opening process of the door 120 with respect to the box body 110 becomes more stable. Also, the first product is constant or gradually decreases, so that the door 120 does not exceed the side surface of the box body 110 during the process of being opened with respect to the box body 110.

[0100] Referring to FIG. 25 simultaneously, in this embodiment, there is a second product between the second vertical distance D2 and the sine value of the fourth included angle θ14. When the door 120 is in the closed state, the sine value of the second vertical distance D2 and the fourth included angle θ14 is the second initial product. The box pressing distance shown in FIG. 25 is the difference between the second product and the second initial product. During the process in which the door 120 rotates from the first opening angle to the second opening angle with respect to the box body 110, the second product gradually decreases at least within a predetermined angle range.

[0101] In this embodiment, the difference between the second product when the door 120 is at the second opening angle and the second product when the door 120 is at the first opening angle is not greater than -0.1t, for example, -0.1t, -0.05t, -0.02t, etc. Thereby, the door 120 becomes more stable during the process of being opened with respect to the box body 110, and does not excessively press the box body 110 during the process of rotating and opening with respect to the box body 110.

[0102] In this embodiment, the change range corresponding to each opening unit angle of the door 120 for the second product gradually increases.

[0103] It should be noted that the hinge assembly in this application is generally designed using a grooved shaft structure. The movement state of the door with respect to the box body depends on the shape of the groove. Naturally, in addition to avoiding problems such as the door excessively pressing the box body or exceeding the side surface of the box body assembly as described above, it is necessary to avoid the problem of the door moving irregularly with respect to the box body.

[0104] Continuing to refer to FIGS. 15 to 17, hereinafter, the hinge of this embodiment may be further limited from another angle. The door 120 further has a rear wall plane 125 and a side wall plane 126. In this application, the front wall plane (not shown) is defined as passing through the outer edge 122 in the closed state of the door 120 and being parallel to the plane where the opening is located. The rear wall plane 125 is defined as passing through the inner edge 121 in the closed state of the door 120 and being parallel to the plane where the opening is located. The side wall plane 126 is defined as passing through the outer edge 122 in the closed state of the door 120 and being perpendicular to the plane where the opening is located. Both move synchronously with the door 120 during the opening process of the door 120. The door thickness t is the distance between the front wall plane and the rear wall plane 125.

[0105] In this embodiment, the inner groove body 140 has a first inner groove portion 141 whose end position is closer to the rear wall plane 125 and the side wall plane 126 than its start position. The outer groove body 150 has a first outer groove portion 151 whose end position is closer to the rear wall plane 125 and the side wall plane 126 than its start position. In the process that the door 120 rotates from the closed state to the open state by the action of the hinge assembly 130 relative to the box body 110 to an open angle of 1, the outer shaft body 170 moves relative to the outer groove body 150 from the start position of the first outer groove portion 151 to the end position of the first outer groove portion 151, and the inner shaft body 160 synchronously moves relative to the inner groove body 140 from the start position of the first inner groove portion 141 to the end position of the first inner groove portion 141. Here, in the process that the door 120 rotates from the closed state to the open state relative to the box body 110 to an open angle of 1, the second movement direction is always inclined with respect to the first movement direction. If the two movement directions are parallel, the movement of the door may become abnormal. In this embodiment, the two movement directions are always inclined, thus solving the abnormal problem.

[0106] Referring to FIG. 26 simultaneously, in this embodiment, there is a first included angle α1 between the first movement direction and the rear wall plane 125, and there is a second included angle α2 between the second movement direction and the rear wall plane 125. At the same actual opening angle of the door 120 relative to the box body 110, the second included angle α2 is larger than the first included angle α1. In the process that the door 120 rotates from the closed state to the open state to an open angle of 1, the first included angle α1 and the second included angle α2 gradually become smaller respectively, and the difference between the second included angle α2 and the first included angle α1 gradually becomes larger, so that the distances from the outer shaft body 170 to the inner edge 121 and the outer edge 122 can all be reduced. For the same reason as above, it is possible to avoid the door 120 exceeding the side surface of the box body 110 (i.e., the plane where the side wall plane 126 is located when the door 120 is in the closed state) or pressing the box body 110 excessively during the opening process of the door 120.

[0107] In this embodiment, a transition position located between the starting position and the ending position of the first outer groove portion 151 is further provided in the first outer groove portion 151. Here, the transition position of the first outer groove portion 151 is closer to the rear wall plane 125 and the side wall plane 126 than the starting position of the first outer groove portion 151. The ending position of the first outer groove portion 151 is closer to the side wall plane 126 and farther from the rear wall plane 125 than the transition position of the first outer groove portion 151. Here, the second included angle α2 is represented in a positive number format. When the first movement direction is away from the rear wall plane 125, the first included angle α1 is represented in a positive number format. When the first movement direction is towards the rear wall plane 125, the first included angle α1 is represented in a negative number format.

[0108] In this embodiment, the first included angle α1 gradually decreases from the range of +45 degrees to +55 degrees (for example, +45 degrees, +50 degrees, or +55 degrees, etc.) to the range between -16 degrees and -26 degrees (for example, -16 degrees, -21 degrees, or -26 degrees, etc.), and the second included angle α2 gradually decreases from the range of +68 degrees to +78 degrees (for example, +68 degrees, +73 degrees, or +78 degrees, etc.) to the range of +37 degrees to +47 degrees (for example, +37 degrees, +42 degrees, or +47 degrees, etc.).

[0109] In this embodiment, the difference between the second included angle α2 and the first included angle α1 gradually increases from the range of +13 degrees to +23 degrees (for example, +13 degrees, +18 degrees, or +23 degrees, etc.) to the range of +63 degrees to +73 degrees (for example, +63 degrees, +68 degrees, or +73 degrees, etc.).

[0110] In this embodiment, the range of the ratio of the locus length of the inner shaft body 160 along the first inner groove portion 141 to the locus length of the outer shaft body 170 along the first outer groove portion 151 is between 1.2 and 1.4, for example, 1.2, 1.3, or 1.4, etc. Thereby, the door 120 can rotate counterclockwise along the direction shown in FIG. 24 with respect to the box body 110.

[0111] In this embodiment, the inner groove body 140 includes a second inner groove portion 142 connected to the first inner groove portion 141, the outer groove body 150 includes a second outer groove portion 152 connected to the first outer groove portion 151, the end position of the second inner groove portion 142 is closer to the rear wall plane 125 and the side wall plane 126 than the start position of the second inner groove portion 142, the end position of the second outer groove portion 152 is closer to the side wall plane 126 and farther from the rear wall plane 125 than the start position of the second outer groove portion 152.

[0112] In the process that the door 120 rotates from the first opening angle to the second opening angle with respect to the box body 110 under the action of the hinge assembly 130, the outer shaft body 170 moves with respect to the outer groove body 150, the starting point of the movement is the starting position of the second outer groove portion 152, the ending point of the movement is the ending position of the second outer groove portion 152, the inner shaft body 160 moves synchronously with respect to the inner groove body 140, the starting point of the movement is the starting position of the second inner groove portion 142, the ending point of the movement is the ending position of the second inner groove portion 142. In the process that the door 120 rotates from the first opening angle to the second opening angle with respect to the box body 110, the second included angle α2 gradually increases, the first included angle α1 first gradually decreases and then gradually increases, the difference between the second included angle α2 and the first included angle α1 first gradually increases and then gradually decreases, thereby all the distances from the outer shaft body 170 to the inner edge 121 and the outer edge 122 can be reduced, offsetting the increase of the projection line of the connecting line between the outer shaft body 170 and the outer edge 122 on the first reference plane 123 and the increase of the distance between the outer shaft body 170 and the first reference plane 123, so that it is possible to avoid the door 120 exceeding the side surface of the box body 110 or pressing the box body 110 excessively during the opening process.

[0113] In this embodiment, the range of the ratio of the trajectory length of the inner shaft body 160 along the second inner groove portion 142 to the trajectory length of the outer shaft body 170 along the second outer groove portion 152 is 2.1 - 2.3, such as 2.1, 2.2 or 2.3, etc., whereby the door 120 can rotate counterclockwise along the direction shown in FIG. 24 with respect to the box body 110.

[0114] In this embodiment, in the process that the door 120 rotates from the first opening angle to the second opening angle with respect to the box body 110, the sum of the first included angle α1 and the actual opening angle of the corresponding door 120 gradually increases.

[0115] In this embodiment, the second included angle α2 gradually increases from the range of +37 degrees to +47 degrees (for example, +37 degrees, +42 degrees, or +47 degrees, etc.) to the range of +49 degrees to +59 degrees (for example, +49 degrees, +54 degrees, or +59 degrees, etc.), and the first included angle α1 first gradually decreases from the range of -16 degrees to -26 degrees (for example, -16 degrees, -21 degrees, or -26 degrees, etc.) to the range of -34 degrees to -44 degrees (for example, -34 degrees, -39 degrees, or -44 degrees, etc.), and then gradually increases to the range of -13 degrees to -23 degrees (for example, -13 degrees, -18 degrees, or -23 degrees, etc.).

[0116] In this embodiment, the difference between the second included angle α2 and the first included angle α1 first gradually increases from the range of +58 degrees to +68 degrees (for example, +58 degrees, +63 degrees, or +68 degrees, etc.) to the range of +85 degrees to +95 degrees (for example, +85 degrees, +90 degrees, or +95 degrees, etc.), and then gradually decreases to the range of +67 degrees to +77 degrees (for example, +67 degrees, +72 degrees, or +77 degrees, etc.). The change width corresponding to each opening unit angle of the door 120 in the increasing process is larger than the change width corresponding to each opening unit angle of the door 120 in the decreasing process.

[0117] In this embodiment, the range of the actual opening angle of the door 120 corresponding to the transition position of the difference between the second included angle α2 and the first included angle α1 gradually increasing is between 50 degrees and 60 degrees, for example, 50 degrees, 55 degrees, or 60 degrees, etc.

[0118] In this embodiment, when the door 120 is in the closed state, the range of the distance from the axis of the inner shaft body 160 to the rear wall plane 125 is between 0.75t and 0.77t, for example, 0.75t, 0.76t, or 0.77t, etc. The range of the distance from the axis of the inner shaft body 160 to the side wall plane 126 is between 0.79t and 0.81t, for example, 0.79t, 0.80t, or 0.81t, etc. The range of the distance from the axis of the outer shaft body 170 to the rear wall plane 125 is between 0.59t and 0.61t, for example, 0.59t, 0.60t, or 0.61t, etc. The range of the distance from the axis of the outer shaft body 170 to the side wall plane 126 is between 0.49t and 0.51t, for example, 0.49t, 0.50t, or 0.51t, etc.

[0119] When the door 120 is at the first opening angle, the range of the distance from the axis of the inner shaft body 160 to the rear wall plane 125 is between 0.51t and 0.53t, for example, 0.51t, 0.52t or 0.53t, etc. The range of the distance from the axis of the inner shaft body 160 to the side wall plane 126 is between 0.64t and 0.66t, for example, 0.64t, 0.65t or 0.66t, etc. The range of the distance from the axis of the outer shaft body 170 to the rear wall plane 125 is between 0.50t and 0.52t, for example, 0.50t, 0.51t or 0.52t, etc. The range of the distance from the axis of the outer shaft body 170 to the side wall plane 126 is between 0.30t and 0.32t, for example, 0.30t, 0.31t or 0.32t, etc.

[0120] When the door 120 is at the second opening angle, the range of the distance from the axis of the inner shaft body 160 to the rear wall plane 125 is between 0.37t and 0.39t, for example, 0.37t, 0.38t or 0.39t, etc. The range of the distance from the axis of the inner shaft body 160 to the side wall plane 126 is between 0.52t and 0.54t, for example, 0.52t, 0.53t or 0.54t, etc. The range of the distance from the axis of the outer shaft body 170 to the rear wall plane 125 is between 0.55t and 0.57t, for example, 0.55t, 0.56t or 0.57t, etc. The range of the distance from the axis of the outer shaft body 170 to the side wall plane 126 is between 0.22t and 0.24t, for example, 0.22t, 0.23t or 0.24t, etc.

[0121] In this embodiment, the inner groove body 140 includes a third inner groove portion 143 connected to the second inner groove portion 142. The third inner groove portion 143 is an arc centered on the end position of the second outer groove portion 152. In the process that the door 120 rotates from the second opening angle to the third opening angle with respect to the box body 110 under the action of the hinge assembly 120, the outer shaft body 170 rotates at the end position of the second outer groove portion 152 with respect to the outer groove body 150, and the inner shaft body 160 moves synchronously from the start position of the third inner groove portion 143 to the end position of the third inner groove portion 143 with respect to the inner groove body 140.

[0122] In this embodiment, the range of the third opening angle is between 122 degrees and 132 degrees, for example, 122 degrees, 127 degrees, 132 degrees, etc.

[0123] Referring to FIG. 27, a fourth embodiment of the box assembly 20 of the present application includes a box body 210 forming a storage space with an opening, a door 220 installed to cover the opening and capable of closing the opening, and a hinge assembly 230 installed on the pivot side of the box body 210 and used to pivotally connect the box body 210 and the door 220. Here, for the definitions of the inner edge 221 and outer edge 222 of the door 220, and the first reference plane 223 and the second reference plane 224, reference may be made to the third embodiment of the box assembly 10 above, and detailed description is omitted here.

[0124] In this embodiment, the inner groove body 240 and the outer shaft body 250 of the hinge assembly 230 are installed on the door 220, the inner shaft body 260 and the outer groove body 270 of the hinge assembly 230 are installed on the box body 210, the outer groove body 270 and the outer shaft body 250 are fitted to form a first hinge connection point on the axis of the outer shaft body 250, the inner groove body 240 and the inner shaft body 260 are fitted to form a second hinge connection point on the axis of the inner shaft body 260, and the second hinge connection point is installed farther from the outer edge 222 than the first hinge connection point, which is different from the above embodiment. Of course, the design of the hinge connection point in this embodiment is the same as that in the above embodiment.

[0125] In the process of the door 220 being opened relative to the box body 210 under the action of the hinge assembly 230, the door 220 has a first movement direction relative to the box body 210 at the first hinge connection point, and has a second movement direction relative to the box body 210 at the second hinge connection point. There is a first included angle θ21 between the first movement direction and the first reference plane 223, and there is a second included angle θ22 between the second movement direction and the first reference plane 223. Here, for the definitions of the first included angle θ21 and the second included angle θ22, reference may be made to the third embodiment of the box assembly 10 above, and detailed description is omitted here.

[0126] Referring to FIGS. 28 and 29 simultaneously, in the process that the door 220 rotates from the closed state to the first opening angle, the second included angle θ22 is a positive number and less than 90 degrees, the first included angle θ21 is a positive number and decreases gradually from the first initial angle less than 90 degrees to the first end angle, and the difference between the second included angle θ22 and the first included angle θ21 at the same actual opening angle of the door 220 with respect to the box body 210 gradually increases. Analyzing from the perspective of the angles of the motion relationship, the motion of the door with respect to the box body corresponding to the above motion trends of the two hinge connection points includes rotation and translation. Among them, the translation has a tendency to move away from the first reference plane and the second reference plane, and the tendency that the door presses against the box body or exceeds the side surface of the box body assembly during rotation is offset. Therefore, the door assembly of the present application can realize that the door does not press against the box body excessively or exceed the side surface of the box body assembly excessively.

[0127] In this embodiment, the range of the first opening angle is between 25 degrees and 31 degrees, for example, 25 degrees, 27 degrees or 31 degrees, etc.

[0128] In this embodiment, the range of the first initial angle is between +33 degrees and +23 degrees, for example, +33 degrees, +28 degrees or +23 degrees, etc., the range of the first end angle is between -5 degrees and -15 degrees, for example, -5 degrees, -10 degrees or -15 degrees, etc., and the range of the second included angle θ22 is between +78 degrees and +64 degrees, for example, +78 degrees, +72 degrees or +64 degrees, etc.

[0129] In this embodiment, when the door 220 rotates from the closed state to the first opening angle, the ratio of the motion trajectory length of the inner shaft body 260 with respect to the inner groove body 240 to the motion trajectory length of the outer shaft body 250 with respect to the outer groove body 270 ranges from 1.5 to 1.7, for example, 1.5, 1.56, 1.6 or 1.7, etc., whereby the door 220 can rotate counterclockwise along the direction shown in FIG. 24 with respect to the box body 210.

[0130] Referring to FIG. 30 simultaneously, in the process that the door 220 rotates from the first opening angle to the second opening angle, the first included angle θ21 gradually increases from the second initial angle with an absolute value less than 90 degrees to the second end angle, the second included angle θ22 gradually increases from the third initial angle represented in positive number form and less than 90 degrees to the third end angle, and the difference between the second included angle θ22 and the first included angle θ21 at the same actual opening angle of the door 220 with respect to the box body 210 gradually increases at least first. Thereby, the increase of the projection line of the connecting line between the outer shaft body 250 and the outer edge 222 on the first reference plane 223 and the increase of the projection line of the connecting line between the outer shaft body 250 and the inner edge 221 on the second reference plane 224 are offset, so that it is possible to avoid the door 220 exceeding the side surface of the box body 210 (i.e., the second reference plane 224) or pressing the box body 210 excessively during the opening process of the door 220.

[0131] In this embodiment, the range of the second opening angle is between 57 degrees and 60 degrees, for example, 57 degrees, 58 degrees or 60 degrees, etc.

[0132] In this embodiment, the range of the second initial angle is between -5 degrees and -15 degrees, for example, -5 degrees, -10 degrees or -15 degrees, etc., the range of the second end angle is between +37 degrees and +47 degrees, for example, +37 degrees, +42 degrees or +47 degrees, etc., the range of the third initial angle is between +65 degrees and +75 degrees, for example, +65 degrees, +70 degrees or +75 degrees, etc., and the range of the third end angle is between +108 degrees and +118 degrees, for example, +118 degrees, +123 degrees or +118 degrees, etc.

[0133] In this embodiment, when the door 220 rotates from the first opening angle to the second opening angle, the range of the ratio of the movement track length of the inner shaft body 260 with respect to the inner groove body 240 to the movement track length of the outer shaft body 250 with respect to the outer groove body 270 is 2.1 to 2.3, for example, 2.1, 2.18, 2.2 or 2.3, etc. Thereby, the door 220 can rotate counterclockwise along the direction shown in FIG. 24 with respect to the box body 210.

[0134] In this embodiment, the thickness of the door 220 (i.e., the length of the door 220 in the direction parallel to the second reference plane 224 of the door 220) is t. When the door 220 rotates from the closed position to the maximum angle with respect to the box body 210 under the action of the hinge assembly 230, the range of the distance between the axis of the inner shaft body 260 and the first reference plane 223 is between 0.75t and 0.77t, for example, 0.75t, 0.76t or 0.77t, etc. The range of the distance between the axis of the inner shaft body 260 and the second reference plane 224 is between 0.79t and 0.81t, for example, 0.79t, 0.80t or 0.81t, etc. When the door 220 is in the closed state, the range of the distance between the outer shaft body 250 and the first reference plane 223 is between 0.55t and 0.57t, for example, 0.55t, 0.56t or 0.57t, etc. The range of the distance between the outer shaft body 250 and the second reference plane 224 is between 0.22t and 0.24t, for example, 0.22t, 0.23t or 0.24t, etc. When the door 220 is at the first opening angle, the range of the distance between the axis of the outer shaft body 250 and the first reference plane 223 is between 0.59t and 0.61t, for example, 0.59t, 0.60t or 0.61t, etc. The range of the distance between the axis of the outer shaft body 250 and the second reference plane 224 is between 0.40t and 0.42t, for example, 0.40t, 0.41t or 0.42t, etc. When the door 220 is at the second opening angle, the range of the distance between the axis of the outer shaft body 250 and the first reference plane 223 is between 0.59t and 0.61t, for example, 0.59t, 0.60t or 0.61t, etc. The range of the distance between the axis of the outer shaft body 250 and the second reference plane 224 is between 0.49t and 0.51t, for example, 0.49t, 0.50t or 0.51t, etc.

[0135] In this embodiment, a reference point is further provided on the door 220. The reference point coincides with the axis of the outer shaft body 250 when the outer shaft body 250 is at the end position of the outer groove body 270. The change process of the first vertical distance to the outer edge 222 and the second vertical distance to the inner edge 221 of the reference point is similar to that of the third embodiment of the box body assembly 10 above, and detailed description is omitted here.

[0136] Referring to FIG. 31, a fifth embodiment of the box assembly 30 of the present application includes a box body 310 forming a storage space with an opening, a door 320 installed to cover the opening and capable of closing the opening, and a hinge assembly 330 installed on the pivot side of the box body 310 and used to pivotally connect the box body 310 and the door 320. Here, for the definitions of the inner edge 321 and outer edge 322 of the door 320, and the first reference plane 323 and second reference plane 324, reference may be made to the third embodiment of the box assembly 10 above, and detailed description is omitted here.

[0137] In this embodiment, the inner shaft body 340 and outer groove body 350 of the hinge assembly 330 are installed on the door 320, the inner groove body 360 and outer shaft body 370 of the hinge assembly 330 are installed on the box body 310, the outer groove body 350 and the outer shaft body 370 are fitted to form a first hinge connection point on the axis of the outer shaft body 370, the inner groove body 360 and the inner shaft body 340 are fitted to form a second hinge connection point on the axis of the inner shaft body 340, and the second hinge connection point is installed farther from the outer edge 322 than the first hinge connection point, which is different from the above embodiment. In the process of the door 320 being opened with respect to the box body 310 under the action of the hinge assembly 330, the door 320 has a first movement direction with respect to the box body 310 at the first hinge connection point, and has a second movement direction with respect to the box body 310 at the second hinge connection point. There is a first included angle θ31 between the first movement direction and the first reference plane 323, and there is a second included angle θ32 between the second movement direction and the first reference plane 323. Here, for the definitions of the first included angle θ31 and the second included angle θ32, reference may be made to the third embodiment of the box assembly 10 above, and detailed description is omitted here.

[0138] Referring to FIGS. 32 and 33 simultaneously, in the process that the door 320 rotates from the closed state to the first opening angle, the second included angle θ32 is a positive number and less than 90 degrees, the first included angle θ31 is a positive number and gradually decreases from the first initial angle less than 90 degrees to the first end angle, and the difference between the second included angle θ32 and the first included angle θ31 at the same actual opening angle of the door 320 with respect to the box body 310 gradually increases. Analyzing from the perspective of the angles of the motion relationship, the motion of the door with respect to the box body corresponding to the above motion trends of the two hinge connection points includes rotation and translation. Among them, the translation has a tendency to move away from the first reference plane and the second reference plane, and the tendency that the door presses against the box body or exceeds the side surface of the box body assembly during rotation is offset. Therefore, the door assembly of the present application can achieve that the door does not excessively press against the box body or exceed the side surface of the box body assembly.

[0139] In this embodiment, the range of the first opening angle is between 25 degrees and 31 degrees, for example, 25 degrees, 29 degrees or 31 degrees, etc.

[0140] In this embodiment, the range of the first initial angle is between +55 degrees and +45 degrees, for example, +55 degrees, +50 degrees or +45 degrees, etc., the range of the first end angle is between +1 degree and +11 degrees, for example, +1 degree, +6 degrees or +11 degrees, etc., and the range of the second included angle θ32 is between +0 degree and +18 degrees, specifically 5 degrees to 13 degrees, for example, +0 degree, +9 degrees or +18 degrees, etc., and it gradually decreases.

[0141] In this embodiment, when the door 320 rotates from the closed state to the first opening angle, the ratio range of the motion trajectory length of the inner shaft body 340 with respect to the inner groove body 360 to the motion trajectory length of the outer shaft body 370 with respect to the outer groove body 350 is 1.5 to 1.7, for example, 1.5, 1.58, 1.6 or 1.7, etc. Thereby, the door 320 can rotate counterclockwise along the direction shown in FIG. 26 with respect to the box body 310.

[0142] Referring to FIG. 34 simultaneously, during the process in which the door 320 rotates from the first opening angle to the second opening angle, the first included angle θ31 gradually increases from the second initial angle with an absolute value smaller than 90 degrees to the second end angle, the second included angle θ32 gradually increases from the third initial angle which is a positive number and smaller than 90 degrees to the third end angle, and the difference between the second included angle θ32 and the first included angle θ31 at the same actual opening angle of the door 320 with respect to the box body 310 gradually becomes larger at least first. Thereby, it cancels out the increase of the projection line of the connecting line between the outer shaft body 370 and the outer edge 322 on the first reference plane 323 and the increase of the projection line of the connecting line between the outer shaft body 370 and the inner edge 321 on the second reference plane 324. In this way, it is possible to avoid the door 320 exceeding the side surface of the box body 310 (i.e., the second reference plane 324) or pressing the box body 310 excessively during the process of opening the door 320.

[0143] In this embodiment, the range of the second opening angle is between 57 degrees and 60 degrees, for example, 57 degrees, 58 degrees, or 60 degrees, etc.

[0144] In this embodiment, the range of the second initial angle is between +1 degree and +11 degrees, for example, +1 degree, +6 degrees, or +11 degrees, etc.; the range of the second end angle is between +36 degrees and +46 degrees, for example, +36 degrees, +41 degrees, or +46 degrees, etc.; the range of the third initial angle is between 0 degree and +10 degrees, for example, 0 degree, 5 degrees, or 10 degrees, etc.; the range of the third end angle is between +45 degrees and +55 degrees, for example, +45 degrees, +50 degrees, or +55 degrees, etc.

[0145] In this embodiment, when the door 320 rotates from the first opening angle to the second opening angle, the ratio of the movement track length of the inner shaft body 340 with respect to the inner groove body 360 to the movement track length of the outer shaft body 370 with respect to the outer groove body 350 ranges from 3.0 to 3.2, for example, 3.0, 3.1, 3.13, or 3.2, etc. Thereby, the door 320 can rotate counterclockwise along the direction shown in FIG. 26 with respect to the box body 310.

[0146] In this embodiment, the thickness of the door 320 (i.e., the length in the parallel direction of the second reference plane 324 of the door 320) is t. When the door 320 is opened from the closed position to the maximum angle with respect to the box body 310 under the action of the hinge assembly 330, the range of the distance between the outer shaft body 370 and the first reference plane 323 is between 0.59t and 0.61t, for example, 0.59t, 0.60t or 0.61t, etc. The range of the distance between the axis of the outer shaft body 370 and the second reference plane 324 is between 0.49t and 0.51t, for example, 0.49t, 0.50t or 0.51t, etc. When the door 320 is in the closed state, the range of the distance between the axis of the inner shaft body 340 and the first reference plane 323 is between 0.21t and 0.23t, for example, 0.21t, 0.22t or 0.23t, etc. The range of the distance between the axis of the inner shaft body 340 and the second reference plane 324 is between 0.17t and 0.19t, for example, 0.17t, 0.18t or 0.19t, etc. When the door 320 is at the first opening angle, the range of the distance between the axis of the inner shaft body 340 and the first reference plane 323 is between 0.27t and 0.29t, for example, 0.27t, 0.28t or 0.29t, etc. The range of the distance between the axis of the inner shaft body 340 and the second reference plane 324 is between 0.52t and 0.54t, for example, 0.52t, 0.53t or 0.54t, etc. When the door 320 is at the second opening angle, the range of the distance between the axis of the inner shaft body 340 and the first reference plane 323 is between 0.37t and 0.39t, for example, 0.37t, 0.38t or 0.39t, etc. The range of the distance between the axis of the inner shaft body 340 and the second reference plane 324 is between 0.76t and 0.78t, for example, 0.76t, 0.77t or 0.78t, etc.

[0147] In this embodiment, a reference point is further provided on the door 320. The reference point coincides with the first hinge connection point. The change process of the first vertical distance to the outer edge 322 and the second vertical distance to the inner edge 321 of the reference point is similar to that of the third embodiment of the box body assembly 10 above, and the detailed description is omitted here.

[0148] Referring to FIG. 35, a sixth embodiment of the box assembly 40 of the present application includes a box body 410 forming a storage space with an opening, a door 420 installed to cover the opening and capable of closing the opening, and a hinge assembly 430 installed on the pivot side of the box body 410 and used to pivotally connect the box body 410 and the door 420. Here, for the definitions of the inner edge 421 and outer edge 422 of the door 420, and the first reference plane 423 and second reference plane 424, reference may be made to the third embodiment of the box assembly 10 above, and detailed description is omitted here.

[0149] In this embodiment, the inner shaft body 440 and outer shaft body 450 of the hinge assembly 430 are installed on the door 420, the inner groove body 460 and outer groove body 470 of the hinge assembly 430 are installed on the box body 410, the outer groove body 470 and the outer shaft body 450 are fitted to form a first hinge connection point on the axis of the outer shaft body 450, and the inner groove body 460 and the inner shaft body 440 are fitted to form a second hinge connection point on the axis of the inner shaft body 440. This is different from the above embodiment in that the second hinge connection point is installed farther from the outer edge 422 than the first hinge connection point. In the process of the door 420 being opened relative to the box body 410 under the action of the hinge assembly 430, the door 420 has a first movement direction relative to the box body 410 at the first hinge connection point, and has a second movement direction relative to the box body 410 at the second hinge connection point. There is a first included angle θ41 between the first movement direction and the first reference plane 423, and there is a second included angle θ42 between the second movement direction and the first reference plane 423. Here, for the definitions of the first included angle θ41 and the second included angle θ42, reference may be made to the third embodiment of the box assembly 10 above, and detailed description is omitted here.

[0150] Referring to FIGS. 36 and 37 simultaneously, in the process that the door 420 rotates from the closed state to the first opening angle, the second included angle θ42 is a positive number and less than 90 degrees, the first included angle θ41 is a positive number and gradually decreases from the first initial angle less than 90 degrees to the first end angle, and the difference between the second included angle θ42 and the first included angle θ41 at the same actual opening angle of the door 420 with respect to the box body 410 gradually increases. Analyzing from the perspective of the angles of the motion relationship, the motion of the door with respect to the box body corresponding to the above motion trends of the two hinge connection points includes rotation and translation. Among them, the translation has a tendency to move away from the first reference plane and the second reference plane, and the tendency that the door presses against the box body or exceeds the side surface of the box body assembly during rotation is offset. Therefore, the door assembly of the present application can achieve that the door does not excessively press against the box body or exceed the side surface of the box body assembly.

[0151] In this embodiment, the range of the first opening angle is between 25 degrees and 31 degrees, for example, 25 degrees, 27 degrees or 31 degrees, etc.

[0152] In this embodiment, the range of the first initial angle is between +33 degrees and +23 degrees, for example, +33 degrees, +28 degrees or +23 degrees, etc., the range of the first end angle is between -5 degrees and -15 degrees, for example, -5 degrees, -10 degrees or -15 degrees, etc., and the range of the second included angle θ22 is between +0 degrees and +18 degrees, for example, +0 degrees, +8 degrees or +18 degrees, etc., and it gradually decreases.

[0153] In this embodiment, when the door 420 rotates from the closed state to the first opening angle, the ratio of the movement track length of the inner shaft body 440 with respect to the inner groove body 460 to the movement track length of the outer shaft body 450 with respect to the outer groove body 470 ranges from 1.8 to 2.0, for example, 1.8, 1.87, 1.9 or 2.0, etc., whereby the door 420 can rotate counterclockwise along the direction shown in FIG. 28 with respect to the box body 410.

[0154] Referring to FIG. 38 simultaneously, in the process that the door 420 rotates from the first opening angle to the second opening angle, the first included angle θ41 gradually increases from the second initial angle with an absolute value smaller than 90 degrees to the second end angle, the second included angle θ42 gradually increases from the third initial angle represented in positive form and smaller than 90 degrees to the third end angle, and the difference between the second included angle θ42 and the first included angle θ41 at the same actual opening angle of the door 420 with respect to the box body 410 gradually increases at least first, thereby offsetting the increase of the projection line of the connecting line between the outer shaft body 450 and the outer edge 422 on the first reference plane 423 and the increase of the projection line of the connecting line between the outer shaft body 450 and the inner edge 421 on the second reference plane 424, so that it is possible to avoid the door 420 exceeding the side surface of the box body 410 (i.e., the second reference plane 424) or pressing the box body 410 excessively during the opening process of the door 420.

[0155] In this embodiment, the range of the second opening angle is between 57 degrees and 60 degrees, for example, 57 degrees, 58 degrees or 60 degrees, etc.

[0156] In this embodiment, the range of the second initial angle is between -5 degrees and -15 degrees, for example, -5 degrees, -10 degrees or -15 degrees, etc., the range of the second end angle is between +37 degrees and +47 degrees, for example, +37 degrees, +42 degrees or +47 degrees, etc., the range of the third initial angle is between +0 degrees and +10 degrees, for example, +0 degrees, +6 degrees or +10 degrees, etc., and the range of the third end angle is between +45 degrees and +55 degrees, for example, +45 degrees, +51 degrees or +55 degrees, etc.

[0157] In this embodiment, when the door 420 rotates from the first opening angle to the second opening angle, the ratio range of the movement trajectory length of the inner shaft body 440 with respect to the inner groove body 460 to the movement trajectory length of the outer shaft body 450 with respect to the outer groove body 470 is 3.0 to 3.2, for example, 3.0, 3.1 or 3.2, etc., whereby the door 420 can rotate counterclockwise along the direction shown in FIG. 28 with respect to the box body 410.

[0158] In this embodiment, the thickness of the door 420 (i.e., the length in the parallel direction of the second reference plane 424 of the door 420) is t. When the door 420 is in the closed state, the distance range between the axis of the inner shaft body 440 and the first reference plane 423 is between 0.21t and 0.23t, for example, 0.21t, 0.22t, or 0.23t, etc. The distance range between the axis of the inner shaft body 440 and the second reference plane 424 is between 0.17t and 0.19t, for example, 0.17t, 0.18t, or 0.19t, etc. The distance range between the axis of the outer shaft body 450 and the first reference plane 423 is between 0.55t and 0.57t, for example, 0.55t, 0.56t, or 0.57t, etc. The distance range between the axis of the outer shaft body 450 and the second reference plane 424 is between 0.22t and 0.24t, for example, 0.22t, 0.23t, or 0.24t, etc. When the door 420 is at the first opening angle, the distance range between the axis of the inner shaft body 440 and the first reference plane 423 is between 0.27t and 0.29t, for example, 0.27t, 0.28t, or 0.29t, etc. The distance range between the axis of the inner shaft body 440 and the second reference plane 424 is between 0.52t and 0.54t, for example, 0.52t, 0.53t, or 0.54t, etc. The distance range between the axis of the outer shaft body 450 and the first reference plane 423 is between 0.59t and 0.61t, for example, 0.59t, 0.60t, or 0.61t, etc. The distance range between the axis of the outer shaft body 450 and the second reference plane 424 is between 0.40t and 0.42t, for example, 0.40t, 0.41t, or 0.42t, etc. When the door 420 is at the second opening angle, the distance range between the axis of the inner shaft body 440 and the first reference plane 423 is between 0.37t and 0.39t, for example, 0.37t, 0.38t, or 0.39t, etc. The distance range between the axis of the inner shaft body 440 and the second reference plane 424 is between 0.76t and 0.78t, for example, 0.76t, 0.77t, or 0.78t, etc. The distance range between the axis of the outer shaft body 450 and the first reference plane 423 is between 0.59t and 0.61t, for example, 0.59t, 0.60t, or 0.61t, etc. The distance range between the axis of the outer shaft body 450 and the second reference plane 424 is between 0.49t and 0.51t, for example, 0.49t, 0.50t, or 0.51t, etc.

[0159] In this embodiment, a reference point is further provided on the door 420. The reference point coincides with the axis of the outer shaft body 450 when the outer shaft body 450 is at the end position of the outer groove body 470. The changing processes of the first vertical distance to the outer edge 422 and the second vertical distance to the inner edge 421 are similar to those of the third embodiment of the above box body assembly 10, and detailed descriptions are omitted here.

[0160] Referring to FIG. 39, a seventh embodiment of the box body assembly 50 of the present application includes a box body 510 forming a storage space with an opening, a door 520 installed to cover the opening and capable of closing the opening, and a hinge assembly 530 installed on the pivot side of the box body 510 and used to pivotally connect the box body 510 and the door 520. Here, for the definitions of the inner edge 521 and the outer edge 522 of the door 520, and the first reference plane 523 and the second reference plane 524, reference may be made to the third embodiment of the above box body assembly 10, and detailed descriptions are omitted here.

[0161] This embodiment is different from the above embodiment in that the hinge assembly 530 includes a groove body 540 installed on the door 520 and a shaft body 550 installed on the box body 510. The groove body 540 and the shaft body 550 are fitted to form a second hinge connection point on the axis of the shaft body 550. The hinge assembly 530 further includes a connecting rod 560 with one end hinge-connected to the door 520 to form a first hinge connection point and the other end hinge-connected to the box body 510. The second hinge connection point is installed farther away from the outer edge 522 than the first hinge connection point. When the door 520 is opened with respect to the box body 510 under the action of the hinge assembly 530, it has a first movement direction with respect to the box body 510 at the first hinge connection point and a second movement direction with respect to the box body 510 at the second hinge connection point. There is a first included angle θ51 between the first movement direction and the first reference plane 523, and a second included angle θ52 between the second movement direction and the first reference plane 523. Here, for the definitions of the first included angle θ51 and the second included angle θ52, reference may be made to the third embodiment of the above box body assembly 10, and detailed descriptions are omitted here.

[0162] Referring to FIG. 40 simultaneously, in the process that the door 520 rotates from the closed state to the first opening angle, the second included angle θ52 is a positive number and less than 90 degrees, the first included angle θ51 is a positive number and gradually decreases from the first initial angle less than 90 degrees to the first end angle, and the difference between the second included angle θ52 and the first included angle θ51 at the same actual opening angle of the door 520 with respect to the box body 510 gradually increases. Analyzing from the perspective of the angles of the motion relationship, corresponding to the above motion trends of the two hinge connection points, the motion of the door with respect to the box body includes rotation and translation. Among them, the translation has a tendency to move away from the first reference plane and the second reference plane, and the tendency that the door presses against the box body or exceeds the side surface of the box body assembly during rotation is offset. Therefore, the door assembly of the present application can achieve that the door does not excessively press against the box body or exceed the side surface of the box body assembly.

[0163] In this embodiment, the range of the first opening angle is between 25 degrees and 31 degrees, for example, 25 degrees, 27 degrees or 31 degrees.

[0164] In this embodiment, the range of the first initial angle is between +36 degrees and +26 degrees, for example, +36 degrees, +31 degrees or +26 degrees, etc.; the range of the first end angle is between -5 degrees and +5 degrees, for example, -5 degrees, 0 degrees or +5 degrees, etc.; the range of the second included angle θ52 is between +78 degrees and +64 degrees, for example, +78 degrees, +71 degrees or +64 degrees, etc.

[0165] Referring to FIG. 41 simultaneously, in this embodiment, in the process that the door 520 rotates from the first opening angle to the second opening angle, the first included angle θ51 becomes even smaller, and the second included angle θ52 is a positive number and gradually increases from the second initial angle less than 90 degrees to the second end angle.

[0166] In this embodiment, the first included angle θ51 becomes even smaller in the range of -9 degrees to -19 degrees, for example, -9 degrees, -14 degrees or -19 degrees, etc.; the range of the second initial angle is between +64 degrees and +74 degrees, for example, +64 degrees, +69 degrees or +74 degrees, etc.; the range of the second end angle is between +108 degrees and +118 degrees, for example, +108 degrees, +113 degrees or +118 degrees, etc.

[0167] According to some of the above-described embodiments, the box assembly of the present application includes a box body that forms a storage space having an opening, a door that is installed to cover the opening and can close the opening, and a hinge assembly that is installed on the pivot side of the box body and is used to pivotally connect the box body and the door. The door has an inner edge and an outer edge formed on the pivot side. The box assembly is provided with a first reference plane that passes through the inner edge when the door is in the closed state and is parallel to the plane where the opening is located, and a second reference plane that passes through the outer edge when the door is in the closed state and is perpendicular to the plane where the opening is located. The first reference plane and the second reference plane are stationary with respect to the box body during the process in which the door is opened with respect to the box body.

[0168] The hinge assembly has a first hinge connection point and a second hinge connection point. The second hinge connection point is installed farther from the outer edge than the first hinge connection point. During the process in which the door is opened with respect to the box body under the action of the hinge assembly, the door has a first movement direction with respect to the box body at the first hinge connection point, and a second movement direction with respect to the box body at the second hinge connection point. There is a first included angle between the first movement direction and the first reference plane, and a second included angle between the second movement direction and the first reference plane. When the first movement direction is provided to be away from the first reference plane, the first included angle is a positive number. When the first movement direction is provided to be away from the second reference plane, the absolute value of the first included angle is less than 90 degrees. When the second movement direction is provided to be away from the second reference plane, the second included angle is a positive number. When the second movement direction is provided to be away from the second reference plane, the absolute value of the second included angle is less than 90 degrees.

[0169] In the process that the door rotates from the closed state to the first opening angle, the second included angle is a positive number and less than 90 degrees, the first included angle is a positive number and decreases gradually from the first initial angle less than 90 degrees to the first end angle, and the difference between the second included angle and the first included angle at the same actual opening angle of the door with respect to the box body gradually increases. In the process that the door rotates from the first opening angle to the second opening angle, the first included angle gradually increases from the second initial angle with an absolute value less than 90 degrees to the second end angle, the second included angle gradually increases from the third initial angle which is a positive number and less than 90 degrees to the third end angle, and the difference between the second included angle and the first included angle at the same actual opening angle of the door with respect to the box body at least gradually increases first.

[0170] In addition, in the process that the door is opened from the closed position to the maximum angle with respect to the box body under the action of the hinge assembly, the first hinge connection point moves from the starting position to the ending position. Further, on the door, there is a reference point that overlaps with the one that is farthest from the second reference plane among the starting position and the ending position of the first hinge connection point, and is relatively stationary with respect to the box body during the opening process of the door. The reference point has a first perpendicular line to the outer edge and has a first vertical distance along the first perpendicular line to reach the outer edge. The reference point has a second perpendicular line to the inner edge and has a second vertical distance along the second perpendicular line to reach the inner edge. The first perpendicular line has a third included angle with respect to the first reference plane, and the second perpendicular line has a fourth included angle with respect to the first reference plane. In the process that the door rotates from the closed state to the first opening angle with respect to the box body, the first vertical distance and the second vertical distance gradually decrease, the third included angle gradually decreases within the range of 0 degrees to 90 degrees, and the fourth included angle gradually increases within the range of 0 degrees to 90 degrees. In the process that the door rotates from the first opening angle to the second opening angle with respect to the box body, the first vertical distance gradually decreases, the third included angle gradually decreases within the range of 0 degrees to 90 degrees, the fourth included angle gradually increases, and exceeds 90 degrees within at least the predetermined angle range before the second opening angle, and the second vertical distance gradually increases within the predetermined angle range.

[0171] According to the above hinge assembly, it can be realized that the door 120 rotates with respect to the box body 110, and the inner edge 121 and the outer edge 122 of the door 120 have a relative predetermined movement locus as shown in FIGS. 42 and 43.

[0172] Here, when the door 120 is opened from the closed state with respect to the box body 110 to the first opening angle under the action of the hinge assembly 130, during the process, the outer edge 122 moves along the first outer edge locus A1B1 to the first reference plane X, and the inner edge 121 moves along the first inner edge locus A2B2 toward the side facing the opening of the second reference plane Y. In the movement of the outer edge 121 and the inner edge 122 in their respective directions, the radius of curvature of the first outer edge locus A1B1 is 5t or more, and the distance exceeding the side opposite to the opening of the second reference plane Y is d1 or less, where d1 is the first predetermined distance; the radius of curvature of the first inner edge locus A2B2 is 100t or more, and the distance exceeding the side facing the opening of the first reference plane X is d2 or less, where d2 is the second predetermined distance, and t is the thickness of the door. Based on the limitation of the radius of curvature of the movement locus and the distance that the movement locus can exceed the reference plane, the door can move stably without exceeding the predetermined range.

[0173] The specific values of the first predetermined distance and the second predetermined distance can be determined according to the actual product design requirements. For example, the first predetermined distance can be determined according to the distance between the wall for embedding the box body assembly and the box body assembly, or the second distance can be determined according to the thickness or elasticity of the door seal of the box body. In this embodiment, taking the door thickness as a standard, the first predetermined distance and the second predetermined distance are limited to 0 to 0.15 times the door thickness. If 0 times is selected, it means that the door is limited not to press against the box body or exceed the side of the box body assembly. In this embodiment, specifically, 0.1 times can be selected, that is, it is allowed to exceed 0.1 times the door thickness. It can also be limited according to empirical values. The first predetermined distance is set to 0 mm to 4 mm, and the second predetermined distance is set to 0 mm to 2 mm. Similarly, if 0 mm is selected for both, it means that it is limited not to exceed. In this embodiment, the first predetermined distance is 3 mm, and the second predetermined distance is 1 mm, that is, they are the allowable excess distances.

[0174] Furthermore, in this embodiment, the end point B2 of the first inner edge locus A2B2 is on the first reference plane X, or is on the side opposite to the opening of the first reference plane X and the distance to the first reference plane X is 0.058t or less. The end point B1 of the first outer edge locus A1B1 is on the second reference plane Y, or is on the side facing the opening of the second reference plane Y and the distance to the second reference plane Y is 0.135t or less.

[0175] That is, after the door 120 is opened to the first opening angle, the inner edge 122 of the door 120 will not press against the box body 110 or move away from the box body 110 excessively. The outer edge 121 will not exceed the side surface of the box body assembly 100 or move excessively toward the side facing the opening of the second reference plane Y. Thereby, no significant displacement problem occurs when the door 12 is opened, and the movement of the door 120 becomes more stable.

[0176] In the process of the door 120 being opened from the first opening angle to the second opening angle with respect to the box body 11, the inner edge 121 moves along the second inner edge locus toward the side facing the opening of the second reference plane Y and the side opposite to the opening of the first reference plane X, and the radius of curvature of the second inner edge locus gradually decreases. The outer edge 122 moves along the second outer edge locus toward the first reference plane X, the radius of curvature of the second outer edge locus is 5t or more, and the distance that the second outer edge locus exceeds the side opposite to the opening of the second reference plane is the first predetermined distance or less. The second inner edge locus may be A2C2, and the second outer edge locus may be A1C1.

[0177] Here, the movement direction of the inner edge 121 along the second inner edge locus is the direction away from the box body opening, and the door can be prevented from pressing against the box body. The radius of curvature of the second outer edge locus of the outer edge locus 122 is 5t or more, and the distance that exceeds the side opposite to the opening of the second reference plane is the first predetermined distance or less. According to the above analysis of the first outer edge locus, this feature can prevent the door from exceeding the side surface of the box body assembly.

[0178] Under the action of the hinge assembly 130, the door 120 can be further opened from the second opening angle to the third opening angle with respect to the box body 110. In this process, the inner edge 121 moves along the third inner edge locus C2D2 to the side opposite to the opening of the first reference plane X, and the outer edge 122 moves along the third outer edge locus C1D1 to the side facing the opening of the second reference plane Y. The locus of this movement direction also corresponds to a larger opening angle of the door 120.

[0179] The third outer edge locus C1D1 and the third inner edge locus C2D2 are specifically concentric arcs. The radius of curvature of the third inner edge locus C2D2 is 0.55t - 0.67t, and the radius of curvature of the third outer edge locus C1D1 is 0.45t - 0.55t.

[0180] Specifically, in the design of the three - part locus, the first opening angle corresponding to the first locus is 25 degrees - 31 degrees, the second opening angle corresponding to the second locus is 57 degrees - 60 degrees, and the third opening angle corresponding to the third locus is 122 degrees - 132 degrees. The opening angles here also correspond to the opening angles in the above - mentioned embodiments.

[0181] The length of the first inner edge locus A2B2 is 0.465t, and the length of the first outer edge locus A1B1 is 0.115t.

[0182] The length of the second outer edge locus B1C1 is 0.2285t, and the second inner edge locus B2C2 is provided such that the movement distance of the outer edge 121 on the second outer edge locus B1C1 and the rotation angle of the door 12 with respect to the box body 11 satisfy the following formula:

Equation

[0183] The center of the third inner edge locus C2D2 is inside the door 12 and has a radius of curvature of 0.61t, and the center of the third outer edge locus C1D1 is inside the door 12 and has a radius of curvature of 0.5t. The vertical distance from the center to the first reference plane X is 0.6t, and the vertical distance from the center to the second reference plane Y is 0.5t.

[0184] In summary, different hinge assemblies that conform to the design concept of the present application can all reduce the problems of pressing against the box body or exceeding the side surface of the box body assembly when the door is opened. The above design of the box body assembly can be applied to products with a door and problems such as pressing against the box body or interference when exceeding the box body assembly, for example, products such as refrigerators and cabinets.

[0185] The present application further provides a refrigeration device including the above box body assembly, that is, adopting the above door, box body, and hinge assembly between the door and the box body. The refrigeration device may be a refrigerator, freezer, wine cabinet, fresh food cabinet, etc.

[0186] The above are only embodiments of the present application, and the scope of the claims of the present application is not limited thereby. Equivalent configurations or equivalent flow conversions made using the content of the specification and drawings of the present application, or its direct or indirect transfer to other related technical fields, shall similarly be included in the scope of the claims of the present application.

Claims

1. A box body having an opening for forming a storage space; A door for closing the opening; a hinge assembly provided on a pivot side of the box body so as to pivotally connect the box body and the door; The door has an inner edge and an outer edge on the pivot side, and further includes a first reference plane that passes through the inner edge and is parallel to the plane where the opening is located when the door is in a closed state, and a second reference plane that passes through the outer edge and is perpendicular to the plane where the opening is located when the door is in a closed state, and the first reference plane and the second reference plane are stationary with respect to the box body during the process of opening the door relative to the box body, The hinge assembly is for forming a first hinge connection point and a second hinge connection point, the second hinge connection point is provided farther from the outer edge than the first hinge connection point, and in the process of the door being opened relative to the box under the action of the hinge assembly, the door has a first movement direction relative to the box at the first hinge connection point and a second movement direction relative to the box at the second hinge connection point, and a first reference plane is formed between the first movement direction and the second movement direction, respectively. a first included angle and a second included angle, the first included angle being expressed in positive number format when the first direction of movement is disposed away from the first reference plane, and the absolute value of the first included angle being less than 90 degrees when the first direction of movement is disposed away from the second reference plane, and the second included angle being expressed in positive number format when the second direction of movement is disposed away from the second reference plane, and the absolute value of the second included angle being less than 90 degrees when the second direction of movement is disposed away from the second reference plane; the second included angle is expressed in the positive number format and is smaller than 90 degrees, the first included angle gradually decreases from a first initial angle expressed in the positive number format and smaller than 90 degrees to a first end angle, and a difference between the second included angle and the first included angle gradually increases at a same actual opening angle of the door relative to the box, during the process of opening the door from a closed state to a first opening angle.

2. 2. The box assembly according to claim 1, wherein the hinge assembly comprises an outer groove and an outer shaft mounted on the door and the box, respectively, and an inner groove and an inner shaft mounted on the door and the box, respectively, the outer groove and the outer shaft being fitted together to form the first hinge connection point at the axis of the outer shaft, and the inner groove and the inner shaft being fitted together to form the second hinge connection point at the axis of the inner shaft.

3. The box assembly according to claim 2, characterized in that the outer shaft body is installed on the box, the outer groove body is installed on the door, the first initial angle is between +55 degrees and +45 degrees, and the first end angle is between +1 degree and +11 degrees.

4. The box assembly according to claim 2, characterized in that the outer shaft body is installed on the door, the outer groove body is installed on the box, the first initial angle is between +33 degrees and +23 degrees, and the first end angle is between -5 degrees and -15 degrees.

5. The box assembly according to claim 3 or 4, characterized in that the inner shaft body is installed in the box body, the inner groove body is installed in the door, and the second included angle is between +78 degrees and +64 degrees.

6. The box assembly of claim 5, characterized in that the inner shaft body and the outer shaft body are installed in the box body, the inner groove body and the outer groove body are installed in the door, the distance of the axis of the inner shaft body to the first reference plane is between 0.75t and 0.77t, the distance of the axis of the inner shaft body to the second reference plane is between 0.79t and 0.81t, the distance of the outer shaft body to the first reference plane is between 0.59t and 0.61t, and the distance of the outer shaft body to the second reference plane is between 0.49t and 0.51t.

7. The box assembly of claim 5, characterized in that the inner shaft body and the outer shaft body are installed in the box body, the inner groove body and the outer groove body are installed in the door, and when the door is opened from the closed state to the first opening angle, the ratio of the motion path length of the inner shaft body relative to the inner groove body to the motion path length of the outer shaft body relative to the outer groove body is between 1.2 and 1.

4.

8. The inner shaft and the outer groove are installed in the box, the inner groove and the outer shaft are installed in the door, the distance of the axis of the inner shaft to the first reference plane is between 0.75t and 0.77t, and the distance of the axis of the inner shaft to the second reference plane is between 0.79t and 0.81t, when the door is in a closed state, the distance of the axis of the outer shaft to the first reference plane is between 0.55t and 0.57t, and the distance of the axis of the outer shaft to the second reference plane is between 0.22t and 0.24t, when the door is at a first open angle, the distance of the axis of the outer shaft to the first reference plane is between 0.59t and 0.61t, and the distance of the axis of the outer shaft to the second reference plane is between 0.40t and 0.42t.

9. The box assembly of claim 5, characterized in that the inner shaft body and the outer groove body are installed in the box body, the inner groove body and the outer shaft body are installed in the door, and when the door is opened from the closed state to the first opening angle, the ratio of the motion path length of the inner shaft body relative to the inner groove body to the motion path length of the outer shaft body relative to the outer groove body is between 1.5 and 1.

7.

10. The box assembly according to claim 13 or 14, characterized in that the inner shaft body is installed on the door, the inner groove body is installed on the box, and the second included angle is between +0 degrees and +18 degrees and gradually decreases.

11. The box assembly of claim 10, wherein the inner groove and the outer shaft are installed in the box, the inner shaft and the outer groove are installed in the door, the outer shaft has a distance to a first reference plane between 0.59t and 0.61t and a distance to the second reference plane between 0.49t and 0.51t, and when the door is in a closed state, the axis of the inner shaft has a distance to the first reference plane between 0.21t and 0.23t and a distance to the second reference plane between 0.17t and 0.19t, and when the door is at a first open angle, the axis of the inner shaft has a distance to the first reference plane between 0.27t and 0.29t and a distance to the second reference plane between 0.52t and 0.54t.

12. The box assembly of claim 10, characterized in that the inner groove and the outer shaft are installed in the box, the inner shaft and the outer groove are installed in the door, and when the door is opened from the closed state to the first opening angle, the ratio of the motion path length of the inner shaft relative to the inner groove and the motion path length of the outer shaft relative to the outer groove is between 1.5 and 1.

7.

13. When the inner groove body and the outer groove body are installed in the box body, the inner shaft body and the outer shaft body are installed in the door, and the door is in a closed state, the distance of the axis of the inner shaft body to the first reference plane is between 0.21t and 0.23t, the distance of the axis of the inner shaft body to the second reference plane is between 0.17t and 0.19t, and the distance of the axis of the outer shaft body to the first reference plane is between 0.55t and 0.57t, and the distance of the axis of the outer shaft body to the second reference plane is between 0.22t and 0.24t.

11. The box assembly according to claim 10, wherein, when the door is at a first open angle, the distance of the axis of the inner shaft to the first reference plane is between 0.27t and 0.29t and the distance of the axis of the inner shaft to the second reference plane is between 0.52t and 0.54t, and the distance of the axis of the outer shaft to the first reference plane is between 0.59t and 0.61t and the distance of the axis of the outer shaft to the second reference plane is between 0.40t and 0.42t.

14. The box assembly of claim 10, characterized in that the inner groove body and the outer groove body are installed on the box body, the inner shaft body and the outer shaft body are installed on the door, and when the door is opened from the closed state to the first opening angle, the ratio of the motion path length of the inner shaft body relative to the inner groove body to the motion path length of the outer shaft body relative to the outer groove body is between 1.8 and 2.

0.

15. 2. The box assembly according to claim 1, wherein the hinge assembly comprises a groove installed on the door and a shaft installed on the box, the groove and the shaft being fitted together to form the second hinge connection point at the axis of the shaft, and the hinge assembly further comprises a connecting rod having one end hinged to the door to form the first hinge connection point and the other end hinged to the box.

16. 16. The box assembly of claim 15, wherein the first initial angle is between +36 degrees and +26 degrees, the first end angle is between -5 degrees and +5 degrees, and the second included angle is between +78 degrees and +64 degrees.

17. 17. The box assembly of claim 16, wherein as the door is opened from the first opening angle to the second opening angle, the first included angle further decreases, and the second included angle, expressed in the positive number format, gradually increases from a second initial angle less than 90 degrees to a second end angle.

18. 17. The box assembly of claim 16, wherein the first included angle further decreases to be between -9 degrees and -19 degrees, the second initial angle is between +64 degrees and +74 degrees, and the second ending angle is between +108 degrees and +118 degrees.

19. 2. The box assembly of claim 1, wherein the first opening angle is between 25 degrees and 31 degrees.

20. 10. The box assembly of claim 1, wherein the door has a thickness of at least 2 centimeters.

21. A box body having an opening for forming a storage space; A door for closing the opening; a hinge assembly provided on a pivot side of the box body so as to pivotally connect the box body and the door; The door has an inner edge and an outer edge on the pivot side, and further includes a first reference plane that passes through the inner edge and is parallel to the plane where the opening is located when the door is in a closed state, and a second reference plane that passes through the outer edge and is perpendicular to the plane where the opening is located when the door is in a closed state, and the first reference plane and the second reference plane are stationary with respect to the box body during the process of opening the door relative to the box body, The hinge assembly is for forming a first hinge connection point and a second hinge connection point, the second hinge connection point is provided farther from the outer edge than the first hinge connection point, and in the process of the door being opened relative to the box under the action of the hinge assembly, the door has a first movement direction relative to the box at the first hinge connection point and a second movement direction relative to the box at the second hinge connection point, and a first reference plane is formed between the first movement direction and the second movement direction, respectively. a first included angle and a second included angle, the first included angle being expressed in positive number format when the first direction of movement is disposed away from the first reference plane, and the absolute value of the first included angle being less than 90 degrees when the first direction of movement is disposed away from the second reference plane, and the second included angle being expressed in positive number format when the second direction of movement is disposed away from the second reference plane, and the absolute value of the second included angle being less than 90 degrees when the second direction of movement is disposed away from the second reference plane; and wherein, in the process of opening the door from a first opening angle to a second opening angle, the first included angle gradually increases from a second initial angle having an absolute value less than 90 degrees to a second end angle, the second included angle gradually increases from a third initial angle expressed in the positive number format and less than 90 degrees to a third end angle, and a difference between the second included angle and the first included angle at a same actual opening angle of the door relative to the box at least first gradually increases.

22. 22. The box assembly of claim 21, wherein a difference between the second included angle and the first included angle at the same actual opening angle of the door relative to the box first gradually increases and then gradually decreases.

23. 23. The box assembly of claim 22, wherein an actual opening angle of the door relative to the box corresponding to a transition position from a gradual increase to a gradual decrease of the difference is between 50 degrees and 60 degrees.

24. 22. The box assembly of claim 21, wherein the hinge assembly comprises an outer groove and an outer shaft mounted on the door and the box, respectively, and an inner groove and an inner shaft mounted on the door and the box, respectively, the outer groove and the outer shaft being fitted together to form the first hinge connection point at the axis of the outer shaft, and the inner groove and the inner shaft being fitted together to form the second hinge connection point at the axis of the inner shaft.

25. The box assembly of claim 24, wherein the outer shaft body is installed on the box, the outer groove body is installed on the door, the second initial angle is between +1 degree and +11 degree, and the second end angle is between +36 degree and +46 degree.

26. The box assembly of claim 24, wherein the outer shaft body is installed on the door, the outer groove body is installed on the box, the second initial angle is between -5 degrees and -15 degrees, and the second end angle is between +37 degrees and +47 degrees.

27. The box assembly according to claim 25 or 26, characterized in that the inner shaft body is installed on the box body, the inner groove body is installed on the door, the third initial angle is between +65 degrees and +75 degrees, and the third end angle is between +108 degrees and +118 degrees.

28. The box assembly of claim 27, characterized in that the inner shaft body and the outer shaft body are installed in the box body, the inner groove body and the outer groove body are installed in the door, the distance of the axis of the inner shaft body to the first reference plane is between 0.75t and 0.77t, the distance of the axis of the inner shaft body to the second reference plane is between 0.79t and 0.81t, the distance of the outer shaft body to the first reference plane is between 0.59t and 0.61t, and the distance of the outer shaft body to the second reference plane is between 0.49t and 0.51t.

29. 28. The box assembly of claim 27, wherein the inner shaft and the outer groove are installed in the box, the inner groove and the outer shaft are installed in the door, the distance of the axis of the inner shaft to the first reference plane is between 0.75t and 0.77t, and the distance of the axis of the inner shaft to the second reference plane is between 0.79t and 0.81t, when the door is at a first opening angle, the distance of the axis of the outer shaft to the first reference plane is between 0.59t and 0.61t, and the distance of the axis of the outer shaft to the second reference plane is between 0.40t and 0.42t, when the door is at a second opening angle, the distance of the axis of the outer shaft to the first reference plane is between 0.59t and 0.61t, and the distance of the axis of the outer shaft to the second reference plane is between 0.49t and 0.51t.

30. The box assembly of claim 27, characterized in that when the door is opened from the first opening angle to the second opening angle, the ratio of the length of the movement path of the inner shaft body relative to the inner groove body to the length of the movement path of the outer shaft body relative to the outer groove body is between 2.1 and 2.

3.

31. The box assembly according to claim 25 or 26, characterized in that the inner shaft body is installed on the door, the inner groove body is installed on the box, the third initial angle is between 0 degrees and +10 degrees, and the third end angle is between +45 degrees and +55 degrees.

32. 32. The box assembly of claim 31, wherein the inner groove and the outer shaft are installed in the box, the inner shaft and the outer groove are installed in the door, the outer shaft has a distance to a first reference plane between 0.59t and 0.61t and a distance to the second reference plane between 0.49t and 0.51t, when the door is at a first opening angle, the axis of the inner shaft has a distance to the first reference plane between 0.27t and 0.29t and a distance to the second reference plane between 0.52t and 0.54t, when the door is at a second opening angle, the axis of the inner shaft has a distance to the first reference plane between 0.37t and 0.39t and a distance to the second reference plane between 0.76t and 0.78t.

33. When the inner groove body and the outer groove body are installed on the box body, the inner shaft body and the outer shaft body are installed on the door, and the door is at a first opening angle, the distance of the axis of the inner shaft body to the first reference plane is between 0.27t and 0.29t, the distance of the axis of the inner shaft body to the second reference plane is between 0.52t and 0.54t, and the distance of the axis of the outer shaft body to the first reference plane is between 0.59t and 0.61t, and the distance of the axis of the outer shaft body to the second reference plane is between 0.40t and 0.4 32. The box assembly of claim 31, wherein when the door is at the second open angle, the distance of the axis of the inner shaft to the first reference plane is between 0.37t and 0.39t and the distance of the axis of the inner shaft to the second reference plane is between 0.76t and 0.78t, and the distance of the axis of the outer shaft to the first reference plane is between 0.59t and 0.61t and the distance of the axis of the outer shaft to the second reference plane is between 0.49t and 0.51t.

34. The box assembly of claim 31, characterized in that when the door is opened from the first opening angle to the second opening angle, the ratio of the length of the movement path of the inner shaft body relative to the inner groove body to the length of the movement path of the outer shaft body relative to the outer groove body is between 3.0 and 3.

2.

35. 32. The cage assembly of claim 31, wherein the first opening angle is between 25 degrees and 31 degrees, and the second opening angle is between 57 degrees and 60 degrees.

36. 32. The box assembly of claim 31, wherein the door has a thickness of 2 centimeters or greater.

37. A box body having an opening for forming a storage space; A door for closing the opening; a hinge assembly provided on a pivot side of the box body so as to pivotally connect the box body and the door; the door has an inner edge and an outer edge on the pivot side, and the door is further provided with a first reference plane and a second reference plane, the first reference plane and the second reference plane passing through the inner edge when the door is in a closed state relative to the box and being parallel to the plane where the opening is located, and the second reference plane passing through the outer edge when the door is in a closed state relative to the box and being perpendicular to the plane where the opening is located, the first reference plane and the second reference plane being stationary relative to the box during the process of opening the door relative to the box, the hinge assembly is for forming a first hinge connection point and a second hinge connection point, the second hinge connection point is provided farther from the outer edge than the first hinge connection point, the first hinge connection point moves from a start position to an end position during a process in which the door is opened from a closed position to a maximum angle relative to the box under the action of the hinge assembly, and the door further includes a reference point that overlaps with one of the start position and the end position of the first hinge connection point, which is farthest from the second reference plane, and is stationary relative to the box during the opening process of the door, the reference point has a first perpendicular line to the outer edge and a first perpendicular distance along the first perpendicular line to the outer edge, the reference point has a second perpendicular line to the inner edge and a second perpendicular distance along the second perpendicular line to the inner edge, the first perpendicular line having a third included angle with respect to the first reference plane, and the second perpendicular line having a fourth included angle with respect to the first reference plane; In the process of opening the door from a closed state to a first opening angle relative to the box, the first vertical distance and the second vertical distance gradually decrease, the third included angle gradually decreases within a range of 0 degrees to 90 degrees, and the fourth included angle gradually increases within a range of 0 degrees to 90 degrees.

38. 38. The box assembly of claim 37, wherein the first vertical distance has a gradually increasing change range corresponding to each unit angle of opening of the door, and the second vertical distance has a gradually decreasing change range corresponding to each unit angle of opening of the door.

39. 40. The box assembly of claim 38, wherein the first vertical distance tapers from between 0.63t-0.65t to between 0.57t-0.59t, and the second vertical distance tapers from between 0.80t-0.78t to between 0.59t-0.61t, where t is a thickness of the door.

40. 40. The box assembly of claim 39, wherein the third included angle gradually decreases from between 39 degrees and 41 degrees to between 35 degrees and 37 degrees, and the fourth included angle gradually increases from between 49 degrees and 51 degrees to between 79 degrees and 81 degrees.

41. 38. The box assembly of claim 37, wherein a first product exists between the first perpendicular distance and a cosine value of the third included angle, and a difference between a maximum value and a minimum value of the first product is less than 0.1t as the door opens from a closed state to a first open angle relative to the box, where t is a thickness of the door.

42. 42. The box assembly of claim 41, wherein the first volume is constant or decreases gradually.

43. 38. The box assembly of claim 37, wherein a second product exists between the second perpendicular distance and a sine of the fourth included angle, and a difference between a maximum value and a minimum value of the second product is less than 0.1t as the door opens from a closed state to a first open angle relative to the box, where t is a thickness of the door.

44. 44. The box assembly of claim 43, wherein the second volume is constant or tapers off.

45. 38. The box assembly of claim 37, wherein the hinge assembly comprises an outer shaft body mounted on the box body and an outer groove body mounted on the door, the outer groove body and the outer shaft body are fitted together to form the first hinge connection point, and the reference point overlaps with the axis of the outer shaft body.

46. The box assembly of claim 37, wherein the hinge assembly comprises an outer shaft body mounted on the door and an outer groove body mounted on the box body, the outer groove body and the outer shaft body are fitted together to form the first hinge connection point, and the reference point overlaps with the axis of the outer shaft body when the outer shaft body is at the end position of the outer groove body.

47. 38. The box assembly of claim 37, wherein under a same actual opening angle of the door, the first vertical distance is less than the second vertical distance and the third included angle is less than the fourth included angle.

48. 38. The box assembly of claim 37, wherein the door has a thickness of 2 centimeters or greater.

49. A box body having an opening for forming a storage space; A door for closing the opening; a hinge assembly provided on a pivot side of the box body so as to pivotally connect the box body and the door; The door has an inner edge and an outer edge on the pivot side, and further includes a first reference plane that passes through the inner edge and is parallel to the plane where the opening is located when the door is in a closed state, and a second reference plane that passes through the outer edge and is perpendicular to the plane where the opening is located when the door is in a closed state, and the first reference plane and the second reference plane are stationary with respect to the box body during the process of opening the door relative to the box body, the hinge assembly is for forming a first hinge connection point and a second hinge connection point, the second hinge connection point is provided farther from the outer edge than the first hinge connection point, the first hinge connection point moves from a start position to an end position during a process in which the door is opened from a closed position to a maximum angle relative to the box under the action of the hinge assembly, and the door further includes a reference point that overlaps with one of the start position and the end position of the first hinge connection point, which is farthest from the second reference plane, and is stationary relative to the box during the opening process of the door, the reference point has a first perpendicular line to the outer edge and a first perpendicular distance along the first perpendicular line to the outer edge, the reference point has a second perpendicular line to the inner edge and a second perpendicular distance along the second perpendicular line to the inner edge, the first perpendicular line having a third included angle with respect to the first reference plane, and the second perpendicular line having a fourth included angle with respect to the first reference plane; a first vertical distance gradually decreases, a third included angle gradually decreases within a range of 0 degrees to 90 degrees, a fourth included angle gradually increases, and the fourth included angle gradually increases and exceeds 90 degrees at least within a predetermined angle range before the second opening angle, and the second vertical distance gradually increases within the predetermined angle range, during a process in which the door is opened from a first opening angle to a second opening angle with respect to the door.

50. 50. The cage assembly of claim 49, wherein the fourth included angle gradually increases from less than 90 degrees to greater than 90 degrees, and the second perpendicular distance first gradually decreases and then gradually increases.

51. 51. The box assembly of claim 50, wherein the first vertical distance gradually decreases from between 0.57t and 0.59t to between 0.50t and 0.52t, and the second vertical distance gradually increases from between 0.59t and 0.61t, where t is a thickness of the door.

52. 52. The box assembly of claim 51, wherein the third included angle gradually decreases from between 35 degrees and 37 degrees to between 2 degrees and 4 degrees, and the fourth included angle gradually increases from between 79 degrees and 81 degrees to between 125 degrees and 127 degrees.

53. 50. The box assembly of claim 49, wherein a first product exists between the first perpendicular distance and a cosine value of the third included angle, and a difference between a maximum value and a minimum value of the first product is less than 0.1t as the door opens from a first opening angle to a second opening angle relative to the box, where t is a thickness of the door.

54. 54. The box assembly of claim 53, wherein the first volume is constant or decreases gradually.

55. 50. The box assembly of claim 49, wherein a second product exists between the second perpendicular distance and a sine of the fourth included angle, and the second product becomes smaller at least within the predetermined angle range as the door opens from a first opening angle to a second opening angle relative to the box.

56. 50. The box assembly of claim 49, wherein a difference between a second product when the door is at the second open angle and a second product when the door is at the first open angle is not greater than -0.1t, where t is a thickness of the door.

57. 56. The box assembly of claim 55, wherein the second product gradually increases in a range of change corresponding to each unit angle of opening of the door.

58. 50. The box assembly of claim 49, wherein the hinge assembly comprises an outer shaft body mounted on the box body and an outer groove body mounted on the door, the outer groove body and the outer shaft body are fitted together to form the first hinge connection point, and the reference point overlaps with the axis of the outer shaft body.

59. The box assembly of claim 49, characterized in that the hinge assembly comprises an outer shaft body installed on the door and an outer groove body installed on the box body, the outer groove body and the outer shaft body are fitted together to form the first hinge connection point, and the reference point overlaps with the axis of the outer shaft body when the outer shaft body is at the end position of the outer groove body.

60. 50. The box assembly of claim 49, wherein under a same actual opening angle of the door, the first vertical distance is less than the second vertical distance and the third included angle is less than the fourth included angle.

61. 50. The box assembly of claim 49, wherein the door has a thickness of 2 centimeters or greater.

62. A refrigeration appliance comprising a box assembly according to any one of claims 1 to 61.

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