Hinge mechanism and box body assembly

Abstract

The utility model relates to a hinge mechanism and a box assembly. The hinge mechanism is used for being arranged on the box body assembly. The box body assembly comprises a box body and a door body. The hinge mechanism comprises a fixing base, two connecting rod assemblies and a reinforcing piece. The fixing base is used for being arranged on a box body. The two connecting rod assemblies are located on the same side of the fixing base, one ends of the two connecting rod assemblies are rotationally connected with the fixing base, and the other ends are rotationally connected to the door body. The reinforcer is arranged on the fixed seat. The reinforcing piece is located at the joint of the box body and the fixing base. Due to the arrangement of the reinforcing piece, the local thickness of the fixing base in the direction perpendicular to the box body is equivalently increased, the local rigidity and the bearing capacity of the fixing base can be effectively improved, and meanwhile the size of the hinge mechanism in the thickness direction is not increased. The overall bearing capacity of the hinge mechanism can be effectively improved by improving the structural strength of the fixing base, and the bearing capacity of the hinge mechanism is ensured when the thickness size of the hinge mechanism is limited.

Description

Technical Field

[0001] The present application belongs to the technical field related to box assemblies, and specifically relates to a hinge mechanism and a box assembly. Background Art

[0002] Multi-link hinges can meet the needs of more door body trajectories, but they also cause the disadvantages of complex structure and long cantilever when opened. In order to ensure its load-bearing capacity, the thickness of multi-link hinges is relatively large. In the scenario of refrigerators with upper and lower doors, two multi-link hinges are required at the center beam to cooperate with the opening and closing of the upper and lower doors. The overall thickness of the hinge is relatively large, which easily increases the thickness of the refrigerator center beam and affects the usable volume of the refrigerator.

[0003] Therefore, in order not to increase the thickness of the refrigerator center beam, how to ensure the bearing capacity of the hinge mechanism when the thickness of the hinge mechanism is limited is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The present application provides a hinge mechanism and a box assembly to solve the technical problem of ensuring the bearing capacity of the hinge mechanism when the thickness of the hinge mechanism is limited.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: a hinge mechanism, used to be set on a box assembly, the box assembly includes a box body and a door body, the hinge mechanism includes: a fixed seat, used to be set on the box body; two connecting rod assemblies, the two connecting rod assemblies are located on the same side of the fixed seat, one end of the connecting rod assembly is used for rotational connection with the fixed seat, and the other end is used to connect the door body; a reinforcement member, arranged on the fixed seat; the reinforcement member is located at the connection between the box body and the fixed seat.

[0006] According to one embodiment of the present application, the reinforcement member includes a reinforcement plate, which is arranged on the side of the fixing seat away from the connecting rod assembly. The box body is provided with a recessed portion corresponding to the reinforcement plate, and the reinforcement plate is at least partially embedded in the recessed portion.

[0007] According to one embodiment of the present application, the connecting rod assembly includes a movable seat, the movable seat is used to be set on the door body, and the connecting rod assembly is used to connect one end of the door body to the movable seat for rotation.

[0008] According to one embodiment of the present application, the area of ​​the first surface of the fixing seat in contact with the reinforcing plate is greater than or equal to the area of ​​the second surface of the reinforcing plate in contact with the first surface.

[0009] According to one embodiment of the present application, the ratio of the area of ​​the second surface to the area of ​​the first surface is 0.6-1.

[0010] According to one embodiment of the present application, the reinforcing plate is provided with a plurality of through holes, the fixing seat is formed with a plurality of openings corresponding to the through holes, and the hinge mechanism is fixed to the box body by fasteners which are sequentially passed through the openings and the through holes.

[0011] According to one embodiment of the present application, the fastener includes a screw segment and a nut segment, the diameter of the nut segment is larger than the diameter of the screw segment, the through hole includes a circular hole and a strip hole, the circular hole and the strip hole are connected, the aperture of the circular hole is larger than the diameter of the nut segment, and the aperture of the strip hole is larger than the diameter of the screw segment and smaller than the diameter of the nut segment.

[0012] According to one embodiment of the present application, one of the openings is located at an end of the fixing seat away from the hinged end, and the opening extends to the edge of the fixing seat, and the through hole is located at an end of the reinforcing plate away from the fixing seat and the connecting rod assembly is hinged, and the circular hole extends to the edge of the reinforcing plate.

[0013] According to one embodiment of the present application, the hinge mechanism further includes a fixed base, the fixed base is disposed in the box, and the fixed base is disposed corresponding to the fixed seat, and the fixed seat is fixedly connected to the fixed base via the fastener.

[0014] According to one embodiment of the present application, the fixed base includes a fixed bottom plate and a plurality of bending plates, the fixed bottom plate is arranged on the box body, the plurality of bending plates are all connected to the fixed bottom plate, and the bending plates are bent toward a side away from the fixed bottom plate.

[0015] To solve the above technical problems, another technical solution adopted in the present application is: a box assembly, which includes: a box; a door body, used to open or close the box; a hinge mechanism as described in any of the above, wherein the hinge mechanism is used to pivotally connect the box and the door body.

[0016] The beneficial effects of the present application are as follows: the hinge mechanism in the present application is used to be arranged in a box assembly. The box assembly includes a box body and a door body. The hinge mechanism includes a fixed seat, two connecting rod assemblies and a reinforcement. Among them, the fixed seat is used to be arranged in the box body. The two connecting rod assemblies are located on the same side of the fixed seat, and one end of the two connecting rod assemblies is used for rotational connection with the fixed seat, and the other end is used for rotational connection to the door body. The reinforcement is arranged on the fixed seat. The reinforcement is located at the connection between the box body and the fixed seat. The hinge mechanism in the present application is provided with a reinforcement at the connection between the fixed seat and the box body, which is equivalent to increasing the local thickness of the fixed seat in the direction perpendicular to the box body, which can effectively improve the local stiffness and load-bearing capacity of the fixed seat without increasing the size of the hinge mechanism in the thickness direction. The improvement of the structural strength of the fixed seat can effectively improve the overall load-bearing capacity of the hinge mechanism, and ensure the load-bearing capacity of the hinge mechanism when the thickness size of the hinge mechanism is limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0019] Figure 1 It is a partial structural schematic diagram of an embodiment of a box assembly of the present application;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of a hinge mechanism of the present application;

[0021] Figure 3 It is a structural schematic diagram of a box plate of an embodiment of a box assembly of the present application;

[0022] Figure 4 It is a partial structural schematic diagram of an embodiment of a hinge mechanism of the present application;

[0023] Figure 5 It is a schematic diagram of the exploded structure of an embodiment of a box assembly of the present application. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is understandable that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] The multi-link hinge can meet the needs of more door trajectories, but it also has the disadvantages of a more complex structure and a longer cantilever when opened. In order to ensure its load-bearing capacity, the multi-link hinge has a larger thickness.

[0029] Existing refrigerators with upper and lower double doors often require two multi-link hinges at the center beam to cooperate with the opening of the refrigerator and freezer doors. In order to cooperate with the installation of the multi-link hinge, the required thickness of the refrigerator center beam is relatively large. When the height of the refrigerator is constant, the greater the thickness at the center beam, the smaller the storage space of the refrigerator will be. To solve this problem, one way is to reduce the thickness of the multi-link hinge at the center beam, so that the thickness of the multi-link hinge at the center beam is different from that of the conventional multi-link hinge at the top or bottom of the box, so as to reduce the thickness requirement of the center beam. However, the reduction of the thickness of the multi-link hinge at the center beam will weaken its bearing capacity.

[0030] The hinge mechanism in the embodiment of the present application can effectively improve the rigidity and load-bearing capacity of the hinge mechanism without increasing the overall thickness of the hinge, so that it can meet the use requirements under the thickness size limit of the middle beam, and achieve the effect of ensuring the volume of the box without increasing the thickness size of the middle beam. Of course, in some specific implementations, the hinge mechanism in the embodiment of the present application can reduce the thickness size of the hinge mechanism while ensuring the load-bearing capacity, so as to meet the use in the scenario of reducing the thickness of the middle beam and improve the volume ratio of the refrigerator.

[0031] It should be noted that the thickness at the center beam position in the present application is the thickness in the height direction of the refrigerator. Similarly, the thickness of the multi-link hinge is also the thickness in the height direction of the refrigerator.

[0032] See also Figure 1 , Figure 1 1 is a schematic diagram of the overall structure of an embodiment of a box assembly of the present application. An embodiment of the present application provides a box assembly 10. The box assembly 10 includes a box 13, a door (not shown in the figure), and a hinge mechanism 11. The door is used to open or close the box 13, and the hinge mechanism 11 is used to pivotally connect the box 13 and the door. At this time, the door can be opened or closed relative to the box 13 under the action of the hinge mechanism 11.

[0033] It should be noted that the box assembly 10 may be a refrigeration device such as a refrigerator, or the box assembly 10 may also be a cabinet, etc., which is not limited here. In this embodiment, the hinge mechanism 11 is applied to the box assembly 10 and the box assembly 10 is a refrigerator.

[0034] Specifically, see Figure 2 , Figure 2 It is a front structural schematic diagram of an embodiment of the hinge mechanism of the present application.

[0035] Another embodiment of the present application provides a hinge mechanism 11. The hinge mechanism 11 is used to be arranged on the box assembly 10, and the box assembly 10 includes a box body 13 and a door body. The hinge mechanism 11 includes a fixed seat 111, two connecting rod assemblies 112 and a reinforcement 113. Among them, the fixed seat 111 is used to be arranged on the box body 13, and the two connecting rod assemblies 112 are both located on the same side of the fixed seat 111. One end of the connecting rod assembly 112 is used to be rotatably connected to the fixed seat 111, and the other end is used to be connected to the door body. The reinforcement 113 is arranged on the fixed seat 111, and the reinforcement 113 is located at the connection between the box body 13 and the fixed seat 111.

[0036] The hinge mechanism 11 is usually applied to a double-door refrigerator, and the hinge mechanism 11 is often arranged at the middle beam position of the double-door refrigerator. Two connecting rod assemblies 112 are arranged on the same side of the fixing seat 111, which can realize the control of the upper and lower door bodies. The upper and lower door bodies can be opened or closed relative to the box body 13 under the action of the two connecting rod assemblies 112. In the embodiment of the present application, the two connecting rod assemblies 112 share a fixing seat 111. Compared with two independent multi-link hinges, the hinge mechanism 11 in the embodiment of the present application can compress the dimension in the thickness direction.

[0037] The inventor of the present application has found that at this time, at the center beam position of the refrigerator, the gravity that the hinge mechanism 11 has to bear is the total gravity of the upper and lower door bodies, and the gravity borne by the fixed seat 111 is relatively large, and its force condition is also relatively complex. Therefore, the rigidity of the fixed seat 111 is very important to the bearing capacity of the hinge mechanism 11. The hinge mechanism 11 in the embodiment of the present application is provided with a reinforcement 113 at the connection between the fixed seat 111 and the box body 13, which is equivalent to increasing the local thickness of the fixed seat 111 in the direction perpendicular to the box body 13, which can effectively improve the local rigidity and bearing capacity of the fixed seat 111, while not increasing the size of the hinge mechanism 11 in the thickness direction. The improvement of the structural strength of the fixed seat 111 can effectively improve the overall bearing capacity of the hinge mechanism 11, and ensure the bearing capacity of the hinge mechanism 11 when the thickness size of the hinge mechanism 11 is limited.

[0038] Please continue reading Figures 1 to 4 , Figure 3 It is a partial structural schematic diagram of an embodiment of a box assembly of the present application; Figure 4 It is a partial structural diagram of an embodiment of the hinge mechanism of the present application.

[0039] Further, the reinforcing member 113 is at least partially embedded in the box body 13, and the reinforcing member 113 includes a reinforcing plate 114. Among them, the reinforcing plate 114 is arranged on the side of the fixing seat 111 away from the connecting rod assembly 112, and a recessed portion 115 is provided at the box body 13 corresponding to the reinforcing plate 114. The reinforcing plate 114 is at least partially embedded in the recessed portion 115. The setting of the recessed portion 115, on the one hand, can play a role of preliminary positioning and preliminary limiting when the hinge mechanism 11 is installed on the box body 13. Specifically, when the hinge mechanism 11 is installed, by placing the reinforcing plate 114 corresponding to the recessed portion 115, the entire hinge mechanism 11 and the box body 13 can be preliminarily positioned at this time, and then the hinge mechanism 11 and the box body 13 are fixed by fasteners (not shown in the figure) so as to realize the rapid installation of the hinge mechanism 11. Therefore, the setting of the recessed portion 115 can well improve the installation efficiency of the hinge mechanism 11. On the other hand, the setting of the recessed portion 115 can also utilize the local space of the box body 13 to place the reinforcing plate 114 at least partially in the recessed portion 115, and the reinforcing plate 114 will not be exposed outside the box body 13 to affect the aesthetics of the box body 13. Therefore, the reinforcing plate 114 is at least partially set in the recessed portion 115, which can improve the installation efficiency while ensuring the aesthetics of the box body 13.

[0040] Optionally, in some other embodiments, the reinforcement 113 may also be implemented by a reinforcement block or other forms of reinforcement, which will not be described in detail here.

[0041] It should be noted that in the embodiments of the present application, the reinforcing plate 114 and the fixing seat 111 can be connected by welding or riveting. The connection strength between the reinforcing plate 114 and the fixing seat 111 is high, and the reinforcing plate 114 and the fixing seat 111 are combined into one, thereby effectively improving the rigidity of the fixing seat 111.

[0042] In another embodiment of the present application, the connecting rod assembly 112 includes a movable seat 1121. The movable seat 1121 is used to be arranged on the door body, and one end of the connecting rod assembly 112 used to connect the door body is hinged to the movable seat 1121. The arrangement of the movable seat 1121 can make the movement of the connecting rod assembly 112 more stable during the process of opening the door body relative to the box body 13, and also make the connection between the connecting rod assembly 112 and the door body more stable.

[0043] Furthermore, in another embodiment of the present application, the area of ​​the first surface where the fixing seat 111 and the reinforcing plate 114 are attached is greater than or equal to the area of ​​the second surface (not shown in the figure) where the reinforcing plate 114 is attached to the first surface A. In this case, the reinforcing plate 114 will not extend outside the fixing seat 111, which can well improve the aesthetics of the hinge mechanism 11 installed on the box body 13.

[0044] In a specific embodiment, the ratio of the area of ​​the second surface of the reinforcing plate 114 to the area of ​​the first surface A of the fixing seat 111 is 0.6-1. When the area of ​​the second surface is less than 0.6 of the area of ​​the first surface A, the overall area of ​​the reinforcing plate 114 is small, and the range of local stiffness improvement of the fixing seat 111 is relatively small. When the area of ​​the second surface is greater than 1 of the area of ​​the first surface A, the area of ​​the reinforcing plate 114 is too large, which will cause the reinforcing plate 114 to be partially exposed outside the fixing seat 111 when the hinge mechanism 11 is installed in the box 13, thereby affecting the aesthetics of the box assembly 10. Therefore, when the ratio of the area of ​​the second surface to the area of ​​the first surface A is 0.6-1, the reinforcing plate 114 can not only effectively enhance the local height of the fixing seat 111 to improve the bearing capacity of the hinge mechanism 11, but also prevent the reinforcing plate 114 from being exposed outside the fixing seat 111, thereby ensuring the overall aesthetics of the box assembly 10.

[0045] In one embodiment of the present application, a plurality of through holes 1141 are formed on the reinforcing plate 114 , a plurality of openings 1111 are formed at the fixing seat 111 corresponding to the through holes 1141 , and the fixing seat 111 is fixed to the box body by fasteners which pass through the openings 1111 and the through holes 1141 in sequence.

[0046] Specifically, the fastener includes a screw segment (not shown in the figure) and a nut segment (not shown in the figure), wherein the diameter of the nut segment is larger than the diameter of the screw segment, and the through hole 1141 includes a circular hole 1143 and a strip hole 1144, the circular hole 1143 and the strip hole 1144 are connected, the aperture of the circular hole 1143 is larger than the diameter of the nut segment, and the aperture of the strip hole 1144 is larger than the diameter of the screw segment and smaller than the diameter of the nut segment. In the process of installing the hinge mechanism 11, first, the fastener is fixed on the box body 13 to play a positioning role, and then the through hole 1141 of the fixing seat 111 passes through the nut segment of the fastener to preliminarily install the fixing seat 111 on the box body 13, and then the fixing seat 111 can be moved, at this time, the screw segment can be moved along the strip hole 1144 until the reinforcing plate 114 is just located in the recessed portion 115, and at this time, the fastener is tightened to ensure that the fixing seat 111 can be stably connected with the box body 13. Therefore, during the installation of the hinge mechanism 11, the hinge mechanism 11 is initially positioned by setting the circular hole 1143, and then the installation position of the hinge mechanism 11 is adjusted and fixed through the bar hole 1144. During the whole process, the installation can be more labor-saving and can save installation time.

[0047] Further, in another embodiment of the present application, one of the openings 1111 is located at one end of the fixing seat 111 away from the hinged end, the opening 1111 extends to the edge of the fixing seat 111, the through hole 1141 is located at one end of the reinforcing plate 114 away from the hinged end of the fixing seat 111 and the connecting rod assembly 112, and the circular hole 1143 extends to the edge of the reinforcing plate 114. In this case, the edges of the fixing seat 111 and the reinforcing plate 114 can be used to open the opening 1111 and the through hole 1141, which can well reduce the waste of materials. At the same time, since the connecting rod assembly 112 often has a certain thickness and volume, when the production personnel install the cover hinge mechanism 11, the through hole is inserted from the edge of the fixing seat 111 and the reinforcing plate 114, which can also prevent the production personnel's hands from being squeezed by the connecting rod assembly 112 during the initial fixation of the hinge mechanism 11, affecting the experience. Therefore, this mechanism can make the production personnel more labor-saving when performing the initial fixation of the hinge mechanism 11, so the mechanism is more ergonomically designed.

[0048] Please continue reading Figures 1 to 5 , Figure 5 It is a schematic diagram of the exploded structure of an embodiment of a box assembly of the present application.

[0049] In another embodiment of the present application, the hinge mechanism 11 also includes a fixed base 12. The fixed base 12 is arranged in the box body 13, and the fixed base 12 is arranged corresponding to the fixed seat 111, and the fixed seat 111 is fixedly connected to the fixed base 12 by a fastener. Specifically, since a foam layer of a certain thickness is formed in the box body 13, when the hinge mechanism 11 is installed, the fasteners are often inserted into the foam layer when inserted into the box body 13, and the foam layer often has a weak supporting effect. Therefore, when the weight of the door body is large, the hinge mechanism 11 may be displaced at this time. Therefore, the fixed base 12 supports the fixed seat 111, which can well improve the stability of the hinge mechanism 11 during use.

[0050] Specifically, the fixed base 12 includes a fixed bottom plate 121 and a plurality of bent plates 122. The fixed bottom plate 121 is disposed on the box body 13. The plurality of bent plates 122 are all connected to the fixed bottom plate 121, and the bent plates 122 are bent toward a side away from the fixed bottom plate 121. The fixed bottom plate 121 can play a certain supporting role for the plurality of bent plates 122, and the provision of the plurality of bent plates 122 can increase the contact area between the fixed base 12 and the foaming layer, thereby improving the stability of the fixed base 12 in the box body 13, and at this time, the hinge mechanism 11 can be more stable during use.

[0051] Preferably, the multiple bending plates 122 and the fixed bottom plate 121 can be connected by integral molding, in which case the structural strength is greater, and the structural stability of the fixed base 12 is better, so that the hinge mechanism 11 is more stable during use. Alternatively, the multiple bending plates 122 and the fixed bottom plate 121 can also be fixedly connected by welding, fasteners, etc., which are not limited here.

[0052] Furthermore, the reinforcing plate 114 is usually made of metal. Since metal materials tend to have high mechanical strength, good durability, are not prone to aging, are not easily damaged, and have good structural stability, they can increase the overall service life of the box assembly 10 and improve user experience.

[0053] Optionally, in some other embodiments, a steel structure or other high-strength structure may also be used, which will not be described in detail here.

[0054] It should be noted that the terms "horizontal", "vertical" and the like do not mean that the components are absolutely horizontal or vertical, but can be slightly tilted; the terms "parallel", "vertical" and the like do not mean that the components are absolutely parallel or vertical, but can form a certain angle deviation. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In addition, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the present application is usually placed when used, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0055] It is to be understood that the meaning of "plurality" herein is at least two, such as two, three, etc., unless there is a special limitation. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. The term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0056] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A hinge mechanism, characterized in that: Used to be arranged in a box assembly, the box assembly includes a box body and a door body, and the hinge mechanism includes: A fixing seat, used to be arranged on the box body; Two connecting rod assemblies, the two connecting rod assemblies are located on the same side of the fixing seat, one end of the connecting rod assembly is used for rotational connection with the fixing seat, and the other end is used for connecting with the door body; A reinforcement member is arranged on the fixing seat; the reinforcement member is located at the connection between the box body and the fixing seat.

2. The hinge mechanism according to claim 1, characterized in that: The reinforcement member includes a reinforcement plate, which is arranged on a side of the fixing seat away from the connecting rod assembly. The box body is provided with a recessed portion corresponding to the reinforcement plate, and the reinforcement plate is at least partially embedded in the recessed portion.

3. The hinge mechanism according to claim 1, characterized in that: The connecting rod assembly includes a movable seat, and the movable seat is used to be arranged on the door body. The connecting rod assembly is used to connect one end of the door body to the movable seat for rotation.

4. The hinge mechanism according to claim 2, characterized in that: The area of ​​the first surface of the fixing seat in contact with the reinforcing plate is greater than or equal to the area of ​​the second surface of the reinforcing plate in contact with the first surface.

5. The hinge mechanism according to claim 4, characterized in that: The ratio of the area of ​​the second surface to the area of ​​the first surface is 0.6-1.

6. The hinge mechanism according to claim 2, characterized in that: The reinforcing plate is provided with a plurality of through holes, the fixing seat is formed with a plurality of openings corresponding to the through holes, and the fixing seat is fixed to the box body by fasteners which penetrate through the openings and the through holes in sequence.

7. The hinge mechanism according to claim 6, characterized in that: The fastener includes a screw segment and a nut segment, the diameter of the nut segment is larger than the diameter of the screw segment, the through hole includes a circular hole and a strip hole, the circular hole and the strip hole are connected, the aperture of the circular hole is larger than the diameter of the nut segment, and the aperture of the strip hole is larger than the diameter of the screw segment and smaller than the diameter of the nut segment.

8. The hinge mechanism according to claim 7, characterized in that: One of the openings is located at an end of the fixing base away from the hinged end, and the opening extends to the edge of the fixing base. The through hole is located at an end of the reinforcing plate away from the hinged end of the fixing base and the connecting rod assembly, and the circular hole extends to the edge of the reinforcing plate.

9. The hinge mechanism according to claim 6, characterized in that: The hinge mechanism also includes a fixed base, which is arranged in the box body and corresponds to the fixed seat. The fixed seat is fixedly connected to the fixed base through the fastener.

10. The hinge mechanism according to claim 9, characterized in that: The fixed base includes a fixed bottom plate and a plurality of bending plates. The fixed bottom plate is arranged on the box body. The plurality of bending plates are all connected to the fixed bottom plate, and the bending plates are bent toward a side away from the fixed bottom plate.

11. A box assembly, characterized in that: The box assembly comprises: Box; A door body, used for opening or closing the box body; The hinge mechanism as described in any one of claims 1-10 is used to pivotally connect the box body and the door body.

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