Hinge assembly, method of mounting a hinge assembly, and container

Abstract

The application discloses a hinge assembly, a mounting method of the hinge assembly and a container. The hinge assembly comprises a hinge body, an upper hinge seat and a lower hinge seat. The hinge body comprises at least two guide grooves which extend along the height direction of the hinge body and are open to the left side or the right side. The upper hinge seat comprises at least one first extension arm, and the first extension arm is provided with a first hinge pin which is slidably and rotatably arranged in at least one of the guide grooves. The lower hinge seat comprises at least one second extension arm, and the second extension arm is provided with a second hinge pin which is slidably and rotatably arranged in at least another one of the guide grooves. The hinge body is slidably connected with the first extension arm and the second extension arm, and the hinge body, the first extension arm and the second extension arm are tightly matched with each other. The hinge assembly has a compact structure and no additional components are arranged outwardly, so that a large residual cavity is not formed between the hinge assembly, a small door and a side wall.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to hinges, and in particular to hinges for use in containers. BACKGROUND

[0002] The use of containers of all kinds is ubiquitous in the context of modern industrial production, being indispensable in the fields of warehousing, logistics, packaging, retail display, etc. Containers of plastic or plastic-steel composite are gradually being promoted as alternatives to other containers because of their recyclability, moisture resistance, chemical resistance, long service life and cleanability. Such containers mostly comprise a base and two opposing side panels, some types of which can be folded relative to the base. Optionally, the containers also have a lid. For containers with a volume exceeding 500 liters, in order to facilitate loading and unloading of goods, a small door is usually provided on the side panel. The small door can be flipped outward relative to the side panel, and such opening and closing action requires a connecting structure between the small door and the side panel.

[0003] However, existing connecting structures are generally bulky and not compact, leaving a large cavity between the connecting structure and the small door or side door, which can become a breeding ground for dirt and filth. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a hinge assembly, a method for installing a hinge assembly and a container, so that the structure of the hinge assembly is more compact.

[0005] To solve the above technical problems, the embodiments of the present application provide a hinge assembly, comprising:

[0006] a hinge body, the hinge body comprising at least two guide grooves, the guide grooves extending along the height direction of the hinge body, and each of the guide grooves being open to the left side or the right side;

[0007] an upper hinge seat, the upper hinge seat comprising at least one first extension arm, the first extension arm being provided with a first hinge pin, and the at least one first hinge pin being slidably and rotatably arranged in at least one of the guide grooves;

[0008] a lower hinge seat, the lower hinge seat comprising at least one second extension arm, the second extension arm being provided with a second hinge pin, and the at least one second hinge pin being slidably and rotatably arranged in at least another one of the guide grooves.

[0009] The hinge assembly comprises a hinge body, an upper hinge seat and a lower hinge seat. The hinge body comprises at least two guide grooves, each of which is open to the left or right side. The upper hinge seat comprises at least one first extension arm, and each first extension arm is provided with a first hinge pin which is slidably and rotatably arranged in the guide groove. That is, the upper hinge seat can slide up and down relative to the hinge body and can rotate relative to the hinge body about the axis of the first hinge pin. In addition, the lower hinge seat comprises at least one second extension arm, and each second extension arm is provided with a second hinge pin which is arranged in another guide groove and can slide and rotate in the guide groove. When the hinge assembly is assembled on the container, for example, the upper hinge seat is fixedly connected with the small door, and the lower hinge seat is fixedly connected with the side wall of the container. When the small door needs to be opened, the small door can be pulled to drive the upper hinge seat to move upward relative to the hinge body, and then the hinge body drives the lower hinge seat to move upward. At this time, the hinge assembly is pulled open, and then the hinge body rotates 90 degrees relative to the lower hinge seat, and the upper hinge seat rotates 90 degrees relative to the hinge body. At this time, the upper hinge seat and the lower hinge seat are parallel to each other, so that the small door and the side door are parallel to each other. Through the above mode, the small door can be pulled open, and the small door will not hinder the subsequent operation of the container. Moreover, the hinge body, the first extension arm and the second extension arm in the hinge assembly are slidably connected, and are tightly matched with each other, so that the structure is compact, and no additional components will protrude outward, so that a large remaining cavity is not formed between the hinge assembly and the small door and the side wall.

[0010] In an embodiment, at least one groove is formed in the hinge body in the height direction of the hinge body, and the upper end and / or the lower end of the groove is an open end.

[0011] The hinge body comprises at least two guide grooves formed in the left and right side walls of the hinge body and at least two groove walls of each groove. When the first hinge pin is located in the guide groove in the groove, the upper end of the groove is an open end. When the second hinge pin is located in the guide groove in the groove, the lower end of the groove is an open end.

[0012] In an embodiment, the upper hinge seat comprises an upper hinge seat body and a plurality of first extension arms extending downward from the upper hinge seat body, and each first extension arm is arranged side by side on the upper hinge seat body.

[0013] The lower hinge seat comprises a lower hinge seat body and a plurality of second extension arms extending upward from the lower hinge seat body, and each second extension arm is arranged side by side on the lower hinge seat body.

[0014] At least four of the guide slots are formed in the left and right side walls of the hinge body and the left and right side walls of each of the grooves.

[0015] In an embodiment, the grooves are a plurality of grooves, and the guide slots are formed in the left and right side walls of the hinge body and the left and right side walls of each of the grooves.

[0016] In an embodiment, two of the first hinge pins in two adjacent first extension arms are respectively located in two guide slots in the same groove, and / or two of the second hinge pins in two adjacent second extension arms are respectively located in two guide slots in the same groove.

[0017] In an embodiment, the adjacent two first extension arms and the adjacent two second extension arms are alternately located in each of the grooves.

[0018] In an embodiment, the grooves are two grooves, and the guide slots are formed in the left and right side walls of the hinge body and the left and right side walls of each of the grooves.

[0019] The first extension arm and the second extension arm are three, two of the first hinge pins in two adjacent first extension arms are respectively located in two guide slots in the same groove, and another first extension arm is separated from the adjacent two first extension arms, and the first hinge pin on the first extension arm is located in one of the guide slots on the left and right side walls of the hinge body.

[0020] Two of the second hinge pins in two adjacent second extension arms are respectively located in two guide slots in another groove, and another second extension arm is separated from the adjacent two second extension arms, and the second hinge pin on the second extension arm is located in the other guide slot on the left and right side walls of the hinge body, and the adjacent two second extension arms are operatively located between the adjacent two first extension arms and the other first extension arm.

[0021] In an embodiment, the guide slot slidably provided with the first hinge pin is provided with a first limiting portion relative to the proximal end of the upper hinge seat, and the first limiting portion is arranged to operatively engage or disengage with the first hinge pin when the first hinge pin slides to the proximal end of the upper hinge seat.

[0022] And / or, the guide slot slidably provided with the second hinge pin is provided with a second limiting part relative to the proximal end of the lower hinge seat, the second limiting part is arranged to be operatively engaged or disengaged with the second hinge pin when the second hinge pin slides to the proximal end of the guide slot relative to the lower hinge seat.

[0023] In an embodiment, the first extension arm and the second extension arm are both elastic arms, and any two adjacent first extension arms are spaced apart from each other, and any two adjacent second extension arms are spaced apart from each other.

[0024] In an embodiment, the first limiting part and the second limiting part are both limiting strips arranged in the guide slot, and the limiting strip and the guide slot relative to the proximal end of the upper hinge seat or the lower hinge seat enclose an engagement area for engaging the first hinge pin or the second hinge pin.

[0025] In an embodiment, the upper end and the lower end of the groove are both open ends, and the guide slot is a one-way slot, the upper end of the guide slot slidably provided with the first hinge pin is an open end; the lower end of the guide slot slidably provided with the second hinge pin is an open end.

[0026] In an embodiment, the thickness of the first extension arm is less than the distance between the upper hinge seat body of the upper hinge seat and the hinge body when the first hinge pin is at the proximal end of the guide slot relative to the upper hinge seat.

[0027] And / or, the thickness of the second extension arm is less than the distance between the lower hinge seat body of the lower hinge seat and the hinge body when the second hinge pin is at the proximal end of the guide slot relative to the lower hinge seat.

[0028] The application also provides a mounting method of a hinge assembly, which adopts the hinge assembly described above, and specifically includes the following steps:

[0029] Insert the first hinge pin on the first extension arm into the open end of the guide slot which is open to the side away from the upper hinge seat, and pull the upper hinge seat so that the first hinge pin slides along the guide slot to the proximal end of the guide slot relative to the upper hinge seat.

[0030] Insert the second extension arm between the upper hinge seat body and the hinge body, and then insert the second hinge pin of the second extension arm into the open end of the guide slot which is open to the side away from the lower hinge seat.

[0031] Alternatively, the second hinge pin on the second extension arm is inserted into the guide slot along the open end of the guide slot which opens towards the side away from the lower hinge seat, and the lower hinge seat is pulled so that the second hinge pin slides along the guide slot to the proximal end of the guide slot relative to the lower hinge seat;

[0032] The first extension arm is inserted between the lower hinge seat body and the hinge body, and the first hinge pin of the first extension arm is inserted into the guide slot along the open end of the guide slot which opens towards the side away from the upper hinge seat.

[0033] The present application also provides a container comprising four side panels, a base, and the hinge assembly according to any one of claims 1 to 7, each of the side panels being connected to the base, and at least one of the side panels being provided with a door;

[0034] The door is provided with a first mounting slot, one of the upper hinge seat or the lower hinge seat is clamped in the first mounting slot, the first extension arm extends at least partially out of the first mounting slot, the side panel is provided with a second mounting slot, the other of the upper hinge seat and the lower hinge seat is clamped in the second mounting slot, and the second extension arm extends at least partially out of the second mounting slot.

[0035] In an embodiment, the upper hinge seat and the lower hinge seat slide in the direction of approaching each other to the limit position to fold the hinge assembly, the hinge body is arranged to be partially located in the first mounting slot and partially located in the second mounting slot, the part of the first extension arm extending out of the first mounting slot is located in the second mounting slot, and the part of the second extension arm extending out of the first mounting slot is located in the first mounting slot.

[0036] The upper hinge seat and the lower hinge seat slide in the direction of moving away from each other to the preset position, the hinge body is disengaged from the first mounting slot and the second mounting slot, the first extension arm is disengaged from the second mounting slot, and the second extension arm is disengaged from the first mounting slot.

[0037] In an embodiment, the first mounting slot comprises a first main slot and a first side slot which communicates with the first main slot, the first main slot and the first side slot are arranged adjacent to each other in the direction perpendicular to the door, and the first side slot is arranged close to the direction inside the container, one of the upper hinge seat or the lower hinge seat is partially clamped in the first main slot, and the hinge body part is operatively located in the first side slot.

[0038] And / or, the second mounting slot comprises a second main slot and a second side slot in communication with the second main slot, the second main slot and the second side slot are arranged adjacent to each other in a direction perpendicular to the side plate, and the second side slot is arranged close to the direction inside the container, the other part of the upper hinge seat or the lower hinge seat is clamped in the second main slot, and the other part of the hinge body is operatively located in the second side slot. BRIEF DESCRIPTION OF DRAWINGS

[0039] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document. These example embodiments demonstrate, but do not limit, the scope of the embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like elements. Drawings in which the same reference numerals refer to same components throughout the various figures are not necessarily to scale.

[0040] Figure 1 is a structural schematic diagram of the container when the small door and the side door are closed in the embodiment of the present application;

[0041] Figure 2 is a structural schematic diagram of the container when the small door and the side door are assembled by the hinge assembly in the embodiment of the present application;

[0042] Figure 3 is a structural schematic diagram of the container when the small door is lifted relative to the side door in the embodiment of the present application; Figure 2 is an enlarged view of A in FIG. 1;

[0043] Figure 4 is a structural schematic diagram of the container when the small door is flipped relative to the side door in the embodiment of the present application;

[0044] Figure 5 is a structural schematic diagram of the container when the small door is further flipped relative to the side door in the embodiment of the present application; Figure 4 is an enlarged view of B in FIG. 2;

[0045] Figure 6 is a structural schematic diagram of the container when the small door is flipped relative to the side door in the embodiment of the present application;

[0046] Figure 7 is a structural schematic diagram of the container when the small door is further flipped relative to the side door in the embodiment of the present application;

[0047] Figure 8 is a structural schematic diagram of the container when the small door is flipped relative to the side door in the embodiment of the present application; Figure 7 is an enlarged view of C in FIG. 3;

[0048] Figure 9 is a structural schematic diagram of the hinge assembly when closed in the embodiment of the present application;

[0049] Figure 10 is a structural schematic diagram of the hinge body in the embodiment of the present application;

[0050] Figure 11 is a structural schematic diagram of the upper hinge seat in the embodiment of the present application;

[0051] Figure 12 is a structural schematic diagram of a lower hinge seat in an embodiment of the present application

[0052] Figure 13 is a schematic diagram of a hinge assembly in an embodiment of the present application from a closed state, a lifting state, a turning state, to an open state;

[0053] Figure 14 is a sectional view at A-A in Figure 13

[0054] Figure 15 is a sectional view at B-B in Figure 13

[0055] Figure 16 is a structural schematic diagram of a first hinge pin or a second hinge pin assembled with a guide slot;

[0056] Figure 17 is a structural schematic diagram of a small door in an embodiment of the present application;

[0057] Figure 18 is an enlarged view at D in Figure 17

[0058] Figure 19 is a structural schematic diagram of another structure of an upper hinge seat in an embodiment of the present application.

[0059] Explanation of reference signs:

[0060] 1, hinge body; 11, groove; 111, groove wall; 112, upper end of the groove; 113, lower end of the groove; 12, guide slot; 121, upper end of the guide slot; 122, lower end of the guide slot; 123, shielding part; 13, limiting strip; 14, clamping area; 15, connecting plate; 2, upper hinge seat; 21, first extending arm; 211, first hinge pin; 2111, connecting rod; 2112, connecting block; 22, upper hinge seat body; 221, first upper connecting arm; 222, first blocking arm; 3, lower hinge seat; 31, second extending arm; 311, second hinge pin; 32, lower hinge seat body; 321, second lower connecting arm; 322, second blocking arm; 4, small door; 41, first mounting slot; 411, first main slot; 412, first side slot; 5, side plate; 6, mounting hole; 7, clamping pin. DETAILED DESCRIPTION

[0061] ​​​In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the various embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the various embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be implemented even if these technical details are not presented and various changes and modifications based on the following various embodiments.

[0062] In the following description, for the purpose of illustrating the various disclosed embodiments, specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, persons of ordinary skill in the relevant art will recognize that embodiments can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, structures, and techniques associated with the present application are not shown or described in order to avoid needlessly obscuring the description of the embodiments.

[0063] Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to".

[0064] The various embodiments of the present application will be described in detail below with reference to the drawings, so that the objects, features and advantages of the present application can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present application, but merely to illustrate the essential spirit of the technical solutions of the present application.

[0065] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0066] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. It should be noted that the term "comprising" or "comprises" as used in this specification is used in the inclusive, open sense, and not the exclusive or exhaustive sense.

[0067] In the following description, in order to clearly show the structure and working mode of the present application, many directional words will be used for description, but the words of "front", "back", "left", "right", "outer", "inner", "outward", "inward", "up", "down" and the like should be understood as convenient words, and should not be understood as limiting words.

[0068] A hinge assembly of an embodiment of the present application is described below with reference to the accompanying drawings, Figures 9 to 15 As shown, the hinge assembly comprises a hinge body 1, an upper hinge seat 2 and a lower hinge seat 3, wherein the hinge body 1 comprises at least two guide grooves 12, each of which is long strip-shaped and extends along the height direction of the hinge body 1, and each of which is open to the left or right side, the upper hinge seat 2 comprises at least one first extension arm 21, which is provided with a first hinge pin 211 arranged perpendicularly to the first extension arm 21, and each of the first hinge pins 211 is slidably and rotatably arranged in a part of the guide grooves 12, and the lower hinge seat 3 comprises at least one second extension arm 31, which is provided with a second hinge pin 311 arranged perpendicularly to the second extension arm 31, and each of the second hinge pins 311 is slidably and rotatably arranged in another guide groove 12.

[0069] As shown, the hinge assembly comprises a hinge body 1, an upper hinge seat 2 and a lower hinge seat 3, wherein the hinge body 1 comprises at least two guide grooves 12, each of which is long strip-shaped and extends along the height direction of the hinge body 1, and each of which is open to the left or right side, the upper hinge seat 2 comprises at least one first extension arm 21, which is provided with a first hinge pin 211 arranged perpendicularly to the first extension arm 21, and each of the first hinge pins 211 is slidably and rotatably arranged in a part of the guide grooves 12, and the lower hinge seat 3 comprises at least one second extension arm 31, which is provided with a second hinge pin 311 arranged perpendicularly to the second extension arm 31, and each of the second hinge pins 311 is slidably and rotatably arranged in another guide groove 12.

[0070] As shown in Figs. 1-3, the hinge assembly comprises a hinge body 1, an upper hinge seat 2 and a lower hinge seat 3, wherein the hinge body 1 comprises at least two guide grooves 12, each of which is long strip-shaped and extends along the height direction of the hinge body 1, and each of which is open to the left or right side, the upper hinge seat 2 comprises at least one first extension arm 21, which is provided with a first hinge pin 211 arranged perpendicularly to the first extension arm 21, and each of the first hinge pins 211 is slidably and rotatably arranged in a part of the guide grooves 12, and the lower hinge seat 3 comprises at least one second extension arm 31, which is provided with a second hinge pin 311 arranged perpendicularly to the second extension arm 31, and each of the second hinge pins 311 is slidably and rotatably arranged in another guide groove 12. Figures 1 to 8 As shown in Figs. 1-3, the hinge assembly comprises a hinge body 1, an upper hinge seat 2 and a lower hinge seat 3, wherein the hinge body 1 comprises at least two guide grooves 12, each of which is long strip-shaped and extends along the height direction of the hinge body 1, and each of which is open to the left or right side, the upper hinge seat 2 comprises at least one first extension arm 21, which is provided with a first hinge pin 211 arranged perpendicularly to the first extension arm 21, and each of the first hinge pins 211 is slidably and rotatably arranged in a part of the guide grooves 12, and the lower hinge seat 3 comprises at least one second extension arm 31, which is provided with a second hinge pin 311 arranged perpendicularly to the second extension arm 31, and each of the second hinge pins 311 is slidably and rotatably arranged in another guide groove 12.Figure 14 As shown, the displaceable distance of each hinge seat relative to the hinge body 1 is d, and thus the liftable height of the whole assembly is 2*d, thereby realizing large lift with small volume.

[0071] Specifically, as shown in Figure 10 , 14 and 15, at least one groove 11 is formed on the hinge body 1 along the height direction of the hinge body 1, and the upper end 112 and / or the lower end of the groove 11 is an open end, as shown in Figure 10 The left and right side walls of the hinge body 1, and at least two of the left and right groove walls 111 for defining the groove 11, are provided with the above-mentioned guide grooves 12, for example, the guide grooves 12 can be formed on the two side walls of the hinge body 1, or on the two groove walls 111 in the groove 11, or at least one on the side wall of the hinge body 1 and at least one in the groove 11, which can be randomly formed according to actual needs, as long as it does not deviate from the scope of the present application. Each first extension arm 21 can be randomly combined and located in part of the guide grooves 12, and each second extension arm 31 can also be randomly combined and located in other part of the guide grooves 12, as long as the upper hinge seat 2 and the lower hinge seat 3 can slide up and down and rotate relative to the hinge body 1.

[0072] In order to prevent the hinge body 1 from interfering with the movement of the upper hinge seat 2 and the lower hinge seat 3, when the first extension arm 21 in the upper hinge seat 2 is located in the groove 11, that is, the first hinge pin 211 is located in the guide groove 12 in the groove 11, the upper end 112 of the groove 11 is an open end, so that the first extension arm 21 can slide up and down in the groove 11, and when the lower hinge seat 3 is located in the groove 11, that is, the second hinge pin 311 is located in the guide groove 12 in the groove 11, the lower end 113 of the groove 11 is an open end, so that the second extension arm 31 can also slide in the groove 11. As shown in Figure 10 In this embodiment, the upper end 112 of the groove 11 and the lower end 113 of the groove 11 are both open ends.

[0073] Specifically, as shown in Figure 11 , 14 and 15, the upper hinge seat 2 comprises: an upper hinge seat body 22, and the above-mentioned first extension arm 21 extending downward from the upper hinge seat body 22, the first extension arm 21 is a plurality of, each first extension arm 21 is arranged side by side on the upper hinge seat body 22 along the arrangement direction of each hinge arm. Each first extension arm 21 is arranged side by side on the upper hinge seat body 22, and the upper hinge seat body 22 is also a long strip-shaped thin plate extending in the left-right direction. As shown in Figure 12 , 14As shown in FIG. 15, the lower hinge seat 3 comprises a lower hinge seat body 32 and a plurality of second extending arms 31 extending upward from the lower hinge seat body 32, each of the second extending arms 31 is arranged side by side on the lower hinge seat body 32, and the lower hinge seat body 32 is also a long strip-shaped plate extending in the left-right direction. At least four of the left and right side walls of the hinge body 1 and the left and right side walls 111 of each of the grooves 11 defining the groove 11 are provided with the guide grooves 12, part of the guide grooves 12 are respectively slidably and rotatably connected with each of the first hinge pins 211, and the other part of the guide grooves 12 are respectively slidably and rotatably connected with each of the second hinge pins 311. According to actual needs, the assembly relationship between the first hinge pin 211, the second hinge pin 311 and the guide groove 12 can be adjusted at will.

[0074] In order to facilitate movement, preferably, as shown in FIG. 1, Figures 11 to 15 As shown in FIG. 1, the above-mentioned groove 11 is a plurality of grooves, the groove 11 of the hinge body 1 is arranged in front of the hinge body 1, and the back is a connecting plate 15. At least one of the left and right side walls 111 of each of the grooves 11 defining the groove 11 is provided with the above-mentioned guide groove 12, part of the two first hinge pins 211 in the two adjacent first extending arms 21 are respectively located in the two guide grooves 12 in the same groove 11, and / or part of the two second hinge pins 311 in the two adjacent second extending arms 31 are respectively located in the two guide grooves 12 in the same groove 11. In this way, when the upper hinge seat 2 and the lower hinge seat 3 move relative to the hinge body 1, the upper hinge seat 2 and the lower hinge seat 3 are arranged separately in different grooves 11, so that the upper hinge seat 2 and the lower hinge seat 3 do not interfere with each other. More preferably, the adjacent two first extending arms 21 and the adjacent two second extending arms 31 are arranged alternately in each of the grooves 11. That is, two adjacent first extending arms 21 are arranged in one groove 11, and two adjacent second extending arms 31 are arranged in the groove 11 beside the groove 11. The alternating arrangement can make the connection of the entire hinge assembly more stable.

[0075] As shown in FIG. 1, Figures 11 to 15As shown, in the present embodiment, the recesses 11 are two, the left and right side walls of the hinge body 1, and the left and right side walls 111 of each of the recesses 11 are provided with the guide slots 12. In addition, the first extension arms 21 and the second extension arms 31 are each three, two of the first extension arms 21 are located in the two guide slots 12 in the same recess 11, and the other first extension arm 21 is spaced apart from the two first extension arms 21. The first hinge pin 211 on the first extension arm 21 is located in one of the two guide slots 12 on the left and right side walls of the hinge body 1. In addition, as shown in the drawings, Figure 11 As shown, the upper hinge seat body 22 has a portion extending downward to form a first upper connecting arm 221, and the two first extension arms 21 are spaced apart from each other and fixedly connected to the first upper connecting arm 221. In addition, the upper hinge seat body 22 has another portion extending downward to form a second upper connecting arm 222, and the first extension arm 21 spaced apart from the two first extension arms 21 is arranged on the second upper connecting arm 222. In order to avoid interference between the first extension arm 21 and the small door 4 or the side door, a first blocking arm 222 is arranged on the outer side of the first extension arm 21, and the first blocking arm 222 is fixedly connected to the second upper connecting arm 222 and parallel to the first extension arm 21.

[0076] In addition, the two second extension arms 31 are located in the other recess 11, and the other second extension arm 31 is spaced apart from the two second extension arms 31. The second hinge pin 311 on the second extension arm 31 is located in the other one of the two guide slots 12 on the left and right side walls of the hinge body 1. In addition, the two second extension arms 31 are operatively located between the two first extension arms 21 and the other first extension arm 21, that is, when the hinge assembly is in the folded state, the two second extension arms 31 are located between the two first extension arms 21 and the other first extension arm 21. Such a structure results in a more compact hinge assembly. In addition, as shown in the drawings, Figure 12As shown, the lower hinge seat body 32 has a part extending upward to form a second upper connecting arm, and the two second extending arms 31 arranged adjacently are fixedly connected to the second lower connecting arm 321, and the lower hinge seat body 32 has another part extending upward to form a second lower connecting arm 321321, and the other second extending arm 31 arranged adjacently to the two second extending arms 31 is arranged on the second lower connecting arm 321, and in order to avoid the interference between the second extending arm 31 and the small door 4 or the side door, a second blocking arm 322322 is arranged on the outer side of the second extending arm 31, and the second blocking arm 322 is fixedly connected to the second lower connecting arm 321 and parallel to the second extending arm 31 and spaced apart from the second extending arm 31.

[0077] In addition, in other embodiments, the assembly relationship between the hinge body 1 and the upper hinge seat 2 and the lower hinge seat 3 can also have other structures, for example, the hinge body 1 is not provided with the groove 11, but a guide groove 12 is arranged on the left and right sides of the hinge body 1, the upper hinge seat 2 includes a first extending arm 21, and the lower hinge seat 3 includes a second extending arm 31, and the first hinge pin 211 on the first extending arm 21 is located in one guide groove 12, and the second extending arm 31 is located in the other guide groove 12. Of course, in another embodiment, the hinge body 1 can be provided with only one groove 11, and the left and right side walls 111 of the groove 11 are provided with guide grooves 12, and the left and right side walls of the hinge body 1 are also provided with guide grooves 12, and the upper hinge seat 2 includes two first extending arms 21, the two first extending arms 21 are arranged close to each other and located in the two guide grooves 12 in the groove 11, and the lower hinge seat 3 includes two second extending arms 31, the two second extending arms 31 are arranged spaced apart from each other and located in the two guide grooves 12 on the left and right sides of the hinge body 1. In addition, as shown in the drawings, Figure 19 As shown, in some embodiments, the first extending arm 21 and the second extending arm 31 are not elastic arms, and part of the two adjacent first extending arms 21 or part of the two adjacent second extending arms 31 are not spaced apart from each other, but are combined together, and some first extending arms and second extending arms can be arranged separately and not combined with other first extending arms or second extending arms. For example, as shown in the drawings, Figure 19 As shown, the left first extending arm 21 is arranged separately, and the right two first extending arms 21 are combined together.

[0078] Of course, in addition to the above-mentioned various modifications, other modifications can also be made according to actual needs, as long as they do not deviate from the scope of the present application.

[0079] In addition, the proximal end and the distal end of the guide slot 12 will be mentioned below, when the guide slot 12 is slidably provided with the first hinge pin 211, the proximal end of the guide slot 12 is the end close to the upper hinge seat 2, and the distal end of the guide slot 12 is the end away from the guide slot 12, when the guide slot 12 is slidably provided with the second hinge pin 311, the proximal end of the guide slot 12 is the end close to the lower hinge seat 3, and the distal end of the guide slot 12 is the end away from the guide slot 12.

[0080] As shown in Figure 10 , 14 and 15, the guide slot 12 slidably provided with the first hinge pin 211 is provided with a first limiting part at the proximal end of the guide slot 12 relative to the upper hinge seat 2, and the first limiting part is arranged to be engaged or disengaged with the first hinge pin 211 when the first hinge pin 211 slides to the proximal end of the guide slot 12 relative to the upper hinge seat 2. At the same time, the guide slot 12 slidably provided with the second hinge pin 311 is also provided with a second limiting part at the proximal end of the guide slot 12 relative to the lower hinge seat 3, and the second limiting part is arranged to be operatively engaged or disengaged with the second hinge pin 311 when the second hinge pin 311 slides to the proximal end of the guide slot 12 relative to the lower hinge seat 3.

[0081] As shown in Figure 11 and 12 , the first extension arm 21 and the second extension arm 31 are both elastic arms, and adjacent two first extension arms 21 are spaced apart from each other, and adjacent two second extension arms 31 are also spaced apart from each other, as shown in Figure 11 , 14 and 15, the first limiting part and the second limiting part are both limiting strips 13 arranged in the guide slot 12, and the limiting strip 13 and the proximal end of the guide slot 12 relative to the upper hinge seat 2 or the lower hinge seat 3 enclose an engagement area 14 for engaging the first hinge pin 211 or the second hinge pin 311, that is, the limiting strip 13 and the proximal end of the guide slot 12 slidably provided with the first hinge pin 211 enclose an engagement area 14 for engaging the first hinge pin 211, and the limiting strip 13 and the proximal end of the guide slot 12 slidably provided with the second hinge pin 311 enclose an engagement area 14 for engaging the second hinge pin 311.

[0082] When the upper hinge seat 2 slides to the proximal end of the guide slot 12 relative to the hinge body 1 in a direction away from the hinge body 1, the elastic force of the first extension arm 21 will make the first hinge pin 211 cross the limiting strip 13 and enter the clamping area 14, so that the first hinge pin 211 is fixed at the proximal end of the guide slot 12, and the hinge assembly is kept in the open state. When the first hinge pin 211 is in the clamping area 14, it can rotate around the axis of the first hinge pin 211. Similarly, when the lower hinge seat 3 slides to the proximal end of the guide slot 12 relative to the hinge body 1 in a direction away from the hinge body 1, the elastic force of the second extension arm 31 will make the second hinge pin 311 cross the limiting strip 13 and enter the clamping area 14, so that the second hinge pin 311 is fixed at the proximal end of the guide slot 12, and the hinge assembly is kept in the open state. When the second hinge pin 311 is in the clamping area 14, it can also rotate around the axis of the second hinge pin 311.

[0083] As shown in Figure 11 and 12 In this embodiment, the first hinge pin 211 and the second hinge pin 311 are a cylindrical body, and the axis direction of the cylindrical body is perpendicular to the first extension arm 21 or the second extension arm 31. Of course, in other embodiments, the first hinge pin 211 and the second hinge pin 311 can also be other structures, such as a square, as long as they do not deviate from the scope of the present application.

[0084] In some embodiments, when the first hinge pin 211 and the second hinge pin 311 are made of iron, the first limiting part and the second limiting part are magnets arranged at the proximal end of the guide slot 12. When the first hinge pin 211 and the second hinge pin 311 are not made of iron, an iron adsorption point can be arranged at the axis position of the first hinge pin 211 and the second hinge pin 311, or it can be a magnet directly. When the first hinge pin 211 and the second hinge pin 311 are located at the proximal end of the guide slot 12, the magnet is located at the axis position of the first hinge pin 211 and the second hinge pin 311, so that the interference of the magnet on the rotation of the first hinge pin 211 and the second hinge pin 311 is reduced.

[0085] As shown in Figure 10 The guide slot 12 is a one-way slot, and the guide slot 12 slidably arranged with the first hinge pin 211 is open to the side away from the upper hinge seat 2, and the guide slot 12 slidably arranged with the second hinge pin 311 is open to the side away from the lower hinge seat 3. In this way, the first extension arm 21 and the second extension arm 31 can be conveniently installed into the guide slot 12.

[0086] In addition, when the guide slot 12 is not open to one side, the elastic force of the first extension arm 21 and the second extension arm 31 is generally used to make the first hinge pin 211 and the second hinge pin 311 be clamped into the guide slot 12, so the length of the first hinge pin 211 and the second hinge pin 311 cannot be too long, and the elasticity of the first extension arm 21 and the second extension arm 31 must be large enough, otherwise the first hinge pin 211 and the second hinge pin 311 cannot be clamped into the guide slot 12. In the case, since one end of the guide slot 12 is open, the installation of the first extension arm 21 and the second extension arm 31 is not considered, so the depth of the guide slot 12 can be deep, the length of the first hinge pin 211 and the second hinge pin 311 can be long, and the elasticity of the first extension arm 21 and the second extension arm 31 can be small. When the length of the first hinge pin 211 and the second hinge pin 311 is long enough and the elasticity of the first extension arm 21 and the second extension arm 31 is small, the first hinge pin 211 and the second hinge pin 311 can be effectively prevented from being pulled out of the guide slot 12, thereby increasing the practicability of the hinge assembly.

[0087] As shown in Figure 13 and 15 When the first hinge pin 211 is at the proximal end of the guide slot 12, the distance H between the body of the upper hinge seat 2 and the hinge body 1 is greater than the thickness W of the first extension arm 21, and the body of the upper hinge seat 2 is the upper hinge seat body 22. In addition, when the second hinge pin 311 is at the proximal end of the guide slot 12 relative to the lower hinge seat 3, the distance between the body of the lower hinge seat 3 and the hinge body 1 is greater than the thickness of the second extension arm 31, and the body of the lower hinge seat 3 is the lower hinge seat body 32.

[0088] In addition, the structure of the first hinge pin 211 and the second hinge pin 311 and the guide slot 12 in each embodiment of the case is described as follows: when the guide slot 12 is open to the right side, the first hinge pin 211 or the second hinge pin 311 in the guide slot 12 extends to the left side from the first extension arm 21 or the second extension arm 31; when the guide slot 12 is open to the left side, the first hinge pin 211 or the second hinge pin 311 in the guide slot 12 extends to the right side from the first extension arm 21 or the second extension arm 31, so that the first hinge pin 211 and the second hinge pin 311 can be inserted into the guide slot 12. In addition, in some embodiments, the first hinge pin 211 and the second hinge pin 311 can be easily pulled out of the guide slot 12, such as Figure 16As shown, in order to avoid the first hinge pin 211 and the second hinge pin 311 from being pulled out of the guide slot 12, the first hinge pin 211 and the second hinge pin 311 each include: a connecting rod 2111, a connecting block 2112 fixedly connected with the connecting rod 2111 coaxially, and the upper portions of the two side slot walls 111 defining the guide slot 12 each extend towards each other to form two shielding portions 123, the connecting block 2112 is located in the two shielding portions 123, the connecting rod 2111 extends into the guide slot 12 from the first extension arm 21 and the second extension arm 31 and is fixedly connected with the connecting block 2112, in order to enable the connecting block 2112 to rotate in the guide slot 12, the radial dimension of the connecting block 2112 in any direction is less than the slot width of the guide slot 12.

[0089] Of course, in some embodiments, the first hinge pin 211 and the second hinge pin 311 are not easy to be pulled out of the guide slot 12, so that the guide wiper can be provided as a common slot, for example, the guide slot 12 in the first embodiment, and the first hinge pin 211 and the second hinge pin 311 are cylindrical pins.

[0090] The second embodiment of the present application provides a mounting method of a hinge assembly, which adopts the hinge assembly in the first embodiment, as shown in the following. Figure 15 As shown, the upper hinge seat 2 can be vertically arranged relative to the hinge body 1, then the first hinge pin 211 of the first extension arm 21 is inserted into the guide slot 12 from the open end of the guide slot 12, the upper hinge seat 2 is pulled to move the first hinge pin 211 to the proximal end of the guide slot 12, then the upper hinge seat 2 is rotated to arrange the first extension arm 21 parallel to the groove 11, at this time, the first extension arm 21 is slidably arranged in the groove 11. Then the second extension arm 31 is arranged vertically relative to the hinge body 1, the second extension arm 31 is inserted between the upper hinge seat body 22 and the hinge body 1, then the second hinge pin 311 of the second extension arm 31 is inserted into the guide slot 12 from the open end of the guide slot 12 which is open to the side away from the lower hinge seat 3, the second hinge pin 311 is moved to the proximal end of the guide slot 12, then the lower hinge seat 3 is rotated to arrange the second extension arm 31 parallel to the groove 11.

[0091] Of course, the lower hinge seat 3 can be assembled first, which can be arranged vertically relative to the hinge body 1, then the second hinge pin 311 on the second extending arm 31 is inserted into the guide groove 12 from the open end of the guide groove 12, the lower hinge seat 3 is pulled to move the second hinge pin 311 to the proximal end of the guide groove 12, then the lower hinge seat 3 is rotated to arrange the second extending arm 31 parallel to the groove 11. Then the first extending arm 21 is arranged vertically relative to the hinge body 1, the first extending arm 21 is inserted between the lower hinge seat body 32 and the hinge body 1, and then the first hinge pin 211 of the first extending arm 21 is inserted into the guide groove 12 from the open end of the guide groove 12 which is open to the side away from the upper hinge seat 2, the first hinge pin 211 is moved to the proximal end of the guide groove 12, and then the upper hinge seat 2 is rotated to arrange the first extending arm 21 parallel to the groove 11. The assembly of the hinge assembly can also be completed.

[0092] The third embodiment of the present application provides a container, as shown in the figure, which comprises a base and four side plates 5 connected to the base, and further comprises a hinge assembly, at least one of the four side plates 5 is provided with a small door 4 connected to the side plate 5 through the hinge assembly, and specifically, as shown in the figure, a first mounting groove 41 is formed on the small door 4, one of the upper hinge seat 2 or the lower hinge seat 3 is clamped in the first mounting groove 41, and the first extending arm 21 at least partially extends out of the first mounting groove 41 and is connected to the hinge body 1, and a second mounting groove is formed on the side plate 5, the other of the upper hinge seat 2 and the lower hinge seat 3 is clamped in the second mounting groove, and the second extending arm 31 at least partially extends out of the second mounting groove and is connected to the hinge body 1. Figures 1 to 8 Figure 15 More preferably, as shown in the figure, when the upper hinge seat 2 and the lower hinge seat 3 slide to the limit position in the direction of approaching each other, the hinge assembly is completely folded, the hinge body 1 is partially located in the first mounting groove 41 and the remaining part is located in the second mounting groove, and the part of the first extending arm 21 extending out of the first mounting groove 41 is located in the second mounting groove, and the part of the second extending arm 31 extending out of the first mounting groove 41 is located in the first mounting groove 41. As shown in the figure, when the upper hinge seat 2 and the lower hinge seat 3 slide to the preset position in the direction of moving away from each other, at this time the hinge assembly is opened, the hinge body 1 is separated from the first mounting groove 41 and the second mounting groove, the first extending arm 21 is separated from the second mounting groove, and the second extending arm 31 is separated from the first mounting groove 41.

[0093] More preferably, as shown in the figure, when the upper hinge seat 2 and the lower hinge seat 3 slide to the limit position in the direction of approaching each other, the hinge assembly is completely folded, the hinge body 1 is partially located in the first mounting groove 41 and the remaining part is located in the second mounting groove, and the part of the first extending arm 21 extending out of the first mounting groove 41 is located in the second mounting groove, and the part of the second extending arm 31 extending out of the first mounting groove 41 is located in the first mounting groove 41. As shown in the figure, when the upper hinge seat 2 and the lower hinge seat 3 slide to the preset position in the direction of moving away from each other, at this time the hinge assembly is opened, the hinge body 1 is separated from the first mounting groove 41 and the second mounting groove, the first extending arm 21 is separated from the second mounting groove, and the second extending arm 31 is separated from the first mounting groove 41. Figure 3 Figure 8 More preferably, as shown in the figure, when the upper hinge seat 2 and the lower hinge seat 3 slide to the limit position in the direction of approaching each other, the hinge assembly is completely folded, the hinge body 1 is partially located in the first mounting groove 41 and the remaining part is located in the second mounting groove, and the part of the first extending arm 21 extending out of the first mounting groove 41 is located in the second mounting groove, and the part of the second extending arm 31 extending out of the first mounting groove 41 is located in the first mounting groove 41. As shown in the figure, when the upper hinge seat 2 and the lower hinge seat 3 slide to the preset position in the direction of moving away from each other, at this time the hinge assembly is opened, the hinge body 1 is separated from the first mounting groove 41 and the second mounting groove, the first extending arm 21 is separated from the second mounting groove, and the second extending arm 31 is separated from the first mounting groove 41.

[0094] ​​When the hinge assembly is closed, that is, when the small door 4 is closed, part of the hinge body 1 is hidden in the first mounting groove 41 and part is hidden in the second mounting groove. Furthermore, part of the first extension arm 21 is located in the second mounting groove and part of the second extension arm 31 is located in the first mounting groove 41. Therefore, the hinge assembly can limit the relative displacement of the side plate 5 and the small door 4 in the front-back and lateral directions.

[0095] Furthermore, the hinge assembly is completely concealed within the small door 4 and side panel 5, preventing interference between the hinge assembly and other components, while also making the entire container neater and more aesthetically pleasing. In addition, due to the compact structure of the hinge assembly, the first mounting slot 41 and the second mounting slot do not need to be made too large, allowing the small door 4 and side panel 5 to be made thinner.

[0096] like Figure 18 As shown, the first mounting slot 41 includes: a first main body slot 411 and a first side slot 412 connected to the first main body slot 411. The first main body slot 411 and the first side slot 412 are arranged adjacent to each other in a direction perpendicular to the small door 4, and the first side slot 412 is positioned closer to the inside of the container. A portion of the upper hinge seat 2 or the lower hinge seat 3 is engaged in the first main body slot 411. Specifically, one of the upper hinge seat body 22 or the lower hinge seat body 32 is engaged in the first main body slot 411. The hinge body 1 is operably located in the first side slot 412.

[0097] The second mounting slot includes: a second main body slot and a second side slot communicating with the second main body slot. The second main body slot and the second side slot are arranged adjacent to each other in a direction perpendicular to the side plate 5, and the second side slot is set in a direction close to the inside of the container. Another part of the upper hinge seat 2 or the lower hinge seat 3 is engaged in the second main body slot, and another part of the hinge body 1 is operably located in the second side slot.

[0098] Specifically, when the hinge assembly is closed, part of the connecting plate 15 on the back of the hinge body 1 is located in the first side slot 412, and the remaining part is located in the second side slot.

[0099] In addition, mounting holes 6 are provided on the groove walls 111 that define the first main body groove 411 and the second main body groove, and locking pins 7 for engaging in the mounting holes 6 are provided on the upper hinge seat body 22 and the lower hinge seat body 32.

[0100] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0101] These and other changes can be made to the embodiments in light of the above Detailed Description. The terms used in the claims have their normal ordinary meaning in the technical field unless otherwise defined. Any patents or publications referred to in this specification are incorporated by reference in their entirety, except insofar as they conflict with the present specification (including defined terms located in a heading).

[0102] Those skilled in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present application, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A hinge assembly, characterized by The hinge assembly comprises: a hinge body, which comprises at least two guide grooves extending along the height direction of the hinge body, and each of the guide grooves is open to the left side or the right side; an upper hinge seat, which comprises at least one first extension arm provided with a first hinge pin extending from the first extension arm to the left side or the right side, and the at least one first hinge pin is slidably and rotatably arranged in at least one of the guide grooves, and the upper hinge seat can rotate relative to the hinge body around the axis of the first hinge pin; a lower hinge seat, which comprises at least one second extension arm provided with a second hinge pin extending from the second extension arm to the left side or the right side, and the at least one second hinge pin is slidably and rotatably arranged in at least another one of the guide grooves, and the lower hinge seat can rotate relative to the hinge body around the axis of the second hinge pin; the upper hinge seat and the lower hinge seat are slid to the limit position in the direction of approaching each other to fold the hinge assembly, and the upper hinge seat and the lower hinge seat are slid to the preset position in the direction of moving away from each other to unfold the hinge assembly.

2. The hinge assembly of claim 1, wherein, At least one groove is formed in the hinge body along the height direction of the hinge body, and the upper end and / or the lower end of the groove is open; wherein at least two of the left and right side walls of the hinge body and the left and right side walls defining the grooves at each of the grooves are provided with the guide grooves, and the upper end of the groove is open when the first hinge pin is located in the guide groove in the groove, and the lower end of the groove is open when the second hinge pin is located in the guide groove in the groove.

3. The hinge assembly according to claim 2, wherein: the upper hinge seat comprises an upper hinge seat body and a plurality of first extension arms extending downward from the upper hinge seat body, and each of the first extension arms is arranged side by side on the upper hinge seat body; the lower hinge seat comprises a lower hinge seat body and a plurality of second extension arms extending upward from the lower hinge seat body, and each of the second extension arms is arranged side by side on the lower hinge seat body; wherein at least four of the left and right side walls of the hinge body and the left and right side walls defining the grooves at each of the grooves are provided with the guide grooves, and part of the guide grooves are slidably and rotatably connected with each of the first hinge pins, and the other part of the guide grooves are slidably and rotatably connected with each of the second hinge pins.

4. The hinge assembly of claim 3, wherein, There are a plurality of grooves, and the left and right side walls defining the grooves at at least part of the grooves are provided with the guide grooves. Part of the two first hinge pins in the two adjacent first extension arms are respectively located in the two guide grooves in the same groove, and / or part of the two second hinge pins in the two adjacent second extension arms are respectively located in the two guide grooves in the same groove.

5. The hinge assembly of claim 4, wherein, The two adjacent first extension arms and the two adjacent second extension arms are alternately located in the grooves.

6. The hinge assembly of claim 5, wherein, The two grooves are the left and right side walls of the hinge body, and the guide grooves are formed in the left and right side walls of the groove. The first extension arm and the second extension arm are both three, two first hinge pins in the two adjacent first extension arms are respectively located in the two guide grooves in the same groove, and the other first extension arm is separated from the two adjacent first extension arms, and the first hinge pin on the first extension arm is located in one of the two guide grooves on the left and right side walls of the hinge body. Two second hinge pins in the two adjacent second extension arms are respectively located in the two guide grooves in the other groove, and the other second extension arm is separated from the two adjacent second extension arms, and the second hinge pin on the second extension arm is located in the other guide groove of the two guide grooves on the left and right side walls of the hinge body, and the two adjacent second extension arms are operatively located between the two adjacent first extension arms and the other first extension arm.

7. The hinge assembly of any one of claims 1 to 6, wherein, The guide groove slidably provided with the first hinge pin is provided with a first limiting portion relative to the proximal end of the upper hinge seat, and the first limiting portion is arranged to be operatively engaged or disengaged with the first hinge pin when the first hinge pin slides to the proximal end of the guide groove relative to the upper hinge seat. And / or, the guide groove slidably provided with the second hinge pin is provided with a second limiting portion relative to the proximal end of the lower hinge seat, and the second limiting portion is arranged to be operatively engaged or disengaged with the second hinge pin when the second hinge pin slides to the proximal end of the guide groove relative to the lower hinge seat.

8. The hinge assembly of claim 7, wherein, The first extension arm and the second extension arm are both elastic arms, and any two adjacent first extension arms are separated from each other, and any two adjacent second extension arms are separated from each other.

9. The hinge assembly of claim 8, wherein, The first limiting portion and the second limiting portion are both limiting strips arranged in the guide groove, and the limiting strip and the guide groove relative to the proximal end of the upper hinge seat or the lower hinge seat are enclosed to form an engagement area for engaging the first hinge pin or the second hinge pin.

10. The hinge assembly of any one of claims 2 to 6, wherein, The upper end and the lower end of the groove are both open ends, and the guide groove is a one-way groove, the upper end of the guide groove slidably provided with the first hinge pin is an open end; the lower end of the guide groove slidably provided with the second hinge pin is an open end.

11. The hinge assembly of claim 10, wherein, The thickness of the first extension arm is less than the distance between the upper hinge seat body of the upper hinge seat and the hinge body when the first hinge pin is located at the proximal end of the guide groove relative to the upper hinge seat. And / or, the thickness of the second extension arm is less than the distance between the lower hinge seat body of the lower hinge seat and the hinge body when the second hinge pin is at the proximal end of the guide slot relative to the lower hinge seat.

12. A method of installing a hinge assembly, characterized by, The hinge assembly of claim 11, comprising the steps of: inserting the first hinge pin on the first extension arm into the open end of the guide slot that is open toward the side away from the upper hinge seat, and pulling the upper hinge seat so that the first hinge pin slides along the guide slot to the proximal end of the guide slot relative to the upper hinge seat; inserting the second extension arm between the upper hinge seat body and the hinge body, and inserting the second hinge pin on the second extension arm into the open end of the guide slot that is open toward the side away from the lower hinge seat; or, inserting the second hinge pin on the second extension arm into the open end of the guide slot that is open toward the side away from the lower hinge seat, and pulling the lower hinge seat so that the second hinge pin slides along the guide slot to the proximal end of the guide slot relative to the lower hinge seat; inserting the first extension arm between the lower hinge seat body and the hinge body, and inserting the first hinge pin on the first extension arm into the open end of the guide slot that is open toward the side away from the upper hinge seat.

13. A container characterized in that, The container comprises four side panels, a base, and the hinge assembly of any one of claims 1 to 7, each of the side panels is connected to the base, and at least one of the side panels is provided with a small door; wherein a first mounting slot is formed on the small door, one of the upper hinge seat or the lower hinge seat is clamped in the first mounting slot, the first extension arm at least partially extends out of the first mounting slot, a second mounting slot is formed on the side panel, the other of the upper hinge seat and the lower hinge seat is clamped in the second mounting slot, and the second extension arm at least partially extends out of the second mounting slot.

14. The container of claim 13, wherein: folding the hinge assembly by sliding the upper hinge seat and the lower hinge seat in the direction of approaching each other to the limit position, the hinge body is arranged to be partially in the first mounting slot and partially in the second mounting slot, the part of the first extension arm extending out of the first mounting slot is in the second mounting slot, and the part of the second extension arm extending out of the first mounting slot is in the first mounting slot; sliding the upper hinge seat and the lower hinge seat in the direction of moving away from each other to the preset position, the hinge body is out of the first mounting slot and the second mounting slot, the first extension arm is out of the second mounting slot, and the second extension arm is out of the first mounting slot.

15. The container of claim 14, wherein, The first installation slot comprises a first main slot, a first side slot communicated with the first main slot, the first main slot and the first side slot are arranged adjacent along a direction perpendicular to the direction of the door, and the first side slot is arranged close to the direction inside the container, one part of the upper hinge seat or the lower hinge seat is clamped in the first main slot, and the hinge main part is operatively located in the first side slot. And / or, the second installation slot comprises a second main slot, a second side slot communicated with the second main slot, the second main slot and the second side slot are arranged adjacent along a direction perpendicular to the direction of the side plate, and the second side slot is arranged close to the direction inside the container, the other part of the upper hinge seat or the lower hinge seat is clamped in the second main slot, and the other part of the hinge main part is operatively located in the second side slot.

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