Aviation case

Abstract

The utility model provides an aviation case, and the case comprises a front cover which is provided with a first upper connection hole and a first lower connection hole; the rear cover is provided with a second upper connecting hole and a second lower connecting hole; the upper cover is provided with a first upper nut and a second upper nut; the lower cover is provided with a first lower nut and a second lower nut; a rod part of the first upper fastener penetrates through the first upper connecting hole and is in threaded connection with a central hole of the first upper nut; the rod part of the second upper fastener penetrates through the second upper connecting hole and is in threaded connection with the central hole of the second upper nut; a rod part of the first lower fastener penetrates through the first lower connecting hole and is in threaded connection with a central hole of the first lower nut; and the rod part of the second lower fastener penetrates through the second lower connecting hole and is in threaded connection with the central hole of the second lower nut. According to the aviation case, the upper cover and the front cover, the upper cover and the rear cover, the lower cover and the front cover, and the lower cover and the rear cover can be repeatedly disassembled and assembled, so that the service life of the aviation case is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of packing boxes, and particularly to an aviation box. Background Art

[0002] An aviation box is a new type of packaging product for transportation, which is developed to solve the problems that traditional simple wooden box packaging cannot effectively protect high-tech products during long-distance transportation and has poor mobility.

[0003] Currently, the detachable aviation boxes on the market include a front cover, a rear cover, a left cover, a right cover, an upper cover and a lower cover. Among them, the front cover, the rear cover, the left cover, the right cover, the upper cover and the lower cover enclose a containing cavity. The upper cover is connected to the front cover, the upper cover is connected to the rear cover, the lower cover is connected to the front cover, and the lower cover is connected to the rear cover by bolts. However, due to structural design reasons, the connections between the upper cover and the front cover, the upper cover and the rear cover, the lower cover and the front cover, and the lower cover and the rear cover are prone to failure, resulting in a short service life of the aviation box. Utility Model Content

[0004] The embodiments of this application provide an aviation box to solve the problems existing in the related technologies. The technical solutions are as follows:

[0005] The embodiments of this application provide an aviation box, including:

[0006] A front cover, which has a first upper connection hole and a first lower connection hole;

[0007] A rear cover, which has a second upper connection hole and a second lower connection hole;

[0008] An upper cover, with a first upper nut provided at the front end of the upper cover and a second upper nut provided at the rear end of the upper cover;

[0009] A lower cover, with a first lower nut provided at the front end of the lower cover and a second lower nut provided at the rear end of the lower cover;

[0010] A first upper fastener, the head of the first upper fastener abuts against the front cover, and the rod portion of the first upper fastener passes through the first upper connection hole and the central hole of the first upper nut and is screwed with the central hole of the first upper nut to connect the upper cover and the front cover together;

[0011] A second upper fastener, the head of the second upper fastener abuts against the front cover, and the rod portion of the second upper fastener passes through the second upper connection hole and the central hole of the second upper nut and is screwed with the central hole of the second upper nut to connect the upper cover and the rear cover together;

[0012] The first lower fastener, the head of the first lower fastener abuts against the front cover, and the rod portion of the first lower fastener passes through the first lower connection hole and the central hole of the first lower nut and is screwed with the central hole of the first lower nut to connect the lower cover and the front cover together; and

[0013] The second lower fastener, the head of the second lower fastener abuts against the rear cover, and the rod portion of the second lower fastener passes through the second lower connection hole and the central hole of the second lower nut and is screwed with the central hole of the second lower nut to connect the lower cover and the rear cover together;

[0014] Wherein, the first upper nut, the second upper nut, the first lower nut, the second lower nut, the first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener are all structures made of metal materials.

[0015] In an embodiment, a first upper support portion is provided at the upper end of the front cover, the first upper connection hole is provided on the first upper support portion, a first lower support portion is provided at the lower end of the front cover, and the first lower connection hole is provided on the first lower support portion;

[0016] A second upper support portion is provided at the upper end of the rear cover, the second upper connection hole is provided on the second upper support portion, a second lower support portion is provided at the lower end of the rear cover, and the second lower connection hole is provided on the second lower support portion;

[0017] A first upper connection portion is provided at the front end of the upper cover, the first upper nut is provided on the first upper connection portion, the first upper connection portion is arranged on the top surface of the first upper support portion, a second upper connection portion is provided at the rear end of the upper cover, the second upper nut is provided on the second upper connection portion, and the second upper connection portion is arranged on the top surface of the second upper support portion;

[0018] A first lower connection portion is provided at the front end of the lower cover, the first lower nut is provided on the first lower connection portion, the first lower connection portion is arranged on the bottom surface of the first lower support portion, a second lower connection portion is provided at the rear end of the lower cover, the second lower nut is provided on the second lower connection portion, and the second lower connection portion is arranged on the bottom surface of the second lower support portion.

[0019] In an embodiment, a front handle is provided on the front side wall of the front cover, and the first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener are all perpendicular to the front-rear direction of the flight case.

[0020] In an embodiment, a rear handle is provided on the rear side wall of the rear cover, and the first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener are all perpendicular to the front-rear direction of the flight case.

[0021] In one embodiment, the flight case further includes:

[0022] A left cover, the front end of the left cover is detachably connected to the left end of the front cover, and the rear end of the left cover is detachably connected to the left end of the rear cover;

[0023] A right cover, the front end of the right cover is detachably connected to the right end of the front cover, the rear end of the right cover is detachably connected to the right end of the rear cover, and an accommodation cavity is formed among the right cover, the left cover, the front cover, the rear cover, the upper cover and the lower cover.

[0024] In one embodiment, the front end of the left cover has a first front card slot, the left end of the front cover is provided with a first left buckle, the first left buckle is detachably buckled with the first front card slot, the rear end of the left cover has a first rear card slot, the left end of the rear cover is provided with a second left buckle, and the second left buckle and the first rear card slot are detachably buckled;

[0025] The front end of the right cover has a second front card slot, the right end of the front cover is provided with a first right buckle, the first right buckle is detachably buckled with the second front card slot, the rear end of the right cover has a second rear card slot, the right end of the rear cover is provided with a second right buckle, and the second right buckle is detachably buckled with the second rear card slot.

[0026] In one embodiment, the upper cover is provided with a first clamping portion, the lower cover is provided with a second clamping portion. When two flight cases are stacked vertically, the second clamping portion of the flight case located above cooperates with the first clamping portion of the flight case located below to limit the lateral displacement of two adjacent flight cases up and down.

[0027] In one embodiment, among the first clamping portion and the second clamping portion, one is a clamping groove and the other is a clamping protrusion, and the clamping protrusion is adapted to the clamping groove.

[0028] In one embodiment, the number of the first clamping portions is multiple, and the multiple first clamping portions are arranged in sequence around the vertical center line of the upper cover;

[0029] The number of the second clamping portions is multiple, and the multiple second clamping portions are arranged in sequence around the vertical center line of the lower cover, and the second clamping portion cooperates with the corresponding first clamping portion.

[0030] In one embodiment, the first upper nut, the second upper nut, the first lower nut, the second lower nut, the first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener are all located inside the flight case.

[0031] The advantages or beneficial effects in the above technical solutions at least include:

[0032] For the flight case of the present utility model, since the first upper nut and the second upper nut are embedded in the upper cover and the first lower nut and the second lower nut are embedded in the lower cover, it is possible to reliably connect the upper cover and the front cover together by means of the first upper fastener cooperating with the first upper connection hole and the first upper nut. At the same time, since both the first upper nut and the first upper fastener are made of metal, the central hole of the first upper nut and the thread structure on the first upper fastener are not likely to fail, so that the upper cover and the front cover can be disassembled and assembled repeatedly. Similarly, it is possible to reliably connect the upper cover and the rear cover together by means of the second upper fastener cooperating with the second upper connection hole and the second upper nut. At the same time, since both the second upper nut and the second upper fastener are made of metal, the central hole of the second upper nut and the thread structure on the second upper fastener are not likely to fail, enabling the upper cover and the rear cover to be disassembled and assembled repeatedly. Similarly, it is possible to reliably connect the lower cover and the front cover together by means of the first lower fastener cooperating with the first lower connection hole and the first lower nut. At the same time, since both the first lower nut and the first lower fastener are made of metal, the central hole of the first lower nut and the thread structures on both the first lower fastener are not likely to fail, so that the lower cover and the front cover can be disassembled and assembled repeatedly. Similarly, it is possible to reliably connect the lower cover and the rear cover together by means of the second lower fastener cooperating with the second lower connection hole and the second lower nut. At the same time, since both the second lower nut and the second lower fastener are made of metal, the central hole of the second lower nut and the thread structures on both the second lower fastener are not likely to fail, so that the lower cover and the front cover can be disassembled and assembled repeatedly, which can improve the service life of the flight case.

[0033] The above summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0035] Figure 1 It is a schematic perspective view of the present utility model in the first perspective;

[0036] Figure 2 It is a schematic perspective view of the present utility model in the second perspective;

[0037] Figure 3 This is an exploded view of the present utility model from the first perspective;

[0038] Figure 4 This is a three-dimensional structural schematic diagram of the front cover in the present utility model;

[0039] Figure 5 This is a three-dimensional structural schematic diagram of the rear cover in the present utility model;

[0040] Figure 6 This is a three-dimensional structural schematic diagram of the upper cover in the present utility model;

[0041] Figure 7 This is a three-dimensional structural schematic diagram of the lower cover in the present utility model.

[0042] Reference numerals

[0043] 1. Front cover; 11. First upper connection hole; 12. First lower connection hole; 13. First upper support portion; 14. First lower support portion; 15. Front handle; 16. First moving wheel; 2. Rear cover; 21. Second upper connection hole; 22. Second lower connection hole; 23. Second upper support portion; 24. Second lower support portion; 25. Rear handle; 26. Second moving wheel; 3. Upper cover; 31. First upper connection portion; 311. First upper mounting hole; 32. Second upper connection portion; 321. Second upper mounting hole; 33. First clamping portion; 4. Lower cover; 41. First lower connection portion; 411. First lower mounting hole; 42. Second lower connection portion; 421. Second lower mounting hole; 43. Second clamping portion; 5. Left cover; 51. First front card slot; 52. First rear card slot; 6. Right cover; 61. Second front card slot; 62. Second rear card slot; 7. First left buckle; 8. Second left buckle; 9. First right buckle; 10. Second right buckle. Detailed implementation manners

[0044] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0045] See Figures 1-7 , which shows an aviation case in a preferred embodiment of the present utility model, including:

[0046] A front cover 1, the front cover 1 having a first upper connection hole 11 and a first lower connection hole 12;

[0047] A rear cover 2, the rear cover 2 having a second upper connection hole 21 and a second lower connection hole 22;

[0048] The upper cover 3 is provided with a first upper nut (not shown in the figure) at the front end and a second upper nut (not shown in the figure) at the rear end;

[0049] The lower cover 4 is provided with a first lower nut (not shown in the figure) at the front end and a second lower nut (not shown in the figure) at the rear end;

[0050] The first upper fastener (not shown in the figure), the head of the first upper fastener abuts against the front cover 1, and the rod portion of the first upper fastener passes through the first upper connection hole 11, the central hole of the first upper nut and is screwed with the central hole of the first upper nut to connect the upper cover 3 and the front cover 1 together;

[0051] The second upper fastener (not shown in the figure), the head of the second upper fastener abuts against the front cover 1, and the rod portion of the second upper fastener passes through the second upper connection hole 21, the central hole of the second upper nut and is screwed with the central hole of the second upper nut to connect the upper cover 3 and the rear cover 2 together;

[0052] The first lower fastener (not shown in the figure), the head of the first lower fastener abuts against the front cover 1, and the rod portion of the first lower fastener passes through the first lower connection hole 12, the central hole of the first lower nut and is screwed with the central hole of the first lower nut to connect the lower cover 4 and the front cover 1 together; and

[0053] The second lower fastener (not shown in the figure), the head of the second lower fastener abuts against the rear cover 2, and the rod portion of the second lower fastener passes through the second lower connection hole 22, the central hole of the second lower nut and is screwed with the central hole of the second lower nut to connect the lower cover 4 and the rear cover 2 together;

[0054] Wherein, the first upper nut, the second upper nut, the first lower nut, the second lower nut, the first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener are all structures made of metal materials.

[0055] For the flight case of the present utility model, since the first upper nut and the second upper nut are embedded in the upper cover 3 and the first lower nut and the second lower nut are embedded in the lower cover 4, the upper cover 3 and the front cover 1 can be reliably connected together by the cooperation of the first upper fastener with the first upper connection hole 11 and the first upper nut. At the same time, since both the first upper nut and the first upper fastener are made of metal, the central hole of the first upper nut and the thread structure on the first upper fastener are not likely to fail, so that the upper cover 3 and the front cover 1 can be disassembled and assembled repeatedly. Similarly, the upper cover 3 and the rear cover 2 can be reliably connected together by the cooperation of the second upper fastener with the second upper connection hole 21 and the second upper nut. At the same time, since both the second upper nut and the second upper fastener are made of metal, the central hole of the second upper nut and the thread structure on the second upper fastener are not likely to fail, so that the upper cover 3 and the rear cover 2 can be disassembled and assembled repeatedly. Similarly, the lower cover 4 and the front cover 1 can be reliably connected together by the cooperation of the first lower fastener with the first lower connection hole 12 and the first lower nut. At the same time, since both the first lower nut and the first lower fastener are made of metal, the central hole of the first lower nut and the thread structures on both the first lower fastener are not likely to fail, so that the lower cover 4 and the front cover 1 can be disassembled and assembled repeatedly. Similarly, the lower cover 4 and the rear cover 2 can be reliably connected together by the cooperation of the second lower fastener with the second lower connection hole 22 and the second lower nut. At the same time, since both the second lower nut and the second lower fastener are made of metal, the central hole of the second lower nut and the thread structures on both the second lower fastener are not likely to fail, so that the lower cover 4 and the front cover 1 can be disassembled and assembled repeatedly, which can improve the service life of the flight case.

[0056] See Figure 4 , in an embodiment, the upper end of the front cover 1 is provided with a first upper support portion 13, the first upper connection hole 11 is arranged on the first upper support portion 13, the lower end of the front cover 1 is provided with a first lower support portion 14, and the first lower connection hole 12 is arranged on the first lower support portion 14;

[0057] See Figure 5 , the upper end of the rear cover 2 is provided with a second upper support portion 23, the second upper connection hole 21 is arranged on the second upper support portion 23, the lower end of the rear cover 2 is provided with a second lower support portion 24, and the second lower connection hole 22 is arranged on the second lower support portion 24;

[0058] See Figure 6, the front end of the upper cover 3 is provided with a first upper connecting portion 31. The first upper connecting portion 31 has a first upper mounting hole 311 which houses a first upper nut. The first upper connecting portion 31 is placed on the top surface of the first upper supporting portion 13 to support the front end of the upper cover 3, which can further improve the connection reliability between the upper cover 3 and the front cover 1. The rear end of the upper cover 3 is provided with a second upper connecting portion 32. The second upper connecting portion 32 has a second upper mounting hole 321 which houses a second upper nut. The second upper connecting portion 32 is placed on the top surface of the second upper supporting portion 23 to support the rear end of the upper cover 3, which can further improve the connection reliability between the upper cover 3 and the rear cover 2;

[0059] See Figure 7 , the front end of the lower cover 4 is provided with a first lower connecting portion 41. The first lower connecting portion 41 has a first lower mounting hole 411 which houses a first lower nut. The first lower connecting portion 41 is placed on the bottom surface of the first lower supporting portion 14 to support the front end of the lower cover 4, which can further improve the connection reliability between the lower cover 4 and the front cover 1. The rear end of the lower cover 4 is provided with a second lower connecting portion 42. The second lower connecting portion 42 has a second lower mounting hole 421 which houses a second lower nut. The second lower connecting portion 42 is placed on the bottom surface of the second lower supporting portion 24 to support the rear end of the lower cover 4, which can further improve the connection stability between the lower cover 4 and the rear cover 2.

[0060] See Figure 1 and Figure 3 , in an embodiment, the front side wall of the front cover 1 is provided with a front handle 15. The first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener are all perpendicular to the front-back direction of the flight case. Thus, when lifting the flight case by pulling the front handle 15, the gravity of the flight case and the objects inside the flight case can be dispersed among the first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener. Since the first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener are all made of metal and are not easily deformed or damaged, compared with the prior art in which the gravity of the flight case and the objects inside the flight case is evenly distributed on the flight case, the respective covers of this flight case are less likely to be deformed or cracked, and thus the service life of the flight case can be further improved.

[0061] See Figure 2, in one embodiment, a rear handle 25 is provided on the rear side wall of the rear cover 2, and the first upper fastener, the second upper fastener, the first lower fastener, and the second lower fastener are all perpendicular to the front-rear direction of the flight case. Thus, when the flight case is lifted by hand through the rear handle 25, the gravity of the flight case and the objects inside the flight case can be dispersed among the first upper fastener, the second upper fastener, the first lower fastener, and the second lower fastener. Since the first upper fastener, the second upper fastener, the first lower fastener, and the second lower fastener are all structures made of metal materials and are not easily deformed or damaged, compared with the prior art where the gravity of the flight case and the objects inside the flight case is evenly distributed on the flight case, the respective covers of this flight case are less likely to be deformed or cracked, and thus the service life of the flight case can be further improved.

[0062] See Figure 1 , in one embodiment, the flight case further includes:

[0063] A left cover 5, the front end of the left cover 5 is detachably connected to the left end of the front cover 1, and the rear end of the left cover 5 is detachably connected to the left end of the rear cover 2, so that the left cover 5 can be disassembled and assembled;

[0064] A right cover 6, the front end of the right cover 6 is detachably connected to the right end of the front cover 1, and the rear end of the right cover 6 is detachably connected to the right end of the rear cover 2, and an accommodation cavity is formed among the right cover 6, the left cover 5, the front cover 1, the rear cover 2, the upper cover 3, and the lower cover 4, so that the right cover 6 can be disassembled and assembled.

[0065] See Figures 1-2 , in one embodiment, the front end of the left cover 5 has a first front card slot 51, a first left buckle 7 is provided at the left end of the front cover 1, and the first left buckle 7 is detachably buckled with the first front card slot 51. The rear end of the left cover 5 has a first rear card slot 52, a second left buckle 8 is provided at the left end of the rear cover 2, and the second left buckle 8 and the first rear card slot 52 are detachably buckled, so as to facilitate the quick installation of the left cover 5 and the rear cover 2 together. At the same time, the left cover 5 can be quickly detached from the rear cover 2, and the disassembly and assembly are more convenient and the disassembly and assembly efficiency is higher;

[0066] The front end of the right cover 6 has a second front card slot 61, a first right buckle 9 is provided at the right end of the front cover 1, and the first right buckle 9 is detachably buckled with the second front card slot 61. The rear end of the right cover 6 has a second rear card slot 62, a second right buckle 10 is provided at the right end of the rear cover 2, and the second right buckle 10 is detachably buckled with the second rear card slot 62, so as to facilitate the quick installation of the right cover 6 and the rear cover 2 together. At the same time, the right cover 6 can be quickly detached from the rear cover 2, and the disassembly and assembly are more convenient and the disassembly and assembly efficiency is higher.

[0067] See Figures 1-2In one embodiment, the upper cover 3 is provided with a first clamping portion 33, and the lower cover 4 is provided with a second clamping portion 43. When two aviation boxes are stacked up and down, the second clamping portion 43 of the aviation box located on the upper side cooperates with the first clamping portion 33 of the aviation box located on the lower side to limit the lateral displacement of the two adjacent aviation boxes above and below, thereby playing a role of stacking limit and improving the stacking stability.

[0068] See also Figures 1-2 In one embodiment, one of the first clamping portion 33 and the second clamping portion 43 is a clamping groove and the other is a clamping protrusion, and the clamping protrusion is adapted to the clamping groove. In this way, by inserting the clamping protrusion into the corresponding clamping groove, two adjacent aviation boxes can be reliably stacked together. The structure is simple and practical, the reliability is high, and the stacking operation is convenient.

[0069] Of course, in other embodiments, both the first clamping portion 33 and the second clamping portion 43 may be protruding structures, and the two protruding structures may abut against each other to also play a role of lateral limiting.

[0070] In one embodiment, there are multiple first clamping portions 33, and the multiple first clamping portions 33 are arranged in sequence around the vertical center line of the upper cover 3;

[0071] There are multiple second clamping parts 43, which are arranged in sequence around the vertical center line of the lower cover 4. The second clamping parts 43 cooperate with the corresponding first clamping parts 33 to further improve the stacking stability of two adjacent aviation boxes.

[0072] In one embodiment, the first upper nut, the second upper nut, the first lower nut, the second lower nut, the first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener are all located in the aviation box to hide the first upper nut, the second upper nut, the first lower nut, the second lower nut, the first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener, so that the appearance of the aviation box is simpler. When the aviation box is closed, the connection between the first upper fastener and the first upper nut, the second upper fastener and the second upper nut, the first lower fastener and the first lower nut, and the second lower fastener and the second lower nut cannot be released, so the use is safer.

[0073] In one embodiment, the first upper fastener, the second upper fastener, the first lower fastener, and the second lower fastener are all bolts.

[0074] See also Figure 1 In one embodiment, the front side wall of the front cover 1 can also be movably provided with a first movable wheel 16, and the first movable wheel 16 is used to movably cooperate with the ground to improve the mobility of the aviation box.

[0075] See Figure 1 , in one embodiment, a second moving wheel 26 may also be movably provided on the rear side wall of the rear cover 2. The second moving wheel 26 is used for movably cooperating with the ground to improve the moving convenience of the flight case.

[0076] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0077] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0078] The above is only the specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed in the present application, and these should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. Flight case, characterized in that, Including: A front cover having a first upper connection hole and a first lower connection hole; A rear cover having a second upper connection hole and a second lower connection hole; An upper cover with a first upper nut provided at the front end thereof and a second upper nut provided at the rear end thereof; A lower cover with a first lower nut provided at the front end thereof and a second lower nut provided at the rear end thereof; A first upper fastener, the head of which abuts against the front cover, and the rod portion of which passes through the first upper connection hole, the central hole of the first upper nut and is screwed with the central hole of the first upper nut to connect the upper cover and the front cover together; A second upper fastener, the head of which abuts against the front cover, and the rod portion of which passes through the second upper connection hole, the central hole of the second upper nut and is screwed with the central hole of the second upper nut to connect the upper cover and the rear cover together; A first lower fastener, the head of which abuts against the front cover, and the rod portion of which passes through the first lower connection hole, the central hole of the first lower nut and is screwed with the central hole of the first lower nut to connect the lower cover and the front cover together; And A second lower fastener, the head of which abuts against the rear cover, and the rod portion of which passes through the second lower connection hole, the central hole of the second lower nut and is screwed with the central hole of the second lower nut to connect the lower cover and the rear cover together; Wherein, the first upper nut, the second upper nut, the first lower nut, the second lower nut, the first upper fastener, the second upper fastener, the first lower fastener and the second lower fastener are all structures made of metal materials.

2. The flight case according to claim 1, wherein, A first upper support portion is provided at the upper end of the front cover, the first upper connection hole is provided on the first upper support portion, a first lower support portion is provided at the lower end of the front cover, and the first lower connection hole is provided on the first lower support portion; A second upper support portion is provided at the upper end of the rear cover, the second upper connection hole is provided on the second upper support portion, a second lower support portion is provided at the lower end of the rear cover, and the second lower connection hole is provided on the second lower support portion; A first upper connection portion is provided at the front end of the upper cover, the first upper nut is provided on the first upper connection portion, the first upper connection portion is arranged on the top surface of the first upper support portion, a second upper connection portion is provided at the rear end of the upper cover, the second upper nut is provided on the second upper connection portion, and the second upper connection portion is arranged on the top surface of the second upper support portion; A first lower connection portion is provided at the front end of the lower cover, the first lower nut is provided on the first lower connection portion, the first lower connection portion is arranged on the bottom surface of the first lower support portion, a second lower connection portion is provided at the rear end of the lower cover, the second lower nut is provided on the second lower connection portion, and the second lower connection portion is arranged on the bottom surface of the second lower support portion.

3. The flight case according to claim 1, characterized in that, The front side wall of the front cover is provided with a front handle, and the first upper fastener, the second upper fastener, the first lower fastener, and the second lower fastener are all perpendicular to the front-back direction of the flight case.

4. The flight case according to claim 1, wherein The rear side wall of the rear cover is provided with a rear handle, and the first upper fastener, the second upper fastener, the first lower fastener, and the second lower fastener are all perpendicular to the front-back direction of the flight case.

5. The flight case according to claim 1, characterized in that, The flight case further includes: A left cover, the front end of the left cover is detachably connected to the left end of the front cover, and the rear end of the left cover is detachably connected to the left end of the rear cover; A right cover, the front end of the right cover is detachably connected to the right end of the front cover, and the rear end of the right cover is detachably connected to the right end of the rear cover, and an accommodation cavity is formed among the right cover, the left cover, the front cover, the rear cover, the upper cover, and the lower cover.

6. The flight case according to claim 5, characterized in that, The front end of the left cover has a first front card slot, the left end of the front cover is provided with a first left buckle, and the first left buckle is detachably buckled with the first front card slot. The rear end of the left cover has a first rear card slot, the left end of the rear cover is provided with a second left buckle, and the second left buckle and the first rear card slot are detachably buckled; The front end of the right cover has a second front card slot, the right end of the front cover is provided with a first right buckle, and the first right buckle is detachably buckled with the second front card slot. The rear end of the right cover has a second rear card slot, the right end of the rear cover is provided with a second right buckle, and the second right buckle is detachably buckled with the second rear card slot.

7. The flight case according to claim 1, characterized in that, The upper cover is provided with a first clamping portion, and the lower cover is provided with a second clamping portion. When two flight cases are stacked vertically, the second clamping portion of the upper flight case cooperates with the first clamping portion of the lower flight case to limit the lateral displacement of two adjacent flight cases up and down.

8. The flight case according to claim 7, characterized in that, Among the first clamping portion and the second clamping portion, one is a clamping groove and the other is a clamping protrusion, and the clamping protrusion is adapted to the clamping groove.

9. The flight case according to claim 7, wherein The number of the first clamping portions is multiple, and the multiple first clamping portions are arranged in sequence around the vertical center line of the upper cover; The number of the second clamping portions is multiple, and the multiple second clamping portions are arranged in sequence around the vertical center line of the lower cover, and the second clamping portion cooperates with the corresponding first clamping portion.

10. The flight case according to claim 1, characterized in that, The first upper nut, the second upper nut, the first lower nut, the second lower nut, the first upper fastener, the second upper fastener, the first lower fastener, and the second lower fastener are all located inside the flight case.

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