A logistics distribution box

Abstract

The present invention discloses a logistics distribution box, specifically relating to the technical field of logistics distribution boxes, which includes an upper box body and a lower box body distributed up and down. The lower box body and the upper box body are movably connected by hinges. An air suction limiting component is arranged inside the lower box body, and an inflatable limiting component for fixing the air suction limiting component inside the lower box body and the upper box body is arranged outside the air suction limiting component; the air suction limiting component includes an airtight film fixed at the bottom of the lower box body, a fixing ring is fixed at the top of the airtight film, and a sealing cover for sealing the opening at the top of the fixing ring is arranged at the top of the fixing ring. In the present invention, first, the inside of the airtight film is evacuated to make multiple elastic balls squeeze and fix on the outer surface of the goods, and the elastic balls are used to fill the depressions on the outer surface of the goods to achieve comprehensive limiting of the goods and improve the fixing effect. Then, the inflated annular airbag and arc-shaped airbag are used to tightly clamp the airtight film inside the lower box body and the upper box body to further fix the goods.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics distribution boxes, and more specifically to a logistics distribution box. Background Art

[0002] Logistics distribution boxes, also often referred to as logistics boxes or turnover boxes, are important equipment in the logistics industry for transportation, distribution, storage, and circulation processing. They are usually used in conjunction with warehouses and have characteristics such as acid resistance, alkali resistance, oil resistance, heat resistance, cold resistance, and being easy to clean and manage. Logistics distribution boxes play an important role in improving transportation efficiency, protecting the safety of goods, and increasing the sales and storage efficiency of items. Conventional logistics distribution boxes mainly consist of a box body, a box cover, and a lining. By setting the lining, the items transported by logistics can be fixed inside the box body to prevent them from being damaged due to the bumps during the logistics transportation process, which is beneficial to ensuring the integrity of the transported items.

[0003] The interiors of common physical distribution boxes are of the following several types: foam linings, bubble film linings, paper linings, etc. These are all disposable consumables. If the logistics distribution volume is large, a large number of such linings will be used, resulting in waste after use. Therefore, in a logistics distribution box with the publication number CN112093237B in the prior art, a movable clamping plate is provided to clamp and fix the goods to achieve the purpose of reuse. However, since the clamping plate is a flat plate, this clamping and fixing method is only applicable to goods with regular and flat surfaces. For some goods with irregular shapes, the clamping plate can only contact the most protruding positions at the edges of the goods, and there will be a lack of limitation at the concave parts of the goods, which is likely to affect the fixing effect of the entire goods. For some methods of fixing goods using inflatable airbags, as shown in the lightweight container applied to a logistics distribution unmanned aerial vehicle with the publication number CN112124790B, due to the limitation of the volume of the inflatable airbag itself, the airbag is more likely to be larger than the goods with a larger inner diameter, and for goods with a smaller inner diameter, it is very easy to affect the stability of the goods fixation because the squeezing force of the airbag on the goods is insufficient. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a logistics distribution box. First, the air inside the airtight film is evacuated to make multiple elastic balls squeeze and fix on the outer surface of the goods, and the elastic balls are used to fill the depressions on the outer surface of the goods to achieve comprehensive limitation of the goods and improve the fixing effect. Then, the inflated annular airbag and arc-shaped airbag are used to tightly clamp the airtight film inside the lower box body and the upper box body to further improve the fixing effect of the goods, so as to solve the problems arising in the above-mentioned background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A logistics distribution box, including an upper box body and a lower box body distributed up and down, the lower box body and the upper box body are movably connected through a hinge, an air suction limiting component is arranged inside the lower box body, and an inflation limiting component for fixing the air suction limiting component inside the lower box body and the upper box body is arranged outside the air suction limiting component;

[0006] The air suction limiting component includes an airtight film fixed at the bottom of the lower box body, a fixing ring is fixed at the top of the airtight film, a sealing cover for sealing the opening at the top of the fixing ring is arranged at the top of the fixing ring, a sealing ring is arranged inside the sealing cover, the top end of the fixing ring is inserted into the inside of the sealing cover and upwardly presses the sealing ring, a protective cover is fixed at the top of the sealing cover, and the protective cover is fixed at the top end inside the upper box body;

[0007] A plurality of elastic balls are filled inside the airtight film. By pumping out the air inside the airtight film, the plurality of elastic balls will squeeze the goods towards the middle and form a cavity with the same shape as the goods in the middle for fixing the goods.

[0008] In a preferred embodiment, the inflation limiting component includes an annular airbag and four arc-shaped airbags. The annular airbag is fixed at the bottom end inside the lower box body. After the annular airbag is inflated, it squeezes the lower end of the airtight film to fix the goods from the lower end. The four arc-shaped airbags are fixed on four side walls inside the upper box body. After the arc-shaped airbags are inflated, they squeeze the upper end of the airtight film to fix the goods from the upper end.

[0009] In a preferred embodiment, four rigid tubes are fixedly communicated at the top of the annular airbag, and the four rigid tubes are fixed on the inner wall of the lower box body through brackets. A hose is fixedly communicated at the bottom of each arc-shaped airbag, and the hose is fixed on the inner wall of the upper box body through brackets. Pipe joints are fixed at the top end of the rigid tube and the bottom end of the arc-shaped airbag. An annular magnet is embedded inside each pipe joint. After the upper box body covers the top of the lower box body, the hose falls directly above the rigid tube. At this time, the annular magnet inside the pipe joint installed at the top end of the rigid tube is magnetically attracted to the annular magnet inside the pipe joint installed at the bottom end of the hose for communicating the hose and the rigid tube.

[0010] In a preferred embodiment, a rubber base is fixed at the bottom end of the inner wall of the airtight film, the bottom of the rubber base is fixed to the bottom end inside the lower box body, and the top of the rubber base contacts the bottom of the goods.

[0011] In a preferred embodiment, four ear plates are fixed on the outer wall of the fixing ring, and the four ear plates are annularly arranged around the center of the fixing ring. A piston rod is fixed at the bottom of each ear plate, the bottom end of the piston rod is inserted into the inside of the piston cylinder, the four piston cylinders are respectively fixed at four corners inside the lower box body, and a spring is fixed at the bottom end inside the piston cylinder, and the top end of the spring is fixed to the bottom end of the piston rod.

[0012] In a preferred embodiment, an electromagnet is fixed on one side of the bottom end of the piston rod. A iron rod is fixed to the outer wall of the piston cylinder at the bottom of the electromagnet. A touch switch a for controlling the energization of the electromagnet is fixed on one side of the top of the lower box body. When the electromagnet is energized and adsorbs the iron rod, it drives the fixed ring to move downward and detach from the bottom of the sealing cover;

[0013] When the electromagnet is de-energized, it no longer adsorbs the iron rod, and the compressed spring pushes the fixed ring upward through the piston rod so that its top tightly fits inside the sealing cover.

[0014] In a preferred embodiment, an air extraction and inflation assembly for extracting the air inside the airtight film and inflating the annular airbag and the arc-shaped airbag is provided inside the upper box body;

[0015] The air extraction and inflation assembly includes a micro vacuum pump fixed in the middle of the top of the sealing cover. The air extraction pipe of the micro vacuum pump penetrates through the sealing cover and communicates with the inside of the airtight film. The air outlet pipe of the micro vacuum pump penetrates through the top of the upper box body and communicates with the outside;

[0016] A micro air pump is provided on one side of the micro vacuum pump. The air outlet on one side of the micro air pump is fixedly connected with an air inflation pipe. One end of the air inflation pipe is connected with a main circuit ring pipe. The main circuit ring pipe is sleeved outside the protective cover and fixed on the outer wall of the protective cover through a bracket. Four branch connecting pipes are fixedly connected to the outer wall of the main circuit ring pipe. The bottom end of the branch connecting pipe passes through the top of the arc-shaped airbag and communicates with the inside of the arc-shaped airbag.

[0017] In a preferred embodiment, a touch switch b for controlling the start of the micro vacuum pump and a touch switch c for controlling the start of the micro air pump are provided on one side of the top of the lower box body. The touch switch c is a delay touch switch, which is used to start the touch switch c to inflate the inside of the arc-shaped airbag and the inside of the annular airbag after the touch switch b starts the micro vacuum pump to evacuate the inside of the airtight film to a vacuum and automatically shuts down.

[0018] In a preferred embodiment, a buckle is provided between the lower box body and the upper box body. The buckle is composed of a lapping part and a fixed seat. The fixed seat is fixed on the side wall of the lower box body, and the lapping part is fixed on the side wall of the upper box body. The lower box body and the upper box body are fixed together through the buckle.

[0019] The technical effects and advantages of the present invention:

[0020] 1. In view of the deficiencies of the clamping plates and air bags used to fix goods in the existing logistics distribution boxes, the present invention sets up an inner and outer double-layer fixing method. First, the inside of the airtight film is evacuated to form a vacuum, so that a plurality of elastic balls are squeezed and fixed on the outer surface of the goods, and an inner cavity consistent with the appearance shape of the goods is formed inside the plurality of elastic balls. The elastic balls are used to fill the depressions on the outer surface of the goods to achieve comprehensive limitation of the goods and improve the fixing effect. Then, the inflated annular air bag and arc-shaped air bag are used to tightly clamp the airtight film inside the lower box body and the upper box body, further improving the fixing effect on the goods.

[0021] 2. The present invention uses a spring to push the piston rod to tightly clamp the fixing ring at the bottom of the sealing cover. On the one hand, the extrusion of the sealing ring by the fixing ring can enhance the sealing performance between the fixing ring and the sealing cover, ensuring that the inside of the airtight film is in a closed state. On the other hand, the sealing cover can be used to limit and fix the evacuated airtight film from the top, further improving the stability of the goods when they are fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The first view after the upper box body and the lower box body of the present invention are covered;

[0023] Figure 2 The second view after the upper box body and the lower box body of the present invention are covered;

[0024] Figure 3 The position schematic diagram of the inflatable limiting component and the air suction limiting component of the present invention;

[0025] Figure 4 The schematic diagram of fixing goods of the present invention;

[0026] Figure 5 The sectional view of the upper box body and the lower box body of the present invention;

[0027] Figure 6 The first view after the upper box body of the present invention is opened;

[0028] Figure 7 The second view after the upper box body of the present invention is opened;

[0029] Figure 8 The exploded view of the fixing ring, airtight film, rubber base, and annular air bag of the present invention;

[0030] Figure 9 The structural schematic diagram of the air suction and inflation component of the present invention.

[0031] Reference numerals are:

[0032] 1. Lower box body; 2. Upper box body; 3. Buckle; 4. Inflatable limiting component; 5. Air suction limiting component; 6. Air suction and inflation component;

[0033] 41. annular airbag; 42. arc-shaped airbag; 43. hard tube; 44. hose; 45. pipe joint; 46. annular magnet;

[0034] 51. Airtight membrane; 52. Rubber base; 53. Elastic ball; 54. Fixing ring; 55. Sealing cover; 56. Sealing ring; 57. Protective cover; 58. Ear plate; 59. Piston rod; 510. Piston cylinder; 511. Spring; 512. Iron rod; 513. Electromagnet; 514. Touch switch a;

[0035] 61. Micro vacuum pump; 62. Micro air pump; 63. Air filling tube; 64. Main loop tube; 65. Branch connecting tube; 66. Touch switch b; 67. Touch switch c. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Refer to the instruction manual Figure 1 and 2 The present invention provides a logistics distribution box, comprising an upper box body 2 and a lower box body 1 distributed up and down, wherein the lower box body 1 and the upper box body 2 are movably connected by hinges, and the upper box body 2 of the present invention can be flipped to one side to become Figure 6 , Figure 7 In the state shown in FIG. 1 , the design can conveniently place the goods inside the lower box body 1, and then reversely flip the upper box body 2 to make it as shown in FIG. Figure 1 , Figure 2 As shown, it stands on the top of the lower box body 1, and in order to be able to fix the upper box body 2 on the top of the lower box body 1, the present invention provides a buckle 3 between the lower box body 1 and the upper box body 2, and the buckle 3 consists of an overlapping portion and a fixing seat, the fixing seat is fixed on the side wall of the lower box body 1, and the overlapping portion is fixed on the side wall of the upper box body 2. After the upper box body 2 is turned over to the top of the lower box body 1, the overlapping portion on the upper box body 2 is bent to make it buckled on the fixing seat on the lower box body 1, and the lower box body 1 and the upper box body 2 are reinforced under the action of the buckle 3 to prevent the upper box body 2 from being opened due to bumps during logistics transportation.

[0038] In order to stably fix the goods inside the lower box body 1 and the upper box body 2, Figure 3 As shown, an air suction limit assembly 5 is provided inside the lower box body 1, as shown in FIG. Figures 4 - 7As shown, the air intake limit assembly 5 includes an airtight membrane 51 fixed to the bottom of the lower box body 1. At the bottom end of the inner wall of the airtight membrane 51, a rubber base 52 is fixed. The bottom of the rubber base 52 is fixed to the bottom end inside the lower box body 1, and the top of the rubber base 52 contacts the bottom of the goods. A plurality of elastic balls 53 are filled inside the airtight membrane 51, and the elastic balls 53 are located on the top of the rubber base 52;

[0039] Further, as Figures 4 - 8 shown, a fixing ring 54 is fixed to the top of the airtight membrane 51. Four ear plates 58 are fixed to the outer wall of the fixing ring 54. The four ear plates 58 are distributed in an annular array centered on the center of the fixing ring 54. The four ear plates 58 are distributed in the gaps between the four arc-shaped airbags 42 to prevent the presence of the ear plates 58 from affecting the movement of the arc-shaped airbags 42 following the upper box body 2;

[0040] A piston rod 59 is fixed to the bottom of each ear plate 58. The bottom end of the piston rod 59 is inserted into the inside of a piston cylinder 510. The four piston cylinders 510 are respectively fixed at the four corners inside the lower box body 1. A spring 511 is fixed to the bottom end inside the piston cylinder 510. The top end of the spring 511 is fixed to the bottom end of the piston rod 59. When the piston rod 59 is in a compressed state, it can push the piston rod 59, the ear plate 58 and the fixing ring 54 into an upright state, so as to be able to push up the airtight membrane 51 fixed to the bottom of the fixing ring 54 to prevent the elastic balls 53 from overflowing from inside the airtight membrane 51;

[0041] When installing the goods, just directly insert the goods into the inside of the airtight membrane 51. To facilitate pushing aside the elastic balls 53 inside the airtight membrane 51, the goods can be rotated during the insertion process until the goods are moved to the bottom of the rubber base 52. At this time, the elastic balls 53 will wrap the goods. Then, in order to enable the elastic balls 53 to tightly squeeze the goods, a sealing cover 55 for sealing the top opening of the fixing ring 54 is provided at the top of the fixing ring 54. A sealing ring 56 is provided inside the sealing cover 55. A protective cover 57 is fixed to the top of the sealing cover 55. The protective cover 57 is fixed to the top end inside the upper box body 2. Under the push of the spring 511, the top end of the fixing ring 54 will be inserted into the inside of the sealing cover 55 and upwardly squeeze the sealing ring 56, enhancing the sealing performance between the fixing ring 54 and the sealing cover 55. At the same time, the sealing cover 55 can also fix the position of the fixing ring 54 and the airtight membrane 51 from above;

[0042] Next, in coordination with the above structure, as Figure 3 and Figure 9As shown, inside the upper box body 2, there is an air extraction assembly 6 for extracting the air inside the airtight film 51. The air extraction assembly 6 includes a micro vacuum pump 61 fixed in the middle of the top of the sealing cover 55. The micro vacuum pump 61 is installed inside the protective cover 57. The air extraction pipe of the micro vacuum pump 61 penetrates through the sealing cover 55 and communicates with the inside of the airtight film 51. The air outlet pipe of the micro vacuum pump 61 penetrates through the top of the upper box body 2 and communicates with the outside. After covering the upper box body 2 on the top of the lower box body 1, the sealing cover 55 will cover on the top of the fixed ring 54, forming a sealed cavity inside the airtight film 51. Then, start the micro vacuum pump 61, use the micro vacuum pump 61 to extract the air inside the airtight film 51, reduce the air pressure inside the airtight film 51, making it less than the external atmospheric pressure. Then, due to the air pressure difference inside and outside the airtight film 51, the external atmospheric pressure will squeeze the airtight film 51 inward, enabling the elastic balls 53 to squeeze the goods towards the middle, thereby forming a cavity consistent with the shape of the goods among multiple elastic balls 53, as Figure 4 shown, and can squeeze and fix each position on the surface of the goods, enhancing the stability of the goods during the logistics transportation process;

[0043] It is worth noting that the airtight film 51 and the elastic balls 53 used in the present invention both have a certain elasticity and can deform to adapt to the extrusion of the atmospheric pressure. This characteristic can prevent the elastic balls 53 from damaging the goods;

[0044] Moreover, to reduce the manual operation steps in the above process, as Figure 6 shown, the present invention is provided with a touch switch b66 for controlling the start of the micro vacuum pump 61 on one side of the top of the lower box body 1, enabling the air extraction operation to be automatically started after the upper box body 2 is closed. Moreover, the touch switch b66 itself has a delay-off function and can control the micro vacuum pump 61 to automatically shut down after the inside of the airtight film 51 is evacuated, saving the tediousness of manual operation.

[0045] Then, in order to fix the airtight film 51 with the evacuated inside in the lower box body 1 and the upper box body 2, the present invention is provided with an inflation limiting assembly 4 for fixing the air extraction limiting assembly 5 inside the lower box body 1 and the upper box body 2. Specifically, as Figures 4 - 7 shown, the inflation limiting assembly 4 includes an annular airbag 41 and four arc-shaped airbags 42. The annular airbag 41 is fixed at the bottom end inside the lower box body 1. The four arc-shaped airbags 42 are fixed on the four side walls inside the upper box body 2. The top of the annular airbag 41 is fixedly communicated with four rigid pipes 43. The four rigid pipes 43 are fixed on the inner wall of the lower box body 1 through brackets. The bottom of each arc-shaped airbag 42 is fixedly communicated with a hose 44. The hose 44 is fixed on the inner wall of the upper box body 2 through brackets. Pipe joints 45 are fixed at the top end of the rigid pipe 43 and the bottom end of the arc-shaped airbag 42;

[0046] After the upper box body 2 is covered on the top of the lower box body 1, the hose 44 will vertically drop directly above the rigid pipe 43 under the gravity of its bottom pipe joint 45. Since an annular magnet 46 is embedded inside each pipe joint 45, the pipe joint 45 that falls directly above the rigid pipe 43 and the pipe joint 45 at the top end of the rigid pipe 43 will be fixed together under the magnetic attraction of the two annular magnets 46, connecting the rigid pipe 43 and the hose 44;

[0047] In order to inflate the annular airbag 41 and the arc-shaped airbag 42, as Figure 9 shown, a micro air pump 62 is provided on one side of the micro vacuum pump 61. The air outlet on one side of the micro air pump 62 is fixedly connected to an air charging pipe 63. One end of the air charging pipe 63 is connected to a main path loop pipe 64. The main path loop pipe 64 is sleeved outside the protective cover 57 and fixed to the outer wall of the protective cover 57 through a bracket. Four branch connecting pipes 65 are fixedly connected to the outer wall of the main path loop pipe 64. The bottom end of the branch connecting pipe 65 passes through the top of the arc-shaped airbag 42 and is connected to the inside of the arc-shaped airbag 42. Moreover, a touch switch c67 for controlling the start of the micro air pump 62 is provided on one side of the top of the lower box body 1. After the upper box body 2 is flipped and covered on the top of the lower box body 1, the touch switch c67 and the touch switch b66 are simultaneously pressed. The touch switch c67 in the present invention is a delay touch switch. This setting enables the touch switch c67 to start the micro air pump 62 after the touch switch b66 starts the micro vacuum pump 61 to evacuate the inside of the airtight film 51 into a vacuum and automatically shuts down the micro vacuum pump 61, and inflates the inside of the arc-shaped airbag 42 through the connected air charging pipe 63, main path loop pipe 64 and branch connecting pipe 65, so that the inflated arc-shaped airbag 42 can squeeze the upper end of the airtight film 51 to fix the goods from the upper end; at the same time, the annular airbag 41 is inflated through the hose 44 and the rigid pipe 43 connected to the inside of the arc-shaped airbag 42, so that the inflated annular airbag 41 can squeeze the lower end of the airtight film 51 to fix the goods from the lower end.

[0048] The present invention fixes the goods in two steps. First, the inside of the airtight film 51 is evacuated to a vacuum state, and the elastic balls 53 are squeezed by the atmospheric pressure to fix the goods inside the airtight film 51 to achieve primary fixation. Then, the inflated annular airbag 41 and arc-shaped airbag 42 clamp and fix the airtight film 51 inside the lower box body 1 and the upper box body 2 to achieve secondary fixation, thereby enhancing the fixation effect of the present invention on the goods. Moreover, by filling the elastic balls 53 around the goods, it can also meet the fixation requirements of various goods with different shapes and volumes, making the present invention worthy of being popularized and used.

[0049] In addition, since the upper box body 2 adopts an opening method of flipping, in order to prevent the fixing ring 54 from being inserted into the sealing cover 55 and affecting the flipping of the upper box body 2, as Figure 8As shown in the figure, an electromagnet 513 is fixed on one side of the bottom end of the piston rod 59 of the present invention. A iron rod 512 is fixed to the outer wall of the piston cylinder 510 at the bottom of the electromagnet 513. A touch switch a514 for controlling the energization of the electromagnet 513 is fixed on one side of the top of the lower box body 1. Press the touch switch a514 to energize the electromagnet 513. Then, when the electromagnet 513 adsorbs the iron rod 512, it drives the fixed ring 54 to move downward and detach from the bottom of the sealing cover 55. At this time, it is convenient to lift the upper box body 2 from the top of the lower box body 1. On the contrary, if the touch switch a514 is not pressed, the electromagnet 513 is in a de-energized state. At this time, the electromagnet 513 no longer adsorbs the iron rod 512, and the compressed spring 511 pushes the top of the fixed ring 54 upward through the piston rod 59 to tightly fit inside the sealing cover 55, so that an airtight space can be formed between the airtight film 51, the fixed ring 54 and the sealing cover 55;

[0050] It is worth noting that when lifting the upper box body 2, just lift the upper box body 2 upward by a little distance to disconnect the connected rigid tube 43 and the flexible tube 44, so as to discharge the gas inside the annular airbag 41 and the arc-shaped airbag 42. After deflation, the volumes of the annular airbag 41 and the arc-shaped airbag 42 will shrink and hang on the inner walls of the lower box body 1 and the upper box body 2, and will not affect the flipping operation of the upper box body 2.

[0051] Then press the touch switch a514 again to energize the electromagnet 513 to drive the fixed ring 54 to move downward, so that people can conveniently open the upper box body 2 smoothly, as Figure 6 and 7 shown, to facilitate people to take out the goods fixed inside the lower box body 1 and provide convenience for logistics distribution.

[0052] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A logistics distribution box, characterized in that: It includes an upper box body (2) and a lower box body (1) which are distributed vertically. The lower box body (1) and the upper box body (2) are movably connected by hinges. An air suction limiting component (5) is arranged inside the lower box body (1), and an inflation limiting component (4) for fixing the air suction limiting component (5) inside the lower box body (1) and the upper box body (2) is arranged outside the air suction limiting component (5). The air suction limiting component (5) includes an airtight film (51) fixed at the bottom of the lower box body (1). A fixing ring (54) is fixed at the top of the airtight film (51). A sealing cover (55) for sealing the opening at the top of the fixing ring (54) is arranged at the top of the fixing ring (54). A sealing ring (56) is arranged inside the sealing cover (55). The top end of the fixing ring (54) is inserted into the inside of the sealing cover (55) and presses the sealing ring (56) upward. A protective cover (57) is fixed at the top of the sealing cover (55), and the protective cover (57) is fixed at the top end inside the upper box body (2). A plurality of elastic balls (53) are filled inside the airtight film (51). By pumping out the air inside the airtight film (51), the plurality of elastic balls (53) will squeeze the goods towards the middle and form a cavity consistent with the shape of the goods in the middle for fixing the goods. The inflation limiting component (4) includes an annular airbag (41) and four arc-shaped airbags (42). The annular airbag (41) is fixed at the bottom end inside the lower box body (1). After the annular airbag (41) is inflated, it squeezes the lower end of the airtight film (51) to fix the goods from the lower end. The four arc-shaped airbags (42) are fixed on four side walls inside the upper box body (2). After the arc-shaped airbags (42) are inflated, they squeeze the upper end of the airtight film (51) to fix the goods from the upper end. Four rigid tubes (43) are fixedly connected to the top of the annular airbag (41). The four rigid tubes (43) are fixed on the inner wall of the lower box body (1) through brackets. A flexible tube (44) is fixedly connected to the bottom of each arc-shaped airbag (42). The flexible tube (44) is fixed on the inner wall of the upper box body (2) through brackets. Pipe joints (45) are fixed at the top end of the rigid tube (43) and the bottom end of the arc-shaped airbag (42). An annular magnet (46) is embedded inside each pipe joint (45). After the upper box body (2) covers the top of the lower box body (1), the flexible tube (44) falls directly above the rigid tube (43). At this time, the annular magnet (46) inside the pipe joint (45) installed at the top end of the rigid tube (43) is magnetically attracted to the annular magnet (46) inside the pipe joint (45) installed at the bottom end of the flexible tube (44) for connecting the flexible tube (44) and the rigid tube (43). An air suction and inflation component (6) for pumping out the air inside the airtight film (51) and inflating the annular airbag (41) and the arc-shaped airbags (42) is arranged inside the upper box body (2). The air extraction and suction assembly (6) includes a micro vacuum pump (61) fixed in the middle of the top of the sealing cover (55). The air suction pipe of the micro vacuum pump (61) penetrates through the sealing cover (55) and is internally connected to the inside of the airtight membrane (51). The air outlet pipe of the micro vacuum pump (61) penetrates through the top of the upper box body (2) and is connected to the outside; A micro air inflator (62) is provided on one side of the micro vacuum pump (61). The air outlet on one side of the micro air inflator (62) is fixedly connected to an air charging pipe (63). One end of the air charging pipe (63) is connected to a main loop pipe (64). The main loop pipe (64) is sleeved outside the protective cover (57) and is fixed to the outer wall of the protective cover (57) through a bracket. Four branch connecting pipes (65) are fixedly connected to the outer wall of the main loop pipe (64). The bottom end of the branch connecting pipe (65) passes through the top of the arc-shaped airbag (42) and is internally connected to the inside of the arc-shaped airbag (42).

2. The logistics distribution box according to claim 1, characterized in that: A rubber base (52) is fixed to the bottom end of the inner wall of the airtight membrane (51). The bottom of the rubber base (52) is fixed to the bottom end inside the lower box body (1). The top of the rubber base (52) contacts the bottom of the goods.

3. The logistics distribution box according to claim 1, wherein: Four ear plates (58) are fixed to the outer wall of the fixing ring (54). The four ear plates (58) are distributed in a circular array centered on the center of the fixing ring (54). A piston rod (59) is fixed to the bottom of each ear plate (58). The bottom end of the piston rod (59) is inserted into the inside of a piston cylinder (510). The four piston cylinders (510) are respectively fixed at the four corners inside the lower box body (1). A spring (511) is fixed to the bottom end inside the piston cylinder (510). The top end of the spring (511) is fixed to the bottom end of the piston rod (59).

4. A logistics distribution box according to claim 3, characterized in that: An electromagnet (513) is fixed to one side of the bottom end of the piston rod (59). A iron rod (512) fixed to the outer wall of the piston cylinder (510) is provided at the bottom of the electromagnet (513). A touch switch a (514) for controlling the energization of the electromagnet (513) is fixed to one side of the top of the lower box body (1). When the electromagnet (513) is energized and adsorbs the iron rod (512), it drives the fixing ring (54) to move downward and separate from the bottom of the sealing cover (55); When the electromagnet (513) is powered off and no longer adsorbs the iron rod (512), the compressed spring (511) pushes the fixing ring (54) upward through the piston rod (59) so that its top end is tightly embedded inside the sealing cover (55).

5. A logistics distribution box according to claim 4, characterized in that: A touch switch b (66) for controlling the start of the micro vacuum pump (61) and a touch switch c (67) for controlling the start of the micro air inflator (62) are provided on one side of the top of the lower box body (1). The touch switch c (67) is a delay touch switch, which is used to start the touch switch c (67) to inflate the inside of the arc-shaped airbag (42) and the inside of the annular airbag (41) after the touch switch b (66) starts the micro vacuum pump (61) to evacuate the inside of the airtight membrane (51) and automatically shuts down.

6. The logistics distribution box according to claim 1, characterized in that: There is a buckle (3) between the lower box body (1) and the upper box body (2). The buckle (3) consists of a lapping part and a fixed seat. The fixed seat is fixed on the side wall of the lower box body (1), and the lapping part is fixed on the side wall of the upper box body (2). The lower box body (1) and the upper box body (2) are fixed together through the buckle (3).

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