A packaging box capable of extracting and releasing air

Abstract

The present invention belongs to the technical field of luggage cases, and specifically relates to a packing box that can be deflated, comprising a box body, an air pumping and inflating mechanism, a protective mechanism and a supplementary air pumping mechanism, wherein the box body comprises a first box body with an open top structure and a second box body hinged at one side of the first box body and having an inner liner; the air pumping and inflating mechanism is mounted on the second box body, wherein when there are more clothes in the inner liner of the second box body, the air pumping and inflating mechanism operates to pump air from the inner liner of the second box body, and when there are fewer items in the inner liner of the second box body, the air pumping and inflating mechanism operates to inflate the inner liner of the second box body; the protective mechanism is mounted in the inner liner of the second box body; the supplementary air pumping mechanism is mounted on the second box body, which solves the problem that a user needs to inflate or pump air from the inside of the box body again after temporarily taking items on the way, which is relatively time-consuming and inconvenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of luggage boxes, in particular to a packaging box capable of extracting and releasing air. Background Art

[0002] There are many types of packing boxes, among which suitcases are one of the most commonly used ones in people's daily lives. Suitcases, also known as travel suitcases and trolley cases, are boxes used to place items when going out. They are one type of luggage. Suitcases are usually used to place clothes, personal care products, souvenirs, etc. needed for travel.

[0003] When a suitcase is in use, it is often encountered that the interior of the suitcase is not full or there are too many clothes and it is inconvenient to compress the space. Therefore, a suitcase with an air pumping and deflation function has been developed. When there are too many clothes, the interior of the suitcase can be evacuated and compressed. When there are fewer items in the suitcase and it is unstable, the interior of the suitcase can be inflated to increase the stability of the items during the movement.

[0004] However, the interior of the current suitcases with air extraction and deflation is mainly integrated. For example, if you need to temporarily take out necessities from the inside of the suitcase during the journey, you need to evacuate or inflate the inside of the suitcase again, which is time-consuming and inconvenient to use. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] Therefore, the purpose of the present invention is to provide a packaging box that can be deflated to replace the traditional suitcase that can be deflated, so as to avoid the problem that the user needs to inflate or deflate the box again when he needs to temporarily take items during the journey, which is quite time-consuming and inconvenient to use.

[0007] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A packaging box capable of extracting and degassing air, comprising:

[0009] The box body comprises a first box body with an open top structure and a second box body hinged to one side of the first box body and having an inner liner therein;

[0010] an air pumping and inflating mechanism installed on the second box body, wherein when the inner liner of the second box body contains more clothes, the air pumping and inflating mechanism operates to pump air from the inner liner of the second box body, and when the inner liner of the second box body contains less clothes, the air pumping and inflating mechanism operates to inflate the inner liner of the second box body;

[0011] A protective mechanism is installed in the inner liner of the second box body, wherein when the pumping and inflating mechanism works to inflate the inner liner of the second box body, the protective mechanism is driven to work to expand and fill the inner space of the inner liner of the second box body;

[0012] A supplementary air extraction mechanism is installed on the second box body, wherein when the second box body moves, the supplementary air extraction mechanism automatically extracts air from the inner liner of the second box body.

[0013] As a preferred solution of the degassable packaging box described in the present invention, two sealing curtains for sealing the opening of the inner liner are symmetrically arranged at the opening of the inner liner of the second box body, and a sealing zipper is arranged at the connection of the two sealing curtains.

[0014] As a preferred solution of the packaging box capable of extracting and releasing air according to the present invention, a connecting groove is provided on the top of the sealing curtain;

[0015] The pumping and inflating mechanism comprises a micro air pump with inflation and pumping functions and an air guide component having one end connected to the output end of the micro air pump and the other end connected to the connecting groove.

[0016] As a preferred solution of the degassable packaging box described in the present invention, the air guide assembly includes a first tube body having two snap rings on the side wall and located in the connecting groove, and a second tube body having one end connected to the bottom of the first tube body and the other end extending into the inner liner of the second box body.

[0017] As a preferred solution of the degassable packaging box of the present invention, the protective mechanism includes an air bag located on the inner wall around the inner liner of the second box body and having a degassing port on the top, and an inflation port located on the top of the air bag;

[0018] The air guide assembly also includes a third tube body having one end connected to the side wall of the second tube body and the other end connected to the inflation port through a hose.

[0019] As a preferred solution of the deflatable packaging box described in the present invention, the inner wall of the second tube body is hinged with a sealing plate for sealing the bottom opening of the second tube body when the micro air pump inflates the first tube body.

[0020] As a preferred solution of the degassable packaging box described in the present invention, an extension tube extending into the inner liner of the second box body and having a plurality of holes on the side wall is provided at the bottom of the second tube body.

[0021] As a preferred solution of the degassable packaging box described in the present invention, a sundries bag is provided on the inner wall of the first box body.

[0022] As a preferred solution of the degassable packaging box of the present invention, pulleys are provided at the bottom of the first box body and the second box body, and a connecting pipe communicating with the inner liner is provided at the bottom of the second box body;

[0023] The supplementary air extraction mechanism includes a fan located in the connecting pipe, a first bevel gear whose side wall at one end is connected to the side wall of the fan via a rotating shaft, and a second bevel gear meshing with the first bevel gear and whose side wall is connected to the pulley side wall at the bottom of the second box body via a rotating shaft.

[0024] As a preferred solution of the degassable packaging box described in the present invention, a one-way valve is provided at one end of the connecting pipe adjacent to the inner liner of the second box body.

[0025] Compared with the prior art, the present invention has the beneficial effect that the deflatable packaging box avoids frequent deflating or inflation by placing frequently used items in the first box body and infrequently used items in the second box body. At the same time, when there are fewer items in the second box body and the second box body needs to be inflated, the internal space of the liner is expanded and filled by the protective mechanism, thereby squeezing and fixing the outside of the items, making the items in the liner more stable. When the second box body moves, the air is automatically deflated by the supplementary air-pumping mechanism, thereby avoiding the situation in which the compressed clothes in the second box body become loose and expand due to insufficient sealing of the liner after a long period of deflating and compression when there are many items in the second box body. The packaging box replaces the traditional deflatable luggage box and avoids the problem that the user needs to inflate or deflat the inside of the box again when he needs to temporarily take items on the way, which is a waste of time and inconvenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0027] Figure 1 It is a schematic structural diagram of a packaging box capable of extracting and releasing air when the sealing curtain is opened according to the present invention;

[0028] Figure 2 It is a schematic structural diagram of a sealing curtain of a packaging box capable of extracting and releasing air according to the present invention when it is closed;

[0029] Figure 3 This is a structural disassembled diagram of a packaging box capable of extracting and releasing gas according to the present invention;

[0030] Figure 4 It is a structural schematic diagram of an air guide component of a packaging box capable of extracting and releasing air according to the present invention;

[0031] Figure 5 A cross-sectional view of an air guide assembly of a packaging box capable of extracting and releasing air according to the present invention;

[0032] Figure 6 The figure is a schematic structural diagram of a second box body of a packaging box capable of extracting and releasing air according to the present invention.

[0033] In the figure: 100, box body; 110, first box body; 110a, sundries bag; 120, second box body; 120a, sealing curtain; 120a-1, sealing zipper; 120a-2, connecting groove; 120b, connecting pipe; 200, suction and inflation mechanism; 210, micro air pump; 220, air guide component; 220a, first tube body; 220a-1, snap ring; 220b, second tube body; 220b-1, sealing plate; 220b-2, extension tube; 220c, third tube body; 300, protection mechanism; 310, air bag; 310a, air release port; 320, inflation port; 400, supplementary suction mechanism; 410, fan; 420, first bevel gear; 430, second bevel gear. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0036] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] The present invention provides a packing box capable of pumping and deflating air, which replaces a traditional luggage box capable of pumping and deflating air, thereby avoiding the problem that a user needs to inflate or deflat the inside of the box again when he needs to temporarily take an item during a journey, which is relatively time-consuming and inconvenient to use.

[0038] Figure 1-Figure 6 The structure diagram of a packaging box capable of extracting and releasing gas according to the present invention is shown in FIG. Figure 1-Figure 6 A detailed introduction is given to this type of packaging box that can be evacuated and deflated. Example 1

[0039] refer to Figure 1-Figure 6 The present invention discloses a packaging box that can be evacuated and deflated, the main body of which includes a box body 100, an air extraction and inflation mechanism 200, a protection mechanism 300 and a supplementary air extraction mechanism 400.

[0040] refer to Figure 1-Figure 3 The box 100 is used to store and hold items of the user. The box 100 includes a first box body 110 with an open top structure and a second box body 120 hinged on one side of the first box body 110 and having an inner liner. The first box body 110 is used to facilitate the user to place some commonly used items, and the inner liner of the second box body 120 is used to place infrequently used items, so that the commonly used items and the infrequently used items are stored separately. When the user needs to take out the commonly used items, he can directly take them out from the first box body 110 without opening the entire box body 100, thereby avoiding the need to perform a second pumping and inflating operation.

[0041] refer to Figure 1-Figure 3 The pumping and inflating mechanism 200 is used to pump air from the inner liner of the second box body 120 when there are many items such as clothes to be stored in the inner liner of the second box body 120 and the space needs to be compressed. When there are few items in the inner liner of the second box body 120 and it is easy to be unstable and damaged during movement, the space inside the inner liner of the second box body 120 is inflated to improve the stability of the items. The pumping and inflating mechanism 200 is installed on the second box body 120. When there are many items in the inner liner of the second box body 120, the pumping and inflating mechanism 200 The air pumping mechanism 200 works to evacuate the inner liner of the second box body 120, thereby evacuating the excess air in the inner liner and compressing the space in the inner liner, so as to facilitate the second box body 120 to accommodate more clothes and other items. When there are fewer items in the inner liner of the second box body 120, the air pumping mechanism 200 works to inflate the inner liner of the second box body 120, so that the air in the inner liner expands and exerts pressure on the surroundings of the items, thereby increasing the stability of the items in the inner liner and reducing the damage caused by the shaking of the items during the movement of the box body 100.

[0042] refer to Figure 6The protective mechanism 300 is used to clamp and fix the objects in the inner liner when there are fewer objects in the inner liner of the second box body 120 and the inner liner needs to be inflated, thereby improving the stability of the objects in the inner liner when the box body 100 moves. The protective mechanism 300 is installed in the inner liner of the second box body 120, wherein, when the pumping and inflating mechanism 200 works to inflate the inner liner of the second box body 120, the protective mechanism 300 is driven to work, and the internal space of the inner liner of the second box body 120 is expanded and filled, so that when the pumping and inflating mechanism 200 inflates the inner liner of the second box body 120, the protective mechanism 300 automatically expands in the internal space of the inner liner and fills the internal space of the inner liner, thereby wrapping the periphery of the objects in the inner liner, so that the objects are fixed inside the inner liner, thereby preventing the objects from shaking unsteadily inside the inner liner when the box body 100 moves, causing damage to the objects;

[0043] refer to Figure 1-Figure 3 The supplementary air extraction mechanism 400 is used to automatically and continuously extract air from the inner liner of the second box body 120 during the movement of the box body 100. The supplementary air extraction mechanism 400 is installed on the second box body 120, wherein when the second box body 120 moves, the supplementary air extraction mechanism 400 automatically extracts air from the inner liner of the second box body 120, and then during the movement of the box body 100, the supplementary air extraction mechanism 400 automatically and continuously extracts air from the inner liner of the second box body 100, so that the inner liner of the second box body 120 is always in a compressed state, avoiding the situation in which, after the suction and inflation mechanism 200 extracts and compresses the inner liner of the second box body 120, air enters the inner liner due to insufficient airtightness during a long period of movement, and the compressed clothes expand again, causing the inner liner or the box body 100 to be deformed or damaged.

[0044] In this embodiment, the specific usage process is as follows: when the box 100 needs to be used to store items, frequently used items are placed in the first box body 110, and infrequently used items are placed in the inner liner of the second box body 120. When there are many items to be stored in the inner liner of the second box body 120, the inner liner of the second box body 120 is evacuated by the pumping and inflating mechanism 200 to compress the clothes and other items in the inner liner, thereby reducing the space occupied by the clothes and other items in the inner liner and increasing the storage capacity of the second box body 120. At the same time, during the subsequent movement of the box body 100, the second box body 120 is automatically and continuously evacuated by the supplementary pumping mechanism 400. The air is filled in the inner liner of the second box body 120, so that the interior of the second box body 120 is always in a compressed state. When the items placed in the inner liner of the second box body 120 are small and easily damaged, the inner liner of the second box body 120 is inflated by the pumping and inflating mechanism 200. At this time, the protective mechanism 300 automatically expands inside the inner liner to fill the internal space of the inner liner, so that the periphery of the items is wrapped, the stability of the items inside the inner liner is increased, and the damage of the items inside the second box body 120 when the box body 100 is moved is reduced. When common items need to be stored and retrieved midway, they can be directly stored and retrieved from the inside of the first box body 110 without the need to pump and deflate the inside of the second box body 120 again. Example 2

[0045] Based on Example 1, Figure 1-Figure 3 Two sealing curtains 120a are symmetrically arranged at the opening of the inner liner of the second box body 120 to seal the opening of the inner liner. After the air in the inner liner of the second box body 120 is evacuated, the inner liner is separated from the first box body 110 and then sealed. A sealing zipper 120a-1 is arranged at the connection of the two sealing curtains 120a to connect the two sealing curtains 120a after the items are placed in the inner liner. At the same time, the sealing zipper 120a-1 increases the airtightness of the connection between the two sealing curtains 120a.

[0046] In this embodiment, reference Figure 3 A connecting groove 120a-2 is provided at the top of the sealing curtain 120a for convenient installation of the pumping and inflating mechanism 200;

[0047] refer to Figure 3The pumping and inflation mechanism 200 includes a micro air pump 210 with inflation and pumping functions and an air guide component 220 having one end connected to the output end of the micro air pump 210 and the other end connected to the connecting groove 120a-2. The micro air pump 210 is a dual-purpose air pump for pumping and inflation, and is used to pump air or inflate the inside of the second box body 120 through the air guide component 220 during operation. The air guide component 220 is used to maintain air circulation between the inner liner of the second box body 120 and the outside world when the micro air pump 210 is working, thereby facilitating the pumping or inflation of the inside of the second box body 120.

[0048] In this embodiment, reference Figure 3-Figure 5 The air guide component 220 includes a first tube body 220a with two snap rings 220a-1 on the side wall and located in the connecting groove 120a-2, and a second tube body 220b with one end connected to the bottom of the first tube body 220a and the other end extending into the inner liner of the second box body 120. The first tube body 220a is used to be connected to the output end of the micro air pump 210 at one end, so that when the micro air pump 210 is working, the first tube body 220a is used to evacuate or pump air into the second tube body 220b. Inflation, the clamping ring 220a-1 is used to cooperate with the upper and lower ends of the connecting groove 120a-2 to clamp the first tube body 220a in the connecting groove 120a-2, and the second tube body 220b is used to maintain the circulation of air between the inner liner of the second box body 120 and the inside of the first tube body 220a, so as to cooperate with the first tube body 220a, so that when the micro air pump 210 is working, the inner liner of the second box body 120 is evacuated or inflated through the first tube body 220a and the second tube body 220b.

[0049] In this embodiment, the specific working process is as follows: after the items are placed into the inner liner of the second box body 120, the two sealing curtains 120a are tightened by the sealing zipper 120a-1, and then the output end of the micro air pump 210 is connected to the first tube body 220a, and then the micro air pump 210 works in conjunction with the first tube body 220a and the second tube body 220b to achieve vacuuming or inflation of the inner liner of the second box body 120. Example 3

[0050] Based on Example 2, Figure 3 and Figure 6In order to prevent the second box body 120 from having a poor stabilizing effect on the items after being inflated when there are few items inside the liner of the second box body 120, resulting in the items shaking unsteadily when the box body 100 moves, the protective mechanism 300 includes an airbag 310 located on the inner wall around the liner of the second box body 120 and having an air release port 310a on the top, and an air filling port 320 located on the top of the airbag 310. The airbag 310 is used to expand when the micro air pump 210 is working to inflate the second box body 120 when there are few items inside the second box body 120, so that the expanded airbag 310 fills the internal space of the liner of the second box body 120, so that the items are wrapped around by the expanded airbag 310, so that the items are clamped stably. The air release port 310a is used to deflate the airbag 310 when it is necessary to take out the items inside the liner, and the air filling port 320 is used to introduce air into the airbag 310 when the micro air pump 210 is working to inflate.

[0051] refer to Figure 3-Figure 5 The air guide component 220 also includes a third tube body 220c, one end of which is connected to the side wall of the second tube body 220b and the other end of which is connected to the inflation port 320 through a hose. The third tube body 220c is used for inflation when the micro air pump 210 is working. After the air passes through the first tube body 220a and the second tube body 220b and enters the third tube body 220c, the air is introduced into the inflation port 320, thereby inflating the airbag 310 and causing the airbag 310 to expand.

[0052] In this embodiment, reference Figure 5 The inner wall of the second tube 220b is hinged with a sealing plate 220b-1 for sealing the bottom opening of the second tube 220b when the micro air pump 210 inflates the first tube 220a. The sealing plate 220b-1 is used to seal the bottom opening of the second tube 220b when there are fewer items in the inner liner of the second box 100 and the micro air pump 210 is working to inflate, so that air can enter the airbag 310 through the third tube 220c, causing the airbag 310 to expand, thereby preventing air from directly entering the inner liner through the bottom opening of the second tube 220b. As a result, as the micro air pump 210 continues to inflate, the air pressure inside the inner liner and the air pressure inside the airbag 310 increase at the same time, causing the outer wall of the airbag 310 to be squeezed by the air inside the inner liner, and the airbag 310 cannot be fully inflated, thereby making it impossible to completely wrap the periphery of the items, thereby reducing the stability of the items in the inner liner.

[0053] In this embodiment, the specific working process is as follows: when there are fewer items inside the inner liner of the second box body 120, the micro air pump 210 is operated to inflate, and the air enters the second tube body 220b through the first tube body 220a. At this time, the top of the sealing plate 220b-1 is squeezed by the air to seal the bottom opening of the second tube body 220b, and the air in the second tube body 220b all enters the third tube body 220c, and then enters the airbag 310 through the inflation port 320. After the airbag 310 expands, it wraps the side walls of the items around, thereby improving the stability of the items inside the inner liner. Example 4

[0054] Based on Example 3, Figure 1-Figure 3 In order to prevent the compressed clothes and other items from returning to their original state due to insufficient airtightness inside the inner liner of the second box body 120 during long-term movement, resulting in the sealing curtain 120a being damaged due to excessive pressure from the inner liner, pulleys are provided at the bottom of the first box body 110 and the second box body 120 to facilitate the movement of the box body 100, and a connecting pipe 120b connected to the inner liner is provided at the bottom of the second box body 120 to facilitate the installation of the fan 410 and to maintain the circulation of air between the outside and the inner liner when the fan 410 rotates;

[0055] refer to Figure 3 The supplementary exhaust mechanism 400 includes a fan 410 located in the connecting pipe 120b, a first bevel gear 420 having a side wall at one end connected to the side wall of the fan 410 through a rotating shaft, and a second bevel gear 430 meshing with the first bevel gear 420 and having a side wall connected to the pulley side wall at the bottom of the second box body 120 through a rotating shaft. The fan 410 is used to exhaust air from the inside of the inner tank through the connecting pipe 120b when it rotates, so that the internal space of the inner tank is always in a compressed state. The first bevel gear 420 is used to drive the fan 410 to rotate when it rotates, and the second bevel gear 430 is used to drive the first bevel gear 420 to rotate when the pulley rotates and drives it to rotate, and then when the pulley rotates, it drives the second bevel gear 430 to rotate. When the second bevel gear 430 rotates, it drives the first bevel gear 420 to rotate. When the first bevel gear 420 rotates, it drives the fan 410 to rotate. When the fan 410 rotates, it exhausts air from the inside of the inner tank through the connecting pipe 120b, so that the inside of the inner tank is continuously exhausted.

[0056] In this embodiment, a one-way valve is provided at one end of the connecting tube 120b adjacent to the inner liner of the second box body 120, so that the air inside the inner liner can only be discharged outward through the connecting tube 120b, and the outside air cannot enter the inner liner through the connecting tube 120b, thereby preventing the inner liner and the outside air from arbitrarily circulating through the connecting tube 120b, so that after the box body 100 stops moving, the air pressure inside the inner liner tends to be equal to that of the outside, resulting in the inability to complete the compression of the air inside the inner liner when there are many items.

[0057] In this embodiment, the specific working process is as follows: when the box body 100 moves, the rolling of the pulley drives the second bevel gear 430 to rotate, and then drives the fan 410 to rotate through the first bevel gear 420 to continuously evacuate the inner liner of the second box body 120, so as to avoid that during a long period of movement, the compressed clothes and other items inside the inner liner will become fluffy again and expand inside the inner liner due to insufficient airtightness of the inner liner, thereby causing the sealing curtain 120a to be damaged by excessive pressure from the inner liner. In this embodiment, even if there are fewer items inside the inner liner of the second box body 120, the airbag 310 will wrap the items on all sides after expansion, and there is no need to evacuate the inner liner at this time. Since the air in the inner liner is filled with items and the expanded airbag 310, the rotation of the fan 410 only continuously extracts a small amount of air from the inner liner, which will not affect the stability of the items inside the inner liner. Example 5

[0058] Based on Example 4, Figure 3-Figure 5 An extension tube 220b-2 extending into the inner liner of the second box body 120 and having a plurality of holes on the side wall is provided at the bottom of the second tube body 220b, and is used to extend the extension tube 220b-2 to a deeper part of the inner liner. The holes facilitate multi-angle extraction when the inner liner is evacuated, thereby preventing the bottom opening of the second tube body 220b from being blocked by items such as clothing, which would affect the extraction efficiency.

[0059] In this embodiment, reference Figure 1-Figure 3 The inner wall of the first box body 110 is provided with a sundries bag 110a for conveniently storing the micro air pump 210 or some commonly used small items.

[0060] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A packaging box capable of extracting and releasing air, characterized in that: include: A box body (100) comprising a first box body (110) with an open top structure and a second box body (120) hinged to one side of the first box body (110) and having an inner liner; an air pumping and inflating mechanism (200) mounted on the second box body (120), wherein when there are more clothes in the inner liner of the second box body (120), the air pumping and inflating mechanism (200) operates to pump air from the inner liner of the second box body (120); and when there are fewer items in the inner liner of the second box body (120), the air pumping and inflating mechanism (200) operates to inflate the inner liner of the second box body (120); a protective mechanism (300) installed in the inner liner of the second box body (120), wherein when the pumping and inflating mechanism (200) operates to inflate the inner liner of the second box body (120), the protective mechanism (300) is driven to operate to expand and fill the inner space of the inner liner of the second box body (120); a supplementary air extraction mechanism (400) mounted on the second box body (120), wherein when the second box body (120) moves, the supplementary air extraction mechanism (400) automatically extracts air from the inner liner of the second box body (120); The air guide component (220) comprises a first tube (220a) and a second tube (220b) having one end connected to the bottom of the first tube (220a) and the other end extending into the inner liner of the second box body (120); The protective mechanism (300) comprises an air bag (310) located on the inner wall of the inner liner of the second box body (120) and having an air release port (310a) on the top, and an air filling port (320) located on the top of the air bag (310); The air guide assembly (220) further comprises a third tube (220c) having one end connected to the side wall of the second tube (220b) and the other end connected to the inflation port (320) via a hose; A sealing plate (220b-1) is hingedly connected to the inner wall of the second tube body (220b) for sealing the bottom opening of the second tube body (220b) when the micro air pump (210) inflates the first tube body (220a); The bottom of the first box body (110) and the bottom of the second box body (120) are provided with pulleys, and the bottom of the second box body (120) is provided with a connecting pipe (120b) communicating with the inner container; The supplementary air extraction mechanism (400) comprises a fan (410) located in the connecting pipe (120b), a first bevel gear (420) whose side wall at one end is connected to the side wall of the fan (410) via a rotating shaft, and a second bevel gear (430) meshing with the first bevel gear (420) and whose side wall is connected to the pulley side wall at the bottom of the second box body (120) via a rotating shaft.

2. A degassable packaging box according to claim 1, characterized in that: Two sealing curtains (120a) for sealing the opening of the inner liner are symmetrically arranged at the opening of the inner liner of the second box body (120), and a sealing zipper (120a-1) is arranged at the connection between the two sealing curtains (120a).

3. A degassable packaging box according to claim 2, characterized in that: A connecting groove (120a-2) is provided on the top of the sealing curtain (120a); The pumping and inflating mechanism (200) comprises a micro air pump (210) having inflation and pumping functions, and an air guide component (220) having one end connected to the output end of the micro air pump (210) and the other end connected to the connecting groove (120a-2).

4. The degassable packaging box according to claim 3, characterized in that: The side wall of the first tube body (220a) has two clamping rings (220a-1) and is located in the connecting groove (120a-2).

5. The degassable packaging box according to claim 4, characterized in that: An extension tube (220b-2) is provided at the bottom of the second tube body (220b), the extension tube (220b-2) extending into the inner container of the second box body (120) and having a plurality of holes on the side wall.

6. The degassable packaging box according to claim 1, characterized in that: The inner wall of the first box body (110) is provided with a sundries bag (110a).

7. The degassable packaging box according to claim 1, characterized in that: A one-way valve is provided at one end of the connecting pipe (120b) adjacent to the interior of the inner container of the second box body (120).

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