CN212767556U

CN212767556U - Airtight bag

Info

Publication number: CN212767556U
Application number: CN202020945912.7U
Authority: CN
Inventors: 余伟挺
Original assignee: Shenzhen Lepaishi Trading Co ltd
Current assignee: Shenzhen Paileshi Industrial Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-03-23
Anticipated expiration: 2030-05-29

Abstract

The utility model belongs to the technical field of articles for daily use, in particular to an airtight bag, which comprises a first bag body and a second bag body, wherein the first bag body and the second bag body are connected and enclosed to form a three-dimensional airtight space, the first bag body and/or the second bag body are provided with an opening communicated with the airtight space, the opening is provided with a sealing locking piece used for opening or closing the airtight space, and the first bag body and/or the second bag body are provided with an exhaust device used for exhausting gas in the airtight space; the waterproof and breathable fabric layer and the waterproof and breathable layer are mutually connected and stacked, the waterproof and breathable layer of the first bag body is arranged opposite to the waterproof and breathable layer of the second bag body, and the circumferential part of the waterproof and breathable layer of the first bag body is fixedly combined with the circumferential part of the waterproof and breathable layer of the second bag body to form a closed space. The cloth layer of this airtight bag is located the outside of airtight bag, and the cloth layer material is soft, has improved user's contact and has felt.

Description

Airtight bag

Technical Field

The utility model belongs to the technical field of articles for daily use, especially, relate to an airtight bag.

Background

An airtight bag is a container that can achieve a predetermined degree of vacuum in a sealed bag body by removing air from the inside, and is widely used in production and daily life, for example, food preservation, compressed clothes storage, and the like.

At present, most of the airtight bags in the market comprise a bag body, the bag body is made of plastic materials, and the compression sealing function of the airtight bags is realized through the waterproof and airtight performance of the plastic materials; however, during the use of the airtight bag, the user directly contacts the plastic material, resulting in poor user's feeling.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an airtight bag aims at solving the airtight bag among the prior art and adopts the plastics material to have the technical problem who uses and feel poor.

In order to achieve the above object, the utility model adopts the following technical scheme: an airtight bag is arranged in a luggage and comprises a first bag body and a second bag body, wherein the first bag body and the second bag body are connected with each other and can enclose a closed space forming a three-dimensional body, an opening communicated with the closed space is formed in the first bag body and/or the second bag body, a sealing locking piece used for opening or closing the closed space is arranged on the opening, and an exhaust device used for exhausting gas in the closed space is arranged on the first bag body and/or the second bag body; the first bag body and the second bag body both comprise a cloth layer and a waterproof and air-impermeable layer which are connected with each other, the waterproof and air-impermeable layer of the first bag body and the waterproof and air-impermeable layer of the second bag body are arranged oppositely, and the circumferential part of the waterproof and air-impermeable layer of the first bag body and the circumferential part of the waterproof and air-impermeable layer of the second bag body are fixedly combined together to form the closed space in a surrounding manner.

Optionally, the waterproof and air-impermeable layer is compounded on the surface of the cloth layer; or the periphery of the waterproof and air-impermeable layer is connected with the periphery of the cloth layer.

Optionally, the waterproof and air-impermeable layer is a TPU layer, a PE layer, a PPC layer, a PE layer, a PA layer, a PU layer, an EVA layer, or a PVC layer.

Optionally, the first bag body comprises a first bottom and a first side wall, the first side wall is connected with the periphery of the first bottom, and a first closed half cavity is formed by the first bottom and the first side wall in a surrounding manner; the second bag body comprises a second bottom and a second side wall, the second side wall is connected with the periphery of the second bottom, and a second closed half cavity is formed by the second bottom and the second side wall in a surrounding mode; the periphery of the first side wall part facing away from the first bottom part is butted with the periphery of the second side wall part facing away from the second bottom part, so that the first closed half cavity and the second closed half cavity form the closed space.

Optionally, when the airtight bag is unloaded, the second bag body is located in the first closed half cavity, the second side wall portion is attached to the inner peripheral wall of the first side wall portion, and the second bottom portion is attached to the first bottom portion; or the first bag body is positioned in the second closed half cavity, the first side wall part is attached to the inner peripheral wall of the second side wall part, and the first bottom part is attached to the second bottom part;

when the airtight bag is in a full-load state, the second bag body is positioned outside the first sealed half cavity, and the first sealed half cavity and the second sealed half cavity are just communicated.

Optionally, the first side wall portion comprises at least two first side wall portions which are connected end to end in sequence, and the side portions of two adjacent first side wall portions are fixedly combined together; the second side wall part comprises at least two second side wall parts which are connected end to end in sequence, and the edge parts of the two adjacent second side wall parts are fixedly combined together.

Optionally, the first sidewall section is formed by bending from an edge of the first bottom towards the second bottom; the second sidewall section is formed by bending from an edge of the second bottom toward the first bottom.

Optionally, a connecting portion, which is used for being connected with the luggage and has a width of 5mm to 30mm, is reserved at the circumferential edge of the first bag body and/or the circumferential edge of the second bag body.

Optionally, the exhaust means is a one-way valve.

Optionally, the exhaust device includes an air outlet port and a cover, the first bag body and/or the second bag body is provided with the air outlet port communicated with the closed space, and the cover is movably connected to the air outlet port and used for opening or closing the air outlet port.

The utility model provides an above-mentioned one or more technical scheme in the airtight bag have one of following technological effect at least: the cloth layer of the airtight bag is positioned on the outer side of the airtight bag, so that a user is in contact with the cloth layer, the cloth layer is soft in material, and the contact hand feeling of the user is improved; in addition, the waterproof and airtight layer has waterproof and airtight performance, so that waterproof and airtight can be realized in the airtight space.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of an airtight bag in a fully loaded state according to an embodiment of the present invention.

Figure 2 is a schematic view of the airtight bag shown in figure 1 in an unloaded state.

Fig. 3 is a sectional view taken along line a-a in fig. 1.

Wherein, in the figures, the respective reference numerals:

30-airtight bag 31-first bag 32-second bag

40-seal lock 50-exhaust 311-first sidewall portion

312-cloth layer 313-waterproof and air-impermeable layer 314-first closed half cavity

321-second bottom 322-second sidewall portion 3111-first sidewall portion

3221-second sidewall section 3222-edge portion 3223-connecting portion.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-3 are exemplary and intended to be used to illustrate the invention, but should not be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 3, in an embodiment of the present invention, an airtight bag 30 is provided for being disposed inside a bag, for example: can be arranged in the containing space of the parts such as a luggage case, a backpack, a handbag and the like.

The airtight bag 30 comprises a first bag body 31 and a second bag body 32, wherein the first bag body 31 and the second bag body 32 are connected with each other and can enclose a closed space forming a three-dimensional space, an opening used for being communicated with the closed space is formed in the first bag body 31 and/or the second bag body 32, and a sealing locking piece 40 used for opening or closing the closed space is arranged in the opening, wherein the opening and closing of the closed space are realized through the opening and closing of the sealing locking piece 40, so that articles can be conveniently placed into or taken out of the closed space; wherein, the closed space can be in the shape of a cuboid, a cube or a cylinder and the like.

Further, the first bag body 31 and/or the second bag body 32 are/is provided with an exhaust device 50 for exhausting gas in the closed space, wherein after the article is placed in the closed space, the gas in the closed space can be exhausted by the exhaust device 50, so that the article is compressed, the volume of the article is reduced, more articles are prevented, and the loading capacity of the airtight bag 30 is improved; the air exhausting device 50 may be disposed on the first bag body 31, or may be disposed on the second bag body 32, or both the first bag body 31 and the second bag body 32 are provided with a check valve; after the article is placed in the sealed space in the airtight bag 30 and the sealing and locking device is closed, the first bag body 31 and the second bag body 32 are pressed to discharge the gas in the sealed space from the gas discharge device 50, thereby implementing the compression function of the airtight bag 30.

Further, referring to fig. 3, each of the first bag body 31 and the second bag body 32 includes a cloth layer 312 and a waterproof and air-impermeable layer 313 that are connected to each other and stacked, the waterproof and air-impermeable layer 313 of the first bag body 31 and the waterproof and air-impermeable layer 313 of the second bag body 32 are disposed opposite to each other, and a circumferential portion of the waterproof and air-impermeable layer 313 of the first bag body 31 and a circumferential portion of the waterproof and air-impermeable layer 313 of the second bag body 32 are fixedly combined together to form a closed space.

Specifically, compared with the prior art, the airtight bag 30 of the embodiment of the present invention has the cloth layer 312 located outside the airtight bag 30, so that the user contacts with the cloth layer 312, the cloth layer 312 is soft in material, and the contact hand feeling of the user is improved; in addition, the waterproof and airtight layer 313 has waterproof and airtight properties, so that the airtight space can be waterproof and airtight.

In the present embodiment, the first bag member 31 and the second bag member 32 are fixedly connected to each other by fixedly bonding the circumferential portion of the waterproof and air-impermeable layer 313 of the first bag member 31 and the circumferential portion of the waterproof and air-impermeable layer 313 of the second bag member 32, and the above-described sealed space is formed between the first bag member 31 and the second bag member 32. In a specific application, the periphery of the waterproof and air-impermeable layer 313 of the first bag body 31 and the periphery of the waterproof and air-impermeable layer 313 of the second bag body 32 can be fixedly combined together by using high frequency, ultrasonic, laser or glue pressing.

In this embodiment, airtight bag 30 includes first bag body 31 and second bag body 32, and first bag body 31 and second bag body 32 interconnect and enclose and close the airtight space that forms and be three-dimensional form, and this airtight space is three-dimensional form, and the inner space of airtight space is big, greatly increased airtight bag 30's compression storing space, can hold more article, can satisfy the user demand that people carried a large amount of article trips.

In this embodiment, the waterproof and air-impermeable layer 313 is made of a flexible material, so that when a piece of luggage is placed in the closed space, air in the closed space is exhausted, the first bag body 31 and the second bag body 32 are attached to the piece of luggage, thereby playing a role of compressing the piece of luggage, and the volume of the piece of luggage becomes smaller after being compressed, so that more pieces of luggage can be accommodated; in addition, the airtight bag 30 has waterproof and airtight properties, and can realize dry and wet separation and odor isolation of the luggage.

The airtight bag 30 of the embodiment of the present invention is further described, when in use, a user needs to put articles into the airtight space, close the sealing locking member 40, and then remove the air in the airtight space from the exhaust device 50 to achieve the purpose of vacuum compressing the articles; in a particular application, the user can seal and deflate the bag 30 after placing items such as comforters, pillows, clothing, etc.

In another embodiment of the present invention, the waterproof and air-impermeable layer 313 of the airtight bag 30 is provided to be compounded on the surface of the fabric layer 312, in a specific application, the waterproof and air-impermeable layer 313 can be attached to and pressed on the surface of the fabric layer 312, the fabric layer 312 and the waterproof and air-impermeable layer 313 are tightly connected into a whole, and the structural strength is good; in addition, the material of the waterproof and air-impermeable layer 313 can be melted to form liquid, and the liquid is poured onto the surface of the cloth layer 312 to be cured, so that the waterproof and air-impermeable layer 313 is formed on the surface of the cloth layer 312, the cloth layer 312 and the waterproof and air-impermeable layer 313 are tightly connected into a whole, and the structural strength of the cloth layer is better.

In another embodiment of the present invention, the waterproof and air-impermeable layer 313 of the air-tight bag 30 is provided with a peripheral edge connected to the peripheral edge of the cloth layer 312. In specific application, the periphery of the waterproof and air-impermeable layer 313 and the periphery of the cloth layer 312 can be pressed or attached together, so that the middle part of the cloth layer 312 is separated from the middle part of the waterproof and air-impermeable layer 313 in use, the cloth layer 312 is prevented from being stressed and deformed along with the waterproof and air-impermeable layer 313 in the process of compressing luggage, the service lives of the first bag body 31 and the second bag body 32 are prolonged, the waterproof and air-impermeable layer 313 and the cloth layer 312 are only connected at the periphery, and the manufacturing method is simpler.

In another embodiment of the present invention, the waterproof and air-impermeable layer 313 of the air-tight bag 30 is provided as a TPU layer. The waterproof and air-impermeable layer 313 is made of a TPU (Thermoplastic polyurethane elastomer) material, which is an environment-friendly and non-toxic material, so that when the air-tight bag 30 is applied to a trunk, a handbag or a backpack, the air-tight bag 30 is safe and effective and does not hurt a human body.

In another embodiment of the present invention, the waterproof and air-impermeable layer 313 of the air-tight bag 30 is provided as a PE layer. Specifically, the waterproof and air-impermeable layer 313 is made of a PE (polyethylene) material, and the air impermeability of the PE material is utilized to seal the enclosed space and ensure that the enclosed space is air-impermeable and waterproof.

In another embodiment of the present invention, the waterproof and air-impermeable layer 313 of the airtight bag 30 is provided as a PPC layer. Specifically, the waterproof and air-impermeable layer 313 is made of a PPC (Poly propylene carbonate: polymethyl ethylene carbonate) material, and the air impermeability of the PPC material is utilized to seal the enclosed space and ensure that the enclosed space is air-impermeable and waterproof.

In another embodiment of the present invention, the waterproof and air-impermeable layer 313 of the airtight bag 30 is provided as a PA layer; specifically, the waterproof and air-impermeable layer 313 is made of a PA (polyamide: polyamide resin) material, and the waterproof and air-impermeable performance of the PA material is utilized to seal the closed space and ensure that the closed space is air-impermeable and waterproof.

In another embodiment of the present invention, the waterproof and air-impermeable layer 313 of the airtight bag 30 is provided as a PU layer; specifically, the waterproof and air-impermeable layer 313 is made of a PU (Polyurethane) material, and the waterproof and air-impermeable performance of the PU material is utilized to seal the closed space and ensure that the closed space is air-impermeable and waterproof.

In another embodiment of the present invention, the waterproof and air-impermeable layer 313 of the airtight bag 30 is provided as an EVA layer; specifically, the waterproof and air-impermeable layer 313 is made of an EVA (ethylene-vinyl acetate copolymer) material, and the waterproof and air-impermeable performance of the EVA material is utilized to seal the closed space and ensure that the closed space is air-impermeable and waterproof.

In another embodiment of the present invention, the waterproof and air-impermeable layer 313 of the airtight bag 30 is provided as a PVC layer; specifically, the waterproof and air-impermeable layer 313 is made of Polyvinyl chloride (PVC) material, and the PVC material has waterproof and air-impermeable properties, so as to seal the enclosed space and ensure the air-impermeable and waterproof properties of the enclosed space.

In addition, in other embodiments, the waterproof and air-impermeable layer 313 may be replaced by other materials of the waterproof and air-impermeable layer 313.

In another embodiment of the present invention, as shown in fig. 1-2, the first bag body 31 of the airtight bag 30 is provided to include a first bottom portion and a first sidewall portion 311, the first sidewall portion 311 is connected to the periphery of the first bottom portion, and the first bottom portion and the first sidewall portion 311 are enclosed to form a first sealed half cavity 314; the second bag body 32 comprises a second bottom 321 and a second side wall 322, the second side wall 322 is connected with the periphery of the second bottom 321, and the second bottom 321 and the second side wall 322 enclose to form a second closed half cavity; the periphery of the first side wall 311 facing away from the first bottom is abutted against the periphery of the second side wall 322 facing away from the second bottom 321 so that the first closed half-cavity 314 and the second closed half-cavity form a closed space.

In a specific application, the first side wall 311 is surrounded around the first bottom and connected to the periphery of the first bottom, so that the inner wall surface of the first side wall 311 and the surface of the first bottom facing the first side wall 311 are surrounded to form a three-dimensional chamber structure, i.e., the first sealed half-cavity 314, and similarly, the second side wall 322 and the second bottom 321 are also surrounded to form a three-dimensional chamber structure, i.e., the second sealed half-cavity, and then the periphery of the first side wall 311 facing away from the first bottom and the periphery of the second side wall 322 facing away from the first bottom are connected together, so that the first sealed half-cavity 314 and the second sealed half-cavity are communicated to form a three-dimensional sealed space.

Furthermore, the edge of the first side wall 311 facing away from the first bottom and the edge of the second side wall 322 facing away from the second bottom 321 are combined in a one-to-one correspondence manner, and specifically, the first side wall and the second side wall can be fixedly combined together in a high frequency, ultrasonic, laser or glue pressing manner, so that the joint between the first bag body 31 and the second bag body 32 is good in air tightness, the luggage compression effect is better, the manufacture is simple, and the manufacture is convenient.

Furthermore, the first side wall 311 and the periphery of the first bottom may be fixed together by using high frequency, ultrasonic, laser or glue pressing, and the first side wall 311 may also be formed by bending and extending the periphery of the first bottom toward the second bottom 321, so that the first bottom and the first side wall 311 are integrally formed, and the structural strength is good; similarly, the second sidewall 322 and the second bottom 321 may be fixed and combined together by high frequency, ultrasonic, laser or glue pressing, and the second sidewall 322 may also be formed by bending and extending the periphery of the second bottom 321 towards the first bottom, so that the second sidewall 322 and the second bottom 321 are integrally formed, and the structure strength is good, and the strength of the whole airtight bag 30 is good.

In another embodiment of the present invention, as shown in fig. 1-2, when the airtight bag 30 is empty, the second bag body 32 is located in the first sealed half-cavity 314, the second sidewall portion 322 is attached to the inner peripheral wall of the first sidewall portion 311, and the second bottom portion 321 is attached to the first bottom portion, or the first bag body 31 is located in the second sealed half-cavity, the first sidewall portion 311 is attached to the inner peripheral wall of the second sidewall portion 322, and the first bottom portion is attached to the second bottom portion 321; when the airtight bag 30 is in a fully loaded state, the second bag body 32 is located outside the first airtight half-chamber 314, the first bottom portion and the second bottom portion 321 are oppositely arranged, and the first airtight half-chamber 314 and the second airtight half-chamber are oppositely communicated.

When the airtight bag 30 is in an unloaded state, that is, when there is no air or a small amount of air in the airtight space, that is, when the airtight bag 30 is not used, the first bag body 31 and the second bag body 32 are stacked, so that when the airtight bag 30 is installed in an accommodating space in a component such as a trunk, a handbag or a backpack, the first bag body 31 and the second bag body 32 occupy less accommodating space in the component such as the trunk, the handbag or the backpack, and the loading requirement of more articles can be met; when the airtight bag 30 is in a full-load state, namely after the airtight space is filled with luggage or air, namely the first bottom and the second bottom 321 are relatively pulled open, the first airtight half cavity 314 and the second airtight half cavity are completely bulged, at the moment, the first bag body 31 and the second bag body 32 enclose to form a three-dimensional airtight space, the internal space of the airtight space is large, the compressed storage space of the airtight bag 30 can be improved, and the accommodating requirements of more articles can be met.

Further, in a specific use, the shapes of the first bag body 31 and the second bag body 32 can be designed according to the storage space in the bag, so that when the airtight bag 30 is not used, the first bag body 31 and the second bag body 32 can be completely attached to the inner wall of the storage space, and thus when the airtight bag 30 is applied to a component such as a luggage, a handbag or a backpack, the existing component structure such as the luggage, the handbag or the backpack does not need to be changed, the manufacturing cost is reduced, and the application range is wider.

In this embodiment, as shown in fig. 1-2, the first sidewall portion 311 includes at least two first sidewall portions 3111 connected end to end in sequence, and the side portions of two adjacent first sidewall portions 3111 are fixedly joined together; the second side wall portion 322 includes at least two second side wall sections 3221 connected end to end, and the edges of two adjacent second side wall sections 3221 are fixedly joined together.

In a specific application, a plurality of first sidewall sections 3111 are connected end to form a closed loop structure, and a first bottom covers a bottom opening of the closed loop structure, so as to form a first closed half cavity 314 of a three-dimensional body; in addition, the edges of two adjacent first side wall sections 3111 are fixedly combined together, the connection mode is simple, the air tightness of the connection part is good, and the first bag body 31 is guaranteed to have good air tightness; similarly, the plurality of second sidewall segments 3221 and the second bottom 321 also enclose a second closed half cavity of the three-dimensional body; in addition, the edges of the two adjacent second side wall sections 3221 are fixedly joined together, the connection is simple, and the air tightness of the joint is good, so that the second bag body 32 is ensured to have good air tightness, and the airtight bag 30 is ensured to have good compression performance. In addition, the edges of two adjacent first side wall sections 3111 may be fixedly joined together by high frequency, ultrasonic, laser or molding compound, and the edges of two adjacent second side wall sections 3221 may be fixedly joined together by high frequency.

Further, the number of the first side wall sections 3111 may be three, four, or four or more, and the specific number may be set according to the shape of the accommodating space; the number of the second side wall sections 3221 may be three, four or more, and the specific number may be set according to the shape of the accommodating space.

In one embodiment, the edges of the edge portions of the first side wall section 3111 and the edge portions of the second side wall section 3221 are reserved with edge portions 3222 with a width of 1mm to 3mm, that is, after two adjacent first side wall sections 3111 are connected and two adjacent second side wall sections 3221 are connected, the edges of the first side wall section 3111 and the second side wall section 3221 further have edge portions 3222 with a width of 1mm to 3mm, and the presence of the edge portions 3222 can enhance the connection strength between two adjacent first side wall sections 3111 and two adjacent second side wall sections 3221. In particular applications, the edge portions 3222 of the first and

second sidewall sections

3111, 3221 are reserved with edge portions 3222 having a width of 1mm, 1.5mm, 2mm, 2.5mm, 3mm, or the like. In other embodiments, the size of the reserved edge portion 3222 may be other sizes selected according to actual needs.

In another embodiment of the present invention, as shown in fig. 1-2, a first sidewall section 3111 of the airtight bag 30 is formed by bending from the edge of the first bottom toward the second bottom 321; the second sidewall section 3221 is formed by bending from the edge of the second bottom 321 towards the first bottom. The first sidewall section 3111 is formed by bending from the edge of the first bottom toward the second bottom 321, and the first sidewall section 3111 and the first bottom are integrally formed, so that the manufacturing method is simple, and the structural strength of the first bag body 31 is good; the second side wall section 3221 is formed by bending from the edge of the second bottom 321 toward the first bottom, and the second side wall section 3221 and the second bottom 321 are integrally formed, so that the manufacturing method is simple, and the structural strength of the second bag body 32 is good.

Furthermore, the edge of the first sidewall segment 3111 facing away from the first bottom and the edge of the second sidewall segment 3221 facing away from the second bottom 321 are combined in a one-to-one correspondence manner, and specifically, the first and second sidewalls can be fixed and combined together in a high frequency, ultrasonic, laser or glue pressing manner, so that the joint between the first bag body 31 and the second bag body 32 has good air tightness, a better article compression effect, and the bag is easy to manufacture and convenient to manufacture.

In another embodiment of the present invention, a connection portion 3223 for connecting with a bag and having a width of 5mm to 30mm is reserved at the circumferential edge of the first bag body 31 and/or the circumferential edge of the second bag body 32 of the airtight bag 30. The connection portion 3223 may be disposed at a circumferential edge of the first bag body 31, the connection portion 3223 may be disposed at a circumferential edge of the second bag body 32, and the connection portion 3223 may be disposed at both the circumferential edge of the first bag body 31 and the circumferential edge of the second bag body 32. In a specific application, referring to fig. 1 and 2, a connecting portion 3223 with a width of 5mm to 30mm is reserved on the edge of the first sidewall section 3111 of the first bag body 31 facing away from the first bottom or the edge of the second sidewall section 3221 of the second bag body 32 facing away from the second bottom 321. More specifically, the first sidewall section 3111 and the second sidewall section 3221 are reserved with a connection portion 3223 having a width of 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, or the like. In other embodiments, the size of the reserved connecting portion 3223 may be other sizes selected according to actual needs.

Further, the connection portion 3223 is sewn to an opening of a housing space of a component such as a trunk, a bag, or a backpack.

Of course, in other embodiments, the connecting portion 3223 may also be movably connected to the opening of the first half accommodating cavity or the opening of the second half accommodating cavity 21, so that when the airtight bag 30 is not needed, the airtight bag 30 is taken out, the space occupied by the accommodating space is prevented from being compressed, and the storage requirement of more articles can be met; in addition, the airtight bag 30 can be used for other purposes such as a water storage bag, an independent storage bag and the like after being taken out independently; when a component such as a luggage, a bag, or a backpack has a damaged accessory, the airtight bag 30 can be removed and the damaged accessory can be replaced. In a specific application, the connection portion 3223 may be mounted at an opening of the accommodating space of the component such as a trunk, a handbag, or a backpack through a hook and loop fastener, a self-sealing strip, a zipper, or a latch.

In another embodiment of the present invention, referring to fig. 1 and 2, the sealing stopper 40 of the airtight bag 30 is provided as an airtight zipper. In the embodiment, the airtight zipper can be waterproof and airtight, when the airtight bag 30 in the luggage case is used, the airtight zipper is only needed to be pulled, the complete sealing of the airtight space can be realized, the sealing is not needed by means of an external tool, and the operation is simple. In a particular application, the structure of the airtight zipper may be similar to that of the watertight zipper.

In another embodiment of the present invention, referring to fig. 1 and 2, the sealing and locking member 40 of the airtight bag 30 is a watertight zipper, in this embodiment, the watertight zipper is waterproof and airtight, and when the airtight bag 30 in the luggage case is used, the airtight bag can be completely sealed without using an external tool, and the operation is simple. In a particular application, the structure of the watertight zipper may be similar to that of the airtight zipper.

In other embodiments, the sealing lock 40 may be another lock capable of being a waterproof and air impermeable layer 313.

In another embodiment of the present invention, referring to fig. 1 and 2, an exhaust device 50 for exhausting gas in the sealed space is provided on the first bag body 31 and/or the second bag body 32 of the airtight bag 30. In this embodiment, the air exhausting device 50 may be disposed on the first bag body 31, or may be disposed on the second bag body 32, or both the first bag body 31 and the second bag body 32 are provided with a check valve; after the article is placed in the sealed space in the airtight bag 30 and the sealing stopper 40 is closed, the first bag member 31 and the second bag member 32 are pressed to discharge the gas in the sealed space from the gas discharge unit 50, thereby performing the compression function of the airtight bag 30.

In another embodiment of the present invention, the exhaust device 50 of the airtight bag 30 provided can be a check valve, which only allows the gas in the airtight space to escape, and blocks the outside air from entering the airtight space, so as to avoid the inflation failure of the airtight bag 30, and ensure the airtight bag 30 to have a good compression effect. The one-way valve is used for exhausting by manually pressing the airtight bag 30 and also can be used for exhausting by the air pump, and the specific exhausting mode can be selected by a user according to the requirement of the user, and is not limited herein.

In another embodiment of the present invention, the exhaust device 50 of the bag comprises an air outlet port and a cover, the air outlet port communicated with the enclosed space is disposed on the first bag body 31 and/or the second bag body 32, and the cover is movably connected to the air outlet port and used for opening or closing the air outlet port. The air outlet port can be arranged on the first bag body 31 or the second bag body 32, or the air outlet ports are arranged on the first bag body 31 and the second bag body 32; when the cover is taken down from the air outlet interface, the air in the sealed space is conveniently discharged from the air outlet hole; when the air outlet port is blocked by the cover, the sealed space is sealed, so that external air is prevented from entering the sealed space, and the airtight bag 30 is prevented from being inflated.

More specifically, the cover is inserted into the air outlet interface in an interference manner, so that the sealing of the closed space is realized, or the cover can be screwed on the air outlet interface, so that the sealing of the closed space is realized.

Of course, in other embodiments, the air exhaust device 50 may be other devices capable of preventing air from entering the enclosed space.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An airtight bag, is used for setting up in the case and bag, its characterized in that: the airtight bag comprises a first bag body and a second bag body, the first bag body and the second bag body are connected with each other and can enclose a closed space forming a three-dimensional space, an opening used for being communicated with the closed space is formed in the first bag body and/or the second bag body, a sealing locking piece used for opening or closing the closed space is arranged in the opening, and an exhaust device used for exhausting gas in the closed space is arranged on the first bag body and/or the second bag body;

the first bag body and the second bag body both comprise a cloth layer and a waterproof and air-impermeable layer which are connected with each other and are arranged in a laminated manner, the waterproof and air-impermeable layer of the first bag body and the waterproof and air-impermeable layer of the second bag body are arranged oppositely, and the circumferential part of the waterproof and air-impermeable layer of the first bag body and the circumferential part of the waterproof and air-impermeable layer of the second bag body are fixedly combined together to form the closed space in a surrounding manner.

2. The airtight bag according to claim 1, wherein: the waterproof and air-impermeable layer is compounded on the surface of the fabric layer, or the periphery of the waterproof and air-impermeable layer is connected with the periphery of the fabric layer.

3. The airtight bag according to claim 1, wherein: the waterproof and air-proof layer is a TPU layer, a PE layer, a PPC layer, a PA layer, a PU layer, an EVA layer or a PVC layer.

4. The airtight bag according to any one of claims 1 to 3 wherein: the first bag body comprises a first bottom and a first side wall, the first side wall is connected with the periphery of the first bottom, and a first closed half cavity is formed by the first bottom and the first side wall in a surrounding mode;

the second bag body comprises a second bottom and a second side wall, the second side wall is connected with the periphery of the second bottom, and a second closed half cavity is formed by the second bottom and the second side wall in a surrounding mode;

the periphery of the first side wall part facing away from the first bottom part is butted with the periphery of the second side wall part facing away from the second bottom part, so that the first closed half cavity and the second closed half cavity form the closed space.

5. The airtight bag according to claim 4, wherein: when the airtight bag is unloaded, the second bag body is positioned in the first closed half cavity, the second side wall part is attached to the inner peripheral wall of the first side wall part, and the second bottom part is attached to the first bottom part;

or the first bag body is positioned in the second closed half cavity, the first side wall part is attached to the inner peripheral wall of the second side wall part, and the first bottom part is attached to the second bottom part;

6. The airtight bag according to claim 4, wherein: the first side wall part comprises at least two first side wall sections which are connected end to end in sequence, and the edges of the two adjacent first side wall sections are fixedly combined together;

the second side wall part comprises at least two second side wall parts which are connected end to end in sequence, and the edge parts of the two adjacent second side wall parts are fixedly combined together.

7. The airtight bag according to claim 6, wherein: the first side wall section is formed by bending from the edge of the first bottom towards the second bottom; the second sidewall section is formed by bending from an edge of the second bottom toward the first bottom.

8. The airtight bag according to any one of claims 1 to 3 wherein: the connecting part which is used for being connected with the luggage and has the width of 5 mm-30 mm is reserved at the circumferential edge of the first bag body and/or the circumferential edge of the second bag body.

9. The airtight bag according to any one of claims 1 to 3 wherein: the exhaust device is a one-way valve.

10. The airtight bag according to any one of claims 1 to 3 wherein: the air exhaust device comprises an air outlet interface and a cover, the air outlet interface communicated with the closed space is arranged on the first bag body and/or the second bag body, and the cover is movably connected to the air outlet interface and used for opening or closing the air outlet interface.