CN212521072U - Shoulder bag - Google Patents

Abstract

The utility model belongs to the technical field of living goods, in particular to a backpack, which comprises a compression bag, a backpack body and at least one shoulder strap, wherein both ends of the shoulder strap are fixedly connected to the backpack body, an accommodating space for accommodating luggage is arranged in the backpack body, and the compression bag is arranged in the accommodating space; the compression bag includes the first bag body and the second bag body, the first bag body with the second bag body interconnect can enclose and establish and form airtight space, airtight space is three-dimensional form, the first bag body and/or be provided with on the second bag body be used for with the opening of airtight space intercommunication, the opening part is provided with and is used for opening and closing airtight space's sealed locking piece. The airtight space of the compression bag in the backpack is three-dimensional, the inner space of the airtight space is large, the compression storage space of the compression bag is greatly increased, more luggage can be contained, and the use requirement that people carry a large amount of luggage for traveling can be met.

Description

Shoulder bag

Technical Field

The utility model belongs to the technical field of articles for daily use, especially, relate to a knapsack.

Background

Along with the improvement of living standard of people, the people are increasingly becoming an important part in life and work of people when going out to travel and going on business, wherein the backpack is also an important tool for loading luggage; people go out the luggage that needs to carry and also more and more, and current knapsack volume does not satisfy the loading demand at all, and people propose to set up the compression bag in the knapsack in order to solve above-mentioned problem, but the compression storing space of current compression bag is little, can't satisfy the user demand that people carried a large amount of luggage at all.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a knapsack aims at solving the little technical problem in compression bag compression storing space in the knapsack among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: a backpack comprises a compression bag, a backpack body and at least one shoulder strap, wherein two ends of the shoulder strap are fixedly connected to the backpack body, an accommodating space for accommodating luggage is arranged in the backpack body, and the compression bag is arranged in the accommodating space; the compression bag includes the first bag body and the second bag body, the first bag body with the second bag body interconnect to can enclose and establish and form airtight space, airtight space is three-dimensional form, the first bag body and/or be provided with on the second bag body be used for with the opening of airtight space intercommunication, the opening part is provided with and is used for opening and closing airtight space's sealed locking piece.

Optionally, the outline shape of the first bag body and the outline shape of the second bag body are both matched with the outline shape of the accommodating space.

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 compression bag is in an unloaded state, the second bag body is located in the first closed space, the second side wall portion is attached to an inner wall surface of the first side wall portion, the second bottom portion is attached to the first bottom portion, the first side wall portion is attached to an inner peripheral wall of the accommodating space, and the first bottom portion is attached to a bottom surface of the accommodating space; or the first bag body is positioned in the second closed space, the first side wall part is attached to the inner wall surface of the second side wall part, the first bottom part is attached to the second bottom part, the second side wall part is attached to the inner peripheral wall of the accommodating space, and the second bottom part is attached to the bottom surface of the accommodating space;

when the compression bag is in a full-load state, the second bag body is positioned outside the first closed half cavity, the first side wall part is attached to the inner peripheral wall of the accommodating space, the first bottom part is attached to the bottom surface of the accommodating space, and the second side wall part is attached to the inner peripheral wall of the accommodating space or extends out of the accommodating space;

or the first bag body is positioned outside the second closed semi-cavity, the second side wall part is attached to the inner peripheral wall of the accommodating space, and the second bottom part is attached to the bottom surface of the accommodating space; the first side wall part is attached to the inner peripheral wall of the accommodating space or extends out of the accommodating space.

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, a connecting portion, which is used for being connected with the bag body and has a 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, and the connecting portion is sewn or movably connected in the bag body.

Optionally, the sealing lock is a self-sealing strip, an airtight zipper, or a watertight zipper.

Optionally, the first bag body and the first bag body both include a fabric layer and a waterproof and air-impermeable layer that are connected to each other and stacked, 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 a circumferential portion of the waterproof and air-impermeable layer of the first bag body and a circumferential portion of the waterproof and air-impermeable layer of the second bag body are fixedly combined together and enclose to form the enclosed space.

Optionally, an exhaust device for exhausting gas in the sealed space is arranged on the first bag body and/or the second bag body.

Optionally, the bag body is provided with a zipper for opening or closing the accommodating space.

The utility model provides an above-mentioned one or more technical scheme in the knapsack have one of following technological effect at least: be provided with the compression bag in the accommodating space in this knapsack, the compression bag includes the first bag body and the second bag body, and the first bag body and the second bag body interconnect enclose to close and form the airtight space that is three-dimensional form, and this airtight space is three-dimensional form, and the inner space in airtight space is big, greatly increased the compression storing space of compression bag, can hold more luggage, can satisfy the user demand that people carried a large amount of luggage trips.

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 a compression bag in a backpack according to an embodiment of the present invention in a fully loaded state.

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

Fig. 3 is a schematic structural view of a compression bag in a backpack according to another embodiment of the present invention.

Figure 4 is a schematic view of the compression bag of the backpack shown in figure 3 in an unloaded state.

Fig. 5 is a schematic view of the compression pocket of fig. 1 in a fully loaded state.

Fig. 6 is a schematic view of the compression bag of fig. 2 in an unloaded state.

Fig. 7 is a sectional view taken along line a-a in fig. 5.

Wherein, in the figures, the respective reference numerals:

10-bag body 11-zipper 20-shoulder strap

30-compressed bag 31-first bag body 32-second bag body

40-sealing lock 50-vent 60-pocket

311-first side wall part 312-cloth layer 313-waterproof and air-impermeable layer

314-first closed half-chamber 321-second bottom 322-second side wall part

3111 first sidewall section 3221 second sidewall section 3222 edge portion

3223-connecting part.

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 to 7 are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present 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 7, in an embodiment of the present invention, a backpack is provided, which includes a compression bag 30, a backpack body 10 and at least one shoulder strap 20, both ends of the shoulder strap 20 are fixedly connected to the backpack body 10, an accommodating space for accommodating luggage is provided in the backpack body 10, and the compression bag 30 is provided in the accommodating space; the compression bag 30 comprises a first bag body 31 and a second bag body 32, the first bag body 31 and the second bag body 32 are connected with each other, and a closed space can be formed in a surrounding mode, the closed space is three-dimensional, 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, a sealing locking piece 40 used for opening and closing the closed space is arranged at the opening, wherein the opening of the compression bag 30 is opened or closed through the sealing locking piece 40, and luggage needing to be placed into the closed space can be conveniently placed into or taken out of the compression bag.

Specifically, compared with the prior art, the utility model discloses be provided with compression bag 30 in the accommodating space in the knapsack, compression bag 30 includes first bag body 31 and second bag body 32, first bag body 31 and second bag body 32 interconnect enclose and close the airtight space that forms and be three-dimensional form, this airtight space is three-dimensional form, the inner space in airtight space is big, greatly increased compression bag 30's compression storing space, can hold more luggage, can satisfy the user demand that people carried a large amount of luggage trips.

In this embodiment, an opening communicating with the sealed space may be formed only in the first bag body 31, an opening communicating with the sealed space may be formed only in the second bag body 32, or openings communicating with the sealed space may be formed in both the first bag body 31 and the second bag body 32, where the opening may extend in the length direction of the first bag body 31 or in the length direction of the second bag body 32, and the opening may extend in the width direction of the first bag body 31 or in the width direction of the second bag body 32 and is located at the middle position between the first bag body 31 and the second bag body 32, so as to facilitate loading or unloading of luggage into or from the sealed space; the specific opening position and direction of the opening can be determined according to the actual use condition, and are not limited herein.

In this embodiment, the first bag body 31 and the second bag body 32 are both flexible bag bodies, so that when a piece of luggage is placed in the closed space, air in the closed space is exhausted, the flexible bag bodies can also be 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 compression bag 30 has waterproof and airtight properties, and can realize dry and wet separation and odor isolation of the luggage.

Further, one, two or more compression pockets 30 may be provided in each of the receiving spaces.

In this embodiment, the upper end of the shoulder strap 20 is intercepted by the upper part of the bag body 10, the lower end of the shoulder strap 20 is connected with the lower part of the bag body 10, a closed loop structure is formed by enclosing the shoulder strap 20 and the bag body, so that the hands of a user can be conveniently hung on the shoulders of the user after passing through the closed loop structure, the use of the backpack is facilitated, the number of the shoulder straps 20 can be two, and the two shoulder straps 20 are respectively hung on the two shoulders of the user, so that the use of the backpack is more labor-saving.

In another embodiment of the present invention, referring to fig. 1 and 2, the first bag body 31 and the second bag body 32 of the backpack are provided with a contour shape matching the contour shape of the accommodating space. The outline shape of the first bag body 31 and the outline shape of the second bag body 32 are both the same as the outline shape of the accommodating space, so that when the compression bag 30 is not used, the first bag body 31 and the second bag body 32 are overlapped and arranged in the accommodating space, and the first bag body 31 and the second bag body 32 can be completely attached to the inner wall of the accommodating space, so that the space of the accommodating space is not occupied; when the compression bag 30 is used, the first bag body 31 is attached to the inner wall of the accommodating space, the sealed space formed after the accommodating space of the second bag body 32 is pulled out from the accommodating space is larger, the compression space of the accommodating space of the compression bag 30 is larger, and the number of pieces of luggage which can be accommodated is larger; meanwhile, since the shape and the contour of the first bag body 31, and the shape and the contour of the accommodating space are the same, the structure of the first bag body 31 can be designed according to the shape of the existing backpack, so that the shape of the existing backpack does not need to be changed, the manufacturing cost is reduced, and the application range is wider.

In another embodiment of the present invention, referring to fig. 5 and 6, the first bag body 31 of the backpack is provided, which includes 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 enclose to form a first closed 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.

Further, first lateral wall portion 311 and second lateral wall portion 322 can adopt modes such as high frequency, ultrasonic wave, radium-shine or moulding to glue fixed combination together, and the gas tightness of junction is good between first bag body 31 and the second bag body 32, and the effect of compression luggage is better, simple manufacture, convenient manufacturing.

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 toward the first bottom, so that the second sidewall 322 and the second bottom 321 are integrally formed, and the compression bag has good structural strength and good strength.

In another embodiment of the present invention, referring to fig. 1 and 2, when the compression bag 30 of the backpack is in an unloaded state, the second bag body 32 is located in the first closed space, the second sidewall 322 is attached to the inner wall surface of the first sidewall 311, the second bottom 321 is attached to the first bottom, the first sidewall 311 is attached to the inner peripheral wall of the accommodating space, and the first bottom is attached to the bottom surface of the accommodating space; when the compression bag 30 is in a fully loaded state, the second bag body 32 is located outside the first sealed half-cavity 314, the first sidewall 311 is attached to the inner peripheral wall of the accommodating space, the first bottom is attached to the cavity bottom surface of the accommodating space, and the second sidewall 322 is attached to the inner peripheral wall of the accommodating space or extends out of the accommodating space.

Specifically, when the compression bag 30 is in an unloaded state, that is, when there is no air or a small amount of air in the closed space, that is, when the compression bag 30 is not in use, the second bag body 32 is located in the first closed half cavity 314, the second side wall portion 322 is attached to the inner wall of the first side wall portion 311, the second bottom portion 321 is attached to the first bottom portion, that is, the first bag body 31 and the second bag body 32 are stacked, the first bag body 31 and the second bag body 32 are both located in the accommodating space, the first side wall portion 311 is attached to the inner peripheral wall of the accommodating space, and the first bottom portion is attached to the bottom surface of the accommodating space, that is, the first bag body 31 and the second bag body 32 can be completely attached to the inner wall of the accommodating space, so that the space of the accommodating space is not occupied; when the compression bag 30 is in a full-load state, that is, after the closed space is filled with luggage or air, the second bottom 321 of the second bag body 32 is moved out of the first closed half-cavity 314 and is unfolded, the second bag body 32 is located outside the first closed half-cavity 314, the first bag body 31 is attached to the inner wall of the accommodating space, and the second sidewall 322 of the second bag body 32 is partially attached to the inner peripheral wall of the accommodating space, or is completely attached to the inner peripheral wall of the accommodating space, or is not attached to the inner peripheral wall of the accommodating space, but is directly located outside the accommodating space; after the first bag body 31 and the second bag body 32 are completely unfolded, the first bag body 31 is attached to the inner peripheral wall of the accommodating space, at the moment, the accommodating space can be utilized to the maximum extent by the compression bag 30, the internal space of the closed space is greatly increased, and the compression storage space of the compression bag 30 is greatly increased so as to accommodate more luggage.

In another embodiment of the present invention, when the compression bag 30 of the backpack is in the unloaded state, the first bag body 31 is located in the second closed space, the first sidewall 311 is attached to the inner wall surface of the second sidewall 322, the first bottom is attached to the second bottom 321, the second sidewall 322 is attached to the inner peripheral wall of the accommodating space, and the second bottom 321 is attached to the bottom surface of the accommodating space; when the compression bag 30 is in a full-load state, the first bag body 31 is positioned outside the second closed half cavity, the second side wall portion 322 is attached to the inner peripheral wall of the accommodating space, and the second bottom portion 321 is attached to the bottom surface of the accommodating space; the first sidewall 311 is attached to an inner peripheral wall of the receiving space or extends out of the receiving space.

Specifically, when the compression bag 30 is in an unloaded state, that is, when there is no air or a small amount of air in the closed space, that is, when the compression bag 30 is not in use, the first bag body 31 is located in the second closed half cavity, the first side wall portion 311 is attached to the inner wall of the second side wall portion 322, the first bottom portion is attached to the second bottom portion 321, that is, the first bag body 31 and the second bag body 32 are stacked, the first bag body 31 and the second bag body 32 are both located in the accommodating space, the second side wall portion 322 is attached to the inner peripheral wall of the accommodating space, and the second bottom portion 321 is attached to the bottom surface of the accommodating space, that is, the first bag body 31 and the second bag body 32 can be completely attached to the inner wall of the accommodating space, so that the space of the accommodating space is not occupied; in addition, when the compression bag 30 is in a full-load state, that is, after the closed space is filled with luggage or air, the first bottom of the first bag body 31 is moved out of the second closed half cavity and expanded, the first bag body 31 is located outside the second closed half cavity, the second bag body 32 is attached to the inner wall of the accommodating space, and the first sidewall 311 of the first bag body 31 may be partially attached to the inner peripheral wall of the accommodating space, may be completely attached to the inner peripheral wall of the accommodating space, may not be attached to the inner peripheral wall of the accommodating space, and is directly located outside the accommodating space; after the first bag body 31 and the second bag body 32 are completely unfolded, the second bag body 32 is attached to the inner peripheral wall of the accommodating space, the accommodating space can be utilized to the maximum extent by the compression bag 30 at the moment, the inner space of the closed space is greatly increased, and the compression storage space of the compression bag 30 is greatly increased so as to accommodate more luggage.

In another embodiment of the present invention, referring to fig. 1 and 2, the height of the first sidewall 311 and the height of the second sidewall 322 of the backpack are both equal to the depth of the accommodating space.

Specifically, when the compression 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 accommodating space, so that the whole compression bag 30 can be directly used as a lining in the accommodating space, and the structural design is more ingenious and reasonable; moreover, when the compression bag 30 is used, after the first bottom of the second bag body 32 is pulled out and unfolded from the first sealed half cavity 314, or after the second bottom 321 of the first bag body 31 is pulled out and unfolded from the second sealed half cavity, the same volume of the first sealed half cavity 314 and the same volume of the second sealed half cavity are the same as the volume of the accommodating space, and the volume of the closed space is twice of the volume of the accommodating space, so that the internal space of the closed space is larger, and the compression storage space of the compression bag 30 is greatly increased to accommodate more luggage.

In this embodiment, referring to fig. 3 and 4, the first sidewall portion 311 includes at least two first sidewall portions 3111 connected end to end, and the edge 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.

Specifically, 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 compression 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.

In a specific application, the bag body 10 is provided with a zipper 11 for opening or closing the accommodating space. The opening and closing of the accommodating space are realized through the opening and closing of the zipper 11, so that the luggage can be conveniently taken out and put in; referring to fig. 1 and 2, the number of the first sidewall sections 3111 is four, the number of the second sidewall sections 3221 is four, the zipper 11 is U-shaped and is disposed at the top of the bag body 10, and thus one side of the top of the zipper 11 is bent and extends to the opposite side, so that the top of the bag body 10 can be completely opened and closed, when the compression bag 30 is not used, referring to fig. 2, the four first sidewall sections 3111 are respectively attached to the inner side wall of the accommodating space, and the first bottom is attached to the bottom surface of the accommodating space, so that the attaching effect of the first bag body 31 and the second bag body 32 is better, and the space in the accommodating space is not occupied at all; referring to fig. 1, when the compression bag 30 needs to be used, the second bag body 32 is pulled out of the accommodating space, the second bottom 321 of the second bag body 32 is pulled out of the accommodating space from the opened zipper 11, and thus the four second side wall sections 3221 of the second bag body 32 are all located outside the accommodating space, which can greatly increase the compression space of the compression bag 30 and improve the loading capacity of the backpack.

Further, as shown in fig. 3 and 4, the zipper 11 is U-shaped such that the bottom of one side of the bag body 10 is extended to the bottom of the opposite side, so that the receiving space can be completely opened; referring to fig. 4, when the compression bag 30 is not used, the four first sidewall sections 3111 are respectively attached to the inner sidewalls of the accommodating space, and the first bottom is attached to the bottom surface of the accommodating space, so that the first bag body 31 and the second bag body 32 are attached better, and do not occupy the space in the accommodating space at all; referring to fig. 3, when the compression bag 30 is needed, the second bottom 321 of the second bag body 32 is pulled out of the accommodating space by the opened zipper 11, so that the four second side wall sections 3221 of the second bag body 32 are all located outside the accommodating space, which can greatly increase the compression space of the compression bag 30 and increase the loading capacity of the backpack. Meanwhile, the second bag body 32 and thus the opening part of the zipper 11 can be completely pulled out and extended, and the luggage can be conveniently taken out or put into the compression bag 30.

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, referring to fig. 5 and 6, an edge portion 3222 with a width of 1mm to 3mm is reserved at an edge of an edge portion of the first side wall section 3111 and an edge portion of the second side wall section 3221, that is, after two adjacent first side wall sections 3111 are connected and two adjacent second side wall sections 3221 are connected, the edge of the first side wall section 3111 and the second side wall section 3221 further has an edge portion 3222 with a width of 1mm to 3mm, and the presence of the edge portion 3222 can enhance the connection strength between two adjacent first side wall sections 3111 and between 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, referring to fig. 5 and 6, a first sidewall section 3111 of the backpack is provided bent from the edge of the first bottom portion toward the second bottom portion 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 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.

In another embodiment of the present invention, referring to fig. 5 and 6, a connecting portion 3223 for connecting with the bag body 10 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 backpack. The connection portion 3223 may be disposed at a circumferential edge of the first bag body 31, the connection portion 3223 may also 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. 3 and 4, a connecting portion 3223 with a width of 5mm to 30mm is reserved on an edge of the first side wall section 3111 of the first bag body 31 facing away from the first bottom or an edge of the second side wall section 3221 of the second bag body 32 facing away from the second bottom 321 of the backpack. 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.

In another embodiment of the present invention, a connecting portion 3223 of the backpack is provided to be sewn into the bag body 10. The compression bag 30 is installed by sewing, the connection is firm and reliable, and the service life of the backpack is long. In a specific application, the connecting portion 3223 is sewn to the top opening of the accommodating hole.

In another embodiment of the present invention, a connecting portion 3223 of the backpack is movably connected to the bag body 10. Therefore, when the compressed bag 30 is not needed, the compressed bag 30 is taken out, so that the space occupied by compression is avoided, and the storage requirement of more luggage can be met; in addition, the compressed 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; also, when the bag body 10 has a damaged fitting, the compression bag can be removed and the damaged fitting replaced. In a specific application, the connecting portion 3223 may also be movably connected to the opening at the top of the accommodating hole, and the connecting portion 3223 may be installed at the opening of the first accommodating half-cavity or the opening of the second accommodating half-cavity 21 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. 7, the first bag body 31 and the second bag body 32 of the backpack are provided, which both include a fabric 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 the circumferential portion of the waterproof and air-impermeable layer 313 of the first bag body 31 and the circumferential portion of the waterproof and air-impermeable layer 313 of the second bag body 32 are fixedly combined together and form an enclosed space. The first bag body 31 and the second bag body 32 are fixedly connected by fixedly combining the circumferential parts of 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, and the above-mentioned sealed space is formed between the first bag body 31 and the second bag body 32; the first bag body 31 and the second bag body 32 are formed by combining the cloth layer 312 and the waterproof and air-impermeable layer 313, and the waterproof and air-impermeable layer 313 has waterproof and air-impermeable performances, so that waterproof and air-impermeable performances in a closed space are realized; in addition, the cloth layer 312 is located the surface of compression bag 30, and the user contacts soft cloth layer 312 from the outside like this, does not influence user's use and feels, is convenient for promote user experience.

Further, the waterproof and air-impermeable layer 313 is compounded on the surface of the cloth layer 312, in a specific application, the waterproof and air-impermeable layer 313 can be attached to and pressed 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 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.

Further, the periphery of the waterproof and air-impermeable layer 313 is joined to the periphery 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 other embodiments, the waterproof and air-impermeable layer 313 of the first bag body 31 may be disposed opposite to the fabric layer 312 of the second bag body 32, or the fabric layer 312 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, or 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, at this time, the circumferential portions of the first bag body 31 and the second bag body 32 are sewn together, and then a waterproof and air-impermeable layer 313 is bonded to the outer surface of the sewn portion to achieve the sealing connection. 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.

Further, the waterproof and air-impermeable layer 313 is a TPU layer, the waterproof and air-impermeable layer 313 is made of a TPU (Thermoplastic polyurethane elastomer) material, and the TPU material is an environment-friendly and non-toxic material, so that when the compression bag 30 is applied to a luggage case, a handbag or a backpack, the compression bag 30 is safe and effective and does not hurt a human body, and in addition, the waterproof and air-impermeable performance of the TPU material is utilized, so that a closed space is sealed, and the airtight and waterproof performance of the closed space is ensured.

Further, the waterproof and air-impermeable layer 313 is a PE layer, and specifically, the waterproof and air-impermeable layer 313 is made of a PE (polyethylene) material, and the waterproof and air-impermeable performance of the PE material is utilized to seal the closed space, thereby ensuring that the closed space is air-impermeable and waterproof.

Further, the waterproof and air-impermeable layer 313 is a PPC layer, and specifically, the waterproof and air-impermeable layer 313 is made of a PPC (Poly propylene carbonate: polymethyl ethylene carbonate) material, and the waterproof and air-impermeable performance of the PPC material is utilized to seal the sealed space and ensure that the sealed space is air-impermeable and waterproof.

Further, the waterproof and air-impermeable layer 313 is 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.

Further, the waterproof and air-impermeable layer 313 is 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.

Further, the waterproof and air-impermeable layer 313 is 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.

Further, the waterproof and air-impermeable layer 313 is 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, the sealing lock 40 of the backpack is provided as a self-sealing strip. Specifically, the self-sealing strip comprises two connecting strips, the connecting strips are respectively arranged on two opposite side surfaces of the opening, a concave buckle is arranged on one connecting strip, a convex buckle is arranged on the other connecting strip, the opening and the closing of the closed space are realized through the matching connection and the separation of the concave buckle and the convex buckle, the operation is simple, and the usability is good.

In another embodiment of the present invention, referring to fig. 1 and 2, the sealing lock 40 of the backpack is provided as an airtight zipper. In the embodiment, the airtight zipper can be waterproof and airtight, when the compression bag 30 in the backpack is used, the airtight zipper is only needed to be pulled, the complete sealing of the closed 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 lock 40 of the backpack is a watertight zipper, in this embodiment, the watertight zipper is waterproof and airtight, and when the compression bag 30 in the backpack is used, the watertight zipper is only pulled, so that the airtight space can be completely sealed without sealing with the help of an external tool, which is simple to operate. In a particular application, the structure of the watertight zipper may be similar to that of the airtight zipper.

In other embodiments, the seal lock 40 may be other locks that are waterproof and airtight.

In another embodiment of the present invention, referring to fig. 1 and 2, an exhaust device 50 for exhausting air in the enclosed space is provided on the first bag body 31 and/or the second bag body 32 of the backpack. In this embodiment, the air exhausting device 50 may be disposed on the first bag body 31, or disposed on the second bag body 32, or both the first bag body 31 and the second bag body 32 are disposed with the air exhausting device 50; after the luggage is placed in the sealed space of the compression bag 30 and the sealing lock 40 is closed, the first bag body 31 and the second bag body 32 are pressed, so that the gas in the sealed space is exhausted from the exhaust device 50, and the compression function of the compression bag 30 is realized.

In another embodiment of the present invention, the exhaust device 50 of the suitcase is 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 compression bag 30, and ensure the good compression effect of the compression bag 30. The check valve can be used for exhausting by manually pressing the compression bag 30 or by an air pump, and the specific air exhausting mode can be selected by a user according to the requirement of the user, which 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 compression 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.

In another embodiment of the present invention, a bag body 10 of the backpack is provided with a pocket 60 for accommodating articles at the outer side. The pocket 60 can be used to separately place some small components, making the backpack more reasonable and practical to store.

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 (10)

1. A backpack, characterized in that: the bag comprises a compression bag, a bag body and at least one shoulder strap, wherein two ends of the shoulder strap are fixedly connected to the bag body, an accommodating space for accommodating luggage is arranged in the bag body, and the compression bag is arranged in the accommodating space;

the compression bag includes the first bag body and the second bag body, the first bag body with the second bag body interconnect to can enclose and establish and form airtight space, airtight space is three-dimensional form, the first bag body and/or be provided with on the second bag body be used for with the opening of airtight space intercommunication, the opening part is provided with and is used for opening and closing airtight space's sealed locking piece.

2. The backpack of claim 1, wherein: the outline shape of the first bag body and the outline shape of the second bag body are matched with the outline shape of the containing space.

3. The backpack of claim 1, 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.

4. The backpack of claim 3, wherein: when the compression bag is in an idle load state, the second bag body is positioned in the first closed space, the second side wall part is attached to the inner wall surface of the first side wall part, the second bottom part is attached to the first bottom part, the first side wall part is attached to the inner peripheral wall of the accommodating space, and the first bottom part is attached to the bottom surface of the accommodating space;

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

when the compression bag is in a full-load state, the second bag body is positioned outside the first closed half cavity, the first side wall part is attached to the inner peripheral wall of the accommodating space, the first bottom part is attached to the bottom surface of the accommodating space, and the second side wall part is attached to the inner peripheral wall of the accommodating space or extends out of the accommodating space;

or the first bag body is positioned outside the second closed semi-cavity, the second side wall part is attached to the inner peripheral wall of the accommodating space, and the second bottom part is attached to the bottom surface of the accommodating space; the first side wall part is attached to the inner peripheral wall of the accommodating space or extends out of the accommodating space.

5. The backpack of claim 3, 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.

6. The backpack according to any one of claims 1 to 5, wherein: the bag comprises a bag body, and is characterized in that a connecting part which is used for being connected with the bag body and has a width of 5-30 mm is reserved at the circumferential edge of the first bag body and/or the circumferential edge of the second bag body, and the connecting part is sewn or movably connected in the bag body.

7. The backpack according to any one of claims 1 to 5, wherein: the sealing and locking piece is a self-sealing strip, an airtight zipper or a watertight zipper.

8. The backpack according to any of claims 1 to 5, wherein: the waterproof and breathable fabric bag is characterized in that the first bag body and the first bag body both comprise a fabric layer and a waterproof and breathable layer which are connected with each other and are arranged in a laminated manner, the waterproof and breathable layer of the first bag body and the waterproof and breathable layer of the second bag body are arranged oppositely, and the circumferential part of the waterproof and breathable layer of the first bag body and the circumferential part of the waterproof and breathable layer of the second bag body are fixedly combined together and enclose to form the closed space.

9. The backpack according to any one of claims 1 to 5, wherein: and the first bag body and/or the second bag body are/is provided with an exhaust device for exhausting gas in the closed space.

10. The backpack according to any one of claims 1 to 5, wherein: the bag body is provided with a zipper for opening or closing the accommodating space.

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