Luggage accessory and luggage assembly

Abstract

The utility model provides a luggage accessory and luggage subassembly, luggage accessory includes dilatation piece and first connecting structure, dilatation piece has main part and connecting main part at least one pocket part that is used for holding article, at least one pocket part includes first pocket part, the first pocket part has first use state and second use state, and the second pocket part has second use state and second use state. In the first use state, the first pocket part is provided with a first opening located in the first side of the expansion piece, and in the second use state, the first pocket part extends out of the first side of the expansion piece and forms a second opening in the second side of the expansion piece. The first connecting structure is connected with the expansion part and used for being detachably connected with the luggage body so that the luggage accessory can be detachably connected with the luggage body, when the luggage accessory is connected to the luggage body, a first containing cavity is formed between the main body part and the luggage body, and the first pocket part is located in the first containing cavity in the first use state. And the first pocket part is positioned outside the first storage cavity in the second use state and is communicated with the first storage cavity through the second opening.

Description

Technical Field

[0001] This application relates to the field of storage structure technology, specifically to a bag accessory and bag component. Background Technology

[0002] The capacity of a bag is determined by its volume, and the internal volume of the bag is fixed, making the volume relatively constant and unable to be increased. This means the number or volume of items that can be placed inside the bag is also fixed. Although adding multiple pockets or compartments to divide the bag into different storage spaces does not increase its internal volume; in fact, the volume decreases due to the addition of compartments.

[0003] When users use bags for outdoor sports, travel, etc., they will pack basic necessities such as clothes and personal care products, filling the internal space. This means that when they buy something they like and need to put it in the bag, there is no space to put it in the bag. Users need to have extra bags to accommodate it, resulting in carrying too many bags and a poor experience.

[0004] At the same time, when a large number of items are packed inside, the items will pile up, requiring the user to constantly rummage through the bag to find a specific item. This can also easily lead to the items inside the bag becoming disorganized, making it very inconvenient for the user to use the bag. Utility Model Content

[0005] To solve the above-mentioned technical problems, it is necessary to provide a bag accessory and bag component that is simple in structure, easy to carry, and can expand the bag's carrying capacity.

[0006] Firstly, this application provides a bag accessory for expanding the capacity of a bag, including...

[0007] An expander has a main body and at least one pocket portion connected to the main body for holding an article. The at least one pocket portion includes a first pocket portion having a first usage state and a second usage state. In the first usage state, the first pocket portion has a first opening located on a first side of the expander, allowing a user to insert a first article into a first cavity formed by a first surface of the first pocket portion through the first opening. In the second usage state, the first pocket portion extends beyond the first side of the expander and forms a second opening on a second side of the expander, allowing the user to insert a second article into a second cavity formed by a second surface of the pocket portion through the second opening.

[0008] A first connecting structure connects the expansion member and is used to detachably connect to the bag body so that the bag accessory can be detachably connected to the bag body. The first connecting structure includes a zipper structure. When the bag accessory is connected to the bag body, a first storage cavity is formed between the main body and the bag body. The first pocket is located inside the first storage cavity in the first use state. In the second use state, the first pocket is located outside the first storage cavity and communicates with the first storage cavity through the second opening.

[0009] In some embodiments, the first pocket portion and the main body portion are formed by sewing together a single piece of fabric of an integral structure. The main body portion includes a first portion and a second portion. The first edge of the first pocket portion is integrally formed with the first portion. The second edge of the first pocket portion is integrally formed with the second portion. The third edge of the first pocket portion is folded together and connected to the first side of the first connecting structure. The fourth edge of the first pocket portion is folded together and connected to the second side of the first connecting structure. The first side and the second side are disposed opposite to each other.

[0010] In some embodiments, the at least one pocket portion further includes a second pocket portion, which is formed by sewing the second pocket portion, the main body portion, and the first pocket portion together from the same piece of fabric. The main body portion further includes a third portion. The first edge of the second pocket portion is integrally formed with the second portion, the second edge of the second pocket portion is integrally formed with the third portion, the third edge of the second pocket portion is folded together and connected to the first side of the first connecting structure, and the fourth edge of the second pocket portion is folded together and connected to the second side of the first connecting structure. The second pocket portion is adjacent to the first pocket portion.

[0011] In some embodiments, the main body further includes a base plate portion, wherein a first edge of the base plate portion is integrally formed with the third portion or the second portion, a second edge of the base plate portion is connected to a third side of the first connecting structure, the third side of the first connecting structure is a bottom side and is connected between the first side and the second side of the first connecting structure, the third edge of the base plate portion is connected to one end of the third portion, and a fourth edge of the base plate portion is connected to the other end of the third portion.

[0012] In some embodiments, the first connecting structure further includes a fourth side connected between the first side and the second side of the first connecting structure, the third side of the first connecting structure being disposed opposite to the fourth side of the first connecting structure, and the fourth side of the first connecting structure including a first sub-part and a second sub-part; the first part includes a first edge connecting the upper part of the first side and the first sub-part of the first connecting structure and a second edge connecting the upper part of the second side and the second sub-part of the first connecting structure, the top of the first edge and the top of the second edge being connected, the first part further including a first inner edge and a second inner edge, the first end of the first inner edge and the first end of the second inner edge being connected, the second end of the first inner edge and the second end of the second inner edge being connected, the second end of the first inner edge also being connected to the connection between the first edge and the second edge, and the second end of the second inner edge also being connected to the connection between the first edge and the second edge, the bag accessory further including a second connecting structure, the second connecting structure being used to detachably connect the first inner edge and the second inner edge, and when the first inner edge and the second inner edge are separated, a third opening is formed between the first inner edge and the second inner edge, the third opening being used to communicate with the first storage cavity for a user to take out or put in items through the third opening.

[0013] In some embodiments, the first connecting structure includes a first zipper portion, the bag body includes a second zipper portion, and the first zipper portion and the second zipper portion are detachably connected by a first zipper head; the second connecting structure includes a third zipper portion connecting a first inner edge and a fourth zipper portion connecting a second inner edge, and the fourth zipper portion and the third zipper portion are detachably connected by a second zipper head.

[0014] In some embodiments, a first connector is provided between the first pocket portion and the first part, and a second connector is provided between the first pocket portion and the second part. The first connector and the second connector are detachably connected to close or open the first opening. The first connector is a fifth zipper portion, and the second connector is a sixth zipper portion. The fifth zipper portion and the sixth zipper portion are detachably connected by a third zipper head.

[0015] In some embodiments, a third connector is provided between the second pocket portion and the second part, and a fourth connector is provided between the second pocket portion and the third part. The third connector and the fourth connector are detachably connected to close or open the second pocket portion. The third connector is a seventh zipper portion, and the fourth connector is an eighth zipper portion. The seventh zipper portion and the eighth zipper portion are detachably connected via a fourth zipper head.

[0016] In some embodiments, the expansion member is made of an elastic fabric and is configured to deform under external force; the stretch ratio of the elastic fabric in the longitudinal and transverse directions is 1:1.3.

[0017] In some embodiments, the main body and / or pocket portion are provided with a printed layer, the printed layer being a human figure, animal, or cartoon facial feature pattern.

[0018] Secondly, this application also provides a bag assembly, including a bag body and a bag accessory detachably connected to the bag body. The bag accessory is used to expand the capacity of the bag body, and the bag accessory adopts the aforementioned bag accessory. The bag assembly using the aforementioned bag accessory also has the beneficial effects of the aforementioned bag accessory.

[0019] In some embodiments, the bag body includes a back panel assembly, and the bag accessory is configured to be detachably connected to the back panel assembly; the back panel assembly has a waterproof partition and / or waterproof bag on the side near the bag accessory; the back panel assembly has a second storage cavity; at least one of the first storage cavity and the second storage cavity is used to fill with stuffing to form a cushion; the back panel assembly includes a back panel body and the waterproof partition detachably connected to the back panel body at least partially via a second connecting structure, the back panel body and the waterproof partition surrounding the second storage cavity. The waterproof partition and / or waterproof bag allow items placed inside to be waterproofed and preserved; filling with stuffing to form a cushion increases the product's functionality and practicality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of the first usage state of the bag assembly according to the first embodiment of this application;

[0022] Figure 2 yes Figure 1 A structural diagram showing the second usage state of the bag assembly;

[0023] Figure 3 yes Figure 1 An exploded view of the bag components shown;

[0024] Figure 4 yes Figure 3An exploded view of the bag components shown from another angle;

[0025] Figure 5 yes Figure 1 A cross-sectional view of the bag accessories of the bag assembly shown;

[0026] Figure 6 yes Figure 1 A schematic diagram of the third usage state of the bag assembly shown;

[0027] Figures 7 to 10 yes Figure 1 A schematic diagram of the manufacturing process of bag accessories for the bag components shown;

[0028] Figure 11 This is a structural schematic diagram of the first usage state of the bag assembly according to the second embodiment of this application;

[0029] Figure 12 yes Figure 11 A structural diagram showing the second usage state of the bag assembly;

[0030] Figure 13 This is an exploded view of the bag assembly according to the third embodiment of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Luggage and bag components;

[0033] 1. Bag body; 11, 14. Back panel assembly; 141. Back panel main body; 142. Compartment; Second storage compartment 14a;

[0034] 2. Bag accessories; 2a. First storage cavity; 3. Expansion piece; 31. Main body; 32. Pocket; 33. Base plate; 311. First part; 312. Second part; 313. Third part; 321. First pocket; 322. Second pocket; 331. First edge of base plate; 332. Second edge of base plate; 333. Third edge of base plate; 334. Fourth edge of base plate; 311a. First inner edge; 311b. Second inner edge; 311c. Third opening; 3211. First cavity; 3212. First opening; 3221. Second cavity; 3222. Second opening; 34. First printed pattern; 35. Second printed pattern;

[0035] 4. First connecting structure; 41. First connector; 42. Second connector; 43. First side; 44. Second side; 45. Third side; 46. Fourth side; 421. First zipper head; 461. First sub-part; 462. Second sub-part;

[0036] 5. Second connecting structure; 51. Third zipper section; 52. Fourth zipper section; 53. Second zipper pull;

[0037] 100A, Bag assembly; 1A, Bag body; 6, First pocket section; 7, Second pocket section; 61, First connector; 62, Second connector; 63, Third zipper pull; 71, Third connector; 72, Fourth connector; 73, Fourth zipper pull; 611, Fifth zipper section; 612, Sixth zipper section; 711, Seventh zipper section; 712, Eighth zipper section; 31a, First part; 31b, Second part; 31c, Third part. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0041] The terms "first," "second," and "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects and not to describe a specific order. Furthermore, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0042] First Embodiment

[0043] Please see Figures 1 to 10The first embodiment of this application provides a bag assembly 100, including a bag body 1 and a bag accessory 2 detachably connected to the bag body 1. The bag accessory 2 is used to expand the capacity of the bag body 1, allowing the bag assembly 100 to hold more items. Specifically, the bag accessory 2 is installed on the outside of the bag body 1, forming a first storage cavity with the bag body 1. This allows for the storage of more items in addition to the items already inside the bag body 1, making it more convenient for users.

[0044] The bag body 1 includes a back panel assembly 11, and the bag accessory 2 is configured to be detachably connected to the back panel assembly 11. The bag accessory 2 is used to expand the capacity of the bag body and includes an expansion component 3 and a first connecting structure 4. The first connecting structure 4 can be a zipper structure.

[0045] The expander 3 has a main body 31 and at least one pocket 32 ​​for holding an item connected to the main body 31. The at least one pocket 32 ​​includes a first pocket 321. The first pocket 321 has a first use state and a second use state. In the first use state, the first pocket 321 has a first opening 3212 located on a first side of the expander 3, so that the user can put a first item into a first cavity 3211 formed by the first surface of the first pocket 321 through the first opening. In the second use state, the first pocket 321 extends out of the first side of the expander 3 and forms a second opening 3222 on the second side of the expander, so that the user can put a second item into a second cavity 3221 formed by the second surface of the pocket through the second opening.

[0046] It is understood that when an item needs to be placed into the first pocket portion 321, it needs to be placed into the first pocket portion 321 through the first opening 3212. In the second usage state, the first pocket portion 321 is connected to the first storage cavity 2a, thereby changing the volume of the first storage cavity 2a, making the volume of the first storage cavity 2a larger. In the first usage state, the first pocket portion 321 is located inside the first storage cavity 2a. Since the first pocket portion 321 itself has a certain volume, the volume of the first storage cavity 2a becomes smaller. Therefore, in this embodiment, the first pocket portion 321 can change the volume of the first storage cavity 2a, allowing the user to select the usage state of the first pocket portion 321 according to the actual needs of the scenario.

[0047] In the first usage state, the first pocket portion 321 is located inside the first storage cavity 2a, and the first opening 3212 communicates with the outside, thereby allowing items to be easily placed directly into the first pocket portion 321 through the first opening 3212 for convenient user access; please refer to Figure 2 and Figure 4 In the second usage state, the first pocket portion 321 is located outside the bag assembly 100, and the first opening 3212 connects to the first storage cavity 2a. At this time, the first storage cavity 2a needs to be opened before the item can be put into the first pocket portion 321 after passing through the first storage cavity 2a and the second opening 3222 in sequence. When it is necessary to take out the item, the first storage cavity 2a also needs to be opened before the item can be taken out.

[0048] The expansion member 3 can be made of elastic fabric, and is configured to deform under external force; the stretch ratio of the elastic fabric in the horizontal and vertical directions is 1:1.3. Specifically, in this embodiment, the main body 31 can be an elastic fabric cover, made of elastic fabric such as synthetic fibers (e.g., spandex blend), elastic nylon, elastic polyester fiber, elastic denim, etc., or made of knitted fabric, elastic mesh, elastic fleece, etc. Using the elastic fabric cover, it can be placed on the outside of the bag body and has a certain elasticity. When not in use, the elastic fabric cover is placed on the outside of the bag body 1 and fits tightly against the bag body, thereby keeping the volume of the bag assembly small and eliminating the need to store the main body, thus making it convenient for users to carry; when items need to be put in, because the elastic fabric cover itself is elastic, more items can be put in. The expansion component is made of elastic fabric, which gives it a certain elastic tension, thereby increasing the volume of the first storage cavity and facilitating the storage and carrying of the bag accessories.

[0049] It is understood that the first connecting structure 4 connects to the expansion member 3 and is used to detachably connect to the bag body 1 so that the bag accessory 2 can be detachably connected to the bag body 1. When the bag accessory 2 is connected to the bag body 1, a first storage cavity 2a is formed between the main body 31 and the bag body 1. The first pocket part 321 is located inside the first storage cavity 2a in the first use state. In the second use state, the first pocket part 321 is located outside the first storage cavity 2a and communicates with the first storage cavity 2a through the second opening 3222.

[0050] Specifically, the first pocket portion 321 and the main body portion 31 are formed by sewing together a single piece of fabric. The main body portion 31 includes a first part 311 and a second part 312. The first edge of the first pocket portion 321 is integrally formed with the first part 311, the second edge of the first pocket portion 321 is integrally formed with the second part 312, the third edge of the first pocket portion is folded together and connected to the first side 43 of the first connecting structure 4, and the fourth edge of the first pocket portion is folded together and connected to the second side 44 of the first connecting structure 4. The first side 43 and the second side 44 are arranged opposite to each other. It can be understood that the first pocket portion 321 and the main body portion 31 being formed by sewing together a single piece of fabric is not only simple to manufacture but also durable.

[0051] In this embodiment, the at least one pocket portion 32 further includes a second pocket portion 322. The second pocket portion 322 is formed by sewing the same piece of fabric as the main body portion 31 and the first pocket portion 321. The main body portion further includes a third portion 313. The first edge of the second pocket portion 322 is integrally formed with the second portion 312, and the second edge of the second pocket portion 322 is integrally formed with the third portion 313. The third edge of the second pocket portion 322 is folded and connected to the first side 43 of the first connecting structure, and the fourth edge of the second pocket portion 322 is folded and connected to the second side 44 of the first connecting structure. The second pocket portion 322 is adjacent to the first pocket portion 321. Specifically, the number of pocket portions 32 can be designed according to actual needs. This embodiment mainly uses two pocket portions as an example for illustrative purposes, but more pocket portions can also be provided, and it is not limited to this embodiment.

[0052] The main body 31 also includes a base plate portion 33. The first edge 331 of the base plate portion is integrally formed with the third portion 313 or the second portion 312. The second edge of the base plate portion 33 is connected to the third side 45 of the first connecting structure. The third side 45 of the first connecting structure is the bottom side and is connected between the first side 43 and the second side 44 of the first connecting structure. The third edge 333 of the base plate portion is connected to one end of the third portion 313, and the fourth edge 334 of the base plate portion is connected to the other end of the third portion 313. It can be understood that the additional design of the base plate portion 33 improves the bottom load-bearing capacity of the expanded first storage cavity, resulting in better usability.

[0053] The first connecting structure 4 further includes a fourth side 46 connecting the first side 43 and the second side 44 of the first connecting structure. The third side 45 of the first connecting structure is disposed opposite to the fourth side 46 of the first connecting structure. The fourth side 46 of the first connecting structure includes a first sub-part 461 and a second sub-part 462. The first part 311 includes a first edge connecting the upper part of the first side 43 and the first sub-part 461 of the first connecting structure and a second edge connecting the upper part of the second side 44 and the second sub-part 462 of the first connecting structure. The top of the first edge and the top of the second edge are connected. The first part 311 also includes a first inner edge 311a and a second inner edge 311b. The first end of the first inner edge 311a and the second inner edge 311b are connected. The first end is connected to the second end of the first inner edge 311a and the second end of the second inner edge 311b. The second end of the first inner edge 311a is also connected to the connection between the first edge and the second edge, and the second end of the second inner edge 311b is also connected to the connection between the first edge and the second edge. The bag accessory 2 also includes a second connecting structure 5, which is used to detachably connect the first inner edge 311a and the second inner edge 311b. When the first inner edge 311a and the second inner edge 311b are separated, a third opening 311c is formed between the first inner edge 311a and the second inner edge 311b. The third opening 311c is used to communicate with the first storage cavity 2a so that the user can take out or put in items through the third opening 311c. It can be understood that through the design of the third opening 311c, the user can easily open the first storage cavity without using the first connecting structure, thus facilitating the user's take-out and put-in of items and improving the user experience.

[0054] Specifically, the first connecting structure 4 includes a first zipper portion 41, and the bag body 1 includes a second zipper portion 42. The first zipper portion 41 and the second zipper portion 42 are detachably connected via a first zipper head 421. The second connecting structure 5 includes a third zipper portion 51 connecting the first inner edge 311a and a fourth zipper portion 52 connecting the second inner edge 311. The fourth zipper portion 52 and the third zipper portion 51 are detachably connected via a second zipper head 53. It can be understood that by setting the zipper structure, the bag assembly achieves better performance.

[0055] Please see Figure 7-10 It is understood that the expansion component can be manufactured in the following ways.

[0056] First, it can provide Figure 7 As shown in the image, a single piece of fabric, next, as... Figure 8As shown, at least one pleated pocket portion 32 (such as a first pocket portion 321 and a second pocket portion 322) is formed as needed, and then, as... Figure 9 As shown, the two edges 333 and 334 of the base plate 33 are sewn together with the main body 31, and then according to... Figure 10 As shown, the two corners of the main body 31 are sewn together to form the first inner edge 311a and the second inner edge 311b, thereby obtaining the expansion member 3. Finally, the first connecting structure 4 and the second connecting structure 5 are sewn together. Figure 10 The above can be obtained on the expansion component 3 shown. Figure 1-6 The bag and luggage accessory shown is 2.

[0057] As can be seen from the above process, the manufacturing process of the bag accessories in this embodiment is relatively simple, has high production efficiency, and low cost.

[0058] Second Embodiment

[0059] Please see Figure 11-12 The second embodiment of this application provides a bag assembly 100A, which is basically the same as the bag assembly 100 of the first embodiment. That is to say, the description of the first embodiment of this application is basically applicable to the bag assembly 100A of the second embodiment. The following mainly describes the differences between the second embodiment and the first embodiment.

[0060] Specifically, in the second embodiment, a first connector 61 is provided between the first pocket portion 6 and the first part 31a, and a second connector 62 is provided between the first pocket portion 6 and the second part 31b. The first connector 61 and the second connector 62 are detachably connected to close or open the first opening. The first connector 61 is a fifth zipper portion 611, and the second connector 62 is a sixth zipper portion 621. The fifth zipper portion 611 and the sixth zipper portion 621 are detachably connected by a third zipper head 63.

[0061] A third connector 71 is provided between the second pocket portion 7 and the second part 31b, and a fourth connector 72 is provided between the second pocket portion 7 and the third part 31c. The third connector 71 and the fourth connector 72 are detachably connected to close or open the second pocket portion 7. The third connector 71 is a seventh zipper portion 711, and the fourth connector 72 is an eighth zipper portion 721. The seventh zipper portion 711 and the eighth zipper portion 721 are detachably connected by a fourth zipper head 73.

[0062] Understandably, the zipper design effectively prevents items from being lost due to unclosed pocket openings, thus improving safety and user experience.

[0063] Furthermore, in the first and second embodiments described above, the main body 31 and / or pocket 32 ​​of the expansion member 3 may be provided with a first printed layer 34, making the appearance of the bag accessory 2 more aesthetically pleasing and visually appealing. Specifically, the first printed layer 34 may be formed by spraying or by painting. The pattern of the first printed layer 34 can be designed according to the actual situation, and may be a human figure, animal, or cartoon facial feature pattern, such as eyes, nose, ears, etc., or other animal or landscape patterns.

[0064] Similarly, the pocket portion 32 also includes a second printed layer 35. Specifically, the second printed layer 35 can be formed by spraying or by painting. The pattern of the second printed layer 35 can be designed according to the actual situation, and can be a person, animal, or cartoon facial feature pattern, such as a mouth or tongue, or other animal or landscape patterns. The second printed layer 35 makes the appearance of the bag accessory 2 more aesthetically pleasing and visually appealing.

[0065] Third Embodiment

[0066] Please see Figure 13 The third embodiment of this application provides a bag assembly, which is basically the same as the bag assembly of the first embodiment. That is to say, the description of the first embodiment of this application is basically applicable to the bag assembly of the third embodiment. The following mainly describes the differences between the third embodiment and the first embodiment.

[0067] In the third embodiment, the bag body 1A includes a back panel assembly 14, the back panel assembly 14 enclosing the back panel main body 141 and having a partition 142 (such as a waterproof partition) on the side near the bag accessory 2; the back panel assembly 14 has a second storage cavity 14a; at least one of the first storage cavity and the second storage cavity 14a formed by the bag accessory 2 and the bag body 1A can be used to fill with stuffing to form a cushion.

[0068] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A bag accessory for expanding the capacity of a bag body, characterized in that, The bag accessory comprises: an expansion member having a main body portion and at least one pocket portion connected to the main body portion for accommodating articles, the at least one pocket portion including a first pocket portion having a first use state and a second use state, in the first use state, the first pocket portion has a first opening located at a first side of the expansion member, so that a user can put first articles into a first cavity enclosed by a first surface of the first pocket portion from the first opening, in the second use state, the first pocket portion extends out of the first side of the expansion member and forms a second opening at a second side of the expansion member, so that the user can put second articles into a second cavity enclosed by a second surface of the pocket portion from the second opening; and a first connecting structure connected to the expansion member and configured to detachably connect with the bag body so that the bag accessory can be detachably connected with the bag body, the first connecting structure includes a zipper structure, and when the bag accessory is connected with the bag body, a first receiving cavity is formed between the main body portion and the bag body, the first pocket portion is located in the first receiving cavity in the first use state, and the first pocket portion is located outside the first receiving cavity in the second use state and communicates with the first receiving cavity through the second opening.

2. The bag accessory of claim 1, wherein the first pocket portion and the main body portion are formed by sewing one piece of fabric of an integral structure, the main body portion includes a first portion and a second portion, a first edge of the first pocket portion is of an integral structure with the first portion, a second edge of the first pocket portion is of an integral structure with the second portion, a third edge of the first pocket portion is folded and connected to a first side of the first connecting structure, and a fourth edge of the first pocket portion is folded and connected to a second side of the first connecting structure, the first side and the second side are oppositely arranged.

3. The bag accessory of claim 2, wherein the at least one pocket portion further includes a second pocket portion, the second pocket portion is formed by sewing one piece of fabric of an integral structure with the main body portion and the first pocket portion, the main body portion further includes a third portion, a first edge of the second pocket portion is of an integral structure with the second portion, a second edge of the second pocket portion is of an integral structure with the third portion, a third edge of the second pocket portion is folded and connected to the first side of the first connecting structure, and a fourth edge of the second pocket portion is folded and connected to the second side of the first connecting structure, the second pocket portion is adjacent to the first pocket portion. ​ 4. The bag accessory of claim 3, wherein the main body further comprises a bottom panel portion, a first edge of the bottom panel portion being integral with the third portion or the second portion, a second edge of the bottom panel portion being connected to a third side of the first connecting structure, the third side of the first connecting structure being a bottom side and being connected between the first side of the first connecting structure and the second side of the first connecting structure, a third edge of the bottom panel portion being connected to one end of the third portion, and a fourth edge of the bottom panel portion being connected to another end of the third portion.

5. The bag accessory of claim 3, wherein the first connecting structure further comprises a fourth side connected between the first side of the first connecting structure and the second side of the first connecting structure, the third side of the first connecting structure being opposite to the fourth side of the first connecting structure, the fourth side of the first connecting structure comprising a first sub-portion and a second sub-portion; the first portion comprising a first edge connected to an upper portion of the first side of the first connecting structure and the first sub-portion and a second edge connected to an upper portion of the second side of the first connecting structure and the second sub-portion, a top portion of the first edge and a top portion of the second edge being connected, the first portion further comprising a first inner edge and a second inner edge, a first end of the first inner edge and a first end of the second inner edge being connected, a second end of the first inner edge and a second end of the second inner edge being connected, the second end of the first inner edge further being connected to a connection between the first edge and the second edge, the second end of the second inner edge also being connected to the connection between the first edge and the second edge, the bag accessory further comprising a second connecting structure for detachably connecting the first inner edge and the second inner edge, when the first inner edge and the second inner edge are separated, a third opening is formed between the first inner edge and the second inner edge, the third opening being configured to communicate with the first receiving cavity for a user to access the first receiving cavity through the third opening.

6. The bag accessory of claim 5, wherein the first connecting structure comprises a first zipper portion, the bag body comprises a second zipper portion, the first zipper portion and the second zipper portion being detachably connected by a first zipper head; the second connecting structure comprises a third zipper portion connected to the first inner edge and a fourth zipper portion connected to the second inner edge, the fourth zipper portion and the third zipper portion being detachably connected by a second zipper head; a first connecting member is provided between the first pocket portion and the first portion, a second connecting member is provided between the first pocket portion and the second portion, the first connecting member and the second connecting member being detachably connected to close or open the first opening; the first connecting member is a fifth zipper portion, the second connecting member is a sixth zipper portion, the fifth zipper portion and the sixth zipper portion being detachably connected by a third zipper head.

7. The bag accessory of claim 3, wherein a third connecting member is provided between the second pocket portion and the second portion, and a fourth connecting member is provided between the second pocket portion and the third portion, the third connecting member and the fourth connecting member being detachably connected to close or open the second pocket portion; the third connecting member is a seventh zipper portion, and the fourth connecting member is an eighth zipper portion, the seventh zipper portion and the eighth zipper portion being detachably connected by a fourth zipper head.

8. The bag accessory of claim 1, wherein the expansion member is made of elastic cloth configured to be deformed under external force; the elastic cloth has a stretch ratio of 1:1.3 in the horizontal and vertical directions; the main body portion and / or the pocket portion is provided with a printed pattern layer, the printed pattern layer being a pattern of human, animal or cartoon facial features.

9. A luggage assembly, characterized by, A bag accessory as claimed in any one of claims 1-8 is used to expand the capacity of a bag body, the bag accessory being detachably connected to the bag body.

10. The luggage assembly of claim 9, wherein, The bag body comprises a backboard assembly, the bag accessory being configured to be detachably connected to the backboard assembly; the backboard assembly is provided with a waterproof barrier and / or a waterproof pocket on a side close to the bag accessory; the backboard assembly has a second receiving cavity; at least one of the first receiving cavity and the second receiving cavity is used to accommodate a filler to form a backrest; the backboard assembly comprises a backboard main body and the waterproof barrier detachably connected to the backboard main body at least in part by a second connecting structure, the backboard main body and the waterproof barrier enclosing the second receiving cavity.

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