CN215603784U - Volume expandable backpack - Google Patents

Abstract

The utility model discloses a volume-expandable backpack, which comprises a backpack body assembly capable of expanding the volume and a backpack cover seamlessly bonded on one side of the backpack body assembly, wherein the backpack body assembly comprises a backpack main body and an extension part, an expansion part capable of being folded is seamlessly bonded between the backpack main body and the extension part, a first chain belt is sewn on the top end, the extension part and the bottom end of the backpack main body, a first pulling head is connected between the two first chain belts, a storage space is formed in the top of the backpack cover, a second chain belt is sewn on two sides of an opening of the storage space, and a second pulling head is connected between the two second chain belts. This knapsack of expandable volume can carry out the adjustment of inside volume size according to user's specific demand, and the in-service use of giving the user has brought the facility, but this knapsack is opened to furthest still, and the user of being convenient for takes and places article, labour saving and time saving, and the practicality is stronger.

Description

Volume expandable backpack

Technical Field

The utility model belongs to the technical field of backpacks, and particularly relates to a volume-expandable backpack.

Background

The backpack refers to a bag carried on the back, the materials of the backpack are diversified, and fashionable trends are led by suitcases with the textures of leather, plastic materials, terylene, canvas, nylon, cotton, hemp and the like. In the period of more and more listing the personalities, various styles such as conciseness, vintage, cartoon and the like also meet the requirement of fashion people for developing personalities from different sides. The style of the case is also expanded from the traditional business bag, schoolbag and traveling bag to the pen bag, change purse, small perfume bag and the like.

Most of the existing backpacks have simple structures and small internal volumes, and cannot adjust the internal volumes according to the specific requirements of users, so that inconvenience is brought to the actual use of the users; and present knapsack, its open-ended both ends mostly all extend to the both sides of inclusion for when the user opened the opening, only can open the first half of knapsack, waste time and energy when taking and placing object article, the practicality is lower.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a volume expandable backpack to address the problems set forth in the background above.

In order to achieve the purpose, the utility model provides the following technical scheme: the volume-expandable backpack comprises a backpack body assembly capable of expanding the volume and a backpack cover seamlessly adhered to one side of the backpack body assembly;

the backpack assembly comprises a backpack body and an extending part, the seamless bonding between the backpack body and the extending part is provided with an expanding part which can be folded, the top end, the extending part and the bottom end of the backpack body are respectively provided with a first chain belt in a sewing mode, and a first pull head is connected between the two first chain belts.

Preferably, the top of the bag cover is provided with a storage space, two sides of an opening of the storage space are sewn with a second chain belt, a second pull head is connected between the two chain belts, a shielding part capable of preventing rainwater from entering the storage space is arranged at the position, corresponding to the opening, of the top end of the bag cover, and a bag belt is sewn on one side of the bottom of the bag body assembly.

Preferably, the bottom end of the bag cover and the top end of the backpack body are both provided with a third chain belt in a sewing mode, and a third pull head is connected between the third chain belts.

Preferably, a partition part is fixedly mounted on one side inside the bag body assembly, and a perspective opening for sewing the gauze is formed in the center of the top end of the partition part.

Preferably, a C-shaped article taking opening is formed in one side of the separating portion, chain belts IV are sewn on two sides of the C-shaped article taking opening, and a pull head IV is connected between the chain belts IV.

Preferably, a first storage space and a second storage space are separated from top to bottom in the bag body assembly through a separating part, an elastic band I is sewn on one side of the inner wall of the second storage space, and one end of the elastic band I is fixedly connected with a plug.

Preferably, the top symmetry of keeping away from one side inner wall of elastic cord in the storage space two is sewed up and is provided with two elastic cords two, and two the one end fixedly connected with slope connecting piece of elastic cord two, one side fixed mounting that the slope connecting piece kept away from elastic cord two has the eye-splice, and the eye-splice grafting is fixed in the plug.

The utility model has the technical effects and advantages that: the backpack with the expandable volume benefits from the arrangement of the backpack body assembly, the two chain belts I and the pull head I, the two chain belts are separated by pulling the pull head I, so that the backpack body and the extension part can be separated, the expansion part in a folded state is further pulled to be unfolded, the volume of the backpack body assembly is expanded, the internal volume can be adjusted according to the specific requirements of a user, and convenience is brought to the practical use of the user;

benefit from the setting of inclusion subassembly, be built by contract, two chain belts three and two pull heads three, because inclusion subassembly and be built by contract only have one side to connect, when two pull heads three are pulled to the user, when making two chain belts three separate, but this knapsack is opened to furthest, and the user of being convenient for takes and places article, labour saving and time saving, the practicality is stronger. This knapsack of expandable volume can carry out the adjustment of inside volume size according to user's specific demand, and the in-service use of giving the user has brought the facility, but this knapsack is opened to furthest still, and the user of being convenient for takes and places article, labour saving and time saving, and the practicality is stronger.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention after expansion of the volume;

fig. 3 is a schematic view of the internal structure of the present invention.

In the figure: 1 bag body assembly, 101 bag cover, 2 bag body, 201 extending part, 3 expanding part, 4 pull head two, 401 shielding part, 5 bag belt, 501 pull head three, 6 separating part, 601 gauze, 7 pull head four, 8 containing space one, 801 containing space two, 9 elastic band one, 901 plug, 10 elastic band two, 1001 inclined connecting piece and 11 plug buckle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to adjust the internal volume of the backpack, so as to enlarge the internal volume of the backpack and facilitate the use of a user, as shown in fig. 1 and 2, the backpack with expandable volume comprises a backpack body assembly 1 capable of expanding the volume and a cover 101 seamlessly adhered to one side of the backpack body assembly 1, 1000D full waterproof main materials, 420D single-sided adhesive auxiliary materials and 210D single-sided adhesive auxiliary materials can be uniformly selected when the backpack is manufactured, the backpack body assembly 1 comprises a backpack main body 2 and an extension part 201, an expansion part 3 capable of being folded is seamlessly adhered between the backpack main body 2 and the extension part 201, a first chain belt is sewn at the top end, the extension part 201 and the bottom end of the backpack main body 2, a first pulling head is connected between the two first chain belts, the two first chain belts are separated by pulling the first pulling head, so that the backpack main body 2 and the extension part 201 can be separated, and the expansion part 3 in a folded state can be pulled to be unfolded, the volume of the expansion bag body assembly 1 can be adjusted according to the specific requirements of users, and convenience is brought to the practical use of the users.

In order to open the backpack to the maximum extent so as to be convenient for a user to take and place articles, as shown in fig. 1, in the backpack with the expandable volume, a storage space is formed at the top of a backpack cover 101, two sides of an opening of the storage space are sewn with a second chain belt, a second pull head 4 is connected between the two chain belts, the two chain belts are separated by pulling the second pull head 4, articles such as certificates and the like can be placed in the storage space so as to be convenient for the user to take, a shielding part 401 capable of preventing rainwater from entering the storage space is arranged at the position, corresponding to the opening, of the top end of the backpack cover 101, a bag strap 5 is sewn at one side of the bottom of a backpack body assembly 1, and the backpack can be carried up through the bag strap 5;

the bottom of be built by contract 101 and the top of knapsack main part 2 all sew up and are provided with chain belt three, and are connected with pull head three 501 between two chain belts three, and when the user stimulates two pull head three 501, when making two chain belt three separate, but this knapsack is opened to furthest, and the user of being convenient for takes and places article, labour saving and time saving, the practicality is stronger.

In order to store articles in a classified manner so as to be convenient for users to arrange, as shown in fig. 2 and fig. 3, in the backpack with the expandable volume, a partition part 6 is fixedly installed on one side inside a backpack body assembly 1, a perspective opening for sewing a gauze 601 is formed in the middle of the top end of the partition part 6, a C-shaped article taking opening is formed in one side of the partition part 6, chain belts four are sewn on two sides of the C-shaped article taking opening, a pull head four 7 is connected between the two chain belts four, a first accommodating space 8 and a second accommodating space 801 are separated from top to bottom in the backpack body assembly 1 through the partition part 6, the two chain belts are engaged with each other by pulling the pull head four 7, that is, the internal space of the backpack body assembly 1 can be separated into the first accommodating space 8 and the second accommodating space 801, and the users can store the articles in a classified manner;

one side of the inner wall of the second storage space 801 is sewed up and is provided with an elastic band I9, one end fixedly connected with plug 901 of the elastic band I9, top symmetry of the inner wall of the second storage space 801 far away from the elastic band I9 is sewed up and is provided with two elastic bands II 10, and one end fixedly connected with inclined connecting piece 1001 of the two elastic bands II 10, one side fixedly mounted of the inclined connecting piece 1001 far away from the elastic band II 10 is provided with a plug 11, and the plug 11 is inserted and fixed in the plug 901, put article in the second storage space 801, in order to prevent that it from rocking when the backpack moves, can insert the plug 901 in the plug 11, fix the article through the elastic band I9 and the two elastic bands II 10, and the use is convenient.

The working principle is as follows: this knapsack of expandable volume, during the use, stimulate two pull heads three 501, make two chain belt three separation, and rotate the be built by contract 101 can furthest open this knapsack, open the back, can carry out putting of article, if the volume of inclusion subassembly 1 is less when putting, can stimulate pull head one, make two chain belt one separation, and then make knapsack main part 2 and extension 201 separation, and the pulling is in the expansion portion 3 expansion of fold condition, can expand the volume of inclusion subassembly 1, the completion is to the inside volume size's of knapsack adjustment, the user of being convenient for deposits article, still can stimulate pull head two 4, make two chain belt two separation, place article such as certificate in the parking space, high durability and convenient use. This knapsack of expandable volume can carry out the adjustment of inside volume size according to user's specific demand, and the in-service use of giving the user has brought the facility, but this knapsack is opened to furthest still, and the user of being convenient for takes and places article, labour saving and time saving, and the practicality is stronger.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims (7)

1. The volume-expandable backpack comprises a backpack body assembly (1) capable of expanding the volume and a backpack cover (101) seamlessly adhered to one side of the backpack body assembly (1);

the method is characterized in that: the backpack assembly (1) comprises a backpack main body (2) and an extending part (201), the seamless bonding between the backpack main body (2) and the extending part (201) is provided with an expanding part (3) capable of being folded, the top end of the backpack main body (2), the extending part (201) and the bottom end are provided with a first chain belt in a sewing mode, and a first pull head is connected between the two first chain belts.

2. The volume expandable backpack according to claim 1, wherein: the bag comprises a bag body assembly (1) and is characterized in that a storage space is formed in the top of the bag body assembly (101), two chain belts II are sewn on two sides of an opening of the storage space, a pull head II (4) is connected between the two chain belts II, a shielding portion (401) capable of preventing rainwater from entering the storage space is arranged at the position, corresponding to the opening, of the top end of the bag body assembly (101), and a bag belt (5) is sewn on one side of the bottom of the bag body assembly (1).

3. The volume expandable backpack according to claim 1, wherein: the bottom end of the bag cover (101) and the top end of the backpack body (2) are provided with a third chain belt in a sewing mode, and a third pull head (501) is connected between the third chain belts.

4. The volume expandable backpack according to claim 1, wherein: a partition part (6) is fixedly installed on one side inside the bag body assembly (1), and a perspective opening for sewing the gauze (601) is formed in the middle of the top end of the partition part (6).

5. The volume expandable backpack according to claim 4, wherein: a C-shaped article taking opening is formed in one side of the separating portion (6), chain belts IV are sewn on two sides of the C-shaped article taking opening, and a pull head IV (7) is connected between the chain belts IV.

6. The volume expandable backpack according to claim 5, wherein: a first storage space (8) and a second storage space (801) are separated from top to bottom in the bag body assembly (1) through a separating part (6), an elastic band (9) is sewn on one side of the inner wall of the second storage space (801), and one end of the elastic band (9) is fixedly connected with a plug (901).

7. The volume expandable backpack according to claim 6, wherein: two elastic bands II (10) are symmetrically sewn and arranged at the top of the inner wall of one side, far away from the elastic band I (9), in the storage space II (801), an inclined connecting piece (1001) is fixedly connected to one end of each elastic band II (10), a buckle (11) is fixedly arranged on one side, far away from the elastic band II (10), of each inclined connecting piece (1001), and the buckle (11) is inserted and fixed in the plug (901).

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