CN108013583A - A kind of knapsack - Google Patents

Abstract

The invention discloses a backpack, which comprises a bag main body and a plurality of small bags; the back of the bag main body is provided with a plurality of parallel installation strips, and a plurality of slots are arranged between the installation strips and the back of the bag main body. The small bag is provided with a buckle corresponding to the slit, and the small bag is detachably arranged on the bag main body through the buckle and the slit. When in use, each small bag can be used to classify and place items. After storing the items, insert the buckle into the slot, and then the small bag can be detachably installed on the main body of the bag. When the items need to be taken out, the small bag can be removed from the main body of the bag It is very convenient to use; multiple small bags can be used in combination, which increases the volume expansion of the backpack.

Description

a backpack

technical field

The invention belongs to the technical field of knapsacks, and in particular relates to a knapsack which can detach a plurality of small bags.

Background technique

With the continuous improvement of people's living and consumption standards, all kinds of backpacks have become indispensable accessories around people. According to the volume of backpacks, backpacks can generally be divided into three categories: large, medium and small.

Large backpacks have a volume of more than 50 liters, which are suitable for medium and long-distance travel and more professional expeditions. Large backpacks can be divided into mountaineering bags and long-distance travel backpacks according to different uses. The mountaineering bag is generally long and thin, so as to pass through the narrow terrain. The bag is divided into upper and lower layers, separated by a zippered interlayer in the middle, so that it is very convenient to take and place items. The side and top of the backpack can be tied with tents and mats. It virtually increases the volume of the backpack, and there is an ice ax cover outside the backpack, which can be used for binding ice axes and snow poles. The body structure of long-distance travel backpacks is similar to that of mountaineering bags, except that the body is wider and equipped with many side pockets for sorting and placing odds and ends. The front face of long-distance travel backpacks can usually be fully opened, making it very convenient to take and place items.

The volume of medium-sized backpacks is generally between 30-50 liters. These backpacks are more widely used. For 2-4 days of field travel, travel between cities and some long-distance non-camping self-help travel, medium-sized backpacks are perfect. up. It can fit your carry-on clothes and some daily necessities. The styles and types of medium-sized backpacks are more diverse. Some backpacks have added some side pockets, which are more conducive to packing items. The back structure of these packs is roughly the same as that of larger packs.

The volume of small backpacks is less than 30 liters. These backpacks are generally used in cities, and of course they are also very suitable for 1-2 day outings.

Traditional knapsacks are all one-piece overall structures with fixed volume, poor expandability, and inconvenient use; in order to classify items, traditional knapsacks are equipped with multi-layer bags or side pockets outside the bag, but their existence The problem of inconvenient access to items.

Contents of the invention

Based on this, in order to solve the above problems, the present invention proposes a backpack. By designing a plurality of detachable small bags, the expandability of the backpack volume is increased, and the items can be sorted and retrieved conveniently.

Technical scheme of the present invention is:

A backpack includes a bag main body and a plurality of small bags; the plurality of small bags are detachably arranged on the bag main body.

Preferably, the back of the bag main body is provided with a plurality of parallel installation strips, and a plurality of slots are provided between the installation strips and the back of the bag main body, and the small bag is provided with buckles corresponding to the slots. , the small bag is detachably arranged on the main body of the bag through the buckle and slot; the main body of the bag is provided with a knapsack cover that can cover the small bag; There are buckles corresponding to the ferrule on both sides.

When in use, each small bag can be used to classify and place items. After storing the items, insert the buckle into the slot, and then the small bag can be detachably installed on the main body of the bag. When the items need to be taken out, the small bag can be removed from the main body of the bag It is very convenient to use; multiple small bags can be used in combination, which increases the volume expansion of the backpack. After the small bag is installed, cover the backpack cover on the small bag, and snap the buckle on the main body of the bag into the sleeve of the backpack cover, so as to fix the backpack cover, and finally fasten the small bag on the back of the main body of the bag to increase stability To prevent the small bag from falling.

Further, the buckle includes a long end, a short end and an arc portion, the long end and the short end are respectively connected to the two ends of the arc portion; the outer side of the small bag is provided with an outer interlayer, and the long end of the buckle It is inserted in the outer interlayer, and the long end is fixed on the small bag by rivets.

Furthermore, the short end is provided with a through hole.

Preferably, there are four installation strips, which are respectively arranged in parallel on the back of the bag main body.

Wherein, the long end of the buckle is inserted between the small bag and the outer interlayer, so as to be fixed by rivets. When in use, the short end of the buckle is inserted into the seam between the installation strip and the main body of the bag, and then the small bag is installed. On the main body of the bag; during installation, each small bag can be installed in combination at a suitable location.

Preferably, one end of the backpack cover is detachably arranged on the top of the bag main body through a zipper.

When the small bag is not installed on the bag main body, the backpack cover can be removed from the bag main body through the zipper, which is convenient for replacement and cleaning of the backpack cover.

Preferably, the bag main body is a sandwich structure, and a reinforced support frame is detachably arranged in the sandwich.

Setting up a reinforced support frame can avoid the deformation of the main body of the bag, withstand greater external impact, and better protect the items in the main body of the bag.

Further, the reinforced support frame is made of aluminum alloy, polypropylene or polyethylene.

Aluminum alloy, polypropylene and polyethylene materials are light in weight and high in strength, and the reinforced support frame is made of aluminum alloy, polypropylene or polyethylene, which can not only play a better protective role, but also reduce the weight of the entire schoolbag.

Preferably, a buffer layer is provided on the inner side wall of the bag body.

The design of the buffer layer can buffer the articles in the bag main body and better protect the articles in the bag main body.

Preferably, a strap is provided on the front of the bag main body, and a storage interlayer is provided inside the strap.

The storage interlayer can be used to store all kinds of cards, or wallets, etc., which is very convenient to use.

The beneficial effects of the present invention are:

(1) The present invention provides a backpack. By designing a plurality of detachable small bags, each small bag is used in combination with the bag main body to increase the expandability of the backpack volume and facilitate the classification and retrieval of items. The bag main body can be used alone , can also be used in combination with a small bag, and has a wide range of applications.

(2) Each small bag can be used to classify and place items. After storing the items, insert the buckle into the slot, and the small bag can be detachably installed on the main body of the bag. When you need to take out the items, take the small bag off the main body of the bag It is very convenient to use; multiple small bags can be used in combination, which increases the volume expansion of the backpack.

(3) A card sleeve is designed on the backpack cover, and the buckle on the main body of the bag is stuck in the card sleeve of the backpack cover to fix the backpack cover, and finally the small bag is fastened to the back of the bag main body to increase stability. Avoid the small bag from falling, convenient to use.

(4) Set up a reinforced support frame, which can avoid the deformation of the main body of the bag, withstand greater external impact, and play a better role in protecting the items in the main body of the bag, and the reinforced support frame is made of aluminum alloy, which can not only play a better role Good protection, but also can reduce the weight of the whole bag.

(5) The design of the cushioning layer can buffer the items in the bag main body and provide better protection for the items in the bag main body, especially for some fragile items, the effect is very good.

Description of drawings

Fig. 1 is a schematic diagram of backpack structure;

Fig. 2 is a left view of the backpack in Fig. 1 after the backpack cover is removed;

Fig. 3 is a schematic diagram after disassembling the packet in Fig. 2;

Fig. 4 is the structural representation of the first packet;

Fig. 5 is the structural representation of the second packet;

Fig. 6 is the structural representation of the 3rd packet;

Fig. 7 is a structural schematic diagram of the buckle;

Fig. 8 is A-A sectional view among Fig. 1;

Fig. 9 is a schematic diagram of another combined use of the packet.

Detailed ways

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Example 1

As shown in FIGS. 1-8 , a backpack includes a bag main body 10 and a plurality of small bags; the plurality of small bags are detachably arranged on the bag main body 10 .

The back side of the bag main body 10 is provided with a plurality of parallel installation strips 30, and a plurality of slots are arranged between the installation strips 30 and the back side of the bag main body 10, and the small bag is provided with slots corresponding to the slots. Buckle 21, the small bag is detachably arranged on the bag main body 10 through the buckle 21 and the slot.

The bag main body 10 is provided with a knapsack cover 40 that can cover the small bag, and the two sides of the backpack cover 40 are provided with card holders 41, and the two sides of the bag main body 10 are provided with card holders corresponding to the card holders 41. Buckle 11.

Wherein, the installation strip 30 adopts an elastic stretchable material, specifically, the installation strip 30 can be fixed on the back side of the bag main body 10 through a plurality of sutures 31, and the installation strip 30 between two adjacent sutures 31 and The slots are formed between the backs of the bag main body 10; when in use, each small bag can be used to classify and place articles, and after the articles are stored, the buckle 21 is inserted in the slots, and the small bags can be detachably installed on the bag main body 10 When it is necessary to take out items, the small bag can be removed from the bag main body 10, which is very convenient to use; multiple small bags 10 can be used in combination, which increases the volume expansion of the backpack.

Specifically, in this embodiment, three small bags can be installed on the back of the bag main body 10 at the same time, and the three small bags are respectively the first small bag 51, the second small bag 52 and the third small bag 53, wherein the second small bag 52 and the third small bag 53 The sum of the lengths equals the sum of the lengths of the first small bag 51, and equals the width of the back of the bag main body 10, so that the first small bag 51, the second small bag 52 and the third small bag 53 are installed on the bag main body 10, but the small bag The combined use of the bag is not limited to the above method, as two second small bags 52 and two third small bags 53 can also be combined and hung on the back of the bag main body 10, as shown in FIG. 9 .

After the small bag is installed, the backpack cover 40 is covered on the small bag, and the buckle 11 on the bag main body 10 is stuck in the card sleeve 41 of the backpack cover 40, so that the backpack cover 40 is fixed, and finally the small bag is fastened to the bag. The back of the main body 10 increases stability and prevents the small bag from falling.

Example 2

As shown in FIGS. 1-8 , a backpack includes a bag main body 10 and a plurality of small bags; the plurality of small bags are detachably arranged on the bag main body 10 .

The back side of the bag main body 10 is provided with a plurality of parallel installation strips 30, and a plurality of slots are arranged between the installation strips 30 and the back side of the bag main body 10, and the small bag is provided with slots corresponding to the slots. Buckle 21, the small bag is detachably arranged on the bag main body 10 through the buckle 21 and the slot.

The bag main body 10 is provided with a knapsack cover 40 that can cover the small bag, and the two sides of the backpack cover 40 are provided with card holders 41, and the two sides of the bag main body 10 are provided with card holders corresponding to the card holders 41. Buckle 11.

Wherein, the installation strip 30 adopts an elastic stretchable material, specifically, the installation strip 30 can be fixed on the back side of the bag main body 10 through a plurality of sutures 31, and the installation strip 30 between two adjacent sutures 31 and The slots are formed between the backs of the bag main body 10; when in use, each small bag can be used to classify and place articles, and after the articles are stored, the buckle 21 is inserted in the slots, and the small bags can be detachably installed on the bag main body 10 When it is necessary to take out items, the small bag can be removed from the bag main body 10, which is very convenient to use; multiple small bags 10 can be used in combination, which increases the volume expansion of the backpack.

Specifically, in this embodiment, three small bags can be installed on the back of the bag main body 10 at the same time, and the three small bags are respectively the first small bag 51, the second small bag 52 and the third small bag 53, wherein the second small bag 52 and the third small bag 53 The sum of the lengths equals the sum of the lengths of the first small bag 51, and equals the width of the back of the bag main body 10, so that the first small bag 51, the second small bag 52 and the third small bag 53 are installed on the bag main body 10, but the small bag The combined use of the bag is not limited to the above method, as two second small bags 52 and two third small bags 53 can also be combined and hung on the back of the bag main body 10, as shown in FIG. 9 .

After the small bag is installed, the backpack cover 40 is covered on the small bag, and the buckle 11 on the bag main body 10 is stuck in the card sleeve 41 of the backpack cover 40, so that the backpack cover 40 is fixed, and finally the small bag is fastened to the bag. The back of the main body 10 increases stability and prevents the small bag from falling.

The buckle 21 includes a long end 211, a short end 212 and an arc portion 213, and the long end 211 and the short end 212 are respectively connected to the two ends of the arc portion 213; the outer surface of the small bag is provided with an outer interlayer 22, The long end 211 of the buckle 21 is inserted into the outer interlayer 22 , and the long end 211 is fixed on the small bag by the rivet 23 .

The short end 212 defines a through hole 212a.

There are four mounting strips 30 , which are respectively arranged in parallel on the back of the bag main body 10 .

Wherein, the long end 211 of the buckle 21 is inserted between the small bag and the outer interlayer 22, so as to be fixed by the rivet 23. During use, the short end 212 of the buckle 21 is inserted between the installation strip 30 and the bag main body 10 slit, and then the pouch is installed on the bag main body 10; during installation, each pouch can be selected for use in combination at a suitable position.

Example 3

As shown in FIGS. 1-8 , a backpack includes a bag main body 10 and a plurality of small bags; the plurality of small bags are detachably arranged on the bag main body 10 .

The back side of the bag main body 10 is provided with a plurality of parallel installation strips 30, and a plurality of slots are arranged between the installation strips 30 and the back side of the bag main body 10, and the small bag is provided with slots corresponding to the slots. Buckle 21, the small bag is detachably arranged on the bag main body 10 through the buckle 21 and the slot.

The bag main body 10 is provided with a knapsack cover 40 that can cover the small bag, and the two sides of the backpack cover 40 are provided with card holders 41, and the two sides of the bag main body 10 are provided with card holders corresponding to the card holders 41. Buckle 11.

Wherein, the installation strip 30 adopts an elastic stretchable material, specifically, the installation strip 30 can be fixed on the back side of the bag main body 10 through a plurality of sutures 31, and the installation strip 30 between two adjacent sutures 31 and The slots are formed between the backs of the bag main body 10; when in use, each small bag can be used to classify and place articles, and after the articles are stored, the buckle 21 is inserted in the slots, and the small bags can be detachably installed on the bag main body 10 When it is necessary to take out items, the small bag can be removed from the bag main body 10, which is very convenient to use; multiple small bags 10 can be used in combination, which increases the volume expansion of the backpack.

Specifically, in this embodiment, three small bags can be installed on the back of the bag main body 10 at the same time, and the three small bags are respectively the first small bag 51, the second small bag 52 and the third small bag 53, wherein the second small bag 52 and the third small bag 53 The sum of the lengths equals the sum of the lengths of the first small bag 51, and equals the width of the back of the bag main body 10, so that the first small bag 51, the second small bag 52 and the third small bag 53 are installed on the bag main body 10, but the small bag The combined use of the bag is not limited to the above method, as two second small bags 52 and two third small bags 53 can also be combined and hung on the back of the bag main body 10, as shown in FIG. 9 .

After the small bag is installed, the backpack cover 40 is covered on the small bag, and the buckle 11 on the bag main body 10 is stuck in the card sleeve 41 of the backpack cover 40, so that the backpack cover 40 is fixed, and finally the small bag is fastened to the bag. The back of the main body 10 increases stability and prevents the small bag from falling.

The buckle 21 includes a long end 211, a short end 212 and an arc portion 213, and the long end 211 and the short end 212 are respectively connected to the two ends of the arc portion 213; the outer surface of the small bag is provided with an outer interlayer 22, The long end 211 of the buckle 21 is inserted into the outer interlayer 22 , and the long end 211 is fixed on the small bag by the rivet 23 .

The short end 212 defines a through hole 212a.

There are four mounting strips 30 , which are respectively arranged in parallel on the back of the bag main body 10 .

Wherein, the long end 211 of the buckle 21 is inserted between the small bag and the outer interlayer 22, so as to be fixed by the rivet 23. During use, the short end 212 of the buckle 21 is inserted between the installation strip 30 and the bag main body 10 slit, and then the pouch is installed on the bag main body 10; during installation, each pouch can be selected for use in combination at a suitable position.

One end of the backpack cover 40 is detachably disposed on the top of the bag main body 10 through a zipper 42 .

When not installing a small bag on the bag main body 10, the backpack cover 40 can be taken off from the bag main body 10 through the slide fastener 42, which is convenient for replacement and cleaning of the backpack cover 40.

Example 4

As shown in FIGS. 1-8 , a backpack includes a bag main body 10 and a plurality of small bags; the plurality of small bags are detachably arranged on the bag main body 10 .

The back side of the bag main body 10 is provided with a plurality of parallel installation strips 30, and a plurality of slots are arranged between the installation strips 30 and the back side of the bag main body 10, and the small bag is provided with slots corresponding to the slots. Buckle 21, the small bag is detachably arranged on the bag main body 10 through the buckle 21 and the slot.

The bag main body 10 is provided with a knapsack cover 40 that can cover the small bag, and the two sides of the backpack cover 40 are provided with card holders 41, and the two sides of the bag main body 10 are provided with card holders corresponding to the card holders 41. Buckle 11.

Wherein, the installation strip 30 adopts an elastic stretchable material, specifically, the installation strip 30 can be fixed on the back side of the bag main body 10 through a plurality of sutures 31, and the installation strip 30 between two adjacent sutures 31 and The slots are formed between the backs of the bag main body 10; when in use, each small bag can be used to classify and place articles, and after the articles are stored, the buckle 21 is inserted in the slots, and the small bags can be detachably installed on the bag main body 10 When it is necessary to take out items, the small bag can be removed from the bag main body 10, which is very convenient to use; multiple small bags 10 can be used in combination, which increases the volume expansion of the backpack.

Specifically, in this embodiment, three small bags can be installed on the back of the bag main body 10 at the same time, and the three small bags are respectively the first small bag 51, the second small bag 52 and the third small bag 53, wherein the second small bag 52 and the third small bag 53 The sum of the lengths equals the sum of the lengths of the first small bag 51, and equals the width of the back of the bag main body 10, so that the first small bag 51, the second small bag 52 and the third small bag 53 are installed on the bag main body 10, but the small bag The combined use of the bag is not limited to the above method, as two second small bags 52 and two third small bags 53 can also be combined and hung on the back of the bag main body 10, as shown in FIG. 9 .

After the small bag is installed, the backpack cover 40 is covered on the small bag, and the buckle 11 on the bag main body 10 is stuck in the card sleeve 41 of the backpack cover 40, so that the backpack cover 40 is fixed, and finally the small bag is fastened to the bag. The back of the main body 10 increases stability and prevents the small bag from falling.

The buckle 21 includes a long end 211, a short end 212 and an arc portion 213, and the long end 211 and the short end 212 are respectively connected to the two ends of the arc portion 213; the outer surface of the small bag is provided with an outer interlayer 22, The long end 211 of the buckle 21 is inserted into the outer interlayer 22 , and the long end 211 is fixed on the small bag by the rivet 23 .

The short end 212 defines a through hole 212a.

There are four mounting strips 30 , which are respectively arranged in parallel on the back of the bag main body 10 .

Wherein, the long end 211 of the buckle 21 is inserted between the small bag and the outer interlayer 22, so as to be fixed by the rivet 23. During use, the short end 212 of the buckle 21 is inserted between the installation strip 30 and the bag main body 10 slit, and then the pouch is installed on the bag main body 10; during installation, each pouch can be selected for use in combination at a suitable position.

One end of the backpack cover 40 is detachably disposed on the top of the bag main body 10 through a zipper 42 .

When not installing a small bag on the bag main body 10, the backpack cover 40 can be taken off from the bag main body 10 through the slide fastener 42, which is convenient for replacement and cleaning of the backpack cover 40.

The bag main body 10 is a sandwich structure, and a reinforcing support frame 12 is detachably arranged in the sandwich.

The reinforcement support frame 12 is provided to prevent the bag main body 10 from deforming, to withstand greater external impact, and to better protect the articles in the bag main body 10 .

The reinforced support frame 12 is made of aluminum alloy.

Aluminum alloy is light in weight and high in strength, and the reinforced support frame 12 is made of aluminum alloy, which can not only play a better protective role, but also reduce the weight of the entire schoolbag.

Example 5

As shown in FIGS. 1-8 , a backpack includes a bag main body 10 and a plurality of small bags; the plurality of small bags are detachably arranged on the bag main body 10 .

The back side of the bag main body 10 is provided with a plurality of parallel installation strips 30, and a plurality of slots are arranged between the installation strips 30 and the back side of the bag main body 10, and the small bag is provided with slots corresponding to the slots. Buckle 21, the small bag is detachably arranged on the bag main body 10 through the buckle 21 and the slot.

The bag main body 10 is provided with a knapsack cover 40 that can cover the small bag, and the two sides of the backpack cover 40 are provided with card holders 41, and the two sides of the bag main body 10 are provided with card holders corresponding to the card holders 41. Buckle 11.

Wherein, the installation strip 30 adopts an elastic stretchable material, specifically, the installation strip 30 can be fixed on the back side of the bag main body 10 through a plurality of sutures 31, and the installation strip 30 between two adjacent sutures 31 and The slots are formed between the backs of the bag main body 10; when in use, each small bag can be used to classify and place articles, and after the articles are stored, the buckle 21 is inserted in the slots, and the small bags can be detachably installed on the bag main body 10 When it is necessary to take out items, the small bag can be removed from the bag main body 10, which is very convenient to use; multiple small bags 10 can be used in combination, which increases the volume expansion of the backpack.

Specifically, in this embodiment, three small bags can be installed on the back of the bag main body 10 at the same time, and the three small bags are respectively the first small bag 51, the second small bag 52 and the third small bag 53, wherein the second small bag 52 and the third small bag 53 The sum of the lengths equals the sum of the lengths of the first small bag 51, and equals the width of the back of the bag main body 10, so that the first small bag 51, the second small bag 52 and the third small bag 53 are installed on the bag main body 10, but the small bag The combined use of the bag is not limited to the above method, as two second small bags 52 and two third small bags 53 can also be combined and hung on the back of the bag main body 10, as shown in FIG. 9 .

After the small bag is installed, the backpack cover 40 is covered on the small bag, and the buckle 11 on the bag main body 10 is stuck in the card sleeve 41 of the backpack cover 40, so that the backpack cover 40 is fixed, and finally the small bag is fastened to the bag. The back of the main body 10 increases stability and prevents the small bag from falling.

The buckle 21 includes a long end 211, a short end 212 and an arc portion 213, and the long end 211 and the short end 212 are respectively connected to the two ends of the arc portion 213; the outer surface of the small bag is provided with an outer interlayer 22, The long end 211 of the buckle 21 is inserted into the outer interlayer 22 , and the long end 211 is fixed on the small bag by the rivet 23 .

The short end 212 defines a through hole 212a.

There are four mounting strips 30 , which are respectively arranged in parallel on the back of the bag main body 10 .

Wherein, the long end 211 of the buckle 21 is inserted between the small bag and the outer interlayer 22, so as to be fixed by the rivet 23. During use, the short end 212 of the buckle 21 is inserted between the installation strip 30 and the bag main body 10 slit, and then the pouch is installed on the bag main body 10; during installation, each pouch can be selected for use in combination at a suitable position.

One end of the backpack cover 40 is detachably disposed on the top of the bag main body 10 through a zipper 42 .

When not installing a small bag on the bag main body 10, the backpack cover 40 can be taken off from the bag main body 10 through the slide fastener 42, which is convenient for replacement and cleaning of the backpack cover 40.

The bag main body 10 is a sandwich structure, and a reinforcing support frame 12 is detachably arranged in the sandwich.

The reinforcement support frame 12 is provided to prevent the bag main body 10 from deforming, to withstand greater external impact, and to better protect the articles in the bag main body 10 .

The reinforced support frame 12 is made of aluminum alloy.

Aluminum alloy is light in weight and high in strength, and the reinforced support frame 12 is made of aluminum alloy, which can not only play a better protective role, but also reduce the weight of the entire schoolbag.

A buffer layer 13 is provided on the inner wall of the bag main body 10 .

The design of the cushioning layer 13 can buffer the articles in the bag main body 10 and better protect the articles in the bag main body 10 .

Example 6

As shown in FIGS. 1-8 , a backpack includes a bag main body 10 and a plurality of small bags; the plurality of small bags are detachably arranged on the bag main body 10 .

The back side of the bag main body 10 is provided with a plurality of parallel installation strips 30, and a plurality of slots are arranged between the installation strips 30 and the back side of the bag main body 10, and the small bag is provided with slots corresponding to the slots. Buckle 21, the small bag is detachably arranged on the bag main body 10 through the buckle 21 and the slot.

The bag main body 10 is provided with a knapsack cover 40 that can cover the small bag, and the two sides of the backpack cover 40 are provided with card holders 41, and the two sides of the bag main body 10 are provided with card holders corresponding to the card holders 41. Buckle 11.

Wherein, the installation strip 30 adopts an elastic stretchable material, specifically, the installation strip 30 can be fixed on the back side of the bag main body 10 through a plurality of sutures 31, and the installation strip 30 between two adjacent sutures 31 and The slots are formed between the backs of the bag main body 10; when in use, each small bag can be used to classify and place articles, and after the articles are stored, the buckle 21 is inserted in the slots, and the small bags can be detachably installed on the bag main body 10 When it is necessary to take out items, the small bag can be removed from the bag main body 10, which is very convenient to use; multiple small bags 10 can be used in combination, which increases the volume expansion of the backpack.

Specifically, in this embodiment, three small bags can be installed on the back of the bag main body 10 at the same time, and the three small bags are respectively the first small bag 51, the second small bag 52 and the third small bag 53, wherein the second small bag 52 and the third small bag 53 The sum of the lengths equals the sum of the lengths of the first small bag 51, and equals the width of the back of the bag main body 10, so that the first small bag 51, the second small bag 52 and the third small bag 53 are installed on the bag main body 10, but the small bag The combined use of the bag is not limited to the above method, as two second small bags 52 and two third small bags 53 can also be combined and hung on the back of the bag main body 10, as shown in FIG. 9 .

After the small bag is installed, the backpack cover 40 is covered on the small bag, and the buckle 11 on the bag main body 10 is stuck in the card sleeve 41 of the backpack cover 40, so that the backpack cover 40 is fixed, and finally the small bag is fastened to the bag. The back of the main body 10 increases stability and prevents the small bag from falling.

The buckle 21 includes a long end 211, a short end 212 and an arc portion 213, and the long end 211 and the short end 212 are respectively connected to the two ends of the arc portion 213; the outer surface of the small bag is provided with an outer interlayer 22, The long end 211 of the buckle 21 is inserted into the outer interlayer 22 , and the long end 211 is fixed on the small bag by the rivet 23 .

The short end 212 defines a through hole 212a.

There are four mounting strips 30 , which are respectively arranged in parallel on the back of the bag main body 10 .

Wherein, the long end 211 of the buckle 21 is inserted between the small bag and the outer interlayer 22, so as to be fixed by the rivet 23. During use, the short end 212 of the buckle 21 is inserted between the installation strip 30 and the bag main body 10 slit, and then the pouch is installed on the bag main body 10; during installation, each pouch can be selected for use in combination at a suitable position.

One end of the backpack cover 40 is detachably disposed on the top of the bag main body 10 through a zipper 42 .

When not installing a small bag on the bag main body 10, the backpack cover 40 can be taken off from the bag main body 10 through the slide fastener 42, which is convenient for replacement and cleaning of the backpack cover 40.

The bag main body 10 is a sandwich structure, and a reinforcing support frame 12 is detachably arranged in the sandwich.

The reinforcement support frame 12 is provided to prevent the bag main body 10 from deforming, to withstand greater external impact, and to better protect the articles in the bag main body 10 .

The reinforced support frame 12 is made of aluminum alloy.

Aluminum alloy is light in weight and high in strength, and the reinforced support frame 12 is made of aluminum alloy, which can not only play a better protective role, but also reduce the weight of the entire schoolbag.

A buffer layer 13 is provided on the inner wall of the bag main body 10 .

The design of the cushioning layer 13 can buffer the articles in the bag main body 10 and better protect the articles in the bag main body 10 .

The front of the bag main body 10 is provided with a strap 14, and the strap 14 is provided with a storage interlayer.

The storage interlayer can be used to store all kinds of cards, or wallets, etc., which is very convenient to use.

The above-mentioned embodiments only express the specific implementation manner of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (10)

1. A backpack, characterized in that it comprises a bag main body and a plurality of small bags; the plurality of small bags are detachably arranged on the bag main body. 2. The backpack according to claim 1, characterized in that: the back of the bag main body is provided with a plurality of parallel installation strips, and a plurality of slots are arranged between the installation strips and the back of the bag main body, so that The small bag is provided with a buckle corresponding to the slit, and the small bag is detachably arranged on the main body of the bag through the buckle and the slit; the main body of the bag is provided with a backpack cover that can cover the small bag, and the backpack cover There are ferrules on both sides of the bag body, and buckles corresponding to the ferrules are arranged on both sides of the main body of the bag. 3. The backpack according to claim 2, wherein the buckle includes a long end, a short end and an arc portion, and the long end and the short end are respectively connected to the two ends of the arc portion; The side is provided with an outer interlayer, the long end of the buckle is inserted into the outer interlayer, and the long end is fixed on the small bag by a rivet. 4. The backpack according to claim 3, characterized in that: the short end is provided with a through hole. 5. The backpack according to any one of claims 2-3, characterized in that there are four installation straps, which are respectively arranged in parallel on the back of the bag main body. 6. The backpack according to claim 2, wherein one end of the backpack cover is detachably arranged on the top of the bag main body through a zipper. 7. The backpack according to claim 1, characterized in that: the bag main body is a sandwich structure, and a reinforced support frame is detachably provided in the sandwich. 8. The backpack according to claim 7, wherein the reinforced support frame is made of aluminum alloy, polypropylene or polyethylene. 9. The backpack according to claim 1, wherein a cushioning layer is provided on the inner wall of the bag main body. 10 . The backpack according to claim 1 , wherein a strap is provided on the front of the bag main body, and a storage interlayer is provided inside the strap. 11 .