Backpack

Abstract

The utility model relates to the technical field of storage articles and discloses a backpack which comprises a backpack body, a main zipper is arranged at the middle end of the outer surface of the backpack body, an elastic bearing structure is arranged on the back face of the backpack body, a telescopic structure is arranged on one side, close to the back face, of the backpack body and comprises telescopic cloth and a chain belt, and the telescopic cloth is connected with the backpack body. The number of the chain belts is two, the two chain belts are arranged on the two sides of the telescopic cloth respectively, and one ends of the two chain belts are close to each other and provided with pull heads. According to the backpack, by arranging the telescopic structure, pulling the pull head and winding the backpack body by a circle, the zipper teeth on the two zipper belts are meshed or opened, so that effective contraction and expansion of the backpack body are achieved, the aluminum alloy support guide rails and the elastic connecting belts are arranged on the back, and when the backpack body vibrates up and down, the zipper teeth on the two zipper belts are separated from each other. The elastic connecting belt ascends and descends up and down on the U-shaped aluminum alloy support guide rail under the action of external force, so that the comfort and the burden reducing effect of the back are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of storage articles, in particular to a backpack. Background Art

[0002] A backpack is a bag that can be carried on the back and can be used for daily commuting, traveling, and sports and fitness. It is used to carry personal items such as clothes, books, electronic devices, etc.

[0003] Since the existing backpack has a relatively simple structure and function, it is impossible to adjust the volume of the backpack in time according to the number of books or the volume of other items that need to be put into the backpack. The scope of application is small, and the position of the items in the backpack cannot be guaranteed to be relatively stable. The existing backpack is thinner on the side close to the shoulder strap and has poor elasticity. When the items in the backpack are relatively hard, the corners of the items are easy to hit the user's back, resulting in poor comfort. Therefore, it is necessary to provide a backpack to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a backpack that solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: a backpack, comprising a backpack body, a main zipper provided at the middle end of the outer surface of the backpack body, an elastic carrying structure provided at the back of the backpack body, and a telescopic structure provided at the side of the backpack body close to the back;

[0006] The elastic carrying structure includes shoulder straps and an elastic back pad, the lower end of the elastic back pad is connected to the backpack body, and the shoulder straps are located on both sides of the elastic back pad;

[0007] The telescopic structure includes a telescopic cloth and a chain belt. The telescopic cloth is connected to the backpack body. Two chain belts are provided, and the two chain belts are respectively provided on both sides of the telescopic cloth.

[0008] Preferably, both sides of the back of the backpack body are provided with hook surfaces of adhesive strips, and both sides of the side of the elastic back pad close to the backpack body are provided with velvet surfaces of adhesive strips that cooperate with the hook surfaces of adhesive strips.

[0009] Preferably, an upper fixing strap is provided at the upper end of the back side of the backpack main body, a lower fixing strap is provided at the lower end of the back side of the backpack main body, an aluminum alloy bracket fixing strap is provided at the back side of the backpack main body and above the lower fixing strap, and a U-shaped aluminum alloy bracket guide rail is provided at the back side of the backpack main body through the aluminum alloy bracket fixing strap.

[0010] Preferably, the middle end of the shoulder strap is a Y-shaped connecting pad, and the Y-shaped connecting pad is arranged at the upper end of the back of the backpack body and located on the inner side of the elastic back pad, and an aluminum alloy bracket is arranged in the Y-shaped connecting pad.

[0011] Preferably, the inner side of the upper end of the Y-shaped connecting pad is connected to the upper fixing belt through an inner belt, and the lower end of the Y-shaped connecting pad is provided with an elastic connecting belt, and the lower end of the elastic connecting belt passes through the bottom of the U-shaped aluminum alloy bracket guide rail.

[0012] Preferably, the lower end of the U-shaped aluminum alloy bracket guide rail is fixed by a lower fixing belt, and the upper end of the U-shaped aluminum alloy bracket guide rail is connected to the back of the Y-shaped connecting pad.

[0013] Preferably, one ends of the two chain belts are close to each other and are provided with pull heads.

[0014] Preferably, side pockets are provided at the lower ends of both sides of the backpack body.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The backpack is provided with an elastic back pad. When the hook surface of the sticky cloth strip is bonded to the velvet surface of the sticky cloth strip, the stability of the elastic back pad is further ensured. When the items inside the backpack body shake and hit the back of the backpacker, the elastic back pad can effectively buffer the force and ensure the comfort of the user. The elastic back pad can be opened by pulling outward and can be washed separately. When the backpack body vibrates up and down, the elastic connecting belt on the U-shaped aluminum alloy bracket rises and falls under the action of external force, which can realize the elastic carrying of the user, further ensuring the comfort and burden reduction of the backpack.

[0017] 2. The backpack is provided with a telescopic structure. When the items in the backpack body are small, the slider is pulled around the backpack body, so that the chain teeth on the two chain belts engage with each other, and the telescopic cloth can be effectively folded and hidden inside the backpack body, thereby realizing the effective contraction and expansion of the backpack body, and the backpack capacity can be adjusted according to the carrying capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the schematic diagrams of the overall structure of the backpack of the utility model;

[0019] Figure 2 This is the second schematic diagram of the overall structure of the backpack of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the elastic back pad of the utility model after the upper end is opened;

[0021] Figure 4 This is a schematic diagram of the structure of the backpack of the utility model when no elastic back pad is installed on the back of the backpack body;

[0022] Figure 5 This is a schematic diagram of the back structure of the elastic back pad of the utility model;

[0023] Figure 6For this utility model Figure 2 A magnified schematic diagram of the structure at center A.

[0024] In the figure: 1. Backpack body; 101. Main zipper; 2. Side pocket; 3. Telescopic structure; 301. Telescopic fabric; 302. Chain; 303. Slider; 4. Shoulder strap; 401. Y-shaped connecting pad; 5. Elastic back pad; 501. Suede surface of adhesive strip; 6. Hook surface of adhesive strip; 7. Upper fixing strap; 701. Lower fixing strap; 8. Elastic connecting strap; 9. U-shaped aluminum alloy bracket guide rail; 10. Aluminum alloy bracket fixing strap. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-6 A backpack includes a backpack body 1, a main zipper 101 is provided at the middle end of the outer surface of the backpack body 1, an elastic carrying structure is provided on the back of the backpack body 1, and a telescopic structure 3 is provided on the side of the backpack body 1 close to the back;

[0027] The elastic carrying structure includes a shoulder strap 4 and an elastic back pad 5. The lower end of the elastic back pad 5 is connected to the backpack body 1, and the shoulder strap 4 is located on both sides of the elastic back pad 5.

[0028] The telescopic structure 3 includes a telescopic cloth 301 and a chain belt 302 . The telescopic cloth 301 is connected to the backpack body 1 . Two chain belts 302 are provided, and the two chain belts 302 are respectively provided on both sides of the telescopic cloth 301 .

[0029] Among them, both sides of the back of the backpack main body 1 are provided with sticky cloth hook surfaces 6, and both sides of the elastic back pad 5 close to the backpack main body 1 are provided with sticky cloth velvet surfaces 501 that cooperate with the sticky cloth hook surfaces 6. By providing the sticky cloth hook surfaces 6 and the sticky cloth velvet surfaces 501, the elastic back pad 5 and the backpack main body 1 can be effectively bonded. When the sticky cloth hook surfaces 6 and the sticky cloth velvet surfaces 501 are bonded to each other, the stability of the elastic back pad 5 is guaranteed. When the items inside the backpack main body 1 shake and hit the back of the backpacker, the elastic back pad 5 can effectively buffer the force and ensure the comfort of the user. The elastic back pad 5 can be opened by pulling it outward and can be washed separately.

[0030] Among them; an upper fixing strap 7 is provided at the upper end of the back of the backpack main body 1, a lower fixing strap 701 is provided at the lower end of the back of the backpack main body 1, an aluminum alloy bracket fixing strap 10 is provided on the back of the backpack main body 1 and above the lower fixing strap 701, and a U-shaped aluminum alloy bracket guide rail 9 is provided on the back of the backpack main body 1 through the aluminum alloy bracket fixing strap 10, and the middle end of the shoulder strap 4 is a Y-shaped connecting pad 401, and the Y-shaped connecting pad 401 is provided at the upper end of the back of the backpack main body 1 and located on the inner side of the elastic back pad 5, and an aluminum alloy bracket is provided inside the Y-shaped connecting pad 401. By providing the upper fixing strap 7, the Y-shaped connecting pad 401 can be effectively limited to a certain extent, and by providing the aluminum alloy bracket, the Y-shaped connecting pad 401 can be effectively supported internally.

[0031] Among them; the inner side of the upper end of the Y-shaped connecting pad 401 is connected to the upper fixing strap 7 through an inner strap, and an elastic connecting strap 8 is provided at the lower end of the Y-shaped connecting pad 401. The lower end of the elastic connecting strap 8 passes through the bottom of the U-shaped aluminum alloy bracket guide rail 9, and the lower end of the U-shaped aluminum alloy bracket guide rail 9 is fixed by the lower fixing strap 701. The upper end of the U-shaped aluminum alloy bracket guide rail 9 passes through the aluminum alloy bracket fixing strap 10 and is connected to the back of the Y-shaped connecting pad 401. The elastic connecting strap 8 and the lower end of the U-shaped aluminum alloy bracket guide rail 9 are effectively connected to the backpack body 1 through the set lower fixing strap 701. The backpack body 1 is carried on the user's back through the shoulder strap 4. When the backpack body 1 vibrates up and down, the elastic connecting strap 8 is on the U-shaped aluminum alloy bracket guide rail 9 and rises and falls under the action of external force, which can realize the user's elastic carrying, further ensuring the comfort and load-reducing effect of carrying it on the back.

[0032] Among them, one end of the two chain belts 302 is close to each other and is provided with a pull head 303, and the lower end of both sides of the backpack main body 1 is provided with a side pocket 2. When the volume of the items in the backpack main body 1 is small, the pull head 303 is pulled and circled around the backpack main body 1, so that the chain teeth on the two chain belts 302 are engaged with each other, and the retractable cloth 301 can be effectively folded and hidden inside the backpack main body 1, thereby realizing the effective contraction and expansion of the backpack main body 1, and the backpack capacity can be adjusted according to the carrying capacity.

[0033] The working principle is to adjust the internal volume of the backpack main body 1 according to the volume of the items that need to be loaded into the backpack main body 1. When the volume of the items loaded in the backpack main body 1 is small, pull the slider 303 and circle the backpack main body 1 so that the chain teeth on the two chain belts 302 engage with each other, thereby effectively folding the retractable cloth 301 and hiding it inside the backpack main body 1, thereby achieving effective contraction of the backpack main body 1 and effectively limiting the range of movement of items in the backpack main body 1.

[0034] Furthermore, by providing the adhesive cloth hook surface 6 and the adhesive cloth velvet surface 501, the elastic back pad 5 can be effectively bonded to the backpack body 1. When the adhesive cloth hook surface 6 and the adhesive cloth velvet surface 501 are bonded to each other, the stability of the elastic back pad 5 is ensured. When the items inside the backpack body 1 shake and hit the back of the backpacker, the elastic back pad 5 can effectively buffer the force and ensure the comfort of the user. The elastic back pad 5 can be opened by pulling outward and can be washed separately. The elastic connecting belt 8 is effectively connected to the backpack body 1 at the lower end of the U-shaped aluminum alloy bracket guide rail 9 through the provided lower fixing belt 701. The backpack body 1 is carried on the user's back through the shoulder strap 4. When the backpack body 1 vibrates up and down, the elastic connecting belt 8 is on the U-shaped aluminum alloy bracket guide rail 9 and rises and falls under the action of external force, which can realize the user's elastic carrying and further ensure the comfort and load-reducing effect of carrying it on the back.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A backpack, comprising a backpack body (1), wherein a main zipper (101) is provided at the middle end of the outer surface of the backpack body (1), characterized in that: The back of the backpack body (1) is provided with an elastic carrying structure, and the side of the backpack body (1) close to the back is provided with a telescopic structure (3); The elastic carrying structure comprises a shoulder strap (4) and an elastic back pad (5), the lower end of the elastic back pad (5) is connected to the backpack body (1), and the shoulder strap (4) is located on both sides of the elastic back pad (5); The telescopic structure (3) comprises a telescopic cloth (301) and a chain belt (302); the telescopic cloth (301) is connected to the backpack body (1); two chain belts (302) are provided, and the two chain belts (302) are respectively provided on both sides of the telescopic cloth (301).

2. A backpack according to claim 1, characterized in that: Both sides of the back of the backpack body (1) are provided with adhesive strip hook surfaces (6), and both sides of the elastic back pad (5) close to the backpack body (1) are provided with adhesive strip velvet surfaces (501) that cooperate with the adhesive strip hook surfaces (6).

3. A backpack according to claim 1, characterized in that: An upper fixing belt (7) is provided at the upper end of the back of the backpack main body (1), a lower fixing belt (701) is provided at the lower end of the back of the backpack main body (1), an aluminum alloy bracket fixing belt (10) is provided on the back of the backpack main body (1) and above the lower fixing belt (701), and a U-shaped aluminum alloy bracket guide rail (9) is provided on the back of the backpack main body (1) through the aluminum alloy bracket fixing belt (10).

4. A backpack according to claim 3, characterized in that: The middle end of the shoulder strap (4) is a Y-shaped connection pad (401), which is arranged at the upper end of the back of the backpack body (1) and located inside the elastic back pad (5), and an aluminum alloy bracket is arranged inside the Y-shaped connection pad (401).

5. A backpack according to claim 4, characterized in that: The inner side of the upper end of the Y-shaped connection pad (401) is connected to the upper fixing belt (7) via an inner belt, and the lower end of the Y-shaped connection pad (401) is provided with an elastic connection belt (8), and the lower end of the elastic connection belt (8) passes through the bottom of the U-shaped aluminum alloy bracket guide rail (9).

6. A backpack according to claim 5, characterized in that: The lower end of the U-shaped aluminum alloy bracket guide rail (9) is fixed by a lower fixing belt (701), and the upper end of the U-shaped aluminum alloy bracket guide rail (9) passes through the aluminum alloy bracket fixing belt (10) and is connected to the back of the Y-shaped connection pad (401).

7. A backpack according to claim 1, characterized in that: One ends of the two chain belts (302) are close to each other and are provided with pull heads (303).

8. The backpack according to claim 1, characterized in that: Side pockets (2) are provided at the lower ends of both sides of the backpack body (1).

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