Backpack with form switching structure

Abstract

The utility model relates to the technical field of articles for daily use, and discloses a knapsack with a form switching structure, which comprises a knapsack sleeve, the inner surface of the knapsack sleeve is provided with a knapsack containing cavity and a connecting sleeve, the outer surface of the knapsack sleeve is provided with a zipper groove I, the inner surface of the knapsack sleeve is fixedly provided with a telescopic pull rod and a baffle block, and the telescopic pull rod is provided with a zipper groove II. A fixing sleeve, a female buckle and a connecting sleeve are fixedly installed on the outer surface of the backpack sleeve, rolling wheels are rotatably installed on the inner surface of the fixing sleeve, and a shielding sleeve is arranged at the other end, away from the backpack containing cavity, of the backpack sleeve through a zipper. According to the backpack with the form switching structure, the telescopic pull rod is pulled out of the first zipper groove and adjusted to the proper length, articles are placed in the back containing cavity, the through groove in the second lining and the second zipper groove can be used for arranging the articles, interference with the pull rod is avoided, and the backpack can be dragged like a luggage box due to the design of the telescopic pull rod; the backpack can be conveniently and easily moved without being carried on the back, and the burden of the shoulders is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, in particular to a backpack with a form switching structure. Background Art

[0002] In modern life, people's travel scenarios are becoming increasingly diverse, including daily commuting, short trips, outdoor sports, business trips, etc. Different travel scenarios have different requirements for the function and form of backpacks. For example, during daily commuting, people may want the backpack to be small and light, easy to carry and store, and able to conveniently place laptops, documents, wallets and other items; when doing outdoor sports, the backpack may need a larger capacity to carry camping equipment, sports equipment, etc. At the same time, the backpack is also required to have good stability and comfort to adapt to long-term carrying and complex terrain environments. In business trip scenarios, more emphasis is placed on the professionalism of the backpack and the protection of valuables, such as keeping suits flat and protecting electronic devices.

[0003] China Utility Model Patent Publication No.: CN 218588463 U, discloses: a backpack, which provides two locations for taking and placing items, and can take and place items not only from the first opening but also from the second opening. Taking and placing items from the second opening is mainly when the backpack is in the second use form, and it is more convenient to take and place items from the second opening, and different items can be placed respectively through the first accommodating area, the second accommodating area, the third accommodating area, and the fourth accommodating area, but the backpack, although the storage capacity of the entire backpack is increased by various accommodating areas, does not have a multi-state switching design, which easily leads to the overall practicality of the entire backpack being poor during use, and is not convenient for popularization and use. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a backpack with a form switching structure, which can effectively solve the problem that although the storage capacity of the entire backpack is increased by various accommodating areas in the prior art, the multi-state switching design is not performed, which easily leads to the overall practicality of the entire backpack being poor during use and not being convenient for promotion and use.

[0005] The technical solution adopted by the present utility model is: a backpack with a form switching structure, comprising a backpack cover, the inner surface of the backpack cover is provided with a back containing cavity and a connecting cover, the outer surface of the backpack cover is provided with a zipper groove 1, the inner surface of the backpack cover is fixedly installed with a retractable pull rod and a block, the outer surface of the backpack cover is fixedly installed with a fixing cover, a female buckle and a connecting cover, a roller is rotatably installed on the inner surface of the fixing cover, the other end of the backpack cover away from the back containing cavity is provided with a shielding cover through a zipper, the shielding cover is folded and provided with a hidden lining at one end close to the backpack cover, a sub-buckle adapted to the female buckle is fixedly installed on the outer surface of the hidden lining, a shoulder strap assembly is provided between the backpack cover and the shielding cover, the inner surface of the backpack cover is fixedly installed with a connecting cover 1, the other end of the connecting cover away from the backpack cover is provided with a connecting cover 2, and the backpack cover is provided with a draw hook close to the shielding cover.

[0006] Preferably, the shoulder strap assembly includes a limiting sleeve and a shoulder strap, a fixing belt is fixedly installed on the outer surface of the shoulder strap, a sliding buckle is slidably connected to the outer surface of the fixing belt, and the shoulder strap assembly is provided with two identical ones and are symmetrically distributed about the center line of the backpack sleeve.

[0007] Through the above technical solution, the symmetrically distributed shoulder strap components can make the backpack bear the force evenly, reduce the pressure on the shoulders, and the sliding buckle can adjust the width, making it convenient for users of different body shapes to adjust according to their own conditions, thereby improving the comfort and applicability of the backpack.

[0008] Preferably, a strap is fixedly installed on the outer surface of the sliding buckle, a fixing buckle and a connecting buckle are fixedly installed on the other end of the strap away from the sliding buckle, and a connecting strap adapted to the connecting sleeve is fixedly installed on the other end of the fixing belt away from the limiting sleeve.

[0009] Through the above technical solution, the connecting belt can be connected to the connecting sleeve to realize the switching of the overall backpack state. The subsequent design of the straps, fixing buckles and connecting buckles increases the functionality and flexibility of the backpack, and can also realize the connection between the two limit sleeves.

[0010] Preferably, the retractable pull rod is adapted to the zipper slot 1, the inner surface of the backpack containing cavity is provided with a lining 2 located at the end of the retractable pull rod away from the backpack cover, the outer surface of the lining 2 is provided with a through groove, and a zipper slot 2 is provided between the two linings 2.

[0011] Through the above technical solution, when the pull rod function needs to be used, the retractable pull rod is pulled out from the zipper slot one and adjusted to an appropriate length, and the items are placed in the backpack cavity. The through groove and zipper slot two on the lining two can be used to organize the items to avoid interference with the pull rod. The design of the retractable pull rod allows the backpack to be dragged like a suitcase, making it easy to move the backpack when it is not needed, reducing the burden on the shoulders. The design of the lining two, the through groove and the zipper slot two can reasonably plan the internal space of the backpack, making the placement of items more orderly, while avoiding damage to the items caused by the movement of the pull rod.

[0012] Preferably, a limiting belt is fixedly installed on the inner surface of the backpack cover, and a buckle is fixedly installed on the other end of the limiting belt away from the backpack cover.

[0013] Through the above technical solution, when switched to the suitcase state, the items that need to be fixed can be placed in the appropriate position, and the limiting belt can be used to wrap around the items and fasten the buckles to fix the items in the backpack. The limiting belt and buckle can effectively fix the items in the backpack to prevent the items from colliding or being damaged during the shaking or movement of the backpack, especially for some valuable or fragile items, which can provide better protection.

[0014] Preferably, the inner surface of the backpack cavity is provided with an inner lining 1 located between the retractable pull rod and the backpack cover, and the outer surface of the inner lining 1 is provided with a Velcro connected to another inner lining 1.

[0015] Through the above technical solution, the items are placed in the area between the retractable pull rod and the backpack cover in the backpack cavity, and the two inner liners are stuck together with Velcro to wrap and fix the items. The design of the inner liner and the Velcro can further subdivide the space of the backpack cavity, better fix and protect the items placed in this area, and facilitate use.

[0016] Preferably, the outer surface of the backpack cover is provided with a protective layer, a second cavity and a third cavity, the protective layer and the backpack cover together constitute the first cavity, the second cavity and the third cavity are smaller than the capacity of the backpack cavity

[0017] Through the above technical solution, small items that are frequently used or need to be quickly accessed are placed in the first cavity, second cavity or third cavity formed by the protective layer and the backpack cover according to the nature and frequency of use of the items. The design of multiple outer surface cavities with different capacities increases the storage function of the backpack, makes it easier for users to classify and store items, improves the efficiency of accessing items, and also facilitates increasing the capacity of the overall device.

[0018] Compared with the prior art, the present invention provides a backpack with a form switching structure, which has the following beneficial effects:

[0019] 1. When the backpack with a form-switching structure needs to use the drawbar function, the retractable drawbar is pulled out from the first zipper slot and adjusted to an appropriate length. Items are placed in the backpack cavity. The through slot on the second inner lining and the second zipper slot can be used to organize the items to avoid interference with the drawbar. The design of the retractable drawbar allows the backpack to be dragged like a suitcase, making it easy to move the backpack when it is not needed and reducing the burden on the shoulders. The design of the second inner lining, the through slot and the second zipper slot can rationally organize the internal space of the backpack, making the placement of items more orderly while preventing damage to the items caused by the movement of the drawbar.

[0020] 2. This backpack with a shape-shifting structure is carried via two symmetrically distributed shoulder straps. The fixed straps on the shoulder straps work in conjunction with the sliding buckle to adjust the strap length, ensuring even load distribution and reducing shoulder pressure. This adapts to users of varying body shapes, improving comfort and usability. Furthermore, the straps, fixed buckles, and connectors on the sliding buckle enhance the backpack's functionality and flexibility, such as securing items or connecting other accessories. The connector straps at the ends of the fixed straps can be connected to the connector sleeve to help secure the backpack. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the installation structure of the shoulder strap assembly of the utility model Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the first form of the utility model;

[0025] Figure 5 This is a schematic diagram of the second three-dimensional structure of the utility model Figure 1 ;

[0026] Figure 6 This is a schematic diagram of the second three-dimensional structure of the utility model Figure 2 ;

[0027] Figure 7 This is a schematic diagram of the second three-dimensional structure of the utility model Figure 3 ;

[0028] Figure 8 This is a schematic diagram of a three-dimensional structure of the inner lining of the utility model;

[0029] Figure 9 This is a schematic diagram of the second three-dimensional structure of the inner lining of the present invention.

[0030] Among them: 1. Backpack cover; 2. Backpack cavity; 3. Zipper slot one; 4. Retractable pull rod; 5. Stopper; 6. Liner one; 7. Velcro; 8. Liner two; 9. Through slot; 10. Zipper slot two; 11. Limiting belt; 12. Buckle; 13. Fixed cover; 14. Roller; 15. Mother buckle; 16. Blocking cover; 17. Hidden lining; 18. Sub-buckle; 19. Connecting cover 20. Shoulder strap assembly; 2001. Limiting cover; 2002. Shoulder strap; 2003. Fixed belt; 2004. Sliding buckle; 2005. Strap; 2006. Fixed buckle; 2007. Connecting buckle; 2008. Connecting belt; 21. Protective layer; 22. Second cavity; 23. Third cavity; 24. Connecting cover one; 25. Connecting cover two; 26. Draw hook. DETAILED DESCRIPTION

[0031] 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.

[0032] Example 1: Figure 1-9 As shown, the utility model provides a backpack with a form switching structure, including a backpack cover 1, the inner surface of the backpack cover 1 is provided with a back containing cavity 2 and a connecting cover 19, the outer surface of the backpack cover 1 is provided with a zipper groove 3, the inner surface of the backpack cover 1 is fixedly installed with a retractable pull rod 4 and a stopper 5, the outer surface of the backpack cover 1 is fixedly installed with a fixing cover 13, a female buckle 15 and a connecting cover 19, the inner surface of the fixing cover 13 is rotatably installed with a roller 14, the other end of the backpack cover 1 away from the back containing cavity 2 is provided with a shielding cover 16 through a zipper, the shielding cover 16 is folded and provided with a hidden lining 17 at one end close to the backpack cover 1, and a sub-buckle 18 compatible with the female buckle 15 is fixedly installed on the outer surface of the hidden lining 17, a shoulder strap assembly 20 is provided between the backpack cover 1 and the shielding cover 16, a connecting cover 24 is fixedly installed on the inner surface of the backpack cover 1, a connecting cover 25 is provided at the other end of the connecting cover 24 away from the backpack cover 1, and a draw hook 26 is provided near the shielding cover 16.

[0033] Specifically, the shoulder strap assembly 20 includes a limiting sleeve 2001 and a shoulder strap 2002. A fixing strap 2003 is fixedly installed on the outer surface of the shoulder strap 2002. A sliding buckle 2004 is slidably connected to the outer surface of the fixing strap 2003. The shoulder strap assembly 20 is provided with two identical ones and is symmetrically distributed about the center line of the backpack sleeve 1. The advantage is that the symmetrically distributed shoulder strap assembly 20 can make the backpack bear the force evenly and reduce the shoulder pressure. In addition, the sliding buckle 2004 can adjust the width, which is convenient for users of different body shapes to adjust according to their own conditions, thereby improving the comfort and applicability of the backpack.

[0034] Specifically, a strap 2005 is fixedly installed on the outer surface of the sliding buckle 2004, and a fixing buckle 2006 and a connecting buckle 2007 are fixedly installed on the other end of the strap 2005 away from the sliding buckle 2004. A connecting strap 2008 that is compatible with the connecting sleeve 19 is fixedly installed on the other end of the fixing strap 2003 away from the limiting sleeve 2001. The advantage is that the connecting strap 2008 can be connected to the connecting sleeve 19 to realize the switching of the overall backpack state. Subsequently, the design of the strap 2005, the fixing buckle 2006 and the connecting buckle 2007 increases the functionality and flexibility of the backpack, and can also realize the connection between the two limiting sleeves 2001.

[0035] Specifically, the retractable pull rod 4 is adapted to the zipper slot 3, and the inner surface of the back containing cavity 2 is provided with an inner lining 8 located at the end of the retractable pull rod 4 away from the backpack cover 1, and a through slot 9 is provided on the outer surface of the inner lining 8, and a zipper slot 10 is provided between the two inner liners 8. The advantage is that when the pull rod function needs to be used, the retractable pull rod 4 is pulled out from the zipper slot 3 and adjusted to a suitable length, and the items are placed in the back containing cavity 2. The through slot 9 and the zipper slot 10 on the inner lining 8 can be used to organize the items to avoid interference with the pull rod. The design of the retractable pull rod 4 allows the backpack to be dragged like a suitcase, which is convenient for moving the backpack easily when it is not needed, such as walking a long distance on a flat road, thereby reducing the burden on the shoulders. The design of the inner lining 8, the through slot 9 and the zipper slot 10 can reasonably plan the internal space of the backpack, so that the items can be placed more orderly, while avoiding damage to the items caused by the movement of the pull rod.

[0036] Example 2: Figure 2-9 As shown, as an improvement to the previous embodiment.

[0037] Specifically, a limiting belt 11 is fixedly installed on the inner surface of the backpack cover 1, and a buckle 12 is fixedly installed on the other end of the limiting belt 11 away from the backpack cover 1. The advantage is that when it is switched to the suitcase state, the items that need to be fixed, such as computers, books, etc., can be placed in a suitable position, and the limiting belt 11 can be used to pass around the items and fasten the buckle 12 to fix the items in the backpack. The limiting belt 11 and the buckle 12 can effectively fix the items in the backpack to prevent the items from colliding or being damaged during the shaking or movement of the backpack, especially for some valuable or fragile items, and can provide better protection.

[0038] Specifically, the inner surface of the back containing cavity 2 is provided with a lining 6 located between the retractable rod 4 and the backpack cover 1, and the outer surface of the lining 6 is provided with a Velcro 7 connected to another lining 6. The advantage is that the items are placed in the area between the retractable rod 4 and the backpack cover 1 in the back containing cavity 2, and the two linings 6 are pasted together by the Velcro 7 to wrap and fix the items. The design of the lining 6 and the Velcro 7 can further subdivide the space of the back containing cavity 2, better fix and protect the items placed in this area, and can be conveniently used.

[0039] Specifically, the outer surface of the backpack cover 1 is provided with a protective layer 21, a second cavity 22 and a third cavity 23. The protective layer 21 and the backpack cover 1 together constitute the first cavity, and the second cavity 22 and the third cavity 23 are smaller than the capacity of the backpack cover cavity 2. The advantage is that, according to the nature and frequency of use of the items, small items that are frequently used or need to be quickly accessed are placed in the first cavity, the second cavity 22 or the third cavity 23 formed by the protective layer 21 and the backpack cover 1 respectively. The design of multiple outer surface cavities with different capacities increases the storage function of the backpack, makes it convenient for users to classify and store items, improves the efficiency of taking items, and also facilitates increasing the capacity of the overall device.

[0040] Working principle: When in use, the backpack is carried by means of two symmetrically distributed shoulder strap assemblies 20. The fixing strap 2003 on the shoulder strap 2002 cooperates with the sliding buckle 2004 to adjust the length of the shoulder strap 2002, so that the backpack is evenly stressed, the shoulder pressure is reduced, and it is suitable for users of different body shapes, thereby improving comfort and applicability. At the same time, the strap 2005, the fixing buckle 2006 and the connecting buckle 2007 on the sliding buckle 2004 can increase the functionality and flexibility of the backpack, such as fixing items or connecting other accessories. The connecting strap 2008 at the end of the fixing strap 2003 can be connected to the connecting sleeve 19 to assist in fixing the backpack state. Then the lining 17 is hidden to cover the roller 14, and the sub-buckle 18 and the mother buckle 15 are fitted together to hide the roller 14 to realize the backpack state. When it needs to be dragged, the pull rod is pulled out from the zipper slot 3 adapted to the retractable pull rod 4 and the length is adjusted. There are through grooves 9 and zipper grooves 10 on the lining 8 at the end of the retractable pull rod 4 in the cavity 2, which are convenient for organizing items and avoiding interference with the pull rod. This design allows the backpack to be dragged like a suitcase, reducing the burden on the shoulders. The limiting belt 11 and buckle 12 in the backpack cover 1 can fix items in the dragging state to prevent shaking, collision and damage, especially for valuable or fragile items. The lining 6 between the retractable pull rod 4 in the backpack cavity 2 and the backpack cover 1 is adhered by Velcro 7, which can subdivide the space and wrap and fix the items in the area to further ensure the safety of the items. The outer surface of the backpack cover 1 has a protective layer 21 and the first cavity, second cavity 22 and third cavity 23 formed by the backpack cover 1. Small items that are frequently used or need to be quickly accessed can be classified and stored according to the nature of the items and the frequency of use, thereby improving the storage function and access efficiency and increasing the overall capacity.

[0041] 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 with a form switching structure, comprising a backpack cover (1), characterized in that: The inner surface of the backpack cover (1) is provided with a back containing cavity (2) and a connecting sleeve (19); the outer surface of the backpack cover (1) is provided with a zipper groove (3); the inner surface of the backpack cover (1) is fixedly installed with a retractable pull rod (4) and a stopper (5); the outer surface of the backpack cover (1) is fixedly installed with a fixing sleeve (13), a female buckle (15) and a connecting sleeve (19); the inner surface of the fixing sleeve (13) is rotatably installed with a roller (14); the other end of the backpack cover (1) away from the back containing cavity (2) is provided with a shielding sleeve (16) through a zipper; A hidden lining (17) is folded and provided at one end of the shielding cover (16) close to the backpack cover (1), and a sub-buckle (18) adapted to the female buckle (15) is fixedly installed on the outer surface of the hidden lining (17). A shoulder strap assembly (20) is provided between the backpack cover (1) and the shielding cover (16). A connecting cover (24) is fixedly installed on the inner surface of the backpack cover (1), and a connecting cover (25) is provided at the other end of the connecting cover (24) away from the backpack cover (1). A draw hook (26) is provided on the backpack cover (1) close to the shielding cover (16).

2. The backpack with a form switching structure according to claim 1, characterized in that: The shoulder strap assembly (20) comprises a limiting sleeve (2001) and a shoulder strap (2002); a fixing strap (2003) is fixedly mounted on the outer surface of the shoulder strap (2002); a sliding buckle (2004) is slidably connected to the outer surface of the fixing strap (2003); and the shoulder strap assembly (20) is provided with two identical ones that are symmetrically distributed about the center line of the backpack sleeve (1).

3. The backpack with a form switching structure according to claim 2, characterized in that: A binding strap (2005) is fixedly mounted on the outer surface of the sliding buckle (2004); a fixing buckle (2006) and a connecting buckle (2007) are fixedly mounted on the other end of the binding strap (2005) away from the sliding buckle (2004); and a connecting strap (2008) adapted to the connecting sleeve (19) is fixedly mounted on the other end of the fixing strap (2003) away from the limiting sleeve (2001).

4. The backpack with a form switching structure according to claim 1, characterized in that: The retractable pull rod (4) is adapted to the zipper groove (3), and the inner surface of the backpack housing cavity (2) is provided with a lining (8) located at the end of the retractable pull rod (4) away from the backpack cover (1), and the outer surface of the lining (8) is provided with a through groove (9), and a zipper groove (10) is provided between the two linings (8).

5. The backpack with a form switching structure according to claim 1, characterized in that: A limiting belt (11) is fixedly mounted on the inner surface of the backpack cover (1), and a buckle (12) is fixedly mounted on the other end of the limiting belt (11) away from the backpack cover (1).

6. The backpack with a form switching structure according to claim 1, characterized in that: The inner surface of the backpack cavity (2) is provided with an inner lining (6) located between the telescopic pull rod (4) and the backpack cover (1), and the outer surface of the inner lining (6) is provided with a Velcro (7) connected to another inner lining (6).

7. The backpack with a form switching structure according to claim 1, characterized in that: The outer surface of the backpack cover (1) is provided with a protective layer (21), a second cavity (22) and a third cavity (23); the protective layer (21) and the backpack cover (1) together constitute a first cavity; the second cavity (22) and the third cavity (23) are smaller than the capacity of the backpack cavity (2).

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