Anti-theft backpack with strap length convenient to adjust

Abstract

The utility model relates to the technical field of backpack, and discloses an anti-theft type backpack convenient for adjusting the length of straps, which comprises a backpack main body, the outer wall of the backpack main body is provided with a strap component, the edge of a top opening of the backpack main body is provided with an opening zipper, the opening zipper is connected with a zipper head in a sliding manner, and the zipper head is provided with a zipper strip. A pull handle is movably connected to the outer side of the zipper head through a rivet, a through mounting through groove is formed in the inner wall of the pull handle, and a fixing ring is fixedly connected to the outer side of the backpack body. The anti-theft backpack with the strap length convenient to adjust is provided with the opening zipper, the zipper head, the pull handle, the mounting through groove, the fixing ring, the mounting ring and the coded lock, a lock hook on the coded lock penetrates through the mounting through groove in the pull handle and then is locked, and sliding of the zipper head on the opening zipper can be effectively limited; other people are prevented from unzipping the zipper when a user does not know the zipper, so that the anti-theft performance of the backpack is enhanced, and the safety of articles in the backpack is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of backpack technology, specifically to an anti-theft backpack with adjustable shoulder strap length. Background Technology

[0002] Backpacks are widely used in daily life, study and work. They are loved by people for their ability to free up their hands, and are suitable for various fields such as leisure, commuting and travel due to the different material properties.

[0003] The prior art patent document CN219845480U discloses a backpack with a double layer. The PVC waterproof layer and conical rubber feet at the bottom of the double layer can isolate ground moisture and prevent it from entering the backpack and affecting the items inside. The double layer contains a desiccant that can absorb moisture from the inside of the backpack through the breathable layer, keeping the inside of the backpack dry.

[0004] While the aforementioned existing technologies ensure a dry environment for the items inside the bag, these backpacks have some shortcomings in actual use. Firstly, they lack effective anti-theft measures, relying solely on ordinary zipper closures, which can be easily opened by others without the user's knowledge, leading to the theft of items and posing a significant security risk. Secondly, the strap length adjustment method is not convenient enough. Therefore, we need an anti-theft backpack with easily adjustable strap length. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-theft backpack with an adjustable shoulder strap length, in order to solve the problem mentioned in the background art that there is a lack of effective anti-theft measures, and that relying solely on ordinary zipper closure makes it easy for others to open the bag without the user's knowledge, leading to the theft of items inside and posing a significant security risk.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an anti-theft backpack with adjustable shoulder strap length, including a backpack body, a shoulder strap assembly on the outer wall of the backpack body, and an opening zipper on the top opening edge of the backpack body. A zipper head is slidably connected to the opening zipper, and a pull handle is movably connected to the outer side of the zipper head by a rivet. A through mounting groove is opened on the inner wall of the pull handle. A fixing ring is fixedly connected to the outer side of the backpack body, and an mounting ring passes through the outer wall of the fixing ring. A combination lock is welded to the outer wall of the mounting ring.

[0007] The shoulder strap assembly includes two symmetrically arranged upper shoulder straps and two lower shoulder straps. One end of the upper shoulder strap is fixedly connected to the top outer side of the backpack body, and the outer wall of the upper shoulder strap is fixedly connected with Velcro, button seat, button head and Velcro in sequence along the length direction. One end of the lower shoulder strap is fixedly connected to the bottom outer side of the backpack body, and the other end of the lower shoulder strap has a shoulder strap groove.

[0008] Preferably, there are multiple button holders, and the multiple button holders are evenly spaced on the upper shoulder strap.

[0009] Preferably, the button head can be selectively engaged with any button seat.

[0010] Preferably, one end of the upper shoulder strap passes through the shoulder strap groove and is bonded to the Velcro by the Velcro tab.

[0011] Preferably, the inner side of the zipper head is provided with a groove that matches the teeth of the open zipper, and the zipper head is used to drive the teeth of the open zipper to engage or disengage.

[0012] Preferably, the outer surface of the handle is provided with an anti-slip texture.

[0013] Preferably, the locking hook on the combination lock is locked after passing through the mounting slot on the pull handle to restrict the sliding of the zipper head on the open zipper.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0015] First, this utility model is equipped with an open zipper, a zipper head, a pull handle, a mounting groove, a fixing ring, a mounting ring, and a combination lock. The combination lock locks by passing the hook through the mounting groove on the pull handle, which can effectively limit the sliding of the zipper head on the open zipper and prevent others from opening the zipper without the user's knowledge, thereby enhancing the anti-theft performance of the backpack and ensuring the safety of the items inside the bag.

[0016] Secondly, this utility model is equipped with an upper shoulder strap, a Velcro closure, a button holder, a button head, a Velcro closure for the user, a lower shoulder strap, and a shoulder strap groove. The button head can selectively fasten to any button holder. Combined with the adhesive effect of the Velcro closure for the user and the Velcro closure for the user, the length of the shoulder strap can be adjusted in multiple levels, allowing the length of the shoulder strap to be flexibly adjusted according to the user's needs, meeting diverse usage requirements. Moreover, the adjustment operation is simple, and the length of the shoulder strap is stable during use, making it less likely to loosen or fall off. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a schematic diagram of the backpack body and upper shoulder strap structure of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B;

[0021] Figure 5 This is a schematic diagram of the upper shoulder strap and Velcro structure of this utility model.

[0022] The components include: 1. Backpack body; 2. Shoulder strap assembly; 201. Top shoulder strap; 202. Velcro strap; 203. Button holder; 204. Button head; 205. Velcro strap; 206. Bottom shoulder strap; 207. Shoulder strap slot; 3. Opening zipper; 4. Zipper head; 5. Pull handle; 6. Mounting slot; 7. Fixing ring; 8. Mounting ring; 9. Combination lock. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-5 As shown, an anti-theft backpack with adjustable shoulder strap length includes a backpack body 1, a shoulder strap assembly 2 on the outer wall of the backpack body 1, and an opening zipper 3 on the top opening edge of the backpack body 1. A zipper head 4 is slidably connected to the opening zipper 3, and a pull handle 5 is movably connected to the outer side of the zipper head 4 by rivets. A through mounting groove 6 is opened on the inner wall of the pull handle 5. A fixing ring 7 is fixedly connected to the outer side of the backpack body 1, and an mounting ring 8 is passed through the outer wall of the fixing ring 7. A combination lock 9 is welded to the outer wall of the mounting ring 8.

[0025] The shoulder strap assembly 2 includes two symmetrically arranged upper shoulder straps 201 and two lower shoulder straps 206. One end of the upper shoulder strap 201 is fixedly connected to the top outer side of the backpack body 1, and the outer wall of the upper shoulder strap 201 is sequentially fixedly connected with a Velcro 202, a button seat 203, a button head 204 and a Velcro 205 along the length direction. One end of the lower shoulder strap 206 is fixedly connected to the bottom outer side of the backpack body 1, and the other end of the lower shoulder strap 206 is provided with a shoulder strap groove 207.

[0026] Through the above technical solution, the locking hook on the combination lock 9 passes through the mounting slot 6 on the pull handle 5 and locks, which can effectively limit the sliding of the zipper head 4 on the open zipper 3, preventing others from opening the zipper without the user's knowledge, thereby enhancing the anti-theft performance of the backpack and ensuring the safety of the items inside the bag; the button head 204 can selectively fasten with any button seat 203, and combined with the adhesive effect of the Velcro 205 and Velcro 202, it can realize multi-level adjustment of the shoulder strap length, so that the shoulder strap length can be flexibly adjusted according to the user's needs, meeting diverse usage needs, and the adjustment operation is simple. The shoulder strap length is stable during use and is not easy to loosen or fall off.

[0027] Specifically, there are multiple button holders 203, and the multiple button holders 203 are equally spaced on the upper shoulder strap 201.

[0028] Through the above technical solution, multiple equally spaced button holders 203 provide multiple adjustment levels for the strap length, allowing the strap length to be adjusted according to the needs of different users.

[0029] Specifically, the button head 204 can be selectively engaged with either button seat 203.

[0030] Through the above technical solution, users can fasten the button head 204 onto different button seats 203 according to their own needs and comfort, thereby achieving flexible adjustment of the strap length.

[0031] Specifically, one end of the upper shoulder strap 201 passes through the shoulder strap groove 207 and is bonded to the hook and loop fastener 202 via the hook and loop fastener 205.

[0032] The above technical solution, through the Velcro adhesive method, is not only simple and convenient to operate, but also can cooperate with the button fastening structure to further enhance the stability of the shoulder strap connection and prevent the shoulder strap from loosening during use.

[0033] Specifically, the inner side of the zipper head 4 is provided with a groove that matches the teeth of the open zipper 3, and the zipper head 4 is used to drive the teeth of the open zipper 3 to engage or disengage.

[0034] Through the above technical solution, the zipper head 4, through the cooperation of the slot and the chain teeth, can smoothly and steadily control the opening and closing of the zipper 3, ensuring the normal use of the backpack.

[0035] Specifically, the outer surface of the pull handle 5 is provided with an anti-slip texture.

[0036] Through the above technical solution, the anti-slip texture increases the friction between the user's hand and the pull handle 5, making it more convenient and effortless for the user to operate the zipper head 4, especially in wet or sweaty conditions, effectively preventing slippage.

[0037] Specifically, the locking hook on the combination lock 9 passes through the mounting slot 6 on the pull handle 5 and locks to restrict the sliding of the zipper head 4 on the open zipper 3.

[0038] Through the above technical solution, the combination lock 9 can fix the zipper head 4 at a specific position of the open zipper 3, preventing others from opening the backpack without authorization, improving the anti-theft performance of the backpack, and ensuring the safety of the user's belongings.

[0039] When using the backpack, first, to adjust the shoulder strap length, unfasten the Velcro 205 and Velcro 202, and separate the button head 204 from the currently engaged button seat 203. At this point, the upper shoulder strap 201 can slide freely within the shoulder strap groove 207. By pulling the upper shoulder strap 201 through the shoulder strap groove 207 to the appropriate length, select the appropriate button seat 203 and button head 204 to fasten, thus achieving the initial positioning of the shoulder strap length. Then, re-attach the Velcro 205 and Velcro 202, using double fastening to ensure the shoulder strap will not loosen during carrying. Multiple evenly distributed button seats 203 provide multiple adjustment positions for easy length adjustment. When it is necessary to open the backpack... When taking or placing items, the user enters the correct password to open the combination lock 9, and pulls the lock hook out of the mounting slot 6 of the handle 5. At this time, the zipper head 4 can be freely slid through the handle 5, driving the teeth of the open zipper 3 to separate, thus opening the backpack. After taking or placing items, the user pulls the handle 5 to slide the zipper head 4 to the closed position of the open zipper 3, and the lock hook of the combination lock 9 passes through the mounting slot 6 again and locks it. At this time, the zipper head 4 is restricted to a fixed position and cannot slide, effectively preventing others from opening the backpack without authorization, improving the anti-theft performance of the backpack and ensuring the safety of the items inside. This completes all the work. The contents not described in detail in this manual are existing technologies known to those skilled in the art.

[0040] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A theft-proof backpack with adjustable shoulder strap length, comprising a backpack body (1), characterized in that: The outer wall of the backpack body (1) is provided with a shoulder strap assembly (2), and the top opening edge of the backpack body (1) is provided with an opening zipper (3). A zipper head (4) is slidably connected to the opening zipper (3), and a pull handle (5) is movably connected to the outer side of the zipper head (4) by a rivet. A through mounting groove (6) is opened on the inner wall of the pull handle (5). A fixing ring (7) is fixedly connected to the outer side of the backpack body (1), and an mounting ring (8) is passed through the outer wall of the fixing ring (7). A combination lock (9) is welded to the outer wall of the mounting ring (8). The shoulder strap assembly (2) includes two symmetrically arranged upper shoulder straps (201) and two lower shoulder straps (206). One end of the upper shoulder strap (201) is fixedly connected to the top outer side of the backpack body (1), and the outer wall of the upper shoulder strap (201) is fixedly connected with Velcro (202), button seat (203), button head (204) and Velcro (205) in sequence along the length direction. One end of the lower shoulder strap (206) is fixedly connected to the bottom outer side of the backpack body (1), and the other end of the lower shoulder strap (206) is provided with a shoulder strap through groove (207).

2. The anti-theft backpack with adjustable shoulder strap length according to claim 1, characterized in that: The number of button holders (203) is multiple, and the multiple button holders (203) are equally spaced on the upper shoulder strap (201).

3. The anti-theft backpack with adjustable shoulder strap length according to claim 1, characterized in that: The button head (204) can be selectively engaged with any button seat (203).

4. The anti-theft backpack with adjustable shoulder strap length according to claim 1, characterized in that: One end of the upper shoulder strap (201) passes through the shoulder strap groove (207) and is bonded to the Velcro (202) via the Velcro tab (205).

5. The anti-theft backpack with adjustable shoulder strap length according to claim 1, characterized in that: The inner side of the zipper head (4) is provided with a groove that matches the teeth of the open zipper (3), and the zipper head (4) is used to drive the teeth of the open zipper (3) to engage or disengage.

6. The anti-theft backpack with adjustable shoulder strap length according to claim 1, characterized in that: The outer surface of the handle (5) is provided with an anti-slip texture.

7. The anti-theft backpack with adjustable shoulder strap length according to claim 1, characterized in that: The locking hook on the combination lock (9) is locked after passing through the mounting slot (6) on the pull handle (5) to restrict the sliding of the zipper head (4) on the open zipper (3).

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