Expandable anti-theft backpack

Abstract

The utility model relates to the technical field of backpack, and discloses an expandable anti-theft backpack, which comprises a backpack body, an expansion component is arranged on the front side of the backpack body, and a locking component is mounted on one side of the backpack body. According to the expandable anti-theft backpack, the assembly can be fixed to the backpack body in a sewing mode through the sewing cloth, the firmness is improved, the arranged folding bag can be unfolded, certain articles can be placed after the folding bag is unfolded, the folding bag in a folded state can be fixed through matched use of the connecting strip and the snap fastener, and the folding bag is convenient to carry. The first supporting rod can be driven to rotate through the arrangement of the rotating shaft, the second supporting rod can be rotated and unfolded through the arrangement of the hinge, in this way, some articles with hanging straps can be hung conveniently, the use space of the backpack body is further increased, the use space of the backpack body can be greatly increased through the arrangement of the assembly, and the backpack is convenient to use. And the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of backpack technology, specifically an expandable anti-theft backpack. Background Technology

[0002] A backpack is a general term for a bag that is carried on both shoulders. It is generally classified into computer backpacks, sports backpacks, military backpacks, etc. Its main feature is that it can store items inside the bag and carry them on both shoulders, freeing up the hands to carry other activities such as taking out documents or using a mobile phone while walking or exercising. Moreover, because the weight is distributed on both shoulders, compared with a single-shoulder bag or handbag, the weight of the items is distributed more evenly on the body, reducing the pressure on one side or part of the body and reducing fatigue. It is especially suitable for carrying heavy items for a long time.

[0003] The expandable anti-theft backpack is an upgraded version of the traditional backpack, integrating an expandable design with anti-theft features. It better meets the needs of modern travel for practicality and security. It is suitable for keeping your laptop and documents compact when carrying them on a daily basis, and can be expanded to carry clothes when shopping after work or on short business trips. The anti-theft design on the back prevents pickpocketing on subways and buses. The expandable anti-theft backpack solves the pain points of traditional backpacks' "fixed capacity" and "security risks" through functional integration. It is especially suitable for users who need to frequently switch between scenarios, such as commuting, traveling, and exercising. It is a practical choice that balances efficiency and security.

[0004] The prior art patent document CN204812592U discloses an anti-theft backpack. This anti-theft backpack hides the opening of the backpack on the inside, so that outsiders cannot easily open the backpack from the outside, thus improving the anti-theft performance. It also improves the backpack material by using electromagnetic shielding fabric to prevent information from being read by various advanced card reading devices, thus preventing the loss of personal information. The addition of an anti-theft hard shell can prevent the backpack from being cut by sharp objects and thus preventing the theft of items.

[0005] While the aforementioned existing technology, through concealing the backpack's opening on the inside to prevent unauthorized access and adding a hard shell to prevent theft by sharp objects, enhances its anti-theft capabilities, its limited capacity makes it unsuitable for long commutes and inconvenient for carrying numerous items, significantly reducing its practicality. Therefore, we need an expandable anti-theft backpack. Utility Model Content

[0006] The purpose of this utility model is to provide an expandable anti-theft backpack to solve the problem that the anti-theft backpacks in the aforementioned patented technology have a small capacity, making them unsuitable for long-distance commutes and inconvenient to carry many items, thus greatly reducing their practicality.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An expandable anti-theft backpack includes a backpack body, a shoulder strap fixedly connected to one side of the backpack body, an expansion component provided on the front of the backpack body, and a locking component installed on one side of the backpack body.

[0009] The expansion assembly includes a sewn fabric, a connecting strip is fixedly connected to the front of the sewn fabric, and a snap button is provided on one side of the connecting strip. A folded bag is fixedly connected to the front of the sewn fabric. A rotating shaft is provided on the front of the sewn fabric, and a first support rod is rotatably connected inside the rotating shaft. A hinge is provided on one side of the first support rod, and a second support rod is rotatably connected to one side of the hinge.

[0010] The locking assembly includes a fixing block, a sliding rod slidably connected to the inner wall of the fixing block, an adjusting block installed on the top of the sliding rod, a handle provided on the top of the adjusting block, and a fixing bolt fixedly connected to the bottom of the handle. A bolt seat is threadedly connected to the outer wall of the fixing bolt.

[0011] Preferably, the front of the backpack body is provided with a small pocket, and a zipper is installed on one side of the backpack body.

[0012] Preferably, the sewn fabric forms a fixing structure with the snap fasteners via a connecting strip, and the connecting strip is installed between the sewn fabric and the snap fasteners. The connecting strip forms a fixing structure with the folded bag via the snap fasteners.

[0013] Preferably, the sewn fabric forms a rotating structure with the first support rod via a rotating shaft, and there are two first support rods.

[0014] Preferably, the first support rod and the second support rod form a rotating structure through a hinge, and the hinge is located between the first support rod and the second support rod.

[0015] Preferably, the fixed block and the adjusting block form a sliding structure through the sliding rod, and one end of the sliding rod passes through the fixed block.

[0016] Preferably, the grip is fixed to the bolt seat by a fixing bolt, and the shape and size of the outer wall of the fixing bolt match the shape and size of the inner wall of the bolt seat.

[0017] Compared with the prior art, the beneficial effects of this utility model are: this expandable anti-theft backpack...

[0018] Firstly, this utility model includes a sewn fabric, a connecting strip, snaps, a folding bag, a rotating shaft, a first support rod, a hinge, and a second support rod. The sewn fabric allows the component to be fixed to the backpack body by sewing, increasing its sturdiness. The folding bag can be unfolded to hold items, increasing the backpack's capacity. The connecting strip and snaps work together to secure the folding bag, preventing it from unfolding unnecessarily. The rotating shaft allows the first support rod to rotate, and the hinge allows the second support rod to rotate and unfold, facilitating the hanging of items with straps and further increasing the backpack's usable space. This component significantly increases the usable space of the backpack, improving its practicality.

[0019] Secondly, this utility model includes a fixed block, a sliding rod, an adjusting block, a grip, a fixing bolt, and a bolt seat. By sliding and rotating the sliding rod inside the fixed block, the direction and vertical position of the adjusting block can be adjusted at will. Through adjustment, the fixing bolt and the bolt seat can be aligned. Manually rotating the grip can drive the fixing bolt to rotate synchronously, thereby fixing it with the bolt seat and thus achieving a locking function. The design of this component can lock both sides of the backpack and limit the zipper, preventing it from being opened at will, thus improving anti-theft performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the snap fastener and rotating shaft structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the adjusting block and grip structure of this utility model.

[0024] In the diagram: 1. Backpack body; 2. Shoulder straps; 3. Expansion assembly; 301. Stitching fabric; 302. Connecting strip; 303. Snap button; 304. Folding pocket; 305. Rotating shaft; 306. First support rod; 307. Hinge; 308. Second support rod; 4. Small pocket; 5. Zipper; 6. Locking assembly; 601. Fixing block; 602. Sliding rod; 603. Adjusting block; 604. Handle; 605. Fixing bolt; 606. Bolt seat. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 An expandable anti-theft backpack includes a backpack body 1, a shoulder strap 2 fixedly connected to one side of the backpack body 1, an expansion component 3 provided on the front of the backpack body 1, and a locking component 6 installed on one side of the backpack body 1.

[0027] The expansion assembly 3 includes a sewn fabric 301, a connecting strip 302 fixedly connected to the front of the sewn fabric 301, a snap button 303 provided on one side of the connecting strip 302, a folded bag 304 fixedly connected to the front of the sewn fabric 301, a rotating shaft 305 provided on the front of the sewn fabric 301, a first support rod 306 rotatably connected inside the rotating shaft 305, a hinge 307 provided on one side of the first support rod 306, and a second support rod 308 rotatably connected to one side of the hinge 307.

[0028] The locking component 6 includes a fixing block 601, a sliding rod 602 slidably connected to the inner wall of the fixing block 601, an adjusting block 603 installed on the top of the sliding rod 602, a handle 604 provided on the top of the adjusting block 603, and a fixing bolt 605 fixedly connected to the bottom of the handle 604. A bolt seat 606 is threadedly connected to the outer wall of the fixing bolt 605.

[0029] Through the above technical solution, the component can be fixed to the backpack body 1 by sewing by the sewing cloth 301, which increases the firmness. The folding bag 304 can be unfolded to hold certain items, increasing the capacity of the backpack body 1. The connecting strip 302 and the snap button 303 work together to fix the folding bag 304 in the folded state, so that it will not unfold arbitrarily. The rotating shaft 305 can drive the first support rod 306 to rotate, and the hinge 307 can make the second support rod 308 rotate and unfold. This makes it convenient to hang some items with straps, further increasing the usable space of the backpack body 1. The setting of this component can greatly increase the usable space of the backpack body 1 and improve its practicality.

[0030] Specifically, the front of the backpack body 1 has a small pocket 4, and a zipper 5 is installed on one side of the backpack body 1.

[0031] Through the above technical solution, the small pocket 4 allows people to conveniently place some small items that are within easy reach, which can play a role in classifying and storing them, while the zipper 5 enables the opening and closing of the backpack body 1, which plays a preliminary role in preventing theft.

[0032] Specifically, the sewn fabric 301 forms a fixed structure with the snap fastener 303 through the connecting strip 302, and the connecting strip 302 is installed between the sewn fabric 301 and the snap fastener 303. The connecting strip 302 forms a fixed structure with the folded bag 304 through the snap fastener 303.

[0033] Through the above technical solution, the component can be fixed to the backpack body 1 by sewing by the setting of the sewing cloth 301, which increases the firmness. The folding bag 304 can be unfolded, and after unfolding, it can hold certain items, which increases the capacity of the backpack body 1. The connecting strip 302 and the snap button 303 work together to fix the folding bag 304 in the folded state, so that it will not unfold at will.

[0034] Specifically, the sewn fabric 301 forms a rotating structure with the first support rod 306 via the rotating shaft 305, and there are two first support rods 306.

[0035] Through the above technical solution, the rotation of the rotating shaft 305 can drive the first support rod 306 to rotate, which can unfold the first support rod 306 laterally, making it convenient for people to hang some items with hanging bags and increasing the usable space.

[0036] Specifically, the first support rod 306 forms a rotating structure with the second support rod 308 via a hinge 307, and the hinge 307 is located between the first support rod 306 and the second support rod 308.

[0037] Through the above technical solution, the rotation of hinge 307 can drive the second support rod 308 to rotate and unfold, thereby further increasing the hanging length and improving practicality.

[0038] Specifically, the fixed block 601 forms a sliding structure with the adjusting block 603 through the sliding rod 602, and one end of the sliding rod 602 passes through the fixed block 601.

[0039] Through the above technical solution, the sliding rod 602 can slide up and down and rotate on the inner wall of the fixed block 601, thereby driving the adjusting block 603 to rise and rotate synchronously. This allows the position of the adjusting block 603 to be adjusted so that the fixing bolt 605 and the bolt seat 606 are aligned.

[0040] Specifically, the handle 604 is fixed to the bolt seat 606 by the fixing bolt 605, and the shape and size of the outer wall of the fixing bolt 605 match the shape and size of the inner wall of the bolt seat 606.

[0041] With the above technical solution, after aligning the screw groove of the fixing bolt 605 with the bolt seat 606, the handle 604 can be rotated to drive the fixing bolt 605 to rotate, so as to fix it with the bolt seat 606, thereby playing a locking role.

[0042] Working principle: When using this expandable anti-theft backpack, firstly, after placing important items into the backpack body 1, pull the zipper 5 to close it. Then, manually rotate the adjusting block 603. The sliding rod 602 causes the adjusting block 603 to slide and rotate, aligning the screw 605 with the screw groove of the bolt seat 606. Then, rotate the handle 604 to rotate the fixing bolt 605, tightening it with the bolt seat 606 to lock it in place. If more items need to be placed, the snap 303 can be opened, and the folding bag 304 can be unfolded to increase the usable space and store some unused items. Then, rotate the first support rod 306, which is driven to rotate by the rotating shaft 305. Then, the rotation of the hinge 307 drives the second support rod 308 to rotate and unfold, allowing items with hanging pockets to be hung, further increasing the usable space. This completes the entire process. The contents not described in detail in this manual are existing technologies known to those skilled in the art.

[0043] 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 defined by the appended claims and their equivalents.

Claims

1. An expandable anti-theft backpack, comprising a backpack body (1), characterized in that: A shoulder strap (2) is fixedly connected to one side of the backpack body (1), an expansion component (3) is provided on the front of the backpack body (1), and a locking component (6) is installed on one side of the backpack body (1). The expansion component (3) includes a sewn fabric (301), a connecting strip (302) is fixedly connected to the front of the sewn fabric (301), and a snap (303) is provided on one side of the connecting strip (302). A folded bag (304) is fixedly connected to the front of the sewn fabric (301). A rotating shaft (305) is provided on the front of the sewn fabric (301), and a first support rod (306) is rotatably connected inside the rotating shaft (305). A hinge (307) is provided on one side of the first support rod (306), and a second support rod (308) is rotatably connected to one side of the hinge (307). The locking assembly (6) includes a fixing block (601), a sliding rod (602) is slidably connected to the inner wall of the fixing block (601), and an adjusting block (603) is installed on the top of the sliding rod (602). A handle (604) is provided on the top of the adjusting block (603), and a fixing bolt (605) is fixedly connected to the bottom of the handle (604). A bolt seat (606) is threadedly connected to the outer wall of the fixing bolt (605).

2. The expandable anti-theft backpack according to claim 1, characterized in that: The backpack body (1) has a small pocket (4) on the front and a zipper (5) on one side.

3. The expandable anti-theft backpack according to claim 1, characterized in that: The sewn fabric (301) forms a fixed structure with the snap fastener (303) via the connecting strip (302), and the connecting strip (302) is installed between the sewn fabric (301) and the snap fastener (303). The connecting strip (302) forms a fixed structure with the folded bag (304) via the snap fastener (303).

4. The expandable anti-theft backpack according to claim 1, characterized in that: The sewn fabric (301) forms a rotating structure with the first support rod (306) via a rotating shaft (305), and there are two first support rods (306).

5. The expandable anti-theft backpack according to claim 1, characterized in that: The first support rod (306) forms a rotating structure with the second support rod (308) through a hinge (307), and the hinge (307) is located between the first support rod (306) and the second support rod (308).

6. The expandable anti-theft backpack according to claim 1, characterized in that: The fixed block (601) forms a sliding structure with the adjusting block (603) through the sliding rod (602), and one end of the sliding rod (602) passes through the fixed block (601).

7. The expandable anti-theft backpack according to claim 1, characterized in that: The grip (604) is fixed to the bolt seat (606) by a fixing bolt (605), and the shape and size of the outer wall of the fixing bolt (605) match the shape and size of the inner wall of the bolt seat (606).

Images