A double-frame backpack

Abstract

The utility model belongs to the knapsack technical field, specifically disclose a double frame formula knapsack, including the body of a bag and the back of the body connects the back width, the body is close to the back width place and forms the first frame with the opening, be equipped with the second frame at the back width, the first frame and the second frame form the back width, the first frame and the second frame bottom fixed joint, the rest position forms the opening of back width, be equipped with the breathable grid on the second frame. The utility model is on the basis of possessing the back width effect, forms the larger opening, makes it have the larger capacity, then still has the better breathability.

Description

Technical Field

[0001] This utility model relates to the field of outdoor backpack technology, and in particular to a double-frame backpack. Background Technology

[0002] There are many types of carrying systems for outdoor backpacks on the market. Professional mountaineering backpacks typically incorporate a metal frame to provide balanced weight distribution and breathability, but this also has its drawbacks. One drawback is that the integrated, closed metal frame prevents any openings on the back panel, limiting the access to large equipment. Another drawback is that the significantly curved metal frame, designed to ensure breathability and carrying comfort, drastically reduces the backpack's internal capacity and creates an irregular shape, making it difficult to fit large items or thin, flat, square items like laptops and tablets.

[0003] There are also photography backpacks on the market that incorporate metal frames and openings in the back panel to ensure that photography equipment and laptops can be placed flat while still providing a decent carrying experience. However, their carrying comfort and breathability are much worse than the outdoor hiking backpacks mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a dual-frame backpack that, through two frames, ensures a large storage space while also providing good breathability.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0006] A dual-frame backpack includes a bag body and a back panel connected to the back of the bag body. The bag body forms a first frame with an opening near the back panel, and the back panel is provided with a second frame. The first frame and the second frame form a back panel. The bottom of the first frame and the second frame are fixed together, and the remaining positions form openings in the back panel. The second frame is provided with a breathable mesh.

[0007] Furthermore, a lateral support bending structure is formed at the top of the first frame, and the bending structure forms the upper bending structure of the back panel.

[0008] Furthermore, the first frame forms a support for the package, and the second frame is partially located within the support space formed by the first frame.

[0009] Furthermore, the first frame is higher than the second frame, and the bottom of the second frame is bent to form the bottom curved structure of the back panel.

[0010] Furthermore, the bottom of the second frame forms an expanding diameter structure with a gradually widening diameter, which forms a clamping cavity.

[0011] Furthermore, the lower part of the second frame bends to form a bending trend from the inside out, and the outermost part of the bending trend extends and connects to the diameter-expanding structure.

[0012] Furthermore, the bending trend extends along the center of the package towards the outside of the package, forming an expanding diameter trend with a gradually increasing width in the horizontal direction.

[0013] Furthermore, the expanded diameter structure is a symmetrical structure with the package body as the axis of symmetry. After the expanded diameter structure on each side bends outward, a transition cavity is formed between it and the package body.

[0014] Furthermore, the bottom opening of the first frame forms an inverted U-shaped structure, and the second frame forms a closed cavity.

[0015] Furthermore, the backpack also includes a shoulder strap, the first end of which is connected to the first frame structure and the second frame structure, respectively.

[0016] The beneficial effects of this utility model are as follows: In this invention, two additional frames are added to create better load-bearing capacity, ensuring the bag can hold heavy items such as laptops and providing a better carrying experience for the user.

[0017] In this invention, an opening is formed between the two frames, allowing large items to be placed inside through the larger opening. The two frames do not occupy the internal space of the backpack but are located at the carrying area. Finally, a breathable mesh is used to create good breathability. Attached Figure Description

[0018] Figure 1 This is one of the structural schematic diagrams of a dual-frame backpack provided by this utility model; Figure 2 This is the second structural schematic diagram of a dual-frame backpack provided by this utility model; Figure 3 The third schematic diagram of a dual-frame backpack provided by this utility model; Figure 4 The fourth structural schematic diagram of a dual-frame backpack provided by this utility model; Figure 5 Exploded views of the first and second frames provided for this utility model; Figure 6 Assembly diagram of the first frame and the second frame provided for this utility model; In the picture: 100. Bag body; 200. Rear panel; 300. First frame; 310. Bending structure; 400. Second frame; 410. Breathable mesh; 420. Clamping cavity; 430. Bending trend; 500. Zipper; 600. Shoulder strap. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0020] See attached document Figure 1-6 As shown, this embodiment of a dual-frame backpack includes a bag body 100 and a rear panel 200 connected to the back of the bag body 100. The rear panel serves as a support and directly contacts the user's back or other base. Unlike existing technologies that may use a single frame or multiple frames on the bag body 100, this embodiment uses two frames. The first frame 300, located near the bag body 100, forms an opening and is then fitted to the outermost part of the bag body 100 through the opening. The second frame 400 is located at the rear panel. The first and second frames together form the back panel, directly contacting the human body. In this configuration, the first and second frames form the back panel, with only the bottom of the first frame 300 and the second frame 400 fixed, while the remaining areas form openings. Thus, only one side is fixed, while the other three sides can be opened. Furthermore, a breathable mesh 410 can be provided on the second frame 400 near the human body, ensuring good breathability across the entire surface.

[0021] In existing technologies, most of the time there is only one frame as the back panel, and then part of the carrying area can be added into the bag body. At this time, most of the space is in the bag body, and the storage space of the entire backpack is limited. Furthermore, if all items are placed in the bag body, the frame of the bag body itself is affected, resulting in an irregular bag shape, making it difficult to put in large items or thin and flat square items such as laptops and tablets. In this embodiment, the two frames form a separate space, which can store some items separately. At the same time, the opening of the carrying area is large, which can easily put in larger items, improving the user experience.

[0022] Furthermore, in order to create space in the front-to-back direction, a lateral support bending structure 310 is formed at the top of the first frame 300, which forms the upper bending structure of the back panel. Due to the lateral support, the bending structure 310 gives the back panel a certain thickness, or in the front-to-back direction, providing greater support space and facilitating the storage of more items.

[0023] During assembly, the first ore body 300 is inserted into the edge of the package 100, thus forming a support for a portion of the package 100, giving it a three-dimensional space. The second frame 400, during assembly, is partially located within the support space formed by the first frame 300. At this point, the two frame structures are partially intersected, creating a possible double-layer support in certain areas, thereby increasing the load-bearing strength.

[0024] To create a certain height difference, the first frame 300 is higher than the second frame 400, and the bottom of the second frame 400 is bent to form the bottom curved structure of the back panel. At this point, the first frame 300 and the second frame 400 form an upward and downward curve, thus creating the width structure of the back panel. The first frame is higher on the inside, thus providing higher support at the bag body 100, while the second frame 400 creates a lower space for the entire back panel, avoiding interference with the shoulder straps, etc.

[0025] To improve the user experience, the bottom of the second frame 400 forms an expanding structure with a gradually widening diameter, which creates a clamping cavity 420. This clamping cavity can then be fitted snugly against the user's waist, preventing the backpack from constantly sinking due to the weight of the items and affecting the user experience. An elastic material, such as elastic plastic, can be used to construct this frame structure. The clamping cavity 420 is located at the rear of the bag, and it typically contacts the user's waist directly.

[0026] Furthermore, a special structure is formed for each side near the clamping cavity 420. Specifically, the lower part of the second frame 400 bends to form a bending trend 430 from the inside out, and the outermost extension of the bending trend connects with the diameter-expanding structure. At this time, a transitional bending structure is formed on the upper part of the clamping cavity 420, so that the second frame 400 can be divided into a large upper frame and a small lower frame, with the large and small frames connected by a transition section.

[0027] For the transition section above the clamping cavity, its bending trend extends from the center of the package 100 toward the outside of the package 100, forming a gradually increasing diameter trend in the horizontal direction. At this time, the bending is formed along the front-back direction of the package, so that the entire large frame is connected to the slightly forward small frame after passing through the transition section.

[0028] Furthermore, the clamping cavity 420 consists of two expanded diameter structures, which are symmetrical about the package 100. Each expanded diameter structure bends outward to form a transition cavity with the package 100.

[0029] In this embodiment, the first frame 300 and the second frame 400 can be connected by various means such as zippers and buckles, so that the opening between them can be closed to form a receiving cavity. For example, in this embodiment, a zipper 500 can be used to connect the entire opening, thereby forming a better closed receiving cavity.

[0030] Preferably, in order to fit snugly against the bag body 100 and form a square bag body, the first frame 300 forms an inverted U-shaped structure with a bottom opening, and the second frame 400 forms a closed cavity. At this time, a closed cavity and an open cavity cooperate, and the bottom of the open cavity can cooperate with the bottom of the closed cavity through the cooperation of the canvas or the like on the outer periphery of the first frame 300, the body of the second frame 400, and the zipper connecting the two to form a closed cavity.

[0031] To ensure a more secure connection between the two frames, a shoulder strap 600 is used as an intermediary. The first and second ends of the shoulder strap 600 are connected to the first frame structure 300 and the second frame structure 400, respectively. The shoulder strap 600 is connected to both frames, making them a single unit.

[0032] In practical use, a carrying system consisting of two metal frames can be used, connected at the bottom. Compared with existing technologies, this achieves the following advantages: Firstly, since the connection is only at the bottom, the back panel can have a large opening, making it convenient to quickly put in and take out equipment and other items.

[0033] Secondly, the second frame is lower at 400mm, and then has a clamping cavity and transition section at the bottom. When combined with the higher first frame, it makes the back panel fit the curve of the human body and is comfortable.

[0034] Third, the second frame features a breathable mesh, with its taut perforated fabric providing good breathability for carrying passengers.

[0035] Fourth, while ensuring the above functions, the double metal frame support system does not occupy the internal space of the backpack, and at the same time adds a small space to put other items.

[0036] In this embodiment, the backpack's rear carrying structure is supported by a first frame 300 consisting of an inverted U-shaped open metal frame and two second frames 400 consisting of a closed metal frame. The first frame 300 is embedded into the outer ring of the rear of the bag body 100 to form the backpack and its supporting structure, thereby providing overall stability and upper curvature of the back panel. The second frame 400 serves as a closed frame, with a breathable mesh fabric stretched taut to form a mesh frame. The mesh frame with the second frame 400 is fixed to the entire open back panel that can be opened with a zipper 500 (i.e., the receiving cavity formed by the two frames), and when the zipper is closed, it forms a complete carrying system with the first frame 300 and the bag body.

[0037] In this invention, there are two frames, one facing inward and the other slightly outward. The opening of the first frame 300 is positioned near the lower middle part of the second frame 400, forming a partial double-layer structure. The upper half of the second frame is positioned inward, and the lower half faces outward, giving it a certain support strength in the front-back direction. Compared with frames on the same plane, the addition of the second frame 400 improves the overall user experience of the bag. It holds the waist and the upper and lower frames at the front and back, making it less tightly fitted to the body. Combined with the breathable mesh, it has high breathability.

[0038] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementation methods or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-frame backpack, comprising a bag body and a rear panel connected to the back of the bag body, characterized in that, The package body forms a first frame with an opening near the rear panel, and a second frame is provided at the rear panel. The first frame and the second frame form the back panel. The bottom of the first frame and the second frame are fixed together, and the remaining positions form openings in the back panel. The second frame is provided with a breathable mesh.

2. A dual-frame backpack according to claim 1, characterized in that, The top of the first frame forms a lateral support bending structure, which forms the upper bending structure of the back panel.

3. A dual-frame backpack according to claim 1, characterized in that, The first frame forms the support of the package, and the second frame is partially located within the support space formed by the first frame.

4. A dual-frame backpack according to claim 1, characterized in that, The first frame is higher than the second frame, and the bottom of the second frame is bent to form the bottom curved structure of the back panel.

5. A dual-frame backpack according to claim 1, characterized in that, The bottom of the second frame forms an expanding diameter structure that gradually widens, and the expanding diameter structure forms a clamping cavity.

6. A dual-frame backpack according to claim 5, characterized in that, The lower part of the second frame bends to form a bending trend from the inside out, and the outermost part of the bending trend extends and connects to the diameter-expanding structure.

7. A dual-frame backpack according to claim 6, characterized in that, The bending trend extends from the center of the package towards the outside of the package, forming an expanding diameter trend with a gradually increasing width in the horizontal direction.

8. A dual-frame backpack according to claim 6, characterized in that, The expanded diameter structure is a symmetrical structure with the inclusion body as the axis of symmetry. After the expanded diameter structure on each side bends outward, a transition cavity is formed between it and the inclusion body.

9. A dual-frame backpack according to any one of claims 1-8, characterized in that, The first frame has an opening at the bottom that forms an inverted U-shaped structure, while the second frame forms a closed cavity.

10. A dual-frame backpack according to claim 1, characterized in that, The backpack also includes a shoulder strap, with a first end and a second end of the shoulder strap connected to the first frame structure and the second frame structure, respectively.

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