A gas column bag convenient to roll up

Abstract

The utility model discloses a kind of air column bags convenient to roll up, including air column bag body, the upper end of air column bag body is fixed with roll-up engagement mechanism, roll-up engagement mechanism includes support bag, the side of support bag is fixed with assembly seat, the other side of air column bag body is fixed with extension bag;Air column bag in the utility model is inflated, can effectively resist the expansion tension of air column bag body due to internal air pressure, while offsetting the natural loose tendency that can appear after winding, ensure that the rolling state is stable, not easy to loosen due to external force or air pressure effect;After rolling is completed, the closed loop tightening belt that is worn in support bag can be further locked by multiple turns winding Rolling state, and trapezoidal engagement structure forms " engagement + tightening " double fixation, substantially improve the stability after rolling, and overall volume is substantially reduced, compared with unrolled deployment state More storage space is saved, especially suitable for limited space scene such as family, warehouse.

Description

Technical Field

[0001] This utility model relates to the field of air column bag technology, specifically an air column bag that is easy to roll up. Background Technology

[0002] With the rapid development of e-commerce logistics, precision instrument transportation, and other industries, air column bags, as a new type of cushioning packaging material, are widely used in the packaging and transportation of electronic products, medical devices, precision instruments, food, and other products due to their advantages such as lightweight, good shock absorption, and reusability. Air column bags are typically composed of multiple independent air columns, which, when inflated, form an elastic cushioning structure that effectively absorbs external impacts and protects the packaged products from damage.

[0003] However, after use, the inflated air column bag becomes thicker, and the internal air pressure causes expansion tension, making it inconvenient to roll up for reuse. This expansion tension, along with the inherent loosening tendency after winding, easily leads to unstable winding. Even with simple wrapping and securing, it can easily loosen due to external force or air pressure. Furthermore, users often need to manually align the ends of the air column bag and wind it into a column, a cumbersome and time-consuming process. Manual alignment makes it difficult to ensure the ends are flush, resulting in skewed or loose ends. This not only affects the aesthetics of storage but also risks the air column bag unraveling during storage or transportation due to collisions or compression, thus losing its cushioning protection. Therefore, a rollable air column bag is needed to solve the problems existing in current technology. Utility Model Content

[0004] The purpose of this invention is to provide an air column bag that is easy to roll up, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air column bag that is easy to roll up, comprising an air column bag body, a winding engagement mechanism fixed at the upper end of the air column bag body, the winding engagement mechanism comprising a support bag, an assembly base fixed on one side of the support bag, an extension bag fixed on the other side of the air column bag body, a trapezoidal engagement tooth fixed at one end of the extension bag, and a closed-loop tightening strap slidably connected to one end face of the support bag.

[0006] Preferably, a trapezoidal meshing groove is provided between the upper and lower assembly seats, and the trapezoidal meshing teeth are adapted to the trapezoidal meshing groove of the assembly seat.

[0007] Preferably, the assembly base is connected to the support bag, and the extension bag, trapezoidal meshing teeth, and support bag are connected to each other.

[0008] Preferably, the support bag, assembly base, extension bag, and trapezoidal meshing teeth all have hollow cavities inside.

[0009] Preferably, the hollow chamber is connected to the air column bag body, and the interior of the hollow chamber is filled with gas.

[0010] Preferably, one end face of the support bag has a receiving hole, and the closed-loop tightening strap passes through the receiving hole of the support bag.

[0011] This invention provides an air column bag that is easy to roll up, and has the following advantages compared with the prior art:

[0012] (1) When the air column bag body is wound, the trapezoidal meshing teeth of the extension bag will be aligned with the trapezoidal meshing groove of the assembly seat under the natural guidance of the winding action. There is no need to manually align precisely, which simplifies the winding operation steps and allows users to quickly complete the winding action. Furthermore, through the interlocking effect of the trapezoidal meshing structure, the end of the air column bag body can remain flush after winding, avoiding the problem of skewed and loose ends in traditional winding, and improving the aesthetics of storage.

[0013] (2) The trapezoidal meshing teeth and the inclined sides of the trapezoidal meshing groove form a mutually fitting force-bearing surface, which has a natural self-locking characteristic. When the air column bag is inflated, it can effectively resist the expansion tension of the air column bag body caused by the internal air pressure, and at the same time offset the natural loosening tendency that may occur after winding, ensuring the stability of the winding state and not easily loosened by external force or air pressure. After winding, the closed-loop tightening strap in the support bag can further lock the winding state through multiple turns, forming a double fixation of "meshing + tightening" with the trapezoidal meshing structure, which greatly improves the stability after winding and the overall volume is greatly reduced. Compared with the unwound unfolded state, it saves more storage space, especially suitable for homes, warehouses and other scenarios with limited space. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0015] Figure 2 This is a three-dimensional view of the winding engagement mechanism of this utility model;

[0016] Figure 3 This is a three-dimensional view of the hollow chamber structure of this utility model;

[0017] Figure 4 This is a perspective view of the closed-loop tightening belt structure of this utility model.

[0018] In the diagram: 1. Air column bag body; 2. Winding engagement mechanism; 3. Support bag; 4. Assembly base; 5. Trapezoidal engagement groove; 6. Extension bag; 7. Trapezoidal engagement teeth; 8. Receiving hole; 9. Hollow chamber; 10. Closed-loop tightening belt. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides an air column bag that is easy to roll up, including an air column bag body 1 and an integrated winding engagement mechanism 2. When the air column bag is inflated, the gas enters the air column channel through the thin plastic channel at the edge (with a one-way valve structure) and flows into the hollow cavity 9 of the winding engagement mechanism 2 at the same time, so as to realize the synchronous establishment of air pressure between the body and the winding assembly, avoiding the secondary inflation step.

[0021] Among them, the winding engagement mechanism 2, as a key functional component, is composed of a support bag 3, an assembly base 4, an extension bag 6, trapezoidal engagement teeth 7, and a closed-loop tensioning belt 10, forming a complete winding locking system.

[0022] It is worth noting that the symmetrically distributed assembly seats 4 form a trapezoidal meshing groove 5, which, together with the trapezoidal meshing teeth 7 at the end of the extension bag 6, constitutes a precisely matched meshing structure. The trapezoidal meshing design has a natural self-locking characteristic. When meshing, the inclined sides form a tightly fitting force-bearing surface, which can effectively resist the expansion tension generated by the internal air pressure of the air column bag body 1, thus fundamentally solving the problem of traditional air column bags easily loosening after winding.

[0023] It is worth noting that the support bag 3 remains connected to the assembly base 4, and the extension bag 6, trapezoidal meshing teeth 7, and support bag 3 form a complete air circulation path. All components have a hollow chamber 9 inside. This chamber is connected to the air column bag body 1, allowing for simultaneous air pressure filling of the winding mechanism during the air column bag inflation process, eliminating the need for additional inflation and simplifying the usage process. During winding, the bag begins to wind from one end of the air column bag body 1, and the extension bag 6 naturally drives the trapezoidal meshing teeth 7 to engage with the trapezoidal meshing groove 5 of the assembly base 4 as it winds. The meshing structure automatically and precisely aligns during winding, significantly reducing manual alignment operations, ensuring a flush finish at the end after winding, and improving operational smoothness.

[0024] It is worth noting that the support bag 3 has a receiving hole 8 on its end face, through which a closed-loop tightening strap 10 is threaded to form an adjustable tightening structure. After winding, the roll shape can be locked by multiple turns, which is faster than traditional binding methods and can maintain the consistent tightness of the roll.

[0025] The solution has the following working process: The inflation port of the air column bag is usually designed at the edge position, which is a thin plastic channel (similar to a straw). The inflation port is connected to the air column channel. A one-way valve structure prevents air leakage after inflation. When the air column bag body 1 is inflated, the gas will also enter the hollow cavity 9 of the winding engagement mechanism 2.

[0026] When the air column bag is inflated and then rolled up for storage, one end of the air column bag body 1 begins to wind. In this way, the trapezoidal meshing teeth 7 on one side of the extension bag 6 will be embedded into the trapezoidal meshing groove 5 of the assembly seat 4 during the winding action. Since the trapezoidal meshing teeth 7 and the trapezoidal meshing groove 5 of the assembly seat 4 are meshed and connected, the trapezoidal meshing structure design has a natural self-locking characteristic. The inclined side of the trapezoid can form a mutually close force-bearing surface when meshing. When the air column bag is wound up, the trapezoidal meshing teeth 7 and the trapezoidal meshing groove 5 are tightly fitted, which can effectively resist the expansion tension generated by the internal air pressure of the air column bag body 1, as well as the natural loosening tendency that may occur after winding. During the winding process, the trapezoidal meshing teeth 7 of the extension bag 6 will naturally align with the trapezoidal meshing groove 5 of the assembly seat 4, reducing the trouble of manual alignment, making the winding action smoother, and ensuring that the end of the air column bag body 1 is flush after winding.

[0027] After the air column bag body 1 is wound up, the closed-loop tightening strap 10 threaded in the support bag 3 can be used to lock the wound state of the air column bag body 1 by multiple turns. The air column bag occupies little space after being wound up, making it easy to stack, store or transport, and can also reduce clutter during storage.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Although embodiments of this utility model have been shown and described, this does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model. Regarding the embodiments of this utility model, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An easy-to-roll air column bag, comprising an air column bag body (1), characterized in that: The upper end of the air column bag body (1) is fixed with a winding engagement mechanism (2). The winding engagement mechanism (2) includes a support bag (3). An assembly seat (4) is fixed on one side of the support bag (3). An extension bag (6) is fixed on the other side of the air column bag body (1). A trapezoidal engagement tooth (7) is fixed on one end of the extension bag (6). A closed-loop tightening strap (10) is slidably connected to one end face of the support bag (3).

2. The air column bag that is easy to roll up according to claim 1, characterized in that: A trapezoidal meshing groove (5) is provided between the upper and lower assembly seats (4), and the trapezoidal meshing teeth (7) are adapted to the trapezoidal meshing groove (5) of the assembly seat (4).

3. The air column bag that is easy to roll up according to claim 2, characterized in that: The assembly base (4) is connected to the support bag (3), and the extension bag (6), the trapezoidal meshing tooth (7) and the support bag (3) are connected to each other.

4. The air column bag that is easy to roll up according to claim 3, characterized in that: The support bag (3), assembly base (4), extension bag (6) and trapezoidal meshing teeth (7) are all provided with hollow cavities (9).

5. The air column bag for easy winding according to claim 4, characterized in that: The hollow chamber (9) is connected to the air column bag body (1), and the interior of the hollow chamber (9) is filled with gas.

6. The air column bag for easy winding according to claim 1, characterized in that: The support bag (3) has a receiving hole (8) on one end face, and the closed-loop tightening strap (10) passes through the receiving hole (8) of the support bag (3).

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