Air bag structure capable of preventing air passage from being blocked and adhered

Abstract

The utility model discloses an air bag structure for preventing air passage blockage and adhesion, which comprises a first air bag unit, a plurality of middle air bag units and a second air bag unit which are all formed by welding the edges of two layers of membranes, the center of each middle air bag unit is provided with an inflation channel, the two layers of membranes are both provided with a plurality of convex embossments, and the first air bag unit, the middle air bag units and the second air bag unit are connected in a welded mode. According to the multi-layer air bag, a passage is reserved for the inflation channel in the middle of the multi-layer air bag to keep an air path unblocked, and the multi-layer air bag can be inflated and deflated through a set path after being inflated; therefore, discomfort and abnormal sound caused by sudden release of the air bag due to non-inflation or adhesion caused by passage blockage are avoided, the air bag inflation and deflation process is smoother, the air bag inflation and deflation process is linearly controllable, and discomfort caused by insufficient height due to blockage in the air bag inflation process or sudden release of nonlinear height difference is eliminated.

Description

Technical Field

[0001] This utility model relates to the field of inflatable air bag technology, and in particular to an air bag structure that prevents airway blockage and adhesion. Background Technology

[0002] In traditional air bags, the channels are either affected by weld lines, causing dimensional deviations or forming crater-like shapes that block the air passages; or they can only break through one or two blockage points; or they require additional equipment, molds, and time for secondary punching after welding, wasting manpower and resources; or they require special positioning during operation (multiple welds require repeated positioning).

[0003] To address the shortcomings of existing technologies, it is necessary to design an air bag structure that prevents airway blockage and adhesion. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an air bag structure that prevents airway blockage and adhesion.

[0005] An air bag structure for preventing airway blockage and adhesion includes a first air bag unit, several intermediate air bag units, and a second air bag unit, each formed by fusing the edges of two layers of membranes. Each intermediate air bag unit has an inflation channel at its center. Both layers of membranes are provided with several raised embossed patterns, which are located at the edges of the inflation channel and surround it. The membranes of adjacent intermediate air bag units are fused together. The membranes of intermediate air bag units on the opposite side of the first air bag unit are fused together, and the membranes of intermediate air bag units on the opposite side of the second air bag unit are fused together.

[0006] Furthermore, both layers of the intermediate air bag unit are provided with a welding area that surrounds the raised embossing. The welding areas of adjacent intermediate air bag units are welded together. The welding area on the side opposite to the first air bag unit is welded together with the film on the side of the first air bag unit. The welding area on the side opposite to the second air bag unit is welded together with the film on the side of the second air bag unit.

[0007] Furthermore, the raised embossing is in the shape of a herringbone pattern.

[0008] Furthermore, the welded area is annular and located near the raised embossed area.

[0009] Furthermore, the two membranes of the first air bag unit, the several intermediate air bag units, and the second air bag unit are all made of TPU material.

[0010] Beneficial effects: The raised embossing of this utility model provides a pre-reserved passage for the inflation channel in the middle of the multi-layer airbag, ensuring unobstructed airflow. After inflation, the airbag will deflate through a predetermined path, making the size of the entire inflation channel path controllable. This avoids the discomfort and abnormal noise caused by blockage of the passage leading to inflatable failure or adhesion causing sudden release of the airbag. The inflation and deflation process of the airbag is smoother and quieter, and the inflation and deflation process is linear and controllable. This eliminates the discomfort caused by insufficient height or sudden non-linear height difference due to blockage during the inflation process. During operation, no specific angle welding is required; normal welding positioning is sufficient, avoiding the previous problem of requiring multiple layers of repeated positioning. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the air bag structure for preventing airway blockage and adhesion according to this utility model.

[0012] Figure 2 An exploded view of the air bag structure for preventing airway blockage and adhesion according to this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the intermediate air bag unit of this utility model;

[0014] In the picture:

[0015] 1. First airbag unit; 2. Middle airbag unit; 2a. Inflation channel; 2b. Embossed pattern; 2c. Welding area; 3. Second airbag unit. Detailed Implementation

[0016] 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.

[0017] Please refer to Figures 1-3This embodiment proposes an airbag structure to prevent airway blockage and adhesion, including a first airbag unit 1, several intermediate airbag units 2, and a second airbag unit 3, all formed by fusing the edges of two layers of membranes. The membranes of the first airbag unit 1, the intermediate airbag units 2, and the second airbag unit 3 are all made of TPU material. An inflation channel 2a is provided at the center of each intermediate airbag unit 2. Several raised embossed patterns 2b are provided on both membranes of the intermediate airbag unit 2, and these raised embossed patterns 2b are located at the edge of the inflation channel 2a and surround the inflation channel 2a. The shape of the raised embossed patterns 2b is a herringbone pattern. The raised embossed patterns 2b provide a passage for the inflation channel 2a in the middle of the multi-layered airbag to maintain unobstructed airflow. After inflation, the airbag will continue to expand along a predetermined path. Deflating the air bag makes the entire inflation channel path dimension controllable, thus avoiding the discomfort and abnormal noise caused by blockage leading to inflatable failure or adhesion and sudden release of the air bag. The inflation and deflation process of the air bag is smoother and quieter, and the inflation and deflation process is linear and controllable, thereby eliminating the discomfort caused by insufficient height or sudden nonlinear height difference due to blockage during the inflation process. No specific angle welding is required during operation; normal welding positioning is sufficient, avoiding the previous problem of requiring multiple layers of repeated positioning. The diaphragms of adjacent intermediate air bag units 2 are welded accordingly, the diaphragms of intermediate air bag unit 2 and the first air bag unit 1 on the opposite side are welded accordingly, and the diaphragms of intermediate air bag unit 2 and the second air bag unit 3 on the opposite side are welded accordingly.

[0018] Both layers of the membrane of the intermediate air bag unit 2 are provided with a welding area 2c that surrounds the raised embossing 2b. The welding area 2c is annular and located near the raised embossing 2b. The welding areas 2c of adjacent intermediate air bag units 2 are welded to each other. The welding area 2c on the side opposite to the first air bag unit 1 of the intermediate air bag unit 2 is welded to the membrane on the side of the first air bag unit 1. The welding area 2c on the side opposite to the second air bag unit 3 of the intermediate air bag unit 2 is welded to the membrane on the side of the second air bag unit 3. By setting the welding area 2c near the raised embossing 2b and surrounding the raised embossing 2b, the first air bag unit 1, several intermediate air bag units 2 and the second air bag unit 3 are connected to form a multi-layer air bag. At the same time, sufficient inflation and deflation space is reserved for the inflation channel 2a, which maintains the smooth flow of air to a certain extent.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air pocket structure for preventing airway obstruction and adhesion, characterized by: The air bag unit comprises a first air bag unit (1), a plurality of intermediate air bag units (2) and a second air bag unit (3), which are all formed by welding the edges of two film sheets, the center of each intermediate air bag unit (2) is provided with an inflation channel (2a), a plurality of convex embossings (2b) are arranged on the two film sheets of each intermediate air bag unit (2), and the plurality of convex embossings (2b) are arranged at the edge of the inflation channel (2a) and surround the inflation channel (2a) as the center; the film sheets of adjacent intermediate air bag units (2) are correspondingly welded, the film sheets of the intermediate air bag units (2) and the first air bag unit (1) on the opposite side are correspondingly welded, and the film sheets of the intermediate air bag units (2) and the second air bag unit (3) on the opposite side are correspondingly welded.

2. An air pocket structure for preventing airway blockage and cohesions according to claim 1, characterized in that: The two film sheets of each intermediate air bag unit (2) are both provided with a welding area (2c) surrounding the convex embossings (2b), the welding areas (2c) of adjacent intermediate air bag units (2) are correspondingly welded, the welding area (2c) of the intermediate air bag units (2) and the first air bag unit (1) on the opposite side is correspondingly welded with the film sheet of the first air bag unit (1) on one side, and the welding area (2c) of the intermediate air bag units (2) and the second air bag unit (3) on the opposite side is correspondingly welded with the film sheet of the second air bag unit (3) on one side.

3. An air pocket structure for preventing airway blockage and cohesions according to claim 1, wherein: The convex embossings (2b) are in the shape of a herringbone pattern.

4. An air pocket structure for preventing airway blockage and cohesions according to claim 2, wherein: The welding area (2c) is in the shape of a circular ring and is located close to the convex embossings (2b).

5. The air pocket structure to prevent airway blockage and cohesions of claim 1, wherein: The two film sheets of the first air bag unit (1), the plurality of intermediate air bag units (2) and the second air bag unit (3) are all made of TPU material.

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