An airbag which is free from wrinkles after inflation

Abstract

The utility model provides a kind of air bag without wrinkle mark after inflating, the air bag is six petal plum blossom, and is spliced into by upper piece and lower piece, and rounded corner design is used to form arc concave between two adjacent arc convex parts, the edge of upper piece and lower piece is tightly connected to form reserved part, gas hole is set up at the edge of any arc convex part and installs inflation interface. By reserving the position that will be deformed after inflating in advance, the problem that will be deformed at the established position after inflating is solved, so that the problem of large deformation and deformation position randomness is avoided;The design of reserved part makes the deformation amount of air bag after inflating small, so that the abnormal sound generated when air bag deforms greatly is eliminated;The overall shape adopts the design of six petal plum blossom, rounded corner design is used to form arc concave between two adjacent arc convex parts, the sharp corner with greater stress such as wrinkle mark after air bag inflating is eliminated, stress concentration is avoided, greater burst pressure can be obtained, and it is safer in use.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an air bag that does not have wrinkles after inflation. Background Technology

[0002] Currently, most cars are equipped with airbags to protect occupants. The traditional structure of an airbag includes an airbag, sensors, and an inflator. When the sensors detect drastic changes in acceleration, velocity, or displacement, the central control unit (ECU), connected to the sensors, calculates the collected data and determines whether a collision has occurred based on pre-programmed boundary conditions. It then controls the inflator to inflate the airbag, causing it to deploy rapidly and await the impact of the occupant's inertial motion. Traditional airbags are typically round, square, or oval in shape, and after inflation, they often exhibit noticeable wrinkles, rattling noises, and stress concentration. Utility Model Content

[0003] This invention provides an air bag that does not have wrinkles after inflation, in order to solve the technical problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] An air bag that inflates without wrinkles, comprising an upper piece and a lower piece joined together, both the upper and lower pieces being shaped like a plum blossom, with multiple spaced arc-shaped protrusions along their edges, and an arc-shaped concave portion formed between adjacent arc-shaped protrusions by a rounded corner design, the arc-shaped protrusions and concave portions being connected by an arc shape; the edges of the upper and lower pieces are tightly connected to form a reserved portion, and an air hole is opened at the edge of any of the arc-shaped protrusions and an inflation interface is installed thereon, the inflation interface passing through the reserved portion and communicating with the inner cavity of the air bag.

[0006] As a further preferred embodiment of this utility model, a vent is provided in the middle of the lower piece, and a sealing component is provided on the vent.

[0007] As a further preferred embodiment of the present invention, the upper piece is connected to other air bags through an adhesive portion; the adhesive portion is located in the middle of the upper piece, and a through hole is provided in the center of the adhesive portion, which connects the inner cavities of two adjacent air bags.

[0008] As a further preferred embodiment of this invention, both the upper sheet and the lower sheet are made of 100% nylon 66 fiber cloth.

[0009] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0010] 1. Pre-determined areas for deformation after inflation (i.e., reserved portions) ensure that deformation occurs precisely at these designated locations after inflation, thus avoiding large deformations and random deformation locations. 2. The reserved portions at the edges of the upper and lower panels are tightly connected. This design minimizes the deformation of the airbag after inflation, eliminating abnormal noises caused by excessive airbag deformation. 3. The airbag's shape features a six-petal plum blossom design. The rounded corners between adjacent arc-shaped protrusions form an arc-shaped concave section, eliminating sharp corners prone to stress, such as wrinkles, after inflation. This prevents stress concentration, allows for greater burst pressure, and enhances safety during use. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of the upper piece;

[0013] Figure 2 This is a structural diagram of the lower piece;

[0014] In the diagram, 1 is the air bag, 11 is the upper piece, 12 is the lower piece, 13 is the arc-shaped protrusion, 14 is the arc-shaped concave part, 15 is the reserved part, 16 is the vent, 17 is the adhesive part, 18 is the through hole, and 19 is the sealing component. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0016] Please refer to the appendix. Figures 1-2This embodiment provides an airbag that inflates without wrinkles. The airbag 1 is composed of an upper piece 11 and a lower piece 12, both made of 100% nylon 66 fiber fabric. Both pieces are shaped like a plum blossom, with six spaced arc-shaped protrusions 13 along their edges. An arc-shaped recess 14 is formed between adjacent arc-shaped protrusions 13 by a rounded corner design, and the protrusions 13 and recesses are connected by an arc shape. The edges of the upper and lower pieces 11 are tightly connected to form a reserved portion 15. An air hole is opened at the edge of any arc-shaped protrusion 13, and an inflation port is installed thereon. This inflation port passes through the reserved portion 15 and communicates with the inner cavity of the airbag 1.

[0017] To further explain, a vent 16 is provided in the middle of the lower piece 12, and a sealing component 19 is provided on the vent 16. Opening the sealing component 19 allows the gas inside the air bag 1 to be discharged through the vent 16. The upper piece 11 is connected to other air bags through an adhesive part 17 located in the middle of the upper piece 11, and a through hole 18 is provided in the center of the adhesive part 17. The through hole 18 connects the inner cavities of two adjacent air bags. When the bottom air bag is inflated, the other air bags are inflated synchronously through the through hole 18.

[0018] The airbag provided in the above embodiments solves the problem of deformation occurring at predetermined locations after inflation by pre-reserving space for deformation after inflation, thus avoiding large deformations and random deformation locations. The edges of the upper and lower panels are tightly connected to form the reserved portion, minimizing the deformation of the airbag after inflation and eliminating abnormal noises caused by large deformation. The overall shape adopts a six-petal plum blossom design, with rounded corners between adjacent arc-shaped protrusions forming arc-shaped concave sections. This eliminates sharp corners with high stress, such as wrinkles, after inflation, avoiding stress concentration, achieving greater burst pressure, and enhancing safety during use.

[0019] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. An air bag that does not leave wrinkles after inflation, wherein the air bag (1) is composed of an upper piece (11) and a lower piece (12) joined together, characterized in that, Both the upper piece (11) and the lower piece (12) are plum blossom shaped, with multiple spaced arc-shaped protrusions (13) on the edges. An arc-shaped concave part (14) is formed between two adjacent arc-shaped protrusions (13) by rounding corners. The arc-shaped protrusions (13) and the arc-shaped concave parts (14) are connected by an arc. The edges of the upper piece (11) and the lower piece (12) are tightly connected to form a reserved part (15). An air hole is opened at the edge of any arc-shaped protrusion (13) and an inflation interface is installed. The inflation interface passes through the reserved part (15) and communicates with the inner cavity of the air bag (1).

2. The air bag that does not leave wrinkles after inflation according to claim 1, characterized in that, A vent (16) is provided in the middle of the lower piece (12), and a sealing component (19) is provided on the vent (16).

3. The air bag that does not leave wrinkles after inflation according to claim 2, characterized in that, The upper piece (11) is connected to other air bags through an adhesive part (17); the adhesive part (17) is located in the middle of the upper piece (11), and a through hole (18) is provided in the center of the adhesive part (17), which connects the inner cavities of two adjacent air bags.

4. The air bag that does not leave wrinkles after inflation according to claim 1, characterized in that, Both the upper piece (11) and the lower piece (12) are made of 100% nylon 66 fiber cloth.

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