Exhaust structure of passenger airbag

Abstract

The utility model discloses an exhaust structure of a passenger air bag. An exhaust piece is arranged on an exhaust hole. The exhaust part comprises an air guide part and a crevasse part; the gas guide part is arranged on the periphery of the exhaust hole, so that gas from the exhaust hole enters the gas guide part; the crevasse part is arranged on the exhaust port of the air guide part, so that the interior of the air guide part is sealed; the crevasse part is torn under the impact of gas in the gas guide part, so that the gas is discharged from the crevasse part; before the air bag main body is effectively expanded, the crevasse part does not exhaust air in the inflation process, so that a generator with relatively small power can be selected, and the expansion speed of the air bag is not influenced; and based on the design of the air guide part, the air guide part is convex in the exhaust process, so that the air is guided, the air is exhausted towards the two sides of the air bag main body, passengers can be prevented from touching the exhausted air by mistake, and people are prevented from being scalded.

Description

Technical Field

[0001] The utility model discloses an exhaust structure for a passenger airbag, belonging to the field of safety airbags. Background Art

[0002] When a collision occurs, the gas in the generator explodes and quickly fills the airbag through the air inlet. When the person comes into contact with the airbag, the gas is quickly discharged, providing an upward cushioning force when the person falls violently downward.

[0003] The exhaust hole design of existing airbags is that a circular exhaust hole is sewn on the side panels on both sides. When the gas is detonated and fills the airbag, the two exhaust holes on the side panels of the airbag are exhausted at the same time, resulting in more gas being generated when the airbag generator is detonated during the early design of the airbag, which places higher performance requirements on the airbag. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide an exhaust structure for a passenger airbag to solve the problem.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: an exhaust structure of a passenger airbag, including an airbag body, an air inlet hole, and an exhaust hole; the air inlet hole and the exhaust hole are both arranged on the airbag body; an exhaust component is arranged on the exhaust hole; the exhaust component includes an air guide portion and a breach portion; the air guide portion is arranged on the periphery of the exhaust hole so that the gas discharged from the exhaust hole enters the air guide portion; the breach portion is arranged on the exhaust port of the air guide portion so that the inside of the air guide portion is sealed; the breach portion will be torn by the impact of the gas in the air guide portion, so that the gas can be discharged from the breach portion.

[0006] Preferably, the exhaust member is in the shape of a sheet and has a through hole in the middle, and the through hole corresponds to the exhaust hole.

[0007] Preferably, the exhaust member is folded in half and is sewn and fixed at both side edges by reinforcement lines to form an air guide portion.

[0008] Preferably, the folded edge of the exhaust member is a beveled edge, so that the air guide portion is trumpet-shaped, and the side with a larger diameter of the air guide portion is sewn and fixed on the exhaust hole, while the side with a smaller diameter serves as the exhaust port.

[0009] Preferably, the exhaust port is sewn through a weakened line so that the exhaust port is closed to form a breach portion.

[0010] Beneficial Effects

[0011] In the utility model, before the airbag body effectively expands, the rupture portion does not discharge air during the inflation process, so a generator with relatively smaller power can be selected without affecting the inflation speed of the airbag; and based on the design of the air guide portion, the air guide portion is convex during the exhaust process, thereby guiding the gas and discharging the gas to both sides of the airbag body, which can prevent passengers from accidentally touching the discharged gas and avoiding burns. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 It is a structural schematic diagram of an exhaust structure of a passenger airbag of the utility model;

[0014] Figure 2 For this utility model Figure 1 A rear view structural diagram of ;

[0015] Figure 3 It is a schematic diagram of the structure of the exhaust component of the utility model;

[0016] Figure 4 It is a schematic structural diagram of the exhaust component of the utility model after being folded in half. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] See also Figure 1-Figure 4 The utility model provides a technical solution for the exhaust structure of a passenger airbag: comprising an airbag body 1, an air inlet 2, and an exhaust hole 3; the air inlet 2 and the exhaust hole 3 are both arranged on the airbag body 1. When the airbag is detonated and filled, gas enters the airbag body 1 from the air inlet 2, causing the airbag body 1 to expand rapidly, and excess gas is discharged from the exhaust hole 3.

[0019] To solve the problem that gas is discharged from the exhaust hole 3 before the airbag body 1 is effectively inflated; an exhaust component 4 is arranged on the exhaust hole 3; the exhaust component 4 includes an air guide portion 41 and a rupture portion 42; the air guide portion 41 is arranged on the periphery of the exhaust hole 3, so that the gas discharged from the exhaust hole 3 enters the air guide portion 41; the rupture portion 42 is arranged on the exhaust port 410 of the air guide portion 41, so that the inside of the air guide portion 41 is sealed; the rupture portion 42 is torn by the impact of the gas in the air guide portion 41, so that the gas can be discharged from the rupture portion 42.

[0020] Furthermore, to facilitate the installation of the airbag body 1 and the exhaust member 4, the exhaust member 4 is in sheet form, thereby reducing the space occupied by the exhaust member 4; and a through hole 43 is provided in the middle of the exhaust member 4, and the through hole 43 corresponds to the exhaust hole 3; thus, the gas can be discharged from the exhaust hole 3 to the through hole 43.

[0021] The air guide portion 41 is formed based on the folding of the exhaust member 4. Specifically, the exhaust member 4 is folded in half and fixed on both sides by sewing with the reinforcement line A to form the air guide portion 41. Preferably, the folded edge of the exhaust member 4 is a hypotenuse L, so that the air guide portion 41 is trumpet-shaped. The side with a larger diameter of the air guide portion 41 is sewn and fixed on the exhaust hole 3, and the side with a smaller diameter serves as the exhaust port 410. In this way, when the gas is discharged from the exhaust hole 3 (through hole 43), the trumpet-shaped air guide portion 41 is easier to gather energy for subsequent breaking through the breach portion 42.

[0022] The breach portion 42 is also formed by folding the exhaust member 4 in half. Specifically, after the air guide portion 41 is formed, the exhaust port 410 of the air guide portion 41 is sewn through a weakened line B, so that the exhaust port 410 is closed to form the breach portion 42. In this way, when the airbag is inflated to an effective expansion, the excess gas will impact the breach portion 42, and the breach portion 42 is sewn with a weakened line B. Under the impact of the high-pressure gas, the weakened line B breaks, allowing the gas to be discharged from the exhaust hole 3.

[0023] Example 1

[0024] The exhaust member 4 is hexagonal in shape, and a circular through hole 43 corresponding to the exhaust hole 3 is reserved in the middle of the exhaust member 4 . The reinforcing wire A is used to sew along the through hole 43 so that the exhaust member 4 is sewn and fixed on the exhaust hole 3 .

[0025] The exhaust member 4 is folded in half vertically, and then two oblique sides L are sewn using the strengthening line A to form the air guide portion 41 ; and the exhaust port 410 is sewn using the weakening line B.

[0026] There are two exhaust holes 3 and two exhaust members 4 , which are located on two sides of the airbag body 1 .

[0027] Working principle: When the airbag is detonated and filled, gas enters the airbag body 1 from the air inlet 2, and part of the gas is discharged from the exhaust hole 3. However, the gas is blocked by the breach 42, so that the gas cannot be discharged, thereby continuing to fill the airbag body 1 and causing it to expand rapidly; until the airbag body 1 is effectively expanded, excess gas continues to be discharged from the exhaust hole 3, thereby breaking through the breach 42, allowing excess gas to be discharged from the exhaust port 410.

[0028] The strengthening wire A and weakening wire B mentioned in this patent are braided wires commonly used by people in this field, which can be directly purchased on the market. According to different car models and different detonators, corresponding braided wires can be selected for use.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An exhaust structure of a passenger airbag, comprising an airbag body, an air inlet hole, and an exhaust hole; the air inlet hole and the exhaust hole are both arranged on the airbag body; characterized in that: An exhaust component is arranged on the exhaust hole; the exhaust component includes an air guide portion and a breach portion; the air guide portion is arranged at the periphery of the exhaust hole so that the gas discharged from the exhaust hole enters the air guide portion; the breach portion is arranged on the exhaust port of the air guide portion so that the inside of the air guide portion is sealed; the breach portion will be torn by the impact of the gas in the air guide portion, so that the gas can be discharged from the breach portion.

2. The exhaust structure of a passenger airbag according to claim 1, characterized in that: The exhaust member is in a sheet shape and has a through hole in the middle, and the through hole corresponds to the exhaust hole.

3. The exhaust structure of a passenger airbag according to claim 2, characterized in that: The exhaust member is folded in half and is sewn and fixed at both side edges by reinforcing lines to form an air guide portion.

4. The exhaust structure of a passenger airbag according to claim 3, characterized in that: The folded edge of the exhaust member is an oblique edge, so that the air guide part forms a trumpet shape. The side with a larger diameter of the air guide part is sewn and fixed on the exhaust hole, and the side with a smaller diameter serves as the exhaust port.

5. The exhaust structure of a passenger airbag according to claim 4, characterized in that: The exhaust port is sewn through a weakened line so that the exhaust port is closed to form a breach portion.

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