A side curtain airbag to prevent rear passengers from floating up

Abstract

This utility model discloses a side curtain airbag for preventing rear seat passengers from lifting off the roof. It includes a side curtain airbag installed inside the car roof and a gas generator installed inside the side curtain airbag. The side curtain airbag is generally rectangular, with an air intake chamber connected to the gas generator formed in its upper central part. A front head protection chamber and a front window covering chamber are formed in the front part of the side curtain airbag; a rear head protection chamber and a rear window covering chamber are formed in the rear part of the side curtain airbag; and an upper ventilation channel and a lower ventilation channel are formed in the middle of the side curtain airbag. This utility model, by changing the inflation path of the side curtain airbag, makes the side curtain airbag deployment more stable, preventing rear seat passengers from lifting off the roof.

Description

Technical Field

[0001] This utility model relates to the field of automotive airbag technology, and in particular to a side curtain airbag that prevents the rear seats from being lifted up. Background Technology

[0002] Side curtain airbags are typically installed on the upper sides of the car's roof. When a car experiences a side collision of a certain severity, the airbag controller triggers the side curtain airbag to ignite. Upon receiving the ignition signal, the gas generator inside the airbag produces a large amount of gas, causing the side curtain airbag to deploy downwards from the roof in a very short time. This absorbs the impact energy of the collision, effectively protecting the occupant's head and preventing or reducing the severity of injury.

[0003] To prevent occupants from being thrown out of the window, side curtain airbags need to cover the windows. The corresponding side curtains have a larger Z-axis height and are wider. During deployment, the side curtains are easily affected by interior trim and can float into the vehicle. In the event of an offset collision, occupants may crawl into the gap between the floating side curtain and the vehicle body, causing the side curtain to fail to protect their heads and resulting in injury.

[0004] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a side curtain airbag that prevents the rear seats from floating up, which is designed to address the shortcomings of the existing technology. When deployed, it remains stable and prevents occupants from sliding into the gap between the side curtain airbag and the vehicle body, thus better protecting the occupants' heads and avoiding injuries.

[0006] The technical problem to be solved by this utility model can be achieved by the following technical solution:

[0007] A side curtain airbag for preventing rear seats from lifting off includes a side curtain airbag installed in the roof of a vehicle and a gas generator installed in the side curtain airbag.

[0008] The side curtain air bag is roughly rectangular, with an air intake chamber connected to the gas generator formed in the upper part of its middle section.

[0009] The front part of the side curtain airbag has a front head protection chamber and a front cover window chamber. The front cover window chamber is located in front of the front head protection chamber and communicates with the front head protection chamber.

[0010] The rear side of the side curtain airbag has a rear head protection chamber and a rear cover window chamber. The rear head protection chamber is located behind the rear cover window chamber and communicates with the rear cover window chamber.

[0011] The side curtain airbag has an upper ventilation channel and a lower ventilation channel in its middle. The middle part of the upper ventilation channel is connected to the air intake chamber, and its front end and rear end are connected to the front head protection chamber and the rear head protection chamber. The front end and rear end of the lower ventilation channel are connected to the front head protection chamber and the rear cover window chamber.

[0012] In a preferred embodiment of this utility model, an arc-shaped air guide seam is provided in the rear cover window cavity of the side curtain airbag between the upper ventilation channel and the rear head protection cavity. One end of the arc-shaped air guide seam extends to the rear end of the upper ventilation channel, and the other end extends to the middle of the connection between the rear head protection cavity and the rear cover window cavity, so that the gas in the upper ventilation channel inflates the rear head protection cavity, and at the same time, the rear head protection cavity and the rear cover window cavity are connected at the gap of the arc-shaped air guide seam.

[0013] In a preferred embodiment of the present invention, a middle dead zone is formed in the middle of the side curtain air bag between the upper ventilation channel and the lower ventilation channel.

[0014] In a preferred embodiment of this utility model, the widths of the upper ventilation channel, the intermediate dead zone, and the lower ventilation channel are consistent.

[0015] In a preferred embodiment of the present invention, a plurality of disc-shaped dead zones are provided at intervals in the non-collision area within the side curtain airbag.

[0016] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: By changing the inflation path of the side curtain airbags, this utility model makes the side curtain airbags deploy more stably, preventing the rear seats from floating up. This utility model has a simple structure, strong versatility, and is suitable for widespread application. Attached Figure Description

[0017] 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 these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0020] See Figure 1 The figure shows a side curtain airbag designed to prevent rear seats from being lifted off the ground. It includes a side curtain airbag 100 installed in the car's roof and a gas generator (not shown) installed within the side curtain airbag 100. In the event of a side collision, the gas generator detonates, generating a large amount of gas that fills the side curtain airbag 100, causing it to deploy rapidly and protect the occupants' heads.

[0021] The side curtain airbag 100 is generally rectangular, with an air intake chamber 110 connected to a gas generator formed in the upper part of its middle section.

[0022] The front side curtain airbag 100 has a front head protection chamber 120 and a front cover window chamber 130 formed in the front side portion. The front cover window chamber 130 is located in front of the front head protection chamber 120 and communicates with the front head protection chamber 120.

[0023] The rear side of the side curtain airbag 100 has a rear head protection chamber 140 and a rear cover window chamber 150. The rear head protection chamber 140 is located behind the rear cover window chamber 150 and communicates with the rear cover window chamber 150.

[0024] The side curtain airbag 100 has an upper ventilation channel 160 and a lower ventilation channel 170 formed in its middle. The middle of the upper ventilation channel 160 is connected to the air intake chamber 110, and its front and rear ends are connected to the front head protection chamber 120 and the rear head protection chamber 140. The front and rear ends of the lower ventilation channel 170 are connected to the front head protection chamber 120 and the rear cover window chamber 150. A middle dead zone 180, i.e., an uninflated area, is formed in the middle of the side curtain airbag 100 between the upper ventilation channel 160 and the lower ventilation channel 170. The widths of the upper ventilation channel 160, the middle dead zone 180, and the lower ventilation channel 170 are consistent. The purpose of this is to keep the inflation speed of the upper ventilation channel 160 and the lower ventilation channel 170 relatively equal and to avoid the airbag floating up due to unbalanced inflation.

[0025] An arc-shaped air guide seam 101 is provided in the rear cover window chamber 150 of the side curtain airbag 100 between the upper ventilation channel 160 and the rear head protection chamber 140. One end of the arc-shaped air guide seam 101 extends to the rear end of the upper ventilation channel 160, and the other end extends to the middle of the connection between the rear head protection chamber 140 and the rear cover window chamber 150, so that the gas in the upper ventilation channel 160 inflates the rear head protection chamber 140, and at the same time, the rear head protection chamber 140 and the rear cover window chamber 150 are connected at the notch 101a of the arc-shaped air guide seam 101.

[0026] Within the side curtain airbag 100, several disc-shaped dead zones 190 are spaced apart in the non-collision area. Multiple disc-shaped dead zones 190 can be provided in non-collision areas such as the front overhang window chamber 130 and the rear overhang window chamber 150, while fewer disc-shaped dead zones 190 are provided in the non-collision areas of the front head protection chamber 120 and the rear head protection chamber 140. These disc-shaped dead zones 190 are arranged longitudinally, effectively limiting the airbag's volume and further preventing the side curtain airbag 100 from floating up.

[0027] The working principle of this utility model's side curtain airbag for preventing rear seats from lifting is as follows:

[0028] After the gas generator detonates, the large amount of gas produced enters the side curtain airbag 100 through the air intake section 200 and inflates the front head protection chamber 120 and the rear head protection chamber 140 respectively along the upper ventilation channel 160. Due to the action of the arc-shaped air guide seam 101, the gas can quickly inflate the rear head protection chamber 140 and rapidly reach the tail end of the side curtain airbag 100. Simultaneously, under the action of the arc-shaped air guide seam 101, the inflation process of the rear head protection chamber 140 is from top to bottom, with no obstruction, making it less likely to float during inflation. Furthermore, the gas passes through the front head protection chamber 120 and then re-enters the rear cover window chamber 150 and the rear head protection chamber 140 through the lower ventilation channel 170. Since the widths of the upper ventilation channel 160 and the lower ventilation channel 170 are roughly the same, it avoids the airbag floating due to uneven inflation.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A side curtain airbag for preventing rear seats from lifting off, comprising a side curtain airbag installed in the headliner of a vehicle and a gas generator installed in the side curtain airbag; characterized in that, The side curtain air bag is roughly rectangular, with an air intake chamber connected to the gas generator formed in the upper part of its middle section. The front part of the side curtain airbag has a front head protection chamber and a front cover window chamber. The front cover window chamber is located in front of the front head protection chamber and communicates with the front head protection chamber. The rear side of the side curtain airbag has a rear head protection chamber and a rear cover window chamber. The rear head protection chamber is located behind the rear cover window chamber and communicates with the rear cover window chamber. The side curtain airbag has an upper ventilation channel and a lower ventilation channel in its middle. The middle part of the upper ventilation channel is connected to the air intake chamber, and its front end and rear end are connected to the front head protection chamber and the rear head protection chamber. The front end and rear end of the lower ventilation channel are connected to the front head protection chamber and the rear cover window chamber.

2. The side curtain airbag to prevent rear seat updraft according to claim 1, wherein An arc-shaped air guide seam is provided in the rear cover window chamber of the side curtain airbag, located between the upper ventilation channel and the rear head protection chamber. One end of the arc-shaped air guide seam extends to the rear end of the upper ventilation channel, and the other end extends to the middle of the connection between the rear head protection chamber and the rear cover window chamber, so that the gas in the upper ventilation channel inflates the rear head protection chamber, and at the same time, the rear head protection chamber and the rear cover window chamber are connected at the gap of the arc-shaped air guide seam.

3. The side curtain airbag to prevent rear seat updraft according to claim 1, wherein A dead zone is formed in the middle of the side curtain air bag, between the upper and lower ventilation channels.

4. The side curtain airbag to prevent rear seat updraft according to claim 3, wherein The widths of the upper ventilation channel, the intermediate dead zone, and the lower ventilation channel are kept consistent.

5. The side curtain airbag to prevent rear seat updraft according to any one of claims 1 to 4, characterized by, Several disc-shaped dead zones are spaced apart in the non-collision area within the side curtain airbag.

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