KR-102964899-B1 - SEAT AIRBAG DEVICE FOR VEHICLE

KR102964899B1KR 102964899 B1KR102964899 B1KR 102964899B1KR-102964899-B1

Abstract

A vehicle seat airbag device according to the present invention is introduced, comprising: a main chamber positioned on the vehicle seat at the side of a passenger and deployed toward the front of the vehicle when gas is injected into it; a sub-chamber connected to the front end of the main chamber and deployed in a direction intersecting the deployment direction of the main chamber when gas is injected into it; and an extension portion extended from the front end of the main chamber and connected to the upper or lower side of the sub-chamber.

Inventors

황보상원
이충령

Assignees

현대모비스 주식회사

Dates

Publication Date: 20260513
Application Date: 20200904

Claims (11)

A main chamber located on the vehicle seat at the side of the passenger and deployed toward the front of the vehicle when gas is injected into it; A sub-chamber connected to the front end of the main chamber and expanding in a direction intersecting the expansion direction of the main chamber when gas is injected into it; and Includes an extension portion that extends from the front portion of the main chamber and is connected to the upper or lower portion of the sub-chamber; The above-mentioned extension is separated by a main chamber and a sawing, and The above-mentioned extension is connected in a shape that blocks the lower side of the front end of the main chamber and the lower side of the front end of the sub-chamber connected to the main chamber, so that the side of the extension is supported inside the vehicle and configured to prevent the sub-chamber from moving in a direction intersecting the direction of development or in a direction opposite to the direction of development. A seat airbag device for a vehicle, characterized in that the above-mentioned extension extends from the lower front end of the main chamber toward the front of the vehicle and is connected in an upwardly inclined shape toward the lower front end of the sub-chamber.
In claim 1, A seat airbag device for a vehicle, further comprising a gas injection device connected to the rear end of the main chamber and injecting gas into the interior of the main chamber when operated.
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In claim 1, A seat airbag device for a vehicle, characterized in that the sub-chamber includes a first communication part connected to the main chamber, and after the main chamber is expanded by injecting gas, the gas is injected into the sub-chamber through the first communication part and expanded.
In claim 4, The expansion portion is formed in the shape of a chamber into which gas is injected and includes a second communication portion connected to a sub-chamber, and A seat airbag device for a vehicle characterized in that gas injected into the main chamber is injected into the sub-chamber through the first connecting part, and subsequently, gas injected into the sub-chamber is injected into the expansion part through the second connecting part.
In claim 1, A vehicle seat airbag device characterized by an extension portion that extends from the main chamber in a planar shape to connect the main chamber and the sub-chamber.
In claim 1, A vehicle seat airbag device characterized by including a diffuser located inside the main chamber that guides the flow direction of the gas so that the gas injected into the main chamber spreads in an up-and-down direction.
In claim 1, A seat airbag device for a vehicle characterized in that the main chamber, sub-chamber, and extension are each located on both sides of the seat and unfold symmetrically relative to each other.
In claim 1, A seat airbag device for a vehicle further comprising a support tether, wherein one end is connected to the seat and the other end is connected to the sub-chamber to support the sub-chamber when the sub-chamber is deployed.
In claim 9, The support tether includes an upper tether, one end of which is connected to the upper part of the seat back and the other end of which is connected to the upper part of the sub-chamber; and A seat airbag device for a vehicle characterized by including a lower tether, wherein one end is connected to the lower part of the seat back or the seat cushion and the other end is connected to the lower part of the sub-chamber.
In claim 9, A seat airbag device for a vehicle characterized in that the support tether is formed as a surface tether extending in a planar direction and is coupled in a state of line contact with the subchamber.

Description

Vehicle seat airbag device {SEAT AIRBAG DEVICE FOR VEHICLE} The present invention relates to a seat airbag device for a vehicle, and specifically to a technology for a seat airbag that deploys while enveloping a passenger. With the recent development of autonomous vehicles, it is predicted that the vehicle's interior space will also undergo significant changes. As autonomous driving becomes possible within the vehicle's interior, the area expected to change the most is the car seat. Traditional seats were limited to passive movements, such as height adjustment or seatback angle adjustment, while maintaining a fixed position primarily facing forward. However, with the advent of autonomous driving, drivers are freed from driving, allowing the seats to move actively to enable rear-facing or side-facing positions. Therefore, by developing a seat airbag composed of a main chamber capable of protecting the passenger's side and a sub-chamber that extends in a direction intersecting the direction of deployment from the front of the main chamber to protect the passenger's front, it was possible to effectively protect passengers against vehicle collisions occurring in various directions. However, there was a problem where, during the deployment of the main chamber and sub-chamber, the sub-chamber moved in a direction intersecting the deployment direction or in the opposite direction due to external impact. The matters described above as background technology are intended only to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. FIG. 1 is a perspective view of a seat airbag device of a vehicle according to an embodiment of the present invention, FIG. 2 is a plan view of a seat airbag device of a vehicle according to an embodiment of the present invention, FIG. 3 is a front view of a seat airbag device of a vehicle according to an embodiment of the present invention, FIG. 4 is a side view illustrating a first embodiment of a seat airbag device of a vehicle according to an embodiment of the present invention, FIG. 5 is a side view illustrating a second embodiment of a seat airbag device of a vehicle according to an embodiment of the present invention. Specific structural or functional descriptions of the embodiments of the present invention disclosed in this specification or application are merely illustrative for the purpose of explaining embodiments according to the present invention, and embodiments according to the present invention may be implemented in various forms and should not be interpreted as being limited to the embodiments described in this specification or application. Since embodiments according to the present invention may be subject to various modifications and may take various forms, specific embodiments are illustrated in the drawings and described in detail in this specification or application. However, this is not intended to limit embodiments according to the concept of the present invention to specific disclosed forms, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. Terms such as "first" and/or "second" may be used to describe various components, but said components should not be limited by said terms. For the sole purpose of distinguishing one component from another, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. Conversely, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions describing the relationship between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way. The terms used herein are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to specify the existence of the implemented features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Unless otherwise defined, all terms used herein, including technical or scientific