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KR-102964904-B1 - SIDE AIR BAG APPARATUS FOR VEHICLE

KR102964904B1KR 102964904 B1KR102964904 B1KR 102964904B1KR-102964904-B1

Abstract

The present invention relates to a side airbag device for a vehicle, comprising a first cushion (20) that covers and protects the upper body area (2) of a passenger who is in a relaxed mode by tilting the seat back (1) backward, a second cushion (30) that covers and protects the head area (3), and a valve member (50) that opens and closes a vent hole (40) connecting the first cushion (20) and the second cushion (30), thereby enabling effective and sufficient protection of both the upper body area (2) and the head area (3) of a passenger who is in a relaxed mode.

Inventors

  • 송지운
  • 박해권

Assignees

  • 현대모비스 주식회사

Dates

Publication Date
20260513
Application Date
20200624

Claims (10)

  1. An inflator that is fixedly installed in the seat back and generates airbag gas; A first cushion that is folded while hidden inside the seat back and then unfolds to protrude toward the side of the seat back by the pressure of airbag gas generated from an inflator to protect the upper body area of a passenger in a relax mode; and A second cushion configured independently of the first cushion and connected to the first cushion, which protects the head area of a passenger in a relax mode by deploying with the pressure of airbag gas received through the first cushion; One vent hole connecting the interiors of the first cushion and the second cushion and transferring airbag gas from the first cushion to the second cushion; and It includes a valve member that operates to open and close a vent hole according to the pressure of the first cushion or the pressure of the second cushion; The above valve member is located within the second cushion, and both ends are sewn together with the second cushion; A vehicle side airbag device characterized by the fact that, based on two sewing lines in which both ends of the valve member and the second cushion are joined, the length L1 of the valve member existing between the two sewing lines is formed to be longer than the length L2 of the second cushion existing between the two sewing lines while including a vent hole.
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  4. In claim 1, A vehicle side airbag device characterized in that the upper body area of the passenger protected by the first cushion is the area from the shoulder to the pelvis.
  5. In claim 1, A vehicle side airbag device characterized in that the passenger's head area protected by the second cushion above is an area including the passenger's neck.
  6. In claim 1, A vehicle side airbag device characterized in that the above valve member is a flap-type valve in which the intermediate portion between the two ends opens and closes a vent hole according to the pressure of the first cushion or the pressure of the second cushion.
  7. In claim 6, A vehicle side airbag device characterized in that the above valve member is formed of a non-woven fabric material capable of being sewn together with a second cushion.
  8. In claim 6, A vehicle side airbag device characterized in that when the first cushion is deployed by airbag gas generated from the inflator and the pressure of the first cushion increases as the passenger's upper body presses the first cushion, the valve member operates to open the vent hole by the pressure transmitted from the first cushion, and the airbag gas of the first cushion is supplied to the second cushion through the vent hole so that the second cushion is deployed.
  9. In claim 8, A vehicle side airbag device characterized in that when the pressure of the second cushion increases as the passenger's head presses the second cushion while the second cushion is deployed, the valve member operates to seal the vent hole by the pressure of the second cushion, and the first cushion and the second cushion are disconnected by the valve member so that their internal pressures are maintained individually.
  10. In claim 9, A vehicle side airbag device characterized by the above valve member sealing the vent hole when the pressure of the second cushion increases as the passenger's head presses the second cushion.

Description

Side Air Bag Apparatus for Vehicle The present invention relates to a vehicle side airbag device, and more specifically, to a vehicle side airbag device equipped with dual chambers to effectively protect passengers in a relaxed mode. Vehicles are equipped with various types of airbags to protect the safety of occupants; among these, the side airbag is a device in which an airbag cushion is installed inside the seat back and deploys to cover the passenger's side in the event of a side collision to protect the passenger. Meanwhile, when autonomous driving situations become commonplace where the vehicle finds its way to a destination on its own without the driver directly operating the steering wheel, accelerator pedal, and brakes, passengers in the vehicle, including the driver, can select a relax mode to rest comfortably without paying attention to driving. In particular, when a passenger reclines the seatback to assume a relaxed position, conventional side airbags or curtain airbags have the disadvantage that the deployment range of the airbag cushion is narrow, making it impossible to effectively protect the entire upper body, including the passenger's head, from a side collision. In order to expand the protection area to protect the head of a passenger in a relaxed mode using existing side airbags or curtain airbags, there is a disadvantage that a large-volume airbag cushion must be used and a large-capacity inflator must also be used. 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 drawing of a vehicle side airbag device according to the present invention in a deployed state from a seat back. FIG. 2 is a drawing for explaining a side airbag device according to the present invention, FIG. 3 is a drawing for explaining a valve member according to the present invention, FIG. 4 is a drawing for explaining the deployment process of a side airbag device according to 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 they include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. Terms such as "first," "second," etc., may be used to describe various components, but said components shall 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 merely for describing 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 described 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 terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictio