KR-102964901-B1 - ROOF MOUNTING AIRBAG

KR102964901B1KR 102964901 B1KR102964901 B1KR 102964901B1KR-102964901-B1

Abstract

A roof-mounted airbag is introduced comprising: an airbag cushion, the upper end of which is fixed to the roof of a vehicle and which deploys downward when gas is supplied inside; a vent hole formed in the airbag cushion and which allows gas inside the airbag cushion to be discharged to the outside when opened; and a blocking tether, the other end of which is fixed to the roof of a vehicle and which closes the vent hole when tension is applied.

Inventors

정가람
황보상원
박해권

Assignees

현대모비스 주식회사

Dates

Publication Date: 20260513
Application Date: 20200717

Claims (10)

An airbag cushion whose upper part is fixed to the roof of a vehicle and which deploys downward when gas is supplied to the interior; A vent hole formed in the airbag cushion and allowing gas inside the airbag cushion to be discharged to the outside when opened; and It includes a blocking tether, one end of which is fixed to the roof of the vehicle, and the other end of which is connected to the vent hole to close the vent hole when tension is applied; The airbag cushion is formed with a shape that increases in length from top to bottom in the direction of the front and rear occupants as it is attached to the roof, indents inward at the height of the front and rear occupants' heads, and deploys by protruding toward the occupants at the height of the front and rear occupants' upper bodies. A roof-mounted airbag characterized by the other end of the blocking tether being extended to a position where the occupant's head contacts when the occupant is loaded in the front or rear, thereby reducing the tension of the blocking tether and opening the vent hole when the occupant's head is loaded onto the airbag cushion.
In claim 1, A roof-mounted airbag characterized in that the other end of the blocking tether extends along the outer side of the vent hole and closes the vent hole when tension is applied to the blocking tether.
In claim 1, The other end of the blocking tether extends outside the airbag cushion and is provided with a cover that covers the vent hole outside the airbag cushion, and A roof-mounted airbag characterized by the cover covering the vent hole from the outside of the airbag cushion when tension is applied to the blocking tether.
In claim 1, A roof-mounted airbag characterized by a vent hole formed at a position spaced forward or rearward relative to one end of a fixed blocking tether and the longitudinal direction of the vehicle.
In claim 1, A roof-mounted airbag characterized by the airbag cushion having a shape that protrudes toward the upper body of the occupant located at the front and rear relative to the longitudinal direction of the vehicle when deployed.
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In claim 1, An operating device that mediates the connection between one end of a blocking tether and the roof of a vehicle, and releases the connection with the one end of the blocking tether or the roof of a vehicle upon operation; and A loop-mounted airbag characterized by further including a controller that operates an actuation device after a preset time from the time of a vehicle collision or deployment of the airbag cushion.
In claim 7, A roof-mounted airbag characterized by the preset time being set differently depending on the vehicle collision conditions, airbag cushion conditions, or blocking tether conditions.
In claim 1, A loop-mounted airbag characterized by further including an inflator that generates gas and supplies the generated gas into the interior of the airbag cushion.
In claim 1, A loop-mounted airbag characterized in that the vent hole is closed prior to the deployment of the airbag cushion and is opened by the internal pressure of the airbag cushion or maintained in a closed state by the tension of the blocking tether.

Description

Roof Mounting Airbag The present invention relates to a roof-mounted airbag, and more specifically, to an airbag mounted on the roof of a vehicle and deployed downward. Generally, vehicles are equipped with safety devices to safely protect occupants from accidents such as collisions and rollovers. These devices include seat belts, which restrain the occupant's body, and airbags, which cushion the impact of the occupant striking the vehicle body. These airbags are installed in various parts of the vehicle as needed, such as the driver's airbag located in the steering wheel and the passenger airbag located in the instrument panel. Recently, with the increase in autonomous vehicles, swivel seats are being adopted for passenger convenience. However, depending on the adjustment position, these swivel seats can cause front and rear passengers to face each other or in opposite directions, raising the possibility of collision between passengers in the event of a collision. In addition, if there are objects that fly or slide without restraint during a vehicle collision, there is a risk of injury to the occupants. To prevent this, center airbags capable of separating the front and rear spaces are being applied; however, conventional center airbags were designed under the assumption that they are supported by the back of the front seat, and thus lacked independent support, limiting their ability to protect passengers. In addition, if a passenger is loaded while the center airbag is rotated toward the passenger, there is a risk of neck injury. 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 illustrates the deployed state of a loop-mounted airbag according to one embodiment of the present invention. FIG. 2 illustrates a state in which the vent hole of a loop-mounted airbag is opened by loading a passenger according to one embodiment of the present invention. FIG. 3 illustrates the combination of a vent hole and a blocking tether according to one embodiment of the present invention. FIG. 4 illustrates the combination of a vent hole and a blocking tether according to another embodiment of the present invention. FIG. 5 illustrates the deployed state of a loop-mounted airbag according to one embodiment of the present invention. Specific structural or functional descriptions of 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 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 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 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, nu