KR-20260067669-A - VEHICLE CURTAIN AIRBAG APPARATUS

KR20260067669AKR 20260067669 AKR20260067669 AKR 20260067669AKR-20260067669-A

Abstract

The present invention relates to a vehicle curtain airbag device improved so that delayed deployment of the airbag cushion does not occur in order to rapidly implement a shape for protecting a passenger seated in the third row area. A vehicle curtain airbag device is installed on the side of a vehicle and includes an airbag cushion comprising an active area that is inflated by gas and a plurality of inactive areas into which gas is not introduced, and a control tether that assists in the deployment of the airbag cushion, wherein the control tether is characterized by connecting the plurality of inactive areas of the airbag cushion when a portion of the airbag cushion is folded.

Inventors

김주경
고병만

Assignees

현대모비스 주식회사

Dates

Publication Date: 20260513
Application Date: 20241106

Claims (10)

An airbag cushion installed on the side of a vehicle and comprising an active area that is inflated by gas and a plurality of inactive areas into which the gas is not introduced; and A control tether that assists in the deployment of the airbag cushion; comprising, The above control tether is, A vehicle curtain airbag device characterized by connecting a plurality of the inactive regions of the airbag cushion while a portion of the airbag cushion is folded.
In paragraph 1, The above airbag cushion is, A first main body portion forming an exterior; comprising, The first main body comprises: a first panel that comes into contact with a passenger; and a second panel that is coupled to the first panel and does not come into contact with the passenger. A vehicle curtain airbag device characterized in that the above-described control tether is disposed on the second panel of the first main body portion of the airbag cushion.
In paragraph 2, The above airbag cushion is, A first joint portion disposed along the edge of the first main body portion and forming the activation region in the first main body portion; comprising A vehicle curtain airbag device characterized in that the control tether is positioned on the outer side of the first joint in the pre-folding state of the airbag cushion.
In paragraph 3, The above control tether includes a second main body portion forming an exterior; and The above airbag cushion is, A plurality of second joints disposed on the inner side of the first joint and forming a plurality of the inactive regions on the inner side of the first joint; comprising A vehicle curtain airbag device characterized in that the second main body of the control tether is fixed to one of the plurality of second joints of the airbag cushion after a part of the airbag cushion is folded.
In paragraph 4, The above control tether is, A vehicle curtain airbag device comprising: a slit portion formed in the second main body portion and assisting in the rupture of the second main body portion during the process in which the airbag cushion is deployed and a folded portion of the airbag cushion is unfolded.
In paragraph 5, The second main body of the above-mentioned control tether is, One end is fixed to the outside of the first joint of the airbag cushion, and A vehicle curtain airbag device characterized in that the slit portion of the control tether is positioned close to the end portion of the second main body portion.
In paragraph 5, A curtain airbag device for a vehicle, characterized in that the other end of the second main body portion of the control tether is coupled to one of a plurality of second joint portions of the airbag cushion when a part of the airbag cushion is folded.
An airbag cushion installed on the side of a vehicle and folded through a first folding process in which a portion is folded around a first direction and a second folding process in which it is rolled along a second direction as an axial direction after the first folding process; and A control tether coupled to the airbag cushion; comprising, The above airbag cushion includes an active region that is inflated by gas and a plurality of inactive regions in which the gas is not introduced, and A vehicle curtain airbag device characterized in that the control tether is fixed to one of the plurality of inactive regions of the airbag cushion after the first folding process of the airbag cushion is completed.
In paragraph 8, The above airbag cushion is, A first main body portion forming an exterior; comprising, The first main body comprises: a first panel that comes into contact with a passenger; and a second panel that is coupled to the first panel and does not come into contact with the passenger. A vehicle curtain airbag device characterized in that the above-described control tether is disposed on the second panel of the first main body portion of the airbag cushion.
In paragraph 8, The above airbag cushion is unfolded through a first unfolding process in which the rolled state is released through the second folding process, and a second unfolding process in which the folded state is released through the first folding process after the first unfolding process is completed. A vehicle curtain airbag device characterized in that the above-mentioned control tether breaks during the second unfolding process of the airbag cushion.

Description

Vehicle Curtain Airbag Apparatus The present invention relates to a curtain airbag device for a vehicle. Generally, vehicles are equipped with various types of airbag devices to protect passengers in the event of an accident. Among these, curtain airbag devices are mounted on the upper sides of multiple pillars positioned on the sides of the front and rear doors, respectively, and protect passengers by deploying airbag cushions that unfold downwards in the event of a vehicle rollover or side collision. A curtain airbag device may include an airbag cushion that deploys inside the passenger compartment and an inflator that generates gas internally and releases the gas into the airbag cushion. Among them, the airbag cushion has a rectangular shape that extends along the longitudinal direction of the vehicle (the direction from the passenger room toward the engine room or the opposite direction) because it covers the entire side of the passenger room, and the interior can be expanded entirely by injecting gas into it by an inflator. Recently, due to the increase in vehicle size, the length of the airbag cushion has increased. For example, vehicles designed to accommodate multiple passengers (e.g., vehicles with 6 or more seats) may be equipped with a first row area where the driver and front passenger seats are located, a second row area located behind the first row area, and a third row area. Accordingly, the airbag cushion has a length sufficient to cover the side of the third row area. In addition, the vehicle has trims that cover the pillars forming the vehicle's frame. The trims may include a front pillar trim placed in the first row area, a center pillar trim placed in the second row area, and a rear pillar trim placed in the third row area. Such trims have a shape that protrudes toward the interior of the passenger compartment along the width direction (the direction from the driver's seat toward the passenger seat or the opposite direction), which is a direction intersecting the length direction. Such trim may cause problems that hinder deployment when the airbag cushion deploys. For example, the airbag cushion has a first chamber, a second chamber, and a third chamber to cover the first, second, and third row areas of the vehicle, and the first, second, and third chambers are arranged sequentially along the longitudinal direction (the direction from the engine room toward the passenger room). Here, in order for the airbag cushion to be stored inside the vehicle, the third chamber is folded first toward the second chamber, and the first-folded airbag cushion is folded second by rolling in a direction intersecting the first-folding direction. Accordingly, when a conventional airbag cushion having the above structure is unfolded to deploy, it undergoes two unfolding processes. More specifically, it undergoes a first unfolding process in which it unfolds while rolling from the ceiling surface of the passenger room toward the floor surface, and a second unfolding process in which the third chamber part unfolds while rolling after the first unfolding process is completed. Therefore, the third chamber, which unfolds later than the other chambers, may come into contact with the side of the rear pillar trim when rolled to be released from the folded state. This may cause a delay in the unfolding of the third chamber, which may result in a problem where it cannot unfold within the time range intended during the design process. Therefore, there is an increasing need for research to prevent delayed deployment of the airbag cushion in order to rapidly implement a shape that protects passengers seated in the third row area. FIG. 1 is a drawing illustrating a curtain airbag device for a vehicle according to one embodiment of the present invention. Figure 2 is a diagram illustrating a control tether. Figure 3 is a front view of the control tether connected to the airbag cushion. Figure 4 is a planar view of the control tether attached to the airbag cushion. Figure 5 is a front view of a part of the airbag cushion folded. Figure 6 is a planar view of a part of the airbag cushion folded. The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated and described in the drawings. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be named the first component, and similarly, the first component may be named the second component. T