Curtain airbag for vehicle

Abstract

According to the present invention, a curtain airbag device for a vehicle is introduced, comprising: an airbag cushion that deploys from the roof of the vehicle to the side of the vehicle; a fixing part that fixes the folded airbag cushion to the roof side; an inflator that injects gas into the airbag cushion to deploy the airbag cushion; and a twist prevention part, one end of which is connected to the inflator or adjacent to the inflator and the other end of which is connected to the fixing part to apply tension when the airbag cushion is folded to prevent the airbag cushion from twisting.

Description

Technology Field

[0001] The present invention relates to a curtain airbag device for a vehicle, and more specifically, to a technology for preventing twisting during the assembly of a curtain airbag. Background Technology

[0003] Generally, a vehicle airbag system is a safety device that deploys airbag cushions to mitigate impact and prevent passengers from being ejected from the vehicle body in the event of a collision. Vehicle airbag systems are classified into driver airbags (DAB) and passenger airbags (PAB) that protect front-seat passengers in the event of a frontal collision, and side airbags (SAB) and curtain airbags (CAB) that protect the sides of passengers in the event of a side collision.

[0004] Conventional curtain airbag devices are assembled to roll upward and be attached to and secured to the side of the vehicle's roof.

[0005] At this time, due to a worker's mistake, excessive rolling occurred, causing twisting near the inflator, and there was a problem where the curtain airbag device could not deploy normally when twisting occurred.

[0007] 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. Prior art literature

[0009] (Patent Document 0001) KR 10-2018-0024871 A The problem to be solved

[0010] The present invention is proposed to solve these problems, and its purpose is to prevent the airbag cushion from twisting by providing a member that connects a connecting tab connecting the airbag cushion to the vehicle body and an inflator, thereby applying tension to the airbag cushion in a direction opposite to the rolling direction when the airbag cushion is rolled and attached to the vehicle body. means of solving the problem

[0012] A curtain airbag device for a vehicle according to the present invention comprises: an airbag cushion that deploys from the roof of the vehicle to the side of the vehicle; a fixing part that fixes the folded airbag cushion to the roof side; an inflator that injects gas into the airbag cushion to deploy the airbag cushion; and a twist prevention part, one end of which is connected to the inflator or adjacent to the inflator and the other end of which is connected to the fixing part to apply tension when the airbag cushion is folded to prevent the airbag cushion from twisting.

[0013] It further includes a connecting tab that connects the fixed part and the airbag cushion and is sewn together with the airbag cushion, and the other end of the anti-twist part can be connected to the connecting tab.

[0014] The other end of the anti-twist part is connected to the body side of the connection tab, and the first end can be connected to the body side of the inflator.

[0015] The other end of the anti-twist part can be connected by a connecting tab and a sewing joint.

[0016] A plurality of fixed members are spaced apart and arranged along the side of the vehicle's roof, and an inflator is positioned between the fixed members. The anti-twisting member may include a first anti-twisting member, one end of which is connected to the front of the inflator and the other end of which is connected to a fixed member located in front of the inflator, and a second anti-twisting member, one end of which is connected to the rear of the inflator and the other end of which is connected to a fixed member located behind the inflator.

[0017] The anti-twist part can be manufactured from non-woven fabric.

[0018] It further includes a coupling part that connects the inflator to the vehicle body; and the anti-twist part may have one end connected to the coupling part.

[0019] The anti-twist part can be connected to the vehicle body together with the connecting part by bolting one end to the connecting part.

[0020] The anti-twist part can be connected to the joint part through a fastener at one end.

[0021] The anti-twist part can be manufactured in a different color from the airbag cushion. Effects of the invention

[0023] By providing a member that connects a connecting tab connecting an airbag cushion to a vehicle body and an inflator according to the present invention, when the airbag cushion is rolled and connected to the vehicle body, tension is applied to the airbag cushion in a direction opposite to the rolling direction, thereby preventing the airbag cushion from twisting near the inflator.

[0024] In addition, when the anti-twist part is attached to the inflator, it can be combined with the bolting connection of the part that attaches the inflator to the vehicle body, thereby having the effect of reducing costs.

[0025] In addition, when the anti-twist part is attached to the inflator, connecting it to the joint where the inflator is attached to the vehicle body via a fastener has the effect of improving convenience during manufacturing. Brief explanation of the drawing

[0027] FIG. 1 is a side view of an airbag cushion of a vehicle curtain airbag device according to the present invention in a folded state. FIG. 2 is a side view of the airbag cushion of a vehicle curtain airbag device according to the present invention in an deployed state. FIG. 3 is a first embodiment of a vehicle curtain airbag device according to the present invention, FIG. 4 is a cross-sectional view of AA of FIG. 3, FIG. 5 is a second embodiment of a vehicle curtain airbag device according to the present invention. Figure 6 is a cross-sectional view of the BB in Figure 5. Specific details for implementing the invention

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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 dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this specification.

[0034] The present invention will be described in detail below by explaining preferred embodiments of the invention with reference to the attached drawings. Identical reference numerals in each drawing indicate identical components.

[0035] FIG. 1 is a side view of the airbag cushion (210) of the vehicle curtain airbag (200) device according to the present invention in a folded state, FIG. 2 is a side view of the airbag cushion (210) of the vehicle curtain airbag (200) device according to the present invention in an unfolded state, FIG. 3 is a first embodiment of the vehicle curtain airbag (200) device according to the present invention, FIG. 4 is a cross-sectional view AA of FIG. 3, FIG. 5 is a second embodiment of the vehicle curtain airbag (200) device according to the present invention, and FIG. 6 is a cross-sectional view BB of FIG. 5.

[0036] Referring to FIGS. 1 and 2, a preferred embodiment of a vehicle curtain airbag (200) device according to the present invention will be examined.

[0037] The curtain airbag (200) of a vehicle according to the present invention is mounted on the side of the roof of the vehicle to protect the side of a passenger in the event of a side collision or an oblique collision of the vehicle, and the airbag cushion (210) deploys downward.

[0038] At this time, the airbag cushion (210) can be folded or rolled and mounted on the roof side. However, due to a worker's error, the folding or rolling of the airbag cushion (210) becomes excessive, causing twisting, and there was a problem in that the airbag cushion (210) could not deploy normally when twisting occurred.

[0039] To solve this, the present invention was devised.

[0040] The vehicle curtain airbag (200) device according to the present invention specifically comprises: an airbag cushion (210) that deploys from the roof of the vehicle to the side of the vehicle; a fixing part (220) that fixes the folded airbag cushion (210) to the roof side; an inflator (100) that injects gas into the airbag cushion (210) to deploy the airbag cushion (210); and a twist prevention part (300) in which one end is connected adjacently to the inflator (100) or the inflator (100) and the other end is connected to the fixing part (220) to apply tension when the airbag cushion is folded to prevent the airbag cushion from twisting.

[0041] The airbag cushion (210) can be folded or rolled so that its area is reduced, and then fixed by a fixing part (220) and placed on the side of the roof.

[0042] The inflator (100) is positioned on the roof side of the vehicle together with the airbag cushion (210) and is connected to the airbag cushion (210) to inject gas into the interior of the airbag cushion (210) when a side collision or an oblique collision occurs, thereby deploying the airbag cushion (210) downward to surround the interior side of the vehicle, and can protect against injuries sustained by a side collision or by a passenger colliding with the side of the vehicle due to the deployment of the airbag cushion (210).

[0043] One end of the anti-twisting part (300) is connected to a fixing part (220) that fixes the folding or rolling of the airbag cushion (210), and the other end is connected to an inflator (100) or an adjacent position of the inflator (100) so as to apply tension to the folded or rolled airbag cushion (210).

[0044] Through this, the anti-twisting part (300) applies tension in the opposite direction to the folding or rolling direction to the airbag cushion (210) that has been folded or rolled, thereby preventing the airbag cushion (210) from being folded or rolled further, and thus preventing the airbag cushion (210) from being folded or rolled further, has the effect of preventing the airbag cushion (210) from being twisted.

[0045] In addition, as the anti-twisting part (300) is coupled to the inflator (100) or adjacent to the inflator (100), the airbag cushion (210) is prevented from twisting in the adjacent part of the inflator (100), thereby allowing the gas of the inflator (100) to be injected normally into the airbag cushion (210), and thereby the airbag cushion (210) can be deployed quickly in the event of a collision with the vehicle.

[0046] The fixed part (220) and the airbag cushion (210) are connected, and the connecting tab (221) sewn together with the airbag cushion (210) is further included, and the other end of the anti-twist part (300) can be connected to the connecting tab (221).

[0047] The fixed part (220) is joined to the roof side of the vehicle body in a manner such as bolting (410), riveting, or welding, and the connecting tab (221) is connected to the fixed part (220) and can be connected to the airbag cushion (210).

[0048] Generally, the airbag cushion (210) is made of fabric material and can be connected to the fixing part (220) through a connecting tab (221) and a sewing connection.

[0049] The airbag cushion (210) can be rolled and folded from bottom to top, and when the rolling of the airbag cushion (210) is completed, the connecting tab (221) can be rolled together in the direction in which the airbag cushion (210) is rolled.

[0050] At this time, the other end of the anti-twist part (300) is sewn together with the airbag cushion (210) on the outside of the connecting tab (221), and the one end of the anti-twist part (300) is connected to the inflator (100) side so that tension can be applied to the connecting tab (221) and the airbag cushion (210).

[0051] Through this, the anti-twisting part (300) applies tension to the airbag cushion (210) and the connecting tab (221), thereby preventing the airbag cushion (210) from rolling only by a preset amount and preventing further rolling, thus preventing the airbag cushion (210) from twisting in the adjacent part of the inflator (100).

[0052] The other end of the anti-twist part (300) is connected to the body side of the connecting tab (221), and the first end can be connected to the body side of the inflator (100).

[0053] The airbag cushion (210) can be rolled toward the interior of the vehicle and secured to the roof so that it can be quickly deployed upon deployment. The anti-twisting part (300) has one end connected to the body side of the inflator (100) and the other end connected to the outside of the connection tab (221) connected to the airbag cushion (210), thereby applying tension in the opposite direction to the rolling direction of the airbag cushion (210). When gas is injected into the airbag cushion (210) from the inflator (100), the rolling is released and it deploys downward. At this time, since the anti-twisting part (300) is positioned toward the body side, it can be prevented from interfering with the deployment of the airbag cushion (210).

[0054] This allows gas to be injected directly into the airbag cushion (210) upon collision of the vehicle, and enables the airbag cushion (210) to deploy quickly.

[0055] The other end of the anti-twist part (300) can be connected to the connecting tab (221) by sewing.

[0056] The airbag cushion (210) is made of fabric material, and the connecting tab (221) and the anti-twist part (300) are also made of fabric material so that when the airbag cushion (210) is sewn and connected to the connecting tab (221), the other end of the anti-twist part (300) can be simultaneously sewn and connected to the connecting tab (221).

[0057] Through this, the airbag cushion (210), connecting tab (221), and anti-twist part (300) are combined as a single unit, making the combination simpler and reducing costs.

[0058] A plurality of fixed members (220) are spaced apart and arranged along the side of the roof of the vehicle, and an inflator (100) is arranged between the fixed members (220). The anti-twisting member (300) may include a first anti-twisting member (310) in which one end is connected to the front of the inflator (100) and the other end is connected to the fixed member (220) located in front of the inflator (100), and a second anti-twisting member (320) in which one end is connected to the rear of the inflator (100) and the other end is connected to the fixed member (220) located behind the inflator (100).

[0059] As illustrated in FIGS. 1 and 2, in one embodiment of the present invention, a first anti-twist part (310) connected to the front part of the inflator (100) and a second anti-twist part (320) connected to the rear part of the inflator (100) may be provided.

[0060] As the anti-twisting part (300) is provided in multiple units, such as a first anti-twisting part (310) and a second anti-twisting part (320), and is positioned at the front and rear of the inflator (100), the airbag cushion (210) can be prevented from twisting at the front and rear of the inflator (100). Accordingly, when the inflator (100) injects gas into the airbag cushion (210), the airbag cushion (210) does not twist, thereby preventing premature deployment of the airbag cushion (210) and allowing the airbag cushion (210) to deploy quickly.

[0061] The anti-twist part (300) can be made of non-woven fabric.

[0062] The anti-twist part (300) is made of a material such as non-woven fabric, so that when the airbag cushion (210) is deployed, if the anti-twist part (300) interferes with the deployment of the airbag cushion (210), it can be quickly cut by the deployment pressure of the airbag cushion (210).

[0063] Through this, the anti-twist part (300) is cut without resisting the deployment of the airbag cushion (210), thereby allowing the airbag cushion (210) to be deployed quickly.

[0064] It further includes a coupling part (120) that connects the inflator (100) to the vehicle body, and the anti-twist part (300) can have one end connected to the coupling part (120).

[0065] The inflator (100) may be provided with a gas injection part (110) for injecting gas into the airbag cushion (210), and a coupling part (120) for coupling the gas injection part (110) to the vehicle body.

[0066] The anti-twisting part (300) can be fixed to the coupling part (120) that connects the inflator (100) to the vehicle body, and thereby one end of the anti-twisting part (300) can be easily connected to the inflator (100) side.

[0067] The connecting part (120) is a bracket that connects the inflator (100) to the roof of the vehicle body and can be connected to the vehicle body by bolting (410). By connecting the anti-twist part (300) to the connecting part (120), it is not necessary to add a separate connecting part (120) to the inflator (100), thereby reducing the cost.

[0068] The anti-twist part (300) can be joined to the vehicle body together with the joining part (120) by bolting (410) to the joining part (120).

[0069] As illustrated in the first embodiment of the present invention, one end of the anti-twist portion (300) can be joined to the vehicle body by bolting (410) when the connecting portion (120) is joined to the vehicle body by bolting (410).

[0070] This allows for cost reduction by eliminating the need to manufacture a separate part that combines the anti-twist part (300).

[0071] The anti-twist part (300) can be connected to the connecting part (120) through a fastener (420) at one end.

[0072] As shown in the second embodiment of the present invention, one end of the anti-twist portion (300) can be connected to the connecting portion (120) by a fastener (420).

[0073] A separate fixing hole may be provided in the connecting part (120) to fix a fastener (420), and the fastener (420) may be inserted simultaneously into one end of the anti-twist part (300) and the fixing hole to connect one end of the anti-twist part (300) to the inflator (100).

[0074] Through this, if the anti-twist part (300) is damaged and needs to be replaced, the fastener (420) can be removed and only the anti-twist part (300) can be replaced, thereby improving the convenience of assembly or maintenance.

[0075] The anti-twist part (300) can be manufactured in a different color from the airbag cushion (210).

[0076] The anti-twisting part (300) is manufactured in a different color from the airbag cushion (210) so that when the airbag cushion (210) is rolled or folded, it can be twisted together with the airbag cushion (210). By manufacturing it in a different color from the airbag cushion (210), the operator can recognize the situation where the airbag cushion (210) is twisted, thereby having the effect of preventing the airbag cushion (210) from twisting.

[0077] In addition, the anti-twisting part (300) is connected to the inflator (100) when folding or rolling is completed and is installed to apply tension to the airbag cushion (210). It is manufactured in a different color from the airbag cushion (210) so that the operator can clearly recognize whether it is installed. When the anti-twisting part (300) is installed normally, the airbag cushion (210) cannot be installed in a twisted manner, thereby having the effect of preventing the airbag cushion (210) from twisting.

[0079] Although specific embodiments of the invention have been illustrated and described, it will be obvious to those skilled in the art that the invention can be modified and changed in various ways without departing from the technical spirit of the invention as provided by the following claims. Explanation of the symbols

[0081] 100 : Inflator 110: Gas injection part 120 : Joint 200 : Curtain airbag 210: Airbag cushion 220 : Fixed part 221 : Connection Tab 300 : Anti-twist part 310: 1st anti-twist part 320 : 2nd anti-twist part 410 : Vaulting 420 : Fastener

Claims

Claim 1 A vehicle curtain airbag device comprising: an airbag cushion that deploys from the roof of a vehicle to the side of a vehicle; a fixing part that fixes the folded airbag cushion to the roof side; an inflator that injects gas into the airbag cushion to deploy the airbag cushion; and a twist prevention part having one end connected to the inflator or adjacent to the inflator and the other end connected to the fixing part to apply tension when the airbag cushion is folded to prevent the airbag cushion from twisting during folding; and further comprising a connecting tab that connects the fixing part to the airbag cushion and is sewn together with the airbag cushion, wherein the other end of the twist prevention part is connected to the connecting tab. Claim 2 delete Claim 3 A vehicle curtain airbag device according to claim 1, characterized in that the other end of the anti-twist portion is connected to the vehicle body side of the connecting tab, and the first end is connected to the vehicle body side of the inflator. Claim 4 A vehicle curtain airbag device according to claim 1, characterized in that the other end of the anti-twist portion is connected by a connecting tab and a sewing joint. Claim 5 A curtain airbag device for a vehicle, comprising: an airbag cushion that deploys from the roof of the vehicle to the side of the vehicle; a fixing part that fixes the folded airbag cushion to the roof side; an inflator that injects gas into the airbag cushion to deploy the airbag cushion; and a twist prevention part that applies tension when the airbag cushion is folded, with one end connected to the inflator or adjacent to the inflator and the other end connected to the fixing part to prevent the airbag cushion from twisting during folding; wherein a plurality of fixing parts are spaced apart and arranged along the side of the vehicle's roof, and the inflator is arranged between the fixing parts; and the twist prevention part includes a first twist prevention part, with one end connected to the front of the inflator and the other end connected to the fixing part located in front of the inflator, and a second twist prevention part, with one end connected to the rear of the inflator and the other end connected to the fixing part located behind the inflator. Claim 6 A vehicle curtain airbag device according to claim 1, characterized in that the anti-twist portion is made of a non-woven fabric material. Claim 7 A curtain airbag device for a vehicle according to claim 1, further comprising a coupling part for coupling an inflator to a vehicle body, wherein one end of the anti-twist part is connected to the coupling part. Claim 8 A curtain airbag device for a vehicle according to claim 7, characterized in that one end of the anti-twist portion is coupled to the vehicle body together with the coupling portion by bolting to the coupling portion. Claim 9 A vehicle curtain airbag device according to claim 7, characterized in that one end of the anti-twist portion is connected to the connecting portion through a fastener. Claim 10 A vehicle curtain airbag device according to claim 1, characterized in that the anti-twist part is manufactured in a different color from the airbag cushion.

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