JP2021008207A - Air bag, air bag device, vehicle seat and air bag system - Google Patents

Air bag, air bag device, vehicle seat and air bag system Download PDF

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Publication number
JP2021008207A
JP2021008207A JP2019123086A JP2019123086A JP2021008207A JP 2021008207 A JP2021008207 A JP 2021008207A JP 2019123086 A JP2019123086 A JP 2019123086A JP 2019123086 A JP2019123086 A JP 2019123086A JP 2021008207 A JP2021008207 A JP 2021008207A
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airbag
air bag
shoulder
occupant
expands
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JP2021008207A5 (en
Inventor
匡俊 横田
Masatoshi Yokota
匡俊 横田
晃 小ヶ口
Akira Kogaguchi
晃 小ヶ口
陶山　洋士
Yoji Suyama
洋士 陶山
坂本　浩
Hiroshi Sakamoto
浩 坂本
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Joyson Safety Systems Japan GK
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Joyson Safety Systems Japan GK
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Priority to JP2019123086A priority Critical patent/JP2021008207A/en
Priority to PCT/JP2020/015929 priority patent/WO2021002076A1/en
Publication of JP2021008207A publication Critical patent/JP2021008207A/en
Publication of JP2021008207A5 publication Critical patent/JP2021008207A5/ja
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

To provide an air bag and an air bag device capable of restraining an occupant around the shoulders with an airbag from the upside, the lateral side and the front; and to provide a vehicle seat including the air bag device.SOLUTION: In an emergency such as a vehicle collision or rollover, an inflator 6 is activated, and an air bag 1R and 1L inflate. Top parts 2 of the air bag 1R and 1L are deployed over a shoulder part of the occupant H, side parts 4 are deployed from the shoulder to the sides of upper arms, and a front part 4 inflates from the shoulder to the front of an upper part of a right chest or a left chest. In the state where inflation is completed, the maximum thickness T1 of an upper part 4a of the front part 4 becomes 1.2 to 2.0 times of the maximum thickness T2 of a lower part 4b of the front part 4.SELECTED DRAWING: Figure 1

Description

本発明は、エアバッグ、エアバッグ装置、車両用シート及びエアバッグシステムに関し、特に、乗員をシートに拘束することに適した、エアバッグ、エアバッグ装置、このエアバッグ装置を備えた車両用シート及びエアバッグシステムに関する。 The present invention relates to airbags, airbag devices, vehicle seats and airbag systems, and is particularly suitable for restraining occupants on seats, airbags, airbag devices, and vehicle seats equipped with the airbag devices. And the airbag system.

なお、本発明において、上下及び左右は、車両の前方を指向したシートに着座した乗員にとっての上下及び左右を表わす。 In the present invention, the up / down and left / right represent the up / down and left / right for the occupant seated on the seat facing the front of the vehicle.

車両衝突時に乗員を保護する安全装置としてエアバッグ装置が既に実用化されている。かかるエアバッグ装置のうち、車両用のシートに配置されるエアバッグとして、例えば、特許文献１，２に記載されたように、乗員の肩部を拘束する肩部保護エアバッグが知られている。 An airbag device has already been put into practical use as a safety device that protects occupants in the event of a vehicle collision. Among such airbag devices, as an airbag arranged on a vehicle seat, for example, as described in Patent Documents 1 and 2, a shoulder protection airbag that restrains the shoulder of an occupant is known. ..

国際公開ＷＯ２０１６／０３９１６０号公報International Publication WO2016 / 039160 特開２０１５−７１３１７号公報Japanese Unexamined Patent Publication No. 2015-71317

車両が後方から追突を受けた時には、慣性力によって乗員の身体がシートバックに沿って上方に移動しやすい。しかしながら、特許文献１に記載されたエアバッグでは、乗員の上方への移動が十分には拘束されない。 When the vehicle is hit from behind, the occupant's body tends to move upward along the seat back due to inertial force. However, the airbag described in Patent Document 1 does not sufficiently restrain the upward movement of the occupant.

特許文献２のエアバッグ装置は、肩の上側を通る肩エアバッグに加えて乗員の側方に展開する膜部材を有しているが、この膜部材では乗員の左右方向の移動が十分には拘束されない。 The airbag device of Patent Document 2 has a membrane member that expands to the side of the occupant in addition to the shoulder airbag that passes above the shoulder, and the membrane member sufficiently moves the occupant in the left-right direction. Not restrained.

なお、特許文献２では、肩エアバッグは、車両用シートの左側にのみ設置されており、乗員の右肩を拘束する右肩用エアバッグは設けられていない。 In Patent Document 2, the shoulder airbag is installed only on the left side of the vehicle seat, and the right shoulder airbag that restrains the right shoulder of the occupant is not provided.

本発明は、乗員の肩付近を上方、側方及び前方から拘束することができるエアバッグ及びエアバッグ装置と、このエアバッグ装置を備えた車両用シート及びエアバッグシステムとを提供することを目的とする。 An object of the present invention is to provide an airbag and an airbag device capable of restraining the vicinity of an occupant's shoulder from above, from the side and the front, and a vehicle seat and an airbag system equipped with the airbag device. And.

本発明のエアバッグは、シートバックの上部に設置されるエアバッグであって、前記シートバックに着座した乗員の肩の上方に膨張展開するトップ部と、乗員の肩の側方に膨張展開するサイド部と、乗員の肩の前方に膨張展開するフロント部と、を備え、膨張完了した状態において、前記フロント部の上部の最大厚みは、該フロント部の下部の最大厚みの１．２〜２．０倍である。 The airbag of the present invention is an airbag installed on the upper part of the seat back, and expands and deploys to the side of the shoulder of the occupant and the top portion that expands and expands above the shoulder of the occupant seated on the seat back. The maximum thickness of the upper part of the front part is 1.2 to 2 of the maximum thickness of the lower part of the front part when the side part and the front part that expands and expands in front of the shoulder of the occupant are provided and the expansion is completed. It is 0.0 times.

本発明の一態様では、前記フロント部の上部と下部との間に非膨張部を有する。 In one aspect of the present invention, a non-expandable portion is provided between the upper portion and the lower portion of the front portion.

本発明のエアバッグ装置は、かかるエアバッグと、このエアバッグを膨張させるためのインフレータとを有する。 The airbag device of the present invention has such an airbag and an inflator for inflating the airbag.

本発明の車両用シートは、シートバックの上部の左側及び右側の双方にそれぞれかかるエアバッグ装置が設置されたものである。 The vehicle seat of the present invention is provided with such airbag devices on both the left and right sides of the upper part of the seat back.

本発明のエアバッグシステムは、かかるエアバッグ装置と、ステアリングホイールに設けられた運転席用エアバッグ装置と、を備え、膨張展開した運転席用エアバッグに対し、膨張展開した前記エアバッグ装置のエアバッグの前記フロント部の上部が、下部よりも先に接触する。 The airbag system of the present invention includes such an airbag device and a driver's seat airbag device provided on the steering wheel, and the inflated and expanded driver's seat airbag is provided with the expanded and expanded airbag device. The upper part of the front part of the airbag contacts before the lower part.

本発明のエアバッグ及びエアバッグ装置によると、乗員の肩付近が上方、側方及び前方の３方向から拘束される。 According to the airbag and the airbag device of the present invention, the vicinity of the shoulder of the occupant is restrained from three directions of upward, lateral and forward.

エアバッグが膨張した状態における実施の形態に係るエアバッグの上部の斜視図である。It is a perspective view of the upper part of the airbag which concerns on embodiment in the state where the airbag is inflated. 膨張した右エアバッグの前方からの斜視図である。It is a perspective view from the front of the inflated right airbag. 膨張した右エアバッグの後方（図４のIII方向）からの斜視図である。It is a perspective view from the rear (direction III of FIG. 4) of the inflated right airbag. 図２のIV−IV線断面図である。FIG. 2 is a sectional view taken along line IV-IV of FIG. 図４のＶ−Ｖ線断面図である。FIG. 5 is a sectional view taken along line VV of FIG. 図４のVI−VI線断面図である。FIG. 6 is a sectional view taken along line VI-VI of FIG. 各エアバッグが膨張した状態を示す模式図である。It is a schematic diagram which shows the state in which each airbag is inflated.

以下、図１〜図７を参照して実施の形態について説明する。 Hereinafter, embodiments will be described with reference to FIGS. 1 to 7.

図１の通り、車両用シートＳの上部に右エアバッグ１Ｒと左エアバッグ１Ｌが設置されている。右エアバッグ１Ｒと左エアバッグ１Ｌとは左右対称な構造となっているので、以下、右エアバッグ１Ｒについて説明する。 As shown in FIG. 1, a right airbag 1R and a left airbag 1L are installed above the vehicle seat S. Since the right airbag 1R and the left airbag 1L have a symmetrical structure, the right airbag 1R will be described below.

図２，３の通り、右エアバッグ１Ｒは、乗員Ｈの右肩の上側に膨張するトップ部２と、右肩の右側方に膨張するサイド部３と、右肩及び右胸上部の前方に膨張するフロント部４とを有する。 As shown in FIGS. 2 and 3, the right airbag 1R has a top portion 2 that expands to the upper side of the right shoulder of the occupant H, a side portion 3 that expands to the right side of the right shoulder, and anterior to the right shoulder and the upper right chest. It has a front portion 4 that expands.

サイド部３の下辺の後部にインフレータ挿入口５が設けられており、インフレータ挿入口５にインフレータ６が装着されている。 An inflator insertion port 5 is provided at the rear of the lower side of the side portion 3, and the inflator 6 is attached to the inflator insertion port 5.

図４〜６の通り、この実施の形態では、エアバッグ１Ｒは、乗員Ｈに対面する第１パネル１１と、乗員Ｈと反対側の第２パネル１２とを有する。パネル１１，１２が重ね合わされ、周縁が縫合糸１３で縫合されている。トップ部２とサイド部３との境界部では、パネル１１，１２が縫合糸１４で縫合されている。縫合糸１４によって囲まれた部分が第１非膨張部１５となっている。第１非膨張部１５は前後方向に延在する。 As shown in FIGS. 4 to 6, in this embodiment, the airbag 1R has a first panel 11 facing the occupant H and a second panel 12 facing the occupant H. The panels 11 and 12 are overlapped and the peripheral edge is sutured with suture thread 13. At the boundary between the top portion 2 and the side portion 3, the panels 11 and 12 are sutured with suture thread 14. The portion surrounded by the suture thread 14 is the first non-expanding portion 15. The first non-expanding portion 15 extends in the front-rear direction.

トップ部２とフロント部４との境界部では、パネル１１，１２が縫合糸１６で縫合されている。縫合糸１６によって囲まれた部分が第２非膨張部１７である。第２非膨張部１７は左右方向に延在する。 At the boundary between the top portion 2 and the front portion 4, the panels 11 and 12 are sutured with suture thread 16. The portion surrounded by the suture thread 16 is the second non-expanding portion 17. The second non-expanding portion 17 extends in the left-right direction.

トップ部２内とサイド部３内とは、第１非膨張部１５よりも前側部分及び後側部分を介して連通している。トップ部２内とフロント部４内とは、第２非膨張部１７よりも左側部分及び右側部分を介して連通している。 The inside of the top portion 2 and the inside of the side portion 3 communicate with each other via a front side portion and a rear side portion of the first non-expanding portion 15. The inside of the top portion 2 and the inside of the front portion 4 communicate with each other via a left side portion and a right side portion of the second non-expanding portion 17.

サイド部３内とフロント部４内とは、トップ部２を介して連通している。サイド部３の前縁とフロント部４の右縁とは、縫合されている。 The inside of the side portion 3 and the inside of the front portion 4 communicate with each other via the top portion 2. The front edge of the side portion 3 and the right edge of the front portion 4 are sewn together.

フロント部４の中央部分では、パネル１１，１２が縫合糸１８で縫合されている。縫合糸１８によって囲まれた部分が第３非膨張部１９である。第３非膨張部１９は略円形である。第３非膨張部１９は、フロント部４の左右方向の中央、上下方向の中央よりやや下方に設けられる。第２非膨張部１７から第３非膨張部１９までの長さは、第３非膨張部１９からフロント部４の下縁の縫合部（縫合糸１３）までの長さよりも長くなっている。 At the central portion of the front portion 4, the panels 11 and 12 are sutured with suture thread 18. The portion surrounded by the suture thread 18 is the third non-expanding portion 19. The third non-expanding portion 19 is substantially circular. The third non-expandable portion 19 is provided at the center of the front portion 4 in the left-right direction and slightly below the center in the up-down direction. The length from the second non-expanding portion 17 to the third non-expanding portion 19 is longer than the length from the third non-expanding portion 19 to the suture portion (suture thread 13) at the lower edge of the front portion 4.

エアバッグ１Ｒの各部を連結するテザーが設けられていてもよい。 A tether that connects each part of the airbag 1R may be provided.

エアバッグ１Ｒの膨張完了状態において、フロント部４の第３非膨張部１９より上側の上部４ａにおける（前後方向の）最大厚みＴ１は、第３非膨張部１９より下側の下部４ｂにおける最大厚みＴ２の１．２倍以上２．０倍以下となっている。 In the expanded state of the airbag 1R, the maximum thickness T1 (in the front-rear direction) in the upper portion 4a above the third non-inflated portion 19 of the front portion 4 is the maximum thickness in the lower portion 4b below the third non-inflated portion 19. It is 1.2 times or more and 2.0 times or less of T2.

このように構成されたエアバッグ１Ｒに対し、インフレータ６が装着される。エアバッグ１Ｒは折り畳まれて、シートバックＳの右側部分に設けられたリテーナ（図示略）内に収容される。インフレータ６はリテーナに固定される。リテーナは、シートバックＳの表皮によって覆われる。この表皮には、テアラインが設けられている。 The inflator 6 is attached to the airbag 1R configured in this way. The airbag 1R is folded and housed in a retainer (not shown) provided on the right side portion of the seat back S. The inflator 6 is fixed to the retainer. The retainer is covered by the skin of the seat back S. A tear line is provided on this epidermis.

エアバッグ１Ｌも同様にしてシートバックＳの左側部分に設置される。 The airbag 1L is also installed on the left side of the seat back S in the same manner.

車両の衝突、横転等の緊急時には、インフレータ６が作動し、テアラインが開裂し、エアバッグ１Ｒ，１Ｌが図示のように膨張する。エアバッグ１Ｒ，１Ｌのトップ部２が乗員Ｈの肩部分の上方に展開し、サイド部４が肩から上腕の側方に展開し、フロント部４が肩から右胸又は左胸の上部の前方に膨張する。これにより、乗員の肩付近が上方、側方及び前方の３方向から拘束される。 In an emergency such as a vehicle collision or rollover, the inflator 6 operates, the tear line is cleaved, and the airbags 1R and 1L expand as shown in the figure. The top portion 2 of the airbags 1R and 1L expands above the shoulder portion of the occupant H, the side portion 4 expands from the shoulder to the side of the upper arm, and the front portion 4 expands from the shoulder to the front of the upper part of the right chest or the left chest. Inflate to. As a result, the vicinity of the occupant's shoulder is restrained from three directions: upward, lateral and forward.

この実施の形態では、トップ部２とサイド部３及びフロント部４との境界部にそれぞれ非膨張部１５，１７を設けているので、エアバッグ１Ｒ，１Ｌが各境界部で容易に屈曲する。 In this embodiment, since the non-expandable portions 15 and 17 are provided at the boundary portions between the top portion 2, the side portion 3 and the front portion 4, respectively, the airbags 1R and 1L are easily bent at each boundary portion.

また、エアバッグ１Ｒ、１Ｌが膨張する際、図７に示すように、ステアリングホイール５４に設けられた運転席用エアバッグ装置５０の運転席用エアバッグ５２も膨張する。フロント部４は、上部４ａが下部４ｂよりも厚く、上部４ａが下部４ｂよりも早く運転席用エアバッグ５２に接触する。そのため、乗員の肩付近を早期に拘束する。なお、図７では、説明の便宜上、フロント部４を、図６に示す垂直断面部分での形状で示している。 Further, when the airbags 1R and 1L expand, as shown in FIG. 7, the driver airbag 52 of the driver airbag device 50 provided on the steering wheel 54 also expands. In the front portion 4, the upper portion 4a is thicker than the lower portion 4b, and the upper portion 4a contacts the driver's seat airbag 52 earlier than the lower portion 4b. Therefore, the area around the shoulders of the occupant is restrained at an early stage. In FIG. 7, for convenience of explanation, the front portion 4 is shown in the shape of the vertical cross-sectional portion shown in FIG.

上記実施の形態は本発明の一例であり、本発明は上記以外の態様とされてもよい。 The above embodiment is an example of the present invention, and the present invention may be an embodiment other than the above.

１Ｒ，１Ｌ エアバッグ
２ トップ部
３ サイド部
４ フロント部
５ インフレータ挿入口
６ インフレータ
１１ 第１パネル
１２ 第２パネル
５０ 運転席用エアバッグ装置 1R, 1L airbag 2 Top part 3 Side part 4 Front part 5 Inflator insertion port 6 Inflator 11 1st panel 12 2nd panel 50 Driver's seat airbag device

Claims (5)

シートバックの上部に設置されるエアバッグであって、
前記シートバックに着座した乗員の肩の上方に膨張展開するトップ部と、
乗員の肩の側方に膨張展開するサイド部と、
乗員の肩の前方に膨張展開するフロント部と、
を備え、
膨張完了した状態において、前記フロント部の上部の最大厚みは、該フロント部の下部の最大厚みの１．２〜２．０倍であることを特徴とするエアバッグ。 An airbag installed on the top of the seat back
The top part that expands and expands above the shoulders of the occupant seated on the seat back,
The side part that expands to the side of the occupant's shoulder and
The front part that expands and expands in front of the occupant's shoulders,
With
An airbag characterized in that the maximum thickness of the upper portion of the front portion is 1.2 to 2.0 times the maximum thickness of the lower portion of the front portion when the expansion is completed. 前記フロント部の上部と下部との間に非膨張部を有することを特徴とする請求項１に記載のエアバッグ。 The airbag according to claim 1, wherein a non-expandable portion is provided between an upper portion and a lower portion of the front portion. 請求項１又は２に記載のエアバッグと、このエアバッグを膨張させるためのインフレータとを有するエアバッグ装置。 An airbag device comprising the airbag according to claim 1 or 2 and an inflator for inflating the airbag. シートバックの上部の左側及び右側にそれぞれ請求項３に記載のエアバッグ装置が設置されている車両用シート。 A vehicle seat in which the airbag device according to claim 3 is installed on the left side and the right side of the upper part of the seat back, respectively. 請求項３に記載のエアバッグ装置と、
ステアリングホイールに設けられた運転席用エアバッグ装置と、
を備え、
膨張展開した運転席用エアバッグに対し、膨張展開した前記エアバッグ装置のエアバッグの前記フロント部の上部が、下部よりも先に接触することを特徴とするエアバッグシステム。 The airbag device according to claim 3 and
The driver's airbag device installed on the steering wheel and
With
An airbag system characterized in that the upper portion of the front portion of the airbag of the expanded and expanded airbag device comes into contact with the expanded and expanded driver's seat airbag before the lower portion.
JP2019123086A 2019-07-01 2019-07-01 Air bag, air bag device, vehicle seat and air bag system Pending JP2021008207A (en)

Priority Applications (2)

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JP2019123086A JP2021008207A (en) 2019-07-01 2019-07-01 Air bag, air bag device, vehicle seat and air bag system
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JP2008184159A (en) * 2003-01-20 2008-08-14 Toyota Motor Corp Occupant crash protection device
JP2012051557A (en) * 2010-08-27 2012-03-15 Tk Holdings Inc Airbag apparatus
JP2017140924A (en) * 2016-02-10 2017-08-17 トヨタ自動車株式会社 Occupant protection device
JP2018083554A (en) * 2016-11-24 2018-05-31 豊田合成株式会社 Occupant protection device
JP2019014477A (en) * 2018-10-31 2019-01-31 豊田合成株式会社 Occupant protection device
JP2019018791A (en) * 2017-07-20 2019-02-07 Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社 Airbag, and occupant restraint device
KR20190021905A (en) * 2017-08-24 2019-03-06 현대자동차주식회사 Side airbag of vehicle

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EP1193141A2 (en) * 2000-09-28 2002-04-03 Peugeot Citroen Automobiles SA Vehicle seat comprising a headrest and an inflatable cushion inside the headrest
JP2008184159A (en) * 2003-01-20 2008-08-14 Toyota Motor Corp Occupant crash protection device
WO2007099668A1 (en) * 2006-03-01 2007-09-07 Takata Corporation Airbag and airbag device
JP2012051557A (en) * 2010-08-27 2012-03-15 Tk Holdings Inc Airbag apparatus
JP2017140924A (en) * 2016-02-10 2017-08-17 トヨタ自動車株式会社 Occupant protection device
JP2018083554A (en) * 2016-11-24 2018-05-31 豊田合成株式会社 Occupant protection device
JP2019018791A (en) * 2017-07-20 2019-02-07 Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社 Airbag, and occupant restraint device
KR20190021905A (en) * 2017-08-24 2019-03-06 현대자동차주식회사 Side airbag of vehicle
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