CN113260538B - Opw气囊 - Google Patents

Opw气囊 Download PDF

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CN113260538B
CN113260538B CN202080007395.1A CN202080007395A CN113260538B CN 113260538 B CN113260538 B CN 113260538B CN 202080007395 A CN202080007395 A CN 202080007395A CN 113260538 B CN113260538 B CN 113260538B
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fabric layer
opw
airbag
warp
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CN113260538A (zh
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D·阿尔贝茨
迈克尔·贝克
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Global Safety Textiles GmbH
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B32LAYERED PRODUCTS
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    • B60VEHICLES IN GENERAL
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Abstract

本发明涉及一种OPW气囊,其具有经纱和纬纱,所述经纱和纬纱被机织成至少三个机织织物层、即一个下织物层(UG)、一个上织物层(OG)和设于两者之间的一个中间织物层(MG)。中间织物层(MG)的经纱和纬纱在OPW气囊的第一局部区域(ETB)中自中间织物层(MG)露出并且完全浮动在下织物层(UG)和上织物层(OG)之间,并且在该OPW气囊的第二局部区域(ZTB)中被接合到该下织物层(UG)或该上织物层(OG)中。

Description

OPW气囊
技术领域
本发明涉及OPW气囊,其具有至少三个机织的织物层,即一个下织物层、一个上织物层和设于两者之间的中间织物层。
背景技术
所谓的远侧安全气囊(也称为前中央安全气囊)例如在指向副驾的一侧布置在机动车司机座椅中。所述气囊在未来应被用来满足有望在2020年生效的新的Euro NCAP测试要求。测试说明例如在互联网上的“euro-ncap-far-side-test-assessment-protocol-v10.pdf”下可找到。也请参见www.euroncap.com下的“欧洲新车评估计划”。
上述气囊迄今只能通过所谓的“切割、密封和缝制方法”来很费事地制造。在此,从一个或多个织物幅材上裁剪下许多织物片段,用密封剂来涂覆并且昂贵且费时地将它们缝合成气囊。为了能够确保尽可能最佳的车辆乘客保护作用,这种气囊必须在充气状态下具有鲜明的形状和很高的刚度。用于此应用目的的已知气囊是复杂的解决方案,并且目前以高的精制技术成本来制造,做法是例如从涂有硅氧烷的平面织物上裁剪出两个以上的相同的或部分相同的或不同的成形部分,在边缘处喷涂上呈环绕履带形式的密封剂,接着将多个织物部分叠放,以及接着使这些部分粘合。另外,这些织物层具有接缝,以确保粘合剂接缝的足够强度。必须在另一个加工步骤中缝上其它部件例如系带、接片等(用密封剂或不用密封剂)。该方法非常耗时且成本密集并且需要大量人工加工步骤。但是,在车辆座椅中可供整个模块所用的空间很有限。缝制的远侧安全气囊决定了需要更大的结构空间,这是因为接缝和多个织物层隆起很大。
从EP3127758A1中已知一种远侧安全气囊装置,其具有多层缝合的双层气囊,在其内部,为了控制在充气中要争取的另外双层的气囊的空间结构而缝制了平行于外层的各种尺寸和位置都特定的织物件。另外,布置有针对性的接缝以连接两个外织物层。从那里的描述中得知了辛苦且费时的远侧安全气囊制造。
发明内容
本发明的任务是提出一种气囊,借此避免或至少显著减少从现有技术中已知的缺点。
该任务通过一种OPW气囊来完成,即一种OPW气囊,其具有至少三个机织的织物层,即一个下织物层、一个上织物层和设于两者之间的一个中间织物层,其特征在于,中间织物层的经纱和纬纱如此布置,即,中间织物层的经纱和纬纱在OPW气囊的第一局部区域中从中间织物层露出并完全浮动在下织物层和上织物层之间,并且在OPW气囊的第二局部区域中被接合到下织物层或上织物层中。即,中间织物层的经纱和纬纱最好在第一局部区域中未交织在一起,因此不形成闭合的织物面。本发明的OPW气囊有利地是在唯一工序中一件式机织(一片式)而成的气囊,其固定即可地由编织机机织而成并且有利地已经配备和配置成具有其所有功能特征。为了满足所规定的不同密封性要求,它分别单独地还只需具有提供密封剂。因此,不同于从现有技术中已知的安全气囊,得到了可观的成本和制造时间节约。根据本发明的、中间织物层的经纱和纬纱完全浮动在OPW气囊的第一局部区域中的构造还允许布置在下织物层和中间织物层之间的腔与布置在上织物层和中间织物层之间的腔的连通。由于根据本发明的编织结构,即,上织物层的一部分经纱和下织物层的一部分经纱被布置成它们分别在选定区域离开所述织物层并在第二局部区域进入中间织物层,故在编织中出现这两个腔。这两个腔可以在一个充气过程中同时被发生器或充气机填充并且已经形成一个稳定的远侧安全气囊。目的是利用这种基本结构来满足Euro-NCAP的要求。
在本发明的一个有利设计中,OPW气囊的特征在于,所述上织物层和中间织物层通过X系结在选定区域中相互连接。根据本发明的这种构造允许目标准确地掌控个别期望的上腔形状。在两个织物层在此通过X系结彼此连接的所选区域中,根据本发明特意限制充气时的气囊局部充胀及其规模。
在本发明的另一个有利设计中,OPW气囊的特征在于,该下织物层和该中间织物层在选定区域中通过X系结相互连接。根据本发明的这种构造允许目标精确地控制下腔或这两个腔的各自期望形状。在此也适用的是,在所选区域(两个织物层在此通过X系结彼此连接)中,根据本发明,可以有利地特意限制在充气时的气囊局部膨胀及其规模。
在本发明的又一个有利设计中,OPW气囊的特征在于,它具有前部、中部和后部,其中在该前部中设有用于容纳发生器的发生器口并且与之相接地在第一局部区域中设有流入区域,其中在该中部中在中间织物层和下织物层之间设有在后部方向上纵向延伸的加强腔,并且在后部中布置有沿其横向延伸的加强腔。借助根据本发明所设置的纵向延伸或横向延伸的加强腔,可以有目的地形成本发明的OPW气囊的“较硬”和不太“硬”的部分,进而可设定纵向刚度和/或横向刚度,在这里,OPW气囊中的加强腔能与方向无关地布置。
在本发明的另外一个有利设计中,OPW气囊的特征在于,在所述中间织物层和上织物层之间,邻近且平行于在中间织物层和下织物层之间横向延伸的加强腔地布置有X系结列,X系结列的宽度小于横向延伸的加强腔的宽度。根据本发明,这种构造现在允许气囊一部分相对于另一部分的可控弯曲。在此,所述后部可相对于前部和中部有利地从织物平面突升“到第三维度”,做法是X系结列和加强腔的不同宽度在气囊充气时造成所述后部朝X系结列所在的侧面弯曲。这是如此造成的,其宽度小于横向延伸的加强腔的宽度的X系结列使外侧上织物层比在相对侧的加强腔更强烈地收缩。
在本发明的又一有利设计中,OPW气囊的特征在于,它在中部和后部之间的区域中具有至少一个横向延伸的单层区域。在OPW气囊中的线性单层区域始终适合于使气囊沿所述区域稍微弯曲。在本发明的这种有利改进方案中,这导致可实现弯曲。
在本发明的又一有利设计中,OPW气囊的特征在于,它在中部和后部之间的区域中具有多个侧向凹部。这样的凹部也适于使气囊在该区域中弯曲变得容易。在紧急情况下,即在碰撞情况下,根据本发明的气囊突然充胀。在这种情况下将看到它在胸部区域贴靠车辆乘客。根据本发明,其所谓的后部可沿曲折线弯曲并也因为上述弯曲向“第三维度”而贴靠车辆乘客头部。
最后,在本发明的又一有利设计方案中,该OPW气囊的特征在于,它在其外表面上具有聚合物层。利用这种密封物质的涂层有利地提高了织物层的不透气性,因此提高了在处于充气压力的气囊情况下的形状稳定性。
特别是,本发明的主题可被用在远侧气囊领域,因为在EuroNCAP2020指南中需要这种气囊。
附图说明
为了更好地理解本发明,以下将结合实施例并借助附图来简要说明本发明。这些图大多示出俯视示意图或截面示意图。
图1极其示意性地从上方示出处于未充气状态的OPW气囊。
图2极其示意性地示出处于未充气状态的图1的截面图,其中在OPW气囊的第一局部区域中示出了中间织物层的完全浮动经纱和纬纱。
图3极其示意性地从下方示出处于未充气状态的图1的OPW气囊。
图4a极其示意性地以截面图举例示出处于未充气状态的具有单独腔的OPW气囊局部。为了示出织物层相互间的实际位置,它们被略微分开地示出。
图4b极其示意性地以截面图示出根据图4a的OPW气囊局部,但其处于充气状态并且相应变短。
图4c以高度示意性的截面图示出OPW气囊的后部,该气囊具有处于非充气状态的X系结和加强室。为了示出织物层相互间的实际位置,它们被略微分开地被示出。
图4d类似于图4c极其示意性地以截面图示出根据图4c的具有X系结和加强腔的OPW气囊的后部,但其处于充气状态并且后部弯曲。
图5从侧面极其示意性地示出处于充气状态且贴靠车辆乘客的OPW气囊。
具体实施方式
图1极其示意性地从上方示出处于未充气状态的OPW气囊LS的实施例。OPW气囊LS由经纱和纬纱一件式机织而成。经纱在按照箭头K的经向上延伸。纬纱在按照箭头S的纬向上延伸。但该延伸方向不是约束性的。它们形成三个织物层、即一个下织物层UG、一个上织物层OG和布置在它们之间的一个中间织物层MG。
OPW气囊LS被分为前部VA、中部MA和后部HA。上织物层OG面向观察者。下织物层UG背离观察者。在该图中看不到中间织物层MG(此处以粗方格表示),因为它位于OPW气囊LS内。它从后部HA经中部MA延伸到前部VA中。在前部VA中有一个(仅为了说明而呈细菱形)第一局部区域ETB,在第一局部区域中,中间织物层MG的经纱和纬纱从中露出并完全浮动在下织物层UG和上织物层OG之间。与OPW气囊LS的前部VA的呈细菱形状的第一局部区域ETB相接地有第二局部区域ZTB(仅为了说明而呈粗菱形化)。在从第一局部区域ETB到双层配置的第二局部区域ZTB的过渡区中,先前在第一局部区域ETB中浮动的中间织物层MG的经纱和纬纱进入上织物层OG或下织物层UG。第二局部区域ZTB呈双层形式配置,即,它仅由上织物层OG和下织物层UG组成。发生器口GEM也位于此处,在其区域中接设有发生器G(未显示)。
一个单层区域EB作为“编织接缝”包围OPW气囊LS。这种所谓的编织接缝是如此得到的,即,在该区域中,所有经纱和纬纱都聚集在一个织物层中。在前部VA中画出剖切线II-II。对此在图2的说明中进行介绍。在后部HA中画出剖切线IV-IV。对此将在图4c和图4d的说明中进行介绍。但应当指出由横向延伸的细长矩形表示X系结列,其布置在上织物层OG和中间织物层MG之间并且在当前的图1中是原本看不到的。
图2从上方示出处于充气状态的图1的II-II截面示意图,其中,中间织物层MG的完全浮动的经纱FF和纬纱FF处于OPW气囊LS的第一局部区域ETB中。注意,这三个织物层在非充气状态下彼此紧贴,其中,浮动的经纱和纬纱FF松弛地位于两个外层OG和UG之间。
在图2中,人们从上方看到(在图中)三层织物,它由下织物层UG、上织物层OG和设于两者间的中间织物层MG组成。上腔OK位于上织物层OG和中间织物层MG之间。下腔UK位于中间织物层MG和下织物层UG之间。设于其间的中间织物层MG在第一局部区域ETB处结束并且在那里有一定程度的散解,因为中间织物层MG的经纱和纬纱在第一局部区域ETB中未交织在一起,实际上,它们从中间织物层MG中出来,在下织物层UG和上织物层OG之间完全浮出,并且在至第二局部区ZTB的过渡处进入下织物层UG或上织物层OG并且随后在那里被接合。根据本发明的构造的特点在于,中间织物层MG不再存在于第一局部区域ETB和第二局部区域ZTB中。
在上腔OK中例如示出几个系结列XTK,其由所谓的X系结X组成,X系结又通过将经纱和/或纬纱相互交换至相邻编织层中来产生。系结列由多个按一列并排布置的X系结组成。X系结的意义和目的是在充气时限制或控制各自织物层的充胀。这是本领域技术人员所已知的。
从发生器口GEM开始,在本发明的OPW气囊LS的使用情况下,被用于气囊充气的介质(以下仅还称之为“充气空气”或“空气”)从双层第二局部区域ZTB经过第一局部区域ETB(经纱和纬纱在此浮现,也称为流入区域ESB)流向在第一局部区域ETB之后开始的中间织物层MG。
为了在不损坏的情况下获得气囊LS或两个叠置的空气腔OK和UK的动态充填,需要该流入区域ESB,流入区域应该允许空气以阻力尽可能小的方式流入。流入区域ESB在结构方面被构造成使该中间织物层MG的纱线在在经向和纬向上完全浮动。因而在此没有纱线交织。它们在流入区域中可以说是“松弛地”位于气囊LS内部。
然后,该中间织物层MG的经纱和纬纱双层的第二局部区域ZTB(发生器也连接于所述第二局部区域中)中也可选地关于相同部分或不同部分被疏缝在上部织物层OG和下部织物层UG的内侧。可以说,流入区域ESB形成在双层发生器口GEM与气囊LS的腔UK和OK之间的连通件。
图3从底侧示出根据本发明的OPW气囊LS。因此,下织物层OG面向观察者。上织物层UG背对观察者。能够看到第一局部区域ETB的位置。该图示首先用于描述加强腔QVK和LVK。在中部MA内,在后部HA的方向上设有纵向延伸的加强腔LVK。它们位于接缝LN之间,接缝作为编织接缝布置在中间织物层MG和下织物层UG之间。在后部HA中,布置有沿其横向延伸的加强腔QVK。它们位于接缝QN之间,接缝也作为编织接缝布置在中间织物层MG和下织物层UG之间。两种腔都用于在充气时在纵向或横向上加强OPW气囊LS。
编织的曲折缝KN布置在后部HA和中部MA之间,曲折缝将中间织物层MG和上织物层OG彼此连接。在设于OPW气囊LS的外边缘处的侧向凹部SEA的帮助下,允许后部HA相对于中部MA弯曲或曲折。曲折缝KN的作用类似于铰链。
图4a示出了处于未充气状态的具有单独腔EK和编织接缝WN的简单的双层OPW气囊以说明在OPW气囊充气时的几何形状。它具有长度A。如果它被充气,见图4b,则它缩短到长度B。由于腔EK被充满空气,故它们会鼓胀。所述气囊“进入第三维”并变短。
在图4c中,以图1的IV-IV截面图举例且非常示意性地(为了更容易理解而偏离实际尺寸)示出在后部HA中呈三层状构成的本发明气囊LS的局部,其未处于充气状态,但出于图示考虑以基线GL取向地略微向上和向下分开。在上织物层OG和中间织物层MG之间布置有由X系结形成且具有宽度XTB的X系结列XTK。在中间织物层MG和下织物层UG之间布置有具有宽度VKB的横向加强腔QVK。X系结列XTK的宽度XTB比横向加强腔QVK的宽度XTB短了可按宽度规定所选的Δ。
现在,图4d示出当在此所示的OPW气囊LS充气时出现的结果,即,气囊因为所述Δ而在箭头PK方向上弯曲。横向加强腔QVK的缩短程度不如X系结列XTK。结果如图所示,在图4d的右侧出现向上弯曲。根据本发明的OPW气囊LS略微变短。其右端在由X系结的排列和数量的有目的的控制下自基线GL向上移动。
在图4c和图4d中还可以清楚看到X系结X如何从上织物层OG露出并进入中间织物层MG且反之亦然。还示意性示出X系结列XTK和X系结的X形交叉。当然,X系结的数量是可变的。在这里仅示出几个例子。
图5示出在使用情况即充气状态下的本发明的OPW气囊。例如,OPW气囊LS以其前侧区域VB布置在乘客I的胸腹交界处并如图所示为充气状态。
它以其前部VA和中部MA在手臂和胸部保护性地贴靠乘客I。也能清楚看到,OPW气囊LS的后部在曲折缝KN区域内弯曲并向乘客头部倾斜,在此,它保护性地将头部自假想车辆的所示中线ML推开。
附图标记
EB 单层区域
EK 单独腔
ESB 流入区域
ETB 第一局部区域
FF 浮动的经纱和纬纱
G 发生器
GEM 发生器口
GL 基线
HA 后部
I 乘客
K 经向
KN 曲折缝
KOG 上织物层的经纱
KMG 中间织物层的经纱
KUG 下织物层的经纱
L 箭头,空气流
LN 纵缝
LS OPW气囊
LVK 加强腔
MA 中部
MG 中间织物层
ML 中线
OG 上织物层
PK 弯曲箭头
QN 横缝
QVK 加强腔
S 纬向
SEA 侧向凹部
SMG 纬纱
UG 下织物层
VA 前部
WN 编织接缝
X X系结
XTK 系结列
ZL 双层区域
ZTB 第二局部区域

Claims (8)

1.一种OPW气囊,所述OPW气囊具有经纱和纬纱,所述经纱和纬纱被机织成至少三个机织的织物层,即下织物层(UG)、上织物层(OG)和设于所述下织物层(UG)和所述上织物层(OG)之间的中间织物层(MG),其特征在于,所述中间织物层(MG)的所述经纱和所述纬纱在所述OPW气囊的第一局部区域(ETB)中从所述中间织物层(MG)露出并且完全浮动在所述下织物层(UG)和所述上织物层(OG)之间,并且所述中间织物层(MG)的所述经纱和所述纬纱在所述OPW气囊的第二局部区域(ZTB)中被接合到所述下织物层(UG)或所述上织物层(OG)中。
2.根据权利要求1所述的OPW气囊,其特征在于,所述上织物层(OG)和所述中间织物层(MG)在选定区域中通过X系结(X)彼此连接。
3.根据权利要求1或2所述的OPW气囊,其特征在于,所述下织物层(UG)和所述中间织物层(MG)在选定区域中通过X系结(X)彼此连接。
4.根据权利要求1所述的OPW气囊,其特征在于,所述OPW气囊具有前部(VA)、中部(MA)和后部(HA),其中,在所述前部(VA)中设有用于容纳发生器(G)的发生器口(GEM)并且与所述发生器口邻接地在所述第一局部区域(ETB)中设有流入区域(ESB),其中,在所述中间织物层(MG)和所述下织物层(UG)之间,
-在所述中部(MA)中在所述后部(HA)的方向上设有纵向延伸的加强腔(LVK),并且
-在所述后部(HA)中设有沿其横向延伸的加强腔(QVK)。
5.根据权利要求4所述的OPW气囊,其特征在于,在所述中间织物层(MG)和所述上织物层(OG)之间,与在所述中间织物层(MG)和所述下织物层(UG)之间横向延伸的加强腔(QVK)相邻且平行地设有多个X系结列(XTK),所述X系结列的宽度小于横向延伸的所述加强腔(QVK)的宽度。
6.根据权利要求4所述的OPW气囊,其特征在于,所述OPW气囊在所述中部(MA)和所述后部(HA)之间的区域中具有横向延伸的基本呈线性的至少一个单层区域(EB)。
7.根据权利要求4所述的OPW气囊,其特征在于,所述OPW气囊在所述中部(MA)和所述后部(HA)之间的区域中具有多个侧向凹部(SEA)。
8.根据权利要求1所述的OPW气囊,其特征在于,所述OPW气囊在其外表面上具有聚合物层。
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