CN106043204A - 具有通风的反作用板的主动杂物箱门 - Google Patents
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Abstract
一种主动杂物箱门包括气囊元件,该气囊元件沿着外周边通过热焊缝与前壁接合以形成充气腔。该气囊元件包括用于在碰撞事件期间响应于充气气体而展开的周向褶皱部。门内衬接合到气囊元件的中心区域并且形成气囊元件后面的总体上连续的褶皱部。该门内衬与仪表板连接以提供用于气囊的膨胀的反作用表面。该褶皱部具有设置为靠近门内衬的峰,其中峰包括划定门内衬上的碰撞区域的排气开口。该门内衬包括在碰撞区域中允许充气气体从排气开口流动通过门内衬的多个穿孔。
Description
技术领域
本发明总体上涉及用于机动车辆中乘员碰撞保护的主动垫,并且更具体地涉及一种主动杂物箱门。
背景技术
本发明总体上涉及用于机动车辆中乘员碰撞保护的主动垫,并且更具体地,涉及一种具有充气腔的主动垫,该充气腔由热焊接以形成密封的密封件的塑料壁板形成,其中一个壁是开口的,用于充气气体的可控释放。
主动垫是一种车辆乘员保护装置,该装置具有充气腔以在碰撞过程中吸收碰撞并且减少对乘员的伤害。相对于一充气就从各个开口后面显露出来的由各种织物制成的可展开的安全气囊垫,主动垫使用内饰表面(例如,仪表板、杂物箱、乘客门、或座椅靠背)本身来在碰撞事件开始时膨胀,用于吸收碰撞并且通过充气气体的作用来消散能量。通过引用并入本文的公告日期为2012年6月26日的美国专利8,205,909公开了一种集成到重量轻且视觉上有吸引力的杂物箱门中的主动膝垫。也通过引用并入本文的公告日期为2013年7月2日的美国专利8,474,868公开了一种典型的结构,其中主动垫包括前壁或装饰板,该前壁或装饰板面向车辆乘员并且沿着密封的周边附接到后壁或气囊元件。一个或两个壁是可变形的以便提供可膨胀的充气腔。例如,气囊元件可以具有在充气过程中拉直的褶状(即,手风琴状)区域。
用于主动垫的典型的气囊的前壁和后壁由成型热塑性塑料例如聚乙烯、聚烯烃、或聚氯乙烯(PVC)制成。它们通常是注射成型的但也可以吹塑成型。当单独形成时,前壁和后壁必须围绕它们的周边密封地接合以便形成充气腔。接合处必须是强有力的以抵抗由在充气过程中高充气压力造成的分离和当乘客碰撞垫时导致的分离。外围密封部通过例如热焊接形成。
已知的是,为了优化当乘员接触安全气囊或主动垫时能量的消散,充气气体应该被排放以允许使撞击的乘员安全减速的安全气囊的可控塌陷。通过引用并入本文的公告日期为2014年5月13日的美国专利8,720,943公开了一种用于提供可变排气流速的主动排气结构。
褶状气囊元件上的各种类型的结构和位置已被公开用于在充气期间以及在撞击的乘客加载期间排放充气气体。排气位置已被公开在气囊壁的中心平坦区域上、在气囊壁的褶状挡板区域中、以及在例如将气囊壁附接到反作用表面的焊接塔中。已经提出,排气孔可以被设置成1)靠近充气力的应力可能形成最大可能性的焊接故障的某些区域,或2)具有调节在垫的不同区域中提供的约束力的空间分布。因为将排气孔(一个或多个)定位成靠近热焊缝是合意的,所以常常选择最外侧的褶皱部用于排气位置。在气囊元件注射成型的情况下,最外侧的褶皱部上的用于排气的窗户开口已被定位在褶皱部的顶部(即,峰),因为这有利于注射成型过程并且简化成型工具。
由于典型的机动车辆乘客舱的空间考虑,未充气的垫总成相对薄是有利的。为了将主动垫安装到杂物箱门的可用深度,例如,要求气囊壁的褶状挡板将被设置成非常靠近门内衬充当支撑气囊膨胀的反作用板。因此,褶皱部的峰上的排气开口靠近门内衬,排气开口划定充气气体离开门内衬的排气开口撞击的碰撞区域。由于气流的局部阻碍,排气开口在充气的初始阶段期间没有提供预期的压力释放或焊接应力的所需降低。
发明内容
在本发明的一个方面,提供了一种用于安装在机动车辆中的仪表板的开口中的主动杂物箱门。塑料成型的前壁从该开口向外展开。塑料成型的气囊元件沿着外周边通过热焊缝与该前壁接合以形成充气腔。该气囊元件包括邻近焊缝用于在碰撞事件期间响应于充气气体注入到充气腔中而展开的至少一个大体上周向褶皱部。门内衬接合到气囊元件的中心区域。该门内衬形成气囊元件后面的总体上连续的褶皱部。该门内衬与仪表板连接以提供用于气囊元件的膨胀的反作用表面。该褶皱部具有设置为靠近门内衬的峰,其中该峰包括划定门内衬上的碰撞区域的排气开口。该门内衬包括在碰撞区域中允许充气气体从排气开口流动通过门内衬的多个穿孔。
附图说明
图1是一种类型的主动膝垫杂物箱门系统的向外看的分解的透视图,本发明可以应用于这种类型的主动膝垫杂物箱门系统;
图2是主动垫的局部充气腔总成的后部透视图;
图3是示出了现有技术主动垫总成的侧面剖视图;
图4是边缘部分分离的主动杂物箱总成的后部透视图;
图5是包括排气开口的图4的一部分的放大图;
图6是示出了具有反作用表面的现有技术排气开口的界面的剖视图;
图7是示出了本发明的改进的反作用板的剖视图;
图8是根据一个实施例的门内衬的内侧面的平面图;
图9是根据一实施例具有格栅图案的穿孔的门内衬的外侧面的平面图;
图10是根据一实施例具有标志图案的穿孔的门内衬的外侧面的平面图;
图11是根据一实施例具有弹出式插头的门内衬的外侧面的平面图;
图12是沿着图11的线12-12通过弹出式插头的剖视图;
图13是根据一实施例具有限定排气口的撕裂接缝的门内衬的外侧面的平面图;
图14是沿着图13的线14-14通过形成排气口的撕裂接缝的剖视图。
具体实施方式
现在参照图1,现有技术的主动膝垫系统10具有基板部件11,基板部件11形成垫的基础。基部11可以如图1所示通过与存储腔或杂物箱12铰接来附接到车辆,或安装到另一个结构,例如位于转向柱下方的仪表板支撑件。这样的位置容易接近乘坐在车辆内的相应的就座位置中的各个乘客的膝盖。
在这种布置中,基部11是充当用于支撑充气腔的反作用板的门内壁或内衬,该充气腔通过后(气囊)壁13和前(装饰)壁14形成,后(气囊)壁13和前(装饰)壁14围绕它们的周边15接合。壁13和14优选由模制塑料(例如热塑性聚烯烃(TPO))制成,并且通过塑料热焊接——例如热板或振动焊接——接合以形成围绕中心区域17的外围密封部,从而形成充气腔。充气气体源16被电子地控制,用于在碰撞过程中激活以释放气体来给垫充气。前壁14可以包含A级内饰表面,例如杂物箱门的外部,或者附加外皮或罩(未示出)可以应用于其外表面。
图2是用于主动垫的充气腔总成20的后视图。塑料成型的前壁或装饰板21覆在塑料成型的、可膨胀的后壁或气囊元件22上面。壁21和气囊元件22围绕封闭的周边区域通过热焊接凸缘23接合到装饰壁21的内表面,以便形成在壁21和气囊元件22之间具有开放中心体积的充气腔,该充气腔在碰撞事件期间接收来自充气机24的充气气体,充气机24安装在气囊元件22的凹部25中。气囊元件22包括多个褶皱部,例如26和27,以适应气囊元件22在充气期间的膨胀。褶皱部27是邻近焊接凸缘23的最外侧的褶皱部。多个附接塔(即,凸台)28从设置在挡板褶皱部26和27内的气囊元件22的中心区域突出。塔28用于将气囊元件22安装到反作用板(未示出),例如主动杂物箱门垫的门内衬。一对排气孔30和31在最外侧褶皱部27的峰处穿透通过气囊元件22。
图3示出了气囊20当组装到反作用板或壁34上的剖视图。附接塔28可以热焊接到例如反作用壁34。挡板褶皱部27被窗户开口33穿透以提供排气孔。在由于充气气体被供应至气囊腔36中导致展开期间,前装饰壁21朝向车辆的乘客舱中的乘客在展开方向35上展开。
图4示出了主动杂物箱总成45,主动杂物箱总成45包括门内衬或板46,门内衬或板46提供用于可充气垫的反作用表面并且其支撑储存箱47和闩锁48。前装饰壁50沿着焊接凸缘52附接到气囊元件51。最外侧的褶皱部53被设置成邻近凸缘52。气囊元件51的中心区域(未示出)被附接到门内衬/反作用板46。门内衬46被形成为气囊元件51后面的总体上连续的板并且被配置为围绕主动杂物箱门总成45的开口与仪表板和/或固定装置或框架(未示出)连接。
如图5所示,最外侧的褶皱部53包括紧密接近门内衬46的峰54。在峰54中,褶皱部53包括排气开口55。在褶皱部53在充气的初始阶段期间展开之前,离开排气开口55的充气气体在碰撞区域56中受门内衬46限制。这在图6中更详细地示出,其中充气气体通过排气开口55排出的流动路径57被反作用壁46的紧密接近部分阻碍。碰撞区域56由排气开口55的位置划定,即,通过开口55在门内衬46上在气体流动路径57的方向上的投影。因此,由于通过排气开口55的有效流速的降低,过大的充气气体压力可以沿着将凸缘52接合到装饰壁50的焊缝积聚。增大排气开口55的尺寸以提高初始流速并且降低来自压力积聚的初始应力可能是不可取的,因为这将导致褶皱部53开始展开并且反作用壁46停止提供障碍之后流速太高。
图7示出了本发明的第一实施例的剖视图,其中主动杂物箱门总成60具有前装饰板61、气囊元件62和门内衬/反作用板63。每个部件优选由注射成型的塑料部件制成。气囊元件62具有最外侧的褶皱部的峰64,在该峰64处,排气开口65被形成为邻近门内衬63上的碰撞区域66。碰撞区域66中的多个穿孔67允许充气气体从排气开口65流动通过门内衬63。通过使门内衬63通风,对离开排气孔65的充气气体的阻碍被减小。由于褶皱部内的区域被保持在较低的压力下,因此在接合气囊元件62与装饰板61的热焊缝处形成较小的应力。通过将穿孔67限制到仅在碰撞区域66中的位置处,门内衬63仍然可以提供用于门内衬63的大部分的密封的连续表面(这对于杂物箱门的内壁的审美和功能原因是非常合意的)。
图8是门内衬63的内部视图,其中为了增加强度和刚性,多个加强肋68在内衬63的大部分内侧面上交叉。穿孔67可以在碰撞区域66中以避开肋68的图案形成。可选择地,肋68可以在碰撞区域66中中断,或穿孔67可以可选择地穿透肋。
图9示出了门内衬70的外表面,该门内衬70的外表面示出了设置在气囊元件(未示出)中的多个排气开口中的每个的各自的碰撞区域中的多个穿孔71。穿孔71可以被设置成格栅图案,该格栅图案具有选择以提供足以根据需要排放充气气体的流动横截面的孔直径和间距。格栅图案可以具有例如扬声器的罩经常使用的多个偏移行。
图10示出了具有多个穿孔72的门内衬70,多个穿孔72在碰撞区域中形成并且根据标志图案设置。如在此所使用的,标志图案是指描绘所需形象化的文本元素或画报元素的任何风格化的布置。
除了如图所示的固定结构之外,撕开或弹开的动态元素例如系链的插头或压力响应区域允许气体流动而不形成显著的背压。如图11所示,例如,门内衬70可以设置有用于接收插头77的孔76,插头77与气囊元件中的排气开口对齐。插头77可以类似于“移除罩”,“移除罩”当没有安装特定的可选设备但正在使用公共装饰板时通常用于车辆中的成型的塑料装饰表面。插头77被配置成使得将插头保持在孔76中的保持力比它在主动垫展开期间从充气气体接收的力小得多。
如图12所示,插头77具有主体80,主体80支撑与壁75的内侧面连接的支柱或夹子81和82和与壁75的外侧面接合的唇缘或突起83。支柱81和82是响应于充气气体施加到主体80的压力可弯曲的,从而将插头77从孔76释放。系链84可以被附接到插头77和壁75,如果需要的话,用于在插头77从孔76弹出之后保持插头77。可选择地,由于在展开期间主动杂物箱门被关闭,所以系链可能是不必要的,因为插头77将在汽车向前方向被弹出到关闭的杂物箱内。
图13示出了替代实施例,其中壁75设置有由撕裂接缝85限定的连接片86。连接片86包括铰链延伸部87以形成活动铰链,使得一旦充气,壁75就沿着撕裂接缝85撕开以打开与气囊壁中的排气开口重合的排气孔。连接片86向外枢转并且通过铰链87保持。如图14所示,撕裂接缝85由刻痕线形成,刻痕线延伸通过壁75的厚度的路径的大部分。未切割材料的厚度被控制使得撕裂发生在足够低的压力。撕裂接缝85的刻痕可以使用激光切割来获得或通过本领域中已知的刀切割来获得。
Claims (11)
1.一种用于安装在机动车辆中的仪表板的开口中的主动杂物箱门,包含:
塑料成型的前壁,所述塑料成型的前壁用于从所述开口向外展开;
塑料成型的气囊元件,所述塑料成型的气囊元件沿着外周边通过热焊缝与所述前壁接合以形成充气腔,其中所述气囊元件包括邻近所述焊缝的至少一个大体上周向褶皱部,所述至少一个大体上周向褶皱部用于在碰撞事件期间响应于充气气体注入到所述充气腔中而展开;以及
门内衬,所述门内衬接合到所述气囊元件的中心区域并且形成所述气囊元件后面的总体上连续的褶皱部,所述门内衬与所述仪表板连接以提供用于所述气囊元件的膨胀的反作用表面;
其中所述褶皱部具有靠近所述门内衬设置的峰,其中所述峰包括划定所述门内衬上的碰撞区域的排气开口,并且其中所述门内衬包括多个穿孔,所述多个穿孔在所述碰撞区域中,允许充气气体从所述排气开口流动通过所述门内衬。
2.根据权利要求1所述的主动杂物箱门,其中所述褶皱部具有多个排气开口,所述多个排气开口在所述峰中划定多个碰撞区域,并且其中每个所述碰撞区域包括各自的多个穿孔。
3.根据权利要求1所述的主动杂物箱门,其中所述穿孔被设置成格栅图案。
4.根据权利要求1所述的主动杂物箱门,其中所述穿孔被设置成标志图案。
5.根据权利要求1所述的主动杂物箱门,其中所述门内衬是由模制塑料制成,并且其中所述门内衬被热焊接到所述气囊元件。
6.根据权利要求1所述的主动杂物箱门,其中所述穿孔通过由所述充气气体弹出的各自的插头封闭。
7.根据权利要求1所述的主动杂物箱门,其中所述穿孔是由响应于所述充气气体而撕开的各自的撕裂接缝限定。
8.一种主动杂物箱门,包含:
充气腔,所述充气腔包括膨胀的前壁和气囊壁,所述气囊壁具有褶皱部,所述褶皱部具有排气孔;以及
内衬,所述内衬形成所述气囊壁后面的总体上连续的褶皱部以提供用于所述气囊的膨胀的反作用表面;
其中所述内衬包括穿孔,所述穿孔在由所述排气孔划定的碰撞区域中以允许离开所述排气孔的充气气体流动通过所述内衬。
9.一种用于安装在机动车辆中的仪表板的开口中的主动杂物箱门,包含:
塑料成型的前壁,所述塑料成型的前壁用于从所述开口向外展开;
塑料成型的气囊元件,所述塑料成型的气囊元件沿着外周边通过热焊缝与所述前壁接合以形成充气腔,其中所述气囊元件包括邻近所述焊缝的至少一个大体上周向褶皱部,所述至少一个大体上周向褶皱部用于在碰撞事件期间响应于充气气体注入到所述充气腔中而展开;以及
门内衬,所述门内衬接合到所述气囊元件的中心区域并且形成所述气囊元件后面的总体上连续的褶皱部,所述门内衬与所述仪表板连接以提供用于所述气囊元件的膨胀的反作用表面;
其中所述褶皱部具有设置为靠近所述门内衬的峰,其中所述峰包括划定所述门内衬上的碰撞区域的排气开口,并且其中所述门内衬包括在所述碰撞区域中的压力释放部件,所述压力释放部件响应于所述充气气体而打开以允许所述充气气体从所述排气开口流动通过所述门内衬。
10.根据权利要求9所述的主动杂物箱门,其中所述压力释放部件包含孔和可移动插头。
11.根据权利要求9所述的主动杂物箱门,其中所述压力释放部件包含撕裂接缝,所述撕裂接缝限定连接片和活动铰链。
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US9663058B1 (en) * | 2016-01-27 | 2017-05-30 | Ford Global Technologies, Llc | Deployable plastic knee bolster with off-centered telescoping support chamber |
US10363897B2 (en) * | 2017-10-02 | 2019-07-30 | GM Global Technology Operations LLC | Passenger airbag module |
US11718262B2 (en) | 2020-03-25 | 2023-08-08 | Volvo Car Corporation | Knee airbag configuration |
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US6758493B2 (en) * | 1998-08-07 | 2004-07-06 | Delphi Technologies, Inc. | Passenger side active knee bolster |
JP4011441B2 (ja) * | 2002-05-10 | 2007-11-21 | ダイハツ工業株式会社 | 車両のインストルメントパネル構造 |
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