CN108859348A - 车辆的软触摸内部装饰件 - Google Patents
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Abstract
本发明公开了车辆的软触摸内部装饰件,所述软触摸内部装饰件具有基底、软触摸层和双层合成皮肤,所述双层合成皮肤具有低重量并且包括装饰性前层和具有填料的支撑性后层。所述合成皮肤具有减少的重量,并且当放置在内部装饰件下方的气囊被触发时具有良好的性能,以确保所述气囊可靠地释放,同时满足这种内部部件即使经过多年的使用也通常需要的高质量的美学要求。
Description
技术领域
本发明涉及车辆的软触摸内部装饰件,该软触摸内部装饰件具有基底、软触摸层和双层合成皮肤,该双层合成皮肤具有低重量并且包括装饰性前层和具有填料的支撑性后层。
背景技术
车辆的软触摸内部装饰件通常包括基底、软触摸层和装饰性皮肤。
装饰性皮肤可以是天然皮肤如皮革或合成皮肤如PVC、TPU或TPE皮肤。
合成皮肤通常在车辆内部用作不同内部装饰件如仪表板、门板或立柱装饰件的装饰性覆盖件,因为这种皮肤允许内部装饰件适合不同车辆模型的各种各样的风格。
这是因为合成皮肤的制造工艺能够形成不同的纹理和颜色。
众所周知,有多种工艺可以制造汽车产业的这种合成皮肤。其中的一些例子是凝塑成型或喷涂成型。这些工艺中通常使用的材料是PVC、TPU或TPE。
这些传统合成皮肤的主要目标之一是减轻重量。
解决这一目标的一种方法是减小合成皮肤的厚度。这在大型部件如仪表板的情况下尤其相关,其中减少十分之几毫米意味着减重明显。
然而,当合成皮肤的厚度减少太多时,就会出现其他问题,尤其是美学问题和安全问题。
美学问题是因为厚度减少太多的皮肤在皮肤制造过程中由于其收缩倾向,以及在内部装饰件的制造过程中由于软泡沫层材料的通常较高的温度而更容易劣化。此外,当内部装饰件用于车辆内部,并且在经过多年使用后,厚度减少太多的皮肤也更容易劣化。
安全问题是其中最重要的问题。当合成皮肤太薄时,当放置在内部装饰件下面的气囊被触发的时候,这个问题是由于合成皮肤的不受控制的性能而引起的。
当合成皮肤变得更薄时,它流动而不是撕裂的倾向就越大,从而失去对皮肤撕裂方式的控制,因而阻止了气囊的正确部署。
当合成皮肤材料暴露在高温下,例如,夏季里在阳光下经过几个小时后,这个问题变得更糟。
解决重量减轻目标的另一种方法是用放置在合成皮肤背侧的较轻的第二层替换外部高质量的美学合成皮肤的厚度的一部分,以这种方式实现合成皮肤的表面密度整体减小的目的。根据这一解决方案,已知的是双层皮肤,该双层皮肤包括厚度较小的高质量装饰性前层和由泡沫制成的支撑性后层。后层的泡沫构型允许总合成皮肤的密度减小,因而它的总重量减少。
说明这一解决方案的一个例子是德国专利DE102013215107。
然而,在这个第二情况下,可以证实的是,当气囊被触发时,合成皮肤的性能也是不受控制的,因为不良撕裂的风险变得较高,因此气囊不恰当部署且颗粒不受控制地飞出的风险也变得较高。
在这个先例中,第二皮肤层包括尺寸非常不同的非均质泡沫状后层,这是由于不规则空隙的存在而引起的。这形成了第二皮肤层,其机械性质缺乏同质性。因此,在触发气囊的时候,合成皮肤的撕裂线的起始点和路径变得不可预测且不受控制。
发明内容
为解决上述问题,本发明的目的是提供一种车辆的软触摸内部装饰件,该软触摸内部装饰件具有合成皮肤,该合成皮肤具有减少的重量,并且当放置在内部装饰件下方的气囊被触发时具有良好的性能,以确保气囊可靠地释放,同时满足这种内部部件即使经过多年的使用也通常需要的高质量的美学要求。
本发明的车辆的软触摸内部装饰件,包括:基底,软触摸层,合成皮肤,所述合成皮肤具有:装饰性前层,支撑性后层,其中所述装饰性前层和所述支撑性后层紧密地相互粘结,其中所述合成皮肤的总厚度小于1.2 mm,所述支撑性后层的厚度大于所述装饰性前层的厚度,其特征在于,所述支撑性后层包括填料,所述填料的最大尺寸小于0.4 mm并且重量比小于所述支撑性后层的总重量的10%。
优选地,所述软触摸层为间隔织物或泡沫。
优选地,所述填料的所述最大尺寸小于0.3 mm。
优选地,所述支撑性后层为泡沫。
优选地,所述填料选自由微颗粒、纤维和微球体组成的组。
优选地,所述纤维包括纤维素纤维。
优选地,所述微球体包括空隙微球体。
优选地,所述装饰性前层的材料是通常通过凝塑成型来处理的材料之一。
优选地,所述材料选自由聚氯乙烯、热塑性弹性体和热塑性聚氨酯组成的组。支撑性后层与装饰性前层之间的紧密粘结使得支撑性后层的机械性质转移到整个合成皮肤,从而改善了合成皮肤的性能。
厚度低于1.2 mm的合成皮肤的特定构型允许减小合成皮肤的重量,因此减小内部装饰件的总重量。
具有两个层,具体地讲,装饰性高质量前层和支撑性后层的合成皮肤的特定构型允许保持良好的美学状态并且当气囊被触发时保持对气囊部署的充分控制。
由于装饰性前层可以被选择成具有良好的美学性质,这可在任何时候得到保持,并且在由于支撑性后层充当保护层而引起的高要求温度条件下,尤其在软触摸内部装饰件的制造过程中,良好的美学状态是可能的。
当气囊被触发时,合成皮肤的充分性能由于支撑性后层内填料的存在而是可能的,填料具有预定义的低重量比和特定的低尺寸。
一方面,填料在支撑性后层的结构中形成不连续部分。当气囊以合成皮肤更容易断裂的方式被触发时,这些不连续部分允许减小该层的断点限制。因此,可能在合成皮肤的材料开始流动之前,开始撕裂合成皮肤。
另一方面,填料的较小尺寸允许填料的良好分布,而不管是否包含低量的填料。
因此,整个支撑性后层上不连续部分的存在是均质的,从而允许确保其端点限制的减小。
因此,当气囊被触发时,皮肤易于撕裂,撕裂根据预定义方式,从预定义点开始,在适当的时候且因此以受控方式进行。这涉及受控的气囊部署。
此外,所用填料的量减少允许合成皮肤的总重量保持减少。
附图说明
本说明书通过一组附图来完善,这组附图示出了一个优选实施方案而决不限制本发明。
图1示出了车辆的软触摸内部装饰件的示意性横截面图,其中可以了解软触摸内部装饰件的结构的不同层。
图2示出了根据第一实施方案的图1所示细节D的示意性放大视图。
图3示出了根据第二实施方案的图1所示细节D的示意性放大视图。
图4示出了根据第三实施方案的图1所示细节D的示意性放大视图。
具体实施方式
下面结合附图和具体实施例对本发明作进一步说明,以使本领域的技术人员可以更好的理解本发明并能予以实施,但所举实施例不作为对本发明的限定。
图1示出了本发明的车辆的软触摸内部装饰件1。软触摸内部装饰件1包括:
-基底2,
-软触摸层3,
-以及合成皮肤4,合成皮肤4具有:
装饰性前层4.1,
以及支撑性后层4.2。
装饰性前层4.1和支撑性后层4.2紧密地相互粘结。这意味着支撑性后层4.2.的机械性质被转移到整个合成皮肤4,从而改善了合成皮肤的性能。
基底2层可由例如塑性材料如聚丙烯(PP)、丙烯腈丁二烯苯乙烯(ABS)制成或可由复合材料如具有任何种类的增强材料的塑料基质制成。
软触摸层3可以是间隔织物,也可以是由聚氨酯(PU)制成的泡沫。
合成皮肤4可由例如聚氯乙烯(PVC)、热塑性弹性体(TPE)或热塑性聚氨酯(TPU)制成。
这种材料通常通过凝塑成型来处理。这样,本发明的合成皮肤4优选地通过凝塑成型来制造。
优选地,装饰性前层4.1和支撑性后层4.2二者均由同一物料族制成,但它们也可由不同的材料族制成。
合成皮肤4的总厚度小于1.2 mm,优选地小于1 mm,其中支撑性后层4.2的厚度大于装饰性前层4.1的厚度。
根据本发明的一个特定实施方案,支撑性后层4.2的厚度为0.6 mm并且装饰性前层4.1的厚度为0.4 mm。
另外,如图2示出的,支撑性后层包括填料5,填料的最大尺寸小于0.4 mm,优选地小于0.3 mm,并且它的重量比小于支撑性后层4.2的总重量的10%。
填料可以选自微颗粒、纤维和微球体。
在微颗粒的情况下,这些微颗粒可以选自天然材料、合成材料和矿物材料。
在纤维的情况下,这些纤维可以选自天然材料、人造材料、合成材料和矿物材料。具体地讲,一个优选例子是纤维素纤维如天然纤维或人工纤维诸如纤维胶的使用。一个优选例子是由玄武岩或玻璃制成的短纤维的使用。
在微球体的情况下,这些微球体可以选自合成材料和矿物材料。
在其中填料5包括纤维的特定情况下,合成皮肤4与软触摸泡沫层3之间的粘附力由于纤维的纵横比而大大提高。
一般来说,将与软触摸泡沫层3接触的合成皮肤4的表面改性为粗糙表面的任何种类的填料5改进了泡沫层3和合成皮肤4这两个层之间的粘附力。
这使得支撑性后层4.2的机械性能更多地转移到整个组件,从而当气囊被触发时,改进了合成皮肤4的正确撕裂。
根据图3所示本发明的改进,支撑性后层4.2为泡沫。为了使合成皮肤4的总重量减少得更多,一旦皮肤的机械性能由于填料5的加入而得到改进,支撑性后层就可能起泡,从而使组件的机械性能保持处于控制之下。因此,支撑性后层4.2包括在这种特定情况下通过纤维形成的填料5以及形成于泡沫结构中的空隙或单元6。
根据图4所示的特定情况,填料5包括空隙微球体7,除了引起不连续性部分的均匀分布外,空隙微球体7还允许复合泡沫效应,从而也实现额外的减重。
以上所述实施例仅是为充分说明本发明而所举的较佳的实施例,本发明的保护范围不限于此。本技术领域的技术人员在本发明基础上所作的等同替代或变换,均在本发明的保护范围之内。本发明的保护范围以权利要求书为准。
Claims (9)
1.车辆的软触摸内部装饰件(1),包括:
-基底(2),
-软触摸层(3),
-合成皮肤(4),所述合成皮肤具有:
装饰性前层(4.1),
支撑性后层(4.2),
其中所述装饰性前层(4.1)和所述支撑性后层(4.2)紧密地相互粘结,
其中所述合成皮肤(4)的总厚度小于1.2 mm,所述支撑性后层(4.2)的厚度大于所述装饰性前层(4.1)的厚度,
其特征在于,
所述支撑性后层(4.2)包括填料(5),所述填料的最大尺寸小于0.4 mm并且重量比小于所述支撑性后层(4.2)的总重量的10%。
2.根据权利要求1所述的车辆的软触摸内部装饰件(1),其特征在于,所述软触摸层(3)为间隔织物或泡沫。
3.根据权利要求1所述的车辆的软触摸内部装饰件(1),其特征在于,所述填料(5)的所述最大尺寸小于0.3 mm。
4.根据权利要求1所述的车辆的软触摸内部装饰件(1),其特征在于,所述支撑性后层(4.2)为泡沫。
5.根据权利要求1所述的车辆的软触摸内部装饰件(1),其特征在于,所述填料(5)选自由微颗粒、纤维和微球体组成的组。
6.根据权利要求5所述的车辆的软触摸内部装饰件(1),其特征在于,所述纤维包括纤维素纤维。
7.根据权利要求5所述的车辆的软触摸内部装饰件(1),其特征在于,所述微球体包括空隙微球体(7)。
8.根据权利要求1所述的车辆的软触摸内部装饰件(1),其特征在于,所述装饰性前层(4.1)的材料是通常通过凝塑成型来处理的材料之一。
9.根据权利要求8所述的车辆的软触摸内部装饰件(1),其特征在于,所述材料选自由聚氯乙烯、热塑性弹性体和热塑性聚氨酯组成的组。
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