CN205930619U - 一种用于汽车的安全气囊门盖板 - Google Patents

一种用于汽车的安全气囊门盖板 Download PDF

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CN205930619U
CN205930619U CN201620815431.8U CN201620815431U CN205930619U CN 205930619 U CN205930619 U CN 205930619U CN 201620815431 U CN201620815431 U CN 201620815431U CN 205930619 U CN205930619 U CN 205930619U
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air bag
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张方林
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Yanfeng International Automotive Technology Co Ltd
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Shanghai Yanfeng Jinqiao Automotive Trim Systems Co Ltd
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Priority to PCT/CN2017/094880 priority patent/WO2018019288A1/zh
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Priority to US16/259,199 priority patent/US10682975B2/en
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Abstract

本实用新型提供一种用于汽车的安全气囊门盖板，包括：依次设置的仪表板骨架层(1)，泡沫层(2)，以及仪表板表皮层(4)，还包括复合在仪表板表皮层(4)上的加强层(3)，所述加强层(3)位于所述泡沫层(2)和仪表板表皮层(4)之间，其中，复合在一起的仪表板表皮层(4)和加强层(3)上还具有依次贯穿所述加强层(3)的整个厚度以及仪表板表皮层(4)的部分厚度的表皮弱化线(5)。本实用新型提供的这样一种安全气囊门盖板加强了安全气囊低温爆破性能，减少了仪表板表皮层和泡沫断裂飞出的风险，极大地增强了驾乘人员的安全性。

Description

一种用于汽车的安全气囊门盖板
技术领域
本实用新型属于汽车加工成型技术领域，具体涉及一种用于汽车的安全气囊门盖板。
背景技术
汽车的内部环境直接与驾乘人员的身心感受密切相关，内饰强调触觉、手感、舒适性和观赏性等。半硬泡软质仪表板是在表皮和骨架之间填充有聚氨酯泡沫，既提高触感，给人一种舒适豪华的感觉，同时又具有吸收碰撞能量的功能，多用于中高档车上。随着人们对汽车内饰件的外观、功能及安全性的要求越来越高，副气囊式仪表板的需求加大，越来越多车型的仪表板被设计为无缝安全气囊仪表板，既无可视装接线，又能保证气囊正常开启，在仪表板反面气囊区加工出一条气囊撕裂线以确保气囊爆炸后能从仪表板中冲出来。
由于汽车仪表板表皮材料在低温下容易发脆，长周期老化后机械性能也会大大降低，综合这些因素，导致无缝安全气囊仪表板在低温爆破过程中，表皮和泡沫容易碎裂飞出，对驾乘人员产生安全隐患。因此，随着人们对汽车安全要求的不断提高，需要不断增强汽车安全气囊门盖板的低温性能。
专利US20110028625A1介绍了一种搪塑表皮粉末配方及其制造方法，该专利在PVC悬浮树脂中添加改性增塑剂，如线性偏苯三酸酯，改性己二酸酯，热稳定剂，光稳定剂等，在高速混合设备中共混得到改进搪塑粉末配方，其玻璃化转变温度可以降低至零下50度，并且长周期老化试验后力学性能保持良好，低温爆破没有碎片飞出，但是该专利的缺点是过程较复杂，除了常规的汽车内饰产品成型工艺外，还要增加特殊的共混设备，成本较高。
专利US7560515B2介绍了一种搪塑表皮粉末配方及其制造方法，该专利在搪塑粉末中添加部分交联的聚烯烃弹性体，其玻璃化转变温度可以降低至零下60度，并且长周期老化试验后力学性能保持良好，低温爆破没有碎片飞 出，但是该专利的缺点是过程较复杂，除了常规的汽车内饰产品成型工艺外，还要增加特殊的混合设备，成本较高。
综上所述，现有汽车安全气囊门盖板普遍低温性能较差，为了避免由此带来的安全隐患进行的原材料改性又对设备投入要求较高，并且生产周期较长。
实用新型内容
本实用新型的目的是提供一种用于汽车的安全气囊门盖板，从而解决现有技术中安全气囊门盖板由于低温性能差在爆破过程中表皮和泡沫容易碎裂飞出产生安全隐患的缺陷。
为了解决上述技术问题，本实用新型采用以下技术方案：
提供一种用于汽车的安全气囊门盖板，该安全气囊门盖板包括：依次设置的仪表板骨架，泡沫层，以及仪表板表皮层，还包括复合在仪表板表皮层上的加强层，所述加强层位于所述泡沫层和仪表板表皮层之间，其中，复合在一起的仪表板表皮层和加强层上还具有贯穿所述加强层的整个厚度以及仪表板表皮层的部分厚度的表皮弱化线。
所述表皮弱化线是在加强层和表皮复合在一起之后进行弱化得到的弱化线。
所述仪表板骨架层由聚丙烯复合材料制造而成。
所述泡沫层由异氰酸酯与聚醚多元醇反应得到聚氨酯泡沫制造而成。
所述加强层为水性聚氨酯涂层。
所述仪表板表皮层由选自聚氯乙烯、热塑性聚氨酯弹性体和热塑性聚烯烃弹性体中的一种的搪塑粉料成型。
本实用新型相对现有技术所具有的有益效果主要在于：
(1)在表皮层和泡沫层中间增加了加强层，加强层和表皮复合后再一起进行弱化，简化了汽车仪表板原材料改性的工艺周期，降低生产成本；
(2)在表皮层和泡沫层中间增加了加强层，加强层和表皮复合后再一起进行弱化，弱化线的断裂强度和断裂延伸率度保持不变，弱化线周围区域表皮的断裂强度和断裂延伸率上升，加强了安全气囊低温爆破性能，减少了仪 表板表皮层和泡沫层断裂飞出的风险，极大增强了驾乘人员的安全。
附图说明
参考随后的作为本实用新型的典型实施例示出的附图，本实用新型将更容易理解，但不应将其理解为对本实用新型范围的限制。
图1是根据本实用新型的一个优选实施方式的安全气囊门盖板的横截面视图。
其中，主要附图标记的含义如下：
1、仪表板骨架层 2、泡沫层 3、加强层 4、仪表板表皮层 5、表皮弱化线 6、骨架弱化线 H、弱化线残余厚度
具体实施方式
下面结合附图，给出本实用新型的较佳实施例，并予以详细描述，使能更好地理解本实用新型的功能、特点。
如图1所示，是根据本实用新型的一个优选实施例的安全气囊门盖板，该安全气囊门盖板包括：从下往上依次设置的仪表板骨架层1，泡沫层2，加强层3以及仪表板表皮层4，其中，加强层3复合在仪表板表皮层4上，复合在一起的仪表板表皮层4和加强层3上还具有贯穿所述加强层3的整个厚度以及仪表板表皮层4的部分厚度的表皮弱化线5。所述仪表板骨架层1的下方还设有骨架弱化线6。该表皮弱化线5的顶部到仪表板表皮层4皮纹面的距离为弱化线残余厚度，如图1中H所示。
在该优选实施例中，所述表皮弱化线5是在加强层3和仪表板表皮层4复合在一起之后进行弱化得到的。
根据本实用新型的又一优选实施例，仪表板骨架层1由聚丙烯复合材料制造而成。
根据本实用新型的一个优选实施例，本实用新型中泡沫层2由异氰酸酯与聚醚多元醇反应得到聚氨酯泡沫制造而成。
根据本实用新型的一个优选实施例，本实用新型中加强层3为水性聚氨酯涂层。
根据本实用新型的一个优选实施例，成型仪表板表皮层4的搪塑粉料可以为聚氯乙烯(PVC)、热塑性聚氨酯弹性体(TPU)和热塑性聚烯烃弹性体(TPO)等，该搪塑粉料既能够生产形状复杂的产品，而且皮纹纹理均匀美观，手感柔软舒适，表皮内应力小，厚度均匀，具有良好的弹性及低收缩率，良好的机械性能，良好的耐老化性能。
根据本实用新型的又一优选实施例，本实用新型中仪表板表皮层4为PVC搪塑表皮。
根据本实用新型的一个优选实施例，表皮弱化线5由冷刀弱化而成。
上述实施例仅供说明本实用新型之用，而并非是对本实用新型的限制，有关技术领域的普通操作人员，在不脱离本实用新型范围的情况下，还可以做出各种变化和变形，因此所有等同的技术方案也应属于本实用新型的范畴，本实用新型的专利保护范围应由各权利要求限定。

Claims (5)

1.一种用于汽车的安全气囊门盖板，该安全气囊门盖板包括：依次设置的仪表板骨架层(1)，泡沫层(2)，以及仪表板表皮层(4)，其特征在于，还包括复合在仪表板表皮层(4)上的加强层(3)，所述加强层(3)位于所述泡沫层(2)和仪表板表皮层(4)之间，其中，复合在一起的仪表板表皮层(4)和加强层(3)上还具有贯穿所述加强层(3)的整个厚度以及仪表板表皮层(4)的部分厚度的表皮弱化线(5)。
2.根据权利要求1所述的安全气囊门盖板，其特征在于，所述仪表板骨架层(1)由聚丙烯复合材料制造而成。
3.根据权利要求1所述的安全气囊门盖板，其特征在于，所述泡沫层(2)由异氰酸酯与聚醚多元醇反应得到聚氨酯泡沫制造而成。
4.根据权利要求1所述的安全气囊门盖板，其特征在于，所述加强层(3)为水性聚氨酯涂层。
5.根据权利要求1所述的安全气囊门盖板，其特征在于，所述仪表板表皮层(4)由选自聚氯乙烯、热塑性聚氨酯弹性体和热塑性聚烯烃弹性体中的一种的搪塑粉料成型。
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