首页> 外国专利> REAR IMPACT HEAD DISPLACEMENT REDUCTION THROUGH THE APPLICATION OF STRAIN RATE HARDENING CUSHIONING MATERIALS

REAR IMPACT HEAD DISPLACEMENT REDUCTION THROUGH THE APPLICATION OF STRAIN RATE HARDENING CUSHIONING MATERIALS

机译:通过应变率硬化缓冲材料的应用减少后部冲击头位移

摘要

A head restraint for a seat includes a core support structure supporting a dual rate cushioning foam. The dual rate cushioning foam includes a dilatant material that changes from a first compression rate providing a first stiffness to a second compression rate providing a second stiffness in response to a strain rate in the dilatant material rising above a pre-defined limit. The first compression rate at the first stiffness provides a softer feel to the occupant for normal operation of the vehicle. The second compression rate at the second stiffness provides a stiffer resistance to resist the sudden rearward movement of the occupant's head in the event of a sudden rear impact.
机译:用于座椅的头枕包括支撑双倍速率缓冲泡沫的芯支撑结构。双重速率缓冲泡沫包括膨胀材料,该膨胀材料响应于膨胀材料中的应变率升高到预定极限之上而从提供第一刚度的第一压缩率改变为提供第二刚度的第二压缩率。在第一刚度下的第一压缩率为车辆的正常操作向乘员提供了更柔软的感觉。在第二刚度下的第二压缩率提供了更强的抵抗力,以抵抗在突然向后撞击时乘员头部的突然向后移动。

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