| 摘要 |
An automobile seat includes a seat cushion, a seat back tiltably mounted on the seat cushion, and a head rest mounted on an upper portion of the seat back. The automobile seat also includes a seat cushion frame, a pair of side frames mounted on the seat cushion frame, a seat back frame mounted on the pair of side frames so as to be rockable within a limited range of angle, a seat back frame rocking mechanism for causing, when an acceleration greater than a predetermined value is inputted from behind a vehicle body, the seat back frame to undergo a rocking motion, and a rocking motion preventing member for preventing, when the acceleration greater than the predetermined value is not inputted from behind the vehicle body, the seat back frame rocking mechanism from causing the seat back frame to undergo the rocking motion.
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