| 摘要 |
A vehicle seat includes a seat back frame of a rectangular shape having a pair of side frames, upper and lower seat springs mounted between the side frames, and a flexible cushion plate in the form of a single plate attached to the seat springs. The cushion plate has a lower wide section supporting the vicinity of ilia (S) of a seated occupant (P), and a narrow middle section for reducing hold performance for the vicinity of a waist of the seated occupant (P). The cushion plate has an upper edge projecting slightly higher than a ninth dorsal vertebra (R) of the seated occupant (P).
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