| 摘要 |
An infant-restraining protective seat (1) includes a seat back (3) tiltably attached to the body (7) of a seat portion via a turning shaft (20), with the seat portion (2) and seat back (3) being foldable. A torsion spring (54) is interposed between the body (7) of he seat portion and the seat back (3). The torsion spring (54) is adapted to assume a free state when an upper hook pin (52) is at an .alpha. position. Under these conditions, the seat back (3) is capable of tilting forward to .beta. under its own weight. When the seat back 3 is tilted in the direction of .beta., shock is mitigated by the torsion spring (54). When the seat back (3) is tilted toward .gamma. and .delta., half-latching and play in the back-and-forth direction are prevented. When the infant-restraining protective seat (1) is not in use, the protective seat is folded up to reduce its size and can then be stored. The seat (1) can be carried about and set up on a vehicle seat much more easily. In addition, only a small amount of space is necessary for storage.
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