| 摘要 |
A positioning apparatus of a seat for a vehicle includes a first frame (4) adapted to be supported by a member (71, 72) provided on a vehicle floor (9) and adapted to support a seat cushion (81), a second frame (3) rotatably supported by the first frame (4) and vertically rotatably supporting the seat cushion (81), a link member (24, 26) rotatably supported by the first frame (4) and linked to the second frame (3) for rotatably moving the second frame (3) relative to the first frame (4), and a rotational member (1) rotatably supported by the first frame (4) and including an eccentric shaft portion (11), wherein the eccentric shaft portion (11) has a first rotational portion (11a) including a first rotational center (B) about which the second frame (3) rotates relative to the first frame (4) and a second rotational portion (13a) including a second rotational center (A) about which the rotational member (1) rotates relative to the first frame (4) and which is eccentrically provided relative to the first rotational center (B).
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