| 摘要 |
<p>A vehicle seat device includes a first rail (3) having a base portion (12) and a side wall portion (11) bent so as to form a first bent portion (13), the side wall portion including an unlocking range and a locking range, the locking range including plural lock holes (11a), a second rail (4) arranged so as to slide relative to the first rail, the second rail having a second bent portion (22), and a lock member (25) rotatably provided to the second rail and having a lock pawl (25a) in order to allow and prohibit the second rail to slide relative to the first rail; wherein the first bent portion has a distal end portion (13a) extending in an almost vertical direction within a range corresponding to the locking range to a first vertical length (L1), which is shorter than a second vertical length (L2) of the distal end portion within a range corresponding to the unlocking range.
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