| 摘要 |
PROBLEM TO BE SOLVED: To ensure reliability of use while a weight increase is suppressed. SOLUTION: In the slide device for a vehicle seat provided with lower and upper rails 1 and 2 and a lock plate 3, through provision with an inward fall regulating means P to regulate fall deformation to the inside in the direction of the width of rail of the suspension plate parts 14 and 14 of a lower rail 1 in a slide regulation state in which the lock plate 3 is moved upward, fall deformation to the inside in the direction of the width of the rail of the suspension plate parts 14 and 14 is regulated by the fall regulation means P and spread deformation of the groove part 17 of the lower rail 1 is prevented from occurring. This constitution reliably prevents the occurrence of peel operation of the upper rail 2 from the lower rail 1, whereby insurance of reliability on the use of a slide device and the decrease of its weight are compatible with each other.
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