| 摘要 |
<p>A vehicle seat lifter device of the present invention is designed to lift and lower a seat cushion with respect to a floor member (2) provided on a floor of a vehicle body. The lifter device includes: a pair of front and rear links (11, 12) each coupling a side frame (6) of the seat cushion and the floor member (2); a front bracket (3) and a rear bracket (4) each of which is fixed to the floor member (2) and to which respective lower ends of the front link (11) and the rear link (12) are swingably coupled; a front hitting segment (6a) formed in a front portion of the side frame (6) and located in spaced-apart relation to a front catch segment (3b) formed in the front bracket (3), wherein the front hitting segment (6a) has a shape conforming with that of the front catch segment (3b); and a rear hitting segment (6b) formed in a rear portion of the side frame (6) and located in spaced-apart relation to a rear catch segment (4a) formed in the rear bracket (4), wherein the rear hitting segment (6b) has a shape conforming with that of the rear catch segment (4a). In the lifter device, when the side frame (6) is displaced in the frontward direction along with a deformation of the front and rear links (11, 12) due to an impact force during a frontal collision, the front hitting segment (6a) of the side frame (6) is caught and stopped by the front catch segment (3b) of the front bracket (3), and, when the side frame (6) is displaced in the rearward direction along with a deformation of the front and rear links (11, 12) due to an impact force during a rear collision, the rear hitting segment (6b) of the side frame (6) is caught and stopped by the rear catch segment (4a) of the rear bracket (4).
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