Abstract: A lifting device for raising and lowering a cushion frame of a vehicle seat includes: a lifter link configured to be rotationally displaced to thereby raise or lower the cushion frame; a swing link configured to transmit a force for rotating the lifter link to the lifter link; a screw rod rotatably coupled to the swing link; a driving device configured to displace the screw rod along a first axis; and a first restricting portion configured to restrict displacement of a coupling portion between the swing link and the screw rod beyond a predetermined dimension in a second axis.

Abstract: A lifter for adjusting the height of a frame 10, 12, 14 that is to be vertically movably mounted on a vehicle floor is integrally formed with a suspension unit S for absorbing vibration inputted to the frame 10, 12, 14. The suspension unit S includes a magnet unit or a magnetic fluid damper.