Patent ID: 9193288
Filing Date: 2015-11-24
Classification: B60N

Abstract:
1. A lumbar support device, comprising: a seat back frame; a warped plate supported by the seat back frame to press a back of a seated person; and a reinforcing plate that reinforces the warped plate, the reinforcing plate being able to curve together with the warped plate, wherein the warped plate includes a holder that holds a first end portion of the reinforcing plate, and a plurality of non-interference portions that allow movement of the reinforcing plate relative to the warped plate, the holder holds the first end portion of the reinforcing plate to allow the movement relative to the warped plate to be controlled, the non-interference portions allow movement of a second end portion of the reinforcing plate in a vertical direction of a seat back relative to the warped plate and support a part of the reinforcing plate to be freely movable, and the non-interference portions are separately arranged with a space therebetween in which the reinforcing plate is exposed.