OCCUPANT PROTECTION DEVICE

摘要

An occupant protection device includes: a lumbar support section that is displaceable between an upper limit position and a lower limit position, and is displaceable between an advanced position pressing against the lumbar region and a retreated position further to a seatback rear side than the advanced position; a displacement mechanism that displaces a frontmost location of the lumbar support section; a rear collision prediction section that predicts a rear-end collision to a vehicle; and an actuation controller that, in cases in which a vehicle rear-end collision has been predicted by the rear collision prediction section in a state in which the frontmost location of the lumbar support section is not at the lower limit position, controls the displacement mechanism, and sets the frontmost location at the lower limit position and at the advanced position.

主权项

1. An occupant protection device comprising:
a lumbar support section that is provided at a seatback of a vehicle seat, that supports a lumbar region of an occupant seated on a seat cushion of the vehicle seat, and that has a frontmost location disposed furthest to a seatback front side, the frontmost location is displaceable at least between an upper limit position in a seatback up-down direction and a lower limit position in the seatback up-down direction, the upper limit position being a position supporting an upper portion side of the lumbar region and the lower limit position being a position supporting a lower portion side of the lumbar region, and the frontmost location is also displaceable between an advanced position pressing against the lumbar region and a retreated position further to a seatback rear side than the advanced position; a displacement mechanism that displaces the frontmost location of the lumbar support section; a rear collision prediction section that predicts a rear-end collision to a vehicle; and an actuation controller that, in cases in which a vehicle rear-end collision has been predicted by the rear collision prediction section in a state in which the frontmost location of the lumbar support section is not at the lower limit position, controls the displacement mechanism, and sets the frontmost location at the lower limit position and at the advanced position.