Vehicle seat control device, vehicle seat control method and vehicle seat control program

1. A vehicle seat control device comprising:

a collision prediction part that predicts a collision direction of a collision occurring in a vehicle;

a first driving part that rotates a vehicle seat around an axis extending in an upward/downward direction;

a controller that controls the first driving part and changes a direction of the vehicle seat so that a back surface of a backrest section of the vehicle seat is directed toward the collision direction on the basis of the predicted collision direction; and

a body protecting section that deforms at least one of a sitting surface of the vehicle seat and a side support included in a backrest section and that protects an occupant's body,

wherein the controller operates the body protecting section in response to detecting that rotation of the vehicle seat has not terminated prior to an occurrence of the collision predicted by the collision prediction part.

2. The vehicle seat control device according to claim 1 ,

wherein the collision prediction part further predicts an aspect of the collision occurring in the vehicle, and

the controller controls the first driving part according to a direction or a rotating speed of the vehicle seat determined from a plurality of directions or a plurality of rotating speeds of the vehicle seat on the basis of an aspect of the predicted collision.

3. The vehicle seat control device according to claim 1 ,

wherein the collision prediction part further predicts a time until the collision occurring in the vehicle, and

the controller controls the first driving part according to a rotating speed determined from a plurality of rotating speeds of the vehicle seat on the basis of a length of the predicted time.

4. The vehicle seat control device according to claim 1 ,

wherein, the collision prediction part updates the collision direction by generating an updated prediction, and when the collision direction is updated before the collision occurs, the controller controls the first driving part on the basis of the updated prediction of the collision direction, and adjusts a direction of the vehicle seat.

5. The vehicle seat control device according to claim 1 , further comprising a second driving part that causes a side support of a backrest section of the vehicle seat to protrude toward an occupant,

wherein the controller controls the second driving part such that the side support is caused to protrude after the vehicle seat has been rotated.

6. The vehicle seat control device according to claim 1 , further comprising a third driving part that moves a sitting surface of the vehicle seat in a rising direction,

wherein the controller changes the direction of the vehicle seat by controlling the first driving part while raising the sitting surface by controlling the third driving part when a collision is predicted by the collision prediction part.

7. The vehicle seat control device according to claim 1 , further comprising a third driving part that moves a sitting surface of the vehicle seat in a rising direction,

wherein the controller controls the third driving part such that the sitting surface is raised after the collision has occurred.

8. The vehicle seat control device according to claim 1 , further comprising a speed reducing part that, after the vehicle seat has rotated in the opposite direction with respect to the collision direction by the controller, trans-laterally moves the vehicle seat in the collision direction at a speed lower than a collision speed.