To automatically adjust the position of a headrest without affecting occupant's operation of a vehicle as much as possible with a simple structure.
An apparatus for adjusting a headrest position is provided with: a detection electrode 1 and a detection circuit 2 built in a headrest 13 fitted to a seat 10; an arithmetic circuit 5; a headrest drive motor 3; and a motor control circuit 4. The arithmetic circuit 5 calculates a distance between the head 22 of an occupant 21 and the headrest 13 based on an electrostatic capacity from the detection circuit 2. The motor control circuit 4 controls the headrest drive motor 3 according to the calculation result and adjusts the position of the headrest 13. The arithmetic circuit 5, when a vehicle signal from a vehicle signal output circuit 6 is a particular signal, outputs the calculation result for stopping movement of the head rest 13 or moving the position of the headrest 13 to an origin return position, to the motor control circuit 4.
| JPS639405 | UP-AND-DOWN MOVABLE HEADREST APPARATUS |
| JPS5977453 | [Title of the device] A sheet device with a headrest |
| WO/2005/065992 | HEAD REST |
SAKIYAMA KOJI
YAMAGUCHI YUICHIRO
OSAKI TAKUYA
| JP2006160152A | 2006-06-22 |
Kazuya Chikatsu