Patent ID: 8103415

Claim:
A headrest for a vehicle, comprising: a headrest rear portion supported at a seatback; a headrest front portion movable between a fully closed position in which the headrest front portion is close to the headrest rear portion, and a fully open position in which the headrest front portion is away from the headrest rear portion; driving means for moving the headrest front portion; a capacitance sensor detecting a change in capacitance in association with an approach of the head of an occupant; controlling means for controlling the headrest front portion to move to the fully open position in response to information that a vehicle is approaching from the rear, the controlling means controlling the driving means to stop a movement of the headrest front portion when the head of the occupant is detected on the basis of a detection signal from the capacitance sensor, the controlling means including a first filter having a first cutoff frequency and a second filter having a second cutoff frequency lower than the first cutoff frequency; and wherein the controlling means control the first filter and the second filter to start operating at the same time as an operation start of the capacitance sensor.