Seat device for vehicle
First Claim
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1. A seat apparatus arranged in a vehicle, the seat apparatus comprising:
- a seat having a seating surface;
a seat back arranged at a rear part of the seat;
a headrest supported by the seat back, the headrest including a base portion and a movable portion that is movable relative to the base portion, wherein the movable portion moves between a retracted position proximate to the base portion and an extended position distant from the base portion;
a drive unit for driving the movable portion;
a load detection unit for detecting a load applied to the seating surface of the seat; and
a control unit for determining from a detection signal input by the load detection unit whether or not the load applied to the seating surface by a vehicle occupant seated on the seat has moved and controlling the drive unit to move the movable portion toward the extended position when determining that the load applied to the seating surface has moved.
1 Assignment
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Accused Products
Abstract
A headrest 5 includes a base portion 5a and a movable portion 5b, which is movable relative to the base portion 5a. The movable portion 5b is moved and driven by a drive unit 8a between a retracted position 5X proximate to the base portion 5a and an extended position 5Y distant from the base portion 5a. A control unit 7 controls the drive unit 8a to move the movable portion 5b toward the extended position 5Y when determining that a vehicle occupant seated on the seat 3 caused movement of the load applied to a seating surface 3a of the seat 3.
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Citations
12 Claims
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1. A seat apparatus arranged in a vehicle, the seat apparatus comprising:
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a seat having a seating surface; a seat back arranged at a rear part of the seat; a headrest supported by the seat back, the headrest including a base portion and a movable portion that is movable relative to the base portion, wherein the movable portion moves between a retracted position proximate to the base portion and an extended position distant from the base portion; a drive unit for driving the movable portion; a load detection unit for detecting a load applied to the seating surface of the seat; and a control unit for determining from a detection signal input by the load detection unit whether or not the load applied to the seating surface by a vehicle occupant seated on the seat has moved and controlling the drive unit to move the movable portion toward the extended position when determining that the load applied to the seating surface has moved. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification