Patent ID: 6375262
Filing Date: 2002-04-23
Classification: B60N

Abstract:
An automotive seat-back structure comprising:a seat-back frame; supporting means carried by the seat-back frame, the supporting means being capable of swinging back and forth against an upper end of the seat-back frame and also capable of moving up and down against the upper end of the seat-back frame; a headrest supported by an upper end of the supporting means; an actuating member carried by a lower end of the supporting means, the actuating member being movable only on receipt of an impact pressure by a passenger's back; a first supporting member carried by a lower end of the seat-back frame; a second supporting member carried by either one of the actuating member and the supporting means; and a lumbar supporting member carried by the first supporting member and the second supporting member to support the passenger's lumbar vertebra on pressure, the lumbar supporting member being rotatable back and forth and also movable up and down.