Vehicle seat
AssigneeTs Tech Co., Ltd.
InventorsKenichi Nitsuma, Masaya Furuta
Life of this patent
Estimating the term…
Abstract
Provided is a vehicle seat which has a simple structure, prevents the lower back region of an occupant from sinking into the seat back, induces backward rotation of the entire upper body when a rear-end collision occurs, and reduces the degree to which the neck region of the occupant independently tilts backward, and is therefore able to effectively reduce the load on the neck region and so on of the occupant. A vehicle seat is provided with a neck-burden reduction element that, during a rear-end collision, causes a greater amount of backward movement of a connection point between the neck region and a torso region of the occupant than the amount of backward movement of a lower torso region of the occupant, and causes an upper torso region of the occupant to sink into the seat back.
Claims15
A vehicle seat comprising:
- a seat back frame comprising:
- side portions located on both sides of the seat back frame;
- an upper portion disposed in an upper area of the seat back frame;
- and
- a lower portion disposed in a lower area of the seat back frame;
- and
- a headrest disposed in the upper area of the seat back frame;
- wherein:
- the lower portion includes a lower frame extending between the side portions and a neck-burden reduction element;
- the neck-burden reduction element is anchored to the lower frame, extends in a horizontal direction, and is separated from the side portions by a predetermined distance;
- the neck-burden reduction element comprises a lower back advancement inhibiting member disposed in a position behind a lower back region of an occupant;
- the lower back advancement inhibiting member is anchored to an upper end portion and a lower end portion of the lower frame continuously in a right-to-left direction and is disposed to bulge forward further than the lower frame;
- the lower back advancement inhibiting member is formed as a hollow body provided with openings on both sides in the right-to-left direction;
- and
- the neck-burden reduction element, during a rear-end collision, causes a greater amount of backward movement of a connection point between a neck region and a torso region of an occupant than the amount of backward movement of a lower torso region of the occupant, and causes an upper torso region of the occupant to sink into a seat back.
A vehicle seat comprising:
- a seat back frame comprising:
- side portions located on both sides of the seat back frame;
- an upper portion disposed in an upper area of the seat back frame;
- and
- a lower portion disposed in a lower area of the seat back frame;
- and
- a headrest disposed in the upper area of the seat back frame;
- wherein:
- the lower portion includes a lower frame extending between the side portions and a neck-burden reduction element;
- the neck-burden reduction element extends in a horizontal direction, and is separated from the side portions by a predetermined distance;
- the neck-burden reduction element comprises a lower back advancement inhibiting member disposed in a position behind a lower back region of an occupant;
- and
- a reclining shaft is provided that penetrates through a space surrounded by a front surface, an upper surface and a lower surface of the lower back advancement inhibiting member.
Dependencies are inferred from the claim text.