Vehicle seat assembly having a pivot pitch
A vehicle seat assembly convertible between a use position and a non-use position. The vehicle seat assembly includes a seat with a seat cushion support, a seatback, a base that connects to a vehicle, a front pivot linkage supported by the base by a first joint and pivotally connected to the seat cushion support by a second joint, and a rear foot pivotally supported by the base by a third joint. A pivoting movement of the rear foot about the third joint is lockable. The rear foot is connected to the seatback by a fourth joint. The vehicle seat also includes a fifth joint that connects the seatback to the seat cushion support, wherein the fourth joint is a latch and the fifth joint provides a free pivot, and wherein the fourth joint is latched when the seat moves from the use position to a boarding non-use position.
1. A vehicle seat assembly convertible between a use position and a non-use position, the vehicle seat assembly comprising:
a seat with a seat cushion support;
a seatback;
a base configured to connect to a vehicle;
a front pivot linkage supported by the base by a first joint and pivotally connected to the seat cushion support of the seat by a second joint;
a rear foot pivotally supported on the base by a third joint, wherein a pivoting movement of the rear foot about the third joint is lockable, and wherein the rear foot is connected to the seatback by a fourth joint;
a fifth joint that connects the seatback to the seat cushion support, wherein the fourth joint is a latch and the fifth joint provides a free pivot, and wherein the fourth joint is latched when the seat moves from the use position to a boarding non-use position; and
a stop member including a stop plate supported on the base and located forward of the rear foot to contact the rear foot in the boarding non-use position.
2. The vehicle seat assembly of claim 1 , wherein the vehicle seat is further convertible to a folded non-use position by unlatching the latch at the fourth joint.
3. The vehicle seat assembly of claim 2 , wherein the latch comprises a recliner mechanism.
4. The vehicle seat assembly of claim 3 , wherein the latch comprises a recliner heart.
5. The vehicle seat assembly of claim 1 , wherein the stop member is connected to a mount supporting the first joint.
6. The vehicle seat assembly of claim 5 further comprising a bias spring for biasing the rear foot to pivot forward towards the stop member.
7. The vehicle seat assembly of claim 1 , wherein the seat cushion support comprises a rigid member.
8. The vehicle seat assembly of claim 1 further comprising a lock mechanism operatively coupling the rear foot to the base to lock the third joint.
9. A vehicle seat assembly convertible between a use position and a non-use position, the vehicle seat assembly comprising:
a seat with a seat cushion support;
a seatback;
a base configured to connect to a vehicle;
a front pivot linkage supported by the base by a first joint and pivotally connected to the seat cushion support of the seat by a second joint;
a rear foot pivotally support by the base by a third joint, wherein a pivoting movement of the rear foot about the third joint is lockable by a lock mechanism, and wherein the rear foot is connected to the seatback by a fourth joint;
a fifth joint that connects the seatback to the seat cushion support, wherein the fourth joint is a latch and the fifth joint provides a free pivot, and wherein the fourth joint is latched when the seat moves from the use position to a boarding non-use position;
a stop member located forward of the rear foot to contact the rear foot in the boarding non-use position, wherein the stop member includes a stop plate supported on the base; and
a biasing spring for biasing the rear foot to pivot forward towards the stop member.
10. The vehicle seat assembly of claim 9 , wherein the vehicle seat is further convertible to a folded non-use position by unlatching the latch at the fourth joint.
11. The vehicle seat assembly of claim 10 , wherein the latch comprises a recliner mechanism.
12. The vehicle seat assembly of claim 11 , wherein the latch comprises a recliner heart.
13. The vehicle seat assembly of claim 9 , wherein the stop member is connected to a mount supporting the first joint.
14. The vehicle seat assembly of claim 9 , wherein the seat cushion support comprises a rigid member.
15. The vehicle seat assembly of claim 9 , wherein the locking mechanism operatively couples the rear foot to the base to lock the third joint.
16. A vehicle comprising:
a cabin interior; and
a vehicle seat assembly convertible between a use position and a non-use position, the vehicle seat assembly comprising:
a seat with a seat cushion support;
a seatback;
a base connected to the vehicle in the cabin interior;
a front pivot linkage supported by the base by a first joint and pivotally connected to the seat cushion support of the seat by a second joint;
a rear foot pivotally supported on the base by a third joint, wherein a pivoting movement of the rear foot about the third joint is lockable, and wherein the rear foot is connected to the seatback by a fourth joint;
a fifth joint that connects the seatback to the seat cushion support, wherein the fourth joint is a latch and the fifth joint provides a free pivot, and wherein the fourth joint is latched when the seat moves from the use position to a boarding non-use position; and
a stop member including a stop plate supported on the base and located forward of the rear foot to contact the rear foot in the boarding non-use position.
17. The vehicle of claim 16 , wherein the vehicle seat is further convertible to a folded non-use position by unlatching the latch at the fourth joint.
18. The vehicle of claim 16 further comprising a bias spring for biasing the rear foot to pivot forward towards the stop member.