Adjustable motor vehicle seat having mounting plates for occupant classification system (OCS)

1. A vehicle seat assembly comprising, in combination:

a seat;

seat mounting brackets for securing the seat to a vehicle structure to prevent relative movement therebetween;

a pair of laterally spaced apart track assemblies to selectively move the seat in a horizontal direction relative to the seat mounting brackets and the vehicle structure;

wherein each of the track assemblies includes a first track secured to the seat mounting brackets to prevent relative movement therebetween and a second track member operably connected to the first track member to selectively move the second track member relative to the first track member in the horizontal direction;

a plurality of weight sensing devices connected to the second track members for movement in the horizontal direction with the second track members relative to the first track members and the seat mounting brackets;

a pair of mounting plates supported by the weight sensing devices and movable with the weight sensing devices and the second tracks in the horizontal direction relative to the first track members and the seat mounting brackets;

at least one of the mounting plates having a seat belt attachment;

a seat belt secured to the seat belt attachment;

a vertical lift assembly operably connecting the mounting plates and the seat to selectively move the seat in a vertical direction relative to the mounting plates;

wherein the vertical lift assembly is supported by the mounting plates and the vertical lift assembly and the seat are movable with the mounting plates, the weight sensing devices, and the second tracks in the horizontal direction relative to the first track members and the seat mounting brackets; and

wherein loads of the seat belt are transmitted from the seat belt attachment to the vehicle structure through the mounting plates, the weight sensing devices, the track assemblies, and the seat mounting brackets without being transmitted through the vertical lift assembly.

2. The vehicle seat assembly according to claim 1 , wherein the weight sensing devices are strain gauges.

3. The vehicle seat assembly according to claim 1 , wherein the plurality of weight sensing devices includes a first pair of the weight sensing devices supporting one of the pair of mounting plates and a second pair of the weight sensing devices supporting the other of the pair of mounting plates.

4. The vehicle seat assembly according to claim 1 , wherein the mounting plates are generally planar and vertically oriented.

5. The vehicle seat assembly according to claim 1 , wherein the track assemblies are located between the mounting brackets and the weight sensing devices.

6. The vehicle seat assembly according to claim 5 , wherein the mounting plates are laterally spaced apart and located laterally outward of the track assemblies.

7. The vehicle seat assembly according to claim 1 , wherein the weight sensing devices provide signals indicating occupancy of the seat.

8. The vehicle seat assembly according to claim 1 , wherein the vertical lift assembly includes a pair of torque tubes extending between the mounting plates.

9. The vehicle seat assembly according to claim 8 , wherein the torque tubes extend into openings in the mounting plates and are rotatably supported by the mounting plates.

10. A vehicle seat assembly comprising, in combination:

a seat;

seat mounting brackets for securing the seat to a vehicle structure to prevent relative movement therebetween;

a pair of laterally spaced apart track assemblies secured to the seat mounting brackets to selectively move the seat in a horizontal direction relative to the seat mounting brackets and the vehicle structure;

wherein each of the track assemblies includes a first track secured to the seat mounting brackets to prevent relative movement therebetween and a second track member operably connected to the first track member to selectively move the second track member relative to the first track member in the horizontal direction;

a plurality of weight sensing devices connected to the second track members for movement in the horizontal direction with the second track members relative to the first track members and the seat mounting brackets;

a pair of mounting plates supported by the weight sensing devices and movable with the weight sensing devices and the second tracks in the horizontal direction relative to the first track members and the seat mounting brackets;

wherein the plurality of weight sensing devices includes a first pair of the weight sensing devices supporting one of the pair of mounting plates and a second pair of the weight sensing devices supporting the other of the pair of mounting plates;

a seat belt secured to a seat belt attachment of at least one of the mounting plates;

a vertical lift assembly operably connecting the mounting plates and the seat to selectively move the seat in a vertical direction relative to the mounting plates;

wherein the vertical lift assembly is supported by the mounting plates and the vertical lift assembly and the seat are movable with the mounting plates, the weight sensing devices, and the second tracks in the horizontal direction relative to the first track members and the seat mounting brackets; and

wherein loads of the seat belt are transmitted from the seat belt attachment to the vehicle structure through the mounting plates, the weight sensing devices, the track assemblies, and the seat mounting brackets without being transmitted through the vertical lift assembly.

11. The vehicle seat assembly according to claim 10 , wherein the weight sensing devices are strain gauges.

12. The vehicle seat assembly according to claim 10 , wherein the mounting plates are generally planar and vertically oriented.

13. The vehicle seat assembly according to claim 10 , wherein the mounting plates are laterally spaced apart and located laterally outward of the track assemblies.

14. The vehicle seat assembly according to claim 10 , wherein the weight sensing devices provide signals indicating occupancy of the seat.

15. The vehicle seat assembly according to claim 10 , wherein the vertical lift assembly includes a pair of torque tubes extending between the mounting plates.

16. The vehicle seat assembly according to claim 15 , wherein the torque tubes extend into openings in the mounting plates and are rotatably supported by the mounting plates.

17. A vehicle seat assembly comprising, in combination:

a seat;

seat mounting brackets for securing the seat to a vehicle structure to prevent relative movement therebetween;

a pair of laterally spaced apart track assemblies secured to the seat mounting brackets to selectively move the seat in a horizontal direction relative to the seat mounting brackets and the vehicle structure;

wherein each of the track assemblies includes a first track secured to the seat mounting brackets to prevent relative movement therebetween and a second track member operably connected to the first track member to selectively move the second track member relative to the first track member in the horizontal direction;

a plurality of weight sensing devices connected to the second track members for movement in the horizontal direction with the second track members relative to the first track members and the seat mounting brackets;

a pair of mounting plates supported by the weight sensing devices and movable with the weight sensing devices and the second tracks in the horizontal direction relative to the first track members and the seat mounting brackets;

wherein the plurality of weight sensing devices includes a first pair of the weight sensing devices supporting one of the pair of mounting plates and a second pair of the weight sensing devices supporting the other of the pair of mounting plates;

wherein the weight sensing devices provide signals indicating occupancy of the seat;

a seat belt is secured to a seat belt attachment of at least one of the mounting plates;

a vertical lift assembly operably connecting the mounting plates and the seat to selectively move the seat in a vertical direction relative to the mounting plates;

wherein the vertical lift assembly includes a pair of torque tubes extending between the mounting plates and into openings in the mounting plates so that the torque tubes are rotatably supported by the mounting plates;

wherein the vertical lift assembly is supported by the mounting plates and the vertical lift assembly and the seat are movable with the mounting plates, the weight sensing devices, and the second tracks in the horizontal direction relative to the first track members and the seat mounting brackets;

wherein loads of the seat belt are transmitted from the seat belt attachment to the vehicle structure through the mounting plates, the weight sensing devices, the track assemblies, and the seat mounting brackets without being transmitted through the vertical lift assembly.

18. The vehicle seat assembly according to claim 17 , wherein the weight sensing devices are strain gauges.