Seat assembly having compression limiter with wave portion
A seat assembly includes a frame, a seating base layer arranged on the frame and a compression limiter layer arranged on the seating base layer. The compression limiter layer includes a coil portion and a wave portion having a curved profile. The wave portion includes a plurality of wave elements and one or more ribs connected between the wave elements. The seat assembly further includes a load distribution layer connected to the compression limiter layer and an adjustment module movable between a rear position and a forward position. The adjustment module is configured to move the wave portion between a retracted position and an extended position.
1. A seat assembly comprising:
a frame;
a seating base layer arranged on the frame;
a compression limiter layer arranged adjacent to the seating base layer, the compression limiter layer comprising a wave portion forming a knee support and having a curved profile;
a load distribution layer connected to the compression limiter layer; and
an adjustment module movable between a rear position and a forward position and configured to move the wave portion between a retracted position and an extended position,
wherein the wave portion comprises a first plurality of wave elements connected to each other by a first plurality of ribs, a second plurality of wave elements connected to each other by a second plurality of ribs, and a first set of trunnions connecting the wave portion to the load distribution layer.
2. The seat assembly of claim 1 , wherein each of the first plurality of wave elements are alternately positioned with each of the second plurality of wave elements.
3. The seat assembly of claim 2 , wherein the first plurality of wave elements and the second plurality of wave elements are movable relative to one another.
4. The seat assembly of claim 1 , further comprising a retainer layer, wherein the compression limiter layer is disposed between the retainer layer and the load distribution layer.
5. The seat assembly of claim 4 , wherein a second set of trunnions connect the wave portion to the retainer layer.
6. The seat assembly of claim 1 , wherein the adjustment module comprises an actuator and a body and the actuator is configured to move the body to move the adjustment module between the rear position and the forward position.
7. The seat assembly of claim 6 , wherein the wave portion is configured to slide relative to the body to move between the retracted position and the extended position.
8. The seat assembly of claim 7 , wherein the retainer layer slides relative to the body to move between the retracted position and the extended position.
9. The seat assembly of claim 1 , wherein each of the first plurality of wave elements are formed as linear wave springs.
10. The seat assembly of claim 1 , wherein the first plurality of wave elements comprise undulations along their respective lengths.