Multi-load floor smartfold hybrid
View Patent ↗A seat support system for supporting a seat in a manner that ameliorates or eliminates load applied to a driving mechanism. The system may be configured to support a seat back when the seat back in pivoted upwardly and downwardly relative to a seat bottom. The support system may create a load-bearing link between a non-driven component on the seat back and an anchor.
1. A seat back support system comprising:
a support bracket configured to be fixed to a seat back support, the seat back support being rotatable about an axis to a desired seat back angle, the support bracket including a recess;
a pawl configured to pivotably engage and disengage the recess in the support bracket, wherein the pawl engages the recess when the support bracket is in a folded-forward seat back angle to create a load-bearing linkage between the support bracket and a pawl pivot; and
a shutter positioned between the pawl and recess to pivotally cover and uncover at least a portion of the recess, the shutter covering the recess to prevent the pawl from pivoting into engagement with the recess until the seat back, when started from a design seat back angle, is folded forwardly past the folded-forward seat back angle.
2. The arrangement of claim 1 wherein the support bracket cannot again be folded past the folded-forward position, after the pawl engages the recess, until the support bracket is folded upwardly past an unlocking position.
3. The arrangement of claim 2 wherein the unlocking position corresponds with a partially folded position of the support bracket that is downward relative to the design position.
4. The arrangement of claim 1 wherein the pawl includes a head and a pin, the head being a portion of the pawl positioned forwardly and inwardly of the pin, the head engaging the forward end of the recess when the pawl pivots into the recess.
5. The arrangement of claim 4 wherein the pin engages an underside of the shutter when the shutter prevents the pawl from pivoting upwardly into the recess and wherein the pin engages a side of the shutter above the underside of the shutter after the pawl pivots upwardly into the recess.
6. The arrangement of claim 4 wherein a pin on the support bracket moves the shutter rearwardly once the seat back is folded past the folded-forward position.
7. The arrangement of claim 6 wherein the pin on the support bracket engages the side of the shutter and the head engages a portion of the seat back in front of the recess only after the tab moves the shutter rearwardly.
8. The system of claim 1 wherein the support bracket and shutter pivot about a first axis and the pawl pivots about a second axis.
9. The system of claim 1 further comprising at least one tooth-shaped gear that operates independently of the recess to support the seat back in position, the load-bearing linkage ameliorating loading on the at least one tooth-shaped gear when the pawl engages the recess.
10. A seating system comprising:
an electrically driven motor that controllably folds a seat back upwardly and downwardly about a rearward portion of a seat bottom;
a pawl configured to engage and disengage a recess in the seat back, wherein the pawl engages a forward end of the recess when the seat back is in a folded-forward position to create a load-bearing linkage between the seat back and a pawl pivot;
a shutter covering an entrance to the recess to prevent the pawl from pivoting into the recess until the seat back, when started from a design position, is folded forwardly past the folded-forward position; and
a controller configured to control folding of the seat back performed by the motor, wherein the controller controls the motor to engage the pawl with the forward end of the recess in a manner that eliminates torque on the motor caused by force being applied to a top side of the seat back when the seat back is in the folded-forward position.
11. The system of claim 10 wherein the electrically driven motor cooperates with a first tooth-shaped gear and a second tooth-shaped gear to support the seat back in position, the load-bearing linkage ameliorating loading on the first and second tooth-shaped gears when the pawl engages the forward end of the recess.
12. The system of claim 10 wherein the pawl blocks any further forward rotation of the seat back when engaged within the recess until the seat back pivots rearwardly a predefined amount.