An apparatus for changing positions of a seat for vehicles includes mechanisms for adjusting the height of the seat for vehicles, adjusting reclining of the seat for vehicles, changing the seat for vehicles into a knee rest posture and changing the seat for vehicles into a relaxed comfort are integrated into one structure. Accordingly, a user selectively implements adjustment of the height of the seat for vehicles, adjustment of reclining of the seat for vehicles, change into the knee rest posture, and change into the relaxed comfort posture, etc., through operation of the switch.

An aircraft seat includes infinitely adjustable, lateral tilt control within a specified range. The aircraft seat includes a stationary support, a tilting frame rotatably or translatably attached to the stationary base, and a tilt control mechanism to adjust the tilt within the defined range and positively lock the frame without back-driving. The tilt control mechanism may include a plurality of linkages connected to the stationary support and the tilting frame, and to each other via a threaded block; a threaded shaft adjusts the linkages and thereby adjust the tilt. Alternatively, the tilt control mechanism comprises a curved rack and a pinion. The threaded block and threaded shaft, or the rack and pinion define ACME threads to prevent back-driving.

A seat frame is disclosed for a height-adjustable and tiltable seat pan of a motor vehicle seat. The seat frame has two side rails, a first cross bar, a second cross bar, and a drive unit. The first cross bar is supported in the two side rails and the second cross bar serves to support the seat pan. The second cross bar is mounted so as to be rotatable about fixed first axis in the two side rails. The second cross bar is rotated by the drive unit. The drive unit has an actuating motor and an actuator that is displaceable via the actuating motor and connected to the second cross bar outside the first axis. The drive unit is mounted on the first cross bar and rotatable about a second axis of the first cross bar which is fixed in the two side rails.

A seat frame is disclosed for a height-adjustable and tiltable seat pan of a motor vehicle seat. The seat frame has two side rails, a first cross bar, a second cross bar, and a drive unit. The first cross bar is supported in the two side rails and the second cross bar serves to support the seat pan. The second cross bar is mounted so as to be rotatable about fixed first axis in the two side rails. The second cross bar is rotated by the drive unit. The drive unit has an actuating motor and an actuator that is displaceable via the actuating motor and connected to the second cross bar outside the first axis. The drive unit is mounted on the first cross bar and rotatable about a second axis of the first cross bar which is fixed in the two side rails.

A vehicle seating assembly includes a seat base, a split seatback having a seatback frame and pivotally coupled to the seat base, the split seatback having a first seatback and a second seatback, a first pivot mechanism coupled to the seatback frame allowing the split seatback to pivot between an upright position and a folded position, and a motor for moving the split seatback to pivot to the folded position. The assembly also includes a second pivot mechanism comprising a pair of locking pivot mechanisms coupled to the second seatback for releasably holding the second seatback in an upright position, a dump spring operatively coupled to the second seatback to spring bias the second seatback towards the folded position, and a second mechanism comprising a pull mechanism for releasing the second pair of pivot mechanisms to allow the second seatback to move to the folded position.

A vehicle seating assembly includes a seat base, a split seatback having a seatback frame and pivotally coupled to the seat base, the split seatback having a first seatback and a second seatback, a first pivot mechanism coupled to the seatback frame allowing the split seatback to pivot between an upright position and a folded position, and a motor for moving the split seatback to pivot to the folded position. The assembly also includes a second pivot mechanism comprising a pair of locking pivot mechanisms coupled to the second seatback for releasably holding the second seatback in an upright position, a dump spring operatively coupled to the second seatback to spring bias the second seatback towards the folded position, and a second mechanism comprising a pull mechanism for releasing the second pair of pivot mechanisms to allow the second seatback to move to the folded position.

The present disclosure provides a seat control system for a vehicle, which may sense whether passengers have been seated on a front seat and a rear seat, and easily implement sleep and rest postures of the front seat and the rear seat through the height adjustment, the reclining adjustment, and the like of the front seat and the rear seat according to the sensed result.

The present disclosure provides a seat control system for a vehicle, which may sense whether passengers have been seated on a front seat and a rear seat, and easily implement sleep and rest postures of the front seat and the rear seat through the height adjustment, the reclining adjustment, and the like of the front seat and the rear seat according to the sensed result.

The present disclosure relates to an adjustment device for a vehicle seat comprising adjusters adjustable in relation to one another, where on the first adjuster a toothed rack with an interlocking is hinged, and on the second adjuster a pinion is pivoted, the interlocking engaging with the pinion for adjusting the toothed rack and for moving the two adjusters in relation to one another, where, further, a toothed rack blocking element is affixed to the second adjuster, and the toothed rack, when adjusted, runs between the toothed rack blocking element and the pinion.

A motor vehicle and occupant seat combination may include any one or combination of means for selectively preventing forward pivoting of at least one vehicle seat, one or more web attenuators for dampen forces applied thereby by one or more respective shoulder webs of at least one occupant restraint system, at least one sleeve received on at least one shoulder web and a corresponding sleeve adjuster for adjusting a position of the sleeve along the respective shoulder web, and one or more ratcheting web retractors for selectively tightening a lap web or a thigh web about an occupant of at least one vehicle seat.