The present disclosure relates to a vehicle seat assembly. The vehicle seat assembly (1) includes a chassis and a backrest support (5). The backrest support (5) has a first torsion tube (11) for adjusting a recline angle; and the chassis has a second torsion tube (18) for adjusting height rise. The first and second torsion tubes (11, 18) are arranged concentrically about a pivot axis (A). The first and second torsion tubes are rotatable independently of each other about said pivot axis. The first torsion tube is rotatable to adjust the recline angle; and the second torsion tube is rotatable to adjust the rise height. The present disclosure also relates to a vehicle incorporating a vehicle seat assembly.

The present disclosure relates to a vehicle seat assembly (1). The vehicle seat assembly includes a chassis (7) and a pivotally mounted backrest support (5). A recline control mechanism (26) having a pinion gear (28) and a drive rack (29,129) is provided to control the recline angle of the backrest support. The recline control mechanism having reaction means for maintaining engagement of the drive rack with the pinion gear. The recline control mechanism includes a deformable link (30) connected to the drive rack for controlling the transmittal of a force from the backrest support to the chassis. The present disclosure also relates to a vehicle incorporating a vehicle seat assembly.

A joint fitting for a motor vehicle seat may have a first fitting part with a first sprocket and a second fitting part with a second sprocket. The fitting may also have a gear which rolls in the first sprocket and in the second sprocket to generate a rotational movement between the two sprockets. The fitting may also have an eccentric which is arranged between the first fitting part and the gear for driving a rolling movement of the gear in the first sprocket. The eccentric may have two wedge segments and a spring which pushes the wedge segments apart. An additional eccentric is arranged between the second fitting part and the gear for removing a play between the gear and the second sprocket. The additional eccentric may have two wedge segments. A vehicle seat having at least one such gearing fitting is also provided.

A seat drive device, wherein one of first and second operation restricting portions corresponding to one of first and second transmission members is movable within one of first and second notches corresponding to another of the first and second transmission members when the one of the first and second transmission members is rotated from an initial state where both of the first and second transmission members are not rotated, and the first and second operation restricting portions are arranged to interfere with each other when both of the first and second transmission members are simultaneously rotated.

Embodiments include a vehicle comprising a seat, a first sensor coupled to the seat for detecting a seat angle, and a processor communicatively coupled to the first sensor and the seat, and configured to output a control signal for correcting the seat angle if the seat angle is not within a predetermined range of values. Embodiments also include a method of correcting a position of a vehicle seat having an occupant seated therein. The method comprises receiving, at a processor, an output detected by a sensor unit coupled to the seat; comparing, using the processor, the output to a predetermined threshold to determine whether an alarm condition exists; if it does, outputting a control signal for correcting the seat position, wherein the sensor unit includes an angular position sensor.

A vehicle seat assembly for a vehicle includes a bulkhead mountable to a vehicle body structure at a first location. The seat assembly also includes a seat bottom having a seat pan mountable to the vehicle body structure at a second location that is different than the first location. A seat back of the seat assembly includes a frame. A lower end of the frame is pivotably attached to the bulkhead at a pivot point so that the seat back is pivotable relative to the bulkhead and is supported above the seat bottom by the bulkhead when the vehicle seat assembly is mounted to the vehicle body. A recline mechanism has a driving arrangement mounted to one of the bulkhead and the frame and a driven arrangement mounted to the other of the bulkhead and the frame. The recline mechanism is operable to pivot the seat back relative to the bulkhead.

A deceleration device for a vehicle seat comprises an external gear comprising teeth with tops projecting radially outward. A tooth of the external gear comprises a straight portion and a critical cross-section located in a dedendum flank of the tooth of the external gear. The straight portion is provided in a vicinity of the critical cross-section and a thickness of the straight portion becomes linearly larger toward a root of the tooth.

A foldable car seat includes a base frame having a driver securely mounted thereon, a sliding frame operably connected to the driver and slidably attached to the base frame and having an adapter securely attached to a free end of the sliding frame so that the base frame is able to move relative to the sliding and a back frame foldably connected to the base frame and consisting of a pair of lower support frames foldably connected to free ends of the base frame through a first folding device and a pair of upper support frames foldably connected to free ends of the pair of lower support frames through a second folding device. The pair of lower support frames is foldable relative to the base frame and the pair of upper support frames is foldable relative to the pair of lower support frames. A locking mechanism is provided to the sliding frame to limit movement extent of as well as to position location of the sliding frame relative to the base frame.

A vehicle seat recliner for reclining a seat back with respect to a seat base, includes an internal gear member, an external gear member, a drive member, a lock member, a biasing member, and a cover. The drive member causes relative rotation between the internal gear member and the external gear member. The lock member and the biasing member operate for selectively locking and unlocking relative rotation between the internal gear member and the external gear member. The cover covers an outside of the external gear member. The outside of the external gear member includes fitting projections, wherein the fitting projections project toward the cover, and are arranged concentrically. Each of the fitting projections includes a radial inside fixed to the cover by press-fitting and recess-projection fitting, and includes a radial outside configured to be fitted to a mounting hole of the second frame.

A foldable car seat includes a base frame having a driver securely mounted thereon, a sliding frame operably connected to the driver and slidably attached to the base frame and having an adapter securely attached to a free end of the sliding frame so that the base frame is able to move relative to the sliding and a back frame foldably connected to the base frame and consisting of a pair of lower support frames foldably connected to free ends of the base frame through a first folding device and a pair of upper support frames foldably connected to free ends of the pair of lower support frames through a second folding device. The pair of lower support frames is foldable relative to the base frame and the pair of upper support frames is foldable relative to the pair of lower support frames. A locking mechanism is provided to the sliding frame to limit movement extent of as well as to position location of the sliding frame relative to the base frame.