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 vehicle seat comprising a seatback mounted pivoting by an articulation mechanism selectively lockable and unlockable, relative to a seatback footing selectively lockable and unlockable on a base, where the seat further comprises a seat cushion, first and second rear connecting rods connecting the seatback to the base, an actuating device being configured, by rotation of the first rear connecting rod, for driving the seatback into a folded down position when the articulation mechanism is unlocked and the seatback footing is locked on the base, and for driving the seat in a forward tilted position when the seatback footing is unlocked and the articulation mechanism is locked.

Disclosed herein is a vehicle seat recliner. A center boss of an external gear includes a first end and a second end having a larger diameter than the first end. Since the load of the center boss is easily distributed, it is possible to secure smooth operation performance by preventing the deformation of the center boss even though a strong external force is applied to the recliner. Since there is no need to perform heat treatment on the center boss for securing the strength thereof, manufacturing costs are reduced.

A vehicle seating assembly includes a seatback movable between an upright position and a reclined position relative to a seat base. A track assembly includes a bracket slidably received by a rail. The bracket is operably coupled with at least one of the seatback and the seat base. A rear support assembly is positioned to extend at least partially along the seatback and includes a base operably coupled with the seatback. First and second struts extend downward from the base, and one of the first and second struts is pivotally coupled with a back end of the bracket. An actuator assembly is operably coupled with the base and is configured to move the seatback between the upright position and the reclined position.

An actuation system for a vehicle seat includes a housing and a gear system located in the housing having one or more gears coupled together. The gears of the actuation system have a low actuation efficiency such that the gears move in response to a first input. The actuation system further includes an efficiency switch that may be activated so that the actuation system has a higher actuation efficiency.

Provided is a seatback rotating device used for a vehicle seat. The seatback rotating device includes an electric motor, an action mechanism, a rotor, and an abutment target portion. In the seatback rotating device, when s seatback of the vehicle sat is placed in a first standing position, the rotor is positioned in a standby state that creates a gap between a first protrusion and the abutment target portion and a gap between a second protrusion and the abutment target portion, the first protrusion and the second protrusion being provided to the rotor. In the standby state, a gap length from the first protrusion to the abutment target portion is small relative to a gap length from the second protrusion to the abutment target portion.

A vehicle seating assembly has a seat, a seatback and a bracket extending between the seat and the seatback with a first pivotable coupling between the bracket and the seat, a second pivotable coupling between the bracket and the seatback, and a sector gear portion with a gear assembly including a spur gear. The sector gear portion is disposed along an edge of the bracket, wherein the spur gear is rotatable to engage the sector gear portion of the bracket to move the bracket from a first position to a second position to move the second pivotable coupling from a primary position to a secondary position.

A vehicle seating assembly includes a seat including a side bracket, a seatback, a displaceable bracket extending between the seatback and the side bracket, a pivotable seatback coupling between the displaceable bracket and the seatback, and a movement assembly operably coupling the displaceable bracket to the side bracket. The movement assembly is positionable between a design position and a fully deployed position to move the displaceable bracket between a first position and a second position, respectively, and to move the pivotable seatback coupling between a primary positon and a secondary position, respectively, wherein, when the pivotable seatback coupling is in a secondary position, the seatback is movable between a forward inclined position and a substantially flat position.

Provided is a seatback rotating device. The seatback rotating device includes an electric motor and an application mechanism. The electric motor generates a rotational force that is used to rotationally displace a seatback of a vehicle seat. The application mechanism enables application of the rotational force to the seatback. The application mechanism has a configuration that enables the seatback to be self-rotatable with gravity applied to the seatback in response to the rotational force being applied to the seatback.

The invention relates to a motor vehicle seat (1) having a seat cushion frame (3) which has seat cushion frame side members (5) and is supported by a four-element linkage with front and rear coupling linkages (9) at a height H relative to a floor, and with a backrest frame (4) which has backrest frame side members (6). A change in the height H of the seat cushion frame (3) is possible via a seat height adjustment device. By means of a backrest inclination adjustment device (17), a change in the inclination of the backrest frame (4) can be effected. A connecting tube (25) connects the two seat cushion frame side members (5) to one another. The connecting tube (25) is also connected to the rear coupling linkages (9). The adjustment axis runs through the cross-section of the connecting tube (25).