The invention relates to a vehicle seat comprising a seat part and a backrest, wherein the backrest comprises at least one left-hand backrest longitudinal support at least one middle backrest longitudinal support and at least one right-hand backrest longitudinal support extending in the vertical direction of the backrest. The backrest longitudinal supports are each connected to the seat part and/or a seat-part frame in a lower region and comprise at least one cushion element. The backrest longitudinal supports are hingedly connected to the seat part and/or the seat-part frame and are interconnected by means of an elongate backrest cross strut, wherein it is possible to vary a distance between at least two backrest longitudinal supports by displacing the at least one backrest cross strut along the vertical direction of the backrest in the upper region of the backrest.

The invention relates to a vehicle seat comprising a seat part and a backrest, wherein the backrest comprises at least one left-hand backrest longitudinal support at least one middle backrest longitudinal support and at least one right-hand backrest longitudinal support extending in the vertical direction of the backrest. The backrest longitudinal supports are each connected to the seat part and/or a seat-part frame in a lower region and comprise at least one cushion element. The backrest longitudinal supports are hingedly connected to the seat part and/or the seat-part frame and are interconnected by means of an elongate backrest cross strut, wherein it is possible to vary a distance between at least two backrest longitudinal supports by displacing the at least one backrest cross strut along the vertical direction of the backrest in the upper region of the backrest.

A seat assembly is provided and may include a base assembly, a first arm, a seat bottom assembly, a second arm, and an adjustment arm. The base assembly may be mounted to a vehicle. The first arm may be rotatably coupled to the base assembly and may be operable to rotate relative to the base assembly about a first axis of rotation. The seat bottom assembly may be rotatably coupled to the first arm and may be operable to rotate relative to the first arm about a second axis of rotation. The second arm may be rotatably coupled to the seat bottom assembly and may be operable to rotate relative to the seat bottom assembly about a third axis of rotation. The adjustment arm may include an adjustment mechanism, and may be rotatably coupled to the second arm and rotatably coupled to the base assembly. The adjustment mechanism may be operable to rotate the adjustment arm relative to the base assembly about a fourth axis of rotation.

A seat assembly is provided and may include a base assembly, a first arm, a seat bottom assembly, a second arm, and an adjustment arm. The base assembly may be mounted to a vehicle. The first arm may be rotatably coupled to the base assembly and may be operable to rotate relative to the base assembly about a first axis of rotation. The seat bottom assembly may be rotatably coupled to the first arm and may be operable to rotate relative to the first arm about a second axis of rotation. The second arm may be rotatably coupled to the seat bottom assembly and may be operable to rotate relative to the seat bottom assembly about a third axis of rotation. The adjustment arm may include an adjustment mechanism, and may be rotatably coupled to the second arm and rotatably coupled to the base assembly. The adjustment mechanism may be operable to rotate the adjustment arm relative to the base assembly about a fourth axis of rotation.

In a seat reclining device, a seatback frame forming a skeleton of a seatback is coupled to a seat cushion frame to be rotatable about a shaft with respect to the seat cushion frame. One end portion of a first sliding bracket is rotatably coupled to a middle portion of the seatback frame by a driving unit. The other end portion of the first sliding bracket extends toward a vehicle body located behind the seatback. A second sliding bracket is mounted on the vehicle body located behind the seatback and extends toward the first sliding bracket in a front and rear longitudinal direction to be connected to the first sliding bracket. The second sliding bracket is configured to guide a sliding movement of the first sliding bracket while the first sliding bracket is being rotated.

A vehicle seat control apparatus is equipped in a vehicle capable of travelling by automated driving and is configured to set a position and attitude of a seat of the vehicle to a driving position in low automated driving and to set the position and attitude of the seat to a relaxing position in high automated driving. The vehicle seat control apparatus includes an alertness detecting device configured to detect an alertness level of a driver seated on the seat, a computation control device configured to drive the seat driving device to perform an alerting operation if the alertness level is lower than a predetermined level when driving of the vehicle transitions from the high automated driving to the low automated driving, and a seat driving device configured to displace the seat at a higher speed than at a transition from the driving position to the relaxing position.

The present disclosure relates to a reclining device for a seat, which can adjust a seatback at various angles through movement of a striker installed in a vehicle body. The reclining device for a seat includes a latch installed on a side of a seatback and configured to be rotated together with the seatback, and a striker module in which the latch is engaged with a striker installed in a vehicle body, where the striker moves in a certain section overlapping a rotation trajectory of the latch in a state where the latch is engaged and reclines the seatback together with the latch.

A drive system (2) tilt adjusts a back rest (10) of a vehicle seat (1). The back rest (10) is held on a seat base (11) by a fitting (12). An output pinion (24), drivable by a drive motor (20), is provided on the seat back side and interacts with a tooth segment (18) arranged rotationally fixed on the base (11). A pivot movement of the back rest (10) can be carried out by the drive motor (20) while the fitting (12) is unlocked. The output pinion (24) can be uncoupled from the drive motor (20) by a coupling (22). A compensation spring (14) acting between the back rest (10) and the base (11) pre-tensions the back rest (10) in the direction of the non-use position. A vehicle seat (1) with the drive system and a method for operating a drive system (2) are also provided.

The present invention relates to a vehicle seat control apparatus and a control method thereof. The present invention is based on a structure in which a hall sensor is applied to a seat motor for providing an operation power of a power seat, and a seat caught situation is judged through a sensing operation of the hall sensor and a maximum current is supplied to the seat motor in the present invention. Therefore, the present invention has an advantage of solving the seat caught situation by improving the operation mode of the seat control apparatus to which the soft start mode is applied.

Disclosed herein is a recliner for a vehicle seat, wherein a plurality of second latching protrusions (51a) is formed on a socket (50) and a plurality of first latching protrusions (41b and 42b), which is latched to the second latching protrusions (51a) when the socket rotates, is formed on two wedges (41 and 42). When the recliner is operated, a loss angle is reduced by simultaneous rotation of the wedges (41 and 42) so that the responsiveness of the recliner is improved.