A vehicle has an automatically tiltable seat, a plurality of seat actuators fully supporting the automatically-tiltable seat to enable the automatically tiltable seat to pitch or roll to compensate for motion of the vehicle, and a processor to predict the motion of the vehicle and to control the plurality of seat actuators. The plurality of seat actuators automatically adjust the pitch or roll of the automatically tiltable seat in response to the motion of the vehicle. The seat actuators also provide shock absorption.

A vehicle has an automatically tiltable seat, a plurality of seat actuators fully supporting the automatically-tiltable seat to enable the automatically tiltable seat to pitch or roll to compensate for motion of the vehicle, and a processor to predict the motion of the vehicle and to control the plurality of seat actuators. The plurality of seat actuators automatically adjust the pitch or roll of the automatically tiltable seat in response to the motion of the vehicle. The seat actuators also provide shock absorption.

A drive bush configured to circumferentially rotate and drive a pair of wedge members in an eccentric space includes a cylindrical portion rotatably supported inside a boss portion of an internal tooth constituting member, a flange portion integrally formed at a first end portion in the axial direction of the cylindrical portion so as to face one side surface side of the wedge members, and a pushing portion integrally provided on the outer peripheral side of the flange portion, and configured to release a wedge effect by circumferentially pushing the wedge members. The inner surface of the cylindrical portion is integrally formed with a wall portion, and the wall portion is formed with, in the middle thereof, a female spline teeth meshing with the output shaft of a motor. The cylindrical portion, the wall portion including the female spline teeth and the flange portion have substantially the same thickness.

A ventilated seat system for a vehicle includes a seating assembly including a seatback operably coupled to a seat base. A blower is coupled to the seating assembly. The blower generates a sound transmission when activated. The blower includes a housing defining an inlet and an outlet. A first metamaterial silencer is coupled to an interior surface of the housing proximate to the inlet, and a second metamaterial silencer is coupled to the interior surface of the housing proximate to the outlet. Each of the first metamaterial silencer and the second metamaterial silencer reduces the sound transmission generated by the blower.

Disclosed herein is a walk-in device for a seat. The walk-in device includes: a rotor configured to operate in conjunction with a recliner during a walk-in operation; a puller configured to operate in conjunction with the rotor during the walk-in operation, and to operate only in conjunction with the recliner without operating in conjunction with the rotor during a folding operation; a rotor spring configured to provide an elastic force to the rotor in a return direction; a puller spring configured to provide an elastic force to the puller in a return direction; and a base plate configured to rotatably install the rotor and the puller on a cushion frame of the seat, wherein the rotor and the puller are configured to set up a single rotation point with respect to the base plate via a hinge shaft.

Disclosed herein is a walk-in device for a seat. The walk-in device includes: a rotor configured to operate in conjunction with a recliner during a walk-in operation; a puller configured to operate in conjunction with the rotor during the walk-in operation, and to operate only in conjunction with the recliner without operating in conjunction with the rotor during a folding operation; a rotor spring configured to provide an elastic force to the rotor in a return direction; a puller spring configured to provide an elastic force to the puller in a return direction; and a base plate configured to rotatably install the rotor and the puller on a cushion frame of the seat, wherein the rotor and the puller are configured to set up a single rotation point with respect to the base plate via a hinge shaft.

Disclosed is a vehicle seat adjustment device including a seat-cushion-tilting frame disposed on a moving rail, the moving rail being coupled to a fixed rail so as to be movable forwards and backwards, and connected to a seatback frame, a tilting device hingedly coupled to a base bracket on the moving rail and to a rear end of the seat-cushion-tilting frame to perform forward tilting of the seat-cushion-tilting frame, a locking device connected to the tilting device to lock and unlock the tilting device, and a probe rotatably disposed between the seatback frame and the tilting device, the probe including a stopper capable of being inserted into a locking groove formed in the seatback frame. Rotation of the probe is restricted when the stopper is inserted into the locking groove.

A vehicle seat (20) has a first seat base (21), a first backrest (22), a first hinge assembly (31) defining a first axis of rotation (41), and a second hinge assembly (32) defining a second axis of rotation (42). The first backrest (22) is rotatable via the first hinge assembly (31) and via the second hinge assembly (32) relative to the seat base (22). The second axis of rotation (42) is spaced apart from the first axis of rotation (41). The first backrest (22) extends between a top end (112) and a bottom end (111) in a first spatial situation (P1) provided for driving.

A seatback adjustment assembly may include a recliner heart, an attachment plate, and a lever. The recliner heart is operable in an unlocked state permitting relative rotation between a seatback and a seat bottom and a locked state preventing relative rotation between the seatback and the seat bottom. The attachment plate is rotationally fixed to the recliner heart. The lever is rotatable between a first state in which the lever is engaged with the attachment plate and a second state in which the lever is disengaged from the attachment plate. When lever is in the first state and the recliner heart is in the unlocked state, rotation of the recliner heart causes corresponding rotation of the seatback relative to the seat bottom. However, the seatback is configured to rotate relative to the seat bottom without causing corresponding rotation of the recliner heart when the lever is in the second state.

A seatback adjustment assembly may include a recliner heart, an attachment plate, and a lever. The recliner heart is operable in an unlocked state permitting relative rotation between a seatback and a seat bottom and a locked state preventing relative rotation between the seatback and the seat bottom. The attachment plate is rotationally fixed to the recliner heart. The lever is rotatable between a first state in which the lever is engaged with the attachment plate and a second state in which the lever is disengaged from the attachment plate. When lever is in the first state and the recliner heart is in the unlocked state, rotation of the recliner heart causes corresponding rotation of the seatback relative to the seat bottom. However, the seatback is configured to rotate relative to the seat bottom without causing corresponding rotation of the recliner heart when the lever is in the second state.