An adjustment device (1) for a chassis of a motor vehicle. The adjustment device has an actuator (2) with a housing (5) and a spindle drive, which has an axially displaceable spindle (10), with a fixed mounting (7) on the vehicle side and a connecting element (4) on the chassis side. The spindle (10) is extended in a direction of its longitudinal axis by an extension piece (11), and the connecting element (4) is attached to the outer end (11b) of the extension piece (11).

An electrically operated steering system (1) is provided for a vehicle (2) with a rack (3) for attaching the steering system (1) to a frame of the vehicle (2), two steerable wheels (4) that are pivotably attached to the rack (3), a rod element (5) arranged on the rack (3), which is slidable in its longitudinal direction in relation to the rack (3), a kinematic unit (13), which is coupled to the rod element (5) and which transforms a movement of the rod element (5) into a steering rotation of the wheels (4), an electric machine (6), which is mechanically connected to the rod element (5) for effecting the movement of the rod element (5), and a lateral force absorbing mechanism (7), which is configured for absorbing a lateral force produced by the kinematic unit (13) in relation to the rod element (5).

A steer-by-wire apparatus may include: a first rotating part rotated with a steering wheel; a second rotating part installed so as to be isolated from the first rotating part, and engaged with a first rack gear provided on a side surface of a gear bar; a sensor installed on each of the first and second rotating parts, and configured to measure at least any one of a rotation angle of the first rotating part, a rotation angle of the second rotating part and a torque value of the first rotating part; a controller configured to receive the measured value of the sensor; and a clutch configured to operate according to a control signal of the controller and synchronize rotations of the first and second rotating parts.

A steer-by-wire type power steering apparatus according to embodiments disclosed herein includes a cylinder provided inside a housing and including a first spline on an inner circumferential surface thereof, and a sliding bar inserted into the cylinder and including a second spline engaged with the first spline and a screw connected to a motor, so that friction and noise can be reduced when a sliding bar connected to a tie rod so as to steer a wheel is slid, the durability and strength of the sliding bar can be improved, and the position of the sliding bar can be determined based on a phase difference between the rotation information items of respective motors.

A steer-by-wire system for a vehicle includes a rack moveable in an axial direction and defining a groove extending in the axial direction of the rack. The steer-by-wire system also includes a housing surrounding at least a portion of the rack. The steer-by-wire system further includes an anti-rotation device disposed proximate an outer surface of the rack at the mounting location of the rack and within the housing. The anti-rotation device includes a plurality of balls disposed in the groove defined by the rack. The anti-rotation device also includes a running plate having a radially inner surface disposed radially outward of the rack, wherein the plurality of balls are disposed between the plate and the rack.

A steer-by-wire steering system for a vehicle includes a rack moveable in an axial direction. The steer-by-wire steering system also includes an anti-rotation mechanism disposed proximate an outer surface of the rack at the mounting location of the rack. The anti-rotation mechanism includes a yoke having a bearing journal extending therefrom. The anti-rotation mechanism also includes a bearing disposed on the bearing journal of the yoke. The anti-rotation mechanism further includes a running plate structure disposed within a rack housing and extending in a longitudinal direction of the rack, wherein the bearing and the yoke are positioned to move along a surface of the running plate structure during movement of the rack in the axial direction.

A steer-by-wire type power steering apparatus according to embodiments disclosed herein includes a cylinder provided inside a housing and including a first spline on an inner circumferential surface thereof, and a sliding bar inserted into the cylinder and including a second spline engaged with the first spline and a screw connected to a motor, so that friction and noise can be reduced when a sliding bar connected to a tie rod so as to steer a wheel is slid, the durability and strength of the sliding bar can be improved, and the position of the sliding bar can be determined based on a phase difference between the rotation information items of respective motors.

An electric power steering apparatus is provided, including a casing; a steering shaft, disposed in the casing in an axially reciprocal manner and extending from two ends of the casing, and the body thereof having a rack portion and a screw portion; a planetary roller nut, assembled in the casing and screwed to the screw portion; a motor, controlled by the ECU, disposed in the casing, and having an external rotor, and the external rotor being coupled to the planetary roller nut to drive the motor to rotate, further driving the steering shaft to reciprocate in the casing; a first waterproof ring, provided between the planetary roller nut and the casing, and a second waterproof ring, placed between the planetary roller nut and the hollow stator of the motor, thus forming an airtight and waterproof efficacy for the motor to prevent the motor from losing power.

A utility vehicle steering system includes a steering gear for transmitting a manual torque from a steering wheel to a steering drop arm. An electric motor provides an auxiliary torque for the steering boost, which is provided exclusively electrically over the entire operating range of the steering system. An input shaft and an output shaft have axes of rotation that are skewed with respect to each other. A first gear device couples the input shaft to the output shaft. A second gear device has the electric motor connected to the input side and has at least one speed-reduction gear stage in the form of a coaxial gear with a high transmission ratio. The output side of the second gear device is coupled to the output shaft and its speed reduction gear stage, a coaxial gear with a high transmission ratio, is coaxial with the output shaft.

A toothed belt pulley for a toothed belt drive of a motor vehicle steering system, having a gear ring which has an externally encircling toothing and is attached to a hub body. The gear ring is formed as a plastically formed metallic formed part and the hub body comprises a plastics-material part.