The disclosure relates to a steer-by-wire system for a motor vehicle including a steering rod, an electric servo unit configured to move the steering rod, and a sliding bearing which radially supports the steering rod in a housing. The housing, the sliding bearing, and the steering rod have complementary geometries whereby the steering rod is prevented from rotating. The sliding bearing includes multiple segments in the circumferential direction, at least one segment of the multiple segments is a sliding bearing location for the radial support. At least one segment of the multiple segments is a first supporting element configured to prevent rotation in one direction of rotation. At least one segment of the multiple segments is a second supporting element configured to prevent rotation in the opposite direction of rotation.

An electric actuator includes: a drive part (2); a motion conversion mechanism part (3) configured to convert a rotary motion from the drive part (2) to a linear motion in an axial direction parallel with an output shaft (10a) of the drive part (2); a driving force transmission part (4) including a transmission gear mechanism (28) configured to transmit a driving force from the drive part (2) to the motion conversion mechanism part (3); and a motion-conversion-mechanism support part (5) including a double-row bearing (40) configured to support the motion conversion mechanism part (3), wherein the double-row bearing (40) is arranged on one side in the axial direction with respect to the transmission gear mechanism (28).

A joint assembly for a steering tie rod assembly includes a tie rod. The joint assembly also includes a yoke including a first leg and a second leg, wherein each of the first and second legs define a respective hole aligned with each other. The joint assembly further includes a first pin extending through each of the respective holes defined by the first leg and the second leg of the yoke and through a first hole of the tie rod. The joint assembly yet further includes a second pin disposed in a second hole defined by the tie rod and defining a central hole that the first pin extends through.

A turning apparatus includes tie rods, a wheel turning shaft, two motors, two ball screws, a transmission mechanism, and two controllers. The wheel turning shaft turns steered wheels of a vehicle. A first controller that is any one of the two controllers computes a current command value and allocates the current command value to the motors at a ratio that varies with a position of the wheel turning shaft in an axial direction. The two controllers each supply any one of the motors, which is an object to be controlled by a corresponding one of the controllers, with a current according to a corresponding of individual current command values.

A spring steel-made clip (22) has an arc-shaped first inserting part forcing portion (66) and an arc-shaped second inserting part forcing portion (67) facing the first inserting part forcing portion (66), a first axial direction connecting portion (68) connecting one ends of the inserting part forcing portions (66, 67) and a second axial direction connecting portion (69) connecting the other ends of the inserting part forcing portions (66, 67). The axial direction connecting portions (68, 69) have connecting end position stoppers (75, 76) protruding from their inner edge portions (68a, 69a) toward an opening (65). The connecting end position stoppers (75, 76) elastically contact position stopper contact portions (44e, 57e) of tubes (20A, 20B), then a relative movement of the tubes (20A, 20B) in a direction in which connecting end contact surfaces (47, 60) separate from each other is stopped.

Rotary assist apparatus for recirculating ball steering gears are disclosed. An example motor vehicle steering system includes an input shaft to couple to a steering shaft of a motor vehicle, a worm gear, a first end of the worm gear coupled to the input shaft, a second end of the worm gear fixed to a helical spur gear, a ball nut surrounding a portion of the worm gear, the ball nut including ball bearings and ball guides, an intermediate gear fixed to a first pinion, the first pinion engaged with the helical spur gear, a motor fixed to a second pinion, the second pinion engaged with the intermediate gear, the motor to rotate the worm gear to translate the ball nut, and a sector gear engaged with the ball nut, the sector gear to rotate as the ball nut translates.

A holding ring for the axial fixing of a rotary bearing of a steering apparatus for motor vehicles on a rotatable component with a cylindrical outer surface onto which an inner bearing shell of the rotary bearing is mounted, wherein the holding ring includes at least one spring tongue which lies in an axial direction resiliently against the inner bearing shell, is improved with regard to a simple design and assembly process in that the holding ring comprises radially inwardly projecting elastic fixing tongues which, in the relaxed state, extend into the radial region of the rotatable component such that, when the holding ring is pushed onto the cylindrical outer surface of the rotatable component, the fixing tongues are deflected elastically in an axial direction opposite to the pushing-on direction and lie with a radial preload force against the outer surface of the rotatable component.

The present discrete relate to an automobile steering apparatus and, more specifically, to an automobile steering apparatus that is capable of preventing or reducing the consumption of engine power and reducing the number of components, and further capable of enhancing convenience for drivers by using functions for controlling the automobile, such as automatic parking, lane keeping, driving assistance according to road conditions, steering vibration attenuation, autonomous driving control, and the like, and in turn, is advantageous to the strength of worm wheels by causing pressure applied thereto to be distributed and provides drivers with enhanced steering feel.

A method of manufacturing a rack bar includes: a rolling die abutment step of bringing a pair of rolling dies into abutment against an intermediate portion of a workpiece; and a ball screw groove forming step of forming a ball screw groove in the workpiece by moving the workpiece relative to the pair of rolling dies so that a region of the workpiece against which the pair of rolling dies is brought into abutment is moved from the intermediate portion toward a first end portion of the workpiece.

A ball screw nut has a pair of through holes and a first passage that allows the through holes to communicate with each other and that opens radially outward. In each of the through holes, a ball screw mechanism has a circulation member having a second passage in which a ball can move between a ball raceway and the first passage. The ball screw mechanism has a circulation path for communicating the two connection points set on the ball raceway by the first passage and each of the second passages. A driven pulley has a thin portion that defines a radial clearance between an inner periphery of the driven pulley and an outer periphery of the ball screw nut. The ball screw mechanism has a pressing lid that presses down each of the circulation members from the outer periphery of the ball screw nut and that covers the first passage.