A coupling e.g. for an actuator, includes a housing which is preferably in the form of a ring mounted around the end of an outer rod of the actuator and which can be mounted to a component e.g. a cowl being deployed. Within the housing of the coupling is provided an eccentric bearing mount and bearing arrangement mounted eccentrically to the housing so as to permit some eccentric movement.

The present invention relates to an actuation device (1) comprising a threaded shaft (2) connected at one end to driving means adapted to allow the threaded shaft (2) to rotate about its longitudinal axis (). The device further comprises a movable element (3) provided with a cylindrical cavity (30) adapted to receive the threaded shaft (2), and configured in such a way that a rotation of the threaded shaft (2) corresponds to a translation the movable element (3) along the longitudinal axis (). The device (1) further comprises two guiding rods (4,4) coupled to the movable element (3) and adapted to constrain the translation of the latter along a direction parallel to the longitudinal axis (). The movable element (3) comprises a first (31) and a second (32) element constrained to each other, wherein the first element (31) is coupled to the threaded shaft (2) and the second element (32) is coupled to the two guiding rods (4,4). A portion (320) protrudes from the second element (32) adapted to fit into a seat (312) formed in the first element (31), and wherein the portion (320) and the seat (312) are shaped in such a way that the contact between the seat (312) and the portion (320) takes place in a contact zone that extends along a section of the portion (320) whose midpoint lies in a plane that comprises the longitudinal axis () and is parallel to the plane which comprises the development axes (,) of the two guiding rods (4,4).

A steering device includes a rolling-element bearing that rotationally supports a rotating member in a housing. The rolling-element bearing includes an inner ring, an outer ring, first rolling elements, and second rolling elements. The first rolling elements and second rolling elements are disposed in parallel in the axial direction between the inner ring and the outer ring. The inner ring includes a first split race having a first inner peripheral track surface and a second split race having a second inner peripheral track surface. The steering device further includes a fixing structure configured to fix the rolling-element bearing to the outer periphery of the rotating member in a state where a load is applied to the first split race, the first rolling element, the outer ring, the second rolling element, and the second split race.

A steering gear for a steer-by-wire steering system of a motor vehicle may include a coupling rod which is supported in a steering gear housing and on which a threaded spindle is formed, with the threaded spindle being surrounded by a spindle nut. The threaded spindle and the spindle nut may be part of a helical gearing, and the coupling rod is movable along a longitudinal axis by way of the helical gearing. The coupling rod is movably mounted in the steering gear housing along the longitudinal axis by way of a pressure piece having two bearing elements arranged on opposite sides of the coupling rod in a circumferential direction of the longitudinal axis.

An electric actuator comprises a housing and an output shaft reciprocatingly received by the housing. There is a screw assembly disposed within the housing and coupled to the output shaft. The screw assembly includes a plurality of annular rollers and a central screw received by the annular rollers. The annular rollers are rotatable about the central screw. There is a motor which includes a stator and a rotor. The rotor has an inner bore which engages the annular rollers. Rotation of the rotor causes the central screw to translate axially relative to the rotor and the output shaft to reciprocate relative to the housing.

A ball screw with a support device includes: a screw; a nut unit movably mounted on the screw; a support device including: a first support seat and a second support seat which are movably mounted on the screw and located at two sides of the nut unit; and a speed control device capable of presetting a speed of the nut unit and the first and second support seats, wherein the speed of the nut unit is V.sub.NT, the speed of the first and second support seats is V.sub.SUP, and they satisfy the relation: 0<V.sub.SUP/V.sub.NT<. When the two ends of the screw are used as a fixing end and a support end, respectively, the ball screw can have an optimized critical rotation speed, which consequently improves the work efficiency of the ball screw.

A ball screw drive includes a lead screw for converting an auxiliary torque produced by an electric motor into an auxiliary translational force acting on a steering rack in a steering system of a motor vehicle. One end of the lead screw and one end of the steering rack are each connected to a track rod via an axial link, and the ball screw drive has a ball nut mounted in a housing with a fixed bearing. In order to withstand strong lateral loads or lateral forces coming from the track rod or rods and acting in the radial direction there is provided between the end of the lead screw connected to the track rod and the ball screw drive a plain bearing element which supports the lead screw radially against the housing. The support is provided by an adjustable radial clearance, and the plain bearing element is a sleeve.

An electric actuator comprises a housing and an output shaft reciprocatingly received by the housing. There is a screw assembly disposed within the housing and coupled to the output shaft. The screw assembly includes a plurality of annular rollers and a central screw received by the annular rollers. The annular rollers are rotatable about the central screw. There is a motor which includes a stator and a rotor. The rotor has an inner bore which engages the annular rollers. Rotation of the rotor causes the central screw to translate axially relative to the rotor and the output shaft to reciprocate relative to the housing.

A ball screw drive includes a lead screw for converting an auxiliary torque produced by an electric motor into an auxiliary translational force which acts on a steering rack in the steering system of a motor vehicle. One end of the lead screw and one end of the steering rack are each connected to a track rod via an axial link, and the ball screw drive has a ball nut mounted in a housing with a fixed bearing. In order to withstand lateral loads or lateral forces coming from the track rod or rods and acting in the radial direction, there is provided between an end of the lead screw connected to the track rod and the ball screw drive a plain bearing element which supports the lead screw radially against the housing.

A linear actuator includes a linear module including a base, a screw rod mounted in the base and a transmission carriage threaded onto the screw rod, and a support module including two support carriages movably mounted on the screw rod at two opposite sides relative to the transmission carriage, a protective cover disposed at one side of the base and connected to the two support carriages, two pulley blocks mounted at the two opposite ends of the protective cover and a cable wound round the pulleys of the pulley blocks and connected to the transmission carriage and the base by a respective cable connection plate. Thus, the transmission carriage utilizes the cable to carry one pulley block and then the protective cover, causing the protective cover to carry the two support carriages and the other pulley block, achieving the effect of supporting the screw rod.