Abstract: A plain bearing for a steering spindle of a steering column for a motor vehicle. The bearing includes an inner ring with an axially continuous bearing opening for slidably receiving the steering spindle. A prestressing element is configured to exert a prestressing force on the inner ring to clamp the inner ring on the steering spindle and thereby to assign a defined, uniform braking torque.

Abstract: An adjusting drive for a steering column for a motor vehicle may include a threaded spindle that by way of an external thread engages in a spindle nut. The adjusting drive may also include a drive motor that is coupled to the threaded spindle or the spindle nut such that driving at least one of the threaded spindle or the spindle nut with the drive motor causes the threaded spindle and the spindle nut to rotate relative to one another. To reduce production complexity and improve functionality, the threaded spindle may have a core element that at least in portions is coaxially surrounded in a fixed manner by a threaded element that is configured from plastic and comprises the external thread.

Abstract: A rolling bearing for mounting a driving worm of a power-assisted steering system of a vehicle includes a rotatable inner ring and a rotationally fixed outer ring. Rolling elements arranged between the inner and outer ring are guided by a channel-shaped first raceway arranged on a radially outer side of the inner ring and by a channel-shaped second raceway arranged on a radially inner side of the outer ring. The second raceway includes a cross-sectional profile that varies around its circumference. The cross-sectional profile allows laterally offset rolling elements to roll and thus tilting of the inner ring about a tilting axis orthogonal to the axis of rotation of the rolling bearing if the tilting axis assumes a predetermined tilted position in the circumferential direction of the second raceway and limits tilting of the inner ring to a minimum when the tilting axis is angled 90° to the tilted position.

Abstract: An energy absorption device for a steering column for a motor vehicle includes an energy absorption element for absorbing energy by a relative movement between at least two components of the steering column in a crash situation, and at least one arresting element for arranging in a blocking position for blocking the relative movement.

Abstract: An adjustable steering column may include a casing unit that rotatably supports a steering spindle part and that is mounted in a guide box in an axially sliding manner and can be axially adjusted by a motor drive. The motor drive has an electric motor secured to the guide box and drives an axially aligned threaded spindle that is mounted on the guide box in a rotatable and axially fixed manner and that engages into an adjustment nut. The adjustment nut is connected to the casing unit, is axially movable together with the casing unit relative to the guide box, and is mounted in a connection part secured to the casing unit to transmit axial forces to the casing unit. The adjustment nut may be guided between opposing inner guide surfaces of the connection part with clearance such that the adjustment nut is movable within the guide surfaces on a plane orthogonal to an axial direction.

Abstract: A steer-by-wire steering system for a motor vehicle may include a steering wheel and a feedback actuator connected to the steering wheel for providing road feedback to a driver. The feedback actuator may include an electric motor and an electronic control unit. The feedback actuator may further include at least two redundant rotor position sensors. The electronic control unit may be equipped with sleep-mode functionality, which in case an ignition is off awakens the at least two redundant rotor position sensors periodically or upon movement of a rotor of the electric motor to detect and measure rotation of the rotor.

Abstract: A motor vehicle power steering system may include a steering handle having at least one handle sensor for detecting a handle position of the steering handle, an electronically controlled steering actuator having an electric motor for providing an actuating torque based on the detected handle position, a mechanical power transmission for transmitting the actuating torque to steered wheels, a position sensor for detecting a wheel position of the steered wheels, and a monitoring device that is configured to relate the wheel position detected by the position sensor to at least one input parameter of the mechanical power transmission given by the electric motor to monitor the functioning of the mechanical power transmission.

Abstract: A method for iteratively determining the radius of a wheel of a number of wheels can be utilized for a motor vehicle having a driving direction sensor unit for detecting straight line travel, with each wheel being assigned an incremental sensor unit for detecting increments embodying wheel rotational movements.

Abstract: A steering column may include a steering shaft that is mounted so as to be rotatable about its longitudinal axis relative to a steering column housing and a revolution limiter to limit rotation of the steering shaft. The revolution limiter has a winding core that is connected fixedly to the steering shaft for conjoint rotation therewith. A strap element may be attached to both the winding core and the steering column housing. The strap element may be elongate, may be deformable flexibly transversely with respect to its longitudinal extent, and may have a strap section that can be wound on the winding core in a winding direction around the longitudinal axis. To decrease complexity and to facilitate compactness, the winding direction of the strap section is reversible.

Abstract: A steering column for a motor vehicle comprising a steering shaft that is mounted rotatably in a steering shaft bearing unit and a rotation limitation device that is configured to limit rotation of the steering shaft. The rotation limitation device may have a slotted guide carrier that is fastened to one end of the steering shaft and a spiral slotted guide track. A sliding block may be guided movably in the slotted guide track. The sliding block may be fastened to a lever that is held tiltably on the steering shaft bearing unit and that has a counterstop that can be brought into operative engagement with a stop component that is fastened to the steering shaft, for limiting rotation of the steering shaft.

Abstract: A motor vehicle power steering mechanism with an electric motor for steering assist and/or steering, and a steering controller, which controls the electric motor with a position control mode for autonomous driving and/or automatic steering and a torque control mode for manual steering by a driver. The steering controller includes a steering column reference controller, an arbitration unit, a column torque controller, a steering algorithm, and the steering system. The steering column reference controller calculates for position control based on a reference position and a measured position, and a first reference steering column torque. A steering algorithm calculates for torque control based on a measured column torque and a second reference steering column torque. The arbitration unit weights and adds the first and second reference steering column torques, and the output of the arbitration unit is input to the column torque controller.

Abstract: A pivot bearing arrangement for a steering column of a motor vehicle, having a steering shaft which is rotatably mounted in a casing unit in the direction of its axis of rotation but rigidly mounted in the radial direction, is improved in terms of a simple and cost-effective construction in that the casing unit is provided with at least one first sliding bearing shell, which comprises a first circumferential radial projection, which engages in a first circumferential groove.

Abstract: 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.

Abstract: An electromechanical power steering system may include an electric motor with a motor shaft that drives a shaft that meshes with a helical gearwheel. The shaft may be disposed in a gear housing, and a first end of the shaft may be mounted in a bearing arrangement such that the shaft is rotatable about an axis of rotation. A second end of the shaft may be mounted in a floating bearing in the gear housing. The floating bearing may be enclosed by a compensation device having an inner ring that on two radially opposite sides includes a respective nose formed from an elastomer. The compensation device may also include an outer ring that encloses the inner ring circumferentially. The outer ring may have lugs for receiving the noses. In an unloaded state, a gap may exist between the inner ring and the outer ring outside a region of the noses.

Abstract: A method for operating a motor-adjustable steering column may be employed by a motor vehicle with an actuating unit supported by a supporting unit. A steering spindle may be rotatably supported in the actuating unit. The actuating unit may be adjustable relative to the supporting unit by means of at least one adjustment drive. The adjustment drive is controlled by a control unit, and the adjustment speed caused by the adjustment drive is determined based on measurement data of a sensor. The control unit controls the adjustment drive in a control loop based on a control deviation between a specifiable speed profile and the determined adjustment speed.

Abstract: A steering column may include a casing unit in which a steering spindle is rotatably mounted about a longitudinal axis and which is connectable via a height adjustment lever to a vehicle. The height adjustment lever has two opposing sidewalls between which the casing unit is received pivotably about a joint axis. The casing unit may have guide grooves that extend in a direction of the longitudinal axis. A sliding body may be disposed between each sidewall and the casing unit. Each sliding body may be displaceable in a sliding manner in a guide groove in the direction of the longitudinal axis and is supported on the respective sidewall. A supporting element may be arranged between each sliding body and the respective sidewall, which supporting element is supported from the inside against the respective sidewall and pushes the respective sliding body from the outside into the respective guide groove.

Abstract: A method for controlling a steer-by-wire steering system involves determining a torque request signal with a position controller based on desired and actual steering angles, checking with a checking device for an error state of the position controller, selecting the torque request signal as a checked torque request signal if the error state has not been determined, selecting a reference torque signal as the checked torque request signal if the error state has been determined, and transmitting the checked torque request signal to the steering actuator. By evaluating a cumulative deviation variable, which is calculated by a calculation unit of the checking device as a time integral over a control deviation between the desired and actual steering angles, the checking device determines whether the error state is present and determines the reference torque signal with a reference controller based on the control deviation.

Abstract: An actuating device may include an energy recovery unit for a mechanical brake system. The actuating device may have an actuating drive for a brake application movement of a brake part for a service brake function. The actuating device has a force cartridge with a prestressed spring and with a ramp bearing as the energy recovery unit The ramp bearing may be fastened to the actuating drive on one side and to the spring on the other side. The force cartridge is fitted on a line of force action of the actuating drive and interacts with the actuating drive such that a force component for assisting the actuating drive is provided in a manner dependent on an adjustment position of the actuating drive.

Abstract: A gear wheel for an adjustment drive mechanism which has a ring gear which is attached coaxially circumferentially to the outside of a core element which has an axial passage opening, in which a threaded element is fitted, the latter having an axially continuous internal thread having at least one thread tooth running around helically. The threaded element is formed from a plastic as an injection molded plastic part, which is molded onto the core element on an inner wall of the passage opening.

Abstract: An electromechanical power steering system may include an electric servomotor that has a motor shaft and drives a shaft that meshes with a helical gear. The shaft is disposed in a gearbox housing and rotatably mounted in a bearing assembly. A pretensioning installation, for adjusting engagement between the helical gear and the shaft, resiliently pretensions a movable bearing element of the bearing assembly relative to the gearbox housing. The gearbox housing has a housing portion having first and second contact faces, the normals of which do not intersect. The bearing assembly has a bearing support that forms the movable bearing element and has a lever arm having a free end that extends from a main body of the bearing support and on the gearbox housing lies against the second contact face. The main body has an eccentric cam that on the housing lies against the first contact face.