A steering apparatus for assisting rotation of a steering shaft in a steering system. The apparatus includes a motor having a drive shaft that rotates about a drive shaft axis and an output shaft that rotates about an output shaft axis. The output shaft axis extends parallel to the drive shaft axis. The output shaft is connected for rotation with the steering shaft. A gear train drivingly connects the motor to the output shaft. The gear train includes a worm screw and a worm wheel.

The present disclosure relates to a reducer of an electric power steering apparatus. The present embodiments provide a reducer of an electric power steering apparatus, comprising: a first bearing configured to be coupled to one end of the worm shaft on one side where a motor shaft is connected, among both ends of the worm shaft; a second bearing configured to be coupled to the opposite end of the worm shaft; a plug bolt configured to have a seating groove formed on a support surface for axially supporting the first bearing and configured to have an outer circumferential surface coupled to a gear housing; and a damper configured to support an end of the first bearing and configured to be coupled to the seating groove of the plug bolt.

One object is to provide a steering device that facilitates disengagement of a speed reducer so that, for example, when the speed reducer fails, the speed reducer can be disengaged to enable steering of a vehicle with a manual operational force alone. This application relates to a steering device provided with a steering mechanism and a speed reducer. The steering mechanism steers tires of a vehicle under a steering force from a steering wheel. The speed reducer is connected to a motor for outputting a steering assistance force corresponding to the steering force. The speed reducer enlarges the steering assistance force and transmits the enlarged steering assistance force to the steering mechanism. The speed reducer is connected to the steering mechanism via a speed reducer arm.

A driving-side transmission portion of an output shaft of an electric motor and a driven-side transmission portion of a worm shaft are coupled to each other via a torque transmission joint including an elastic member and a coupling such that the torque can be transmitted. One axial end portion of a coupling-side concave-convex portion of the coupling is engaged with a first driving-side concave-convex portion of the driving-side transmission portion with a gap in the circumferential direction, and the other axial end portion thereof is engaged with a first driven-side concave-convex portion of the driven-side transmission portion with a gap in the circumferential direction. The elastic member is provided between an axial center portion of the coupling-side concave-convex portion, and a second driving-side concave-convex portion of the driving-side transmission portion and a second driven-side concave-convex portion of the driven-side transmission portion such that the torque can be transmitted respectively.

A steering system for a road vehicle; the steering system comprises: a steering wheel provided with an outer ring, which is mounted so as to rotate around a rotation axis and has no mechanical connection to steering wheels; a support element, which, on one side, can be rigidly fixed on the inside of the vehicle and, on the other side, is connected to the steering wheel so as to support the steering wheel; and a position sensor, which is designed to detect the angular position of the outer ring of the steering wheel around the rotation axis. The support element is telescopic so as to vary its axial size along the rotation axis in order to change the axial position of the steering wheel.

A steering system includes: a steering shaft to which a steering member is coupled; a worm wheel attached to the steering shaft so as to be rotatable integrally with the steering shaft; a housing that houses the worm wheel; an output shaft that is coaxial with the steering shaft and rotatable relative to the steering shaft and coupled to a steering operation mechanism; and a clutch mechanism that enables and disables transmission of power between the steering shaft and the output shaft. The clutch mechanism is housed and disposed in an internal space in the housing. A solenoid in the clutch mechanism is disposed on the opposite side of the worm wheel in an axial direction from a mechanical portion of the clutch mechanism.

An axial load bearing assembly that may be for a steering gear box apparatus includes a first member, a second member, a jacket, and an elastomeric ring. The first member includes a first surface facing axially with respect to a centerline. The second member is constructed and arranged to move axially with respect to the first member between an extended state and a compressed state. The second member includes a second surface that axially opposes the first surface. The jacket is engaged to one of the first and second members, and includes a face facing radially inward. The elastomeric ring is disposed axially between the first and second members for axial compression, and is in biased contact with the face at least when in the compressed state preventing radial expansion of the elastomeric ring during axial compression.

A worm wheel of an electric power steering apparatus includes: an inner wheel coupled to a steering shaft; an outer wheel disposed outside an outer circumference of the inner wheel and having a plurality of teeth on an outer circumferential surface to be engaged with a worm of a worm shaft; and a damper interposed between the inner wheel and the outer wheel.

An object of the present invention is to provide a rotational angle detection apparatus and a power steering apparatus capable of detecting a rotational angle of a rotational shaft eve when a failure has occurred in a magnetic detection portion. One aspect of the present invention is a rotational angle detection apparatus including a first magnetic detection portion provided on a rotational axis and configured to detect a change in a magnitude or a direction of a magnetic field, and a second magnetic detection portion provided on the rotational axis and disposed at a position offset from the first magnetic detection portion in a direction along the rotational axis. The second magnetic detection portion is configured to detect the change in the magnitude or the direction of the magnetic field. The rotational angle detection apparatus further includes a magnet provided on an outer side in a radial direction of the rotational axis with respect to the first magnetic detection portion and the second magnetic detection portion and disposed in such a manner that an N-pole and an S-pole face each other around the rotational axis. The magnet is provided rotatably relative to the first magnetic detection portion and the second magnetic detection portion. The rotational angle detection apparatus is configured to detect a rotational angle of the magnet relative to the first magnetic detection portion and the second magnetic detection portion based on signals output from the first magnetic detection portion and the second magnetic detection portion.

An adjusting device for automatically adjusting a worm on a worm wheel of a worm gear for an electromechanical auxiliary power steering system for a vehicle, includes a spring, a guide linkage, and a pressure piece. The spring is shaped so as to exert a spring force onto the guide linkage in order to radially push the guide linkage towards the worm. The guide linkage is designed to transmit the spring force onto the pressure piece. The pressure piece, which is connected to the guide linkage, is designed to contact a worm section of the worm in order to exert an adjusting force, which is produced by the spring force, onto the worm. The adjusting device additionally has a clamping device which is designed to prevent the guide linkage from moving back away from the worm.