The present disclosure provides a rack bar supporting device of a steering apparatus for a vehicle. The rack bar supporting device includes: a support yoke to support a rack bar; a first cam member configured to have a front surface supporting the support yoke toward the rack bar and to have a rear surface provided with a first cam surface inclined in a circumferential direction thereof; a second cam member configured to have a front surface provided with a second cam surface inclined in a circumferential direction thereof to correspond to the first cam surface, to have a rear surface to which one end of a torsion spring is supported and coupled; a yoke plug; and an elastic pin.

Each of embodiments provides a power transmission device of a steering apparatus including: a first shaft that has an one-side end at which a coupling end of which a diameter is reduced and formed is provided; a second shaft that has an end facing the first shaft at which a coupling groove into which the one-side end of the first shaft is inserted is provided; and an elastic support member having an inner circumferential face into which the coupling end is inserted and an outer circumferential face that is supported on and coupled with an inner circumferential face of the coupling groove.

Disclosed herein is a damping coupler of an electronic steering apparatus. The damping coupler includes a first spline having a first shaft hole such that a worm shaft is inserted therein, with a first serration being formed in the first shaft hole to engage with a serration of the worm shaft; a second spline coupled to a side of the first spline, and having a second shaft hole such that the worm shaft is inserted therein, with a second serration being formed in the second shaft hole to engage with a serration of the worm shaft; and a molding surrounding outsides of the first and second splines, and coupled to a motor shaft.

A multi-strata radial damper configured to dampen forces exerted in a radial direction between a rack bar of an automobile and a bushing sleeve protecting the rack bar. The radial damper may include a stratum made of a polymer material. The radial damper may additionally dampen forces exerted in an axial direction between the tie rod and the bushing sleeve.

Steering assembly mounts with curved interfaces are disclosed herein. An apparatus disclosed herein includes a first bushing including a first outer diameter, a first inner diameter, and a first curved surface disposed between the first outer diameter and the first inner diameter, the first curved surface to receive a corresponding second curved surface of the first structure, a second bushing including a second outer diameter, a second inner diameter, and a third curved surface disposed between the second outer diameter and the second inner diameter, the third curved surface to receive a corresponding fourth curved surface of the first structure, and a fastener extending through the first bushing and the second bushing, the fastener to extend through a portion of the second structure.

The disclosure relates to a steering system useful for providing stable control during rear axle steering of harvesters, such as self-propelled windrowers. The steering system utilizes a single steering cylinder and retracted caster cylinders to regulate rotation of the casters during rear axle road operation mode. The steering system locks the steering cylinder and uses the caster cylinders for damping during in-field operation mode.

An apparatus for attenuating vibration transmission between first and second structures includes a rod extending entirely through, and being mechanically connected to, both of the first and second structures. The rod defines a central longitudinal axis. A piezoelectric sensor senses vibrations in at least one of the first and second structures and responsively generates a voltage. The piezoelectric sensor is disposed entirely longitudinally between the first and second structures. A piezoelectric actuator actively attenuates the vibrations sensed by the piezoelectric sensor. The piezoelectric actuator is at least partially driven responsive to voltage generated by the piezoelectric sensor. The piezoelectric actuator is disposed entirely longitudinally between the first and second structures. At least one of the piezoelectric sensor and the piezoelectric actuator has a throughhole through which the rod entirely extends.

A damping stopper is interposed between two members axially displaced relative to each other and is provided with an elastic body which, when the interval between the two members decreases, is axially compressed by the two members and expands radially outward. In the elastic body, a second member suppressing the expansion is located in one axial region and attached to the outer periphery. When axially compressed by the two members, the elastic body expands while receiving resistance by the second member. The expanding elastic body contacts the side wall of one of the two members.

Example power steering assembly mounts with tapered protrusions apparatus disclosed herein include a power steering assembly. The power steering assembly includes a housing. The housing includes a flexible mount and a rigid mount to attach the power steering assembly to a subframe. The rigid mount includes a tapered protrusion to deform the subframe to reduce movement of the rigid mount relative to the subframe.

A rack-assist-type electric power steering apparatus may include: a motor pulley provided on or coupled to a shaft of a motor; a nut pulley provided on or coupled to an outer circumferential surface of a ball nut coupled to a rack bar via a ball; a belt coupled to the motor pulley and the nut pulley, the belt comprising provided with one or more first magnetic bodies; and a rack housing enclosing or housing at least a portion of the motor pulley, the nut pulley and the belt are housed. The rack housing may comprise one or more second magnetic bodies provided on an inner circumferential surface thereof facing or opposite to the belt. Alternatively, the rack housing may comprise a support portion protruding from an inner surface of the rack housing, and one or more second magnetic bodies may be provided on a surface of the support portion.