A steering device includes a rack shaft that turns wheels, a bush slidably support the rack shaft, tie-rods joined to the rack shaft, boots that cover a joining portion that joins the rack shaft and the tie-rod. A protrusion part is formed on either one of the bush and a rack housing so as to protrude toward the other. A restriction groove into which the protrusion part is inserted is formed on the other. A space inside the first boot and a space inside the second boot constantly communicate with each other via the restriction groove.

A steering device includes a rack shaft that turns wheels, a bush slidably support the rack shaft, tie-rods joined to the rack shaft, boots that cover a joining portion that joins the rack shaft and the tie-rod. A protrusion part is formed on either one of the bush and a rack housing so as to protrude toward the other. A restriction groove into which the protrusion part is inserted is formed on the other. A space inside the first boot and a space inside the second boot constantly communicate with each other via the restriction groove.

A drag link guide assembly for guiding a drag link comprises a slide bushing and a housing enclosing the slide bushing. The housing comprises a socket portion, into which the slide bushing is inserted. The slide bushing comprises a locating area for the drag link having a substantially circular cylindrical periphery with at least one plane torsional locking face. The slide bushing comprises an outward-pointing structure, which interacts with a mating structure that is provided on the internal surface of the housing. A method for producing a drag link guide assembly is furthermore described.

A drag link guide assembly for guiding a drag link comprises a slide bushing and a housing enclosing the slide bushing. The housing comprises a socket portion, into which the slide bushing is inserted. The slide bushing comprises a locating area for the drag link having a substantially circular cylindrical periphery with at least one plane torsional locking face. The slide bushing comprises an outward-pointing structure, which interacts with a mating structure that is provided on the internal surface of the housing. A method for producing a drag link guide assembly is furthermore described.

A steering gearbox is equipped with a casing, a rack shaft, and a plurality of bushes. The rack shaft is accommodated in a casing to be movable in an axial direction. The plurality of bushes support the rack shaft to be movable in the axial direction and are attached to the casing.

A steering gearbox is equipped with a casing, a rack shaft, and a plurality of bushes. The rack shaft is accommodated in a casing to be movable in an axial direction. The plurality of bushes support the rack shaft to be movable in the axial direction and are attached to the casing.

A dust cap for a steering system is disclosed. A dust cap for a steering system, which has an accommodation hole for accommodating a pinion shaft and of which the lower part is coupled to a rack housing, according to an embodiment of the present invention comprises: a floor surface which extends from the upper part toward the outer side of the accommodation hole; a first rim forming a lateral wall on the edge of the floor surface; a second rim forming an intermediate wall between the first rim and the accommodation hole; and one or more slits insert-formed from the second rim toward the floor surface.

A dust cap for a steering system is disclosed. A dust cap for a steering system, which has an accommodation hole for accommodating a pinion shaft and of which the lower part is coupled to a rack housing, according to an embodiment of the present invention comprises: a floor surface which extends from the upper part toward the outer side of the accommodation hole; a first rim forming a lateral wall on the edge of the floor surface; a second rim forming an intermediate wall between the first rim and the accommodation hole; and one or more slits insert-formed from the second rim toward the floor surface.

A rack and pinion assembly for a steering assembly is disclosed. The rack and pinion assembly has: a housing; a rack disposed in the housing, the rack being translatable in the housing; a pinion engaging the rack for causing translation of the rack; and at least one rolling element connected to the rack. The at least one rolling element is translatable with the rack. The at least one rolling element rolls along an inner surface of the housing as the rack translates. A steering assembly having the rack and pinion assembly and a vehicle having the steering assembly are also disclosed.

An electric power steering apparatus includes: a pinion shaft connected to a steering shaft coupled to a steering wheel, the pinion shaft being configured to transmit an operation of the steering wheel by a driver; a rack bar elongated along a lateral direction of a vehicle, having a first screw recess defined with a predetermined length in a portion of an outer circumferential surface of the rack bar, and including, on one side, a rack gear coupled to and interlocked with the pinion shaft; a motor configured to generate a steering assist power in proportion to a steering torque applied to the steering wheel; and a roller screw unit rotatably engaged with and coupled to the first screw recess to transmit the steering assist power generated from the motor to the rack bar.