A device for a steering system of a motor vehicle for pressing a toothed rack against a drive pinion is specified, the device having a housing and a thrust piece which is mounted displaceably in the housing and which has a circumferential wall which is in contact with the housing, the thrust piece having, on its circumferential wall, at least one depression which runs in a circumferential direction at least in certain portions and which delimits a hollow chamber arranged between thrust piece and housing.

An electric power steering apparatus includes left and right swing arm members, right and left tie rods pivotally connected at inner ends to arm portions of the swing arm members via a relay rod pivotally connected to the arm portions at both ends, a rack-and-pinion device in which one end of a rack bar is connected to the arm portion of one of the swing arm members, and a steering input transmission system that transmits a steering input to the rack-and-pinion device. An electric steering assist force applying device is connected to the arm portion of the other swing arm member, and applies a force to assist the other swing arm member to swing.

A steering apparatus includes left and right swing arm members, right and left tie rods pivotally connected at inner ends to arm portions of the swing arm members via a relay rod pivotally connected to the arm portions at both ends, a rack-and-pinion device in which one end of a rack bar is connected to the arm portion of one of the swing arm members, and a steering input transmission system that transmits a steering input to the rack-and-pinion device. The rack-and-pinion device includes a pair of pressing devices disposed on both sides of the pinion along the longitudinal direction of the rack bar and pressing the rack bar against the pinion.

The objective of the present invention is to reduce the impact of production variability in a radius of curvature of a rear surface of a rack bar, for example, while enlarging a region of contact with the rack bar. A concave surface (330) is used as a rack guide seat (32) sliding surface (33). In a YZ cross section perpendicular to an axial direction of a rack bar, the concave surface (330) includes: a pair of first arcuate surfaces (331A, 331B) which are disposed on a peripheral edge side (320) of the sliding surface (33), from two positions of contact TA, TB with a rack bar rear surface (22), the positions of contact TA, TB having line symmetry with respect to a straight Line O3 joining a center O of a rack bar (20) with a bottom portion center C of the sliding surface (33), and which have line symmetry with respect to the straight Line O3; and a pair of second arcuate surfaces (332A, 332B) which are disposed on a bottom portion side (321) of the sliding surface (33), from the positions of contact TA, TB, and which have line symmetry with respect to the straight Line O3. With regard to gaps to the rack bar rear surface (22) in positions separated by the same distance from the positions of contact TA, TB, the gaps from the first arcuate surfaces (331A, 331B) are greater than the gaps from the second arcuate surfaces (332A, 332b).

A rack and pinion steering system includes a housing, a rack, a pinion gear, and a radially preloaded rack bearing. The rack is supported by the housing, and the pinion gear is meshed to the rack. The radially preloaded rack bearing is supported and preloaded to the housing and is preloaded to the rack.

A rack and pinion steering apparatus including: a housing; a pinion inserted into the housing and configured to be rotatable; a rack configured to pass through the housing and engage with the pinion so that the rack moves linearly; a support mounted to the housing; and a liner supported by the support, coming into contact with the rack, and having space that stores the lubricant. In the rack and pinion steering apparatus, abrasion of the components may be reduced, and vibration and noise may be mitigated.

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.

A torque detection device that further suppresses intrusion of foreign matter into a magnetism collection holder. A first magnetism collection holder has a first ring portion and a substrate housing portion. A second magnetism collection holder has a second ring portion and a substrate housing portion. A pair of flanges are provided on both side surfaces of the substrate housing portion. The substrate housing portion is provided with a partition wall to be fitted between the flanges. A substrate arrangement portion is provided with a partitioning portion and an extended portion. When the substrate housing portion and the substrate housing portion are stacked on each other, the extended portion is fitted with a recessed portion. The substrate arrangement portion is also provided with a partitioning portion. An extended portion to be fitted with the recessed portion is provided at the distal end of the partitioning portion.

The present invention is to provide a vehicle-mounted apparatus having a biasing structure using a coil spring capable of reducing a lateral force of a coil spring that is applied to a biasing target member. When N1, n1, N0, and n0 represent the number of effective turns when the relief valve spring 37 is set in a valve hole 34 of a spool 29 in a compressed state, a value of an integer of N1, the number of effective turns when a length of the relief valve spring 37 is a natural length, and a value of an integer of N0, respectively, the spring 37 satisfies an equation 1: 0N1n10.25 or an equation 2: 0.75N1n1<1.

A steering assembly including an inner steering member; an outer steering member; a leaf spring disposed between the inner steering member and the outer steering member and adapted to bias the inner steering member, wherein the leaf spring comprises an inner portion and a plurality of outer portions, wherein the outer portions comprise end portions of the leaf spring that are folded over such that the outer portions overlie the inner portion, forming a folded edge; and a low friction layer supported by the leaf spring.