Abstract:
A method of heat-treating a rack bar includes a step of continuously conveying a rack bar provided with a rack teeth portion and a ball screw portion by a quenching means, and a step of sequentially applying a quenching treatment to each circumferential surface of the rack teeth portion and the ball screw portion. The quenching treatment is preferably and sequentially applied to each entire circumferential surface of the rack teeth portion and the ball screw portion.
Abstract:
A rack-and-pinion steering gear is provided. The gear comprises a lower shaft, a pinion gear, a first bearing, and a plurality of stakes. The lower shaft has a first end, a second end, and a shoulder depending radially outward from the lower shaft. The pinion gear is defined in a portion of the lower shaft proximate the first end. The first bearing has a first side, a second side, and an inner edge. The inner edge is disposed on the lower shaft such that the first side abuts the shoulder. The stakes have a first section that conforms to a radius defined at an intersection of the second side and the inner edge of the first bearing, and a second section resting against the second side of the first bearing.
Abstract:
The object of the invention is to provide a rack shaft having two rack teeth groups and hollowed throughout the whole body, to lightweightize the shaft and to reduce the cost. The two rack teeth groups are located longitudinally apart from each other and have phase difference related to an angle around the axis of the shaft. After the two rack teeth groups are formed simultaneously or sequentially by die forming on the flat bottoms of the workpiece beforehand gutter-shaped, the legs of the gutter-shaped workpiece are bent to butt to each other and, thereby, a tubular body of the shaft is given to the workpiece. The centers of the material are offset beforehand corresponding to the phase difference.
Abstract:
A rack and pinion steering gear (10) comprises a housing (12) having an longitudinally extending passage (14). A yoke bore (22) extends perpendicular to the longitudinally extending passage (14) and connects with the longitudinally extending passage (14) within the housing (12). A pinion gear (20) is rotatably mounted in the housing (12). A rack bar (16) extends through the longitudinally extending passage (14) of the housing (12) and is movable relative to the pinion gear (20). The rack bar (16) has teeth in meshing engagement with the teeth (34) of the pinion gear (20). A yoke assembly (36) is located in the yoke bore (22) for at least partially supporting and guiding movement of the rack bar (16) relative to the pinion gear (20). The yoke assembly (36) includes a yoke (38), a yoke plug (42), and an elastomeric spring (40). The yoke (38) is axially spaced from the yoke plug (42) by the elastomeric spring (40). The elastomeric spring (40) is secured to the yoke (38) and to the yoke plug (42) so that the yoke (38), the elastomeric spring (40), and the yoke plug (42) form a unitized assembly.
Abstract:
A steering gear assembly includes a pinion defining a pinion axis and a rack defining a rack axis. A bearing assembly includes a roller bearing biased against the rack to generate a normal force pressing the rack into engagement with the pinion. The bearing assembly engages an outer surface of the rack at two points circumferentially spanning a large degree to provide improved support. The roller bearing is preferably a plurality of ball bearings engaging an outer race. A deformable member may be utilized that is positioned between the outer race and the rack housing. The deformable member may comprise a series of O-rings which providing a force biasing the outer race towards the pinion.
Abstract:
Barrel-shaped pinions and methods for their engagement with racks are provided allowing for a larger margin of inaccuracy between the rack and pinion gear set avoiding the necessity of costly, high-precision manufacturing processes. The generally barrel-shaped pinion has an outer toothed surface extending axially along a portion of the pinion. The toothed outer surface has first and second ends and a middle section. A diameter of the middle section is larger than a diameter of both the first and second ends. Also provided is a dual-pinion rack gear system utilizing a first driven pinion, a second generally barrel-shaped drive pinion and a rack. Teeth of the first driven pinion and teeth of the second drive pinion mesh with teeth of the rack at two separate locations.
Abstract:
A hypoid reducing device that allows the coupling/connection between a hypoid gear set and a motor to be more flexible and have a wider applicability. A hypoid pinion shaft is supported by two bearings in a bearing case portion in a gear case. A hypoid pinion engages with a hypoid gear having an orthogonal axial line. The hypoid pinion shaft is provided with a base end portion that is a solid shaft portion projecting toward a motor beyond the bearing on the motor side. The motor and the bearing case portion of the hypoid gear set are coupled with a separately provided joint case, while the motor output shaft and the base end portion of the hypoid pinion shaft are coupled through coupling members in the joint case.
Abstract:
A steering gear comprising a housing, a drive pinion, a gear rack, a thrust pad, a compensating member and a torsion spring. In this steering gear, the gear rack is shiftable in said housing and the thrust pad is biasing the gear rack against the drive pinion. Further, the compensating member has a cam surface, the cam surface is supporting the thrust pad; the torsion spring is exerting a torque upon the compensating member and the torque is causing the compensating member to urge the thrust pad from the compensating member towards the drive pinion.
Abstract:
A rack and pinion steering gear (10) comprises a housing (12). A pinion gear (22) rotatably mounted in the housing (12). Teeth (28) of the pinion gear (22) engage teeth of a rack bar (30) that extends through the housing (12) and that is movable relative to the housing (12). A yoke assembly (38) is located in the housing (12) for at least partially supporting and guiding movement of the rack bar (30) relative to the pinion gear (22). The yoke assembly (38) comprises a first member (46) for contacting the rack bar (30) and a second member (48) for pivotally supporting the first member (46). Structure (70) of the second member (48) engages structure (58) of the first member (46) to enable the first member (46) to pivot in all directions about a point of rotation (P). The point of rotation (P) is spaced from a location of engagement of the first and second members (46 and 48).
Abstract:
A rack and pinion steering gear (10) comprises a housing (12). A yoke assembly (40) is in the housing (12) for at least partially supporting and guiding movement of a rack bar (34) relative to a pinion gear (26). The yoke assembly (40) comprises a yoke (42) and a plurality of rotatable members. The yoke (42)has a first end surface (48) and an axis (A) that extends transverse to the direction of movement of the rack bar (34). Each of the plurality of rotatable members is supported by the yoke (42). A portion of each rotatable member projects outward of the first end surface (48) of the yoke (42) for contacting the rack bar (34). Each rotatable member is rotatable about its axis and is fixed against movement along the yoke axis (A) relative to the yoke (42).