A method of assembling an electric power steering assembly includes providing a shaft that extends along a longitudinal axis between a first shaft end and a second shaft end. The method further includes extruding or drawing the shaft through a die to define a spline that extends between the first shaft end and the second shaft end. The spline includes a first tooth having a first tip. The method still further includes applying a sleeve over a portion of the spline, such that the sleeve extends from the second shaft end towards the first shaft end.

A compact power steering system is suitable for small vehicles. A torque sensor on a steering shaft detects operator intention to turn. In response, a motor provides torque to assistance in rotating the steering shaft. A strain wave gear set multiplies the motor torque. A coupler having a torsional isolator links the gearbox output to the steering shaft.

A steering arrangement for a vehicle includes: a hydrostatic steering unit provided with two work ports, a high-pressure port, a low-pressure port, a main branch of the flow arranged between the work ports and the high-pressure port and comprising a dosing device, and an amplification branch arranged between the work ports and the high-pressure port, in parallel with the dosing device, and comprising a flow-rate regulating device of the electrically actuated type, a steering shaft provided with a first end adapted for being connected to a steering member and a second end adapted for being connected to the hydrostatic steering unit, an electric motor configured to set the steering shaft in rotation, and an electronic control unit configured to actuate the flow-rate regulating device as a function of a parameter indicative of an operating condition of the vehicle.

A method of assembling an electric power steering assembly includes providing a shaft that extends along a longitudinal axis between a first shaft end and a second shaft end. The method further includes extruding or drawing the shaft through a die to define a spline that extends between the first shaft end and the second shaft end. The spline includes a first tooth having a first tip. The method still further includes applying a sleeve over a portion of the spline, such that the sleeve extends from the second shaft end towards the first shaft end.

A steering device exhibiting improved layout properties around a steering shaft. A steering device (1) installed in a vehicle has a first steering shaft (4) connected to the steering wheel (3), and a coaxial motor (20) which applies a rotational force to the first steering shaft (4) and is provided in a manner such that the output shaft thereof is coaxial with the first steering shaft (4).

A steering device (1) installed in a vehicle is equipped with: a steering wheel (10); a steering shaft (20) having a first shaft part (21), one end of which is directly connected to the steering wheel (10), and a second shaft part (22) connected to the first shaft part (21) on the other end side thereof; a coaxial motor (50) which applies a rotational force to the first shaft part (21), and has a motor housing (51) which supports the steering shaft (20) and surrounds the periphery of the first shaft part (21); and a motor securing unit (70) which, in order to determine the support position of the steering wheel (10), secures the motor housing (51) and a support bracket (60) secured inside the vehicle compartment.

A steering device (1) installed in a vehicle is equipped with: a steering wheel (10); a steering shaft (20) having a first shaft part (21), one end of which is directly connected to the steering wheel (10), and a second shaft part (22) connected to the first shaft part (21) on the other end side thereof; a coaxial motor (50) which applies a rotational force to the first shaft part (21), and has a motor housing (51) which supports the steering shaft (20) and surrounds the periphery of the first shaft part (21); and a support bracket (60) which extends in the axial direction of the steering shaft (20) in a front region inside the vehicle compartment, is secured to the vehicle compartment on the bottom end side and top end side thereof, and at the top end side thereof, sandwiches the motor housing (51) from both the left and right sides in the vehicle widthwise direction.

An electric power steering device includes: a steering column provided with: a base; an upper segment connected in a tiltable manner to the base, a steering axis comprising a lower axis rotatably contained inside the base; a hydrostatic steering assembly; an electrically assisted steering apparatus axially interposed between the steering column and the hydrostatic steering assembly and provided with: a support frame comprising a tubular central body; a shaft whose upper end axially projects outside an upper end of the central body and is connected to the lower end of the lower axis and whose lower end is connected to the hydrostatic steering assembly; and an electric motor positioned inside the central body of the support frame; in which the upper end of the central body is directly fixed to the base and in contact therewith.

The present invention reduces motor size in a steering device. To this end, this steering device (1) to be installed in a vehicle has: a power steering unit (12) positioned below the floor section (7) of the vehicle compartment (2); and a coaxial motor (20) which is provided directly above the power steering unit (12) and in a manner such that the output shaft thereof is coaxial with the input shaft of the power steering unit (12).

The present invention reduces motor size in a steering device. To this end, this steering device (1) to be installed in a vehicle has: a power steering unit (12) positioned below the floor section (7) of the vehicle compartment (2); a steering shaft (first steering shaft (4), second steering shaft (6), and third steering shaft (11)), one end of which is connected to a steering wheel (3) and the other end of which is connected to the power steering unit (12); and a coaxial motor (20) which applies a rotational force to the steering shaft and is provided in a manner such that the output shaft thereof is coaxial with the steering shaft.