An embodiment discloses a motor comprising: a stator; a rotor disposed to correspond to the stator; and a shaft coupled to the rotor. The rotor includes a rotor core coupled to the shaft, a plurality of magnets disposed outside the rotor core, and a can disposed to cover the rotor core and the magnets. The can includes a base, a body extending from the base in the axial direction, and a plurality of extension portions extending from the end portion of the body, wherein with reference to the radial direction, the radius R2 from the center C to the extension portions is longer than the radius R1 from the center C to the body. Accordingly, the motor can induce easy insertion of the magnets by using the can having two regions having different radii, thereby simplifying a manufacturing process of the motor and improving productivity thereof.

To provide a rotary electric machine apparatus which can perform current control which reduces a torque ripple component effectively, using a rotary electric machine in which the permanent magnet of the rotor has the skew structure which shifts the magnetic pole position in the circumferential direction at each position in the axial direction. When defining, as the current vector of most advanced phase, a current vector of current command values calculated on the dq-axis rotating coordinate system of most advanced phase, and defining, as the current vector of middle phase, a current vector of current command values calculated on the dq-axis rotating coordinate system of middle phase, the rotary electric machine apparatus brings a controlling current vector close to the current vector of most advanced phase from the current vector of middle phase, as the winding currents increase.

According to an embodiment, provided is a motor which comprises: a shaft; a rotor coupled to the shaft; a stator disposed corresponding to the rotor; and a housing disposed on the outside of the stator. The stator includes: a stator core; an insulator coupled to the stator core; a plurality of projections extending from the lower end of the insulator; and a protruding portion disposed below the insulator and fixed to the housing. The plurality of projections are spaced apart from each other in the circumferential direction, and at least a portion of the protruding portion is disposed in the spaces formed between the plurality of projections.

The present disclosure relates to a composition for a rack housing member of a vehicle having excellent dimensional stability, and a rack housing member of a vehicle formed therefrom. In an embodiment, the composition for a rack housing member of a vehicle comprises 100 parts by weight of a base resin containing polybutylene terephthalate, an acrylonitrile-styrene-acrylate copolymer, and polyethylene terephthalate, and 40 to 75 parts by weight of an inorganic filler, wherein the inorganic filler includes a glass fiber and a plate-shaped mineral filler.

Disclosed in one embodiment is a busbar comprising: an insulating body; a plurality of neutral terminals arranged in the insulating body; and a plurality of first driving terminals, second driving terminals, and third driving terminals arranged in the insulating body, wherein the plurality of neutral terminals, first driving terminals, second driving terminals, and third driving terminals are electrically insulated, respectively, and the shape of the plurality of the first driving terminals, the second driving terminals, and the third driving terminals are the same.

Provided is an electric drive device which controls a current supplied to coils during normal operation so as to be less than a current limit value when normal, which is determined from heat generating properties and heat radiating properties of a thermally coupled body that includes the coils and an inverter circuit. When an abnormality in each group or each phase of the coils and the inverter circuit is detected, the supply of current to all phases of a group suffering an abnormality in the coils, or to a phase that is not capable of continuous operation, is stopped or reduced; and the limit value of the current supplied to a coil that is capable of continuous operation is reset to a current limit value in the event of abnormality, which is larger than the current limit value when normal, within the range of improvement of the heat generating properties of the thermally coupled body due to the stopping or reduction of the supply of current.

A drive device of an electric power steering apparatus includes a motor housing fixed to a gear housing, a stator, which is received in an inside of the motor housing, a rotor, which is rotatably placed on an inner side of the stator, and a shaft, which is rotated integrally with the rotor. The motor housing includes an engaging portion. The engaging portion has a thread, which is coaxial with a rotational axis of the shaft and is threadably engaged with the gear housing.

A torque sensor for use in an electric power assisted steering system comprises a first shaft, a second shaft, and a torsion bar, a hollow sleeve that is secured to the first shaft and extends along the torsion bar to at least partially axially overlap the second shaft, angular deflection indicating means that produce a signal that is dependent on the angular deflection of the first shaft relative to the second shaft as a torque is applied across the torque sensor that causes the torsion bar to twist, at least one drive dog fixed to the sleeve and at least one corresponding drive dog fixed to the second shaft, in normal operation the two dogs being offset so that they permit a defined range of angular deflection of the torsion bar but will engage each other to provide a path for torque to be transferred from the first shaft to the second shaft in the event of a failure of the torsion bar, and a connecting element which has a first part that is secured within a bore in one of the second shaft and the sleeve, the connecting element having a second part that extends into a feature of the other of the second shaft and the sleeve, at zero torque across the torque sensor the connecting element being spaced circumferentially from the feature by an angular distance greater than the spacing between the drive dogs and spaced from the feature in a direction along the axis of the shafts that is less than the overlap of the drive dogs in that direction to prevent the shafts moving apart in the event of failure of the torsion bar by an amount that would otherwise prevent the drive dogs engaging.

A gearbox assembly for an electric power assisted steering apparatus includes a gearbox housing, a worm shaft, a main bearing assembly, and a first fulcrum means. The worm shaft may be supported relative to the housing by a main bearing assembly at an end closest to the motor. The main bearing assembly may include an inner ring defining an inner bearing race, an outer ring defining an outer bearing race, and a plurality of bearings that run between the two races. The first fulcrum means may be located on a first side of the main bearing assembly which reacts only the axial component of the wormshaft tooth load for a first direction of gearwheel torque. A second fulcrum means may be located on a second, opposing, side of the main bearing assembly, which reacts only the axial component of the wormshaft tooth load for the second direction of gearwheel torque.

A steering device includes: a housing including a first planar surface, the housing being configured to accommodate a part of a rack shaft; an electric motor including a second planar surface facing the first planar surface, the electric motor including a bracket configured to support a rotary shaft; a tightening member configured to tighten the housing and the bracket in a state where the first planar surface and the second planar surface are mated; and a sealing member configured to provide sealing between the housing and the bracket at a position that is closer to the rotary shaft than the tightening member is. At least one of the first planar surface and the second planar surface is formed with a recess located between the tightening member and the sealing member and depressed from the at least one of the first planar surface and the second planar surface.