This patent describes a three-phased reluctance motor (10) of stepper type with six coils placed in six slots (15.sup.1-15.sup.6) in a stator (5), n*6 teeth (7) in rotor (5) where n is an integer equal to or larger than 3, typically 8-16 and were the teeth (18) in stator (4) are shifted unsymmetrical so the motor (10) can produce torque at every angle between rotor (5) and stator (4).

This patent describes a three-phased reluctance motor (10) of stepper type with six coils placed in six slots (15.sup.1-15.sup.6) in a stator (5), n*6 teeth (7) in rotor (5) where n is an integer equal to or larger than 3, typically 8-16 and were the teeth (18) in stator (4) are shifted unsymmetrical so the motor (10) can produce torque at every angle between rotor (5) and stator (4).

A method includes forming elongated magnetic flux carrier portions in magnetically conductive sheets by cutting elongated magnetic flux barriers including one or more relief features into the magnetically conductive sheets, such that the magnetic flux barriers are separated from each other in radial directions of the magnetically conductive sheets. The method includes inserting or forming non-magnetic posts into the magnetic flux barriers such that each of the non-magnetic posts is elongated in a different radial direction of the radial directions from a first magnetic flux carrier portion to a second magnetic flux carrier portion of the magnetic flux carrier portions on opposite sides of at least one magnetic flux barrier; and forming at least part of a rotor for an electric machine assembly using the magnetically conductive sheets having the magnetic flux carrier portions, the non-magnetic posts, and the magnetic flux barriers.

Noise caused by a gap between a rotor and a plate can be suppressed even when there are dimensional variations in members or assembly states. In a configuration of a stepping motor including front side and end side stator assemblies (200, 300), a rotor (400) provided with a rotor member (402) and a shaft (403) that are accommodated in the stator assemblies (200, 300), and a front plate (210) and an end plate (310) that are arranged on both sides of the stator assemblies (200, 300) in an axial direction, and are configured to couple the stator assemblies (200, 300), a projection (700) in an annular shape is provided on a surface of the front plate (210) facing the rotor member (402) to protrude toward the rotor member (402), a coil spring (800) that is interposed between the front plate (210) and the rotor member (402) is accommodated in the inner side of the projection (700), and the rotor (400) is urged toward the end plate (310) by the coil spring to be elastically pressed against the end plate (310).

An electric machine assembly includes a rotor formed from one or more magnetically conductive sheets having elongated magnetic flux barriers separated from each other in radial directions that radially extend away from an axis of rotation of the rotor. The magnetic flux barriers are separated from each other by magnetic flux carrier portions of the one or more magnetically conductive sheets. The assembly also includes a non-magnetic post coupled with the magnetic flux carrier portions of the one or more magnetically conductive sheets on opposite sides of at least one of the magnetic flux barriers. The non-magnetic post is elongated in the radial directions from a first magnetic flux carrier portion to a second magnetic flux carrier portion of the magnetic flux carrier portions on the opposite sides of the at least one magnetic flux barrier.

The present disclosure relates to a stepping motor. The stepping motor includes a rotor assembly including a rotating shaft and a magnetic steel sheathed outside the rotating shaft and a number of stator assemblies. The stator assembly spacing is sheathed outside the rotor assembly. The stator assembly includes a fixed claw pole around the periphery of the rotor assembly and a coil on the fixed claw pole. The stator assemblies are arranged in layers along the axial direction of the rotor assembly in turn. Because the plurality of stator assemblies are arranged in the same shaft to drive a rotor assembly together, the problem of easy eccentricity is avoided, and the output efficiency is greatly increased.

The present disclosure relates to a stepping motor. The stepping motor includes a rotor assembly including a rotating shaft and a magnetic steel sheathed outside the rotating shaft and a number of stator assemblies. The stator assembly spacing is sheathed outside the rotor assembly. The stator assembly includes a fixed claw pole around the periphery of the rotor assembly and a coil on the fixed claw pole. The stator assemblies are arranged in layers along the axial direction of the rotor assembly in turn. Because the plurality of stator assemblies are arranged in the same shaft to drive a rotor assembly together, the problem of easy eccentricity is avoided, and the output efficiency is greatly increased.

A reluctance motor with a rotor which rotates about a longitudinal axis and an individual stator. The rotor has on a surface close to the stator a toothing, and the stator has on the surface close to the rotor a corresponding toothing, the teeth of which extend longitudinally. The stator has at least two cavities arranged successively in the longitudinal direction each configured to receive a toroidal coil which can be energized. The windings of the toroidal coils are wound concentrically around the longitudinal axis. The stator is penetrated on the side close to the rotor to form a respective air gap toward the cavities. The air gap is aligned in a circular-cylindrical manner and concentrically to the longitudinal axis and has a constant height longitudinally which is smaller than the extent of the toroidal coil in the direction of the longitudinal axis.

A reluctance motor with a rotor which rotates about a longitudinal axis and an individual stator. The rotor has on a surface close to the stator a toothing, and the stator has on the surface close to the rotor a corresponding toothing, the teeth of which extend longitudinally. The stator has at least two cavities arranged successively in the longitudinal direction each configured to receive a toroidal coil which can be energized. The windings of the toroidal coils are wound concentrically around the longitudinal axis. The stator is penetrated on the side close to the rotor to form a respective air gap toward the cavities. The air gap is aligned in a circular-cylindrical manner and concentrically to the longitudinal axis and has a constant height longitudinally which is smaller than the extent of the toroidal coil in the direction of the longitudinal axis.

A motor and a method of operating the motor uses an encoder disk attached to the rotor of the motor and an encoder reader positioned to optically obtain rotational information of the rotor. The encoder disk and the encoder reader are located within an interior region of the stator of the motor in which the rotor is positioned to rotate.