A method of manufacturing a rotor is disclosed. A magnet is inserted into a magnet hole of a rotor core. The method comprises inserting an insertion member into the magnet hole having a first opening and a second opening. The method comprises fixing the magnet to the insertion member extending out from the second opening. The method comprises inserting the magnet, which is fixed to the insertion member, into the magnet hole from the second opening by pulling the insertion member extending out from the first opening in a direction separating away from the rotor core. The method comprises cutting the insertion member extending out from the first opening.

The invention relates to a claw pole stator (1) for a transverse flux machine (2). The claw pole stator (1) is made of a plurality of segments (3) that are arranged next to one another along a circumferential direction (4) so as to form the annular claw pole stator (1). Each segment (3) extends from an inner circumferential surface (5) along a radial direction (6) to an outer circumferential surface (7) and is delimited by a first lateral surface (8) and a second lateral surface (9) in the circumferential direction (4) and by a first end surface (11) and a second end surface (12) in an axial direction (10). Each segment (3) is connected to additional segments (3) via the lateral surfaces (8, 9) in order to form the annular claw pole stator (1), and adjacent segments (3) contact one another via a first contact surface (13) on the first lateral surface (8) or via a second contact surface (14) on the second lateral surface (9) and form a connection (15) which is interlocking in the circumferential direction (4) via the contact surfaces (13, 14).

Stacked core sheets forming a stacked core of a rotating electric machine have tooth portions on the inner circumferential side. Axial-direction holes penetrating the stacked core in the axial direction are provided near the tooth bases and near the outer circumferential surface. Resin is injected through tooth base neighbor holes near the tooth bases and core outer circumferential holes near the outer circumferential surface of the stacked core, among the axial-direction holes in the rotating electric machine. Thus, the resin fills gaps near the tooth bases and near the outer circumferential surface of the stacked core, so that the stacked core sheets are bonded to each other, thus obtaining a rotating electric machine having such a stacked core.

Stacked core sheets forming a stacked core of a rotating electric machine have tooth portions on the inner circumferential side. Axial-direction holes penetrating the stacked core in the axial direction are provided near the tooth bases and near the outer circumferential surface. Resin is injected through tooth base neighbor holes near the tooth bases and core outer circumferential holes near the outer circumferential surface of the stacked core, among the axial-direction holes in the rotating electric machine. Thus, the resin fills gaps near the tooth bases and near the outer circumferential surface of the stacked core, so that the stacked core sheets are bonded to each other, thus obtaining a rotating electric machine having such a stacked core.

A motor includes an annular stator core having a plurality of core segments connected via connecting portions in a circumferential direction about an axis, a cover portion covering the stator core and having a core-surrounding portion surrounding the stator core from an outer side in a radial direction about the axis, and a rotor having a rotor core provided on an inner side of the stator core in the radial direction and a magnet attached to the rotor core. The magnet forms a first magnetic pole, and a part of the rotor core forms a second magnetic pole. A minimum distance R1 in the radial direction from the axis to an outer circumference of the core-surrounding portion and a minimum distance R2 in the radial direction from the axis to an outer circumference of the stator core satisfy R1≥1.15×R2.

A motor includes an annular stator core having a plurality of core segments connected via connecting portions in a circumferential direction about an axis, a cover portion covering the stator core and having a core-surrounding portion surrounding the stator core from an outer side in a radial direction about the axis, and a rotor having a rotor core provided on an inner side of the stator core in the radial direction and a magnet attached to the rotor core. The magnet forms a first magnetic pole, and a part of the rotor core forms a second magnetic pole. A minimum distance R1 in the radial direction from the axis to an outer circumference of the core-surrounding portion and a minimum distance R2 in the radial direction from the axis to an outer circumference of the stator core satisfy R1≥1.15×R2.

A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes an annular core back and a stator core including teeth extending from the core back to one side in the radial direction. The stator core includes a laminated steel sheet in which electromagnetic steel sheets are laminated in a direction of the central axis. Each of the electromagnetic steel sheets includes a caulking dowel portion to which the adjacent electromagnetic steel sheets are connected by press-fitting. The caulking dowel portion includes a protrusion protruding from the core back to another side in the radial direction.

A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes an annular core back and a stator core including teeth extending from the core back to one side in the radial direction. The stator core includes a laminated steel sheet in which electromagnetic steel sheets are laminated in a direction of the central axis. Each of the electromagnetic steel sheets includes a caulking dowel portion to which the adjacent electromagnetic steel sheets are connected by press-fitting. The caulking dowel portion includes a protrusion protruding from the core back to another side in the radial direction.

A method of manufacturing a rotor for a generator of an aircraft engine. The method includes providing a rotor body; mounting at least one magnet on the rotor body; wrapping a tow around the rotor body and the at least one magnet to form a wrapped tow having a plurality of layers overlaid in the radial direction; and curing the wrapped tow to form at least a part of a fibre-reinforced composite sleeve configured to retain the at least one magnet on the rotor body. The step of wrapping includes applying a controlled tension to the tow during wrapping. The controlled tension is varied according to the radial position of the layer being wrapped.

A method of manufacturing a rotor for a generator of an aircraft engine. The method includes providing a rotor body; mounting at least one magnet on the rotor body; wrapping a tow around the rotor body and the at least one magnet to form a wrapped tow having a plurality of layers overlaid in the radial direction; and curing the wrapped tow to form at least a part of a fibre-reinforced composite sleeve configured to retain the at least one magnet on the rotor body. The step of wrapping includes applying a controlled tension to the tow during wrapping. The controlled tension is varied according to the radial position of the layer being wrapped.