A motor with a permanent magnet is provided. A motor has a rotor and an annular drive magnet surrounding the rotor. The drive magnet includes a plurality of magnetized areas having an entire circumference divided into a multiple of at equiangular intervals and includes a plurality of divided areas having an entire circumference divided into the same number as the number of magnetized areas at equiangular intervals. The two adjacent magnetized areas have different polarities. In an inner circumferential surface of each divided area in the drive magnet, a distance D from a rotation center line of the rotor becomes longer from a center in a circumferential direction toward both ends of the area. A magnetization polarization line of the two adjacent magnetized areas deviates from a boundary between the two adjacent divided areas in the circumferential direction.

A motor with a permanent magnet is provided. A motor has a rotor and an annular drive magnet surrounding the rotor. The drive magnet includes a plurality of magnetized areas having an entire circumference divided into a multiple of at equiangular intervals and includes a plurality of divided areas having an entire circumference divided into the same number as the number of magnetized areas at equiangular intervals. The two adjacent magnetized areas have different polarities. In an inner circumferential surface of each divided area in the drive magnet, a distance D from a rotation center line of the rotor becomes longer from a center in a circumferential direction toward both ends of the area. A magnetization polarization line of the two adjacent magnetized areas deviates from a boundary between the two adjacent divided areas in the circumferential direction.

The present invention may provide a motor including a housing coupled to a first bearing, a stator disposed in the housing, a rotor disposed in the stator, and a shaft coupled to the rotor, wherein the housing includes a body and a first pocket formed to be bent from one side of the body toward an inner side of the housing, the first pocket includes an extended part bent from the one side of the body and a first support part bent from the extended part, the first pocket includes a first opening formed by one side of the extended part adjacent to the one side of the body and a second opening formed by the first support part, and a size of the first opening is greater than a size of the second opening.

A motor includes a rotor and a stator including a stator core and a winding including a first extension extending with respect to the stator core toward one side in a rotation-axis direction of the rotor, a second extension extending toward a rotation-radial direction outside of the rotor from an end of the first extension on the one side in the rotation-axis direction, and a third extension extending toward the one side in the rotation-axis direction from an end at the rotor rotation-radial direction outside of the second extension, and connected to a circuit device, and the winding forming a coil around the stator core, and such that an inner bent portion at a boundary between the first and second extensions is disposed at the one side in the rotation-axis direction with respect to an outer bent portion at a boundary between the second and third extensions.

A rotor hub comprises an inside cylindrical portion extending in an axial direction on an inner surface side of a rotor yoke and an outside cylindrical portion extending in the axial direction on an outer surface side of the rotor yoke, a motor gear wheel is integrally moulded on a portion of said outside cylindrical portion, and a rotor unit is assembled with a stator unit in such a way that a fixed shaft is inserted into a cylindrical hole in the rotor hub and a rotor magnet and pole teeth are facing.

This motor includes a stationary portion including a stator; and a rotating portion supported to be rotatable about a central axis extending in a vertical direction with respect to the stationary portion, and including a shaft arranged to extend along the central axis. The stationary portion includes a bearing arranged to rotatably support the shaft, and a base portion arranged to hold the stator. The rotating portion includes a rotor hub portion arranged to extend in an annular shape around the shaft; a magnet directly or indirectly fixed to the rotor hub portion, and arranged opposite to the stator; a flywheel arranged axially above the rotor hub portion; and a seal portion arranged to have a thickness smaller than the thickness of the magnet. At least a portion of an outer circumferential surface of the rotor hub portion is a metal surface. The metal surface has a reflectivity higher than the reflectivity of an outer circumferential surface of the flywheel and the reflectivity of a surface of the seal portion. The metal surface is covered with the seal portion.

A motor unit includes a stator including a coil formed from a wound winding that is configured by a conductive member including an insulating covering layer on the surface of the conductive member, a rotor that rotates under the influence of a rotating magnetic field generated by the stator, and a centerpiece that supports the stator and is formed with a centerpiece-side winding insertion hole through which the winding is inserted. The motor unit also includes a circuit device and a potting section. The potting section is formed using potting material, and seals a gap formed between the centerpiece-side winding insertion hole and the winding by achieving a state in which a portion of the potting section is closely adhered to the covering layer of the winding.

An modular apparatus for generating electrical power in a borehole penetrating the earth includes a body comprising first and second mechanical connectors at opposing ends and first and second electrical connectors at the opposing ends, the mechanical connectors and the electrical connectors being configured to connect with the same type of corresponding connectors on another modular apparatus when the modular apparatus and the another modular apparatus are stacked together. The modular apparatus further includes: an electrical generator having a rotor and stator in mechanical communication with the first and second mechanical connectors and in electrical communication with the first and second electrical connectors; and a turbine wheel coupled to or integrated with the rotor and comprising one or more turbine blades that are configured to interact with fluid flowing through the borehole causing the turbine wheel to rotate and the rotor to rotate in order to generate the electrical power.

A compressor arrangement for operating a compressed air supply installation includes a pneumatic compressor and an electric motor arranged inside a drive housing, the electric motor having an internal stator and an external outer rotor. The external outer rotor is arranged in a rotatable manner about the internal stator. The external outer rotor is supported in a rotatable manner about a center axis with respect to the drive housing via a bearing arrangement. The bearing arrangement has at least one bearing. The external outer rotor is supported by the bearing arrangement on an outer circumference of the outer rotor.

Provided is a motor including a shaft welded to or fused with a metallic member. The motor includes a shaft (5) made of metal and a base including a metal board (81) covered with a coating layer (83). The coating layer (83) has an opening (83b), and the metal board (81) includes a recessed part (84) exposed through the opening (83b). An outer peripheral part of the shaft (5) and the recessed part (84) are fused or welded together.