A single phase permanent magnet motor includes a stator core, windings wound around the stator core, and a permanent magnet rotor. The stator core includes an end portion and two spaced arm portions. Each arm portion includes a connecting arm connected to the end portion and a pole claw formed at a distal end of the connecting arm. The two pole claws define a space for receiving the rotor. The pole claws surround the space and form an arc pole surface. The arc pole surface is recessed to form a startup groove located at a central axis of the pole claw. The two pole claws are spaced apart to form two slot openings there between. A line connecting the two slot openings is orthogonal to the central axis of the pole claw.

The present invention provides a single phase permanent magnet motor including a stator core and a permanent magnet rotor. The stator core includes an end portion and two arm portions extending from the end portion. Each arm portion includes a connecting arm connected to the end portion and a pole claw formed at a distal end of the connecting arm. The two pole claws defines a receiving space. The rotor is rotatably disposed in the receiving space of the stator core. The rotor includes a rotor core made of a magnetic material and at least one permanent magnet attached to the rotor core.

A single phase permanent magnet motor includes a stator core and a permanent magnet rotor rotatably disposed in the stator core. The stator core includes an end portion and a pole arm extending from the end portion. The pole arm includes two connecting arms connected to the end portion and two pole claws formed at distal ends of the connecting arms. The permanent magnet rotor is disposed between the two pole claws. The rotor comprises a rotor core and a plurality of permanent magnets embedded in the rotor core, and the rotor core is made of a magnetic material.

A single phase motor and an electrical device are provided. The single phase motor includes a stator and a rotor. The stator includes a stator core and a winding wound around the stator core. The stator core includes a yoke and two opposed pole portions. Each pole portion includes short and long pole shoes. The rotor is received in a space defined by the short and long pole shoes of the two pole portions. The short pole shoe of each pole portion and the long pole shoe of the opposite pole portion are located adjacent to each other and define a slot opening therebetween. Each pole portion includes the short pole shoe and long pole shoe, which provides the motor with different startup capabilities along the clockwise and counter-clockwise directions.

A stator core that includes a pair of poles separated by an air gap. Each pole includes a first side adjacent the air gap and a second opposite side remote from the air gap. A pole arc is formed in the first side and an arcuate mounting recess is formed in the second side of each pole. Additionally, an electric machine that includes the stator core.

A brushless motor comprising: a rotor; a stator; a position detector; and a controller, wherein the stator includes: a stator core; an insulation body; a wire of which one end side is wound on one winding target portion and the other end side is wound on the other winding target portion to form one and the other coils generating magnetic poles having different polarities in the one and the other magnetic pole portions of the stator core and of which both end portions are respectively held by a holding portion and an intermediate portion of the one and the other coils is held by an intermediate holding portion; an intermediate terminal which is attached to the intermediate holding portion to be electrically connected to the wire; and a terminal portion which is attached to the holding portion to be electrically connected to both end portions of the wire.

Various embodiments disclosed herein relate to a system and method whereby a haptic feedback mechanism may be integrated into a rotatable gear module such that rotating the module may generate pure mechanical haptic feedback. The gear module may be integrated into a wearable device, such as headphones, such that a set of magnets incorporated within may be aligned and misaligned with a plurality of teeth when the gear module rotates. In response to the rotation, each alignment and misalignment of the set of magnets with the plurality of teeth may generate pure haptic feedback. In embodiments, the gear module may be rotated to increment or decrement a unit of measurement associated with the headphones. Each unit of increment or decrement of change may produce haptic feedback based on the alignment and misalignment of the set of magnets.