An electromechanical rotary actuator includes a stator having teeth extending inwardly from an inner wall surface, wherein free ends of each tooth form an aperture dimensioned for receiving a rotor, the free ends forming a gap therebetween. A segmented set of electrical coils extends around each tooth, wherein each coil of the segmented set has a thickness sufficient for passing through the gap between the first and second teeth. Electrically insulating tabs extend into an opening around each tooth carrying the segmented set of coils. The tabs maintain each of the coils within the segmented set in a spaced relation to the stator. When fabricating the actuator, each of the coils are fabricated and individually placed around a tooth with each coil having a thickness and breadth for optimally packing the stator.

An actuator is provided which comprises an actuator housing having an inside surface defining a stator-receiving portion and a stator. The stator-receiving portion comprises a rotor support element, and plurality of guide projections which are spaced-apart about the rotor support element, the plurality of stator-abutment projections being integrally formed with the inside surface. The stator has a plurality of locator recesses which are engagable with the plurality of stator-abutment projections when the stator is received at the stator-receiving portion of the actuator housing to locate the stator relative to the actuator housing.

A stator, in particular for an electric machine, has a stator pack including a rotor receiving region configured to receive a rotor configured to be driven around a rotation axis within the rotor receiving region, and including at least one stator pole tooth which is surrounded by a coil surrounding a coil central axis and which includes a pole shoe adjacent to the rotor receiving region, wherein the coil central axis is skewed with respect to the rotation axis.

A stator, in particular for an electric machine, has a stator pack including a rotor receiving region configured to receive a rotor configured to be driven around a rotation axis within the rotor receiving region, and including at least one stator pole tooth which is surrounded by a coil surrounding a coil central axis and which includes a pole shoe adjacent to the rotor receiving region, wherein the coil central axis is skewed with respect to the rotation axis.

A stator includes a magnetic plate material that has a main plate surface that is a surface to face a main plate of a movement when assembled to the main plate and that has a rotor accommodating hole formed in a part thereof; and a non-magnetic region that is made non-magnetic by applying chromium on the main plate surface around the rotor accommodating hole and irradiating the chromium with a laser from the main plate surface side.

A stator includes a magnetic plate material that has a main plate surface that is a surface to face a main plate of a movement when assembled to the main plate and that has a rotor accommodating hole formed in a part thereof; and a non-magnetic region that is made non-magnetic by applying chromium on the main plate surface around the rotor accommodating hole and irradiating the chromium with a laser from the main plate surface side.

Disclosed is a doughnut type electromagnetic motor (100) having C-shaped stator windings (1), including C-shaped stator windings, a bearing shaft rod (2), permanent magnets (3), an adjustment circuit board (4), and a flat circular housing (5). The flat circular housing is configured to provide an ultrathin appearance structure for the motor. The permanent magnets serving as rotors are distributed along a second circle parallel to the flat circular housing, and are connected to the bearing shaft rod in the center of the motor by means of connectors, so as to form a permanent magnet rotor structure with the bearing shaft rod as a fulcrum. The C-shaped stator winding serving as a stator is arranged in a transverse direction of the permanent magnet rotor, and the permanent magnet rotor can pass through an inner ring of the C-shaped stator winding during rotating. The structure of the motor is simpler, the torque is increased, and the stator and the rotor can be separately processed and assembled, which makes the production more simplified and the practicability high.

Disclosed is a doughnut type electromagnetic motor (100) having C-shaped stator windings (1), including C-shaped stator windings, a bearing shaft rod (2), permanent magnets (3), an adjustment circuit board (4), and a flat circular housing (5). The flat circular housing is configured to provide an ultrathin appearance structure for the motor. The permanent magnets serving as rotors are distributed along a second circle parallel to the flat circular housing, and are connected to the bearing shaft rod in the center of the motor by means of connectors, so as to form a permanent magnet rotor structure with the bearing shaft rod as a fulcrum. The C-shaped stator winding serving as a stator is arranged in a transverse direction of the permanent magnet rotor, and the permanent magnet rotor can pass through an inner ring of the C-shaped stator winding during rotating. The structure of the motor is simpler, the torque is increased, and the stator and the rotor can be separately processed and assembled, which makes the production more simplified and the practicability high.

A stepping motor includes a stator, a rotor rotatably supported by the stator, and an auxiliary magnetic member. The auxiliary magnetic member has a body, side edge parts at both circumferential ends of the body, and an opening between the side edge parts. The auxiliary magnetic member is elastically mounted around a flange of the stator. The auxiliary magnetic member includes, at one of the side edge parts, a projecting part protruding radially inward from a projected inner circumferential surface of the body across the opening.

A stepping motor includes a stator, a rotor rotatably supported by the stator, and an auxiliary magnetic member. The auxiliary magnetic member has a body, side edge parts at both circumferential ends of the body, and an opening between the side edge parts. The auxiliary magnetic member is elastically mounted around a flange of the stator. The auxiliary magnetic member includes, at one of the side edge parts, a projecting part protruding radially inward from a projected inner circumferential surface of the body across the opening.