A movable magnet is configured by alternately magnetizing an even number of magnetic poles at an outer periphery of a shaft part; a number of core magnetic poles as magnetic poles of a core body and a number of magnetic poles of the movable magnet are equal to each other; the core magnetic poles are disposed to face the movable magnet with an air gap therebetween on an outer peripheral side of the movable magnet in a direction orthogonal to the shaft part; a drive unit is provided with a magnet position holding part provided to face the movable magnet and magnetically attracts the movable magnet to a reference position; the core body is formed to surround an even number of the core magnetic poles; and a coil body is disposed at the core body adjacent to each of the even number of the core magnetic poles.

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.

A rotary reciprocating drive actuator reciprocally and rotationally driving the movable body about the shaft part in relation to the fixed body by the electromagnetic mutual effect of the coil and the movable magnet, wherein the movable magnet is magnetized in the radial direction of the shaft part, the two magnetic poles are disposed facing each other across an air gap in the radial direction of the movable magnet and the shaft part, and the fixed body has a rotation-angle-holding part disposed facing the movable magnet across the air gap, the rotation-angle-holding part holding the rotation angle position of the movable magnet by the magnetic attraction force generated with the movable magnet.

The present disclosure relates to an actuator. The actuator includes at least two iron cores, each iron core including a pole extending in a first direction parallel to a direction of gravity; a permanent magnet disposed between the at least two iron cores so as to generate a magnetic field along a shape of a combination of the at least two iron cores arranged so as to be adjacent to each other in a direction not parallel to the first direction; and a winding wound around the pole of each of the at least two iron cores.

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 stator assembly for use in an axial flux electric motor includes at least one tooth tip and at least one stator tooth coupled to the at least one tooth tip, wherein the at least one stator tooth includes an insertable portion. The stator assembly also includes at least one stator base including at least one receiving slot configured to receive the insertable portion to form a mechanical joint between the at least one stator base and the at least one stator tooth.

Electrical windings for a low-pressure environment are provided. The electrical windings include a body having an aperture and electrical conductors wound about the aperture in the body; a conductive layer at the body, the conductive layer arranged to electrically shield the electrical conductors; electrical connectors at one or more external sides of the body, the electrical connectors electrically connected to the electrical conductors; an insulating housing containing electrical connections between the electrical connectors and the electrical conductors; a conducting faceplate at the insulating housing, grounding portions of the electrical connectors attached to the conducting faceplate; and a conductive coating on the insulating housing, the conductive coating electrically connected to the conducting faceplate and the conductive layer.

A motor module includes a stator formed of a main plate of a first thickness on which is mounted a rotor The stator has at each end a receiving zone, the thickness of which is less than the first thickness.

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.