A rotary reciprocating drive actuator includes: a movable body including a shaft portion and a magnet fixed to the shaft portion; a fixing body including a core assembly, the core assembly including a core body and coils, the core body having magnetic poles, the core assembly being disposed such that the magnetic poles face an outer periphery of the magnet; and a pair of shaft supports configured to sandwich the core assembly in an extending direction of extension of the shaft portion and support the shaft portion at opposite sides of the core assembly such that the shaft portion is rotatable, in which a magnetic flux passing through the core body is generated by energization of the coils, causing reciprocating rotation of the movable body about an axis of the shaft portion by electromagnetic interaction between the magnetic flux and the magnet.

A DC generator without reversing, belonging to the electromechanical field. The main elements are: ring-shaped magnets of which the magnetic field direction is perpendicular to the ring surfaces or along the radial direction of the ring surfaces, a magnetic conductive plate or magnetic conductive tube which is made of high permeability magnetic material, provided with holes through which a conducting wire can pass, has a surface completely insulated from the rest part, and has high resistance or is insulated, a conducting wire coil provided with an insulation layer on the surface and twined around the conducting wire frame through the holes of the magnetic conductive plate, and drive wheels at the same angular velocity; the conducting wire, and the magnetic conductive plate or magnetic conductive tube are installed between the magnets or one the end surfaces, and the two ends of the conducting wire are directly connected to the wiring posts or are connected by an electric brush; driven by power, the magnets and the conducting wire perform relative motion which makes the conducting wire cut magnetic lines of force, and DC electromotive force is generated; or the magnetic conductive plate or magnetic conductive tube is not used, but two groups of serial conducting wires or conducting strips move in opposite directions or perform relative motion of cutting the magnetic line of force between the magnets having opposite magnetic field directions. Such generator generates DC electromotive force without reversing; and has simple structure, low cost and long life.

A rotor core includes: an annular part around a through hole; a plurality of fan-shaped magnetic pole pieces radially formed around the annular part; and a plurality of magnet holders radially formed between adjacent magnetic pole pieces, and a plurality of first magnetic flux blocking parts formed in respective areas between adjacent magnet holders. The magnet holder includes a second magnetic flux blocking part at an end of the magnetic holder toward the rotating shaft. The rotor core includes two magnetic paths formed between the first magnetic flux blocking part and the two second magnetic flux blocking parts adjacent to the first magnetic flux blocking part. The two magnetic paths branch in different directions toward the annular part from the end of the magnetic pole piece toward the rotating shaft.

A DC generator without reversing, belonging to the electromechanical field. The main elements are: ring-shaped magnets of which the magnetic field direction is perpendicular to the ring surfaces or along the radial direction of the ring surfaces, a magnetic conductive plate or magnetic conductive tube which is made of high permeability magnetic material, provided with holes through which a conducting wire can pass, has a surface completely insulated from the rest part, and has high resistance or is insulated, a conducting wire coil provided with an insulation layer on the surface and twined around the conducting wire frame through the holes of the magnetic conductive plate, and drive wheels at the same angular velocity; the conducting wire, and the magnetic conductive plate or magnetic conductive tube are installed between the magnets or one the end surfaces, and the two ends of the conducting wire are directly connected to the wiring posts or are connected by an electric brush; driven by power, the magnets and the conducting wire perform relative motion which makes the conducting wire cut magnetic lines of force, and DC electromotive force is generated; or the magnetic conductive plate or magnetic conductive tube is not used, but two groups of serial conducting wires or conducting strips move in opposite directions or perform relative motion of cutting the magnetic line of force between the magnets having opposite magnetic field directions. Such generator generates DC electromotive force without reversing; and has simple structure, low cost and long life.

A rotary reciprocating drive actuator includes: a movable body including a shaft portion and a magnet fixed to the shaft portion; a fixing body including a core assembly, the core assembly including a core body and coils, the core body having magnetic poles, the core assembly being disposed such that the magnetic poles face an outer periphery of the magnet; and a pair of shaft supports configured to sandwich the core assembly in an extending direction of extension of the shaft portion and support the shaft portion at opposite sides of the core assembly such that the shaft portion is rotatable, in which a magnetic flux passing through the core body is generated by energization of the coils, causing reciprocating rotation of the movable body about an axis of the shaft portion by electromagnetic interaction between the magnetic flux and the magnet.