Abstract: A magnetic circuit for a non-contact charging apparatus comprising a coil, a coil yoke disposed on the rear surface side of the coil, and a magnetic attraction means disposed in a hole of the coil yoke with a magnetic gap in plane and/or thickness directions.

Abstract: The magnetic iron core includes an amorphous foil strip wound to form the magnetic iron core. Preferably, the magnetic iron core is filled with resin, the resin being disposed by using a spacer between pluralities of windings of the amorphous foil strip. Preferably, the magnetic iron core is covered with resin integrated with and continuous to the resin disposed between pluralities of windings of the amorphous foil strip.

Abstract: In the axial gap rotating electrical machine, the rotor includes a rotor yoke that is formed by wrapping amorphous ribbon wound toroidal core, which is obtained by winding an amorphous magnetic metal ribbon into a toroidal core. Magnets having plural poles are circumferentially disposed on a stator-facing surface of the amorphous ribbon wound toroidal core.

Abstract: When an axial gap rotating electrical machine is assembled, stator cores are accurately positioned and a manufacturing process therefor is simplified. The axial gap rotating electrical machine comprises: a housing frame body having a first space in the cylindrical central part thereof and multiple second spaces located in the circumferential direction which have the same distances from the center; a shaft rotatably provided in the first space in the housing frame body; a core placed in each of the second spaces in the housing frame body and a coil arranged around the core; a rotor yoke fixed on the shaft, extended in the direction of the circumference thereof, and having multiple magnets arranged in circumferential positions confronting the cores; and a case having a hole for the shaft and housing the housing frame body and the rotor yoke.

Abstract: An armature core includes a core portion formed of a lamination of plural non-crystalline metallic foil bands, wherein the armature core is provided with at least two cut surfaces with respect to the lamination layers. Amorphous metal is used as the iron base of the non-crystalline metallic foil bands. The cut surfaces are perpendicular to the lamination layers of the non-crystalline foil bands. Still further, the stator includes a stator core holding member in a disc form, the stator having a plurality of holes or recessions that are substantially in the same shape as a cross-sectional shape of the stator cores and wherein the stator cores are inserted in the holes or recessions of the stator core holding member and held by fixing in vicinities of respective central portions thereof, the central portions being with respect to the axial direction thereof.

Abstract: An axial gap motor includes a stator having stator teeth, and also includes a rotor opposed to the stator with a gap in an axial direction of the stator. Each of the stator teeth includes a stator tooth body, a stator tooth end joined to at least one axial-direction end of the stator tooth body, and a stator coil disposed around the stator tooth body. The stator tooth body includes a wound core comprised of a multi-layered amorphous foil strip winding. The stator tooth end is formed by a compact including a powder magnetic core, and the stator tooth end includes a surface opposed to the rotor. A cross-sectional area of the stator tooth end perpendicular to an axis of the amorphous foil strip winding is larger than a cross-sectional area of the stator tooth body perpendicular to the axis of the amorphous foil strip winding.

Abstract: A magnetic circuit for a non-contact charging apparatus comprising a coil, a coil yoke disposed on the rear surface side of the coil, and a magnetic attraction means disposed in a hole of the coil yoke with a magnetic gap in plane and/or thickness directions.

Abstract: Disclosed are: a magnetic shielding material having excellent magnetic shielding property at a low magnetic field; and a magnetic shielding component and a magnetic shielding room each using the magnetic shielding material. Specifically disclosed is a magnetic shielding material comprising the following components (by mass): Ni: 70.0-85.0%, Cu: 0.6% or less, Mo: 10.0% or less and Mn: 2.0% or less, with the remainder being substantially Fe. The magnetic shielding material has a relative magnetic permeability of 40,000 or more under a magnetic field of 0.05 A/m and a squareness ratio (Br/B0.8) of 0.85 or less, wherein the squareness ratio (Br/B0.8) is a ratio of a remanent magnetic flux density (Br) to a maximum magnetic flux density (B0.8) in a DC hysteresis curve produced under the maximum magnetic field of 0.8 A/m.

Abstract: When an axial gap rotating electrical machine is assembled, stator cores are accurately positioned and a manufacturing process therefor is simplified. The axial gap rotating electrical machine is comprised of: a housing frame body having a first space in the cylindrical central part thereof and multiple second spaces located in the circumferential direction which have the same distances from the center; a shaft rotatably provided in the first space in the housing frame body; a core placed in each of the second spaces in the housing frame body and a coil arranged outside of the core; a rotor yoke fixed on the shaft, extended in the direction of the circumference thereof, and having multiple magnets arranged in circumferential positions confront the cores; and a case having a hole for the shaft and housing the housing frame body and the rotor yoke.

Abstract: In the axial gap rotating electrical machine, the rotor includes a rotor yoke that is formed by wrapping amorphous ribbon wound toroidal core, which is obtained by winding an amorphous magnetic metal ribbon into a toroidal core. Magnets having plural poles are circumferentially disposed on a stator-facing surface of the amorphous ribbon wound toroidal core.

Abstract: The invention provides a high-quality magnetic iron core by concurrently satisfying requirements for enhancement in strength of a wound iron core, particularly, strength of a wound iron core made up of amorphous foil strips, reduction in manufacturing time, and manufacturing cost. The invention also provides an electromagnetic application product highly efficient and small in size as an application of the magnetic iron core. The magnetic iron core includes an amorphous foil strip being wound to form the magnetic iron core. The magnetic iron core is filled with resin, the resin being disposed in every plural turns of windings of the amorphous foil strip. Preferably, the magnetic iron core is filled with the resin, the resin being disposed by using a spacer in every plural turns of windings of the amorphous foil strip. Preferably, the magnetic iron core is covered with resin which is integrated with and continuous to the resin disposed in every plural turns of windings of the amorphous foil strip.

Abstract: The present invention provides a low-iron-loss (high-efficiency) and low-cost axial gap motor that includes a high-quality soft magnetic material placed at an appropriate position, reduces torque pulsation, keeps induced voltage in the shape of a sine wave, and increases the degree of freedom in design. The axial gap motor includes a stator having stator teeth; and a rotor being opposed to the stator with a gap in an axial direction of the stator. Each of the stator teeth includes a stator tooth body, a stator tooth end joined to at least one axial-direction end of the stator tooth body, and a stator coil disposed around the stator tooth body. The stator tooth body includes a wound core comprised of a multi-layered amorphous foil strip winding. The stator tooth end is formed by a compact made of a powder magnetic core, and includes an opposed surface to the rotor.

Abstract: An armature core includes a core portion formed of a lamination of plural noncrystalline metallic foil bands and resin for bond-fixing the non-crystalline metallic foil bands, wherein the armature core is provided with at least two cut surfaces with respect to the lamination layers. Amorphous metal is used as the iron base of the non-crystalline metallic foil bands. The cut surfaces are perpendicular to the lamination-layers of the non-crystalline foil bands. For the amorphous core, a resin mold is formed. The contact portions between winding wires and amorphous are provided with edge roundness. Further, an axial gap motor using cut cores of amorphous lamination as stator cores is provided.

Abstract: Disclosed are: a magnetic shielding material having excellent magnetic shielding property at a low magnetic field; and a magnetic shielding component and a magnetic shielding room each using the magnetic shielding material. Specifically disclosed is a magnetic shielding material comprising the following components (by mass): Ni: 70.0-85.0%, Cu: 0.6% or less, Mo: 10.0% or less and Mn: 2.0% or less, with the remainder being substantially Fe. The magnetic shielding material has a relative magnetic permeability of 40,000 or more under a magnetic field of 0.05 A/m and a squareness ratio (Br/B0.8) of 0.85 or less, wherein the squareness ratio (Br/B0.8) is a ratio of a remanent magnetic flux density (Br) to a maximum magnetic flux density (B0.8) in a DC hysteresis curve produced under the maximum magnetic field of 0.8 A/m.

Abstract: A magneto resistive sensor having a GMR magnetic laminated film is disclosed. The GMR magnetic laminated film comprises a plurality of magnetic thin layers having a NiCoFeB composition alternately laminated with a nonmagnetic thin layer, such as copper layer. Since the magnetic thin layer contains B in its composition, the GMR magnetic laminated film can stand in magneto resistance ratio (&Dgr;R/R %) under a high temperature of up to 250 degrees centigrade. By the reason, electric wiring can be connected by a lead-free solder to assemble a magnetic resistive sensor for a magnetic rotary encoder. The thermal resistance variation and the magneto resistance ratio are further improved when a NiFeCr underlayer is used under the GMR magnetic laminated film.

Abstract: To provide a bearing sensor having a thin plane coil for applying a biasing magnetic field and at least one magneto resistive element pair (a first magneto resistive thin plate and a second magneto resistive thin plate) crossing opposed conductor sides of the coil. The plane coil has at least one pair of opposed conductor sides (a first side and a second side). The first magneto resistive thin plate and the first side cross one another at an angle more than 30 degrees and less than 90 degrees. The second magneto resistive thin plate and the second side cross one another at an angle more than 30 degrees and less than 90 degrees. While biasing magnetic fields in opposite directions are applied to the magneto resistive thin plates, respectively, intermediate potentials of the magneto resistive element pair are measured to determine bearings based on the difference between the intermediate potentials.

Abstract: A magneto resistive sensor having a GMR magnetic laminated film is disclosed. The GMR magnetic laminated film comprises a plurality of magnetic thin layers having a NiCoFeB composition alternately laminated with a nonmagnetic thin layer, such as copper layer. Since the magnetic thin layer contains B in its composition, the GMR magnetic laminated film can stand in magneto resistance ratio (&Dgr;R/R %) under a high temperature of up to 250 degrees centigrade. By the reason, electric wiring can be connected by a lead-free solder to assemble a magnetic resistive sensor for a magnetic rotary encoder. The thermal resistance variation and the magneto resistance ratio are further improved when a NiFeCr underlayer is used under the GMR magnetic laminated film.