Patent application number | Description | Published |
20130119980 | MAGNETIC SENSOR DEVICE - By providing a first magnet and a second magnet on wall surfaces of a hollow section where paper money is conveyed such that different magnetic poles face each other, a gradient magnetic field is formed wherein both a magnetic field component in an opposing direction to the magnets and a magnetic field component in a conveyance direction of the paper money include a zero point. An AMR element is provided between the paper money and the first magnet. The AMR element is enclosed by a multi-layered substrate and covered with resin. The AMR element is provided in an area where the magnetic field intensity is weak, which is where the magnetic field intensity in the gradient magnetic field in the conveyance direction is near zero. The paper money passes through an area where the magnetic field intensity of the gradient magnetic field is strong. | 05-16-2013 |
20150015245 | MULTI-ROTATION ENCODER - A battery-less multi-rotation encoder including detection coils with the Barkhausen effect includes a rotation detection mechanism and a signal processing circuit. The detection coils generate voltage pulses with different positive and negative signs, and transmit them to the signal processing circuit, and the signal processing circuit includes a controller and an adder. The controller can set states of the detection coils to be High or Low and to maintain them at High or Low, based on the positive and negative signs of the respective voltage pulses and no voltage pulse being generated therefrom. The controller is configured to store the states of the respective detection coils in a memory. The adder can update a number of rotations according to the changes in the states of the respective detection coils. The signal processing circuit can determine the rotational angle of a rotational shaft within about 1/4 rotation unit. | 01-15-2015 |
20150054499 | MAGNETIC ROTATION-ANGLE DETECTOR - Provided is a magnetic rotation-angle detector that includes a disk-shaped magnet that is magnetized so as to change magnetic poles n times per rotation (where n is an integer equal to or larger than 1); a magnetic-body slit plate that is rotated together with the magnet, where a part having a high magnetic flux permeability and a part having a low magnetic flux permeability are alternately and repeatedly arranged thereon so as to change the magnetic flux permeability m times per rotation (where m is an integer equal to or larger than 2 and m>n); a magnetic sensor that detects magnetism from the magnet when the magnet has passed by through the magnetic-body slit plate; and a calculation unit that obtains the rotation angle of the magnet from the output from the magnetic sensor. | 02-26-2015 |
20150344266 | ELEVATOR CAR POSITION DETECTION DEVICE - In an elevator car position detection device, a magnetic field generator generates an eddy current magnetic field on an identification member, and a magnetic field detector detects the eddy current magnetic field generated on the identification member. The identification member includes a plurality of conductors which are continuously arranged along an ascending and descending direction of a car, and are relatively different in a plate thickness with respect to a skin depth of an eddy current generated by the magnetic field generator on the identification member. A shape of at least a part of a boundary between the adjacent conductors is a straight line or a curve tilted with respect to a direction orthogonal to the ascending and descending direction of the car. | 12-03-2015 |
Patent application number | Description | Published |
20080238242 | DYNAMOELECTRIC MACHINE - The dynamoelectric machine includes: a Lundell rotor that has: a pole core in which tapered claw-shaped magnetic pole portions are arranged in rows circumferentially so as to extend axially alternately from two axial ends and intermesh with each other; and a field coil that is mounted to the pole core; and a stator that has: a cylindrical stator core that surrounds the rotor so as to have a predetermined air gap; and a stator coil that is mounted to the stator core. The stator core is prepared by laminating and integrating dull finish magnetic steel plates, and a space factor of an iron portion in the stator core is in a range of 96 percent plus or minus 0.5 percent. | 10-02-2008 |
20100289459 | POWER SUPPLY DEVICE - Provided is a power supply device including: a magneto generator ( | 11-18-2010 |
20120267969 | EXTERNAL COVER-COOLED ROTARY ELECTRIC MACHINE AND CASING USED THEREIN - A center frame is fastened to a first bracket and a second bracket such that a first mated protrusion and a second mated protrusion are fitted together with a first mated recess portion and a second mated recess portion so as to be mated. O rings are disposed annularly so as to be held between an end surface of the first bracket and a first axial end surface of the center frame, and between an end surface of the second bracket and a second axial end surface of the center frame on an opposite side from outer circumferential inner wall surfaces of the first mated recess portion and the second mated recess portion. | 10-25-2012 |
20120267975 | EMBEDDED PERMANENT MAGNET ELECTRIC MOTOR - The embedded permanent magnet electric motor includes: a rotor having: a rotor core that has an outer circumferential surface that is constituted by a plurality of convex surfaces that are circular arc-shaped curved surfaces that are arranged continuously at a uniform angular pitch circumferentially; and a plurality of permanent magnets that are embedded in the rotor core so as to be positioned on a radially inner side of each of the circular arc-shaped curved surfaces; and a stator having: a stator core in which teeth are respectively disposed so as to extend radially inward from an annular core back and are arranged at a uniform angular pitch circumferentially to configure open slots; and a stator coil that is constituted by a plurality of concentrated winding coils that are wound into concentrated windings on each of the teeth. | 10-25-2012 |
20120286619 | ROTARY ELECTRIC MACHINE AND METHOD FOR MANUFACTURING STATOR USED THEREIN - The rotary electric machine includes a rotor, and a stator including an stator core that is formed by laminating and integrating magnetic steel plates, and concentrated winding coils that are mounted to respective teeth, the stator being disposed so as to surround the rotor. Bobbins each including a trunk portion and first and second guide portions that are disposed so as to protrude from two longitudinal ends of an upper surface of the trunk portion are disposed so as to place bottom surfaces of the trunk portions alongside two axial end surfaces of the teeth. The concentrated winding coils are configured by winding a conductor wire a predetermined number of times around the teeth so as to pass through a concave space that is formed by the trunk portions and the first and second guide portions at two axial ends of the teeth. | 11-15-2012 |
20120299410 | ROTARY ELECTRIC MACHINE - The concentrated winding coil is mounted onto a tooth such that a coil end portion is housed inside a concave space that is formed by the trunk portion and first and second guide portions at two axial ends of the tooth. Third cover portions of an insulating sheet that is disposed on two circumferential sides of the tooth are folded over so as to overlap with each other and extend so as to cover the coil end portion of the concentrated winding coil, and a second leader line that projects outward from a radially inner end portion of the concentrated winding coil is bent and led radially outward parallel to the coil end portion that is covered by the third cover portions. | 11-29-2012 |
20130093273 | ROTARY ELECTRIC MACHINE - A rotary electric machine includes a rotor, a stator having coils wound to surround the rotor, a cylindrical ring member fixedly mounted on the stator by shrinkage fitting, and a frame disposed on the outside of the ring member with a gap created in between. The distance of the gap varies as a result of thermal expansion of the stator and the ring member. An outer surface of the ring member goes into contact with the frame when the stator and the ring member thermally expand, whereby the stator and the ring member are efficiently cooled. | 04-18-2013 |
20140091663 | PERMANENT-MAGNET TYPE ROTATING ELECTRICAL MACHINE - Magnet insertion holes for embedding a plurality of permanent magnets per pole are formed in a rotor core in a protruding shape toward a center of a rotor. A pair of flux control holes formed in a symmetrical shape with respect to a center line between magnetic poles is provided for each magnetic pole in a magnetic pole gap of the rotor core. Where d is a diameter of the respective flux control holes, m is a center-to-center distance thereof, b is a width of the magnetic pole gap, and τ is a pole pitch between magnetic poles, the flux control holes are provided so that a value of m/T obtained by standardizing the center-to-center distance m by the pole pitch τ satisfies | 04-03-2014 |
20140346913 | LUNDELL ROTARY MACHINE - A rotor includes: a plurality of first magnetic pole members that are disposed such that first end portions and second end portions are respectively coupled magnetically and mechanically to a first magnetic end plate and to a second magnetic end plate and so as to be separated from a magnetic intermediate plate magnetically; a plurality of second magnetic pole members that are disposed such that intermediate portions are coupled magnetically and mechanically to the magnetic intermediate plate and so as to be separated from each of the magnetic end plates magnetically; a plurality of permanent magnets that are disposed between the first and second magnetic pole members in a circumferential direction; and a nonmagnetic holding body for separating the first magnetic pole members magnetically from the magnetic intermediate plate, and for separating the second magnetic pole members magnetically from the magnetic end plates. | 11-27-2014 |
20140354204 | CONTROL DEVICE AND CONTROL METHOD FOR PERMANENT MAGNET MOTOR - A control device for a permanent magnet motor, including: a rotor position detector configured to detect a rotating speed of a rotor of a permanent magnet motor in a state in which the permanent magnet motor is disconnected from a load by a clutch and rotates without power supply; a magnet temperature estimator configured to estimate a magnet temperature of the permanent magnet motor based on the detected rotating speed; a current compensator configured to determine a compensation amount for compensating for a current command to the permanent magnet motor based on the estimated magnet temperature; and a drive control device configured to control a power converter for driving the permanent magnet motor based on the compensation amount. | 12-04-2014 |
20150076940 | ROTARY ELECTRIC MACHINE - The rotary electric machine includes: a stator that includes: a stator core; and a stator coil; a ring member that accommodates the stator so as to hold the stator core in an internally fitted state; a housing case formed into a floored cylindrical shape with an opening at a first end portion, and that accommodates the ring member and the stator; and a cover mounted onto the first end portion of the housing case so as to cover the opening of the housing case, wherein a first end portion of each of the ring member and the housing case is fixed by fastening to the cover such that a fastening direction of each is oriented in an axial direction, and a second end portion of the ring member is fitted into and held by the housing case by means of an interfitting member. | 03-19-2015 |
20150084462 | ROTOR STRUCTURE OF ROTARY ELECTRIC MACHINE - Provided is a rotor structure of a rotary electric machine, which is easily adaptable to offer a wide variety of products. The rotor structure of a rotary electric machine includes at least: a rotor shaft ( | 03-26-2015 |
20150091407 | EMBEDDED PERMANENT MAGNET ROTARY ELECTRIC MACHINE - Permanent magnets that constitute the single magnetic poles are constituted by n permanent magnet segments, the n permanent magnet segments being configured such that shapes and directions of orientation thereof have mirror symmetry relative to a plane that passes through a magnetic pole center and that includes a central axis of the rotor core, and being oriented such that a permanent magnet segment that is further away from the magnetic pole center in a circumferential direction has a smaller angle of orientation, and the permanent magnet segment that is positioned further away from the magnetic pole center in the circumferential direction being produced so as to have an approximately fan-shaped cross-sectional shape in which a radial width is wider than a circumferential width. | 04-02-2015 |
20150115751 | PERMANENT MAGNET EMBEDDED ROTARY ELECTRIC MACHINE - A permanent magnet embedded. rotary electric machine includes: permanent magnets | 04-30-2015 |
20150155760 | ROTARY ELECTRIC MACHINE, ROTARY ELECTRIC MACHINE STATOR, AND ROTARY ELECTRIC MACHINE STATOR MANUFACTURING METHOD - An insulator includes: a trunk portion that is interposed between a tooth and a stator coil; and a first flange portion that is disposed on the trunk portion so as to be adjacent to the stator coil in a radial direction of a stator core. A notch portion is disposed on a flange protruding portion of the first flange portion that protrudes from the stator core in the axial direction of the stator core from an outer circumferential portion of the flange protruding portion toward the trunk portion. A holder that has a holder main body that is disposed on the notch portion is mounted onto the flange protruding portion. A temperature sensor is held between the holder main body and the stator coil. | 06-04-2015 |
20150162787 | ROTARY ELECTRIC MACHINE AND MANUFACTURING METHOD THEREFOR - A stator winding is formed by mounting winding bodies individually into pairs of slots of a stator core separated by a predetermined number of slots, the winding bodies each being formed by winding a jointless, continuous conductor wire coated with insulation for m turns into a helical shape such that end portions of rectilinear portions are linked by coil ends, where m is a natural number that is greater than or equal to two, and the coil ends include a top portion that displaces by a predetermined amount in a radial direction at an approximately central portion between the linked rectilinear portions, the radial displacement at the top portions is approximately a×d, where a is a natural number that is greater than or equal to 1 and less than or equal to (m−1), and d is a radial thickness of the rectilinear portions. | 06-11-2015 |
20150162790 | ROTATING ELECTRIC MACHINE - A rotating electric machine includes a rotor including: a rotor core divided into blocks in an axial direction, the blocks being arranged to have a phase angle therebetween in a circumferential direction, the rotor core having magnet through holes arrayed in the circumferential direction and formed in an outer circumferential region; and permanent magnets inserted into the magnet through holes. The magnet through hole includes: a magnet insertion portion into which the permanent magnet is inserted; and a non-magnetic portion provided on an outer side of the magnet insertion portion in the circumferential direction. A bridge portion is formed between the outer circumferential surface and an outer circumferential inner wall of the non-magnetic portion. A bridge angle, which is an angle between both circumferential ends of the bridge portion with a rotation center of the rotor core set as a vertex, is larger than a skew angle. | 06-11-2015 |
20150162796 | STATOR AND ROTATING ELECTRICAL MACHINE EQUIPPED WITH THE SAME | 06-11-2015 |
20150200575 | ROTARY ELECTRIC MACHINE - A U-phase coil that constitutes an armature winding includes four (first through fourth) small coil groups U | 07-16-2015 |
20150207374 | ROTARY ELECTRIC MACHINE - A U-phase coil that constitutes the armature winding includes four (first through fourth) small coil groups U | 07-23-2015 |
20150249372 | ELECTRIC MACHINE - In the electric machine according to the present invention, conductor wires are housed inside slots so as to be arranged into multiple layers in one column so as to contact each other in a slot depth direction in each column such that a longitudinal direction of a long side of an oblong cross section of a conductor portion faces in the slot depth direction, and a thickness of a portion of an insulating coating that is formed on a surface of the conductor portion that faces in the slot depth direction is thinner than a thickness of a portion of the insulating coating that is formed on a surface of the conductor portion that faces in a direction of slot arrangement. | 09-03-2015 |
20150288262 | METHOD FOR MANUFACTURING A WINDING BODY THAT IS USED IN AN ARMATURE WINDING FOR AN ELECTRIC MACHINE - A method for manufacturing a winding body includes: a bulging portion forming step in which bulging portions are formed by bending at a set pitch on a conductor wire; a crank portion forming step in which the crank portions are formed by bending on central portions of the bulging portions; an inclined portion and rectilinear portion forming step in which inclined portions and rectilinear portions are formed by bending on the conductor wire on which the bulging portions are formed at a set pitch and on which the crank portions are formed on each of the bulging portions after completion of the bulging portion forming step and the crank portion forming step; and a circular arc portion forming step in which the inclined portions are bent and formed into a circular arc shape. | 10-08-2015 |
20150357870 | ROTOR AND ROTARY ELECTRIC MACHINE THAT INCLUDES THAT ROTOR - Permanent magnets that form individual magnetic poles are configured by arranging three magnet blocks to be spaced apart from each other circumferentially, the three magnet blocks are each formed such that cross-sectional shapes that are perpendicular to a central axis of a rotor core are radially outwardly convex, and circumferential widths are narrower in magnet blocks that are further away from a magnetic pole center, and the three magnet blocks that are arranged circumferentially are formed to have mirror symmetry relative to a plane that passes through the magnetic pole center and the central axis of the rotor core. | 12-10-2015 |
Patent application number | Description | Published |
20130004360 | FERRITIC STAINLESS STEEL SHEET EXCELLENT IN OXIDATION RESISTANCE AND FERRITIC STAINLESS STEEL SHEET EXCELLENT IN HEAT RESISTANCE AND METHOD OF PRODUCTION OF SAME - Ferritic stainless steel sheet which has a high oxidation resistance and scale spallation resistance even at a high temperature near 1000° C., characterized by containing C: 0.020% or less, N: 0.020% or less, Si: over 0.10 to 0.35%, Mn: 0.10 to 0.60%, Cr: 16.5 to 20.0%, Nb: 0.30 to 0.80%, Mo: over 2.50 to 3.50%, and Cu: 1.00 to 2.50%, having an amount of increase of oxidation after a continuous oxidation test in the air at 1000° C. for 200 hours of 4.0 mg/cm | 01-03-2013 |
20130008573 | FERRITIC STAINLESS STEEL SHEET EXCELLENT IN HEAT RESISTANCE AND WORKABILITY AND METHOD OF PRODUCTION OF SAME - Ferritic stainless steel sheet for an exhaust part which has little deterioration in strength even if undergoing long term heat history and is low in cost, excellent in heat resistance and workability characterized by containing, characterized by containing, by mass %, C: less than 0.010%, N: 0.020% or less, Si: over 0.1% to 2.0%, Mn: 2.0% or less, Cr: 12.0 to 25.0%, Cu: over 0.9 to 2%, Ti: 0.05 to 0.3%, Nb: 0.001 to 0.1%, Al: 1.0% or less, and B: 0.0003 to 0.003%, having a Cu/(Ti+Nb) of 5 or more, and having a balance of Fe and unavoidable impurities. | 01-10-2013 |
20140023550 | FERRITIC STAINLESS STEEL SHEET EXCELLENT IN HEAT RESISTANCE AND WORKABILITY AND METHOD OF PRODUCTION OF SAME - The present invention provides ferritic stainless steel sheet which is excellent in heat resistance at 950° C. and workability at ordinary temperature, that is, ferritic stainless steel sheet excellent in heat resistance and workability which is characterized by containing, by mass %, C: 0.02% or less, N: 0.02% or less, Si: over 0.1 to 1.0%, Mn: 0.5% or less, P: 0.020 to 0.10%, Cr: 13.0 to 20.0%, Nb: 0.5 to 1.0%, Cu: 1.0 to 3.0%, Mo: 1.5 to 3.5%, W: 2.0% or less, B: 0.0001 to 0.0010%, and Al: 0.01 to 1.0% and having a balance of Fe and unavoidable impurities, where Mo+W is made 2.0 to 3.5%. | 01-23-2014 |