Patent application number | Description | Published |
20090085421 | Rotating Electrical Machine and Method for Manufacturing the Same - A rotating electrical machine includes: a stator that has a stator core and a stator coil; and a rotor disposed rotatably on an inner circumferential side of the stator core. The stator core includes a plurality of slots opening on the inner circumferential side and the slots are each formed as an open slot with a width of an inner circumferential-side opening thereof ranging along a circumferential direction set substantially equal to or greater than a width of a bottom side measured along the circumferential direction. The stator further includes a slot insulator disposed between inner wall of each of the slots at the stator core and the stator coil and a holding member constituted with a nonmagnetic material and inserted in each of the slots at the stator core so as to hold the slot insulator between two side surfaces present along the circumferential direction at the slot. The stator is formed by winding the stator coil through the plurality of slots. | 04-02-2009 |
20090140595 | Stator for Rotating Machine and Rotating Machine Using the Same - The stator includes a plurality of concentrated winding coils disposed coupled into an annular form through yokes, and a plurality of conductors that couple the coil ends of the concentrated winding coils to each other in a multi-phase connection fashion. Conductors for a U-phase, a V-phase, a W-phase, and neutral points P are each formed of a plurality of holes for inserting therethrough coil ends and are substantially circular with different diameters, and are disposed on the same plane. A connection plate provided with a wall is inserted between the conductors and the concentrated winding coils. A rotating machine includes the above-mentioned stator and a rotor that is rotatable within the stator. | 06-04-2009 |
20090267441 | Rotating Electrical Machine - A rotating electrical machine includes a stator including at least two element coils of the same phase each having a plurality of turns and connected to each other through a coil-to-coil connection wire, the element coils being arranged in adjacent slots, respectively; and a rotor rotatably provided to the stator through a gap. The element coils of the same phase are fitted in the adjacent slots so that wound around portions of the element coils partially overlap each other. The coil-to-coil connection wire connects at a coil end portion conductor wires extending from linear conductor wire portions of innermost wires of the element coils contained in the slots. | 10-29-2009 |
20110025162 | Rotating Electrical Machine - A rotating electrical machine, includes; a rotor in which a plurality of magnetic poles are provided in circumferential direction, and a stator within the rotor is disposed with a gap against the rotor, wherein; two stator magnetic poles are formed by winding coils in phase and by the stator core within 360° of electrical angle defined by the magnetic poles of the rotor; the coil turns that form respective stator magnetic poles have angular widths in circumferential direction of less than 180° of electrical angle; the coil turns that form the respective two stator magnetic poles are provided so as not to mutually overlap and are wound so that adjacent ones of the stator magnetic poles have mutually opposite polarities, and; in the stator, each winding of each coil consists of an external bridge wire, a turn portion, an internal bridge wire, and a turn portion in that order. | 02-03-2011 |
20110133580 | Rotating Electrical Machine - A rotating electrical machine includes: a stator that includes a cylindrical stator core and a stator winding wire wound around the stator core; and a rotor disposed facing the stator via a gap; wherein at least one cooling medium path extending in a direction of a central axis of the stator core is provided in the stator; and the cooling medium path is inclined relative to the central axis of the stator core. | 06-09-2011 |
20110175485 | ROTATING ELECTRICAL MACHINE AND MANUFACTURING METHOD OF A STATOR THEREOF - A rotating electrical machine includes: a rotor to which a plurality of magnetic poles are provided along its circumferential direction; a stator core laminating a plurality of core plates, and having a cylinder portion with teeth extending radially outwards; and a stator coil received in a slot between the teeth; wherein each of the teeth includes: a tooth body portion extending radially outwards from the cylinder portion; and a pair of projecting end portions, provided at an end of the tooth body portion, that are in radially extended state before receiving the stator coil in the slot, and that are in curved state in which they are bent in circumferential direction after receiving the stator coil in the slot; and wherein, in the curved state, a vacant space is defined at the slot side of a curved portion that communicates the base portion and the projecting end portion. | 07-21-2011 |
20110241472 | Rotating Electrical Machine and Method for Manufacturing a Stator Thereof - A group of coils used in a stator of a rotating electrical machine, wound continuously upon a divided core with a crossover wire, in which 2N coils (where N is a natural number) are arranged at approximately regular intervals, wherein a winding direction of N coils, which are first through Nth continuously wound coils, of a front half of the 2N coils, and a winding direction of rear half coils which are (N+1)-st through (2N)-th continuously wound coils, are opposite. | 10-06-2011 |
Patent application number | Description | Published |
20080201935 | Manufacturing Method for Rotary Electric Machine and Stator - A manufacturing method for a rotary electric machine according to the present invention comprises steps of: (1) preforming a coil including a plurality of element coils of an insulated conductor; (2) inserting a first side of a first element coil of the element coils into a first slot of a stator core through an opening of the first slot; (3) inserting a second side of the first element coil into a second slot in which a first side of a second element coil of the element coil has been already inserted; (4) electrically connecting coil ends of a plurality of the coils to each other; and (5) rotatably mounting a rotor inside the stator core. | 08-28-2008 |
20090001841 | Rotation electric machine having a wave winding coil with cranked crossover conductor, distributed winding stator, and method and apparatus for forming same - The invention provides a distributed winding stator using a rectangle conductor as coil, realizing a miniaturized coil end and reduced current density compared to the prior art stator, so as to obtain a miniaturized rotation electric machine with high power. The distributed winding stator is formed by wave winding a conductor source wire having a rectangular cross-section, wherein the wire is cranked so that parietal regions on both ends are displaced corresponding to the width of the source wire and that the length is within the range of intervals between adjacent slots, and inserting the wave winding coil into slots of the stator. | 01-01-2009 |
20090039729 | DC Brushless Motor for Electrical Power Steering and the Production Method Thereof - The stator core of a motor comprises an annular back core, and a plurality of tees created separately from the back core and secured onto the inner periphery of the back core. A stator coil is wound on each of the tees by a distributed or concentrated winding method. The stator core and stator coil are formed by molding. | 02-12-2009 |
20090200888 | Rotating Electric Apparatus and Method for Connecting Stator Coils Thereof - Each pair of coils mutually connected in a stator winding is arranged in a fashion that a first coil of each pair of coils has an inner-circumferential-side coil terminal ( | 08-13-2009 |
20100001609 | ROTATING ELECTRIC MACHINE - An object of the present invention is to provide a compact, high-power rotating electric machine by downsizing coil ends on a distributed-wound stator using rectangular wires in comparison with the conventional one or by enhancing coil heat radiation from the coil ends or slot insertion portions. | 01-07-2010 |
20100194230 | Process of Manufacture and Manufacturing Device of Stator - An object of the present invention is to provide a small, high-power rotating electrical machine by suitably forming a distributed winding coil such that two stator magnetic poles each formed of in-phase coil turns are arranged within an electric angle of 360 degrees formed by magnetic poles of the rotor. The present invention provides a method for manufacturing a stator, the method including a first step of placing a distributed winding coil | 08-05-2010 |
20120066897 | CONCENTRATED WINDING COIL AND METHOD OF MANUFACTURING SAME - A concentrated winding coil includes a plurality of coil layers each of which comprises a plurality of wire turns wound in alignment winding; and a bobbin including an inner flange, an outer flange and a bobbin body on which the wire is wound, wherein: each of the coil layers includes a turn shift portion where the wire is shifted from an n-th turn to an (n+1)-th turn; the turn shift portion is located only on a side of a coil end section of the coil; and the bobbin body has no guide grooves. A method of manufacturing the concentrated winding coil includes steps of: winding the wire on the bobbin; and pressing the wire by a wire guiding/holding member toward the inner flange or toward the outer flange. | 03-22-2012 |