Abstract: An axial gap dynamoelectric machine is provided with a stator core in which continuously wound coils (10a, 10d, 10g, 10j) including a plurality of coils formed of continuously wound insulation-coated conductor wire are disposed in a circumferential direction with the continuously wound coils of the three phases overlapped. With the respective coils being disposed in a radiating shape, the continuously wound coils are configured so that on the inner diameter side of the coils, the insulation-coated conductor wires are continuously wound to adjacent coils via crossover wires (15U2, 15U3, 15U4, 15U5), and the coils are bent in the vertical direction and the continuously wound coils of each phase are made to overlap with each other so that the length (2×L3+L2) of the crossover wires can be adjusted regardless of the core layer thickness (L1) of the stator core.

Abstract: A rotating electrical machine includes a stator and a rotor. The stator winding includes a plurality of conductor segments inserted through the slots from one end surface of the stator core with end portions of the conductor segments projecting out beyond another end surface of the stator core. The conductor segments include an undeformed portion, a plastically deformed portion formed at the end portions thereof and a tapered portion. The plastically deformed portion has a dimension of the plastically deformed portion along a circumferential direction that is greater than a dimension of the undeformed portion along the circumferential direction and so that a dimension of the plastically deformed portion along a radial direction is smaller than a dimension of the undeformed portion along the radial direction. The conductor segments are welded together at tops of the plastically deformed portions thereof.

Abstract: 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.

Abstract: The present invention, in a rotating electrical machine having a configuration in which a plurality of magnetic pole pieces is attached along outer perimeters of the rotating axis, provides a structure of rotating electrical machine with small cogging torque by providing a skew in magnetic pole pieces. The rotating electrical machine according to the present invention comprises a plurality of magnetic pole pieces disposed with a skew angle and a cylindrical attachment ring for attaching the magnetic pole pieces, wherein an engaging portion provided at outer perimeters of the attachment ring and an engaging portion included in the magnetic pole pieces are both extended along the rotating axis.

Abstract: A stator includes: a stator core with N pieces of slots ranging along an axial direction, which are formed side-by-side along a circumferential direction; and a stator winding installed in the slots at the stator winding. The stator winding includes a plurality of winding groups, each made up with N pieces of lap-wound coils each formed by winding a conductor wire a plurality of times. The winding groups are disposed in a plurality of layers set side-by-side along a radial direction at the stator core. One coil side at each of the lap-wound coils is inserted in a specific slot on an inner side along the radial direction in a specific layer and another coil side of the lap-wound coil is inserted in another slot on an outer side along the radial direction in the specific layer.

Abstract: In a rotating electrical machine, the concentrated winding coil includes a single-layer coil, corresponding to one layer, wound in a first turn advancing mode with the wire forming sequential coil turns starting from one end of the insulating bobbin toward another end of the insulating bobbin and another single-layer coil, corresponding to one layer, wound in a second turn advancing mode with the wire forming turns starting from the other end of the insulating bobbin toward the one end of the insulating bobbin, with the single-layer coil and the other single-layer coil layered alternately to each other. The insulating bobbin includes a winding portion where the concentrated winding coil is formed, collars each formed at one of two ends of the winding portion and at least one projecting portion configured to disallow misalignment at a turn changeover start area in the first and second turn advancing modes.

Abstract: A rotating electrical machine includes a rotor, in which a plurality of magnetic poles are provided in circumferential direction, and a stator, within which the rotor is disposed. In the stator, two stator magnetic poles are formed by winding coils of one phase and by a stator core of the stator within 360° of electrical angle defined by the magnetic poles of the rotor. The coils that form respective stator magnetic poles have angular widths in circumferential direction of less than 180° of electrical angle, the coils 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.

Abstract: A manufacturing method for manufacturing a rotating electrical machine equipped with a stator that includes a continuously wound coil unit achieved by continuously winding concentrated winding-type coils via cross wires, with coil wire having a rectangular section.

Abstract: 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 207 composed of a wire wound around a reel 210, as a whole, inside a stator core 202, and a second step of moving an insertion blade 213 so as to spread the distributed winding coil 207 in the radial direction of the stator core 202, thus inserting the distributed winding coil 207 into a stator core slot 206.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A rotating machinery is to be provided wherein coils can be wound round a stator core in a minimized state of connected parts. In a rotating machinery comprising a stator formed annularly and a rotor disposed rotatably on the inner periphery side of the stator, the stator comprises a stator core, the stator core having in the circumferential direction a plurality of slots each having a coil inserting portion on the inner periphery side, and coils wound by lap winding within the slots, at least the lap-wound winding portion of the coils in each slot being constituted by a continuous line and wound at a coil end so as to straddle the inner periphery side and the outer periphery side of the slot. According to this construction there is no increase in the number of connected parts even if the number of turns in the winding portion is increased.

Abstract: 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.

Abstract: A sputtering target consists of high purity Nb of which Ta content is 3000 ppm or less and oxygen content is 200 ppm or less. Dispersion of the Ta content in all the sputtering target is within ±30% as a whole target. Dispersion of the oxygen content is within ±80% as a whole target. According to such sputtering target, an interconnection film of low resistivity can be realized. In addition, each grain of Nb in the sputtering target has a grain diameter in the range of 0.1 to 10 times an average grain diameter and ratios of grain sizes of adjacent grains are in the range of 0.1 to 10. According to such sputtering target, giant dust can be largely suppressed from occurring. The sputtering target is suitable for forming a Nb film as liner material of an Al interconnection.

Abstract: 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.

Abstract: 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.

Abstract: 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 (212) led out from an inner-circumferential-side slot position in the direction of a coil end (220) of the stator winding, and that a second coil of each pair of coils has an outer-circumferential-side coil terminal (211) led out from an outer-circumferential-side slot position in the direction of the coil end (220) of the stator winding for connection to the inner-circumferential-side coil terminal (212), wherein there is provided a coil terminal connection structure in which the inner-circumferential-side coil terminal (212) is connected to the outer-circumferential-side coil terminal (211) across the coil end (220), and joint parts (211a, 212a) thereof are bent close to the coil end (220).

Abstract: The axial piston pump is provided with two annular seals mounted in the housing and sealingly engaging the piston to define a sealing fluid zone therebetween. An annular ring is provided between the seals to control the flow of sealing fluid through the fluid zone. This ring includes an internal helical flush duct for guiding the sealing fluid helically about the piston from one end of the ring to the other end of the ring.

Abstract: An interconnector line of thin film comprising 0.001 to 30 at % of at least one kind of a first element capable of constituting an intermetallic compound of aluminum and/or having a higher standard electrode potential than aluminum, for example, at least one kind of the first element selected from Y, Sc, La, Ce, Nd, Sm, Gd, Tb, Dy, Er, Th, Sr, Ti, Zr, V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, Fe, Co, Ni, Pd, Ir, Pt, Cu, Ag, Au, Cd, Si, Pb and B; and one kind of a second element selected from C, O, N and H in a proportion of 0.01 at ppm to 50 at % of the first element, with the balance comprising substantially Al. In addition to having low resistance, such an Al interconnector line of thin film can prevent the occurrence of hillocks and the electrochemical reaction with an ITO electrode. The interconnector line of thin film can be obtained by sputtering in a dust-free manner by using a sputter target having a similar composition.