Patent application number | Description | Published |
20090199393 | METHOD FOR MANUFACTURING CIRCUMFERENTIALLY DEPLOYING TYPE OF STATOR COIL AND MOTOR USING THE STATOR COIL - A stator coil to be wound in and around a stator is manufactured. An insulating-coating conducting wire is bent to alternately provide the wire with slot-held conductor sections held in slots of the stator and a coil-end conductor section mutually connecting the slot-held conductor sections outside the slots. The coil-end conductor section is deployed outside the stator in the circumferential direction thereof. In manufacturing the stator coil, three or more pairs of molds are located along a portion of the wire in its longitudinal direction at predetermined intervals. The coil-end conductor section is formed by moving the molds along a direction allowing paired molds of each mold to come closer to each other, and the slot-held conductor sections is formed by moving the molds, in parallel, in both a direction perpendicular to the longitudinal direction and the longitudinal direction thereof. | 08-13-2009 |
20090260218 | METHOD FOR MANUFACTURING A STATOR FOR INNER-ROTOR TYPE ROTARY ELECTRIC MACHINES - A tapered cage coil is prepared, having a small-diameter top coil end | 10-22-2009 |
20090260219 | METHOD OF MANUFACTURING COIL FOR STATOR INCORPORATED IN ROTARY ELECTRIC MACHINE - A method is provided for manufacturing a stator coil for a rotary electric machine, which is formed by winding up a plurality of phase wires. The method includes a shaping step for shaping a plurality of shaped wire members from electrically conductive wires, an integrating step for integrating the plurality of shaped wire members with each other to form an integrated body, and a winding-up step for winding the integrated body about a core member to form a wound body. At the winding-up step, curve forming is performed by plastically deforming turn portions of the integrated body into a curved shape, during conveyance of feeding the integrated body to the core member. | 10-22-2009 |
20090260222 | METHOD OF MANUFACTURING COIL ASSEMBLY UNIT FOR ROTARY ELECTRIC MACHINE - A method of manufacturing a coil assembly unit comprises steps of coil forming, weaving, compressing steps. In the forming step, each coil wire is formed which provides linear portions and turn potions each connecting linear portions, during which bent portions are formed at both ends of each linear portion, the bent portions being bent so that mutually adjacent linear portions are deviated from each other. In the weaving step, the coil wires are mutually woven in turn, in which the turn portions intersect in turn. All the coil wires are subjected to the weaving step in turn to produce a woven coil assembly. In the compressing step, the woven coil assembly is compressed by compressing the woven coil so that each bent portion is deformed to be linear to allow the mutually adjacent linear portions to come closer to each other, thus producing the coil assembly unit. | 10-22-2009 |
20090261685 | SEGMENT-CORE TYPE STATOR FOR INNER-ROTOR TYPE ROTARY ELECTRIC MACHINES AND AN IMPROVED METHOD FOR MANUFACTURING THE STATOR - When accommodating a cage stator coil in a stator core made up of distributed cores, an end side distributed core composing end side core at an end side in axial direction is made larger than a central side distributed core composing central side core. The cage stator coil is formed by compressing a central portion of an original cage stator coil. The end side segment core composing the end core is set at a central portion in an axial direction of the cage stator coil then the end side coil is moved to an end portion in the axial direction. The central side segment core composing the central core is set at the central portion in the axial direction of the cage stator coil thereafter. | 10-22-2009 |
20090273253 | STATOR FOR ROTARY ELECTRIC MACHINE AND METHOD OF MANUFACTURING THE STATOR - A rotor provided in rotary electric machines comprises a stator core having a radial direction and slots provided with bottomed openings directed in the radial direction. The rotor also comprises a stator coil comprising slot accommodation portions being accommodated in the slots of the stator core and coil end portions each connecting mutually adjacent slot accommodation portions among the slot accommodation portions and respectively protruding from both end faces of the stator core. The stator coil is pre-formed into a cylindrical shape before the slot accommodation portions are accommodated into the slots of the stator core. The slot accommodation portions are formed to respectively have convex parts each protruding toward an opposite way to the slot openings, before the slot accommodation portions are accommodated into the slots. The convex parts are pressed by the stator core toward the openings during accommodation of the slot accommodation portions into the slots. | 11-05-2009 |
20090276997 | METHOD OF PRODUCING COIL MADE UP OF RECTANGULAR WAVE-SHAPED WINDINGS - A method of producing a coil which comprises steps of bending each of straight coil wires into a rectangular wave shape including in-slot portions to be disposed in slots of a stator core and turned portions connecting between the in-slot portions, turning a coil bend-forming portion that is one of the in-slot portions of each coil wire which becomes a folded bend of a phase winding by 180° around an axis thereof, twisting the turned portions of the coil wires together to weave the coil wires into a wire bundle, and folding the wire bundle at the coil bend-forming portions of the coil wires to place sides of the wire bundle to overlap each other to make the coil, thereby eliminating the 180° twisting of the coil bend-forming portions to produce the coil without any undesirable deformation of the phase windings. | 11-12-2009 |
20090313810 | METHOD OF MANUFACTURING COIL ASSEMBLY OF STATOR OF ELECTRIC ROTATING MACHINE - The method is for manufacturing a coil assembly of a stator of an electric rotating machine constituted by a plurality of interlaced coil wires each including a plurality of in-slot portions and a plurality of turn portions each of which connects adjacent two of the in-slot portions. The method includes a setting step of setting coil wires such that they are located on a circle and extend in parallel, and a plurality of shaping steps performed repeatedly for interlacing the coil wires into a doughnut shape. | 12-24-2009 |
20090320275 | METHOD OF TWISTING COIL WIRE TO MAKE COIL ASSEMBLY FOR USE IN ELECTRIC ROTARY MACHINE - A method of producing a coil assembly to be wound in a stator core with a plurality of slots. The method prepares a first and a second coil wire each of which is made up of in-slot portions and turned portions, arranges the first and second coil wires in parallel with the turned portions being offset from each other in a lengthwise direction thereof, moves the first coil wire to establish engagement of the turned portions of the first and second coil wires, turns the first coil wire about a pivot where the turned portions engage, crosses the first coil wire over the second coil wire around the pivot, and turns the first coil wire around the pivot so as to twist the turned portions of the first and second coil wires together. This sequence of steps is repeated to twist or braid the first and second coil wires without undesirable deformation thereof. | 12-31-2009 |
20090322178 | COIL WIRE FOR COIL ASSEMBLY FOR ROTARY ELECTRICAL MACHINE - A coil wire for a coil assembly of a rotating electrical machine is provided such that sufficient space in braiding is secured when coil-wire-bundles bundling a plurality of the coil wires are braided. | 12-31-2009 |
20100000075 | STATOR MANUFACTURING APPARATUS AND METHOD FOR ROTARY ELECTRIC MACHINES - A method is provided, for manufacturing a stator for a rotary electric machine by shrink-fitting an outer cylinder to a core assembly where a cage-shaped wound coil is assembled with segment cores. The assembly is inserted into the outer cylinder having a diameter increased by thermal expansion caused by the heat from a heating unit, while the outer diameter of the assembly is being reduced by permitting the assembly to pass through a tapered guide unit. The guide unit has a portion whose diameter is larger than an outer diameter of the assembly, and a portion whose diameter is larger than an inner diameter of the outer cylinder and smaller than an inner diameter of the cylinder in the thermally expanded state, and a tapered through hole vertically passing through the guide unit. Thus, the size of the assembly is radially reduced, with a uniform diameter being obtained throughout the assembly. | 01-07-2010 |
20100000077 | METHOD OF MANUFACTURING COIL FOR STATORS MOUNTED IN ROTARY ELECTRIC MACHINES - In manufacturing a stator coil for rotary electric machine having phase windings, plural conductive shaped wire members are integrated mutually to form an integrated body. Each shaped wire member has plural straight portions, and plural turn portions alternately connecting adjacent straight portions at each of both ends of each straight portion. The body has plural straight superposed portions each formed by mutually superposing the plural straight portions. A wound-up body has plural straight stack portions. The straight portions are fitted to respective fitting grooves of an alignment member, the fitting grooves being formed in the alignment member at intervals each corresponding to the size of a gap between adjacent straight stack portions. The integrated body is wound about a core member together with the alignment member, with the straight portions being fitted to the alignment member to form the wound-up body. | 01-07-2010 |
20100242277 | APPARATUS AND METHOD FOR SHAPING ELECTRIC WIRE FOR STATOR COIL OF ELECTRIC ROTATING MACHINE - An electric wire shaping apparatus is provided for shaping an electric wire for a stator coil of an electric rotating machine. The electric wire includes a plurality of straight portions and a plurality of turn portions. Each of the turn portions includes a specific part and all of the specific parts of the turn portions are identical to each other. The apparatus includes a clamping mechanism, first and second holders, and a shaping mechanism. The clamping mechanism clamps the specific part of one of the turn portions of the electric wire in a width-wise direction thereof. The first and second holders respectively hold two different sections of the specific part in a thickness-wise direction thereof. The shaping mechanism moves one of the first and second holders relative to the other in the thickness-wise direction of the specific part, thereby shaping the specific part to form a crank-shaped portion therein. | 09-30-2010 |
20100251796 | APPARATUS AND METHOD FOR SHAPING ELECTRIC WIRE FOR STATOR COIL OF ELECTRIC ROTATING MACHINE - An electric wire shaping apparatus includes a pair of male and female shaping dies and a pressing mechanism. Each of the male and female shaping dies has a shaping surface that includes a plurality of straight parts and a plurality of bent parts. The pressing mechanism moves one of the male and female shaping dies toward the other, thereby pressing a turn portion of an electric wire between the shaping surfaces of the male and female shaping dies in a width-wise direction of the turn portion. Furthermore, the male and female shaping dies are so configured that when they are located closest to each other, a gap W | 10-07-2010 |
20100252139 | APPARATUS AND METHOD FOR SHAPING ELECTRIC WIRE FOR STATOR COIL OF ELECTRIC ROTATING MACHINE - An electric wire shaping apparatus is disclosed for shaping an electric wire for a stator coil. The electric wire includes a turn portion that is to be located outside of slots of a stator core and a pair of straight portions that are connected by the turn portion and to be respectively received in two of the slots. The interval between the straight portions defines a coil pitch. The apparatus includes a shaping mechanism and a pair of coil pitch keeping mechanisms. The shaping mechanism presses the turn portion of the electric wire in its width-wise direction, thereby shaping the turn portion to have a desired shape. The coil pitch keeping mechanisms respectively press the straight portions of the electric wire toward the inside space between the straight portions, thereby preventing the interval between the straight portions from being changed by the pressing of the turn portion. | 10-07-2010 |
20110041318 | METHOD OF MANUFACTURING COIL ASSEMBLY FOR ELECTRIC ROTATING MACHINE - At one ends of a pair of coil wires | 02-24-2011 |
20110041319 | METHOD OF MANUFACTURING STATOR COIL - A plurality of shaped wires, which are obtained by shaping electric wires, are assembled to form a wire assembly | 02-24-2011 |
20110101816 | STATOR FOR A ROTATING ELECTRIC MACHINE AND ROTATING ELECTRIC MACHINE - A stator includes a stator-core having slots and teeth, and a back-yoke having convex and concave portions. The convex portions are partially inserted into the slots, and the concave portions receive the teeth. The teeth include tip portions whose circumferential widths become larger along a radial direction from the inside to the outside of the stator. The back-yoke includes convex portions whose circumferential widths become larger along the radial direction from the outside to the inside of the stator. The tip portions and the convex portions have substantially the same shape. The length of a joint portion between the tip portion and the convex portion, the circumferential width of the tooth corresponding to a tip surface of the convex portion, the width of a root portion of the tooth, and the circumferential width of the convex portion corresponding to a bottom face of the concave portion are substantially the same. | 05-05-2011 |
20110163625 | STATOR DESIGNED TO MINIMIZE LEAKAGE CURRENT AND ELECTRIC ROTATING MACHINE USING SAME - A stator which may be employed in an electric rotating machine. The stator includes a stator winding which includes in-slot portions disposed in slots of a stator core. The in-slot portions are arrayed in each of the slots in a form of multiple layers aligned in a radial direction of the stator core. The stator winding is made up of a first winding and a second winding which are connected together through a joint. The first winding is defined by a portion of the stator winding between the joint and an end of the stator winding which is to be connected to an external. The second winding includes the in-slot portion placed within at least one of the slots as an outermost layer that is one of the layers placed most outwardly in the radial direction of the stator core. This results in a great decrease in leakage current. | 07-07-2011 |
20110173800 | METHOD OF MANUFACTURING STATOR FOR ELECTRIC ROTATING MACHINE - A method of manufacturing a stator includes the steps of: ( | 07-21-2011 |
20110174037 | METHOD AND APPARATUS FOR MANUFACTURING STATOR COIL FOR ELECTRIC ROTATING MACHINE - A method of manufacturing a stator coil for an electric rotating machine includes the steps of: (1) forming substantially planar electric wires each of which includes in-slot portions to be received in slots of a stator core and turn portions to be located outside the slots to connect adjacent pairs of the in-slot portions; (2) rolling each of the planar electric wires through plastic deformation into a spiral or circular-arc shape; and (3) assembling the rolled electric wires together to form the stator coil. Further, in the rolling step, each of the planar electric wires is rolled by deforming each of the turn portions of the electric wire while restricting movement of at least one of the in-slot portions of the electric wire which is located closer to a rolling start end of the electric wire than the turn portion is. | 07-21-2011 |
20110174038 | METHOD AND APPARATUS FOR ROLLING ELECTRIC WIRE FOR STATOR COIL OF ELECTRIC ROTATING MACHINE - Disclosed is an apparatus for rolling a substantially planar electric wire by more than one turn into a spiral shape. The apparatus includes an inner pressing member having an outer surface, an intermediate pressing member having radially inner and outer surfaces, and an outer pressing member having an inner surface. The inner and intermediate pressing members together press a first part of the electric wire between the outer surface of the inner pressing member and the inner surface of the intermediate pressing member, thereby plastically deforming the first part to extend along the outer surface of the inner pressing member. The intermediate and outer pressing members together press a second part of the electric wire between the outer surface of the intermediate pressing member and the inner surface of the outer pressing member, thereby plastically deforming the second part to extend along the outer surface of the intermediate pressing member. | 07-21-2011 |
20110260570 | STATOR OF ROTATING ELECTRICAL MACHINE - A turn part of a lead wire includes a projection part, a slope part and a second bent part. The projection part projects from a first slot to a direction parallel to an axial direction of the stator core. The slope part is diagonally extended at an angle of less than 90 degrees aiming to a Kth slot. The Kth slot is separated from the first slot at a specific interval via a first bent part that is bent in a circumferential direction from a tip of the projection part. The second bent part is connected with the slot accommodation part accommodated in the Kth slot, and is bent to the direction parallel to the axial direction of the stator core from a tip of the slope part. | 10-27-2011 |
20140062230 | STATOR OF ROTATING ELECTRIC MACHINE - A stator includes an annular stator core having a plurality of slots arranged in the circumferential direction at predetermined intervals and a stator coil formed of a plurality of electric conductor wires mounted on the stator core. Each of the electric conductor wires has a plurality of in-slot portions received in the slots of the stator core and a plurality of turn portions that connect, on the outside of the slots, adjacent pairs of the in-slot portions. The stator coil has first and second coil end parts and that respectively protrude axially outward from a pair of axial end faces of the stator core. At each of the coil end parts, the turn portions of the electric conductor wires are stacked in a radial direction of the stator core, and the axial heights h | 03-06-2014 |