Patent application number | Description | Published |
20100170317 | BENDING APPARATUS AND BENDING MACHINE - A bending apparatus for performing accurate non-destructive bending of material includes first and second jigs that are rotatable about a rotary shaft and that bend the material attached to the jigs as they rotate relative to each other. The first jig includes a bending section that is arranged offset from a rotary center to a rotating side of the material and that has a partially cylindrical surface with a radius of curvature corresponding to the radius of curvature of an inner peripheral surface of the material. Each of the first and second jigs has a suppressing section for suppressing displacement of the material, and a bending center of the material is arranged such that the material is not displaced relative to the first and second jigs when the material is bent. | 07-08-2010 |
20100229374 | COIL MANUFACTURING METHOD AND COIL MANUFACTURING APPARATUS - A coil manufacturing method for manufacturing a wave wound coil in a substantially cylindrical shape by shaping a linear conductor with a cross-sectional shape having directionality, includes: transferring a linear wave conductor shaped in a substantially rectangular waveform, and having straight side portions extending in a wave width direction, one-side connecting portions sequentially connecting every other pair of adjacent side portions at ends on a one wave width direction side, and other-side connecting portions sequentially connecting pairs of adjacent side portions that are not connected by the one-side connecting portions at ends on an other wave width direction side; first bending the one-side and second bending the other-side connection portions so that the side portions are arranged along a coil circumferential direction, and directions of cross-sectional shapes of the side portions are in a constant direction with respect to a coil radial direction; and winding the bent wave conductor on a bobbin. | 09-16-2010 |
20100231083 | COIL MANUFACTURING METHOD AND COIL MANUFACTURING APPARATUS - A coil manufacturing method for manufacturing a wave wound coil in a substantially cylindrical shape by shaping a linear conductor with a cross-sectional shape having directionality, including: transferring a linear waver conductor shaped in a substantially rectangular waveform, and having straight side portions extending in a wave width direction, one-side connecting portions sequentially connecting every other pair of adjacent side portions at ends on a one wave width direction side, and other-side connecting portions sequentially connecting pairs of adjacent side portions that are not connected by the one-side connecting portions at ends on an other wave width direction side; bending a target connecting portion, which is at least one of the one-side connecting portions and the other-side connecting portions of the wave conductor, at one position thereof to shape the target connecting portion into a substantially V shape so that the side portions are arranged along a coil circumferential direction and directions of cross-sectional shapes of the side portions are in a constant direction with respect to a coil radial direction; and winding the bent wave conductor on a bobbin. | 09-16-2010 |
20100236059 | STATOR MANUFACTURING APPARATUS - An stator manufacturing apparatus including: a stator core having radial slots formed at positions in a circumferential direction so as to open in an inner peripheral surface thereof; and a rectangular cross-section rectangular wire formed in a substantially cylindrical shape and forms a coil winding, and has linear portions that are respectively disposed in the radial slots and formed in parallel to the slots, continuous portions that alternately connect one end of the adjacent ones of the linear portions to each other and alternately connect the other end thereof to each other, and bent portions that are formed by bending one end side of the linear portions radially inward. The rectangular wire is disposed on the stator core in a distributed winding arrangement. The apparatus includes an substantially cylindrically-shaped insertion jig from which the rectangular wire is axially detachable, and having protrusions respectively provided at positions aligned with the slots on an outer peripheral surface thereof to protrude radially, and one end-side restricting members respectively provided at positions offset from the protrusions formed in the circumferential direction on an inner diameter side of an inscribed circle of teeth each located between adjacent ones of the slots so as to protrude toward one axial end side. The radial positions of the linear portions are restricted by disposing the rectangular wire from one end side of the insertion jig and disposing the linear portions so as to radially overlap the protrusions, respectively, and circumferential positions of the linear portions are restricted by disposing each of the bent portions between the one end-side restricting members. With the linear portions and the slots being aligned with each other, the insertion jig is inserted into the stator core from the one end side of the insertion jig, and is removed from the stator core toward the other end side, so as to respectively dispose the linear portions at predetermined positions in the slots. | 09-23-2010 |
20110030445 | BENDING METHOD - A bending method for forming, in a material in which several straight portions extending in parallel with each other and a first-end side coupling portion and a second-end side coupling portion provided alternately to couple first-end portions and second-end portions, respectively, of adjacent ones of the straight portions with each other are successively formed, folded portions respectively in a pair of the straight portions provided on both sides of the first-end side coupling portion. A length from one of the folded portions to the first-end side coupling portion is different from a length from the other of the folded portions. The bending method includes shaping the material such that the first-end side coupling portion is inclined with respect to a direction orthogonal to the pair of the straight portions in accordance with a difference between the lengths of the folded portions to be respectively formed in both the straight portions; and thereafter forming the folded portions in both the straight portions at the same time. The folded portions being bent in the same direction as each other. | 02-10-2011 |
20120181891 | MOTOR - A flat conductor wire in a U-phase first slot of a first group block and a flat conductor wire in a U-phase second slot of a second group block form an outer circumference base unit. A flat conductor wire in a U-phase second slot of the first group block and a flat conductor wire in the U-phase first slot of the second group block form an inner circumference base unit. The inner circumference base unit is located inside the outer circumference base unit. A coil end portion at one end of the inner circumference base unit and a coil end portion side at one end of the outer circumference base unit are bent toward the rotor side with respect to an in-slot conductor portion in the stator core. The coil end portion side at one end of the inner circumference base unit and the coil end portion side at one end of the outer circumference base unit are located further toward the axis of the rotor than an inner peripheral surface of the stator core. | 07-19-2012 |
20120217836 | MOTOR - To provide a motor in which a cage coil formed of a wave winding conductor wire wound in plural turns and with bent portions is inserted in an integral type stator core. The motor including a stator provided with a wave winding coil using a flat conductor and a stator core, and a rotor provided with a rotor shaft is configured such that the wave winding coil includes the cage coil formed of a first wave winding wire assembly wound in plural turns, this assembly being formed of a plurality of bent-end wave winding conductor wires formed in a meandering pattern and overlapped in sequence with displacements from each other, a coil end part of the cage coil at one end is bent toward the rotor with respect to in-slot portions of the stator core, and the coil end part at the one end is positioned closer to an axis of the rotor than an inner peripheral surface of the stator core is. | 08-30-2012 |
20120319523 | MOTOR, AND MOTOR PRODUCTION METHOD - Provided is a motor comprising: a stator equipped with a coil basket, which is a distributed winding coil that uses flat wire, and a stator core; and a rotor with a central shaft. The motor is characterized in that: the coil end at one end of the coil basket has bent sections that are bent on the rotor side in relation to wire sections inside slots of the stator core; and a lower-side concentric section and horizontal sections, which comprise the coil end at the other end, are positioned further toward the shaft center side of the rotor than the inner peripheral surface of the teeth; and the coil end at one end and the coil end at the other end comprise five flat wires that are lap wound in a flatwise direction. | 12-20-2012 |
Patent application number | Description | Published |
20150013149 | METHOD FOR MANUFACTURING A COIL - A method for manufacturing a coil that is formed by winding a conductor in a loop shape and stacking loops of the conductor and that includes a slot placement portion to be placed in a slot of a stator core, and a coil end placement portion to be placed outside the slot. The method preferably involves a winding step, a protrusion forming step, a crank forming step, an opening step, and an arc forming step. The winding step forms a winding having slot placement and coil end placement portions. The protrusion forming step forms a protruding shape that protrudes in a radially outward direction of the winding. In the crank forming step a stepped portion. The opening step of forming the winding so that an interval between the pair of expected slot placement portions gradually increases. The arc forming step forms an arc-shaped portion curved in the stacking direction. | 01-15-2015 |
20150123503 | STATOR - A stator configured with an annular stator core, and a plurality of coils mounted on the stator core and each including a winding portion formed by winding a rectangular conductor in a loop shape, a bus bar portion extended from one end in a radial direction of the stator core in the winding portion, and a terminal portion extended from the other end in the radial direction of the stator core in the winding portion. A bus bar portion is formed so that a longitudinal direction extends perpendicularly to a direction of a central axis of the stator core. The terminal portion is formed so that the longitudinal direction extends perpendicularly to the direction of the central axis of the stator core. The bus bar portion is joined to the terminal portion of a different one of the coils. | 05-07-2015 |
20150155750 | STATOR AND MANUFACTURING METHOD OF STATOR - A three phase stator configured with phases that are U-phase, V-phase, and W-phase. The stator is configured such that a bus bar portion includes a joint that is formed at an end and is joined to a terminal portion of a different one of the coils. A connecting portion is formed between the joint portion and the winding portion. In the coils, a first coil and a second coil serve as the two coils joined to each other by the joint portion of the bus bar portion of the first coil and the terminal portion of the second coil, and ends of the terminal portions of middle coils are the coils disposed between the first coil and the second coil are located at a height closer to the stator core than the connecting portion of the first coil in a direction of a central axis of the stator core. | 06-04-2015 |
20150162793 | STATOR - A stator configured with an annular stator core, and a plurality of coils mounted on the stator core. The bus bar portion being connected to the terminal portion of a different one of the coils of the same phase. The coil is a multi-layer coil that is formed by winding the conductor in a plurality of layers in an inside-outside direction of loops in the winding portion, and that includes on inner and outer peripheral sides of a coil end portion of the coil a plurality of lane change portions formed by the conductor. The bus bar portion is embedded in a clearance between the lane change portions of the coil of a different phase placed between the coils of the same phase which are connected to each other. | 06-11-2015 |