Abstract: An object of the present invention is to suppress blow holes in welding using tough pitch copper. A welding method includes a first step of heating at least a portion of a first conductor and a second conductor containing copper, and a second step of adding a filler metal containing phosphorus while melting the first conductor and the second conductor so that a phosphorus content rate in a welded portion at which an end portion of the first conductor and an end portion of the second conductor are connected to each other is equal to or more than 0.1%.

Abstract: An object of the present invention is to provide a stator of a rotary electric machine of which miniaturization, high output, and cost reduction are balanced at a higher level than the related art, and a rotary electric machine including the stator. Provided is a stator of a rotary electric machine in which a stator coil is wound around a stator core.

Abstract: Provided are a rotary-electric-machine stator coil, a rotary-electric-machine stator having the same, and a rotary electric machine having the same, capable of improving a bonding strength and insulation reliability of a conductor bonding portion. A rotary-electric-machine stator coil includes: a conductor 110 having a bonding portion 104 bonded to other conductors; and a bonding member 401 having a melting point lower than a melting point of the conductor, wherein a tip of the bonding portion has an alloy layer 402 formed of an alloy of the conductor and the bonding member, and a root of the bonding portion is electrically connected by the bonding member.

Abstract: Provided is a stator of a rotary electric machine in which a bonding portion of ends of coil segments is formed at a coil end of the stator without being inflated toward the opposite side to a stator core, and the coil end can be minimized in an axial direction. The stator of the rotary electric machine includes a stator core (10) having a plurality of slots and a coil segment (30) which is disposed in the stator core to form a stator winding (3). The ends of the coil segments are overlapped in the axial direction, and bonded through the bonding portion. The bonding portion is formed in a shape such that the bonding portion is melted and flows down from the end (6a) of the coil segment on the opposite side to the stator core toward the end (5a) of the coil segment on a side near the stator core.

Abstract: Provided is a stator for a rotating electric machine equipped with a connection terminal having high manufacturability and vibration resistance; also provided is a rotating electric machine equipped with this stator. The stator, which is for a rotating electric machine equipped with a stator coil, is equipped with a connection terminal. The connection terminal has a crimping part to which stator coil input/output coil conductors are connected, and a fastening part which is mechanically connected to an external mechanism, with a melt material arranged on the fastening part. The input/output coil conductors are configured so as to be connected to the connection terminal, with the melt material provided on the crimping part therebetween.

Abstract: A rotating electric machine having downsized coil ends is provided. In a rotating electric machine having a stator 130 including a stator core 132 formed with a plurality of slots 420 rowed in a circumferential direction and a stator coil 138 inserted into the slots of the stator core, and a rotor 150 disposed rotatably with respect to the stator core with a clearance interposed therebetween. The stator coil is formed by a plurality of segment coils 28 being connected, the segment coils 28 being made of a conductor shaped into a rough U-shape and having a rectangular cross-section. The segment coil has at an end a connection portion 800 connected to another segment coil, the connection portion having a corner portion 810.

Abstract: Provided are a rotary-electric-machine stator coil, a rotary-electric-machine stator having the same, and a rotary electric machine having the same, capable of improving a bonding strength and insulation reliability of a conductor bonding portion. A rotary-electric-machine stator coil includes: a conductor 110 having a bonding portion 104 bonded to other conductors; and a bonding member 401 having a melting point lower than a melting point of the conductor, wherein a tip of the bonding portion has an alloy layer 402 formed of an alloy of the conductor and the bonding member, and a root of the bonding portion is electrically connected by the bonding member.

Abstract: Provided is a stator of a rotary electric machine in which a bonding portion of ends of coil segments is formed at a coil end of the stator without being inflated toward the opposite side to a stator core, and the coil end can be minimized in an axial direction. The stator of the rotary electric machine includes a stator core (10) having a plurality of slots and a coil segment (30) which is disposed in the stator core to form a stator winding (3). The ends of the coil segments are overlapped in the axial direction, and bonded through the bonding portion. The bonding portion is formed in a shape such that the bonding portion is melted and flows down from the end (6a) of the coil segment on the opposite side to the stator core toward the end (5a) of the coil segment on a side near the stator core.

Abstract: A plating layer 4 is formed on a surface of a battery cover 3, and a peripheral edge part 37b of a cover case 37 is arranged on an upper surface of the plating layer 4. A welding part 40 is formed at a tip part of the peripheral edge part 37b. The welding part 40 includes a melted part 41 in which the tip of the peripheral edge part 37b is melted, and an elution part 42 flowing from the tip onto the plating layer 4, and the melted part 41 and the elution part 42 are welded to the plating layer 4 in the upper surface of the plating layer 4.

Abstract: Provided is a stator for a rotating electric machine equipped with a connection terminal having high manufacturability and vibration resistance; also provided is a rotating electric machine equipped with this stator. The stator, which is for a rotating electric machine equipped with a stator coil, is equipped with a connection terminal. The connection terminal has a crimping part to which stator coil input/output coil conductors are connected, and a fastening part which is mechanically connected to an external mechanism, with a melt material arranged on the fastening part. The input/output coil conductors are configured so as to be connected to the connection terminal, with the melt material provided on the crimping part therebetween.

Abstract: An objection of the present invention is to provide a fuel injection valve with a reduced variation in an injection amount and, in order to achieve this object, a method for adjusting stroke, the method being able to correct change in an amount of stroke caused by welding. In the method for adjusting the amount of stroke of a movable member of a fuel injection valve including a nozzle member having a seat face, a nozzle holder member to which the nozzle member is joined by welding, and the movable member having a valve seat portion for coming in contact with the seat face, the amount of stroke of the movable member is adjusted by plastically deforming a deformable portion provided to the nozzle holder member after joining the nozzle member and the nozzle holder member by welding.

Abstract: A rotating electric machine having downsized coil ends is provided. In a rotating electric machine having a stator 130 including a stator core 132 formed with a plurality of slots 420 rowed in a circumferential direction and a stator coil 138 inserted into the slots of the stator core, and a rotor 150 disposed rotatably with respect to the stator core with a clearance interposed therebetween. The stator coil is formed by a plurality of segment coils 28 being connected, the segment coils 28 being made of a conductor shaped into a rough U-shape and having a rectangular cross-section. The segment coil has at an end a connection portion 800 connected to another segment coil, the connection portion having a corner portion 810.

Abstract: A welded construction according to the present invention has a first metallic member, on one surface of which a projecting portion is formed and on the other surface of which a depressed portion corresponding to the projecting portion is formed, and a second metallic member are welded together at a welded portion which includes a summit portion of the projecting portion; wherein, on at least one of the first metallic member and the second metallic member, on its opposite surface to its surface that faces the other one of the metallic members, a recessed portion is formed that is recessed from its peripheral region towards a region which corresponds to the welded portion.

Abstract: A plating layer 4 is formed on a surface of a battery cover 3, and a peripheral edge part 37b of a cover case 37 is arranged on an upper surface of the plating layer 4. A welding part 40 is formed at a tip part of the peripheral edge part 37b. The welding part 40 includes a melted part 41 in which the tip of the peripheral edge part 37b is melted, and an elution part 42 flowing from the tip onto the plating layer 4, and the melted part 41 and the elution part 42 are welded to the plating layer 4 in the upper surface of the plating layer 4.

Abstract: Crater-like intricate indents formed by melting and scattering of a metal surface are provided by irradiating with high density energy such as a laser beam or an electron beam the surface of the metal member. By using the irradiation condition that the crater-like indents have partially overlapped regions, gangue-like prominent portions formed by melting and scattering of the metal surface, a spherical metal splash formed at the top end of the prominent portions, and a roughed surface shape where particulate sputtering formed upon fabrication is secured. Thus, the molded resin intrudes into the constricted space formed by surface roughening to provide an anchoring effect against volume change of the resin in the direction where the resin is peeled from the surface of the metal member.

Abstract: An objection of the present invention is to provide a fuel injection valve with a reduced variation in an injection amount and, in order to achieve this object, a method for adjusting stroke, the method being able to correct change in an amount of stroke caused by welding. In the method for adjusting the amount of stroke of a movable member of a fuel injection valve including a nozzle member having a seat face, a nozzle holder member to which the nozzle member is joined by welding, and the movable member having a valve seat portion for coming in contact with the seat face, the amount of stroke of the movable member is adjusted by plastically deforming a deformable portion provided to the nozzle holder member after joining the nozzle member and the nozzle holder member by welding.

Abstract: Crater-like intricate indents formed by melting and scattering of a metal surface are provided by irradiating with high density energy such as a laser beam or an electron beam the surface of the metal member. By using the irradiation condition that the crater-like indents have partially overlapped regions, gangue-like prominent portions formed by melting and scattering of the metal surface, a spherical metal splash formed at the top end of the prominent portions, and a roughed surface shape where particulate sputtering formed upon fabrication is secured. Thus, the molded resin intrudes into the constricted space formed by surface roughening to provide an anchoring effect against volume change of the resin in the direction where the resin is peeled from the surface of the metal member.

Abstract: A resistance welding structure and a resistance welding method may form a highly reliable welded part by applying a proper pressurizing force and a proper heat value to a joining portion. Also provided are a member to be welded which is suitable for carrying out these resistance welding structure and resistance welding method, and a method of manufacturing the member to be welded. A member to be welded is formed with a recessed portion on one surface of a raw material formed of a metal plate, and a projection is formed on a back surface of the recessed portion. Assuming a plate thickness of the raw material in the inside of the recessed portion and around the periphery of the projection as D2, and a plate thickness of the raw material outside the recessed portion 2 as D3, the plate thicknesses of the respective portions have the relationship of D2<D3.

Abstract: A welded construction according to the present invention has a first metallic member, on one surface of which a projecting portion is formed and on the other surface of which a depressed portion corresponding to the projecting portion is formed, and a second metallic member are welded together at a welded portion which includes a summit portion of the projecting portion; wherein, on at least one of the first metallic member and the second metallic member, on its opposite surface to its surface that faces the other one of the metallic members, a recessed portion is formed that is recessed from its peripheral region towards a region which corresponds to the welded portion.

Abstract: A small-sized motor for electric power steering, in which coil connection can be easily performed with space saving, and a method for manufacturing the motor. Multi-phase stator coils assembled in a stator coil are connected per phase by connecting rings at coil ends of the stator coils. A bus bar supplied with electric power from the exterior is stacked onto the connecting rings in the axial direction of the motor and is electrically connected to the connecting rings.