NHK Spring Patente

Zusammenfassung wird geladen …

Provided is a method for manufacturing a stator, capable of easily forming a power line by bending a projected portion. The method for manufacturing a stator to bend a projected portion 9 of a segment coil 7 held by a stator core 3, displaces a tip end portion 10a of a projected portion 9 outward in a radial direction of the stator core 3 to bend the projected portion 9 so as to be positioned at a first position, and displaces the tip end portion 10a of the bent projected portion 9 inward in the radial direction to bend back bent portions 12a and 12b of the projected portion 9 so as to be positioned at a second position displaced to an outer side in the radial direction with respect to an initial position before the bending.

Provided is a twisting jig for a stator, capable of suppress radial deformation of projected portions of segment coils projected from a stator core at the time of a twisting process. The twisting jig 9A for a stator 1 in which projected portions 7A are bent in a circumferential direction by a twisting process, the projected portions including coil ends 7a of segment coils 7 held by a stator core, is provided with a twisting member 13 having a holding portion 17 that holds the coil ends 7a to displace the coil ends relative to the stator core 3 in an axial direction and the circumferential direction and bend the projected portions 7A, and a restraining wall 31 supported so as to be movable in the axial direction on an outside in a radial direction with respect to the twisting member 13, to restrain the projected portions 7A on the outside in the radial direction at the time of the bending in a projecting state of the restraining wall projecting with respect to the holding portion 17 in the axial direction.

Provided is a method and a device for producing a lamination core, capable of predicting generation of weld cracks to further improve suppressing the weld cracks. The method for manufacturing a lamination core 1 in which a plurality of core pieces 7 are laminated, pressurizes and welds the lamination core 1 in a laminating direction, and controls accumulation of a compression amount of the lamination core 1 due to the pressurizing, a shrinkage amount at a welded portion of the lamination core 1 in the laminating direction, and a spring-back amount of the lamination core 1 due to release of the pressurizing to be within a compression limit of the lamination core 1.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Proposed is a laminate production tool for a laminate including a circuit pattern having a thickness of 0.8 mm or more, enabling prevention of a trouble from occurring in an insulating layer. A laminate production tool (10) is used for heating and pressurizing, in a chamber (50), a laminate before press bonding (1A) including a metal base substrate (2), a resin composition (3A) that is semi-cured, and a circuit body (C) that are laminated on top of each other, the circuit body (C) including a circuit pattern (4) or a mount body, the circuit pattern (4) having a thickness of 0.8 mm or more, the mount body including the circuit pattern (4) on which an electronic component is mounted. The laminate production tool (10) includes: a base jig (11) for attachment of the laminate before press bonding (1A); a film (13) that covers at least the resin composition (3A) and the circuit body (C); and a cover jig (12) that sandwiches the film (13) in cooperation with the base jig (11), in which the base jig (11) includes an outlet (11e) for exhaustion inside the film (13) that covers the resin composition (3A) and the circuit body (C), and the cover jig (12) includes an opening (12a) for exposure of an entire area of a covering part (13a) that covers the resin composition (3A) and the circuit body (C) in the film (13).

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Provided is a welding method capable of suppressing variation in welding inside an assembly. The welding method that brings a conductive wire 15 and a terminal 17 inside an assembly 1 into contact with each other to be welded, drives a jig 19 operable from an outside of the assembly 1 to make contact between the conductive wire 15 and the terminal 17. The welding is performed between the conductive wire 15 and the terminal 17 while controlling driving force of the jig 19 to apply a predetermined pressing force.

Provided is a positioning method and a jig, capable of accurately aligning phases of a plurality of iron core pieces. The positioning method for a rotor core 3 in which a plurality of core pieces 1 are stacked, the iron core pieces including key portions 9, relatively rotates a fixed contact portion 13 and a rotary contact portion 15 being respectively contactable with one sides and the other sides of the key portions 9 in the circumferential direction, relatively moves the key portions 9 in the circumferential direction between the fixed contact portion 13 and the rotary contact portion 15 by the relatively rotating, and respectively brings the fixed contact portion 13 and the rotary contact portion 15 into contact with the one side and the other side of the key portion 9 of each core piece 1 in the circumferential direction, to hold the key portions 9 between the fixed contact portion 13 and the rotary contact portion 15 to align the phases of the plurality of the core pieces 1 stacked.

Provided is a collective board capable of improving work efficiency for obtaining individual circuit boards from a collective board in which the circuit boards are juxtaposed in a lattice shape. The collective board is provided with a product portion 3 in which a plurality of circuit boards 17 having a circuit pattern 15 on an insulating substrate 13 are juxtaposed in a first direction and a second direction intersecting each other in a lattice shape, a slit 7 spanning between at least ends of the product portion 3 in the first direction and penetrating, in a thickness direction, a portion between the circuit boards 17 adjacent to each other in the second direction, a coupling portion 9 coupling the circuit boards 17 adjacent to each other in the second direction at least at one end of the product portion 3 in the first direction, and grooves 11 spanning between ends of the product portion 3 in the second direction, being located between the circuit boards 17 and the coupling portion 9 adjacent to each other in the first direction and between the circuit boards 17 adjacent to each other in the first direction, and non-penetrating in the thickness direction.

Zusammenfassung wird geladen …

Provided is a welded part inspection device capable of easily and surely determining quality of a welded part while easily capturing an image of the welded part. The welded part inspection device 1 for inspecting a welded part 5 of a stator 3 in which adjacent coil ends 17 of a plurality of segment coils 10 are joined together by welding, includes an image-capturing unit 23 that captures an image of the welded part 5, a monitor 25 positioned on an opposite side in an image-capturing direction across the welded part 5 with respect to the image-capturing unit 23 to display a background image 31 for the welded part 5, a control unit 27 configured to cause the monitor 25 to display the background image 31 and cause the image-capturing unit 23 to capture the image of the welded part 5 together with the background image 31, and determine a shape of the welded part 5 in contrast with the background image 31 based on a captured image according to the image-capturing.

A stator for a rotating electrical machine including: a stator core having a plurality of slots; and a stator coil formed by segment coils, each of which is configured using a flat wire with a rectangular cross section, is inserted into different slots spaced apart from each other in a circumferential direction of the stator core, and has a pair of insertion portions that are inserted into the different slots and an interconnecting portion that interconnects the pair of insertion portions, wherein when Ns denotes a slot pitch, which is the pitch of the slots into which the pair of the insertion portions of each of the segment coils are inserted, and S denotes the total number of slots in the stator core, the following relational expression (1) is satisfied. Ns < S / 4 <img class="EMIRef" id="10d455a2-cade-4e79-b94c-a5c24a8b5608-ia01" />

A stator for a rotating electrical machine, wherein when the number of slots per pole per phase, which is a value obtained by dividing the number of the slots by the number of magnetic poles of a rotor and the number of phases of alternating current generated in a stator coil, is 2, and when P denotes a magnetic pole pitch, which is a value obtained by dividing the number of the slots by the number of the magnetic poles of the rotor, and k denotes the difference between a slot pitch, which is the pitch of the slots on a side where segment coils are inserted, and the magnetic pole pitch, one of the slot pitches in an outermost layer or an innermost layer of a stator core on the insertion side is set to P + 1 and the other is set to P - 1, and one of the slot pitch in a middle layer between the outermost layer and the innermost layer of the stator core on the insertion side or the pitch of the slots on a side where joint end portions joined to each other project is set to P + k and the other is set to P - k.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …