Wiring component for rotating electrical machine and method for manufacturing same

Abstract

The invention provides a wiring component for a rotary electric machine and a manufacturing method thereof, which can bend a conductor wire even in the vicinity of a flat-plate-shaped connecting part connected with a winding and can restrain large-scale. A first bus bar (31), which is a wiring component for a rotating electrical machine connected to an armature winding (221) of the rotating electrical machine (2), has a conductor wire (31M) comprising a conductive metal and an insulator (31I) covering a part of the conductor wire (31M), and the conductor wire (31M) has, at one end, a flat-plate-shaped connection part (311) connected to the armature winding (221). And a bent part (312) which is bent by bending processing is arranged near the connecting part (311). In the connection section (311) and the bent section (312), the conductor wire (31M) is not covered by the insulator (31I), and the cross-sectional shape of the conductor wire (31M) in a cross-section perpendicular to the direction in which the conductor wire (31M) extends is rectangular in the connection section (311) and is circular in the bent section (312).

Description

Technical Field

[0001] The present invention relates to a wiring component for a rotating electric machine and a method for manufacturing the wiring component for a rotating electric machine. Background Art

[0002] In the past, the present applicant proposed wiring parts described in Patent Documents 1 and 2 as wiring parts for connecting the winding of a rotating electric machine such as a motor to a terminal board. These wiring parts are formed by applying predetermined processing to an insulated covered electric wire formed by covering a conductor wire with a circular cross section made of a conductive metal with an insulator such as enamel, and the insulator is removed at one end connected to the winding and the other end connected to the terminal board to expose the conductor wire. At the end connected to the winding, the conductor wire is flattened and processed into a plate shape. One end of the wiring part processed into a plate shape is connected to the winding by welding such as TIG (Tungsten Inert Gas) welding.

[0003] In addition, the wiring parts described in Patent Documents 1 and 2 are bent at multiple locations so as to avoid interference with surrounding components and connect the winding to the terminal board. The portion of the wiring part described in Patent Document 1 that is covered by the insulator is bent at multiple locations. The portion of the wiring part described in Patent Document 2 that is covered by the insulator is bent at multiple locations, and the portion formed into a plate shape by removing the insulator is also bent in a manner that is bent in the direction of the plate thickness.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2014-207827

[0007] Patent Document 2: Japanese Patent Application Publication No. 2021-13263 Summary of the invention

[0008] Problems to be solved by the invention

[0009] As in the wiring component described in Patent Document 1, if the conductor wire is bent at the portion covered by the insulator, the insulator is stretched outside the bent portion. If the winding is welded in this state, if the distance between the welded portion and the bent portion is short, the insulator may be partially thinned due to the heat of welding. Therefore, it is necessary to extend the distance between the welded portion and the bent portion, and there is a problem that the wiring component may be enlarged depending on the positional relationship between the connection position with the winding and the terminal board.

[0010] In addition, when the portion formed into a plate shape by removing the insulator is bent as in the wiring component described in Patent Document 2, the portion connected to the winding is deformed according to the bending direction, which may hinder the connection with the winding. Therefore, there is a problem that the entire length of the wiring component is increased due to the restriction in the bending direction, and the wiring component may be enlarged.

[0011] The present invention has been made in view of the above circumstances, and an object thereof is to provide a wiring component for a rotating electrical machine and a method for manufacturing the same, which can bend a conductor wire even near a flat plate-shaped connection portion to a winding and can suppress enlargement.

[0012] Solutions to Solve Problems

[0013] The object of the present invention is to solve the above-mentioned problems and to provide a wiring component for a rotating electric machine, which is connected to the armature winding of the rotating electric machine, and has a conductor wire made of conductive metal and an insulator covering a portion of the conductor wire, wherein the conductor wire has a flat plate-shaped connecting portion connected to the armature winding at one end, and has a bent portion bent by bending near the connecting portion, wherein the conductor wire is not covered by the insulator at the connecting portion and the bent portion, and the cross-sectional shape of the conductor wire in a cross section perpendicular to the extending direction of the conductor wire is rectangular at the connecting portion and circular at the bent portion.

[0014] In addition, the purpose of the present invention is to solve the above-mentioned problems and provide a manufacturing method for a wiring part for a rotating electric machine connected to the armature winding of a rotating electric machine, using an insulated covered electric wire formed by covering a conductor wire made of a conductive metal with an insulator as a raw material, and comprising: a first step, in which a predetermined length of the insulator at the end of the raw material is removed; a second step, in which the conductor wire is bent at a portion after the insulator is removed to form a bent portion; and a third step, in which a portion of the conductor wire on the front end side of the bent portion is processed into a flat plate shape to form a connection portion connected to the armature winding.

[0015] Effects of the Invention

[0016] According to the wiring component for a rotating electric machine and the method for manufacturing the same according to the present invention, it is possible to suppress an increase in the size of the wiring component for a rotating electric machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a perspective view showing a rotating electrical machine assembly according to an embodiment of the present invention.

[0018] Figure 2(a) is a perspective view showing a part of the rotating electrical machine assembly before the welding process is performed. (b) is a perspective view showing a part of the rotating electrical machine assembly after the welding process is performed.

[0019] Figure 3 This is a structural diagram of the rotating motor assembly and the terminal board as viewed from the side.

[0020] Figure 4 This is a circuit diagram showing a configuration example of a circuit in a rotating electrical machine formed by an armature winding.

[0021] Figure 5 It is a perspective view showing one end portion in the longitudinal direction of the first bus bar, and one end portion and the other end portion of the U-phase armature winding connected to the connecting portion of the first bus bar.

[0022] Figure 6 It is a structural diagram of a first generatrix showing the periphery of the connection portion and the bent portion as viewed from a direction perpendicular to the connection portion.

[0023] Figure 7 (a) to (e) are perpendicular to the extension direction of the conductor line. Figure 6 Cross-sectional views at line AA, line BB, line CC, line DD and line EE.

[0024] Figure 8 This is an external view showing a state in which a portion of a conductor line not covered by an insulator is covered with an electrically insulating covering material at one end of a first bus bar.

[0025] Fig. 9 (a) to (d) are explanatory diagrams showing a method for manufacturing the first bus bar.

[0026] Explanation of symbols

[0027] 2—rotating electric machine, 221, 222, 223—armature windings, 221a, 221b, 222a, 222b, 223a, 223b—ends, 30—raw material wire, 301—conductor wire, 302—insulator, 31~33—first to third busbars, 311, 321, 331—connecting portion, 312, 322, 332—bending portion, 31I, 32I, 33I—insulator, 31M, 32M, 33M—conductor wire, 34~36—first to third connecting terminals. DETAILED DESCRIPTION

[0028] [Implementation Method]

[0029] Figure 1 It is a perspective view showing a rotating electrical machine assembly 1 including a wiring component for a rotating electrical machine according to an embodiment of the present invention together with a terminal block 4 . Figure 2(a) is a perspective view showing a part of the rotating electrical machine assembly 1 before a welding process is performed. Figure 2 (b) is a perspective view showing a part of the rotating electrical machine assembly 1 after the welding step. Figure 3 This is a structural diagram of the rotating electrical machine assembly 1 and the terminal block 4 as viewed from the side.

[0030] The rotating electrical machine assembly 1 includes a rotating electrical machine 2 and a bus bar unit 3 including first to third bus bars 31 to 33 as a plurality of wiring components for the rotating electrical machine. Figure 3 In FIG. 1 , a part of the rotating electrical machine 2 is cut away to illustrate its internal structure.

[0031] The rotating electric machine 2 is mounted on the vehicle as a driving source for traveling and as a generator for generating electricity during regenerative braking, and is connected to an inverter (not shown) via a bus unit 3 and a terminal board 4. The rotating electric machine 2 is a three-phase motor, and armature windings 221 to 223 described later and first to third pads 41 to 43 of the terminal board 4 are electrically connected by the bus unit 3.

[0032] The rotating electric machine 2 has a bottomed cylindrical housing 21, a stator or armature 22 fixed to the inner side of the housing 21, a rotor 23 arranged on the inner side of the armature 22, a shaft 24 penetrating the center portion of the rotor 23 and supported so as to be rotatable together with the rotor 23, and a disc-shaped cover member 25 made of molded resin that covers the opening portion of the housing 21.

[0033] The armature 22 is wound with armature windings 221 to 223 of U phase, V phase and W phase on the armature core 220, which is an annular iron core surrounding the rotor 23. More specifically, any one of the windings 221 to 223 of U phase, V phase and W phase is wound on a plurality of teeth provided on the armature core 220. The armature core 220 is made of a magnetic material such as steel. The armature windings 221 to 223 are flat insulated wires having a rectangular cross section. Parts of the armature windings 221 to 223 are exposed from the cover member 25 to the outside of the housing 21 and are molded on the cover member 25.

[0034] The rotor 23 includes a cylindrical rotor core 231 having a through hole through which the shaft 24 is inserted, and a plurality of magnets 232 arranged on the outer periphery of the rotor core 231. The magnets 232 are provided with magnetic poles in a manner that the S poles and the N poles are alternately arranged along the circumferential direction of the rotor core 231. The shaft 24 is rotatably supported by the housing 21 via a bearing (not shown), and rotates around the rotation axis O.

[0035] Figure 4 2 is a circuit diagram showing a configuration example of a circuit in the rotating electrical machine 2 formed by the armature windings 221 to 223. The U-phase armature winding 221, the V-phase armature winding 222, and the W-phase armature winding 223 are respectively connected at a plurality of locations (in Figure 4 The armature winding 221 of the U phase is wound around the armature core 220 to form a coil, and is connected to the neutral point 22n at the center of each. The U-phase current is supplied to one end 221a and the other end 221b of the armature winding 221 of the U phase. The V-phase current is supplied to one end 222a and the other end 222b of the armature winding 222 of the V phase. The W-phase current is supplied to one end 223a and the other end 223b of the armature winding 223 of the W phase.

[0036] One end 221a and the other end 221b of the U-phase armature winding 221, one end 222a and the other end 222b of the V-phase armature winding 222, and one end 223a and the other end 223b of the W-phase armature winding 223 are arranged in parallel with each other at a predetermined interval, and protrude to the outside from the cover member 25. One end 221a and the other end 221b of the U-phase armature winding 221, one end 222a and the other end 222b of the V-phase armature winding 222, and one end 223a and the other end 223b of the W-phase armature winding 223 protrude from the peripheral edge of the cover member 25 in parallel with the rotation axis O, and are arranged in a predetermined arrangement direction along the circumferential direction of the housing 21.

[0037] The busbar unit 3 includes first to third busbars 31 to 33, first to third connection terminals 34 to 36 respectively mounted on the first to third busbars 31 to 33, and a resin busbar support 37 for holding the first to third busbars 31 to 33. The busbar support 37 is formed of a molded body. The first to third busbars 31 to 33 are respectively linear wiring parts for rotating electrical machines.

[0038] The first to third busbars 31 to 33 respectively have conductor wires 31M, 32M, 33M made of a good conductive metal such as copper alloy and insulators 31I, 32I, 33I made of an insulator such as enamel. At both ends of the first to third busbars 31 to 33 in the longitudinal direction, the insulators 31I, 32I, 33I are removed to expose the conductor wires 31M, 32M, 33M. The conductor wires 31M, 32M, 33M in the portion covered by the insulators 31I, 32I, 33I have a circular cross-section. The first to third busbars 31 to 33 are bent at multiple locations in the portion where the conductor wires 31M, 32M, 33M are covered by the insulators 31I, 32I, 33I.

[0039] The first busbar 31 has a flat connecting portion 311 at one end thereof, which is connected to one end 221a and the other end 221b of the U-phase armature winding 221 of the rotating electric machine 2 by welding, and has a bent portion 312 bent by bending near the connecting portion 311. The connecting portion 311 is extended in an extension direction along the arrangement direction of the one end 221a and the other end 221b of the U-phase armature winding 221, and the one end 221a and the other end 221b of the U-phase armature winding 221 are welded at different positions in the extension direction of the connecting portion 311. This welding can be performed by TIG welding or laser welding, for example. The first connecting terminal 34 is welded or crimped at the other end of the first busbar 31.

[0040] The second busbar 32 has a flat connecting portion 321 at one end thereof connected to one end 222a and the other end 222b of the V-phase armature winding 222 of the rotary electric machine 2 by welding, and has a bent portion 322 bent by bending near the connecting portion 321. The connecting portion 321 is extended in the extension direction along the arrangement direction of the one end 222a and the other end 222b of the V-phase armature winding 222, and the one end 222a and the other end 222b of the V-phase armature winding 222 are welded at different positions in the extension direction of the connecting portion 321. A second connecting terminal 35 is welded or crimped to the other end of the second busbar 32.

[0041] The third busbar 33 has a flat connecting portion 331 connected to one end 223a and the other end 223b of the W-phase armature winding 223 of the rotary electric machine 2 by welding at one end, and has a bent portion 332 bent by bending near the connecting portion 331. The connecting portion 331 extends in the extension direction along the arrangement direction of the one end 223a and the other end 223b of the W-phase armature winding 223, and the one end 223a and the other end 223b of the W-phase armature winding 223 are welded at different positions in the extension direction of the connecting portion 331. The third connecting terminal 36 is welded or crimped to the other end of the third busbar 33.

[0042] The first connection terminal 34 is connected to the first gasket 41 of the terminal board 4 by a bolt 44, the second connection terminal 35 is connected to the second gasket 42 of the terminal board 4 by a bolt 45, and the third connection terminal 36 is connected to the third gasket 43 of the terminal board 4 by a bolt 46. The first to third gaskets 41, 42, 43 are connected to the inverter through wiring that is omitted from the figure.

[0043] Figure 51 is a perspective view showing one end portion of the first bus bar 31 in the longitudinal direction, and one end portion 221a and the other end portion 221b of the U-phase armature winding 221 connected to the connection portion 311 of the first bus bar 31. Figure 5 In the figure, the extending direction and arrangement direction of one end 221a and the other end 221b of the U-phase armature winding 221 are indicated by double arrows. In the present embodiment, the extending direction of one end 221a and the other end 221b of the armature winding 221 is parallel to the rotation axis O of the shaft 24. The arrangement direction of one end 221a and the other end 221b of the armature winding 221 is the circumferential direction centered on the rotation axis O. The armature winding 221 has an insulating coating layer 221I made of enamel formed on the outer peripheral surface of the conductor 221M made of copper alloy, and the insulating coating layer 221I is removed at the portion connected to the connection portion 311 of the first busbar 31 to expose the conductor 221M.

[0044] Figure 6 3 is a structural diagram of the first busbar 31 showing the periphery of the connection portion 311 and the bent portion 312 as viewed from a direction perpendicular to the connection portion 311. Figure 6 In FIG. 1 , the bent portion 312 of the first bus bar 31 is indicated by gray, and the central axis C of the conductor line 31M is indicated by a dashed line. In the following description, the extending direction of the conductor line 31M refers to the direction along the central axis C.

[0045] The conductor wire 31M is not covered by the insulator 31I in the connection portion 311 and the bent portion 312 of the first busbar 31. The shape of the connection portion 311 observed from the one end 221a and the other end 221b side of the armature winding 221 to be connected is a rectangular shape that is long in the arrangement direction of the one end 221a and the other end 221b. The connection portion 311 is arranged to face the side surfaces of the ends 221a and 221b of the armature winding 221 in a direction perpendicular to the extending direction and the arrangement direction of the ends 221a and 221b of the armature winding 221.

[0046] The first busbar 31 has a straight portion 313 that is continuous with the bent portion 312 and extends in the extending direction of the one end 221a and the other end 221b of the armature winding 221. The conductor wire 31M is not covered by the insulator 31I in a portion of the straight portion 313 and on the bent portion 312 side, and is covered by the insulator 31I in the other portions. That is, the insulator 31I covers the outer peripheral surface of the conductor wire 31M at a position farther from the connecting portion 311 than the bent portion 312 in the extending direction of the conductor wire 31M.

[0047] In addition, the first busbar 31 has a gradual change portion 314 between the connection portion 311 and the bent portion 312, in which the cross-sectional shape of the cross section perpendicular to the central axis C gradually changes, and an extension portion 315 extending parallel to the length direction of the connection portion 311. The gradual change portion 314 is formed continuously with the connection portion 311. The extension portion 315 is formed continuously with the bent portion 312 and the gradual change portion 314. In addition, the first busbar 31 may not have the extension portion 315, and the gradual change portion 314 may be formed continuously with the connection portion 311 and the bent portion 312.

[0048] If the distance between the connection portion 311 and the bent portion 312 in the extension direction of the conductor wire 31M is set to D1, and the length of the connection portion 311 in the longitudinal direction is set to L1, D1 is shorter than L1. Thus, the length of the first bus bar 31 is suppressed to achieve miniaturization of the first bus bar 31, and Figure 1 as well as Figure 2 As shown, when the end portions 221a, 221b, 222a, 222b, 223a, 223b of the armature windings 221, 222, 223 of each phase are arranged in the circumferential direction of the housing 21, it is easy to avoid interference between the first to third bus bars 31 to 33.

[0049] The conductor wire 31M is bent at a right angle relative to the connection portion 311 in the short side direction of the connection portion 311 at the bend portion 312. That is, in the portion (connection portion 311, gradient portion 314 and extension portion 315) closer to the front end side of the first busbar 31 than the bend portion 312, the central axis C of the conductor wire 31M is parallel to the arrangement direction of one end 221a and the other end 221b of the armature winding 221, and in the straight portion 313, the central axis C of the conductor wire 31M is parallel to the extension direction of one end 221a and the other end 221b of the armature winding 221. However, the bending angle of the bend portion 312 is not limited to a right angle (90°), and may be an obtuse angle or an acute angle.

[0050] Figure 7 (a) to (e) are perpendicular to the extending direction of the conductor line 31M. Figure 6 Cross-sectional views at line AA, line BB, line CC, line DD and line EE. Figure 7 (a) shows a cross section of the connection portion 311, Figure 7 (b) shows a cross section of the gradient portion 314. Figure 7 (c) shows the cross section of the extension portion 315, Figure 7 (d) represents the cross section of the curved portion 312, Figure 7 (e) shows a cross section of the straight portion 313 .

[0051] The cross-sectional shape of the conductor wire 31M in the cross section perpendicular to the extension direction of the conductor wire 31M is a rectangular shape that is long in the extension direction of the one end 221a and the other end 221b of the armature winding 221 at the connection portion 311, and is circular at the extension portion 315, the curved portion 312, and the straight portion 313. The cross-sectional shape of the gradual portion 314 gradually changes from a rectangular shape to a circular shape as it approaches the curved portion 312 from the connection portion 311 side. In addition, the cross-sectional shape of the curved portion 312 is not limited to a perfect circle, and may be a circular shape that is slightly deformed due to plastic deformation during bending.

[0052] Figure 8 This is an appearance diagram showing a state in which the portion of the conductor wire 31M not covered by the insulator 31I at one end of the first busbar 31, namely the connecting portion 311, the gradient portion 314, the extension portion 315, the curved portion 312 and a part of the straight portion 313, together with one end 221a and the other end 221b of the armature winding 221, are covered by an electrically insulating covering material 5. Figure 8 In the figure, the covering material 5 is shown in gray, and the first busbar 31 and one end 221a and the other end 221b of the armature winding 221 covered by the covering material 5 are shown in dotted lines. The covering material 5 is formed in a range covering a part of the insulator 31I of the first busbar 31 and the insulating covering layer 221I of the armature winding 221.

[0053] The process of forming the covering material 5 can be performed, for example, by powder coating. In this case, the cover member 25 protruding from one end 221a and the other end 221b of the armature winding 221 is directed downward in the vertical direction, and immersed in a powder flow groove where the insulating powder flows while the connecting portion 311 and the like are heated, so that the insulating powder is melted. In addition, the covering material 5 can also be formed by, for example, electrodeposition coating, without being limited to powder coating. In addition, the covering material 5 is formed similarly not only for the first busbar 31, but also for the second busbar 32 and the third busbar 33.

[0054] like Figure 6 As shown in FIG. 1 , if the distance between the portion covered by the insulator 31I from the bent portion 312 to the straight portion 313 in the extending direction of the conductor wire 31M, that is, the distance between the bent portion 312 and the insulator 31I along the extending direction is set to D2, D2 is shorter than D1. Thus, the formation range of the covering material 5 in the extending direction of the one end 221a and the other end 221b of the armature winding 221 can be shortened, and the covering material 5 can be easily formed.

[0055] Next, refer to Fig. 9 (a) to (d) illustrate an example of a method for manufacturing the first bus bar 31. Fig. 9(a) is a perspective view showing one end of a raw material wire 30, which is a raw material of the first busbar 31. The raw material wire 30 is an insulated covered electric wire in which a conductor wire 301 made of a conductive metal is covered with an insulator 302, and is cut to the same length as the finished product, i.e., the first busbar 31, and shaped into a straight line.

[0056] The first busbar 31 is manufactured by a manufacturing method having the following steps: a first step, in which a predetermined length of the insulator 302 in the end of the raw material wire 30 is removed; a second step, in which the portion of the conductor wire 301 after the insulator 302 is removed is bent to form a bent portion 312; and a third step, in which a portion of the conductor wire 301 closer to the front end side than the bent portion 312 is processed into a flat plate shape to form a connecting portion 311.

[0057] Fig. 9 (b) is a perspective view showing the raw wire 30 processed in the first step. The length after removing the insulator 302 in the first step is the length of the connecting portion 311, the gradient portion 314, the extension portion 315 and the bending portion 312 in the extension direction of the conductor wire 31M in the first busbar 31 plus the above-mentioned distance D2.

[0058] Fig. 9 (c) is an explanatory diagram showing the second step. In the second step, a cylindrical jig 6 having a radius corresponding to the curvature radius of the inner portion of the curved portion 312 is used to bend and plastically deform the conductor wire 301 along the outer peripheral surface 6a of the jig 6 to form the curved portion 312. The distance D1 between the connecting portion 311 and the curved portion 312 in the extension direction of the conductor wire 31M in the first busbar 31 is (refer to Figure 6 ) is, for example, 3 times or less, and more preferably 2 times or less, the diameter of the conductor wire 301 in the raw wire 30. Fig. 9 In the example shown in (c) of FIG. 1 , the magnification is 2. The diameter of the conductor wire 301 is the same as the diameter of the conductor wire 31M in the straight portion 313 of the first bus bar 31 .

[0059] Fig. 9 (d) is an explanatory diagram showing the third step. In the third step, the front end of the conductor wire 301 is pressed and flattened to form the connection portion 311. Fig. 9 In the example shown in (d), a die 7 having a lower die 71 and an upper die 72 is used, and the conductor wire 301 is sandwiched between the lower die 71 and the upper die 72 for extrusion to form the connection portion 311 and the gradient portion 314. The lower die 71 and the upper die 72 are formed with holding grooves 711 and 721 for holding a part of the curved portion 312 and the straight portion 313 formed in the second step.

[0060] After the bent portion 312 is formed in the second step, the connection portion 311 is formed in the third step while the bent portion 312 is held by the lower mold 71 and the upper mold 72, thereby improving the shape accuracy of the first busbar 31. That is, when the connection portion 311 is formed first and then the conductor wire 301 is bent to form the bent portion 312, the angle of the straight portion 313 relative to the connection portion 311 is easily deviated when the conductor wire 301 is bent, and when the busbar unit 3 is combined with the rotary electric machine 2, the connection portion 311 may not be directly opposite to the one end 221a and the other end 221b of the armature winding 221, but according to the present embodiment, the relative angles of the straight portion 313 and the connection portion 311 before and after the bent portion 312 can be made to match with high accuracy.

[0061] The second bus bar 32 and the third bus bar 33 are also manufactured by the same manufacturing method as the first bus bar 31 .

[0062] (Effects of Embodiments)

[0063] According to the above-described embodiment, the conductor wire 31M can be bent near the connection portion 311 while maintaining the shape accuracy of the first bus bar 31, thereby suppressing an increase in size of the first bus bar 31. The same applies to the second bus bar 32 and the third bus bar 33.

[0064] (Summary of Implementation Methods)

[0065] Next, the technical ideas grasped from the above-described embodiments are described by citing the symbols in the embodiments. However, each symbol in the following description is not limited to specifically indicating the constituent elements in the claims as the components in the embodiments.

[0066] [1] A wiring part 31 for a rotating electric machine, which is a wiring part for a rotating electric machine (first busbar 31) connected to the armature winding 221 of the rotating electric machine 2, wherein the wiring part 31 has a conductor wire 31M made of conductive metal and an insulator 31I covering a portion of the conductor wire 31M, wherein the conductor wire 31M has a flat connecting portion 311 connected to the armature winding 221 at one end, and has a bent portion 312 bent by bending near the connecting portion 311, wherein the conductor wire 31M is not covered by the insulator 31I at the connecting portion 311 and the bent portion 312, and the cross-sectional shape of the conductor wire 31M in a cross section perpendicular to the extending direction of the conductor wire 31M is rectangular at the connecting portion 311 and circular at the bent portion (312).

[0067] [2] According to the wiring part 31 for a rotating electrical machine described in [1] above, the shape of the connecting portion 311 as viewed from the armature winding 221 side of the connection object is a rectangular shape, and the conductor wire 31M is bent at the bending portion 312 relative to the connecting portion 311 in the short side direction of the connecting portion 311.

[0068] [3] According to the wiring part 31 for a rotating electrical machine described in [2] above, the plurality of end portions 221a, 221b of the armature winding 221 are connected to the connecting portion 311, and a distance D1 between the connecting portion 311 and the bent portion 312 is shorter than a length L1 of the connecting portion 311 in the longitudinal direction.

[0069] [4] A wiring part 31 for a rotating electrical machine according to any one of [1] to [3] above, wherein the insulator 31I covers the outer peripheral surface of the conductor wire 31M at a position farther from the connecting portion 311 than the bending portion 312 in the extending direction, and a distance D2 between the bending portion 312 and the insulator 31I along the extending direction is shorter than a distance D1 between the connecting portion 311 and the bending portion 312.

[0070] [5] A method for manufacturing a wiring part 31 for a rotating electric machine, wherein the wiring part 31 for a rotating electric machine is connected to the armature winding 221 of the rotating electric machine 2, and the manufacturing method for the wiring part 31 for a rotating electric machine uses an insulated covered wire raw material wire 30 formed by covering a conductor wire 301 made of a conductive metal with an insulator 302 as a raw material, and comprises: a first step in which the insulator 302 at the end of the raw material is removed by a predetermined length; a second step in which the conductor wire 301 is bent to form a bent portion 312 after the insulator 302 is removed; and a third step in which a portion of the conductor wire 301 closer to the front end side than the bent portion 312 is processed into a flat plate shape to form a connection portion 311 connected to the armature winding 221.

[0071] The embodiments of the present invention have been described above, but the above embodiments do not limit the invention involved in the claims. In addition, it should be noted that the combination of features described in the embodiments is not necessarily all necessary for solving the problems of the invention.

Claims

1. A wiring component for a rotating electrical machine, which is a wiring component for a rotating electrical machine connected to an armature winding of the rotating electrical machine, characterized in that: The wiring component for a rotating electrical machine includes a conductor wire made of a conductive metal and an insulator covering a portion of the conductor wire. The conductor wire has a flat plate-shaped connection portion connected to the armature winding at one end, and has a bent portion bent by bending near the connection portion. At the connecting portion and the bending portion, the conductor wire is not covered by the insulator. The cross-sectional shape of the conductor wire in a cross section perpendicular to the extending direction of the conductor wire is rectangular at the connecting portion and circular at the bent portion.

2. The wiring component for a rotating electrical machine according to claim 1, wherein: The shape of the connecting portion as viewed from the armature winding side of the connecting object is a rectangular shape, The conductor wire is bent at the bent portion relative to the connecting portion in a short-side direction of the connecting portion.

3. The wiring component for a rotating electrical machine according to claim 2, wherein: The connecting portion connects a plurality of ends of the armature winding. A distance between the connecting portion and the bent portion is shorter than a length of the connecting portion in a longitudinal direction.

4. The wiring component for a rotating electrical machine according to any one of claims 1 to 3, characterized in that: The insulator covers the outer peripheral surface of the conductor wire at a position farther from the connection portion than the bent portion in the extending direction. A distance between the bent portion and the insulator along the extending direction is shorter than a distance between the connecting portion and the bent portion.

5. A method for manufacturing a wiring component for a rotating electrical machine, wherein the wiring component for a rotating electrical machine is connected to an armature winding of the rotating electrical machine, wherein the method for manufacturing a wiring component for a rotating electrical machine is characterized in that: The insulated wire is made of a conductor wire made of a conductive metal covered with an insulator and has: A first step, in which a predetermined length of the insulator is removed from an end portion of the raw material; a second step of bending the conductor wire from which the insulator has been removed to form a bent portion; as well as A third step is to process a portion of the conductor wire on the front end side of the bent portion into a flat plate shape to form a connection portion to be connected to the armature winding.

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