JP7433176B2 - Rotating electric machine stator wiring board, rotating electric machine stator, and rotating electric machine - Google Patents

Description

The present application relates to a wiring board for a stator of a rotating electrical machine, a stator for the rotating electrical machine, and a rotating electrical machine.

There is a need for a wiring structure that facilitates assembly of a rotating electrical machine and improves productivity, and a stator structure that allows the rotating electrical machine to be downsized.

In response to this request, we manufactured a connection plate in which the connecting conductor was formed into a spiral shape, part of it was covered with an insulating material, and then the connecting conductor was cut at a position in the circumferential direction, and through-holes were provided in the connecting conductor. , a method is disclosed in which a winding end portion of a stator is inserted into a through hole and connected to a connecting conductive wire by soldering (for example, Patent Document 1).

Patent No. 5348199

However, in the connection plate of Patent Document 1, since the spirally formed connecting conductive wires are arranged on the same plane, the coil needs to be enlarged in the radial direction, resulting in a problem that the diameter of the motor increases.

The present application discloses a technology for solving the above-mentioned problems, and includes a connection plate for a stator of a rotating electrical machine that can reduce the outer diameter of a spirally formed connection conductor, and a rotation control board using this connection plate. The purpose is to provide stators for electric machines and rotating electric machines.

A wiring board for a stator of a rotating electric machine disclosed in the present application includes a pedestal having a plurality of concentric grooves, the pedestal includes a notch for cutting a connecting conductor according to an applicable wiring method, A connecting conductor formed into a spiral shape is fixed in the notch, and a conductor protrusion is provided in the axial direction at the connection point with the winding end of the connecting conductor, and at least the inner and outer circumferential sides of the connection point are provided. It has a structure in which one of the connection conductors is provided with a conductor recess.
A stator for a rotating electrical machine disclosed in the present application includes the above-mentioned wiring board for the rotating electrical machine stator and a plurality of winding assemblies in which windings are wound around a laminated core equipped with an insulator, and the winding assemblies are They are arranged in an annular shape and press-fitted into the frame, and the winding end portions of the winding assembly are connected to the connecting conductors of the wiring board.
The rotating electric machine disclosed in the present application includes a stator of the above-mentioned rotating electric machine and a rotor disposed on the inner peripheral side of the stator.

According to the connection plate for a stator of a rotating electrical machine disclosed in the present application, a connection plate can be obtained in which the outer diameter of the spirally formed connection conducting wire can be reduced.
According to the stator for a rotating electrical machine disclosed in the present application, a stator for a rotating electrical machine is provided that includes a connection plate that can reduce the outer diameter of a spirally formed connecting conducting wire.
According to the rotating electrical machine disclosed in the present application, a rotating electrical machine using a stator equipped with a connection plate that can reduce the outer diameter of a spirally formed connection conducting wire can be obtained.

1 is a sectional view of a rotating electrical machine according to a first embodiment. 1 is a perspective view of a stator core of a rotating electrical machine according to a first embodiment; FIG. 1 is a structural diagram of a stator insulator of a rotating electrical machine according to a first embodiment; FIG. 1 is a structural diagram of a stator insulator of a rotating electrical machine according to a first embodiment; FIG. 1 is a structural diagram of a stator insulator of a rotating electrical machine according to a first embodiment; FIG. 1 is a perspective view of a winding assembly of a rotating electrical machine according to a first embodiment; FIG. FIG. 2 is a structural diagram of a pedestal for a wiring board of a rotating electrical machine according to Embodiment 1; FIG. 2 is a structural diagram of a pedestal for a wiring board of a rotating electrical machine according to Embodiment 1; FIG. 2 is a structural diagram of a pedestal for a wiring board of a rotating electrical machine according to Embodiment 1; FIG. 2 is a structural diagram of a pedestal for a wiring board of a rotating electrical machine according to Embodiment 1; FIG. 2 is an explanatory diagram of a connection plate (before connection conductor wires are cut) of the rotating electric machine according to the first embodiment. FIG. 2 is a wiring diagram of the rotating electric machine according to the first embodiment. FIG. 2 is an explanatory diagram of a wiring board (after cutting a connecting conductor) of the rotating electric machine according to the first embodiment. FIG. 3 is an explanatory diagram of the connection between the connecting wire bent in the axial direction of the connection plate of the rotating electric machine and the winding end portion according to the first embodiment. FIG. 2 is an explanatory diagram of a stator assembly (wiring plate arrangement) of the rotating electric machine according to the first embodiment. FIG. 3 is an explanatory diagram of electrode welding related to the stator of the rotating electric machine according to the first embodiment. FIG. 2 is an explanatory diagram of a stator assembly (mold) of a rotating electrical machine according to the first embodiment. 3 is a flowchart of manufacturing the rotating electric machine according to Embodiment 1. FIG. FIG. 7 is a structural diagram of a wiring board pedestal in a modification of the rotating electric machine according to the first embodiment. FIG. 7 is a structural diagram of a wiring board pedestal in a modification of the rotating electric machine according to the first embodiment. FIG. 7 is a structural diagram of a wiring board pedestal in a modification of the rotating electric machine according to the first embodiment. FIG. 7 is a structural diagram of a wiring board pedestal in a modification of the rotating electric machine according to the first embodiment. FIG. 2 is a wiring diagram of a rotating electric machine according to a second embodiment. FIG. 7 is an explanatory diagram of a connection plate (before connection conductor wires are cut) of a rotating electric machine according to a second embodiment. FIG. 7 is an explanatory diagram of a wiring board (after cutting a connecting conductor) of a rotating electric machine according to a second embodiment. FIG. 7 is an explanatory diagram of a connection between a connecting wire bent in the axial direction of a connection plate of a rotating electric machine and a winding end portion according to a second embodiment; FIG. 7 is an explanatory diagram of electrode welding related to a stator of a rotating electric machine according to a second embodiment.

Embodiment 1.
In Embodiment 1, a spirally formed connecting conductor is fixed with adhesive to a pedestal having a plurality of concentric grooves, and a notch for cutting the connecting conductor is provided. A space is provided on the inner wall of the section to pass the electrode, the connecting conductor is cut according to the applicable wiring method, and a convex portion of the conductor is provided in the axial direction at the connection point with the winding terminal section, and the connection point is This invention relates to a wiring connection plate for a stator of a rotating electric machine, which has conducting wire recesses on the inner and outer circumferential sides thereof. Moreover, Embodiment 1 relates to a stator of a rotating electric machine including the connection plate of the stator of the rotating electric machine, and a rotating electric machine including the stator of the rotating electric machine.

The connection plate of the stator of the rotating electrical machine, the stator of the rotating electrical machine, and the rotating electrical machine according to Embodiment 1 will be described below with reference to FIG. 1, which is a sectional view of the rotating electrical machine, FIG. 2, which is a perspective view of the stator core, and a structural diagram of the stator insulator. 3A to 3C, FIG. 4 which is a perspective view of the winding assembly, FIGS. 5A to 5C which are structural diagrams of the wiring board pedestal, and FIG. 6 which is an explanatory diagram of the wiring board (before cutting the connecting conductor). Figure 7 is a wiring diagram of a rotating electric machine; Figure 8 is an explanatory diagram of a connection plate (after cutting the connection conductor); and Figure 9 is an explanatory diagram of the connection plate (after cutting the connection conductor), and the connection between the connection conductor bent in the axial direction of the connection plate and the winding terminal. FIG. 10 is an explanatory diagram of the stator assembly (wiring plate arrangement) of the rotating electrical machine; FIG. 12 is an explanatory diagram of electrode welding related to the stator of the rotating electrical machine; and FIG. 12 is an explanatory diagram of the stator assembly (mold). The explanation will be made based on FIG. 13, which is a flowchart of manufacturing the rotating electric machine, FIG. 14, which is a flowchart of manufacturing the rotating electric machine, and FIGS. 15A to 15C, and FIG. 16, which are structural diagrams of a modified example of a base for a wiring board.
In each figure, the same or corresponding parts are indicated by the same reference numerals, and redundant explanations will be omitted.

First, the overall structure of rotating electrical machine 100 according to the first embodiment will be described based on FIG. 1, which is a cross section perpendicular to the axial direction of rotating electrical machine 100.
First, the components of the rotating electrical machine 100 will be explained, and then the functions and relationships of each component will be explained.
The rotating electric machine 100 includes a stator 10, a rotor 30, a connection side bracket 50a, and a non-connection side bracket 50b.
Stator 10 includes a frame 60, a winding assembly 20, a power connector 40, and leads 16.
The winding assembly 20 includes a laminated core 11, a connection side insulator 13a, a non-connection side insulator 13b, a winding conductor 12a, a connection plate 17, and a connection conductor 15.
In the following description, when the connection side insulator 13a and the non-connection side insulator 13b are described together, they will be referred to as the insulator 13. Further, the winding conductor 12a will be referred to as a conductor 12a, and the connection conductor 15 will be appropriately referred to as a conductor 15.

In the winding assembly 20, a winding 12 is formed by winding a conducting wire 12a around the teeth 11b of a laminated core 11 via an insulator 13. The winding assembly 20 is arranged in an annular manner and is press fit or shrink fit into the frame 60.
The stator 10 includes a frame 60, a winding assembly 20 arranged annularly on the frame 60, and a connection plate 17 arranged on the connection side of the winding assembly 20.
The rotor 30 having a permanent magnet is arranged on the inner peripheral side of the stator 10, and its rotating shaft 31 is rotatably held by a wire connection side bracket 50a and a non-wire connection side bracket 50b.
The stator 10 is provided with a lead wire 16 and a power connector 40 for connecting the winding end portion 12b of the winding assembly 20 to an external power source.
A conductive wire 15 for connecting the winding end portion 12b of the winding assembly 20 corresponding to the neutral point of the three-phase alternating current is arranged on the wiring board 17. Further, on the wiring board 17, there are conductive wires 15 for connecting the winding terminal portions 12b of the winding assembly 20 corresponding to the U, V, and W phases of the three-phase AC to the lead wires 16 that connect the power connector 40. It is located.

In the following explanation, the rotational axis direction (horizontal direction in Figure 1) is referred to as the axial direction (Z), the rotational axis center direction (vertical direction in Figure 1) is referred to as the radial direction (R), and the rotational direction around the rotational axis is referred to as the radial direction (R). The direction will be defined as the circumferential direction (P).
Note that in the axial direction (Z), the side on which the wiring board 17 is installed will be described as a + side, and the opposite side will be described as a - side.

The structure of the laminated core 11 will be explained based on FIG. 2, which is a perspective view of the laminated core 11.
Note that the axial direction (Z), radial direction (R), and circumferential direction (P) explained in FIG. 1 are described for clarity.
The laminated core 11 is formed by a plurality of magnetic steel plates laminated in the axial direction.
A yoke portion 11a having a long shape in the circumferential direction (P) is formed on the outer peripheral side of the laminated core 11. Teeth portions 11b are formed on the inner circumferential side of the yoke portion 11a, and protrude toward the inner circumferential side from a circumferential center position of the yoke portion 11a.
A protruding portion 11c having a shape that spreads on both sides in the circumferential direction (P) is formed at the end portion on the inner peripheral side of the teeth portion 11b.

The structure of the insulator 13 will be explained based on FIGS. 3A to 3C.
Here, FIG. 3A is a perspective view of the connection side insulator 13a mounted on the connection plate side (+ side) end of the laminated core 11 in the axial direction (Z). FIG. 3B is a perspective view of the non-connection side insulator 13b attached to the end of the laminated core 11 on the side opposite to the connection plate (-side) in the axial direction (Z). FIG. 3C is a top plan view of the connection side insulator 13a.
As is clear from the figure, the connection side insulator 13a on the axially positive side of the laminated core 11 and the non-connection side insulator 13b on the axially negative side of the laminated core 11 are different in shape.

First, the connection side insulator 13a mounted on the axial direction (Z) + side of the laminated core 11 will be described.
The connection side insulator 13a includes an outer flange 13a1, an inner flange 13a2, and a body 13c1. The outer flange 13a1 connects the yoke 11a of the laminated core 11, the inner flange 13a2 connects the protrusion 11c of the laminated core 11, and the body 13c1 connects the teeth 11b of the laminated core 11 from the axial direction (Z) + side. cover.

A conducting wire groove 13d is formed in the outer flange portion 13a1 of the wire connection side insulator 13a. An end portion of the conducting wire 12a forming the winding 12 is inserted into the conducting wire groove 13d in such a manner that it projects outward from the inside in the radial direction (R) of the outer flange portion 13a1.
An outer flange outer wall 13e is formed on the outer flange portion 13a1, and the conducting wire 12a that protrudes during connection is routed along the outer flange outer wall 13e.
Moreover, a wiring board arrangement surface 13f for arranging the wiring board 17 is formed on the outer flange portion 13a1. The height in the axial direction (Z) of the inner flange portion 13a2 is the same as the height of the wiring board arrangement surface 13f, and the wiring board 17 is arranged between the inner flange portion 13a2 and the wiring board arrangement surface 13f.

Next, the non-connection side insulator 13b attached to the axial direction (Z) - side of the laminated core 11 will be explained.
The non-connection side insulator 13b is composed of an outer flange 13b1, an inner flange 13b2, and a body 13c2. The outer flange portion 13b1 covers the yoke portion 11a, the inner flange portion 13b2 covers the protrusion portion 11c of the laminated core 11, and the body portion 13c2 covers the teeth portion 11b of the laminated core 11 from the axial direction (Z) − side.

The structure of the winding assembly 20 will be explained based on FIG. 4, which is a perspective view of the winding assembly 20.
The connection side insulator 13a is attached to the laminated core 11 from the axial direction (Z) + side, and the opposite connection side insulator 13b is attached from the axial direction (Z) - side. A winding assembly 20 is constructed by winding the winding 12 around the laminated core 11 to which the insulator 13 is attached.
The winding 12 is composed of a conducting wire 12a that is wound around the teeth 11b of the laminated core 11 via an insulator 13. Further, a sheet-like insulating member (not shown) is arranged between the laminated core 11 and the wound conductive wire 12a to ensure insulation.

Further, in the winding assembly 20, the winding 12 is wound through another winding assembly 20 and the insulator 13b on the opposite connection side, and the two windings constitute one set of continuous winding.

The structure of the pedestal 14a for the wiring board 17, which has a step in which the groove bottom surface is higher on the inner circumferential side than on the outer circumferential side, will be described with reference to FIGS. 5A to 5C and FIG. 6.
Note that a pedestal 14b whose groove bottom surface is on the same plane as the pedestal 14a which has a step on the groove bottom surface will be described at the end of the first embodiment as a modification example.
5A is a plan view of the pedestal 14a, FIG. 5B is a side view of the pedestal 14a, FIG. 5C is a sectional view taken along line AA in FIG. 5A, and FIG. 6 is a perspective view of the pedestal 14a.

The pedestal 14a is made of a highly rigid and elastic insulating material, such as ABS (acrylonitrile-butadiene-styrene) resin, for arranging the connecting conductor 15.
The pedestal 14a is provided with a plurality of concentric grooves 14a1 in which the conducting wires 15 are arranged.

In order to create a connection member for the U, V, and W phases of the three-phase alternating current and the neutral line, a notch 14a2 is provided in the pedestal 14a as a space for cutting the conducting wire 15. In order to prevent the electrode 70a that contacts the conductive wire 15 from the axial direction (Z) + side from interfering with the pedestal 14a during welding, the inner wall recess 14a3 of the notch 14a2 has a recessed structure toward the inner circumferential side.
In order to pass the welding electrode 70b through the inner wall of the notch portion 14a2, a portion of the inner wall on the axial direction (Z) side is removed to provide an inner wall tunnel portion 14a4 having a tunnel shape.
As will be explained later, the electrode 70b inserted from the inner peripheral side of the stator 10 is arranged from the inner wall tunnel portion 14a4 toward the axial direction (Z) − side of the connection plate 17, and the electrode 70a extends from the axial direction (Z) + side. The conducting wire 15 and the winding end portion 12b or the lead wire 16 are sandwiched and welded.

A winding start portion 14a5 is provided on the inner wall of the pedestal 14a, and when forming the conducting wire 15 into a spiral shape, the conducting wire 15 at the beginning of winding is hooked onto the winding start portion 14a5 and then winding is started.

Next, a procedure for arranging the connecting conductive wire 15 on the pedestal 14a and forming the wiring board 17 will be explained.
Using a jig (not shown), the conductive wire 15 is formed into a spiral shape having three turns, placed inside the groove 14a1 of the pedestal 14a, and fixed with an adhesive 19.
FIG. 7 is a plan view of the molded conductive wire 15 fixed to the pedestal 14a.

Next, a specific method and procedure for configuring the connection plate 17 when the rotating electrical machine 100 has a three-phase AC 2Y connection will be described based on FIGS. 8 to 10.
In Embodiment 1, an example will be described in which the present invention is applied to a rotating electrical machine provided with a three-phase AC 2Y connection in which two windings of each phase are connected in parallel, as shown in FIG.
FIG. 9 is a diagram of the three-phase AC 2Y connection shown in FIG. 8 after the conductor 15 is cut. 9 also shows the connection between the winding end portion 12b of the winding assembly 20 and the conducting wire 15, and the connection between the lead wire 16 connected to the power connector 40 and the conducting wire 15.
In FIG. 9, the circle mark (A) indicates the connection between the winding end portion 12b of the winding assembly 20 and the conducting wire 15, which is necessary for three-phase AC 2Y connection. Moreover, the square mark (B) indicates the connection between the lead wire 16 and the conducting wire 15 which are connected to the three-phase AC U, V, and W phase power connector 40.
In addition, in FIG. 9, the neutral point of U, V, and W phases of three-phase alternating current is also described, and the corresponding phase is described as (U), for example.
FIG. 10 is an explanatory diagram of processing of the conductive wire 15 at the connection point between the winding end portion 12b and the lead wire 16.

After fixing the conductive wire 15 to the pedestal 14a to form the connection member necessary for configuring the U, V, W phases and the neutral point of the three-phase AC, a die of a punch is inserted into the notch 14a2 of the pedestal 14a, The conductive wire 15 is punched out from the axial direction (Z) + side and cut.
The innermost conductive wire 15 of the three turns of the conductive wire 15 is cut at positions 15°, 165°, and 345° clockwise from the winding start portion 14a5. The second conducting wire 15 from the inner peripheral side is cut at positions of 45° and 285° clockwise from the winding start portion 14a5. The outermost conductive wire 15 is cut at positions of 135° and 315° clockwise from the winding start portion 14a5.

Next, a process of forming the conducting wire 15 at the connection point between the winding end portion 12b and the lead wire 16, which is performed after cutting the conducting wire 15, will be described based on FIG.
In FIG. 10, a case is explained in which the winding end portion 12b is connected (welded) to the second round of the conducting wire 15 from the inner circumferential side.
After cutting the conducting wire 15, the welded portion of the conducting wire 15 is bent so as to protrude in the Z+ direction to form a conducting wire convex portion 15a. Specifically, a jig with protrusions (not shown) applies pressure to the welded portion of the conductor 15 from the axial direction (Z) + side and the axial direction (Z) - side to form the conductor convex portion 15a. .
Furthermore, the conductive wire 15 on the outer circumferential side and the inner circumferential side of the conductive wire convex portion 15a is bent so as to protrude in the axial direction (Z)-direction to form the conductive wire recess 15b.

In FIG. 10, a case has been described in which the winding end portion 12b is welded to the second round of the conducting wire 15 from the inner circumferential side. When welding the winding end portion 12b to the conducting wire 15 in the first turn from the inner circumferential side, the conducting wire convex portion 15a is formed in the conducting wire 15 in the first turn, and the conducting wire concave portion 15b is formed in the conducting wire 15 in the second turn. do it.
In addition, when welding the winding end portion 12b to the conducting wire 15 on the third turn from the inner circumferential side, the conducting wire convex portion 15a is formed on the conducting wire 15 on the third turn, and the conducting wire concave portion 15b is formed on the conducting wire 15 on the second turn. All you have to do is form.
Although FIG. 10 describes the case of welding the winding end portion 12b and the conducting wire 15, the same applies to the case of welding the lead wire 16 and the conducting wire 15.

A conductive wire 15 is placed and fixed on the pedestal 14a as a wiring member necessary for configuring the U, V, W phases and the neutral point of the three-phase alternating current. , cut the conductive wire 15. Further, a conductor convex portion 15a is formed on the conductor 15 at the connection point with the winding terminal portion 12b and the lead wire 16, and conductor concave portions 15b are formed on the conductor 15 on the inner and outer circumferential sides of the conductor 15 on which the conductor convex portion 15a is formed. By performing a molding process, the wiring board 17 is manufactured.

Next, the method and procedure for arranging the connection plate 17 on the stator 10 and connecting it to the winding end portion 12b of the winding assembly 20 will be explained with reference to FIGS. 3A, 3C, 7, and 8. The explanation will be based on FIG. 11, which is an explanatory diagram of stator assembly (wiring plate arrangement), and FIG. 12, which is an explanatory diagram of electrode welding. Incidentally, FIG. 11 is a perspective view of the stator 10 in which the connection plate 17 is disposed while the stator is being assembled.
The arrangement of the connection plate 17 on the stator 10 and the connection between the conductive wire 15 and the winding end portion 12b of the winding assembly 20 are performed with the plurality of winding assemblies 20 fitted into the frame 60.

The connection plate 17 is arranged on the inner flange portion 13a2 of the connection side insulator 13a of the stator 10 and the connection plate placement surface 13f from the axial direction (Z) + side.
The coating of the winding end portion 12b of the winding assembly 20 is peeled off, the winding end portion 12b is routed along the outer flange wall 13e of the connection side insulator 13a, and the portion of the conductor 15 of the connection plate 17 from which the coating is peeled off is removed. Place it on the top. After all of the winding end portions 12b of each winding assembly 20 of the stator 10 are routed and placed on the conductive wire 15 of the connection plate 17, each winding end portion 12b and the conductor wire 15 of the connection plate 17 are welded and connected.
Note that this connection point corresponds to the circle mark (A) in FIG.

FIG. 12 is a diagram showing the positions of electrodes 70a and 70b during welding. An electrode 70a for welding is arranged on the axial direction (Z) + side of the welding location. An electrode 70b is arranged in the radial direction (R) from the inner peripheral side of the connection side insulator 13a of the stator 10, and the electrode 70a on the axial direction (Z) + side, the winding end portion 12b, and the conductor 15 of the connection plate 17 are sandwiched and welded. do.
Here, in order to avoid interference with the conductive wire 15, the tip of the electrode 70b is bent into an L-shape.

Further, after peeling off the coating on the end of the lead wire 16 for supplying power to the U, V, and W phases of the three-phase alternating current, the lead wire 15 is placed on the portion from which the coating was peeled off.
As in the case of the winding end portion 12b of the winding assembly 20, the electrode 70a is placed on the axial direction (Z) + side of the welding location, and the electrode 70b is placed in the axial direction (Z) of the conducting wire 15 from the inner peripheral side of the stator 10. Z) - side, the terminal of the lead wire 16 and the conductor wire 15 of the connection plate 17 are sandwiched, and the wires are connected by welding.
Note that this connection point corresponds to the □ mark (B) in FIG.

Next, a molding process performed for insulating and fixing the connection portion of the stator 10 shown in FIG. 11 after the welding connection is completed will be described based on FIG. 13.
FIG. 13 is a diagram showing the winding assembly 20 and connection plate 17 of the stator 10 molded together.
After welding and connecting the winding end portion 12b of the winding assembly 20 and the lead wire 16 to the conductor 15 of the connection plate 17, the winding assembly 20 of the stator 10 and the connection plate 17 are molded to form a welded portion. Insulate. Molding prevents the weld from breaking due to vibration.

The steps for manufacturing the wiring board 17 and the stator 10 of the first embodiment described above will be explained based on the flowchart of FIG. 14.
Note that the procedure for manufacturing the wiring board 17 and the stator 10 of the first embodiment consists of the following steps 1 (S01) to 7 (S07).

In step 1 (S01), a conducting wire forming step, one conducting wire 15 is wound around a jig (not shown) and formed into a spiral shape.
In the conducting wire fixing step of step 2 (S02), the spirally formed conducting wire 15 is inserted into the groove 14a1 of the pedestal 14a coated with the adhesive 19 and fixed to the pedestal 14a.
In the conductor cutting and forming step of step 3 (S03), the connection conductor fixed to the pedestal 14a is cut in accordance with the connection method of the rotating electric machine 100, and the conductor 15 at the connection point with the winding end portion 12b and the lead wire 16 is cut. A wire connection plate 17 is manufactured by forming a conductor protrusion 15a on the conductor 15 and forming a conductor recess 15b on the conductor 15 on the inner and outer circumferential sides.
In step 4 (S04), the wiring board arranging step, the wiring board 17 produced in step 3 (S03) is placed on the stator 10. Specifically, the connection plate 17 is arranged on the inner flange 13a2 of the connection side insulator 13a of the winding assembly 20 and the connection plate placement surface 13f.
In the winding end part drawing step of step 5 (S05), the winding end part 12b of the winding assembly 20 is placed on the conducting wire 15. In FIG. 9, the winding end portion 12b of the winding assembly 20 and the state before the lead wire 16 and the conductor wire 15 of the wiring board 17 are connected correspond to each other.
In the winding end welding step of step 6 (S06), the electrodes 70a and 70b are inserted, and the winding end 12b of the winding assembly 20, the lead wire 16, and the conducting wire 15 are welded.
In the molding step of step 7 (S07), after the winding end welding step of step 6 (S06) is completed, the winding assembly 20 of the stator 10 and the connection plate 17 are molded.

As explained above, after manufacturing the wiring board 17, the stator 10 can be manufactured using this wiring board 17.
Furthermore, by arranging the stator 10 using the connection plate manufactured in Embodiment 1 and the rotor 30 on the inner peripheral side of this stator 10, and holding and fixing it with the connection side bracket 50a and the non-connection side bracket 50b. , the rotating electric machine 100 can be manufactured.

Next, as a modification, a case will be described in which a pedestal 14b whose groove bottoms are at the same height is used.

The structure of the pedestal 14b in which the heights of the bottom surfaces of the grooves for the wiring board 17 are on the same plane will be explained based on FIGS. 15A to 15C and FIG. 16. In addition, in the description, a pedestal whose groove bottom surfaces are on the same plane is referred to as a pedestal 14b.
15A is a plan view of the pedestal 14b, FIG. 15B is a side view of the pedestal 14b, FIG. 15C is a sectional view taken along line BB in FIG. 15A, and FIG. 16 is a perspective view of the pedestal 14b.

The pedestal 14b is provided with a plurality of concentric grooves 14b1 in which the conducting wires 15 are arranged.
In order to create a connection member for the U, V, and W phases of the three-phase alternating current and the neutral line, a notch 14b2 is provided in the pedestal 14b as a space for cutting the conducting wire 15. In order to prevent the electrode 70a that contacts the conducting wire 15 from the axial direction (Z) + side from interfering with the pedestal 14b during welding, the inner wall recess 14b3 of the notch 14b2 has a recessed structure toward the inner circumferential side.
In order to pass the welding electrode 70b through the inner wall of the notch portion 14b2, a portion of the inner wall on the axial direction (Z) side is removed to provide an inner wall tunnel portion 14b4 having a tunnel shape.
The electrode 70b inserted from the inner peripheral side of the stator 10 is arranged from the inner wall tunnel portion 14b4 toward the axial direction (Z) − side of the wiring board 17, and extends from the axial direction (Z) + side to the electrode 70a, the conductor 15, and the winding terminal. The portion 12b or the lead wire 16 is sandwiched and welded.

A winding start part 14b5 is provided on the inner wall of the pedestal 14b, and when forming the conducting wire 15 into a spiral shape, the conducting wire 15 at the beginning of winding is hooked onto the winding start part 14b5 and then winding is started.

The difference between the pedestal 14b and the pedestal 14a is whether the heights of the groove bottom surfaces are on the same plane or are higher on the inner peripheral side.
The manufacturing of the connection plate 17, the arrangement on the stator 10, the welding of the conductive wire 15, the winding end portion 12b, and the lead wire 16, and the molding described in the flowcharts of FIGS. 9 to 13 and FIG. 14 were carried out using the pedestal 14a. Same as in case.

Also in the wiring board 17 using the pedestal 14b, a conductor protrusion 15a is formed on the conductor 15 at the connection point with the winding end portion 12b and the lead wire 16, and a conductor recess 15b is formed on the conductor 15 on the inner and outer circumferential sides. The conductive wire 15 and the winding end portion 12b or the lead wire 16 are welded together.
Therefore, an insulation distance between the winding end portion 12b and the lead wire 16 and the conductive wire 15 on the inner and outer circumferential sides of the connection point can be ensured.

As a modified example, a case has been described in which a pedestal 14b is used in which the height of the groove bottom surface is on the same plane. Further, it is also possible to use a pedestal whose groove bottom surface on the outer circumferential side is higher in height, contrary to the pedestal 14a whose groove bottom surface on the inner circumferential side is higher in height.
However, in this case, the winding terminal portion 12b or the lead wire 16 is connected to the conducting wire 15 from the axial direction (Z) − side.
Therefore, a conductor recess 15b is formed in the conductor 15 at the connection point between the winding terminal portion 12b and the lead wire 16, and a conductor protrusion 15a is formed in the conductor 15 on the inner and outer circumferential sides of the conductor 15 where the conductor recess 15b is formed. Shape.

As described above, in the connection plate of the stator of a rotating electrical machine according to the first embodiment, a spirally formed connection conductor is fixed with an adhesive to a base having a plurality of concentric grooves, and the connection conductor is fixed with an adhesive. The inner wall of the notch has a space for passing the electrode through, and the connecting conductor is cut according to the applicable wiring method to connect it to the winding end. A conductor convex portion is provided in the axial direction at the point, and conductor recesses are provided on the inner and outer circumferential sides of the connection point. Moreover, the rotating electric machine stator of Embodiment 1 is equipped with the above-mentioned wiring board, and the rotating electric machine is equipped with the above-mentioned rotating electric machine stator.
Therefore, in Embodiment 1, a wiring board is obtained in which the outer diameter of the spirally formed connecting conducting wire can be reduced.
Furthermore, if a pedestal is used in which the height of the bottom surface of the groove is higher on the inner circumferential side, the insulation distance between the winding end portion, the lead wire, and the connecting conducting wire can be more reliably secured. Moreover, a stator of a rotating electrical machine and a rotating electrical machine including this wiring board are obtained.

Embodiment 2.
Embodiment 2 relates to a connection plate of a stator of a rotating electric machine applied to a three-phase AC 1Y-connected rotating electric machine.

Regarding the connection plate of the rotary electric machine stator of Embodiment 2, FIG. 17 is a connection diagram of the rotating electric machine, FIG. 18 is an explanatory diagram of the connection plate (before cutting the connection conductor), and FIG. 18 is an explanatory diagram of the connection plate (after cutting the connection conductor) FIG. 19 is an explanatory diagram of the connection between the connecting conductor bent in the axial direction of the connection plate and the winding end portion, and FIG. 20 is an explanatory diagram of electrode welding related to the stator of the rotating electric machine. Based on Embodiment 21, differences from Embodiment 1 will be mainly explained.
In FIGS. 18 to 21 of the second embodiment, the same or equivalent parts as in the first embodiment are denoted by the same reference numerals.
Note that the explanation will be made using a pedestal 14a in which the height of the groove bottom surface is higher on the inner peripheral side.

A method and procedure for configuring the connection plate 17 when the rotating electric machine 100 has a three-phase AC 1Y connection will be explained based on FIGS. 17 to 19.
In Embodiment 2, an example will be described in which the present invention is applied to a rotating electric machine having a three-phase AC 1Y connection in which two windings of each phase are connected in series as shown in FIG.
FIG. 18 is a diagram of the three-phase AC 1Y connection shown in FIG. 17 before cutting the conducting wire 15.
FIG. 19 is a diagram after the conducting wire 15 is cut. 19 also shows the connection between the winding end portion 12b of the winding assembly 20 and the conductor 15, and the connection between the lead wire 16 connected to the power connector 40 and the conductor 15. In FIG. 19, the circle mark (A) indicates the connection between the winding end portion 12b of the winding assembly 20 and the conducting wire 15, which is necessary for three-phase AC 1Y connection. In addition, the □ mark (B) indicates the connection with the lead wire 16 connected to the power connector 40 of three-phase AC U, V, and W phases.
In addition, in FIG. 19, the neutral point of the U, V, and W phases of three-phase alternating current is also described, and the corresponding phase is described as (U), for example.

After fixing the conductive wire 15 to the pedestal 14a to form the connection member necessary for configuring the U, V, W phases and the neutral point of the three-phase AC, a die of a punch is inserted into the notch 14a2 of the pedestal 14a, The conductive wire 15 is punched out from the axial direction (Z) + side and cut.
In the second embodiment, in the same manner as in the first embodiment, three rounds are formed, and one more round is formed to form a four-turn spiral shape.

The innermost conducting wire 15 of the four turns of the conducting wire 15 is cut at positions 15°, 135°, 225°, and 345° clockwise from the winding start portion 14a5. The second conducting wire 15 from the inner peripheral side is cut at positions 15° and 255° clockwise from the winding start portion 14a5. The third conducting wire 15 from the inner peripheral side is cut at positions 135° and 345° clockwise from the winding start portion 14a5. The outermost conductive wire 15 is cut at a position 15° clockwise from the winding start portion 14a5.

A conductive wire 15 is arranged and fixed on the pedestal 14a as a wiring member necessary for configuring the U, V, W phases and the neutral point of the three-phase AC, and the wiring method of the stator 10 to be applied, that is, the rotating electrical machine 100 (in this case, , 1Y connection).

Next, a process of forming the conducting wire 15 at the connection point between the winding end portion 12b and the lead wire 16, which is performed after cutting the conducting wire 15, will be described based on FIG.
In FIG. 20, a case is explained in which the winding end portion 12b is connected (welded) to the second round of the conducting wire 15 from the inner circumferential side.
After cutting the conducting wire 15, the welded portion of the conducting wire 15 is bent so as to protrude in the Z+ direction to form a conducting wire convex portion 15a. Specifically, a jig with protrusions (not shown) applies pressure to the welded portion of the conductor 15 from the axial direction (Z) + side and the axial direction (Z) - side to form the conductor convex portion 15a. .
Furthermore, the conductive wire 15 on the outer circumferential side and the inner circumferential side of the conductive wire convex portion 15a is bent so as to protrude in the axial direction (Z)-direction to form the conductive wire recess 15b.

FIG. 21 is a diagram showing the positions of electrodes 70a and 70b during welding. An electrode 70a for welding is arranged on the axial direction (Z) + side of the welding location. The electrode 70b is arranged in the radial direction (R) from the inner peripheral side of the connection side insulator 13a of the stator 10, and the electrode 70a on the axial direction (Z) + side, the winding end portion 12b, and the conducting wire 15 of the connection plate 17 are sandwiched and welded. do.

As described above, the connection plate of the stator of the rotating electrical machine according to the second embodiment is configured to be applied to a three-phase AC 1Y-connected rotating electrical machine.
Therefore, the connection plate of the stator of a rotating electric machine according to the second embodiment can be applied to a three-phase AC 1Y connection rotating electric machine.

Although this application describes various exemplary embodiments and examples, various features, aspects, and functions described in one or more embodiments may be applicable to a particular embodiment. The present invention is not limited to the above, and can be applied to the embodiments alone or in various combinations.
Therefore, countless variations not illustrated are envisioned within the scope of the technology disclosed herein. For example, this includes cases where at least one component is modified, added, or omitted, and furthermore, where at least one component is extracted and combined with components of other embodiments. .

10 stator, 11 laminated core, 11a yoke part, 11b teeth part,
11c protrusion, 12 winding, 12a winding conductor, 12b winding terminal,
13a connection side insulator, 13a1 outer flange, 13a2 inner flange,
13c1 trunk, 13d conductor groove, 13e outer flange wall, 13f connection plate placement surface,
13b anti-connection side insulator, 13b1 outer flange, 13b2 inner flange,
13c2 body, 14a pedestal with a step on the groove bottom, 14a1 groove,
14a2 Notch, 14a3 Inner wall recess, 14a4 Inner wall tunnel,
14a5 winding start part, 14b pedestal whose groove bottom is on the same plane, 14b1 groove,
14b2 Notch portion, 14b3 Inner wall recessed portion, 14b4 Inner wall tunnel portion,
14b5 winding start portion, 15 connecting conductor, 15a conductor convex portion, 15b conductor concave portion,
16 lead wire, 17 wiring board, 20 winding assembly, 30 rotor, 31 rotating shaft,
40 power supply connector, 50a connection side bracket, 50b non-connection side bracket,
60 frame, 70a electrode, 70b electrode, 100 rotating electric machine.

Claims (9)

The pedestal includes a pedestal having a plurality of concentric grooves, the pedestal has a notch for cutting the connecting conductor according to the applicable wiring method, and the pedestal has a spirally formed connecting conductor. and a conductor convex portion is provided in the notch portion in the axial direction at a connection point with a winding end portion of the connection conductor, and the connection conductor is attached to at least one of the inner circumference side and the outer circumference side of the connection point. A wiring board for a stator of a rotating electrical machine that has a structure with conductor recesses. The wiring board has a structure in which the height of the bottom surface of the plurality of grooves is higher in the grooves on the inner circumference side and lower in the height of the grooves on the outer circumference side, and the height of the bottom surface of the grooves on the inner circumference side of the notch The wiring board for a stator of a rotating electric machine according to claim 1, further comprising a space through which an electrode is passed. The rotating electric machine according to claim 1, wherein the connection plate has a structure in which the heights of the bottom surfaces of the plurality of grooves are on the same plane, and a space for passing an electrode through an inner peripheral wall of the notch. Stator wiring board. The connection plate has a structure in which the height of the bottom surface of the plurality of grooves is higher in the grooves on the outer circumference side and lower in the height of the grooves on the inner circumference side, and the height of the bottom surface of the grooves on the inner circumference side of the notch portion is The wiring board for a stator of a rotating electric machine according to claim 1, further comprising a space through which an electrode is passed. The connection plate for a stator of a rotating electrical machine according to any one of claims 1 to 4, wherein the connection conductive wire is fixed to the pedestal with an adhesive. A wiring board for a stator of a rotating electric machine according to any one of claims 1 to 5,
A plurality of winding assemblies in which windings are wound around a laminated core equipped with an insulator,
the winding assembly is arranged in an annular manner and press-fitted into the frame;
A stator for a rotating electric machine, wherein the winding end portion of the winding assembly is connected to the conductor convex portion of the connection conductor wire. The stator for a rotating electric machine according to claim 6, wherein the insulator of the winding assembly includes a flat surface for arranging and positioning the connection plate. The stator for a rotating electric machine according to claim 6 or 7, wherein the connection plate and the winding assembly are molded. A stator for a rotating electrical machine according to any one of claims 6 to 8;
A rotor disposed on the inner peripheral side of the stator.