JP3508755B2 - Method for manufacturing vehicle alternator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle AC generator driven by an internal combustion engine, and more particularly to a vehicle AC generator mounted on a passenger car, a truck or the like.

[0002]

2. Description of the Related Art A stator having a winding formed by joining a plurality of conductor segments is conventionally known as a stator used in a vehicle AC generator. For example, in WO92 / 06527, a stator in which a winding is formed by inserting a plurality of U-shaped conductor segments from one end surface side of a stator core and then joining end portions on the opposite side to each other Is disclosed. This stator has a feature that it is easier to form regularly arranged windings as compared with a case where windings are formed by winding continuous conductor windings.

Further, in a stator used in a conventional vehicle alternator, an insulator is inserted between the stator winding and the stator core for the purpose of electrical insulation. There is something. For example, JP-A-4-1753
No. 9 discloses a stator in which an insulator, which is bent in a U shape according to the cross-sectional shape of the slot of the stator and has folded portions formed at both upper and lower ends, is inserted into each slot. Since the insulator has the folded portions on both sides thereof, there is an advantage that positioning when inserting into the slot of the stator becomes easy.

[0004]

By the way, the above-mentioned W
In O92 / 06527, there is no description about an insulator for electrical insulation inserted between the conductor segment and the stator core, but an insulator for electrical insulation is required depending on the usage environment of the vehicle alternator. In some cases, an insulator suitable for combination with a conductor segment axially inserted into the stator core is desired.

For example, in the case of using the insulator disclosed in the above-mentioned Japanese Patent Laid-Open No. 4-17539, since there are folded-back portions at both ends for positioning, the slots of the stator are axially aligned in the slots of the stator like the conductor segments. In addition, when trying to insert this insulator, the insertion work is difficult and there is a problem in assembling.

[0006] Further, the simplest one is one without a folded portion.
It is conceivable that the insulating sheet is bent in a U shape to form an insulator. However, when such an insulator is used, it is not easy to perform axial positioning because there is no folded portion. For example, in the manufacturing process of inserting the insulator into the slot of the stator or in the subsequent manufacturing process of the stator winding, there is a problem that the insulator is likely to deviate from the specified position. Therefore, there is a problem that it is not easy to mount the insulator and maintain its position.

Further, when the conductor segment is inserted and then bent, the end portion of the insulator is pressed and broken at the bent portion, which may cause insulation failure between the conductor segment and the stator core. Therefore, when one insulating sheet is simply folded to form an insulator, it cannot be said that it is optimal when used in combination with a conductor segment.

The present invention has been made in view of the above points, and an object thereof is to provide an improved vehicle alternator.

An object of the present invention is to provide a structure capable of improving the workability of mounting an insulator.

An object of the present invention is to provide an alternator for a vehicle which is easy to mount the stator in the slot and which is provided with an insulator which is hard to be displaced from a prescribed position in the slot.

An object of the present invention is to provide an AC generator for a vehicle in which the axial displacement or partial breakage of the insulator is unlikely to occur.

[0012]

To achieve the above object, a stator core having a plurality of slots, a plurality of conductor segments housed in the slots to form a stator winding, and an inner wall surface of the slot. And an electric conductor interposed between the electric conductor and the electric conductor, and an insulator having a stopper portion larger than the slot only in an end portion protruding to one of both axial end surfaces of the stator core. In the stator manufacturing method, before the insulator
The stopper portion has a tapered shape that spreads outwards,
The insulator is formed into a tubular shape and then the slot
It is inserted axially into Tsu the bets, the conductor segments, before
The end of the stator core on which the stopper is arranged is
A U-shaped conductor segment in which a core portion is arranged, can be inserted into the slot only from an axial direction of the slot, and is inserted from an end portion provided with the tapered stopper portion. The technical means of manufacturing a stator of a vehicle alternator can be adopted. this
According to the configuration, the insulator is formed by the tapered stopper portion.
Is locked to the end surface of the stator,
Positioning can be ensured.

In such a structure, since the conductor segment is inserted from the end portion provided with the stopper portion, the stopper portion provided only at one end of the insulator prevents the insulator from being dragged into the slot in the conductor segment insertion step. To prevent.

Further, since the stopper portion is formed only at one end portion of the insulator, the insulator can be inserted into the slot from the other end side without the stopper portion, the insertion workability can be improved, and the insulator is relatively simple. With such a configuration, the position of the insulator in the slot can be stably maintained.

The above-mentioned structure may be combined with a technical means in which the insulator has a tubular shape having an overlapping portion. Compared with the case where an insulator having a slit-shaped opening is used as the insulator, it is possible to prevent water from entering the inside of the insulator.

[0016]

Further, the stopper portion may be a bulge portion formed by bulging the end portion of the insulator to the outside of the opening edge of the slot, and the technical means may be used in combination with the above construction. With such a configuration, the shape is simpler than that of the folded-back portion, and its processing is easy. In addition, in the configuration in which the insulator has a tubular shape having the overlapping portion, the bulging portion as the stopper portion can be easily formed even in the overlapping portion.

Further, it is possible to employ a technical means in which the bulging portion is formed over the entire circumference along the end portion of the insulator. With this configuration, the effect of reinforcing the entire circumference of the end portion of the tubular insulator can be obtained.

[0019]

[0020]

Further, it is desirable that the electric conductor accommodated in the slot has a substantially rectangular cross-sectional shape along the shape of the slot. With this configuration, the space factor, which is represented by the ratio of the cross-sectional area of the electric conductor to the cross-sectional area of the slot, can be increased. Moreover, even if the gap between the electric conductor and the inner wall surface of the slot becomes small due to the high space factor and the insulator is easily rubbed, by adopting the insulator having the above-mentioned bent portion,
It is possible to prevent displacement of the insulator and breakage of the insulator, and it is possible to reliably ensure insulation. In addition, the improvement of the space factor reduces the invasion of salt water into the slots containing the electric conductor and the insulator, so that the insulation can be reliably maintained in combination with the effect of preventing displacement and breakage of the insulator. You can

It is important that the electric conductor has a cross-sectional shape along the inner wall surface of the slot, and the cross-sectional shape of the electric conductor extending out of the slot is round. It is possible to adopt a profile cross section or the like.

[0023]

[0024]

[0025]

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION A vehicle alternator according to an embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a sectional view showing the overall structure of an automotive alternator according to one embodiment. As shown in the figure, the vehicle alternator 1 of this embodiment includes a stator 2, a rotor 3,
The frame 4 and the rectifier 5 are included.

The stator 2 includes a stator core 32 and a conductor segment 3 as a plurality of electric conductors forming a stator winding.
3 and an insulator 34 that electrically insulates between the stator core 32 and the conductor segment 33. The stator core 32 is formed by stacking thin steel plates,
A large number of slots are formed on the inner peripheral surface thereof. The conductor segment 33 exposed from the stator core 32 forms the coil end 31 of the stator winding. The detailed structure of the stator 2 will be described later.

The rotor 3 has six field coils 8 each formed by winding an insulating copper wire in a cylindrical and concentric manner.
It has a structure in which it is sandwiched from both sides through the shaft 6 by the pole core 7 having individual claw portions. Further, an axial cooling fan 11 is attached to the end surface of the front pole core 7 by welding or the like in order to discharge the cooling air sucked from the front side in the axial direction and the radial direction. Similarly, a centrifugal cooling fan 12 is attached to the end surface of the pole core 7 on the rear side by welding or the like in order to discharge the cooling air sucked from the rear side in the radial direction.

The frame 4 accommodates the stator 2 and the rotor 3, the rotor 3 is rotatably supported about the shaft 6, and the outer peripheral side of the pole core 7 of the rotor 3 is accommodated. Stator 2 arranged with a predetermined gap
Is fixed. Further, the frame 4 is provided with a cooling air discharge hole 42 at a portion facing the coil end 31 of the stator 2.
However, the suction holes 41 are respectively provided on the axial end faces.

A vehicle alternator 1 having the structure described above.
When the rotational force from the engine (not shown) is transmitted to the pulley 20 via the belt or the like, the rotor 3 rotates in a predetermined direction. By applying an excitation voltage from the outside to the field coil 8 of the rotor 3 in this state, each claw portion of the pole core 7 is excited and a three-phase AC voltage can be generated in the stator winding, and the rectifier can be generated. A predetermined DC current is taken out from the output terminal of No. 5.

Next, details of the stator 2 will be described.
FIG. 2 is a perspective view of the conductor segment 33 that constitutes the stator winding, and shows a state before being assembled to the stator core 32. Further, FIG. 3 is a partial cross-sectional view of the stator 2. FIG. 4 is a perspective view showing a detailed shape of the insulator 34. FIG. 5 is a partial side view of the stator 2 showing the assembled state of the insulator 34. FIG. 6 is a partial external view of the stator 2. FIG. 7 is a perspective view showing details of the coil ends 31 on both end surfaces of the stator 2.

As shown in FIG. 2, the conductor segment 33 has
A bar or plate-shaped metal material (eg, copper) is used for the turn portion 3
The inner layer side conductor portion 33a is formed in a substantially U shape by being bent at 3c and is arranged on the inner peripheral side of the slot 35 with respect to the turn portion 33c, and the outer layer side is arranged on the outer peripheral side of the slot 35 with respect to the turn portion 33c. And a conductor portion 33b. Further, each of the inner layer side conductor portion 33a and the outer layer side conductor portion 33b is composed of an inner conductor as a linear portion housed in the slot 35 of the stator 2 and an outer conductor exposed to the outside of the slot 35. Has been done.

The stator winding of the stator 2 is the stator core 32.
2 conductor segments 33 are inserted in each slot 35 of
The three end portions 33d are connected to each other. As shown in FIG. 3, this conductor segment 33
The cross-sectional shape of each of the inner-layer side conductor portion 33a and the outer-layer side conductor portion 33b has a rectangular shape that is longer in the radial direction than in the circumferential direction, and the long sides of the rectangle are arranged along the radial direction. An insulating film is formed on the surface of the conductor segment 33, and the insulating between the adjacent conductor segments 33 is performed by the insulating film formed on each surface. Also, each conductor segment 33 and slot 3
The electrical insulation between the inner wall surface of the
Done by

As shown in FIG. 4, the insulator 34 has a shape in which a single sheet is bent according to the cross-sectional shape of the slot 35, and one end in the axial direction is folded back to the outside. The folded portion 36 is formed.
When the insulator 34 is inserted into the slot 35 of the stator core 32, the insulator 35 is inserted into the slot 35 along the axial direction with the end portion on the side where the folded-back portion 36 is not formed as the leading end. In addition, the folded-back portion 36 of the insulator 34 connects the insulator 34 to the stator core 32.
Used for positioning when assembling to. That is,
When inserting the insulator 34 into the slot 35, the insertion is performed until the end of the folded-back portion 36 comes into contact with the end surface of the stator core 32. When the end of the folded-back portion 36 is in contact with one end surface of the stator core 32 in this manner, as shown in FIG. 5A, the end of the insulator 34 on the side opposite to the folded-back portion 36 is the stator. It is in a state of protruding from the other end surface of the iron core 32. Therefore, as shown in FIG. 5B, when the conductor segment 33 is then inserted into the insulator 34 to form the stator winding,
The insulator 3 protruding from both end surfaces of the stator core 32
4 maintains electrical insulation between the edge of the slot 35 and the conductor segment 33. In the present embodiment, the folded-back portion 36 of the insulator 34 has the stator core 3 in which the turn portion 33c of the conductor segment 33 is arranged.
The conductor segment 33 and the insulator 34 are arranged on the same end side as the conductor segment 33.

Further, as shown in FIG. 6, in each conductor segment 33 constituting the stator winding, the turn portion 33c is provided on one side of the stator core 32 in the axial direction and the turn portion 33 is provided on the other side.
An end 33d on the side opposite to c is arranged. Conductor segment 33 constituting one coil end 31 of the stator 2
The oblique portions 33e of the outer layer and the inner layer are inclined in opposite directions, and are inclined in the same direction in each layer. Further, the connection between the end portions 33d of each conductor segment 33 may be performed by electrical joining such as ultrasonic welding, arc welding, brazing, or the like, or by using a machining means such as caulking.

Next, the manufacturing process of the stator winding will be described below. First, as shown in FIG. 4, the insulator 34 is inserted into each slot 35 of the stator core 32. Next, a U-shaped conductor segment 33 having substantially the same shape composed of the outer layer side conductor portion 33b, the inner layer side conductor portion 33a, and the turn portion 33c shown in FIG. 2 is formed on the same side surface of the stator core 32 in the axial direction. The conductor segments are stacked so that the turn portions 33c are aligned on the same side, and the outer layer side conductor portion 33b is positioned on the inner side of the slot 35 and the inner layer side conductor portion 33a is positioned on the opening side of the slot 35 as shown in FIG. 33 is inserted into the insulator 34 previously inserted into the slot 35. This conductor segment 33 is manufactured by bending a copper flat plate and shaping it into a substantially U-shape by pressing or the like, and the outer layer side conductor portion 33b and the inner layer side conductor portion 33a are formed on the substantially parallel slot side faces.
Both side surfaces of are pressed into contact with each other via the insulator 34. Next, as shown in FIG. 7, the turn portion 33c
After bending the end portions 33d formed on the opposite side of the coil end 31 in the opposite circumferential directions,
The ends 33d of the other conductor segments 33 in different layers are joined and connected.

In this way, only one axial end of the insulator 34 inserted into each slot 35 of the stator core 32 is folded back to form a folded portion 36,
Since the other end has a flat shape, the work when inserting the insulator 34 into each slot 35 along the axial direction with the other end side as the head becomes easy. In particular, by inserting the insulator 34 along the axial direction, which is the insertion direction of the conductor segment 33,
The direction in which the assembly jig and the like are arranged can be unified in the axial direction, and the process can be simplified.

Further, since the inserting direction of the insulator 34 and the inserting direction of each conductor segment 33 are the same, even when an axial force is applied to the insulator 34 at the time of inserting the conductor segment 33, the folded portion 36
The end portion of the contact portion abuts on the end surface of the stator core 32 to prevent displacement of the axial position of the insulator 34.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, in the above-described embodiment, the folded portion 36 of the insulator 34 is arranged on the insertion side of the conductor segment 33, but on the contrary, the folded portion 36 of the insulator 34 is arranged on the opposite side of the conductor segment 33. Good. In this case, the folding portion 36
Is arranged on the side where the conductor segment 33 is bent and inclined, so that the folded-back portion 36 is located at this bent portion. Therefore, since the insulator 34 is partially reinforced by the folded-back portion 36, it is possible to prevent the insulator 34 from partially breaking due to the pressure applied when the conductor segment 33 is bent.

In the above embodiment, the case where the number of conductors per slot is two has been described, but the number of conductors per slot may be increased. For example, as shown in FIG. 8, four conductor segments 133 may be accommodated in each slot 135 formed in the stator core 32 by being arranged only in the depth direction of the slot 135. In such a structure, a joining structure as shown in FIG. 9 can be adopted. The four conductor segments 133 housed in one slot 135 alternately extend in the circumferential direction. In FIG. 9, the outermost circumference shown on the front side extends in the clockwise direction, and the innermost circumference located at the innermost side extends in the counterclockwise direction. The end portion 133d of each conductor segment 133 has another conductor segment 1 extending from another slot 135 that is separated by a predetermined pitch.
It is joined to the end 133 d of 33. In FIG. 9, the innermost conductor segment 133 and the second-layer conductor segment 133 are joined together, and the third-layer conductor segment 133 and the outermost-layer conductor segment 133 are joined together. In the embodiment of FIG. 9, the insulator 134 having the bent portion 136 arranged on the side opposite to the insertion side of the conductor segment is illustrated.

Further, in the above-described embodiment, the substantially U-shaped conductor segment 33 having the turn portion 33c on one side surface side of the stator core 32 is used.
You may make it use the conductor segment which is not folded back and was separated by c, and joins both ends of this conductor segment. FIG. 10 is a perspective view showing a shape of a conductor segment which can be called an I shape or a J shape. The conductor segment 233 shown in the figure includes an inner conductor 233h which is a linear portion inserted into the slot 35 of the stator core 32, and an outer conductor 233i extending on both axial sides of the stator core 32 at both ends of the inner conductor 233h. It is composed of and. At least one of the two outer conductors 233i is bent from the broken line shape after being inserted into the slot. And
As shown in FIG. 11, the end portion 233d is joined to the end portion 233d of another conductor segment 233 inserted into a different slot to be connected to form a stator winding as a whole. Since the conductor segment 233 has a simple shape, it has the advantage of being easy to manufacture. Further, since each conductor segment 233 and the insulator 34 can be made to correspond to each other in a one-to-one manner, the work for inserting the insulator 34 into the slot 35 and further inserting the conductor segment 233 therein becomes easy.

FIG. 12 shows the shape of an insulator 341 according to another embodiment.

In this embodiment, the insulator 341 is used.
Is a cylinder having a slit 341d. The body portion 341a of the insulator 341 has a cross-sectional size that can be inserted into the slot 35. A bulge 361 as a stopper is formed only on one end 341b of the insulator 341. The other end 341c of the insulator 341 has the same cross-sectional size as the body 341a, and extends straight from the body 341a and terminates.

The bulge portion 361 has an insulator 341.
Is formed by bending the end of the taper so as to expand outward. The bulging portion 361 has a shape in which only one end of the cylindrical insulator 341 is expanded. The bulging portion 361 has a cross-sectional size larger than the opening of the slot 35. The bulge portion 361 projects outward from the axial opening of the slot 35. Moreover, in this embodiment, the bulge portion 361 is formed by the insulator 3
It is formed on the entire circumference of the end portion 341b of 41. Therefore, only one end of the insulator 341 spreads in a pyramid or a cone.

The insulator 341 is formed into a tubular shape and then inserted into the slot 35. Then, the bulge portion 361 is formed only on one end of the insulator 341. After the bulging portion 361 is molded, the bulging portion 36
1 strongly contacts the edge of the axial opening of the slot 35 and limits the axial movement of the insulator 341. The bulge portion 361 formed after the insulator 341 is inserted into the slot 35 prevents the insulator 341 from being displaced in the subsequent manufacturing process.

In this embodiment, the conductor segment shown in FIG. 2 is used. This conductor segment can be inserted into the slot 35 only from the axial direction of the stator core. By connecting a plurality of conductor segments in series on the stator, a winding of one phase is formed which makes one or more turns around the stator core. Multi-phase windings are formed on the stator core.

The conductor segment is inserted from one end side of the insulator 341 in which the bulge portion 361 is formed.
The bulge 361 prevents the insulator 341 from being dragged into the slot 35.

Moreover, since the bulging portion 361 extends over the entire circumference, one end 341b of the insulator 341 is given high rigidity. This prevents the end opening of the insulator 341 from being deformed, in particular, reduced. This is advantageous when inserting the tip of the conductor segment into the opening on the one end side of the insulator 341.

Such a bulge portion 361 is easy to process. Moreover, the two adjacent insulators 341
Have the effect of preventing them from interfering with each other. These effects are particularly advantageous when the two slots 35 are closely spaced.

FIG. 13 shows the shape of an insulator 342 according to still another embodiment.

In this embodiment, the insulator 342 is used.
Has an overlapping portion 342a. Insulator 342
Is a cylinder without slits. Moreover, the overlapping portion 342a is separated from the inner slit of the slot 35. In this embodiment, the overlapping portion 342a is arranged on the bottom surface located on the radially outer side of the slot 35.

In the embodiment of FIG. 13, in addition to the effects obtained in the embodiment of FIG. 12, the following operational effects are further obtained. With this configuration, intrusion of water droplets is prevented. Further, since it has the overlapping portion 342a, a part of the insulator does not protrude from the inner slit-shaped opening 35a of the slot 35. In particular, since the overlapping portion 342a extending parallel to the slit-shaped opening 35a is arranged on the inner side of the slot 35, it is possible to prevent the insulator from protruding into the inside of the stator.

The insulators 341 and 342 shown in FIGS. 12 and 13 can be inserted into the slots 35 after being preliminarily molded into the shapes shown in FIGS. At this time, the insulators 341, 342 are axially inserted into the slots 35 from the end portions without the bulging portions 361, 362. The bulges 361 and 362 are
It can function as a stopper that prevents axial displacement of the insulators 341 and 342 in the insulator inserting step and the subsequent manufacturing step.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the overall structure of a vehicle AC generator according to an embodiment.

FIG. 2 is a perspective view of a conductor segment that constitutes a stator winding.

FIG. 3 is a partial cross-sectional view of a stator.

FIG. 4 is a perspective view showing a detailed shape of an insulator.

5A is a partial side view of a stator core with an insulator inserted, and FIG. 5B is a partial side view of the stator after a conductor segment is assembled.

FIG. 6 is a partial external view of a stator.

FIG. 7 is a perspective view showing details of coil ends on both end surfaces of the stator.

FIG. 8 is a partial cross-sectional view of a stator with four conductor segments inserted in each slot.

FIG. 9 is a partial perspective view of a stator with four conductor segments inserted in each slot.

FIG. 10 is a perspective view showing the shape of a conductor segment without folding back.

11 is a partial external view of a stator formed by using the conductor segment shown in FIG.

FIG. 12 is a perspective view showing an insulator shape of another embodiment.

FIG. 13 is a perspective view showing an insulator shape of another embodiment.

[Explanation of symbols]

1 Vehicle AC generator 2 stator 3 rotor 32 Stator core 33 conductor segment 33d end 34 insulator 35 slots 36 Folding part 4 frames 41 Discharge hole 42 Suction hole

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Dr. Ishida, Dr. Ishida, 1-1, Showa-cho, Kariya city, Aichi Prefecture, Denso Co., Ltd. (72) Inventor, Yoshio Naka, 1-1, Showa-machi, Kariya city, Aichi, Ltd., denso company ( 72) Inventor Shinichi Matsubara, 1-1, Showa-cho, Kariya city, Aichi Prefecture, DENSO CORPORATION (56) References JP-A-8-205441 (JP, A) JP-A-4-244752 (JP, A) Patent 3351387 ( (58) Fields surveyed (Int.Cl. ⁷ , DB name) H02K 15/085 H02K 3/04 H02K 3/34 H02K 15/10

Claims (12)

(57) [Claims] 1. A stator core having a plurality of slots,
A plurality of conductor segments housed in the slot to form a stator winding, and interposed between the inner wall surface of the slot and the electric conductor, and protruding to either one of both axial end faces of the stator core. In a method for manufacturing a stator for a vehicle alternator, comprising: an insulator having a stopper portion larger than the slot only at the end portion of the insulator, the stopper portion of the insulator is directed outward.
It has a tapering shape, and the insulator has a cylindrical shape.
After being molded, the conductor segment is inserted axially into the slot, and the conductor segment is arranged before the stopper portion is arranged.
A U-shaped conductor in which the turn part is arranged on the end face side of the stator core.
AC segment for a vehicle, which is a body segment, can be inserted into the slot only from an axial direction of the slot, and is inserted from an end portion provided with the tapered stopper portion. Machine stator manufacturing method. 2. The method for manufacturing a stator for a vehicle alternator according to claim 1, wherein the insulator is inserted into the slot from the other end side without the stopper portion. 3. The method for manufacturing a stator for a vehicle alternator according to claim 1, wherein the insulator has a tubular shape having an overlapping portion. 4. The stopper portion is a bulge portion formed by bulging an end portion of the insulator to the outside of an opening edge of the slot.
5. A method for manufacturing a stator for an automotive alternator according to any one of 1. 5. The method for manufacturing a stator for an automotive alternator according to claim 4 , wherein the bulge portion is formed over the entire circumference along the end portion of the insulator. Wherein said conductor segments, manufacturing method for a vehicle alternator stator according to any one of claims 1 to 5, wherein a slot substantially rectangular cross-sectional shape along the shape . 7. The insulator is formed into a tubular shape.
Axially inserted into the slot after
Only at the end of the insulator is the tapered strut
The upper part is molded, The claim 1 characterized by the above-mentioned.
A method for manufacturing a stator of an alternator for a vehicle. 8. The tapered stopper portions are adjacent to each other.
Prevents the two insulators from interfering with each other
It is formed so that it may be formed.
Of manufacturing a stator for an automotive alternator of. 9. The insulator has an overlapping portion.
The tubular shape according to claim 7 or 8,
Of manufacturing a stator for an automotive alternator of. 10. The inner portion of the slot is provided with the overlapping portion.
10. It arrange | positions away from a lit, It arrange | positions in Claim 9,
A method for manufacturing the stator of the vehicle alternator described. 11. The overlapping portion is formed in a radial direction of the slot.
It is arranged on the bottom surface located outside.
10. The method for manufacturing a stator for a vehicle AC generator according to 10. 12. The tapered stopper portion is provided with
Formed all around along the edge of the insulator
The method according to any one of claims 7 to 11, characterized in that
A method for manufacturing a stator of an alternator for a vehicle.