JP2003259586A - Stator for rotary electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a stator for a rotary electric machine capable of connecting a coil and a cord without using an intervening connection terminal that penetrates a stator core. <P>SOLUTION: The end of the cord 4 is provided at the one-end side in the thickness direction of the stator core 1 in a state that the end of the cord passes through a through-hole 5 penetrating an annular part l<SB>a</SB>of the stator core 1 in the thickness direction. At the one-end side in the thickness direction of the stator core 1, a terminal of the coil 3 and a terminal of the cord 4 are electrically connected by a solderless terminal 9. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a structure in which a coil is wound around each salient pole of a stator iron core through a bobbin, and is used for a rotating electric machine used as a stator of a rotating electric machine including an electric motor and a generator. It is related to the stator.

[0002]

2. Description of the Related Art FIGS. 8A to 8C show the structure of a conventional stator for a rotary electric machine of this type.
FIG. 8A is a front view of a conventional stator for a rotary electric machine, FIG.
8B is a vertical cross-sectional view of FIG. 8A, FIG. 8C is a rear view of a conventional rotary electric machine stator, FIG. 9 is an enlarged view of an R portion of FIG. 8A, and FIG. 11B is an enlarged view of the upper half of FIG.
FIG. 4 is a side view of an intermediary connection terminal used in a conventional stator for a rotary electric machine.

As shown in the figure, this stator for a rotary electric machine is provided with a stator iron core 1 having a plurality of projecting poles 1b projecting from an annular portion 1a, and each salient pole 1b of the stator iron core 1 via a bobbin 2. Each coil 3 is wound. The cord 4 is connected to the terminal of each coil 3. The positions where the terminals of each coil 3 are present and the positions where the cords 4 are pulled out are on both sides in the thickness direction of the annular portion 1a of the stator core 1. The terminal of each coil 3 and each cord 4 are connected to each other by providing a through hole 5 penetrating the annular portion 1a of the stator iron core 1 in the thickness direction, and passing an intermediary connection terminal 6 through the through hole 5. The protrusion 6a provided on the intermediary connection terminal 6 prevents the intermediary connection terminal 6 from being bifurcated at one end 6 thereof.
The end of the coil 3 is wound around b and is connected by soldering, and the cord 4 is attached to the forked portion 6c at the other end of the intermediary connection terminal 6.
The core wire of the terminal is threaded, wound, and connected by soldering. One forked portion 6b is sized to pass through the through hole 5, and the other forked portion 6c is sized not to enter the through hole 5, and the intermediary connection terminal 6 is passed through from the one forked portion 6b side. When passing through the hole 5, the other bifurcated portion 6c finally hits the bobbin 2 so as not to enter further. The protrusion 6a has one forked portion 6b.
When the intermediary connection terminal 6 is passed through the through hole 5 from the side, the insertion can be easily performed, but when the other forked portion 6c is pulled and pulled out, the projection 6a is caught in the through hole 5 and does not come out. It is projected in. Through hole 5
The intermediate connection terminal 6 in the inside is an insulating resin 7 forming the bobbin 2.
Is insulated from the stator core 1. Each code 4
Are collected, covered together with the tube 8 and drawn out of the stator.

[0004]

However, in such a conventional stator for a rotary electric machine, the connection between the end of the coil 3 and the cord 4 is performed by using the intermediary connection terminal 6 which penetrates the stator core 1 in the stacking direction. Therefore, there is a problem in that a dedicated intermediary connection terminal 6 must be created each time the thickness of the stator core 1 in the stacking direction is different, which causes a problem of increased cost.

In this case, the terminal of the coil 3 is connected to the intermediary connection terminal 6, and the intermediary connection terminal 6 and the cord 4 are connected.
Since the connection with the core wire of
In the terminal of No. 4 and the terminal of Code 4, the work of removing the insulating material is required, which is troublesome.

It is an object of the present invention to provide a stator for a rotary electric machine, which can connect a coil and a cord without using an intermediary connection terminal penetrating the stator core.

Another object of the present invention is to provide a stator for a rotating electric machine, which can connect a coil and a cord without removing an insulator.

Another object of the present invention is to provide a stator for a rotary electric machine capable of preventing independent vibration of a crimp terminal connecting a coil and a cord.

[0009]

SUMMARY OF THE INVENTION According to the present invention, a stator iron core having a plurality of projecting poles projecting from an annular portion, and a terminal wound around the salient poles of the stator iron core and having an end on one end side in the thickness direction of the stator iron core. And a cord electrically connected to the end of the coil. The cord is intended for a rotating electric machine stator that is drawn out from the other end side in the thickness direction of the stator core.

In the stator for a rotary electric machine according to the present invention, the end portion of the cord is provided at one end side in the thickness direction of the stator core while penetrating a through hole penetrating the annular portion of the stator core in the thickness direction. The end of the coil and the end of the cord are electrically connected to each other at one end side in the thickness direction.

In such a stator for a rotary electric machine, since the end of the cord is electrically connected to the end of the coil while passing through the through hole of the annular portion of the stator iron core, the end of the cord is inserted into the through hole of the stator iron core. The need for an intermediary connection terminal to pass through can be reduced, and the cost can be reduced.

Further, according to the present invention, a stator core having a plurality of projecting poles protruding from an annular portion, a coil wound around the projecting poles of the stator core, and an end of the coil are electrically connected. The present invention is directed to a stator for a rotary electric machine including a cord.

In the stator for a rotary electric machine according to the present invention, through-holes are provided by penetrating the annular portion of the stator core in the thickness direction so as to open at one end side and the other end side in the thickness direction of the stator core respectively. End of the stator core is penetrated through the through hole from one end in the thickness direction of the stator core to the other end in the thickness direction of the stator core, and the coil end is connected to the end of the cord at the other end side in the thickness direction of the stator core. It is electrically connected.

In such a stator for a rotary electric machine, the end of the coil is electrically connected to the end of the cord while passing through the through hole of the annular portion of the stator iron core. The need for an intermediary connection terminal to pass through can be reduced, and the cost can be reduced.

In this case, it is preferable that the cord end and the coil end are electrically connected by crimping terminals. In this way, the work of removing the insulating material of the cord or the coil is not necessary, and the connection work can be performed easily and efficiently.

Further, the electrical connection between the end of the cord and the end of the coil is made by a crimp terminal at one end side in the thickness direction of the stator iron core, and the crimp terminal is of a size that does not pass through the through hole. Is preferred. By doing so, the work of removing the insulation of the cord or coil is not required, and the connection work can be performed easily and efficiently, and when a tensile force acts on the cord, the portion of the cord inside the through hole and the through hole It is possible to prevent the tension from being transmitted to the coil by the locking action of the crimp terminal having a size that does not pass through.

Further, the crimp terminal is preferably held by a terminal holder portion which is provided integrally with the bobbin and holds the crimp terminal. If it looks like this,
When mechanical vibration is applied, the crimp terminal does not vibrate independently, and it is possible to prevent the connection location of the crimp terminal from having poor conduction.

[0018]

1 (A) to 1 (C) to 3 show a first example of an embodiment of a stator for a rotary electric machine according to the present invention, and FIG. 1 (A) shows this example. 1B is a front view of the rotating electric machine stator, and FIG. 1B is a vertical cross-sectional view of FIG.
1C is a rear view of the rotating electric machine stator of this example, FIG. 2 is an enlarged view of a P portion of FIG. 1A, and FIG. 3 is an enlarged view of an upper half portion of FIG. 1B.

In the stator for a rotary electric machine of this example, the annular portion 1a of the stator core 1 is penetrated in the thickness direction to be opened at one end side and the other end side of the stator core 1 in the thickness direction, and a plurality of through holes 5 are formed. It is provided. These through holes 5
Is thick enough to pass each cord 4. The ends of the cords 4 penetrate the through-holes 5 from the other end of the stator core 1 in the thickness direction to the one end.
The other side (each coil 3) is passed through the through hole 5 of the annular portion 1a.
The end of each cord 4 that is exposed to the end (of the terminal) is electrically connected to the end of each coil 3 by crimping with a crimp terminal 9. The crimp terminal 9 has a structure in which a large number of connection protrusions are provided on the inner surface of the crimp terminal 9, and the cord 4 which is an object to be connected.
By inserting the end of (1) and the end of the coil 3 into the inside and crimping, each connection protrusion penetrates the insulating coating and is electrically connected to the conductor inside. Further, the crimp terminal 9 in the connected state has a size that cannot pass through the through hole 5.

In such a stator for a rotary electric machine, the end of the cord 4 is electrically connected to the end of the coil 3 while passing through the through hole 5 of the annular portion 1a of the stator iron core 1. The intermediary connection terminal that passes through the through hole 5 of 1 is not required, and the cost can be reduced.
Further, since the terminal of the cord 4 and the terminal of the coil 3 are electrically connected by the crimp terminal 9, the work of removing the insulator of the cord 4 and the coil 3 is not necessary, and the connection is simple and efficient. You can do the work. Further, since the crimp terminal 9 that electrically connects the end of the cord 4 and the end of the coil 3 has a size that does not pass through the through hole 5, when the cord 4 is pulled, a penetrating force is applied. It is possible to prevent the tension from being transmitted to the coil 3 by the locking action of the crimp terminal 9 having a size that does not pass through the portion of the cord 4 in the hole 5 and the through hole 5.

4 to 6 show a second example of an embodiment of a stator for a rotary electric machine according to the present invention. FIG. 4 is a rear view of a main part of the stator for a rotary electric machine of this example, and FIG. Q in Figure 4
FIG. 6 is an enlarged view of a portion, and FIG. 6 is a sectional view taken along line XX of FIG.

In the stator for a rotary electric machine of this example, the crimp terminals 9 for electrically connecting the conductors of the cords 4 and the terminals of the coils 3 are provided integrally with the bobbin 2. It is held by each terminal holder portion 10 holding 9 respectively. Each terminal holder portion 10 is molded together when the bobbin 2 is molded.

The other structure is the same as that of the first embodiment, and corresponding parts are designated by the same reference numerals.

As described above, when the crimp terminal 9 is integrally provided with the bobbin 2 and held by the terminal holder portion 10 which holds the crimp terminal 9, the crimp terminal 9 is subjected to mechanical vibration. Does not vibrate by itself, and the crimp terminal 9
It is possible to prevent the connection point of (2) from having poor conduction.

FIG. 7 is a longitudinal sectional view of a main part showing a third example of the embodiment of the stator for a rotary electric machine according to the present invention.

In the stator for a rotating electric machine of this example, the through hole 5 is provided by penetrating the annular portion 1a of the stator iron core 1 in the thickness direction and opening the one end side and the other end side of the stator iron core 1 in the thickness direction. Has been. The inner surface of the through hole 5 is insulated by the insulating resin 7 forming the bobbin 2. The through hole 5 has a thickness that allows the coil 3 to pass therethrough. The end portion of the coil 3 penetrates through the through hole 5 from one end side in the thickness direction of the stator core 1 and is led out to the other end side in the thickness direction of the stator core 1. The end of the coil 3 is electrically connected to the end of the cord 4 at the other end side in the thickness direction of the stator core 1 by the crimp terminal 9 having the above-described configuration.

In such a stator for a rotary electric machine, since the end of the coil 3 passes through the through hole 5 of the annular portion 1a of the stator core 1 and is electrically connected to the end of the cord 4, the stator core. The intermediary connection terminal that passes through the through hole 5 of 1 is not required, and the cost can be reduced.
Further, since the terminal of the cord 4 and the terminal of the coil 3 are electrically connected by the crimp terminal 9, the work of removing the insulator of the cord 4 and the coil 3 is not necessary, and the connection is simple and efficient. You can do the work.

In each of the above examples, the terminal of each cord 4 and the terminal of each coil 3 are electrically connected by the crimp terminal 9, but the present invention is not limited to this, and soldering may be performed depending on the case. Etc.

[0029]

According to the stator for a rotary electric machine of the present invention,
Since the end of the cord passes through the through hole of the annular portion of the stator core and is electrically connected to the end of the coil, the intermediate connection terminal that passes through the through hole of the stator core is not required, and the cost is reduced. Can be achieved.

Further, in the stator for a rotary electric machine according to the present invention, since the end of the coil is electrically connected to the end of the cord while passing through the through hole of the annular portion of the stator core, the stator core is penetrated. Since the intermediary connection terminal that passes through the hole is not required, the cost can be reduced.

In this case, if the cord end and the coil end are electrically connected by crimping terminals,
There is no need to remove the insulation material of the cord or coil, and the connection work can be performed easily and efficiently.

Further, when the electrical connection between the end of the cord and the end of the coil is made by a crimp terminal on one end side in the thickness direction of the stator core, the crimp terminal is of a size that does not pass through the through hole. , The work of removing the insulation of the cord and coil is not required, and the connection work can be performed easily and efficiently, and when a tensile force acts on the cord,
It is possible to prevent the tension from being transmitted to the coil by the locking action of the crimp terminal having a size that does not pass through the portion of the cord in the through hole and the through hole.

Further, when the crimp terminal is integrally provided with the bobbin and is held by the terminal holder portion for holding the crimp terminal, the crimp terminal vibrates independently when mechanical vibration is applied. It is possible to prevent the connection portion of the crimp terminal from having poor continuity.

[Brief description of drawings]

1A to 1C are views showing a first example of an embodiment of a stator for a rotary electric machine according to the present invention, and FIG. 1A is a front view of a stator for a rotary electric machine according to this example; 3B is a vertical sectional view of FIG. 3A, and FIG. 3C is a rear view of the stator for a rotary electric machine of this example.

FIG. 2 is an enlarged view of a P portion of FIG.

FIG. 3 is an enlarged view of an upper half portion of FIG.

FIG. 4 is a rear view of the main parts showing a second example of the embodiment of the stator for a rotary electric machine according to the present invention.

5 is an enlarged view of a Q portion of FIG.

6 is a cross-sectional view taken along line XX of FIG.

FIG. 7 is a longitudinal sectional view of an essential part showing a second example of the embodiment of the stator for a rotary electric machine according to the present invention.

FIG. 8A is a front view showing a configuration of a conventional rotary electric machine stator, FIG. 8B is a vertical sectional view of FIG. 8A, and FIG. 8C is a rear view of the conventional rotary electric machine stator.

FIG. 9 is an enlarged view of an R portion of FIG.

FIG. 10 is an enlarged view of the upper half of FIG.

FIG. 11 is a side view of an intermediate connection terminal used in a conventional stator for a rotary electric machine.

[Explanation of symbols]

Stator core 1a annular part 1b convex pole 2 bobbins 3 coils 4 codes 5 through holes 6 Intermediary connection terminal 6a protrusion 6b, 6c bifurcated 7 Insulating resin 8 tubes 9 Crimp terminal 10 Terminal holder part

Claims (5)

[Claims] 1. A stator iron core having a plurality of projecting poles projecting from an annular portion, a coil wound around the salient poles of the stator iron core and having an end disposed on one end side in the thickness direction of the stator iron core, A cord electrically connected to a terminal of a coil, wherein the cord is drawn to the outside from the other end side in the thickness direction of the stator iron core, wherein an end portion of the cord is the stator iron core. It is provided at one end side in the thickness direction of the stator iron core in a state of penetrating a through hole penetrating the annular portion in the thickness direction, and the end of the coil and the end of the cord are electrically connected at one end side in the thickness direction of the stator core. For a rotating electric machine that are connected together. 2. A stator iron core having a plurality of projecting poles protruding from an annular portion, a coil wound around the salient poles of the stator iron core, and a cord electrically connected to an end of the coil. In the stator for a rotating electric machine, a through hole is provided by penetrating the annular portion of the stator iron core in the thickness direction to open at one end side and the other end side in the thickness direction of the stator iron core, and the end of the coil is provided. A part is passed through the through hole from one end side in the thickness direction of the stator core and is led out to the other end side in the thickness direction of the stator core, and the end of the coil is the other end side in the thickness direction of the stator core. A stator for a rotating electrical machine that is electrically connected to the end of the cord. 3. The stator for a rotating electric machine according to claim 1, wherein the electrical connection between the end of the cord and the end of the coil is made by a crimp terminal. 4. The electrical connection between the end of the cord and the end of the coil is made by a crimp terminal at one end side in the thickness direction of the stator iron core, and the crimp terminal has a size that does not pass through the through hole. The stator for a rotary electric machine according to claim 1, wherein: 5. The stator for a rotary electric machine according to claim 3, wherein the crimp terminal is provided integrally with the bobbin and is held by a terminal holder portion that holds the crimp terminal.