JP3446776B2 - Stator for magnet generator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator for a magnet generator, and more particularly to an improvement in a fixing structure for connecting a lead wire and a lead wire of a coil wound around a salient pole of a stator core. is there.

[0002]

13 and 14 show the structure of a conventional stator for a magneto generator of this type.

This stator for a magnet generator is provided with a stator core 1 having salient poles 1a radially protruding in the circumferential direction, and each salient pole 1a is provided with a coil 3 via a coil winding bobbin 2. It is wrapped. The lead wire 6 of the wire harness 5 is connected to the lead wire 4 of the coil 3 by the crimp terminal 7.
And an insulating tube 9 is attached to the connecting portion 8 for insulation. The respective connecting portions 8 having such a structure are gathered and arranged so as to straddle the adjacent coils 3,
It is collectively clamped by the connecting portion fixing clamp 10 and fixed to the stator core 1. The wire harness 5 is
It is fixed to the stator core 1 by the wire harness fixing clamp 11 between the coils 3.

In this case, the coil 3 includes an ignition coil, a load coil, a charge coil, a lamp coil and the like.

The insulating means for insulating the salient pole 1a from the coil 3 includes a coil winding bobbin 2 made of a split bobbin or an injection mold bobbin, or an insulating resin layer formed by powder coating on the heating salient pole 1a.

[0006]

However, the stator for a magnet generator having the above-mentioned structure has the following problems.

(A) Since the plurality of connecting portions 8 are collectively clamped by the connecting portion fixing clamp 10, the insulating tube 9 is required to insulate the connecting portions 8 and the cost is increased.

(B) It is necessary to fit the insulating tube 9 to the connecting portion 8 and fix it, which takes a long time,
The number of man-hours increases, which is economically disadvantageous.

(C) Since the plurality of connecting portions 8 are collectively clamped by the connecting portion fixing clamp 10, it is difficult to fix the individual connecting portions 8 and there is a problem in vibration resistance.

(D) It is difficult to automate the work of fixing the connecting portion 8.

It is an object of the present invention to provide a stator for a magnet generator capable of supporting a connecting portion on a stator core without using an insulating tube.

Another object of the present invention is to provide a stator for a magnet generator capable of automating the supporting work for the stator core of the connecting portion.

[0013]

According to the present invention, a coil is wound around a plurality of salient poles of a stator core, a lead wire is connected to a lead wire of the coil at a connecting portion by a crimp terminal, and the connecting portion is The stator for the magneto generator fixed to the stator core is targeted for improvement.

In the stator for a magneto generator according to the present invention, the stator core is provided with a holder for each connecting portion , and each holder for the connecting portion is the stator core.
Standing up in a direction substantially parallel to and supported by
In the longitudinal direction of the groove between the barb and these parallel rises
Formed by the bent portion of the rising portion that closes one end,
Between the raised parts of these connection holders ,
Each of the connection portions is individually supported in a bare state in a direction along the bottom portion, and at least a portion of each connection portion holder which is in contact with the connection portion is made of an insulator.

In this case, the connecting portion holder can be formed of resin integrally with the coil winding bobbin provided on the salient pole.

Further, the connecting portion holder is formed by cutting and raising from a side plate of a laminated body forming the salient pole, and at least a portion of the connecting portion holder which is in contact with the connecting portion is covered with an insulating resin layer. can do.

Further, the connection part supported by the connection part holder can be fixed to the connection part holder by an adhesive so as not to come off.

Further, the connection part supported by the connection part holder can be fixed to the connection part holder by preventing it from coming off by narrowing the inlet of the connection part holder.

[0019]

As described above, the connecting portion holder is provided for each connecting portion , and each connecting portion holder is supported by the stator core to be substantially flat.
The rising part that was started up in the direction of going
Of the rising part that closes one end in the longitudinal direction of the groove between the lifting parts
It is formed by the bent part and the rise of these connection part holders
If each connection part is individually supported in a bare state in the direction along the bottom of the groove between the barbs, and at least the part that contacts the connection part is made of an insulator, without using an insulating tube. Each connecting portion can be supported by the stator core.

If the connecting portion holder is integrally formed with resin with the coil winding bobbin provided on the salient pole, the connecting portion holder can be formed together with the formation of the coil winding bobbin.

Further, when the connecting portion holder is formed by cutting and raising from the side plate of the laminated body forming the salient pole,
The connecting part holder can be formed when the stator core is formed.

Further, when the connection portion is supported by the connection portion holder, and the connection portion is fixed to the connection portion holder with an adhesive, the supporting work of the connection portion with respect to the stator core can be automated. Become.

Further, when the connecting portion is supported by the connecting portion holder, and the connecting portion is retained and fixed to the connecting portion holder by narrowing the inlet of the connecting portion holder, supporting work for the stator core of the connecting portion is performed. Can be automated.

[0024]

Embodiments of the present invention will now be described in detail with reference to the drawings. In addition, in the portion corresponding to FIG. 13 described above,
The same reference numerals are given.

1A and 1B and 2A and 2B
1 shows a first embodiment of a stator for a magnet generator according to the present invention.

In the stator for the magneto-generator of this embodiment, the coil winding bobbins 2 are provided on the 18 salient poles 1a of the stator core 1, and the coils 3 are wound on the coil winding bobbins 2. It is equipped. Each coil winding bobbin 2 is composed of a split bobbin or an injection mold bobbin. Reference numeral 2a is a rib of the coil winding bobbin 2 protruding from the annular yoke portion 1b of the stator core 1.

Each lead wire 6 of the wire harness 5 is connected to each lead wire 4 of each coil 3 by a crimp terminal 7.
Are connected respectively.

On the annular yoke portion 1b of the stator core 1, there are supported as many circumferentially adjacent connecting portion holders 12 as there are connecting portions 8 and having an inverted U-shape. Each connection holder 12
Are formed by the rising portions 12a and 12b.
The rising portions 12a and 12b are oriented so as to be substantially parallel to each other, and one end of one rising portion 12a has one end.
It is bent so as to close one end between the parallel portions of a and 12b. These connecting portion holders 12 are formed integrally with each coil winding bobbin 2.

The connection holder 12 is set up
Between the portions 12a and 12b, the connecting portions 8 by the pressing terminals 7 are individually fitted and supported in the direction along the bottom of the groove in a bare state. Each connection part 8 supported by these connection part holders 12 is fixed to each connection part holder 12 with a thermosetting adhesive (for example, an epoxy adhesive) 13 so as not to come off. With the adhesive 13, each lead wire 4 of the coil 3 and each lead wire 6 of the wire harness 5 together with the coil winding bobbin 2 through the annular yoke portion 1 of the stator core 1.
It is fixed to b.

In this way, the connecting portion holder 12 is provided for each connecting portion 8, and each connecting portion 8 is connected to these connecting portion holders 12.
When each connecting portion holder 12 is made of the same insulator as the coil winding bobbin 2, each connecting portion 8 can be supported by the stator core 1 without using an insulating tube.

If the connecting portion holder 12 is formed of resin integrally with the coil winding bobbin 2 provided on the salient pole 1a, the connecting portion holder 12 can be formed together with the formation of the coil winding bobbin 2. You can

When the connecting portion 8 is supported by the connecting portion holder 12 and the connecting portion 8 is fixed to the connecting portion holder 12 with the adhesive 13, the stator core 1 of the connecting portion 8 is fixed.
It is possible to automate the support work for.

FIGS. 3 to 6 show a second embodiment of the stator for a magnet generator according to the present invention. In this example,
It is a modification of the first embodiment described above.

In the stator for the magneto generator of this embodiment, the salient pole 1a having 8 poles is provided on the annular yoke portion 1b of the stator core 1.
The connecting portion holders 12 having a U-shape corresponding to the above are supported along the circumferential direction by the number of the connecting portions 8. Each of the connection part holders 12 also has the start-up part 12a,
It is formed by 12b. Start-up parts 12a, 12
b is oriented substantially in parallel, and one end of one rising part 12a is bent so as to close one end between the parallel parts of the rising parts 12a and 12b. These connection portion holders 12 are also integrally formed with the coil winding bobbins 2 as described above.

In the connecting portion holder 12, as described above , the groove between the rising portions 12a and 12b is formed.
The connection portions 8 by the crimp terminals 7 are individually fitted and supported in a bare state in a direction along the bottom portion . Each connection portion 8 supported by these connection portion holders 12 is connected to each connection portion holder 1 with a thermosetting adhesive (for example, an epoxy adhesive) 13.
It is fixed to 2 to prevent it from coming off. By the adhesive 13, each lead wire 4 of the coil 3 and each lead wire 6 of the wire harness 5 are also fixed together to the annular yoke portion 1b of the stator core 1 via each coil winding bobbin 2.

A collar 2b is provided at the tip of each coil winding bobbin 2 so as to project therefrom. Within these collars 2b, salient poles 1
A rising portion 14a from the tip of the side plate 14 of the laminated body forming a is built in.

Such a stator for a magneto generator can also obtain the same effect as that of the first embodiment.

FIGS. 7 to 11 show a third embodiment of the stator for a magnet generator according to the present invention.

In the stator for a magneto-generator of this embodiment, each salient pole 1a is covered with an insulating resin layer 15 as means for insulating each salient pole 1a from each coil 3. The insulating resin layer 15 is formed by powder coating the heated salient pole 1a in this embodiment.

In the case of this embodiment, each connecting portion holder 12
Is formed by cutting and raising from the side plate 14 of the laminated body forming the salient pole 1a as shown in FIGS. That is, each connection part holder 12 is formed by the rising parts 12 a and 12 b cut and raised from the side plate 14. The rising portions 12a and 12b are oriented substantially parallel to each other, and one end of one rising portion 12a is bent so as to close one end between the parallel portions of the rising portions 12a and 12b.

The inner and outer surfaces of these connecting portion holders 12 are covered with an insulating resin layer 15 which covers each salient pole 1a (not shown). The insulating resin layer that covers the inner and outer surfaces of the connection portion holder 12 is the insulating resin layer 1 that covers each salient pole 1a.
5 is formed at the same time.

As described above, the connecting portion holder 12 has a groove between the rising portions 12a and 12b.
The connection portions 8 by the crimp terminals 7 are individually fitted and supported in a bare state in a direction along the bottom portion . Each connection portion 8 supported by these connection portion holders 12 is connected to each connection portion holder 1 with a thermosetting adhesive (for example, an epoxy adhesive) 13.
It is fixed to 2 to prevent it from coming off. The lead wires 4 of the coil 3 and the lead wires 6 of the wire harness 5 are also fixed to the annular yoke portion 1b of the stator core 1 together with the adhesive 13.

Such a stator for a magnet generator can also obtain the same effect as that of the first embodiment.

FIG. 12 shows a fourth embodiment of the stator for a magnet generator according to the present invention.

In the stator for the magneto-generator of this embodiment, the retaining projections 12c for narrowing the width of the inlets are provided at the inlets of the parallel rising portions 12a, 12b forming the connecting portion holders 12. The structure is provided. Such a connecting portion holder 12 is formed integrally with the coil winding bobbin 2 by resin as shown in the drawing, and the salient pole 1a.
In some cases, it may be formed in a cut-and-raised portion from the side plate 14 of the laminated body constituting the.

In this way, when the retaining projections 12c for narrowing the width of the inlets are provided at the entrances of the rising portions 12a, 12b, the connecting portion 8 fitted in the connecting portion holder 12 is secured to the retaining projections 12c. It is possible to fix and prevent the slip-off, and the application of the adhesive 13 can be omitted.

[0047]

According to the stator for a magnet generator according to the present invention, the following excellent effects can be obtained.

In the present invention, a connecting portion holder is provided on the stator core for each connecting portion , and each connecting portion holder is attached to the stator core.
With the start-up part that was supported and started up in a substantially parallel direction
Insert one end of the groove between these parallel risers in the longitudinal direction.
The bottom of the groove is formed by the bent part of the rising part that closes and between the substantially parallel rising parts of these connection part holders.
Since each connection part is individually supported in a bare state in the direction along with, and each connection part holder has at least the part in contact with the connection part made of an insulator, each connection part is fixed without using an insulating tube. It can be supported by the iron core.

Therefore, according to the present invention, the insulating tube is unnecessary, and therefore the work of fitting and fixing the insulating tube to each connection portion by the crimp terminal can be omitted, and the cost can be reduced.

Further, according to the present invention, since each connecting portion is individually supported by the connecting portion holder, the vibration resistance can be improved as compared with the conventional case.

Further, when the connecting portion holder is integrally formed of resin with the coil winding bobbin provided on the salient pole, the connecting portion holder can be formed together with the formation of the coil winding bobbin.

Further, when the connecting portion holder is formed by cutting and raising from the side plate of the laminated body forming the salient pole,
The connecting part holder can be formed when the stator core is formed.

Further, by supporting the connecting portion on the connecting portion holder and fixing the connecting portion to the connecting portion holder with an adhesive, the supporting work of the connecting portion on the stator core can be automated. Become.

Further, when the connecting portion is supported by the connecting portion holder, and the connecting portion is secured to the connecting portion holder by narrowing the inlet of the connecting portion holder, the supporting work for the stator core of the connecting portion is performed. Can be automated.

[Brief description of drawings]

1 (A) and 1 (B) are a front view and a vertical section showing a state before coil winding of a first embodiment of a stator for a magnet generator according to the present invention.

2 (A) and 2 (B) are a front view and a vertical cross section showing a state after coil winding of the first embodiment of the stator for a magneto-generator according to the present invention.

FIG. 3 is a front view showing a state before coil winding of a second embodiment of the stator for a magnet generator according to the present invention.

FIG. 4 is a vertical cross section of FIG.

FIG. 5 is a front view showing a state after coil winding of a second embodiment of the stator for a magnet generator according to the present invention.

FIG. 6 is a vertical cross section of FIG.

FIG. 7 is a front view showing a state before coil winding of a third embodiment of the stator for a magnet generator according to the present invention.

FIG. 8 is a vertical cross section of FIG.

9A and 9B are a longitudinal sectional view and a front view showing a formation state of a connecting portion holder with respect to a stator core in the third embodiment.

FIG. 10 is a front view showing a state after coil winding of a third embodiment of the stator for a magnet generator according to the present invention.

11 is a vertical cross section of FIG.

FIG. 12 is a longitudinal sectional view showing a state before coil winding of a fourth embodiment of the stator for a magnet generator according to the present invention.

FIG. 13 is a vertical cross-sectional view showing a state after winding a coil of a conventional stator for a magnet generator.

FIG. 14 is a partially cutaway side view of a conventional connecting portion between a lead wire and a lead wire.

[Explanation of symbols]

1 Stator core 1a salient pole 1b Ring yoke part 2 coil winding bobbin 2a rib 3 coils 4 Leader line 5 wire harness 6 lead wire 7 Crimp terminal 8 connections 9 Insulation tube 10 Connection part fixing clamp 11 Wire harness fixing clamp 12 Connection part holder 12a, 12b Start-up section 12c retaining protrusion 13 Thermosetting adhesive 14 Side plate of laminated body 14a Startup section 15 Insulating resin layer

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Claims (5)

(57) [Claims] 1. A coil is wound around a plurality of salient poles of a stator core, a lead wire is connected to a lead wire of the coil at a connection portion by a crimp terminal, and the connection portion is fixed to the stator core. In the stator for a magneto generator, a connecting part holder is provided for each of the connecting parts on the stator core, and each connecting part holder is supported on the stator core.
Start-up section that is held and started in a direction that is almost parallel
And one end in the longitudinal direction of the groove between these parallel raised parts
Formed by a bent portion of the rising portion that closes the space between the rising portions of the connection portion holders that are substantially parallel to each other.
Magnet generators characterized in that each of the connecting portions is individually supported in a bare state in a direction along the bottom of the groove, and at least the portion of each of the connecting portion holders that is in contact with the connecting portion is made of an insulator. Stator for machine. 2. The stator for a magneto-generator according to claim 1, wherein the connecting portion holder is formed of resin integrally with a coil winding bobbin provided on the salient pole. 3. The connecting portion holder is formed by cutting and raising a laminated body forming the salient pole from a side plate,
The stator for a magneto-generator according to claim 1, wherein at least a portion of the connection portion holder that is in contact with the connection portion is insulation-coated with an insulating resin layer. 4. The connection part supported by the connection part holder is fixed to the connection part holder by an adhesive so as not to come off. Stator for magnet generator. 5. The connection part supported by the connection part holder is fixed to the connection part holder so as not to come off by narrowing an entrance of the connection part holder. The stator for a magnet generator according to any one of the above.