JP3520740B2 - Armature 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 an armature for a magnet generator, which is a stator of a magnet generator that uses an internal combustion engine or the like as a drive source to generate electric power.

[0002]

2. Description of the Related Art FIG. 6 is a plan view showing the structure of a conventional armature for a magnet generator of this type having eight poles. This armature for a magnet generator is an electric machine having an annular yoke portion 1 and a plurality (8 poles in this example) of coil-wound pole portions 2a to 2h protrudingly provided on the yoke portion 1 in a radial direction. The armature core 3, armature coils 5a to 5h wound around the coil winding pole portions 2a to 2h of the armature core 3 through the insulating resin layer 4, and the armature core 3 to the yoke portion 1 thereof. The base plate fixed with (in this figure,
Not shown. ) And had a structure with. 6
a and 6b are fixing through holes for fixing the armature core 3 to the base plate, and 7 is provided at the center of the yoke portion 1 for rotatably penetrating a rotary shaft of an internal combustion engine or the like (not shown). It is a rotary shaft through hole. A magnet rotor that rotates around the above-described armature for a magnet generator is attached to this rotating shaft.

In this example, the structure of the magnet generator armature having 8 poles is shown, but the structure of 4 poles and the structure of other multipoles are also the same.

[0004]

In the conventional magnet generator, since the armature core 3 has the structure as described above, the number of poles is determined according to the required output, that is, the coil winding pole. Since the number of parts was determined and manufactured, there was a problem that the number of types of armature core 3 increased.

An object of the present invention is to provide an armature for a magnet generator capable of meeting required output without increasing the types of armature cores.

[0006]

SUMMARY OF THE INVENTION An armature for a magnet generator, which is to be improved by the present invention, has a yoke portion and a plurality of coil-wound pole portions radially projecting from the yoke portion. An armature core, an armature coil wound around each coil winding pole portion of the armature core, and a base plate fixing the armature core at its yoke portion. .

In the armature for a magnet generator of the present invention,
The armature core is divided into a plurality of divided cores. Each of the split iron cores includes a split yoke portion and one or two coil-wound pole portions protruding from the split yoke portion. A split armature unit is configured by the split iron core and the armature coil wound around the coil winding pole portion. In these split armature units, each split yoke portion side is fixed to the base plate in a state where adjacent split magnetic arm portions are magnetically connected to each other by the split surfaces of the split yoke portions.

Since such an armature for a magneto-generator is composed of a combination of a plurality of divided armature units having the same structure, the required output can be met by increasing or decreasing the number of divided armature units. be able to. Therefore, according to the present invention, without increasing the types of armature cores,
It can handle the required output.

Further, in the armature for a magnet generator of the present invention, the armature is provided on the coil winding pole portion of the split iron core having a structure in which one or two coil winding pole portions are projectingly provided on the split yoke portion. It is equipped with a plurality of divided armature units that are configured by winding coils, and these divided armature units are placed on the side of each divided yoke section in a state in which adjacent ones are magnetically connected to each other by the divided surfaces of the divided yoke sections. The structure is fixed to the board.

With such a structure, the same effect can be obtained.

The divided armature unit as described above can be fixed to the base plate in a circular arc shape with a number smaller than the number of annular shapes. Even if the yoke part of the armature core does not form a ring,
The output characteristics of the armature coils at both ends of the split armature unit in the coupling direction are slightly degraded, and there is no problem.

Further, it is preferable to provide joint portions on the split surfaces on both sides of the split yoke portion of each split iron core. With this configuration, the adjacent split yoke portions can be easily and reliably connected. Therefore, it is possible to reduce the number of fixing points on the split yoke portion side with respect to the base plate.

[0013]

1 and 2 show a first example of an embodiment of an armature for a magnet generator according to the present invention. This example shows the case of an eight-pole structure having eight coil-wound pole portions.

In this magnet generator armature, the armature core 3 is divided into a plurality of (eight) divided iron cores 3a to 3h. Each of the split iron cores 3a to 3h is a split yoke portion 1a.
.About.1h and one coil-wound pole portion 2a to 2h protrudingly provided on the split yoke portions 1a to 1h. The armature coils 5a-5 are attached to the coil winding pole portions 2a-2h.
Each h is wound. These divided iron cores 3a to 3
h and the armature coils 5a to 5h wound around the coil winding pole portions 2a to 2h, the divided armature units 8a to 8h.
h is configured.

These divided armature units 8a-8h are
Each of the split yoke portions 1a to 1h is fixed to the base plate 9 in a state where the adjacent yoke portions 1a to 1h are magnetically connected to each other by the split surfaces of the split yoke portions 1a to 1h. Between the adjacent split yoke portions 1a to 1h, the convex joint portions 10a to 10h made of dovetails and the concave joint portion 1 made of a dovetail groove, which are provided on mutually opposing division surfaces, are provided.
They are mutually connected by fitting with 1a to 11h.
In the armature core 3 configured by connecting the divided iron cores 3a to 3h in this way, the inner periphery of the yoke portion 1 is a spigot at the outer periphery of the tip of the cylindrical boss portion 9a provided at the center of the base plate 9. A fixing screw which is fitted into the portion 9b and is screwed into the screw holes 12a to 12h of the base plate 9 made of aluminum or the like through the fixing through holes 6a to 6h respectively provided in the split yoke portions 1a to 1h. It is fixed to the base plate 9 by 13a to 13h.

Since such an armature for a magneto-generator is composed of a combination of a plurality of divided armature units 8a to 8h having the same structure, the divided armature units 8a to 8h.
It is possible to meet the required output by increasing or decreasing the number of. Therefore, according to the present invention, it is possible to meet the required output without increasing the types of armature cores.

FIG. 3 shows a second example of the embodiment of the armature for a magnet generator according to the present invention.

In this armature for a magnet generator, the number of divided armature units is reduced by 2 from that shown in the first example in order to correspond to the required output, and six divided armature units 8a are provided. .About.8f, these divided armature units 8a to 8f are sequentially connected by the divided yoke portions 1a to 1f, and fixed screws 13a to 13f are used to fix the boss portion 9a of the base plate 9.
It is fixed to.

In this case, even if the yoke portion 1 of the armature iron core 3 does not form an annular shape, the output characteristics of the armature coils 5a and 5f at both ends in the connecting direction of the divided armature units 8a to 8f will be somewhat deteriorated. Yes, no problem.

4 (A) to 4 (C) show three other examples of fixing methods for fixing the split yoke portions 1a to 1f of the armature core 3 to the boss portion 9a of the base plate 9. It is a thing.

In the case of FIG. 4 (A), each split yoke portion 1a-1
f is the boss 9a of the base plate 9 by the rivets 14a to 14f.
It is fixed to.

In the case of FIG. 4 (B), each split yoke portion 1a-1
f is fixed to the boss portion 9a of the base plate 9 by press-fitting the convex portions 15a to 15f provided on the upper surface of the boss portion 9a into the fixing through holes 6a to 6f of the split yoke portions 1a to 1f. .

In the case of FIG. 4 (C), each split yoke portion 1a-1
f is concave portions 16a to 16f provided on the upper surface of the boss portion 9a.
In addition, the convex portions 17a to 17 provided on the respective split yoke portions 1a to 1f
It is fixed to the boss portion 9a of the base plate 9 by press-fitting f.

FIG. 5 shows the structure of one segmented iron core in the third example of the embodiment of the armature for a magnet generator according to the present invention.

The split iron core 3ab has a structure in which an arc-shaped split yoke portion 1ab is provided with two coil wound pole portions 2a and 2b at different positions in the length direction of the arc. An insulating resin layer 4 is provided on each of the coil winding pole portions 2a and 2b. On both split surfaces of the split yoke portion 1ab, a protruding joint portion 10 made of a dovetail and a concave joint portion 11 made of a dovetail groove are provided as in the above-described case. The split yoke portion 1ab is provided with a fixing through hole 6ab. Although not shown, armature coils 5a and 5b are respectively wound around the coil winding pole portions 2a and 2b.

When a plurality of split iron cores having such a structure are prepared and armature coils are wound around the respective coil winding pole portions to form the armature iron core 3, the number is smaller than that in the above-mentioned example. The armature core 3 can be configured by using the divided iron cores.

The split cores in each of the above examples are each composed of a laminated core.

Although the base plate 9 is made of aluminum in the above example, it may be made of a magnetic material such as iron.

[0029]

Since the armature for a magnet generator according to the present invention is composed of a combination of a plurality of divided armature units having the same structure, the output required by increasing or decreasing the number of divided armature units. Can be adapted to. Therefore, according to the present invention, it is possible to meet the required output without increasing the types of armature cores.

[Brief description of drawings]

FIG. 1 is a plan view of a first example of an embodiment of an armature for a magnet generator according to the present invention.

FIG. 2 is a vertical sectional view of a left half portion of the armature for a magnet generator shown in FIG.

FIG. 3 is a plan view of a second example of the embodiment of the armature for a magnet generator according to the present invention.

4 (A) to (C) are vertical cross-sectional views of the left half showing three other examples of fixing methods for fixing the split yoke portion to the boss portion of the base plate in the present invention. .

FIG. 5 is a plan view showing the structure of one segmented iron core in the third example of the embodiment of the armature for a magnet generator according to the present invention.

FIG. 6 is a plan view of a conventional armature for a magnet generator.

[Explanation of symbols]

1 Yoke 1a-1h Split yoke part 2a to 2h Coil winding pole part 3 Armature iron core 4 Insulating resin layer 5a-5h armature coil 6a-6h Fixing through hole 7 Rotating shaft through hole 8a-8h Split armature unit 9 base plates 9a Boss 9b Inlay part 10a-10h Projection type joint part 11a-11h Recessed joint part 12a-12h screw holes 13a-13h fixing screw 14a-14f Rivet 15a to 15f convex portion 16a to 16f Recess 17a to 17f convex portion

Claims (4)

(57) [Claims] 1. An armature core having a yoke portion and a plurality of coil-wound pole portions projecting from the yoke portion in a radial direction, and wound around each of the coil-wound pole portions of the armature core. In an armature for a magneto-generator equipped with an armature coil mounted and a base plate fixing the armature iron core with its yoke portion, the armature iron core is divided into a plurality of divided iron cores, Each of the split iron cores is composed of a split yoke portion and one or two coil-wound pole portions projecting from the split yoke portion, and these split iron cores and the coil-wound pole portions thereof are wound. A split armature unit is configured by the armature coil, and these split armature units are magnetically connected to each other by a split surface of the split yoke portion, and the split yoke portions are connected to the base plate. An armature for a magnet generator, which is fixed. 2. A plurality of armature coils are wound around the coil-wound pole portion of the split iron core having a structure in which one or two coil-wound pole portions project from the split yoke portion. A divided armature unit is provided, and each divided armature unit is fixed to a base plate in a state where adjacent divided armature units are magnetically connected to each other by a divided surface of the divided yoke portion. An armature for a magnet generator. 3. The armature for a magnet generator according to claim 1, wherein the divided armature units are fixed to the base plate in an arc shape in a number smaller than the number of annular shapes. . 4. The electric machine for a magneto-generator according to claim 1, wherein joint parts are provided on the split surfaces on both sides of the split yoke portion of each of the split iron cores, respectively. Child.