JPH0984309A - Armature and manufacturing method thereof - Google Patents

Abstract

(57) Abstract: An armature is wound so that all the coils have the same shape and the output fluctuation of the motor is prevented as much as possible, and the coils do not overlap in the axial direction of the armature. Provided is an armature capable of reducing the axial width of the armature and a manufacturing method thereof. SOLUTION: Coils 42a to 42r are wound around projections 40a to 40r of an iron core 32 in a state of straddling three of the projections 40a to 40r. Each coil 42a-42
r is the adjacent coils 42b to 42a and the protrusions 40a to 4
It is wound in a state of sharing two of 0r, and one end side in the circumferential direction of the coils 42a to 42r is radially inward of the iron core 32 with respect to one of the adjacent coils 42b to 42a.
The other end side overlaps the other adjacent coils 42r to 42q on the outer side in the radial direction of the iron core 32. The iron core 32
The yoke portion 44 is attached to the outer peripheral portion of the.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armature having a plurality of protrusions and a plurality of coils wound around the protrusions, and a method for manufacturing the armature.

[0002]

2. Description of the Related Art Conventionally, an armature 10 which constitutes an electric motor.
As shown in FIG. 13, the projections 12 that extend radially
A core 14 having a to 12r is provided, and coils 16a to 16r are wound around two or more of the protrusions 12a to 12r around the iron core 14, and the protrusions 12a to 12r.
The yoke portion 18 is mounted so as to surround the.

[0003]

However, in the above-mentioned conventional armature 10, the coils 16a to 16r, among the coils 16c to 16p, are the coil 1 whose one end in the circumferential direction is in contact.
6b to 16o are superposed on the outer side, that is, on the outer side in the radial direction of the iron core 14, but one end in the circumferential direction of the coil 16a is the protrusion 1
The coil 16b is arranged in the space between the roots of the coils 2r and 12a, and one end side of the coil 16b in the circumferential direction overlaps the outside of the coil 16a, that is, the inside of the coil 16r.
The coils a and 16b are shorter than the coils 16c to 16p, while the coils 16q and 16r are longer than the coils 16c to 16p. As a result, the coils 16a, 16b, 16q
There is a problem that the winding resistance and the inductance of 16r become non-uniform, which causes the output fluctuation during one rotation of the motor incorporating the armature 10.

Further, the armature 10 has a hatched portion A in the drawing.
As shown in FIG.
Since 16r is superposed, the width of the armature 10 becomes large in the axial direction, and the motor itself incorporating the armature 10 becomes large in size. For this reason, the coil 16
There is a method of pressing the a to 16r in the axial direction of the armature 10 to deform the armature 10 to reduce the width of the armature 10 in the axial direction, but in this method, the insulating coating of the conductors forming the coils 16a to 16r is damaged. However, there is a concern that insulation failure may occur.

The present invention has been made to solve the above-mentioned various problems, and it is wound so that the shapes of all the coils are substantially the same so as to prevent fluctuations in the output of the motor, and the axial direction of the armature. An object of the present invention is to provide an armature capable of greatly reducing the width of the armature and a manufacturing method thereof.

[0006]

In order to solve the above-mentioned problems, the present invention has an armature having an iron core having a plurality of protrusions, and a plurality of coils wound around the protrusions. In, the coil is wound over two or more protrusions, each coil shares a part of the protrusion with an adjacent coil, and one coil side in the circumferential direction is adjacent to one coil. Is superposed on the inner side in the radial direction of the iron core, and the other end side is superposed on the outer side in the radial direction of the core with respect to the other adjacent coil.

According to the present invention, all the wound coils have substantially the same shape, and the winding resistance and the inductance of each coil are the same, so that the output fluctuation of the motor can be prevented.

In this case, the iron core is composed of a plurality of magnetic members which have one or more protrusions and are arranged with a predetermined angle offset, and two elastic bodies which sandwich the magnetic members. A plate-shaped member, and the projection is configured to be displaceable in the circumferential direction by bending the plate-shaped member.

Therefore, in manufacturing the armature, when the coil wound by the winding device or the like is mounted on the protrusion of the iron core, the protrusion can be displaced in the circumferential direction.
It is suitable.

Further, according to the present invention, in a method of manufacturing an armature having an iron core having a plurality of protrusions and winding a plurality of coils around the protrusions, a conductor is wound around a winding device. A plurality of coils to form a plurality of coils, one end of the first coil first attached to the iron core is engaged with the root of the first protrusion, and the other end is separated from the protrusion. And a second step of supporting the first coil, and one end of the second coil, which is mounted next to the first coil, is engaged with the root of the second protrusion adjacent to the first protrusion and the other end of the second coil is engaged. A third step of supporting the first coil mounted on the front side so as to overlap with the first coil, and after repeatedly performing the third step, at least lastly wound radially inside the first coil. A fourth step of submerging one end side of the coil to be dipped.

According to the present invention, all coils can be mounted on the iron core in the same shape, and one end side in the circumferential direction of all the coils is superposed on the inner side in the radial direction of the iron core with respect to one adjacent coil. However, the other end side can be overlapped with the other adjacent coil on the outer side in the radial direction of the iron core.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the armature according to the present invention will be described in relation to the manufacturing method thereof.
This will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 30 indicates an armature according to this embodiment. The iron core 32 constituting the armature 30 includes a first steel plate 36 having a plurality of protrusions 34 on the outer peripheral portion and having a high elastic force (see FIG. 2), and two protrusions having the same shape as the protrusion 34. A second magnetic material having
Steel plate 38 (see FIG. 3). A predetermined number of the second steel plates 38 are stacked, and the second steel plates 38 are deviated by a predetermined angle and sandwiched between the two first steel plates 36, 36. The second steel plate 38 and the protrusions 34 of the first steel plate 36 project. Portions (teeth) 40a to 40r are formed (see FIGS. 1 and 4). Since the first steel plate 36 has elasticity, the protrusions 40a to 40r are configured to be flexible in the circumferential direction of the iron core 32 (direction of arrow B).

As shown in FIG. 1, the protrusions 40a to 40r have three continuous protrusions, for example, the protrusion 40.
The coils 42a to 42r are wound in a state of straddling like a to 40c and 40b to 40d. That is, the coil 42a is arranged from the protruding portion 40a to the protruding portion 40c, the coil 42b is arranged from the protruding portion 40b to the protruding portion 40d, and the last coil 42r is arranged from the protruding portion 40r to the protruding portion 4.
It is placed over 0b. Therefore, each coil 42a-4
2r is the adjacent coils 42b to 42a and the protrusion 40, respectively.
a to 40r are wound while sharing two of them, and one end side in the circumferential direction of the coils 42a to 42r is radially outside the iron core 32 with respect to one of the adjacent coils 42r to 42q and the other. The coils on the other side are adjacent to each other on the end side.
It is superposed on the inner side in the radial direction of the iron core 32 with respect to a. A yoke portion 44 is mounted on the outer peripheral portion of the iron core 32.

The coils 42a to 42r are wound by the winding device 46 shown in FIG. This winding device 46
Is a first winding jig 48 and a second winding jig 5 that is configured to be movable back and forth with respect to the first winding jig 48 and is rotatable.
With 0 and. The first winding jig 48 is composed of a shaft member 52 connected to a rotary drive source (not shown), and a rectangular plate member 54 provided at an end of the shaft member 52.
A slit 56 is defined in a part of the plate member 54, and a pin member 60 is provided on the outer side (right side in the drawing) of the plate member 54.
Is provided. Shaft member 62 that constitutes the second winding jig 50
Is provided with a quadrangular plate member 64.
4 is provided with a substantially quadrangular winding portion 66 forming a hollow portion of the wound coils 42a to 42r.

Using this winding device 46, the coil 42a
In the case of winding, first, the second winding jig 50 is brought close to the first winding jig 48, and the end of the winding portion 66 is brought into contact with the plate member 54 (see FIG. 6A). The end portion of the lead wire 58 is engaged with the pin member 60 provided on the plate-shaped member 54,
The conducting wire 58 is wound around the winding portion 66 through the slit 56 of No. 4. When the winding device 46 is rotated a predetermined number of times by energizing a rotary drive source (not shown), the coil 42a is wound (see FIG. 6B). The coil 42a is obtained by removing the end of the conducting wire 58 from the pin member 60 and separating the second winding jig 50 from the first winding jig 48 (see FIG. 6C).
The coils 42b to 42r are similarly wound.

The coil 42a wound as described above.
˜42r are attached to the iron core 32. In this procedure, as shown in FIG. 7, first, one end of the coil 42a is attached to the protrusion 40.
Engage with the root of c. At this time, the other end of the coil 42a is supported so as to be separated from the protrusion 40a. Next, one end of the coil 42b is engaged with the root of the protrusion 40d, and the other end is supported so as to overlap the coil 42a (see FIG. 8). Similarly, one ends of the coils 42c to 42e are engaged with the roots of the protrusions 40e to 40g, and the other ends thereof are connected to the coil 4
2b to 42d are superimposed. At this time, the coils 42b to
42d sequentially approaches the protrusions 40b to 40d, and the coil 4
2e comes into contact with the protrusion 40e.

Next, when mounting the coil 42f,
One end side is engaged with the root of the protrusion 40h, and the other end is engaged with the protrusion 40f (see FIG. 9). At this time, by bending the protrusion 40f in the direction of arrow C, the coil 4
2f can be easily attached. Coil 42f and projection 40f
By attaching to the coil 40a to 40h, the coils 42a to 42e
Can be prevented from falling off from the protrusions 40c to 40g. Similarly, the coils 42g to 42r are connected to the protrusion 40i.
Attach to ~ 40r (see FIG. 10). At this time, the coils 42f-42r are the same as the coils 42e-42 mounted in the previous stage.
Since it is mounted so as to overlap the outer side of the iron core 32 in the radial direction with respect to q, the coils 42f to 42r are arranged in the axial direction of the iron core 32.
Will not be superimposed.

Then, when the protrusion 40a is bent in the direction of the arrow D and the other end of the coil 42a, which is supported apart from the protrusion 40a, is engaged with the protrusion 40a, one end of the coil 42r is formed. Will sneak inside the coil 42a (see FIG. 11). Similarly, the coils 42b to 42
e is engaged with the protrusions 40b to 40e (see FIG. 12). At this time as well, like the coils 42f to 42r, the coils 42b to 42e do not overlap in the axial direction of the iron core 32.

Finally, the yoke portion 44 is mounted on the outer peripheral portion of the protrusions 40a-40r.

In the armature 30 of this embodiment, the coil 4
2a to 42r are adjacent coils 42b to one end side in the circumferential direction.
42a is superposed on the inner side in the radial direction of the iron core 32, and the other end side is superposed on the outer side in the radial direction of the iron core 32 with respect to the adjacent coils 42r to 42q. Therefore, all the coils 42a-4
Since the shapes of 2r are substantially the same, the coils 42a to 42a
The winding resistance and the inductance of r are substantially the same.

The coils 42a to 42r are provided with the iron core 32.
Since they do not overlap each other in the axial direction, the width in the axial direction can be made sufficiently small. Therefore, the motor configured using the armature 30 can be made small and lightweight.

[0023]

According to the armature and the manufacturing method thereof according to the present invention, the following effects and advantages can be obtained.

Since all the coils wound around the armature have substantially the same shape, the winding resistance and the inductance of each coil are the same, and the motor manufactured using this armature has an output during one rotation. Concerns about fluctuations are dispelled. Further, since the plurality of coils wound around the armature do not overlap in the axial direction of the armature, the motor can be made small, and a small and lightweight motor can be manufactured.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an armature according to an embodiment of the present invention.

FIG. 2 is a schematic plan view showing a first steel plate of the armature of FIG.

FIG. 3 is a schematic plan view showing a second steel plate of the armature shown in FIG.

FIG. 4 is a schematic perspective view showing an iron core of the armature shown in FIG.

FIG. 5 is a schematic perspective view showing a winding device used in the method for manufacturing an armature according to the embodiment of the present invention.

6A and 6B are diagrams showing a method of using the winding device shown in FIG. 5, FIG. 6A being a schematic perspective view showing a state in which a conductive wire is attached to the winding device, and FIG. 6B being a diagram showing a state in which a coil is wound. Perspective view,
FIG. 6C is a schematic perspective view of a state where the wound coil is taken out.

FIG. 7 is a schematic plan view showing a state in which the coil 42a is mounted on the iron core using the method for manufacturing an armature according to the embodiment of the present invention.

8 is a diagram illustrating a coil 4 manufactured by using the method for manufacturing the armature shown in FIG.
It is a schematic plan view of the state where 2b-42e were attached to the iron core.

9 is a view showing a coil 4 using the method for manufacturing the armature shown in FIG.
It is a schematic plan view of the state where 2f was attached to the iron core.

10 is a schematic plan view showing a state where coils 42g to 42r are mounted on an iron core using the method for manufacturing the armature shown in FIG.

11 is a schematic plan view showing a state in which the coil 42a is engaged with the protrusion 40a using the method for manufacturing the armature shown in FIG.

FIG. 12 is a schematic plan view showing a state where the coils 42b to 42e are engaged with the protrusions 40b to 40e by using the method for manufacturing the armature shown in FIG.

FIG. 13 is a schematic plan view of an armature according to a conventional technique.

[Explanation of symbols]

30 ... Armature 32 ... Iron core 36, 38 ... Steel plate 40a-40r ... Protrusion 42a-42r ... Coil 46 ... Winding device 58 ... Conductor wire

Claims (3)

[Claims] 1. An armature having an iron core having a plurality of protrusions, wherein the protrusions are wound with a plurality of coils, and the coil is wound over two or more protrusions. Each coil shares a part of the protrusion with an adjacent coil, and one end side in the circumferential direction of all the coils overlaps one coil adjacent to the inside in the radial direction of the iron core, and the other end side is adjacent. An armature which is superposed on the outer side of the iron core in the radial direction with respect to the other coil. 2. The armature according to claim 1, wherein the iron core has one or more protrusions, and the magnetic members are sandwiched between a plurality of magnetic members that are arranged so as to be offset by a predetermined angle. An armature, comprising: a plate-shaped member made of two elastic bodies, and the projection being configured to be displaceable in the circumferential direction by bending the plate-shaped member. 3. An armature manufacturing method comprising an iron core having a plurality of protrusions, wherein a plurality of coils are wound around the protrusions, and a plurality of coils are formed by winding a wire around a winding device. Forming the first
And a second step in which one end side of the first coil first mounted on the iron core is engaged with the root part of the first projection part and the other end side is supported separately from the projection part, One end of a second coil that is mounted next to the first coil is engaged with a root of a second protrusion that is adjacent to the first protrusion, and the other end of the second coil is attached to the preceding stage. Second step of supporting the coil so as to be superposed on the first coil, and after repeatedly performing the third step, at least one end side of the coil wound lastly is radially inside the first coil. A fourth step, and a method for manufacturing an armature, comprising: