JP3144759B2 - Armature and method of manufacturing the same - 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 having a plurality of projections and a plurality of coils wound around the projections, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, an armature 10 constituting an electric motor
The protrusions 12 extend radially as shown in FIG.
a cores 14a to 12r, and coils 16a to 16r are wound around two or more of the protrusions 12a to 12r on the iron core 14, and the protrusions 12a to 12r
The yoke 18 is attached so as to surround the.

[0003]

However, in the above-described conventional armature 10, the coils 16c to 16p of the coils 16a to 16r have the coil 1c at one end in the circumferential direction.
6b to 16o, that is, radially outside of the iron core 14, but one end in the circumferential direction of the coil 16a is
The coil 16b is disposed in the space at the root of 2r and 12a, and one end in the circumferential direction of the coil 16b overlaps the outside of the coil 16a, that is, the inside of the coil 16r.
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
And 16r, the winding resistance and inductance become non-uniform, which causes the output fluctuation during one rotation of the motor incorporating the armature 10.

The armature 10 has a hatched portion A in FIG.
As shown in FIG.
Since 16r overlaps, the width of the armature 10 increases in the axial direction, and there is a problem that the motor itself incorporating the armature 10 becomes large. For this reason, the coil 16
There is a method of pressing the a to 16r in the axial direction of the armature 10 and deforming the same to reduce the width of the armature 10 in the axial direction. In this method, however, the insulating film of the conductors forming the coils 16a to 16r is damaged. However, there is a concern that insulation failure may occur.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned various problems, and all the coils are wound so that the shapes of the coils substantially coincide with each other to prevent the output of the motor from fluctuating. It is an object of the present invention to provide an armature capable of greatly reducing the width of the armature and a method for manufacturing the same.

[0006]

According to the present invention, there is provided an armature having an iron core having a plurality of projections, wherein a plurality of coils are wound around the projections. In the above, the iron core is arranged to be deviated by a predetermined angle,
And a plurality of arbitrarily separated projections and these projections
And two elastic plate members sandwiching the elastic member.
Is, each protrusion is composed of one or more of the magnetic member, wherein
Due to the bending of the plate-like member, the protrusions move in the circumferential direction.
It is characterized by being displaceable .

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

[0008]

In addition , in the manufacture of the armature, when the coil wound by the winding device or the like is mounted on the protrusion of the iron core,
The projection can be mounted while being displaced in the circumferential direction, which is preferable.

The present invention also relates to a method for manufacturing an armature having an iron core having a plurality of projections, wherein a plurality of coils are wound around the projections. A first step of forming a plurality of coils by engaging one end of the first coil initially mounted on the iron core with the root of the first projection, and separating the other end from the projection. A second step of mounting the second coil next to the first coil and engaging one end of the second coil with a root of a second projection adjacent to the first projection; winding a third step of supporting so as to overlap the first coil mounted side in front, after performing repeated the third step, the end radially inward of the prior SL first coil And a fourth step of allowing one end of the coil to be inserted.

According to the present invention, all the coils can be mounted on the iron core in the same shape, and one end in the circumferential direction of all the coils overlaps one adjacent coil radially inward of the iron core. However, the other end can be overlapped with the other coil adjacent to the outside of the iron core in the radial direction.

[0012]

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

In FIG. 1, reference numeral 30 denotes an armature according to the present embodiment. An iron core 32 constituting the armature 30 includes a first steel plate 36 having a plurality of protrusions 34 on its outer periphery and having a high elasticity (see FIG. 2), and two protrusions having the same shape as the protrusions 34. Second made of magnetic material having
(See FIG. 3). A predetermined number of the second steel plates 38 are stacked and deviated by a predetermined angle and sandwiched by the two first steel plates 36, 36, and the second steel plate 38 and the protrusion 34 of the first steel plate 36 project. Parts (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 freely bent in the circumferential direction of the iron core 32 (the direction of the arrow B).

As shown in FIG. 1, the projections 40a to 40r have three continuous projections, for example,
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 disposed from the protrusion 40a to the protrusion 40c, the coil 42b is disposed from the protrusion 40b to the protrusion 40d, and the last coil 42r is disposed from the protrusion 40r to the protrusion 4d.
0b. Therefore, each coil 42a-4
2r denotes adjacent coils 42b to 42a and the protruding portion 40, respectively.
a to 40r are wound in a shared state, and one end of the coils 42a to 42r in the circumferential direction is radially outward of the iron core 32 with respect to one of the adjacent coils 42r to 42q. The end side is the other adjacent coil 42b to 42
a is superimposed on the inner side of the iron core 32 in the radial direction. A yoke part 44 is mounted on the outer peripheral part of the iron core 32.

The coils 42a to 42r are wound by a winding device 46 shown in FIG. This winding device 46
A first winding jig 48 and a second winding jig 5 which is configured to be able to advance and retreat with respect to the first winding jig 48 and is rotatable.
0. The first winding jig 48 includes a shaft member 52 connected to a rotation driving source (not shown), and a square 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 outside the plate member 54 (right side in the drawing).
Is provided. Shaft member 62 constituting second winding jig 50
Is provided with a rectangular plate-like member 64, and the plate-like member 6
4 is provided with a substantially rectangular winding part 66 forming a hollow part of the coils 42a to 42r to be wound.

Using this winding device 46, a coil 42a
First, the second winding jig 50 is approached 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 of the conducting wire 58 is engaged with the pin member 60 provided on the plate member 54, and the plate member 5
The conductive 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 rotation drive source (not shown), the coil 42a is wound (see FIG. 6B). When the end of the conductive wire 58 is removed from the pin member 60 and the second winding jig 50 is separated from the first winding jig 48, the coil 42a is obtained (see FIG. 6C).
The coils 42b to 42r are wound similarly.

The coil 42a wound as described above
To 42r are attached to the iron core 32. In this procedure, first, as shown in FIG.
c. At this time, the other end of the coil 42a is supported while being separated from the projection 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 projections 40e to 40g, and the other end is
Superimposed on 2b to 42d. 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 projection 40e.

Next, when mounting the coil 42f,
One end is engaged with the root of the projection 40h, and the other end is engaged with the projection 40f (see FIG. 9). At this time, by bending the projection 40f in the direction of arrow C, the coil 4
Mounting of 2f becomes easy. The coil 42f is connected to the projection 40f.
To 40h, the coils 42a to 42e
From the projections 40c to 40g can be prevented. Similarly, the coils 42g to 42r are connected to the protrusions 40i.
To 40r (see FIG. 10). At this time, the coils 42f to 42r are the coils 42e to 42
Since the coils 42f to 42r are mounted so as to be superposed on the outside of the iron core 32 in the radial direction with respect to
Are not superimposed.

When the projection 40a is bent in the direction of arrow D and the other end of the coil 42a supported separately from the projection 40a is engaged with the projection 40a, one end of the coil 42r Is sunk inside the coil 42a (see FIG. 11). Similarly, the coils 42b to 42
e is engaged with the projections 40b to 40e (see FIG. 12). At this time, similarly to the coils 42f to 42r, the coils 42b to 42e do not overlap in the axial direction of the iron core 32.

Finally, a yoke portion 44 is mounted on the outer periphery of the projections 40a to 40r.

In the armature 30 of the present embodiment, the coil 4
One end in the circumferential direction of 2a to 42r is adjacent to the coil 42b to
The other end is superimposed on the radially inner side 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, each of the coils 42a-42
The winding resistance and inductance of r substantially match.

Each of the coils 42a to 42r is
Are not overlapped with each other in the axial direction, so that the width in the axial direction can be sufficiently reduced. Therefore, the motor configured using the armature 30 can be reduced in size and weight.

[0023]

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

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

[Brief description of the 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. 1;

FIG. 3 is a schematic plan view showing a second steel plate of the armature shown in FIG. 1;

FIG. 4 is a schematic perspective view showing an iron core of the armature shown in FIG. 1;

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 is a schematic perspective view showing a state where a conductive wire is mounted on the winding device; FIG. 6B is a schematic diagram showing a state where 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 where a coil 42a is mounted on an iron core using the method for manufacturing an armature according to the embodiment of the present invention.

8 is a diagram showing a coil 4 using the method for manufacturing an armature shown in FIG. 7;
It is a schematic plan view in the state where 2b-42e was attached to the iron core.

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

FIG. 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 an armature shown in FIG.

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

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

FIG. 13 is a schematic plan view of an armature according to the related art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 30 ... Armature 32 ... Iron core 36, 38 ... Steel plate 40a-40r ... Projection part 42a-42r ... Coil 46 ... Winding device 58 ... Lead wire

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-3636 (JP, A) JP-A-55-74350 (JP, A) JP-A-2-79758 (JP, A) 41883 (JP, B1) JP 396-1603 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02K 15/09 H02K 3/28

Claims (2)

(57) [Claims] 1. An armature having an iron core having a plurality of protrusions, wherein a plurality of coils are wound around the protrusions, wherein the iron core is arranged to be deviated by a predetermined angle, and Arbitrarily separated
A plurality of projections, and two elastic plate-like members sandwiching the projections.
Is constituted by, each protrusion is composed of one or more of the magnetic member, the protrusion circumferential direction by the plate-shaped member is flexed
An armature characterized in that it can be displaced in any direction . 2. A method of manufacturing an armature having an iron core having a plurality of protrusions and winding a plurality of coils around the protrusions, wherein a plurality of coils are formed by winding a conductive wire around a winding device. Forming the first
And a second step of engaging one end of the first coil initially mounted on the iron core with the root of the first protrusion, and supporting the other end away from the protrusion. One end of a second coil mounted next to the first coil is engaged with a root of a second protrusion adjacent to the first protrusion, and the other end of the second coil is mounted on a front stage. a third step of supporting to overlap the coil, after performing repeated the third step, to submerge one end side of the front Symbol first coil wound last around the radially inner side of the coil A method of manufacturing an armature, comprising: a fourth step;