JP2015133804A - Armature and motor including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an armature including claw poles, and capable of achieving high output by enhancing the space factor of an exciting member, and to provide a motor including the same.SOLUTION: An armature 1 has a pair of armature core components 11A, 11B, and an exciting member 113 held therebetween. In the pair of armature core components 11A, 11B, at least one claw pole 111, 112 is formed, respectively, these claw poles 111, 112 are laminated in the axial direction while meshing, in the pair of armature core components 11A, 11B. The exciting member 113 is held from the axial direction, and is an annular wiring pattern formed on an electronic substrate member 11C.

Description

  The present invention relates to an armature and a motor including the same, and more particularly to an armature having an armature core including a claw magnetic pole portion and a motor including the same.

In the motor, an excitation member such as a coil obtains torque (rotational force) by the interaction between the armature disposed in the armature core and the field.
A current is supplied to an exciting member such as a coil from the outside through a commutator or the like, thereby generating an electromagnetic force.
Regarding the armature core that constitutes such an armature, there are various techniques in its structure.
For example, a motor having a claw-shaped magnetic pole is known as one type of armature.
In such a motor having a claw-type magnetic pole, it is known to increase the winding space factor in order to increase the motor output (see, for example, Patent Document 1).

Patent Document 1 discloses a motor having a claw-type magnetic pole armature (stator).
In the motor of Patent Document 1, one phase of fixing is formed by a pair of stator cores and a rectangular wire coil.
A plurality of claw-type magnetic poles are formed on the inner peripheral edges of the pair of stator cores, and when the pair of stator cores are assembled, both the claw-type magnetic poles are configured to engage with each other.
A circular rectangular coil is disposed so as to be sandwiched between the pair of fixed cores.
Three sets of these are laminated to form a three-phase armature core.

JP 2007-288156 A

In the motor described in Patent Document 1, in the armature having the claw-type magnetic pole, the winding shape is increased by using a rectangular coil instead of a round wire, thereby increasing the winding space factor and increasing the output of the motor. be able to.
However, in order to further increase the output of the motor, a technique for improving the space factor of further exciting members (members that generate a magnetic field by energization: windings, etc.) has been demanded.
Further, when a winding coil is used, the volume of the motor increases by the winding coil.
For this reason, it is desired to reduce the volume of such a winding coil and realize miniaturization including flattening of the motor.

An object of the present invention is to solve the above-described problems, and an armature that includes a claw-type magnetic pole portion and that can improve the space factor of the exciting member and achieve high output, and an armature It is in providing the motor provided.
Another object of the present invention is to provide an armature and a motor that can realize miniaturization of the motor including flattening.

  According to the armature according to the present invention, there is provided an armature having a pair of armature core parts and an excitation member sandwiched between the pair of armature core parts, wherein the pair of armature cores At least one claw-type magnetic pole part is formed in each part, and the pair of armature core parts are stacked in the axial direction with the claw-type magnetic pole parts engaged with each other, and the exciting member Is sandwiched from the axial direction, and the exciting member is solved by forming an annular wiring pattern formed on the electronic board member.

By being configured in this way, the space factor of the exciting member can be improved, which can contribute to higher output of the motor, and can realize downsizing of the motor.
Conventionally, when using a winding coil, it has been necessary to form an enamel layer on the core wire in order to maintain insulation between the windings.
However, by using this as an exciting member (wiring pattern) formed on the electronic board member, the enamel layer is unnecessary and the wiring pattern can be made dense, so that the space factor of the exciting member can be improved. It becomes. Therefore, it can contribute to the high output of a motor.
Furthermore, by using an exciting member (wiring pattern) formed on the electronic board member, no enamel layer is required, leading to shortening of the axis of the exciting member, contributing to motor miniaturization (including flattening). Can do.
Furthermore, the amount of excitation member used can be reduced.

Further, at this time, specifically, as described in claim 2, when the electronic board member is formed so that the wiring pattern is multilayered in the radial direction, the motor is reduced in the axial direction. This is suitable because it can contribute to flattening.
Or, specifically, as described in claim 3, when the electronic board member is formed so that the wiring pattern is multilayered in the axial direction, the motor is reduced in size in the radial direction. Is preferable.

  Furthermore, as described in claim 4, when the wiring pattern is made of carbon nanotubes, it is preferable because electronic conductivity (electrical conductivity) is improved as compared with a commonly used copper wiring pattern. It is.

  A motor according to the present invention includes an armature according to any one of claims 1 to 4, a field disposed opposite to the armature, and an energization mechanism that energizes the wiring pattern. And an output shaft for outputting a rotational force.

According to the present invention, in an armature having a claw-shaped magnetic pole portion, it is not necessary to use a winding coil, and the space factor can be improved by densely energizing members (wiring patterns).
And as a result of improving the space factor of an exciting member, it becomes possible to implement | achieve the high output of a motor.
Furthermore, it is possible to achieve downsizing including flattening of the motor.

It is explanatory drawing which shows schematic structure which shows the structure part of the armature which concerns on one Embodiment of this invention. It is a schematic diagram which shows the structure of the electronic board | substrate member which concerns on the 1st Example of this invention. It is a schematic diagram which shows the structure of the electronic board | substrate member which concerns on the 2nd Example of this invention. FIG. 4 is a schematic cross-sectional view taken along line AA in FIG. 3. It is a schematic diagram which shows the structure of the electronic substrate member which concerns on the 3rd Example of this invention. FIG. 6 is a schematic cross-sectional view taken along line B-B in FIG. 5.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Note that the configuration described below does not limit the present invention and can be variously modified within the scope of the gist of the present invention.
The present embodiment relates to an armature core provided with a claw-type magnetic pole part for the purpose of increasing the space factor of the excitation member and increasing the motor output by using an excitation member that is not a winding. Is.

  FIG. 1 to FIG. 6 show an embodiment of the present invention. FIG. 1 is an explanatory diagram showing a schematic configuration showing the components of the armature, and FIG. 2 is a configuration of an electronic board member according to the first embodiment. FIG. 3 is a schematic diagram showing the configuration of the electronic board member according to the second embodiment, FIG. 4 is a schematic cross-sectional view taken along line AA of FIG. 3, and FIG. 5 is the electronic board member according to the third embodiment. FIG. 6 is a schematic cross-sectional view taken along the line BB in FIG. 5.

First, an example of the configuration of the motor M according to the present embodiment will be described.
The motor M according to the present embodiment adopts a known brushless motor configuration except for the configuration of the armature 1.
Therefore, the configuration of the motor M other than the armature 1 will be briefly described.
The motor M according to the present embodiment is of an inner rotor type, a rotor provided with a shaft and a field as an output shaft, an armature 1 as a stator, and an energization mechanism for energizing the armature 1. , And is configured.

And the rotation torque is provided to a rotor by switching the electric current sent through the armature 1 according to rotation of a rotor with an electricity supply mechanism.
The rotational position of the rotor can be detected by, for example, a position detection sensor.
The position detection signal is converted into a drive signal by a control circuit (for example, a microcomputer) and transmitted to an external inverter circuit or the like, and from this inverter circuit, a current that matches the rotational position can be supplied. Yes.

  In this example, an example of an inner rotor type in which the armature is a stator is shown. However, the present invention is not limited to this and is applicable to any motor as long as it does not depart from the gist of the present invention. May be.

The armature 1 will be described.
In FIG. 1, the component part 11 of the armature 1 for one phase is shown.
In this example, since the three-phase armature 1 is used, three similar constituent parts 11 are used (U phase, V phase, W phase) to constitute the armature 1.
The component 11 includes a first armature core component 11A, a second armature core component 11B, and an electronic board member 11C.

The first armature core part 11A and the second armature core part 11B according to the present embodiment are formed in the same shape.
The first armature core part 11A and the second armature core part 11B are ring-shaped parts, and are formed, for example, by pressing a magnetic powder body coated with an insulating film.

A substantially rectangular first claw-shaped magnetic pole portion 111 stands on the periphery of the inner hole of the first armature core component 11A.
The first claw-type magnetic pole portions 111 are equally spaced along the peripheral edge of the first armature core component 11A so as to be substantially perpendicular to the main body surface (annular portion) of the first armature core component 11A. 12 (with a central angle of 30 ° apart).
Similarly, twelve second claw-type magnetic pole portions 112 are also formed in the second armature core component 11B.

The electronic board member 11 </ b> C includes a board portion 114 and an excitation member 113.
The board | substrate part 114 is a member formed in the annular | circular shape, for example, is formed as a glass epoxy board | substrate which impregnated the epoxy resin to the glass fiber sheet.
The excitation member 113 is a wiring pattern formed of carbon nanotubes, but since this configuration is the main configuration of the present invention, it will be described in detail later.
The wiring pattern may be copper which is generally used, but by using carbon nanotubes, electronic conductivity (electrical conductivity) is improved.

The component 11 of the armature 1 according to the present embodiment is configured by sandwiching an electronic board member 11C between the first armature core component 11A and the second armature core component 11B.
At this time, the first claw-type magnetic pole part 111 constituting the first armature core part 11A and the second claw-type magnetic pole part 112 constituting the second armature core part 11B are combined so as to mesh with each other. .
Thus, when the excitation member 113 is energized, a magnetic path is formed with the rotor via the first claw-type magnetic pole part 111 and the second claw-type magnetic pole part 112, so that magnetic flux flows and rotational torque is applied to the rotor. Will be granted.

Hereinafter, a wiring pattern of the excitation member 113 formed on the electronic substrate member 11C will be described.
<Example 1>
A wiring pattern according to the first embodiment will be described with reference to FIG.
In this example, the wiring pattern of the exciting member 113 is a multilayer in the radial direction.
That is, this is an example in which the excitation member 113 is formed in a ring shape in multiple layers.
FIG. 2 shows an example in which five layers of the excitation member 113 are formed.

Thus, by using the exciting member 113 as a wiring pattern, it is not necessary to use a winding coil.
Conventionally, when using a winding coil, it has been necessary to form an enamel layer on the core wire in order to maintain insulation between the windings.
However, by using the winding coil as the exciting member 113 (wiring pattern) formed on the electronic board member 11C, the shaft of the exciting member 113 can be shortened and the motor can be flattened.
Further, since the wiring pattern can be made dense, the space factor of the exciting member 113 can be improved, which can contribute to the high output of the motor M.
Furthermore, the usage amount of the exciting member 113 can be reduced.
Further, since the armature 1 is multi-layered in the radial direction, the armature 1 can be prevented from being enlarged in the axial direction, and the motor M can be reduced in size.

<Example 2>
A wiring pattern according to the second embodiment will be described with reference to FIGS. 3 and 4.
In this example, the wiring pattern of the exciting member 113 is a multilayer in the axial direction.
That is, one layer of the exciting member 113 is formed in an annular shape as shown in FIG. 3, and another layer is formed in the axial direction as shown in FIG.
That is, in FIG. 4A, two annular excitation members 113 are arranged in the axial direction.
In addition, as shown in FIG.4 (b), two or more layers may be multilayered as needed.
Thereby, the enlargement to the radial direction of the armature 1 can be suppressed, and size reduction of the motor M can be implement | achieved.

<Example 3>
A wiring pattern according to the third embodiment will be described with reference to FIGS.
This example is an example showing the composite type of Example 1 and Example 2.
In this example, the wiring pattern of the exciting member 113 is multi-layered both in the radial direction and in the axial direction.
That is, the excitation member 113 is formed in an annular three layers as shown in FIG. 5, and further two layers are formed in the axial direction as shown in FIG.
That is, in FIG. 6A, two annular three-layer exciting members 113 are arranged in the axial direction.
In addition, as shown in FIG.6 (b), two or more layers may be arrange | positioned by the axial direction as needed, and the multilayer may be arrange | positioned by radial direction as needed.
As a result, the effects of the first and second embodiments can be combined.
That is, higher output of the motor M and miniaturization (including flattening) of the motor M can be realized more effectively.

1. Armature,
11 .. Configuration part,
11A ··· first armature core parts, 111 ··· first claw-type magnetic pole part,
11B..second armature core parts, 112..second claw-type magnetic pole part,
11C ... Electronic board member, 113 ... Excitation member, 114 ... Board part,
M ・ ・ Motor

Claims (5)

An armature having a pair of armature core parts and an excitation member sandwiched between the pair of armature core parts,
Each of the pair of armature core parts is formed with at least one claw-type magnetic pole part,
The pair of armature core components are stacked in the axial direction with the claw-shaped magnetic pole portions engaged with each other, and the excitation member is sandwiched from the axial direction,
The armature according to claim 1, wherein the exciting member is an annular wiring pattern formed on an electronic board member.   The armature according to claim 1, wherein the electronic board member is formed so that the wiring patterns are multilayered in a radial direction.   The armature according to claim 1, wherein the electronic board member is formed so that the wiring pattern is multilayered in the axial direction.   The armature according to any one of claims 1 to 3, wherein the wiring pattern is made of carbon nanotubes. The armature according to any one of claims 1 to 4,
A field disposed opposite the armature;
An energization mechanism for energizing the wiring pattern;
An output shaft for outputting rotational force;
Motor with at least.

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