JPH09224340A - Armature - Google Patents

Armature

Info

Publication number
JPH09224340A
JPH09224340A JP2826996A JP2826996A JPH09224340A JP H09224340 A JPH09224340 A JP H09224340A JP 2826996 A JP2826996 A JP 2826996A JP 2826996 A JP2826996 A JP 2826996A JP H09224340 A JPH09224340 A JP H09224340A
Authority
JP
Japan
Prior art keywords
core
armature
cores
arm
blanked
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2826996A
Other languages
Japanese (ja)
Inventor
Koichi Saito
弘一 斉藤
Seiji Kawabata
聖司 河端
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP2826996A priority Critical patent/JPH09224340A/en
Publication of JPH09224340A publication Critical patent/JPH09224340A/en
Pending legal-status Critical Current

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  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

PROBLEM TO BE SOLVED: To assemble an armature easily and accurately. SOLUTION: An armature 1 is constituted of a rotor with a core lamination body 2 that is formed by laminating a plurality of sheet-shaped cores 3 and a rotary shaft 9 that is pressed into a circular opening at the center of the core lamination body 2. Each core 3 is made of a ring part 4 where the circular opening is formed, three arm parts 6 that are extended toward an outer periphery from the ring part 4, and an outer-periphery part 7 in nearly arc being connected to the tip of each arm part 6. Half-extractions (engagement parts) 8 that are deformed so that they protrudes to one surface side of the cores 3 are formed at each outer-periphery part 7. The cores 3 are aligned and overlapped so that the half-extraction parts 8 match and the half-extraction parts 8 of the adjacent cores 3 are engaged and caulked and hence are connected, thus forming the core lamination body 2.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、電機子、特に小型
モータの電機子に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armature, and more particularly to a small motor armature.

【0002】[0002]

【従来の技術】図4に示すように、従来、モータの電機
子(回転子)として、複数の板状のコア11を積層して
なるロータ10を有するものが知られている。このロー
タ10における各コア11は、金属板に対し打ち抜き加
工を施すことにより所望の形状に製造され、ロータへの
組み立ては、例えばMAC法(三井ハイテック社)と呼
ばれる方法により、コア11の軸孔12等を利用して、
各コア11を自動的に位置合わせして積層し、これらを
接着、一体化してコア積層体13とし、その後、軸孔1
2に回転軸14を嵌入することにより行われていた。
2. Description of the Related Art As shown in FIG. 4, conventionally known is an armature (rotor) of a motor having a rotor 10 formed by laminating a plurality of plate-shaped cores 11. Each core 11 in the rotor 10 is manufactured into a desired shape by punching a metal plate, and the rotor 11 is assembled into a shaft hole of the core 11 by, for example, a method called MAC method (Mitsui High-Tech Co., Ltd.). Using 12 etc.,
Each core 11 is automatically aligned and laminated, and these are adhered and integrated to form a core laminated body 13, and then the shaft hole 1
It was done by inserting the rotating shaft 14 into the shaft 2.

【0003】ところで、近年、例えばポケットベル、携
帯電話、カメラ、携帯用テープレコーダ等に用いられる
小型モータの開発が進んでおり、このモータの小型化に
伴い、ロータを構成するコアのサイズも小さくなってい
る。そのため、打ち抜かれたコアの集積、位置合わせお
よび一体化の作業には、軸孔径の相違等から、中型、大
型のコアと同様の方法、特に自動化による方法を適用す
ることができず、多大な労力を要するという問題があ
る。
By the way, in recent years, the development of small motors for use in, for example, pagers, mobile phones, cameras, portable tape recorders, etc. has progressed, and with the miniaturization of these motors, the size of the core constituting the rotor has become smaller. Has become. Therefore, for the work of accumulating, aligning and integrating the punched cores, due to the difference in the shaft hole diameter, it is not possible to apply the same method as for the medium and large-sized cores, especially the method by automation, which is a great deal. There is a problem that it requires labor.

【0004】[0004]

【発明が解決しようとする課題】本発明の目的は、組み
立てを簡単に、しかも精度良く行うことができる電機子
を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide an armature which can be assembled easily and accurately.

【0005】[0005]

【課題を解決するための手段】このような目的は、下記
(1)〜(4)の本発明により達成される。
This and other objects are achieved by the present invention which is defined below as (1) to (4).

【0006】(1) 複数の板状のコアを積層してなる
ロータを備える電機子であって、前記コアの外周部に、
コアの片面側に突出するように変形する嵌合部を設け、
対応する嵌合部同士を嵌合して前記各コアを積層したこ
とを特徴とする電機子。
(1) An armature including a rotor formed by laminating a plurality of plate-shaped cores, wherein
Providing a fitting part that deforms so as to project to one side of the core,
An armature in which corresponding cores are fitted to each other and the cores are stacked.

【0007】(2) 1つのコアに対し複数の嵌合部が
形成されている上記(1)に記載の電機子。
(2) The armature according to (1), wherein a plurality of fitting portions are formed for one core.

【0008】(3) 前記各嵌合部は、等角度間隔で形
成されている上記(2)に記載の電機子。
(3) The armature according to (2), wherein the fitting portions are formed at equal angular intervals.

【0009】(4) 前記各コアは、ロータの回転中心
部から外周へ向けて延びる腕部を有し、前記嵌合部は、
前記腕部の先端付近に形成されている上記(1)ないし
(3)のいずれかに記載の電機子。
(4) Each of the cores has an arm portion extending from the center of rotation of the rotor toward the outer periphery, and the fitting portion is
The armature according to any one of (1) to (3) above, which is formed near the tip of the arm portion.

【0010】[0010]

【発明の実施の形態】以下、本発明の電機子を添付図面
に示す好適実施例に基づいて詳細に説明する。
BEST MODE FOR CARRYING OUT THE INVENTION The armature of the present invention will be described below in detail with reference to the preferred embodiments shown in the accompanying drawings.

【0011】図1は、本発明の電機子の実施例を示す斜
視図、図2は、本発明の電機子を構成するコアの平面
図、図3は、図2中のA−A線断面図である。これらの
図に示すように、本発明の電機子1は、複数の板状のコ
ア3を積層してなるコア積層体2と、該コア積層体2の
中心の円形開口5に圧入された回転軸9とを有するロー
タで構成されている。
FIG. 1 is a perspective view showing an embodiment of an armature of the present invention, FIG. 2 is a plan view of a core which constitutes the armature of the present invention, and FIG. 3 is a sectional view taken along line AA in FIG. It is a figure. As shown in these drawings, an armature 1 of the present invention includes a core laminated body 2 formed by laminating a plurality of plate-shaped cores 3 and a rotary member press-fitted into a circular opening 5 at the center of the core laminated body 2. And a rotor having a shaft 9.

【0012】図2に示すように、本実施例におけるコア
3は、3極コアを構成するものであり、中心に回転軸9
を嵌入する円形開口5が形成されたリング部4と、該リ
ング部4より外周へ向けて延出する3つの腕部6と、各
腕部6の先端に連結されたほぼ円弧状の外周部7とで構
成されている。
As shown in FIG. 2, the core 3 in this embodiment constitutes a three-pole core, and the rotary shaft 9 is located at the center.
A ring portion 4 in which a circular opening 5 is inserted, three arm portions 6 extending from the ring portion 4 toward the outer periphery, and a substantially arc-shaped outer peripheral portion connected to the tip of each arm portion 6. 7 and 7.

【0013】3つの腕部6は、等角度間隔、すなわち中
心角120°の間隔で放射状に形成されている。コア積
層体2の腕部6が積層された部分には、コイルを形成す
るための巻線(図示せず)が施されて使用される。
The three arm portions 6 are radially formed at equal angular intervals, that is, at a central angle of 120 °. A winding (not shown) for forming a coil is applied to a portion where the arm portion 6 of the core laminated body 2 is laminated and used.

【0014】このようなコア3は、好ましくは金属板に
打ち抜き加工を施こすことにより、所望の形状に製造さ
れる。従って、このようにして製造されたコア3は、リ
ング部4と、各腕部6と、各外周部7とが一体的に形成
されている。コア3を構成する金属材料としては、例え
ば、珪素鋼板、ステンレス鋼板等が挙げられる。ただ
し、現在のところ、珪素鋼板が一般的に使われる場合が
多い。
The core 3 as described above is preferably formed into a desired shape by stamping a metal plate. Therefore, in the core 3 manufactured in this way, the ring portion 4, each arm portion 6, and each outer peripheral portion 7 are integrally formed. Examples of the metal material forming the core 3 include a silicon steel plate and a stainless steel plate. However, at present, silicon steel sheets are often used in general.

【0015】コア3の外径等の寸法は、特に限定されな
いが、本発明の電機子1は、比較的小型のモータに用い
るのに適しており、そのため、コア3の外径が比較的小
さいものに適用するのが有利である。具体的には、コア
3の外径は、2.0〜30.0mm程度であるのが好まし
く、2.0〜10.0mm程度であるのがより好ましく、
2.0〜4.2mm程度であるのがさらに好ましい。
Although the outer diameter and other dimensions of the core 3 are not particularly limited, the armature 1 of the present invention is suitable for use in a relatively small motor, and therefore the outer diameter of the core 3 is relatively small. It is advantageous to apply to things. Specifically, the outer diameter of the core 3 is preferably about 2.0 to 30.0 mm, more preferably about 2.0 to 10.0 mm,
More preferably, it is about 2.0 to 4.2 mm.

【0016】また、コア3の厚さTも特に限定されない
が、小型のモータに用いるものの場合、0.1〜1.0
mm程度であるのが好ましく、0.1〜0.5mm程度であ
るのがより好ましい。
The thickness T of the core 3 is also not particularly limited, but in the case of one used for a small motor, it is 0.1 to 1.0.
It is preferably about mm, more preferably about 0.1 to 0.5 mm.

【0017】さて、このようなコア3の外周部7には、
それぞれ、コア3の片面側に突出するように変形する半
抜き部(嵌合部)8が形成されている。この半抜き部8
は、図3に示すように、外周部7の外縁の一部を角度θ
に折り曲げ、その先端をコア3の片面側に突出させるこ
とにより形成されている。この場合、角度θは、好まし
くは10〜45°程度とされる。
Now, in the outer peripheral portion 7 of such a core 3,
Each of them has a half-blanked portion (fitting portion) 8 that is deformed so as to project to one side of the core 3. This half blank 8
As shown in FIG. 3, a part of the outer edge of the outer peripheral portion 7 has an angle θ.
It is formed by bending the end portion of the core 3 and projecting its tip toward one side of the core 3. In this case, the angle θ is preferably about 10 to 45 °.

【0018】このような半抜き部8では、コア3の図3
中下面側に凸部81が形成され、図3中上面側に、隣接
するコア3の凸部81が嵌合する凹部82が形成され
る。
In such a half-blanked portion 8, the core 3 shown in FIG.
A convex portion 81 is formed on the middle lower surface side, and a concave portion 82 into which the convex portion 81 of the adjacent core 3 is fitted is formed on the upper surface side in FIG.

【0019】半抜き部8の凸部81の最大突出量Sは、
コア3の厚さTに対し、S=0.2〜1.0Tであるの
が好ましい。最大突出量Sが0.2T未満かまたは1.
0Tを超えると、半抜き部8同士の嵌合が不十分または
不良となるおそれがあり、また、1.0Tを超えると、
半抜き部8が抜け落ちて欠損となるおそれがある。
The maximum protrusion amount S of the convex portion 81 of the half-blanked portion 8 is
It is preferable that S = 0.2 to 1.0T with respect to the thickness T of the core 3. The maximum protrusion amount S is less than 0.2T or 1.
If it exceeds 0T, fitting between the half-blanked portions 8 may be insufficient or defective, and if it exceeds 1.0T,
There is a possibility that the half-blank portion 8 may fall out and become defective.

【0020】このような半抜き部8は、コア3に対し、
プレス加工(半抜き)を施すことにより形成することが
できるが、本発明において、その形成方法は、これに限
定されるものではない。
Such a half-blanked portion 8 is
It can be formed by press working (half blanking), but in the present invention, the forming method is not limited to this.

【0021】本実施例では、各半抜き部8は、それぞ
れ、腕部6の先端付近、すなわち腕部6の延長線上に形
成されている。この部分は、外周部7において強度が最
も高い部分であり、従って、この部分に半抜き部8を形
成することにより、コア3の製造時等におけるコアの変
形を生じることなく、必要かつ十分な大きさの半抜き部
8を形成することができる。
In this embodiment, each half-blanked portion 8 is formed near the tip of the arm portion 6, that is, on the extension line of the arm portion 6. This portion is the portion having the highest strength in the outer peripheral portion 7. Therefore, by forming the half-blanked portion 8 in this portion, the core is not deformed at the time of manufacturing the core 3 or the like, and is necessary and sufficient. It is possible to form the half-blanked portion 8 having a size.

【0022】なお、半抜き部は、コア3の腕部6等に形
成することもできるが、小型モータ用の小径のコアの場
合、それに応じて腕部6も細幅となるため、腕部6に十
分な大きさの半抜き部を形成することが困難となる。ま
た、腕部6に半抜き部を形成するために、腕部6の幅を
拡大することもできるが、そのために、コイルの巻線ス
ペースが狭くなり、巻数の減少等によるモータトルクの
減少を生じることがある。
The half-blanked portion may be formed on the arm portion 6 of the core 3 or the like. However, in the case of a small-diameter core for a small motor, the arm portion 6 also becomes narrower accordingly, and therefore the arm portion is narrowed. It becomes difficult to form a half-blanked portion of 6 with a sufficient size. In addition, since the width of the arm portion 6 can be increased in order to form the half-blanked portion in the arm portion 6, the winding space of the coil is narrowed and the motor torque is reduced due to the reduction in the number of turns. May occur.

【0023】本発明では、半抜き部8をコア3の外周部
7、特に外周部7の外縁に形成するので、その形成が容
易であり、同一形状の半抜き部8を精度良く形成するこ
とができるとともに、腕部6の幅の拡大に伴う巻線スペ
ースの減少の問題がなく、必要な巻数の確保によりトル
ク特性等の性能を十分に維持することができる。
In the present invention, since the half-blanked portion 8 is formed on the outer peripheral portion 7 of the core 3, particularly on the outer edge of the outer peripheral portion 7, the formation thereof is easy and the half-blanked portion 8 having the same shape can be accurately formed. In addition, there is no problem of reducing the winding space due to the expansion of the width of the arm portion 6, and the performance such as torque characteristics can be sufficiently maintained by securing the necessary number of turns.

【0024】以上のような半抜き部8は、各コア3に対
し、好ましくは同一の形状、寸法で、同一の位置に形成
されている。そして、電機子1の組み立ての際には、各
コア3をそれらの半抜き部8が一致(または軽度に嵌
合)するように位置合わせして重ね、次いで、この積層
物をコア3の厚さ方向(回転軸方向)に加圧する。これ
により、隣接するコア3の半抜き部8同士、すなわち、
半抜き部8の凸部81と凹部82とが強固に嵌合し、か
しめられ、各コア3が結合してコア積層体2となる。そ
の後、円形開口5に回転軸9を嵌入(圧入)し、腕部6
に巻線を施してコイルを形成し、ロータが完成する。
The half-blanked portion 8 as described above is preferably formed in the same shape and size at the same position for each core 3. Then, when assembling the armature 1, the cores 3 are aligned and overlapped so that the half-blanked portions 8 thereof coincide (or slightly fit), and then this laminate is formed into the thickness of the core 3. Pressure in the vertical direction (rotational axis direction). As a result, the half-blanked portions 8 of the adjacent cores 3, that is,
The convex portion 81 and the concave portion 82 of the half-blanked portion 8 are firmly fitted and caulked, and the cores 3 are combined to form the core laminated body 2. After that, the rotary shaft 9 is fitted (press-fitted) into the circular opening 5, and the arm 6
The coil is formed by winding the wire to complete the rotor.

【0025】なお、図1中最も下側に位置するコア3に
対しては、半抜き部8の凸部81を例えばプレス加工や
研磨加工により除去し、平坦化しておくこともできる。
Incidentally, with respect to the core 3 located at the lowermost side in FIG. 1, the convex portion 81 of the half-blanked portion 8 may be removed by, for example, press working or polishing to be flattened.

【0026】このような電機子1において、コア積層体
2の高さ(回転軸方向の長さ)は、特に限定されない
が、小型のモータに用いるものの場合、3〜30mm程度
であるのが好ましく、3〜10mm程度であるのがより好
ましい。
In the armature 1 as described above, the height (length in the direction of the rotation axis) of the core laminated body 2 is not particularly limited, but when used for a small motor, it is preferably about 3 to 30 mm. More preferably, it is about 3 to 10 mm.

【0027】以上、本発明の電機子を図示の実施例に基
づき説明したが、本発明は、これに限定されるものでは
なく、例えば、1つの外周部7に複数の半抜き部8が形
成されていてもよい。また、全ての外周部7に半抜き部
8が形成されている場合に限らず、半抜き部8が形成さ
れていない外周部7があってもよい。また、コア3の極
数、形状、寸法等も、前記実施例のものに限定されな
い。
The armature of the present invention has been described above based on the illustrated embodiment, but the present invention is not limited to this. For example, a plurality of half-blanked portions 8 are formed in one outer peripheral portion 7. It may have been done. Further, it is not limited to the case where the half-blanked portions 8 are formed on all the outer peripheral portions 7, and there may be the outer-peripheral portion 7 where the half-blanked portions 8 are not formed. Further, the number of poles, the shape, the size, etc. of the core 3 are not limited to those in the above embodiment.

【0028】[0028]

【発明の効果】以上述べたように、本発明の電機子によ
れば、コアの外周部に嵌合部を設けたことにより、コア
を積層する際の位置合わせおよびコア同士の結合を容易
かつ確実に行うことができ、よって、組み立て作業を簡
単に、しかも精度良く行うことができる。
As described above, according to the armature of the present invention, by providing the fitting portion on the outer peripheral portion of the core, it is possible to easily perform the alignment and the coupling between the cores when stacking the cores. It can be performed reliably, and therefore, the assembling work can be performed easily and accurately.

【0029】また、嵌合部がコアの外周部に形成するの
で、その形成を容易かつ精度良く行うことができ、巻線
スペースに影響を与えることもないので、必要な巻数の
確保によりトルク特性等の性能を十分に維持することが
できる。
Further, since the fitting portion is formed on the outer peripheral portion of the core, it can be formed easily and accurately and does not affect the winding space. Therefore, the torque characteristic can be secured by securing the required number of turns. It is possible to sufficiently maintain the performance such as.

【0030】このような効果は、比較的小型の電機子
(小径のロータ)に適用した場合に、より顕著に発揮さ
れる。
Such an effect is more prominent when applied to a relatively small armature (small-diameter rotor).

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の電機子の実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of an armature of the present invention.

【図2】本発明の電機子を構成するコアの平面図であ
る。
FIG. 2 is a plan view of a core that constitutes the armature of the present invention.

【図3】図2中のA−A線断面図である。FIG. 3 is a sectional view taken along line AA in FIG. 2;

【図4】従来の電機子の構成を示す斜視図である。FIG. 4 is a perspective view showing a configuration of a conventional armature.

【符号の説明】[Explanation of symbols]

1 電機子 2 コア積層体 3 コア 4 リング部 5 円形開口 6 腕部 7 外周部 8 半抜き部 81 凸部 82 凹部 9 回転軸 10 ロータ 11 コア 12 軸孔 13 コア積層体 14 回転軸 DESCRIPTION OF SYMBOLS 1 Armature 2 Core laminated body 3 Core 4 Ring part 5 Circular opening 6 Arm part 7 Outer peripheral part 8 Half cut part 81 Convex part 82 Recessed part 9 Rotating shaft 10 Rotor 11 core 12 Shaft hole 13 Core laminated body 14 Rotating shaft

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 複数の板状のコアを積層してなるロータ
を備える電機子であって、 前記コアの外周部に、コアの片面側に突出するように変
形する嵌合部を設け、対応する嵌合部同士を嵌合して前
記各コアを積層したことを特徴とする電機子。
1. An armature including a rotor formed by stacking a plurality of plate-shaped cores, wherein a fitting portion that deforms so as to project to one side of the core is provided on an outer peripheral portion of the core, An armature in which the fitting portions are fitted to each other and the cores are stacked.
【請求項2】 1つのコアに対し複数の嵌合部が形成さ
れている請求項1に記載の電機子。
2. The armature according to claim 1, wherein a plurality of fitting portions are formed for one core.
【請求項3】 前記各嵌合部は、等角度間隔で形成され
ている請求項2に記載の電機子。
3. The armature according to claim 2, wherein the fitting portions are formed at equal angular intervals.
【請求項4】 前記各コアは、ロータの回転中心部から
外周へ向けて延びる腕部を有し、前記嵌合部は、前記腕
部の先端付近に形成されている請求項1ないし3のいず
れかに記載の電機子。
4. The core according to claim 1, wherein each core has an arm extending from the center of rotation of the rotor toward the outer periphery, and the fitting portion is formed near the tip of the arm. The armature according to any one.
JP2826996A 1996-02-15 1996-02-15 Armature Pending JPH09224340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2826996A JPH09224340A (en) 1996-02-15 1996-02-15 Armature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2826996A JPH09224340A (en) 1996-02-15 1996-02-15 Armature

Publications (1)

Publication Number Publication Date
JPH09224340A true JPH09224340A (en) 1997-08-26

Family

ID=12243868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2826996A Pending JPH09224340A (en) 1996-02-15 1996-02-15 Armature

Country Status (1)

Country Link
JP (1) JPH09224340A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011182488A (en) * 2010-02-26 2011-09-15 Toyota Boshoku Corp Motor core, and method of assembling the same
JP2011211806A (en) * 2010-03-29 2011-10-20 Denso Corp Method of manufacturing motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011182488A (en) * 2010-02-26 2011-09-15 Toyota Boshoku Corp Motor core, and method of assembling the same
JP2011211806A (en) * 2010-03-29 2011-10-20 Denso Corp Method of manufacturing motor

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