JP2000004554A - Rotary electric machine and fan motor thereof - Google Patents
Rotary electric machine and fan motor thereofInfo
- Publication number
- JP2000004554A JP2000004554A JP16810498A JP16810498A JP2000004554A JP 2000004554 A JP2000004554 A JP 2000004554A JP 16810498 A JP16810498 A JP 16810498A JP 16810498 A JP16810498 A JP 16810498A JP 2000004554 A JP2000004554 A JP 2000004554A
- Authority
- JP
- Japan
- Prior art keywords
- stator core
- pair
- rotating shaft
- stator
- rotor
- 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.)
- Granted
Links
- 125000006850 spacer group Chemical group 0.000 claims description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 238000004804 winding Methods 0.000 claims description 15
- 230000007423 decrease Effects 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 230000004323 axial length Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、回転子が固定子の
外側を回転する回転電機及びファンモータに関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating electric machine in which a rotor rotates outside a stator and a fan motor.
【０００２】[0002]
【従来の技術】図３は、従来のアウターロータ型の小形
の回転電機の一種であるファンモータ１０１の構造を示
す断面図である。回転軸１０２は一対の軸受１０３及び
１０４によって回転自在に支持されている。一対の軸受
１０３及び１０４は、筒状の軸受ホルダ１０５に固定さ
れ、軸受ホルダ１０５はモータ・フレーム１０６に固定
されている。また軸受ホルダ１０５は、固定子鉄心１０
７の中央に形成された貫通孔１０８に嵌合されている。
固定子鉄心１０７は、複数枚の鋼板が積層されて構成さ
れている。固定子鉄心１０７は、軸受ホルダ１０５が貫
通する貫通孔１０８と回転軸１０２の径方向外側に向か
って突出する複数の固定子磁極１０９…を有している。
そして固定子鉄心１０７には、複数の固定子磁極１０９
…を励磁する複数の界磁巻線１１０…が巻装されてい
る。なお固定子鉄心１０７と複数の界磁巻線１１０…と
により、固定子１１１が構成されている。2. Description of the Related Art FIG. 3 is a sectional view showing a structure of a fan motor 101 which is a kind of a conventional small rotating electric machine of an outer rotor type. The rotating shaft 102 is rotatably supported by a pair of bearings 103 and 104. The pair of bearings 103 and 104 are fixed to a cylindrical bearing holder 105, and the bearing holder 105 is fixed to a motor frame 106. The bearing holder 105 is provided with the stator core 10.
7 is fitted in a through hole 108 formed in the center.
The stator core 107 is configured by stacking a plurality of steel plates. The stator core 107 has a through hole 108 through which the bearing holder 105 penetrates, and a plurality of stator magnetic poles 109 projecting radially outward of the rotating shaft 102.
The stator core 107 has a plurality of stator magnetic poles 109.
Are wound around a plurality of field windings 110. The stator 111 is composed of the stator core 107 and the plurality of field windings 110.
【０００３】回転軸１０２の軸線方向の一方側の端部に
は、回転子カバー部材１１２がブッシュ１１３を介して
嵌合されている。回転子カバー部材１１２は、環状の周
壁部１１４及びこの周壁部１１４の一端に設けられて中
心部に回転軸１０２の軸線方向の一方側の端部が固定さ
れる底壁部１１５を備えている。そして回転子カバー部
材１１２の周壁部１１４の内周には、複数の固定子磁極
１０９…と対向する永久磁石からなる複数の回転子磁極
１１６…が固定されている。回転子カバー部材１１２と
回転子磁極１１６…とにより回転子１１７が構成されて
いる。[0003] A rotor cover member 112 is fitted to one end of the rotating shaft 102 in the axial direction via a bush 113. The rotor cover member 112 includes an annular peripheral wall portion 114 and a bottom wall portion 115 provided at one end of the peripheral wall portion 114 and having a central portion to which one end in the axial direction of the rotating shaft 102 is fixed. . A plurality of rotor magnetic poles 116 composed of permanent magnets facing the plurality of stator magnetic poles 109 are fixed to the inner periphery of the peripheral wall 114 of the rotor cover member 112. A rotor 117 is constituted by the rotor cover member 112 and the rotor magnetic poles 116.
【０００４】またモータ・フレーム１０６には、界磁巻
線に通電する励磁電流を制御する制御回路を構成する電
気部品が取付けられて、回転子カバー部材１１２の開口
部側に配置された回路基板１１８の一部が支持されてい
る。On the motor frame 106, electric parts constituting a control circuit for controlling an exciting current supplied to the field winding are mounted, and a circuit board disposed on the opening side of the rotor cover member 112 is provided. A portion of 118 is supported.
【０００５】また回転子カバー部材１１２の外側には、
複数枚のブレード１１９を備えたインペラ１２０が固定
されている。インペラ１２０はカップ部材１２１の外周
部に複数枚のブレード１１９…が一体に形成された樹脂
成形品である。インペラ１２０のカップ部材１２１は、
モータ・フレーム１０６と組み合わされて外観上は外側
ケースを構成している。[0005] Outside the rotor cover member 112,
An impeller 120 having a plurality of blades 119 is fixed. The impeller 120 is a resin molded product in which a plurality of blades 119 are integrally formed on the outer periphery of the cup member 121. The cup member 121 of the impeller 120 is
In combination with the motor frame 106, it forms an outer case in appearance.
【０００６】[0006]
【発明が解決しようとする課題】従来は、一対の軸受１
０３及び１０４の間に必要とされる寸法を確保するとい
う目的から、一対の軸受１０３及び１０４を軸受ホルダ
１０５内に保持することが常識になっていた。そして軸
受ホルダ１０５をモータ・フレーム１０６と組み合わせ
ることもほぼ常識化していた。そのためどうしても従来
は、部品点数が多くなり、回転電機の価格を下げること
が難しかった。Conventionally, a pair of bearings 1
It has become common sense to hold a pair of bearings 103 and 104 in a bearing holder 105 for the purpose of ensuring the required dimensions between 03 and 104. Combining the bearing holder 105 with the motor frame 106 has also become almost common sense. Therefore inevitably Conventionally, the number of components is large, it is difficult to lower the price of the rotary electric machine.
【０００７】また従来のファンモータでは、回転軸１０
２の一方の端部にブッシュ１１３を介して回転子カバー
部材１１２を取付ける構成を採用しているため、更に部
品点数が多くなる問題があった。In the conventional fan motor, the rotating shaft 10
Since the configuration in which the rotor cover member 112 is attached to one end of the second through the bush 113 is adopted, there is a problem that the number of parts further increases.
【０００８】本発明の目的は、従来よりも部品点数が少
なくて済む回転電機また及びモータファンを提供するこ
とにある。An object of the present invention is to provide a rotating electric machine and a motor fan that require fewer parts than in the past.
【０００９】本発明の他の目的は、軸受ホルダが不要な
回転電機を製造する方法を提供することにある。Another object of the present invention is to provide a method for manufacturing a rotating electric machine that does not require a bearing holder.
【００１０】本発明の更に他の目的は、モータ・フレー
ムを用いることなく被固定部に固定できる回転電機を提
供することある。Still another object of the present invention is to provide a rotating electric machine that can be fixed to a fixed portion without using a motor frame.
【００１１】本発明の更に他の目的は、取付用スペーサ
部材の構成及び取付が容易な回転電機を提供することに
ある。Still another object of the present invention is to provide a rotating electric machine in which the configuration of the mounting spacer member and the mounting are easy.
【００１２】本発明の別の目的は、回転軸に回転子カバ
ー部材を直接固定できる回転電機を提供することにあ
る。Another object of the present invention is to provide a rotating electric machine that can directly fix a rotor cover member to a rotating shaft.
【００１３】[0013]
【課題を解決するための手段】本発明は、一対の軸受に
よって回転自在に支持された回転軸と、複数枚の鋼板が
積層されて構成されて、回転軸が貫通する貫通孔及び回
転軸の径方向外側に向かって突出する複数の固定子磁極
を有する固定子鉄心並びに固定子鉄心に巻装されて複数
の固定子磁極を励磁する複数の界磁巻線を備えた固定子
と、回転軸の軸線方向の一方側の端部に固定され且つ複
数の回転子磁極が固定子の外側を回転する回転子とを有
する回転電機を改良の対象とする。SUMMARY OF THE INVENTION The present invention comprises a rotating shaft rotatably supported by a pair of bearings, a plurality of steel plates laminated, and a through hole through which the rotating shaft penetrates and a rotating shaft. A stator having a stator core having a plurality of stator magnetic poles protruding radially outward and a plurality of field windings wound around the stator core to excite the plurality of stator magnetic poles; And a rotor having a plurality of rotor magnetic poles rotating outside the stator, the rotor being fixed to one end in the axial direction.
【００１４】本発明では、固定子鉄心の貫通孔の軸線方
向の両端部内に一対の軸受嵌合部を形成する。そして一
対の軸受嵌合部に一対の軸受を直接嵌合して固定子鉄心
に対して一対の軸受を固定する。本発明の基本的技術思
想は、従来常識であった軸受ホルダを用いるという構成
を捨てて、軸受を固定子鉄心に直接固定する点にある。
軸受ホルダを用いないようにするために、特に小形の回
転電機では、固定子鉄心の軸線方向の厚み寸法を、固定
子鉄心の貫通孔の軸線方向の両端部に一対の軸受嵌合部
を形成可能な寸法にすればよい。このようにすると従来
よりも固定子鉄心の厚み寸法が厚くなる場合が多いが、
鉄心を構成する鋼板の枚数を増やすだけでよいため、特
別に軸受ホルダを製造する場合と比べて、製品の価格を
下げることが可能になる。なお回転電機の寸法が大きく
なれば、固定子鉄心の軸線方向の厚み寸法をあえて大き
くする必要はない。In the present invention, a pair of bearing fitting portions are formed in both axial ends of the through hole of the stator core. Then, the pair of bearings are directly fitted to the pair of bearing fitting portions to fix the pair of bearings to the stator core. The basic technical idea of the present invention lies in that the bearing is fixed directly to the stator core, instead of using a bearing holder, which has been commonly used in the related art.
In order to avoid using a bearing holder, especially in a small rotating electric machine, a pair of bearing fitting portions are formed at both axial end portions of the through hole of the stator core in the axial direction of the stator core. The dimensions may be as large as possible. In this case, the thickness of the stator core is often thicker than in the past,
Since it is only necessary to increase the number of steel plates constituting the iron core, the price of the product can be reduced as compared with a case where a special bearing holder is manufactured. If the size of the rotating electric machine is increased, it is not necessary to intentionally increase the axial thickness of the stator core.
【００１５】一対の軸受嵌合部を形成する場合、固定子
鉄心を構成する複数枚の鋼板の加工精度と積層精度を高
めれば、複数枚の鋼板を積層して固定子鉄心を製造する
工程で、ある程度寸法精度の高い一対の軸受嵌合部を形
成できる。しかしながら固定子鉄心を組み立てた後に、
一対の軸受嵌合部に相当する部分の内部に切削仕上げ加
工（バニシング加工）を施して更に寸法精度を高めれ
ば、一対の軸受のそれぞれの中心軸線をできるだけ一致
させることができる一対の軸受嵌合部を形成することが
できる。When forming a pair of bearing fitting portions, if the machining accuracy and lamination accuracy of a plurality of steel plates constituting the stator core are improved, a plurality of steel plates are laminated to produce a stator core. Thus, a pair of bearing fitting portions having a certain degree of dimensional accuracy can be formed. However, after assembling the stator core,
A pair of bearing fittings, in which the central axes of the pair of bearings can be matched as much as possible by performing cutting finishing (burnishing) inside the portions corresponding to the pair of bearing fitting portions to further improve the dimensional accuracy. A part can be formed.
【００１６】このような構成を採用すると、軸受ホルダ
が不要になるだけでなく、軸受ホルダを取付けるモータ
・フレームも不要になって、部品点数を減らすことがで
きる。By adopting such a configuration, not only is the bearing holder unnecessary, but also the motor frame for mounting the bearing holder is not required, and the number of parts can be reduced.
【００１７】なお固定子鉄心の貫通孔には、回転子が固
定される回転軸の端部とは反対側の端部を支持する一方
の軸受が嵌合される一方の軸受嵌合部に隣接してスプリ
ング収納部を形成し、一方の軸受が一方の軸受嵌合部に
嵌合されたときに圧縮されるコイルスプリングをこのス
プリング収納部に嵌合すればよい。[0017] In the through hole of the stator core, one bearing for supporting one end supporting the end opposite to the end of the rotating shaft to which the rotor is fixed is fitted adjacent to one bearing fitting portion. Then, a spring housing is formed, and a coil spring that is compressed when one bearing is fitted into the one bearing fitting portion may be fitted into the spring housing.
【００１８】そしてこの構造を、特に環状の周壁部及び
この周壁部の一端に設けられて中心部に回転軸の軸線方
向の一方側の端部が固定される底壁部を備えた回転子カ
バー部材と回転子カバー部材の周壁部の内周に固定され
て複数の固定子磁極と対向する永久磁石からなる複数の
回転子磁極とを備えた回転子を備えた、いわゆるブラシ
レスのアウターロータ型の回転電機に適用すると、回転
電機の価格を従来よりも大幅に下げることができる。こ
の種の回転電機では、一般的には、界磁巻線に通電する
励磁電流を制御する制御回路を構成する電気部品の少な
くとも一部が取付けられた回路基板を、回転子カバー部
材の開口部側に配置する。This structure is particularly provided with a rotor cover having an annular peripheral wall portion and a bottom wall portion provided at one end of the peripheral wall portion and fixed at one end in the axial direction of the rotation shaft to a center portion. A so-called brushless outer rotor type comprising a rotor having a member and a plurality of rotor magnetic poles formed of permanent magnets opposed to a plurality of stator magnetic poles fixed to an inner periphery of a peripheral wall portion of the rotor cover member. When applied to a rotating electric machine, the price of the rotating electric machine can be significantly reduced as compared with the related art. In this type of rotating electric machine, generally, a circuit board on which at least a part of an electric component constituting a control circuit for controlling an exciting current supplied to a field winding is attached to an opening of a rotor cover member. Place on the side.
【００１９】モータ・フレームを用いない場合には、固
定子鉄心の被固定部に固定するための手段が必要にな
る。そこで固定子鉄心の回転軸の軸線方向の他方側に位
置する端面に、固定子鉄心を被固定部に固定する際に固
定用捩子が挿入される捩子貫通孔を備えた１以上の取付
用スペーサ部材を固定すればよい。前述の回路基板を配
置する場合に、取付用スペーサ部材を回路基板よりも軸
線方向の他方側に突出させれば、取付用スペーサ部材は
回路基板を配置するスペースを確保する機能と回路基板
を保護する機能とを発揮することになる。When the motor frame is not used, means for fixing the stator core to the fixed portion is required. Therefore, at least one mounting provided with a screw through-hole on the end face located on the other side of the axis of rotation of the stator core in the axial direction where a fixing screw is inserted when the stator core is fixed to the portion to be fixed. What is necessary is just to fix the spacer member for use. When the above-mentioned circuit board is arranged, if the mounting spacer member is protruded to the other side in the axial direction from the circuit board, the mounting spacer member functions to secure a space for arranging the circuit board and protects the circuit board. Function.
【００２０】なおこの取付用スペーサ部材の形状及び構
造は任意である。しかし、この取付用スペーサ部材を複
数枚の鋼板を積層して構成し、取付用スペーサ部材を構
成する複数枚の鋼板を固定子鉄心を構成する複数枚の鋼
板と一緒に積層すれば部品点数を減らすことができるだ
けでなく、取付用スペーサ部材の固定子鉄心への取付作
業を別に行う必要が不要になる。回路基板が小さけれ
ば、回路基板を内部に収納できるような環状形状の１つ
の取付用スペーサ部材を用いることができる。しかしな
がら回路基板の寸法が大きい場合等のように回路基板を
避ける必要がある場合や、鋼板の使用材料を少なくする
場合には、複数の取付用スペーサ部材を用いればよい。The shape and structure of the mounting spacer member are arbitrary. However, if the mounting spacer member is formed by stacking a plurality of steel plates, and the plurality of steel plates forming the mounting spacer member is stacked together with the plurality of steel plates forming the stator core, the number of parts is reduced. Not only can it be reduced, but it is not necessary to separately perform the work of mounting the mounting spacer member to the stator core. If the circuit board is small, one annular spacer member for mounting the circuit board therein can be used. However, when it is necessary to avoid the circuit board, such as when the dimensions of the circuit board are large, or when the material used for the steel plate is reduced, a plurality of mounting spacer members may be used.
【００２１】従来は、回転軸への回転子カバー部材の取
付にブッシュを用いていた。これに対して本発明のよう
に、回転子カバー部材の底壁部の中心部に、回転軸の軸
線方向の一方側の端部がきつく嵌合される嵌合孔を形成
すれば、ブッシュを用いることなく回転子カバー部材を
回転軸に取付けることができる。この場合において、特
に回転子カバー部材の底壁部の中心部に周壁部の開口部
側に向かうに従って径寸法が小さくなるように突出する
テーパ部と該テーパ部の先端部に一体に設けられて嵌合
孔を備えた筒状部とからなる嵌合構造部を設けると、嵌
合孔に回転軸をきつく嵌合しても、その際に生じる応力
が原因となって発生する回転子カバー部材の変形はテー
パ部で吸収される。そのためこの構造を採用すると、回
転子カバー部材の底壁部の厚みを薄くすることが可能に
なる。Conventionally, a bush has been used to attach a rotor cover member to a rotating shaft. On the other hand, as in the present invention, if a fitting hole is formed in the center portion of the bottom wall portion of the rotor cover member in which one end of the rotating shaft in the axial direction is tightly fitted, the bush can be formed. The rotor cover member can be mounted on the rotating shaft without using it. In this case, in particular, a tapered portion protruding from the center portion of the bottom wall portion of the rotor cover member so as to decrease in diameter toward the opening side of the peripheral wall portion is provided integrally with a tip portion of the tapered portion. When a fitting structure comprising a cylindrical portion having a fitting hole is provided, even if the rotating shaft is tightly fitted into the fitting hole, a rotor cover member generated due to stress generated at that time. Is absorbed by the tapered portion. Therefore, when this structure is employed, the thickness of the bottom wall of the rotor cover member can be reduced.
【００２２】アウターロータ型の回転電機の代表例であ
る送風機として用いられるファンモータに本発明を適用
した場合には、従来よりもファンモータの価格を安価に
することができる。そしてこの場合、前述の鋼板を積層
して形成する２以上の取付用スペーサ部材をファンモー
タのインペラが回転したときに発生する空気流によって
直接冷却されるように固定子鉄心から径方向外側に向か
って突出させる形状に構成すると、ファンモータが発生
する空気流によって取付用スペーサ部材を通して固定子
鉄心の熱が放熱されるため、回転電機の寿命を大幅に延
ばすことが可能になる。またファンモータでは、回転子
カバー部材の外側にインペラを嵌合する構造を採用する
場合が多いが、回転子カバー部材の底壁部に前述の嵌合
構造を採用して回転軸の端部と回転子カバー部材の底壁
部に嵌合させる構造を採用すると、嵌合構造を構成する
テーパ部に回転軸の端部を収容できるため、回転軸の端
部をインペラのカップ部材の内部に収納することができ
て、防塵の効果を得ることができる。When the present invention is applied to a fan motor used as a blower, which is a typical example of an outer rotor type rotating electric machine, the price of the fan motor can be made lower than in the past. In this case, two or more mounting spacer members formed by laminating the above-described steel plates are directed radially outward from the stator core so as to be directly cooled by airflow generated when the impeller of the fan motor rotates. In the configuration in which the stator core is protruded, the heat of the stator core is radiated through the mounting spacer member by the airflow generated by the fan motor, so that the life of the rotating electric machine can be greatly extended. In addition, fan motors often employ a structure in which an impeller is fitted to the outside of the rotor cover member. By adopting a structure that is fitted to the bottom wall of the rotor cover member, the end of the rotating shaft can be housed in the tapered portion that forms the fitting structure, so the end of the rotating shaft is housed inside the cup member of the impeller And a dustproof effect can be obtained.
【００２３】[0023]
【発明の実施の形態】以下図面を参照して本発明の実施
の形態の一例を詳細に説明する。図１は、ブラシレスＤ
Ｃモータを原動機として構成された回転電機の一種であ
る二相ＤＣファンモータ１に本発明を適用した本発明の
実施の形態の一例の断面図（図２のＩ−Ｉ線断面図）を
示しており、図２は図１のファンモータの回転子部分を
省略した概略の底面図を示している。これらの図におい
ては、２は回転軸である。回転軸２の両端部の近傍部分
は、それぞれボールベアリングからなる一対の軸受３及
び４によって回転自在に支持されている。そして一対の
軸受３及び４は、固定子鉄心５の中央部に形成された貫
通孔６の両端部内に形成された一対の軸受嵌合部７及び
８内に直接嵌合されて固定子鉄心５に対して固定されて
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. Figure 1 shows a brushless D
FIG. 2 is a cross-sectional view (a cross-sectional view taken along line II in FIG. 2) of an example of an embodiment of the present invention in which the present invention is applied to a two-phase DC fan motor 1 which is a kind of a rotating electric machine configured by using a C motor as a prime mover. FIG. 2 is a schematic bottom view of the fan motor of FIG. 1 from which the rotor portion is omitted. In these figures, reference numeral 2 denotes a rotation axis. The portions near both ends of the rotating shaft 2 are rotatably supported by a pair of bearings 3 and 4 each composed of a ball bearing. The pair of bearings 3 and 4 are directly fitted into a pair of bearing fitting portions 7 and 8 formed at both ends of a through hole 6 formed at the center of the stator core 5, and are connected to the stator core 5. Fixed against.
【００２４】固定子鉄心５は、複数枚の鋼板が積層され
て構成されている。そして固定子鉄心５は、前述の一対
の軸受３及び４が直接嵌合される貫通孔６を中心部に有
する環状部分９と、この環状部分９から回転軸２の径方
向外側に向かって突出し周方向に等しい間隔をあけて配
置された４つの突極型の固定子磁極１０…（図２参照）
を有している。そしてこれらの固定子磁極１０…には、
これらの磁極を励磁する界磁巻線１１…が巻装されてい
る。なお固定子鉄心５と複数の界磁巻線１１…とによ
り、固定子１２が構成されている。The stator core 5 is formed by laminating a plurality of steel plates. The stator core 5 has an annular portion 9 having a through hole 6 at the center where the above-mentioned pair of bearings 3 and 4 are directly fitted, and projects radially outward of the rotary shaft 2 from the annular portion 9. Four salient pole type stator magnetic poles 10 arranged at equal intervals in the circumferential direction (see FIG. 2)
have. And these stator poles 10 ...
Field windings 11 for exciting these magnetic poles are wound. The stator 12 is constituted by the stator core 5 and the plurality of field windings 11.
【００２５】固定子鉄心５を構成するための複数枚の鋼
板は、それぞれ環状部分９を構成する環状部と複数の固
定子磁極１０…を構成する磁極部とを備えている。軸受
嵌合部７及び８を形成する部分に位置する複数枚の鋼板
の環状部に形成される貫通孔は、軸受嵌合部７及び８の
直径と同じ直径寸法を有している。また軸受嵌合部７及
び８を形成する部分の間に位置する複数枚の鋼板の環状
部に形成される貫通孔は、軸受嵌合部７及び８の直径よ
りも小さい直径寸法を有している。その結果、固定子鉄
心５の貫通孔６の内部には、一方の軸受３と当接する環
状のストッパ部１３が突出している。軸受嵌合部８の軸
線方向の長さは、軸受４の軸線方向の長さの３倍近く長
くなっている。このような長い軸受嵌合部８を形成する
ために、固定子鉄心５の軸線方向の厚み寸法は、従来よ
りも長くなっている。そしてこの例では、実際に軸受４
が嵌合されている部分が実際の軸受嵌合部を構成してお
り、それよりもストッパ部１３寄りの部分がスプリング
収納部を構成している。このスプリング収納部には、一
方の軸受４が軸受嵌合部８に嵌合されたときに圧縮され
るコイルスプリング１４が嵌合されている。回転軸２の
他方の端部には、抜け止め金具２９が嵌合されている。The plurality of steel plates for constituting the stator core 5 each include an annular portion constituting the annular portion 9 and a magnetic pole portion constituting the plurality of stator magnetic poles 10. The through holes formed in the annular portions of the plurality of steel plates located at the portions forming the bearing fitting portions 7 and 8 have the same diameter as the diameter of the bearing fitting portions 7 and 8. Further, the through holes formed in the annular portions of the plurality of steel plates located between the portions forming the bearing fitting portions 7 and 8 have a diameter smaller than the diameter of the bearing fitting portions 7 and 8. I have. As a result, an annular stopper portion 13 that comes into contact with one of the bearings 3 protrudes inside the through hole 6 of the stator core 5. The axial length of the bearing fitting portion 8 is nearly three times longer than the axial length of the bearing 4. In order to form such a long bearing fitting portion 8, the thickness of the stator core 5 in the axial direction is longer than in the related art. And in this example, the bearing 4
The portion where is fitted forms the actual bearing fitting portion, and the portion closer to the stopper portion 13 forms the spring housing portion. A coil spring 14 that is compressed when one of the bearings 4 is fitted into the bearing fitting portion 8 is fitted into the spring housing portion. A stopper metal fitting 29 is fitted to the other end of the rotating shaft 2.
【００２６】なおこの例では、貫通孔６の軸受嵌合部７
及び８の寸法精度を高めるために、軸受嵌合部７及び８
の内部には切削仕上げ加工（バニシング加工）を施して
ある。In this example, the bearing fitting portion 7 of the through hole 6 is used.
In order to improve the dimensional accuracy of the bearing fitting portions 7 and 8,
The inside is cut and finished (burnishing).
【００２７】図１に示すように、固定子鉄心５を構成す
る鋼板のうち、軸受４側の最も外側に位置する１枚の鋼
板５ａは、対向する２つの固定子磁極１０…よりも径方
向外側に延びる２つのスペーサ取付用延長部５ｂを備え
ている。そしてこれらスペーサ取付用延長部５ｂには、
２つの取付用スペーサ部材１５，１５を形成するための
ほぼ矩形状の鋼板１５ａ…が複数枚積層されている。固
定子鉄心５を構成する複数枚の鋼板には、積層された際
に相互に嵌合される通称ダボ孔と呼ばれる複数のプレス
凸部が形成されている。そして複数枚の鋼板を積層した
状態で加圧して、各鋼板に形成されたプレス凸部を嵌め
合わせることにより、各鋼板を一体化する。取付用スペ
ーサ部材１５，１５を構成するための複数枚の鋼板１５
ａ…も同様の手法を用いて、スペーサ取付用延長部５ｂ
上に積層されて固定されている。したがってこの例で
は、固定子鉄心５を形成する工程で、取付用スペーサ部
材１５，１５も固定子鉄心５の軸線方向の端面上に一緒
に形成される。As shown in FIG. 1, among the steel plates constituting the stator core 5, one steel plate 5a located on the outermost side on the bearing 4 side is more radially than the two opposed stator magnetic poles 10. It is provided with two spacer mounting extensions 5b extending outward. And these spacer mounting extension portions 5b include:
A plurality of substantially rectangular steel plates 15a for forming the two mounting spacer members 15, 15 are laminated. The plurality of steel plates constituting the stator core 5 are formed with a plurality of press projections, commonly called dowel holes, which are fitted together when stacked. Then, a plurality of steel plates are stacked and pressurized, and press projections formed on the respective steel plates are fitted together to integrate the respective steel plates. Plural steel plates 15 for forming the mounting spacer members 15, 15
a is also used in the same manner, and the spacer mounting extension 5b is used.
It is laminated and fixed on top. Therefore, in this example, in the step of forming the stator core 5, the mounting spacer members 15, 15 are also formed together on the axial end surface of the stator core 5.
【００２８】取付用スペーサ部材１５，１５は、固定子
鉄心５を被固定部（ファンモータを取付ける部分）に固
定する際に固定用捩子が挿入される捩子貫通孔１６を備
えている。なおこの例では、２つの取付用スペーサ部材
１５，１５は、回路基板１７を配置するスペースを確保
する機能と回路基板１７を保護する機能を更に発揮す
る。そのため２つの取付用スペーサ部材１５，１５は、
回路基板１７よりも軸線方向の他方側に突出している。Each of the mounting spacer members 15 has a screw through hole 16 into which a fixing screw is inserted when the stator core 5 is fixed to a fixed portion (a portion to which a fan motor is mounted). In this example, the two mounting spacer members 15 and 15 further exert a function of securing a space for disposing the circuit board 17 and a function of protecting the circuit board 17. Therefore, the two mounting spacer members 15, 15
It protrudes from the circuit board 17 to the other side in the axial direction.
【００２９】回路基板１７には、界磁巻線１１…に通電
する励磁電流を制御する制御回路を構成する電気部品が
取付けられている。回路基板１７は、固定子鉄心５に嵌
合された図示しない絶縁樹脂製のインシュレータの端部
に植設された複数本の接続用端子１８を用いて固定子鉄
心５に対して固定されている。図１に示すように、この
回路基板１７には後述する回転子の回転子磁極の極性を
検出するホール素子１９が固定されている。回路基板１
７上に形成される制御回路は、このホール素子１９の出
力に応じて各界磁巻線１１の励磁電流を適宜に切り換え
て回転子の回転を制御する。On the circuit board 17, electric components constituting a control circuit for controlling an exciting current supplied to the field windings 11 are mounted. The circuit board 17 is fixed to the stator core 5 using a plurality of connection terminals 18 implanted at the end of an insulator (not shown) made of insulating resin fitted to the stator core 5. . As shown in FIG. 1, a Hall element 19 for detecting the polarity of a rotor magnetic pole of a rotor described later is fixed to the circuit board 17. Circuit board 1
The control circuit formed on 7 controls the rotation of the rotor by appropriately switching the exciting current of each field winding 11 according to the output of the Hall element 19.
【００３０】回転軸２の軸線方向の一方の端部２ａに
は、カップ状の回転子カバー部材２０が直接固定されて
いる。回転子カバー部材２０は、アルミ等の非磁性材料
により形成されており、環状の周壁部２１及びこの周壁
部２１の軸線方向の一端に設けられて中心部に回転軸２
の端部２ａが固定される底壁部２２を備えている。回転
子カバー部材２０の周壁部２１の内周には、４つの固定
子磁極１０…の磁極面と対向する永久磁石からなる４つ
の回転子磁極２３…が固定されている。回転子カバー部
材２０と回転子磁極２３…とにより回転子２４が構成さ
れている。そしてこの例では、回転子カバー部材２０の
底壁部２２の中心部に、周壁部２１の開口部側に向かう
に従って径寸法が小さくなるように突出するテーパ部２
２ａとこのテーパ部２２ａの先端部に一体に設けられて
嵌合孔２５を備えた筒状部２２ｂとからなる嵌合構造部
が形成されている。このようにして底壁部２２に嵌合孔
２５を形成し、この嵌合孔２５に回転軸２の端部２ａを
きつい状態で嵌合（強嵌合）すると、回転軸２の端部２
ａに回転子カバー部材２０を直接固定できるが、嵌合の
際に生じる応力が原因となって発生する回転子カバー部
材２０の変形はテーパ部２２ａで吸収される。そのため
この構造を採用すると、回転子カバー部材２０の底壁部
２２の厚みを薄くすることが可能になる。またこの例で
は、回転軸２の端部２ａはテーパ部２２ａの内部で終端
しているため、回転軸２がインペラ２６を回転子カバー
部材２０に嵌合させる際に、障害となることがなく、ま
た回転軸２の端部２ａに塵埃が付着するのを防止でき
る。A cup-shaped rotor cover member 20 is directly fixed to one end 2a of the rotating shaft 2 in the axial direction. The rotor cover member 20 is formed of a nonmagnetic material such as aluminum, and is provided at an annular peripheral wall portion 21 and one end of the peripheral wall portion 21 in the axial direction.
Is provided with a bottom wall portion 22 to which the end portion 2a is fixed. On the inner periphery of the peripheral wall portion 21 of the rotor cover member 20, four rotor magnetic poles 23 composed of permanent magnets facing the magnetic pole surfaces of the four stator magnetic poles 10 are fixed. A rotor 24 is constituted by the rotor cover member 20 and the rotor magnetic poles 23. In this example, the tapered portion 2 protrudes from the center of the bottom wall 22 of the rotor cover member 20 so that the diameter decreases toward the opening of the peripheral wall 21.
A fitting structure is formed by a cylindrical portion 22b provided with a fitting hole 25 and integrally provided at the tip of the tapered portion 22a. When the fitting hole 25 is formed in the bottom wall 22 in this manner, and the end 2a of the rotating shaft 2 is fitted (tightly fitted) in the fitting hole 25 in a tight state, the end 2 of the rotating shaft 2
Although the rotor cover member 20 can be directly fixed to a, the deformation of the rotor cover member 20 caused by the stress generated at the time of fitting is absorbed by the tapered portion 22a. Therefore, when this structure is adopted, the thickness of the bottom wall portion 22 of the rotor cover member 20 can be reduced. In this example, since the end 2a of the rotating shaft 2 terminates inside the tapered portion 22a, the rotating shaft 2 does not hinder the fitting of the impeller 26 to the rotor cover member 20. Further, it is possible to prevent dust from adhering to the end 2a of the rotating shaft 2.
【００３１】インペラ２６は、カップ状のカップ部材２
７の周壁部２１の外周に複数枚のブレード２８…が一体
に固定された構造を有している。インペラ２６は、合成
樹脂により一体成形されており、カップ部材２７は回転
子カバー部材２０に接着剤を用いて強固に固定されてい
る。図１から分かるように、この例ではインペラ２６が
回転したときに複数枚のブレード２８…から発生する空
気流によって前述の２つ取付用スペーサ部材１５，１５
が直接冷却されるように固定子鉄心５またはインペラ２
６のカップ部材２７から径方向外側に向かって突出して
いる。したがってこの例では、ファンモータ１が発生す
る空気流によって取付用スペーサ部材１５，１５を通し
て固定子鉄心５の熱が積極的に放熱されるため、ファン
モータの寿命を大幅に延ばすことができる。The impeller 26 is a cup-shaped cup member 2.
7 has a structure in which a plurality of blades 28 are integrally fixed to the outer periphery of the peripheral wall 21. The impeller 26 is integrally formed of a synthetic resin, and the cup member 27 is firmly fixed to the rotor cover member 20 using an adhesive. As can be seen from FIG. 1, in this example, when the impeller 26 rotates, the two mounting spacer members 15, 15 described above are caused by the airflow generated from the plurality of blades 28.
Stator 5 or impeller 2 so that
6 protrudes radially outward from the cup member 27. Therefore, in this example, the heat of the stator core 5 is positively dissipated through the mounting spacer members 15 and 15 by the airflow generated by the fan motor 1, so that the life of the fan motor can be greatly extended.
【００３２】上記例は、本発明をＤＣファンモータに適
用した例であるが、本発明はその他のアウタロータ型の
回転電機にも当然にして適用できるのは勿論である。ま
たモータだけでなく、アウタロータ型の発電機にも当然
適用できる。Although the above embodiment is an example in which the present invention is applied to a DC fan motor, it goes without saying that the present invention can also be applied to other outer rotor type rotating electric machines. In addition, the present invention can be applied not only to motors but also to outer rotor type generators.
【００３３】[0033]
【発明の効果】本発明によれば、従来常識であった軸受
ホルダを用いずに、軸受を固定子鉄心に直接固定するた
め、特別に軸受ホルダを製造する場合と比べて、部品点
数を少なくすることができて、製品の価格を下げること
ができる。According to the present invention, the bearing is directly fixed to the stator core without using the conventional bearing holder, so that the number of parts is reduced as compared with a case where a special bearing holder is manufactured. Can lower the price of the product.
【００３４】更に回転軸を回転子カバー部材に直接嵌合
により固定すると、更に部品点数が少なくなる利点があ
る。Further, when the rotating shaft is fixed directly to the rotor cover member by fitting, there is an advantage that the number of parts is further reduced.
【図１】ブラシレスＤＣモータを原動機として構成され
た回転電機の一種である二相ＤＣファンモータに本発明
を適用した本発明の実施の形態の一例の断面図である。FIG. 1 is a cross-sectional view of an example of an embodiment of the present invention in which the present invention is applied to a two-phase DC fan motor which is a kind of a rotating electric machine configured using a brushless DC motor as a prime mover.
【図２】図１のファンモータの回転子部分を省略した概
略の底面図を示している。FIG. 2 is a schematic bottom view of the fan motor of FIG. 1 from which a rotor portion is omitted.
【図３】従来のアウターロータ型の小形の回転電機の一
種であるファンモータの構造を示す断面図である。FIG. 3 is a sectional view showing a structure of a fan motor which is a kind of a conventional small rotating electric machine of an outer rotor type.
１ ファンモータ（回転電機） ２ 回転軸 ３，４ 軸受 ５ 固定子鉄心 ６ 貫通孔 ７，８ 軸受嵌合部 １０ 固定子磁極 １１ 界磁巻線 １２ 固定子 １４ コイルスプリング １５ 取付用スペーサ部材 １７ 回路基板 ２０ 回転子カバー部材 ２１ 周壁部 ２２ 底壁部 ２３ 回転子磁極 ２４ 回転子 ２５ 嵌合孔 ２６ インペラ DESCRIPTION OF SYMBOLS 1 Fan motor (rotary electric machine) 2 Rotating shaft 3, 4 Bearing 5 Stator iron core 6 Through hole 7, 8 Bearing fitting part 10 Stator magnetic pole 11 Field winding 12 Stator 14 Coil spring 15 Mounting spacer member 17 Circuit Substrate 20 Rotor cover member 21 Peripheral wall 22 Bottom wall 23 Rotor magnetic pole 24 Rotor 25 Fitting hole 26 Impeller
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H605 AA07 BB01 BB05 BB09 BB19 CC01 CC02 CC04 CC05 DD03 EA13 EA24 EB10 EB18 EC08 EC20 FF06 GG03 GG04 GG18 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H605 AA07 BB01 BB05 BB09 BB19 CC01 CC02 CC04 CC05 DD03 EA13 EA24 EB10 EB18 EC08 EC20 FF06 GG03 GG04 GG18
Claims (13)
た回転軸と、 複数枚の鋼板が積層されて構成されて、前記回転軸が貫
通する貫通孔及び前記回転軸の径方向外側に向かって突
出する複数の固定子磁極を有する固定子鉄心並びに前記
固定子鉄心に巻装されて前記複数の固定子磁極を励磁す
る複数の界磁巻線を備えた固定子と、 前記回転軸の軸線方向の一方側の端部に固定され且つ複
数の回転子磁極が前記固定子の外側を回転する回転子と
を有する回転電機であって、 前記固定子鉄心の前記貫通孔の前記軸線方向の両端部内
には一対の軸受嵌合部が形成され、 前記一対の軸受嵌合部に前記一対の軸受が直接嵌合され
て前記固定子鉄心に対して前記一対の軸受が固定されて
いることを特徴とする回転電機。A rotating shaft rotatably supported by a pair of bearings, and a plurality of steel plates laminated to each other; a through hole through which the rotating shaft passes; and a radially outward portion of the rotating shaft. A stator having a stator core having a plurality of projecting stator magnetic poles, and a plurality of field windings wound around the stator core to excite the plurality of stator magnetic poles; and an axial direction of the rotating shaft. And a rotor having a plurality of rotor magnetic poles rotating on the outside of the stator, the rotor being fixed to one end of the stator core, wherein both ends in the axial direction of the through hole of the stator core are provided. A pair of bearing fitting portions are formed, the pair of bearings are directly fitted to the pair of bearing fitting portions, and the pair of bearings are fixed to the stator core. Rotating electric machine.
た回転軸と、 複数枚の鋼板が積層されて構成されて、前記回転軸が貫
通する貫通孔及び前記回転軸の径方向外側に向かって突
出する複数の固定子磁極を有する固定子鉄心並びに前記
固定子鉄心に巻装されて前記複数の固定子磁極を励磁す
る複数の界磁巻線を備えた固定子と、 環状の周壁部及び前記周壁部の一端に設けられて中心部
に前記回転軸の軸線方向の一方側の端部が固定される底
壁部を備えた回転子カバー部材並びに前記回転子カバー
部材の前記周壁部の内周に固定されて前記複数の固定子
磁極と対向する永久磁石からなる複数の回転子磁極を備
えた回転子と、 前記界磁巻線に通電する励磁電流を制御する制御回路を
構成する電気部品の少なくとも一部が取付けられて、前
記カバー部材の開口部側に配置された回路基板とを有す
る回転電機であって、 前記固定子鉄心の前記軸線方向の厚み寸法は、前記固定
子鉄心の前記貫通孔の前記軸線方向の両端部に一対の軸
受嵌合部を形成可能な寸法を有しており、 前記固定子鉄心の前記貫通孔の前記軸線方向の両端部内
には前記一対の軸受嵌合部が形成され、 前記一対の軸受嵌合部に前記一対の軸受が直接嵌合され
て前記固定子鉄心に対して前記一対の軸受が固定されて
いることを特徴とする回転電機。2. A rotating shaft rotatably supported by a pair of bearings, and a plurality of steel plates laminated to form a through-hole through which the rotating shaft passes and radially outward of the rotating shaft. A stator having a stator core having a plurality of projecting stator magnetic poles, and a plurality of field windings wound around the stator core to excite the plurality of stator magnetic poles; an annular peripheral wall portion; and A rotor cover member having a bottom wall portion provided at one end of the peripheral wall portion and having a central portion to which one end in the axial direction of the rotation shaft is fixed, and an inner periphery of the peripheral wall portion of the rotor cover member A rotor having a plurality of rotor magnetic poles, each of which is made of a permanent magnet opposed to the plurality of stator magnetic poles, and an electric component constituting a control circuit for controlling an exciting current supplied to the field winding. At least a part is attached, -A rotating electrical machine having a circuit board disposed on the opening side of the member, wherein the axial thickness of the stator core is at both ends in the axial direction of the through hole of the stator core. The pair of bearing fitting portions have a dimension capable of forming a pair of bearing fitting portions, and the pair of bearing fitting portions are formed in both ends of the through hole of the stator core in the axial direction. The rotating electric machine, wherein the pair of bearings are directly fitted to the joint, and the pair of bearings are fixed to the stator core.
回転子が固定される前記回転軸の端部とは反対側の端部
を支持する一方の前記軸受が嵌合される一方の前記軸受
嵌合部に隣接してスプリング収納部が形成され、 前記スプリング収納部には前記一方の軸受が前記一方の
軸受嵌合部に嵌合されたときに圧縮されるコイルスプリ
ングが嵌合されている請求項１または２に記載の回転電
機。3. One of the bearings, into which one of the bearings supporting an end opposite to the end of the rotating shaft to which the rotor is fixed, is fitted into the through hole of the stator core. A spring storage portion is formed adjacent to the bearing fitting portion, and a coil spring that is compressed when the one bearing is fitted to the one bearing fitting portion is fitted to the spring storage portion. The rotating electric machine according to claim 1 or 2, wherein
方向の他方側に位置する端面には、前記固定子鉄心を被
固定部に固定する際に固定用捩子が挿入される捩子貫通
孔を備えた１以上の取付用スペーサ部材が固定されてい
る請求項１または２に記載の回転電機。4. A screw into which a fixing screw is inserted into an end surface of the stator core located on the other side in the axial direction of the rotation shaft when the stator core is fixed to a portion to be fixed. The rotating electric machine according to claim 1 or 2, wherein at least one mounting spacer member having a through hole is fixed.
を積層して構成され、前記取付用スペーサ部材を構成す
る前記複数枚の鋼板は、前記固定子鉄心を構成する前記
複数枚の鋼板と一緒に積層されている請求項４に記載の
回転電機。5. The mounting spacer member is formed by laminating a plurality of steel plates, and the plurality of steel plates forming the mounting spacer member are the same as the plurality of steel plates forming the stator core. The rotating electric machine according to claim 4, wherein the rotating electric machine is laminated together.
方向の他方側に位置する端面には、前記固定子鉄心を被
固定部に固定する際に固定用捩子が挿入される捩子貫通
孔を備えた１以上の取付用スペーサ部材が固定され、 前記取付用スペーサ部材は前記回路基板よりも前記軸線
方向の他方側に突出している請求項２に記載の回転電
機。6. A screw into which a fixing screw is inserted when fixing the stator core to a portion to be fixed, on an end surface of the stator core located on the other side in the axial direction of the rotating shaft. The rotating electric machine according to claim 2, wherein at least one mounting spacer member having a through hole is fixed, and the mounting spacer member protrudes to the other side in the axial direction from the circuit board.
心部には、前記回転軸の前記軸線方向の一方側の端部が
きつく嵌合される嵌合孔が形成されている請求項２に記
載の回転電機。7. A fitting hole for tightly fitting an end of the rotating shaft on one side in the axial direction is formed in a center portion of the bottom wall portion of the rotor cover member. 3. The rotating electric machine according to 2.
心部には、前記周壁部の開口部側に向かうに従って径寸
法が小さくなるように突出するテーパ部と該テーパ部の
先端部に一体に設けられて前記嵌合孔を備えた筒状部と
からなる嵌合構造部が設けられている請求項７に記載の
回転電機。8. A tapered portion projecting from the center portion of the bottom wall portion of the rotor cover member so as to decrease in diameter toward the opening of the peripheral wall portion, and a tip portion of the tapered portion. The rotating electric machine according to claim 7, further comprising a fitting structure portion provided integrally with the tubular portion provided with the fitting hole.
た回転軸と、 複数枚の鋼板が積層されて構成されて、前記回転軸が貫
通する貫通孔及び前記回転軸の径方向外側に向かって突
出する複数の固定子磁極を有する固定子鉄心並びに前記
固定子鉄心に巻装されて前記複数の固定子磁極を励磁す
る複数の界磁巻線を備えた固定子と、 前記回転軸の軸線方向の一方側の端部に固定され且つ複
数の回転子磁極が前記固定子の外側を回転する回転子と
を有する回転電機の製造方法であって、 前記固定子鉄心の前記貫通孔の前記軸線方向の両端部内
に切削仕上げ加工を施して一対の軸受嵌合部を形成し、 前記一対の軸受嵌合部に前記一対の軸受を直接嵌合して
前記固定子鉄心に対して前記一対の軸受を固定すること
を特徴とする回転電機の製造方法。9. A rotating shaft rotatably supported by a pair of bearings, and a plurality of steel plates laminated to form a through-hole through which the rotating shaft passes and radially outward of the rotating shaft. A stator having a stator core having a plurality of projecting stator magnetic poles, and a plurality of field windings wound around the stator core to excite the plurality of stator magnetic poles; and an axial direction of the rotating shaft. And a rotor having a plurality of rotor magnetic poles rotating on the outside of the stator, the rotor being fixed to one end of the rotating electric machine, wherein the axial direction of the through hole of the stator core is provided. A pair of bearing fitting portions are formed by performing a cutting finish process at both ends of the pair of bearing fitting portions, and the pair of bearings are directly fitted to the pair of bearing fitting portions to form the pair of bearings with respect to the stator core. A method for manufacturing a rotating electric machine, characterized by fixing.
れた回転軸と、 複数枚の鋼板が積層されて構成されて、前記回転軸が貫
通する貫通孔及び前記回転軸の径方向外側に向かって突
出する複数の固定子磁極を有する固定子鉄心並びに前記
固定子鉄心に巻装されて前記複数の固定子磁極を励磁す
る複数の界磁巻線を備えた固定子と、 環状の周壁部及び前記周壁部の一端に設けられて中心部
に前記回転軸の軸線方向の一方側の端部が固定される底
壁部を備えた回転子カバー部材並びに前記回転子カバー
部材の前記周壁部の内周に固定されて前記複数の固定子
磁極と対向する永久磁石からなる複数の回転子磁極を備
えた回転子と、 複数枚のブレードを備えて前記回転子の前記回転子カバ
ー部材に対して取付けられるインペラとを具備するファ
ンモータであって、 前記固定子鉄心の前記貫通孔の前記軸線方向の両端部内
には一対の軸受嵌合部が形成され、 前記一対の軸受嵌合部に前記一対の軸受が直接嵌合され
て前記固定子鉄心に対して前記一対の軸受が固定されて
いることを特徴とするファンモータ。10. A rotating shaft rotatably supported by a pair of bearings, and a plurality of steel plates laminated to form a through hole through which the rotating shaft passes and radially outward of the rotating shaft. A stator having a stator core having a plurality of projecting stator magnetic poles, and a plurality of field windings wound around the stator core to excite the plurality of stator magnetic poles; an annular peripheral wall portion; and A rotor cover member having a bottom wall portion provided at one end of the peripheral wall portion and having a central portion to which one end in the axial direction of the rotation shaft is fixed, and an inner periphery of the peripheral wall portion of the rotor cover member A rotor having a plurality of rotor magnetic poles made of permanent magnets and fixed to the plurality of stator magnetic poles, and a plurality of blades attached to the rotor cover member of the rotor. Fan motor with impeller A pair of bearing fitting portions are formed in both ends of the through hole of the stator core in the axial direction, and the pair of bearings are directly fitted to the pair of bearing fitting portions. Wherein the pair of bearings are fixed to the stator core.
線方向の他方側に位置する端面には、前記固定子鉄心を
被固定部に固定する際に固定用捩子が挿入される捩子貫
通孔を備えた２以上の取付用スペーサ部材が固定され、 前記２以上の取付用スペーサ部材は複数枚の鋼板を積層
して構成され、 前記２以上の取付用スペーサ部材は前記インペラが回転
したときに発生する空気流によって直接冷却されるよう
に前記固定子鉄心から前記径方向外側に向かって突出し
ている請求項１０に記載のファンモータ。11. A screw to which a fixing screw is inserted when fixing the stator core to a portion to be fixed, on an end surface of the stator core located on the other side in the axial direction of the rotating shaft. Two or more mounting spacer members having through holes are fixed, the two or more mounting spacer members are formed by stacking a plurality of steel plates, and the two or more mounting spacer members are rotated by the impeller. The fan motor according to claim 10, wherein the fan motor protrudes from the stator core outward in the radial direction so as to be directly cooled by a generated air flow.
中心部には、前記周壁部の開口部側に向かうに従って径
寸法が小さくなるように突出するテーパ部と該テーパ部
の先端部に一体に設けられて嵌合孔を備えた筒状部とか
らなる嵌合構造部が設けられており、 前記嵌合孔に前記回転軸の前記軸線方向の一方側の端部
がきつく嵌合されている請求項１０に記載のファンモー
タ。12. A tapered portion projecting from the center of the bottom wall portion of the rotor cover member so as to decrease in diameter toward the opening of the peripheral wall portion, and a tip portion of the tapered portion. A fitting structure comprising a tubular portion integrally provided with a fitting hole is provided, and one end of the rotating shaft on one side in the axial direction is tightly fitted to the fitting hole. The fan motor according to claim 10, wherein
の周壁部の外周に前記複数枚のブレードが配置された構
造を有しており、 前記インペラの前記カップ部材が前記回転子カバー部材
の外側に嵌合されている請求項１２に記載のファンモー
タ。13. The impeller has a structure in which the plurality of blades are arranged on the outer periphery of a peripheral wall portion of a cup-shaped cup member, and the cup member of the impeller is provided outside the rotor cover member. The fan motor according to claim 12, which is fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16810498A JP3694171B2 (en) | 1998-06-16 | 1998-06-16 | Fan motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16810498A JP3694171B2 (en) | 1998-06-16 | 1998-06-16 | Fan motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000004554A true JP2000004554A (en) | 2000-01-07 |
| JP3694171B2 JP3694171B2 (en) | 2005-09-14 |
Family
ID=15861926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16810498A Expired - Lifetime JP3694171B2 (en) | 1998-06-16 | 1998-06-16 | Fan motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3694171B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011019356A (en) * | 2009-07-09 | 2011-01-27 | Nippon Densan Corp | Brushless motor |
| CN113241896A (en) * | 2021-05-21 | 2021-08-10 | 三一重型装备有限公司 | Cutting part of heading machine and heading machine applying same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015212418A1 (en) | 2014-09-17 | 2016-03-17 | Nidec Corporation | engine |
-
1998
- 1998-06-16 JP JP16810498A patent/JP3694171B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011019356A (en) * | 2009-07-09 | 2011-01-27 | Nippon Densan Corp | Brushless motor |
| US8264108B2 (en) | 2009-07-09 | 2012-09-11 | Nidec Corporation | Brushless motor |
| CN113241896A (en) * | 2021-05-21 | 2021-08-10 | 三一重型装备有限公司 | Cutting part of heading machine and heading machine applying same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3694171B2 (en) | 2005-09-14 |
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