JPH0139073Y2 - - Google Patents
Info
- Publication number
- JPH0139073Y2 JPH0139073Y2 JP1983167846U JP16784683U JPH0139073Y2 JP H0139073 Y2 JPH0139073 Y2 JP H0139073Y2 JP 1983167846 U JP1983167846 U JP 1983167846U JP 16784683 U JP16784683 U JP 16784683U JP H0139073 Y2 JPH0139073 Y2 JP H0139073Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- rotating shaft
- electric motor
- core
- rotor core
- 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.)
- Expired
Links
- 229910000897 Babbitt (metal) Inorganic materials 0.000 claims description 10
- 239000000696 magnetic material Substances 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 150000002505 iron Chemical class 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910003271 Ni-Fe Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
本考案はブラケツトの内部に備える固定子鉄心
及び固定子巻線と、この固定子巻線の磁界で回転
軸を中心に回転する回転子とを有する電動機に係
り、特に回転子の構造に関するものである。[Detailed description of the invention] (a) Industrial application field This invention consists of a stator core and a stator winding provided inside a bracket, and a rotor that rotates around a rotating shaft by the magnetic field of the stator winding. The present invention relates to an electric motor having a rotor, and particularly to the structure of a rotor.
(ロ) 従来技術
一般にこの種の電動機は第１図に示すような構
造となつている。すなわち１，２は小型電動機の
ブラケツトであり、このブラケツト１，２は金型
で絞り形成され、特にブラケツト２には回転軸３
が貫通する貫通穴４が加工されている。５は回転
子で上記回転軸３と複数枚の低炭素鋼板やケイ素
鋼板からなる鉄板を積層した回転子鉄心６と、こ
の回転子鉄心６の外周に設けられる永久磁石７と
からなつている。８は回転軸３の軸受メタルであ
り、自動調心構造で支持されている。９は固定子
鉄心１０、合成樹脂材１１、固定子巻線１２等か
ら構成されている。(b) Prior Art Generally, this type of electric motor has a structure as shown in FIG. That is, 1 and 2 are brackets for a small electric motor, and these brackets 1 and 2 are formed by drawing with a mold.
A through hole 4 is machined through which the through hole 4 passes. A rotor 5 is made up of the rotating shaft 3, a rotor core 6 made of a plurality of laminated iron plates made of low carbon steel plates or silicon steel plates, and permanent magnets 7 provided around the outer periphery of the rotor core 6. 8 is a bearing metal of the rotating shaft 3, which is supported in a self-aligning structure. 9 is composed of a stator core 10, a synthetic resin material 11, a stator winding 12, and the like.
このような電動機の回転子５の回転軸３は炭素
鋼、マルテンサイト鋼などを焼入れするかもしく
は浸炭、浸窒化処理を行なつて焼結金属からなる
軸受メタル８の耐摩耗性を向上させていた。また
この回転軸３には固定子鉄心６が設けられ、さら
にこの固定子鉄心６の外周にはSrO・6Fe2O3，
BaO・6Fe2O3などのフエライト磁石やSm2Co17
などの希土類コバルト金属間化合物を磁性体とし
て設けている。この後、この回転子５の回転バラ
ンスをとつてから磁性体に着磁を行ない永久磁石
７としていたが、この着磁を行なう時の強磁場の
影響で回転軸３が磁気を有する場合があつた。回
転軸３が磁気を有していると電動機の組み立て
時、特に回転軸３を軸受メタル８に挿入する時
に、回転軸３がわずかな鉄粉を付着して軸受メタ
ル８の平滑面に持ち込み、この鉄粉で軸受メタル
８の寿命の低下や、騒音及び異常振動が発生する
場合があつた。 The rotating shaft 3 of the rotor 5 of such an electric motor is made of carbon steel, martensitic steel, etc., and is hardened or carburized or nitrided to improve the wear resistance of the bearing metal 8 made of sintered metal. Ta. Further, this rotating shaft 3 is provided with a stator core 6, and the outer periphery of this stator core 6 is coated with SrO.6Fe 2 O 3 ,
Ferrite magnets such as BaO・6Fe 2 O 3 and Sm 2 Co 17
Rare earth cobalt intermetallic compounds such as these are used as magnetic materials. After this, the rotation of the rotor 5 was balanced and the magnetic material was magnetized to form the permanent magnet 7.However, the rotating shaft 3 may have magnetism due to the strong magnetic field during magnetization. Ta. If the rotating shaft 3 has magnetism, when assembling the electric motor, especially when inserting the rotating shaft 3 into the bearing metal 8, the rotating shaft 3 will adhere to a small amount of iron powder and bring it onto the smooth surface of the bearing metal 8. This iron powder sometimes shortens the life of the bearing metal 8 and causes noise and abnormal vibrations.
(ハ) 考案の目的
斯る問題点に鑑み、回転子の磁性体を着磁する
時に着磁されない回転軸を用いて、軸受メタルの
寿命低下の防止や騒音及び振動の減少を図つた電
動機を提供するものである。(c) Purpose of the invention In view of these problems, we developed an electric motor that uses a rotating shaft that is not magnetized when the magnetic material of the rotor is magnetized to prevent shortening of the life of the bearing metal and to reduce noise and vibration. This is what we provide.
(ニ) 考案の構成
本考案は固定子鉄心及び固定子巻線で形成され
る回転磁界によつて駆動する永久磁石の回転子を
有する電動機において、この電動機の回転子には
非磁性の回転軸と、この回転軸に設ける複数枚の
鉄板を積層した回転子鉄心と、この回転子鉄心の
外周に設ける永久磁石とを備えたので、電動機の
組み立て時に回転軸に鉄粉が付着するのを防止で
きるようにしたものである。(d) Structure of the invention The invention relates to an electric motor having a permanent magnet rotor that is driven by a rotating magnetic field formed by a stator core and stator windings. The rotating shaft is equipped with a rotor core made up of multiple laminated iron plates, and a permanent magnet installed around the outer periphery of the rotor core to prevent iron powder from adhering to the rotating shaft when assembling the motor. It has been made possible.
(ホ) 実施例
以下本考案の実施例を第２図に基づいて説明す
る。第２図は本考案による回転子１３であり、回
転軸１４と、この回転軸１４に設けられる回転子
鉄心１５と、この回転子鉄心１５の外周に設ける
永久磁石１６とからなつている。尚、電動機の回
転子１３以外の構成は第１図に示した電動機と同
一構成要素を用いているので説明は省略する。(E) Embodiment An embodiment of the present invention will be described below based on FIG. 2. FIG. 2 shows a rotor 13 according to the present invention, which is composed of a rotating shaft 14, a rotor core 15 provided on the rotating shaft 14, and a permanent magnet 16 provided on the outer periphery of the rotor core 15. Note that the configuration of the electric motor other than the rotor 13 uses the same constituent elements as the electric motor shown in FIG. 1, so a description thereof will be omitted.
このように構成される回転子１３の回転軸１４
の材質をJIS規格に基づくSUS304（18％Cr−８％
Ni−Feの非磁性のオーステナイト系ステンレス
鋼）製の軸に浸窒化処理を行なつたものとする
と、この回転軸１４の表面硬度は浸窒化処理を施
す前の硬度Hv（1000ｇ）170に対してHv（1000ｇ）
550と高くなり回転軸３に炭素鋼を用いた時の従
来の硬度Hv（1000ｇ）450より高い硬度を得るこ
とがき、従来と比べて耐摩耗性が向上している。
またこの回転軸１４は非磁性を示している。 The rotating shaft 14 of the rotor 13 configured in this way
The material is SUS304 (18% Cr-8%) based on JIS standards.
Assuming that a shaft made of non-magnetic austenitic stainless steel (Ni-Fe) is nitrided, the surface hardness of the rotating shaft 14 is lower than the hardness Hv (1000g) 170 before nitriding. TeHv (1000g)
550, which is higher than the conventional hardness Hv (1000g) 450 when carbon steel is used for the rotating shaft 3, and the wear resistance is improved compared to the conventional one.
Further, this rotating shaft 14 exhibits nonmagnetic properties.
従つて、この回転軸１４に低炭素鋼板やケイ素
鋼板からなる鉄板を複数枚積層した回転子鉄心１
５を設け、さらにこの回転子鉄心１６の外周にフ
エライト磁石や希土類コバルト金属間化合物から
なる磁性体を設けてた回転子１３の磁性体に強磁
場で着磁を施しても回転軸１４が着磁されること
はなく従来のように回転軸３に付着した鉄粉で軸
受メタル８の寿命が短くなつたり騒音や振動が発
生することはない。 Therefore, the rotor core 1 is formed by laminating a plurality of iron plates made of low carbon steel plates or silicon steel plates on the rotating shaft 14.
5, and a magnetic material made of a ferrite magnet or a rare earth cobalt intermetallic compound was provided on the outer periphery of the rotor core 16.Even if the magnetic material of the rotor 13 is magnetized in a strong magnetic field, the rotating shaft 14 will not stick. It is not magnetized, and the life of the bearing metal 8 is not shortened or noise or vibration is not generated due to iron powder adhering to the rotating shaft 3, as in the conventional case.
また回転軸１４の材質としては、上記の非磁性
のオーステナイト系ステンレス鋼に限るものでは
なく、表面に浸炭、浸窒化処理もしくはWC、
Al2O3などのセラミツクスのコーテイングなどの
耐摩耗性の向上処理を行なつた後に非磁性を示
し、かつ軸受メタル８と組み合わせても充分な表
面硬度が保持されるものならば良い。例えば９％
Ni鋼などである。 The material of the rotating shaft 14 is not limited to the above-mentioned non-magnetic austenitic stainless steel, but the surface may be carburized, nitrided or WC.
Any material may be used as long as it exhibits non-magnetic properties after being treated to improve wear resistance such as coating with ceramics such as Al 2 O 3 and maintains sufficient surface hardness even when combined with the bearing metal 8. For example, 9%
Such as Ni steel.
(ヘ) 考案の効果
以上のように本考案は固定子鉄心及び固定子巻
線で形成される回転磁界によつて駆動する永久磁
石の回転子を有する電動機において、この回転子
は非磁性の回転軸と、この回転軸に設ける複数枚
の鉄板を積層した回転子鉄心と、この回転子鉄心
の外周に設ける永久磁石とを備えたので、電動機
を組み立てる時に回転軸に鉄粉が付着しこの鉄粉
による軸受メタルの寿命低下や回転時の騒音発生
や異常振動の発生を防止することができる。すな
わち電動機組み立て時の不良発生を減らすことが
できるものである。(f) Effects of the invention As described above, the present invention provides a motor with a permanent magnet rotor that is driven by a rotating magnetic field formed by a stator core and stator windings. Since the motor is equipped with a shaft, a rotor core made up of a plurality of laminated iron plates attached to the rotor core, and a permanent magnet attached to the outer periphery of the rotor core, iron powder may adhere to the rotor shaft when assembling the motor. It is possible to prevent a reduction in the life of the bearing metal due to powder, as well as the generation of noise and abnormal vibration during rotation. In other words, it is possible to reduce the occurrence of defects when assembling the electric motor.
第１図は従来の電動機を示す断面図、第２図は
本考案の実施例を示す回転子の断面図である。
１０…固定子鉄心、１２…固定子巻線、１３…
回転子、１４…回転軸、１５…回転子鉄心、１６
…永久磁石。
FIG. 1 is a sectional view showing a conventional electric motor, and FIG. 2 is a sectional view of a rotor showing an embodiment of the present invention. 10... Stator core, 12... Stator winding, 13...
Rotor, 14...Rotating shaft, 15...Rotor core, 16
…permanent magnet.
Claims (1)
た回転子を固定子鉄心及び固定子巻線で形成され
る磁界で回わすように成した電動機において、前
記回転子は複数枚の鉄板を積層した回転子鉄心に
非磁性の金属製の回転軸を圧入すると共に回転子
鉄心の外周に磁性体を設けて構成した後磁性体を
着磁して永久磁石にすることを特徴とする電動機
の回転子。 1. In an electric motor configured to rotate a rotor whose rotating shaft is rotatably supported by a bearing metal using a magnetic field formed by a stator core and stator windings, the rotor is made of a plurality of laminated iron plates. Rotation of an electric motor characterized in that a rotating shaft made of a non-magnetic metal is press-fitted into a rotor core, and a magnetic material is provided on the outer periphery of the rotor core, and then the magnetic material is magnetized to become a permanent magnet. Child.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16784683U JPS6077237U (en) | 1983-10-28 | 1983-10-28 | electric motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16784683U JPS6077237U (en) | 1983-10-28 | 1983-10-28 | electric motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6077237U JPS6077237U (en) | 1985-05-30 |
| JPH0139073Y2 true JPH0139073Y2 (en) | 1989-11-22 |
Family
ID=30367106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16784683U Granted JPS6077237U (en) | 1983-10-28 | 1983-10-28 | electric motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6077237U (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49115604U (en) * | 1973-01-30 | 1974-10-03 | ||
| JPS6037029Y2 (en) * | 1979-02-13 | 1985-11-02 | 株式会社大隈鉄工所 | Permanent magnet synchronous motor rotor |
| JPS5666184U (en) * | 1979-10-24 | 1981-06-02 | ||
| JPS56164673U (en) * | 1980-05-07 | 1981-12-07 | ||
| JPS622943Y2 (en) * | 1980-10-20 | 1987-01-23 |
-
1983
- 1983-10-28 JP JP16784683U patent/JPS6077237U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6077237U (en) | 1985-05-30 |
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