JPH0747976Y2 - High speed reluctance motor rotor - Google Patents
High speed reluctance motor rotorInfo
- Publication number
- JPH0747976Y2 JPH0747976Y2 JP4374691U JP4374691U JPH0747976Y2 JP H0747976 Y2 JPH0747976 Y2 JP H0747976Y2 JP 4374691 U JP4374691 U JP 4374691U JP 4374691 U JP4374691 U JP 4374691U JP H0747976 Y2 JPH0747976 Y2 JP H0747976Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- reluctance motor
- outer peripheral
- magnetic pole
- magnetic
- 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 - Lifetime
Links
Landscapes
- Synchronous Machinery (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、工作機械のスピンドル
やターボポンプ等を駆動する高速リラクタンスモータに
関し、とくに回転子の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high speed reluctance motor for driving a spindle or turbo pump of a machine tool, and more particularly to a rotor structure.
【０００２】[0002]
【従来の技術】従来、リラクタンスモータは、例えば２
極の回転子の場合、図２に示すように、円筒状の固定子
１の内側に空隙を介して対向するように、円筒状の磁性
体の一部を切り欠いて複数の突極に形成した磁極部２を
備えた回転子３を設けたものが開示されている（例え
ば、実開平１−１６２７６９号公報）。2. Description of the Related Art Conventionally, a reluctance motor has, for example,
In the case of a pole rotor, as shown in FIG. 2, a cylindrical magnetic body is partially cut away to form a plurality of salient poles so as to face the inside of the cylindrical stator 1 with a gap. It is disclosed that the rotor 3 provided with the magnetic pole portion 2 is provided (for example, Japanese Utility Model Laid-Open No. 1-162769).
【０００３】[0003]
【考案が解決しようとする課題】ところが、上記構成で
は、高速回転になった場合、この切り欠き部分に空気を
巻き込んで大きな空気損を生じ、モータの効率が低下し
たり、電流が増加して電源容量の増加を余儀なくされた
り、また空気攪拌による騒音が生じるなどの欠点があっ
た。本考案は、高速回転時の空気損を低減し、効率の高
い、小形で静かな高速形のリラクタンスモータを提供す
ることを目的とするものである。However, in the above configuration, when the motor rotates at a high speed, air is entrapped in the cutout portion to cause a large air loss, which reduces the efficiency of the motor and increases the current. There were drawbacks such as an increase in power supply capacity and noise caused by air agitation. An object of the present invention is to provide a small, quiet, high-speed type reluctance motor which is highly efficient, reduces air loss during high-speed rotation.
【０００４】[0004]
【課題を解決するための手段】本考案は、突極に形成さ
れた複数の磁極部を備えたリラクタンスモータの回転子
において、前記磁極部の側面に軸方向に複数の穴を有す
る多孔部を設け、前記多孔部の外周面を前記磁極部の外
周面と同一円筒面上に形成したものである。According to the present invention, in a rotor of a reluctance motor having a plurality of magnetic pole portions formed on salient poles, a porous portion having a plurality of holes in the axial direction is formed on a side surface of the magnetic pole portion. The outer peripheral surface of the porous portion is formed on the same cylindrical surface as the outer peripheral surface of the magnetic pole portion.
【０００５】[0005]
【作用】磁極部の両側面部に設けられた多孔部の外周部
は磁極部の外周と同一の平滑な円筒面で形成されている
ので、高速回転の場合でも従来の切り欠き部で発生する
ような空気損は発生しない。The outer peripheral portion of the porous portion provided on both side surfaces of the magnetic pole portion is formed by the same smooth cylindrical surface as the outer periphery of the magnetic pole portion, so that it may occur in the conventional notch even at high speed rotation. Air loss does not occur.
【０００６】[0006]
【実施例】本考案を図に示す実施例について説明する。
図１（ａ）は本考案の実施例を示す２極用の回転子３の
正面図で、円板状の薄板鋼板の中央部に半径方向に伸び
る磁極部２を形成し、中心に回転軸４を挿入する軸穴２
１設け、磁極部２の両側に半月状の多孔部５を設けて積
層鉄心を形成し、積層鉄心を所定枚数積層して回転子３
を構成している。多孔部５には多数の軸方向に伸びる小
径の穴５１を設けて磁気抵抗を大きくしてある。したが
って、多孔部５の外周部５２は磁極部２の外周と同一の
平滑な円筒面で形成されているので、高速回転の場合で
も切り欠き部で発生するような空気損は発生しない。な
お、多孔部５の穴と穴の間の保持部５３を遠心力に耐え
られる限度まで細くし磁気抵抗を大きくすることによっ
て、磁極部２からの漏洩磁束を抑制することができる。
また、多孔部５の穴５１の形状は図１（ｂ）に示すよう
に、回転子３の外周に向かって細長い穴でも良い。ま
た、図１（ｃ）に示すように、多孔部５の細長い穴５１
を回転子３の外周に開口するようにしてもよく、この場
合、穴５１に合成樹脂等の非磁性材料の充填部５４を遠
心力で飛び出さないように接着で固定して多孔部５の外
周部５２を平滑にしてもよい。また、多孔部５の外周部
５２および保持部５３を窒化処理により、一体構造のま
ま非磁性化することにより、漏洩磁束の抑制効果を高め
てもよい。以上は、回転子を積層鉄心を積層したものに
ついて説明したが、円筒形のソリッドの磁性体に機械加
工を施して回転子を形成してもよい。また、回転子の磁
極数は２極に限るものではなく、磁極部が複数の突極に
形成されたものであれば２極以上の回転子に適用でき
る。Embodiments of the present invention will be described with reference to the drawings.
FIG. 1A is a front view of a rotor 3 for two poles showing an embodiment of the present invention, in which a magnetic pole portion 2 extending in a radial direction is formed in a central portion of a disk-shaped thin steel plate, and a rotary shaft is provided at the center. Shaft hole 2 for inserting 4
1, a half-moon shaped porous portion 5 is provided on both sides of the magnetic pole portion 2 to form a laminated iron core, and a predetermined number of laminated iron cores are laminated to form a rotor 3
Are configured. A large number of small-diameter holes 51 extending in the axial direction are provided in the porous portion 5 to increase the magnetic resistance. Therefore, since the outer peripheral portion 52 of the porous portion 5 is formed of the same smooth cylindrical surface as the outer peripheral portion of the magnetic pole portion 2, even when rotating at a high speed, the air loss that occurs in the cutout portion does not occur. The leakage magnetic flux from the magnetic pole portion 2 can be suppressed by thinning the holding portion 53 between the holes of the porous portion 5 to the limit capable of withstanding the centrifugal force and increasing the magnetic resistance.
The shape of the hole 51 of the porous portion 5 may be an elongated hole toward the outer circumference of the rotor 3, as shown in FIG. In addition, as shown in FIG. 1C, the elongated holes 51 of the porous portion 5 are formed.
May be opened on the outer periphery of the rotor 3, and in this case, the filling portion 54 of the non-magnetic material such as synthetic resin is fixed to the hole 51 by adhesion so as not to jump out by centrifugal force, and thus the porous portion 5 is formed. The outer peripheral portion 52 may be smooth. Further, the effect of suppressing the leakage magnetic flux may be enhanced by nitriding the outer peripheral portion 52 and the holding portion 53 of the porous portion 5 so as to make the integral structure non-magnetic. In the above description, the rotor is formed by laminating laminated iron cores, but a cylindrical solid magnetic body may be machined to form the rotor. Further, the number of magnetic poles of the rotor is not limited to two, and it can be applied to a rotor having two or more poles as long as the magnetic pole portion is formed of a plurality of salient poles.
【０００７】[0007]
【考案の効果】以上述べたように、本考案によれば、回
転子の切欠き部分による空気の攪拌作用がなくなるの
で、空気による摩擦損や騒音を減らすことができ、モー
タの温度上昇を低く抑えることができると共に、モータ
の効率が高められ、電源容量も小さくて済むなどの効果
がある。As described above, according to the present invention, the agitating action of air due to the notch portion of the rotor is eliminated, so that friction loss and noise due to air can be reduced and the temperature rise of the motor can be reduced. In addition to being suppressed, the efficiency of the motor can be improved, and the power supply capacity can be small.
【図１】本考案の実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図２】従来例を示す正面図である。FIG. 2 is a front view showing a conventional example.
１ 固定子 ２ 磁極部 ３ 回転子 ４ 回転軸 ５ 多孔部 ５１ 穴 ５２ 外周部 ５３ 保持部 ５４ 充填部 DESCRIPTION OF SYMBOLS 1 Stator 2 Magnetic pole part 3 Rotor 4 Rotating shaft 5 Porous part 51 Hole 52 Outer peripheral part 53 Holding part 54 Filling part
Claims (3)
リラクタンスモータの回転子において、前記磁極部の側
面に軸方向に伸びる複数の穴を有する多孔部を形成し、
前記多孔部の外周面を前記磁極部の外周面と同一円筒面
上に形成したことを特徴とする高速リラクタンスモータ
の回転子。1. A rotor of a reluctance motor having a plurality of magnetic pole portions formed on salient poles, wherein a porous portion having a plurality of axially extending holes is formed on a side surface of the magnetic pole portion,
A rotor for a high-speed reluctance motor, wherein the outer peripheral surface of the porous portion is formed on the same cylindrical surface as the outer peripheral surface of the magnetic pole portion.
囲に形成された保持部を窒化処理により非磁性化した請
求項１記載の高速リラクタンスモータの回転子。2. The rotor for a high-speed reluctance motor according to claim 1, wherein the outer peripheral portion of the porous portion and the holding portion formed around the hole are made non-magnetic by nitriding treatment.
穴の中に非磁性材料からなる充填部を固定した請求項１
記載の高速リラクタンスモータの回転子。3. The hole of the porous portion is opened on the outer peripheral surface, and a filling portion made of a non-magnetic material is fixed in the hole.
Rotor of the described high speed reluctance motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4374691U JPH0747976Y2 (en) | 1991-05-14 | 1991-05-14 | High speed reluctance motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4374691U JPH0747976Y2 (en) | 1991-05-14 | 1991-05-14 | High speed reluctance motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04128074U JPH04128074U (en) | 1992-11-20 |
| JPH0747976Y2 true JPH0747976Y2 (en) | 1995-11-01 |
Family
ID=31924035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4374691U Expired - Lifetime JPH0747976Y2 (en) | 1991-05-14 | 1991-05-14 | High speed reluctance motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747976Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005019112A1 (en) | 2005-04-25 | 2006-10-26 | Siemens Ag | Combination motor consists of linear and rotation motor systems with at least one of them having hybrid reluctance motor and each having a permanent magnet-free armature with grooves in its axis and periphery |
-
1991
- 1991-05-14 JP JP4374691U patent/JPH0747976Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04128074U (en) | 1992-11-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |