JP2001045685A - Magnet motor - Google Patents
Magnet motorInfo
- Publication number
- JP2001045685A JP2001045685A JP11218593A JP21859399A JP2001045685A JP 2001045685 A JP2001045685 A JP 2001045685A JP 11218593 A JP11218593 A JP 11218593A JP 21859399 A JP21859399 A JP 21859399A JP 2001045685 A JP2001045685 A JP 2001045685A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- iron core
- rotor
- positioning
- magnet
- 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.)
- Withdrawn
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000010030 laminating Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000000696 magnetic material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract 1
- 230000005415 magnetization Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、永久磁石をもつロ
ータとステータとを有する磁石モータに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnet motor having a rotor having permanent magnets and a stator.
【０００２】[0002]
【従来の技術】従来の磁石モータの例として、密閉形圧
縮機に使用されている磁石モータを図３に示してある。
図３に示す磁石モータは、ステータ１とロータ２とを有
している。ステータ１は薄肉の磁性鋼板を多数積層して
なる円筒状コア３を有し、その円筒状コア３には、その
周方向に所定の間隔を隔てて複数のスロット４が設けら
れ、その複数のスロット４を通して多数の電線５が巻き
付けられて構成されている。2. Description of the Related Art FIG. 3 shows a magnet motor used in a hermetic compressor as an example of a conventional magnet motor.
The magnet motor shown in FIG. 3 has a stator 1 and a rotor 2. The stator 1 has a cylindrical core 3 formed by laminating a large number of thin magnetic steel plates. The cylindrical core 3 is provided with a plurality of slots 4 at a predetermined interval in a circumferential direction thereof. A large number of electric wires 5 are wound around the slots 4.
【０００３】ロータ２は、外周に非磁性体の円筒環６が
設けられ、その内側に周方向に所定の間隔を隔てて複数
（本図では４個）の永久磁石７ａ，７ｂ，７ｃ，７ｄ
が、その磁極が周方向に向かうよう配置され、その永久
磁石７ａ，７ｂ，７ｃ，７ｄの内周側には薄肉の磁性鋼
板を多数積層してなる鉄心９が設けられ、該鉄心９には
前記永久磁石７ａ，７ｂ，７ｃ，７ｄの位置決めのため
の突起９ａを設けている。また、該鉄心９の中心には、
固定軸８が貫通固定されている。The rotor 2 is provided with a non-magnetic cylindrical ring 6 on its outer periphery, and a plurality of (four in the present figure) permanent magnets 7a, 7b, 7c, 7d at a predetermined interval in the circumferential direction inside thereof.
The permanent magnets 7a, 7b, 7c, 7d are provided with an iron core 9 formed by laminating a large number of thin magnetic steel plates on the inner peripheral side thereof. A projection 9a for positioning the permanent magnets 7a, 7b, 7c, 7d is provided. In the center of the iron core 9,
A fixed shaft 8 is fixed through.
【０００４】[0004]
【発明が解決しようとする課題】以上のように構成され
た図３の磁石モータにおいては、永久磁石７ａ，７ｂ，
７ｃ，７ｄに着磁を行う時、永久磁石の円周配列方向の
分割境界面を着磁装置に対して正確に設置させないと、
永久磁石の磁界方向にズレが発生して永久磁石の着磁率
が低下し、製品の歩留まりが悪化する問題があった。In the magnet motor of FIG. 3 configured as described above, the permanent magnets 7a, 7b,
When magnetizing the magnets 7c and 7d, it is necessary to accurately set the dividing boundary surface of the permanent magnet in the circumferential arrangement direction with respect to the magnetizing device.
There has been a problem in that a shift occurs in the direction of the magnetic field of the permanent magnet, the magnetization rate of the permanent magnet decreases, and the yield of the product deteriorates.
【０００５】本発明は、永久磁石をもつロータとステー
タとを有する磁石モータにおいて、前記永久磁石の磁界
方向にずれが発生して同永久磁石の着磁率が低下するの
を防止するように構成した磁石モータを提供することを
課題としている。According to the present invention, in a magnet motor having a rotor having a permanent magnet and a stator, the magnet is prevented from being deviated in the direction of the magnetic field of the permanent magnet to lower the magnetization rate of the permanent magnet. It is an object to provide a magnet motor.
【０００６】[0006]
【課題を解決するための手段】前記課題を解決するた
め、本発明は、ロータが外周の非磁性体の円筒環と、同
円筒環の内側に配置された周方向に連続した永久磁石
と、同永久磁石の内側に配置され薄肉の磁性鋼板を積層
してなる鉄心とを有し、前記永久磁石の内筒面には少な
くとも１個の鉄心位置決め用の係合部を有するととも
に、前記鉄心の外周面には前記鉄心位置決め用の係合部
に対応する永久磁石位置決め用の係合部を有し、前記円
筒環と永久磁石と鉄心とは互いに嵌挿して固着されてお
り、かつ、前記ロータは外周から中心に向かって磁力線
が流れるように着磁されている磁石モータを提供する。In order to solve the above-mentioned problems, the present invention provides a cylindrical ring of a non-magnetic material having an outer periphery, a permanent magnet which is arranged inside the cylindrical ring, and is continuous in a circumferential direction. An iron core formed by laminating thin magnetic steel sheets disposed inside the permanent magnet, and having at least one engagement portion for positioning the iron core on the inner cylindrical surface of the permanent magnet; The outer peripheral surface has a permanent magnet positioning engaging portion corresponding to the iron core positioning engaging portion, the cylindrical ring, the permanent magnet and the iron core are fitted and fixed to each other, and the rotor Provides a magnet motor that is magnetized so that lines of magnetic force flow from the outer periphery toward the center.
【０００７】本発明の磁石モータにおいて、円筒環の内
側に配置される周方向に連続した永久磁石を形成するに
は、１つの円筒状又は複数の円筒盤状のものを積層して
形成することができる。また、本発明の磁石モータにお
ける前記係合部としては、その係合部の一方が凹部であ
り、他方が凸部として構成することができる。In the magnet motor of the present invention, in order to form a circumferentially continuous permanent magnet disposed inside the cylindrical ring, one permanent magnet or a plurality of cylindrical discs are laminated. Can be. Further, as the engaging portion in the magnet motor of the present invention, one of the engaging portions is a concave portion and the other is a convex portion.
【０００８】以上のように構成された本発明の磁石モー
タでは、永久磁石が周方向に連続していて、外周面には
分割境界面が無く、１つの磁石として着磁されているた
め、円周上では着磁方向に制限がなくなって製品の歩留
りが向上される。[0008] In the magnet motor of the present invention configured as described above, the permanent magnet is continuous in the circumferential direction, the outer peripheral surface has no divided boundary surface, and is magnetized as one magnet. On the circumference, there is no restriction on the magnetization direction, and the product yield is improved.
【０００９】[0009]
【発明の実施の形態】以下、本発明による磁石モータを
図１、図２に示した実施の一態様に基づいて具体的に説
明する。図１及び図２に示す磁石モータは、ステータ１
０１とロータ１０２を有している。ロータ１０２の外周
には非磁性体の円筒環１０６が設けられており、その内
側に一つの円筒状永久磁石又は複数の円筒盤状を積層し
た永久磁石１０７が設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a magnet motor according to the present invention will be described in detail with reference to one embodiment shown in FIGS. The magnet motor shown in FIGS.
01 and the rotor 102. A non-magnetic cylindrical ring 106 is provided on the outer periphery of the rotor 102, and a single cylindrical permanent magnet or a permanent magnet 107 having a plurality of cylindrical discs laminated is provided inside the cylindrical ring 106.
【００１０】永久磁石１０７の内筒面には薄肉の磁性鋼
板を多数積層して構成した鉄心１０９に対する位置決め
用の凹部１０７ａを１個所又は複数箇所（図では４個）
設け、又、鉄心１０９には永久磁石１０７の位置決め用
の凹部１０７ａに対応する永久磁石位置決め用の凸部１
０９ａを設け、前記円筒環１０６と永久磁石１０７と鉄
心１０９とを嵌挿し固着している。また、該鉄心１０９
の中心には、固定軸１０８が貫通固定されている。永久
磁石１０７には図２の如く、外周から中心に向かって磁
力線が流れるように着磁している。In the inner cylindrical surface of the permanent magnet 107, one or more (four in the figure) positioning recesses 107a for positioning with respect to the iron core 109 formed by laminating many thin magnetic steel plates.
Also, a protrusion 1 for positioning the permanent magnet corresponding to the recess 107a for positioning the permanent magnet 107 is provided on the iron core 109.
09a, the cylindrical ring 106, the permanent magnet 107, and the iron core 109 are fitted and fixed. In addition, the iron core 109
, A fixed shaft 108 is fixed through therethrough. As shown in FIG. 2, the permanent magnet 107 is magnetized such that lines of magnetic force flow from the outer periphery toward the center.
【００１１】以上説明したように、図１、図２に示され
た磁石モータにおいては、永久磁石１０７を一つの円筒
状又は複数の円筒盤状を積層して形成し、磁力線を外周
から中心に流れるよう着磁することにより、外周面には
分割境界面が無く、一つの永久磁石として着磁するため
着磁装置に設定するとき、着磁方向に円周上では制限が
無くなるため製品の歩留まりが良化する。As described above, in the magnet motor shown in FIGS. 1 and 2, the permanent magnet 107 is formed by laminating one cylindrical shape or a plurality of cylindrical disks, and the lines of magnetic force are arranged from the outer periphery to the center. By magnetizing so that it flows, there is no dividing boundary surface on the outer peripheral surface, and it is magnetized as one permanent magnet, so when setting in a magnetizing device, there is no limit on the circumference in the magnetizing direction, so product yield Is improved.
【００１２】以上、本発明を図示した実施形態に基づい
て具体的に説明したが、本発明がこれらの実施形態に限
定されず特許請求の範囲に示す本発明の範囲内で、その
具体的構造、構成に種々の変更を加えてよいことはいう
までもない。As described above, the present invention has been specifically described based on the illustrated embodiments. However, the present invention is not limited to these embodiments, and specific structures within the scope of the present invention shown in the claims are set forth. Needless to say, various changes may be made to the configuration.
【００１３】例えば、上記実施形態では、永久磁石１０
７の内筒面には４個の鉄心位置決め用の凹部１０７ａを
形成し、また、鉄心１０９の外周面には前記凹部１０７
ａに対応する４個の凸部１０９ａを形成しているが、こ
れら凹凸部の数は４個に限定されず何個でもよいし、ま
た、凹凸部を永久磁石１０７と鉄心１０９に逆に形成し
てもよい。For example, in the above embodiment, the permanent magnet 10
7, four recesses 107a for positioning the iron core are formed on the inner cylindrical surface.
are formed, but the number of these uneven portions is not limited to four and may be any number. Also, the uneven portions are formed on the permanent magnet 107 and the iron core 109 in reverse. May be.
【００１４】また、永久磁石１０７と鉄心１０９に設け
る凹部１０７ａと１０９ａは図示した凹凸形状以外、永
久磁石と鉄心との間に係合を与え互いに位置決め可能な
係合部を構成するものであれば、種々のものを適宜採用
してよい。The recesses 107a and 109a provided in the permanent magnet 107 and the iron core 109 are not limited to the concavo-convex shape shown, provided that they are engaged with the permanent magnet and the iron core to form an engaging portion that can be positioned with respect to each other. , May be appropriately adopted.
【００１５】[0015]
【発明の効果】以上説明したように、本発明による磁石
モータは、ロータが外周の非磁性体の円筒環と、同円筒
環の内側に配置された周方向に連続した永久磁石と、同
永久磁石の内側に配置され薄肉の磁性鋼板を積層してな
る鉄心とを有し、前記永久磁石の内筒面には少なくとも
１個の鉄心位置決め用の係合部を有するとともに、前記
鉄心の外周面には前記鉄心位置決め用の係合部に対応す
る永久磁石位置決め用の係合部を有し、前記円筒環と永
久磁石と鉄心とは互いに嵌挿して固着されており、か
つ、前記ロータは外周から中心に向かって磁力線が流れ
るように着磁して構成されている。As described above, according to the magnet motor of the present invention, the rotor is composed of a non-magnetic cylindrical ring on the outer periphery, a circumferentially continuous permanent magnet disposed inside the cylindrical ring, and a permanent magnet. And a core formed by laminating thin magnetic steel sheets disposed inside the magnet, and at least one engaging portion for positioning the core on the inner cylindrical surface of the permanent magnet, and an outer peripheral surface of the core. Has an engaging portion for positioning the permanent magnet corresponding to the engaging portion for positioning the iron core, the cylindrical ring, the permanent magnet and the iron core are fitted and fixed to each other, and the rotor From the center to the center.
【００１６】このように、本発明による磁石モータにお
ける永久磁石は周方向に連続していて外周面での分割境
界面が無く、１つの磁石として着磁される。従って、本
発明の磁石モータでは円周上での着磁方向に制限が無く
なって製品の歩留りが向上される。As described above, the permanent magnet in the magnet motor according to the present invention is continuous in the circumferential direction, has no dividing boundary on the outer peripheral surface, and is magnetized as one magnet. Therefore, in the magnet motor of the present invention, there is no restriction on the direction of magnetization on the circumference, and the product yield is improved.
【図１】本発明の実施の一形態に係る磁石モータを示す
断面図で、（Ａ）は（Ｂ）のＡ−Ａ線に沿う縦断面図、
（Ｂ）は（Ａ）のＢ−Ｂ線に沿う横断面図。FIG. 1 is a sectional view showing a magnet motor according to an embodiment of the present invention, in which (A) is a longitudinal sectional view along line AA of (B),
(B) is a cross-sectional view along the line BB of (A).
【図２】図１に示す磁石モータの永久磁石における磁化
方向を示す図面。FIG. 2 is a drawing showing a magnetization direction in a permanent magnet of the magnet motor shown in FIG.
【図３】従来の密閉形圧縮機の磁石モータを示す断面図
で、（Ａ）は（Ｂ）図のＣ−Ｃ線に沿う縦断面図、
（Ｂ）は（Ａ）図のＤ−Ｄ線に沿う横断面図。FIG. 3 is a cross-sectional view showing a magnet motor of a conventional hermetic compressor, where (A) is a longitudinal cross-sectional view taken along line CC of (B),
(B) is a cross-sectional view along the line DD in (A).
１０１ ステータ １０２ ロータ １０６ 円筒環 １０７ 永久磁石 １０７ａ 鉄心位置決め用の凹部 １０８ 固定軸 １０９ 鉄心 １０９ａ 永久磁石位置決め用の凸部 DESCRIPTION OF SYMBOLS 101 Stator 102 Rotor 106 Cylindrical ring 107 Permanent magnet 107a Depression for iron core positioning 108 Fixed shaft 109 Iron core 109a Protrusion for permanent magnet positioning
Claims (2)
する磁石モータにおいて、前記ロータが外周の非磁性体
の円筒環と、同円筒環の内側に配置された周方向に連続
した永久磁石と、同永久磁石の内側に配置され薄肉の磁
性鋼板を積層してなる鉄心とを有し、前記永久磁石の内
筒面には少なくとも１個の鉄心位置決め用の係合部を有
するとともに、前記鉄心の外周面には前記鉄心位置決め
用の係合部に対応する永久磁石位置決め用の係合部を有
し、前記円筒環と永久磁石と鉄心とは互いに嵌挿して固
着されており、かつ、前記ロータは外周から中心に向か
って磁力線が流れるように着磁されていることを特徴と
する磁石モータ。1. A magnet motor having a rotor having a permanent magnet and a stator, wherein the rotor has a cylindrical ring of a non-magnetic material on the outer periphery, and a permanent magnet continuous in a circumferential direction disposed inside the cylindrical ring. An iron core formed by laminating thin magnetic steel sheets disposed inside the permanent magnet, and having at least one engagement portion for positioning the iron core on the inner cylindrical surface of the permanent magnet; The outer peripheral surface has a permanent magnet positioning engaging portion corresponding to the iron core positioning engaging portion, the cylindrical ring, the permanent magnet and the iron core are fitted and fixed to each other, and the rotor Is a magnet motor characterized in that it is magnetized so that lines of magnetic force flow from the outer periphery toward the center.
合部の他方が凸部であることを特徴とする請求項１記載
の磁石モータ。2. The magnet motor according to claim 1, wherein one of the engaging portions is a concave portion, and the other of the engaging portions is a convex portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11218593A JP2001045685A (en) | 1999-08-02 | 1999-08-02 | Magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11218593A JP2001045685A (en) | 1999-08-02 | 1999-08-02 | Magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001045685A true JP2001045685A (en) | 2001-02-16 |
Family
ID=16722398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11218593A Withdrawn JP2001045685A (en) | 1999-08-02 | 1999-08-02 | Magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001045685A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150048707A1 (en) * | 2007-06-28 | 2015-02-19 | Hitachi Metals, Ltd. | Radially anisotropic ring r-tm-b magnet, its production method, die for producing it, and rotor for brushless motor |
| US20150340917A1 (en) * | 2013-04-15 | 2015-11-26 | Mitsubishi Electric Corporation | Rotor of rotary machine |
-
1999
- 1999-08-02 JP JP11218593A patent/JP2001045685A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150048707A1 (en) * | 2007-06-28 | 2015-02-19 | Hitachi Metals, Ltd. | Radially anisotropic ring r-tm-b magnet, its production method, die for producing it, and rotor for brushless motor |
| US20150340917A1 (en) * | 2013-04-15 | 2015-11-26 | Mitsubishi Electric Corporation | Rotor of rotary machine |
| US10396611B2 (en) * | 2013-04-15 | 2019-08-27 | Mitsubishi Electric Corporation | Rotor of rotary machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20061003 |