JPH065351U - Permanent magnet rotor - Google Patents
Permanent magnet rotorInfo
- Publication number
- JPH065351U JPH065351U JP4417592U JP4417592U JPH065351U JP H065351 U JPH065351 U JP H065351U JP 4417592 U JP4417592 U JP 4417592U JP 4417592 U JP4417592 U JP 4417592U JP H065351 U JPH065351 U JP H065351U
- Authority
- JP
- Japan
- Prior art keywords
- rotor core
- magnetic metal
- fitted
- rotor
- end plate
- 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
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
(57)【要約】
【目的】 永久磁石回転子において、低コストで、かつ
モータ性能を改善することを目的とする。
【構成】 回転子鉄心1の外周に複数個の弓状磁石2を
有し、回転子鉄心1の両端に設けた非貫通穴1aに、平
板状非磁性金属端板3に設けた突起3aを圧入し、弓状
磁石2の外側に非磁性金属パイプ3を焼ばめまたは圧入
し、パイプ3の両端を内径側に折り曲げた構成としたた
め、クランプピンが不要となり、低コストとなる。ま
た、回転子鉄心1に貫通穴がないために磁路透磁率が良
化し、モータ性能が向上する。
(57) [Abstract] [Purpose] An object of the present invention is to improve motor performance at low cost in a permanent magnet rotor. [Structure] A plurality of arcuate magnets 2 are provided on the outer circumference of a rotor core 1, and projections 3a provided on a flat non-magnetic metal end plate 3 are provided in non-through holes 1a provided at both ends of the rotor core 1. Since the non-magnetic metal pipe 3 is press-fitted and the non-magnetic metal pipe 3 is shrink-fitted or press-fitted on the outer side of the arcuate magnet 2 and both ends of the pipe 3 are bent to the inner diameter side, the clamp pin becomes unnecessary and the cost is reduced. Further, since there is no through hole in the rotor core 1, the magnetic path permeability is improved and the motor performance is improved.
Description
【0001】[0001]
本考案は、内径に近い部分に磁路形成のための鉄心を持ち、その外周に永久磁 石を有する永久磁石回転子に関する。 The present invention relates to a permanent magnet rotor having an iron core for forming a magnetic path in a portion close to the inner diameter and a permanent magnet on the outer circumference thereof.
【0002】[0002]
始動巻線を持たない永久磁石回転子は鉄心部を内側にして、その外側に永久磁 石を配置し、磁石面積を大きくする構造が一般的である。この構造の回転子を能 率的に生産するために近年採用されている構成に特開平2−246748号公報 に示されたものがある。 A permanent magnet rotor that does not have a starting winding generally has a structure in which the iron core is placed inside and the permanent magnet is placed outside to increase the magnet area. Japanese Patent Application Laid-Open No. 2-246748 discloses a configuration which has been adopted in recent years to efficiently produce a rotor having this structure.
【0003】 以下、その構成について図3および図4を参照しながら説明する。 図に示すように、回転子鉄心6に貫通穴7を設け、平板状非磁性金属端板8を 回転子鉄心6の両端に配置し、回転子鉄心6と平板状非磁性金属端板8とをクラ ンプピン9により一体にクランプしている。その後、回転子鉄心6の外周に複数 個の弓状磁石10を配置し、弓状磁石10の外周に非磁性金属パイプ11を焼ば めまたは圧入により嵌合させた後、非磁性金属パイプ11の両端または一方を内 径方向に折り曲げたものである。The configuration will be described below with reference to FIGS. 3 and 4. As shown in the figure, the through hole 7 is provided in the rotor core 6, and the flat non-magnetic metal end plates 8 are arranged at both ends of the rotor core 6, and the rotor core 6 and the flat non-magnetic metal end plates 8 are Are clamped together by clamp pin 9. After that, a plurality of arcuate magnets 10 are arranged on the outer circumference of the rotor core 6, the nonmagnetic metal pipe 11 is fitted on the outer circumference of the arcuate magnet 10 by shrinking or press fitting, and then the nonmagnetic metal pipe 11 is inserted. Both ends or one of them is bent in the inner diameter direction.
【0004】[0004]
しかし、前記従来例において以下のような課題があった。 However, the conventional example has the following problems.
【0005】 (1)モータ性能上の課題 回転子鉄心6に貫通穴7が設けられているため、図4に示すように磁極の中央 付近において回転子鉄心6内の磁束の流れをさまたげることになり、磁路透磁率 を悪化させモータ効率を悪化させる。特に近年は、高効率化のため、希土類磁石 等の残留磁束密度の高い材料が使用されるようになってきており、貫通穴7の影 響はさらに大きくなってくる。(1) Problems in Motor Performance Since the rotor core 6 is provided with the through holes 7, it is necessary to block the flow of magnetic flux in the rotor core 6 near the center of the magnetic poles as shown in FIG. Therefore, the magnetic path permeability is deteriorated and the motor efficiency is deteriorated. Particularly in recent years, materials having a high residual magnetic flux density such as rare earth magnets have been used for higher efficiency, and the effect of the through holes 7 is further increased.
【0006】 (2)コスト上の課題 図3に示す構造の回転子を能率的に組立てるためには、回転子鉄心6に平板状 非磁性金属端板8をクランプピン9により一体にクランプし、その後、回転子鉄 心6の外周に複数個の弓状磁石10を配置し、非磁性金属パイプ11を嵌合させ た後、非磁性金属パイプ11の両端または一方を内径方向に折り曲げるという手 順で行われる。平板状非磁性金属端板8の回転子鉄心6への固定を、非磁性金属 パイプ11の嵌合の後にした場合、回転子鉄心6の積厚よりも長い弓状磁石10 が装着された場合に、平板状非磁性金属端板8が回転子鉄心6に完全に装着でき ないという不具合が生じる。その不具合を解消するために、回転子鉄心6の積厚 および弓状磁石10の軸方向の長さの精度を上げれば良いが、コストアップにつ ながる。したがって、前述のように先に回転子鉄心6に平板状非磁性金属端板8 を固定した方が後の組立工程での不具合は少なくてすむ。しかしながら、従来例 では回転子鉄心6と平板状非磁性金属端板8の固定をクランプピン9によって行 っているため、クランプピン9の材料費がかかる。また、自動化を進める上でも 設備費が高くなる。(2) Problems in Cost In order to efficiently assemble the rotor having the structure shown in FIG. 3, the flat nonmagnetic metal end plate 8 is integrally clamped to the rotor core 6 by the clamp pin 9, After that, a plurality of arcuate magnets 10 are arranged on the outer circumference of the rotor core 6, the nonmagnetic metal pipes 11 are fitted, and then both ends or one of the nonmagnetic metal pipes 11 is bent in the inner diameter direction. Done in. When the plate-like non-magnetic metal end plate 8 is fixed to the rotor core 6 after the non-magnetic metal pipe 11 is fitted, and when the arcuate magnet 10 longer than the laminated thickness of the rotor core 6 is mounted. In addition, there is a problem that the flat non-magnetic metal end plate 8 cannot be completely attached to the rotor core 6. In order to solve the problem, the accuracy of the laminated thickness of the rotor core 6 and the axial length of the arcuate magnet 10 may be increased, but this leads to an increase in cost. Therefore, as described above, fixing the plate-shaped non-magnetic metal end plate 8 to the rotor core 6 first can reduce the problems in the subsequent assembling process. However, in the conventional example, the rotor core 6 and the plate-shaped non-magnetic metal end plate 8 are fixed by the clamp pin 9, so that the material cost of the clamp pin 9 is high. In addition, equipment costs will be high in order to promote automation.
【0007】 本考案は上記課題を解決するもので、低コストで、かつモータ性能を改善する ことを目的としている。The present invention solves the above-mentioned problems, and aims at improving the motor performance at low cost.
【0008】[0008]
上記目的を達成するために本考案は、鉄板をかしめて円筒状に積層した回転子 鉄心の外周に複数個の弓状磁石を有し、回転子鉄心の積厚方向の両端面に平板状 非磁性金属端板を設け、弓状磁石の外側に非磁性金属パイプを焼ばめまたは圧入 し、非磁性金属パイプの両端を内径方向に折り曲げたものであって、回転子鉄心 の両端面に複数個の非貫通穴を設け、平板状非磁性金属端板に回転子鉄心に設け た非貫通穴と対応する位置に同数の突起を設け、回転子鉄心の複数個の非貫通穴 に前記突起を圧入させたものである。 In order to achieve the above-mentioned object, the present invention has a plurality of arcuate magnets on the outer circumference of a rotor core that is obtained by caulking iron plates and is laminated in a cylindrical shape. A magnetic metal end plate is provided, a non-magnetic metal pipe is shrink-fitted or press-fitted on the outside of the arcuate magnet, and both ends of the non-magnetic metal pipe are bent inward. The non-through holes are provided in the plate-shaped non-magnetic metal end plate, and the same number of protrusions are provided at the positions corresponding to the non-through holes provided in the rotor core. It was pressed in.
【0009】[0009]
本考案は上記した構成において、回転子鉄心と平板状非磁性金属端板との固定 は、回転子鉄心の両端に設けた非貫通穴に平板状非磁性金属端板に設けた突起を 圧入しているため、クランプピンが不要となる。また、回転子鉄心の非貫通穴の 深さは通常2〜3mmだけでよいため、回転子鉄心内の磁路透磁率を悪化させるこ となく、良好なモータ性能を維持することができる。 According to the present invention, in the structure described above, the rotor core and the plate-shaped nonmagnetic metal end plates are fixed by pressing the projections provided on the plate-shaped nonmagnetic metal end plates into the non-through holes provided at both ends of the rotor core. Therefore, the clamp pin becomes unnecessary. Further, since the depth of the non-through holes of the rotor core is usually only 2 to 3 mm, good magnetic performance can be maintained without deteriorating the magnetic path permeability in the rotor core.
【0010】[0010]
(実施例1) 以下、本考案の第1の実施例の永久磁石回転子について図1を参照しながら説 明する。 (Embodiment 1) Hereinafter, a permanent magnet rotor according to a first embodiment of the present invention will be described with reference to FIG.
【0011】 図に示すように、鉄板をかしめて積層した円筒状の回転子鉄心1の外周に複数 個の弓状磁石2を有し、回転子鉄心1の積厚方向の両端面に平板状非磁性金属端 板3を設ける。前記回転子鉄心1の両端面には複数個の非貫通穴1a(通常深さ 2〜3mm)を設け、また、平板状非磁性金属端板3には回転子鉄心1に設けた非 貫通穴1aと対応した位置にバーリング加工により同数の突起3aを設けている 。そして回転子鉄心1の両端の非貫通穴1aに平板状非磁性金属端板3の突起3 aを圧入して、回転子鉄心1と平板状非磁性金属端板3とを固定している。その 後、弓状磁石2の外側に非磁性金属パイプ4を焼ばめまたは圧入し、非磁性金属 パイプ4の両端を内径方向に折り曲げている。As shown in the figure, a plurality of arcuate magnets 2 are provided on the outer circumference of a cylindrical rotor core 1 obtained by caulking iron plates, and a flat plate shape is formed on both end faces of the rotor core 1 in the stacking thickness direction. A non-magnetic metal end plate 3 is provided. A plurality of non-penetrating holes 1a (usually a depth of 2 to 3 mm) are provided on both end faces of the rotor core 1, and the flat non-magnetic metal end plate 3 is a non-penetrating hole provided on the rotor core 1. The same number of protrusions 3a are provided by burring at positions corresponding to 1a. Then, the projections 3a of the flat non-magnetic metal end plate 3 are press-fitted into the non-through holes 1a at both ends of the rotor core 1 to fix the rotor core 1 and the flat non-magnetic metal end plate 3 to each other. After that, the non-magnetic metal pipe 4 is shrink-fitted or press-fitted to the outside of the arcuate magnet 2, and both ends of the non-magnetic metal pipe 4 are bent in the inner diameter direction.
【0012】 上記構成において、回転子鉄心1と平板状非磁性金属端板3との固定は、回転 子鉄心1の両端に設けた非貫通穴1aに平板状非磁性金属端板3に設けた突起3 aを圧入しているため、クランプピンが不要となる。また、回転子鉄心1と平板 状非磁性金属端板3とのクランプ力を補うために非磁性金属パイプ4の両端を内 径側に折り曲げており、従来例と比べて信頼性は変わるものではない。回転子鉄 心1の非貫通穴1aの深さは通常2〜3mmだけで良いため、従来例のように回転 子鉄心1内の磁路透磁率を悪化させることがない。In the above structure, the rotor core 1 and the flat plate-shaped nonmagnetic metal end plate 3 are fixed to the flat plate-shaped nonmagnetic metal end plate 3 in the non-through holes 1 a provided at both ends of the rotor core 1. Since the protrusion 3a is press-fitted, the clamp pin becomes unnecessary. Further, both ends of the non-magnetic metal pipe 4 are bent to the inner diameter side in order to supplement the clamping force between the rotor core 1 and the flat non-magnetic metal end plate 3, and the reliability is not different from the conventional example. Absent. Since the depth of the non-through hole 1a of the rotor core 1 is usually only 2 to 3 mm, the magnetic path permeability in the rotor core 1 is not deteriorated unlike the conventional example.
【0013】 (実施例2) 次に、本考案の第2の実施例について図2を参照しながら説明する。図に示す ように、平板状非磁性金属端板5の突起5aを半抜き加工により設けたものであ り、その効果は、第1の実施例のものと同様であることはいうまでもない。Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG. As shown in the figure, the protrusion 5a of the flat non-magnetic metal end plate 5 is provided by half blanking, and the effect is of course the same as that of the first embodiment. .
【0014】[0014]
以上の実施例の説明から明らかなように本考案は、従来例に比べて以下の効果 が得られる。 As is apparent from the above description of the embodiment, the present invention has the following effects as compared with the conventional example.
【0015】 (1)回転子鉄心と平板状非磁性金属端板との固定は、回転子鉄心に設けた非 貫通穴に平板状非磁性金属端板に設けた突起を圧入しているため、クランプピン が不要となり、材料費が低減できる。また、クランプピンが無いために組立の自 動化が容易であり、設備費用も少なくてすむ。(1) Since the rotor core and the flat plate-shaped nonmagnetic metal end plate are fixed, the protrusions provided on the flat plate-shaped nonmagnetic metal end plate are press-fitted into the non-through holes provided in the rotor core. Material cost can be reduced because clamp pins are not required. Also, since there are no clamp pins, assembly can be automated easily, and equipment costs are low.
【0016】 (2)回転子鉄心と平板状非磁性金属端板とのクランプ力を補うために、非磁 性金属パイプの両端を内径側に折り曲げているため、従来例と比べて信頼性は変 わるものではない。(2) Since both ends of the non-magnetic metal pipe are bent to the inner diameter side in order to supplement the clamping force between the rotor core and the flat non-magnetic metal end plate, the reliability is higher than that of the conventional example. It doesn't change.
【0017】 (3)回転子鉄心の非貫通穴の深さは通常2〜3mmだけで良いため、回転子鉄 心内の磁路透磁率を悪化させることがなく、モータ効率の向上となる。特に希土 類等の残留磁束密度の高い材料を使用する場合は、その効果は大きなものとなる 。(3) Since the depth of the non-through hole of the rotor core is usually only 2 to 3 mm, the magnetic path permeability in the rotor core is not deteriorated and the motor efficiency is improved. Especially, when a material having a high residual magnetic flux density such as rare earth is used, the effect becomes great.
【0018】 以上の通り本考案による永久磁石回転子は、低コストで高性能なモータを提供 することが可能であり、多大な効果が得られる。As described above, the permanent magnet rotor according to the present invention can provide a high-performance motor at a low cost, and a great effect can be obtained.
【図1】本考案の第1の実施例の永久磁石回転子の縦断
面図FIG. 1 is a vertical sectional view of a permanent magnet rotor according to a first embodiment of the present invention.
【図2】本考案の第2の実施例の永久磁石回転子の縦断
面図FIG. 2 is a vertical sectional view of a permanent magnet rotor according to a second embodiment of the present invention.
【図3】従来の永久磁石回転子の縦断面図FIG. 3 is a vertical sectional view of a conventional permanent magnet rotor.
【図4】同、永久磁石回転子の平面図FIG. 4 is a plan view of a permanent magnet rotor of the same.
1 回転子鉄心 1a 非貫通穴 2 弓状磁石 3 平板状非磁性金属端板 3a 突起 4 非磁性金属パイプ 1 rotor core 1a non-through hole 2 arcuate magnet 3 flat plate non-magnetic metal end plate 3a protrusion 4 non-magnetic metal pipe
Claims (1)
心の外周に複数個の弓状の磁石を有し、前記回転子鉄心
の積厚方向の両端面に平板状非磁性金属端板を設け、前
記弓状の磁石の外側に非磁性金属パイプを焼ばめまたは
圧入し、前記非磁性金属パイプの両端を内径方向に折り
曲げたものであって、前記回転子鉄心の両端面に複数個
の非貫通穴を設け、前記平板状非磁性金属端板に前記回
転子鉄心に設けた非貫通穴と対応する位置に同数の突起
を設け、前記回転子鉄心の複数個の非貫通穴に前記突起
を圧入した永久磁石回転子。1. A cylindrical non-magnetic metal end plate having a plurality of arcuate magnets on the outer periphery of a cylindrical rotor core obtained by caulking iron plates, and having both end faces in the stacking thickness direction of the rotor core. A non-magnetic metal pipe is shrink-fitted or press-fitted on the outside of the arcuate magnet, both ends of the non-magnetic metal pipe are bent in the inner diameter direction, and a plurality of end faces of the rotor core are provided. Providing the same number of projections at positions corresponding to the non-through holes provided in the rotor iron core on the flat plate-shaped non-magnetic metal end plate, the plurality of non-through holes of the rotor iron core are provided. A permanent magnet rotor having the protrusions press-fitted therein.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4417592U JP2568595Y2 (en) | 1992-06-25 | 1992-06-25 | Permanent magnet rotor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4417592U JP2568595Y2 (en) | 1992-06-25 | 1992-06-25 | Permanent magnet rotor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH065351U true JPH065351U (en) | 1994-01-21 |
JP2568595Y2 JP2568595Y2 (en) | 1998-04-15 |
Family
ID=12684248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4417592U Expired - Fee Related JP2568595Y2 (en) | 1992-06-25 | 1992-06-25 | Permanent magnet rotor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2568595Y2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5168434U (en) * | 1974-11-26 | 1976-05-31 | ||
JP2009219297A (en) * | 2008-03-12 | 2009-09-24 | Nippon Densan Corp | Motor, and method of manufacturing for rotor part formed in motor |
WO2019025150A1 (en) * | 2017-08-02 | 2019-02-07 | Valeo Equipements Electriques Moteur | Rotor for a rotating electrical machine with an improved flange mounting system |
-
1992
- 1992-06-25 JP JP4417592U patent/JP2568595Y2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5168434U (en) * | 1974-11-26 | 1976-05-31 | ||
JP2009219297A (en) * | 2008-03-12 | 2009-09-24 | Nippon Densan Corp | Motor, and method of manufacturing for rotor part formed in motor |
WO2019025150A1 (en) * | 2017-08-02 | 2019-02-07 | Valeo Equipements Electriques Moteur | Rotor for a rotating electrical machine with an improved flange mounting system |
Also Published As
Publication number | Publication date |
---|---|
JP2568595Y2 (en) | 1998-04-15 |
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LAPS | Cancellation because of no payment of annual fees |