JP3570181B2 - Rotor - Google Patents
Rotor Download PDFInfo
- Publication number
- JP3570181B2 JP3570181B2 JP32092397A JP32092397A JP3570181B2 JP 3570181 B2 JP3570181 B2 JP 3570181B2 JP 32092397 A JP32092397 A JP 32092397A JP 32092397 A JP32092397 A JP 32092397A JP 3570181 B2 JP3570181 B2 JP 3570181B2
- Authority
- JP
- Japan
- Prior art keywords
- key
- laminated core
- laminated
- key groove
- 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 - Fee Related
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Images
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- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
【0001】
【発明の属する技術分野】
本発明はキーにより回転軸と積層鉄心とを締結する回転子の、特にアンバランスの改善に関するものである。
【0002】
【従来の技術】
回転軸の出力軸とロータマグネットの外径寸法の差が大きい回転子では、回転軸とロータマグネットの間にロータマグネットのヨークとして作用する積層鉄心を設けることがあり、この回転軸と積層鉄心の固定方法には、一般的に圧入,焼きばめ,接着などの方法が用いられる。
【0003】
しかし上記の方法では保持トルクが得られない場合、回転軸と積層鉄心の間にキーが設けられる。
【0004】
図4において、41はキー溝部を備えた回転軸、42はマグネット、43はキー、44はキー溝部を1ヵ所備えた積層鉄心で、回転軸41と積層鉄心44のキー溝部にキー43が装着して、保持トルクを確保している。
【0005】
このとき、キー43とキー溝部の長さの違いにより発生する積層鉄心のキー溝部の空間部45は、回転子が回転するとアンバランスモーメントを生じるため、バランスパテを取り付けたり、積層鉄心の一部を切削で取り除いたりして調整していた。
【0006】
【発明が解決しようとする課題】
しかしながら従来の構成では、バランスパテの取り付けや積層鉄心の切削によるバランス調整では回転子の生産性を悪化させ、特に、大型回転子のように積層鉄心の積厚が大きくキー溝部の空間部が大きくなる場合は、バランスパテや積層鉄心の切削だけではバランス調整が不能となったり、必要以上に長いキーを用いなければならないという課題を有していた。
【0007】
本発明は、上記の課題を解決するもので、キーを用いた回転子において、バランス調整が不要な回転子を提供することを目的とする。
【0008】
【課題を解決するための手段】
上記課題を解決するために本発明の回転子は、キーと、キー溝部を備えた回転軸と、中央に1つのキー溝部を備えて積層した第一の積層鉄心と、前記第一の積層鉄心と同形状のキー溝部を反対側にも備えて積層した第二の積層鉄心とを具備し、前記キーと回転軸のキー溝部および第一の積層鉄心の軸方向長をほぼ同じ寸法にして、前記第一の積層鉄心のキー溝部に前記第二の積層鉄心の一方のキー溝部を合わせて積層し、前記キーにより前記回転軸と第一の積層鉄心とを締結固定したものである。
【0009】
【発明の実施の形態】
上記課題を解決するために本発明は、キーと、キー溝部を備えた回転軸と、中央に1つのキー溝部を備えて積層した第一の積層鉄心と、前記第一の積層鉄心と同形状のキー溝部を反対側にも備えて積層した第二の積層鉄心とを具備し、前記キーと回転軸のキー溝部および第一の積層鉄心の軸方向長をほぼ同じ寸法にして、前記第一の積層鉄心のキー溝部に前記第二の積層鉄心の一方のキー溝部を合わせて積層し、前記キーにより前記回転軸と第一の積層鉄心とを締結固定した回転子である。
【0010】
このように、2種類のキー溝部を備えた2種類の積層鉄心の共通のキー溝部にキーを装着するもので、キーを装着して発生するアンバランスモーメントを低減できる。
【0011】
【実施例】
以下、本発明の回転子について図面を参照しながら説明する。
【0012】
図1において、1はキー溝部を備えた回転軸、2はマグネット、3はキー、4aは第一の積層鉄心、4bは第二の積層鉄心、5は空間部である。
【0013】
そして、第一の積層鉄心4aは、図2に示すように中央部にキー溝部4cを1ヵ所備えたコア板を積層したものであり、また、第二の積層鉄心4bは、図3に示すように反対側にも同形状のキー溝部4dを備えたコア板を積層したものである。
【0014】
さらに、第一の積層鉄心4aのキー溝部4cと、第二の積層鉄心4bのキー溝部4cまたは4dの一方とを合わせ、第一の積層鉄心4aを第二の積層鉄心4bで両側から挟んで積層して積層鉄心を構成して、回転軸1のキー溝部にキー3を装着し、キー3を積層鉄心の第一の積層鉄心4aのキー溝部4cに嵌合装着している。
【0015】
なお、本実施例では第一の積層鉄心4aを第二の積層鉄心4bで両側から挟んだ構成で説明したが、第一の積層鉄心4aと第二の積層鉄心4bを各1個で構成してもよく、この場合も同様に、キー溝部合わせて積層し第一の積層鉄心4aのキー溝部4cにキー3を装着すればよい。
【0016】
また、マグネットにかえて、積層鉄心に極歯を設け、極歯に巻線を施して整流子に結線した電機子(図示せず)としても実施できる。
【0017】
上記により、回転軸と積層鉄心の回転時の保持トルクを確保できると同時に、キー溝部の空間部を対称にできるので、アンバランスモーメントを最小にすることができる。
【0018】
【発明の効果】
上記の実施例から明らかなように、2種類のキー溝部を備えた2種類の積層鉄心の共通のキー溝部にキーを装着するもので、積層鉄心のキー溝部の空間部により生じるアンバランスモーメントを打ち消すことができ、バランス調整が不要な生産性の高い回転子を得ることができる。
【図面の簡単な説明】
【図1】本発明の実施例の回転子の断面図
【図2】第一の積層鉄心の平面図
【図3】第二の積層鉄心の平面図
【図4】従来の回転子の断面図
【符号の説明】
1 回転軸
3 キー
4a 第1の積層鉄心
4b 第2の積層鉄心
4c,4d キー溝部
5 空間部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotor for fastening a rotating shaft and a laminated iron core with a key, and particularly to an improvement in imbalance.
[0002]
[Prior art]
In a rotor having a large difference between the output shaft of the rotating shaft and the outer diameter of the rotor magnet, a laminated core acting as a yoke for the rotor magnet may be provided between the rotating shaft and the rotor magnet. As a fixing method, a method such as press-fitting, shrink fitting, and bonding is generally used.
[0003]
However, when a holding torque cannot be obtained by the above method, a key is provided between the rotating shaft and the laminated core.
[0004]
In FIG. 4, reference numeral 41 denotes a rotating shaft having a key groove, 42 denotes a magnet, 43 denotes a key, and 44 denotes a laminated iron core having one key groove, and a
[0005]
At this time, the
[0006]
[Problems to be solved by the invention]
However, in the conventional configuration, the balance adjustment by attaching the balance putty or cutting the laminated core deteriorates the productivity of the rotor. In such a case, there has been a problem that the balance cannot be adjusted only by cutting the balance putty or the laminated iron core, or a key longer than necessary must be used.
[0007]
An object of the present invention is to solve the above-mentioned problem, and to provide a rotor that does not require balance adjustment in a rotor using a key.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, a rotor according to the present invention includes a key, a rotating shaft having a key groove, a first laminated core laminated with one key groove in the center, and the first laminated core. And a second laminated iron core laminated with the same shape key groove also on the opposite side, wherein the key and the key shaft of the rotating shaft and the axial length of the first laminated core are substantially the same size, One of the key groove portions of the second laminated core is aligned with the key groove portion of the first laminated core, and the rotary shaft and the first laminated core are fastened and fixed by the key .
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
In order to solve the above-mentioned problems, the present invention provides a key, a rotary shaft having a key groove, a first laminated core laminated with one key groove in the center, and the same shape as the first laminated core. And a second laminated core laminated on the opposite side with the key groove portion of the first side, and the key and the key groove portion of the rotating shaft and the first laminated core have substantially the same axial length, and A rotor in which one of the key grooves of the second laminated core is aligned with a key groove of the laminated core of the first and second laminated cores, and the rotary shaft and the first laminated core are fastened and fixed by the keys .
[0010]
As described above, the key is mounted on the common key groove of the two types of laminated cores having the two types of key grooves, and the unbalance moment generated by mounting the key can be reduced.
[0011]
【Example】
Hereinafter, the rotor of the present invention will be described with reference to the drawings.
[0012]
In FIG. 1, reference numeral 1 denotes a rotary shaft having a key groove, 2 denotes a magnet, 3 denotes a key, 4a denotes a first laminated core, 4b denotes a second laminated core, and 5 denotes a space.
[0013]
As shown in FIG. 2, the first laminated core 4a is formed by laminating a core plate having one key groove 4c at the center, and the second laminated core 4b is formed as shown in FIG. As described above, a core plate having a key groove portion 4d of the same shape is also laminated on the opposite side.
[0014]
Further, the key groove portion 4c of the first laminated core 4a and one of the key grooves 4c or 4d of the second laminated core 4b are combined, and the first laminated core 4a is sandwiched between both sides of the second laminated core 4b. The laminated core is formed by lamination, the key 3 is mounted on the key groove of the rotating shaft 1, and the key 3 is fitted and mounted on the key groove 4c of the first laminated core 4a of the laminated core.
[0015]
In this embodiment, the first laminated core 4a is described as being sandwiched between the second laminated cores 4b from both sides. However, the first laminated core 4a and the second laminated core 4b are each constituted by one piece. In this case as well, the key 3 may be attached to the key groove 4c of the first laminated iron core 4a in the same manner.
[0016]
Further, instead of a magnet, an armature (not shown) in which pole teeth are provided on a laminated iron core, winding is applied to the pole teeth, and the pole teeth are connected to a commutator.
[0017]
As described above, the holding torque at the time of rotation of the rotating shaft and the laminated core can be secured, and at the same time, the space of the key groove can be made symmetrical, so that the unbalance moment can be minimized.
[0018]
【The invention's effect】
As is clear from the above embodiment, the key is mounted on the common key groove of the two types of laminated cores having two types of key grooves, and the unbalanced moment generated by the space of the key groove of the laminated core is reduced. It is possible to obtain a highly productive rotor that can be canceled and does not require balance adjustment.
[Brief description of the drawings]
1 is a sectional view of a rotor according to an embodiment of the present invention; FIG. 2 is a plan view of a first laminated core; FIG. 3 is a plan view of a second laminated core; FIG. 4 is a sectional view of a conventional rotor; [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotating shaft 3 Key 4a First laminated core 4b Second laminated core 4c, 4d Keyway 5 Space
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32092397A JP3570181B2 (en) | 1997-11-21 | 1997-11-21 | Rotor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32092397A JP3570181B2 (en) | 1997-11-21 | 1997-11-21 | Rotor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11155248A JPH11155248A (en) | 1999-06-08 |
JP3570181B2 true JP3570181B2 (en) | 2004-09-29 |
Family
ID=18126797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32092397A Expired - Fee Related JP3570181B2 (en) | 1997-11-21 | 1997-11-21 | Rotor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3570181B2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008011588A1 (en) * | 2008-02-28 | 2009-09-10 | Metabowerke Gmbh | Armature for electric motor of electric hand tool device, has armature core force-fittingly non-resting against armature shaft at both axial ends along axial longitudinal sections of central opening |
DE102008054381A1 (en) * | 2008-12-08 | 2010-06-10 | Robert Bosch Gmbh | Electric machine with a flywheel |
JP5033841B2 (en) * | 2009-06-02 | 2012-09-26 | 日立オートモティブシステムズ株式会社 | Rotating electric machine and manufacturing method thereof |
JP5558211B2 (en) * | 2010-06-02 | 2014-07-23 | トヨタ自動車株式会社 | Rotor shaft for rotating electrical machine and rotor for rotating electrical machine |
JP6275457B2 (en) * | 2013-11-19 | 2018-02-07 | 日本電産サンキョー株式会社 | Rotor and motor |
CN105782052B (en) * | 2014-12-24 | 2018-04-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
DE102015012912B4 (en) * | 2015-10-07 | 2017-05-18 | Thyssenkrupp Presta Teccenter Ag | Rotor structure with form-fitting fastened laminated cores |
DE102016216476A1 (en) | 2016-09-01 | 2018-03-01 | Siemens Aktiengesellschaft | Electric machine |
-
1997
- 1997-11-21 JP JP32092397A patent/JP3570181B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH11155248A (en) | 1999-06-08 |
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