JPH04190669A - Rotor structure of induction motor - Google Patents
Rotor structure of induction motorInfo
- Publication number
- JPH04190669A JPH04190669A JP31905990A JP31905990A JPH04190669A JP H04190669 A JPH04190669 A JP H04190669A JP 31905990 A JP31905990 A JP 31905990A JP 31905990 A JP31905990 A JP 31905990A JP H04190669 A JPH04190669 A JP H04190669A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- shaft
- diameter
- swelling
- inner diameter
- 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.)
- Pending
Links
- 230000006698 induction Effects 0.000 title claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 229910000576 Laminated steel Inorganic materials 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 3
- 238000003475 lamination Methods 0.000 abstract description 2
- 230000008961 swelling Effects 0.000 abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Induction Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、誘導電動機のロータ構造に関するものである
。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a rotor structure for an induction motor.
従来の技術
誘導電動機は、エアコン・洗濯機等の家電製品や工作機
械、設備機械等に幅広く使われているが、近年、特に家
電製品に使用される比較的小型の誘導電動機においては
、より低騒音化への要求が厳しくなってきている。Conventional technology Induction motors are widely used in home appliances such as air conditioners and washing machines, machine tools, equipment, etc., but in recent years, relatively small induction motors used especially in home appliances have become more efficient. Requirements for noise reduction are becoming stricter.
以下、従来の誘導電動機のロータの構成を第２図、第３
図に基づいて説明する。すなわち、１は鋼板を積層して
なるロータ鉄心、２はロータ鉄心１のスロット内・エン
ドリングを形成する導体、３はロータ鉄心１と導体２か
ら形成されるロータ、４はロータ３の内径部に圧入・固
着されるシャフトである。The rotor configuration of a conventional induction motor is shown in Figures 2 and 3 below.
This will be explained based on the diagram. That is, 1 is a rotor core made of laminated steel plates, 2 is a conductor forming the end ring in the slot of rotor core 1, 3 is a rotor formed from rotor core 1 and conductor 2, and 4 is an inner diameter part of rotor 3. This is a shaft that is press-fitted and fixed into the
以上の構成において、誘導電動機はロータ３が回転して
シャフト４を回転させるようにしている。In the above configuration, the rotor 3 of the induction motor rotates to rotate the shaft 4.
発明が解決しようとする課題
しかしながら、近年この種のモータを用いた製品の品質
や性能向上のため特に、低騒音・低振動化への要求が高
まっているので、影響度の高いロータの加工精度向上が
必要とされ、この分野への適用に関して数々の課題が指
摘されている。Problems to be Solved by the Invention However, in recent years, in order to improve the quality and performance of products using this type of motor, there has been an increasing demand for low noise and low vibration, so the machining accuracy of the rotor, which has a high impact, has increased. Improvements are needed, and a number of challenges have been pointed out regarding application in this field.
本発明は上記課題を解決するもの？１０−夕の外径膨れ
、端面へこみ・膨れを防止することを目的とするもので
ある。Does the present invention solve the above problems? The purpose is to prevent bulges in the outer diameter and dents and bulges on the end surface.
課題を解決するための手段
上記の目的を達成するために本発明は、ロータ鉄心の積
層方向の中央部と両端面部の内径を大きくし、内径に段
差を設けるものである。ロータにシャフトを圧入・固着
する場合、締代によるロータ外径の膨れによる振れａ、
両端面の膨れｂ・へこみＣを極力防止して、ロータ・シ
ャフト合体の精度向上（外径振れ・アンバランス）を容
易にしたものである。Means for Solving the Problems In order to achieve the above-mentioned object, the present invention increases the inner diameter of the central part and both end face parts in the lamination direction of the rotor core, and provides a step in the inner diameter. When press-fitting and fixing the shaft to the rotor, runout a due to the expansion of the rotor outer diameter due to the tightening allowance,
Bulges B and dents C on both end faces are prevented as much as possible, making it easier to improve the precision of combining the rotor and shaft (outer diameter runout and imbalance).
作用
上記構成により、ロータ鉄心を製造する際、内径の中央
部と両端面部に大きくした段差を設けることで、導体鋳
造後のロータにシャフトを圧入・固着するときのロータ
外径振れ・両端面振れ精度を向上することで、誘導電動
機の騒音・振動の低減を容易にできるものである。Effect With the above configuration, when manufacturing the rotor core, by providing a large step at the center of the inner diameter and both end faces, the rotor outer diameter runout and both end face runout are reduced when the shaft is press-fitted and fixed to the rotor after conductor casting. By improving accuracy, it is possible to easily reduce the noise and vibration of the induction motor.
実施例 以下、本発明の一実施例を第１図に基づいて説明する。Example An embodiment of the present invention will be described below with reference to FIG.
尚、本発明はロータ鉄心５の内径に段差ｄを設けたもの
に関するなめ、その他の部品については、従来と同一で
あり、同じ番号を付与して説明を省略する。Incidentally, in the present invention, the part related to the step d provided on the inner diameter of the rotor core 5, and other parts are the same as those of the prior art, so the same numbers are given and explanations are omitted.
図において、鋼板を積層してなるロータ鉄心５の内径の
中央部・両端面部に内径を大きくした段差ｄが設けられ
、ロータ鉄心５のスロット内・エンドリングに導体２を
鋳造してロータ６が形成された後、シャフト４をロータ
内径に圧入・固着させている。ロータ６とシャフト４の
締代をロータ内径の段差ｄにより緩和し、シャフト４を
ロータ内径に圧入・固着する際のロータ外径、両端面の
膨れ・へこみを防止するものである。In the figure, a step d with a larger inner diameter is provided at the center and both end faces of the rotor core 5 made of laminated steel plates, and the rotor 6 is constructed by casting a conductor 2 in the slot and end ring of the rotor core 5. After being formed, the shaft 4 is press-fitted and fixed to the inner diameter of the rotor. The interference between the rotor 6 and the shaft 4 is reduced by the step d in the inner diameter of the rotor, and the outer diameter of the rotor and both end faces are prevented from being bulged or dented when the shaft 4 is press-fitted and fixed to the inner diameter of the rotor.
発明の効果
以上の実施例から明らかなように本発明によれば、ロー
タ内径に段差を設ける二七により、ロータ外径、両端面
の膨れ・へこみを防止することが可能になり、ロータ外
径の振れによるギャップ不同の低減、アンバランス量の
低減ができ、誘導電動機の騒音や振動を低減し、さらに
、製品本体の騒音も低減することができる大きな効果を
奏するものである。Effects of the Invention As is clear from the above embodiments, according to the present invention, by providing a step on the inner diameter of the rotor, it is possible to prevent bulges and dents on the outer diameter of the rotor and both end faces, and to reduce the outer diameter of the rotor. This has the great effect of reducing gap disparity and unbalance due to runout, reducing noise and vibration of the induction motor, and further reducing noise of the product itself.
第１図は本発明の一実施例におけるロータの組立て断面
図、第２図は従来例のロータの組立て断面図、第３図は
ロータにシャフトを圧入・固着する際のロータの変形を
示す図である。
１．５・・・・・・ロータ鉄心、２・・・・・・導体、
３，６・・・・・・ロータ、４・・・・・・シャフト、
ａ・・・・・・ロータ外径振れ、ｂ・・・・・・ロータ
端面へこみ、Ｃ・・・・・・ロータ端面膨れ、ｄ・・・
・・・段差。FIG. 1 is an assembled sectional view of a rotor according to an embodiment of the present invention, FIG. 2 is an assembled sectional view of a conventional rotor, and FIG. 3 is a diagram showing the deformation of the rotor when the shaft is press-fitted and fixed to the rotor. It is. 1.5... Rotor core, 2... Conductor,
3, 6...Rotor, 4...Shaft,
a... Rotor outer diameter runout, b... Rotor end face dent, C... Rotor end face bulge, d...
···Step.
Claims (3)
法の一部を外周方向にシャフト直径よりも大きくした誘
導電動機のロータ構造。(1) A rotor structure for an induction motor in which a portion of the inner diameter of a rotor core made of laminated steel plates is larger in the outer circumferential direction than the shaft diameter.
ルミニウム合金を鋳込時に発生するロータ外径の膨れを
、ロータ内径の段差部で吸収させることを特徴とする請
求項１記載のロータ。(2) The rotor according to claim 1, wherein a bulge in the outer diameter of the rotor that occurs when aluminum or an aluminum alloy for a conductor is cast into the rotor core is absorbed by a stepped portion in the inner diameter of the rotor.
とシャフトの締代によるロータ外径の振れ、両端面の膨
れ・へこみをロータ内径の段差部で吸収させることを特
徴とする請求項１記載のロータ。(3) When the rotor is fixed to the shaft, the deflection of the rotor outer diameter due to the tightness between the rotor inner diameter and the shaft, and the bulges and dents on both end faces are absorbed by the stepped portion of the rotor inner diameter. Rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31905990A JPH04190669A (en) | 1990-11-21 | 1990-11-21 | Rotor structure of induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31905990A JPH04190669A (en) | 1990-11-21 | 1990-11-21 | Rotor structure of induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04190669A true JPH04190669A (en) | 1992-07-09 |
Family
ID=18106043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31905990A Pending JPH04190669A (en) | 1990-11-21 | 1990-11-21 | Rotor structure of induction motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04190669A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0957561A2 (en) * | 1998-04-14 | 1999-11-17 | Alstom UK Limited | Rotor cores for electrical rotating machines |
| JP2008092673A (en) * | 2006-10-02 | 2008-04-17 | Denso Corp | Rotor of ac generator for vehicle |
| DE102019200865A1 (en) * | 2019-01-24 | 2020-07-30 | Audi Ag | Rotor for an electric motor |
-
1990
- 1990-11-21 JP JP31905990A patent/JPH04190669A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0957561A2 (en) * | 1998-04-14 | 1999-11-17 | Alstom UK Limited | Rotor cores for electrical rotating machines |
| EP0957561A3 (en) * | 1998-04-14 | 2000-12-20 | Alstom UK Limited | Rotor cores for electrical rotating machines |
| JP2008092673A (en) * | 2006-10-02 | 2008-04-17 | Denso Corp | Rotor of ac generator for vehicle |
| US7977846B2 (en) | 2006-10-02 | 2011-07-12 | Denso Corporation | Rotor for vehicular alternating current generator |
| DE102019200865A1 (en) * | 2019-01-24 | 2020-07-30 | Audi Ag | Rotor for an electric motor |
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