JP2881459B2 - Induction motor cage rotor core - Google Patents
Induction motor cage rotor coreInfo
- Publication number
- JP2881459B2 JP2881459B2 JP31178789A JP31178789A JP2881459B2 JP 2881459 B2 JP2881459 B2 JP 2881459B2 JP 31178789 A JP31178789 A JP 31178789A JP 31178789 A JP31178789 A JP 31178789A JP 2881459 B2 JP2881459 B2 JP 2881459B2
- Authority
- JP
- Japan
- Prior art keywords
- iron core
- induction motor
- cage rotor
- iron
- portions
- 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
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Induction Machinery (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、誘導電動機のかご形回転子の鉄心に関する
ものである。Description: TECHNICAL FIELD The present invention relates to an iron core of a cage rotor of an induction motor.
［従来の技術と発明が解決するための手段］ 上記回転子の鉄心は、従来より、第５図に示すよう
に、全ての歯部（116）の外周部を橋絡するように打抜
いた鉄心板（112）を積層して鉄心（110）を製造してい
た。[Means for Solving the Prior Art and the Invention] As shown in FIG. 5, the iron core of the rotor has been conventionally punched so as to bridge the outer peripheral portions of all the teeth (116). The iron core (110) was manufactured by laminating the iron core plates (112).
この鉄心（110）であると、漏れ磁束が増大すること
により電動機の効率が落ちるという問題があった。With the iron core (110), there is a problem that the efficiency of the motor is reduced due to an increase in leakage magnetic flux.
そのため、このもれ磁束を最小限にする対策として橋
絡部（120）の径方向の長さａを、極力薄く、例えば0.1
（mm）〜0.3（mm）に加工していた。しかし、橋絡部（1
20）の長さａを0.1（mm）〜0.3（mm）で均一に加工する
ことは、非常に困難であるとともに、橋絡部（120）の
長さａに不均一な部分がもし存在すると、回転子の磁気
抵抗のバランスが崩れて、悪影響を及ぼすという問題が
あった。Therefore, as a measure to minimize the leakage flux, the radial length a of the bridging portion (120) is made as thin as possible, for example, 0.1
(Mm) to 0.3 (mm). However, the bridge (1
20) It is extremely difficult to process the length a uniformly at 0.1 (mm) to 0.3 (mm), and if there is an uneven portion in the length a of the bridging part (120). However, there has been a problem that the balance of the magnetic resistance of the rotor is lost, which has an adverse effect.
［発明の目的］ 本発明は、鉄心の機械的強度を向上させるとともに、
電動機の効率も向上させるという誘導電動機のかご形回
転子の鉄心を提供するものである。[Object of the Invention] The present invention improves the mechanical strength of the iron core,
It is an object of the present invention to provide a squirrel-cage rotor core of an induction motor that also improves the efficiency of the motor.
［課題を解決するための手段］ 本発明は、複数の歯部を放射状に突出させた鉄心板を
複数枚積層して形成した誘導電動機のかご形回転子の鉄
心において、前記鉄心板は、前記複数の歯部のうち、隣
接する２個の歯部の外周部を橋絡部によって橋絡し、か
つ、前記橋絡部を鉄心板の軸対象の位置にそれぞれ設け
たものであり、前記鉄心板を１個の歯部の角度分だけ１
枚毎にずらせて複数枚積層して鉄心を形成したものであ
る。[Means for Solving the Problems] The present invention relates to an iron-cage rotor of an induction motor formed by laminating a plurality of iron plates having a plurality of teeth radially protruding, wherein the iron plate is Out of a plurality of tooth portions, the outer peripheral portions of two adjacent tooth portions are bridged by a bridging portion, and the bridging portions are provided at axially symmetric positions of a core plate, respectively. The plate is moved by the angle of one tooth 1
The iron core is formed by laminating a plurality of sheets by shifting each sheet.
［作 用］ 本発明の誘導電動機のかご形回転子の鉄心であると、
鉄心の各層に橋絡部が所要角度ずつづれて存在している
ため、機械的強度が向上する。また、橋絡部が鉄心板の
軸対象な位置に設けられているため、鉄心の径方向のバ
ランスがよく、回転子が回転する際、回転のバランスを
崩さない。[Operation] When the iron core of the cage rotor of the induction motor of the present invention is used,
Since the bridging portions exist in the respective layers of the iron core at required angles, the mechanical strength is improved. Further, since the bridge portion is provided at a position axially symmetric to the iron core plate, the radial balance of the iron core is good, and the rotation balance is not lost when the rotor rotates.
［実施例］ 以下、本発明の一実施例を図面に基いて説明する。Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
（10）は、第１図に示すように、本実施例の誘導電動
機のかご形回転子の鉄心である。この鉄心（10）は複数
枚の鉄心板（12）が積層されたものであって、鉄心（1
0）の外周面の軸方向にスロット（14）及び歯部（16）
が交互に設けられている。また、鉄心（10）の軸芯に
は、回転子の軸を挿入するための孔（18）が設けられて
いる。(10) is the iron core of the squirrel-cage rotor of the induction motor of this embodiment, as shown in FIG. The iron core (10) is formed by stacking a plurality of iron core plates (12).
Slots (14) and teeth (16) in the axial direction of the outer peripheral surface of 0)
Are provided alternately. Further, a hole (18) for inserting the shaft of the rotor is provided in the shaft core of the iron core (10).
鉄心板（12）は、８枚の歯部（16）が設けられてい
る。この歯部（16）の内、２枚の歯部（16a）（16a）の
外周部が橋絡されて、橋絡部（20）が設けられている。
また、前記歯部（16a）（16a）とは軸対象の位置にある
歯部（16b）（16b）の外周部にも、橋絡部（20）が設け
られている。The iron core plate (12) is provided with eight teeth (16). Outer peripheral portions of the two tooth portions (16a) (16a) among the tooth portions (16) are bridged to provide a bridge portion (20).
Further, a bridging portion (20) is also provided on the outer peripheral portion of the tooth portions (16b) (16b) which are axially symmetric with the tooth portions (16a) (16a).
鉄心板（12）の表面における孔（18）の外周付近に
は、凹部（22）が４ケ所打抜かれている。また、この凹
部（22）によって鉄心（112）の裏面に凸部が形成され
る。この凹部（22）は、鉄心板（12）が積層された際
に、この凹部（22）と、他の一枚の鉄心板（12）の裏面
に形成された凸部が係合することにより２枚の鉄心板
（12）（12）を結合する役割と位置合わせの役割をする
（第４図の拡大縦断面図参照）。Four recesses (22) are punched in the surface of the iron core plate (12) near the outer periphery of the hole (18). In addition, a convex portion is formed on the back surface of the iron core (112) by the concave portion (22). When the iron core plate (12) is laminated, the concave portion (22) engages with the convex portion formed on the back surface of another iron core plate (12). It plays a role of joining the two iron core plates (12) and a position of alignment (see an enlarged vertical sectional view of FIG. 4).
次に、上記鉄心板（12）の積層状態を鉄心（10）の製
造工程を基にして説明する（第３図の分解斜視図参
照）。Next, the laminated state of the iron core plate (12) will be described based on the manufacturing process of the iron core (10) (see an exploded perspective view of FIG. 3).
打抜装置の打抜型内において、まず、打抜装置の刃部
によって最下段の鉄心板（12）を打抜く。次に、刃部を
45°だけ回転させて、鉄心板（12）を打抜き、前記最下
段の鉄心板（12）の上に、凹部（22）と凹部（22）が係
合するように積層する。再び、刃部を45°だけ回転させ
て、３段目の鉄心板（12）を打抜き、２段目の鉄心板
（12）の上に積層する。以下、同じように刃部を45°ず
つ回転させながら、鉄心板（12）を打抜いて８段目まで
積層する。In the punching die of the punching device, first, the lowermost iron core plate (12) is punched by the blade portion of the punching device. Next, remove the blade
The iron core plate (12) is punched by being rotated by 45 °, and laminated on the lowermost iron core plate (12) so that the concave portions (22) and the concave portions (22) are engaged with each other. Again, the blade is rotated by 45 °, the third core plate (12) is punched out, and the third core plate (12) is laminated on the second core plate (12). Hereinafter, the iron core plate (12) is punched out and laminated up to the eighth stage while the blade portion is similarly rotated by 45 °.
これによって各鉄心板（12）の上下方向は凹部（26）
（26）の係合によって固定され、また、径方向に隣接す
る８枚の歯部（16）（16）は、各層に存在する橋絡部
（20）によって結合される（第２図参照）。従って、鉄
心（10）は、製造された際に、一体となって製造され、
その作業を大幅に簡素化できる。As a result, the vertical direction of each iron core plate (12) is concave (26)
The eight teeth (16) and (16) which are fixed by the engagement of (26) and are radially adjacent to each other are connected by a bridging portion (20) existing in each layer (see FIG. 2). . Therefore, when the iron core (10) is manufactured, it is manufactured integrally,
That operation can be greatly simplified.
また、上記説明では、鉄心板（12）を８枚積層するこ
とにより、橋絡部（20）が鉄心（10）を一周するまでを
説明したが、機械的強度を考慮して、少なくと橋絡部
（20）が２周以上するのが好ましい。In the above description, eight iron core plates (12) are laminated to form a bridge (20) around the iron core (10). However, considering the mechanical strength, at least the bridge is required. It is preferable that the entanglement (20) makes two or more rounds.
以上により、製造した鉄心（10）は、鋳造枠にはめ込
み、この鋳造枠へ溶融したアルミニウムを注入すれば、
かご形導体棒、端絡環、通風翼を有する回転子を一度に
製造できる。As described above, the manufactured iron core (10) is fitted into a casting frame, and if molten aluminum is injected into the casting frame,
A rotor having a cage-shaped conductor rod, an end ring, and a ventilation blade can be manufactured at one time.
上記構成の鉄心（10）であると、径方向は橋絡部（2
0）によって結合され、また、軸方向は凹部（22）（2
2）によって結合されているため、その機械的強度が向
上し、製造作業も容易である。With the iron core (10) having the above configuration, the radial direction is the bridge (2
0) and axially recessed (22) (2
2), the mechanical strength is improved, and the manufacturing operation is easy.
また、鉄心（10）の８枚の歯部（16）の内、橋絡部
（20）が存在するのは２ケ所だけであるため、もれ磁束
が少なく、これによりスロット高調波が低減でき、起動
時のトルクリップルを改善できる。さらに、従来のよう
に橋絡部（20）の径方向の長さを小さくする必要がない
ため、加工精度が厳しく要求されない。Also, among the eight teeth (16) of the iron core (10), there are only two bridging portions (20), so there is little leakage magnetic flux, thereby reducing slot harmonics. , The torque ripple at startup can be improved. Further, since it is not necessary to reduce the radial length of the bridging portion (20) as in the related art, the processing accuracy is not strictly required.
［発明の効果］ 上記により、本発明の誘導電動機のかご形回転子の鉄
心は機械的強度向上するとともに、その製造工程が容易
となる。[Effects of the Invention] As described above, the iron core of the squirrel-cage rotor of the induction motor of the present invention improves the mechanical strength and facilitates the manufacturing process.
また、もれ磁束が少なくできるとともにスロット高調
波が低減でき、起動時のトルクリップルを改善できる。In addition, leakage magnetic flux can be reduced and slot harmonics can be reduced, so that torque ripple at the time of starting can be improved.
さらに、従来のように、橋絡部の径方向の長さを極端
に小さくする必要がないため、加工精度が厳しく要求さ
れない。Further, unlike the related art, it is not necessary to extremely reduce the radial length of the bridging portion, so that the processing accuracy is not strictly required.
特に、橋絡部が鉄心板の軸対象な位置に設けられてい
るためバランスがよく、回転子が回転する際に回転のバ
ランスを崩すことがない。In particular, since the bridging portion is provided at a position symmetrical to the core plate, the balance is good, and the rotation balance is not lost when the rotor rotates.
第１図は、本発明の一実施例を示すかご形回転子の鉄心
の平面図、 第２図は、第１図におけるＡ−Ａ線の外周面展開図、 第３図は、第１図における鉄心の分解斜視図、 第４図は、鉄心板を結合させた状態の拡大縦断面図、 第５図は、従来のかご形回転子の鉄心の平面図である ［符号の説明］ 10……鉄心 12……鉄心板 14……スロット 16……歯部 18……孔 20……橋絡部FIG. 1 is a plan view of an iron core of a cage rotor showing an embodiment of the present invention, FIG. 2 is a development view of an outer peripheral surface taken along line AA in FIG. 1, and FIG. Fig. 4 is an enlarged vertical sectional view showing a state in which iron core plates are joined together, and Fig. 5 is a plan view of an iron core of a conventional cage rotor. ... Iron core 12 ... Iron plate 14 ... Slot 16 ... Tooth 18 ... Hole 20 ... Bridge
Claims (1)
複数枚積層して形成した誘導電動機のかご形回転子の鉄
心において、 前記鉄心板は、 前記複数の歯部のうち、隣接する２個の歯部の外周部を
橋絡部によって橋絡し、かつ、前記橋絡部を鉄心板の軸
対象の位置にそれぞれ設けたものであり、 前記鉄心板を１個の歯部の角度分だけ１枚毎にずらせて
複数枚積層して鉄心を形成した ことを特徴とする誘導電動機のかご形回転子の鉄心。1. An iron core of a cage rotor of an induction motor formed by laminating a plurality of iron plates having a plurality of teeth protruding radially, wherein the iron plate is an adjacent one of the plurality of teeth. The outer peripheral portions of the two tooth portions are bridged by a bridging portion, and the bridging portions are respectively provided at positions symmetrical with respect to the iron core plate. An iron core for a squirrel-cage rotor of an induction motor, wherein a core is formed by laminating a plurality of sheets by shifting one by one by an angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31178789A JP2881459B2 (en) | 1989-11-29 | 1989-11-29 | Induction motor cage rotor core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31178789A JP2881459B2 (en) | 1989-11-29 | 1989-11-29 | Induction motor cage rotor core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03173328A JPH03173328A (en) | 1991-07-26 |
| JP2881459B2 true JP2881459B2 (en) | 1999-04-12 |
Family
ID=18021459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31178789A Expired - Fee Related JP2881459B2 (en) | 1989-11-29 | 1989-11-29 | Induction motor cage rotor core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2881459B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2888142B2 (en) | 1993-11-08 | 1999-05-10 | 三菱電機株式会社 | Rotary motor and method of manufacturing the same |
| JP3289596B2 (en) * | 1996-03-19 | 2002-06-10 | 三菱電機株式会社 | Radial gap type motor with core |
| DE19740286B4 (en) * | 1997-09-13 | 2004-03-18 | Volkswagen Ag | Component consisting of several layers of flat material and process for its production |
| FR2878659A1 (en) * | 2004-12-01 | 2006-06-02 | Renault Sas | Rotating machine e.g. electric motor, has rotor with discs having cuts forming notches, and male/female assemblies placed in assembling zones on rotor, where notches have constant section and do not any have male/female part outside zones |
| DE102009001035A1 (en) * | 2009-02-20 | 2010-08-26 | Robert Bosch Gmbh | Rotor arrangement for an electric motor |
| JP5741410B2 (en) * | 2011-11-29 | 2015-07-01 | トヨタ自動車株式会社 | Rotor for rotating electrical machines |
| CN203312934U (en) * | 2013-05-16 | 2013-11-27 | 张嘉宏 | Motor stator with improved structure |
-
1989
- 1989-11-29 JP JP31178789A patent/JP2881459B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03173328A (en) | 1991-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0641059B1 (en) | Rotor of synchronous motor | |
| JPH11155246A (en) | Iron core and its manufacture | |
| JPH1118339A (en) | Motor | |
| JPH0767272A (en) | Stator structure for synchronous machine, manufacture thereof and its tooth piece | |
| JP3220535B2 (en) | Linear pulse motor | |
| JP2881459B2 (en) | Induction motor cage rotor core | |
| US20200313473A1 (en) | Electric motor having split core stator | |
| JP2002315237A (en) | Laminated iron core of rotary electric machine | |
| JP3722126B2 (en) | Reluctance motor | |
| JP2003319578A (en) | Armature for rotating electric machine and its manufacturing method | |
| JP2003143787A (en) | Structure of stator of motor and manufacturing method therefor | |
| JP2741937B2 (en) | Cage type rotor | |
| JPH0426344A (en) | Core for cage rotor of induction motor | |
| JPH04372552A (en) | Laminated core for stator of motor | |
| JP3600654B2 (en) | Linear / rotary combined stepping motor | |
| JP2574490B2 (en) | Cage rotor | |
| JP2002218684A (en) | Rotor of rotating machine | |
| JPH0347423Y2 (en) | ||
| JPH0648350U (en) | Motor laminated core | |
| JPH08331782A (en) | Rotor for permanent magnet rotary electric machine | |
| JPS6019506Y2 (en) | Single pole inductor type rotating electric machine | |
| JPH0436212Y2 (en) | ||
| JPS63171150A (en) | Brushless dc motor | |
| JPH118953A (en) | Stator structure | |
| JP2520750Y2 (en) | Brushless motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |