JP3040152B2 - Induction motor rotor - Google Patents
Induction motor rotorInfo
- Publication number
- JP3040152B2 JP3040152B2 JP2293855A JP29385590A JP3040152B2 JP 3040152 B2 JP3040152 B2 JP 3040152B2 JP 2293855 A JP2293855 A JP 2293855A JP 29385590 A JP29385590 A JP 29385590A JP 3040152 B2 JP3040152 B2 JP 3040152B2
- Authority
- JP
- Japan
- Prior art keywords
- slot
- rotor
- slots
- rotor shaft
- 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.)
- Expired - Fee Related
Links
Landscapes
- Induction Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、家電商品等に用いられる誘導電動機の回転
子に関するものである。Description: TECHNICAL FIELD The present invention relates to a rotor of an induction motor used for home electric appliances and the like.
従来の技術 近年、誘導電動機の回転子は、高効率化と共に製造の
容易化が求められている。2. Description of the Related Art In recent years, a rotor for an induction motor has been required to have high efficiency and to be easily manufactured.
従来、この種の誘導電動機の回転子は一般に第８図お
よび第９図に示すような構成であった。すなわち、内転
型の誘導電動機の回転子において、まったく同径、丸形
のスロット101a、101bを千鳥型に配置し、それぞれのス
ロット101a、101bに開口部102を設けた回転子鉄心103を
１枚ごとに少しずつ回転子軸104の円周方向に回転さ
せ、複数枚積層してスキユ（角度θ）を形成した後、導
体バー105を前記スロット101a、101bの内部へ挿入し、
回転子鉄心103の両側において前記導体バー105の挿通す
る孔を有するエンドリング106と電気的に接続して回転
子を構成していた。Conventionally, the rotor of this type of induction motor generally has a configuration as shown in FIGS. That is, in the rotor of the adduction type induction motor, the slots 101a and 101b of exactly the same diameter and the round shape are arranged in a staggered manner, and the rotor core 103 having the opening 102 in each of the slots 101a and 101b is one. After rotating the rotor shaft 104 a little bit at a time in the circumferential direction and laminating a plurality of pieces to form a skew (angle θ), the conductor bar 105 is inserted into the slots 101a and 101b,
On both sides of the rotor core 103, the rotor is constituted by being electrically connected to an end ring 106 having a hole through which the conductor bar 105 is inserted.
発明が解決しようとする課題 このような従来の構成では、回転子鉄心103の外周部
近傍に設けたスロット101a、101bのうち、前記回転子軸
104からの寸法がＡなるスロット101a相互が形成する歯1
07aの幅寸法Ｃは同寸法がＢなるスロット101b相互が形
成する歯107bの幅寸法Ｄよりも小さくなるため、この部
分の磁束密度が上昇しモータ効率が低下するという課題
があった。SUMMARY OF THE INVENTION In such a conventional configuration, among the slots 101a and 101b provided near the outer peripheral portion of the rotor core 103, the rotor shaft
The teeth 1 formed by the slots 101a having dimensions A from 104
Since the width C of 07a is smaller than the width D of the teeth 107b formed by the slots 101b having the same size B, there is a problem that the magnetic flux density in this portion increases and the motor efficiency decreases.
また、平面的にはスロット101aとスロット101bはまっ
たく同一寸法であるが、回転子軸104からの径方向寸法
が異なるためスキユ（角度θ）が異なることになる。す
なわち、挿入する導体バー105の直径も異なるものを使
用する必要があり、部品点数の増加と共に組立に時間が
かかるという課題があった。The slots 101a and 101b have exactly the same dimensions in plan view, but have different skews (angles θ) due to different radial dimensions from the rotor shaft 104. That is, it is necessary to use conductor bars 105 having different diameters to be inserted, and there has been a problem that it takes time to assemble as the number of parts increases.
本発明は上記課題を解決するもので、スロットａとス
ロットｂの総断面積を確保すると共に、相隣接スロット
ａが形成する歯幅寸法Ｃと相隣接するスロットｂの歯幅
寸法Ｄを略同等にしてモータ効率の上昇し、すべてのス
ロットａとスロットｂに最大直径を同一径とする導体バ
ーが挿入でき、部品点数が削減できる誘導電動機の固定
子を提供することを目的とする。The present invention solves the above-described problem, and secures the total cross-sectional area of the slot a and the slot b and makes the tooth width dimension C of the adjacent slot a substantially equal to the tooth width dimension D of the adjacent slot b. Accordingly, it is an object of the present invention to provide a stator for an induction motor in which the motor efficiency increases, a conductor bar having the same maximum diameter can be inserted into all the slots a and b, and the number of parts can be reduced.
課題を解決するための手段 本発明は上記目的を達成するために、回転子軸と、こ
の回転子軸が圧入される回転子軸孔からの径方向寸法Ａ
の位置に歯幅寸法Ｃの間隔を持って配設される丸形のス
ロットａと、前記回転子軸孔からの径方向寸法Ａより大
きい径方向寸法Ｂの位置に、前記歯幅寸法Ｃと略同等の
幅の歯幅寸法Ｄの間隔を持って前記丸形のスロットａと
交互に千鳥状に配設される丸形のスロットｂとを設け、
前記回転子軸の回りに一定の角度ずつ回転し積層固着し
てスキユされた回転子鉄心と、この回転子鉄心のスロッ
トａおよびスロットｂに挿入される丸形の導体バーと、
この導体バーの両端部に前記回転子鉄心を挟み設けられ
るエンドリングとを備え、前記導体バーの最大直径を同
一径で形成できるように前記スロットｂの孔径に対し、
スロットａの孔径を、（スロットｂのスキユ角θｂのCO
S.）／（スロットａのスキユ角θａのCOS.）に設定した
構成としたものである。Means for Solving the Problems In order to achieve the above object, the present invention provides a rotor shaft and a radial dimension A from a rotor shaft hole into which the rotor shaft is press-fitted.
At a position with a tooth width dimension C at an interval and a radial dimension B larger than a radial dimension A from the rotor shaft hole. The round slots a and the round slots b alternately arranged in a zigzag pattern are provided at intervals of the tooth width dimension D having substantially the same width,
A rotor core rotated by a predetermined angle around the rotor axis and stacked and fixed and skewed; a round conductor bar inserted into slots a and b of the rotor core;
An end ring is provided at both ends of the conductor bar so as to sandwich the rotor core, and a maximum diameter of the conductor bar is formed with respect to a hole diameter of the slot b so that the same diameter can be formed.
When the hole diameter of the slot a is
S.) / (COS of the skew angle θa of the slot a).
作用 本発明は上記した構成により、回転子鉄心の全スロッ
トの総断面積することができ、相隣接するスロットａが
形成する歯の幅寸法Ｃと相隣接するスロットｂが形成す
る歯の幅寸法が同等に設定でき、製造時に全てのスロッ
トａおよびスロットｂに挿入される導体バーの直径を同
一径のものを使用でき、組立作業の効率の改善ができる
ことになる。According to the present invention, the total cross-sectional area of all the slots of the rotor core can be increased by the above-described configuration, and the width dimension C of the teeth formed by the adjacent slots a and the width dimension of the teeth formed by the adjacent slots b can be obtained. Can be set equally, and the conductor bars to be inserted into all the slots a and b at the time of manufacture can be of the same diameter, and the efficiency of the assembling operation can be improved.
実施例 以下、本発明の実施例について第１図〜第７図を参照
しながら説明する。Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 7.
図に示すように、１は回転子鉄心であり、回転子軸２
が圧入固着される回転子軸孔３と前記回転子鉄心１の外
周部近傍には形状が丸形で前記回転子軸孔３からの寸法
がＡなるスロットa4aと同寸法がＢなる寸法のスロットb
4bとが交互にかつ千鳥状に設けてあり、スロットa4aと
スロットb4bはそれぞれ開口部5aと開口部5bを有する。
前記回転子鉄心１はスキユが形成されるように積層さ
れ、前記回転子軸２に固着され前記スロットa4aには導
体バー6aが、スロットb4bには導体6bが挿入され、前記
回転子鉄心１の両端面で前記導体バー6a、6bが挿通する
孔を有するエンドリング７と電気的に結合するように設
ける。As shown in the figure, reference numeral 1 denotes a rotor core, and a rotor shaft 2
A slot a4a having a round shape and a dimension B from the rotor shaft hole 3 and having a dimension B from the rotor shaft hole 3 is provided in the vicinity of the rotor shaft hole 3 into which the rotor shaft hole 3 is press-fitted and fixed and an outer peripheral portion of the rotor core 1. b
4b are provided alternately and in a staggered manner, and the slots a4a and b4b have openings 5a and openings 5b, respectively.
The rotor core 1 is laminated so as to form a squeeze, and is fixed to the rotor shaft 2 and a conductor bar 6a is inserted into the slot a4a, and a conductor 6b is inserted into the slot b4b. Both ends are provided so as to be electrically coupled to an end ring 7 having holes through which the conductor bars 6a and 6b are inserted.
そして、スロットa4aのスキユ角度をθａとすると、
このスロットa4aに挿入可能な導体バー6aの直径Iaは Ia＝Ja×COS θａ（Ja:スロットa4aの直径）より求
まり、同様にスロットb4bのスキユ角度をθｂとする
と、導体バー6bの直径Ibは Ib＝Jb×COS θｂ（Jb:スロットb4bの直径）より決
まる。Then, assuming that the skew angle of the slot a4a is θa,
The diameter Ia of the conductor bar 6a that can be inserted into the slot a4a is obtained from Ia = Ja × COS θa (Ja: the diameter of the slot a4a). Ib = Jb × COS θb (Jb: diameter of slot b4b).
すなわち、スロットa4aの直径Jaは Ja＝Jb×COS θb/COS θａにより決定される寸法に
設ける。That is, the diameter Ja of the slot a4a is set to a dimension determined by Ja = Jb × COS θb / COS θa.
上記構成において、回転子鉄心１の外周部近傍に設け
られ、回転子軸孔３から径方向寸法がＡなるスロットa4
aと同寸法がＢなるスロットb4bとは（Ａ＜Ｂ）であり、
かつスロットa4aの面積（直径）はスロットb4bの面積
（直径）よりも小としている。したがって相隣接するス
ロットa4aが形成する歯8aの幅寸法Ｃを、相隣接するス
ロットb4bが形成する歯8bの幅寸法Ｄと同等に設定する
ことが可能となる。In the above configuration, a slot a4 provided near the outer peripheral portion of the rotor core 1 and having a radial dimension A from the rotor shaft hole 3.
The slot b4b having the same dimension B as a is (A <B),
The area (diameter) of the slot a4a is smaller than the area (diameter) of the slot b4b. Therefore, the width dimension C of the teeth 8a formed by the adjacent slots a4a can be set to be equal to the width dimension D of the teeth 8b formed by the adjacent slots b4b.
また、スロットa4aに挿入する導体バー6aとスロットb
4bに挿入する導体バー6bとは最大直径を同一形で形成し
たものを使用できることとなる。The conductor bar 6a inserted into the slot a4a and the slot b
As the conductor bar 6b inserted into 4b, a conductor bar having the same maximum diameter can be used.
以上のように、本実施例によればスロットa4aの面積
（直径）とスロットb4bの面積（直径）とを異なって設
けたことにより、全スロットの総断面積および相隣接す
るスロットa4aと相隣接するスロットb4bがそれぞれ形成
する歯8a、8bの幅寸法Ｃ、Ｄを理論的に必要な値に設定
することが可能になる。As described above, according to this embodiment, since the area (diameter) of the slot a4a and the area (diameter) of the slot b4b are provided differently, the total cross-sectional area of all slots and the adjacent slot a4a are adjacent to each other. The widths C and D of the teeth 8a and 8b formed by the corresponding slots b4b can be set to theoretically necessary values.
また、スロットa4aの直径Jaを Ja＝Jb×COS θb/COS θａとすることにより、全ス
ロット同径の導体バーを使用でき、誘導電動機の回転子
を構成する部品点数の削減が可能となる。Further, by setting the diameter Ja of the slot a4a to be Ja = Jb × COS θb / COS θa, conductor bars having the same diameter in all slots can be used, and the number of components constituting the rotor of the induction motor can be reduced.
発明の効果 以上の実施例から明らかなように、本発明によれば回
転子軸と、この回転子軸が圧入される回転子軸孔からの
径方向寸法Ａの位置に歯幅寸法Ｃの間隔を持って配設さ
れる丸形のスロットａと、前記回転子軸孔からの径方向
寸法Ａより大きい径方向寸法Ｂの位置に、前記歯幅寸法
Ｃと略同等の幅の歯幅寸法Ｄの間隔を持って前記丸形の
スロットａと交互に千鳥状に配設される丸形のスロット
ｂとを設け、前記回転子軸の回りに一定の角度ずつ回転
し積層固着してスキユされた回転子鉄心と、この回転子
鉄心のスロットａおよびスロットｂに挿入される丸形の
導体バーと、この導体バーの両端部に前記回転子鉄心を
挟み設けられるエンドリングとを備え、前記導体バーの
最大直径を同一径で形成できるように前記スロットの孔
径に対しスロットａの孔径をスロットｂのスキユ角θb/
スロットａのスキユ角θａに設定したので、２次導体の
総断面積を確保し、相隣接する丸形のスロットａと相隣
接する丸形のスロットｂが形成する各歯幅を同等の寸法
に確保することができると共に、各々のスロットに装着
可能な丸形の導体バーの最大直径を同寸に設定すること
により、全く同径の導体バーを使用することが可能とな
り、部品点数の削減、回転子組立時の工数を削減するこ
とができる誘導電動機の回転子を提供できる。As is clear from the above embodiments, according to the present invention, the distance between the rotor shaft and the radial dimension A from the rotor shaft hole into which the rotor shaft is press-fitted is set to the distance of the tooth width dimension C. And a tooth width dimension D having a width substantially equal to the tooth width dimension C at a position of a radial dimension B larger than a radial dimension A from the rotor shaft hole. The round slots a and the round slots b alternately arranged in a zigzag pattern are provided at an interval, and are rotated and fixed by a fixed angle around the rotor axis to be fixed and skewed. A rotor core, a round conductor bar inserted into slots a and b of the rotor core, and end rings provided at both ends of the conductor bar with the rotor core interposed therebetween; So that the maximum diameter of the slot can be formed with the same diameter. The hole diameter of slot a is set to the skew angle θb /
Since the skew angle θa of the slot a is set, the total cross-sectional area of the secondary conductor is secured, and each tooth width formed by the adjacent round slot a and the adjacent round slot b is set to the same size. By setting the maximum diameter of the round conductor bar that can be installed in each slot to the same size, it is possible to use conductor bars of exactly the same diameter, reducing the number of parts, It is possible to provide a rotor of an induction motor that can reduce man-hours at the time of assembling the rotor.
第１図は、本発明の一実施例の回転子鉄心の平面図、第
２図は同部分拡大図、第３図は同回転子の斜視図、第４
図は同導体バーの斜視図、第５図は同エンドリングの斜
視図、第６図は同回転子の部分断面図、第７図は同回転
子鉄心の平面図、第８図は従来の回転子鉄心の斜視図、
第９図は同回転子の平面図である。 １……回転子鉄心、２……回転子軸、３……回転子軸
孔、4a……スロットａ、4b……スロットｂ、6a、6b……
導体バー、７……エンドリング、8a、8b……歯。FIG. 1 is a plan view of a rotor core according to an embodiment of the present invention, FIG. 2 is an enlarged view of the same part, FIG. 3 is a perspective view of the rotor, and FIG.
FIG. 5 is a perspective view of the conductor bar, FIG. 5 is a perspective view of the end ring, FIG. 6 is a partial sectional view of the rotor, FIG. 7 is a plan view of the rotor core, and FIG. Perspective view of a rotor core,
FIG. 9 is a plan view of the rotor. 1 ... rotor core, 2 ... rotor shaft, 3 ... rotor shaft hole, 4a ... slots a, 4b ... slots b, 6a, 6b ...
Conductor bar, 7 ... End ring, 8a, 8b ... Tooth.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 身畑 幸博 大阪府大阪市城東区今福西６丁目２番61 号 松下精工株式会社内 (72)発明者 原口 栄徳 大阪府大阪市城東区今福西６丁目２番61 号 松下精工株式会社内 (56)参考文献 特開 昭58−201550（ＪＰ，Ａ) 特開 昭58−201551（ＪＰ，Ａ) 実開 平１−116572（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yukihiro Mabata 6-2-61 Imafukunishi, Joto-ku, Osaka-shi, Osaka Inside Matsushita Seiko Co., Ltd. (72) Inventor Eitoku Haraguchi Imafuku-nishi, Joto-ku, Osaka-shi, Osaka 6-2-61 Matsushita Seiko Co., Ltd. (56) References JP-A-58-201550 (JP, A) JP-A-58-201551 (JP, A) JP-A-1-116572 (JP, U)
Claims (1)
転子軸孔からの径方向寸法Ａの位置に歯幅寸法Ｃの間隔
を持って配設される丸形のスロットａと、前記回転子軸
孔からの径方向寸法Ａより大きい径方向寸法Ｂの位置
に、前記歯幅寸法Ｃと略同等の幅の歯幅寸法Ｄの間隔を
持って前記丸形のスロットａと交互に千鳥状に配設され
る丸形のスロットｂとを設け、前記回転子軸の回りに一
定の角度ずつ回転し積層固着してスキユされた回転子鉄
心と、この回転子鉄心のスロットａおよびスロットｂに
挿入される丸形の導体バーと、この導体バーの両端部に
前記回転子鉄心を挟み設けられるエンドリングとを備
え、前記導体バーの最大直径を同一径で形成できるよう
に前記スロットｂの孔径に対しスロットａの孔径を、
（スロットｂのスキユ角θｂのCOS.）／（スロットａの
スキユ角θａのCOS.）に設定した誘導電動機の回転子。1. A rotor shaft, and a round slot a provided at a position of a radial dimension A from a rotor shaft hole into which the rotor shaft is press-fitted with an interval of a face width dimension C. Alternately with the round slot a at a position of a radial dimension B larger than the radial dimension A from the rotor shaft hole with an interval of a tooth width dimension D having substantially the same width as the tooth width dimension C. And a rounded slot b arranged in a zigzag pattern, a rotor core rotated and fixed by a fixed angle around the rotor axis and stacked and fixed, and slots a and A round conductor bar inserted into the slot b, and end rings provided at both ends of the conductor bar so as to sandwich the rotor core, the slot being formed so that the maximum diameter of the conductor bar can be formed with the same diameter. The hole diameter of the slot a for the hole diameter of b,
The rotor of the induction motor set to (COS of the skew angle θb of the slot b) / (COS of the skew angle θa of the slot a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2293855A JP3040152B2 (en) | 1990-10-30 | 1990-10-30 | Induction motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2293855A JP3040152B2 (en) | 1990-10-30 | 1990-10-30 | Induction motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04168943A JPH04168943A (en) | 1992-06-17 |
| JP3040152B2 true JP3040152B2 (en) | 2000-05-08 |
Family
ID=17800030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2293855A Expired - Fee Related JP3040152B2 (en) | 1990-10-30 | 1990-10-30 | Induction motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3040152B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167890B (en) * | 2014-07-28 | 2018-04-27 | 大唐湘潭发电有限责任公司 | A kind of rotor end ring structure for double cage motor or deep slot motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58201550A (en) * | 1982-05-17 | 1983-11-24 | Mitsuba Denki Seisakusho:Kk | Rotor for dc rotary machine |
| JPS58201551A (en) * | 1982-05-20 | 1983-11-24 | Mitsuba Denki Seisakusho:Kk | Rotor for dc rotary machine |
| JPH01116572U (en) * | 1988-01-29 | 1989-08-07 |
-
1990
- 1990-10-30 JP JP2293855A patent/JP3040152B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04168943A (en) | 1992-06-17 |
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