JP5152957B2 - Stator core and motor stator and motor - Google Patents
Stator core and motor stator and motor Download PDFInfo
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- JP5152957B2 JP5152957B2 JP2007067024A JP2007067024A JP5152957B2 JP 5152957 B2 JP5152957 B2 JP 5152957B2 JP 2007067024 A JP2007067024 A JP 2007067024A JP 2007067024 A JP2007067024 A JP 2007067024A JP 5152957 B2 JP5152957 B2 JP 5152957B2
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- iron core
- yoke
- core
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Description
本発明は、ＡＣサーボモータ用ステータ鉄心の構成に関する。 The present invention relates to a configuration of a stator core for an AC servo motor.
従来のＡＣサーボモータは、空隙部の磁気エネルギーの変化を緩和しコギングトルクを低減化するために歯部鉄心の内周側を連結する（例えば、特許文献１参照）などの方法がとられていた。
図３は、従来のステータ鉄心の構造を示す側断面図である。図４はスロット部の構成を示す展開図である。図において、１はヨーク部鉄心、２は歯部鉄心、３はコイル、４は歯部鉄心２の連結橋絡部、５はヨーク幅、６は歯部幅、７はヨーク部鉄心長、８は歯部鉄心長である。
ヨーク部鉄心１の軸方向の長は、図３に示すように歯部鉄心４の軸方向の長と同一の長さとなっている。また、ヨーク幅は図４に示すように歯部幅の１／２以上となっている。
ステータ鉄心としてヨーク部鉄心１の磁気断面積は、スロット内の漏れ磁束を考慮して歯部鉄心４の磁気断面と同等以上の寸法比とし、各積層鉄心の材料としては同一の材料を用いている。
FIG. 3 is a side sectional view showing the structure of a conventional stator iron core. FIG. 4 is a development view showing the structure of the slot portion. In the figure, 1 is a yoke iron core, 2 is a tooth iron core, 3 is a coil, 4 is a connecting bridge part of the
The axial length of the yoke core 1 is the same as the axial length of the tooth core 4 as shown in FIG. Further, the yoke width is at least 1/2 of the tooth width as shown in FIG.
The magnetic cross-sectional area of the yoke core 1 as the stator core is set to a dimensional ratio equal to or greater than the magnetic cross-section of the tooth core 4 in consideration of leakage magnetic flux in the slot, and the same material is used as the material of each laminated core. Yes.
ところが、ＡＣサーボモータは、小形軽量化と制御性に多大の悪影響を与えるコギングトルクの低減化が必要となる。モータの銅損を低減するためにスロット面積を大きくした場合、ステータ鉄心の磁気飽和により磁気エネルギー変化が増大しコギングトルクが大きくなるなどの問題があった。又、モータの鉄損を低減するための低鉄損材料は、内周側を連結した橋絡部の打ち抜き加工性に問題があり使用できなかった。
本発明はこのような問題点に鑑みてなされたものであり、モータの損失を低減化するとともにコギングトルクの増大化を防止することができるＡＣサーボモータ用のステータとこれを用いた電動機を提供することを目的とする。
However, the AC servo motor needs to be reduced in size and weight and reduced in cogging torque, which has a great adverse effect on controllability. When the slot area is increased in order to reduce the copper loss of the motor, there are problems such as an increase in magnetic energy due to magnetic saturation of the stator iron core and an increase in cogging torque. Moreover, the low iron loss material for reducing the iron loss of the motor cannot be used due to a problem in the punching workability of the bridge portion connecting the inner peripheral sides.
The present invention has been made in view of such problems, and provides a stator for an AC servo motor that can reduce motor loss and prevent an increase in cogging torque, and an electric motor using the same. The purpose is to do.
上記問題を解決するため、本発明は、次のように構成したものである。
本発明に係るステータ鉄心は、積層されたリング状のヨーク部鉄心と、前記ヨーク部鉄心の内周側に等間隔で配列されかつ積層された歯部鉄心と、を備え、隣り合う前記歯部鉄心の内周側は、橋絡部によって連結され、前記ヨーク部鉄心の径方向の幅は、一定であり、かつ、前記歯部鉄心の周方向の幅の半分よりも狭く、前記ヨーク部鉄心の軸方向の長さは、前記歯部鉄心の軸方向の長さよりも長いものである。
なお、前記ヨーク部鉄心が前記歯部鉄心よりも珪素含有率の多い電磁鋼板を用いたものであってもよい。
また、前記ヨーク部鉄心が前記歯部鉄心よりも板厚の薄い電磁鋼板を用いたものであってもよい。
また、前記ヨーク部鉄心がアモルファス合金を用いたものであってもよい。
また本発明に係る電動機のステータは、前記ステータ鉄心と、隣り合う前記歯部鉄心の間に形成されたスロットに装入したステータコイルとからなる電動機のステータである。
また本発明に係る電動機は、前記ステータと、前記ステータの内周側に空隙を介して設けたロータとからなる電動機である。
In order to solve the above problems, the present invention is configured as follows.
The stator core according to the present invention comprises a stacked ring-shaped yoke portion iron core, and a sequenced and laminated teeth cores at regular intervals in the inner periphery of the yoke portion iron core, the adjacent teeth The inner peripheral side of the iron core is connected by a bridging portion, the radial width of the yoke core is constant, and is narrower than half the circumferential width of the tooth core , the yoke core. The axial length is longer than the axial length of the tooth core.
It is also I der what the yoke portion iron core with high magnetic steel sheet of silicon content than the tooth portion iron core.
It is also I der what the yoke portion iron core has a thin electromagnetic steel plate having a plate thickness of than the tooth portion iron core.
It is also I der what the yoke portion iron core using an amorphous alloy.
The stator of the motor according to the present invention includes: the stator iron core, a stator of a motor comprising a stator coil that is charged into formed between the tooth portion iron core adjacent slot.
The electric motor according to the present invention includes: the stator, a motor comprising a rotor which is provided with a gap on the inner circumferential side of said stator.
本発明によると、ヨーク部鉄心の径方向の幅を歯部鉄心の幅よりも狭くし、ヨーク部の長さを歯部の長さよりも長くすることにより、コギングトルクが問題とならない磁気断面積を確保することができ、これらによりスロット面積を大きして銅損を低減することができる。
また、ヨーク部鉄心は単純形状なため打ち抜き加工性に優れており、歯部鉄心の材料よりも低鉄損の材料を使用することができるため鉄損を低減することができる。
また、コギングトルクが小さく、打ち抜き加工性のよい安価な電動機を得ることができる。
According to the present invention, the magnetic cross-sectional area in which cogging torque does not become a problem by making the width in the radial direction of the yoke core smaller than the width of the tooth core and making the yoke length longer than the length of the tooth. As a result, the slot area can be increased and the copper loss can be reduced.
Also, the yoke portion iron core is excellent in simple shapes for punching workability, it is possible to reduce the iron loss because it can than the material of the tooth portion iron core using a material of low iron loss.
In addition , an inexpensive electric motor with a small cogging torque and good punchability can be obtained.
以下、本発明の実施の形態について図を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
図１は、本発明の同期電動機用ステータ鉄心の側断面図、図２はスロット部の構成を示す図である。図の符号は従来例で述べたものと同じである。図１において、ヨーク部鉄心長７は歯部鉄心長８より長くしている。また図２のヨーク幅は歯部幅の１／２以下としている。
したがって、コギングトルクを小さくでき、打ち抜き加工性に優れている。また、歯部鉄心の材料よりも低鉄損の材料を使用することができるため鉄損を低減することができ、安価な電動機を得ることができる。
本発明が従来技術と異なる部分は、ヨーク部の径方向の幅が前記歯部の幅よりも狭く、かつ、軸方向の長さとしてヨーク部の長さが歯部の長さよりも長いことである
FIG. 1 is a side sectional view of a stator core for a synchronous motor according to the present invention, and FIG. 2 is a diagram showing a configuration of a slot portion. The reference numerals in the figure are the same as those described in the conventional example. In FIG. 1, the yoke core length 7 is longer than the tooth core length 8. Further, the yoke width in FIG. 2 is set to ½ or less of the tooth width.
Therefore, the cogging torque can be reduced and the punching processability is excellent. Moreover, since a material with a lower iron loss than the material of the tooth core can be used, the iron loss can be reduced, and an inexpensive electric motor can be obtained.
The present invention is different from the prior art in that the radial width of the yoke part is narrower than the width of the tooth part, and the yoke part is longer than the tooth part in the axial direction. is there
１ ヨーク部鉄心
２ 歯部鉄心
３ コイル
４ 連結橋絡部
５ ヨーク幅
６ 歯部幅
1
Claims (3)
前記ヨーク部鉄心とは別体で構成されるとともに、前記ヨーク部鉄心の内周側に等間隔で配列されかつ積層された歯部鉄心と、を備え、
隣り合う前記歯部鉄心の内周側は、橋絡部によって連結され、
前記ヨーク部鉄心の径方向の幅は、一定であり、かつ、前記歯部鉄心の周方向の幅の半分よりも狭く、
前記ヨーク部鉄心の軸方向の長さは、前記歯部鉄心の軸方向の長さよりも長いことを特徴とするステータ鉄心。 A laminated ring-shaped yoke iron core;
The yoke part iron core is configured separately from the yoke part iron core, and includes tooth part iron cores arranged and laminated at equal intervals on the inner peripheral side of the yoke part iron core,
The inner peripheral side of the adjacent tooth cores are connected by a bridging portion,
The radial width of the yoke iron core is constant and narrower than half the circumferential width of the tooth iron core,
The yoke core is characterized in that the axial length of the yoke core is longer than the axial length of the tooth core.
隣り合う前記歯部鉄心の間に形成されたスロットに装入したステータコイルと、
を備え、
前記ヨーク部鉄心は、前記歯部鉄心の軸方向両端から前記ステータコイルの軸方向両端までそれぞれ軸方向外側に伸びていることを特徴とする電動機のステータ。 The stator iron core according to claim 1,
A stator coil inserted into a slot formed between the adjacent tooth cores;
With
The yoke portion iron core, stator of the motor, characterized in that the axis Direction both ends of the tooth portion iron core extending in the axial direction outwardly until both axial ends of the stator coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007067024A JP5152957B2 (en) | 2007-03-15 | 2007-03-15 | Stator core and motor stator and motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007067024A JP5152957B2 (en) | 2007-03-15 | 2007-03-15 | Stator core and motor stator and motor |
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| Publication Number | Publication Date |
|---|---|
| JP2008228527A JP2008228527A (en) | 2008-09-25 |
| JP5152957B2 true JP5152957B2 (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2007067024A Expired - Fee Related JP5152957B2 (en) | 2007-03-15 | 2007-03-15 | Stator core and motor stator and motor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532992A (en) * | 2016-10-19 | 2017-03-22 | 深圳市正宇电动汽车技术有限公司 | Combined magnetic circuit motor and preparation method thereof |
| WO2019058832A1 (en) | 2017-09-21 | 2019-03-28 | 株式会社村田製作所 | Cable-type antenna |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60167638A (en) * | 1984-02-08 | 1985-08-31 | Toshiba Corp | Stator core of rotary electric machine |
| KR100367478B1 (en) * | 2000-12-15 | 2003-01-10 | 김준 | Fabrication Method of Stator Assembly Using Slotless Stator Core on Brushless DC Motor and Brushless DC Motor Thereby |
| JP2002209360A (en) * | 2001-01-12 | 2002-07-26 | Tamagawa Seiki Co Ltd | Ground attaching structure of motor stator |
| JP2002354766A (en) * | 2001-05-28 | 2002-12-06 | Aichi Emerson Electric Co Ltd | Permanent magnet motor |
| JP2003032985A (en) * | 2001-07-12 | 2003-01-31 | Aichi Emerson Electric Co Ltd | Stator of permanent-magnet motor |
| JP2003158835A (en) * | 2001-11-16 | 2003-05-30 | Yaskawa Electric Corp | Rotating electric machine |
| JP2005027387A (en) * | 2003-06-30 | 2005-01-27 | Yaskawa Electric Corp | Stator of ac motor |
| JP2005039911A (en) * | 2003-07-18 | 2005-02-10 | Nippon Steel Corp | Synchronous machine |
| JP2006197779A (en) * | 2005-01-17 | 2006-07-27 | Toyota Motor Corp | Stator of rotary electric machine, and manufacturing method and device thereof |
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