JP2000209794A - Split stator structure - Google Patents

Split stator structure

Info

Publication number
JP2000209794A
JP2000209794A JP11004316A JP431699A JP2000209794A JP 2000209794 A JP2000209794 A JP 2000209794A JP 11004316 A JP11004316 A JP 11004316A JP 431699 A JP431699 A JP 431699A JP 2000209794 A JP2000209794 A JP 2000209794A
Authority
JP
Japan
Prior art keywords
pieces
stator
back yoke
end faces
axial direction
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
Application number
JP11004316A
Other languages
Japanese (ja)
Inventor
Makoto Nakada
誠 中田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tamagawa Seiki Co Ltd
Original Assignee
Tamagawa Seiki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tamagawa Seiki Co Ltd filed Critical Tamagawa Seiki Co Ltd
Priority to JP11004316A priority Critical patent/JP2000209794A/en
Publication of JP2000209794A publication Critical patent/JP2000209794A/en
Pending legal-status Critical Current

Links

Landscapes

  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PROBLEM TO BE SOLVED: To make the press work of a split stator easier so that accuracy may be maintained by making the end faces of back yoke pieces flat in non-radial directions crossing the radial direction of the stator and, in addition, to make the directions of the end faces adjacent to the flat end faces along the axial direction of the stator different from each other. SOLUTION: A ring-like stator 1 having slots 1c is constituted by connecting arcuate back yoke pieces 1A to each other and inwardly projecting salient pole sections 1a are respectively formed on the pieces 1a. The end faces 1b of the pieces 1A are made flat in non-radial directions crossing the radial direction R of the stator 1 and the pieces 1A are laminated upon another along the axial direction. When the pieces 1A are laminated upon another in the directions of the end faces 1b which are equal to the connecting state of the pieces 1A, a sufficient strength can be secured against external forces, because the bond strength of each end face 1b on the outer peripheral surface of the stator 1 is improved. The back yoke pieces 1 are formed in the same shape by laminating the pieces 1 upon another in such a way that each adjacent pieces 1A in the axial direction of the stator 1 are paired and the end faces 1b of the pieces 1A are oriented in the opposite directions by inverting one piece 1A against the other piece 1A by 180 deg..

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、分割ステータ構造
に関し、特に、各バックヨーク片の端面の端面方向をス
テータの半径方向と交差する非半径方向に形成し、軸方
向に積層する各バックヨーク片の端面方向を互いに異な
るようにするための新規な改良に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a split stator structure and, more particularly, to a back yoke in which the end faces of the back yoke pieces are formed in a non-radial direction intersecting the radial direction of the stator and are laminated in the axial direction. The present invention relates to a novel improvement for making the end faces of the pieces different from each other.

【0002】[0002]

【従来の技術】従来、用いられていたこの種の分割ステ
ータ構造としては、図4で示される構成が採用されてき
た。すなわち、図4において符号1で示されるものは輪
状をなすステータであり、このステータ1は複数の弧状
をなすバックヨーク片1Aを互いに接続して構成され、
各バックヨーク片1Aには内方へ突出する突極部1aが
形成されている。前記各バックヨーク片1Aの端面1b
は凹凸状に形成されており、互いに嵌合する状態で接合
されている。この図4のステータ1は平面的に示してい
るが、側面として示すと、各バックヨーク片1Aを軸方
向に積層させることによって所定厚さのステータ1を構
成していた。
2. Description of the Related Art Conventionally, a structure shown in FIG. 4 has been adopted as a split stator structure of this kind which has been used. That is, a stator denoted by reference numeral 1 in FIG. 4 is a ring-shaped stator, and this stator 1 is configured by connecting a plurality of arc-shaped back yoke pieces 1A to each other,
Each back yoke piece 1A is formed with a salient pole portion 1a projecting inward. End surface 1b of each back yoke piece 1A
Are formed in an uneven shape, and are joined in a state where they are fitted to each other. Although the stator 1 of FIG. 4 is shown in a plan view, when shown as a side view, the stator 1 having a predetermined thickness is formed by laminating the back yoke pieces 1A in the axial direction.

【0003】[0003]

【発明が解決しようとする課題】従来の分割ステータ構
造は、以上のように構成されていたため、次のような課
題が存在していた。すなわち、前述の従来構成において
は、大型のモータでバックヨーク片の幅Wが十分に存在
する場合は可能であるが、小型モータで特にバックヨー
ク片の幅Wが2ミリ以下となると、プレスの精度上、端
面に凹凸を形成することが困難であった。
Since the conventional split stator structure is constructed as described above, there are the following problems. That is, in the above-described conventional configuration, it is possible when the width W of the back yoke piece is sufficiently large for a large motor, but when the width W of the back yoke piece is 2 mm or less especially for a small motor, the press Due to the accuracy, it was difficult to form irregularities on the end face.

【0004】本発明は、以上のような課題を解決するた
めになされたもので、特に、各バックヨーク片の端面の
端面方向をステータの半径方向と交差する非半径方向に
形成し、軸方向に積層する各バックヨーク片の端面方向
を互いに異なるようにした分割ステータ構造を提供する
ことを目的とする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in particular, the direction of the end surface of each back yoke piece is formed in a non-radial direction intersecting the radial direction of the stator, and It is an object of the present invention to provide a split stator structure in which the end face directions of the back yoke pieces to be stacked are different from each other.

【0005】[0005]

【課題を解決するための手段】本発明による分割ステー
タ構造は、突極部を有する弧状のバックヨーク片を円状
に接続しかつ軸方向に積層させ複数のスロットを有する
ステータを構成する分割ステータ構造において、前記バ
ックヨーク片の端面を前記ステータの半径方向と交差す
る非半径方向の平面とすると共に、前記ステータの軸方
向に沿って隣接する前記端面の端面方向を異ならせた構
成であり、また、前記端面方向は、前記軸方向における
各バックヨーク片において交互に異なるようにした構成
であり、また、前記各バックヨーク片は全て同一形状で
構成され、前記ステータの軸方向において前記バックヨ
ーク片を隣接するバックヨーク片に対して180度反転
させ、軸方向に沿って積層させる構成である。
According to the present invention, there is provided a split stator structure in which arcuate back yoke pieces having salient pole portions are connected in a circular shape and stacked in the axial direction to form a stator having a plurality of slots. In the structure, the end surface of the back yoke piece is a non-radial plane that intersects the radial direction of the stator, and the end surface directions of the adjacent end surfaces are different along the axial direction of the stator, Further, the end face direction is configured to be alternately different in each of the back yoke pieces in the axial direction, and the respective back yoke pieces are all formed in the same shape, and the back yoke is formed in the axial direction of the stator. In this configuration, the pieces are turned 180 degrees with respect to the adjacent back yoke pieces, and are stacked along the axial direction.

【0006】[0006]

【発明の実施の形態】以下、図面と共に本発明による分
割ステータ構造の好適な実施の形態について説明する。
なお、従来例と同一又は同等部分には同一符号を用いて
説明する。図1において符号1で示されるものは輪状を
なすステータであり、このステータ1は複数の弧状をな
すバックヨーク片1Aを互いに接続してステータ1cを
有するように構成され、各バックヨーク片1Aには内方
へ突出する突極部1aが形成されている。前記各バック
ヨーク片1Aの各端面1bは、ステータ1の半径方向R
と交差する非半径方向の平面で形成されており、各バッ
クヨーク片1Aは軸方向に沿って積層されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a split stator structure according to the present invention will be described below with reference to the drawings.
The same or equivalent parts as those in the conventional example will be described using the same reference numerals. In FIG. 1, a reference numeral 1 denotes a ring-shaped stator, and this stator 1 is configured to have a stator 1c by connecting a plurality of arc-shaped back yoke pieces 1A to each other. Are formed with salient pole portions 1a protruding inward. Each end face 1b of each of the back yoke pieces 1A is in the radial direction R of the stator 1.
The back yoke pieces 1A are stacked along the axial direction.

【0007】前記各端面1bは平面で形成されているた
め、図1の平面図で示されるように各バックヨーク片1
Aの接続状態と同じ向きの端面1bの方向で各バックヨ
ーク片1Aを積層させると、ステータ1の外周面におけ
る各端面1bの線は、図5で示される状態となり、各端
面1bの接着強度を高くしておかないと外方への力に対
して十分な強度を保つことに考慮が必要となる。そのた
め、各バックヨーク片1Aが全て同一形状で形成されて
いるため、図2で示されるように、ステータ1の軸方向
Aに沿って隣接する各バックヨーク片1Aを1対構成で
180度反転させて積層することにより、各端面1bの
端面方向は互いに逆となり、従来のように多段状に積層
させると図3のように軸方向Aに沿って互いに異なる位
置に端面1bの位置が表れて各々端面方向が異なること
になる。前述のように、図2及び図3のように各バック
ヨーク片1Aを積層させることによってステータ1の内
外何れからの力に対しても強度を保つことができる。
Since each of the end faces 1b is formed as a plane, as shown in the plan view of FIG.
When the back yoke pieces 1A are stacked in the direction of the end face 1b in the same direction as the connection state of A, the line of each end face 1b on the outer peripheral surface of the stator 1 becomes the state shown in FIG. 5, and the adhesive strength of each end face 1b If the height is not high, it is necessary to consider maintaining sufficient strength against the outward force. Therefore, since all the back yoke pieces 1A are formed in the same shape, as shown in FIG. 2, each of the back yoke pieces 1A adjacent to each other along the axial direction A of the stator 1 is inverted by 180 degrees in a pair. By stacking the end faces 1b, the end face directions of the end faces 1b are opposite to each other, and when they are stacked in a multi-stage manner as in the related art, the positions of the end faces 1b appear at different positions along the axial direction A as shown in FIG. Each end face direction is different. As described above, by laminating the back yoke pieces 1A as shown in FIGS. 2 and 3, the strength can be maintained against the force from both inside and outside of the stator 1.

【0008】なお、前述の図3のように軸方向において
各バックヨーク片1Aの端面方向を互いに交互に異なる
ように積層させた場合に限らず、図示していないが、1
段おき、2段おきに異なるようにすることもできる。
Although not limited to the case where the end faces of the back yoke pieces 1A are alternately different from each other in the axial direction as shown in FIG.
It can also be different every other stage.

【0009】[0009]

【発明の効果】本発明による分割ステータ構造は、以上
のように構成されているため、次のような効果を得るこ
とができる。すなわち、各バックヨーク片の端面が平面
であるため、バックヨーク片の幅が2ミリ又はそれ以下
となった場合でもプレスにより加工が容易で、精度を保
つことができ、コストダウンも達成できる。また、軸方
向に沿って隣接する各バックヨーク片の端面の端面方向
を互いに異ならせているため、内側及び外側からの力に
対して十分な強度を有することができる。
Since the split stator structure according to the present invention is constructed as described above, the following effects can be obtained. That is, since the end surface of each back yoke piece is flat, even if the width of the back yoke piece becomes 2 mm or less, the processing can be easily performed by pressing, accuracy can be maintained, and cost reduction can be achieved. In addition, since the end faces of the end faces of the back yoke pieces adjacent to each other along the axial direction are different from each other, it is possible to have sufficient strength against forces from inside and outside.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明による分割ステータ構造を示す平面図で
ある。
FIG. 1 is a plan view showing a split stator structure according to the present invention.

【図2】図1の各バックヨーク片の積層を示す要部の斜
視図である。
FIG. 2 is a perspective view of a main part showing the lamination of each back yoke piece of FIG. 1;

【図3】図1の積層状態を示す側面図である。FIG. 3 is a side view showing a stacked state of FIG. 1;

【図4】従来の分割ステータ構造を示す平面図である。FIG. 4 is a plan view showing a conventional split stator structure.

【図5】図4の側面図である。FIG. 5 is a side view of FIG.

【符号の説明】[Explanation of symbols]

1 ステータ 1a 突極部 1A バックヨーク片 1c スロット 1b 端面 R 半径方向 A 軸方向 DESCRIPTION OF SYMBOLS 1 Stator 1a Salient pole part 1A Back yoke piece 1c Slot 1b End face R Radial direction A Axial direction

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 突極部(1a)を有する弧状のバックヨーク
片(1A)を円状に接続しかつ軸方向に積層させ複数のスロ
ット(1c)を有するステータ(1)を構成する分割ステータ
構造において、前記バックヨーク片(1A)の端面(1b)を前
記ステータ(1)の半径方向(R)と交差する非半径方向の平
面とすると共に、前記ステータ(1)の軸方向(A)に沿って
隣接する前記端面(1b)の端面方向を異ならせたことを特
徴とする分割ステータ構造。
An arcuate back yoke piece (1A) having salient poles (1a) is connected in a circular shape and laminated in the axial direction to form a split stator constituting a stator (1) having a plurality of slots (1c). In the structure, the end surface (1b) of the back yoke piece (1A) is a non-radial plane intersecting the radial direction (R) of the stator (1), and the axial direction (A) of the stator (1). Characterized in that the end faces of the end faces (1b) adjacent to each other along the direction are different.
【請求項2】 前記端面方向は、前記軸方向(A)におけ
る各バックヨーク片(1A)において交互に異なるように構
成したことを特徴とする請求項1記載の分割ステータ構
造。
2. The split stator structure according to claim 1, wherein the end face direction is alternately different in each of the back yoke pieces (1A) in the axial direction (A).
【請求項3】 前記各バックヨーク片(1A)は全て同一形
状で構成され、前記ステータ(1)の軸方向(A)において前
記バックヨーク片(1A)を隣接するバックヨーク片(1A)に
対して180度反転させ、軸方向(A)に沿って積層させ
ることを特徴とする請求項1又は2記載の分割ステータ
構造。
3. The back yoke pieces (1A) are all formed in the same shape, and the back yoke pieces (1A) are connected to the adjacent back yoke pieces (1A) in the axial direction (A) of the stator (1). 3. The split stator structure according to claim 1, wherein the split stator structure is inverted by 180 degrees and stacked along the axial direction (A).
JP11004316A 1999-01-11 1999-01-11 Split stator structure Pending JP2000209794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11004316A JP2000209794A (en) 1999-01-11 1999-01-11 Split stator structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11004316A JP2000209794A (en) 1999-01-11 1999-01-11 Split stator structure

Publications (1)

Publication Number Publication Date
JP2000209794A true JP2000209794A (en) 2000-07-28

Family

ID=11581081

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11004316A Pending JP2000209794A (en) 1999-01-11 1999-01-11 Split stator structure

Country Status (1)

Country Link
JP (1) JP2000209794A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008206262A (en) * 2007-02-19 2008-09-04 Mitsui High Tec Inc Laminated core, and manufacturing method therefor
JP2009065833A (en) * 2008-12-26 2009-03-26 Mitsubishi Electric Corp Laminated core and manufacturing method thereof
JP2009065834A (en) * 2008-12-26 2009-03-26 Mitsubishi Electric Corp Laminated core and manufacturing method thereof, and laminated stator and manufacturing method thereof
JP2010193659A (en) * 2009-02-19 2010-09-02 Nippon Steel Corp Rotating electric machine and method for manufacturing the same
CN104776087A (en) * 2015-03-31 2015-07-15 苏州固基电子科技有限公司 Connector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008206262A (en) * 2007-02-19 2008-09-04 Mitsui High Tec Inc Laminated core, and manufacturing method therefor
JP2009065833A (en) * 2008-12-26 2009-03-26 Mitsubishi Electric Corp Laminated core and manufacturing method thereof
JP2009065834A (en) * 2008-12-26 2009-03-26 Mitsubishi Electric Corp Laminated core and manufacturing method thereof, and laminated stator and manufacturing method thereof
JP2010193659A (en) * 2009-02-19 2010-09-02 Nippon Steel Corp Rotating electric machine and method for manufacturing the same
CN104776087A (en) * 2015-03-31 2015-07-15 苏州固基电子科技有限公司 Connector

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