JP3050983B2 - Stator frame of rotating electric machine - Google Patents
Stator frame of rotating electric machineInfo
- Publication number
- JP3050983B2 JP3050983B2 JP4007062A JP706292A JP3050983B2 JP 3050983 B2 JP3050983 B2 JP 3050983B2 JP 4007062 A JP4007062 A JP 4007062A JP 706292 A JP706292 A JP 706292A JP 3050983 B2 JP3050983 B2 JP 3050983B2
- Authority
- JP
- Japan
- Prior art keywords
- stator core
- stator
- stator frame
- peripheral surface
- projection
- 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
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、回転電機の固定子鉄心
を支持する固定子枠に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator frame for supporting a stator core of a rotating electric machine.
【０００２】[0002]
【従来の技術】従来の固定子枠の一般的な形状は、特開
昭５３−１３９１０６に示すように帯状鋼板の長手方向
に所定の間隔をおいて、長辺が幅方向に向いた複数個の
固定子鉄心鉄心嵌合用突起条をプレス等で押出加工し、
この鋼板を上記突起条が内面側にくるように筒状に機械
曲げし該鋼板の両端部を固着する方法。或いは特開昭５
６−１５０９５２に示すように、筒状の結果的に固定子
鉄心が嵌合固着される中央部をバルジ成形により成形す
るものにおいて、前記筒状体の少なくとも固定子鉄心を
嵌入する側の前記中央部に連なる開口端部の径を結果的
に前記中央部に形成される径以上に成形し、その後前記
中央部をバルジ成形して成る回転電機の固定子枠等があ
る。2. Description of the Related Art As shown in Japanese Patent Application Laid-Open No. 53-139106, the general shape of a conventional stator frame is a plurality of strips having long sides oriented in the width direction at predetermined intervals in the longitudinal direction of a strip-shaped steel sheet. Extrusion processing of the stator core of the core
A method in which the steel plate is mechanically bent into a cylindrical shape so that the protrusions are on the inner surface side, and both ends of the steel plate are fixed. Or, JP
As shown in FIG. 6-150952, in the case where a cylindrical central part to which the stator core is fitted and fixed is formed by bulge molding, the center of the cylindrical body at least on the side where the stator core is inserted is formed. There is a stator frame or the like of a rotary electric machine formed by forming the diameter of an opening end portion connected to a portion to be larger than the diameter formed in the center portion as a result, and then forming the center portion by bulge forming.
【０００３】[0003]
【発明が解決しようとする課題】従来の固定子枠におい
ては、特開昭５３−１３９１０６の場合の固定子鉄心を
支持する突起の成形と、特開昭５６−１５０９５２の場
合の固定子鉄心を嵌合固着させる中央部の成形は、いず
れも塑性加工による成形であるため固定子枠素材のスプ
リングバック等により成形後の固定子鉄心を支持する部
分の寸法精度が悪く、固定子鉄心と固定子枠が完全に密
着しないという欠点があった。また、この寸法精度の欠
点を解消するため、固定子枠成形後に固定子鉄心を支持
する部分のみ機械加工しなければならないという欠点も
あった。本発明は以上のような欠点を解消するもので、
固定子枠の突起部の機械加工をなくし鉄心と固定子枠と
の密着を良くすることを目的とする。In a conventional stator frame, a projection for supporting a stator core in Japanese Patent Application Laid-Open No. 53-139106 and a stator core in Japanese Patent Application Laid-Open No. 56-150952 are formed. The molding of the central part to be fitted and fixed is all performed by plastic working, so the dimensional accuracy of the part supporting the stator core after molding is poor due to spring back of the stator frame material, etc., and the stator core and stator There was a disadvantage that the frame did not completely adhere. In addition, in order to eliminate the drawback of the dimensional accuracy, there is also a drawback that, after forming the stator frame, only the portion supporting the stator core has to be machined. The present invention solves the above disadvantages,
An object of the present invention is to improve the close contact between the iron core and the stator frame by eliminating machining of the protrusions of the stator frame.
【０００４】[0004]
【課題を解決するための手段】鋼板製で円筒状に成形さ
れ該円筒部に筒方向へ延び径心方向に突出成形して成る
該円筒部と略同肉厚の突起を円周方向に複数個有し、こ
の突起の内周面で固定子鉄心を支持する回転電機の固定
子枠で、前記固定子鉄心とは非接触となる突起の外周面
の中央部に、薄肉となる凹部が該突起の長手方向に形成
されたことを特徴とする回転電機の固定子枠である。[MEANS FOR SOLVING THE PROBLEMS] It is made of a steel plate and formed into a cylindrical shape.
Formed in the cylindrical portion by extending in the cylindrical direction and projecting in the radial direction.
A plurality of cylindrical portion substantially projecting in the same wall thickness in the circumferential direction, this
Of the rotating electric machine supporting the stator core with the inner peripheral surface of the protrusion
The outer peripheral surface of the protrusion that is not in contact with the stator core in the child frame
A thin concave portion is formed in the center of the projection in the longitudinal direction of the projection.
A stator frame of a rotating electric machine characterized by being performed .
【０００５】[0005]
【作用】突起の外周面に設けられた凹部（凹形状）は、
突起成形と同時に金型により成形加工され、この凹部成
形に伴う加工応力によって該凹部の背面位置である突起
の内周面（固定子鉄心との接触面）の中央部には凸部
（凸形状）が、該突起の長手方向に前記凹部と略同長さ
で突出（固定子鉄心側へ線状となって突出）形成され
る。固定子枠はこれらの凹部と凸部を持った突起を有し
ている。この固定子枠に固定子鉄心を圧入すると、突起
の内周面では凸部が固定子鉄心と接触状態にあって、こ
の凸部は線条であるから固定子鉄心と凸部は線接触状態
になっている。即ち、固定子鉄心と突起の内周面とは面
接触でなく凸部を介して線接触であるから、凸部は加圧
されて該凸部の背面位置である凹部近辺から容易に外周
面側に凹んで行く。しかも、凸部は突起の中央部に形成
されていることから、突起の内周面は中央部から外周面
側に凹み（変形）を開始して、形状も固定子鉄心外周と
略同一の円弧形状になり密着が良くなる。The concave portion (concave shape) provided on the outer peripheral surface of the projection is
Pultrusion and is molded by a die at the same time, a rear position of the concave portion by machining stress caused by the recess forming projections
At the center of the inner peripheral surface (contact surface with the stator core)
(Convex shape) has substantially the same length as the recess in the longitudinal direction of the projection.
(Protruding linearly toward the stator core)
You . The stator frame has projections with these recesses and projections
Have . Press-fitting the stator core to the stator frame Then, projections
Projections in the inner circumferential surface is in a contact with the stator core, this
Are convex, so the stator core and the convex are in line contact.
It has become . That is , the stator core and the inner peripheral surface of the projection
Since the contact is not a contact but a line contact via the protrusion , the protrusion is pressurized
From the vicinity of the concave portion, which is the back position of the convex portion.
Go down to the surface side . Moreover , the protrusion is formed at the center of the protrusion
Since it was, the outer circumferential surface the inner peripheral surface of the projection from the central part
The dent (deformation) starts on the side and the shape is
It has substantially the same circular arc shape, and adhesion is improved .
【０００６】[0006]
【実施例】次に本発明の一実施例を図１乃至図６を参照
して説明する。図１は本発明の一実施例を示す固定子枠
の正面図、図２は図１の断面図、図３は固定子枠の素材
となる鋼管の正面図、図４は図３の側面図、図５は図２
の突起部分を拡大した詳細図、図６は固定子枠に固定子
鉄心を圧入した時の突起部の詳細図である。Next, an embodiment of the present invention will be described with reference to FIGS. 1 is a front view of a stator frame showing one embodiment of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, FIG. 3 is a front view of a steel pipe used as a material of the stator frame, and FIG. 4 is a side view of FIG. FIG. 5 shows FIG.
And FIG. 6 is a detailed view of the protrusion when the stator core is pressed into the stator frame.
【０００７】図において、鉄パイプを所定の寸法に切
断、又は鋼板を巻いて筒状にし合せ目を溶接して形成し
た鋼管１の胴部に、該鋼管１の長手方向に突出し且つ該
鋼管１と略同肉厚の突起４を、径心方向に向って内面側
２に突出し円周方向へ複数個形成している。突起４の外
周面６は固定子鉄心３の外周１０と非接触で、この外周
面６の中央部には薄肉となる凹形状７（以下、凹部）
が、突起４の長手方向に直線上に延びて形成されてい
る。一方、固定子鉄心３の外周１０と接触する突起４の
接触面５（以下、内周面）には、前記凹部７形成に伴い
該凹部７の背面位置となる中央部に、凸形状９（以下、
凸部）が凹部７と同様に突起４の長手方向に直線上に延
びて形成される。この内周面５には凸部９が外周面６に
は凹部７が夫々形成されて成る突起４を、複数個（図２
では６箇所）有した鋼板製の固定子枠８が形成される。[0007] In view, cutting iron pipe into a predetermined size, or steel sheet body of the steel pipe 1 formed by welding a seam on the tubular by winding, and protrudes in the longitudinal direction of the steel pipe 1 the
A plurality of projections 4 having substantially the same thickness as the steel pipe 1 are formed in the circumferential direction so as to protrude toward the inner surface 2 in the radial direction . Outside of projection 4
Circumferential surface 6 in a non-contact with the outer periphery 10 of the stator core 3, the outer periphery
In the center of the surface 6, a concave shape 7 (hereinafter referred to as a concave portion) which becomes thin
But it is formed to extend in a straight line in the longitudinal direction of the projection 4
You . On the other hand , the protrusion 4 that contacts the outer periphery 10 of the stator core 3
On the contact surface 5 (hereinafter referred to as the inner peripheral surface), the concave portion 7 is formed.
A convex shape 9 (hereinafter, referred to as a central portion) which is a rear position of the concave portion 7 is provided .
Convex portion) extends linearly in the longitudinal direction of the protrusion 4 like the concave portion 7.
Formed . The inner peripheral surface 5 has a projection 9 on the outer peripheral surface 6.
Indicates a plurality of projections 4 each having a recess 7 formed therein (FIG. 2).
In this case, a stator frame 8 made of steel plate having six portions is formed.
【０００８】鋼管１には、いずれも図示しない金型とプ
レスを使用して、所定位置に６箇所の突起４を鋼管１の
内面側２に押出し成形する。この時、同時に突起４の外
周面６の中央部に、該突起４の長手方向へ直線上に延び
る凹部７を成形することにより、凹部７が形成された部
分の肉厚が薄くなる。このようにして固定子枠８の突起
４成形が完了し、図示しない金型より取り出した突起４
の内周面５には、凹部７の成形時の加工応力によって該
凹部７の背面位置となる中央部に凸部９が、凹部７と同
様に突起４の長手方向に直線上に延びて形成される。In the steel pipe 1, six projections 4 are extruded at predetermined positions on the inner surface 2 of the steel pipe 1 by using a mold and a press (not shown). At this time, simultaneously central portion in the outer peripheral surface 6 of the protrusion 4, extends in a straight line in the longitudinal direction of the projection 4
The recess 7 is formed by molding the recess 7
The wall thickness becomes thinner . In this manner, the molding of the projections 4 of the stator frame 8 is completed, and the projections 4 taken out from the mold (not shown)
Is formed on the inner peripheral surface 5 by the processing stress when the concave portion 7 is formed.
Protrusions 9 in the central portion of the rear position of the recess 7, the recess 7 the
As described above, the protrusion 4 is formed to extend linearly in the longitudinal direction .
【０００９】図示しない金型から取り出した固定子枠８
の寸法ｄ1 は、固定子鉄心３の寸法ｄ0 に対してｄ1 ＝
（ｄ0 −α）となるように成形されている。この時、α
は圧入代である。又、突起４の凸部９の最大寸法ｄ2
は、ｄ2 ＜ｄ1 となる。Stator frame 8 taken out of a mold (not shown)
Of the stator core 3 is d1 =
(D0 -α) . At this time, α
Is a press fit. Also, the maximum dimension d2 of the projection 9 of the projection 4
Is d2 <d1 .
【００１０】この固定子枠８に固定子鉄心３を圧入する
と、突起４の内周面５では凸部９が固定子鉄心３と接触
状態にあって、この凸部９は線状であるから固定子鉄心
３と凸部９は線接触状態になっている。即ち、固定子鉄
心３と突起４の内周面５とは面接触でなく凸部９を介し
て線接触であるから、凸部９は加圧されて該凸部９の背
面位置である凹部７近辺から容易に外周面６側に凹んで
行く。しかも、凸部９は突起４の中央部に形成されてい
ることから、突起４の内周面５は中央部から外周面６側
に凹み（変形）を開始して、形状も固定子鉄心３の外周
１０と略同一形状の円弧形状になり密着が良くなる。こ
のように固定子鉄心３の外周１０と密着性が良くなる固
定子枠８が得られる。When the stator core 3 is press-fitted into the stator frame 8, the protrusion 9 on the inner peripheral surface 5 of the projection 4 comes into contact with the stator core 3.
In this state, since the projections 9 are linear, the stator core
3 and the projection 9 are in line contact with each other . That is , stator iron
The core 3 and the inner peripheral surface 5 of the projection 4 do not come into surface contact with each other but through a convex portion 9.
Because of the line contact , the convex portion 9 is pressurized and the back of the convex portion 9 is pressed.
Easily recessed from the vicinity of the concave portion 7 which is the surface position to the outer peripheral surface 6 side
Go . Moreover , the projection 9 is formed at the center of the projection 4.
Therefore , the inner peripheral surface 5 of the projection 4 is closer to the outer peripheral surface 6 from the center.
Dent (deformation) starts and the shape is the outer circumference of the stator core 3
An arc shape substantially the same as that of 10 is obtained, and the adhesion is improved . This
Thus, the stator frame 8 having good adhesion to the outer periphery 10 of the stator core 3 is obtained.
【００１１】[0011]
【発明の効果】以上本発明の固定子枠によれば、突起の
固定子鉄心との非接触面中央部に設けた凹部成形時の加
工応力によって、突起の固定子鉄心との接触面中央部に
形成された凸部が、圧入時の固定子鉄心外周とは線接触
状態にあるので凹み易いと共に該凸部が中央部に形成さ
れているので、固定子枠の内周面（固定子鉄心外周との
接触面）は固定子鉄心外周と略同一形状の密着性が良く
なる円弧形状に成形される。又、固定子鉄心と固定子枠
は密着が良好な為に、内周面（接触面）の機械加工は不
要となる。As described above, according to the stator frame of the present invention, when the recess is formed at the center of the non-contact surface of the projection with the stator core, the process is performed.
In the center of the contact surface of the projection with the stator core
The formed protrusions are in line contact with the outer circumference of the stator core during press-fitting.
It is easy to dent because it is in the state, and the convex part is formed in the central part.
Since the inner peripheral surface of the stator frame (the stator core outer circumference
The contact surface) has almost the same shape as the outer circumference of the stator core and has good adhesion.
It is formed into an arc shape . In addition, since the stator core and the stator frame have good adhesion, machining of the inner peripheral surface (contact surface) becomes unnecessary.
【図１】本発明の一実施例を示す固定子枠の正面図、FIG. 1 is a front view of a stator frame showing one embodiment of the present invention,
【図２】図１の断面図、FIG. 2 is a sectional view of FIG. 1,
【図３】固定子枠の素材となる鋼管の正面図、FIG. 3 is a front view of a steel pipe as a material of a stator frame,
【図４】図３の側面図、FIG. 4 is a side view of FIG. 3;
【図５】図２の突起部分を拡大した詳細図、FIG. 5 is an enlarged detail view of a protruding portion of FIG. 2,
【図６】固定子枠に固定子鉄心を圧入した時の突起部の
詳細図。FIG. 6 is a detailed view of a projection when a stator core is pressed into a stator frame.
３…固定子鉄心、 ４…突起、 ５…接触面、
７…凹形状、８…固定子枠、 ９…凸形状、 １０
…外周。3 ... stator core, 4 ... protrusion, 5 ... contact surface,
7: concave shape, 8: stator frame, 9: convex shape, 10
... outer circumference.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02K 5/04 H02K 1/18 H02K 15/02 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) H02K 5/04 H02K 1/18 H02K 15/02
Claims (1)
方向へ延び径心方向に突出成形して成る該円筒部と略同
肉厚の突起を円周方向に複数個有し、この突起の内周面
で固定子鉄心を支持する回転電機の固定子枠において、
前記固定子鉄心とは非接触となる突起の外周面の中央部
に、薄肉となる凹部が該突起の長手方向に形成されたこ
とを特徴とする回転電機の固定子枠。A cylindrical member formed of a steel plate and having a cylindrical shape;
And substantially the same as the cylindrical portion formed by molding in the radial direction.
It has a plurality of thick protrusions in the circumferential direction, and the inner peripheral surface of the protrusions
In the stator frame of the rotating electric machine supporting the stator core with
The central part of the outer peripheral surface of the protrusion that is not in contact with the stator core
, The stator frame of a rotary electric machine, wherein this <br/> and the recess to serve as the thin is formed in the longitudinal direction of the protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4007062A JP3050983B2 (en) | 1992-01-20 | 1992-01-20 | Stator frame of rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4007062A JP3050983B2 (en) | 1992-01-20 | 1992-01-20 | Stator frame of rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05199695A JPH05199695A (en) | 1993-08-06 |
| JP3050983B2 true JP3050983B2 (en) | 2000-06-12 |
Family
ID=11655585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4007062A Expired - Fee Related JP3050983B2 (en) | 1992-01-20 | 1992-01-20 | Stator frame of rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3050983B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4572699B2 (en) * | 2005-02-23 | 2010-11-04 | トヨタ自動車株式会社 | Fixed structure of rotating electric machine |
| DE102007033076A1 (en) | 2007-07-13 | 2009-01-15 | Dr. Fritz Faulhaber Gmbh & Co. Kg | Electric miniature drive and return element and method for its production |
| US8669686B2 (en) | 2009-10-09 | 2014-03-11 | Toyota Jidosha Kabushiki Kaisha | Rotor and method of manufacturing the rotor |
| CN102122868B (en) * | 2010-01-08 | 2016-06-29 | 思博莫顿股份公司 | Motor stator and manufacture method thereof |
| JP2012161237A (en) * | 2011-01-11 | 2012-08-23 | Denso Corp | Stator of rotary electric machine and manufacturing method of the same |
-
1992
- 1992-01-20 JP JP4007062A patent/JP3050983B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05199695A (en) | 1993-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |