JP2945037B2 - Small rotating electric machine - Google Patents
Small rotating electric machineInfo
- Publication number
- JP2945037B2 JP2945037B2 JP25202189A JP25202189A JP2945037B2 JP 2945037 B2 JP2945037 B2 JP 2945037B2 JP 25202189 A JP25202189 A JP 25202189A JP 25202189 A JP25202189 A JP 25202189A JP 2945037 B2 JP2945037 B2 JP 2945037B2
- Authority
- JP
- Japan
- Prior art keywords
- case
- forms
- degrees
- rotating electric
- respect
- 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)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明はPM型ステッピングモータ，シンクロナスモー
タ等の小型回転電機の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to improvements in small rotating electric machines such as PM type stepping motors and synchronous motors.
［従来の技術］ 従来のこの種小型回転電機は、第９図に示すように，
円環状鉄板の内周側の複数個所に歯部を突起させて作成
した磁極板2,2′の２つを重ねて配置し，第1,第２の２
つの励磁巻線4,4′で励磁することで各歯部が交互にN,S
に磁化されるものを固定子としてケース１内に取り付
け，この固定子の極数と同一の極数に磁化されたマグネ
ット回転子６を一体的に取り付けた回転軸７を上記ケー
ス軸受５により支承した小型回転電機において，ケース
1,第１の励磁巻線4.2つの磁極板2,2′，第２の励磁巻線
4,マグネット回転子６を回転自在に軸受５を介して支承
するケース前蓋３の夫々の外周側に少なくとも１つの溝
または突起を設けておき，これらの溝または突起を基準
として位置決めしながら上記順序に一方方向に押すこと
で組立が完了しかつ磁極の関係位置が所定配置となるよ
うに構成されていた。[Prior Art] As shown in FIG.
The two magnetic pole plates 2, 2 'formed by projecting the teeth at a plurality of locations on the inner peripheral side of the annular iron plate are superposed and arranged.
Excitation by the two excitation windings 4, 4 'causes each tooth to alternately become N, S
A rotating shaft 7 integrally mounted with a magnet rotor 6 magnetized to the same number of poles as the stator is mounted on the case bearing 5 as a stator. Case of a small rotating electric machine
1, first excitation winding 4.2 two pole plates 2, 2 ', second excitation winding
4. At least one groove or projection is provided on the outer peripheral side of each of the case front lids 3 which rotatably supports the magnet rotor 6 via the bearing 5, and the above-described positioning is performed with reference to these grooves or projections. By pressing in one direction in order, the assembly is completed and the related positions of the magnetic poles are arranged in a predetermined arrangement.
なお,8は充填された樹脂である。 Reference numeral 8 denotes a filled resin.
［発明が解決しようとする課題］ 従来のこの種小型回転電機は上記のように固定子磁極
を板金より切り起すため，スプリングバッグの影響を受
けて曲がり，エアギャップの精度が出しにくいという欠
点があった。[Problems to be Solved by the Invention] This type of conventional small rotating electric machine has a disadvantage that the stator magnetic poles are cut and raised from the sheet metal as described above, so that they are bent under the influence of the spring bag, and the accuracy of the air gap is hardly obtained. there were.
また，切り起こす長さと径の関係から長手方向（軸方
向）の寸法が制約され，細長タイプのモータを製作し難
いという欠点もあった。Further, there is a drawback that the dimension in the longitudinal direction (axial direction) is restricted due to the relationship between the length and the diameter of the cut and raised portion, and it is difficult to manufacture an elongated type motor.
［課題を解決するための手段］ 本発明の小型回転電機は，ヨークなる円筒状のケース
の内周に，巻線を巻いた複数の短冊状の磁極鉄板をケー
スの内周から中心に向けて放射状に同一内径となるよう
に配置し，巻線及び磁極鉄板をケースの内側に充填され
た樹脂により固定して固定子を構成し、磁極鉄板により
囲まれた内径部に空隙を有して回転自在に回転子を配置
した小型回転電機において， 円筒状のケースに，該ケースの軸方向に延び，ケース
の軸方向の長さより短い切り込み溝が８本形成され， これらの切り込み溝の周方向の位置関係は，特定の基
準位置A,該基準位置Ａより反時計回りに所定の角度ピッ
チＰとなる位置Ａ′，基準位置Ａより時計回りに角度ピ
ッチP/2となる位置B,該位置Ｂより時計回りに角度ピッ
チＰとなる位置Ｂ′，基準位置Ａに対して180度をなす
位置Ａ″，位置Ｂに対して180度をなす位置Ｂ″，位置
Ａ′に対して180度をなす位置Ａ，位置Ｂ′に対して1
80度をなす位置Ｂにより表され， 切り込み溝のそれぞれに、磁極鉄板がその一端を嵌入
させて放射状に配置され， 基準位置Ａと位置Ｂとの間，位置Ａ″と位置Ｂ″との
間，位置Ａ′と位置Ｂとの間，位置Ｂ′と位置Ａと
の間にそれぞれに，ケースの軸方向に延び，ケースの軸
方向の長さより短い相分割用の分割溝が形成されている
ように構成した。[Means for Solving the Problems] In the small rotating electric machine of the present invention, a plurality of strip-shaped magnetic pole iron plates with windings are wound around the inner periphery of a cylindrical case serving as a yoke from the inner periphery of the case to the center. Radiators are arranged so as to have the same inner diameter, and the stator is constructed by fixing the windings and the magnetic pole iron plate with resin filled inside the case, and rotating with an air gap in the inner diameter part surrounded by the magnetic pole iron plate In a small rotating electric machine in which a rotor is freely disposed, a cylindrical case is formed with eight cut grooves extending in the axial direction of the case and shorter than the axial length of the case. The positional relationship is a specific reference position A, a position A 'having a predetermined angular pitch P counterclockwise from the reference position A, a position B having an angular pitch P / 2 clockwise from the reference position A, and the position B. The position B ', which is the angle pitch P more clockwise, Position A "which forms 180 degrees with respect to sub position A, position B" which forms 180 degrees with position B, position A which forms 180 degrees with position A ', and 1 with respect to position B'
A pole iron plate is radially arranged in each of the cut grooves, with one end of the pole iron plate fitted therein, between the reference position A and the position B, and between the position A ″ and the position B ″. , And between the position A 'and the position B, and between the position B' and the position A, there are formed dividing grooves for phase division which extend in the axial direction of the case and are shorter than the axial length of the case. It was configured as follows.
［実施例］ 以下第１図〜第８図に示す一実施例に基き本発明を具
体的に説明する。Embodiment The present invention will be specifically described below based on an embodiment shown in FIGS. 1 to 8.
第１図〜第２図において，９は固定子磁極で，これは
第３図に示すように，鉄板から打ち抜いた短冊状の固定
子磁極鉄板9a1,9a2,9a3,・・・9a8を放射状に同一内径
に配置して構成する。In Figure 1-Fig. 2, 9 in the stator magnetic pole, which as shown in FIG. 3, strip-shaped stator poles iron plate 9a punched from steel plate 1, 9a 2, 9a 3, · · · 9a 8 are arranged radially at the same inner diameter.
10はヨークとなる円筒状のケースで，第４図に示すよ
うに磁極鉄板9a1〜9a8を嵌入するための軸方向の適当長
さに亙る切り込み溝10a1〜10a8と後述する分割溝12a1〜
12a4を形成するように鉄板を打抜いて製作する。10 is a cylindrical case formed with the yoke, the dividing groove to be described later grooves 10a 1 10 A 8 cuts over the axial direction of the appropriate length for fitting the magnetic pole iron plate 9a 1 ~9a 8 as shown in FIG. 4 12a 1 〜
Manufactured by punching a steel plate to form the 12a 4.
11は夫々巻線で，これらの巻線11は第５図（イ）に示
す空芯コイル３又は同図（ロ）に示すホビン巻コイルあ
るいは同図（ハ）に示す鉄芯直巻の場合などの各種態様
が考えられる。Numerals 11 denote windings, respectively. These windings 11 are the air-core coil 3 shown in FIG. 5 (a), the hobbin wound coil shown in FIG. 5 (b), or the iron core series shown in FIG. 5 (c). Various modes such as are conceivable.
各巻線11は第１図及び第６図に示すようにケース10内
にあって各磁極鉄板9a1〜9a8に対してＡ相,B相の巻線を
同一内径内に配置するようにして，また，異極となるＡ
極群とＢ極群の巻線は第６図に示すように1/2極ピッチ
ずらして配置するようにしている。Each winding 11 so as to place the A-phase, the windings of phase B in the same inner diameter with respect to FIG. 1 and 6 each pole iron plate 9a 1 ~9a 8 In the case 10 as shown in FIG. , Again A
The windings of the pole group and the B pole group are arranged so as to be shifted by 1/2 pole pitch as shown in FIG.
なお、12a1〜12a4はA,B各相を分割するための分割溝
である。Incidentally, 12a 1 ~12a 4 is a dividing grooves for division A, B phases.
これらの切り込み溝，及び分割溝の円周上の配置を第
６図にしたがって説明する。The arrangement of these cut grooves and division grooves on the circumference will be described with reference to FIG.
まず，切り込み溝の周方向の位置関係は，特定の基準
位置A,該基準位置Ａより反時計回りに所定の角度ピッチ
Ｐとなる位置Ａ′，基準位置Ａより時計回りに角度ピッ
チP/2となる位置B,該位置Ｂより時計回りに角度ピッチ
Ｐとなる位置Ｂ′，基準位置Ａに対して180度をなす位
置Ａ″，位置Ｂに対して180度をなす位置Ｂ″，位置
Ａ′に対して180度をなす位置Ａ，位置Ｂ′に対して1
80度をなす位置Ｂにより表される。First, the positional relationship in the circumferential direction of the notch groove is defined as a specific reference position A, a position A 'having a predetermined angular pitch P counterclockwise from the reference position A, and an angular pitch P / 2 clockwise from the reference position A. B, a position B 'which forms an angle pitch P clockwise from the position B, a position A "which forms 180 degrees with respect to the reference position A, a position B" which forms 180 degrees with respect to position B, and a position A Position A at 180 degrees to position B, 1 position to position B '
It is represented by position B at 80 degrees.
また，分割溝12a3は基準位置Ａと位置Ｂとの間，分割
溝12a1は位置Ａ″と位置Ｂ″との間，分割溝12a2は位置
Ａ′と位置Ｂとの間，分割溝12a4は位置Ｂ′と位置Ａ
との間にそれぞれ形成されている。Further, the dividing groove 12a3 is between the reference position A and the position B, the dividing groove 12a1 is between the position A "and the position B", the dividing groove 12a2 is between the position A 'and the position B, and the dividing groove 12a4 is the position. B 'and position A
And are formed between them.
これらの切り込み溝，分割溝は，第４図に示されるよ
うに，いずれもケース10の軸方向に延び，ケース10の軸
方向の長さより短い長さで形成されている。As shown in FIG. 4, these cut grooves and split grooves each extend in the axial direction of the case 10 and have a length shorter than the axial length of the case 10.
固定子巻線となる上記各巻線11の固定は，第７図に示
すように位置決め治具13a1,13a2を使い，第１図に示す
ようにインサートモールド樹脂等の14a1,14a2を充填す
ることにより行うものとする。As shown in FIG. 7, the respective windings 11 serving as stator windings are fixed using positioning jigs 13a 1 and 13a 2, and 14a 1 and 14a 2 made of insert mold resin or the like as shown in FIG. It shall be performed by filling.
15は回転子,16は回転子軸である。 15 is a rotor and 16 is a rotor shaft.
17及び17′は夫々軸受,18及び18′は夫々止め輪,19及
び19′は夫々カンザである。17 and 17 'are bearings, 18 and 18' are retaining rings, and 19 and 19 'are Kansa, respectively.
［作用］ 本発明の小型回転電機は上記のように固定子磁極は短
冊状の鉄板を板金から打ち抜き，切断して固定子ケース
に対して嵌入するようにして構成するようにしているた
め，強度があり，固定子の剛性もあり，分割精度，ギャ
ップ精度が向上させることができる。[Operation] The small rotating electric machine according to the present invention is configured such that the stator magnetic poles are formed by punching a strip-shaped iron plate from a sheet metal and cutting and inserting the iron plate into the stator case as described above. And the rigidity of the stator, so that the division accuracy and gap accuracy can be improved.
また，固定子磁極は細長くすることができるので，従
来のものでは無理であった細長タイプのモータの製作も
可能となった。In addition, since the stator poles can be made slender, it has become possible to manufacture slender motors that were not possible with conventional motors.
［発明の効果］ 本発明の小型回転電機は上記のように固定子磁極は短
冊状の鉄板を板金から打ち抜き，切断して固定子ケース
に対して嵌入するようにして構成されるので，次のよう
な優れた効果を有する。[Effect of the Invention] As described above, the small rotating electric machine of the present invention is configured such that the stator magnetic poles are formed by punching a strip-shaped iron plate from a sheet metal, cutting the same, and fitting the same into the stator case. It has such excellent effects.
固定子の分割精度，エアギャップ精度が向上できる。The stator division accuracy and air gap accuracy can be improved.
固定子磁極を細長くできるので,PMモータに対して
も，また，積層鉄心型のものに対しても容易に細長タイ
プのモータの製作が可能となった。Since the stator poles can be made elongated, it has become possible to easily manufacture slender motors for both PM motors and laminated iron core motors.
従来のPMモータに比べて磁気回路の鉄心の厚みが大き
く取れるんで，高出力とできる。Compared to conventional PM motors, the thickness of the iron core of the magnetic circuit can be increased, resulting in higher output.
構成上，極数が少ないものに適し，その点から高速，
高トルクのモータに好適である。In terms of configuration, it is suitable for those with a small number of poles.
Suitable for high torque motors.
構造が簡単のため,PM型ステッピングモータ等の小型
回転電機用に好適である。Because of its simple structure, it is suitable for small rotating electric machines such as PM stepping motors.
第１図〜第８図は本発明の一実施例を示すもので，その
内，第１図は本発明の小型回転電機全体の構造の縦断側
面図，第２図は第１図のＹ−Ｙ′線における断面図，第
３図は固定子磁極鉄板の斜視図，第４図は固定子ケース
の斜視図，第５図（イ）〜（ハ）は固定子巻線の斜視
図，第６図は固定子側の概略構成図，第７図は固定子巻
線の取付方法を示す部分断面図，第８図は回転子の斜視
図である。 また，第９図は従来例の縦断正面図である。９ ：固定子磁極 9a1〜9a8:磁極鉄板 10:固定子ケース 10a1〜10a8:切り込み溝 11:巻線 12a1〜12a4:分割溝 13a1,13a2:位置決め治具 14a1,14a2:充填された樹脂1 to 8 show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional side view of the entire structure of the small rotating electric machine of the present invention, and FIG. 3 is a perspective view of a stator magnetic pole iron plate, FIG. 4 is a perspective view of a stator case, FIGS. 5A to 5C are perspective views of a stator winding, and FIG. FIG. 6 is a schematic configuration diagram on the stator side, FIG. 7 is a partial sectional view showing a method of attaching the stator windings, and FIG. 8 is a perspective view of the rotor. FIG. 9 is a longitudinal sectional front view of a conventional example. 9 : Stator poles 9a 1 to 9a 8 : Magnetic pole iron plate 10: Stator case 10a 1 to 10a 8 : Cut groove 11: Winding 12a 1 to 12a 4 : Split groove 13a 1 , 13a 2 : Positioning jig 14a 1 , 14a 2 : Filled resin
Claims (1)
線を巻いた複数の短冊状の磁極鉄板を前記ケースの内周
から中心に向けて放射状に同一内径となるように配置
し，前記巻線及び前記磁極鉄板を前記ケースの内側に充
填された樹脂により固定して固定子を構成し，前記磁極
鉄板により囲まれた内径部に空隙を有して回転自在に回
転子を配置した小型回転電機において， 前記円筒状のケースに，該ケースの軸方向に延び，ケー
スの軸方向の長さより短い切り込み溝が８本形成され，
これらの切り込み溝の周方向の位置関係は，特定の基準
位置A,該基準位置Ａより反時計回りに所定の角度ピッチ
Ｐとなる位置Ａ′，前記基準位置Ａより時計回りに角度
ピッチP/2となる位置B,該位置Ｂより時計回りに角度ピ
ッチＰとなる位置Ｂ′，前記基準位置Ａに対して180度
をなす位置Ａ″，前記位置Ｂに対して180度をなす位置
Ｂ″，前記位置Ａ′に対して180度をなす位置Ａ，前
記位置Ｂ′に対して180度をなす位置Ｂにより表さ
れ，前記切り込み溝のそれぞれに，前記磁極鉄板がその
一端を嵌入させて放射状に配置され，前記基準位置Ａと
位置Ｂとの間，前記位置Ａ″と位置Ｂ″との間，前記位
置Ａ′と位置Ｂとの間，前記位置Ｂ′と位置Ａとの
間のそれぞれに，前記ケースの軸方向に延び，ケースの
軸方向の長さより短い相分割用の分割溝が形成されてい
ることを特徴とする小型回転電機。1. A plurality of strip-shaped pole iron plates wound with windings are arranged radially from the inner periphery of the case to the center so as to have the same inner diameter on the inner periphery of a cylindrical case serving as a yoke. The stator is constructed by fixing the winding and the magnetic pole iron plate with a resin filled inside the case, and the rotor is rotatably disposed with a gap in an inner diameter portion surrounded by the magnetic pole iron plate. In the small rotating electric machine, eight notches are formed in the cylindrical case and extend in the axial direction of the case and are shorter than the axial length of the case.
The circumferential positional relationship of these notches is defined as a specific reference position A, a position A 'having a predetermined angular pitch P counterclockwise from the reference position A, and an angular pitch P / C from the reference position A clockwise. 2, a position B 'which forms an angle pitch P clockwise from the position B, a position A "which forms 180 degrees with respect to the reference position A, and a position B" which forms 180 degrees with respect to the position B , And a position B which forms 180 degrees with respect to the position A 'and a position B which forms 180 degrees with respect to the position B'. And between the reference position A and the position B, between the position A "and the position B", between the position A 'and the position B, and between the position B' and the position A, respectively. In addition, a dividing groove extending in the axial direction of the case and shorter than the axial length of the case is provided. A small rotating electric machine characterized by being formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25202189A JP2945037B2 (en) | 1989-09-29 | 1989-09-29 | Small rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25202189A JP2945037B2 (en) | 1989-09-29 | 1989-09-29 | Small rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03117358A JPH03117358A (en) | 1991-05-20 |
| JP2945037B2 true JP2945037B2 (en) | 1999-09-06 |
Family
ID=17231484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25202189A Expired - Fee Related JP2945037B2 (en) | 1989-09-29 | 1989-09-29 | Small rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2945037B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100565219B1 (en) * | 2003-09-30 | 2006-03-30 | 엘지전자 주식회사 | Free magnet type induction motor |
| JP2005269831A (en) * | 2004-03-19 | 2005-09-29 | Nidec Shibaura Corp | Brushless dc motor |
| DE102009001588A1 (en) * | 2009-03-17 | 2010-09-23 | Hilti Aktiengesellschaft | Stator for an electrodynamic machine |
-
1989
- 1989-09-29 JP JP25202189A patent/JP2945037B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03117358A (en) | 1991-05-20 |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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| LAPS | Cancellation because of no payment of annual fees |