JPH0226259A - Inrevolvable brushless motor - Google Patents
Inrevolvable brushless motorInfo
- Publication number
- JPH0226259A JPH0226259A JP17744888A JP17744888A JPH0226259A JP H0226259 A JPH0226259 A JP H0226259A JP 17744888 A JP17744888 A JP 17744888A JP 17744888 A JP17744888 A JP 17744888A JP H0226259 A JPH0226259 A JP H0226259A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- main body
- stator
- magnetic pole
- coil
- 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
Links
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 9
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000696 magnetic material Substances 0.000 abstract description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Brushless Motors (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、固定子が回転子を外囲する形式の内転型無刷
子電動機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an internal rotor brushless electric motor in which a stator surrounds a rotor.
［従来の技術］
この種の内転型無刷子電動機における固定子Ａは、第４
図乃至第６図の如きものが一般的である。[Prior Art] The stator A in this type of internal rotation type brushless electric motor has a fourth
The ones shown in Figs. 6 to 6 are common.
すなわち固定子Ａは、積層鉄心よりなり、回転子Ｂの外
径より十分大径の外周環部Ｃと、外周環部Ｃの内周面か
ら回転子Ｂの外周面に向けて複数の磁極子り、Ｄ、−を
突出形成し、この磁極子り。That is, the stator A is made of a laminated iron core, and includes an outer ring C having a diameter sufficiently larger than the outer diameter of the rotor B, and a plurality of magnetic pole pieces extending from the inner circumferential surface of the outer ring C toward the outer circumferential surface of the rotor B. , D and - are formed protrudingly, and this magnetic pole is formed.
Ｄ、−の周囲に絶縁部材Ｅを介してコイルＦが巻回され
てなる。また磁極子り、Ｄ、・〜は、中挟の基部Ｄａと
巾広の先端部Ｄｂからなり、上記コイルＦは基部Ｄａに
巻回される。従ってコイルＦの巻回は、固定子への内側
において、隣合う先端部Ｄｂ、Ｄｂ間の隙間からコイル
素線を通過させて行っている。なお、回転子Ｂは、回転
子軸、スリーブ、永久磁石にて構成されている。Ｇは回
転子の位置検出を行うホール素子のような磁気感応素子
である。A coil F is wound around D and - with an insulating member E interposed therebetween. The magnetic pole pieces D, . . . consist of an intermediate base Da and a wide tip Db, and the coil F is wound around the base Da. Therefore, the coil F is wound by passing the coil wire through the gap between the adjacent tips Db, Db, on the inside of the stator. Note that the rotor B is composed of a rotor shaft, a sleeve, and a permanent magnet. G is a magnetically sensitive element such as a Hall element that detects the position of the rotor.
［発明が解決しようとする課題］
上記の如〈従来の内転型無刷子電動機におけるコイルＦ
は、固定子Ａの内側において磁極子の隣合う先端部Ｄｂ
、Ｄｂ間の隙間からコイル素線を通過させて巻回せねば
ならないので、巻回速度が遅（、特にコイル素線径が１
．Ｏｎ＋ｍφ以上に太くなるとさらに巻回が困難になり
、また張力がかけにくいのでコイルＦの巻上がりが膨ら
み、占積率も３０％程度と低くなってしまう。[Problem to be solved by the invention] As described above, the coil F in the conventional internal rotation type brushless motor
is the adjacent tip Db of the magnetic pole piece inside the stator A.
, Since the coil wire must be passed through the gap between Db and wound, the winding speed is slow (particularly when the coil wire diameter is 1
．． If it becomes thicker than On+mφ, it becomes even more difficult to wind, and since it is difficult to apply tension, the winding of the coil F swells, and the space factor becomes low at about 30%.
本発明は、上記事由に鑑みてなしたもので、その目的と
するところは、コイルの巻回が容易になる内転型無刷子
電動機の提供にある。The present invention has been made in view of the above-mentioned reasons, and its object is to provide an internal rotation type brushless electric motor in which winding of a coil is facilitated.
［課題を解決するための手段］
かかる課題を解決するために、本発明の内転型無刷子電
動機は、外周に永久磁石を配設した回転子と、回転子の
外周を円筒状に囲みかつ回転子の外周面に向けて突出し
た複数の磁極子を有する固定子と、該磁極子の周囲に絶
縁部材を介して巻装されるコイルと、回転子の位置を検
知する磁気感応素子と、該磁気感応素子の検知信号によ
りコイルの電流方向を制御する駆動回路を含む内転型無
刷子電動機において、前記固定子は、本体部と先端部に
分離形成されるものであり、しかも該先端部は、円弧板
状であって外周中央に軸方向に伸びる結合部を有した複
数の磁極子片が円周状に位置するよう該結合部を除き絶
縁部材で覆われて一体形成され、該本体部は、磁極子基
部となる内方突出部を設けた円筒状であって内方突出部
の端部に軸方向に伸びる結合部を有した本体片が該結合
部と径方向外周面を除き絶縁部材で覆われて一体形成さ
れた構成としている。[Means for Solving the Problems] In order to solve the problems, the internal rotor type brushless electric motor of the present invention includes a rotor having permanent magnets arranged on the outer periphery, and a rotor having a cylindrical outer periphery. a stator having a plurality of magnetic poles protruding toward the outer peripheral surface of the rotor; a coil wound around the magnetic poles with an insulating member interposed therebetween; and a magnetically sensitive element that detects the position of the rotor. In the adductor type brushless motor including a drive circuit that controls the current direction of the coil based on the detection signal of the magnetically sensitive element, the stator is formed separately into a main body and a tip, and the tip The body is integrally formed with a plurality of arc plate-shaped magnetic pole pieces each having a joint extending in the axial direction at the center of the outer circumference and covered with an insulating member except for the joint so that the pole pieces are positioned circumferentially. The body piece has a cylindrical shape with an inwardly protruding part that becomes the base of the magnetic pole element, and has a connecting part extending in the axial direction at the end of the inwardly protruding part. It has a structure in which it is covered with an insulating member and formed integrally.
［作用］
かかる内転型無刷子電動機にあっては、固定子が本体部
と先端部に分離形成しであるから、コイルの巻回は、両
者を結合する前の状態において、巾広である磁極子先端
部に対応する先端部の影響を受けることなく行える。そ
の結果、コイル巻回時に十分な張力をかけることができ
て占積率が向上する。また先端部は、磁極子片が円周状
に位置するよう絶縁部材で一体形成されているから、コ
イルが回転子側にはみ出すことがない。[Function] In such an internal rotation type brushless electric motor, since the stator is formed separately into the main body and the tip, the winding of the coil is wide before the two are connected. This can be done without being affected by the tip corresponding to the tip of the magnetic pole element. As a result, sufficient tension can be applied when winding the coil, improving the space factor. Further, since the tip portion is integrally formed with an insulating member so that the magnetic pole pieces are positioned circumferentially, the coil does not protrude toward the rotor.
［実ｈｉｉＩ例］
以下、本発明の一実施例を第１図乃至第３図に基づいて
説明する。[Practical Example] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
１は回転子で、回転子軸２、スリーブ３及び永久磁石４
にて構成される。スリーブ３は、磁性材料にて回転子軸
２より軸方向長さが短い円筒状に形成されて回転子軸２
に圧入等により固着されている。永久磁石４は、円筒状
あるいは複数個の呵弧状にセグメントされてスリーブ３
の外周面に接着剤等により固着しである。この永久磁石
４は、径方向に異極が着磁されており、全体的にはその
外周に交互にかつ等間隔に異極が存在するように配設さ
れる。1 is a rotor, which includes a rotor shaft 2, a sleeve 3, and a permanent magnet 4.
Consists of. The sleeve 3 is made of magnetic material and has a cylindrical shape that is shorter in axial length than the rotor shaft 2.
It is fixed by press-fitting, etc. The permanent magnet 4 is segmented into a cylindrical shape or a plurality of arc shapes and is attached to the sleeve 3.
It is fixed to the outer circumferential surface with adhesive or the like. The permanent magnet 4 is magnetized with different poles in the radial direction, and the different poles are arranged so that the different poles are present alternately and at equal intervals on the outer periphery as a whole.
５は固定子で、基本的には回転子ｌの外周を円筒状に囲
みかつ回転子１の外周面に向けて突出した複数（本実施
例では６個）の磁極子を有する。A stator 5 basically surrounds the outer periphery of the rotor 1 in a cylindrical shape and has a plurality of (six in this embodiment) magnetic pole pieces that protrude toward the outer periphery of the rotor 1.
この固定子５は、具体的には、本体部６と先端部７に分
離形成されている。Specifically, this stator 5 is formed separately into a main body part 6 and a tip part 7.
先端部７は、円弧板状であって外周中央に軸方向に伸び
る結合部７Ｃを有した複数の磁極子片７ａ、７ａ、−ｍ
＝が円周状で、かつ等間隔に位置するよう、結合部７Ｃ
を除きプラスチックのような絶縁部材７ｄで覆われて一
体形成されている。この結合部７Ｃは、外方に突出した
７字状をなしている。また磁極子片７ａ、７ａ、−は、
巾広の磁極子先端部となるものであって、珪素鋼板のよ
うな磁性材料を積層して形成する。The tip portion 7 has a plurality of magnetic pole pieces 7a, 7a, -m having a circular arc plate shape and a connecting portion 7C extending in the axial direction at the center of the outer periphery.
Connecting portion 7C so that = is circumferential and located at equal intervals.
Except for this part, it is covered with an insulating member 7d such as plastic and is integrally formed. This joint portion 7C has a 7-shaped shape that projects outward. Moreover, the magnetic pole pieces 7a, 7a, - are
This is the tip of a wide magnetic pole element, and is formed by laminating magnetic materials such as silicon steel plates.
本体部６は、磁極子基部となる内方突出部６ｂを周方向
等間隔に設けた円筒状であって内方突出部６ｂの端部に
軸方向に伸びる結合部６Ｃを有した本体片６ａが、結合
部６Ｃと径方向外周面を除きプラスチックのような絶縁
部材６ｄで覆われて一体形成されている。この結合部６
Ｃは、磁極子先端部７の結合部７Ｃに対応した内方に凹
む７字状をなしている。従って内方突出部６ｂを覆う絶
縁部材６ｄの軸方向両端の形状も、結合が可能となるよ
う結合部６Ｃに対応させている。また、この本体片６ａ
も珪素鋼板のような磁性材料を積層し゛て形成される。The main body part 6 has a cylindrical shape with inward protrusions 6b, which serve as the base of the magnetic pole element, provided at equal intervals in the circumferential direction, and a main body piece 6a having a coupling part 6C extending in the axial direction at the end of the inward protrusions 6b. is integrally formed and covered with an insulating member 6d such as plastic, except for the joint portion 6C and the radial outer circumferential surface. This joint 6
C has a 7-shape that is concave inward corresponding to the coupling portion 7C of the magnetic pole tip 7. Therefore, the shape of both ends in the axial direction of the insulating member 6d covering the inward protrusion 6b is also made to correspond to the coupling part 6C so that coupling is possible. Also, this main body piece 6a
It is also formed by laminating magnetic materials such as silicon steel plates.
８はコイルで、内方突出部６ｂ（磁極子基部）の周囲に
、絶縁部材６ｄを介して巻装される。ここで重要な点は
、このコイルの巻回が本体部６に先端部７を結合する前
の状態で行うことである。A coil 8 is wound around the inwardly projecting portion 6b (base of the magnetic pole piece) via an insulating member 6d. The important point here is that the coil is wound before the tip end 7 is connected to the main body 6.
すなわち固定子５は、内方突出部６ｂにコイル８が巻装
された後、その本体部６に先端部７を圧入等により結合
することによって構成されるのである。なお、上記した
絶縁部材６ｄ、７ｄは、絶縁機能を果たす限り薄くする
ことが望ましい。That is, the stator 5 is constructed by winding the coil 8 around the inward protrusion 6b and then joining the tip end 7 to the main body 6 by press-fitting or the like. Note that it is desirable that the above-mentioned insulating members 6d and 7d be made as thin as possible so long as they fulfill their insulating function.
９はヨークを兼ねるハウジングで、有底円筒状をなし、
その内周面９ａに固定子５、すなわち本体部６の径方向
外周面を圧入等に固定し得る内径を有する。また底部９
ｂには軸受１０を備えている。9 is a housing that also serves as a yoke, and has a cylindrical shape with a bottom.
It has an inner diameter that allows the stator 5, that is, the radial outer circumferential surface of the main body portion 6 to be fixed to the inner circumferential surface 9a by press fitting or the like. Also the bottom 9
b is equipped with a bearing 10.
１１は軸受台で、回転子１の位置検出を行うホール素子
のような磁気感応素子１２を支持し、軸受１３を備え、
ハウジング９の開口部にそれを塞ぐようにして固定され
る。従って回転子軸２は、軸受１０，１３により回動可
能に支持される。この磁気感応素子１２の位置検知信号
は、図外駆動回路に入力され、その駆動回路が作動して
コイル８への通電が制御される。A bearing stand 11 supports a magnetically sensitive element 12 such as a Hall element for detecting the position of the rotor 1, and is equipped with a bearing 13.
It is fixed to the opening of the housing 9 so as to close it. Therefore, the rotor shaft 2 is rotatably supported by the bearings 10 and 13. The position detection signal of the magnetically sensitive element 12 is input to a drive circuit (not shown), and the drive circuit is activated to control energization of the coil 8.
［発明の効果］
本発明の内転型無刷子電動機は、固定子が本体部と先端
部に分離形成しであるから、コイルの巻回は、両者を結
合する前の状態において、中広である磁極子先端部に対
応する先端部の影響を受けることなく行えることとなり
、コイルの巻回が容易になり、加えて先端部は、磁極子
片が円周状に位置するよう絶縁部材で一体形成されてい
るから、コイルが回転子側にはみ出すことがない、とい
う効果を奏する。[Effects of the Invention] In the internal rotation type brushless electric motor of the present invention, since the stator is formed separately into the main body and the tip, the winding of the coil is wide and medium before the two are connected. This allows winding of the coil to be done easily without being affected by the tip corresponding to the tip of a certain magnetic pole.In addition, the tip is integrated with an insulating material so that the pole pieces are positioned circumferentially. Because of this, the coil does not protrude toward the rotor.
第１図は、本発明の一実施例を示す縦断面図、第２図は
、その水平断面図、
第３図は、その要部分解斜視図、
第４図は、従来例の鎧断面図、
第５図は、その水平断面図、
第６図は、その要部斜視図である。
１−回転子、２一回転子軸、３−・スリーブ、４−永久
磁石、５−・固定子、６−本体部、６ ａ −本体片、
６ｂ−・−内方突出部、６ｃ−結合部、６ｄ−・・絶縁
部材、７−・先端部、７ａ−磁極子片、７ｃ−結合部、
７ｄ−絶縁部材、８−コイル、９・−ハウジング、１１
・−軸受台、１２−・磁気感応素子。
第２図Fig. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, Fig. 2 is a horizontal cross-sectional view thereof, Fig. 3 is an exploded perspective view of the main parts thereof, and Fig. 4 is a cross-sectional view of the armor of the conventional example. , FIG. 5 is a horizontal sectional view thereof, and FIG. 6 is a perspective view of the main part thereof. 1 - Rotor, 2 - Rotor shaft, 3 - Sleeve, 4 - Permanent magnet, 5 - Stator, 6 - Main body, 6 a - Main body piece,
6b--inward protrusion, 6c--coupling section, 6d--insulating member, 7--tip section, 7a--magnetic pole piece, 7c--coupling section,
7d-insulating member, 8-coil, 9-housing, 11
・-Bearing stand, 12-・Magnetic sensing element. Figure 2
Claims (1)
周を円筒状に囲みかつ回転子の外周面に向けて突出した
複数の磁極子を有する固定子と、該磁極子の周囲に絶縁
部材を介して巻装されるコイルと、回転子の位置を検知
する磁気感応素子と、該磁気感応素子の検知信号により
コイルの電流方向を制御する駆動回路を含む内転型無刷
子電動機において、前記固定子は、本体部と先端部に分
離形成されるものであり、しかも該先端部は、円弧板状
であって外周中央に軸方向に伸びる結合部を有した複数
の磁極子片が円周状に位置するよう該結合部を除き絶縁
部材で覆われて一体形成され、該本体部は、磁極子基部
となる内方突出部を設けた円筒状であって内方突出部の
端部に軸方向に伸びる結合部を有した本体片が該結合部
と径方向外周面を除き絶縁部材で覆われて一体形成され
ている内転型無刷子電動機。(1) A rotor with permanent magnets arranged on its outer periphery, a stator that surrounds the outer periphery of the rotor in a cylindrical shape and has a plurality of magnetic pole pieces protruding toward the outer circumferential surface of the rotor, and the periphery of the magnetic pole pieces. An internal rotor-type brushless motor that includes a coil wound around the rotor through an insulating member, a magnetically sensitive element that detects the position of the rotor, and a drive circuit that controls the current direction of the coil based on the detection signal of the magnetically sensitive element. In the stator, the stator is formed separately into a main body portion and a tip portion, and the tip portion has a plurality of magnetic pole pieces each having an arc plate shape and having a coupling portion extending in the axial direction at the center of the outer periphery. The main body is integrally formed and covered with an insulating member except for the joint part so that the parts are located circumferentially, and the main body part has a cylindrical shape with an inward protrusion that becomes the base of the magnetic pole. An internal rotation type brushless electric motor in which a main body piece having an axially extending coupling portion at an end thereof is integrally formed and covered with an insulating member except for the coupling portion and the radially outer circumferential surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17744888A JPH0226259A (en) | 1988-07-15 | 1988-07-15 | Inrevolvable brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17744888A JPH0226259A (en) | 1988-07-15 | 1988-07-15 | Inrevolvable brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0226259A true JPH0226259A (en) | 1990-01-29 |
Family
ID=16031125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17744888A Pending JPH0226259A (en) | 1988-07-15 | 1988-07-15 | Inrevolvable brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0226259A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006296037A (en) * | 2005-04-07 | 2006-10-26 | Sumitomo Electric Ind Ltd | Stator for motor and its manufacturing method |
| DE102017003800B4 (en) | 2016-04-22 | 2022-10-27 | Fanuc Corporation | ROTATING ELECTRICAL MACHINE WITH A ROTOR INCLUDING A SUPPORTING ELEMENT |
-
1988
- 1988-07-15 JP JP17744888A patent/JPH0226259A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006296037A (en) * | 2005-04-07 | 2006-10-26 | Sumitomo Electric Ind Ltd | Stator for motor and its manufacturing method |
| DE102017003800B4 (en) | 2016-04-22 | 2022-10-27 | Fanuc Corporation | ROTATING ELECTRICAL MACHINE WITH A ROTOR INCLUDING A SUPPORTING ELEMENT |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4528473A (en) | Permanent magnet type step motor | |
| EP1455435B1 (en) | Single phase induction motor further comprising a permanent magnetic unit | |
| JPH10215557A (en) | Motor | |
| JPH0720364B2 (en) | Step Motor | |
| JP2893684B2 (en) | Adduction type brushless motor | |
| US4758751A (en) | Thin type DC brushless motor | |
| JP2005333762A (en) | Rotating electric machine and its rotor | |
| JPH0226259A (en) | Inrevolvable brushless motor | |
| JPH11308812A (en) | Sensor magnet fitting apparatus in motor provided with sensor | |
| JP3517548B2 (en) | motor | |
| JP2007221877A (en) | Magnet rotor | |
| JPH0236757A (en) | Brushless motor | |
| JPH0295149A (en) | Permanent magnet rotor | |
| JPH01270761A (en) | Inner rotor type brushless motor | |
| JP2591628Y2 (en) | Stator structure of brushless motor | |
| JPH01110039A (en) | Inner revolution type brushless motor | |
| JP3517546B2 (en) | motor | |
| JP3517543B2 (en) | motor | |
| JPH05176514A (en) | Brushless motor | |
| JPH01321850A (en) | Inrevolvable brushless motor | |
| JP3517542B2 (en) | motor | |
| JPH0334664U (en) | ||
| JPS5837784U (en) | DC brushless motor | |
| JPH02197247A (en) | Brushless motor | |
| JPH0332349A (en) | Brushless motor |