JP2682097B2 - Brushless motor stator - Google Patents
Brushless motor statorInfo
- Publication number
- JP2682097B2 JP2682097B2 JP314389A JP314389A JP2682097B2 JP 2682097 B2 JP2682097 B2 JP 2682097B2 JP 314389 A JP314389 A JP 314389A JP 314389 A JP314389 A JP 314389A JP 2682097 B2 JP2682097 B2 JP 2682097B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit board
- printed circuit
- stator
- winding
- iron core
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は家庭用エアコン等の送風ファン駆動源として
用いられる無刷子電動機の固定子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 of a brushless electric motor used as a blower fan drive source for a home air conditioner or the like.
従来の技術 近年、家庭用エアコン等空調機器において、室内側熱
交換器の送風駆動源として直流無刷子電動機が採用され
ているが、一方においては単相誘導電動機をSCR制御す
る格安な方法も採用されており、直流無刷子電動機に対
して高効率、制御性の良さに加えて価格低減の要望が大
きくなっている。2. Description of the Related Art In recent years, in air conditioners such as home air conditioners, a DC brushless motor has been adopted as a blower drive source for the indoor heat exchanger, but on the other hand, a cheap method of SCR controlling a single-phase induction motor has also been adopted. Therefore, there is an increasing demand for high efficiency and good controllability of DC direct current brushless motors as well as price reduction.
従来の無刷子電動機は特願昭60−90053号にあげられ
るような構造であった。The conventional brushless motor has a structure as described in Japanese Patent Application No. 60-90053.
以下図面に基づき従来の無刷子電動機について説明す
る。A conventional brushless motor will be described below with reference to the drawings.
第３図は特願昭60−90053号に開示されている無刷子
電動機の固定子巻線組立状態図である。固定子鉄心１に
施された絶縁材２に巻線３が施され円板状のプリント基
板11上のセンサ12はセンサ固定台９により取付けられて
おり、駆動回路部品10a,10b等が取付けられている。こ
れら駆動回路部品10a,10bは巻線３と巻線３の間にくる
様に配置される。そして、プリント基板11は固定子鉄心
絶縁材２に当接して取付けられプリント基板11のリード
線巻付け用突起11aに巻線３のリード線が巻き付けられ
て結線される。FIG. 3 is an assembly state diagram of a stator winding of a brushless motor disclosed in Japanese Patent Application No. 60-90053. The sensor 12 on the disk-shaped printed circuit board 11 in which the winding 3 is applied to the insulating material 2 applied to the stator core 1 is attached by the sensor fixing base 9, and the drive circuit components 10a, 10b, etc. are attached. ing. These drive circuit components 10a and 10b are arranged so as to be located between the windings 3 and 3. Then, the printed circuit board 11 is attached in contact with the stator core insulating material 2, and the lead wire of the winding wire 3 is wound around the lead wire winding protrusion 11a of the printed circuit board 11 to be connected.
その後に電気、絶縁性をする熱硬化性樹脂で固定子鉄
心1,巻線3,プリント基板11が一体的にモールド成型され
固定子部を構成している。After that, the stator core 1, the winding 3, and the printed circuit board 11 are integrally molded with a thermosetting resin having electrical and insulating properties to form a stator portion.
発明が解決しようとする課題 以上の様な構成において、プリント基板は円板状であ
るため、プリント基板製作上の材料ロスが大きい。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-described structure, since the printed circuit board has a disk shape, material loss in manufacturing the printed circuit board is large.
又、プリント基板がほぼ固定子鉄心外径と同程度の寸
法である為、熱硬化性樹脂で一体的に形成する際のプリ
ント基板周辺の樹脂流動性が悪く、成型不良などを招く
問題が有った。Further, since the printed circuit board is approximately the same size as the outer diameter of the stator core, there is a problem that the resin fluidity around the printed circuit board is poor when integrally formed with the thermosetting resin, resulting in defective molding. It was.
課題を解決するための手段 本発明は前記従来例の問題点を解決する為に次の様な
手段を講ずる。Means for Solving the Problems The present invention takes the following means in order to solve the problems of the conventional example.
すなわち、複数のスロットを有する環状の固定子鉄心
に絶縁材を介して巻線を施し、形状が略長円形で片側の
円弧部に外部リード線を接続する突起部を形成し、反対
側の円弧部には前記突起部に相当する凹部を形成し、さ
らに前記巻線のリード線巻付用突起等を複数個形成して
なるプリント基板上に駆動回路部品を巻線と巻線の間に
くる様配置させ実装し、前記駆動回路部品が実装された
側を前記巻線側に対向配置して前記固定子鉄心に取付
け、前記巻線のリード端を前記リード線巻付用突起及び
プリント基板上の配線を利用して結線した後に、電気絶
縁性を有する熱硬化性樹脂で固定子鉄心、巻線、プリン
ト基板等を一体的にモールド成型して固定子とする。こ
の際にプリント基板の長円形の一方の円弧部に設けた突
起部が熱硬化性樹脂でモールド成型された固定子の外径
部に突出する様構成するものである。That is, an annular stator iron core having a plurality of slots is wound through an insulating material, and an elliptical shape is formed to form a protrusion for connecting an external lead wire to an arc portion on one side, and an arc on the opposite side. A drive circuit component is placed between the windings on a printed circuit board on which a concave portion corresponding to the protruding portion is formed, and a plurality of windings for winding the lead wire of the winding is formed. Mounted on the stator core with the side on which the drive circuit components are mounted facing the winding side and the lead end of the winding on the lead wire winding protrusion and the printed circuit board. After the wiring is used, the stator core, the winding, the printed circuit board and the like are integrally molded with a thermosetting resin having electrical insulation properties to form a stator. At this time, the projection provided on one arcuate part of the oval of the printed circuit board is configured to project to the outer diameter part of the stator molded by the thermosetting resin.
作用 以上の構成とすることにより、長円形の直線部及び円
弧上の凹部は成型時の熱硬化性樹脂の通り道となり、成
型時のプリント基板周辺の樹脂流動性をよくすることか
ら熱硬化性樹脂で固定子をモールド成型する際のプリン
ト基板及び回路部品に与えるストレスを低減し、モール
ド成型による不良を防止する。With the above configuration, the oval straight line portion and the arcuate concave portion serve as paths for the thermosetting resin during molding, and improve the resin fluidity around the printed circuit board during molding. The stress applied to the printed circuit board and the circuit components when the stator is molded with is reduced, and defects due to molding are prevented.
又、長円形の片側の円弧上の突起部を反対側の円弧上
の凹部で形成してプリント基板を製作できる他、長円形
をしていることによりプリント基板のロス材料が円板状
のものにくらべ大巾に低減し、プリント基板材料コスト
を大巾に低減する。In addition, a printed circuit board can be manufactured by forming a protrusion on one side of an ellipse on a circular arc on the other side to form a printed circuit board. Compared with the above, the cost of printed circuit board materials can be greatly reduced.
実施例 以下、本発明による無刷子電動機の固定子の一実施例
を図面に基づき詳細に説明する。Embodiment Hereinafter, one embodiment of a stator of a brushless electric motor according to the present invention will be described in detail with reference to the drawings.
第１図は本発明実施例の無刷子電動機の固定子の巻線
組立図である。なお、従来例と同一部材には同一番号を
付している。第１図において固定子鉄心１に鉄心絶縁材
２が施され巻線３が巻装されている。一方プリント基板
４は直線部分を有する略長円形であり、リード線巻付用
突起4aが複数箇所設けられており、さらに長円形の一方
の円弧上には突起部4bが設けられもう一方の円弧上には
凹部4cが形成され、駆動用パワーIC5a及び駆動回路部品
5b及び位置センサであるホール素子６等が装着されてい
る。これら駆動回路部品は巻線３どうしの間にくるよう
に配置されており、プリント基板４は固定子鉄心絶縁材
２に設けられた固定部に当接して取り付けられ巻線３が
プリント基板のリード線巻付け用突起4aに巻付けられプ
リント基板４上の配線によって駆動回路用部品等と結線
される。後に、電気絶縁性を有する熱硬化性樹脂でモー
ルド成型され固定子が構成される。FIG. 1 is a winding assembly diagram of a stator of a brushless motor according to an embodiment of the present invention. The same members as those in the conventional example are designated by the same reference numerals. In FIG. 1, an iron core insulating material 2 is applied to a stator iron core 1 and a winding 3 is wound. On the other hand, the printed circuit board 4 has a substantially oval shape having a straight line portion, is provided with a plurality of lead wire winding protrusions 4a, and further has a protrusion 4b on one arc of the ellipse and the other arc. The recess 4c is formed on the upper side, and the driving power IC 5a and the driving circuit component are formed.
5b and a Hall element 6 which is a position sensor are attached. These drive circuit parts are arranged so as to be located between the windings 3, and the printed circuit board 4 is attached by abutting on a fixed portion provided on the stator core insulating material 2 so that the winding 3 is a lead of the printed circuit board. The wire is wound on the wire winding protrusion 4a and connected to the drive circuit parts and the like by the wiring on the printed circuit board 4. After that, the stator is formed by molding with a thermosetting resin having electric insulation.
第２図は本発明による固定子よりなる無刷子電動機の
縦半断面図である。固定子鉄心１及び巻線３とともに駆
動回路が実装されたプリント基板４が熱硬化性樹脂のモ
ールド成型によりフレーム13と一体に成型され固定子部
７を構成する。なお、プリント基板４の突出部4bはフレ
ーム13の外径部へ露出しており外部リード線８が接続さ
れている。そして、固定子部７の一方の内径には軸受15
を保持するブラケット16を圧入し、回転子17を軸架する
とともに他方には軸受18を保持するブラケット19をリベ
ット20により固定している。FIG. 2 is a vertical half sectional view of a brushless electric motor including a stator according to the present invention. The printed circuit board 4 on which the drive circuit is mounted together with the stator core 1 and the windings 3 is integrally molded with the frame 13 by molding of thermosetting resin to form the stator portion 7. The protruding portion 4b of the printed circuit board 4 is exposed to the outer diameter portion of the frame 13 and is connected to the external lead wire 8. The bearing 15 is attached to one inner diameter of the stator portion 7.
A bracket 16 for holding a bearing 18 is press-fitted, a rotor 17 is mounted on the other side, and a bracket 19 for holding a bearing 18 is fixed to the other side by a rivet 20.
発明の効果 本発明によりプリント基板周辺の熱硬化性樹脂の流動
性を良くし、モールド成型時のプリント基板も回路部品
に加わるストレスを低減し、モールド成型による固定子
の不良を防止し、信頼性を向上した無刷子電動機を提供
できるとともに、プリント基板の材料コストを下げ、よ
り安価な無刷子電動機を提供することができる。Advantages of the Invention According to the present invention, the flowability of the thermosetting resin around the printed circuit board is improved, the stress applied to the printed circuit board on the circuit parts during molding is reduced, and the failure of the stator due to molding is prevented, which improves reliability. It is possible to provide a brushless electric motor with improved performance, reduce the material cost of the printed circuit board, and provide a less expensive brushless electric motor.
第１図は本発明の固定子の巻線組立状態を示す斜視図、
第２図は本発明による固定子を用いた内転形無刷子電動
機の縦半断面図、第３図は従来の固定子巻線組立状態を
示す図である。 １……固定子鉄心、２……鉄心絶縁材、３……巻線、４
……プリント基板、4b……突起部、4c……凹部、５……
駆動回路部品、６……ホール素子、７……固定子部。FIG. 1 is a perspective view showing a winding assembly state of a stator of the present invention,
FIG. 2 is a vertical half sectional view of an adderless brushless motor using a stator according to the present invention, and FIG. 3 is a view showing a conventional stator winding assembly state. 1 ... Stator core, 2 ... Core insulation, 3 ... Winding, 4
...... Printed circuit board, 4b ...... Projection, 4c ...... Concave, 5 ......
Drive circuit parts, 6 ... Hall element, 7 ... Stator part.
Claims (1)
と、前記鉄心のスロット絶縁と巻線シュラウドを一体に
形成した鉄心絶縁材と、前記鉄心歯部毎に施した巻線
と、位置センサ及び駆動回路部品を実装した略長円形で
一方の円弧部には突起部を、もう一方の円弧部には前記
突起部に対応した凹部を形成したプリント基板を備え、
前記プリント基板上の駆動回路部品が前記巻線と巻線の
間の空間に位置する様配置させ、電気絶縁性を有する熱
硬化性樹脂で、固定子鉄心，巻線，プリント基板とをプ
リント基板に設けた前記突起部が露出するように一体的
にモールド成型して成る無刷子電動機の固定子。1. An annular stator iron core having a plurality of slots, an iron core insulating material in which a slot insulation of the iron core and a winding shroud are integrally formed, a winding provided for each tooth portion of the iron core, and a position sensor. And a substantially oval mounting the drive circuit parts, the one circular arc portion is provided with a projection portion, the other circular arc portion is provided with a printed circuit board having a concave portion corresponding to the projection portion,
The drive circuit components on the printed circuit board are arranged so as to be positioned in the space between the windings, and the stator core, the windings, and the printed circuit board are made of a thermosetting resin having electrical insulation. A brushless electric motor stator integrally formed by molding so that the protrusions provided on the substrate are exposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP314389A JP2682097B2 (en) | 1989-01-10 | 1989-01-10 | Brushless motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP314389A JP2682097B2 (en) | 1989-01-10 | 1989-01-10 | Brushless motor stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02184249A JPH02184249A (en) | 1990-07-18 |
| JP2682097B2 true JP2682097B2 (en) | 1997-11-26 |
Family
ID=11549134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP314389A Expired - Lifetime JP2682097B2 (en) | 1989-01-10 | 1989-01-10 | Brushless motor stator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2682097B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5554427B2 (en) * | 2013-02-21 | 2014-07-23 | 株式会社マキタ | Electric tool with DC brushless motor |
-
1989
- 1989-01-10 JP JP314389A patent/JP2682097B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02184249A (en) | 1990-07-18 |
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