JPH04168954A - Stator for commutatorless motor - Google Patents
Stator for commutatorless motorInfo
- Publication number
- JPH04168954A JPH04168954A JP2293851A JP29385190A JPH04168954A JP H04168954 A JPH04168954 A JP H04168954A JP 2293851 A JP2293851 A JP 2293851A JP 29385190 A JP29385190 A JP 29385190A JP H04168954 A JPH04168954 A JP H04168954A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- notch
- winding
- stator core
- driving circuit
- 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
- 238000004804 winding Methods 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000010292 electrical insulation Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 7
- 230000005855 radiation Effects 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、エアコン等送風を伴う機器のファン駆動源と
しての無整流子電動機の固定子の構成に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to the structure of a stator of a commutatorless motor used as a fan drive source for equipment that blows air, such as an air conditioner.
従来の技術
近年エアコンなどの電化製品において、ファンの可変速
や制御性を目的としてその駆動源に無整流子電動機が使
われることが多くなっている。従来これら無整流子電動
機の固定子の構成としては、第６図に示すごとく絶縁層
２を形成した固定子鉄心１に巻線３を施して固定子とし
、紙フエノールプリント基板６上に構成した前記巻線の
通電を制御するパワー素子５を含む駆動回路４を、前記
固定子の軸方向に一体に重ねた形で熱硬化性の樹脂８で
モールドするのが一般的である。BACKGROUND OF THE INVENTION In recent years, non-commutated motors have been increasingly used as drive sources for electric appliances such as air conditioners to provide variable speed and controllability of fans. Conventionally, as shown in FIG. 6, the stator of these commutatorless motors was constructed by applying windings 3 to a stator core 1 on which an insulating layer 2 was formed to form a stator, and the stator was constructed on a paper phenol printed circuit board 6. Generally, a drive circuit 4 including a power element 5 for controlling energization of the windings is molded with a thermosetting resin 8 so as to be integrally stacked in the axial direction of the stator.
発明が解決しようとする課題
ここで駆動回路部分を詳細に見ると、プリント基板６の
基材として用いられる紙フエノール等の材料は、−船釣
に熱の伝導性は余り優れていると言えない。そして、こ
のプリント基板６上に駆動回路４を構成するパワー素子
５をはじめとする電子部品群が実装されている。Problems to be Solved by the Invention If we look at the drive circuit part in detail, we can see that the materials used as the base material for the printed circuit board 6, such as paper phenol, cannot be said to have very good thermal conductivity for boat fishing. . A group of electronic components including a power element 5 constituting the drive circuit 4 are mounted on the printed circuit board 6.
これら電子部品群のうちパワー素子５は巻線３に流れる
電流のスイッチングに直接関与しており、その電流によ
り損失を発生する。すなわち巻線３に流れる電流により
発熱を伴う。そしてこの発熱がパワー素子５の規格を超
えない電流値で使用されるよう設計せねばならない。つ
まりパワー素子５の発熱限界がモータ電流＝モータ出力
を決定することになる。通常このような場合にはパワー
素子５に放熱フィンを取りつけ素子の放熱を促進させて
温度上昇を軽減させるのが一般的である。しかし、従来
例の如く駆動回路４を巻線３や固定子鉄心１と共に樹脂
８て一体にモールドする場合には、パワー素子５に放熱
フィンを取り付けるとその９完成品の体積が大きくなっ
てしまったり、また従来例の如く駆動回路の部品群を巻
線と巻線の間に位置するように配置しようとする場合、
スペースが不足して放熱フィンが取り付けられない場合
もある。さらにモールド時に流れる樹脂の圧力によって
放熱フィンが変形したり外れたりすることもある。Among these electronic components, the power element 5 is directly involved in switching the current flowing through the winding 3, and the current causes loss. That is, the current flowing through the winding 3 generates heat. The design must be such that this heat generation is used at a current value that does not exceed the specifications of the power element 5. In other words, the heat generation limit of the power element 5 determines the motor current=motor output. In such a case, it is common to attach heat radiation fins to the power element 5 to promote heat radiation from the element and reduce the temperature rise. However, when the drive circuit 4 is integrally molded with the winding 3 and the stator core 1 using the resin 8 as in the conventional example, the volume of the finished product increases when heat dissipation fins are attached to the power element 5. If you want to arrange the drive circuit components so that they are located between the windings, or as in the conventional example,
In some cases, it may not be possible to install heat dissipation fins due to lack of space. Furthermore, the heat radiation fins may become deformed or come off due to the pressure of the resin flowing during molding.
このように考えると、従来の技術では事実上パワー素子
５に放熱フィンを取り付けることは不可能であり、パワ
ー素子５の放熱はモールド樹脂８と熱伝導性の余り優れ
ないプリント基板６に頼ることになり放熱の十分な場合
に比べて、流しうる電流が小さくなる。結果としてこの
ように構成した無整流子電動機の固定子ではモータ出力
に制限を受けることになる。したがってパワー素子の放
熱を改善できれば大きさが同じでもより大きな出力の無
整流子電動機の固定子を作ることができる。Considering this, it is practically impossible to attach a heat dissipation fin to the power element 5 using conventional technology, and the heat dissipation of the power element 5 relies on the molded resin 8 and the printed circuit board 6, which does not have very good thermal conductivity. As a result, the current that can be passed becomes smaller than in the case where heat dissipation is sufficient. As a result, the stator of the commutatorless motor configured in this manner is subject to limitations on motor output. Therefore, if the heat dissipation of the power element can be improved, it is possible to create a stator for a commutatorless motor with a larger output even though the size is the same.
課題を解決するための手段
本発明では、パワー素子の発熱限界を拡大して限られた
体積でより大きな出力を得るために次の手段を講じる。Means for Solving the Problems In the present invention, the following measures are taken to expand the heat generation limit of the power element and obtain greater output with a limited volume.
すなわち、環状の鉄心の外周の一部を切り欠き、駆動回
路挿入部を形成した前記鉄心に絶縁層を介在して巻線を
施すとともに、前記駆動回路挿入部に金属を基材とする
プリント基板上に構成した前記巻線の通電を制御する駆
動回路を挿入固定し、固定子鉄心の周囲を電気絶縁性を
有する熱硬化性樹脂で一体にモールドして無整流子電動
機の固定子とする。That is, a part of the outer periphery of an annular core is cut out, a drive circuit insertion portion is formed on the core, and winding is applied to the core with an insulating layer interposed therebetween, and the drive circuit insertion portion is provided with a printed circuit board made of metal as a base material. A drive circuit for controlling energization of the windings configured above is inserted and fixed, and the stator core is integrally molded with a thermosetting resin having electrical insulation properties to form a stator of a commutatorless motor.
作用
このような構成にすることによって、パワー素子の発生
する熱は金属のプリント基板に放熱され、さらに金属基
板から固定子鉄心へと放熱される。Function: With this configuration, the heat generated by the power element is radiated to the metal printed circuit board, and further from the metal substrate to the stator core.
すなわち固定子鉄心が放熱フィンと同じように機能して
いるのである。ここで駆動回路を構成する金属基板は、
固定子鉄心の外周に設けられた切り欠き部に圧入気味に
挿入され、切り欠き部底面に密接するとともに切り欠き
部から脱落しないようになっているので、樹脂モールド
時の圧力で脱落することはないし、金属基板と固定子鉄
心の間の熱抵抗も十分小さくできる。In other words, the stator core functions in the same way as radiation fins. The metal substrate that constitutes the drive circuit here is
It is inserted into the notch provided on the outer periphery of the stator core with a slight press fit, and it is tightly attached to the bottom of the notch and does not fall off from the notch, so it will not fall off due to the pressure during resin molding. Moreover, the thermal resistance between the metal substrate and the stator core can be made sufficiently small.
実施例
本発明の詳細を、実施例に基づき図面を用いて説明する
。EXAMPLES The details of the present invention will be explained based on examples with reference to the drawings.
第１図は本発明の固定子の一実施例を示す横断面図であ
り、第２図は第１図のＡ−Ａ線による縦断面図である。FIG. 1 is a cross-sectional view showing one embodiment of the stator of the present invention, and FIG. 2 is a vertical cross-sectional view taken along line A--A in FIG. 1.
第３図は切り欠き部の拡大図であり、第４図は別の実施
例の切り欠き部の拡大図である。第１図において固定子
鉄心１には絶縁層２を介して巻線３が巻かれている。そ
して巻線３の通電を制御する駆動回路４は、パワー素子
５を中心とする電子部品類とアルミを基材とするプリン
ト基板６によって構成されている。一方、固定子鉄心１
の外周には切り欠き部７が設けられており、その輻Ｗは
プリント基板６の幅とほぼ同じでプリント基板６が圧入
気味に挿入できる寸法にする。FIG. 3 is an enlarged view of the notch, and FIG. 4 is an enlarged view of the notch of another embodiment. In FIG. 1, a winding 3 is wound around a stator core 1 with an insulating layer 2 in between. A drive circuit 4 that controls energization of the winding 3 is composed of electronic components including a power element 5 and a printed circuit board 6 made of aluminum as a base material. On the other hand, stator core 1
A notch 7 is provided on the outer periphery of the notch 7, and the width W thereof is approximately the same as the width of the printed circuit board 6, and is dimensioned so that the printed circuit board 6 can be inserted with a slight press fit.
このとき第３図のようにプリント基板６が平板の場合は
、切り欠き部７の底部も平面に仕上げる。At this time, if the printed circuit board 6 is a flat plate as shown in FIG. 3, the bottom of the notch 7 is also finished flat.
また、第４図のようにプリント基板６を曲面にした場合
は、切り欠き部７の底部もそれに合わせた曲面にする。Further, when the printed circuit board 6 is curved as shown in FIG. 4, the bottom of the notch 7 is also curved accordingly.
これらはプリント基板６と切り欠き部７の底面との密着
性を高めるために行う手段である。さらに、固定子鉄心
１の切り欠き部７を設けた部分のスロットは切り欠きを
設けた為に継鉄部の幅が小さくなる為に継鉄部の幅を確
保するためにその深さを浅（しておく。These measures are taken to improve the adhesion between the printed circuit board 6 and the bottom surface of the notch 7. Furthermore, since the width of the yoke portion of the slot in the portion of the stator core 1 where the notch portion 7 is provided becomes smaller due to the provision of the notch, the depth of the slot is reduced to ensure the width of the yoke portion. (Keep it.
そして駆動回路４を構成するプリント基板６を切り欠き
部７に圧入気味に挿入し、巻線３と駆動回路４が電気的
に接続される。ここでプリント基板６と切り欠き部７の
圧力の程度が弱い場合は、第１図の拡大した部分Ｂで示
すように切り欠き部の一部を変形させるのも有効な手段
である。又プリント基板６と切り欠き部７の関係はこれ
らのほかに第５図に示す形をとることも有効である。Then, the printed circuit board 6 constituting the drive circuit 4 is inserted into the notch 7 with a slight press fit, and the winding 3 and the drive circuit 4 are electrically connected. If the degree of pressure between the printed circuit board 6 and the notch 7 is weak, deforming a part of the notch as shown in the enlarged section B in FIG. 1 is also an effective means. In addition to the above, it is also effective to have the relationship between the printed circuit board 6 and the notch 7 as shown in FIG.
以上のように、固定子鉄心１に駆動回路４を挿大固定し
てこれらを電気絶縁性を有する熱硬化性樹脂８で一体に
モールド固化して無整流子電動機の固定子が完成する。As described above, the drive circuit 4 is inserted and fixed onto the stator core 1, and these are molded and solidified together with the thermosetting resin 8 having electrical insulation properties, thereby completing the stator of the commutatorless motor.
発明の効果 本発明の実施により次の効果を得る。Effect of the invention By implementing the present invention, the following effects can be obtained.
（１） 駆動回路のパワー素子の放熱が大幅に改善さ
れる。(1) Heat dissipation from the power elements of the drive circuit is significantly improved.
（２） 巻線に流しうる電流が大きくできる。(2) The current that can flow through the windings can be increased.
（３） 電流を太き（取れるので体積が同じで電動機
出力を大きくできる。(3) Since the current can be increased, the motor output can be increased with the same volume.
（４）駆動回路を固定子の軸線方向に配置しないので電
動機の軸方向長さを小さ（することができる。(4) Since the drive circuit is not disposed in the axial direction of the stator, the axial length of the motor can be reduced.
（５）電動機の軸方向長さを同じにした場合は出力を大
きくとることができる。(5) If the axial lengths of the motors are made the same, the output can be increased.
第１図は本発明の一実施例の横断面図、第２図は第１図
Ａ−Ａ線による縦断面図、第３図は切り欠き部の拡大図
、第４図は別の実施例の切り欠き部の拡大図、第５図は
プリント基板６と切り欠き部７の別の関係図、第６図は
従来例の固定子の縦断面図である。
１・・・・・・固定子鉄心、３・・・・・・巻線、４・
・・・・・駆動回路、５・・・・・・パワー素子、６・
・・・・・プリント基板、７・・・・・・切り欠き、８
・・・・・・熱硬化性樹脂。
代理人の氏名 弁理士 小鍜治明 ほか２名第１図
１−固足−１−級心
第２図
第３図
第４図
第５図Fig. 1 is a cross-sectional view of one embodiment of the present invention, Fig. 2 is a longitudinal sectional view taken along line A-A in Fig. 1, Fig. 3 is an enlarged view of a notch, and Fig. 4 is another embodiment. 5 is another relationship diagram between the printed circuit board 6 and the notch 7, and FIG. 6 is a vertical sectional view of a conventional stator. 1... Stator core, 3... Winding wire, 4...
... Drive circuit, 5 ... Power element, 6.
...Printed circuit board, 7...Notch, 8
...Thermosetting resin. Name of agent: Patent attorney Haruaki Ogata and 2 others Figure 1
1-Solid foot-1-Grade heart Figure 2 Figure 3 Figure 4 Figure 5
Claims (1)
に形成された切り欠きに、駆動回路を構成した金属を基
材とするプリント基板を挿入固定した固定子鉄心の周囲
を電気絶縁性を有する熱硬化性樹脂でモールドして一体
化した無整流子電動機の固定子。A metal-based printed circuit board, which constitutes a drive circuit, is inserted and fixed into a notch formed in a part of the outer periphery of a ring-shaped core with windings interposed between an insulating layer. A stator for a commutatorless motor that is molded and integrated with thermosetting resin that has electrical insulation properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2293851A JPH04168954A (en) | 1990-10-30 | 1990-10-30 | Stator for commutatorless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2293851A JPH04168954A (en) | 1990-10-30 | 1990-10-30 | Stator for commutatorless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04168954A true JPH04168954A (en) | 1992-06-17 |
Family
ID=17799980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2293851A Pending JPH04168954A (en) | 1990-10-30 | 1990-10-30 | Stator for commutatorless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04168954A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08275432A (en) * | 1995-04-03 | 1996-10-18 | Shibaura Eng Works Co Ltd | Motor and its manufacturing method |
| JPH09308174A (en) * | 1996-05-10 | 1997-11-28 | Shibaura Eng Works Co Ltd | Molded motor |
| JP2012205441A (en) * | 2011-03-28 | 2012-10-22 | Minebea Co Ltd | Motor device with reducer |
| CN102918270A (en) * | 2010-10-19 | 2013-02-06 | 三菱重工业株式会社 | Hermetically sealed electric motor compressor |
| JP2013537396A (en) * | 2010-09-16 | 2013-09-30 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Motor with power output stage and method for efficient heat transport |
-
1990
- 1990-10-30 JP JP2293851A patent/JPH04168954A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08275432A (en) * | 1995-04-03 | 1996-10-18 | Shibaura Eng Works Co Ltd | Motor and its manufacturing method |
| JPH09308174A (en) * | 1996-05-10 | 1997-11-28 | Shibaura Eng Works Co Ltd | Molded motor |
| JP2013537396A (en) * | 2010-09-16 | 2013-09-30 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Motor with power output stage and method for efficient heat transport |
| US9455609B2 (en) | 2010-09-16 | 2016-09-27 | Robert Bosch Gmbh | Electric motor with a power output stage and with efficient heat transport and method |
| CN102918270A (en) * | 2010-10-19 | 2013-02-06 | 三菱重工业株式会社 | Hermetically sealed electric motor compressor |
| US9273684B2 (en) | 2010-10-19 | 2016-03-01 | Mitsubishi Heavy Industries, Ltd. | Hermetic electric compressor |
| EP2631483A4 (en) * | 2010-10-19 | 2018-01-10 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Hermetically sealed electric motor compressor |
| JP2012205441A (en) * | 2011-03-28 | 2012-10-22 | Minebea Co Ltd | Motor device with reducer |
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