JPH0315255A - Axial gap type dc brushless motor - Google Patents
Axial gap type dc brushless motorInfo
- Publication number
- JPH0315255A JPH0315255A JP15027089A JP15027089A JPH0315255A JP H0315255 A JPH0315255 A JP H0315255A JP 15027089 A JP15027089 A JP 15027089A JP 15027089 A JP15027089 A JP 15027089A JP H0315255 A JPH0315255 A JP H0315255A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- rotor
- core
- stator core
- magnetic
- 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
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000006247 magnetic powder Substances 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 7
- 239000000696 magnetic material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000012256 powdered iron Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Brushless Motors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、アキシャルギャップ型直流ブラシレスモー夕
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an axial gap type DC brushless motor.
従来この種のアキシャルギャップ型直流ブラシレスモー
タには、第２図に示す構造のものがあった。同図（ａ）
はアキシャルギセップ型直流ブラシレスモータ縦断面図
、同図（ｂ）はステータの平面図である。図において、
１はロー夕、２はステータコイルであり、ロータ１はス
テータコイル２の上に所定の間隙を設けて配置され、ロ
ータ１の主軸９は上側ケーシングに軸受８で回転自在に
支持されている。ステータフィル２は複数個（図では６
個）環状に配置され、下側ケーシング６に収容されいる
。また、各コイルの中央部は空間３となっている。Conventionally, this type of axial gap type DC brushless motor has a structure shown in FIG. 2. Figure (a)
1 is a vertical cross-sectional view of an axial guisep type direct current brushless motor, and FIG. 2(b) is a plan view of the stator. In the figure,
1 is a rotor, 2 is a stator coil, the rotor 1 is arranged above the stator coil 2 with a predetermined gap, and the main shaft 9 of the rotor 1 is rotatably supported by a bearing 8 in the upper casing. There are multiple stator fills 2 (6 in the figure).
) are arranged in an annular shape and housed in the lower casing 6. Moreover, the center part of each coil is a space 3.
しかしながら上記従来構造のアキシャルギャップ型直流
ブラシレスモータにおいては、下記のような問題点を有
していた。即ち、ステータコイル２の中央部が空間３と
なっているため、該ステータコイル２の積層厚がギャッ
プ（間隙）長さとして存在すると、高い出力を得ること
が困難であった。更に、ステータコイル２の中央部が空
間３となっているため、ステータフイル２の発生熱を効
率良く放熱することができないという問題もあった。However, the above conventional axial gap type DC brushless motor has the following problems. That is, since the center portion of the stator coil 2 is the space 3, it is difficult to obtain high output if the laminated thickness of the stator coil 2 exists as a gap length. Furthermore, since the center portion of the stator coil 2 is the space 3, there is also the problem that the heat generated by the stator file 2 cannot be efficiently radiated.
本発明は上述の点に鑑みてなされたもので、上記問題点
を除去し、高出力を得ることが可能で、且つステータコ
イルからの発熱を効率良く放熱することがでるアキシャ
ルギャップ型直流ブラシレスモータを提供することにあ
る。The present invention has been made in view of the above points, and provides an axial gap type DC brushless motor that eliminates the above problems, can obtain high output, and can efficiently radiate heat generated from the stator coil. Our goal is to provide the following.
上記課題を解決するため本発明は、ステータとの間に所
定の間隙をおいてロータを配置した構成のアキシャルギ
ャップ型直流モータにおいて、ロータに永久磁石を用い
ると共に、前記ロー夕に対向する凸状の磁極を有する磁
性体粉末を固化してなる粉末固化鉄心をステータコアと
して用い、該ステータコアの前記磁極にステータフイル
を設けたことを特徴とする．
また、ステータを収容するステータ室内の空間に樹脂を
充填した密閉構造としたことを特徴とする。In order to solve the above problems, the present invention provides an axial gap type DC motor in which a rotor is arranged with a predetermined gap between it and a stator, in which a permanent magnet is used for the rotor, and a convex shape facing the rotor is used. The invention is characterized in that a powder solidified iron core formed by solidifying magnetic powder having magnetic poles is used as the stator core, and a stator file is provided on the magnetic poles of the stator core. Further, the present invention is characterized in that it has a sealed structure in which the space inside the stator chamber that accommodates the stator is filled with resin.
アキシャルギャップ型直流ブラシレスモー夕を上記の如
く構成することにより、ステータコアの磁極先端とロー
タとの間が実質的にモータのギャップとなるから、該ギ
ャップ長が小さくなり、ロータである永久磁石の発生す
る磁界を高くとることができる．しかもステータに粉末
鉄心を用いることにより、ロータ回転により生じる回転
磁界による渦電流損失を最小に抑えることができる．
また、ステータ室内の空間に樹脂を充填した密閉構造と
することにより、この充填した樹脂により効率のよい放
熱ができる。By configuring the axial gap type DC brushless motor as described above, the gap between the magnetic pole tips of the stator core and the rotor essentially becomes the gap of the motor, so the gap length becomes small and the permanent magnets that are the rotor are generated. The magnetic field can be set high. Furthermore, by using a powdered iron core in the stator, eddy current loss due to the rotating magnetic field generated by rotor rotation can be minimized. Further, by forming a sealed structure in which the space inside the stator chamber is filled with resin, efficient heat radiation can be achieved by the filled resin.
以下、本発明の一実施例を図面に基づいて説明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図は本発明に係るアキシャルギャップ型直流ブラシ
レスモー夕の構造を示す図で、同図（ａ）は縦断面図、
同図（ｂ）はステータの平面図である。図において、１
は永久磁石からなる口−タ、２はステータフイルであり
、ロータ１はステータコイル２の上に所定の間隙を設け
て配置され、ロータ１の主軸９は上側ケーシングに軸受
８で回転自在に支持されている．５はステータコアで、
該ステータコア５は磁性体粉末を固化して形成した粉末
固化鉄心であり、該ステータコア５にはロータ１に向か
う凸状の磁極５ａが環状に複数個（図では６個）配列さ
れている。ステータコイル２はこの環状に配列された磁
極５ａのそれぞれに取り付けられている。ステータコア
５及びステータコイル２は下側ケーシング６に収容され
、該下側ケーシング６の空間部には樹脂材４が充填され
ている。FIG. 1 is a diagram showing the structure of an axial gap type DC brushless motor according to the present invention, and FIG. 1(a) is a longitudinal cross-sectional view;
FIG. 2B is a plan view of the stator. In the figure, 1
is a rotor made of a permanent magnet, 2 is a stator file, the rotor 1 is placed above the stator coil 2 with a predetermined gap, and the main shaft 9 of the rotor 1 is rotatably supported by a bearing 8 in the upper casing. It has been done. 5 is the stator core,
The stator core 5 is a powder solidified iron core formed by solidifying magnetic powder, and the stator core 5 has a plurality of convex magnetic poles 5a (six in the figure) arranged in an annular shape facing toward the rotor 1. The stator coil 2 is attached to each of the annularly arranged magnetic poles 5a. The stator core 5 and the stator coil 2 are housed in a lower casing 6, and a space in the lower casing 6 is filled with a resin material 4.
上記ステータコア５を構或する粉末固化鉄心は、磁性体
を粉末にし、この磁性体粉末を絶縁性の樹脂材で被覆し
固化し、ステータコア５の形状に形成したものである。The powder solidified iron core constituting the stator core 5 is formed by pulverizing a magnetic material, covering the magnetic powder with an insulating resin material, and solidifying it into the shape of the stator core 5.
アキシャルギケップ型直流ブラシレスモータを上記の如
く構成することにより、ロータ１と磁極５ａの間隔が小
さく、永久磁石であるロータ１から、磁界を高くとるこ
とができ、モータの出力に大きく影響を与える有効磁束
密度を大きくすることが可能となる。又、永久磁石であ
るロータ１が回転することにより、回転磁束が発生し、
これによりステータコア５の内部には渦電流が径方向に
流れるが、ステータコア５は磁性体粉末を絶縁性樹脂材
で被覆しているので、渦電流の流れを防止するから、渦
電流損失を最小にすることができる。By configuring the axial hookup type DC brushless motor as described above, the distance between the rotor 1 and the magnetic pole 5a is small, and a high magnetic field can be generated from the rotor 1, which is a permanent magnet, which greatly affects the output of the motor. It becomes possible to increase the effective magnetic flux density. Also, as the rotor 1, which is a permanent magnet, rotates, rotating magnetic flux is generated.
As a result, eddy currents flow in the radial direction inside the stator core 5, but since the stator core 5 has magnetic powder coated with an insulating resin material, this prevents the flow of eddy currents, thereby minimizing eddy current loss. can do.
さらに、ステータ室となる下側ケーシング６内の空間に
は樹脂材を充填しているので、ステ一一タフイル２及び
ステータコア５から発生する熱を効率良く下側ケーシン
グ６から外部に放熱できる。Furthermore, since the space within the lower casing 6 that becomes the stator chamber is filled with a resin material, the heat generated from the stator filler 2 and the stator core 5 can be efficiently radiated from the lower casing 6 to the outside.
しかも局部的な温度上昇を防止することができる。Furthermore, local temperature increases can be prevented.
以上説明したように本発明によれば、下記のような優れ
た効果が得られる。As explained above, according to the present invention, the following excellent effects can be obtained.
■ギャップ長を小さくし、ロータである永久磁石の発生
する磁束密度を高くすることができるからモータの出力
を大きくできる。■The gap length can be reduced and the magnetic flux density generated by the permanent magnet that is the rotor can be increased, so the output of the motor can be increased.
■また、ステータに粉末鉄心を用いることにより、ロー
タ回転により生じる回転磁界による渦電流損失を最小に
抑えることができる。(2) Also, by using a powdered iron core in the stator, eddy current loss due to the rotating magnetic field generated by rotor rotation can be minimized.
■また、ステータを収容するステータ室内の空間に樹脂
を充填した密閉構造としたことにより、コイル及びステ
ータコアから発生する熱が効率よく外部に放射される。(2) Furthermore, by adopting a sealed structure in which the space within the stator chamber housing the stator is filled with resin, heat generated from the coils and stator core is efficiently radiated to the outside.
第１図は本発明に係るアキシャルギャップ型直流ブラシ
レスモー夕の構造を示す図で、同図（ａ）は縦断面図、
同図（ｂ）はステータ平面図、第２図は従来のアキシャ
ルギャップ型直流ブラシレスモータの構造を示す図で、
同１１ｆｆｌ（ａ）は縦断面図、同図（ｂ）はステータ
平面図である。
図中、１・・・・ロー夕、２・・・・ステータコイル、
４・・・・充填した樹脂材、５・・・・ステータコア、
５ａ・・・・磁極、６・・・・下側ケーシング、７・・
・・上側ケーシング、８・・・・軸受。
ｆ８哨面目
（久）
ス−Ｆ−７千（自）図
（ｂ〕
，Ｌ％明ｎ丁キソ０レｋ；ノフ゛｛虹１石＝フ゛ウンし
入ｔ−ｙ第１FIG. 1 is a diagram showing the structure of an axial gap type DC brushless motor according to the present invention, and FIG. 1(a) is a longitudinal cross-sectional view;
Figure (b) is a plan view of the stator, and Figure 2 is a diagram showing the structure of a conventional axial gap type DC brushless motor.
11ffl(a) is a longitudinal sectional view, and FIG. 11(b) is a plan view of the stator. In the figure, 1: rotor coil, 2: stator coil,
4...Filled resin material, 5...Stator core,
5a...Magnetic pole, 6...Lower casing, 7...
...Upper casing, 8...Bearing. f8 clock face (k) Su-F-7,000 (self) figure (b), L% Ming n d kiso 0 re k;
Claims (2)
置した構成のアキシャルギャップ型直流モータにおいて
、前記ロータに永久磁石を用いると共に前記ロータに対
向する凸状の磁極を有する磁性体粉末を固化してなる粉
末固化鉄心をステータコアとして用い、該ステータコア
の前記磁極にステータコイルを設けたことを特徴とする
アキシャルギャップ型直流ブラシレスモータ。(1) In an axial gap type DC motor having a rotor disposed with a predetermined gap between the rotor and the stator, a permanent magnet is used in the rotor, and magnetic powder having a convex magnetic pole facing the rotor is used. An axial gap type DC brushless motor characterized in that a solidified powder iron core is used as a stator core, and a stator coil is provided at the magnetic pole of the stator core.
脂を充填した密閉構造としたことを特徴とする請求項（
１）記載のアキシャルギャップ型直流ブラシレスモータ
。(2) Claim (2) characterized in that the space inside the stator chamber housing the stator is formed into a sealed structure filled with resin.
1) The axial gap type DC brushless motor described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15027089A JPH0315255A (en) | 1989-06-12 | 1989-06-12 | Axial gap type dc brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15027089A JPH0315255A (en) | 1989-06-12 | 1989-06-12 | Axial gap type dc brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0315255A true JPH0315255A (en) | 1991-01-23 |
Family
ID=15493278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15027089A Pending JPH0315255A (en) | 1989-06-12 | 1989-06-12 | Axial gap type dc brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0315255A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5519270A (en) * | 1992-08-19 | 1996-05-21 | Fujitsu Limited | Spindle motor and disk drive having the same |
| WO2002020294A1 (en) * | 2000-08-30 | 2002-03-14 | Abb Ab | A hybrid drive device |
| KR20030068702A (en) * | 2002-02-16 | 2003-08-25 | 효성버턴 주식회사 | Method for producing luminous button |
| AU2004231267B2 (en) * | 2004-03-09 | 2006-12-07 | Lg Electronics Inc | Method for manufacturing stator of brushless direct current electric motor, and stator of brushless direct current electric motor manufactured by the method |
| WO2007073083A1 (en) * | 2005-12-21 | 2007-06-28 | Daewoo Electronics Corporation | Flat-type single phase brushless dc motor |
| JP2007230287A (en) * | 2006-02-28 | 2007-09-13 | Railway Technical Res Inst | Vibrationproofing method of body for railway rolling stock and body for railway rolling stock |
| WO2011083530A1 (en) * | 2010-01-06 | 2011-07-14 | 株式会社神戸製鋼所 | Axial gap type brushless motor |
| US11317898B2 (en) | 2017-08-11 | 2022-05-03 | Wk Holdings Inc. | Biomaterial collection method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60141157A (en) * | 1983-12-27 | 1985-07-26 | Yoshiteru Takahashi | Brushless core type motor |
| JPS63274337A (en) * | 1987-04-28 | 1988-11-11 | Canon Inc | Brushless motor |
-
1989
- 1989-06-12 JP JP15027089A patent/JPH0315255A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60141157A (en) * | 1983-12-27 | 1985-07-26 | Yoshiteru Takahashi | Brushless core type motor |
| JPS63274337A (en) * | 1987-04-28 | 1988-11-11 | Canon Inc | Brushless motor |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5519270A (en) * | 1992-08-19 | 1996-05-21 | Fujitsu Limited | Spindle motor and disk drive having the same |
| WO2002020294A1 (en) * | 2000-08-30 | 2002-03-14 | Abb Ab | A hybrid drive device |
| US7325637B2 (en) | 2000-08-30 | 2008-02-05 | Carnelian Cordless Llc | Hybrid drive device |
| KR20030068702A (en) * | 2002-02-16 | 2003-08-25 | 효성버턴 주식회사 | Method for producing luminous button |
| AU2004231267B2 (en) * | 2004-03-09 | 2006-12-07 | Lg Electronics Inc | Method for manufacturing stator of brushless direct current electric motor, and stator of brushless direct current electric motor manufactured by the method |
| WO2007073083A1 (en) * | 2005-12-21 | 2007-06-28 | Daewoo Electronics Corporation | Flat-type single phase brushless dc motor |
| JP2007230287A (en) * | 2006-02-28 | 2007-09-13 | Railway Technical Res Inst | Vibrationproofing method of body for railway rolling stock and body for railway rolling stock |
| WO2011083530A1 (en) * | 2010-01-06 | 2011-07-14 | 株式会社神戸製鋼所 | Axial gap type brushless motor |
| JP2012050312A (en) * | 2010-01-06 | 2012-03-08 | Kobe Steel Ltd | Axial gap type brushless motor |
| CN102656776A (en) * | 2010-01-06 | 2012-09-05 | 株式会社神户制钢所 | Axial gap type brushless motor |
| US9160219B2 (en) | 2010-01-06 | 2015-10-13 | Kobe Steel, Ltd. | Axial gap type brushless motor |
| US11317898B2 (en) | 2017-08-11 | 2022-05-03 | Wk Holdings Inc. | Biomaterial collection method |
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