JP2002186216A - Rotor of commutator motor - Google Patents
Rotor of commutator motorInfo
- Publication number
- JP2002186216A JP2002186216A JP2000381829A JP2000381829A JP2002186216A JP 2002186216 A JP2002186216 A JP 2002186216A JP 2000381829 A JP2000381829 A JP 2000381829A JP 2000381829 A JP2000381829 A JP 2000381829A JP 2002186216 A JP2002186216 A JP 2002186216A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- slot
- core
- end plate
- rotor
- 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.)
- Granted
Links
Landscapes
- Motor Or Generator Cooling System (AREA)
- Dc Machiner (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は整流子モータの回転
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 commutator motor rotor.
【０００２】[0002]
【従来の技術】従来の整流子モータの回転子１は、図４
に示す如く、ラジアル方向外側に開き軸方向に沿って延
びるスロットを少なくとも３つ以上有し、回転軸４に装
着されるコア２、コア２のスロットとほぼ同一形状のス
ロットを有し、コア２の軸方向両端面に装着される絶縁
材からなるエンドプレート４、コア２のスロット内に２
スロット以上の間隔をもって軸方向に沿って巻回される
コイル７、回転軸４に装着される冷却ファン５等により
構成され、巻回されたコイル７はワニス等を含浸するこ
とにより固定される。各コイル７は総て整流子６に接続
されており、モータの運転に際し整流子６よりコイル７
に電流が流れ、コイル７は抵抗損失による発熱が生じ
る。このコイル７の発熱を効率よく放出させるため、回
転軸４上に冷却ファン５が装着されており、冷却ファン
５は回転子１と同期して回転する。冷却ファン５により
生じた気流は図５に示す如く、ハウジングに設けられた
吸気口１２を介してモータに流れ、冷却風の一部はコイ
ル７のコア２より露出したコイルエンド部７ａ、７ｂに
当たりコイル７の発熱を奪い排気口１３より外部に放出
される。2. Description of the Related Art A rotor 1 of a conventional commutator motor is shown in FIG.
As shown in the figure, the core 2 has at least three or more slots extending radially outward and extending along the axial direction, the core 2 mounted on the rotating shaft 4, a slot having substantially the same shape as the slot of the core 2, End plate 4 made of an insulating material and mounted on both end surfaces in the axial direction of
It is composed of a coil 7 wound along the axial direction at intervals of slots or more, a cooling fan 5 mounted on the rotating shaft 4, and the like. The wound coil 7 is fixed by impregnating with varnish or the like. All the coils 7 are connected to the commutator 6, and the coils 7 are connected to the commutator 6 during operation of the motor.
And the coil 7 generates heat due to resistance loss. In order to efficiently release the heat generated by the coil 7, a cooling fan 5 is mounted on the rotating shaft 4, and the cooling fan 5 rotates in synchronization with the rotor 1. As shown in FIG. 5, the air flow generated by the cooling fan 5 flows to the motor through an air inlet 12 provided in the housing, and a part of the cooling air hits the coil end portions 7a and 7b exposed from the core 2 of the coil 7. The heat generated by the coil 7 is taken out and discharged to the outside through the exhaust port 13.
【０００３】[0003]
【発明が解決しようとする課題】コイル７の巻線は巻線
機により自動化されており、巻線時にワイヤがスロット
からはみ出すのを防止するためにワイヤは適度なテンシ
ョンをもって各スロットへ一様に巻回され、スロットに
巻回されたコイル束の断面積が最小になるようにコント
ロールされ巻線されている。その際、コイル７の発熱を
放出する重要な働きを持つコイルエンド部７ａ、７ｂは
前記コイル束を重ね合わせて形成されているため、同様
にコイルエンド部７ａ、７ｂの表面積は最小限に成形さ
れ放熱性能向上のためにコイル７の表面積を広げること
は製造上困難である。The winding of the coil 7 is automated by a winding machine. In order to prevent the wire from protruding from the slot during winding, the wire is uniformly applied to each slot with an appropriate tension. The coil bundle is wound and controlled so that the cross-sectional area of the coil bundle wound around the slot is minimized. At this time, since the coil end portions 7a and 7b having an important function of releasing heat generated by the coil 7 are formed by overlapping the coil bundles, the surface area of the coil end portions 7a and 7b is similarly minimized. However, it is difficult to increase the surface area of the coil 7 in order to improve the heat radiation performance.
【０００４】本発明の目的は、上記した従来技術の欠点
をなくし、従来の製造工程を変更せずまた部品数を増こ
となくコイルエンド部の放熱面積を増加させ、コイルの
放熱性能を向上させることである。An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, to increase the heat radiation area of the coil end portion without changing the conventional manufacturing process and without increasing the number of parts, and to improve the heat radiation performance of the coil. That is.
【０００５】[0005]
【課題を解決するための手段】上記目的は、コアの端面
に位置する絶縁材からなるエンドプレートの突起部に軸
方向の溝を設け、溝部の両壁にスロットに巻回されたコ
イルの放熱面を形成することにより達成される。An object of the present invention is to provide an end plate made of an insulating material located on an end face of a core, in which an axial groove is provided on a projection of the end plate, and heat radiation of a coil wound around a slot on both walls of the groove. This is achieved by forming a surface.
【０００６】[0006]
【発明の実施の形態】本発明の一実施形態を示す回転子
を図１を参照して説明する。本発明は以下に述べるコア
端面のエンドプレート以外は上記した回転子とほぼ同じ
であり説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotor according to an embodiment of the present invention will be described with reference to FIG. The present invention is substantially the same as the above-described rotor except for an end plate at the core end face described below, and a description thereof will be omitted.
【０００７】前記コア２の両端面に位置する絶縁材から
なるエンドプレート３の突起部３ａに軸方向の溝部８を
設けたのが本発明の特徴である。回転子１のワイヤは巻
線時任意のスロットに回転軸４と平行に挿入された後溝
部８を越えて他のスロットに同様に挿入され巻回するこ
とにより、溝部８は各スロットに巻回されたコイル７に
より挟まれた空間として形成される。A feature of the present invention is that an axial groove 8 is provided on the projection 3a of the end plate 3 made of an insulating material located at both end surfaces of the core 2. The wire of the rotor 1 is inserted into an arbitrary slot at the time of winding in parallel with the rotating shaft 4 and then inserted into another slot in the same manner and wound beyond the groove 8, so that the groove 8 is wound around each slot. Is formed as a space sandwiched by the coil 7 that has been formed.
【０００８】上記のように構成した結果、空間の軸方向
の両壁を形成するコイル７の表面が放熱面９となるため
コイルエンド部７ａ、７ｂの放熱表面積が増加しコイル
７の放熱性能を向上させることができる。上記実施形態
を示す図1にはエンドプレート３の溝部８をコア２の両
方に設けているが、一側のエンドプレート３のみに設け
てもよい。As a result of the above construction, the surface of the coil 7 forming both walls in the axial direction of the space becomes the heat radiation surface 9, so that the heat radiation surface area of the coil end portions 7a and 7b increases, and the heat radiation performance of the coil 7 is improved. Can be improved. Although the groove 8 of the end plate 3 is provided on both of the cores 2 in FIG. 1 showing the above embodiment, it may be provided on only one end plate 3.
【０００９】本発明の他の実施形態に係る回転子１を図
２に示す。前記溝部８およびスロット部の底部を形成し
ているエンドプレート３の円周部にコイルエンド７ａ、
７ｂ側の回転軸４に通ずる孔１０を設けたものである。
この結果コイル７の固定に使用されるワニスが必要以上
に塗布された場合でもワニスは前記孔１０を介して回転
軸４に流れ落ちるため、前記溝部８がワニスにより埋没
することがなくなりコイル７の放熱面９が常に形成され
る。FIG. 2 shows a rotor 1 according to another embodiment of the present invention. Coil ends 7a are provided on the circumference of the end plate 3 forming the bottom of the groove 8 and the slot.
A hole 10 communicating with the rotary shaft 4 on the 7b side is provided.
As a result, even when the varnish used for fixing the coil 7 is applied more than necessary, the varnish flows down to the rotating shaft 4 through the hole 10, so that the groove 8 is not buried by the varnish, and the heat of the coil 7 is radiated. Surface 9 is always formed.
【００１０】本発明の更に他の実施形態に係る回転子１
を図３に示す。回転子１はエンドプレート３のスロット
底部の軸方向面をコア２側よりコイルエンド部７ａ、７
ｂに下る傾斜部１１を設けたものである。この結果ワイ
ヤは傾斜部１１に沿って巻回されるため、半径方向に沿
った長さ分１コイルの全長が短くなって抵抗値が減少
し、コイル７の発熱量が低減される。また、傾斜部１１
によりコイル７も傾斜するためエンドプレート３の突起
部３ｂの露出部分が広がり回転子１の回転時、突起部３
ｂが冷却ファンとして働き更なるコイル７の放熱性能向
上を図ることができる。[0010] A rotor 1 according to still another embodiment of the present invention.
Is shown in FIG. The rotor 1 is configured such that the axial surface of the bottom of the slot of the end plate 3 is placed on the coil end portions 7a, 7a from the core 2 side.
This is provided with an inclined portion 11 descending to b. As a result, since the wire is wound along the inclined portion 11, the total length of one coil is shortened by the length in the radial direction, the resistance value is reduced, and the heat value of the coil 7 is reduced. Also, the inclined portion 11
As a result, the exposed portion of the projection 3b of the end plate 3 expands because the coil 7 is also inclined.
b serves as a cooling fan, and the heat radiation performance of the coil 7 can be further improved.
【００１１】[0011]
【発明の効果】以上のように本発明によれば、コア端面
のエンドプレートの突起部に軸方向の溝を設けたので、
溝部には両壁がコイルにより形成された空間となり、両
壁を形成するコイルの表面が放熱面となりコイルエンド
部のコイルの放熱表面積が増加しコイルの放熱性能を向
上させることができる。また従来のエンドプレートに軸
方向の溝を設けるという極めて簡単な構造で、製造工程
の変更もなく部品数を増やさず低コストで有効な回転子
を提供できるようになる。As described above, according to the present invention, the axial groove is provided in the projection of the end plate on the end face of the core.
In the groove, both walls become a space formed by the coil, and the surface of the coil forming both walls becomes a heat radiating surface, so that the heat radiating surface area of the coil at the coil end portion increases, and the heat radiating performance of the coil can be improved. In addition, with a very simple structure in which a conventional end plate is provided with an axial groove, an effective rotor can be provided at low cost without changing the manufacturing process and without increasing the number of parts.
【図１】本発明回転子の一実施形態を示す一部断面側面
図。FIG. 1 is a partially sectional side view showing an embodiment of a rotor of the present invention.
【図２】本発明回転子の他の実施形態を示す一部断面側
面図。FIG. 2 is a partial cross-sectional side view showing another embodiment of the rotor of the present invention.
【図３】本発明回転子の更に他の実施形態を示す一部断
面側面図。FIG. 3 is a partial sectional side view showing still another embodiment of the rotor of the present invention.
【図４】従来の回転子の一例を示す一部断面側面図。FIG. 4 is a partially sectional side view showing an example of a conventional rotor.
【図５】モータ内の気流の流れを示す説明用側面図。FIG. 5 is an explanatory side view showing a flow of an airflow in the motor.
１は回転子、２はコア、３はエンドプレート、３ａ、３
ｂはエンドプレート３の突起部、４は回転軸、５は冷却
ファン、６は整流子、７ａ、７bはコイルエンド、８は
エンドプレート３の軸方向溝部、９はコイル放熱表面
部、１１は孔、１１はエンドプレート３のスロット底部
の傾斜部、１２は吸気口、１３は排気口。1 is a rotor, 2 is a core, 3 is an end plate, 3a, 3
b is a projection of the end plate 3, 4 is a rotating shaft, 5 is a cooling fan, 6 is a commutator, 7a and 7b are coil ends, 8 is an axial groove of the end plate 3, 9 is a coil heat dissipation surface, and 11 is A hole, 11 is an inclined portion at the bottom of the slot of the end plate 3, 12 is an intake port, and 13 is an exhaust port.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H604 AA03 AA05 BB01 CC02 CC13 DA14 DB01 PB03 PC01 QA01 QA04 QA08 QB01 QB14 QB16 QB17 5H605 AA01 BB05 CC03 CC09 DD03 DD07 DD11 EA14 GG07 GG14 5H609 BB06 PP02 PP07 PP09 QQ02 QQ08 QQ14 RR03 RR07 RR10 RR16 RR24 RR27 RR33 RR36 RR38 RR42 5H623 AA08 BB07 GG01 HH10 JJ03 JJ06 LL02 LL08 LL09 LL14 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H604 AA03 AA05 BB01 CC02 CC13 DA14 DB01 PB03 PC01 QA01 QA04 QA08 QB01 QB14 QB16 QB17 5H605 AA01 BB05 CC03 CC09 DD03 DD07 DD11 EA14 GG07 GG14 5H609 BB06 Q02PP07 PP07 Q07 RR09 RR10 RR16 RR24 RR27 RR33 RR36 RR38 RR42 5H623 AA08 BB07 GG01 HH10 JJ03 JJ06 LL02 LL08 LL09 LL14
Claims (3)
軸方向に沿って延びたスロットを有するコアと、コアの
スロット内に軸方向に沿って巻回されるコイルと、コア
のスロットとほぼ同じ形状のスロットを有し、コアとコ
イル間の絶縁を保つための絶縁材からなり、コアの端面
に位置するエンドプレートを備えた整流子モータにおい
て、 前記エンドプレートの突起部に軸方向の溝を設けたこと
を特徴とする整流子モータの回転子。1. A core mounted on a rotating shaft and having a slot that opens radially outward and extends along an axial direction, a coil that is axially wound in a slot of the core, and a slot of the core. A commutator motor having slots of substantially the same shape, made of an insulating material for maintaining insulation between the core and the coil, and having an end plate located at an end face of the core, wherein a protruding portion of the end plate has an axial direction. A rotor for a commutator motor, wherein a groove is provided.
ット底部に回転軸に通ずる孔を設けたことを特徴とする
請求項１記載の整流子モータの回転子。2. The commutator motor rotor according to claim 1, wherein a hole communicating with a rotating shaft is provided in a groove bottom or a slot bottom of the end plate.
方向に傾斜させたことを特徴とする請求項１記載の整流
子モータの回転子。3. The commutator motor rotor according to claim 1, wherein the slot bottom of the end plate is inclined in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000381829A JP3918428B2 (en) | 2000-12-15 | 2000-12-15 | Commutator motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000381829A JP3918428B2 (en) | 2000-12-15 | 2000-12-15 | Commutator motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002186216A true JP2002186216A (en) | 2002-06-28 |
| JP3918428B2 JP3918428B2 (en) | 2007-05-23 |
Family
ID=18849756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000381829A Expired - Fee Related JP3918428B2 (en) | 2000-12-15 | 2000-12-15 | Commutator motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3918428B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7449810B2 (en) | 2004-12-15 | 2008-11-11 | Hitachi Koki Co., Ltd. | Electric motor and electric tool having the motor |
| KR100961779B1 (en) | 2009-11-17 | 2010-06-07 | 주식회사 해동산업 | Air cooled capstan of drawing machine |
| JP2015198527A (en) * | 2014-04-02 | 2015-11-09 | 三菱電機株式会社 | Rotary electric machine |
-
2000
- 2000-12-15 JP JP2000381829A patent/JP3918428B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7449810B2 (en) | 2004-12-15 | 2008-11-11 | Hitachi Koki Co., Ltd. | Electric motor and electric tool having the motor |
| CN100442641C (en) * | 2004-12-15 | 2008-12-10 | 日立工机株式会社 | Electric motor and electric tool having the motor |
| KR100961779B1 (en) | 2009-11-17 | 2010-06-07 | 주식회사 해동산업 | Air cooled capstan of drawing machine |
| JP2015198527A (en) * | 2014-04-02 | 2015-11-09 | 三菱電機株式会社 | Rotary electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3918428B2 (en) | 2007-05-23 |
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