JPH06178501A - Totally enclosed outer-fan type rotary electric machine - Google Patents
Totally enclosed outer-fan type rotary electric machineInfo
- Publication number
- JPH06178501A JPH06178501A JP32451892A JP32451892A JPH06178501A JP H06178501 A JPH06178501 A JP H06178501A JP 32451892 A JP32451892 A JP 32451892A JP 32451892 A JP32451892 A JP 32451892A JP H06178501 A JPH06178501 A JP H06178501A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- boss
- spring
- fan
- electric machine
- 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
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、全閉外扇形回転電機
の外扇の取付け構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting an outer fan of a totally enclosed outer fan type rotating electric machine.
【０００２】[0002]
【従来の技術】全閉外扇形回転電機の一般構造は、フレ
ームに固定される固定子の内側に空隙を介して配置され
る回転子と、この回転子を固定する軸を軸受を介して支
承してフレームに取付けられるブラケットとからなる。
そしてブラケットを貫通する軸の端部に外扇を取付けて
ファンカバーで覆う。2. Description of the Related Art The general structure of a fully-enclosed fan-type rotating electric machine is that a rotor, which is arranged inside a stator fixed to a frame with a gap, and a shaft for fixing the rotor are supported by bearings. And a bracket that can be attached to the frame.
An external fan is attached to the end of the shaft that penetrates the bracket and is covered with a fan cover.
【０００３】図２は従来例の要部の断面図である。図に
おいて、軸受１に支承されブラケット２を貫通する軸２
３の円柱状の端部２３ａに、金属製の外扇２４の内周が
円筒状をなすボス２４ａを嵌合する。ねじ穴を持つボス
２４ａにボルト２５をねじ込み、その先端を端部２３ａ
に設けた凹部２３ｂに押し当てる。FIG. 2 is a sectional view of a main part of a conventional example. In the figure, a shaft 2 supported by a bearing 1 and passing through a bracket 2
A boss 24a having an inner circumference of a metal outer fan 24 having a cylindrical shape is fitted to the cylindrical end portion 23a of No. 3. The bolt 25 is screwed into the boss 24a having the screw hole, and the tip thereof is connected to the end portion 23a.
It is pressed against the concave portion 23b provided in the.
【０００４】[0004]
【発明が解決しようとする課題】前記の従来例では、端
部２３ａとボス２４ａとの嵌合がゆるくて一様な面圧が
ないから熱流Ｈ2 が少なくて熱伝達効率が低く、外扇２
４が軸２３を介して軸受１を冷却する効果が少ない。ま
た凹部２３ｂに応力集中が生じるという問題がある。In the above-mentioned conventional example, since the end portion 23a and the boss 24a are loosely fitted and there is no uniform surface pressure, the heat flow H 2 is small and the heat transfer efficiency is low. Two
4 has less effect of cooling the bearing 1 via the shaft 23. There is also a problem that stress concentration occurs in the recess 23b.
【０００５】この発明の目的は、よく冷却される外扇か
ら軸への熱伝達効率を高めて軸受冷却効果を向上し、あ
わせて軸端における応力集中を防止できる全閉外扇形回
転電機を提供することにある。An object of the present invention is to provide a fully-closed outer fan type rotating electric machine which can improve the heat transfer efficiency from a well-cooled outer fan to a shaft to improve the bearing cooling effect and also prevent stress concentration at the shaft end. Especially.
【０００６】[0006]
【課題を解決するための手段】この発明の全閉外扇形回
転電機は、軸受に支承されてブラケットを貫通する軸の
端部のテーパ軸に金属製の外扇のボスを軸の端面が突出
するようにテーパ結合し、軸の端面とボスの端面との軸
方向距離より全圧縮高さが小さいばねをボスの端面に当
接させ、ボルトの頭を軸の端面に当接させてばねを圧縮
させるものである。このとき、ボルトの頭と軸の端面と
の間に座金を介装するとよい。In the fully-closed outer fan type electric rotating machine of the present invention, the end surface of the shaft is a metal outer fan boss protruding from a tapered shaft at the end of the shaft supported by a bearing and penetrating the bracket. As shown in the figure, a spring with a total compression height smaller than the axial distance between the shaft end surface and the boss end surface is brought into contact with the boss end surface, and the bolt head is brought into contact with the shaft end surface to compress the spring. It is what makes me. At this time, a washer may be interposed between the head of the bolt and the end surface of the shaft.
【０００７】[0007]
【作用】図１を参照する。ボルト５が発生するばね６の
圧縮力は、テーパ結合するテーパ軸３ａとボス４ａとを
均一に密着させ嵌合面圧を高める。このため、熱流Ｈ1
が大きくて熱伝達効率が高く、よく冷却されている外扇
４が軸３を介して軸受１を冷却する効果が大きい。また
軸３の端面とボス４ａの端面との軸方向距離を適正に保
てば、ばね６の力、すなわちテーパ軸３ａとボス４ａと
の嵌合面圧を高くて適正な値に維持管理できる。Operation Referring to FIG. The compressive force of the spring 6 generated by the bolt 5 makes the taper shaft 3a and the boss 4a, which are taper-joined, uniformly adhere to each other, thereby increasing the fitting surface pressure. Therefore, the heat flow H 1
Is large, the heat transfer efficiency is high, and the well-cooled outer fan 4 has a large effect of cooling the bearing 1 via the shaft 3. Further, if the axial distance between the end surface of the shaft 3 and the end surface of the boss 4a is properly maintained, the force of the spring 6, that is, the fitting surface pressure between the tapered shaft 3a and the boss 4a can be maintained high and maintained at an appropriate value. .
【０００８】[0008]
【実施例】この発明の全閉外扇形回転電機の構造は、フ
レームに固定される固定子の内側に空隙を介して配置さ
れる回転子と、この回転子を固定する軸を軸受を介して
支承してフレームに取付けられるブラケットとからな
る。そしてブラケットを貫通する軸の端部に外扇を取付
けてファンカバーで覆う点で前記の従来例と同一であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a totally enclosed fan-type rotary electric machine according to the present invention is such that a rotor arranged inside a stator fixed to a frame with a gap and a shaft for fixing the rotor supported by a bearing. And a bracket that can be attached to the frame. The external fan is attached to the end of the shaft that penetrates the bracket and is covered with a fan cover, which is the same as the conventional example.
【０００９】図１は実施例の要部の断面図である。図に
おいて、軸受１に支承されてブラケット２を貫通する軸
３の端部のテーパ軸３ａに、金属製の外扇４のボス４ａ
を軸３の端面が突出するようにテーパ結合する。軸３の
端面とボス４ａの端面との軸方向距離より全圧縮高さが
小さいばね６をボス４ａの端面に当接させ、ボルト５の
頭を軸３の端面に当接させてばね６を圧縮させる。この
とき、ばね６はばね座金でもよいが皿ばねがよいし、ボ
ルト５の頭と軸３の端面との間に座金７を介装するとよ
い。また外扇４の抜き取り用の穴８を複数設けるとよ
い。なお、この発明において、ボルト５の頭は、ナット
も含む。FIG. 1 is a sectional view of the essential part of the embodiment. In the figure, a boss 4a of a metallic outer fan 4 is attached to a tapered shaft 3a at an end of a shaft 3 supported by a bearing 1 and penetrating a bracket 2.
Is tapered so that the end surface of the shaft 3 projects. A spring 6 whose total compression height is smaller than the axial distance between the end surface of the shaft 3 and the end surface of the boss 4a is brought into contact with the end surface of the boss 4a, and the head of the bolt 5 is brought into contact with the end surface of the shaft 3 to secure the spring 6 in place. Compress. At this time, the spring 6 may be a spring washer but may be a disc spring, or a washer 7 may be interposed between the head of the bolt 5 and the end surface of the shaft 3. Further, it is preferable to provide a plurality of holes 8 for extracting the outer fan 4. In addition, in this invention, the head of the bolt 5 also includes a nut.
【００１０】このような構造によれば、ボルト５が軸３
の端面に当接して発生するばね６の圧縮力は、テーパ結
合するテーパ軸３ａとボス４ａとを均一に密着させ嵌合
面圧を高める。このため、熱流Ｈ1 が大きくて熱伝達効
率が高く、よく冷却されている外扇４が軸３を介して軸
受１を冷却する効果が大きい。また軸３の端面とボス４
ａの端面との軸方向距離を適正に保てば、ばね６の力、
すなわちテーパ軸３ａとボス４ａとの嵌合面圧を高くて
適正な値に維持管理できる。According to such a structure, the bolt 5 is attached to the shaft 3
The compressive force of the spring 6 that abuts against the end surface of the spring makes the taper shaft 3a and the boss 4a that are taper-joined uniformly adhere to each other, thereby increasing the fitting surface pressure. Therefore, the heat flow H 1 is large, the heat transfer efficiency is high, and the well-cooled outer fan 4 has a great effect of cooling the bearing 1 via the shaft 3. Also, the end face of the shaft 3 and the boss 4
If the axial distance from the end face of a is properly maintained, the force of spring 6,
That is, the fitting surface pressure between the taper shaft 3a and the boss 4a can be increased and maintained at an appropriate value.
【００１１】[0011]
【発明の効果】この発明の全閉外扇形回転電機は、金属
製の外扇と軸とをテーパ結合するので、よく冷却される
外扇から軸への熱伝達効率を高めて軸受冷却効果を向上
し、あわせて軸端における応力集中を防止できるという
効果がある。In the fully-enclosed outer fan type rotary electric machine of the present invention, the metal outer fan and the shaft are taper-coupled, so that the heat transfer efficiency from the well-cooled outer fan to the shaft is improved and the bearing cooling effect is improved. However, there is also an effect that stress concentration at the shaft end can be prevented.
【図１】実施例の要部の断面図FIG. 1 is a sectional view of a main part of an embodiment.
【図２】従来例の要部の断面図FIG. 2 is a sectional view of a main part of a conventional example.
１ 軸受 ２ ブラケッ
ト ３ 軸 ３ａ テーパ軸 ４ 外扇 ４ａ ボス ５ ボルト ６ ばね Ｈ1 熱流1 bearing 2 bracket 3 shaft 3a taper shaft 4 outer fan 4a boss 5 bolt 6 spring H 1 heat flow
Claims (2)
の端部のテーパ軸に金属製の外扇のボスを軸の端面が突
出するようにテーパ結合し、軸の端面とボスの端面との
軸方向距離より全圧縮高さが小さいばねをボスの端面に
当接させ、ボルトの頭を軸の端面に当接させてばねを圧
縮させることを特徴とする全閉外扇形回転電機。1. A boss of a metal outer fan is taper-coupled to a taper shaft of an end of a shaft supported by a bearing and penetrating a bracket so that an end face of the shaft is projected, and an end face of the shaft and an end face of the boss are formed. A fully-closed fan-type rotary electric machine in which a spring having a total compression height smaller than the axial distance is brought into contact with the end surface of the boss, and the head of the bolt is brought into contact with the end surface of the shaft to compress the spring.
て、ボルトの頭と軸の端面との間に座金を介装すること
を特徴とする全閉外扇形回転電機。2. The fully-closed fan-type rotary electric machine according to claim 1, wherein a washer is interposed between the head of the bolt and the end face of the shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32451892A JPH06178501A (en) | 1992-12-04 | 1992-12-04 | Totally enclosed outer-fan type rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32451892A JPH06178501A (en) | 1992-12-04 | 1992-12-04 | Totally enclosed outer-fan type rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06178501A true JPH06178501A (en) | 1994-06-24 |
Family
ID=18166699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32451892A Pending JPH06178501A (en) | 1992-12-04 | 1992-12-04 | Totally enclosed outer-fan type rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06178501A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08223884A (en) * | 1995-02-13 | 1996-08-30 | Denyo Kk | Manufacture of series coupled engine-driven welding machine and assembled structure thereof |
| WO2007028684A1 (en) * | 2005-09-07 | 2007-03-15 | Siemens Aktiengesellschaft | Electric machine |
| US7629717B2 (en) * | 2004-06-21 | 2009-12-08 | Mitsubishi Denki Kabushiki Kaisha | Totally-enclosed fan-cooled motor |
| CN105024489A (en) * | 2015-08-11 | 2015-11-04 | 中达电机股份有限公司 | Cooling fan of explosion-proof variable frequency motor |
| EP3799264A1 (en) * | 2019-09-30 | 2021-03-31 | Siemens Aktiengesellschaft | Drive shaft of dynamo-electric machine and production method of same |
-
1992
- 1992-12-04 JP JP32451892A patent/JPH06178501A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08223884A (en) * | 1995-02-13 | 1996-08-30 | Denyo Kk | Manufacture of series coupled engine-driven welding machine and assembled structure thereof |
| US7629717B2 (en) * | 2004-06-21 | 2009-12-08 | Mitsubishi Denki Kabushiki Kaisha | Totally-enclosed fan-cooled motor |
| WO2007028684A1 (en) * | 2005-09-07 | 2007-03-15 | Siemens Aktiengesellschaft | Electric machine |
| CN105024489A (en) * | 2015-08-11 | 2015-11-04 | 中达电机股份有限公司 | Cooling fan of explosion-proof variable frequency motor |
| EP3799264A1 (en) * | 2019-09-30 | 2021-03-31 | Siemens Aktiengesellschaft | Drive shaft of dynamo-electric machine and production method of same |
| WO2021063745A1 (en) * | 2019-09-30 | 2021-04-08 | Siemens Aktiengesellschaft | Drive shaft of a dynamoelectrical machine and corresponding manufacturing method |
| EP3799264B1 (en) | 2019-09-30 | 2023-04-19 | Siemens Aktiengesellschaft | Drive shaft of dynamo-electric machine |
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