JP2002325394A - Armature - Google Patents
ArmatureInfo
- Publication number
- JP2002325394A JP2002325394A JP2001129215A JP2001129215A JP2002325394A JP 2002325394 A JP2002325394 A JP 2002325394A JP 2001129215 A JP2001129215 A JP 2001129215A JP 2001129215 A JP2001129215 A JP 2001129215A JP 2002325394 A JP2002325394 A JP 2002325394A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- rotor core
- rotor shaft
- cooling passage
- refrigerant
- 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
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電機子の冷却構造に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armature cooling structure.
【０００２】[0002]
【従来の技術】電動機の電機子、つまりロータを冷媒で
冷却する構造として、特開２０００−２９５８１８号公
報に示されるものがある。2. Description of the Related Art Japanese Patent Laid-Open No. 2000-295818 discloses a structure for cooling an armature of an electric motor, that is, a rotor with a refrigerant.
【０００３】これを図４によって説明すると、電磁鋼板
を積層してなるロータ鉄心１０１の中心にはパイプ１０
２が挿入され、このパイプ１０２とロータ軸１０３との
間に冷却通路１０４が形成される。冷却通路１０４には
ロータ軸１０３に形成した冷媒通路１０５ａと１０５ｂ
を介してオイルなどの冷媒が導かれ、これによってロー
タ鉄心１０１の冷却が行われるようになっている。[0003] Referring to Fig. 4, a rotor 10 made of laminated electromagnetic steel sheets has a pipe 10 at the center.
2 is inserted, and a cooling passage 104 is formed between the pipe 102 and the rotor shaft 103. In the cooling passage 104, refrigerant passages 105a and 105b formed in the rotor shaft 103 are provided.
The cooling medium such as oil is guided through the cooling medium, thereby cooling the rotor core 101.
【０００４】[0004]
【発明が解決しようとする課題】この冷却構造におい
て、ロータ鉄心１０１で発生する熱を効率よく冷媒に伝
達するためには、ロータ鉄心１０１とパイプ１０２との
接触熱抵抗をできるだけ小さくする必要がある。このた
め、ロータ鉄心１０１にパイプ１０２を固定するときに
焼ばめ等の手法により、ロータ鉄心１０１をパイプ１０
２に高い接触圧力で密着させるようにしている。In this cooling structure, in order to efficiently transfer the heat generated in the rotor core 101 to the refrigerant, it is necessary to minimize the contact thermal resistance between the rotor core 101 and the pipe 102. . Therefore, when the pipe 102 is fixed to the rotor core 101, the rotor core 101 is connected to the pipe 10 by a technique such as shrink fitting.
2 is brought into close contact with a high contact pressure.
【０００５】この場合、パイプ１０２の肉厚が薄いと焼
ばめを行うときにパイプ１０２が変形してしまうため、
変形を生じない程度にパイプ１０２の肉厚を確保する必
要があるが、これによりロータの外径がそれだけ大きく
なり、電動機が全体的に大型化してしまうという問題が
生じた。In this case, if the thickness of the pipe 102 is small, the pipe 102 is deformed when shrink fitting is performed.
Although it is necessary to ensure the thickness of the pipe 102 to such an extent that deformation does not occur, the outer diameter of the rotor is accordingly increased, and a problem arises in that the motor becomes larger as a whole.
【０００６】本発明はこのような問題を解決することを
目的とする。An object of the present invention is to solve such a problem.
【０００７】[0007]
【課題を解決するための手段】第１の発明は、ロータ軸
に同軸に配置され、積層された電磁鋼板で構成されるロ
ータ鉄心と、ロータ鉄心を軸方向両側から圧縮保持し、
かつロータ鉄心とロータ軸との間のトルク伝達を行うべ
く、ロータ軸に固着されたエンドプレートと、ロータ軸
外周とロータ鉄心内周との間に区画形成される冷却通路
と、この冷却通路にロータ軸内を経由して冷媒を導びく
通路と、を備える。According to a first aspect of the present invention, there is provided a rotor core which is arranged coaxially with a rotor shaft and is composed of laminated electromagnetic steel plates, and a rotor core which is compressed and held from both axial sides.
And, in order to transmit torque between the rotor core and the rotor shaft, an end plate fixed to the rotor shaft, a cooling passage defined between the outer periphery of the rotor shaft and the inner periphery of the rotor core, And a passage for guiding the refrigerant via the inside of the rotor shaft.
【０００８】第２の発明は、第１の発明において、前記
ロータ鉄心を構成する積層された電磁鋼板の各接触面並
びにロータ鉄心とエンドプレートとの各接触面には接着
剤が塗布されている。According to a second aspect, in the first aspect, an adhesive is applied to each contact surface of the laminated electromagnetic steel sheets constituting the rotor core and each contact surface between the rotor core and the end plate. .
【０００９】第３の発明は、第１または第２の発明にお
いて、前記冷却通路はロータ鉄心内周面もしくはロータ
軸外周面に形成した軸方向に延びる複数の溝、及び各溝
の間の突条部とにより区画形成される。In a third aspect based on the first or second aspect, the cooling passage is formed in a plurality of axially extending grooves formed in the inner peripheral surface of the rotor core or the outer peripheral surface of the rotor shaft, and a protrusion between the grooves. It is partitioned by the ridges.
【００１０】第４の発明は、第３の発明において、前記
突条部は周方向に少なくとも３カ所に設けられ、これら
突条部を介してロータ軸とロータ鉄心とが嵌まり合うよ
うになっている。[0010] In a fourth aspect based on the third aspect, the ridges are provided at at least three locations in the circumferential direction, and the rotor shaft and the rotor core are fitted through the ridges. ing.
【００１１】第５の発明は、第２から第４の発明におい
て、前記冷却通路を形成する溝の内部には放熱用の襞溝
が形成されている。In a fifth aspect based on the second to fourth aspects, a fold groove for heat radiation is formed inside the groove forming the cooling passage.
【００１２】第６の発明は、第１または第２の発明にお
いて、前記冷却通路の断面積は、この冷却通路に冷媒を
導く上流側または下流側の冷媒通路の断面積よりも小さ
く設定されている。In a sixth aspect based on the first or second aspect, a cross-sectional area of the cooling passage is set smaller than a cross-sectional area of an upstream or downstream refrigerant passage for guiding the refrigerant to the cooling passage. I have.
【００１３】[0013]
【発明の作用および効果】第１〜第３の発明にあって
は、冷却通路がロータ軸とロータ鉄心との間に直接的に
形成されているので、ロータ鉄心の冷却効率が良く、し
かもロータ鉄心の外径が大きくなることもない。また、
ロータ軸とロータ鉄心との嵌合面に冷却通路が形成され
ていても、ロータ鉄心はエンドプレートにより圧縮保持
されているので、積層された電磁鋼板の隙間から冷媒が
漏れることもなく、また、ロータ鉄心からロータ軸への
トルク伝達は、ロータ鉄心を狭持するエンドプレートを
介して行われるので、ロータ軸に伝達されるトルクが低
下することもない。According to the first to third aspects of the present invention, the cooling passage is formed directly between the rotor shaft and the rotor core, so that the cooling efficiency of the rotor core is good and the rotor is more efficient. The outer diameter of the iron core does not increase. Also,
Even if a cooling passage is formed in the fitting surface between the rotor shaft and the rotor core, the rotor core is compressed and held by the end plate, so that the refrigerant does not leak from the gap between the laminated electromagnetic steel sheets, Since the torque transmission from the rotor core to the rotor shaft is performed through the end plate that holds the rotor core, the torque transmitted to the rotor shaft does not decrease.
【００１４】第２の発明では、ロータ鉄心を構成する積
層した電磁鋼板、及びエンドプレートとの各接触面に接
着剤を塗布したので、各接触面からの冷媒の漏出を確実
に防ぐことができる。According to the second aspect of the present invention, since the adhesive is applied to each of the contact surfaces with the laminated electromagnetic steel sheets and the end plate constituting the rotor core, leakage of the refrigerant from each of the contact surfaces can be reliably prevented. .
【００１５】第４の発明では、ロータ軸とロータ鉄心の
嵌合部となる突条部を周方向の３箇所としたので、ロー
タ鉄心のセンタリングを精度よく行うことができる。According to the fourth aspect of the present invention, since the protrusions serving as fitting portions between the rotor shaft and the rotor core are provided at three places in the circumferential direction, the centering of the rotor core can be performed with high accuracy.
【００１６】第５の発明では、冷却通路の内部に襞壁を
設けることで、ロータ鉄心の放熱性がさらに高められ
る。According to the fifth aspect, the heat radiation of the rotor core is further enhanced by providing the fold wall inside the cooling passage.
【００１７】第６の発明では、冷却通路の部分での冷媒
の流速を高めることができ、さらに冷却性能を向上させ
られる。In the sixth aspect, the flow rate of the refrigerant in the cooling passage can be increased, and the cooling performance can be further improved.
【００１８】[0018]
【発明の実施の形態】以下、添付図面にしたがって本発
明の実施の形態を説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１９】図１、図２に示すように、ケース１０の内
部には軸受１１を介してロータ１が回転自在に支持され
る。ロータ１はロータ軸４に嵌めたロータ鉄心２の両側
にエンドプレート３を配置して構成される。As shown in FIGS. 1 and 2, the rotor 1 is rotatably supported inside a case 10 via a bearing 11. The rotor 1 is configured by arranging end plates 3 on both sides of a rotor core 2 fitted on a rotor shaft 4.
【００２０】ロータ鉄心２は電磁鋼板を軸方向に積層し
た構造で、ロータ軸４に溶接などにより固定したエンド
プレート３の間に挟み込まれる。この組み付けは、例え
ば次のようにして行う。まず一方のエンドプレート３の
内周をロータ軸４に全周溶接で固定しておき、積層した
電磁鋼板をロータ軸４に挿入し、さらに他方のエンドプ
レート３を挿入して軸方向の外側から加圧した状態で、
全周溶接によりロータ軸４に固定し、これら一対のエン
ドプレート３の間にロータ鉄心２を構成する積層した電
磁鋼板を圧縮状態で保持する。なおこのときロータ軸４
はロータ鉄心２にかかる圧縮力と同じ大きさの引っ張り
力を受ける。The rotor core 2 has a structure in which electromagnetic steel sheets are laminated in the axial direction, and is sandwiched between end plates 3 fixed to the rotor shaft 4 by welding or the like. This assembling is performed, for example, as follows. First, the inner circumference of one end plate 3 is fixed to the rotor shaft 4 by full circumference welding, the laminated electromagnetic steel sheet is inserted into the rotor shaft 4, and the other end plate 3 is inserted into the rotor shaft 4 from outside in the axial direction. In a pressurized state,
It is fixed to the rotor shaft 4 by full circumference welding, and the laminated electromagnetic steel sheets constituting the rotor core 2 are held in a compressed state between the pair of end plates 3. At this time, the rotor shaft 4
Receives a tensile force of the same magnitude as the compressive force applied to the rotor core 2.
【００２１】ロータ鉄心２の内部には複数の永久磁石７
が、ロータ軸４を中心とする同一円周上に等間隔でかつ
ロータ軸４と平行に配置される。永久磁石７はロータ鉄
心２の軸方向長と略同一に形成され、ロータ鉄心２に設
けた磁石挿入孔７ａに挿入、固定される。A plurality of permanent magnets 7 are provided inside the rotor core 2.
Are arranged at equal intervals on the same circumference around the rotor shaft 4 and in parallel with the rotor shaft 4. The permanent magnet 7 is formed to have substantially the same axial length as the rotor core 2 and is inserted and fixed in a magnet insertion hole 7 a provided in the rotor core 2.
【００２２】図２から明らかなように、ロータ鉄心２の
ロータ軸４との間には、軸方向に延びる複数の冷却通路
５が形成され、これら冷却通路５は、その両端付近にお
いてロータ軸４に形成した上流側冷媒通路６ａと下流側
冷媒通路６ｂにそれぞれ接続し、これによりオイルなど
の冷媒が冷却通路５に導入され、ロータ鉄心２の冷却を
行うようになっている。As is apparent from FIG. 2, a plurality of cooling passages 5 extending in the axial direction are formed between the rotor core 2 and the rotor shaft 4, and these cooling passages 5 are provided near the rotor shaft 4 near both ends thereof. Are connected to the upstream-side refrigerant passage 6a and the downstream-side refrigerant passage 6b, respectively, whereby refrigerant such as oil is introduced into the cooling passage 5 to cool the rotor core 2.
【００２３】冷却通路５は、ロータ鉄心２の内孔２ａに
沿って軸方向に延びる複数の溝５ａを円周方向に等間隔
に形成し、隣り合う各溝５ａの間の突条部５ｂがロータ
軸４の外周に密着することにより、ロータ鉄心２の内周
面とロータ軸４の外周面との間に区画形成される。In the cooling passage 5, a plurality of grooves 5a extending in the axial direction along the inner hole 2a of the rotor core 2 are formed at equal intervals in the circumferential direction, and the projections 5b between the adjacent grooves 5a are formed. By being in close contact with the outer periphery of the rotor shaft 4, a partition is formed between the inner peripheral surface of the rotor core 2 and the outer peripheral surface of the rotor shaft 4.
【００２４】なお、各冷却通路５には、ロータ軸４の軸
心に設けた上流側、下流側冷媒通路６ａ、６ｂからそれ
ぞれ半径方向に分岐する分岐通路６ｃが接続し、これに
よりロータ鉄心２の内周域に冷媒が導かれる。Each cooling passage 5 is connected to a branch passage 6c radially branching from the upstream and downstream refrigerant passages 6a and 6b provided at the axis of the rotor shaft 4, whereby the rotor core 2 is connected. Is guided to the inner peripheral area of the refrigerant.
【００２５】図１に戻って、ケース１０の内周には、ロ
ータ１の外周面と所定の間隙をもって、電磁鋼板を軸方
向に積層したステータ鉄心８が配置固定され、ステータ
鉄心８にはコイル９が巻装されていて、図示しないイン
バータ装置からの励磁電流を供給してコイル９による磁
界の発生を制御する。Returning to FIG. 1, a stator core 8 in which electromagnetic steel sheets are laminated in the axial direction is fixed to the inner periphery of the case 10 with a predetermined gap from the outer peripheral surface of the rotor 1. 9 is wound, and supplies an exciting current from an inverter device (not shown) to control the generation of a magnetic field by the coil 9.
【００２６】ステータ鉄心８のコイル９の励磁電流に応
じて磁界が発生し、ロータ１が回転するが、ロータ１は
永久磁石７による渦電流とコイル９の発熱の影響で温度
が上昇する。A magnetic field is generated according to the exciting current of the coil 9 of the stator core 8, and the rotor 1 rotates. The temperature of the rotor 1 rises due to the eddy current generated by the permanent magnet 7 and the heat generated by the coil 9.
【００２７】しかし、ロータ１には図示しないポンプに
よりオイルなどの液冷媒がロータ軸４の上流側冷媒通路
６ａから分岐通路６ｃ経て冷却通路５に導かれ、ロータ
鉄心２の内周域を冷却し、分岐通路６ｃ、下流側冷媒通
路６ｂへと流れる。このようにしてロータ鉄心２を内周
側から液冷媒により冷却し、ロータ１の温度上昇を抑制
する。However, a liquid refrigerant such as oil is guided from the upstream side refrigerant passage 6a of the rotor shaft 4 to the cooling passage 5 through the branch passage 6c by the pump (not shown) to the rotor 1 to cool the inner peripheral area of the rotor core 2. Flows into the branch passage 6c and the downstream refrigerant passage 6b. In this way, the rotor core 2 is cooled by the liquid refrigerant from the inner peripheral side, and the temperature rise of the rotor 1 is suppressed.
【００２８】この場合、冷却通路５の断面積は通過冷媒
の流速を高めるほど熱交換率が高まるので、他の通路部
分（上流側、下流側冷媒通路６ａ、６ｂなど）よりも小
さくすることが望ましく、またロータ鉄心２からの抜熱
性を向上させるには、液冷媒がロータ鉄心２と触れ合う
面積を大きくすることが好ましい。In this case, the cross-sectional area of the cooling passage 5 becomes smaller as the flow rate of the passing refrigerant increases, so that the heat exchange rate increases. Desirably, in order to improve the heat removal from the rotor core 2, it is preferable to increase the area where the liquid refrigerant contacts the rotor core 2.
【００２９】冷却通路５はロータ鉄心２の内周面の溝５
ａとロータ軸４の外周との間に区画形成され、ロータ鉄
心２との触れ合い面積を大きくすると、突条部５ｂがロ
ータ軸４と接触する嵌合面積がそれだけ小さくなり、ロ
ータ１に発生した回転トルクのロータ軸４への伝達力が
弱くなる。The cooling passage 5 is provided with a groove 5 on the inner peripheral surface of the rotor core 2.
When the contact area with the rotor core 2 is increased, the fitting area where the ridge 5b is in contact with the rotor shaft 4 is reduced accordingly, and the rotor 1 is formed. The transmission force of the rotation torque to the rotor shaft 4 becomes weak.
【００３０】また、冷却通路５を流れる液冷媒はポンプ
により加圧され、かつロータ１の回転に伴って発生する
遠心力により、ロータ鉄心２の積層した電磁鋼板の各接
触面、あるいはエンドプレートとの間から、冷却通路５
を流れる液冷媒が漏れ出る可能性もある。Further, the liquid refrigerant flowing through the cooling passage 5 is pressurized by a pump, and centrifugal force generated by the rotation of the rotor 1 causes the contact between the contact surfaces of the laminated electromagnetic steel plates of the rotor core 2 or the end plates. Between the cooling passages 5
There is a possibility that the liquid refrigerant flowing through the air leaks.
【００３１】しかし、本発明では電磁鋼板を積層したロ
ータ鉄心２は左右のエンドプレート３により軸方向に大
きな圧縮力を受けている。このため、ロータ鉄心２に発
生した回転トルクは圧縮による摩擦力で積層電磁鋼板か
らエンドプレート３へと滑りを生じることなく伝達さ
れ、さらに溶接により固定されたロータ軸４へと伝達さ
れ、したがって冷却通路５がロータ鉄心２の内周面の一
部を利用して形成されていて、その分だけロータ軸４と
の接触面積が小さくなっても、発生する回転トルクを確
実に伝達することができる。However, in the present invention, the rotor core 2 on which the electromagnetic steel sheets are laminated receives a large compressive force in the axial direction by the left and right end plates 3. For this reason, the rotational torque generated in the rotor core 2 is transmitted from the laminated electromagnetic steel sheet to the end plate 3 without friction due to the frictional force due to the compression, and further transmitted to the rotor shaft 4 fixed by welding, thus cooling. The passage 5 is formed using a part of the inner peripheral surface of the rotor core 2, and even if the contact area with the rotor shaft 4 is reduced by that amount, the generated rotational torque can be transmitted reliably. .
【００３２】また、同時に冷却通路５を流れる液冷媒に
圧力がかかっても、ロータ鉄心２の積層された電磁鋼板
が大きな圧縮力で相互に密着しているため、互いの接触
面が完全平面でなくある程度の表面粗さがあっても液冷
媒の漏洩を阻止できる。Further, even if pressure is applied to the liquid refrigerant flowing through the cooling passage 5 at the same time, the electromagnetic steel sheets on which the rotor cores 2 are laminated are in close contact with each other with a large compressive force. Even if there is some surface roughness, leakage of the liquid refrigerant can be prevented.
【００３３】なお、液冷媒の電磁鋼板の互いの接触面、
あるいはエンドプレート３との接触面での封密性をさら
に高めるために、各接触面に接着剤を塗布してからロー
タ１を組み立てるようにしてもよい。Incidentally, the contact surfaces of the liquid refrigerant with the electromagnetic steel plates,
Alternatively, in order to further increase the sealing at the contact surface with the end plate 3, the rotor 1 may be assembled after applying an adhesive to each contact surface.
【００３４】他の実施の形態を図３により説明する。Another embodiment will be described with reference to FIG.
【００３５】この実施の形態では、各冷却通路５を区画
する突条部５ｂの数を減らし、ただし最小でも３点によ
り支持できるように形成し、ロータ鉄心２の内周面に形
成した溝５ａ内には軸方向に延びる複数の平行な抜熱用
の襞壁５ｃを設け、これらにより冷却通路５を流れる液
冷媒のロータ鉄心２との触れ合い面積を大きくし、ロー
タ１の抜熱性能を高めるようにした。In this embodiment, the number of the protruding portions 5b for partitioning each cooling passage 5 is reduced, but is formed so as to be supported by at least three points, and the grooves 5a formed on the inner peripheral surface of the rotor core 2 are formed. A plurality of parallel heat-releasing fold walls 5c extending in the axial direction are provided in the inside, thereby increasing the contact area of the liquid refrigerant flowing through the cooling passage 5 with the rotor core 2 and improving the heat-removing performance of the rotor 1. I did it.
【００３６】なお、ロータ鉄心２のロータ軸４への支持
点を３点とすることで、ロータ鉄心２のセンタリング機
能は維持され、また、このようにロータ軸４との嵌合接
触面積を減らしても、ロータ軸４へのトルク伝達は上記
のように圧縮状態で保持されるロータ鉄心２とエンドプ
レート３との間で行われるため、伝達トルクが低下する
ことは無い。It should be noted that the centering function of the rotor core 2 is maintained by setting the support points of the rotor core 2 to the rotor shaft 4 at three points, and the fitting contact area with the rotor shaft 4 is thus reduced. However, since the torque transmission to the rotor shaft 4 is performed between the rotor core 2 and the end plate 3 held in a compressed state as described above, the transmission torque does not decrease.
【００３７】なお、上記実施の形態において、冷却通路
５を区画形成するためにロータ鉄心２の内周面に軸方向
に延びる溝５ａと、各溝５ａを仕切る突条部５ｂとを形
成したが、これらの代わりにロータ軸４の外周面に同じ
ような溝と突条部を設け、ロータ鉄心２の内周面との間
で冷却通路を形成するようにしてもよい。In the above embodiment, the grooves 5a extending in the axial direction are formed on the inner peripheral surface of the rotor core 2 to form the cooling passages 5, and the ridges 5b partitioning the grooves 5a. Alternatively, similar grooves and ridges may be provided on the outer peripheral surface of the rotor shaft 4 to form a cooling passage between the inner peripheral surface of the rotor core 2.
【００３８】本発明は上記した実施の形態に限定される
ものではなく、特許請求の範囲に記載された発明の技術
的思想の範囲内において、さまざまな変更が可能である
ことは明白である。The present invention is not limited to the above-described embodiments, but it is apparent that various modifications can be made within the scope of the technical idea of the present invention described in the appended claims.
【図１】本発明の実施の形態を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】同じく図１の横断面図である。FIG. 2 is a cross-sectional view of FIG.
【図３】他の実施の形態を示す図２と同じ横断面図であ
る。FIG. 3 is the same cross-sectional view as FIG. 2 showing another embodiment.
【図４】従来例の断面図である。FIG. 4 is a sectional view of a conventional example.
１ ロータ ２ ロータ鉄心 ３ エンドプレート ４ ロータ軸 ５ 冷却通路 ５ａ 溝 ５ｂ 突条部 ５ｃ 放熱壁 ６ａ 上流側冷媒通路 ６ｂ 下流側冷媒通路 ６ｃ 分岐通路 ７ 永久磁石 ８ ステータ鉄心 １０ ケース １１ 軸受 DESCRIPTION OF SYMBOLS 1 Rotor 2 Rotor core 3 End plate 4 Rotor shaft 5 Cooling passage 5a Groove 5b Ridge 5c Radiation wall 6a Upstream refrigerant passage 6b Downstream refrigerant passage 6c Branch passage 7 Permanent magnet 8 Stator core 10 Case 11 Bearing
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H002 AA10 AB05 AB07 AB08 AC04 AD02 AE08 5H609 BB03 BB19 PP02 PP07 PP08 QQ08 QQ12 QQ14 QQ16 RR55 RR60 RR67 5H621 GA01 HH01 JK05 JK11 JK17 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H002 AA10 AB05 AB07 AB08 AC04 AD02 AE08 5H609 BB03 BB19 PP02 PP07 PP08 QQ08 QQ12 QQ14 QQ16 RR55 RR60 RR67 5H621 GA01 HH01 JK05 JK11 JK17
Claims (6)
磁鋼板で構成されるロータ鉄心と、 ロータ鉄心を軸方向両側から圧縮保持し、かつロータ鉄
心とロータ軸との間のトルク伝達を行うべく、ロータ軸
に固着されたエンドプレートと、 ロータ軸外周とロータ鉄心内周との間に区画形成される
冷却通路と、 この冷却通路にロータ軸内を経由して冷媒を導びく通路
と、を備えたことを特徴とする電機子。1. A rotor core coaxially arranged on a rotor shaft and composed of laminated electromagnetic steel plates, a rotor core compressed and held from both sides in the axial direction, and torque transmission between the rotor core and the rotor shaft. An end plate fixed to the rotor shaft, a cooling passage defined between the outer periphery of the rotor shaft and the inner periphery of the rotor core, and a passage for guiding the refrigerant to the cooling passage via the inside of the rotor shaft. An armature comprising:
鋼板の各接触面並びにロータ鉄心とエンドプレートとの
各接触面には接着剤が塗布されている請求項１に記載の
電機子。2. The armature according to claim 1, wherein an adhesive is applied to each contact surface of the laminated electromagnetic steel sheets constituting the rotor core and each contact surface between the rotor core and the end plate.
ロータ軸外周面に形成した軸方向に延びる複数の溝、及
び各溝の間の突条部とにより区画形成される請求項１ま
たは２に記載の電機子。3. The cooling passage is defined by a plurality of axially extending grooves formed in the inner peripheral surface of the rotor core or the outer peripheral surface of the rotor shaft, and ridges between the grooves. The armature described in the above.
設けられ、これら突条部を介してロータ軸とロータ鉄心
とが嵌まり合うようになっている請求項３に記載の電機
子。4. The armature according to claim 3, wherein said ridges are provided in at least three places in the circumferential direction, and the rotor shaft and the rotor core are fitted through these ridges. .
用の襞溝が形成されている請求項２〜４のいずれか一つ
に記載の電機子。5. The armature according to claim 2, wherein a fold groove for heat radiation is formed inside the groove forming the cooling passage.
冷媒を導く上流側または下流側の冷媒通路の断面積より
も小さく設定されている請求項１または２に記載の電機
子。6. The armature according to claim 1, wherein a cross-sectional area of the cooling passage is set smaller than a cross-sectional area of an upstream or downstream refrigerant passage for guiding the refrigerant to the cooling passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001129215A JP2002325394A (en) | 2001-04-26 | 2001-04-26 | Armature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001129215A JP2002325394A (en) | 2001-04-26 | 2001-04-26 | Armature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002325394A true JP2002325394A (en) | 2002-11-08 |
Family
ID=18977773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001129215A Pending JP2002325394A (en) | 2001-04-26 | 2001-04-26 | Armature |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002325394A (en) |
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