JP3417726B2 - Bearing device for wheel-integrated rotating electrical machine - Google Patents
Bearing device for wheel-integrated rotating electrical machineInfo
- Publication number
- JP3417726B2 JP3417726B2 JP14878195A JP14878195A JP3417726B2 JP 3417726 B2 JP3417726 B2 JP 3417726B2 JP 14878195 A JP14878195 A JP 14878195A JP 14878195 A JP14878195 A JP 14878195A JP 3417726 B2 JP3417726 B2 JP 3417726B2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- wheel
- grease
- filling chamber
- axle
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6607—Retaining the grease in or near the bearing
- F16C33/6618—Retaining the grease in or near the bearing in a reservoir in the sealing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
- F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/10—Railway vehicles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は鉄道車両等に使用される
アウタロータタイプの車輪一体形回転電機の軸受装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device for an outer rotor type wheel-integrated rotary electric machine used in railway vehicles and the like.
【０００２】[0002]
【従来の技術】鉄道車両の駆動構造は、従来より車輪と
一体化された車軸と同軸上に取付けられた歯車に、主電
動機（以下モータと呼ぶ）の回転軸に固定された歯車を
噛合せ、モータの回転力を歯車装置を介して車輪を回転
させる方式が採用されている。2. Description of the Related Art Conventionally, a drive structure of a railroad vehicle is configured such that a gear fixed to a rotary shaft of a main electric motor (hereinafter referred to as a motor) is meshed with a gear mounted coaxially with an axle which has been conventionally integrated with a wheel. , A method of rotating the wheels by the rotational force of a motor via a gear device is adopted.
【０００３】近年では車両の低騒音化、保守の省力化等
の目的より、図５に示すような車輪、モータ一体形の駆
動方式の開発が進められている。図５は台車中心より片
側の車輪一体形モータを示している。図５において、３
は回転しない車軸で、この車軸３の両端部は軸支持箱２
を介して台車枠１に固定支持されている。この車軸３の
片側位置には軸受９を介してレール上を走行する車輪１
０が回転自在に支持されている。また、車軸３の中央部
寄りにはコイル４を備えた固定子鉄心５が取付けられて
いる。In recent years, for the purpose of reducing noise of a vehicle, labor saving of maintenance, and the like, development of a drive system of a wheel and motor type as shown in FIG. 5 has been advanced. FIG. 5 shows a wheel-integrated motor on one side of the center of the carriage. In FIG. 5, 3
Is a non-rotating axle, and both ends of this axle 3 are axle support boxes 2
It is fixedly supported by the bogie frame 1 via. A wheel 1 traveling on a rail via a bearing 9 is provided on one side of the axle 3.
0 is rotatably supported. A stator core 5 having a coil 4 is attached near the center of the axle 3.
【０００４】一方、車輪１０の内側にはブラケット１１
の一端が取付けられ、その他端には内周側に永久磁石６
を有する円筒状の回転子フレーム７の一端部が固定さ
れ、この回転子フレーム７の台車中心側端部は軸受８に
より固定子部材に対して回転自在に支持されている。On the other hand, a bracket 11 is provided inside the wheel 10.
Of the permanent magnet 6 is attached to one end of the
One end of a cylindrical rotor frame 7 having is fixed, and an end of the rotor frame 7 on the center side of the carriage is rotatably supported by a bearing 8 with respect to a stator member.
【０００５】このようにアウタロータタイプの永久磁石
使用の同期電動機は、回転子フレーム７をブラケット１
１により車輪１０に接続し，この車輪１０と一体に回転
部分を形成して車両を駆動する構造となっている。As described above, in the synchronous motor using the outer rotor type permanent magnet, the rotor frame 7 is attached to the bracket 1
1 is connected to the wheel 10 and a rotating portion is formed integrally with the wheel 10 to drive the vehicle.
【０００６】従来、かかる車輪一体形モータにおいて、
回転子フレーム７を回転自在に支持する軸受８として
は、図６に示すような構造となっている。即ち、図６に
示すように回転子フレーム７に軸受外輪８ａが支持さ
れ、また回転子フレーム７の軸受８の一方の側面に対応
する部分に軸受内に開口した環状のグリース充填室１２
が設けられている。また、回転子フレーム７の軸受８の
他方の側面に対応する部分には端蓋１３が取付けられ、
この端蓋１３に軸受側に開口した環状のグリース充填室
１４が設けられている。Conventionally, in such a wheel-integrated motor,
A bearing 8 for rotatably supporting the rotor frame 7 has a structure as shown in FIG. That is, as shown in FIG. 6, a bearing outer ring 8a is supported by the rotor frame 7, and an annular grease filling chamber 12 opened in the bearing at a portion of the rotor frame 7 corresponding to one side surface of the bearing 8.
Is provided. An end cover 13 is attached to a portion of the rotor frame 7 corresponding to the other side surface of the bearing 8.
The end cover 13 is provided with an annular grease filling chamber 14 that is open to the bearing side.
【０００７】一方、固定子鉄心を車軸に固定するための
固定子部材１５に外輪８ａに対応させて設けられる内輪
８ｂが支持され、軸受押え具１６により固定されてい
る。また、軸受外輪８ａと内輪８ｂの間には複数個のコ
ロ８ｃが保持器８ｄに保持させて円周上に等間隔に配置
されている。On the other hand, an inner ring 8b provided so as to correspond to the outer ring 8a is supported by a stator member 15 for fixing the stator core to the axle, and is fixed by a bearing retainer 16. A plurality of rollers 8c are held by a cage 8d between the outer ring 8a and the inner ring 8b of the bearing and are arranged at equal intervals on the circumference.
【０００８】ここで、上記グリース充填室１２，１４に
はグリースが充填され、このグリースとは分離して軸受
内へ供給される基油により、軸受転動体部分の潤滑を行
っている。Here, the grease filling chambers 12 and 14 are filled with grease, and the bearing rolling element is lubricated by the base oil which is separated from the grease and supplied into the bearing.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、このよ
うなアウタロータタイプの車輪一体形モータの軸受構造
では、軸受外輪８ａと共に回転子フレーム７及び端蓋１
３が回転するため、図７に示す如くグリース充填室１
２，１４に充填されたグリース１７は遠心力の作用によ
り外周側に押付けられてそれぞれの開口側より軸受８内
に移動する。However, in such a bearing structure for an outer rotor type wheel-integrated motor, the rotor frame 7 and the end cover 1 together with the bearing outer ring 8a.
Since the 3 rotates, the grease filling chamber 1 as shown in FIG.
The grease 17 filled in 2, 14 is pressed to the outer peripheral side by the action of centrifugal force and moves into the bearing 8 from the respective opening sides.
【００１０】その結果、軸受８のコロ８ｃにより急激な
グリースの撹拌が行われ、軸受８の温度が上昇すると共
に、グリースの軟化による潤滑機能が低下してしまうと
いう不具合があった。As a result, the roller 8c of the bearing 8 rapidly agitates the grease, the temperature of the bearing 8 rises, and the lubricating function deteriorates due to the softening of the grease.
【００１１】特に車両の高速化に伴ってモータの回転数
が増大すると、その影響が益々大きくなると同時に回転
数の増大により潤滑条件が厳しくなるため、この問題は
益々重要であり、安定した軸受のグリース潤滑を維持で
きる軸受構造の開発が望まれていた。Particularly, when the rotation speed of the motor increases with the speeding up of the vehicle, its influence becomes more and more serious, and at the same time, the lubrication condition becomes severe due to the increase in the rotation speed. It has been desired to develop a bearing structure that can maintain grease lubrication.
【００１２】本発明は上記のような事情に鑑みてなされ
たもので、遠心力による作用により軸受内部でのグリー
スの撹拌をなくして長期間安定した潤滑を維持すると共
に、遠心力を受けても充填グリースが軸受内での移動を
防止し、もって安定した潤滑を維持することができる車
輪一体形回転電機の軸受装置を提供することを目的とす
る。The present invention has been made in view of the above circumstances, and it is possible to maintain stable lubrication for a long period of time by eliminating the agitation of grease inside the bearing by the action of the centrifugal force and to receive the centrifugal force. An object of the present invention is to provide a bearing device for a wheel-integrated rotary electric machine, which can prevent the filled grease from moving within the bearing and thus maintain stable lubrication.
【００１３】[0013]
【課題を解決するための手段】本発明は上記の目的を達
成するため、次のような手段により車輪一体形回転電機
の軸受装置を構成する。請求項１に対応する発明は、台
車に固定支持された車軸の一端部に車輪側軸受を介して
車輪を回転自在に支持すると共に、前記車軸の中央部付
近に固定された固定子部材に回転子フレームの一端側を
回転機側軸受を介して回転自在に支持すると共に、この
回転子フレームの他端側を前記車輪に結合して回転体を
構成し、且つ前記両軸受間の車軸上にコイルを有する固
定子が固定支持された構造のアウタロータタイプの車輪
一体形回転電機の軸受装置において、前記固定子部材に
支持させて前記回転機側軸受の側面に端蓋を取付け、こ
の端蓋に軸受側面に開口した環状のグリース充填室を設
けると共に、このグリース充填室に潤滑グリースを充填
し、且つ前記グリース充填室の外周壁の外径が前記回転
機側軸受の外輪の内径よりも小さくする。In order to achieve the above object, the present invention comprises a bearing device for a wheel-integrated rotary electric machine by the following means. The invention corresponding to claim 1 rotatably supports a wheel at one end of an axle fixedly supported by a bogie via a wheel-side bearing, and is rotated by a stator member fixed near the center of the axle. One end side of the child frame is rotatably supported through a bearing on the rotating machine side, and the other end side of the rotor frame is connected to the wheel to form a rotating body, and on the axle between the both bearings. In a bearing device of an outer rotor type wheel-integrated electric rotating machine having a structure in which a stator having a coil is fixedly supported, an end cover is attached to a side surface of the rotary machine side bearing by being supported by the stator member, and the end cover is attached to the end cover. An annular grease filling chamber opened on the side surface of the bearing is provided, and the grease filling chamber is filled with lubricating grease, and the outer diameter of the outer peripheral wall of the grease filling chamber is smaller than the inner diameter of the outer ring of the rotating machine side bearing. .
【００１４】[0014]
【００１５】請求項２に対応する発明は、前記回転子フ
レームに支持させて前記回転電機側軸受の側面に端蓋を
取付け、この端蓋の内部に環状空間にしたグリース充填
室を設け、このグリース充填室内を円周方向に複数に区
分する仕切板を設けて潤滑グリースを充填し、且つ前記
グリース充填室の軸受側の側壁の内径側に開口部を設け
てグリース充填室内と軸受内部とを連通させる。According to a second aspect of the present invention, an end cover is attached to the side surface of the rotary electric machine side bearing supported by the rotor frame, and a grease filling chamber in an annular space is provided inside the end cover. A partition plate that divides the grease filling chamber into a plurality of sections in the circumferential direction is provided to fill the lubricating grease, and an opening is provided on the inner diameter side of the bearing side wall of the grease filling chamber to separate the grease filling chamber and the bearing interior. Communicate.
【００１６】[0016]
【作用】請求項１に対応する発明の車輪一体形回転電機
の軸受装置にあっては、固定子部材に支持されて回転機
側軸受の側面に取付けられた端蓋に軸受側面に開口した
環状のグリース充填室を設け、その外周壁の外径が回転
機側軸受の外輪の内径よりも小さくしてあるので、グリ
ース充填室に充填された潤滑グリースは運転中回転する
ことがないので、遠心力の作用により潤滑グリースが軸
受内に移動することなく、安定した状態で保持される。According to the bearing device for a wheel-integrated electric rotating machine of the invention according to claim 1, an annular ring, which is supported by the stator member and is attached to the side surface of the rotary machine side bearing, has an opening on the side surface of the bearing. Since the outer diameter of the outer peripheral wall of the grease filling chamber is smaller than the inner diameter of the outer ring of the rotating machine side bearing, the lubricating grease filled in the grease filling chamber does not rotate during operation. Lubricating grease does not move into the bearing due to the action of force and is held in a stable state.
【００１７】[0017]
【００１８】請求項２に対応する発明の車輪一体形回転
電機の軸受装置にあっては、運転時にはグリース充填室
に充填されたグリースに対して遠心力が作用するが、円
周方向に複数に区分されたグリース充填室の軸受側の側
壁の内径側に開口部を設けてあるので、グリースは軸受
側側面を覆う隔壁により保持され、軸受内に移動するこ
とはない。In the bearing device for a wheel-integrated rotary electric machine according to the second aspect of the invention, centrifugal force acts on the grease filled in the grease filling chamber during operation, but there are a plurality of circumferentially oriented grease. Since the opening is provided on the inner diameter side of the side wall on the bearing side of the divided grease filling chamber, the grease is held by the partition wall covering the side surface on the bearing side and does not move into the bearing.
【００１９】[0019]
【実施例】以下本発明の実施例を図面を参照して説明す
る。図１は本発明による車輪一体形回転電機の軸受装置
の第１の実施例を示すモータ側軸受部の断面図で、図６
と同一部分には同一符号を付して説明する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a motor side bearing portion showing a first embodiment of a bearing device for a wheel-integrated rotary electric machine according to the present invention.
The same parts as those in FIG.
【００２０】図１に示すように回転子フレーム７の軸受
側端部に形成された環状段差形状の軸受保持面に軸受外
輪８ａが支持され、この軸受外輪８ａの一側面に端蓋１
８が設けられると共に、この端蓋１８は回転子フレーム
７の外側端面にボルトにて固定される。As shown in FIG. 1, the bearing outer ring 8a is supported by a bearing holding surface of an annular step shape formed at the bearing side end of the rotor frame 7, and the end cover 1 is attached to one side surface of the bearing outer ring 8a.
8 is provided, and the end cover 18 is fixed to the outer end surface of the rotor frame 7 with bolts.
【００２１】また、軸受外輪８ａに対応させて軸受内輪
８ｂが固定子部材１５に支持されると共に、これら軸受
外輪８ａと内輪８ｂの間に複数個のコロ８ｃが保持器８
ｄに保持させて円周上に等間隔に配置される。The bearing inner ring 8b is supported by the stator member 15 so as to correspond to the bearing outer ring 8a, and a plurality of rollers 8c are provided between the bearing outer ring 8a and the inner ring 8b.
They are held at d and arranged at equal intervals on the circumference.
【００２２】さらに、軸受内輪８ｂの両側面には環状の
端蓋１９，２０が設けられ、これら端蓋１９，２０は固
定子部材１５の外側面と内側面にボルトにてそれぞれ固
定される。Further, annular end covers 19 and 20 are provided on both side surfaces of the bearing inner ring 8b, and these end covers 19 and 20 are fixed to the outer surface and the inner surface of the stator member 15 with bolts, respectively.
【００２３】上記端蓋１９，２０は、端蓋１８と回転子
フレーム７にそれぞれ形成された環状段差部の凹部内に
組込まれる凸部を有し、この凸部には軸受内に開口した
グリース充填室２１，２２がそれぞれ形成され、これら
グリース充填室２１，２２に潤滑グリースが充填され
る。The end lids 19 and 20 have a convex portion to be incorporated into a concave portion of an annular step portion formed on the end lid 18 and the rotor frame 7, respectively, and the convex portion has a grease opening in the bearing. Filling chambers 21 and 22 are formed, and the grease filling chambers 21 and 22 are filled with lubricating grease.
【００２４】この場合、端蓋１９，２０のグリース充填
室２１，２２の外周壁の外径ｄ2 は軸受外輪８ａの内径
ｄ1 より小さく構成されている。上記第１の実施例によ
る構成の車輪一体形モータの軸受装置にあっては、グリ
ース充填室２１，２２を固定子部材１５に取付けられる
端蓋１９，２０の凸部に形成し、且つその外周壁の外形
ｄ2 を軸受外輪８ａの内径ｄ1 よりも小さくしてあるの
で、グリース充填室２１，２２に充填された潤滑グリー
スは運転中回転することがないため、遠心力が作用せ
ず、軸受内に移動することなく安定した状態で保持され
る。In this case, the outer diameters d 2 of the outer peripheral walls of the grease filling chambers 21 and 22 of the end covers 19 and 20 are smaller than the inner diameter d 1 of the bearing outer ring 8a. In the bearing device for a wheel-integrated motor having the structure according to the first embodiment, the grease-filled chambers 21 and 22 are formed on the convex portions of the end covers 19 and 20 attached to the stator member 15, and the outer circumference thereof is formed. Since the outer diameter d 2 of the wall is made smaller than the inner diameter d 1 of the bearing outer ring 8a, the lubricating grease filled in the grease filling chambers 21 and 22 does not rotate during operation, so centrifugal force does not act, It is held in a stable state without moving in the bearing.
【００２５】また、長期間の使用により潤滑グリースよ
り分離した基油分のみが軸受内に供給され、安定した潤
滑が維持される。この軸受内に供給された潤滑油分は、
回転により外周側に寄せられ、コロ８ｃ等の潤滑を行う
が、このときコロ８ｃの回転により軸受外に押出される
作用を受ける。しかし、この油分は端蓋１８及び回転子
フレーム７に設けられている段差部（Ｈ１）と軸受外輪
の内周面により形成される袋状空間部に遠心力により封
じ込められる作用を受けるので、グリース充填室の外周
面の微小隙間（ラビリンス）ｘ部より油分が逃出すこと
はなく、長期間安定した潤滑が維持される。Also, only the base oil separated from the lubricating grease after long-term use is supplied into the bearing, and stable lubrication is maintained. The lubricating oil supplied to this bearing is
By the rotation, the rollers 8c are brought closer to the outer peripheral side to lubricate the rollers 8c and the like. However, this oil component is subjected to the action of being confined by the centrifugal force in the bag-shaped space portion formed by the stepped portion (H1) provided on the end cover 18 and the rotor frame 7 and the inner peripheral surface of the bearing outer ring, so that the grease Oil does not escape from the minute gap (labyrinth) x on the outer peripheral surface of the filling chamber, and stable lubrication is maintained for a long period of time.
【００２６】図２は本発明の第２の実施例を示す車輪側
軸受部の断面図である。図２において、車輪１０に軸受
９の外輪９ａが支持され、車軸３に内輪９ｂが固定部材
を介して支持されると共に、これら外輪９ａと内輪９ｂ
との間に複数個のコロ８ｃが円周上に等間隔に配置され
る。FIG. 2 is a sectional view of a wheel side bearing portion showing a second embodiment of the present invention. In FIG. 2, an outer ring 9a of a bearing 9 is supported on a wheel 10, an inner ring 9b is supported on an axle 3 via a fixing member, and the outer ring 9a and the inner ring 9b are also supported.
And a plurality of rollers 8c are arranged at equal intervals on the circumference.
【００２７】このような軸受９の両側面に環状の端蓋２
３，２４が車軸３側の固定部材に組合わせて設けられ、
これら端蓋２３，２４の外周部を車輪１０の軸挿入部の
内側、外側端面にボルトにて固定される。An annular end cover 2 is provided on both sides of the bearing 9.
3, 24 are provided in combination with the fixing member on the axle 3 side,
The outer peripheral portions of these end covers 23, 24 are fixed to the inner and outer end surfaces of the shaft insertion portion of the wheel 10 with bolts.
【００２８】上記端蓋２３，２４には、軸受内に開口し
た環状のグリース充填室２５が設けられると共に、この
グリース充填室２５の半径方向に複数の空間部が形成さ
れるように仕切る仕切板２６が設けられ、これらグリー
ス充填室２５の各空間部に潤滑グリースが充填される。The end lids 23 and 24 are provided with an annular grease filling chamber 25 that opens into the bearing, and a partition plate that partitions the grease filling chamber 25 so as to form a plurality of spaces in the radial direction. 26 is provided, and lubricating grease is filled in each space of these grease filling chambers 25.
【００２９】上記第２の実施例による構成の車輪一体形
モータの軸受装置にあっては、運転時は車輪１０と共に
端蓋２３，２４も回転するので、グリース充填室２５に
充填された潤滑グリースに遠心力が作用するが、グリー
ス充填室２５は仕切板２６により仕切られているので、
この仕切板２６により潤滑グリースの移動が阻止され
る。これによりグリース充填室２５よりグリースが軸受
内に移動しないので、撹拌されることはない。In the bearing device for the wheel-integrated motor having the structure according to the second embodiment, since the end caps 23 and 24 rotate together with the wheel 10 during operation, the lubricating grease filled in the grease filling chamber 25. Centrifugal force acts on the grease filling chamber 25, but since the grease filling chamber 25 is partitioned by the partition plate 26,
The partition plate 26 blocks the movement of the lubricating grease. As a result, the grease does not move from the grease filling chamber 25 into the bearing, so that it is not agitated.
【００３０】また、上記車輪側軸受部はモータ側軸受部
に対して軸受直径が比較的小さくなるため、遠心力も比
較的小さくなり、本構造によりグリースの撹拌防止を図
ることが可能となる。Further, since the bearing diameter of the wheel-side bearing portion is relatively smaller than that of the motor-side bearing portion, the centrifugal force is also relatively small, and this structure makes it possible to prevent grease agitation.
【００３１】図３は本発明の第３の実施例を示すモータ
側軸受部の断面図であり、図４は図３に示す端蓋のＡ矢
視図である。図３に示すように回転子フレーム７の軸受
側端部に形成された環状段差形状の軸受保持面に軸受外
輪８ａが支持され、この軸受外輪８ａの一側面に端蓋２
７が設けられると共に、この端蓋２７は回転子フレーム
７の外側端面にボルトにて固定される。FIG. 3 is a sectional view of a motor side bearing portion showing a third embodiment of the present invention, and FIG. 4 is a view of the end cover shown in FIG. As shown in FIG. 3, the bearing outer ring 8a is supported on a bearing holding surface of an annular step shape formed at the bearing side end of the rotor frame 7, and the end cover 2 is attached to one side surface of the bearing outer ring 8a.
7, the end cover 27 is fixed to the outer end surface of the rotor frame 7 with bolts.
【００３２】また、軸受外輪８ａに対応させて軸受内輪
８ｂが固定子部材１５に支持されると共に、これら軸受
外輪８ａと内輪８ｂの間に複数個のコロ８ｃが保持器８
ｄに保持させて円周上に等間隔に配置される。The bearing inner ring 8b is supported by the stator member 15 so as to correspond to the bearing outer ring 8a, and a plurality of rollers 8c are provided between the bearing outer ring 8a and the inner ring 8b.
They are held at d and arranged at equal intervals on the circumference.
【００３３】上記回転子フレーム７の軸受側端部に有す
る軸受保持部には、グリース充填室２８が形成されると
共に、その中に潤滑グリースが充填される。このグリー
ス充填室２８の軸受側側面には内輪８ｂ側に抜ける開口
部が形成されるように環状の隔壁２９が設けられる。A grease filling chamber 28 is formed in the bearing holding portion provided at the bearing side end portion of the rotor frame 7, and lubricating grease is filled therein. An annular partition wall 29 is provided on the bearing side surface of the grease filling chamber 28 so as to form an opening through which the inner ring 8b exits.
【００３４】一方、上記端蓋２７には図４に示すように
内側に外径ｄ3 の環状のグリース充填室３０が形成さ
れ、このグリース充填室３０は円周上に適宜の間隔を存
して配置された複数個の仕切板３１により複数の部屋に
区切られ、この中に潤滑グリースが充填される。On the other hand, an annular grease filling chamber 30 having an outer diameter d 3 is formed inside the end cover 27 as shown in FIG. 4, and the grease filling chamber 30 has an appropriate space on its circumference. A plurality of partition plates 31 arranged in this manner divide the room into a plurality of chambers, into which lubricating grease is filled.
【００３５】また、グリース充填室３０の軸受側側面に
は環状の隔壁３２が設けられ、この隔壁３２の内径ｄ4
部グリース充填室３０の空間の内径部との間に設けられ
た環状の開口部３３によりグリース充填室３０と軸受内
とが連通している。An annular partition wall 32 is provided on the bearing side surface of the grease filling chamber 30, and the inner diameter d 4 of this partition wall 32 is set.
The grease filling chamber 30 communicates with the inside of the bearing by an annular opening 33 provided between the grease filling chamber 30 and the inner diameter portion of the space.
【００３６】上記第３の実施例による構成の車輪一体形
モータの軸受装置にあっては、運転時にはグリース充填
室３０に充填されたグリースに対して遠心力が作用する
が、グリースはグリース充填室３０の軸受側側面を覆う
隔壁３２によりグリース充填室３０内に保持され、軸受
内に移動することはない。In the bearing device for a wheel-integrated motor having the structure according to the third embodiment, centrifugal force acts on the grease filled in the grease filling chamber 30 during operation. It is held in the grease filling chamber 30 by the partition wall 32 that covers the bearing side surface of the bearing 30, and does not move into the bearing.
【００３７】また、回転子フレーム７の軸受保持部に形
成されたグリース充填室２８のグリースも軸受内の内輪
８ｂ側に抜ける開口部が隔壁２９により狭くなっている
ので、上記同様にグリースに対して遠心力が作用して
も、グリースはグリース充填室２８の軸受側側面を覆う
隔壁２９によりグリース充填室２８内に保持され、軸受
内に移動することはない。Further, the grease of the grease filling chamber 28 formed in the bearing holding portion of the rotor frame 7 is narrowed by the partition wall 29, so that the opening of the grease in the grease filling chamber 28 in the bearing toward the inner ring 8b side is narrowed. Even if centrifugal force is applied, the grease is held in the grease filling chamber 28 by the partition wall 29 that covers the bearing-side side surface of the grease filling chamber 28 and does not move into the bearing.
【００３８】また、長期間の使用により潤滑グリースよ
り基油分が分離し、車両の運転が駅で停止する時や、運
転が終了して車庫入りした時にはグリース充填室内のグ
リースより分離した基油が開口部３３より軸受内に流入
し供給される。Further, the base oil separated from the lubricating grease after long-term use causes the base oil separated from the grease in the grease filling chamber when the operation of the vehicle is stopped at the station or when the operation is completed and the vehicle enters the garage. It is supplied by flowing into the bearing through the opening 33.
【００３９】このようにグリース充填室内で分離した基
油は、運転時は遠心力の作用によりグリース充填室内に
と止められるが、回転停止時にはグリースから染出した
基油が仕切板３１により仕切られたグリース充填室３０
の上半分に位置するグリース終点室３０の開口部３３よ
り軸受内に流入する。The base oil thus separated in the grease filling chamber is stopped in the grease filling chamber by the action of centrifugal force during operation, but the base oil exuded from the grease is partitioned by the partition plate 31 when the rotation is stopped. Grease filling chamber 30
The grease flows into the bearing through the opening 33 of the grease end point chamber 30 located in the upper half.
【００４０】従って、回転中にグリースが軸受内に移動
して撹拌されることがなくなり、停止時には油分のみが
軸受内に供給されるため、長期間安定した潤滑を維持す
ることができる。Therefore, the grease is prevented from moving into the bearing and being stirred during rotation, and only oil is supplied into the bearing at the time of stop, so that stable lubrication can be maintained for a long period of time.
【００４１】[0041]
【発明の効果】以上述べたように本発明によれば、遠心
力による作用により軸受内部でのグリースの撹拌をなく
して長期間安定した潤滑を維持すると共に、遠心力を受
けても充填グリースが軸受内での移動を防止し、もって
安定した潤滑を維持することができる車輪一体形回転電
機の軸受装置を提供できる。As described above, according to the present invention, the action of centrifugal force eliminates the agitation of grease inside the bearing to maintain stable lubrication for a long period of time, and the filled grease keeps the filled grease even when subjected to centrifugal force. It is possible to provide a bearing device for a wheel-integrated rotary electric machine that can prevent movement within the bearing and thus maintain stable lubrication.
【図１】本発明による車輪一体形回転電機の軸受装置の
第１の実施例を示すモータ側軸受部の断面図。FIG. 1 is a sectional view of a motor-side bearing portion showing a first embodiment of a bearing device for a wheel-integrated rotary electric machine according to the present invention.
【図２】本発明の第２の実施例を示す車輪軸受部の断面
図。FIG. 2 is a sectional view of a wheel bearing portion showing a second embodiment of the present invention.
【図３】本発明の第３の実施例を示すモータ側軸受部の
断面図。FIG. 3 is a sectional view of a motor side bearing portion showing a third embodiment of the present invention.
【図４】図３に示す端蓋のＡ矢視図。FIG. 4 is a view of the end cover shown in FIG.
【図５】車輪一体形回転電機の構成例を示す部分断面
図。FIG. 5 is a partial cross-sectional view showing a configuration example of a wheel-integrated rotary electric machine.
【図６】従来の車輪一体形モータの軸受構造を示す断面
図。FIG. 6 is a sectional view showing a bearing structure of a conventional wheel-integrated motor.
【図７】同軸受内の遠心力によるグリースの移動状態を
示す断面図。FIG. 7 is a sectional view showing a moving state of grease due to centrifugal force in the bearing.
１……台車枠、２……軸支持箱、３……車軸、４……コ
イル、５……固定子鉄心、６……永久磁石、７……回転
子フレーム、８……モータ側軸受、９……車輪側軸受、
１０……車輪、１１……ブラケット、１５……固定部
材、１８，１９，２０……端蓋、２１，２２，２５，２
８，３０……グリース充填室、２３，２４，２７……端
蓋、２６，３１……仕切板、３２，２９……隔壁、３３
……開口部。1 ... Bogie frame, 2 ... Shaft support box, 3 ... Axle, 4 ... Coil, 5 ... Stator core, 6 ... Permanent magnet, 7 ... Rotor frame, 8 ... Motor side bearing, 9 ... Wheel side bearing,
10 ... Wheels, 11 ... Brackets, 15 ... Fixing members, 18, 19, 20 ... End lids 21, 22, 25, 2
8, 30 ... Grease filling chamber, 23, 24, 27 ... End cover, 26, 31 ... Partition plate, 32, 29 ... Partition wall, 33
……Aperture.
フロントページの続き (72)発明者 八木 信行 東京都府中市東芝町１番地 株式会社東 芝府中工場内 (72)発明者 川路 俊一 東京都府中市東芝町１番地 株式会社東 芝府中工場内 (56)参考文献 特開 平７−103228（ＪＰ，Ａ) 特開 平５−16800（ＪＰ，Ａ) 特開 昭57−6550（ＪＰ，Ａ) 実開 昭58−19123（ＪＰ，Ｕ) 実開 平５−45246（ＪＰ，Ｕ) 実開 昭61−4018（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16C 19/00 - 19/56 F16C 33/30 - 33/66 B61C 9/44 Front page continuation (72) Inventor Nobuyuki Yagi No.1 Toshiba Town Fuchu, Tokyo Fuchu factory Co., Ltd. (72) Inventor Shunichi Kawaji No.1 Toshiba Town Fuchu city, Tokyo Fuchu factory (56) ) References JP-A-7-103228 (JP, A) JP-A-5-16800 (JP, A) JP-A-57-6550 (JP, A) Actual development Sho-58-19123 (JP, U) Actual development flat 5-45246 (JP, U) Actual development 61-4018 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) F16C 19/00-19/56 F16C 33/30-33 / 66 B61C 9/44
Claims (2)
輪側軸受を介して車輪を回転自在に支持すると共に、前
記車軸の中央部付近に固定された固定子部材に回転子フ
レームの一端側を回転機側軸受を介して回転自在に支持
すると共に、この回転子フレームの他端側を前記車輪に
結合して回転体を構成し、且つ前記両軸受間の車軸上に
コイルを有する固定子が固定支持された構造のアウタロ
ータタイプの車輪一体形回転電機の軸受装置において、 前記回転子部材に支持させて前記回転機側軸受の側面に
端蓋を取付け、この端蓋に軸受側面に開口した環状のグ
リース充填室を設けると共に、このグリース充填室に潤
滑グリースを充填する構成とし、 且つ前記グリース充填室の外周壁の外径が前記回転機側
軸受の外輪の内径よりも小さくしたことを特徴とする車
輪一体形回転電機の軸受装置。1. A wheel is rotatably supported on one end of an axle fixedly supported by a bogie via a wheel side bearing, and one end of a rotor frame is attached to a stator member fixed near the center of the axle. Side is rotatably supported via a bearing on the rotating machine side, and the other end side of this rotor frame is connected to the wheel to form a rotating body, and a coil is fixed on the axle between the both bearings. In a bearing device for an outer rotor type wheel-integrated rotating electric machine having a structure in which a child is fixedly supported, an end cover is attached to a side surface of the rotor side bearing supported by the rotor member, and an opening is formed in the side surface of the bearing on the end cover. A ring-shaped grease filling chamber is provided, the grease filling chamber is filled with lubricating grease, and the outer diameter of the outer peripheral wall of the grease filling chamber is smaller than the inner diameter of the outer ring of the rotary machine side bearing. The bearing device of the wheel integral rotary electric machine, wherein.
輪側軸受を介して車輪を回転自在に支持すると共に、前
記車軸の中央部付近に固定された固定子部材に回転子フ
レームの一端側を回転機側軸受を介して回転自在に支持
すると共に、この回転子フレームの他端側を前記車輪に
結合して回転体を構成し、且つ前記両軸受間の車軸上に
コイルを有する固定子が固定支持された構造のアウタロ
ータタイプの車輪一体形回転電機の軸受装置において、 前記回転子フレームに支持させて前記回転電機側軸受の
側面に端蓋を取付け、この端蓋の内部に環状空間にした
グリース充填室を設け、このグリース充填室内を円周方
向に複数に区分する仕切板を設けて潤滑グリースを充填
し、且つ前記グリース充填室の軸受側の側壁の内径側に
開口部を設けてグリース充填室内と軸受内部とを連通さ
せたことを特徴とする車輪一体形回転電機の軸受装置。2. A wheel is rotatably supported on one end of an axle fixedly supported by a trolley via a wheel-side bearing, and one end of a rotor frame is attached to a stator member fixed near the center of the axle. Side is rotatably supported via a bearing on the rotating machine side, and the other end side of this rotor frame is connected to the wheel to form a rotating body, and a coil is fixed on the axle between the both bearings. In a bearing device for an outer rotor type wheel-integrated rotary electric machine having a structure in which a child is fixedly supported, an end cover is attached to a side surface of the rotary electric machine side bearing supported by the rotor frame, and an annular space is provided inside the end cover. Is provided with a partition plate that divides the grease filling chamber into a plurality of sections in the circumferential direction to fill lubricating grease, and an opening is provided on the inner diameter side of the bearing side wall of the grease filling chamber. Tegu The bearing device of the wheel integral rotary electric machine, characterized in that communicates with the internal over scan filling chamber and the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14878195A JP3417726B2 (en) | 1995-06-15 | 1995-06-15 | Bearing device for wheel-integrated rotating electrical machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14878195A JP3417726B2 (en) | 1995-06-15 | 1995-06-15 | Bearing device for wheel-integrated rotating electrical machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08338426A JPH08338426A (en) | 1996-12-24 |
| JP3417726B2 true JP3417726B2 (en) | 2003-06-16 |
Family
ID=15460538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14878195A Expired - Fee Related JP3417726B2 (en) | 1995-06-15 | 1995-06-15 | Bearing device for wheel-integrated rotating electrical machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3417726B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100572835C (en) * | 2004-10-29 | 2009-12-23 | 株式会社捷太格特 | Rolling bearing system and axle |
| FR3101596A1 (en) * | 2019-10-08 | 2021-04-09 | Alstom Transport Technologies | Motor and / or generator for a rail vehicle, associated bogie and rail vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6164832A (en) * | 1998-05-18 | 2000-12-26 | E. I. Du Pont De Nemours And Company | Ball bearing assembly |
| JP2005180629A (en) * | 2003-12-22 | 2005-07-07 | Ntn Corp | Rolling bearing |
| KR20070083655A (en) * | 2004-10-08 | 2007-08-24 | 엔티엔 가부시키가이샤 | Rolling bearing |
| KR20070083741A (en) | 2004-10-29 | 2007-08-24 | 가부시키가이샤 제이텍트 | Rolling bearing device and spindle |
| KR20070097037A (en) | 2004-12-14 | 2007-10-02 | 가부시키가이샤 제이텍트 | Rolling bearing device |
| WO2007032204A1 (en) | 2005-09-15 | 2007-03-22 | Ntn Corporation | Rolling bearing, spindle support structure of main motor for railway vehicle, and bearing structure |
| JP2007132416A (en) * | 2005-11-09 | 2007-05-31 | Ntn Corp | Rolling bearing |
| WO2007077706A1 (en) | 2006-01-05 | 2007-07-12 | Ntn Corporation | Rolling bearing |
| JP5549587B2 (en) * | 2008-07-25 | 2014-07-16 | 株式会社ジェイテクト | Rolling bearing device and method for forming lubricating means thereof |
| JP6414663B2 (en) * | 2014-04-15 | 2018-10-31 | 株式会社ジェイテクト | Rolling bearing device |
| CN104527660B (en) * | 2014-12-15 | 2017-04-05 | 中车青岛四方机车车辆股份有限公司 | A kind of electric-machine directly-driven bogie |
| CN104527661B (en) * | 2014-12-15 | 2017-04-05 | 中车青岛四方机车车辆股份有限公司 | A kind of steering framing wheel is to drive system and the bogie using the system |
-
1995
- 1995-06-15 JP JP14878195A patent/JP3417726B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100572835C (en) * | 2004-10-29 | 2009-12-23 | 株式会社捷太格特 | Rolling bearing system and axle |
| FR3101596A1 (en) * | 2019-10-08 | 2021-04-09 | Alstom Transport Technologies | Motor and / or generator for a rail vehicle, associated bogie and rail vehicle |
| EP3805583A1 (en) * | 2019-10-08 | 2021-04-14 | ALSTOM Transport Technologies | Engine and/or generator for a railway vehicle, associated bogie and railway vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08338426A (en) | 1996-12-24 |
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