JPH05280535A - Oil film damper - Google Patents

Oil film damper

Info

Publication number
JPH05280535A
JPH05280535A JP4082217A JP8221792A JPH05280535A JP H05280535 A JPH05280535 A JP H05280535A JP 4082217 A JP4082217 A JP 4082217A JP 8221792 A JP8221792 A JP 8221792A JP H05280535 A JPH05280535 A JP H05280535A
Authority
JP
Japan
Prior art keywords
oil film
oil
bearing
damper
film damper
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
Application number
JP4082217A
Other languages
Japanese (ja)
Inventor
Tomiaki Ochiai
富明 落合
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GKN Driveline Japan Ltd
Original Assignee
Tochigi Fuji Sangyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tochigi Fuji Sangyo KK filed Critical Tochigi Fuji Sangyo KK
Priority to JP4082217A priority Critical patent/JPH05280535A/en
Publication of JPH05280535A publication Critical patent/JPH05280535A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/04Ball or roller bearings, e.g. with resilient rolling bodies
    • F16C27/045Ball or roller bearings, e.g. with resilient rolling bodies with a fluid film, e.g. squeeze film damping
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00Engines or pumps
    • F16C2360/44Centrifugal pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supercharger (AREA)
  • Support Of The Bearing (AREA)
  • General Details Of Gearings (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

PURPOSE:To provide an oil film damper wherein an oil film is prevented from its run out due to weight of a bearing with a rotary side member to obtain a sufficient damper effect from a low rotational speed region. CONSTITUTION:An oil film damper 1 is provided with a bearing 83 for supporting a rotary shaft 81, fixed side member 73 for supporting this bearing 83 through an oil film 85 and a nozzle 97 for supplying oil to the oil film 85 while giving a pressure of oil upward in a gravitational direction to the bearing 83.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、オイルフィルムタン
パに関する。
This invention relates to an oil film tamper.

【0002】[0002]

【従来の技術】特表平3−500317号公報に「内燃
機関の機械駆動式過給機」が記載されている。これは、
増速歯車機構を備えた機械式過給機であり、この過給機
のインペラシャフトを支承するベアリングはオイルフィ
ルムダンパを介して固定側部材に支承されている。
2. Description of the Related Art Japanese Unexamined Patent Publication No. 3-500317 discloses a "mechanical drive type supercharger for an internal combustion engine". this is,
This is a mechanical supercharger equipped with a speed increasing gear mechanism, and a bearing that supports an impeller shaft of the supercharger is supported by a stationary member via an oil film damper.

【0003】[0003]

【発明が解決しようとする課題】ところが、図4に示す
ように、低回転数域でベアリング201は自重と回転部
材の重量によりオイルフィルムダンパ203の下部に沈
んでおり固定側部材205と接触状態にある。従って、
起動後回転数が充分に上昇するまではオイルフィルムダ
ンパ203のダンパの効果が不充分であり、異常振動が
生じることがある。又、オイルフィルムダンパ203に
ノズル207を介してオイルを供給するように構成した
例では、図4のようにノズル207は重力方向上方に配
置されておりベアリング201はその油圧209によっ
て固定側部材205に押付けられ、ダンパ効果は更に損
われる。
However, as shown in FIG. 4, the bearing 201 is sunk in the lower part of the oil film damper 203 due to its own weight and the weight of the rotating member in the low rotation speed range, and is in contact with the fixed side member 205. It is in. Therefore,
The effect of the damper of the oil film damper 203 is insufficient until the rotational speed is sufficiently increased after the start, and abnormal vibration may occur. Further, in the example in which oil is supplied to the oil film damper 203 through the nozzle 207, the nozzle 207 is arranged above in the gravity direction as shown in FIG. 4, and the bearing 201 is fixed by the hydraulic pressure 209 to the fixed member 205. The damper effect is further impaired.

【0004】そこで、この発明は、低回転域でも充分な
ダンパ効果が得られ、異常振動の発生を防止するオイル
フィルムダンパの提供を目的とする。
Therefore, an object of the present invention is to provide an oil film damper capable of obtaining a sufficient damper effect even in a low rotation range and preventing occurrence of abnormal vibration.

【0005】[0005]

【課題を解決するための手段】この発明のオイルフィル
ムダンパは、回転軸を支承するベアリングと、このベア
リングをオイルフィルムを介して支承する固定側部材
と、ベアリングに重力方向上方への油圧を与えながらオ
イルフィルムにオイルを供給するノズルとを備えたこと
を特徴とする。
An oil film damper of the present invention includes a bearing for supporting a rotating shaft, a fixed member for supporting the bearing via an oil film, and a hydraulic pressure upward in the gravity direction. However, it is characterized by having a nozzle for supplying oil to the oil film.

【0006】[0006]

【作用】ノズルにより重力方向上向きに与えられる油圧
により、自重と回転側部材の重量によるベアリングの沈
み込みが防止され、オイルフィルムダンパのダンパ効果
が正常に保たれる。こうして、低回転数域から充分なダ
ンパ効果が得られるから回転側部材の異常振動の発生が
防止される。
With the hydraulic pressure applied upward by the nozzle in the direction of gravity, the bearing is prevented from sinking due to its own weight and the weight of the rotating member, and the damper effect of the oil film damper is normally maintained. In this way, a sufficient damper effect can be obtained from the low rotation speed range, so that the abnormal vibration of the rotating member is prevented.

【0007】[0007]

【実施例】図1ないし図3により一実施例の説明をす
る。図1に示すように、この実施例のオイルフィルムダ
ンパ1は遠心エアコンプレッサ型の過給機3に用いられ
ている。図1はベルト式無段変速機5と増速部7とこの
過給機3とを示している。以下、左右の方向は図1と図
3での左右の方向であり、符号を付していない部材等は
図示されていない。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment will be described with reference to FIGS. As shown in FIG. 1, the oil film damper 1 of this embodiment is used in a centrifugal air compressor type supercharger 3. FIG. 1 shows a belt type continuously variable transmission 5, a speed increasing unit 7 and the supercharger 3. Hereinafter, the left and right directions are the left and right directions in FIGS. 1 and 3, and members and the like without reference numerals are not shown.

【0008】ベルト式無段変速機5は、ドライブプーリ
9とドリブンプーリ11とこれらを連結するベルト13
とを備えている。ドライブプーリ9は中空軸15と一体
の固定フランジ17と、中空軸15に軸方向移動自在に
連結された可動フランジ19とを備えている。固定フラ
ンジ17にはプーリを固定するねじ穴21が設けられて
おり、ドライブプーリ9はこのプーリを含めたベルト伝
動機構を介してエンジンのクランクシャフトにより回転
駆動される。中空軸15はベアリング23,25を介し
て支持軸27上に支承されており、支持軸27はボルト
29とナット31により増速部7のケーシング33に固
定されている。固定フランジ17と可動フランジ19と
の間にはベルト13が装着されており、可動フランジ1
9は中空軸15に装着された止め輪35とリテーナ37
とを介し皿ばね39によって固定フランジ17側に押圧
され、ベルト13に張力を与えている。
The belt type continuously variable transmission 5 includes a drive pulley 9, a driven pulley 11 and a belt 13 connecting them.
It has and. The drive pulley 9 includes a fixed flange 17 that is integral with the hollow shaft 15, and a movable flange 19 that is connected to the hollow shaft 15 so as to be movable in the axial direction. The fixing flange 17 is provided with a screw hole 21 for fixing the pulley, and the drive pulley 9 is rotationally driven by the crankshaft of the engine via a belt transmission mechanism including this pulley. The hollow shaft 15 is supported on a support shaft 27 via bearings 23 and 25, and the support shaft 27 is fixed to a casing 33 of the speed increasing unit 7 by a bolt 29 and a nut 31. The belt 13 is mounted between the fixed flange 17 and the movable flange 19, and the movable flange 1
9 is a retaining ring 35 and a retainer 37 mounted on the hollow shaft 15.
It is pressed against the fixed flange 17 side by the disc spring 39 via the and to apply tension to the belt 13.

【0009】ドリブンプーリ11は、増速部7の入力軸
41にそれぞれ圧入されナット43により脱落防止を施
された中空軸45とカム部材47と、中空軸45と一体
の固定フランジ49と、カム部材47との間に設けられ
た噛合い部51を介して軸方向移動自在に連結された可
動フランジ53とを備えている。中空軸45の右端はベ
アリング55を介してケーシング33に支承され、入力
軸41はベアリング57,59を介してケーシング33
に支承されている。各フランジ49,53間にはベルト
13が装着され、ドリブンプーリ11とドライブプーリ
9とを連結している。
The driven pulley 11 has a hollow shaft 45 and a cam member 47, which are press-fitted into the input shaft 41 of the speed increasing portion 7 and are prevented from falling off by a nut 43, a fixed flange 49 integral with the hollow shaft 45, and a cam. The movable flange 53 is movably connected in the axial direction via a meshing portion 51 provided between the member 47 and the member 47. The right end of the hollow shaft 45 is supported on the casing 33 via a bearing 55, and the input shaft 41 is supported on the casing 33 via bearings 57 and 59.
Is supported by. The belt 13 is mounted between the flanges 49 and 53, and connects the driven pulley 11 and the drive pulley 9.

【0010】カム部材47と可動フランジ53にはそれ
ぞれカム面61,61が形成され、これらの間にはフラ
イウェート63が配置されている。ドリブンプーリ11
が回転するとフライウェート63の遠心力がカム面6
1,61に働き、生じたカムスラスト力によって可動フ
ランジ53が固定フランジ49側に押圧される。
Cam surfaces 61 and 61 are formed on the cam member 47 and the movable flange 53, respectively, and a fly weight 63 is arranged between them. Driven pulley 11
When the flywheel rotates, the centrifugal force of the fly weight 63 causes the cam surface 6 to rotate.
The movable flange 53 is pressed against the fixed flange 49 side by the generated cam thrust force.

【0011】エンジン回転数の上昇に伴ってドリブンプ
ーリ11の回転数が上昇すると、カムスラスト力の増加
によりドリブンプーリ11のフランジ間隔が狭まってプ
ーリピッチ径R2 が大きくなると共に、ベルト13の張
力によってドライブプーリ9のフランジ間隔が拡がり、
プーリピッチ径R1 が小さくなってドリブンプーリ11
側の増速率が下がる。又、エンジン回転数が降下する
と、カムスラスト力が低下してドライブプーリ9の皿ば
ね39によりプーリピッチ径R1 が大きくなりプーリピ
ッチ径R2 が小さくなって増速率が上がる。こうして、
ドリブンプーリ11側の回転数変動幅はエンジン回転数
の変動幅より小さく抑えられ、エンジン回転数が上昇す
るとドリブンプーリ11の回転数はほぼ一定になる。
When the rotational speed of the driven pulley 11 increases as the engine rotational speed increases, the cam thrust force increases to narrow the flange spacing of the driven pulley 11 to increase the pulley pitch diameter R 2 and drive the belt 13 with tension. The flange spacing of the pulley 9 expands,
The pulley pitch diameter R 1 becomes smaller and the driven pulley 11
The speed increase rate on the side decreases. When the engine speed decreases, the cam thrust force decreases, and the disc spring 39 of the drive pulley 9 increases the pulley pitch diameter R 1 and decreases the pulley pitch diameter R 2 to increase the speedup rate. Thus
The fluctuation range of the rotational speed on the driven pulley 11 side is suppressed to be smaller than the fluctuation range of the engine rotational speed, and when the engine rotational speed increases, the rotational speed of the driven pulley 11 becomes substantially constant.

【0012】増速部7はプラネタリーギヤ機構であり、
インターナルギヤ65は入力軸41の右端側に一体形成
されており、ピニオンギヤ67はベアリング69を介し
てピニオンシャフト71に支承されている。ピニオンシ
ャト71はケーシング33のフランジ部73(固定側部
材)の係合穴75に支承され、ねじとボールとからなる
脱落防止手段77が施されている。サンギヤ79は過給
機3のインペラシャフト81(回転軸)の左端側に形成
されている。インペラシャフト81はユニットベアリン
グ83(ベアリング)と、ユニットベアリング83とフ
ランジ部73との間にオイルフィルム85を形成してな
るオイルフィルムダンパ1とを介してフランジ部73に
支承されている。インペラシャフト81にはインペラ8
7が圧入され、右端にはインペラ87の脱落防止部材8
9が過締められている。ユニットベアリング83は自重
とインペラシャフト81とインペラ87と脱落防止部材
89の重量によりオイルフィルムダンパ1の下向きに沈
んでいる。
The speed increasing unit 7 is a planetary gear mechanism,
The internal gear 65 is integrally formed on the right end side of the input shaft 41, and the pinion gear 67 is supported by the pinion shaft 71 via a bearing 69. The pinion shut 71 is supported in the engagement hole 75 of the flange portion 73 (fixed side member) of the casing 33, and is provided with a dropout prevention means 77 including a screw and a ball. The sun gear 79 is formed on the left end side of the impeller shaft 81 (rotating shaft) of the supercharger 3. The impeller shaft 81 is supported by the flange portion 73 via a unit bearing 83 (bearing) and an oil film damper 1 having an oil film 85 formed between the unit bearing 83 and the flange portion 73. The impeller 8 is attached to the impeller shaft 81.
7 is press-fitted, and the impeller 87 is prevented from falling off at the right end.
9 is overtightened. The unit bearing 83 is sunk downward in the oil film damper 1 due to its own weight, the weight of the impeller shaft 81, the impeller 87 and the fall prevention member 89.

【0013】フランジ部73の外周には円周溝91が設
けられ、重力方向下方には円周溝91と連通する4本の
油路93が設けられている。円周溝91の左右にはオイ
ル洩れを防止するOリング95,95が配置されてい
る。各油路93にはオイルフィルムダンパ1に開口する
上向きのノズル97が設けられている。ケーシング33
にはオイルポンプに接続されたオイルプラグ99が取付
けられており、オイルポンプからのオイルを円周溝91
と油路93とを介して各ノズル97からオイルフィルム
ダンパ1に供給すると共に、ユニットベアリング83に
上向きの油圧101(図3)を加える。この油圧101
によって上記のようなユニットベアリング83の沈み込
みが防止され、オイルフィルムダンパ1のダンパ効果が
正常に保たれる。
A circumferential groove 91 is provided on the outer periphery of the flange portion 73, and four oil passages 93 communicating with the circumferential groove 91 are provided below the direction of gravity. O-rings 95, 95 for preventing oil leakage are arranged on the left and right of the circumferential groove 91. Each oil passage 93 is provided with an upward nozzle 97 opening to the oil film damper 1. Casing 33
An oil plug 99 connected to an oil pump is attached to the oil pump 99, and oil from the oil pump is attached to the circumferential groove 91.
The oil is supplied to the oil film damper 1 from each nozzle 97 via the oil passage 93 and the oil passage 93, and the upward hydraulic pressure 101 (FIG. 3) is applied to the unit bearing 83. This hydraulic pressure 101
As a result, the sinking of the unit bearing 83 as described above is prevented, and the damper effect of the oil film damper 1 is normally maintained.

【0014】オイルフィルムダンパ1に供給されたオイ
ルは油路103から排油穴104に供給され、更にケー
シング33の内容を潤滑した後外部に排出される。ケー
シング33と入力軸41及びユニットベアリング83と
インペラシャフト81との間にはオイル洩れを防止する
シール105,107が配置されている。
The oil supplied to the oil film damper 1 is supplied from the oil passage 103 to the oil drain hole 104, further lubricates the contents of the casing 33, and then is discharged to the outside. Seals 105 and 107 for preventing oil leakage are arranged between the casing 33, the input shaft 41, the unit bearing 83 and the impeller shaft 81.

【0015】又、図4に示した従来例と異ってノズル9
7はケーシング33とフランジ部73とを連結していな
いから、それだけ組付けが簡単である。
Further, unlike the conventional example shown in FIG. 4, the nozzle 9 is used.
Since 7 does not connect the casing 33 and the flange portion 73, the assembling is as easy as that.

【0016】過給機3のインペラ87はコンプレッサハ
ウジング109の内部に配置され、コンプレッサハウジ
ング109はケーシング33の円周溝111に係合した
連結部材113とボルト115とを介し、フランジ部7
3と共に、ケーシング33に取付けられている。
The impeller 87 of the supercharger 3 is arranged inside the compressor housing 109, and the compressor housing 109 is connected to the circumferential groove 111 of the casing 33 via the connecting member 113 and the bolt 115, and the flange portion 7 is provided.
3 is attached to the casing 33.

【0017】ベルト式無段変速5を介して上記のように
変速され増速部7に入力したエンジンの駆動力は、イン
ターナルギヤ65からピニオンギヤ67とサンギヤ79
とを介して増速されてインペラ87を回転駆動し、過給
機3は加圧した吸気によりエンジンを過給する。
The driving force of the engine, which has been shifted as described above through the belt type continuously variable transmission 5 and is input to the speed increasing unit 7, receives the internal gear 65, the pinion gear 67 and the sun gear 79.
And the impeller 87 is driven to rotate, and the supercharger 3 supercharges the engine with the pressurized intake air.

【0018】上記のように、ノズル97からの油圧10
1により回転数の立上がりと立下がり時の低回転数域で
もオイルフィルムダンパ1による充分なダンパ効果が得
られるから、インペラ87の異常振動が生じない。
As described above, the hydraulic pressure 10 from the nozzle 97 is
1, the sufficient damping effect of the oil film damper 1 can be obtained even in the low rotation speed range when the rotation speed rises and falls, so that the abnormal vibration of the impeller 87 does not occur.

【0019】[0019]

【発明の効果】この発明のオイルフィルムダンパは、オ
イルを供給するノズルによりベアリングに重力方向上向
きの油圧を加えるように構成したから、従来はダンパ効
果が低下する低回転数域でも充分なダンパ効果が得ら
れ、回転側部材の異常振動が防止される。
Since the oil film damper according to the present invention is constructed such that the oil pressure is applied upwardly to the bearing by the nozzle for supplying oil, the conventional damper has a sufficient damper effect even in a low rotational speed range where the damper effect is lowered. Is obtained, and abnormal vibration of the rotating member is prevented.

【図面の簡単な説明】[Brief description of drawings]

【図1】一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment.

【図2】この実施例に用いられたフランジ部の正面図で
ある。
FIG. 2 is a front view of a flange portion used in this embodiment.

【図3】図2のA−A断面図である。3 is a cross-sectional view taken along the line AA of FIG.

【図4】従来例を示す断面図である。FIG. 4 is a cross-sectional view showing a conventional example.

【符号の説明】[Explanation of symbols]

1 オイルフィルムダンパ 73 フランジ部(固定側部材) 81 インペラシャフト(回転軸) 83 ユニットベアリング(ベアリング) 85 オイルフィルム 97 ノズル 101 油圧 1 Oil Film Damper 73 Flange (Fixed Side Member) 81 Impeller Shaft (Rotating Shaft) 83 Unit Bearing (Bearing) 85 Oil Film 97 Nozzle 101 Hydraulic Pressure

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 回転軸を支承するベアリングと、このベ
アリングをオイルフィルムを介して支承する固定側部材
と、ベアリングに重力方向上方への油圧を与えながらオ
イルフィルムにオイルを供給するノズルとを備えたこと
を特徴とするオイルフィルムダンバ。
1. A bearing for supporting a rotating shaft, a fixed member for supporting the bearing via an oil film, and a nozzle for supplying oil to the oil film while applying hydraulic pressure upward to the bearing. An oil film damper that is characterized by that.
JP4082217A 1992-04-03 1992-04-03 Oil film damper Pending JPH05280535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4082217A JPH05280535A (en) 1992-04-03 1992-04-03 Oil film damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4082217A JPH05280535A (en) 1992-04-03 1992-04-03 Oil film damper

Publications (1)

Publication Number Publication Date
JPH05280535A true JPH05280535A (en) 1993-10-26

Family

ID=13768255

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4082217A Pending JPH05280535A (en) 1992-04-03 1992-04-03 Oil film damper

Country Status (1)

Country Link
JP (1) JPH05280535A (en)

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