JPH0642097Y2 - Foil journal bearing - Google Patents
Foil journal bearingInfo
- Publication number
- JPH0642097Y2 JPH0642097Y2 JP1988108222U JP10822288U JPH0642097Y2 JP H0642097 Y2 JPH0642097 Y2 JP H0642097Y2 JP 1988108222 U JP1988108222 U JP 1988108222U JP 10822288 U JP10822288 U JP 10822288U JP H0642097 Y2 JPH0642097 Y2 JP H0642097Y2
- Authority
- JP
- Japan
- Prior art keywords
- foil
- bearing
- journal bearing
- housing
- elastic pad
- 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 - Lifetime
Links
Description
【考案の詳細な説明】 「産業上の利用分野」 本考案は膨張タービン等小型高速回転体に使用されるフ
ォイルジャーナル軸受の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to an improvement of a foil journal bearing used for a small high-speed rotating body such as an expansion turbine.
「従来の技術」 第３図に従来のフォイルジャーナル軸受を示す。"Prior Art" Fig. 3 shows a conventional foil journal bearing.
01は軸、02はトップフォイル、03はバンプフォイル、04
はハウジングである。01 is axis, 02 is top foil, 03 is bump foil, 04
Is the housing.
軸01は軸受面であるトップフォイル02上で回転する。ト
ップフォイル02とハウジング04との間にバンプフォイル
03が設置され、トップフォイル02に適度な半径方向剛性
を与えている。The shaft 01 rotates on a top foil 02 which is a bearing surface. Bump foil between top foil 02 and housing 04
03 is installed to give the top foil 02 an appropriate radial rigidity.
「考案が解決しようとする問題点」 本考案は従来のフォイルジャーナル軸受の減衰能を更に
向上させることを狙ったものであり、振動上従来のフォ
イルジャーナル軸受で困難であった作動状態を実現する
べく考案したものである。"Problems to be solved by the invention" The present invention aims to further improve the damping capacity of the conventional foil journal bearing, and realizes an operating state which is difficult for the conventional foil journal bearing due to vibration. It was devised accordingly.
「問題点を解決するための手段」 従来のフォイル軸受の軸受特性がその可撓性による軸受
面変形に伴なう潤滑膜特性の向上に依っているのに対
し、フオイルの背面と軸受ハウジングの空隙に弾性のパ
ッドを挿入し、かつ、この空隙を液体封入部としたこと
によって、フォイル軸受そのものの性能に積極的な減衰
作用をつけ加えることを狙ったものである。"Means for solving the problems" While the bearing characteristics of conventional foil bearings depend on the improvement of the lubricating film characteristics accompanying the deformation of the bearing surface due to their flexibility, By inserting an elastic pad into the void and using this void as a liquid-filled portion, it is intended to add a positive damping action to the performance of the foil bearing itself.
「実施例」 本考案の一実施例を第１図に示す。"Embodiment" An embodiment of the present invention is shown in FIG.
１は軸、２はフォイル、３はハウジング、４は給油孔、
５（５−1,5−2,5−3,5−４）は弾性体パッド、６（６
−1,6−２）はリング、７（７−1,7−２）はＯリング、
８はフォイル２とハウジング３との空間である。1 is a shaft, 2 is a foil, 3 is a housing, 4 is an oil supply hole,
5 (5-1, 5-2, 5-3, 5-4) is an elastic pad, 6 (6
-1,6-2) is a ring, 7 (7-1,7-2) is an O-ring,
8 is a space between the foil 2 and the housing 3.
フォイル２の軸方向両端は溶接等の手段により、リング
６−1,6−２に接着し、リング６−1,6−２をＯリング７
−1,7−２を介してハウジング３に固定する。Both ends of the foil 2 in the axial direction are adhered to the rings 6-1 and 6-2 by means such as welding, and the rings 6-1 and 6-2 are attached to the O-ring 7.
It is fixed to the housing 3 via -1, 7-2.
軸１とフォイル２によって軸受隙間が形成されている。
フォイル２とハウジング３の空間８には給油孔４より油
等を満たすが、フォイル軸受としての半径方向剛性、形
状維持性から弾性体パッド５−１ないし５−４を介在さ
せる。弾性体パッド５−１ないし５−４の剛性，数，フ
ォイル２およびハウジング３との空間8,フォイル２の厚
さ，油の種類を組み合わせることで様々な要求に応じた
軸受特性を実現できる。A bearing gap is formed by the shaft 1 and the foil 2.
The space 2 between the foil 2 and the housing 3 is filled with oil or the like through the oil supply hole 4, but elastic pads 5-1 to 5-4 are interposed in terms of radial rigidity and shape maintainability as a foil bearing. By combining the rigidity and number of the elastic pads 5-1 to 5-4, the space 8 between the foil 2 and the housing 3, the thickness of the foil 2, and the type of oil, it is possible to realize bearing characteristics that meet various requirements.
「考案の効果」 本考案は前記構成であり、フォイル背面に油等を介在さ
せることにより、フォイルの可撓性による良好な軸受性
能に加えて、弾性パッドを入れたので、フオイルと弾性
体パッドおよび弾性体パッドと軸受ハウジングの空隙を
小さくすることで、軸沈みを小さくでき、芯保持性が確
保できる。[Advantages of the Invention] The present invention has the above-described configuration. By interposing oil or the like on the back surface of the foil, in addition to the good bearing performance due to the flexibility of the foil, an elastic pad is inserted, so that the oil and the elastic pad are provided. Also, by reducing the gap between the elastic pad and the bearing housing, it is possible to reduce the shaft sinking and ensure the core retainability.
また、液体封入部に適当な質量の弾性体パッドが存在す
ることにより、軸の振動に対してずれた位相でこの弾性
体パッドが振動し、大きな振動エネルギを吸収させるこ
とができ、特に危険速度通過など特定の周波数の振動に
対して著るしい振動低減効果（ダイナミックダンパ効
果）が発揮できる。In addition, the presence of an elastic pad with an appropriate mass in the liquid sealing part causes the elastic pad to vibrate in a phase shifted with respect to the vibration of the shaft and can absorb large vibration energy. A remarkable vibration reduction effect (dynamic damper effect) can be exhibited against vibration of a specific frequency such as passage.
第１図および第２図は本考案の一実施例で、第１図は第
２図のＡ−Ａ断面図、第２図は第１図のＢ−Ｂ断面図、
第３図は従来のフォイルジャーナル軸受の断面図であ
る。 1:軸、2:フォイル 3:ハウジング、4:給油孔 ５（５−1,5−2,5−3,5−４）：弾性体パッド ６（６−1,6−２）：リング ７（７−1,7−２）:Oリング 8:空間1 and 2 show an embodiment of the present invention. FIG. 1 is a sectional view taken along the line AA of FIG. 2, and FIG. 2 is a sectional view taken along the line BB of FIG.
FIG. 3 is a sectional view of a conventional foil journal bearing. 1: Shaft, 2: Foil 3: Housing, 4: Oiling hole 5 (5-1, 5-2, 5-3, 5-4): Elastic pad 6 (6-1, 6-2): Ring 7 (7-1, 7-2): O-ring 8: Space
Claims (1)
するフオイルジヤーナル軸受において、フオイルの背面
と軸受ハウジングの空隙に弾性のパッドを挿入し、か
つ、この空隙を液体封入部としたことを特徴とするフオ
イルジヤーナル軸受。1. In a Foyle journal bearing in which a bearing surface is formed of a metal (foil) foil, an elastic pad is inserted into a gap between the back surface of the foil and the bearing housing, and the gap is used as a liquid sealing portion. Characteristic Foyle journal bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988108222U JPH0642097Y2 (en) | 1988-08-19 | 1988-08-19 | Foil journal bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988108222U JPH0642097Y2 (en) | 1988-08-19 | 1988-08-19 | Foil journal bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0230521U JPH0230521U (en) | 1990-02-27 |
| JPH0642097Y2 true JPH0642097Y2 (en) | 1994-11-02 |
Family
ID=31343348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988108222U Expired - Lifetime JPH0642097Y2 (en) | 1988-08-19 | 1988-08-19 | Foil journal bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0642097Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62155223U (en) * | 1986-03-26 | 1987-10-02 | ||
| JPH0137215Y2 (en) * | 1986-05-22 | 1989-11-10 |
-
1988
- 1988-08-19 JP JP1988108222U patent/JPH0642097Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0230521U (en) | 1990-02-27 |
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