JPH0439328U - - Google Patents
Info
- Publication number
- JPH0439328U JPH0439328U JP1990079209U JP7920990U JPH0439328U JP H0439328 U JPH0439328 U JP H0439328U JP 1990079209 U JP1990079209 U JP 1990079209U JP 7920990 U JP7920990 U JP 7920990U JP H0439328 U JPH0439328 U JP H0439328U
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- movable shaft
- operating member
- sealing device
- hydrodynamic bearing
- 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
- 238000007789 sealing Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000007664 blowing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
-
- 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
- F16C33/72—Sealings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Description
第1図はこの考案の一実施例による流体軸受の
シール装置を流体軸受の下部と共に示す停止時の
縦断面図、第2図は同作動時の部分縦断面図、第
3図はこの考案の他の実施例による流体軸受のシ
ール装置を流体軸受の下部と共に示す停止時の縦
断面図、第4図は同作動時の部分縦断面図、第5
図は第3図に示す実施例による流体軸受のシール
装置の変形例を示す作動時の部分縦断面図である
。
1……可動軸、2……軸受部材、2a……凹部
、13……シールリング、14……操作部材、1
5……シリンダ、16……ピストン、17……ば
ね、18……エア吹付口、19……シール用エア
供給路、20……油路、22……エア吹付口、2
3……エア供給路。
Fig. 1 is a vertical cross-sectional view of a hydrodynamic bearing sealing device according to an embodiment of this invention together with the lower part of the hydrodynamic bearing when it is stopped, Fig. 2 is a partial longitudinal cross-sectional view when the same is in operation, and Fig. 3 is a longitudinal sectional view of the sealing device of the hydrodynamic bearing according to an embodiment of this invention. A vertical cross-sectional view of a fluid bearing sealing device according to another embodiment together with a lower part of the fluid bearing when the fluid bearing is stopped; FIG. 4 is a partial vertical cross-sectional view when the same is in operation;
This figure is a partial vertical sectional view showing a modification of the sealing device for a hydrodynamic bearing according to the embodiment shown in FIG. 3 during operation. DESCRIPTION OF SYMBOLS 1... Movable shaft, 2... Bearing member, 2a... Recessed part, 13... Seal ring, 14... Operation member, 1
5...Cylinder, 16...Piston, 17...Spring, 18...Air blowing port, 19...Sealing air supply path, 20...Oil passage, 22...Air blowing port, 2
3...Air supply path.
補正 平2.9.14
実用新案登録請求の範囲を次のように補正する
。Amendment 2.9.14 The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
可動軸の外周面と、この可動軸が貫通する軸受
部材の端部内周面との間から軸受油が外部に漏れ
るのを防止する流体軸受のシール装置であつて、
前記軸受部材に保持させると共に、流体軸受の停
止時に前記可動軸の外周面に圧接する弾性変形可
能なシールリングと、このシールリングに圧接、
離間可能に対向し流体軸受の作動時に流体圧によ
つて軸方向に移動し前記シールリングを可動軸の
外周面と離間させる操作部材と、この操作部材と
軸受部材との間に介在させ操作部材を流体圧によ
つて移動する方向と反対方向に付勢するばねとを
、前記軸受部材の端部内周面に形成した凹部内に
設けたことを特徴とする流体軸受のシール装置。
図面の簡単な説明を次のように補正する。
明細書第20頁第1行の「……部分縦断面図」
の次に下記を挿入する。
「、第6図は従来の流体軸受のシール装置を流
体軸受の下部と共に示す縦断面図」。[Claims for Utility Model Registration] A sealing device for a hydrodynamic bearing that prevents bearing oil from leaking to the outside between the outer circumferential surface of a movable shaft and the inner circumferential surface of an end of a bearing member through which the movable shaft passes. ,
an elastically deformable seal ring held by the bearing member and pressed against the outer circumferential surface of the movable shaft when the hydrodynamic bearing is stopped;
an operating member that is separably opposed and moves in the axial direction by fluid pressure during operation of the hydrodynamic bearing to separate the seal ring from the outer peripheral surface of the movable shaft; and an operating member that is interposed between the operating member and the bearing member. 1. A sealing device for a hydrodynamic bearing, characterized in that a spring is provided in a recess formed in an inner circumferential surface of an end of the bearing member, the spring biasing the bearing member in a direction opposite to the direction in which the bearing member is moved by fluid pressure. The brief description of the drawing has been amended as follows. "...partial longitudinal sectional view" on page 20, line 1 of the specification
Insert the following after . ``, FIG. 6 is a vertical cross-sectional view showing a conventional sealing device for a hydrodynamic bearing together with the lower part of the hydrodynamic bearing.''
Claims (1)
部材の端部内周面との間から軸受油が外部に漏れ
るのを防止する流体軸受のシール装置であつて、
前記軸受部材に保持させると共に、流体軸受の停
止時に前記可動軸の外周面に圧接する弾性変形可
能なシーリングと、このシーリングに圧接、離間
可能に対向し流体軸受の作動時に流体圧によつて
軸方向に移動し前記シーリングを可動軸の外周面
と離間させる操作部材と、この操作部材と軸受部
材との間に介在させ操作部材を流体圧によつて移
動する方向と反対方向に付勢するばねとを、前記
軸受部材の端部内周面に形成した凹部内に設けた
ことを特徴とする流体軸受のシール装置。 A sealing device for a hydrodynamic bearing that prevents bearing oil from leaking to the outside between the outer circumferential surface of a movable shaft and the inner circumferential surface of an end portion of a bearing member through which the movable shaft passes,
an elastically deformable seal that is held by the bearing member and presses against the outer peripheral surface of the movable shaft when the hydrodynamic bearing is stopped; an operating member that moves in a direction to separate the sealing from the outer peripheral surface of the movable shaft, and a spring that is interposed between the operating member and the bearing member and biases the operating member in a direction opposite to the direction in which the operating member is moved by fluid pressure. A sealing device for a hydrodynamic bearing, characterized in that: is provided in a recess formed in an inner peripheral surface of an end portion of the bearing member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990079209U JPH0439328U (en) | 1990-07-27 | 1990-07-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990079209U JPH0439328U (en) | 1990-07-27 | 1990-07-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0439328U true JPH0439328U (en) | 1992-04-03 |
Family
ID=31623163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990079209U Pending JPH0439328U (en) | 1990-07-27 | 1990-07-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0439328U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005537446A (en) * | 2002-08-30 | 2005-12-08 | ハーディング インコーポレイテッド | Hydrostatic bearing for linear motion guidance |
JP2012211650A (en) * | 2011-03-31 | 2012-11-01 | Kyb Co Ltd | Shock absorber |
-
1990
- 1990-07-27 JP JP1990079209U patent/JPH0439328U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005537446A (en) * | 2002-08-30 | 2005-12-08 | ハーディング インコーポレイテッド | Hydrostatic bearing for linear motion guidance |
JP2012211650A (en) * | 2011-03-31 | 2012-11-01 | Kyb Co Ltd | Shock absorber |
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