JPH01109852U - - Google Patents
Info
- Publication number
- JPH01109852U JPH01109852U JP1988002016U JP201688U JPH01109852U JP H01109852 U JPH01109852 U JP H01109852U JP 1988002016 U JP1988002016 U JP 1988002016U JP 201688 U JP201688 U JP 201688U JP H01109852 U JPH01109852 U JP H01109852U
- Authority
- JP
- Japan
- Prior art keywords
- housing
- fixed
- shaft
- outer ring
- annular
- 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
- 239000011553 magnetic fluid Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/762—Sealings of ball or roller bearings by means of a fluid
- F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
- F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field
-
- 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
- F16C2370/00—Apparatus relating to physics, e.g. instruments
- F16C2370/12—Hard disk drives or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
第１図はこの考案の第１実施例の要部断面図、
第２図ａ〜ｃは第１実施例におけるシール部材の
他の態様を示す断面図、第３図および第４図は第
３実施例の要部断面図、第５図は第３実施例の要
部断面図、第６図ａ〜ｃは第３実施例におけるシ
ール部材の他の態様を示す断面図、第７図は従来
の磁気デイスク装置の断面図、第８図は第７図の
要部拡大断面図である。
１……ハウジング、２……シヤフト、３……軸
受、３ａ……内輪、３ｂ……外輪、７……導電性
磁性流体、８……デイスク。
FIG. 1 is a cross-sectional view of the main parts of the first embodiment of this invention.
Figures 2 a to c are sectional views showing other aspects of the seal member in the first embodiment, Figures 3 and 4 are sectional views of essential parts of the third embodiment, and Figure 5 is a sectional view of the third embodiment. 6a to 6c are sectional views showing other aspects of the sealing member in the third embodiment, FIG. 7 is a sectional view of a conventional magnetic disk device, and FIG. 8 is a main part of FIG. 7. FIG. DESCRIPTION OF SYMBOLS 1... Housing, 2... Shaft, 3... Bearing, 3a... Inner ring, 3b... Outer ring, 7... Conductive magnetic fluid, 8... Disk.
Claims (1)
を固定したシヤフトと、外輪を固定したハウジン
グと、環状の磁石の端面に環状のポールピースを
固着して形成し、かつポールピースと外輪または
ハウジングとの間に隙間を設けて内輪またはシヤ
フトに固定した環状のシール部材と、前記隙間に
磁石の磁力で保持した導電性磁性流体と、前記シ
ヤフトまたはハウジングに装着したデイスクとを
有する磁気デイスク装置。 An inner and outer ring that rotate relative to each other via rolling elements, a shaft to which the inner ring is fixed, a housing to which the outer ring is fixed, and an annular pole piece fixed to the end face of an annular magnet, and the pole piece and the outer ring or A magnetic disk device comprising: an annular sealing member fixed to an inner ring or shaft with a gap provided between the housing and the housing; a conductive magnetic fluid held in the gap by the magnetic force of a magnet; and a disk attached to the shaft or housing. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988002016U JPH01109852U (en) | 1988-01-13 | 1988-01-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988002016U JPH01109852U (en) | 1988-01-13 | 1988-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01109852U true JPH01109852U (en) | 1989-07-25 |
Family
ID=31202416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988002016U Pending JPH01109852U (en) | 1988-01-13 | 1988-01-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01109852U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03203067A (en) * | 1989-12-28 | 1991-09-04 | Nippon Densan Corp | Spindle motor |
| JP2016102571A (en) * | 2014-11-28 | 2016-06-02 | グローブライド株式会社 | Bearing with magnetic fluid seal and reel for fishing including the same |
| JP2017044315A (en) * | 2015-08-28 | 2017-03-02 | グローブライド株式会社 | Bearing with magnetic fluid seal |
-
1988
- 1988-01-13 JP JP1988002016U patent/JPH01109852U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03203067A (en) * | 1989-12-28 | 1991-09-04 | Nippon Densan Corp | Spindle motor |
| JP2016102571A (en) * | 2014-11-28 | 2016-06-02 | グローブライド株式会社 | Bearing with magnetic fluid seal and reel for fishing including the same |
| JP2017044315A (en) * | 2015-08-28 | 2017-03-02 | グローブライド株式会社 | Bearing with magnetic fluid seal |