JPH0412156U - - Google Patents
Info
- Publication number
- JPH0412156U JPH0412156U JP5170090U JP5170090U JPH0412156U JP H0412156 U JPH0412156 U JP H0412156U JP 5170090 U JP5170090 U JP 5170090U JP 5170090 U JP5170090 U JP 5170090U JP H0412156 U JPH0412156 U JP H0412156U
- Authority
- JP
- Japan
- Prior art keywords
- spindle
- turntable
- rotating shaft
- magnetic member
- annular magnetic
- 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.)
- Granted
Links
- 239000011553 magnetic fluid Substances 0.000 claims description 2
- 230000002706 hydrostatic effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000003068 static effect Effects 0.000 description 2
Landscapes
- Rotational Drive Of Disk (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Description
第１図はこの考案に係るスピンドルを示す縦断
側面図、第２図は同上の要部を示す縦断側面図、
第３図は従来例を示す側面図である。
１……スピンドル、２……回転軸、３……ハウ
ジング、５……貫通孔、６……ラジアル静圧気体
軸受、７……スラスト静圧気体軸受、１０……永
久磁石、１１ａ，１１ｂ……磁極板、１２……環
状磁性部材、１３……導電性磁性流体、１５……
ターンテーブル。
FIG. 1 is a longitudinal side view showing a spindle according to this invention, FIG. 2 is a longitudinal side view showing the main parts of the same,
FIG. 3 is a side view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Spindle, 2... Rotating shaft, 3... Housing, 5... Through hole, 6... Radial static pressure gas bearing, 7... Thrust static pressure gas bearing, 10... Permanent magnet, 11a, 11b... ... Magnetic pole plate, 12 ... Annular magnetic member, 13 ... Conductive magnetic fluid, 15 ...
Turntable.
Claims (1)
介してハウジングに支持したターンテーブル用ス
ピンドルにおいて、上記ハウジングに、回転軸の
周面に対向して環状磁性部材を取付け、その環状
磁性部材と回転軸の周面との間に導電性磁性流体
を介在させたことを特徴とするターンテーブル用
スピンドル。 In a spindle for a turntable in which a rotating shaft to which a turntable is connected is supported in a housing via a hydrostatic bearing, an annular magnetic member is attached to the housing facing the circumferential surface of the rotating shaft, and the annular magnetic member and the rotating shaft are connected to each other. A spindle for a turntable, characterized in that a conductive magnetic fluid is interposed between the spindle and the peripheral surface of the spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990051700U JPH0722763Y2 (en) | 1990-05-17 | 1990-05-17 | Spindle for turntable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990051700U JPH0722763Y2 (en) | 1990-05-17 | 1990-05-17 | Spindle for turntable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0412156U true JPH0412156U (en) | 1992-01-31 |
| JPH0722763Y2 JPH0722763Y2 (en) | 1995-05-24 |
Family
ID=31571366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990051700U Expired - Lifetime JPH0722763Y2 (en) | 1990-05-17 | 1990-05-17 | Spindle for turntable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722763Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61117759A (en) * | 1984-11-13 | 1986-06-05 | Nec Corp | Disc revolting device |
| JPS63210470A (en) * | 1987-02-21 | 1988-09-01 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic fluid seal |
-
1990
- 1990-05-17 JP JP1990051700U patent/JPH0722763Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61117759A (en) * | 1984-11-13 | 1986-06-05 | Nec Corp | Disc revolting device |
| JPS63210470A (en) * | 1987-02-21 | 1988-09-01 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic fluid seal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0722763Y2 (en) | 1995-05-24 |
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