JPH0389515U - - Google Patents
Info
- Publication number
- JPH0389515U JPH0389515U JP15025389U JP15025389U JPH0389515U JP H0389515 U JPH0389515 U JP H0389515U JP 15025389 U JP15025389 U JP 15025389U JP 15025389 U JP15025389 U JP 15025389U JP H0389515 U JPH0389515 U JP H0389515U
- Authority
- JP
- Japan
- Prior art keywords
- drum
- bearing
- spiral groove
- oil
- upper drum
- 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
Description
第１図は本考案の一実施例の断面図、第２図と
第３図は軸承部の平面図と断面図、第４図は軸承
孔の偏心を拡大して示す断面図、第５図は第４図
の−線断面図、第６図はモータ部の平面図、
第７図は従来の装置の断面図である。
１……回転軸、２……モータ、３……磁気ヘツ
ド、４……上ドラム、５……下ドラム、６……ボ
ール軸承、７……軸承ホルダ、１４……ロータリ
トランスのステータ、１５……下端面、２１……
軸承、２１ａ……軸承孔、２２……螺旋溝、２３
……軸承、２３ａ……内径、ｅ……偏心量。
Fig. 1 is a cross-sectional view of one embodiment of the present invention, Figs. 2 and 3 are a plan view and a cross-sectional view of the bearing part, Fig. 4 is a cross-sectional view showing an enlarged eccentricity of the bearing hole, and Fig. 5. is a sectional view taken along the - line in Fig. 4, Fig. 6 is a plan view of the motor section,
FIG. 7 is a sectional view of a conventional device. DESCRIPTION OF SYMBOLS 1... Rotating shaft, 2... Motor, 3... Magnetic head, 4... Upper drum, 5... Lower drum, 6... Ball bearing, 7... Bearing holder, 14... Stator of rotary transformer, 15 ...Lower end surface, 21...
Bearing, 21a... Bearing hole, 22... Spiral groove, 23
...Bearing, 23a...Inner diameter, e...Eccentricity.
Claims (1)
巻付けられて回転する上ドラムと、前記磁気テー
プが一面に巻付けられてこれを案内する下ドラム
とを備え、下ドラムに固着された軸承ホルダには
、上ドラムの回転軸を軸承し、下部に螺旋溝を形
成した含油したラジアル方向の軸承、上ドラムの
下端面に接する渦巻溝を形成した含油したスラス
ト方向の軸承とを設けたことを特徴とする磁気ヘ
ツドドラムの軸承装置。 A rotating upper drum to which a magnetic head is attached and a magnetic tape wrapped around one side, and a lower drum that guides the magnetic tape wrapped around one side, and a bearing holder fixed to the lower drum. is characterized by having an oil-impregnated radial bearing that supports the rotating shaft of the upper drum and has a spiral groove formed at the lower part, and an oil-impregnated thrust bearing that has a spiral groove formed in contact with the lower end surface of the upper drum. A bearing device for a magnetic head drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15025389U JPH0389515U (en) | 1989-12-28 | 1989-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15025389U JPH0389515U (en) | 1989-12-28 | 1989-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0389515U true JPH0389515U (en) | 1991-09-12 |
Family
ID=31696611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15025389U Pending JPH0389515U (en) | 1989-12-28 | 1989-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0389515U (en) |
-
1989
- 1989-12-28 JP JP15025389U patent/JPH0389515U/ja active Pending