JPH033171U - - Google Patents
Info
- Publication number
- JPH033171U JPH033171U JP6271089U JP6271089U JPH033171U JP H033171 U JPH033171 U JP H033171U JP 6271089 U JP6271089 U JP 6271089U JP 6271089 U JP6271089 U JP 6271089U JP H033171 U JPH033171 U JP H033171U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- hub
- center
- bearing support
- seal
- 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 6
- 239000012530 fluid Substances 0.000 claims 1
- 239000000314 lubricant Substances 0.000 claims 1
- 239000010687 lubricating oil Substances 0.000 claims 1
Landscapes
- Brushless Motors (AREA)
Description
第１図は本考案の第１実施例を示す縦断面図、
第２図は本考案の第２実施例を示す縦断面図、第
３図は従来例を示す縦断面図である。
２１……ハウジング、２３……軸受支持部、２
５……回転軸、２６……軸受用スリーブ、２７…
…ヘリンボーン溝、３０……磁性流体シール、３
４……磁性流体、３５……ハブ、３６……通路。
FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention;
FIG. 2 is a longitudinal sectional view showing a second embodiment of the present invention, and FIG. 3 is a longitudinal sectional view showing a conventional example. 21...Housing, 23...Bearing support part, 2
5... Rotating shaft, 26... Bearing sleeve, 27...
...Herringbone groove, 30...Magnetic fluid seal, 3
4...Magnetic fluid, 35...Hub, 36...Passway.
Claims (1)
滑剤を使用する動圧軸受構造を介してハウジング
の軸受支持部に回転自在に支持するとともに、上
記軸受支持部の先端開口部に上記潤滑剤の漏れ止
めをなす磁性流体シールを取付け、かつ、上記軸
受支持部を上記ハブで覆い隠したブラシレスモー
タにおいて、上記ハブの中央部またはこの中央部
への上記回転軸の連結端部に、上記磁性流体シー
ルのシール部に対応させて磁性流体注入用の通路
を設けたことを特徴とするブラシレスモータ。 A rotating shaft integrated in the center of the hub is rotatably supported by a bearing support part of the housing via a hydrodynamic bearing structure that uses liquid lubricant, and the opening at the tip of the bearing support part is provided with the above-mentioned lubricant. In a brushless motor in which a magnetic fluid seal is installed to prevent fluid from leaking, and the bearing support portion is covered with the hub, the above-mentioned magnetic fluid seal is installed at the center of the hub or at the connecting end of the rotating shaft to the center. A brushless motor characterized in that a passage for injecting magnetic fluid is provided corresponding to a seal portion of a magnetic fluid seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6271089U JPH033171U (en) | 1989-05-30 | 1989-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6271089U JPH033171U (en) | 1989-05-30 | 1989-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH033171U true JPH033171U (en) | 1991-01-14 |
Family
ID=31592107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6271089U Pending JPH033171U (en) | 1989-05-30 | 1989-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH033171U (en) |
-
1989
- 1989-05-30 JP JP6271089U patent/JPH033171U/ja active Pending