JPH0288461U - - Google Patents
Info
- Publication number
- JPH0288461U JPH0288461U JP16550588U JP16550588U JPH0288461U JP H0288461 U JPH0288461 U JP H0288461U JP 16550588 U JP16550588 U JP 16550588U JP 16550588 U JP16550588 U JP 16550588U JP H0288461 U JPH0288461 U JP H0288461U
- Authority
- JP
- Japan
- Prior art keywords
- drive magnet
- rotating shaft
- motor
- brushless
- fixed
- 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
- 239000012530 fluid Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000001050 lubricating effect Effects 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
Landscapes
- Brushless Motors (AREA)
Description
第１図は本考案の第１の実施例におけるデイス
ク駆動用ブラシレスモータの断面図、第２図は第
１図のＡＡ′断面の平面図、第３図は本考案の第
２の実施例におけるデイスク駆動用ブラシレスモ
ータの断面図、第４図は従来のデイスク駆動用ブ
ラシレスモータの断面図、第５図は従来の他のデ
イスク駆動用ブラシレスモータの断面図である。
１……スピンドルハブ、２……回転軸、３……
駆動マグネツト、４……モータハウジング、９，
１０……流体軸受、１６，２０……積層ステータ
、１７，２１……最下層ステータコア。
FIG. 1 is a cross-sectional view of a brushless motor for driving a disk according to a first embodiment of the present invention, FIG. 2 is a plan view of the section AA' in FIG. 1, and FIG. FIG. 4 is a cross-sectional view of a conventional brushless motor for driving a disk, and FIG. 5 is a cross-sectional view of another conventional brushless motor for driving a disk. 1... Spindle hub, 2... Rotating shaft, 3...
Drive magnet, 4...Motor housing, 9,
10... Fluid bearing, 16, 20... Laminated stator, 17, 21... Lowermost stator core.
Claims (1)
デイアが取付けられるカツプ形スピンドルハブと
、このスピンドルハブの内周に固定された駆動マ
グネツトとを有するロータ組立と、潤滑流体を介
して前記回転軸を回転可能に支持するスリーブと
スラストプレートとを保持したモータハウジング
と、前記駆動マグネツトの内周面に対向させて前
記モータハウジングに固定された積層ステータと
からなるステータ組立を備え、前記積層ステータ
のうち、最下層ステータコアの外径は前記駆動マ
グネツトの内径より大きくして前記駆動マグネツ
トの軸方向端面と若干の間隙を有して対向させた
デイスク駆動用ブラシレスモータ。 (2) 前記駆動マグネツトの軸方向端面は、主磁
界と同数極で、同位相の吸引用着磁が施されてい
る請求項１に記載のデイスク駆動用ブラシレスモ
ータ。 (3) 前記最下層ステータコアが鉄基板で構成さ
れている請求項１に記載のデイスク駆動用ブラシ
レスモータ。[Claims for Utility Model Registration] (1) A rotor assembly having a rotating shaft, a cup-shaped spindle hub fixed to the rotating shaft and to which a media is attached, and a drive magnet fixed to the inner periphery of the spindle hub. a motor housing holding a sleeve and a thrust plate that rotatably support the rotating shaft via lubricating fluid; and a laminated stator fixed to the motor housing so as to face the inner circumferential surface of the drive magnet. A brushless disc drive brushless disc is provided with a stator assembly, in which the outer diameter of the lowermost stator core of the laminated stator is larger than the inner diameter of the drive magnet and is opposed to the axial end surface of the drive magnet with a slight gap. motor. (2) The brushless motor for driving a disk according to claim 1, wherein the axial end face of the drive magnet is magnetized for attraction with the same number of poles and the same phase as the main magnetic field. (3) The brushless motor for driving a disk according to claim 1, wherein the lowermost stator core is made of an iron substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16550588U JPH0288461U (en) | 1988-12-21 | 1988-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16550588U JPH0288461U (en) | 1988-12-21 | 1988-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0288461U true JPH0288461U (en) | 1990-07-12 |
Family
ID=31452052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16550588U Pending JPH0288461U (en) | 1988-12-21 | 1988-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0288461U (en) |
-
1988
- 1988-12-21 JP JP16550588U patent/JPH0288461U/ja active Pending
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