JPS62140877U - - Google Patents
Info
- Publication number
- JPS62140877U JPS62140877U JP2525186U JP2525186U JPS62140877U JP S62140877 U JPS62140877 U JP S62140877U JP 2525186 U JP2525186 U JP 2525186U JP 2525186 U JP2525186 U JP 2525186U JP S62140877 U JPS62140877 U JP S62140877U
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- drive motor
- disk drive
- rigid disk
- rotor magnet
- 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
- 230000002093 peripheral effect Effects 0.000 claims 2
Description
第1図は本考案が適用されるリジツトデイスク
ドライブモータの断面図、第2図は本考案の一実
施例の断面図、第3図および第4図は本考案の別
の実施例の各例を示す断面図、第5図は従来例の
回転子の断面図である。
1……回転軸、2……スピンドル、3……フロ
ツピーデイスク、6……固定子、10……回転子
、11……回転子ヨーク、12……回転子マグネ
ツト、13……円弧状凹溝、14a,14b,1
4c……小孔、15……円弧状凹溝。
FIG. 1 is a sectional view of a rigid disk drive motor to which the present invention is applied, FIG. 2 is a sectional view of one embodiment of the present invention, and FIGS. 3 and 4 are sectional views of other embodiments of the present invention. FIG. 5 is a cross-sectional view of a conventional rotor. 1... Rotating shaft, 2... Spindle, 3... Floppy disk, 6... Stator, 10... Rotor, 11... Rotor yoke, 12... Rotor magnet, 13... Arc-shaped concave Groove, 14a, 14b, 1
4c...small hole, 15...circular groove.
Claims (1)
回転させる回転軸と、 固定子の周りを回転するように前記回転軸に取
り付けられた回転子コアと、 前記固定子と一定のギヤツプを有して前記回転
子コアの内面に固着された回転子マグネツトとを
備えてなり、 前記回転子マグネツトが前記回転子コアの内面
の全面を覆うリング状に形成されると共に、円周
方向の厚みを漸次変化させる肉薄部分が定間隔で
形成されていることを特徴とするリジツドデイス
クドライブモータの回転子。 2 前記薄肉部分が前記回転子マグネツトの外周
面に形成された複数の円弧状凹溝である実用新案
登録請求の範囲第1項記載のリジツドデイスクド
ライブモータの回転子。 3 前記肉薄部分が径が異なるように前記回転子
マグネツト内に形成された複数の小孔である実用
新案登録請求の第1項記載のリジツトデイスクド
ライブモータの回転子。 4 前記薄肉部分が前記回転子マグネツトの内周
面に形成された複数の円弧状凹溝である実用新案
登録請求の範囲第1項記載のリジツトデイスクド
ライブモータの回転子。[Claims for Utility Model Registration] 1. A rotating shaft for rotating a spindle that supports a floppy disk, a rotor core attached to the rotating shaft so as to rotate around a stator, and a fixed portion connected to the stator. a rotor magnet fixed to the inner surface of the rotor core with a gap, the rotor magnet is formed in a ring shape covering the entire inner surface of the rotor core, and A rotor for a rigid disk drive motor, characterized in that thin portions are formed at regular intervals so that the thickness of the rotor gradually changes. 2. The rotor of a rigid disk drive motor according to claim 1, wherein the thin portion is a plurality of arcuate grooves formed on the outer peripheral surface of the rotor magnet. 3. The rotor of a rigid disk drive motor according to claim 1, wherein the thin portions are a plurality of small holes formed in the rotor magnet so as to have different diameters. 4. The rotor of a rigid disk drive motor according to claim 1, wherein the thin portion is a plurality of arcuate grooves formed on the inner peripheral surface of the rotor magnet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2525186U JPS62140877U (en) | 1986-02-24 | 1986-02-24 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2525186U JPS62140877U (en) | 1986-02-24 | 1986-02-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62140877U true JPS62140877U (en) | 1987-09-05 |
Family
ID=30825226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2525186U Pending JPS62140877U (en) | 1986-02-24 | 1986-02-24 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62140877U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005008862A1 (en) * | 2003-07-22 | 2005-01-27 | Aichi Steel Corporation Ltd. | Thin hybrid magnetization type ring magnet, yoke-equipped thin hybrid magnetization type ring magnet, and brush-less motor |
-
1986
- 1986-02-24 JP JP2525186U patent/JPS62140877U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005008862A1 (en) * | 2003-07-22 | 2005-01-27 | Aichi Steel Corporation Ltd. | Thin hybrid magnetization type ring magnet, yoke-equipped thin hybrid magnetization type ring magnet, and brush-less motor |
CN100380779C (en) * | 2003-07-22 | 2008-04-09 | 爱知制钢株式会社 | Thin hybrid magnetization type ring magnet,yoke-equipped thin hybrid magnetization type ring magnet,and brush-less motor |