JPH0253267U - - Google Patents
Info
- Publication number
- JPH0253267U JPH0253267U JP12901588U JP12901588U JPH0253267U JP H0253267 U JPH0253267 U JP H0253267U JP 12901588 U JP12901588 U JP 12901588U JP 12901588 U JP12901588 U JP 12901588U JP H0253267 U JPH0253267 U JP H0253267U
- Authority
- JP
- Japan
- Prior art keywords
- stator
- fixed shaft
- attached
- fixed
- spindle motor
- 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 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims 1
- 150000002910 rare earth metals Chemical class 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 238000000605 extraction Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
第１図は、この考案に係るインナーハブ形スピ
ンドルモータの一実施例を示す断面図である。
１……固定軸、２……フランジ、３……ステー
タコア、４，５……ステータコイル、６，７……
軸受、８……デイスクハブ、９……ヨーク、１０
……永久磁石、１１，１２……磁性流体シール、
１３……センサ基板、１４……リード線取り出し
穴、１５……デイスクフレーム（ケーシング）。
FIG. 1 is a cross-sectional view showing one embodiment of an inner hub type spindle motor according to this invention. 1... Fixed shaft, 2... Flange, 3... Stator core, 4, 5... Stator coil, 6, 7...
Bearing, 8...Disk hub, 9...Yoke, 10
...Permanent magnet, 11,12...Magnetic fluid seal,
13...Sensor board, 14...Lead wire extraction hole, 15...Disk frame (casing).
Claims (1)
固定軸の外周部に取付けられたステータと、磁気
デイスクを装着する円筒状のデイスクハブおよび
前記デイスクハブの内周面にヨークを介して取り
付けられた永久磁石より成るロータと、 前記固定軸の上端および下端において保持され
、それぞれ磁性流体シールを備えた軸受と、 前記ステータの下側で固定軸に固着されたセン
サ基板とから構成されたインナーハブ形スピンド
ルモータにおいて、 リング状に積層成型し、４極又は８極に着磁し
た２個ないし５個の希土類プラスチツク磁石を前
記ロータの永久磁石とし、また、１２スロツト溝
を有するスロツト形ステータであつて、スロツト
・ギヤツプとコア歯のピツチ比が１対４．６ない
し５．４であるステータ・コアを有することを特
徴とするインナーハブ形スピンドルモータ。[Claims for Utility Model Registration] A fixed shaft fixed to the center of a flange, a stator attached to the outer periphery of the fixed shaft, a cylindrical disk hub to which a magnetic disk is attached, and an inner periphery of the disk hub. a rotor consisting of a permanent magnet attached to a surface via a yoke; bearings held at the upper and lower ends of the fixed shaft and each provided with a magnetic fluid seal; and a sensor fixed to the fixed shaft below the stator. In an inner hub type spindle motor consisting of a substrate, two to five rare earth plastic magnets laminated into a ring shape and magnetized into four or eight poles are used as permanent magnets of the rotor, and 12 slots are used. An inner hub type spindle motor characterized in that the stator core is a slot type stator having grooves, and the stator core has a pitch ratio of slot gap to core teeth of 1:4.6 to 5.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12901588U JPH0253267U (en) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12901588U JPH0253267U (en) | 1988-09-30 | 1988-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0253267U true JPH0253267U (en) | 1990-04-17 |
Family
ID=31382899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12901588U Pending JPH0253267U (en) | 1988-09-30 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0253267U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62166759A (en) * | 1986-01-18 | 1987-07-23 | Nippon Densan Kk | Brushless motor |
-
1988
- 1988-09-30 JP JP12901588U patent/JPH0253267U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62166759A (en) * | 1986-01-18 | 1987-07-23 | Nippon Densan Kk | Brushless motor |
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