JPH0171301U - - Google Patents
Info
- Publication number
- JPH0171301U JPH0171301U JP1987165677U JP16567787U JPH0171301U JP H0171301 U JPH0171301 U JP H0171301U JP 1987165677 U JP1987165677 U JP 1987165677U JP 16567787 U JP16567787 U JP 16567787U JP H0171301 U JPH0171301 U JP H0171301U
- Authority
- JP
- Japan
- Prior art keywords
- index
- rotor
- detection
- magnet
- outputs
- 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
- 238000001514 detection method Methods 0.000 claims description 7
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
- Rotational Drive Of Disk (AREA)
Description
第１図は本考案の実施例に係わる構成を示す部
分的平面図、第２図は同実施例において一部断面
部を含む側面図である。
１１……スピンドルモータ、１３……ロータ、
１５……ロータ・マグネツト、１６……プリント
回路基板、１７……集積回路、１８……検出用コ
イル、１９……検出用マグネツト。
FIG. 1 is a partial plan view showing the configuration of an embodiment of the present invention, and FIG. 2 is a side view including a partial cross section of the embodiment. 11... spindle motor, 13... rotor,
15...Rotor magnet, 16...Printed circuit board, 17...Integrated circuit, 18...Detection coil, 19...Detection magnet.
Claims (1)
るためのインデツクスパルスを出力するフロツピ
ーデイスク装置のインデツクス検出装置において
、 前記記録媒体を回転駆動させるブラシレスモー
タにおいてロータ・マグネツトがロータの円周方
向に配置されて前記ロータ・マグネツトの一部が
インデツクス検出用マグネツトとして構成された
スピンドルモータと、前記ロータの近傍に配置さ
れて前記インデツクス検出用マグネツトの磁界を
検出してその磁界に応じた電流を発生する検出用
コイル及び前記検出用コイルによる電流に基づい
てインデツクスパルスを出力する出力回路を備え
たプリント回路基板とを具備したことを特徴とす
るフロツピーデイスク装置のインデツクス検出装
置。[Claims for Utility Model Registration] An index detecting device for a floppy disk device that outputs an index pulse for determining a track reference position of a rotating recording medium, comprising a rotor magnet in a brushless motor that rotationally drives the recording medium. A spindle motor is arranged in the circumferential direction of the rotor and a part of the rotor magnet is configured as an index detection magnet, and a spindle motor is arranged near the rotor to detect the magnetic field of the index detection magnet. An index for a floppy disk device, comprising: a detection coil that generates a current according to a magnetic field; and a printed circuit board that includes an output circuit that outputs an index pulse based on the current generated by the detection coil. Detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987165677U JPH0171301U (en) | 1987-10-29 | 1987-10-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987165677U JPH0171301U (en) | 1987-10-29 | 1987-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0171301U true JPH0171301U (en) | 1989-05-12 |
Family
ID=31452381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987165677U Pending JPH0171301U (en) | 1987-10-29 | 1987-10-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0171301U (en) |
-
1987
- 1987-10-29 JP JP1987165677U patent/JPH0171301U/ja active Pending
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