JPH0454477U - - Google Patents
Info
- Publication number
- JPH0454477U JPH0454477U JP9474990U JP9474990U JPH0454477U JP H0454477 U JPH0454477 U JP H0454477U JP 9474990 U JP9474990 U JP 9474990U JP 9474990 U JP9474990 U JP 9474990U JP H0454477 U JPH0454477 U JP H0454477U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- collar
- openings
- rotation information
- yoke
- 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 1
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Rotational Drive Of Disk (AREA)
- Brushless Motors (AREA)
Description
第１図ないし第３図は、本考案の一実施例を説
明するためのもので、第１図は要部拡大説明図、
第２図は全体構成の平面図、第３図は断面図、第
４図は従来のデイスク駆動装置におけるモータの
要部分解斜視図である。
２６……ロータヨーク、２７……つば、２８…
…開口、３０……マグネツト、３２……基台、３
３……ホール素子、３５……開口。
Figures 1 to 3 are for explaining one embodiment of the present invention, and Figure 1 is an enlarged explanatory view of the main parts;
FIG. 2 is a plan view of the overall configuration, FIG. 3 is a sectional view, and FIG. 4 is an exploded perspective view of essential parts of a motor in a conventional disk drive device. 26...Rotor yoke, 27...Brim, 28...
...Opening, 30...Magnet, 32...Base, 3
3...Hall element, 35...Aperture.
Claims (1)
周縁部につば部を設け、このつば部を挾んで前記
モータの固定部にマグネツトと検出器とを対向し
て配設し、前記つば部の全周にわたつて、所定の
間隔で前記回転ヨークの周方向に一定幅の開口を
形成したことを特徴とするモータの回転情報検出
装置。 (2) 請求項(1)に記載のモータの回転情報検出装
置において、前記複数の開口のうち、１ケ所の開
口の形状を異ならせたことを特徴とするモータの
回転情報検出装置。[Claims for Utility Model Registration] (1) A collar is provided on the peripheral edge of a rotating yoke fixed to the rotating shaft of a motor, and a magnet and a detector are opposed to the fixed part of the motor by sandwiching the collar. 1. A rotation information detecting device for a motor, characterized in that openings having a constant width are formed in the circumferential direction of the rotary yoke at predetermined intervals over the entire circumference of the flange. (2) The motor rotation information detection device according to claim (1), wherein one of the plurality of openings has a different shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9474990U JPH0454477U (en) | 1990-09-11 | 1990-09-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9474990U JPH0454477U (en) | 1990-09-11 | 1990-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454477U true JPH0454477U (en) | 1992-05-11 |
Family
ID=31832944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9474990U Pending JPH0454477U (en) | 1990-09-11 | 1990-09-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454477U (en) |
-
1990
- 1990-09-11 JP JP9474990U patent/JPH0454477U/ja active Pending