JPS6313464U - - Google Patents
Info
- Publication number
- JPS6313464U JPS6313464U JP10630386U JP10630386U JPS6313464U JP S6313464 U JPS6313464 U JP S6313464U JP 10630386 U JP10630386 U JP 10630386U JP 10630386 U JP10630386 U JP 10630386U JP S6313464 U JPS6313464 U JP S6313464U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- facing
- magnetic sensor
- coil
- rotating body
- 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.)
- Granted
Links
- 230000005291 magnetic effect Effects 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000003302 ferromagnetic material Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
Landscapes
- Rotational Drive Of Disk (AREA)
Description
第１図は本考案の一実施例を示す要部平面図、
第２図は従来例を示す平面図である。
３……ロータヨーク（回転体）、４……ＰＧマ
グネツト、１５……磁気センサ、１６……移動子
、１７……対面部、１８……貫通部、１９……コ
イル、２０……板ばね（保持手段）。
FIG. 1 is a plan view of essential parts showing an embodiment of the present invention;
FIG. 2 is a plan view showing a conventional example. 3...Rotor yoke (rotating body), 4...PG magnet, 15...magnetic sensor, 16...mover, 17...facing part, 18...penetration part, 19...coil, 20...plate spring ( holding means).
Claims (1)
転体に隣接して磁気センサを設け、この磁気セン
サが前記回転体の１回転中に前記マグネツトと対
面することによりこのマグネツトの位置をインデ
ツクス信号として検出可能なインデツクス信号検
出装置において、前記磁気センサが、筒状のコイ
ルと、このコイルの中空部を貫通する貫通部なら
びに前記マグネツトに対面可能な対面部を有する
強磁性体からなる移動子とを備え、かつ前記コイ
ルに、前記対面部近傍における前記回転体の外周
の接線方向と略平行な方向の移動を許容した状態
で前記移動子を保持する保持手段を設けたことを
特徴とするインデツクス信号検出装置。 A magnetic sensor is provided adjacent to a rotating body on which a magnet is mounted at a predetermined position on the outer periphery, and this magnetic sensor detects the position of the magnet as an index signal by facing the magnet during one revolution of the rotating body. In a possible index signal detection device, the magnetic sensor includes a cylindrical coil, a moving element made of a ferromagnetic material and having a penetration portion penetrating a hollow portion of the coil and a facing portion capable of facing the magnet. , and the coil is provided with a holding means for holding the mover in a state that allows movement in a direction substantially parallel to the tangential direction of the outer circumference of the rotary body in the vicinity of the facing portion. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986106303U JPH0437338Y2 (en) | 1986-07-12 | 1986-07-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986106303U JPH0437338Y2 (en) | 1986-07-12 | 1986-07-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6313464U true JPS6313464U (en) | 1988-01-28 |
| JPH0437338Y2 JPH0437338Y2 (en) | 1992-09-02 |
Family
ID=30981535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986106303U Expired JPH0437338Y2 (en) | 1986-07-12 | 1986-07-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0437338Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60162464A (en) * | 1984-02-02 | 1985-08-24 | Canon Electronics Inc | Index signal detecting mechanism of brushless motor |
| JPS6182374A (en) * | 1984-09-28 | 1986-04-25 | Copal Denshi Kk | Index pulse generator of floppy disk |
-
1986
- 1986-07-12 JP JP1986106303U patent/JPH0437338Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60162464A (en) * | 1984-02-02 | 1985-08-24 | Canon Electronics Inc | Index signal detecting mechanism of brushless motor |
| JPS6182374A (en) * | 1984-09-28 | 1986-04-25 | Copal Denshi Kk | Index pulse generator of floppy disk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0437338Y2 (en) | 1992-09-02 |