JPH0294474U - - Google Patents
Info
- Publication number
- JPH0294474U JPH0294474U JP187389U JP187389U JPH0294474U JP H0294474 U JPH0294474 U JP H0294474U JP 187389 U JP187389 U JP 187389U JP 187389 U JP187389 U JP 187389U JP H0294474 U JPH0294474 U JP H0294474U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- sensing member
- detection device
- magnetic sensing
- opposing surface
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
- Brushless Motors (AREA)
Description
第１図は本考案に係るモータの回転検知装置を
説明するための平面図、第２図は第１図のマグネ
ツトならびに磁気検知部材を拡大して示す平面図
、第３図は第１図のモータの回転位置検知装置に
よつて検知される電圧の波形図、第４図ならびに
第５図は本考案の他の実施例を説明するための平
面図、第６図はコンパクトデイスクプレーヤなど
の駆動源として用いられるモータの全体構造を示
す断面図、第７図から第９図は従来のモータの回
転検知装置の拡大平面図、第１０図から第１２図
はそれぞれ第７図から第９図の検知装置によつて
検知される電圧の波形図である。
１……シヤフト、４……ロータヨーク、２０，
２１……マグネツト、Ａ……磁気検知部材、Ｅ…
…対向面、Ｆ……傾斜面。
FIG. 1 is a plan view for explaining the motor rotation detection device according to the present invention, FIG. 2 is an enlarged plan view showing the magnet and magnetic detection member shown in FIG. 1, and FIG. A waveform diagram of the voltage detected by the rotational position detection device of the motor, FIGS. 4 and 5 are plan views for explaining other embodiments of the present invention, and FIG. 6 is a diagram showing the drive of a compact disc player, etc. Figures 7 to 9 are enlarged plan views of a conventional motor rotation detection device, and Figures 10 to 12 are respectively sectional views showing the overall structure of a motor used as a motor. FIG. 3 is a waveform diagram of voltage detected by a detection device. 1...shaft, 4...rotor yoke, 20,
21... Magnet, A... Magnetic detection member, E...
...Opposite surface, F... Inclined surface.
Claims (1)
により前記マグネツトが通過する位置に磁気検知
部材が対向して配置されている回転検知装置にお
いて、前記マグネツトは、磁気検知部材に対向す
る対向面とこの対向面の縁部から磁気検知部材と
逆の方向へ傾斜して延びる傾斜面とを有しており
、前記対向面と傾斜面とに異なる磁極が着磁され
ていることを特徴とする回転検知装置。 In a rotation detection device in which a rotating body is provided with a magnet, and a magnetic sensing member is disposed opposite to a position through which the magnet passes due to rotation of the rotating body, the magnet has an opposing surface facing the magnetic sensing member and an opposite surface thereof. A rotation detection device comprising an inclined surface extending from an edge of the opposing surface in a direction opposite to that of the magnetic sensing member, and wherein the opposing surface and the inclined surface are magnetized with different magnetic poles. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP187389U JPH0736466Y2 (en) | 1989-01-10 | 1989-01-10 | Rotation detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP187389U JPH0736466Y2 (en) | 1989-01-10 | 1989-01-10 | Rotation detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0294474U true JPH0294474U (en) | 1990-07-26 |
| JPH0736466Y2 JPH0736466Y2 (en) | 1995-08-16 |
Family
ID=31202142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP187389U Expired - Lifetime JPH0736466Y2 (en) | 1989-01-10 | 1989-01-10 | Rotation detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0736466Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017053776A (en) * | 2015-09-10 | 2017-03-16 | 日立金属株式会社 | Rotation angle detection magnet, rotation angle detector and method for manufacturing rotation angle detection magnet |
-
1989
- 1989-01-10 JP JP187389U patent/JPH0736466Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017053776A (en) * | 2015-09-10 | 2017-03-16 | 日立金属株式会社 | Rotation angle detection magnet, rotation angle detector and method for manufacturing rotation angle detection magnet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0736466Y2 (en) | 1995-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |