JPH0376171U - - Google Patents
Info
- Publication number
- JPH0376171U JPH0376171U JP13841989U JP13841989U JPH0376171U JP H0376171 U JPH0376171 U JP H0376171U JP 13841989 U JP13841989 U JP 13841989U JP 13841989 U JP13841989 U JP 13841989U JP H0376171 U JPH0376171 U JP H0376171U
- Authority
- JP
- Japan
- Prior art keywords
- pattern
- magnetized
- index
- permanent magnet
- annular shape
- 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
- 239000000758 substrate Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Windings For Motors And Generators (AREA)
Description
第１図は本考案の速度検出装置の基板の一実施
例の構成を示す平面図、第２図は本考案の速度検
出装置の永久磁石の一実施例の構成を示す平面図
、第３図乃至第６図は本考案の永久磁石とコイル
の位相を説明する展開図、第７図及び第８図は本
考案の速度検出装置の永久磁石の他の実施例の構
成を示す平面図、第９図は本考案の速度検出装置
のコイルと永久磁石のさらに他の実施例の構成を
示す平面図、第１０図は従来の速度検出装置の基
板の一例の構成を示す平面図、第１１図は従来の
速度検出装置の永久磁石の一例の構成を示す平面
図、第１２図及び第１３図は従来の永久磁石とコ
イルの位相を説明する展開図、第１４図は従来の
ＦＧパターンとインデツクスパターンの出力波形
を説明する図である。
１……基板、２……ＦＧパターン、２ａ……傾
斜部、３，２１……切欠き部、４……インデツク
スパターン、５……コイル、１０……永久磁石、
１１……ＦＧ着磁部、１２……インデツクス着磁
部、３１……未着磁部、４１……着磁部。
FIG. 1 is a plan view showing the structure of an embodiment of the board of the speed detecting device of the present invention, FIG. 2 is a plan view showing the structure of an embodiment of the permanent magnet of the speed detecting device of the present invention, and FIG. FIGS. 6 to 6 are developed diagrams illustrating the phases of the permanent magnet and coil of the present invention, FIGS. 7 and 8 are plan views showing the configuration of other embodiments of the permanent magnet of the speed detecting device of the present invention, and FIG. FIG. 9 is a plan view showing the structure of still another embodiment of the coil and permanent magnet of the speed detecting device of the present invention, FIG. 10 is a plan view showing the structure of an example of the board of the conventional speed detecting device, and FIG. 11 12 and 13 are developed diagrams illustrating the phase of the conventional permanent magnet and coil, and FIG. 14 is a diagram showing the conventional FG pattern and index. FIG. 3 is a diagram illustrating an output waveform of a tux pattern. DESCRIPTION OF SYMBOLS 1... Board, 2... FG pattern, 2a... Inclined part, 3, 21... Notch part, 4... Index pattern, 5... Coil, 10... Permanent magnet,
11...FG magnetized part, 12... Index magnetized part, 31... Unmagnetized part, 41... Magnetized part.
Claims (1)
コイルが略環状に形成された基板と、ＦＧ着磁部
とインデツクス着磁部とが略環状に形成されると
ともに、前記基板に対抗して回転自在に配置され
た永久磁石とにより構成される速度検出装置であ
つて、 前記ＦＧパターンは角度θ（但しθ＜π，２π
／θは自然数）のｎ（ｎは自然数）個の切欠き部
を有し、前記インデツクスパターンは前記切欠き
部の１つに配置され、 前記永久磁石には、多数のＮ極とＳ極が交互に
形成された前記ＦＧ着磁部と、実質的に着磁が施
されていない未着磁部とが、θ／（２ｍ）（ｍは
自然数）の間隔で交互に形成されるとともに、前
記未着磁部の１個所に前記インデツクス着磁部が
形成されている速度検出装置。[Claims for Utility Model Registration] A substrate on which a coil consisting of an FG pattern and an index pattern is formed in a substantially annular shape, an FG magnetized part and an index magnetized part are formed in a substantially annular shape, and a coil made of an FG pattern and an index pattern is formed in a substantially annular shape, and and a permanent magnet rotatably arranged, the FG pattern has an angle θ (however, θ<π, 2π
/θ is a natural number), the index pattern is arranged in one of the notches, and the permanent magnet has a large number of N poles and S poles. The FG magnetized portions in which are alternately formed and unmagnetized portions that are not substantially magnetized are alternately formed at an interval of θ/(2m) (m is a natural number), A speed detection device in which the index magnetized portion is formed at one location of the non-magnetized portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13841989U JPH0376171U (en) | 1989-11-28 | 1989-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13841989U JPH0376171U (en) | 1989-11-28 | 1989-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0376171U true JPH0376171U (en) | 1991-07-30 |
Family
ID=31685519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13841989U Pending JPH0376171U (en) | 1989-11-28 | 1989-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0376171U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008023855A (en) * | 2006-07-21 | 2008-02-07 | Nakata Coating Co Ltd | Method of manufacturing levee block |
-
1989
- 1989-11-28 JP JP13841989U patent/JPH0376171U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008023855A (en) * | 2006-07-21 | 2008-02-07 | Nakata Coating Co Ltd | Method of manufacturing levee block |
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