JPH01159577U - - Google Patents
Info
- Publication number
- JPH01159577U JPH01159577U JP5339688U JP5339688U JPH01159577U JP H01159577 U JPH01159577 U JP H01159577U JP 5339688 U JP5339688 U JP 5339688U JP 5339688 U JP5339688 U JP 5339688U JP H01159577 U JPH01159577 U JP H01159577U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- pulse signal
- brushless motor
- annular
- output coil
- 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
Landscapes
- Brushless Motors (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
第１図は本考案に係るブラシレスモータのパル
ス信号発生装置の一実施例を示す要部断面図、第
２図は本考案を用いたブラシレスモータを示す半
断面図、第３図および第４図は第１図のパルス信
号マグネツトを示す斜視図および平面図、第５図
は従来のパルス信号発生装置の概略を示す断面図
、第６図および第７図は第５図のパルス信号用マ
グネツトを示す斜視図および平面図、第８図は第
５図のパルス信号出力コイルから出力されるパル
ス信号の出力波形図である。
１，３１…ロータヨーク、３，３５…主マグネ
ツト、５，３９…パルス信号用マグネツト、７，
４７…ボビン、９，４５…パルス信号出力コイル
、１１…軸受ケーシング、１７…スペーサ、１９
…回路基板、２１…突極歯、２３…磁心、２５…
駆動コイル、２７…ステータ、２９…ロータシヤ
フト、３７…ロータ、４１…第１のマグネツト、
４３…第２のマグネツト、５１…コイル部。
FIG. 1 is a cross-sectional view of essential parts showing an embodiment of a pulse signal generator for a brushless motor according to the present invention, FIG. 2 is a half-sectional view showing a brushless motor using the present invention, and FIGS. 3 and 4 1 is a perspective view and a plan view showing the pulse signal magnet shown in FIG. 1, FIG. 5 is a sectional view schematically showing a conventional pulse signal generator, and FIGS. The perspective view and plan view shown in FIG. 8 are output waveform diagrams of the pulse signal output from the pulse signal output coil of FIG. 5. 1, 31... Rotor yoke, 3, 35... Main magnet, 5, 39... Pulse signal magnet, 7,
47... Bobbin, 9, 45... Pulse signal output coil, 11... Bearing casing, 17... Spacer, 19
...Circuit board, 21...Salient pole tooth, 23...Magnetic core, 25...
Drive coil, 27... Stator, 29... Rotor shaft, 37... Rotor, 41... First magnet,
43...Second magnet, 51...Coil part.
Claims (1)
クに配置され、回転方向にＮ極とＳ極に交互に着
磁された環状のパルス信号用マグネツトと、 先端を前記パルス信号用マグネツトに向けて前
記ステータ側に固定されたボビンに導線を巻いて
形成され、前記パルス信号用マグネツトの磁極の
変化部を検出してパルス信号を出力するパルス信
号出力コイルと、 を具備してなるブラシレスモータのパルス信号
発生装置において、 前記パルス信号用マグネツトが、環状の第１の
マグネツトと、この第１のマグネツトの内側もし
くは外側に同心円状に形成されかつ前記第１のマ
グネツトとは逆の順序でＮ極とＳ極に着磁された
環状の第２のマグネツトとからなり、 前記パルス信号出力コイルが、一方の先端を前
記第１のマグネツトに、他方の先端を前記第２の
マグネツトに向けて配置されたコ字状のボビンに
前記導線が巻かれてなることを特徴とするブラシ
レスモータのパルス信号発生装置。[Claims for Utility Model Registration] An annular pulse signal magnet disposed on a rotor yoke rotatably supported on the stator side and alternately magnetized to north and south poles in the direction of rotation; A pulse signal output coil is formed by winding a conductive wire around a bobbin fixed to the stator side facing the signal magnet, and detects a changing part of the magnetic pole of the pulse signal magnet and outputs a pulse signal. In the pulse signal generator for a brushless motor, the pulse signal magnet is formed concentrically with an annular first magnet and on the inside or outside of the first magnet, and the pulse signal magnet is formed on the opposite side of the first magnet. and a ring-shaped second magnet magnetized to N and S poles in this order, and the pulse signal output coil has one tip connected to the first magnet and the other tip connected to the second magnet. 1. A pulse signal generator for a brushless motor, characterized in that the conducting wire is wound around a U-shaped bobbin that is disposed toward the direction of the wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5339688U JPH01159577U (en) | 1988-04-20 | 1988-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5339688U JPH01159577U (en) | 1988-04-20 | 1988-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01159577U true JPH01159577U (en) | 1989-11-06 |
Family
ID=31279378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5339688U Pending JPH01159577U (en) | 1988-04-20 | 1988-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01159577U (en) |
-
1988
- 1988-04-20 JP JP5339688U patent/JPH01159577U/ja active Pending
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