JPH03111167U - - Google Patents
Info
- Publication number
- JPH03111167U JPH03111167U JP2069590U JP2069590U JPH03111167U JP H03111167 U JPH03111167 U JP H03111167U JP 2069590 U JP2069590 U JP 2069590U JP 2069590 U JP2069590 U JP 2069590U JP H03111167 U JPH03111167 U JP H03111167U
- Authority
- JP
- Japan
- Prior art keywords
- fixed
- coil
- shaft
- magnet
- position detection
- 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)
Description
第１図は本考案のブラシレスモータの一実施例
の構成を示す断面図、第２図は第１図の一部を拡
大して示す断面図、第３図は本考案のブラシレス
モータを駆動する駆動回路の一実施例の構成を示
すブロツク図、第４図は第１図の実施例の調整動
作を説明する波形図、第５図は従来のブラシレス
モータの一例の構成を示す断面図である。
１……ステータ、１ａ，１４……孔、２……シ
ヤフト、４……コア、５……コイル、６，７……
ボールベアリング、８……ロータ、９……メイン
マグネツト、１０，２４……ホール素子、１１…
…ＦＧマグネツト、１２，１３……磁性流体シー
ル、１５，１６……コード、２１……段部、２２
，２３……溝、２５……位置検出用マグネツト。
Fig. 1 is a cross-sectional view showing the configuration of an embodiment of the brushless motor of the present invention, Fig. 2 is a cross-sectional view showing an enlarged part of Fig. 1, and Fig. 3 is a diagram showing the configuration of an embodiment of the brushless motor of the present invention. FIG. 4 is a waveform diagram illustrating the adjustment operation of the embodiment of FIG. 1, and FIG. 5 is a sectional view showing the configuration of an example of a conventional brushless motor. . 1... Stator, 1a, 14... Hole, 2... Shaft, 4... Core, 5... Coil, 6, 7...
Ball bearing, 8... Rotor, 9... Main magnet, 10, 24... Hall element, 11...
...FG magnet, 12, 13... Magnetic fluid seal, 15, 16... Cord, 21... Step part, 22
, 23... Groove, 25... Position detection magnet.
Claims (1)
、 前記シヤフトに固定されたコイルと、 少なくとも前記コイルとメインマグネツトをシ
ールする磁性流体シールと、 前記磁性流体シールによるシール領域の外側に
おいて前記ロータに固定された位置検出用マグネ
ツトと、 前記位置検出用マグネツトに対向するようにス
テータに固定されたホール素子と、 前記コイルに接続されたコードを外部に導出す
る前記シヤフトに形成された孔とを備えることを
特徴とするブラシレスモータ。[Claims for Utility Model Registration] A motor to which a main magnet is fixed, a shaft to which the rotor is rotatably supported, a coil fixed to the shaft, and a magnetic material that seals at least the coil and the main magnet. a fluid seal; a position detection magnet fixed to the rotor outside the sealing area by the magnetic fluid seal; a Hall element fixed to the stator so as to face the position detection magnet; and a Hall element connected to the coil. and a hole formed in the shaft for leading out the cord to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2069590U JPH03111167U (en) | 1990-02-28 | 1990-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2069590U JPH03111167U (en) | 1990-02-28 | 1990-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03111167U true JPH03111167U (en) | 1991-11-14 |
Family
ID=31523784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2069590U Pending JPH03111167U (en) | 1990-02-28 | 1990-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03111167U (en) |
-
1990
- 1990-02-28 JP JP2069590U patent/JPH03111167U/ja active Pending