JPS6138879U - brushless motor - Google Patents
brushless motorInfo
- Publication number
- JPS6138879U JPS6138879U JP12371284U JP12371284U JPS6138879U JP S6138879 U JPS6138879 U JP S6138879U JP 12371284 U JP12371284 U JP 12371284U JP 12371284 U JP12371284 U JP 12371284U JP S6138879 U JPS6138879 U JP S6138879U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- brushless motor
- head
- pickup head
- rotor
- 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
Landscapes
- Brushless Motors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案によるブラシレスモークの位相検出装置
の一実施例を示す断面図、第２図は第１図に示スブラシ
レスモータのステータ部の平面図、第３図は第１図のＰ
Ｇヘッドの平面図、第４図は第３図のＰＧヘッドが影響
を受ける磁束分布を示す説明図、第５図は第４図の磁束
分布を微分した磁束の変化率を示す説明図、第６図は従
来のブラシレスモークの位相検出装置の一例を示す断面
図、第７図は第６図のＰＣヘッドとＰＧマグネットとの
関係を示す平面図、第８図は第６図のＰＧマグネットの
磁束分布を示す説明図、第９図は第８図のＸ方向ベクト
ル磁束分布を微分した磁束の変化率を示す説明図、第１
０図は第７図のＰＣヘッドから出力される電圧波形を示
す説明図である。
１・・・・・・ロータ部、２・・・・・・ステータ部、
３・・・・・・回転子ヨーク、３ａ，３ｂ・・・・・・
窓孔、４・・・・・・回転子マグネット、５・・・・・
・回転軸、６・・・・・・固定子ヨーク、７・・・・・
・駆動コイル、８，９・・・・・・ＰＧマタネット（パ
ルス発生用磁石）、１−２・・・・・・コイ′ル、２０
・・・・・・ＰＣヘッド（ピックアップヘッド）、２１
・・・・・・コア。FIG. 1 is a sectional view showing an embodiment of the brushless smoke phase detection device according to the present invention, FIG. 2 is a plan view of the stator section of the brushless motor shown in FIG. 1, and FIG.
4 is an explanatory diagram showing the magnetic flux distribution affected by the PG head in FIG. 3; FIG. 5 is an explanatory diagram showing the rate of change in magnetic flux obtained by differentiating the magnetic flux distribution in FIG. 4; Fig. 6 is a cross-sectional view showing an example of a conventional brushless smoke phase detection device, Fig. 7 is a plan view showing the relationship between the PC head of Fig. 6 and the PG magnet, and Fig. 8 is a cross-sectional view of the PG magnet of Fig. 6. An explanatory diagram showing the magnetic flux distribution, FIG. 9 is an explanatory diagram showing the rate of change of magnetic flux obtained by differentiating the X-direction vector magnetic flux distribution in FIG.
FIG. 0 is an explanatory diagram showing a voltage waveform output from the PC head of FIG. 7. 1... Rotor section, 2... Stator section,
3...Rotor yoke, 3a, 3b...
Window hole, 4... Rotor magnet, 5...
・Rotating shaft, 6... Stator yoke, 7...
・Drive coil, 8, 9... PG magnet (pulse generation magnet), 1-2... Coil, 20
...PC head (pickup head), 21
······core.
Claims (1)
磁石を設け、該磁石に対向してステータ側にビックアッ
プヘッドを設け、該ピックアップヘッドの磁気ギャップ
を横切る前記磁石の磁束変化により、回転するロータの
位相を検出するブラシレスモータの位相検出装置におい
て、前記磁気ギャップを、前記ピックアップヘッドに対
向する前記磁石の端面に対し云傾斜するように設けたこ
とを特徴とするブラシレスモータの位相検出装置。A pulse generating magnet is provided on the rotor side which is rotatable with respect to the stator, and a pickup head is provided on the stator side facing the magnet, and the pick-up head is rotated by changes in the magnetic flux of the magnet that crosses the magnetic gap of the pickup head. A phase detection device for a brushless motor that detects a phase of a rotor, wherein the magnetic gap is provided so as to be inclined with respect to an end surface of the magnet facing the pickup head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12371284U JPS6138879U (en) | 1984-08-14 | 1984-08-14 | brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12371284U JPS6138879U (en) | 1984-08-14 | 1984-08-14 | brushless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6138879U true JPS6138879U (en) | 1986-03-11 |
| JPH0428218Y2 JPH0428218Y2 (en) | 1992-07-08 |
Family
ID=30682457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12371284U Granted JPS6138879U (en) | 1984-08-14 | 1984-08-14 | brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6138879U (en) |
-
1984
- 1984-08-14 JP JP12371284U patent/JPS6138879U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0428218Y2 (en) | 1992-07-08 |
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