JPH0272666U - - Google Patents
Info
- Publication number
- JPH0272666U JPH0272666U JP15173988U JP15173988U JPH0272666U JP H0272666 U JPH0272666 U JP H0272666U JP 15173988 U JP15173988 U JP 15173988U JP 15173988 U JP15173988 U JP 15173988U JP H0272666 U JPH0272666 U JP H0272666U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- detection device
- speed detection
- figures
- circuit board
- 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 description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
Landscapes
- Brushless Motors (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
第１図は従来のモートルの構造図、第２図はＦ
Ｇパターンを有するプリント基板を示す図、第３
図はＦＧマグネツトを示す図、第４図、第８図は
速度検出装置の拡大図、第５図、第９図はＦＧ信
号を示す図、第６図、第１０図はＦＧマグネツト
による発電電圧を示す図、第７図、第１１図はメ
インマグネツトのもれ磁束による発電電圧を示す
図、第１２図は実施例のモートル構造図、第１３
図は実施例の公差集積の説明図、第１４図は従来
例の公差集積の説明図である。
１……ロータ、２……メインマグネツト、３…
…ＦＧマグネツト、４……プリント基板Ａ、５…
…フレーム、６……止め輪、７……シヤフト、８
……調整ワツシヤ、９……軸受け、１０……ＦＧ
パターン、１１，１４……ＦＧ信号、１２，１５
……ＦＧマグネツトによる発電電圧、１３，１６
……メインマグネツトのもれ磁束による発電電圧
、１７……ＦＧマグネツトＢ、１８……プリント
基板Ｂ、１９……ＦＧヨーク、２０……プリント
基板Ｃ。
Figure 1 is a structural diagram of a conventional motor, Figure 2 is an F
Figure 3 showing a printed circuit board with a G pattern.
The figure shows the FG magnet, Figures 4 and 8 are enlarged views of the speed detection device, Figures 5 and 9 show the FG signal, and Figures 6 and 10 show the voltage generated by the FG magnet. Figures 7 and 11 are diagrams showing the generated voltage due to the leakage flux of the main magnet, Figure 12 is a motor structure diagram of the embodiment, and Figure 13 is
The figure is an explanatory diagram of tolerance accumulation in the embodiment, and FIG. 14 is an explanatory diagram of tolerance accumulation in the conventional example. 1...Rotor, 2...Main magnet, 3...
...FG magnet, 4... Printed circuit board A, 5...
...Frame, 6...Retaining ring, 7...Shaft, 8
...adjustment washer, 9...bearing, 10...FG
Pattern, 11, 14...FG signal, 12, 15
...Generated voltage by FG magnet, 13,16
...Generated voltage due to leakage magnetic flux of main magnet, 17...FG magnet B, 18... Printed circuit board B, 19... FG yoke, 20... Printed circuit board C.
Claims (1)
において、速度検出装置をメインマグネツトから
分離配置したことを特徴とするＤＣブラシレスモ
ートル。 A DC brushless motor having a speed detection device, characterized in that the speed detection device is arranged separately from a main magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15173988U JPH0272666U (en) | 1988-11-24 | 1988-11-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15173988U JPH0272666U (en) | 1988-11-24 | 1988-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0272666U true JPH0272666U (en) | 1990-06-04 |
Family
ID=31426054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15173988U Pending JPH0272666U (en) | 1988-11-24 | 1988-11-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0272666U (en) |
-
1988
- 1988-11-24 JP JP15173988U patent/JPH0272666U/ja active Pending
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