JPS6211381U - - Google Patents
Info
- Publication number
- JPS6211381U JPS6211381U JP10182785U JP10182785U JPS6211381U JP S6211381 U JPS6211381 U JP S6211381U JP 10182785 U JP10182785 U JP 10182785U JP 10182785 U JP10182785 U JP 10182785U JP S6211381 U JPS6211381 U JP S6211381U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- rotational speed
- detection
- rotor disk
- fixed
- 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 13
- 239000000758 substrate Substances 0.000 claims 2
- 230000005415 magnetization Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Brushless Motors (AREA)
Description
第１図は本考案の実施例を示す要部断面図、第
２図および第３図イ，ロは従来例を示す一部断面
図並びに要部断面図である。
１……シリンダーユニツト、２……上ドラム、
３……下ドラム、４……軸、５……ブラシレスモ
ータ、７……回転子円板、８……駆動マグネツト
、９……回転速度検出用マグネツト、１２……駆
動コイル、１３……固定子継鉄、１６……回転位
相検出用マグネツト、１７……回転速度検出用プ
リント基板、１７ａ……回転位相検出用コイルパ
ターン。
FIG. 1 is a sectional view of a main part showing an embodiment of the present invention, and FIGS. 2 and 3 A and 3 are a partial sectional view and a sectional view of a main part showing a conventional example. 1...Cylinder unit, 2...Upper drum,
3... Lower drum, 4... Shaft, 5... Brushless motor, 7... Rotor disk, 8... Drive magnet, 9... Rotation speed detection magnet, 12... Drive coil, 13... Fixed Child yoke, 16... Magnet for rotational phase detection, 17... Printed circuit board for rotational speed detection, 17a... Coil pattern for rotational phase detection.
Claims (1)
動マグネツトを固着した回転子円板と、該回転子
円板の駆動マグネツトに軸方向にエアギヤツプを
隔てて対向する複数の駆動コイルを固着した固定
子継鉄からなり、該回転子円板の外周面に回転速
度検出用のマグネツトを取付け、該回転速度検出
用マグネツトに対向する方向に回転速度検出用基
板を配したブラシレスモータにおいて、該回転速
度検出用マグネツトの一部に回転位相検出用マグ
ネツトを設け、該回転速度検出用基板に該回転位
相検出用マグネツトの着磁ピツチに合わせた回転
位相検出用のコイルパターンを配設したことを特
徴とするブラシレスモータの回転信号検出構造。 A fixed rotor disk that is attached to a rotating shaft and has a drive magnet fixed thereto with a plurality of magnetic poles, and a plurality of drive coils that are fixed to the drive magnet of the rotor disk in the axial direction with an air gap in between. A brushless motor consisting of a secondary yoke, a rotational speed detection magnet attached to the outer peripheral surface of the rotor disk, and a rotational speed detection substrate arranged in a direction opposite to the rotational speed detection magnet, wherein the rotational speed is A part of the detection magnet is provided with a rotational phase detection magnet, and the rotational speed detection substrate is provided with a coil pattern for rotational phase detection that matches the magnetization pitch of the rotational phase detection magnet. Brushless motor rotation signal detection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10182785U JPS6211381U (en) | 1985-07-04 | 1985-07-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10182785U JPS6211381U (en) | 1985-07-04 | 1985-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6211381U true JPS6211381U (en) | 1987-01-23 |
Family
ID=30972911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10182785U Pending JPS6211381U (en) | 1985-07-04 | 1985-07-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6211381U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994001920A1 (en) * | 1992-07-09 | 1994-01-20 | Seiko Epson Corporation | Brushless motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57166871A (en) * | 1981-04-03 | 1982-10-14 | Japan Servo Co Ltd | Dc brushless motor |
-
1985
- 1985-07-04 JP JP10182785U patent/JPS6211381U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57166871A (en) * | 1981-04-03 | 1982-10-14 | Japan Servo Co Ltd | Dc brushless motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994001920A1 (en) * | 1992-07-09 | 1994-01-20 | Seiko Epson Corporation | Brushless motor |
| CN1045850C (en) * | 1992-07-09 | 1999-10-20 | 精工爱普生株式会社 | Brushless electric machine |
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