JPH031675U - - Google Patents
Info
- Publication number
- JPH031675U JPH031675U JP69489U JP69489U JPH031675U JP H031675 U JPH031675 U JP H031675U JP 69489 U JP69489 U JP 69489U JP 69489 U JP69489 U JP 69489U JP H031675 U JPH031675 U JP H031675U
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- infrared light
- light
- sintered permanent
- outer peripheral
- 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
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Brushless Motors (AREA)
Description
第１図は本考案の一実施例における回転位置検
出装置を備えたモータの要部の断面図、第２図は
第１図に示すモータのロータ部を示す斜視図、第
３図ａ，ｂは本考案の赤外光の反射及び非反射を
明確に説明するためのロータと反射板及びフオト
リフレクタの位置を示した構成図、第４図ａは従
来の回転位置検出装置を備えたモータの要部の断
面図、同図ｂはモータのロータ側から見た従来の
回転位置検出装置の構成図、第５図ａ，ｂは従来
の回転位置検出装置の赤外光の反射及び非反射を
明確に説明するためのロータと反射板及びフオト
リフレクタの位置を示した構成図である。
１……回転軸、２……スピンドル、３……軸受
ハウジング、４……ヨーク、５……コイル、６…
…プリント基板、６ａ……電子部品、７……フオ
トリフレクタ、８……反射板、９……永久磁石、
１０……ロータフレーム、１２……発光素子、１
３……受光素子。
Fig. 1 is a cross-sectional view of the main parts of a motor equipped with a rotational position detection device according to an embodiment of the present invention, Fig. 2 is a perspective view showing the rotor section of the motor shown in Fig. 1, and Figs. 3 a and b. Figure 4a is a configuration diagram showing the positions of the rotor, reflector, and photoreflector to clearly explain the reflection and non-reflection of infrared light according to the present invention, and Figure 4a is a diagram of a motor equipped with a conventional rotational position detection device. Figure 5a and b are cross-sectional views of the main parts of the conventional rotational position detection device as seen from the rotor side of the motor. FIG. 2 is a configuration diagram showing the positions of a rotor, a reflector, and a photoreflector for clear explanation. 1...Rotating shaft, 2...Spindle, 3...Bearing housing, 4...Yoke, 5...Coil, 6...
...Printed circuit board, 6a...Electronic component, 7...Photoreflector, 8...Reflector, 9...Permanent magnet,
10...Rotor frame, 12...Light emitting element, 1
3... Light receiving element.
Claims (1)
スモータの回転伝達部に薄円柱形の焼結永久磁石
を有し、該永久磁石の外周端面部の所定の箇所に
赤外光を反射すべく処理された薄板を配設し、前
記永久磁石の同心円上に任意の位置に前記反射板
より一定の距離をあけて固定された前記赤外光を
放出する発光素子と前記赤外光を受光する受光素
子を一体にした光学検出器を備え、前記焼結永久
磁石の外周端面部により前記赤外光を乱反射する
非反射部を構成した回転位置検出装置。 The rotation transmission section of a brushless motor that requires the function of detecting position signals has a thin cylindrical sintered permanent magnet, and a predetermined location on the outer peripheral end surface of the permanent magnet is treated to reflect infrared light. a light-emitting element that emits the infrared light, and a light-receiving element that receives the infrared light; What is claimed is: 1. A rotational position detecting device, comprising: an optical detector integrated with the sintered permanent magnet; and a non-reflecting portion that diffusely reflects the infrared light by an outer peripheral end surface portion of the sintered permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP69489U JPH031675U (en) | 1989-01-06 | 1989-01-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP69489U JPH031675U (en) | 1989-01-06 | 1989-01-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031675U true JPH031675U (en) | 1991-01-09 |
Family
ID=31504632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP69489U Pending JPH031675U (en) | 1989-01-06 | 1989-01-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031675U (en) |
-
1989
- 1989-01-06 JP JP69489U patent/JPH031675U/ja active Pending
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