JPS61195781U - - Google Patents
Info
- Publication number
- JPS61195781U JPS61195781U JP7454385U JP7454385U JPS61195781U JP S61195781 U JPS61195781 U JP S61195781U JP 7454385 U JP7454385 U JP 7454385U JP 7454385 U JP7454385 U JP 7454385U JP S61195781 U JPS61195781 U JP S61195781U
- Authority
- JP
- Japan
- Prior art keywords
- drive magnet
- detection coil
- drive
- coil
- notch
- 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 8
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
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
を示す縦断面図、第２図は第１図の駆動用マグネ
ツトおよび検出用コイルを示す斜視図、第３図は
第１図のブラシレスモータの動作を説明する図、
第４図は第１図のブラシレスモータの検出用コイ
ルから出力されるパルス信号波形図、第５図およ
び第６図は従来のブラシレスモータの斜視図およ
びロータの底面図、第７図は従来のブラシレスモ
ータにおいて検出用コイルから得られるパルス信
号の波形図である。
１，１９……ロータ板、２，２０……駆動用マ
グネツト、３，２１……ロータ、５……パルス信
号発生用マグネツト、６，２４……検出用コイル
、８，１３……磁芯、９……ケース、１１……回
転軸、１４……突極片、１５……駆動用コイル、
１７……ステータ、２２，２３……切込み部。
FIG. 1 is a longitudinal sectional view showing an embodiment of the brushless motor of the present invention, FIG. 2 is a perspective view showing the driving magnet and detection coil of FIG. 1, and FIG. 3 is a cross-sectional view of the brushless motor of FIG. A diagram explaining the operation,
Figure 4 is a pulse signal waveform diagram output from the detection coil of the brushless motor shown in Figure 1, Figures 5 and 6 are a perspective view of a conventional brushless motor and a bottom view of the rotor, and Figure 7 is a diagram of the conventional brushless motor. FIG. 3 is a waveform diagram of a pulse signal obtained from a detection coil in a brushless motor. 1, 19... Rotor plate, 2, 20... Drive magnet, 3, 21... Rotor, 5... Pulse signal generation magnet, 6, 24... Detection coil, 8, 13... Magnetic core, 9... Case, 11... Rotating shaft, 14... Salient pole piece, 15... Drive coil,
17... Stator, 22, 23... Notch portion.
Claims (1)
磁された環状の駆動用マグネツトを有し、前記駆
動コイルによつて回転駆動されるロータと、 前記駆動用マグネツトに対向して前記ステータ
に配置されたパルス信号を検出する検出用コイル
とを備え、 前記駆動用マグネツトの一方の端部に所定の磁
極毎に切込み部が形成され、 前記検出用コイルが、その巻軸を前記駆動用マ
グネツトの隣合う磁極の境目と平行になるように
配置されるとともに、前記検出用コイルの一端部
が、前記駆動マグネツトにあつて前記切り込み部
の形成された端部側に、かつ前記検出用コイルの
他端部が、前記切込み部を有しない端部側に位置
されてなることを特徴とするブラシレスモータ。[Claims for Utility Model Registration] A stator having a drive coil, and a rotor rotatably supported by the stator and having a multipolar magnetized annular drive magnet, which is rotationally driven by the drive coil. and a detection coil for detecting a pulse signal, which is disposed on the stator opposite to the drive magnet, and a notch is formed at one end of the drive magnet for each predetermined magnetic pole, The detection coil is arranged so that its winding axis is parallel to the boundary between adjacent magnetic poles of the drive magnet, and one end of the detection coil is located in the drive magnet to form the notch. A brushless motor characterized in that the other end of the detection coil is located on the end side that does not have the notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7454385U JPS61195781U (en) | 1985-05-20 | 1985-05-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7454385U JPS61195781U (en) | 1985-05-20 | 1985-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61195781U true JPS61195781U (en) | 1986-12-06 |
Family
ID=30614944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7454385U Pending JPS61195781U (en) | 1985-05-20 | 1985-05-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61195781U (en) |
-
1985
- 1985-05-20 JP JP7454385U patent/JPS61195781U/ja active Pending