JPH0380679U - - Google Patents
Info
- Publication number
- JPH0380679U JPH0380679U JP13942489U JP13942489U JPH0380679U JP H0380679 U JPH0380679 U JP H0380679U JP 13942489 U JP13942489 U JP 13942489U JP 13942489 U JP13942489 U JP 13942489U JP H0380679 U JPH0380679 U JP H0380679U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- poles
- hall element
- rotary drive
- drive coil
- 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 1
- 230000004907 flux Effects 0.000 claims 1
Landscapes
- Brushless Motors (AREA)
Description
第１図は本考案の平板モータに使用される磁石
の一実施例を示す平面図、第２図は平板モータを
示す一部断面図、第３図は本考案の平板モータ用
磁石を説明するための図、第４図Ａ，Ｂはそれぞ
れ従来例と実施例のホール素子出力電圧波形を示
すグラフ、第５図Ａ，Ｂはそれぞれ従来例と実施
例のリニア駆動電圧波形を示すグラフ、第６図Ａ
，Ｂはそれぞれ従来例と実施例の逆起電力波形を
示すグラフ、第７図Ａ，Ｂはそれぞれ従来例と実
施例のモータ駆動電圧波形を示すグラフ、第８図
は平板モータのトルクを示すグラフ、第９図およ
び第１０図は従来例に使用される磁石を示す平面
図である。
１，１ａ，１ｂ，１ｃ…磁石、２ａ，２ｂ，２
ｃ…Ｎ極、３ａ，３ｂ，３ｃ…Ｓ極、４ａ，４ｃ
…未着磁部分、５…ホール素子、６…回転駆動コ
イル。
Fig. 1 is a plan view showing an embodiment of the magnet used in the flat plate motor of the present invention, Fig. 2 is a partial cross-sectional view showing the flat plate motor, and Fig. 3 illustrates the flat plate motor magnet of the present invention. FIGS. 4A and 4B are graphs showing the Hall element output voltage waveforms of the conventional example and the example, respectively. FIGS. 5A and B are graphs showing the linear drive voltage waveforms of the conventional example and the example, respectively. Figure 6A
, B are graphs showing the back electromotive force waveforms of the conventional example and the example, respectively, Figures 7A and B are graphs showing the motor drive voltage waveforms of the conventional example and the example, respectively, and Figure 8 shows the torque of the flat plate motor. The graph and FIGS. 9 and 10 are plan views showing magnets used in conventional examples. 1, 1a, 1b, 1c... magnet, 2a, 2b, 2
c...N pole, 3a, 3b, 3c...S pole, 4a, 4c
...Unmagnetized portion, 5... Hall element, 6... Rotation drive coil.
Claims (1)
れている平板ドーナツ型の磁石と、 前記磁石の磁極による磁束の変化を検出し、そ
の検出電圧を出力するホール素子と、 前記磁石と対向するように配設された回転駆動
コイルとを有し、 前記ホール素子から出力される出力電圧により
、前記回転駆動コイルに流すモータ駆動電流を切
換制御する平板モータにおいて、 前記磁石の前記Ｓ極とＮ極との極間の前記ホー
ル素子と対向する位置に末着磁部分をそれぞれ設
けたことを特徴とする平板モータ。[Claims for Utility Model Registration] A flat donut-shaped magnet in which a plurality of S poles and N poles are alternately magnetized in the circumferential direction, and a detection voltage for detecting changes in magnetic flux due to the magnetic poles of the magnet. and a rotary drive coil disposed so as to face the magnet, the motor drive current flowing through the rotary drive coil being switched and controlled by the output voltage output from the Hall element. A flat plate motor, characterized in that end magnetized portions are provided at positions facing the Hall element between the south pole and north pole of the magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13942489U JPH0380679U (en) | 1989-11-30 | 1989-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13942489U JPH0380679U (en) | 1989-11-30 | 1989-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0380679U true JPH0380679U (en) | 1991-08-19 |
Family
ID=31686471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13942489U Pending JPH0380679U (en) | 1989-11-30 | 1989-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0380679U (en) |
-
1989
- 1989-11-30 JP JP13942489U patent/JPH0380679U/ja active Pending