JPH02146996U - - Google Patents
Info
- Publication number
- JPH02146996U JPH02146996U JP1989056717U JP5671789U JPH02146996U JP H02146996 U JPH02146996 U JP H02146996U JP 1989056717 U JP1989056717 U JP 1989056717U JP 5671789 U JP5671789 U JP 5671789U JP H02146996 U JPH02146996 U JP H02146996U
- Authority
- JP
- Japan
- Prior art keywords
- hall element
- speed
- casing
- excitation coil
- low
- 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.)
- Granted
Links
- 230000005284 excitation Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 2
Landscapes
- Brushless Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Description
第１図乃至第３図は本考案の第１の実施例に係
り、第１図は全体の回路構成図、第２図は低速用
ホール素子及び高速用ホール素子の取付位置を説
明するために界磁コア及びマグネツトロータを横
断面で示した断面図、第３図はマグネツトロータ
の回転数と出力トルクとの関係を示す特性線図、
第４図は本考案の第２の実施例を示す一部回路構
成図、第５図乃至第８図は従来技術によるブラシ
レス直流モータを燃料ポンプに用いた場合を示し
、第５図は燃料ポンプ縦断面図、第６図は全体の
回路構成図、第７図はホール素子の取付位置を説
明するために界磁コア及びマグネツトロータを横
断面で示した断面図、第８図はマグネツトロータ
の回転数と出力トルクとの関係を示す特性線図で
ある。
１……ケーシング、１３……マグネツトロータ
、１５Ａ，１５Ｂ，１５Ｃ……低速用ホール素子
、１７……駆動制御回路、１６Ａ，１６Ｂ，１６
Ｃ……励磁コイル、３１Ａ，３１Ｂ，３１Ｃ……
高速用ホール素子、３２Ａ，３２Ｂ，３２Ｃ……
切換手段。
Figures 1 to 3 relate to the first embodiment of the present invention, Figure 1 is an overall circuit configuration diagram, and Figure 2 is for explaining the mounting positions of the low-speed Hall element and the high-speed Hall element. A sectional view showing the field core and the magnet rotor in cross section, FIG. 3 is a characteristic diagram showing the relationship between the rotation speed and output torque of the magnet rotor,
Fig. 4 is a partial circuit configuration diagram showing a second embodiment of the present invention, Figs. 5 to 8 show cases in which a brushless DC motor according to the prior art is used in a fuel pump, and Fig. 5 shows a fuel pump. 6 is a diagram of the overall circuit configuration, FIG. 7 is a sectional view showing the field core and magnet rotor in cross section to explain the mounting position of the Hall element, and FIG. 8 is a diagram of the magnet rotor. FIG. 3 is a characteristic diagram showing the relationship between the rotation speed of the rotor and the output torque. 1...Casing, 13...Magnetic rotor, 15A, 15B, 15C...Low speed Hall element, 17...Drive control circuit, 16A, 16B, 16
C... Excitation coil, 31A, 31B, 31C...
High-speed Hall element, 32A, 32B, 32C...
switching means.
Claims (1)
されたマグネツトロータと、該マグネツトロータ
の外周面に対面して前記ケーシング側に設けられ
た励磁コイルと、前記ケーシングに設けられ、前
記マグネツトロータの回転位置を検出する一また
は複数のホール素子と、前記ホール素子から出力
される検出信号の出力タイミングに基づき前記励
磁コイルに駆動電流を供給する駆動制御回路とを
備え、該励磁コイルは該駆動電流の供給により前
記マグネツトロータに一方向の回転力を付与する
ようにしたブラシレス直流モータにおいて、前記
各ホール素子を低速用ホール素子とし、該低速用
ホール素子に対して前記マグネツトロータの回転
方向手前側に設けられた高速用ホール素子と、前
記マグネツトロータが一定回転速度以上の高速に
なつたときに低速用ホール素子から高速用ホール
素子に切換えて前記駆動制御回路を作動させる切
換手段とを備えたことを特徴とするブラシレス直
流モータ。 a casing, a magnet rotor rotatably supported by the casing, an excitation coil provided on the casing side facing the outer circumferential surface of the magnet rotor, and an excitation coil provided in the casing and arranged on the magnet rotor. The excitation coil includes one or more Hall elements that detect a rotational position, and a drive control circuit that supplies a drive current to the excitation coil based on the output timing of a detection signal output from the Hall element. In the brushless DC motor, each of the Hall elements is a low-speed Hall element, and the direction of rotation of the magnetic rotor is determined with respect to the low-speed Hall element. a high-speed Hall element provided on the front side; and a switching means for switching from the low-speed Hall element to the high-speed Hall element to operate the drive control circuit when the magnetic rotor reaches a high rotational speed higher than a certain rotation speed. A brushless DC motor characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989056717U JPH0729755Y2 (en) | 1989-05-17 | 1989-05-17 | Brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989056717U JPH0729755Y2 (en) | 1989-05-17 | 1989-05-17 | Brushless DC motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02146996U true JPH02146996U (en) | 1990-12-13 |
| JPH0729755Y2 JPH0729755Y2 (en) | 1995-07-05 |
Family
ID=31580788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989056717U Expired - Lifetime JPH0729755Y2 (en) | 1989-05-17 | 1989-05-17 | Brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729755Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9742323B2 (en) | 2013-09-30 | 2017-08-22 | Mabuchi Motor Co., Ltd. | Phase control circuit for brushless motor, brushless motor and method for controlling the phase of brushless motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60103294U (en) * | 1983-12-16 | 1985-07-13 | 群馬日本電気株式会社 | 3 phase half wave brushless motor |
-
1989
- 1989-05-17 JP JP1989056717U patent/JPH0729755Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60103294U (en) * | 1983-12-16 | 1985-07-13 | 群馬日本電気株式会社 | 3 phase half wave brushless motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9742323B2 (en) | 2013-09-30 | 2017-08-22 | Mabuchi Motor Co., Ltd. | Phase control circuit for brushless motor, brushless motor and method for controlling the phase of brushless motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729755Y2 (en) | 1995-07-05 |
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