JPH0275974U - - Google Patents
Info
- Publication number
- JPH0275974U JPH0275974U JP15175488U JP15175488U JPH0275974U JP H0275974 U JPH0275974 U JP H0275974U JP 15175488 U JP15175488 U JP 15175488U JP 15175488 U JP15175488 U JP 15175488U JP H0275974 U JPH0275974 U JP H0275974U
- Authority
- JP
- Japan
- Prior art keywords
- stator
- stator teeth
- yoke
- outer yoke
- thickness
- 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
- 230000004907 flux Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Brushless Motors (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Description
第１図はこの考案の一実施例の要部を示す説明
図、第２図は従来のブラシレスＤＣモータを示す
断面図である。
１……外ヨーク、２……固定子歯、３……スロ
ツト、４……内ヨーク、５……マグネツト、６…
…エアギヤツプ、７……コイル、１０……ステー
タ、４０……ロータ、Ｂ……磁束密度分布、θ…
…円周方向、Ｔ１……外ヨークの厚さ、Ｔ２……
固定子歯の厚さ。尚、図中、同一符号は同一又は
相当部分を示す。
FIG. 1 is an explanatory diagram showing a main part of an embodiment of this invention, and FIG. 2 is a sectional view showing a conventional brushless DC motor. 1...Outer yoke, 2...Stator tooth, 3...Slot, 4...Inner yoke, 5...Magnet, 6...
...Air gap, 7...Coil, 10...Stator, 40...Rotor, B...Magnetic flux density distribution, θ...
...Circumferential direction, T 1 ... Thickness of outer yoke, T 2 ...
Thickness of stator teeth. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
突設された複数の固定子歯を有するステータと、
円筒形状の内ヨーク及びこの内ヨークの外側に交
互に逆極性となるように設けられた複数のマグネ
ツトを有し且つ前記ステータ内に回転可能に配置
されたロータとを備え、前記複数のマグネツトの
各磁極がそれぞれ前記固定子歯の３つに対向され
ると共に、前記マグネツトにより前記固定子歯と
前記マグネツトとの間のエアギヤツプに発生する
磁束密度分布が前記ロータの円周方向に対して正
弦波状となるように設定されたブラシレスＤＣモ
ータにおいて、 前記外ヨークの厚さ及び前記固定子歯の厚さを
等しくしたことを特徴とするブラシレスＤＣモー
タ。[Claims for Utility Model Registration] A stator having a cylindrical outer yoke and a plurality of stator teeth protruding inside the outer yoke;
It has a cylindrical inner yoke and a plurality of magnets provided outside the inner yoke so as to have opposite polarity alternately, and a rotor rotatably disposed within the stator. Each magnetic pole is opposed to three of the stator teeth, and the magnetic flux density distribution generated by the magnet in the air gap between the stator teeth and the magnet is sinusoidal in the circumferential direction of the rotor. A brushless DC motor set to have the following characteristics: The thickness of the outer yoke and the thickness of the stator teeth are made equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15175488U JPH0275974U (en) | 1988-11-24 | 1988-11-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15175488U JPH0275974U (en) | 1988-11-24 | 1988-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0275974U true JPH0275974U (en) | 1990-06-11 |
Family
ID=31426083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15175488U Pending JPH0275974U (en) | 1988-11-24 | 1988-11-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0275974U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994005075A1 (en) * | 1992-08-12 | 1994-03-03 | Seiko Epson Corporation | Permanent magnet rotor of brushless motor and production method thereof |
-
1988
- 1988-11-24 JP JP15175488U patent/JPH0275974U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994005075A1 (en) * | 1992-08-12 | 1994-03-03 | Seiko Epson Corporation | Permanent magnet rotor of brushless motor and production method thereof |
| EP1009085A2 (en) * | 1992-08-12 | 2000-06-14 | Seiko Epson Corporation | Permanent magnet rotor of brushless motor and production method thereof |
| EP1009085A3 (en) * | 1992-08-12 | 2001-02-21 | Seiko Epson Corporation | Permanent magnet rotor of brushless motor and production method thereof |