JPH0453187Y2 - - Google Patents
Info
- Publication number
- JPH0453187Y2 JPH0453187Y2 JP17969685U JP17969685U JPH0453187Y2 JP H0453187 Y2 JPH0453187 Y2 JP H0453187Y2 JP 17969685 U JP17969685 U JP 17969685U JP 17969685 U JP17969685 U JP 17969685U JP H0453187 Y2 JPH0453187 Y2 JP H0453187Y2
- Authority
- JP
- Japan
- Prior art keywords
- drive coil
- coils
- electric motor
- permanent magnets
- brushless electric
- 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.)
- Expired
Links
- 238000010030 laminating Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 12
- 239000000758 substrate Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
Landscapes
- Brushless Motors (AREA)
- Windings For Motors And Generators (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は永久磁石を用いたブラシなし電動機
に関するものである。[Detailed description of the invention] [Industrial application field] This invention relates to a brushless electric motor using permanent magnets.
第５図〜第９図は、例えば特開昭55−16644号
公報に示されたものに類似した従来のブラシなし
電動機を示す図で、第５図は縦断面図、第６図及
び第７図は駆動コイルの平面図及び横断面図、第
８図及び第９図はトルクリプル波形図及びその説
明図である。
5 to 9 are views showing a conventional brushless electric motor similar to, for example, the one shown in Japanese Patent Application Laid-open No. 55-16644, in which FIG. 5 is a longitudinal sectional view, and FIGS. The figure is a plan view and a cross-sectional view of the drive coil, and FIGS. 8 and 9 are torque ripple waveform diagrams and their explanatory diagrams.
図中、１は基板、２は基板１に固定された円筒
状の保持具、３は保持具２内に設けられた軸受
４，５で支持された軸、６は軸３に固定され基板
１と平行に配置された円板状の回転子、７は回転
子６の基板１側に固着され交互にＮ極及びＳ極が
着磁された永久磁石、８は基板１に固着され永久
磁石７と対向配置された複数個の駆動コイルで、
それぞれうず巻き状に巻回された三角形状のコイ
ルが複数層積層して形成されている。９は基板１
に固定され永久磁石７と駆動コイル８の間に介在
する印刷配線板である。 In the figure, 1 is a substrate, 2 is a cylindrical holder fixed to the substrate 1, 3 is a shaft supported by bearings 4 and 5 provided in the holder 2, and 6 is a substrate 1 fixed to the shaft 3. 7 is a permanent magnet fixed to the substrate 1 side of the rotor 6 and has N and S poles alternately magnetized; 8 is a permanent magnet 7 fixed to the substrate 1; With multiple drive coils arranged facing each other,
It is formed by laminating multiple layers of triangular coils, each spirally wound. 9 is board 1
This is a printed wiring board fixed to and interposed between the permanent magnet 7 and the drive coil 8.
従来の面対向方式のブラシなし電動機は上記の
ように構成され、駆動コイル８に流れる電流と、
永久磁石７との電磁力により回転力を発生させる
ものである。 A conventional face-to-face type brushless motor is configured as described above, and has a current flowing through the drive coil 8,
Rotational force is generated by electromagnetic force with the permanent magnet 7.
回転子６が回転すると、回転角に対応して第８
図に示すようなトルクリプルＴを発生する。駆動
コイル８の横断面は第７図に示すように長方形と
なつているので、第９図に示すようにコイル各層
でのトルクリプルT1，T2…のピークは互いに一
致し、トルクリプルT1，T2…の合成が全体のト
ルクリプルＴとして表れる。 When the rotor 6 rotates, the eighth
A torque ripple T as shown in the figure is generated. Since the cross section of the drive coil 8 is rectangular as shown in FIG. 7, the peaks of torque ripples T 1 , T 2 . . . in each layer of the coil coincide with each other as shown in FIG . The combination of T 2 ... appears as the overall torque ripple T.
上記のような従来のブラシなし電動機では、駆
動コイルを形成する各層のコイルによるトルクリ
プルT1，T2…のピークが一致しているため、全
体のトルクリプルＴは大きくなり、回転むらが生
じるという問題点がある。
In the conventional brushless electric motor as described above, the peaks of the torque ripples T 1 , T 2 . . . due to the coils of each layer forming the drive coil coincide, so the overall torque ripple T becomes large, resulting in uneven rotation. There is a point.
この考案は上記問題点を解決するためになされ
たもので、トルクリプルを小さくして、円滑な回
転が得られるようにしたブラシなし電動機を提供
することを目的とする。 This invention was made in order to solve the above-mentioned problems, and its purpose is to provide a brushless electric motor that can reduce torque ripple and provide smooth rotation.
この考案に係るブラシなし電動機は、駆動コイ
ルを構成する各層のコイルを順次横方向にずらせ
て配置し、駆動コイルを厚さ方向に対して所定角
度傾斜させたものである。
In the brushless electric motor according to this invention, the coils of each layer constituting the drive coil are sequentially shifted in the lateral direction, and the drive coil is inclined at a predetermined angle with respect to the thickness direction.
この考案においては、駆動コイルを構成する各
層のコイルに発生するトルクに位相差が生じ、そ
れぞれピークのずれたトルクリプルの合成が全体
のトルクリプルとなる。
In this invention, a phase difference occurs in the torques generated in the coils of each layer constituting the drive coil, and the composite of torque ripples with shifted peaks becomes the overall torque ripple.
第１図〜第５図はこの考案の一実施例を示す図
で、第１図及び第２図は駆動コイルの平面図及び
横断面図、第３図及び第４図はトルクリプル波形
図及びその説明図であり、１〜７，９は上記従来
装置と同様のものである。
Figures 1 to 5 are diagrams showing an embodiment of this invention. Figures 1 and 2 are a plan view and a cross-sectional view of the drive coil, and Figures 3 and 4 are torque ripple waveform diagrams and their diagrams. It is an explanatory diagram, and numerals 1 to 7 and 9 are similar to the conventional device described above.
図中、８は駆動コイルで、それぞれうず巻き状
に巻回された三角形状のコイルが複数層積層して
形成されると共に、各層のコイルは順次横方向に
ずらせて配置され、その横断面は第２図に示すよ
うに角度θだけ傾斜した平行四辺形になつてい
る。角度θは10〜45度にすることが望ましい。 In the figure, reference numeral 8 denotes a drive coil, which is formed by laminating multiple layers of triangular coils each wound in a spiral shape, and the coils in each layer are arranged sequentially shifted in the horizontal direction, and its cross section is As shown in Figure 2, it is a parallelogram inclined by an angle θ. It is desirable that the angle θ is 10 to 45 degrees.
上記のように構成されたブラシなし電動機にお
いては、その回転角と出力トルクの関係は第３図
及び第４図に示すようになる。すなわち、コイル
各層でのトルクリプルT1，T2…のピークは互い
にずれるため、トルクリプルT1，T2…の合成で
ある全体のトルクリプルＴは、第８図に示すもの
よりも小さくなり、トルクむらが低下し、円滑な
回転が得られる。 In the brushless electric motor constructed as described above, the relationship between its rotation angle and output torque is as shown in FIGS. 3 and 4. That is, since the peaks of torque ripples T 1 , T 2 . . . in each coil layer are shifted from each other, the overall torque ripple T, which is a composite of torque ripples T 1 , T 2 . is reduced, resulting in smooth rotation.
以上説明したとおりこの考案では、ブラシなし
電動機の駆動コイルを構成する各層のコイルを順
次横方向にずらせて配置し、駆動コイルを厚さ方
向に対して所定角度傾斜させたので、それぞれピ
ークのずれたトルクリプルが合成されて全体のト
ルクリプルは小さくなり、円滑な回転が得られる
という効果がある。
As explained above, in this invention, the coils of each layer constituting the drive coil of a brushless motor are sequentially shifted in the horizontal direction, and the drive coil is tilted at a predetermined angle with respect to the thickness direction. This has the effect of reducing the overall torque ripple by combining the torque ripples, resulting in smoother rotation.
第１図〜第４図はこの考案によるブラシなし電
動機の一実施例を示す図で、第１図は駆動コイル
の平面図、第２図は第１図の−線断面図、第
３図及び第４図はトルクリプル波形図及びその説
明図、第５図はこの考案及び従来のブラシなし電
動機の縦断面図、第６図〜第９図は従来のブラシ
なし電動機を示す図で、第６図は駆動コイルの平
面図、第７図は第６図の−線断面図、第８図
及び第９図はトルクリプル波形図及びその説明図
である。
図中、６は回転子、７は永久磁石、８は駆動コ
イルである。なお、図中同一符号は同一又は相当
部分を示す。
1 to 4 are diagrams showing an embodiment of the brushless electric motor according to this invention, in which FIG. 1 is a plan view of the drive coil, FIG. 2 is a cross-sectional view taken along the line -- in FIG. Fig. 4 is a torque ripple waveform diagram and its explanatory diagram; Fig. 5 is a vertical cross-sectional view of this invention and a conventional brushless motor; Figs. 6 to 9 are diagrams showing conventional brushless motors; 7 is a plan view of the drive coil, FIG. 7 is a sectional view taken along the line -- in FIG. 6, and FIGS. 8 and 9 are torque ripple waveform diagrams and explanatory diagrams thereof. In the figure, 6 is a rotor, 7 is a permanent magnet, and 8 is a drive coil. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
磁された永久磁石を配置し、この永久磁石と対
向してうず巻き状に巻回されたコイルが複数層
積層されてなる駆動コイルを配置し、この駆動
コイルの電流を制御して上記回転子を回転させ
るものにおいて、上記駆動コイルを構成する上
記各層のコイルを順次横方向にずらせて配置
し、上記駆動コイルを厚さ方向に対して所定角
度傾斜させたことを特徴とするブラシなし電動
機。 (2) 固定子コイルの厚さ方向の傾斜角度を10〜45
度の範囲とした実用新案登録請求の範囲第１項
記載のブラシなし電動機。[Claims for Utility Model Registration] (1) Permanent magnets magnetized with alternately different poles are arranged on the circumferential surface of a plate-shaped rotor, and the permanent magnets are wound in a spiral shape facing the permanent magnets. A drive coil formed by laminating multiple layers of coils is arranged, and the rotor is rotated by controlling the current of the drive coil, in which the coils of each of the layers constituting the drive coil are arranged so as to be sequentially shifted laterally. A brushless electric motor characterized in that the drive coil is inclined at a predetermined angle with respect to the thickness direction. (2) Set the inclination angle of the stator coil in the thickness direction to 10 to 45.
1. A brushless electric motor according to claim 1 of claim 1, which is registered as a utility model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17969685U JPH0453187Y2 (en) | 1985-11-21 | 1985-11-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17969685U JPH0453187Y2 (en) | 1985-11-21 | 1985-11-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6288470U JPS6288470U (en) | 1987-06-05 |
| JPH0453187Y2 true JPH0453187Y2 (en) | 1992-12-14 |
Family
ID=31122980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17969685U Expired JPH0453187Y2 (en) | 1985-11-21 | 1985-11-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0453187Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021175231A (en) * | 2020-04-21 | 2021-11-01 | 愛三工業株式会社 | Rotary electric machine |
-
1985
- 1985-11-21 JP JP17969685U patent/JPH0453187Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6288470U (en) | 1987-06-05 |
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