JPH0419954Y2 - - Google Patents
Info
- Publication number
- JPH0419954Y2 JPH0419954Y2 JP7441186U JP7441186U JPH0419954Y2 JP H0419954 Y2 JPH0419954 Y2 JP H0419954Y2 JP 7441186 U JP7441186 U JP 7441186U JP 7441186 U JP7441186 U JP 7441186U JP H0419954 Y2 JPH0419954 Y2 JP H0419954Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- field
- field core
- magnetic
- winding
- 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
- 238000004804 winding Methods 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Description
【考案の詳細な説明】
〔考案の利用分野〕
本考案は電動工具等に使用する整流子回転電機
の界磁鉄心に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a field core for a commutator rotating electric machine used in electric tools and the like.
電動工具等に使用する整流子電動機の凸極形界
磁鉄心は、界磁巻線保持と主磁束を通すために通
常第２図に示す形状をとる。
The convex-pole field core of a commutator motor used in electric tools and the like usually takes the shape shown in FIG. 2 in order to hold the field winding and pass the main magnetic flux.
ここで磁極形状からの整流対策の一つとして、
第３図に示すように磁極先端部にいくに従い空〓
長が大きくなるように、スロツトリツプルと磁束
分布を改善する方法が知られている。 Here, as one of the rectification measures based on the magnetic pole shape,
As shown in Figure 3, the sky becomes empty as you get to the tip of the magnetic pole.
Methods are known to improve the slot ripple and magnetic flux distribution so that the length increases.
この場合の欠点として、磁極最先端部は狭小と
なり、界磁巻線を装填する際、界磁巻線を傷付け
易い。又その対策として先端部の半径を大きくす
ると、巻線エリアが小さくなり、作業性が悪くな
るという欠点がある。又、先端部の半径の大きさ
を確保するために、磁極角を小さくすると、自動
巻時の巻線エリアが小さくなる。 A disadvantage in this case is that the leading edge of the magnetic pole is narrow, and the field winding is likely to be damaged when loading the field winding. In addition, if the radius of the tip is increased as a countermeasure, the winding area becomes smaller, resulting in poor workability. Furthermore, if the magnetic pole angle is made small in order to ensure the size of the radius of the tip, the winding area during automatic winding becomes smaller.
本考案の目的は、上記した従来技術の欠点をな
くし、巻線作業性は従来と同等とし、整流やモー
タ性能の向上を計ることである。
The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art, make winding workability equivalent to that of the prior art, and improve rectification and motor performance.
本考案は、磁極先端部は狭小のため磁束の流れ
は微少であり、この部分のみを大きくしても磁束
の変化は微少であることに着目し、巻線作業時に
支障とならぬよう工夫したものである。
The present invention focused on the fact that the magnetic flux flow is minute because the tip of the magnetic pole is narrow, and even if only this section is made larger, the change in magnetic flux is minute, so we devised a design that would not cause any hindrance during winding work. It is something.
本考案による実施例を第１図に示す。 An embodiment according to the present invention is shown in FIG.
界磁鉄心１の磁極５は凸極形をなし、磁極とヨ
ーク６の空間には界磁巻線４が装填されている。
界磁鉄心の中央には回転する電機子２がある。磁
極と電機子間の空〓長ｇは、角α内で同じ値と
し、αより磁極先端部３の近傍まで除々に大きく
するために、界磁鉄心の磁極幅を漸次小さくす
る。 The magnetic pole 5 of the field core 1 has a convex pole shape, and the field winding 4 is loaded in the space between the magnetic pole and the yoke 6.
At the center of the field core is a rotating armature 2. The air length g between the magnetic pole and the armature is set to the same value within the angle α, and the magnetic pole width of the field core is gradually reduced in order to gradually increase from α to the vicinity of the magnetic pole tip 3.
磁極先端部は、電機子に対する空〓長は少なく
とも最大空〓長よりも小さくして、すなわち磁極
幅を厚くして、界磁巻線の装填方向（印）に対
して円弧とする時の半径を可能なかぎり大きくと
るようにする。 The tip of the magnetic pole should have an empty length with respect to the armature that is at least smaller than the maximum empty length, that is, a thicker magnetic pole width, and a radius of a circular arc with respect to the field winding loading direction (marked). Try to make it as large as possible.
このようにした磁極先端部は厚さが厚くなつて
も、磁束は最大空〓長の部分（磁極幅がもつとも
小さい部分）を通るのでその量はわずかである。 Even if the thickness of the tip of the magnetic pole becomes thick, the amount of magnetic flux is small because it passes through the part with the maximum air length (the part where the magnetic pole width is the smallest).
本考案によれば、磁極の先端部のみを大きくし
てので、巻線作業のトラブルをなくして、スロツ
トリツプルの改善や磁束分布の改善が出来る。
According to the present invention, only the tip of the magnetic pole is enlarged, thereby eliminating troubles in winding work and improving slot ripple and magnetic flux distribution.
第１図は本考案になる界磁鉄心を使用した回転
電機の1/4部分の横断正面図、第２図および第３
図は各々従来の界磁鉄心を使用した回転電機の1/
４部分の横断正面図である。
図において、１は界磁鉄心、２は電機子、３は
磁極先端部、４は界磁巻線、５は磁極である。
Figure 1 is a cross-sectional front view of a 1/4 section of a rotating electric machine using the field core of the present invention, Figures 2 and 3
The diagrams each show a 1/2-inch rotating electrical machine using a conventional field core.
It is a cross-sectional front view of four parts. In the figure, 1 is a field core, 2 is an armature, 3 is a magnetic pole tip, 4 is a field winding, and 5 is a magnetic pole.
Claims (1)
機子と磁極との空〓長を、磁気中央より界磁巻線
にかゝる部分まで同一巾成形し、これより磁極先
端の近傍まで漸次大きくして成形するとともに、
該磁極先端部を、その空〓長が少なくとも最大空
〓長より小さくなるよう前記界磁鉄心の内側に円
弧状に腕曲させて成形し、前記磁極先端部が前記
界磁巻線の装填用案内部を成すよう成形して成る
界磁鉄心。 In the convex-pole field core of a commutator rotating electric machine, the air length between the armature and the magnetic poles is formed to the same width from the magnetic center to the part corresponding to the field winding, and from this point gradually to the vicinity of the magnetic pole tip. Along with enlarging and molding,
The magnetic pole tip is formed by bending the arm into an arc inside the field core so that the empty length thereof is at least smaller than the maximum empty length, and the magnetic pole tip is used for loading the field winding. A field core formed to form a guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7441186U JPH0419954Y2 (en) | 1986-05-19 | 1986-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7441186U JPH0419954Y2 (en) | 1986-05-19 | 1986-05-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62185435U JPS62185435U (en) | 1987-11-25 |
| JPH0419954Y2 true JPH0419954Y2 (en) | 1992-05-07 |
Family
ID=30919601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7441186U Expired JPH0419954Y2 (en) | 1986-05-19 | 1986-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0419954Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2703066B2 (en) * | 1989-09-06 | 1998-01-26 | 株式会社日立製作所 | Electric motor |
| US20190020228A1 (en) * | 2016-01-12 | 2019-01-17 | Mitsubishi Electric Corporation | Stator for rotary electric machine, rotary electric machine, and method for manufacturing stator for rotary electric machine |
-
1986
- 1986-05-19 JP JP7441186U patent/JPH0419954Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62185435U (en) | 1987-11-25 |
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