JPH0787687B2 - Brushless motor - Google Patents
Brushless motorInfo
- Publication number
- JPH0787687B2 JPH0787687B2 JP63148882A JP14888288A JPH0787687B2 JP H0787687 B2 JPH0787687 B2 JP H0787687B2 JP 63148882 A JP63148882 A JP 63148882A JP 14888288 A JP14888288 A JP 14888288A JP H0787687 B2 JPH0787687 B2 JP H0787687B2
- Authority
- JP
- Japan
- Prior art keywords
- groove
- wall
- feed
- coil
- feed line
- 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 - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 238000009413 insulation Methods 0.000 description 7
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
Landscapes
- Brushless Motors (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Description
本発明はブラシレスモータ、殊に固定子鉄芯へのコイル
の取り付けのための構造に関する。The present invention relates to a brushless motor, and more particularly to a structure for mounting a coil on a stator iron core.
第９図に示すように、固定子鉄芯10における放射状に突
設された複数本の磁極部に夫々コイル11を巻回するにあ
たり、固定子鉄芯10に絶縁枠8,9を被せて、この絶縁枠
8,9の上からコイル11を巻回したものがあるが、この
時、図示のような３相６極で構成されるものでは、ある
磁極部からコイルを巻き始め、他の磁極部で巻き終わる
ことになる。つまり、ある磁極部に巻回したコイル巻線
11a,11b,11cが、これらから引き出した送り線111,112,1
13を通じて、上記の各磁極部と対称位置にある磁極部に
巻回したコイル巻線11d,11e,11fにつながっている状態
とすることになる。このために、第９図に示すように、
絶縁枠８に設けた円筒壁80の外面に沿って、各送り線11
1,112,113を配設したり、あるいは第10図に示すよう
な、各磁極部の上下を交互に通したりしている。As shown in FIG. 9, when winding the coils 11 around a plurality of magnetic poles provided in a radial projection on the stator core 10, the stator core 10 is covered with insulating frames 8 and 9, This insulation frame
There is a coil 11 wound from 8 and 9 above, but at this time, in the case of a three-phase 6-pole structure as shown in the figure, the coil starts to be wound from one magnetic pole part and is wound on the other magnetic pole part. Will be over. That is, a coil winding wound around a certain magnetic pole part
11a, 11b, 11c are the lead wires 11 1 , 11 2 , 1 drawn from these
Through 1 3, so that the coil winding 11d wound around the magnetic pole portion in each magnetic pole portion and the symmetrical position of the, 11e, the state has led to 11f to. For this purpose, as shown in FIG.
Along the outer surface of the cylindrical wall 80 provided on the insulating frame 8, each feed line 11
1 , 11, 2 and 11 3 are arranged, or as shown in FIG. 10, the upper and lower sides of each magnetic pole portion are alternately passed.
この場合、コイルの送り線は他の相の送り線や巻線と接
触することが避けられず、絶縁性能はコイルの絶縁被覆
のみに頼ることになる。従って、巻線磁の絶縁被覆の破
れやピンホール等が原因で相間のレアショートを起こす
おそれが高く、安全性及び信頼性に欠ける。 本発明は、このような点に鑑みなされたものであって、
その目的とするところは相間の絶縁を確実に確保するこ
とができて、安全性及び信頼性に富んだブラシレスモー
タ提供するにある。In this case, it is unavoidable that the coil feed line comes into contact with other phase feed lines and windings, and the insulation performance depends only on the coil insulation coating. Therefore, there is a high possibility that a short circuit between the phases will occur due to the breakage of the insulating coating of the winding magnet, the pinhole, etc., and the safety and reliability are poor. The present invention has been made in view of these points,
The purpose of this is to provide a brushless motor which is capable of reliably ensuring insulation between phases, and which is highly safe and reliable.
しかして本発明は、放射状に磁極部を突出させた固定子
鉄芯と、この固定子鉄芯を包む絶縁枠と、絶縁枠を介し
て固定子鉄芯の各磁極部に巻回されたコイルとを備え
て、複数の磁極部におけるコイル巻線が送り線でつなが
れているブラシレスモータにおいて、絶縁枠に環状の壁
を設けてこの壁の内周側にコイル巻線をつなぐ送り線の
配設用の溝を形成するとともに、この壁の上端に溝への
送り線の送り込み部を、壁を切り欠いた溝の底部位置に
溝からの送り線の送り出し部を設け、上記溝内に複数本
の送り線を螺旋状に且つ軸方向に間隔をおいて配してい
ることに特徴を有している。The present invention, therefore, is directed to a stator iron core having radially protruding magnetic pole portions, an insulating frame enclosing the stator iron core, and a coil wound around each magnetic pole portion of the stator iron core through the insulating frame. In a brushless motor in which coil windings in a plurality of magnetic pole portions are connected by a feed line, an insulating wall is provided with an annular wall, and the feed line connecting the coil windings is provided on the inner peripheral side of the wall. A groove for use is formed, and a feed line feed portion into the groove is provided at the upper end of this wall, and a feed line feed portion from the groove is provided at the bottom position of the groove notched in the wall. Is characterized by arranging the feed lines in a spiral shape and at intervals in the axial direction.
本発明によれば、壁によって送り線と他の相の巻線との
接触が阻止される上に、壁の内周側の溝への送り線の送
り込み部と、溝からの送り線の送り出し部との位置の差
によって、各送り線は螺旋状に傾くとともに互いに離れ
た状態となるために、異なる相の送り線同士の接触もな
くなる。According to the present invention, the wall prevents contact between the feed line and the winding of the other phase, and further, the feed line feed portion into the groove on the inner peripheral side of the wall and the feed line feed from the groove. Due to the difference in the position with the section, the respective feed lines are spirally inclined and separated from each other, so that the feed lines of different phases are not in contact with each other.
以下、図示実施例に基づいて説明する。まずモータの全
体構成から説明すると、このモータは、永久磁石５が内
周面に配されたロータ１と、ロータ１内に位置する固定
子鉄芯10と、固定子鉄芯10に装着されたコイル11、そし
て基台12とから構成されている。 ロータ１は一面が閉塞された円筒状をなすもので、その
中央部にはブッシュ４を介して回転軸３が固着されてお
り、内周面には円周方向においてＮ極,S極に着磁された
永久磁石５が複数個、保持具７に保持された状態で交互
に配設されている。ここにおける保持具７は、第２図に
示すように、環状であるとともに周面に複数個の窓7aを
備えており、永久磁石５は保持具７の各窓7aに納められ
た状態で保持具７ごとロータ１内に配されている。 平板状の鉄心を複数枚積層することで形成されるととも
に、成形品である絶縁枠8,9により上下から囲われた固
定子鉄心10は、第３図に示すように、中央部から放射状
に延びて先端面がロータ１の永久磁石５の内周面に小空
隙を介して対向する複数の磁極部10aを備え、これら磁
極部10aにコイル11が巻装されている。 上記両絶縁枠8,9は、固定子鉄心10の放射状の形状に合
わせたものとして形成されている。絶縁枠９における図
中9aは固定子鉄心10が嵌まり込む溝であり、絶縁枠８に
も同様の溝が設けられている。上記コイル11はこれら絶
縁枠8,9の上から巻装されている。 絶縁材からなる基台12は、第４図に示すように、円盤状
の平面部12aと中央部から上方に一体に突設された円筒
部12bとからなり、固定子鉄芯10が装着される円筒部12b
の外周面には固定子鉄心10の周方向の位置決めのための
リブ13が形成されている。このリブ13に対応して絶縁枠
8,9には係合凹所8b,9bが形成されており、また、固定子
鉄心10の内側にも係合凹所8b,9bを形成するために生じ
た突部が嵌まる凹所10bが形成されている。絶縁枠8,9で
囲まれた状態で円筒部12bに装着された固定子鉄心10
は、第１図に示すビス17によって基台12に固定される。
固定子鉄芯10の内週に形成された溝10c及び絶縁枠8,9の
内周面に形成された溝8c,9cは、このビス17を挿通する
ために形成されたものである。 基台12の円筒部12bの下部から平面部12aの上面に放射状
にリブ14が一体に形成されており、このリブ14間に固定
子鉄心10の磁極部10aが配置される。基台12の平面部12a
の外周部より固定片15が一体に外側方に向かって突設さ
れ、該固定片15には取付穴16が穿孔されている。また、
基台12の円筒部12bの内部には円筒状の軸受19が圧入固
定され、この軸受19により回転軸３が回転自在に軸支さ
れる。 そして、平面部12aの下面側には、上記固定片15で囲ま
れる収納スペース６が形成されており、この収納スペー
ス６に配線基板20が固定されている。 ビス21によって基台12に固着された配線基板20は、ロー
タ１の回転位置を検出するための磁気検出器23が基台12
に設けられた孔26を貫通するホルダー24を介して取り付
けられるとともに、基台12の孔25に挿通されたコイル端
子18が接続されているもので、磁気検出器23からの出力
によってコイル11への通電を制御する制御回路及び電源
回路が実装されている。 さて、上述のように、コイル11は絶縁枠8,9の上から固
定子鉄芯10の各磁極部10aに巻回されているわけであ
り、また３相６極となっているために、180゜離れたと
ころにある磁極部10a,10aに巻かれたコイル巻線11a・11
d,11b・11e,11c・11f同士が夫々送り線111,112,113によ
って互いにつながった状態となっているわけであるが、
ここにおける各送り線111,112,113は、絶縁枠８に形成
された溝83に沿って配設されている。 すなわち、絶縁枠８は、その上面に円筒状の壁81と、こ
れを囲む壁82とが立設されて、両壁81,82の間に溝83が
形成されたものとなっており、また外周側の壁82はコイ
ル巻線11d,11e,11fが巻かれる磁極部10aの部分に切り欠
き84を夫々備えている。 コイル11を巻くにあたっては、まずコイル巻線11aを巻
き、ついでコイル巻線11aにつながる送り線111を壁82を
越して溝83内に入れ、壁82よりも背の高い内周側の壁81
の外周面に添わせてコイル巻線11を施すべき磁極部10a
のところ設けられた切り欠き84から送り線111を引き出
し、コイル巻線11dを巻く。ついで、同様に、コイル巻
線11bと送り線112とコイル巻線11e、更にコイル巻線11c
と送り線113とコイル巻線11fを巻く。 この結果、各送り線111,112,113は、壁82によって他の
相のコイル巻線から仕切られたものとなり、また送り線
111,112,113は溝83内において、第６図に示すように、
いずれも斜めに配されることから、上下に離れており、
送り線111,112,113同士が接触することもない。溝83の
底面から突設されて送り線112、113に夫々上端が接する
突起85,86は、送り線111,112,113同士の上下間隔を更に
大きくするために設けられたものである。切り欠き84
は、磁極部10aの中心位置に一端がくるようにしておく
ことが、好ましい。 第７図及び第８図に示すように、溝82内に多条の螺旋リ
ブ87,88,89を設けて、送り線111を螺旋リブ87の上に、
送り線112を螺旋リブ88の上に、更に送り線113を螺旋リ
ブ89の上に配置すれば、螺旋リブ88,89によってこれら
送り線111,112,113同士の接触が確実に防止される。Hereinafter, description will be given based on illustrated embodiments. First, the overall structure of the motor will be described. In this motor, a permanent magnet 5 is arranged on an inner peripheral surface of a rotor 1, a stator iron core 10 located in the rotor 1, and a stator iron core 10 are mounted. It is composed of a coil 11 and a base 12. The rotor 1 has a cylindrical shape with one surface closed, and a rotating shaft 3 is fixed to a central portion of the rotor 1 via a bush 4. The inner peripheral surface of the rotor 1 is attached to north and south poles in the circumferential direction. A plurality of magnetized permanent magnets 5 are alternately arranged while being held by a holder 7. As shown in FIG. 2, the holder 7 here has an annular shape and is provided with a plurality of windows 7a on its peripheral surface, and the permanent magnet 5 is held in a state of being housed in each window 7a of the holder 7. The tools 7 are arranged in the rotor 1. The stator core 10, which is formed by stacking a plurality of flat plate-shaped cores and is surrounded by the insulating frames 8 and 9 as molded products from above and below, is radially arranged from the center as shown in FIG. A plurality of magnetic pole portions 10a whose extending end faces face the inner peripheral surface of the permanent magnet 5 of the rotor 1 with a small gap therebetween, and the coil 11 is wound around these magnetic pole portions 10a. The two insulating frames 8 and 9 are formed so as to match the radial shape of the stator core 10. In the figure, 9a in the insulating frame 9 is a groove into which the stator core 10 is fitted, and the insulating frame 8 is also provided with a similar groove. The coil 11 is wound from above the insulating frames 8 and 9. As shown in FIG. 4, the base 12 made of an insulating material is composed of a disk-shaped flat surface portion 12a and a cylindrical portion 12b integrally projecting upward from the central portion, and the stator iron core 10 is mounted on the base 12. Cylindrical part 12b
Ribs 13 for circumferentially positioning the stator core 10 are formed on the outer peripheral surface of the. Insulation frame corresponding to this rib 13
Engagement recesses 8b, 9b are formed in 8, 9 and also a recess 10b in which a protrusion formed to form the engagement recesses 8b, 9b is fitted inside the stator core 10 as well. Are formed. The stator core 10 mounted on the cylindrical portion 12b while being surrounded by the insulating frames 8 and 9.
Is fixed to the base 12 by screws 17 shown in FIG.
The groove 10c formed on the inner side of the stator core 10 and the grooves 8c and 9c formed on the inner peripheral surfaces of the insulating frames 8 and 9 are formed for inserting the screws 17. Ribs 14 are integrally formed radially from the lower portion of the cylindrical portion 12b of the base 12 to the upper surface of the flat portion 12a, and the magnetic pole portions 10a of the stator core 10 are arranged between the ribs 14. Flat part 12a of base 12
A fixing piece 15 is integrally projected from the outer peripheral portion of the fixing piece 15 toward the outer side, and a mounting hole 16 is formed in the fixing piece 15. Also,
A cylindrical bearing 19 is press-fitted and fixed inside the cylindrical portion 12b of the base 12, and the rotary shaft 3 is rotatably supported by the bearing 19. A storage space 6 surrounded by the fixing piece 15 is formed on the lower surface side of the flat portion 12a, and the wiring board 20 is fixed to the storage space 6. The wiring board 20 fixed to the base 12 with the screws 21 has a magnetic detector 23 for detecting the rotational position of the rotor 1 on the base 12.
The coil terminal 18 is attached through a holder 24 that penetrates a hole 26 provided in the coil terminal 18 and is inserted into a hole 25 of the base 12 and is connected to the coil 11 by an output from the magnetic detector 23. A control circuit and a power supply circuit for controlling the energization of are mounted. Now, as described above, the coil 11 is wound around each of the magnetic pole portions 10a of the stator iron core 10 from above the insulating frames 8 and 9, and since it has three phases and six poles, Coil windings 11a ・ 11 wound around the magnetic poles 10a, 10a 180 ° apart
The d, 11b, 11e, 11c and 11f are connected to each other by the feed lines 11 1 , 11 2 and 11 3 , respectively.
The feed lines 11 1 , 11 2 , and 11 3 here are arranged along the groove 83 formed in the insulating frame 8. That is, the insulating frame 8 is such that a cylindrical wall 81 and a wall 82 surrounding the cylindrical wall 81 are erected on the upper surface of the insulating frame 8 and a groove 83 is formed between the both walls 81, 82. The wall 82 on the outer peripheral side is provided with notches 84 in the magnetic pole portion 10a around which the coil windings 11d, 11e, 11f are wound. When winding the coil 11, first, the coil winding 11a is wound, and then the feed wire 11 1 connected to the coil winding 11a is inserted into the groove 83 across the wall 82, and the inner wall which is taller than the wall 82 is provided. 81
The magnetic pole portion 10a to which the coil winding 11 should be applied along the outer peripheral surface of the
Pull the feed line 11 1 from notch 84 provided at the, winding the coil winding 11d. Then, similarly, line feed and the coil winding 11b 11 2 and the coil winding 11e, further coil winding 11c
Wind the feed wire 11 3 and the coil winding 11f. As a result, each of the feed lines 11 1 , 11 2 and 11 3 is separated from the coil winding of the other phase by the wall 82, and
In the groove 83, 11 1 , 11 2 and 11 3 are, as shown in FIG.
Since they are all arranged diagonally, they are separated from each other vertically,
The feed lines 11 1 , 11 2 and 11 3 do not come into contact with each other. Projections 85 and 86 each upper end is in contact with the feed line 11 2, 11 3 are protruded from the bottom surface of the groove 83 is provided in order to further increase the feed line 11 1, 11 2, 11 3 vertical distance between It is a thing. Cutout 84
It is preferable that one end is located at the center position of the magnetic pole portion 10a. As shown in FIGS. 7 and 8, multiple spiral ribs 87, 88, 89 are provided in the groove 82, and the feed line 11 1 is placed on the spiral rib 87.
If the feed line 11 2 is arranged on the spiral rib 88 and further the feed line 11 3 is arranged on the spiral rib 89, the spiral ribs 88, 89 ensure the contact between the feed lines 11 1 , 11 2 , 11 3. To be prevented.
以上のように本発明においては、絶縁枠に環状の壁を設
けてこの壁の内周側にコイル線をつなぐ送り線の配設用
の溝を形成するとともに、この壁の上端に溝への送り線
の送り込み部を、壁を切り欠いた溝の底部位置に溝から
の送り線の送り出し部を設け、上記溝内に複数本の送り
線を螺旋状に且つ軸方向に間隔をおいて配していること
から、壁によって送り線と他の相の巻線との接触が阻止
される上に、壁の内周側の溝への送り線の送り込み部
と、溝からの送り線の送り出し部との高低差によって、
異なる相の送り線同士の接触もなくなるものであり、コ
イル巻線の絶縁被覆だけに頼らなくとも異相間の絶縁を
確実に確保することができるために、安全性及び信頼性
が大きく向上するものであり、また溝は一つでよいこと
から、溝の存在がモータ径を大きくしてしまうことも殆
どないものである。As described above, in the present invention, the insulating frame is provided with the annular wall, and the groove for arranging the feed line for connecting the coil wire is formed on the inner peripheral side of the wall, and the groove is formed at the upper end of the wall. The feed-in portion of the feed line is provided at the bottom of the groove notched in the wall, and the feed-out portion of the feed line is provided from the groove, and a plurality of feed lines are spirally and axially arranged in the groove. Therefore, the wall prevents contact between the feed wire and the windings of other phases, and the feed wire feed part into the groove on the inner peripheral side of the wall and the feed wire feed from the groove. Depending on the height difference with the department,
It also eliminates the contact between feed wires of different phases, and the insulation between different phases can be reliably ensured without relying solely on the insulation coating of the coil windings, which greatly improves safety and reliability. Since only one groove is required, the existence of the groove hardly increases the motor diameter.
第１図は本発明一実施例の断面図、第２図は同上のロー
タと保持具と永久磁石の分解斜視図、第３図は同上の固
定子鉄芯と絶縁枠の分解斜視図、第４図は同上の基台の
分解斜視図、第５図は同上のコイルの巻き付け状態を示
す平面図、第６図は同上の展開図、第７図は他の実施例
の平面図、第８図は同上の螺旋リブの斜視図、第９図は
従来例の斜視図、第10図は他の従来例の斜視図であっ
て、8,9は絶縁枠、10は固定子鉄心、10aは磁極部、11は
コイル、111,112,113は送り線、82は壁、83は溝、84は
切り欠きを示す。FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is an exploded perspective view of a rotor, a holder, and a permanent magnet of the same, FIG. 3 is an exploded perspective view of a stator core and an insulating frame of the same, 4 is an exploded perspective view of the above-mentioned base, FIG. 5 is a plan view showing a coil winding state of the same, FIG. 6 is a developed view of the same, FIG. 7 is a plan view of another embodiment, and FIG. The figure is a perspective view of the above-mentioned spiral rib, FIG. 9 is a perspective view of a conventional example, and FIG. 10 is a perspective view of another conventional example, in which 8 and 9 are insulating frames, 10 is a stator core, and 10a is Magnetic pole parts, 11 are coils, 11 1 , 11 2 , 11 3 are feed lines, 82 is a wall, 83 is a groove, and 84 is a notch.
Claims (1)
と、この固定子鉄芯を包む絶縁枠と、絶縁枠を介して固
定子鉄芯の各磁極部に巻回されたコイルとを備えて、複
数の磁極部におけるコイル巻線が送り線でつながれてい
るブラシレスモータにおいて、絶縁枠に環状の壁を設け
てこの壁の内周側にコイル巻線をつなぐ送り線の配設用
の溝を形成するとともに、この壁の上端に溝への送り線
の送り込み部を、壁を切り欠いた溝の底部位置に溝から
の送り線の送り出し部を設け、上記溝内に複数本の送り
線を螺旋状に且つ軸方向に間隔をおいて配していること
を特徴とするブラシレスモータ。1. A stator iron core having magnetic pole portions protruding radially, an insulating frame enclosing the stator iron core, and a coil wound around each magnetic pole portion of the stator iron core through the insulating frame. A brushless motor in which the coil windings of a plurality of magnetic poles are connected by a feed line, the insulating wall is provided with an annular wall, and the feed line for connecting the coil windings is provided on the inner peripheral side of the wall. In addition to forming the groove of, the feed line feed portion to the groove is provided at the upper end of the wall, and the feed line feed portion from the groove is provided at the bottom position of the groove notched in the wall. A brushless motor characterized in that feed lines are arranged in a spiral shape and spaced apart in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63148882A JPH0787687B2 (en) | 1988-06-15 | 1988-06-15 | Brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63148882A JPH0787687B2 (en) | 1988-06-15 | 1988-06-15 | Brushless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01318534A JPH01318534A (en) | 1989-12-25 |
| JPH0787687B2 true JPH0787687B2 (en) | 1995-09-20 |
Family
ID=15462828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63148882A Expired - Lifetime JPH0787687B2 (en) | 1988-06-15 | 1988-06-15 | Brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0787687B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04261975A (en) * | 1991-01-07 | 1992-09-17 | Mitsubishi Electric Corp | Melting processing equipment |
| JPH0493482U (en) * | 1991-01-08 | 1992-08-13 | ||
| JP2002017076A (en) * | 2000-06-30 | 2002-01-18 | Kokusan Denki Co Ltd | Armature for magnetogenerator |
| JP2008167590A (en) * | 2006-12-28 | 2008-07-17 | Yamaha Motor Electronics Co Ltd | Armature for rotating electric machine |
| JP7412133B2 (en) * | 2019-10-29 | 2024-01-12 | 東洋電装株式会社 | Stator and stator manufacturing method |
| JP7309296B2 (en) * | 2021-01-21 | 2023-07-18 | デンヨー株式会社 | Armature insulator for outer rotor generator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6032534A (en) * | 1983-08-02 | 1985-02-19 | Sanyo Electric Co Ltd | Small-sized motor |
| JPS6158839U (en) * | 1984-09-20 | 1986-04-21 | ||
| JPH0713405Y2 (en) * | 1986-09-22 | 1995-03-29 | 澤藤電機株式会社 | Outer rotor type generator |
-
1988
- 1988-06-15 JP JP63148882A patent/JPH0787687B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01318534A (en) | 1989-12-25 |
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