JPH019261Y2 - - Google Patents
Info
- Publication number
- JPH019261Y2 JPH019261Y2 JP1981115719U JP11571981U JPH019261Y2 JP H019261 Y2 JPH019261 Y2 JP H019261Y2 JP 1981115719 U JP1981115719 U JP 1981115719U JP 11571981 U JP11571981 U JP 11571981U JP H019261 Y2 JPH019261 Y2 JP H019261Y2
- Authority
- JP
- Japan
- Prior art keywords
- end bracket
- bracket
- rotor
- diameter
- small
- 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
- 238000009423 ventilation Methods 0.000 claims description 17
- 238000004804 winding Methods 0.000 claims description 17
- 210000000078 claw Anatomy 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 241001272720 Medialuna californiensis Species 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims 1
- 230000005284 excitation Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Description
【考案の詳細な説明】
本考案は小形電動機、特に通電により回転力を
発生させる巻線を備えた中空円筒状固定子と、該
固定子に小空隙を介して対向配置した回転子と、
該回転子を回転自在に支承する軸受を夫々に備え
た一対のエンドブラケツトより構成される小形電
動機の改良に関するものである。[Detailed description of the invention] The present invention is a small electric motor, in particular, a hollow cylindrical stator equipped with a winding that generates rotational force when energized, a rotor disposed opposite to the stator with a small gap in between,
The present invention relates to an improvement in a small electric motor comprised of a pair of end brackets each having a bearing for rotatably supporting the rotor.
本考案の小形電動機は、回転子に羽根を取り付
け、エンドブラケツトの端面及び外周面に通風孔
を備えてコイルエンドを冷却せしめるようにした
自己通風型小形電動機において、上記エンドブラ
ケツトの内側と固定子巻線の端部との間に絶縁物
製の導風板を介挿せしめて渦流の発生を防止する
ようにして成り、該導風板は環状の円板部と、該
円板部の外周に連なる上記エンドブラケツトに対
向する側に突出して設けた環状突起部と、上記環
状突起部の外周より上記環状突起部と反対方向に
突出するよう設けたその外径が上記エンドブラケ
ツトの内径より僅か大きい複数個の爪部と、エン
ドブラケツト結合用ボルトの挿通孔を形成するた
めエンドブラケツト外周壁を内側に窪ませて形成
した窪み部の内周に形成される内側突出部とこれ
に対向する固定子巻線部分間を隔離するため上記
環状突起部の外周から軸方向に延びる半月状絶縁
用袖片と、上記円板部の内周に設けたエンドブラ
ケツトに対向する側と反対の方向に突出するその
内径が上記エンドブラケツトの軸受ハウジングの
外径より大きく、且つ回転子に設けた羽根の外径
より小さい小径円筒部とより成り、上記爪部が上
記エンドブラケツトに嵌着され、上記小径円筒部
の端部が上記羽根に小空隙を介して対向されるよ
うにしたことを特徴とする。 The small electric motor of the present invention is a self-ventilation type small electric motor in which blades are attached to the rotor and ventilation holes are provided on the end surface and outer circumferential surface of the end bracket to cool the coil ends. A wind guide plate made of an insulator is inserted between the ends of the windings to prevent the generation of vortices. An annular protrusion protruding from the side facing the continuous end bracket, and an annular protrusion protruding from the outer periphery of the annular protrusion in a direction opposite to the annular protrusion, the outer diameter of which is slightly larger than the inner diameter of the end bracket. A plurality of claws, an inner protrusion formed on the inner periphery of a recess formed by recessing the outer circumferential wall of the end bracket inward to form an insertion hole for the end bracket coupling bolt, and a stator opposing the protrusion. A half-moon-shaped insulating sleeve piece extends in the axial direction from the outer periphery of the annular protrusion to isolate the winding parts, and protrudes in a direction opposite to the side facing the end bracket provided on the inner periphery of the disc part. The small diameter cylindrical part has an inner diameter larger than the outer diameter of the bearing housing of the end bracket and smaller than the outer diameter of the blades provided on the rotor, and the claw part is fitted into the end bracket, and the small diameter cylindrical part has an inner diameter larger than the outer diameter of the bearing housing of the end bracket. It is characterized in that the end portion of the blade is opposed to the blade through a small gap.
以下図面によつて従来及び本考案の実施例を説
明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Conventional embodiments and embodiments of the present invention will be described below with reference to the drawings.
第１図ａ，ｂにおいて１は固定子鉄心、２はこ
の固定子鉄心１に巻装した励磁巻線、３は前部エ
ンドブラケツト、４は後部エンドブラケツト、
５，６は夫々軸受、７は回転子、８は回転子７の
端部に設けた羽根、９は回転子軸、１０は後部エ
ンドブラケツト４の外周面に設けた通風孔、１１
は同じく端面に設けた後部通風孔、１２は固定子
鉄心１を挟んで前部及び後部エンドブラケツト
３，４を一体的に結合するためのボルト、１４は
このボルト１２を挿通するため後部エンドブラケ
ツト４の外周に設けた内方への窪み部、１５はボ
ルト１２の頭部受座となるよう後部エンドブラケ
ツト４の外周に上記窪み部に関連して設けた外方
への突出部である。 In FIGS. 1a and 1b, 1 is a stator core, 2 is an excitation winding wound around this stator core 1, 3 is a front end bracket, 4 is a rear end bracket,
5 and 6 are bearings, 7 is a rotor, 8 is a blade provided at the end of the rotor 7, 9 is a rotor shaft, 10 is a ventilation hole provided on the outer peripheral surface of the rear end bracket 4, and 11
12 is a bolt for integrally connecting the front and rear end brackets 3 and 4 with the stator core 1 in between, and 14 is a rear end bracket for inserting this bolt 12. 4 is an inwardly recessed portion provided on the outer periphery of the rear end bracket 4, and numeral 15 is an outwardly protruding portion provided in relation to the recessed portion on the outer periphery of the rear end bracket 4 to serve as a head seat for the bolt 12.
第１図ａ，ｂに示す従来の電動機では固定子鉄
心１に巻装した励磁巻線２に通電し回転子７に誘
導する磁力との相互作用で回転子７が回転するこ
とは周知の通りである。又励磁巻線２に通電する
ことに依り巻線又は鉄心中に発生する熱を放散す
るため後部エンドブラケツト４の外周面と端面に
通風孔１０及び後部通風孔１１を夫々設け、又回
転子７の端部に羽根８を設けており、回転子７が
回転すると羽根８がエンドブラケツト内の空気を
旋回させて遠心力で通風孔１０よりエンドブラケ
ツトの外に追い出し、新しい空気を後部通風孔１
１から吸引し矢印ＢからＣの方向へ冷却空気が流
れて固定子鉄心１、励磁巻線２、回転子７を冷却
する。ところが第１図ａ，ｂの構成のものでは矢
印Ｂ，Ｃの空気の流れの外に矢印Ｅに示すような
渦流が発生し効果的な通風冷却が出来ない欠陥が
あつた。 As is well known, in the conventional electric motor shown in FIGS. 1a and 1b, the rotor 7 rotates due to the interaction with the magnetic force induced in the rotor 7 by energizing the excitation winding 2 wound around the stator core 1. It is. Further, in order to dissipate the heat generated in the winding or the iron core when the excitation winding 2 is energized, a ventilation hole 10 and a rear ventilation hole 11 are provided on the outer peripheral surface and end surface of the rear end bracket 4, respectively. A blade 8 is provided at the end of the rotor 7, and when the rotor 7 rotates, the blade 8 swirls the air in the end bracket and expels the air from the end bracket through the ventilation hole 10 by centrifugal force, and the new air is passed through the rear ventilation hole 1.
Cooling air is sucked in from 1 and flows in the direction of arrows B to C to cool the stator core 1, excitation winding 2, and rotor 7. However, in the configurations shown in FIGS. 1A and 1B, a vortex flow as shown by the arrow E occurs in addition to the air flows shown by the arrows B and C, making it impossible to achieve effective ventilation cooling.
本考案は上述のような欠陥を除き効果的な通風
効果を得るようにしたものでその一実施例は第２
図ａ，ｂ、第３図ａ，ｂ及び第４図に示す。 The present invention eliminates the above-mentioned defects and obtains an effective ventilation effect, and one embodiment of the invention is the second embodiment.
It is shown in Figures a and b, Figures 3a and b, and Figure 4.
第２図ａ，ｂにおいて第１図ａ，ｂと共通の部
分には同じ番号を付して示す。本考案において
は、第２図に示すように導風板２０の一端を後部
エンドブラケツト４の内側に当接し、他の部分を
後部エンドブラケツト４と励磁巻線２の端部との
間に配設し、これによつて第１図で矢印Ｅで示し
た空気の渦流の通路を遮断し羽根８に依るフアン
効果によつて後部通風孔１１から外気を吸い込み
通風孔１０より機外へ排出し電動機の冷却機能を
向上し得るようにする。 In FIGS. 2a and 2b, parts common to those in FIGS. 1a and 1b are designated by the same numbers. In the present invention, as shown in FIG. 2, one end of the baffle plate 20 is brought into contact with the inside of the rear end bracket 4, and the other part is arranged between the rear end bracket 4 and the end of the excitation winding 2. By doing so, the passage of the vortex air flow shown by arrow E in FIG. To improve the cooling function of an electric motor.
第３図ａ，ｂは本考案小形電動機に用いる導風
板２０の詳細図で２１は後部エンドブラケツト４
の内径より僅か小さい外径の環状の円板部、２２
はこの円板部２１の外周に連なる幅の狭い前記エ
ンドブラケツトに対向する側に突出するその外径
が上記後部エンドブラケツト４の内径に略等しい
環状突起部、２３はこの環状突起部２２の外周に
連なり上記環状突起部２２と反対方向に突出する
複数個の爪部、２４は円板部２１の内周に連なり
その直径が軸方向に向かうに従つて次第に減少す
る小径円筒部、２５は後部エンドブラケツト４の
外周に上記窪み部１４を形成した結果その内周に
形成される内側突出部に沿つて前記環状突起部２
２の外周に沿つて配置され上記内側突出部とこれ
に対向する励磁巻線２部分間を隔離する半月状の
絶縁用袖片であり、これら導風板２０の各部分は
合成樹脂で一体に構成し複数個の爪部２３の外径
D0は後部エンドブラケツト４の内径寸法より僅
かに大きくして爪部２３の撓みによる反発力で導
風板を後部エンドブラケツト４の内側隅部に固定
する働きをさせる。この場合上記反発力を十分大
きくすれば導風板２０は後部エンドブラケツト４
からみだりに軸方向に移動することはない。環状
突起部２２は円板部２１よりd0だけ爪部２３の先
端が延びる方向と逆方向に突出し小径円筒部２４
の上記円板部２１との連接部の直径D1は後部エ
ンドブラケツト４に設けた軸受ハウジングの外径
d2より大きく、且つ小径円筒部２４の最小内径
D2の寸法は少なくとも回転子７に設けた羽根８
の外径d1より小さく又環状突起部２２から小径円
筒部２４の端面までの長さｌは小径円筒部２４の
端面と羽根８との間隙が小くなるような値に定め
る。 Figures 3a and 3b are detailed views of the air guide plate 20 used in the small electric motor of the present invention, and 21 is the rear end bracket 4.
an annular disk portion with an outer diameter slightly smaller than the inner diameter of 22;
23 is the outer periphery of the annular projection 22 , and 23 is an annular projection whose outer diameter is approximately equal to the inner diameter of the rear end bracket 4 and which protrudes toward the side facing the narrow end bracket connected to the outer periphery of the disc portion 21 . 24 is a small-diameter cylindrical portion that is continuous to the inner periphery of the disk portion 21 and whose diameter gradually decreases in the axial direction; 25 is a rear portion; As a result of forming the recess 14 on the outer periphery of the end bracket 4, the annular protrusion 2 is formed along the inner protrusion formed on the inner periphery.
This is a half-moon-shaped insulating sleeve piece that is arranged along the outer circumference of the air guide plate 20 and isolates the inner protrusion and the two parts of the excitation winding that oppose it, and each part of the baffle plate 20 is integrally made of synthetic resin. Outer diameter of the plurality of claws 23
D 0 is made slightly larger than the inner diameter of the rear end bracket 4 so that the repulsive force caused by the deflection of the claw portion 23 serves to fix the baffle plate to the inner corner of the rear end bracket 4. In this case, if the above-mentioned repulsion force is made sufficiently large, the air guide plate 20 will move toward the rear end bracket 4.
It does not move in the axial direction unnecessarily. The annular protrusion 22 protrudes from the disk portion 21 by d 0 in a direction opposite to the direction in which the tip of the claw portion 23 extends, and forms a small diameter cylindrical portion 24 .
The diameter D1 of the connecting portion with the disc portion 21 is the outer diameter of the bearing housing provided on the rear end bracket 4.
The minimum inner diameter of the cylindrical portion 24 that is larger than d 2 and has a small diameter
The dimension of D 2 is at least the blade 8 provided on the rotor 7.
The length l from the annular protrusion 22 to the end face of the small diameter cylindrical part 24 is set to a value that reduces the gap between the end face of the small diameter cylindrical part 24 and the blade 8.
本考案小形電動機は上記のような構成であるか
ら導風板２０を後部エンドブラケツト４の内側に
装着する場合には環状突起部２２を後部エンドブ
ラケツト４の内側に対向させ半月状絶縁用袖片２
５を後部エンドブラケツト４の内周面に形成され
た内側突出部に沿わせてエンドブラケツトの内側
の定位置に簡単に圧入することができ、爪部２３
の先端部がエンドブラケツトの内周面に嵌合固定
され容易に脱落することはなく以後の電動機組立
が容易となる。 Since the small electric motor of the present invention has the above-mentioned configuration, when the air guide plate 20 is installed inside the rear end bracket 4, the annular protrusion 22 is opposed to the inside of the rear end bracket 4, and a half-moon-shaped insulating sleeve piece is used. 2
5 can be easily press-fitted into a fixed position inside the end bracket along the inner protrusion formed on the inner peripheral surface of the rear end bracket 4, and the claw part 23
The tip of the bracket is fitted and fixed to the inner circumferential surface of the end bracket and will not easily fall off, making subsequent assembly of the motor easier.
又環状突起部２２が後部エンドブラケツト４の
後部通風孔１１を形成した端面内側に当接し、こ
の端面内側と円板部２１との間に羽根８に連通す
る間隙を作りこれが風の通路となる。 Further, the annular protrusion 22 comes into contact with the inner side of the end surface of the rear end bracket 4 where the rear ventilation hole 11 is formed, and creates a gap that communicates with the blade 8 between the inner side of this end surface and the disc part 21, which becomes a passage for air. .
エンドブラケツトに導風板を組み立てた第４図
の状態では第２図ａに示すように絶縁物製の導風
板２０が巻線端部の空気の渦流通路を遮断し、冷
却空気は後部通風孔１１より吸い込まれ羽根８の
フアン効果で巻線端を矢印ｃ又はｄのように流れ
て通風孔１０より排出され、第１図のように渦流
を生じないから冷却効果が良好となる。又本考案
の導風板は絶縁性のある合成樹脂で構成してある
ため巻線端とエンドブラケツトとの間の近接部の
絶縁性能を向上せしめる効果を兼ね備えるもので
ある。 When the air guide plate is assembled to the end bracket as shown in Figure 4, the air guide plate 20 made of an insulator blocks the vortex passage of air at the end of the winding, as shown in Figure 2a, and the cooling air is diverted to the rear ventilation. It is sucked in through the hole 11, flows along the end of the winding as shown by arrows c or d due to the fan effect of the blades 8, and is discharged from the ventilation hole 10, resulting in a good cooling effect because no vortex is generated as shown in FIG. Furthermore, since the baffle plate of the present invention is made of an insulating synthetic resin, it also has the effect of improving the insulation performance in the vicinity between the winding end and the end bracket.
以下本考案小形電動機の効果を列記すれば次の
通りである。 The effects of the small electric motor of the present invention are listed below.
１ 導風板２０をその爪部２３をエンドブラケツ
ト４の内周面に嵌合することによつて容易にエ
ンドブラケツト４に固定出来、これにより渦流
の発生が阻止されるようになる。1. The baffle plate 20 can be easily fixed to the end bracket 4 by fitting its claws 23 into the inner circumferential surface of the end bracket 4, thereby preventing the generation of vortices.
２ 導風板２０をエンドブラケツト４に組み込ん
だ際環状突起部２２によりエンドブラケツト４
の端面内側と導風板２０間に羽根８に連通する
風の通路が自動的に形成され、更にエンドブラ
ケツトの窪み部１４の内周に形成される内側突
出部とこれに対向する固定子巻線部分間を導風
板２０の半月状絶縁用袖片２５が隔離し両者間
の絶縁性能を向上するようになる。2 When the baffle plate 20 is assembled into the end bracket 4, the annular protrusion 22 makes the end bracket 4
An air passage communicating with the blade 8 is automatically formed between the inner side of the end surface of the end bracket and the baffle plate 20, and an inner protrusion formed on the inner periphery of the recess 14 of the end bracket and the stator winding opposite thereto are automatically formed. The half-moon insulating sleeve piece 25 of the baffle plate 20 isolates the wire portions, improving the insulation performance between them.
第１図ａは従来より実施されている自己通風冷
却形小形電動機の断面図、第１図ｂはＡ矢視方向
から見たその側面図、第２図ａは本考案を実施し
た小形電動機の断面図、第２図ｂはその側面図、
第３図ａは本考案における導風板の側面図、第３
図ｂはその縦断面図、第４図は後部エンドブラケ
ツトに導風板を装着した状態の内側面図である。
１……固定子鉄心、２……励磁巻線、３……前
部エンドブラケツト、４……後部エンドブラケツ
ト、５，６……軸受、７……回転子、８……羽
根、９……回転子軸、１０……通風孔、１１……
後部通風孔、１２……ボルト、１４……窪み部、
１５……突出部、２０……導風板、２１……円板
部、２２……環状突起部、２３……爪部、２４…
…小径円筒部、２５……絶縁用袖片。
Figure 1a is a sectional view of a conventional self-ventilation cooling type small electric motor, Figure 1b is a side view of the same as seen from the direction of arrow A, and Figure 2a is a small electric motor according to the present invention. A sectional view, FIG. 2b is a side view,
Figure 3a is a side view of the wind guide plate in the present invention;
Fig. b is a longitudinal sectional view thereof, and Fig. 4 is an inner side view of the rear end bracket with the air guide plate attached thereto. DESCRIPTION OF SYMBOLS 1... Stator core, 2... Excitation winding, 3... Front end bracket, 4... Rear end bracket, 5, 6... Bearing, 7... Rotor, 8... Vane, 9... Rotor shaft, 10... Ventilation hole, 11...
Rear ventilation hole, 12... Bolt, 14... Recessed part,
DESCRIPTION OF SYMBOLS 15... Projection part, 20... Wind guide plate, 21... Disk part, 22... Annular protrusion part, 23... Claw part, 24...
...Small diameter cylindrical portion, 25...Insulating sleeve piece.
Claims (1)
端面及び外周面に通風孔を備えてコイルエンドを
冷却せしめるようにした自己通風形小形電動機に
おいて、上記エンドブラケツトの内側と固定子巻
線の端部との間に絶縁物製の導風板２０を介挿せ
しめて渦流の発生を防止するようにして成り、該
導風板２０は環状の円板部２１と、該円板部２１
の外周に連なる上記エンドブラケツトに対向する
側に突出して設けた環状突起部２２と、上記環状
突起部２２の外周より上記環状突起部２２と反対
方向に突出するよう設けたその外径が上記エンド
ブラケツトの内径より僅か大きい複数個の爪部２
３と、エンドブラケツト結合用ボルト１２の挿通
孔を形成するためエンドブラケツト外周壁を内側
に窪ませて形成した窪み部１４の内周に形成され
る内側突出部とこれに対向する固定子巻線部分間
を隔離するため上記環状突起部２２の外周から軸
方向に延びる半月状絶縁用袖片２５と、上記円板
部２１の内周に設けたエンドブラケツトに対向す
る側と反対の方向に突出するその内径が上記エン
ドブラケツトの軸受ハウジングの外径より大き
く、且つ回転子に設けた羽根の外径より小さい小
径円筒部２４とより成り、上記爪部２３が上記エ
ンドブラケツトに嵌着され、上記小径円筒部２４
の端部が上記羽根に小空隙を介して対向されるよ
うにしたことを特徴とする小形電動機。 In a self-ventilation type small electric motor in which blades are attached to the rotor and ventilation holes are provided on the end surface and outer circumferential surface of the end bracket to cool the coil ends, there is a connection between the inside of the end bracket and the end of the stator winding. A baffle plate 20 made of an insulating material is inserted between them to prevent the generation of vortices.
An annular protrusion 22 protruding from the side opposite to the end bracket connected to the outer periphery of the end bracket; Multiple claws 2 slightly larger than the inner diameter of the bracket
3, an inner protrusion formed on the inner periphery of a recess 14 formed by recessing the outer peripheral wall of the end bracket inward to form an insertion hole for the end bracket coupling bolt 12, and a stator winding opposing the inner protrusion. A half-moon-shaped insulating sleeve piece 25 extends in the axial direction from the outer periphery of the annular protrusion 22 to isolate the parts, and a half-moon insulating sleeve piece 25 protrudes in the opposite direction to the side facing the end bracket provided on the inner periphery of the disc part 21. The small diameter cylindrical part 24 has an inner diameter larger than the outer diameter of the bearing housing of the end bracket and smaller than the outer diameter of the blades provided on the rotor, and the claw part 23 is fitted into the end bracket. Small diameter cylindrical part 24
A small electric motor characterized in that an end of the blade is opposed to the blade with a small gap interposed therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11571981U JPS5822850U (en) | 1981-08-05 | 1981-08-05 | small electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11571981U JPS5822850U (en) | 1981-08-05 | 1981-08-05 | small electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5822850U JPS5822850U (en) | 1983-02-12 |
| JPH019261Y2 true JPH019261Y2 (en) | 1989-03-14 |
Family
ID=29909975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11571981U Granted JPS5822850U (en) | 1981-08-05 | 1981-08-05 | small electric motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5822850U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61233191A (en) * | 1985-04-08 | 1986-10-17 | 三機工業株式会社 | Door hermetically closing apparatus for clean room |
| JP5468237B2 (en) * | 2008-11-05 | 2014-04-09 | 株式会社東芝 | Electric motor |
-
1981
- 1981-08-05 JP JP11571981U patent/JPS5822850U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5822850U (en) | 1983-02-12 |
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