JPS6271453A - Commutator motor - Google Patents
Commutator motorInfo
- Publication number
- JPS6271453A JPS6271453A JP20922185A JP20922185A JPS6271453A JP S6271453 A JPS6271453 A JP S6271453A JP 20922185 A JP20922185 A JP 20922185A JP 20922185 A JP20922185 A JP 20922185A JP S6271453 A JPS6271453 A JP S6271453A
- Authority
- JP
- Japan
- Prior art keywords
- commutator
- carbon brush
- carbon
- brush
- resistivity
- 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
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、電気掃除機等に使用される電動機に関する
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to electric motors used in vacuum cleaners and the like.
従来の技術
従来この種電動機は、第３図のような構造になっていた
。2. Description of the Related Art Conventionally, this type of electric motor had a structure as shown in FIG.
すなわち、電動送風機内には、本体１に固定された界磁
（ステーター）２と、整流子３を取り付けた電機子（ロ
ーター）４’Ｓこの電機子４に外部電源からの電流を供
給するカーボンブラシ５が内蔵されている。そして、カ
ーボンブラシ５は単一の材料で形成されていた。That is, inside the electric blower, there is a field (stator) 2 fixed to the main body 1, an armature (rotor) 4' to which a commutator 3 is attached, and a carbon fiber that supplies current from an external power source to the armature 4. A brush 5 is built-in. The carbon brush 5 was made of a single material.
発明が解決しようとする問題点
しかし、比抵抗の小さい材質のカーボンブラシを使用す
る際、電動機の運転時においてスパークが発生しやすか
った。Problems to be Solved by the Invention However, when a carbon brush made of a material with low specific resistance is used, sparks are likely to occur when the electric motor is operated.
つまり、比抵抗が小さい為に、電流が大きく流れること
になり、スパークが、カーボンブラシの整流子の回転方
向側に発生しやすくなっていた。In other words, since the specific resistance is small, a large current flows, and sparks are likely to occur on the side of the carbon brush in the rotational direction of the commutator.
そこで、本発明は、カーボンブラシが電動機の運転時で
スパークを防ごうとするものである。Therefore, the present invention aims to prevent sparks using carbon brushes during operation of the electric motor.
問題点を解決するための手段
そして、上記問題点を解決する本発明の技術的手段は、
カーボンブラシの整流子の回転方向側を比抵抗の高いカ
ーボンで形成したものである。Means for solving the problems and the technical means of the present invention for solving the above problems are:
The side of the carbon brush in the rotation direction of the commutator is made of carbon with high specific resistance.
作 用 この技術的手段による作用は次のようになる。For production The effect of this technical means is as follows.
すなわち、電動機の運転時において、カーボンブラシの
整流子の回転方向側が比抵抗の高い材質で形成されてい
るので、カーボンブラシを流れる電流は比抵抗の高い方
へはわずかじか流れず、その結果スパークが抑制さ；１
．る。In other words, when the motor is operating, the carbon brush on the side in the direction of rotation of the commutator is made of a material with high resistivity, so the current flowing through the carbon brush only slightly flows toward the side with higher resistivity. Spark suppressed; 1
．． Ru.
実施例
以下、本発明の一実施例を添付図面に基づいて説明する
。EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings.
第１図において、６は電動送風機本体で、この本体θ内
には、本体６に固定された界磁コア７と、その周囲に巻
かれた界磁巻線８からなる界磁（ステーター）９と、駆
動軸１０に固定された電機子コア１１、その周囲に巻か
れた電機子巻線１２さらに、駆動軸１０下方に固定され
た整流子１３からなる電機子（ローター）１４、仁の電
機子１４に外部電源からの電流を供給するカーボンブラ
シ１６とこれを保護する異形管１６全内蔵している。In FIG. 1, reference numeral 6 denotes the electric blower main body, and within this main body θ is a field (stator) 9 consisting of a field core 7 fixed to the main body 6 and a field winding 8 wound around the field core 7. and an armature (rotor) 14 consisting of an armature core 11 fixed to the drive shaft 10, an armature winding 12 wound around it, and a commutator 13 fixed below the drive shaft 10. A carbon brush 16 that supplies current from an external power source to the child 14 and a deformed tube 16 that protects the carbon brush 16 are all built-in.
１７は、異形管１６を保持するホルダー、１８は軸絶縁
紙である。電動送風機本体６上方には、駆動軸１ｏに固
定されたインペラ１９と、インペラ１９の回転により発
生する動圧を効率よく静圧に変換するエアーガイド２０
が設けられている。エアーガイド２０より排出された空
気は風穴を通９電動送風機本体６内に導かれ、界磁巻線
８や電機子巻線１２を冷却した後、排出孔２２より排出
される。前記カーボンブラシ１５は、第２図に示すよう
に異形管１６に固定されたスプリング２３で整流子片２
４へ押されている。このカーボンブラシ１５は、整流子
１３の回転方向側が比抵抗の高い材質２５で形成されて
いる。17 is a holder that holds the irregularly shaped tube 16, and 18 is a shaft insulating paper. Above the electric blower main body 6, there is an impeller 19 fixed to the drive shaft 1o, and an air guide 20 that efficiently converts the dynamic pressure generated by the rotation of the impeller 19 into static pressure.
is provided. The air discharged from the air guide 20 is guided into the electric blower main body 6 through the air hole 9, cools the field winding 8 and the armature winding 12, and then is discharged from the discharge hole 22. As shown in FIG.
It's pushed to 4. The carbon brush 15 is made of a material 25 having a high specific resistance on the side in the rotation direction of the commutator 13.
次にこの実施例における作用を説明する。普通電動送風
機の運転時において、スパークは、カーボンブラシ１５
の整流子１３の回転方向側に発生する。これは、１つの
整流子片２４がカーボンブラシ１５と通電している状態
から整流子１３が回転して、整流子片２４がプツシ先端
から離れる際に、この整流子片２４とカーボンブラシ１
５先端との間にアークが発生し、その結果スパークに至
るからである。したがって、第２図のように、カーボン
ブラシ１６の整流子１３の回転方向側に比抵抗の高い材
質のカーボン１６を形成すればスパークに対し非常に効
果的である。Next, the operation of this embodiment will be explained. When operating a normal electric blower, sparks are generated by the carbon brush 15.
occurs on the rotational direction side of the commutator 13. This is because when the commutator 13 rotates from a state in which one commutator piece 24 is electrically connected to the carbon brush 15 and the commutator piece 24 separates from the tip of the pusher, this commutator piece 24 and the carbon brush 1
This is because an arc is generated between the tip and the tip, resulting in a spark. Therefore, as shown in FIG. 2, forming carbon 16 made of a material with high resistivity on the side of the carbon brush 16 in the direction of rotation of the commutator 13 is very effective against sparks.
つまり、カーボンブラシ１５の中を流れる電流は、比抵
抗の高い部分２６にはほとんど流れず、比抵抗の小さい
方へ流れることになるので、比抵抗の高い部分のカーボ
ン１６の先端では、スパークが出にくくなる。この時の
比抵抗の高い部分の幅は性能に影響を及ぼさない程度に
する必要がある。In other words, the current flowing through the carbon brush 15 hardly flows into the part 26 with high resistivity, but instead flows into the part 26 with low resistivity, so that sparks are generated at the tip of the carbon 16 in the part with high resistivity. It becomes difficult to come out. At this time, the width of the high resistivity portion must be set to such an extent that it does not affect performance.
発明の効果
このように本発明は、比抵抗の小さい力〜ポンブラシを
使用する場合、電動機の運転時において、スパークの発
生を防ぐことができる。電流の多く流れる電動機でも使
用することができる。Effects of the Invention As described above, the present invention can prevent the generation of sparks during operation of the electric motor when a force-pump brush with low specific resistance is used. It can also be used with electric motors that draw a lot of current.
第１図は本発明の一実施例を示す電動送風機の一部欠截
側面図、第２図はカーボンブラシ部の断面図、第３図は
従来例の電動送風機の一部欠截側面図である。
６・・・・・・本体、９・・・・・・界磁、１３・・・
・・・整流子、１４・・山・電機子、１５・旧・・カー
ボンブラシ、２４・・・・・・整流子片、２６・・・・
・・カーボンブラシ（比抵抗の高い部分）。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名Ｇ−
一一ぶ外
ａ ２ 図
ｚ５−一一力−エ）ブラタ（に１崎充４．
ν４υ第３図
（−一一電動嵯を截刹各
２−厚祷
３−０−瞥虎シ
４− ７磯と
５−−一乃一玉゛°ンフ゛ラリFig. 1 is a partially cutaway side view of an electric blower showing an embodiment of the present invention, Fig. 2 is a sectional view of a carbon brush portion, and Fig. 3 is a partially cutaway side view of a conventional electric blower. be. 6...Main body, 9...Field, 13...
... Commutator, 14. Mountain armature, 15. Old carbon brush, 24. Commutator piece, 26.
...Carbon brush (part with high specific resistance). Name of agent: Patent attorney Toshio Nakao and one other person G-
11b outside a 2 figure
z5-Ichiriki-e) Burata (Niichizaki Mitsuru 4.
ν4υFig.
Claims (1)
持つ円筒形の整流子を固定した電機子と、前記整流子片
に垂直に接している１対のカーボンブラシとを具備し、
上記カーボンブラシの比抵抗は前記整流子の回転方向側
を高く設定した整流子電動機。It is equipped with a field fixed to the main body, an armature having a cylindrical commutator having a plurality of commutator pieces fixed to the drive shaft, and a pair of carbon brushes in contact with the commutator pieces perpendicularly. death,
A commutator motor in which the specific resistance of the carbon brush is set higher on the rotation direction side of the commutator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20922185A JPS6271453A (en) | 1985-09-20 | 1985-09-20 | Commutator motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20922185A JPS6271453A (en) | 1985-09-20 | 1985-09-20 | Commutator motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6271453A true JPS6271453A (en) | 1987-04-02 |
Family
ID=16569352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20922185A Pending JPS6271453A (en) | 1985-09-20 | 1985-09-20 | Commutator motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6271453A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05234654A (en) * | 1991-04-25 | 1993-09-10 | Tokyo Electric Co Ltd | Brush and commutator motor |
| US5561811A (en) * | 1992-11-10 | 1996-10-01 | Xerox Corporation | Method and apparatus for per-user customization of applications shared by a plurality of users on a single display |
| FR2838574A1 (en) * | 2002-04-12 | 2003-10-17 | Mitsubishi Electric Corp | ROTARY ELECTRIC MACHINE |
-
1985
- 1985-09-20 JP JP20922185A patent/JPS6271453A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05234654A (en) * | 1991-04-25 | 1993-09-10 | Tokyo Electric Co Ltd | Brush and commutator motor |
| US5561811A (en) * | 1992-11-10 | 1996-10-01 | Xerox Corporation | Method and apparatus for per-user customization of applications shared by a plurality of users on a single display |
| FR2838574A1 (en) * | 2002-04-12 | 2003-10-17 | Mitsubishi Electric Corp | ROTARY ELECTRIC MACHINE |
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