JPH07135749A - Electric machine brush - Google Patents
Electric machine brushInfo
- Publication number
- JPH07135749A JPH07135749A JP5279411A JP27941193A JPH07135749A JP H07135749 A JPH07135749 A JP H07135749A JP 5279411 A JP5279411 A JP 5279411A JP 27941193 A JP27941193 A JP 27941193A JP H07135749 A JPH07135749 A JP H07135749A
- Authority
- JP
- Japan
- Prior art keywords
- brush
- graphite
- mounting portion
- pigtail
- pig
- 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.)
- Granted
Links
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、発電機、或いは電動機
などの回転電機に使用される電機ブラシに関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric brush used in a rotating electric machine such as a generator or an electric motor.
【０００２】[0002]
【従来の技術】従来より電機ブラシは、導電性を得るこ
とを目的とした金属粉（主に銅粉が使用されてきてい
る）と、潤滑性を得ることを目的とした黒鉛粉と、該黒
鉛粉を結合することを目的とした結合剤（主に有機物が
使用されてきている）とからなる原材料で構成されて焼
結された金属体であるものが広く普及してきている。2. Description of the Related Art Conventionally, electric brushes include metal powder (mainly copper powder has been used) for obtaining conductivity, and graphite powder for obtaining lubricity. BACKGROUND ART A metal body, which is composed of a raw material composed of a binder (mainly an organic substance has been used) for the purpose of binding graphite powder and is sintered, has become widespread.
【０００３】しかしながら、上記の如き構成から成る前
記電機ブラシは、前記導電性を向上させるために前記金
属粉を増量すると耐磨耗性に悪影響を及ぼす。そのため
に、前記耐磨耗性を維持しつつ、即ち寿命を維持しつつ
前記導電性を向上させることは、極めて困難な状況にあ
った。本発明者は、上記の如き状況を鑑みて鋭意研究を
積み重ね、前記導電性と前記寿命の向上を図るための技
術を提案してきている（特願平３−１４２１７１号）。
該提案は、多孔質金属体と、該金属体の多孔質部分をな
す空隙部分に充填された黒鉛とからなる電機ブラシの構
成と、該電機ブラシの製造方法を開示したものである
が、上記の如き構成によって、即ち、金属自体を、連続
した構造を有した発泡金属とすることで、前記導電性を
向上し、さらに上記の従来の構成よりも前記金属粉の含
有量の低下が図れるために寿命を向上することができる
技術を開示したものである。However, in the electric brush having the above-mentioned structure, if the amount of the metal powder is increased to improve the conductivity, the abrasion resistance is adversely affected. Therefore, it has been extremely difficult to improve the conductivity while maintaining the wear resistance, that is, maintaining the life. The present inventor has accumulated earnest studies in view of the above situation, and has proposed a technique for improving the conductivity and the life (Japanese Patent Application No. 3-142171).
The proposal discloses a structure of an electric brush made of a porous metal body and graphite filled in a void portion forming a porous portion of the metal body, and a method for manufacturing the electric brush. With such a structure, that is, by making the metal itself a foam metal having a continuous structure, it is possible to improve the conductivity and further reduce the content of the metal powder as compared with the conventional structure described above. It discloses a technique capable of improving the life.
【０００４】ところが、前記電機ブラシに電流を伝達す
るために、電圧が印加される端子電極に結線されるとと
もに前記電機ブラシに結合して備えられているピグテ−
ルと、前記電機ブラシとの間の電気抵抗が大きくなるた
めに、電動機などの性能である回転数が低下してしまう
という問題点が顕在化してきている。However, in order to transmit an electric current to the electric brush, a pigtail which is connected to a terminal electrode to which a voltage is applied and is also connected to the electric brush.
However, since the electric resistance between the electric brush and the electric brush is increased, the problem that the rotational speed, which is the performance of the electric motor, is reduced.
【０００５】[0005]
【発明が解決しようとする課題】したがって、本発明は
上記の如き問題点、即ち回転数の低下を引き起こすこと
のない電機ブラシを提供することを課題とする。SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide an electric brush which does not cause the above-mentioned problems, that is, a decrease in the number of revolutions.
【０００６】[0006]
【課題を解決するための手段】そのために、請求項１
は、多孔質であり、しかも導電性を有した多孔質金属
体、及び前記多孔質を形成する空隙部に充填された黒鉛
から成るブラシと、多孔質であり、しかも導電性を有し
た多孔質金属体、及び前記多孔質を形成する空隙部に充
填された黒鉛から成る取り付け部、或いは、多孔質であ
り、しかも導電性を有した多孔質金属体から成る取り付
け部のいずれかと、前記取り付け部に結合された導電性
のピグテ−ルとから構成され、前記取り付け部の金属の
含有率が前記ブラシの金属含有率よりも大きく、更に前
記ブラシと前記取り付け部とを一体化結合した構成とす
ることによって課題を解決するものである。For that purpose, the first aspect is set forth.
Is a porous metal body that is porous and has conductivity, and a brush made of graphite filled in the voids that form the porosity; and a porous body that is also conductive. Either the metal body and the attachment portion made of graphite filled in the voids forming the porosity, or the attachment portion made of a porous metal body that is porous and has conductivity, and the attachment portion. And a conductive pigtail bonded to the brush, the metal content of the mounting portion is higher than the metal content of the brush, and the brush and the mounting portion are integrally coupled. This is to solve the problem.
【０００７】又、上記の如き電機ブラシを得るために、
請求項２は、黒鉛と結合剤と溶媒とからなるペ−スト状
物をブラシの多孔質金属体の空隙部に充填したものと、
黒鉛と結合剤と溶媒とからなるペ−スト状物を取り付け
部の多孔質金属体の空隙部に充填したものか、若しく
は、黒鉛と結合剤と溶媒とからなるペ−スト状物を前記
取り付け部の多孔質金属体の空隙部に充填していないも
のかのいずれかと、ピグテ−ルとを同時に加圧成形して
一体化し、その後焼結することにより、前記取り付け部
の金属の含有率が前記ブラシの金属含有率よりも大きく
なるように製造するものである。In order to obtain the electric brush as described above,
According to a second aspect of the present invention, a paste-like material comprising graphite, a binder and a solvent is filled in the voids of the porous metal body of the brush.
A paste-like material composed of graphite, a binder and a solvent is filled in the voids of the porous metal body of the mounting portion, or a paste-like material composed of graphite, a binder and a solvent is attached. Part of the porous metal body which is not filled with voids, and pigtail are simultaneously pressure-molded and integrated, and then sintered, so that the metal content of the mounting portion is The brush is manufactured to have a metal content higher than that of the brush.
【０００８】[0008]
【作用】請求項１により、前記ピグテ−ルを結合する前
記取り付け部を設け、更に前記取り付け部の金属の含有
率を、前記ブラシの金属含有率よりも大きな値としたこ
とから、前記ピグテ−ルと前記取り付け部との間の電気
抵抗を低減することが出来るようになる。According to the present invention, the mounting portion for connecting the pigtail is provided, and the metal content of the mounting portion is set to a value larger than the metal content of the brush. It becomes possible to reduce the electrical resistance between the cable and the mounting portion.
【０００９】請求項２により、金属含有率の異なった前
記ブラシと前記取り付け部を一体化できる。According to the second aspect, the brush and the mounting portion having different metal contents can be integrated.
【００１０】[0010]
【発明の効果】上記作用により、請求項１では、前記ピ
グテ−ルと前記取り付け部との間の電気抵抗を低減する
ことが可能となったことで、回転数の低下を引き起こす
ことのない電機ブラシ構成を提供することができ、ま
た、請求項２で前記電機ブラシを供給する製造方法を提
供することができる。As described above, according to the first aspect of the present invention, the electric resistance between the pigtail and the mounting portion can be reduced. A brush structure can be provided, and a manufacturing method for supplying the electric brush can be provided in claim 2.
【００１１】[0011]
（実施例１）以下、本発明を具体的な実施例を記した図
でもって説明する。図１は、本発明の一実施例である電
機ブラシ１を電動機に組付けた状態を示す斜視図であ
る。図において、前記電機ブラシ１は、直方体形状であ
り、図示されていないスプリングによってコンミュテ−
タ５に対して押しつけられて配置される。前記電機ブラ
シ１は、ブラシ２と取り付け部３とピグテ−ルとから一
体化されて構成され、そして前記ブラシ２は、前記コン
ミュテ−タ５の回転に伴い前記コンミュテ−タ５の表面
を摺動しつつ、該コンミュテ−タ５とピグテ−ル４との
導通状態を保持している。(Embodiment 1) Hereinafter, the present invention will be described with reference to the drawings in which concrete embodiments are described. FIG. 1 is a perspective view showing a state in which an electric brush 1 according to an embodiment of the present invention is assembled to an electric motor. In the figure, the electric brush 1 has a rectangular parallelepiped shape, and is composed by a spring (not shown).
It is pressed against the printer 5 and arranged. The electric brush 1 is configured integrally with a brush 2, a mounting portion 3 and a pigtail, and the brush 2 slides on the surface of the commutator 5 as the commutator 5 rotates. At the same time, the electrical connection between the computer 5 and the pigtail 4 is maintained.
【００１２】前記ブラシ２は、金属が３次元に連なった
多孔質金属体２１である発泡金属（例えば、住友電工
（株）製セルメット）の空隙部２３に後述の処理黒鉛２
２を備えており、また前記取り付け部３も多孔質金属体
３１である発泡金属（例えば、住友電工（株）製セルメ
ット）の空隙部３３に後述の処理黒鉛３２を備えたもの
である。そして、銅線からなる前記ピグテ−ル４は前記
ピグテ−ル取り付け穴５に固定されて備えられている。The brush 2 has a treated graphite 2 which will be described later in a void portion 23 of a foam metal (for example, Celmet manufactured by Sumitomo Electric Industries, Ltd.) which is a porous metal body 21 in which metals are three-dimensionally connected.
2, and the attachment portion 3 is also provided with a treated graphite 32, which will be described later, in a void portion 33 of a foam metal (for example, Celmet manufactured by Sumitomo Electric Industries, Ltd.) which is the porous metal body 31. The pigtail 4 made of copper wire is fixedly provided in the pigtail mounting hole 5.
【００１３】次に前記電機ブラシ１の製造方法について
説明する。黒鉛粉末（日本黒鉛製：ＣＢ１５０）９５重
量％と結合剤（住友デュレズ（株）製フェノ−ル217K）
５重量％からなる混合物１００％に対して、外からエタ
ノ−ル１５重量％を加えて混合し、その後前記エタノ−
ルを揮発させて前記混合物を乾燥した。その後、前記混
合物を粉砕し、又篩分級することによって整粒し、顆粒
状物とした処理黒鉛を作製した。次いで、前記処理黒鉛
に対してエタノ−ル６０重量％を加えて混練することに
よってペ−スト状黒鉛を作製した。そして、該ペ−スト
状黒鉛をエア−ガンによって、前記ブラシ２用及び前記
取り付け部３用の各々の前記発泡金属に吹きつけて、該
発泡金属の前記空隙部に充填した。その後、再びエタノ
−ルを揮発させて以下に記すような成形を行った。Next, a method of manufacturing the electric brush 1 will be described. Graphite powder (Nippon Graphite: CB150) 95% by weight and binder (Sumitomo Dures Co., Ltd. phenol 217K)
To 100% of the mixture consisting of 5% by weight, 15% by weight of ethanol was added from the outside and mixed, and then the above-mentioned ethanol was added.
And the mixture was dried. Then, the mixture was crushed and sieved to classify the particles to prepare a treated graphite in the form of granules. Then, 60% by weight of ethanol was added to the treated graphite and kneaded to prepare a paste graphite. Then, the paste-like graphite was sprayed onto the foam metal for each of the brush 2 and the mounting portion 3 by an air gun to fill the voids of the foam metal. After that, the ethanol was volatilized again and molding was performed as described below.
【００１４】図２は、本実施例の前記電機ブラシ１の成
形工程を記したものである。前記の如きペ−スト状黒鉛
を充填した前記取り付け部３用発泡金属３ａを複数枚重
ねてダイ８内の下パンチ７ａ上に配置し、更にその横に
前記の如きペ−スト状黒鉛を充填した前記ブラシ２用発
泡金属２ａを複数枚重ねて配置した（図２(ア)）。次い
で、成形圧0.5Ton/ cm2 でもって仮成形をおこない（図
２(イ））、上パンチ７ｂを取り除いて、仮成形した取り
付け部３用発泡金属３ｂに前記ピグテ−ル４を備えるた
めのピグテ−ル取り付け穴５を設け、該穴５に前記ピグ
テ−ル４を差し込み（図２(ウ）），該ピグテ−ル４を外
部に取り出すための穴を備えた前記上パンチ７ｃの前記
穴から前記ピグテ−ルを引き出して設置して、成形圧3.
5Ton/ cm2 でもって本成形し（図２(エ））、前記ダイ８
から、一体化した本成形したブラシ２ｃと本成形した取
り付け部３ｃとを取り出して前記電機ブラシ１形状を得
た。そして、最後に750 ℃にて焼成を行い前記電機ブラ
シ１とした。尚、従来と同等の寿命を確保するために前
記ブラシ２の銅含有量を３２重量％とし（黒鉛含有量６
８重量％）、又、前記取り付け部３については、前記ピ
グテ−ル４と前記取り付け部３とのあいだに形成される
電気抵抗値のレベルを検討するために銅の含有量を種々
変化して作製した。FIG. 2 shows a molding process of the electric brush 1 of this embodiment. A plurality of the foamed metal 3a for the mounting portion 3 filled with the above-mentioned paste-like graphite are stacked and arranged on the lower punch 7a in the die 8, and the paste-like graphite as described above is filled next to it. A plurality of the foamed metal 2a for the brush 2 described above were arranged in an overlapping manner (FIG. 2A). Then, temporary forming is performed with a forming pressure of 0.5 Ton / cm 2 (FIG. 2 (a)), the upper punch 7b is removed, and the pigtail 4 is attached to the temporarily formed foam metal 3b for the mounting portion 3. A hole for mounting the pigtail 5 is provided, the pigtail 4 is inserted into the hole 5 (FIG. 2C), and the hole of the upper punch 7c is provided with a hole for taking out the pigtail 4 to the outside. Install the pigtail by pulling it out from the molding pressure 3.
Main forming with 5Ton / cm 2 (Fig. 2 (D)), the die 8
Then, the integrated main-molded brush 2c and the main-molded mounting portion 3c were taken out to obtain the shape of the electric brush 1. Finally, firing was performed at 750 ° C. to obtain the electric brush 1. The copper content of the brush 2 is set to 32% by weight (graphite content 6
8% by weight), and with respect to the mounting portion 3, the content of copper was variously changed in order to examine the level of the electric resistance value formed between the pigtail 4 and the mounting portion 3. It was made.
【００１５】次に評価結果について記す。前記ピグテ−
ル４の取り付けによる電気抵抗値は前記ピグテ−ル４と
前記ブラシ２とのあいだに１アンペアの電流を流すこと
によって発生する電圧降下を測定することによって求め
た。図３は、前記取り付け部３の銅含有量に対する前記
電圧降下のレベルをピグテ−ル取り付け抵抗として表し
たものであり、銅の含有量が増えるに連れてピグテ−ル
取り付け抵抗は低下する。このグラフから銅の含有量
が、４５重量％以上であればピグテ−ル取り付け抵抗は
従来レベルよりも小さくなり、発電機の回転数を向上で
きるようになる。尚、図中の符号は、ピグテ−ル取りつ
け抵抗の（平均値±標準偏差の３倍値）を表したもので
ある。更には、銅の含有量を７０重量％以上とすること
によってピグテ−ル取り付け抵抗をほぼ無視できる程度
にまで改善できる。Next, the evaluation results will be described. The pigtail
The electric resistance value due to the attachment of the cable 4 was determined by measuring the voltage drop generated by passing a current of 1 amp between the pigtail 4 and the brush 2. FIG. 3 shows the level of the voltage drop with respect to the copper content of the mounting portion 3 as the pigtail mounting resistance, and the pigtail mounting resistance decreases as the copper content increases. From this graph, when the copper content is 45% by weight or more, the pigtail mounting resistance becomes smaller than the conventional level, and the rotation speed of the generator can be improved. The reference numerals in the figure represent (the average value ± 3 times the standard deviation) of the pigtail mounting resistance. Furthermore, by setting the content of copper to 70% by weight or more, the pigtail mounting resistance can be improved to such an extent that it can be almost ignored.
【００１６】以上に記したように、前記電気ブラシ１
を、銅含有量が３２重量％以上で残部が黒鉛であるよう
な発泡金属、望ましくは銅含有量が４５重量％以上で残
部が黒鉛であるような発泡金属から構成された前記ブラ
シ２と、銅含有量が従来レベルである３２重量％程度で
残部が黒鉛であるような発泡金属から構成された前記取
りつけ部３と、前記取りつけ部に設けられた穴に固定さ
れた前記ピグテ−ルとから構成することによって、ピグ
テ−ル取り付け抵抗を従来レベルよりも小さくすること
ができ、電動機の回転数を向上できるようになる。これ
により回転数の低下を引き起こすことなく、しかも前記
ブラシ２の銅含有量を従来と同等にしていることから前
記寿命を従来よりも低減することのない電機ブラシの構
成と該ブラシの製造方法を提供することができる。As described above, the electric brush 1
A brush 2 composed of a foam metal having a copper content of 32% by weight or more and the balance being graphite, preferably a foam metal having a copper content of 45% by weight or more and the balance being graphite; From the mounting portion 3 made of a foam metal having a copper content of 32% by weight, which is a conventional level, and the balance being graphite, and the pigtail fixed to a hole provided in the mounting portion. By configuring, the pigtail mounting resistance can be made smaller than the conventional level, and the rotation speed of the electric motor can be improved. As a result, there is provided a structure of an electric brush which does not reduce the rotational speed, and moreover, the copper content of the brush 2 is made equal to the conventional one, so that the life of the brush is not reduced as compared with the conventional one, and a method for manufacturing the brush. Can be provided.
【００１７】また、上記実施例では銅の含有量の異なる
２つの発泡金属を用いたが、銅含有量が３２重量％以上
で残部がグラファイトになるような多孔質発泡金属のピ
グテ−ル取り付け部分をマスキングしたのちに、上記例
の如きペ−スト状黒鉛をエア−ガンによって、マスキン
グしてない発泡金属部分に吹きつけて、該発泡金属の前
記空隙部に充填し、その後、再びエタノ−ルを揮発させ
てから上記例に記したような成形を行って、焼結したも
のでも同様の効果が得られる。Further, although two foam metals having different copper contents are used in the above-mentioned embodiment, the pigtail mounting portion of the porous foam metal having a copper content of 32% by weight or more and the balance being graphite. After masking, the pasted graphite as in the above example was sprayed with an air gun onto the unmasked foam metal part to fill the voids of the foam metal, and then again with ethanol. It is possible to obtain the same effect even if the material is volatilized and then molded as described in the above example and sintered.
【００１８】また、上記の実施例では銅を例にとった
が、他の金属でも同様の効果が得られる。Although copper is used as an example in the above-mentioned embodiment, the same effect can be obtained with other metals.
【図１】本発明の電気ブラシを説明するための斜視図で
ある。FIG. 1 is a perspective view illustrating an electric brush of the present invention.
【図２】本発明の電気ブラシの成形工程を説明するため
の図である。・・・FIG. 2 is a diagram for explaining a molding process of the electric brush of the present invention. ...
【図３】本発明の電気ブラシのピグテ−ル取り付け抵抗
を表したグラフである。FIG. 3 is a graph showing a pigtail mounting resistance of the electric brush of the present invention.
１ 電気ブラシ ２ ブラシ ２１ 多孔質金属 ２２ 黒鉛 ２３ 空隙部 ２ａ ブラシ用発泡金属 ２ｂ 仮成形をしたブラシ用発泡金属 ２ｃ 本成形をしたブラシ用発泡金属 ３ 取り付け部 ３１ 多孔質金属 ３２ 黒鉛 ３３ 空隙部 ３ａ 取り付け部用発泡金属 ３ｂ 仮成形をした取り付け部用発泡金属 ３ｃ 本成形をした取り付け部用発泡金属 ４ ピグテ−ル ５ ピグテ−ル取り付け穴 ６ コンミュテ−タ ７ａ 下パンチ ７ｂ 上パンチ ８ ダイ 1 Electric Brush 2 Brush 21 Porous Metal 22 Graphite 23 Void 2a Foam Metal for Brush 2b Foam Metal for Temporary Brush 2c Foam Metal for Brush Formed Main 3 Attachment Part 31 Porous Metal 32 Graphite 33 Void 3a Foam metal for mounting part 3b Foam metal for mounting part that was preformed 3c Foam metal for mounting part that was fully molded 4 Pigtail 5 Pigtail mounting hole 6 Computer 7a Lower punch 7b Upper punch 8 Die
───────────────────────────────────────────────────── フロントページの続き (72)発明者 宮田 義雄 愛知県刈谷市昭和町１丁目１番地 日本電 装株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshio Miyata 1-1, Showa-cho, Kariya city, Aichi Prefecture Nihondenso Co., Ltd.
Claims (2)
孔質金属体、及び前記多孔質を形成する空隙部に充填さ
れた黒鉛から成るブラシと、多孔質であり、しかも導電
性を有した多孔質金属体、及び前記多孔質を形成する空
隙部に充填された黒鉛から成る取り付け部、或いは、多
孔質であり、しかも導電性を有した多孔質金属体から成
る取り付け部のいずれかと、前記取り付け部に結合され
た導電性のピグテ−ルとから構成され、前記取り付け部
の金属の含有率が前記ブラシの金属含有率よりも大き
く、更に前記ブラシと前記取り付け部とが一体化結合さ
れていることを特徴とする電機ブラシ。1. A porous metal body that is porous and has conductivity, and a brush made of graphite filled in the voids that form the pores, and a brush that is porous and has conductivity. A porous metal body, and a mounting part made of graphite filled in the voids forming the porosity, or a mounting part made of a porous metal body that is porous and has conductivity, And a conductive pigtail coupled to the mounting portion, wherein the metal content of the mounting portion is higher than the metal content of the brush, and the brush and the mounting portion are integrally coupled. An electric brush that is characterized by
状物をブラシの多孔質金属体の空隙部に充填したもの
と、黒鉛と結合剤と溶媒とからなるペ−スト状物を取り
付け部の多孔質金属体の空隙部に充填したものか、若し
くは、黒鉛と結合剤と溶媒とからなるペ−スト状物を前
記取り付け部の多孔質金属体の空隙部に充填していない
ものかのいずれかと、ピグテ−ルとを同時に加圧成形し
て一体化し、その後焼結することにより、前記取り付け
部の金属の含有率が前記ブラシの金属含有率よりも大き
いことを特徴とする電機ブラシの製造方法。2. A paste-like material comprising graphite, a binder and a solvent, which is filled in a void portion of a porous metal body of a brush, and a paste-like material comprising graphite, a binder and a solvent. What is filled in the voids of the porous metal body of the mounting portion, or the paste-like material consisting of graphite, binder and solvent is not filled in the voids of the porous metal body of the mounting portion. And a pigtail are simultaneously pressure-molded to be integrated, and then sintered, so that the metal content of the mounting portion is higher than the metal content of the brush. Brush manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27941193A JP3146806B2 (en) | 1993-11-09 | 1993-11-09 | Electric brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27941193A JP3146806B2 (en) | 1993-11-09 | 1993-11-09 | Electric brush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07135749A true JPH07135749A (en) | 1995-05-23 |
| JP3146806B2 JP3146806B2 (en) | 2001-03-19 |
Family
ID=17610726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27941193A Expired - Fee Related JP3146806B2 (en) | 1993-11-09 | 1993-11-09 | Electric brush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3146806B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1104050A1 (en) * | 1999-11-28 | 2001-05-30 | M.E. Steinemann & Co. AG | Electrically conductive contact piece, material for and vehicle provided with such contact piece |
| GB2443808A (en) * | 2006-11-17 | 2008-05-21 | Johnson Electric Sa | Moulded carbon brush |
| JP2009148034A (en) * | 2007-12-12 | 2009-07-02 | Denso Corp | Brush for dynamo-electric machine, and dynamo-electric machine |
-
1993
- 1993-11-09 JP JP27941193A patent/JP3146806B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1104050A1 (en) * | 1999-11-28 | 2001-05-30 | M.E. Steinemann & Co. AG | Electrically conductive contact piece, material for and vehicle provided with such contact piece |
| GB2443808A (en) * | 2006-11-17 | 2008-05-21 | Johnson Electric Sa | Moulded carbon brush |
| JP2009148034A (en) * | 2007-12-12 | 2009-07-02 | Denso Corp | Brush for dynamo-electric machine, and dynamo-electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3146806B2 (en) | 2001-03-19 |
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|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20001205 |
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| LAPS | Cancellation because of no payment of annual fees |