JPH0666146B2 - Electric brush for use in liquid fuel - Google Patents
Electric brush for use in liquid fuelInfo
- Publication number
- JPH0666146B2 JPH0666146B2 JP62050959A JP5095987A JPH0666146B2 JP H0666146 B2 JPH0666146 B2 JP H0666146B2 JP 62050959 A JP62050959 A JP 62050959A JP 5095987 A JP5095987 A JP 5095987A JP H0666146 B2 JPH0666146 B2 JP H0666146B2
- Authority
- JP
- Japan
- Prior art keywords
- electric brush
- liquid fuel
- weight
- carbon fiber
- parts
- 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
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- Motor Or Generator Current Collectors (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明はモーターや発電機等の回転電機に使用する電
刷子に関し、特に液体燃料中に浸漬して使用する電刷子
の改良に関する。Description: TECHNICAL FIELD The present invention relates to an electric brush used in a rotating electric machine such as a motor or a generator, and more particularly to improvement of an electric brush immersed in a liquid fuel for use.
［従来技術］ 液体燃料中に電刷子を浸漬して用いることが行なわれて
いる。例えば、自動車エンジンの燃料噴射ポンプでは、
ポンプとその駆動用モーターを燃料タンクに浸して使用
している。この場合、モーター中の電刷子も液体燃料に
浸漬して使用される。[Prior Art] An electric brush is immersed in a liquid fuel for use. For example, in a fuel injection pump for an automobile engine,
The pump and its driving motor are immersed in the fuel tank. In this case, the electric brush in the motor is also used by immersing it in the liquid fuel.
ここで発明者らは、電刷子を空気中で使用する場合と、
液体燃料中で使用する場合とでは、電刷子の摩耗特性が
異なることを見出した。即ち黒鉛質のものも金属黒鉛質
のものも、液体燃料中では著しく摩耗するのである。Here, the inventors used the electric brush in the air,
It has been found that the wear characteristics of the electric brush are different when used in liquid fuel. That is, both graphite and metallic graphite are significantly worn in the liquid fuel.
［発明の目的］ この発明は、液体燃料中で使用するための電刷子の耐摩
耗特性を改善すること、及びこの場合の摺動相手の摩耗
を抑制することを目的とする。[Object of the Invention] The present invention aims to improve the wear resistance of an electric brush for use in a liquid fuel, and to suppress the wear of a sliding partner in this case.
［発明の構成］ この発明は液体燃料中で使用するための電刷子におい
て、電刷子に長さ３mm以下の炭素繊維を、電刷子本体の
重量に対し１重量％超〜３５重量％未満含有せしめたこ
とを特徴とする。ここに電刷子本体とは、電刷子中の黒
鉛や黒鉛と金属粉等の混合物の成型体を意味し、電刷子
からピグテールやリン青銅板等の取り付け構造部を除い
た部分である。ここに電刷子は黒鉛質のものあるいは金
属黒鉛質のもののいずれをも用い得る。[Constitution of the Invention] The present invention relates to an electric brush for use in a liquid fuel, wherein the electric brush contains carbon fibers having a length of 3 mm or less and more than 1% by weight to less than 35% by weight based on the weight of the main body of the electric brush. It is characterized by that. Here, the main body of the electric brush means a molded body of graphite or a mixture of graphite and metal powder in the electric brush, and is a portion excluding a mounting structure portion such as a pigtail or a phosphor bronze plate from the electric brush. Here, the electrobrush may be either a graphite material or a metal graphite material.
電刷子の形状・構造は既に周知であり、適宜のものを用
い得る。また電刷子に用いる黒鉛は天然黒鉛、あるいは
人造黒鉛のいずれでも良く、その製法や灰分量等は任意
である。電刷子に金属を加える場合、例えば銅や銀、
錫、鉛等を加える。更に電刷子には、二硫化モリブデン
や二硫化タングステン等の固体潤滑材を添加しても良
い。The shape and structure of the electric brush are already known, and an appropriate one can be used. Further, the graphite used for the electric brush may be either natural graphite or artificial graphite, and the manufacturing method and the amount of ash are arbitrary. When adding metal to an electric brush, for example, copper or silver,
Add tin, lead, etc. Further, a solid lubricant such as molybdenum disulfide or tungsten disulfide may be added to the electric brush.
炭素繊維は、ポリアクリロニトリル等の繊維原料を用い
たものや、ピッチを原料としたもの等の適宜のものを用
い得る。炭素繊維の長さは３mm以下とし、好ましくは１
mm以下が良く、特に好ましくは0.1〜１mmの長さが最適
である。３mm以上の長さでは電刷子の製造時に黒鉛や銅
等の金属粉との混合が困難で、分散が充分に行なわれな
い。As the carbon fiber, an appropriate one such as one using a fiber raw material such as polyacrylonitrile or one using pitch as a raw material can be used. The length of the carbon fiber should be 3 mm or less, preferably 1
The length is preferably not more than mm, and particularly preferably, the length is 0.1 to 1 mm. If the length is 3 mm or more, it is difficult to mix it with a metal powder such as graphite or copper during the production of an electric brush, and the dispersion is not sufficiently performed.
炭素繊維の添加量は特に限定するものではないが、電刷
子全体に対する添加量で１〜３５重量％が好ましく、特
に好ましくは１〜２０重量％とする。１％以下では摩耗
性の改善に関する効果に乏しく、３５％以上添加しても
効果は飽和し、それい以上ではむしろモーター出力を低
下させる場合が有る。The amount of carbon fiber added is not particularly limited, but is preferably 1 to 35% by weight, and particularly preferably 1 to 20% by weight, based on the total amount of the electric brush. If it is 1% or less, the effect of improving wear resistance is poor, and if it is added in an amount of 35% or more, the effect is saturated, and if it is more than 50%, the motor output may be rather lowered.
本発明の電刷子の製造には、例えばフェノール樹脂等の
合成樹脂からなる結合材で予め処理した黒鉛粉と炭素繊
維とを混合し、あるいは黒鉛粉と炭素繊維とを混合した
後に合成樹脂等の結合材で処理し、これを適宜の金型に
充てんしてプレスし成型し、焼成して電刷子とすれば良
い。金属黒鉛質電刷子の場合も同様である。In the production of the electric brush of the present invention, for example, graphite powder and carbon fiber pretreated with a binder made of a synthetic resin such as phenol resin are mixed, or the graphite powder and the carbon fiber are mixed and then a synthetic resin or the like is mixed. It may be treated with a binder, filled in an appropriate mold, pressed, molded, and fired to obtain an electric brush. The same applies to the case of a metal-graphite electric brush.
［実施例］ 実施例1,2 天然黒鉛粉を予めフェノール樹脂ワニスで処理したもの
１００重量部（以下単に「部」とする。）に、それぞれ
長さ0.3mmの炭素繊維を２部（実施例１）あるいは３０
部（実施例２）加え、充分に混合した後、プレス成型し
７００℃で焼成して電刷子とした。なお天然黒鉛粉は通
常の灰分0.8重量％程度のものを用い、炭素繊維には東
レ株式会社製のポリアクリロニトリル系の“トレカＭＬ
Ｄ３００”を用いた。[Examples] Examples 1 and 2 100 parts by weight of natural graphite powder previously treated with a phenol resin varnish (hereinafter simply referred to as "parts") are each provided with 2 parts of carbon fiber having a length of 0.3 mm (Examples). 1) or 30
Parts (Example 2) were added, and after mixing sufficiently, they were press-molded and baked at 700 ° C. to obtain an electric brush. The natural graphite powder used is a normal ash content of about 0.8% by weight, and the carbon fiber is polyacrylonitrile-based "Torayca ML" manufactured by Toray Industries, Inc.
D300 ″ was used.
実施例３〜６ 天然黒鉛粉１００部に長さ0.3mmの炭素繊維（トレカＭ
ＬＤ３００）を加えて混合し、フェノール樹脂ワニスで
処理した。処理後の粉末中の炭素繊維含有量は4.8重量
％（実施例３）、9.1重量％（実施例４）、16.7重量％
（実施例５）、23.1重量％（実施例６）の４者である。
得られた粉末７０部と銅粉３０部とを混合し、実施例１
と同様にして電刷子を得た。Examples 3 to 6 Carbon fiber having a length of 0.3 mm was added to 100 parts of natural graphite powder (Torayca M).
LD300) was added and mixed, and treated with a phenol resin varnish. The content of carbon fiber in the powder after the treatment was 4.8% by weight (Example 3), 9.1% by weight (Example 4), 16.7% by weight.
(Example 5), 23.1% by weight (Example 6).
70 parts of the obtained powder and 30 parts of copper powder were mixed, and Example 1
An electric brush was obtained in the same manner as.
実施例７ 銅粉３０部と長さ0.7mmの炭素繊維（呉羽化学株式会社
製のピッチ系炭素繊維“クレカチョップＭ２０７Ｓ”）
１０部と予めフェノール樹脂ワニスで処理した天然黒鉛
粉６０部とを混合し、同様にして電刷子を得た。Example 7 30 parts of copper powder and a carbon fiber having a length of 0.7 mm (pitch-based carbon fiber “Kurekachop M207S” manufactured by Kureha Chemical Co., Ltd.)
10 parts and 60 parts of natural graphite powder previously treated with a phenol resin varnish were mixed, and an electric brush was obtained in the same manner.
実施例８ 長さ0.13mmの炭素繊維（呉羽化学株式会社製の“クレカ
チョップＭ１０１Ｓ”）と天然黒鉛粉をフェノール樹脂
ワニスで処理した。得られた粉末中の炭素繊維含有量は
42.9重量％である。この粉末７０部を銅粉３０部と混合
し、同様にして電刷子を得た。Example 8 A carbon fiber having a length of 0.13 mm (“Kureka Chop M101S” manufactured by Kureha Chemical Co., Ltd.) and natural graphite powder were treated with a phenol resin varnish. The content of carbon fiber in the obtained powder is
It is 42.9% by weight. 70 parts of this powder was mixed with 30 parts of copper powder to obtain an electric brush in the same manner.
実施例９ 灰分量0.1重量％以下の市販人造黒鉛ＫＳ１５、（ロン
ザ社製“ＫＳ１５”は商品名）、１００部に長さ0.3mm
の炭素繊維（トレカＭＬＤ３００）を加えて混合し、フ
ェノール樹脂ワニスで処理して炭素繊維含有量16.7重量
％の粉末を得た。この粉末７０部と銅粉３０部を混合
し、実施例１と同様にして電刷子を得た。Example 9 Commercially available artificial graphite KS15 having an ash content of 0.1% by weight or less (“KS15” manufactured by Lonza Co., Ltd. is a trade name), and 100 parts has a length of 0.3 mm
Carbon fiber (Torayca MLD300) was added and mixed, and treated with a phenol resin varnish to obtain a powder having a carbon fiber content of 16.7% by weight. 70 parts of this powder and 30 parts of copper powder were mixed, and an electric brush was obtained in the same manner as in Example 1.
比較例１ 天然黒鉛粉をフェノール樹脂ワニスで処理し、プレス成
型し、７００℃で焼成して電刷子を得た。Comparative Example 1 Natural graphite powder was treated with a phenol resin varnish, press-molded, and fired at 700 ° C. to obtain an electric brush.
比較例２ 銅粉３０部と予めフェノール樹脂ワニスで処理した黒鉛
粉７０部とを混合し、比較例１と同様にして電刷子を得
た。Comparative Example 2 30 parts of copper powder and 70 parts of graphite powder previously treated with a phenol resin varnish were mixed, and an electric brush was obtained in the same manner as in Comparative Example 1.
なお電刷子の形状は全て同一である。The shapes of the electric brushes are all the same.
得られた電刷子を自動車のガソリン噴射用ポンプのモー
ターに組付け、電刷子がガソリン中に浸漬した状態で摩
耗特性を評価した。評価は、モーターへの印加電圧を直
流１２Ｖ、モーター電流を4.5Ａとし、５００時間駆動
した後の電刷子や整流子の摩耗量から行った。結果を表
に示す。The obtained electric brush was attached to a motor of a gasoline injection pump of an automobile, and the abrasion characteristics were evaluated while the electric brush was immersed in gasoline. The evaluation was performed based on the amount of abrasion of the electric brush and commutator after driving for 500 hours with the voltage applied to the motor being DC 12V and the motor current being 4.5A. The results are shown in the table.
表中炭素繊維量は電刷子の全体に対する炭素繊維の量を
重量％単位で現し、モーター出力の目安としてポンプ吐
出量を示した。In the table, the amount of carbon fibers represents the amount of carbon fibers with respect to the entire electric brush in the unit of weight%, and the pump discharge amount is shown as a guide for the motor output.
表から明らかな様に、炭素繊維の添加により電刷子と整
流子双方の摩耗を抑制することができる。なおここでは
ガソリン用の燃料噴射ポンプに付いて実施例を示した
が、軽油等の他の液体燃中で使用する場合も同様である
ことは明らかである。As is apparent from the table, the addition of carbon fiber can suppress the abrasion of both the electric brush and the commutator. Although the embodiment is shown here for a fuel injection pump for gasoline, it is obvious that the same applies when used in other liquid fuel such as light oil.
［発明の効果］ この発明では、液体燃料中で使用する電刷子に付いて、
電刷子と整流子やコンミュテーター等の摺動相手側双方
の摩耗を抑制できる。 [Advantages of the Invention] In the present invention, with respect to the electric brush used in the liquid fuel,
It is possible to suppress the wear of both the electric brush and the sliding partner such as the commutator and commutator.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大谷 孝由 三重県松阪市櫛田町1105番地の２ 富士化 工株式会社内 (72)発明者 池田 光男 三重県松阪市櫛田町1105番地の２ 富士化 工株式会社内 (56)参考文献 特開 昭57−193003（ＪＰ，Ａ) 特開 昭61−158681（ＪＰ，Ａ) 特公 平３−65632（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Otani No.2, 1105 Kushidacho, Matsusaka City, Mie Prefecture Fuji Kako Co., Ltd. (72) Inventor Mitsuo Ikeda No. 2 No. 1105, Kushidacho, Matsusaka City, Mie Prefecture Kou Co., Ltd. (56) Reference JP-A-57-193003 (JP, A) JP-A-61-158681 (JP, A) JP-B-3-65632 (JP, B2)
Claims (1)
で使用するための電刷子において、 長さ３mm以下の炭素繊維を、電刷子本体の重量に対し１
重量％超〜３５重量％未満含有せしめたことを特徴とす
る、液体燃料中で使用するための電刷子。1. An electric brush of graphite or metal graphite for use in a liquid fuel, wherein carbon fiber having a length of 3 mm or less is used for 1 weight of the main body of the electric brush.
An electrobrush for use in a liquid fuel, characterized in that it contains more than 35% and less than 35% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62050959A JPH0666146B2 (en) | 1987-03-05 | 1987-03-05 | Electric brush for use in liquid fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62050959A JPH0666146B2 (en) | 1987-03-05 | 1987-03-05 | Electric brush for use in liquid fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63218179A JPS63218179A (en) | 1988-09-12 |
| JPH0666146B2 true JPH0666146B2 (en) | 1994-08-24 |
Family
ID=12873356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62050959A Expired - Lifetime JPH0666146B2 (en) | 1987-03-05 | 1987-03-05 | Electric brush for use in liquid fuel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0666146B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022024682A1 (en) * | 2020-07-31 | 2022-02-03 | トライス株式会社 | Carbon grounding brush |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193003A (en) * | 1981-04-13 | 1982-11-27 | Hitachi Chemical Co Ltd | Miniature variable resistor slide contact |
| JPH0612674B2 (en) * | 1984-12-28 | 1994-02-16 | 日立化成工業株式会社 | Electric brush |
-
1987
- 1987-03-05 JP JP62050959A patent/JPH0666146B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63218179A (en) | 1988-09-12 |
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