JPH0434619B2 - - Google Patents

Info

Publication number
JPH0434619B2
JPH0434619B2 JP12204185A JP12204185A JPH0434619B2 JP H0434619 B2 JPH0434619 B2 JP H0434619B2 JP 12204185 A JP12204185 A JP 12204185A JP 12204185 A JP12204185 A JP 12204185A JP H0434619 B2 JPH0434619 B2 JP H0434619B2
Authority
JP
Japan
Prior art keywords
commutator
wear
oxidation
rpm
present
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
Application number
JP12204185A
Other languages
Japanese (ja)
Other versions
JPS61279650A (en
Inventor
Akira Ueda
Kyokazu Kojima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tanaka Kikinzoku Kogyo KK
Original Assignee
Tanaka Kikinzoku Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tanaka Kikinzoku Kogyo KK filed Critical Tanaka Kikinzoku Kogyo KK
Priority to JP12204185A priority Critical patent/JPS61279650A/en
Publication of JPS61279650A publication Critical patent/JPS61279650A/en
Publication of JPH0434619B2 publication Critical patent/JPH0434619B2/ja
Granted legal-status Critical Current

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Description

【発明の詳細な説明】[Detailed description of the invention]

(産業上の利用分野) 本発明は、燃料噴射装置用モータ等のコンミテ
ータ用材料に関するものである。 (従来技術とその問題点) 従来、燃料噴射装置用モータ等のコンミテータ
用材料として、Ag0.02wt%、残部Cuより成る合
金材料が広く使用されているが、この合金材料か
ら成るコンミテータは2400rpm程度の回転では問
題は無いが、4000〜5000rpmの高速回転になる
と、急激に摩耗するという問題がある。 (発明の目的) 本発明は、上記問題を解決すべくなされたもの
であり、耐摩耗性に優れたコンミテータ用材料を
提供することを目的とするものである。 (発明の構成) 上記目的を達成するための本発明のコンミテー
タ用材料の1つは、Cu70〜90wt%、B0.1〜5wt
%、残部Agより成るものである。 本発明のコンミテータ用材料の他の1つは、
Cu70〜85wt%、Ni0.1〜10wt%、B0.1〜5wt%、
残部Agよりな成るものである。 斯かる本発明のコンミテータ用材料において、
Cu70〜90wt%とした理由は、摩耗を抑え乍ら導
電性を維持するためとコストの低減を図るため
で、70wt%未満ではコストの低減が少なく、
90wt%を超えると摩耗を減少できないからであ
る。B0.1〜5wt%とした理由は、コンミテータの
酸敗ガソリン中、メタノール等のガス雰囲気での
使用において、酸化を抑制するためで、0.1wt%
未満ではその効果が無く、5wt%超えると加工性
が悪くなり、しかも酸化抑制効果がそれ以上良く
なることが無いしかもコスト高となるからであ
る。Ni0.1〜10wt%とした理由は、より一層摩耗
を抑制するためで、0.1wt%未満では耐摩耗性の
向上が現れず、10wt%を超えると加工性と耐酸
化性が悪くなるからである。 (実施例) 本発明によるコンミテータ用材料の実施例を従
来例と共に説明する。 下記の表の左欄に示す成分組成の実施例1〜7
と従来例1のコンミテータ材料にて作つたコンミ
テータを燃料噴射装置用モータに取り付けて、メ
タノールのガス雰囲気中で2500rpm5000rpm、で
回転して、Ag−Cu90wt%より成る摺動接点と摺
動試験し、摩耗量を測定し、酸化の程度を検査し
た処、下記の右欄に示すような結果を得た。
(Industrial Application Field) The present invention relates to a material for a commutator such as a motor for a fuel injection device. (Prior art and its problems) Conventionally, an alloy material consisting of 0.02wt% Ag and the balance Cu has been widely used as a material for commutators such as motors for fuel injection devices, but a commutator made of this alloy material has a rotation speed of about 2400 rpm. There is no problem when rotating at 4,000 to 5,000 rpm, but there is a problem of rapid wear when rotating at high speeds of 4,000 to 5,000 rpm. (Object of the Invention) The present invention was made to solve the above problems, and an object of the present invention is to provide a commutator material having excellent wear resistance. (Structure of the Invention) One of the commutator materials of the present invention for achieving the above object is Cu70-90wt%, B0.1-5wt%
%, the balance consists of Ag. Another commutator material of the present invention is
Cu70~85wt%, Ni0.1~10wt%, B0.1~5wt%,
The remainder consists of Ag. In such a commutator material of the present invention,
The reason why Cu is set at 70 to 90wt% is to maintain conductivity while suppressing wear and to reduce costs.If it is less than 70wt%, the cost reduction is small.
This is because if it exceeds 90wt%, wear cannot be reduced. The reason for setting B0.1 to 5wt% is to suppress oxidation when used in rancid gasoline in a commutator or in a gas atmosphere such as methanol.
If it is less than 5 wt%, there is no effect, and if it exceeds 5 wt%, workability deteriorates, and the oxidation suppressing effect does not improve any further, and the cost increases. The reason for setting Ni to 0.1 to 10wt% is to further suppress wear; if it is less than 0.1wt%, no improvement in wear resistance will be seen, and if it exceeds 10wt%, workability and oxidation resistance will deteriorate. be. (Example) Examples of the commutator material according to the present invention will be described together with conventional examples. Examples 1 to 7 of the component composition shown in the left column of the table below
A commutator made from the commutator material of Conventional Example 1 was attached to a motor for a fuel injection device, rotated at 2500 rpm and 5000 rpm in a methanol gas atmosphere, and subjected to a sliding test with a sliding contact made of 90 wt% Ag-Cu. When the amount of wear was measured and the degree of oxidation was examined, the results shown in the right column below were obtained.

【表】 上記の表で明らかなように実施例1〜3のコン
ミテータは、従来例1のコンミテータに比し、
5000rpmの高速回転時の摩耗量が少なく、酸化の
程度も少ないことが判る。とりわけ実施例4〜7
のコンミテータは5000rpmの高速回転時の摩耗量
が極めて少なく、酸化の程度も実施例1〜3と同
等に少ないことが判る。 (発明の効果) 以上の説明で判るように本発明のコンミテータ
材料によれば、高速回転時も摩耗量が少なく、耐
摩耗性に優れた、しかも酸化性雰囲気中での使用
において酸化の程度が少なく、耐酸化性に優れた
コンミテータを得ることができるという効果があ
り、従来のコンミテータ材料にとつて代わること
のできる画期的なものといえる。
[Table] As is clear from the table above, the commutators of Examples 1 to 3 are different from the commutator of Conventional Example 1.
It can be seen that the amount of wear during high speed rotation of 5000 rpm is small, and the degree of oxidation is also small. Examples 4-7 among others
It can be seen that the amount of wear of the commutator during high speed rotation of 5000 rpm is extremely small, and the degree of oxidation is also as small as in Examples 1 to 3. (Effects of the Invention) As can be seen from the above explanation, the commutator material of the present invention has a small amount of wear even during high-speed rotation, has excellent wear resistance, and has a low degree of oxidation when used in an oxidizing atmosphere. It has the effect of making it possible to obtain a commutator with excellent oxidation resistance, and can be said to be an epoch-making material that can replace conventional commutator materials.

Claims (1)

【特許請求の範囲】 1 Cu70〜90wt%、B0.1〜5wt%、残部Agより
成るコンミテータ用材料。 2 Cu70〜85wt%、Ni0.1〜10wt%、B0.1〜5wt
%、残部Agより成るコンミテータ用材料。
[Claims] 1. A commutator material comprising 70 to 90 wt% Cu, 0.1 to 5 wt% B, and the balance Ag. 2 Cu70~85wt%, Ni0.1~10wt%, B0.1~5wt
%, the balance being Ag. Commutator material.
JP12204185A 1985-06-05 1985-06-05 Commutator material Granted JPS61279650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12204185A JPS61279650A (en) 1985-06-05 1985-06-05 Commutator material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12204185A JPS61279650A (en) 1985-06-05 1985-06-05 Commutator material

Publications (2)

Publication Number Publication Date
JPS61279650A JPS61279650A (en) 1986-12-10
JPH0434619B2 true JPH0434619B2 (en) 1992-06-08

Family

ID=14826137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12204185A Granted JPS61279650A (en) 1985-06-05 1985-06-05 Commutator material

Country Status (1)

Country Link
JP (1) JPS61279650A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2650328B2 (en) * 1988-06-22 1997-09-03 石川島播磨重工業株式会社 Oxygen incombustible alloy for oxygen equipment

Also Published As

Publication number Publication date
JPS61279650A (en) 1986-12-10

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