JPH057808B2

JPH057808B2 -

Info

Publication number: JPH057808B2
Application number: JP59090768A
Authority: JP
Inventors: Susumu Fujishima
Original assignee: Tanaka Precious Metal Technologies Co Ltd
Current assignee: Tanaka Precious Metal Technologies Co Ltd
Priority date: 1984-05-07
Filing date: 1984-05-07
Publication date: 1993-01-29
Also published as: JPS60234940A

Description

[Detailed description of the invention]

（産業上の利用分野）本発明は、摺動接点材料に係り、特にそれを構
成するブラシとコンミテータ又はスリツプリング
の材料の改良に関する。（従来技術）従来の摺動接点装置は、Au30〜50重量％、
Ag20〜40重量％、Pd20〜40重量％の合金材料に
て構成したブラシと、Ag−Cd0.5〜15重量％の合
金材料にて構成したコンミテータ又はスリツプリ
ングとを組み合わせて成るものである。（発明が解決しようとする問題点）ところで、この摺動接点装置のブラシは、コン
ミテータ又はスリツプリングとの摺動時に凝着
し、耐摩耗性が劣り、摩耗粉が生じ易くノイズ発
生の原因となつていた。一方、コンミテータはスリツプリングは、Ag
−Cd0.5〜15重量％の合金材料により構成され、
ブラシとの摺動時、粘着性が高く耐摩耗性に劣る
ものであつた。（発明の目的）本発明は、斯かる欠点を解消すべくなされたも
のであり、ブラシの耐摩耗性を向上させ、コンミ
テータ又はスリツプリングの耐摩耗性を向上させ
た摺動接点装置を提供せんとするものである。（問題点を解決するための手段）本発明の摺動接点装置は、Au30〜50重量％、
Ag20〜40重量％、Pd20〜40重量％のAu−Ag−
Pdが95〜99.5重量％及び残部がCo、Sn、及びTi
の少なくとも一種を合計で0.5〜５重量％から成
る合金材料にて構成したブラシとを組み合わせて
成るものである。（作用）本発明の摺動接点材料に於いて、ブラシを
Au30〜50重量％、Ag20〜40重量％、Pd20〜40重
量％のAu−Ag−Pdが95〜99.5重量％及び残部が
Co、Sn及びTiの少なくとも一種を合計で0.5〜５
重量％から成る合金材料にて構成した理由は、前
記Au−Ag−Pdの合金材料の耐摩耗性を向上すべ
く硬くする為で、0.5重量％未満ではその効果を
発揮できず、５重量％を超えると酸化物の発生量
が多くなり、接触抵抗が高くなり、その上不安定
となるものである。また、Au、Ag、Pdの含有量
は、前記従来の合金材料の組成比に変更を加えな
い範囲とすることにより、従来の合金材料の特性
は損なわれることなく発揮されることとなるもの
である。コンミテータ又はスリツプリングを、Ag−
Cu3〜12重量％又はAg−Cu3〜12重量％−Cd5重
量％以下の合金材料にて構成した理由は、ブラシ
との摺動時の貼着性を迎えて耐摩耗性を向上させ
る為で、Cuの含有量が３重量％未満ではその効
果が得られず、12重量％を超えると摺動時に発生
する酸化物の量が多くなりすぎて接触抵抗が高く
不安定になり、Cdの含有量が５重量％を超える
とこれが酸化Cdとなつた際、接触抵抗が高くな
り、耐摩耗性が劣化するものである。従つて、
Cuの含有量は３〜12重量％、Cdの含有量は５重
量％を超えないようにしたものである。次に本発明による摺動接点装置の具体的な実施
例と従来例について説明する。（実施例）下記の表−１の左欄に示す成分組成の実施例及
び従来例の合金材料より成る線径0.7mmのブラシ
線材を各々長さ８mmに切断し、２本並列させて一
端を幅10mm、長さ13mm、厚さ0.2mmの台材に溶接
し、他端に2Rの円弧状の接触部を曲成してブラ
シを作つた。一方下記の表−１の右欄に示す成分
組成の実施例及び従来定例の合金材料により成る
厚さ0.5mmの板材を打ち抜いて直径50mmのスリツ
プリングを作つた。然してこれらブラシ及びスリ
ツプリングを夫々組み合わせて摺動接点装置を作
り、夫々ブラシをスリツプリングに接触させ、ス
リツプリングを正逆回転させて下記の試験条件に
て摺動試験を行ない、ブラシ及びスリツプリング
の摩耗量と接触抵抗を測定した処、下記の表−に
示すような結果を得た。試験条件電流：0.6A 電圧：12V 負荷：抵抗負荷回転速度：1000回転／分周速：120〜130m／min 接触力：100g 試験時間：７時間 (Industrial Application Field) The present invention relates to sliding contact materials, and particularly to improvements in the materials of the brushes, commutators, or slip rings that constitute them. (Prior art) Conventional sliding contact devices contain Au30-50% by weight,
It is a combination of a brush made of an alloy material containing 20-40% by weight of Ag and 20-40% by weight of Pd, and a commutator or slip ring made of an alloy material containing 0.5-15% by weight of Ag-Cd. (Problems to be Solved by the Invention) By the way, the brush of this sliding contact device adheres to the commutator or slip ring when sliding, has poor wear resistance, and easily generates wear powder, which can cause noise. I was getting used to it. On the other hand, the commutator is a slip ring that is Ag
- Composed of alloy material with 0.5 to 15% by weight of Cd,
When sliding with a brush, it was highly sticky and had poor abrasion resistance. (Object of the Invention) The present invention has been made in order to eliminate such drawbacks, and provides a sliding contact device that improves the wear resistance of the brush and the wear resistance of the commutator or slip ring. That is. (Means for solving the problem) The sliding contact device of the present invention includes Au30 to 50% by weight,
Au−Ag− with Ag20~40wt%, Pd20~40wt%
Pd is 95-99.5% by weight and the balance is Co, Sn, and Ti
and a brush made of an alloy material containing a total of 0.5 to 5% by weight of at least one of the above. (Function) In the sliding contact material of the present invention, the brush
Au-Ag-Pd is 95-99.5% by weight and the balance is 30-50% by weight of Au, 20-40% by weight of Ag, 20-40% by weight of Pd.
At least one of Co, Sn and Ti in total of 0.5 to 5
The reason why the composition is made of an alloy material consisting of 5% by weight is to make the Au-Ag-Pd alloy material hard in order to improve its wear resistance. If it exceeds this, the amount of oxides generated will increase, the contact resistance will increase, and furthermore, it will become unstable. Furthermore, by setting the content of Au, Ag, and Pd within a range that does not change the composition ratio of the conventional alloy material, the characteristics of the conventional alloy material can be exhibited without being impaired. be. Commutator or slip spring, Ag-
The reason why it is made of an alloy material of 3 to 12% by weight of Cu or 3 to 12% of Ag-Cu to 5% by weight of Cd is to improve the wear resistance when sliding with the brush. If the Cu content is less than 3% by weight, this effect cannot be obtained, and if it exceeds 12% by weight, the amount of oxide generated during sliding will be too large, resulting in high contact resistance and instability. If it exceeds 5% by weight, when it becomes oxidized Cd, contact resistance increases and wear resistance deteriorates. Therefore,
The content of Cu is 3 to 12% by weight, and the content of Cd is not more than 5% by weight. Next, specific embodiments and conventional examples of the sliding contact device according to the present invention will be described. (Example) Brush wire rods with a wire diameter of 0.7 mm made of alloy materials of the example and conventional example shown in the left column of Table 1 below were each cut into lengths of 8 mm, and two wires were placed in parallel and one end was cut. A brush was made by welding it to a base material with a width of 10 mm, a length of 13 mm, and a thickness of 0.2 mm, and a 2R arc-shaped contact part was bent at the other end. On the other hand, a slip ring with a diameter of 50 mm was made by punching out a 0.5 mm thick plate made of a conventional alloy material having the composition shown in the right column of Table 1 below. A sliding contact device was made by combining these brushes and slip rings, and a sliding test was conducted under the following test conditions by bringing each brush into contact with the slip ring and rotating the slip ring in forward and reverse directions. When the amount of wear and contact resistance were measured, the results shown in the table below were obtained. Test conditions Current: 0.6A Voltage: 12V Load: Resistive load Rotation speed: 1000 revolutions/min Circumferential speed: 120-130m/min Contact force: 100g Test time: 7 hours

【表】【table】

【表】上記の表−２で明らかなように実施例１〜12の
摺動接点装置のブラシとスリツプリングは、夫々
従来例１，２の摺動接点のブラシとスリツプリン
グに比し摩耗量が著しく少なく、接触抵抗は低く
安定していることが判る。これはひとえに実施例
１〜12の摺動接点装置のブラシを構成している合
金材料が、摺動時にCu，Sn，Tiの少なくとも１
種の添加によつて硬くなり、耐凝着性が向上し、
また摺動時に発生する酸化物の量が摩耗量とバラ
ンスしているからに他ならない。また実施例１〜
12の摺動接点装置のスリツプリングを構成してい
る合金材料のCuによつて摺動時の粘着性が高く
なるのが抑えられて耐摩耗性が向上しているから
に他ならない。（発明の効果）以上詳記した通り本発明による摺動接点装置
は、従来の摺動接点装置に比べブラシとコンミテ
ータ又はスリツプリングの耐摩耗性が著しく優れ
ていて、摩耗粉の発生量が極めて少なく、ノイズ
の発生が殆どなく、また接触抵抗についても低く
安定しているので、従来の摺動接点装置にとつて
代わることのできる画期的なものと云える。[Table] As is clear from Table 2 above, the brushes and slip rings of the sliding contact devices of Examples 1 to 12 have a greater amount of wear than the brushes and slip rings of the sliding contact devices of Conventional Examples 1 and 2, respectively. It can be seen that the contact resistance is low and stable. This is simply due to the fact that the alloy material constituting the brush of the sliding contact devices of Examples 1 to 12 contains at least one of Cu, Sn, and Ti during sliding.
The addition of seeds makes it harder and improves adhesion resistance.
This is also because the amount of oxide generated during sliding is in balance with the amount of wear. Also, Example 1~
This is because the Cu alloy material that makes up the slip ring of the sliding contact device in No. 12 suppresses the increase in stickiness during sliding and improves wear resistance. (Effects of the Invention) As detailed above, the sliding contact device according to the present invention has significantly superior wear resistance of the brush and commutator or slip ring compared to conventional sliding contact devices, and generates extremely little wear powder. Since the contact resistance is low and stable, it can be said to be an epoch-making device that can replace conventional sliding contact devices.

Claims

[Claims]

1 Composition ratio of 30 to 50% by weight of Au, 20 to 40% by weight of Ag, 20 to 40% by weight of Pd, 95 to 99.5% by weight of Au-Ag-Pd, and the balance of at least one of Co, Sn, and Ti, totaling 0.5 to 5%. A brush composed of an alloy material consisting of 3% to 12% by weight of Ag-Cu or Ag-
A sliding contact device consisting of a commutator or slip ring made of an alloy material containing 3 to 12% by weight of Cu and 5% by weight of Cd or less.