JPH0351073B2 - - Google Patents
Info
- Publication number
- JPH0351073B2 JPH0351073B2 JP24621983A JP24621983A JPH0351073B2 JP H0351073 B2 JPH0351073 B2 JP H0351073B2 JP 24621983 A JP24621983 A JP 24621983A JP 24621983 A JP24621983 A JP 24621983A JP H0351073 B2 JPH0351073 B2 JP H0351073B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- alloy material
- brush
- sliding
- sliding contact
- 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
Links
- 239000000956 alloy Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052733 gallium Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- OYJSZRRJQJAOFK-UHFFFAOYSA-N palladium ruthenium Chemical compound [Ru].[Pd] OYJSZRRJQJAOFK-UHFFFAOYSA-N 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 description 5
- 229910017944 Ag—Cu Inorganic materials 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000929 Ru alloy Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Contacts (AREA)
Description
本発明は、摺動接点装置に係り、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。
従来の摺動接点装置は、Pd87〜93重量%、
Ru7〜13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合わせ
て成るものである。
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の耐摩耗
性が劣り、摩耗粉が生じ易く接触抵抗が不安定と
なつていた。
一方、コンミテータ又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。
本発明は、斯かる欠点を解消すべくなされたも
のであり、ブラシの耐摩耗性及び接触抵抗特性を
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。
本発明の摺動接点装置は、組成比Pd87〜93重
量%、Ru7〜13重量%のPd−Ruが95〜99.5重量
%及び残部がAl、Ga、Mn及びNiの少なくとも
1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、Ag−Cu3〜12重量%又は
Ag−Cu3〜12重量%−Cd5重量%以下の合金材料
にて構成したコンミテータ又はスリツプリングと
を組合わせて成るものである。
本発明の摺動接点装置に於いて、ブラシを組成
比でPd87〜93重量%、Ru7〜13重量%のPd−Ru
が95〜99.5重量%及び残部がAl、Ga、Mn及びNi
の少なくとも1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Rd−Ruの
合金材料の耐摩耗性を向上すべく潤滑剤となる酸
化物を適量発生させる為で、0.5重量%未満では
酸化物の発生量が少なくて潤滑剤としての効果を
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、Pd、Ru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
との摺動時の粘着性を抑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、耐摩耗性が劣下するものである。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。
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例の合金材料により成る厚
さ0.5mmの板材を打抜いて直径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−2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
回転数 :1000回転/分
周速度 :120〜130m/min
接触力 :100g
摺動時間:7時間
The present invention relates to a sliding contact device, and particularly to improvements in the materials of the brush, commutator, or slip ring constituting the sliding contact device. Conventional sliding contact device has Pd87~93% by weight,
It is a combination of a brush made of an alloy material containing 7 to 13% by weight of Ru and a commutator or slip ring made of an alloy material containing 0.5 to 15% by weight of Ag-Cd. By the way, the brush of this sliding contact device has poor abrasion resistance when sliding with a commutator or a slip ring, and abrasion powder is likely to be generated, resulting in unstable contact resistance. On the other hand, a commutator or slip ring is
It was composed of an alloy material containing 0.5 to 15% by weight of Ag-Cd, and had high stickiness and poor abrasion resistance when sliding with a brush. The present invention has been made in order to eliminate such drawbacks, and it is an object of the present invention to provide a sliding contact device that improves the abrasion resistance and contact resistance characteristics of the brush and improves the abrasion resistance of the commutator or slip ring. It is something to do. The sliding contact device of the present invention has a composition ratio of 87 to 93% by weight of Pd, 7 to 13% by weight of Pd-Ru, 95 to 99.5% by weight of Pd-Ru, and the balance of at least one of Al, Ga, Mn, and Ni for a total of 0.5% by weight. A brush made of an alloy material consisting of ~5% by weight and 3~12% by weight of Ag-Cu or
It is combined with a commutator or slip ring made of an alloy material of 3 to 12% by weight of Ag-Cu and 5% by weight of Cd. In the sliding contact device of the present invention, the brush has a Pd-Ru composition ratio of 87 to 93% by weight of Pd and 7 to 13% by weight of Ru.
is 95-99.5% by weight and the balance is Al, Ga, Mn and Ni
The reason why at least one of these is composed of an alloy material containing a total of 0.5 to 5% by weight is to generate an appropriate amount of oxides that act as a lubricant in order to improve the wear resistance of the Rd-Ru alloy material. If it is less than 0.5% by weight, the amount of oxide generated is small and it cannot be effective as a lubricant, and if it exceeds 5% by weight, the amount of oxide generated is large, resulting in high contact resistance and instability. It is what it is. In addition, the content of Pd and Ru is
By keeping the composition ratio of the conventional alloy material within a range where no change is made, the characteristics of the conventional alloy material can be exhibited without being impaired. Commutator or slip spring, Ag-
The reason why it is made of an alloy material containing less than 3 to 12 weight % Cu or 3 to 12 weight % Ag-Cu and 5 weight % Cd is to suppress the stickiness when sliding with the brush and improve wear resistance. If the Cd content is less than 3% by weight, the effect cannot be obtained, and if it exceeds 12% by weight, the amount of oxide generated during sliding becomes too large, resulting in high contact resistance and instability. If it exceeds 5% by weight, when it becomes oxidized Cd, the 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. 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 to a length of 8 mm, and two wires were placed in parallel, with one end having a width of 10 mm and a length of 8 mm. A brush was made by welding it to a base material with a length of 13 mm and a thickness of 0.2 mm, and a 2R arc-shaped contact part was curved at the other end. On the other hand, slip rings with a diameter of 50 mm were made by punching out 0.5 mm thick plates made of alloy materials having the compositions shown in the right column of Table 1 below. Therefore, a sliding contact device was made by combining these brushes and slip rings, respectively.
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.The wear amount and contact resistance of the brush and slip ring were measured, and the results are shown in Table 2 below. We obtained the results shown below. Test conditions Current: 0.6A Voltage: 12V Load: Resistance load Rotation speed: 1000 rotations/divided speed: 120-130m/min Contact force: 100g Sliding time: 7 hours
【表】【table】
【表】【table】
【表】
上記の表−2で明らかなように実施例1〜16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
1〜16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Al、Ga、Mn、Ni等の酸化
物が発生し、この酸化物が潤滑剤となり、耐摩耗
性が向上し、また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
1〜16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いて耐摩耗性が向上して
いるからに他ならない。
以上詳記した通り本発明の摺動接点装置は、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、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 16 have a greater amount of wear than the brushes and slip rings of the sliding contacts 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 brushes of the sliding contact devices of Examples 1 to 16 generates oxides such as Al, Ga, Mn, and Ni during sliding, and these oxides act as lubricants. This is because the wear resistance is improved and the amount of oxides generated is in balance with the amount of wear. In addition, the Cu alloy material constituting the slip ring of the sliding contact devices of Examples 1 to 16 suppresses the increase in stickiness during sliding and improves wear resistance. Nothing but. As detailed above, the sliding contact device of the present invention has significantly superior wear resistance of the brush and commutator or slip ring compared to conventional sliding contact devices, generates extremely little wear powder, and has contact resistance. Since it is also low and stable, it can be said to be an epoch-making device that can replace conventional sliding contact devices.
Claims (1)
のPd−Ruが95〜99.5重量%及び残部がAl、Ga、
Mn及びNiの少なくとも1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、
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コンミテ
ータ又はスリツプリングとを組合わせて成る摺動
接点装置。1 Composition ratio: Pd 87-93% by weight, Ru 7-13% by weight
95 to 99.5% by weight of Pd-Ru and the balance is Al, Ga,
A brush made of an alloy material containing a total of 0.5 to 5% by weight of at least one of Mn and Ni;
Ag-Cu3~12wt% or Ag-Cu3~12wt%-
A sliding contact device consisting of a commutator or slip ring made of an alloy material containing 5% by weight of Cd or less.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24621983A JPS60138864A (en) | 1983-12-27 | 1983-12-27 | Slide contact unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24621983A JPS60138864A (en) | 1983-12-27 | 1983-12-27 | Slide contact unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60138864A JPS60138864A (en) | 1985-07-23 |
JPH0351073B2 true JPH0351073B2 (en) | 1991-08-05 |
Family
ID=17145280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24621983A Granted JPS60138864A (en) | 1983-12-27 | 1983-12-27 | Slide contact unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60138864A (en) |
-
1983
- 1983-12-27 JP JP24621983A patent/JPS60138864A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60138864A (en) | 1985-07-23 |