JPH0354815B2 - - Google Patents
Info
- Publication number
- JPH0354815B2 JPH0354815B2 JP24038683A JP24038683A JPH0354815B2 JP H0354815 B2 JPH0354815 B2 JP H0354815B2 JP 24038683 A JP24038683 A JP 24038683A JP 24038683 A JP24038683 A JP 24038683A JP H0354815 B2 JPH0354815 B2 JP H0354815B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- brush
- alloy material
- resistance
- 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
- 229910017944 Ag—Cu Inorganic materials 0.000 claims description 6
- 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
- 238000005299 abrasion Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Contacts (AREA)
- Motor Or Generator Current Collectors (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、Pd30〜50重量％、
Ag20〜40重量％、Cu20〜40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、軟化
温度が低くコンミテータ又はスリツプリングとの
摺動時に凝着して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、組成比でPd30〜50
重量％、Ag20〜40重量％、Cu20〜40重量％のPd
−Ag−Cu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Pd30〜50重量％、Ag20〜40重量％、Cu20〜
40重量％のPd−Ag−Cu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Pd−Ag−Cuの合金材料の耐凝着
性を向上すべく軟化温度を高める為で、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
Pd、Ag、Cu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 Pd30~50% by weight,
It is a combination of a brush made of an alloy material containing 20 to 40% Ag and 20 to 40% Cu by weight, and a commutator or slip ring made of an alloy material containing 0.5 to 15% Ag-Cd by weight. . By the way, the brush of this sliding contact device has a low softening temperature, and when it slides with a commutator or a slip ring, it tends to adhere and generate abrasion powder, making the contact resistance unstable. 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 Pd30 to 50.
wt%, Ag20~40wt%, Cu20~40wt%Pd
-Ag-Cu is 95 to 99.5% by weight 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%-
It is combined with a commutator or slip ring made of an alloy material containing 5% by weight of Cd or less. In the sliding contact device of the present invention, the composition ratio of the brush is 30 to 50% by weight of Pd, 20 to 40% by weight of Ag, and 20 to 20% by weight of Cu.
The reason why the alloy material is composed of 40% by weight of Pd-Ag-Cu, 95 to 99.5% by weight, and the balance consisting of 0.5 to 5% by weight of at least one of Al, Ga, Mn, and Ni is that the Pd - This is to increase the softening temperature in order to improve the adhesion resistance of the Ag-Cu alloy material. If it is less than 0.5% by weight, the effect cannot be achieved, and if it exceeds 5% by weight, the amount of oxides generated increases. The contact resistance becomes high and, moreover, it becomes unstable. Also
By setting the contents of Pd, Ag, and Cu within a range that does not change the composition ratio of the conventional alloy material,
The properties of conventional alloy materials will 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 content of Cd 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 into lengths of 8 mm, and two wire rods 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/Divide 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、接触抵抗は一段
と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、Al、Ga、Mn、Niの少なくと
も１種を添加することにより軟化温度が高めら
れ、耐凝着性が向上す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
抗についても一段と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 significantly lower and the contact resistance is even lower and more stable. This is because the softening temperature of the alloy material constituting the brushes of the sliding contact devices of Examples 1 to 16 is increased by adding at least one of Al, Ga, Mn, and Ni, resulting in improved adhesion resistance. This is because it improves. In addition, the Cu alloy material constituting the slip rings of the sliding contact devices of Examples 1 to 16 suppresses the increase in stickiness during sliding and improves wear resistance. None other than that. 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. It is also much lower and more stable, so it can be said to be an epoch-making device that can replace conventional sliding contact devices.
Claims (1)
％、Cu20〜40重量％のPd−Ag−Cu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 A total of 95-99.5% by weight of Pd-Ag-Cu with a composition ratio of 30-50% by weight of Pd, 20-40% by weight of Ag, 20-40% by weight of Cu, and the balance of at least one of Al, Ga, Mn and Ni. Combining a brush made of an alloy material containing 0.5 to 5% by weight and a commutator or slip ring made of an alloy material containing 3 to 12% by weight of Ag-Cu or 3 to 12% by weight of Ag-Cu-5% by weight of Cd. A sliding contact device consisting of the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24038683A JPS60131717A (en) | 1983-12-20 | 1983-12-20 | Slide contact unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24038683A JPS60131717A (en) | 1983-12-20 | 1983-12-20 | Slide contact unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60131717A JPS60131717A (en) | 1985-07-13 |
| JPH0354815B2 true JPH0354815B2 (en) | 1991-08-21 |
Family
ID=17058709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24038683A Granted JPS60131717A (en) | 1983-12-20 | 1983-12-20 | Slide contact unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60131717A (en) |
-
1983
- 1983-12-20 JP JP24038683A patent/JPS60131717A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60131717A (en) | 1985-07-13 |