JPH0351078B2 - - Google Patents
Info
- Publication number
- JPH0351078B2 JPH0351078B2 JP24622583A JP24622583A JPH0351078B2 JP H0351078 B2 JPH0351078 B2 JP H0351078B2 JP 24622583 A JP24622583 A JP 24622583A JP 24622583 A JP24622583 A JP 24622583A JP H0351078 B2 JPH0351078 B2 JP H0351078B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- brush
- sliding contact
- alloy material
- sliding
- 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
- 229910052718 tin Inorganic materials 0.000 claims description 4
- 229910017944 Ag—Cu Inorganic materials 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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、Pt0.1〜１重量％、
Pd41〜45重量％、Ag38〜42重量％、Cu14.5〜
18.5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に凝着し
て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Pt0.1〜１
重量％、Pd41〜45重量％、Ag38〜42重量％、
Cu14.5〜18.5重量％のPt−Pd−Ag−Cuが95〜
99.5重量％及び残部がCo、Sn及びTi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Pt0.1〜１重量％、Pd41〜45重量％、Ag38〜
42重量％、Cu14.5〜18.5重量％のPt−Pd−Ag−
Cuが95〜99.5重量％及び残部がCo、Sn及びTi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Pt−Pd−Ag
−Cuの合金材料の耐凝着性を向上すべく摺動時
の軟化を抑制する為で、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Pt、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。
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 devices contain Pt0.1 to 1% by weight,
Pd41~45wt%, Ag38~42wt%, Cu14.5~
A brush made of 18.5% by weight alloy material,
It is constructed by combining a commutator or a slip ring made of an alloy material containing 0.5 to 15% by weight of Ag-Cd. By the way, when the brush of this sliding contact device slides with a commutator or a slip ring, it tends to adhere to the brush and generate abrasion powder, which causes noise. 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 to eliminate such drawbacks, and aims to provide a sliding contact device in which the wear resistance of the brush is improved and the wear resistance of the commutator or slip ring is improved. . The sliding contact device of the present invention has a composition ratio of Pt0.1 to 1.
Weight%, Pd41~45wt%, Ag38~42wt%,
Cu14.5~18.5 wt% Pt-Pd-Ag-Cu 95~
A brush made of an alloy material consisting of 99.5% by weight and the balance of at least one of Co, Sn and Ti in total of 0.5 to 5% by weight, and Ag-Cu3 to 12% by weight or Ag-Cu3 to 12% by weight. 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 Pt0.1 to 1% by weight, Pd41 to 45% by weight, Ag38 to
42 wt%, Cu14.5~18.5 wt% Pt−Pd−Ag−
The reason why the alloy material is composed of 95 to 99.5% by weight of Cu and the balance of 0.5 to 5% by weight of at least one of Co, Sn, and Ti is because the Pt-Pd-Ag
- This is to suppress softening during sliding in order to improve the adhesion resistance of Cu alloy materials. If it is less than 0.5% by weight, the effect cannot be achieved, and if it exceeds 5% by weight, a large amount of oxides will be generated. This results in high contact resistance and instability. Also Pt, Pd, Ag, Cu
By setting the content 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. 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, 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/Division 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１〜13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、接触抵抗は同等
に安定していることが判る。これはひとえに実施
例１〜13の摺動接点装置のブラシを構成している
合金材料が、Co、Sn、Tiの少なくとも１種の添
加により摺動時の軟化が抑制されて耐凝着性が向
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１〜13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、ノイズの発
生が殆んどなく、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 13 have a higher 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 significantly lower and the contact resistance is equally stable. This is because the alloy material constituting the brushes of the sliding contact devices of Examples 1 to 13 is suppressed from softening during sliding due to the addition of at least one of Co, Sn, and Ti, and has improved adhesion resistance. This is because the amount of oxides generated during sliding 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 13 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 generates no noise. It can be said to be an epoch-making device that can replace conventional sliding contact devices.
Claims (1)
％、Ag38〜42重量％、Cu14.5〜18.5重量％のPt
−Pd−Ag−Cuが95〜99.5重量％及び残部がCo、
Sn及びTi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 Pt with composition ratios of 0.1 to 1% by weight, 41 to 45% by weight of Pd, 38 to 42% by weight of Ag, and 14.5 to 18.5% by weight of Cu.
-Pd-Ag-Cu is 95 to 99.5% by weight and the balance is Co,
A brush made of an alloy material containing a total of 0.5 to 5% by weight of at least one of Sn and Ti;
−Cu3~12wt% or Ag−Cu3~12wt%−Cd5
A sliding contact device consisting of a commutator or slip ring made of an alloy material of less than % by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24622583A JPS60138870A (en) | 1983-12-27 | 1983-12-27 | Slide contact unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24622583A JPS60138870A (en) | 1983-12-27 | 1983-12-27 | Slide contact unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60138870A JPS60138870A (en) | 1985-07-23 |
| JPH0351078B2 true JPH0351078B2 (en) | 1991-08-05 |
Family
ID=17145369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24622583A Granted JPS60138870A (en) | 1983-12-27 | 1983-12-27 | Slide contact unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60138870A (en) |
-
1983
- 1983-12-27 JP JP24622583A patent/JPS60138870A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60138870A (en) | 1985-07-23 |