JPH0259220B2 - - Google Patents
Info
- Publication number
- JPH0259220B2 JPH0259220B2 JP57230657A JP23065782A JPH0259220B2 JP H0259220 B2 JPH0259220 B2 JP H0259220B2 JP 57230657 A JP57230657 A JP 57230657A JP 23065782 A JP23065782 A JP 23065782A JP H0259220 B2 JPH0259220 B2 JP H0259220B2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- weight
- resistance
- brush
- brushes
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/023—Composite material having a noble metal as the basic material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Contacts (AREA)
- Conductive Materials (AREA)
Description
本発明は、刷子用摺動接点材料の改良に関す
る。
従来、摺動接点材料としては各種材料が用いら
れ、とりわけ刷子用摺動接点材料としては、
Au70.5〜72.5重量％、Pt7.5〜9.5％重量％、
Ag3.5〜5.5重量％、Cu13.5〜15.5重量％、Zn0.5
〜1.5重量％より成る合金材料が広く用いられて
いた（昭和40年７月８日に工業日日新聞社から発
行された日本電子材料技術協会編の新しい接点材
料第115頁参照）。
この合金材料は、とりわけ機械的強度、耐蝕
性、ばね性等の優れた特性を有し、各元素の複合
添加による相乗効果と相俟つて、特にAu，Ptに
よる耐蝕性、Ag，Pt，Cuによるばね性、Cu，
Pt，Auなどによる機械的強度、Znの鋳造性、加
工性の点に着目されて、Au，Pt，Ag，Cu，Zn
などの元素及び含有量を限定されて成るものであ
る。
然し乍ら、この合金材料で製作した刷子接点で
は、整流子との摺動時の耐摩耗性が劣り、摩耗粉
が生じ易く、接触抵抗が不安定でノイズ発生の原
因となつていた。
本発明は、斯かる欠点を解消すべくなされたも
のであり、前記合金材料を基材してこれに特定の
材料を僅かに添加させて、発生する酸化物を潤滑
剤とし、耐摩耗性を向上させた刷子用摺動接点材
料を提供せんとするものである。
本発明の刷子用摺動接点材料は、組成比で
Au70.5〜72.5重量％、Pt7.5〜9.5重量％、Ag3.5
〜5.5重量％、Cu13.5〜15.5重量％、Zn0.5〜1.5重
量％のAu−Pt−Ag−Cu−Znが93〜99.5重量％及
び残部がNb及びCdの少なくとも一種を合計で0.5
〜７重量％から成るものである。
本発明の刷子用摺動接点材料に於いて、組成比
でAu70.5〜72.5重量％、Pt7.5〜9.5重量％、
Ag3.5〜5.5重量％、Cu13.5〜15.5重量％、Zn0.5
〜1.5重量％のAu−Pt−Ag−Cu−Znが93〜99.5
重量％及び残部がNb及びCdの少なくとも一種を
合計で0.5〜７重量％としている理由は、前記従
来の合金材料の耐摩耗性、接触抵抗の安定性を向
上すべく潤滑剤となる酸化物を適量発生させる為
で、Nb及びCdのうち少なくとも一種を合計で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、Nb及びCdのうち少
なくとも一種を合計で７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，Pt，
Ag，Cu，Zn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。
次に従来の合金材料を基材とし、これにNbを
添加し、表の実施例１に示す成分組成の刷子用摺
動接点材料とし、以下同様にして表に示す成分組
成の本発明による刷子用摺動接点材料と従来の刷
子用摺動接点材料を用いて夫々線径0.7mmの刷子
線材を作り、これを各々長さ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
曲成して刷子接点を作つた。そして夫々の刷子接
点を円盤状の整流子に接触させ、整流子を正逆回
転させて下記の試験条件にて摺動試験を行い、摩
耗量及び接触抵抗を測定した処、下記の表の右欄
に示すような結果を得た。
試験条件
電 流：直流0.6A
電 圧：12V
負 荷：抵抗負荷
回転速度：1000回転／分
周 速：130〜120ｍ／min
接触力：100ｇ
試験時間：７時間
The present invention relates to improvements in sliding contact materials for brushes. Conventionally, various materials have been used as sliding contact materials, and in particular, as sliding contact materials for brushes,
Au70.5~72.5% by weight, Pt7.5~9.5% by weight,
Ag3.5~5.5wt%, Cu13.5~15.5wt%, Zn0.5
-1.5% by weight was widely used (see page 115 of New Contact Materials, edited by Japan Electronic Materials Technology Association, published by Kogyo Nichi-Nichi Shimbun on July 8, 1966). This alloy material has particularly excellent properties such as mechanical strength, corrosion resistance, and spring properties, and together with the synergistic effect of compound addition of each element, it has particularly good corrosion resistance due to Au, Pt, Ag, Pt, Cu, etc. Spring properties due to Cu,
Focusing on the mechanical strength of Pt, Au, etc., and the castability and workability of Zn, Au, Pt, Ag, Cu, Zn
The elements and content are limited. However, brush contacts made of this alloy material have poor abrasion resistance when sliding with the commutator, tend to generate abrasion powder, and have unstable contact resistance, causing noise generation. The present invention has been made to eliminate such drawbacks, and uses the above-mentioned alloy material as a base material and adds a small amount of a specific material to it, uses the generated oxide as a lubricant, and improves wear resistance. It is an object of the present invention to provide an improved sliding contact material for brushes. The sliding contact material for brushes of the present invention has a composition ratio of
Au70.5~72.5wt%, Pt7.5~9.5wt%, Ag3.5
~5.5 wt%, Cu13.5~15.5 wt%, Zn0.5~1.5 wt% Au-Pt-Ag-Cu-Zn 93-99.5 wt% and the balance at least one of Nb and Cd, total 0.5
~7% by weight. In the sliding contact material for brushes of the present invention, the composition ratio is 70.5 to 72.5% by weight of Au, 7.5 to 9.5% by weight of Pt,
Ag3.5~5.5wt%, Cu13.5~15.5wt%, Zn0.5
~1.5 wt% Au-Pt-Ag-Cu-Zn 93-99.5
The reason why the weight percentage and balance is 0.5 to 7 weight percent in total of at least one of Nb and Cd is that oxides that act as lubricants are added to improve the wear resistance and stability of contact resistance of the conventional alloy material. This is to generate an appropriate amount of at least one of Nb and Cd, totaling 0.5
If the total content of at least one of Nb and Cd exceeds 7% by weight, the amount of oxides generated will increase and the contact resistance will decrease. It becomes expensive and unstable. Also, Au, Pt,
By setting the contents of Ag, Cu, and Zn 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. Next, a conventional alloy material was used as a base material, and Nb was added thereto to obtain a sliding contact material for a brush having the composition shown in Example 1 of the table. Brush wires with a wire diameter of 0.7 mm were made using sliding contact materials for commercial use and conventional sliding contact materials for brushes, each cut into 8 mm lengths, and two wires were placed in parallel with one end having a width of 10 mm and a length of 10 mm. 13mm, thickness 0.2mm
A brush contact was made by welding it to the base material and bending a 2R arc-shaped contact part at the other end. Then, each brush contact was brought into contact with a disk-shaped commutator, and the commutator was rotated in forward and reverse directions to perform a sliding test under the following test conditions, and the wear amount and contact resistance were measured. The results shown in the column were obtained. Test conditions Current: DC 0.6A Voltage: 12V Load: Resistance load Rotation speed: 1000 rotations/divided speed: 130 to 120m/min Contact force: 100g Test time: 7 hours
【表】
上記の表で明らかなように実施例１〜10の刷子
接点は従来例の刷子接点に比し摩耗量が著しく少
なく、接触抵抗が低く安定していることが判る。
これはひとえに実施例１〜10の刷子接点の刷子線
材を構成している本発明の刷子用摺動接点材料
が、摺動時にNb，Cd等の酸化物が発生し、この
酸化物が潤滑剤となり、耐摩耗性が向上するから
に他ならない。また、酸化物が軟らかい為、摺動
作用により容易に除去されるので、接触抵抗が低
く安定して変わらないからに他ならない。
以上詳記した通り本発明による刷子用摺動接点
材料によれば、従来の刷子用摺動接点材料に比べ
著しく耐摩耗性に優れ、摩耗粉の発生量が極めて
少なく、ノイズの発生が殆んど無く、また従来の
刷子用摺動接点材料による場合よりも低く安定し
た接触抵抗を有する刷子接点を得ることができる
という効果がある。[Table] As is clear from the above table, the brush contacts of Examples 1 to 10 have significantly less wear than the conventional brush contacts, and it can be seen that the contact resistance is low and stable.
This is because the sliding contact material for brushes of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 10, generates oxides such as Nb and Cd during sliding, and these oxides act as lubricants. This is because the wear resistance is improved. Further, since the oxide is soft, it is easily removed by the sliding action, so the contact resistance is low and does not change stably. As detailed above, the sliding contact material for brushes according to the present invention has significantly superior wear resistance compared to conventional sliding contact materials for brushes, generates extremely little wear powder, and generates almost no noise. This has the advantage that it is possible to obtain a brush contact having a lower and more stable contact resistance than when using conventional brush contact materials.
Claims (1)
量％、Ag3.5〜5.5重量％、Cu13.5〜15.5重量％、
Zn0.5〜1.5重量％のAu−Pt−Ag−Cu−Znが93〜
99.5重量％及び残部がNb及びCdの少なくとも一
種を合計で0.5〜７重量％であることを特徴とす
る刷子用摺動接点材料。1 Composition ratio: Au70.5-72.5% by weight, Pt7.5-9.5% by weight, Ag3.5-5.5% by weight, Cu13.5-15.5% by weight,
Au-Pt-Ag-Cu-Zn with Zn0.5-1.5 wt% 93~
A sliding contact material for a brush, comprising 99.5% by weight and the balance of at least one of Nb and Cd in a total of 0.5 to 7% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57230657A JPS59118830A (en) | 1982-12-25 | 1982-12-25 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57230657A JPS59118830A (en) | 1982-12-25 | 1982-12-25 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59118830A JPS59118830A (en) | 1984-07-09 |
| JPH0259220B2 true JPH0259220B2 (en) | 1990-12-11 |
Family
ID=16911235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57230657A Granted JPS59118830A (en) | 1982-12-25 | 1982-12-25 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59118830A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122422A (en) * | 2013-03-03 | 2013-05-29 | 贵研铂业股份有限公司 | Au-based friction pair pairing material |
| CH714786B1 (en) * | 2018-03-15 | 2022-05-13 | Argor Heraeus Sa | Gold alloy with color compatible with the 5N standard and method of production of the same. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5080493A (en) * | 1973-11-22 | 1975-06-30 |
-
1982
- 1982-12-25 JP JP57230657A patent/JPS59118830A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59118830A (en) | 1984-07-09 |