JPH037738B2 - - Google Patents
Info
- Publication number
- JPH037738B2 JPH037738B2 JP58113690A JP11369083A JPH037738B2 JP H037738 B2 JPH037738 B2 JP H037738B2 JP 58113690 A JP58113690 A JP 58113690A JP 11369083 A JP11369083 A JP 11369083A JP H037738 B2 JPH037738 B2 JP H037738B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- brush
- contact
- sliding contact
- resistance
- 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
- 239000000463 material Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000956 alloy Substances 0.000 description 9
- 229910052748 manganese Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052737 gold 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
- 229910052709 silver Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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、
Au19〜21重量％、Pt4〜６重量％、Pd44〜46重
量％、Ag29〜31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30頁参照）。
この合金材料は、各元素の複合添加による相乗
効果によつて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、それらの点に着目され
て、Au、Pt、Pd、Ag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、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としてこれに特定
の材料を僅かに添加させて、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
Au19〜21重量％、Pt4〜６重量％、Pd44〜46重
量％、Ag29〜31重量％のAu−Pt−Pd−Agが92
〜98.5重量％及び残部がMn1.0〜5.0重量％、Si、
Bi及びGeの少なくとも一種を合計で0.5〜３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Au19〜21重量％、Pt4〜６重量％、Pd44〜46
重量％、Ag29〜31重量％のAu−Pt−Pd−Agが
92〜98.5重量％及び残部がMn1.0〜5.0重量％、
Si、Bi及びGeの少なくとも一種を合計で0.5〜３
重量％としている理由は、前記従来の合金材料の
耐摩耗性を向上すべく硬くする為で、Mnが1.0重
量％未満あるいは、Si、Bi及びGeのうち少なく
とも一種を合計で0.5重量％未満ではその効果を
発揮できず、Mnが５重量％を超えるかあるい
は、Si、Bi及びGeのうち少なくとも一種を合計
で３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、Pd、Ag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Mnと
Si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,
An alloy material consisting of 19-21% by weight of Au, 4-6% by weight of Pt, 44-46% by weight of Pd, and 29-31% by weight of Ag was widely used. (See page 30 of New Contact Materials edited by Japan Electronic Materials Technology Association). This alloy material has excellent properties such as mechanical strength, corrosion resistance, and spring properties due to the synergistic effect of the combined addition of each element. The elements and content are limited. However, brush contacts made of this alloy material have poor abrasion resistance when sliding with the commutator, and are likely to generate abrasion powder, causing noise. The present invention has been made to eliminate such drawbacks, and provides a sliding contact material for brushes that uses the above-mentioned alloy material as a base material and has improved wear resistance by adding a small amount of a specific material to the alloy material. This is what we intend to provide. The sliding contact material for brushes of the present invention has a composition ratio of
92 Au-Pt-Pd-Ag with Au19~21wt%, Pt4~6wt%, Pd44~46wt%, Ag29~31wt%
~98.5% by weight and the balance is Mn1.0~5.0% by weight, Si,
The total content of at least one of Bi and Ge is 0.5 to 3% by weight. In the sliding contact material for brushes of the present invention, the composition ratio is 19 to 21% by weight of Au, 4 to 6% by weight of Pt, and 44 to 46% by weight of Pd.
wt%, Ag29-31 wt% Au-Pt-Pd-Ag
92-98.5% by weight and the balance is Mn 1.0-5.0% by weight,
At least one of Si, Bi and Ge in total of 0.5 to 3
The reason why it is expressed as % by weight is to make the conventional alloy material hard in order to improve its wear resistance. If the Mn content exceeds 5% by weight or the total content of at least one of Si, Bi, and Ge exceeds 3% by weight, the amount of oxides generated increases, resulting in high contact resistance. Moreover, it is unstable. In addition, the content of Au, Pt, Pd, and Ag 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. Next, a conventional alloy material is used as a base material, and Mn and Mn are added to it.
By adding Si, a sliding contact material for a brush having the composition shown in Example 1 of the table was prepared, and a sliding contact material for a brush according to the present invention having the composition shown in the table and a conventional sliding contact for a brush were prepared in the same manner. Brush wire rods each having a wire diameter of 0.7 mm were made using the materials, and each of these was cut to a length of 8 mm.
Two pieces are placed in parallel and one end is 10mm wide, 13mm long, and thick.
A brush contact was made by welding to a 0.2 mm 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、接触抵抗が同等に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、MnとSi、Bi及びGeの少なくとも一種に
よつて硬くなり、耐摩耗性が向上されるからに他
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と同等の接触抵抗
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, it can be seen that the brush contacts of Examples 1 to 10 have significantly less wear than the conventional brush contacts, and the contact resistance is equally low and stable. This is simply because the brush sliding contact material of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 10, is hardened by Mn and at least one of Si, Bi, and Ge, and has excellent wear resistance. It's only because it improves. 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 contact resistance equivalent to that of a conventional brush contact material.
Claims (1)
Pd44〜46重量％、Ag29〜31重量％のAu−Pt−
Pd−Agが92〜98.5重量％及び残部がMn1.0〜5.0
重量％、Si、Bi及びGeの少なくとも一種を合計
で0.5〜３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: Au19-21% by weight, Pt4-6% by weight,
Au-Pt- with Pd44~46wt%, Ag29~31wt%
Pd-Ag is 92~98.5% by weight and the balance is Mn1.0~5.0
A sliding contact material for a brush, characterized in that the total content of at least one of Si, Bi and Ge is 0.5 to 3% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58113690A JPS605843A (en) | 1983-06-24 | 1983-06-24 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58113690A JPS605843A (en) | 1983-06-24 | 1983-06-24 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS605843A JPS605843A (en) | 1985-01-12 |
| JPH037738B2 true JPH037738B2 (en) | 1991-02-04 |
Family
ID=14618711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58113690A Granted JPS605843A (en) | 1983-06-24 | 1983-06-24 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS605843A (en) |
-
1983
- 1983-06-24 JP JP58113690A patent/JPS605843A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS605843A (en) | 1985-01-12 |