JPH037740B2 - - Google Patents
Info
- Publication number
- JPH037740B2 JPH037740B2 JP58113695A JP11369583A JPH037740B2 JP H037740 B2 JPH037740 B2 JP H037740B2 JP 58113695 A JP58113695 A JP 58113695A JP 11369583 A JP11369583 A JP 11369583A JP H037740 B2 JPH037740 B2 JP H037740B2
- 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
- 229910052738 indium Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 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
Landscapes
- 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In1.0〜5.0重量％、Te、
Ti、Li及びMg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In1.0〜5.0重量％、
Te、Ti、Li及びMg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InとTe、Ti、Li
及びMgの金属間化合物の分散によつて硬くする
為で、Inが1.0重量％未満あるいは、Te、Ti、Li
及びMg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、Inが５重量％を
超えるかあるいは、Te、Ti、Li及びMg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Inと
Te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 thereof 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 In1.0~5.0% by weight, Te,
At least one of Ti, Li and Mg in total of 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 In 1.0-5.0% by weight,
At least one of Te, Ti, Li and Mg in total
The reason why the content is 0.5 to 3% by weight is that In, Te, Ti, and Li are added to improve the wear resistance of the conventional alloy materials.
It is made hard by dispersing intermetallic compounds of Mg and In less than 1.0% by weight or Te, Ti, Li
A total of 0.5% by weight of at least one of Mg and
If the amount of In is less than 5% by weight, or if the total amount of at least one of Te, Ti, Li, and Mg exceeds 3% by weight, the amount of oxides generated increases and the contact resistance decreases. becomes high and unstable. Also, Au, Pt,
By setting the contents of Pd and Ag 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. Next, a conventional alloy material is used as a base material, and In is added to this.
A sliding contact material for a brush having the composition shown in Example 1 in the table was prepared by adding Te, 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. Each wire diameter is 0.7mm using the material
Brush wire rods were made, each cut into 8 mm lengths, two wires were placed in parallel, one end was welded to a base material with a width of 10 mm, a length of 13 mm, and a thickness of 0.2 mm, and a 2R arc-shaped contact was made at the other end. I made a brush contact by bending the part. Then, each brush contact was brought into contact with a disc-shaped commutator, the commutator was rotated forward and backward, and a sliding test was conducted 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１〜14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１〜14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、InとTe、Ti、Li及びMgの金属間化合物
の分散によつて硬くなり、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 table above, it can be seen that the brush contacts of Examples 1 to 14 had significantly less wear than the conventional brush contacts, and the contact resistance was equally low and stable. This is because the brush sliding contact material of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 14, becomes hard due to the dispersion of In, Te, Ti, Li, and Mg intermetallic compounds. This is because the wear resistance is improved. 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 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In1.0〜5.0重
量％、Te、Ti、Li及びMg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%
A sliding contact for a brush comprising 92 to 98.5% by weight of Pd-Ag, the balance being 1.0 to 5.0% by weight of In, and a total of 0.5 to 3% by weight of at least one of Te, Ti, Li, and Mg. material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58113695A JPS605847A (en) | 1983-06-24 | 1983-06-24 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58113695A JPS605847A (en) | 1983-06-24 | 1983-06-24 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS605847A JPS605847A (en) | 1985-01-12 |
| JPH037740B2 true JPH037740B2 (en) | 1991-02-04 |
Family
ID=14618832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58113695A Granted JPS605847A (en) | 1983-06-24 | 1983-06-24 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS605847A (en) |
-
1983
- 1983-06-24 JP JP58113695A patent/JPS605847A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS605847A (en) | 1985-01-12 |