JPH0327613B2 - - Google Patents
Info
- Publication number
- JPH0327613B2 JPH0327613B2 JP58102087A JP10208783A JPH0327613B2 JP H0327613 B2 JPH0327613 B2 JP H0327613B2 JP 58102087 A JP58102087 A JP 58102087A JP 10208783 A JP10208783 A JP 10208783A JP H0327613 B2 JPH0327613 B2 JP H0327613B2
- 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
- OYJSZRRJQJAOFK-UHFFFAOYSA-N palladium ruthenium Chemical compound [Ru].[Pd] OYJSZRRJQJAOFK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000956 alloy Substances 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910020224 Pb—Ru Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
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、
Pb87〜93重量％、Ru7〜13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、その点に着目
されて、Pd、Ruなどの元素及び含有量を限定さ
れてなるものである。
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
Pd87〜93重量％、Ru7〜13重量％のPd−Ruが
92.0〜98.5重量％及び残部がSn1〜５重量％、
Te、Sr及びZr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Pd87〜93重量％、Ru7〜13重量％のPb−Ruが
92.0〜98.5重量％及び残部がSn1〜５重量％、
Te、Sr及びZr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SnとTe、Sr、Zrの分散に
よつて硬くする為で、Snが1.0重量％未満あるい
はTe、Sr及びZr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十分発揮できず、
Snが５重量％を超えるか、あるいはTe、Sr及び
Zr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、
Pd、Ru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Sn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
の右欄の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,
Alloy materials consisting of 87-93% by weight of Pb and 7-13% by weight of Ru were widely used (New Contact Materials, edited by Japan Electronic Materials Technology Association, published by Kogyo Nichi-Nichi Shimbun on July 8, 1966). (See page 115). This alloy material has particularly excellent properties such as mechanical strength, corrosion resistance, and spring properties, and with this in mind, the elements and content of Pd, Ru, etc. 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 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
Pd-Ru with Pd87~93wt% and Ru7~13wt%
92.0 to 98.5% by weight and the balance is Sn 1 to 5% by weight,
At least one of Te, Sr and Zr in total of 0.5 to 3
% by weight. In the sliding contact material for brushes of the present invention, Pb-Ru has a composition ratio of 87 to 93% by weight of Pd and 7 to 13% by weight of Ru.
92.0 to 98.5% by weight and the balance is Sn 1 to 5% by weight,
At least one of Te, Sr and Zr in total of 0.5 to 3
The reason why the conventional alloy material is made hard by dispersing Sn, Te, Sr, and Zr in order to improve its wear resistance. At least one of these in total
If it is less than 0.5% by weight, its effect cannot be fully demonstrated,
Sn exceeds 5% by weight, or Te, Sr and
If the total amount of at least one type of Zr exceeds 3% by weight, the amount of oxides generated will increase, contact resistance will increase, and furthermore, it will become unstable. Also,
By setting the contents of Pd and Ru 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, we used a conventional alloy material as a base material, and added Sn and
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: 130-120m/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、SnとTe、Sr、Zr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, it can be seen that the brush contacts of Examples 1 to 10 had significantly less wear than the conventional brush contacts, and the contact resistance was 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, becomes hard and resistant due to the dispersion of Sn, Te, Sr, and Zr 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 a lower and more stable contact resistance than when using conventional brush sliding contact materials.
Claims (1)
のPd−Ruが92.0〜98.5重量％及び残部がSn1〜５
重量％、Te、Sr及びZr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: Pd 87-93% by weight, Ru 7-13% by weight
92.0~98.5% by weight of Pd-Ru and the balance is Sn1~5
A sliding contact material for a brush, characterized in that the total content of at least one of Te, Sr and Zr is 0.5 to 3% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58102087A JPS59229437A (en) | 1983-06-08 | 1983-06-08 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58102087A JPS59229437A (en) | 1983-06-08 | 1983-06-08 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59229437A JPS59229437A (en) | 1984-12-22 |
| JPH0327613B2 true JPH0327613B2 (en) | 1991-04-16 |
Family
ID=14317989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58102087A Granted JPS59229437A (en) | 1983-06-08 | 1983-06-08 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59229437A (en) |
-
1983
- 1983-06-08 JP JP58102087A patent/JPS59229437A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59229437A (en) | 1984-12-22 |