JPH0360893B2 - - Google Patents
Info
- Publication number
- JPH0360893B2 JPH0360893B2 JP58056125A JP5612583A JPH0360893B2 JP H0360893 B2 JPH0360893 B2 JP H0360893B2 JP 58056125 A JP58056125 A JP 58056125A JP 5612583 A JP5612583 A JP 5612583A JP H0360893 B2 JPH0360893 B2 JP H0360893B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- brush
- sliding contact
- 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
- 229910052738 indium Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910052787 antimony Inorganic materials 0.000 claims description 5
- 229910017944 Ag—Cu Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052709 silver Inorganic materials 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
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003466 welding Methods 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
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、
Pd30〜50重量％、Ag20〜40重量％、Cu20〜40重
量％より成る合金材料が広く用いられていた。
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、Ag、Cu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
Pd30〜50重量％、Ag20〜40重量％、Cu20〜40重
量％のPd−Ag−Cuが92〜98.5重量％及び残部が
Sb1.0〜5.0重量％、In、Ti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Pd30〜50重量％、Ag20〜40重量％、Cu20〜40
重量％のPd−Ag−Cuが92〜98.5重量％及び残部
がSb1.0〜5.0重量％、In、Ti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Sb
とIn、Ti、Zrとの金属間化合物を分散して硬く
する為で、Sbが１重量％未満あるいは、In、Ti
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発揮できず、Sbが５重量％
を超えるかあるいはIn、Ti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、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。
次に従来の合金材料を基材とし、これにSbと
In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 束 ：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 30-50% by weight of Pd, 20-40% by weight of Ag, and 20-40% by weight of Cu was widely used. This alloy material has particularly excellent properties such as mechanical strength, corrosion resistance, and spring properties, and with this in mind, it is made with limited elements and contents such as Pd, Ag, and Cu. . 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
Pd-Ag-Cu is 92-98.5% by weight and the balance is 30-50% by weight of Pd, 20-40% by weight of Ag, 20-40% by weight of Cu.
The composition contains 1.0 to 5.0% by weight of Sb and a total of 0.5 to 3% by weight of at least one of In, Ti, and Zr. In the sliding contact material for brushes of the present invention, the composition ratio is 30 to 50% by weight of Pd, 20 to 40% by weight of Ag, and 20 to 40% by weight of Cu.
The reason why Pd-Ag-Cu is 92 to 98.5% by weight, the balance is Sb 1.0 to 5.0% by weight, and at least one of In, Ti, and Zr is 0.5 to 3% by weight in total.
In order to improve the wear resistance of the conventional alloy materials, Sb
This is to disperse and harden intermetallic compounds of In, Ti, and Zr, and Sb is less than 1% by weight or In, Ti
A total of 0.5% by weight of at least one of Zr and
If the Sb content is less than 5% by weight, the effect cannot be achieved.
If the total amount of at least one of In, Ti, and Zr exceeds 3% by weight, the amount of oxides generated increases, contact resistance becomes high, and furthermore, it becomes unstable. Furthermore, by setting the contents of Pd, Ag, and Cu 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. be. Next, a conventional alloy material is used as a base material, and Sb and Sb are added to this.
By adding In, a brush sliding contact material having the composition shown in Example 1 of the table was prepared, and the same was applied to the brush sliding contact material of the present invention having the composition shown in the table and the conventional brush sliding contact material. Brush wire rods with a wire diameter of 0.7 mm were made using the materials, and each was cut into lengths 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 revolutions/min Circumferential flux: 130 to 120 m/min Contact force: 100 g 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、SbとIn、Ti、Zrと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, 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 brush sliding contact material of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 10, becomes hard due to the dispersion of intermetallic compounds of Sb, In, Ti, and Zr. 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 contact materials.
Claims (1)
％、Cu20〜40重量％のPd−Ag−Cuが92〜98.5重
量％及び残部がSb1.0〜5.0重量％、In、Ti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. Pd-Ag-Cu is 92-98.5% by weight with a composition ratio of 30-50% by weight of Pd, 20-40% by weight of Ag, and 20-40% by weight of Cu, and the balance is 1.0-5.0% by weight of Sb, In, Ti, and Zr.
A sliding contact material for a brush, characterized in that the total amount of at least one of the following is 0.5 to 3% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58056125A JPS59179740A (en) | 1983-03-31 | 1983-03-31 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58056125A JPS59179740A (en) | 1983-03-31 | 1983-03-31 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59179740A JPS59179740A (en) | 1984-10-12 |
| JPH0360893B2 true JPH0360893B2 (en) | 1991-09-18 |
Family
ID=13018346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58056125A Granted JPS59179740A (en) | 1983-03-31 | 1983-03-31 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59179740A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5484569A (en) * | 1994-08-12 | 1996-01-16 | The J. M. Ney Company | Silver palladium alloy |
| US5833774A (en) * | 1997-04-10 | 1998-11-10 | The J. M. Ney Company | High strength silver palladium alloy |
| EP2881479B1 (en) | 2012-08-03 | 2017-10-04 | Yamamoto Precious Metal Co., Ltd. | Alloy material, contact probe, and connection terminal |
-
1983
- 1983-03-31 JP JP58056125A patent/JPS59179740A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59179740A (en) | 1984-10-12 |