JPH0259208B2 - - Google Patents
Info
- Publication number
- JPH0259208B2 JPH0259208B2 JP57223492A JP22349282A JPH0259208B2 JP H0259208 B2 JPH0259208 B2 JP H0259208B2 JP 57223492 A JP57223492 A JP 57223492A JP 22349282 A JP22349282 A JP 22349282A JP H0259208 B2 JPH0259208 B2 JP H0259208B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- contact
- brush
- 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
- 229910052793 cadmium Inorganic materials 0.000 claims description 6
- 229910052738 indium Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 229910017944 Ag—Cu Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 description 8
- 229910052758 niobium Inorganic materials 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000012776 electronic material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum 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
- 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、
Pt0.1〜１重量％、Pd42〜44重量％、Ag39〜41重
量％、Cu15.5〜17.5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30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、この点に着目
されて、Pt、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、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
Pt0.1〜１重量％、Pd42〜44重量％、Ag39〜41重
量％、Cu15.5〜17.5重量％のPt−Pd−Ag−Cuが
93〜99.5重量％及び残部がNb、In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Pt0.1〜１重量％、Pd42〜44重量％、Ag39〜41
重量％、Cu15.5〜17.5重量％のPt−Pd−Ag−Cu
が93〜99.5重量％及び残部がNb、In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、In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、In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、Pt、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,
Alloy materials consisting of 0.1 to 1% by weight of Pt, 42 to 44% by weight of Pd, 39 to 41% by weight of Ag, and 15.5 to 17.5% by weight of Cu were widely used (Kogyo Nichi Nichi Shimbun on July 8, 1966). (See page 30 of New Contact Materials edited by the Japan Electronic Materials Technology Association, published by the Japan Electronic Materials Technology Association). 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 Pt, Pd, Ag, and Cu. It is. 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 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 a sliding contact material for a brush that has a high quality. The sliding contact material for brushes of the present invention has a composition ratio of
Pt-Pd-Ag-Cu with Pt0.1~1wt%, Pd42~44wt%, Ag39~41wt%, Cu15.5~17.5wt%
93 to 99.5% by weight, and the balance is a total of 0.5 to 7% by weight of at least one of Nb, In, and Cd. In the sliding contact material for brushes of the present invention, the composition ratio is 0.1 to 1% by weight of Pt, 42 to 44% by weight of Pd, and 39 to 41% of Ag.
wt%, Cu15.5-17.5 wt% Pt−Pd−Ag−Cu
The reason why the balance is 93 to 99.5% by weight and the balance is 0.5 to 7% by weight of at least one of Nb, In, and Cd is that oxides that act as lubricants are used to improve the wear resistance of the conventional alloy material. In order to generate an appropriate amount,
A total of 0.5 of at least one of Nb, In and Cd
If the total amount of at least one of Nb, In, and Cd exceeds 7% by weight, the amount of oxides generated will be large and it will not be effective as a lubricant. resistance increases,
Moreover, it is unstable. Also, Pt, Pd,
By setting the content of 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. 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１〜12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１〜12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、In、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は変わ
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 12 have significantly less wear than the conventional brush contacts, and it can be seen that the contact resistance is low and stable.
This is simply because the sliding contact material for brushes of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 12, generates oxides such as Nb, In, and Cd during sliding.
This is because this oxide acts as a lubricant and improves wear resistance. Moreover, since the oxide is soft, it can be easily removed by sliding action, so the contact resistance remains unchanged. 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)
％、Ag39〜41重量％、Cu15.5〜17.5重量％のPt
−Pd−Ag−Cuが93〜99.5重量％及び残部がNb、
In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 Pt with composition ratio of 0.1 to 1% by weight, Pd 42 to 44% by weight, Ag 39 to 41% by weight, Cu 15.5 to 17.5% by weight
-Pd-Ag-Cu is 93 to 99.5% by weight and the balance is Nb,
A sliding contact material for a brush, characterized in that the total content of at least one of In and Cd is 0.5 to 7% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57223492A JPS59113149A (en) | 1982-12-20 | 1982-12-20 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57223492A JPS59113149A (en) | 1982-12-20 | 1982-12-20 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59113149A JPS59113149A (en) | 1984-06-29 |
| JPH0259208B2 true JPH0259208B2 (en) | 1990-12-11 |
Family
ID=16798981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57223492A Granted JPS59113149A (en) | 1982-12-20 | 1982-12-20 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59113149A (en) |
-
1982
- 1982-12-20 JP JP57223492A patent/JPS59113149A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59113149A (en) | 1984-06-29 |