JPH0252689B2 - - Google Patents
Info
- Publication number
- JPH0252689B2 JPH0252689B2 JP57208263A JP20826382A JPH0252689B2 JP H0252689 B2 JPH0252689 B2 JP H0252689B2 JP 57208263 A JP57208263 A JP 57208263A JP 20826382 A JP20826382 A JP 20826382A JP H0252689 B2 JPH0252689 B2 JP H0252689B2
- 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
- 229910052793 cadmium Inorganic materials 0.000 claims description 5
- 229910052738 indium Inorganic materials 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 229910002482 Cu–Ni Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 description 19
- 239000000956 alloy Substances 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 4
- 238000005299 abrasion Methods 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
- 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
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、硬
さ、耐蝕性、ばね性等の優れた、Au69〜71重量
％、Pt4〜６重量％、Ag9〜11重量％、Cu13〜15
重量％、Ni0.5〜1.5重量％より成る合金材料が広
く用いられていた。
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
Au69〜71重量％、Pt4〜６重量％、Ag9〜11重量
％、Cu13〜15重量％、Ni0.5〜1.5重量％のAu―
Pt―Ag―Cu―Niが95〜99.5重量％及び残部が
Nb、In及びCdの少なくとも一種を合計で0.5〜５
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Au69〜71重量％、Pt4〜６重量％、Ag9〜11重
量％、Cu13〜15重量％、Ni0.5〜1.5重量％のAu
―Pt―Ag―Cu―Niが95〜99.5重量％及び残部が
Nb、In及びCdの少なくとも一種を合計で0.5〜５
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５
重量％を超えると酸化物の発生量が多くなり、接
触抵抗が高く不安定となり、その上ばね性が劣化
するものである。
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, materials with excellent hardness, corrosion resistance, spring properties, etc., such as Au69-71% by weight, Pt4-6% by weight, Ag9 ~11 wt%, Cu13~15
% by weight, alloy materials consisting of 0.5-1.5% by weight Ni were widely used. 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
Au69~71wt%, Pt4~6wt%, Ag9~11wt%, Cu13~15wt%, Ni0.5~1.5wt% Au—
Pt-Ag-Cu-Ni is 95-99.5% by weight and the balance is
At least one of Nb, In and Cd in total of 0.5 to 5
% by weight. In the sliding contact material for brushes of the present invention, the composition ratio of Au is 69 to 71% by weight, Pt is 4 to 6% by weight, Ag is 9 to 11% by weight, Cu is 13 to 15% by weight, and Ni is 0.5 to 1.5% by weight.
-Pt-Ag-Cu-Ni is 95-99.5% by weight and the balance is
At least one of Nb, In and Cd in total of 0.5 to 5
The reason why it is expressed as % by weight is to generate an appropriate amount of oxide that acts as a lubricant in order to improve the wear resistance of the conventional alloy material. Because the amount of oxide generated is small, it cannot be effective as a lubricant,
A total of 5 types of at least one of Nb, In and Cd
If it exceeds % by weight, the amount of oxides generated will increase, the contact resistance will be high and unstable, and the spring properties will deteriorate. Next, a conventional alloy material is used as a base material, and Nb is added thereto to obtain a brush sliding contact material having the composition shown in Example 1 in the table. Brush wires with a wire diameter of 0.7 mm were made using the sliding contact material and the conventional sliding contact material for brushes, each was cut to a length of 8 mm, and two wires were placed in parallel with one end having a width of 10 mm and a length of 13 mm. A brush contact was made by welding to a 0.2 mm thick 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: 130-120m/min Contact force: 100g Test time: 7 hours
【表】
上記の表で明らかなように実施例１〜15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１〜15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等の酸化物を発生し、
この酸化物が潤滑剤となり、耐摩耗性、接触抵抗
特性が向上す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 15 had significantly less wear than the conventional brush contacts, and the contact resistance was low and stable.
This is simply due to the fact that the brush sliding contact material of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 15, generates oxides such as Nb, In, and Cd during sliding.
This is because this oxide acts as a lubricant and improves wear resistance and contact resistance characteristics. 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)
Ag9〜11重量％、Cu13〜15重量％、Ni0.5〜1.5重
量％のAu―Pt―Ag―Cu―Niが95〜99.5重量％
及び残部がNb、In及びCdの少なくとも一種を合
計で0.5〜５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: Au69-71% by weight, Pt4-6% by weight,
95-99.5 wt% Au-Pt-Ag-Cu-Ni with 9-11 wt% Ag, 13-15 wt% Cu, 0.5-1.5 wt% Ni
and the balance being at least one of Nb, In, and Cd in a total amount of 0.5 to 5% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57208263A JPS59100239A (en) | 1982-11-27 | 1982-11-27 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57208263A JPS59100239A (en) | 1982-11-27 | 1982-11-27 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59100239A JPS59100239A (en) | 1984-06-09 |
| JPH0252689B2 true JPH0252689B2 (en) | 1990-11-14 |
Family
ID=16553338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57208263A Granted JPS59100239A (en) | 1982-11-27 | 1982-11-27 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59100239A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60114541A (en) * | 1983-11-24 | 1985-06-21 | Tanaka Kikinzoku Kogyo Kk | Sliding contact material |
| JPH0618475B2 (en) * | 1986-09-30 | 1994-03-09 | 田中貴金属工業株式会社 | Method of manufacturing sliding contact material |
| JPH0279379A (en) * | 1988-09-14 | 1990-03-19 | Tanaka Kikinzoku Kogyo Kk | Wire material for sliding |
-
1982
- 1982-11-27 JP JP57208263A patent/JPS59100239A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59100239A (en) | 1984-06-09 |