JPH0261534B2 - - Google Patents
Info
- Publication number
- JPH0261534B2 JPH0261534B2 JP57230655A JP23065582A JPH0261534B2 JP H0261534 B2 JPH0261534 B2 JP H0261534B2 JP 57230655 A JP57230655 A JP 57230655A JP 23065582 A JP23065582 A JP 23065582A JP H0261534 B2 JPH0261534 B2 JP H0261534B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- contact
- brush
- sliding contact
- brushes
- 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 19
- 229910052793 cadmium Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 description 7
- 239000000314 lubricant Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 229910052737 gold Inorganic materials 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
- 239000012776 electronic material Substances 0.000 description 1
- 238000005516 engineering process Methods 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
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、
Au19.0〜21.0重量％、Pt4.0〜6.0重量％、Pd44.0
〜46.0重量％、Ag29.0〜31.0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、耐触
性、ばね性等の優れた特性を有し、その点に着目
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
の元素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
Au19.0〜21.0重量％、Pt4.0〜6.0重量％、Pd44.0
〜46.0重量％、Ag29.0〜31.0重量％のAu−Pt−
Pd−Agが93〜99.5重量％及び残部がNb及びCd
の少なくとも一種を合計で0.5〜7.0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Au19.0〜21.0重量％、Pt4.0〜6.0重量％、
Pd44.0〜46.0重量％、Ag29.0〜31.0重量％のAu
−Pt−Pd−Agが93〜99.5重量％及び残部がNb及
びCdの少なくとも一種を合計で0.5〜7.0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及びCdの
うち少なくとも一種を合計で7.0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在とし、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,
Au19.0~21.0wt%, Pt4.0~6.0wt%, Pd44.0
-46.0% by weight, Ag29.0-31.0% by weight 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 30). 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 Au, Pt, Pd, and Ag. It is something. 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 in order to eliminate such drawbacks, and uses the above-mentioned alloy material as a base material and adds a small amount of a specific element to it, and uses the generated oxide as a lubricant to improve wear resistance. It is an object of the present invention to provide a sliding contact material for a brush. The sliding contact material for brushes of the present invention has a composition ratio of
Au19.0~21.0wt%, Pt4.0~6.0wt%, Pd44.0
~46.0 wt%, Ag29.0~31.0 wt% Au−Pt−
Pd-Ag is 93-99.5% by weight and the balance is Nb and Cd
A total of 0.5 to 7.0% by weight of at least one of the above. In the sliding contact material for brushes of the present invention, the composition ratio is 19.0 to 21.0% by weight of Au, 4.0 to 6.0% by weight of Pt,
Pd44.0~46.0wt%, Ag29.0~31.0wt%Au
The reason why Pt-Pd-Ag is 93 to 99.5% by weight and the balance is at least one of Nb and Cd is 0.5 to 7.0% by weight in total is that it is used as a lubricant to improve the wear resistance of the conventional alloy material. If the total amount of at least one of Nb and Cd is less than 0.5% by weight, the amount of oxide generated is too small to be effective as a lubricant. If the total amount exceeds 7.0% by weight, the amount of oxides generated increases, contact resistance increases, and furthermore, it becomes unstable. Also Au,
By setting the contents of Pt, Pd, and Ag within a range that does not change the composition ratio of the conventional alloy material,
The properties of conventional alloy materials will be exhibited without being impaired. 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 wire rods with a wire diameter of 0.7 mm were made using sliding contact materials for conventional brushes and conventional sliding contact materials for brushes, each of which 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 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 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１〜９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１〜９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、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
に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 above table, it can be seen that the brush contacts of Examples 1 to 9 have significantly less wear than the conventional brush contacts, and the contact resistance is equally 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 9, generates oxides such as Nb and Cd during sliding.
This is because this oxide acts as a lubricant and improves wear resistance. In addition, since the oxide is soft,
This is because it is easily removed by the sliding action, so there is no change in contact resistance. 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 contact resistance equivalent to that of a conventional brush contact material.
Claims (1)
量％、Pd44.0〜46.0重量％、Ag29.0〜31.0重量％
のAu−Pt−Pd−Agが93〜99.5重量％及び残部が
Nb及びCdの少なくとも一種を合計で0.5〜7.0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: Au19.0-21.0% by weight, Pt4.0-6.0% by weight, Pd44.0-46.0% by weight, Ag29.0-31.0% by weight
Au-Pt-Pd-Ag is 93-99.5% by weight and the balance is
A sliding contact material for a brush, characterized in that the total content of at least one of Nb and Cd is 0.5 to 7.0% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57230655A JPS59118837A (en) | 1982-12-25 | 1982-12-25 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57230655A JPS59118837A (en) | 1982-12-25 | 1982-12-25 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59118837A JPS59118837A (en) | 1984-07-09 |
| JPH0261534B2 true JPH0261534B2 (en) | 1990-12-20 |
Family
ID=16911201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57230655A Granted JPS59118837A (en) | 1982-12-25 | 1982-12-25 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59118837A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4804517A (en) * | 1986-03-06 | 1989-02-14 | Williams Dental Company, Inc. | Gold colored palladium - indium alloys |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5080493A (en) * | 1973-11-22 | 1975-06-30 |
-
1982
- 1982-12-25 JP JP57230655A patent/JPS59118837A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5080493A (en) * | 1973-11-22 | 1975-06-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59118837A (en) | 1984-07-09 |