JPH0327614B2 - - Google Patents
Info
- Publication number
- JPH0327614B2 JPH0327614B2 JP58102088A JP10208883A JPH0327614B2 JP H0327614 B2 JPH0327614 B2 JP H0327614B2 JP 58102088 A JP58102088 A JP 58102088A JP 10208883 A JP10208883 A JP 10208883A JP H0327614 B2 JPH0327614 B2 JP H0327614B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- brush
- contact
- sliding contact
- materials
- 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
- 229910052733 gallium Inorganic materials 0.000 claims description 6
- 229910052732 germanium Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- OYJSZRRJQJAOFK-UHFFFAOYSA-N palladium ruthenium Chemical compound [Ru].[Pd] OYJSZRRJQJAOFK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 description 19
- 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
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012776 electronic material Substances 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、
Pd87〜93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、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Sb1.0〜5.0重量％、
Si、Bi、Ge及びGa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Pd−Ruが
92.0〜98.5重量％及び残部がSb1.0〜5.0重量％、
Si、Bi、Ge及びGa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硬くする為で、Sbが
1.0重量％未満あるいはSi、Bi、Ge及びGa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5.0重量％を超えるかあ
るいはSi、Bi、Ge及びGa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Sbと
Si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 87-93% by weight of Pd 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%
92.0~98.5% by weight and the balance is Sb1.0~5.0% by weight,
At least one of Si, Bi, Ge and Ga in total 0.5
~3% by weight. In the sliding contact material for brushes of the present invention, Pd-Ru has a composition ratio of 87 to 93% by weight of Pd and 7 to 13% by weight of Ru.
92.0~98.5% by weight and the balance is Sb1.0~5.0% by weight,
At least one of Si, Bi, Ge and Ga in total 0.5
The reason why it is set at ~3% by weight is to make the conventional alloy material harder and improve its wear resistance.
If Sb is less than 1.0% by weight or the total amount of at least one of Si, Bi, Ge and Ga is less than 0.5% by weight, the effect cannot be exhibited, and if Sb is more than 5.0% by weight or at least one of Si, Bi, Ge and Ga If the total amount of one type exceeds 3% by weight, the amount of oxides generated will increase, contact resistance will increase, and furthermore, it will become unstable. Furthermore, 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, a conventional alloy material is used as a base material, and Sb and Sb are added to this.
By adding Si, a sliding contact material for a brush having the composition shown in Example 1 of the table was prepared, 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. 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 curving 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１〜14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１〜14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Si、Bi、Ge、Gaの少なくとも一種によ
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 14 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 14, is hardened by Sb and at least one of Si, Bi, Ge, and Ga, and is resistant to wear. This is because it improves sexuality. 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Sb1.0〜
5.0重量％、Si、Bi、Ge及びGa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
Pd-Ru is 92.0~98.5% by weight and the balance is Sb1.0~
5.0% by weight, and at least one of Si, Bi, Ge, and Ga in a total amount of 0.5 to 3% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58102088A JPS59229438A (en) | 1983-06-08 | 1983-06-08 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58102088A JPS59229438A (en) | 1983-06-08 | 1983-06-08 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59229438A JPS59229438A (en) | 1984-12-22 |
| JPH0327614B2 true JPH0327614B2 (en) | 1991-04-16 |
Family
ID=14318018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58102088A Granted JPS59229438A (en) | 1983-06-08 | 1983-06-08 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59229438A (en) |
-
1983
- 1983-06-08 JP JP58102088A patent/JPS59229438A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59229438A (en) | 1984-12-22 |