JPH0360895B2 - - Google Patents
Info
- Publication number
- JPH0360895B2 JPH0360895B2 JP58102096A JP10209683A JPH0360895B2 JP H0360895 B2 JPH0360895 B2 JP H0360895B2 JP 58102096 A JP58102096 A JP 58102096A JP 10209683 A JP10209683 A JP 10209683A JP H0360895 B2 JPH0360895 B2 JP H0360895B2
- 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 20
- 239000000203 mixture Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910052733 gallium 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
- 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
- 229910052725 zinc 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
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 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、
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、各元素の複合添加による相乗
効果と相俟つて、特に耐蝕性、ばね性、機械的強
度、加工性の点に着目されて、Pt、Pd、Ag、Cu
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
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
92〜98.5重量％及び残部がZn1.0〜5.0重量％、Si、
Zr、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92〜98.5重量％及び残部がZn1.0〜5.0重量％、
Si、Zr、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、
Znが1.0重量％未満あるいはSi、Zr、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、Znが5.0重量％を超
えるかあるいはSi、Zr、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、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Zn及
び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 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 been developed by combining Pt, Pd, Ag, and Cu, with particular attention paid to its corrosion resistance, spring properties, mechanical strength, and workability, as well as the synergistic effects of the combined addition of each element.
The elements and content 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
Pt-Pd-Ag-Cu with Pt0.1~1wt%, Pd42~44wt%, Ag39~41wt%, Cu15.5~17.5wt%
92-98.5% by weight and the balance is Zn1.0-5.0% by weight, Si,
At least one of Zr, Bi, Ge and Ga in total 0.5
~3% by weight. 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
is 92 to 98.5% by weight and the balance is Zn 1.0 to 5.0% by weight,
The reason why at least one of Si, Zr, Bi, Ge, and Ga is contained in a total amount of 0.5 to 3% by weight is to make the conventional alloy material hard in order to improve its wear resistance.
Zn is less than 1.0% by weight or Si, Zr, Bi, Ge and
If at least one of Ga is less than 0.5% by weight in total, the effect cannot be exhibited, and if Zn is more than 5.0% by weight or at least one of Si, Zr, Bi, Ge and Ga is more than 3% by weight in total. This results in an increased amount of oxides, increased contact resistance, and instability. 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 is used as a base material, and Zn and Si are added thereto to produce a sliding contact material for a brush having the composition shown in Example 1 of the table, and the present invention having the composition shown in the table in the same manner The wire diameter is 0.7mm using the sliding contact material for brushes and the conventional sliding contact material for brushes.
Brush wire rods were made, each cut into 8 mm lengths, two wires were placed in parallel, one end was welded to a base material with a width of 10 mm, a length of 13 mm, and a thickness of 0.2 mm, and a 2R arc-shaped contact was made at the other end. I made a brush contact by bending the part. 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 revolutions/min Circumferential speed: 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１〜16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１〜16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、ZnとSi、Zr、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 16 had significantly less wear than the conventional brush contacts, and it was found that the contact resistance was low and stable.
This is simply because the brush sliding contact material of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 16, is hardened by Zn and at least one of Si, Zr, Bi, Ge, and Ga. 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)
％、Ag39〜41重量％、Cu15.5〜17.5重量％のPt
−Pd−Ag−Cuが92〜98.5重量％及び残部が
Zn1.0〜5.0重量％、Si、Zr、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 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 92 to 98.5% by weight and the balance is
A sliding contact material for a brush comprising 1.0 to 5.0% by weight of Zn and a total of 0.5 to 3% by weight of at least one of Si, Zr, Bi, Ge, and Ga.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58102096A JPS59229446A (en) | 1983-06-08 | 1983-06-08 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58102096A JPS59229446A (en) | 1983-06-08 | 1983-06-08 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59229446A JPS59229446A (en) | 1984-12-22 |
| JPH0360895B2 true JPH0360895B2 (en) | 1991-09-18 |
Family
ID=14318243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58102096A Granted JPS59229446A (en) | 1983-06-08 | 1983-06-08 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59229446A (en) |
-
1983
- 1983-06-08 JP JP58102096A patent/JPS59229446A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59229446A (en) | 1984-12-22 |