JPH0222138B2 - - Google Patents
Info
- Publication number
- JPH0222138B2 JPH0222138B2 JP58023923A JP2392383A JPH0222138B2 JP H0222138 B2 JPH0222138 B2 JP H0222138B2 JP 58023923 A JP58023923 A JP 58023923A JP 2392383 A JP2392383 A JP 2392383A JP H0222138 B2 JPH0222138 B2 JP H0222138B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- sliding contact
- brush
- 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 19
- 239000000956 alloy Substances 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- -1 and in particular Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 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)
Description
本発明は、直流小型モータの刷子用摺動接点材
料（以下「摺動接点材料」という。）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、とりわけ刷子接点用の材料としては、Au9〜
11重量％、Pt9〜11重量％、Pd34〜36重量％、
Ag29〜31重量％、Cu13〜15重量％、Zn0.5〜1.5
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、耐摩耗性を向上させた
摺動接点材料を提供せんとするものである。
本発明の摺動接点材料は、Au、Pt、Pd、Ag、
Cu及びZnより成る基合金に他の元素を添加した
摺動接点材料において、Au9〜11重量％、Pt9〜
11重量％、Pd34〜36重量％、Ag29〜31重量％、
Cu13〜15重量％及びZn0.5〜1.5重量％より成る基
合金にInを１〜５重量％と、Te、Ti、Li及びMg
の少なくとも一種を合計で0.5〜３重量％添加し
て成るものである。
本発明のAu、Pt、Pd、Ag、Cu及びZnより成
る基合金に他の元素を添加した摺動接点材料にお
いて、Au9〜11重量％、Pt9〜11重量％、Pd34〜
36重量％、Ag29〜31重量％、Cu13〜15重量％及
びZn0.5〜1.5重量％より成る基合金にInを１〜５
重量％と、Te、Ti、Li及びMgの少なくとも一
種を合計で0.5〜３重量％添加している理由は、
前記合金材料の耐摩耗性を向上すべくInとTe、
Ti、Li、Mgとの金属間化合物を分散して硬くす
る為で、Inが１重量％あるいはTe、Ti、Li、Mg
の少なくとも一種が0.5重量％未満ではその効果
が十分得られず、Inが５重量％あるいはTe、Ti、
Li、Mgの少なくとも一種が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。
次に下記の左欄に示す成分組成の本発明による
摺動接点材料と従来の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８
mm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 an improvement in a sliding contact material for a brush of a small DC motor (hereinafter referred to as "sliding contact material"). Conventionally, various materials have been used as sliding contact materials, and in particular, materials for brush contacts include Au9~
11% by weight, Pt9~11% by weight, Pd34~36% by weight,
Ag29~31wt%, Cu13~15wt%, Zn0.5~1.5
Alloy materials consisting of % by weight 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 in order to eliminate such drawbacks, and aims to provide a sliding contact material with improved wear resistance by using the above-mentioned alloy material as a base material and adding a small amount of a specific element to it. It is something to do. The sliding contact material of the present invention includes Au, Pt, Pd, Ag,
In sliding contact materials made by adding other elements to the base alloy consisting of Cu and Zn, Au9~11% by weight, Pt9~
11% by weight, Pd34~36% by weight, Ag29~31% by weight,
In a base alloy consisting of 13-15% by weight of Cu and 0.5-1.5% by weight of Zn, 1-5% by weight of In, Te, Ti, Li and Mg.
At least one of the following is added in a total amount of 0.5 to 3% by weight. In the sliding contact material of the present invention in which other elements are added to the base alloy consisting of Au, Pt, Pd, Ag, Cu and Zn, Au9 to 11% by weight, Pt9 to 11% by weight, Pd34 to
1 to 5% of In to a base alloy consisting of 36% by weight, 29 to 31% by weight of Ag, 13 to 15% by weight of Cu, and 0.5 to 1.5% by weight of Zn.
The reason why at least one of Te, Ti, Li, and Mg is added in a total of 0.5 to 3% by weight is as follows.
To improve the wear resistance of the alloy material, In and Te,
This is to disperse and harden intermetallic compounds with Ti, Li, and Mg, and In is 1% by weight or Te, Ti, Li, and Mg.
If at least one of them is less than 0.5% by weight, the effect cannot be obtained sufficiently, and if In is less than 0.5% by weight, Te, Ti,
If at least one of Li and Mg exceeds 3% by weight, the amount of oxides generated will increase, contact resistance will increase, and furthermore, it will become unstable. Next, brush wire rods each having a wire diameter of 0.7 mm were made using the sliding contact material according to the present invention and the conventional sliding contact material having the component compositions shown in the left column below.
Cut into mm pieces, put two in parallel, and one end has a width of 10 mm and a length of
A brush contact was made by welding to a base material of 13 mm and 0.2 mm thickness, and curving a 2R arc-shaped contact part on 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１〜21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１〜21の刷子接点の刷子線
材を構成している本発明の摺動接点材料が、Inと
Te、Ti、Li、Mgとの金属間化合物の分散によ
つて硬化して耐摩耗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摺動接点材料に
よれば、従来の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 21 had significantly less wear than the conventional brush contacts, and that the contact resistance was low and stable.
This is simply due to the fact that the sliding contact material of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 21, is
This is because the dispersion of intermetallic compounds with Te, Ti, Li, and Mg hardens and improves wear resistance. As detailed above, the sliding contact material according to the present invention has significantly better wear resistance than conventional sliding contact materials, generates extremely little wear powder, generates almost no noise, and This has the advantage that it is possible to obtain a brush contact having a lower and more stable contact resistance than with conventional sliding contact materials.
Claims (1)
金に他の元素を添加した直流小型モータの刷子用
摺動接点材料において、Au9〜11重量％、Pt9〜
11重量％、Pd34〜36重量％、Ag29〜31重量％、
Cu13〜15重量％及びZn0.5〜1.5重量％より成る基
合金にInを１〜５重量％と、Te、Ti、Li及びMg
の少なくとも一種を合計で0.5〜３重量％添加し
て成ることを特徴とする直流小型モータの刷子用
摺動接点材料。1 In the sliding contact material for the brush of a small DC motor, which is made by adding other elements to the base alloy consisting of Au, Pt, Pd, Ag, Cu and Zn, Au9 to 11% by weight, Pt9 to
11% by weight, Pd34~36% by weight, Ag29~31% by weight,
In a base alloy consisting of 13-15% by weight of Cu and 0.5-1.5% by weight of Zn, 1-5% by weight of In, Te, Ti, Li and Mg.
1. A sliding contact material for a brush of a small DC motor, characterized in that a total of 0.5 to 3% by weight of at least one of these is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58023923A JPS59150057A (en) | 1983-02-16 | 1983-02-16 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58023923A JPS59150057A (en) | 1983-02-16 | 1983-02-16 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59150057A JPS59150057A (en) | 1984-08-28 |
| JPH0222138B2 true JPH0222138B2 (en) | 1990-05-17 |
Family
ID=12124033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58023923A Granted JPS59150057A (en) | 1983-02-16 | 1983-02-16 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59150057A (en) |
-
1983
- 1983-02-16 JP JP58023923A patent/JPS59150057A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59150057A (en) | 1984-08-28 |