JPH0222135B2 - - Google Patents
Info
- Publication number
- JPH0222135B2 JPH0222135B2 JP58023919A JP2391983A JPH0222135B2 JP H0222135 B2 JPH0222135 B2 JP H0222135B2 JP 58023919 A JP58023919 A JP 58023919A JP 2391983 A JP2391983 A JP 2391983A JP H0222135 B2 JPH0222135 B2 JP H0222135B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- sliding contact
- brush
- contact
- contact material
- 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 7
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 229910052802 copper 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
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- -1 and in particular Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000126 substance 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、Au〜９〜11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Mnを１〜５重量％と、Bi、Ge及びSi
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Mnを１〜
５重量％と、Bi、Ge及びSi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MnとBi、Ge、
Siの少なくとも一種を添加して硬くする為で、
Mnが１重量％あるいはBi、Ge、Si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、Mnが５重量％あるいはBi、Ge、Si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, Au~9~11% by weight, Pt9
~11 wt%, Pd34~36 wt%, Ag29~31 wt%, Cu13~15 wt% and Zn0.5~1.5 wt%, Mn 1~5 wt%, Bi, Ge and Si
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
36% by weight of Mn, 29-31% by weight of Ag, 13-15% by weight of Cu, and 0.5-1.5% by weight of Zn.
The reason why at least one of Bi, Ge, and Si is added in a total of 0.5 to 3% by weight is that Mn, Bi, Ge,
This is to make it hard by adding at least one type of Si.
If Mn is less than 1% by weight or at least one of Bi, Ge, or Si is less than 0.5% by weight, the effect cannot be sufficiently obtained, and if Mn is more than 5% by weight or at least one of Bi, Ge, or Si is more than 3% by weight, oxidation occurs. The amount of substances generated increases, the contact resistance increases, and furthermore, it becomes 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.
A brush contact is made by cutting two pieces into 2mm pieces, placing them in parallel, welding one end to a base material with a width of 10mm, a length of 13mm, and a thickness of 0.2mm, and bending a 2R arc-shaped contact part on the other end. Ivy. Then, each brush contact is brought into contact with a disc-shaped commutator,
A sliding test was conducted under the following test conditions by rotating the commutator in forward and reverse directions, and the wear amount and contact resistance were measured.
The results shown in the right column of the table below 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１〜20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１〜20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、Mn
とBi、Ge、Siの少なくとも一種の添加により硬
くなり、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, the brush contacts of Examples 1 to 20 had significantly less wear than the conventional brush contacts, and it was found that the contact resistance was low and stable.
This is simply due to the fact that the sliding contact material of the present invention constituting the brush wire of the brush contacts of Examples 1 to 20 has Mn
This is because the addition of at least one of Bi, Ge, and Si increases hardness 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Mnを１〜５重量％と、Bi、Ge及びSi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,
It is characterized by adding 1 to 5% by weight of Mn and a total of 0.5 to 3% by weight of at least one of Bi, Ge, and Si to a base alloy consisting of 13 to 15% by weight of Cu and 0.5 to 1.5% by weight of Zn. Sliding contact material for brushes of small DC motors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58023919A JPS59150054A (en) | 1983-02-16 | 1983-02-16 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58023919A JPS59150054A (en) | 1983-02-16 | 1983-02-16 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59150054A JPS59150054A (en) | 1984-08-28 |
| JPH0222135B2 true JPH0222135B2 (en) | 1990-05-17 |
Family
ID=12123910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58023919A Granted JPS59150054A (en) | 1983-02-16 | 1983-02-16 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59150054A (en) |
-
1983
- 1983-02-16 JP JP58023919A patent/JPS59150054A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59150054A (en) | 1984-08-28 |