JPH0259219B2 - - Google Patents
Info
- Publication number
- JPH0259219B2 JPH0259219B2 JP57220959A JP22095982A JPH0259219B2 JP H0259219 B2 JPH0259219 B2 JP H0259219B2 JP 57220959 A JP57220959 A JP 57220959A JP 22095982 A JP22095982 A JP 22095982A JP H0259219 B2 JPH0259219 B2 JP H0259219B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- brush
- sliding contact
- 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
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 229910052720 vanadium Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 229910017944 Ag—Cu Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052802 copper Inorganic materials 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
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 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、硬
さ、耐蝕性、ばね性等の優れた、Au61.5〜63.5重
量％、Ag28〜30重量％、Cu7.5〜9.5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、軟化温度が低く整流子との摺動時に凝着して
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
の材料を僅かに添加させて、軟化温度を高くし、
耐凝着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
Au61.5〜63.5重量％、Ag28〜30重量％、Cu7.5〜
9.5重量％のAu−Ag−Cuが95〜99.5重量％及び
残部がＷ、Ｖ及びTaの少なくとも一種を合計で
0.5〜５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Au61.5〜63.5重量％、Ag28〜30重量％、Cu7.5
〜9.5重量％のAu−Ag−Cuが95〜99.5重量％及
び残部がＷ、Ｖ及びTaの少なくとも一種を合計
で0.5〜５重量％としている理由は、前記従来の
合金材料の耐凝着性を向上すべく軟化温度を高め
る為で、Ｗ、Ｖ及びTa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、
Ｗ、Ｖ及びTaのうち少なくとも一種を合計で５
重量％を超えると酸化物の発生量が多くなり、接
触抵抗が高く不安定となり、その上ばね性が劣化
するものである。またAu，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Ｗ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, Au61.5-63.5% by weight and Ag28-30% by weight are excellent in hardness, corrosion resistance, spring properties, etc. , alloy materials consisting of 7.5-9.5% by weight of Cu were widely used. However, brush contacts made of this alloy material have a low softening temperature and tend to adhere to abrasion powder when sliding with a commutator, causing noise. The present invention was made in order to eliminate such drawbacks, and uses the above-mentioned alloy material as a base material and slightly adds a specific material to it to increase the softening temperature.
It is an object of the present invention to provide a sliding contact material for brushes with improved adhesion resistance. The sliding contact material for brushes of the present invention has a composition ratio of
Au61.5~63.5wt%, Ag28~30wt%, Cu7.5~
9.5% by weight of Au-Ag-Cu, 95 to 99.5% by weight, and the balance is a total of at least one of W, V, and Ta.
It consists of 0.5 to 5% by weight. In the sliding contact material for brushes of the present invention, the composition ratio is 61.5 to 63.5% by weight of Au, 28 to 30% by weight of Ag, and 7.5% by weight of Cu.
The reason why 95 to 99.5 weight % of Au-Ag-Cu is 9.5 weight % and the balance is 0.5 to 5 weight % of at least one of W, V, and Ta in total is because of the adhesion resistance of the conventional alloy materials. This is to increase the softening temperature in order to improve the softening temperature, and if the total amount of at least one of W, V, and Ta is less than 0.5% by weight, the effect cannot be exhibited.
A total of 5 of at least one of W, V and Ta
If it exceeds % by weight, the amount of oxides generated will increase, the contact resistance will be high and unstable, and the spring properties will deteriorate. In addition, the content of Au, Ag, and Cu is
By keeping the composition ratio of the conventional alloy material within a range where no change is made, 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 W is added thereto to obtain a brush sliding contact material having the composition shown in Example 1 in the table. Brush wires with a wire diameter of 0.7 mm were made using the sliding contact material and the conventional sliding contact material for brushes, each 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 13 mm. A brush contact was made by welding to a 0.2 mm thick base material and bending 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 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１〜15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１〜15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、Ｗ、Ｖ、Ta等により軟化温度が高く、
耐凝着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 15 have significantly less wear than the conventional brush contacts, and the contact resistance is equally 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 15, has a high softening temperature due to W, V, Ta, etc.
This is because it improves adhesion 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％、Cu7.5〜9.5重量％のAu−Ag−Cuが95〜
99.5重量％及び残部がＷ、Ｖ及びTaの少なくと
も一種を合計で0.5〜５重量％であることを特徴
とする刷子用摺動接点材料。1 Au-Ag-Cu with a composition ratio of 61.5 to 63.5% by weight, 28 to 30% by weight of Ag, and 7.5 to 9.5% by weight of Cu is 95 to 95% by weight.
A sliding contact material for a brush, comprising 99.5% by weight and the balance being at least one of W, V and Ta in a total of 0.5 to 5% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57220959A JPS59110750A (en) | 1982-12-16 | 1982-12-16 | Slide contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57220959A JPS59110750A (en) | 1982-12-16 | 1982-12-16 | Slide contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59110750A JPS59110750A (en) | 1984-06-26 |
| JPH0259219B2 true JPH0259219B2 (en) | 1990-12-11 |
Family
ID=16759232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57220959A Granted JPS59110750A (en) | 1982-12-16 | 1982-12-16 | Slide contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59110750A (en) |
-
1982
- 1982-12-16 JP JP57220959A patent/JPS59110750A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59110750A (en) | 1984-06-26 |