JPH0351260B2 - - Google Patents
Info
- Publication number
- JPH0351260B2 JPH0351260B2 JP24622983A JP24622983A JPH0351260B2 JP H0351260 B2 JPH0351260 B2 JP H0351260B2 JP 24622983 A JP24622983 A JP 24622983A JP 24622983 A JP24622983 A JP 24622983A JP H0351260 B2 JPH0351260 B2 JP H0351260B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- brush
- alloy material
- sliding
- sliding contact
- 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
Links
- 239000000956 alloy Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052787 antimony Inorganic materials 0.000 claims description 4
- 229910052785 arsenic Inorganic materials 0.000 claims description 4
- 229910052711 selenium Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 description 3
- 229910052745 lead Inorganic materials 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Contacts (AREA)
Description
本発明は、摺動接点装置に係り、特にそれを構
成するブラシとコンミテータ又はスリツプリング
の材料の改良に関する。
従来の摺動接点装置は、Pd30〜70重量％、
Ag30〜70重量％の合金材料にて構成したブラシ
と、Ag−Cd0.5〜15重量％の合金材料にて構成し
たコンミテータ又はスリツプリングとを組合わせ
て成るものである。
ところで、この摺動接点装置のブラシは、コン
ミテータ又はスリツプリング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。
一方、コンミテータ又はスリツプリングは、
Ag−Cd0.5〜15重量％の合金材料により構成さ
れ、ブラシとの摺動時、粘着性が高く耐摩耗性に
劣るものであつた。
本発明は、斯かる欠点を解消すべくなされたも
のであり、ブラシの耐摩耗性を向上させ、コンミ
テータ又はスリツプリングの耐摩耗性を向上させ
た摺動接点装置を提供せんとするものである。
本発明の摺動接点装置は、組成比でPd30〜70
重量％、Ag30〜70重量％のPd−Agが95〜99.5重
量％及び残部がSb、Te、Mo、Pb、Se、As及び
Znの少なくとも１種を合計で0.5〜５重量％から
成る合金材料にて構成したブラシと、Ag−Cu3
〜12重量％又はAg−Cu3〜12重量％−Cd5重量％
以下の合金材料にて構成したコンミテータ又はス
リツプリングとを組合わせて成るものである。
本発明の摺動接点装置に於いて、ブラシを組成
比でPd30〜70重量％、Ag30〜70重量％のPd−
Agが95〜99.5重量％及び残部がSb、Te、Mo、
Pb、Se、As及びZnの少なくとも１種を合計で
0.5〜５重量％から成る合金材料にて構成した理
由は、前記Pd−Agの合金材料の耐摩耗性を向上
すべく潤滑剤となる酸化物を適量発生させる為
で、0.5重量％未満では酸化物の発生量が少なく
て潤滑剤としての効果を発揮できず、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
高くなり、その上不安定となるものである。また
Pd、Ag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。
コンミテータ又はスリツプリングを、Ag−
Cu3〜12重量％又はAg−Cu3〜12重量％−Cd5重
量％以下の合金材料にて構成した理由は、ブラシ
との摺動時の粘着性を抑えて耐摩耗性を向上させ
る為で、Cuの含有量が３重量％未満ではその効
果が得られず、12重量％を超えると摺動時に発生
する酸化物の量が多くなりすぎて接触抵抗が高く
不安定になり、Cdの含有量が５重量％を超える
とこれが酸化Cdとなつた際、接触抵抗が高くな
り、耐摩耗性が劣下するものである。従つて、
Cuの含有量は３〜12重量％、Cdの含有量は５重
量％を超えないようにしたものである。
次に本発明による摺動接点装置の具体的な実施
例と従来例について説明する。
下記の表−１の左欄に示す成分組成の実施例及
び従来例の合金材料より成る線径0.7mmのブラシ
線材を各々長さ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ブラ
シを作つた。一方下記の表−１の右欄に示す成分
組成の実施例及び従来例の合金材料により成る厚
さ0.5mmの板材を打抜いて直径50mmのスリツプリ
ングを作つた。然してこれらブラシ及びスリツプ
リングを夫々組合わせて摺動接点装置を作り、
夫々ブラシをスリツプリングに接触させ、スリツ
プリングを正逆回転させて下記の試験条件にて摺
動試験を行ない、ブラシ及びスリツプリングの摩
耗量と接触抵抗を測定した処、下記の表−２に示
すような結果を得た。
試験条件
電流：0.6A
電圧：12V
負荷：抵抗負荷
回転数：1000回転／分
周速度：120〜130ｍ／min
接触力：100ｇ
摺動時間：７時間
The present invention relates to a sliding contact device, and particularly to improvements in the materials of the brush, commutator, or slip ring constituting the sliding contact device. Conventional sliding contact device has Pd30~70% by weight,
It is a combination of a brush made of an alloy material containing 30 to 70% Ag by weight and a commutator or slip ring made of an alloy material containing 0.5 to 15% Ag-Cd by weight. By the way, the brush of this sliding contact device has poor abrasion resistance when sliding with a commutator or a slip ring, and tends to generate abrasion powder, causing noise. On the other hand, a commutator or slip ring is
It was composed of an alloy material containing 0.5 to 15% by weight of Ag-Cd, and had high stickiness and poor abrasion resistance when sliding with a brush. The present invention has been made to eliminate such drawbacks, and aims to provide a sliding contact device in which the wear resistance of the brush is improved and the wear resistance of the commutator or slip ring is improved. . The sliding contact device of the present invention has a composition ratio of Pd30 to 70.
Pd-Ag is 95-99.5% by weight and the balance is Sb, Te, Mo, Pb, Se, As and
A brush made of an alloy material containing at least one type of Zn in a total of 0.5 to 5% by weight, and Ag-Cu3
~12 wt% or Ag-Cu3~12 wt%-Cd5 wt%
It is combined with a commutator or slip ring made of the following alloy materials. In the sliding contact device of the present invention, the brush has a composition ratio of 30 to 70% by weight of Pd and 30 to 70% by weight of Ag.
Ag is 95-99.5% by weight and the balance is Sb, Te, Mo,
At least one of Pb, Se, As and Zn in total
The reason why the alloy material is composed of 0.5 to 5% by weight is to generate an appropriate amount of oxide that acts as a lubricant to improve the wear resistance of the Pd-Ag alloy material. If the amount of oxides generated is small, it cannot be effective as a lubricant, and if it exceeds 5% by weight, the amount of oxides generated increases, contact resistance becomes high, and it becomes unstable. Also
By setting the contents of Pd and Ag 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. Commutator or slip spring, Ag-
The reason why it is made of an alloy material containing less than 3 to 12 weight % Cu or 3 to 12 weight % Ag-Cu and 5 weight % Cd is to suppress the stickiness when sliding with the brush and improve wear resistance. If the content of Cd is less than 3% by weight, the effect cannot be obtained, and if it exceeds 12% by weight, the amount of oxide generated during sliding becomes too large, resulting in high contact resistance and instability. If it exceeds 5% by weight, when it becomes oxidized Cd, the contact resistance increases and wear resistance deteriorates. Therefore,
The content of Cu is 3 to 12% by weight, and the content of Cd is not more than 5% by weight. Next, specific embodiments and conventional examples of the sliding contact device according to the present invention will be described. Brush wire rods with a wire diameter of 0.7 mm made of alloy materials of the example and conventional example shown in the left column of Table 1 below were each cut into lengths of 8 mm, and two wire rods were placed in parallel with one end having a width of 10 mm and a length of 8 mm. A brush was made by welding it to a base material with a length of 13 mm and a thickness of 0.2 mm, and a 2R arc-shaped contact part was curved at the other end. On the other hand, slip rings with a diameter of 50 mm were made by punching out 0.5 mm thick plates made of alloy materials having the compositions shown in the right column of Table 1 below. Therefore, a sliding contact device was made by combining these brushes and slip rings, respectively.
A sliding test was conducted under the following test conditions by bringing each brush into contact with the slip ring and rotating the slip ring in forward and reverse directions.The wear amount and contact resistance of the brush and slip ring were measured, and the results are shown in Table 2 below. We obtained the results shown below. Test conditions Current: 0.6A Voltage: 12V Load: Resistance load Rotation speed: 1000 rotations/Division speed: 120-130m/min Contact force: 100g Sliding time: 7 hours
【表】【table】
【表】【table】
【表】【table】
【表】
上記の表−２で明らかなように実施例１〜23の
摺動接点装置のブラシとスリツプリングは、夫々
従来例１、２の摺動接点のブラシとスリツプリン
グに比し摩耗量が著しく少なく、接触抵抗は同等
であることが判る。これはひとえに実施例１〜23
の摺動接点装置のブラシを構成している合金材料
が、摺動時にSb、Te、Mo、Pb、Se、As、Zn等
の酸化物が発生し、この酸化物が潤滑剤となり、
耐摩耗性が向上し、また摺動中に発生する酸化物
の量と摩耗量がバランスしているからに他ならな
い。また実施例１〜23の摺動接点装置のスリツプ
リングを構成している合金材料のCuによつて摺
動時の粘着性が高くなるのが抑えられて耐摩耗性
が向上しているからに他ならない。
以上詳記した通り本発明の摺動接点装置は、従
来の摺動接点装置に比べブラシとコンミテータ又
はスリツプリングの耐摩耗性が著しく優れてい
て、摩耗粉の発生量が極めて少なく、ノイズの発
生が殆んどなく、従来の摺動接点装置にとつて代
わることのできる画期的なものと云える。[Table] As is clear from Table 2 above, the brushes and slip rings of the sliding contact devices of Examples 1 to 23 have a greater amount of wear than the brushes and slip rings of the sliding contacts of Conventional Examples 1 and 2, respectively. It can be seen that the contact resistance is significantly lower and the contact resistance is the same. This is just Examples 1 to 23.
When the alloy material that makes up the brush of the sliding contact device slides, oxides such as Sb, Te, Mo, Pb, Se, As, and Zn are generated, and these oxides act as lubricants.
This is because the wear resistance is improved and the amount of oxides generated during sliding is balanced with the amount of wear. In addition, the Cu alloy material constituting the slip rings of the sliding contact devices of Examples 1 to 23 suppresses the increase in stickiness during sliding and improves wear resistance. None other than that. As detailed above, the sliding contact device of the present invention has significantly superior wear resistance of the brush and commutator or slip ring compared to conventional sliding contact devices, generates extremely little wear powder, and generates no noise. It can be said to be an epoch-making device that can replace conventional sliding contact devices.
Claims (1)
のPd−Agが95〜99.5重量％及び残部がSb、Te、
Mo、Pb、Se、As及びZnの少なくとも１種を合
計で0.5〜５重量％から成る合金材料にて構成し
たブラシと、Ag−Cu3〜12重量％又はAg−Cu3
〜12重量％−Cd5重量％以下の合金材料にて構成
したコンミテータ又はスリツプリングとを組合わ
せて成る摺動接点装置。1 Composition ratio: Pd 30-70% by weight, Ag 30-70% by weight
95 to 99.5% by weight of Pd-Ag and the balance is Sb, Te,
A brush made of an alloy material containing at least one of Mo, Pb, Se, As, and Zn in a total of 0.5 to 5% by weight, and Ag-Cu3 to 12% by weight or Ag-Cu3.
A sliding contact device combined with a commutator or slip ring made of an alloy material containing up to 12% by weight and less than 5% by weight of Cd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24622983A JPS60138874A (en) | 1983-12-27 | 1983-12-27 | sliding contact device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24622983A JPS60138874A (en) | 1983-12-27 | 1983-12-27 | sliding contact device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60138874A JPS60138874A (en) | 1985-07-23 |
| JPH0351260B2 true JPH0351260B2 (en) | 1991-08-06 |
Family
ID=17145430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24622983A Granted JPS60138874A (en) | 1983-12-27 | 1983-12-27 | sliding contact device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60138874A (en) |
-
1983
- 1983-12-27 JP JP24622983A patent/JPS60138874A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60138874A (en) | 1985-07-23 |